150 Commits (main)

Author	SHA1	Message	Date
Brad Fitzpatrick	bb94561c96	net/netutil: fix regression where peerapi would get closed after 1st req ... I introduced a bug in 8fe503057d when unifying oneConnListener implementations. The NewOneConnListenerFrom API was easy to misuse (its Close method closes the underlying Listener), and we did (via http.Serve, which closes the listener after use, which meant we were close the peerapi's listener, even though we only wanted its Addr) Instead, combine those two constructors into one and pass in the Addr explicitly, without delegating through to any Listener. Change-Id: I061d7e5f842e0cada416e7b2dd62100d4f987125 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Brad Fitzpatrick	de72a1f9fc	ipn/ipnserver: let TS_PERMIT_CERT_UID contain a username too, not just uid ... Don't make users map their system's "caddy" (or whatever) system user to its userid. We can do that. Support either a uid or a username. RELNOTE=TS_PERMIT_CERT_UID can contain a uid or username Change-Id: I7451b537a5e118b818addf1353882291d5f0d07f Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 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>	2 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>	2 years ago
Aaron Klotz	d7962e3bcf	ipn/ipnserver, util/winutil: update workaround for os/user.LookupId failures on Windows to reject SIDs from deleted/invalid security principals. ... Our current workaround made the user check too lax, thus allowing deleted users. This patch adds a helper function to winutil that checks that the uid's SID represents a valid Windows security principal. Now if `lookupUserFromID` determines that the SID is invalid, we simply propagate the error. Updates https://github.com/tailscale/tailscale/issues/869 Signed-off-by: Aaron Klotz <aaron@tailscale.com>	2 years ago
Brad Fitzpatrick	ca774c3249	ipn/ipnserver: add TS_PERMIT_CERT_UID envknob to give webservers cert access ... So you can run Caddy etc as a non-root user and let it have access to get certs. Updates caddyserver/caddy#4541 Change-Id: Iecc5922274530e2b00ba107d4b536580f374109b Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Brad Fitzpatrick	b03170b901	ipn/ipnserver: provide means of setting debug env vars on Windows ... Fixes #3688 Change-Id: I2f88ca32bf764e2b084fe544d821c43b6a20ffa5 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 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>	2 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	2 years ago
Josh Bleecher Snyder	63cd581c3f	safesocket: add ConnectionStrategy, provide control over fallbacks ... fee2d9fad added support for cmd/tailscale to connect to IPNExtension. It came in two parts: If no socket was provided, dial IPNExtension first, and also, if dialing the socket failed, fall back to IPNExtension. The second half of that support caused the integration tests to fail when run on a machine that was also running IPNExtension. The integration tests want to wait until the tailscaled instances that they spun up are listening. They do that by dialing the new instance. But when that dial failed, it was falling back to IPNExtension, so it appeared (incorrectly) that tailscaled was running. Hilarity predictably ensued. If a user (or a test) explicitly provides a socket to dial, it is a reasonable assumption that they have a specific tailscaled in mind and don't want to fall back to IPNExtension. It is certainly true of the integration tests. Instead of adding a bool to Connect, split out the notion of a connection strategy. For now, the implementation remains the same, but with the details hidden a bit. Later, we can improve that. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	2 years ago
Todd Neal	c18dc57861	ipn/{ipnserver,ipnlocal}: support incoming Taildrop on TrueNAS ... Signed-off-by: Todd Neal <todd@tneal.org>	2 years ago
