Translation update

Use comma-ok idiom to signal files missing in database (fixes #1186)

.gitignore

@@ -13,3 +13,5 @@ perfstats*.csv
 coverage.xml
 !gui/scripts/syncthing
 .DS_Store
+syncthing.md5
+syncthing.exe.md5

AUTHORS

@@ -8,7 +8,9 @@ Arthur Axel fREW Schmidt <frew@afoolishmanifesto.com> <frioux@gmail.com>
 Ben Schulz <ueomkail@gmail.com> <uok@users.noreply.github.com>
 Ben Sidhom <bsidhom@gmail.com>
 Brandon Philips <brandon@ifup.org>
+Brendan Long <self@brendanlong.com>
 Caleb Callaway <enlightened.despot@gmail.com>
+Cathryne Linenweaver <cathryne.linenweaver@gmail.com> <Cathryne@users.noreply.github.com>
 Chris Joel <chris@scriptolo.gy>
 Daniel Martí <mvdan@mvdan.cc>
 Dennis Wilson <dw@risu.io>
@@ -24,6 +26,7 @@ Jochen Voss <voss@seehuhn.de>
 Lode Hoste <zillode@zillode.be>
 Marcin Dziadus <dziadus.marcin@gmail.com>
 Michael Tilli <pyfisch@gmail.com>
+Peter Hoeg <peter@speartail.com>
 Philippe Schommers <philippe@schommers.be>
 Phill Luby <phill.luby@newredo.com>
 Piotr Bejda <piotrb10@gmail.com>

CONTRIBUTING.md

@@ -46,6 +46,20 @@ All nontrivial contributions should go through the pull request
 mechanism for internal review. Determining what is "nontrivial" is left
 at the discretion of the contributor.
 
+### Authorship
+
+All code authors are listed in the AUTHORS file. Commits must be made
+with the same name and email as listed in the AUTHORS file. To
+accomplish this, ensure that your git configuration is set correctly
+prior to making your first commit;
+
+    $ git config --global user.name "Jane Doe"
+    $ git config --global user.email janedoe@example.com
+
+You must be reachable on the given email address. If you do not wish to
+use your real name for whatever reason, using a nickname or pseudonym is
+perfectly acceptable.
+
 ### Core Team
 
 The Syncthing core team currently consists of the following members;

Godeps/Godeps.json

@@ -1,6 +1,6 @@
 {
 	"ImportPath": "github.com/syncthing/syncthing",
-	"GoVersion": "go1.4rc1",
+	"GoVersion": "go1.4",
 	"Packages": [
 		"./cmd/..."
 	],
@@ -31,7 +31,7 @@
 		},
 		{
 			"ImportPath": "github.com/syndtr/goleveldb/leveldb",
-			"Rev": "97e257099d2ab9578151ba85e2641e2cd14d3ca8"
+			"Rev": "63c9e642efad852f49e20a6f90194cae112fd2ac"
 		},
 		{
 			"ImportPath": "github.com/syndtr/gosnappy/snappy",
@@ -51,23 +51,19 @@
 		},
 		{
 			"ImportPath": "golang.org/x/crypto/bcrypt",
-			"Comment": "null-236",
-			"Rev": "69e2a90ed92d03812364aeb947b7068dc42e561e"
+			"Rev": "731db29863ea7213d9556d0170afb38987f401d4"
 		},
 		{
 			"ImportPath": "golang.org/x/crypto/blowfish",
-			"Comment": "null-236",
-			"Rev": "69e2a90ed92d03812364aeb947b7068dc42e561e"
+			"Rev": "731db29863ea7213d9556d0170afb38987f401d4"
 		},
 		{
 			"ImportPath": "golang.org/x/text/transform",
-			"Comment": "null-112",
-			"Rev": "2f707e0ad64637ca1318279be7201f5ed19c4050"
+			"Rev": "985ee5acfaf1ff6712c7c99438752f8e09416ccb"
 		},
 		{
 			"ImportPath": "golang.org/x/text/unicode/norm",
-			"Comment": "null-112",
-			"Rev": "2f707e0ad64637ca1318279be7201f5ed19c4050"
+			"Rev": "985ee5acfaf1ff6712c7c99438752f8e09416ccb"
 		}
 	]
 }

Godeps/_workspace/src/github.com/syndtr/goleveldb/leveldb/cache/cache.go

@@ -8,152 +8,669 @@
 package cache
 
 import (
+	"sync"
 	"sync/atomic"
+	"unsafe"
+
+	"github.com/syndtr/goleveldb/leveldb/util"
 )
 
-// SetFunc is the function that will be called by Namespace.Get to create
-// a cache object, if charge is less than one than the cache object will
-// not be registered to cache tree, if value is nil then the cache object
-// will not be created.
-type SetFunc func() (charge int, value interface{})
-
-// DelFin is the function that will be called as the result of a delete operation.
-// Exist == true is indication that the object is exist, and pending == true is
-// indication of deletion already happen but haven't done yet (wait for all handles
-// to be released). And exist == false means the object doesn't exist.
-type DelFin func(exist, pending bool)
-
-// PurgeFin is the function that will be called as the result of a purge operation.
-type PurgeFin func(ns, key uint64)
-
-// Cache is a cache tree. A cache instance must be goroutine-safe.
-type Cache interface {
-	// SetCapacity sets cache tree capacity.
-	SetCapacity(capacity int)
-
-	// Capacity returns cache tree capacity.
+// Cacher provides interface to implements a caching functionality.
+// An implementation must be goroutine-safe.
+type Cacher interface {
+	// Capacity returns cache capacity.
 	Capacity() int
 
-	// Used returns used cache tree capacity.
-	Used() int
+	// SetCapacity sets cache capacity.
+	SetCapacity(capacity int)
 
-	// Size returns entire alive cache objects size.
-	Size() int
+	// Promote promotes the 'cache node'.
+	Promote(n *Node)
 
-	// NumObjects returns number of alive objects.
-	NumObjects() int
+	// Ban evicts the 'cache node' and prevent subsequent 'promote'.
+	Ban(n *Node)
 
-	// GetNamespace gets cache namespace with the given id.
-	// GetNamespace is never return nil.
-	GetNamespace(id uint64) Namespace
+	// Evict evicts the 'cache node'.
+	Evict(n *Node)
 
-	// PurgeNamespace purges cache namespace with the given id from this cache tree.
-	// Also read Namespace.Purge.
-	PurgeNamespace(id uint64, fin PurgeFin)
+	// EvictNS evicts 'cache node' with the given namespace.
+	EvictNS(ns uint64)
 
-	// ZapNamespace detaches cache namespace with the given id from this cache tree.
-	// Also read Namespace.Zap.
-	ZapNamespace(id uint64)
+	// EvictAll evicts all 'cache node'.
+	EvictAll()
 
-	// Purge purges all cache namespace from this cache tree.
-	// This is behave the same as calling Namespace.Purge method on all cache namespace.
-	Purge(fin PurgeFin)
-
-	// Zap detaches all cache namespace from this cache tree.
-	// This is behave the same as calling Namespace.Zap method on all cache namespace.
-	Zap()
+	// Close closes the 'cache tree'
+	Close() error
 }
 
-// Namespace is a cache namespace. A namespace instance must be goroutine-safe.
-type Namespace interface {
-	// Get gets cache object with the given key.
-	// If cache object is not found and setf is not nil, Get will atomically creates
-	// the cache object by calling setf. Otherwise Get will returns nil.
-	//
-	// The returned cache handle should be released after use by calling Release
-	// method.
-	Get(key uint64, setf SetFunc) Handle
+// Value is a 'cacheable object'. It may implements util.Releaser, if
+// so the the Release method will be called once object is released.
+type Value interface{}
 
-	// Delete removes cache object with the given key from cache tree.
-	// A deleted cache object will be released as soon as all of its handles have
-	// been released.
-	// Delete only happen once, subsequent delete will consider cache object doesn't
-	// exist, even if the cache object ins't released yet.
-	//
-	// If not nil, fin will be called if the cache object doesn't exist or when
-	// finally be released.
-	//
-	// Delete returns true if such cache object exist and never been deleted.
-	Delete(key uint64, fin DelFin) bool
-
-	// Purge removes all cache objects within this namespace from cache tree.
-	// This is the same as doing delete on all cache objects.
-	//
-	// If not nil, fin will be called on all cache objects when its finally be
-	// released.
-	Purge(fin PurgeFin)
-
-	// Zap detaches namespace from cache tree and release all its cache objects.
-	// A zapped namespace can never be filled again.
-	// Calling Get on zapped namespace will always return nil.
-	Zap()
+type CacheGetter struct {
+	Cache *Cache
+	NS    uint64
 }
 
-// Handle is a cache handle.
-type Handle interface {
-	// Release releases this cache handle. This method can be safely called mutiple
-	// times.
-	Release()
-
-	// Value returns value of this cache handle.
-	// Value will returns nil after this cache handle have be released.
-	Value() interface{}
+func (g *CacheGetter) Get(key uint64, setFunc func() (size int, value Value)) *Handle {
+	return g.Cache.Get(g.NS, key, setFunc)
 }
 
+// The hash tables implementation is based on:
+// "Dynamic-Sized Nonblocking Hash Tables", by Yujie Liu, Kunlong Zhang, and Michael Spear. ACM Symposium on Principles of Distributed Computing, Jul 2014.
+
 const (
-	DelNotExist = iota
-	DelExist
-	DelPendig
+	mInitialSize           = 1 << 4
+	mOverflowThreshold     = 1 << 5
+	mOverflowGrowThreshold = 1 << 7
 )
 
-// Namespace state.
-type nsState int
-
-const (
-	nsEffective nsState = iota
-	nsZapped
-)
-
-// Node state.
-type nodeState int
-
-const (
-	nodeZero nodeState = iota
-	nodeEffective
-	nodeEvicted
-	nodeDeleted
-)
-
-// Fake handle.
-type fakeHandle struct {
-	value interface{}
-	fin   func()
-	once  uint32
+type mBucket struct {
+	mu     sync.Mutex
+	node   []*Node
+	frozen bool
 }
 
-func (h *fakeHandle) Value() interface{} {
-	if atomic.LoadUint32(&h.once) == 0 {
-		return h.value
+func (b *mBucket) freeze() []*Node {
+	b.mu.Lock()
+	defer b.mu.Unlock()
+	if !b.frozen {
+		b.frozen = true
+	}
+	return b.node
+}
+
+func (b *mBucket) get(r *Cache, h *mNode, hash uint32, ns, key uint64, noset bool) (done, added bool, n *Node) {
+	b.mu.Lock()
+
+	if b.frozen {
+		b.mu.Unlock()
+		return
+	}
+
+	// Scan the node.
+	for _, n := range b.node {
+		if n.hash == hash && n.ns == ns && n.key == key {
+			atomic.AddInt32(&n.ref, 1)
+			b.mu.Unlock()
+			return true, false, n
+		}
+	}
+
+	// Get only.
+	if noset {
+		b.mu.Unlock()
+		return true, false, nil
+	}
+
+	// Create node.
+	n = &Node{
+		r:    r,
+		hash: hash,
+		ns:   ns,
+		key:  key,
+		ref:  1,
+	}
+	// Add node to bucket.
+	b.node = append(b.node, n)
+	bLen := len(b.node)
+	b.mu.Unlock()
+
+	// Update counter.
+	grow := atomic.AddInt32(&r.nodes, 1) >= h.growThreshold
+	if bLen > mOverflowThreshold {
+		grow = grow || atomic.AddInt32(&h.overflow, 1) >= mOverflowGrowThreshold
+	}
+
+	// Grow.
+	if grow && atomic.CompareAndSwapInt32(&h.resizeInProgess, 0, 1) {
+		nhLen := len(h.buckets) << 1
+		nh := &mNode{
+			buckets:         make([]unsafe.Pointer, nhLen),
+			mask:            uint32(nhLen) - 1,
+			pred:            unsafe.Pointer(h),
+			growThreshold:   int32(nhLen * mOverflowThreshold),
+			shrinkThreshold: int32(nhLen >> 1),
+		}
+		ok := atomic.CompareAndSwapPointer(&r.mHead, unsafe.Pointer(h), unsafe.Pointer(nh))
+		if !ok {
+			panic("BUG: failed swapping head")
+		}
+		go nh.initBuckets()
+	}
+
+	return true, true, n
+}
+
+func (b *mBucket) delete(r *Cache, h *mNode, hash uint32, ns, key uint64) (done, deleted bool) {
+	b.mu.Lock()
+
+	if b.frozen {
+		b.mu.Unlock()
+		return
+	}
+
+	// Scan the node.
+	var (
+		n    *Node
+		bLen int
+	)
+	for i := range b.node {
+		n = b.node[i]
+		if n.ns == ns && n.key == key {
+			if atomic.LoadInt32(&n.ref) == 0 {
+				deleted = true
+
+				// Call releaser.
+				if n.value != nil {
+					if r, ok := n.value.(util.Releaser); ok {
+						r.Release()
+					}
+					n.value = nil
+				}
+
+				// Remove node from bucket.
+				b.node = append(b.node[:i], b.node[i+1:]...)
+				bLen = len(b.node)
+			}
+			break
+		}
+	}
+	b.mu.Unlock()
+
+	if deleted {
+		// Call OnDel.
+		for _, f := range n.onDel {
+			f()
+		}
+
+		// Update counter.
+		atomic.AddInt32(&r.size, int32(n.size)*-1)
+		shrink := atomic.AddInt32(&r.nodes, -1) < h.shrinkThreshold
+		if bLen >= mOverflowThreshold {
+			atomic.AddInt32(&h.overflow, -1)
+		}
+
+		// Shrink.
+		if shrink && len(h.buckets) > mInitialSize && atomic.CompareAndSwapInt32(&h.resizeInProgess, 0, 1) {
+			nhLen := len(h.buckets) >> 1
+			nh := &mNode{
+				buckets:         make([]unsafe.Pointer, nhLen),
+				mask:            uint32(nhLen) - 1,
+				pred:            unsafe.Pointer(h),
+				growThreshold:   int32(nhLen * mOverflowThreshold),
+				shrinkThreshold: int32(nhLen >> 1),
+			}
+			ok := atomic.CompareAndSwapPointer(&r.mHead, unsafe.Pointer(h), unsafe.Pointer(nh))
+			if !ok {
+				panic("BUG: failed swapping head")
+			}
+			go nh.initBuckets()
+		}
+	}
+
+	return true, deleted
+}
+
+type mNode struct {
+	buckets         []unsafe.Pointer // []*mBucket
+	mask            uint32
+	pred            unsafe.Pointer // *mNode
+	resizeInProgess int32
+
+	overflow        int32
+	growThreshold   int32
+	shrinkThreshold int32
+}
+
+func (n *mNode) initBucket(i uint32) *mBucket {
+	if b := (*mBucket)(atomic.LoadPointer(&n.buckets[i])); b != nil {
+		return b
+	}
+
+	p := (*mNode)(atomic.LoadPointer(&n.pred))
+	if p != nil {
+		var node []*Node
+		if n.mask > p.mask {
+			// Grow.
+			pb := (*mBucket)(atomic.LoadPointer(&p.buckets[i&p.mask]))
+			if pb == nil {
+				pb = p.initBucket(i & p.mask)
+			}
+			m := pb.freeze()
+			// Split nodes.
+			for _, x := range m {
+				if x.hash&n.mask == i {
+					node = append(node, x)
+				}
+			}
+		} else {
+			// Shrink.
+			pb0 := (*mBucket)(atomic.LoadPointer(&p.buckets[i]))
+			if pb0 == nil {
+				pb0 = p.initBucket(i)
+			}
+			pb1 := (*mBucket)(atomic.LoadPointer(&p.buckets[i+uint32(len(n.buckets))]))
+			if pb1 == nil {
+				pb1 = p.initBucket(i + uint32(len(n.buckets)))
+			}
+			m0 := pb0.freeze()
+			m1 := pb1.freeze()
+			// Merge nodes.
+			node = make([]*Node, 0, len(m0)+len(m1))
+			node = append(node, m0...)
+			node = append(node, m1...)
+		}
+		b := &mBucket{node: node}
+		if atomic.CompareAndSwapPointer(&n.buckets[i], nil, unsafe.Pointer(b)) {
+			if len(node) > mOverflowThreshold {
+				atomic.AddInt32(&n.overflow, int32(len(node)-mOverflowThreshold))
+			}
+			return b
+		}
+	}
+
+	return (*mBucket)(atomic.LoadPointer(&n.buckets[i]))
+}
+
+func (n *mNode) initBuckets() {
+	for i := range n.buckets {
+		n.initBucket(uint32(i))
+	}
+	atomic.StorePointer(&n.pred, nil)
+}
+
+// Cache is a 'cache map'.
+type Cache struct {
+	mu     sync.RWMutex
+	mHead  unsafe.Pointer // *mNode
+	nodes  int32
+	size   int32
+	cacher Cacher
+	closed bool
+}
+
+// NewCache creates a new 'cache map'. The cacher is optional and
+// may be nil.
+func NewCache(cacher Cacher) *Cache {
+	h := &mNode{
+		buckets:         make([]unsafe.Pointer, mInitialSize),
+		mask:            mInitialSize - 1,
+		growThreshold:   int32(mInitialSize * mOverflowThreshold),
+		shrinkThreshold: 0,
+	}
+	for i := range h.buckets {
+		h.buckets[i] = unsafe.Pointer(&mBucket{})
+	}
+	r := &Cache{
+		mHead:  unsafe.Pointer(h),
+		cacher: cacher,
+	}
+	return r
+}
+
+func (r *Cache) getBucket(hash uint32) (*mNode, *mBucket) {
+	h := (*mNode)(atomic.LoadPointer(&r.mHead))
+	i := hash & h.mask
+	b := (*mBucket)(atomic.LoadPointer(&h.buckets[i]))
+	if b == nil {
+		b = h.initBucket(i)
+	}
+	return h, b
+}
+
+func (r *Cache) delete(n *Node) bool {
+	for {
+		h, b := r.getBucket(n.hash)
+		done, deleted := b.delete(r, h, n.hash, n.ns, n.key)
+		if done {
+			return deleted
+		}
+	}
+	return false
+}
+
+// Nodes returns number of 'cache node' in the map.
+func (r *Cache) Nodes() int {
+	return int(atomic.LoadInt32(&r.nodes))
+}
+
+// Size returns sums of 'cache node' size in the map.
+func (r *Cache) Size() int {
+	return int(atomic.LoadInt32(&r.size))
+}
+
+// Capacity returns cache capacity.
+func (r *Cache) Capacity() int {
+	if r.cacher == nil {
+		return 0
+	}
+	return r.cacher.Capacity()
+}
+
+// SetCapacity sets cache capacity.
+func (r *Cache) SetCapacity(capacity int) {
+	if r.cacher != nil {
+		r.cacher.SetCapacity(capacity)
+	}
+}
+
+// Get gets 'cache node' with the given namespace and key.
+// If cache node is not found and setFunc is not nil, Get will atomically creates
+// the 'cache node' by calling setFunc. Otherwise Get will returns nil.
+//
+// The returned 'cache handle' should be released after use by calling Release
+// method.
+func (r *Cache) Get(ns, key uint64, setFunc func() (size int, value Value)) *Handle {
+	r.mu.RLock()
+	defer r.mu.RUnlock()
+	if r.closed {
+		return nil
+	}
+
+	hash := murmur32(ns, key, 0xf00)
+	for {
+		h, b := r.getBucket(hash)
+		done, _, n := b.get(r, h, hash, ns, key, setFunc == nil)
+		if done {
+			if n != nil {
+				n.mu.Lock()
+				if n.value == nil {
+					if setFunc == nil {
+						n.mu.Unlock()
+						n.unref()
+						return nil
+					}
+
+					n.size, n.value = setFunc()
+					if n.value == nil {
+						n.size = 0
+						n.mu.Unlock()
+						n.unref()
+						return nil
+					}
+					atomic.AddInt32(&r.size, int32(n.size))
+				}
+				n.mu.Unlock()
+				if r.cacher != nil {
+					r.cacher.Promote(n)
+				}
+				return &Handle{unsafe.Pointer(n)}
+			}
+
+			break
+		}
 	}
 	return nil
 }
 
-func (h *fakeHandle) Release() {
-	if !atomic.CompareAndSwapUint32(&h.once, 0, 1) {
+// Delete removes and ban 'cache node' with the given namespace and key.
+// A banned 'cache node' will never inserted into the 'cache tree'. Ban
+// only attributed to the particular 'cache node', so when a 'cache node'
+// is recreated it will not be banned.
+//
+// If onDel is not nil, then it will be executed if such 'cache node'
+// doesn't exist or once the 'cache node' is released.
+//
+// Delete return true is such 'cache node' exist.
+func (r *Cache) Delete(ns, key uint64, onDel func()) bool {
+	r.mu.RLock()
+	defer r.mu.RUnlock()
+	if r.closed {
+		return false
+	}
+
+	hash := murmur32(ns, key, 0xf00)
+	for {
+		h, b := r.getBucket(hash)
+		done, _, n := b.get(r, h, hash, ns, key, true)
+		if done {
+			if n != nil {
+				if onDel != nil {
+					n.mu.Lock()
+					n.onDel = append(n.onDel, onDel)
+					n.mu.Unlock()
+				}
+				if r.cacher != nil {
+					r.cacher.Ban(n)
+				}
+				n.unref()
+				return true
+			}
+
+			break
+		}
+	}
+
+	if onDel != nil {
+		onDel()
+	}
+
+	return false
+}
+
+// Evict evicts 'cache node' with the given namespace and key. This will
+// simply call Cacher.Evict.
+//
+// Evict return true is such 'cache node' exist.
+func (r *Cache) Evict(ns, key uint64) bool {
+	r.mu.RLock()
+	defer r.mu.RUnlock()
+	if r.closed {
+		return false
+	}
+
+	hash := murmur32(ns, key, 0xf00)
+	for {
+		h, b := r.getBucket(hash)
+		done, _, n := b.get(r, h, hash, ns, key, true)
+		if done {
+			if n != nil {
+				if r.cacher != nil {
+					r.cacher.Evict(n)
+				}
+				n.unref()
+				return true
+			}
+
+			break
+		}
+	}
+
+	return false
+}
+
+// EvictNS evicts 'cache node' with the given namespace. This will
+// simply call Cacher.EvictNS.
+func (r *Cache) EvictNS(ns uint64) {
+	r.mu.RLock()
+	defer r.mu.RUnlock()
+	if r.closed {
 		return
 	}
-	if h.fin != nil {
-		h.fin()
-		h.fin = nil
+
+	if r.cacher != nil {
+		r.cacher.EvictNS(ns)
 	}
 }
+
+// EvictAll evicts all 'cache node'. This will simply call Cacher.EvictAll.
+func (r *Cache) EvictAll() {
+	r.mu.RLock()
+	defer r.mu.RUnlock()
+	if r.closed {
+		return
+	}
+
+	if r.cacher != nil {
+		r.cacher.EvictAll()
+	}
+}
+
+// Close closes the 'cache map' and releases all 'cache node'.
+func (r *Cache) Close() error {
+	r.mu.Lock()
+	if !r.closed {
+		r.closed = true
+
+		if r.cacher != nil {
+			if err := r.cacher.Close(); err != nil {
+				return err
+			}
+		}
+
+		h := (*mNode)(r.mHead)
+		h.initBuckets()
+
+		for i := range h.buckets {
+			b := (*mBucket)(h.buckets[i])
+			for _, n := range b.node {
+				// Call releaser.
+				if n.value != nil {
+					if r, ok := n.value.(util.Releaser); ok {
+						r.Release()
+					}
+					n.value = nil
+				}
+
+				// Call OnDel.
+				for _, f := range n.onDel {
+					f()
+				}
+			}
+		}
+	}
+	r.mu.Unlock()
+	return nil
+}
+
+// Node is a 'cache node'.
+type Node struct {
+	r *Cache
+
+	hash    uint32
+	ns, key uint64
+
+	mu    sync.Mutex
+	size  int
+	value Value
+
+	ref   int32
+	onDel []func()
+
+	CacheData unsafe.Pointer
+}
+
+// NS returns this 'cache node' namespace.
+func (n *Node) NS() uint64 {
+	return n.ns
+}
+
+// Key returns this 'cache node' key.
+func (n *Node) Key() uint64 {
+	return n.key
+}
+
+// Size returns this 'cache node' size.
+func (n *Node) Size() int {
+	return n.size
+}
+
+// Value returns this 'cache node' value.
+func (n *Node) Value() Value {
+	return n.value
+}
+
+// Ref returns this 'cache node' ref counter.
+func (n *Node) Ref() int32 {
+	return atomic.LoadInt32(&n.ref)
+}
+
+// GetHandle returns an handle for this 'cache node'.
+func (n *Node) GetHandle() *Handle {
+	if atomic.AddInt32(&n.ref, 1) <= 1 {
+		panic("BUG: Node.GetHandle on zero ref")
+	}
+	return &Handle{unsafe.Pointer(n)}
+}
+
+func (n *Node) unref() {
+	if atomic.AddInt32(&n.ref, -1) == 0 {
+		n.r.delete(n)
+	}
+}
+
+func (n *Node) unrefLocked() {
+	if atomic.AddInt32(&n.ref, -1) == 0 {
+		n.r.mu.RLock()
+		if !n.r.closed {
+			n.r.delete(n)
+		}
+		n.r.mu.RUnlock()
+	}
+}
+
+type Handle struct {
+	n unsafe.Pointer // *Node
+}
+
+func (h *Handle) Value() Value {
+	n := (*Node)(atomic.LoadPointer(&h.n))
+	if n != nil {
+		return n.value
+	}
+	return nil
+}
+
+func (h *Handle) Release() {
+	nPtr := atomic.LoadPointer(&h.n)
+	if nPtr != nil && atomic.CompareAndSwapPointer(&h.n, nPtr, nil) {
+		n := (*Node)(nPtr)
+		n.unrefLocked()
+	}
+}
+
+func murmur32(ns, key uint64, seed uint32) uint32 {
+	const (
+		m = uint32(0x5bd1e995)
+		r = 24
+	)
+
+	k1 := uint32(ns >> 32)
+	k2 := uint32(ns)
+	k3 := uint32(key >> 32)
+	k4 := uint32(key)
+
+	k1 *= m
+	k1 ^= k1 >> r
+	k1 *= m
+
+	k2 *= m
+	k2 ^= k2 >> r
+	k2 *= m
+
+	k3 *= m
+	k3 ^= k3 >> r
+	k3 *= m
+
+	k4 *= m
+	k4 ^= k4 >> r
+	k4 *= m
+
+	h := seed
+
+	h *= m
+	h ^= k1
+	h *= m
+	h ^= k2
+	h *= m
+	h ^= k3
+	h *= m
+	h ^= k4
+
+	h ^= h >> 13
+	h *= m
+	h ^= h >> 15
+
+	return h
+}

Godeps/_workspace/src/github.com/syndtr/goleveldb/leveldb/cache/cache_test.go

@@ -13,11 +13,26 @@ import (
 	"sync/atomic"
 	"testing"
 	"time"
+	"unsafe"
 )
 
+type int32o int32
+
+func (o *int32o) acquire() {
+	if atomic.AddInt32((*int32)(o), 1) != 1 {
+		panic("BUG: invalid ref")
+	}
+}
+
+func (o *int32o) Release() {
+	if atomic.AddInt32((*int32)(o), -1) != 0 {
+		panic("BUG: invalid ref")
+	}
+}
+
 type releaserFunc struct {
 	fn    func()
-	value interface{}
+	value Value
 }
 
 func (r releaserFunc) Release() {
@@ -26,8 +41,8 @@ func (r releaserFunc) Release() {
 	}
 }
 
-func set(ns Namespace, key uint64, value interface{}, charge int, relf func()) Handle {
-	return ns.Get(key, func() (int, interface{}) {
+func set(c *Cache, ns, key uint64, value Value, charge int, relf func()) *Handle {
+	return c.Get(ns, key, func() (int, Value) {
 		if relf != nil {
 			return charge, releaserFunc{relf, value}
 		} else {
@@ -36,7 +51,246 @@ func set(ns Namespace, key uint64, value interface{}, charge int, relf func()) H
 	})
 }
 
-func TestCache_HitMiss(t *testing.T) {
+func TestCacheMap(t *testing.T) {
+	runtime.GOMAXPROCS(runtime.NumCPU())
+
+	nsx := []struct {
+		nobjects, nhandles, concurrent, repeat int
+	}{
+		{10000, 400, 50, 3},
+		{100000, 1000, 100, 10},
+	}
+
+	var (
+		objects [][]int32o
+		handles [][]unsafe.Pointer
+	)
+
+	for _, x := range nsx {
+		objects = append(objects, make([]int32o, x.nobjects))
+		handles = append(handles, make([]unsafe.Pointer, x.nhandles))
+	}
+
+	c := NewCache(nil)
+
+	wg := new(sync.WaitGroup)
+	var done int32
+
+	for ns, x := range nsx {
+		for i := 0; i < x.concurrent; i++ {
+			wg.Add(1)
+			go func(ns, i, repeat int, objects []int32o, handles []unsafe.Pointer) {
+				defer wg.Done()
+				r := rand.New(rand.NewSource(time.Now().UnixNano()))
+
+				for j := len(objects) * repeat; j >= 0; j-- {
+					key := uint64(r.Intn(len(objects)))
+					h := c.Get(uint64(ns), key, func() (int, Value) {
+						o := &objects[key]
+						o.acquire()
+						return 1, o
+					})
+					if v := h.Value().(*int32o); v != &objects[key] {
+						t.Fatalf("#%d invalid value: want=%p got=%p", ns, &objects[key], v)
+					}
+					if objects[key] != 1 {
+						t.Fatalf("#%d invalid object %d: %d", ns, key, objects[key])
+					}
+					if !atomic.CompareAndSwapPointer(&handles[r.Intn(len(handles))], nil, unsafe.Pointer(h)) {
+						h.Release()
+					}
+				}
+			}(ns, i, x.repeat, objects[ns], handles[ns])
+		}
+
+		go func(handles []unsafe.Pointer) {
+			r := rand.New(rand.NewSource(time.Now().UnixNano()))
+
+			for atomic.LoadInt32(&done) == 0 {
+				i := r.Intn(len(handles))
+				h := (*Handle)(atomic.LoadPointer(&handles[i]))
+				if h != nil && atomic.CompareAndSwapPointer(&handles[i], unsafe.Pointer(h), nil) {
+					h.Release()
+				}
+				time.Sleep(time.Millisecond)
+			}
+		}(handles[ns])
+	}
+
+	go func() {
+		handles := make([]*Handle, 100000)
+		for atomic.LoadInt32(&done) == 0 {
+			for i := range handles {
+				handles[i] = c.Get(999999999, uint64(i), func() (int, Value) {
+					return 1, 1
+				})
+			}
+			for _, h := range handles {
+				h.Release()
+			}
+		}
+	}()
+
+	wg.Wait()
+
+	atomic.StoreInt32(&done, 1)
+
+	for _, handles0 := range handles {
+		for i := range handles0 {
+			h := (*Handle)(atomic.LoadPointer(&handles0[i]))
+			if h != nil && atomic.CompareAndSwapPointer(&handles0[i], unsafe.Pointer(h), nil) {
+				h.Release()
+			}
+		}
+	}
+
+	for ns, objects0 := range objects {
+		for i, o := range objects0 {
+			if o != 0 {
+				t.Fatalf("invalid object #%d.%d: ref=%d", ns, i, o)
+			}
+		}
+	}
+}
+
+func TestCacheMap_NodesAndSize(t *testing.T) {
+	c := NewCache(nil)
+	if c.Nodes() != 0 {
+		t.Errorf("invalid nodes counter: want=%d got=%d", 0, c.Nodes())
+	}
+	if c.Size() != 0 {
+		t.Errorf("invalid size counter: want=%d got=%d", 0, c.Size())
+	}
+	set(c, 0, 1, 1, 1, nil)
+	set(c, 0, 2, 2, 2, nil)
+	set(c, 1, 1, 3, 3, nil)
+	set(c, 2, 1, 4, 1, nil)
+	if c.Nodes() != 4 {
+		t.Errorf("invalid nodes counter: want=%d got=%d", 4, c.Nodes())
+	}
+	if c.Size() != 7 {
+		t.Errorf("invalid size counter: want=%d got=%d", 4, c.Size())
+	}
+}
+
+func TestLRUCache_Capacity(t *testing.T) {
+	c := NewCache(NewLRU(10))
+	if c.Capacity() != 10 {
+		t.Errorf("invalid capacity: want=%d got=%d", 10, c.Capacity())
+	}
+	set(c, 0, 1, 1, 1, nil).Release()
+	set(c, 0, 2, 2, 2, nil).Release()
+	set(c, 1, 1, 3, 3, nil).Release()
+	set(c, 2, 1, 4, 1, nil).Release()
+	set(c, 2, 2, 5, 1, nil).Release()
+	set(c, 2, 3, 6, 1, nil).Release()
+	set(c, 2, 4, 7, 1, nil).Release()
+	set(c, 2, 5, 8, 1, nil).Release()
+	if c.Nodes() != 7 {
+		t.Errorf("invalid nodes counter: want=%d got=%d", 7, c.Nodes())
+	}
+	if c.Size() != 10 {
+		t.Errorf("invalid size counter: want=%d got=%d", 10, c.Size())
+	}
+	c.SetCapacity(9)
+	if c.Capacity() != 9 {
+		t.Errorf("invalid capacity: want=%d got=%d", 9, c.Capacity())
+	}
+	if c.Nodes() != 6 {
+		t.Errorf("invalid nodes counter: want=%d got=%d", 6, c.Nodes())
+	}
+	if c.Size() != 8 {
+		t.Errorf("invalid size counter: want=%d got=%d", 8, c.Size())
+	}
+}
+
+func TestCacheMap_NilValue(t *testing.T) {
+	c := NewCache(NewLRU(10))
+	h := c.Get(0, 0, func() (size int, value Value) {
+		return 1, nil
+	})
+	if h != nil {
+		t.Error("cache handle is non-nil")
+	}
+	if c.Nodes() != 0 {
+		t.Errorf("invalid nodes counter: want=%d got=%d", 0, c.Nodes())
+	}
+	if c.Size() != 0 {
+		t.Errorf("invalid size counter: want=%d got=%d", 0, c.Size())
+	}
+}
+
+func TestLRUCache_GetLatency(t *testing.T) {
+	runtime.GOMAXPROCS(runtime.NumCPU())
+
+	const (
+		concurrentSet = 30
+		concurrentGet = 3
+		duration      = 3 * time.Second
+		delay         = 3 * time.Millisecond
+		maxkey        = 100000
+	)
+
+	var (
+		set, getHit, getAll        int32
+		getMaxLatency, getDuration int64
+	)
+
+	c := NewCache(NewLRU(5000))
+	wg := &sync.WaitGroup{}
+	until := time.Now().Add(duration)
+	for i := 0; i < concurrentSet; i++ {
+		wg.Add(1)
+		go func(i int) {
+			defer wg.Done()
+			r := rand.New(rand.NewSource(time.Now().UnixNano()))
+			for time.Now().Before(until) {
+				c.Get(0, uint64(r.Intn(maxkey)), func() (int, Value) {
+					time.Sleep(delay)
+					atomic.AddInt32(&set, 1)
+					return 1, 1
+				}).Release()
+			}
+		}(i)
+	}
+	for i := 0; i < concurrentGet; i++ {
+		wg.Add(1)
+		go func(i int) {
+			defer wg.Done()
+			r := rand.New(rand.NewSource(time.Now().UnixNano()))
+			for {
+				mark := time.Now()
+				if mark.Before(until) {
+					h := c.Get(0, uint64(r.Intn(maxkey)), nil)
+					latency := int64(time.Now().Sub(mark))
+					m := atomic.LoadInt64(&getMaxLatency)
+					if latency > m {
+						atomic.CompareAndSwapInt64(&getMaxLatency, m, latency)
+					}
+					atomic.AddInt64(&getDuration, latency)
+					if h != nil {
+						atomic.AddInt32(&getHit, 1)
+						h.Release()
+					}
+					atomic.AddInt32(&getAll, 1)
+				} else {
+					break
+				}
+			}
+		}(i)
+	}
+
+	wg.Wait()
+	getAvglatency := time.Duration(getDuration) / time.Duration(getAll)
+	t.Logf("set=%d getHit=%d getAll=%d getMaxLatency=%v getAvgLatency=%v",
+		set, getHit, getAll, time.Duration(getMaxLatency), getAvglatency)
+
+	if getAvglatency > delay/3 {
+		t.Errorf("get avg latency > %v: got=%v", delay/3, getAvglatency)
+	}
+}
+
+func TestLRUCache_HitMiss(t *testing.T) {
 	cases := []struct {
 		key   uint64
 		value string
@@ -54,14 +308,13 @@ func TestCache_HitMiss(t *testing.T) {
 	}
 
 	setfin := 0
-	c := NewLRUCache(1000)
-	ns := c.GetNamespace(0)
+	c := NewCache(NewLRU(1000))
 	for i, x := range cases {
-		set(ns, x.key, x.value, len(x.value), func() {
+		set(c, 0, x.key, x.value, len(x.value), func() {
 			setfin++
 		}).Release()
 		for j, y := range cases {
-			h := ns.Get(y.key, nil)
+			h := c.Get(0, y.key, nil)
 			if j <= i {
 				// should hit
 				if h == nil {
@@ -85,7 +338,7 @@ func TestCache_HitMiss(t *testing.T) {
 
 	for i, x := range cases {
 		finalizerOk := false
-		ns.Delete(x.key, func(exist, pending bool) {
+		c.Delete(0, x.key, func() {
 			finalizerOk = true
 		})
 
@@ -94,7 +347,7 @@ func TestCache_HitMiss(t *testing.T) {
 		}
 
 		for j, y := range cases {
-			h := ns.Get(y.key, nil)
+			h := c.Get(0, y.key, nil)
 			if j > i {
 				// should hit
 				if h == nil {
@@ -122,20 +375,19 @@ func TestCache_HitMiss(t *testing.T) {
 }
 
 func TestLRUCache_Eviction(t *testing.T) {
-	c := NewLRUCache(12)
-	ns := c.GetNamespace(0)
-	o1 := set(ns, 1, 1, 1, nil)
-	set(ns, 2, 2, 1, nil).Release()
-	set(ns, 3, 3, 1, nil).Release()
-	set(ns, 4, 4, 1, nil).Release()
-	set(ns, 5, 5, 1, nil).Release()
-	if h := ns.Get(2, nil); h != nil { // 1,3,4,5,2
+	c := NewCache(NewLRU(12))
+	o1 := set(c, 0, 1, 1, 1, nil)
+	set(c, 0, 2, 2, 1, nil).Release()
+	set(c, 0, 3, 3, 1, nil).Release()
+	set(c, 0, 4, 4, 1, nil).Release()
+	set(c, 0, 5, 5, 1, nil).Release()
+	if h := c.Get(0, 2, nil); h != nil { // 1,3,4,5,2
 		h.Release()
 	}
-	set(ns, 9, 9, 10, nil).Release() // 5,2,9
+	set(c, 0, 9, 9, 10, nil).Release() // 5,2,9
 
 	for _, key := range []uint64{9, 2, 5, 1} {
-		h := ns.Get(key, nil)
+		h := c.Get(0, key, nil)
 		if h == nil {
 			t.Errorf("miss for key '%d'", key)
 		} else {
@@ -147,7 +399,7 @@ func TestLRUCache_Eviction(t *testing.T) {
 	}
 	o1.Release()
 	for _, key := range []uint64{1, 2, 5} {
-		h := ns.Get(key, nil)
+		h := c.Get(0, key, nil)
 		if h == nil {
 			t.Errorf("miss for key '%d'", key)
 		} else {
@@ -158,7 +410,7 @@ func TestLRUCache_Eviction(t *testing.T) {
 		}
 	}
 	for _, key := range []uint64{3, 4, 9} {
-		h := ns.Get(key, nil)
+		h := c.Get(0, key, nil)
 		if h != nil {
 			t.Errorf("hit for key '%d'", key)
 			if x := h.Value().(int); x != int(key) {
@@ -169,487 +421,150 @@ func TestLRUCache_Eviction(t *testing.T) {
 	}
 }
 
-func TestLRUCache_SetGet(t *testing.T) {
-	c := NewLRUCache(13)
-	ns := c.GetNamespace(0)
-	for i := 0; i < 200; i++ {
-		n := uint64(rand.Intn(99999) % 20)
-		set(ns, n, n, 1, nil).Release()
-		if h := ns.Get(n, nil); h != nil {
-			if h.Value() == nil {
-				t.Errorf("key '%d' contains nil value", n)
+func TestLRUCache_Evict(t *testing.T) {
+	c := NewCache(NewLRU(6))
+	set(c, 0, 1, 1, 1, nil).Release()
+	set(c, 0, 2, 2, 1, nil).Release()
+	set(c, 1, 1, 4, 1, nil).Release()
+	set(c, 1, 2, 5, 1, nil).Release()
+	set(c, 2, 1, 6, 1, nil).Release()
+	set(c, 2, 2, 7, 1, nil).Release()
+
+	for ns := 0; ns < 3; ns++ {
+		for key := 1; key < 3; key++ {
+			if h := c.Get(uint64(ns), uint64(key), nil); h != nil {
+				h.Release()
 			} else {
-				if x := h.Value().(uint64); x != n {
-					t.Errorf("invalid value for key '%d' want '%d', got '%d'", n, n, x)
-				}
+				t.Errorf("Cache.Get on #%d.%d return nil", ns, key)
 			}
+		}
+	}
+
+	if ok := c.Evict(0, 1); !ok {
+		t.Error("first Cache.Evict on #0.1 return false")
+	}
+	if ok := c.Evict(0, 1); ok {
+		t.Error("second Cache.Evict on #0.1 return true")
+	}
+	if h := c.Get(0, 1, nil); h != nil {
+		t.Errorf("Cache.Get on #0.1 return non-nil: %v", h.Value())
+	}
+
+	c.EvictNS(1)
+	if h := c.Get(1, 1, nil); h != nil {
+		t.Errorf("Cache.Get on #1.1 return non-nil: %v", h.Value())
+	}
+	if h := c.Get(1, 2, nil); h != nil {
+		t.Errorf("Cache.Get on #1.2 return non-nil: %v", h.Value())
+	}
+
+	c.EvictAll()
+	for ns := 0; ns < 3; ns++ {
+		for key := 1; key < 3; key++ {
+			if h := c.Get(uint64(ns), uint64(key), nil); h != nil {
+				t.Errorf("Cache.Get on #%d.%d return non-nil: %v", ns, key, h.Value())
+			}
+		}
+	}
+}
+
+func TestLRUCache_Delete(t *testing.T) {
+	delFuncCalled := 0
+	delFunc := func() {
+		delFuncCalled++
+	}
+
+	c := NewCache(NewLRU(2))
+	set(c, 0, 1, 1, 1, nil).Release()
+	set(c, 0, 2, 2, 1, nil).Release()
+
+	if ok := c.Delete(0, 1, delFunc); !ok {
+		t.Error("Cache.Delete on #1 return false")
+	}
+	if h := c.Get(0, 1, nil); h != nil {
+		t.Errorf("Cache.Get on #1 return non-nil: %v", h.Value())
+	}
+	if ok := c.Delete(0, 1, delFunc); ok {
+		t.Error("Cache.Delete on #1 return true")
+	}
+
+	h2 := c.Get(0, 2, nil)
+	if h2 == nil {
+		t.Error("Cache.Get on #2 return nil")
+	}
+	if ok := c.Delete(0, 2, delFunc); !ok {
+		t.Error("(1) Cache.Delete on #2 return false")
+	}
+	if ok := c.Delete(0, 2, delFunc); !ok {
+		t.Error("(2) Cache.Delete on #2 return false")
+	}
+
+	set(c, 0, 3, 3, 1, nil).Release()
+	set(c, 0, 4, 4, 1, nil).Release()
+	c.Get(0, 2, nil).Release()
+
+	for key := 2; key <= 4; key++ {
+		if h := c.Get(0, uint64(key), nil); h != nil {
 			h.Release()
 		} else {
-			t.Errorf("key '%d' doesn't exist", n)
-		}
-	}
-}
-
-func TestLRUCache_Purge(t *testing.T) {
-	c := NewLRUCache(3)
-	ns1 := c.GetNamespace(0)
-	o1 := set(ns1, 1, 1, 1, nil)
-	o2 := set(ns1, 2, 2, 1, nil)
-	ns1.Purge(nil)
-	set(ns1, 3, 3, 1, nil).Release()
-	for _, key := range []uint64{1, 2, 3} {
-		h := ns1.Get(key, nil)
-		if h == nil {
-			t.Errorf("miss for key '%d'", key)
-		} else {
-			if x := h.Value().(int); x != int(key) {
-				t.Errorf("invalid value for key '%d' want '%d', got '%d'", key, key, x)
-			}
-			h.Release()
-		}
-	}
-	o1.Release()
-	o2.Release()
-	for _, key := range []uint64{1, 2} {
-		h := ns1.Get(key, nil)
-		if h != nil {
-			t.Errorf("hit for key '%d'", key)
-			if x := h.Value().(int); x != int(key) {
-				t.Errorf("invalid value for key '%d' want '%d', got '%d'", key, key, x)
-			}
-			h.Release()
-		}
-	}
-}
-
-type testingCacheObjectCounter struct {
-	created  uint
-	released uint
-}
-
-func (c *testingCacheObjectCounter) createOne() {
-	c.created++
-}
-
-func (c *testingCacheObjectCounter) releaseOne() {
-	c.released++
-}
-
-type testingCacheObject struct {
-	t   *testing.T
-	cnt *testingCacheObjectCounter
-
-	ns, key uint64
-
-	releaseCalled bool
-}
-
-func (x *testingCacheObject) Release() {
-	if !x.releaseCalled {
-		x.releaseCalled = true
-		x.cnt.releaseOne()
-	} else {
-		x.t.Errorf("duplicate setfin NS#%d KEY#%d", x.ns, x.key)
-	}
-}
-
-func TestLRUCache_ConcurrentSetGet(t *testing.T) {
-	runtime.GOMAXPROCS(runtime.NumCPU())
-
-	seed := time.Now().UnixNano()
-	t.Logf("seed=%d", seed)
-
-	const (
-		N = 2000000
-		M = 4000
-		C = 3
-	)
-
-	var set, get uint32
-
-	wg := &sync.WaitGroup{}
-	c := NewLRUCache(M / 4)
-	for ni := uint64(0); ni < C; ni++ {
-		r0 := rand.New(rand.NewSource(seed + int64(ni)))
-		r1 := rand.New(rand.NewSource(seed + int64(ni) + 1))
-		ns := c.GetNamespace(ni)
-
-		wg.Add(2)
-		go func(ns Namespace, r *rand.Rand) {
-			for i := 0; i < N; i++ {
-				x := uint64(r.Int63n(M))
-				o := ns.Get(x, func() (int, interface{}) {
-					atomic.AddUint32(&set, 1)
-					return 1, x
-				})
-				if v := o.Value().(uint64); v != x {
-					t.Errorf("#%d invalid value, got=%d", x, v)
-				}
-				o.Release()
-			}
-			wg.Done()
-		}(ns, r0)
-		go func(ns Namespace, r *rand.Rand) {
-			for i := 0; i < N; i++ {
-				x := uint64(r.Int63n(M))
-				o := ns.Get(x, nil)
-				if o != nil {
-					atomic.AddUint32(&get, 1)
-					if v := o.Value().(uint64); v != x {
-						t.Errorf("#%d invalid value, got=%d", x, v)
-					}
-					o.Release()
-				}
-			}
-			wg.Done()
-		}(ns, r1)
-	}
-
-	wg.Wait()
-
-	t.Logf("set=%d get=%d", set, get)
-}
-
-func TestLRUCache_Finalizer(t *testing.T) {
-	const (
-		capacity   = 100
-		goroutines = 100
-		iterations = 10000
-		keymax     = 8000
-	)
-
-	cnt := &testingCacheObjectCounter{}
-
-	c := NewLRUCache(capacity)
-
-	type instance struct {
-		seed       int64
-		rnd        *rand.Rand
-		nsid       uint64
-		ns         Namespace
-		effective  int
-		handles    []Handle
-		handlesMap map[uint64]int
-
-		delete          bool
-		purge           bool
-		zap             bool
-		wantDel         int
-		delfinCalled    int
-		delfinCalledAll int
-		delfinCalledEff int
-		purgefinCalled  int
-	}
-
-	instanceGet := func(p *instance, key uint64) {
-		h := p.ns.Get(key, func() (charge int, value interface{}) {
-			to := &testingCacheObject{
-				t: t, cnt: cnt,
-				ns:  p.nsid,
-				key: key,
-			}
-			p.effective++
-			cnt.createOne()
-			return 1, releaserFunc{func() {
-				to.Release()
-				p.effective--
-			}, to}
-		})
-		p.handles = append(p.handles, h)
-		p.handlesMap[key] = p.handlesMap[key] + 1
-	}
-	instanceRelease := func(p *instance, i int) {
-		h := p.handles[i]
-		key := h.Value().(releaserFunc).value.(*testingCacheObject).key
-		if n := p.handlesMap[key]; n == 0 {
-			t.Fatal("key ref == 0")
-		} else if n > 1 {
-			p.handlesMap[key] = n - 1
-		} else {
-			delete(p.handlesMap, key)
-		}
-		h.Release()
-		p.handles = append(p.handles[:i], p.handles[i+1:]...)
-		p.handles[len(p.handles) : len(p.handles)+1][0] = nil
-	}
-
-	seed := time.Now().UnixNano()
-	t.Logf("seed=%d", seed)
-
-	instances := make([]*instance, goroutines)
-	for i := range instances {
-		p := &instance{}
-		p.handlesMap = make(map[uint64]int)
-		p.seed = seed + int64(i)
-		p.rnd = rand.New(rand.NewSource(p.seed))
-		p.nsid = uint64(i)
-		p.ns = c.GetNamespace(p.nsid)
-		p.delete = i%6 == 0
-		p.purge = i%8 == 0
-		p.zap = i%12 == 0 || i%3 == 0
-		instances[i] = p
-	}
-
-	runr := rand.New(rand.NewSource(seed - 1))
-	run := func(rnd *rand.Rand, x []*instance, init func(p *instance) bool, fn func(p *instance, i int) bool) {
-		var (
-			rx []*instance
-			rn []int
-		)
-		if init == nil {
-			rx = append([]*instance{}, x...)
-			rn = make([]int, len(x))
-		} else {
-			for _, p := range x {
-				if init(p) {
-					rx = append(rx, p)
-					rn = append(rn, 0)
-				}
-			}
-		}
-		for len(rx) > 0 {
-			i := rand.Intn(len(rx))
-			if fn(rx[i], rn[i]) {
-				rn[i]++
-			} else {
-				rx = append(rx[:i], rx[i+1:]...)
-				rn = append(rn[:i], rn[i+1:]...)
-			}
+			t.Errorf("Cache.Get on #%d return nil", key)
 		}
 	}
 
