tailscale

Commit Graph

Author	SHA1	Message	Date
Brad Fitzpatrick	67e5fabdbd	hostinfo, ipn/ipnlocal: add SetPackage, remove ipnlocal hacks Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	81269fad28	hostinfo: add SetOSVersion like SetDeviceModel, deprecate ipn.Prefs way Turns out the iOS client has been only sending the OS version it first started at. This whole hostinfo-via-prefs mechanism was never a good idea. Start removing it. Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	22a1a5d7cf	ipn/ipnlocal: for IPv6-only nodes, publish IPv6 MagicDNS records of peers See https://github.com/tailscale/tailscale/issues/2970#issuecomment-931885268 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	6d43cbc325	ipn/ipnlocal: make sure mobile clients don't use the old control server URL The new frontends are better for battery. Updates #2442 Updates tailscale/corp#2750 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	173bbaa1a1	all: disable TCP keep-alives on iOS/Android Updates #2442 Updates tailscale/corp#2750 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	3b3994f0db	ipn{,/localapi,ipnlocal}: infer cert dir from state file location This fixes "tailscale cert" on Synology where the var directory is typically like /volume2/@appdata/Tailscale, or any other tailscaled user who specifies a non-standard state file location. This is a interim fix on the way to #2932. Fixes #2927 Updates #2932 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	3a72ebb109	ipn: test TestFileStore in a fresh subdirectory Fixes #2923 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Aaron Klotz	21e9f98fc1	ipn, paths: unconditionally attempt to set state dir perms, but only if the state dir is ours We unconditionally set appropriate perms on the statefile dir. We look at the basename of the statefile dir, and if it is "tailscale", then we set perms as appropriate. Fixes #2925 Updates #2856 Signed-off-by: Aaron Klotz <aaron@tailscale.com>	3 years ago
Brad Fitzpatrick	efb84ca60d	ipn/localapi, cmd/tailscale: add CPU & memory profile support, debug command This was already possible on Linux if you ran tailscaled with --debug (which runs net/http/pprof), but it requires the user have the Go toolchain around. Also, it wasn't possible on macOS, as there's no way to run the IPNExtension with a debug server (it doesn't run tailscaled). And on Windows it's super tedious: beyond what users want to do or what we want to explain. Instead, put it in "tailscale debug" so it works and works the same on all platforms. Then we can ask users to run it when we're debugging something and they can email us the output files. Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
David Anderson	1eabb5b2d9	ipn: don't log IPN messages that may contain an authkey. Signed-off-by: David Anderson <danderson@tailscale.com>	3 years ago
Aaron Klotz	9ebb5d4205	ipn, paths: ensure that the state directory for Windows has the correct perms ProgramData has a permissive ACL. For us to safely store machine-wide state information, we must set a more restrictive ACL on our state directory. We set the ACL so that only talescaled's user (ie, LocalSystem) and the Administrators group may access our directory. We must include Administrators to ensure that logs continue to be easily accessible; omitting that group would force users to use special tools to log in interactively as LocalSystem, which is not ideal. (Note that the ACL we apply matches the ACL that was used for LocalSystem's AppData\Local). There are two cases where we need to reset perms: One is during migration from the old location to the new. The second case is for clean installations where we are creating the file store for the first time. Updates #2856 Signed-off-by: Aaron Klotz <aaron@tailscale.com>	3 years ago
