Commit Graph

351 Commits

Author SHA1 Message Date
Brad Fitzpatrick
16f3520089 all: add arbitrary capability support
Updates #4217

RELNOTE=start of WhoIsResponse capability support

Change-Id: I6522998a911fe49e2f003077dad6164c017eed9b
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2022-04-17 09:01:53 -07:00
Brad Fitzpatrick
8ee044ea4a ssh/tailssh: make the SSH server a singleton, register with LocalBackend
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>
2022-04-15 13:45:39 -07:00
Brad Fitzpatrick
df9ce972c7 tailcfg, ipn/ipnlocal: add debug flag to enable one-big-CGNAT/10 route
To experiment with avoiding Chrome ERR_NETWORK_CHANGED errors on route
changes.

Updates #3102

Change-Id: I339da14c684fdac45ac261566aa21bf2198672ff
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2022-04-14 14:47:42 -07:00
Maisem Ali
50b4b8b2c6 ipn/ipnlocal: make peerIPs return a sorted slice
Currently peerIPs doesn't do any sorting of the routes it returns. This
is typically fine, however imagine the case of an HA subnet router
failover. When a route R moves from peer A to peer B, the output of
peerIPs changes. This in turn causes all the deephash check inside
wgengine to fail as the hashed value of [R1, R2] is different than
the hashed value of [R2, R1]. When the hash check failes, it causes
wgengine to reconfigure all routes in the OS. This is especially
problematic for macOS and iOS where we use the NetworkExtension.

This commit makes it that the peerIPs are always sorted when returned,
thus making the hash be consistent as long as the list of routes remains
static.

Signed-off-by: Maisem Ali <maisem@tailscale.com>
2022-04-13 16:30:17 -07:00
Brad Fitzpatrick
3ae701f0eb net/tsaddr, wgengine/netstack: add IPv6 range that forwards to site-relative IPv4
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>
2022-04-11 17:26:07 -07:00
Maisem Ali
309ddef852
net/netutil: add CheckIPForwardingLinux (#4301)
Combine the code between `LocalBackend.CheckIPForwarding` and
`controlclient.ipForwardingBroken`.

Fixes #4300

Signed-off-by: Maisem Ali <maisem@tailscale.com>
2022-03-28 10:24:11 -07:00
Brad Fitzpatrick
5a44f9f5b5 tempfork: temporarily fork gliderlabs/ssh and x/crypto/ssh
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>
2022-03-26 21:07:01 -07:00
Maisem Ali
6fecc16c3b ipn/ipnlocal: do not process old status messages received out of order
When `setWgengineStatus` is invoked concurrently from multiple
goroutines, it is possible that the call invoked with a newer status is
processed before a call with an older status. e.g. a status that has
endpoints might be followed by a status without endpoints. This causes
unnecessary work in the engine and can result in packet loss.

This patch adds an `AsOf time.Time` field to the status to specifiy when the
status was calculated, which later allows `setWgengineStatus` to ignore
any status messages it receives that are older than the one it has
already processed.

Updates tailscale/corp#2579

Signed-off-by: Maisem Ali <maisem@tailscale.com>
2022-03-26 20:23:50 -07:00
Brad Fitzpatrick
cceacda5eb ipn/ipnstate: put SSH Host Keys in ipnstate.PeerStatus
Updates #3802

Change-Id: I47ba3b4545b25988f375bd867aecd98bb0da8d79
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2022-03-25 12:14:39 -07:00
Brad Fitzpatrick
d2f3ec8a63 envknob, ipn/ipnlocal: add SSH admin kill switch
Updates #3802

Change-Id: I6127907446d1a6be1b097d9ba3b534f2b8eb707f
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2022-03-23 15:40:30 -07:00
Brad Fitzpatrick
f3b13604b3 control/controlclient, ipn/ipnlocal, tailcfg: add MapResponse.PopBrowserURL
Updates #3802

Change-Id: I89481fc5782a0cc8084354706f8f28d94f197325
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2022-03-22 09:37:00 -07:00
Josh Bleecher Snyder
0868329936 all: use any instead of interface{}
My favorite part of generics.

Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
2022-03-17 11:35:09 -07:00
Maisem Ali
6b9d938c1a types/views: add generic Slice[T] and remove StringSlice
Also make IPPrefixSliceOf use Slice[netaddr.IPPrefix] as it also
provides additional functions besides the standard ones provided by
Slice[T].

Signed-off-by: Maisem Ali <maisem@tailscale.com>
2022-03-16 22:13:16 -07:00
Brad Fitzpatrick
efc48b0578 ssh/tailssh, ipnlocal, controlclient: fetch next SSHAction from network
Updates #3802

Change-Id: I08e98805ab86d6bbabb6c365ed4526f54742fd8e
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2022-03-10 13:41:08 -08:00
Maisem Ali
888e50e1f6 ipn/ipnlocal: migrate all platforms to controlplane.tailscale.com
Updates #3488

Signed-off-by: Maisem Ali <maisem@tailscale.com>
2022-03-09 21:14:06 -08:00
Nick O'Neill
1625e87526
control/controlclient, localapi: shorten expiry time via localapi (#4112)
Signed-off-by: Nick O'Neill <nick@tailscale.com>
2022-03-09 14:42:42 -08:00
Brad Fitzpatrick
d5f8f38ac6 tailcfg: rename map request version to "capability version"
And add a CapabilityVersion type, primarily for documentation.

This makes MapRequest.Version, RegisterRequest.Version, and
SetDNSRequest.Version all use the same version, which will avoid
confusing in the future if Register or SetDNS ever changed their
semantics on Version change. (Currently they're both always 1)

This will requre a control server change to allow a
SetDNSRequest.Version value other than 1 to be deployed first.

Change-Id: I073042a216e0d745f52ee2dbc45cf336b9f84b7c
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2022-03-06 14:29:08 -08:00
Maisem Ali
497324ddf6 ipn/store: add common package for instantiating ipn.StateStores
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>
2022-02-28 13:23:33 -08:00
Brad Fitzpatrick
c9eca9451a ssh: make it build on darwin
For local dev testing initially. Product-wise, it'll probably only be
workable on the two unsandboxed builds.

Updates #3802

Change-Id: Ic352f966e7fb29aff897217d79b383131bf3f92b
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2022-02-24 13:00:45 -08:00
Brad Fitzpatrick
c4a6d9fa5d ipn/ipnlocal: generate tailscaled-owned SSH keys as needed
Updates #3802

Change-Id: Ie1bc9ae3f3639603b88b4e19b7eb12bea528ff77
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2022-02-24 12:15:57 -08:00
Brad Fitzpatrick
bb94561c96 net/netutil: fix regression where peerapi would get closed after 1st req
I introduced a bug in 8fe503057d when unifying oneConnListener
implementations.

The NewOneConnListenerFrom API was easy to misuse (its Close method
closes the underlying Listener), and we did (via http.Serve, which
closes the listener after use, which meant we were close the peerapi's
listener, even though we only wanted its Addr)

Instead, combine those two constructors into one and pass in the Addr
explicitly, without delegating through to any Listener.

Change-Id: I061d7e5f842e0cada416e7b2dd62100d4f987125
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2022-02-22 13:52:18 -08:00
Maisem Ali
c7a8f0992d ipn/ipnlocal: use views for Peer.PrimaryRoutes and Peer.Tags
RELNOTE=`tailscale status --json` now shows Tags and PrimaryRoutes

Signed-off-by: Maisem Ali <maisem@tailscale.com>
2022-02-22 10:09:02 -08:00
Maisem Ali
9cbb0913be ipn/{ipnlocal,ipnstate}: add Tags and PrimaryRoutes to PeerStatus
Signed-off-by: Maisem Ali <maisem@tailscale.com>
2022-02-21 20:06:48 -08:00
Maisem Ali
f9a50779e2 cmd/tailscaled: add -state=mem: to support creation of an ephemeral node.
RELNOTE=`tailscaled --state=mem:` registers as an ephemeral node and
does not store state to disk.

