This commit does not change the order or meaning of any eventbus activity, it
only updates the way the plumbing is set up.
Updates #15160
Change-Id: I06860ac4e43952a9bb4d85366138c9d9a17fd9cd
Signed-off-by: M. J. Fromberger <fromberger@tailscale.com>
We never implemented the peercred package on OpenBSD (and I just tried
again and failed), but we've always documented that the creds pointer
can be nil for operating systems where we can't map the unix socket
back to its UID. On those platforms, we set the default unix socket
permissions such that only the admin can open it anyway and we don't
have a read-only vs read-write distinction. OpenBSD was always in that
camp, where any access to Tailscale's unix socket meant full access.
But during some refactoring, we broke OpenBSD in that we started
assuming during one logging path (during login) that Creds was non-nil
when looking up an ipnauth.Actor's username, which wasn't relevant (it
was called from a function "maybeUsernameOf" anyway, which threw away
errors).
Verified on an OpenBSD VM. We don't have any OpenBSD integration tests yet.
Fixes#17209
Updates #17221
Change-Id: I473c5903dfaa645694bcc75e7f5d484f3dd6044d
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This commit does not change the order or meaning of any eventbus activity, it
only updates the way the plumbing is set up.
Updates #15160
Change-Id: I0a175e67e867459daaedba0731bf68bd331e5ebc
Signed-off-by: M. J. Fromberger <fromberger@tailscale.com>
Expand TestRedactNetmapPrivateKeys to cover all sub-structs of
NetworkMap and confirm that a) all fields are annotated as private or
public, and b) all private fields are getting redacted.
Updates tailscale/corp#32095
Signed-off-by: Anton Tolchanov <anton@tailscale.com>
For debugging purposes, add a new C2N endpoint returning the current
netmap. Optionally, coordination server can send a new "candidate" map
response, which the client will generate a separate netmap for.
Coordination server can later compare two netmaps, detecting unexpected
changes to the client state.
Updates tailscale/corp#32095
Signed-off-by: Anton Tolchanov <anton@tailscale.com>
Previously, seamless key renewal was an opt-in feature. Customers had
to set a `seamless-key-renewal` node attribute in their policy file.
This patch enables seamless key renewal by default for all clients.
It includes a `disable-seamless-key-renewal` node attribute we can set
in Control, so we can manage the rollout and disable the feature for
clients with known bugs. This new attribute makes the feature opt-out.
Updates tailscale/corp#31479
Signed-off-by: Alex Chan <alexc@tailscale.com>
This makes things work slightly better over the eventbus.
Also switches ipnlocal to use the event over the eventbus instead of the
direct callback.
Updates #15160
Signed-off-by: Claus Lensbøl <claus@tailscale.com>
I'd started to do this in the earlier ts_omit_server PR but
decided to split it into this separate PR.
Updates #17128
Change-Id: Ief8823a78d1f7bbb79e64a5cab30a7d0a5d6ff4b
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Instead of waiting for a designated subscription to close as a canary for the
bus being stopped, use the bus Client's own signal for closure added in #17118.
Updates #cleanup
Change-Id: I384ea39f3f1f6a030a6282356f7b5bdcdf8d7102
Signed-off-by: M. J. Fromberger <fromberger@tailscale.com>
The Tracker was using direct callbacks to ipnlocal. This PR moves those
to be triggered via the eventbus.
Additionally, the eventbus is now closed on exit from tailscaled
explicitly, and health is now a SubSystem in tsd.
Updates #15160
Signed-off-by: Claus Lensbøl <claus@tailscale.com>
This is a small introduction of the eventbus into controlclient that
communicates with mainly ipnlocal. While ipnlocal is a complicated part
of the codebase, the subscribers here are from the perspective of
ipnlocal already called async.
Updates #15160
Signed-off-by: Claus Lensbøl <claus@tailscale.com>
As of this commit (per the issue), the Taildrive code remains where it
was, but in new files that are protected by the new ts_omit_drive
build tag. Future commits will move it.
Updates #17058
Change-Id: Idf0a51db59e41ae8da6ea2b11d238aefc48b219e
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Before:
$ tailscale ip -4
1.2.3.4
$ tailscale set --exit-node=1.2.3.4
no node found in netmap with IP 1.2.3.4
After:
$ tailscale set --exit-node=1.2.3.4
cannot use 1.2.3.4 as an exit node as it is a local IP address to this machine; did you mean --advertise-exit-node?
The new error message already existed in the code, but would only be
triggered if the backend wasn't running -- which means, in practice,
it would almost never be triggered.
The old error message is technically true, but could be confusing if you
don't know the distinction between "netmap" and "tailnet" -- it could
sound like the exit node isn't part of your tailnet. A node is never in
its own netmap, but it is part of your tailnet.
