util1: handle out-of-range times in timestring

fixes a one byte stack overflow when using RSYNC_PROXY with a
malicious proxy.

Reach: only when RSYNC_PROXY is set and a malicious or MITM'd
proxy returns the pathological response.  The byte written is
always '\0' and the attacker doesn't choose the offset, so impact
is corruption of one adjacent stack byte and possible later
misbehaviour or crash -- no information disclosure beyond the
existing rprintf of buffer contents.

Reported by Aisle Research via Michal Ruprich

.cirrus.yml

@@ -1,23 +0,0 @@
-freebsd_task:
-  name: FreeBSD
-  freebsd_instance:
-    image_family: freebsd-13-1
-  env:
-    PATH: /usr/local/bin:$PATH
-  prep_script:
-    - dd if=/dev/zero of=/tmp/zpool bs=1M count=1024
-    - zpool create -m `pwd`/testtmp zpool /tmp/zpool
-    - pkg install -y bash autotools m4 xxhash zstd liblz4 wget
-    - wget -O git-version.h https://gist.githubusercontent.com/WayneD/c11243fa374fc64d4e42f2855c8e3827/raw/rsync-git-version.h
-  configure_script:
-    - CPPFLAGS=-I/usr/local/include/ LDFLAGS=-L/usr/local/lib/ ./configure --disable-md2man
-  make_script:
-    - make
-  install_script:
-    - make install
-  info_script:
-    - rsync --version
-  test_script:
-    - RSYNC_EXPECT_SKIPPED=acls-default,acls,crtimes,protected-regular make check
-  ssl_file_list_script:
-    - rsync-ssl --no-motd download.samba.org::rsyncftp/ || true

.github/workflows/almalinux-8-build.yml

@@ -0,0 +1,76 @@
+name: Test rsync on AlmaLinux 8
+
+# Older-LTS coverage on the Fedora/RHEL family to help with backporting
+# security fixes. AlmaLinux 8 is the RHEL 8 rebuild and is the oldest
+# active LTS in this family (RHEL 8 full support runs to 2029).
+# GitHub Actions has no native runner for this family, so the job runs
+# inside an almalinux:8 container hosted on ubuntu-latest.
+
+on:
+  push:
+    branches: [ master ]
+    paths-ignore:
+      - '.github/workflows/*.yml'
+      - '!.github/workflows/almalinux-8-build.yml'
+  pull_request:
+    paths-ignore:
+      - '.github/workflows/*.yml'
+      - '!.github/workflows/almalinux-8-build.yml'
+  schedule:
+    - cron: '42 8 * * *'
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    container:
+      image: almalinux:8
+    name: Test rsync on AlmaLinux 8
+    steps:
+    - name: install git
+      # actions/checkout needs git in the container before the checkout step.
+      run: dnf -y install git
+    - uses: actions/checkout@v4
+      with:
+        fetch-depth: 0
+    - name: prep
+      # PowerTools is needed for libzstd-devel etc; xxhash and lz4 dev
+      # headers live in EPEL on RHEL 8. The default python3 on RHEL 8
+      # is 3.6, which is too old for runtests.py (uses capture_output=
+      # / text= introduced in 3.7), so install python39 and point
+      # /usr/bin/python3 at it.
+      run: |
+        dnf -y install epel-release
+        dnf config-manager --set-enabled powertools
+        dnf -y install gcc gcc-c++ make autoconf automake m4 \
+            python39 python39-pip diffutils \
+            openssl openssl-devel \
+            attr libattr-devel acl libacl-devel \
+            zstd libzstd-devel \
+            lz4 lz4-devel \
+            xxhash xxhash-devel
+        alternatives --set python3 /usr/bin/python3.9
+        pip3 install commonmark
+    - name: configure
+      run: ./configure --with-rrsync
+    - name: make
+      run: make
+    - name: info
+      run: ./rsync --version
+    - name: check
+      # In the container we already run as root, so no sudo. The
+      # crtimes-not-supported skip matches the other Linux jobs.
+      run: RSYNC_EXPECT_SKIPPED=crtimes make check
+    - name: ssl file list
+      run: ./rsync-ssl --no-motd download.samba.org::rsyncftp/ || true
+    - name: save artifact
+      uses: actions/upload-artifact@v4
+      with:
+        name: almalinux-8-bin
+        path: |
+          rsync
+          rsync-ssl
+          rsync.1
+          rsync-ssl.1
+          rsyncd.conf.5
+          rrsync.1
+          rrsync

.github/workflows/build.yml

@@ -1,125 +0,0 @@
-name: build
-
-on:
-  push:
-    branches: [ master ]
-    paths-ignore: [ .cirrus.yml ]
-  pull_request:
-    branches: [ master ]
-    paths-ignore: [ .cirrus.yml ]
-  schedule:
-    - cron: '42 8 * * *'
-
-jobs:
-
-  ubuntu-build:
-    runs-on: ubuntu-20.04
-    steps:
-    - uses: actions/checkout@v2
-    - name: prep
-      run: |
-        sudo apt-get install acl libacl1-dev attr libattr1-dev liblz4-dev libzstd-dev libxxhash-dev python3-cmarkgfm openssl wget
-        wget -O git-version.h https://gist.githubusercontent.com/WayneD/c11243fa374fc64d4e42f2855c8e3827/raw/rsync-git-version.h
-        echo "/usr/local/bin" >>$GITHUB_PATH
-    - name: configure
-      run: ./configure --with-rrsync
-    - name: make
-      run: make
-    - name: install
-      run: sudo make install
-    - name: info
-      run: rsync --version
-    - name: check
-      run: sudo RSYNC_EXPECT_SKIPPED=crtimes make check
-    - name: check30
-      run: sudo RSYNC_EXPECT_SKIPPED=crtimes make check30
-    - name: check29
-      run: sudo RSYNC_EXPECT_SKIPPED=crtimes make check29
-    - name: ssl file list
-      run: rsync-ssl --no-motd download.samba.org::rsyncftp/ || true
-    - name: save artifact
-      uses: actions/upload-artifact@v2
-      with:
-        name: ubuntu-bin
-        path: |
-          rsync
-          rsync-ssl
-          rsync.1
-          rsync-ssl.1
-          rsyncd.conf.5
-          rrsync.1
-          rrsync
-
-  macos-build:
-    runs-on: macos-latest
-    steps:
-    - uses: actions/checkout@v2
-    - name: prep
-      run: |
-        brew install automake openssl xxhash zstd lz4 wget
-        sudo pip3 install commonmark
-        wget -O git-version.h https://gist.githubusercontent.com/WayneD/c11243fa374fc64d4e42f2855c8e3827/raw/rsync-git-version.h
-        echo "/usr/local/bin" >>$GITHUB_PATH
-    - name: configure
-      run: CPPFLAGS=-I/usr/local/opt/openssl/include/ LDFLAGS=-L/usr/local/opt/openssl/lib/ ./configure --with-rrsync
-    - name: make
-      run: make
-    - name: install
-      run: sudo make install
-    - name: info
-      run: rsync --version
-    - name: check
-      run: sudo RSYNC_EXPECT_SKIPPED=acls-default,chmod-temp-dir,chown-fake,devices-fake,dir-sgid,protected-regular,xattrs-hlink,xattrs make check
-    - name: ssl file list
-      run: rsync-ssl --no-motd download.samba.org::rsyncftp/ || true
-    - name: save artifact
-      uses: actions/upload-artifact@v2
-      with:
-        name: macos-bin
-        path: |
-          rsync
-          rsync-ssl
-          rsync.1
-          rsync-ssl.1
-          rsyncd.conf.5
-          rrsync.1
-          rrsync
-
-  cygwin-build:
-    runs-on: windows-2022
-    if: (github.event_name == 'schedule' || contains(github.event.head_commit.message, '[buildall]'))
-    steps:
-    - uses: actions/checkout@v2
-    - name: cygwin
-      run: choco install -y --no-progress cygwin cyg-get
-    - name: prep
-      run: |
-        cyg-get make autoconf automake gcc-core attr libattr-devel python39 python39-pip libzstd-devel liblz4-devel libssl-devel libxxhash0 libxxhash-devel
-        curl.exe -o git-version.h https://gist.githubusercontent.com/WayneD/c11243fa374fc64d4e42f2855c8e3827/raw/rsync-git-version.h
-        echo "C:/tools/cygwin/bin" >>$Env:GITHUB_PATH
-    - name: commonmark
-      run: bash -c 'python3 -mpip install --user commonmark'
-    - name: configure
-      run: bash -c './configure --with-rrsync'
-    - name: make
-      run: bash -c 'make'
-    - name: install
-      run: bash -c 'make install'
-    - name: info
-      run: bash -c '/usr/local/bin/rsync --version'
-    - name: check
-      run: bash -c 'RSYNC_EXPECT_SKIPPED=acls-default,acls,chown,devices,dir-sgid,protected-regular make check'
-    - name: ssl file list
-      run: bash -c 'PATH="/usr/local/bin:$PATH" rsync-ssl --no-motd download.samba.org::rsyncftp/ || true'
-    - name: save artifact
-      uses: actions/upload-artifact@v2
-      with:
-        name: cygwin-bin
-        path: |
-          rsync.exe
-          rsync-ssl
-          rsync.1
-          rsync-ssl.1
-          rsyncd.conf.5
-          rrsync.1
-          rrsync

.github/workflows/cygwin-build.yml

@@ -0,0 +1,55 @@
+name: Test rsync on Cygwin
+
+on:
+  push:
+    branches: [ master ]
+    paths-ignore:
+      - '.github/workflows/*.yml'
+      - '!.github/workflows/cygwin-build.yml'
+  pull_request:
+    paths-ignore:
+      - '.github/workflows/*.yml'
+      - '!.github/workflows/cygwin-build.yml'
+  schedule:
+    - cron: '42 8 * * *'
+
+jobs:
+  test:
+    runs-on: windows-2022
+    name: Test rsync on Cygwin
+    steps:
+    - uses: actions/checkout@v4
+      with:
+        fetch-depth: 0
+    - name: cygwin
+      run: choco install -y --no-progress cygwin cyg-get
+    - name: prep
+      run: |
+        cyg-get make autoconf automake gcc-core attr libattr-devel python39 python39-pip libzstd-devel liblz4-devel libssl-devel libxxhash0 libxxhash-devel
+        echo "C:/tools/cygwin/bin" >>$Env:GITHUB_PATH
+    - name: commonmark
+      run: bash -c 'python3 -mpip install --user commonmark'
+    - name: configure
+      run: bash -c './configure --with-rrsync'
+    - name: make
+      run: bash -c 'make'
+    - name: install
+      run: bash -c 'make install'
+    - name: info
+      run: bash -c '/usr/local/bin/rsync --version'
+    - name: check
+      run: bash -c 'RSYNC_EXPECT_SKIPPED=acls-default,acls,bare-do-open-symlink-race,chdir-symlink-race,chmod-symlink-race,chown,daemon-chroot-acl,devices,dir-sgid,protected-regular,sender-flist-symlink-leak,simd-checksum,symlink-dirlink-basis make check'
+    - name: ssl file list
+      run: bash -c 'PATH="/usr/local/bin:$PATH" rsync-ssl --no-motd download.samba.org::rsyncftp/ || true'
+    - name: save artifact
+      uses: actions/upload-artifact@v4
+      with:
+        name: cygwin-bin
+        path: |
+          rsync.exe
+          rsync-ssl
+          rsync.1
+          rsync-ssl.1
+          rsyncd.conf.5
+          rrsync.1
+          rrsync

.github/workflows/freebsd-build.yml

@@ -0,0 +1,49 @@
+name: Test rsync on FreeBSD
+
+on:
+  push:
+    branches: [ master ]
+    paths-ignore:
+      - '.github/workflows/*.yml'
+      - '!.github/workflows/freebsd-build.yml'
+  pull_request:
+    paths-ignore:
+      - '.github/workflows/*.yml'
+      - '!.github/workflows/freebsd-build.yml'
+  schedule:
+    - cron: '42 8 * * *'
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    name: Test rsync on FreeBSD
+    steps:
+    - uses: actions/checkout@v4
+      with:
+        fetch-depth: 0
+    - name: Test in FreeBSD VM
+      id: test
+      uses: vmactions/freebsd-vm@v1
+      with:
+        usesh: true
+        prepare: |
+          pkg install -y bash autotools m4 devel/xxhash zstd liblz4 python3 archivers/liblz4 git
+        run: |
+          freebsd-version
+          ./configure --with-rrsync -disable-zstd --disable-md2man --disable-xxhash --disable-lz4
+          make
+          ./rsync --version
+          make check
+          ./rsync-ssl --no-motd download.samba.org::rsyncftp/ || true
+    - name: save artifact
+      uses: actions/upload-artifact@v4
+      with:
+        name: freebsd-bin
+        path: |
+          rsync
+          rsync-ssl
+          rsync.1
+          rsync-ssl.1
+          rsyncd.conf.5
+          rrsync.1
+          rrsync

.github/workflows/macos-build.yml

@@ -0,0 +1,57 @@
+name: Test rsync on macOS
+
+on:
+  push:
+    branches: [ master ]
+    paths-ignore:
+      - '.github/workflows/*.yml'
+      - '!.github/workflows/macos-build.yml'
+  pull_request:
+    paths-ignore:
+      - '.github/workflows/*.yml'
+      - '!.github/workflows/macos-build.yml'
+  schedule:
+    - cron: '42 8 * * *'
+
+jobs:
+  test:
+    runs-on: macos-latest
+    name: Test rsync on macOS
+    steps:
+    - uses: actions/checkout@v4
+      with:
+        fetch-depth: 0
+    - name: prep
+      run: |
+        brew install automake openssl xxhash zstd lz4
+        pip3 install --user --break-system-packages commonmark
+        echo "$(brew --prefix)/bin" >>$GITHUB_PATH
+    - name: configure
+      run: |
+        BREW_PREFIX=$(brew --prefix)
+        OPENSSL_PREFIX=$(brew --prefix openssl)
+        CPPFLAGS="-I${BREW_PREFIX}/include -I${OPENSSL_PREFIX}/include" \
+        LDFLAGS="-L${BREW_PREFIX}/lib -L${OPENSSL_PREFIX}/lib" \
+        ./configure --with-rrsync
+    - name: make
+      run: make
+    - name: install
+      run: sudo make install
+    - name: info
+      run: rsync --version
+    - name: check
+      run: sudo RSYNC_EXPECT_SKIPPED=acls-default,chmod-temp-dir,chown-fake,daemon-chroot-acl,devices-fake,dir-sgid,protected-regular,simd-checksum,xattrs-hlink,xattrs make check
+    - name: ssl file list
+      run: rsync-ssl --no-motd download.samba.org::rsyncftp/ || true
+    - name: save artifact
+      uses: actions/upload-artifact@v4
+      with:
+        name: macos-bin
+        path: |
+          rsync
+          rsync-ssl
+          rsync.1
+          rsync-ssl.1
+          rsyncd.conf.5
+          rrsync.1
+          rrsync

.github/workflows/netbsd-build.yml

@@ -0,0 +1,51 @@
+name: Test rsync on NetBSD
+
+on:
+  push:
+    branches: [ master ]
+    paths-ignore:
+      - '.github/workflows/*.yml'
+      - '!.github/workflows/netbsd-build.yml'
+  pull_request:
+    branches: [ master ]
+    paths-ignore:
+      - '.github/workflows/*.yml'
+      - '!.github/workflows/netbsd-build.yml'
+  schedule:
+    - cron: '42 8 * * *'
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    name: Test rsync on NetBSD
+    steps:
+    - uses: actions/checkout@v4
+      with:
+        fetch-depth: 0
+    - name: Test in NetBSD VM
+      id: test
+      uses: vmactions/netbsd-vm@v1
+      with:
+        usesh: true
+        prepare: |
+          PATH=/usr/sbin:$PATH pkg_add autoconf automake python312
+          ln -sf /usr/pkg/bin/python3.12 /usr/pkg/bin/python3
+        run: |
+          uname -a
+          ./configure --with-rrsync --disable-zstd --disable-md2man --disable-xxhash --disable-lz4
+          make
+          ./rsync --version
+          make check
+          ./rsync-ssl --no-motd download.samba.org::rsyncftp/ || true
+    - name: save artifact
+      uses: actions/upload-artifact@v4
+      with:
+        name: netbsd-bin
+        path: |
+          rsync
+          rsync-ssl
+          rsync.1
+          rsync-ssl.1
+          rsyncd.conf.5
+          rrsync.1
+          rrsync

.github/workflows/openbsd-build.yml

@@ -0,0 +1,52 @@
+name: Test rsync on OpenBSD
+
+on:
+  push:
+    branches: [ master ]
+    paths-ignore:
+      - '.github/workflows/*.yml'
+      - '!.github/workflows/openbsd-build.yml'
+  pull_request:
+    branches: [ master ]
+    paths-ignore:
+      - '.github/workflows/*.yml'
+      - '!.github/workflows/openbsd-build.yml'
+  schedule:
+    - cron: '42 8 * * *'
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    name: Test rsync on OpenBSD
+    steps:
+    - uses: actions/checkout@v4
+      with:
+        fetch-depth: 0
+    - name: Test in OpenBSD VM
+      id: test
+      uses: vmactions/openbsd-vm@v1
+      with:
+        usesh: true
+        prepare: |
+          pkg_add -I bash autoconf%2.71 automake%1.16
+        run: |
+          uname -a
+          export AUTOCONF_VERSION=2.71
+          export AUTOMAKE_VERSION=1.16
+          ./configure --with-rrsync --disable-zstd --disable-md2man --disable-xxhash --disable-lz4
+          make
+          ./rsync --version
+          make check
+          ./rsync-ssl --no-motd download.samba.org::rsyncftp/ || true
+    - name: save artifact
+      uses: actions/upload-artifact@v4
+      with:
+        name: openbsd-bin
+        path: |
+          rsync
+          rsync-ssl
+          rsync.1
+          rsync-ssl.1
+          rsyncd.conf.5
+          rrsync.1
+          rrsync

.github/workflows/solaris-build.yml

@@ -0,0 +1,49 @@
+name: Test rsync on Solaris
+
+on:
+  push:
+    branches: [ master ]
+    paths-ignore:
+      - '.github/workflows/*.yml'
+      - '!.github/workflows/solaris-build.yml'
+  pull_request:
+    paths-ignore:
+      - '.github/workflows/*.yml'
+      - '!.github/workflows/solaris-build.yml'
+  schedule:
+    - cron: '42 8 * * *'
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    name: Test rsync on Solaris
+    steps:
+    - uses: actions/checkout@v4
+      with:
+        fetch-depth: 0
+    - name: Test in Solaris VM
+      id: test
+      uses: vmactions/solaris-vm@v1
+      with:
+        usesh: true
+        prepare: |
+          pkg install bash automake gnu-m4 pkg://solaris/runtime/python-35 autoconf gcc git
+        run: |
+          uname -a
+          ./configure --with-rrsync -disable-zstd --disable-md2man --disable-xxhash --disable-lz4
+          make
+          ./rsync --version
+          make check
+          ./rsync-ssl --no-motd download.samba.org::rsyncftp/ || true
+    - name: save artifact
+      uses: actions/upload-artifact@v4
+      with:
+        name: solaris-bin
+        path: |
+          rsync
+          rsync-ssl
+          rsync.1
+          rsync-ssl.1
+          rsyncd.conf.5
+          rrsync.1
+          rrsync

.github/workflows/ubuntu-22.04-build.yml

@@ -0,0 +1,59 @@
+name: Test rsync on Ubuntu 22.04
+
+# Older-LTS coverage to help with backporting security fixes. ubuntu-22.04
+# is currently the oldest GitHub Actions runner image (20.04 was retired
+# in April 2025).
+
+on:
+  push:
+    branches: [ master ]
+    paths-ignore:
+      - '.github/workflows/*.yml'
+      - '!.github/workflows/ubuntu-22.04-build.yml'
+  pull_request:
+    paths-ignore:
+      - '.github/workflows/*.yml'
+      - '!.github/workflows/ubuntu-22.04-build.yml'
+  schedule:
+    - cron: '42 8 * * *'
+
+jobs:
+  test:
+    runs-on: ubuntu-22.04
+    name: Test rsync on Ubuntu 22.04
+    steps:
+    - uses: actions/checkout@v4
+      with:
+        fetch-depth: 0
+    - name: prep
+      run: |
+        sudo apt-get install acl libacl1-dev attr libattr1-dev liblz4-dev libzstd-dev libxxhash-dev python3-cmarkgfm openssl
+        echo "/usr/local/bin" >>$GITHUB_PATH
+    - name: configure
+      run: ./configure --with-rrsync
+    - name: make
+      run: make
+    - name: install
+      run: sudo make install
+    - name: info
+      run: rsync --version
+    - name: check
+      run: sudo RSYNC_EXPECT_SKIPPED=crtimes make check
+    - name: check30
+      run: sudo RSYNC_EXPECT_SKIPPED=crtimes make check30
+    - name: check29
+      run: sudo RSYNC_EXPECT_SKIPPED=crtimes make check29
+    - name: ssl file list
+      run: rsync-ssl --no-motd download.samba.org::rsyncftp/ || true
+    - name: save artifact
+      uses: actions/upload-artifact@v4
+      with:
+        name: ubuntu-22.04-bin
+        path: |
+          rsync
+          rsync-ssl
+          rsync.1
+          rsync-ssl.1
+          rsyncd.conf.5
+          rrsync.1
+          rrsync

.github/workflows/ubuntu-build.yml

@@ -0,0 +1,55 @@
+name: Test rsync on Ubuntu
+
+on:
+  push:
+    branches: [ master ]
+    paths-ignore:
+      - '.github/workflows/*.yml'
+      - '!.github/workflows/ubuntu-build.yml'
+  pull_request:
+    paths-ignore:
+      - '.github/workflows/*.yml'
+      - '!.github/workflows/ubuntu-build.yml'
+  schedule:
+    - cron: '42 8 * * *'
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    name: Test rsync on Ubuntu
+    steps:
+    - uses: actions/checkout@v4
+      with:
+        fetch-depth: 0
+    - name: prep
+      run: |
+        sudo apt-get install acl libacl1-dev attr libattr1-dev liblz4-dev libzstd-dev libxxhash-dev python3-cmarkgfm openssl
+        echo "/usr/local/bin" >>$GITHUB_PATH
+    - name: configure
+      run: ./configure --with-rrsync
+    - name: make
+      run: make
+    - name: install
+      run: sudo make install
+    - name: info
+      run: rsync --version
+    - name: check
+      run: sudo RSYNC_EXPECT_SKIPPED=crtimes make check
+    - name: check30
+      run: sudo RSYNC_EXPECT_SKIPPED=crtimes make check30
+    - name: check29
+      run: sudo RSYNC_EXPECT_SKIPPED=crtimes make check29
+    - name: ssl file list
+      run: rsync-ssl --no-motd download.samba.org::rsyncftp/ || true
+    - name: save artifact
+      uses: actions/upload-artifact@v4
+      with:
+        name: ubuntu-bin
+        path: |
+          rsync
+          rsync-ssl
+          rsync.1
+          rsync-ssl.1
+          rsyncd.conf.5
+          rrsync.1
+          rrsync

INSTALL.md

@@ -104,6 +104,8 @@ like.
     >     sudo apt install -y liblz4-dev
     >     sudo apt install -y libssl-dev
 
+Or run support/install_deps_ubuntu.sh
+
  -  For CentOS (use EPEL for python3-pip):
 
     >     sudo yum -y install epel-release
@@ -230,6 +232,9 @@ not completely implement the "New Sockets" API.
 [This site][5] says that Apple started to support IPv6 in 10.2 (Jaguar).  If
 your build fails, try again after running configure with `--disable-ipv6`.
 
+Apple Silicon macs may install packages in a slightly different location and require flags.
+CFLAGS="-I /opt/homebrew/include" LDFLAGS="-L /opt/homebrew/lib"
+
 [5]: http://www.ipv6.org/impl/mac.html
 
 ## IBM AIX notes

Makefile.in

@@ -50,19 +50,20 @@ OBJS2=options.o io.o compat.o hlink.o token.o uidlist.o socket.o hashtable.o \
 OBJS3=progress.o pipe.o @MD5_ASM@ @ROLL_SIMD@ @ROLL_ASM@
 DAEMON_OBJ = params.o loadparm.o clientserver.o access.o connection.o authenticate.o
 popt_OBJS=popt/findme.o  popt/popt.o  popt/poptconfig.o \
-	popt/popthelp.o popt/poptparse.o
+	popt/popthelp.o popt/poptparse.o popt/poptint.o
 OBJS=$(OBJS1) $(OBJS2) $(OBJS3) $(DAEMON_OBJ) $(LIBOBJ) @BUILD_ZLIB@ @BUILD_POPT@
 
 TLS_OBJ = tls.o syscall.o util2.o t_stub.o lib/compat.o lib/snprintf.o lib/permstring.o lib/sysxattrs.o @BUILD_POPT@
 
 # Programs we must have to run the test cases
 CHECK_PROGS = rsync$(EXEEXT) tls$(EXEEXT) getgroups$(EXEEXT) getfsdev$(EXEEXT) \
-	testrun$(EXEEXT) trimslash$(EXEEXT) t_unsafe$(EXEEXT) wildtest$(EXEEXT)
+	testrun$(EXEEXT) trimslash$(EXEEXT) t_unsafe$(EXEEXT) t_chmod_secure$(EXEEXT) \
+	t_secure_relpath$(EXEEXT) wildtest$(EXEEXT) simdtest$(EXEEXT)
 
 CHECK_SYMLINKS = testsuite/chown-fake.test testsuite/devices-fake.test testsuite/xattrs-hlink.test
 
 # Objects for CHECK_PROGS to clean
-CHECK_OBJS=tls.o testrun.o getgroups.o getfsdev.o t_stub.o t_unsafe.o trimslash.o wildtest.o
+CHECK_OBJS=tls.o testrun.o getgroups.o getfsdev.o t_stub.o t_unsafe.o t_chmod_secure.o t_secure_relpath.o trimslash.o wildtest.o
 
 # note that the -I. is needed to handle config.h when using VPATH
 .c.o:
@@ -70,6 +71,8 @@ CHECK_OBJS=tls.o testrun.o getgroups.o getfsdev.o t_stub.o t_unsafe.o trimslash.
 	$(CC) -I. -I$(srcdir) $(CFLAGS) $(CPPFLAGS) -c $< @CC_SHOBJ_FLAG@
 @OBJ_RESTORE@
 
+# NOTE: consider running "packaging/smart-make" instead of "make" to auto-handle
+# any changes to configure.sh and the main Makefile prior to a "make all".
 all: Makefile rsync$(EXEEXT) stunnel-rsyncd.conf @MAKE_RRSYNC@ @MAKE_MAN@
 .PHONY: all
 
@@ -176,20 +179,20 @@ T_UNSAFE_OBJ = t_unsafe.o syscall.o util1.o util2.o t_stub.o lib/compat.o lib/sn
 t_unsafe$(EXEEXT): $(T_UNSAFE_OBJ)
 	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $(T_UNSAFE_OBJ) $(LIBS)
 
+T_CHMOD_SECURE_OBJ = t_chmod_secure.o syscall.o util1.o util2.o t_stub.o lib/compat.o lib/snprintf.o lib/wildmatch.o lib/permstring.o
+t_chmod_secure$(EXEEXT): $(T_CHMOD_SECURE_OBJ)
+	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $(T_CHMOD_SECURE_OBJ) $(LIBS)
+
+T_SECURE_RELPATH_OBJ = t_secure_relpath.o syscall.o util1.o util2.o t_stub.o lib/compat.o lib/snprintf.o lib/wildmatch.o lib/permstring.o
+t_secure_relpath$(EXEEXT): $(T_SECURE_RELPATH_OBJ)
+	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $(T_SECURE_RELPATH_OBJ) $(LIBS)
+
 .PHONY: conf
 conf: configure.sh config.h.in
 
 .PHONY: gen
 gen: conf proto.h man git-version.h
 
-.PHONY: gensend
-gensend: gen
-	if ! diff git-version.h $(srcdir)/gists/rsync-git-version.h >/dev/null; then \
-	    ./rsync -ai git-version.h $(srcdir)/gists/rsync-git-version.h && \
-	    (cd $(srcdir)/gists && git commit --allow-empty-message -m '' rsync-git-version.h && git push) ; \
-	fi
-	rsync -aic $(GENFILES) git-version.h $${SAMBA_HOST-samba.org}:/home/ftp/pub/rsync/generated-files/ || true
-
 aclocal.m4: $(srcdir)/m4/*.m4
 	aclocal -I $(srcdir)/m4
 
@@ -332,6 +335,14 @@ wildtest.o: wildtest.c t_stub.o lib/wildmatch.c rsync.h config.h
 wildtest$(EXEEXT): wildtest.o lib/compat.o lib/snprintf.o @BUILD_POPT@
 	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ wildtest.o lib/compat.o lib/snprintf.o @BUILD_POPT@ $(LIBS)
 
+simdtest$(EXEEXT): simd-checksum-x86_64.cpp $(HEADERS)
+	@if test x"@ROLL_SIMD@" != x; then \
+	    $(CXX) -I. $(CXXFLAGS) $(CPPFLAGS) $(LDFLAGS) -DTEST_SIMD_CHECKSUM1 \
+	        -o $@ $(srcdir)/simd-checksum-x86_64.cpp @ROLL_ASM@ $(LIBS); \
+	else \
+	    touch $@; \
+	fi
+
 testsuite/chown-fake.test:
 	ln -s chown.test $(srcdir)/testsuite/chown-fake.test
 
@@ -364,4 +375,4 @@ doxygen:
 .PHONY: doxygen-upload
 doxygen-upload:
 	rsync -avzv $(srcdir)/dox/html/ --delete \
-	$${SAMBA_HOST-samba.org}:/home/httpd/html/rsync/doxygen/head/
+	$${RSYNC_SAMBA_HOST-samba.org}:/home/httpd/html/rsync/doxygen/head/

NEWS.md

@@ -1,4 +1,144 @@
-# NEWS for rsync 3.2.7 (UNRELEASED)
+# NEWS for rsync 3.4.1 (16 Jan 2025)
+
+Release 3.4.1 is a fix for regressions introduced in 3.4.0
+
+## Changes in this version:
+
+### BUG FIXES:
+
+ - fixed handling of -H flag with conflict in internal flag values
+
+ - fixed a user after free in logging of failed rename
+
+ - fixed build on systems without openat()
+
+ - removed dependency on alloca() in bundled popt
+
+### DEVELOPER RELATED:
+
+ - fix to permissions handling in the developer release script
+
+------------------------------------------------------------------------------
+# NEWS for rsync 3.4.0 (15 Jan 2025)
+
+Release 3.4.0 is a security release that fixes a number of important vulnerabilities.
+
+For more details on the vulnerabilities please see the CERT report
+https://kb.cert.org/vuls/id/952657
+
+## Changes in this version:
+
+### PROTOCOL NUMBER:
+
+ - The protocol number was changed to 32 to make it easier for
+   administrators to check their servers have been updated
+
+### SECURITY FIXES:
+
+Many thanks to Simon Scannell, Pedro Gallegos, and Jasiel Spelman at
+Google Cloud Vulnerability Research and Aleksei Gorban (Loqpa) for
+discovering these vulnerabilities and working with the rsync project
+to develop and test fixes.
+
+- CVE-2024-12084 - Heap Buffer Overflow in Checksum Parsing.
+
+- CVE-2024-12085 - Info Leak via uninitialized Stack contents defeats ASLR.
+  
+- CVE-2024-12086 - Server leaks arbitrary client files.
+
+- CVE-2024-12087 - Server can make client write files outside of destination directory using symbolic links.
+
+- CVE-2024-12088 - --safe-links Bypass.
+
+- CVE-2024-12747 - symlink race condition.
+
+### BUG FIXES:
+
+- Fixed the included popt to avoid a memory error on modern gcc versions.
+
+- Fixed an incorrect extern variable's type that caused an ACL issue on macOS.
+
+- Fixed IPv6 configure check
+
+### INTERNAL:
+
+- Updated included popt to version 1.19.
+
+### DEVELOPER RELATED:
+
+- Various improvements to the release scripts and git setup.
+
+- Improved packaging/var-checker to identify variable type issues.
+
+- added FreeBSD and Solaris CI builds
+
+------------------------------------------------------------------------------
+# NEWS for rsync 3.3.0 (6 Apr 2024)
+
+## Changes in this version:
+
+### BUG FIXES:
+
+- Fixed a bug with `--sparse --inplace` where a trailing gap in the source
+  file would not clear out the trailing data in the destination file.
+
+- Fixed an buffer overflow in the checksum2 code if SHA1 is being used for
+  the checksum2 algorithm.
+
+- Fixed an issue when rsync is compiled using `_FORTIFY_SOURCE` so that the
+  extra tests don't complain about a strlcpy() limit value (which was too
+  large, even though it wasn't possible for the larger value to cause an
+  overflow).
+
+- Add a backtick to the list of characters that the filename quoting needs to
+  escape using backslashes.
+
+- Fixed a string-comparison issue in the internal handling of `--progress` (a
+  locale such as tr_TR.utf-8 needed the internal triggering of `--info` options
+  to use upper-case flag names to ensure that they match).
+
+- Make sure that a local transfer marks the sender side as trusted.
+
+- Change the argv handling to work with a newer popt library -- one that likes
+  to free more data than it used to.
+
+- Rsync now calls `OpenSSL_add_all_algorithms()` when compiled against an older
+  openssl library.
+
+- Fixed a problem in the daemon auth for older protocols (29 and before) if the
+  openssl library is being used to compute MD4 checksums.
+
+- Fixed `rsync -VV` on Cygwin -- it needed a flush of stdout.
+
+- Fixed an old stats bug that counted devices as symlinks.
+
+### ENHANCEMENTS:
+
+- Enhanced rrsync with the `-no-overwrite` option that allows you to ensure
+  that existing files on your restricted but writable directory can't be
+  modified.
+
+- Enhanced the manpages to mark links with .UR & .UE. If your nroff doesn't
+  support these idioms, touch the file `.md2man-force` in the source directory
+  so that `md-convert` gets called with the `--force-link-text` option, and
+  that should ensure that your manpages are still readable even with the
+  ignored markup.
+
+- Some manpage improvements on the handling of [global] modules.
+
+- Changed the mapfrom & mapto perl scripts (in the support dir) into a single
+  python script named idmap.  Converted a couple more perl scripts into python.
+
+- Changed the mnt-excl perl script (in the support dir) into a python script.
+
+### DEVELOPER RELATED:
+
+ - Updated config.guess (timestamp 2023-01-01) and config.sub (timestamp
+   2023-01-21).
+
+------------------------------------------------------------------------------
+
+# NEWS for rsync 3.2.7 (20 Oct 2022)
 
 ## Changes in this version:
 
@@ -25,31 +165,46 @@
 - Added support for the SHA1 digest in file checksums.  While this tends to be
   overkill, it is available if someone really needs it.  This overly-long
   checksum is at the lowest priority in the normal checksum negotiation list.
-  See `--checksum-choice` (`--cc`) and the `RSYNC_CHECKSUM_LIST` environment
-  var for how to customize this.
+  See [`--checksum-choice`](rsync.1#opt) (`--cc`) and the `RSYNC_CHECKSUM_LIST`
+  environment var for how to customize this.
 
 - Improved the xattr hash table to use a 64-bit key without slowing down the
-  key's computation.  This should make extra sure that a collision doesn't
+  key's computation.  This should make extra sure that a hash collision doesn't
   happen.
 
 - If the `--version` option is repeated (e.g. `-VV`) then the information is
-  output in a (still fairly readable) JSON format.  Client side only.
+  output in a (still readable) JSON format.  Client side only.
 
 - The script `support/json-rsync-version` is available to get the JSON style
   version output from any rsync.  The script accepts either text on stdin
   **or** an arg that specifies an rsync executable to run with a doubled
   `--version` option.  If the text we get isn't already in JSON format, it is
   converted. Newer rsync versions will provide more complete json info than
-  older rsync versions.
+  older rsync versions. Various tweaks are made to keep the flag names
+  consistent across versions.
 
-- The [`use chroot`](rsyncd.conf.5#use_chroot) daemon parameter now defaults to
-  "unset" so that rsync can use chroot when it works and a sanitized copy when
-  chroot is not supported (e.g., for a non-root daemon).  Explicitly setting
-  the parameter to true or false (on or off) behaves the same way as before.
+- The [`use chroot`](rsyncd.conf.5#) daemon parameter now defaults to "unset"
+  so that rsync can use chroot when it works and a sanitized copy when chroot
+  is not supported (e.g., for a non-root daemon).  Explicitly setting the
+  parameter to true or false (on or off) behaves the same way as before.
 
 - The `--fuzzy` option was optimized a bit to try to cut down on the amount of
   computations when considering a big pool of files. The simple heuristic from
-  Kenneth Finnegan resuled in about a 2x speedup.
+  Kenneth Finnegan resulted in about a 2x speedup.
+
+- If rsync is forced to use protocol 29 or before (perhaps due to talking to an
+  rsync before 3.0.0), the modify time of a file is limited to 4-bytes.  Rsync
+  now interprets this value as an unsigned integer so that a current year past
+  2038 can continue to be represented. This does mean that years prior to 1970
+  cannot be represented in an older protocol, but this trade-off seems like the
+  right choice given that (1) 2038 is very rapidly approaching, and (2) newer
+  protocols support a much wider range of old and new dates.
+
+- The rsync client now treats an empty destination arg as an error, just like
+  it does for an empty source arg. This doesn't affect a `host:` arg (which is
+  treated the same as `host:.`) since the arg is not completely empty.  The use
+  of [`--old-args`](rsync.1#opt) (including via `RSYNC_OLD_ARGS`) allows the
+  prior behavior of treating an empty destination arg as a ".".
 
 ### PACKAGING RELATED:
 
@@ -57,7 +212,7 @@
   deprecation warnings and makes it easy to support more digest methods.  On
   newer systems, the MD4 digest is marked as legacy in the openssl code, which
   makes openssl refuse to support it via EVP.  You can choose to ignore this
-  and allow the included MD4 code to be used for older rsync connections (when
+  and allow rsync's MD4 code to be used for older rsync connections (when
   talking to an rsync prior to 3.0.0) or you can choose to configure rsync to
   tell openssl to enable legacy algorithms (see below).
 
@@ -202,9 +357,10 @@
  - A new form of arg protection was added that works similarly to the older
    `--protect-args` ([`-s`](rsync.1#opt)) option but in a way that avoids
    breaking things like rrsync (the restricted rsync script): rsync now uses
-   backslash escaping for sending "shell-active" characters to the remote
-   shell. This includes spaces, so fetching a remote file via a simple quoted
-   filename value now works by default without any extra quoting:
+   backslash escaping for sending "shell-active" characters to the remote shell
+   (such as `$(){}<>#&` and others). This includes spaces, so fetching a remote
+   file via a quoted filename value now works by default without any extra
+   quoting:
 
    ```shell
        rsync -aiv host:'a simple file.pdf' .
@@ -212,10 +368,14 @@
 
    Wildcards are not escaped in filename args, but they are escaped in options
    like the [`--suffix`](rsync.1#opt) and [`--usermap`](rsync.1#opt) values.
-   If your rsync script depends on the old arg-splitting behavior, either run
-   it with the [`--old-args`](rsync.1#opt) option or `export RSYNC_OLD_ARGS=1`
-   in the script's environment.  See also the [ADVANCED USAGE](rsync.1#)
-   section of rsync's manpage for how to use a more modern arg style.
+
+   If a script depends on the old arg behavior (perhaps because it quotes or
+   protects the args already, or perhaps because it expects arg splitting),
+   there are two easy ways to get things going with a modern rsync: either
+   `export RSYNC_OLD_ARGS=1` in the script's environment (perhaps in the script
+   itself) or add the option [`--old-args`](rsync.1#opt) to the rsync commands
+   that are run.  See also the [ADVANCED USAGE](rsync.1#) section of rsync's
+   manpage for how to use a more modern arg style.
 
  - A long-standing bug was preventing rsync from figuring out the current
    locale's decimal point character, which made rsync always output numbers
@@ -4677,7 +4837,10 @@
 
 | RELEASE DATE | VER.   | DATE OF COMMIT\* | PROTOCOL    |
 |--------------|--------|------------------|-------------|
-| ?? Dec 2022  | 3.2.7  |                  | 31          |
+| 16 Jan 2025  | 3.4.1  |                  | 32          |
+| 15 Jan 2025  | 3.4.0  |                  | 32          |
+| 06 Apr 2024  | 3.3.0  |                  | 31          |
+| 20 Oct 2022  | 3.2.7  |                  | 31          |
 | 09 Sep 2022  | 3.2.6  |                  | 31          |
 | 14 Aug 2022  | 3.2.5  |                  | 31          |
 | 15 Apr 2022  | 3.2.4  |                  | 31          |

README.md

@@ -34,7 +34,7 @@ If you need to build rsync yourself, check out the [INSTALL][1] page for
 information on what libraries and packages you can use to get the maximum
 features in your build.
 
-[1]: https://github.com/WayneD/rsync/blob/master/INSTALL.md
+[1]: https://github.com/RsyncProject/rsync/blob/master/INSTALL.md
 
 SETUP
 -----
@@ -112,6 +112,7 @@ page of the web site.
 
 Alternately, email your bug report to <rsync@lists.samba.org>.
 
+For security issues please email details of the issue to <rsync.project@gmail.com>.
 
 GIT REPOSITORY
 --------------
@@ -120,7 +121,7 @@ If you want to get the very latest version of rsync direct from the
 source code repository, then you will need to use git.  The git repo
 is hosted [on GitHub][6] and [on Samba's site][7].
 
-[6]: https://github.com/WayneD/rsync
+[6]: https://github.com/RsyncProject/rsync
 [7]: https://git.samba.org/?p=rsync.git;a=summary
 
 See [the download page][8] for full details on all the ways to grab the
@@ -132,13 +133,12 @@ source.
 COPYRIGHT
 ---------
 
-Rsync was originally written by Andrew Tridgell and is currently
-maintained by Wayne Davison.  It has been improved by many developers
-from around the world.
+Rsync was originally written by Andrew Tridgell and Paul Mackerras.  Many
+people from around the world have helped to maintain and improve it.
 
 Rsync may be used, modified and redistributed only under the terms of
 the GNU General Public License, found in the file [COPYING][9] in this
 distribution, or at [the Free Software Foundation][10].
 
-[9]: https://github.com/WayneD/rsync/blob/master/COPYING
+[9]: https://github.com/RsyncProject/rsync/blob/master/COPYING
 [10]: https://www.fsf.org/licenses/gpl.html

SECURITY.md

@@ -9,4 +9,5 @@ help backporting fixes into an older release, feel free to ask.
 