Brad Fitzpatrick	7d8227e7a6	logpolicy: don't use C:\ProgramData use for tailscale-ipn GUI's log dir tailscale-ipn.exe (the GUI) shouldn't use C:\ProgramData. Also, migrate the earlier misnamed wg32/wg64 conf files if they're present. (That was stopped in `2db877caa3`, but the files exist from fresh 1.14 installs) Updates #2856 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Denton Gentry	280c84e46a	ipn/ipnserver, paths, logpolicy: move Window config files out of %LocalAppData% C:\WINDOWS\system32\config\systemprofile\AppData\Local\ is frequently cleared for almost any reason: Windows updates, System Restore, even various System Cleaner utilities. The server-state.conf file in AppData\Local could be deleted at any time, which would break login until the node is removed from the Admin Panel allowing it to create a new key. Carefully copy any AppData state to ProgramData at startup. If copying the state fails, continue to use AppData so at least there will be connectivity. If there is no state, use ProgramData. We also migrate the log.conf file. Very old versions of Tailscale named the EXE tailscale-ipn, so the log conf was tailscale-ipn.log.conf and more recent versions preserved this filename and cmdName in logs. In this migration we always update the filename to c:\ProgramData\Tailscale\tailscaled.log.conf Updates https://github.com/tailscale/tailscale/issues/2856 Signed-off-by: Denton Gentry <dgentry@tailscale.com>	3 years ago
Brad Fitzpatrick	aae622314e	tailcfg, health: add way for control plane to add problems to health check So if the control plane knows that something's broken about the node, it can include problem(s) in MapResponse and "tailscale status" will show it. (and GUIs in the future, as it's in ipnstate.Status/JSON) This also bumps the MapRequest.Version, though it's not strictly required. Doesn't hurt. Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Josh Bleecher Snyder	d5ab18b2e6	cmd/cloner: add Clone context to regen struct assignments Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
Josh Bleecher Snyder	07c09f470d	ipn/ipnlocal: do not shut down the backend halfway through TestStateMachine LocalBackend.Shutdown's docs say: > The backend can no longer be used after Shutdown returns. Nevertheless, TestStateMachine blithely calls Shutdown, talks some smack, and continues on, expecting things to work. Other uses of Shutdown in the codebase are as intended. Things mostly kinda work anyway, except that the wgengine.Engine has been shut down, so calls to Reconfig fail. Those get logged: > local.go:603: wgengine status error: engine closing; no status but otherwise ignored. However, the Reconfig failure caused one fewer call to pause/unpause than normal. Now the assertCalls lines match the equivalent ones earlier in the test. I don't see an obvious correct replacement for Shutdown in the context of this test; I'm not sure entirely what it is trying to accomplish. It is possible that many of the tests remaining after the prior call to Shutdown are now extraneous. They don't harm anything, though, so err on the side of safety and leave them for now. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
Josh Bleecher Snyder	f834a4ade5	ipn/ipnlocal: fix minor typo in comment Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
Josh Bleecher Snyder	221cc5f8f2	ipn/ipnlocal: reduce line noise in tests Use helpers and variadic functions to make the call sites a lot easier to read, since they occur a lot. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
Josh Bleecher Snyder	45d3174c0d	ipn/ipnlocal: add LocalBackend.broadcastStatusChanged To reduce repetition. Also, document why we acquire the lock. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
Josh Bleecher Snyder	b7ede14396	Revert "ipn/ipnlocal: remove locks around sync.Cond.Broadcast call" Reason for revert: Causes ipnlocal tests to deadlock intermittently. This reverts commit `1b15349e01`. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
Josh Bleecher Snyder	3ea8cf9c62	ipn/ipnlocal: use quicktest.IsNotNil in tests This didn't exist when the test was written. Now it does (frankban/quicktest#94); use it. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
Josh Bleecher Snyder	1b15349e01	ipn/ipnlocal: remove locks around sync.Cond.Broadcast call They are unnecessary. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
Josh Bleecher Snyder	3b58c118dd	ipn/ipnlocal: inline LocalBackend.getEngineStatus For uniformity. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
Josh Bleecher Snyder	0f4c0e558b	ipn/ipnlocal: use a switch statement instead of an else-if chain For clarity. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
