1493 Commits (0926954cf5866f9c2d1bd908d1218d86161adece)

Author	SHA1	Message	Date
Nick Khyl	b48c8db69c	ipn/ipnlocal: set WantRunning upon an interactive login, but not during a seamless renewal or a profile switch ... The LocalBackend's state machine starts in NoState and soon transitions to NeedsLogin if there's no auto-start profile, with the profileManager starting with a new empty profile. Notably, entering the NeedsLogin state blocks engine updates. We expect the user to transition out of this state by logging in interactively, and we set WantRunning to true when controlclient enters the StateAuthenticated state. While our intention is correct, and completing an interactive login should set WantRunning to true, our assumption that logging into the current Tailscale profile is the only way to transition out of the NeedsLogin state is not accurate. Another common transition path includes an explicit profile switch (via LocalBackend.SwitchProfile) or an implicit switch when a Windows user connects to the backend. This results in a bug where WantRunning is set to true even when it was previously set to false, and the user expressed no intention of changing it. A similar issue occurs when switching from (sic) a Tailnet that has seamlessRenewalEnabled, regardless of the current state of the LocalBackend's state machine, and also results in unexpectedly set WantRunning. While this behavior is generally undesired, it is also incorrect that it depends on the control knobs of the Tailnet we're switching from rather than the Tailnet we're switching to. However, this issue needs to be addressed separately. This PR updates LocalBackend.SetControlClientStatus to only set WantRunning to true in response to an interactive login as indicated by a non-empty authURL. Fixes #6668 Fixes #11280 Updates #12756 Signed-off-by: Nick Khyl <nickk@tailscale.com>	3 weeks ago
Nick Khyl	80b2b45d60	ipn/ipnlocal: refactor and cleanup profileManager ... In preparation for multi-user and unattended mode improvements, we are refactoring and cleaning up `ipn/ipnlocal.profileManager`. The concept of the "current user", which is only relevant on Windows, is being deprecated and will soon be removed to allow more than one Windows user to connect and utilize `LocalBackend` according to that user's access rights to the device and specific Tailscale profiles. We plan to pass the user's identity down to the `profileManager`, where it can be used to determine the user's access rights to a given `LoginProfile`. While the new permission model in `ipnauth` requires more work and is currently blocked pending PR reviews, we are updating the `profileManager` to reduce its reliance on the concept of a single OS user being connected to the backend at the same time. We extract the switching to the default Tailscale profile, which may also trigger legacy profile migration, from `profileManager.SetCurrentUserID`. This introduces `profileManager.DefaultUserProfileID`, which returns the default profile ID for the current user, and `profileManager.SwitchToDefaultProfile`, which is essentially a shorthand for `pm.SwitchProfile(pm.DefaultUserProfileID())`. Both methods will eventually be updated to accept the user's identity and utilize that user's default profile. We make access checks more explicit by introducing the `profileManager.checkProfileAccess` method. The current implementation continues to use `profileManager.currentUserID` and `LoginProfile.LocalUserID` to determine whether access to a given profile should be granted. This will be updated to utilize the `ipnauth` package and the new permissions model once it's ready. We also expand access checks to be used more widely in the `profileManager`, not just when switching or listing profiles. This includes access checks in methods like `SetPrefs` and, most notably, `DeleteProfile` and `DeleteAllProfiles`, preventing unprivileged Windows users from deleting Tailscale profiles owned by other users on the same device, including profiles owned by local admins. We extract `profileManager.ProfilePrefs` and `profileManager.SetProfilePrefs` methods that can be used to get and set preferences of a given `LoginProfile` if `profileManager.checkProfileAccess` permits access to it. We also update `profileManager.setUnattendedModeAsConfigured` to always enable unattended mode on Windows if `Prefs.ForceDaemon` is true in the current `LoginProfile`, even if `profileManager.currentUserID` is `""`. This facilitates enabling unattended mode via `tailscale up --unattended` even if `tailscale-ipn.exe` is not running, such as when a Group Policy or MDM-deployed script runs at boot time, or when Tailscale is used on a Server Code or otherwise headless Windows environments. See #12239, #2137, #3186 and https://github.com/tailscale/tailscale/pull/6255#issuecomment-2016623838 for details. Fixes #12239 Updates tailscale/corp#18342 Updates #3186 Updates #2137 Signed-off-by: Nick Khyl <nickk@tailscale.com>	3 weeks ago
