We'd like to use tsdial.Dialer.UserDial instead of SystemDial for DNS over TCP.
This is primarily necessary to properly dial internal DNS servers accessible
over Tailscale and subnet routes. However, to avoid issues when switching
between Wi-Fi and cellular, we need to ensure that we don't retain connections
to any external addresses on the old interface. Therefore, we need to determine
which dialer to use internally based on the configured routes.
This plumbs routes and localRoutes from router.Config to tsdial.Dialer,
and updates UserDial to use either the peer dialer or the system dialer,
depending on the network address and the configured routes.
Updates tailscale/corp#18725
Fixes#4529
Signed-off-by: Nick Khyl <nickk@tailscale.com>
Setting the field after-the-fact wasn't working because we could migrate
prefs on creation, which would set health status for auto updates.
Updates #11986
Signed-off-by: Andrew Dunham <andrew@du.nham.ca>
Change-Id: I41d79ebd61d64829a3a9e70586ce56f62d24ccfd
It's deprecated and using it gets us the old slow behavior
according to https://go.dev/blog/randv2.
> Having eliminated repeatability of the global output stream, Go 1.20
> was also able to make the global generator scale better in programs
> that don’t call rand.Seed, replacing the Go 1 generator with a very
> cheap per-thread wyrand generator already used inside the Go
> runtime. This removed the global mutex and made the top-level
> functions scale much better. Programs that do call rand.Seed fall
> back to the mutex-protected Go 1 generator.
Updates #7123
Change-Id: Ia5452e66bd16b5457d4b1c290a59294545e13291
Signed-off-by: Maisem Ali <maisem@tailscale.com>
In prep for making health warnings rich objects with metadata rather
than a bunch of strings, start moving it all into the same place.
We'll still ultimately need the stringified form for the CLI and
LocalAPI for compatibility but we'll next convert all these warnings
into Warnables that have severity levels and such, and legacy
stringification will just be something each Warnable thing can do.
Updates #4136
Change-Id: I83e189435daae3664135ed53c98627c66e9e53da
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Also, reset it in a few more places (e.g. logout, new blank profiles,
etc.) to avoid a few more cases where a pre-existing dialPlan can cause
a new Headscale server take 10+ seconds to connect.
Updates #11938
Signed-off-by: Andrew Dunham <andrew@du.nham.ca>
Change-Id: I3095173a5a3d9720507afe4452548491e9e45a3e
When switching profile, the server URL can change (e.g.
because of switching to a self-hosted headscale instance).
If it is not reset here, dial plans returned by old
server (e.g. tailscale control server) will be used to
connect to new server (e.g. self-hosted headscale server),
and the register request will be blocked by it until
timeout, leading to very slow profile switches.
Updates #11938 11938
Signed-off-by: Shaw Drastin <showier.drastic0a@icloud.com>
This fixes bugs where after using the cli to set AdvertiseRoutes users
were finding that they had to restart tailscaled before the app
connector would advertise previously learned routes again. And seems
more in line with user expectations.
Fixes#11006
Signed-off-by: Fran Bull <fran@tailscale.com>
When an app connector is reconfigured and domains to route are removed,
we would like to no longer advertise routes that were discovered for
those domains. In order to do this we plan to store which routes were
discovered for which domains.
Add a controlknob so that we can enable/disable the new behavior.
Updates #11008
Signed-off-by: Fran Bull <fran@tailscale.com>
Lays the groundwork for the ability to persist app connectors discovered
routes, which will allow us to stop advertising routes for a domain if
the app connector no longer monitors that domain.
Updates #11008
Signed-off-by: Fran Bull <fran@tailscale.com>
In prep for most of the package funcs in net/interfaces to become
methods in a long-lived netmon.Monitor that can cache things. (Many
of the funcs are very heavy to call regularly, whereas the long-lived
netmon.Monitor can subscribe to things from the OS and remember
answers to questions it's asked regularly later)
Updates tailscale/corp#10910
Updates tailscale/corp#18960
Updates #7967
Updates #3299
Change-Id: Ie4e8dedb70136af2d611b990b865a822cd1797e5
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
... in prep for merging the net/interfaces package into net/netmon.
