The new "tailscale up" checks previously didn't protect against
--advertise-exit-node being omitted in the case that
--advertise-routes was also provided. It wasn't done before because
there is no corresponding pref for "--advertise-exit-node"; it's a
helper flag that augments --advertise-routes. But that's an
implementation detail and we can still help users. We just have to
special case that pref and look whether the current routes include
both the v4 and v6 /0 routes.
Fixes#1767
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This doesn't make --operator implicit (which we might do in the
future), but it at least doesn't require repeating it in the future
when it already matches $USER.
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
With this change, the ipnserver's safesocket.Listen (the localhost
tcp.Listen) happens right away, before any synchronous
TUN/DNS/Engine/etc setup work, which might be slow, especially on
early boot on Windows.
Because the safesocket.Listen starts up early, that means localhost
TCP dials (the safesocket.Connect from the GUI) complete successfully
and thus the GUI avoids the MessageBox error. (I verified that
pacifies it, even without a Listener.Accept; I'd feared that Windows
localhost was maybe special and avoided the normal listener backlog).
Once the GUI can then connect immediately without errors, the various
timeouts then matter less, because the backend is no longer trying to
race against the GUI's timeout. So keep retrying on errors for a
minute, or 10 minutes if the system just booted in the past 10
minutes.
This should fix the problem with Windows 10 desktops auto-logging in
and starting the Tailscale frontend which was then showing a
MessageBox error about failing to connect to tailscaled, which was
slow coming up because the Windows networking stack wasn't up
yet. Fingers crossed.
Fixes#1313 (previously #1187, etc)
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This change implements Windows version of install-system-daemon and
uninstall-system-daemon subcommands. When running the commands the
user will install or remove Tailscale Windows service.
Updates #1232
Signed-off-by: Alex Brainman <alex.brainman@gmail.com>
Logout used to be a no-op, so the ipnserver previously synthensized a Logout
on disconnect. Now that Logout actually invalidates the node key that was
forcing all GUI closes to log people out.
Instead, add a method to LocalBackend to specifically mean "the
Windows GUI closed, please forget all the state".
Fixestailscale/corp#1591 (ignoring the notification issues, tracked elsewhere)
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
On macOS, we link the CLI into the GUI executable so it can be included in
the Mac App Store build.
You then need to run it like:
/Applications/Tailscale.app/Contents/MacOS/Tailscale <command>
But our old detection of whether you're running that Tailscale binary
in CLI mode wasn't accurate and often bit people. For instance, when
they made a typo, it then launched in GUI mode and broke their
existing GUI connection (starting a new IPNExtension) and took down
their network.
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
The ipn.NewPrefs func returns a populated ipn.Prefs for historical
reasons. It's not used or as important as it once was, but it hasn't
yet been removed. Meanwhile, it contains some default values that are
used on some platforms. Notably, for this bug (#1725), Windows/Mac use
its Prefs.RouteAll true value (to accept subnets), but Linux users
have always gotten a "false" value for that, because that's what
cmd/tailscale's CLI default flag is _for all operating systems_. That
meant that "tailscale up" was rightfully reporting that the user was
changing an implicit setting: RouteAll was changing from true with
false with the user explicitly saying so.
An obvious fix might be to change ipn.NewPrefs to return
Prefs.RouteAll == false on some platforms, but the logic is
complicated by darwin: we want RouteAll true on windows, android, ios,
and the GUI mac app, but not the CLI tailscaled-on-macOS mode. But
even if we used build tags (e.g. the "redo" build tag) to determine
what the default is, that then means we have duplicated and differing
"defaults" between both the CLI up flags and ipn.NewPrefs. Furthering
that complication didn't seem like a good idea.
So, changing the NewPrefs defaults is too invasive at this stage of
the release, as is removing the NewPrefs func entirely.
Instead, tweak slightly the semantics of the ipn.Prefs.ControlURL
field. This now defines that a ControlURL of the empty string means
both "we're uninitialized" and also "just use the default".
Then, once we have the "empty-string-means-unintialized" semantics,
use that to suppress "tailscale up"'s recent implicit-setting-revert
checking safety net, if we've never initialized Tailscale yet.
And update/add tests.
Fixes#1725
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Will add more tests later but this locks in all the existing warnings
and errors at least, and some of the existing non-error behavior.
Mostly I want this to exist before I actually fix#1725.
Updates #1725
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
They were scattered/duplicated in misc places before.
It can't be in the client package itself for circular dep reasons.