Nick Khyl	961ee321e8	ipn/{ipnauth,ipnlocal,ipnserver,localapi}: start baby step toward moving access checks from the localapi.Handler to the LocalBackend ... Currently, we use PermitRead/PermitWrite/PermitCert permission flags to determine which operations are allowed for a LocalAPI client. These checks are performed when localapi.Handler handles a request. Additionally, certain operations (e.g., changing the serve config) requires the connected user to be a local admin. This approach is inherently racey and is subject to TOCTOU issues. We consider it to be more critical on Windows environments, which are inherently multi-user, and therefore we prevent more than one OS user from connecting and utilizing the LocalBackend at the same time. However, the same type of issues is also applicable to other platforms when switching between profiles that have different OperatorUser values in ipn.Prefs. We'd like to allow more than one Windows user to connect, but limit what they can see and do based on their access rights on the device (e.g., an local admin or not) and to the currently active LoginProfile (e.g., owner/operator or not), while preventing TOCTOU issues on Windows and other platforms. Therefore, we'd like to pass an actor from the LocalAPI to the LocalBackend to represent the user performing the operation. The LocalBackend, or the profileManager down the line, will then check the actor's access rights to perform a given operation on the device and against the current (and/or the target) profile. This PR does not change the current permission model in any way, but it introduces the concept of an actor and includes some preparatory work to pass it around. Temporarily, the ipnauth.Actor interface has methods like IsLocalSystem and IsLocalAdmin, which are only relevant to the current permission model. It also lacks methods that will actually be used in the new model. We'll be adding these gradually in the next PRs and removing the deprecated methods and the Permit* flags at the end of the transition. Updates tailscale/corp#18342 Signed-off-by: Nick Khyl <nickk@tailscale.com>	3 weeks ago
Kristoffer Dalby	a2c42d3cd4	usermetric: add initial user-facing metrics ... This commit adds a new usermetric package and wires up metrics across the tailscale client. Updates tailscale/corp#22075 Co-authored-by: Anton Tolchanov <anton@tailscale.com> Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>	4 weeks ago
James Tucker	8af50fa97c	ipn/ipnlocal: update routes on link change with ExitNodeAllowLANAccess ... On a major link change the LAN routes may change, so on linkChange where ChangeDelta.Major, we need to call authReconfig to ensure that new routes are observed and applied. Updates tailscale/corp#22574 Signed-off-by: James Tucker <james@tailscale.com>	4 weeks ago
Jordan Whited	641693d61c	ipn/ipnlocal: install IPv6 service addr route (#13252) ... This is the equivalent of quad-100, but for IPv6. This is technically already contained in the Tailscale IPv6 ULA prefix, but that is only installed when remote peers are visible via control with contained addrs. The service addr should always be reachable. Updates #1152 Signed-off-by: Jordan Whited <jordan@tailscale.com>	4 weeks ago
Brad Fitzpatrick	e54c81d1d0	types/views: add Slice.All iterator ... And convert a few callers as an example, but nowhere near all. Updates #12912 Change-Id: I5eaa12a29a6cd03b58d6f1072bd27bc0467852f2 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	4 weeks ago
Percy Wegmann	4637ac732e	ipn/ipnlocal: remember last notified taildrive shares and only notify if they've changed ... Fixes #13195 Signed-off-by: Percy Wegmann <percy@tailscale.com>	4 weeks ago
