This patch removes the crappy, half-backed COM initialization used by `go-ole`
and replaces that with the `StartRuntime` function from `wingoes`, a library I
have started which, among other things, initializes COM properly.
In particular, we should always be initializing COM to use the multithreaded
apartment. Every single OS thread in the process becomes implicitly initialized
as part of the MTA, so we do not need to concern ourselves as to whether or not
any particular OS thread has initialized COM. Furthermore, we no longer need to
lock the OS thread when calling methods on COM interfaces.
Single-threaded apartments are designed solely for working with Win32 threads
that have a message pump; any other use of the STA is invalid.
Fixes https://github.com/tailscale/tailscale/issues/3137
Signed-off-by: Aaron Klotz <aaron@tailscale.com>
Centralize the fake GOOS stuff, start to use it more. To be used more
in the future.
Change-Id: Iabacfbeaf5fca0b53bf4d5dbcdc0367f05a205f9
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
We're trying to gut 90% of the ipnserver package. A lot will get
deleted, some will move to LocalBackend, and a lot is being moved into
this new ipn/ipnauth package which will be leaf-y and testable.
This is a baby step towards moving some stuff to ipnauth.
Update #6417
Updates tailscale/corp#8051
Change-Id: I28bc2126764f46597d92a2d72565009dc6927ee0
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This commit implements `tailscale lock log [--limit N]`, which displays an ordered list
of changes to network-lock state in a manner familiar to `git log`.
Signed-off-by: Tom DNetto <tom@tailscale.com>
This uses a go:generate statement to create a bunch of .syso files that
contain a Windows resource file. We check these in since they're less
than 1KiB each, and are only included on Windows.
Fixes#6429
Signed-off-by: Andrew Dunham <andrew@du.nham.ca>
Change-Id: I0512c3c0b2ab9d8d8509cf2037b88b81affcb81f
Current behavior is broken. tailscale serve text / "" returns no error
and shows up in tailscale serve status but requests return a 500
"empty handler".
Adds an error if the user passes in an empty string for the text
handler.
Closes#6405
Signed-off-by: Shayne Sweeney <shayne@tailscale.com>
This sets the "com.apple.quarantine" flag on macOS, and the
"Zone.Identifier" alternate data stream on Windows.
Change-Id: If14f805467b0e2963067937d7f34e08ba1d1fa85
Signed-off-by: Andrew Dunham <andrew@du.nham.ca>
This moves the NetworkLock key from a dedicated StateKey to be part of the persist.Persist struct.
This struct is stored as part for ipn.Prefs and is also the place where we store the NodeKey.
It also moves the ChonkDir from "/tka" to "/tka-profile/<profile-id>". The rename was intentional
to be able to delete the "/tka" dir if it exists.
This means that we will have a unique key per profile, and a unique directory per profile.
Note: `tailscale logout` will delete the entire profile, including any keys. It currently does not
delete the ChonkDir.
Signed-off-by: Maisem Ali <maisem@tailscale.com>
QNAP 5.x works much better if we let Apache proxy
tailscale web, which means the URLs can no longer
be relative since apache sends us an internal
URL. Access QNAP authentication via
http://localhost:8080/ as documented in
https://download.qnap.com/dev/API_QNAP_QTS_Authentication.pdf
Signed-off-by: Denton Gentry <dgentry@tailscale.com>
The key changed, but also we have a localapi method to set it anyway, so
use that.
Updates tailscale/corp#7515
Change-Id: Ia08ea2509f0bdd9b59e4c5de53aacf9a7d7eda36
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Run an inotify goroutine and watch if another program takes over
/etc/inotify.conf. Log if so.
For now this only logs. In the future I want to wire it up into the
health system to warn (visible in "tailscale status", etc) about the
situation, with a short URL to more info about how you should really
be using systemd-resolved if you want programs to not fight over your
DNS files on Linux.
Updates #4254 etc etc
Change-Id: I86ad9125717d266d0e3822d4d847d88da6a0daaa
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Noticed this while debugging something else, we would reset all routes if
either `--advertise-exit-node` or `--advertise-routes` were set. This handles
correctly updating them.
Also added tests.
Signed-off-by: Maisem Ali <maisem@tailscale.com>
The serve CLI doesn't exist yet, but we want nice tests for it when it
does exist.
Updates tailscale/corp#7515
Change-Id: Ib4c73d606242c4228f87410bbfd29bec52ca6c60
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
(I should've done this to start with.)
Updates tailscale/corp#7515
Change-Id: I7fb88cf95772790fd415ecf28fc52bde95507641
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Example output:
# Health check:
# - Some peers are advertising routes but --accept-routes is false
Also, move "tailscale status" health checks to the bottom, where they
won't be lost in large netmaps.
Updates #2053
Updates #6266
Change-Id: I5ae76a0cd69a452ce70063875cd7d974bfeb8f1a
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
If the --key-file output filename ends in ".pfx" or ".p12", use pkcs12
format.
This might not be working entirely correctly yet but might be enough for
others to help out or experiment.
Updates #2928
Updates #5011
Change-Id: I62eb0eeaa293b9fd5e27b97b9bc476c23dd27cf6
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Map is a concurrent safe map that is a trivial wrapper
over a Go map and a sync.RWMutex.
It is optimized for use-cases where the entries change often,
which is the opposite use-case of what sync.Map is optimized for.
The API is patterned off of sync.Map, but made generic.
Signed-off-by: Joe Tsai <joetsai@digital-static.net>
Temporarily at least. Makes sharing scripts during development easier.
Updates tailscale/corp#7515
Change-Id: I0e7aa461accd2c60740c1b37f3492b6bb58f1be3
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
The derpers don't allow whitespace in the challenge.
Change-Id: I93a8b073b846b87854fba127b5c1d80db205f658
Signed-off-by: Andrew Dunham <andrew@tailscale.com>
Leave only the HTTP/auth bits in localapi.
Change-Id: I8e23fb417367f1e0e31483e2982c343ca74086ab
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Only enable forwarding for an IP family if any forwarding is required
for that family.
Fixes#6221.
Signed-off-by: David Anderson <danderson@tailscale.com>
Not for end users (unless directed by support). Mostly for ease of
development for some upcoming webserver work.
Change-Id: I43acfed217514567acb3312367b24d620e739f88
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This is similar to the golang.org/x/tools/internal/fastwalk I'd
previously written but not recursive and using mem.RO.