-	// Get and release.
-	run(runr, instances, nil, func(p *instance, i int) bool {
-		if i < iterations {
-			if len(p.handles) == 0 || p.rnd.Int()%2 == 0 {
-				instanceGet(p, uint64(p.rnd.Intn(keymax)))
-			} else {
-				instanceRelease(p, p.rnd.Intn(len(p.handles)))
-			}
-			return true
-		} else {
-			return false
+	h2.Release()
+	if h := c.Get(0, 2, nil); h != nil {
+		t.Errorf("Cache.Get on #2 return non-nil: %v", h.Value())
+	}
+
+	if delFuncCalled != 4 {
+		t.Errorf("delFunc isn't called 4 times: got=%d", delFuncCalled)
+	}
+}
+
+func TestLRUCache_Close(t *testing.T) {
+	relFuncCalled := 0
+	relFunc := func() {
+		relFuncCalled++
+	}
+	delFuncCalled := 0
+	delFunc := func() {
+		delFuncCalled++
+	}
+
+	c := NewCache(NewLRU(2))
+	set(c, 0, 1, 1, 1, relFunc).Release()
+	set(c, 0, 2, 2, 1, relFunc).Release()
+
+	h3 := set(c, 0, 3, 3, 1, relFunc)
+	if h3 == nil {
+		t.Error("Cache.Get on #3 return nil")
+	}
+	if ok := c.Delete(0, 3, delFunc); !ok {
+		t.Error("Cache.Delete on #3 return false")
+	}
+
+	c.Close()
+
+	if relFuncCalled != 3 {
+		t.Errorf("relFunc isn't called 3 times: got=%d", relFuncCalled)
+	}
+	if delFuncCalled != 1 {
+		t.Errorf("delFunc isn't called 1 times: got=%d", delFuncCalled)
+	}
+}
+
+func BenchmarkLRUCache(b *testing.B) {
+	c := NewCache(NewLRU(10000))
+
+	b.SetParallelism(10)
+	b.RunParallel(func(pb *testing.PB) {
+		r := rand.New(rand.NewSource(time.Now().UnixNano()))
+
+		for pb.Next() {
+			key := uint64(r.Intn(1000000))
+			c.Get(0, key, func() (int, Value) {
+				return 1, key
+			}).Release()
 		}
 	})
-
-	if used, cap := c.Used(), c.Capacity(); used > cap {
-		t.Errorf("Used > capacity, used=%d cap=%d", used, cap)
-	}
-
-	// Check effective objects.
-	for i, p := range instances {
-		if int(p.effective) < len(p.handlesMap) {
-			t.Errorf("#%d effective objects < acquired handle, eo=%d ah=%d", i, p.effective, len(p.handlesMap))
-		}
-	}
-
-	if want := int(cnt.created - cnt.released); c.Size() != want {
-		t.Errorf("Invalid cache size, want=%d got=%d", want, c.Size())
-	}
-
-	// First delete.
-	run(runr, instances, func(p *instance) bool {
-		p.wantDel = p.effective
-		return p.delete
-	}, func(p *instance, i int) bool {
-		key := uint64(i)
-		if key < keymax {
-			_, wantExist := p.handlesMap[key]
-			gotExist := p.ns.Delete(key, func(exist, pending bool) {
-				p.delfinCalledAll++
-				if exist {
-					p.delfinCalledEff++
-				}
-			})
-			if !gotExist && wantExist {
-				t.Errorf("delete on NS#%d KEY#%d not found", p.nsid, key)
-			}
-			return true
-		} else {
-			return false
-		}
-	})
-
-	// Second delete.
-	run(runr, instances, func(p *instance) bool {
-		p.delfinCalled = 0
-		return p.delete
-	}, func(p *instance, i int) bool {
-		key := uint64(i)
-		if key < keymax {
-			gotExist := p.ns.Delete(key, func(exist, pending bool) {
-				if exist && !pending {
-					t.Errorf("delete fin on NS#%d KEY#%d exist and not pending for deletion", p.nsid, key)
-				}
-				p.delfinCalled++
-			})
-			if gotExist {
-				t.Errorf("delete on NS#%d KEY#%d found", p.nsid, key)
-			}
-			return true
-		} else {
-			if p.delfinCalled != keymax {
-				t.Errorf("(2) NS#%d not all delete fin called, diff=%d", p.nsid, keymax-p.delfinCalled)
-			}
-			return false
-		}
-	})
-
-	// Purge.
-	run(runr, instances, func(p *instance) bool {
-		return p.purge
-	}, func(p *instance, i int) bool {
-		p.ns.Purge(func(ns, key uint64) {
-			p.purgefinCalled++
-		})
-		return false
-	})
-
-	if want := int(cnt.created - cnt.released); c.Size() != want {
-		t.Errorf("Invalid cache size, want=%d got=%d", want, c.Size())
-	}
-
-	// Release.
-	run(runr, instances, func(p *instance) bool {
-		return !p.zap
-	}, func(p *instance, i int) bool {
-		if len(p.handles) > 0 {
-			instanceRelease(p, len(p.handles)-1)
-			return true
-		} else {
-			return false
-		}
-	})
-
-	if want := int(cnt.created - cnt.released); c.Size() != want {
-		t.Errorf("Invalid cache size, want=%d got=%d", want, c.Size())
-	}
-
-	// Zap.
-	run(runr, instances, func(p *instance) bool {
-		return p.zap
-	}, func(p *instance, i int) bool {
-		p.ns.Zap()
-		p.handles = nil
-		p.handlesMap = nil
-		return false
-	})
-
-	if want := int(cnt.created - cnt.released); c.Size() != want {
-		t.Errorf("Invalid cache size, want=%d got=%d", want, c.Size())
-	}
-
-	if notrel, used := int(cnt.created-cnt.released), c.Used(); notrel != used {
-		t.Errorf("Invalid used value, want=%d got=%d", notrel, used)
-	}
-
-	c.Purge(nil)
-
-	for _, p := range instances {
-		if p.delete {
-			if p.delfinCalledAll != keymax {
-				t.Errorf("#%d not all delete fin called, purge=%v zap=%v diff=%d", p.nsid, p.purge, p.zap, keymax-p.delfinCalledAll)
-			}
-			if p.delfinCalledEff != p.wantDel {
-				t.Errorf("#%d not all effective delete fin called, diff=%d", p.nsid, p.wantDel-p.delfinCalledEff)
-			}
-			if p.purge && p.purgefinCalled > 0 {
-				t.Errorf("#%d some purge fin called, delete=%v zap=%v n=%d", p.nsid, p.delete, p.zap, p.purgefinCalled)
-			}
-		} else {
-			if p.purge {
-				if p.purgefinCalled != p.wantDel {
-					t.Errorf("#%d not all purge fin called, delete=%v zap=%v diff=%d", p.nsid, p.delete, p.zap, p.wantDel-p.purgefinCalled)
-				}
-			}
-		}
-	}
-
-	if cnt.created != cnt.released {
-		t.Errorf("Some cache object weren't released, created=%d released=%d", cnt.created, cnt.released)
-	}
-}
-
-func BenchmarkLRUCache_Set(b *testing.B) {
-	c := NewLRUCache(0)
-	ns := c.GetNamespace(0)
-	b.ResetTimer()
-	for i := uint64(0); i < uint64(b.N); i++ {
-		set(ns, i, "", 1, nil)
-	}
-}
-
-func BenchmarkLRUCache_Get(b *testing.B) {
-	c := NewLRUCache(0)
-	ns := c.GetNamespace(0)
-	b.ResetTimer()
-	for i := uint64(0); i < uint64(b.N); i++ {
-		set(ns, i, "", 1, nil)
-	}
-	b.ResetTimer()
-	for i := uint64(0); i < uint64(b.N); i++ {
-		ns.Get(i, nil)
-	}
-}
-
-func BenchmarkLRUCache_Get2(b *testing.B) {
-	c := NewLRUCache(0)
-	ns := c.GetNamespace(0)
-	b.ResetTimer()
-	for i := uint64(0); i < uint64(b.N); i++ {
-		set(ns, i, "", 1, nil)
-	}
-	b.ResetTimer()
-	for i := uint64(0); i < uint64(b.N); i++ {
-		ns.Get(i, func() (charge int, value interface{}) {
-			return 0, nil
-		})
-	}
-}
-
-func BenchmarkLRUCache_Release(b *testing.B) {
-	c := NewLRUCache(0)
-	ns := c.GetNamespace(0)
-	handles := make([]Handle, b.N)
-	for i := uint64(0); i < uint64(b.N); i++ {
-		handles[i] = set(ns, i, "", 1, nil)
-	}
-	b.ResetTimer()
-	for _, h := range handles {
-		h.Release()
-	}
-}
-
-func BenchmarkLRUCache_SetRelease(b *testing.B) {
-	capacity := b.N / 100
-	if capacity <= 0 {
-		capacity = 10
-	}
-	c := NewLRUCache(capacity)
-	ns := c.GetNamespace(0)
-	b.ResetTimer()
-	for i := uint64(0); i < uint64(b.N); i++ {
-		set(ns, i, "", 1, nil).Release()
-	}
-}
-
-func BenchmarkLRUCache_SetReleaseTwice(b *testing.B) {
-	capacity := b.N / 100
-	if capacity <= 0 {
-		capacity = 10
-	}
-	c := NewLRUCache(capacity)
-	ns := c.GetNamespace(0)
-	b.ResetTimer()
-
-	na := b.N / 2
-	nb := b.N - na
-
-	for i := uint64(0); i < uint64(na); i++ {
-		set(ns, i, "", 1, nil).Release()
-	}
-
-	for i := uint64(0); i < uint64(nb); i++ {
-		set(ns, i, "", 1, nil).Release()
-	}
 }

Godeps/_workspace/src/github.com/syndtr/goleveldb/leveldb/cache/lru.go

@@ -0,0 +1,195 @@
+// Copyright (c) 2012, Suryandaru Triandana <syndtr@gmail.com>
+// All rights reserved.
+//
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package cache
+
+import (
+	"sync"
+	"unsafe"
+)
+
+type lruNode struct {
+	n   *Node
+	h   *Handle
+	ban bool
+
+	next, prev *lruNode
+}
+
+func (n *lruNode) insert(at *lruNode) {
+	x := at.next
+	at.next = n
+	n.prev = at
+	n.next = x
+	x.prev = n
+}
+
+func (n *lruNode) remove() {
+	if n.prev != nil {
+		n.prev.next = n.next
+		n.next.prev = n.prev
+		n.prev = nil
+		n.next = nil
+	} else {
+		panic("BUG: removing removed node")
+	}
+}
+
+type lru struct {
+	mu       sync.Mutex
+	capacity int
+	used     int
+	recent   lruNode
+}
+
+func (r *lru) reset() {
+	r.recent.next = &r.recent
+	r.recent.prev = &r.recent
+	r.used = 0
+}
+
+func (r *lru) Capacity() int {
+	r.mu.Lock()
+	defer r.mu.Unlock()
+	return r.capacity
+}
+
+func (r *lru) SetCapacity(capacity int) {
+	var evicted []*lruNode
+
+	r.mu.Lock()
+	r.capacity = capacity
+	for r.used > r.capacity {
+		rn := r.recent.prev
+		if rn == nil {
+			panic("BUG: invalid LRU used or capacity counter")
+		}
+		rn.remove()
+		rn.n.CacheData = nil
+		r.used -= rn.n.Size()
+		evicted = append(evicted, rn)
+	}
+	r.mu.Unlock()
+
+	for _, rn := range evicted {
+		rn.h.Release()
+	}
+}
+
+func (r *lru) Promote(n *Node) {
+	var evicted []*lruNode
+
+	r.mu.Lock()
+	if n.CacheData == nil {
+		if n.Size() <= r.capacity {
+			rn := &lruNode{n: n, h: n.GetHandle()}
+			rn.insert(&r.recent)
+			n.CacheData = unsafe.Pointer(rn)
+			r.used += n.Size()
+
+			for r.used > r.capacity {
+				rn := r.recent.prev
+				if rn == nil {
+					panic("BUG: invalid LRU used or capacity counter")
+				}
+				rn.remove()
+				rn.n.CacheData = nil
+				r.used -= rn.n.Size()
+				evicted = append(evicted, rn)
+			}
+		}
+	} else {
+		rn := (*lruNode)(n.CacheData)
+		if !rn.ban {
+			rn.remove()
+			rn.insert(&r.recent)
+		}
+	}
+	r.mu.Unlock()
+
+	for _, rn := range evicted {
+		rn.h.Release()
+	}
+}
+
+func (r *lru) Ban(n *Node) {
+	r.mu.Lock()
+	if n.CacheData == nil {
+		n.CacheData = unsafe.Pointer(&lruNode{n: n, ban: true})
+	} else {
+		rn := (*lruNode)(n.CacheData)
+		if !rn.ban {
+			rn.remove()
+			rn.ban = true
+			r.used -= rn.n.Size()
+			r.mu.Unlock()
+
+			rn.h.Release()
+			rn.h = nil
+			return
+		}
+	}
+	r.mu.Unlock()
+}
+
+func (r *lru) Evict(n *Node) {
+	r.mu.Lock()
+	rn := (*lruNode)(n.CacheData)
+	if rn == nil || rn.ban {
+		r.mu.Unlock()
+		return
+	}
+	n.CacheData = nil
+	r.mu.Unlock()
+
+	rn.h.Release()
+}
+
+func (r *lru) EvictNS(ns uint64) {
+	var evicted []*lruNode
+
+	r.mu.Lock()
+	for e := r.recent.prev; e != &r.recent; {
+		rn := e
+		e = e.prev
+		if rn.n.NS() == ns {
+			rn.remove()
+			rn.n.CacheData = nil
+			r.used -= rn.n.Size()
+			evicted = append(evicted, rn)
+		}
+	}
+	r.mu.Unlock()
+
+	for _, rn := range evicted {
+		rn.h.Release()
+	}
+}
+
+func (r *lru) EvictAll() {
+	r.mu.Lock()
+	back := r.recent.prev
+	for rn := back; rn != &r.recent; rn = rn.prev {
+		rn.n.CacheData = nil
+	}
+	r.reset()
+	r.mu.Unlock()
+
+	for rn := back; rn != &r.recent; rn = rn.prev {
+		rn.h.Release()
+	}
+}
+
+func (r *lru) Close() error {
+	return nil
+}
+
+// NewLRU create a new LRU-cache.
+func NewLRU(capacity int) Cacher {
+	r := &lru{capacity: capacity}
+	r.reset()
+	return r
+}

Godeps/_workspace/src/github.com/syndtr/goleveldb/leveldb/cache/lru_cache.go

@@ -1,622 +0,0 @@
-// Copyright (c) 2012, Suryandaru Triandana <syndtr@gmail.com>
-// All rights reserved.
-//
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-package cache
-
-import (
-	"sync"
-	"sync/atomic"
-
-	"github.com/syndtr/goleveldb/leveldb/util"
-)
-
-// The LLRB implementation were taken from https://github.com/petar/GoLLRB.
-// Which contains the following header:
-//
-// Copyright 2010 Petar Maymounkov. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// lruCache represent a LRU cache state.
-type lruCache struct {
-	mu                sync.Mutex
-	recent            lruNode
-	table             map[uint64]*lruNs
-	capacity          int
-	used, size, alive int
-}
-
-// NewLRUCache creates a new initialized LRU cache with the given capacity.
-func NewLRUCache(capacity int) Cache {
-	c := &lruCache{
-		table:    make(map[uint64]*lruNs),
-		capacity: capacity,
-	}
-	c.recent.rNext = &c.recent
-	c.recent.rPrev = &c.recent
-	return c
-}
-
-func (c *lruCache) Capacity() int {
-	c.mu.Lock()
-	defer c.mu.Unlock()
-	return c.capacity
-}
-
-func (c *lruCache) Used() int {
-	c.mu.Lock()
-	defer c.mu.Unlock()
-	return c.used
-}
-
-func (c *lruCache) Size() int {
-	c.mu.Lock()
-	defer c.mu.Unlock()
-	return c.size
-}
-
-func (c *lruCache) NumObjects() int {
-	c.mu.Lock()
-	defer c.mu.Unlock()
-	return c.alive
-}
-
-// SetCapacity set cache capacity.
-func (c *lruCache) SetCapacity(capacity int) {
-	c.mu.Lock()
-	c.capacity = capacity
-	c.evict()
-	c.mu.Unlock()
-}
-
-// GetNamespace return namespace object for given id.
-func (c *lruCache) GetNamespace(id uint64) Namespace {
-	c.mu.Lock()
-	defer c.mu.Unlock()
-
-	if ns, ok := c.table[id]; ok {
-		return ns
-	}
-
-	ns := &lruNs{lru: c, id: id}
-	c.table[id] = ns
-	return ns
-}
-
-func (c *lruCache) ZapNamespace(id uint64) {
-	c.mu.Lock()
-	if ns, exist := c.table[id]; exist {
-		ns.zapNB()
-		delete(c.table, id)
-	}
-	c.mu.Unlock()
-}
-
-func (c *lruCache) PurgeNamespace(id uint64, fin PurgeFin) {
-	c.mu.Lock()
-	if ns, exist := c.table[id]; exist {
-		ns.purgeNB(fin)
-	}
-	c.mu.Unlock()
-}
-
-// Purge purge entire cache.
-func (c *lruCache) Purge(fin PurgeFin) {
-	c.mu.Lock()
-	for _, ns := range c.table {
-		ns.purgeNB(fin)
-	}
-	c.mu.Unlock()
-}
-
-func (c *lruCache) Zap() {
-	c.mu.Lock()
-	for _, ns := range c.table {
-		ns.zapNB()
-	}
-	c.table = make(map[uint64]*lruNs)
-	c.mu.Unlock()
-}
-
-func (c *lruCache) evict() {
-	top := &c.recent
-	for n := c.recent.rPrev; c.used > c.capacity && n != top; {
-		if n.state != nodeEffective {
-			panic("evicting non effective node")
-		}
-		n.state = nodeEvicted
-		n.rRemove()
-		n.derefNB()
-		c.used -= n.charge
-		n = c.recent.rPrev
-	}
-}
-
-type lruNs struct {
-	lru    *lruCache
-	id     uint64
-	rbRoot *lruNode
-	state  nsState
-}
-
-func (ns *lruNs) rbGetOrCreateNode(h *lruNode, key uint64) (hn, n *lruNode) {
-	if h == nil {
-		n = &lruNode{ns: ns, key: key}
-		return n, n
-	}
-
-	if key < h.key {
-		hn, n = ns.rbGetOrCreateNode(h.rbLeft, key)
-		if hn != nil {
-			h.rbLeft = hn
-		} else {
-			return nil, n
-		}
-	} else if key > h.key {
-		hn, n = ns.rbGetOrCreateNode(h.rbRight, key)
-		if hn != nil {
-			h.rbRight = hn
-		} else {
-			return nil, n
-		}
-	} else {
-		return nil, h
-	}
-
-	if rbIsRed(h.rbRight) && !rbIsRed(h.rbLeft) {
-		h = rbRotLeft(h)
-	}
-	if rbIsRed(h.rbLeft) && rbIsRed(h.rbLeft.rbLeft) {
-		h = rbRotRight(h)
-	}
-	if rbIsRed(h.rbLeft) && rbIsRed(h.rbRight) {
-		rbFlip(h)
-	}
-	return h, n
-}
-
-func (ns *lruNs) getOrCreateNode(key uint64) *lruNode {
-	hn, n := ns.rbGetOrCreateNode(ns.rbRoot, key)
-	if hn != nil {
-		ns.rbRoot = hn
-		ns.rbRoot.rbBlack = true
-	}
-	return n
-}
-
-func (ns *lruNs) rbGetNode(key uint64) *lruNode {
-	h := ns.rbRoot
-	for h != nil {
-		switch {
-		case key < h.key:
-			h = h.rbLeft
-		case key > h.key:
-			h = h.rbRight
-		default:
-			return h
-		}
-	}
-	return nil
-}
-
-func (ns *lruNs) getNode(key uint64) *lruNode {
-	return ns.rbGetNode(key)
-}
-
-func (ns *lruNs) rbDeleteNode(h *lruNode, key uint64) *lruNode {
-	if h == nil {
-		return nil
-	}
-
-	if key < h.key {
-		if h.rbLeft == nil { // key not present. Nothing to delete
-			return h
-		}
-		if !rbIsRed(h.rbLeft) && !rbIsRed(h.rbLeft.rbLeft) {
-			h = rbMoveLeft(h)
-		}
-		h.rbLeft = ns.rbDeleteNode(h.rbLeft, key)
-	} else {
-		if rbIsRed(h.rbLeft) {
-			h = rbRotRight(h)
-		}
-		// If @key equals @h.key and no right children at @h
-		if h.key == key && h.rbRight == nil {
-			return nil
-		}
-		if h.rbRight != nil && !rbIsRed(h.rbRight) && !rbIsRed(h.rbRight.rbLeft) {
-			h = rbMoveRight(h)
-		}
-		// If @key equals @h.key, and (from above) 'h.Right != nil'
-		if h.key == key {
-			var x *lruNode
-			h.rbRight, x = rbDeleteMin(h.rbRight)
-			if x == nil {
-				panic("logic")
-			}
-			x.rbLeft, h.rbLeft = h.rbLeft, nil
-			x.rbRight, h.rbRight = h.rbRight, nil
-			x.rbBlack = h.rbBlack
-			h = x
-		} else { // Else, @key is bigger than @h.key
-			h.rbRight = ns.rbDeleteNode(h.rbRight, key)
-		}
-	}
-
-	return rbFixup(h)
-}
-
-func (ns *lruNs) deleteNode(key uint64) {
-	ns.rbRoot = ns.rbDeleteNode(ns.rbRoot, key)
-	if ns.rbRoot != nil {
-		ns.rbRoot.rbBlack = true
-	}
-}
-
-func (ns *lruNs) rbIterateNodes(h *lruNode, pivot uint64, iter func(n *lruNode) bool) bool {
-	if h == nil {
-		return true
-	}
-	if h.key >= pivot {
-		if !ns.rbIterateNodes(h.rbLeft, pivot, iter) {
-			return false
-		}
-		if !iter(h) {
-			return false
-		}
-	}
-	return ns.rbIterateNodes(h.rbRight, pivot, iter)
-}
-
-func (ns *lruNs) iterateNodes(iter func(n *lruNode) bool) {
-	ns.rbIterateNodes(ns.rbRoot, 0, iter)
-}
-
-func (ns *lruNs) Get(key uint64, setf SetFunc) Handle {
-	ns.lru.mu.Lock()
-	defer ns.lru.mu.Unlock()
-
-	if ns.state != nsEffective {
-		return nil
-	}
-
-	var n *lruNode
-	if setf == nil {
-		n = ns.getNode(key)
-		if n == nil {
-			return nil
-		}
-	} else {
-		n = ns.getOrCreateNode(key)
-	}
-	switch n.state {
-	case nodeZero:
-		charge, value := setf()
-		if value == nil {
-			ns.deleteNode(key)
-			return nil
-		}
-		if charge < 0 {
-			charge = 0
-		}
-
-		n.value = value
-		n.charge = charge
-		n.state = nodeEvicted
-
-		ns.lru.size += charge
-		ns.lru.alive++
-
-		fallthrough
-	case nodeEvicted:
-		if n.charge == 0 {
-			break
-		}
-
-		// Insert to recent list.
-		n.state = nodeEffective
-		n.ref++
-		ns.lru.used += n.charge
-		ns.lru.evict()
-
-		fallthrough
-	case nodeEffective:
-		// Bump to front.
-		n.rRemove()
-		n.rInsert(&ns.lru.recent)
-	case nodeDeleted:
-		// Do nothing.
-	default:
-		panic("invalid state")
-	}
-	n.ref++
-
-	return &lruHandle{node: n}
-}
-
-func (ns *lruNs) Delete(key uint64, fin DelFin) bool {
-	ns.lru.mu.Lock()
-	defer ns.lru.mu.Unlock()
-
-	if ns.state != nsEffective {
-		if fin != nil {
-			fin(false, false)
-		}
-		return false
-	}
-
-	n := ns.getNode(key)
-	if n == nil {
-		if fin != nil {
-			fin(false, false)
-		}
-		return false
-
-	}
-
-	switch n.state {
-	case nodeEffective:
-		ns.lru.used -= n.charge
-		n.state = nodeDeleted
-		n.delfin = fin
-		n.rRemove()
-		n.derefNB()
-	case nodeEvicted:
-		n.state = nodeDeleted
-		n.delfin = fin
-	case nodeDeleted:
-		if fin != nil {
-			fin(true, true)
-		}
-		return false
-	default:
-		panic("invalid state")
-	}
-
-	return true
-}
-
-func (ns *lruNs) purgeNB(fin PurgeFin) {
-	if ns.state == nsEffective {
-		var nodes []*lruNode
-		ns.iterateNodes(func(n *lruNode) bool {
-			nodes = append(nodes, n)
-			return true
-		})
-		for _, n := range nodes {
-			switch n.state {
-			case nodeEffective:
-				ns.lru.used -= n.charge
-				n.state = nodeDeleted
-				n.purgefin = fin
-				n.rRemove()
-				n.derefNB()
-			case nodeEvicted:
-				n.state = nodeDeleted
-				n.purgefin = fin
-			case nodeDeleted:
-			default:
-				panic("invalid state")
-			}
-		}
-	}
-}
-
-func (ns *lruNs) Purge(fin PurgeFin) {
-	ns.lru.mu.Lock()
-	ns.purgeNB(fin)
-	ns.lru.mu.Unlock()
-}
-
-func (ns *lruNs) zapNB() {
-	if ns.state == nsEffective {
-		ns.state = nsZapped
-
-		ns.iterateNodes(func(n *lruNode) bool {
-			if n.state == nodeEffective {
-				ns.lru.used -= n.charge
-				n.rRemove()
-			}
-			ns.lru.size -= n.charge
-			n.state = nodeDeleted
-			n.fin()
-
-			return true
-		})
-		ns.rbRoot = nil
-	}
-}
-
-func (ns *lruNs) Zap() {
-	ns.lru.mu.Lock()
-	ns.zapNB()
-	delete(ns.lru.table, ns.id)
-	ns.lru.mu.Unlock()
-}
-
-type lruNode struct {
-	ns *lruNs
-
-	rNext, rPrev    *lruNode
-	rbLeft, rbRight *lruNode
-	rbBlack         bool
-
-	key      uint64
-	value    interface{}
-	charge   int
-	ref      int
-	state    nodeState
-	delfin   DelFin
-	purgefin PurgeFin
-}
-
-func (n *lruNode) rInsert(at *lruNode) {
-	x := at.rNext
-	at.rNext = n
-	n.rPrev = at
-	n.rNext = x
-	x.rPrev = n
-}
-
-func (n *lruNode) rRemove() bool {
-	if n.rPrev == nil {
-		return false
-	}
-
-	n.rPrev.rNext = n.rNext
-	n.rNext.rPrev = n.rPrev
-	n.rPrev = nil
-	n.rNext = nil
-
-	return true
-}
-
-func (n *lruNode) fin() {
-	if r, ok := n.value.(util.Releaser); ok {
-		r.Release()
-	}
-	if n.purgefin != nil {
-		if n.delfin != nil {
-			panic("conflicting delete and purge fin")
-		}
-		n.purgefin(n.ns.id, n.key)
-		n.purgefin = nil
-	} else if n.delfin != nil {
-		n.delfin(true, false)
-		n.delfin = nil
-	}
-}
-
-func (n *lruNode) derefNB() {
-	n.ref--
-	if n.ref == 0 {
-		if n.ns.state == nsEffective {
-			// Remove elemement.
-			n.ns.deleteNode(n.key)
-			n.ns.lru.size -= n.charge
-			n.ns.lru.alive--
-			n.fin()
-		}
-		n.value = nil
-	} else if n.ref < 0 {
-		panic("leveldb/cache: lruCache: negative node reference")
-	}
-}
-
-func (n *lruNode) deref() {
-	n.ns.lru.mu.Lock()
-	n.derefNB()
-	n.ns.lru.mu.Unlock()
-}
-
-type lruHandle struct {
-	node *lruNode
-	once uint32
-}
-
-func (h *lruHandle) Value() interface{} {
-	if atomic.LoadUint32(&h.once) == 0 {
-		return h.node.value
-	}
-	return nil
-}
-
-func (h *lruHandle) Release() {
-	if !atomic.CompareAndSwapUint32(&h.once, 0, 1) {
-		return
-	}
-	h.node.deref()
-	h.node = nil
-}
-
-func rbIsRed(h *lruNode) bool {
-	if h == nil {
-		return false
-	}
-	return !h.rbBlack
-}
-
-func rbRotLeft(h *lruNode) *lruNode {
-	x := h.rbRight
-	if x.rbBlack {
-		panic("rotating a black link")
-	}
-	h.rbRight = x.rbLeft
-	x.rbLeft = h
-	x.rbBlack = h.rbBlack
-	h.rbBlack = false
-	return x
-}
-
-func rbRotRight(h *lruNode) *lruNode {
-	x := h.rbLeft
-	if x.rbBlack {
-		panic("rotating a black link")
-	}
-	h.rbLeft = x.rbRight
-	x.rbRight = h
-	x.rbBlack = h.rbBlack
-	h.rbBlack = false
-	return x
-}
-
-func rbFlip(h *lruNode) {
-	h.rbBlack = !h.rbBlack
-	h.rbLeft.rbBlack = !h.rbLeft.rbBlack
-	h.rbRight.rbBlack = !h.rbRight.rbBlack
-}
-
-func rbMoveLeft(h *lruNode) *lruNode {
-	rbFlip(h)
-	if rbIsRed(h.rbRight.rbLeft) {
-		h.rbRight = rbRotRight(h.rbRight)
-		h = rbRotLeft(h)
-		rbFlip(h)
-	}
-	return h
-}
-
-func rbMoveRight(h *lruNode) *lruNode {
-	rbFlip(h)
-	if rbIsRed(h.rbLeft.rbLeft) {
-		h = rbRotRight(h)
-		rbFlip(h)
-	}
-	return h
-}
-
-func rbFixup(h *lruNode) *lruNode {
-	if rbIsRed(h.rbRight) {
-		h = rbRotLeft(h)
-	}
-
-	if rbIsRed(h.rbLeft) && rbIsRed(h.rbLeft.rbLeft) {
-		h = rbRotRight(h)
-	}
-
-	if rbIsRed(h.rbLeft) && rbIsRed(h.rbRight) {
-		rbFlip(h)
-	}
-
-	return h
-}
-
-func rbDeleteMin(h *lruNode) (hn, n *lruNode) {
-	if h == nil {
-		return nil, nil
-	}
-	if h.rbLeft == nil {
-		return nil, h
-	}
-
-	if !rbIsRed(h.rbLeft) && !rbIsRed(h.rbLeft.rbLeft) {
-		h = rbMoveLeft(h)
-	}
-
-	h.rbLeft, n = rbDeleteMin(h.rbLeft)
-
-	return rbFixup(h), n
-}

Godeps/_workspace/src/github.com/syndtr/goleveldb/leveldb/corrupt_test.go

@@ -9,14 +9,12 @@ package leveldb
 import (
 	"bytes"
 	"fmt"
-	"io"
-	"math/rand"
-	"testing"
-
-	"github.com/syndtr/goleveldb/leveldb/cache"
 	"github.com/syndtr/goleveldb/leveldb/filter"
 	"github.com/syndtr/goleveldb/leveldb/opt"
 	"github.com/syndtr/goleveldb/leveldb/storage"
+	"io"
+	"math/rand"
+	"testing"
 )
 
 const ctValSize = 1000
@@ -33,8 +31,8 @@ func newDbCorruptHarnessWopt(t *testing.T, o *opt.Options) *dbCorruptHarness {
 
 func newDbCorruptHarness(t *testing.T) *dbCorruptHarness {
 	return newDbCorruptHarnessWopt(t, &opt.Options{
-		BlockCache: cache.NewLRUCache(100),
-		Strict:     opt.StrictJournalChecksum,
+		BlockCacheCapacity: 100,
+		Strict:             opt.StrictJournalChecksum,
 	})
 }
 
@@ -269,9 +267,9 @@ func TestCorruptDB_TableIndex(t *testing.T) {
 func TestCorruptDB_MissingManifest(t *testing.T) {
 	rnd := rand.New(rand.NewSource(0x0badda7a))
 	h := newDbCorruptHarnessWopt(t, &opt.Options{
-		BlockCache:  cache.NewLRUCache(100),
-		Strict:      opt.StrictJournalChecksum,
-		WriteBuffer: 1000 * 60,
+		BlockCacheCapacity: 100,
+		Strict:             opt.StrictJournalChecksum,
+		WriteBuffer:        1000 * 60,
 	})
 
 	h.build(1000)

Godeps/_workspace/src/github.com/syndtr/goleveldb/leveldb/db.go

@@ -823,8 +823,8 @@ func (db *DB) GetProperty(name string) (value string, err error) {
 	case p == "blockpool":
 		value = fmt.Sprintf("%v", db.s.tops.bpool)
 	case p == "cachedblock":
-		if bc := db.s.o.GetBlockCache(); bc != nil {
-			value = fmt.Sprintf("%d", bc.Size())
+		if db.s.tops.bcache != nil {
+			value = fmt.Sprintf("%d", db.s.tops.bcache.Size())
 		} else {
 			value = "<nil>"
 		}

Godeps/_workspace/src/github.com/syndtr/goleveldb/leveldb/db_snapshot.go

@@ -8,6 +8,7 @@ package leveldb
 
 import (
 	"container/list"
+	"fmt"
 	"runtime"
 	"sync"
 	"sync/atomic"
@@ -89,6 +90,10 @@ func (db *DB) newSnapshot() *Snapshot {
 	return snap
 }
 
+func (snap *Snapshot) String() string {
+	return fmt.Sprintf("leveldb.Snapshot{%d}", snap.elem.seq)
+}
+
 // Get gets the value for the given key. It returns ErrNotFound if
 // the DB does not contains the key.
 //

Godeps/_workspace/src/github.com/syndtr/goleveldb/leveldb/db_test.go

@@ -1271,7 +1271,7 @@ func TestDB_DeletionMarkers2(t *testing.T) {
 }
 
 func TestDB_CompactionTableOpenError(t *testing.T) {
-	h := newDbHarnessWopt(t, &opt.Options{CachedOpenFiles: -1})
+	h := newDbHarnessWopt(t, &opt.Options{OpenFilesCacheCapacity: -1})
 	defer h.close()
 
 	im := 10
@@ -1629,8 +1629,8 @@ func TestDB_ManualCompaction(t *testing.T) {
 
 func TestDB_BloomFilter(t *testing.T) {
 	h := newDbHarnessWopt(t, &opt.Options{
-		BlockCache: opt.NoCache,
-		Filter:     filter.NewBloomFilter(10),
+		DisableBlockCache: true,
+		Filter:            filter.NewBloomFilter(10),
 	})
 	defer h.close()
 
@@ -2066,8 +2066,8 @@ func TestDB_GetProperties(t *testing.T) {
 
 func TestDB_GoleveldbIssue72and83(t *testing.T) {
 	h := newDbHarnessWopt(t, &opt.Options{
-		WriteBuffer:     1 * opt.MiB,
-		CachedOpenFiles: 3,
+		WriteBuffer:            1 * opt.MiB,
+		OpenFilesCacheCapacity: 3,
 	})
 	defer h.close()
 
@@ -2200,7 +2200,7 @@ func TestDB_GoleveldbIssue72and83(t *testing.T) {
 func TestDB_TransientError(t *testing.T) {
 	h := newDbHarnessWopt(t, &opt.Options{
 		WriteBuffer:              128 * opt.KiB,
-		CachedOpenFiles:          3,
+		OpenFilesCacheCapacity:   3,
 		DisableCompactionBackoff: true,
 	})
 	defer h.close()
@@ -2410,7 +2410,7 @@ func TestDB_TableCompactionBuilder(t *testing.T) {
 		CompactionTableSize:         43 * opt.KiB,
 		CompactionExpandLimitFactor: 1,
 		CompactionGPOverlapsFactor:  1,
-		BlockCache:                  opt.NoCache,
+		DisableBlockCache:           true,
 	}
 	s, err := newSession(stor, o)
 	if err != nil {

Godeps/_workspace/src/github.com/syndtr/goleveldb/leveldb/db_write.go

@@ -112,9 +112,9 @@ func (db *DB) flush(n int) (mem *memDB, nn int, err error) {
 		db.writeDelay += time.Since(start)
 		db.writeDelayN++
 	} else if db.writeDelayN > 0 {
+		db.logf("db@write was delayed N·%d T·%v", db.writeDelayN, db.writeDelay)
 		db.writeDelay = 0
 		db.writeDelayN = 0
-		db.logf("db@write was delayed N·%d T·%v", db.writeDelayN, db.writeDelay)
 	}
 	return
 }

Godeps/_workspace/src/github.com/syndtr/goleveldb/leveldb/external_test.go

@@ -17,14 +17,14 @@ import (
 var _ = testutil.Defer(func() {
 	Describe("Leveldb external", func() {
 		o := &opt.Options{
-			BlockCache:           opt.NoCache,
-			BlockRestartInterval: 5,
-			BlockSize:            80,
-			Compression:          opt.NoCompression,
-			CachedOpenFiles:      -1,
-			Strict:               opt.StrictAll,
-			WriteBuffer:          1000,
-			CompactionTableSize:  2000,
+			DisableBlockCache:      true,
+			BlockRestartInterval:   5,
+			BlockSize:              80,
+			Compression:            opt.NoCompression,
+			OpenFilesCacheCapacity: -1,
+			Strict:                 opt.StrictAll,
+			WriteBuffer:            1000,
+			CompactionTableSize:    2000,
 		}
 
 		Describe("write test", func() {

Godeps/_workspace/src/github.com/syndtr/goleveldb/leveldb/key.go

@@ -106,7 +106,7 @@ func (ik iKey) assert() {
 		panic("leveldb: nil iKey")
 	}
 	if len(ik) < 8 {
-		panic(fmt.Sprintf("leveldb: iKey %q, len=%d: invalid length", ik, len(ik)))
+		panic(fmt.Sprintf("leveldb: iKey %q, len=%d: invalid length", []byte(ik), len(ik)))
 	}
 }
 
@@ -124,7 +124,7 @@ func (ik iKey) parseNum() (seq uint64, kt kType) {
 	num := ik.num()
 	seq, kt = uint64(num>>8), kType(num&0xff)
 	if kt > ktVal {
-		panic(fmt.Sprintf("leveldb: iKey %q, len=%d: invalid type %#x", ik, len(ik), kt))
+		panic(fmt.Sprintf("leveldb: iKey %q, len=%d: invalid type %#x", []byte(ik), len(ik), kt))
 	}
 	return
 }

Godeps/_workspace/src/github.com/syndtr/goleveldb/leveldb/opt/options.go

@@ -20,8 +20,9 @@ const (
 	GiB = MiB * 1024
 )
 
-const (
-	DefaultBlockCacheSize                = 8 * MiB
+var (
+	DefaultBlockCacher                   = LRUCacher
+	DefaultBlockCacheCapacity            = 8 * MiB
 	DefaultBlockRestartInterval          = 16
 	DefaultBlockSize                     = 4 * KiB
 	DefaultCompactionExpandLimitFactor   = 25
@@ -33,7 +34,8 @@ const (
 	DefaultCompactionTotalSize           = 10 * MiB
 	DefaultCompactionTotalSizeMultiplier = 10.0
 	DefaultCompressionType               = SnappyCompression
-	DefaultCachedOpenFiles               = 500
+	DefaultOpenFilesCacher               = LRUCacher
+	DefaultOpenFilesCacheCapacity        = 500
 	DefaultMaxMemCompationLevel          = 2
 	DefaultNumLevel                      = 7
 	DefaultWriteBuffer                   = 4 * MiB
@@ -41,22 +43,33 @@ const (
 	DefaultWriteL0SlowdownTrigger        = 8
 )
 
-type noCache struct{}
+// Cacher is a caching algorithm.
+type Cacher interface {
+	New(capacity int) cache.Cacher
+}
 
-func (noCache) SetCapacity(capacity int)                     {}
-func (noCache) Capacity() int                                { return 0 }
-func (noCache) Used() int                                    { return 0 }
-func (noCache) Size() int                                    { return 0 }
-func (noCache) NumObjects() int                              { return 0 }
-func (noCache) GetNamespace(id uint64) cache.Namespace       { return nil }
-func (noCache) PurgeNamespace(id uint64, fin cache.PurgeFin) {}
-func (noCache) ZapNamespace(id uint64)                       {}
-func (noCache) Purge(fin cache.PurgeFin)                     {}
-func (noCache) Zap()                                         {}
+type CacherFunc struct {
+	NewFunc func(capacity int) cache.Cacher
+}
 
-var NoCache cache.Cache = noCache{}
+func (f *CacherFunc) New(capacity int) cache.Cacher {
+	if f.NewFunc != nil {
+		return f.NewFunc(capacity)
+	}
+	return nil
+}
 
-// Compression is the per-block compression algorithm to use.
+func noCacher(int) cache.Cacher { return nil }
+
+var (
+	// LRUCacher is the LRU-cache algorithm.
+	LRUCacher = &CacherFunc{cache.NewLRU}
+
+	// NoCacher is the value to disable caching algorithm.
+	NoCacher = &CacherFunc{}
+)
+
+// Compression is the 'sorted table' block compression algorithm to use.
 type Compression uint
 
 func (c Compression) String() string {
@@ -133,16 +146,17 @@ type Options struct {
 	// The default value is nil
 	AltFilters []filter.Filter
 
-	// BlockCache provides per-block caching for LevelDB. Specify NoCache to
-	// disable block caching.
+	// BlockCacher provides cache algorithm for LevelDB 'sorted table' block caching.
+	// Specify NoCacher to disable caching algorithm.
 	//
-	// By default LevelDB will create LRU-cache with capacity of BlockCacheSize.
-	BlockCache cache.Cache
+	// The default value is LRUCacher.
+	BlockCacher Cacher
 
-	// BlockCacheSize defines the capacity of the default 'block cache'.
+	// BlockCacheCapacity defines the capacity of the 'sorted table' block caching.
+	// Use -1 for zero, this has same effect with specifying NoCacher to BlockCacher.
 	//
 	// The default value is 8MiB.
-	BlockCacheSize int
+	BlockCacheCapacity int
 
 	// BlockRestartInterval is the number of keys between restart points for
 	// delta encoding of keys.
@@ -156,13 +170,6 @@ type Options struct {
 	// The default value is 4KiB.
 	BlockSize int
 
-	// CachedOpenFiles defines number of open files to kept around when not
-	// in-use, the counting includes still in-use files.
-	// Set this to negative value to disable caching.
-	//
-	// The default value is 500.
-	CachedOpenFiles int
-
 	// CompactionExpandLimitFactor limits compaction size after expanded.
 	// This will be multiplied by table size limit at compaction target level.
 	//
@@ -237,11 +244,17 @@ type Options struct {
 	// The default value uses the same ordering as bytes.Compare.
 	Comparer comparer.Comparer
 
-	// Compression defines the per-block compression to use.
+	// Compression defines the 'sorted table' block compression to use.
 	//
 	// The default value (DefaultCompression) uses snappy compression.
 	Compression Compression
 
+	// DisableBlockCache allows disable use of cache.Cache functionality on
+	// 'sorted table' block.
+	//
+	// The default value is false.
+	DisableBlockCache bool
+
 	// DisableCompactionBackoff allows disable compaction retry backoff.
 	//
 	// The default value is false.
@@ -288,6 +301,18 @@ type Options struct {
 	// The default is 7.
 	NumLevel int
 
+	// OpenFilesCacher provides cache algorithm for open files caching.
+	// Specify NoCacher to disable caching algorithm.
+	//
+	// The default value is LRUCacher.
+	OpenFilesCacher Cacher
+
+	// OpenFilesCacheCapacity defines the capacity of the open files caching.
+	// Use -1 for zero, this has same effect with specifying NoCacher to OpenFilesCacher.
+	//
+	// The default value is 500.
+	OpenFilesCacheCapacity int
+
 	// Strict defines the DB strict level.
 	Strict Strict
 
@@ -320,18 +345,22 @@ func (o *Options) GetAltFilters() []filter.Filter {
 	return o.AltFilters
 }
 
-func (o *Options) GetBlockCache() cache.Cache {
-	if o == nil {
+func (o *Options) GetBlockCacher() Cacher {
+	if o == nil || o.BlockCacher == nil {
+		return DefaultBlockCacher
+	} else if o.BlockCacher == NoCacher {
 		return nil
 	}
-	return o.BlockCache
+	return o.BlockCacher
 }
 
-func (o *Options) GetBlockCacheSize() int {
-	if o == nil || o.BlockCacheSize <= 0 {
-		return DefaultBlockCacheSize
+func (o *Options) GetBlockCacheCapacity() int {
+	if o == nil || o.BlockCacheCapacity <= 0 {
+		return DefaultBlockCacheCapacity
+	} else if o.BlockCacheCapacity == -1 {
+		return 0
 	}
-	return o.BlockCacheSize
+	return o.BlockCacheCapacity
 }
 
 func (o *Options) GetBlockRestartInterval() int {
@@ -348,15 +377,6 @@ func (o *Options) GetBlockSize() int {
 	return o.BlockSize
 }
 
-func (o *Options) GetCachedOpenFiles() int {
-	if o == nil || o.CachedOpenFiles == 0 {
-		return DefaultCachedOpenFiles
-	} else if o.CachedOpenFiles < 0 {
-		return 0
-	}
-	return o.CachedOpenFiles
-}
-
 func (o *Options) GetCompactionExpandLimit(level int) int {
 	factor := DefaultCompactionExpandLimitFactor
 	if o != nil && o.CompactionExpandLimitFactor > 0 {
@@ -494,6 +514,25 @@ func (o *Options) GetNumLevel() int {
 	return o.NumLevel
 }
 
+func (o *Options) GetOpenFilesCacher() Cacher {
+	if o == nil || o.OpenFilesCacher == nil {
+		return DefaultOpenFilesCacher
+	}
+	if o.OpenFilesCacher == NoCacher {
+		return nil
+	}
+	return o.OpenFilesCacher
+}
+
+func (o *Options) GetOpenFilesCacheCapacity() int {
+	if o == nil || o.OpenFilesCacheCapacity <= 0 {
+		return DefaultOpenFilesCacheCapacity
+	} else if o.OpenFilesCacheCapacity == -1 {
+		return 0
+	}
+	return o.OpenFilesCacheCapacity
+}
+
 func (o *Options) GetStrict(strict Strict) bool {
 	if o == nil || o.Strict == 0 {
 		return DefaultStrict&strict != 0

Godeps/_workspace/src/github.com/syndtr/goleveldb/leveldb/options.go

@@ -7,7 +7,6 @@
 package leveldb
 
 import (
-	"github.com/syndtr/goleveldb/leveldb/cache"
 	"github.com/syndtr/goleveldb/leveldb/filter"
 	"github.com/syndtr/goleveldb/leveldb/opt"
 )
@@ -32,13 +31,6 @@ func (s *session) setOptions(o *opt.Options) {
 			no.AltFilters[i] = &iFilter{filter}
 		}
 	}
-	// Block cache.
-	switch o.GetBlockCache() {
-	case nil:
-		no.BlockCache = cache.NewLRUCache(o.GetBlockCacheSize())
-	case opt.NoCache:
-		no.BlockCache = nil
-	}
 	// Comparer.
 	s.icmp = &iComparer{o.GetComparer()}
 	no.Comparer = s.icmp

Godeps/_workspace/src/github.com/syndtr/goleveldb/leveldb/session.go

@@ -73,7 +73,7 @@ func newSession(stor storage.Storage, o *opt.Options) (s *session, err error) {
 		stCompPtrs: make([]iKey, o.GetNumLevel()),
 	}
 	s.setOptions(o)
-	s.tops = newTableOps(s, s.o.GetCachedOpenFiles())
+	s.tops = newTableOps(s)
 	s.setVersion(newVersion(s))
 	s.log("log@legend F·NumFile S·FileSize N·Entry C·BadEntry B·BadBlock Ke·KeyError D·DroppedEntry L·Level Q·SeqNum T·TimeElapsed")
 	return
@@ -82,9 +82,6 @@ func newSession(stor storage.Storage, o *opt.Options) (s *session, err error) {
 // Close session.
 func (s *session) close() {
 	s.tops.close()
-	if bc := s.o.GetBlockCache(); bc != nil {
-		bc.Purge(nil)
-	}
 	if s.manifest != nil {
 		s.manifest.Close()
 	}

Godeps/_workspace/src/github.com/syndtr/goleveldb/leveldb/storage/file_storage.go

@@ -221,7 +221,7 @@ func (fs *fileStorage) GetManifest() (f File, err error) {
 					fs.log(fmt.Sprintf("skipping %s: invalid file name", fn))
 					continue
 				}
-				if _, e1 := strconv.ParseUint(fn[7:], 10, 0); e1 != nil {
+				if _, e1 := strconv.ParseUint(fn[8:], 10, 0); e1 != nil {
 					fs.log(fmt.Sprintf("skipping %s: invalid file num: %v", fn, e1))
 					continue
 				}

Godeps/_workspace/src/github.com/syndtr/goleveldb/leveldb/table.go

@@ -286,10 +286,10 @@ func (x *tFilesSortByNum) Less(i, j int) bool {
 
 // Table operations.
 type tOps struct {
-	s       *session
-	cache   cache.Cache
-	cacheNS cache.Namespace
-	bpool   *util.BufferPool
+	s      *session
+	cache  *cache.Cache
+	bcache *cache.Cache
+	bpool  *util.BufferPool
 }
 
 // Creates an empty table and returns table writer.
@@ -338,26 +338,28 @@ func (t *tOps) createFrom(src iterator.Iterator) (f *tFile, n int, err error) {
 
 // Opens table. It returns a cache handle, which should
 // be released after use.
-func (t *tOps) open(f *tFile) (ch cache.Handle, err error) {
+func (t *tOps) open(f *tFile) (ch *cache.Handle, err error) {
 	num := f.file.Num()
-	ch = t.cacheNS.Get(num, func() (charge int, value interface{}) {
+	ch = t.cache.Get(0, num, func() (size int, value cache.Value) {
 		var r storage.Reader
 		r, err = f.file.Open()
 		if err != nil {
 			return 0, nil
 		}
 
-		var bcacheNS cache.Namespace
-		if bc := t.s.o.GetBlockCache(); bc != nil {
-			bcacheNS = bc.GetNamespace(num)
+		var bcache *cache.CacheGetter
+		if t.bcache != nil {
+			bcache = &cache.CacheGetter{Cache: t.bcache, NS: num}
 		}
+
 		var tr *table.Reader
-		tr, err = table.NewReader(r, int64(f.size), storage.NewFileInfo(f.file), bcacheNS, t.bpool, t.s.o.Options)
+		tr, err = table.NewReader(r, int64(f.size), storage.NewFileInfo(f.file), bcache, t.bpool, t.s.o.Options)
 		if err != nil {
 			r.Close()
 			return 0, nil
 		}
 		return 1, tr
+
 	})
 	if ch == nil && err == nil {
 		err = ErrClosed
@@ -412,16 +414,14 @@ func (t *tOps) newIterator(f *tFile, slice *util.Range, ro *opt.ReadOptions) ite
 // no one use the the table.
 func (t *tOps) remove(f *tFile) {
 	num := f.file.Num()
-	t.cacheNS.Delete(num, func(exist, pending bool) {
-		if !pending {
-			if err := f.file.Remove(); err != nil {
-				t.s.logf("table@remove removing @%d %q", num, err)
-			} else {
-				t.s.logf("table@remove removed @%d", num)
-			}
-			if bc := t.s.o.GetBlockCache(); bc != nil {
-				bc.ZapNamespace(num)
-			}
+	t.cache.Delete(0, num, func() {
+		if err := f.file.Remove(); err != nil {
+			t.s.logf("table@remove removing @%d %q", num, err)
+		} else {
+			t.s.logf("table@remove removed @%d", num)
+		}
+		if t.bcache != nil {
+			t.bcache.EvictNS(num)
 		}
 	})
 }
@@ -429,18 +429,34 @@ func (t *tOps) remove(f *tFile) {
 // Closes the table ops instance. It will close all tables,
 // regadless still used or not.
 func (t *tOps) close() {
-	t.cache.Zap()
 	t.bpool.Close()
+	t.cache.Close()
+	if t.bcache != nil {
+		t.bcache.Close()
+	}
 }
 
 // Creates new initialized table ops instance.
-func newTableOps(s *session, cacheCap int) *tOps {
-	c := cache.NewLRUCache(cacheCap)
+func newTableOps(s *session) *tOps {
+	var (
+		cacher cache.Cacher
+		bcache *cache.Cache
+	)
+	if s.o.GetOpenFilesCacheCapacity() > 0 {
+		cacher = cache.NewLRU(s.o.GetOpenFilesCacheCapacity())
+	}
+	if !s.o.DisableBlockCache {
+		var bcacher cache.Cacher
+		if s.o.GetBlockCacheCapacity() > 0 {
+			bcacher = cache.NewLRU(s.o.GetBlockCacheCapacity())
+		}
+		bcache = cache.NewCache(bcacher)
+	}
 	return &tOps{
-		s:       s,
-		cache:   c,
-		cacheNS: c.GetNamespace(0),
-		bpool:   util.NewBufferPool(s.o.GetBlockSize() + 5),
+		s:      s,
+		cache:  cache.NewCache(cacher),
+		bcache: bcache,
+		bpool:  util.NewBufferPool(s.o.GetBlockSize() + 5),
 	}
 }
 

Godeps/_workspace/src/github.com/syndtr/goleveldb/leveldb/table/reader.go

@@ -509,7 +509,7 @@ type Reader struct {
 	mu     sync.RWMutex
 	fi     *storage.FileInfo
 	reader io.ReaderAt
-	cache  cache.Namespace
+	cache  *cache.CacheGetter
 	err    error
 	bpool  *util.BufferPool
 	// Options
@@ -613,18 +613,22 @@ func (r *Reader) readBlock(bh blockHandle, verifyChecksum bool) (*block, error)
 
 func (r *Reader) readBlockCached(bh blockHandle, verifyChecksum, fillCache bool) (*block, util.Releaser, error) {
 	if r.cache != nil {
-		var err error
-		ch := r.cache.Get(bh.offset, func() (charge int, value interface{}) {
-			if !fillCache {
-				return 0, nil
-			}
-			var b *block
-			b, err = r.readBlock(bh, verifyChecksum)
-			if err != nil {
-				return 0, nil
-			}
-			return cap(b.data), b
-		})
+		var (
+			err error
+			ch  *cache.Handle
+		)
+		if fillCache {
+			ch = r.cache.Get(bh.offset, func() (size int, value cache.Value) {
+				var b *block
+				b, err = r.readBlock(bh, verifyChecksum)
+				if err != nil {
+					return 0, nil
+				}
+				return cap(b.data), b
+			})
+		} else {
+			ch = r.cache.Get(bh.offset, nil)
+		}
 		if ch != nil {
 			b, ok := ch.Value().(*block)
 			if !ok {
@@ -667,18 +671,22 @@ func (r *Reader) readFilterBlock(bh blockHandle) (*filterBlock, error) {
 
 func (r *Reader) readFilterBlockCached(bh blockHandle, fillCache bool) (*filterBlock, util.Releaser, error) {
 	if r.cache != nil {
-		var err error
-		ch := r.cache.Get(bh.offset, func() (charge int, value interface{}) {
-			if !fillCache {
-				return 0, nil
-			}
-			var b *filterBlock
-			b, err = r.readFilterBlock(bh)
-			if err != nil {
-				return 0, nil
-			}
-			return cap(b.data), b
-		})
+		var (
+			err error
+			ch  *cache.Handle
+		)
+		if fillCache {
+			ch = r.cache.Get(bh.offset, func() (size int, value cache.Value) {
+				var b *filterBlock
+				b, err = r.readFilterBlock(bh)
+				if err != nil {
+					return 0, nil
+				}
+				return cap(b.data), b
+			})
+		} else {
+			ch = r.cache.Get(bh.offset, nil)
+		}
 		if ch != nil {
 			b, ok := ch.Value().(*filterBlock)
 			if !ok {
@@ -980,7 +988,7 @@ func (r *Reader) Release() {
 // The fi, cache and bpool is optional and can be nil.
 //
 // The returned table reader instance is goroutine-safe.
-func NewReader(f io.ReaderAt, size int64, fi *storage.FileInfo, cache cache.Namespace, bpool *util.BufferPool, o *opt.Options) (*Reader, error) {
+func NewReader(f io.ReaderAt, size int64, fi *storage.FileInfo, cache *cache.CacheGetter, bpool *util.BufferPool, o *opt.Options) (*Reader, error) {
 	if f == nil {
 		return nil, errors.New("leveldb/table: nil file")
 	}

Godeps/_workspace/src/golang.org/x/text/transform/transform_test.go

@@ -16,7 +16,7 @@ import (
 	"unicode/utf8"
 )
 
-type lowerCaseASCII struct{ transform.NopResetter }
+type lowerCaseASCII struct{ NopResetter }
 
 func (lowerCaseASCII) Transform(dst, src []byte, atEOF bool) (nDst, nSrc int, err error) {
 	n := len(src)
@@ -34,7 +34,7 @@ func (lowerCaseASCII) Transform(dst, src []byte, atEOF bool) (nDst, nSrc int, er
 
 var errYouMentionedX = errors.New("you mentioned X")
 
-type dontMentionX struct{ transform.NopResetter }
+type dontMentionX struct{ NopResetter }
 
 func (dontMentionX) Transform(dst, src []byte, atEOF bool) (nDst, nSrc int, err error) {
 	n := len(src)
@@ -52,7 +52,7 @@ func (dontMentionX) Transform(dst, src []byte, atEOF bool) (nDst, nSrc int, err
 
 // doublerAtEOF is a strange Transformer that transforms "this" to "tthhiiss",
 // but only if atEOF is true.
-type doublerAtEOF struct{ transform.NopResetter }
+type doublerAtEOF struct{ NopResetter }
 
 func (doublerAtEOF) Transform(dst, src []byte, atEOF bool) (nDst, nSrc int, err error) {
 	if !atEOF {
@@ -71,7 +71,7 @@ func (doublerAtEOF) Transform(dst, src []byte, atEOF bool) (nDst, nSrc int, err
 // rleDecode and rleEncode implement a toy run-length encoding: "aabbbbbbbbbb"
 // is encoded as "2a10b". The decoding is assumed to not contain any numbers.
 
-type rleDecode struct{ transform.NopResetter }
+type rleDecode struct{ NopResetter }
 
 func (rleDecode) Transform(dst, src []byte, atEOF bool) (nDst, nSrc int, err error) {
 loop:
@@ -104,7 +104,7 @@ loop:
 }
 
 type rleEncode struct {
-	transform.NopResetter
+	NopResetter
 
 	// allowStutter means that "xxxxxxxx" can be encoded as "5x3x"
 	// instead of always as "8x".

