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Author SHA1 Message Date
Josh Bleecher Snyder
6db9c4a173 wgenginer/router/dns: use constant from golang.org/x/sys/windows 
Made available in https://golang.org/cl/277153
 2020-12-10 17:23:01 -08:00
Aleksandar Pesic
0dc295a640 Isolate WireGuard code into a separate file with appropriate copyright info in header. 
Signed-off-by: Aleksandar Pesic <peske.nis@gmail.com>
 2020-12-11 01:08:41 +01:00
Aleksandar Pesic
d854fe95d2 Trivial change in function description. 
Signed-off-by: Aleksandar Pesic <peske.nis@gmail.com>
 2020-12-11 00:55:37 +01:00
Aleksandar Pesic
4749a96a5b Update depaware.txt files. 
Signed-off-by: Aleksandar Pesic <peske.nis@gmail.com>
 2020-12-11 00:45:31 +01:00
Aleksandar Pesic
338fd44657 Replace registry-access code, update wireguard-go and x/sys/windows. 
Signed-off-by: Aleksandar Pesic <peske.nis@gmail.com>
 2020-12-11 00:37:24 +01:00
Aleksandar Pesic
274d32d0aa Prepare for the new wireguard-go API. 
Signed-off-by: Aleksandar Pesic <peske.nis@gmail.com>
 2020-12-11 00:08:28 +01:00
Adrian Dewhurst
943860fde7 version: relax git detection logic (again) 
This is a repeat of commit 3aa68cd397
which was lost in a rework of version.sh.

git worktrees have a .git file rather than a .git directory, so building
in a worktree caused version.sh to generate an error.

Signed-off-by: Adrian Dewhurst <adrian@tailscale.com>
 2020-12-09 21:55:41 -05:00
Brad Fitzpatrick
bce865b61b logpolicy: migrate from x/crypto/ssh/terminal to x/term 2020-12-09 15:28:31 -08:00
David Anderson
57cd7738c2 tsweb: add an endpoint to manually trigger a GC. 
Signed-off-by: David Anderson <danderson@tailscale.com>
 2020-12-08 16:49:42 -08:00
Brad Fitzpatrick
9cb6ee3777 go.mod, go.sum: update 2020-12-08 15:23:56 -08:00
Brad Fitzpatrick
08f94b3b50 net/netcheck: fix offset of unspecified address in PCP request packet 
Fixes #810
 2020-12-08 15:22:26 -08:00
Brad Fitzpatrick
442d1873ec go.mod: bump tailscale/wireguard-go 2020-12-07 14:02:05 -08:00
Brad Fitzpatrick
19c2c6403d Update go.sum 2020-12-07 14:00:53 -08:00
Brad Fitzpatrick
b3c7b631c2 tailcfg, control/controlclient: make nil PacketFilter mean unchanged (mapver 6) 
After mapver 5's incremental netmap updates & user profiles, much of
the remaining bandwidth for streamed MapResponses were redundant,
unchanged PacketFilters. So make MapRequest.Version 6 mean that nil
means unchanged from the previous value.
 2020-12-07 09:17:42 -08:00
Brad Fitzpatrick
05e5233e07 net/netcheck: don't send flood of PCP unmap requests to router 
Updates #810
 2020-12-06 19:46:11 -08:00
Brad Fitzpatrick
9503be083d tailcfg: update comments a bit 2020-12-03 12:16:10 -08:00
Brad Fitzpatrick
88179121e3 version: bump date 2020-12-03 12:08:07 -08:00
Brad Fitzpatrick
7b92f8e718 wgengine/magicsock: add start of magicsock benchmarks (Conn.ReceiveIPv4 for now) 
And only single-threaded for now. Will get fancier later.

Updates #414
 2020-12-02 20:26:54 -08:00
Brad Fitzpatrick
713cbe84c1 wgengine/magicsock: use net.JoinHostPort when host might have colons (udp6) 
Only affected tests. (where it just generated log spam)
 2020-12-02 20:19:28 -08:00
David Anderson
be6fe393c5 wgengine: don't try pinging IPv6 addresses in legacy pinger. 
Signed-off-by: David Anderson <danderson@tailscale.com>
 2020-12-01 20:09:32 -08:00
David Anderson
dfbde3d3aa ipn: pass through the prefix length from control. 
Control sets this to /32 for IPv4 and /128 for IPv6.