The metrics package already had some Linux-specific directory reading
code in it. Move that out to a new general package that can be reused
by portlist too, which helps its scanning of all /proc files:
name old time/op new time/op delta
FindProcessNames-8 2.79ms ± 6% 2.45ms ± 7% -12.11% (p=0.000 n=10+10)
name old alloc/op new alloc/op delta
FindProcessNames-8 62.9kB ± 0% 33.5kB ± 0% -46.76% (p=0.000 n=9+10)
name old allocs/op new allocs/op delta
FindProcessNames-8 2.25k ± 0% 0.38k ± 0% -82.98% (p=0.000 n=9+10)
Change-Id: I75db393032c328f12d95c39f71c9742c375f207a
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
The //go:build syntax was introduced in Go 1.17:
https://go.dev/doc/go1.17#build-lines
gofmt has kept the +build and go:build lines in sync since
then, but enough time has passed. Time to remove them.
Done with:
perl -i -npe 's,^// \+build.*\n,,' $(git grep -l -F '+build')
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
It is currently a `ipn.PrefsView` which means when we do a JSON roundtrip,
we go from an invalid Prefs to a valid one.
This makes it a pointer, which fixes the JSON roundtrip.
This was introduced in 0957bc5af2.
Signed-off-by: Maisem Ali <maisem@tailscale.com>
This implements the same functionality as the former run.sh, but in Go
and with a little better awareness of tailscaled's lifecycle.
Also adds TS_AUTH_ONCE, which fixes the unfortunate behavior run.sh had
where it would unconditionally try to reauth every time if you gave it
an authkey, rather than try to use it only if auth is actually needed.
This makes it a bit nicer to deploy these containers in automation, since
you don't have to run the container once, then go and edit its definition
to remove authkeys.
Signed-off-by: David Anderson <danderson@tailscale.com>
To collect some data on how widespread this is and whether there's
any correlation between different versions of Windows, etc.
Updates #4811
Change-Id: I003041d0d7e61d2482acd8155c1a4ed413a2c5c4
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
It was from very early Tailscale and no longer makes sense.
Change-Id: I31b4e728789f26b0376ebe73aa1b4bbbb1d62607
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
* Plumb disablement values through some of the internals of TKA enablement.
* Transmit the node's TKA hash at the end of sync so the control plane understands each node's head.
* Implement /machine/tka/disable RPC to actuate disablement on the control plane.
There is a partner PR for the control server I'll send shortly.
Signed-off-by: Tom DNetto <tom@tailscale.com>
Make "tailscale set" by itself be equivalent to "tailscale set -h"
rather than just say "you did it wrong" and make people do another -h
step.
Change-Id: Iad2b2ddb2595c0121d2536de5b78648f3eded3e3
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Make netlogfmt useful regardless of the exact schema of the input.
If a JSON object looks like a network log message,
then unmarshal it as one and then print it.
This allows netlogfmt to support both a stream of JSON objects
directly serialized from netlogtype.Message, or the schema
returned by the /api/v2/tailnet/{{tailnet}}/network-logs API endpoint.
Signed-off-by: Joe Tsai <joetsai@digital-static.net>
The netlog.Message type is useful to depend on from other packages,
but doing so would transitively cause gvisor and other large packages
to be linked in.
Avoid this problem by moving all network logging types to a single package.
We also update staticcheck to take in:
003d277bcf
Signed-off-by: Joe Tsai <joetsai@digital-static.net>
Saves about 1.4MB from the generated wasm file. The Brotli size is
basically unchanged (it's actually slightly larger, by 40K), suggesting
that most of the size delta is due to not inlining and other changes
that were easily compressible.
However, it still seems worthwhile to have a smaller final binary, to
reduce parse time and increase likelihood that we fit in the browser's
disk cache. Actual performance appears to be unchanged.
Updates #5142
Signed-off-by: Mihai Parparita <mihai@tailscale.com>
Turns out using win32 instead of shelling out to child processes is a
bit faster:
name old time/op new time/op delta
GetListIncremental-4 278ms ± 2% 0ms ± 7% -99.93% (p=0.000 n=8+10)
name old alloc/op new alloc/op delta
GetListIncremental-4 238kB ± 0% 9kB ± 0% -96.12% (p=0.000 n=10+8)
name old allocs/op new allocs/op delta
GetListIncremental-4 1.19k ± 0% 0.02k ± 0% -98.49% (p=0.000 n=10+10)
Fixes#3876 (sadly)
Change-Id: I1195ac5de21a8a8b3cdace5871d263e81aa27e91
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
name old time/op new time/op delta
GetList-8 11.2ms ± 5% 11.1ms ± 3% ~ (p=0.661 n=10+9)
name old alloc/op new alloc/op delta
GetList-8 83.3kB ± 1% 67.4kB ± 1% -19.05% (p=0.000 n=10+10)
name old allocs/op new allocs/op delta
GetList-8 2.89k ± 2% 2.19k ± 1% -24.24% (p=0.000 n=10+10)
(real issue is we're calling this code as much as we are, but easy
enough to make it efficient because it'll still need to be called
sometimes in any case)
Updates #5958
Change-Id: I90c20278d73e80315a840aed1397d24faa308d93
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
The Lufthansa in-flight wifi generates a synthetic 204 response to the
DERP server's /generate_204 endpoint. This PR adds a basic
challenge/response to the endpoint; something sufficiently complicated
that it's unlikely to be implemented by a captive portal. We can then
check for the expected response to verify whether we're being MITM'd.
Follow-up to #5601
Signed-off-by: Andrew Dunham <andrew@du.nham.ca>
Change-Id: I94a68c9a16a7be7290200eea6a549b64f02ff48f
We removed it in #4806 in favor of the built-in functionality from the
nhooyr.io/websocket package. However, it has an issue with deadlines
that has not been fixed yet (see nhooyr/websocket#350). Temporarily
go back to using a custom wrapper (using the fix from our fork) so that
derpers will stop closing connections too aggressively.
Updates #5921
Signed-off-by: Mihai Parparita <mihai@tailscale.com>
Allows UI to display slightly more fine-grained progress when the SSH
connection is being established.
Updates tailscale/corp#7186
Signed-off-by: Mihai Parparita <mihai@tailscale.com>
This package parses a JSON stream of netlog.Message from os.Stdin
and pretty prints the contents as a stream of tables.
It supports reverse lookup of tailscale IP addresses if given
an API key and the tailnet that these traffic logs belong to.
Signed-off-by: Joe Tsai <joetsai@digital-static.net>
This way we can do that once (out of band, in the GitHub action),
instead of increasing the time of each deploy that uses the package.
.wasm is removed from the list of automatically pre-compressed
extensions, an OSS bump and small change on the corp side is needed to
make use of this change.
Signed-off-by: Mihai Parparita <mihai@tailscale.com>
If the wgcfg.Config is specified with network logging arguments,
then Userspace.Reconfig starts up an asynchronous network logger,
which is shutdown either upon Userspace.Close or when Userspace.Reconfig
is called again without network logging or route arguments.
Signed-off-by: Joe Tsai <joetsai@digital-static.net>
If the username includes a suffix of +password, then we accept
password auth and just let them in like it were no auth.