NICKS

@@ -1,6 +1,7 @@
 # This file maps email addresses used in commits to nicks used the changelog.
 
 AudriusButkevicius	<audrius.butkevicius@gmail.com>
+Cathryne	<cathryne.linenweaver@gmail.com> <Cathryne@users.noreply.github.com>
 KayoticSully	<kayoticsully@gmail.com>
 Nutomic		<me@nutomic.com>
 Vilbrekin	<vilbrekin@gmail.com>
@@ -9,6 +10,7 @@ alex2108	<register-github@alex-graf.de>
 andrew-d	<andrew@du.nham.ca>
 asdil12		<dominik@heidler.eu>
 bigbear2nd	<bigbear2nd@gmail.com>
+brendanlong	<self@brendanlong.com>
 bsidhom		<bsidhom@gmail.com>
 calmh		<jakob@nym.se>
 cdata		<chris@scriptolo.gy>
@@ -22,6 +24,7 @@ jpjp		<jamespatterson@operamail.com> <jpjp@users.noreply.github.com>
 kozec		<kozec@kozec.com>
 marcindziadus	<dziadus.marcin@gmail.com>
 mvdan		<mvdan@mvdan.cc>
+peterhoeg	<peter@speartail.com>
 philips		<brandon@ifup.org>
 piobpl		<piotrb10@gmail.com>
 pluby		<phill.luby@newredo.com>

README.md

@@ -11,7 +11,7 @@ This is the `syncthing` project. The following are the project goals:
     collaborating devices. The protocol should be well defined, unambiguous,
     easily understood, free to use, efficient, secure and language neutral.
     This is the [Block Exchange
-    Protocol](https://github.com/syncthing/syncthing/blob/master/protocol/PROTOCOL.md).
+    Protocol](https://github.com/syncthing/protocol/blob/master/BEPv1.md).
 
  2. Provide the reference implementation to demonstrate the usability of
     said protocol. This is the `syncthing` utility. It is the hope that
@@ -25,7 +25,8 @@ for incompatible changes.
 Getting Started
 ---------------
 
-Take a look at the [getting started guide](http://discourse.syncthing.net/t/46).
+Take a look at the [getting started
+guide](https://github.com/syncthing/syncthing/wiki/Getting-Started).
 
 There are a few examples for keeping syncthing running in the background
 on your system in [the etc directory](https://github.com/syncthing/syncthing/blob/master/etc).
@@ -37,30 +38,23 @@ Building
 --------
 
 Building Syncthing from source is easy, and there's a
-[guide](http://discourse.syncthing.net/t/44)
+[guide](https://github.com/syncthing/syncthing/wiki/Building).
 that describes it for both Unix and Windows.
 
 Signed Releases
 ---------------
 
-As of v0.7.0 and onwards, git tags and release binaries are GPG signed with
-the key BCE524C7 (http://nym.se/gpg.txt). For release binaries, MD5 and
-SHA1 checksums are calculated and signed, available in the
-md5sum.txt.asc and sha1sum.txt.asc files.
+As of v0.10.15 and onwards, git tags and release binaries are GPG signed
+with the key D26E6ED000654A3E (see http://syncthing.net/security.html).
+For release binaries, MD5 and SHA1 checksums are calculated and signed,
+available in the md5sum.txt.asc and sha1sum.txt.asc files.
 
 Documentation
 =============
 
 The [syncthing
-documentation](http://discourse.syncthing.net/category/documentation) is
-on the discourse site.
-
-License
-=======
-
-All documentation and protocol specifications are licensed
-under the [Creative Commons Attribution 4.0 International
-License](http://creativecommons.org/licenses/by/4.0/).
+documentation](https://github.com/syncthing/syncthing/wiki/) is on the
+Github wiki.
 
 All code is licensed under the
 [GPL](https://github.com/syncthing/syncthing/blob/master/LICENSE), v3 or

build.go

@@ -22,6 +22,7 @@ import (
 	"archive/zip"
 	"bytes"
 	"compress/gzip"
+	"crypto/md5"
 	"flag"
 	"fmt"
 	"io"
@@ -190,7 +191,12 @@ func install(pkg string, tags []string) {
 }
 
 func build(pkg string, tags []string) {
-	rmr("syncthing", "syncthing.exe")
+	binary := "syncthing"
+	if goos == "windows" {
+		binary += ".exe"
+	}
+
+	rmr(binary, binary+".md5")
 	args := []string{"build", "-ldflags", ldflags()}
 	if len(tags) > 0 {
 		args = append(args, "-tags", strings.Join(tags, ","))
@@ -201,6 +207,13 @@ func build(pkg string, tags []string) {
 	args = append(args, pkg)
 	setBuildEnv()
 	runPrint("go", args...)
+
+	// Create an md5 checksum of the binary, to be included in the archive for
+	// automatic upgrades.
+	err := md5File(binary)
+	if err != nil {
+		log.Fatal(err)
+	}
 }
 
 func buildTar() {
@@ -217,6 +230,7 @@ func buildTar() {
 		{"LICENSE", name + "/LICENSE.txt"},
 		{"AUTHORS", name + "/AUTHORS.txt"},
 		{"syncthing", name + "/syncthing"},
+		{"syncthing.md5", name + "/syncthing.md5"},
 	}
 	for _, file := range listFiles("etc") {
 		files = append(files, archiveFile{file, name + "/" + file})
@@ -239,6 +253,7 @@ func buildZip() {
 		{"LICENSE", name + "/LICENSE.txt"},
 		{"AUTHORS", name + "/AUTHORS.txt"},
 		{"syncthing.exe", name + "/syncthing.exe"},
+		{"syncthing.exe.md5", name + "/syncthing.exe.md5"},
 	}
 	zipFile(filename, files)
 	log.Println(filename)
@@ -554,3 +569,29 @@ func zipFile(out string, files []archiveFile) {
 		log.Fatal(err)
 	}
 }
+
+func md5File(file string) error {
+	fd, err := os.Open(file)
+	if err != nil {
+		return err
+	}
+	defer fd.Close()
+
+	h := md5.New()
+	_, err = io.Copy(h, fd)
+	if err != nil {
+		return err
+	}
+
+	out, err := os.Create(file + ".md5")
+	if err != nil {
+		return err
+	}
+
+	_, err = fmt.Fprintf(out, "%x\n", h.Sum(nil))
+	if err != nil {
+		return err
+	}
+
+	return out.Close()
+}

build.sh

@@ -105,7 +105,7 @@ case "${1:-default}" in
 		;;
 
 	docker-init)
-		docker build -q -t syncthing/build:$DOCKERIMGV docker >/dev/null
+		docker build -q -t syncthing/build:$DOCKERIMGV docker
 		;;
 
 	docker-all)
@@ -122,17 +122,15 @@ case "${1:-default}" in
 
 	docker-test)
 		docker run --rm -h syncthing-builder -u $(id -u) -t \
-			-v $(pwd):/tmp/syncthing \
+			-v $(pwd):/go/src/github.com/syncthing/syncthing \
+			-w /go/src/github.com/syncthing/syncthing \
 			syncthing/build:$DOCKERIMGV \
-			sh -euxc 'mkdir -p /go/src/github.com/syncthing \
-				&& cd /go/src/github.com/syncthing \
-				&& cp -r /tmp/syncthing syncthing \
-				&& cd syncthing \
-				&& ./build.sh clean \
+			sh -euxc './build.sh clean \
 				&& go run build.go -race \
 				&& export GOPATH=$(pwd)/Godeps/_workspace:$GOPATH \
 				&& cd test \
-				&& go test -tags integration -v -timeout 60m -short'
+				&& go test -tags integration -v -timeout 60m -short \
+				&& git clean -fxd .'
 		;;
 
 	*)

check-contrib.sh

@@ -15,7 +15,8 @@ no-docs-typos() {
 	grep -v f0621207e3953711f9ab86d99724f1d0faac45b1 |\
 	grep -v f1120d7aa936c0658429edef0037792520b46334 |\
 	grep -v a9339d0627fff439879d157c75077f02c9fac61b |\
-	grep -v 254c63763a3ad42fd82259f1767db526cff94a14
+	grep -v 254c63763a3ad42fd82259f1767db526cff94a14 |\
+	grep -v 4b76ec40c07078beaa2c5e250ed7d9bd6276a718
 }
 
 print-missing-authors() {

cmd/stcompdirs/main.go

@@ -0,0 +1,177 @@
+// Copyright (C) 2014 The Syncthing Authors.
+//
+// This program is free software: you can redistribute it and/or modify it
+// under the terms of the GNU General Public License as published by the Free
+// Software Foundation, either version 3 of the License, or (at your option)
+// any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT
+// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along
+// with this program. If not, see <http://www.gnu.org/licenses/>.
+
+package main
+
+import (
+	"crypto/md5"
+	"errors"
+	"flag"
+	"fmt"
+	"io"
+	"log"
+	"os"
+	"path/filepath"
+
+	"github.com/syncthing/syncthing/internal/symlinks"
+)
+
+func main() {
+	flag.Parse()
+	log.Println(compareDirectories(flag.Args()...))
+}
+
+// Compare a number of directories. Returns nil if the contents are identical,
+// otherwise an error describing the first found difference.
+func compareDirectories(dirs ...string) error {
+	chans := make([]chan fileInfo, len(dirs))
+	for i := range chans {
+		chans[i] = make(chan fileInfo)
+	}
+	errcs := make([]chan error, len(dirs))
+	abort := make(chan struct{})
+
+	for i := range dirs {
+		errcs[i] = startWalker(dirs[i], chans[i], abort)
+	}
+
+	res := make([]fileInfo, len(dirs))
+	for {
+		numDone := 0
+		for i := range chans {
+			fi, ok := <-chans[i]
+			if !ok {
+				err, hasError := <-errcs[i]
+				if hasError {
+					close(abort)
+					return err
+				}
+				numDone++
+			}
+			res[i] = fi
+		}
+
+		for i := 1; i < len(res); i++ {
+			if res[i] != res[0] {
+				close(abort)
+				if res[i].name < res[0].name {
+					return fmt.Errorf("%s missing %v (present in %s)", dirs[0], res[i], dirs[i])
+				} else if res[i].name > res[0].name {
+					return fmt.Errorf("%s missing %v (present in %s)", dirs[i], res[0], dirs[0])
+				}
+				return fmt.Errorf("Mismatch; %v (%s) != %v (%s)", res[i], dirs[i], res[0], dirs[0])
+			}
+		}
+
+		if numDone == len(dirs) {
+			return nil
+		}
+	}
+}
+
+type fileInfo struct {
+	name string
+	mode os.FileMode
+	mod  int64
+	hash [16]byte
+}
+
+func (f fileInfo) String() string {
+	return fmt.Sprintf("%s %04o %d %x", f.name, f.mode, f.mod, f.hash)
+}
+
+func startWalker(dir string, res chan<- fileInfo, abort <-chan struct{}) chan error {
+	walker := func(path string, info os.FileInfo, err error) error {
+		if err != nil {
+			return err
+		}
+
+		rn, _ := filepath.Rel(dir, path)
+		if rn == "." || rn == ".stfolder" {
+			return nil
+		}
+		if rn == ".stversions" {
+			return filepath.SkipDir
+		}
+
+		var f fileInfo
+		if info.Mode()&os.ModeSymlink != 0 {
+			f = fileInfo{
+				name: rn,
+				mode: os.ModeSymlink,
+			}
+
+			tgt, _, err := symlinks.Read(path)
+			if err != nil {
+				return err
+			}
+			h := md5.New()
+			h.Write([]byte(tgt))
+			hash := h.Sum(nil)
+
+			copy(f.hash[:], hash)
+		} else if info.IsDir() {
+			f = fileInfo{
+				name: rn,
+				mode: info.Mode(),
+				// hash and modtime zero for directories
+			}
+		} else {
+			f = fileInfo{
+				name: rn,
+				mode: info.Mode(),
+				mod:  info.ModTime().Unix(),
+			}
+			sum, err := md5file(path)
+			if err != nil {
+				return err
+			}
+			f.hash = sum
+		}
+
+		select {
+		case res <- f:
+			return nil
+		case <-abort:
+			return errors.New("abort")
+		}
+	}
+
+	errc := make(chan error)
+	go func() {
+		err := filepath.Walk(dir, walker)
+		close(res)
+		if err != nil {
+			errc <- err
+		}
+		close(errc)
+	}()
+	return errc
+}
+
+func md5file(fname string) (hash [16]byte, err error) {
+	f, err := os.Open(fname)
+	if err != nil {
+		return
+	}
+	defer f.Close()
+
+	h := md5.New()
+	io.Copy(h, f)
+	hb := h.Sum(nil)
+	copy(hash[:], hb)
+
+	return
+}

cmd/syncthing/gui.go

@@ -149,6 +149,7 @@ func startGUI(cfg config.GUIConfiguration, assetDir string, m *model.Model) erro
 	postRestMux.HandleFunc("/rest/shutdown", restPostShutdown)
 	postRestMux.HandleFunc("/rest/upgrade", restPostUpgrade)
 	postRestMux.HandleFunc("/rest/scan", withModel(m, restPostScan))
+	postRestMux.HandleFunc("/rest/bump", withModel(m, restPostBump))
 
 	// A handler that splits requests between the two above and disables
 	// caching
@@ -314,19 +315,12 @@ func restGetNeed(m *model.Model, w http.ResponseWriter, r *http.Request) {
 	var qs = r.URL.Query()
 	var folder = qs.Get("folder")
 
-	files := m.NeedFolderFilesLimited(folder, 100) // max 100 files
+	progress, queued, rest := m.NeedFolderFiles(folder, 100)
 	// Convert the struct to a more loose structure, and inject the size.
-	output := make([]map[string]interface{}, 0, len(files))
-	for _, file := range files {
-		output = append(output, map[string]interface{}{
-			"Name":         file.Name,
-			"Flags":        file.Flags,
-			"Modified":     file.Modified,
-			"Version":      file.Version,
-			"LocalVersion": file.LocalVersion,
-			"NumBlocks":    file.NumBlocks,
-			"Size":         protocol.BlocksToSize(file.NumBlocks),
-		})
+	output := map[string][]map[string]interface{}{
+		"progress": toNeedSlice(progress),
+		"queued":   toNeedSlice(queued),
+		"rest":     toNeedSlice(rest),
 	}
 
 	w.Header().Set("Content-Type", "application/json; charset=utf-8")
@@ -577,6 +571,10 @@ func restGetEvents(w http.ResponseWriter, r *http.Request) {
 }
 
 func restGetUpgrade(w http.ResponseWriter, r *http.Request) {
+	if noUpgrade {
+		http.Error(w, upgrade.ErrUpgradeUnsupported.Error(), 500)
+		return
+	}
 	rel, err := upgrade.LatestRelease(strings.Contains(Version, "-beta"))
 	if err != nil {
 		http.Error(w, err.Error(), 500)
@@ -650,6 +648,14 @@ func restPostScan(m *model.Model, w http.ResponseWriter, r *http.Request) {
 	}
 }
 
+func restPostBump(m *model.Model, w http.ResponseWriter, r *http.Request) {
+	qs := r.URL.Query()
+	folder := qs.Get("folder")
+	file := qs.Get("file")
+	m.BringToFront(folder, file)
+	restGetNeed(m, w, r)
+}
+
 func getQR(w http.ResponseWriter, r *http.Request) {
 	var qs = r.URL.Query()
 	var text = qs.Get("text")
@@ -775,3 +781,19 @@ func mimeTypeForFile(file string) string {
 		return mime.TypeByExtension(ext)
 	}
 }
+
+func toNeedSlice(files []protocol.FileInfoTruncated) []map[string]interface{} {
+	output := make([]map[string]interface{}, len(files))
+	for i, file := range files {
+		output[i] = map[string]interface{}{
+			"Name":         file.Name,
+			"Flags":        file.Flags,
+			"Modified":     file.Modified,
+			"Version":      file.Version,
+			"LocalVersion": file.LocalVersion,
+			"NumBlocks":    file.NumBlocks,
+			"Size":         protocol.BlocksToSize(file.NumBlocks),
+		}
+	}
+	return output
+}

cmd/syncthing/main.go

@@ -182,6 +182,7 @@ var (
 	showVersion       bool
 	doUpgrade         bool
 	doUpgradeCheck    bool
+	upgradeTo         string
 	noBrowser         bool
 	noConsole         bool
 	generateDir       string
@@ -227,6 +228,7 @@ func main() {
 	flag.BoolVar(&doUpgrade, "upgrade", false, "Perform upgrade")
 	flag.BoolVar(&doUpgradeCheck, "upgrade-check", false, "Check for available upgrade")
 	flag.BoolVar(&showVersion, "version", false, "Show version")
+	flag.StringVar(&upgradeTo, "upgrade-to", upgradeTo, "Force upgrade directly from specified URL")
 
 	flag.Usage = usageFor(flag.CommandLine, usage, fmt.Sprintf(extraUsage, defConfDir))
 	flag.Parse()
@@ -315,6 +317,15 @@ func main() {
 	// Ensure that our home directory exists.
 	ensureDir(confDir, 0700)
 
+	if upgradeTo != "" {
+		err := upgrade.ToURL(upgradeTo)
+		if err != nil {
+			l.Fatalln("Upgrade:", err) // exits 1
+		}
+		l.Okln("Upgraded from", upgradeTo)
+		return
+	}
+
 	if doUpgrade || doUpgradeCheck {
 		rel, err := upgrade.LatestRelease(IsBeta)
 		if err != nil {
@@ -330,7 +341,7 @@ func main() {
 
 		if doUpgrade {
 			// Use leveldb database locks to protect against concurrent upgrades
-			_, err = leveldb.OpenFile(filepath.Join(confDir, "index"), &opt.Options{CachedOpenFiles: 100})
+			_, err = leveldb.OpenFile(filepath.Join(confDir, "index"), &opt.Options{OpenFilesCacheCapacity: 100})
 			if err != nil {
 				l.Fatalln("Cannot upgrade, database seems to be locked. Is another copy of Syncthing already running?")
 			}
@@ -478,7 +489,7 @@ func syncthingMain() {
 		readRateLimit = ratelimit.NewBucketWithRate(float64(1000*opts.MaxRecvKbps), int64(5*1000*opts.MaxRecvKbps))
 	}
 
-	db, err := leveldb.OpenFile(filepath.Join(confDir, "index"), &opt.Options{CachedOpenFiles: 100})
+	db, err := leveldb.OpenFile(filepath.Join(confDir, "index"), &opt.Options{OpenFilesCacheCapacity: 100})
 	if err != nil {
 		l.Fatalln("Cannot open database:", err, "- Is another copy of Syncthing already running?")
 	}
@@ -784,7 +795,7 @@ func setupExternalPort(igd *upnp.IGD, port int) int {
 
 	for i := 0; i < 10; i++ {
 		r := 1024 + predictableRandom.Intn(65535-1024)
-		err := igd.AddPortMapping(upnp.TCP, r, port, "syncthing", cfg.Options().UPnPLease*60)
+		err := igd.AddPortMapping(upnp.TCP, r, port, fmt.Sprintf("syncthing-%d", r), cfg.Options().UPnPLease*60)
 		if err == nil {
 			return r
 		}
@@ -964,11 +975,16 @@ next:
 			}
 		}
 
-		events.Default.Log(events.DeviceRejected, map[string]string{
-			"device":  remoteID.String(),
-			"address": conn.RemoteAddr().String(),
-		})
-		l.Infof("Connection from %s with unknown device ID %s; ignoring", conn.RemoteAddr(), remoteID)
+		if !cfg.IgnoredDevice(remoteID) {
+			events.Default.Log(events.DeviceRejected, map[string]string{
+				"device":  remoteID.String(),
+				"address": conn.RemoteAddr().String(),
+			})
+			l.Infof("Connection from %s with unknown device ID %s", conn.RemoteAddr(), remoteID)
+		} else {
+			l.Infof("Connection from %s with ignored device ID %s", conn.RemoteAddr(), remoteID)
+		}
+
 		conn.Close()
 	}
 }
@@ -1263,7 +1279,8 @@ func autoUpgrade() {
 			continue
 		}
 
-		if upgrade.CompareVersions(rel.Tag, Version) <= 0 {
+		if upgrade.CompareVersions(rel.Tag, Version) != upgrade.Newer {
+			// Skip equal, older or majorly newer (incompatible) versions
 			continue
 		}
 

cmd/syncthing/random_test.go

@@ -15,14 +15,21 @@
 
 package main
 
-import "testing"
+import (
+	"sync"
+	"testing"
+)
+
+var predictableRandomTest sync.Once
 
 func TestPredictableRandom(t *testing.T) {
-	// predictable random sequence is predictable
-	e := 3440579354231278675
-	if v := predictableRandom.Int(); v != e {
-		t.Errorf("Unexpected random value %d != %d", v, e)
-	}
+	predictableRandomTest.Do(func() {
+		// predictable random sequence is predictable
+		e := 3440579354231278675
+		if v := predictableRandom.Int(); v != e {
+			t.Errorf("Unexpected random value %d != %d", v, e)
+		}
+	})
 }
 
 func TestSeedFromBytes(t *testing.T) {

etc/linux-systemd/README.md

@@ -0,0 +1,27 @@
+This directory contains a configuration for running syncthing under the
+"systemd" service manager on Linux both under either a systemd system service or
+systemd user service.
+
+ 1. Install systemd.
+
+ 2. If you are running this as a system level service:
+
+   1. Create the user you will be running the service as (foo in this example).
+
+   2. Copy the syncthing@.service files to /etc/systemd/system
+
+   3. Enable and start the service
+      systemctl enable syncthing@foo.service
+      systemctl start syncthing@foo.service
+
+ 3. If you are running this as a user level service:
+
+   1. Log in as the user you will be running the service as
+
+   2. Copy the syncthing.service files to /etc/systemd/user
+
+   3. Enable and start the service
+      systemctl --user enable syncthing.service
+      systemctl --user start syncthing.service
+
+Log output is sent to the journal.

etc/linux-systemd/system/syncthing@.service

@@ -0,0 +1,14 @@
+[Unit]
+Description=Syncthing service for %i
+After=network.target
+
+[Service]
+User=%i
+Environment=STARGS=
+EnvironmentFile=-/etc/default/syncthing
+Environment=STNORESTART=yes
+ExecStart=/usr/bin/syncthing ${STARGS}
+Restart=on-failure
+
+[Install]
+WantedBy=multi-user.target

etc/linux-systemd/user/syncthing.service

@@ -0,0 +1,12 @@
+[Unit]
+Description=Syncthing service
+
+[Service]
+Environment=STARGS=
+EnvironmentFile=-%h/.config/syncthing/environment
+Environment=STNORESTART=yes
+ExecStart=/usr/bin/syncthing ${STARGS}
+Restart=on-failure
+
+[Install]
+WantedBy=cmdline.target

gui/assets/lang/lang-be.json

@@ -1,8 +1,10 @@
 {
     "API Key": "Ключ API",
     "About": "Аб праграме",
+    "Add": "Add",
     "Add Device": "Дадаць прыладу",
     "Add Folder": "Дадаць каталёг",
+    "Add new folder?": "Add new folder?",
     "Address": "Адрас",
     "Addresses": "Адрасы",
     "Allow Anonymous Usage Reporting?": "Allow Anonymous Usage Reporting?",
@@ -15,14 +17,19 @@
     "Comment, when used at the start of a line": "Comment, when used at the start of a line",
     "Compression is recommended in most setups.": "Compression is recommended in most setups.",
     "Connection Error": "Connection Error",
+    "Copied from elsewhere": "Copied from elsewhere",
+    "Copied from original": "Copied from original",
     "Copyright © 2014 Jakob Borg and the following Contributors:": "Copyright © 2014 Jakob Borg and the following Contributors:",
     "Delete": "Delete",
     "Device ID": "Device ID",
     "Device Identification": "Device Identification",
     "Device Name": "Device Name",
+    "Device {%device%} ({%address%}) wants to connect. Add new device?": "Device {{device}} ({{address}}) wants to connect. Add new device?",
     "Disconnected": "Disconnected",
     "Documentation": "Documentation",
     "Download Rate": "Download Rate",
+    "Downloaded": "Downloaded",
+    "Downloading": "Downloading",
     "Edit": "Edit",
     "Edit Device": "Edit Device",
     "Edit Folder": "Edit Folder",
@@ -38,6 +45,7 @@
     "Folder ID": "Folder ID",
     "Folder Master": "Folder Master",
     "Folder Path": "Folder Path",
+    "Folders": "Folders",
     "GUI Authentication Password": "GUI Authentication Password",
     "GUI Authentication User": "GUI Authentication User",
     "GUI Listen Addresses": "GUI Listen Addresses",
@@ -46,19 +54,24 @@
     "Global Discovery Server": "Global Discovery Server",
     "Global State": "Global State",
     "Idle": "Idle",
+    "Ignore": "Ignore",
     "Ignore Patterns": "Ignore Patterns",
     "Ignore Permissions": "Ignore Permissions",
     "Incoming Rate Limit (KiB/s)": "Incoming Rate Limit (KiB/s)",
     "Introducer": "Introducer",
     "Inversion of the given condition (i.e. do not exclude)": "Inversion of the given condition (i.e. do not exclude)",
     "Keep Versions": "Keep Versions",
+    "Last File Synced": "Last File Synced",
     "Last seen": "Last seen",
+    "Later": "Later",
     "Latest Release": "Latest Release",
     "Local Discovery": "Local Discovery",
     "Local State": "Local State",
     "Maximum Age": "Maximum Age",
     "Multi level wildcard (matches multiple directory levels)": "Multi level wildcard (matches multiple directory levels)",
     "Never": "Never",
+    "New Device": "New Device",
+    "New Folder": "New Folder",
     "No": "No",
     "No File Versioning": "No File Versioning",
     "Notice": "Notice",
@@ -80,11 +93,17 @@
     "Restart": "Restart",
     "Restart Needed": "Restart Needed",
     "Restarting": "Restarting",
+    "Reused": "Reused",
     "Save": "Save",
     "Scanning": "Scanning",
     "Select the devices to share this folder with.": "Select the devices to share this folder with.",
+    "Select the folders to share with this device.": "Select the folders to share with this device.",
     "Settings": "Settings",
+    "Share": "Share",
+    "Share Folder": "Share Folder",
+    "Share Folders With Device": "Share Folders With Device",
     "Share With Devices": "Share With Devices",
+    "Share this folder?": "Share this folder?",
     "Shared With": "Shared With",
     "Short identifier for the folder. Must be the same on all cluster devices.": "Short identifier for the folder. Must be the same on all cluster devices.",
     "Show ID": "Show ID",
@@ -106,6 +125,7 @@
     "Syncthing is restarting.": "Syncthing is restarting.",
     "Syncthing is upgrading.": "Syncthing is upgrading.",
     "Syncthing seems to be down, or there is a problem with your Internet connection. Retrying…": "Syncthing seems to be down, or there is a problem with your Internet connection. Retrying…",
+    "Syncthing seems to be experiencing a problem processing your request. Please refresh the page or restart Syncthing if the problem persists.": "Syncthing seems to be experiencing a problem processing your request. Please reload your browser or restart Syncthing if the problem persists.",
     "The aggregated statistics are publicly available at {%url%}.": "The aggregated statistics are publicly available at {{url}}.",
     "The configuration has been saved but not activated. Syncthing must restart to activate the new configuration.": "The configuration has been saved but not activated. Syncthing must restart to activate the new configuration.",
     "The device ID cannot be blank.": "The device ID cannot be blank.",
@@ -124,6 +144,8 @@
     "The rescan interval must be a non-negative number of seconds.": "The rescan interval must be a non-negative number of seconds.",
     "The rescan interval must be at least 5 seconds.": "The rescan interval must be at least 5 seconds.",
     "Unknown": "Unknown",
+    "Unshared": "Unshared",
+    "Unused": "Unused",
     "Up to Date": "Up to Date",
     "Upgrade To {%version%}": "Upgrade To {{version}}",
     "Upgrading": "Upgrading",
@@ -138,5 +160,6 @@
     "Yes": "Yes",
     "You must keep at least one version.": "You must keep at least one version.",
     "full documentation": "full documentation",
-    "items": "items"
+    "items": "items",
+    "{%device%} wants to share folder \"{%folder%}\".": "{{device}} wants to share folder \"{{folder}}\"."
 }

gui/assets/lang/lang-bg.json

@@ -1,8 +1,10 @@
 {
     "API Key": "API Ключ",
     "About": "За Програмата",
+    "Add": "Add",
     "Add Device": "Добави устройство",
     "Add Folder": "Добави папка",
+    "Add new folder?": "Add new folder?",
     "Address": "Адрес",
     "Addresses": "Адреси",
     "Allow Anonymous Usage Reporting?": "Разреши анонимен доклад за ползване на програмата?",
@@ -15,14 +17,19 @@
     "Comment, when used at the start of a line": "Коментар, използван в началото на реда",
     "Compression is recommended in most setups.": "Компресията е препоръчителна в повечето конфигурации.",
     "Connection Error": "Грешка при Свързването",
+    "Copied from elsewhere": "Копиране от някъде другаде",
+    "Copied from original": "Копиран от оригинала",
     "Copyright © 2014 Jakob Borg and the following Contributors:": "Правата запазени © 2014 Jakob Borg и следните Сътрудници:",
     "Delete": "Изтрий",
     "Device ID": "Идентификатор на устройство",
     "Device Identification": "Идентификация на устройство",
     "Device Name": "Име на устройство",
+    "Device {%device%} ({%address%}) wants to connect. Add new device?": "Device {{device}} ({{address}}) wants to connect. Add new device?",
     "Disconnected": "Прекрати Връзката",
     "Documentation": "Документация",
     "Download Rate": "Скорост на Теглене",
+    "Downloaded": "Изтеглен",
+    "Downloading": "Изтегляне",
     "Edit": "Промени",
     "Edit Device": "Промени устройство",
     "Edit Folder": "Промени папка",
@@ -38,6 +45,7 @@
     "Folder ID": "Идентификатор на папка",
     "Folder Master": "Главна папка",
     "Folder Path": "Път до папката",
+    "Folders": "Папки",
     "GUI Authentication Password": "Парола за Потребителския Интерфейс",
     "GUI Authentication User": "Потребител за Потребителския Интерфейс",
     "GUI Listen Addresses": "Адрес за Свързване с Потребителския Интерфейс",
@@ -46,19 +54,24 @@
     "Global Discovery Server": "Сървър за Глобално Откриване",
     "Global State": "Глобално състояние",
     "Idle": "Без Работа",
+    "Ignore": "Ignore",
     "Ignore Patterns": "Шаблони за Игнориране",
     "Ignore Permissions": "Игнорирай Права за Достъп",
     "Incoming Rate Limit (KiB/s)": "Входящ Лимит на Скоростта (KiB/s)",
     "Introducer": "Introducer",
     "Inversion of the given condition (i.e. do not exclude)": "Обратното на даденото условие (пр. не изключвай)",
     "Keep Versions": "Пази Версии",
+    "Last File Synced": "Последния синхронизиран файл",
     "Last seen": "Последно видян",
+    "Later": "Later",
     "Latest Release": "Най-новата Версия",
     "Local Discovery": "Локално Откриване",
     "Local State": "Локално състояние",
     "Maximum Age": "Максимална Възраст",
     "Multi level wildcard (matches multiple directory levels)": "Маска на много нива (покрива папки с много нива)",
     "Never": "Никога",
+    "New Device": "New Device",
+    "New Folder": "New Folder",
     "No": "Не",
     "No File Versioning": "Няма Файлови Версии",
     "Notice": "Известие",
@@ -80,11 +93,17 @@
     "Restart": "Рестартирай",
     "Restart Needed": "Изискава се Рестартиране",
     "Restarting": "Рестартиране",
+    "Reused": "Повторно използван",
     "Save": "Запази",
     "Scanning": "Сканиране",
     "Select the devices to share this folder with.": "Избери устройствата, с които да споделиш тази папка.",
+    "Select the folders to share with this device.": "Изберете папките за споделяне с това устройство.",
     "Settings": "Настройки",
+    "Share": "Share",
+    "Share Folder": "Share Folder",
+    "Share Folders With Device": "Сподели папки с това устройство",
     "Share With Devices": "Сподели с устройства",
+    "Share this folder?": "Share this folder?",
     "Shared With": "Споделена със",
     "Short identifier for the folder. Must be the same on all cluster devices.": "Кратък идентификатор на папката. Трябва да бъде същият на всички компютри.",
     "Show ID": "Покажи Идентификатора",
@@ -106,6 +125,7 @@
     "Syncthing is restarting.": "Syncthing се рестартирва",
     "Syncthing is upgrading.": "Syncthing се обновява.",
     "Syncthing seems to be down, or there is a problem with your Internet connection. Retrying…": "Syncthing изглежда не е включен, или има проблем с интерент връзката. Повторен опит...",
+    "Syncthing seems to be experiencing a problem processing your request. Please refresh the page or restart Syncthing if the problem persists.": "Syncthing seems to be experiencing a problem processing your request. Please reload your browser or restart Syncthing if the problem persists.",
     "The aggregated statistics are publicly available at {%url%}.": "Сумарната статистика е публично достъпна на {{url}}.",
     "The configuration has been saved but not activated. Syncthing must restart to activate the new configuration.": "Конфигурацията е запазена, но не е активирана. Syncthing трябва да рестартира, за да се активира новата конфигурация.",
     "The device ID cannot be blank.": "Полето идентификатор на устройство не може да бъде празно.",
@@ -121,9 +141,11 @@
     "The maximum time to keep a version (in days, set to 0 to keep versions forever).": "Максималното време да се пазят весрсии (в дни, сложи 0, за да пазиш версии завинаги).",
     "The number of old versions to keep, per file.": "Броят стари версии, които да бъдат пазени за всеки файл.",
     "The number of versions must be a number and cannot be blank.": "Броят версии трябва да бъде число и не може да бъде празно.",
-    "The rescan interval must be a non-negative number of seconds.": "The rescan interval must be a non-negative number of seconds.",
+    "The rescan interval must be a non-negative number of seconds.": "Интервала на сканиране трябва да бъде не отрицателно число в секунди.",
     "The rescan interval must be at least 5 seconds.": "Интервала за повторно сканиране трябва да бъде поне 5 секунди.",
     "Unknown": "Неясен",
+    "Unshared": "Споделянето прекратено",
+    "Unused": "Неизползван",
     "Up to Date": "Актуален",
     "Upgrade To {%version%}": "Обновен До {{version}}",
     "Upgrading": "Обновяване",
@@ -138,5 +160,6 @@
     "Yes": "Да",
     "You must keep at least one version.": "Трябва да пазиш поне една версия.",
     "full documentation": "пълна документация",
-    "items": "артикула"
+    "items": "артикула",
+    "{%device%} wants to share folder \"{%folder%}\".": "{{device}} wants to share folder \"{{folder}}\"."
 }

gui/assets/lang/lang-cs.json

@@ -1,8 +1,10 @@
 {
     "API Key": "API klíč",
     "About": "O aplikaci",
+    "Add": "Přidat",
     "Add Device": "Přidat přístroj",
     "Add Folder": "Přidat adresář",
+    "Add new folder?": "Přidat nový adresář?",
     "Address": "Adresa",
     "Addresses": "Adresy",
     "Allow Anonymous Usage Reporting?": "Povolit anonymní hlášení o používání?",
@@ -15,14 +17,19 @@
     "Comment, when used at the start of a line": "Komentář, pokud použito na začátku řádku",
     "Compression is recommended in most setups.": "Komprese je doporučena pro většinu nastavení.",
     "Connection Error": "Chyba připojení",
+    "Copied from elsewhere": "Zkopírováno odjinud",
+    "Copied from original": "Zkopírováno z originálu",
     "Copyright © 2014 Jakob Borg and the following Contributors:": "Copyright © 2014 Jakob Borg a následující přispěvatelé:",
     "Delete": "Smazat",
     "Device ID": "ID přístroje",
     "Device Identification": "Identifikace přístroje",
     "Device Name": "Jméno přístroje",
+    "Device {%device%} ({%address%}) wants to connect. Add new device?": "Přístroj {{device}} ({{address}}) žádá o připojení. Chcete ho přidat?",
     "Disconnected": "Odpojeno",
     "Documentation": "Dokumentace",
     "Download Rate": "Rychlost stahování",
+    "Downloaded": "Staženo",
+    "Downloading": "Stahuji",
     "Edit": "Upravit",
     "Edit Device": "Upravit přístroj",
     "Edit Folder": "Upravit adresář",
@@ -38,6 +45,7 @@
     "Folder ID": "ID adresáře",
     "Folder Master": "Master adresář",
     "Folder Path": "Cesta k adresáři",
+    "Folders": "Adresáře",
     "GUI Authentication Password": "Přihlašovací heslo pro GUI",
     "GUI Authentication User": "Přihlašovací jméno pro GUI",
     "GUI Listen Addresses": "Adresa naslouchání GUI",
@@ -46,19 +54,24 @@
     "Global Discovery Server": "Server globálního oznamování",
     "Global State": "Všeobecný status",
     "Idle": "Nečinný",
+    "Ignore": "Ignorovat",
     "Ignore Patterns": "Ignorované vzory",
     "Ignore Permissions": "Ignorovat oprávnění",
     "Incoming Rate Limit (KiB/s)": "Omezení příchozí rychlosti (KiB/s)",
     "Introducer": "Zavaděč",
     "Inversion of the given condition (i.e. do not exclude)": "Prohození zadané podmínky (např. nevynechat)",
     "Keep Versions": "Ponechat verze",
+    "Last File Synced": "Poslední soubor synchronizován",
     "Last seen": "Naposledy spatřen",
+    "Later": "Později",
     "Latest Release": "Poslední vydání",
     "Local Discovery": "Místní oznamování",
     "Local State": "Místní status",
     "Maximum Age": "Maximální časový limit",
     "Multi level wildcard (matches multiple directory levels)": "Víceúrovňový zástupný znak (shoda skrz více úrovní adresářů)",
     "Never": "Nikdy",
+    "New Device": "Nový přístroj",
+    "New Folder": "Nový adresář",
     "No": "Ne",
     "No File Versioning": "Bez verzí souborů",
     "Notice": "Oznámení",
@@ -80,11 +93,17 @@
     "Restart": "Restart",
     "Restart Needed": "Je nutný restart",
     "Restarting": "Restartuji",
+    "Reused": "Opakovaně použité",
     "Save": "Uložit",
     "Scanning": "Skenování",
     "Select the devices to share this folder with.": "Vybrat přístroje se kterými sdílet tento adresář.",
+    "Select the folders to share with this device.": "Vybrat adresáře sdílené tomuto přístroji.",
     "Settings": "Nastavení",
+    "Share": "Sdílet",
+    "Share Folder": "Sdílet adresář",
+    "Share Folders With Device": "Sdílet adresáře tomuto přístroji",
     "Share With Devices": "Sdílet s přístroji",
+    "Share this folder?": "Sdílet tento adresář?",
     "Shared With": "Sdíleno s",
     "Short identifier for the folder. Must be the same on all cluster devices.": "Krátký identifikátor tohoto adresáře. Musí být stejný na všech přístrojích v clusteru.",
     "Show ID": "Zobrazit ID",
@@ -106,6 +125,7 @@
     "Syncthing is restarting.": "Syncthing se restartuje.",
     "Syncthing is upgrading.": "Syncthing se aktualizuje.",
     "Syncthing seems to be down, or there is a problem with your Internet connection. Retrying…": "Syncthing se zdá být nefunkční, nebo je problém s připojením k Internetu. Opakuji...",
+    "Syncthing seems to be experiencing a problem processing your request. Please refresh the page or restart Syncthing if the problem persists.": "Syncthing má nejspíše problém s provedením vašeho požadavku. Pokud problém přetrvává, načtěte znovu data v prohlížeči nebo restartujte Syncthing.",
     "The aggregated statistics are publicly available at {%url%}.": "Souhrnné statistiky jsou veřejně dostupné na {{url}}.",
     "The configuration has been saved but not activated. Syncthing must restart to activate the new configuration.": "Konfigurace byla uložena, ale není aktivována. Pro aktivaci nové konfigurace je třeba restartovat Syncthing.",
     "The device ID cannot be blank.": "ID přístroje nemůže být prázdné.",
@@ -124,6 +144,8 @@
     "The rescan interval must be a non-negative number of seconds.": "Interval pro opakování skenování musí být pozitivní číslo.",
     "The rescan interval must be at least 5 seconds.": "Interval opakování skenování musí být delší než 5 sekund.",
     "Unknown": "Neznámý",
+    "Unshared": "Nesdílené",
+    "Unused": "Nepoužité",
     "Up to Date": "Aktuální",
     "Upgrade To {%version%}": "Aktualizovat na {{version}}",
     "Upgrading": "Aktualizuji",
@@ -138,5 +160,6 @@
     "Yes": "Ano",
     "You must keep at least one version.": "Je třeba ponechat alespoň jednu verzi.",
     "full documentation": "plná dokumentace",
-    "items": "položky"
+    "items": "položky",
+    "{%device%} wants to share folder \"{%folder%}\".": "{{device}} chce sdílet adresář \"{{folder}}\"."
 }

gui/assets/lang/lang-de.json

@@ -1,8 +1,10 @@
 {
     "API Key": "API-Schlüssel",
     "About": "Über Syncthing",
+    "Add": "Hinzufügen",
     "Add Device": "Gerät hinzufügen",
     "Add Folder": "Verzeichnis hinzufügen",
+    "Add new folder?": "Neues Verzeichnis hinzufügen?",
     "Address": "Adresse",
     "Addresses": "Adressen",
     "Allow Anonymous Usage Reporting?": "Übertragung von anonymen Nutzungsberichten erlauben?",
@@ -15,14 +17,19 @@
     "Comment, when used at the start of a line": "Kommentar, wenn am Anfang der Zeile benutzt.",
     "Compression is recommended in most setups.": "Datenkomprimierung ist für die meisten Anwendungen empfohlen",
     "Connection Error": "Verbindungsfehler",
+    "Copied from elsewhere": "Von woanders kopiert",
+    "Copied from original": "Vom Originial kopiert",
     "Copyright © 2014 Jakob Borg and the following Contributors:": "Copyright © 2014 Jakob Borg und folgende Unterstützer:",
     "Delete": "Löschen",
     "Device ID": "Geräte ID",
     "Device Identification": "Gerät Identifikation",
     "Device Name": "Gerätename",
+    "Device {%device%} ({%address%}) wants to connect. Add new device?": "Gerät {{device}} ({{address}}) möchte sich verbinden. Gerät hinzufügen?",
     "Disconnected": "Getrennt",
     "Documentation": "Dokumentation",
-    "Download Rate": "Downloadgeschwindigkeit",
+    "Download Rate": "Download",
+    "Downloaded": "Heruntergeladen",
+    "Downloading": "Lädt herunter",
     "Edit": "Bearbeiten",
     "Edit Device": "Gerät bearbeiten",
     "Edit Folder": "Verzeichnis bearbeiten",
@@ -33,11 +40,12 @@
     "Error": "Fehler",
     "File Versioning": "Dateiversionierung",
     "File permission bits are ignored when looking for changes. Use on FAT filesystems.": "Dateizugriffsrechte beim Suchen nach Veränderungen ignorieren. Bei FAT-Dateisystemen verwenden.",
-    "Files are moved to date stamped versions in a .stversions folder when replaced or deleted by syncthing.": "Dateien werden, bevor Syncthing sie löscht oder ersetzt, als datierte Versionen in einen Ordner names .stversions verschoben.",
+    "Files are moved to date stamped versions in a .stversions folder when replaced or deleted by syncthing.": "Dateien werden, bevor Syncthing sie löscht oder ersetzt, als datierte Versionen in ein Verzeichnis names .stversions verschoben.",
     "Files are protected from changes made on other devices, but changes made on this device will be sent to the rest of the cluster.": "Dateien sind vor Veränderung durch andere Geräte geschützt, auf diesem Gerät durchgeführte Veränderungen werden aber auf den Rest des Verbunds übertragen.",
     "Folder ID": "Verzeichnis ID",
     "Folder Master": "Keine Veränderungen zulassen",
     "Folder Path": "Verzeichnispfad",
+    "Folders": "Verzeichnisse",
     "GUI Authentication Password": "Passwort für Zugang zur Benutzeroberfläche",
     "GUI Authentication User": "Nutzername für Zugang zur Benutzeroberfläche",
     "GUI Listen Addresses": "Adresse(n) für die Benutzeroberfläche",
@@ -46,22 +54,27 @@
     "Global Discovery Server": "Globaler Auffindungsserver",
     "Global State": "Globaler Status",
     "Idle": "Untätig",
+    "Ignore": "Ignorieren",
     "Ignore Patterns": "Ignoriermuster",
     "Ignore Permissions": "Berechtigungen ignorieren",
     "Incoming Rate Limit (KiB/s)": "Eingehendes Datenratelimit (KiB/s)",
     "Introducer": "Verteilergerät",
     "Inversion of the given condition (i.e. do not exclude)": "Umkehrung der angegebenen Bedingung (z.B. schließe nicht aus)",
     "Keep Versions": "Versionen erhalten",
+    "Last File Synced": "Letzte Änderung",
     "Last seen": "Zuletzt online",
+    "Later": "Später",
     "Latest Release": "Letzte Veröffentlichung",
     "Local Discovery": "Lokale Auffindung",
     "Local State": "Lokaler Status",
     "Maximum Age": "Höchstalter",
     "Multi level wildcard (matches multiple directory levels)": "Verschachteltes Maskenzeichen (wird für verschachtelte Verzeichnisse verwendet)",
     "Never": "Nie",
+    "New Device": "Neues Gerät",
+    "New Folder": "Neues Verzeichnis",
     "No": "Nein",
     "No File Versioning": "Keine Dateiversionierung",
-    "Notice": "Benachrichtigung",
+    "Notice": "Hinweis",
     "OK": "Ok",
     "Offline": "Offline",
     "Online": "Online",
@@ -69,22 +82,28 @@
     "Outgoing Rate Limit (KiB/s)": "Ausgehendes Datenratelimit (KiB/s)",
     "Override Changes": "Änderungen überschreiben",
     "Path to the folder on the local computer. Will be created if it does not exist. The tilde character (~) can be used as a shortcut for": "Pfad zum Verzeichnis auf dem lokalen Rechner. Wird erzeugt, wenn es nicht existiert. Das Tilden-Zeichen (~) kann als Abkürzung benutzt werden für",
-    "Path where versions should be stored (leave empty for the default .stversions folder in the folder).": "Pfad in dem die Versionen gespeichert werden sollen (ohne Angabe wird der Ordner .stversions im Verzeichnis verwendet).",
+    "Path where versions should be stored (leave empty for the default .stversions folder in the folder).": "Pfad in dem die Versionen gespeichert werden sollen (ohne Angabe wird das Verzeichnis .stversions im Verzeichnis verwendet).",
     "Please wait": "Bitte warten",
     "Preview": "Vorschau",
     "Preview Usage Report": "Vorschau des Nutzungsberichts",
     "Quick guide to supported patterns": "Schnellanleitung zu den unterstützten Suchstrukturen",
-    "RAM Utilization": "Verwendeter Arbeitsspeicher",
+    "RAM Utilization": "RAM Auslastung",
     "Rescan": "Überprüfen",
     "Rescan Interval": "Suchintervall",
     "Restart": "Neustart",
     "Restart Needed": "Neustart notwendig",
     "Restarting": "Wird neu gestartet",
+    "Reused": "Erneut benutzt",
     "Save": "Speichern",
     "Scanning": "Suche",
     "Select the devices to share this folder with.": "Wähle die Geräte aus, mit denen Du dieses Verzeichnis teilen willst.",
+    "Select the folders to share with this device.": "Wähle die Verzeichnisse aus, die du mit diesem Gerät teilen möchtest",
     "Settings": "Einstellungen",
+    "Share": "Teilen",
+    "Share Folder": "Teile Verzeichnis",
+    "Share Folders With Device": "Teile Verzeichnisse mit diesem Gerät",
     "Share With Devices": "Teile mit diesen Geräten",
+    "Share this folder?": "Dieses Verzeichnis teilen?",
     "Shared With": "Geteilt mit",
     "Short identifier for the folder. Must be the same on all cluster devices.": "Kurze ID für das Verzeichnis. Muss auf allen Verbunds-Geräten gleich sein.",
     "Show ID": "ID anzeigen",
@@ -106,6 +125,7 @@
     "Syncthing is restarting.": "Syncthing wird neu gestartet",
     "Syncthing is upgrading.": "Syncthing wird aktualisiert",
     "Syncthing seems to be down, or there is a problem with your Internet connection. Retrying…": "Syncthing scheint nicht erreichbar zu sein oder es gibt ein Problem mit Deiner Internetverbindung. Versuche erneut...",
+    "Syncthing seems to be experiencing a problem processing your request. Please refresh the page or restart Syncthing if the problem persists.": "Es scheint als ob Syncthing ein Problem mit der Verarbeitung ihrer Eingabe hat. Bitte laden sie die Seite neu oder führen sie einen Neustart von Syncthing durch, falls das Problem weiterhin besteht.",
     "The aggregated statistics are publicly available at {%url%}.": "Die gesammelten Statistiken sind öffentlich verfügbar unter {{url}}.",
     "The configuration has been saved but not activated. Syncthing must restart to activate the new configuration.": "Die Konfiguration wurde gespeichert, aber nicht aktiviert. Syncthing muss neugestartet werden um die neue Konfiguration zu aktivieren.",
     "The device ID cannot be blank.": "Die Geräte ID darf nicht leer sein.",
@@ -124,10 +144,12 @@
     "The rescan interval must be a non-negative number of seconds.": "Das Suchintervall muss eine nicht negative Anzahl von Sekunden sein.",
     "The rescan interval must be at least 5 seconds.": "Das Suchintervall muss mindestens 5 Sekunden betragen.",
     "Unknown": "Unbekannt",
+    "Unshared": "Ungeteilt",
+    "Unused": "Ungenutzt",
     "Up to Date": "Aktuell",
     "Upgrade To {%version%}": "Update auf {{version}}",
     "Upgrading": "Wird aktualisiert",
-    "Upload Rate": "Uploadgeschwindigkeit",
+    "Upload Rate": "Upload",
     "Use Compression": "Benutze Komprimierung",
     "Use HTTPS for GUI": "HTTPS für Benutzeroberfläche benutzen",
     "Version": "Version",
@@ -138,5 +160,6 @@
     "Yes": "Ja",
     "You must keep at least one version.": "Du musst mindestens eine Version behalten.",
     "full documentation": "Komplette Dokumentation",
-    "items": "Einträge"
+    "items": "Einträge",
+    "{%device%} wants to share folder \"{%folder%}\".": "{{device}} möchte das Verzeichnis \"{{folder}}\" teilen."
 }

gui/assets/lang/lang-en.json

@@ -1,8 +1,10 @@
 {
    "API Key": "API Key",
    "About": "About",
+   "Add": "Add",
    "Add Device": "Add Device",
    "Add Folder": "Add Folder",
+   "Add new folder?": "Add new folder?",
    "Address": "Address",
    "Addresses": "Addresses",
    "Allow Anonymous Usage Reporting?": "Allow Anonymous Usage Reporting?",
@@ -22,6 +24,7 @@
    "Device ID": "Device ID",
    "Device Identification": "Device Identification",
    "Device Name": "Device Name",
+   "Device {%device%} ({%address%}) wants to connect. Add new device?": "Device {{device}} ({{address}}) wants to connect. Add new device?",
    "Disconnected": "Disconnected",
    "Documentation": "Documentation",
    "Download Rate": "Download Rate",
@@ -51,6 +54,7 @@
    "Global Discovery Server": "Global Discovery Server",
    "Global State": "Global State",
    "Idle": "Idle",
+   "Ignore": "Ignore",
    "Ignore Patterns": "Ignore Patterns",
    "Ignore Permissions": "Ignore Permissions",
    "Incoming Rate Limit (KiB/s)": "Incoming Rate Limit (KiB/s)",
@@ -59,13 +63,15 @@
    "Keep Versions": "Keep Versions",
    "Last File Synced": "Last File Synced",
    "Last seen": "Last seen",
+   "Later": "Later",
    "Latest Release": "Latest Release",
-   "Legend:": "Legend:",
    "Local Discovery": "Local Discovery",
    "Local State": "Local State",
    "Maximum Age": "Maximum Age",
    "Multi level wildcard (matches multiple directory levels)": "Multi level wildcard (matches multiple directory levels)",
    "Never": "Never",
+   "New Device": "New Device",
+   "New Folder": "New Folder",
    "No": "No",
    "No File Versioning": "No File Versioning",
    "Notice": "Notice",
@@ -93,8 +99,11 @@
    "Select the devices to share this folder with.": "Select the devices to share this folder with.",
    "Select the folders to share with this device.": "Select the folders to share with this device.",
    "Settings": "Settings",
+   "Share": "Share",
+   "Share Folder": "Share Folder",
    "Share Folders With Device": "Share Folders With Device",
    "Share With Devices": "Share With Devices",
+   "Share this folder?": "Share this folder?",
    "Shared With": "Shared With",
    "Short identifier for the folder. Must be the same on all cluster devices.": "Short identifier for the folder. Must be the same on all cluster devices.",
    "Show ID": "Show ID",
@@ -116,6 +125,7 @@
    "Syncthing is restarting.": "Syncthing is restarting.",
    "Syncthing is upgrading.": "Syncthing is upgrading.",
    "Syncthing seems to be down, or there is a problem with your Internet connection. Retrying…": "Syncthing seems to be down, or there is a problem with your Internet connection. Retrying…",
+   "Syncthing seems to be experiencing a problem processing your request. Please refresh the page or restart Syncthing if the problem persists.": "Syncthing seems to be experiencing a problem processing your request. Please reload your browser or restart Syncthing if the problem persists.",
    "The aggregated statistics are publicly available at {%url%}.": "The aggregated statistics are publicly available at {{url}}.",
    "The configuration has been saved but not activated. Syncthing must restart to activate the new configuration.": "The configuration has been saved but not activated. Syncthing must restart to activate the new configuration.",
    "The device ID cannot be blank.": "The device ID cannot be blank.",
@@ -150,5 +160,6 @@
    "Yes": "Yes",
    "You must keep at least one version.": "You must keep at least one version.",
    "full documentation": "full documentation",
-   "items": "items"
+   "items": "items",
+   "{%device%} wants to share folder \"{%folder%}\".": "{{device}} wants to share folder \"{{folder}}\"."
 }

