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Author SHA1 Message Date
Brad Fitzpatrick 37903a9056 wgengine/magicsock: fix occasional deadlock on Conn.Close on c.derpStarted 
The deadlock was:

* Conn.Close was called, which acquired c.mu
* Then this goroutine scheduled:

    if firstDerp {
        startGate = c.derpStarted
        go func() {
            dc.Connect(ctx)
            close(c.derpStarted)
        }()
    }

* The getRegion hook for that derphttp.Client then ran, which also
  tries to acquire c.mu.

This change makes that hook first see if we're already in a closing
state and then it can pretend that region doesn't exist.
 2020-07-27 12:27:10 -07:00
Brad Fitzpatrick 38b0c3eea2 version: new week, new version 2020-07-27 10:20:58 -07:00
Brad Fitzpatrick 43e2efe441 go mod tidy 2020-07-27 10:20:30 -07:00
Brad Fitzpatrick fe68841dc7 wgengine/magicsock: log better with less spam on transition to stopped state 
Required a minor test update too, which now needs a private key to get far
enough to test the thing being tested.
 2020-07-27 10:19:17 -07:00
Brad Fitzpatrick 69f3ceeb7c derp/derphttp: don't return all nil from dialRegion when STUNOnly nodes 2020-07-27 10:10:10 -07:00
Brad Fitzpatrick e298327ba8 wgengine/magicsock: remove overkill, slow reflect.DeepEqual of NetworkMap 
No need to allocate or compare all the fields we don't care about.
 2020-07-25 19:37:08 -07:00
Brad Fitzpatrick be3ca5cbfd control/controlclient: remove unused, slow, often-not-what-you-want NetworkMap.Equal 2020-07-25 19:36:39 -07:00
Brad Fitzpatrick 4970e771ab wgengine: add debug knob to disable the watchdog during debugging 
It launches goroutines and interferes with panic-based debugging,
obscuring stacks.
 2020-07-25 12:59:53 -07:00
Brad FitzpatrickandBrad Fitzpatrick 16a9cfe2f4 wgengine: configure wireguard peers lazily, as needed 
wireguard-go uses 3 goroutines per peer (with reasonably large stacks
& buffers).

Rather than tell wireguard-go about all our peers, only tell it about
peers we're actively communicating with. That means we need hooks into
magicsock's packet receiving path and tstun's packet sending path to
lazily create a wireguard peer on demand from the network map.

This frees up lots of memory for iOS (where we have almost nothing
left for larger domains with many users).

We should ideally do this in wireguard-go itself one day, but that'd
be a pretty big change.

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
 2020-07-24 12:50:15 -07:00
Brad Fitzpatrick 5066b824a6 wgengine/magicsock: don't log about disco ping timeouts if we have a working address 
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
 2020-07-24 11:21:50 -07:00
Brad Fitzpatrick 648268192b go.mod: bump wireguard-go 2020-07-24 08:54:17 -07:00
Brad Fitzpatrick a89d610a3d wgengine/tstun: move sync.Pool to package global 
sync.Pools should almost always be packate globals, even though in this
case we only have exactly 1 TUN device anyway, so it matters less.
Still, it's unusual to see a Pool that's not a package global, so move it.
 2020-07-24 08:29:36 -07:00
Brad Fitzpatrick 05a79d79ae control/controlclient: rewrite, test NetworkMap.ConciseDiffFrom 
It stood out a lot in hello.ipn.dev's profiles for generating a lot of
garbage (and thus GC CPU).
 2020-07-23 10:50:06 -07:00
Brad Fitzpatrick 48fc9026e9 tailcfg: optimize Node.Equal allocs a bit 
Noticed while working on something else.
 2020-07-23 10:47:49 -07:00
Brad Fitzpatrick 3b0514ef6d control/controlclient: rename uflags, give it a type, remove dead code 2020-07-23 08:38:14 -07:00
Brad Fitzpatrick 32ecdea157 control/controlclient: generate wireguard config w/o WgQuick text indirection 2020-07-23 08:30:09 -07:00
Brad Fitzpatrick 2545575dd5 cmd/tailscale: default to not reporting daemon version 
That's what I meant to do when I added "tailscale version" but
apparently I didn't.
 2020-07-22 14:05:51 -07:00
Brad Fitzpatrick de11f90d9d ipn: remove unused parameter to func LoadPrefs, fix godoc subject 2020-07-22 10:35:35 -07:00
Brad Fitzpatrick f26b409bd5 tempfork: add lite fork of net/http/pprof w/o html/template or reflect 2020-07-21 16:17:03 -07:00
Brad FitzpatrickandBrad Fitzpatrick 6095a9b423 cmd/tailscale: add "version" subcommand 
Fixes #448