This exists purely for SSH clients that get confused by seeing success
to their initial auth type "none".
Co-authored-by: Maisem Ali <maisem@tailscale.com>
Change-Id: I616d4c64d042449fb164f615012f3bae246e91ec
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
When Tailscale is installed via Homebrew, `/usr/local/bin/tailscaled`
is a symlink to the actual binary.
Now when `tailscaled install-system-daemon` runs, it will not attempt
to overwrite that symlink if it already points to the tailscaled binary.
However, if executed binary and the link target differ, the path will
he overwritten - this can happen when a user decides to replace
Homebrew-installed tailscaled with a one compiled from source code.
Fixes#5353
Signed-off-by: Anton Tolchanov <anton@tailscale.com>
188.166.70.128 port 2222 for now. Some hostname later maybe.
Change-Id: I9c329410035221ed6cdff7a482727d30b77eea8b
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Send two banners with a second in between, this demonstrates the case
where all banners are shown after auth completes and not during.
Signed-off-by: Maisem Ali <maisem@tailscale.com>
For SSH client authors to fix their clients without setting up
Tailscale stuff.
Change-Id: I8c7049398512de6cb91c13716d4dcebed4d47b9c
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
The window may not end up getting unloaded (if other beforeunload
handlers prevent the event), thus we should only close the SSH session
if it's truly getting unloaded.
Updates tailscale/corp#7304
Signed-off-by: Mihai Parparita <mihai@tailscale.com>
If Wrapper.StatisticsEnable is enabled,
then per-connection counters are maintained.
If enabled, Wrapper.StatisticsExtract must be periodically called
otherwise there is unbounded memory growth.
Signed-off-by: Joe Tsai <joetsai@digital-static.net>
xterm 5.0 was released a few weeks ago, and it picks up
xtermjs/xterm.js#4069, which was the main reason why we were on a 5.0
beta.
Signed-off-by: Mihai Parparita <mihai@tailscale.com>
From the original commit that implemented it:
It accepts Postgres connections over Tailscale only, dials
out to the configured upstream database with TLS (using
strong settings, not the swiss cheese that postgres defaults to),
and proxies the client through.
It also keeps an audit log of the sessions it passed through,
along with the Tailscale-provided machine and user identity
of the connecting client.
In our other repo, this was:
commit 92e5edf98e8c2be362f564a408939a5fc3f8c539,
Change-Id I742959faaa9c7c302bc312c7dc0d3327e677dc28.
Co-authored-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Signed-off-by: David Anderson <danderson@tailscale.com>
And add a CLI/localapi and c2n mechanism to enable it for a fixed
amount of time.
Updates #1548
Change-Id: I71674aaf959a9c6761ff33bbf4a417ffd42195a7
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Most visible when using tsnet.Server, but could have resulted in dropped
messages in a few other places too.
Fixes#5743
Signed-off-by: Mihai Parparita <mihai@tailscale.com>
I added new functions to winutil to obtain the state of a service and all
its depedencies, serialize them to JSON, and write them to a Logf.
When tstun.New returns a wrapped ERROR_DEVICE_NOT_AVAILABLE, we know that wintun
installation failed. We then log the service graph rooted at "NetSetupSvc".
We are interested in that specific service because network devices will not
install if that service is not running.
Updates https://github.com/tailscale/tailscale/issues/5531
Signed-off-by: Aaron Klotz <aaron@tailscale.com>
* and move goroutine scrubbing code to its own package for reuse
* bump capver to 45
Change-Id: I9b4dfa5af44d2ecada6cc044cd1b5674ee427575
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
- removed some in-flow time calls
- increase buffer size to 2MB to overcome syscall cost
- move relative time computation from record to report time
Signed-off-by: James Tucker <james@tailscale.com>
* tailcfg, control/controlhttp, control/controlclient: add ControlDialPlan field
This field allows the control server to provide explicit information
about how to connect to it; useful if the client's link status can
change after the initial connection, or if the DNS settings pushed by
the control server break future connections.
Change-Id: I720afe6289ec27d40a41b3dcb310ec45bd7e5f3e
Signed-off-by: Andrew Dunham <andrew@tailscale.com>
Personal preference (so it's obvious it's not a bool flag), but it
also matches the --state= before it.
Bonus: stop allowing PORT to sneak in extra flags to be passed as
their own arguments, as $FOO and ${FOO} expand differently. (${FOO} is
required to concat to strings)
Change-Id: I994626a5663fe0948116b46a971e5eb2c4023216
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
We were just logging them to the console, which is useful for debugging,
but we may want to show them in the UI too.
Updates tailscale/corp#6939
Signed-off-by: Mihai Parparita <mihai@tailscale.com>
This doesn't change any behaviour for now, other than maybe running a
full netcheck more often. The intent is to start gathering data on
captive portals, and additionally, seeing this in the 'tailscale
netcheck' command should provide a bit of additional information to
users.
Updates #1634
Change-Id: I6ba08f9c584dc0200619fa97f9fde1a319f25c76
Signed-off-by: Andrew Dunham <andrew@du.nham.ca>
d5e7e309 changed the `hostinfo.GetVersion` from distro and distro version
to UTS Name Release and moved distribution information under
`hostinfo.Distro*`.
`tailscale configure-host` command implementation for Synology DSM
environments relies on the old semantics of this string for matching DSM
Major version so it's been broken for a few days.
Pull in `hostinfo` and prefix match `hostinfo.DistroVersion` to match
DSM major version.
Signed-off-by: Berk D. Demir <bdd@mindcast.org>
5 seconds may not be enough if we're still loading the derp map and
connecting to a slow machine.
Updates #5693
Signed-off-by: Mihai Parparita <mihai@tailscale.com>
The check was happening too early and in the case of error would wait 5
s and then error out. This makes it so that it does validations before
the SSH check.
Signed-off-by: Maisem Ali <maisem@tailscale.com>
ipnserver previously had support for a Windows-only environment
variable mechanism that further only worked when Windows was running
as a service, not from a console.
But we want it to work from tailscaed too, and we want it to work on
macOS and Synology. So move it to envknob, now that envknob can change
values at runtime post-init.
A future change will wire this up for more platforms, and do something
more for CLI flags like --port, which the bug was originally about.
Updates #5114
Change-Id: I9fd69a9a91bb0f308fc264d4a6c33e0cbe352d71
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This turns 'dialParams' into something more like net.Dialer, where
configuration fields are public on the struct.
Split out of #5648
Change-Id: I0c56fd151dc5489c3c94fb40d18fd639e06473bc
Signed-off-by: Andrew Dunham <andrew@tailscale.com>
The io/ioutil package has been deprecated as of Go 1.16 [1]. This commit
replaces the existing io/ioutil functions with their new definitions in
io and os packages.