Brad Fitzpatrick	abc00e9c8d	ipn/{ipnserver,ipnlocal}: support incoming Taildrop on Synology ... If the user has a "Taildrop" shared folder on startup and the "tailscale" system user has read/write access to it, then the user can "tailscale file cp" to their NAS. Updates #2179 (would be fixes, but not super ideal/easy yet) Change-Id: I68e59a99064b302abeb6d8cc84f7d2a09f764990 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Brad Fitzpatrick	adc5997592	net/tsdial: give netstack a Dialer, start refactoring name resolution ... This starts to refactor tsdial.Dialer's name resolution to have different stages: in-memory MagicDNS vs system resolution. A future change will plug in ExitDNS resolution. This also plumbs a Dialer into netstack and unexports the dnsMap internals. And it removes some of the async AddNetworkMapCallback usage and replaces it with synchronous updates of the Dialer's netmap from LocalBackend, since the LocalBackend has the Dialer too. Updates #3475 Change-Id: Idcb7b1169878c74f0522f5151031ccbc49fe4cb4 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Brad Fitzpatrick	ad3d6e31f0	net/tsdial: move macOS/iOS peerapi sockopt logic from LocalBackend ... Change-Id: I812cae027c40c70cdc701427b1a1850cd9bcd60c Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Brad Fitzpatrick	c7fb26acdb	net/tsdial: also plumb TUN name and monitor into tsdial.Dialer ... In prep for moving stuff out of LocalBackend. Change-Id: I9725aa9c3ebc7275f8c40e040b326483c0340127 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Brad Fitzpatrick	c37af58ea4	net/tsdial: move more weirdo dialing into new tsdial package, plumb ... Not done yet, but this move more of the outbound dial special casing from random packages into tsdial, which aspires to be the one unified place for all outbound dialing shenanigans. Then this plumbs it all around, so everybody is ultimately holding on to the same dialer. As of this commit, macOS/iOS using an exit node should be able to reach to the exit node's DoH DNS proxy over peerapi, doing the sockopt to stay within the Network Extension. A number of steps remain, including but limited to: * move a bunch more random dialing stuff * make netstack-mode tailscaled be able to use exit node's DNS proxy, teaching tsdial's resolver to use it when an exit node is in use. Updates #1713 Change-Id: I1e8ee378f125421c2b816f47bc2c6d913ddcd2f5 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Brad Fitzpatrick	87137405e5	ipn/ipnserver: grant js/wasm all localapi permissions ... Updates #3157 Change-Id: I3b63762583a4d655eac33ce3dfda37a1f5135a57 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	01bd789c26	ipn/ipnserver: add Server.LocalBackend accessor ... Was done as part of e6fbc0cd54 for ssh work, but wasn't committed yet. Including it here both to minimize the ssh diff size, and because I need it for a separate change. Change-Id: If6eb54a2ca7150ace96488ed14582c2c05ca3422 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	e6fbc0cd54	cmd/tailscaled, ipn/ipnserver: refactor ipnserver ... More work towards removing the massive ipnserver.Run and ipnserver.Options and making composable pieces. Work remains. (The getEngine retry loop on Windows complicates things.) For now some duplicate code exists. Once the Windows side is fixed to either not need the retry loop or to move the retry loop into a custom wgengine.Engine wrapper, then we can unify tailscaled_windows.go too. Change-Id: If84d16e3cd15b54ead3c3bb301f27ae78d055f80 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	649f7556e8	cmd/tailscaled, ipn: add tailscaled --statedir flag for var directory ... Fixes #2932 Change-Id: I1aa2b323ad542386d140f8336bcc4dcbb8310bd0 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	22dbaa0894	ipn/ipnserver: add New, Server.Server ... Change-Id: I1dc85a5131b9a628d7fc780fde7103492cd3f1f8 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	d381bc2b6c	ipn/ipnserver: move the unserved connection logic to a Listener ... So future refactors can only deal with a net.Listener and be unconcerned with their caller's (Windows-specific) struggles. Change-Id: I0af588b9a769ab65c59b0bd21f8a0c99abfa1784 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	c23a378f63	ipn/ipnserver: start refactoring ipnserver.Run into smaller pieces ... I'll keep ipnserver.Run for compatibility, but it'll be a wrapper around several smaller pieces. (more testable too) For now, start untangling some things in preparation. Plan is to have to have a constructor for the just-exported ipnserver.Server type that takes a LocalBackend and can accept (in a new method) on a provided listener. Change-Id: Ide73aadaac1a82605c97a2af1321d0d8f60b2a8c Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	869999955d	ipn/ipnserver: export server type as Server ... It's all opaque, there's no constructor, and no exported methods, so it's useless at this point, but this is one small refactoring step. Change-Id: Id961e8880cf0c84f1a0a989eefff48ecb3735add Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Aaron Klotz	6425f497b1	ipn/ipnserver paths: add paths.LegacyStateFilePath ... Moving this information into a centralized place so that it is accessible to code in subsequent commits. Updates #3011 Signed-off-by: Aaron Klotz <aaron@tailscale.com>	3 years ago
