tailscale

Commit Graph

Author	SHA1	Message	Date
Brad Fitzpatrick	f0e2272e04	cmd/tailscale: unhide 'up --ssh' behind WIP env var Updates #3802 Change-Id: I99c550c2e4450640b0ee6ab060f178dde1360553 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	8ee044ea4a	ssh/tailssh: make the SSH server a singleton, register with LocalBackend Remove the weird netstack -> tailssh dependency and instead have tailssh register itself with ipnlocal when linked. This makes tailssh.server a singleton, so we can have a global map of all sessions. Updates #3802 Change-Id: Iad5caec3a26a33011796878ab66b8e7b49339f29 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
phirework	83c734a6e0	net/dns, util/publicdns: extract public DNS mapping into own package (#4405 ) This extracts DOH mapping of known public DNS providers in forwarder.go into its own package, to be consumed by other repos Signed-off-by: Jenny Zhang <jz@tailscale.com>	3 years ago
James Tucker	8de7f9bff7	tailscaled: no longer tune gcpercent Usage of userspace-networking is increasing, and the aggressive GC tuning causes a significant reduction in performance in that mode. Signed-off-by: James Tucker <james@tailscale.com>	3 years ago
Xe Iaso	4f1d6c53cb	cmd/nginx-auth: create new Tailscale NGINX auth service (#4400 ) This conforms to the NGINX subrequest result authentication protocol[1] using the NGINX module `ngx_http_auth_request_module`. This is based on the example that @peterkeen provided on Twitter[2], but with several changes to make things more tightly locked down: * This listens over a UNIX socket instead of a TCP socket to prevent leakage to the network * This uses systemd socket activation so that systemd owns the socket and can then lock down the service to the bare minimum required to do its job without having to worry about dropping permissions * This provides additional information in HTTP response headers that can be useful for integrating with various services * This has a script to automagically create debian and redhat packages for easier distribution This will be written about on the Tailscale blog. There is more information in README.md. [1]: https://docs.nginx.com/nginx/admin-guide/security-controls/configuring-subrequest-authentication/ [2]: https://github.com/peterkeen/tailscale/blob/main/cmd/nginx-auth-proxy/nginx-auth-proxy.go Signed-off-by: Xe Iaso <xe@tailscale.com>	3 years ago
Maisem Ali	c87ed52ad4	cmd/tailscale: add id-token subcommand RELNOTE=Initial support for getting OIDC ID Tokens Updates tailscale/corp#4347 Signed-off-by: Maisem Ali <maisem@tailscale.com>	3 years ago
Brad Fitzpatrick	3ae701f0eb	net/tsaddr, wgengine/netstack: add IPv6 range that forwards to site-relative IPv4 This defines a new magic IPv6 prefix, fd7a:115c:a1e0:b1a::/64, a subset of our existing /48, where the final 32 bits are an IPv4 address, and the middle 32 bits are a user-chosen "site ID". (which must currently be 0000:00xx; the top 3 bytes must be zero for now) e.g., I can say my home LAN's "site ID" is "0000:00bb" and then advertise its 10.2.0.0/16 IPv4 range via IPv6, like: tailscale up --advertise-routes=fd7a:115c:a1e0:b1a::bb:10.2.0.0/112 (112 being /128 minuse the /96 v6 prefix length) Then people in my tailnet can: $ curl '[fd7a:115c:a1e0:b1a::bb:10.2.0.230]' <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" .... Updates #3616, etc RELNOTE=initial support for TS IPv6 addresses to route v4 "via" specific nodes Change-Id: I9b49b6ad10410a24b5866b9fbc69d3cae1f600ef Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
David Eger	f992749b98	cmd/tailscale: Add file get --loop flag. To "automatically receive taildrop files to my Downloads directory," user currently has to run 'tailscale file get' in a loop. Make it easy to do this without shell. Updates: #2312 Signed-off-by: David Eger <david.eger@gmail.com>	3 years ago
Xiaochao Dong (@damnever)	7d97800d52	cmd/tailscale: make web mode preserve URL scheme in Synology redirect Signed-off-by: Xiaochao Dong (@damnever) <the.xcdong@gmail.com>	3 years ago
James Tucker	2550acfd9d	go.mod: bump netstack for clone reset fix (#4379 ) In tracking down issue #4144 and reading through the netstack code in detail, I discovered that the packet buf Clone path did not reset the packetbuf it was getting from the sync.Pool. The fix was sent upstream https://github.com/google/gvisor/pull/7385, and this bump pulls that in. At this time there is no known path that this fixes, however at the time of upstream submission this reset at least one field that could lead to incorrect packet routing if exercised, a situation that could therefore lead to an information leak. Signed-off-by: James Tucker <james@tailscale.com>	3 years ago
