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Author	SHA1	Message	Date
Brad Fitzpatrick	6b801a8e9e	cmd/derper: link to various derper docs in more places ... In hopes it'll be found more. Updates tailscale/corp#20844 Change-Id: Ic92ee9908f45b88f8770de285f838333f9467465 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	5 months ago
Flakes Updater	b3f91845dc	go.mod.sri: update SRI hash for go.mod changes ... Signed-off-by: Flakes Updater <noreply+flakes-updater@tailscale.com>	5 months ago
James Tucker	46fda6bf4c	cmd/derper: add some DERP diagnostics pointers ... A few other minor language updates. Updates tailscale/corp#20844 Change-Id: Idba85941baa0e2714688cc8a4ec3e242e7d1a362 Signed-off-by: James Tucker <james@tailscale.com>	5 months ago
Brad Fitzpatrick	9766f0e110	net/dns: move mutex before the field it guards ... And some misc doc tweaks for idiomatic Go style. Updates #cleanup Change-Id: I3ca45f78aaca037f433538b847fd6a9571a2d918 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	5 months ago
dependabot[bot]	94defc4056	build(deps): bump golang.org/x/image from 0.15.0 to 0.18.0 ... Bumps [golang.org/x/image](https://github.com/golang/image) from 0.15.0 to 0.18.0. - [Commits](https://github.com/golang/image/compare/v0.15.0...v0.18.0) --- updated-dependencies: - dependency-name: golang.org/x/image dependency-type: indirect ... Signed-off-by: dependabot[bot] <support@github.com>	5 months ago
Aaron Klotz	b292f7f9ac	util/winutil/s4u: fix incorrect token type specified in s4u Login ... This was correct before, I think I just made a copy/paste error when updating that PR. Updates #12383 Signed-off-by: Aaron Klotz <aaron@tailscale.com>	5 months ago
Aaron Klotz	5f177090e3	util/winutil: ensure domain controller address is used when retrieving remote profile information ... We cannot directly pass a flat domain name into NetUserGetInfo; we must resolve the address of a domain controller first. This PR implements the appropriate resolution mechanisms to do that, and also exposes a couple of new utility APIs for future needs. Fixes #12627 Signed-off-by: Aaron Klotz <aaron@tailscale.com>	5 months ago
Andrew Dunham	0323dd01b2	ci: enable checklocks workflow for specific packages ... This turns the checklocks workflow into a real check, and adds annotations to a few basic packages as a starting point. Updates #12625 Signed-off-by: Andrew Dunham <andrew@du.nham.ca> Change-Id: I2b0185bae05a843b5257980fc6bde732b1bdd93f	5 months ago
Andrew Dunham	8487fd2ec2	wgengine/magicsock: add more DERP home clientmetrics ... Updates tailscale/corp#18095 Signed-off-by: Andrew Dunham <andrew@du.nham.ca> Change-Id: I423adca2de0730092394bb5fd5796cd35557d352	5 months ago
Adrian Dewhurst	a6b13e6972	cmd/tailscale/cli: correct command emitted by exit node suggestion ... The exit node suggestion CLI command was written with the assumption that it's possible to provide a stableid on the command line, but this is incorrect. Instead, it will now emit the name of the exit node. Fixes #12618 Change-Id: Id7277f395b5fca090a99b0d13bfee7b215bc9802 Signed-off-by: Adrian Dewhurst <adrian@tailscale.com>	5 months ago
Naman Sood	75254178a0	ipn/ipnlocal: don't bind localListener if its context is canceled (#12621) ... The context can get canceled during backoff, and binding after that makes the listener impossible to close afterwards. Fixes #12620. Signed-off-by: Naman Sood <mail@nsood.in>	5 months ago
Anton Tolchanov	787ead835f	tsweb: accept a function to call before request handling ... To complement the existing `onCompletion` callback, which is called after request handler. Updates tailscale/corp#17075 Signed-off-by: Anton Tolchanov <anton@tailscale.com>	5 months ago
Andrea Gottardo	6e55d8f6a1	health: add warming-up warnable (#12553)	5 months ago
