Saves ~94 KB from the min build.
Updates #12614
Change-Id: I3b0b8a47f80b9fd3b1038c2834b60afa55bf02c2
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Before we introduced seamless, the "blocked" state was used to track:
* Whether a login was required for connectivity, and therefore we should
keep the engine deconfigured until that happened
* Whether authentication was in progress
"blocked" would stop authReconfig from running. We want this when a login is
required: if your key has expired we want to deconfigure the engine and keep
it down, so that you don't keep using exit nodes (which won't work because
your key has expired).
Taking the engine down while auth was in progress was undesirable, so we
don't do that with seamless renewal. However, not entering the "blocked"
state meant that we needed to change the logic for when to send
LoginFinished on the IPN bus after seeing StateAuthenticated from the
controlclient. Initially we changed the "if blocked" check to "if blocked or
seamless is enabled" which was correct in other places.
In this place however, it introduced a bug: we are sending LoginFinished
every time we see StateAuthenticated, which happens even on a down & up, or
a profile switch. This in turn made it harder for UI clients to track when
authentication is complete.
Instead we should only send it out if we were blocked (i.e. seamless is
disabled, or our key expired) or an auth was in progress.
Updates tailscale/corp#31476
Updates tailscale/corp#32645
Fixes#17363
Signed-off-by: James Sanderson <jsanderson@tailscale.com>
Saves 45 KB from the min build, no longer pulling in deephash or
util/hashx, both with unsafe code.
It can actually be more efficient to not use deephash, as you don't
have to walk all bytes of all fields recursively to answer that two
things are not equal. Instead, you can just return false at the first
difference you see. And then with views (as we use ~everywhere
nowadays), the cloning the old value isn't expensive, as it's just a
pointer under the hood.
Updates #12614
Change-Id: I7b08616b8a09b3ade454bb5e0ac5672086fe8aec
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Some of the test cases access fields of the backend that are supposed to be
locked while the test is running, which can trigger the race detector. I fixed
a few of these in #17411, but I missed these two cases.
Updates #15160
Updates #17192
Change-Id: I45664d5e34320ecdccd2844e0f8b228145aaf603
Signed-off-by: M. J. Fromberger <fromberger@tailscale.com>
Add subscribers for AppConnector events
Make the RouteAdvertiser interface optional We cannot yet remove it because
the tests still depend on it to verify correctness. We will need to separately
update the test fixtures to remove that dependency.
Publish RouteInfo via the event bus, so we do not need a callback to do that.
Replace it with a flag that indicates whether to treat the route info the connector
has as "definitive" for filtering purposes.
Update the tests to simplify the construction of AppConnector values now that a
store callback is no longer required. Also fix a couple of pre-existing racy tests that
were hidden by not being concurrent in the same way production is.
Updates #15160
Updates #17192
Change-Id: Id39525c0f02184e88feaf0d8a3c05504850e47ee
Signed-off-by: M. J. Fromberger <fromberger@tailscale.com>
If we received a wg engine status while processing an auth URL, there was a
race condition where the authURL could be reset to "" immediately after we
set it.
To fix this we need to check that we are moving from a non-Running state to
a Running state rather than always resetting the URL when we "move" into a
Running state even if that is the current state.
We also need to make sure that we do not return from stopEngineAndWait until
the engine is stopped: before, we would return as soon as we received any
engine status update, but that might have been an update already in-flight
before we asked the engine to stop. Now we wait until we see an update that
is indicative of a stopped engine, or we see that the engine is unblocked
again, which indicates that the engine stopped and then started again while
we were waiting before we checked the state.
Updates #17388
Signed-off-by: James Sanderson <jsanderson@tailscale.com>
Co-authored-by: Nick Khyl <nickk@tailscale.com>
This patch removes some code that didn’t get removed before merging
the changes in #16580.
Updates #cleanup
Updates #16551
Signed-off-by: Simon Law <sfllaw@tailscale.com>
The control plane will sometimes determine that a node is not online,
while the node is still able to connect to its peers. This patch
doesn’t solve this problem, but it does mitigate it.
This PR introduces the `client-side-reachability` node attribute that
switches the node to completely ignore the online signal from control.
In the future, the client itself should collect reachability data from
active Wireguard flows and Tailscale pings.
