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2026-01-23all: remove AUTHORS file and references to itWill Norris136-137/+137
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>
2026-01-08feature/featuretags: make QR codes modular (#18358)Simon Law2-0/+26
QR codes are used by `tailscale up --qr` to provide an easy way to open a web-page without transcribing a difficult URI. However, there’s no need for this feature if the client will never be called interactively. So this PR adds the `ts_omit_qrcodes` build tag. Updates #18182 Signed-off-by: Simon Law <sfllaw@tailscale.com>
2025-11-18feature/featuretags: add CacheNetMap feature tag for upcoming workBrad Fitzpatrick2-0/+26
(trying to get in smaller obvious chunks ahead of later PRs to make them smaller) Updates #17925 Change-Id: I184002001055790484e4792af8ffe2a9a2465b2e Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-11-18feature/buildfeatures: re-run go generateBrad Fitzpatrick2-6/+6
6a73c0bdf55 added a feature tag but didn't re-run go generate on ./feature/buildfeatures. Updates #9192 Change-Id: I7819450453e6b34c60cad29d2273e3e118291643 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-10-17cmd/tailscale/cli,feature: add support for identity federation (#17529)Max Coulombe2-0/+26
Add new arguments to `tailscale up` so authkeys can be generated dynamically via identity federation. Updates #9192 Signed-off-by: mcoulombe <max@tailscale.com>
2025-10-16wgengine/netlog: merge connstats into package (#17557)Joe Tsai2-26/+0
Merge the connstats package into the netlog package and unexport all of its declarations. Remove the buildfeatures.HasConnStats and use HasNetLog instead. Updates tailscale/corp#33352 Signed-off-by: Joe Tsai <joetsai@digital-static.net>
2025-10-07feature/linkspeed: move cosmetic tstun netlink code out to modular featureBrad Fitzpatrick2-0/+26
Part of making all netlink monitoring code optional. Updates #17311 (how I got started down this path) Updates #12614 Change-Id: Ic80d8a7a44dc261c4b8678b3c2241c3b3778370d Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-10-06feature/featuretags: make usermetrics modularBrad Fitzpatrick2-0/+26
Saves ~102 KB from the min build. Updates #12614 Change-Id: Ie1d4f439321267b9f98046593cb289ee3c4d6249 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-10-06feature/featuretags: add LazyWG modular featureBrad Fitzpatrick2-0/+26
Due to iOS memory limitations in 2020 (see https://tailscale.com/blog/go-linker, etc) and wireguard-go using multiple goroutines per peer, commit 16a9cfe2f4ce7d introduced some convoluted pathsways through Tailscale to look at packets before they're delivered to wireguard-go and lazily reconfigure wireguard on the fly before delivering a packet, only telling wireguard about peers that are active. We eventually want to remove that code and integrate wireguard-go's configuration with Tailscale's existing netmap tracking. To make it easier to find that code later, this makes it modular. It saves 12 KB (of disk) to turn it off (at the expense of lots of RAM), but that's not really the point. The point is rather making it obvious (via the new constants) where this code even is. Updates #12614 Change-Id: I113b040f3e35f7d861c457eaa710d35f47cee1cb Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-10-04net/connstats: make it modular (omittable)Brad Fitzpatrick2-0/+26
Saves only 12 KB, but notably removes some deps on packages that future changes can then eliminate entirely. Updates #12614 Change-Id: Ibf830d3ee08f621d0a2011b1d4cd175427ef50df Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-10-03feature/ace: make ACE modularBrad Fitzpatrick2-0/+26
Updates #12614 Change-Id: Iaee75d8831c4ba5c9705d7877bb78044424c6da1 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-10-03health: make it omittableBrad Fitzpatrick2-0/+26
Saves 86 KB. And stop depending on expvar and usermetrics when disabled, in prep to removing all the expvar/metrics/tsweb stuff. Updates #12614 Change-Id: I35d2479ddd1d39b615bab32b1fa940ae8cbf9b11 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-10-02feature/featuretags: add features for c2n, peerapi, advertise/use ↵Brad Fitzpatrick14-0/+182
routes/exit nodes Saves 262 KB so far. I'm sure I missed some places, but shotizam says these were the low hanging fruit. Updates #12614 Change-Id: Ia31c01b454f627e6d0470229aae4e19d615e45e3 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-10-02feature/featuretags: make clientmetrics optionalBrad Fitzpatrick2-0/+26