Andrew Dunham	30f8d8199a	ipn/ipnlocal: fix data race in tests ... We can observe a data race in tests when logging after a test is finished. `b.onHealthChange` is called in a goroutine after being registered with `health.Tracker.RegisterWatcher`, which calls callbacks in `setUnhealthyLocked` in a new goroutine. See: https://github.com/tailscale/tailscale/actions/runs/9672919302/job/26686038740 Updates #12054 Signed-off-by: Andrew Dunham <andrew@du.nham.ca> Change-Id: Ibf22cc994965d88a9e7236544878d5373f91229e	5 months ago
Aaron Klotz	da078b4c09	util/winutil: add package for logging into Windows via Service-for-User (S4U) ... This PR ties together pseudoconsoles, user profiles, s4u logons, and process creation into what is (hopefully) a simple API for various Tailscale services to obtain Windows access tokens without requiring knowledge of any Windows passwords. It works both for domain-joined machines (Kerberos) and non-domain-joined machines. The former case is fairly straightforward as it is fully documented. OTOH, the latter case is not documented, though it is fully defined in the C headers in the Windows SDK. The documentation blanks were filled in by reading the source code of Microsoft's Win32 port of OpenSSH. We need to do a bit of acrobatics to make conpty work correctly while creating a child process with an s4u token; see the doc comments above startProcessInternal for details. Updates #12383 Signed-off-by: Aaron Klotz <aaron@tailscale.com>	5 months ago
Andrew Dunham	53a5d00fff	net/dns: ensure /etc/resolv.conf is world-readable even with a umask ... Previously, if we had a umask set (e.g. 0027) that prevented creating a world-readable file, /etc/resolv.conf would be created without the o+r bit and thus other users may be unable to resolve DNS. Since a umask only applies to file creation, chmod the file after creation and before renaming it to ensure that it has the appropriate permissions. Updates #12609 Signed-off-by: Andrew Dunham <andrew@du.nham.ca> Change-Id: I2a05d64f4f3a8ee8683a70be17a7da0e70933137	5 months ago
Andrew Dunham	8161024176	wgengine/magicsock: always set home DERP if no control conn ... The logic we added in #11378 would prevent selecting a home DERP if we have no control connection. Updates tailscale/corp#18095 Signed-off-by: Andrew Dunham <andrew@du.nham.ca> Change-Id: I44bb6ac4393989444e4961b8cfa27dc149a33c6e	5 months ago
Andrew Dunham	a475c435ec	net/dns/resolver: fix test failure ... Updates #cleanup Signed-off-by: Andrew Dunham <andrew@du.nham.ca> Change-Id: I0e815a69ee44ca0ff7c0ea0ca3c6904bbf67ed1f	5 months ago
Jonathan Nobels	27033c6277	net/dns: recheck DNS config on SERVFAIL errors (#12547) ... Fixes tailscale/corp#20677 Replaces the original attempt to rectify this (by injecting a netMon event) which was both heavy handed, and missed cases where the netMon event was "minor". On apple platforms, the fetching the interface's nameservers can and does return an empty list in certain situations. Apple's API in particular is very limiting here. The header hints at notifications for dns changes which would let us react ahead of time, but it's all private APIs. To avoid remaining in the state where we end up with no nameservers but we absolutely need them, we'll react to a lack of upstream nameservers by attempting to re-query the OS. We'll rate limit this to space out the attempts. It seems relatively harmless to attempt a reconfig every 5 seconds (triggered by an incoming query) if the network is in this broken state. Missing nameservers might possibly be a persistent condition (vs a transient error), but that would also imply that something out of our control is badly misconfigured. Tested by randomly returning [] for the nameservers. When switching between Wifi networks, or cell->wifi, this will randomly trigger the bug, and we appear to reliably heal the DNS state. Signed-off-by: Jonathan Nobels <jonathan@tailscale.com>	5 months ago