James Tucker	c6ac29bcc4	wgengine/netstack: disable refsvfs2 leak tracking (#4378 ) In addition an envknob (TS_DEBUG_NETSTACK_LEAK_MODE) now provides access to set leak tracking to more useful values. Fixes #4309 Signed-off-by: James Tucker <james@tailscale.com>	3 years ago
Xe Iaso	55161b3d92	cmd/mkpkg: use package flag (#4373 ) Also removes getopt Signed-off-by: Xe <xe@tailscale.com>	3 years ago
Xe Iaso	be861797b4	cmd/mkpkg: add name argument (#4372 ) * shell.nix: rename goimports to gotools Signed-off-by: Xe <xe@tailscale.com> * cmd/mkpkg: allow specifying description and name in flag args Signed-off-by: Xe <xe@tailscale.com>	3 years ago
oliverpool	0b273e1857	cmd/tailscale: drop special exit code 125 for gokrazy No needed since gokrazy doesn't restart successful processes anymore: https://github.com/gokrazy/gokrazy/pull/127 Signed-off-by: Olivier Charvin <git@olivier.pfad.fr>	3 years ago
Brad Fitzpatrick	5a44f9f5b5	tempfork: temporarily fork gliderlabs/ssh and x/crypto/ssh While we rearrange/upstream things. gliderlabs/ssh is forked into tempfork from our prior fork at `be8b7add40` x/crypto/ssh OTOH is forked at https://github.com/tailscale/golang-x-crypto because it was gnarlier to vendor with various internal packages, etc. Its git history shows where it starts (2c7772ba30643b7a2026cbea938420dce7c6384d). Updates #3802 Change-Id: I546e5cdf831cfc030a6c42557c0ad2c58766c65f Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	753f1bfad4	cmd/tailscale: write fewer known_hosts, resolve ssh host to FQDN early Updates #3802 Change-Id: Ic44fa2e6661a9c046e725c04fa6b8213d3d4d2b2 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	df93158aac	cmd/tailscale: generate known_hosts file for 'tailscale ssh' Updates #3802 Change-Id: I7a0052392f000ee44fc8e719f6666756aab91f3d Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	8294915780	cmd/tailscale/cli: add start of 'ssh' subcommand Updates #3802 Change-Id: Iabc07c00c7e4f43944cfe7daec8d2b66ac002289 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	06fcf3b225	cmd/tailscale: make status --peers=false work earlier + in JSON mode And return an error if you use non-flag arguments. Change-Id: I0dd6c357eb5cabd0f17020f21ba86406aea21681 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	5df12b9059	client/tailscale, cmd/tailscale, localapi: add 'tailscale nc' (actually) Adds missing file from `fc12cbfcd3`. GitHub was having issues earlier and it was all green because the checks never actually ran, but the DCO non-Actions check at least did, so "green" and I merged, not realizing it hadn't really run anything. Updates #3802 Change-Id: I29f605eebe5336f1f3ca28ebb78b092dd99d9fd8 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	fc12cbfcd3	client/tailscale, cmd/tailscale, localapi: add 'tailscale nc' This adds a "tailscale nc" command that acts a bit like "nc", but dials out via tailscaled via localapi. This is a step towards a "tailscale ssh", as we'll use "tailscale nc" as a ProxyCommand for in some cases (notably in userspace mode). But this is also just useful for debugging & scripting. Updates #3802 RELNOTE=tailscale nc Change-Id: Ia5c37af2d51dd0259d5833d80264d3ad5f68446a Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Josh Bleecher Snyder	77b4fe0afa	all: remove "no 1.18 support" failures We have worked around the issue in DERP, so the vanilla Go 1.18 toolchain now works. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
Brad Fitzpatrick	98984c1a9a	cmd/proxy-to-grafana: fix package doc code snippet Markdown isn't supported. Change-Id: I8d9bb92260c164dc277afbce624f64fc2faf5125 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Nick O'Neill	5fa502b5dc	cmd/proxy-to-grafana: use grafana's authproxy to log in tailnet users (#4208 ) Signed-off-by: Nick O'Neill <nick@tailscale.com>	3 years ago
Brad Fitzpatrick	f2041c9088	all: use strings.Cut even more Change-Id: I943ce72c6f339589235bddbe10d07799c4e37979 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Aaron Klotz	6e91f872af	net/tshttpproxy: ensure we pass the correct flags to WinHttpOpen on Win7 and Win8.0 The best flag to use on Win7 and Win8.0 is deprecated in Win8.1, so we resolve the flag depending on OS version info. Fixes https://github.com/tailscale/tailscale/issues/4201 Signed-off-by: Aaron Klotz <aaron@tailscale.com>	3 years ago