 Email your vulnerability information to rsync's maintainer:
 
-  Wayne Davison <wayne@opencoder.net>
+  Rsync Project <rsync.project@gmail.com>
+

access.c

@@ -99,7 +99,7 @@ static void make_mask(char *mask, int plen, int addrlen)
 	return;
 }
 
-static int match_address(const char *addr, const char *tok)
+static int match_address(const char *addr, char *tok)
 {
 	char *p;
 	struct addrinfo hints, *resa, *rest;

acls.c

@@ -28,7 +28,7 @@ extern int dry_run;
 extern int am_root;
 extern int read_only;
 extern int list_only;
-extern int orig_umask;
+extern mode_t orig_umask;
 extern int numeric_ids;
 extern int inc_recurse;
 extern int preserve_devices;
@@ -697,7 +697,7 @@ static uint32 recv_acl_access(int f, uchar *name_follows_ptr)
 static uchar recv_ida_entries(int f, ida_entries *ent)
 {
 	uchar computed_mask_bits = 0;
-	int i, count = read_varint(f);
+	int i, count = read_varint_bounded(f, 0, MAX_WIRE_ACL_COUNT, "ACL count");
 
 	ent->idas = count ? new_array(id_access, count) : NULL;
 	ent->count = count;
@@ -713,7 +713,7 @@ static uchar recv_ida_entries(int f, ida_entries *ent)
 			else
 				id = recv_group_name(f, id, NULL);
 		} else if (access & NAME_IS_USER) {
-			if (inc_recurse && am_root && !numeric_ids)
+			if (inc_recurse && !numeric_ids)
 				id = match_uid(id);
 		} else {
 			if (inc_recurse && (!am_root || !numeric_ids))
@@ -765,6 +765,7 @@ static int recv_rsync_acl(int f, item_list *racl_list, SMB_ACL_TYPE_T type, mode
 	/* If we received a superfluous mask, throw it away. */
 	duo_item->racl.mask_obj = NO_ENTRY;
 	(void)mode;
+	(void)computed_mask_bits;
 #else
 	if (duo_item->racl.names.count && duo_item->racl.mask_obj == NO_ENTRY) {
 		/* Mask must be non-empty with lists. */
@@ -981,7 +982,7 @@ static int set_rsync_acl(const char *fname, acl_duo *duo_item,
 		 && !pack_smb_acl(&duo_item->sacl, &duo_item->racl))
 			return -1;
 #ifdef HAVE_OSX_ACLS
-		mode = 0; /* eliminate compiler warning */
+		(void)mode; /* eliminate compiler warning */
 #else
 		if (type == SMB_ACL_TYPE_ACCESS) {
 			cur_mode = change_sacl_perms(duo_item->sacl, &duo_item->racl, cur_mode, mode);

backup.c

@@ -39,7 +39,7 @@ static int validate_backup_dir(void)
 {
 	STRUCT_STAT st;
 
-	if (do_lstat(backup_dir_buf, &st) < 0) {
+	if (do_lstat_at(backup_dir_buf, &st) < 0) {
 		if (errno == ENOENT)
 			return 0;
 		rsyserr(FERROR, errno, "backup lstat %s failed", backup_dir_buf);
@@ -98,7 +98,7 @@ static BOOL copy_valid_path(const char *fname)
 	for ( ; b; name = b + 1, b = strchr(name, '/')) {
 		*b = '\0';
 
-		while (do_mkdir(backup_dir_buf, ACCESSPERMS) < 0) {
+		while (do_mkdir_at(backup_dir_buf, ACCESSPERMS) < 0) {
 			if (errno == EEXIST) {
 				val = validate_backup_dir();
 				if (val > 0)
@@ -197,7 +197,7 @@ static inline int link_or_rename(const char *from, const char *to,
 		if (IS_SPECIAL(stp->st_mode) || IS_DEVICE(stp->st_mode))
 			return 0; /* Use copy code. */
 #endif
-		if (do_link(from, to) == 0) {
+		if (do_link_at(from, to) == 0) {
 			if (DEBUG_GTE(BACKUP, 1))
 				rprintf(FINFO, "make_backup: HLINK %s successful.\n", from);
 			return 2;
@@ -207,7 +207,7 @@ static inline int link_or_rename(const char *from, const char *to,
 			return 0;
 	}
 #endif
-	if (do_rename(from, to) == 0) {
+	if (do_rename_at(from, to) == 0) {
 		if (stp->st_nlink > 1 && !S_ISDIR(stp->st_mode)) {
 			/* If someone has hard-linked the file into the backup
 			 * dir, rename() might return success but do nothing! */
@@ -246,7 +246,7 @@ int make_backup(const char *fname, BOOL prefer_rename)
 		goto success;
 	if (errno == EEXIST || errno == EISDIR) {
 		STRUCT_STAT bakst;
-		if (do_lstat(buf, &bakst) == 0) {
+		if (do_lstat_at(buf, &bakst) == 0) {
 			int flags = get_del_for_flag(bakst.st_mode) | DEL_FOR_BACKUP | DEL_RECURSE;
 			if (delete_item(buf, bakst.st_mode, flags) != 0)
 				return 0;
@@ -277,7 +277,7 @@ int make_backup(const char *fname, BOOL prefer_rename)
 	/* Check to see if this is a device file, or link */
 	if ((am_root && preserve_devices && IS_DEVICE(file->mode))
 	 || (preserve_specials && IS_SPECIAL(file->mode))) {
-		if (do_mknod(buf, file->mode, sx.st.st_rdev) < 0)
+		if (do_mknod_at(buf, file->mode, sx.st.st_rdev) < 0)
 			rsyserr(FERROR, errno, "mknod %s failed", full_fname(buf));
 		else if (DEBUG_GTE(BACKUP, 1))
 			rprintf(FINFO, "make_backup: DEVICE %s successful.\n", fname);
@@ -294,7 +294,7 @@ int make_backup(const char *fname, BOOL prefer_rename)
 			}
 			ret = 2;
 		} else {
-			if (do_symlink(sl, buf) < 0)
+			if (do_symlink_at(sl, buf) < 0)
 				rsyserr(FERROR, errno, "link %s -> \"%s\"", full_fname(buf), sl);
 			else if (DEBUG_GTE(BACKUP, 1))
 				rprintf(FINFO, "make_backup: SYMLINK %s successful.\n", fname);

checksum.c

@@ -3,7 +3,7 @@
  *
  * Copyright (C) 1996 Andrew Tridgell
  * Copyright (C) 1996 Paul Mackerras
- * Copyright (C) 2004-2022 Wayne Davison
+ * Copyright (C) 2004-2023 Wayne Davison
  *
  * 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
@@ -154,7 +154,7 @@ static const EVP_MD *csum_evp_md(struct name_num_item *nni)
 		emd = NULL;
 	else
 #endif
-		emd = EVP_get_digestbyname(nni->name);                                               
+		emd = EVP_get_digestbyname(nni->name);
 	if (emd && !(nni->flags & NNI_EVP_OK)) { /* Make sure it works before we advertise it */
 		if (!ctx_evp && !(ctx_evp = EVP_MD_CTX_create()))
 			out_of_memory("csum_evp_md");
@@ -176,7 +176,7 @@ void parse_checksum_choice(int final_call)
 	if (valid_checksums.negotiated_nni)
 		xfer_sum_nni = file_sum_nni = valid_checksums.negotiated_nni;
 	else {
-		char *cp = checksum_choice ? strchr(checksum_choice, ',') : NULL;
+		const char *cp = checksum_choice ? strchr(checksum_choice, ',') : NULL;
 		if (cp) {
 			xfer_sum_nni = parse_csum_name(checksum_choice, cp - checksum_choice);
 			file_sum_nni = parse_csum_name(cp+1, -1);
@@ -300,6 +300,7 @@ uint32 get_checksum1(char *buf1, int32 len)
 }
 #endif
 
+/* The "sum" buffer must be at least MAX_DIGEST_LEN bytes! */
 void get_checksum2(char *buf, int32 len, char *sum)
 {
 #ifdef USE_OPENSSL
@@ -365,9 +366,8 @@ void get_checksum2(char *buf, int32 len, char *sum)
 
 		mdfour_begin(&m);
 
-		if (len > len1) {
-			if (buf1)
-				free(buf1);
+		if (len > len1 || !buf1) {
+			free(buf1);
 			buf1 = new_array(char, len+4);
 			len1 = len;
 		}
@@ -405,7 +405,7 @@ void file_checksum(const char *fname, const STRUCT_STAT *st_p, char *sum)
 	int32 remainder;
 	int fd;
 
-	fd = do_open(fname, O_RDONLY, 0);
+	fd = do_open_checklinks(fname);
 	if (fd == -1) {
 		memset(sum, 0, file_sum_len);
 		return;
@@ -787,6 +787,10 @@ void init_checksum_choices()
 	if (initialized_choices)
 		return;
 
+#if defined USE_OPENSSL && OPENSSL_VERSION_NUMBER < 0x10100000L
+	OpenSSL_add_all_algorithms();
+#endif
+
 #if defined SUPPORT_XXH3 || defined USE_OPENSSL
 	for (nni = valid_checksums.list; nni->name; nni++)
 		verify_digest(nni, True);

cleanup.c

@@ -198,7 +198,7 @@ NORETURN void _exit_cleanup(int code, const char *file, int line)
 		switch_step++;
 
 		if (cleanup_fname)
-			do_unlink(cleanup_fname);
+			do_unlink_at(cleanup_fname);
 		if (exit_code)
 			kill_all(SIGUSR1);
 		if (cleanup_pid && cleanup_pid == getpid()) {

clientname.c

@@ -167,7 +167,7 @@ int read_proxy_protocol_header(int fd)
 			char sig[PROXY_V2_SIG_SIZE];
 			char ver_cmd;
 			char fam;
-			char len[2];
+			unsigned char len[2];
 			union {
 				struct {
 					char src_addr[4];

clientserver.c

@@ -30,6 +30,7 @@ extern int list_only;
 extern int am_sender;
 extern int am_server;
 extern int am_daemon;
+extern int am_chrooted;
 extern int am_root;
 extern int msgs2stderr;
 extern int rsync_port;
@@ -38,6 +39,7 @@ extern int ignore_errors;
 extern int preserve_xattrs;
 extern int kluge_around_eof;
 extern int munge_symlinks;
+extern int use_secure_symlinks;
 extern int open_noatime;
 extern int sanitize_paths;
 extern int numeric_ids;
@@ -976,11 +978,14 @@ static int rsync_module(int f_in, int f_out, int i, const char *addr, const char
 	}
 
 	if (use_chroot) {
+		/* Cache timezone data before chroot makes /etc/localtime inaccessible */
+		tzset();
 		if (chroot(module_chdir)) {
 			rsyserr(FLOG, errno, "chroot(\"%s\") failed", module_chdir);
 			io_printf(f_out, "@ERROR: chroot failed\n");
 			return -1;
 		}
+		am_chrooted = 1;
 		module_chdir = module_dir;
 	}
 
@@ -1003,6 +1008,15 @@ static int rsync_module(int f_in, int f_out, int i, const char *addr, const char
 		}
 	}
 
+	/* Enable secure symlink handling for any non-chrooted daemon module.
+	 * This prevents TOCTOU race attacks where an attacker could switch a
+	 * directory to a symlink between path validation and file open.
+	 * Match the gate used by the do_*_at() wrappers in syscall.c
+	 * (am_daemon && !am_chrooted) -- the protection has nothing to do
+	 * with symlink munging, so a module configured with
+	 * "munge symlinks = false" must still get the secure-open path. */
+	use_secure_symlinks = am_daemon && !am_chrooted;
+
 	if (gid_list.count) {
 		gid_t *gid_array = gid_list.items;
 		if (setgid(gid_array[0])) {
@@ -1298,13 +1312,49 @@ int start_daemon(int f_in, int f_out)
 	if (lp_proxy_protocol() && !read_proxy_protocol_header(f_in))
 		return -1;
 
+	/* Do reverse DNS lookup before chroot/setuid. The result is cached,
+	 * so the later client_name() call will use this cached value. This
+	 * ensures hostname-based ACLs work even when DNS is unavailable
+	 * after chroot.
+	 *
+	 * "reverse lookup" can be set globally OR per-module, so we also
+	 * scan each module: a deployment with "reverse lookup = no" in the
+	 * global section but "reverse lookup = yes" in a specific module
+	 * still triggers a post-chroot lookup at access-check time
+	 * (rsync_module() in this file), which would also fail in the
+	 * chroot and turn hostname-based deny rules into silent bypasses. */
+	{
+		int need_reverse = lp_reverse_lookup(-1);
+		int j, num_modules = lp_num_modules();
+		for (j = 0; !need_reverse && j < num_modules; j++) {
+			if (lp_reverse_lookup(j))
+				need_reverse = 1;
+		}
+		if (need_reverse)
+			(void)client_name(client_addr(f_in));
+	}
+
 	p = lp_daemon_chroot();
 	if (*p) {
 		log_init(0); /* Make use we've initialized syslog before chrooting. */
+		tzset();
 		if (chroot(p) < 0) {
 			rsyserr(FLOG, errno, "daemon chroot(\"%s\") failed", p);
 			return -1;
 		}
+		/* Deliberately do NOT set am_chrooted here.  am_chrooted
+		 * gates the per-module symlink-race defenses
+		 * (secure_relative_open() and the do_*_at() wrappers in
+		 * syscall.c) and means "the kernel is enforcing path
+		 * confinement at the module boundary".  The daemon chroot
+		 * confines path resolution to the daemon-chroot directory,
+		 * not to any individual module path -- modules sharing the
+		 * daemon chroot are still distinguishable filesystem
+		 * subtrees and a sender-controlled symlink in module A
+		 * could redirect a syscall to module B (or to other files
+		 * inside the daemon chroot) without the per-module
+		 * defenses.  Leave am_chrooted=0 here so secure_relative_open()
+		 * still fires for "use chroot = no" modules. */
 		if (chdir("/") < 0) {
 			rsyserr(FLOG, errno, "daemon chdir(\"/\") failed");
 			return -1;

compat.c

@@ -131,7 +131,7 @@ static const char *client_info;
  * of that protocol for it to be advertised as available. */
 static void check_sub_protocol(void)
 {
-	char *dot;
+	const char *dot;
 	int their_protocol, their_sub;
 	int our_sub = get_subprotocol_version();
 
@@ -414,7 +414,7 @@ static const char *getenv_nstr(int ntype)
 		env_str = ntype == NSTR_COMPRESS ? "zlib" : protocol_version >= 30 ? "md5" : "md4";
 
 	if (am_server && env_str) {
-		char *cp = strchr(env_str, '&');
+		const char *cp = strchr(env_str, '&');
 		if (cp)
 			env_str = cp + 1;
 	}
@@ -834,6 +834,8 @@ void output_daemon_greeting(int f_out, int am_client)
 	char tmpbuf[MAX_NSTR_STRLEN];
 	int our_sub = get_subprotocol_version();
 
+	init_checksum_choices();
+
 	get_default_nno_list(&valid_auth_checksums, tmpbuf, MAX_NSTR_STRLEN, '\0');
 
 	io_printf(f_out, "@RSYNCD: %d.%d %s\n", protocol_version, our_sub, tmpbuf);
@@ -873,8 +875,10 @@ void negotiate_daemon_auth(int f_out, int am_client)
 		}
 	}
 	am_server = save_am_server;
-	if (md4_is_old && valid_auth_checksums.negotiated_nni->num == CSUM_MD4)
+	if (md4_is_old && valid_auth_checksums.negotiated_nni->num == CSUM_MD4) {
 		valid_auth_checksums.negotiated_nni->num = CSUM_MD4_OLD;
+		valid_auth_checksums.negotiated_nni->flags = 0;
+	}
 }
 
 int get_subprotocol_version()

configure.ac

@@ -4,7 +4,6 @@ AC_INIT([rsync],[ ],[https://rsync.samba.org/bug-tracking.html])
 
 AC_C_BIGENDIAN
 AC_HEADER_DIRENT
-AC_HEADER_TIME
 AC_HEADER_SYS_WAIT
 AC_CHECK_HEADERS(sys/fcntl.h sys/select.h fcntl.h sys/time.h sys/unistd.h \
     unistd.h utime.h compat.h sys/param.h ctype.h sys/wait.h sys/stat.h \
@@ -20,7 +19,7 @@ AC_HEADER_MAJOR_FIXED
 
 AC_CONFIG_MACRO_DIR([m4])
 AC_CONFIG_SRCDIR([byteorder.h])
-AC_CONFIG_HEADER(config.h)
+AC_CONFIG_HEADERS([config.h])
 AC_PREREQ([2.69])
 
 PACKAGE_VERSION=`sed -n 's/.*RSYNC_VERSION.*"\(.*\)".*/\1/p' <$srcdir/version.h`
@@ -61,7 +60,6 @@ AC_PROG_AWK
 AC_PROG_EGREP
 AC_PROG_INSTALL
 AC_PROG_MKDIR_P
-AC_PROG_CC_STDC
 AC_SUBST(SHELL)
 AC_PATH_PROG([PERL], [perl])
 AC_PATH_PROG([PYTHON3], [python3])
@@ -390,22 +388,22 @@ AS_HELP_STRING([--disable-ipv6],[disable to omit ipv6 support]),
 	;;
   esac ],
 
-  AC_TRY_RUN([ /* AF_INET6 availability check */
+  AC_RUN_IFELSE([AC_LANG_SOURCE([[ /* AF_INET6 availability check */
 #include <stdlib.h>
 #include <sys/types.h>
 #include <sys/socket.h>
-main()
+int main()
 {
    if (socket(AF_INET6, SOCK_STREAM, 0) < 0)
      exit(1);
    else
      exit(0);
 }
-],
-  AC_MSG_RESULT(yes)
-  AC_DEFINE(INET6, 1, [true if you have IPv6]),
-  AC_MSG_RESULT(no),
-  AC_MSG_RESULT(no)
+]])],
+  [AC_MSG_RESULT(yes)
+  AC_DEFINE(INET6, 1, true if you have IPv6)],
+  [AC_MSG_RESULT(no)],
+  [AC_MSG_RESULT(no)]
 ))
 
 dnl Do you want to disable use of locale functions
@@ -426,6 +424,26 @@ case $host_os in
 	       * ) AC_MSG_RESULT(no);;
 esac
 
+# We default to using our zlib unless --with-included-zlib=no is given.
+if test x"$with_included_zlib" != x"no"; then
+    with_included_zlib=yes
+elif test x"$ac_cv_header_zlib_h" != x"yes"; then
+    with_included_zlib=yes
+fi
+if test x"$with_included_zlib" != x"yes"; then
+    AC_CHECK_LIB(z, deflateParams, , [with_included_zlib=yes])
+fi
+
+AC_MSG_CHECKING([whether to use included zlib])
+if test x"$with_included_zlib" = x"yes"; then
+    AC_MSG_RESULT($srcdir/zlib)
+    BUILD_ZLIB='$(zlib_OBJS)'
+    CFLAGS="-I$srcdir/zlib $CFLAGS"
+else
+    AC_DEFINE(EXTERNAL_ZLIB, 1, [Define to 1 if using external zlib])
+    AC_MSG_RESULT(no)
+fi
+
 AC_MSG_CHECKING([whether to enable use of openssl crypto library])
 AC_ARG_ENABLE([openssl],
 	AS_HELP_STRING([--disable-openssl],[disable to omit openssl crypto library]))
@@ -434,10 +452,10 @@ AH_TEMPLATE([USE_OPENSSL],
 if test x"$enable_openssl" != x"no"; then
     if test x"$ac_cv_header_openssl_md4_h" = x"yes" && test x"$ac_cv_header_openssl_md5_h" = x"yes"; then
       AC_MSG_RESULT(yes)
-      AC_SEARCH_LIBS(MD5_Init, crypto,
+      AC_SEARCH_LIBS(EVP_MD_CTX_copy, crypto,
           [AC_DEFINE(USE_OPENSSL)
 	   enable_openssl=yes],
-          [err_msg="$err_msg$nl- Failed to find MD5_Init function in openssl crypto lib.";
+          [err_msg="$err_msg$nl- Failed to find EVP_MD_CTX_copy function in openssl crypto lib.";
 	   no_lib="$no_lib openssl"])
     else
         AC_MSG_RESULT(no)
@@ -528,7 +546,7 @@ fi
 
 AC_MSG_CHECKING([whether to enable zstd compression])
 AC_ARG_ENABLE([zstd],
-        AC_HELP_STRING([--disable-zstd], [disable to omit zstd compression]))
+        AS_HELP_STRING([--disable-zstd], [disable to omit zstd compression]))
 AH_TEMPLATE([SUPPORT_ZSTD],
 [Undefine if you do not want zstd compression.  By default this is defined.])
 if test x"$enable_zstd" != x"no"; then
@@ -549,7 +567,7 @@ fi
 
 AC_MSG_CHECKING([whether to enable LZ4 compression])
 AC_ARG_ENABLE([lz4],
-        AC_HELP_STRING([--disable-lz4], [disable to omit LZ4 compression]))
+        AS_HELP_STRING([--disable-lz4], [disable to omit LZ4 compression]))
 AH_TEMPLATE([SUPPORT_LZ4],
 [Undefine if you do not want LZ4 compression.  By default this is defined.])
 if test x"$enable_lz4" != x"no"; then
@@ -575,7 +593,7 @@ if test x"$no_lib" != x; then
     echo ""
     echo "See the INSTALL file for hints on how to install the missing libraries and/or"
     echo "how to generate (or fetch) manpages:"
-    echo "    https://github.com/WayneD/rsync/blob/master/INSTALL.md"
+    echo "    https://github.com/RsyncProject/rsync/blob/master/INSTALL.md"
     echo ""
     echo "To disable one or more features, the relevant configure options are:"
     for lib in $no_lib; do
@@ -872,7 +890,7 @@ AC_CHECK_FUNCS(waitpid wait4 getcwd chown chmod lchmod mknod mkfifo \
     fchmod fstat ftruncate strchr readlink link utime utimes lutimes strftime \
     chflags getattrlist mktime innetgr linkat \
     memmove lchown vsnprintf snprintf vasprintf asprintf setsid strpbrk \
-    strlcat strlcpy strtol mallinfo mallinfo2 getgroups setgroups geteuid getegid \
+    strlcat strlcpy stpcpy strtol mallinfo mallinfo2 getgroups setgroups geteuid getegid \
     setlocale setmode open64 lseek64 mkstemp64 mtrace va_copy __va_copy \
     seteuid strerror putenv iconv_open locale_charset nl_langinfo getxattr \
     extattr_get_link sigaction sigprocmask setattrlist getgrouplist \
@@ -1086,6 +1104,8 @@ if test x"$with_included_popt" = x"yes"; then
     AC_MSG_RESULT($srcdir/popt)
     BUILD_POPT='$(popt_OBJS)'
     CFLAGS="-I$srcdir/popt $CFLAGS"
+    AC_DEFINE(POPT_SYSCONFDIR, "/etc", [sysconfig dir for popt])
+    AC_DEFINE(PACKAGE, "rsync", [package name for rsync])
     if test x"$ALLOCA" != x
     then
 	# this can be removed when/if we add an included alloca.c;
@@ -1096,26 +1116,6 @@ else
     AC_MSG_RESULT(no)
 fi
 
-# We default to using our zlib unless --with-included-zlib=no is given.
-if test x"$with_included_zlib" != x"no"; then
-    with_included_zlib=yes
-elif test x"$ac_cv_header_zlib_h" != x"yes"; then
-    with_included_zlib=yes
-fi
-if test x"$with_included_zlib" != x"yes"; then
-    AC_CHECK_LIB(z, deflateParams, , [with_included_zlib=yes])
-fi
-
-AC_MSG_CHECKING([whether to use included zlib])
-if test x"$with_included_zlib" = x"yes"; then
-    AC_MSG_RESULT($srcdir/zlib)
-    BUILD_ZLIB='$(zlib_OBJS)'
-    CFLAGS="-I$srcdir/zlib $CFLAGS"
-else
-    AC_DEFINE(EXTERNAL_ZLIB, 1, [Define to 1 if using external zlib])
-    AC_MSG_RESULT(no)
-fi
-
 AC_CACHE_CHECK([for unsigned char],rsync_cv_SIGNED_CHAR_OK,[
 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[signed char *s = (signed char *)""]])],[rsync_cv_SIGNED_CHAR_OK=yes],[rsync_cv_SIGNED_CHAR_OK=no])])
 if test x"$rsync_cv_SIGNED_CHAR_OK" = x"yes"; then
@@ -1392,7 +1392,7 @@ else
 	AC_DEFINE(HAVE_LINUX_XATTRS, 1, [True if you have Linux xattrs (or equivalent)])
 	AC_DEFINE(SUPPORT_XATTRS, 1)
 	AC_DEFINE(NO_SYMLINK_USER_XATTRS, 1, [True if symlinks do not support user xattrs])
-	AC_CHECK_LIB(attr,getxattr)
+	AC_SEARCH_LIBS(getxattr,attr)
 	;;
     darwin*)
 	AC_MSG_RESULT(Using OS X xattrs)

delete.c

@@ -4,7 +4,7 @@
  * Copyright (C) 1996-2000 Andrew Tridgell
  * Copyright (C) 1996 Paul Mackerras
  * Copyright (C) 2002 Martin Pool <mbp@samba.org>
- * Copyright (C) 2003-2020 Wayne Davison
+ * Copyright (C) 2003-2024 Wayne Davison
  *
  * 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
@@ -98,7 +98,7 @@ static enum delret delete_dir_contents(char *fname, uint16 flags)
 
 		strlcpy(p, fp->basename, remainder);
 		if (!(fp->mode & S_IWUSR) && !am_root && fp->flags & FLAG_OWNED_BY_US)
-			do_chmod(fname, fp->mode | S_IWUSR);
+			do_chmod_at(fname, fp->mode | S_IWUSR);
 		/* Save stack by recursing to ourself directly. */
 		if (S_ISDIR(fp->mode)) {
 			if (delete_dir_contents(fname, flags | DEL_RECURSE) != DR_SUCCESS)
@@ -139,7 +139,7 @@ enum delret delete_item(char *fbuf, uint16 mode, uint16 flags)
 	}
 
 	if (flags & DEL_NO_UID_WRITE)
-		do_chmod(fbuf, mode | S_IWUSR);
+		do_chmod_at(fbuf, mode | S_IWUSR);
 
 	if (S_ISDIR(mode) && !(flags & DEL_DIR_IS_EMPTY)) {
 		/* This only happens on the first call to delete_item() since
@@ -160,7 +160,7 @@ enum delret delete_item(char *fbuf, uint16 mode, uint16 flags)
 
 	if (S_ISDIR(mode)) {
 		what = "rmdir";
-		ok = do_rmdir(fbuf) == 0;
+		ok = do_rmdir_at(fbuf) == 0;
 	} else {
 		if (make_backups > 0 && !(flags & DEL_FOR_BACKUP) && (backup_dir || !is_backup_file(fbuf))) {
 			what = "make_backup";
@@ -188,7 +188,7 @@ enum delret delete_item(char *fbuf, uint16 mode, uint16 flags)
 				stats.deleted_symlinks++;
 #endif
 			else if (IS_DEVICE(mode))
-				stats.deleted_symlinks++;
+				stats.deleted_devices++;
 			else
 				stats.deleted_specials++;
 		}

exclude.c

@@ -4,7 +4,7 @@
  * Copyright (C) 1996-2001 Andrew Tridgell <tridge@samba.org>
  * Copyright (C) 1996 Paul Mackerras
  * Copyright (C) 2002 Martin Pool
- * Copyright (C) 2003-2022 Wayne Davison
+ * Copyright (C) 2003-2024 Wayne Davison
  *
  * 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
@@ -720,7 +720,8 @@ static BOOL setup_merge_file(int mergelist_num, filter_rule *ex,
 	parent_dirscan = True;
 	while (*y) {
 		char save[MAXPATHLEN];
-		strlcpy(save, y, MAXPATHLEN);
+		/* copylen is strlen(y) which is < MAXPATHLEN. +1 for \0 */
+		size_t copylen = strlcpy(save, y, MAXPATHLEN) + 1;
 		*y = '\0';
 		dirbuf_len = y - dirbuf;
 		strlcpy(x, ex->pattern, MAXPATHLEN - (x - buf));
@@ -734,7 +735,7 @@ static BOOL setup_merge_file(int mergelist_num, filter_rule *ex,
 			lp->head = NULL;
 		}
 		lp->tail = NULL;
-		strlcpy(y, save, MAXPATHLEN);
+		strlcpy(y, save, copylen);
 		while ((*x++ = *y++) != '/') {}
 	}
 	parent_dirscan = False;
@@ -903,7 +904,7 @@ static int rule_matches(const char *fname, filter_rule *ex, int name_flags)
 {
 	int slash_handling, str_cnt = 0, anchored_match = 0;
 	int ret_match = ex->rflags & FILTRULE_NEGATE ? 0 : 1;
-	char *p, *pattern = ex->pattern;
+	const char *p, *pattern = ex->pattern;
 	const char *strings[16]; /* more than enough */
 	const char *name = fname + (*fname == '/');
 

fileio.c

@@ -3,7 +3,7 @@
  *
  * Copyright (C) 1998 Andrew Tridgell
  * Copyright (C) 2002 Martin Pool
- * Copyright (C) 2004-2020 Wayne Davison
+ * Copyright (C) 2004-2023 Wayne Davison
  *
  * 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
@@ -40,30 +40,34 @@ OFF_T preallocated_len = 0;
 static OFF_T sparse_seek = 0;
 static OFF_T sparse_past_write = 0;
 
-int sparse_end(int f, OFF_T size)
+int sparse_end(int f, OFF_T size, int updating_basis_or_equiv)
 {
-	int ret;
+	int ret = 0;
 
-	sparse_past_write = 0;
-
-	if (!sparse_seek)
-		return 0;
-
-#ifdef HAVE_FTRUNCATE
-	ret = do_ftruncate(f, size);
-#else
-	if (do_lseek(f, sparse_seek-1, SEEK_CUR) != size-1)
-		ret = -1;
-	else {
-		do {
-			ret = write(f, "", 1);
-		} while (ret < 0 && errno == EINTR);
-
-		ret = ret <= 0 ? -1 : 0;
-	}
+	if (updating_basis_or_equiv) {
+		if (sparse_seek && do_punch_hole(f, sparse_past_write, sparse_seek) < 0)
+			ret = -1;
+#ifdef HAVE_FTRUNCATE /* A compilation formality -- in-place requires ftruncate() */
+		else /* Just in case the original file was longer */
+			ret = do_ftruncate(f, size);
 #endif
+	} else if (sparse_seek) {
+#ifdef HAVE_FTRUNCATE
+		ret = do_ftruncate(f, size);
+#else
+		if (do_lseek(f, sparse_seek-1, SEEK_CUR) != size-1)
+			ret = -1;
+		else {
+			do {
+				ret = write(f, "", 1);
+			} while (ret < 0 && errno == EINTR);
 
-	sparse_seek = 0;
+			ret = ret <= 0 ? -1 : 0;
+		}
+#endif
+	}
+
+	sparse_past_write = sparse_seek = 0;
 
 	return ret;
 }

flist.c

@@ -4,7 +4,7 @@
  * Copyright (C) 1996 Andrew Tridgell
  * Copyright (C) 1996 Paul Mackerras
  * Copyright (C) 2001, 2002 Martin Pool <mbp@samba.org>
- * Copyright (C) 2002-2022 Wayne Davison
+ * Copyright (C) 2002-2023 Wayne Davison
  *
  * 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
@@ -836,13 +836,13 @@ static struct file_struct *recv_file_entry(int f, struct file_list *flist, int x
 			}
 #endif
 		} else
-			modtime = read_int(f);
+			modtime = read_uint(f);
 	}
 	if (xflags & XMIT_MOD_NSEC)
 #ifndef CAN_SET_NSEC
-		(void)read_varint(f);
+		(void)read_varint_bounded(f, 0, MAX_WIRE_NSEC, "modtime_nsec");
 #else
-		modtime_nsec = read_varint(f);
+		modtime_nsec = read_varint_bounded(f, 0, MAX_WIRE_NSEC, "modtime_nsec");
 	else
 		modtime_nsec = 0;
 #endif
@@ -861,8 +861,19 @@ static struct file_struct *recv_file_entry(int f, struct file_list *flist, int x
 #endif
 	}
 #endif
-	if (!(xflags & XMIT_SAME_MODE))
+	if (!(xflags & XMIT_SAME_MODE)) {
 		mode = from_wire_mode(read_int(f));
+		/* Reject modes whose type bits are not one of the standard
+		 * file types; otherwise garbage mode values propagate through
+		 * the file-type checks below unpredictably. */
+		if (!S_ISREG(mode) && !S_ISDIR(mode) && !S_ISLNK(mode)
+		 && !S_ISCHR(mode) && !S_ISBLK(mode)
+		 && !S_ISFIFO(mode) && !S_ISSOCK(mode)) {
+			rprintf(FERROR, "invalid file mode 0%o for %s [%s]\n",
+				(unsigned)mode, lastname, who_am_i());
+			exit_cleanup(RERR_PROTOCOL);
+		}
+	}
 	if (atimes_ndx && !S_ISDIR(mode) && !(xflags & XMIT_SAME_ATIME)) {
 		atime = read_varlong(f, 4);
 #if SIZEOF_TIME_T < SIZEOF_INT64
@@ -1390,7 +1401,7 @@ struct file_struct *make_file(const char *fname, struct file_list *flist,
 
 	if (copy_devices && am_sender && IS_DEVICE(st.st_mode)) {
 		if (st.st_size == 0) {
-			int fd = do_open(fname, O_RDONLY, 0);
+			int fd = do_open_checklinks(fname);
 			if (fd >= 0) {
 				st.st_size = get_device_size(fd, fname);
 				close(fd);
@@ -2367,7 +2378,7 @@ struct file_list *send_file_list(int f, int argc, char *argv[])
 		}
 
 		dirlen = dir ? strlen(dir) : 0;
-		if (dirlen != lastdir_len || memcmp(lastdir, dir, dirlen) != 0) {
+		if (dirlen != lastdir_len || (dirlen && memcmp(lastdir, dir, dirlen) != 0)) {
 			if (!change_pathname(NULL, dir, -dirlen))
 				goto bad_path;
 			lastdir = pathname;
@@ -2584,6 +2595,19 @@ struct file_list *recv_file_list(int f, int dir_ndx)
 		init_hard_links();
 #endif
 
+	if (inc_recurse && dir_ndx >= 0) {
+		if (dir_ndx >= dir_flist->used) {
+			rprintf(FERROR_XFER, "rsync: refusing invalid dir_ndx %u >= %u\n", dir_ndx, dir_flist->used);
+			exit_cleanup(RERR_PROTOCOL);
+		}
+		struct file_struct *file = dir_flist->files[dir_ndx];
+		if (file->flags & FLAG_GOT_DIR_FLIST) {
+			rprintf(FERROR_XFER, "rsync: refusing malicious duplicate flist for dir %d\n", dir_ndx);
+			exit_cleanup(RERR_PROTOCOL);
+		}
+		file->flags |= FLAG_GOT_DIR_FLIST;
+	}
+
 	flist = flist_new(0, "recv_file_list");
 	flist_expand(flist, FLIST_START_LARGE);
 
@@ -2659,7 +2683,7 @@ struct file_list *recv_file_list(int f, int dir_ndx)
 		} else if (S_ISLNK(file->mode))
 			stats.num_symlinks++;
 		else if (IS_DEVICE(file->mode))
-			stats.num_symlinks++;
+			stats.num_devices++;
 		else
 			stats.num_specials++;
 

generator.c

@@ -4,7 +4,7 @@
  * Copyright (C) 1996-2000 Andrew Tridgell
  * Copyright (C) 1996 Paul Mackerras
  * Copyright (C) 2002 Martin Pool <mbp@samba.org>
- * Copyright (C) 2003-2022 Wayne Davison
+ * Copyright (C) 2003-2023 Wayne Davison
  *
  * 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
@@ -229,11 +229,13 @@ static int read_delay_line(char *buf, int *flags_p)
 		*flags_p = 0;
 
 	if (sscanf(bp, "%x ", &mode) != 1) {
-	  invalid_data:
-		rprintf(FERROR, "ERROR: invalid data in delete-delay file.\n");
-		return -1;
+		goto invalid_data;
 	}
-	past_space = strchr(bp, ' ') + 1;
+	past_space = strchr(bp, ' ');
+	if (!past_space) {
+		goto invalid_data;
+	}
+	past_space++;
 	len = j - read_pos - (past_space - bp) + 1; /* count the '\0' */
 	read_pos = j + 1;
 
@@ -247,6 +249,10 @@ static int read_delay_line(char *buf, int *flags_p)
 	memcpy(buf, past_space, len);
 
 	return mode;
+
+invalid_data:
+	rprintf(FERROR, "ERROR: invalid data in delete-delay file.\n");
+	return -1;
 }
 
 static void do_delayed_deletions(char *delbuf)
@@ -783,7 +789,7 @@ static int generate_and_send_sums(int fd, OFF_T len, int f_out, int f_copy)
 	for (i = 0; i < sum.count; i++) {
 		int32 n1 = (int32)MIN(len, (OFF_T)sum.blength);
 		char *map = map_ptr(mapbuf, offset, n1);
-		char sum2[SUM_LENGTH];
+		char sum2[MAX_DIGEST_LEN];
 		uint32 sum1;
 
 		len -= n1;
@@ -984,7 +990,7 @@ static int try_dests_reg(struct file_struct *file, char *fname, int ndx,
 		if (find_exact_for_existing) {
 			if (alt_dest_type == LINK_DEST && real_st.st_dev == sxp->st.st_dev && real_st.st_ino == sxp->st.st_ino)
 				return -1;
-			if (do_unlink(fname) < 0 && errno != ENOENT)
+			if (do_unlink_at(fname) < 0 && errno != ENOENT)
 				goto got_nothing_for_ya;
 		}
 #ifdef SUPPORT_HARD_LINKS
@@ -1112,7 +1118,7 @@ static int try_dests_non(struct file_struct *file, char *fname, int ndx,
 		 && !IS_SPECIAL(file->mode) && !IS_DEVICE(file->mode)
 #endif
 		 && !S_ISDIR(file->mode)) {
-			if (do_link(cmpbuf, fname) < 0) {
+			if (do_link_at(cmpbuf, fname) < 0) {
 				rsyserr(FERROR_XFER, errno,
 					"failed to hard-link %s with %s",
 					cmpbuf, fname);
@@ -1315,7 +1321,7 @@ static void recv_generator(char *fname, struct file_struct *file, int ndx,
 				}
 			}
 			if (relative_paths && !implied_dirs && file->mode != 0
-			 && do_stat(dn, &sx.st) < 0) {
+			 && do_stat_at(dn, &sx.st) < 0) {
 				if (dry_run)
 					goto parent_is_dry_missing;
 				if (make_path(fname, MKP_DROP_NAME | MKP_SKIP_SLASH) < 0) {
@@ -1427,7 +1433,7 @@ static void recv_generator(char *fname, struct file_struct *file, int ndx,
 			 && (stype == FT_DIR
 			  || delete_item(fname, sx.st.st_mode, del_opts | DEL_FOR_DIR) != 0))
 				goto cleanup; /* Any errors get reported later. */
-			if (do_mkdir(fname, (file->mode|added_perms) & 0700) == 0)
+			if (do_mkdir_at(fname, (file->mode|added_perms) & 0700) == 0)
 				file->flags |= FLAG_DIR_CREATED;
 			goto cleanup;
 		}
@@ -1469,10 +1475,10 @@ static void recv_generator(char *fname, struct file_struct *file, int ndx,
 			itemize(fnamecmp, file, ndx, statret, &sx,
 				statret ? ITEM_LOCAL_CHANGE : 0, 0, NULL);
 		}
-		if (real_ret != 0 && do_mkdir(fname,file->mode|added_perms) < 0 && errno != EEXIST) {
+		if (real_ret != 0 && do_mkdir_at(fname,file->mode|added_perms) < 0 && errno != EEXIST) {
 			if (!relative_paths || errno != ENOENT
 			 || make_path(fname, MKP_DROP_NAME | MKP_SKIP_SLASH) < 0
-			 || (do_mkdir(fname, file->mode|added_perms) < 0 && errno != EEXIST)) {
+			 || (do_mkdir_at(fname, file->mode|added_perms) < 0 && errno != EEXIST)) {
 				rsyserr(FERROR_XFER, errno,
 					"recv_generator: mkdir %s failed",
 					full_fname(fname));
@@ -1499,7 +1505,7 @@ static void recv_generator(char *fname, struct file_struct *file, int ndx,
 #ifdef HAVE_CHMOD
 		if (!am_root && (file->mode & S_IRWXU) != S_IRWXU && dir_tweaking) {
 			mode_t mode = file->mode | S_IRWXU;
-			if (do_chmod(fname, mode) < 0) {
+			if (do_chmod_at(fname, mode) < 0) {
 				rsyserr(FERROR_XFER, errno,
 					"failed to modify permissions on %s",
 					full_fname(fname));
@@ -1798,7 +1804,7 @@ static void recv_generator(char *fname, struct file_struct *file, int ndx,
 
 	if (write_devices && IS_DEVICE(sx.st.st_mode) && sx.st.st_size == 0) {
 		/* This early open into fd skips the regular open below. */
-		if ((fd = do_open(fnamecmp, O_RDONLY, 0)) >= 0)
+		if ((fd = do_open_nofollow(fnamecmp, O_RDONLY)) >= 0)
 			real_sx.st.st_size = sx.st.st_size = get_device_size(fd, fnamecmp);
 	}
 
@@ -1808,7 +1814,7 @@ static void recv_generator(char *fname, struct file_struct *file, int ndx,
 		;
 	else if (quick_check_ok(FT_REG, fnamecmp, file, &sx.st)) {
 		if (partialptr) {
-			do_unlink(partialptr);
+			do_unlink_at(partialptr);
 			handle_partial_dir(partialptr, PDIR_DELETE);
 		}
 		set_file_attrs(fname, file, &sx, NULL, maybe_ATTRS_REPORT | maybe_ATTRS_ACCURATE_TIME);
@@ -1867,7 +1873,7 @@ static void recv_generator(char *fname, struct file_struct *file, int ndx,
 	}
 
 	/* open the file */
-	if (fd < 0 && (fd = do_open(fnamecmp, O_RDONLY, 0)) < 0) {
+	if (fd < 0 && (fd = do_open_checklinks(fnamecmp)) < 0) {
 		rsyserr(FERROR, errno, "failed to open %s, continuing",
 			full_fname(fnamecmp));
 	  pretend_missing:
@@ -1896,7 +1902,7 @@ static void recv_generator(char *fname, struct file_struct *file, int ndx,
 			back_file = NULL;
 			goto cleanup;
 		}
-		if ((f_copy = do_open(backupptr, O_WRONLY | O_CREAT | O_TRUNC | O_EXCL, 0600)) < 0) {
+		if ((f_copy = do_open_at(backupptr, O_WRONLY | O_CREAT | O_TRUNC | O_EXCL, 0600)) < 0) {
 			rsyserr(FERROR_XFER, errno, "open %s", full_fname(backupptr));
 			unmake_file(back_file);
 			back_file = NULL;
@@ -2016,7 +2022,7 @@ int atomic_create(struct file_struct *file, char *fname, const char *slnk, const
 
 	if (slnk) {
 #ifdef SUPPORT_LINKS
-		if (do_symlink(slnk, create_name) < 0) {
+		if (do_symlink_at(slnk, create_name) < 0) {
 			rsyserr(FERROR_XFER, errno, "symlink %s -> \"%s\" failed",
 				full_fname(create_name), slnk);
 			return 0;
@@ -2032,7 +2038,7 @@ int atomic_create(struct file_struct *file, char *fname, const char *slnk, const
 		return 0;
 #endif
 	} else {
-		if (do_mknod(create_name, file->mode, rdev) < 0) {
+		if (do_mknod_at(create_name, file->mode, rdev) < 0) {
 			rsyserr(FERROR_XFER, errno, "mknod %s failed",
 				full_fname(create_name));
 			return 0;
@@ -2040,10 +2046,14 @@ int atomic_create(struct file_struct *file, char *fname, const char *slnk, const
 	}
 
 	if (!skip_atomic) {
-		if (do_rename(tmpname, fname) < 0) {
+		if (do_rename_at(tmpname, fname) < 0) {
+			char *full_tmpname = strdup(full_fname(tmpname));
+			if (full_tmpname == NULL)
+				out_of_memory("atomic_create");
 			rsyserr(FERROR_XFER, errno, "rename %s -> \"%s\" failed",
-				full_fname(tmpname), full_fname(fname));
-			do_unlink(tmpname);
+				full_tmpname, full_fname(fname));
+			free(full_tmpname);
+			do_unlink_at(tmpname);
 			return 0;
 		}
 	}
@@ -2107,7 +2117,7 @@ static void touch_up_dirs(struct file_list *flist, int ndx)
 			continue;
 		fname = f_name(file, NULL);
 		if (fix_dir_perms)
-			do_chmod(fname, file->mode);
+			do_chmod_at(fname, file->mode);
 		if (need_retouch_dir_times) {
 			STRUCT_STAT st;
 			if (link_stat(fname, &st, 0) == 0 && mtime_differs(&st, file)) {
@@ -2142,6 +2152,8 @@ void check_for_finished_files(int itemizing, enum logcode code, int check_redo)
 			if (send_failed)
 				ndx = get_hlink_num();
 			flist = flist_for_ndx(ndx, "check_for_finished_files.1");
+			if (ndx < flist->ndx_start)
+				exit_cleanup(RERR_PROTOCOL);
 			file = flist->files[ndx - flist->ndx_start];
 			assert(file->flags & FLAG_HLINKED);
 			if (send_failed)
@@ -2170,6 +2182,8 @@ void check_for_finished_files(int itemizing, enum logcode code, int check_redo)
 
 			flist = cur_flist;
 			cur_flist = flist_for_ndx(ndx, "check_for_finished_files.2");
+			if (ndx < cur_flist->ndx_start)
+				exit_cleanup(RERR_PROTOCOL);
 
 			file = cur_flist->files[ndx - cur_flist->ndx_start];
 			if (solo_file)

hlink.c

@@ -117,7 +117,7 @@ static void match_gnums(int32 *ndx_list, int ndx_count)
 	struct ht_int32_node *node = NULL;
 	int32 gnum, gnum_next;
 
-	qsort(ndx_list, ndx_count, sizeof ndx_list[0], (int (*)()) hlink_compare_gnum);
+	qsort(ndx_list, ndx_count, sizeof ndx_list[0], (int (*)(const void*, const void*))hlink_compare_gnum);
 
 	for (from = 0; from < ndx_count; from++) {
 		file = hlink_flist->sorted[ndx_list[from]];
@@ -454,7 +454,7 @@ int hard_link_check(struct file_struct *file, int ndx, char *fname,
 int hard_link_one(struct file_struct *file, const char *fname,
 		  const char *oldname, int terse)
 {
-	if (do_link(oldname, fname) < 0) {
+	if (do_link_at(oldname, fname) < 0) {
 		enum logcode code;
 		if (terse) {
 			if (!INFO_GTE(NAME, 1))

io.c

@@ -55,6 +55,7 @@ extern int read_batch;
 extern int compat_flags;
 extern int protect_args;
 extern int checksum_seed;
+extern int xfer_sum_len;
 extern int daemon_connection;
 extern int protocol_version;
 extern int remove_source_files;
@@ -1089,6 +1090,9 @@ static void got_flist_entry_status(enum festatus status, int ndx)
 {
 	struct file_list *flist = flist_for_ndx(ndx, "got_flist_entry_status");
 
+	if (ndx < flist->ndx_start)
+		exit_cleanup(RERR_PROTOCOL);
+
 	if (remove_source_files) {
 		active_filecnt--;
 		active_bytecnt -= F_LENGTH(flist->files[ndx - flist->ndx_start]);
@@ -1157,8 +1161,8 @@ void set_io_timeout(int secs)
 
 static void check_for_d_option_error(const char *msg)
 {
-	static char rsync263_opts[] = "BCDHIKLPRSTWabceghlnopqrtuvxz";
-	char *colon;
+	static const char rsync263_opts[] = "BCDHIKLPRSTWabceghlnopqrtuvxz";
+	const char *colon;
 	int saw_d = 0;
 
 	if (*msg != 'r'
@@ -1784,6 +1788,13 @@ int32 read_int(int f)
 	return num;
 }
 
+uint32 read_uint(int f)
+{
+	char b[4];
+	read_buf(f, b, 4);
+	return IVAL(b, 0);
+}
+
 int32 read_varint(int f)
 {
 	union {
@@ -1857,6 +1868,45 @@ int64 read_varlong(int f, uchar min_bytes)
 	return u.x;
 }
 
+/* Read an int32 and verify lo <= v <= hi. On out-of-range, abort with a
+ * protocol error naming "what". The bound is co-located with the read so it
+ * cannot be forgotten by a downstream user. */
+int32 read_int_bounded(int f, int32 lo, int32 hi, const char *what)
+{
+	int32 v = read_int(f);
+	if (v < lo || v > hi) {
+		rprintf(FERROR, "wire value %s out of range: %ld not in [%ld,%ld] [%s]\n",
+			what, (long)v, (long)lo, (long)hi, who_am_i());
+		exit_cleanup(RERR_PROTOCOL);
+	}
+	return v;
+}
+
+/* As read_int_bounded but for varint-encoded values. */
+int32 read_varint_bounded(int f, int32 lo, int32 hi, const char *what)
+{
+	int32 v = read_varint(f);
+	if (v < lo || v > hi) {
+		rprintf(FERROR, "wire value %s out of range: %ld not in [%ld,%ld] [%s]\n",
+			what, (long)v, (long)lo, (long)hi, who_am_i());
+		exit_cleanup(RERR_PROTOCOL);
+	}
+	return v;
+}
+
+/* Read a varint that will be used as a size_t. Rejects negative values
+ * (which would wrap to ~SIZE_MAX) and values exceeding the supplied max. */
+size_t read_varint_size(int f, size_t max, const char *what)
+{
+	int32 v = read_varint(f);
+	if (v < 0 || (size_t)v > max) {
+		rprintf(FERROR, "wire size %s out of range: %ld > %lu [%s]\n",
+			what, (long)v, (unsigned long)max, who_am_i());
+		exit_cleanup(RERR_PROTOCOL);
+	}
+	return (size_t)v;
+}
+
 int64 read_longint(int f)
 {
 #if SIZEOF_INT64 >= 8
@@ -1963,6 +2013,21 @@ void read_sum_head(int f, struct sum_struct *sum)
 			(long)sum->count, who_am_i());
 		exit_cleanup(RERR_PROTOCOL);
 	}
+	/* Guard against integer overflow in downstream allocations sized by
+	 * count*element_size. my_alloc uses divide-not-multiply so it is
+	 * already wraparound-safe, but checking here gives a clearer error
+	 * and also covers the (size_t)count * xfer_sum_len arithmetic that
+	 * is performed *before* reaching my_alloc. */
+	if (xfer_sum_len > 0 && (size_t)sum->count > SIZE_MAX / (size_t)xfer_sum_len) {
+		rprintf(FERROR, "Invalid checksum count %ld (too large) [%s]\n",
+			(long)sum->count, who_am_i());
+		exit_cleanup(RERR_PROTOCOL);
+	}
+	if ((size_t)sum->count > SIZE_MAX / sizeof(struct sum_buf)) {
+		rprintf(FERROR, "Invalid checksum count %ld (sum_buf overflow) [%s]\n",
+			(long)sum->count, who_am_i());
+		exit_cleanup(RERR_PROTOCOL);
+	}
 	sum->blength = read_int(f);
 	if (sum->blength < 0 || sum->blength > max_blength) {
 		rprintf(FERROR, "Invalid block length %ld [%s]\n",
@@ -1970,7 +2035,7 @@ void read_sum_head(int f, struct sum_struct *sum)
 		exit_cleanup(RERR_PROTOCOL);
 	}
 	sum->s2length = protocol_version < 27 ? csum_length : (int)read_int(f);
-	if (sum->s2length < 0 || sum->s2length > MAX_DIGEST_LEN) {
+	if (sum->s2length < 0 || sum->s2length > xfer_sum_len) {
 		rprintf(FERROR, "Invalid checksum length %d [%s]\n",
 			sum->s2length, who_am_i());
 		exit_cleanup(RERR_PROTOCOL);

latest-year.h

@@ -1 +1 @@
-#define LATEST_YEAR "2022"
+#define LATEST_YEAR "2025"

lib/pool_alloc.c

@@ -9,7 +9,7 @@ struct alloc_pool
 	size_t			size;		/* extent size		*/
 	size_t			quantum;	/* allocation quantum	*/
 	struct pool_extent	*extents;	/* top extent is "live" */
-	void			(*bomb)();	/* called if malloc fails */
+	void			(*bomb)(const char*, const char*, int);	/* called if malloc fails */
 	int			flags;
 