nicksherron	f01ff18b6f	all: fix spelling mistakes ... Signed-off-by: nicksherron <nsherron90@gmail.com>	3 years ago
Maxime VISONNEAU	4528f448d6	ipn/store/aws, cmd/tailscaled: add AWS SSM ipn.StateStore implementation ... From https://github.com/tailscale/tailscale/pull/1919 with edits by bradfitz@. This change introduces a new storage provider for the state file. It allows users to leverage AWS SSM parameter store natively within tailscaled, like: $ tailscaled --state=arn:aws:ssm:eu-west-1:123456789:parameter/foo Known limitations: - it is not currently possible to specific a custom KMS key ID RELNOTE=tailscaled on Linux supports using AWS SSM for state Edits-By: Brad Fitzpatrick <bradfitz@tailscale.com> Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com> Signed-off-by: Maxime VISONNEAU <maxime.visonneau@gmail.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
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
Maisem Ali	0842e2f45b	ipn/store: add ability to store data as k8s secrets. ... Signed-off-by: Maisem Ali <maisem@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
Maisem Ali	f944614c5c	cmd/tailscale/web: add support for QNAP ... Signed-off-by: Maisem Ali <maisem@tailscale.com>	3 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>	3 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>	3 years ago
Brad Fitzpatrick	91c9c33036	cmd/tailscaled: don't block ipnserver startup behind engine init on Windows ... With this change, the ipnserver's safesocket.Listen (the localhost tcp.Listen) happens right away, before any synchronous TUN/DNS/Engine/etc setup work, which might be slow, especially on early boot on Windows. Because the safesocket.Listen starts up early, that means localhost TCP dials (the safesocket.Connect from the GUI) complete successfully and thus the GUI avoids the MessageBox error. (I verified that pacifies it, even without a Listener.Accept; I'd feared that Windows localhost was maybe special and avoided the normal listener backlog). Once the GUI can then connect immediately without errors, the various timeouts then matter less, because the backend is no longer trying to race against the GUI's timeout. So keep retrying on errors for a minute, or 10 minutes if the system just booted in the past 10 minutes. This should fix the problem with Windows 10 desktops auto-logging in and starting the Tailscale frontend which was then showing a MessageBox error about failing to connect to tailscaled, which was slow coming up because the Windows networking stack wasn't up yet. Fingers crossed. Fixes #1313 (previously #1187, etc) Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	f99e63bb17	ipn: don't Logout when Windows GUI disconnects ... Logout used to be a no-op, so the ipnserver previously synthensized a Logout on disconnect. Now that Logout actually invalidates the node key that was forcing all GUI closes to log people out. Instead, add a method to LocalBackend to specifically mean "the Windows GUI closed, please forget all the state". Fixes tailscale/corp#1591 (ignoring the notification issues, tracked elsewhere) Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	8f3e453356	ipn, cmd/tailscale/cli: add pref to configure sudo-free operator user ... From discussion with @danderson. Fixes #1684 (in a different way) Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	950fc28887	ipn, paths, cmd/tailscaled: remove LegacyConfigPath, relaynode migration ... It is time. Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Maisem Ali	db13b2d0c8	cmd/tailscale, ipn/localapi: add "tailscale bugreport" subcommand ... Adding a subcommand which prints and logs a log marker. This should help diagnose any issues that users face. Fixes #1466 Signed-off-by: Maisem Ali <maisem@tailscale.com>	3 years ago