Reference: https://golang.org/doc/go1.16#ioutil
Signed-off-by: Eng Zer Jun <engzerjun@gmail.com>
The data that we send over WebSockets is encrypted and thus not
compressible. Additionally, Safari has a broken implementation of compression
(see nhooyr/websocket#218) that makes enabling it actively harmful.
Fixestailscale/corp#6943
Signed-off-by: Mihai Parparita <mihai@tailscale.com>
As noted in #5617, our documented method of blocking log.tailscale.io
DNS no longer works due to bootstrap DNS.
Instead, provide an explicit flag (--no-logs-no-support) and/or env
variable (TS_NO_LOGS_NO_SUPPORT=true) to explicitly disable logcatcher
uploads. It also sets a bit on Hostinfo to say that the node is in that
mode so we can end any support tickets from such nodes more quickly.
This does not yet provide an easy mechanism for users on some
platforms (such as Windows, macOS, Synology) to set flags/env. On
Linux you'd used /etc/default/tailscaled typically. Making it easier
to set flags for other platforms is tracked in #5114.
Fixes#5617Fixestailscale/corp#1475
Change-Id: I72404e1789f9e56ec47f9b7021b44c025f7a373a
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
The auto-generated hostname is nice as a default, but there are cases
where the client has a more specific name that it can generate.
Signed-off-by: Mihai Parparita <mihai@tailscale.com>
The default WebLinksAddon handler uses window.open(), but that gets blocked
by the popup blocker when the event being handled is another window. We
instead need to invoke open() on the window that the event was triggered
in.
Signed-off-by: Mihai Parparita <mihai@tailscale.com>
The `tailscale web` UI is the primary interface for Synology and Home
Assistant users (and perhaps others), so is the logical place to put our
open source license notices. I don't love adding things to what is
currently a very minimal UI, but I'm not sure of a better option.
Updates tailscale/corp#5780
Signed-off-by: Will Norris <will@tailscale.com>
More user friendly, and as a side-effect we handle SSH check mode better,
since the URL that's output is now clickable.
Fixes#5247
Signed-off-by: Mihai Parparita <mihai@tailscale.com>
xtermjs/xterm.js#4069 was merged and published (in 5.0.0-beta.58),
no need for the fork added by 01e6565e8a.
Signed-off-by: Mihai Parparita <mihai@tailscale.com>
NextDNS is unique in that users create accounts and then get
user-specific DNS IPs & DoH URLs.
For DoH, the customer ID is in the URL path.
For IPv6, the IP address includes the customer ID in the lower bits.
For IPv4, there's a fragile "IP linking" mechanism to associate your
public IPv4 with an assigned NextDNS IPv4 and that tuple maps to your
customer ID.
We don't use the IP linking mechanism.
Instead, NextDNS is DoH-only. Which means using NextDNS necessarily
shunts all DNS traffic through 100.100.100.100 (programming the OS to
use 100.100.100.100 as the global resolver) because operating systems
can't usually do DoH themselves.
Once it's in Tailscale's DoH client, we then connect out to the known
NextDNS IPv4/IPv6 anycast addresses.
If the control plane sends the client a NextDNS IPv6 address, we then
map it to the corresponding NextDNS DoH with the same client ID, and
we dial that DoH server using the combination of v4/v6 anycast IPs.
Updates #2452
Change-Id: I3439d798d21d5fc9df5a2701839910f5bef85463
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Allows other work to be unblocked while xtermjs/xterm.js#4069 is worked
through.
To enable testing the popup window handling, the standalone app allows
opening of SSH sessions in new windows by holding down the alt key
while pressing the SSH button.
Signed-off-by: Mihai Parparita <mihai@tailscale.com>
Store the requested size is a struct field, and use that when actually
creating the SSH session.
Fixes#5567
Signed-off-by: Mihai Parparita <mihai@tailscale.com>
These errors aren't actionable and just fill up logs with useless data.
See the following Go issue for more details:
https://golang.org/issue/26918
Signed-off-by: Andrew Dunham <andrew@tailscale.com>
Allows imports of the NPM package added by 1a093ef482
to be replaced with import("http://localhost:9090/pkg/pkg.js"), so that
changes can be made in parallel to both the module and code that uses
it (without any need for NPM publishing or even building of the package).
Updates #5415
Signed-off-by: Mihai Parparita <mihai@tailscale.com>
Apparently the validate route doesn't check content-types or handle
hujson with comments correctly. This patch makes gitops-pusher convert
the hujson to normal json.
Signed-off-by: Xe <xe@tailscale.com>
Signed-off-by: Xe <xe@tailscale.com>
With MagicDNS GA, we are giving every tailnet a tailnet-<hex>.ts.net name.
We will only parse out if legacy domains include beta.tailscale.net; otherwise,
set tailnet to the full domain format going forward.
Signed-off-by: nyghtowl <warrick@tailscale.com>
This is entirely optional (i.e. failing in this code is non-fatal) and
only enabled on Linux for now. Additionally, this new behaviour can be
disabled by setting the TS_DEBUG_DISABLE_AF_PACKET environment variable.
Updates #3824
Replaces #5474
Co-authored-by: Andrew Dunham <andrew@du.nham.ca>
Signed-off-by: David Anderson <danderson@tailscale.com>
We were just outputting them to the terminal, but that's hard to debug
because we immediately tear down the terminal when getting an error.
Signed-off-by: Mihai Parparita <mihai@tailscale.com>
This makes a "modified externally" error turn into a "modified externally" warning. It means CI won't fail if someone does something manually in the admin console.
Signed-off-by: Xe <xe@tailscale.com>
Adds an on-demand GitHub Action that publishes the package to the npm
registry (currently under tailscale-connect, will be moved to
@tailscale/connect once we get control of the npm org).
Makes the package.json for the NPM package be dynamically generated to
have the current Tailscale client version.
Updates #5415
Signed-off-by: Mihai Parparita <mihai@tailscale.com>
This lets the control plane can make HTTP requests to nodes.
Then we can use this for future things rather than slapping more stuff
into MapResponse, etc.
Change-Id: Ic802078c50d33653ae1f79d1e5257e7ade4408fd
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
`src/` is broken up into several subdirectories:
- `lib/` and `types`/ for shared code and type definitions (more code
will be moved here)
- `app/` for the existing Preact-app
- `pkg/` for the new NPM package
A new `build-pkg` esbuild-based command is added to generate the files
for the NPM package. To generate type definitions (something that esbuild
does not do), we set up `dts-bundle-generator`.
Includes additional cleanups to the Wasm type definitions (we switch to
string literals for enums, since exported const enums are hard to use
via packages).
Also allows the control URL to be set a runtime (in addition to the
current build option), so that we don't have to rebuild the package
for dev vs. prod use.