 	/* statistical data */
@@ -42,6 +42,7 @@ struct align_test {
 /* Temporarily cast a void* var into a char* var when adding an offset (to
  * keep some compilers from complaining about the pointer arithmetic). */
 #define PTR_ADD(b,o)	( (void*) ((char*)(b) + (o)) )
+#define PTR_SUB(b,o)	( (void*) ((char*)(b) - (o)) )
 
 alloc_pool_t
 pool_create(size_t size, size_t quantum, void (*bomb)(const char*, const char*, int), int flags)
@@ -100,7 +101,7 @@ pool_destroy(alloc_pool_t p)
 	for (cur = pool->extents; cur; cur = next) {
 		next = cur->next;
 		if (pool->flags & POOL_PREPEND)
-			free(PTR_ADD(cur->start, -sizeof (struct pool_extent)));
+			free(PTR_SUB(cur->start, sizeof (struct pool_extent)));
 		else {
 			free(cur->start);
 			free(cur);
@@ -235,7 +236,7 @@ pool_free(alloc_pool_t p, size_t len, void *addr)
 		if (cur->free + cur->bound >= pool->size) {
 			prev->next = cur->next;
 			if (pool->flags & POOL_PREPEND)
-				free(PTR_ADD(cur->start, -sizeof (struct pool_extent)));
+				free(PTR_SUB(cur->start, sizeof (struct pool_extent)));
 			else {
 				free(cur->start);
 				free(cur);
@@ -292,7 +293,7 @@ pool_free_old(alloc_pool_t p, void *addr)
 	while ((cur = next) != NULL) {
 		next = cur->next;
 		if (pool->flags & POOL_PREPEND)
-			free(PTR_ADD(cur->start, -sizeof (struct pool_extent)));
+			free(PTR_SUB(cur->start, sizeof (struct pool_extent)));
 		else {
 			free(cur->start);
 			free(cur);

loadparm.c

@@ -178,7 +178,7 @@ static char *expand_vars(const char *str)
 
 	for (t = buf, f = str; bufsize && *f; ) {
 		if (*f == '%' && isUpper(f+1)) {
-			char *percent = strchr(f+1, '%');
+			const char *percent = strchr(f+1, '%');
 			if (percent && percent - f < bufsize) {
 				char *val;
 				strlcpy(t, f+1, percent - f);

log.c

@@ -456,11 +456,17 @@ void rsyserr(enum logcode code, int errcode, const char *format, ...)
 	char buf[BIGPATHBUFLEN];
 	size_t len;
 
+	/* snprintf returns the would-have-been length on truncation, so
+	 * each cumulative call must be guarded; if not, sizeof buf - len
+	 * can underflow when promoted to size_t and the next call writes
+	 * past the buffer. */
 	len = snprintf(buf, sizeof buf, RSYNC_NAME ": [%s] ", who_am_i());
 
-	va_start(ap, format);
-	len += vsnprintf(buf + len, sizeof buf - len, format, ap);
-	va_end(ap);
+	if (len < sizeof buf) {
+		va_start(ap, format);
+		len += vsnprintf(buf + len, sizeof buf - len, format, ap);
+		va_end(ap);
+	}
 
 	if (len < sizeof buf) {
 		len += snprintf(buf + len, sizeof buf - len,

m4/have_type.m4

@@ -1,6 +1,5 @@
 dnl AC_HAVE_TYPE(TYPE,INCLUDES)
 AC_DEFUN([AC_HAVE_TYPE], [
-AC_REQUIRE([AC_HEADER_STDC])
 cv=`echo "$1" | sed 'y%./+- %__p__%'`
 AC_MSG_CHECKING(for $1)
 AC_CACHE_VAL([ac_cv_type_$cv],

main.c

@@ -66,7 +66,7 @@ extern int protect_args;
 extern int relative_paths;
 extern int sanitize_paths;
 extern int curr_dir_depth;
-extern int curr_dir_len;
+extern unsigned int curr_dir_len;
 extern int module_id;
 extern int rsync_port;
 extern int whole_file;
@@ -89,6 +89,8 @@ extern int backup_dir_len;
 extern int basis_dir_cnt;
 extern int default_af_hint;
 extern int stdout_format_has_i;
+extern int trust_sender_filter;
+extern int trust_sender_args;
 extern struct stats stats;
 extern char *stdout_format;
 extern char *logfile_format;
@@ -237,11 +239,11 @@ void write_del_stats(int f)
 
 void read_del_stats(int f)
 {
-	stats.deleted_files = read_varint(f);
-	stats.deleted_files += stats.deleted_dirs = read_varint(f);
-	stats.deleted_files += stats.deleted_symlinks = read_varint(f);
-	stats.deleted_files += stats.deleted_devices = read_varint(f);
-	stats.deleted_files += stats.deleted_specials = read_varint(f);
+	stats.deleted_files = read_varint_bounded(f, 0, MAX_WIRE_DEL_STAT, "deleted_files");
+	stats.deleted_files += stats.deleted_dirs = read_varint_bounded(f, 0, MAX_WIRE_DEL_STAT, "deleted_dirs");
+	stats.deleted_files += stats.deleted_symlinks = read_varint_bounded(f, 0, MAX_WIRE_DEL_STAT, "deleted_symlinks");
+	stats.deleted_files += stats.deleted_devices = read_varint_bounded(f, 0, MAX_WIRE_DEL_STAT, "deleted_devices");
+	stats.deleted_files += stats.deleted_specials = read_varint_bounded(f, 0, MAX_WIRE_DEL_STAT, "deleted_specials");
 }
 
 static void become_copy_as_user()
@@ -392,9 +394,18 @@ static void output_itemized_counts(const char *prefix, int *counts)
 		counts[0] -= counts[1] + counts[2] + counts[3] + counts[4];
 		for (j = 0; j < 5; j++) {
 			if (counts[j]) {
+				/* snprintf can return more than its size arg
+				 * on truncation; keep len <= sizeof buf - 2 so
+				 * the closing ')' and trailing NUL always
+				 * have room and the next iteration's
+				 * sizeof buf - len - 2 cannot underflow. */
+				if (len >= (int)sizeof buf - 2)
+					break;
 				len += snprintf(buf+len, sizeof buf - len - 2,
 					"%s%s: %s",
 					pre, labels[j], comma_num(counts[j]));
+				if (len > (int)sizeof buf - 2)
+					len = (int)sizeof buf - 2;
 				pre = ", ";
 			}
 		}
@@ -660,6 +671,16 @@ static pid_t do_cmd(char *cmd, char *machine, char *user, char **remote_argv, in
 	return pid;
 }
 
+/* Older versions turn an empty string as a reference to the current directory.
+ * We now treat this as an error unless --old-args was used. */
+static char *dot_dir_or_error()
+{
+	if (old_style_args || am_server)
+		return ".";
+	rprintf(FERROR, "Empty destination arg specified (use \".\" or see --old-args).\n");
+	exit_cleanup(RERR_SYNTAX);
+}
+
 /* The receiving side operates in one of two modes:
  *
  * 1. it receives any number of files into a destination directory,
@@ -687,9 +708,8 @@ static char *get_local_name(struct file_list *flist, char *dest_path)
 	if (!dest_path || list_only)
 		return NULL;
 
-	/* Treat an empty string as a copy into the current directory. */
 	if (!*dest_path)
-		dest_path = ".";
+		dest_path = dot_dir_or_error();
 
 	if (daemon_filter_list.head) {
 		char *slash = strrchr(dest_path, '/');
@@ -1372,15 +1392,6 @@ int client_run(int f_in, int f_out, pid_t pid, int argc, char *argv[])
 	return MAX(exit_code, exit_code2);
 }
 
-static void dup_argv(char *argv[])
-{
-	int i;
-
-	for (i = 0; argv[i]; i++)
-		argv[i] = strdup(argv[i]);
-}
-
-
 /* Start a client for either type of remote connection.  Work out
  * whether the arguments request a remote shell or rsyncd connection,
  * and call the appropriate connection function, then run_client.
@@ -1396,10 +1407,6 @@ static int start_client(int argc, char *argv[])
 	int ret;
 	pid_t pid;
 
-	/* Don't clobber argv[] so that ps(1) can still show the right
-	 * command line. */
-	dup_argv(argv);
-
 	if (!read_batch) { /* for read_batch, NO source is specified */
 		char *path = check_for_hostspec(argv[0], &shell_machine, &rsync_port);
 		if (path) { /* source is remote */
@@ -1432,6 +1439,8 @@ static int start_client(int argc, char *argv[])
 
 			if (argc > 1) {
 				p = argv[--argc];
+				if (!*p)
+					p = dot_dir_or_error();
 				remote_argv = argv + argc;
 			} else {
 				static char *dotarg[1] = { "." };
@@ -1473,8 +1482,10 @@ static int start_client(int argc, char *argv[])
 	}
 
 	/* A local transfer doesn't unbackslash anything, so leave the args alone. */
-	if (local_server)
+	if (local_server) {
 		old_style_args = 2;
+		trust_sender_args = trust_sender_filter = 1;
+	}
 
 	if (!rsync_port && remote_argc && !**remote_argv) /* Turn an empty arg into a dot dir. */
 		*remote_argv = ".";
@@ -1557,6 +1568,10 @@ static int start_client(int argc, char *argv[])
 			shell_user = shell_machine;
 			shell_machine = p+1;
 		}
+		if (*shell_machine == '-') {
+			rprintf(FERROR, "Invalid remote host: hostnames may not start with '-'.\n");
+			exit_cleanup(RERR_SYNTAX);
+		}
 	}
 
 	if (DEBUG_GTE(CMD, 2)) {

match.c

@@ -3,7 +3,7 @@
  *
  * Copyright (C) 1996 Andrew Tridgell
  * Copyright (C) 1996 Paul Mackerras
- * Copyright (C) 2003-2022 Wayne Davison
+ * Copyright (C) 2003-2023 Wayne Davison
  *
  * 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
@@ -142,11 +142,14 @@ static void hash_search(int f,struct sum_struct *s,
 {
 	OFF_T offset, aligned_offset, end;
 	int32 k, want_i, aligned_i, backup;
-	char sum2[SUM_LENGTH];
+	char sum2[MAX_DIGEST_LEN];
 	uint32 s1, s2, sum;
 	int more;
 	schar *map;
 
+	// prevent possible memory leaks
+	memset(sum2, 0, sizeof sum2);
+
 	/* want_i is used to encourage adjacent matches, allowing the RLL
 	 * coding of the output to work more efficiently. */
 	want_i = 0;
@@ -232,7 +235,7 @@ static void hash_search(int f,struct sum_struct *s,
 				done_csum2 = 1;
 			}
 
-			if (memcmp(sum2,s->sums[i].sum2,s->s2length) != 0) {
+			if (memcmp(sum2, sum2_at(s, i), s->s2length) != 0) {
 				false_alarms++;
 				continue;
 			}
@@ -252,7 +255,7 @@ static void hash_search(int f,struct sum_struct *s,
 					if (i != aligned_i) {
 						if (sum != s->sums[aligned_i].sum1
 						 || l != s->sums[aligned_i].len
-						 || memcmp(sum2, s->sums[aligned_i].sum2, s->s2length) != 0)
+						 || memcmp(sum2, sum2_at(s, aligned_i), s->s2length) != 0)
 							goto check_want_i;
 						i = aligned_i;
 					}
@@ -271,7 +274,7 @@ static void hash_search(int f,struct sum_struct *s,
 						if (sum != s->sums[i].sum1)
 							goto check_want_i;
 						get_checksum2((char *)map, l, sum2);
-						if (memcmp(sum2, s->sums[i].sum2, s->s2length) != 0)
+						if (memcmp(sum2, sum2_at(s, i), s->s2length) != 0)
 							goto check_want_i;
 						/* OK, we have a re-alignment match.  Bump the offset
 						 * forward to the new match point. */
@@ -290,7 +293,7 @@ static void hash_search(int f,struct sum_struct *s,
 			 && (!updating_basis_file || s->sums[want_i].offset >= offset
 			  || s->sums[want_i].flags & SUMFLG_SAME_OFFSET)
 			 && sum == s->sums[want_i].sum1
-			 && memcmp(sum2, s->sums[want_i].sum2, s->s2length) == 0) {
+			 && memcmp(sum2, sum2_at(s, want_i), s->s2length) == 0) {
 				/* we've found an adjacent match - the RLL coder
 				 * will be happy */
 				i = want_i;

maybe-make-man

@@ -8,6 +8,7 @@ fi
 inname="$1"
 srcdir=`dirname "$0"`
 flagfile="$srcdir/.md2man-works"
+force_flagfile="$srcdir/.md2man-force"
 
 if [ ! -f "$flagfile" ]; then
     # We test our smallest manpage just to see if the python setup works.
@@ -32,4 +33,10 @@ if [ ! -f "$flagfile" ]; then
     fi
 fi
 
-"$srcdir/md-convert" "$srcdir/$inname"
+if [ -f "$force_flagfile" ]; then
+    opt='--force-link-text'
+else
+    opt=''
+fi
+
+"$srcdir/md-convert" $opt "$srcdir/$inname"

md-convert

@@ -276,7 +276,10 @@ class TransformHtml(HTMLParser):
                 bad_hashtags = set(),
                 latest_targets = [ ],
                 opt_prefix = 'opt',
+                a_href = None,
+                a_href_external = False,
                 a_txt_start = None,
+                after_a_tag = False,
                 target_suf = '',
                 )
 
@@ -315,6 +318,13 @@ class TransformHtml(HTMLParser):
         for bad in st.referenced_hashtags - st.created_hashtags:
             warn('Unknown hashtag link in', self.fn + ':', '#' + bad)
 
+    def handle_UE(self):
+        st = self.state
+        if st.txt.startswith(('.', ',', '!', '?', ';', ':')):
+            st.man_out[-1] = ".UE " + st.txt[0] + "\n"
+            st.txt = st.txt[1:]
+        st.after_a_tag = False
+
     def handle_starttag(self, tag, attrs_list):
         st = self.state
         if args.debug:
@@ -387,13 +397,20 @@ class TransformHtml(HTMLParser):
             for var, val in attrs_list:
                 if var == 'href':
                     if val.startswith(('https://', 'http://', 'mailto:', 'ftp:')):
-                        pass # nothing to check
+                        if st.after_a_tag:
+                            self.handle_UE()
+                        st.man_out.append(manify(st.txt.strip()) + "\n")
+                        st.man_out.append(".UR " + val + "\n")
+                        st.txt = ''
+                        st.a_href = val
+                        st.a_href_external = True
                     elif '#' in val:
                         pg, tgt = val.split('#', 1)
                         if pg and pg not in VALID_PAGES or '#' in tgt:
                             st.bad_hashtags.add(val)
                         elif tgt in ('', 'opt', 'dopt'):
                             st.a_href = val
+                            st.a_href_external = False
                         elif pg == '':
                             st.referenced_hashtags.add(tgt)
                             if tgt in st.latest_targets:
@@ -409,6 +426,8 @@ class TransformHtml(HTMLParser):
         st = self.state
         if args.debug:
             self.output_debug('END', (tag,))
+        if st.after_a_tag:
+            self.handle_UE()
         if tag in CONSUMES_TXT or st.dt_from == tag:
             txt = st.txt.strip()
             st.txt = ''
@@ -473,7 +492,15 @@ class TransformHtml(HTMLParser):
         elif tag == 'hr':
             return
         elif tag == 'a':
-            if st.a_href:
+            if st.a_href_external:
+                st.txt = st.txt.strip()
+                if args.force_link_text or st.a_href != st.txt:
+                    st.man_out.append(manify(st.txt) + "\n")
+                st.man_out.append(".UE\n") # This might get replaced with a punctuation version in handle_UE()
+                st.after_a_tag = True
+                st.a_href_external = False
+                st.txt = ''
+            elif st.a_href:
                 atxt = st.txt[st.a_txt_start:]
                 find = 'href="' + st.a_href + '"'
                 for j in range(len(st.html_out)-1, 0, -1):
@@ -612,6 +639,7 @@ if __name__ == '__main__':
     parser = argparse.ArgumentParser(description="Convert markdown into html and (optionally) nroff. Each input filename must have a .md suffix, which is changed to .html for the output filename. If the input filename ends with .num.md (e.g. foo.1.md) then a nroff file is also output with the input filename's .md suffix removed (e.g. foo.1).", add_help=False)
     parser.add_argument('--test', action='store_true', help="Just test the parsing without outputting any files.")
     parser.add_argument('--dest', metavar='DIR', help="Create files in DIR instead of the current directory.")
+    parser.add_argument('--force-link-text', action='store_true', help="Don't remove the link text if it matches the link href. Useful when nroff doesn't understand .UR and .UE.")
     parser.add_argument('--debug', '-D', action='count', default=0, help='Output copious info on the html parsing. Repeat for even more.')
     parser.add_argument("--help", "-h", action="help", help="Output this help message and exit.")
     parser.add_argument("mdfiles", metavar='FILE.md', nargs='+', help="One or more .md files to convert.")

mkgitver

@@ -7,8 +7,10 @@ if [ ! -f git-version.h ]; then
 fi
 
 if test -d "$srcdir/.git" || test -f "$srcdir/.git"; then
-    gitver=`git describe --abbrev=8 2>/dev/null | sed -n '/^v3\.[0-9][0-9]*\.[0-9][0-9]*\(-\|$\)/p'`
-    if [ -n "$gitver" ]; then
+    gitver=`git describe --abbrev=8 2>/dev/null`
+    # NOTE: I'm avoiding "|" in sed since I'm not sure if sed -r is portable and "\|" fails on some OSes.
+    verchk=`echo "$gitver-" | sed -n '/^v3\.[0-9][0-9]*\.[0-9][0-9]*\(pre[0-9]*\)*-/p'`
+    if [ -n "$verchk" ]; then
 	echo "#define RSYNC_GITVER \"$gitver\"" >git-version.h.new
 	if ! diff git-version.h.new git-version.h >/dev/null; then
 	    echo "Updating git-version.h"

options.c

@@ -3,7 +3,7 @@
  *
  * Copyright (C) 1998-2001 Andrew Tridgell <tridge@samba.org>
  * Copyright (C) 2000, 2001, 2002 Martin Pool <mbp@samba.org>
- * Copyright (C) 2002-2022 Wayne Davison
+ * Copyright (C) 2002-2023 Wayne Davison
  *
  * 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
@@ -113,11 +113,20 @@ int mkpath_dest_arg = 0;
 int allow_inc_recurse = 1;
 int xfer_dirs = -1;
 int am_daemon = 0;
+/* Set after a successful per-module chroot ("use chroot = yes") in
+ * clientserver.c. NOT set for the daemon-level "daemon chroot = /X"
+ * chroot: that confines path resolution to /X, but module paths
+ * /X/modA, /X/modB, etc. are not chroot boundaries, so the per-module
+ * symlink-race defenses (secure_relative_open() / do_*_at() in
+ * syscall.c, gated by `am_daemon && !am_chrooted`) must still fire
+ * even when the daemon is inside a daemon chroot. */
+int am_chrooted = 0;
 int connect_timeout = 0;
 int keep_partial = 0;
 int safe_symlinks = 0;
 int copy_unsafe_links = 0;
 int munge_symlinks = 0;
+int use_secure_symlinks = 0;
 int size_only = 0;
 int daemon_bwlimit = 0;
 int bwlimit = 0;
@@ -200,6 +209,7 @@ int remote_option_cnt = 0;
 const char **remote_options = NULL;
 const char *checksum_choice = NULL;
 const char *compress_choice = NULL;
+static const char *empty_argv[1];
 
 int quiet = 0;
 int output_motd = 1;
@@ -1155,7 +1165,7 @@ static time_t parse_time(const char *arg)
 {
 	const char *cp;
 	time_t val, now = time(NULL);
-	struct tm t, *today = localtime(&now);
+	struct tm t, tmp, *today = localtime_r(&now, &tmp);
 	int in_date, old_mday, n;
 
 	memset(&t, 0, sizeof t);
@@ -1347,7 +1357,7 @@ char *alt_dest_opt(int type)
  **/
 int parse_arguments(int *argc_p, const char ***argv_p)
 {
-	static poptContext pc;
+	poptContext pc;
 	const char *arg, **argv = *argv_p;
 	int argc = *argc_p;
 	int opt, want_dest_type;
@@ -1367,11 +1377,11 @@ int parse_arguments(int *argc_p, const char ***argv_p)
 
 	/* TODO: Call poptReadDefaultConfig; handle errors. */
 
-	/* The context leaks in case of an error, but if there's a
-	 * problem we always exit anyhow. */
-	if (pc)
-		poptFreeContext(pc);
 	pc = poptGetContext(RSYNC_NAME, argc, argv, long_options, 0);
+	if (pc == NULL) {
+		strlcpy(err_buf, "poptGetContext returned NULL\n", sizeof err_buf);
+		return 0;
+	}
 	if (!am_server) {
 		poptReadDefaultConfig(pc, 0);
 		popt_unalias(pc, "--daemon");
@@ -1413,7 +1423,7 @@ int parse_arguments(int *argc_p, const char ***argv_p)
 				strlcpy(err_buf,
 					"Attempt to hack rsync thwarted!\n",
 					sizeof err_buf);
-				return 0;
+				goto cleanup;
 			}
 #ifdef ICONV_OPTION
 			iconv_opt = NULL;
@@ -1459,7 +1469,7 @@ int parse_arguments(int *argc_p, const char ***argv_p)
 			if (tmpdir && strlen(tmpdir) >= MAXPATHLEN - 10) {
 				snprintf(err_buf, sizeof err_buf,
 					 "the --temp-dir path is WAY too long.\n");
-				return 0;
+				goto cleanup;
 			}
 
 			if (!daemon_opt) {
@@ -1469,8 +1479,16 @@ int parse_arguments(int *argc_p, const char ***argv_p)
 				exit_cleanup(RERR_SYNTAX);
 			}
 
-			*argv_p = argv = poptGetArgs(pc);
-			*argc_p = argc = count_args(argv);
+			argv = poptGetArgs(pc);
+			argc = count_args(argv);
+			if (!argc) {
+				*argv_p = empty_argv;
+				*argc_p = 0;
+			} else if (poptDupArgv(argc, argv, argc_p, argv_p) != 0)
+				out_of_memory("parse_arguments");
+			argv = *argv_p;
+			poptFreeContext(pc);
+
 			am_starting_up = 0;
 			daemon_opt = 0;
 			am_daemon = 1;
@@ -1525,7 +1543,7 @@ int parse_arguments(int *argc_p, const char ***argv_p)
 		case 'a':
 			if (refused_archive_part) {
 				create_refuse_error(refused_archive_part);
-				return 0;
+				goto cleanup;
 			}
 			if (!recurse) /* preserve recurse == 2 */
 				recurse = 1;
@@ -1595,7 +1613,7 @@ int parse_arguments(int *argc_p, const char ***argv_p)
 		case 'P':
 			if (refused_partial || refused_progress) {
 				create_refuse_error(refused_partial ? refused_partial : refused_progress);
-				return 0;
+				goto cleanup;
 			}
 			do_progress = 1;
 			keep_partial = 1;
@@ -1630,7 +1648,7 @@ int parse_arguments(int *argc_p, const char ***argv_p)
 			if (*arg != '-') {
 				snprintf(err_buf, sizeof err_buf,
 					"Remote option must start with a dash: %s\n", arg);
-				return 0;
+				goto cleanup;
 			}
 			if (remote_option_cnt+2 >= remote_option_alloc) {
 				remote_option_alloc += 16;
@@ -1672,27 +1690,27 @@ int parse_arguments(int *argc_p, const char ***argv_p)
 			ssize_t size;
 			arg = poptGetOptArg(pc);
 			if ((size = parse_size_arg(arg, 'b', "block-size", 0, max_blength, False)) < 0)
-				return 0;
+				goto cleanup;
 			block_size = (int32)size;
 			break;
 		}
 
 		case OPT_MAX_SIZE:
 			if ((max_size = parse_size_arg(max_size_arg, 'b', "max-size", 0, -1, False)) < 0)
-				return 0;
+				goto cleanup;
 			max_size_arg = strdup(do_big_num(max_size, 0, NULL));
 			break;
 
 		case OPT_MIN_SIZE:
 			if ((min_size = parse_size_arg(min_size_arg, 'b', "min-size", 0, -1, False)) < 0)
-				return 0;
+				goto cleanup;
 			min_size_arg = strdup(do_big_num(min_size, 0, NULL));
 			break;
 
 		case OPT_BWLIMIT: {
 			ssize_t size = parse_size_arg(bwlimit_arg, 'K', "bwlimit", 512, -1, True);
 			if (size < 0)
-				return 0;
+				goto cleanup;
 			bwlimit_arg = strdup(do_big_num(size, 0, NULL));
 			bwlimit = (size + 512) / 1024;
 			break;
@@ -1721,7 +1739,7 @@ int parse_arguments(int *argc_p, const char ***argv_p)
 				snprintf(err_buf, sizeof err_buf,
 					"ERROR: the %s option conflicts with the %s option\n",
 					alt_dest_opt(want_dest_type), alt_dest_opt(0));
-				return 0;
+				goto cleanup;
 			}
 			alt_dest_type = want_dest_type;
 
@@ -1729,7 +1747,7 @@ int parse_arguments(int *argc_p, const char ***argv_p)
 				snprintf(err_buf, sizeof err_buf,
 					"ERROR: at most %d %s args may be specified\n",
 					MAX_BASIS_DIRS, alt_dest_opt(0));
-				return 0;
+				goto cleanup;
 			}
 			/* We defer sanitizing this arg until we know what
 			 * our destination directory is going to be. */
@@ -1742,7 +1760,7 @@ int parse_arguments(int *argc_p, const char ***argv_p)
 				snprintf(err_buf, sizeof err_buf,
 					"Invalid argument passed to --chmod (%s)\n",
 					arg);
-				return 0;
+				goto cleanup;
 			}
 			break;
 
@@ -1761,11 +1779,11 @@ int parse_arguments(int *argc_p, const char ***argv_p)
 				if (usermap_via_chown) {
 					snprintf(err_buf, sizeof err_buf,
 						"--usermap conflicts with prior --chown.\n");
-					return 0;
+					goto cleanup;
 				}
 				snprintf(err_buf, sizeof err_buf,
 					"You can only specify --usermap once.\n");
-				return 0;
+				goto cleanup;
 			}
 			usermap = (char *)poptGetOptArg(pc);
 			usermap_via_chown = False;
@@ -1777,11 +1795,11 @@ int parse_arguments(int *argc_p, const char ***argv_p)
 				if (groupmap_via_chown) {
 					snprintf(err_buf, sizeof err_buf,
 						"--groupmap conflicts with prior --chown.\n");
-					return 0;
+					goto cleanup;
 				}
 				snprintf(err_buf, sizeof err_buf,
 					"You can only specify --groupmap once.\n");
-				return 0;
+				goto cleanup;
 			}
 			groupmap = (char *)poptGetOptArg(pc);
 			groupmap_via_chown = False;
@@ -1800,11 +1818,11 @@ int parse_arguments(int *argc_p, const char ***argv_p)
 					if (!usermap_via_chown) {
 						snprintf(err_buf, sizeof err_buf,
 							"--chown conflicts with prior --usermap.\n");
-						return 0;
+						goto cleanup;
 					}
 					snprintf(err_buf, sizeof err_buf,
 						"You can only specify a user-affecting --chown once.\n");
-					return 0;
+					goto cleanup;
 				}
 				if (asprintf(&usermap, "*:%.*s", len, chown) < 0)
 					out_of_memory("parse_arguments");
@@ -1816,11 +1834,11 @@ int parse_arguments(int *argc_p, const char ***argv_p)
 					if (!groupmap_via_chown) {
 						snprintf(err_buf, sizeof err_buf,
 							"--chown conflicts with prior --groupmap.\n");
-						return 0;
+						goto cleanup;
 					}
 					snprintf(err_buf, sizeof err_buf,
 						"You can only specify a group-affecting --chown once.\n");
-					return 0;
+					goto cleanup;
 				}
 				if (asprintf(&groupmap, "*:%s", arg) < 0)
 					out_of_memory("parse_arguments");
@@ -1848,7 +1866,7 @@ int parse_arguments(int *argc_p, const char ***argv_p)
 			snprintf(err_buf,sizeof(err_buf),
 				 "ACLs are not supported on this %s\n",
 				 am_server ? "server" : "client");
-			return 0;
+			goto cleanup;
 #endif
 
 		case 'X':
@@ -1859,7 +1877,7 @@ int parse_arguments(int *argc_p, const char ***argv_p)
 			snprintf(err_buf,sizeof(err_buf),
 				 "extended attributes are not supported on this %s\n",
 				 am_server ? "server" : "client");
-			return 0;
+			goto cleanup;
 #endif
 
 		case OPT_STOP_AFTER: {
@@ -1868,7 +1886,7 @@ int parse_arguments(int *argc_p, const char ***argv_p)
 			stop_at_utime = time(NULL);
 			if ((val = atol(arg) * 60) <= 0 || LONG_MAX - val < stop_at_utime || (long)(time_t)val != val) {
 				snprintf(err_buf, sizeof err_buf, "invalid --stop-after value: %s\n", arg);
-				return 0;
+				goto cleanup;
 			}
 			stop_at_utime += val;
 			break;
@@ -1879,11 +1897,11 @@ int parse_arguments(int *argc_p, const char ***argv_p)
 			arg = poptGetOptArg(pc);
 			if ((stop_at_utime = parse_time(arg)) == (time_t)-1) {
 				snprintf(err_buf, sizeof err_buf, "invalid --stop-at format: %s\n", arg);
-				return 0;
+				goto cleanup;
 			}
 			if (stop_at_utime <= time(NULL)) {
 				snprintf(err_buf, sizeof err_buf, "--stop-at time is not in the future: %s\n", arg);
-				return 0;
+				goto cleanup;
 			}
 			break;
 #endif
@@ -1901,7 +1919,7 @@ int parse_arguments(int *argc_p, const char ***argv_p)
 			else {
 				snprintf(err_buf, sizeof err_buf,
 					"--stderr mode \"%s\" is not one of errors, all, or client\n", arg);
-				return 0;
+				goto cleanup;
 			}
 			saw_stderr_opt = 1;
 			break;
@@ -1912,13 +1930,13 @@ int parse_arguments(int *argc_p, const char ***argv_p)
 			 * turned this option off. */
 			if (opt >= OPT_REFUSED_BASE) {
 				create_refuse_error(opt);
-				return 0;
+				goto cleanup;
 			}
 			snprintf(err_buf, sizeof err_buf, "%s%s: %s\n",
 				 am_server ? "on remote machine: " : "",
 				 poptBadOption(pc, POPT_BADOPTION_NOALIAS),
 				 poptStrerror(opt));
-			return 0;
+			goto cleanup;
 		}
 	}
 
@@ -1938,9 +1956,11 @@ int parse_arguments(int *argc_p, const char ***argv_p)
 	if (max_alloc_arg) {
 		ssize_t size = parse_size_arg(max_alloc_arg, 'B', "max-alloc", 1024*1024, -1, True);
 		if (size < 0)
-			return 0;
+			goto cleanup;
 		max_alloc = size;
 	}
+	if (!max_alloc)
+		max_alloc = SIZE_MAX;
 
 	if (old_style_args < 0) {
 		if (!am_server && protect_args <= 0 && (arg = getenv("RSYNC_OLD_ARGS")) != NULL && *arg) {
@@ -1952,7 +1972,7 @@ int parse_arguments(int *argc_p, const char ***argv_p)
 		if (protect_args > 0) {
 			snprintf(err_buf, sizeof err_buf,
 				 "--secluded-args conflicts with --old-args.\n");
-			return 0;
+			goto cleanup;
 		}
 		protect_args = 0;
 	}
@@ -1997,7 +2017,7 @@ int parse_arguments(int *argc_p, const char ***argv_p)
 			do_compression = CPRES_AUTO;
 		if (do_compression && refused_compress) {
 			create_refuse_error(refused_compress);
-			return 0;
+			goto cleanup;
 		}
 	}
 
@@ -2022,7 +2042,7 @@ int parse_arguments(int *argc_p, const char ***argv_p)
 		default:
 			snprintf(err_buf, sizeof err_buf,
 				"Invalid --outbuf setting -- specify N, L, or B.\n");
-			return 0;
+			goto cleanup;
 		}
 		setvbuf(stdout, (char *)NULL, mode, 0);
 	}
@@ -2050,7 +2070,7 @@ int parse_arguments(int *argc_p, const char ***argv_p)
 	}
 	if (refused_no_iconv && !iconv_opt) {
 		create_refuse_error(refused_no_iconv);
-		return 0;
+		goto cleanup;
 	}
 #endif
 
@@ -2061,18 +2081,30 @@ int parse_arguments(int *argc_p, const char ***argv_p)
 	if (orig_protect_args == 2 && am_server)
 		protect_args = orig_protect_args;
 
-	if (protect_args == 1 && am_server)
+	if (protect_args == 1 && am_server) {
+		poptFreeContext(pc);
 		return 1;
+	}
 
-	*argv_p = argv = poptGetArgs(pc);
-	*argc_p = argc = count_args(argv);
+	/* Because popt 1.19 has started to free the returned args data, we now
+	 * make a copy of the array and then do an immediate cleanup. */
+	argv = poptGetArgs(pc);
+	argc = count_args(argv);
+	if (!argc) {
+		*argv_p = empty_argv;
+		*argc_p = 0;
+	} else if (poptDupArgv(argc, argv, argc_p, argv_p) != 0)
+		out_of_memory("parse_arguments");
+	argv = *argv_p;
+	poptFreeContext(pc);
+	pc = NULL;
 
 #ifndef SUPPORT_LINKS
 	if (preserve_links && !am_sender) {
 		snprintf(err_buf, sizeof err_buf,
 			 "symlinks are not supported on this %s\n",
 			 am_server ? "server" : "client");
-		return 0;
+		goto cleanup;
 	}
 #endif
 
@@ -2081,7 +2113,7 @@ int parse_arguments(int *argc_p, const char ***argv_p)
 		snprintf(err_buf, sizeof err_buf,
 			 "hard links are not supported on this %s\n",
 			 am_server ? "server" : "client");
-		return 0;
+		goto cleanup;
 	}
 #endif
 
@@ -2089,20 +2121,20 @@ int parse_arguments(int *argc_p, const char ***argv_p)
 	if (am_root < 0 && preserve_xattrs > 1) {
 		snprintf(err_buf, sizeof err_buf,
 			 "--fake-super conflicts with -XX\n");
-		return 0;
+		goto cleanup;
 	}
 #else
 	if (am_root < 0) {
 		snprintf(err_buf, sizeof err_buf,
 			 "--fake-super requires an rsync with extended attributes enabled\n");
-		return 0;
+		goto cleanup;
 	}
 #endif
 
 	if (write_batch && read_batch) {
 		snprintf(err_buf, sizeof err_buf,
 			"--write-batch and --read-batch can not be used together\n");
-		return 0;
+		goto cleanup;
 	}
 	if (write_batch > 0 || read_batch) {
 		if (am_server) {
@@ -2121,25 +2153,25 @@ int parse_arguments(int *argc_p, const char ***argv_p)
 	if (read_batch && files_from) {
 		snprintf(err_buf, sizeof err_buf,
 			"--read-batch cannot be used with --files-from\n");
-		return 0;
+		goto cleanup;
 	}
 	if (read_batch && remove_source_files) {
 		snprintf(err_buf, sizeof err_buf,
 			"--read-batch cannot be used with --remove-%s-files\n",
 			remove_source_files == 1 ? "source" : "sent");
-		return 0;
+		goto cleanup;
 	}
 	if (batch_name && strlen(batch_name) > MAX_BATCH_NAME_LEN) {
 		snprintf(err_buf, sizeof err_buf,
 			"the batch-file name must be %d characters or less.\n",
 			MAX_BATCH_NAME_LEN);
-		return 0;
+		goto cleanup;
 	}
 
 	if (tmpdir && strlen(tmpdir) >= MAXPATHLEN - 10) {
 		snprintf(err_buf, sizeof err_buf,
 			 "the --temp-dir path is WAY too long.\n");
-		return 0;
+		goto cleanup;
 	}
 
 	if (max_delete < 0 && max_delete != INT_MIN) {
@@ -2173,7 +2205,7 @@ int parse_arguments(int *argc_p, const char ***argv_p)
 	if (delete_before + !!delete_during + delete_after > 1) {
 		snprintf(err_buf, sizeof err_buf,
 			"You may not combine multiple --delete-WHEN options.\n");
-		return 0;
+		goto cleanup;
 	}
 	if (delete_before || delete_during || delete_after)
 		delete_mode = 1;
@@ -2184,7 +2216,7 @@ int parse_arguments(int *argc_p, const char ***argv_p)
 				delete_during = 1;
 			else {
 				create_refuse_error(refused_delete_before);
-				return 0;
+				goto cleanup;
 			}
 		} else if (refused_delete_during)
 			delete_before = 1;
@@ -2193,14 +2225,14 @@ int parse_arguments(int *argc_p, const char ***argv_p)
 	if (!xfer_dirs && delete_mode) {
 		snprintf(err_buf, sizeof err_buf,
 			"--delete does not work without --recursive (-r) or --dirs (-d).\n");
-		return 0;
+		goto cleanup;
 	}
 
 	if (missing_args == 3) /* simplify if both options were specified */
 		missing_args = 2;
 	if (refused_delete && (delete_mode || missing_args == 2)) {
 		create_refuse_error(refused_delete);
-		return 0;
+		goto cleanup;
 	}
 
 	if (remove_source_files) {
@@ -2209,7 +2241,7 @@ int parse_arguments(int *argc_p, const char ***argv_p)
 		 * options. */
 		if (refused_delete && am_sender) {
 			create_refuse_error(refused_delete);
-			return 0;
+			goto cleanup;
 		}
 		need_messages_from_generator = 1;
 	}
@@ -2263,7 +2295,7 @@ int parse_arguments(int *argc_p, const char ***argv_p)
 		snprintf(err_buf, sizeof err_buf,
 			"--suffix cannot contain slashes: %s\n",
 			backup_suffix);
-		return 0;
+		goto cleanup;
 	}
 	if (backup_dir) {
 		size_t len;
@@ -2276,7 +2308,7 @@ int parse_arguments(int *argc_p, const char ***argv_p)
 		if (len > sizeof backup_dir_buf - 128) {
 			snprintf(err_buf, sizeof err_buf,
 				"the --backup-dir path is WAY too long.\n");
-			return 0;
+			goto cleanup;
 		}
 		backup_dir_len = (int)len;
 		if (!backup_dir_len) {
@@ -2295,7 +2327,7 @@ int parse_arguments(int *argc_p, const char ***argv_p)
 			"--suffix cannot be empty %s\n", backup_dir_len < 0
 			? "when --backup-dir is the same as the dest dir"
 			: "without a --backup-dir");
-		return 0;
+		goto cleanup;
 	} else if (make_backups && delete_mode && !delete_excluded && !am_server) {
 		snprintf(backup_dir_buf, sizeof backup_dir_buf,
 			"P *%s", backup_suffix);
@@ -2323,7 +2355,7 @@ int parse_arguments(int *argc_p, const char ***argv_p)
 	if (do_progress && !am_server) {
 		if (!log_before_transfer && INFO_EQ(NAME, 0))
 			parse_output_words(info_words, info_levels, "name", DEFAULT_PRIORITY);
-		parse_output_words(info_words, info_levels, "flist2,progress", DEFAULT_PRIORITY);
+		parse_output_words(info_words, info_levels, "FLIST2,PROGRESS", DEFAULT_PRIORITY);
 	}
 
 	if (dry_run)
@@ -2364,11 +2396,11 @@ int parse_arguments(int *argc_p, const char ***argv_p)
 		if (whole_file > 0) {
 			snprintf(err_buf, sizeof err_buf,
 				 "--append cannot be used with --whole-file\n");
-			return 0;
+			goto cleanup;
 		}
 		if (refused_inplace) {
 			create_refuse_error(refused_inplace);
-			return 0;
+			goto cleanup;
 		}
 		inplace = 1;
 	}
@@ -2376,7 +2408,7 @@ int parse_arguments(int *argc_p, const char ***argv_p)
 	if (write_devices) {
 		if (refused_inplace) {
 			create_refuse_error(refused_inplace);
-			return 0;
+			goto cleanup;
 		}
 		inplace = 1;
 	}
@@ -2391,13 +2423,13 @@ int parse_arguments(int *argc_p, const char ***argv_p)
 				 "--%s cannot be used with --%s\n",
 				 append_mode ? "append" : "inplace",
 				 delay_updates ? "delay-updates" : "partial-dir");
-			return 0;
+			goto cleanup;
 		}
 		/* --inplace implies --partial for refusal purposes, but we
 		 * clear the keep_partial flag for internal logic purposes. */
 		if (refused_partial) {
 			create_refuse_error(refused_partial);
-			return 0;
+			goto cleanup;
 		}
 		keep_partial = 0;
 #else
@@ -2405,7 +2437,7 @@ int parse_arguments(int *argc_p, const char ***argv_p)
 			 "--%s is not supported on this %s\n",
 			 append_mode ? "append" : "inplace",
 			 am_server ? "server" : "client");
-		return 0;
+		goto cleanup;
 #endif
 	} else {
 		if (keep_partial && !partial_dir && !am_server) {
@@ -2419,7 +2451,7 @@ int parse_arguments(int *argc_p, const char ***argv_p)
 				partial_dir = NULL;
 			if (!partial_dir && refused_partial) {
 				create_refuse_error(refused_partial);
-				return 0;
+				goto cleanup;
 			}
 			keep_partial = 1;
 		}
@@ -2440,14 +2472,14 @@ int parse_arguments(int *argc_p, const char ***argv_p)
 			if (am_server) {
 				snprintf(err_buf, sizeof err_buf,
 					"The --files-from sent to the server cannot specify a host.\n");
-				return 0;
+				goto cleanup;
 			}
 			files_from = p;
 			filesfrom_host = h;
 			if (strcmp(files_from, "-") == 0) {
 				snprintf(err_buf, sizeof err_buf,
 					"Invalid --files-from remote filename\n");
-				return 0;
+				goto cleanup;
 			}
 		} else {
 			if (sanitize_paths)
@@ -2466,7 +2498,7 @@ int parse_arguments(int *argc_p, const char ***argv_p)
 				snprintf(err_buf, sizeof err_buf,
 					"failed to open files-from file %s: %s\n",
 					files_from, strerror(errno));
-				return 0;
+				goto cleanup;
 			}
 		}
 	}
@@ -2483,6 +2515,9 @@ int parse_arguments(int *argc_p, const char ***argv_p)
   options_rejected:
 	snprintf(err_buf, sizeof err_buf,
 		"Your options have been rejected by the server.\n");
+  cleanup:
+	if (pc)
+		poptFreeContext(pc);
 	return 0;
 }
 
@@ -2498,7 +2533,7 @@ static char SPLIT_ARG_WHEN_OLD[1];
  **/
 char *safe_arg(const char *opt, const char *arg)
 {
-#define SHELL_CHARS "!#$&;|<>(){}\"' \t\\"
+#define SHELL_CHARS "!#$&;|<>(){}\"'` \t\\"
 #define WILD_CHARS  "*?[]" /* We don't allow remote brace expansion */
 	BOOL is_filename_arg = !opt;
 	char *escapes = is_filename_arg ? SHELL_CHARS : WILD_CHARS SHELL_CHARS;
@@ -2510,7 +2545,7 @@ char *safe_arg(const char *opt, const char *arg)
 	char *ret;
 	if (!protect_args && old_style_args < 2 && (!old_style_args || (!is_filename_arg && opt != SPLIT_ARG_WHEN_OLD))) {
 		const char *f;
-		if (!trust_sender_args && *arg == '~'
+		if (*arg == '~' && is_filename_arg && !am_sender && !trust_sender_args
 		 && ((relative_paths && !strstr(arg, "/./"))
 		  || !strchr(arg, '/'))) {
 			extras++;
@@ -2541,7 +2576,7 @@ char *safe_arg(const char *opt, const char *arg)
 		if (escape_leading_tilde)
 			*t++ = '\\';
 		while (*f) {
-                        if (*f == '\\') {
+			if (*f == '\\') {
 				if (!is_filename_arg || !strchr(WILD_CHARS, f[1]))
 					*t++ = '\\';
 			} else if (strchr(escapes, *f))

packaging/auto-Makefile

@@ -1,4 +1,4 @@
-TARGETS := all install install-ssl-daemon install-all install-strip conf gen gensend reconfigure restatus \
+TARGETS := all install install-ssl-daemon install-all install-strip conf gen reconfigure restatus \
 	proto man clean cleantests distclean test check check29 check30 installcheck splint \
 	doxygen doxygen-upload finddead rrsync
 

packaging/branch-from-patch

@@ -154,7 +154,7 @@ def create_branch(patch):
         s = cmd_run(['git', 'commit', '-a', '-m', f"Creating branch from {patch.name}.diff."])
         if not s.returncode:
             break
-        s = cmd_run(['/bin/zsh'])
+        s = cmd_run([os.environ.get('SHELL', '/bin/sh')])
         if s.returncode:
             die('Aborting due to shell error code')
 

packaging/lsb/rsync.spec

@@ -1,9 +1,9 @@
 Summary: A fast, versatile, remote (and local) file-copying tool
 Name: rsync
-Version: 3.2.7
-%define fullversion %{version}pre1
-Release: 0.1.pre1
-%define srcdir src-previews
+Version: 3.4.1
+%define fullversion %{version}
+Release: 1
+%define srcdir src
 Group: Applications/Internet
 License: GPL
 Source0: https://rsync.samba.org/ftp/rsync/%{srcdir}/rsync-%{fullversion}.tar.gz
@@ -79,9 +79,5 @@ rm -rf $RPM_BUILD_ROOT
 %dir /etc/rsync-ssl/certs
 
 %changelog
-* Fri Sep 30 2022 Wayne Davison <wayne@opencoder.net>
-Released 3.2.7pre1.
-
-* Fri Mar 21 2008 Wayne Davison <wayne@opencoder.net>
-Added installation of /etc/xinetd.d/rsync file and some commented-out
-lines that demonstrate how to use the rsync-patches tar file.
+* Thu Jan 16 2025 Rsync Project <rsync.project@gmail.com>
+Released 3.4.1.

packaging/pkglib.py

@@ -170,17 +170,6 @@ def get_patch_branches(base_branch):
     return branches
 
 
-def mandate_gensend_hook():
-    hook = '.git/hooks/pre-push'
-    if not os.path.exists(hook):
-        print('Creating hook file:', hook)
-        cmd_chk(['./rsync', '-a', 'packaging/pre-push', hook])
-    else:
-        ct = cmd_txt(['fgrep', 'make gensend', hook], discard='output')
-        if ct.rc:
-            die('Please add a "make gensend" into your', hook, 'script.')
-
-
 # Snag the GENFILES values out of the Makefile file and return them as a list.
 def get_gen_files(want_dir_plus_list=False):
     cont_re = re.compile(r'\\\n')

packaging/pre-push

@@ -1,16 +0,0 @@
-#!/bin/bash -e
-
-cat >/dev/null # Just discard stdin data
-
-if [[ -f /proc/$PPID/cmdline ]]; then
-    while read -d $'\0' arg ; do
-	if [[ "$arg" == '--tags' ]] ; then
-	    exit 0
-	fi
-    done </proc/$PPID/cmdline
-fi
-
-branch=`git rev-parse --abbrev-ref HEAD`
-if [[ "$branch" = master && "$*" == *github* ]]; then
-    make gensend
-fi

packaging/release-rsync

@@ -3,7 +3,24 @@
 # This script expects the directory ~/samba-rsync-ftp to exist and to be a
 # copy of the /home/ftp/pub/rsync dir on samba.org.  When the script is done,
 # the git repository in the current directory will be updated, and the local
-# ~/samba-rsync-ftp dir will be ready to be rsynced to samba.org.
+# ~/samba-rsync-ftp dir will be ready to be rsynced to samba.org. See the
+# script samba-rsync for an easy way to initialize the local ftp copy and to
+# thereafter update the remote files from your local copy.
+
+# This script also expects to be able to gpg sign the resulting tar files
+# using your default gpg key. Make sure that the html download.html file
+# has a link to the relevant keys that are authorized to sign the tar files
+# and also make sure that the following commands work as expected:
+#
+#   touch TeMp
+#   gpg --sign TeMp
+#   gpg --verify TeMp.gpg
+#   gpg --sign TeMp
+#   rm TeMp*
+#
+# The second time you sign the file it should NOT prompt you for your password
+# (unless the timeout period has passed).  It will prompt about overriding the
+# existing TeMp.gpg file, though.
 
