nodeBackend now publishes filter and node changes to eventbus topics
that are consumed by magicsock.Conn
Updates tailscale/corp#27502
Updates tailscale/corp#29543
Signed-off-by: Jordan Whited <jordan@tailscale.com>
We update LocalBackend to shut down the current nodeBackend
when switching to a different node, and to mark the new node's
nodeBackend as ready when the switch completes.
Updates tailscale/corp#28014
Updates tailscale/corp#29543
Updates #12614
Signed-off-by: Nick Khyl <nickk@tailscale.com>
We already present a health warning about this, but it is easy to miss
on a server when blackholing traffic makes it unreachable.
In addition to a health warning, present a risk message when exit node
is enabled.
Example:
```
$ tailscale up --exit-node=lizard
The following issues on your machine will likely make usage of exit nodes impossible:
- interface "ens4" has strict reverse-path filtering enabled
- interface "tailscale0" has strict reverse-path filtering enabled
Please set rp_filter=2 instead of rp_filter=1; see https://github.com/tailscale/tailscale/issues/3310
To skip this warning, use --accept-risk=linux-strict-rp-filter
$
```
Updates #3310
Signed-off-by: Anton Tolchanov <anton@tailscale.com>
This commit fixes the bug that c2n requests are skiped when updating vipServices in serveConfig. This then resulted
netmap update being skipped which caused inaccuracy of Capmap info on client side. After this fix, client always
inform control about it's vipServices config changes.
Fixestailscale/corp#29219
Signed-off-by: KevinLiang10 <37811973+KevinLiang10@users.noreply.github.com>
The field must only be accessed while holding LocalBackend's mutex,
but there are two places where it's accessed without the mutex:
- (LocalBackend).MaybeClearAppConnector()
- handleC2NAppConnectorDomainRoutesGet()
Fixes#16123
Signed-off-by: Nick Khyl <nickk@tailscale.com>
Previously, a missing or invalid `dns` parameter on GET `/dns-query`
returned only “missing ‘dns’ parameter”. Now the error message guides
users to use `?dns=` or `?q=`.
Updates: #16055
Signed-off-by: Zach Buchheit <zachb@tailscale.com>
* control/controlclient,health,tailcfg: refactor control health messages
Updates tailscale/corp#27759
Signed-off-by: James Sanderson <jsanderson@tailscale.com>
Signed-off-by: Paul Scott <408401+icio@users.noreply.github.com>
Co-authored-by: Paul Scott <408401+icio@users.noreply.github.com>
Taildrop wasn't working on iOS since #15971 because GetExt didn't work
until after init, but that PR moved Init until after Start.
This makes GetExt work before LocalBackend.Start (ExtensionHost.Init).
Updates #15812
Change-Id: I6e87257cd97a20f86083a746d39df223e5b6791b
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Currently, LocalBackend/ExtensionHost doesn't invoke the profile change callback for the initial profile.
Since the initial profile may vary depending on loaded extensions and applied policy settings,
it can't be reliably determined until all extensions are initialized. Additionally, some extensions
may asynchronously trigger a switch to the "best" profile (based on system state and policy settings) during
initialization.
We intended to address these issues as part of the ongoing profileManager/LocalBackend refactoring,
but the changes didn't land in time for the v1.84 release and the Taildrop refactoring.
In this PR, we update the Taildrop extension to retrieve the current profile at initialization time
and handle it as a profile change.
We also defer extension initialization until LocalBackend has started, since the Taildrop extension
already relies on this behavior (e.g., it requires clients to call SetDirectFileRoot before Init).
Fixes#15970
Updates #15812
Updates tailscale/corp#28449
Signed-off-by: Nick Khyl <nickk@tailscale.com>
We previously kept these methods in local.go when we started moving node-specific state
from LocalBackend to nodeBackend, to make those changes easier to review. But it's time
to move them to node_backend.go.
Updates #cleanup
Updates #12614
Signed-off-by: Nick Khyl <nickk@tailscale.com>
In this PR, we make the "user-dial-routes" behavior default on all platforms except for iOS and Android.
It can be disabled by setting the TS_DNS_FORWARD_USE_ROUTES envknob to 0 or false.