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
 2020-07-21 12:23:33 -07:00
Brad Fitzpatrick f745e1c058 version: new week, new version 2020-07-20 20:55:47 -07:00
Brad FitzpatrickandBrad Fitzpatrick ca2428ecaf tailcfg: add Hostinfo.OSVersion, DeviceModel 
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
 2020-07-20 16:10:06 -07:00
Brad Fitzpatrick d8e67ca2ab safesocket: gofmt 
gofmt differences between versions :(
 2020-07-20 14:40:19 -07:00
Brad Fitzpatrick f562c35c0d safesocket: support connecting to Mac TCP server from within App Sandbox 2020-07-20 14:23:50 -07:00
Brad Fitzpatrick f267a7396f metrics: add LabelMap.GetFloat 2020-07-19 12:31:12 -07:00
Brad Fitzpatrick c06d2a8513 wgengine/magicsock: fix typo in comment 2020-07-18 13:57:26 -07:00
Brad Fitzpatrick bf195cd3d8 wgengine/magicsock: reduce log verbosity of discovery messages 
Don't log heartbeat pings & pongs. Track the reason for pings and then
only log the ping/pong traffic if it was for initial path discovery.
 2020-07-18 13:54:00 -07:00
Brad Fitzpatrick 7cf50f6c84 go.sum: update 2020-07-18 13:43:11 -07:00
Brad Fitzpatrick 52969bdfb0 derp: fix atomic padding on 32-bit again 
Broken by earlier OnlyDisco addition.
 2020-07-16 13:38:21 -07:00
Brad Fitzpatrick a6559a8924 wgengine/magicsock: run test DERP in mode where only disco packets allowed 
So we don't accidentally pass a NAT traversal test by having DERP pick up our slack
when we really just wanted DERP as an OOB messaging channel.
 2020-07-16 12:58:35 -07:00
Brad FitzpatrickandBrad Fitzpatrick 75e1cc1dd5 github/workflows: add go vet ./... step 2020-07-16 09:15:09 -07:00
Brad Fitzpatrick 10ac066013 all: fix vet warnings 2020-07-16 08:39:38 -07:00
Brad FitzpatrickandBrad Fitzpatrick d74c9aa95b wgengine/magicsock: update comment, fix earlier commit 
https://github.com/tailscale/tailscale/commit/891898525c12630b0f896cb9142ff5274e07afc2 had a continue that meant the didCopy synchronization never ran.
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
 2020-07-16 08:29:38 -07:00
Brad Fitzpatrick c976264bd1 wgengine/magicsock: gofmt 2020-07-16 08:15:27 -07:00
Brad FitzpatrickandBrad Fitzpatrick 1f923124bf ipn/ipnserver: support simultaneous connections 
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
 2020-07-15 21:39:09 -07:00
Brad Fitzpatrick a2267aae99 wgengine: only launch pingers for peers predating the discovery protocol 
Peers advertising a discovery key know how to speak the discovery
protocol and do their own heartbeats to get through NATs and keep NATs
open. No need for the pinger except for with legacy peers.
 2020-07-15 21:08:26 -07:00
Brad Fitzpatrick cdfea347d0 wgengine: update for tailscale/wireguard-go API changes 
* update to new HandshakeDone signature
* use new Device.IpcGetOperationFiltered call to avoid sending allowed_ips

See https://github.com/tailscale/wireguard-go/commit/dd6c1c8fe14c1af4fc8ef599ff99c302e289b553
 2020-07-15 20:30:45 -07:00
Brad Fitzpatrick 44baa3463f cmd/tailscale/cli: add initial predicate func ActLikeCLI 2020-07-15 18:56:07 -07:00
Brad Fitzpatrick 723b9eecb0 net/interfaces: set SysProcAttr.HideWindow to prevent cmd.exe flash on Windows 2020-07-15 12:43:48 -07:00
Brad Fitzpatrick df674d4189 atomicfile: don't Chmod on windows 
Not supported.
 2020-07-15 12:31:40 -07:00
Brad Fitzpatrick 7ba148e54e cmd/tailscale: make tailscale status -active also filter in -json mode 2020-07-15 09:28:37 -07:00
Brad Fitzpatrick 60f4982f9b cmd/tailscale: move code into new reusable cmd/tailscale/cli package 
cmd/tailscale's package main is now just a few lines.

This'll let us embed the CLI in the Mac and Windows clients.