Anton Tolchanov	151b77f9d6	cmd/tl-longchain: tool to re-sign nodes with long rotation signatures ... In Tailnet Lock, there is an implicit limit on the number of rotation signatures that can be chained before the signature becomes too long. This program helps tailnet admins to identify nodes that have signatures with long chains and prints commands to re-sign those node keys with a fresh direct signature. It's a temporary mitigation measure, and we will remove this tool as we design and implement a long-term approach for rotation signatures. Example output: ``` 2024/08/20 18:25:03 Self: does not need re-signing 2024/08/20 18:25:03 Visible peers with valid signatures: 2024/08/20 18:25:03 Peer xxx2.yy.ts.net. (100.77.192.34) nodeid=nyDmhiZiGA11KTM59, current signature kind=direct: does not need re-signing 2024/08/20 18:25:03 Peer xxx3.yy.ts.net. (100.84.248.22) nodeid=ndQ64mDnaB11KTM59, current signature kind=direct: does not need re-signing 2024/08/20 18:25:03 Peer xxx4.yy.ts.net. (100.85.253.53) nodeid=nmZfVygzkB21KTM59, current signature kind=rotation: chain length 4, printing command to re-sign tailscale lock sign nodekey:530bddbfbe69e91fe15758a1d6ead5337aa6307e55ac92dafad3794f8b3fc661 tlpub:4bf07597336703395f2149dce88e7c50dd8694ab5bbde3d7c2a1c7b3e231a3c2 ``` To support this, the NetworkLockStatus localapi response now includes information about signatures of all peers rather than just the invalid ones. This is not displayed by default in `tailscale lock status`, but will be surfaced in `tailscale lock status --json`. Updates #13185 Signed-off-by: Anton Tolchanov <anton@tailscale.com>	1 month ago
Kristoffer Dalby	01aa01f310	ipn/ipnlocal: network-lock, error if no pubkey instead of panic ... Updates tailscale/corp#20931 Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>	1 month ago
Andrea Gottardo	9d2b1820f1	ipnlocal: support setting authkey at login using syspolicy (#13061) ... Updates tailscale/corp#22120 Adds the ability to start the backend by reading an authkey stored in the syspolicy database (MDM). This is useful for devices that are provisioned in an unattended fashion. Signed-off-by: Andrea Gottardo <andrea@gottardo.me>	1 month ago
Percy Wegmann	74b9fa1348	ipn/localapi: only flush relevant data in multiFilePostResponseWriter.Flush() ... This prevents two things: 1. Crashing if there's no response body 2. Sending a nonsensical 0 response status code Updates tailscale/corp#22357 Signed-off-by: Percy Wegmann <percy@tailscale.com>	1 month ago
Brad Fitzpatrick	4c2e978f1e	cmd/tailscale/cli: support passing network lock keys via files ... Fixes tailscale/corp#22356 Change-Id: I959efae716a22bcf582c20d261fb1b57bacf6dd9 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	1 month ago
Naman Sood	f79183dac7	cmd/tsidp: add funnel support (#12591) ... * cmd/tsidp: add funnel support Updates #10263. Signed-off-by: Naman Sood <mail@nsood.in> * look past funnel-ingress-node to see who we're authenticating Signed-off-by: Naman Sood <mail@nsood.in> * fix comment typo Signed-off-by: Naman Sood <mail@nsood.in> * address review feedback, support Basic auth for /token Turns out you need to support Basic auth if you do client ID/secret according to OAuth. Signed-off-by: Naman Sood <mail@nsood.in> * fix typos Signed-off-by: Naman Sood <mail@nsood.in> * review fixes Signed-off-by: Naman Sood <mail@nsood.in> * remove debugging log Signed-off-by: Naman Sood <mail@nsood.in> * add comments, fix header Signed-off-by: Naman Sood <mail@nsood.in> --------- Signed-off-by: Naman Sood <mail@nsood.in>	1 month ago
Andrea Gottardo	949b15d858	net/captivedetection: call SetHealthy once connectivity restored (#12974) ... Fixes tailscale/tailscale#12973 Updates tailscale/tailscale#1634 There was a logic issue in the captive detection code we shipped in https://github.com/tailscale/tailscale/pull/12707. Assume a captive portal has been detected, and the user notified. Upon switching to another Wi-Fi that does *not* have a captive portal, we were issuing a signal to interrupt any pending captive detection attempt. However, we were not also setting the `captive-portal-detected` warnable to healthy. The result was that any "captive portal detected" alert would not be cleared from the UI. Also fixes a broken log statement value. Signed-off-by: Andrea Gottardo <andrea@gottardo.me>	2 months ago
Andrea Gottardo	90be06bd5b	health: introduce captive-portal-detected Warnable (#12707) ... Updates tailscale/tailscale#1634 This PR introduces a new `captive-portal-detected` Warnable which is set to an unhealthy state whenever a captive portal is detected on the local network, preventing Tailscale from connecting. ipn/ipnlocal: fix captive portal loop shutdown Change-Id: I7cafdbce68463a16260091bcec1741501a070c95 net/captivedetection: fix mutex misuse ipn/ipnlocal: ensure that we don't fail to start the timer Change-Id: I3e43fb19264d793e8707c5031c0898e48e3e7465 Signed-off-by: Andrew Dunham <andrew@du.nham.ca> Signed-off-by: Andrea Gottardo <andrea@gottardo.me>	2 months ago
