tailscale

Commit Graph

Author	SHA1	Message	Date
Brad Fitzpatrick	9f9470fc10	ipnlocal,proxymap,wgengine/netstack: add optional WhoIs/proxymap debug Updates tailscale/corp#20600 Change-Id: I2bb17af0f40603ada1ba4cecc087443e00f9392a Co-authored-by: Maisem Ali <maisem@tailscale.com> Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 months ago
Andrew Dunham	0970615b1b	ipn/ipnlocal: don't program system DNS when node key is expired (#13370 ) This mimics having Tailscale in the 'Stopped' state by programming an empty DNS configuration when the current node key is expired. Updates tailscale/support-escalations#55 Change-Id: I68ff4665761fb621ed57ebf879263c2f4b911610 Signed-off-by: Andrew Dunham <andrew@du.nham.ca>	2 months ago
Andrea Gottardo	d060b3fa02	cli: implement `tailscale dns status` (#13353 ) Updates tailscale/tailscale#13326 This PR begins implementing a `tailscale dns` command group in the Tailscale CLI. It provides an initial implementation of `tailscale dns status` which dumps the state of the internal DNS forwarder. Two new endpoints were added in LocalAPI to support the CLI functionality: - `/netmap`: dumps a copy of the last received network map (because the CLI shouldn't have to listen to the ipn bus for a copy) - `/dns-osconfig`: dumps the OS DNS configuration (this will be very handy for the UI clients as well, as they currently do not display this information) My plan is to implement other subcommands mentioned in tailscale/tailscale#13326, such as `query`, in later PRs. Signed-off-by: Andrea Gottardo <andrea@gottardo.me>	3 months ago
Nick Khyl	5bc9fafab8	ipn/ipnlocal: always send auth URL notifications when a user requests interactive login This PR changes how LocalBackend handles interactive (initiated via StartLoginInteractive) and non-interactive (e.g., due to key expiration) logins, and when it sends the authURL to the connected clients. Specifically, - When a user initiates an interactive login by clicking Log In in the GUI, the LocalAPI calls StartLoginInteractive. If an authURL is available and hasn't expired, we immediately send it to all connected clients, suggesting them to open that URL in a browser. Otherwise, we send a login request to the control plane and set a flag indicating that an interactive login is in progress. - When LocalBackend receives an authURL from the control plane, we check if it differs from the previous one and whether an interactive login is in progress. If either condition is true, we notify all connected clients with the new authURL and reset the interactive login flag. We reset the auth URL and flags upon a successful authentication, when a different user logs in and when switching Tailscale login profiles. Finally, we remove the redundant dedup logic added to WatchNotifications in #12096 and revert the tests to their original state to ensure that calling StartLoginInteractive always produces BrowseToURL notifications, either immediately or when the authURL is received from the control plane. Fixes #13296 Signed-off-by: Nick Khyl <nickk@tailscale.com>	3 months ago
Nick Khyl	959285e0c5	ipn/ipnlocal: fix race condition that results in a panic sending on a closed channel Fixes #13288 Signed-off-by: Nick Khyl <nickk@tailscale.com>	3 months ago
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 months 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 months 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 months 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>	3 months 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>	3 months 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>	3 months 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>	3 months 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>	3 months 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>	3 months 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>	4 months 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>	4 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>	4 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>	4 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>	4 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>	4 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>	4 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>	4 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>	5 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>	5 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>	5 months ago
Brad Fitzpatrick	d5e692f7e7	ipn/ipnlocal: check operator user via osuser package So non-local users (e.g. Kerberos on FreeIPA) on Linux can be looked up. Our default binaries are built with pure Go os/user which only supports the classic /etc/passwd and not any libc-hooked lookups. Updates #12601 Change-Id: I9592db89e6ca58bf972f2dcee7a35fbf44608a4f Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	5 months ago
Brad Fitzpatrick	5ec01bf3ce	wgengine/filter: support FilterRules matching on srcIP node caps [capver 100] See #12542 for background. Updates #12542 Change-Id: Ida312f700affc00d17681dc7551ee9672eeb1789 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	5 months ago
Andrea Gottardo	d6a8fb20e7	health: include DERP region name in bad derp notifications (#12530 ) Fixes tailscale/corp#20971 We added some Warnables for DERP failure situations, but their Text currently spits out the DERP region ID ("10") in the UI, which is super ugly. It would be better to provide the RegionName of the DERP region that is failing. We can do so by storing a reference to the last-known DERP map in the health package whenever we fetch one, and using it when generating the notification text. This way, the following message... > Tailscale could not connect to the relay server '10'. The server might be temporarily unavailable, or your Internet connection might be down. becomes: > Tailscale could not connect to the 'Seattle' relay server. The server might be temporarily unavailable, or your Internet connection might be down. which is a lot more user-friendly. Signed-off-by: Andrea Gottardo <andrea@gottardo.me>	5 months ago
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	5 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>	5 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>	5 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>	5 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>	5 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>	6 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>	6 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>	6 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	6 months ago