Brad Fitzpatrick	d5e692f7e7	ipn/ipnlocal: check operator user via osuser package ... So non-local users (e.g. Kerberos on FreeIPA) on Linux can be looked up. Our default binaries are built with pure Go os/user which only supports the classic /etc/passwd and not any libc-hooked lookups. Updates #12601 Change-Id: I9592db89e6ca58bf972f2dcee7a35fbf44608a4f Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	5 months ago
Jordan Whited	94415e8029	cmd/stunstamp: remove sqlite DB and API (#12604) ... stunstamp now sends data to Prometheus via remote write, and Prometheus can serve the same data. Retaining and cleaning up old data in sqlite leads to long probing pauses, and it's not worth investing more effort to optimize the schema and/or concurrency model. Updates tailscale/corp#20344 Signed-off-by: Jordan Whited <jordan@tailscale.com>	5 months ago
Brad Fitzpatrick	3485e4bf5a	derp: make RunConnectionLoop funcs take Messages, support PeerPresentFlags ... PeerPresentFlags was added in 5ffb2668ef but wasn't plumbed through to the RunConnectionLoop. Rather than add yet another parameter (as IP:port was added earlier), pass in the raw PeerPresentMessage and PeerGoneMessage struct values, which are the same things, plus two fields: PeerGoneReasonType for gone and the PeerPresentFlags from 5ffb2668ef. Updates tailscale/corp#17816 Change-Id: Ib19d9f95353651ada90656071fc3656cf58b7987 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	5 months ago
Fran Bull	7eb8a77ac8	appc: don't schedule advertisement of 0 routes ... When the store-appc-routes flag is on for a tailnet we are writing the routes more often than seems necessary. Investigation reveals that we are doing so ~every time we observe a dns response, even if this causes us not to advertise any new routes. So when we have no new routes, instead do not advertise routes. Fixes #12593 Signed-off-by: Fran Bull <fran@tailscale.com>	5 months ago
Irbe Krumina	24a40f54d9	util/linuxfw: verify that IPv6 if available if (#12598) ... nftable runner for an IPv6 address gets requested. Updates tailscale/tailscale#12215 Signed-off-by: Irbe Krumina <irbe@tailscale.com>	5 months ago
Brad Fitzpatrick	d91e5c25ce	derp: redo, simplify how mesh update writes are queued/written ... I couldn't convince myself the old way was safe and couldn't lose writes. And it seemed too complicated. Updates tailscale/corp#21104 Change-Id: I17ba7c7d6fd83458a311ac671146a1f6a458a5c1 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	5 months ago
Brad Fitzpatrick	ded7734c36	derp: account for increased size of peerPresent messages in mesh updates ... sendMeshUpdates tries to write as much as possible without blocking, being careful to check the bufio.Writer.Available size before writes. Except that regressed in 6c791f7d60 which made those messages larger, which meants we were doing network I/O with the Server mutex held. Updates tailscale/corp#13945 Change-Id: Ic327071d2e37de262931b9b390cae32084811919 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	5 months ago
Andrew Dunham	200d92121f	types/lazy: add Peek method to SyncValue ... This adds the ability to "peek" at the value of a SyncValue, so that it's possible to observe a value without computing this. Updates tailscale/corp#17122 Signed-off-by: Andrew Dunham <andrew@du.nham.ca> Co-authored-by: Brad Fitzpatrick <bradfitz@tailscale.com> Change-Id: I06f88c22a1f7ffcbc7ff82946335356bb0ef4622	5 months ago
Aaron Klotz	7dd76c3411	net/netns: add Windows support for bind-to-interface-by-route ... This is implemented via GetBestInterfaceEx. Should we encounter errors or fail to resolve a valid, non-Tailscale interface, we fall back to returning the index for the default interface instead. Fixes #12551 Signed-off-by: Aaron Klotz <aaron@tailscale.com>	5 months ago