This new package is basically tailcfg but for localhost
communications, instead of to control.
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This changes the behavior of "tailscale up".
Previously "tailscale up" always did a new Start and reset all the settings.
Now "tailscale up" with no flags just brings the world [back] up.
(The opposite of "tailscale down").
But with flags, "tailscale up" now only is allowed to change
preferences if they're explicitly named in the flags. Otherwise it's
an error. Or you need to use --reset to explicitly nuke everything.
RELNOTE=tailscale up change
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
It was only Linux and BSDs before, but now with netstack mode, it also works on
Windows and darwin. It's not worth limiting it to certain platforms.
Tailscaled itself can complain/fail if it doesn't like the settings
for the mode/OS it's operating under.
Updates #707
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
We already had SetNotifyCallback elsewhere on controlclient, so use
that name.
Baby steps towards some CLI refactor work.
Updates tailscale/tailscale#1436
This is usually the same as the requested interface, but on some
unixes can vary based on device number allocation, and on Windows
it's the GUID instead of the pretty name, since everything relating
to configuration wants the GUID.
Signed-off-by: David Anderson <danderson@tailscale.com>
Upstream wireguard-go has changed its receive model.
NewDevice now accepts a conn.Bind interface.
The conn.Bind is stateless; magicsock.Conns are stateful.
To work around this, we add a connBind type that supports
cheap teardown and bring-up, backed by a Conn.
The new conn.Bind allows us to specify a set of receive functions,
rather than having to shoehorn everything into ReceiveIPv4 and ReceiveIPv6.
This lets us plumbing DERP messages directly into wireguard-go,
instead of having to mux them via ReceiveIPv4.
One consequence of the new conn.Bind layer is that
closing the wireguard-go device is now indistinguishable
from the routine bring-up and tear-down normally experienced
by a conn.Bind. We thus have to explicitly close the magicsock.Conn
when the close the wireguard-go device.
One downside of this change is that we are reliant on wireguard-go
to call receiveDERP to process DERP messages. This is fine for now,
but is perhaps something we should fix in the future.
Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
The bool was already called useNetstack at the caller.
isUserspace (to mean netstack) is confusing next to wgengine.NewUserspaceEngine, as that's
a different type of 'userspace'.
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
The resolver still only supports a single upstream config, and
ipn/wgengine still have to split up the DNS config, but this moves
closer to unifying the DNS configs.
As a handy side-effect of the refactor, IPv6 MagicDNS records exist
now.
Signed-off-by: David Anderson <danderson@tailscale.com>
This adds a new ipn.MaskedPrefs embedding a ipn.Prefs, along with a
bunch of "has bits", kept in sync with tests & reflect.
Then it adds a Prefs.ApplyEdits(MaskedPrefs) method.
Then the ipn.Backend interface loses its weirdo SetWantRunning(bool)
method (that I added in 483141094c for "tailscale down")
and replaces it with EditPrefs (alongside the existing SetPrefs for now).
Then updates 'tailscale down' to use EditPrefs instead of SetWantRunning.
In the future, we can use this to do more interesting things with the
CLI, reconfiguring only certain properties without the reset-the-world
"tailscale up".
Updates #1436
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Adding a subcommand which prints and logs a log marker. This should help
diagnose any issues that users face.
Fixes#1466
Signed-off-by: Maisem Ali <maisem@tailscale.com>
Instead of having the CLI check whether IP forwarding is enabled, ask
tailscaled. It has a better idea. If it's netstack, for instance, the
sysctl values don't matter. And it's possible that only the daemon has
permission to know.
Fixes#1626
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Without this, `tailscale status` ignores the --socket flag on macOS and
always talks to the IPNExtension, even if you wanted it to inspect a
userspace tailscaled.
Signed-off-by: David Crawshaw <crawshaw@tailscale.com>
For discovery when an explicit hostname/IP is known. We'll still
also send it via control for finding peers by a list.
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This makes setup more explicit in prod codepaths, without
requiring a bunch of arguments or helpers for tests and
userspace mode.
Signed-off-by: David Anderson <danderson@tailscale.com>
control/controlclient: sign RegisterRequest
Some customers wish to verify eligibility for devices to join their
tailnets using machine identity certificates. TLS client certs could
potentially fulfill this role but the initial customer for this feature
has technical requirements that prevent their use. Instead, the
certificate is loaded from the Windows local machine certificate store
and uses its RSA public key to sign the RegisterRequest message.
There is room to improve the flexibility of this feature in future and
it is currently only tested on Windows (although Darwin theoretically
works too), but this offers a reasonable starting place for now.