Josh Bleecher Snyder	7421ba91ec	ipn/ipnlocal: only call UpdateEndpoints when the endpoints change Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
Josh Bleecher Snyder	b681edc572	ipn/ipnlocal: add failing test Concurrent calls to LocalBackend.setWgengineStatus could result in some of the status updates being dropped. This was exacerbated by `92077ae78c`, which increases the probability of concurrent status updates, causing test failures (tailscale/corp#2579). It's going to take a bit of work to fix this test. The ipnlocal state machine is difficult to reason about, particularly in the face of concurrency. We could fix the test trivially by throwing a new mutex around setWgengineStatus to serialize calls to it, but I'd like to at least try to do better than cosmetics. In the meantime, commit the test. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
Josh Bleecher Snyder	7693d36aed	all: close fake userspace engines when tests complete We were leaking FDs. In a few places, switch from defer to t.Cleanup. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
Josh Bleecher Snyder	4bbf5a8636	cmd/cloner: reduce diff noise when changing command Spelling out the command to run for every type means that changing the command makes for a large, repetitive diff. Stop doing that. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
Brad Fitzpatrick	640134421e	all: update tests to use tstest.MemLogger And give MemLogger a mutex, as one caller had, which does match the logf contract better. Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	48933b0382	ipn/ipnlocal: flesh out the dnsConfigForNetmap tests Follow-up to #2805 and #2806 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	7fe6ecf165	ipn/ipnlocal: add MagicDNS records for IPv6-only nodes Updates #2268 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	90b0cd0c51	ipn/ipnlocal: start adding some netmap to DNS config tests Follow-up to #2805 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	30a614f9b9	ipn/ipnlocal: return early, outdent a bunch in dnsConfigForNetmap Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	2bb0eb5f7e	ipn/ipnlocal: pull out dns.Config construction to its own func In prep for other bug fixes & tests. It's hard to test when it was intermingled into LocalBackend.authReconfig. Now it's a pure function. And rename variable 'uc' (user config?) to the since idiomatic 'prefs'. Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
David Crawshaw	9502b515f1	net/dns: replace resolver IPs with type for DoH We currently plumb full URLs for DNS resolvers from the control server down to the client. But when we pass the values into the net/dns package, we throw away any URL that isn't a bare IP. This commit continues the plumbing, and gets the URL all the way to the built in forwarder. (It stops before plumbing URLs into the OS configurations that can handle them.) For #2596 Signed-off-by: David Crawshaw <crawshaw@tailscale.com>	3 years ago
Brad Fitzpatrick	7bfd4f521d	cmd/tailscale: fix "tailscale ip $self-host-hostname" And in the process, fix the related confusing error messages from pinging your own IP or hostname. Fixes #2803 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Dave Anderson	980acc38ba	types/key: add a special key with custom serialization for control private keys (#2792 ) * Revert "Revert "types/key: add MachinePrivate and MachinePublic."" This reverts commit `61c3b98a24`. Signed-off-by: David Anderson <danderson@tailscale.com> * types/key: add ControlPrivate, with custom serialization. ControlPrivate is just a MachinePrivate that serializes differently in JSON, to be compatible with how the Tailscale control plane historically serialized its private key. Signed-off-by: David Anderson <danderson@tailscale.com>	3 years ago
David Anderson	61c3b98a24	Revert "types/key: add MachinePrivate and MachinePublic." Broke the tailscale control plane due to surprise different serialization. This reverts commit `4fdb88efe1`.	3 years ago
David Anderson	4fdb88efe1	types/key: add MachinePrivate and MachinePublic. Plumb throughout the codebase as a replacement for the mixed use of tailcfg.MachineKey and wgkey.Private/Public. Signed-off-by: David Anderson <danderson@tailscale.com>	3 years ago
