14 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
Brad Fitzpatrick
3c9be07214 cmd/derper: support TXT-mediated unpublished bootstrap DNS rollouts
Updates tailscale/coral#127

Change-Id: I2712c50630d0d1272c30305fa5a1899a19ffacef
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2024-05-22 12:03:38 -07:00
Denton Gentry
e8d140654a cmd/derper: count bootstrap dns unique lookups.
Updates https://github.com/tailscale/corp/issues/13979

Signed-off-by: Denton Gentry <dgentry@tailscale.com>
2023-08-17 08:02:56 -07:00
Andrew Dunham
73fa7dd7af util/slicesx: add package for generic slice functions, use
Now that we're using rand.Shuffle in a few locations, create a generic
shuffle function and use it instead. While we're at it, move the
interleaveSlices function to the same package for use.

Signed-off-by: Andrew Dunham <andrew@du.nham.ca>
Change-Id: I0b00920e5b3eea846b6cedc30bd34d978a049fd3
2023-03-03 16:25:48 -05:00
shayne
d92ef4c215
cmd/derper: randomize IPs on refreshBootstrapDNS (#7440)
This is to address a possible DNS failure on startup. Before this
change IPv6 addresses would be listed first, and the client dialer would
fail for hosts without IPv6 connectivity.
2023-03-02 23:36:12 -05:00
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
Andrew Dunham
a0bae4dac8
cmd/derper: add support for unpublished bootstrap DNS entries (#5529)
Signed-off-by: Andrew Dunham <andrew@du.nham.ca>
2022-09-02 14:48:30 -04:00
Maisem Ali
a9f6cd41fd all: use syncs.AtomicValue
Signed-off-by: Maisem Ali <maisem@tailscale.com>
2022-08-04 11:52:16 -07:00
Brad Fitzpatrick
a80cef0c13 cmd/derper: fix regression from bootstrap DNS optimization
The commit b9c92b90db08bbcb7c726c307d2c7b2590278953 earlier today
caused a regression of serving an empty map always, as it was
JSON marshalling an atomic.Value instead of the DNS entries map
it just built.

Change-Id: I9da3eeca132c6324462dedeaa7d002908557384b
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2022-02-11 15:28:38 -08:00
Josh Bleecher Snyder
84046d6f7c Revert "cmd/derper: stop setting content header in handleBootstrapDNS"
Didn't help enough. We are setting another header anyway. Restore it.

This reverts commit 60abeb027b700e7fa40aa815da8a08383372aca7.

Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
2022-02-11 14:15:28 -08:00
Josh Bleecher Snyder
ec62217f52 cmd/derper: close connections once bootstrap DNS has been served
Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
2022-02-11 14:08:43 -08:00
Josh Bleecher Snyder
60abeb027b cmd/derper: stop setting content header in handleBootstrapDNS
No one really cares. Its cost outweighs its usefulness.

name                   old time/op    new time/op    delta
HandleBootstrapDNS-10     105ns ± 4%      65ns ± 2%   -37.68%  (p=0.000 n=15+14)

name                   old alloc/op   new alloc/op   delta
HandleBootstrapDNS-10      416B ± 0%        0B       -100.00%  (p=0.000 n=15+15)

name                   old allocs/op  new allocs/op  delta
HandleBootstrapDNS-10      3.00 ± 0%      0.00       -100.00%  (p=0.000 n=15+15)

Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
2022-02-11 12:43:19 -08:00
Josh Bleecher Snyder
b9c92b90db cmd/derper: optimize handleBootstrapDNS
Do json formatting once, rather than on every request.

Use an atomic.Value.

name                   old time/op    new time/op    delta
HandleBootstrapDNS-10    6.35µs ± 0%    0.10µs ± 4%  -98.35%  (p=0.000 n=14+15)

name                   old alloc/op   new alloc/op   delta
HandleBootstrapDNS-10    3.20kB ± 0%    0.42kB ± 0%  -86.99%  (p=0.000 n=12+15)

name                   old allocs/op  new allocs/op  delta
HandleBootstrapDNS-10      41.0 ± 0%       3.0 ± 0%  -92.68%  (p=0.000 n=15+15)

Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
2022-02-11 12:43:19 -08:00
Brad Fitzpatrick
f68431fc02 cmd/derper: add /bootstrap-dns handler
For option (d) of #1405.

For an HTTPS request of /bootstrap-dns, this returns e.g.:

{
  "log.tailscale.io": [
    "2600:1f14:436:d603:342:4c0d:2df9:191b",
    "34.210.105.16"
  ],
  "login.tailscale.com": [
    "2a05:d014:386:203:f8b4:1d5a:f163:e187",
    "3.121.18.47"
  ]
}

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-02-26 09:29:28 -08:00