Brad Fitzpatrick	1db46919ab	cmd/tailscaled: make build fail nicely on older Go versions Due to a bug in Go (golang/go#51778), cmd/go doesn't warn about your Go version being older than the go.mod's declared Go version in that case that package loading fails before the build starts, such as when you use packages that are only in the current version of Go, like our use of net/netip. This change works around that Go bug by adding build tags and a pre-Go1.18-only file that will cause Go 1.17 and earlier to fail like: $ ~/sdk/go1.17/bin/go install ./cmd/tailscaled # tailscale.com/cmd/tailscaled ./required_version.go:11:2: undefined: you_need_Go_1_18_to_compile_Tailscale note: module requires Go 1.18 Change-Id: I39f5820de646703e19dde448dd86a7022252f75c Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Josh Bleecher Snyder	0868329936	all: use any instead of interface{} My favorite part of generics. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
Josh Bleecher Snyder	997b19545b	syncs: use TryLock and TryRLock instead of unsafe The docs say: Note that while correct uses of TryLock do exist, they are rare, and use of TryLock is often a sign of a deeper problem in a particular use of mutexes. Rare code! Or bad code! Who can tell! Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
Brad Fitzpatrick	ead16b24ec	cmd/tailscaled: fail early with nice error on macOS with go1.18 Due to golang/go#51759 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Denton Gentry	d8953bf2ba	cmd/derpprobe: don't alert for smaller failures. There is a Cosmic Background level of DERP Unreachability, with individual nodes or regions becoming unreachable briefly and returning a short time later. This is due to hosting provider outages or just the Internet sloshing about. Returning a 500 error pages a human. Being awoken at 3am for a transient error is annoying. For relatively small levels of badness don't page a human, just post to Slack. If the outage impacts a significant fraction of the DERP fleet, then page a human. Signed-off-by: Denton Gentry <dgentry@tailscale.com>	3 years ago
Josh Bleecher Snyder	8c2cb4b431	go.mod: update to latest certstore It includes a fix to allow us to use Go 1.18. We can now remove our Tailscale-only build tags. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
Brad Fitzpatrick	1f22507c06	version: use Go 1.18's git stamping as default implementation No more manual version bumps! Fixes #81 Change-Id: I3a9e544a7248f0b83bcbacbaabbc4dabc435e62d Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Josh Bleecher Snyder	26021b07ec	control/controlclient: only build certstore-related code with the Tailscale Go toolchain The certstore code is impacted by golang/go#51726. The Tailscale Go toolchain fork contains a temporary workaround, so it can compile it. Once the upstream toolchain can compile certstore, presumably in Go 1.18.1, we can revert this change. Note that depaware runs with the upstream toolchain. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
Josh Bleecher Snyder	1b57b0380d	wgengine/magicsock: remove final alloc from ReceiveFrom And now that we don't have to play escape analysis and inlining games, simplify the code. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
Josh Bleecher Snyder	71b535fc94	go.mod: require Go 1.18 Also, update depaware for Go 1.18's dependency tree. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
David Eger	5be42c0af1	cmd/tailscale: add file get options for dealing with existing files A new flag --conflict=(skip\|overwrite\|rename) lets users specify what to do when receiving files that match a same-named file in the target directory. Updates #3548 Signed-off-by: David Eger <david.eger@gmail.com>	3 years ago
Maisem Ali	da6ce27416	go.mod: move from github.com/gliderlabs/ssh to github.com/tailscale/ssh Updates #4146 Signed-off-by: Maisem Ali <maisem@tailscale.com>	3 years ago
Brad Fitzpatrick	ba1adf6c24	ssh/tailssh: make pty termios options match OpenSSH Still not sure the exact rules of how/when/who's supposed to set these, but this works for now on making them match. Baby steps. Will research more and adjust later. Updates #4146 (but not enough to fix it, something's still wrong) Updates #3802 Change-Id: I496d8cd7e31d45fe9ede88fc8894f35dc096de67 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Aaron Klotz	f8a4df66de	cmd/tailscale/cli, ipn: move exit node IP parsing and validation from cli into prefs. We need to be able to provide the ability for the GUI clients to resolve and set the exit node IP from an untrusted string, thus enabling the ability to specify that information via enterprise policy. This patch moves the relevant code out of the handler for `tailscale up`, into a method on `Prefs` that may then be called by GUI clients. We also update tests accordingly. Updates https://github.com/tailscale/corp/issues/4239 Signed-off-by: Aaron Klotz <aaron@tailscale.com>	3 years ago