Updates #5415
Signed-off-by: Mihai Parparita <mihai@tailscale.com>
When sharing nodes, the name of the sharee node is not exposed (instead
it is hardcoded to "device-of-shared-to-user"), which means that we
can't determine the tailnet of that node. Don't immediately fail when
that happens, since it only matters if "Expected-Tailnet" is used.
Signed-off-by: Will Norris <will@tailscale.com>
We can't write to src/ when tsconnect is used a dependency in another
repo (see also b763a12331). We therefore
need to switch from writing to src/ to using esbuild plugins to handle
the requests for wasm_exec.js (the Go JS runtime for Wasm) and the
Wasm build of the Go module.
This has the benefit of allowing Go/Wasm changes to be picked up without
restarting the server when in dev mode (Go compilation is fast enough
that we can do this on every request, CSS compilation continues to be
the long pole).
Fixes#5382
Signed-off-by: Mihai Parparita <mihai@tailscale.com>
This works around the 2.3s delay in short name lookups when SNR is
enabled.
C:\Windows\System32\drivers\etc\hosts file. We only add known hosts that
match the search domains, and we populate the list in order of
Search Domains so that our matching algorithm mimics what Windows would
otherwise do itself if SNR was off.
Updates #1659
Signed-off-by: Maisem Ali <maisem@tailscale.com>
Several customers have had issues due to the permissions
on /dev/net. Set permissions to 0755.
Fixes https://github.com/tailscale/tailscale/issues/5048
Signed-off-by: Denton Gentry <dgentry@tailscale.com>
Apparently OpenBSD can forward packets with manual configuration,
https://github.com/tailscale/tailscale/issues/2498#issuecomment-1114216999
But this makes it work by default. People doing things by hand can
set TS_DEBUG_WRAP_NETSTACK=0 in the environment.
Change-Id: Iee5f32252f83af2baa0ebbe3f20ce9fec5f29e96
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Convert ParseResponse and Response to use netip.AddrPort instead of
net.IP and separate port.
Fixes#5281
Signed-off-by: Kris Brandow <kris.brandow@gmail.com>
Switch deephash to use sha256x.Hash.
We add sha256x.HashString to efficiently hash a string.
It uses unsafe under the hood to convert a string to a []byte.
We also modify sha256x.Hash to export the underlying hash.Hash
for testing purposes so that we can intercept all hash.Hash calls.
Performance:
name old time/op new time/op delta
Hash-24 19.8µs ± 1% 19.2µs ± 1% -3.01% (p=0.000 n=10+10)
HashPacketFilter-24 2.61µs ± 0% 2.53µs ± 1% -3.01% (p=0.000 n=8+10)
HashMapAcyclic-24 31.3µs ± 1% 29.8µs ± 0% -4.80% (p=0.000 n=10+9)
TailcfgNode-24 1.83µs ± 1% 1.82µs ± 2% ~ (p=0.305 n=10+10)
HashArray-24 344ns ± 2% 323ns ± 1% -6.02% (p=0.000 n=9+10)
The performance gains is not as dramatic as sha256x over sha256 due to:
1. most of the hashing already occurring through the direct memory hashing logic, and
2. what does not go through direct memory hashing is slowed down by reflect.
Signed-off-by: Joe Tsai <joetsai@digital-static.net>
This change allows for an auth key to be specified as a url query param
for use in development mode. If an auth key is specified and valid, it
will authorize the client for use immediately.
Updates #5144
Signed-off-by: Charlotte Brandhorst-Satzkorn <charlotte@tailscale.com>
Reduces the amount of boilerplate to render the UI and makes it easier to
respond to state changes (e.g. machine getting authorized, netmap changing,
etc.)
Preact adds ~13K to our bundle size (5K after Brotli) thus is a neglibible
size contribution. We mitigate the delay in rendering the UI by having a static
placeholder in the HTML.
Required bumping the esbuild version to pick up evanw/esbuild#2349, which
makes it easier to support Preact's JSX code generation.
Fixes#5137Fixes#5273
Signed-off-by: Mihai Parparita <mihai@tailscale.com>
Following the pattern elsewhere, we create a new tka-specific types package for the types
that need to couple between the serialized structure types, and tka.
Signed-off-by: Tom DNetto <tom@tailscale.com>
To improve the local development experience, this change allows a
control url to be passed in with the `--dev-control=` flag.
If the flag is passed in when not specifying dev, an error is returned.
If no flag is passed, the default remains the Tailscale controlled
control server set by `ipn.DefaultControlURL`.
Co-authored-by: Maisem Ali <maisem@tailscale.com>
Signed-off-by: Charlotte Brandhorst-Satzkorn <charlotte@tailscale.com>
Initialize logtail and provide an uploader that works in the
browser (we make a no-cors cross-origin request to avoid having to
open up the logcatcher servers to CORS).
Fixes#5147
Signed-off-by: Mihai Parparita <mihai@tailscale.com>
We have very similar code in corp, moving it to util/precompress allows
it to be reused.
Updates #5133
Signed-off-by: Mihai Parparita <mihai@tailscale.com>
- A network-lock key is generated if it doesn't already exist, and stored in the StateStore. The public component is communicated to control during registration.
- If TKA state exists on the filesystem, a tailnet key authority is initialized (but nothing is done with it for now).
Signed-off-by: Tom DNetto <tom@tailscale.com>
JS -> native nodes worked already, tested by exposing a fetch() method
to JS (it's Promise-based to be consistent with the native fetch() API).
Native nodes -> JS almost worked, we just needed to set the LocalBackend
on the userspace netstack.
Fixes#5130
Signed-off-by: Mihai Parparita <mihai@tailscale.com>
Avoids waterfalling of requests from the file (its load is triggered
from JavaScript).
Also has other cleanups to index.html, adding a <title> and moving the
<script> to being loaded sooner (but still not delaying page rendering
by using the defer attribute).
Fixes#5141Fixes#5135
Signed-off-by: Mihai Parparita <mihai@tailscale.com>
Changes Gzip and Brotli to optimize for speed instead of size. This
signficantly speeds up Brotli, and is useful when iterating locally
or running the build during a CI job (where we just care that it
can successfully build).
Signed-off-by: Mihai Parparita <mihai@tailscale.com>
Makes the terminal container DOM node as large as the window (except for
the header) via flexbox. The xterm.js terminal is then sized to fit via
xterm-addon-fit. Once we have a computed rows/columns size, and we can
tell the SSH session of the computed size.
Required introducing an IPNSSHSession type to allow the JS to control
the SSH session once opened. That alse allows us to programatically
close it, which we do when the user closes the window with the session
still active.
I initially wanted to open the terminal in a new window instead (so that
it could be resizable independently of the main window), but xterm.js
does not appear to work well in that mode (possibly because it adds an
IntersectionObserver to pause rendering when the window is not visible,
and it ends up doing that when the parent window is hidden -- see
xtermjs/xterm.js@87dca56dee)
Fixes#5150
Signed-off-by: Mihai Parparita <mihai@tailscale.com>
This adds the inverse to CapabilityFileSharingSend so that senders can
identify who they can Taildrop to.