This error confused me when I was doing some local dev work, and it's
confused customers before (e.g. #7513). Using the more specific error
message should reduce confusion.
Updates #7513
Updates https://github.com/tailscale/corp/issues/23596
Signed-off-by: Alex Chan <alexc@tailscale.com>
Now that we have policytest and the policyclient.Client interface, we
can de-global-ify many of the tests, letting them run concurrently
with each other, and just removing global variable complexity.
This does ~half of the LocalBackend ones.
Updates #16998
Change-Id: Iece754e1ef4e49744ccd967fa83629d0dca6f66a
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This is step 4 of making syspolicy a build-time feature.
This adds a policyclient.Get() accessor to return the correct
implementation to use: either the real one, or the no-op one. (A third
type, a static one for testing, also exists, so in general a
policyclient.Client should be plumbed around and not always fetched
via policyclient.Get whenever possible, especially if tests need to use
alternate syspolicy)
Updates #16998
Updates #12614
Change-Id: Iaf19670744a596d5918acfa744f5db4564272978
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Step 4 of N. See earlier commits in the series (via the issue) for the
plan.
This adds the missing methods to policyclient.Client and then uses it
everywhere in ipn/ipnlocal and locks it in with a new dep test.
Still plenty of users of the global syspolicy elsewhere in the tree,
but this is a lot of them.
Updates #16998
Updates #12614
Change-Id: I25b136539ae1eedbcba80124de842970db0ca314
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This is step 2 of ~4, breaking up #14720 into reviewable chunks, with
the aim to make syspolicy be a build-time configurable feature.
Step 1 was #16984.
In this second step, the util/syspolicy/policyclient package is added
with the policyclient.Client interface. This is the interface that's
always present (regardless of build tags), and is what code around the
tree uses to ask syspolicy/MDM questions.
There are two implementations of policyclient.Client for now:
1) NoPolicyClient, which only returns default values.
2) the unexported, temporary 'globalSyspolicy', which is implemented
in terms of the global functions we wish to later eliminate.
This then starts to plumb around the policyclient.Client to most callers.
Future changes will plumb it more. When the last of the global func
callers are gone, then we can unexport the global functions and make a
proper policyclient.Client type and constructor in the syspolicy
package, removing the globalSyspolicy impl out of tsd.
The final change will sprinkle build tags in a few more places and
lock it in with dependency tests to make sure the dependencies don't
later creep back in.
Updates #16998
Updates #12614
Change-Id: Ib2c93d15c15c1f2b981464099177cd492d50391c
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This is step 1 of ~3, breaking up #14720 into reviewable chunks, with
the aim to make syspolicy be a build-time configurable feature.
In this first (very noisy) step, all the syspolicy string key
constants move to a new constant-only (code-free) package. This will
make future steps more reviewable, without this movement noise.
There are no code or behavior changes here.
The future steps of this series can be seen in #14720: removing global
funcs from syspolicy resolution and using an interface that's plumbed
around instead. Then adding build tags.
Updates #12614
Change-Id: If73bf2c28b9c9b1a408fe868b0b6a25b03eeabd1
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Extract field comments from AST and include them in generated view
methods. Comments are preserved from the original struct fields to
provide documentation for the view accessors.
Fixes#16958
Signed-off-by: Maisem Ali <3953239+maisem@users.noreply.github.com>
fixestailscale/corp#26369
The suggested exit node is currently only calculated during a localAPI request.
For older UIs, this wasn't a bad choice - we could just fetch it on-demand when a menu
presented itself. For newer incarnations however, this is an always-visible field
that needs to react to changes in the suggested exit node's value.
This change recalculates the suggested exit node ID on netmap updates and
broadcasts it on the IPN bus. The localAPI version of this remains intact for the
time being.
Signed-off-by: Jonathan Nobels <jonathan@tailscale.com>
Pull the lock-bearing code into a closure, and use a clone rather than a
shallow copy of the hostinfo record.
Updates #11649
Change-Id: I4f1d42c42ce45e493b204baae0d50b1cbf82b102
Signed-off-by: M. J. Fromberger <fromberger@tailscale.com>
The early unlock on this branch was required because the "send" method goes on
to acquire the mutex itself. Rather than release the lock just to acquire it
again, call the underlying locked helper directly.
Updates #11649
Change-Id: I50d81864a00150fc41460b7486a9c65655f282f5
Signed-off-by: M. J. Fromberger <fromberger@tailscale.com>
In places where we are locking the LocakBackend and immediately deferring an
unlock, and where there is no shortcut path in the control flow below the
deferral, we do not need the unlockOnce helper. Replace all these with use of
the lock directly.
Updates #11649
Change-Id: I3e6a7110dfc9ec6c1d38d2585c5367a0d4e76514
Signed-off-by: M. J. Fromberger <fromberger@tailscale.com>
Instead of referring to groups, which is a term of art for a different entity,
update the doc comments to more accurately describe what tags are in reference
to the policy document.