Joonas Kuorilehto	c1b3500a05	cmd/tailscale: allow use of flags in gokrazy Enable use of command line arguments with tailscale cli on gokrazy. Before this change using arguments like "up" would cause tailscale cli to be repeatedly restarted by gokrazy process supervisor. We never want to have gokrazy restart tailscale cli, even if user would manually start the process. Expected usage is that user creates files: flags/tailscale.com/cmd/tailscale/flags.txt: up flags/tailscale.com/cmd/tailscaled/flags.txt: --statedir=/perm/tailscaled/ --tun=userspace-networking Then tailscale prints URL for user to log in with browser. Alternatively it should be possible to use up with auth key to allow unattended gokrazy installs. Signed-off-by: Joonas Kuorilehto <joneskoo@derbian.fi>	3 years ago
Maisem Ali	06c147d848	ssh/tailssh: create login sessions for new connections Signed-off-by: Maisem Ali <maisem@tailscale.com>	3 years ago
Brad Fitzpatrick	740e3c006c	cmd/derper: add --stun-port flag And flesh out docs on the --http-port flag. Change-Id: If9d42665f67409082081cb9a25ad74e98869337b Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Maisem Ali	0f31a0fc76	control/controlclient: add Noise client Updates #3488 Signed-off-by: Maisem Ali <maisem@tailscale.com>	3 years ago
Brad Fitzpatrick	f18bb6397b	cmd/tailscale: tell gokrazy to not manage the CLI as a daemon In the future we'll probably want to run the "tailscale web" server instead, but for now stop the infinite restart loop. See https://gokrazy.org/userguide/process-interface/ for details. Updates #1866 Change-Id: I4133a5fdb859b848813972620495865727fe397a Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	db85384f9c	cmd/tailscaled: default to userspace-networking mode on gokrazy, set paths One of the current few steps to run Tailscale on gokrazy is to specify the --tun=userspace-networking flag: https://gokrazy.org/userguide/install/tailscale/ Instead, make it the default for now. Later we can change the default to kernel mode if available and fall back to userspace mode like Synology, once #391 is done. Likewise, set default paths for Gokrazy, as its filesystem hierarchy is not the Linux standard one. Instead, use the conventional paths as documented at https://gokrazy.org/userguide/install/tailscale/. Updates #1866 RELNOTE=default to userspace-networking mode on gokrazy Change-Id: I3766159a294738597b4b30629d2860312dbb7609 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	55095df644	net/interfaces: get Linux default route from netlink as fallback If it's in a non-standard table, as it is on Unifi UDM Pro, apparently. Updates #4038 (probably fixes, but don't have hardware to verify) Change-Id: I2cb9a098d8bb07d1a97a6045b686aca31763a937 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Maisem Ali	497324ddf6	ipn/store: add common package for instantiating ipn.StateStores Also move KubeStore and MemStore into their own package. RELNOTE: tsnet now supports providing a custom ipn.StateStore. Signed-off-by: Maisem Ali <maisem@tailscale.com>	3 years ago
Dmytro Shynkevych	d9a7205be5	net/tstun: set link speed to SPEED_UNKNOWN Fixes #3933. Signed-off-by: Dmytro Shynkevych <dm.shynk@gmail.com>	3 years ago
Brad Fitzpatrick	4686224e5a	cmd/tailscaled: add a no-op test for profiling init-time memory allocs Turns out we're pretty good already at init-time work in tailscaled. The regexp/syntax shows up but it's hard to get rid of that; zstd even uses regexp. shrug Change-Id: I856aca056dcb7489f5fc22ef07f55f34ddf19bd6 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	4cbdc84d27	cmd/tailscaled/childproc: add be-child registration mechanism For ssh and maybe windows service babysitter later. Updates #3802 Change-Id: I7492b98df98971b3fb72d148ba92c2276cca491f Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	c9eca9451a	ssh: make it build on darwin For local dev testing initially. Product-wise, it'll probably only be workable on the two unsandboxed builds. Updates #3802 Change-Id: Ic352f966e7fb29aff897217d79b383131bf3f92b Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	7d897229d9	net/dns: ignore permission errors on Synology DSM7 for now Updates #4017 Change-Id: Ia7fd4df47588c010dea8e63d88f397cc8eb748e5 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	29279b34fa	cmd/tailscale: make configure-host on Synology also add CAP_NET_RAW Updates #4012 Change-Id: Ic45b5709a73b4f1cd466823e177b52d1d20ba84e Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Aaron Klotz	e31d68d64e	hostinfo: use the sentinel value set by the MSI installer to detect MSI package type The MSI installer sets a special sentinel value that we can use to detect it. I also removed the code that bails out when the installation path is not `Program Files`, as both the NSIS and MSI installers permit the user to install to a different path. Signed-off-by: Aaron Klotz <aaron@tailscale.com>	3 years ago
Maisem Ali	c7a8f0992d	ipn/ipnlocal: use views for Peer.PrimaryRoutes and Peer.Tags RELNOTE=`tailscale status --json` now shows Tags and PrimaryRoutes Signed-off-by: Maisem Ali <maisem@tailscale.com>	3 years ago
Brad Fitzpatrick	e921e1b02d	cmd/tailscale: add "tailscale debug hostinfo" subcommand Change-Id: Ifa09364d42e0516fdf80feddaf33c95880228049 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Maisem Ali	f9a50779e2	cmd/tailscaled: add `-state=mem:` to support creation of an ephemeral node. RELNOTE=`tailscaled --state=mem:` registers as an ephemeral node and does not store state to disk. Signed-off-by: Maisem Ali <maisem@tailscale.com>	3 years ago
Josh Bleecher Snyder	94409db7e2	cmd/tailscale: rewrite --authkey to --auth-key That way humans don't have to remember which is correct. RELNOTE=--auth-key is the new --authkey, but --authkey still works Updates tailscale/corp#3486 Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
Maisem Ali	72d8672ef7	tailcfg: make Node.Hostinfo a HostinfoView Signed-off-by: Maisem Ali <maisem@tailscale.com>	3 years ago
Brad Fitzpatrick	1b87e025e9	ssh/tailssh: move SSH code from wgengine/netstack to this new package Still largely incomplete, but in a better home now. Updates #3802 Change-Id: I46c5ffdeb12e306879af801b06266839157bc624 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	c988bd6ed1	net/dns/resolvconffile: unify three /etc/resolv.conf parsers into new package Change-Id: I2120893ca802d12f1bd0407d49077d3672627d33 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	8fe503057d	net/netutil: unify two oneConnListeners into a new package I was about to add a third copy, so unify them now instead. Change-Id: I3b93896aa1249b1250a6b1df4829d57717f2311a Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	a80cef0c13	cmd/derper: fix regression from bootstrap DNS optimization The commit `b9c92b90db` 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>	3 years ago
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 `60abeb027b`. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
Josh Bleecher Snyder	ec62217f52	cmd/derper: close connections once bootstrap DNS has been served Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
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>	3 years ago
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>	3 years ago
Josh Bleecher Snyder	e206a3663f	cmd/derper: add BenchmarkHandleBootstrapDNS Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
Joe Tsai	0173a50bf0	cmd/derper: add a rate limiter for accepting new connection (#3908 ) A large influx of new connections can bring down DERP since it spins off a new goroutine for each connection, where each routine may do significant amount of work (e.g., allocating memory and crunching numbers for TLS crypto). The momentary spike can cause the process to OOM. This commit sets the groundwork for limiting connections, but leaves the limit at infinite by default. Signed-off-by: Joe Tsai <joetsai@digital-static.net>	3 years ago
Aaron Klotz	3a74f2d2d7	cmd/tailscaled, util/winutil: add accessor functions for Windows system policies. This patch adds new functions to be used when accessing system policies, and revises callers to use the new functions. They first attempt the new registry path for policies, and if that fails, attempt to fall back to the legacy path. We keep non-policy variants of these functions because we should be able to retain the ability to read settings from locations that are not exposed to sysadmins for group policy edits. The remaining changes will be done in corp. Updates https://github.com/tailscale/tailscale/issues/3584 Signed-off-by: Aaron Klotz <aaron@tailscale.com>	3 years ago