Maisem Ali	4a8cb1d9f3	all: use math/rand/v2 more Updates #11058 Signed-off-by: Maisem Ali <maisem@tailscale.com>	6 months ago
Adrian Dewhurst	cf9f507d47	ipn/ipnlocal: only build allowed suggested node list once Rather than building a new suggested exit node set every time, compute it once on first use. Currently, syspolicy ensures that values do not change without a restart anyway. Since the set is being constructed in a separate func now, the test code that manipulates syspolicy can live there, and the TestSuggestExitNode can now run in parallel with other tests because it does not have global dependencies. Updates tailscale/corp#19681 Change-Id: Ic4bb40ccc91b671f9e542bd5ba9c96f942081515 Signed-off-by: Adrian Dewhurst <adrian@tailscale.com>	6 months ago
Andrew Lytvynov	379e2bf189	ipn/ipnlocal: stop offline auto-updates on shutdown (#12342 ) Clean up the updater goroutine on shutdown, in addition to doing that on backend state change. This fixes a goroutine leak on shutdown in tests. Updates #cleanup	6 months ago
Andrew Lytvynov	bc4c8b65c7	ipn/ipnlocal: periodically run auto-updates when "offline" (#12118 ) When the client is disconnected from control for any reason (typically just turned off), we should still attempt to update if auto-updates are enabled. This may help users who turn tailscale on infrequently for accessing resources. RELNOTE: Apply auto-updates even if the node is down or disconnected from the coordination server. Updates #12117 Signed-off-by: Andrew Lytvynov <awly@tailscale.com>	6 months ago
Adrian Dewhurst	3bf2bddbb5	ipn/ipnlocal: improve testability of random node selection In order to test the sticky last suggestion code, a test was written for LocalBackend.SuggestExitNode but it contains a random number generator which makes writing comprehensive tests very difficult. This doesn't change how the last suggestion works, but it adds some infrastructure to make that easier in a later PR. This adds func parameters for the two randomized parts: breaking ties between DERP regions and breaking ties between nodes. This way tests can validate the entire list of tied options, rather than expecting a particular outcome given a particular random seed. As a result of this, the global random number generator can be used rather than seeding a local one each time. In order to see the tied nodes for the location based (i.e. Mullvad) case, pickWeighted needed to return a slice instead of a single arbitrary option, so there is a small change in how that works. Updates tailscale/corp#19681 Change-Id: I83c48a752abdec0f59c58ccfd8bfb3f3f17d0ea8 Signed-off-by: Adrian Dewhurst <adrian@tailscale.com>	6 months ago
Claire Wang	f1d10c12ac	ipn/ipnlocal: allowed suggested exit nodes policy (#12240 ) Updates tailscale/corp#19681 Signed-off-by: Claire Wang <claire@tailscale.com>	6 months ago
Andrew Lytvynov	c9179bc261	various: disable stateful filtering by default (#12197 ) After some analysis, stateful filtering is only necessary in tailnets that use `autogroup:danger-all` in `src` in ACLs. And in those cases users explicitly specify that hosts outside of the tailnet should be able to reach their nodes. To fix local DNS breakage in containers, we disable stateful filtering by default. Updates #12108 Signed-off-by: Andrew Lytvynov <awly@tailscale.com>	6 months ago
Brad Fitzpatrick	964282d34f	ipn,wgengine: remove vestigial Prefs.AllowSingleHosts It was requested by the first customer 4-5 years ago and only used for a brief moment of time. We later added netmap visibility trimming which removes the need for this. It's been hidden by the CLI for quite some time and never documented anywhere else. This keeps the CLI flag, though, out of caution. It just returns an error if it's set to anything but true (its default). Fixes #12058 Change-Id: I7514ba572e7b82519b04ed603ff9f3bdbaecfda7 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	6 months ago
Brad Fitzpatrick	1384c24e41	control/controlclient: delete unused Client.Login Oauth2Token field Updates #12172 (then need to update other repos) Change-Id: I439f65e0119b09e00da2ef5c7a4f002f93558578 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	6 months ago
Brad Fitzpatrick	8aa5c3534d	ipn/ipnlocal: simplify authURL vs authURLSticky, remove interact field The previous LocalBackend & CLI 'up' changes improved some stuff, but might've been too aggressive in some edge cases. This simplifies the authURL vs authURLSticky distinction and removes the interact field, which seemed to just just be about duplicate URL suppression in IPN bus, back from when the IPN bus was a single client at a time. This moves that suppression to a different spot. Fixes #12119 Updates #12028 Updates #12042 Change-Id: I1f8800b1e82ccc1c8a0d7abba559e7404ddf41e4 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	6 months ago
Claire Wang	e070af7414	ipnlocal, magicsock: add more description to storing last suggested exit (#11998 ) node related functions Updates tailscale/corp#19681 Signed-off-by: Claire Wang <claire@tailscale.com>	7 months ago
Anton Tolchanov	6f4a1dc6bf	ipn/ipnlocal: fix another read of keyExpired outside mutex Updates #12039 Signed-off-by: Anton Tolchanov <anton@tailscale.com>	7 months ago
Brad Fitzpatrick	e968b0ecd7	cmd/tailscale,controlclient,ipnlocal: fix 'up', deflake tests more The CLI's "up" is kinda chaotic and LocalBackend.Start is kinda chaotic and they both need to be redone/deleted (respectively), but this fixes some buggy behavior meanwhile. We were previously calling StartLoginInteractive (to start the controlclient's RegisterRequest) redundantly in some cases, causing test flakes depending on timing and up's weird state machine. We only need to call StartLoginInteractive in the client if Start itself doesn't. But Start doesn't tell us that. So cheat a bit and a put the information about whether there's a current NodeKey in the ipn.Status. It used to be accessible over LocalAPI via GetPrefs as a private key but we removed that for security. But a bool is fine. So then only call StartLoginInteractive if that bool is false and don't do it in the WatchIPNBus loop. Fixes #12028 Updates #12042 Change-Id: I0923c3f704a9d6afd825a858eb9a63ca7c1df294 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	7 months ago

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743 Commits (3bee38d50fc1c553643e0dba5168df9401c1efda)