Brad Fitzpatrick	27c4dd9a97	Revert "cmd/tailscaled, ipn/{ipnlocal,ipnserver}: let netstack get access to LocalBackend" ... This reverts commit 2bc518dcb2. @namansood didn't end up needing it in his 770aa71ffb.	3 years ago
Brad Fitzpatrick	2bc518dcb2	cmd/tailscaled, ipn/{ipnlocal,ipnserver}: let netstack get access to LocalBackend ... Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	43b30e463c	ipn/ipnserver: refactor permissions checks a bit, document more, fix Windows ... Windows was only running the localapi on the debug port which was a stopgap at the time while doing peercreds work. Removed that, and wired it up correctly, with some more docs. More clean-up to do after 1.6, moving the localhost TCP auth code into the peercreds package. But that's too much for now, so the docs will have to suffice, even if it's at a bit of an awkward stage with the newly-renamed "NotWindows" field, which still isn't named well, but it's better than its old name of "Unknown" which hasn't been accurate since unix sock peercreds work anyway. Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	1ca3e739f7	ipn/ipnserver: set PermitWrite on localapi handler ... The TODO was easy now with peerCreds and the isReadonlyConn func. Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	15b6969a95	ipn/ipnserver: grant client r/w access if peer uid matches tailscaled ... Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	be779b3587	safesocket, ipn/ipnserver: unify peercred info, fix bug on FreeBSD etc ... FreeBSD wasn't able to run "tailscale up" since the recent peercred refactoring. Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	38dc6fe758	cmd/tailscaled, wgengine: remove --fake, replace with netstack ... And add a --socks5-server flag. And fix a race in SOCKS5 replies where the response header was written concurrently with the copy from the backend. Co-authored with Naman Sood. Updates #707 Updates #504 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	f11952ad7f	ipn/ipnserver: fix Windows connection auth regression ... Regression from code movement in d3efe8caf6 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	7038c09bc9	ipn/ipnserver: on darwin, let users who are admins use CLI without sudo ... Tangentially related to #987, #177, #594, #925, #505 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	d3efe8caf6	safesocket, ipn/ipnserver: look up peer creds on Darwin ... And open up socket permissions like Linux, now that we know who connections are from. This uses the new inet.af/peercred that supports Linux and Darwin at the moment. Fixes #1347 Fixes #1348 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	fdac0387a7	ipn/ipnserver, ipn/ipnlocal: move whois handler to new localapi package	3 years ago
Brad Fitzpatrick	d76334d2f0	ipn: split LocalBackend off into new ipn/ipnlocal package ... And move a couple other types down into leafier packages. Now cmd/tailscale doesn't bring in netlink, magicsock, wgengine, etc. Fixes #1181 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	006a224f50	ipn/ipnserver, cmd/hello: do whois over unix socket, not debug http ... Start of a local HTTP API. Not a stable interface yet.	3 years ago
Brad Fitzpatrick	c611d8480b	cmd/tailscaled: add whois/identd-ish debug handler	3 years ago
Brad Fitzpatrick	4d3c09ced4	ipn/ipnserver: on Windows in unattended mode, wait for Engine forever ... Updates #1187	3 years ago
Brad Fitzpatrick	5611f290eb	ipn, ipnserver: only require sudo on Linux for mutable CLI actions ... This partially reverts d6e9fb1df0, which modified the permissions on the tailscaled Unix socket and thus required "sudo tailscale" even for "tailscale status". Instead, open the permissions back up (on Linux only) but have the server look at the peer creds and only permit read-only actions unless you're root. In the future we'll also have a group that can do mutable actions. On OpenBSD and FreeBSD, the permissions on the socket remain locked down to 0600 from d6e9fb1df0. Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	5aa5db89d6	cmd/tailscaled, wgengine/netstack: add start of gvisor userspace netstack work ... Not usefully functional yet (mostly a proof of concept), but getting it submitted for some work @namansood is going to do atop this. Updates #707 Updates #634 Updates #48 Updates #835	3 years ago