This is a no-op change that updates a bunch of the API signatures ahead of
a future change to actually move things (and remove the type alias)
Updates tailscale/corp#10910
Updates tailscale/corp#18960
Updates #7967
Updates #3299
Change-Id: I477613388f09389214db0d77ccf24a65bff2199c
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
The goal is to move more network state accessors to netmon.Monitor
where they can be cheaper/cached. But first (this change and others)
we need to make sure the one netmon.Monitor is plumbed everywhere.
Some notable bits:
* tsdial.NewDialer is added, taking a now-required netmon
* because a tsdial.Dialer always has a netmon, anything taking both
a Dialer and a NetMon is now redundant; take only the Dialer and
get the NetMon from that if/when needed.
* netmon.NewStatic is added, primarily for tests
Updates tailscale/corp#10910
Updates tailscale/corp#18960
Updates #7967
Updates #3299
Change-Id: I877f9cb87618c4eb037cee098241d18da9c01691
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Fixestailscale/corp#19558
A request for the suggested exit nodes that occurs too early in the
VPN lifecycle would result in a null deref of the netmap and/or
the netcheck report. This checks both and errors out.
Signed-off-by: Jonathan Nobels <jonathan@tailscale.com>
This adds a health.Tracker to tsd.System, accessible via
a new tsd.System.HealthTracker method.
In the future, that new method will return a tsd.System-specific
HealthTracker, so multiple tsnet.Servers in the same process are
isolated. For now, though, it just always returns the temporary
health.Global value. That permits incremental plumbing over a number
of changes. When the second to last health.Global reference is gone,
then the tsd.System.HealthTracker implementation can return a private
Tracker.
The primary plumbing this does is adding it to LocalBackend and its
dozen and change health calls. A few misc other callers are also
plumbed. Subsequent changes will flesh out other parts of the tree
(magicsock, controlclient, etc).
Updates #11874
Updates #4136
Change-Id: Id51e73cfc8a39110425b6dc19d18b3975eac75ce
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Previously it was both metadata about the class of warnable item as
well as the value.
Now it's only metadata and the value is per-Tracker.
Updates #11874
Updates #4136
Change-Id: Ia1ed1b6c95d34bc5aae36cffdb04279e6ba77015
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This moves most of the health package global variables to a new
`health.Tracker` type.
But then rather than plumbing the Tracker in tsd.System everywhere,
this only goes halfway and makes one new global Tracker
(`health.Global`) that all the existing callers now use.
A future change will eliminate that global.
Updates #11874
Updates #4136
Change-Id: I6ee27e0b2e35f68cb38fecdb3b2dc4c3f2e09d68
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This improves convenience and security.
* Convenience - no need to see nodes that can't share anything with you.
* Security - malicious nodes can't expose shares to peers that aren't
allowed to access their shares.
Updates tailscale/corp#19432
Signed-off-by: Percy Wegmann <percy@tailscale.com>
If seamless key renewal is enabled, we typically do not stop the engine
(deconfigure networking). However, if the node key has expired there is
no point in keeping the connection up, and it might actually prevent
key renewal if auth relies on endpoints routed via app connectors.
Fixestailscale/corp#5800
Signed-off-by: Anton Tolchanov <anton@tailscale.com>
Fixestailscale/corp#19459
This PR adds the ability for users of the syspolicy handler to read string arrays from the MDM solution configured on the system.
Signed-off-by: Andrea Gottardo <andrea@gottardo.me>
Prior to
1613b18f82 (diff-314ba0d799f70c8998940903efb541e511f352b39a9eeeae8d475c921d66c2ac),
nodes could set AutoUpdate.Apply=true on unsupported platforms via
`EditPrefs`. Specifically, this affects tailnets where default
auto-updates are on.
Fix up those invalid prefs on profile reload, as a migration.
Updates #11544
Signed-off-by: Andrew Lytvynov <awly@tailscale.com>
Since we already track active SSH connections, it's not hard to
proactively reject updates until those finish. We attempt to do the same
on the control side, but the detection latency for new connections is in
the minutes, which is not fast enough for common short sessions.