gui/assets/lang/lang-es.json

@@ -1,8 +1,10 @@
 {
     "API Key": "Clave API",
     "About": "Acerca de",
+    "Add": "Agregar",
     "Add Device": "Agregar dispositivo",
     "Add Folder": "Agregar repositorio",
+    "Add new folder?": "¿Agregar nuevo repositorio?",
     "Address": "Dirección",
     "Addresses": "Direcciones",
     "Allow Anonymous Usage Reporting?": "Permitir reporte anónimo de uso?",
@@ -15,20 +17,25 @@
     "Comment, when used at the start of a line": "Comentario, cuando es utilizado al inicio de una línea.",
     "Compression is recommended in most setups.": "La compresión de datos es recomendada para la mayoría de las configuraciones.",
     "Connection Error": "Error de conexión",
+    "Copied from elsewhere": "Copiado de otra parte.",
+    "Copied from original": "Copiado del original",
     "Copyright © 2014 Jakob Borg and the following Contributors:": "Derechos de autor © 2014 Jakob Borg y los siguientes  colaboradores:",
     "Delete": "Suprimir",
     "Device ID": "ID del dispositivo",
     "Device Identification": "Identificación del dispositivo",
     "Device Name": "Nombre del dispositivo",
+    "Device {%device%} ({%address%}) wants to connect. Add new device?": "El dispositivo {{device}} ({{address}}) se quiere conectar. ¿Agregar nuevo dispositivo?",
     "Disconnected": "Desconectado",
     "Documentation": "Documentación",
     "Download Rate": "Tasa de descarga",
+    "Downloaded": "Descargado",
+    "Downloading": "Descargando",
     "Edit": "Editar",
     "Edit Device": "Editar dispositivo",
     "Edit Folder": "Editar repositorio",
     "Editing": "Editando",
     "Enable UPnP": "Permitir UPnP",
-    "Enter comma separated \"ip:port\" addresses or \"dynamic\" to perform automatic discovery of the address.": "Ingrese las direcciones \"ip:puerto\" separadas por coma o \"dynamic\" para descubrir automáticamente las direcciones.",
+    "Enter comma separated \"ip:port\" addresses or \"dynamic\" to perform automatic discovery of the address.": "Ingrese las direcciones \"ip:puerto\" separadas por coma, o \"dynamic\" para descubrir automáticamente las direcciones.",
     "Enter ignore patterns, one per line.": "Añadir patrones de exclusión, uno por línea.",
     "Error": "Error",
     "File Versioning": "Control de versiones",
@@ -38,6 +45,7 @@
     "Folder ID": "ID del repositorio",
     "Folder Master": "Repositorio maestro",
     "Folder Path": "Ruta del repositorio",
+    "Folders": "Repositorios",
     "GUI Authentication Password": "Contraseña de autenticación de la GUI",
     "GUI Authentication User": "Usuario de la GUI",
     "GUI Listen Addresses": "Direcciones de escucha para la GUI.",
@@ -46,19 +54,24 @@
     "Global Discovery Server": "Servidor global de identificación",
     "Global State": "Estado Global",
     "Idle": "Inactivo",
+    "Ignore": "Ignorar",
     "Ignore Patterns": "Patrones de exclusión",
     "Ignore Permissions": "Ignorar permisos",
     "Incoming Rate Limit (KiB/s)": "Límite de velocidad de entrada (KiB/s)",
     "Introducer": "Introductor",
     "Inversion of the given condition (i.e. do not exclude)": "Inversión de la condición dada (es decir, no excluir)",
     "Keep Versions": "Conservar versiones",
+    "Last File Synced": "Último archivo sincronizado.",
     "Last seen": "Visto por ultima vez",
+    "Later": "Más tarde",
     "Latest Release": "Última versión",
     "Local Discovery": "Búsqueda en red local",
     "Local State": "Estado Local",
     "Maximum Age": "Edad máxima",
     "Multi level wildcard (matches multiple directory levels)": "Multi level wildcard (matches multiple directory levels)",
     "Never": "Nunca",
+    "New Device": "Nuevo dispositivo",
+    "New Folder": "Nuevo repositorio",
     "No": "No",
     "No File Versioning": "Sin control de versiones de archivos",
     "Notice": "Aviso",
@@ -80,16 +93,22 @@
     "Restart": "Reiniciar",
     "Restart Needed": "Es necesario reiniciar",
     "Restarting": "Reiniciando",
+    "Reused": "Reutilizado",
     "Save": "Guardar",
     "Scanning": "Actualización",
     "Select the devices to share this folder with.": "Seleccione los dispositivos con los cuales compartir este repositorio.",
+    "Select the folders to share with this device.": "Seleccione los repositorios para compartir con este dispositivo.",
     "Settings": "Configuración",
+    "Share": "Compartir",
+    "Share Folder": "Compartir repositorio",
+    "Share Folders With Device": "Compartir repositorios con dispositivo",
     "Share With Devices": "Compartir con los dispositivos",
+    "Share this folder?": "¿Compartir este repositorio?",
     "Shared With": "Compartido con",
     "Short identifier for the folder. Must be the same on all cluster devices.": "Identificador corto para el repositorio. Debe ser el mismo en todos los dispositivos del grupo.",
     "Show ID": "Mostrar ID",
-    "Shown instead of Device ID in the cluster status. Will be advertised to other devices as an optional default name.": "Shown instead of Device ID in the cluster status. Will be advertised to other devices as an optional default name.",
-    "Shown instead of Device ID in the cluster status. Will be updated to the name the device advertises if left empty.": "Shown instead of Device ID in the cluster status. Will be updated to the name the device advertises if left empty.",
+    "Shown instead of Device ID in the cluster status. Will be advertised to other devices as an optional default name.": "Mostrado en lugar de la ID del dispositivo en el estado del grupo. Será sugerido a otros dispositivos como nombre predeterminado opcional.",
+    "Shown instead of Device ID in the cluster status. Will be updated to the name the device advertises if left empty.": "Mostrado en lugar de la ID del dispositivo en el estado del grupo. Si se deja en blanco, será usado el nombre sugerido por el dispositivo.",
     "Shutdown": "Apagar",
     "Simple File Versioning": "Versiones simple de archivos",
     "Single level wildcard (matches within a directory only)": "Single level wildcard (matches within a directory only)",
@@ -106,9 +125,10 @@
     "Syncthing is restarting.": "Syncthing está reiniciando.",
     "Syncthing is upgrading.": "Syncthing se está actualizando.",
     "Syncthing seems to be down, or there is a problem with your Internet connection. Retrying…": "Syncthing parece estar apagado, o hay un problema con su conexión de Internet. Reintentando...",
-    "The aggregated statistics are publicly available at {%url%}.": "Las estadísticas acumuladas están públicamente disponibles en {{url}}.",
+    "Syncthing seems to be experiencing a problem processing your request. Please refresh the page or restart Syncthing if the problem persists.": "Syncthing parece estar experimentando un problema al procesar su solicitud. Por favor, recargue el navegador o reinicie Syncthing si el problema persiste.",
+    "The aggregated statistics are publicly available at {%url%}.": "Las estadísticas acumuladas están disponibles públicamente en {{url}}.",
     "The configuration has been saved but not activated. Syncthing must restart to activate the new configuration.": "La configuración ha sido guardada pero no activada.\nSyncthing debe reiniciarse para activar la nueva configuración.",
-    "The device ID cannot be blank.": "El ID del dispositivo no puede estar en blanco.",
+    "The device ID cannot be blank.": "La ID del dispositivo no puede estar en blanco.",
     "The device ID to enter here can be found in the \"Edit > Show ID\" dialog on the other device. Spaces and dashes are optional (ignored).": "La ID del dispositivo a introducir se puede encontrar en la opción de menú \"Edición > Mostrar ID\" en el otro dispositivo. Espacios y guiones son opcionales (ignorados).",
     "The encrypted usage report is sent daily. It is used to track common platforms, folder sizes and app versions. If the reported data set is changed you will be prompted with this dialog again.": "El informe de uso se envía encriptado diariamente. Se utiliza para hacer un seguimiento de plataformas comunes, tamaño de repositorios y versiones de la aplicación. Si el conjunto de datos cambia será notificado mediante este dialogo nuevamente.",
     "The entered device ID does not look valid. It should be a 52 or 56 character string consisting of letters and numbers, with spaces and dashes being optional.": "La ID del dispositivo introducida no es válida. Debe ser una cadena de 52 o 56 caracteres consistente en letras y números, con espacios y guiones opcionales.",
@@ -124,6 +144,8 @@
     "The rescan interval must be a non-negative number of seconds.": "El intervalo de reescaneo debe ser un número no negativo de segundos.",
     "The rescan interval must be at least 5 seconds.": "El intervalo de reescaneo debe ser al menos de 5 segundos.",
     "Unknown": "Desconocido",
+    "Unshared": "No compartido",
+    "Unused": "No utilizado",
     "Up to Date": "Actualizado",
     "Upgrade To {%version%}": "Actualizar a {{version}}",
     "Upgrading": "Actualizando",
@@ -138,5 +160,6 @@
     "Yes": "Sí",
     "You must keep at least one version.": "Debe mantener al menos una versión",
     "full documentation": "documentación completa",
-    "items": "Artículos"
+    "items": "Artículos",
+    "{%device%} wants to share folder \"{%folder%}\".": "{{device}} quiere compartir repositorio \"{{folder}}\"."
 }

gui/assets/lang/lang-fr.json

@@ -1,8 +1,10 @@
 {
     "API Key": "Clé API",
     "About": "À propos",
+    "Add": "Ajouter",
     "Add Device": "Ajouter un périphérique",
     "Add Folder": "Ajouter un répertoire",
+    "Add new folder?": "Ajouter un nouveau répertoire ?",
     "Address": "Adresse",
     "Addresses": "Adresses",
     "Allow Anonymous Usage Reporting?": "Autoriser le rapport anonyme de statistiques d'utilisation ?",
@@ -15,21 +17,26 @@
     "Comment, when used at the start of a line": "Commentaire, lorsque utilisé en début de ligne",
     "Compression is recommended in most setups.": "La compression est recommandée pour la plupart des configurations.",
     "Connection Error": "Erreur de connexion",
+    "Copied from elsewhere": "Copié d'ailleurs",
+    "Copied from original": "Copié de l'original",
     "Copyright © 2014 Jakob Borg and the following Contributors:": "Copyright © 2014 Jakob Borg et les contributeurs suivants :",
     "Delete": "Supprimer",
     "Device ID": "ID du périphérique",
     "Device Identification": "Identification de l'appareil",
     "Device Name": "Nom du périphérique",
+    "Device {%device%} ({%address%}) wants to connect. Add new device?": "La machine {{device}} ({{address}}) veut se connecter. Voulez-vous ajouter cette machine ?",
     "Disconnected": "Déconnecté",
     "Documentation": "Documentation",
     "Download Rate": "Débit de réception",
+    "Downloaded": "Téléchargé",
+    "Downloading": "En cours de téléchargement",
     "Edit": "Éditer",
     "Edit Device": "Éditer le périphérique",
     "Edit Folder": "Éditer le répertoire",
     "Editing": "Édition",
     "Enable UPnP": "Activer l'UPnP",
     "Enter comma separated \"ip:port\" addresses or \"dynamic\" to perform automatic discovery of the address.": "Entrer les adresses \"ip:port\" séparées par une virgule ou \"dynamic\" afin d'activer la recherche automatique de l'adresse.",
-    "Enter ignore patterns, one per line.": "Entrer les modèles à ignorer, un par ligne.",
+    "Enter ignore patterns, one per line.": "Entrer les masques de filtrage, un par ligne.",
     "Error": "Erreur",
     "File Versioning": "Versions de fichier",
     "File permission bits are ignored when looking for changes. Use on FAT filesystems.": "Les permissions de fichier sont ignorées lors de la recherche de changements. À utiliser sur les systèmes de fichiers de type FAT.",
@@ -38,6 +45,7 @@
     "Folder ID": "ID du répertoire",
     "Folder Master": "Répertoire maître",
     "Folder Path": "Chemin du répertoire",
+    "Folders": "Répertoires",
     "GUI Authentication Password": "Mot de passe d'authentification GUI",
     "GUI Authentication User": "Utilistateur autorisé GUI",
     "GUI Listen Addresses": "Adresse du GUI",
@@ -46,19 +54,24 @@
     "Global Discovery Server": "Serveur global de recherche",
     "Global State": "État global",
     "Idle": "Au repos",
+    "Ignore": "Ignorer",
     "Ignore Patterns": "Modèles à éviter",
     "Ignore Permissions": "Ignorer les permissions",
     "Incoming Rate Limit (KiB/s)": "Limite du débit entrant (KiB/s)",
     "Introducer": "Initiateur",
     "Inversion of the given condition (i.e. do not exclude)": "Inverser la condition donnée (i.e. ne pas exclure)",
     "Keep Versions": "Conserver les versions",
+    "Last File Synced": "Dernier fichier synchronisé",
     "Last seen": "Dernière apparition",
+    "Later": "Plus tard",
     "Latest Release": "Dernière version",
     "Local Discovery": "Recherche locale",
     "Local State": "État local",
     "Maximum Age": "Ancienneté maximum",
     "Multi level wildcard (matches multiple directory levels)": "Astérisque à plusieurs niveaux (correspond aux répertoires et sous-répertoires)",
     "Never": "Jamais",
+    "New Device": "Nouvelle machine",
+    "New Folder": "Nouveau répertoire",
     "No": "Non",
     "No File Versioning": "Pas de version de fichier",
     "Notice": "Notification",
@@ -73,25 +86,31 @@
     "Please wait": "Merci de patienter",
     "Preview": "Aperçu",
     "Preview Usage Report": "Aperçu du rapport de statistiques d'utilisation",
-    "Quick guide to supported patterns": "Guide rapide des modèles supportés",
+    "Quick guide to supported patterns": "Guide rapide des masques supportés",
     "RAM Utilization": "Utilisation de la RAM",
     "Rescan": "Rescanner",
     "Rescan Interval": "Intervalle de scan",
     "Restart": "Redémarrer",
     "Restart Needed": "Redémarrage nécessaire",
     "Restarting": "Redémarrage",
+    "Reused": "Réutilisé",
     "Save": "Sauver",
     "Scanning": "En cours de scan",
-    "Select the devices to share this folder with.": "Sélectionner les appareils avec qui partager ce répertoire.",
+    "Select the devices to share this folder with.": "Sélectionner les machines avec qui partager ce répertoire.",
+    "Select the folders to share with this device.": "Sélectionner les répertoires à partager avec cette machine.",
     "Settings": "Configuration",
-    "Share With Devices": "Partager avec les périphériques",
+    "Share": "Partager",
+    "Share Folder": "Partager le répertoire",
+    "Share Folders With Device": "Partager des répertoires avec des machines",
+    "Share With Devices": "Partager avec les machines",
+    "Share this folder?": "Voulez-vous partager ce répertoire ?",
     "Shared With": "Partagé avec",
-    "Short identifier for the folder. Must be the same on all cluster devices.": "Court identifiant du répertoire. Il doit être le même sur l'ensemble des appareils du groupe.",
+    "Short identifier for the folder. Must be the same on all cluster devices.": "Court identifiant du répertoire. Il doit être le même sur l'ensemble des machines du groupe.",
     "Show ID": "Montrer l'ID",
-    "Shown instead of Device ID in the cluster status. Will be advertised to other devices as an optional default name.": "Affiché à la place de l'ID de l'appareil dans le statut du groupe. Sera proposé aux autres nœuds comme un nom par défaut optionnel.",
-    "Shown instead of Device ID in the cluster status. Will be updated to the name the device advertises if left empty.": "Affiché à la place de l'ID de l'appareil dans le statut du groupe. Si laissé vide, il sera changé par le nom proposé par l'appareil.",
+    "Shown instead of Device ID in the cluster status. Will be advertised to other devices as an optional default name.": "Affiché à la place de l'ID de la machine dans le groupe. Sera proposé aux autres machines comme nom optionnel par défaut.",
+    "Shown instead of Device ID in the cluster status. Will be updated to the name the device advertises if left empty.": "Affiché à la place de l'ID de la machine dans le groupe. Si laissé vide, il sera mis à jour par le nom proposé par la machine distante.",
     "Shutdown": "Éteindre",
-    "Simple File Versioning": "Versions simples de fichier",
+    "Simple File Versioning": "Suivi simple des versions de fichier",
     "Single level wildcard (matches within a directory only)": "Astérisque à un seul niveau (correspond uniquement à l’intérieur du répertoire)",
     "Source Code": "Code source",
     "Staggered File Versioning": "Versions échelonnées de fichier",
@@ -106,6 +125,7 @@
     "Syncthing is restarting.": "Syncthing est cours de redémarrage.",
     "Syncthing is upgrading.": "Syncthing est cours de mise à jour.",
     "Syncthing seems to be down, or there is a problem with your Internet connection. Retrying…": "Syncthing semble être éteint, ou il y a un problème avec votre connexion Internet. Nouvelle tentative ...",
+    "Syncthing seems to be experiencing a problem processing your request. Please refresh the page or restart Syncthing if the problem persists.": "Syncthing semble éprouver des difficultés à appliquer votre requête. Si le problème persiste, veuillez rafraîchir votre navigateur ou redémarrer Syncthing.",
     "The aggregated statistics are publicly available at {%url%}.": "Les statistiques agrégées sont disponibles publiquement à l'adresse {{url}}.",
     "The configuration has been saved but not activated. Syncthing must restart to activate the new configuration.": "La configuration a été sauvée mais pas activée. Syncthing doit redémarrer afin d'activer la nouvelle configuration.",
     "The device ID cannot be blank.": "L'ID de l'appareil ne peut être vide.",
@@ -120,10 +140,12 @@
     "The maximum age must be a number and cannot be blank.": "L'ancienneté maximum doit être un nombre et ne peut être vide.",
     "The maximum time to keep a version (in days, set to 0 to keep versions forever).": "Le temps maximum de conservation d'une version (en jours, mettre à 0 pour conserver les versions pour toujours)",
     "The number of old versions to keep, per file.": "Le nombre d'anciennes versions à garder, par fichier.",
-    "The number of versions must be a number and cannot be blank.": "Le nombre de version doit être un nombre et ne peut pas être vide.",
+    "The number of versions must be a number and cannot be blank.": "Le nombre de versions doit être numérique, et ne peut pas être vide.",
     "The rescan interval must be a non-negative number of seconds.": "L'intervalle de scan ne doit pas être un nombre négatif de secondes.",
     "The rescan interval must be at least 5 seconds.": "L'intervalle de scan doit être d'au minimum 5 secondes.",
     "Unknown": "Inconnu",
+    "Unshared": "Non partagé",
+    "Unused": "Non utilisé",
     "Up to Date": "Synchronisation à jour",
     "Upgrade To {%version%}": "Mettre à jour vers {{version}}",
     "Upgrading": "Mise à jour de Syncthing",
@@ -132,11 +154,12 @@
     "Use HTTPS for GUI": "Utiliser l'HTTPS pour le GUI",
     "Version": "Version",
     "Versions Path": "Emplacement des versions",
-    "Versions are automatically deleted if they are older than the maximum age or exceed the number of files allowed in an interval.": "Les versions sont supprimées automatiquement si celles-ci sont plus anciennes que l'ancienneté maximum ou que leur nombre est supérieur au nombre autorisé dans une intervale.",
+    "Versions are automatically deleted if they are older than the maximum age or exceed the number of files allowed in an interval.": "Les versions seront supprimées automatiquement, si elles dépassent la durée maximum de conservation, ou si leur nombre est supérieur à la valeur autorisée dans l'intervalle.",
     "When adding a new device, keep in mind that this device must be added on the other side too.": "Lorsqu'un appareil est ajouté, gardez à l'esprit que cet appareil doit aussi être ajouté de l'autre coté.",
     "When adding a new folder, keep in mind that the Folder ID is used to tie folders together between devices. They are case sensitive and must match exactly between all devices.": "Lorsqu'un nouveau répertoire est ajouté, gardez à l'esprit que son ID est utilisé pour lier les répertoires à travers les appareils. Les ID sont sensibles à la casse et doivent être identiques à travers tous les nœuds.",
     "Yes": "Oui",
     "You must keep at least one version.": "Vous devez garder au minimum une version.",
     "full documentation": "documentation complète",
-    "items": "éléments"
+    "items": "éléments",
+    "{%device%} wants to share folder \"{%folder%}\".": "{{device}} veut partager le répertoire \"{{folder}}\"."
 }

gui/assets/lang/lang-hu.json

@@ -1,8 +1,10 @@
 {
     "API Key": "API kulcs",
     "About": "Névjegy",
+    "Add": "Add",
     "Add Device": "Eszköz hozzáadása",
     "Add Folder": "Mappa hozzáadása",
+    "Add new folder?": "Add new folder?",
     "Address": "Cím",
     "Addresses": "Címek",
     "Allow Anonymous Usage Reporting?": "Engedélyezed a névtelen felhasználási adatok küldését?",
@@ -15,14 +17,19 @@
     "Comment, when used at the start of a line": "Megjegyzés, a sor elején használva",
     "Compression is recommended in most setups.": "A tömörítés a a legtöbb esetben ajánlott",
     "Connection Error": "Kapcsolódási hiba",
+    "Copied from elsewhere": "Másolva máshonnan",
+    "Copied from original": "Másolva az eredetiről",
     "Copyright © 2014 Jakob Borg and the following Contributors:": "Copyright © 2014 Jakob Borg és az alábbi Közreműködők",
     "Delete": "Törlés",
     "Device ID": "Eszköz azonosító",
     "Device Identification": "Eszköz azonosító",
     "Device Name": "Eszköz neve",
+    "Device {%device%} ({%address%}) wants to connect. Add new device?": "Device {{device}} ({{address}}) wants to connect. Add new device?",
     "Disconnected": "Kapcsolat bontva",
     "Documentation": "Dokumentáció",
     "Download Rate": "Letöltési sebesség",
+    "Downloaded": "Letöltve",
+    "Downloading": "Letöltés",
     "Edit": "Szerkesztés",
     "Edit Device": "Eszköz szerkesztése",
     "Edit Folder": "Mappa szerkesztése",
@@ -38,6 +45,7 @@
     "Folder ID": "Mappa azonosító",
     "Folder Master": "Központi mappa",
     "Folder Path": "Mappa elérési útja",
+    "Folders": "Mappák",
     "GUI Authentication Password": "Grafikus felület jelszava",
     "GUI Authentication User": "Grafikus felület felhasználó neve ",
     "GUI Listen Addresses": "Grafikus felület címe",
@@ -46,19 +54,24 @@
     "Global Discovery Server": "Globális felfedező szerver",
     "Global State": "Globális állapot",
     "Idle": "Tétlen",
+    "Ignore": "Ignore",
     "Ignore Patterns": "Figyelmen kívül hagyás",
     "Ignore Permissions": "Jogosultságok figyelmen kívül hagyása",
     "Incoming Rate Limit (KiB/s)": "Bejövő sebesség korlát (KIB/mp)",
     "Introducer": "Bevezető",
     "Inversion of the given condition (i.e. do not exclude)": "A feltétel ellentéte (pl. ki nem hagyás)",
     "Keep Versions": "Megtartott verziók",
+    "Last File Synced": "Utolsó szinkronizált fájl",
     "Last seen": "Utoljára látva",
+    "Later": "Later",
     "Latest Release": "Utolsó kiadás",
     "Local Discovery": "Helyi felfedezés",
     "Local State": "Helyi állapot",
     "Maximum Age": "Maximális kor",
     "Multi level wildcard (matches multiple directory levels)": "Több szintű helyettesítő karakter (több könyvtár szintre érvényesül)",
     "Never": "Soha",
+    "New Device": "New Device",
+    "New Folder": "New Folder",
     "No": "Nem",
     "No File Versioning": "Nincs fájl verziózás",
     "Notice": "Megjegyzés",
@@ -80,11 +93,17 @@
     "Restart": "Újraindítás",
     "Restart Needed": "Újraindítás szükséges",
     "Restarting": "Újraindulás",
+    "Reused": "Újrafelhasználva",
     "Save": "Mentés",
     "Scanning": "Átnézés",
     "Select the devices to share this folder with.": "Válaszd ki az eszközöket amelyekkel meg szeretnéd osztani a mappát",
+    "Select the folders to share with this device.": "Válaszd ki a mappákat amiket meg szeretnél osztani ezzel az eszközzel",
     "Settings": "Beállítások",
+    "Share": "Share",
+    "Share Folder": "Share Folder",
+    "Share Folders With Device": "Mappák megosztása az eszközzel",
     "Share With Devices": "Megosztás más eszközzel",
+    "Share this folder?": "Share this folder?",
     "Shared With": "Megosztva ezekkel:",
     "Short identifier for the folder. Must be the same on all cluster devices.": "Rövid azonosító. Minden megosztott eszközön azonosnak kell lennie.",
     "Show ID": "Azonosító mutatása",
@@ -106,6 +125,7 @@
     "Syncthing is restarting.": "Syncthing újraindul",
     "Syncthing is upgrading.": "Syncthing frissül",
     "Syncthing seems to be down, or there is a problem with your Internet connection. Retrying…": "Úgy tűnik, hogy a Syncthing nem működik, vagy valami probléma van az hálózati kapcsolattal. Újra próbálom...",
+    "Syncthing seems to be experiencing a problem processing your request. Please refresh the page or restart Syncthing if the problem persists.": "Syncthing seems to be experiencing a problem processing your request. Please reload your browser or restart Syncthing if the problem persists.",
     "The aggregated statistics are publicly available at {%url%}.": "Az összevont statisztikák nyilvánosan elérhetők a {{url}} címen.",
     "The configuration has been saved but not activated. Syncthing must restart to activate the new configuration.": "A beállítások elmentésre kerültek, de nem lettek aktiválva. Indítsd újra a Syncthing-et, hogy aktiváld őket.",
     "The device ID cannot be blank.": "Az eszköz azonosító nem lehet üres.",
@@ -124,6 +144,8 @@
     "The rescan interval must be a non-negative number of seconds.": "Az átnézési intervallum nullánál nagyobb másodperc érték kell legyen",
     "The rescan interval must be at least 5 seconds.": "Az átnézési intervallumnak legalább 5 másodpercnek kell lennie.",
     "Unknown": "Ismeretlen",
+    "Unshared": "Nincs megosztva",
+    "Unused": "Nincs használatban",
     "Up to Date": "Friss",
     "Upgrade To {%version%}": "Frissítés a {{version}} verzióra",
     "Upgrading": "Frissítés",
@@ -138,5 +160,6 @@
     "Yes": "Igen",
     "You must keep at least one version.": "Legalább egy verziót meg kell tartanod",
     "full documentation": "teljes dokumentáció",
-    "items": "tételek"
+    "items": "tételek",
+    "{%device%} wants to share folder \"{%folder%}\".": "{{device}} wants to share folder \"{{folder}}\"."
 }

gui/assets/lang/lang-it.json

@@ -1,8 +1,10 @@
 {
     "API Key": "Chiave API",
     "About": "Informazioni",
+    "Add": "Aggiungi",
     "Add Device": "Aggiungi Dispositivo",
     "Add Folder": "Aggiungi Cartella",
+    "Add new folder?": "Aggiungere una nuova cartella?",
     "Address": "Indirizzo",
     "Addresses": "Indirizzi",
     "Allow Anonymous Usage Reporting?": "Abilitare Statistiche Anonime di Utilizzo?",
@@ -15,14 +17,19 @@
     "Comment, when used at the start of a line": "Per commentare, va inserito all'inizio di una riga",
     "Compression is recommended in most setups.": "La compressione è raccomandata nella maggior parte delle configurazioni.",
     "Connection Error": "Errore di Connessione",
+    "Copied from elsewhere": "Copiato da qualche altra parte",
+    "Copied from original": "Copiato dall'originale",
     "Copyright © 2014 Jakob Borg and the following Contributors:": "Copyright © 2014 Jakob Borg e i seguenti Collaboratori:",
     "Delete": "Elimina",
     "Device ID": "ID Dispositivo",
     "Device Identification": "Identificazione Dispositivo",
     "Device Name": "Nome Dispositivo",
+    "Device {%device%} ({%address%}) wants to connect. Add new device?": "Il dispositivo {{device}} ({{address}}) chiede di connettersi. Aggiungere il nuovo dispositivo?",
     "Disconnected": "Disconnesso",
     "Documentation": "Documentazione",
     "Download Rate": "Velocità Download",
+    "Downloaded": "Scaricato",
+    "Downloading": "Sto scaricando",
     "Edit": "Modifica",
     "Edit Device": "Modifica Dispositivo",
     "Edit Folder": "Modifica Cartella",
@@ -38,6 +45,7 @@
     "Folder ID": "ID Cartella",
     "Folder Master": "Cartella Principale",
     "Folder Path": "Percorso Cartella",
+    "Folders": "Cartelle",
     "GUI Authentication Password": "Password di Autenticazione dell'Utente",
     "GUI Authentication User": "Utente dell'Interfaccia Grafica",
     "GUI Listen Addresses": "Indirizzi dell'Interfaccia Grafica",
@@ -46,19 +54,24 @@
     "Global Discovery Server": "Server di Ricerca Globale",
     "Global State": "Stato Globale",
     "Idle": "Inattivo",
+    "Ignore": "Ignora",
     "Ignore Patterns": "Schemi Esclusione File",
     "Ignore Permissions": "Ignora Permessi",
     "Incoming Rate Limit (KiB/s)": "Limite Velocità in Ingresso (KiB/s)",
     "Introducer": "Introduttore",
     "Inversion of the given condition (i.e. do not exclude)": "Inversione della condizione indicata (ad es. non escludere)",
     "Keep Versions": "Versioni Mantenute",
+    "Last File Synced": "Ultimo File Sincronizzato",
     "Last seen": "Ultima connessione",
+    "Later": "Più Tardi",
     "Latest Release": "Ultima Versione",
     "Local Discovery": "Individuazione Locale",
     "Local State": "Stato Locale",
     "Maximum Age": "Durata Massima",
     "Multi level wildcard (matches multiple directory levels)": "Metacarattere multi-livello (corrisponde alle cartelle e alle sotto-cartelle)",
     "Never": "Mai",
+    "New Device": "Nuovo Dispositivo",
+    "New Folder": "Nuova Cartella",
     "No": "No",
     "No File Versioning": "Nessun Controllo Versione",
     "Notice": "Avviso",
@@ -80,11 +93,17 @@
     "Restart": "Riavvia",
     "Restart Needed": "Riavvio Necessario",
     "Restarting": "Riavvio",
+    "Reused": "Riutilizzato",
     "Save": "Salva",
     "Scanning": "Scansione in corso",
     "Select the devices to share this folder with.": "Seleziona i dispositivi con i quali condividere questa cartella.",
+    "Select the folders to share with this device.": "Seleziona le cartelle da condividere con questo dispositivo.",
     "Settings": "Impostazioni",
+    "Share": "Condividi",
+    "Share Folder": "Condividi la Cartella",
+    "Share Folders With Device": "Condividi Cartelle con il Dispositivo",
     "Share With Devices": "Condividi con i Dispositivi",
+    "Share this folder?": "Vuoi condividere questa cartella?",
     "Shared With": "Condiviso Con",
     "Short identifier for the folder. Must be the same on all cluster devices.": "Breve identificatore della cartella. Deve essere lo stesso su tutti i dispositivi del cluster.",
     "Show ID": "Mostra ID",
@@ -106,6 +125,7 @@
     "Syncthing is restarting.": "Riavvio di Syncthing in corso.",
     "Syncthing is upgrading.": "Aggiornamento di Syncthing in corso.",
     "Syncthing seems to be down, or there is a problem with your Internet connection. Retrying…": "Syncthing sembra inattivo, oppure c'è un problema con la tua connessione a Internet. Nuovo tentativo…",
+    "Syncthing seems to be experiencing a problem processing your request. Please refresh the page or restart Syncthing if the problem persists.": "Syncthing seems to be experiencing a problem processing your request. Please reload your browser or restart Syncthing if the problem persists.",
     "The aggregated statistics are publicly available at {%url%}.": "Le statistiche aggregate sono disponibili pubblicamente su {{url}}.",
     "The configuration has been saved but not activated. Syncthing must restart to activate the new configuration.": "La configurazione è stata salvata ma non attivata. Devi riavviare Syncthing per attivare la nuova configurazione.",
     "The device ID cannot be blank.": "L'ID del dispositivo non può essere vuoto.",
@@ -121,9 +141,11 @@
     "The maximum time to keep a version (in days, set to 0 to keep versions forever).": "La durata massima di una versione (in giorni, imposta a 0 per mantenere le versioni per sempre).",
     "The number of old versions to keep, per file.": "Il numero di vecchie versioni da mantenere, per file.",
     "The number of versions must be a number and cannot be blank.": "Il numero di versioni dev'essere un numero e non può essere vuoto.",
-    "The rescan interval must be a non-negative number of seconds.": "The rescan interval must be a non-negative number of seconds.",
+    "The rescan interval must be a non-negative number of seconds.": "L'intervallo di scansione deve essere un numero superiore a zero secondi.",
     "The rescan interval must be at least 5 seconds.": "L'intervallo di scansione non può essere inferiore a 5 secondi.",
     "Unknown": "Sconosciuto",
+    "Unshared": "Non Condiviso",
+    "Unused": "Non Utilizzato",
     "Up to Date": "Sincronizzato",
     "Upgrade To {%version%}": "Aggiorna alla {{version}}",
     "Upgrading": "Aggiornamento",
@@ -138,5 +160,6 @@
     "Yes": "Sì",
     "You must keep at least one version.": "È necessario mantenere almeno una versione.",
     "full documentation": "documentazione completa",
-    "items": "elementi"
+    "items": "elementi",
+    "{%device%} wants to share folder \"{%folder%}\".": "{{device}} vuole condividere la cartella \"{{folder}}\"."
 }

gui/assets/lang/lang-lt.json

@@ -1,8 +1,10 @@
 {
     "API Key": "API raktas",
     "About": "Apie programą",
+    "Add": "Add",
     "Add Device": "Pridėti įrenginį",
     "Add Folder": "Pridėti aplanką",
+    "Add new folder?": "Add new folder?",
     "Address": "Adresas",
     "Addresses": "Adresai",
     "Allow Anonymous Usage Reporting?": "Siųsti anonimišką vartojimo ataskaitą?",
@@ -15,14 +17,19 @@
     "Comment, when used at the start of a line": "Komentaras naudojamas naujoje eilutėje",
     "Compression is recommended in most setups.": "Daugumoje atvejų spaudimas rekomenduojamas.",
     "Connection Error": "Susijungimo klaida",
+    "Copied from elsewhere": "Nukopijuota iš betkur",
+    "Copied from original": "Nukopijuota iš originalo",
     "Copyright © 2014 Jakob Borg and the following Contributors:": "Visos teisės saugomos © 2014 Jakob Borg ir šių bendraautorių:",
     "Delete": "Trinti",
     "Device ID": "Įrenginio ID",
     "Device Identification": "Įrenginio identifikacija",
     "Device Name": "Įrenginio pavadinimas",
+    "Device {%device%} ({%address%}) wants to connect. Add new device?": "Device {{device}} ({{address}}) wants to connect. Add new device?",
     "Disconnected": "Atsijungęs",
     "Documentation": "Aprašymas",
     "Download Rate": "Parsisiuntimo greitis",
+    "Downloaded": "Parsisiųstas",
+    "Downloading": "Siunčiama",
     "Edit": "Redaguoti",
     "Edit Device": "Keisti įrenginį",
     "Edit Folder": "Keisti aplanką",
@@ -38,6 +45,7 @@
     "Folder ID": "Aplanko ID",
     "Folder Master": "Aplanko vadovas",
     "Folder Path": "Kelias iki apkanko",
+    "Folders": "Aplankai",
     "GUI Authentication Password": "Valdymo skydelio slaptažodis",
     "GUI Authentication User": "Valdymo skydelio vartotojo vardas",
     "GUI Listen Addresses": "Valdymo skydelio adresas",
@@ -46,19 +54,24 @@
     "Global Discovery Server": "Visuotinio matomumo serveris",
     "Global State": "Visuotinė būsena",
     "Idle": "Laisvas",
+    "Ignore": "Ignore",
     "Ignore Patterns": "Nepaisyti šablonų",
     "Ignore Permissions": "Nepaisyti failų prieigos leidimų",
     "Incoming Rate Limit (KiB/s)": "Įeinančio srauto maksimalus greitis (KiB/s)",
     "Introducer": "Supažindintojas",
     "Inversion of the given condition (i.e. do not exclude)": "Apversti sąlygas (pvz.: nenustoti naudoti)",
     "Keep Versions": "Saugojamų versijų kiekis",
+    "Last File Synced": "Paskutinis gautas failas",
     "Last seen": "Paskutinį kartą matytas",
+    "Later": "Later",
     "Latest Release": "Paskutinė versija",
     "Local Discovery": "Vietinis matomumas",
     "Local State": "Vietinė būsena",
     "Maximum Age": "Maksimalus amžius",
     "Multi level wildcard (matches multiple directory levels)": "Keletos lygių pakaitos (atitinka keletą direktorijų lygių)",
     "Never": "Niekada",
+    "New Device": "New Device",
+    "New Folder": "New Folder",
     "No": "Ne",
     "No File Versioning": "Nėra versijų valdymo",
     "Notice": "Įspėjimas",
@@ -80,11 +93,17 @@
     "Restart": "Perleisti",
     "Restart Needed": "Reikalingas perleidimas",
     "Restarting": "Persileidžia",
+    "Reused": "Pakartotinas",
     "Save": "Išsaugoti",
     "Scanning": "Skenuojama",
     "Select the devices to share this folder with.": "Pasirinkite įrenginius, su kuriais dalinsitės šį aplanką.",
+    "Select the folders to share with this device.": "Pasirinkite aplankus kuriais norite dalintis su šiuo įrenginiu.",
     "Settings": "Nustatymai",
+    "Share": "Share",
+    "Share Folder": "Share Folder",
+    "Share Folders With Device": "Dalintis aplankalais su šiuo įrenginiu",
     "Share With Devices": "Dalintis su įrenginiais",
+    "Share this folder?": "Share this folder?",
     "Shared With": "Dalinamasi su",
     "Short identifier for the folder. Must be the same on all cluster devices.": "Trumpas aplanko identifikatorius. Privalo būti toks pat visuose įrenginiuose.",
     "Show ID": "Rodyti ID",
@@ -106,11 +125,12 @@
     "Syncthing is restarting.": "Syncthing perleidžiamas",
     "Syncthing is upgrading.": "Syncthing atsinaujina.",
     "Syncthing seems to be down, or there is a problem with your Internet connection. Retrying…": "Syncthing  išjungta arba problemos su Interneto ryšių. Bandoma iš naujo...",
+    "Syncthing seems to be experiencing a problem processing your request. Please refresh the page or restart Syncthing if the problem persists.": "Syncthing seems to be experiencing a problem processing your request. Please reload your browser or restart Syncthing if the problem persists.",
     "The aggregated statistics are publicly available at {%url%}.": "Naudojimosi ataskaitą galite peržiūrėti adresu: {{url}}.",
     "The configuration has been saved but not activated. Syncthing must restart to activate the new configuration.": "Nauji nustatymai išsaugoti, bet neaktyvuoti. Perleiskite Syncthing programą iš naujo norėdami įgalinti naujus nustatymus.",
     "The device ID cannot be blank.": "Įrenginio ID negali būti tuščias.",
-    "The device ID to enter here can be found in the \"Edit > Show ID\" dialog on the other device. Spaces and dashes are optional (ignored).": "Įrenginio ID, kurį čia reikia įvesti, gali būti rastas „Keisti > Rodyti vardą“ dialoge kitame įrenginyje. Tarpai ir brūkšneliai nebūtini (ignoruojami).",
-    "The encrypted usage report is sent daily. It is used to track common platforms, folder sizes and app versions. If the reported data set is changed you will be prompted with this dialog again.": "Kas dieną siunčiama šifruota naudojimo ataskaita. Ji naudojama sekti, kokios platformos naudojamos, aplankų dydžius ir programų versijas. Jei siunčiamų duomenų tipas pasikeis, šis dialogas bus parodytas iš naujo.",
+    "The device ID to enter here can be found in the \"Edit > Show ID\" dialog on the other device. Spaces and dashes are optional (ignored).": "Įrenginio ID, kurį čia reikia įvesti, gali būti rastas „Redaguoti > Rodyti ID“ dialoge kitame įrenginyje. Tarpai ir brūkšneliai nebūtini (ignoruojami).",
+    "The encrypted usage report is sent daily. It is used to track common platforms, folder sizes and app versions. If the reported data set is changed you will be prompted with this dialog again.": "Kas dieną siunčiama šifruota naudojimo ataskaita. Ji naudojama sekti, kokios platformos naudojamos, aplankų dydžius ir programų versijas. Jei siunčiamų duomenų turinys pasikeis, šis dialogas bus parodytas iš naujo.",
     "The entered device ID does not look valid. It should be a 52 or 56 character string consisting of letters and numbers, with spaces and dashes being optional.": "Įvestas neteisingas įrenginio ID. Turi būti 52 ar 56 simbolių eilutė su raidėmis ir skaičiais kuriuos galima atskirti tarpu arba brūkšneliu.",
     "The folder ID cannot be blank.": "Aplanko ID negali būti tuščias.",
     "The folder ID must be a short identifier (64 characters or less) consisting of letters, numbers and the dot (.), dash (-) and underscode (_) characters only.": "Aplanko vardas negali būti ilgesnis nei 64 simboliai. Galima naudoti tik raides ir skaičius bet tašką (.), brūkšnelį (-) ir pabraukimą (_).",
@@ -124,6 +144,8 @@
     "The rescan interval must be a non-negative number of seconds.": "Nuskaitymo dažnis negali būti neigiamas skaičius.",
     "The rescan interval must be at least 5 seconds.": "Nuskaityti galima nedažniau nei kas 5 sekundes.",
     "Unknown": "Nežinoma",
+    "Unshared": "Nesidalinama",
+    "Unused": "Nenaudojamas",
     "Up to Date": "Atnaujinta",
     "Upgrade To {%version%}": "Atnaujinti į  {{version}}",
     "Upgrading": "Atnaujinama",
@@ -138,5 +160,6 @@
     "Yes": "Taip",
     "You must keep at least one version.": "Būtina saugoti bent vieną versiją.",
     "full documentation": "pilna dokumentacija",
-    "items": "įrašai"
+    "items": "įrašai",
+    "{%device%} wants to share folder \"{%folder%}\".": "{{device}} wants to share folder \"{{folder}}\"."
 }

gui/assets/lang/lang-nb.json

@@ -1,8 +1,10 @@
 {
     "API Key": "API-nøkkel",
     "About": "Om",
+    "Add": "Add",
     "Add Device": "Legg Til Enhet",
     "Add Folder": "Legg Til Mappe",
+    "Add new folder?": "Add new folder?",
     "Address": "Adresse",
     "Addresses": "Adresser",
     "Allow Anonymous Usage Reporting?": "Tillat Anonym Innsamling Av Brukerdata?",
@@ -15,14 +17,19 @@
     "Comment, when used at the start of a line": "Kommentar, når det blir brukt i starten av en linje.",
     "Compression is recommended in most setups.": "Komprimering er anbefalt i de fleste tilfeller.",
     "Connection Error": "Tilkoblingsfeil",
+    "Copied from elsewhere": "Copied from elsewhere",
+    "Copied from original": "Copied from original",
     "Copyright © 2014 Jakob Borg and the following Contributors:": "Copyright © 2014 Jakob Borg og følgende Bidragsytere:",
     "Delete": "Slett",
     "Device ID": "Enhet ID",
     "Device Identification": "Enhetskjennemerke",
     "Device Name": "Navn På Enhet",
+    "Device {%device%} ({%address%}) wants to connect. Add new device?": "Device {{device}} ({{address}}) wants to connect. Add new device?",
     "Disconnected": "Frakoblet",
     "Documentation": "Dokumentasjon",
     "Download Rate": "Nedlastingsrate",
+    "Downloaded": "Downloaded",
+    "Downloading": "Downloading",
     "Edit": "Rediger",
     "Edit Device": "Rediger Enhet",
     "Edit Folder": "Rediger Mappe",
@@ -38,6 +45,7 @@
     "Folder ID": "Mappe ID",
     "Folder Master": "Styrende Mappe",
     "Folder Path": "Mappeplassering",
+    "Folders": "Folders",
     "GUI Authentication Password": "GUI Passord",
     "GUI Authentication User": "GUI Bruker",
     "GUI Listen Addresses": "GUI Lytteadresse",
@@ -46,19 +54,24 @@
     "Global Discovery Server": "Global Søkemotor",
     "Global State": "Global Tilstand",
     "Idle": "Pause",
+    "Ignore": "Ignore",
     "Ignore Patterns": "Utelatelsesmønster",
     "Ignore Permissions": "Ignorer Tilgangsbit",
     "Incoming Rate Limit (KiB/s)": "Innkommende Hastighetsbegrensning (KiB/s)",
     "Introducer": "Introduktør",
     "Inversion of the given condition (i.e. do not exclude)": "Invers av den gitte tilstanden (t.d. ikke ekskluder)",
     "Keep Versions": "Behold Versjoner",
+    "Last File Synced": "Last File Synced",
     "Last seen": "Sist sett",
+    "Later": "Later",
     "Latest Release": "Nyeste Versjon",
     "Local Discovery": "Lokal Søking",
     "Local State": "Lokal Tilstand",
     "Maximum Age": "Maksimal Levetid",
     "Multi level wildcard (matches multiple directory levels)": "Multinivåsøk (søker på flere mappenivå)",
     "Never": "Aldri",
+    "New Device": "New Device",
+    "New Folder": "New Folder",
     "No": "Nei",
     "No File Versioning": "Ingen Versjonskontroll",
     "Notice": "Merknad",
@@ -80,11 +93,17 @@
     "Restart": "Omstart",
     "Restart Needed": "Omstart Kreves",
     "Restarting": "Starter På Ny",
+    "Reused": "Reused",
     "Save": "Lagre",
     "Scanning": "Skanner",
     "Select the devices to share this folder with.": "Velg enhetene du vil dele denne mappen med.",
+    "Select the folders to share with this device.": "Select the folders to share with this device.",
     "Settings": "Innstillinger",
+    "Share": "Share",
+    "Share Folder": "Share Folder",
+    "Share Folders With Device": "Share Folders With Device",
     "Share With Devices": "Del Med Enheter",
+    "Share this folder?": "Share this folder?",
     "Shared With": "Del Med",
     "Short identifier for the folder. Must be the same on all cluster devices.": "Kort kjennemerke på mappen. Må være det samme på alle enheter i en gruppe.",
     "Show ID": "Vis ID",
@@ -106,6 +125,7 @@
     "Syncthing is restarting.": "Syncthing starter på ny.",
     "Syncthing is upgrading.": "Syncthing oppgraderer.",
     "Syncthing seems to be down, or there is a problem with your Internet connection. Retrying…": "Syncthing ser ut til å være nede, eller så er det et problem med nettforbindelsen din. Prøver på ny …",
+    "Syncthing seems to be experiencing a problem processing your request. Please refresh the page or restart Syncthing if the problem persists.": "Syncthing seems to be experiencing a problem processing your request. Please reload your browser or restart Syncthing if the problem persists.",
     "The aggregated statistics are publicly available at {%url%}.": "Samlet statistikk er åpent tilgjengelig på {{url}}.",
     "The configuration has been saved but not activated. Syncthing must restart to activate the new configuration.": "Innstillingene har blitt lagret men ikke aktivert. Syncthing må starte på ny for å aktivere de nye innstillingene.",
     "The device ID cannot be blank.": "Enhets-ID kan ikke være tom.",
@@ -124,6 +144,8 @@
     "The rescan interval must be a non-negative number of seconds.": "Antall sekund i skanneintervallet kan ikke være negativt.",
     "The rescan interval must be at least 5 seconds.": "Skanneintervallet må være minst 5 sekund.",
     "Unknown": "Ukjent",
+    "Unshared": "Unshared",
+    "Unused": "Unused",
     "Up to Date": "Oppdatert",
     "Upgrade To {%version%}": "Oppgrader Til {{version}}",
     "Upgrading": "Oppgraderer",
@@ -138,5 +160,6 @@
     "Yes": "Ja",
     "You must keep at least one version.": "Du må beholde minst én versjon",
     "full documentation": "all dokumentasjon",
-    "items": "element"
+    "items": "element",
+    "{%device%} wants to share folder \"{%folder%}\".": "{{device}} wants to share folder \"{{folder}}\"."
 }

gui/assets/lang/lang-nl.json

@@ -1,8 +1,10 @@
 {
     "API Key": "API-sleutel",
     "About": "Over",
+    "Add": "Toevoegen",
     "Add Device": "Toestel toevoegen",
     "Add Folder": "Folder toevoegen",
+    "Add new folder?": "Nieuwe folder toevoegen?",
     "Address": "Adres",
     "Addresses": "Adressen",
     "Allow Anonymous Usage Reporting?": "Bijhouden van anonieme gebruikers statistieken toestaan?",
@@ -15,14 +17,19 @@
     "Comment, when used at the start of a line": "Commentaar, indien gebruikt aan het begin van de lijn",
     "Compression is recommended in most setups.": "Gegevenscompressie is aan te raden in de meeste situaties.",
     "Connection Error": "Verbindingsfout",
+    "Copied from elsewhere": "Van elders gekopieerd",
+    "Copied from original": "Gekopieerd van het origineel",
     "Copyright © 2014 Jakob Borg and the following Contributors:": "Copyright © 2014 Jakob Borg en de onderstaande bijdragers:",
     "Delete": "Verwijderen",
     "Device ID": "Toestel ID",
     "Device Identification": "Toestel identificatie",
     "Device Name": "Naam toestel",
+    "Device {%device%} ({%address%}) wants to connect. Add new device?": "Het toestel {{device}} ({{address}}) wenst te verbinden. Dit toestel toevoegen?",
     "Disconnected": "Niet Verbonden",
     "Documentation": "Documentatie",
     "Download Rate": "Downloadsnelheid",
+    "Downloaded": "Gedownload",
+    "Downloading": "Bezig met downloaden",
     "Edit": "Bewerk",
     "Edit Device": "Toestel aanpassen",
     "Edit Folder": "Folder aanpassen",
@@ -38,6 +45,7 @@
     "Folder ID": "Folder ID",
     "Folder Master": "Hoofdfolder",
     "Folder Path": "Locatie folder",
+    "Folders": "Folders",
     "GUI Authentication Password": "GUI Authentificatie Wachtwoord",
     "GUI Authentication User": "GUI Authentificatie Gebruikersnaam",
     "GUI Listen Addresses": "GUI Inkomend adres",
@@ -46,19 +54,24 @@
     "Global Discovery Server": "Globale zoekserver",
     "Global State": "Globale status",
     "Idle": "Inactief",
+    "Ignore": "Negeren",
     "Ignore Patterns": "Te negeren patronen",
     "Ignore Permissions": "Rechten negeren",
     "Incoming Rate Limit (KiB/s)": "Download snelheidslimiet (KiB/s)",
     "Introducer": "Introductietoestel",
     "Inversion of the given condition (i.e. do not exclude)": "Inversie van de gegeven voorwaarde (bv. niet uitsluiten)",
     "Keep Versions": "Versies behouden",
+    "Last File Synced": "Laatste Gesynchroniseerde Bestand",
     "Last seen": "Laatst gezien op",
+    "Later": "Later",
     "Latest Release": "Laatste uitgave",
     "Local Discovery": "Lokaal zoeken",
     "Local State": "Lokale status",
     "Maximum Age": "Maximum leeftijd",
     "Multi level wildcard (matches multiple directory levels)": "Wildcard op meerder niveaus (toepasbaar op meerdere niveaus van folders)",
     "Never": "Nooit",
+    "New Device": "Nieuw Toestel",
+    "New Folder": "Nieuwe Folder",
     "No": "Nee",
     "No File Versioning": "Geen versiebeheer",
     "Notice": "Notificatie",
@@ -80,11 +93,17 @@
     "Restart": "Herstart",
     "Restart Needed": "Herstart nodig",
     "Restarting": "Herstarten",
+    "Reused": "Hergebruikt",
     "Save": "Bewaar",
     "Scanning": "Aan het zoeken",
     "Select the devices to share this folder with.": "Selecteer de toestellen om deze folder mee te delen.",
+    "Select the folders to share with this device.": "Selecteer de folders om met dit toestel te delen.",
     "Settings": "Instellingen",
+    "Share": "Delen",
+    "Share Folder": "Folder Delen",
+    "Share Folders With Device": "Folders delen met toestellen",
     "Share With Devices": "Delen met toestellen",
+    "Share this folder?": "Deze folder delen?",
     "Shared With": "Gedeeld met",
     "Short identifier for the folder. Must be the same on all cluster devices.": "Korte aanduiding voor deze folder. Moet dezelfde zijn op alle toestellen in de cluster.",
     "Show ID": "Toon ID",
@@ -106,6 +125,7 @@
     "Syncthing is restarting.": "Syncthing is aan het herstarten.",
     "Syncthing is upgrading.": "Syncthing is aan het upgraden.",
     "Syncthing seems to be down, or there is a problem with your Internet connection. Retrying…": "Syncthing lijkt afgesloten te zijn, of er is een verbindingsprobleem met het internet. Nieuwe poging....",
+    "Syncthing seems to be experiencing a problem processing your request. Please refresh the page or restart Syncthing if the problem persists.": "Syncthing heeft problemen bij het verwerken van je vraag. Gelieve de pagina opnieuw te laden of Syncthing te herstarten wanneer het probleem blijft opduiken.",
     "The aggregated statistics are publicly available at {%url%}.": "The verzamelde statistieken zijn publiek beschikbaar op {{url}}",
     "The configuration has been saved but not activated. Syncthing must restart to activate the new configuration.": "De configuratie is opslagen maar nog niet actief. Syncthing moet opnieuw opgestart worden om de nieuwe configuratie te activeren.",
     "The device ID cannot be blank.": "Het toestel ID mag niet leeg zijn.",
@@ -124,6 +144,8 @@
     "The rescan interval must be a non-negative number of seconds.": "De scanfrequentie moet een positief getal in seconden zijn.",
     "The rescan interval must be at least 5 seconds.": "De scanfrequentie moet minimaal 5 seconden zijn.",
     "Unknown": "Onbekend",
+    "Unshared": "Niet gedeeld",
+    "Unused": "Ongebruikt",
     "Up to Date": "Gesynchroniseerd",
     "Upgrade To {%version%}": "Upgrade naar {{version}}",
     "Upgrading": "Bezig met upgrade",
@@ -138,5 +160,6 @@
     "Yes": "Ja",
     "You must keep at least one version.": "Minstens 1 versie moet bewaard blijven.",
     "full documentation": "volledige documentatie",
-    "items": "objecten"
+    "items": "objecten",
+    "{%device%} wants to share folder \"{%folder%}\".": "{{device}} wil de folder \"{{folder}}\" delen."
 }

