And don't make guests under vnet/natlab upload to logcatcher,
as there won't be a valid cert anyway.
Updates #13038
Change-Id: Ie1ce0139788036b8ecc1804549a9b5d326c5fef5
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
It seems some security software or macOS itself might be MITMing TLS
(for ScreenTime?), so don't warn unless it fails x509 validation
against system roots.
Updates #3198
Change-Id: I6ea381b5bb6385b3d51da4a1468c0d803236b7bf
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
All wasi* are GOARCH wasm, so check that instead.
Updates #12732
Change-Id: Id3cc346295c1641bcf80a6c5eb1ad65488509656
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
... and then do approximately nothing with that information, other
than a big TODO. This is mostly me relearning this code and leaving
breadcrumbs for others in the future.
Updates #12724
Signed-off-by: Brad Fitzpatrick <brad@danga.com>
If we get an non-disco presumably-wireguard-encrypted UDP packet from
an IP:port we don't recognize, rather than drop the packet, give it to
WireGuard anyway and let WireGuard try to figure out who it's from and
tell us.
This uses the new hook added in https://github.com/tailscale/wireguard-go/pull/27
Updates tailscale/corp#20732
Change-Id: I5c61a40143810592f9efac6c12808a87f924ecf2
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
For testing. Lee wants to play with 'AWS Global Accelerator Custom
Routing with Amazon Elastic Kubernetes Service'. If this works well
enough, we can promote it.
Updates #12578
Change-Id: I5018347ed46c15c9709910717d27305d0aedf8f4
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
The DERP Return Path Optimization (DRPO) is over four years old (and
on by default for over two) and we haven't had problems, so time to
remove the emergency shutoff code (controlknob) which we've never
used. The controlknobs are only meant for new features, to mitigate
risk. But we don't want to keep them forever, as they kinda pollute
the code.
Updates #150
Change-Id: If021bc8fd1b51006d8bddd1ffab639bb1abb0ad1
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
And fix up a bogus comment and flesh out some other comments.
Updates #cleanup
Change-Id: Ia60a1c04b0f5e44e8d9587914af819df8e8f442a
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Fix regression from #8108 (Mar 2023). Since that change, gocross has
always been rebuilt on each run of ./tool/go (gocross-wrapper.sh),
adding ~100ms. (Well, not totally rebuilt; cmd/go's caching still
ends up working fine.)
The problem was $gocross_path was just "gocross", which isn't in my
path (and "." isn't in my $PATH, as it shouldn't be), so this line was
always evaluating to the empty string:
gotver="$($gocross_path gocross-version 2>/dev/null || echo '')"
The ./gocross is fine because of the earlier `cd "$repo_root"`
Updates tailscale/corp#21262
Updates tailscale/corp#21263
Change-Id: I80d25446097a3bb3423490c164352f0b569add5f
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
In hopes it'll be found more.
Updates tailscale/corp#20844
Change-Id: Ic92ee9908f45b88f8770de285f838333f9467465
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
And some misc doc tweaks for idiomatic Go style.
Updates #cleanup
Change-Id: I3ca45f78aaca037f433538b847fd6a9571a2d918
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
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>
PeerPresentFlags was added in 5ffb2668ef but wasn't plumbed through to
the RunConnectionLoop. Rather than add yet another parameter (as
IP:port was added earlier), pass in the raw PeerPresentMessage and
PeerGoneMessage struct values, which are the same things, plus two
fields: PeerGoneReasonType for gone and the PeerPresentFlags from
5ffb2668ef.
Updates tailscale/corp#17816
Change-Id: Ib19d9f95353651ada90656071fc3656cf58b7987
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
I couldn't convince myself the old way was safe and couldn't lose
writes.
And it seemed too complicated.
Updates tailscale/corp#21104
Change-Id: I17ba7c7d6fd83458a311ac671146a1f6a458a5c1
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
sendMeshUpdates tries to write as much as possible without blocking,
being careful to check the bufio.Writer.Available size before writes.
Except that regressed in 6c791f7d60 which made those messages larger, which
meants we were doing network I/O with the Server mutex held.
Updates tailscale/corp#13945
Change-Id: Ic327071d2e37de262931b9b390cae32084811919
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Fix regression from bd93c3067e where I didn't notice the
32-bit test failure was real and not its usual slowness-related
regression. Yay failure blindness.
Updates #12526
Change-Id: I00e33bba697e2cdb61a0d76a71b62406f6c2eeb9
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
It was hex-ifying the String() form of key.NodePublic, which was already hex.
I noticed in some logs:
"client 6e6f64656b65793a353537353..."
And thought that 6x6x6x6x looked strange. It's "nodekey:" in hex.
Updates tailscale/corp#20844
Change-Id: Ib9f2d63b37e324420b86efaa680668a9b807e465
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
The control plane hasn't sent it to clients in ages.