Irbe Krumina	57856fc0d5	ipn,wgengine/magicsock: allow setting static node endpoints via tailscaled configfile (#12882) ... wgengine/magicsock,ipn: allow setting static node endpoints via tailscaled config file. Adds a new StaticEndpoints field to tailscaled config that can be used to statically configure the endpoints that the node advertizes. This field will replace TS_DEBUG_PRETENDPOINTS env var that can be used to achieve the same. Additionally adds some functionality that ensures that endpoints are updated when configfile is reloaded. Also, refactor configuring/reconfiguring components to use the same functionality when configfile is parsed the first time or subsequent times (after reload). Previously a configfile reload did not result in resetting of prefs. Now it does- but does not yet tell the relevant components to consume the new prefs. This is to be done in a follow-up. Updates tailscale/tailscale#12578 Signed-off-by: Irbe Krumina <irbe@tailscale.com>	2 months ago
Andrew Lytvynov	e7bf6e716b	cmd/tailscale: add --min-validity flag to the cert command (#12822) ... Some users run "tailscale cert" in a cron job to renew their certificates on disk. The time until the next cron job run may be long enough for the old cert to expire with our default heristics. Add a `--min-validity` flag which ensures that the returned cert is valid for at least the provided duration (unless it's longer than the cert lifetime set by Let's Encrypt). Updates #8725 Signed-off-by: Andrew Lytvynov <awly@tailscale.com>	2 months ago
Adrian Dewhurst	54f58d1143	ipn/ipnlocal: add comment explaining auto exit node migration ... Updates tailscale/corp#19681 Change-Id: I6d396780b058ff0fbea0e9e53100f04ef3b76339 Signed-off-by: Adrian Dewhurst <adrian@tailscale.com>	2 months ago
Adrian Dewhurst	8882c6b730	ipn/ipnlocal: wait for DERP before auto exit node migration ... Updates tailscale/corp#19681 Change-Id: I31dec154aa3b5edba01f10eec37640f631729cb2 Signed-off-by: Adrian Dewhurst <adrian@tailscale.com>	2 months ago
Adrian Dewhurst	0834712c91	ipn: allow FQDN in exit node selection ... To match the format of exit node suggestions and ensure that the result is not ambiguous, relax exit node CLI selection to permit using a FQDN including the trailing dot. Updates #12618 Change-Id: I04b9b36d2743154aa42f2789149b2733f8555d3f Signed-off-by: Adrian Dewhurst <adrian@tailscale.com>	2 months ago
Anton Tolchanov	5d61d1c7b0	log/sockstatlog: don't block for more than 5s on shutdown ... Fixes tailscale/corp#21618 Signed-off-by: Anton Tolchanov <anton@tailscale.com>	2 months ago
Claire Wang	49bf63cdd0	ipn/ipnlocal: check for offline auto exit node in SetControlClientStatus (#12772) ... Updates tailscale/corp#19681 Signed-off-by: Claire Wang <claire@tailscale.com>	2 months ago
Nick Khyl	fc28c8e7f3	cmd/cloner, cmd/viewer, util/codegen: add support for generic types and interfaces ... This adds support for generic types and interfaces to our cloner and viewer codegens. It updates these packages to determine whether to make shallow or deep copies based on the type parameter constraints. Additionally, if a template parameter or an interface type has View() and Clone() methods, we'll use them for getters and the cloner of the owning structure. Updates #12736 Signed-off-by: Nick Khyl <nickk@tailscale.com>	2 months ago
Anton Tolchanov	874972b683	posture: add network hardware addresses to posture identity ... If an optional `hwaddrs` URL parameter is present, add network interface hardware addresses to the posture identity response. Just like with serial numbers, this requires client opt-in via MDM or `tailscale set --posture-checking=true` (https://tailscale.com/kb/1326/device-identity) Updates tailscale/corp#21371 Signed-off-by: Anton Tolchanov <anton@tailscale.com>	2 months ago
Brad Fitzpatrick	c6af5bbfe8	all: add test for package comments, fix, add comments as needed ... Updates #cleanup Change-Id: Ic4304e909d2131a95a38b26911f49e7b1729aaef Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 months ago
Andrew Lytvynov	7b1c764088	ipn/ipnlocal: gate systemd-run flags on systemd version (#12747) ... We added a workaround for --wait, but didn't confirm the other flags, which were added in systemd 235 and 236. Check systemd version for deciding when to set all 3 flags. Fixes #12136 Signed-off-by: Andrew Lytvynov <awly@tailscale.com>	2 months ago