Brad Fitzpatrick	5bacbf3744	wgengine/magicsock, health, ipn/ipnstate: track DERP-advertised health And add health check errors to ipnstate.Status (tailscale status --json). Updates #2746 Updates #2775 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Maisem Ali	0842e2f45b	ipn/store: add ability to store data as k8s secrets. Signed-off-by: Maisem Ali <maisem@tailscale.com>	3 years ago
Brad Fitzpatrick	88bd796622	tailcfg,ipn/ipnlocal: support DNSConfig.Routes with empty values [mapver 23] Fixes #2706 Updates #1235 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Matt Drollette	c1aa5a2e33	ipn/ipnlocal: update requested tags in host info Fixes #2641 Signed-off-by: Matt Drollette <matt@drollette.com>	3 years ago
Brad Fitzpatrick	47045265b9	hostinfo: add SetDeviceModel setter, move remaining code from controlclient Updates tailscale/corp#1959 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	faa891c1f2	client/tailscale,ipn/localapi: warn on tailscale/tailscaled version skew Fixes #1905 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	56db3e2548	ipn/localapi: refresh ACME certs in background two weeks in advance Updates #1235 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Simeng He	e199e407d2	tailcfg: add IP and Types field to PingRequest Signed-off-by: Simeng He <simeng@tailscale.com>	3 years ago
Brad Fitzpatrick	57b794c338	ipn/localapi: move cert fetching code to localapi, cache, add cert subcommand Updates #1235 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Josh Bleecher Snyder	a666b546fb	ipn/ipnlocal: log number of packet filters rather than entire filter The number of packet filters can grow very large, so this log entry can be very large. We can get the packet filter server-side, so reduce verbosity here to just the number of filters present. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
Josh Bleecher Snyder	a24cee0d67	all: simplify ts_macext build tags Now that we have the easier-to-parse go:build build tags, it is straightforward to simplify them. Yay. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
David Crawshaw	360223fccb	types/dnstype: introduce new package for Resolver So the type can be used in net/dns without introducing a tailcfg dependency. For #2596 Signed-off-by: David Crawshaw <crawshaw@tailscale.com>	3 years ago
Josh Bleecher Snyder	a5da4ed981	all: gofmt with Go 1.17 This adds "//go:build" lines and tidies up existing "// +build" lines. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
Brad Fitzpatrick	f3c96df162	ipn/ipnstate: move tailscale status "active" determination to tailscaled Fixes #2579 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
David Crawshaw	0554b64452	ipnlocal: allow access to guest VMs/containers while using an exit node Signed-off-by: David Crawshaw <crawshaw@tailscale.com>	3 years ago
Josh Bleecher Snyder	8a3d52e882	wgengine/magicsock: use mono.Time magicsock makes multiple calls to Now per packet. Move to mono.Now. Changing some of the calls to use package mono has a cascading effect, causing non-per-packet call sites to also switch. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
Brad Fitzpatrick	690ade4ee1	ipn/ipnlocal: add URL to IP forwarding error message Updates #606 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
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	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
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
Brad Fitzpatrick	98ad7f279c	ipn/localapi: fix inability to receive taildrop files w/ escaped names The localapi was double-unescaping: once by net/http populating the URL, and once by ourselves later. We need to start with the raw escaped URL if we're doing it ourselves. Started to write a test but it got invasive. Will have to add those tests later in a commit that's not being cherry-picked to a release branch. Fixes #2288 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	01e159b610	ipn/ipnlocal: save prefs to disk on UpdatePrefs Regression from `6d10655dc3`, which added UpdatePrefs but didn't write it out to disk. I'd planned on adding tests to state_test.go which is why I'd earlier added `46896a9311` to prepare for making such persistence tests easier to write, but turns out state_test.go didn't even test UpdatePrefs, so I'm staying out of there. Instead, this is tested using integration tests. Fixes #2321 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