Updates #2101
Signed-off-by: Maisem Ali <maisem@tailscale.com>
The go wasm process exiting is a sign of an unhandled panic. Also
add a explicit recover() call in the notify callback, that's where most
logic bugs are likely to happen (and they may not be fatal).
Also fixes the one panic that was encountered (nill pointer dereference
when generating the JS view of the netmap).
Fixes#5132
Signed-off-by: Mihai Parparita <mihai@tailscale.com>
Integrates Tailwind CSS as an esbuild plugin that invokes the CLI
to process the input. It takes ~400ms, so it seems like the easiest
option (vs running a separate process for dev mode).
Existing minimal look and feel is replicated with Tailwind classes,
mostly to prove that the entire system works, including unused
class removal.
Also fixes yarn warnings about package.json not having a license
(which were showing up when invoking any scripts).
Fixes#5136Fixes#5129
Signed-off-by: Mihai Parparita <mihai@tailscale.com>
Continues to use esbuild for development mode and building. Also
includes a `yarn lint` script that uses tsc to do full type checking.
Fixes#5138
Signed-off-by: Mihai Parparita <mihai@tailscale.com>
This allows gitops-pusher to detect external ACL changes. I'm not
sure what to call this problem, so I've been calling it the "three
version problem" in my notes. The basic problem is that at any given
time we only have two versions of the ACL file at any given point:
the version in CONTROL and the one in the git repo. In order to
check if there has been tampering of the ACL files in the admin
panel, we need to have a _third_ version to compare against.
In this case I am not storing the old ACL entirely (though that could
be a reasonable thing to add in the future), but only its sha256sum.
This allows us to detect if the shasum in control matches the shasum
we expect, and if that expectation fails, then we can react
accordingly.
This will require additional configuration in CI, but I'm sure that
can be done.
Signed-off-by: Xe <xe@tailscale.com>
Adds a tool/yarn helper script that uses specific versions of yarn and
node, downloading them if necessary.
Modeled after tool/go (and the yarn and node Redo scripts from the
corp repo).
Also allows the path to yarn to be overidden (in case the user does not
want to use this script) and always pipes yarn output (to make debugging
and viewing of process easier).
Signed-off-by: Mihai Parparita <mihai@tailscale.com>
When using tsconnect as a module in another repo, we cannot write to
the ./dist directory (modules directories are read-only by default -
there is a -modcacherw flag for `go get` but we can't count on it).
We add a -distdir flag that is honored by both the build and serve
commands for where to place output in.
Somewhat tedious because esbuild outputs paths relative to the working
directory, so we need to do some extra munging to make them relative
to the output directory.
Signed-off-by: Mihai Parparita <mihai@tailscale.com>
Runs a Tailscale client in the browser (via a WebAssembly build of the
wasm package) and allows SSH access to machines. The wasm package exports
a newIPN function, which returns a simple JS object with methods like
start(), login(), logout() and ssh(). The golang.org/x/crypto/ssh
package is used for the SSH client.
Terminal emulation and QR code renedring is done via NPM packages (xterm
and qrcode respectively), thus we also need a JS toolchain that can
install and bundle them. Yarn is used for installation, and esbuild
handles loading them and bundling for production serving.
Updates #3157
Signed-off-by: Mihai Parparita <mihai@tailscale.com>
This lets us distinguish "no IPv6 because the device's ISP doesn't
offer IPv6" from "IPv6 is unavailable/disabled in the OS".
Signed-off-by: David Anderson <danderson@tailscale.com>
QTS 5.0 doesn't always pass a qtoken, in some circumstances
it sends a NAS_SID cookie for us to verify instead.
Signed-off-by: Denton Gentry <dgentry@tailscale.com>
3f686688a6 regressed the Windows beFirewallKillswitch code,
preventing the /firewall subprocess from running.
Fixestailscale/corp#6063
Change-Id: Ibd105759e5fecfeffc54f587f8ddcd0f1cbc4dca
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Apparently the API for running ACL tests returns a 200 if the ACL tests
fail. This is weird, but we can handle it.
Signed-off-by: Xe <xe@tailscale.com>
And rewrite cloud detection to try to do only zero or one metadata
discovery request for all clouds, only doing a first (or second) as
confidence increases. Work remains for Windows, but a start.
And add Cloud to tailcfg.Hostinfo, which helped with testing using
"tailcfg debug hostinfo".
Updates #4983 (Linux only)
Updates #4984
Change-Id: Ib03337089122ce0cb38c34f724ba4b4812bc614e
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Currently if you use '-c' and ping a host that times out, ping will
continue running indefinitely. This change exits the loop with "no
reply" when we time out, hit the value specified by '-c' and do not
have anyPong. If we have anyPong it returns nil.
Signed-off-by: Aaron Bieber <aaron@bolddaemon.com>
And remove the GCP special-casing from ipn/ipnlocal; do it only in the
forwarder for *.internal.
Fixes#4980Fixes#4981
Change-Id: I5c481e96d91f3d51d274a80fbd37c38f16dfa5cb
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This does three things:
* If you're on GCP, it adds a *.internal DNS split route to the
metadata server, so we never break GCP DNS names. This lets people
have some Tailscale nodes on GCP and some not (e.g. laptops at home)
without having to add a Tailnet-wide *.internal DNS route.
If you already have such a route, though, it won't overwrite it.
* If the 100.100.100.100 DNS forwarder has nowhere to forward to,
it forwards it to the GCP metadata IP, which forwards to 8.8.8.8.
This means there are never errNoUpstreams ("upstream nameservers not set")
errors on GCP due to e.g. mangled /etc/resolv.conf (GCP default VMs
don't have systemd-resolved, so it's likely a DNS supremacy fight)
* makes the DNS fallback mechanism use the GCP metadata IP as a
fallback before our hosted HTTP-based fallbacks
I created a default GCP VM from their web wizard. It has no
systemd-resolved.
I then made its /etc/resolv.conf be empty and deleted its GCP
hostnames in /etc/hosts.
I then logged in to a tailnet with no global DNS settings.
With this, tailscaled writes /etc/resolv.conf (direct mode, as no
systemd-resolved) and sets it to 100.100.100.100, which then has
regular DNS via the metadata IP and *.internal DNS via the metadata IP
as well. If the tailnet configures explicit DNS servers, those are used
instead, except for *.internal.
This also adds a new util/cloudenv package based on version/distro
where the cloud type is only detected once. We'll likely expand it in
the future for other clouds, doing variants of this change for other
popular cloud environments.