Brad Fitzpatrick	053a1d1340	all: annotate log verbosity levels on most egregiously spammy log prints ... Fixes #924 Fixes #282 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Christine Dodrill	7ea809897d	ipn/ipnserver: enable systemd-notify support ... Addresses #964 Still to be done: - Figure out the correct logging lines in util/systemd - Figure out if we need to slip the systemd.Status function anywhere else - Log util/systemd errors? (most of the errors are of the "you cannot do anything about this, but it might be a bad idea to crash the program if it errors" kind) Assistance in getting this over the finish line would help a lot. Signed-off-by: Christine Dodrill <me@christine.website> util/systemd: rename the nonlinux file to appease the magic Signed-off-by: Christine Dodrill <me@christine.website> util/systemd: fix package name Signed-off-by: Christine Dodrill <me@christine.website> util/systemd: fix review feedback from @mdlayher Signed-off-by: Christine Dodrill <me@christine.website> cmd/tailscale{,d}: update depaware manifests Signed-off-by: Christine Dodrill <me@christine.website> util/systemd: use sync.Once instead of func init Signed-off-by: Christine Dodrill <me@christine.website> control/controlclient: minor review feedback fixes Signed-off-by: Christine Dodrill <me@christine.website> {control,ipn,systemd}: fix review feedback Signed-off-by: Christine Dodrill <me@christine.website> review feedback fixes Signed-off-by: Christine Dodrill <me@christine.website> ipn: fix sprintf call Signed-off-by: Christine Dodrill <me@christine.website> ipn: make staticcheck less sad Signed-off-by: Christine Dodrill <me@christine.website> ipn: print IP address in connected status Signed-off-by: Christine Dodrill <me@christine.website> ipn: review feedback Signed-off-by: Christine Dodrill <me@christine.website> final fixups Signed-off-by: Christine Dodrill <me@christine.website>	3 years ago
Brad Fitzpatrick	acade77c86	ipn/ipnserver: add knob to disable babysitter	4 years ago
Brad Fitzpatrick	07b6ffd55c	ipn: only use Prefs, not computed stateKey, to determine server mode ... When the service was running without a client (e.g. after a reboot) and then the owner logs in and the GUI attaches, the computed state key changed to "" (driven by frontend prefs), and then it was falling out of server mode, despite the GUI-provided prefs still saying it wanted server mode. Also add some logging. And remove a scary "Access denied" from a user-visible error, making the two possible already-in-use error messages consistent with each other.	4 years ago
Brad Fitzpatrick	20a357b386	ipn, ipn/ipnserver: add IPN state for server in use, handle explicitly ... On Windows, we were previously treating a server used by different users as a fatal error, which meant the second user (upon starting Tailscale, explicitly or via Start Up programs) got an invasive error message dialog. Instead, give it its own IPN state and change the Notify.ErrMessage to be details in that state. Then the Windows GUI can be less aggresive about that happening. Also, * wait to close the IPN connection until the server ownership state changes so the GUI doesn't need to repeatedly reconnect to discover changes. * fix a bug discovered during testing: on system reboot, the ipnserver's serverModeUser was getting cleared while the state transitioned from Unknown to Running. Instead, track 'inServerMode' explicitly and remove the old accessor method which was error prone. * fix a rare bug where the client could start up and set the server mode prefs in its Start call and we wouldn't persist that to the StateStore storage's prefs start key. (Previously it was only via a prefs toggle at runtime)	4 years ago
Brad Fitzpatrick	f3aa08de76	ipn/ipnserver: remove "Server mode" from a user-visible error message ... That's an internal nickname.	4 years ago
Brad Fitzpatrick	ff7ddd9d20	ipn/ipnserver: move Windows local disk logging up to the parent process ... To capture panics, log.Printf writes to os.Stderr, etc. Fixes #726	4 years ago