Signed-off-by: David Anderson <danderson@tailscale.com>
 2020-12-01 20:09:16 -08:00
David Anderson
4c8ccd6dd6 tailcfg: document new debug flag. 2020-12-01 18:17:09 -08:00
Brad Fitzpatrick
c0af7deb86 tailcfg, cmd/tailscale: add Hostinfo.ShareeNode, hide in "tailscale status" 2020-12-01 15:29:18 -08:00
Brad Fitzpatrick
ab482118ad tailcfg: add some missing json omitempty 
Noticed these in MapResponses to clients.

MachineAuthorized was set true, but once we fix the coordination server
to zero out that field, then it can be omittted.
 2020-11-25 10:27:01 -08:00
Dmytro Tananayskiy
c431382720 Fix receiver in order to be consistent: syncs.WaitGroupChan 
Signed-off-by: Dmytro Tananayskiy <dmitriyminer@gmail.com>
 2020-11-24 17:20:34 -08:00
Josh Bleecher Snyder
3a7402aa2d logtail: help the server be more efficient 
Add content length hints to headers.
The server can use these hints to more efficiently select buffers.

Stop attempting to compress tiny requests.
The bandwidth savings are negligible (and sometimes negative!),
and it makes extra work for the server.

Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
 2020-11-24 12:00:32 -08:00
Brad Fitzpatrick
cd6099113f ipn: add a comment about skipping files with null bytes 
Updates #954
 2020-11-24 11:07:49 -08:00
Alex Brainman
72e082aaf5 ipn: make LoadPrefs return os.ErrNotExist when reading corrupted files 
It appears some users have corrupted pref.conf files. Have LoadPrefs
treat these files as non-existent. This way tailscale will make user
login, and not crash.

Fixes #954

Signed-off-by: Alex Brainman <alex.brainman@gmail.com>
 2020-11-24 11:05:42 -08:00
David Crawshaw
2c48b4ee14 tailcfg: remove outdated comments about Clone methods 
The cloner tool adds static checks that the Clone methods are up to
date, so failing to update Clone causes a compiler error.

Signed-off-by: David Crawshaw <crawshaw@tailscale.com>
 2020-11-24 13:16:21 -05:00
Sonia Appasamy
0710fca0cd
tailcfg: include ShieldsUp in HostInfo 2020-11-24 10:51:13 -05:00
Josh Bleecher Snyder
aa9d7f4665 tstime: add Parse3339B, for byte slices 
Use go4.org/mem for memory safety.
A slight performance hit, but a huge performance win
for clients who start with a []byte.
The perf hit is due largely to the MapHash call, which adds ~25ns.
That is necessary to keep the fast path allocation-free.

name                     old time/op    new time/op    delta
GoParse3339/Z-8             281ns ± 1%     283ns ± 2%     ~     (p=0.366 n=9+9)
GoParse3339/TZ-8            509ns ± 0%     510ns ± 1%     ~     (p=0.059 n=9+9)
GoParse3339InLocation-8     330ns ± 1%     330ns ± 0%     ~     (p=0.802 n=10+6)
Parse3339/Z-8              69.3ns ± 1%    74.4ns ± 1%   +7.45%  (p=0.000 n=9+10)
Parse3339/TZ-8              110ns ± 1%     140ns ± 3%  +27.42%  (p=0.000 n=9+10)
ParseInt-8                 8.20ns ± 1%    8.17ns ± 1%     ~     (p=0.452 n=9+9)

name                     old alloc/op   new alloc/op   delta
GoParse3339/Z-8             0.00B          0.00B          ~     (all equal)
GoParse3339/TZ-8             160B ± 0%      160B ± 0%     ~     (all equal)
GoParse3339InLocation-8     0.00B          0.00B          ~     (all equal)
Parse3339/Z-8               0.00B          0.00B          ~     (all equal)
Parse3339/TZ-8              0.00B          0.00B          ~     (all equal)

name                     old allocs/op  new allocs/op  delta
GoParse3339/Z-8              0.00           0.00          ~     (all equal)
GoParse3339/TZ-8             3.00 ± 0%      3.00 ± 0%     ~     (all equal)
GoParse3339InLocation-8      0.00           0.00          ~     (all equal)
Parse3339/Z-8                0.00           0.00          ~     (all equal)
Parse3339/TZ-8               0.00           0.00          ~     (all equal)


Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
 2020-11-19 14:47:11 -08:00
Josh Bleecher Snyder
a5dd0bcb09 util/jsonutil: new package 
The cornerstone API is a more memory-efficient Unmarshal.
The savings come from re-using a json.Decoder.

