tsnet.Server.Close was calling listener.Close with the server mutex
held, but the listener close method tries to grab that mutex, resulting
in a deadlock.
Co-authored-by: David Crawshaw <crawshaw@tailscale.com>
Signed-off-by: Maisem Ali <maisem@tailscale.com>
We persist the ServeConfig, even for tsnet apps. It's quite possible for
the ServeConfig to be out of step with the code. Example: If you run
`ListenFunnel` then later turn it off, the ServeConfig will still show
it enabled, the admin console will show it enabled, but the packet
handler will reject the packets.
Workaround by clearing the ServeConfig in `tsnet.Up`
Signed-off-by: Shayne Sweeney <shayne@tailscale.com>
This lets a tsnet binary share a server out over Tailscale Funnel.
Signed-off-by: David Crawshaw <crawshaw@tailscale.com>
Signed-off-by: Maisem Ali <maisem@tailscale.com>
Signed-off-by: Shayne Sweeney <shayne@tailscale.com>
Previously the part that handled Funnel connections was not
aware of any listeners that tsnet.Servers might have had open
so it would check against the ServeConfig and fail.
Adding a ServeConfig for a TCP proxy was also not suitable in this
scenario as that would mean creating two different listeners and have
one forward to the other, which really meant that you could not have
funnel and tailnet-only listeners on the same port.
This also introduces the ipn.FunnelConn as a way for users to identify
whether the call is coming over funnel or not. Currently it only holds
the underlying conn and the target as presented in the "Tailscale-Ingress-Target"
header.
Signed-off-by: Maisem Ali <maisem@tailscale.com>
Previously, it would accept all TCP connections and then close the ones
it did not care about. Make it only ever accept the connections that it
cares about.
Signed-off-by: Maisem Ali <maisem@tailscale.com>
Add a DNS server which always responds as its own IP addresses.
Additionally add a tsnet TailscaleIPs() function to return the
IP addresses, both IPv4 and IPv6.
Updates https://github.com/tailscale/tailscale/issues/1748
Signed-off-by: Denton Gentry <dgentry@tailscale.com>
Some languages do not give you any useful access to the sockets
underlying their networking packages. E.g. java.net.http.HttpClient
provides no official access to its dialing logic.
...but everyone supports proxies. So add a SOCKS5 proxy on the listener
we are already running.
(The function being revamped is very new,
I only added it in the last week and it wasn't part of any release,
so I believe it is fine to redo its function signature.)
Signed-off-by: David Crawshaw <crawshaw@tailscale.com>
No ListenPacket support yet, but Listen with a udp network type fit
easier into netstack's model to start.
Then added an example of using it to cmd/sniproxy with a little udp
:53 handler.
No tests in tsnet yet because we don't have support for dialing over
UDP in tsnet yet. When that's done, a new test can test both sides.
Updates #5871
Updates #1748
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
It turns out even with an AuthKey that pre-approves devices on a tailnet
with machine auth turned on, we still temporarily see the
NeedsMachineAuth state. So remove that error (for now).
Signed-off-by: David Crawshaw <crawshaw@tailscale.com>
This is for use by LocalAPI clients written in other languages that
don't appear to be able to talk HTTP over a socket (e.g.
java.net.http.HttpClient).
Signed-off-by: David Crawshaw <crawshaw@tailscale.com>
This updates all source files to use a new standard header for copyright
and license declaration. Notably, copyright no longer includes a date,
and we now use the standard SPDX-License-Identifier header.
This commit was done almost entirely mechanically with perl, and then
some minimal manual fixes.
Updates #6865
Signed-off-by: Will Norris <will@tailscale.com>
The macOS client was forgetting to call netstack.Impl.SetLocalBackend.
Change the API so that it can't be started without one, eliminating this
class of bug. Then update all the callers.
Updates #6764
Change-Id: I2b3a4f31fdfd9fdbbbbfe25a42db0c505373562f
Signed-off-by: Claire Wang <claire@tailscale.com>
Co-authored-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This is temporary while we work to upstream performance work in
https://github.com/WireGuard/wireguard-go/pull/64. A replace directive
is less ideal as it breaks dependent code without duplication of the
directive.
Signed-off-by: Jordan Whited <jordan@tailscale.com>
This allows tsnet services to make requests to other services in the
tailnet with the tsnet service identity instead of the identity of the
host machine. This also enables tsnet services to make requests to other
tailnet services without having to have the host machine join the
tailnet.