gui/assets/lang/lang-nn.json

@@ -1,8 +1,10 @@
 {
     "API Key": "API-nøkkel",
     "About": "Om",
+    "Add": "Add",
     "Add Device": "Legg Til Eining",
     "Add Folder": "Legg Til Mappe",
+    "Add new folder?": "Add new folder?",
     "Address": "Adresse",
     "Addresses": "Adresser",
     "Allow Anonymous Usage Reporting?": "Tillat Anonym Innsamling Av Brukardata?",
@@ -15,14 +17,19 @@
     "Comment, when used at the start of a line": "Kommentar, når det vert brukt i starten av ei linje.",
     "Compression is recommended in most setups.": "Komprimering er tilrådd i dei fleste høve.",
     "Connection Error": "Tilkoplingsfeil",
+    "Copied from elsewhere": "Copied from elsewhere",
+    "Copied from original": "Copied from original",
     "Copyright © 2014 Jakob Borg and the following Contributors:": "Copyright © 2014 Jakob Borg og følgjande Bidragsytarar:",
     "Delete": "Slett",
     "Device ID": "Eining ID",
     "Device Identification": "Einingskjennemerke",
     "Device Name": "Namn På Eining",
+    "Device {%device%} ({%address%}) wants to connect. Add new device?": "Device {{device}} ({{address}}) wants to connect. Add new device?",
     "Disconnected": "Fråkopla",
     "Documentation": "Dokumentasjon",
     "Download Rate": "Nedlastingsrate",
+    "Downloaded": "Downloaded",
+    "Downloading": "Downloading",
     "Edit": "Rediger",
     "Edit Device": "Rediger Eining",
     "Edit Folder": "Rediger Mappe",
@@ -38,6 +45,7 @@
     "Folder ID": "Mappe ID",
     "Folder Master": "Styrande Mappe",
     "Folder Path": "Mappeplassering",
+    "Folders": "Folders",
     "GUI Authentication Password": "GUI Passord",
     "GUI Authentication User": "GUI Brukar",
     "GUI Listen Addresses": "GUI Lytteadresse",
@@ -46,19 +54,24 @@
     "Global Discovery Server": "Global Søkjemotor",
     "Global State": "Global Tilstand",
     "Idle": "Pause",
+    "Ignore": "Ignore",
     "Ignore Patterns": "Utelatingsmønster",
     "Ignore Permissions": "Ignorer Tilgangsbit",
     "Incoming Rate Limit (KiB/s)": "Innkomande Hastigheitsgrense (KiB/s)",
     "Introducer": "Introduktør",
     "Inversion of the given condition (i.e. do not exclude)": "Invers av den gitte tilstanden (t.d. ikkje ekskluder)",
     "Keep Versions": "Behald Versjonar",
+    "Last File Synced": "Last File Synced",
     "Last seen": "Sist sett",
+    "Later": "Later",
     "Latest Release": "Nyaste Versjon",
     "Local Discovery": "Lokal Søking",
     "Local State": "Lokal Tilstand",
     "Maximum Age": "Maksimal Levetid",
     "Multi level wildcard (matches multiple directory levels)": "Multinivåsøk (søkjer på fleire mappenivå)",
     "Never": "Aldri",
+    "New Device": "New Device",
+    "New Folder": "New Folder",
     "No": "Nei",
     "No File Versioning": "Ingen Versjonskontroll",
     "Notice": "Merknad",
@@ -80,11 +93,17 @@
     "Restart": "Omstart",
     "Restart Needed": "Omstart Trengs",
     "Restarting": "Startar På Ny",
+    "Reused": "Reused",
     "Save": "Lagre",
     "Scanning": "Skannar",
     "Select the devices to share this folder with.": "Vel einingane du vil dela denne mappa med.",
+    "Select the folders to share with this device.": "Select the folders to share with this device.",
     "Settings": "Innstillingar",
+    "Share": "Share",
+    "Share Folder": "Share Folder",
+    "Share Folders With Device": "Share Folders With Device",
     "Share With Devices": "Del Med Einingar",
+    "Share this folder?": "Share this folder?",
     "Shared With": "Delt Med",
     "Short identifier for the folder. Must be the same on all cluster devices.": "Kort kjennemerke på mappa. Må vera det same på alle einingar i ei gruppe.",
     "Show ID": "Vis ID",
@@ -106,6 +125,7 @@
     "Syncthing is restarting.": "Syncthing startar på ny.",
     "Syncthing is upgrading.": "Syncthing oppgraderer.",
     "Syncthing seems to be down, or there is a problem with your Internet connection. Retrying…": "Syncthing ser ut til å vera nede, eller så er det eit problem med nettilkoplinga di. Prøvar på ny …",
+    "Syncthing seems to be experiencing a problem processing your request. Please refresh the page or restart Syncthing if the problem persists.": "Syncthing seems to be experiencing a problem processing your request. Please reload your browser or restart Syncthing if the problem persists.",
     "The aggregated statistics are publicly available at {%url%}.": "Samla statistikk er opent tilgjengeleg på {{url}}.",
     "The configuration has been saved but not activated. Syncthing must restart to activate the new configuration.": "Instillingane har blitt lagra men ikkje aktivert. Syncthing må starta på ny for å aktivera dei nye instillingane.",
     "The device ID cannot be blank.": "Eining ID kan ikkje vera tom.",
@@ -124,6 +144,8 @@
     "The rescan interval must be a non-negative number of seconds.": "Talet på sekund i skanneintervallet kan ikkje vera negativt.",
     "The rescan interval must be at least 5 seconds.": "Skanneintervallet må vera minst 5 sekund.",
     "Unknown": "Ukjent",
+    "Unshared": "Unshared",
+    "Unused": "Unused",
     "Up to Date": "Oppdatert",
     "Upgrade To {%version%}": "Oppgrader Til {{version}}",
     "Upgrading": "Oppgraderer",
@@ -138,5 +160,6 @@
     "Yes": "Ja",
     "You must keep at least one version.": "Du må behalda minst ein versjon.",
     "full documentation": "all dokumentasjon",
-    "items": "element"
+    "items": "element",
+    "{%device%} wants to share folder \"{%folder%}\".": "{{device}} wants to share folder \"{{folder}}\"."
 }

gui/assets/lang/lang-pl.json

@@ -1,8 +1,10 @@
 {
     "API Key": "Klucz API",
     "About": "O Syncthing",
+    "Add": "Add",
     "Add Device": "Dodaj urządzenie",
     "Add Folder": "Dodaj folder",
+    "Add new folder?": "Add new folder?",
     "Address": "Adres",
     "Addresses": "Adresy",
     "Allow Anonymous Usage Reporting?": "Zezwalaj na anonimowe statystyki użycia",
@@ -15,14 +17,19 @@
     "Comment, when used at the start of a line": "Komentarz, jeżeli użyty na początku linii",
     "Compression is recommended in most setups.": "Kompresja jest zalecana w większości przypadków",
     "Connection Error": "Błąd połączenia",
+    "Copied from elsewhere": "Copied from elsewhere",
+    "Copied from original": "Copied from original",
     "Copyright © 2014 Jakob Borg and the following Contributors:": "Copyright © 2014 Jakob Borg i następujący współautorzy:",
     "Delete": "Usuń",
     "Device ID": "ID urządzenia",
     "Device Identification": "Identyfikator urządzenia",
     "Device Name": "Nazwa urządzenia",
+    "Device {%device%} ({%address%}) wants to connect. Add new device?": "Device {{device}} ({{address}}) wants to connect. Add new device?",
     "Disconnected": "Rozłączony",
     "Documentation": "Dokumentacja",
     "Download Rate": "Prędkość pobierania",
+    "Downloaded": "Downloaded",
+    "Downloading": "Downloading",
     "Edit": "Edytuj",
     "Edit Device": "Edytuj urządzenie",
     "Edit Folder": "Edytuj folder",
@@ -38,6 +45,7 @@
     "Folder ID": "ID folderu",
     "Folder Master": "Główny folder",
     "Folder Path": "Ścieżka folderu",
+    "Folders": "Folders",
     "GUI Authentication Password": "Hasło",
     "GUI Authentication User": "Użytkownik",
     "GUI Listen Addresses": "Adres nasłuchiwania",
@@ -46,19 +54,24 @@
     "Global Discovery Server": "Globalny serwer rozgłoszeniowy",
     "Global State": "Status globalny",
     "Idle": "Bezczynny",
+    "Ignore": "Ignore",
     "Ignore Patterns": "Wzorce ignorowania",
     "Ignore Permissions": "Ignoruj uprawnienia",
     "Incoming Rate Limit (KiB/s)": "Ograniczenie prędkości odbierania (KiB/s)",
     "Introducer": "Wprowadzający",
     "Inversion of the given condition (i.e. do not exclude)": "Odwrócenie podanego wzorca (np. nie wykluczaj)",
     "Keep Versions": "Zachowuj wersje",
+    "Last File Synced": "Last File Synced",
     "Last seen": "Ostatnio widziany",
+    "Later": "Later",
     "Latest Release": "Najnowsza wersja",
     "Local Discovery": "Lokalne odnajdywanie",
     "Local State": "Status lokalny",
     "Maximum Age": "Maksymalny wiek",
     "Multi level wildcard (matches multiple directory levels)": "Wieloznaczność na poziomie katalogów i plików (uwzględnia nazwy folderów i plików)",
     "Never": "Nigdy",
+    "New Device": "New Device",
+    "New Folder": "New Folder",
     "No": "Nie",
     "No File Versioning": "Bez wersjonowania pliku",
     "Notice": "Wskazówka",
@@ -80,11 +93,17 @@
     "Restart": "Uruchom ponownie",
     "Restart Needed": "Wymagane ponowne uruchomienie",
     "Restarting": "Uruchamianie ponowne",
+    "Reused": "Reused",
     "Save": "Zapisz",
     "Scanning": "Skanowanie",
     "Select the devices to share this folder with.": "Wybierz urządzenie, któremu udostępnić folder.",
+    "Select the folders to share with this device.": "Select the folders to share with this device.",
     "Settings": "Ustawienia",
+    "Share": "Share",
+    "Share Folder": "Share Folder",
+    "Share Folders With Device": "Share Folders With Device",
     "Share With Devices": "Udostępnij dla urządzenia",
+    "Share this folder?": "Share this folder?",
     "Shared With": "Współdzielony z",
     "Short identifier for the folder. Must be the same on all cluster devices.": "Krótki identyfikator folderu. Musi być taki sam na wszystkich urządzeniach.",
     "Show ID": "Pokaż ID",
@@ -106,6 +125,7 @@
     "Syncthing is restarting.": "Restart Syncthing",
     "Syncthing is upgrading.": "Aktualizowanie Syncthing",
     "Syncthing seems to be down, or there is a problem with your Internet connection. Retrying…": "Syncthing wydaje się być wyłączony lub jest problem z twoim połączeniem internetowym. Próbuje ponownie...",
+    "Syncthing seems to be experiencing a problem processing your request. Please refresh the page or restart Syncthing if the problem persists.": "Syncthing seems to be experiencing a problem processing your request. Please reload your browser or restart Syncthing if the problem persists.",
     "The aggregated statistics are publicly available at {%url%}.": "Zebrane statystyki są publicznie dostępna pod adresem {{url}}.",
     "The configuration has been saved but not activated. Syncthing must restart to activate the new configuration.": "Konfiguracja została zapisana lecz nie jest aktywna. Syncthing musi zostać zrestartowany aby aktywować nową konfiguracje.",
     "The device ID cannot be blank.": "ID urządzenia nie może być puste.",
@@ -124,6 +144,8 @@
     "The rescan interval must be a non-negative number of seconds.": "The rescan interval must be a non-negative number of seconds.",
     "The rescan interval must be at least 5 seconds.": "Interwał skanowania musi wynosić co najmniej 5 sekund.",
     "Unknown": "Nieznany",
+    "Unshared": "Unshared",
+    "Unused": "Unused",
     "Up to Date": "Aktualny",
     "Upgrade To {%version%}": "Aktualizuj do {{version}}",
     "Upgrading": "Aktualizowanie",
@@ -138,5 +160,6 @@
     "Yes": "Tak",
     "You must keep at least one version.": "Musisz posiadać przynajmniej jedną wersję",
     "full documentation": "pełna dokumentacja",
-    "items": "pozycji"
+    "items": "pozycji",
+    "{%device%} wants to share folder \"{%folder%}\".": "{{device}} wants to share folder \"{{folder}}\"."
 }

gui/assets/lang/lang-pt-PT.json

@@ -1,8 +1,10 @@
 {
     "API Key": "Chave da API",
     "About": "Acerca da aplicação",
+    "Add": "Adicionar",
     "Add Device": "Adicionar dispositivo",
     "Add Folder": "Adicionar pasta",
+    "Add new folder?": "Adicionar nova pasta?",
     "Address": "Endereço",
     "Addresses": "Endereços",
     "Allow Anonymous Usage Reporting?": "Permitir envio de relatórios anónimos de utilização?",
@@ -15,14 +17,19 @@
     "Comment, when used at the start of a line": "Comentário, quando usado no início de uma linha",
     "Compression is recommended in most setups.": "A compressão é recomendada na maior parte dos casos.",
     "Connection Error": "Erro de ligação",
+    "Copied from elsewhere": "Copiado doutro sítio",
+    "Copied from original": "Copiado do original",
     "Copyright © 2014 Jakob Borg and the following Contributors:": "Direitos reservados © 2014 Jakob Borg e os seguintes contribuidores:",
     "Delete": "Eliminar",
     "Device ID": "ID do dispositivo",
     "Device Identification": "Identificação do dispositivo",
     "Device Name": "Nome do dispositivo",
+    "Device {%device%} ({%address%}) wants to connect. Add new device?": "O dispositivo {{device}} ({{address}}) quer conectar-se. Adiciono este novo dispositivo?",
     "Disconnected": "Desconectado",
     "Documentation": "Documentação",
     "Download Rate": "Velocidade de recepção",
+    "Downloaded": "Recebido",
+    "Downloading": "Recebendo",
     "Edit": "Editar",
     "Edit Device": "Editar dispositivo",
     "Edit Folder": "Editar pasta",
@@ -38,6 +45,7 @@
     "Folder ID": "ID da pasta",
     "Folder Master": "Pasta mestre",
     "Folder Path": "Caminho da pasta",
+    "Folders": "Pastas",
     "GUI Authentication Password": "Senha da autenticação na interface gráfica",
     "GUI Authentication User": "Utilizador da autenticação na interface gráfica",
     "GUI Listen Addresses": "Endereço de escuta da interface gráfica",
@@ -46,19 +54,24 @@
     "Global Discovery Server": "Servidor da busca global",
     "Global State": "Estado global",
     "Idle": "Em espera",
+    "Ignore": "Ignorar",
     "Ignore Patterns": "Padrões de exclusão",
     "Ignore Permissions": "Ignorar permissões",
     "Incoming Rate Limit (KiB/s)": "Limite de velocidade de recepção (KiB/s)",
     "Introducer": "Apresentador",
     "Inversion of the given condition (i.e. do not exclude)": "Inversão de uma dada condição (ou seja, não excluir)",
     "Keep Versions": "Manter versões",
+    "Last File Synced": "Último ficheiro sincronizado",
     "Last seen": "Última vez que foi verificado",
+    "Later": "Mais tarde",
     "Latest Release": "Última versão",
     "Local Discovery": "Busca local",
     "Local State": "Estado local",
     "Maximum Age": "Idade máxima",
     "Multi level wildcard (matches multiple directory levels)": "Caractere polivalente multi-nível (faz corresponder a vários níveis de pastas)",
     "Never": "Nunca",
+    "New Device": "Novo dispositivo",
+    "New Folder": "Nova pasta",
     "No": "Não",
     "No File Versioning": "Sem gestão de versões de ficheiros",
     "Notice": "Avisos",
@@ -80,11 +93,17 @@
     "Restart": "Reiniciar",
     "Restart Needed": "É preciso reiniciar",
     "Restarting": "Reiniciando",
+    "Reused": "Reutilizado",
     "Save": "Gravar",
     "Scanning": "Verificando",
     "Select the devices to share this folder with.": "Seleccione os dispositivos com os quais vai partilhar esta pasta.",
+    "Select the folders to share with this device.": "Seleccione as pastas a partilhar com este dispositivo.",
     "Settings": "Configurações",
+    "Share": "Partilhar",
+    "Share Folder": "Partilhar pasta",
+    "Share Folders With Device": "Partilhar pastas com dispositivo",
     "Share With Devices": "Partilhar com os dispositivos",
+    "Share this folder?": "Partilhar esta pasta?",
     "Shared With": "Partilhado com",
     "Short identifier for the folder. Must be the same on all cluster devices.": "Identificador curto para a pasta. Tem que ser igual em todos os dispositivos do grupo.",
     "Show ID": "Mostrar ID",
@@ -106,6 +125,7 @@
     "Syncthing is restarting.": "O Syncthing está a reiniciar.",
     "Syncthing is upgrading.": "O Syncthing está a actualizar-se.",
     "Syncthing seems to be down, or there is a problem with your Internet connection. Retrying…": "O Syncthing parece estar em baixo, ou então existe um problema com a sua ligação à Internet. Tentando novamente...",
+    "Syncthing seems to be experiencing a problem processing your request. Please refresh the page or restart Syncthing if the problem persists.": "Syncthing seems to be experiencing a problem processing your request. Please reload your browser or restart Syncthing if the problem persists.",
     "The aggregated statistics are publicly available at {%url%}.": "As estatísticas agrupadas estão disponíveis publicamente em {{url}}.",
     "The configuration has been saved but not activated. Syncthing must restart to activate the new configuration.": "A configuração foi gravada mas não activada. O Syncthing tem que reiniciar para activar a nova configuração.",
     "The device ID cannot be blank.": "O ID do dispositivo não pode estar vazio.",
@@ -124,7 +144,9 @@
     "The rescan interval must be a non-negative number of seconds.": "O intervalo entre verificações tem que ser um valor não negativo de segundos.",
     "The rescan interval must be at least 5 seconds.": "O intervalo entre verificações tem que ser pelo menos de 5 segundos.",
     "Unknown": "Desconhecido",
-    "Up to Date": "Actualizado",
+    "Unshared": "Não partilhada",
+    "Unused": "Não utilizado",
+    "Up to Date": "Sincronizado",
     "Upgrade To {%version%}": "Actualizar para {{version}}",
     "Upgrading": "Actualizando",
     "Upload Rate": "Velocidade de envio",
@@ -138,5 +160,6 @@
     "Yes": "Sim",
     "You must keep at least one version.": "Tem que manter pelo menos uma versão.",
     "full documentation": "documentação completa",
-    "items": "itens"
+    "items": "itens",
+    "{%device%} wants to share folder \"{%folder%}\".": "{{device}} quer partilhar a pasta \"{{folder}}\"."
 }

gui/assets/lang/lang-ru.json

@@ -1,8 +1,10 @@
 {
     "API Key": "Ключ API",
     "About": "О программе",
+    "Add": "Add",
     "Add Device": "Добавить устройство",
     "Add Folder": "Добавить папку",
+    "Add new folder?": "Add new folder?",
     "Address": "Адрес",
     "Addresses": "Адреса",
     "Allow Anonymous Usage Reporting?": "Разрешить сбор анонимной статистики использования?",
@@ -15,14 +17,19 @@
     "Comment, when used at the start of a line": "Комментарий, если используется в начале строки",
     "Compression is recommended in most setups.": "Сжатие рекомендуется в большинстве случаев.",
     "Connection Error": "Ошибка подключения",
+    "Copied from elsewhere": "Скопировано из другого места",
+    "Copied from original": "Скопировано с оригинала",
     "Copyright © 2014 Jakob Borg and the following Contributors:": "Все права защищены © 2014 Jakob Borg и следующие участники:",
     "Delete": "Удалить",
     "Device ID": "ID устройства",
     "Device Identification": "Идентификация устройства",
     "Device Name": "Имя устройства",
+    "Device {%device%} ({%address%}) wants to connect. Add new device?": "Device {{device}} ({{address}}) wants to connect. Add new device?",
     "Disconnected": "Нет соединения",
     "Documentation": "Документация",
     "Download Rate": "Скорость загрузки",
+    "Downloaded": "Загружено",
+    "Downloading": "Загрузка",
     "Edit": "Изменить",
     "Edit Device": "Изменить устройство",
     "Edit Folder": "Изменение папки",
@@ -38,6 +45,7 @@
     "Folder ID": "ID папки",
     "Folder Master": "Папка-оригинал",
     "Folder Path": "Путь к папке",
+    "Folders": "Папки",
     "GUI Authentication Password": "Пароль для доступа к панели управления",
     "GUI Authentication User": "Имя пользователя для доступа к панели управления",
     "GUI Listen Addresses": "Адрес панели управления",
@@ -46,19 +54,24 @@
     "Global Discovery Server": "Сервер глобального обнаружения",
     "Global State": "Глобальное состояние",
     "Idle": "Бездействует",
+    "Ignore": "Ignore",
     "Ignore Patterns": "Шаблоны игнорирования",
     "Ignore Permissions": "Игнорировать файловые права доступа",
     "Incoming Rate Limit (KiB/s)": "Ограничение входящего потока (Кбит/сек)",
     "Introducer": "Рекомендатель",
     "Inversion of the given condition (i.e. do not exclude)": "Инвертировать текущее условие (например, исключить)",
     "Keep Versions": "Количество хранимых версий",
+    "Last File Synced": "Последний синхронизированный файл",
     "Last seen": "Был доступен",
+    "Later": "Later",
     "Latest Release": "Последняя версия",
     "Local Discovery": "Локальное обнаружение",
     "Local State": "Локальное состояние",
     "Maximum Age": "Максимальный срок",
     "Multi level wildcard (matches multiple directory levels)": "Многоуровневая маска (поиск совпадений во всех подпапках)",
     "Never": "Никогда",
+    "New Device": "New Device",
+    "New Folder": "New Folder",
     "No": "Нет",
     "No File Versioning": "Без управления версиями файлов",
     "Notice": "Внимание",
@@ -80,11 +93,17 @@
     "Restart": "Перезапуск",
     "Restart Needed": "Требуется перезапуск",
     "Restarting": "Перезапуск",
+    "Reused": "Повторно использовано",
     "Save": "Сохранить",
     "Scanning": "Сканирование",
     "Select the devices to share this folder with.": "Выберите устройства, для которых будет доступна эта папка.",
+    "Select the folders to share with this device.": "Выберите папку для предоставления доступа данному устройству",
     "Settings": "Настройки",
+    "Share": "Share",
+    "Share Folder": "Share Folder",
+    "Share Folders With Device": "Предоставить доступ устройству к папкам",
     "Share With Devices": "Предоставить доступ устройствам",
+    "Share this folder?": "Share this folder?",
     "Shared With": "Доступ предоставлен",
     "Short identifier for the folder. Must be the same on all cluster devices.": "Короткий идентификатор папки. Должен быть одинаковым на всех устройствах кластера.",
     "Show ID": "Показать ID",
@@ -106,6 +125,7 @@
     "Syncthing is restarting.": "Перезапуск Syncthing",
     "Syncthing is upgrading.": "Обновление Syncthing ",
     "Syncthing seems to be down, or there is a problem with your Internet connection. Retrying…": "Кажется, Syncthing не запущен или есть проблемы с подключением к Интернету. Переподключаюсь...",
+    "Syncthing seems to be experiencing a problem processing your request. Please refresh the page or restart Syncthing if the problem persists.": "Syncthing seems to be experiencing a problem processing your request. Please reload your browser or restart Syncthing if the problem persists.",
     "The aggregated statistics are publicly available at {%url%}.": "Суммарная статистика общедоступна на {{url}}.",
     "The configuration has been saved but not activated. Syncthing must restart to activate the new configuration.": "Конфигурация была сохранена но не активирована. Для активации новой конфигурации необходимо рестартовать Syncthing.",
     "The device ID cannot be blank.": "ID устройства не может быть пустым.",
@@ -124,6 +144,8 @@
     "The rescan interval must be a non-negative number of seconds.": "Интервал пересканирования должен быть неотрицательным количеством секунд.",
     "The rescan interval must be at least 5 seconds.": "Интервал пересканирования должен быть хотя бы 5 секунд.",
     "Unknown": "Неизвестно",
+    "Unshared": "Необщедоступно",
+    "Unused": "Не используется",
     "Up to Date": "Обновлено",
     "Upgrade To {%version%}": "Обновить до {{version}}",
     "Upgrading": "Обновление",
@@ -138,5 +160,6 @@
     "Yes": "Да",
     "You must keep at least one version.": "Вы должны хранить как минимум одну версию.",
     "full documentation": "полная документация",
-    "items": "элементы"
+    "items": "элементы",
+    "{%device%} wants to share folder \"{%folder%}\".": "{{device}} wants to share folder \"{{folder}}\"."
 }

gui/assets/lang/lang-sv.json

@@ -1,28 +1,35 @@
 {
     "API Key": "API-nyckel",
     "About": "Om",
+    "Add": "Add",
     "Add Device": "Lägg till enhet",
     "Add Folder": "Lägg till katalog",
+    "Add new folder?": "Add new folder?",
     "Address": "Adress",
     "Addresses": "Adresser",
     "Allow Anonymous Usage Reporting?": "Tillåt anonym användarstatistik?",
     "Anonymous Usage Reporting": "Anonym användarstatistik",
     "Any devices configured on an introducer device will be added to this device as well.": "Any devices configured on an introducer device will be added to this device as well.",
-    "Automatic upgrades": "Automatic upgrades",
+    "Automatic upgrades": "Automatisk uppgradering",
     "Bugs": "Buggar",
     "CPU Utilization": "CPU-användning",
     "Close": "Stäng",
     "Comment, when used at the start of a line": "Kommentar, vid början av en rad.",
     "Compression is recommended in most setups.": "Komprimering är rekommenderat för de flesta.",
     "Connection Error": "Anslutningsproblem",
+    "Copied from elsewhere": "Kopierat utifrån",
+    "Copied from original": "Oförändrat",
     "Copyright © 2014 Jakob Borg and the following Contributors:": "Copyright © 2014 Jakob Borg och de följande medarbetarna:",
     "Delete": "Radera",
     "Device ID": "Enhets-ID",
     "Device Identification": "Enhetsidentifikation",
     "Device Name": "Enhetsnamn",
+    "Device {%device%} ({%address%}) wants to connect. Add new device?": "Device {{device}} ({{address}}) wants to connect. Add new device?",
     "Disconnected": "Ej ansluten",
     "Documentation": "Dokumentation",
     "Download Rate": "Nedladdningshastighet",
+    "Downloaded": "Nerladdat",
+    "Downloading": "Laddar ner",
     "Edit": "Redigera",
     "Edit Device": "Redigera enhet",
     "Edit Folder": "Redigera katalog",
@@ -38,6 +45,7 @@
     "Folder ID": "Katalog-ID",
     "Folder Master": "Huvudlagring",
     "Folder Path": "Sökväg",
+    "Folders": "Kataloger",
     "GUI Authentication Password": "GUI-lösenord",
     "GUI Authentication User": "GUI-användare",
     "GUI Listen Addresses": "GUI-adress",
@@ -46,19 +54,24 @@
     "Global Discovery Server": "Global uppslagningsserver",
     "Global State": "Global status",
     "Idle": "Vilande",
+    "Ignore": "Ignore",
     "Ignore Patterns": "Filmönster",
     "Ignore Permissions": "Ignorera filrättigheter",
     "Incoming Rate Limit (KiB/s)": "Max nedladdningshastighet (KiB/s)",
     "Introducer": "Introducer",
     "Inversion of the given condition (i.e. do not exclude)": "Vänder på villkoret, d.v.s. exkluderar inte.",
     "Keep Versions": "Behåll versioner",
+    "Last File Synced": "Senast uppdaterad fil",
     "Last seen": "Senast online",
+    "Later": "Later",
     "Latest Release": "Senaste version",
     "Local Discovery": "Lokal uppslagning",
     "Local State": "Lokal status",
     "Maximum Age": "Högsta åldersgräns",
     "Multi level wildcard (matches multiple directory levels)": "Jokertecken som representerar noll eller fler godtyckliga tecken, även över kataloggränser.",
     "Never": "Aldrig",
+    "New Device": "New Device",
+    "New Folder": "New Folder",
     "No": "Nej",
     "No File Versioning": "Ingen versionshantering",
     "Notice": "OBS",
@@ -80,11 +93,17 @@
     "Restart": "Starta om",
     "Restart Needed": "Omstart behövs",
     "Restarting": "Startar om",
+    "Reused": "Återanvänt",
     "Save": "Spara",
     "Scanning": "Uppdaterar",
     "Select the devices to share this folder with.": "Ange enheterna att dela den här katalogen med.",
+    "Select the folders to share with this device.": "Välja kataloger att dela med den här enheten",
     "Settings": "Inställningar",
+    "Share": "Share",
+    "Share Folder": "Share Folder",
+    "Share Folders With Device": "Dela kataloger med enhet",
     "Share With Devices": "Dela med enheter",
+    "Share this folder?": "Share this folder?",
     "Shared With": "Delat med",
     "Short identifier for the folder. Must be the same on all cluster devices.": "Kort identifieringssträng för katalogen. Måste vara samma på alla enheter i klustern.",
     "Show ID": "Visa ID",
@@ -106,6 +125,7 @@
     "Syncthing is restarting.": "Syncthing startar om.",
     "Syncthing is upgrading.": "Syncthing uppgraderas.",
     "Syncthing seems to be down, or there is a problem with your Internet connection. Retrying…": "Syncthing verkar avstängd, eller så är där ett problem med din Internetanslutning. Försöker igen...",
+    "Syncthing seems to be experiencing a problem processing your request. Please refresh the page or restart Syncthing if the problem persists.": "Syncthing seems to be experiencing a problem processing your request. Please reload your browser or restart Syncthing if the problem persists.",
     "The aggregated statistics are publicly available at {%url%}.": "Aggregerad statistik finns publikt tillgänglig på {{url}}.",
     "The configuration has been saved but not activated. Syncthing must restart to activate the new configuration.": "Konfigurationen har sparats men inte aktiverats. Syncthing måste startas om för att aktivera den nya konfigurationen.",
     "The device ID cannot be blank.": "Enhets-ID kan inte vara blankt.",
@@ -121,9 +141,11 @@
     "The maximum time to keep a version (in days, set to 0 to keep versions forever).": "Den längsta tid att behålla en version (i dagar, sätt till 0 för att behålla versioner för evigt).",
     "The number of old versions to keep, per file.": "Antalet gamla versioner som ska behållas, per fil.",
     "The number of versions must be a number and cannot be blank.": "Antalet versioner måste vara ett nummer och kan inte lämnas blankt.",
-    "The rescan interval must be a non-negative number of seconds.": "The rescan interval must be a non-negative number of seconds.",
+    "The rescan interval must be a non-negative number of seconds.": "Förnyelseintervallet måste vara ett positivt antal sekunder",
     "The rescan interval must be at least 5 seconds.": "Uppdateringsintervallet måste vara minst 5 sekunder.",
     "Unknown": "Okänt",
+    "Unshared": "Odelat",
+    "Unused": "Oanvänd",
     "Up to Date": "Helt uppdaterad",
     "Upgrade To {%version%}": "Uppgradera till {{version}}",
     "Upgrading": "Uppgraderar",
@@ -138,5 +160,6 @@
     "Yes": "Ja",
     "You must keep at least one version.": "Du måste behålla åtminstone en version.",
     "full documentation": "fullständig dokumentation",
-    "items": "poster"
+    "items": "poster",
+    "{%device%} wants to share folder \"{%folder%}\".": "{{device}} wants to share folder \"{{folder}}\"."
 }

gui/assets/lang/lang-zh-CN.json

@@ -1,8 +1,10 @@
 {
     "API Key": "API Key",
     "About": "关于",
+    "Add": "Add",
     "Add Device": "添加设备",
     "Add Folder": "添加文件夹",
+    "Add new folder?": "Add new folder?",
     "Address": "地址",
     "Addresses": "地址列表",
     "Allow Anonymous Usage Reporting?": "允许匿名使用报告?",
@@ -15,14 +17,19 @@
     "Comment, when used at the start of a line": "注释，在行首使用",
     "Compression is recommended in most setups.": "在大多数场合，建议开启压缩",
     "Connection Error": "连接出错",
+    "Copied from elsewhere": "从其他地点复制",
+    "Copied from original": "从源复制",
     "Copyright © 2014 Jakob Borg and the following Contributors:": "版权© 2014 Jakob Borg 及以下贡献者:",
     "Delete": "删除",
     "Device ID": "设备ID",
     "Device Identification": "设备ID",
     "Device Name": "设备名",
+    "Device {%device%} ({%address%}) wants to connect. Add new device?": "Device {{device}} ({{address}}) wants to connect. Add new device?",
     "Disconnected": "连接已断开",
     "Documentation": "文档",
     "Download Rate": "下载速度",
+    "Downloaded": "已下载",
+    "Downloading": "下载中",
     "Edit": "选项",
     "Edit Device": "修改设备选项",
     "Edit Folder": "修改文件夹选项",
@@ -38,6 +45,7 @@
     "Folder ID": "文件夹ID",
     "Folder Master": "母文件夹",
     "Folder Path": "文件夹路径",
+    "Folders": "文件夹",
     "GUI Authentication Password": "登陆web管理页面的密码",
     "GUI Authentication User": "登陆web管理页面的用户名",
     "GUI Listen Addresses": "web管理页面监听地址",
@@ -46,19 +54,24 @@
     "Global Discovery Server": "用以在互联网上寻找节点的Announce服务器地址",
     "Global State": "全局状态",
     "Idle": "空闲",
+    "Ignore": "Ignore",
     "Ignore Patterns": "忽略列表",
     "Ignore Permissions": "忽略文件权限",
     "Incoming Rate Limit (KiB/s)": "下载速率限制(千字节/秒)",
     "Introducer": "介绍人节点",
     "Inversion of the given condition (i.e. do not exclude)": "对本条件取反（例如：不要排除某项）",
     "Keep Versions": "保留历史版本数量",
+    "Last File Synced": "最近同步的文件",
     "Last seen": "最后可见",
+    "Later": "Later",
     "Latest Release": "最新版本",
     "Local Discovery": "在局域网上寻找节点",
     "Local State": "本地状态",
     "Maximum Age": "历史版本最长保留时间",
     "Multi level wildcard (matches multiple directory levels)": "多级通配符（用以匹配多层文件夹）",
     "Never": "从未",
+    "New Device": "New Device",
+    "New Folder": "New Folder",
     "No": "否",
     "No File Versioning": "不启用版本控制",
     "Notice": "提示",
@@ -80,11 +93,17 @@
     "Restart": "重启syncthing",
     "Restart Needed": "需要重启Syncthing",
     "Restarting": "重启中",
+    "Reused": "复用",
     "Save": "保存",
     "Scanning": "扫描中",
     "Select the devices to share this folder with.": "选择将本文件夹共享给哪些设备",
+    "Select the folders to share with this device.": "选择与该设备共享的文件夹。",
     "Settings": "设置",
+    "Share": "Share",
+    "Share Folder": "Share Folder",
+    "Share Folders With Device": "将指定文件夹共享给设备",
     "Share With Devices": "共享给",
+    "Share this folder?": "Share this folder?",
     "Shared With": "共享给",
     "Short identifier for the folder. Must be the same on all cluster devices.": "文件夹的别名。必须在所有设备上保持一致。",
     "Show ID": "显示设备ID",
@@ -106,6 +125,7 @@
     "Syncthing is restarting.": "Syncthing正在重启",
     "Syncthing is upgrading.": "Syncthing正在升级",
     "Syncthing seems to be down, or there is a problem with your Internet connection. Retrying…": "Syncthing似乎关闭了，或者您的网络连接存在故障。重试中...",
+    "Syncthing seems to be experiencing a problem processing your request. Please refresh the page or restart Syncthing if the problem persists.": "Syncthing seems to be experiencing a problem processing your request. Please reload your browser or restart Syncthing if the problem persists.",
     "The aggregated statistics are publicly available at {%url%}.": "全局统计公布于 {{url}}",
     "The configuration has been saved but not activated. Syncthing must restart to activate the new configuration.": "设置已经保存，但是还未生效。Syncthing需要重启以启用新的设置。",
     "The device ID cannot be blank.": "设备ID不能为空",
@@ -124,6 +144,8 @@
     "The rescan interval must be a non-negative number of seconds.": "扫描间隔单位为秒，且不能为负数。",
     "The rescan interval must be at least 5 seconds.": "扫描间隔必须至少为5秒。",
     "Unknown": "未知",
+    "Unshared": "未共享",
+    "Unused": "已共享",
     "Up to Date": "同步完成",
     "Upgrade To {%version%}": "升级至版本{{version}}",
     "Upgrading": "升级中",
@@ -138,5 +160,6 @@
     "Yes": "是",
     "You must keep at least one version.": "您必须保留至少一个版本。",
     "full documentation": "完整文档",
-    "items": "条目"
+    "items": "条目",
+    "{%device%} wants to share folder \"{%folder%}\".": "{{device}} wants to share folder \"{{folder}}\"."
 }

gui/assets/lang/lang-zh-TW.json

@@ -1,8 +1,10 @@
 {
     "API Key": "API 金鑰",
     "About": "關於",
+    "Add": "Add",
     "Add Device": "增加裝置",
     "Add Folder": "增加資料夾",
+    "Add new folder?": "Add new folder?",
     "Address": "位址",
     "Addresses": "位址",
     "Allow Anonymous Usage Reporting?": "允許匿名的使用資訊回報？",
@@ -15,14 +17,19 @@
     "Comment, when used at the start of a line": "註解，當輸入在一行的開頭時",
     "Compression is recommended in most setups.": "建議在大多數的設置中使用壓縮。",
     "Connection Error": "連線錯誤",
+    "Copied from elsewhere": "Copied from elsewhere",
+    "Copied from original": "Copied from original",
     "Copyright © 2014 Jakob Borg and the following Contributors:": "版權所有 © 2014 Jakob Borg 及以下貢獻者：",
     "Delete": "刪除",
     "Device ID": "裝置識別碼",
     "Device Identification": "裝置識別",
     "Device Name": "裝置名稱",
+    "Device {%device%} ({%address%}) wants to connect. Add new device?": "Device {{device}} ({{address}}) wants to connect. Add new device?",
     "Disconnected": "斷線",
     "Documentation": "說明文件",
     "Download Rate": "下載速率",
+    "Downloaded": "已下載",
+    "Downloading": "正在下載",
     "Edit": "編輯",
     "Edit Device": "編輯裝置",
     "Edit Folder": "編輯資料夾",
@@ -38,6 +45,7 @@
     "Folder ID": "資料夾識別碼",
     "Folder Master": "主資料夾",
     "Folder Path": "資料夾路徑",
+    "Folders": "資料夾",
     "GUI Authentication Password": "GUI 認證密碼",
     "GUI Authentication User": "GUI 認證使用者名稱",
     "GUI Listen Addresses": "GUI 監聽位址",
@@ -46,19 +54,24 @@
     "Global Discovery Server": "全域探索伺服器",
     "Global State": "全域狀態",
     "Idle": "閒置",
+    "Ignore": "Ignore",
     "Ignore Patterns": "忽略樣式",
     "Ignore Permissions": "忽略權限",
     "Incoming Rate Limit (KiB/s)": "連入速率限制 (KiB/s)",
     "Introducer": "引入者",
     "Inversion of the given condition (i.e. do not exclude)": "反轉給定條件 (即：不要排除)",
     "Keep Versions": "保留歷史版本數",
+    "Last File Synced": "最後同步檔案",
     "Last seen": "最後發現時間",
+    "Later": "Later",
     "Latest Release": "最新發佈",
     "Local Discovery": "本地探索",
     "Local State": "本地狀態",
     "Maximum Age": "最長保留時間",
     "Multi level wildcard (matches multiple directory levels)": "多階層萬用字元 (可比對多層資料夾)",
     "Never": "從未",
+    "New Device": "New Device",
+    "New Folder": "New Folder",
     "No": "否",
     "No File Versioning": "無檔案版本控制",
     "Notice": "注意",
@@ -80,11 +93,17 @@
     "Restart": "重新啟動",
     "Restart Needed": "需要重新啟動",
     "Restarting": "正在重新啟動",
+    "Reused": "Reused",
     "Save": "儲存",
     "Scanning": "正在掃描",
     "Select the devices to share this folder with.": "選擇要共享這個資料夾的裝置。",
+    "Select the folders to share with this device.": "選擇要共享這個資料夾的裝置。",
     "Settings": "設定",
+    "Share": "Share",
+    "Share Folder": "Share Folder",
+    "Share Folders With Device": "與裝置共享資料夾",
     "Share With Devices": "與這些裝置共享",
+    "Share this folder?": "Share this folder?",
     "Shared With": "與誰共享",
     "Short identifier for the folder. Must be the same on all cluster devices.": "資料夾的簡短識別字。必須在叢集內所有的裝置上皆相同。",
     "Show ID": "顯示識別碼",
@@ -106,6 +125,7 @@
     "Syncthing is restarting.": "Syncthing 正在重新啟動。",
     "Syncthing is upgrading.": "Syncthing 正在進行升級。",
     "Syncthing seems to be down, or there is a problem with your Internet connection. Retrying…": "Syncthing 似乎下線了，或者您的網際網路連線出現問題。正在重試...",
+    "Syncthing seems to be experiencing a problem processing your request. Please refresh the page or restart Syncthing if the problem persists.": "Syncthing seems to be experiencing a problem processing your request. Please reload your browser or restart Syncthing if the problem persists.",
     "The aggregated statistics are publicly available at {%url%}.": "匯總統計資訊公佈於 {{url}}。",
     "The configuration has been saved but not activated. Syncthing must restart to activate the new configuration.": "組態已經儲存但尚未啟用。Syncthing 必須重新啟動以便啟用新的組態。",
     "The device ID cannot be blank.": "裝置識別碼不能為空白。",
@@ -124,6 +144,8 @@
     "The rescan interval must be a non-negative number of seconds.": "重新掃描間隔必須為一個非負數的秒數。",
     "The rescan interval must be at least 5 seconds.": "重新掃描間隔至少須為 5 秒。",
     "Unknown": "未知",
+    "Unshared": "未共享",
+    "Unused": "未使用",
     "Up to Date": "最新",
     "Upgrade To {%version%}": "升級至 {{version}}",
     "Upgrading": "正在升級",
@@ -138,5 +160,6 @@
     "Yes": "是",
     "You must keep at least one version.": "您必須保留至少一個版本。",
     "full documentation": "完整說明文件",
-    "items": "個項目"
+    "items": "個項目",
+    "{%device%} wants to share folder \"{%folder%}\".": "{{device}} wants to share folder \"{{folder}}\"."
 }

gui/index.html

@@ -308,6 +308,73 @@
       </div>
     </div> <!-- /row -->
 
+    <!-- Device Rejections -->
+
+    <div ng-repeat="(device, event) in deviceRejections" class="row">
+      <div class="col-md-12">
+        <div class="panel panel-warning">
+          <div class="panel-heading">
+            <h3 class="panel-title">
+              <identicon data-value="device"></identicon>&emsp;<span translate>New Device</span>
+            </h3>
+          </div>
+          <div class="panel-body">
+            <p>
+              <small>{{ event.time | date:"H:mm:ss" }}:</small>
+              <span translate translate-value-device="{{ device }}" translate-value-address="{{ event.data.address }}">
+                Device {%device%} ({%address%}) wants to connect. Add new device?
+              <span>
+            </p>
+          </div>
+          <div class="panel-footer clearfix">
+            <div class="pull-right">
+              <button class="btn btn-sm btn-success" ng-click="addNewDeviceID(device)"><span class="glyphicon glyphicon-ok"></span>&emsp;<span translate>Add</span></button>
+              <button class="btn btn-sm btn-danger" ng-click="ignoreRejectedDevice(device)"><span class="glyphicon glyphicon-remove"></span>&emsp;<span translate>Ignore</span></button>
+              <button class="btn btn-sm btn-default" ng-click="dismissDeviceRejection(device)"><span class="glyphicon glyphicon-time"></span>&emsp;<span translate>Later</span></button>
+            </div>
+          </div>
+        </div>
+      </div>
+    </div>
+
+    <!-- Folder Rejections -->
+
+    <div ng-repeat="(key, event) in folderRejections" class="row reject">
+      <div class="col-md-12">
+        <div class="panel panel-warning">
+          <div class="panel-heading">
+            <h3 class="panel-title">
+              <span translate ng-if="!folders[event.data.folder]">New Folder</span>
+              <span translate ng-if="folders[event.data.folder]">Share Folder</span>
+            </h3>
+          </div>
+          <div class="panel-body">
+            <p>
+              <small>{{ event.time | date:"H:mm:ss" }}:</small>
+              <span translate translate-value-device="{{ deviceName(findDevice(event.data.device)) }}" translate-value-folder="{{ event.data.folder }}">
+                {%device%} wants to share folder "{%folder%}".
+              </span>
+              <span translate ng-if="folders[event.data.folder]">Share this folder?</span>
+              <span translate ng-if="!folders[event.data.folder]">Add new folder?</span>
+            </p>
+          </div>
+          <div class="panel-footer clearfix">
+            <div class="pull-right">
+              <button class="btn btn-sm btn-success" ng-click="addFolderAndShare(event.data.folder, event.data.device)" ng-if="!folders[event.data.folder]">
+                <span class="glyphicon glyphicon-ok"></span>&emsp;<span translate>Add</span>
+              </button>
+              <button class="btn btn-sm btn-success" ng-click="shareFolderWithDevice(event.data.folder, event.data.device)" ng-if="folders[event.data.folder]">
+                <span class="glyphicon glyphicon-ok"></span>&emsp;<span translate>Share</span>
+              </button>
+              <button class="btn btn-sm btn-default" ng-click="dismissFolderRejection(event.data.folder, event.data.device)">
+                <span class="glyphicon glyphicon-time"></span>&emsp;<span translate>Later</span>
+              </button>
+            </div>
+          </div>
+        </div>
+      </div>
+    </div>
+
     <!-- Errors -->
 
     <div ng-if="errorList().length > 0" class="row">
@@ -349,6 +416,14 @@
     </p>
   </modal>
 
+  <!-- HTTP error modal -->
+
+  <modal id="httpError" status="danger" icon="exclamation-sign" title="{{'Connection Error' | translate}}">
+    <p translate>
+      Syncthing seems to be experiencing a problem processing your request. Please refresh the page or restart Syncthing if the problem persists.
+    </p>
+  </modal>
+
   <!-- Restarting modal -->
 
   <modal id="restarting" icon="refresh" title="{{'Restarting' | translate}}" status="info">
@@ -790,33 +865,51 @@
   <!-- Needed files modal -->
 
   <modal id="needed" large="yes" status="info" icon="cloud-download" close="yes" title="Out of Sync Items">
-    <table class="table table-striped table-condensed">
-      <tr ng-repeat="f in needed" ng-init="a = needAction(f)">
-        <td class="small-data"><span class="glyphicon glyphicon-{{needIcons[a]}}"></span> {{needActions[a]}}</td>
-        <td title="{{f.Name}}">{{f.Name | basename}}</td>
-        <td>
-          <span ng-if="a == 'sync' && progress[neededFolder] && progress[neededFolder][f.Name]">
-            <div class="progress progress-striped active">
-              <div class="progress-bar progress-bar-success" style="width: {{progress[neededFolder][f.Name].Reused}}%"></div>
-              <div class="progress-bar" style="width: {{progress[neededFolder][f.Name].CopiedFromOrigin}}%"></div>
-              <div class="progress-bar progress-bar-info" style="width: {{progress[neededFolder][f.Name].CopiedFromElsewhere}}%"></div>
-              <div class="progress-bar progress-bar-warning" style="width: {{progress[neededFolder][f.Name].Pulled}}%"></div>
-              <div class="progress-bar progress-bar-danger" style="width: {{progress[neededFolder][f.Name].Pulling}}%"></div>
-              <span class="show frontal">{{progress[neededFolder][f.Name].BytesDone | binary}}B / {{progress[neededFolder][f.Name].BytesTotal | binary}}B</span>
-            </div>
-          </span>
-        </td>
-      </tr>
-    </table>
-    <span translate>Legend:</span>
-    <div class="progress progress-striped active">
+    <div class="progress">
       <div class="progress-bar progress-bar-success" style="width: 20%"><span translate class="show">Reused</span></div>
       <div class="progress-bar" style="width: 20%"><span translate class="show">Copied from original</span></div>
       <div class="progress-bar progress-bar-info" style="width: 20%"><span translate class="show">Copied from elsewhere</span></div>
       <div class="progress-bar progress-bar-warning" style="width: 20%"><span translate class="show">Downloaded</span></div>
-      <div class="progress-bar progress-bar-danger" style="width: 20%"><span translate class="show">Downloading</span></div>
+      <div class="progress-bar progress-bar-danger progress-bar-striped active" style="width: 20%"><span translate class="show">Downloading</span></div>
     </div>
 
+    <hr/>
+
+    <table class="table table-striped table-condensed">
+      <tr ng-repeat="f in needed.progress" ng-init="a = needAction(f)">
+        <td class="small-data"><span class="glyphicon glyphicon-{{needIcons[a]}}"></span> {{needActions[a]}}</td>
+        <td title="{{f.Name}}">{{f.Name | basename}}</td>
+        <td ng-if="a == 'sync' && progress[neededFolder] && progress[neededFolder][f.Name]">
+          <div class="progress">
+            <div class="progress-bar progress-bar-success" style="width: {{progress[neededFolder][f.Name].Reused}}%"></div>
+            <div class="progress-bar" style="width: {{progress[neededFolder][f.Name].CopiedFromOrigin}}%"></div>
+            <div class="progress-bar progress-bar-info" style="width: {{progress[neededFolder][f.Name].CopiedFromElsewhere}}%"></div>
+            <div class="progress-bar progress-bar-warning" style="width: {{progress[neededFolder][f.Name].Pulled}}%"></div>
+            <div class="progress-bar progress-bar-danger progress-bar-striped active" style="width: {{progress[neededFolder][f.Name].Pulling}}%"></div>
+            <span class="show frontal">
+              {{progress[neededFolder][f.Name].BytesDone | binary}}B / {{progress[neededFolder][f.Name].BytesTotal | binary}}B
+            </span>
+          </div>
+        </td>
+        <td class="text-right small-data" ng-if="a != 'sync' || !progress[neededFolder] || !progress[neededFolder][f.Name]">
+          <span ng-if="f.Size > 0">{{f.Size | binary}}B</span>
+        </td>
+      </tr>
+      <tr ng-repeat="f in needed.queued" ng-init="a = needAction(f)">
+        <td class="small-data"><span class="glyphicon glyphicon-{{needIcons[a]}}"></span> {{needActions[a]}}</td>
+        <td title="{{f.Name}}">{{f.Name | basename}}</td>
+        <td class="text-right small-data">
+          <span ng-if="$index != 0" class="glyphicon glyphicon-chevron-up" ng-click="bumpFile(neededFolder, f.Name)"></span>
+          <span ng-if="f.Size > 0">{{f.Size | binary}}B</span>
+         </td>
+      </tr>
+      <tr ng-repeat="f in needed.rest" ng-init="a = needAction(f)">
+        <td class="small-data"><span class="glyphicon glyphicon-{{needIcons[a]}}"></span> {{needActions[a]}}</td>
+        <td title="{{f.Name}}">{{f.Name | basename}}</td>
+        <td class="text-right small-data"><span ng-if="f.Size > 0">{{f.Size | binary}}B</span></td>
+      </tr>
+    </table>
+
   </modal>
 
   <!-- About modal -->
@@ -837,7 +930,9 @@
           <li>Ben Schulz</li>
           <li>Ben Sidhom</li>
           <li>Brandon Philips</li>
+          <li>Brendan Long</li>
           <li>Caleb Callaway</li>
+          <li>Cathryne Linenweaver</li>
           <li>Chris Joel</li>
           <li>Daniel Martí</li>
           <li>Dennis Wilson</li>
@@ -852,6 +947,7 @@
           <li>Lode Hoste</li>
           <li>Marcin Dziadus</li>
           <li>Michael Tilli</li>
+          <li>Peter Hoeg</li>
           <li>Philippe Schommers</li>
           <li>Phill Luby</li>
           <li>Piotr Bejda</li>

gui/scripts/syncthing/app.js

@@ -104,15 +104,12 @@ function decimals(val, num) {
     return decs;
 }
 
-function randomString(len, bits) {
-    bits = bits || 36;
-    var outStr = "",
-        newStr;
-    while (outStr.length < len) {
-        newStr = Math.random().toString(bits).slice(2);
-        outStr += newStr.slice(0, Math.min(newStr.length, (len - outStr.length)));
+function randomString(len) {
+    var i, result = '', chars = '01234567890abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ-';
+    for (i = 0; i < len; i++) {
+        result += chars[Math.round(Math.random() * (chars.length - 1))];
     }
-    return outStr.toLowerCase();
+    return result;
 }
 
 function isEmptyObject(obj) {

gui/scripts/syncthing/core/controllers/syncthingController.js

@@ -10,7 +10,6 @@ angular.module('syncthing.core')
         var restarting = false;
 
         function initController() {
-
             LocaleService.autoConfigLocale();
 
             refreshSystem();
@@ -21,11 +20,11 @@ angular.module('syncthing.core')
 
             $http.get(urlbase + '/version').success(function (data) {
                 $scope.version = data.version;
-            });
+            }).error($scope.emitHTTPError);
 
             $http.get(urlbase + '/report').success(function (data) {
                 $scope.reportData = data;
-            });
+            }).error($scope.emitHTTPError);
 
             $http.get(urlbase + '/upgrade').success(function (data) {
                 $scope.upgradeInfo = data;
@@ -47,6 +46,8 @@ angular.module('syncthing.core')
         $scope.model = {};
         $scope.myID = '';
         $scope.devices = [];
+        $scope.deviceRejections = {};
+        $scope.folderRejections = {};
         $scope.protocolChanged = false;
         $scope.reportData = {};
         $scope.reportPreview = false;
@@ -104,6 +105,30 @@ angular.module('syncthing.core')
             }
         });
 
+        $scope.$on('HTTPError', function (event, arg) {
+            // Emitted when a HTTP call fails. We use the status code to try
+            // to figure out what's wrong.
+
+            if (navigatingAway || !online) {
+                return;
+            }
+
+            console.log('HTTPError', arg);
+            online = false;
+            if (!restarting) {
+                if (arg.status === 0) {
+                    // A network error, not an HTTP error
+                    $scope.$emit('UIOffline');
+                } else if (arg.status >= 400 && arg.status <= 599) {
+                    // A genuine HTTP error
+                    $('#networkError').modal('hide');
+                    $('#restarting').modal('hide');
+                    $('#shutdown').modal('hide');
+                    $('#httpError').modal();
+                }
+            }
+        });
+
         $scope.$on('StateChanged', function (event, arg) {
             var data = arg.data;
             if ($scope.model[data.folder]) {
@@ -168,12 +193,20 @@ angular.module('syncthing.core')
             }
         });
 