Saves 57 KB Updates #12614 Change-Id: If7eebec12b3cb30ae6264171d36a258c04b05a70 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-10-02feature/featuretags, all: add build features, use existing ones in more placesBrad Fitzpatrick8-0/+104
Saves 270 KB. Updates #12614 Change-Id: I4c3fe06d32c49edb3a4bb0758a8617d83f291cf5 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-09-30feature/featuretags, ipn/conffile: make HuJSON support in config files optionalBrad Fitzpatrick2-0/+26
Saves 33 KB. Updates #12614 Change-Id: Ie701c230e0765281f409f29ed263910b9be9cc77 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-09-30feature/appconnectors: start making it modularBrad Fitzpatrick2-0/+26
Saves 45 KB. Updates #12614 Change-Id: Iaeb73e69633878ce0a0f58c986024784bbe218f1 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-09-30feature/featuretags: add a catch-all "Debug" feature flagBrad Fitzpatrick2-0/+26
Saves 168 KB. Updates #12614 Change-Id: Iaab3ae3efc6ddc7da39629ef13e5ec44976952ba Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-09-30feature, net/tshttpproxy: pull out support for using proxies as a featureBrad Fitzpatrick6-2/+54
Saves 139 KB. Also Synology support, which I saw had its own large-ish proxy parsing support on Linux, but support for proxies without Synology proxy support is reasonable, so I pulled that out as its own thing. Updates #12614 Change-Id: I22de285a3def7be77fdcf23e2bec7c83c9655593 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-09-30feature/featuretags: add option to turn off DNSBrad Fitzpatrick2-0/+26
Saves 328 KB (2.5%) off the minimal binary. For IoT devices that don't need MagicDNS (e.g. they don't make outbound connections), this provides a knob to disable all the DNS functionality. Rather than a massive refactor today, this uses constant false values as a deadcode sledgehammer, guided by shotizam to find the largest DNS functions which survived deadcode. A future refactor could make it so that the net/dns/resolver and publicdns packages don't even show up in the import graph (along with their imports) but really it's already pretty good looking with just these consts, so it's not at the top of my list to refactor it more soon. Also do the same in a few places with the ACME (cert) functionality, as I saw those while searching for DNS stuff. Updates #12614 Change-Id: I8e459f595c2fde68ca16503ff61c8ab339871f97 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-09-29ipn/ipnlocal, feature/posture: pull posture out into a modular featureBrad Fitzpatrick2-0/+26
Updates #12614 Change-Id: I9d08a1330b9c55e1a23e7979a707e11d8e090d79 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-09-29feature/clientupdate: move clientupdate to a modular feature, disabled for tsnetBrad Fitzpatrick2-0/+26
Updates #12614 Change-Id: I5f685dec84a5396b7c2b66f2788ae3d286e1ddc6 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-09-29wgengine/router{,/osrouter}: split OS router implementations into subpackageBrad Fitzpatrick2-0/+26
So wgengine/router is just the docs + entrypoint + types, and then underscore importing wgengine/router/osrouter registers the constructors with the wgengine/router package. Then tsnet can not pull those in. Updates #17313 Change-Id: If313226f6987d709ea9193c8f16a909326ceefe7 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-09-29feature/sdnotify: move util/systemd to a modular featureBrad Fitzpatrick2-0/+26
Updates #12614 Change-Id: I08e714c83b455df7f538cc99cafe940db936b480 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-09-29feature/featuretags: make CLI connection error diagnostics modularBrad Fitzpatrick2-0/+26
Updates #12614 Change-Id: I09b8944166ee00910b402bcd5725cd7969e2c82c Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-09-29feature/logtail: pull logtail + netlog out to modular featuresBrad Fitzpatrick4-0/+52
Removes 434 KB from the minimal Linux binary, or ~3%. Primarily this comes from not linking in the zstd encoding code. Fixes #17323 Change-Id: I0a90de307dfa1ad7422db7aa8b1b46c782bfaaf7 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-09-27util/linuxfw, feature/buildfeatures: add ts_omit_iptables to make IPTables ↵Brad Fitzpatrick2-0/+26