Brad Fitzpatrick	c64718e9a0	ipn/ipnserver: work around os/user.LookupId failure on Windows ... If we can't find the mapping from SID ("user ID") -> username, don't treat that as a fatal. Apparently that happens in the wild for Reasons. Ignore it for now. It's just a nice-to-have for error messages in the rare multi-user case. Updates #869 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	4 years ago
David Anderson	54e6c3a290	version: use OSS repo's version when building. ... When building with redo, also include the git commit hash from the proprietary repo, so that we have a precise commit that identifies all build info (including Go toolchain version). Add a top-level build script demonstrating to downstream distros how to burn the right information into builds. Adjust `tailscale version` to print commit hashes when available. Fixes #841. Signed-off-by: David Anderson <danderson@tailscale.com>	4 years ago
Brad Fitzpatrick	515866d7c6	ipn, ipnserver, cmd/tailscale: add "server mode" support on Windows ... This partially (but not yet fully) migrates Windows to tailscaled's StateStore storage system. This adds a new bool Pref, ForceDaemon, defined as: // ForceDaemon specifies whether a platform that normally // operates in "client mode" (that is, requires an active user // logged in with the GUI app running) should keep running after the // GUI ends and/or the user logs out. // // The only current applicable platform is Windows. This // forced Windows to go into "server mode" where Tailscale is // running even with no users logged in. This might also be // used for macOS in the future. This setting has no effect // for Linux/etc, which always operate in daemon mode. Then, when ForceDaemon becomes true, we now write use the StateStore to track which user started it in server mode, and store their prefs under that key. The ipnserver validates the connections/identities and informs that LocalBackend which userid is currently in charge. The GUI can then enable/disable server mode at runtime, without using the CLI. But the "tailscale up" CLI was also fixed, so Windows users can use authkeys or ACL tags, etc. Updates #275	4 years ago
Brad Fitzpatrick	638127530b	ipn/ipnserver: prevent use by multiple Windows users, add HTML status page ... It was previously possible for two different Windows users to connect to the IPN server at once, but it didn't really work. They mostly stepped on each other's toes and caused chaos. Now only one can control it, but it can be active for everybody else. Necessary dependency step for Windows server/headless mode (#275) While here, finish wiring up the HTTP status page on Windows, now that all the dependent pieces are available.	4 years ago
Josh Bleecher Snyder	585a0d8997	all: use testing.T.TempDir ... Bit of Friday cleanup. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	4 years ago
Brad Fitzpatrick	4f71319f7c	ipn/ipnserver: make ipnserver also be an HTTP server for localhost clients ... For now it just says hello to show auth works. More later.	4 years ago
Brad Fitzpatrick	dd97111d06	backoff: update to Go style, document a bit, make 30s explicit ... Also, bit of behavior change: on non-nil err but expired context, don't reset the consecutive failure count. I don't think the old behavior was intentional. Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	4 years ago
Brad Fitzpatrick	cbf71d5eba	ipn/ipnserver: fix bug in earlier commit where conn can be stranded ... If a connection causes getEngine to transition from broken to fixed, that connection was getting lost.	4 years ago
Brad Fitzpatrick	9ff5b380cb	ipn/ipnserver: staticcheck is not wrong ... shamecube.gif	4 years ago
Brad Fitzpatrick	4aba86cc03	ipn/ipnserver: make Engine argument a func that tries again for each connection ... So a backend in server-an-error state (as used by Windows) can try to create a new Engine again each time somebody re-connects, relaunching the GUI app. (The proper fix is actually fixing Windows issues, but this makes things better in the short term) Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	4 years ago
Brad Fitzpatrick	1f923124bf	ipn/ipnserver: support simultaneous connections ... Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	4 years ago