 import os, sys, re, argparse, glob, shutil, signal
 from datetime import datetime
@@ -27,8 +44,6 @@ def main():
     ztoday = now.strftime('%d %b %Y')
     today = ztoday.lstrip('0')
 
-    mandate_gensend_hook()
-
     curdir = os.getcwd()
 
     signal.signal(signal.SIGINT, signal_handler)
@@ -187,7 +202,7 @@ About to:
         '%define srcdir': srcdir,
         }
 
-    tweak_files = 'version.h rsync.h NEWS.md'.split()
+    tweak_files = 'version.h rsync.h'.split()
     tweak_files += glob.glob('packaging/*.spec')
     tweak_files += glob.glob('packaging/*/*.spec')
 
@@ -256,7 +271,7 @@ About to:
 """)
     ans = input("<Press Enter OR 'y' to continue> ")
 
-    s = cmd_run(['git', 'commit', '-a', '-m', f'Preparing for release of {version}'])
+    s = cmd_run(['git', 'commit', '-a', '-m', f'Preparing for release of {version} [buildall]'])
     if s.returncode:
         die('Aborting')
 

packaging/samba-rsync

@@ -0,0 +1,124 @@
+#!/bin/bash
+# This script makes it easy to update the ftp & html directories on the samba.org server.
+# It expects the 2 *_DEST directories to contain updated files that need to be sent to
+# the remote server. If these directories don't exist yet, they will be copied from the
+# remote server (while also making the html dir a git checkout).
+
+FTP_SRC="$HOME/samba-rsync-ftp"
+HTML_SRC="$HOME/samba-rsync-html"
+
+FTP_DEST="/home/ftp/pub/rsync"
+HTML_DEST="/home/httpd/html/rsync"
+
+HTML_GIT='git.samba.org:/data/git/rsync-web.git'
+
+export RSYNC_PARTIAL_DIR=''
+
+case "$RSYNC_SAMBA_HOST" in
+    *.samba.org) ;;
+    *)
+	echo "You must set RSYNC_SAMBA_HOST in your environment to the samba hostname to use." >&2
+	exit 1
+	;;
+esac
+
+MODE=''
+REVERSE=''
+while (( $# )); do
+    case "$1" in
+	-R|--reverse) REVERSE=yes ;;
+	f|ftp) MODE=ftp ;;
+	h|html) MODE=html ;;
+	-h|--help)
+	    echo "Usage: [-R] [f|ftp|h|html]"
+	    echo "-R --reverse  Copy the files from the server to the local host."
+	    echo "              The default is to update the remote files."
+	    echo "-h --help     Output this help message."
+	    echo " "
+	    echo "The script will prompt if ftp or html is not specified on the command line."
+	    echo "Only one category can be copied at a time. When pulling html files, a git"
+	    echo "checkout will be either created or updated prior to the rsync copy."
+	    exit
+	    ;;
+	*)
+	    echo "Invalid option: $1" >&2
+	    exit 1
+	    ;;
+    esac
+    shift
+done
+
+while [ ! "$MODE" ]; do
+    if [ "$REVERSE" = yes ]; then
+	DIRECTION=FROM
+    else
+	DIRECTION=TO
+    fi
+    echo -n "Copy which files $DIRECTION the server? ftp or html? "
+    read ans
+    case "$ans" in
+	f*) MODE=ftp ;;
+	h*) MODE=html ;;
+	'') exit 1 ;;
+	*) echo "You must answer f or h to copy the ftp or html data." ;;
+    esac
+done
+
+if [ "$MODE" = ftp ]; then
+    SRC_DIR="$FTP_SRC"
+    DEST_DIR="$FTP_DEST"
+    FILT=".filt"
+else
+    SRC_DIR="$HTML_SRC"
+    DEST_DIR="$HTML_DEST"
+    FILT="filt"
+fi
+
+function do_rsync {
+    rsync --dry-run "${@}" | grep -v 'is uptodate$'
+    echo ''
+    echo -n "Run without --dry-run? [n] "
+    read ans
+    case "$ans" in
+	y*) rsync "${@}" | grep -v 'is uptodate$' ;;
+    esac
+}
+
+if [ -d "$SRC_DIR" ]; then
+    REVERSE_RSYNC=do_rsync
+else
+    echo "The directory $SRC_DIR does not exist yet."
+    echo -n "Do you want to create it? [n] "
+    read ans
+    case "$ans" in
+	y*) ;;
+	*) exit 1 ;;
+    esac
+    REVERSE=yes
+    REVERSE_RSYNC=rsync
+fi
+
+if [ "$REVERSE" = yes ]; then
+    OPTS='-aivOHP'
+    TMP_FILT="$SRC_DIR/tmp-filt"
+    echo "Copying files from $RSYNC_SAMBA_HOST to $SRC_DIR ..."
+    if [ "$MODE" = html ]; then
+	if [ $REVERSE_RSYNC = rsync ]; then
+	    git clone "$HTML_GIT" "$SRC_DIR" || exit 1
+	else
+	    cd "$SRC_DIR" || exit 1
+	    git pull || exit 1
+	fi
+	sed -n -e 's/[-P]/H/p' "$SRC_DIR/$FILT" >"$TMP_FILT"
+	OPTS="${OPTS}f._$TMP_FILT"
+    else
+	OPTS="${OPTS}f:_$FILT"
+    fi
+    $REVERSE_RSYNC "$OPTS" "$RSYNC_SAMBA_HOST:$DEST_DIR/" "$SRC_DIR/"
+    rm -f "$TMP_FILT"
+    exit
+fi
+
+cd "$SRC_DIR" || exit 1
+echo "Copying files from $SRC_DIR to $RSYNC_SAMBA_HOST ..."
+do_rsync -aivOHP --chown=:rsync --del -f._$FILT . "$RSYNC_SAMBA_HOST:$DEST_DIR/"

packaging/send-news

@@ -0,0 +1,33 @@
+#!/bin/bash -e
+
+# This script expects the ~/src/rsync directory to contain the rsync
+# source that has been updated. It also expects the auto-build-save
+# directory to have been created prior to the running of configure so
+# that each branch has its own build directory underneath. This supports
+# the maintainer workflow for the rsync-patches files maintenace.
+
+FTP_SRC="$HOME/samba-rsync-ftp"
+FTP_DEST="/home/ftp/pub/rsync"
+MD_FILES="README.md INSTALL.md NEWS.md"
+
+case "$RSYNC_SAMBA_HOST" in
+    *.samba.org) ;;
+    *)
+	echo "You must set RSYNC_SAMBA_HOST in your environment to the samba hostname to use." >&2
+	exit 1
+	;;
+esac
+
+if [ ! -d "$FTP_SRC" ]; then
+    packaging/samba-rsync ftp # Ask to initialize the local ftp dir
+fi
+
+cd ~/src/rsync
+
+make man
+./md-convert --dest="$FTP_SRC" $MD_FILES
+rsync -aiic $MD_FILES auto-build-save/master/*.?.html "$FTP_SRC"
+
+cd "$FTP_SRC"
+
+rsync -aiic README.* INSTALL.* NEWS.* *.?.html "$RSYNC_SAMBA_HOST:$FTP_DEST/"

packaging/var-checker

@@ -6,9 +6,10 @@
 
 import os, sys, re, argparse, glob
 
-VARS_RE = re.compile(r'^(?!(?:extern|enum)\s)([a-zA-Z]\S*\s+.*);', re.M)
+VARS_RE = re.compile(r'^(?!(?:extern|enum)\s)([a-zA-Z][^ \n\t:]*\s+.*);', re.M)
 EXTERNS_RE = re.compile(r'^extern\s+(.*);', re.M)
 
+types = { }
 sizes = { }
 
 def main():
@@ -68,19 +69,44 @@ def parse_vars(fn, lines):
     for line in lines:
         line = re.sub(r'\s*\{.*\}', '', line)
         line = re.sub(r'\s*\(.*\)', '', line)
-        for item in re.split(r'\s*,\s*', line):
-            item = re.sub(r'\s*=.*', '', item)
-            m = re.search(r'(?P<var>\w+)(?P<sz>\[.*?\])?$', item)
+        line = re.sub(r'\s*=\s*[^,]*', '', line)
+        m = re.search(r'^(?:(?:static|extern)\s+)?(?P<type>[^\[,]+?)(?P<vars>\w+([\[,].+)?)$', line)
+        if not m:
+            print(f"Bogus match? ({line})")
+            continue
+        items = m['vars']
+        main_type = m['type'].strip()
+        mt_len = len(main_type)
+        main_type = main_type.rstrip('*')
+        first_stars = '*' * (mt_len - len(main_type))
+        if first_stars:
+            main_type = main_type.rstrip()
+            items = first_stars + items
+        for item in re.split(r'\s*,\s*', items):
+            m = re.search(r'(?P<stars>\*+\s*)?(?P<var>\w+)(?P<sz>\[.*?\])?$', item)
             if not m:
                 print(f"Bogus match? ({item})")
                 continue
-            if m['sz']:
-                if m['var'] in sizes:
-                    if sizes[m['var']] != m['sz']:
+            typ = main_type
+            if m['stars']:
+                typ = typ + m['stars'].strip()
+            chk = [
+                    'type', typ, types,
+                    'size', m['sz'], sizes,
+                    ]
+            while chk:
+                label = chk.pop(0)
+                new = chk.pop(0)
+                lst = chk.pop(0)
+                if label == 'type':
+                    new = ' '.join(new.split()).replace(' *', '*')
+                if m['var'] in lst:
+                    old = lst[m['var']]
+                    if new != old:
                         var = m['var']
-                        print(fn, f'has inconsistent size for "{var}":', m['sz'], 'vs', sizes[var])
+                        print(fn, f'has inconsistent {label} for "{var}":', new, 'vs', old)
                 else:
-                    sizes[m['var']] = m['sz']
+                    lst[m['var']] = new
             ret.append(m['var'])
     return ret
 

popt/findme.c

@@ -25,12 +25,15 @@ const char * findProgramPath(const char * argv0)
     if (path == NULL) return NULL;
 
     bufsize = strlen(path) + 1;
-    start = pathbuf = alloca(bufsize);
+    start = pathbuf = malloc(bufsize);
     if (pathbuf == NULL) return NULL;	/* XXX can't happen */
     strlcpy(pathbuf, path, bufsize);
     bufsize += sizeof "/" - 1 + strlen(argv0);
     buf = malloc(bufsize);
-    if (buf == NULL) return NULL;	/* XXX can't happen */
+    if (buf == NULL) {
+	    free(pathbuf);
+	    return NULL;	/* XXX can't happen */
+    }
 
     chptr = NULL;
     /*@-branchstate@*/
@@ -39,8 +42,10 @@ const char * findProgramPath(const char * argv0)
 	    *chptr = '\0';
 	snprintf(buf, bufsize, "%s/%s", start, argv0);
 
-	if (!access(buf, X_OK))
+	if (!access(buf, X_OK)) {
+	    free(pathbuf);
 	    return buf;
+	}
 
 	if (chptr) 
 	    start = chptr + 1;
@@ -49,6 +54,7 @@ const char * findProgramPath(const char * argv0)
     } while (start && *start);
     /*@=branchstate@*/
 
+    free(pathbuf);
     free(buf);
 
     return NULL;

popt/lookup3.c

@@ -0,0 +1,959 @@
+/* -------------------------------------------------------------------- */
+/*
+ * lookup3.c, by Bob Jenkins, May 2006, Public Domain.
+ * 
+ * These are functions for producing 32-bit hashes for hash table lookup.
+ * jlu32w(), jlu32l(), jlu32lpair(), jlu32b(), _JLU3_MIX(), and _JLU3_FINAL() 
+ * are externally useful functions.  Routines to test the hash are included 
+ * if SELF_TEST is defined.  You can use this free for any purpose.  It's in
+ * the public domain.  It has no warranty.
+ * 
+ * You probably want to use jlu32l().  jlu32l() and jlu32b()
+ * hash byte arrays.  jlu32l() is is faster than jlu32b() on
+ * little-endian machines.  Intel and AMD are little-endian machines.
+ * On second thought, you probably want jlu32lpair(), which is identical to
+ * jlu32l() except it returns two 32-bit hashes for the price of one.  
+ * You could implement jlu32bpair() if you wanted but I haven't bothered here.
+ * 
+ * If you want to find a hash of, say, exactly 7 integers, do
+ *   a = i1;  b = i2;  c = i3;
+ *   _JLU3_MIX(a,b,c);
+ *   a += i4; b += i5; c += i6;
+ *   _JLU3_MIX(a,b,c);
+ *   a += i7;
+ *   _JLU3_FINAL(a,b,c);
+ * then use c as the hash value.  If you have a variable size array of
+ * 4-byte integers to hash, use jlu32w().  If you have a byte array (like
+ * a character string), use jlu32l().  If you have several byte arrays, or
+ * a mix of things, see the comments above jlu32l().  
+ * 
+ * Why is this so big?  I read 12 bytes at a time into 3 4-byte integers, 
+ * then mix those integers.  This is fast (you can do a lot more thorough
+ * mixing with 12*3 instructions on 3 integers than you can with 3 instructions
+ * on 1 byte), but shoehorning those bytes into integers efficiently is messy.
+*/
+/* -------------------------------------------------------------------- */
+
+#include <stdint.h>
+
+#if defined(_JLU3_SELFTEST)
+# define _JLU3_jlu32w		1
+# define _JLU3_jlu32l		1
+# define _JLU3_jlu32lpair	1
+# define _JLU3_jlu32b		1
+#endif
+
+static const union _dbswap {
+    const uint32_t ui;
+    const unsigned char uc[4];
+} endian = { .ui = 0x11223344 };
+# define HASH_LITTLE_ENDIAN	(endian.uc[0] == (unsigned char) 0x44)
+# define HASH_BIG_ENDIAN	(endian.uc[0] == (unsigned char) 0x11)
+
+#ifndef ROTL32
+# define ROTL32(x, s) (((x) << (s)) | ((x) >> (32 - (s))))
+#endif
+
+/* NOTE: The _size parameter should be in bytes. */
+#define	_JLU3_INIT(_h, _size)	(0xdeadbeef + ((uint32_t)(_size)) + (_h))
+
+/* -------------------------------------------------------------------- */
+/*
+ * _JLU3_MIX -- mix 3 32-bit values reversibly.
+ * 
+ * This is reversible, so any information in (a,b,c) before _JLU3_MIX() is
+ * still in (a,b,c) after _JLU3_MIX().
+ * 
+ * If four pairs of (a,b,c) inputs are run through _JLU3_MIX(), or through
+ * _JLU3_MIX() in reverse, there are at least 32 bits of the output that
+ * are sometimes the same for one pair and different for another pair.
+ * This was tested for:
+ * * pairs that differed by one bit, by two bits, in any combination
+ *   of top bits of (a,b,c), or in any combination of bottom bits of
+ *   (a,b,c).
+ * * "differ" is defined as +, -, ^, or ~^.  For + and -, I transformed
+ *   the output delta to a Gray code (a^(a>>1)) so a string of 1's (as
+ *   is commonly produced by subtraction) look like a single 1-bit
+ *   difference.
+ * * the base values were pseudorandom, all zero but one bit set, or 
+ *   all zero plus a counter that starts at zero.
+ * 
+ * Some k values for my "a-=c; a^=ROTL32(c,k); c+=b;" arrangement that
+ * satisfy this are
+ *     4  6  8 16 19  4
+ *     9 15  3 18 27 15
+ *    14  9  3  7 17  3
+ * Well, "9 15 3 18 27 15" didn't quite get 32 bits diffing
+ * for "differ" defined as + with a one-bit base and a two-bit delta.  I
+ * used http://burtleburtle.net/bob/hash/avalanche.html to choose 
+ * the operations, constants, and arrangements of the variables.
+ * 
+ * This does not achieve avalanche.  There are input bits of (a,b,c)
+ * that fail to affect some output bits of (a,b,c), especially of a.  The
+ * most thoroughly mixed value is c, but it doesn't really even achieve
+ * avalanche in c.
+ * 
+ * This allows some parallelism.  Read-after-writes are good at doubling
+ * the number of bits affected, so the goal of mixing pulls in the opposite
+ * direction as the goal of parallelism.  I did what I could.  Rotates
+ * seem to cost as much as shifts on every machine I could lay my hands
+ * on, and rotates are much kinder to the top and bottom bits, so I used
+ * rotates.
+ */
+/* -------------------------------------------------------------------- */
+#define _JLU3_MIX(a,b,c) \
+{ \
+  a -= c;  a ^= ROTL32(c, 4);  c += b; \
+  b -= a;  b ^= ROTL32(a, 6);  a += c; \
+  c -= b;  c ^= ROTL32(b, 8);  b += a; \
+  a -= c;  a ^= ROTL32(c,16);  c += b; \
+  b -= a;  b ^= ROTL32(a,19);  a += c; \
+  c -= b;  c ^= ROTL32(b, 4);  b += a; \
+}
+
+/* -------------------------------------------------------------------- */
+/**
+ * _JLU3_FINAL -- final mixing of 3 32-bit values (a,b,c) into c
+ * 
+ * Pairs of (a,b,c) values differing in only a few bits will usually
+ * produce values of c that look totally different.  This was tested for
+ * * pairs that differed by one bit, by two bits, in any combination
+ *   of top bits of (a,b,c), or in any combination of bottom bits of
+ *   (a,b,c).
+ * * "differ" is defined as +, -, ^, or ~^.  For + and -, I transformed
+ *   the output delta to a Gray code (a^(a>>1)) so a string of 1's (as
+ *   is commonly produced by subtraction) look like a single 1-bit
+ *   difference.
+ * * the base values were pseudorandom, all zero but one bit set, or 
+ *   all zero plus a counter that starts at zero.
+ * 
+ * These constants passed:
+ *  14 11 25 16 4 14 24
+ *  12 14 25 16 4 14 24
+ * and these came close:
+ *   4  8 15 26 3 22 24
+ *  10  8 15 26 3 22 24
+ *  11  8 15 26 3 22 24
+ */
+/* -------------------------------------------------------------------- */
+#define _JLU3_FINAL(a,b,c) \
+{ \
+  c ^= b; c -= ROTL32(b,14); \
+  a ^= c; a -= ROTL32(c,11); \
+  b ^= a; b -= ROTL32(a,25); \
+  c ^= b; c -= ROTL32(b,16); \
+  a ^= c; a -= ROTL32(c,4);  \
+  b ^= a; b -= ROTL32(a,14); \
+  c ^= b; c -= ROTL32(b,24); \
+}
+
+#if defined(_JLU3_jlu32w)
+uint32_t jlu32w(uint32_t h, const uint32_t *k, size_t size);
+/* -------------------------------------------------------------------- */
+/**
+ *  This works on all machines.  To be useful, it requires
+ *  -- that the key be an array of uint32_t's, and
+ *  -- that the size be the number of uint32_t's in the key
+ * 
+ *  The function jlu32w() is identical to jlu32l() on little-endian
+ *  machines, and identical to jlu32b() on big-endian machines,
+ *  except that the size has to be measured in uint32_ts rather than in
+ *  bytes.  jlu32l() is more complicated than jlu32w() only because
+ *  jlu32l() has to dance around fitting the key bytes into registers.
+ *
+ * @param h		the previous hash, or an arbitrary value
+ * @param *k		the key, an array of uint32_t values
+ * @param size		the size of the key, in uint32_ts
+ * @return		the lookup3 hash
+ */
+/* -------------------------------------------------------------------- */
+uint32_t jlu32w(uint32_t h, const uint32_t *k, size_t size)
+{
+    uint32_t a = _JLU3_INIT(h, (size * sizeof(*k)));
+    uint32_t b = a;
+    uint32_t c = a;
+
+    if (k == NULL)
+	goto exit;
+
+    /*----------------------------------------------- handle most of the key */
+    while (size > 3) {
+	a += k[0];
+	b += k[1];
+	c += k[2];
+	_JLU3_MIX(a,b,c);
+	size -= 3;
+	k += 3;
+    }
+
+    /*----------------------------------------- handle the last 3 uint32_t's */
+    switch (size) {
+    case 3 : c+=k[2];
+    case 2 : b+=k[1];
+    case 1 : a+=k[0];
+	_JLU3_FINAL(a,b,c);
+	/* fallthrough */
+    case 0:
+	break;
+    }
+    /*---------------------------------------------------- report the result */
+exit:
+    return c;
+}
+#endif	/* defined(_JLU3_jlu32w) */
+
+#if defined(_JLU3_jlu32l)
+uint32_t jlu32l(uint32_t h, const void *key, size_t size);
+/* -------------------------------------------------------------------- */
+/*
+ * jlu32l() -- hash a variable-length key into a 32-bit value
+ *   h       : can be any 4-byte value
+ *   k       : the key (the unaligned variable-length array of bytes)
+ *   size    : the size of the key, counting by bytes
+ * Returns a 32-bit value.  Every bit of the key affects every bit of
+ * the return value.  Two keys differing by one or two bits will have
+ * totally different hash values.
+ * 
+ * The best hash table sizes are powers of 2.  There is no need to do
+ * mod a prime (mod is sooo slow!).  If you need less than 32 bits,
+ * use a bitmask.  For example, if you need only 10 bits, do
+ *   h = (h & hashmask(10));
+ * In which case, the hash table should have hashsize(10) elements.
+ * 
+ * If you are hashing n strings (uint8_t **)k, do it like this:
+ *   for (i=0, h=0; i<n; ++i) h = jlu32l(h, k[i], len[i]);
+ * 
+ * By Bob Jenkins, 2006.  bob_jenkins@burtleburtle.net.  You may use this
+ * code any way you wish, private, educational, or commercial.  It's free.
+ * 
+ * Use for hash table lookup, or anything where one collision in 2^^32 is
+ * acceptable.  Do NOT use for cryptographic purposes.
+ *
+ * @param h		the previous hash, or an arbitrary value
+ * @param *k		the key, an array of uint8_t values
+ * @param size		the size of the key
+ * @return		the lookup3 hash
+ */
+/* -------------------------------------------------------------------- */
+uint32_t jlu32l(uint32_t h, const void *key, size_t size)
+{
+    union { const void *ptr; size_t i; } u;
+    uint32_t a = _JLU3_INIT(h, size);
+    uint32_t b = a;
+    uint32_t c = a;
+
+    if (key == NULL)
+	goto exit;
+
+    u.ptr = key;
+    if (HASH_LITTLE_ENDIAN && ((u.i & 0x3) == 0)) {
+	const uint32_t *k = (const uint32_t *)key;	/* read 32-bit chunks */
+#ifdef	VALGRIND
+	const uint8_t  *k8;
+#endif
+
+    /*------ all but last block: aligned reads and affect 32 bits of (a,b,c) */
+	while (size > 12) {
+	    a += k[0];
+	    b += k[1];
+	    c += k[2];
+	    _JLU3_MIX(a,b,c);
+	    size -= 12;
+	    k += 3;
+	}
+
+	/*------------------------- handle the last (probably partial) block */
+	/* 
+	 * "k[2]&0xffffff" actually reads beyond the end of the string, but
+	 * then masks off the part it's not allowed to read.  Because the
+	 * string is aligned, the masked-off tail is in the same word as the
+	 * rest of the string.  Every machine with memory protection I've seen
+	 * does it on word boundaries, so is OK with this.  But VALGRIND will
+	 * still catch it and complain.  The masking trick does make the hash
+	 * noticeably faster for short strings (like English words).
+	 */
+#ifndef VALGRIND
+
+	switch (size) {
+	case 12:	c += k[2]; b+=k[1]; a+=k[0]; break;
+	case 11:	c += k[2]&0xffffff; b+=k[1]; a+=k[0]; break;
+	case 10:	c += k[2]&0xffff; b+=k[1]; a+=k[0]; break;
+	case  9:	c += k[2]&0xff; b+=k[1]; a+=k[0]; break;
+	case  8:	b += k[1]; a+=k[0]; break;
+	case  7:	b += k[1]&0xffffff; a+=k[0]; break;
+	case  6:	b += k[1]&0xffff; a+=k[0]; break;
+	case  5:	b += k[1]&0xff; a+=k[0]; break;
+	case  4:	a += k[0]; break;
+	case  3:	a += k[0]&0xffffff; break;
+	case  2:	a += k[0]&0xffff; break;
+	case  1:	a += k[0]&0xff; break;
+	case  0:	goto exit;
+	}
+
+#else /* make valgrind happy */
+
+	k8 = (const uint8_t *)k;
+	switch (size) {
+	case 12:	c += k[2]; b+=k[1]; a+=k[0]	break;
+	case 11:	c += ((uint32_t)k8[10])<<16;	/* fallthrough */
+	case 10:	c += ((uint32_t)k8[9])<<8;	/* fallthrough */
+	case  9:	c += k8[8];			/* fallthrough */
+	case  8:	b += k[1]; a+=k[0];		break;
+	case  7:	b += ((uint32_t)k8[6])<<16;	/* fallthrough */
+	case  6:	b += ((uint32_t)k8[5])<<8;	/* fallthrough */
+	case  5:	b += k8[4];			/* fallthrough */
+	case  4:	a += k[0];			break;
+	case  3:	a += ((uint32_t)k8[2])<<16;	/* fallthrough */
+	case  2:	a += ((uint32_t)k8[1])<<8;	/* fallthrough */
+	case  1:	a += k8[0];			break;
+	case  0:	goto exit;
+	}
+
+#endif /* !valgrind */
+
+    } else if (HASH_LITTLE_ENDIAN && ((u.i & 0x1) == 0)) {
+	const uint16_t *k = (const uint16_t *)key;	/* read 16-bit chunks */
+	const uint8_t  *k8;
+
+	/*----------- all but last block: aligned reads and different mixing */
+	while (size > 12) {
+	    a += k[0] + (((uint32_t)k[1])<<16);
+	    b += k[2] + (((uint32_t)k[3])<<16);
+	    c += k[4] + (((uint32_t)k[5])<<16);
+	    _JLU3_MIX(a,b,c);
+	    size -= 12;
+	    k += 6;
+	}
+
+	/*------------------------- handle the last (probably partial) block */
+	k8 = (const uint8_t *)k;
+	switch (size) {
+	case 12:
+	    c += k[4]+(((uint32_t)k[5])<<16);
+	    b += k[2]+(((uint32_t)k[3])<<16);
+	    a += k[0]+(((uint32_t)k[1])<<16);
+	    break;
+	case 11:
+	    c += ((uint32_t)k8[10])<<16;
+	    /* fallthrough */
+	case 10:
+	    c += (uint32_t)k[4];
+	    b += k[2]+(((uint32_t)k[3])<<16);
+	    a += k[0]+(((uint32_t)k[1])<<16);
+	    break;
+	case  9:
+	    c += (uint32_t)k8[8];
+	    /* fallthrough */
+	case  8:
+	    b += k[2]+(((uint32_t)k[3])<<16);
+	    a += k[0]+(((uint32_t)k[1])<<16);
+	    break;
+	case  7:
+	    b += ((uint32_t)k8[6])<<16;
+	    /* fallthrough */
+	case  6:
+	    b += (uint32_t)k[2];
+	    a += k[0]+(((uint32_t)k[1])<<16);
+	    break;
+	case  5:
+	    b += (uint32_t)k8[4];
+	    /* fallthrough */
+	case  4:
+	    a += k[0]+(((uint32_t)k[1])<<16);
+	    break;
+	case  3:
+	    a += ((uint32_t)k8[2])<<16;
+	    /* fallthrough */
+	case  2:
+	    a += (uint32_t)k[0];
+	    break;
+	case  1:
+	    a += (uint32_t)k8[0];
+	    break;
+	case  0:
+	    goto exit;
+	}
+
+    } else {		/* need to read the key one byte at a time */
+	const uint8_t *k = (const uint8_t *)key;
+
+	/*----------- all but the last block: affect some 32 bits of (a,b,c) */
+	while (size > 12) {
+	    a += (uint32_t)k[0];
+	    a += ((uint32_t)k[1])<<8;
+	    a += ((uint32_t)k[2])<<16;
+	    a += ((uint32_t)k[3])<<24;
+	    b += (uint32_t)k[4];
+	    b += ((uint32_t)k[5])<<8;
+	    b += ((uint32_t)k[6])<<16;
+	    b += ((uint32_t)k[7])<<24;
+	    c += (uint32_t)k[8];
+	    c += ((uint32_t)k[9])<<8;
+	    c += ((uint32_t)k[10])<<16;
+	    c += ((uint32_t)k[11])<<24;
+	    _JLU3_MIX(a,b,c);
+	    size -= 12;
+	    k += 12;
+	}
+
+	/*---------------------------- last block: affect all 32 bits of (c) */
+	switch (size) {
+	case 12:	c += ((uint32_t)k[11])<<24;	/* fallthrough */
+	case 11:	c += ((uint32_t)k[10])<<16;	/* fallthrough */
+	case 10:	c += ((uint32_t)k[9])<<8;	/* fallthrough */
+	case  9:	c += (uint32_t)k[8];		/* fallthrough */
+	case  8:	b += ((uint32_t)k[7])<<24;	/* fallthrough */
+	case  7:	b += ((uint32_t)k[6])<<16;	/* fallthrough */
+	case  6:	b += ((uint32_t)k[5])<<8;	/* fallthrough */
+	case  5:	b += (uint32_t)k[4];		/* fallthrough */
+	case  4:	a += ((uint32_t)k[3])<<24;	/* fallthrough */
+	case  3:	a += ((uint32_t)k[2])<<16;	/* fallthrough */
+	case  2:	a += ((uint32_t)k[1])<<8;	/* fallthrough */
+	case  1:	a += (uint32_t)k[0];
+	    break;
+	case  0:
+	    goto exit;
+	}
+    }
+
+    _JLU3_FINAL(a,b,c);
+
+exit:
+    return c;
+}
+#endif	/* defined(_JLU3_jlu32l) */
+
+#if defined(_JLU3_jlu32lpair)
+/**
+ * jlu32lpair: return 2 32-bit hash values.
+ *
+ * This is identical to jlu32l(), except it returns two 32-bit hash
+ * values instead of just one.  This is good enough for hash table
+ * lookup with 2^^64 buckets, or if you want a second hash if you're not
+ * happy with the first, or if you want a probably-unique 64-bit ID for
+ * the key.  *pc is better mixed than *pb, so use *pc first.  If you want
+ * a 64-bit value do something like "*pc + (((uint64_t)*pb)<<32)".
+ *
+ * @param h		the previous hash, or an arbitrary value
+ * @param *key		the key, an array of uint8_t values
+ * @param size		the size of the key in bytes
+ * @retval *pc,		IN: primary initval, OUT: primary hash
+ * *retval *pb		IN: secondary initval, OUT: secondary hash
+ */
+void jlu32lpair(const void *key, size_t size, uint32_t *pc, uint32_t *pb)
+{
+    union { const void *ptr; size_t i; } u;
+    uint32_t a = _JLU3_INIT(*pc, size);
+    uint32_t b = a;
+    uint32_t c = a;
+
+    if (key == NULL)
+	goto exit;
+
+    c += *pb;	/* Add the secondary hash. */
+
+    u.ptr = key;
+    if (HASH_LITTLE_ENDIAN && ((u.i & 0x3) == 0)) {
+	const uint32_t *k = (const uint32_t *)key;	/* read 32-bit chunks */
+#ifdef	VALGRIND
+	const uint8_t  *k8;
+#endif
+
+	/*-- all but last block: aligned reads and affect 32 bits of (a,b,c) */
+	while (size > (size_t)12) {
+	    a += k[0];
+	    b += k[1];
+	    c += k[2];
+	    _JLU3_MIX(a,b,c);
+	    size -= 12;
+	    k += 3;
+	}
+	/*------------------------- handle the last (probably partial) block */
+	/* 
+	 * "k[2]&0xffffff" actually reads beyond the end of the string, but
+	 * then masks off the part it's not allowed to read.  Because the
+	 * string is aligned, the masked-off tail is in the same word as the
+	 * rest of the string.  Every machine with memory protection I've seen
+	 * does it on word boundaries, so is OK with this.  But VALGRIND will
+	 * still catch it and complain.  The masking trick does make the hash
+	 * noticeably faster for short strings (like English words).
+	 */
+#ifndef VALGRIND
+
+	switch (size) {
+	case 12:	c += k[2]; b+=k[1]; a+=k[0]; break;
+	case 11:	c += k[2]&0xffffff; b+=k[1]; a+=k[0]; break;
+	case 10:	c += k[2]&0xffff; b+=k[1]; a+=k[0]; break;
+	case  9:	c += k[2]&0xff; b+=k[1]; a+=k[0]; break;
+	case  8:	b += k[1]; a+=k[0]; break;
+	case  7:	b += k[1]&0xffffff; a+=k[0]; break;
+	case  6:	b += k[1]&0xffff; a+=k[0]; break;
+	case  5:	b += k[1]&0xff; a+=k[0]; break;
+	case  4:	a += k[0]; break;
+	case  3:	a += k[0]&0xffffff; break;
+	case  2:	a += k[0]&0xffff; break;
+	case  1:	a += k[0]&0xff; break;
+	case  0:	goto exit;
+	}
+
+#else /* make valgrind happy */
+
+	k8 = (const uint8_t *)k;
+	switch (size) {
+	case 12:	c += k[2]; b+=k[1]; a+=k[0];	break;
+	case 11:	c += ((uint32_t)k8[10])<<16;	/* fallthrough */
+	case 10:	c += ((uint32_t)k8[9])<<8;	/* fallthrough */
+	case  9:	c += k8[8];			/* fallthrough */
+	case  8:	b += k[1]; a+=k[0];		break;
+	case  7:	b += ((uint32_t)k8[6])<<16;	/* fallthrough */
+	case  6:	b += ((uint32_t)k8[5])<<8;	/* fallthrough */
+	case  5:	b += k8[4];			/* fallthrough */
+	case  4:	a += k[0];			break;
+	case  3:	a += ((uint32_t)k8[2])<<16;	/* fallthrough */
+	case  2:	a += ((uint32_t)k8[1])<<8;	/* fallthrough */
+	case  1:	a += k8[0];			break;
+	case  0:	goto exit;
+	}
+
+#endif /* !valgrind */
+
+    } else if (HASH_LITTLE_ENDIAN && ((u.i & 0x1) == 0)) {
+	const uint16_t *k = (const uint16_t *)key;	/* read 16-bit chunks */
+	const uint8_t  *k8;
+
+	/*----------- all but last block: aligned reads and different mixing */
+	while (size > (size_t)12) {
+	    a += k[0] + (((uint32_t)k[1])<<16);
+	    b += k[2] + (((uint32_t)k[3])<<16);
+	    c += k[4] + (((uint32_t)k[5])<<16);
+	    _JLU3_MIX(a,b,c);
+	    size -= 12;
+	    k += 6;
+	}
+
+	/*------------------------- handle the last (probably partial) block */
+	k8 = (const uint8_t *)k;
+	switch (size) {
+	case 12:
+	    c += k[4]+(((uint32_t)k[5])<<16);
+	    b += k[2]+(((uint32_t)k[3])<<16);
+	    a += k[0]+(((uint32_t)k[1])<<16);
+	    break;
+	case 11:
+	    c += ((uint32_t)k8[10])<<16;
+	    /* fallthrough */
+	case 10:
+	    c += k[4];
+	    b += k[2]+(((uint32_t)k[3])<<16);
+	    a += k[0]+(((uint32_t)k[1])<<16);
+	    break;
+	case  9:
+	    c += k8[8];
+	    /* fallthrough */
+	case  8:
+	    b += k[2]+(((uint32_t)k[3])<<16);
+	    a += k[0]+(((uint32_t)k[1])<<16);
+	    break;
+	case  7:
+	    b += ((uint32_t)k8[6])<<16;
+	    /* fallthrough */
+	case  6:
+	    b += k[2];
+	    a += k[0]+(((uint32_t)k[1])<<16);
+	    break;
+	case  5:
+	    b += k8[4];
+	    /* fallthrough */
+	case  4:
+	    a += k[0]+(((uint32_t)k[1])<<16);
+	    break;
+	case  3:
+	    a += ((uint32_t)k8[2])<<16;
+	    /* fallthrough */
+	case  2:
+	    a += k[0];
+	    break;
+	case  1:
+	    a += k8[0];
+	    break;
+	case  0:
+	    goto exit;
+	}
+
+    } else {		/* need to read the key one byte at a time */
+	const uint8_t *k = (const uint8_t *)key;
+
+	/*----------- all but the last block: affect some 32 bits of (a,b,c) */
+	while (size > (size_t)12) {
+	    a += k[0];
+	    a += ((uint32_t)k[1])<<8;
+	    a += ((uint32_t)k[2])<<16;
+	    a += ((uint32_t)k[3])<<24;
+	    b += k[4];
+	    b += ((uint32_t)k[5])<<8;
+	    b += ((uint32_t)k[6])<<16;
+	    b += ((uint32_t)k[7])<<24;
+	    c += k[8];
+	    c += ((uint32_t)k[9])<<8;
+	    c += ((uint32_t)k[10])<<16;
+	    c += ((uint32_t)k[11])<<24;
+	    _JLU3_MIX(a,b,c);
+	    size -= 12;
+	    k += 12;
+	}
+
+	/*---------------------------- last block: affect all 32 bits of (c) */
+	switch (size) {
+	case 12:	c += ((uint32_t)k[11])<<24;	/* fallthrough */
+	case 11:	c += ((uint32_t)k[10])<<16;	/* fallthrough */
+	case 10:	c += ((uint32_t)k[9])<<8;	/* fallthrough */
+	case  9:	c += k[8];			/* fallthrough */
+	case  8:	b += ((uint32_t)k[7])<<24;	/* fallthrough */
+	case  7:	b += ((uint32_t)k[6])<<16;	/* fallthrough */
+	case  6:	b += ((uint32_t)k[5])<<8;	/* fallthrough */
+	case  5:	b += k[4];			/* fallthrough */
+	case  4:	a += ((uint32_t)k[3])<<24;	/* fallthrough */
+	case  3:	a += ((uint32_t)k[2])<<16;	/* fallthrough */
+	case  2:	a += ((uint32_t)k[1])<<8;	/* fallthrough */
+	case  1:	a += k[0];
+	    break;
+	case  0:
+	    goto exit;
+	}
+    }
+
+    _JLU3_FINAL(a,b,c);
+
+exit:
+    *pc = c;
+    *pb = b;
+    return;
+}
+#endif	/* defined(_JLU3_jlu32lpair) */
+
+#if defined(_JLU3_jlu32b)
+uint32_t jlu32b(uint32_t h, const void *key, size_t size);
+/*
+ * jlu32b():
+ * This is the same as jlu32w() on big-endian machines.  It is different
+ * from jlu32l() on all machines.  jlu32b() takes advantage of
+ * big-endian byte ordering. 
+ *
+ * @param h		the previous hash, or an arbitrary value
+ * @param *k		the key, an array of uint8_t values
+ * @param size		the size of the key
+ * @return		the lookup3 hash
+ */
+uint32_t jlu32b(uint32_t h, const void *key, size_t size)
+{
+    union { const void *ptr; size_t i; } u;
+    uint32_t a = _JLU3_INIT(h, size);
+    uint32_t b = a;
+    uint32_t c = a;
+
+    if (key == NULL)
+	return h;
+
+    u.ptr = key;
+    if (HASH_BIG_ENDIAN && ((u.i & 0x3) == 0)) {
+	const uint32_t *k = (const uint32_t *)key;	/* read 32-bit chunks */
+#ifdef	VALGRIND
+	const uint8_t  *k8;
+#endif
+
+	/*-- all but last block: aligned reads and affect 32 bits of (a,b,c) */
+	while (size > 12) {
+	    a += k[0];
+	    b += k[1];
+	    c += k[2];
+	    _JLU3_MIX(a,b,c);
+	    size -= 12;
+	    k += 3;
+	}
+
+	/*------------------------- handle the last (probably partial) block */
+	/* 
+	 * "k[2]<<8" actually reads beyond the end of the string, but
+	 * then shifts out the part it's not allowed to read.  Because the
+	 * string is aligned, the illegal read is in the same word as the
+	 * rest of the string.  Every machine with memory protection I've seen
+	 * does it on word boundaries, so is OK with this.  But VALGRIND will
+	 * still catch it and complain.  The masking trick does make the hash
+	 * noticeably faster for short strings (like English words).
+	 */
+#ifndef VALGRIND
+
+	switch (size) {
+	case 12:	c += k[2]; b+=k[1]; a+=k[0]; break;
+	case 11:	c += k[2]&0xffffff00; b+=k[1]; a+=k[0]; break;
+	case 10:	c += k[2]&0xffff0000; b+=k[1]; a+=k[0]; break;
+	case  9:	c += k[2]&0xff000000; b+=k[1]; a+=k[0]; break;
+	case  8:	b += k[1]; a+=k[0]; break;
+	case  7:	b += k[1]&0xffffff00; a+=k[0]; break;
+	case  6:	b += k[1]&0xffff0000; a+=k[0]; break;
+	case  5:	b += k[1]&0xff000000; a+=k[0]; break;
+	case  4:	a += k[0]; break;
+	case  3:	a += k[0]&0xffffff00; break;
+	case  2:	a += k[0]&0xffff0000; break;
+	case  1:	a += k[0]&0xff000000; break;
+	case  0:	goto exit;
+    }
+
+#else  /* make valgrind happy */
+
+	k8 = (const uint8_t *)k;
+	switch (size) {	/* all the case statements fall through */
+	case 12:	c += k[2]; b+=k[1]; a+=k[0];	break;
+	case 11:	c += ((uint32_t)k8[10])<<8;	/* fallthrough */
+	case 10:	c += ((uint32_t)k8[9])<<16;	/* fallthrough */
+	case  9:	c += ((uint32_t)k8[8])<<24;	/* fallthrough */
+	case  8:	b += k[1]; a+=k[0];		break;
+	case  7:	b += ((uint32_t)k8[6])<<8;	/* fallthrough */
+	case  6:	b += ((uint32_t)k8[5])<<16;	/* fallthrough */
+	case  5:	b += ((uint32_t)k8[4])<<24;	/* fallthrough */
+	case  4:	a += k[0];			break;
+	case  3:	a += ((uint32_t)k8[2])<<8;	/* fallthrough */
+	case  2:	a += ((uint32_t)k8[1])<<16;	/* fallthrough */
+	case  1:	a += ((uint32_t)k8[0])<<24;	break;
+	case  0:	goto exit;
+    }
+
+#endif /* !VALGRIND */
+
+    } else {                        /* need to read the key one byte at a time */
+	const uint8_t *k = (const uint8_t *)key;
+
+	/*----------- all but the last block: affect some 32 bits of (a,b,c) */
+	while (size > 12) {
+	    a += ((uint32_t)k[0])<<24;
+	    a += ((uint32_t)k[1])<<16;
+	    a += ((uint32_t)k[2])<<8;
+	    a += ((uint32_t)k[3]);
+	    b += ((uint32_t)k[4])<<24;
+	    b += ((uint32_t)k[5])<<16;
+	    b += ((uint32_t)k[6])<<8;
+	    b += ((uint32_t)k[7]);
+	    c += ((uint32_t)k[8])<<24;
+	    c += ((uint32_t)k[9])<<16;
+	    c += ((uint32_t)k[10])<<8;
+	    c += ((uint32_t)k[11]);
+	    _JLU3_MIX(a,b,c);
+	    size -= 12;
+	    k += 12;
+	}
+
+	/*---------------------------- last block: affect all 32 bits of (c) */
+	switch (size) {	/* all the case statements fall through */
+	case 12:	c += k[11];			/* fallthrough */
+	case 11:	c += ((uint32_t)k[10])<<8;	/* fallthrough */
+	case 10:	c += ((uint32_t)k[9])<<16;	/* fallthrough */
+	case  9:	c += ((uint32_t)k[8])<<24;	/* fallthrough */
+	case  8:	b += k[7];			/* fallthrough */
+	case  7:	b += ((uint32_t)k[6])<<8;	/* fallthrough */
+	case  6:	b += ((uint32_t)k[5])<<16;	/* fallthrough */
+	case  5:	b += ((uint32_t)k[4])<<24;	/* fallthrough */
+	case  4:	a += k[3];			/* fallthrough */
+	case  3:	a += ((uint32_t)k[2])<<8;	/* fallthrough */
+	case  2:	a += ((uint32_t)k[1])<<16;	/* fallthrough */
+	case  1:	a += ((uint32_t)k[0])<<24;	/* fallthrough */
+	    break;
+	case  0:
+	    goto exit;
+	}
+    }
+
+    _JLU3_FINAL(a,b,c);
+
+exit:
+    return c;
+}
+#endif	/* defined(_JLU3_jlu32b) */
+
+#if defined(_JLU3_SELFTEST)
+
+/* used for timings */
+static void driver1(void)
+{
+    uint8_t buf[256];
+    uint32_t i;
+    uint32_t h=0;
+    time_t a,z;
+
+    time(&a);
+    for (i=0; i<256; ++i) buf[i] = 'x';
+    for (i=0; i<1; ++i) {
+	h = jlu32l(h, &buf[0], sizeof(buf[0]));
+    }
+    time(&z);
+    if (z-a > 0) printf("time %d %.8x\n", (int)(z-a), h);
+}
+
+/* check that every input bit changes every output bit half the time */
+#define HASHSTATE 1
+#define HASHLEN   1
+#define MAXPAIR 60
+#define MAXLEN  70
+static void driver2(void)
+{
+    uint8_t qa[MAXLEN+1], qb[MAXLEN+2], *a = &qa[0], *b = &qb[1];
+    uint32_t c[HASHSTATE], d[HASHSTATE], i=0, j=0, k, l, m=0, z;
+    uint32_t e[HASHSTATE],f[HASHSTATE],g[HASHSTATE],h[HASHSTATE];
+    uint32_t x[HASHSTATE],y[HASHSTATE];
+    uint32_t hlen;
+
+    printf("No more than %d trials should ever be needed \n",MAXPAIR/2);
+    for (hlen=0; hlen < MAXLEN; ++hlen) {
+	z=0;
+	for (i=0; i<hlen; ++i) {	/*-------------- for each input byte, */
+	    for (j=0; j<8; ++j) {	/*--------------- for each input bit, */
+		for (m=1; m<8; ++m) {	/*---- for several possible initvals, */
+		    for (l=0; l<HASHSTATE; ++l)
+			e[l]=f[l]=g[l]=h[l]=x[l]=y[l]=~((uint32_t)0);
+
+		    /* check that every output bit is affected by that input bit */
+		    for (k=0; k<MAXPAIR; k+=2) { 
+			uint32_t finished=1;
+			/* keys have one bit different */
+			for (l=0; l<hlen+1; ++l) {a[l] = b[l] = (uint8_t)0;}
+			/* have a and b be two keys differing in only one bit */
+			a[i] ^= (k<<j);
+			a[i] ^= (k>>(8-j));
+			c[0] = jlu32l(m, a, hlen);
+			b[i] ^= ((k+1)<<j);
+			b[i] ^= ((k+1)>>(8-j));
+			d[0] = jlu32l(m, b, hlen);
+			/* check every bit is 1, 0, set, and not set at least once */
+			for (l=0; l<HASHSTATE; ++l) {
+			    e[l] &= (c[l]^d[l]);
+			    f[l] &= ~(c[l]^d[l]);
+			    g[l] &= c[l];
+			    h[l] &= ~c[l];
+			    x[l] &= d[l];
+			    y[l] &= ~d[l];
+			    if (e[l]|f[l]|g[l]|h[l]|x[l]|y[l]) finished=0;
+			}
+			if (finished) break;
+		    }
+		    if (k>z) z=k;
+		    if (k == MAXPAIR) {
+			printf("Some bit didn't change: ");
+			printf("%.8x %.8x %.8x %.8x %.8x %.8x  ",
+				e[0],f[0],g[0],h[0],x[0],y[0]);
+			printf("i %u j %u m %u len %u\n", i, j, m, hlen);
+		    }
+		    if (z == MAXPAIR) goto done;
+		}
+	    }
+	}
+   done:
+	if (z < MAXPAIR) {
+	    printf("Mix success  %2u bytes  %2u initvals  ",i,m);
+	    printf("required  %u  trials\n", z/2);
+	}
+    }
+    printf("\n");
+}
+
+/* Check for reading beyond the end of the buffer and alignment problems */
+static void driver3(void)
+{
+    uint8_t buf[MAXLEN+20], *b;
+    uint32_t len;
+    uint8_t q[] = "This is the time for all good men to come to the aid of their country...";
+    uint32_t h;
+    uint8_t qq[] = "xThis is the time for all good men to come to the aid of their country...";
+    uint32_t i;
+    uint8_t qqq[] = "xxThis is the time for all good men to come to the aid of their country...";
+    uint32_t j;
+    uint8_t qqqq[] = "xxxThis is the time for all good men to come to the aid of their country...";
+    uint32_t ref,x,y;
+    uint8_t *p;
+    uint32_t m = 13;
+
+    printf("Endianness.  These lines should all be the same (for values filled in):\n");
+    printf("%.8x                            %.8x                            %.8x\n",
+	jlu32w(m, (const uint32_t *)q, (sizeof(q)-1)/4),
+	jlu32w(m, (const uint32_t *)q, (sizeof(q)-5)/4),
+	jlu32w(m, (const uint32_t *)q, (sizeof(q)-9)/4));
+    p = q;
+    printf("%.8x %.8x %.8x %.8x %.8x %.8x %.8x %.8x %.8x %.8x %.8x %.8x\n",
+	jlu32l(m, p, sizeof(q)-1), jlu32l(m, p, sizeof(q)-2),
+	jlu32l(m, p, sizeof(q)-3), jlu32l(m, p, sizeof(q)-4),
+	jlu32l(m, p, sizeof(q)-5), jlu32l(m, p, sizeof(q)-6),
+	jlu32l(m, p, sizeof(q)-7), jlu32l(m, p, sizeof(q)-8),
+	jlu32l(m, p, sizeof(q)-9), jlu32l(m, p, sizeof(q)-10),
+	jlu32l(m, p, sizeof(q)-11), jlu32l(m, p, sizeof(q)-12));
+    p = &qq[1];
+    printf("%.8x %.8x %.8x %.8x %.8x %.8x %.8x %.8x %.8x %.8x %.8x %.8x\n",
+	jlu32l(m, p, sizeof(q)-1), jlu32l(m, p, sizeof(q)-2),
+	jlu32l(m, p, sizeof(q)-3), jlu32l(m, p, sizeof(q)-4),
+	jlu32l(m, p, sizeof(q)-5), jlu32l(m, p, sizeof(q)-6),
+	jlu32l(m, p, sizeof(q)-7), jlu32l(m, p, sizeof(q)-8),
+	jlu32l(m, p, sizeof(q)-9), jlu32l(m, p, sizeof(q)-10),
+	jlu32l(m, p, sizeof(q)-11), jlu32l(m, p, sizeof(q)-12));
+    p = &qqq[2];
+    printf("%.8x %.8x %.8x %.8x %.8x %.8x %.8x %.8x %.8x %.8x %.8x %.8x\n",
+	jlu32l(m, p, sizeof(q)-1), jlu32l(m, p, sizeof(q)-2),
+	jlu32l(m, p, sizeof(q)-3), jlu32l(m, p, sizeof(q)-4),
+	jlu32l(m, p, sizeof(q)-5), jlu32l(m, p, sizeof(q)-6),
+	jlu32l(m, p, sizeof(q)-7), jlu32l(m, p, sizeof(q)-8),
+	jlu32l(m, p, sizeof(q)-9), jlu32l(m, p, sizeof(q)-10),
+	jlu32l(m, p, sizeof(q)-11), jlu32l(m, p, sizeof(q)-12));
+    p = &qqqq[3];
+    printf("%.8x %.8x %.8x %.8x %.8x %.8x %.8x %.8x %.8x %.8x %.8x %.8x\n",
+	jlu32l(m, p, sizeof(q)-1), jlu32l(m, p, sizeof(q)-2),
+	jlu32l(m, p, sizeof(q)-3), jlu32l(m, p, sizeof(q)-4),
+	jlu32l(m, p, sizeof(q)-5), jlu32l(m, p, sizeof(q)-6),
+	jlu32l(m, p, sizeof(q)-7), jlu32l(m, p, sizeof(q)-8),
+	jlu32l(m, p, sizeof(q)-9), jlu32l(m, p, sizeof(q)-10),
+	jlu32l(m, p, sizeof(q)-11), jlu32l(m, p, sizeof(q)-12));
+    printf("\n");
+    for (h=0, b=buf+1; h<8; ++h, ++b) {
+	for (i=0; i<MAXLEN; ++i) {
+	    len = i;
+	    for (j=0; j<i; ++j)
+		*(b+j)=0;
+
+	    /* these should all be equal */
+	    m = 1;
+	    ref = jlu32l(m, b, len);
+	    *(b+i)=(uint8_t)~0;
+	    *(b-1)=(uint8_t)~0;
+	    x = jlu32l(m, b, len);
+	    y = jlu32l(m, b, len);
+	    if ((ref != x) || (ref != y)) 
+		printf("alignment error: %.8x %.8x %.8x %u %u\n",ref,x,y, h, i);
+	}
+    }
+}
+
+/* check for problems with nulls */
+static void driver4(void)
+{
+    uint8_t buf[1];
+    uint32_t h;
+    uint32_t i;
+    uint32_t state[HASHSTATE];
+
+    buf[0] = ~0;
+    for (i=0; i<HASHSTATE; ++i)
+	state[i] = 1;
+    printf("These should all be different\n");
+    h = 0;
+    for (i=0; i<8; ++i) {
+	h = jlu32l(h, buf, 0);
+	printf("%2ld  0-byte strings, hash is  %.8x\n", (long)i, h);
+    }
+}
+
+
+int main(int argc, char ** argv)
+{
+    driver1();	/* test that the key is hashed: used for timings */
+    driver2();	/* test that whole key is hashed thoroughly */
+    driver3();	/* test that nothing but the key is hashed */
+    driver4();	/* test hashing multiple buffers (all buffers are null) */
+    return 1;
+}
+
+#endif  /* _JLU3_SELFTEST */

popt/popt.h

@@ -1,5 +1,4 @@
-/** \file popt/popt.h
- * \ingroup popt
+/** @file
  */
 
 /* (C) 1998-2000 Red Hat, Inc. -- Licensing details are in the COPYING
@@ -13,45 +12,49 @@
 