+        $scope.$on('DeviceRejected', function (event, arg) {
+            $scope.deviceRejections[arg.data.device] = arg;
+        });
+
+        $scope.$on('FolderRejected', function (event, arg) {
+            $scope.folderRejections[arg.data.folder + "-" + arg.data.device] = arg;
+        });
+
         $scope.$on('ConfigSaved', function (event, arg) {
             updateLocalConfig(arg.data);
 
             $http.get(urlbase + '/config/sync').success(function (data) {
                 $scope.configInSync = data.configInSync;
-            });
+            }).error($scope.emitHTTPError);
         });
 
         $scope.$on('DownloadProgress', function (event, arg) {
@@ -223,6 +256,10 @@ angular.module('syncthing.core')
             console.log("DownloadProgress", $scope.progress);
         });
 
+        $scope.emitHTTPError = function (data, status, headers, config) {
+            $scope.$emit('HTTPError', {data: data, status: status, headers: headers, config: config});
+        };
+
         var debouncedFuncs = {};
 
         function refreshFolder(folder) {
@@ -232,7 +269,7 @@ angular.module('syncthing.core')
                     $http.get(urlbase + '/model?folder=' + encodeURIComponent(folder)).success(function (data) {
                         $scope.model[folder] = data;
                         console.log("refreshFolder", folder, data);
-                    });
+                    }).error($scope.emitHTTPError);
                 }, 1000, true);
             }
             debouncedFuncs[key]();
@@ -279,7 +316,7 @@ angular.module('syncthing.core')
                 }
                 $scope.announceServersFailed = failed;
                 console.log("refreshSystem", data);
-            });
+            }).error($scope.emitHTTPError);
         }
 
         function refreshCompletion(device, folder) {
@@ -308,7 +345,7 @@ angular.module('syncthing.core')
                         $scope.completion[device]._total = tot / cnt;
 
                         console.log("refreshCompletion", device, folder, $scope.completion[device]);
-                    });
+                    }).error($scope.emitHTTPError);
                 }, 1000, true);
             }
             debouncedFuncs[key]();
@@ -335,25 +372,25 @@ angular.module('syncthing.core')
                 }
                 $scope.connections = data;
                 console.log("refreshConnections", data);
-            });
+            }).error($scope.emitHTTPError);
         }
 
         function refreshErrors() {
             $http.get(urlbase + '/errors').success(function (data) {
                 $scope.errors = data.errors;
                 console.log("refreshErrors", data);
-            });
+            }).error($scope.emitHTTPError);
         }
 
         function refreshConfig() {
             $http.get(urlbase + '/config').success(function (data) {
                 updateLocalConfig(data);
                 console.log("refreshConfig", data);
-            });
+            }).error($scope.emitHTTPError);
 
             $http.get(urlbase + '/config/sync').success(function (data) {
                 $scope.configInSync = data.configInSync;
-            });
+            }).error($scope.emitHTTPError);
         }
 
         function refreshNeed(folder) {
@@ -362,7 +399,7 @@ angular.module('syncthing.core')
                     console.log("refreshNeed", folder, data);
                     $scope.needed = data;
                 }
-            });
+            }).error($scope.emitHTTPError);
         }
 
         var refreshDeviceStats = debounce(function () {
@@ -373,7 +410,7 @@ angular.module('syncthing.core')
                     $scope.deviceStats[device].LastSeenDays = (new Date() - $scope.deviceStats[device].LastSeen) / 1000 / 86400;
                 }
                 console.log("refreshDeviceStats", data);
-            });
+            }).error($scope.emitHTTPError);
         }, 500);
 
         var refreshFolderStats = debounce(function () {
@@ -385,7 +422,7 @@ angular.module('syncthing.core')
                     }
                 }
                 console.log("refreshfolderStats", data);
-            });
+            }).error($scope.emitHTTPError);
         }, 500);
 
         $scope.refresh = function () {
@@ -566,7 +603,7 @@ angular.module('syncthing.core')
                 $http.get(urlbase + '/config/sync').success(function (data) {
                     $scope.configInSync = data.configInSync;
                 });
-            });
+            }).error($scope.emitHTTPError);
         };
 
         $scope.saveSettings = function () {
@@ -646,7 +683,7 @@ angular.module('syncthing.core')
             restarting = true;
             $http.post(urlbase + '/shutdown').success(function () {
                 $('#shutdown').modal();
-            });
+            }).error($scope.emitHTTPError);
             $scope.configInSync = true;
         };
 
@@ -698,6 +735,11 @@ angular.module('syncthing.core')
                 return n.DeviceID !== $scope.currentDevice.DeviceID;
             });
             $scope.config.Devices = $scope.devices;
+            // In case we later added the device manually, remove the ignoral
+            // record.
+            $scope.config.IgnoredDevices = $scope.config.IgnoredDevices.filter(function (id) {
+                return id !== $scope.currentDevice.DeviceID;
+            });
 
             for (var id in $scope.folders) {
                 $scope.folders[id].Devices = $scope.folders[id].Devices.filter(function (n) {
@@ -709,10 +751,24 @@ angular.module('syncthing.core')
         };
 
         $scope.saveDevice = function () {
-            var deviceCfg, done, i;
-
             $('#editDevice').modal('hide');
-            deviceCfg = $scope.currentDevice;
+            $scope.saveDeviceConfig($scope.currentDevice);
+        };
+
+        $scope.addNewDeviceID = function (device) {
+            var deviceCfg = {
+                DeviceID: device,
+                AddressesStr: 'dynamic',
+                Compression: true,
+                Introducer: false,
+                selectedFolders: {}
+            };
+            $scope.saveDeviceConfig(deviceCfg);
+            $scope.dismissDeviceRejection(device);
+        };
+
+        $scope.saveDeviceConfig = function (deviceCfg) {
+            var done, i;
             deviceCfg.Addresses = deviceCfg.AddressesStr.split(',').map(function (x) {
                 return x.trim();
             });
@@ -732,6 +788,11 @@ angular.module('syncthing.core')
 
             $scope.devices.sort(deviceCompare);
             $scope.config.Devices = $scope.devices;
+            // In case we are adding the device manually, remove the ignoral
+            // record.
+            $scope.config.IgnoredDevices = $scope.config.IgnoredDevices.filter(function (id) {
+                return id !== deviceCfg.DeviceID;
+            });
 
             if (!$scope.editingSelf) {
                 for (var id in deviceCfg.selectedFolders) {
@@ -749,7 +810,6 @@ angular.module('syncthing.core')
                                 DeviceID: deviceCfg.DeviceID
                             });
                         }
-                        continue
                     } else {
                         $scope.folders[id].Devices = $scope.folders[id].Devices.filter(function (n) {
                             return n.DeviceID != deviceCfg.DeviceID;
@@ -761,6 +821,16 @@ angular.module('syncthing.core')
             $scope.saveConfig();
         };
 
+        $scope.dismissDeviceRejection = function (device) {
+            delete $scope.deviceRejections[device];
+        };
+
+        $scope.ignoreRejectedDevice = function (device) {
+            $scope.config.IgnoredDevices.push(device);
+            $scope.saveConfig();
+            $scope.dismissDeviceRejection(device);
+        };
+
         $scope.otherDevices = function () {
             return $scope.devices.filter(function (n) {
                 return n.DeviceID !== $scope.myID;
@@ -814,11 +884,11 @@ angular.module('syncthing.core')
                 params: { current: newvalue }
             }).success(function (data) {
                 $scope.directoryList = data;
-            });
+            }).error($scope.emitHTTPError);
         });
 
-        $scope.editFolder = function (deviceCfg) {
-            $scope.currentFolder = angular.copy(deviceCfg);
+        $scope.editFolder = function (folderCfg) {
+            $scope.currentFolder = angular.copy(folderCfg);
             $scope.currentFolder.selectedDevices = {};
             $scope.currentFolder.Devices.forEach(function (n) {
                 $scope.currentFolder.selectedDevices[n.DeviceID] = true;
@@ -867,6 +937,34 @@ angular.module('syncthing.core')
             $('#editFolder').modal();
         };
 
+        $scope.addFolderAndShare = function (folder, device) {
+            $scope.dismissFolderRejection(folder, device);
+            $scope.currentFolder = {
+                ID: folder,
+                selectedDevices: {}
+            };
+            $scope.currentFolder.selectedDevices[device] = true;
+
+            $scope.currentFolder.RescanIntervalS = 60;
+            $scope.currentFolder.FileVersioningSelector = "none";
+            $scope.currentFolder.simpleKeep = 5;
+            $scope.currentFolder.staggeredMaxAge = 365;
+            $scope.currentFolder.staggeredCleanInterval = 3600;
+            $scope.currentFolder.staggeredVersionsPath = "";
+            $scope.editingExisting = false;
+            $scope.folderEditor.$setPristine();
+            $('#editFolder').modal();
+        };
+
+        $scope.shareFolderWithDevice = function (folder, device) {
+            $scope.folders[folder].Devices.push({
+                DeviceID: device
+            });
+            $scope.config.Folders = folderList($scope.folders);
+            $scope.saveConfig();
+            $scope.dismissFolderRejection(folder, device);
+        };
+
         $scope.saveFolder = function () {
             var folderCfg, done, i;
 
@@ -916,6 +1014,10 @@ angular.module('syncthing.core')
             $scope.saveConfig();
         };
 
+        $scope.dismissFolderRejection = function (folder, device) {
+            delete $scope.folderRejections[folder + "-" + device];
+        };
+
         $scope.sharesFolder = function (folderCfg) {
             var names = [];
             folderCfg.Devices.forEach(function (device) {
@@ -994,7 +1096,7 @@ angular.module('syncthing.core')
         };
 
         $scope.setAPIKey = function (cfg) {
-            cfg.APIKey = randomString(30, 32);
+            cfg.APIKey = randomString(32);
         };
 
         $scope.showURPreview = function () {
@@ -1056,6 +1158,15 @@ angular.module('syncthing.core')
             $http.post(urlbase + "/scan?folder=" + encodeURIComponent(folder));
         };
 
+        $scope.bumpFile = function (folder, file) {
+            $http.post(urlbase + "/bump?folder=" + encodeURIComponent(folder) + "&file=" + encodeURIComponent(file)).success(function (data) {
+                if ($scope.neededFolder == folder) {
+                    console.log("bumpFile", folder, data);
+                    $scope.needed = data;
+                }
+            }).error($scope.emitHTTPError);
+        };
+
         // pseudo main. called on all definitions assigned
         initController();
     });

gui/vendor/bootstrap/variables.less

@@ -1,857 +0,0 @@
-//
-// Variables
-// --------------------------------------------------
-
-
-//== Colors
-//
-//## Gray and brand colors for use across Bootstrap.
-
-@gray-base:              #000;
-@gray-darker:            lighten(#000, 13.5%); // #222
-@gray-dark:              lighten(#000, 20%);   // #333
-@gray:                   lighten(#000, 33.5%); // #555
-@gray-light:             lighten(#000, 60%);   // #999
-@gray-lighter:           lighten(#000, 93.5%); // #eee
-
-@brand-primary:         #3498db;
-@brand-success:         #2ecc71;
-@brand-info:            #9b59b6;
-@brand-warning:         #f1c40f;
-@brand-danger:          #e74c3c;
-
-
-//== Scaffolding
-//
-
-//** Background color for `<body>`.
-@body-bg:               #fff;
-//** Global text color on `<body>`.
-@text-color:            @gray-dark;
-
-//** Global textual link color.
-@link-color:            @brand-primary;
-//** Link hover color set via `darken()` function.
-@link-hover-color:      darken(@link-color, 15%);
-//** Link hover decoration.
-@link-hover-decoration: underline;
-
-
-//== Typography
-//
-//## Font, line-height, and color for body text, headings, and more.
-
-@font-family-sans-serif:  "Helvetica Neue", Helvetica, Arial, sans-serif;
-@font-family-serif:       Georgia, "Times New Roman", Times, serif;
-//** Default monospace fonts for `<code>`, `<kbd>`, and `<pre>`.
-@font-family-monospace:   Menlo, Monaco, Consolas, "Courier New", monospace;
-@font-family-base:        @font-family-sans-serif;
-
-@font-size-base:          16px;
-@font-size-large:         ceil((@font-size-base * 1.25)); // ~18px
-@font-size-small:         ceil((@font-size-base * 0.85)); // ~12px
-
-@font-size-h1:            floor((@font-size-base * 2.6)); // ~36px
-@font-size-h2:            floor((@font-size-base * 2.15)); // ~30px
-@font-size-h3:            ceil((@font-size-base * 1.7)); // ~24px
-@font-size-h4:            ceil((@font-size-base * 1.25)); // ~18px
-@font-size-h5:            @font-size-base;
-@font-size-h6:            ceil((@font-size-base * 0.85)); // ~12px
-
-//** Unit-less `line-height` for use in components like buttons.
-@line-height-base:        1.428571429; // 20/14
-//** Computed "line-height" (`font-size` * `line-height`) for use with `margin`, `padding`, etc.
-@line-height-computed:    floor((@font-size-base * @line-height-base)); // ~20px
-
-//** By default, this inherits from the `<body>`.
-@headings-font-family:    inherit;
-@headings-font-weight:    400;
-@headings-line-height:    1.1;
-@headings-color:          inherit;
-
-
-//== Iconography
-//
-//## Specify custom location and filename of the included Glyphicons icon font. Useful for those including Bootstrap via Bower.
-
-//** Load fonts from this directory.
-@icon-font-path:          "../fonts/";
-//** File name for all font files.
-@icon-font-name:          "glyphicons-halflings-regular";
-//** Element ID within SVG icon file.
-@icon-font-svg-id:        "glyphicons_halflingsregular";
-
-
-//== Components
-//
-//## Define common padding and border radius sizes and more. Values based on 14px text and 1.428 line-height (~20px to start).
-
-@padding-base-vertical:     6px;
-@padding-base-horizontal:   12px;
-
-@padding-large-vertical:    10px;
-@padding-large-horizontal:  16px;
-
-@padding-small-vertical:    5px;
-@padding-small-horizontal:  10px;
-
-@padding-xs-vertical:       1px;
-@padding-xs-horizontal:     5px;
-
-@line-height-large:         1.33;
-@line-height-small:         1.5;
-
-@border-radius-base:        3px;
-@border-radius-large:       3px;
-@border-radius-small:       0px;
-
-//** Global color for active items (e.g., navs or dropdowns).
-@component-active-color:    #fff;
-//** Global background color for active items (e.g., navs or dropdowns).
-@component-active-bg:       @brand-primary;
-
-//** Width of the `border` for generating carets that indicator dropdowns.
-@caret-width-base:          4px;
-//** Carets increase slightly in size for larger components.
-@caret-width-large:         5px;
-
-
-//== Tables
-//
-//## Customizes the `.table` component with basic values, each used across all table variations.
-
-//** Padding for `<th>`s and `<td>`s.
-@table-cell-padding:            8px;
-//** Padding for cells in `.table-condensed`.
-@table-condensed-cell-padding:  3px;
-
-//** Default background color used for all tables.
-@table-bg:                      transparent;
-//** Background color used for `.table-striped`.
-@table-bg-accent:               #f9f9f9;
-//** Background color used for `.table-hover`.
-@table-bg-hover:                #f5f5f5;
-@table-bg-active:               @table-bg-hover;
-
-//** Border color for table and cell borders.
-@table-border-color:            #ddd;
-
-
-//== Buttons
-//
-//## For each of Bootstrap's buttons, define text, background and border color.
-
-@btn-font-weight:                normal;
-
-@btn-default-color:              #333;
-@btn-default-bg:                 #fff;
-@btn-default-border:             #ccc;
-
-@btn-primary-color:              #fff;
-@btn-primary-bg:                 @brand-primary;
-@btn-primary-border:             darken(@btn-primary-bg, 5%);
-
-@btn-success-color:              #fff;
-@btn-success-bg:                 @brand-success;
-@btn-success-border:             darken(@btn-success-bg, 5%);
-
-@btn-info-color:                 #fff;
-@btn-info-bg:                    @brand-info;
-@btn-info-border:                darken(@btn-info-bg, 5%);
-
-@btn-warning-color:              #fff;
-@btn-warning-bg:                 @brand-warning;
-@btn-warning-border:             darken(@btn-warning-bg, 5%);
-
-@btn-danger-color:               #fff;
-@btn-danger-bg:                  @brand-danger;
-@btn-danger-border:              darken(@btn-danger-bg, 5%);
-
-@btn-link-disabled-color:        @gray-light;
-
-
-//== Forms
-//
-//##
-
-//** `<input>` background color
-@input-bg:                       #fff;
-//** `<input disabled>` background color
-@input-bg-disabled:              @gray-lighter;
-
-//** Text color for `<input>`s
-@input-color:                    @gray;
-//** `<input>` border color
-@input-border:                   #ccc;
-
-// TODO: Rename `@input-border-radius` to `@input-border-radius-base` in v4
-//** Default `.form-control` border radius
-@input-border-radius:            @border-radius-base;
-//** Large `.form-control` border radius
-@input-border-radius-large:      @border-radius-large;
-//** Small `.form-control` border radius
-@input-border-radius-small:      @border-radius-small;
-
-//** Border color for inputs on focus
-@input-border-focus:             #66afe9;
-
-//** Placeholder text color
-@input-color-placeholder:        @gray-light;
-
-//** Default `.form-control` height
-@input-height-base:              (@line-height-computed + (@padding-base-vertical * 2) + 2);
-//** Large `.form-control` height
-@input-height-large:             (ceil(@font-size-large * @line-height-large) + (@padding-large-vertical * 2) + 2);
-//** Small `.form-control` height
-@input-height-small:             (floor(@font-size-small * @line-height-small) + (@padding-small-vertical * 2) + 2);
-
-@legend-color:                   @gray-dark;
-@legend-border-color:            #e5e5e5;
-
-//** Background color for textual input addons
-@input-group-addon-bg:           @gray-lighter;
-//** Border color for textual input addons
-@input-group-addon-border-color: @input-border;
-
-//** Disabled cursor for form controls and buttons.
-@cursor-disabled:                not-allowed;
-
-
-//== Dropdowns
-//
-//## Dropdown menu container and contents.
-
-//** Background for the dropdown menu.
-@dropdown-bg:                    #fff;
-//** Dropdown menu `border-color`.
-@dropdown-border:                rgba(0,0,0,.15);
-//** Dropdown menu `border-color` **for IE8**.
-@dropdown-fallback-border:       #ccc;
-//** Divider color for between dropdown items.
-@dropdown-divider-bg:            #e5e5e5;
-
-//** Dropdown link text color.
-@dropdown-link-color:            @gray-dark;
-//** Hover color for dropdown links.
-@dropdown-link-hover-color:      darken(@gray-dark, 5%);
-//** Hover background for dropdown links.
-@dropdown-link-hover-bg:         #f5f5f5;
-
-//** Active dropdown menu item text color.
-@dropdown-link-active-color:     @component-active-color;
-//** Active dropdown menu item background color.
-@dropdown-link-active-bg:        @component-active-bg;
-
-//** Disabled dropdown menu item background color.
-@dropdown-link-disabled-color:   @gray-light;
-
-//** Text color for headers within dropdown menus.
-@dropdown-header-color:          @gray-light;
-
-//** Deprecated `@dropdown-caret-color` as of v3.1.0
-@dropdown-caret-color:           #000;
-
-
-//-- Z-index master list
-//
-// Warning: Avoid customizing these values. They're used for a bird's eye view
-// of components dependent on the z-axis and are designed to all work together.
-//
-// Note: These variables are not generated into the Customizer.
-
-@zindex-navbar:            1000;
-@zindex-dropdown:          1000;
-@zindex-popover:           1060;
-@zindex-tooltip:           1070;
-@zindex-navbar-fixed:      1030;
-@zindex-modal:             1040;
-
-
-//== Media queries breakpoints
-//
-//## Define the breakpoints at which your layout will change, adapting to different screen sizes.
-
-// Extra small screen / phone
-//** Deprecated `@screen-xs` as of v3.0.1
-@screen-xs:                  480px;
-//** Deprecated `@screen-xs-min` as of v3.2.0
-@screen-xs-min:              @screen-xs;
-//** Deprecated `@screen-phone` as of v3.0.1
-@screen-phone:               @screen-xs-min;
-
-// Small screen / tablet
-//** Deprecated `@screen-sm` as of v3.0.1
-@screen-sm:                  768px;
-@screen-sm-min:              @screen-sm;
-//** Deprecated `@screen-tablet` as of v3.0.1
-@screen-tablet:              @screen-sm-min;
-
-// Medium screen / desktop
-//** Deprecated `@screen-md` as of v3.0.1
-@screen-md:                  992px;
-@screen-md-min:              @screen-md;
-//** Deprecated `@screen-desktop` as of v3.0.1
-@screen-desktop:             @screen-md-min;
-
-// Large screen / wide desktop
-//** Deprecated `@screen-lg` as of v3.0.1
-@screen-lg:                  1200px;
-@screen-lg-min:              @screen-lg;
-//** Deprecated `@screen-lg-desktop` as of v3.0.1
-@screen-lg-desktop:          @screen-lg-min;
-
-// So media queries don't overlap when required, provide a maximum
-@screen-xs-max:              (@screen-sm-min - 1);
-@screen-sm-max:              (@screen-md-min - 1);
-@screen-md-max:              (@screen-lg-min - 1);
-
-
-//== Grid system
-//
-//## Define your custom responsive grid.
-
-//** Number of columns in the grid.
-@grid-columns:              12;
-//** Padding between columns. Gets divided in half for the left and right.
-@grid-gutter-width:         30px;
-// Navbar collapse
-//** Point at which the navbar becomes uncollapsed.
-@grid-float-breakpoint:     @screen-xs-min;
-//** Point at which the navbar begins collapsing.
-@grid-float-breakpoint-max: (@grid-float-breakpoint - 1);
-
-
-//== Container sizes
-//
-//## Define the maximum width of `.container` for different screen sizes.
-
-// Small screen / tablet
-@container-tablet:             (720px + @grid-gutter-width);
-//** For `@screen-sm-min` and up.
-@container-sm:                 @container-tablet;
-
-// Medium screen / desktop
-@container-desktop:            (940px + @grid-gutter-width);
-//** For `@screen-md-min` and up.
-@container-md:                 @container-desktop;
-
-// Large screen / wide desktop
-@container-large-desktop:      (1140px + @grid-gutter-width);
-//** For `@screen-lg-min` and up.
-@container-lg:                 @container-large-desktop;
-
-
-//== Navbar
-//
-//##
-
-// Basics of a navbar
-@navbar-height:                    50px;
-@navbar-margin-bottom:             @line-height-computed;
-@navbar-border-radius:             @border-radius-base;
-@navbar-padding-horizontal:        floor((@grid-gutter-width / 2));
-@navbar-padding-vertical:          ((@navbar-height - @line-height-computed) / 2);
-@navbar-collapse-max-height:       340px;
-
-@navbar-default-color:             #555;
-@navbar-default-bg:                #f8f8f8;
-@navbar-default-border:            darken(@navbar-default-bg, 6.5%);
-
-// Navbar links
-@navbar-default-link-color:                #555;
-@navbar-default-link-hover-color:          #333;
-@navbar-default-link-hover-bg:             transparent;
-@navbar-default-link-active-color:         #555;
-@navbar-default-link-active-bg:            darken(@navbar-default-bg, 6.5%);
-@navbar-default-link-disabled-color:       #ccc;
-@navbar-default-link-disabled-bg:          transparent;
-
-// Navbar brand label
-@navbar-default-brand-color:               @navbar-default-link-color;
-@navbar-default-brand-hover-color:         darken(@navbar-default-brand-color, 10%);
-@navbar-default-brand-hover-bg:            transparent;
-
-// Navbar toggle
-@navbar-default-toggle-hover-bg:           #ddd;
-@navbar-default-toggle-icon-bar-bg:        #888;
-@navbar-default-toggle-border-color:       #ddd;
-
-
-// Inverted navbar
-// Reset inverted navbar basics
-@navbar-inverse-color:                      @gray-light;
-@navbar-inverse-bg:                         #222;
-@navbar-inverse-border:                     darken(@navbar-inverse-bg, 10%);
-
-// Inverted navbar links
-@navbar-inverse-link-color:                 @gray-light;
-@navbar-inverse-link-hover-color:           #fff;
-@navbar-inverse-link-hover-bg:              transparent;
-@navbar-inverse-link-active-color:          @navbar-inverse-link-hover-color;
-@navbar-inverse-link-active-bg:             darken(@navbar-inverse-bg, 10%);
-@navbar-inverse-link-disabled-color:        #444;
-@navbar-inverse-link-disabled-bg:           transparent;
-
-// Inverted navbar brand label
-@navbar-inverse-brand-color:                @navbar-inverse-link-color;
-@navbar-inverse-brand-hover-color:          #fff;
-@navbar-inverse-brand-hover-bg:             transparent;
-
-// Inverted navbar toggle
-@navbar-inverse-toggle-hover-bg:            #333;
-@navbar-inverse-toggle-icon-bar-bg:         #fff;
-@navbar-inverse-toggle-border-color:        #333;
-
-
-//== Navs
-//
-//##
-
-//=== Shared nav styles
-@nav-link-padding:                          10px 15px;
-@nav-link-hover-bg:                         @gray-lighter;
-
-@nav-disabled-link-color:                   @gray-light;
-@nav-disabled-link-hover-color:             @gray-light;
-
-@nav-open-link-hover-color:                 #fff;
-
-//== Tabs
-@nav-tabs-border-color:                     #ddd;
-
-@nav-tabs-link-hover-border-color:          @gray-lighter;
-
-@nav-tabs-active-link-hover-bg:             @body-bg;
-@nav-tabs-active-link-hover-color:          @gray;
-@nav-tabs-active-link-hover-border-color:   #ddd;
-
-@nav-tabs-justified-link-border-color:            #ddd;
-@nav-tabs-justified-active-link-border-color:     @body-bg;
-
-//== Pills
-@nav-pills-border-radius:                   @border-radius-base;
-@nav-pills-active-link-hover-bg:            @component-active-bg;
-@nav-pills-active-link-hover-color:         @component-active-color;
-
-
-//== Pagination
-//
-//##
-
-@pagination-color:                     @link-color;
-@pagination-bg:                        #fff;
-@pagination-border:                    #ddd;
-
-@pagination-hover-color:               @link-hover-color;
-@pagination-hover-bg:                  @gray-lighter;
-@pagination-hover-border:              #ddd;
-
-@pagination-active-color:              #fff;
-@pagination-active-bg:                 @brand-primary;
-@pagination-active-border:             @brand-primary;
-
-@pagination-disabled-color:            @gray-light;
-@pagination-disabled-bg:               #fff;
-@pagination-disabled-border:           #ddd;
-
-
-//== Pager
-//
-//##
-
-@pager-bg:                             @pagination-bg;
-@pager-border:                         @pagination-border;
-@pager-border-radius:                  15px;
-
-@pager-hover-bg:                       @pagination-hover-bg;
-
-@pager-active-bg:                      @pagination-active-bg;
-@pager-active-color:                   @pagination-active-color;
-
-@pager-disabled-color:                 @pagination-disabled-color;
-
-
-//== Jumbotron
-//
-//##
-
-@jumbotron-padding:              30px;
-@jumbotron-color:                inherit;
-@jumbotron-bg:                   @gray-lighter;
-@jumbotron-heading-color:        inherit;
-@jumbotron-font-size:            ceil((@font-size-base * 1.5));
-
-
-//== Form states and alerts
-//
-//## Define colors for form feedback states and, by default, alerts.
-
-@state-success-text:             darken(spin(@brand-success, -10), 5%);
-@state-success-bg:               @brand-success;
-@state-success-border:           darken(spin(@state-success-bg, -10), 5%);
-
-@state-info-text:                darken(spin(@brand-info, -10), 5%);
-@state-info-bg:                  @brand-info;
-@state-info-border:              darken(spin(@state-info-bg, -10), 5%);
-
-@state-warning-text:             darken(spin(@brand-warning, -10), 5%);
-@state-warning-bg:               @brand-warning;
-@state-warning-border:           darken(spin(@state-warning-bg, -10), 5%);
-
-@state-danger-text:              darken(spin(@brand-danger, -10), 5%);
-@state-danger-bg:                @brand-danger;
-@state-danger-border:            darken(spin(@state-danger-bg, -10), 5%);
-
-
-//== Tooltips
-//
-//##
-
-//** Tooltip max width
-@tooltip-max-width:           200px;
-//** Tooltip text color
-@tooltip-color:               #fff;
-//** Tooltip background color
-@tooltip-bg:                  #000;
-@tooltip-opacity:             .9;
-
-//** Tooltip arrow width
-@tooltip-arrow-width:         5px;
-//** Tooltip arrow color
-@tooltip-arrow-color:         @tooltip-bg;
-
-
-//== Popovers
-//
-//##
-
-//** Popover body background color
-@popover-bg:                          #fff;
-//** Popover maximum width
-@popover-max-width:                   276px;
-//** Popover border color
-@popover-border-color:                rgba(0,0,0,.2);
-//** Popover fallback border color
-@popover-fallback-border-color:       #ccc;
-
-//** Popover title background color
-@popover-title-bg:                    darken(@popover-bg, 3%);
-
-//** Popover arrow width
-@popover-arrow-width:                 10px;
-//** Popover arrow color
-@popover-arrow-color:                 @popover-bg;
-
-//** Popover outer arrow width
-@popover-arrow-outer-width:           (@popover-arrow-width + 1);
-//** Popover outer arrow color
-@popover-arrow-outer-color:           fadein(@popover-border-color, 5%);
-//** Popover outer arrow fallback color
-@popover-arrow-outer-fallback-color:  darken(@popover-fallback-border-color, 20%);
-
-
-//== Labels
-//
-//##
-
-//** Default label background color
-@label-default-bg:            @gray-light;
-//** Primary label background color
-@label-primary-bg:            @brand-primary;
-//** Success label background color
-@label-success-bg:            @brand-success;
-//** Info label background color
-@label-info-bg:               @brand-info;
-//** Warning label background color
-@label-warning-bg:            @brand-warning;
-//** Danger label background color
-@label-danger-bg:             @brand-danger;
-
-//** Default label text color
-@label-color:                 #fff;
-//** Default text color of a linked label
-@label-link-hover-color:      #fff;
-
-
-//== Modals
-//
-//##
-
-//** Padding applied to the modal body
-@modal-inner-padding:         15px;
-
-//** Padding applied to the modal title
-@modal-title-padding:         15px;
-//** Modal title line-height
-@modal-title-line-height:     @line-height-base;
-
-//** Background color of modal content area
-@modal-content-bg:                             #fff;
-//** Modal content border color
-@modal-content-border-color:                   rgba(0,0,0,.2);
-//** Modal content border color **for IE8**
-@modal-content-fallback-border-color:          #999;
-
-//** Modal backdrop background color
-@modal-backdrop-bg:           #000;
-//** Modal backdrop opacity
-@modal-backdrop-opacity:      .5;
-//** Modal header border color
-@modal-header-border-color:   #e5e5e5;
-//** Modal footer border color
-@modal-footer-border-color:   @modal-header-border-color;
-
-@modal-lg:                    900px;
-@modal-md:                    600px;
-@modal-sm:                    300px;
-
-
-//== Alerts
-//
-//## Define alert colors, border radius, and padding.
-
-@alert-padding:               15px;
-@alert-border-radius:         @border-radius-base;
-@alert-link-font-weight:      bold;
-
-@alert-success-bg:            @state-success-bg;
-@alert-success-text:          #fff;
-@alert-success-border:        @state-success-border;
-
-@alert-info-bg:               @state-info-bg;
-@alert-info-text:             #fff;
-@alert-info-border:           @state-info-border;
-
-@alert-warning-bg:            @state-warning-bg;
-@alert-warning-text:          #fff;
-@alert-warning-border:        @state-warning-border;
-
-@alert-danger-bg:             @state-danger-bg;
-@alert-danger-text:           #fff;
-@alert-danger-border:         @state-danger-border;
-
-
-//== Progress bars
-//
-//##
-
-//** Background color of the whole progress component
-@progress-bg:                 #f5f5f5;
-//** Progress bar text color
-@progress-bar-color:          #fff;
-//** Variable for setting rounded corners on progress bar.
-@progress-border-radius:      @border-radius-base;
-
-//** Default progress bar color
-@progress-bar-bg:             @brand-primary;
-//** Success progress bar color
-@progress-bar-success-bg:     @brand-success;
-//** Warning progress bar color
-@progress-bar-warning-bg:     @brand-warning;
-//** Danger progress bar color
-@progress-bar-danger-bg:      @brand-danger;
-//** Info progress bar color
-@progress-bar-info-bg:        @brand-info;
-
-
-//== List group
-//
-//##
-
-//** Background color on `.list-group-item`
-@list-group-bg:                 #fff;
-//** `.list-group-item` border color
-@list-group-border:             #ddd;
-//** List group border radius
-@list-group-border-radius:      @border-radius-base;
-
-//** Background color of single list items on hover
-@list-group-hover-bg:           #f5f5f5;
-//** Text color of active list items
-@list-group-active-color:       @component-active-color;
-//** Background color of active list items
-@list-group-active-bg:          @component-active-bg;
-//** Border color of active list elements
-@list-group-active-border:      @list-group-active-bg;
-//** Text color for content within active list items
-@list-group-active-text-color:  lighten(@list-group-active-bg, 40%);
-
-//** Text color of disabled list items
-@list-group-disabled-color:      @gray-light;
-//** Background color of disabled list items
-@list-group-disabled-bg:         @gray-lighter;
-//** Text color for content within disabled list items
-@list-group-disabled-text-color: @list-group-disabled-color;
-
-@list-group-link-color:         #555;
-@list-group-link-hover-color:   @list-group-link-color;
-@list-group-link-heading-color: #333;
-
-
-//== Panels
-//
-//##
-
-@panel-bg:                    #fff;
-@panel-body-padding:          15px;
-@panel-heading-padding:       10px 15px;
-@panel-footer-padding:        @panel-heading-padding;
-@panel-border-radius:         @border-radius-base;
-
-//** Border color for elements within panels
-@panel-inner-border:          #ddd;
-@panel-footer-bg:             #f5f5f5;
-
-@panel-default-text:          @gray-dark;
-@panel-default-border:        #ddd;
-@panel-default-heading-bg:    #f5f5f5;
-
-@panel-primary-text:          #fff;
-@panel-primary-border:        @brand-primary;
-@panel-primary-heading-bg:    @brand-primary;
-
-@panel-success-text:          #fff;
-@panel-success-border:        @state-success-border;
-@panel-success-heading-bg:    @state-success-bg;
-
-@panel-info-text:             #fff;
-@panel-info-border:           @state-info-border;
-@panel-info-heading-bg:       @state-info-bg;
-
-@panel-warning-text:          #fff;
-@panel-warning-border:        @state-warning-border;
-@panel-warning-heading-bg:    @state-warning-bg;
-
-@panel-danger-text:           #fff;
-@panel-danger-border:         @state-danger-border;
-@panel-danger-heading-bg:     @state-danger-bg;
-
-
-//== Thumbnails
-//
-//##
-
-//** Padding around the thumbnail image
-@thumbnail-padding:           4px;
-//** Thumbnail background color
-@thumbnail-bg:                @body-bg;
-//** Thumbnail border color
-@thumbnail-border:            #ddd;
-//** Thumbnail border radius
-@thumbnail-border-radius:     @border-radius-base;
-
-//** Custom text color for thumbnail captions
-@thumbnail-caption-color:     @text-color;
-//** Padding around the thumbnail caption
-@thumbnail-caption-padding:   9px;
-
-
-//== Wells
-//
-//##
-
-@well-bg:                     #f5f5f5;
-@well-border:                 darken(@well-bg, 7%);
-
-
-//== Badges
-//
-//##
-
-@badge-color:                 #fff;
-//** Linked badge text color on hover
-@badge-link-hover-color:      #fff;
-@badge-bg:                    @gray-light;
-
-//** Badge text color in active nav link
-@badge-active-color:          @link-color;
-//** Badge background color in active nav link
-@badge-active-bg:             #fff;
-
-@badge-font-weight:           bold;
-@badge-line-height:           1;
-@badge-border-radius:         10px;
-
-
-//== Breadcrumbs
-//
-//##
-
-@breadcrumb-padding-vertical:   8px;
-@breadcrumb-padding-horizontal: 15px;
-//** Breadcrumb background color
-@breadcrumb-bg:                 #f5f5f5;
-//** Breadcrumb text color
-@breadcrumb-color:              #ccc;
-//** Text color of current page in the breadcrumb
-@breadcrumb-active-color:       @gray-light;
-//** Textual separator for between breadcrumb elements
-@breadcrumb-separator:          "/";
-
-
-//== Carousel
-//
-//##
-
-@carousel-text-shadow:                        0 1px 2px rgba(0,0,0,.6);
-
-@carousel-control-color:                      #fff;
-@carousel-control-width:                      15%;
-@carousel-control-opacity:                    .5;
-@carousel-control-font-size:                  20px;
-
-@carousel-indicator-active-bg:                #fff;
-@carousel-indicator-border-color:             #fff;
-
-@carousel-caption-color:                      #fff;
-
-
-//== Close
-//
-//##
-
-@close-font-weight:           bold;
-@close-color:                 #000;
-@close-text-shadow:           0 1px 0 #fff;
-
-
-//== Code
-//
-//##
-
-@code-color:                  #c7254e;
-@code-bg:                     #f9f2f4;
-
-@kbd-color:                   #fff;
-@kbd-bg:                      #333;
-
-@pre-bg:                      #f5f5f5;
-@pre-color:                   @gray-dark;
-@pre-border-color:            #ccc;
-@pre-scrollable-max-height:   340px;
-
-
-//== Type
-//
-//##
-
-//** Horizontal offset for forms and lists.
-@component-offset-horizontal: 180px;
-//** Text muted color
-@text-muted:                  @gray-light;
-//** Abbreviations and acronyms border color
-@abbr-border-color:           @gray-light;
-//** Headings small color
-@headings-small-color:        @gray-light;
-//** Blockquote small color
-@blockquote-small-color:      @gray-light;
-//** Blockquote font size
-@blockquote-font-size:        (@font-size-base * 1.25);
-//** Blockquote border color
-@blockquote-border-color:     @gray-lighter;
-//** Page header border color
-@page-header-border-color:    @gray-lighter;
-//** Width of horizontal description list titles
-@dl-horizontal-offset:        @component-offset-horizontal;
-//** Horizontal line color.
-@hr-border:                   @gray-lighter;

internal/config/config.go

@@ -20,6 +20,7 @@ import (
 	"encoding/xml"
 	"fmt"
 	"io"
+	"math/rand"
 	"os"
 	"path/filepath"
 	"reflect"
@@ -37,12 +38,13 @@ var l = logger.DefaultLogger
 const CurrentVersion = 7
 
 type Configuration struct {
-	Version int                   `xml:"version,attr"`
-	Folders []FolderConfiguration `xml:"folder"`
-	Devices []DeviceConfiguration `xml:"device"`
-	GUI     GUIConfiguration      `xml:"gui"`
-	Options OptionsConfiguration  `xml:"options"`
-	XMLName xml.Name              `xml:"configuration" json:"-"`
+	Version        int                   `xml:"version,attr"`
+	Folders        []FolderConfiguration `xml:"folder"`
+	Devices        []DeviceConfiguration `xml:"device"`
+	GUI            GUIConfiguration      `xml:"gui"`
+	Options        OptionsConfiguration  `xml:"options"`
+	IgnoredDevices []protocol.DeviceID   `xml:"ignoredDevice"`
+	XMLName        xml.Name              `xml:"configuration" json:"-"`
 
 	OriginalVersion         int                   `xml:"-" json:"-"` // The version we read from disk, before any conversion
 	Deprecated_Repositories []FolderConfiguration `xml:"repository" json:"-"`
@@ -240,10 +242,13 @@ func (cfg *Configuration) WriteXML(w io.Writer) error {
 func (cfg *Configuration) prepare(myID protocol.DeviceID) {
 	fillNilSlices(&cfg.Options)
 
-	// Initialize an empty slice for folders if the config has none
+	// Initialize an empty slices
 	if cfg.Folders == nil {
 		cfg.Folders = []FolderConfiguration{}
 	}
+	if cfg.IgnoredDevices == nil {
+		cfg.IgnoredDevices = []protocol.DeviceID{}
+	}
 
 	// Check for missing, bad or duplicate folder ID:s
 	var seenFolders = map[string]*FolderConfiguration{}
@@ -369,6 +374,10 @@ func (cfg *Configuration) prepare(myID protocol.DeviceID) {
 
 	cfg.Options.ListenAddress = uniqueStrings(cfg.Options.ListenAddress)
 	cfg.Options.GlobalAnnServers = uniqueStrings(cfg.Options.GlobalAnnServers)
+
+	if cfg.GUI.APIKey == "" {
+		cfg.GUI.APIKey = randomString(32)
+	}
 }
 
 // ChangeRequiresRestart returns true if updating the configuration requires a
@@ -674,3 +683,16 @@ func (l FolderDeviceConfigurationList) Swap(a, b int) {
 func (l FolderDeviceConfigurationList) Len() int {
 	return len(l)
 }
+
+// randomCharset contains the characters that can make up a randomString().
+const randomCharset = "01234567890abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ-"
+
+// randomString returns a string of random characters (taken from
+// randomCharset) of the specified length.
+func randomString(l int) string {
+	bs := make([]byte, l)
+	for i := range bs {
+		bs[i] = randomCharset[rand.Intn(len(randomCharset))]
+	}
+	return string(bs)
+}

internal/config/wrapper.go

@@ -245,6 +245,19 @@ func (w *Wrapper) InvalidateFolder(id string, err string) {
 	}
 }
 
+// Returns whether or not connection attempts from the given device should be
+// silently ignored.
+func (w *Wrapper) IgnoredDevice(id protocol.DeviceID) bool {
+	w.mut.Lock()
+	defer w.mut.Unlock()
+	for _, device := range w.cfg.IgnoredDevices {
+		if device == id {
+			return true
+		}
+	}
+	return false
+}
+
 // Save writes the configuration to disk, and generates a ConfigSaved event.
 func (w *Wrapper) Save() error {
 	fd, err := ioutil.TempFile(filepath.Dir(w.path), "cfg")

internal/files/concurrency_test.go

@@ -144,7 +144,7 @@ func TestConcurrentSetClear(t *testing.T) {
 	var wg sync.WaitGroup
 
 	os.RemoveAll("testdata/concurrent-set-clear.db")
-	db, err := leveldb.OpenFile("testdata/concurrent-set-clear.db", &opt.Options{CachedOpenFiles: 10})
+	db, err := leveldb.OpenFile("testdata/concurrent-set-clear.db", &opt.Options{OpenFilesCacheCapacity: 10})
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -200,7 +200,7 @@ func TestConcurrentSetOnly(t *testing.T) {
 	var wg sync.WaitGroup
 
 	os.RemoveAll("testdata/concurrent-set-only.db")
-	db, err := leveldb.OpenFile("testdata/concurrent-set-only.db", &opt.Options{CachedOpenFiles: 10})
+	db, err := leveldb.OpenFile("testdata/concurrent-set-only.db", &opt.Options{OpenFilesCacheCapacity: 10})
 	if err != nil {
 		t.Fatal(err)
 	}

internal/files/leveldb.go

@@ -594,11 +594,11 @@ func ldbWithAllFolderTruncated(db *leveldb.DB, folder []byte, fn func(device []b
 	}
 }
 
-func ldbGet(db *leveldb.DB, folder, device, file []byte) protocol.FileInfo {
+func ldbGet(db *leveldb.DB, folder, device, file []byte) (protocol.FileInfo, bool) {
 	nk := deviceKey(folder, device, file)
 	bs, err := db.Get(nk, nil)
 	if err == leveldb.ErrNotFound {
-		return protocol.FileInfo{}
+		return protocol.FileInfo{}, false
 	}
 	if err != nil {
 		panic(err)
@@ -609,10 +609,10 @@ func ldbGet(db *leveldb.DB, folder, device, file []byte) protocol.FileInfo {
 	if err != nil {
 		panic(err)
 	}
-	return f
+	return f, true
 }
 
-func ldbGetGlobal(db *leveldb.DB, folder, file []byte) protocol.FileInfo {
+func ldbGetGlobal(db *leveldb.DB, folder, file []byte) (protocol.FileInfo, bool) {
 	k := globalKey(folder, file)
 	snap, err := db.GetSnapshot()
 	if err != nil {
@@ -633,7 +633,7 @@ func ldbGetGlobal(db *leveldb.DB, folder, file []byte) protocol.FileInfo {
 	}
 	bs, err := snap.Get(k, nil)
 	if err == leveldb.ErrNotFound {
-		return protocol.FileInfo{}
+		return protocol.FileInfo{}, false
 	}
 	if err != nil {
 		panic(err)
@@ -663,7 +663,7 @@ func ldbGetGlobal(db *leveldb.DB, folder, file []byte) protocol.FileInfo {
 	if err != nil {
 		panic(err)
 	}
-	return f
+	return f, true
 }
 
 func ldbWithGlobal(db *leveldb.DB, folder []byte, truncate bool, fn fileIterator) {

internal/files/set.go

@@ -118,8 +118,8 @@ func (s *Set) Update(device protocol.DeviceID, fs []protocol.FileInfo) {
 		discards := make([]protocol.FileInfo, 0, len(fs))
 		updates := make([]protocol.FileInfo, 0, len(fs))
 		for _, newFile := range fs {
-			existingFile := ldbGet(s.db, []byte(s.folder), device[:], []byte(newFile.Name))
-			if existingFile.Version <= newFile.Version {
+			existingFile, ok := ldbGet(s.db, []byte(s.folder), device[:], []byte(newFile.Name))
+			if !ok || existingFile.Version <= newFile.Version {
 				discards = append(discards, existingFile)
 				updates = append(updates, newFile)
 			}
@@ -174,16 +174,16 @@ func (s *Set) WithGlobalTruncated(fn fileIterator) {
 	ldbWithGlobal(s.db, []byte(s.folder), true, nativeFileIterator(fn))
 }
 
-func (s *Set) Get(device protocol.DeviceID, file string) protocol.FileInfo {
-	f := ldbGet(s.db, []byte(s.folder), device[:], []byte(osutil.NormalizedFilename(file)))
+func (s *Set) Get(device protocol.DeviceID, file string) (protocol.FileInfo, bool) {
+	f, ok := ldbGet(s.db, []byte(s.folder), device[:], []byte(osutil.NormalizedFilename(file)))
 	f.Name = osutil.NativeFilename(f.Name)
-	return f
+	return f, ok
 }
 
-func (s *Set) GetGlobal(file string) protocol.FileInfo {
-	f := ldbGetGlobal(s.db, []byte(s.folder), []byte(osutil.NormalizedFilename(file)))
+func (s *Set) GetGlobal(file string) (protocol.FileInfo, bool) {
+	f, ok := ldbGetGlobal(s.db, []byte(s.folder), []byte(osutil.NormalizedFilename(file)))
 	f.Name = osutil.NativeFilename(f.Name)
-	return f
+	return f, ok
 }
 
 func (s *Set) Availability(file string) []protocol.DeviceID {

internal/files/set_test.go

@@ -209,27 +209,42 @@ func TestGlobalSet(t *testing.T) {
 		t.Errorf("Need incorrect;\n A: %v !=\n E: %v", n, expectedRemoteNeed)
 	}
 
-	f := m.Get(protocol.LocalDeviceID, "b")
+	f, ok := m.Get(protocol.LocalDeviceID, "b")
+	if !ok {
+		t.Error("Unexpectedly not OK")
+	}
 	if fmt.Sprint(f) != fmt.Sprint(localTot[1]) {
 		t.Errorf("Get incorrect;\n A: %v !=\n E: %v", f, localTot[1])
 	}
 
-	f = m.Get(remoteDevice0, "b")
+	f, ok = m.Get(remoteDevice0, "b")
+	if !ok {
+		t.Error("Unexpectedly not OK")
+	}
 	if fmt.Sprint(f) != fmt.Sprint(remote1[0]) {
 		t.Errorf("Get incorrect;\n A: %v !=\n E: %v", f, remote1[0])
 	}
 
-	f = m.GetGlobal("b")
+	f, ok = m.GetGlobal("b")
+	if !ok {
+		t.Error("Unexpectedly not OK")
+	}
 	if fmt.Sprint(f) != fmt.Sprint(remote1[0]) {
 		t.Errorf("GetGlobal incorrect;\n A: %v !=\n E: %v", f, remote1[0])
 	}
 
-	f = m.Get(protocol.LocalDeviceID, "zz")
+	f, ok = m.Get(protocol.LocalDeviceID, "zz")
+	if ok {
+		t.Error("Unexpectedly OK")
+	}
 	if f.Name != "" {
 		t.Errorf("Get incorrect;\n A: %v !=\n E: %v", f, protocol.FileInfo{})
 	}
 
-	f = m.GetGlobal("zz")
+	f, ok = m.GetGlobal("zz")
+	if ok {
+		t.Error("Unexpectedly OK")
+	}
 	if f.Name != "" {
 		t.Errorf("GetGlobal incorrect;\n A: %v !=\n E: %v", f, protocol.FileInfo{})
 	}

internal/ignore/cache.go

@@ -15,26 +15,11 @@
 
 package ignore
 
-import (
-	"sync"
-	"time"
-)
-
-var (
-	caches   = make(map[string]*cache)
-	cacheMut sync.Mutex
-)
-
-func init() {
-	// Periodically go through the cache and remove cache entries that have
-	// not been touched in the last two hours.
-	go cleanIgnoreCaches(2 * time.Hour)
-}
+import "time"
 
 type cache struct {
 	patterns []Pattern
 	entries  map[string]cacheEntry
-	mut      sync.Mutex
 }
 
 type cacheEntry struct {
@@ -50,46 +35,27 @@ func newCache(patterns []Pattern) *cache {
 }
 
 func (c *cache) clean(d time.Duration) {
-	c.mut.Lock()
 	for k, v := range c.entries {
 		if time.Since(v.access) > d {
 			delete(c.entries, k)
 		}
 	}
-	c.mut.Unlock()
 }
 
 func (c *cache) get(key string) (result, ok bool) {
-	c.mut.Lock()
 	res, ok := c.entries[key]
 	if ok {
 		res.access = time.Now()
 		c.entries[key] = res
 	}
-	c.mut.Unlock()
 	return res.value, ok
 }
 
 func (c *cache) set(key string, val bool) {
-	c.mut.Lock()
 	c.entries[key] = cacheEntry{val, time.Now()}
-	c.mut.Unlock()
 }
 
 func (c *cache) len() int {
-	c.mut.Lock()
 	l := len(c.entries)
-	c.mut.Unlock()
 	return l
 }
-
-func cleanIgnoreCaches(dur time.Duration) {
-	for {
-		time.Sleep(dur)
-		cacheMut.Lock()
-		for _, v := range caches {
-			v.clean(dur)
-		}
-		cacheMut.Unlock()
-	}
-}

internal/ignore/ignore.go

@@ -17,6 +17,8 @@ package ignore
 
 import (
 	"bufio"
+	"bytes"
+	"crypto/md5"
 	"fmt"
 	"io"
 	"os"
@@ -24,6 +26,7 @@ import (
 	"regexp"
 	"strings"
 	"sync"
+	"time"
 
 	"github.com/syncthing/syncthing/internal/fnmatch"
 )
@@ -33,51 +36,76 @@ type Pattern struct {
 	include bool
 }
 
+func (p Pattern) String() string {
+	if p.include {
+		return p.match.String()
+	} else {
+		return "(?exclude)" + p.match.String()
+	}
+}
+
 type Matcher struct {
-	patterns []Pattern
-	matches  *cache
-	mut      sync.Mutex
+	patterns  []Pattern
+	withCache bool
+	matches   *cache
+	curHash   string
+	stop      chan struct{}
+	mut       sync.Mutex
 }
 
-func Load(file string, cache bool) (*Matcher, error) {
-	seen := make(map[string]bool)
-	matcher, err := loadIgnoreFile(file, seen)
-	if !cache || err != nil {
-		return matcher, err
+func New(withCache bool) *Matcher {
+	m := &Matcher{
+		withCache: withCache,
+		stop:      make(chan struct{}),
 	}
-
-	cacheMut.Lock()
-	defer cacheMut.Unlock()
-
-	// Get the current cache object for the given file
-	cached, ok := caches[file]
-	if !ok || !patternsEqual(cached.patterns, matcher.patterns) {
-		// Nothing in cache or a cache mismatch, create a new cache which will
-		// store matches for the given set of patterns.
-		// Initialize oldMatches to indicate that we are interested in
-		// caching.
-		cached = newCache(matcher.patterns)
-		matcher.matches = cached
-		caches[file] = cached
-		return matcher, nil
+	if withCache {
+		go m.clean(2 * time.Hour)
 	}
-
-	// Patterns haven't changed, so we can reuse the old matches, create a new
-	// matches map and update the pointer. (This prevents matches map from
-	// growing indefinately, as we only cache whatever we've matched in the last
-	// iteration, rather than through runtime history)
-	matcher.matches = cached
-	return matcher, nil
+	return m
 }
 
-func Parse(r io.Reader, file string) (*Matcher, error) {
-	seen := map[string]bool{
-		file: true,
+func (m *Matcher) Load(file string) error {
+	// No locking, Parse() does the locking
+
+	fd, err := os.Open(file)
+	if err != nil {
+		// We do a parse with empty patterns to clear out the hash, cache etc.
+		m.Parse(&bytes.Buffer{}, file)
+		return err
 	}
-	return parseIgnoreFile(r, file, seen)
+	defer fd.Close()
+
+	return m.Parse(fd, file)
+}
+
+func (m *Matcher) Parse(r io.Reader, file string) error {
+	m.mut.Lock()
+	defer m.mut.Unlock()
+
+	seen := map[string]bool{file: true}
+	patterns, err := parseIgnoreFile(r, file, seen)
+	// Error is saved and returned at the end. We process the patterns
+	// (possibly blank) anyway.
+
+	newHash := hashPatterns(patterns)
+	if newHash == m.curHash {
+		// We've already loaded exactly these patterns.
+		return err
+	}
+
+	m.curHash = newHash
+	m.patterns = patterns
+	if m.withCache {
+		m.matches = newCache(patterns)
+	}
+
+	return err
 }
 
 func (m *Matcher) Match(file string) (result bool) {
+	m.mut.Lock()
+	defer m.mut.Unlock()
+
 	if len(m.patterns) == 0 {
 		return false
 	}
@@ -108,18 +136,53 @@ func (m *Matcher) Match(file string) (result bool) {
 
 // Patterns return a list of the loaded regexp patterns, as strings
 func (m *Matcher) Patterns() []string {
+	m.mut.Lock()
+	defer m.mut.Unlock()
+
 	patterns := make([]string, len(m.patterns))
 	for i, pat := range m.patterns {
-		if pat.include {
-			patterns[i] = pat.match.String()
-		} else {
-			patterns[i] = "(?exclude)" + pat.match.String()
-		}
+		patterns[i] = pat.String()
 	}
 	return patterns
 }
 