BenchmarkUnmarshal-8      	 4016418	       288 ns/op	       8 B/op	       1 allocs/op
BenchmarkStdUnmarshal-8   	 4189261	       283 ns/op	     184 B/op	       2 allocs/op

It also includes a Bytes type to reduce allocations
when unmarshalling a non-hex-encoded JSON string into a []byte.

Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
 2020-11-19 13:58:35 -08:00
Josh Bleecher Snyder
b65eee0745 util/lineread: add docs to Reader 
In particular, point out how to stop reading
and detect it on the other side.

Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
 2020-11-19 12:14:58 -08:00
Josh Bleecher Snyder
1ebbaaaebb net/interfaces: make syscall and netstat agree when multiple gateways are present 
likelyHomeRouterIPDarwinSyscall iterates through the list of routes,
looking for a private gateway, returning the first one it finds.

likelyHomeRouterIPDarwinExec does the same thing,
except that it returns the last one it finds.

As a result, when there are multiple gateways,
TestLikelyHomeRouterIPSyscallExec fails.
(At least, I think that that is what is happening;
I am going inferring from observed behavior.)

Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
 2020-11-19 12:14:58 -08:00
Brad Fitzpatrick
eccc167733 wgengine/monitor: fix memory corruption in Windows implementation 
I used the Windows APIs wrong previously, but it had worked just
enough.

Updates #921

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
 2020-11-18 14:51:27 -08:00
Brad Fitzpatrick
8f76548fd9 tempfork/osexec: remove old fork of os/exec 
This package was a temporary fork of os/exec to fix an EINTR loop
bug that was fixed upstream for Go 1.15 in
8c1db77a92
(https://go-review.googlesource.com/c/go/+/232862), in
src/os/exec_unix.go:

8c1db77a92 (diff-72072cbd53a7240debad8aa506ff7ec795f9cfac7322e779f9bac29a4d0d0bd4)
 2020-11-18 08:42:43 -08:00
Brad Fitzpatrick
5b338bf011 tempfork/registry: delete 
It's unused.
 2020-11-18 08:29:38 -08:00
Brad Fitzpatrick
acade77c86 ipn/ipnserver: add knob to disable babysitter 2020-11-17 15:26:39 -08:00
Brad Fitzpatrick
5d96ecd5e6 net/netstat: remove a bit more unsafe 
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
 2020-11-17 13:49:24 -08:00
Brad Fitzpatrick
c8939ab7c7 util/endian: add Native variable to get the platform's native binary.ByteOrder 
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
 2020-11-17 13:49:24 -08:00
Josh Bleecher Snyder
883a11f2a8 logtail: fix typo in comment 
Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
 2020-11-17 13:43:54 -08:00
Brad Fitzpatrick
d9e2edb5ae wgengine: reconfigure wireguard peer in two steps when its disco key changes 
First remove the device (to clear its wireguard session key), and then
add it back.

Fixes #929

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
 2020-11-16 15:26:42 -08:00
David Anderson
3c508a58cc wgengine/filter: don't filter GCP DNS. 
Signed-off-by: David Anderson <danderson@tailscale.com>
 2020-11-16 14:08:27 -08:00
Brad Fitzpatrick
51c8fd1dfc logpolicy: add -race suffix to Go version when race detector in use 2020-11-16 10:13:06 -08:00
Brad Fitzpatrick
ff50ddf1ee util/racebuild: add package to export a race-is-enabled const 2020-11-16 10:11:53 -08:00
Brad Fitzpatrick
fc8bc76e58 wgengine/router: lock goroutine to OS thread before using OLE [windows] 
See https://github.com/tailscale/tailscale/issues/921#issuecomment-727526807

Not yet sure whether this is our problem, but it can't hurt at least,
and seems like what we're supposed to do.

Updates #921
 2020-11-16 09:55:44 -08:00
Brad Fitzpatrick
7a01cd27ca net/netstat: remove some unsafe 
Just removing any unnecessary unsafe while auditing unsafe usage for #921.
 2020-11-14 21:24:09 -08:00
Brad Fitzpatrick
45d96788b5 net/netns: remove use of unsafe on Windows 
Found while auditing unsafe for #921 via the list at:

https://github.com/tailscale/tailscale/issues/921#issuecomment-727365383

No need for unsafe here, so remove it.
 2020-11-14 19:53:10 -08:00
Brad Fitzpatrick
000347d4cf util/endian: add package with const for whether platform is big endian 2020-11-14 19:53:10 -08:00
Josh Bleecher Snyder
b0526e8284 net/packet: remove unnecessary mark 
There's no need to mask out the bottom four bits
of b[0] if we are about to shift them away.
 2020-11-13 18:31:38 -08:00