Andrew Lytvynov	b8af91403d	clientupdate: return true for CanAutoUpdate for macsys (#12746) ... While `clientupdate.Updater` won't be able to apply updates on macsys, we use `clientupdate.CanAutoUpdate` to gate the EditPrefs endpoint in localAPI. We should allow the GUI client to set AutoUpdate.Apply on macsys for it to properly get reported to the control plane. This also allows the tailnet-wide default for auto-updates to propagate to macsys clients. Updates https://github.com/tailscale/corp/issues/21339 Signed-off-by: Andrew Lytvynov <awly@tailscale.com>	2 months ago
Claire Wang	8965e87fa8	ipn/ipnlocal: handle auto value for ExitNodeID syspolicy (#12512) ... Updates tailscale/corp#19681 Signed-off-by: Claire Wang <claire@tailscale.com>	3 months ago
Anton Tolchanov	781f79408d	ipn/ipnlocal: allow multiple signature chains from the same SigCredential ... Detection of duplicate Network Lock signature chains added in 01847e0123 failed to account for chains originating with a SigCredential signature, which is used for wrapped auth keys. This results in erroneous removal of signatures that originate from the same re-usable auth key. This change ensures that multiple nodes created by the same re-usable auth key are not getting filtered out by the network lock. Updates tailscale/corp#19764 Signed-off-by: Anton Tolchanov <anton@tailscale.com>	3 months ago
Anton Tolchanov	4651827f20	tka: test SigCredential signatures and netmap filtering ... This change moves handling of wrapped auth keys to the `tka` package and adds a test covering auth key originating signatures (SigCredential) in netmap. Updates tailscale/corp#19764 Signed-off-by: Anton Tolchanov <anton@tailscale.com>	3 months ago
Adrian Dewhurst	8f7588900a	ipn/ipnlocal: fix nil pointer dereference and add related test ... Fixes #12644 Change-Id: I3589b01a9c671937192caaedbb1312fd906ca712 Signed-off-by: Adrian Dewhurst <adrian@tailscale.com>	3 months ago
Andrew Lytvynov	2064dc20d4	health,ipn/ipnlocal: hide update warning when auto-updates are enabled (#12631) ... When auto-udpates are enabled, we don't need to nag users to update after a new release, before we release auto-updates. Updates https://github.com/tailscale/corp/issues/20081 Signed-off-by: Andrew Lytvynov <awly@tailscale.com>	3 months ago
Josh McKinney	1d6ab9f9db	cmd/serve: don't convert localhost to 127.0.0.1 ... This is not valid in many situations, specifically when running a local astro site that listens on localhost, but ignores 127.0.0.1 Fixes: https://github.com/tailscale/tailscale/issues/12201 Signed-off-by: Josh McKinney <joshka@users.noreply.github.com>	3 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	3 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>	3 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	3 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>	3 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>	3 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>	3 months ago
Andrew Dunham	45d2f4301f	proxymap, various: distinguish between different protocols ... Previously, we were registering TCP and UDP connections in the same map, which could result in erroneously removing a mapping if one of the two connections completes while the other one is still active. Add a "proto string" argument to these functions to avoid this. Additionally, take the "proto" argument in LocalAPI, and plumb that through from the CLI and add a new LocalClient method. Updates tailscale/corp#20600 Signed-off-by: Andrew Dunham <andrew@du.nham.ca> Change-Id: I35d5efaefdfbf4721e315b8ca123f0c8af9125fb	3 months ago
Brad Fitzpatrick	86e0f9b912	net/ipset, wgengine/filter/filtertype: add split-out packages ... This moves NewContainsIPFunc from tsaddr to new ipset package. And wgengine/filter types gets split into wgengine/filter/filtertype, so netmap (and thus the CLI, etc) doesn't need to bring in ipset, bart, etc. Then add a test making sure the CLI deps don't regress. Updates #1278 Change-Id: Ia246d6d9502bbefbdeacc4aef1bed9c8b24f54d5 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 months ago
Maisem Ali	491483d599	cmd/viewer,type/views: add MapSlice for maps of slices ... This abstraction provides a nicer way to work with maps of slices without having to write out three long type params. This also allows it to provide an AsMap implementation which copies the map and the slices at least. Updates tailscale/corp#20910 Signed-off-by: Maisem Ali <maisem@tailscale.com>	3 months ago