David Crawshaw	87481282eb	ipn: another controlplane synonym This one doesn't bother me so much, as long term we want a synonym here. Fixes #2384 Fixes #2386 Signed-off-by: David Crawshaw <crawshaw@tailscale.com>	3 years ago
Brad Fitzpatrick	46896a9311	ipn/ipnlocal: start to test whether all state transitions save prefs to disk Updates #2321 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	22cac33fe7	ipn: remove an unnecessary lazy map init on read path It's okay to read from a nil map. Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
David Crawshaw	805d5d3cde	ipnlocal: move log line inside if statement Signed-off-by: David Crawshaw <crawshaw@tailscale.com>	3 years ago
Brad Fitzpatrick	700badd8f8	util/deephash: move internal/deephash to util/deephash No code changes. Just a minor package doc addition about lack of API stability.	3 years ago
Josh Bleecher Snyder	f11a8928a6	ipn/ipnlocal: fix data race We can't access b.netMap without holding b.mu. We already grabbed it earlier in the function with the lock held. Introduced in Nov 2020 in `7ea809897d`. Discovered during stress testing. Apparently it's a pretty rare? Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
Maisem Ali	ec52760a3d	wgengine/router_windows: support toggling local lan access when using exit nodes. Signed-off-by: Maisem Ali <maisem@tailscale.com>	3 years ago
julianknodt	506c2fe8e2	cmd/tailscale: make netcheck use active DERP map, delete static copy After allowing for custom DERP maps, it's convenient to be able to see their latency in netcheck. This adds a query to the local tailscaled for the current DERPMap. Updates #1264 Signed-off-by: julianknodt <julianknodt@gmail.com>	3 years ago
David Crawshaw	d6f4b5f5cb	ipn, etc: use controlplane.tailscale.com Signed-off-by: David Crawshaw <crawshaw@tailscale.com>	3 years ago
Brad Fitzpatrick	45e64f2e1a	net/dns{,/resolver}: refactor DNS forwarder, send out of right link on macOS/iOS Fixes #2224 Fixes tailscale/corp#2045 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
David Crawshaw	4ce15505cb	wgengine: randomize client port if netmap says to For testing out #2187 Signed-off-by: David Crawshaw <crawshaw@tailscale.com>	3 years ago
David Crawshaw	297b3d6fa4	staticcheck.conf: turn off noisy lint errors Signed-off-by: David Crawshaw <crawshaw@tailscale.com>	3 years ago
Brad Fitzpatrick	0debb99f08	tailcfg: add DNSConfig.ExtraRecords Updates #1748 Updates #1235 Updates #2055 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Maisem Ali	f482321f67	ipn/ipnlocal: support exit node local access switching on darwin. Signed-off-by: Maisem Ali <maisem@tailscale.com>	3 years ago
Brad Fitzpatrick	cd282ec00f	tailcfg: add DNSConfig.CertDomains Updates #1235 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	cc6ab0a70f	ipn/ipnlocal: retry peerapi listen on Android, like we do on Windows Updates #1960 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Maisem Ali	f944614c5c	cmd/tailscale/web: add support for QNAP Signed-off-by: Maisem Ali <maisem@tailscale.com>	3 years ago
Brad Fitzpatrick	e29cec759a	ipn/{ipnlocal,localapi}, control/controlclient: add SetDNS localapi Updates #1235 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	ecfb2639cc	ipn/ipnlocal: avoid initPeerAPIListener crash on certain concurrent actions We were crashing on in initPeerAPIListener when called from authReconfig when b.netMap is nil. But authReconfig already returns before the call to initPeerAPIListener when b.netMap is nil, but it releases the b.mu mutex before calling initPeerAPIListener which reacquires it and assumes it's still nil. The only thing that can be setting it to nil is setNetMapLocked, which is called by ResetForClientDisconnect, Logout/logout, or Start, all of which can happen during an authReconfig. So be more defensive. Fixes #1996 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	4 years ago
Brad Fitzpatrick	713c5c9ab1	net/{interfaces,netns}: change which build tag means mac/ios Network/System Extension We used to use "redo" for that, but it was pretty vague. Also, fix the build tags broken in interfaces_default_route_test.go from `a9745a0b68`, moving those Linux-specific tests to interfaces_linux_test.go. Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	4 years ago