tailscale-license-updater[bot]	591979b95f	licenses: update license notices (#12414) ... Signed-off-by: License Updater <noreply+license-updater@tailscale.com> Co-authored-by: License Updater <noreply+license-updater@tailscale.com>	5 months ago
Brad Fitzpatrick	91786ff958	cmd/derper: add debug endpoint to adjust mutex profiling rate ... Updates #3560 Change-Id: I474421ce75c79fb66e1c306ed47daebc5a0e069e Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	5 months ago
Brad Fitzpatrick	5ffb2668ef	derp: add PeerPresentFlags bitmask to Watch messages ... Updates tailscale/corp#17816 Change-Id: Ib5baf6c981a6a4c279f8bbfef02048cfbfb3323b Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	5 months ago
Aaron Klotz	d7a4f9d31c	net/dns: ensure multiple hosts with the same IP address are combined into a single HostEntry ... This ensures that each line has a unique IP address. Fixes #11939 Signed-off-by: Aaron Klotz <aaron@tailscale.com>	5 months ago
Jordan Whited	0d6e71df70	cmd/stunstamp: add explicit metric to track timeout events (#12564) ... Timeouts could already be identified as NaN values on stunstamp_derp_stun_rtt_ns, but we can't use NaN effectively with promql to visualize them. So, this commit adds a timeouts metric that we can use with rate/delta/etc promql functions. Updates tailscale/corp#20689 Signed-off-by: Jordan Whited <jordan@tailscale.com>	5 months ago
Kristoffer Dalby	dcb0f189cc	cmd/proxy-to-grafana: add flag for alternative control server ... Fixes #12571 Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>	5 months ago
Brad Fitzpatrick	5ec01bf3ce	wgengine/filter: support FilterRules matching on srcIP node caps [capver 100] ... See #12542 for background. Updates #12542 Change-Id: Ida312f700affc00d17681dc7551ee9672eeb1789 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	5 months ago
Irbe Krumina	07063bc5c7	ssh/tailssh: fix integration test (#12562) ... Updates#cleanup Signed-off-by: Irbe Krumina <irbe@tailscale.com>	5 months ago
Brad Fitzpatrick	fd3efd9bad	control/controlclient: add more Screen Time blocking detection ... Updates #9658 Updates #12545 Change-Id: Iec1dad354a75f145567b4055d77b1c1db27c89e2 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com> Co-authored-by: Andrea Gottardo <andrea@gottardo.me>	5 months ago
Keli	bd50a3457d	wgengine/filter: add "Accept" TCP log lines to verbose logging (#12525) ... Changes "Accept" TCP logs to display in verbose logs only, and removes lines from default logging behavior. Updates #12158 Signed-off-by: Keli Velazquez <keli@tailscale.com>	5 months ago
Percy Wegmann	730f0368d0	ssh/tailssh: replace incubator process with su instead of running su as child ... This allows the SSH_AUTH_SOCK environment variable to work inside of su and agent forwarding to succeed. Fixes #12467 Signed-off-by: Percy Wegmann <percy@tailscale.com>	5 months ago
Andrew Dunham	24976b5bfd	cmd/tailscale/cli: actually perform Noise request in 'debug ts2021' ... This actually performs a Noise request in the 'debug ts2021' command, instead of just exiting once we've dialed a connection. This can help debug certain forms of captive portals and deep packet inspection that will allow a connection, but will RST the connection when trying to send data on the post-upgraded TCP connection. Updates #1634 Signed-off-by: Andrew Dunham <andrew@du.nham.ca> Change-Id: I1e46ca9c9a0751c55f16373a6a76cdc24fec1f18	5 months ago
Andrew Dunham	732605f961	control/controlclient: move noiseConn to internal package ... So that it can be later used in the 'tailscale debug ts2021' function in the CLI, to aid in debugging captive portals/WAFs/etc. Updates #1634 Signed-off-by: Andrew Dunham <andrew@du.nham.ca> Change-Id: Iec9423f5e7570f2c2c8218d27fc0902137e73909	5 months ago