Updates #17366
Updates tailscale/corp#30379
Updates tailscale/corp#32686
Signed-off-by: Simon Law <sfllaw@tailscale.com>
A recent change (009d702adf) introduced a deadlock where the
/machine/update-health network request to report the client's health
status update to the control plane was moved to being synchronous
within the eventbus's pump machinery.
I started to instead make the health reporting be async, but then we
realized in the three years since we added that, it's barely been used
and doesn't pay for itself, for how many HTTP requests it makes.
Instead, delete it all and replace it with a c2n handler, which
provides much more helpful information.
Fixestailscale/corp#32952
Change-Id: I9e8a5458269ebfdda1c752d7bbb8af2780d71b04
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Saves 262 KB so far. I'm sure I missed some places, but shotizam says
these were the low hanging fruit.
Updates #12614
Change-Id: Ia31c01b454f627e6d0470229aae4e19d615e45e3
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Add and wire up event publishers for these two event types in the AppConnector.
Nothing currently subscribes to them, so this is harmless. Subscribers for
these events will be added in a near-future commit.
As part of this, move the appc.RouteInfo type to the types/appctype package.
It does not contain any package-specific details from appc. Beside it, add
appctype.RouteUpdate to carry route update event state, likewise not specific
to appc. Update all usage of the appc.* types throughout to use appctype.*
instead, and update depaware files to reflect these changes.
Add a Close method to the AppConnector to make sure the client gets cleaned up
when the connector is dropped (we re-create connectors).
Update the unit tests in the appc package to also check the events published
alongside calls to the RouteAdvertiser.
For now the tests still rely on the RouteAdvertiser for correctness; this is OK
for now as the two methods are always performed together. In the near future,
we need to rework the tests so not require that, but that will require building
some more test fixtures that we can handle separately.
Updates #15160
Updates #17192
Change-Id: I184670ba2fb920e0d2cb2be7c6816259bca77afe
Signed-off-by: M. J. Fromberger <fromberger@tailscale.com>
Whenever running on a platform that has a TPM (and tailscaled can access
it), default to encrypting the state. The user can still explicitly set
this flag to disable encryption.
Updates https://github.com/tailscale/corp/issues/32909
Signed-off-by: Andrew Lytvynov <awly@tailscale.com>
Require the presence of the bus, but do not use it yet. Check for required
fields and update tests and production use to plumb the necessary arguments.
Updates #15160
Updates #17192
Change-Id: I8cefd2fdb314ca9945317d3320bd5ea6a92e8dcb
Signed-off-by: M. J. Fromberger <fromberger@tailscale.com>
The callback itself is not removed as it is used in other repos, making
it simpler for those to slowly transition to the eventbus.
Updates #15160
Signed-off-by: Claus Lensbøl <claus@tailscale.com>
Replace the positional arguments to NewAppConnector with a Config struct.
Update the existing uses. Other than the API change, there are no functional
changes in this commit.
Updates #15160
Updates #17192
Change-Id: Ibf37f021372155a4db8aaf738f4b4f2c746bf623
Signed-off-by: M. J. Fromberger <fromberger@tailscale.com>
It never launched and I've lost hope of it launching and it's in my
way now, so I guess it's time to say goodbye.
Updates tailscale/corp#4383
Updates #17305
Change-Id: I2eb551d49f2fb062979cc307f284df4b3dfa5956
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
The `put` callback runs on a different goroutine to the test, so calling
t.Fatalf in put had no effect. `drain` is always called when checking what
was put and is called from the test goroutine, so that's a good place to
fail the test if the channel was too full.
Updates #17363
Signed-off-by: James Sanderson <jsanderson@tailscale.com>
Saves 139 KB.
Also Synology support, which I saw had its own large-ish proxy parsing
support on Linux, but support for proxies without Synology proxy
support is reasonable, so I pulled that out as its own thing.
Updates #12614
Change-Id: I22de285a3def7be77fdcf23e2bec7c83c9655593
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
In Dec 2021 in d3d503d997 I had grand plans to make exit node DNS
cheaper by using HTTP/2 over PeerAPI, at least on some platforms. I
only did server-side support though and never made it to the client.