Dmytro Shynkevych	61abab999e	cmd/tailscaled: graceful shutdown (#534) ... Signed-off-by: Dmytro Shynkevych <dmytro@tailscale.com>	4 years ago
Brad Fitzpatrick	3984f9be2f	ipn, ipn/ipnserver: add support for serving in error-message-only mode ... So Windows service failures can be propagated to the Windows UI client.	4 years ago
David Anderson	9cd4e65191	smallzstd: new package that constructs zstd small encoders/decoders. ... It's just a config wrapper that passes "use less memory at the expense of compression" parameters by default, so that we don't accidentally construct resource-hungry (de)compressors. Also includes a benchmark that measures the memory cost of the small variants vs. the stock variants. The savings are significant on both compressors (~8x less memory) and decompressors (~1.4x less, not including the savings from the significantly smaller window on the compression side - with those savings included it's more like ~140x smaller). BenchmarkSmallEncoder-8 56174 19354 ns/op 31 B/op 0 allocs/op BenchmarkSmallEncoderWithBuild-8 2900 382940 ns/op 1746547 B/op 36 allocs/op BenchmarkStockEncoder-8 48921 25761 ns/op 286 B/op 0 allocs/op BenchmarkStockEncoderWithBuild-8 426 2630241 ns/op 13843842 B/op 124 allocs/op BenchmarkSmallDecoder-8 123814 9344 ns/op 0 B/op 0 allocs/op BenchmarkSmallDecoderWithBuild-8 41547 27455 ns/op 27694 B/op 31 allocs/op BenchmarkStockDecoder-8 129832 9417 ns/op 1 B/op 0 allocs/op BenchmarkStockDecoderWithBuild-8 25561 51751 ns/op 39607 B/op 92 allocs/op Signed-off-by: David Anderson <danderson@tailscale.com>	4 years ago
David Anderson	c71754eba2	ipn/ipnserver: revert decoder memory limit. ... The zstd library treats that limit as a hard cap on decompressed size, in the mode we're using it, rather than a window size. Signed-off-by: David Anderson <danderson@tailscale.com>	4 years ago
Avery Pennarun	db051fb013	ipnserver and logpolicy: configure zstd with low-memory settings. ... The compressed blobs we send back and forth are small and infrequent, which doesn't justify the 8MB * GOMAXPROCS memory that was being allocated. This was the overwhelming majority of memory use in tailscaled. On my system it goes from ~100M RSS to ~15M RSS (which is still suspiciously high, but we can worry about that more later). Signed-off-by: Avery Pennarun <apenwarr@tailscale.com>	4 years ago
Wendi Yu	bb55694c95	wgengine: log node IDs when peers are added/removed (#381) ... Also stop logging data sent/received from nodes we're not connected to (ie all those `x`s being logged in the `peers: ` line) Signed-off-by: Wendi <wendi.yu@yahoo.ca>	4 years ago
Avery Pennarun	08acb502e5	Add tstest.PanicOnLog(), and fix various problems detected by this. ... If a test calls log.Printf, 'go test' horrifyingly rearranges the output to no longer be in chronological order, which makes debugging virtually impossible. Let's stop that from happening by making log.Printf panic if called from any module, no matter how deep, during tests. This required us to change the default error handler in at least one http.Server, as well as plumbing a bunch of logf functions around, especially in magicsock and wgengine, but also in logtail and backoff. To add insult to injury, 'go test' also rearranges the output when a parent test has multiple sub-tests (all the sub-test's t.Logf is always printed after all the parent tests t.Logf), so we need to screw around with a special Logf that can point at the "current" t (current_t.Logf) in some places. Probably our entire way of using subtests is wrong, since 'go test' would probably like to run them all in parallel if you called t.Parallel(), but it definitely can't because the're all manipulating the shared state created by the parent test. They should probably all be separate toplevel tests instead, with common setup/teardown logic. But that's a job for another time. Signed-off-by: Avery Pennarun <apenwarr@tailscale.com>	4 years ago
Wendi Yu	0c69b4e00d	Implement rate limiting on log messages (#356) ... Implement rate limiting on log messages Addresses issue #317, where logs can get spammed with the same message nonstop. Created a rate limiting closure on logging functions, which limits the number of messages being logged per second based on format string. To keep memory usage as constant as possible, the previous cache purging at periodic time intervals has been replaced by an LRU that discards the oldest string when the capacity of the cache is reached. Signed-off-by: Wendi Yu <wendi.yu@yahoo.ca>	4 years ago