Brad Fitzpatrick	3c481d6b18	cmd/tailscale: add "tailscale configure-host" to prep a Synology machine at boot Updates #3761 Change-Id: Ib5ab9a4808ade074f48d3abee22c57d7670f9e21 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	fa612c28cf	cmd/derper: make --stun default to on, flesh out flag docs Change-Id: I49e80c61ab19e78e4c8b4bc9012bb70cfe3bfa75 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
David Anderson	f5ec916214	cmd/derper: disable TLS 1.0 and 1.1. Updates tailscale/corp#3568 Signed-off-by: David Anderson <danderson@tailscale.com>	3 years ago
Brad Fitzpatrick	02bdc654d5	cmd/tailscale: fix up --reset, again Also fix a somewhat related printing bug in the process where some paths would print "Success." inconsistently even when there otherwise was no output (in the EditPrefs path) Fixes #3830 Updates #3702 (which broke it once while trying to fix it) Change-Id: Ic51e14526ad75be61ba00084670aa6a98221daa5 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	70d71ba1e7	cmd/derpprobe: check derper TLS certs too Change-Id: If8c48e012b294570ebbb1a46bacdc58fafbfbcc5 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	1af26222b6	go.mod: bump netstack, switch to upstream netstack Now that Go 1.17 has module graph pruning (https://go.dev/doc/go1.17#go-command), we should be able to use upstream netstack without breaking our private repo's build that then depends on the tailscale.com Go module. This is that experiment. Updates #1518 (the original bug to break out netstack to own module) Updates #2642 (this updates netstack, but doesn't remove workaround) Change-Id: I27a252c74a517053462e5250db09f379de8ac8ff Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
David Anderson	508f332bb2	cmd/derper: export TLS vars with derper_ prefix, not stun_ Updates tailscale/corp#3568 Signed-off-by: David Anderson <danderson@tailscale.com>	3 years ago
davideger	f31546809f	cmd/tailscale: propagate tailscaled 403s as AccessDeniedErrors So Linux/etc CLI users get helpful advice to run tailscale with --operator=$USER when they try to 'tailscale file {cp,get}' but are mysteriously forbidden. Signed-off-by: David Eger <eger@google.com> Signed-off-by: David Eger <david.eger@gmail.com>	3 years ago
Brad Fitzpatrick	f3c0023add	wgengine/netstack: add an SSH server experiment Disabled by default. To use, run tailscaled with: TS_SSH_ALLOW_LOGIN=you@bar.com And enable with: $ TAILSCALE_USE_WIP_CODE=true tailscale up --ssh=true Then ssh [any-user]@[your-tailscale-ip] for a root bash shell. (both the "root" and "bash" part are temporary) Updates #3802 Change-Id: I268f8c3c95c8eed5f3231d712a5dc89615a406f0 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	41fd4eab5c	envknob: add new package for all the strconv.ParseBool(os.Getenv(..)) A new package can also later record/report which knobs are checked and set. It also makes the code cleaner & easier to grep for env knobs. Change-Id: Id8a123ab7539f1fadbd27e0cbeac79c2e4f09751 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
David Anderson	ff3442d92d	cmd/derper: record TLS versions used for requests. Surveying the fleet prior to turning off old/unused/insecure TLS versions. Updates tailscale/corp#3615 Signed-off-by: David Anderson <danderson@tailscale.com>	3 years ago
Brad Fitzpatrick	92dfaf53bb	cmd/tailscaled: include Go runtime metrics in /debug/metrics Fixes #3772 Change-Id: I237ea23268664d99e83d27890146018b04474556 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Josh Bleecher Snyder	a076aaecc6	cmd/tailscale: use html/template for synoTokenRedirect The GitHub code scanner flagged this as a security vulnerability. I don't believe it was, but I couldn't convince myself of it 100%. Err on the safe side and use html/template to generate the HTML, with all necessary escaping. Fixes tailscale/corp#2698 Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
Maisem Ali	9e8a432146	cmd/tailscale/cli/web: fix typo where the html template data was being replaced instead of being appended to. Signed-off-by: Maisem Ali <maisem@tailscale.com>	3 years ago
Brad Fitzpatrick	e6626366a2	cmd/tailscale: let 'tailscale up --reset' do a pref edit The --reset shouldn't imply that a Backend.Start is necessary. With this, it can do a Backend.EditPrefs instead, which then doesn't do all the heavy work that Start does. Also, Start on Windows behaves slightly differently than Linux etc in some cases because of tailscaled running in client mode on Windows (where the GUI supplies the prefs). Fixes #3702 Change-Id: I75c9f08d5e0052bf623074030a3a7fcaa677abf6 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