Updates tailscale/corp#20965
Change-Id: I1d71a4b6dd3f75010a05c544ee39827837c30772
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
I meant to do this in the earlier change and had a git fail.
To atone, add a test too while I'm here.
Updates #12486
Updates #12507
Change-Id: I4943b454a2530cb5047636f37136aa2898d2ffc7
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
I noticed we were allocating these every time when they could just
share the same memory. Rather than document ownership, just lock it
down with a view.
I was considering doing all of the fields but decided to just do this
one first as test to see how infectious it became. Conclusion: not
very.
Updates #cleanup (while working towards tailscale/corp#20514)
Change-Id: I8ce08519de0c9a53f20292adfbecd970fe362de0
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
For pprof cosmetic/confusion reasons more than performance, but it
might have tiny speed benefit.
Updates #12486
Change-Id: I40e03714f3afa3a7e7f5e1fa99b81c7e889b91b6
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
So profiles show more useful names than just func1, func2, func3, etc.
There will still be func1 on them all, but the symbol before will say
what the lookup type is.
Updates #12486
Change-Id: I910b024a7861394eb83d07f5a899eae338cb1f22
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
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>
I noticed the not-local-v6 numbers were nowhere near the v4 numbers
(they should be identical) and then saw this. It meant the
Addr().Next() wasn't picking an IP that was no longer local, as
assumed.
Updates #12486
Change-Id: I18dfb641f00c74c6252666bc41bd2248df15fadd
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
NewContainsIPFunc was previously documented as performing poorly if
there were many netip.Prefixes to search over. As such, we never it used it
in such cases.
This updates it to use bart at a certain threshold (over 6 prefixes,
currently), at which point the bart lookup overhead pays off.
This is currently kinda useless because we're not using it. But now we
can and get wins elsewhere. And we can remove the caveat in the docs.
goos: darwin
goarch: arm64
pkg: tailscale.com/net/tsaddr
│ before │ after │
│ sec/op │ sec/op vs base │
NewContainsIPFunc/empty-8 2.215n ± 11% 2.239n ± 1% +1.08% (p=0.022 n=10)
NewContainsIPFunc/cidr-list-1-8 17.44n ± 0% 17.59n ± 6% +0.89% (p=0.000 n=10)
NewContainsIPFunc/cidr-list-2-8 27.85n ± 0% 28.13n ± 1% +1.01% (p=0.000 n=10)
NewContainsIPFunc/cidr-list-3-8 36.05n ± 0% 36.56n ± 13% +1.41% (p=0.000 n=10)
NewContainsIPFunc/cidr-list-4-8 43.73n ± 0% 44.38n ± 1% +1.50% (p=0.000 n=10)
NewContainsIPFunc/cidr-list-5-8 51.61n ± 2% 51.75n ± 0% ~ (p=0.101 n=10)
NewContainsIPFunc/cidr-list-10-8 95.65n ± 0% 68.92n ± 0% -27.94% (p=0.000 n=10)
NewContainsIPFunc/one-ip-8 4.466n ± 0% 4.469n ± 1% ~ (p=0.491 n=10)
NewContainsIPFunc/two-ip-8 8.002n ± 1% 7.997n ± 4% ~ (p=0.697 n=10)
NewContainsIPFunc/three-ip-8 27.98n ± 1% 27.75n ± 0% -0.82% (p=0.012 n=10)
geomean 19.60n 19.07n -2.71%
Updates #12486
Change-Id: I2e2320cc4384f875f41721374da536bab995c1ce
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
NewContainsIPFunc returns a contains matcher optimized for its
input. Use that instead of what this did before, always doing a test
over each of a list of netip.Prefixes.
goos: darwin
goarch: arm64
pkg: tailscale.com/wgengine/filter
│ before │ after │
│ sec/op │ sec/op vs base │
FilterMatch/file1-8 32.60n ± 1% 18.87n ± 1% -42.12% (p=0.000 n=10)
Updates #12486
Change-Id: I8f902bc064effb431e5b46751115942104ff6531
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
To make it easier for people to monitor their custom DERP fleet.
Updates tailscale/corp#20654
Change-Id: Id8af22936a6d893cc7b6186d298ab794a2672524
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This bug was introduced in e6b84f215 (May 2020) but was only used in
tests when stringifying probeProto values on failure so it wasn't
noticed for a long time.
But then it was moved into non-test code in 8450a18aa (Jun 2024) and I
didn't notice during the code movement that it was wrong. It's still
only used in failure paths in logs, but having wrong/ambiguous
debugging information isn't the best.
Whoops.
Updates tailscale/corp#20654
Change-Id: I296c727ed1c292a04db7b46ecc05c07fc1abc774
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This updates breakglass to use the now-upsteamed
https://github.com/gokrazy/breakglass/pull/18 change
so we're not using our fork now.
It also adds a gok wrapper tool, because doing it by hand
was tedious.
Updates #1866
Change-Id: Ifacbf5fbf0e377b3bd95c5f76c18751c2e1af7d7
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
The derp metrics got out of sync in 74eb99aed1 (2023-03).