Handle a `force=true` query parameter to override this behavior, so that
control can still trigger an update on a server where some long-running
abandoned SSH session is open.
Updates https://github.com/tailscale/corp/issues/18556
Signed-off-by: Andrew Lytvynov <awly@tailscale.com>
Containers are typically immutable and should be updated as a whole (and
not individual packages within). Deny enablement of auto-updates in
containers.
Also, add the missing check in EditPrefs in LocalAPI, to catch cases
like tailnet default auto-updates getting enabled for nodes that don't
support it.
Updates #11544
Signed-off-by: Andrew Lytvynov <awly@tailscale.com>
peerapi does not want these, but rclone includes them.
Removing them allows rclone to work with Taildrive configured
as a WebDAV remote.
Updates #cleanup
Signed-off-by: Percy Wegmann <percy@tailscale.com>
peerapi does not want these, but rclone includes them.
Stripping them out allows rclone to work with Taildrive configured
as a WebDAV remote.
Updates #cleanup
Signed-off-by: Percy Wegmann <percy@tailscale.com>
Turns out, profileManager is not safe for concurrent use and I missed
all the locking infrastructure in LocalBackend, oops.
I was not able to reproduce the race even with `go test -count 100`, but
this seems like an obvious fix.
Fixes#11773
Signed-off-by: Andrew Lytvynov <awly@tailscale.com>
Updates tailscale/corp#18724
When localAPI clients directly set ExitNodeID to "", the expected behaviour is that the prior exit node also gets zero'd - effectively setting the UI state back to 'no exit node was ever selected'
The IntenalExitNodePrior has been changed to be a non-opaque type, as it is read by the UI to render the users last selected exit node, and must be concrete. Future-us can either break this, or deprecate it and replace it with something more interesting.
Signed-off-by: Jonathan Nobels <jonathan@tailscale.com>
We haven't needed this hack for quite some time Andrea says.
Updates #11649
Change-Id: Ie854b7edd0a01e92495669daa466c7c0d57e7438
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
I'm on a mission to simplify LocalBackend.Start and its locking
and deflake some tests.
I noticed this hasn't been used since March 2023 when it was removed
from the Windows client in corp 66be796d33c.
So, delete.
Updates #11649
Change-Id: I40f2cb75fb3f43baf23558007655f65a8ec5e1b2
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
We have tstest/integration nowadays.
And this test was one of the lone holdouts using the to-be-nuked
SetControlClientGetterForTesting.
Updates #11649
Change-Id: Icf8a6a2e9b8ae1ac534754afa898c00dc0b7623b
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
cc vs ccAuto is a mess. It needs to go. But this is a baby step towards
getting there.
Updates #11649
Change-Id: I34f33934844e580bd823a7d8f2b945cf26c87b3b
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
The new Android app and its libtailscale don't use this anymore;
it uses LocalAPI like other clients now.
Updates #11649
Change-Id: Ic9f42b41e0e0280b82294329093dc6c275f41d50
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This is primarily for GUIs, so they don't need to remember the most
recently used exit node themselves.
This adds some CLI commands, but they're disabled and behind the WIP
envknob, as we need to consider naming (on/off is ambiguous with
running an exit node, etc) as well as automatic exit node selection in
the future. For now the CLI commands are effectively developer debug
things to test the LocalAPI.
Updates tailscale/corp#18724
Change-Id: I9a32b00e3ffbf5b29bfdcad996a4296b5e37be7e
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This names the func() that Once-unlocked LocalBackend.mu. It does so
both for docs and because it can then have a method: Unlock, for the
few points that need to explicitly unlock early (the cause of all this
mess). This makes those ugly points easy to find, and also can then
make them stricter, panicking if the mutex is already unlocked. So a
normal call to the func just once-releases the mutex, returning false
if it's already done, but the Unlock method is the strict one.
Then this uses it more, so most the b.mu.Unlock calls remaining are
simple cases and usually defers.
Updates #11649
Change-Id: Ia070db66c54a55e59d2f76fdc26316abf0dd4627
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