Updates #541
 2020-07-15 07:58:29 -07:00
Brad FitzpatrickandBrad Fitzpatrick bcbd41102c atomicfile: use ioutil.TempFile, sync 
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
 2020-07-14 21:58:06 -07:00
Brad Fitzpatrick 969206fe88 version: new week, new date 2020-07-13 11:52:03 -07:00
Brad Fitzpatrick e589c76e98 cmd/tailscaled: don't require --socket path on windows 2020-07-13 11:30:46 -07:00
Brad Fitzpatrick c1d9e41bef cmd/tailscaled: use "Tailscale" as default TUN device name on Windows 
That's what's used in the Windows GUI version and seems special. If we don't use
that, Windows tries to rename it and fails.
 2020-07-13 09:23:57 -07:00
Brad Fitzpatrick f98706bdb3 paths, cmd/tailscaled: on Windows, don't try to migrate from legacy relay.conf 
Avoids confusing logspam on Windows.
 2020-07-13 08:59:54 -07:00
Brad Fitzpatrick 6255ce55df Revert "version: don't have a third version number form for xcode" 
This reverts commit 5280d039c4.

Turns out to not be possible. The semver form and the human readable
form both must of form x.y.z.
 2020-07-12 14:45:06 -07:00
Brad Fitzpatrick 6c74065053 wgengine/magicsock, tstest/natlab: start hooking up natlab to magicsock 
Also adds ephemeral port support to natlab.

Work in progress.

Pairing with @danderson.
 2020-07-10 14:32:58 -07:00
Brad Fitzpatrick edcbb5394e go.sum: update 2020-07-10 14:31:29 -07:00
Brad FitzpatrickandBrad Fitzpatrick 7815633821 github: also run 32-bit tests on Linux 
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
 2020-07-10 08:43:12 -07:00
Brad Fitzpatrick 98ffd78251 go.mod: bump wireguard-go dep 2020-07-09 21:46:44 -07:00
Brad Fitzpatrick dba9b96908 version: remove quoting around version name 
I added them earlier while fighting our redo+xcode build which wasn't
picking up these files on incremental builds. It still isn't, but now I've
verified with full builds that no quotes is correct.
 2020-07-09 14:38:23 -07:00
Brad Fitzpatrick 96994ec431 control/controlclient: fix a couple more data races 2020-07-09 11:42:43 -07:00
Brad Fitzpatrick 0551bec95b cmd/tailscale: add -active flag to 'tailscale status' to filter out inactive peers 2020-07-09 10:38:18 -07:00
Brad Fitzpatrick 96d806789f ipn: add Notify.LocalTCPPort field for macOS Network Extension to use 
We want the macOS Network Extension to share fate with the UI frontend,
so we need the backend to know when the frontend disappears.

One easy way to do that is to reuse the existing TCP server it's
already running (for tailscale status clietns).

We now tell the frontend our ephemeral TCP port number, and then have
the UI connect to it, so the backend can know when it disappears.

There are likely Swift ways of doing this, but I couldn't find them
quickly enough, so I reached for the hammer I knew.
 2020-07-09 09:11:23 -07:00
Brad Fitzpatrick bd59bba8e6 wgengine/magicsock: stop discoEndpoint timers on Close 
And add some defensive early returns on c.closed.
 2020-07-08 16:51:17 -07:00
Brad Fitzpatrick a8b95571fb ipn, control/controlclient: fix some data races 
More remain.

Fixes tailscale/corp#432
 2020-07-08 16:51:17 -07:00
Brad Fitzpatrick de875a4d87 wgengine/magicsock: remove DisableSTUNForTesting 2020-07-08 15:50:41 -07:00
Brad Fitzpatrick ecf5d69c7c net/netcheck: add missing comment asked for in earlier code review 2020-07-08 15:26:56 -07:00
Brad Fitzpatrick 3984f9be2f ipn, ipn/ipnserver: add support for serving in error-message-only mode 
So Windows service failures can be propagated to the Windows UI client.
 2020-07-08 14:20:01 -07:00
Brad FitzpatrickandBrad Fitzpatrick 5280d039c4 version: don't have a third version number form for xcode 
Our primary version format is git describe --long --abbrev=9.

Our Apple scheme is:
    (major+100).minor.(patch*10,000+gitDescribeCommits).

This CL gets rid of the third, which was:
    major.minor.(patch*10,000+gitDescribeCommits).

Now the "About" box in the macOS app shows the same version that we
show on pkgs.tailscale.com, userz, changelog, etc.

This will be more important once/if we get standalone DMG downloads
for macOS on pkgs.tailscale.com.