-func loadIgnoreFile(file string, seen map[string]bool) (*Matcher, error) {
+func (m *Matcher) Hash() string {
+	m.mut.Lock()
+	defer m.mut.Unlock()
+	return m.curHash
+}
+
+func (m *Matcher) Stop() {
+	close(m.stop)
+}
+
+func (m *Matcher) clean(d time.Duration) {
+	t := time.NewTimer(d / 2)
+	for {
+		select {
+		case <-m.stop:
+			return
+		case <-t.C:
+			m.mut.Lock()
+			if m.matches != nil {
+				m.matches.clean(d)
+			}
+			t.Reset(d / 2)
+			m.mut.Unlock()
+		}
+	}
+}
+
+func hashPatterns(patterns []Pattern) string {
+	h := md5.New()
+	for _, pat := range patterns {
+		h.Write([]byte(pat.String()))
+		h.Write([]byte("\n"))
+	}
+	return fmt.Sprintf("%x", h.Sum(nil))
+}
+
+func loadIgnoreFile(file string, seen map[string]bool) ([]Pattern, error) {
 	if seen[file] {
 		return nil, fmt.Errorf("Multiple include of ignore file %q", file)
 	}
@@ -134,8 +197,8 @@ func loadIgnoreFile(file string, seen map[string]bool) (*Matcher, error) {
 	return parseIgnoreFile(fd, file, seen)
 }
 
-func parseIgnoreFile(fd io.Reader, currentFile string, seen map[string]bool) (*Matcher, error) {
-	var exps Matcher
+func parseIgnoreFile(fd io.Reader, currentFile string, seen map[string]bool) ([]Pattern, error) {
+	var patterns []Pattern
 
 	addPattern := func(line string) error {
 		include := true
@@ -150,27 +213,27 @@ func parseIgnoreFile(fd io.Reader, currentFile string, seen map[string]bool) (*M
 			if err != nil {
 				return fmt.Errorf("Invalid pattern %q in ignore file", line)
 			}
-			exps.patterns = append(exps.patterns, Pattern{exp, include})
+			patterns = append(patterns, Pattern{exp, include})
 		} else if strings.HasPrefix(line, "**/") {
 			// Add the pattern as is, and without **/ so it matches in current dir
 			exp, err := fnmatch.Convert(line, fnmatch.FNM_PATHNAME)
 			if err != nil {
 				return fmt.Errorf("Invalid pattern %q in ignore file", line)
 			}
-			exps.patterns = append(exps.patterns, Pattern{exp, include})
+			patterns = append(patterns, Pattern{exp, include})
 
 			exp, err = fnmatch.Convert(line[3:], fnmatch.FNM_PATHNAME)
 			if err != nil {
 				return fmt.Errorf("Invalid pattern %q in ignore file", line)
 			}
-			exps.patterns = append(exps.patterns, Pattern{exp, include})
+			patterns = append(patterns, Pattern{exp, include})
 		} else if strings.HasPrefix(line, "#include ") {
 			includeFile := filepath.Join(filepath.Dir(currentFile), line[len("#include "):])
 			includes, err := loadIgnoreFile(includeFile, seen)
 			if err != nil {
 				return err
 			}
-			exps.patterns = append(exps.patterns, includes.patterns...)
+			patterns = append(patterns, includes...)
 		} else {
 			// Path name or pattern, add it so it matches files both in
 			// current directory and subdirs.
@@ -178,13 +241,13 @@ func parseIgnoreFile(fd io.Reader, currentFile string, seen map[string]bool) (*M
 			if err != nil {
 				return fmt.Errorf("Invalid pattern %q in ignore file", line)
 			}
-			exps.patterns = append(exps.patterns, Pattern{exp, include})
+			patterns = append(patterns, Pattern{exp, include})
 
 			exp, err = fnmatch.Convert("**/"+line, fnmatch.FNM_PATHNAME)
 			if err != nil {
 				return fmt.Errorf("Invalid pattern %q in ignore file", line)
 			}
-			exps.patterns = append(exps.patterns, Pattern{exp, include})
+			patterns = append(patterns, Pattern{exp, include})
 		}
 		return nil
 	}
@@ -218,17 +281,5 @@ func parseIgnoreFile(fd io.Reader, currentFile string, seen map[string]bool) (*M
 		}
 	}
 
-	return &exps, nil
-}
-
-func patternsEqual(a, b []Pattern) bool {
-	if len(a) != len(b) {
-		return false
-	}
-	for i := range a {
-		if a[i].include != b[i].include || a[i].match.String() != b[i].match.String() {
-			return false
-		}
-	}
-	return true
+	return patterns, nil
 }

internal/ignore/ignore_test.go

@@ -25,7 +25,8 @@ import (
 )
 
 func TestIgnore(t *testing.T) {
-	pats, err := Load("testdata/.stignore", true)
+	pats := New(true)
+	err := pats.Load("testdata/.stignore")
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -74,7 +75,8 @@ func TestExcludes(t *testing.T) {
 	i*2
 	!ign2
 	`
-	pats, err := Parse(bytes.NewBufferString(stignore), ".stignore")
+	pats := New(true)
+	err := pats.Parse(bytes.NewBufferString(stignore), ".stignore")
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -114,15 +116,19 @@ func TestBadPatterns(t *testing.T) {
 	}
 
 	for _, pat := range badPatterns {
-		parsed, err := Parse(bytes.NewBufferString(pat), ".stignore")
+		err := New(true).Parse(bytes.NewBufferString(pat), ".stignore")
 		if err == nil {
-			t.Errorf("No error for pattern %q: %v", pat, parsed)
+			t.Errorf("No error for pattern %q", pat)
 		}
 	}
 }
 
 func TestCaseSensitivity(t *testing.T) {
-	ign, _ := Parse(bytes.NewBufferString("test"), ".stignore")
+	ign := New(true)
+	err := ign.Parse(bytes.NewBufferString("test"), ".stignore")
+	if err != nil {
+		t.Error(err)
+	}
 
 	match := []string{"test"}
 	dontMatch := []string{"foo"}
@@ -170,7 +176,8 @@ func TestCaching(t *testing.T) {
 
 	fd2.WriteString("/y/\n")
 
-	pats, err := Load(fd1.Name(), true)
+	pats := New(true)
+	err = pats.Load(fd1.Name())
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -193,9 +200,9 @@ func TestCaching(t *testing.T) {
 		t.Fatal("Expected 4 cached results")
 	}
 
-	// Reload file, expect old outcomes to be provided
+	// Reload file, expect old outcomes to be preserved
 
-	pats, err = Load(fd1.Name(), true)
+	err = pats.Load(fd1.Name())
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -207,7 +214,7 @@ func TestCaching(t *testing.T) {
 
 	fd2.WriteString("/z/\n")
 
-	pats, err = Load(fd1.Name(), true)
+	err = pats.Load(fd1.Name())
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -222,9 +229,9 @@ func TestCaching(t *testing.T) {
 		pats.Match(letter)
 	}
 
-	// Verify that outcomes provided on next laod
+	// Verify that outcomes preserved on next laod
 
-	pats, err = Load(fd1.Name(), true)
+	err = pats.Load(fd1.Name())
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -236,7 +243,7 @@ func TestCaching(t *testing.T) {
 
 	fd1.WriteString("/a/\n")
 
-	pats, err = Load(fd1.Name(), true)
+	err = pats.Load(fd1.Name())
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -252,7 +259,7 @@ func TestCaching(t *testing.T) {
 
 	// Verify that outcomes provided on next laod
 
-	pats, err = Load(fd1.Name(), true)
+	err = pats.Load(fd1.Name())
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -273,7 +280,11 @@ func TestCommentsAndBlankLines(t *testing.T) {
 
 
 	`
-	pats, _ := Parse(bytes.NewBufferString(stignore), ".stignore")
+	pats := New(true)
+	err := pats.Parse(bytes.NewBufferString(stignore), ".stignore")
+	if err != nil {
+		t.Error(err)
+	}
 	if len(pats.patterns) > 0 {
 		t.Errorf("Expected no patterns")
 	}
@@ -297,7 +308,11 @@ flamingo
 *.crow
 *.crow
 	`
-	pats, _ := Parse(bytes.NewBufferString(stignore), ".stignore")
+	pats := New(false)
+	err := pats.Parse(bytes.NewBufferString(stignore), ".stignore")
+	if err != nil {
+		b.Error(err)
+	}
 
 	b.ResetTimer()
 	for i := 0; i < b.N; i++ {
@@ -335,7 +350,8 @@ flamingo
 	}
 
 	// Load the patterns
-	pats, err := Load(fd.Name(), true)
+	pats := New(true)
+	err = pats.Load(fd.Name())
 	if err != nil {
 		b.Fatal(err)
 	}
@@ -344,7 +360,7 @@ flamingo
 
 	// This load should now load the cached outcomes as the set of patterns
 	// has not changed.
-	pats, err = Load(fd.Name(), true)
+	err = pats.Load(fd.Name())
 	if err != nil {
 		b.Fatal(err)
 	}
@@ -353,3 +369,152 @@ flamingo
 		result = pats.Match("filename")
 	}
 }
+
+func TestCacheReload(t *testing.T) {
+	fd, err := ioutil.TempFile("", "")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	defer fd.Close()
+	defer os.Remove(fd.Name())
+
+	// Ignore file matches f1 and f2
+
+	_, err = fd.WriteString("f1\nf2\n")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	pats := New(true)
+	err = pats.Load(fd.Name())
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	// Verify that both are ignored
+
+	if !pats.Match("f1") {
+		t.Error("Unexpected non-match for f1")
+	}
+	if !pats.Match("f2") {
+		t.Error("Unexpected non-match for f2")
+	}
+	if pats.Match("f3") {
+		t.Error("Unexpected match for f3")
+	}
+
+	// Rewrite file to match f1 and f3
+
+	err = fd.Truncate(0)
+	if err != nil {
+		t.Fatal(err)
+	}
+	_, err = fd.Seek(0, os.SEEK_SET)
+	if err != nil {
+		t.Fatal(err)
+	}
+	_, err = fd.WriteString("f1\nf3\n")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	err = pats.Load(fd.Name())
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	// Verify that the new patterns are in effect
+
+	if !pats.Match("f1") {
+		t.Error("Unexpected non-match for f1")
+	}
+	if pats.Match("f2") {
+		t.Error("Unexpected match for f2")
+	}
+	if !pats.Match("f3") {
+		t.Error("Unexpected non-match for f3")
+	}
+}
+
+func TestHash(t *testing.T) {
+	p1 := New(true)
+	err := p1.Load("testdata/.stignore")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	// Same list of patterns as testdata/.stignore, after expansion
+	stignore := `
+	dir2/dfile
+	dir3
+	bfile
+	dir1/cfile
+	**/efile
+	/ffile
+	lost+found
+	`
+	p2 := New(true)
+	err = p2.Parse(bytes.NewBufferString(stignore), ".stignore")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	// Not same list of patterns
+	stignore = `
+	dir2/dfile
+	dir3
+	bfile
+	dir1/cfile
+	/ffile
+	lost+found
+	`
+	p3 := New(true)
+	err = p3.Parse(bytes.NewBufferString(stignore), ".stignore")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	if p1.Hash() == "" {
+		t.Error("p1 hash blank")
+	}
+	if p2.Hash() == "" {
+		t.Error("p2 hash blank")
+	}
+	if p3.Hash() == "" {
+		t.Error("p3 hash blank")
+	}
+	if p1.Hash() != p2.Hash() {
+		t.Error("p1-p2 hashes differ")
+	}
+	if p1.Hash() == p3.Hash() {
+		t.Error("p1-p3 hashes same")
+	}
+}
+
+func TestHashOfEmpty(t *testing.T) {
+	p1 := New(true)
+	err := p1.Load("testdata/.stignore")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	firstHash := p1.Hash()
+
+	// Reloading with a non-existent file should empty the patterns and
+	// recalculate the hash. d41d8cd98f00b204e9800998ecf8427e is the md5 of
+	// nothing.
+
+	p1.Load("file/does/not/exist")
+	secondHash := p1.Hash()
+
+	if firstHash == secondHash {
+		t.Error("hash did not change")
+	}
+	if secondHash != "d41d8cd98f00b204e9800998ecf8427e" {
+		t.Error("second hash is not hash of empty string")
+	}
+	if len(p1.patterns) != 0 {
+		t.Error("there are more than zero patterns")
+	}
+}

internal/model/model.go

@@ -79,6 +79,8 @@ const (
 type service interface {
 	Serve()
 	Stop()
+	Jobs() ([]string, []string) // In progress, Queued
+	BringToFront(string)
 }
 
 type Model struct {
@@ -189,6 +191,7 @@ func (m *Model) StartFolderRW(folder string) {
 		copiers:         cfg.Copiers,
 		pullers:         cfg.Pullers,
 		finishers:       cfg.Finishers,
+		queue:           newJobQueue(),
 	}
 	m.folderRunners[folder] = p
 	m.fmut.Unlock()
@@ -416,22 +419,54 @@ func (m *Model) NeedSize(folder string) (files int, bytes int64) {
 	return
 }
 
-// NeedFiles returns the list of currently needed files, stopping at maxFiles
-// files. Limit <= 0 is ignored.
-func (m *Model) NeedFolderFilesLimited(folder string, maxFiles int) []protocol.FileInfoTruncated {
+// NeedFiles returns the list of currently needed files in progress, queued,
+// and to be queued on next puller iteration. Also takes a soft cap which is
+// only respected when adding files from the model rather than the runner queue.
+func (m *Model) NeedFolderFiles(folder string, max int) ([]protocol.FileInfoTruncated, []protocol.FileInfoTruncated, []protocol.FileInfoTruncated) {
 	defer m.leveldbPanicWorkaround()
 
 	m.fmut.RLock()
 	defer m.fmut.RUnlock()
 	if rf, ok := m.folderFiles[folder]; ok {
-		fs := make([]protocol.FileInfoTruncated, 0, maxFiles)
-		rf.WithNeedTruncated(protocol.LocalDeviceID, func(f protocol.FileIntf) bool {
-			fs = append(fs, f.(protocol.FileInfoTruncated))
-			return maxFiles <= 0 || len(fs) < maxFiles
-		})
-		return fs
+		var progress, queued, rest []protocol.FileInfoTruncated
+		var seen map[string]bool
+
+		runner, ok := m.folderRunners[folder]
+		if ok {
+			progressNames, queuedNames := runner.Jobs()
+
+			progress = make([]protocol.FileInfoTruncated, len(progressNames))
+			queued = make([]protocol.FileInfoTruncated, len(queuedNames))
+			seen = make(map[string]bool, len(progressNames)+len(queuedNames))
+
+			for i, name := range progressNames {
+				if f, ok := rf.GetGlobal(name); ok {
+					progress[i] = f.ToTruncated() /// XXX: Should implement GetGlobalTruncated directly
+					seen[name] = true
+				}
+			}
+
+			for i, name := range queuedNames {
+				if f, ok := rf.GetGlobal(name); ok {
+					queued[i] = f.ToTruncated() /// XXX: Should implement GetGlobalTruncated directly
+					seen[name] = true
+				}
+			}
+		}
+		left := max - len(progress) - len(queued)
+		if max < 1 || left > 0 {
+			rf.WithNeedTruncated(protocol.LocalDeviceID, func(f protocol.FileIntf) bool {
+				left--
+				ft := f.(protocol.FileInfoTruncated)
+				if !seen[ft.Name] {
+					rest = append(rest, ft)
+				}
+				return max < 1 || left > 0
+			})
+		}
+		return progress, queued, rest
 	}
-	return nil
+	return nil, nil, nil
 }
 
 // Index is called when a new device is connected and we receive their full index.
@@ -446,13 +481,12 @@ func (m *Model) Index(deviceID protocol.DeviceID, folder string, fs []protocol.F
 			"folder": folder,
 			"device": deviceID.String(),
 		})
-		l.Warnf("Unexpected folder ID %q sent from device %q; ensure that the folder exists and that this device is selected under \"Share With\" in the folder configuration.", folder, deviceID)
+		l.Infof("Unexpected folder ID %q sent from device %q; ensure that the folder exists and that this device is selected under \"Share With\" in the folder configuration.", folder, deviceID)
 		return
 	}
 
 	m.fmut.RLock()
 	files, ok := m.folderFiles[folder]
-	ignores, _ := m.folderIgnores[folder]
 	m.fmut.RUnlock()
 
 	if !ok {
@@ -461,9 +495,9 @@ func (m *Model) Index(deviceID protocol.DeviceID, folder string, fs []protocol.F
 
 	for i := 0; i < len(fs); {
 		lamport.Default.Tick(fs[i].Version)
-		if (ignores != nil && ignores.Match(fs[i].Name)) || symlinkInvalid(fs[i].IsSymlink()) {
+		if symlinkInvalid(fs[i].IsSymlink()) {
 			if debug {
-				l.Debugln("dropping update for ignored/unsupported symlink", fs[i])
+				l.Debugln("dropping update for unsupported symlink", fs[i])
 			}
 			fs[i] = fs[len(fs)-1]
 			fs = fs[:len(fs)-1]
@@ -496,7 +530,6 @@ func (m *Model) IndexUpdate(deviceID protocol.DeviceID, folder string, fs []prot
 
 	m.fmut.RLock()
 	files, ok := m.folderFiles[folder]
-	ignores, _ := m.folderIgnores[folder]
 	m.fmut.RUnlock()
 
 	if !ok {
@@ -505,9 +538,9 @@ func (m *Model) IndexUpdate(deviceID protocol.DeviceID, folder string, fs []prot
 
 	for i := 0; i < len(fs); {
 		lamport.Default.Tick(fs[i].Version)
-		if (ignores != nil && ignores.Match(fs[i].Name)) || symlinkInvalid(fs[i].IsSymlink()) {
+		if symlinkInvalid(fs[i].IsSymlink()) {
 			if debug {
-				l.Debugln("dropping update for ignored/unsupported symlink", fs[i])
+				l.Debugln("dropping update for unsupported symlink", fs[i])
 			}
 			fs[i] = fs[len(fs)-1]
 			fs = fs[:len(fs)-1]
@@ -675,7 +708,11 @@ func (m *Model) Request(deviceID protocol.DeviceID, folder, name string, offset
 		return nil, ErrNoSuchFile
 	}
 
-	lf := r.Get(protocol.LocalDeviceID, name)
+	lf, ok := r.Get(protocol.LocalDeviceID, name)
+	if !ok {
+		return nil, ErrNoSuchFile
+	}
+
 	if lf.IsInvalid() || lf.IsDeleted() {
 		if debug {
 			l.Debugf("%v REQ(in): %s: %q / %q o=%d s=%d; invalid: %v", m, deviceID, folder, name, offset, size, lf)
@@ -730,18 +767,18 @@ func (m *Model) ReplaceLocal(folder string, fs []protocol.FileInfo) {
 	m.fmut.RUnlock()
 }
 
-func (m *Model) CurrentFolderFile(folder string, file string) protocol.FileInfo {
+func (m *Model) CurrentFolderFile(folder string, file string) (protocol.FileInfo, bool) {
 	m.fmut.RLock()
-	f := m.folderFiles[folder].Get(protocol.LocalDeviceID, file)
+	f, ok := m.folderFiles[folder].Get(protocol.LocalDeviceID, file)
 	m.fmut.RUnlock()
-	return f
+	return f, ok
 }
 
-func (m *Model) CurrentGlobalFile(folder string, file string) protocol.FileInfo {
+func (m *Model) CurrentGlobalFile(folder string, file string) (protocol.FileInfo, bool) {
 	m.fmut.RLock()
-	f := m.folderFiles[folder].GetGlobal(file)
+	f, ok := m.folderFiles[folder].GetGlobal(file)
 	m.fmut.RUnlock()
-	return f
+	return f, ok
 }
 
 type cFiler struct {
@@ -750,7 +787,7 @@ type cFiler struct {
 }
 
 // Implements scanner.CurrentFiler
-func (cf cFiler) CurrentFile(file string) protocol.FileInfo {
+func (cf cFiler) CurrentFile(file string) (protocol.FileInfo, bool) {
 	return cf.m.CurrentFolderFile(cf.r, file)
 }
 
@@ -1040,7 +1077,8 @@ func (m *Model) AddFolder(cfg config.FolderConfiguration) {
 		m.deviceFolders[device.DeviceID] = append(m.deviceFolders[device.DeviceID], cfg.ID)
 	}
 
-	ignores, _ := ignore.Load(filepath.Join(cfg.Path, ".stignore"), m.cfg.Options().CacheIgnoredFiles)
+	ignores := ignore.New(m.cfg.Options().CacheIgnoredFiles)
+	_ = ignores.Load(filepath.Join(cfg.Path, ".stignore")) // Ignore error, there might not be an .stignore
 	m.folderIgnores[cfg.ID] = ignores
 
 	m.addedFolder = true
@@ -1081,25 +1119,25 @@ func (m *Model) ScanFolderSub(folder, sub string) error {
 
 	m.fmut.Lock()
 	fs, ok := m.folderFiles[folder]
-	dir := m.folderCfgs[folder].Path
+	folderCfg := m.folderCfgs[folder]
+	ignores := m.folderIgnores[folder]
+	m.fmut.Unlock()
 
-	ignores, _ := ignore.Load(filepath.Join(dir, ".stignore"), m.cfg.Options().CacheIgnoredFiles)
-	m.folderIgnores[folder] = ignores
+	if !ok {
+		return errors.New("no such folder")
+	}
+
+	_ = ignores.Load(filepath.Join(folderCfg.Path, ".stignore")) // Ignore error, there might not be an .stignore
 
 	w := &scanner.Walker{
-		Dir:          dir,
+		Dir:          folderCfg.Path,
 		Sub:          sub,
 		Matcher:      ignores,
 		BlockSize:    protocol.BlockSize,
 		TempNamer:    defTempNamer,
 		TempLifetime: time.Duration(m.cfg.Options().KeepTemporariesH) * time.Hour,
 		CurrentFiler: cFiler{m, folder},
-		IgnorePerms:  m.folderCfgs[folder].IgnorePerms,
-	}
-	m.fmut.Unlock()
-
-	if !ok {
-		return errors.New("no such folder")
+		IgnorePerms:  folderCfg.IgnorePerms,
 	}
 
 	m.setState(folder, FolderScanning)
@@ -1170,7 +1208,7 @@ func (m *Model) ScanFolderSub(folder, sub string) error {
 					"size":     f.Size(),
 				})
 				batch = append(batch, nf)
-			} else if _, err := os.Lstat(filepath.Join(dir, f.Name)); err != nil && os.IsNotExist(err) {
+			} else if _, err := os.Lstat(filepath.Join(folderCfg.Path, f.Name)); err != nil && os.IsNotExist(err) {
 				// File has been deleted
 				nf := protocol.FileInfo{
 					Name:     f.Name,
@@ -1279,8 +1317,8 @@ func (m *Model) Override(folder string) {
 			batch = batch[:0]
 		}
 
-		have := fs.Get(protocol.LocalDeviceID, need.Name)
-		if have.Name != need.Name {
+		have, ok := fs.Get(protocol.LocalDeviceID, need.Name)
+		if !ok || have.Name != need.Name {
 			// We are missing the file
 			need.Flags |= protocol.FlagDeleted
 			need.Blocks = nil
@@ -1337,9 +1375,9 @@ func (m *Model) RemoteLocalVersion(folder string) uint64 {
 	return ver
 }
 
-func (m *Model) availability(folder string, file string) []protocol.DeviceID {
+func (m *Model) availability(folder, file string) []protocol.DeviceID {
 	// Acquire this lock first, as the value returned from foldersFiles can
-	// gen heavily modified on Close()
+	// get heavily modified on Close()
 	m.pmut.RLock()
 	defer m.pmut.RUnlock()
 
@@ -1360,6 +1398,17 @@ func (m *Model) availability(folder string, file string) []protocol.DeviceID {
 	return availableDevices
 }
 
+// Bump the given files priority in the job queue
+func (m *Model) BringToFront(folder, file string) {
+	m.pmut.RLock()
+	defer m.pmut.RUnlock()
+
+	runner, ok := m.folderRunners[folder]
+	if ok {
+		runner.BringToFront(file)
+	}
+}
+
 func (m *Model) String() string {
 	return fmt.Sprintf("model@%p", m)
 }

internal/model/puller.go

@@ -16,11 +16,10 @@
 package model
 
 import (
-	"bytes"
-	"crypto/sha256"
 	"errors"
 	"fmt"
 	"io/ioutil"
+	"math/rand"
 	"os"
 	"path/filepath"
 	"sync"
@@ -30,6 +29,7 @@ import (
 
 	"github.com/syncthing/syncthing/internal/config"
 	"github.com/syncthing/syncthing/internal/events"
+	"github.com/syncthing/syncthing/internal/ignore"
 	"github.com/syncthing/syncthing/internal/osutil"
 	"github.com/syncthing/syncthing/internal/protocol"
 	"github.com/syncthing/syncthing/internal/scanner"
@@ -77,6 +77,7 @@ type Puller struct {
 	copiers         int
 	pullers         int
 	finishers       int
+	queue           *jobQueue
 }
 
 // Serve will run scans and pulls. It will return when Stop()ed or on a
@@ -100,6 +101,7 @@ func (p *Puller) Serve() {
 	}()
 
 	var prevVer uint64
+	var prevIgnoreHash string
 
 	// We don't start pulling files until a scan has been completed.
 	initialScanCompleted := false
@@ -125,6 +127,20 @@ loop:
 				continue
 			}
 
+			p.model.fmut.RLock()
+			curIgnores := p.model.folderIgnores[p.folder]
+			p.model.fmut.RUnlock()
+
+			if newHash := curIgnores.Hash(); newHash != prevIgnoreHash {
+				// The ignore patterns have changed. We need to re-evaluate if
+				// there are files we need now that were ignored before.
+				if debug {
+					l.Debugln(p, "ignore patterns have changed, resetting prevVer")
+				}
+				prevVer = 0
+				prevIgnoreHash = newHash
+			}
+
 			// RemoteLocalVersion() is a fast call, doesn't touch the database.
 			curVer := p.model.RemoteLocalVersion(p.folder)
 			if curVer == prevVer {
@@ -140,16 +156,10 @@ loop:
 			}
 			p.model.setState(p.folder, FolderSyncing)
 			tries := 0
-			checksum := false
 			for {
 				tries++
-				// Last resort mode, to get around corrupt/invalid block maps.
-				if tries == 10 {
-					l.Infoln("Desperation mode ON")
-					checksum = true
-				}
 
-				changed := p.pullerIteration(checksum)
+				changed := p.pullerIteration(curIgnores)
 				if debug {
 					l.Debugln(p, "changed", changed)
 				}
@@ -167,7 +177,7 @@ loop:
 						// them, but at the same time we have the local
 						// version that includes those files in curVer. So we
 						// catch the case that localVersion might have
-						// decresed here.
+						// decreased here.
 						l.Debugln(p, "adjusting curVer", lv)
 						curVer = lv
 					}
@@ -208,10 +218,14 @@ loop:
 			}
 			p.model.setState(p.folder, FolderIdle)
 			if p.scanIntv > 0 {
+				// Sleep a random time between 3/4 and 5/4 of the configured interval.
+				sleepNanos := (p.scanIntv.Nanoseconds()*3 + rand.Int63n(2*p.scanIntv.Nanoseconds())) / 4
+				intv := time.Duration(sleepNanos) * time.Nanosecond
+
 				if debug {
-					l.Debugln(p, "next rescan in", p.scanIntv)
+					l.Debugln(p, "next rescan in", intv)
 				}
-				scanTimer.Reset(p.scanIntv)
+				scanTimer.Reset(intv)
 			}
 			if !initialScanCompleted {
 				l.Infoln("Completed initial scan (rw) of folder", p.folder)
@@ -233,7 +247,7 @@ func (p *Puller) String() string {
 // returns the number items that should have been synced (even those that
 // might have failed). One puller iteration handles all files currently
 // flagged as needed in the folder.
-func (p *Puller) pullerIteration(checksum bool) int {
+func (p *Puller) pullerIteration(ignores *ignore.Matcher) int {
 	pullChan := make(chan pullBlockState)
 	copyChan := make(chan copyBlocksState)
 	finisherChan := make(chan *sharedPullerState)
@@ -250,7 +264,7 @@ func (p *Puller) pullerIteration(checksum bool) int {
 		copyWg.Add(1)
 		go func() {
 			// copierRoutine finishes when copyChan is closed
-			p.copierRoutine(copyChan, pullChan, finisherChan, checksum)
+			p.copierRoutine(copyChan, pullChan, finisherChan)
 			copyWg.Done()
 		}()
 	}
@@ -298,6 +312,11 @@ func (p *Puller) pullerIteration(checksum bool) int {
 
 		file := intf.(protocol.FileInfo)
 
+		if ignores.Match(file.Name) {
+			// This is an ignored file. Skip it, continue iteration.
+			return true
+		}
+
 		events.Default.Log(events.ItemStarted, map[string]string{
 			"folder": p.folder,
 			"item":   file.Name,
@@ -316,15 +335,27 @@ func (p *Puller) pullerIteration(checksum bool) int {
 			p.handleDir(file)
 		default:
 			// A new or changed file or symlink. This is the only case where we
-			// do stuff in the background; the other three are done
-			// synchronously.
-			p.handleFile(file, copyChan, finisherChan)
+			// do stuff concurrently in the background
+			p.queue.Push(file.Name)
 		}
 
 		changed++
 		return true
 	})
 
+	for {
+		fileName, ok := p.queue.Pop()
+		if !ok {
+			break
+		}
+		if f, ok := p.model.CurrentGlobalFile(p.folder, fileName); ok {
+			p.handleFile(f, copyChan, finisherChan)
+		} else {
+			// File is no longer in the index. Mark it as done and drop it.
+			p.queue.Done(fileName)
+		}
+	}
+
 	// Signal copy and puller routines that we are done with the in data for
 	// this iteration. Wait for them to finish.
 	close(copyChan)
@@ -359,7 +390,7 @@ func (p *Puller) handleDir(file protocol.FileInfo) {
 	}
 
 	if debug {
-		curFile := p.model.CurrentFolderFile(p.folder, file.Name)
+		curFile, _ := p.model.CurrentFolderFile(p.folder, file.Name)
 		l.Debugf("need dir\n\t%v\n\t%v", file, curFile)
 	}
 
@@ -453,15 +484,16 @@ func (p *Puller) deleteFile(file protocol.FileInfo) {
 // handleFile queues the copies and pulls as necessary for a single new or
 // changed file.
 func (p *Puller) handleFile(file protocol.FileInfo, copyChan chan<- copyBlocksState, finisherChan chan<- *sharedPullerState) {
-	curFile := p.model.CurrentFolderFile(p.folder, file.Name)
+	curFile, ok := p.model.CurrentFolderFile(p.folder, file.Name)
 
-	if len(curFile.Blocks) == len(file.Blocks) && scanner.BlocksEqual(curFile.Blocks, file.Blocks) {
+	if ok && len(curFile.Blocks) == len(file.Blocks) && scanner.BlocksEqual(curFile.Blocks, file.Blocks) {
 		// We are supposed to copy the entire file, and then fetch nothing. We
 		// are only updating metadata, so we don't actually *need* to make the
 		// copy.
 		if debug {
 			l.Debugln(p, "taking shortcut on", file.Name)
 		}
+		p.queue.Done(file.Name)
 		if file.IsSymlink() {
 			p.shortcutSymlink(curFile, file)
 		} else {
@@ -577,7 +609,7 @@ func (p *Puller) shortcutSymlink(curFile, file protocol.FileInfo) {
 
 // copierRoutine reads copierStates until the in channel closes and performs
 // the relevant copies when possible, or passes it to the puller routine.
-func (p *Puller) copierRoutine(in <-chan copyBlocksState, pullChan chan<- pullBlockState, out chan<- *sharedPullerState, checksum bool) {
+func (p *Puller) copierRoutine(in <-chan copyBlocksState, pullChan chan<- pullBlockState, out chan<- *sharedPullerState) {
 	buf := make([]byte, protocol.BlockSize)
 
 nextFile:
@@ -613,7 +645,6 @@ nextFile:
 		}
 		p.model.fmut.RUnlock()
 
-		hasher := sha256.New()
 		for _, block := range state.blocks {
 			buf = buf[:int(block.Size)]
 			found := p.model.finder.Iterate(block.Hash, func(folder, file string, index uint32) bool {
@@ -637,12 +668,9 @@ nextFile:
 					return false
 				}
 
-				// Only done on second to last puller attempt
-				if checksum {
-					hasher.Write(buf)
-					hash := hasher.Sum(nil)
-					hasher.Reset()
-					if !bytes.Equal(hash, block.Hash) {
+				hash, err := scanner.VerifyBuffer(buf, block)
+				if err != nil {
+					if hash != nil {
 						if debug {
 							l.Debugf("Finder block mismatch in %s:%s:%d expected %q got %q", folder, file, index, block.Hash, hash)
 						}
@@ -650,8 +678,10 @@ nextFile:
 						if err != nil {
 							l.Warnln("finder fix:", err)
 						}
-						return false
+					} else if debug {
+						l.Debugln("Finder failed to verify buffer", err)
 					}
+					return false
 				}
 
 				_, err = dstFd.WriteAt(buf, block.Offset)
@@ -686,20 +716,9 @@ nextFile:
 }
 
 func (p *Puller) pullerRoutine(in <-chan pullBlockState, out chan<- *sharedPullerState) {
-nextBlock:
 	for state := range in {
 		if state.failed() != nil {
-			continue nextBlock
-		}
-
-		// Select the least busy device to pull the block from. If we found no
-		// feasible device at all, fail the block (and in the long run, the
-		// file).
-		potentialDevices := p.model.availability(p.folder, state.file.Name)
-		selected := activity.leastBusy(potentialDevices)
-		if selected == (protocol.DeviceID{}) {
-			state.earlyClose("pull", errNoDevice)
-			continue nextBlock
+			continue
 		}
 
 		// Get an fd to the temporary file. Tehcnically we don't need it until
@@ -707,45 +726,58 @@ nextBlock:
 		// no point in issuing the request to the network.
 		fd, err := state.tempFile()
 		if err != nil {
-			continue nextBlock
+			continue
 		}
 
-		// Fetch the block, while marking the selected device as in use so that
-		// leastBusy can select another device when someone else asks.
-		activity.using(selected)
-		buf, err := p.model.requestGlobal(selected, p.folder, state.file.Name, state.block.Offset, int(state.block.Size), state.block.Hash)
-		activity.done(selected)
-		if err != nil {
-			state.earlyClose("pull", err)
-			continue nextBlock
-		}
+		var lastError error
+		potentialDevices := p.model.availability(p.folder, state.file.Name)
+		for {
+			// Select the least busy device to pull the block from. If we found no
+			// feasible device at all, fail the block (and in the long run, the
+			// file).
+			selected := activity.leastBusy(potentialDevices)
+			if selected == (protocol.DeviceID{}) {
+				if lastError != nil {
+					state.earlyClose("pull", lastError)
+				} else {
+					state.earlyClose("pull", errNoDevice)
+				}
+				break
+			}
 
-		// Save the block data we got from the cluster
-		_, err = fd.WriteAt(buf, state.block.Offset)
-		if err != nil {
-			state.earlyClose("save", err)
-			continue nextBlock
-		}
+			potentialDevices = removeDevice(potentialDevices, selected)
 
-		state.pullDone()
-		out <- state.sharedPullerState
+			// Fetch the block, while marking the selected device as in use so that
+			// leastBusy can select another device when someone else asks.
+			activity.using(selected)
+			buf, lastError := p.model.requestGlobal(selected, p.folder, state.file.Name, state.block.Offset, int(state.block.Size), state.block.Hash)
+			activity.done(selected)
+			if lastError != nil {
+				continue
+			}
+
+			// Verify that the received block matches the desired hash, if not
+			// try pulling it from another device.
+			_, lastError = scanner.VerifyBuffer(buf, state.block)
+			if lastError != nil {
+				continue
+			}
+
+			// Save the block data we got from the cluster
+			_, err = fd.WriteAt(buf, state.block.Offset)
+			if err != nil {
+				state.earlyClose("save", err)
+			} else {
+				state.pullDone()
+				out <- state.sharedPullerState
+			}
+			break
+		}
 	}
 }
 
 func (p *Puller) performFinish(state *sharedPullerState) {
-	// Verify the file against expected hashes
-	fd, err := os.Open(state.tempName)
-	if err != nil {
-		l.Warnln("puller: final:", err)
-		return
-	}
-	err = scanner.Verify(fd, protocol.BlockSize, state.file.Blocks)
-	fd.Close()
-	if err != nil {
-		l.Infoln("puller:", state.file.Name, err, "(file changed during pull?)")
-		return
-	}
-
+	var err error
 	// Set the correct permission bits on the new file
 	if !p.ignorePerms {
 		err = os.Chmod(state.tempName, os.FileMode(state.file.Flags&0777))
@@ -829,6 +861,7 @@ func (p *Puller) finisherRoutine(in <-chan *sharedPullerState) {
 				continue
 			}
 
+			p.queue.Done(state.file.Name)
 			p.performFinish(state)
 			p.model.receivedFile(p.folder, state.file.Name)
 			if p.progressEmitter != nil {
@@ -838,6 +871,15 @@ func (p *Puller) finisherRoutine(in <-chan *sharedPullerState) {
 	}
 }
 
+// Moves the given filename to the front of the job queue
+func (p *Puller) BringToFront(filename string) {
+	p.queue.BringToFront(filename)
+}
+
+func (p *Puller) Jobs() ([]string, []string) {
+	return p.queue.Jobs()
+}
+
 func invalidateFolder(cfg *config.Configuration, folderID string, err error) {
 	for i := range cfg.Folders {
 		folder := &cfg.Folders[i]
@@ -847,3 +889,13 @@ func invalidateFolder(cfg *config.Configuration, folderID string, err error) {
 		}
 	}
 }
+
+func removeDevice(devices []protocol.DeviceID, device protocol.DeviceID) []protocol.DeviceID {
+	for i := range devices {
+		if devices[i] == device {
+			devices[i] = devices[len(devices)-1]
+			return devices[:len(devices)-1]
+		}
+	}
+	return devices
+}

internal/model/puller_test.go

@@ -221,7 +221,7 @@ func TestCopierFinder(t *testing.T) {
 	finisherChan := make(chan *sharedPullerState, 1)
 
 	// Run a single fetcher routine
-	go p.copierRoutine(copyChan, pullChan, finisherChan, false)
+	go p.copierRoutine(copyChan, pullChan, finisherChan)
 
 	p.handleFile(requiredFile, copyChan, finisherChan)
 
@@ -317,9 +317,8 @@ func TestCopierCleanup(t *testing.T) {
 	}
 }
 
-// On the 10th iteration, we start hashing the content which we receive by
-// following blockfinder's instructions. Make sure that the copier routine
-// hashes the content when asked, and pulls if it fails to find the block.
+// Make sure that the copier routine hashes the content when asked, and pulls
+// if it fails to find the block.
 func TestLastResortPulling(t *testing.T) {
 	fcfg := config.FolderConfiguration{ID: "default", Path: "testdata"}
 	cfg := config.Configuration{Folders: []config.FolderConfiguration{fcfg}}
@@ -361,8 +360,8 @@ func TestLastResortPulling(t *testing.T) {
 	pullChan := make(chan pullBlockState, 1)
 	finisherChan := make(chan *sharedPullerState, 1)
 
-	// Run a single copier routine with checksumming enabled
-	go p.copierRoutine(copyChan, pullChan, finisherChan, true)
+	// Run a single copier routine
+	go p.copierRoutine(copyChan, pullChan, finisherChan)
 
 	p.handleFile(file, copyChan, finisherChan)
 

internal/model/queue.go

@@ -0,0 +1,94 @@
+// Copyright (C) 2014 The Syncthing Authors.
+//
+// This program is free software: you can redistribute it and/or modify it
+// under the terms of the GNU General Public License as published by the Free
+// Software Foundation, either version 3 of the License, or (at your option)
+// any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT
+// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along
+// with this program. If not, see <http://www.gnu.org/licenses/>.
+
+package model
+
+import "sync"
+
+type jobQueue struct {
+	progress []string
+	queued   []string
+	mut      sync.Mutex
+}
+
+func newJobQueue() *jobQueue {
+	return &jobQueue{}
+}
+
+func (q *jobQueue) Push(file string) {
+	q.mut.Lock()
+	q.queued = append(q.queued, file)
+	q.mut.Unlock()
+}
+
+func (q *jobQueue) Pop() (string, bool) {
+	q.mut.Lock()
+	defer q.mut.Unlock()
+
+	if len(q.queued) == 0 {
+		return "", false
+	}
+
+	var f string
+	f = q.queued[0]
+	q.queued = q.queued[1:]
+	q.progress = append(q.progress, f)
+
+	return f, true
+}
+
+func (q *jobQueue) BringToFront(filename string) {
+	q.mut.Lock()
+	defer q.mut.Unlock()
+
+	for i, cur := range q.queued {
+		if cur == filename {
+			if i > 0 {
+				// Shift the elements before the selected element one step to
+				// the right, overwriting the selected element
+				copy(q.queued[1:i+1], q.queued[0:])
+				// Put the selected element at the front
+				q.queued[0] = cur
+			}
+			return
+		}
+	}
+}
+
+func (q *jobQueue) Done(file string) {
+	q.mut.Lock()
+	defer q.mut.Unlock()
+
+	for i := range q.progress {
+		if q.progress[i] == file {
+			copy(q.progress[i:], q.progress[i+1:])
+			q.progress = q.progress[:len(q.progress)-1]
+			return
+		}
+	}
+}
+
+func (q *jobQueue) Jobs() ([]string, []string) {
+	q.mut.Lock()
+	defer q.mut.Unlock()
+
+	progress := make([]string, len(q.progress))
+	copy(progress, q.progress)
+
+	queued := make([]string, len(q.queued))
+	copy(queued, q.queued)
+
+	return progress, queued
+}

internal/model/queue_test.go

@@ -0,0 +1,200 @@
+// Copyright (C) 2014 The Syncthing Authors.
+//
+// This program is free software: you can redistribute it and/or modify it
+// under the terms of the GNU General Public License as published by the Free
+// Software Foundation, either version 3 of the License, or (at your option)
+// any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT
+// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along
+// with this program. If not, see <http://www.gnu.org/licenses/>.
+
+package model
+
+import (
+	"fmt"
+	"reflect"
+	"testing"
+)
+
+func TestJobQueue(t *testing.T) {
+	// Some random actions
+	q := newJobQueue()
+	q.Push("f1")
+	q.Push("f2")
+	q.Push("f3")
+	q.Push("f4")
+
+	progress, queued := q.Jobs()
+	if len(progress) != 0 || len(queued) != 4 {
+		t.Fatal("Wrong length")
+	}
+
+	for i := 1; i < 5; i++ {
+		n, ok := q.Pop()
+		if !ok || n != fmt.Sprintf("f%d", i) {
+			t.Fatal("Wrong element")
+		}
+		progress, queued = q.Jobs()
+		if len(progress) != 1 || len(queued) != 3 {
+			t.Log(progress)
+			t.Log(queued)
+			t.Fatal("Wrong length")
+		}
+
+		q.Done(n)
+		progress, queued = q.Jobs()
+		if len(progress) != 0 || len(queued) != 3 {
+			t.Fatal("Wrong length", len(progress), len(queued))
+		}
+
+		q.Push(n)
+		progress, queued = q.Jobs()
+		if len(progress) != 0 || len(queued) != 4 {
+			t.Fatal("Wrong length")
+		}
+
+		q.Done("f5") // Does not exist
+		progress, queued = q.Jobs()
+		if len(progress) != 0 || len(queued) != 4 {
+			t.Fatal("Wrong length")
+		}
+	}
+
+	if len(q.progress) > 0 || len(q.queued) != 4 {
+		t.Fatal("Wrong length")
+	}
+
+	for i := 4; i > 0; i-- {
+		progress, queued = q.Jobs()
+		if len(progress) != 4-i || len(queued) != i {
+			t.Fatal("Wrong length")
+		}
+
+		s := fmt.Sprintf("f%d", i)
+
+		q.BringToFront(s)
+		progress, queued = q.Jobs()
+		if len(progress) != 4-i || len(queued) != i {
+			t.Fatal("Wrong length")
+		}
+
+		n, ok := q.Pop()
+		if !ok || n != s {
+			t.Fatal("Wrong element")
+		}
+		progress, queued = q.Jobs()
+		if len(progress) != 5-i || len(queued) != i-1 {
+			t.Fatal("Wrong length")
+		}
+
+		q.Done("f5") // Does not exist
+		progress, queued = q.Jobs()
+		if len(progress) != 5-i || len(queued) != i-1 {
+			t.Fatal("Wrong length")
+		}
+	}
+
+	_, ok := q.Pop()
+	if len(q.progress) != 4 || ok {
+		t.Fatal("Wrong length")
+	}
+
+	q.Done("f1")
+	q.Done("f2")
+	q.Done("f3")
+	q.Done("f4")
+	q.Done("f5") // Does not exist
+
+	_, ok = q.Pop()
+	if len(q.progress) != 0 || ok {
+		t.Fatal("Wrong length")
+	}
+
+	progress, queued = q.Jobs()
+	if len(progress) != 0 || len(queued) != 0 {
+		t.Fatal("Wrong length")
+	}
+	q.BringToFront("")
+	q.Done("f5") // Does not exist
+	progress, queued = q.Jobs()
+	if len(progress) != 0 || len(queued) != 0 {
+		t.Fatal("Wrong length")
+	}
+}
+
+func TestBringToFront(t *testing.T) {
+	q := newJobQueue()
+	q.Push("f1")
+	q.Push("f2")
+	q.Push("f3")
+	q.Push("f4")
+
+	_, queued := q.Jobs()
+	if !reflect.DeepEqual(queued, []string{"f1", "f2", "f3", "f4"}) {
+		t.Errorf("Incorrect order %v at start", queued)
+	}
+
+	q.BringToFront("f1") // corner case: does nothing
+
+	_, queued = q.Jobs()
+	if !reflect.DeepEqual(queued, []string{"f1", "f2", "f3", "f4"}) {
+		t.Errorf("Incorrect order %v", queued)
+	}
+
+	q.BringToFront("f3")
+
+	_, queued = q.Jobs()
+	if !reflect.DeepEqual(queued, []string{"f3", "f1", "f2", "f4"}) {
+		t.Errorf("Incorrect order %v", queued)
+	}
+
+	q.BringToFront("f2")
+
+	_, queued = q.Jobs()
+	if !reflect.DeepEqual(queued, []string{"f2", "f3", "f1", "f4"}) {
+		t.Errorf("Incorrect order %v", queued)
+	}
+
+	q.BringToFront("f4") // corner case: last element
+
+	_, queued = q.Jobs()
+	if !reflect.DeepEqual(queued, []string{"f4", "f2", "f3", "f1"}) {
+		t.Errorf("Incorrect order %v", queued)
+	}
+}
+
+func BenchmarkJobQueueBump(b *testing.B) {
+	files := genFiles(b.N)
+
+	q := newJobQueue()
+	for _, f := range files {
+		q.Push(f.Name)
+	}
+
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		q.BringToFront(files[i].Name)
+	}
+}
+
+func BenchmarkJobQueuePushPopDone10k(b *testing.B) {
+	files := genFiles(10000)
+
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		q := newJobQueue()
+		for _, f := range files {
+			q.Push(f.Name)
+		}
+		for _ = range files {
+			n, _ := q.Pop()
+			q.Done(n)
+		}
+	}
+
+}

internal/model/scanner.go

@@ -17,6 +17,7 @@ package model
 
 import (
 	"fmt"
+	"math/rand"
 	"time"
 )
 
@@ -63,7 +64,9 @@ func (s *Scanner) Serve() {
 				return
 			}
 
-			timer.Reset(s.intv)
+			// Sleep a random time between 3/4 and 5/4 of the configured interval.
+			sleepNanos := (s.intv.Nanoseconds()*3 + rand.Int63n(2*s.intv.Nanoseconds())) / 4
+			timer.Reset(time.Duration(sleepNanos) * time.Nanosecond)
 		}
 	}
 }
@@ -75,3 +78,9 @@ func (s *Scanner) Stop() {
 func (s *Scanner) String() string {
 	return fmt.Sprintf("scanner/%s@%p", s.folder, s)
 }
+
+func (s *Scanner) BringToFront(string) {}
+
+func (s *Scanner) Jobs() ([]string, []string) {
+	return nil, nil
+}

internal/model/sharedpullerstate.go

@@ -110,6 +110,17 @@ func (s *sharedPullerState) tempFile() (io.WriterAt, error) {
 	flags := os.O_WRONLY
 	if s.reused == 0 {
 		flags |= os.O_CREATE | os.O_EXCL
+	} else {
+		// With sufficiently bad luck when exiting or crashing, we may have
+		// had time to chmod the temp file to read only state but not yet
+		// moved it to it's final name. This leaves us with a read only temp
+		// file that we're going to try to reuse. To handle that, we need to
+		// make sure we have write permissions on the file before opening it.
+		err := os.Chmod(s.tempName, 0644)
+		if err != nil {
+			s.earlyCloseLocked("dst create chmod", err)
+			return nil, err
+		}
 	}
 	fd, err := os.OpenFile(s.tempName, flags, 0644)
 	if err != nil {

internal/osutil/osutil.go

@@ -43,8 +43,8 @@ func Rename(from, to string) error {
 
 	// Make sure the destination directory is writeable
 	toDir := filepath.Dir(to)
-	if info, err := os.Stat(toDir); err == nil {
-		os.Chmod(toDir, 0777)
+	if info, err := os.Stat(toDir); err == nil && info.IsDir() && info.Mode()&0200 == 0 {
+		os.Chmod(toDir, 0755)
 		defer os.Chmod(toDir, info.Mode())
 	}
 

internal/protocol/message.go

@@ -69,6 +69,17 @@ func (f FileInfo) HasPermissionBits() bool {
 	return f.Flags&FlagNoPermBits == 0
 }
 
+func (f FileInfo) ToTruncated() FileInfoTruncated {
+	return FileInfoTruncated{
+		Name:         f.Name,
+		Flags:        f.Flags,
+		Modified:     f.Modified,
+		Version:      f.Version,
+		LocalVersion: f.LocalVersion,
+		NumBlocks:    uint32(len(f.Blocks)),
+	}
+}
+
 // Used for unmarshalling a FileInfo structure but skipping the actual block list
 type FileInfoTruncated struct {
 	Name         string // max:8192

internal/scanner/blocks.go

@@ -130,6 +130,24 @@ func Verify(r io.Reader, blocksize int, blocks []protocol.BlockInfo) error {
 	return nil
 }
 
+func VerifyBuffer(buf []byte, block protocol.BlockInfo) ([]byte, error) {
+	if len(buf) != int(block.Size) {
+		return nil, fmt.Errorf("length mismatch %d != %d", len(buf), block.Size)
+	}
+	hf := sha256.New()
+	_, err := hf.Write(buf)
+	if err != nil {
+		return nil, err
+	}
+	hash := hf.Sum(nil)
+
+	if !bytes.Equal(hash, block.Hash) {
+		return hash, fmt.Errorf("hash mismatch %x != %x", hash, block.Hash)
+	}
+
+	return hash, nil
+}
+
 // BlockEqual returns whether two slices of blocks are exactly the same hash
 // and index pair wise.
 func BlocksEqual(src, tgt []protocol.BlockInfo) bool {

internal/scanner/walk.go

@@ -60,7 +60,7 @@ type TempNamer interface {
 
 type CurrentFiler interface {
 	// CurrentFile returns the file as seen at last scan.
-	CurrentFile(name string) protocol.FileInfo
+	CurrentFile(name string) (protocol.FileInfo, bool)
 }
 
 // Walk returns the list of files found in the local folder by scanning the
@@ -143,26 +143,27 @@ func (w *Walker) walkAndHashFiles(fchan chan protocol.FileInfo) filepath.WalkFun
 
 		// Index wise symlinks are always files, regardless of what the target
 		// is, because symlinks carry their target path as their content.
-		if info.Mode()&os.ModeSymlink != 0 {
+		if info.Mode()&os.ModeSymlink == os.ModeSymlink {
 			var rval error
-			// If the target is a directory, do NOT descend down there.
-			// This will cause files to get tracked, and removing the symlink
-			// will as a result remove files in their real location.
-			// But do not SkipDir if the target is not a directory, as it will
-			// stop scanning the current directory.
+			// If the target is a directory, do NOT descend down there. This
+			// will cause files to get tracked, and removing the symlink will
+			// as a result remove files in their real location. But do not
+			// SkipDir if the target is not a directory, as it will stop
+			// scanning the current directory.
 			if info.IsDir() {
 				rval = filepath.SkipDir
 			}
 
-			// We always rehash symlinks as they have no modtime or
-			// permissions.
-			// We check if they point to the old target by checking that
-			// their existing blocks match with the blocks in the index.
-			// If we don't have a filer or don't support symlinks, skip.
-			if w.CurrentFiler == nil || !symlinks.Supported {
+			// If we don't support symlinks, skip.
+			if !symlinks.Supported {
 				return rval
 			}
 
+			// We always rehash symlinks as they have no modtime or
+			// permissions. We check if they point to the old target by
+			// checking that their existing blocks match with the blocks in
+			// the index.
+
 			target, flags, err := symlinks.Read(p)
 			flags = flags & protocol.SymlinkTypeMask
 			if err != nil {
@@ -180,9 +181,18 @@ func (w *Walker) walkAndHashFiles(fchan chan protocol.FileInfo) filepath.WalkFun
 				return rval
 			}
 
-			cf := w.CurrentFiler.CurrentFile(rn)
-			if !cf.IsDeleted() && cf.IsSymlink() && SymlinkTypeEqual(flags, cf.Flags) && BlocksEqual(cf.Blocks, blocks) {
-				return rval
+			if w.CurrentFiler != nil {
+				// A symlink is "unchanged", if
+				//  - it exists
+				//  - it wasn't deleted (because it isn't now)
+				//  - it was a symlink
+				//  - it wasn't invalid
+				//  - the symlink type (file/dir) was the same
+				//  - the block list (i.e. hash of target) was the same
+				cf, ok := w.CurrentFiler.CurrentFile(rn)
+				if ok && !cf.IsDeleted() && cf.IsSymlink() && !cf.IsInvalid() && SymlinkTypeEqual(flags, cf.Flags) && BlocksEqual(cf.Blocks, blocks) {
+					return rval
+				}
 			}
 
 			f := protocol.FileInfo{
@@ -204,9 +214,16 @@ func (w *Walker) walkAndHashFiles(fchan chan protocol.FileInfo) filepath.WalkFun
 
 		if info.Mode().IsDir() {
 			if w.CurrentFiler != nil {
-				cf := w.CurrentFiler.CurrentFile(rn)
+				// A directory is "unchanged", if it
+				//  - exists
+				//  - has the same permissions as previously, unless we are ignoring permissions
+				//  - was not marked deleted (since it apparently exists now)
+				//  - was a directory previously (not a file or something else)
+				//  - was not a symlink (since it's a directory now)
+				//  - was not invalid (since it looks valid now)
+				cf, ok := w.CurrentFiler.CurrentFile(rn)
 				permUnchanged := w.IgnorePerms || !cf.HasPermissionBits() || PermsEqual(cf.Flags, uint32(info.Mode()))
-				if !cf.IsDeleted() && cf.IsDirectory() && permUnchanged && !cf.IsSymlink() {
+				if ok && permUnchanged && !cf.IsDeleted() && cf.IsDirectory() && !cf.IsSymlink() && !cf.IsInvalid() {
 					return nil
 				}
 			}
@@ -232,9 +249,19 @@ func (w *Walker) walkAndHashFiles(fchan chan protocol.FileInfo) filepath.WalkFun
 
 		if info.Mode().IsRegular() {
 			if w.CurrentFiler != nil {
-				cf := w.CurrentFiler.CurrentFile(rn)
+				// A file is "unchanged", if it
+				//  - exists
+				//  - has the same permissions as previously, unless we are ignoring permissions
+				//  - was not marked deleted (since it apparently exists now)
+				//  - had the same modification time as it has now
+				//  - was not a directory previously (since it's a file now)
+				//  - was not a symlink (since it's a file now)
+				//  - was not invalid (since it looks valid now)
+				//  - has the same size as previously
+				cf, ok := w.CurrentFiler.CurrentFile(rn)
 				permUnchanged := w.IgnorePerms || !cf.HasPermissionBits() || PermsEqual(cf.Flags, uint32(info.Mode()))
-				if !cf.IsDeleted() && cf.Modified == info.ModTime().Unix() && permUnchanged {
+				if ok && permUnchanged && !cf.IsDeleted() && cf.Modified == info.ModTime().Unix() && !cf.IsDirectory() &&
+					!cf.IsSymlink() && !cf.IsInvalid() && cf.Size() == info.Size() {
 					return nil
 				}
 

internal/scanner/walk_test.go

@@ -58,7 +58,8 @@ func init() {
 }
 
 func TestWalkSub(t *testing.T) {
-	ignores, err := ignore.Load("testdata/.stignore", false)
+	ignores := ignore.New(false)
+	err := ignores.Load("testdata/.stignore")
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -93,7 +94,8 @@ func TestWalkSub(t *testing.T) {
 }
 
 func TestWalk(t *testing.T) {
-	ignores, err := ignore.Load("testdata/.stignore", false)
+	ignores := ignore.New(false)
+	err := ignores.Load("testdata/.stignore")
 	if err != nil {
 		t.Fatal(err)
 	}

internal/upgrade/upgrade_common.go

@@ -67,8 +67,38 @@ func To(rel Release) error {
 	}
 }
 
-// Returns 1 if a>b, -1 if a<b and 0 if they are equal
-func CompareVersions(a, b string) int {
+// A wrapper around actual implementations
+func ToURL(url string) error {
+	select {
+	case <-upgradeUnlocked:
+		path, err := osext.Executable()
+		if err != nil {
+			upgradeUnlocked <- true
+			return err
+		}
+		err = upgradeToURL(path, url)
+		// If we've failed to upgrade, unlock so that another attempt could be made
+		if err != nil {
+			upgradeUnlocked <- true
+		}
+		return err
+	default:
+		return ErrUpgradeInProgress
+	}
+}
+
+type Relation int
+
+const (
+	MajorOlder Relation = -2 // Older by a major version (x in x.y.z or 0.x.y).
+	Older               = -1 // Older by a minor version (y or z in x.y.z, or y in 0.x.y)
+	Equal               = 0  // Versions are semantically equal
+	Newer               = 1  // Newer by a minor version (y or z in x.y.z, or y in 0.x.y)
+	MajorNewer          = 2  // Newer by a major version (x in x.y.z or 0.x.y).
+)
+
+// Returns a relation describing how a compares to b.
+func CompareVersions(a, b string) Relation {
 	arel, apre := versionParts(a)
 	brel, bpre := versionParts(b)
 
@@ -80,27 +110,39 @@ func CompareVersions(a, b string) int {
 	// First compare major-minor-patch versions
 	for i := 0; i < minlen; i++ {
 		if arel[i] < brel[i] {
-			return -1
+			if i == 0 {
+				return MajorOlder
+			}
+			if i == 1 && arel[0] == 0 {
+				return MajorOlder
+			}
+			return Older
 		}
 		if arel[i] > brel[i] {
-			return 1
+			if i == 0 {
+				return MajorNewer
+			}
+			if i == 1 && arel[0] == 0 {
+				return MajorNewer
+			}
+			return Newer
 		}
 	}
 
 	// Longer version is newer, when the preceding parts are equal
 	if len(arel) < len(brel) {
-		return -1
+		return Older
 	}
 	if len(arel) > len(brel) {
-		return 1
+		return Newer
 	}
 
 	// Prerelease versions are older, if the versions are the same
 	if len(apre) == 0 && len(bpre) > 0 {
-		return 1
+		return Newer
 	}
 	if len(apre) > 0 && len(bpre) == 0 {
-		return -1
+		return Older
 	}
 
 	minlen = len(apre)
@@ -115,24 +157,24 @@ func CompareVersions(a, b string) int {
 			switch bv := bpre[i].(type) {
 			case int:
 				if av < bv {
-					return -1
+					return Older
 				}
 				if av > bv {
-					return 1
+					return Newer
 				}
 			case string:
-				return -1
+				return Older
 			}
 		case string:
 			switch bv := bpre[i].(type) {
 			case int:
-				return 1
+				return Newer
 			case string:
 				if av < bv {
-					return -1
+					return Older
 				}
 				if av > bv {
-					return 1
+					return Newer
 				}
 			}
 		}
@@ -140,14 +182,14 @@ func CompareVersions(a, b string) int {
 
 	// If all else is equal, longer prerelease string is newer
 	if len(apre) < len(bpre) {
-		return -1
+		return Older
 	}
 	if len(apre) > len(bpre) {
-		return 1
+		return Newer
 	}
 
 	// Looks like they're actually the same
-	return 0
+	return Equal
 }
 
 // Split a version into parts.

internal/upgrade/upgrade_supported.go

@@ -13,13 +13,16 @@
 // You should have received a copy of the GNU General Public License along
 // with this program. If not, see <http://www.gnu.org/licenses/>.
 