Signed-off-by: Maisem Ali <maisem@tailscale.com>
2022-02-18 13:40:39 -08:00
Brad Fitzpatrick
84138450a4 types/logger, logtail: add mechanism to do structured JSON logs
e.g. the change to ipnlocal in this commit ultimately logs out:

{"logtail":{"client_time":"2022-02-17T20:40:30.511381153-08:00","server_time":"2022-02-18T04:40:31.057771504Z"},"type":"Hostinfo","val":{"GoArch":"amd64","Hostname":"tsdev","IPNVersion":"1.21.0-date.20220107","OS":"linux","OSVersion":"Debian 11.2 (bullseye); kernel=5.10.0-10-amd64"},"v":1}

Change-Id: I668646b19aeae4a2fed05170d7b279456829c844
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2022-02-18 12:42:06 -08:00
Brad Fitzpatrick
bb93e29d5c tailcfg, ipn/ipnlocal: add Hostinfo.SSH_HostKeys, send when SSH enabled
(The name SSH_HostKeys is bad but SSHHostKeys is worse.)

Updates #3802

Change-Id: I2a889019c9e8b065b668dd58140db4fcab868a91
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2022-02-17 15:46:57 -08:00
Brad Fitzpatrick
fbff1555fc ipnlocal, tailssh: start moving host key stuff into the right spot
Make tailssh ask LocalBackend for the SSH hostkeys, as we'll need to
distribute them to peers.

For now only the hacky use-same-as-actual-host mode is implemented.

Updates #3802

Change-Id: I819dcb25c14e42e6692c441186c1dc744441592b
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2022-02-17 14:01:50 -08:00
Maisem Ali
72d8672ef7 tailcfg: make Node.Hostinfo a HostinfoView
Signed-off-by: Maisem Ali <maisem@tailscale.com>
2022-02-16 12:55:57 -08:00
Ross Zurowski
6d02a48d8d
ipn: add TailnetStatus field to tailscale status --json (#3865)
We need to capture some tailnet-related information for some Docker
features we're building. This exposes the tailnet name and MagicDNS
information via `tailscale status --json`.

Fixes tailscale/corp#3670

Signed-off-by: Ross Zurowski <ross@rosszurowski.com>
2022-02-15 12:36:01 -05:00
Brad Fitzpatrick
01e8a152f7 ipn/ipnlocal: log most of Hostinfo once non-verbose at start-up
Our previous Hostinfo logging was all as a side effect of telling
control. And it got marked as verbose (as it was)

This adds a one-time Hostinfo logging that's not verbose, early in
start-up.

Change-Id: I1896222b207457b9bb12ffa7cf361761fa4d3b3a
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2022-02-14 12:33:35 -08:00
Brad Fitzpatrick
8fe503057d net/netutil: unify two oneConnListeners into a new package
I was about to add a third copy, so unify them now instead.

Change-Id: I3b93896aa1249b1250a6b1df4829d57717f2311a
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2022-02-13 14:57:27 -08:00
Brad Fitzpatrick
a19c110dd3 envknob: track, log env knobs in use
Fixes #3921

Change-Id: I8186053b5c09c43f0358b4e7fdd131361a6d8f2e
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2022-02-12 21:56:10 -08:00
Brad Fitzpatrick
2db6cd1025 ipn/ipnlocal, wgengine/magicsock, logpolicy: quiet more logs
Updates #1548

Change-Id: Ied169f872e93be2857890211f2e018307d4aeadc
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2022-02-12 16:42:29 -08:00
Brad Fitzpatrick
86a902b201 all: adjust some log verbosity
Updates #1548

Change-Id: Ia55f1b5dc7dfea09a08c90324226fb92cd10fa00
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2022-02-12 08:51:16 -08:00
Brad Fitzpatrick
bd90781b34 ipn/ipnlocal, wgengine/netstack: use netstack for peerapi server
We're finding a bunch of host operating systems/firewalls interact poorly
with peerapi. We either get ICMP errors from the host or users need to run
commands to allow the peerapi port:

https://github.com/tailscale/tailscale/issues/3842#issuecomment-1025133727

... even though the peerapi should be an internal implementation detail.

Rather than fight the host OS & firewalls, this change handles the
server side of peerapi entirely in netstack (except on iOS), so it
never makes its way to the host OS where it might be messed with. Two
main downsides are:

1) netstack isn't as fast, but we don't really need speed for peerapi.
   And actually, with fewer trips to/from the kernel, we might
   actually make up for some of the netstack performance loss by
   staying in userspace.