Brad Fitzpatrick	0004827681	control/controlhttp: add health warning for macOS filtering blocking Tailscale (#12546) ... Updates #9658 Updates #12545 Change-Id: I6612b9b65eb193a1a651e219b5198c7c20ed94e1 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com> Co-authored-by: Andrea Gottardo <andrea@tailscale.com>	5 months ago
Brad Fitzpatrick	1023b2a82c	util/deephash: fix test regression on 32-bit ... Fix regression from bd93c3067e where I didn't notice the 32-bit test failure was real and not its usual slowness-related regression. Yay failure blindness. Updates #12526 Change-Id: I00e33bba697e2cdb61a0d76a71b62406f6c2eeb9 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	5 months ago
Andrea Gottardo	d7619d273b	health: fix nil DERPMap dereference panic ... Looks like a DERPmap might not be available when we try to get the name associated with a region ID, and that was causing an intermittent panic in CI. Fixes #12534 Change-Id: I4ace53681bf004df46c728cff830b27339254243 Signed-off-by: Andrea Gottardo <andrea@gottardo.me>	5 months ago
Brad Fitzpatrick	25eeafde23	derp: don't verify mesh peers when --verify-clients is set ... Updates tailscale/corp#20654 Change-Id: I33c7ca3c7a3c4e492797b73c66eefb699376402c Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	5 months ago
Brad Fitzpatrick	4b39b6f7ce	derp: fix fmt verb for nodekeys ... It was hex-ifying the String() form of key.NodePublic, which was already hex. I noticed in some logs: "client 6e6f64656b65793a353537353..." And thought that 6x6x6x6x looked strange. It's "nodekey:" in hex. Updates tailscale/corp#20844 Change-Id: Ib9f2d63b37e324420b86efaa680668a9b807e465 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	5 months ago
Brad Fitzpatrick	21460a5b14	tailcfg, wgengine/filter: remove most FilterRule.SrcBits code ... The control plane hasn't sent it to clients in ages. Updates tailscale/corp#20965 Change-Id: I1d71a4b6dd3f75010a05c544ee39827837c30772 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	5 months ago
Brad Fitzpatrick	162d593514	net/flowtrack: fix, test String method ... I meant to do this in the earlier change and had a git fail. To atone, add a test too while I'm here. Updates #12486 Updates #12507 Change-Id: I4943b454a2530cb5047636f37136aa2898d2ffc7 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	5 months ago
Brad Fitzpatrick	9e0a5cc551	net/flowtrack: optimize Tuple type for use as map key ... This gets UDP filter overhead closer to TCP. Still ~2x, but no longer ~3x. goos: darwin goarch: arm64 pkg: tailscale.com/wgengine/filter │ before │ after │ │ sec/op │ sec/op vs base │ FilterMatch/tcp-not-syn-v4-8 15.43n ± 3% 15.38n ± 5% ~ (p=0.339 n=10) FilterMatch/udp-existing-flow-v4-8 42.45n ± 0% 34.77n ± 1% -18.08% (p=0.000 n=10) geomean 25.59n 23.12n -9.65% Updates #12486 Change-Id: I595cfadcc6b7234604bed9c4dd4261e087c0d4c4 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	5 months ago
Andrea Gottardo	d6a8fb20e7	health: include DERP region name in bad derp notifications (#12530) ... Fixes tailscale/corp#20971 We added some Warnables for DERP failure situations, but their Text currently spits out the DERP region ID ("10") in the UI, which is super ugly. It would be better to provide the RegionName of the DERP region that is failing. We can do so by storing a reference to the last-known DERP map in the health package whenever we fetch one, and using it when generating the notification text. This way, the following message... > Tailscale could not connect to the relay server '10'. The server might be temporarily unavailable, or your Internet connection might be down. becomes: > Tailscale could not connect to the 'Seattle' relay server. The server might be temporarily unavailable, or your Internet connection might be down. which is a lot more user-friendly. Signed-off-by: Andrea Gottardo <andrea@gottardo.me>	5 months ago