In the ~4 years since, some things have happened:
* Go 1.24 got support for http.Protocols (https://pkg.go.dev/net/http#Protocols)
and doing UnencryptedHTTP2 ("HTTP2 with prior knowledge")
* The old h2c upgrade mechanism was deprecated; see https://github.com/golang/go/issues/63565
and https://github.com/golang/go/issues/67816
* Go plans to deprecate x/net/http2 and move everything to the standard library.
So this drops our use of the x/net/http2/h2c package and instead
enables h2c (on all platforms now) using the standard library.
This does mean we lose the deprecated h2c Upgrade support, but that's
fine.
If/when we do the h2c client support for ExitDNS, we'll have to probe
the peer to see whether it supports it. Or have it reply with a header
saying that future requests can us h2c. (It's tempting to use capver,
but maybe people will disable that support anyway, so we should
discover it at runtime instead.)
Also do the same in the sessionrecording package.
Updates #17305
Change-Id: If323f5ef32486effb18ed836888aa05c0efb701e
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Saves 328 KB (2.5%) off the minimal binary.
For IoT devices that don't need MagicDNS (e.g. they don't make
outbound connections), this provides a knob to disable all the DNS
functionality.
Rather than a massive refactor today, this uses constant false values
as a deadcode sledgehammer, guided by shotizam to find the largest DNS
functions which survived deadcode.
A future refactor could make it so that the net/dns/resolver and
publicdns packages don't even show up in the import graph (along with
their imports) but really it's already pretty good looking with just
these consts, so it's not at the top of my list to refactor it more
soon.
Also do the same in a few places with the ACME (cert) functionality,
as I saw those while searching for DNS stuff.
Updates #12614
Change-Id: I8e459f595c2fde68ca16503ff61c8ab339871f97
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Allow the user to access information about routes an app connector has
learned, such as how many routes for each domain.
Fixestailscale/corp#32624
Signed-off-by: Fran Bull <fran@tailscale.com>
Removes 434 KB from the minimal Linux binary, or ~3%.
Primarily this comes from not linking in the zstd encoding code.
Fixes#17323
Change-Id: I0a90de307dfa1ad7422db7aa8b1b46c782bfaaf7
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
It has nothing to do with logtail and is confusing named like that.
Updates #cleanup
Updates #17323
Change-Id: Idd34587ba186a2416725f72ffc4c5778b0b9db4a
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
And yay: tsnet (and thus k8s-operator etc) no longer depends on
portlist! And LocalBackend is smaller.
Removes 50 KB from the minimal binary.
Updates #12614
Change-Id: Iee04057053dc39305303e8bd1d9599db8368d926
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
We made changes to ipnext callback registration/unregistration/invocation in #15780
that made resetting b.exthost to a nil, no-op host in (*LocalBackend).Shutdown() unnecessary.
But resetting it is also racy: b.exthost must be safe for concurrent use with or without b.mu held,
so it shouldn't be written after NewLocalBackend returns. This PR removes it.
Fixes#17279
Signed-off-by: Nick Khyl <nickk@tailscale.com>
I think this was originally a brain-o in 9380e2dfc6. It's
disabling the port _poller_, listing what open ports (i.e. services)
are open, not PMP/PCP/UPnP port mapping.
While there, drop in some more testenv.AssertInTest() in a few places.
Updates #cleanup
Change-Id: Ia6f755ad3544f855883b8a7bdcfc066e8649547b
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This exports a number of things from the derp (generic + client) package
to be used by the new derpserver package, as now used by cmd/derper.
And then enough other misc changes to lock in that cmd/tailscaled can
be configured to not bring in tailscale.com/client/local. (The webclient
in particular, even when disabled, was bringing it in, so that's now fixed)
Fixes#17257
Change-Id: I88b6c7958643fb54f386dd900bddf73d2d4d96d5
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Help out the linker's dead code elimination.
Updates #12614
Change-Id: I6c13cb44d3250bf1e3a01ad393c637da4613affb
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This doesn't yet fully pull it out into a feature/captiveportal package.
This is the usual first step, moving the code to its own files within
the same packages.
Updates #17254
Change-Id: Idfaec839debf7c96f51ca6520ce36ccf2f8eec92
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: I06860ac4e43952a9bb4d85366138c9d9a17fd9cd
Signed-off-by: M. J. Fromberger <fromberger@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>