2) tcpdump / Wireshark etc packet captures will no longer see the peerapi
   traffic. Oh well. Crawshaw's been wanting to add packet capture server
   support to tailscaled, so we'll probably do that sooner now.

A future change might also then use peerapi for the client-side
(except on iOS).

Updates #3842 (probably fixes, as well as many exit node issues I bet)

Change-Id: Ibc25edbb895dc083d1f07bd3cab614134705aa39
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2022-01-31 14:20:08 -08:00
Brad Fitzpatrick
857cd6c0d7 ipn/ipnstate: add TailnetName to status
RELNOTE=tailscale status --json | jq .TailnetName

Fixes tailscale/corp#3665

Change-Id: I85de027ba2781eb31ee1e0c5ab913b0dfa5b4c86
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2022-01-26 10:08:39 -08:00
Brad Fitzpatrick
f3c0023add wgengine/netstack: add an SSH server experiment
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>
2022-01-24 19:14:13 -08:00
Brad Fitzpatrick
41fd4eab5c envknob: add new package for all the strconv.ParseBool(os.Getenv(..))
A new package can also later record/report which knobs are checked and
set. It also makes the code cleaner & easier to grep for env knobs.

Change-Id: Id8a123ab7539f1fadbd27e0cbeac79c2e4f09751
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2022-01-24 11:51:23 -08:00
Brad Fitzpatrick
3690bfecb0 ipn/ipnlocal: fix cert fetching on macOS GUI platforms
And clarify the directory they get written to when under the sandbox.

Fixes #3667

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2022-01-06 07:59:20 -08:00
Brad Fitzpatrick
506c727e30 ipnlocal, net/{dns,tsaddr,tstun}, wgengine: support MagicDNS on IPv6
Fixes #3660

RELNOTE=MagicDNS now works over IPv6 when CGNAT IPv4 is disabled.

Change-Id: I001e983df5feeb65289abe5012dedd177b841b45
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2022-01-04 14:37:22 -08:00
Brad Fitzpatrick
b09000ad5d ipn/localapi: add debug handler to Rebind, ReSTUN magicsock
And more later probably.

Updates #3619

Change-Id: Ia4cba34a7c0dcce4d2eddec8aae17f32b51c207f
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-12-28 15:13:44 -08:00
Brad Fitzpatrick
0aa4c6f147 net/dns/resolver: add debug HTML handler to see what DNS traffic was forwarded
Change-Id: I6b790e92dcc608515ac8b178f2271adc9fd98f78
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-12-21 14:32:36 -08:00
Brad Fitzpatrick
ae319b4636 wgengine/magicsock: add HTML debug handler to see magicsock state
Change-Id: Ibc46f4e9651e1c86ec6f5d139f5e9bdc7a488415
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-12-21 14:26:52 -08:00
Josh Bleecher Snyder
add6dc8ccc ipn/ipnlocal: make TestShrinkDefaultRoute hermetic
Make shrinkDefaultRoute a pure function.
Instead of calling interfaceRoutes, accept that information as parameters.
Hard-code those parameters in TestShrinkDefaultRoute.

Fixes #3580

Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
2021-12-16 11:31:20 -08:00
Brad Fitzpatrick
8f43ddf1a2 ipn/ipnlocal, health: populate self node's Online bit in tailscale status
One option was to just hide "offline" in the text output, but that
doesn't fix the JSON output.

The next option was to lie and say it's online in the JSON (which then
fixes the "offline" in the text output).

But instead, this sets the self node's "Online" to whether we're in an
active map poll.

Fixes #3564

Change-Id: I9b379989bd14655198959e37eec39bb570fb814a
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-12-16 10:14:08 -08:00
Josh Bleecher Snyder
93ae11105d ipn/ipnlocal: clear magicsock's netmap on logout
magicsock was hanging onto its netmap on logout,
which caused tailscale status to display partial
information about a bunch of zombie peers.
After logout, there should be no peers.

Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
2021-12-15 17:00:08 -08:00
Brad Fitzpatrick
aac974a5e5 ipn/ipnlocal: deflake (mostly) TestStateMachine
I'm sick of this flaking. Even if this isn't the right fix, it
stops the alert fatigue.

Updates #3020

Change-Id: I4001c127d78f1056302f7741adec34210a72ee61
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-12-15 13:41:06 -08:00
Brad Fitzpatrick
486059589b all: gofmt -w -s (simplify) tests
And it updates the build tag style on a couple files.

Change-Id: I84478d822c8de3f84b56fa1176c99d2ea5083237
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-12-15 08:43:41 -08:00
Brad Fitzpatrick
cced414c7d net/dns/resolver: add Windows ExitDNS service support, using net package
Updates #1713
Updates #835

Change-Id: Ia71e96d0632c2d617b401695ad68301b07c1c2ec
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-12-10 20:47:17 -08:00
Brad Fitzpatrick
7b9c7bc42b ipn/ipnstate: remove old deprecated TailAddr IPv4-only field
It's been a bunch of releases now since the TailscaleIPs slice
replacement was added.

Change-Id: I3bd80e1466b3d9e4a4ac5bedba8b4d3d3e430a03
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-12-09 09:28:23 -08:00
Denton Gentry
878a20df29 net/dns: add GetBaseConfig to CallbackRouter.
Allow users of CallbackRouter to supply a GetBaseConfig
implementation. This is expected to be used on Android,
which currently lacks both a) platform support for
Split-DNS and b) a way to retrieve the current DNS
servers.

iOS/macOS also use the CallbackRouter but have platform
support for SplitDNS, so don't need getBaseConfig.

Updates https://github.com/tailscale/tailscale/issues/2116
Updates https://github.com/tailscale/tailscale/issues/988

Signed-off-by: Denton Gentry <dgentry@tailscale.com>
2021-12-08 16:49:11 -08:00
Brad Fitzpatrick
c0701b130d ipn/ipnstate, cmd/tailscale: add Online bool to tailscale status & --json
Fixes #3533

Change-Id: I2f6f0d712cf3f987fba1c15be74cdb5c8d565f04
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-12-08 09:34:15 -08:00
Todd Neal
c18dc57861 ipn/{ipnserver,ipnlocal}: support incoming Taildrop on TrueNAS
Signed-off-by: Todd Neal <todd@tneal.org>
2021-12-07 21:04:58 -08:00
Brad Fitzpatrick
d3d503d997 ipn/ipnlocal: add HTTP/2 h2c server support to peerapi on non-mobile platforms
To make ExitDNS cheaper.

Might not finish client-side support in December before 1.20, but at
least server support can start rolling out ahead of clients being
ready for it.

Tested with curl against peerapi.

Updates #1713

Change-Id: I676fed5fb1aef67e78c542a3bc93bddd04dd11fe
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-12-06 16:39:14 -08:00
Brad Fitzpatrick
abc00e9c8d ipn/{ipnserver,ipnlocal}: support incoming Taildrop on Synology
If the user has a "Taildrop" shared folder on startup and
the "tailscale" system user has read/write access to it,
then the user can "tailscale file cp" to their NAS.

Updates #2179 (would be fixes, but not super ideal/easy yet)

Change-Id: I68e59a99064b302abeb6d8cc84f7d2a09f764990
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-12-06 16:36:24 -08:00
Brad Fitzpatrick
9c5c9d0a50 ipn/ipnlocal, net/tsdial: make SOCKS/HTTP dials use ExitDNS
And simplify, unexport some tsdial/netstack stuff in the the process.

Fixes #3475

Change-Id: I186a5a5cbd8958e25c075b4676f7f6e70f3ff76e
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-12-03 13:39:37 -08:00
Brad Fitzpatrick
adc5997592 net/tsdial: give netstack a Dialer, start refactoring name resolution
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>
2021-12-02 11:33:13 -08:00
Brad Fitzpatrick
43983a4a3b ipn/ipnlocal: run peerapi even if Taildrop storage not configured
Change-Id: I77f9ecbe4617d01d13aa1127fa59c83f2aa3e1b8
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-12-01 16:45:09 -08:00
David Anderson
44d0c1ab06 ipn/ipnlocal: resolve exit node IP to ID at EditPrefs time.
Without this, enabling an exit node immediately blackholes all traffic,
but doesn't correctly let it flow to the exit node until the next netmap
update.