Updates tailscale/coral#6
Signed-off-by: Adrian Dewhurst <adrian@tailscale.com>
So we can empty import the guts of cmd/tailscaled from another
module for go mod tidy reasons.
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This adds an easy and portable way for us to document how to get
your Tailscale IP address.
$ tailscale ip
100.74.70.3
fd7a:115c:a1e0:ab12:4843:cd96:624a:4603
$ tailscale ip -4
100.74.70.3
$ tailscale ip -6
fd7a:115c:a1e0:ab12:4843:cd96:624a:4603
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Add proto to flowtrack.Tuple.
Add types/ipproto leaf package to break a cycle.
Server-side ACL work remains.
Updates #1516
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Mash up some code from ffcli and std's flag package to make a default
usage func that's super explicit for those not familiar with the Go
style flags. Only show double hyphens in usage text (but still accept both),
and show default values, and only show the proper usage of boolean flags.
Fixes#1353Fixes#1529
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This reverts the revert commit 84aba349d9.
And changes us to use inet.af/netstack.
Updates #1518
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
gVisor fixed their google/gvisor#1446 so we can include gVisor mode
on 32-bit machines.
A few minor upstream API changes, as normal.
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This change makes it impossible to set your own IP address as the exit node for this system.
Fixes#1489
Signed-off-by: Christine Dodrill <xe@tailscale.com>
This reverts commit 08949d4ef1.
I think this code was aspirational. There's no code that sets up the
appropriate NAT code using pfctl/etc. See #911 and #1475.
Updates #1475
Updates #911
The debub subcommand was moved in
6254efb9ef because the monitor brought
in tons of dependencies to the cmd/tailscale binary, but there wasn't
any need to remove the whole subcommand itself.
Add it back, with a tool to dump the local daemon's goroutines.
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Part of overall effort to clean up, unify, use link monitoring more,
and make Tailscale quieter when all networks are down. This is especially
bad on macOS where we can get killed for not being polite it seems.
(But we should be polite in any case)
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Gets it out of wgengine so the Engine isn't responsible for being a
callback registration hub for it.
This also removes the Engine.LinkChange method, as it's no longer
necessary. The monitor tells us about changes; it doesn't seem to
need any help. (Currently it was only used by Swift, but as of
14dc790137 we just do the same from Go)
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
And add a --socks5-server flag.
And fix a race in SOCKS5 replies where the response header was written
concurrently with the copy from the backend.
Co-authored with Naman Sood.
Updates #707
Updates #504
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Currently it assumes exactly 1 registered callback. This changes it to
support 0, 1, or more than 1.
This is a step towards plumbing wgengine/monitor into more places (and
moving some of wgengine's interface state fetching into monitor in a
later step)
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
For option (d) of #1405.
For an HTTPS request of /bootstrap-dns, this returns e.g.:
{
"log.tailscale.io": [
"2600:1f14:436:d603:342:4c0d:2df9:191b",
"34.210.105.16"
],
"login.tailscale.com": [
"2a05:d014:386:203:f8b4:1d5a:f163:e187",
"3.121.18.47"
]
}
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
* move probing out of netcheck into new net/portmapper package
* use PCP ANNOUNCE op codes for PCP discovery, rather than causing
short-lived (sub-second) side effects with a 1-second-expiring map +
delete.
* track when we heard things from the router so we can be less wasteful
in querying the router's port mapping services in the future
* use portmapper from magicsock to map a public port
Fixes#1298Fixes#1080Fixes#1001
Updates #864
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
And open up socket permissions like Linux, now that we know who
connections are from.
This uses the new inet.af/peercred that supports Linux and Darwin at
the moment.
Fixes#1347Fixes#1348
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This one alone doesn't modify the global dependency map much
(depaware.txt if anything looks slightly worse), but it leave
controlclient as only containing NetworkMap:
bradfitz@tsdev:~/src/tailscale.com/ipn$ grep -F "controlclient." *.go
backend.go: NetMap *controlclient.NetworkMap // new netmap received
fake_test.go: b.notify(Notify{NetMap: &controlclient.NetworkMap{}})
fake_test.go: b.notify(Notify{NetMap: &controlclient.NetworkMap{}})
handle.go: netmapCache *controlclient.NetworkMap
handle.go:func (h *Handle) NetMap() *controlclient.NetworkMap {
Once that goes into a leaf package, then ipn doesn't depend on
controlclient at all, and then the client gets smaller.
Updates #1278