Fixes tailscale/corp#364
 2020-07-07 21:49:58 -07:00
Brad Fitzpatrick 0d481030f3 tailcfg: use ? for portmap summary to match netcheck 2020-07-07 18:54:50 -07:00
Brad Fitzpatrick ce1b52bb71 wgengine/monitor: fix other potential crashes on Linux 
Never return "nil, nil" anymore. The caller expected a usable
interface now. I missed some of these earlier.

Also, handle address deletion now.

Updates #532
 2020-07-07 11:08:16 -07:00
Brad Fitzpatrick 4b75a27969 wgengine/monitor: fix crash on Linux on type 21 messages 
Fixes #532
 2020-07-07 10:45:25 -07:00
Brad Fitzpatrick c1cabe75dc derp: fix server struct fielfd alignment on 32-bit 
Mostly so the GitHub CI will pass on 32-bit.
 2020-07-07 09:08:15 -07:00
Brad Fitzpatrick 724ad13fe1 wgengine/tstun: fix alignment of 64-bit atomic field 
We had a test for it, but no 32-bit builder apparently. :(

Fixes #529
 2020-07-07 08:28:40 -07:00
Brad FitzpatrickandBrad Fitzpatrick 4db60a8436 wgengine/monitor: parse Linux netlink messages, ignore our own events 
Fixes tailscale/corp#412 ("flood of link change events at start-up")

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
 2020-07-06 22:42:01 -07:00
Brad Fitzpatrick 742b8b44a8 net/tsaddr: new package to hold Tailscale-specific IPs/ranges 
And update existing callers with (near) duplicated cases.
 2020-07-06 22:33:29 -07:00
Brad FitzpatrickandBrad Fitzpatrick 5c6d8e3053 netcheck, tailcfg, interfaces, magicsock: survey UPnP, NAT-PMP, PCP 
Don't do anything with UPnP, NAT-PMP, PCP yet, but see how common they
are in the wild.

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
 2020-07-06 15:25:35 -07:00
Brad Fitzpatrick 6196b7e658 wgengine/magicsock: change API to not permit disco key changes 
Generate the disco key ourselves and give out the public half instead.

Fixes #525
 2020-07-06 12:10:39 -07:00
Brad Fitzpatrick 32156330a8 net/interfaces: add func LikelyHomeRouterIP 
For discovering where we might direct NAT-PMP/PCP/UPnP queries at in
the future.
 2020-07-06 10:38:00 -07:00
Brad Fitzpatrick c3c607e78a util/lineread: add little package to read lines from files/Readers 2020-07-06 10:34:33 -07:00
Brad Fitzpatrick cf74e9039e net/netcheck: add an informative payload in the netcheck UDP helper packets 
Per comment from @normanr:
https://github.com/tailscale/tailscale/commit/0a5ab533c1b8853774587a471ab9c8a0949b1eac#r40401954

Updates #188
 2020-07-06 09:55:11 -07:00
Brad Fitzpatrick 0a5ab533c1 net/netcheck: send dummy packet out to help airport extreme in hairpin check 
At least the Apple Airport Extreme doesn't allow hairpin
sends from a private socket until it's seen traffic from
that src IP:port to something else out on the internet.

See https://github.com/tailscale/tailscale/issues/188#issuecomment-600728643

And it seems that even sending to a likely-filtered RFC 5737
documentation-only IPv4 range is enough to set up the mapping.
So do that for now. In the future we might want to classify networks
that do and don't require this separately. But for now help it.

I've confirmed that this is enough to fix the hairpin check on Avery's
home network, even using the RFC 5737 IP.

Fixes #188
 2020-07-06 08:24:22 -07:00
Brad Fitzpatrick b9a95e6ce1 go.sum: add missing lines 2020-07-06 08:23:44 -07:00
Brad FitzpatrickandBrad Fitzpatrick 0fc15dcbd5 version: explicitly use 9 hex digits in git describe version number 
So it doesn't vary based on who's doing the release with which version
of git.

Fixes tailscale/corp#419
 2020-07-03 22:28:45 -07:00
Brad Fitzpatrick 5132edacf7 wgengine/magicsock: fix data race from undocumented wireguard-go requirement 
Endpoints need to be Stringers apparently.

Fixes tailscale/corp#422
 2020-07-03 22:27:52 -07:00
Brad Fitzpatrick 9fbe8d7cf2 go.mod: bump wireguard 2020-07-03 14:09:29 -07:00
Brad Fitzpatrick c9089c82e8 control/controlclient, tailcfg: turn active route discovery on by default 
Updates #483
 2020-07-03 13:55:33 -07:00
Brad Fitzpatrick 3f74859bb0 version: new month, new date string 2020-07-03 13:47:09 -07:00
Brad Fitzpatrick 630379a1d0 cmd/tailscale: add tailscale status region name, last write, consistently star 
There's a lot of confusion around what tailscale status shows, so make it better:
show region names, last write time, and put stars around DERP too if active.