Fixes #3447

Signed-off-by: David Anderson <danderson@tailscale.com>
2021-12-01 15:50:32 -08:00
Brad Fitzpatrick
ad3d6e31f0 net/tsdial: move macOS/iOS peerapi sockopt logic from LocalBackend
Change-Id: I812cae027c40c70cdc701427b1a1850cd9bcd60c
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-12-01 12:55:31 -08:00
Brad Fitzpatrick
c7fb26acdb net/tsdial: also plumb TUN name and monitor into tsdial.Dialer
In prep for moving stuff out of LocalBackend.

Change-Id: I9725aa9c3ebc7275f8c40e040b326483c0340127
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-12-01 10:36:55 -08:00
Brad Fitzpatrick
c37af58ea4 net/tsdial: move more weirdo dialing into new tsdial package, plumb
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>
2021-12-01 10:36:55 -08:00
Brad Fitzpatrick
3ae6f898cf ipn/ipnlocal, net/dns/resolver: use exit node's DoH proxy when available
Updates #1713

Change-Id: I3695a40ec12d2b4e6dac41cf4559daca6dddd68e
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-11-30 17:01:09 -08:00
Brad Fitzpatrick
16abd7e07c ipn/ipnlocal: fix Content-Length in DoH DNS proxy response
Updates #1713

Change-Id: I912d90383b751ad97b32bcec55e8fedbcf4d3db8
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-11-30 17:01:09 -08:00
Brad Fitzpatrick
2a95ee4680 cmd/tailscale, ipn/ipnstate: note which nodes are exit nodes in status
Fixes #3446

Change-Id: Ib41d588e7fa434c02d134fa449f85b0e15083683
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-11-30 16:59:23 -08:00
Brad Fitzpatrick
b811a316bc tailcfg, ipn/ipnlocal: advertise a Service when exit node DNS proxy available
Updates #1713

Change-Id: I20c8e2ad1062d82ef17363414e372133f4c7181e
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-11-29 21:57:06 -08:00
Brad Fitzpatrick
135580a5a8 tailcfg, ipn/ipnlocal, net/dns: forward exit node DNS on Unix to system DNS
Updates #1713

Change-Id: I4c073fec0992d9e01a9a4ce97087d5af0efdc68d
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-11-29 15:25:41 -08:00
Brad Fitzpatrick
c2efe46f72 ipn/ipnlocal: restrict exit node DoH server based on ACL'ed packet filter
Don't be a DoH DNS server to peers unless the Tailnet admin has permitted
that peer autogroup:internet access.

Updates #1713

Change-Id: Iec69360d8e4d24d5187c26904b6a75c1dabc8979
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-11-29 09:56:59 -08:00
David Anderson
097602b3ca ipn/ipnlocal: warn more precisely about IP forwarding issues on linux.
If IP forwarding is disabled globally, but enabled per-interface on all interfaces,
don't complain. If only some interfaces have forwarding enabled, warn that some
subnet routing/exit node traffic may not work.

Fixes #1586

Signed-off-by: David Anderson <danderson@tailscale.com>
2021-11-26 11:03:10 -08:00
David Anderson
33c541ae30 ipn/ipnlocal: populate self status from netmap in ipnlocal, not magicsock.
Fixes #1933

Signed-off-by: David Anderson <danderson@tailscale.com>
2021-11-26 10:56:42 -08:00
Brad Fitzpatrick
25525b7754 net/dns/resolver, ipn/ipnlocal: wire up peerapi DoH server to DNS forwarder
Updates #1713

Change-Id: Ia4ed9d8c9cef0e70aa6d30f2852eaab80f5f695a
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-11-23 18:59:36 -08:00
Josh Bleecher Snyder
955aa188b3 ipn/ipnlocal: fix logging
We were missing an argument here.
Also, switch to %q, in case anything weird
is happening with these strings.