Brad Fitzpatrick	45f2b53aca	all: remove unnecessary trailing newlines in format patterns for consistency ... And document on logger.Logf that it's unnecessary.	4 years ago
Brad Fitzpatrick	a4ef345737	cmd/tailscale: add status subcommand ... Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	4 years ago
Brad Fitzpatrick	322499473e	cmd/tailscaled, wgengine, ipn: add /debug/ipn handler with world state ... Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	4 years ago
Avery Pennarun	b4897e7de8	controlclient/netmap: write our own b.ConciseDiffFrom(a) function. ... This removes the need for go-cmp, which is extremely bloaty so we had to leave it out of iOS. As a result, we had also left it out of macOS, and so we didn't print netmap diffs at all on darwin-based platforms. Oops. As a bonus, the output format of the new function is way better. Minor oddity: because I used the dumbest possible diff algorithm, the sort order is a bit dumb. We print all "removed" lines and then print all "added" lines, rather than doing the usual diff-like thing of interspersing them. This probably doesn't matter (maybe it's an improvement).	4 years ago
Brad Fitzpatrick	4cf5ac3060	ipn/ipnserver: remove unnecessary closure parameter	4 years ago
Brad Fitzpatrick	06092a3af3	ipn/ipnserver: document potential race, start on test for it	4 years ago
Brad Fitzpatrick	3988ddc85d	types/logger: add WithPrefix, use it in two places ... Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	4 years ago
Brad Fitzpatrick	367ffde21a	ipn: misc cleanup ... Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	4 years ago
David Anderson	0c55777fed	ipn: temporary support for loading legacy relaynode configs. ... Signed-off-by: David Anderson <dave@natulte.net>	4 years ago
David Anderson	cf1e386cbd	ipn: move Options.ServerURL into Prefs. ... We can't rely on a frontend to provide a control server URL, so this naturally belongs in server-persisted state. Signed-off-by: David Anderson <dave@natulte.net>	4 years ago
David Anderson	4460bd638b	safesocket: simplify API. ... On unix, we want to provide a full path to the desired unix socket. On windows, currently we want to provide a TCP port, but someday we'll also provide a "path-ish" object for a named pipe. For now, simplify the API down to exactly a path and a TCP port. Signed-off-by: David Anderson <dave@natulte.net>	4 years ago
David Anderson	62fb652eef	cmd/tailscaled: run off internal state autonomously. ... With this change, tailscaled can be restarted and reconnect without interaction from `tailscale`, and `tailscale` is merely there to provide login assistance and adjust preferences. Signed-off-by: David Anderson <dave@natulte.net>	4 years ago
Brad Fitzpatrick	2896be60db	Move "logger" package to under types, now that we have it. ... Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	4 years ago
David Anderson	dec5d64593	ipn/ipnserver: remove Options.AllowQuit. ... It was previously used by the MacOS client, but it now does something different. ipnserver should never obey a client's request to exit. Signed-off-by: David Anderson <dave@natulte.net>	4 years ago
David Anderson	5bc632271b	Introduce a state store to LocalBackend. ... The store is passed-in by callers of NewLocalBackend and ipnserver.Run, but currently all callers are hardcoded to an in-memory store. The store is unused. Signed-Off-By: David Anderson <dave@natulte.net>	4 years ago
David Anderson	81eedcd5be	ipnserver: ignore lint error for unused context. ... The linter is strictly correct, but the code is structured this way to avoid variable shadowing problems in the following for loop. The context doesn't leak. Staticcheck is correctly pointing out that this code is hard to follow. However, this chunk of code is in service of enforcing one frontend <> one backend, and we want to remove that limitation. So, we'll just ignore the lint warning until this entire piece of code goes away. Signed-off-by: David Anderson <dave@natulte.net>	4 years ago
Earl Lee	a8d8b8719a	Move Linux client & common packages into a public repo.	4 years ago