2959 Commits (fc160f80ee22e75d1c0912e063f8752e2dbafa19)

 

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Author	SHA1	Message	Date
Brad Fitzpatrick	e299300b48	net/dnscache: cache all IPs per hostname ... Not yet used in the dialer, but plumbed around. Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	7428ecfebd	ipn/ipnlocal: populate Hostinfo.Package on Android ... Fixes tailscale/corp#2266 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	5c266bdb73	wgengine: re-set DNS config on Linux after a major link change ... Updates #2458 (maybe fixes it) Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
julianknodt	3377089583	tsweb: add float64 to logged metrics ... A previously added metric which was float64 was being ignored in tsweb, because it previously only accepted int64 and ints. It can be handled in the same way as ints. Signed-off-by: julianknodt <julianknodt@gmail.com>	3 years ago
Brad Fitzpatrick	53a2f63658	net/dns/resolver: race well-known resolvers less aggressively ... Instead of blasting away at all upstream resolvers at the same time, make a timing plan upon reconfiguration and have each upstream have an associated start delay, depending on the overall forwarding config. So now if you have two or four upstream Google or Cloudflare DNS servers (e.g. two IPv4 and two IPv6), we now usually only send a query, not four. This is especially nice on iOS where we start fewer DoH queries and thus fewer HTTP/1 requests (because we still disable HTTP/2 on iOS), fewer sockets, fewer goroutines, and fewer associated HTTP buffers, etc, saving overall memory burstiness. Fixes #2436 Updates tailscale/corp#2250 Updates tailscale/corp#2238 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	e94ec448a7	net/dns/resolver: add forwardQuery type as race work prep ... Add a place to hang state in a future change for #2436. For now this just simplifies the send signature without any functional change. Updates #2436 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	064b916b1a	net/dns/resolver: fix func used as netaddr.IP in printf ... Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Joe Tsai	d145c594ad	util/deephash: improve cycle detection (#2470) ... The previous algorithm used a map of all visited pointers. The strength of this approach is that it quickly prunes any nodes that we have ever visited before. The detriment of the approach is that pruning is heavily dependent on the order that pointers were visited. This is especially relevant for hashing a map where map entries are visited in a non-deterministic manner, which would cause the map hash to be non-deterministic (which defeats the point of a hash). This new algorithm uses a stack of all visited pointers, similar to how github.com/google/go-cmp performs cycle detection. When we visit a pointer, we push it onto the stack, and when we leave a pointer, we pop it from the stack. Before visiting a pointer, we first check whether the pointer exists anywhere in the stack. If yes, then we prune the node. The detriment of this approach is that we may hash a node more often than before since we do not prune as aggressively. The set of visited pointers up until any node is only the path of nodes up to that node and not any other pointers that may have been visited elsewhere. This provides us deterministic hashing regardless of visit order. We can now delete hashMapFallback and associated complexity, which only exists because the previous approach was non-deterministic in the presence of cycles. This fixes a failure of the old algorithm where obviously different values are treated as equal because the pruning was too aggresive. See https://github.com/tailscale/tailscale/issues/2443#issuecomment-883653534 The new algorithm is slightly slower since it prunes less aggresively: name old time/op new time/op delta Hash-8 66.1µs ± 1% 68.8µs ± 1% +4.09% (p=0.000 n=19+19) HashMapAcyclic-8 63.0µs ± 1% 62.5µs ± 1% -0.76% (p=0.000 n=18+19) TailcfgNode-8 9.79µs ± 2% 9.88µs ± 1% +0.95% (p=0.000 n=19+17) HashArray-8 643ns ± 1% 653ns ± 1% +1.64% (p=0.000 n=19+19) However, a slower but more correct algorithm seems more favorable than a faster but incorrect algorithm. Signed-off-by: Joe Tsai <joetsai@digital-static.net>	3 years ago
Brad Fitzpatrick	7b295f3d21	net/portmapper: disable UPnP on iOS for now ... Updates #2495 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	4a2c3e2a0a	control/controlclient: grow goroutine debug buffer as needed ... To not allocate 1MB up front on iOS. Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	1986d071c3	control/controlclient: don't use regexp in goroutine stack scrubbing ... To reduce binary size on iOS. Updates tailscale/corp#2238 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Christine Dodrill	60f34c70a2	tstest/integration/vms: disable rDNS for sshd on centos (#2492) ... This prevents centos tests from timing out because sshd does reverse dns lookups on every session being established instead of doing it once on the acutal ssh connection being established. This is odd. Appending this to the sshd config and restarting it seems to fix it though. Signed-off-by: Christine Dodrill <xe@tailscale.com>	3 years ago
Christine Dodrill	8db26a2261	tstest/integration/vms: disable nixos unstable (#2491) ... cloud-init broke with the upgrade to python 3.9: https://github.com/NixOS/nixpkgs/issues/131098 Signed-off-by: Christine Dodrill <xe@tailscale.com>	3 years ago