Updates #cleanup
Change-Id: Iefff6f84981985f834bae7c6a6c34044f53f2ea2
Signed-off-by: M. J. Fromberger <fromberger@tailscale.com>
There are several methods within the LocalBackend that used an unusual and
error-prone lock discipline whereby they require the caller to hold the backend
mutex on entry, but release it on the way out.
In #11650 we added some support code to make this pattern more visible.
Now it is time to eliminate the pattern (at least within this package).
This is intended to produce no semantic changes, though I am relying on
integration tests and careful inspection to achieve that.
To the extent possible I preserved the existing control flow. In a few places,
however, I replaced this with an unlock/lock closure. This means we will
sometimes reacquire a lock only to release it again one frame up the stack, but
these operations are not performance sensitive and the legibility gain seems
worthwhile.
We can probably also pull some of these out into separate methods, but I did
not do that here so as to avoid other variable scope changes that might be hard
to see. I would like to do some more cleanup separately.
As a follow-up, we could also remove the unlockOnce helper, but I did not do
that here either.
Updates #11649
Change-Id: I4c92d4536eca629cfcd6187528381c33f4d64e20
Signed-off-by: M. J. Fromberger <fromberger@tailscale.com>
Some of the operations of the local API need an event bus to correctly
instantiate other components (notably including the portmapper).
This commit adds that, and as the parameter list is starting to get a bit long
and hard to read, I took the opportunity to move the arguments to a config
type. Only a few call sites needed to be updated and this API is not intended
for general use, so I did not bother to stage the change.
Updates #15160
Updates #16842
Change-Id: I7b057d71161bd859f5acb96e2f878a34c85be0ef
Signed-off-by: M. J. Fromberger <fromberger@tailscale.com>
dnstype.Resolver adds a boolean UseWithExitNode that controls
whether the resolver should be used in tailscale exit node contexts
(not wireguard exit nodes). If UseWithExitNode resolvers are found,
they are installed as the global resolvers. If no UseWithExitNode resolvers
are found, the exit node resolver continues to be installed as the global
resolver. Split DNS Routes referencing UseWithExitNode resolvers are also
installed.
Updates #8237Fixestailscale/corp#30906Fixestailscale/corp#30907
Signed-off-by: Michael Ben-Ami <mzb@tailscale.com>
This adds support for having every viewer type implement
jsonv2.MarshalerTo and jsonv2.UnmarshalerFrom.
This provides a significant boost in performance
as the json package no longer needs to validate
the entirety of the JSON value outputted by MarshalJSON,
nor does it need to identify the boundaries of a JSON value
in order to call UnmarshalJSON.
For deeply nested and recursive MarshalJSON or UnmarshalJSON calls,
this can improve runtime from O(N²) to O(N).
This still references "github.com/go-json-experiment/json"
instead of the experimental "encoding/json/v2" package
now available in Go 1.25 under goexperiment.jsonv2
so that code still builds without the experiment tag.
Of note, the "github.com/go-json-experiment/json" package
aliases the standard library under the right build conditions.
Updates tailscale/corp#791
Signed-off-by: Joe Tsai <joetsai@digital-static.net>
Also adds a test to kube/kubeclient to defend against the error type
returned by the client changing in future.
Fixestailscale/corp#30855
Change-Id: Id11d4295003e66ad5c29a687f1239333c21226a4
Signed-off-by: Tom Proctor <tomhjp@users.noreply.github.com>
In the components where an event bus is already plumbed through, remove the
exceptions that allow it to be omitted, and update all the tests that relied on
those workarounds execute properly.
This change applies only to the places where we're already using the bus; it
does not enforce the existence of a bus in other components (yet),
Updates #15160
Change-Id: Iebb92243caba82b5eb420c49fc3e089a77454f65
Signed-off-by: M. J. Fromberger <fromberger@tailscale.com>
In #16625, I introduced a mechanism for sending the selected exit node
to Control via tailcfg.Hostinfo.ExitNodeID as part of the MapRequest.
@nickkhyl pointed out that LocalBackend.doSetHostinfoFilterServices
needs to be triggered in order to actually send this update. This
patch adds that command. It also prevents the client from sending
"auto:any" in that field, because that’s not a real exit node ID.
This patch also fills in some missing checks in TestConfigureExitNode.
Updates tailscale/corp#30536
Signed-off-by: Simon Law <sfllaw@tailscale.com>
M. J. Fromberger
Brad Fitzpatrick
Anton Tolchanov
Alex Chan
Claus Lensbøl
James Sanderson
nikiUppal-TS
Nick O'Neill
Jonathan Nobels
Alex Chan
Maisem Ali
Jordan Whited
Michael Ben-Ami
Joe Tsai
jishudashu
Tom Proctor
Simon Law