Brad Fitzpatrick	a321c24667	go.mod: update netaddr Involves minor IPSetBuilder.Set API change. Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	4 years ago
Avery Pennarun	eaa6507cc9	ipnlocal: in Start() fast path, don't forget to send Prefs. The resulting empty Prefs had AllowSingleHosts=false and Routeall=false, so that on iOS if you did these steps: - Login and leave running - Terminate the frontend - Restart the frontend (fast path restart, missing prefs) - Set WantRunning=false - Set WantRunning=true ...then you would have Tailscale running, but with no routes. You would also accidentally disable the ExitNodeID/IP prefs (symptom: the current exit node setting didn't appear in the UI), but since nothing else worked either, you probably didn't notice. The fix was easy enough. It turns out we already knew about the problem, so this also fixes one of the BUG entries in state_test. Fixes: #1918 (BUG-1) and some as-yet-unreported bugs with exit nodes. Signed-off-by: Avery Pennarun <apenwarr@tailscale.com>	4 years ago
Avery Pennarun	8a7d35594d	ipnlocal: don't assume NeedsLogin immediately after StartLogout(). Previously, there was no server round trip required to log out, so when you asked ipnlocal to Logout(), it could clear the netmap immediately and switch to NeedsLogin state. In v1.8, we added a true Logout operation. ipn.Logout() would trigger an async cc.StartLogout() and also immediately switch to NeedsLogin. Unfortunately, some frontends would see NeedsLogin and immediately trigger a new StartInteractiveLogin() operation, before the controlclient auth state machine actually acted on the Logout command, thus accidentally invalidating the entire logout operation, retaining the netmap, and violating the user's expectations. Instead, add a new LogoutFinished signal from controlclient (paralleling LoginFinished) and, upon starting a logout, don't update the ipn state machine until it's received. Updates: #1918 (BUG-2) Signed-off-by: Avery Pennarun <apenwarr@tailscale.com>	4 years ago
Brad Fitzpatrick	a04801e037	ipn/ipnlocal: ignore NetfilterMode pref on Synology On clean installs we didn't set use iptables, but during upgrades it looks like we could use old prefs that directed us to go into the iptables paths that might fail on Synology. Updates #1995 Fixes tailscale/tailscale-synology#57 (I think) Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	4 years ago
Elias Naur	adfe8cf41d	paths: generalize IOSSharedDir to cover Android Also fix an error message while here. Signed-off-by: Elias Naur <mail@eliasnaur.com>	4 years ago
David Anderson	df350e2069	ipn/ipnlocal: initialize DNS config maps unconditionally. Fixes #1963. Signed-off-by: David Anderson <danderson@tailscale.com>	4 years ago
David Crawshaw	293a2b11cd	ipn: allow b to be nil in NewBackendServer A couple of code paths in ipnserver use a NewBackendServer with a nil backend just to call the callback with an encapsulated error message. This covers a panic case seen in logs. For #1920 Signed-off-by: David Crawshaw <crawshaw@tailscale.com>	4 years ago
David Anderson	e2dcf63420	net/dns: replace AuthoritativeSuffixes with nil Route entries. This leads to a cleaner separation of intent vs. implementation (Routes is now the only place specifying who handles DNS requests), and allows for cleaner expression of a configuration that creates MagicDNS records without serving them to the OS. Signed-off-by: David Anderson <danderson@tailscale.com>	4 years ago
David Anderson	6690f86ef4	net/dns: always offer MagicDNS records at 100.100.100.100. Fixes #1886. Signed-off-by: David Anderson <danderson@tailscale.com>	4 years ago
Josh Bleecher Snyder	25df067dd0	all: adapt to opaque netaddr types This commit is a mishmash of automated edits using gofmt: gofmt -r 'netaddr.IPPort{IP: a, Port: b} -> netaddr.IPPortFrom(a, b)' -w . gofmt -r 'netaddr.IPPrefix{IP: a, Port: b} -> netaddr.IPPrefixFrom(a, b)' -w . gofmt -r 'a.IP.Is4 -> a.IP().Is4' -w . gofmt -r 'a.IP.As16 -> a.IP().As16' -w . gofmt -r 'a.IP.Is6 -> a.IP().Is6' -w . gofmt -r 'a.IP.As4 -> a.IP().As4' -w . gofmt -r 'a.IP.String -> a.IP().String' -w . And regexps: \w(.)\.Port = (.) -> $1 = $1.WithPort($2) \w(.)\.IP = (.) -> $1 = $1.WithIP($2) And lots of manual fixups. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	4 years ago