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>	3 years ago
Brad Fitzpatrick	64c2657448	cmd/printdep: add flag to print out Go toolchain tarball URL Updates #3669 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	3690bfecb0	ipn/ipnlocal: fix cert fetching on macOS GUI platforms And clarify the directory they get written to when under the sandbox. Fixes #3667 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	c8b63a409e	cmd/hello: also redirect https://hello.ipn.dev to hello.ts.net I apparently only did HTTP before, not HTTPS. Updates tailscale/corp#1327 Change-Id: I7d5265a0a25fcab5b142c8c3f21a0920f6cae39f Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	e2d9c99e5b	cmd/hello: migrate to hello.ts.net as the hostname But still support hello.ipn.dev for a bit. Updates tailscale/corp#1327 Change-Id: Iab59cca0b260d69858af16f4e42677e54f9fe54a Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	ebdd25920e	go.toolchain.rev: add Go toolchain rev, tool to print it out Updates tailscale/corp#3385 Change-Id: Ia0e285a0ae836744539c97ff6eff207588159688 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	7d9b1de3aa	netcheck,portmapper,magicsock: ignore some UDP write errors on Linux Treat UDP send EPERM errors as a lost UDP packet, not something super fatal. That's just the Linux firewall preventing it from going out. And add a leaf package net/neterror for that (and future) policy that all three packages can share, with tests. Updates #3619 Change-Id: Ibdb838c43ee9efe70f4f25f7fc7fdf4607ba9c1d Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	96cab21383	cmd/tailscale: add debug restun, rebind subcommands In the hidden debug menu. Change-Id: I20213f1f4e2290d36f9ff561bac0cc767400d5fd Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	ae319b4636	wgengine/magicsock: add HTML debug handler to see magicsock state Change-Id: Ibc46f4e9651e1c86ec6f5d139f5e9bdc7a488415 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	3dedcd1640	logpolicy, ipn/ipnserver: connect to logtail via tailscaled when needed This is for use by the Windows GUI client to log via when an exit node is in use, so the logs don't go out via the exit node and instead go directly, like tailscaled's. The dialer tried to do that in the unprivileged GUI by binding to a specific interface, but the "Internet Kill Switch" installed by tailscaled for exit nodes precludes that from working and instead the GUI fails to dial out. So, go through tailscaled (with a CONNECT request) instead. Fixes tailscale/corp#3169 Change-Id: I17a8efdc1d4b8fed53a29d1c19995592b651b215 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	40e2b312b6	ipn/ipnserver, logpolicy: move Windows disk logging up earlier This moves the Windows-only initialization of the filelogger into logpolicy. Previously we only did it when babysitting the tailscaled subprocess, but this meant that log messages from the service itself never made it to disk. Examples that weren't logged to disk: * logtail unable to dial out, * DNS flush messages from the service * svc.ChangeRequest messages (#3581) This is basically the same fix as #3571 but staying in the Logf type, and avoiding build-tagged file (which wasn't quite a goal, but happened and seemed nice) Fixes #3570 Co-authored-by: Aaron Klotz <aaron@tailscale.com> Change-Id: Iacd80c4720b7218365ec80ae143339d030842702	3 years ago
Brad Fitzpatrick	689426d6bc	cmd/tailscaled: log Windows service change requests And add a little comment. Change-Id: If0bedf8aefd8d528149548fba829e7a9a8b2e114 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Josh Bleecher Snyder	4512e213d5	cmd/tailscale: improve ping error message when logged out Refactor out the pretty status printing code from status, use it in ping. Fixes #3549 Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
Brad Fitzpatrick	59f4f33f60	cmd/tailscaled: fix windows logtail integration I broke it in 1.17.x sometime while rewiring some logs stuff, mostly in `0653efb092` (but with a handful of logs-related changes around that time) Fixes tailscale/corp#3265 Change-Id: Icb5c07412dc6d55f1d9244c5d0b51dceca6a7e34 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago

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