Andrea Gottardo	a8ee83e2c5	health: begin work to use structured health warnings instead of strings, pipe changes into ipn.Notify (#12406) ... Updates tailscale/tailscale#4136 This PR is the first round of work to move from encoding health warnings as strings and use structured data instead. The current health package revolves around the idea of Subsystems. Each subsystem can have (or not have) a Go error associated with it. The overall health of the backend is given by the concatenation of all these errors. This PR polishes the concept of Warnable introduced by @bradfitz a few weeks ago. Each Warnable is a component of the backend (for instance, things like 'dns' or 'magicsock' are Warnables). Each Warnable has a unique identifying code. A Warnable is an entity we can warn the user about, by setting (or unsetting) a WarningState for it. Warnables have: - an identifying Code, so that the GUI can track them as their WarningStates come and go - a Title, which the GUIs can use to tell the user what component of the backend is broken - a Text, which is a function that is called with a set of Args to generate a more detailed error message to explain the unhappy state Additionally, this PR also begins to send Warnables and their WarningStates through LocalAPI to the clients, using ipn.Notify messages. An ipn.Notify is only issued when a warning is added or removed from the Tracker. In a next PR, we'll get rid of subsystems entirely, and we'll start using structured warnings for all errors affecting the backend functionality. Signed-off-by: Andrea Gottardo <andrea@gottardo.me>	3 months ago
Brad Fitzpatrick	6908fb0de3	ipn/localapi,client/tailscale,cmd/derper: add WhoIs lookup by nodekey, use in derper ... Fixes #12465 Change-Id: I9b7c87315a3d2b2ecae2b8db9e94b4f5a1eef74a Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 months ago
Irbe Krumina	bc53ebd4a0	ipn/{ipnlocal,localapi},net/netkernelconf,client/tailscale,cmd/containerboot: optionally enable UDP GRO forwarding for containers (#12410) ... Add a new TS_EXPERIMENTAL_ENABLE_FORWARDING_OPTIMIZATIONS env var that can be set for tailscale/tailscale container running as a subnet router or exit node to enable UDP GRO forwarding for improved performance. See https://tailscale.com/kb/1320/performance-best-practices#linux-optimizations-for-subnet-routers-and-exit-nodes This is currently considered an experimental approach; the configuration support is partially to allow further experimentation with containerized environments to evaluate the performance improvements. Updates tailscale/tailscale#12295 Signed-off-by: Irbe Krumina <irbe@tailscale.com>	3 months ago
Adrian Dewhurst	0219317372	ipn/ipnlocal: improve sticky last suggestion ... The last suggested exit node needs to be incorporated in the decision making process when a new suggestion is requested, but currently it is not quite right: it'll be used if the suggestion code has an error or a netmap is unavailable, but it won't be used otherwise. Instead, this makes the last suggestion into a tiebreaker when making a random selection between equally-good options. If the last suggestion does not make it to the final selection pool, then a different suggestion will be made. Since LocalBackend.SuggestExitNode is back to being a thin shim that sets up the parameters to suggestExitNode, it no longer needs a test. Its test was unable to be comprehensive anyway as the code being tested contains an uncontrolled random number generator. Updates tailscale/corp#19681 Change-Id: I94ecc9a0d1b622de3df4ef90523f1d3e67b4bfba Signed-off-by: Adrian Dewhurst <adrian@tailscale.com>	4 months ago
Andrew Lytvynov	7a7e314096	ipn/ipnlocal,clientupdate: allow auto-updates in contaienrs (#12391) ... We assume most containers are immutable and don't expect tailscale running in them to auto-update. But there's no reason to prohibit it outright. Ignore the tailnet-wide default auto-update setting in containers, but allow local users to turn on auto-updates via the CLI. RELNOTE=Auto-updates are allowed in containers, but ignore the tailnet-wide default. Fixes #12292 Signed-off-by: Andrew Lytvynov <awly@tailscale.com>	4 months ago
Andrew Dunham	e88a5dbc92	various: fix lint warnings ... Some lint warnings caught by running 'make lint' locally. Updates #cleanup Signed-off-by: Andrew Dunham <andrew@du.nham.ca> Change-Id: I1534ed6f2f5e1eb029658906f9d62607dad98ca3	4 months ago
Maisem Ali	4a8cb1d9f3	all: use math/rand/v2 more ... Updates #11058 Signed-off-by: Maisem Ali <maisem@tailscale.com>	4 months ago