Avery Pennarun	6fd4e8d244	ipnlocal: fix switching users while logged in + Stopped. This code path is very tricky since it was originally designed for the "re-authenticate to refresh my keys" use case, which didn't want to lose the original session even if the refresh cycle failed. This is why it acts differently from the Logout(); Login(); case. Maybe that's too fancy, considering that it probably never quite worked at all, for switching between users without logging out first. But it works now. This was more invasive than I hoped, but the necessary fixes actually removed several other suspicious BUG: lines from state_test.go, so I'm pretty confident this is a significant net improvement. Fixes tailscale/corp#1756. Signed-off-by: Avery Pennarun <apenwarr@tailscale.com>	4 years ago
Avery Pennarun	285d0e3b4d	ipnlocal: fix deadlock in RequestEngineStatusAndWait() error path. If the engine was shutting down from a previous session (e.closing=true), it would return an error code when trying to get status. In that case, ipnlocal would never unblock any callers that were waiting on the status. Not sure if this ever happened in real life, but I accidentally triggered it while writing a test. Signed-off-by: Avery Pennarun <apenwarr@tailscale.com>	4 years ago
Brad Fitzpatrick	36a26e6a71	internal/deephash: rename from deepprint Yes, it printed, but that was an implementation detail for hashing. And coming optimization will make it print even less. Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	4 years ago
Brad Fitzpatrick	366b3d3f62	ipn{,/ipnserver}: delay JSON marshaling of ipn.Notifies If nobody is connected to the IPN bus, don't burn CPU & waste allocations (causing more GC) by encoding netmaps for nobody. This will notably help hello.ipn.dev. Updates tailscale/corp#1773 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	4 years ago
Brad Fitzpatrick	e72ed3fcc2	ipn/{ipnlocal,ipnstate}: add PeerStatus.ID stable ID to status --json output Needed for the "up checker" to map back from exit node stable IDs (the ipn.Prefs.ExitNodeID) back to an IP address in error messages. But also previously requested so people can use it to then make API calls. The upcoming "tailscale admin" subcommand will probably need it too. Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	4 years ago
Josh Bleecher Snyder	78d4c561b5	types/logger: add key grinder stats lines to rate-limiting exemption list Updates #1749 Co-authored-by: Brad Fitzpatrick <bradfitz@tailscale.com> Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	4 years ago
Avery Pennarun	6d10655dc3	ipnlocal: accept a new opts.UpdatePrefs field. This is needed because the original opts.Prefs field was at some point subverted for use in frontend->backend state migration for backward compatibility on some platforms. We still need that feature, but we also need the feature of providing the full set of prefs from `tailscale up`, not including overwriting the prefs.Persist keys, so we can't use the original field from `tailscale up`. `tailscale up` had attempted to compensate for that by doing SetPrefs() before Start(), but that violates the ipn.Backend contract, which says you should call Start() before anything else (that's why it's called Start()). As a result, doing SetPrefs({ControlURL=..., WantRunning=true}) would cause a connection to the previous control server (because WantRunning=true), and then connect to the new control server only after running Start(). This problem may have been avoided before, but only by pure luck. It turned out to be relatively harmless since the connection to the old control server was immediately closed and replaced anyway, but it created a race condition that could have caused spurious notifications or rejected keys if the server responded quickly. As already covered by existing TODOs, a better fix would be to have Start() get out of the business of state migration altogether. But we're approaching a release so I want to make the minimum possible fix. Fixes #1840. Signed-off-by: Avery Pennarun <apenwarr@tailscale.com>	4 years ago

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547 Commits (ad3d6e31f0d9b656b1c8ed6b8d6c46452f0ad225)