 #define POPT_OPTION_DEPTH	10
 
-/** \ingroup popt
+/**
  * \name Arg type identifiers
  */
-/*@{*/
-#define POPT_ARG_NONE		0	/*!< no arg */
-#define POPT_ARG_STRING		1	/*!< arg will be saved as string */
-#define POPT_ARG_INT		2	/*!< arg will be converted to int */
-#define POPT_ARG_LONG		3	/*!< arg will be converted to long */
-#define POPT_ARG_INCLUDE_TABLE	4	/*!< arg points to table */
-#define POPT_ARG_CALLBACK	5	/*!< table-wide callback... must be
+#define POPT_ARG_NONE		 0U	/*!< no arg */
+#define POPT_ARG_STRING		 1U	/*!< arg will be saved as string */
+#define POPT_ARG_INT		 2U	/*!< arg ==> int */
+#define POPT_ARG_LONG		 3U	/*!< arg ==> long */
+#define POPT_ARG_INCLUDE_TABLE	 4U	/*!< arg points to table */
+#define POPT_ARG_CALLBACK	 5U	/*!< table-wide callback... must be
 					   set first in table; arg points 
 					   to callback, descrip points to 
 					   callback data to pass */
-#define POPT_ARG_INTL_DOMAIN    6       /*!< set the translation domain
+#define POPT_ARG_INTL_DOMAIN     6U	/*!< set the translation domain
 					   for this table and any
 					   included tables; arg points
 					   to the domain string */
-#define POPT_ARG_VAL		7	/*!< arg should take value val */
-#define	POPT_ARG_FLOAT		8	/*!< arg will be converted to float */
-#define	POPT_ARG_DOUBLE		9	/*!< arg will be converted to double */
+#define POPT_ARG_VAL		 7U	/*!< arg should take value val */
+#define	POPT_ARG_FLOAT		 8U	/*!< arg ==> float */
+#define	POPT_ARG_DOUBLE		 9U	/*!< arg ==> double */
+#define	POPT_ARG_LONGLONG	 10U	/*!< arg ==> long long */
 
-#define POPT_ARG_MASK		0x0000FFFF
-/*@}*/
+#define POPT_ARG_MAINCALL	(16U+11U)	/*!< EXPERIMENTAL: return (*arg) (argc, argv) */
+#define	POPT_ARG_ARGV		12U	/*!< dupe'd arg appended to realloc'd argv array. */
+#define	POPT_ARG_SHORT		13U	/*!< arg ==> short */
+#define	POPT_ARG_BITSET		(16U+14U)	/*!< arg ==> bit set */
 
-/** \ingroup popt
+#define POPT_ARG_MASK		0x000000FFU
+#define POPT_GROUP_MASK		0x0000FF00U
+
+/**
  * \name Arg modifiers
  */
-/*@{*/
-#define POPT_ARGFLAG_ONEDASH	0x80000000  /*!< allow -longoption */
-#define POPT_ARGFLAG_DOC_HIDDEN 0x40000000  /*!< don't show in help/usage */
-#define POPT_ARGFLAG_STRIP	0x20000000  /*!< strip this arg from argv(only applies to long args) */
-#define	POPT_ARGFLAG_OPTIONAL	0x10000000  /*!< arg may be missing */
+#define POPT_ARGFLAG_ONEDASH	0x80000000U  /*!< allow -longoption */
+#define POPT_ARGFLAG_DOC_HIDDEN 0x40000000U  /*!< don't show in help/usage */
+#define POPT_ARGFLAG_STRIP	0x20000000U  /*!< strip this arg from argv(only applies to long args) */
+#define	POPT_ARGFLAG_OPTIONAL	0x10000000U  /*!< arg may be missing */
 
-#define	POPT_ARGFLAG_OR		0x08000000  /*!< arg will be or'ed */
-#define	POPT_ARGFLAG_NOR	0x09000000  /*!< arg will be nor'ed */
-#define	POPT_ARGFLAG_AND	0x04000000  /*!< arg will be and'ed */
-#define	POPT_ARGFLAG_NAND	0x05000000  /*!< arg will be nand'ed */
-#define	POPT_ARGFLAG_XOR	0x02000000  /*!< arg will be xor'ed */
-#define	POPT_ARGFLAG_NOT	0x01000000  /*!< arg will be negated */
+#define	POPT_ARGFLAG_OR		0x08000000U  /*!< arg will be or'ed */
+#define	POPT_ARGFLAG_NOR	0x09000000U  /*!< arg will be nor'ed */
+#define	POPT_ARGFLAG_AND	0x04000000U  /*!< arg will be and'ed */
+#define	POPT_ARGFLAG_NAND	0x05000000U  /*!< arg will be nand'ed */
+#define	POPT_ARGFLAG_XOR	0x02000000U  /*!< arg will be xor'ed */
+#define	POPT_ARGFLAG_NOT	0x01000000U  /*!< arg will be negated */
 #define POPT_ARGFLAG_LOGICALOPS \
         (POPT_ARGFLAG_OR|POPT_ARGFLAG_AND|POPT_ARGFLAG_XOR)
 
@@ -60,158 +63,126 @@
 #define	POPT_BIT_CLR	(POPT_ARG_VAL|POPT_ARGFLAG_NAND)
 					/*!< clear arg bit(s) */
 
-#define	POPT_ARGFLAG_SHOW_DEFAULT 0x00800000 /*!< show default value in --help */
+#define	POPT_ARGFLAG_SHOW_DEFAULT 0x00800000U /*!< show default value in --help */
+#define	POPT_ARGFLAG_RANDOM	0x00400000U  /*!< random value in [1,arg] */
+#define	POPT_ARGFLAG_TOGGLE	0x00200000U  /*!< permit --[no]opt prefix toggle */
 
-/*@}*/
-
-/** \ingroup popt
+/**
  * \name Callback modifiers
  */
-/*@{*/
-#define POPT_CBFLAG_PRE		0x80000000  /*!< call the callback before parse */
-#define POPT_CBFLAG_POST	0x40000000  /*!< call the callback after parse */
-#define POPT_CBFLAG_INC_DATA	0x20000000  /*!< use data from the include line,
+#define POPT_CBFLAG_PRE		0x80000000U  /*!< call the callback before parse */
+#define POPT_CBFLAG_POST	0x40000000U  /*!< call the callback after parse */
+#define POPT_CBFLAG_INC_DATA	0x20000000U  /*!< use data from the include line,
 					       not the subtable */
-#define POPT_CBFLAG_SKIPOPTION	0x10000000  /*!< don't callback with option */
-#define POPT_CBFLAG_CONTINUE	0x08000000  /*!< continue callbacks with option */
-/*@}*/
+#define POPT_CBFLAG_SKIPOPTION	0x10000000U  /*!< don't callback with option */
+#define POPT_CBFLAG_CONTINUE	0x08000000U  /*!< continue callbacks with option */
 
-/** \ingroup popt
+/**
  * \name Error return values
  */
-/*@{*/
 #define POPT_ERROR_NOARG	-10	/*!< missing argument */
 #define POPT_ERROR_BADOPT	-11	/*!< unknown option */
 #define POPT_ERROR_UNWANTEDARG	-12	/*!< option does not take an argument */
 #define POPT_ERROR_OPTSTOODEEP	-13	/*!< aliases nested too deeply */
-#define POPT_ERROR_BADQUOTE	-15	/*!< error in paramter quoting */
+#define POPT_ERROR_BADQUOTE	-15	/*!< error in parameter quoting */
 #define POPT_ERROR_ERRNO	-16	/*!< errno set, use strerror(errno) */
 #define POPT_ERROR_BADNUMBER	-17	/*!< invalid numeric value */
 #define POPT_ERROR_OVERFLOW	-18	/*!< number too large or too small */
 #define	POPT_ERROR_BADOPERATION	-19	/*!< mutually exclusive logical operations requested */
 #define	POPT_ERROR_NULLARG	-20	/*!< opt->arg should not be NULL */
 #define	POPT_ERROR_MALLOC	-21	/*!< memory allocation failed */
-/*@}*/
+#define	POPT_ERROR_BADCONFIG	-22	/*!< config file failed sanity test */
 
-/** \ingroup popt
+/**
  * \name poptBadOption() flags
  */
-/*@{*/
-#define POPT_BADOPTION_NOALIAS  (1 << 0)  /*!< don't go into an alias */
-/*@}*/
+#define POPT_BADOPTION_NOALIAS  (1U << 0)  /*!< don't go into an alias */
 
-/** \ingroup popt
+/**
  * \name poptGetContext() flags
  */
-/*@{*/
-#define POPT_CONTEXT_NO_EXEC	(1 << 0)  /*!< ignore exec expansions */
-#define POPT_CONTEXT_KEEP_FIRST	(1 << 1)  /*!< pay attention to argv[0] */
-#define POPT_CONTEXT_POSIXMEHARDER (1 << 2) /*!< options can't follow args */
-#define POPT_CONTEXT_ARG_OPTS	(1 << 4) /*!< return args as options with value 0 */
-/*@}*/
+#define POPT_CONTEXT_NO_EXEC	(1U << 0)  /*!< ignore exec expansions */
+#define POPT_CONTEXT_KEEP_FIRST	(1U << 1)  /*!< pay attention to argv[0] */
+#define POPT_CONTEXT_POSIXMEHARDER (1U << 2) /*!< options can't follow args */
+#define POPT_CONTEXT_ARG_OPTS	(1U << 4) /*!< return args as options with value 0 */
 
-/** \ingroup popt
+/**
  */
 struct poptOption {
-/*@observer@*/ /*@null@*/
     const char * longName;	/*!< may be NULL */
-    char shortName;		/*!< may be NUL */
-    int argInfo;
-/*@shared@*/ /*@null@*/
+    char shortName;		/*!< may be '\0' */
+    unsigned int argInfo;	/*!< type of argument expected after the option */
     void * arg;			/*!< depends on argInfo */
-    int val;			/*!< 0 means don't return, just update flag */
-/*@observer@*/ /*@null@*/
+    int val;			/*!< 0 means don't return, just update arg */
     const char * descrip;	/*!< description for autohelp -- may be NULL */
-/*@observer@*/ /*@null@*/
-    const char * argDescrip;	/*!< argument description for autohelp */
+    const char * argDescrip;	/*!< argument description for autohelp -- may be NULL */
 };
 
-/** \ingroup popt
+/**
  * A popt alias argument for poptAddAlias().
  */
 struct poptAlias {
-/*@owned@*/ /*@null@*/
     const char * longName;	/*!< may be NULL */
     char shortName;		/*!< may be NUL */
     int argc;
-/*@owned@*/
     const char ** argv;		/*!< must be free()able */
 };
 
-/** \ingroup popt
+/**
  * A popt alias or exec argument for poptAddItem().
  */
-/*@-exporttype@*/
 typedef struct poptItem_s {
     struct poptOption option;	/*!< alias/exec name(s) and description. */
     int argc;			/*!< (alias) no. of args. */
-/*@owned@*/
     const char ** argv;		/*!< (alias) args, must be free()able. */
 } * poptItem;
-/*@=exporttype@*/
 
-/** \ingroup popt
+/**
  * \name Auto-generated help/usage
  */
-/*@{*/
 
 /**
  * Empty table marker to enable displaying popt alias/exec options.
  */
-/*@-exportvar@*/
-/*@unchecked@*/ /*@observer@*/
 extern struct poptOption poptAliasOptions[];
-/*@=exportvar@*/
 #define POPT_AUTOALIAS { NULL, '\0', POPT_ARG_INCLUDE_TABLE, poptAliasOptions, \
 			0, "Options implemented via popt alias/exec:", NULL },
 
 /**
  * Auto help table options.
  */
-/*@-exportvar@*/
-/*@unchecked@*/ /*@observer@*/
 extern struct poptOption poptHelpOptions[];
-/*@=exportvar@*/
 
-/*@-exportvar@*/
-/*@unchecked@*/ /*@observer@*/
 extern struct poptOption * poptHelpOptionsI18N;
-/*@=exportvar@*/
 
 #define POPT_AUTOHELP { NULL, '\0', POPT_ARG_INCLUDE_TABLE, poptHelpOptions, \
 			0, "Help options:", NULL },
 
-#define POPT_TABLEEND { NULL, '\0', 0, 0, 0, NULL, NULL }
-/*@}*/
+#define POPT_TABLEEND { NULL, '\0', 0, NULL, 0, NULL, NULL }
 
-/** \ingroup popt
+/**
  */
-/*@-exporttype@*/
-typedef /*@abstract@*/ struct poptContext_s * poptContext;
-/*@=exporttype@*/
+typedef struct poptContext_s * poptContext;
 
-/** \ingroup popt
+/**
  */
 #ifndef __cplusplus
-/*@-exporttype -typeuse@*/
 typedef struct poptOption * poptOption;
-/*@=exporttype =typeuse@*/
 #endif
 
-/*@-exportconst@*/
+/**
+ */
 enum poptCallbackReason {
     POPT_CALLBACK_REASON_PRE	= 0, 
     POPT_CALLBACK_REASON_POST	= 1,
     POPT_CALLBACK_REASON_OPTION = 2
 };
-/*@=exportconst@*/
 
 #ifdef __cplusplus
 extern "C" {
 #endif
-/*@-type@*/
 
-/** \ingroup popt
+/**
  * Table callback prototype.
  * @param con		context
  * @param reason	reason for callback
@@ -221,13 +192,18 @@ extern "C" {
  */
 typedef void (*poptCallbackType) (poptContext con, 
 		enum poptCallbackReason reason,
-		/*@null@*/ const struct poptOption * opt,
-		/*@null@*/ const char * arg,
-		/*@null@*/ const void * data)
-	/*@globals internalState @*/
-	/*@modifies internalState @*/;
+		const struct poptOption * opt,
+		const char * arg,
+		const void * data);
 
-/** \ingroup popt
+/**
+ * Destroy context.
+ * @param con		context
+ * @return		NULL always
+ */
+poptContext poptFreeContext( poptContext con);
+
+/**
  * Initialize popt context.
  * @param name		context name (usually argv[0] program name)
  * @param argc		no. of arguments
@@ -236,97 +212,90 @@ typedef void (*poptCallbackType) (poptContext con,
  * @param flags		or'd POPT_CONTEXT_* bits
  * @return		initialized popt context
  */
-/*@only@*/ /*@null@*/
 poptContext poptGetContext(
-		/*@dependent@*/ /*@keep@*/ const char * name,
-		int argc, /*@dependent@*/ /*@keep@*/ const char ** argv,
-		/*@dependent@*/ /*@keep@*/ const struct poptOption * options,
-		int flags)
-	/*@*/;
+		const char * name,
+		int argc, const char ** argv,
+		const struct poptOption * options,
+		unsigned int flags);
 
-/** \ingroup popt
+/**
+ * Destroy context (alternative implementation).
+ * @param con		context
+ * @return		NULL always
+ */
+poptContext poptFini( poptContext con);
+
+/**
+ * Initialize popt context (alternative implementation).
+ * This routine does poptGetContext() and then poptReadConfigFiles().
+ * @param argc		no. of arguments
+ * @param argv		argument array
+ * @param options	address of popt option table
+ * @param configPaths	colon separated file path(s) to read.
+ * @return		initialized popt context (NULL on error).
+ */
+poptContext poptInit(int argc, const char ** argv,
+		const struct poptOption * options,
+		const char * configPaths);
+
+/**
  * Reinitialize popt context.
  * @param con		context
  */
-/*@unused@*/
-void poptResetContext(/*@null@*/poptContext con)
-	/*@modifies con @*/;
+void poptResetContext(poptContext con);
 
-/** \ingroup popt
+/**
  * Return value of next option found.
  * @param con		context
  * @return		next option val, -1 on last item, POPT_ERROR_* on error
  */
-int poptGetNextOpt(/*@null@*/poptContext con)
-	/*@globals fileSystem, internalState @*/
-	/*@modifies con, fileSystem, internalState @*/;
+int poptGetNextOpt(poptContext con);
 
-/** \ingroup popt
+/**
  * Return next option argument (if any).
  * @param con		context
  * @return		option argument, NULL if no argument is available
  */
-/*@observer@*/ /*@null@*/ /*@unused@*/
-const char * poptGetOptArg(/*@null@*/poptContext con)
-	/*@modifies con @*/;
+char * poptGetOptArg(poptContext con);
 
-/** \ingroup popt
+/**
  * Return next argument.
  * @param con		context
  * @return		next argument, NULL if no argument is available
  */
-/*@observer@*/ /*@null@*/ /*@unused@*/
-const char * poptGetArg(/*@null@*/poptContext con)
-	/*@modifies con @*/;
+const char * poptGetArg(poptContext con);
 
-/** \ingroup popt
+/**
  * Peek at current argument.
  * @param con		context
  * @return		current argument, NULL if no argument is available
  */
-/*@observer@*/ /*@null@*/ /*@unused@*/
-const char * poptPeekArg(/*@null@*/poptContext con)
-	/*@*/;
+const char * poptPeekArg(poptContext con);
 
-/** \ingroup popt
+/**
  * Return remaining arguments.
  * @param con		context
  * @return		argument array, NULL terminated
  */
-/*@observer@*/ /*@null@*/
-const char ** poptGetArgs(/*@null@*/poptContext con)
-	/*@modifies con @*/;
+const char ** poptGetArgs(poptContext con);
 
-/** \ingroup popt
+/**
  * Return the option which caused the most recent error.
  * @param con		context
  * @param flags
  * @return		offending option
  */
-/*@observer@*/
-const char * poptBadOption(/*@null@*/poptContext con, int flags)
-	/*@*/;
+const char * poptBadOption(poptContext con, unsigned int flags);
 
-/** \ingroup popt
- * Destroy context.
- * @param con		context
- * @return		NULL always
- */
-/*@null@*/
-poptContext poptFreeContext( /*@only@*/ /*@null@*/ poptContext con)
-	/*@modifies con @*/;
-
-/** \ingroup popt
+/**
  * Add arguments to context.
  * @param con		context
  * @param argv		argument array, NULL terminated
  * @return		0 on success, POPT_ERROR_OPTSTOODEEP on failure
  */
-/*@unused@*/
-int poptStuffArgs(poptContext con, /*@keep@*/ const char ** argv)
-	/*@modifies con @*/;
+int poptStuffArgs(poptContext con, const char ** argv);
 
-/** \ingroup popt
+/**
  * Add alias to context.
  * @todo Pass alias by reference, not value.
  * @deprecated Use poptAddItem instead.
@@ -335,44 +304,64 @@ int poptStuffArgs(poptContext con, /*@keep@*/ const char ** argv)
  * @param flags		(unused)
  * @return		0 on success
  */
-/*@unused@*/
-int poptAddAlias(poptContext con, struct poptAlias alias, int flags)
-	/*@modifies con @*/;
+int poptAddAlias(poptContext con, struct poptAlias alias, int flags);
 
-/** \ingroup popt
+/**
  * Add alias/exec item to context.
  * @param con		context
  * @param newItem	alias/exec item to add
  * @param flags		0 for alias, 1 for exec
  * @return		0 on success
  */
-int poptAddItem(poptContext con, poptItem newItem, int flags)
-	/*@modifies con @*/;
+int poptAddItem(poptContext con, poptItem newItem, int flags);
 
-/** \ingroup popt
+/**
+ * Test path/file for config file sanity (regular file, permissions etc)
+ * @param fn		file name
+ * @return		1 on OK, 0 on NOTOK.
+ */
+int poptSaneFile(const char * fn);
+
+/**
+ * Read a file into a buffer.
+ * @param fn		file name
+ * @retval *bp		buffer (malloc'd) (or NULL)
+ * @retval *nbp		no. of bytes in buffer (including final NUL) (or NULL)
+ * @param flags		1 to trim escaped newlines
+ * return		0 on success
+ */
+int poptReadFile(const char * fn, char ** bp,
+		size_t * nbp, int flags);
+#define	POPT_READFILE_TRIMNEWLINES	1
+
+/**
  * Read configuration file.
  * @param con		context
  * @param fn		file name to read
  * @return		0 on success, POPT_ERROR_ERRNO on failure
  */
-int poptReadConfigFile(poptContext con, const char * fn)
-	/*@globals errno, fileSystem, internalState @*/
-	/*@modifies con->execs, con->numExecs,
-		errno, fileSystem, internalState @*/;
+int poptReadConfigFile(poptContext con, const char * fn);
 
-/** \ingroup popt
+/**
+ * Read configuration file(s).
+ * Colon separated files to read, looping over poptReadConfigFile().
+ * Note that an '@' character preceding a path in the list will
+ * also perform additional sanity checks on the file before reading.
+ * @param con		context
+ * @param paths		colon separated file name(s) to read
+ * @return		0 on success, POPT_ERROR_BADCONFIG on failure
+ */
+int poptReadConfigFiles(poptContext con, const char * paths);
+
+/**
  * Read default configuration from /etc/popt and $HOME/.popt.
  * @param con		context
  * @param useEnv	(unused)
  * @return		0 on success, POPT_ERROR_ERRNO on failure
  */
-/*@unused@*/
-int poptReadDefaultConfig(poptContext con, /*@unused@*/ int useEnv)
-	/*@globals fileSystem, internalState @*/
-	/*@modifies con->execs, con->numExecs,
-		fileSystem, internalState @*/;
+int poptReadDefaultConfig(poptContext con, int useEnv);
 
-/** \ingroup popt
+/**
  * Duplicate an argument array.
  * @note: The argument array is malloc'd as a single area, so only argv must
  * be free'd.
@@ -383,12 +372,11 @@ int poptReadDefaultConfig(poptContext con, /*@unused@*/ int useEnv)
  * @retval argvPtr	address of returned argument array
  * @return		0 on success, POPT_ERROR_NOARG on failure
  */
-int poptDupArgv(int argc, /*@null@*/ const char **argv,
-		/*@null@*/ /*@out@*/ int * argcPtr,
-		/*@null@*/ /*@out@*/ const char *** argvPtr)
-	/*@modifies *argcPtr, *argvPtr @*/;
+int poptDupArgv(int argc, const char **argv,
+		int * argcPtr,
+		const char *** argvPtr);
 
-/** \ingroup popt
+/**
  * Parse a string into an argument array.
  * The parse allows ', ", and \ quoting, but ' is treated the same as " and
  * both may include \ quotes.
@@ -400,10 +388,9 @@ int poptDupArgv(int argc, /*@null@*/ const char **argv,
  * @retval argvPtr	address of returned argument array
  */
 int poptParseArgvString(const char * s,
-		/*@out@*/ int * argcPtr, /*@out@*/ const char *** argvPtr)
-	/*@modifies *argcPtr, *argvPtr @*/;
+		int * argcPtr, const char *** argvPtr);
 
-/** \ingroup popt
+/**
  * Parses an input configuration file and returns an string that is a 
  * command line.  For use with popt.  You must free the return value when done.
  *
@@ -418,8 +405,8 @@ bla=bla
 
 this_is   =   fdsafdas
      bad_line=        
-  reall bad line  
-  reall bad line  = again
+  really bad line
+  really bad line  = again
 5555=   55555   
   test = with lots of spaces
 \endverbatim
@@ -449,83 +436,82 @@ this_is   =   fdsafdas
  * @return		0 on success
  * @see			poptParseArgvString
  */
-/*@-fcnuse@*/
-int poptConfigFileToString(FILE *fp, /*@out@*/ char ** argstrp, int flags)
-	/*@globals fileSystem @*/
-	/*@modifies *fp, *argstrp, fileSystem @*/;
-/*@=fcnuse@*/
+int poptConfigFileToString(FILE *fp, char ** argstrp, int flags);
 
-/** \ingroup popt
+/**
  * Return formatted error string for popt failure.
  * @param error		popt error
  * @return		error string
  */
-/*@observer@*/
-const char * poptStrerror(const int error)
-	/*@*/;
+const char * poptStrerror(const int error);
 
-/** \ingroup popt
+/**
  * Limit search for executables.
  * @param con		context
  * @param path		single path to search for executables
  * @param allowAbsolute	absolute paths only?
  */
-/*@unused@*/
-void poptSetExecPath(poptContext con, const char * path, int allowAbsolute)
-	/*@modifies con @*/;
+void poptSetExecPath(poptContext con, const char * path, int allowAbsolute);
 
-/** \ingroup popt
+/**
  * Print detailed description of options.
  * @param con		context
- * @param fp		ouput file handle
+ * @param fp		output file handle
  * @param flags		(unused)
  */
-void poptPrintHelp(poptContext con, FILE * fp, /*@unused@*/ int flags)
-	/*@globals fileSystem @*/
-	/*@modifies *fp, fileSystem @*/;
+void poptPrintHelp(poptContext con, FILE * fp, int flags);
 
-/** \ingroup popt
+/**
  * Print terse description of options.
  * @param con		context
- * @param fp		ouput file handle
+ * @param fp		output file handle
  * @param flags		(unused)
  */
-void poptPrintUsage(poptContext con, FILE * fp, /*@unused@*/ int flags)
-	/*@globals fileSystem @*/
-	/*@modifies *fp, fileSystem @*/;
+void poptPrintUsage(poptContext con, FILE * fp, int flags);
 
-/** \ingroup popt
+/**
  * Provide text to replace default "[OPTION...]" in help/usage output.
  * @param con		context
  * @param text		replacement text
  */
-/*@-fcnuse@*/
-void poptSetOtherOptionHelp(poptContext con, const char * text)
-	/*@modifies con @*/;
-/*@=fcnuse@*/
+void poptSetOtherOptionHelp(poptContext con, const char * text);
 
-/** \ingroup popt
+/**
  * Return argv[0] from context.
  * @param con		context
  * @return		argv[0]
  */
-/*@-fcnuse@*/
-/*@observer@*/
-const char * poptGetInvocationName(poptContext con)
-	/*@*/;
-/*@=fcnuse@*/
+const char * poptGetInvocationName(poptContext con);
 
-/** \ingroup popt
+/**
  * Shuffle argv pointers to remove stripped args, returns new argc.
  * @param con		context
  * @param argc		no. of args
  * @param argv		arg vector
  * @return		new argc
  */
-/*@-fcnuse@*/
-int poptStrippedArgv(poptContext con, int argc, char ** argv)
-	/*@modifies *argv @*/;
-/*@=fcnuse@*/
+int poptStrippedArgv(poptContext con, int argc, char ** argv);
+
+/**
+ * Add a string to an argv array.
+ * @retval *argvp	argv array
+ * @param argInfo	(unused)
+ * @param val		string arg to add (using strdup)
+ * @return		0 on success, POPT_ERROR_NULLARG/POPT_ERROR_BADOPERATION
+ */
+int poptSaveString(const char *** argvp, unsigned int argInfo,
+		const char * val);
+
+/**
+ * Save a long long, performing logical operation with value.
+ * @warning Alignment check may be too strict on certain platorms.
+ * @param arg		integer pointer, aligned on int boundary.
+ * @param argInfo	logical operation (see POPT_ARGFLAG_*)
+ * @param aLongLong	value to use
+ * @return		0 on success, POPT_ERROR_NULLARG/POPT_ERROR_BADOPERATION
+ */
+int poptSaveLongLong(long long * arg, unsigned int argInfo,
+		long long aLongLong);
 
 /**
  * Save a long, performing logical operation with value.
@@ -535,12 +521,17 @@ int poptStrippedArgv(poptContext con, int argc, char ** argv)
  * @param aLong		value to use
  * @return		0 on success, POPT_ERROR_NULLARG/POPT_ERROR_BADOPERATION
  */
-/*@-incondefs@*/
-/*@unused@*/
-int poptSaveLong(/*@null@*/ long * arg, int argInfo, long aLong)
-	/*@modifies *arg @*/
-	/*@requires maxSet(arg) >= 0 /\ maxRead(arg) == 0 @*/;
-/*@=incondefs@*/
+int poptSaveLong(long * arg, unsigned int argInfo, long aLong);
+
+/**
+ * Save a short integer, performing logical operation with value.
+ * @warning Alignment check may be too strict on certain platorms.
+ * @param arg		short pointer, aligned on short boundary.
+ * @param argInfo	logical operation (see POPT_ARGFLAG_*)
+ * @param aLong		value to use
+ * @return		0 on success, POPT_ERROR_NULLARG/POPT_ERROR_BADOPERATION
+ */
+int poptSaveShort(short * arg, unsigned int argInfo, long aLong);
 
 /**
  * Save an integer, performing logical operation with value.
@@ -550,14 +541,40 @@ int poptSaveLong(/*@null@*/ long * arg, int argInfo, long aLong)
  * @param aLong		value to use
  * @return		0 on success, POPT_ERROR_NULLARG/POPT_ERROR_BADOPERATION
  */
-/*@-incondefs@*/
-/*@unused@*/
-int poptSaveInt(/*@null@*/ int * arg, int argInfo, long aLong)
-	/*@modifies *arg @*/
-	/*@requires maxSet(arg) >= 0 /\ maxRead(arg) == 0 @*/;
-/*@=incondefs@*/
+int poptSaveInt(int * arg, unsigned int argInfo, long aLong);
+
+/* The bit set typedef. */
+typedef struct poptBits_s {
+    unsigned int bits[1];
+} * poptBits;
+
+#define _POPT_BITS_N    1024U	/*!< estimated population */
+#define _POPT_BITS_M    ((3U * _POPT_BITS_N) / 2U)
+#define _POPT_BITS_K    16U	/*!< no. of linear hash combinations */
+
+extern unsigned int _poptBitsN;
+extern  unsigned int _poptBitsM;
+extern  unsigned int _poptBitsK;
+
+int poptBitsAdd(poptBits bits, const char * s);
+int poptBitsChk(poptBits bits, const char * s);
+int poptBitsClr(poptBits bits);
+int poptBitsDel(poptBits bits, const char * s);
+int poptBitsIntersect(poptBits * ap, const poptBits b);
+int poptBitsUnion(poptBits * ap, const poptBits b);
+int poptBitsArgs(poptContext con, poptBits * ap);
+
+/**
+ * Save a string into a bit set (experimental).
+ * @retval *bits	bit set (lazily malloc'd if NULL)
+ * @param argInfo	logical operation (see POPT_ARGFLAG_*)
+ * @param s		string to add to bit set
+ * @return		0 on success, POPT_ERROR_NULLARG/POPT_ERROR_BADOPERATION
+ */
+int poptSaveBits(poptBits * bitsp, unsigned int argInfo,
+		const char * s);
+
 
-/*@=type@*/
 #ifdef  __cplusplus
 }
 #endif

popt/poptconfig.c

@@ -1,5 +1,5 @@
 /** \ingroup popt
- * \file popt/poptconfig.c
+ * @file
  */
 
 /* (C) 1998-2002 Red Hat, Inc. -- Licensing details are in the COPYING
@@ -8,54 +8,300 @@
 
 #include "system.h"
 #include "poptint.h"
-/*@access poptContext @*/
+#include <sys/stat.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <errno.h>
 
-/*@-compmempass@*/	/* FIX: item->option.longName kept, not dependent. */
-static void configLine(poptContext con, char * line)
-	/*@modifies con @*/
+#if defined(HAVE_FNMATCH_H)
+#include <fnmatch.h>
+
+#endif
+
+#if defined(HAVE_GLOB_H)
+#include <glob.h>
+
+#if !defined(HAVE_GLOB_PATTERN_P)
+/* Return nonzero if PATTERN contains any metacharacters.
+   Metacharacters can be quoted with backslashes if QUOTE is nonzero.  */
+static int
+glob_pattern_p (const char * pattern, int quote)
 {
-    size_t nameLength;
+    const char * p;
+    int open = 0;
+
+    for (p = pattern; *p != '\0'; ++p)
+    switch (*p) {
+    case '?':
+    case '*':
+	return 1;
+	break;
+    case '\\':
+	if (quote && p[1] != '\0')
+	  ++p;
+	break;
+    case '[':
+	open = 1;
+	break;
+    case ']':
+	if (open)
+	  return 1;
+	break;
+    }
+    return 0;
+}
+#endif	/* !defined(__GLIBC__) */
+
+static int poptGlobFlags = 0;
+
+static int poptGlob_error(UNUSED(const char * epath),
+		UNUSED(int eerrno))
+{
+    return 1;
+}
+#endif	/* HAVE_GLOB_H */
+
+/**
+ * Return path(s) from a glob pattern.
+ * @param con		context
+ * @param pattern	glob pattern
+ * @retval *acp		no. of paths
+ * @retval *avp		array of paths
+ * @return		0 on success
+ */
+static int poptGlob(UNUSED(poptContext con), const char * pattern,
+		int * acp, const char *** avp)
+{
+    const char * pat = pattern;
+    int rc = 0;		/* assume success */
+
+#if defined(HAVE_GLOB_H)
+    if (glob_pattern_p(pat, 0)) {
+	glob_t _g, *pglob = &_g;
+
+	if (!(rc = glob(pat, poptGlobFlags, poptGlob_error, pglob))) {
+	    if (acp) {
+		*acp = (int) pglob->gl_pathc;
+		pglob->gl_pathc = 0;
+	    }
+	    if (avp) {
+		*avp = (const char **) pglob->gl_pathv;
+		pglob->gl_pathv = NULL;
+	    }
+	    globfree(pglob);
+	} else if (rc == GLOB_NOMATCH) {
+	    *avp = NULL;
+	    *acp = 0;
+	    rc = 0;
+	} else
+	    rc = POPT_ERROR_ERRNO;
+    } else
+#endif	/* HAVE_GLOB_H */
+    {
+	if (acp)
+	    *acp = 1;
+	if (avp && (*avp = calloc((size_t)(1 + 1), sizeof (**avp))) != NULL)
+	    (*avp)[0] = xstrdup(pat);
+    }
+
+    return rc;
+}
+
+
+int poptSaneFile(const char * fn)
+{
+    struct stat sb;
+
+    if (fn == NULL || strstr(fn, ".rpmnew") || strstr(fn, ".rpmsave"))
+	return 0;
+    if (stat(fn, &sb) == -1)
+	return 0;
+    if (!S_ISREG(sb.st_mode))
+	return 0;
+    if (sb.st_mode & (S_IXUSR|S_IXGRP|S_IXOTH))
+	return 0;
+    return 1;
+}
+
+int poptReadFile(const char * fn, char ** bp, size_t * nbp, int flags)
+{
+    int fdno;
+    char * b = NULL;
+    off_t nb = 0;
+    char * s, * t, * se;
+    int rc = POPT_ERROR_ERRNO;	/* assume failure */
+
+    fdno = open(fn, O_RDONLY);
+    if (fdno < 0)
+	goto exit;
+
+    if ((nb = lseek(fdno, 0, SEEK_END)) == (off_t)-1
+     || (uintmax_t)nb >= SIZE_MAX
+     || lseek(fdno, 0, SEEK_SET) == (off_t)-1
+     || (b = calloc(sizeof(*b), (size_t)nb + 1)) == NULL
+     || read(fdno, (char *)b, (size_t)nb) != (ssize_t)nb)
+    {
+	int oerrno = errno;
+	(void) close(fdno);
+	if (nb != (off_t)-1 && (uintmax_t)nb >= SIZE_MAX)
+	    errno = -EOVERFLOW;
+	else
+	    errno = oerrno;
+	goto exit;
+    }
+    if (close(fdno) == -1)
+	goto exit;
+    if (b == NULL) {
+	rc = POPT_ERROR_MALLOC;
+	goto exit;
+    }
+    rc = 0;
+
+   /* Trim out escaped newlines. */
+    if (flags & POPT_READFILE_TRIMNEWLINES)
+    {
+	for (t = b, s = b, se = b + nb; *s && s < se; s++) {
+	    switch (*s) {
+	    case '\\':
+		if (s[1] == '\n') {
+		    s++;
+		    continue;
+		}
+		/* fallthrough */
+	    default:
+		*t++ = *s;
+		break;
+	    }
+	}
+	*t++ = '\0';
+	nb = (off_t)(t - b);
+    }
+
+exit:
+    if (rc != 0) {
+	if (b)
+	    free(b);
+	b = NULL;
+	nb = 0;
+    }
+    if (bp)
+	*bp = b;
+    else if (b)
+	free(b);
+    if (nbp)
+	*nbp = (size_t)nb;
+    return rc;
+}
+
+/**
+ * Check for application match.
+ * @param con		context
+ * @param s		config application name
+ * return		0 if config application matches
+ */
+static int configAppMatch(poptContext con, const char * s)
+{
+    int rc = 1;
+
+    if (con->appName == NULL)	/* XXX can't happen. */
+	return rc;
+
+#if defined(HAVE_GLOB_H) && defined(HAVE_FNMATCH_H)
+    if (glob_pattern_p(s, 1)) {
+	static int flags = FNM_PATHNAME | FNM_PERIOD;
+#ifdef FNM_EXTMATCH
+	flags |= FNM_EXTMATCH;
+#endif
+	rc = fnmatch(s, con->appName, flags);
+    } else
+#endif
+	rc = strcmp(s, con->appName);
+    return rc;
+}
+
+static int poptConfigLine(poptContext con, char * line)
+{
+    char *b = NULL;
+    size_t nb = 0;
+    char * se = line;
+    const char * appName;
     const char * entryType;
     const char * opt;
-    poptItem item = (poptItem) alloca(sizeof(*item));
+    struct poptItem_s item_buf;
+    poptItem item = &item_buf;
     int i, j;
+    int rc = POPT_ERROR_BADCONFIG;
 
     if (con->appName == NULL)
-	return;
-    nameLength = strlen(con->appName);
+	goto exit;
     
-/*@-boundswrite@*/
     memset(item, 0, sizeof(*item));
 
-    if (strncmp(line, con->appName, nameLength)) return;
+    appName = se;
+    while (*se != '\0' && !_isspaceptr(se)) se++;
+    if (*se == '\0')
+	goto exit;
+    else
+	*se++ = '\0';
 
-    line += nameLength;
-    if (*line == '\0' || !isSpace(line)) return;
+    if (configAppMatch(con, appName)) goto exit;
 
-    while (*line != '\0' && isSpace(line)) line++;
-    entryType = line;
-    while (*line == '\0' || !isSpace(line)) line++;
-    *line++ = '\0';
+    while (*se != '\0' && _isspaceptr(se)) se++;
+    entryType = se;
+    while (*se != '\0' && !_isspaceptr(se)) se++;
+    if (*se != '\0') *se++ = '\0';
 
-    while (*line != '\0' && isSpace(line)) line++;
-    if (*line == '\0') return;
-    opt = line;
-    while (*line == '\0' || !isSpace(line)) line++;
-    *line++ = '\0';
+    while (*se != '\0' && _isspaceptr(se)) se++;
+    if (*se == '\0') goto exit;
+    opt = se;
+    while (*se != '\0' && !_isspaceptr(se)) se++;
+    if (opt[0] == '-' && *se == '\0') goto exit;
+    if (*se != '\0') *se++ = '\0';
 
-    while (*line != '\0' && isSpace(line)) line++;
-    if (*line == '\0') return;
+    while (*se != '\0' && _isspaceptr(se)) se++;
+    if (opt[0] == '-' && *se == '\0') goto exit;
 
-    /*@-temptrans@*/ /* FIX: line alias is saved */
     if (opt[0] == '-' && opt[1] == '-')
 	item->option.longName = opt + 2;
     else if (opt[0] == '-' && opt[2] == '\0')
 	item->option.shortName = opt[1];
-    /*@=temptrans@*/
+    else {
+	const char * fn = opt;
 
-    if (poptParseArgvString(line, &item->argc, &item->argv)) return;
+	/* XXX handle globs and directories in fn? */
+	if ((rc = poptReadFile(fn, &b, &nb, POPT_READFILE_TRIMNEWLINES)) != 0)
+	    goto exit;
+	if (b == NULL || nb == 0)
+	    goto exit;
+
+	/* Append remaining text to the interpolated file option text. */
+	if (*se != '\0') {
+	    size_t nse = strlen(se) + 1;
+	    if ((b = realloc(b, (nb + nse))) == NULL)	/* XXX can't happen */
+		goto exit;
+	    (void) stpcpy( stpcpy(&b[nb-1], " "), se);
+	    nb += nse;
+	}
+	se = b;
+
+	/* Use the basename of the path as the long option name. */
+	{   const char * longName = strrchr(fn, '/');
+	    if (longName != NULL)
+		longName++;
+	    else
+		longName = fn;
+	    if (longName == NULL)	/* XXX can't happen. */
+		goto exit;
+	    /* Single character basenames are treated as short options. */
+	    if (longName[1] != '\0')
+		item->option.longName = longName;
+	    else
+		item->option.shortName = longName[0];
+	}
+    }
+
+    if (poptParseArgvString(se, &item->argc, &item->argv)) goto exit;
 
-    /*@-modobserver@*/
     item->option.argInfo = POPT_ARGFLAG_DOC_HIDDEN;
     for (i = 0, j = 0; i < item->argc; i++, j++) {
 	const char * f;
@@ -81,103 +327,183 @@ static void configLine(poptContext con, char * line)
 	item->argv[j] = NULL;
 	item->argc = j;
     }
-    /*@=modobserver@*/
-/*@=boundswrite@*/
 	