Brad Fitzpatrick	cecfc14875	net/dns: don't build init*.go on non-windows ... To remove the regexp dep on iOS, notably. Updates tailscale/corp#2238 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	2968893add	net/dns/resolver: bound DoH usage on iOS ... Updates tailscale/corp#2238 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	95a9adbb97	wgengine/netstack: implement UDP relaying to advertised subnets ... TCP was done in 662fbd4a09. This does the same for UDP. Tested by hand. Integration tests will have to come later. I'd wanted to do it in this commit, but the SOCKS5 server needed for interop testing between two userspace nodes doesn't yet support UDP and I didn't want to invent some whole new userspace packet injection interface at this point, as SOCKS seems like a better route, but that's its own bug. Fixes #2302 RELNOTE=netstack mode can now UDP relay to subnets Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	3daf27eaad	net/dns/resolver: fall back to IPv6 for well-known DoH servers if v4 fails ... Should help with IPv6-only environments when the tailnet admin only specified IPv4 DNS IPs. See https://github.com/tailscale/tailscale/issues/2447#issuecomment-884188562 Co-Author: Adrian Dewhurst <adrian@tailscale.com> Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	74eee4de1c	net/dns/resolver: use correct Cloudflare DoH hostnames ... We were using the wrong ones for the malware & adult content variants. Docs: https://developers.cloudflare.com/1.1.1.1/1.1.1.1-for-families/setup-instructions/dns-over-https Earlier commit which added them: 236eb4d04d Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Joe Tsai	d666bd8533	util/deephash: disambiguate hashing of AppendTo (#2483) ... Prepend size to AppendTo output. Fixes #2443 Signed-off-by: Joe Tsai <joetsai@digital-static.net>	3 years ago
Joe Tsai	23ad028414	util/deephash: include type as part of hash for interfaces (#2476) ... A Go interface may hold any number of different concrete types. Just because two underlying values hash to the same thing does not mean the two values are identical if they have different concrete types. As such, include the type in the hash.	3 years ago
julianknodt	3a4201e773	net/portmapper: return correct upnp port ... Previously, this was incorrectly returning the internal port, and using that with the external exposed IP when it did not use WANIPConnection2. In the case when we must provide a port, we return it instead. Noticed this while implementing the integration test for upnp. Signed-off-by: julianknodt <julianknodt@gmail.com>	3 years ago
Joe Tsai	a5fb8e0731	util/deephash: introduce deliberate instability (#2477) ... Seed the hash upon first use with the current time. This ensures that the stability of the hash is bounded within the lifetime of one program execution. Hopefully, this prevents future bugs where someone assumes that this hash is stable. Signed-off-by: Joe Tsai <joetsai@digital-static.net>	3 years ago
Brad Fitzpatrick	ecac74bb65	wgengine/netstack: fix doc comment ... Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	e4fecfe31d	wgengine/{monitor,router}: restore Linux ip rules when systemd deletes them ... Thanks. Fixes #1591 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Josh Bleecher Snyder	0aa77ba80f	tstest/integration: fix filch test flake ... Filch doesn't like having multiple processes competing for the same log files (#937). Parallel integration tests were all using the same log files. Add a TS_LOGS_DIR env var that the integration test can use to use separate log files per test. Fixes #2269 Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
Brad Fitzpatrick	ed8587f90d	wgengine/router: take a link monitor ... Prep for #1591 which will need to make Linux's router react to changes that the link monitor observes. The router package already depended on the monitor package transitively. Now it's explicit. Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Josh Bleecher Snyder	24db1a3c9b	safesocket: print full lsof command on failure ... This makes it easier to manually run the command to discover why it is failing. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
Josh Bleecher Snyder	130c5e727b	safesocket: reduce log spam while running integration tests ... Instead of logging lsof execution failures to stdout, incorporate them into the returned error. While we're here, make it clear that the file success case always returns a nil error. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
Josh Bleecher Snyder	f80193fa4c	tstest/integration: shorten test names ... The maximum unix domain socket path length on darwin is 104 bytes, including the trailing NUL. On my machine, the path created by some newly added tests (6eecf3c9) was too long, resulting in cryptic test failures. Shorten the names of the tests, and add a check to make the diagnosis easier next time. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
Joe Tsai	81cdd2f26c	Merge pull request #2464 from tailscale/dsnet/opaque-hash ... util/deephash: make hash type opaque	3 years ago
Joe Tsai	9a0c8bdd20	util/deephash: make hash type opaque ... The fact that Hash returns a [sha256.Size]byte leaks details about the underlying hash implementation. This could very well be any other hashing algorithm with a possible different block size. Abstract this implementation detail away by declaring an opaque type that is comparable. While we are changing the signature of UpdateHash, rename it to just Update to reduce stutter (e.g., deephash.Update). Signed-off-by: Joe Tsai <joetsai@digital-static.net>	3 years ago