Updates #12027
Updates #13837
Signed-off-by: Nick Khyl <nickk@tailscale.com>
I'd moved the osshare calls to feature/taildrop hooks, but forgot to
remove them from ipnlocal, or lost them during a rebase.
But then I noticed cmd/tailscaled also had some, so turn those into a
hook.
Updates #12614
Change-Id: I024fb1d27fbcc49c013158882ee5982c2737037d
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This is an integration test that covers all the code in Direct, Auto, and
LocalBackend that processes NetMaps and creates a Filter. The test uses
tsnet as a convenient proxy for setting up all the client pieces correctly,
but is not actually a test specific to tsnet.
Updates tailscale/corp#20514
Signed-off-by: James Sanderson <jsanderson@tailscale.com>
Until we turn on AAAA by default (which might make some people rely on
Happy Eyeballs for targets without IPv6), this lets people turn it on
explicitly if they want.
We still should add a peer cap as well in the future to let a peer
explicitly say that it's cool with IPv6.
Related: #9574
Updates #1813
Updates #1152
Change-Id: Iec6ec9b4b5db7a4dc700ecdf4a11146cc5303989
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Cleanup after #15866. It was using a mix of "b" and "c" before. But "b"
is ambiguous with LocalBackend's usual "b".
Updates #12614
Change-Id: I8c2e84597555ec3db0d783a00ac1c12549ce6706
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
As just discussed on Slack with @nickkhyl.
Updates #12614
Change-Id: I138dd7eaffb274494297567375d969b4122f3f50
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This fixes a refactoring bug introduced in 8b72dd7873
Tests (that failed on this) are coming in a separate change.
Updates #15812
Change-Id: Ibbf461b4eaefe22ad3005fc243d0a918e8af8981
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This fixes the Taildrop deadlock from 8b72dd7873.
Fixes#15824
Change-Id: I5ca583de20dd0d0b513ce546439dc632408ca1f1
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
We update profileManager to allow registering a single state (profile+prefs) change hook.
This is to invert the dependency between the profileManager and the LocalBackend, so that
instead of LocalBackend asking profileManager for the state, we can have profileManager
call LocalBackend when the state changes.
We also update feature.Hook with a new (*feature.Hook).GetOk method to avoid calling both
IsSet and Get.
Updates tailscale/corp#28014
Updates #12614
Signed-off-by: Nick Khyl <nickk@tailscale.com>
This further minimizes the number of places where the profile manager updates the current profile and prefs.
We also document a scenario where an implicit profile switch can occur.
We should be able to address it after (partially?) inverting the dependency between
LocalBackend and profileManager, so that profileManager notifies LocalBackend
of profile changes instead of the other way around.
Updates tailscale/corp#28014
Updates #12614
Signed-off-by: Nick Khyl <nickk@tailscale.com>
We had an ordered set type (set.Slice) already but we occasionally want
to do the same thing with a map, preserving the order things were added,
so add that too, as mapsx.OrderedMap[K, V], and then use in ipnext.
Updates #12614
Change-Id: I85e6f5e11035571a28316441075e952aef9a0863
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Now that 25c4dc5fd7 removed unregistering hooks and made them into
slices, just expose the slices and remove the setter funcs.
This removes boilerplate ceremony around adding new hooks.
This does export the hooks and make them mutable at runtime in theory,
but that'd be a data race. If we really wanted to lock it down in the
future we could make the feature.Hooks slice type be an opaque struct
with an All() iterator and a "frozen" bool and we could freeze all the
hooks after init. But that doesn't seem worth it.
This means that hook registration is also now all in one place, rather
than being mixed into ProfilesService vs ipnext.Host vs FooService vs
BarService. I view that as a feature. When we have a ton of hooks and
the list is long, then we can rearrange the fields in the Hooks struct
as needed, or make sub-structs, or big comments.
Updates #12614
Change-Id: I05ce5baa45a61e79c04591c2043c05f3288d8587
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
These were likely added after everything else was updated to use tsd.NewSystem,
in a feature branch, and before it was merged back into main.