Updates tailscale/corp#461

Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
2021-11-23 13:36:59 -08:00
Brad Fitzpatrick
283ae702c1 ipn/ipnlocal: start adding DoH DNS server to peerapi when exit node
Updates #1713

Change-Id: I8d9c488f779e7acc811a9bc18166a2726198a429
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-11-23 08:21:41 -08:00
Brad Fitzpatrick
4a59a2781a ipn/ipnlocal: export client metrics over peerapi to owner
Updates #3307

Change-Id: I41b1f3c16af5f385575e8d6cea70ae8386504dd8
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-11-18 08:04:00 -08:00
Maisem Ali
d6dde5a1ac ipn/ipnlocal: handle key extensions after key has already expired
Signed-off-by: Maisem Ali <maisem@tailscale.com>
2021-11-08 18:15:09 -08:00
Brad Fitzpatrick
337757a819 ipn/ipnlocal, control/controlclient: don't propagate all map errors to UI
Fixes regression from 81cabf48ec which made
all map errors be sent to the frontend UI.

Fixes #3230

Change-Id: I7f142c801c7d15e268a24ddf901c3e6348b6729c
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-11-03 17:56:54 -07:00
David Anderson
0532eb30db all: replace tailcfg.DiscoKey with key.DiscoPublic.
Signed-off-by: David Anderson <danderson@tailscale.com>
2021-11-03 14:00:16 -07:00
Brad Fitzpatrick
649f7556e8 cmd/tailscaled, ipn: add tailscaled --statedir flag for var directory
Fixes #2932

Change-Id: I1aa2b323ad542386d140f8336bcc4dcbb8310bd0
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-11-03 13:12:38 -07:00
Brad Fitzpatrick
c7bff35fee ipn/ipnlocal: add owner-only debug handler to get process env
For debugging Synology. Like the existing goroutines handler, in that
it's owner-only.

Change-Id: I852f0626be8e1c0b6794c1e062111d14adc3e6ac
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-11-03 13:12:32 -07:00
Josh Bleecher Snyder
3fd5f4380f util/multierr: new package
github.com/go-multierror/multierror served us well.
But we need a few feature from it (implement Is),
and it's not worth maintaining a fork of such a small module.

Instead, I did a clean room implementation inspired by its API.

Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
2021-11-02 17:50:15 -07:00
David Anderson
7e6a1ef4f1 tailcfg: use key.NodePublic in wire protocol types.
Updates #3206.

Signed-off-by: David Anderson <danderson@tailscale.com>
2021-11-02 09:11:43 -07:00
David Anderson
7e8d5ed6f3 ipn: use key.NodePublic instead of tailcfg.NodeKey
Updates #3206

Signed-off-by: David Anderson <danderson@tailscale.com>
2021-11-01 20:32:10 -07:00
David Anderson
c17250cee2 ipn/ipnstate: use key.NodePublic instead of tailcfg.NodeKey.
Updates #3206

Signed-off-by: David Anderson <danderson@tailscale.com>
2021-11-01 20:32:10 -07:00
David Anderson
418adae379 various: use NodePublic.AsNodeKey() instead of tailcfg.NodeKeyFromNodePublic()
Updates #3206

Signed-off-by: David Anderson <danderson@tailscale.com>
2021-10-29 16:19:27 -07:00
David Anderson
eeb97fd89f various: remove remaining uses of key.NewPrivate.
Updates #3206

Signed-off-by: David Anderson <danderson@tailscale.com>
2021-10-29 15:01:12 -07:00
Brad Fitzpatrick
429632d32c ipn/ipnlocal: treat js/wasm interative logins as ephemeral for now
At least until js/wasm starts using browser LocalStorage or something.
But for the foreseeable future, any login from a browser should
be considered ephemeral as the tab can close at any time and lose
the wireguard key, never to be seen again.

Updates #3157

Change-Id: I6c410d86dc7f9f233c3edd623313d9dee2085aac
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-10-29 11:57:12 -07:00
David Anderson
c1d009b9e9 ipn/ipnstate: use key.NodePublic instead of the generic key.Public.
Updates #3206.