They were fixed in 0380cbc90d (2024-05).
This adds some further guardrails (atop the previous fix) to make sure
they don't get out of sync again.
Updates #12288
Change-Id: I809061a81f8ff92f45054d0253bc13871fc71634
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This busybox fwmaskWorks check was added before we moved away from
using the "ip" command to using netlink directly.
So it's now just wasted work (and log spam on Gokrazy) to check the
"ip" command capabilities if we're never going to use it.
Do it lazily instead.
Updates #12277
Change-Id: I8ab9acf64f9c0d8240ce068cb9ec8c0f6b1ecee7
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
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>
Updates #12172 (then need to update other repos)
Change-Id: I439f65e0119b09e00da2ef5c7a4f002f93558578
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
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>
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>
There was a small window in ipnserver after we assigned a LocalBackend
to the ipnserver's atomic but before we Start'ed it where our
initalization Start could conflict with API calls from the LocalAPI.
Simplify that a bit and lay out the rules in the docs.
Updates #12028
Change-Id: Ic5f5e4861e26340599184e20e308e709edec68b1
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
I found this too hard to read before.
This is pulled out of #12033 as it's unrelated cleanup in retrospect.
Updates #12028
Change-Id: I727c47e573217e3d1973c5b66a76748139cf79ee
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
The CLI "up" command is a historical mess, both on the CLI side and
the LocalBackend side. We're getting closer to cleaning it up, but in
the meantime it was again implicated in flaky tests.
In this case, the background goroutine running WatchIPNBus was very
occasionally running enough to get to its StartLoginInteractive call
before the original goroutine did its Start call. That meant
integration tests were very rarely but sometimes logging in with the
default control plane URL out on the internet
(controlplane.tailscale.com) instead of the localhost control server
for tests.
This also might've affected new Headscale etc users on initial "up".
Fixes#11960Fixes#11962
Change-Id: I36f8817b69267a99271b5ee78cb7dbf0fcc0bd34
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
I noticed this while working on the following fix to #11962.
Updates #11962
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Change-Id: I4c5894d8899d1ae8c42f54ecfd4d05a4a7ac598c
set.Of(1, 2, 3) is prettier than set.SetOf([]int{1, 2, 3}).
I was going to change the signature of SetOf but then I noticed its
name has stutter anyway, so I kept it for compatibility. People can
prefer to use set.Of for new code or slowly migrate.
Also add a lazy Make method, which I often find myself wanting,
without having to resort to uglier mak.Set(&set, k, struct{}{}).
Updates #cleanup
Change-Id: Ic6f3870115334efcbd65e79c437de2ad3edb7625
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
While debugging a failing test in airplane mode on macOS, I noticed
netcheck logspam about ICMP socket creation permission denied errors.
Apparently macOS just can't do those, or at least not in airplane
mode. Not worth spamming about.
Updates #cleanup
Change-Id: I302620cfd3c8eabb25202d7eef040c01bd8a843c
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
The netcheck client, when no UDP is available, probes distance using
HTTPS.
Several problems:
* It probes using /derp/latency-check.
* But cmd/derper serves the handler at /derp/probe
* Despite the difference, it work by accident until c8f4dfc8c0
which made netcheck's probe require a 2xx status code.
* in tests, we only use derphttp.Handler, so the cmd/derper-installed
mux routes aren't preesnt, so there's no probe. That breaks
tests in airplane mode. netcheck.Client then reports "unexpected
HTTP status 426" (Upgrade Required)
This makes derp handle both /derp/probe and /derp/latency-check
equivalently, and in both cmd/derper and derphttp.Handler standalone
modes.
I notice this when wgengine/magicsock TestActiveDiscovery was failing
in airplane mode (no wifi). It still doesn't pass, but it gets
further.
Fixes#11989
Change-Id: I45213d4bd137e0f29aac8bd4a9ac92091065113f
Not buying wifi on a short flight is a good way to find tests
that require network. Whoops.
Updates #cleanup
Change-Id: Ibe678e9c755d27269ad7206413ffe9971f07d298
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
In prep for it being required in more places.
Updates #11874
Change-Id: Ib743205fc2a6c6ff3d2c4ed3a2b28cac79156539
Signed-off-by: Brad Fitzpatrick <bradfitz@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>
We had this in a different repo, but moving it here, as this a more
fitting package.
Updates #cleanup
Change-Id: I5fb9b10e465932aeef5841c67deba4d77d473d57
Signed-off-by: Brad Fitzpatrick <bradfitz@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>
This has been a TODO for ages. Time to do it.
The goal is to move more network state accessors to netmon.Monitor
where they can be cheaper/cached.
Updates tailscale/corp#10910
Updates tailscale/corp#18960
Updates #7967
Updates #3299
Change-Id: I60fc6508cd2d8d079260bda371fc08b6318bcaf1
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