-    /*@-nullstate@*/ /* FIX: item->argv[] may be NULL */
     if (!strcmp(entryType, "alias"))
-	(void) poptAddItem(con, item, 0);
+	rc = poptAddItem(con, item, 0);
     else if (!strcmp(entryType, "exec"))
-	(void) poptAddItem(con, item, 1);
-    /*@=nullstate@*/
+	rc = poptAddItem(con, item, 1);
+exit:
+    rc = 0;	/* XXX for now, always return success */
+    if (b)
+	free(b);
+    return rc;
 }
-/*@=compmempass@*/
 
 int poptReadConfigFile(poptContext con, const char * fn)
 {
-    const char * file, * chptr, * end;
-    char * buf;
-/*@dependent@*/ char * dst;
-    int fd, rc;
-    off_t fileLength;
-
-    fd = open(fn, O_RDONLY);
-    if (fd < 0)
-	return (errno == ENOENT ? 0 : POPT_ERROR_ERRNO);
-
-    fileLength = lseek(fd, 0, SEEK_END);
-    if (fileLength == -1 || lseek(fd, 0, 0) == -1) {
-	rc = errno;
-	(void) close(fd);
-	errno = rc;
-	return POPT_ERROR_ERRNO;
-    }
-
-    file = alloca(fileLength + 1);
-    if (read(fd, (char *)file, fileLength) != fileLength) {
-	rc = errno;
-	(void) close(fd);
-	errno = rc;
-	return POPT_ERROR_ERRNO;
-    }
-    if (close(fd) == -1)
-	return POPT_ERROR_ERRNO;
-
-/*@-boundswrite@*/
-    dst = buf = alloca(fileLength + 1);
-
-    chptr = file;
-    end = (file + fileLength);
-    /*@-infloops@*/	/* LCL: can't detect chptr++ */
-    while (chptr < end) {
-	switch (*chptr) {
-	  case '\n':
-	    *dst = '\0';
-	    dst = buf;
-	    while (*dst && isSpace(dst)) dst++;
-	    if (*dst && *dst != '#')
-		configLine(con, dst);
-	    chptr++;
-	    /*@switchbreak@*/ break;
-	  case '\\':
-	    *dst++ = *chptr++;
-	    if (chptr < end) {
-		if (*chptr == '\n') 
-		    dst--, chptr++;	
-		    /* \ at the end of a line does not insert a \n */
-		else
-		    *dst++ = *chptr++;
-	    }
-	    /*@switchbreak@*/ break;
-	  default:
-	    *dst++ = *chptr++;
-	    /*@switchbreak@*/ break;
-	}
-    }
-    /*@=infloops@*/
-/*@=boundswrite@*/
-
-    return 0;
-}
-
-int poptReadDefaultConfig(poptContext con, /*@unused@*/ UNUSED(int useEnv))
-{
-    char * fn, * home;
+    char * b = NULL, *be;
+    size_t nb = 0;
+    const char *se;
+    char *t = NULL, *te;
     int rc;
 
-    if (con->appName == NULL) return 0;
-
-    rc = poptReadConfigFile(con, "/etc/popt");
-    if (rc) return rc;
-
-    if ((home = getenv("HOME"))) {
-	size_t bufsize = strlen(home) + 20;
-	fn = alloca(bufsize);
-	if (fn == NULL) return 0;
-	snprintf(fn, bufsize, "%s/.popt", home);
-	rc = poptReadConfigFile(con, fn);
-	if (rc) return rc;
+    if ((rc = poptReadFile(fn, &b, &nb, POPT_READFILE_TRIMNEWLINES)) != 0)
+	return (errno == ENOENT ? 0 : rc);
+    if (b == NULL || nb == 0) {
+	rc = POPT_ERROR_BADCONFIG;
+	goto exit;
     }
 
-    return 0;
+    if ((t = malloc(nb + 1)) == NULL)
+	goto exit;
+    te = t;
+
+    be = (b + nb);
+    for (se = b; se < be; se++) {
+	switch (*se) {
+	  case '\n':
+	    *te = '\0';
+	    te = t;
+	    while (*te && _isspaceptr(te)) te++;
+	    if (*te && *te != '#')
+		if ((rc = poptConfigLine(con, te)) != 0)
+		    goto exit;
+	    break;
+	  case '\\':
+	    *te = *se++;
+	    /* \ at the end of a line does not insert a \n */
+	    if (se < be && *se != '\n') {
+		te++;
+		*te++ = *se;
+	    }
+	    break;
+	  default:
+	    *te++ = *se;
+	    break;
+	}
+    }
+    rc = 0;
+
+exit:
+    free(t);
+    if (b)
+	free(b);
+    return rc;
+}
+
+int poptReadConfigFiles(poptContext con, const char * paths)
+{
+    char * buf = (paths ? xstrdup(paths) : NULL);
+    const char * p;
+    char * pe;
+    int rc = 0;		/* assume success */
+
+    for (p = buf; p != NULL && *p != '\0'; p = pe) {
+	const char ** av = NULL;
+	int ac = 0;
+	int i;
+	int xx;
+
+	/* locate start of next path element */
+	pe = strchr(p, ':');
+	if (pe != NULL && *pe == ':')
+	    *pe++ = '\0';
+	else
+	    pe = (char *) (p + strlen(p));
+
+	xx = poptGlob(con, p, &ac, &av);
+
+	/* work-off each resulting file from the path element */
+	for (i = 0; i < ac; i++) {
+	    const char * fn = av[i];
+	    if (!poptSaneFile(fn))
+		continue;
+	    xx = poptReadConfigFile(con, fn);
+	    if (xx && rc == 0)
+		rc = xx;
+	    free((void *)av[i]);
+	    av[i] = NULL;
+	}
+	free(av);
+	av = NULL;
+    }
+
+    if (buf)
+	free(buf);
+
+    return rc;
+}
+
+int poptReadDefaultConfig(poptContext con, UNUSED(int useEnv))
+{
+    char * home;
+    struct stat sb;
+    int rc = 0;		/* assume success */
+
+    if (con->appName == NULL) goto exit;
+
+    rc = poptReadConfigFile(con, POPT_SYSCONFDIR "/popt");
+    if (rc) goto exit;
+
+#if defined(HAVE_GLOB_H)
+    if (!stat(POPT_SYSCONFDIR "/popt.d", &sb) && S_ISDIR(sb.st_mode)) {
+	const char ** av = NULL;
+	int ac = 0;
+	int i;
+
+	if ((rc = poptGlob(con, POPT_SYSCONFDIR "/popt.d/*", &ac, &av)) == 0) {
+	    for (i = 0; rc == 0 && i < ac; i++) {
+		const char * fn = av[i];
+		if (!poptSaneFile(fn))
+		    continue;
+		rc = poptReadConfigFile(con, fn);
+		free((void *)av[i]);
+		av[i] = NULL;
+	    }
+	    free(av);
+	    av = NULL;
+	}
+    }
+    if (rc) goto exit;
+#endif
+
+    if ((home = getenv("HOME"))) {
+	char * fn = malloc(strlen(home) + 20);
+	if (fn != NULL) {
+	    (void) stpcpy(stpcpy(fn, home), "/.popt");
+	    rc = poptReadConfigFile(con, fn);
+	    free(fn);
+	} else
+	    rc = POPT_ERROR_ERRNO;
+	if (rc) goto exit;
+    }
+
+exit:
+    return rc;
+}
+
+poptContext
+poptFini(poptContext con)
+{
+    return poptFreeContext(con);
+}
+
+poptContext
+poptInit(int argc, const char ** argv,
+		const struct poptOption * options, const char * configPaths)
+{
+    poptContext con = NULL;
+    const char * argv0;
+
+    if (argv == NULL || argv[0] == NULL || options == NULL)
+	return con;
+
+    if ((argv0 = strrchr(argv[0], '/')) != NULL) argv0++;
+    else argv0 = argv[0];
+   
+    con = poptGetContext(argv0, argc, (const char **)argv, options, 0);
+    if (con != NULL&& poptReadConfigFiles(con, configPaths))
+	con = poptFini(con);
+
+    return con;
 }

popt/poptint.c

@@ -0,0 +1,194 @@
+#include "system.h"
+#include <stdarg.h>
+#include <errno.h>
+#ifdef HAVE_LANGINFO_H
+#include <langinfo.h>
+#endif
+#include "poptint.h"
+
+/* Any pair of 32 bit hashes can be used. lookup3.c generates pairs, will do. */
+#define _JLU3_jlu32lpair        1
+#define	jlu32lpair	poptJlu32lpair
+#include "lookup3.c"
+
+const char *
+POPT_prev_char (const char *str)
+{
+    const char *p = str;
+
+    while (1) {
+	p--;
+	if (((unsigned)*p & 0xc0) != (unsigned)0x80)
+	    return p;
+    }
+}
+
+const char *
+POPT_next_char (const char *str)
+{
+    const char *p = str;
+
+    while (*p != '\0') {
+	p++;
+	if (((unsigned)*p & 0xc0) != (unsigned)0x80)
+	    break;
+    }
+    return p;
+}
+
+#if !defined(POPT_fprintf)	/* XXX lose all the goop ... */
+
+#if defined(ENABLE_NLS) && defined(HAVE_LIBINTL_H) && defined(HAVE_DCGETTEXT)
+/*
+ * Rebind a "UTF-8" codeset for popt's internal use.
+ */
+char *
+POPT_dgettext(const char * dom, const char * str)
+{
+    char * codeset = NULL;
+    char * retval = NULL;
+
+    if (!dom) 
+	dom = textdomain(NULL);
+    codeset = bind_textdomain_codeset(dom, NULL);
+    bind_textdomain_codeset(dom, "UTF-8");
+    retval = dgettext(dom, str);
+    bind_textdomain_codeset(dom, codeset);
+
+    return retval;
+}
+#endif
+
+#ifdef HAVE_ICONV
+/**
+ * Return malloc'd string converted from UTF-8 to current locale.
+ * @param istr		input string (UTF-8 encoding assumed)
+ * @return		localized string
+ */
+static char *
+strdup_locale_from_utf8 (char * istr)
+{
+    char * codeset = NULL;
+    char * ostr = NULL;
+    iconv_t cd;
+
+    if (istr == NULL)
+	return NULL;
+
+#ifdef HAVE_LANGINFO_H
+    codeset = nl_langinfo ((nl_item)CODESET);
+#endif
+
+    if (codeset != NULL && strcmp(codeset, "UTF-8") != 0
+     && (cd = iconv_open(codeset, "UTF-8")) != (iconv_t)-1)
+    {
+	char * shift_pin = NULL;
+	size_t db = strlen(istr);
+	char * dstr = malloc((db + 1) * sizeof(*dstr));
+	char * dstr_tmp;
+	char * pin = istr;
+	char * pout = dstr;
+	size_t ib = db;
+	size_t ob = db;
+	size_t err;
+
+	if (dstr == NULL) {
+	    (void) iconv_close(cd);
+	    return NULL;
+	}
+	err = iconv(cd, NULL, NULL, NULL, NULL);
+	while (1) {
+	    *pout = '\0';
+	    err = iconv(cd, &pin, &ib, &pout, &ob);
+	    if (err != (size_t)-1) {
+		if (shift_pin == NULL) {
+		    shift_pin = pin;
+		    pin = NULL;
+		    ib = 0;
+		    continue;
+		}
+	    } else
+	    switch (errno) {
+	    case E2BIG:
+	    {	size_t used = (size_t)(pout - dstr);
+		db *= 2;
+		dstr_tmp = realloc(dstr, (db + 1) * sizeof(*dstr));
+		if (dstr_tmp == NULL) {
+		    free(dstr);
+		    (void) iconv_close(cd);
+		    return NULL;
+		}
+		dstr = dstr_tmp;
+		pout = dstr + used;
+		ob = db - used;
+		continue;
+	    }   break;
+	    case EINVAL:
+	    case EILSEQ:
+	    default:
+		break;
+	    }
+	    break;
+	}
+	(void) iconv_close(cd);
+	*pout = '\0';
+	ostr = xstrdup(dstr);
+	free(dstr);
+    } else
+	ostr = xstrdup(istr);
+
+    return ostr;
+}
+#endif
+
+int
+POPT_fprintf (FILE * stream, const char * format, ...)
+{
+    char * b = NULL, * ob = NULL;
+    int rc;
+    va_list ap;
+
+#if defined(HAVE_VASPRINTF)
+    va_start(ap, format);
+    if ((rc = vasprintf(&b, format, ap)) < 0)
+	b = NULL;
+    va_end(ap);
+#else
+    size_t nb = (size_t)1;
+
+    /* HACK: add +1 to the realloc no. of bytes "just in case". */
+    /* XXX Likely unneeded, the issues wrto vsnprintf(3) return b0rkage have
+     * to do with whether the final '\0' is counted (or not). The code
+     * below already adds +1 for the (possibly already counted) trailing NUL.
+     */
+    while ((b = realloc(b, nb+1)) != NULL) {
+	va_start(ap, format);
+	rc = vsnprintf(b, nb, format, ap);
+	va_end(ap);
+	if (rc > -1) {	/* glibc 2.1 */
+	    if ((size_t)rc < nb)
+		break;
+	    nb = (size_t)(rc + 1);	/* precise buffer length known */
+	} else 		/* glibc 2.0 */
+	    nb += (nb < (size_t)100 ? (size_t)100 : nb);
+	ob = b;
+    }
+#endif
+
+    rc = 0;
+    if (b != NULL) {
+#ifdef HAVE_ICONV
+	ob = strdup_locale_from_utf8(b);
+	if (ob != NULL) {
+	    rc = fprintf(stream, "%s", ob);
+	    free(ob);
+	} else
+#endif
+	    rc = fprintf(stream, "%s", b);
+	free (b);
+    }
+
+    return rc;
+}
+
+#endif	/* !defined(POPT_fprintf) */

popt/poptint.h

@@ -1,5 +1,5 @@
 /** \ingroup popt
- * \file popt/poptint.h
+ * @file
  */
 
 /* (C) 1998-2000 Red Hat, Inc. -- Licensing details are in the COPYING
@@ -9,108 +9,145 @@
 #ifndef H_POPTINT
 #define H_POPTINT
 
+#include <stdint.h>
+
 /**
  * Wrapper to free(3), hides const compilation noise, permit NULL, return NULL.
  * @param p		memory to free
  * @retval		NULL always
  */
-/*@unused@*/ static inline /*@null@*/ void *
-_free(/*@only@*/ /*@null@*/ const void * p)
-	/*@modifies p @*/
+static inline void *
+_free(const void * p)
 {
     if (p != NULL)	free((void *)p);
     return NULL;
 }
 
-static inline int
-isSpace(const char *ptr)
-{
-    return isspace(*(unsigned char *)ptr);
-}
-
 /* Bit mask macros. */
-/*@-exporttype -redef @*/
 typedef	unsigned int __pbm_bits;
-/*@=exporttype =redef @*/
 #define	__PBM_NBITS		(8 * sizeof (__pbm_bits))
 #define	__PBM_IX(d)		((d) / __PBM_NBITS)
 #define __PBM_MASK(d)		((__pbm_bits) 1 << (((unsigned)(d)) % __PBM_NBITS))
-/*@-exporttype -redef @*/
 typedef struct {
     __pbm_bits bits[1];
 } pbm_set;
-/*@=exporttype =redef @*/
 #define	__PBM_BITS(set)	((set)->bits)
 
-#define	PBM_ALLOC(d)	calloc(__PBM_IX (d) + 1, sizeof(__pbm_bits))
+#define	PBM_ALLOC(d)	calloc(__PBM_IX (d) + 1, sizeof(pbm_set))
 #define	PBM_FREE(s)	_free(s);
 #define PBM_SET(d, s)   (__PBM_BITS (s)[__PBM_IX (d)] |= __PBM_MASK (d))
 #define PBM_CLR(d, s)   (__PBM_BITS (s)[__PBM_IX (d)] &= ~__PBM_MASK (d))
 #define PBM_ISSET(d, s) ((__PBM_BITS (s)[__PBM_IX (d)] & __PBM_MASK (d)) != 0)
 
+extern void poptJlu32lpair(const void *key, size_t size,
+                uint32_t *pc, uint32_t *pb);
+
+/** \ingroup popt
+ * Typedef's for string and array of strings.
+ */
+typedef const char * poptString;
+typedef poptString * poptArgv;
+
+/** \ingroup popt
+ * A union to simplify opt->arg access without casting.
+ */
+typedef union poptArg_u {
+    void * ptr;
+    int * intp;
+    short * shortp;
+    long * longp;
+    long long * longlongp;
+    float * floatp;
+    double * doublep;
+    const char ** argv;
+    poptCallbackType cb;
+    poptOption opt;
+} poptArg;
+
+extern unsigned int _poptArgMask;
+extern unsigned int _poptGroupMask;
+
+#define	poptArgType(_opt)	((_opt)->argInfo & _poptArgMask)
+#define	poptGroup(_opt)		((_opt)->argInfo & _poptGroupMask)
+
+#define	F_ISSET(_opt, _FLAG)	((_opt)->argInfo & POPT_ARGFLAG_##_FLAG)
+#define	LF_ISSET(_FLAG)		(argInfo & POPT_ARGFLAG_##_FLAG)
+#define	CBF_ISSET(_opt, _FLAG)	((_opt)->argInfo & POPT_CBFLAG_##_FLAG)
+
+/* XXX sick hack to preserve pretense of a popt-1.x ABI. */
+#define	poptSubstituteHelpI18N(opt) \
+  { if ((opt) == poptHelpOptions) (opt) = poptHelpOptionsI18N; }
+
 struct optionStackEntry {
     int argc;
-/*@only@*/ /*@null@*/
-    const char ** argv;
-/*@only@*/ /*@null@*/
+    poptArgv argv;
     pbm_set * argb;
     int next;
-/*@only@*/ /*@null@*/
-    const char * nextArg;
-/*@observer@*/ /*@null@*/
+    char * nextArg;
     const char * nextCharArg;
-/*@dependent@*/ /*@null@*/
     poptItem currAlias;
     int stuffed;
 };
 
 struct poptContext_s {
     struct optionStackEntry optionStack[POPT_OPTION_DEPTH];
-/*@dependent@*/
     struct optionStackEntry * os;
-/*@owned@*/ /*@null@*/
-    const char ** leftovers;
+    poptArgv leftovers;
     int numLeftovers;
+    int allocLeftovers;
     int nextLeftover;
-/*@keep@*/
     const struct poptOption * options;
     int restLeftover;
-/*@only@*/ /*@null@*/
     const char * appName;
-/*@only@*/ /*@null@*/
     poptItem aliases;
     int numAliases;
-    int flags;
-/*@owned@*/ /*@null@*/
+    unsigned int flags;
     poptItem execs;
     int numExecs;
-/*@only@*/ /*@null@*/
-    const char ** finalArgv;
+    char * execFail;
+    poptArgv finalArgv;
     int finalArgvCount;
     int finalArgvAlloced;
-/*@dependent@*/ /*@null@*/
+    int (*maincall) (int argc, const char **argv);
     poptItem doExec;
-/*@only@*/
     const char * execPath;
     int execAbsolute;
-/*@only@*/ /*@relnull@*/
     const char * otherHelp;
-/*@null@*/
     pbm_set * arg_strip;
 };
 
-#ifdef HAVE_LIBINTL_H
+#if defined(POPT_fprintf)
+#define	POPT_dgettext	dgettext
+#else
+#ifdef HAVE_ICONV
+#include <iconv.h>
+#endif
+
+#if defined(HAVE_DCGETTEXT)
+char *POPT_dgettext(const char * dom, const char * str);
+#endif
+
+FORMAT(printf, 2, 3)
+int   POPT_fprintf (FILE* stream, const char *format, ...);
+#endif	/* !defined(POPT_fprintf) */
+
+const char *POPT_prev_char (const char *str);
+const char *POPT_next_char (const char *str);
+
+#endif
+
+#if defined(ENABLE_NLS) && defined(HAVE_LIBINTL_H)
 #include <libintl.h>
 #endif
 
-#if defined(HAVE_GETTEXT) && !defined(__LCLINT__)
+#if defined(ENABLE_NLS) && defined(HAVE_GETTEXT)
 #define _(foo) gettext(foo)
 #else
 #define _(foo) foo
 #endif
 
-#if defined(HAVE_DCGETTEXT) && !defined(__LCLINT__)
-#define D_(dom, str) dgettext(dom, str)
+#if defined(ENABLE_NLS) && defined(HAVE_LIBINTL_H) && defined(HAVE_DCGETTEXT)
+#define D_(dom, str) POPT_dgettext(dom, str)
 #define POPT_(foo) D_("popt", foo)
 #else
 #define D_(dom, str) str
@@ -119,4 +156,3 @@ struct poptContext_s {
 
 #define N_(foo) foo
 
-#endif

popt/poptparse.c

@@ -1,5 +1,5 @@
 /** \ingroup popt
- * \file popt/poptparse.c
+ * @file
  */
 
 /* (C) 1998-2002 Red Hat, Inc. -- Licensing details are in the COPYING
@@ -8,11 +8,8 @@
 
 #include "system.h"
 
-#include "poptint.h"
-
 #define POPT_ARGV_ARRAY_GROW_DELTA 5
 
-/*@-boundswrite@*/
 int poptDupArgv(int argc, const char **argv,
 		int * argcPtr, const char *** argvPtr)
 {
@@ -34,13 +31,13 @@ int poptDupArgv(int argc, const char **argv,
 	return POPT_ERROR_MALLOC;
     argv2 = (void *) dst;
     dst += (argc + 1) * sizeof(*argv);
+    *dst = '\0';
 
-    /*@-branchstate@*/
     for (i = 0; i < argc; i++) {
 	argv2[i] = dst;
-	dst += strlcpy(dst, argv[i], nb) + 1;
+	dst = stpcpy(dst, argv[i]);
+	dst++;	/* trailing NUL */
     }
-    /*@=branchstate@*/
     argv2[argc] = NULL;
 
     if (argvPtr) {
@@ -53,21 +50,25 @@ int poptDupArgv(int argc, const char **argv,
 	*argcPtr = argc;
     return 0;
 }
-/*@=boundswrite@*/
 
-/*@-bounds@*/
 int poptParseArgvString(const char * s, int * argcPtr, const char *** argvPtr)
 {
     const char * src;
     char quote = '\0';
     int argvAlloced = POPT_ARGV_ARRAY_GROW_DELTA;
     const char ** argv = malloc(sizeof(*argv) * argvAlloced);
+    const char ** argv_tmp;
     int argc = 0;
-    int buflen = strlen(s) + 1;
-    char * buf = memset(alloca(buflen), 0, buflen);
+    size_t buflen = strlen(s) + 1;
+    char * buf, * bufOrig = NULL;
     int rc = POPT_ERROR_MALLOC;
 
     if (argv == NULL) return rc;
+    buf = bufOrig = calloc((size_t)1, buflen);
+    if (buf == NULL) {
+	free(argv);
+	return rc;
+    }
     argv[argc] = buf;
 
     for (src = s; *src != '\0'; src++) {
@@ -83,13 +84,14 @@ int poptParseArgvString(const char * s, int * argcPtr, const char *** argvPtr)
 		if (*src != quote) *buf++ = '\\';
 	    }
 	    *buf++ = *src;
-	} else if (isSpace(src)) {
+	} else if (_isspaceptr(src)) {
 	    if (*argv[argc] != '\0') {
 		buf++, argc++;
 		if (argc == argvAlloced) {
 		    argvAlloced += POPT_ARGV_ARRAY_GROW_DELTA;
-		    argv = realloc(argv, sizeof(*argv) * argvAlloced);
-		    if (argv == NULL) goto exit;
+		    argv_tmp = realloc(argv, sizeof(*argv) * argvAlloced);
+		    if (argv_tmp == NULL) goto exit;
+		    argv = argv_tmp;
 		}
 		argv[argc] = buf;
 	    }
@@ -97,17 +99,17 @@ int poptParseArgvString(const char * s, int * argcPtr, const char *** argvPtr)
 	  case '"':
 	  case '\'':
 	    quote = *src;
-	    /*@switchbreak@*/ break;
+	    break;
 	  case '\\':
 	    src++;
 	    if (!*src) {
 		rc = POPT_ERROR_BADQUOTE;
 		goto exit;
 	    }
-	    /*@fallthrough@*/
+	    /* fallthrough */
 	  default:
 	    *buf++ = *src;
-	    /*@switchbreak@*/ break;
+	    break;
 	}
     }
 
@@ -118,29 +120,30 @@ int poptParseArgvString(const char * s, int * argcPtr, const char *** argvPtr)
     rc = poptDupArgv(argc, argv, argcPtr, argvPtr);
 
 exit:
+    if (bufOrig) free(bufOrig);
     if (argv) free(argv);
     return rc;
 }
-/*@=bounds@*/
 
 /* still in the dev stage.
- * return values, perhaps 1== file erro
+ * return values, perhaps 1== file error
  * 2== line to long
  * 3== umm.... more?
  */
-int poptConfigFileToString(FILE *fp, char ** argstrp, /*@unused@*/ UNUSED(int flags))
+int poptConfigFileToString(FILE *fp, char ** argstrp,
+		UNUSED(int flags))
 {
     char line[999];
     char * argstr;
+    char * argstr_tmp;
     char * p;
     char * q;
     char * x;
-    int t;
-    int argvlen = 0;
+    size_t t;
+    size_t argvlen = 0;
     size_t maxlinelen = sizeof(line);
     size_t linelen;
-    int maxargvlen = 480;
-    int linenum = 0;
+    size_t maxargvlen = (size_t)480;
 
     *argstrp = NULL;
 
@@ -155,11 +158,10 @@ int poptConfigFileToString(FILE *fp, char ** argstrp, /*@unused@*/ UNUSED(int fl
     if (argstr == NULL) return POPT_ERROR_MALLOC;
 
     while (fgets(line, (int)maxlinelen, fp) != NULL) {
-	linenum++;
 	p = line;
 
 	/* loop until first non-space char or EOL */
-	while( *p != '\0' && isSpace(p) )
+	while( *p != '\0' && _isspaceptr(p) )
 	    p++;
 
 	linelen = strlen(p);
@@ -173,25 +175,29 @@ int poptConfigFileToString(FILE *fp, char ** argstrp, /*@unused@*/ UNUSED(int fl
 
 	q = p;
 
-	while (*q != '\0' && (!isSpace(q)) && *q != '=')
+	while (*q != '\0' && (!_isspaceptr(q)) && *q != '=')
 	    q++;
 
-	if (isSpace(q)) {
+	if (_isspaceptr(q)) {
 	    /* a space after the name, find next non space */
 	    *q++='\0';
-	    while( *q != '\0' && isSpace(q) ) q++;
+	    while( *q != '\0' && _isspaceptr(q) ) q++;
 	}
 	if (*q == '\0') {
 	    /* single command line option (ie, no name=val, just name) */
 	    q[-1] = '\0';		/* kill off newline from fgets() call */
-	    argvlen += (t = q - p) + (sizeof(" --")-1);
+	    argvlen += (t = (size_t)(q - p)) + (sizeof(" --")-1);
 	    if (argvlen >= maxargvlen) {
 		maxargvlen = (t > maxargvlen) ? t*2 : maxargvlen*2;
-		argstr = realloc(argstr, maxargvlen);
-		if (argstr == NULL) return POPT_ERROR_MALLOC;
+		argstr_tmp = realloc(argstr, maxargvlen);
+		if (argstr_tmp == NULL) {
+		    free(argstr);
+		    return POPT_ERROR_MALLOC;
+		}
+		argstr = argstr_tmp;
 	    }
-	    strlcat(argstr, " --", maxargvlen);
-	    strlcat(argstr, p, maxargvlen);
+	    strcat(argstr, " --");
+	    strcat(argstr, p);
 	    continue;
 	}
 	if (*q != '=')
@@ -201,29 +207,33 @@ int poptConfigFileToString(FILE *fp, char ** argstrp, /*@unused@*/ UNUSED(int fl
 	*q++ = '\0';
 
 	/* find next non-space letter of value */
-	while (*q != '\0' && isSpace(q))
+	while (*q != '\0' && _isspaceptr(q))
 	    q++;
 	if (*q == '\0')
 	    continue;	/* XXX silently ignore missing value */
 
 	/* now, loop and strip all ending whitespace */
 	x = p + linelen;
-	while (isSpace(--x))
-	    *x = 0;	/* null out last char if space (including fgets() NL) */
+	while (_isspaceptr(--x))
+	    *x = '\0';	/* null out last char if space (including fgets() NL) */
 
 	/* rest of line accept */
-	t = x - p;
+	t = (size_t)(x - p);
 	argvlen += t + (sizeof("' --='")-1);
 	if (argvlen >= maxargvlen) {
 	    maxargvlen = (t > maxargvlen) ? t*2 : maxargvlen*2;
-	    argstr = realloc(argstr, maxargvlen);
-	    if (argstr == NULL) return POPT_ERROR_MALLOC;
+	    argstr_tmp = realloc(argstr, maxargvlen);
+	    if (argstr_tmp == NULL) {
+		free(argstr);
+		return POPT_ERROR_MALLOC;
+	    }
+	    argstr = argstr_tmp;
 	}
-	strlcat(argstr, " --", maxargvlen);
-	strlcat(argstr, p, maxargvlen);
-	strlcat(argstr, "=\"", maxargvlen);
-	strlcat(argstr, q, maxargvlen);
-	strlcat(argstr, "\"", maxargvlen);
+	strcat(argstr, " --");
+	strcat(argstr, p);
+	strcat(argstr, "=\"");
+	strcat(argstr, q);
+	strcat(argstr, "\"");
     }
 
     *argstrp = argstr;

popt/system.h

@@ -1,134 +1,70 @@
+/**
+ * @file
+ */
+
 #ifdef HAVE_CONFIG_H
 #include "config.h"
 #endif
 
-#if defined (__GLIBC__) && defined(__LCLINT__)
-/*@-declundef@*/
-/*@unchecked@*/
-extern __const __int32_t *__ctype_tolower;
-/*@unchecked@*/
-extern __const __int32_t *__ctype_toupper;
-/*@=declundef@*/
-#endif
-
-#ifdef __TANDEM
-# include <floss.h(floss_execvp,floss_read)>
-#endif
-
 #include <ctype.h>
 
-#include <errno.h>
-#include <fcntl.h>
-#include <limits.h>
+/* XXX isspace(3) has i18n encoding signedness issues on Solaris. */
+#define	_isspaceptr(_chp)	isspace((int)(*(unsigned const char *)(_chp)))
 
-#if HAVE_MCHECK_H 
+#ifdef HAVE_MCHECK_H
 #include <mcheck.h>
 #endif
 
-#include <stdio.h>
-#ifdef HAVE_SYS_TYPES_H
-# include <sys/types.h>
-#endif
-#ifdef STDC_HEADERS
-# include <stdlib.h>
-# include <stddef.h>
-#else
-# ifdef HAVE_STDLIB_H
-#  include <stdlib.h>
-# endif
-#endif
-#ifdef HAVE_STRING_H
-# if !defined STDC_HEADERS && defined HAVE_MEMORY_H
-#  include <memory.h>
-# endif
-# include <string.h>
-#endif
-#ifdef HAVE_STRINGS_H
-# include <strings.h>
-#endif
-#ifdef HAVE_UNISTD_H
-# include <unistd.h>
-#endif
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
 
-#ifndef __GNUC__
-#define __attribute__(x) 
-#endif
+void * xmalloc (size_t size);
 
-#ifdef __NeXT
-/* access macros are not declared in non posix mode in unistd.h -
- don't try to use posix on NeXTstep 3.3 ! */
-#include <libc.h>
-#endif
+void * xcalloc (size_t nmemb, size_t size);
 
-#if defined(__LCLINT__)
-/*@-declundef -incondefs @*/ /* LCL: missing annotation */
-/*@only@*/ /*@out@*/
-void * alloca (size_t __size)
-	/*@ensures MaxSet(result) == (__size - 1) @*/
-	/*@*/;
-/*@=declundef =incondefs @*/
-#endif
+void * xrealloc (void * ptr, size_t size);
 
-/* AIX requires this to be the first thing in the file.  */ 
-#ifndef __GNUC__
-# if HAVE_ALLOCA_H
-#  include <alloca.h>
-# else
-#  ifdef _AIX
-#pragma alloca
-#  else
-#   ifdef HAVE_ALLOCA
-#    ifndef alloca /* predefined by HP cc +Olibcalls */
-char *alloca(size_t size);
-#    endif
-#   else
-#    ifdef alloca
-#     undef alloca
-#    endif
-#    define alloca(sz) malloc(sz) /* Kludge this for now */
-#   endif
-#  endif
-# endif
-#elif !defined(alloca)
-#define alloca __builtin_alloca
-#endif
+char * xstrdup (const char *str);
 
-#ifndef HAVE_STRLCPY
-size_t strlcpy(char *d, const char *s, size_t bufsize);
-#endif
+#if !defined(HAVE_STPCPY)
+/* Copy SRC to DEST, returning the address of the terminating '\0' in DEST.  */
+static inline char * stpcpy (char *dest, const char * src) {
+    register char *d = dest;
+    register const char *s = src;
 
-#ifndef HAVE_STRLCAT
-size_t strlcat(char *d, const char *s, size_t bufsize);
-#endif
-
-#if HAVE_MCHECK_H && defined(__GNUC__)
-static inline char *
-xstrdup(const char *s)
-{
-    size_t memsize = strlen(s) + 1;
-    char *ptr = malloc(memsize);
-    if (!ptr) {
-	fprintf(stderr, "virtual memory exhausted.\n");
-	exit(EXIT_FAILURE);
-    }
-    strlcpy(ptr, s, memsize);
-    return ptr;
+    do
+	*d++ = *s;
+    while (*s++ != '\0');
+    return d - 1;
 }
-#else
-#define	xstrdup(_str)	strdup(_str)
-#endif  /* HAVE_MCHECK_H && defined(__GNUC__) */
+#endif
 
-#if HAVE___SECURE_GETENV && !defined(__LCLINT__)
+/* Memory allocation via macro defs to get meaningful locations from mtrace() */
+#if defined(HAVE_MCHECK_H) && defined(__GNUC__)
+#define	vmefail()	(fprintf(stderr, "virtual memory exhausted.\n"), exit(EXIT_FAILURE), NULL)
+#define	xmalloc(_size) 		(malloc(_size) ? : vmefail())
+#define	xcalloc(_nmemb, _size)	(calloc((_nmemb), (_size)) ? : vmefail())
+#define	xrealloc(_ptr, _size)	(realloc((_ptr), (_size)) ? : vmefail())
+#define xstrdup(_str)   (strcpy((malloc(strlen(_str)+1) ? : vmefail()), (_str)))
+#else
+#define	xmalloc(_size) 		malloc(_size)
+#define	xcalloc(_nmemb, _size)	calloc((_nmemb), (_size))
+#define	xrealloc(_ptr, _size)	realloc((_ptr), (_size))
+#define	xstrdup(_str)	strdup(_str)
+#endif  /* defined(HAVE_MCHECK_H) && defined(__GNUC__) */
+
+#if defined(HAVE_SECURE_GETENV)
+#define getenv(_s)	secure_getenv(_s)
+#elif defined(HAVE___SECURE_GETENV)
 #define	getenv(_s)	__secure_getenv(_s)
 #endif
 
-#if !defined HAVE_SNPRINTF || !defined HAVE_C99_VSNPRINTF
-#define snprintf rsync_snprintf
-int snprintf(char *str,size_t count,const char *fmt,...);
+#if !defined(__GNUC__) && !defined(__attribute__)
+#define __attribute__(x) 
 #endif
-
 #define UNUSED(x) x __attribute__((__unused__))
-
-#define PACKAGE "rsync"
+#define FORMAT(a, b, c) __attribute__((__format__ (a, b, c)))
+#define NORETURN __attribute__((__noreturn__))
 
 #include "popt.h"

receiver.c

@@ -3,7 +3,7 @@
  *
  * Copyright (C) 1996-2000 Andrew Tridgell
  * Copyright (C) 1996 Paul Mackerras
- * Copyright (C) 2003-2022 Wayne Davison
+ * Copyright (C) 2003-2023 Wayne Davison
  *
  * 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
@@ -66,9 +66,11 @@ extern char sender_file_sum[MAX_DIGEST_LEN];
 extern struct file_list *cur_flist, *first_flist, *dir_flist;
 extern filter_rule_list daemon_filter_list;
 extern OFF_T preallocated_len;
+extern int fuzzy_basis;
 
 extern struct name_num_item *xfer_sum_nni;
 extern int xfer_sum_len;
+extern int use_secure_symlinks;
 
 static struct bitbag *delayed_bits = NULL;
 static int phase = 0, redoing = 0;
@@ -213,7 +215,12 @@ int open_tmpfile(char *fnametmp, const char *fname, struct file_struct *file)
 	 * access to ensure that there is no race condition.  They will be
 	 * correctly updated after the right owner and group info is set.
 	 * (Thanks to snabb@epipe.fi for pointing this out.) */
-	fd = do_mkstemp(fnametmp, (file->mode|added_perms) & INITACCESSPERMS);
+	/* When use_secure_symlinks is on (non-chroot daemon with munge_symlinks),
+	 * use secure_mkstemp to prevent symlink race attacks on parent directories. */
+	if (use_secure_symlinks)
+		fd = secure_mkstemp(fnametmp, (file->mode|added_perms) & INITACCESSPERMS);
+	else
+		fd = do_mkstemp(fnametmp, (file->mode|added_perms) & INITACCESSPERMS);
 
 #if 0
 	/* In most cases parent directories will already exist because their
@@ -311,7 +318,12 @@ static int receive_data(int f_in, char *fname_r, int fd_r, OFF_T size_r,
 		}
 	}
 
-	while ((i = recv_token(f_in, &data)) != 0) {
+	while (1) {
+		data = NULL;
+		i = recv_token(f_in, &data);
+		if (i == 0)
+			break;
+
 		if (INFO_GTE(PROGRESS, 1))
 			show_progress(offset, total_size);
 
@@ -319,6 +331,10 @@ static int receive_data(int f_in, char *fname_r, int fd_r, OFF_T size_r,
 			maybe_send_keepalive(time(NULL), MSK_ALLOW_FLUSH | MSK_ACTIVE_RECEIVER);
 
 		if (i > 0) {
+			if (!data) {
+				rprintf(FERROR, "Invalid literal token with no data [%s]\n", who_am_i());
+				exit_cleanup(RERR_PROTOCOL);
+			}
 			if (DEBUG_GTE(DELTASUM, 3)) {
 				rprintf(FINFO,"data recv %d at %s\n",
 					i, big_num(offset));
@@ -336,6 +352,11 @@ static int receive_data(int f_in, char *fname_r, int fd_r, OFF_T size_r,
 		}
 
 		i = -(i+1);
+		if (i < 0 || i >= sum.count) {
+			rprintf(FERROR, "Invalid block index %d (count=%ld) [%s]\n",
+				i, (long)sum.count, who_am_i());
+			exit_cleanup(RERR_PROTOCOL);
+		}
 		offset2 = i * (OFF_T)sum.blength;
 		len = sum.blength;
 		if (i == (int)sum.count-1 && sum.remainder != 0)
@@ -372,7 +393,7 @@ static int receive_data(int f_in, char *fname_r, int fd_r, OFF_T size_r,
 
 	if (fd != -1 && offset > 0) {
 		if (sparse_files > 0) {
-			if (sparse_end(fd, offset) != 0)
+			if (sparse_end(fd, offset, updating_basis_or_equiv) != 0)
 				goto report_write_error;
 		} else if (flush_write_file(fd) < 0) {
 		    report_write_error:
@@ -435,7 +456,7 @@ static void handle_delayed_updates(char *local_name)
 			}
 			/* We don't use robust_rename() here because the
 			 * partial-dir must be on the same drive. */
-			if (do_rename(partialptr, fname) < 0) {
+			if (do_rename_at(partialptr, fname) < 0) {
 				rsyserr(FERROR_XFER, errno,
 					"rename failed for %s (from %s)",
 					full_fname(fname), partialptr);
@@ -451,7 +472,10 @@ static void handle_delayed_updates(char *local_name)
 static void no_batched_update(int ndx, BOOL is_redo)
 {
 	struct file_list *flist = flist_for_ndx(ndx, "no_batched_update");
-	struct file_struct *file = flist->files[ndx - flist->ndx_start];
+	struct file_struct *file;
+	if (ndx < flist->ndx_start)
+		exit_cleanup(RERR_PROTOCOL);
+	file = flist->files[ndx - flist->ndx_start];
 
 	rprintf(FERROR_XFER, "(No batched update for%s \"%s\")\n",
 		is_redo ? " resend of" : "", f_name(file, NULL));
@@ -551,6 +575,8 @@ int recv_files(int f_in, int f_out, char *local_name)
 	progress_init();
 
 	while (1) {
+		const char *basedir = NULL;
+
 		cleanup_disable();
 
 		/* This call also sets cur_flist. */
@@ -586,6 +612,8 @@ int recv_files(int f_in, int f_out, char *local_name)
 
 		if (ndx - cur_flist->ndx_start >= 0)
 			file = cur_flist->files[ndx - cur_flist->ndx_start];
+		else if (cur_flist->parent_ndx < 0)
+			exit_cleanup(RERR_PROTOCOL);
 		else
 			file = dir_flist->files[cur_flist->parent_ndx];
 		fname = local_name ? local_name : f_name(file, fbuf);
@@ -716,28 +744,34 @@ int recv_files(int f_in, int f_out, char *local_name)
 				fnamecmp = get_backup_name(fname);
 				break;
 			case FNAMECMP_FUZZY:
+				if (fuzzy_basis == 0) {
+					rprintf(FERROR_XFER, "rsync: refusing malicious fuzzy operation for %s\n", xname);
+					exit_cleanup(RERR_PROTOCOL);
+				}
 				if (file->dirname) {
-					pathjoin(fnamecmpbuf, sizeof fnamecmpbuf, file->dirname, xname);
-					fnamecmp = fnamecmpbuf;
-				} else
-					fnamecmp = xname;
+					basedir = file->dirname;
+				}
+				fnamecmp = xname;
 				break;
 			default:
 				if (fnamecmp_type > FNAMECMP_FUZZY && fnamecmp_type-FNAMECMP_FUZZY <= basis_dir_cnt) {
 					fnamecmp_type -= FNAMECMP_FUZZY + 1;
 					if (file->dirname) {
-						stringjoin(fnamecmpbuf, sizeof fnamecmpbuf,
-							   basis_dir[fnamecmp_type], "/", file->dirname, "/", xname, NULL);
-					} else
-						pathjoin(fnamecmpbuf, sizeof fnamecmpbuf, basis_dir[fnamecmp_type], xname);
+						pathjoin(fnamecmpbuf, sizeof fnamecmpbuf, basis_dir[fnamecmp_type], file->dirname);
+						basedir = fnamecmpbuf;
+					} else {
+						basedir = basis_dir[fnamecmp_type];
+					}
+					fnamecmp = xname;
 				} else if (fnamecmp_type >= basis_dir_cnt) {
 					rprintf(FERROR,
 						"invalid basis_dir index: %d.\n",
 						fnamecmp_type);
 					exit_cleanup(RERR_PROTOCOL);
-				} else
-					pathjoin(fnamecmpbuf, sizeof fnamecmpbuf, basis_dir[fnamecmp_type], fname);
-				fnamecmp = fnamecmpbuf;
+				} else {
+					basedir = basis_dir[fnamecmp_type];
+					fnamecmp = fname;
+				}
 				break;
 			}
 			if (!fnamecmp || (daemon_filter_list.head
@@ -760,25 +794,31 @@ int recv_files(int f_in, int f_out, char *local_name)
 		}
 
 		/* open the file */
-		fd1 = do_open(fnamecmp, O_RDONLY, 0);
+		fd1 = secure_relative_open(basedir, fnamecmp, O_RDONLY, 0);
 
 		if (fd1 == -1 && protocol_version < 29) {
 			if (fnamecmp != fname) {
 				fnamecmp = fname;
 				fnamecmp_type = FNAMECMP_FNAME;
-				fd1 = do_open(fnamecmp, O_RDONLY, 0);
+				fd1 = do_open_nofollow(fnamecmp, O_RDONLY);
 			}
 
 			if (fd1 == -1 && basis_dir[0]) {
 				/* pre-29 allowed only one alternate basis */
-				pathjoin(fnamecmpbuf, sizeof fnamecmpbuf,
-					 basis_dir[0], fname);
-				fnamecmp = fnamecmpbuf;
+				basedir = basis_dir[0];
+				fnamecmp = fname;
 				fnamecmp_type = FNAMECMP_BASIS_DIR_LOW;
-				fd1 = do_open(fnamecmp, O_RDONLY, 0);
+				fd1 = secure_relative_open(basedir, fnamecmp, O_RDONLY, 0);
 			}
 		}
 
+		if (basedir) {
+			// for the following code we need the full
+			// path name as a single string
+			pathjoin(fnamecmpbuf, sizeof fnamecmpbuf, basedir, fnamecmp);
+			fnamecmp = fnamecmpbuf;
+		}
+
 		one_inplace = inplace_partial && fnamecmp_type == FNAMECMP_PARTIAL_DIR;
 		updating_basis_or_equiv = one_inplace
 		    || (inplace && (fnamecmp == fname || fnamecmp_type == FNAMECMP_BACKUP));
@@ -839,11 +879,21 @@ int recv_files(int f_in, int f_out, char *local_name)
 		/* We now check to see if we are writing the file "inplace" */
 		if (inplace || one_inplace)  {
 			fnametmp = one_inplace ? partialptr : fname;
-			fd2 = do_open(fnametmp, O_WRONLY|O_CREAT, 0600);
+			/* When use_secure_symlinks is on (non-chroot daemon),
+			 * use secure open to prevent symlink race attacks where an
+			 * attacker could switch a directory to a symlink between
+			 * path validation and file open. */
+			if (use_secure_symlinks)
+				fd2 = secure_relative_open(NULL, fnametmp, O_WRONLY|O_CREAT, 0600);
+			else
+				fd2 = do_open(fnametmp, O_WRONLY|O_CREAT, 0600);
 #ifdef linux
 			if (fd2 == -1 && errno == EACCES) {
 				/* Maybe the error was due to protected_regular setting? */
-				fd2 = do_open(fname, O_WRONLY, 0600);
+				if (use_secure_symlinks)
+					fd2 = secure_relative_open(NULL, fname, O_WRONLY, 0600);
+				else
+					fd2 = do_open(fname, O_WRONLY, 0600);
 			}
 #endif
 			if (fd2 == -1) {
@@ -895,7 +945,7 @@ int recv_files(int f_in, int f_out, char *local_name)
 				recv_ok = -1;
 			else if (fnamecmp == partialptr) {
 				if (!one_inplace)
-					do_unlink(partialptr);
+					do_unlink_at(partialptr);
 				handle_partial_dir(partialptr, PDIR_DELETE);
 			}
 		} else if (keep_partial && partialptr && (!one_inplace || delay_updates)) {
@@ -904,7 +954,7 @@ int recv_files(int f_in, int f_out, char *local_name)
 					"Unable to create partial-dir for %s -- discarding %s.\n",
 					local_name ? local_name : f_name(file, NULL),
 					recv_ok ? "completed file" : "partial file");
-				do_unlink(fnametmp);
+				do_unlink_at(fnametmp);
 				recv_ok = -1;
 			} else if (!finish_transfer(partialptr, fnametmp, fnamecmp, NULL,
 						    file, recv_ok, !partial_dir))
@@ -915,7 +965,7 @@ int recv_files(int f_in, int f_out, char *local_name)
 			} else
 				partialptr = NULL;
 		} else if (!one_inplace)
-			do_unlink(fnametmp);
+			do_unlink_at(fnametmp);
 
 		cleanup_disable();
 

rsync.1.md

@@ -152,7 +152,43 @@ rsync daemon by leaving off the module name:
 
 >     rsync somehost.mydomain.com::
 
-See the following section for more details.
+## COPYING TO A DIFFERENT NAME
+
+When you want to copy a directory to a different name, use a trailing slash on
+the source directory to put the contents of the directory into any destination
+directory you like:
+
+>     rsync -ai foo/ bar/
+
+Rsync also has the ability to customize a destination file's name when copying
+a single item.  The rules for this are:
+
+- The transfer list must consist of a single item (either a file or an empty
+  directory)
+- The final element of the destination path must not exist as a directory
+- The destination path must not have been specified with a trailing slash
+
+Under those circumstances, rsync will set the name of the destination's single
+item to the last element of the destination path.  Keep in mind that it is best
+to only use this idiom when copying a file and use the above trailing-slash
+idiom when copying a directory.
+
+The following example copies the `foo.c` file as `bar.c` in the `save` dir
+(assuming that `bar.c` isn't a directory):
+
+>     rsync -ai src/foo.c save/bar.c
+
+The single-item copy rule might accidentally bite you if you unknowingly copy a
+single item and specify a destination dir that doesn't exist (without using a
+trailing slash).  For example, if `src/*.c` matches one file and `save/dir`
+doesn't exist, this will confuse you by naming the destination file `save/dir`:
+
+>     rsync -ai src/*.c save/dir
+
+To prevent such an accident, either make sure the destination dir exists or
+specify the destination path with a trailing slash:
+
+>     rsync -ai src/*.c save/dir/
 
 ## SORTED TRANSFER ORDER
 
@@ -209,7 +245,7 @@ to be copied to different destination directories using more than one copy.
 