Signed-off-by: David Anderson <danderson@tailscale.com>
2021-10-29 10:00:59 -07:00
David Anderson
0c546a28ba types/persist: use new node key type.
Updates #3206

Signed-off-by: David Anderson <danderson@tailscale.com>
2021-10-28 10:29:43 -07:00
Maisem Ali
81cabf48ec control/controlclient,tailcfg: propagate registration errors to the frontend
Signed-off-by: Maisem Ali <maisem@tailscale.com>
2021-10-27 06:57:26 -07:00
Maisem Ali
c6d3f622e9 ipn/ipnlocal: use netaddr.IPSetBuilder when constructing list of interface IPPrefixes.
Signed-off-by: Maisem Ali <maisem@tailscale.com>
2021-10-14 18:53:54 -04:00
Brad Fitzpatrick
ddf3394b40 ipn/ipnlocal: don't try to block localhost traffic when using exit nodes
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-10-14 14:00:45 -07:00
Brad Fitzpatrick
cb4a2c00d1 ipn: remove unused Prefs.OSVersion and Prefs.DeviceModel
iOS and Android no longer use these. They both now (as of today)
use the hostinfo.SetFoo setters instead.

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-10-05 15:18:32 -07:00
Brad Fitzpatrick
67e5fabdbd hostinfo, ipn/ipnlocal: add SetPackage, remove ipnlocal hacks
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-10-05 15:02:35 -07:00
Brad Fitzpatrick
81269fad28 hostinfo: add SetOSVersion like SetDeviceModel, deprecate ipn.Prefs way
Turns out the iOS client has been only sending the OS version it first
started at. This whole hostinfo-via-prefs mechanism was never a good idea.
Start removing it.

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-10-05 13:29:06 -07:00
Brad Fitzpatrick
22a1a5d7cf ipn/ipnlocal: for IPv6-only nodes, publish IPv6 MagicDNS records of peers
See https://github.com/tailscale/tailscale/issues/2970#issuecomment-931885268

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-10-04 08:54:23 -07:00
Brad Fitzpatrick
6d43cbc325 ipn/ipnlocal: make sure mobile clients don't use the old control server URL
The new frontends are better for battery.

Updates #2442
Updates tailscale/corp#2750

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-10-03 14:11:12 -07:00
Brad Fitzpatrick
3b3994f0db ipn{,/localapi,ipnlocal}: infer cert dir from state file location
This fixes "tailscale cert" on Synology where the var directory is
typically like /volume2/@appdata/Tailscale, or any other tailscaled
user who specifies a non-standard state file location.

This is a interim fix on the way to #2932.

Fixes #2927
Updates #2932

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-09-27 15:28:50 -07:00
Brad Fitzpatrick
aae622314e tailcfg, health: add way for control plane to add problems to health check
So if the control plane knows that something's broken about the node, it can
include problem(s) in MapResponse and "tailscale status" will show it.
(and GUIs in the future, as it's in ipnstate.Status/JSON)

This also bumps the MapRequest.Version, though it's not strictly
required. Doesn't hurt.

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-09-19 17:55:49 -07:00
Josh Bleecher Snyder
07c09f470d ipn/ipnlocal: do not shut down the backend halfway through TestStateMachine
LocalBackend.Shutdown's docs say:

> The backend can no longer be used after Shutdown returns.

Nevertheless, TestStateMachine blithely calls Shutdown, talks some smack,
and continues on, expecting things to work. Other uses of Shutdown
in the codebase are as intended.

Things mostly kinda work anyway, except that the wgengine.Engine has been
shut down, so calls to Reconfig fail. Those get logged:

> local.go:603: wgengine status error: engine closing; no status

but otherwise ignored.

However, the Reconfig failure caused one fewer call to pause/unpause
than normal. Now the assertCalls lines match the equivalent ones
earlier in the test.

I don't see an obvious correct replacement for Shutdown in the context
of this test; I'm not sure entirely what it is trying to accomplish.
It is possible that many of the tests remaining after the prior call
to Shutdown are now extraneous. They don't harm anything, though,
so err on the side of safety and leave them for now.

Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
2021-09-17 09:56:32 -07:00
Josh Bleecher Snyder
f834a4ade5 ipn/ipnlocal: fix minor typo in comment
Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
2021-09-17 09:56:32 -07:00