Brad Fitzpatrick	a909d37a59	derp: rate limit how often same-key clients can kick each other off server ... Updates #392 Updates #506 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	e74d37d30f	net/dns{,/resolver}: quiet DNS output logging ... It was a huge chunk of the overall log output and made debugging difficult. Omit and summarize the spammy *.arpa parts instead. Fixes tailscale/corp#2066 (to which nobody had opinions, so)	3 years ago
Brad Fitzpatrick	b6d70203d3	ipn/ipnlocal: fix 'tailscale up' on Windows without GUI ... With this, I can now: * install Tailscale * stop the GUI * net stop Tailscale * net start Tailscale * tailscale up --unattended (where the middle three steps simulate what would happen on a Windows Server Core machine without a GUI) Fixes #2137 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	7f7a81e5ae	cmd/tailscaled: add func to create ipnserver.Opts ... To unify the Windows service and non-service/non-Windows paths a bit. And provides a way to make Linux act like Windows for testing. (notably, for testing the fix to #2137) One perhaps visible change of this is that tailscaled.exe when run in cmd.exe/powershell (not as a Windows Service) no longer uses the "_daemon" autostart key. But in addition to being naturally what falls out of this change, that's also what Windows users would likely want, as otherwise the unattended mode user is ignored when the "_daemon" autostart key is specified. Notably, this would let people debug what their normally-run-as-a-service tailscaled is doing, even when they're running in Unattended Mode. Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	87244eda3f	cmd/tailscale/cli: allow effective GOOS to be changed for integration tests ... Adds TS_DEBUG_UP_FLAG_GOOS for integration tests to make "tailscale up" act like other OSes. For an upcoming change to test #2137. Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Josh Bleecher Snyder	787939a60c	.github/workflows: add 'go generate' CI job ... Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
Josh Bleecher Snyder	84a6dcd9a9	net/dnsfallback: regenerate ... Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
Josh Bleecher Snyder	4dbbd0aa4a	cmd/addlicense: add command to add licenseheaders to generated code ... And use it to make our stringer invocations match the existing code. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
Josh Bleecher Snyder	0ec9040c5e	scripts: remove special case for _strings.go files in check license headers ... And add a license header for derp/dropreason_string.go to make it happy. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
Josh Bleecher Snyder	4b1f2ae382	tstest/integration: generate deps for all platforms in deps generator ... We have different deps depending on the platform. If we pick a privileged platform, we'll miss some deps. If we use the union of all platforms, the integration test won't compile on some platforms, because it'll import packages that don't compile on that platform. Give in to the madness and give each platform its own deps file. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
Josh Bleecher Snyder	41d06bdf86	tempfork/wireguard-windows: remove unnecessary build tag ... The _windows.go suffix suffices. This allows go:generate to run without creating a diff. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
Josh Bleecher Snyder	c179580599	wgengine/magicsock: add debug envvar to force all traffic over DERP ... This would have been useful during debugging DERP issues recently. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
Brad Fitzpatrick	e41193ec4d	wgengine/monitor: don't spam about Linux RTM_NEWRULE events ... The earlier 2ba36c294b started listening for ip rule changes and only cared about DELRULE events, buts its subscription included all rule events, including new ones, which meant we were then catching our own ip rule creations and logging about how they were unknown. Stop that log spam. Updates #1591 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	ec4d721572	cmd/tailscaled: use state key constant from ipn package ... Rather than redefining it again. Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	e2eaae8224	cmd/derpprobe: add in a delay to wait for mesh info to sync	3 years ago
Brad Fitzpatrick	2ba36c294b	wgengine/monitor: subscribe to Linux ip rule events, log on rule deletes ... For debugging & working on #1591 where certain versions of systemd-networkd delete Tailscale's ip rule entries. Updates #1591 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Avery Pennarun	14135dd935	ipn/ipnlocal: make state_test catch the bug fixed by #2445 ... Updates #2434 Signed-off-by: Avery Pennarun <apenwarr@tailscale.com>	3 years ago
Brad Fitzpatrick	6eecf3c9d1	ipn/ipnlocal: stay out of map poll when down ... Fixes #2434 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Christine Dodrill	798b0da470	tstest/integration/vms: codegen for top level tests (#2441) ... This moves the distribution definitions into a maintainable hujson file instead of just existing as constants in `distros.go`. Comments are maintained from the inline definitions. This uses jennifer[1] for hygenic source tree creation. This allows us to generate a unique top-level test for each VM run. This should hopefully help make the output of `go test` easier to read. This also separates each test out into its own top-level test so that we can better track the time that each distro takes. I really wish there was a way to have the `test_codegen.go` file _always_ run as a part of the compile process instead of having to rely on people remembering to run `go generate`, but I am limited by my tools. This will let us remove the `-distro-regex` flag and use `go test -run` to pick which distros are run. Signed-off-by: Christine Dodrill <xe@tailscale.com>	3 years ago