optional Updates #12614 Change-Id: Ic0eba982aa8468a55c63e1b763345f032a55b4e2 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-09-26doctor: add ts_omit_doctor supportBrad Fitzpatrick2-0/+26
Updates #12614 Change-Id: I84c166c4b99ca75d70abe4087e5ff3f7d90d4bcc Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-09-26ipn/ipnlocal: move last unconditional gvisor import, complete ↵Brad Fitzpatrick2-2/+2
ts_omit_netstack support Fixes #17283 Change-Id: Ia84d269683e4a68d7d10562561204934eeaf53bb Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-09-26wgengine/netstack/gro: permit building without GROBrad Fitzpatrick2-0/+26
This only saves ~32KB in the minimal linux/amd64 binary, but it's a step towards permitting not depending on gvisor for small builds. Updates #17283 Change-Id: Iae8da5e9465127de354dbcaf25e794a6832d891b Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-09-25feature/portlist: pull portlist service porting into extension, use eventbusBrad Fitzpatrick2-0/+26
And yay: tsnet (and thus k8s-operator etc) no longer depends on portlist! And LocalBackend is smaller. Removes 50 KB from the minimal binary. Updates #12614 Change-Id: Iee04057053dc39305303e8bd1d9599db8368d926 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-09-24net/dns, feature/featuretags: make NetworkManager, systemd-resolved, and ↵Brad Fitzpatrick6-0/+78
DBus modular Saves 360 KB (19951800 => 19591352 on linux/amd64 --extra-small --box binary) Updates #12614 Updates #17206 Change-Id: Iafd5b2536dd735111b447546cba335a7a64379ed Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-09-24feature/featuretags: add build tag to remove captive portal detectionBrad Fitzpatrick2-0/+26
This doesn't yet fully pull it out into a feature/captiveportal package. This is the usual first step, moving the code to its own files within the same packages. Updates #17254 Change-Id: Idfaec839debf7c96f51ca6520ce36ccf2f8eec92 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-09-19feature/linuxdnsfight: move inotify watching of /etc/resolv.conf out to a ↵Brad Fitzpatrick2-0/+26
feature tsnet apps in particular never use the Linux DNS OSManagers, so they don't need DBus, etc. I started to pull that all out into separate features so tsnet doesn't need to bring in DBus, but hit this first. Here you can see that tsnet (and the k8s-operator) no longer pulls in inotify. Updates #17206 Change-Id: I7af0f391f60c5e7dbeed7a080346f83262346591 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-09-19cmd/tailscaled: make the outbound HTTP/SOCKS5 proxy modularBrad Fitzpatrick4-0/+52
Updates #12614 Change-Id: Icba6f1c0838dce6ee13aa2dc662fb551813262e4 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-09-19tsnet,internal/client/tailscale: resolve OAuth into authkeys in tsnet (#17191)Naman Sood2-0/+26
* tsnet,internal/client/tailscale: resolve OAuth into authkeys in tsnet Updates #8403. * internal/client/tailscale: omit OAuth library via build tag Updates #12614. Signed-off-by: Naman Sood <mail@nsood.in>
2025-09-16feature/featuretags, all: add ts_omit_acme to disable TLS cert supportBrad Fitzpatrick2-0/+26
I'd started to do this in the earlier ts_omit_server PR but decided to split it into this separate PR. Updates #17128 Change-Id: Ief8823a78d1f7bbb79e64a5cab30a7d0a5d6ff4b Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-09-16feature/portmapper: make the portmapper & its debugging tools modularBrad Fitzpatrick4-0/+52
Starting at a minimal binary and adding one feature back... tailscaled tailscale combined (linux/amd64) 30073135 17451704 31543692 omitting everything + 480302 + 10258 + 493896 .. add debugportmapper + 475317 + 151943 + 467660 .. add portmapper + 500086 + 162873 + 510511 .. add portmapper+debugportmapper Fixes #17148 Change-Id: I90bd0e9d1bd8cbe64fa2e885e9afef8fb5ee74b1 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-09-15feature/buildfeatures: split const bools out of the featuretags package, add ↵Brad Fitzpatrick40-0/+553
Has prefix This renames the package+symbols in the earlier 17ffa8013835d4 to be in their own package ("buildfeatures") and start with the word "Has" like "if buildfeatures.HasFoo {". Updates #12614 Change-Id: I510e5f65993e5b76a0e163e3aa4543755213cbf6 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
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