 While a copy of a case-ignoring filesystem to a case-ignoring filesystem can
 work out fairly well, if no `--delete-during` or `--delete-before` option is
-active, rsync can potentially update an existing file on the receiveing side
+active, rsync can potentially update an existing file on the receiving side
 without noticing that the upper-/lower-case of the filename should be changed
 to match the sender.
 
@@ -400,7 +436,7 @@ has its own detailed description later in this manpage.
 --append-verify          --append w/old data in file checksum
 --dirs, -d               transfer directories without recursing
 --old-dirs, --old-d      works like --dirs when talking to old rsync
---mkpath                 create the destination's path component
+--mkpath                 create destination's missing path components
 --links, -l              copy symlinks as symlinks
 --copy-links, -L         transform symlink into referent file/dir
 --copy-unsafe-links      only "unsafe" symlinks are transformed
@@ -859,7 +895,7 @@ expand it.
     that until a bunch of recursive copying has finished).  However, these
     early directories don't yet have their completed mode, mtime, or ownership
     set -- they have more restrictive rights until the subdirectory's copying
-    actually begins.  This early-creation idiom can be avoiding by using the
+    actually begins.  This early-creation idiom can be avoided by using the
     [`--omit-dir-times`](#opt) option.
 
     Incremental recursion can be disabled using the
@@ -1113,23 +1149,28 @@ expand it.
 
 0.  `--mkpath`
 
-    Create a missing path component of the destination arg.  This allows rsync
-    to create multiple levels of missing destination dirs and to create a path
-    in which to put a single renamed file.  Keep in mind that you'll need to
-    supply a trailing slash if you want the entire destination path to be
-    treated as a directory when copying a single arg (making rsync behave the
-    same way that it would if the path component of the destination had already
-    existed).
+    Create all missing path components of the destination path.
 
-    For example, the following creates a copy of file foo as bar in the sub/dir
-    directory, creating dirs "sub" and "sub/dir" if either do not yet exist:
+    By default, rsync allows only the final component of the destination path
+    to not exist, which is an attempt to help you to validate your destination
+    path.  With this option, rsync creates all the missing destination-path
+    components, just as if `mkdir -p $DEST_PATH` had been run on the receiving
+    side.
 
-    >     rsync -ai --mkpath foo sub/dir/bar
+    When specifying a destination path, including a trailing slash ensures that
+    the whole path is treated as directory names to be created, even when the
+    file list has a single item. See the [COPYING TO A DIFFERENT NAME](#)
+    section for full details on how rsync decides if a final destination-path
+    component should be created as a directory or not.
 
-    If you instead ran the following, it would have created file foo in the
-    sub/dir/bar directory:
+    If you would like the newly-created destination dirs to match the dirs on
+    the sending side, you should be using [`--relative`](#opt) (`-R`) instead
+    of `--mkpath`.  For instance, the following two commands result in the same
+    destination tree, but only the second command ensures that the
+    "some/extra/path" components match the dirs on the sending side:
 
-    >     rsync -ai --mkpath foo sub/dir/bar/
+    >     rsync -ai --mkpath host:some/extra/path/*.c some/extra/path/
+    >     rsync -aiR host:some/extra/path/*.c ./
 
 0.  `--links`, `-l`
 
@@ -1560,6 +1601,15 @@ expand it.
     will make the update fairly efficient if the files haven't actually
     changed, you're much better off using `-t`).
 
+    A modern rsync that is using transfer protocol 30 or 31 conveys a modify
+    time using up to 8-bytes. If rsync is forced to speak an older protocol
+    (perhaps due to the remote rsync being older than 3.0.0) a modify time is
+    conveyed using 4-bytes. Prior to 3.2.7, these shorter values could convey
+    a date range of 13-Dec-1901 to 19-Jan-2038.  Beginning with 3.2.7, these
+    4-byte values now convey a date range of 1-Jan-1970 to 7-Feb-2106.  If you
+    have files dated older than 1970, make sure your rsync executables are
+    upgraded so that the full range of dates can be conveyed.
+
 0.  `--atimes`, `-U`
 
     This tells rsync to set the access (use) times of the destination files to
@@ -1586,7 +1636,9 @@ expand it.
 0.  `--crtimes`, `-N,`
 
     This tells rsync to set the create times (newness) of the destination
-    files to the same value as the source files.
+    files to the same value as the source files. Your OS & filesystem must
+    support the setting of arbitrary creation (birth) times for this option
+    to be supported.
 
 0.  `--omit-dir-times`, `-O`
 
@@ -2054,7 +2106,8 @@ expand it.
     See the [`--max-size`](#opt) option for a description of how SIZE can be
     specified.  The default suffix if none is given is bytes.
 
-    Beginning in 3.2.3, a value of 0 specifies no limit.
+    Beginning in 3.2.7, a value of 0 is an easy way to specify SIZE_MAX (the
+    largest limit possible).
 
     You can set a default value using the environment variable
     [`RSYNC_MAX_ALLOC`](#) using the same SIZE values as supported by this
@@ -2388,6 +2441,8 @@ expand it.
 
     This option tells rsync to stop trying to protect the arg values on the
     remote side from unintended word-splitting or other misinterpretation.
+    It also allows the client to treat an empty arg as a "." instead of
+    generating an error.
 
     The default in a modern rsync is for "shell-active" characters (including
     spaces) to be backslash-escaped in the args that are sent to the remote
@@ -3528,13 +3583,17 @@ expand it.
 
     >     rsync -av --list-only foo* dest/
 
-    Starting with rsync 3.1.0, the sizes output by `--list-only` are affected
-    by the [`--human-readable`](#opt) option.  By default they will contain
-    digit separators, but higher levels of readability will output the sizes
-    with unit suffixes.  Note also that the column width for the size output
-    has increased from 11 to 14 characters for all human-readable levels.  Use
-    `--no-h` if you want just digits in the sizes, and the old column width of
-    11 characters.
+    This option always uses an output format that looks similar to this:
+
+    >     drwxrwxr-x          4,096 2022/09/30 12:53:11 support
+    >     -rw-rw-r--             80 2005/01/11 10:37:37 support/Makefile
+
+    The only option that affects this output style is (as of 3.1.0) the
+    [`--human-readable`](#opt) (`-h`) option.  The default is to output sizes
+    as byte counts with digit separators (in a 14-character-width column).
+    Specifying at least one `-h` option makes the sizes output with unit
+    suffixes.  If you want old-style bytecount sizes without digit separators
+    (and an 11-character-width column) use `--no-h`.
 
     Compatibility note: when requesting a remote listing of files from an rsync
     that is version 2.6.3 or older, you may encounter an error if you ask for a
@@ -3936,7 +3995,7 @@ option (though the 2 commands behave differently if deletions are enabled):
 >     rsync -aiR x/y/file.txt host:/tmp/
 
 The following command does not need an include of the "x" directory because it
-is not a part of the transfer (note the traililng slash).  Running this command
+is not a part of the transfer (note the trailing slash).  Running this command
 would copy just "`/tmp/x/file.txt`" because the "y" and "z" dirs get excluded:
 
 >     rsync -ai -f'+ file.txt' -f'- *' x/ host:/tmp/x/
@@ -4759,7 +4818,7 @@ An rsync web site is available at <https://rsync.samba.org/>.  The site
 includes an FAQ-O-Matic which may cover questions unanswered by this manual
 page.
 
-The rsync github project is <https://github.com/WayneD/rsync>.
+The rsync github project is <https://github.com/RsyncProject/rsync>.
 
 We would be delighted to hear from you if you like this program.  Please
 contact the mailing-list at <rsync@lists.samba.org>.
@@ -4779,8 +4838,7 @@ David Bell.  I've probably missed some people, my apologies if I have.
 ## AUTHOR
 
 Rsync was originally written by Andrew Tridgell and Paul Mackerras.  Many
-people have later contributed to it. It is currently maintained by Wayne
-Davison.
+people from around the world have helped to maintain and improve it.
 
 Mailing lists for support and development are available at
 <https://lists.samba.org/>.

rsync.c

@@ -437,7 +437,10 @@ int read_ndx_and_attrs(int f_in, int f_out, int *iflag_ptr, uchar *type_ptr, cha
   */
 void free_sums(struct sum_struct *s)
 {
-	if (s->sums) free(s->sums);
+	if (s->sums) {
+		free(s->sums);
+		free(s->sum2_array);
+	}
 	free(s);
 }
 
@@ -544,7 +547,7 @@ int set_file_attrs(const char *fname, struct file_struct *file, stat_x *sxp,
 		if (am_root >= 0) {
 			uid_t uid = change_uid ? (uid_t)F_OWNER(file) : sxp->st.st_uid;
 			gid_t gid = change_gid ? (gid_t)F_GROUP(file) : sxp->st.st_gid;
-			if (do_lchown(fname, uid, gid) != 0) {
+			if (do_lchown_at(fname, uid, gid) != 0) {
 				/* We shouldn't have attempted to change uid
 				 * or gid unless have the privilege. */
 				rsyserr(FERROR_XFER, errno, "%s %s failed",
@@ -654,7 +657,7 @@ int set_file_attrs(const char *fname, struct file_struct *file, stat_x *sxp,
 
 #ifdef HAVE_CHMOD
 	if (!BITS_EQUAL(sxp->st.st_mode, new_mode, CHMOD_BITS)) {
-		int ret = am_root < 0 ? 0 : do_chmod(fname, new_mode);
+		int ret = am_root < 0 ? 0 : do_chmod_at(fname, new_mode);
 		if (ret < 0) {
 			rsyserr(FERROR_XFER, errno,
 				"failed to set permissions on %s",
@@ -755,7 +758,7 @@ int finish_transfer(const char *fname, const char *fnametmp,
 			full_fname(fnametmp), fname);
 		if (!partialptr || (ret == -2 && temp_copy_name)
 		 || robust_rename(fnametmp, partialptr, NULL, file->mode) < 0)
-			do_unlink(fnametmp);
+			do_unlink_at(fnametmp);
 		return 0;
 	}
 	if (ret == 0) {
@@ -771,7 +774,7 @@ int finish_transfer(const char *fname, const char *fnametmp,
 		       ok_to_set_time ? ATTRS_ACCURATE_TIME : ATTRS_SKIP_MTIME | ATTRS_SKIP_ATIME | ATTRS_SKIP_CRTIME);
 
 	if (temp_copy_name) {
-		if (do_rename(fnametmp, fname) < 0) {
+		if (do_rename_at(fnametmp, fname) < 0) {
 			rsyserr(FERROR_XFER, errno, "rename %s -> \"%s\"",
 				full_fname(fnametmp), fname);
 			return 0;

rsync.h

@@ -92,6 +92,7 @@
 #define FLAG_SKIP_GROUP (1<<10)	/* receiver/generator */
 #define FLAG_TIME_FAILED (1<<11)/* generator */
 #define FLAG_MOD_NSEC (1<<12)	/* sender/receiver/generator */
+#define FLAG_GOT_DIR_FLIST (1<<13)/* sender/receiver/generator - dir_flist only */
 
 /* These flags are passed to functions but not stored. */
 
@@ -110,7 +111,7 @@
 
 /* Update this if you make incompatible changes and ALSO update the
  * SUBPROTOCOL_VERSION if it is not a final (official) release. */
-#define PROTOCOL_VERSION 31
+#define PROTOCOL_VERSION 32
 
 /* This is used when working on a new protocol version or for any unofficial
  * protocol tweaks.  It should be a non-zero value for each pre-release repo
@@ -162,6 +163,29 @@
 /* For compatibility with older rsyncs */
 #define OLD_MAX_BLOCK_SIZE ((int32)1 << 29)
 
+/* Policy ceilings on attacker-controlled wire values. Picked well above any
+ * legitimate filesystem / protocol traffic but well below sizes that could
+ * cause integer overflow or DoS-grade allocations. See input_checking.txt.
+ *
+ * Note on MAX_WIRE_XATTR_DATALEN: xattr datum size is bounded only by the
+ * wire-format maximum (signed int32 varint, ~2GB). macOS resource forks
+ * are transferred as the com.apple.ResourceFork xattr and can legitimately
+ * be many GB; --max-alloc (default 1GB, configurable) is the real
+ * allocation cap. read_varint_size() still rejects negative values so a
+ * hostile peer cannot wrap to ~SIZE_MAX. */
+#define MAX_WIRE_XATTR_COUNT   65536
+#define MAX_WIRE_XATTR_NAMELEN 4096
+#define MAX_WIRE_XATTR_DATALEN ((int32)0x7fffffff)
+#define MAX_WIRE_ACL_COUNT     65536
+#define MAX_WIRE_NSEC          999999999
+/* MAX_WIRE_DEL_STAT is the per-category cap for read_del_stats() in main.c,
+ * which accumulates 5 wire-supplied counts into the int32 stats.deleted_files
+ * accumulator.  Capped at 2^28 so 5 * 2^28 = 1.34 GB stays under INT32_MAX
+ * (2.15 GB) with margin -- a higher cap (e.g. 2^30) would let a hostile peer
+ * supplying 3+ max-sized counts overflow the accumulator, which is signed-int
+ * UB.  2^28 is still well above any plausible real transfer's deletion count. */
+#define MAX_WIRE_DEL_STAT      ((int32)1 << 28)
+
 #define ROUND_UP_1024(siz) ((siz) & (1024-1) ? ((siz) | (1024-1)) + 1 : (siz))
 
 #define IOERR_GENERAL	(1<<0) /* For backward compatibility, this must == 1 */
@@ -366,16 +390,10 @@ enum delret {
 #include <sys/socket.h>
 #endif
 
-#ifdef TIME_WITH_SYS_TIME
-#include <sys/time.h>
-#include <time.h>
-#else
 #ifdef HAVE_SYS_TIME_H
 #include <sys/time.h>
-#else
+#endif
 #include <time.h>
-#endif
-#endif
 
 #ifdef HAVE_FCNTL_H
 #include <fcntl.h>
@@ -964,12 +982,12 @@ struct sum_buf {
 	uint32 sum1;	        /**< simple checksum */
 	int32 chain;		/**< next hash-table collision */
 	short flags;		/**< flag bits */
-	char sum2[SUM_LENGTH];	/**< checksum  */
 };
 
 struct sum_struct {
 	OFF_T flength;		/**< total file length */
 	struct sum_buf *sums;	/**< points to info for each chunk */
+	char *sum2_array;	/**< checksums of length xfer_sum_len */
 	int32 count;		/**< how many chunks */
 	int32 blength;		/**< block_length */
 	int32 remainder;	/**< flength % block_length */
@@ -988,6 +1006,8 @@ struct map_struct {
 	int status;		/* first errno from read errors		*/
 };
 
+#define sum2_at(s, i)	((s)->sum2_array + ((size_t)(i) * xfer_sum_len))
+
 #define NAME_IS_FILE		(0)    /* filter name as a file */
 #define NAME_IS_DIR		(1<<0) /* filter name as a dir */
 #define NAME_IS_XATTR		(1<<2) /* filter name as an xattr */

rsyncd.conf.5.md

@@ -74,25 +74,7 @@ reread the `rsyncd.conf` file. The file is re-read on each client connection.
 ## GLOBAL PARAMETERS
 
 The first parameters in the file (before a [module] header) are the global
-parameters.  Rsync also allows for the use of a "[global]" module name to
-indicate the start of one or more global-parameter sections (the name must be
-lower case).
-
-You may also include any module parameters in the global part of the config
-file in which case the supplied value will override the default for that
-parameter.
-
-You may use references to environment variables in the values of parameters.
-String parameters will have %VAR% references expanded as late as possible (when
-the string is first used in the program), allowing for the use of variables
-that rsync sets at connection time, such as RSYNC_USER_NAME.  Non-string
-parameters (such as true/false settings) are expanded when read from the config
-file.  If a variable does not exist in the environment, or if a sequence of
-characters is not a valid reference (such as an un-paired percent sign), the
-raw characters are passed through unchanged.  This helps with backward
-compatibility and safety (e.g. expanding a non-existent %VAR% to an empty
-string in a path could result in a very unsafe path).  The safest way to insert
-a literal % into a value is to use %%.
+parameters:
 
 [comment]: # (An OL starting at 0 is converted into a DL by the parser.)
 
@@ -138,6 +120,22 @@ a literal % into a value is to use %%.
     You can override the default backlog value when the daemon listens for
     connections.  It defaults to 5.
 
+You may also include any [MODULE PARAMETERS](#) in the global part of the
+config file, in which case the supplied value will override the default for
+that parameter.
+
+You may use references to environment variables in the values of parameters.
+String parameters will have %VAR% references expanded as late as possible (when
+the string is first used in the program), allowing for the use of variables
+that rsync sets at connection time, such as RSYNC_USER_NAME.  Non-string
+parameters (such as true/false settings) are expanded when read from the config
+file.  If a variable does not exist in the environment, or if a sequence of
+characters is not a valid reference (such as an un-paired percent sign), the
+raw characters are passed through unchanged.  This helps with backward
+compatibility and safety (e.g. expanding a non-existent %VAR% to an empty
+string in a path could result in a very unsafe path).  The safest way to insert
+a literal % into a value is to use %%.
+
 ## MODULE PARAMETERS
 
 After the global parameters you should define a number of modules, each module
@@ -146,11 +144,17 @@ a module name in square brackets [module] followed by the parameters for that
 module.  The module name cannot contain a slash or a closing square bracket.
 If the name contains whitespace, each internal sequence of whitespace will be
 changed into a single space, while leading or trailing whitespace will be
-discarded.  Also, the name cannot be "global" as that exact name indicates that
-global parameters follow (see above).
+discarded.
 
-As with GLOBAL PARAMETERS, you may use references to environment variables in
-the values of parameters.  See the GLOBAL PARAMETERS section for more details.
+There is also a special module name of "[global]" that does not define a module
+but instead switches back to the global settings context where default
+parameters can be specified.  Because each defined module gets its full set of
+parameters as a combination of the default values that are set at that position
+in the config file plus its own parameter list, the use of a "[global]" section
+can help to maintain shared config values for multiple modules.
+
+As with [GLOBAL PARAMETERS](#), you may use references to environment variables
+in the values of parameters.  See that section for details.
 
 0.  `comment`
 
@@ -1019,7 +1023,7 @@ the values of parameters.  See the GLOBAL PARAMETERS section for more details.
     _not_ displayed if the script returns success.  The other programs cannot
     send any text to the user.  All output except for the `pre-xfer exec`
     stdout goes to the corresponding daemon's stdout/stderr, which is typically
-    discarded.  See the `--no-detatch` option for a way to see the daemon's
+    discarded.  See the `--no-detach` option for a way to see the daemon's
     output, which can assist with debugging.
 
     Note that the `early exec` command runs before any part of the transfer
@@ -1184,6 +1188,9 @@ An example nginx proxy setup is as follows:
 > }
 > ```
 
+If rsyncd should be accessible encrypted and unencrypted at the same time make
+the proxy listen on port 873 as well and let it handle both streams.
+
 ## DAEMON CONFIG EXAMPLES
 
 A simple rsyncd.conf file that allow anonymous rsync to a ftp area at
@@ -1256,7 +1263,7 @@ Rsync is distributed under the GNU General Public License.  See the file
 [COPYING](COPYING) for details.
 
 An rsync web site is available at <https://rsync.samba.org/> and its github
-project is <https://github.com/WayneD/rsync>.
+project is <https://github.com/RsyncProject/rsync>.
 
 ## THANKS
 
@@ -1266,8 +1273,7 @@ Thanks to Karsten Thygesen for his many suggestions and documentation!
 ## AUTHOR
 
 Rsync was originally written by Andrew Tridgell and Paul Mackerras.  Many
-people have later contributed to it. It is currently maintained by Wayne
-Davison.
+people from around the world have helped to maintain and improve it.
 
 Mailing lists for support and development are available at
 <https://lists.samba.org/>.

sender.c

@@ -31,6 +31,7 @@ extern int log_before_transfer;
 extern int stdout_format_has_i;
 extern int logfile_format_has_i;
 extern int want_xattr_optim;
+extern int xfer_sum_len;
 extern int csum_length;
 extern int append_mode;
 extern int copy_links;
@@ -47,6 +48,8 @@ extern int make_backups;
 extern int inplace;
 extern int inplace_partial;
 extern int batch_fd;
+extern int use_secure_symlinks;
+extern char *module_dir;
 extern int write_batch;
 extern int file_old_total;
 extern BOOL want_progress_now;
@@ -94,10 +97,11 @@ static struct sum_struct *receive_sums(int f)
 		return(s);
 
 	s->sums = new_array(struct sum_buf, s->count);
+	s->sum2_array = new_array(char, (size_t)s->count * xfer_sum_len);
 
 	for (i = 0; i < s->count; i++) {
 		s->sums[i].sum1 = read_int(f);
-		read_buf(f, s->sums[i].sum2, s->s2length);
+		read_buf(f, sum2_at(s, i), s->s2length);
 
 		s->sums[i].offset = offset;
 		s->sums[i].flags = 0;
@@ -136,6 +140,8 @@ void successful_send(int ndx)
 		return;
 
 	flist = flist_for_ndx(ndx, "successful_send");
+	if (ndx < flist->ndx_start)
+		exit_cleanup(RERR_PROTOCOL);
 	file = flist->files[ndx - flist->ndx_start];
 	if (!change_pathname(file, NULL, 0))
 		return;
@@ -260,6 +266,8 @@ void send_files(int f_in, int f_out)
 
 		if (ndx - cur_flist->ndx_start >= 0)
 			file = cur_flist->files[ndx - cur_flist->ndx_start];
+		else if (cur_flist->parent_ndx < 0)
+			exit_cleanup(RERR_PROTOCOL);
 		else
 			file = dir_flist->files[cur_flist->parent_ndx];
 		if (F_PATHNAME(file)) {
@@ -348,7 +356,25 @@ void send_files(int f_in, int f_out)
 			exit_cleanup(RERR_PROTOCOL);
 		}
 
-		fd = do_open(fname, O_RDONLY, 0);
+		if (use_secure_symlinks) {
+			/* Open from module root to prevent TOCTOU race where
+			 * change_pathname's chdir follows a directory symlink.
+			 * Reconstruct the full path relative to module_dir
+			 * from F_PATHNAME (path) and f_name (fname). */
+			char secure_path[MAXPATHLEN];
+			int slen = snprintf(secure_path, sizeof secure_path, "%s%s%s", path, slash, fname);
+			if (slen >= (int)sizeof secure_path) {
+				io_error |= IOERR_GENERAL;
+				rprintf(FERROR_XFER, "path too long: %s%s%s\n", path, slash, fname);
+				free_sums(s);
+				if (protocol_version >= 30)
+					send_msg_int(MSG_NO_SEND, ndx);
+				continue;
+			}
+			fd = secure_relative_open(module_dir, secure_path, O_RDONLY, 0);
+		} else {
+			fd = do_open_checklinks(fname);
+		}
 		if (fd == -1) {
 			if (errno == ENOENT) {
 				enum logcode c = am_daemon && protocol_version < 28 ? FERROR : FWARNING;

simd-checksum-x86_64.cpp

@@ -68,8 +68,8 @@
 #endif
 
 // Missing from the headers on gcc 6 and older, clang 8 and older
-typedef long long __m128i_u __attribute__((__vector_size__(16), __may_alias__, __aligned__(1)));
-typedef long long __m256i_u __attribute__((__vector_size__(32), __may_alias__, __aligned__(1)));
+typedef long long __m128i_u __attribute__((__vector_size__(16), __may_alias__, __aligned__(16)));
+typedef long long __m256i_u __attribute__((__vector_size__(32), __may_alias__, __aligned__(16)));
 
 /* Compatibility macros to let our SSSE3 algorithm run with only SSE2.
    These used to be neat individual functions with target attributes switching between SSE2 and SSSE3 implementations
@@ -347,8 +347,7 @@ __attribute__ ((target("avx2"))) MVSTATIC int32 get_checksum1_avx2_64(schar* buf
 	__m128i tmp = _mm_load_si128((__m128i*) mul_t1_buf);
         __m256i mul_t1 = _mm256_cvtepu8_epi16(tmp);
 	__m256i mul_const = _mm256_broadcastd_epi32(_mm_cvtsi32_si128(4 | (3 << 8) | (2 << 16) | (1 << 24)));
-        __m256i mul_one;
-       	    mul_one = _mm256_abs_epi8(_mm256_cmpeq_epi16(mul_one,mul_one)); // set all vector elements to 1
+        __m256i mul_one = _mm256_set1_epi8(1);
 
         for (; i < (len-64); i+=64) {
             // Load ... 4*[int8*16]
@@ -548,6 +547,118 @@ int main() {
 #pragma clang optimize on
 #endif /* BENCHMARK_SIMD_CHECKSUM1 */
 
+#ifdef TEST_SIMD_CHECKSUM1
+
+static uint32 checksum_via_default(char *buf, int32 len)
+{
+    uint32 s1 = 0, s2 = 0;
+    get_checksum1_default_1((schar*)buf, len, 0, &s1, &s2);
+    return (s1 & 0xffff) + (s2 << 16);
+}
+
+static uint32 checksum_via_sse2(char *buf, int32 len)
+{
+    int32 i;
+    uint32 s1 = 0, s2 = 0;
+    i = get_checksum1_sse2_32((schar*)buf, len, 0, &s1, &s2);
+    get_checksum1_default_1((schar*)buf, len, i, &s1, &s2);
+    return (s1 & 0xffff) + (s2 << 16);
+}
+
+static uint32 checksum_via_ssse3(char *buf, int32 len)
+{
+    int32 i;
+    uint32 s1 = 0, s2 = 0;
+    i = get_checksum1_ssse3_32((schar*)buf, len, 0, &s1, &s2);
+    get_checksum1_default_1((schar*)buf, len, i, &s1, &s2);
+    return (s1 & 0xffff) + (s2 << 16);
+}
+
+static uint32 checksum_via_avx2(char *buf, int32 len)
+{
+    int32 i;
+    uint32 s1 = 0, s2 = 0;
+#ifdef USE_ROLL_ASM
+    i = get_checksum1_avx2_asm((schar*)buf, len, 0, &s1, &s2);
+#else
+    i = get_checksum1_avx2_64((schar*)buf, len, 0, &s1, &s2);
+#endif
+    get_checksum1_default_1((schar*)buf, len, i, &s1, &s2);
+    return (s1 & 0xffff) + (s2 << 16);
+}
+
+int main()
+{
+    static const int sizes[] = {1, 4, 31, 32, 33, 63, 64, 65, 128, 129, 256, 700, 1024, 4096, 65536};
+    int num_sizes = sizeof(sizes) / sizeof(sizes[0]);
+    int max_size = sizes[num_sizes - 1];
+    int failures = 0;
+
+    /* Allocate with extra bytes for unaligned test */
+    unsigned char *raw = (unsigned char *)malloc(max_size + 64 + 1);
+    if (!raw) {
+        fprintf(stderr, "malloc failed\n");
+        return 1;
+    }
+
+    /* Fill with deterministic data */
+    for (int i = 0; i < max_size + 64 + 1; i++)
+        raw[i] = (i + (i % 3) + (i % 11)) % 256;
+
+    /* Test with aligned buffer (64-byte aligned) */
+    unsigned char *aligned = raw + (64 - ((uintptr_t)raw % 64));
+
+    /* Test with unaligned buffer (+1 byte offset) */
+    unsigned char *unaligned = aligned + 1;
+
+    struct { const char *name; unsigned char *buf; } buffers[] = {
+        {"aligned", aligned},
+        {"unaligned", unaligned},
+    };
+
+    for (int b = 0; b < 2; b++) {
+        char *buf = (char *)buffers[b].buf;
+        const char *bname = buffers[b].name;
+
+        for (int s = 0; s < num_sizes; s++) {
+            int32 len = sizes[s];
+            uint32 ref = checksum_via_default(buf, len);
+            uint32 cs_sse2 = checksum_via_sse2(buf, len);
+            uint32 cs_ssse3 = checksum_via_ssse3(buf, len);
+            uint32 cs_avx2 = checksum_via_avx2(buf, len);
+            uint32 cs_auto = get_checksum1(buf, len);
+
+            if (cs_sse2 != ref) {
+                printf("FAIL %-9s size=%5d: SSE2=%08x ref=%08x\n", bname, len, cs_sse2, ref);
+                failures++;
+            }
+            if (cs_ssse3 != ref) {
+                printf("FAIL %-9s size=%5d: SSSE3=%08x ref=%08x\n", bname, len, cs_ssse3, ref);
+                failures++;
+            }
+            if (cs_avx2 != ref) {
+                printf("FAIL %-9s size=%5d: AVX2=%08x ref=%08x\n", bname, len, cs_avx2, ref);
+                failures++;
+            }
+            if (cs_auto != ref) {
+                printf("FAIL %-9s size=%5d: auto=%08x ref=%08x\n", bname, len, cs_auto, ref);
+                failures++;
+            }
+        }
+    }
+
+    free(raw);
+
+    if (failures) {
+        printf("%d checksum mismatches!\n", failures);
+        return 1;
+    }
+    printf("All SIMD checksum tests passed.\n");
+    return 0;
+}
+
+#endif /* TEST_SIMD_CHECKSUM1 */
+
 #endif /* } USE_ROLL_SIMD */
 #endif /* } __cplusplus */
 #endif /* } __x86_64__ */

socket.c

@@ -47,21 +47,23 @@ static struct sigaction sigact;
 
 static int sock_exec(const char *prog);
 
+#define PROXY_BUF_SIZE 1024
+
 /* Establish a proxy connection on an open socket to a web proxy by using the
  * CONNECT method.  If proxy_user and proxy_pass are not NULL, they are used to
  * authenticate to the proxy using the "Basic" proxy-authorization protocol. */
 static int establish_proxy_connection(int fd, char *host, int port, char *proxy_user, char *proxy_pass)
 {
-	char *cp, buffer[1024];
-	char *authhdr, authbuf[1024];
+	char *cp, buffer[PROXY_BUF_SIZE + 1];
+	char *authhdr, authbuf[PROXY_BUF_SIZE + 1];
 	int len;
 
 	if (proxy_user && proxy_pass) {
-		stringjoin(buffer, sizeof buffer,
+		stringjoin(buffer, PROXY_BUF_SIZE,
 			 proxy_user, ":", proxy_pass, NULL);
 		len = strlen(buffer);
 
-		if ((len*8 + 5) / 6 >= (int)sizeof authbuf - 3) {
+		if ((len*8 + 5) / 6 >= PROXY_BUF_SIZE - 3) {
 			rprintf(FERROR,
 				"authentication information is too long\n");
 			return -1;
@@ -74,14 +76,14 @@ static int establish_proxy_connection(int fd, char *host, int port, char *proxy_
 		authhdr = "";
 	}
 
-	len = snprintf(buffer, sizeof buffer, "CONNECT %s:%d HTTP/1.0%s%s\r\n\r\n", host, port, authhdr, authbuf);
-	assert(len > 0 && len < (int)sizeof buffer);
+	len = snprintf(buffer, PROXY_BUF_SIZE, "CONNECT %s:%d HTTP/1.0%s%s\r\n\r\n", host, port, authhdr, authbuf);
+	assert(len > 0 && len < PROXY_BUF_SIZE);
 	if (write(fd, buffer, len) != len) {
 		rsyserr(FERROR, errno, "failed to write to proxy");
 		return -1;
 	}
 
-	for (cp = buffer; cp < &buffer[sizeof buffer - 1]; cp++) {
+	for (cp = buffer; cp < &buffer[PROXY_BUF_SIZE - 1]; cp++) {
 		if (read(fd, cp, 1) != 1) {
 			rsyserr(FERROR, errno, "failed to read from proxy");
 			return -1;
@@ -90,11 +92,13 @@ static int establish_proxy_connection(int fd, char *host, int port, char *proxy_
 			break;
 	}
 
-	if (*cp != '\n')
-		cp++;
-	*cp-- = '\0';
-	if (*cp == '\r')
-		*cp = '\0';
+	if (cp == &buffer[PROXY_BUF_SIZE - 1]) {
+		rprintf(FERROR, "proxy response line too long\n");
+		return -1;
+	}
+	*cp = '\0';
+	if (cp > buffer && cp[-1] == '\r')
+		cp[-1] = '\0';
 	if (strncmp(buffer, "HTTP/", 5) != 0) {
 		rprintf(FERROR, "bad response from proxy -- %s\n",
 			buffer);
@@ -110,7 +114,7 @@ static int establish_proxy_connection(int fd, char *host, int port, char *proxy_
 	}
 	/* throw away the rest of the HTTP header */
 	while (1) {
-		for (cp = buffer; cp < &buffer[sizeof buffer - 1]; cp++) {
+		for (cp = buffer; cp < &buffer[PROXY_BUF_SIZE]; cp++) {
 			if (read(fd, cp, 1) != 1) {
 				rsyserr(FERROR, errno,
 					"failed to read from proxy");

support/cvs2includes

@@ -1,42 +1,63 @@
-#!/usr/bin/env perl
-#
+#!/usr/bin/env python3
 # This script finds all CVS/Entries files in the current directory and below
 # and creates a local .cvsinclude file with non-inherited rules including each
 # checked-in file.  Then, use this option whenever using --cvs-exclude (-C):
 #
-# 	-f ': .cvsinclude'
+#    -f ': .cvsinclude'
 #
 # That ensures that all checked-in files/dirs are included in the transfer.
 # (You could alternately put ": .cvsinclude" into an .rsync-filter file and
 # use the -F option, which is easier to type.)
 #
 # The downside is that you need to remember to re-run cvs2includes whenever
-# you add a new file to the project.
-use strict;
+# CVS gets an added or removed file. Maybe just run it before every copy.
 
-open(FIND, 'find . -name CVS -type d |') or die $!;
-while (<FIND>) {
-    chomp;
-    s#^\./##;
+import os, argparse
 
-    my $entries = "$_/Entries";
-    s/CVS$/.cvsinclude/;
-    my $filter = $_;
+INC_NAME = '.cvsinclude'
 
-    open(ENTRIES, $entries) or die "Unable to open $entries: $!\n";
-    my @includes;
-    while (<ENTRIES>) {
-	push(@includes, $1) if m#/(.+?)/#;
-    }
-    close ENTRIES;
-    if (@includes) {
-	open(FILTER, ">$filter") or die "Unable to write $filter: $!\n";
-	print FILTER map "+ /$_\n", @includes;
-	close FILTER;
-	print "Updated $filter\n";
-    } elsif (-f $filter) {
-	unlink($filter);
-	print "Removed $filter\n";
-    }
-}
-close FIND;
+def main():
+    if args.dir:
+        os.chdir(args.dir)
+
+    cvs_includes = set()
+    for root, dirs, files in os.walk('.'):
+        if INC_NAME in files:
+            cvs_includes.add((root + '/' + INC_NAME)[2:])
+        if root.endswith('/CVS') and 'Entries' in files:
+            entries = root[2:] + '/Entries'
+            includes = [ ]
+            with open(entries) as fh:
+                for line in fh:
+                    if line.startswith(('/', 'D/')):
+                        includes.append(line.split('/', 2)[1])
+            if includes:
+                inc = root[2:-3] + INC_NAME
+                cvs_includes.discard(inc)
+                try:
+                    with open(inc) as fh:
+                        old_txt = fh.read()
+                except OSError:
+                    old_txt = ''
+                txt = ''.join(f"+ /{x}\n" for x in includes)
+                if txt == old_txt:
+                    print("Unchanged", inc)
+                else:
+                    print("Updating", inc)
+                    with open(inc, 'w') as fh:
+                        fh.write(txt)
+        dirs.sort()
+
+    for inc in sorted(cvs_includes):
+        print("Removing", inc)
+        os.unlink(inc)
+
+
+if __name__ == '__main__':
+    parser = argparse.ArgumentParser(description=f"Transform CVS/Entries into {INC_NAME} files.", add_help=False)
+    parser.add_argument("--help", "-h", action="help", help="Output this help message and exit.")
+    parser.add_argument("dir", nargs='?', help="The top CVS dir. Defaults to the current directory.")
+    args = parser.parse_args()
+    main()
+
+# vim: sw=4 et

support/files-to-excludes

@@ -1,27 +1,37 @@
-#!/usr/bin/env perl
-# This script takes an input of filenames and outputs a set of
-# include/exclude directives that can be used by rsync to copy
-# just the indicated files using an --exclude-from=FILE option.
-use strict;
+#!/usr/bin/env python3
+# This script takes an input of filenames and outputs a set of include/exclude
+# directives that can be used by rsync to copy just the indicated files using
+# an --exclude-from=FILE or -f'. FILE' option. To be able to delete files on
+# the receiving side, either use --delete-excluded or change the exclude (-)
+# rules to hide filter rules (H) that only affect the sending side.
 
-my %hash;
+import os, fileinput, argparse
 
-while (<>) {
-    chomp;
-    s#^/+##;
-    my $path = '/';
-    while (m#([^/]+/)/*#g) {
-	$path .= $1;
-	print "+ $path\n" unless $hash{$path}++;
-    }
-    if (m#([^/]+)$#) {
-	print "+ $path$1\n";
-    } else {
-	delete $hash{$path};
-    }
-}
+def main():
+    paths = set()
+    for line in fileinput.input(args.files):
+        dirs = line.strip().lstrip('/').split('/')
+        if not dirs:
+            continue
+        for j in range(1, len(dirs)):
+            if dirs[j] == '':
+                continue
+            path = '/' + '/'.join(dirs[:j]) + '/'
+            if path not in paths:
+                print('+', path)
+                paths.add(path)
+        print('+', '/' + '/'.join(dirs))
 
-foreach (sort keys %hash) {
-    print "- $_*\n";
-}
-print "- /*\n";
+    for path in sorted(paths):
+        print('-', path + '*')
+    print('-', '/*')
+
+
+if __name__ == '__main__':
+    parser = argparse.ArgumentParser(description="Transform a list of files into a set of include/exclude rules.", add_help=False)
+    parser.add_argument("--help", "-h", action="help", help="Output this help message and exit.")
+    parser.add_argument("files", metavar="FILE", default='-', nargs='*', help="The file(s) that hold the pathnames to translate. Defaults to stdin.")
+    args = parser.parse_args()
+    main()
+
+# vim: sw=4 et

support/idmap

@@ -0,0 +1,45 @@
+#!/usr/bin/env python3
+# This helper script makes it easy to use a passwd or group file to map values
+# in a LOCAL transfer.  For instance, if you mount a backup that does not have
+# the same passwd setup as the local machine, you can do a copy to/from the
+# backup area as follows and get the differing ID values mapped just like a
+# remote transfer to/from the backed-up machine would do:
+#
+# rsync -av --usermap=`idmap --to /mnt/backup/etc/passwd` \
+#           --groupmap=`idmap --to /mnt/backup/etc/group` \
+#           /some/src/ /mnt/backup/some/dest/
+#
+# rsync -av --usermap=`idmap --from /mnt/backup/etc/passwd` \
+#           --groupmap=`idmap --from /mnt/backup/etc/group` \
+#           /mnt/backup/some/src/ /some/dest/
+
+import re, fileinput, argparse
+
+NAME_ID_RE = re.compile(r'^(\w+):[^:]+:(\d+)')
+
+def main():
+    maps = [ ]
+    for line in fileinput.input(args.files):
+        m = NAME_ID_RE.match(line)
+        if not m:
+            continue
+        if args.to:
+            pair = (m[1], m[2])
+        else:
+            pair = (m[2], m[1])
+        maps.append(':'.join(pair))
+    print(','.join(maps))
+
+
+if __name__ == '__main__':
+    parser = argparse.ArgumentParser(description="Output usermap or groupmap args for rsync.", add_help=False)
+    action = parser.add_argument_group()
+    action = parser.add_mutually_exclusive_group(required=True)
+    action.add_argument("--from", action="store_true", help="Output the map for use on the sending side.")
+    action.add_argument("--to", action="store_true", help="Output the map for use on the receiving side.")
+    parser.add_argument("--help", "-h", action="help", help="Output this help message and exit.")
+    parser.add_argument("files", metavar="FILE", default='-', nargs='*', help="The file(s) that hold the name & id pairs. Defaults to stdin.")
+    args = parser.parse_args()
+    main()
+
+# vim: sw=4 et

support/install_deps_ubuntu.sh

@@ -0,0 +1,11 @@
+#!/bin/bash
+
+# install script for build dependencies for ubuntu/debian systems
+
+sudo apt install -y gcc g++ gawk autoconf automake python3-cmarkgfm
+sudo apt install -y acl libacl1-dev
+sudo apt install -y attr libattr1-dev
+sudo apt install -y libxxhash-dev
+sudo apt install -y libzstd-dev
+sudo apt install -y liblz4-dev
+sudo apt install -y libssl-dev

support/json-rsync-version

@@ -1,7 +1,18 @@
-#!/usr/bin/python3
+#!/usr/bin/env python3
 
 import sys, argparse, subprocess, json
 
+TWEAK_NAME = {
+        'asm': 'asm_roll',
+        'ASM': 'asm_roll',
+        'hardlink_special': 'hardlink_specials',
+        'protect_args': 'secluded_args',
+        'protected_args': 'secluded_args',
+        'SIMD': 'SIMD_roll',
+    }
+
+MOVE_OPTIM = set('asm_roll SIMD_roll'.split())
+
 def main():
     if not args.rsync or args.rsync == '-':
         ver_out = sys.stdin.read().strip()
@@ -11,6 +22,7 @@ def main():
         print(ver_out)
         return
     info = { }
+    misplaced_optims = { }
     for line in ver_out.splitlines():
         if line.startswith('rsync '):
             prog, vstr, ver, pstr, vstr2, proto = line.split()
@@ -40,13 +52,16 @@ def main():
                         elif val.endswith('-bit'):
                             var = var[:-1] + '_bits'
                             val = int(val.split('-')[0])
-                        if var == 'protect-args':
-                            var = 'secluded-args'
                     else:
                         var = x
                         val = True
                     var = var.replace(' ', '_').replace('-', '_')
-                    info[sect_name][var] = val
+                    if var in TWEAK_NAME:
+                        var = TWEAK_NAME[var]
+                    if sect_name[0] != 'o' and var in MOVE_OPTIM:
+                        misplaced_optims[var] = val
+                    else:
+                        info[sect_name][var] = val
             else:
                 info[sect_name] += [ x for x in line.split() if not x.startswith('(') ]
         elif line == '':
@@ -58,10 +73,12 @@ def main():
     for chk in 'capabilities optimizations'.split():
         if chk not in info:
             info[chk] = { }
+    if misplaced_optims:
+        info['optimizations'].update(misplaced_optims)
     for chk in 'checksum_list compress_list daemon_auth_list'.split():
         if chk not in info:
             info[chk] = [ ]
-    info['license'] = 'GPL3'
+    info['license'] = 'GPLv3' if ver[0] == '3' else 'GPLv2'
     info['caveat'] = 'rsync comes with ABSOLUTELY NO WARRANTY'
     print(json.dumps(info))
 

support/mapfrom

@@ -1,15 +0,0 @@
-#!/usr/bin/env perl
-# This helper script makes it easy to use a passwd or group file to map
-# values in a LOCAL transfer.  For instance, if you mount a backup that
-# does not have the same passwd setup as the local machine, you can do
-# a copy FROM the backup area as follows and get the differing ID values
-# mapped just like a remote transfer FROM the backed-up machine would do:
-#
-# rsync -av --usermap=`mapfrom /mnt/backup/etc/passwd` \
-#           --groupmap=`mapfrom /mnt/backup/etc/group` \
-#           /mnt/backup/some/src/ /some/dest/
-
-while (<>) {
-    push @_, "$2:$1" if /^(\w+):[^:]+:(\d+)/;
-}
-print join(',', @_), "\n";

support/mapto

@@ -1,15 +0,0 @@
-#!/usr/bin/env perl
-# This helper script makes it easy to use a passwd or group file to map
-# values in a LOCAL transfer.  For instance, if you mount a backup that
-# does not have the same passwd setup as the local machine, you can do
-# a copy TO the backup area as follows and get the differing ID values
-# mapped just like a remote transfer TO the backed-up machine would do:
-#
-# rsync -av --usermap=`mapto /mnt/backup/etc/passwd` \
-#           --groupmap=`mapto /mnt/backup/etc/group` \
-#           /some/src/ /mnt/backup/some/dest/
-
-while (<>) {
-    push @_, "$1:$2" if /^(\w+):[^:]+:(\d+)/;
-}
-print join(',', @_), "\n";

support/mnt-excl

@@ -1,4 +1,4 @@
-#!/usr/bin/env perl
+#!/usr/bin/env python3
 # This script takes a command-line arg of a source directory
 # that will be passed to rsync, and generates a set of excludes
 # that will exclude all mount points from the list.  This is
@@ -27,23 +27,33 @@
 # awk '{print $2}' /proc/mounts | grep -v '^/$' | \
 #   rsync -avf 'merge,/- -' /dir host:/dest/
 
-use strict;
-use warnings;
-use Cwd 'abs_path';
+import os, argparse
 
-my $file = '/proc/mounts';
-my $dir = shift || '/';
-my $trailing_slash = $dir =~ m{./$} ? '/' : '';
-$dir = abs_path($dir) . $trailing_slash;
-$dir =~ s{([^/]*)$}{};
-my $trailing = $1;
-$trailing = '' if $trailing eq '.' || !-d "$dir$trailing";
-$trailing .= '/' if $trailing ne '';
+MNT_FILE = '/proc/mounts';
 
-open(IN, $file) or die "Unable to open $file: $!\n";
-while (<IN>) {
-    $_ = (split)[1];
-    next unless s{^\Q$dir$trailing\E}{}o && $_ ne '';
-    print "- /$trailing$_\n";
-}
-close IN;
+def main():
+    trailing_slash = '/' if args.path.endswith(('/', '/.')) and args.path != '/' else ''
+    args.path = os.path.realpath(args.path) + trailing_slash
+    parent_dir = os.path.dirname(args.path)
+    trailing = os.path.basename(args.path)
+    if not os.path.isdir(args.path):
+        trailing = ''
+    elif trailing != '':
+        trailing += '/'
+    want_path = os.path.join(parent_dir, trailing)
+    wp_len = len(want_path)
+
+    with open(MNT_FILE) as fh:
+        for line in fh:
+            mnt_path = line.split()[1]
+            if mnt_path.startswith(want_path) and mnt_path != want_path:
+                print(f"- /{trailing}{mnt_path[wp_len:]}")
+
+if __name__ == '__main__':
+    parser = argparse.ArgumentParser(description="Output mount points as rsync excludes.", add_help=False)
+    parser.add_argument("--help", "-h", action="help", help="Output this help message and exit.")
+    parser.add_argument('path', metavar='PATH', nargs='?', default='/', help="Limit output to those within the PATH hierarchy.")
+    args = parser.parse_args()
+    main()
+
+# vim: sw=4 et

support/rrsync

@@ -156,6 +156,10 @@ def main():
     command = os.environ.get('SSH_ORIGINAL_COMMAND', None)
     if not command:
         die("Not invoked via sshd")
+    if command == 'true':
+        # Allow checking connectivity with "ssh <host> true".  (For example,
+        # rsbackup uses this.)
+        sys.exit(0)
     command = command.split(' ', 2)
     if command[0:1] != ['rsync']:
         die("SSH_ORIGINAL_COMMAND does not run rsync")
@@ -258,6 +262,9 @@ def main():
 
     if args.munge:
         rsync_opts.append('--munge-links')
+    
+    if args.no_overwrite:
+      rsync_opts.append('--ignore-existing')
 
     if not rsync_args:
         rsync_args = [ '.' ]
@@ -364,6 +371,7 @@ if __name__ == '__main__':
     arg_parser.add_argument('-munge', action='store_true', help="Enable rsync's --munge-links on the server side.")
     arg_parser.add_argument('-no-del', action='store_true', help="Disable rsync's --delete* and --remove* options.")
     arg_parser.add_argument('-no-lock', action='store_true', help="Avoid the single-run (per-user) lock check.")
+    arg_parser.add_argument('-no-overwrite', action='store_true', help="Prevent overwriting existing files by enforcing --ignore-existing")
     arg_parser.add_argument('-help', '-h', action='help', help="Output this help message and exit.")
     arg_parser.add_argument('dir', metavar='DIR', help="The restricted directory to use.")
     args = arg_parser.parse_args()

support/rrsync.1.md

@@ -5,7 +5,7 @@ rrsync - a script to setup restricted rsync users via ssh logins
 ## SYNOPSIS
 
 ```
-rrsync [-ro|-rw] [-munge] [-no-del] [-no-lock] DIR
+rrsync [-ro|-wo] [-munge] [-no-del] [-no-lock] [-no-overwrite]  DIR
 ```
 
 The single non-option argument specifies the restricted _DIR_ to use. It can be
@@ -85,6 +85,11 @@ The remainder of this manpage is dedicated to using the rrsync script.
 