Fixes#4911
RELNOTES=Google Cloud DNS improvements
Change-Id: I19f3c2075983669b2b2c0f29a548da8de373c7cf
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
The goal here is to
1. make it so that the number doesn't diverge between the various places
we had it defined
2. not define the number in corp, only in oss
Signed-off-by: Maisem Ali <maisem@tailscale.com>
This is for an upcoming blogpost on how to manage Tailscale ACLs using a
GitOps flow. This tool is intended to be used in CI and will allow users
to have a git repository be the ultimate source of truth for their ACL
file. This enables ACL changes to be proposed, approved and discussed
before they are applied.
Signed-off-by: Xe <xe@tailscale.com>
This reverts commit 03e3e6abcd
in favor of #4785.
Change-Id: Ied65914106917c4cb8d15d6ad5e093a6299d1d48
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
We weren't wiring up netstack.Impl to the LocalBackend in some cases
on Windows. This fixes Windows 7 when run as a service.
Updates #4750 (fixes after pull in to corp repo)
Change-Id: I9ce51b797710f2bedfa90545776b7628c7528e99
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
We can't do Noise-over-HTTP in Wasm/JS (because we don't have bidirectional
communication), but we should be able to do it over WebSockets. Reuses
derp WebSocket support that allows us to turn a WebSocket connection
into a net.Conn.
Updates #3157
Signed-off-by: Mihai Parparita <mihai@tailscale.com>
This makes it so that the user is notified that the action
they are about to take may result in them getting disconnected from
the machine. It then waits for 5s for the user to maybe Ctrl+C out of
it.
It also introduces a `--accept-risk=lose-ssh` flag for automation, which
allows the caller to pre-acknowledge the risk.
The two actions that cause this are:
- updating `--ssh` from `true` to `false`
- running `tailscale down`
Updates #3802
Signed-off-by: Maisem Ali <maisem@tailscale.com>
AFAICT this isn't documented on MSDN, but based on the issue referenced below,
NRPT rules are not working when a rule specifies > 50 domains.
This patch modifies our NRPT rule generator to split the list of domains
into chunks as necessary, and write a separate rule for each chunk.
For compatibility reasons, we continue to use the hard-coded rule ID, but
as additional rules are required, we generate new GUIDs. Those GUIDs are
stored under the Tailscale registry path so that we know which rules are ours.
I made some changes to winutils to add additional helper functions in support
of both the code and its test: I added additional registry accessors, and also
moved some token accessors from paths to util/winutil.
Fixes https://github.com/tailscale/coral/issues/63
Signed-off-by: Aaron Klotz <aaron@tailscale.com>
I wrote this code way back at the beginning of my tenure at Tailscale when we
had concerns about needing to restore deleted machine keys from backups.
We never ended up using this functionality, and the code is now getting in the
way, so we might as well remove it.
Signed-off-by: Aaron Klotz <aaron@tailscale.com>
Adds a stub for syscall.Exec when GOOS=js. We also had a separate branch
for Windows, might as well use the same mechanism there too.
For #3157
Signed-off-by: Mihai Parparita <mihai@tailscale.com>
Enables the behavior described in the statepath flag, where if only
statedir is passed, then state is statedir/tailscaled.state.
Signed-off-by: James Tucker <james@tailscale.com>
Once a stop request is received and the service updates its status to `svc.StopPending`,
it should continue running *until the shutdown sequence is complete*, and then
return out of `(*ipnService).Execute`, which automatically sends a `svc.Stopped`
notification to Windows.
To make this happen, I changed the loop so that it runs until `doneCh` is
closed, and then returns. I also removed a spurious `svc.StopPending` notification
that the Windows Service Control Manager might be interpreting as a request for
more time to shut down.
Finally, I added some optional logging that sends a record of service notifications
to the Windows event log, allowing us to more easily correlate with any Service
Control Manager errors that are sent to the same log.
Change-Id: I5b596122e5e89c4c655fe747a612a52cb4e8f1e0
Signed-off-by: Aaron Klotz <aaron@tailscale.com>
Remove all global variables, and clean up tsnet and cmd/tailscale's usage.
This is in prep for using this package for the web API too (it has the
best package name).
RELNOTE=tailscale.com/client/tailscale package refactored w/ LocalClient type
Change-Id: Iba9f162fff0c520a09d1d4bd8862f5c5acc9d7cd
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Well, goimports actually (which adds the normal import grouping order we do)
Change-Id: I0ce1b1c03185f3741aad67c14a7ec91a838de389
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
The connections returned from SystemDial are automatically closed when
there is a major link change.
Also plumb through the dialer to the noise client so that connections
are auto-reset when moving from cellular to WiFi etc.
Updates #3363
Signed-off-by: Maisem Ali <maisem@tailscale.com>
No CLI support yet. Just the curl'able version if you know the peerapi
port. (like via a TSMP ping)
Updates #306
Change-Id: I0662ba6530f7ab58d0ddb24e3664167fcd1c4bcf
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Still a little wonky, though. See the tcsetattr error and inability to
hit Ctrl-D, for instance:
bradfitz@laptop ~ % tailscale.app ssh foo@bar
tcsetattr: Operation not permitted
# Authentication checked with Tailscale SSH.
# Time since last authentication: 1h13m22s
foo@bar:~$ ^D
^D
^D
Updates #4518
Updates #4529
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
For debugging what's visible inside the macOS sandbox.
But could also be useful for giving users portable commands
during debugging without worrying about which OS they're on.
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
I've done this a handful of times in the past and again today.
Time to make it a supported thing for the future.
Used while debugging tailscale/corp#4559 (macsys CLI issues)
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This reverts commit 8d6793fd70.
Reason: breaks Android build (cgo/pthreads addition)
We can try again next cycle.
Change-Id: I5e7e1730a8bf399a8acfce546a6d22e11fb835d5
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Attempt to load the xt_mark kernel module when it is not present. If the
load fails, log error information.
It may be tempting to promote this failure to an error once it has been
in use for some time, so as to avoid reaching an error with the iptables
invocation, however, there are conditions under which the two stages may
disagree - this change adds more useful breadcrumbs.
Example new output from tailscaled running under my WSL2:
```
router: ensure module xt_mark: "/usr/sbin/modprobe xt_mark" failed: exit status 1; modprobe: FATAL: Module xt_mark not found in directory /lib/modules/5.10.43.3-microsoft-standard-WSL2
```
Background:
There are two places to lookup modules, one is `/proc/modules` "old",
the other is `/sys/module/` "new".
There was query_modules(2) in linux <2.6, alas, it is gone.
In a docker container in the default configuration, you would get
/proc/modules and /sys/module/ both populated. lsmod may work file,
modprobe will fail with EPERM at `finit_module()` for an unpriviliged
container.
In a priviliged container the load may *succeed*, if some conditions are
met. This condition should be avoided, but the code landing in this
change does not attempt to avoid this scenario as it is both difficult
to detect, and has a very uncertain impact.
