Commit Graph

10 Commits

Author SHA1 Message Date
Will Norris
3ec5be3f51 all: remove AUTHORS file and references to it
This file was never truly necessary and has never actually been used in
the history of Tailscale's open source releases.

A Brief History of AUTHORS files
---

The AUTHORS file was a pattern developed at Google, originally for
Chromium, then adopted by Go and a bunch of other projects. The problem
was that Chromium originally had a copyright line only recognizing
Google as the copyright holder. Because Google (and most open source
projects) do not require copyright assignemnt for contributions, each
contributor maintains their copyright. Some large corporate contributors
then tried to add their own name to the copyright line in the LICENSE
file or in file headers. This quickly becomes unwieldy, and puts a
tremendous burden on anyone building on top of Chromium, since the
license requires that they keep all copyright lines intact.

The compromise was to create an AUTHORS file that would list all of the
copyright holders. The LICENSE file and source file headers would then
include that list by reference, listing the copyright holder as "The
Chromium Authors".

This also become cumbersome to simply keep the file up to date with a
high rate of new contributors. Plus it's not always obvious who the
copyright holder is. Sometimes it is the individual making the
contribution, but many times it may be their employer. There is no way
for the proejct maintainer to know.

Eventually, Google changed their policy to no longer recommend trying to
keep the AUTHORS file up to date proactively, and instead to only add to
it when requested: https://opensource.google/docs/releasing/authors.
They are also clear that:

> Adding contributors to the AUTHORS file is entirely within the
> project's discretion and has no implications for copyright ownership.

It was primarily added to appease a small number of large contributors
that insisted that they be recognized as copyright holders (which was
entirely their right to do). But it's not truly necessary, and not even
the most accurate way of identifying contributors and/or copyright
holders.

In practice, we've never added anyone to our AUTHORS file. It only lists
Tailscale, so it's not really serving any purpose. It also causes
confusion because Tailscalars put the "Tailscale Inc & AUTHORS" header
in other open source repos which don't actually have an AUTHORS file, so
it's ambiguous what that means.

Instead, we just acknowledge that the contributors to Tailscale (whoever
they are) are copyright holders for their individual contributions. We
also have the benefit of using the DCO (developercertificate.org) which
provides some additional certification of their right to make the
contribution.

The source file changes were purely mechanical with:

    git ls-files | xargs sed -i -e 's/\(Tailscale Inc &\) AUTHORS/\1 contributors/g'

Updates #cleanup

Change-Id: Ia101a4a3005adb9118051b3416f5a64a4a45987d
Signed-off-by: Will Norris <will@tailscale.com>
2026-01-23 15:49:45 -08:00
Raj Singh
d451cd54a7 cmd/derper: add --acme-email flag for GCP cert mode (#18278)
GCP Certificate Manager requires an email contact on ACME accounts.
Add --acme-email flag that is required for --certmode=gcp and
optional for --certmode=letsencrypt.

Fixes #18277

Signed-off-by: Raj Singh <raj@tailscale.com>
2025-12-25 01:57:11 -05:00
Raj Singh
8eda947530 cmd/derper: add GCP Certificate Manager support (#18161)
Add --certmode=gcp for using Google Cloud Certificate Manager's
public CA instead of Let's Encrypt. GCP requires External Account
Binding (EAB) credentials for ACME registration, so this adds
--acme-eab-kid and --acme-eab-key flags.

The EAB key accepts both base64url and standard base64 encoding
to support both ACME spec format and gcloud output.

Fixes tailscale/corp#34881

Signed-off-by: Raj Singh <raj@tailscale.com>
Co-authored-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-12-10 04:51:53 +05:30
Brad Fitzpatrick
7fac0175c0 cmd/derper, derp/derphttp: support, generate self-signed IP address certs
For people who can't use LetsEncrypt because it's banned.

Per https://github.com/tailscale/tailscale/issues/11776#issuecomment-2520955317

This does two things:

1) if you run derper with --certmode=manual and --hostname=$IP_ADDRESS
   we previously permitted, but now we also:
   * auto-generate the self-signed cert for you if it doesn't yet exist on disk
   * print out the derpmap configuration you need to use that
     self-signed cert

2) teaches derp/derphttp's derp dialer to verify the signature of
   self-signed TLS certs, if so declared in the existing
   DERPNode.CertName field, which previously existed for domain fronting,
   separating out the dial hostname from how certs are validates,
   so it's not overloaded much; that's what it was meant for.

Fixes #11776

Change-Id: Ie72d12f209416bb7e8325fe0838cd2c66342c5cf
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-03-07 05:36:55 -08:00
Brad Fitzpatrick
87546a5edf cmd/derper: allow absent SNI when using manual certs and IP literal for hostname
Updates #11776

Change-Id: I81756415feb630da093833accc3074903ebd84a7
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2024-12-05 09:56:48 -08:00
Kyle Carberry
d78b334964 cmd/derper: disable http2
DERP doesn't support HTTP/2. If an HTTP/2 proxy was placed in front of
a DERP server requests would fail because the connection would
be initialized with HTTP/2, which the DERP client doesn't support.

Signed-off-by: Kyle Carberry <kyle@carberry.com>
2023-04-26 20:45:32 -07:00
Will Norris
71029cea2d all: update copyright and license headers
This updates all source files to use a new standard header for copyright
and license declaration.  Notably, copyright no longer includes a date,
and we now use the standard SPDX-License-Identifier header.

This commit was done almost entirely mechanically with perl, and then
some minimal manual fixes.

Updates #6865

Signed-off-by: Will Norris <will@tailscale.com>
2023-01-27 15:36:29 -08:00
Brad Fitzpatrick
090033ede5 cmd/derper: fix data race & server panic in manual cert mode
(Thanks for debugging, Roland!)

Fixes #4082

Change-Id: I400a64001c3c58899bb570b759b08e745abc0be1
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2022-08-10 15:14:09 -07:00
Brad Fitzpatrick
b8ad90c2bf cmd/derper: in manual cert mode, don't discard error from VerifyHostname
Updates #3701

Change-Id: If8ca5104bd8221c99cc390ca49ee3401aff09b62
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2022-01-11 08:40:42 -08:00
Silver Bullet
d8c5d00ecb cmd/derper: support manual TLS certificate mode (#2793)
Add a mode control for derp server, and add a "manual" mode
to get derp server certificate. Under manual mode, certificate
is searched in the directory given by "--cert-dir". Certificate
should in PEM format, and use "hostname.{key,crt}" as filename.
If no hostname is used, search by the hostname given for listen.

Fixes #2794

Signed-off-by: SilverBut <SilverBut@users.noreply.github.com>
2021-09-08 16:50:34 -07:00