Signed-off-by: Xe Iaso <xe@tailscale.com>
Signed-off-by: Xe Iaso <xe@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>
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>
Allow callers to verify that a net.Listener is a tsnet.listener by type
asserting against this Server method, as well as providing access to the
underlying Server.
This is initially being added to support the caddy integration in
caddyserver/caddy#5002.
Signed-off-by: Will Norris <will@tailscale.com>
It should be safe to initialize multiple Server instances
without any resource leaks what-so-ever.
Signed-off-by: Joe Tsai <joetsai@digital-static.net>
... so callers can provide the AuthKey via mechanisms other than
environment variables which means multiple Servers can't be started
concurrently in the same process without coordination.
Change-Id: I7736ef4f59b7cc29637939e140e990613ce58e0d
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Use the "tailscaled" prefix instead of "tsnet" for state file names:
1. It is consistent with the pre-existing {{Dir}}/tailscaled.state file.
2. It makes the file layout of `tsnet` and `tailscaled` identical,
so that they are compatible with each other.
Signed-off-by: Joe Tsai <joetsai@digital-static.net>
refactor logpolicy config loading to make it easier to reuse from
outside the package. Within tsnet, setup a basic logtail config.
Signed-off-by: Will Norris <will@tailscale.com>
This were intended to be pushed to #4408, but in my excitement I
forgot to git push :/ better late than never.
Signed-off-by: Tom DNetto <tom@tailscale.com>
This change wires netstack with a hook for traffic coming from the host
into the tun, allowing interception and handling of traffic to quad-100.
With this hook wired, magicDNS queries over UDP are now handled within
netstack. The existing logic in wgengine to handle magicDNS remains for now,
but its hook operates after the netstack hook so the netstack implementation
takes precedence. This is done in case we need to support platforms with
netstack longer than expected.
Signed-off-by: Tom DNetto <tom@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>
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>
There was a typo in the check it was doing `!ok` instead of `ok`, this
restructures it a bit to read better.
Fixes#4506
Signed-off-by: Maisem Ali <maisem@tailscale.com>
Like we did in ead16b24ec for tailscaled.
Updates #4258
Due to golang/go#51759
Change-Id: I6effcea7c5f2ec264b9711f4c316f8fca09490f1
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Also move KubeStore and MemStore into their own package.
RELNOTE: tsnet now supports providing a custom ipn.StateStore.
Signed-off-by: Maisem Ali <maisem@tailscale.com>
Disabled by default.
To use, run tailscaled with:
TS_SSH_ALLOW_LOGIN=you@bar.com
And enable with:
$ TAILSCALE_USE_WIP_CODE=true tailscale up --ssh=true
Then ssh [any-user]@[your-tailscale-ip] for a root bash shell.
(both the "root" and "bash" part are temporary)
Updates #3802
Change-Id: I268f8c3c95c8eed5f3231d712a5dc89615a406f0
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
And simplify, unexport some tsdial/netstack stuff in the the process.
Fixes#3475
Change-Id: I186a5a5cbd8958e25c075b4676f7f6e70f3ff76e
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This starts to refactor tsdial.Dialer's name resolution to have
different stages: in-memory MagicDNS vs system resolution. A future
change will plug in ExitDNS resolution.
This also plumbs a Dialer into netstack and unexports the dnsMap
internals.
And it removes some of the async AddNetworkMapCallback usage and
replaces it with synchronous updates of the Dialer's netmap
from LocalBackend, since the LocalBackend has the Dialer too.
Updates #3475
Change-Id: Idcb7b1169878c74f0522f5151031ccbc49fe4cb4
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Not done yet, but this move more of the outbound dial special casing
from random packages into tsdial, which aspires to be the one unified
place for all outbound dialing shenanigans.
Then this plumbs it all around, so everybody is ultimately
holding on to the same dialer.
As of this commit, macOS/iOS using an exit node should be able to
reach to the exit node's DoH DNS proxy over peerapi, doing the sockopt
to stay within the Network Extension.
A number of steps remain, including but limited to:
* move a bunch more random dialing stuff
* make netstack-mode tailscaled be able to use exit node's DNS proxy,
teaching tsdial's resolver to use it when an exit node is in use.
Updates #1713
Change-Id: I1e8ee378f125421c2b816f47bc2c6d913ddcd2f5
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Even if not in use. We plan to use it for more stuff later.
(not for iOS or macOS-GUIs yet; only tailscaled)
Change-Id: Idaef719d2a009be6a39f158fd8f57f8cca68e0ee
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