In an nspawn container `/proc/modules` is populated, but `/sys/module`
does not exist. Modern `lsmod` versions will fail to gather most module
information, without sysfs being populated with module information.
In WSL2 modules are likely missing, as the in-use kernel typically is
not provided by the distribution filesystem, and WSL does not mount in a
module filesystem of its own. Notably the WSL2 kernel supports iptables
marks without listing the xt_mark module in /sys/module, and
/proc/modules is empty.
On a recent kernel, we can ask the capabilities system about SYS_MODULE,
that will help to disambiguate between the non-privileged container case
and just being root. On older kernels these calls may fail.
Update #4329
Signed-off-by: James Tucker <james@tailscale.com>
$ tailscale debug via 0xb 10.2.0.0/16
fd7a:115c:a1e0:b1a:0🅱️a02:0/112
$ tailscale debug via fd7a:115c:a1e0:b1a:0🅱️a02:0/112
site 11 (0xb), 10.2.0.0/16
Previously: 3ae701f0eb
This adds a little debug tool to do CIDR math to make converting between
those ranges easier for now.
Updates #3616
Change-Id: I98302e95d17765bfaced3ecbb71cbd43e84bff46
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This commit changes proxy-to-grafana to report errors while polling for
tailscaled status instead of terminating at the first sign of an error.
This allows tailscale some time to come up before the proxy decides to
give up.
Signed-off-by: Blake Mizerany <blake.mizerany@gmail.com>
Fail on unsupported platforms (must be Linux or macOS tailscaled with
WIP env) or when disabled by admin (with TS_DISABLE_SSH_SERVER=1)
Updates #3802
Change-Id: I5ba191ed0d8ba4ddabe9b8fc1c6a0ead8754b286
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Remove the weird netstack -> tailssh dependency and instead have tailssh
register itself with ipnlocal when linked.
This makes tailssh.server a singleton, so we can have a global map of
all sessions.
Updates #3802
Change-Id: Iad5caec3a26a33011796878ab66b8e7b49339f29
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This extracts DOH mapping of known public DNS providers in
forwarder.go into its own package, to be consumed by other repos
Signed-off-by: Jenny Zhang <jz@tailscale.com>
Usage of userspace-networking is increasing, and the aggressive GC
tuning causes a significant reduction in performance in that mode.
Signed-off-by: James Tucker <james@tailscale.com>
This conforms to the NGINX subrequest result authentication protocol[1]
using the NGINX module `ngx_http_auth_request_module`. This is based on
the example that @peterkeen provided on Twitter[2], but with several
changes to make things more tightly locked down:
* This listens over a UNIX socket instead of a TCP socket to prevent
leakage to the network
* This uses systemd socket activation so that systemd owns the socket
and can then lock down the service to the bare minimum required to do
its job without having to worry about dropping permissions
* This provides additional information in HTTP response headers that can
be useful for integrating with various services
* This has a script to automagically create debian and redhat packages
for easier distribution
This will be written about on the Tailscale blog. There is more
information in README.md.
[1]: https://docs.nginx.com/nginx/admin-guide/security-controls/configuring-subrequest-authentication/
[2]: https://github.com/peterkeen/tailscale/blob/main/cmd/nginx-auth-proxy/nginx-auth-proxy.go
Signed-off-by: Xe Iaso <xe@tailscale.com>
This defines a new magic IPv6 prefix, fd7a:115c:a1e0:b1a::/64, a
subset of our existing /48, where the final 32 bits are an IPv4
address, and the middle 32 bits are a user-chosen "site ID". (which
must currently be 0000:00xx; the top 3 bytes must be zero for now)
e.g., I can say my home LAN's "site ID" is "0000:00bb" and then
advertise its 10.2.0.0/16 IPv4 range via IPv6, like:
tailscale up --advertise-routes=fd7a:115c:a1e0:b1a::bb:10.2.0.0/112
(112 being /128 minuse the /96 v6 prefix length)
Then people in my tailnet can:
$ curl '[fd7a:115c:a1e0:b1a::bb:10.2.0.230]'
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" ....
Updates #3616, etc
RELNOTE=initial support for TS IPv6 addresses to route v4 "via" specific nodes
Change-Id: I9b49b6ad10410a24b5866b9fbc69d3cae1f600ef
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
To "automatically receive taildrop files to my Downloads directory,"
user currently has to run 'tailscale file get' in a loop. Make
it easy to do this without shell.
Updates: #2312
Signed-off-by: David Eger <david.eger@gmail.com>
In tracking down issue #4144 and reading through the netstack code in
detail, I discovered that the packet buf Clone path did not reset the
packetbuf it was getting from the sync.Pool. The fix was sent upstream
https://github.com/google/gvisor/pull/7385, and this bump pulls that in.
At this time there is no known path that this fixes, however at the time
of upstream submission this reset at least one field that could lead to
incorrect packet routing if exercised, a situation that could therefore
lead to an information leak.
Signed-off-by: James Tucker <james@tailscale.com>
In addition an envknob (TS_DEBUG_NETSTACK_LEAK_MODE) now provides access
to set leak tracking to more useful values.
Fixes#4309
Signed-off-by: James Tucker <james@tailscale.com>
* shell.nix: rename goimports to gotools
Signed-off-by: Xe <xe@tailscale.com>
* cmd/mkpkg: allow specifying description and name in flag args
Signed-off-by: Xe <xe@tailscale.com>
While we rearrange/upstream things.
gliderlabs/ssh is forked into tempfork from our prior fork
at be8b7add40
x/crypto/ssh OTOH is forked at
https://github.com/tailscale/golang-x-crypto because it was gnarlier
to vendor with various internal packages, etc.
Its git history shows where it starts (2c7772ba30643b7a2026cbea938420dce7c6384d).
Updates #3802
Change-Id: I546e5cdf831cfc030a6c42557c0ad2c58766c65f
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
And return an error if you use non-flag arguments.
Change-Id: I0dd6c357eb5cabd0f17020f21ba86406aea21681
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Adds missing file from fc12cbfcd3.
GitHub was having issues earlier and it was all green because the
checks never actually ran, but the DCO non-Actions check at least did,
so "green" and I merged, not realizing it hadn't really run anything.
Updates #3802
Change-Id: I29f605eebe5336f1f3ca28ebb78b092dd99d9fd8
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This adds a "tailscale nc" command that acts a bit like "nc", but
dials out via tailscaled via localapi.
This is a step towards a "tailscale ssh", as we'll use "tailscale nc"
as a ProxyCommand for in some cases (notably in userspace mode).
But this is also just useful for debugging & scripting.
Updates #3802
RELNOTE=tailscale nc
Change-Id: Ia5c37af2d51dd0259d5833d80264d3ad5f68446a
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Aaron Klotz