Updates #15160
Signed-off-by: Nick Khyl <nickk@tailscale.com>
Both are populated from the current netmap's MagicDNSSuffix.
But building a full ipnstate.Status (with peers!) is expensive and unnecessary.
Updates #cleanup
Signed-off-by: Nick Khyl <nickk@tailscale.com>
We added this helper in 1e2e319e7d. Remove this copy.
Updates #cleanup
Change-Id: I5b0681acc23692beed35951c9902ac9ceca0a8b9
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This adds a feature/taildrop package, a ts_omit_taildrop build tag,
and starts moving code to feature/taildrop. In some cases, code
remains where it was but is now behind a build tag. Future changes
will move code to an extension and out of LocalBackend, etc.
Updates #12614
Change-Id: Idf96c61144d1a5f707039ceb2ff59c99f5c1642f
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Although, at the moment, we do not yet require an event bus to be present, as
we start to add more pieces we will want to ensure it is always available. Add
a new constructor and replace existing uses of new(tsd.System) throughout.
Update generated files for import changes.
Updates #15160
Change-Id: Ie5460985571ade87b8eac8b416948c7f49f0f64b
Signed-off-by: M. J. Fromberger <fromberger@tailscale.com>
https://github.com/tailscale/tailscale/pull/15395 changed the logic to
skip `EditPrefs` when the platform doesn't support auto-updates. But the
old logic would only fail `EditPrefs` if the auto-update value was
`true`. If it was `false`, `EditPrefs` would succeed and store `false`
in prefs. The new logic will keep the value `unset` even if the tailnet
default is `false`.
Fixes#15691
Signed-off-by: Andrew Lytvynov <awly@tailscale.com>
In this PR, we enable extensions to track changes in the current prefs. These changes can result from a profile switch
or from the user or system modifying the current profile’s prefs. Since some extensions may want to distinguish between
the two events, while others may treat them similarly, we rename the existing profile-change callback to become
a profile-state-change callback and invoke it whenever the current profile or its preferences change. Extensions can still
use the sameNode parameter to distinguish between situations where the profile information, including its preferences,
has been updated but still represents the same tailnet node, and situations where a switch to a different profile has been made.
Having dedicated prefs-change callbacks is being considered, but currently seems redundant. A single profile-state-change callback
is easier to maintain. We’ll revisit the idea of adding a separate callback as we progress on extracting existing features from LocalBackend,
but the conversion to a profile-state-change callback is intended to be permanent.
Finally, we let extensions retrieve the current prefs or profile state (profile info + prefs) at any time using the new
CurrentProfileState and CurrentPrefs methods. We also simplify the NewControlClientCallback signature to exclude
profile prefs. It’s optional, and extensions can retrieve the current prefs themselves if needed.
Updates #12614
Updates tailscale/corp#27645
Updates tailscale/corp#26435
Updates tailscale/corp#27502
Signed-off-by: Nick Khyl <nickk@tailscale.com>
updates tailscale/tailscale#13476
On darwin, os.Hostname is no longer reliable when called
from a sandboxed process. To fix this, we will allow clients
to set an optional callback to query the hostname via an
alternative native API.
We will leave the default implementation as os.Hostname since
this works perfectly well for almost everything besides sandboxed
darwin clients.
Signed-off-by: Jonathan Nobels <jonathan@tailscale.com>
In this PR, we add two methods to facilitate extension lookup by both extensions,
and non-extensions (e.g., PeerAPI or LocalAPI handlers):
- FindExtensionByName returns an extension with the specified name.
It can then be type asserted to a given type.
- FindMatchingExtension is like errors.As, but for extensions.
It returns the first extension that matches the target type (either a specific extension
or an interface).
Updates tailscale/corp#27645
Updates tailscale/corp#27502
Signed-off-by: Nick Khyl <nickk@tailscale.com>
Jordan Whited
Anton Tolchanov
Juan Francisco Cantero Hurtado
Percy Wegmann
Nick Khyl
James Sanderson
KevinLiang10
Zach Buchheit
Brad Fitzpatrick
Jonathan Nobels
David Anderson
M. J. Fromberger
Andrew Lytvynov