     Avoid the single-run (per-user) lock check.  Useful with [`-munge`](#opt).
 
+0.  `-no-overwrite`
+
+    Enforce `--ignore-existing` on the server. Prevents overwriting existing
+    files when the server is the receiver.
+
 0.  `-help`, `-h`
 
     Output this help message and exit.
@@ -158,7 +163,7 @@ rsync is distributed under the GNU General Public License.  See the file
 [COPYING](COPYING) for details.
 
 An rsync web site is available at <https://rsync.samba.org/> and its github
-project is <https://github.com/WayneD/rsync>.
+project is <https://github.com/RsyncProject/rsync>.
 
 ## AUTHOR
 

t_chmod_secure.c

@@ -0,0 +1,117 @@
+/*
+ * Test harness for do_chmod_at(). Confirms the symlink-TOCTOU
+ * primitive used by CVE-2026-29518 (and its incomplete-fix follow-up
+ * for chmod) is closed by do_chmod_at(): a parent directory component
+ * being a symlink that escapes the receiver's confinement must be
+ * rejected, while a parent symlink that resolves *within* the tree
+ * must still work (so legitimate dir-symlinks are not regressed).
+ *
+ * Not linked into rsync itself.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include "rsync.h"
+
+#include <sys/stat.h>
+
+int dry_run = 0;
+int am_root = 0;
+int am_sender = 0;
+int read_only = 0;
+int list_only = 0;
+int copy_links = 0;
+int copy_unsafe_links = 0;
+extern int am_daemon, am_chrooted;
+
+short info_levels[COUNT_INFO], debug_levels[COUNT_DEBUG];
+
+static int errs = 0;
+
+static void check(const char *label, int actual_rc, int expect_ok,
+		  const char *path, mode_t expected_mode)
+{
+	struct stat st;
+	int got_ok = (actual_rc == 0);
+	if (got_ok != expect_ok) {
+		fprintf(stderr, "FAIL [%s]: rc=%d errno=%d (%s), expected %s\n",
+			label, actual_rc, errno, strerror(errno),
+			expect_ok ? "success" : "rejection");
+		errs++;
+		return;
+	}
+	if (path && stat(path, &st) < 0) {
+		fprintf(stderr, "FAIL [%s]: stat(%s) failed: %s\n",
+			label, path, strerror(errno));
+		errs++;
+		return;
+	}
+	if (path && (st.st_mode & 07777) != expected_mode) {
+		fprintf(stderr,
+			"FAIL [%s]: %s mode is 0%o, expected 0%o\n",
+			label, path, st.st_mode & 07777, expected_mode);
+		errs++;
+		return;
+	}
+	fprintf(stderr, "OK   [%s]\n", label);
+}
+
+int main(int argc, char **argv)
+{
+	if (argc != 2) {
+		fprintf(stderr, "usage: %s <module-dir>\n", argv[0]);
+		return 2;
+	}
+	if (chdir(argv[1]) < 0) {
+		perror("chdir");
+		return 2;
+	}
+
+	/* Simulate the daemon-without-chroot deployment that do_chmod_at()
+	 * defends. With am_daemon=0 or am_chrooted=1 the wrapper falls
+	 * through to plain do_chmod() and the symlink-race test would be
+	 * meaningless. */
+	am_daemon = 1;
+	am_chrooted = 0;
+
+	/* Test layout (all inside the directory we just chdir'd to):
+	 *
+	 *     ./realdir/sentinel        -- regular target file
+	 *     ./inside_link -> realdir  -- legitimate dir-symlink within the tree
+	 *     ./escape_link -> ../trap  -- attacker swap, target outside tree
+	 *     ../trap/sentinel          -- the file the attacker wants to alter
+	 *
+	 * The shell wrapper that calls this helper has set both sentinel
+	 * files to mode 0600 so we have a clean baseline to compare.
+	 */
+
+	/* Scenario A: legitimate parent dir-symlink, chmod must succeed. */
+	int rc = do_chmod_at("inside_link/sentinel", 0640);
+	check("A: legit dir-symlink within tree",
+	      rc, 1, "realdir/sentinel", 0640);
+
+	/* Scenario B: parent symlink escapes the tree -- chmod must be
+	 * rejected and the outside file's mode must be unchanged. */
+	rc = do_chmod_at("escape_link/sentinel", 0666);
+	check("B: parent symlink escapes tree (the attack)",
+	      rc, 0, "../trap/sentinel", 0600);
+
+	/* Scenario C: plain relative path with no symlink components,
+	 * regression check that the safe wrapper doesn't break the
+	 * normal case. */
+	rc = do_chmod_at("realdir/sentinel", 0644);
+	check("C: plain relative path (regression check)",
+	      rc, 1, "realdir/sentinel", 0644);
+
+	/* Scenario D: top-level file, no parent directory component.
+	 * Falls back to do_chmod(); should succeed. */
+	rc = do_chmod_at("topfile", 0640);
+	check("D: top-level file, no parent component",
+	      rc, 1, "topfile", 0640);
+
+	if (errs)
+		fprintf(stderr, "%d failure(s)\n", errs);
+	return errs ? 1 : 0;
+}

t_secure_relpath.c

@@ -0,0 +1,151 @@
+/*
+ * Test harness for secure_relative_open()'s front-door input
+ * validation. Codex audit Finding 5 noted that the existing check
+ *
+ *     if (strncmp(relpath, "../", 3) == 0 || strstr(relpath, "/../"))
+ *
+ * catches "../foo" and "foo/../bar" but misses bare ".." (an actual
+ * one-level escape on platforms that fall back to the per-component
+ * walk), as well as "a/..", "foo/..", and any other form that
+ * decomposes to a ".." component when split on "/". The kernel-
+ * enforced RESOLVE_BENEATH (Linux 5.6+) and O_RESOLVE_BENEATH
+ * (FreeBSD 13+, macOS 15+) reject these in-kernel; the per-
+ * component fallback used on NetBSD, OpenBSD, Solaris, Cygwin and
+ * pre-5.6 Linux does not, so the validation must happen at the
+ * front door.
+ *
+ * This helper invokes secure_relative_open() with each suspect
+ * input and checks both the failure (rc < 0) and the errno
+ * (EINVAL means "rejected at the front door"). Pre-fix, the kernel
+ * may reject with a different errno (EXDEV from RESOLVE_BENEATH);
+ * post-fix, the front-door check catches every variant up front
+ * with a consistent EINVAL across platforms.
+ *
+ * Not linked into rsync itself.
+ */
+
+#include "rsync.h"
+
+#include <sys/stat.h>
+
+int dry_run = 0;
+int am_root = 0;
+int am_sender = 0;
+int read_only = 0;
+int list_only = 0;
+int copy_links = 0;
+int copy_unsafe_links = 0;
+extern int am_daemon, am_chrooted;
+
+short info_levels[COUNT_INFO], debug_levels[COUNT_DEBUG];
+
+static int errs = 0;
+
+static void check_relpath(const char *relpath)
+{
+	int fd;
+	int saved_errno;
+
+	errno = 0;
+	fd = secure_relative_open(NULL, relpath, O_RDONLY | O_DIRECTORY, 0);
+	saved_errno = errno;
+
+	if (fd >= 0) {
+		fprintf(stderr,
+			"FAIL [relpath=%-12s]: returned valid fd %d (escape) -- expected -1 EINVAL\n",
+			relpath, fd);
+		close(fd);
+		errs++;
+		return;
+	}
+
+	if (saved_errno != EINVAL) {
+		fprintf(stderr,
+			"FAIL [relpath=%-12s]: rejected but errno=%d (%s), expected EINVAL\n",
+			relpath, saved_errno, strerror(saved_errno));
+		errs++;
+		return;
+	}
+
+	fprintf(stderr, "OK   [relpath=%-12s]: rejected with EINVAL\n", relpath);
+}
+
+static void check_basedir(const char *basedir)
+{
+	int fd;
+	int saved_errno;
+
+	errno = 0;
+	fd = secure_relative_open(basedir, "ok", O_RDONLY | O_DIRECTORY, 0);
+	saved_errno = errno;
+
+	if (fd >= 0) {
+		fprintf(stderr,
+			"FAIL [basedir=%-12s]: returned valid fd %d -- expected -1 EINVAL\n",
+			basedir, fd);
+		close(fd);
+		errs++;
+		return;
+	}
+
+	if (saved_errno != EINVAL) {
+		fprintf(stderr,
+			"FAIL [basedir=%-12s]: rejected but errno=%d (%s), expected EINVAL\n",
+			basedir, saved_errno, strerror(saved_errno));
+		errs++;
+		return;
+	}
+
+	fprintf(stderr, "OK   [basedir=%-12s]: rejected with EINVAL\n", basedir);
+}
+
+int main(int argc, char **argv)
+{
+	if (argc != 2) {
+		fprintf(stderr, "usage: %s <test-dir>\n", argv[0]);
+		return 2;
+	}
+	if (chdir(argv[1]) < 0) {
+		perror("chdir");
+		return 2;
+	}
+
+	/* secure_relative_open's daemon-only confinement protections only
+	 * fire when am_daemon && !am_chrooted (the threat model is the
+	 * daemon-no-chroot deployment), but the front-door input
+	 * validation runs unconditionally. We set am_daemon anyway so the
+	 * helper exercises the same code shape the receiver does. */
+	am_daemon = 1;
+	am_chrooted = 0;
+
+	mkdir("subdir", 0755);
+
+	/* Each of these relpaths must be rejected with EINVAL at the
+	 * secure_relative_open() front door. ".." is the actual one-level
+	 * escape; the others ("subdir/..", "subdir/../subdir") resolve
+	 * back to the start dir on systems that allow them, but we still
+	 * reject them as defence-in-depth: a path containing a ".." token
+	 * is suspicious and the caller should normalise before passing
+	 * it in. The "../foo" / "foo/../bar" / "/foo" / "/" cases are
+	 * regression checks for the existing checks. */
+	check_relpath("..");
+	check_relpath("../foo");
+	check_relpath("subdir/..");
+	check_relpath("subdir/../subdir");
+	check_relpath("foo/../bar");
+	check_relpath("/foo");
+	check_relpath("/");
+
+	/* Same checks against basedir (which the codex Finding 2 fix
+	 * routes through the same RESOLVE_BENEATH-equivalent). Absolute
+	 * basedirs are operator-trusted and intentionally not validated
+	 * here. */
+	check_basedir("..");
+	check_basedir("../subdir");
+	check_basedir("subdir/..");
+	check_basedir("foo/../bar");
+
+	if (errs)
+		fprintf(stderr, "\n%d failure(s)\n", errs);
+	return errs ? 1 : 0;
+}

t_stub.c

@@ -23,12 +23,14 @@
 
 int do_fsync = 0;
 int inplace = 0;
+int am_daemon = 0;
+int am_chrooted = 0;
 int modify_window = 0;
 int preallocate_files = 0;
 int protect_args = 0;
 int module_id = -1;
 int relative_paths = 0;
-int module_dirlen = 0;
+unsigned int module_dirlen = 0;
 int preserve_xattrs = 0;
 int preserve_perms = 0;
 int preserve_executability = 0;

t_unsafe.c

@@ -28,6 +28,9 @@ int am_root = 0;
 int am_sender = 1;
 int read_only = 0;
 int list_only = 0;
+int copy_links = 0;
+int copy_unsafe_links = 0;
+
 short info_levels[COUNT_INFO], debug_levels[COUNT_DEBUG];
 
 int

testsuite/acls-default.test

@@ -7,7 +7,7 @@
 
 . $suitedir/rsync.fns
 
-$RSYNC --version | grep "[, ] ACLs" >/dev/null || test_skipped "Rsync is configured without ACL support"
+$RSYNC -VV | grep '"ACLs": true' >/dev/null || test_skipped "Rsync is configured without ACL support"
 
 case "$setfacl_nodef" in
 true) test_skipped "I don't know how to use your setfacl command" ;;

testsuite/acls.test

@@ -7,7 +7,7 @@
 
 . $suitedir/rsync.fns
 
-$RSYNC --version | grep "[, ] ACLs" >/dev/null || test_skipped "Rsync is configured without ACL support"
+$RSYNC -VV | grep '"ACLs": true' >/dev/null || test_skipped "Rsync is configured without ACL support"
 
 makepath "$fromdir/foo"
 echo something >"$fromdir/file1"

testsuite/alt-dest-symlink-race.test

@@ -0,0 +1,113 @@
+#!/bin/sh
+
+# Copyright (C) 2026 by Andrew Tridgell
+
+# This program is distributable under the terms of the GNU GPL (see
+# COPYING).
+
+# Regression test for the basedir-confinement gap in
+# secure_relative_open(). The function opens basedir with a plain
+# openat(AT_FDCWD, basedir, O_RDONLY | O_DIRECTORY), without
+# RESOLVE_BENEATH or a per-component O_NOFOLLOW walk, so a parent
+# symlink ON basedir is followed unrestrictedly. RESOLVE_BENEATH is
+# then applied only to relpath, anchored at the wrong directory.
+#
+# The receiver's basis-file lookup at receiver.c passes
+# basis_dir[fnamecmp_type] (from --copy-dest / --link-dest /
+# --compare-dest -- all sender-controllable in daemon mode) as
+# basedir. A daemon-module attacker with write access can plant a
+# symlink at module/cd -> /outside, then run --link-dest=cd to
+# make the daemon's basis-file lookup resolve into /outside,
+# leaking the contents of daemon-readable files via the rsync
+# delta-rolling read-disclosure primitive.
+#
+# We detect the escape by leveraging --link-dest: when basis
+# matches source exactly (content + mtime + mode), --link-dest
+# hard-links the destination to the basis file. With the bug, the
+# destination ends up as a hard link to the outside-the-module
+# file (same inode). With the fix, no basis is found and the
+# destination is a fresh copy (different inode).
+#
+# The vulnerable code path is the same on every platform
+# (including the per-component fallback on systems without
+# RESOLVE_BENEATH), so this test is not platform-gated.
+
+. "$suitedir/rsync.fns"
+
+mod="$scratchdir/module"
+outside="$scratchdir/outside"
+src="$scratchdir/src"
+conf="$scratchdir/test-rsyncd.conf"
+
+rm -rf "$mod" "$outside" "$src"
+mkdir -p "$mod" "$outside" "$src"
+
+# Portable inode-number helper (GNU coreutils stat -c, BSD stat -f).
+file_inode() {
+    stat -c %i "$1" 2>/dev/null || stat -f %i "$1"
+}
+
+# Outside-the-module file an attacker would like the daemon to
+# treat as a basis.
+echo "OUTSIDE_SECRET_DATA" > "$outside/target.txt"
+chmod 0644 "$outside/target.txt"
+
+# The symlink trap planted in the module by the local attacker.
+ln -s "$outside" "$mod/cd"
+
+# Source file matches outside/target.txt exactly (content + mtime
+# + mode) so --link-dest will hard-link the destination to the
+# basis file iff the daemon's basedir lookup reaches outside/.
+echo "OUTSIDE_SECRET_DATA" > "$src/target.txt"
+touch -r "$outside/target.txt" "$src/target.txt"
+chmod 0644 "$src/target.txt"
+
+# When running as root the daemon would drop to "nobody" by
+# default, which can't write into the test scratch dir. Force the
+# daemon to keep our uid/gid in that case so the basis-link
+# transfer can actually create the destination file. (Non-root
+# can't specify uid/gid in rsyncd.conf -- comment them out then.)
+my_uid=`get_testuid`
+root_uid=`get_rootuid`
+root_gid=`get_rootgid`
+uid_setting="uid = $root_uid"
+gid_setting="gid = $root_gid"
+if test x"$my_uid" != x"$root_uid"; then
+    uid_setting="#$uid_setting"
+    gid_setting="#$gid_setting"
+fi
+
+cat > "$conf" <<EOF
+use chroot = no
+$uid_setting
+$gid_setting
+log file = $scratchdir/rsyncd.log
+[upload]
+    path = $mod
+    use chroot = no
+    read only = no
+EOF
+
+# Recursive --link-dest push directly into the module root. We
+# avoid pushing into a destination subdir because the receiver
+# would chdir into it before resolving --link-dest, making the
+# relative basedir "cd" resolve in the wrong CWD and masking the
+# bug. The realistic attack pushes into the module root (or the
+# attacker uses a basedir path that resolves correctly from
+# whichever subdir the receiver chdirs into).
+RSYNC_CONNECT_PROG="$RSYNC --config=$conf --daemon" \
+    $RSYNC -rtp --link-dest=cd "$src/" rsync://localhost/upload/ \
+    >/dev/null 2>&1 || true
+
+if [ ! -f "$mod/target.txt" ]; then
+    test_fail "destination file was not created -- daemon transfer failed before the test could observe the basedir behaviour"
+fi
+
+outside_inode=$(file_inode "$outside/target.txt")
+dst_inode=$(file_inode "$mod/target.txt")
+
+if [ "$outside_inode" = "$dst_inode" ]; then
+    test_fail "basedir-escape: --link-dest hard-linked module/target.txt to outside/target.txt (inode $outside_inode); daemon's basis-file lookup followed the parent symlink on the basedir"
+fi
+
+exit 0

testsuite/atimes.test

@@ -4,7 +4,7 @@
 
 . "$suitedir/rsync.fns"
 
-$RSYNC --version | grep "[, ] atimes" >/dev/null || test_skipped "Rsync is configured without atimes support"
+$RSYNC -VV | grep '"atimes": true' >/dev/null || test_skipped "Rsync is configured without atimes support"
 
 mkdir "$fromdir"
 

testsuite/bare-do-open-symlink-race.test

@@ -0,0 +1,206 @@
+#!/bin/sh
+
+# Copyright (C) 2026 by Andrew Tridgell
+
+# This program is distributable under the terms of the GNU GPL (see
+# COPYING).
+
+# Regression test for codex audit Findings 3b and 3c:
+#
+#   3b: generator.c:1905 -- the in-place backup creation opens
+#       backupptr via bare do_open(O_WRONLY|O_CREAT|O_TRUNC|O_EXCL).
+#       With --backup-dir set to an attacker-planted parent symlink,
+#       the backup file is written outside the module under the
+#       daemon's authority.
+#
+#   3c-symlink: syscall.c:207 -- do_symlink_at falls through to bare
+#       do_symlink for am_root < 0 (fake-super), which then opens
+#       the destination path with bare open() (final-component
+#       fake-super file). A parent symlink on the destination path
+#       redirects the file creation outside the module.
+#
+#   3c-mknod: syscall.c:506 -- do_mknod_at falls through to bare
+#       do_mknod for am_root < 0, same path-based open(). For
+#       FIFOs/sockets/devices the bare path is also used.
+#
+# Each scenario plants a "secret" file outside the module at a
+# location the symlink trap points to. The check is that the
+# outside file's content and mode are unchanged after the attack
+# attempt.
+
+. "$suitedir/rsync.fns"
+
+# All three scenarios depend on receiver-side daemon code paths
+# that are only secured on platforms with a working
+# secure_relative_open. The chdir/chmod tests already skip the
+# same set; mirror that.
+case "$(uname -s)" in
+    SunOS|OpenBSD|NetBSD|CYGWIN*)
+        test_skipped "secure_relative_open relies on RESOLVE_BENEATH-equivalent kernel support not available on $(uname -s)"
+        ;;
+esac
+
+mod="$scratchdir/module"
+outside="$scratchdir/outside"
+src="$scratchdir/src"
+conf="$scratchdir/test-rsyncd.conf"
+
+# Portable inode-and-mode helpers.
+file_mode() {
+    stat -c %a "$1" 2>/dev/null || stat -f %Lp "$1"
+}
+
+setup() {
+    rm -rf "$mod" "$outside" "$src"
+    mkdir -p "$mod" "$outside" "$src"
+
+    echo "OUTSIDE_PROTECTED_DATA" > "$outside/target.txt"
+    chmod 0644 "$outside/target.txt"
+    outside_pristine="$scratchdir/outside-pristine.txt"
+    cp -p "$outside/target.txt" "$outside_pristine"
+
+    ln -s "$outside" "$mod/cd"
+}
+
+verify_outside_unchanged() {
+    label="$1"
+    mode=$(file_mode "$outside/target.txt")
+    case "$mode" in
+        644|0644) ;;
+        *) test_fail "$label: outside/target.txt mode changed from 644 to $mode" ;;
+    esac
+    if ! cmp -s "$outside/target.txt" "$outside_pristine"; then
+        test_fail "$label: outside/target.txt content changed -- daemon followed the cd symlink"
+    fi
+}
+
+verify_outside_unchanged_or_absent() {
+    label="$1"
+    target="$2"  # specific file under outside/ to check absence of
+    if [ -e "$outside/$target" ]; then
+        test_fail "$label: outside/$target was created -- daemon followed the cd symlink"
+    fi
+}
+
+# When running as root the daemon would drop to "nobody" by default
+# and fail to write into the test scratch dir. Force it to keep our
+# uid/gid in that case so the receiver actually runs the code paths
+# we want to test.
+my_uid=`get_testuid`
+root_uid=`get_rootuid`
+root_gid=`get_rootgid`
+uid_setting="uid = $root_uid"
+gid_setting="gid = $root_gid"
+if test x"$my_uid" != x"$root_uid"; then
+    uid_setting="#$uid_setting"
+    gid_setting="#$gid_setting"
+fi
+
+
+############################################################
+# Scenario 3b: --inplace --backup --backup-dir=cd
+#
+# Pre-create module/target.txt so the receiver enters the in-place
+# update path; a backup of the existing content must be made
+# before the update. With --backup-dir=cd, backupptr resolves to
+# "cd/target.txt"; with the bug, robust_unlink and the bare
+# do_open at generator.c:1905 both follow the cd symlink, the
+# unlink deletes outside/target.txt and the create writes the
+# pre-existing module/target.txt content there.
+############################################################
+
+setup
+echo "EXISTING_MODULE_DATA" > "$mod/target.txt"
+chmod 0666 "$mod/target.txt"
+echo "NEW_DATA_FROM_SENDER" > "$src/target.txt"
+chmod 0644 "$src/target.txt"
+
+cat > "$conf" <<EOF
+use chroot = no
+$uid_setting
+$gid_setting
+log file = $scratchdir/rsyncd.log
+[upload]
+    path = $mod
+    use chroot = no
+    read only = no
+EOF
+
+RSYNC_CONNECT_PROG="$RSYNC --config=$conf --daemon" \
+    $RSYNC --inplace --backup --backup-dir=cd "$src/target.txt" \
+    rsync://localhost/upload/target.txt >/dev/null 2>&1 || true
+
+verify_outside_unchanged "3b inplace+backup-dir=cd"
+
+
+############################################################
+# Scenario 3c-symlink: fake-super symlink push to a path with a
+# symlinked parent
+#
+# With "fake super = yes" set on the module, the receiver
+# represents symlinks as fake-super files (regular files with the
+# link target written to them). The path-based open() in
+# do_symlink's fake-super branch follows parent symlinks. We push
+# a single symlink to the destination path "cd/sym" so the
+# receiver's create-file call lands at "cd/sym" relative to the
+# module root, where cd is the symlink trap.
+############################################################
+
+setup
+
+mkdir -p "$src/cd"
+ln -s /etc/passwd "$src/cd/sym"
+
+cat > "$conf" <<EOF
+use chroot = no
+$uid_setting
+$gid_setting
+log file = $scratchdir/rsyncd.log
+[upload_fake]
+    path = $mod
+    use chroot = no
+    read only = no
+    fake super = yes
+EOF
+
+RSYNC_CONNECT_PROG="$RSYNC --config=$conf --daemon" \
+    $RSYNC -rl "$src/" rsync://localhost/upload_fake/ >/dev/null 2>&1 || true
+
+verify_outside_unchanged_or_absent "3c-symlink fake-super symlink push" "sym"
+
+
+############################################################
+# Scenario 3c-mknod: fake-super FIFO push to a path with a
+# symlinked parent
+#
+# Similar to 3c-symlink but for special files. mkfifo works
+# without root; we push a FIFO and verify the receiver doesn't
+# create a fake-super file at outside/fifo.
+############################################################
+
+setup
+
+mkdir -p "$src/cd"
+mkfifo "$src/cd/fifo" 2>/dev/null
+if [ ! -p "$src/cd/fifo" ]; then
+    test_skipped "mkfifo unavailable; cannot exercise 3c-mknod"
+fi
+
+cat > "$conf" <<EOF
+use chroot = no
+$uid_setting
+$gid_setting
+log file = $scratchdir/rsyncd.log
+[upload_fake]
+    path = $mod
+    use chroot = no
+    read only = no
+    fake super = yes
+EOF
+
+RSYNC_CONNECT_PROG="$RSYNC --config=$conf --daemon" \
+    $RSYNC -rD "$src/" rsync://localhost/upload_fake/ >/dev/null 2>&1 || true
+
+verify_outside_unchanged_or_absent "3c-mknod fake-super FIFO push" "fifo"
+
+exit 0

testsuite/chdir-symlink-race.test

@@ -0,0 +1,135 @@
+#!/bin/sh
+
+# Copyright (C) 2026 by Andrew Tridgell
+
+# This program is distributable under the terms of the GNU GPL (see
+# COPYING).
+
+# Regression test for the symlink-TOCTOU class of bug at the receiver's
+# chdir(). After the CVE-2026-29518 fix to secure_relative_open(), an
+# attack remained where the receiver's chdir() into a destination
+# subdirectory followed an attacker-planted symlink, escaping the
+# module. Every subsequent path-relative syscall (open, chmod, lchown,
+# utimes, etc.) inherited the escape -- secure_relative_open's
+# RESOLVE_BENEATH anchor itself was outside the module by then, so it
+# stopped protecting against anything.
+#
+# This test runs an actual rsync daemon (via RSYNC_CONNECT_PROG to
+# avoid the network) configured with "use chroot = no", plants a
+# symlink at module/subdir -> ../outside, and runs four flavours of
+# rsync transfer that previously all reached files in ../outside:
+#
+#   1. single-file dest = subdir/target.txt    (the original poc_chmod)
+#   2. -r src/subdir/ to upload/subdir/        (the chdir-escape case)
+#   3. -r src/subdir/ to upload/subdir/        (no --size-only: forces basis read+write)
+#   4. -r src/ to upload/                      (was already protected by the
+#                                               original CVE-2026-29518 fix;
+#                                               regression-checked here)
+#
+# All four must leave the outside-the-module sentinel file's mode AND
+# content unchanged.
+
+. "$suitedir/rsync.fns"
+
+case "$(uname -s)" in
+    SunOS|OpenBSD|NetBSD|CYGWIN*)
+	test_skipped "secure chdir relies on RESOLVE_BENEATH-equivalent kernel support not available on $(uname -s)"
+	;;
+esac
+
+mod="$scratchdir/module"
+outside="$scratchdir/outside"
+src="$scratchdir/src"
+conf="$scratchdir/test-rsyncd.conf"
+
+rm -rf "$mod" "$outside" "$src"
+mkdir -p "$mod" "$outside" "$src" "$src/subdir"
+
+# Portable octal-mode helper -- macOS and FreeBSD's stat use -f, GNU
+# coreutils stat uses -c.
+file_mode() {
+    stat -c %a "$1" 2>/dev/null || stat -f %Lp "$1"
+}
+
+# The "secret" file outside the module the attacker is trying to alter.
+# Save a pristine copy alongside it so we can compare with cmp(1) rather
+# than depending on sha1sum/shasum/sha1, which differ across platforms.
+echo "OUTSIDE_SECRET_DATA" > "$outside/target.txt"
+chmod 0600 "$outside/target.txt"
+outside_pristine="$scratchdir/outside-pristine.txt"
+cp -p "$outside/target.txt" "$outside_pristine"
+
+# Symlink trap planted in the module by the local attacker.
+ln -s "$outside" "$mod/subdir"
+
+# Source files the sender will push: same size as the outside target,
+# different content, mode 0666 (the perms the attacker tries to push).
+SIZE=$(stat -c %s "$outside/target.txt" 2>/dev/null \
+       || stat -f %z "$outside/target.txt")
+head -c "$SIZE" /dev/urandom > "$src/target.txt"
+head -c "$SIZE" /dev/urandom > "$src/subdir/target.txt"
+chmod 0666 "$src/target.txt" "$src/subdir/target.txt"
+
+cat > "$conf" <<EOF
+use chroot = no
+log file = $scratchdir/rsyncd.log
+[upload]
+    path = $mod
+    use chroot = no
+    read only = no
+EOF
+
+reset_outside() {
+    chmod 0600 "$outside/target.txt"
+    echo "OUTSIDE_SECRET_DATA" > "$outside/target.txt"
+}
+
+verify_unchanged() {
+    label="$1"
+    mode=$(file_mode "$outside/target.txt")
+    case "$mode" in
+	600|0600) ;;
+	*) test_fail "$label: outside file mode changed from 600 to $mode (chmod escape)" ;;
+    esac
+    if ! cmp -s "$outside/target.txt" "$outside_pristine"; then
+	test_fail "$label: outside file content changed (write escape)"
+    fi
+}
+
+run_attack() {
+    label="$1"; shift
+    reset_outside
+    RSYNC_CONNECT_PROG="$RSYNC --config=$conf --daemon" \
+	$RSYNC "$@" >/dev/null 2>&1 || true
+    verify_unchanged "$label"
+}
+
+# 1. The original poc_chmod scenario: single file, dest path with
+#    the symlinked subdir as a path component. With --size-only the
+#    receiver normally skips the basis open and goes straight to chmod
+#    -- only the chdir-escape blocks the chmod from reaching outside.
+run_attack "single-file --size-only" \
+    -tp --size-only \
+    "$src/target.txt" rsync://localhost/upload/subdir/target.txt
+
+# 2. -r push into the symlinked subdir: receiver chdir's into "subdir",
+#    follows the symlink, ends up in outside.
+run_attack "-r --size-only into subdir/" \
+    -rtp --size-only \
+    "$src/subdir/" rsync://localhost/upload/subdir/
+
+# 3. Same but no --size-only -- forces the basis-file open and a real
+#    rename, so this exercises the read-disclosure and write-escape
+#    paths together.
+run_attack "-r without --size-only into subdir/" \
+    -rtp \
+    "$src/subdir/" rsync://localhost/upload/subdir/
+
+# 4. -r src/ to upload/ -- this case was already covered by the
+#    original CVE-2026-29518 fix because the receiver stays at module
+#    root and operates on slashed paths. Regression check.
+run_attack "-r --size-only into upload/ root" \
+    -rtp --size-only \
+    "$src/" rsync://localhost/upload/
+
+exit 0

testsuite/chmod-symlink-race.test

@@ -0,0 +1,68 @@
+#!/bin/sh
+
+# Copyright (C) 2026 by Andrew Tridgell
+
+# This program is distributable under the terms of the GNU GPL (see
+# COPYING).
+
+# Regression test for the symlink-TOCTOU class of bug applied to
+# chmod() on the receiver side. The CVE-2026-29518 fix used
+# secure_relative_open() for the basis-file open, but every other
+# path-based syscall the receiver runs on sender-controllable paths
+# is vulnerable to the same primitive: a local attacker swaps a
+# symlink into one of the parent directory components between the
+# receiver's check and its act, and the syscall escapes the module.
+#
+# This test exercises the new do_chmod_at() wrapper via the
+# t_chmod_secure helper. The helper sets up two scenarios:
+#   - a parent dir-symlink that resolves WITHIN the module tree
+#     (legitimate -K-style use, must continue to work)
+#   - a parent dir-symlink that escapes the module tree (the
+#     attack, must be rejected)
+# plus two regression scenarios (plain relative path, top-level
+# file) that just confirm the safe wrapper doesn't break the
+# normal case.
+#
+# The kernel-enforced "stay below dirfd" path resolution is
+# only available on Linux 5.6+, FreeBSD 13+, and macOS 15+.
+# Skip on platforms that fall back to per-component O_NOFOLLOW
+# (Solaris, OpenBSD, NetBSD, Cygwin); the per-component fallback
+# would also reject the attack but the legitimate dir-symlink
+# scenario would fail there.
+
+. "$suitedir/rsync.fns"
+
+case "$(uname -s)" in
+    SunOS|OpenBSD|NetBSD|CYGWIN*)
+	test_skipped "do_chmod_at relies on RESOLVE_BENEATH-equivalent kernel support not available on $(uname -s)"
+	;;
+esac
+
+mod="$scratchdir/module"
+trap_outside="$scratchdir/trap"
+rm -rf "$mod" "$trap_outside"
+mkdir -p "$mod/realdir" "$trap_outside"
+
+# Set up the four file-system objects the helper expects:
+echo bystander > "$mod/realdir/sentinel"
+chmod 0600 "$mod/realdir/sentinel"
+echo target > "$trap_outside/sentinel"
+chmod 0600 "$trap_outside/sentinel"
+ln -s realdir "$mod/inside_link"
+ln -s ../trap "$mod/escape_link"
+echo top > "$mod/topfile"
+chmod 0600 "$mod/topfile"
+
+"$TOOLDIR/t_chmod_secure" "$mod" || \
+    test_fail "t_chmod_secure reported failures (see stderr above)"
+
+# Sanity-check from the shell side too: the outside file's mode must
+# still be 0600 -- the helper checked this, but a second look from
+# the shell guards against a helper-internal stat() bug.
+mode=$(stat -c '%a' "$trap_outside/sentinel" 2>/dev/null \
+       || stat -f '%Lp' "$trap_outside/sentinel" 2>/dev/null)
+if [ "$mode" != "600" ]; then
+    test_fail "outside sentinel mode changed from 600 to $mode -- chmod escaped the module"
+fi
+
+exit 0

testsuite/chown.test

@@ -15,7 +15,7 @@
 
 case $0 in
 *fake*)
-    $RSYNC --version | grep "[, ] xattrs" >/dev/null || test_skipped "Rsync needs xattrs for fake device tests"
+    $RSYNC -VV | grep '"xattrs": true' >/dev/null || test_skipped "Rsync needs xattrs for fake device tests"
     RSYNC="$RSYNC --fake-super"
     TLS_ARGS="$TLS_ARGS --fake-super"
     case "$HOST_OS" in

testsuite/clean-fname-underflow.test

@@ -0,0 +1,68 @@
+#!/bin/sh
+# clean-fname-underflow.test
+# Ensure clean_fname() does not read-before-buffer when collapsing "..".
+# This exercises the --server path where a crafted merge filename hits clean_fname().
+#
+# Usage:
+#   ./configure && make
+#   make check TESTS='clean-fname-underflow.test'
+
+set -eu
+
+# Try to find the just-built rsync binary if RSYNC_BIN isn't set.
+if [ -z "${RSYNC_BIN:-}" ]; then
+  if [ -x "./rsync" ]; then
+    RSYNC_BIN=./rsync
+  elif [ -x "../rsync" ]; then
+    RSYNC_BIN=../rsync
+  else
+    RSYNC_BIN=rsync
+  fi
+fi
+
+workdir="${TMPDIR:-/tmp}/rsync-clean-fname.$$"
+mkdir -p "$workdir"
+# Solaris's rm refuses to delete a directory in the path of the cwd,
+# so cd out before the trap runs.
+trap 'cd /; rm -rf "$workdir"' EXIT INT TERM
+cd "$workdir"
+
+# Minimal rsyncd.conf using chroot so the crafted path reaches the server parser.
+cat > rsyncd.conf <<'EOF'
+pid file = rsyncd.pid
+use chroot = true
+[mod]
+    path = ./mod
+    read only = false
+EOF
+mkdir -p mod
+
+# Start daemon on a random high port.
+PORT=$(awk 'BEGIN{srand(); printf "%d", 20000+int(rand()*20000)}')
+"$RSYNC_BIN" --daemon --no-detach --config=rsyncd.conf --port="$PORT" >/dev/null 2>&1 &
+DAEMON_PID=$!
+# Give the daemon a moment to come up.
+sleep 0.3
+
+# Invoke the server-side path. We don't need a real transfer; we just want to
+# ensure clean_fname() doesn't crash when given "a/../test" via --filter=merge.
+EXIT_OK=0
+if "$RSYNC_BIN"     --server --sender -vlr     --filter='merge a/../test'     . mod/  >/dev/null 2>&1; then
+  EXIT_OK=1
+else
+  status=$?
+  # Non-zero exit is expected for bogus input; ensure it wasn't a signal/crash.
+  if [ $status -lt 128 ]; then
+    EXIT_OK=1
+  fi
+fi
+
+kill "$DAEMON_PID" >/dev/null 2>&1 || true
+
+if [ "$EXIT_OK" -ne 1 ]; then
+  echo "clean-fname-underflow.test: rsync exited due to a signal or unexpected status"
+  exit 1
+fi
+
+echo "OK: clean_fname() handled 'a/../test' without crashing"
+exit 0

testsuite/copy-dest-source-symlink.test

@@ -0,0 +1,98 @@
+#!/bin/sh
+
+# Copyright (C) 2026 by Andrew Tridgell
+
+# This program is distributable under the terms of the GNU GPL (see
+# COPYING).
+
+# Regression test for codex audit Finding 3a: copy_file()'s source
+# open in copy_altdest_file() is via do_open_nofollow(), which only
+# refuses a final-component symlink. Parent components are still
+# resolved with normal symlink-following. A daemon module attacker
+# who plants a parent symlink at module/cd -> /outside, then runs
+# --copy-dest=cd against a source file matching the size+mtime of
+# /outside/target.txt, drives the receiver to:
+#
+#   1. Find a match-level >= 2 basis at "cd/target.txt"
+#   2. Call copy_altdest_file -> copy_file(src="cd/target.txt", ...)
+#   3. do_open_nofollow follows the "cd" parent symlink and reads
+#      the contents of /outside/target.txt under the daemon's
+#      authority
+#   4. Copy that content into the module destination
+#
+# Result: outside/target.txt content lands at module/target.txt,
+# accessible to the attacker on a subsequent pull.
+#
+# We detect by content: src/target.txt and outside/target.txt have
+# identical metadata (size + mtime + mode) but different content.
+# After the transfer, module/target.txt should match src (no
+# basedir escape) -- if it matches outside, the bug copied across
+# the symlink boundary.
+
+. "$suitedir/rsync.fns"
+
+mod="$scratchdir/module"
+outside="$scratchdir/outside"
+src="$scratchdir/src"
+conf="$scratchdir/test-rsyncd.conf"
+
+rm -rf "$mod" "$outside" "$src"
+mkdir -p "$mod" "$outside" "$src"
+
+# Outside-the-module file the daemon should not read on the
+# attacker's behalf.
+echo "OUTSIDE_LEAKED_DATA!" > "$outside/target.txt"
+chmod 0644 "$outside/target.txt"
+
+# The symlink trap.
+ln -s "$outside" "$mod/cd"
+
+# Source: same size, same mtime, same mode as outside -- so the
+# generator's link_stat + quick_check_ok finds a match-level >= 2
+# basis and calls copy_altdest_file.
+echo "ATTACKER_KNOWN_DATA!" > "$src/target.txt"
+touch -r "$outside/target.txt" "$src/target.txt"
+chmod 0644 "$src/target.txt"
+
+# When running as root the daemon would drop to "nobody" by
+# default and fail to mkstemp in the scratch dir; force it to
+# keep our uid/gid in that case.
+my_uid=`get_testuid`
+root_uid=`get_rootuid`
+root_gid=`get_rootgid`
+uid_setting="uid = $root_uid"
+gid_setting="gid = $root_gid"
+if test x"$my_uid" != x"$root_uid"; then
+    uid_setting="#$uid_setting"
+    gid_setting="#$gid_setting"
+fi
+
+cat > "$conf" <<EOF
+use chroot = no
+$uid_setting
+$gid_setting
+log file = $scratchdir/rsyncd.log
+[upload]
+    path = $mod
+    use chroot = no
+    read only = no
+EOF
+
+# --copy-dest push to module root.
+RSYNC_CONNECT_PROG="$RSYNC --config=$conf --daemon" \
+    $RSYNC -rtp --copy-dest=cd "$src/" rsync://localhost/upload/ \
+    >/dev/null 2>&1 || true
+
+if [ ! -f "$mod/target.txt" ]; then
+    test_fail "destination file was not created -- daemon transfer failed before the test could observe the basedir behaviour"
+fi
+
+if cmp -s "$mod/target.txt" "$outside/target.txt"; then
+    test_fail "basedir-escape via copy_file source: module/target.txt now contains the contents of outside/target.txt -- daemon read /outside via the cd symlink and copied it into the module"
+fi
+
+if ! cmp -s "$mod/target.txt" "$src/target.txt"; then
+    test_fail "destination doesn't match source content (and isn't outside content either): unexpected state"
+fi
+
+exit 0

testsuite/crtimes.test

@@ -4,7 +4,7 @@
 
 . "$suitedir/rsync.fns"
 
-$RSYNC --version | grep "[, ] crtimes" >/dev/null || test_skipped "Rsync is configured without crtimes support"
+$RSYNC -VV | grep '"crtimes": true' >/dev/null || test_skipped "Rsync is configured without crtimes support"
 
 # Setting an older time via touch sets the create time to the mtime.
 # Setting it to a newer time affects just the mtime.

testsuite/daemon-chroot-acl.test

@@ -0,0 +1,111 @@
+#!/bin/sh
+
+# Copyright (C) 2026 by Andrew Tridgell
+
+# This program is distributable under the terms of the GNU GPL (see
+# COPYING).
+
+# Regression test for GHSA-rjfm-3w2m-jf4f: a hostname-based "hosts deny"
+# rule must still match when the daemon performs a 'daemon chroot' and
+# the chroot does not contain the NSS files glibc needs for reverse DNS.
+#
+# Pre-fix, reverse DNS happened *after* the daemon chroot. With an empty
+# chroot the NSS lookup failed, client_name() returned "UNKNOWN", and a
+# deny rule referring to the connecting hostname silently failed to
+# match.
+#
+# Two scenarios are exercised so we can distinguish the case the fix
+# definitely covers from the per-module path that may still be
+# vulnerable:
+#   A. global  "reverse lookup = yes"           (covered by b6abdb4c)
+#   B. only module "reverse lookup = yes"       (gap to verify)
+
+. "$suitedir/rsync.fns"
+
+case `uname -s` in
+Linux*) ;;
+*) test_skipped "test is Linux-specific (uses chroot+unshare)" ;;
+esac
+
+# We need CAP_SYS_CHROOT. Re-exec under a user namespace if not root.
+if ! chroot / /bin/true 2>/dev/null; then
+    if [ -z "$RSYNC_UNSHARED" ] && unshare --user --map-root-user true 2>/dev/null; then
+	echo "Re-running under unshare --user --map-root-user..."
+	RSYNC_UNSHARED=1 exec unshare --user --map-root-user "$SHELL_PATH" $RUNSHFLAGS "$0"
+    fi
+    test_skipped "need CAP_SYS_CHROOT (root or unshare --user --map-root-user)"
+fi
+
+# We need 127.0.0.1 to reverse-resolve to a real hostname while NSS is
+# still working (i.e. before the daemon's chroot). The daemon will
+# look that name up itself as part of its hostname-based ACL check;
+# we then deny that name and assert the connection is rejected.
+client_hostname=`getent hosts 127.0.0.1 2>/dev/null | awk 'NR==1 {print $2}'`
+if [ -z "$client_hostname" ] || [ "$client_hostname" = "127.0.0.1" ]; then
+    test_skipped "no reverse DNS for 127.0.0.1"
+fi
+
+chrootdir="$scratchdir/chroot"
+rm -rf "$chrootdir"
+mkdir -p "$chrootdir/modroot"
+echo "from chroot" > "$chrootdir/modroot/file1"
+
+conf="$scratchdir/test-rsyncd.conf"
+logfile="$scratchdir/rsyncd.log"
+
+write_conf() {
+    cat >"$conf" <<EOF
+use chroot = no
+log file = $logfile
+daemon chroot = $chrootdir
+reverse lookup = $1
+hosts deny = $client_hostname
+max verbosity = 4
+
+[chrootmod]
+    path = /modroot
+    read only = yes
+    reverse lookup = $2
+EOF
+}
+
+# Run a transfer and return 0 if the daemon refused with @ERROR access
+# denied (the expected outcome when the deny rule matches).
+run_check() {
+    label="$1"
+
+    rm -f "$logfile"
+    rm -rf "$todir"
+    mkdir -p "$todir"
+
+    out="$scratchdir/run.out"
+
+    RSYNC_CONNECT_PROG="$RSYNC --config=$conf --daemon" \
+	$RSYNC -av localhost::chrootmod/ "$todir/" >"$out" 2>&1
+    rc=$?
+
+    echo "----- $label (rsync exit $rc):"
+    cat "$out"
+    echo "----- daemon log:"
+    [ -f "$logfile" ] && cat "$logfile"
+    echo "-----"
+
+    grep -q '@ERROR.*access denied' "$out"
+}
+
+# Scenario A: global reverse lookup. Covered by b6abdb4c.
+write_conf yes yes
+if ! run_check "Scenario A (global reverse lookup = yes)"; then
+    test_fail "Scenario A: hostname deny rule was bypassed"
+fi
+
+# Scenario B: only the per-module reverse-lookup setting is enabled.
+# The b6abdb4c fix only pre-warms client_name()'s cache when the
+# global setting is on, so the post-chroot lookup in this path may
+# still produce "UNKNOWN" and bypass the deny rule.
+write_conf no yes
+if ! run_check "Scenario B (per-module reverse lookup only)"; then
+    test_fail "Scenario B: hostname deny rule was bypassed (per-module reverse lookup with daemon chroot still has the bypass)"
+fi
+
+exit 0

testsuite/daemon-refuse-compress.test

@@ -0,0 +1,51 @@
+#!/bin/sh
+
+# Copyright (C) 2026 by Andrew Tridgell
+
+# This program is distributable under the terms of the GNU GPL (see
+# COPYING).
+
+# Test that a daemon module configured with "refuse options = compress"
+# rejects clients that ask for compression and still serves the same
+# transfer when the client does not.
+
+. "$suitedir/rsync.fns"
+
+build_rsyncd_conf
+
+# Append a module that refuses --compress (-z).
+cat >>"$conf" <<EOF
+
+[no-compress]
+	path = $fromdir
+	read only = yes
+	refuse options = compress
+EOF
+
+RSYNC_CONNECT_PROG="$RSYNC --config=$conf --daemon"
+export RSYNC_CONNECT_PROG
+
+hands_setup
+
+# Build a reference tree mirroring the daemon's global exclude rule.
+$RSYNC -av --exclude=foobar.baz "$fromdir/" "$chkdir/"
+
+# A compressed transfer must be refused.
+errlog="$scratchdir/refuse.err"
+if $RSYNC -avz localhost::no-compress/ "$todir/" >/dev/null 2>"$errlog"; then
+    cat "$errlog" >&2
+    test_fail "compressed transfer was not refused"
+fi
+
+grep -- '--compress' "$errlog" >/dev/null || {
+    cat "$errlog" >&2
+    test_fail "expected refuse error mentioning --compress"
+}
+
+# The same transfer without -z must succeed.
+rm -rf "$todir"
+mkdir "$todir"
+checkit "$RSYNC -av localhost::no-compress/ '$todir/'" "$chkdir" "$todir"
+
+# The script would have aborted on error, so getting here means we've won.
+exit 0