Now stars are always present if activity, and always somewhere.
 2020-07-03 13:44:22 -07:00
Brad Fitzpatrick 0ea51872c9 types/logger: add rateFreePrefix rate-limiting-exempt log format prefixes 
Per conversation with @danderson.
 2020-07-03 13:09:32 -07:00
Brad Fitzpatrick 9a8700b02a wgengine/magicsock: add discoEndpoint heartbeat 
Updates #483
 2020-07-03 12:43:39 -07:00
Brad Fitzpatrick 9f930ef2bf wgengine/magicsock: remove the discoEndpoint.timers map 
It ended up being more complicated than it was worth.
 2020-07-03 11:45:41 -07:00
Brad Fitzpatrick f5f3885b5b wgengine/magicsock: bunch of misc discovery path cleanups 
* fix tailscale status for peers using discovery
* as part of that, pull out disco address selection into reusable
  and testable discoEndpoint.addrForSendLocked
* truncate ping/pong logged hex txids in half to eliminate noise
* move a bunch of random time constants into named constants
  with docs
* track a history of per-endpoint pong replies for future use &
  status display
* add "send" and " got" prefix to discovery message logging
  immediately before the frame type so it's easier to read than
  searching for the "<-" or "->" arrows earlier in the line; but keep
  those as the more reasily machine readable part for later.

Updates #483
 2020-07-03 11:26:22 -07:00
Brad Fitzpatrick 7883e5c5e7 go.mod: restore staticcheck module, make it stick around, go mod tidy 
It kept coming & going as different people ran go mod tidy and others
ran staticcheck.

Make it stop going away with go mod tidy by adding a dep to it.
 2020-07-02 22:55:14 -07:00
Brad Fitzpatrick 6c70cf7222 wgengine/magicsock: stop ping timeout timer on pong receipt, misc log cleanup 
Updates #483
 2020-07-02 22:54:57 -07:00
Brad Fitzpatrick 97910ce712 tstest/natlab: remove unused PacketConner type 2020-07-02 14:50:04 -07:00
Brad Fitzpatrick 14b4213c17 tstest/natlab: add missing tests from earlier commits 
Now you can actually see that packet delivery works.

Pairing with @danderson
 2020-07-02 14:19:43 -07:00
Brad Fitzpatrick 3f4f1cfe66 tstest/natlab: basic NAT-free packet delivery works 
Pairing with @danderson
 2020-07-02 14:18:36 -07:00
Brad Fitzpatrick a477e70632 tstest/natlab: network address allocation 
Pairing with @danderson
 2020-07-02 13:39:41 -07:00
Brad Fitzpatrick bb1a9e4700 tstest/natlab: bit more of in-memory network testing package 
Pairing with @danderson
 2020-07-02 13:02:13 -07:00
Brad Fitzpatrick 23c93da942 tstest/natlab: start of in-memory network testing package 
Pairing with @danderson
 2020-07-02 12:36:12 -07:00
Brad Fitzpatrick c52905abaa wgengine/magicsock: log less on no-op disco route switches 
Also, renew trustBestAddrUntil even if latency isn't better.
 2020-07-02 11:39:05 -07:00
Brad Fitzpatrick 847b6f039b disco: simplify expression, appease staticcheck 
Was:
disco/disco.go:164:10: unnecessary use of fmt.Sprintf (S1039)
 2020-07-02 10:52:23 -07:00
Brad Fitzpatrick 57e8931160 control/controlclient: fix copy/paste-o in debug knob accessor 
Introduced in a975e86bb8.

Only affected TS_DEBUG_* env users.
 2020-07-02 10:51:23 -07:00
Brad Fitzpatrick 0f0ed3dca0 wgengine/magicsock: clean up discovery logging 
Updates #483
 2020-07-02 10:48:13 -07:00
Brad Fitzpatrick 056fbee4ef wgengine/magicsock: add TS_DEBUG_OMIT_LOCAL_ADDRS knob to force STUN use only 
For debugging.
 2020-07-02 09:53:10 -07:00
Brad Fitzpatrick 6233fd7ac3 control/controlclient: don't truncate AuthURL in log 
It's useful to copy/paste directly from there, without using tailscale up.
If it's truncated for some specific reason, it doesn't say why.
 2020-07-02 09:45:08 -07:00