-// +build !windows,!noupgrade
+// +build !noupgrade
 
 package upgrade
 
 import (
 	"archive/tar"
+	"archive/zip"
+	"bytes"
 	"compress/gzip"
+	"crypto/md5"
 	"encoding/json"
 	"fmt"
 	"io"
@@ -28,43 +31,10 @@ import (
 	"os"
 	"path"
 	"path/filepath"
+	"runtime"
 	"strings"
 )
 
-// Upgrade to the given release, saving the previous binary with a ".old" extension.
-func upgradeTo(path string, rel Release) error {
-	expectedRelease := releaseName(rel.Tag)
-	if debug {
-		l.Debugf("expected release asset %q", expectedRelease)
-	}
-	for _, asset := range rel.Assets {
-		if debug {
-			l.Debugln("considering release", asset)
-		}
-		if strings.HasPrefix(asset.Name, expectedRelease) {
-			if strings.HasSuffix(asset.Name, ".tar.gz") {
-				fname, err := readTarGZ(asset.URL, filepath.Dir(path))
-				if err != nil {
-					return err
-				}
-
-				old := path + ".old"
-				err = os.Rename(path, old)
-				if err != nil {
-					return err
-				}
-				err = os.Rename(fname, path)
-				if err != nil {
-					return err
-				}
-				return nil
-			}
-		}
-	}
-
-	return ErrVersionUnknown
-}
-
 // Returns the latest release, including prereleases or not depending on the argument
 func LatestRelease(prerelease bool) (Release, error) {
 	resp, err := http.Get("https://api.github.com/repos/syncthing/syncthing/releases?per_page=10")
@@ -97,7 +67,47 @@ func LatestRelease(prerelease bool) (Release, error) {
 	return Release{}, ErrVersionUnknown
 }
 
-func readTarGZ(url string, dir string) (string, error) {
+// Upgrade to the given release, saving the previous binary with a ".old" extension.
+func upgradeTo(binary string, rel Release) error {
+	expectedRelease := releaseName(rel.Tag)
+	if debug {
+		l.Debugf("expected release asset %q", expectedRelease)
+	}
+	for _, asset := range rel.Assets {
+		assetName := path.Base(asset.Name)
+		if debug {
+			l.Debugln("considering release", assetName)
+		}
+
+		if strings.HasPrefix(assetName, expectedRelease) {
+			return upgradeToURL(binary, asset.URL)
+		}
+	}
+
+	return ErrVersionUnknown
+}
+
+// Upgrade to the given release, saving the previous binary with a ".old" extension.
+func upgradeToURL(binary string, url string) error {
+	fname, err := readRelease(filepath.Dir(binary), url)
+	if err != nil {
+		return err
+	}
+
+	old := binary + ".old"
+	_ = os.Remove(old)
+	err = os.Rename(binary, old)
+	if err != nil {
+		return err
+	}
+	err = os.Rename(fname, binary)
+	if err != nil {
+		return err
+	}
+	return nil
+}
+
+func readRelease(dir, url string) (string, error) {
 	if debug {
 		l.Debugf("loading %q", url)
 	}
@@ -114,17 +124,26 @@ func readTarGZ(url string, dir string) (string, error) {
 	}
 	defer resp.Body.Close()
 
-	gr, err := gzip.NewReader(resp.Body)
+	switch runtime.GOOS {
+	case "windows":
+		return readZip(dir, resp.Body)
+	default:
+		return readTarGz(dir, resp.Body)
+	}
+}
+
+func readTarGz(dir string, r io.Reader) (string, error) {
+	gr, err := gzip.NewReader(r)
 	if err != nil {
 		return "", err
 	}
 
 	tr := tar.NewReader(gr)
-	if err != nil {
-		return "", err
-	}
+
+	var tempName, actualMD5, expectedMD5 string
 
 	// Iterate through the files in the archive.
+fileLoop:
 	for {
 		hdr, err := tr.Next()
 		if err == io.EOF {
@@ -134,26 +153,177 @@ func readTarGZ(url string, dir string) (string, error) {
 		if err != nil {
 			return "", err
 		}
+
+		shortName := path.Base(hdr.Name)
+
 		if debug {
-			l.Debugf("considering file %q", hdr.Name)
+			l.Debugf("considering file %q", shortName)
 		}
 
-		if path.Base(hdr.Name) == "syncthing" {
-			of, err := ioutil.TempFile(dir, "syncthing")
+		switch shortName {
+		case "syncthing":
+			if debug {
+				l.Debugln("writing and hashing binary")
+			}
+			tempName, actualMD5, err = writeBinary(dir, tr)
 			if err != nil {
 				return "", err
 			}
-			io.Copy(of, tr)
-			err = of.Close()
+
+			if expectedMD5 != "" {
+				// We're done
+				break fileLoop
+			}
+
+		case "syncthing.md5":
+			bs, err := ioutil.ReadAll(tr)
 			if err != nil {
-				os.Remove(of.Name())
 				return "", err
 			}
 
-			os.Chmod(of.Name(), os.FileMode(hdr.Mode))
-			return of.Name(), nil
+			expectedMD5 = strings.TrimSpace(string(bs))
+			if debug {
+				l.Debugln("expected md5 is", actualMD5)
+			}
+
+			if actualMD5 != "" {
+				// We're done
+				break fileLoop
+			}
 		}
 	}
 
+	if tempName != "" && actualMD5 != "" {
+		// We found and saved something to disk.
+		if expectedMD5 == "" {
+			if debug {
+				l.Debugln("there is no md5 to compare with")
+			}
+		} else if actualMD5 != expectedMD5 {
+			// There was an md5 file included in the archive, and it doesn't
+			// match what we just wrote to disk.
+			return "", fmt.Errorf("incorrect MD5 checksum")
+		}
+		return tempName, nil
+	}
+
+	return "", fmt.Errorf("no upgrade found")
+}
+
+func readZip(dir string, r io.Reader) (string, error) {
+	body, err := ioutil.ReadAll(r)
+	if err != nil {
+		return "", err
+	}
+
+	archive, err := zip.NewReader(bytes.NewReader(body), int64(len(body)))
+	if err != nil {
+		return "", err
+	}
+
+	var tempName, actualMD5, expectedMD5 string
+
+	// Iterate through the files in the archive.
+fileLoop:
+	for _, file := range archive.File {
+		shortName := path.Base(file.Name)
+
+		if debug {
+			l.Debugf("considering file %q", shortName)
+		}
+
+		switch shortName {
+		case "syncthing.exe":
+			if debug {
+				l.Debugln("writing and hashing binary")
+			}
+
+			inFile, err := file.Open()
+			if err != nil {
+				return "", err
+			}
+			tempName, actualMD5, err = writeBinary(dir, inFile)
+			if err != nil {
+				return "", err
+			}
+
+			if expectedMD5 != "" {
+				// We're done
+				break fileLoop
+			}
+
+		case "syncthing.exe.md5":
+			inFile, err := file.Open()
+			if err != nil {
+				return "", err
+			}
+			bs, err := ioutil.ReadAll(inFile)
+			if err != nil {
+				return "", err
+			}
+
+			expectedMD5 = strings.TrimSpace(string(bs))
+			if debug {
+				l.Debugln("expected md5 is", actualMD5)
+			}
+
+			if actualMD5 != "" {
+				// We're done
+				break fileLoop
+			}
+		}
+	}
+
+	if tempName != "" && actualMD5 != "" {
+		// We found and saved something to disk.
+		if expectedMD5 == "" {
+			if debug {
+				l.Debugln("there is no md5 to compare with")
+			}
+		} else if actualMD5 != expectedMD5 {
+			// There was an md5 file included in the archive, and it doesn't
+			// match what we just wrote to disk.
+			return "", fmt.Errorf("incorrect MD5 checksum")
+		}
+		return tempName, nil
+	}
+
 	return "", fmt.Errorf("No upgrade found")
 }
+
+func writeBinary(dir string, inFile io.Reader) (filename, md5sum string, err error) {
+	outFile, err := ioutil.TempFile(dir, "syncthing")
+	if err != nil {
+		return "", "", err
+	}
+
+	// Write the binary both a temporary file and to the MD5 hasher.
+
+	h := md5.New()
+	mw := io.MultiWriter(h, outFile)
+
+	_, err = io.Copy(mw, inFile)
+	if err != nil {
+		os.Remove(outFile.Name())
+		return "", "", err
+	}
+
+	err = outFile.Close()
+	if err != nil {
+		os.Remove(outFile.Name())
+		return "", "", err
+	}
+
+	err = os.Chmod(outFile.Name(), os.FileMode(0755))
+	if err != nil {
+		os.Remove(outFile.Name())
+		return "", "", err
+	}
+
+	actualMD5 := fmt.Sprintf("%x", h.Sum(nil))
+	if debug {
+		l.Debugln("actual md5 is", actualMD5)
+	}
+
+	return outFile.Name(), actualMD5, nil
+}

internal/upgrade/upgrade_test.go

@@ -19,33 +19,37 @@ import "testing"
 
 var testcases = []struct {
 	a, b string
-	r    int
+	r    Relation
 }{
-	{"0.1.2", "0.1.2", 0},
-	{"0.1.3", "0.1.2", 1},
-	{"0.1.1", "0.1.2", -1},
-	{"0.3.0", "0.1.2", 1},
-	{"0.0.9", "0.1.2", -1},
-	{"1.1.2", "0.1.2", 1},
-	{"0.1.2", "1.1.2", -1},
-	{"0.1.10", "0.1.9", 1},
-	{"0.10.0", "0.2.0", 1},
-	{"30.10.0", "4.9.0", 1},
-	{"0.9.0-beta7", "0.9.0-beta6", 1},
-	{"1.0.0-alpha", "1.0.0-alpha.1", -1},
-	{"1.0.0-alpha.1", "1.0.0-alpha.beta", -1},
-	{"1.0.0-alpha.beta", "1.0.0-beta", -1},
-	{"1.0.0-beta", "1.0.0-beta.2", -1},
-	{"1.0.0-beta.2", "1.0.0-beta.11", -1},
-	{"1.0.0-beta.11", "1.0.0-rc.1", -1},
-	{"1.0.0-rc.1", "1.0.0", -1},
-	{"1.0.0+45", "1.0.0+23-dev-foo", 0},
-	{"1.0.0-beta.23+45", "1.0.0-beta.23+23-dev-foo", 0},
-	{"1.0.0-beta.3+99", "1.0.0-beta.24+0", -1},
+	{"0.1.2", "0.1.2", Equal},
+	{"0.1.3", "0.1.2", Newer},
+	{"0.1.1", "0.1.2", Older},
+	{"0.3.0", "0.1.2", MajorNewer},
+	{"0.0.9", "0.1.2", MajorOlder},
+	{"1.3.0", "1.1.2", Newer},
+	{"1.0.9", "1.1.2", Older},
+	{"2.3.0", "1.1.2", MajorNewer},
+	{"1.0.9", "2.1.2", MajorOlder},
+	{"1.1.2", "0.1.2", MajorNewer},
+	{"0.1.2", "1.1.2", MajorOlder},
+	{"0.1.10", "0.1.9", Newer},
+	{"0.10.0", "0.2.0", MajorNewer},
+	{"30.10.0", "4.9.0", MajorNewer},
+	{"0.9.0-beta7", "0.9.0-beta6", Newer},
+	{"1.0.0-alpha", "1.0.0-alpha.1", Older},
+	{"1.0.0-alpha.1", "1.0.0-alpha.beta", Older},
+	{"1.0.0-alpha.beta", "1.0.0-beta", Older},
+	{"1.0.0-beta", "1.0.0-beta.2", Older},
+	{"1.0.0-beta.2", "1.0.0-beta.11", Older},
+	{"1.0.0-beta.11", "1.0.0-rc.1", Older},
+	{"1.0.0-rc.1", "1.0.0", Older},
+	{"1.0.0+45", "1.0.0+23-dev-foo", Equal},
+	{"1.0.0-beta.23+45", "1.0.0-beta.23+23-dev-foo", Equal},
+	{"1.0.0-beta.3+99", "1.0.0-beta.24+0", Older},
 
-	{"v1.1.2", "1.1.2", 0},
-	{"v1.1.2", "V1.1.2", 0},
-	{"1.1.2", "V1.1.2", 0},
+	{"v1.1.2", "1.1.2", Equal},
+	{"v1.1.2", "V1.1.2", Equal},
+	{"1.1.2", "V1.1.2", Equal},
 }
 
 func TestCompareVersions(t *testing.T) {

internal/upgrade/upgrade_unsupp.go

@@ -17,7 +17,11 @@
 
 package upgrade
 
-func upgradeTo(path string, rel Release) error {
+func upgradeTo(binary string, rel Release) error {
+	return ErrUpgradeUnsupported
+}
+
+func upgradeToURL(binary, url string) error {
 	return ErrUpgradeUnsupported
 }
 

internal/upgrade/upgrade_windows.go

@@ -1,169 +0,0 @@
-// Copyright (C) 2014 The Syncthing Authors.
-//
-// This program is free software: you can redistribute it and/or modify it
-// under the terms of the GNU General Public License as published by the Free
-// Software Foundation, either version 3 of the License, or (at your option)
-// any later version.
-//
-// This program is distributed in the hope that it will be useful, but WITHOUT
-// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
-// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
-// more details.
-//
-// You should have received a copy of the GNU General Public License along
-// with this program. If not, see <http://www.gnu.org/licenses/>.
-
-// +build windows,!noupgrade
-
-package upgrade
-
-import (
-	"archive/zip"
-	"bytes"
-	"encoding/json"
-	"fmt"
-	"io"
-	"io/ioutil"
-	"net/http"
-	"os"
-	"path"
-	"path/filepath"
-	"strings"
-)
-
-// Upgrade to the given release, saving the previous binary with a ".old" extension.
-func upgradeTo(path string, rel Release) error {
-	expectedRelease := releaseName(rel.Tag)
-	if debug {
-		l.Debugf("expected release asset %q", expectedRelease)
-	}
-	for _, asset := range rel.Assets {
-		if debug {
-			l.Debugln("considering release", asset)
-		}
-		if strings.HasPrefix(asset.Name, expectedRelease) {
-			if strings.HasSuffix(asset.Name, ".zip") {
-				fname, err := readZip(asset.URL, filepath.Dir(path))
-				if err != nil {
-					return err
-				}
-
-				old := path + ".old"
-
-				os.Remove(old)
-				err = os.Rename(path, old)
-				if err != nil {
-					return err
-				}
-				err = os.Rename(fname, path)
-				if err != nil {
-					return err
-				}
-				return nil
-			}
-		}
-	}
-
-	return ErrVersionUnknown
-}
-
-// Returns the latest release, including prereleases or not depending on the argument
-func LatestRelease(prerelease bool) (Release, error) {
-	resp, err := http.Get("https://api.github.com/repos/syncthing/syncthing/releases?per_page=10")
-	if err != nil {
-		return Release{}, err
-	}
-	if resp.StatusCode > 299 {
-		return Release{}, fmt.Errorf("API call returned HTTP error: %s", resp.Status)
-	}
-
-	var rels []Release
-	json.NewDecoder(resp.Body).Decode(&rels)
-	resp.Body.Close()
-
-	if len(rels) == 0 {
-		return Release{}, ErrVersionUnknown
-	}
-
-	if prerelease {
-		// We are a beta version. Use the latest.
-		return rels[0], nil
-	} else {
-		// We are a regular release. Only consider non-prerelease versions for upgrade.
-		for _, rel := range rels {
-			if !rel.Prerelease {
-				return rel, nil
-			}
-		}
-		return Release{}, ErrVersionUnknown
-	}
-}
-
-func readZip(url, dir string) (string, error) {
-	if debug {
-		l.Debugf("loading %q", url)
-	}
-
-	req, err := http.NewRequest("GET", url, nil)
-	if err != nil {
-		return "", err
-	}
-
-	req.Header.Add("Accept", "application/octet-stream")
-	resp, err := http.DefaultClient.Do(req)
-	if err != nil {
-		return "", err
-	}
-	defer resp.Body.Close()
-
-	body, err := ioutil.ReadAll(resp.Body)
-	if err != nil {
-		return "", err
-	}
-
-	archive, err := zip.NewReader(bytes.NewReader(body), resp.ContentLength)
-	if err != nil {
-		return "", err
-	}
-
-	// Iterate through the files in the archive.
-	for _, file := range archive.File {
-
-		if debug {
-			l.Debugf("considering file %q", file.Name)
-		}
-
-		if path.Base(file.Name) == "syncthing.exe" {
-			infile, err := file.Open()
-			if err != nil {
-				return "", err
-			}
-
-			outfile, err := ioutil.TempFile(dir, "syncthing")
-			if err != nil {
-				return "", err
-			}
-
-			_, err = io.Copy(outfile, infile)
-			if err != nil {
-				return "", err
-			}
-
-			err = infile.Close()
-			if err != nil {
-				return "", err
-			}
-
-			err = outfile.Close()
-			if err != nil {
-				os.Remove(outfile.Name())
-				return "", err
-			}
-
-			os.Chmod(outfile.Name(), file.Mode())
-			return outfile.Name(), nil
-		}
-	}
-
-	return "", fmt.Errorf("No upgrade found")
-}

internal/upnp/upnp.go

@@ -158,7 +158,7 @@ Mx: %d
 	var results []IGD
 	resultChannel := make(chan IGD, 8)
 
-	socket, err := net.ListenUDP("udp4", &net.UDPAddr{})
+	socket, err := net.ListenMulticastUDP("udp4", nil, &net.UDPAddr{IP: ssdp.IP})
 	if err != nil {
 		l.Infoln(err)
 		return results

internal/versioner/staggered.go

@@ -232,7 +232,9 @@ func (v Staggered) expire(versions []string) {
 
 		versionTime, err := time.Parse(TimeFormat, filenameTag(file))
 		if err != nil {
-			l.Infof("Versioner: file name %q is invalid: %v", file, err)
+			if debug {
+				l.Debugf("Versioner: file name %q is invalid: %v", file, err)
+			}
 			continue
 		}
 		age := int64(time.Since(versionTime).Seconds())

protocol/DISCOVERY.md

@@ -1,138 +0,0 @@
-Device Discovery Protocol v2
-==========================
-
-Mode of Operation
------------------
-
-There are two distinct modes: "local discovery", performed on a LAN
-segment (broadcast domain) and "global discovery" performed over the
-Internet in general with the support of a well known server.
-
-Local discovery does not use Query packets. Instead Announcement packets
-are sent periodically and each participating device keeps a table of the
-announcements it has seen. On multihomed hosts the announcement packets
-should be sent on each interface that syncthing will accept connections.
-
-It is recommended that local discovery Announcement packets are sent on
-a 30 to 60 second interval, possibly with forced transmissions when a
-previously unknown device is discovered.
-
-Global discovery is made possible by periodically updating a global server
-using Announcement packets indentical to those transmitted for local
-discovery. The device performing discovery will transmit a Query packet to
-the global server and expect an Announcement packet in response. In case
-the global server has no knowledge of the queried device ID, there will be
-no response. A timeout is to be used to determine lookup failure.
-
-There is no message to unregister from the global server; instead
-registrations are forgotten after 60 minutes. It is recommended to
-send Announcement packets to the global server on a 30 minute interval.
-
-Packet Formats
---------------
-
-The Announcement packet has the following structure:
-
-     0                   1                   2                   3
-     0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
-    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-    |                      Magic (0x9D79BC39)                       |
-    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-    /                                                               /
-    \                       Device Structure                        \
-    /                                                               /
-    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-    |                    Number of Extra Devices                    |
-    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-    /                                                               /
-    \                Zero or more Device Structures                 \
-    /                                                               /
-    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-
-    Device Structure:
-
-     0                   1                   2                   3
-     0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
-    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-    |                         Length of ID                          |
-    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-    /                                                               /
-    \                     ID (variable length)                      \
-    /                                                               /
-    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-    |                      Number of Addresses                      |
-    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-    /                                                               /
-    \                Zero or more Address Structures                \
-    /                                                               /
-    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-
-    Address Structure:
-
-     0                   1                   2                   3
-     0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
-    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-    |                         Length of IP                          |
-    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-    /                                                               /
-    \                     IP (variable length)                      \
-    /                                                               /
-    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-    |             Port              |            0x0000             |
-    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-
-This is the XDR encoding of:
-
-    struct Announcement {
-        unsigned int Magic;
-        Device This;
-        Device Extra<>;
-    }
-
-    struct Device {
-        string ID<>;
-        Address Addresses<>;
-    }
-
-    struct Address {
-        opaque IP<>;
-        unsigned short Port;
-    }
-
-The first Device structure contains information about the sending device.
-The following zero or more Extra devices contain information about other
-devices known to the sending device.
-
-In the Address structure, the IP field can be of three differnt kinds;
-
- - A zero length indicates that the IP address should be taken from the
-   source address of the announcement packet, be it IPv4 or IPv6. The
-   source address must be a valid unicast address. This is only valid
-   in the first device structure, not in the list of extras.
-
- - A four byte length indicates that the address is an IPv4 unicast
-   address.
-
- - A sixteen byte length indicates that the address is an IPv6 unicast
-   address.
-
-The Query packet has the following structure:
-
-     0                   1                   2                   3
-     0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
-    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-    |                   Magic Number (0x2CA856F5)                   |
-    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-    |                      Length of Device ID                      |
-    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-    /                                                               /
-    \                  Device ID (variable length)                  \
-    /                                                               /
-    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-
-This is the XDR encoding of:
-
-    struct Announcement {
-        unsigned int MagicNumber;
-        string DeviceID<>;
-    }

protocol/PROTOCOL.md

@@ -1,723 +0,0 @@
-Block Exchange Protocol v1
-==========================
-
-Introduction and Definitions
-----------------------------
-
-BEP is used between two or more _devices_ thus forming a _cluster_. Each
-device has one or more _folders_ of files described by the _local
-model_, containing metadata and block hashes. The local model is sent to
-the other devices in the cluster. The union of all files in the local
-models, with files selected for highest change version, forms the
-_global model_. Each device strives to get its folders in sync with
-the global model by requesting missing or outdated blocks from the other
-devices in the cluster.
-
-File data is described and transferred in units of _blocks_, each being
-128 KiB (131072 bytes) in size.
-
-The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL
-NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED",  "MAY", and
-"OPTIONAL" in this document are to be interpreted as described in
-RFC 2119.
-
-Transport and Authentication
-----------------------------
-
-BEP is deployed as the highest level in a protocol stack, with the lower
-level protocols providing encryption and authentication.
-
-    +-----------------------------|
-    |   Block Exchange Protocol   |
-    |-----------------------------|
-    | Encryption & Auth (TLS 1.2) |
-    |-----------------------------|
-    |             TCP             |
-    |-----------------------------|
-    v             ...             v
-
-The encryption and authentication layer SHALL use TLS 1.2 or a higher
-revision. A strong cipher suite SHALL be used, with "strong cipher
-suite" being defined as being without known weaknesses and providing
-Perfect Forward Secrecy (PFS). Examples of strong cipher suites are
-given at the end of this document. This is not to be taken as an
-exhaustive list of allowed cipher suites but represents best practices
-at the time of writing.
-
-The exact nature of the authentication is up to the application, however
-it SHALL be based on the TLS certificate presented at the start of the
-connection. Possibilities include certificates signed by a common
-trusted CA, preshared certificates, preshared certificate fingerprints
-or certificate pinning combined with some out of band first
-verification. The reference implementation uses preshared certificate
-fingerprints (SHA-256) referred to as "Device IDs".
-
-There is no required order or synchronization among BEP messages except
-as noted per message type - any message type may be sent at any time and
-the sender need not await a response to one message before sending
-another. Responses MUST however be sent in the same order as the
-requests are received.
-
-The underlying transport protocol MUST be TCP.
-
-Messages
---------
-
-Every message starts with one 32 bit word indicating the message
-version, type and ID, followed by the length of the message. The header
-is in network byte order, i.e. big endian.
-
-     0                   1                   2                   3
-     0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
-    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-    |  Ver  |       Message ID      |      Type     |   Reserved  |C|
-    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-    |                            Length                             |
-    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-
-For BEP v1 the Version field is set to zero. Future versions with
-incompatible message formats will increment the Version field. A message
-with an unknown version is a protocol error and MUST result in the
-connection being terminated. A client supporting multiple versions MAY
-retry with a different protocol version upon disconnection.
-
-The Message ID is set to a unique value for each transmitted request
-message. In response messages it is set to the Message ID of the
-corresponding request message. The uniqueness requirement implies that
-no more than 4096 messages may be outstanding at any given moment. The
-ordering requirement implies that a response to a given message ID also
-means that all preceding messages have been received, specifically those
-which do not otherwise demand a response. Hence their message ID:s may
-be reused.
-
-The Type field indicates the type of data following the message header
-and is one of the integers defined below. A message of an unknown type
-is a protocol error and MUST result in the connection being terminated.
-
-The Compression bit "C" indicates the compression used for the message.
-
-For C=1:
-
-  * The Length field contains the length, in bytes, of the
-    compressed message data plus a four byte uncompressed length field.
-
-  * The compressed message data is preceeded by a 32 bit field denoting
-    the length of the uncompressed message.
-
-  * The message data is compressed using the LZ4 format and algorithm
-    described in https://code.google.com/p/lz4/.
-
-For C=0:
-
-  * The Length field contains the length, in bytes, of the
-    uncompressed message data.
-
-  * The message is not compressed.
-
-All data within the message (post decompression, if compression is
-in use) MUST be in XDR (RFC 1014) encoding. All fields shorter than 32
-bits and all variable length data MUST be padded to a multiple of 32
-bits. The actual data types in use by BEP, in XDR naming convention, are
-the following:
-
- - (unsigned) int   -- (unsigned) 32 bit integer
- - (unsigned) hyper -- (unsigned) 64 bit integer
- - opaque<>         -- variable length opaque data
- - string<>         -- variable length string
-
-The transmitted length of string and opaque data is the length of actual
-data, excluding any added padding. The encoding of opaque<> and string<>
-are identical, the distinction being solely one of interpretation.
-Opaque data should not be interpreted but can be compared bytewise to
-other opaque data. All strings MUST use the Unicode UTF-8 encoding,
-normalization form C.
-
-### Cluster Config (Type = 0)
-
-This informational message provides information about the cluster
-configuration as it pertains to the current connection. A Cluster Config
-message MUST be the first message sent on a BEP connection. Additional
-Cluster Config messages MUST NOT be sent after the initial exchange.
-
-#### Graphical Representation
-
-    ClusterConfigMessage Structure:
-
-     0                   1                   2                   3
-     0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
-    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-    |                     Length of ClientName                      |
-    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-    /                                                               /
-    \                 ClientName (variable length)                  \
-    /                                                               /
-    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-    |                    Length of ClientVersion                    |
-    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-    /                                                               /
-    \                ClientVersion (variable length)                \
-    /                                                               /
-    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-    |                       Number of Folders                       |
-    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-    /                                                               /
-    \                Zero or more Folder Structures                 \
-    /                                                               /
-    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-    |                       Number of Options                       |
-    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-    /                                                               /
-    \                Zero or more Option Structures                 \
-    /                                                               /
-    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-
-
-    Folder Structure:
-
-     0                   1                   2                   3
-     0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
-    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-    |                         Length of ID                          |
-    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-    /                                                               /
-    \                     ID (variable length)                      \
-    /                                                               /
-    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-    |                       Number of Devices                       |
-    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-    /                                                               /
-    \                Zero or more Device Structures                 \
-    /                                                               /
-    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-
-
-    Device Structure:
-
-     0                   1                   2                   3
-     0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
-    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-    |                         Length of ID                          |
-    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-    /                                                               /
-    \                     ID (variable length)                      \
-    /                                                               /
-    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-    |                             Flags                             |
-    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-    |                                                               |
-    +                  Max Local Version (64 bits)                  +
-    |                                                               |
-    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-
-
-    Option Structure:
-
-     0                   1                   2                   3
-     0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
-    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-    |                         Length of Key                         |
-    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-    /                                                               /
-    \                     Key (variable length)                     \
-    /                                                               /
-    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-    |                        Length of Value                        |
-    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-    /                                                               /
-    \                    Value (variable length)                    \
-    /                                                               /
-    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-
-#### Fields
-
-The ClientName and ClientVersion fields identify the implementation. The
-values SHOULD be simple strings identifying the implementation name, as
-a user would expect to see it, and the version string in the same
-manner. An example ClientName is "syncthing" and an example
-ClientVersion is "v0.7.2". The ClientVersion field SHOULD follow the
-patterns laid out in the [Semantic Versioning](http://semver.org/)
-standard.
-
-The Folders field lists all folders that will be synchronized
-over the current connection. Each folder has a list of participating
-Devices. Each device has an associated Flags field to indicate the sharing
-mode of that device for the folder in question. See the discussion on
-Sharing Modes.
-
-The Device Flags field contains the following single bit flags:
-
-     0                   1                   2                   3
-     0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
-    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-    |          Reserved         |Pri|          Reserved       |I|R|T|
-    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-
- - Bit 31 ("T", Trusted) is set for devices that participate in trusted
-   mode.
-
- - Bit 30 ("R", Read Only) is set for devices that participate in read
-   only mode.
-
- - Bit 29 ("I", Introducer) is set for devices that are trusted as cluster
-   introducers.
-
- - Bits 16 through 28 are reserved and MUST be set to zero.
-
- - Bits 14-15 ("Pri) indicate the device's upload priority for this
-   folder. Possible values are:
-
-    - 00: The default. Normal priority.
-
-    - 01: High priority. Other devices SHOULD favour requesting files from
-      this device over devices with normal or low priority.
-
-    - 10: Low priority. Other devices SHOULD avoid requesting files from
-      this device when they are available from other devices.
-
-    - 11: Sharing disabled. Other devices SHOULD NOT request files from
-      this device.
-
- - Bits 0 through 14 are reserved and MUST be set to zero.
-
-Exactly one of the T and R bits MUST be set.
-
-The per device Max Local Version field contains the highest local file
-version number of the files already known to be in the index sent by
-this device. If nothing is known about the index of a given device, this
-field MUST be set to zero. When receiving a Cluster Config message with
-a non-zero Max Local Version for the local device ID, a device MAY elect to
-send an Index Update message containing only files with higher local
-version numbers in place of the initial Index message.
-
-The Options field contain option values to be used in an implementation
-specific manner. The options list is conceptually a map of Key => Value
-items, although it is transmitted in the form of a list of (Key, Value)
-pairs, both of string type. Key ID:s are implementation specific. An
-implementation MUST ignore unknown keys. An implementation MAY impose
-limits on the length keys and values. The options list may be used to
-inform devices of relevant local configuration options such as rate
-limiting or make recommendations about request parallelism, device
-priorities, etc. An empty options list is valid for devices not having any
-such information to share. Devices MAY NOT make any assumptions about
-peers acting in a specific manner as a result of sent options.
-
-#### XDR
-
-    struct ClusterConfigMessage {
-        string ClientName<>;
-        string ClientVersion<>;
-        Folder Folders<>;
-        Option Options<>;
-    }
-
-    struct Folder {
-        string ID<>;
-        Device Devices<>;
-    }
-
-    struct Device {
-        string ID<>;
-        unsigned int Flags;
-        unsigned hyper MaxLocalVersion;
-    }
-
-    struct Option {
-        string Key<>;
-        string Value<>;
-    }
-
-### Index (Type = 1) and Index Update (Type = 6)
-
-The Index and Index Update messages define the contents of the senders
-folder. An Index message represents the full contents of the
-folder and thus supersedes any previous index. An Index Update
-amends an existing index with new information, not affecting any entries
-not included in the message. An Index Update MAY NOT be sent unless
-preceded by an Index, unless a non-zero Max Local Version has been
-announced for the given folder by the peer device.
-
-An Index or Index Update message MUST be sent for each folder
-included in the Cluster Config message, and MUST be sent before any
-other message referring to that folder. A device with no data to
-advertise MUST send an empty Index message (a file list of zero length).
-If the folder contents change from non-empty to empty, an empty
-Index message MUST be sent. There is no response to the Index message.
-
-#### Graphical Representation
-
-    IndexMessage Structure:
-
-     0                   1                   2                   3
-     0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
-    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-    |                       Length of Folder                        |
-    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-    /                                                               /
-    \                   Folder (variable length)                    \
-    /                                                               /
-    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-    |                        Number of Files                        |
-    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-    /                                                               /
-    \               Zero or more FileInfo Structures                \
-    /                                                               /
-    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-
-
-    FileInfo Structure:
-
-     0                   1                   2                   3
-     0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
-    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-    |                        Length of Name                         |
-    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-    /                                                               /
-    \                    Name (variable length)                     \
-    /                                                               /
-    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-    |                             Flags                             |
-    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-    |                                                               |
-    +                      Modified (64 bits)                       +
-    |                                                               |
-    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-    |                                                               |
-    +                       Version (64 bits)                       +
-    |                                                               |
-    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-    |                                                               |
-    +                    Local Version (64 bits)                    +
-    |                                                               |
-    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-    |                       Number of Blocks                        |
-    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-    /                                                               /
-    \               Zero or more BlockInfo Structures               \
-    /                                                               /
-    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-
-
-    BlockInfo Structure:
-
-     0                   1                   2                   3
-     0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
-    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-    |                             Size                              |
-    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-    |                        Length of Hash                         |
-    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-    /                                                               /
-    \                    Hash (variable length)                     \
-    /                                                               /
-    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-
-#### Fields
-
-The Folder field identifies the folder that the index message
-pertains to. For single folder implementations the device MAY send an
-empty folder ID or use the string "default".
-
-The Name is the file name path relative to the folder root. Like all
-strings in BEP, the Name is always in UTF-8 NFC regardless of operating
-system or file system specific conventions. The Name field uses the
-slash character ("/") as path separator, regardless of the
-implementation's operating system conventions. The combination of
-Folder and Name uniquely identifies each file in a cluster.
-
-The Version field is the value of a cluster wide Lamport clock
-indicating when the change was detected. The clock ticks on every
-detected and received change. The combination of Folder, Name and
-Version uniquely identifies the contents of a file at a given point in
-time.
-
-The Local Version field is the value of a device local monotonic clock at
-the time of last local database update to a file. The clock ticks on
-every local database update.
-
-The Flags field is made up of the following single bit flags:
-
-     0                   1                   2                   3
-     0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
-    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-    |              Reserved       |U|S|P|I|D|   Unix Perm. & Mode   |
-    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-
- - The lower 12 bits hold the common Unix permission and mode bits. An
-   implementation MAY ignore or interpret these as is suitable on the host
-   operating system.
-
- - Bit 19 ("D") is set when the file has been deleted. The block list
-   SHALL be of length zero and the modification time indicates the time
-   of deletion or, if the time of deletion is not reliably determinable,
-   the last known modification time.
-
- - Bit 18 ("I") is set when the file is invalid and unavailable for
-   synchronization. A peer MAY set this bit to indicate that it can
-   temporarily not serve data for the file.
-
- - Bit 17 ("P") is set when there is no permission information for the
-   file. This is the case when it originates on a non-permission-
-   supporting file system. Changes to only permission bits SHOULD be
-   disregarded on files with this bit set. The permissions bits MUST be
-   set to the octal value 0666.
-
- - Bit 16 ("S") is set when the file is a symbolic link. The block list
-   SHALL be of one or more blocks since the target of the symlink is
-   stored within the blocks of the file.
-
- - Bit 15 ("U") is set when the symbolic links target does not exist.
-   On systems where symbolic links have types, this bit being means
-   that the default file symlink SHALL be used. If this bit is unset
-   bit 19 will decide the type of symlink to be created.
-
- - Bit 0 through 14 are reserved for future use and SHALL be set to
-   zero.
-
-The hash algorithm is implied by the Hash length. Currently, the hash
-MUST be 32 bytes long and computed by SHA256.
-
-The Modified time is expressed as the number of seconds since the Unix
-Epoch (1970-01-01 00:00:00 UTC).
-
-In the rare occasion that a file is simultaneously and independently
-modified by two devices in the same cluster and thus end up on the same
-Version number after modification, the Modified field is used as a tie
-breaker (higher being better), followed by the hash values of the file
-blocks (lower being better).
-
-The Blocks list contains the size and hash for each block in the file.
-Each block represents a 128 KiB slice of the file, except for the last
-block which may represent a smaller amount of data.
-
-#### XDR
-
-    struct IndexMessage {
-        string Folder<>;
-        FileInfo Files<>;
-    }
-
-    struct FileInfo {
-        string Name<>;
-        unsigned int Flags;
-        hyper Modified;
-        unsigned hyper Version;
-        unsigned hyper LocalVer;
-        BlockInfo Blocks<>;
-    }
-
-    struct BlockInfo {
-        unsigned int Size;
-        opaque Hash<>;
-    }
-
-### Request (Type = 2)
-
-The Request message expresses the desire to receive a data block
-corresponding to a part of a certain file in the peer's folder.
-
-#### Graphical Representation
-
-    RequestMessage Structure:
-
-     0                   1                   2                   3
-     0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
-    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-    |                       Length of Folder                        |
-    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-    /                                                               /
-    \                   Folder (variable length)                    \
-    /                                                               /
-    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-    |                        Length of Name                         |
-    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-    /                                                               /
-    \                    Name (variable length)                     \
-    /                                                               /
-    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-    |                                                               |
-    +                       Offset (64 bits)                        +
-    |                                                               |
-    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-    |                             Size                              |
-    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-
-#### Fields
-
-The Folder and Name fields are as documented for the Index message.
-The Offset and Size fields specify the region of the file to be
-transferred. This SHOULD equate to exactly one block as seen in an Index
-message.
-
-#### XDR
-
-    struct RequestMessage {
-        string Folder<>;
-        string Name<>;
-        unsigned hyper Offset;
-        unsigned int Size;
-    }
-
-### Response (Type = 3)
-
-The Response message is sent in response to a Request message.
-
-#### Graphical Representation
-
-     0                   1                   2                   3
-     0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
-    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-    |                        Length of Data                         |
-    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-    /                                                               /
-    \                    Data (variable length)                     \
-    /                                                               /
-    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-
-#### Fields
-
-The Data field contains either a full 128 KiB block, a shorter block in
-the case of the last block in a file, or is empty (zero length) if the
-requested block is not available.
-
-#### XDR
-
-    struct ResponseMessage {
-        opaque Data<>
-    }
-
-### Ping (Type = 4)
-
-The Ping message is used to determine that a connection is alive, and to
-keep connections alive through state tracking network elements such as
-firewalls and NAT gateways. The Ping message has no contents.
-
-### Pong (Type = 5)
-
-The Pong message is sent in response to a Ping. The Pong message has no
-contents, but copies the Message ID from the Ping.
-
-### Close (Type = 7)
-
-The Close message MAY be sent to indicate that the connection will be
-torn down due to an error condition. A Close message MUST NOT be
-followed by further messages.
-
-#### Graphical Representation
-
-     0                   1                   2                   3
-     0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
-    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-    |                       Length of Reason                        |
-    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-    /                                                               /
-    \                   Reason (variable length)                    \
-    /                                                               /
-    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-
-#### Fields
-
-The Reason field contains a human description of the error condition,
-suitable for consumption by a human.
-
-    struct CloseMessage {
-        string Reason<1024>;
-    }
-
-Sharing Modes
--------------
-
-### Trusted
-
-Trusted mode is the default sharing mode. Updates are exchanged in both
-directions.
-
-    +------------+     Updates      /---------\
-    |            |  ----------->   /           \
-    |   Device   |                 |  Cluster  |
-    |            |  <-----------   \           /
-    +------------+     Updates      \---------/
-
-### Read Only
-
-In read only mode, a device does not synchronize the local folder to
-the cluster, but publishes changes to its local folder contents as
-usual. The local folder can be seen as a "master copy" that is never
-affected by the actions of other cluster devices.
-
-    +------------+     Updates      /---------\
-    |            |  ----------->   /           \
-    |   Device   |                 |  Cluster  |
-    |            |                 \           /
-    +------------+                  \---------/
-
-Message Limits
---------------
-
-An implementation MAY impose reasonable limits on the length of message
-fields to aid robustness in the face of corruption or broken
-implementations. These limits, if imposed, SHOULD NOT be more
-restrictive than the following:
-
-### Index and Index Update Messages
-
- - Folder: 64 bytes
- - Number of Files: 10.000.000
- - Name: 1024 bytes
- - Number of Blocks: 1.000.000
- - Hash: 64 bytes
-
-### Request Messages
-
- - Folder: 64 bytes
- - Name: 1024 bytes
-
-### Response Messages
-
- - Data: 256 KiB
-
-### Options Message
-
- - Number of Options: 64
- - Key: 64 bytes
- - Value: 1024 bytes
-
-Example Exchange
-----------------
-
-          A            B
-     1. Index->      <-Index
-     2. Request->
-     3. Request->
-     4. Request->
-     5. Request->
-     6.         <-Response
-     7.         <-Response
-     8.         <-Response
-     9.         <-Response
-    10. Index Update->
-        ...
-    11. Ping->
-    12.            <-Pong
-
-The connection is established and at 1. both peers send Index records.
-The Index records are received and both peers recompute their knowledge
-of the data in the cluster. In this example, peer A has four missing or
-outdated blocks. At 2 through 5 peer A sends requests for these blocks.
-The requests are received by peer B, who retrieves the data from the
-folder and transmits Response records (6 through 9). Device A updates
-their folder contents and transmits an Index Update message (10).
-Both peers enter idle state after 10. At some later time 11, peer A
-determines that it has not seen data from B for some time and sends a
-Ping request. A response is sent at 12.
-
-Examples of Strong Cipher Suites
---------------------------------
-
-* 0x009F DHE-RSA-AES256-GCM-SHA384 (TLSv1.2 DH RSA AESGCM(256) AEAD)
-* 0x006B DHE-RSA-AES256-SHA256 (TLSv1.2 DH RSA AES(256) SHA256)
-* 0xC030 ECDHE-RSA-AES256-GCM-SHA384 (TLSv1.2 ECDH RSA AESGCM(256) AEAD)
-* 0xC028 ECDHE-RSA-AES256-SHA384 (TLSv1.2 ECDH RSA AES(256) SHA384)
-* 0x009E DHE-RSA-AES128-GCM-SHA256 (TLSv1.2 DH RSA AESGCM(128) AEAD)
-* 0x0067 DHE-RSA-AES128-SHA256 (TLSv1.2 DH RSA AES(128) SHA256)
-* 0xC02F ECDHE-RSA-AES128-GCM-SHA256 (TLSv1.2 ECDH RSA AESGCM(128) AEAD)
-* 0xC027 ECDHE-RSA-AES128-SHA256 (TLSv1.2 ECDH RSA AES(128) SHA256)

protocol/README.md

@@ -0,0 +1,2 @@
+Syncthing uses the protocols defined in
+https://github.com/syncthing/protocol/.

test/all.sh

@@ -1,7 +0,0 @@
-#!/bin/bash
-set -euo pipefail
-IFS=$'\n\t'
-
-go test -tags integration -v -short
-./test-merge.sh
-./test-delupd.sh

test/cli_test.go

@@ -15,11 +15,12 @@
 
 // +build integration
 
-package integration_test
+package integration
 
 import (
 	"os"
 	"os/exec"
+	"path/filepath"
 	"testing"
 	"time"
 )
@@ -54,6 +55,14 @@ func TestCLIReset(t *testing.T) {
 			t.Errorf("%s still exists", dir)
 		}
 	}
+
+	// Clean up
+
+	dirs, err = filepath.Glob("*.syncthing-reset-*")
+	if err != nil {
+		t.Fatal(err)
+	}
+	removeAll(dirs...)
 }
 
 func TestCLIGenerate(t *testing.T) {

test/f1/cert.pem

@@ -1,23 +0,0 @@
------BEGIN CERTIFICATE-----
-MIID3jCCAkigAwIBAgIBADALBgkqhkiG9w0BAQUwFDESMBAGA1UEAxMJc3luY3Ro
-aW5nMB4XDTE0MDMxNDA3MDA1M1oXDTQ5MTIzMTIzNTk1OVowFDESMBAGA1UEAxMJ
-c3luY3RoaW5nMIIBojANBgkqhkiG9w0BAQEFAAOCAY8AMIIBigKCAYEArDOcd5ft
-R7SnalxF1ckU3lDQpgfMIPhFDU//4dvdSSFevrMuVDTbUYhyCfGtg/g+F5TmKhZg
-E2peYhllITupz5MP7OHGaO2GHf2XnUDD4QUO3E+KVAUw7dyFSwy09esqApVLzH3+
-ov+QXyyzmRWPsJe9u18BHU1Hob/RmBhS9m2CAJgzN6EJ8KGjApiW3iR8lD/hjVyi
-IVde8IRD6qYHEJYiPJuziTVcQpCblVYxTz3ScmmT190/O9UvViIpcOPQdwgOdewP
-NNMK35c9Edt0AH5flYp6jgrja9NkLQJ3+KOiro6yl9IUS5w87GMxI8qzI8SgCAZZ
-pYSoLbu1FJPvxV4p5eHwuprBCwmFYZWw6Y7rqH0sN52C+3TeObJCMNP9ilPadqRI
-+G0Q99TCaloeR022x33r/8D8SIn3FP35zrlFM+DvqlxoS6glbNb/Bj3p9vN0XONO
-RCuynOGe9F/4h/DaNnrbrRWqJOxBsZTsbbcJaKATfWU/Z9GcC+pUpPRhAgMBAAGj
-PzA9MA4GA1UdDwEB/wQEAwIAoDAdBgNVHSUEFjAUBggrBgEFBQcDAQYIKwYBBQUH
-AwIwDAYDVR0TAQH/BAIwADALBgkqhkiG9w0BAQUDggGBAFF8dklGoC43fMrUZfb4
-6areRWG8quO6cSX6ATzRQVJ8WJ5VcC7OJk8/FeiYA+wcvUJ/1Zm/VHMYugtOz5M8
-CrWAF1r9D3Xfe5D8qfrEOYG2XjxD2nFHCnkbY4fP+SMSuXaDs7ixQnzw0UFh1wsV
-9Jy/QrgXFAIFZtu1Nz+rrvoAgw24gkDhY3557MbmYfmfPsJ8cw+WJ845sxGMPFF2
-c+5EN0jiSm0AwZK11BMJda36ke829UZctDkopbGEg1peydDR5LiyhiTAPtWn7uT/
-PkzHYLuaECAkVbWC3bZLocMGOP6F1pG+BMr00NJgVy05ASQzi4FPjcZQNNY8s69R
-ZgoCIBaJZq3ti1EsZQ1H0Ynm2c2NMVKdj4czoy8a9ZC+DCuhG7EV5Foh20VhCWgA
-RfPhlHVJthuimsWBx39X85gjSBR017uk0AxOJa6pzh/b/RPCRtUfX8EArInS3XCf
-RvRtdrnBZNI3tiREopZGt0SzgDZUs4uDVBUX8HnHzyFJrg==
------END CERTIFICATE-----

test/f1/config.xml

@@ -1,32 +0,0 @@
-<configuration version="2">
-    <folder id="default" directory="s1" ro="true" ignorePerms="false">
-        <device id="I6KAH7666SLLL5PFXSOAUFJCDZYAOMLEKCP2GB3BV5RQST3PSROA"></device>
-        <device id="JMFJCXBGZDE4BOCJE3VF65GYZNAIVJRET3J6HMRAUQIGJOFKNHMQ"></device>
-        <versioning></versioning>
-    </folder>
-    <device id="I6KAH7666SLLL5PFXSOAUFJCDZYAOMLEKCP2GB3BV5RQST3PSROA" name="f1">
-        <address>127.0.0.1:22001</address>
-    </device>
-    <device id="JMFJCXBGZDE4BOCJE3VF65GYZNAIVJRET3J6HMRAUQIGJOFKNHMQ" name="f2">
-        <address>127.0.0.1:22002</address>
-    </device>
-    <gui enabled="true" tls="false">
-        <address>127.0.0.1:8081</address>
-        <apikey>abc123</apikey>
-    </gui>
-    <options>
-        <listenAddress>127.0.0.1:22001</listenAddress>
-        <globalAnnounceServer>announce.syncthing.net:22025</globalAnnounceServer>
-        <globalAnnounceEnabled>false</globalAnnounceEnabled>
-        <localAnnounceEnabled>true</localAnnounceEnabled>
-        <localAnnouncePort>21025</localAnnouncePort>
-        <parallelRequests>16</parallelRequests>
-        <maxSendKbps>500</maxSendKbps>
-        <rescanIntervalS>10</rescanIntervalS>
-        <reconnectionIntervalS>5</reconnectionIntervalS>
-        <maxChangeKbps>10000</maxChangeKbps>
-        <startBrowser>false</startBrowser>
-        <upnpEnabled>false</upnpEnabled>
-        <urAccepted>-1</urAccepted>
-    </options>
-</configuration>