Commit Graph

4964 Commits

Author SHA1 Message Date
Brad Fitzpatrick
8b0112649a wgengine/netstack: don't build netstack on 32-bit platforms
See google/gvisor#5241
2021-01-11 09:56:05 -08:00
Brad Fitzpatrick
5aa5db89d6 cmd/tailscaled, wgengine/netstack: add start of gvisor userspace netstack work
Not usefully functional yet (mostly a proof of concept), but getting
it submitted for some work @namansood is going to do atop this.

Updates #707
Updates #634
Updates #48
Updates #835
2021-01-11 09:31:14 -08:00
Brad Fitzpatrick
5efb0a8bca cmd/tailscale: change formatting of "tailscale status"
* show DNS name over hostname, removing domain's common MagicDNS suffix.
  only show hostname if there's no DNS name.
  but still show shared devices' MagicDNS FQDN.

* remove nerdy low-level details by default: endpoints, DERP relay,
  public key.  They're available in JSON mode still for those who need
  them.

* only show endpoint or DERP relay when it's active with the goal of
  making debugging easier. (so it's easier for users to understand
  what's happening) The asterisks are gone.

* remove Tx/Rx numbers by default for idle peers; only show them when
  there's traffic.

* include peers' owner login names

* add CLI option to not show peers (matching --self=true, --peers= also
  defaults to true)

* sort by DNS/host name, not public key

* reorder columns
2021-01-10 12:11:22 -08:00
Brad Fitzpatrick
c09d5a9e28 go.mod: bump wireguard-go to match our meta repo 2021-01-08 21:15:32 -08:00
Brad Fitzpatrick
b5b9866ba2 wgengine/magicsock: copy self DNS name to PeerStatus, re-fill OS
The OS used to be sent back from the server but that has since
been removed as being redundant.
2021-01-08 20:55:57 -08:00
Brad Fitzpatrick
a4cc31e7d8 go.sum: update 2021-01-08 20:55:03 -08:00
Josh Bleecher Snyder
1271e135cd wgengine/tstun: initialize wireguard-go TUN parameters
This will enable us to remove the corresponding code from
our fork of wireguard-go.

Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
2021-01-08 17:22:04 -08:00
Josh Bleecher Snyder
18471a8792 ipn: close logger at the end of TestLocalLogLines
If any goroutine continues to use the logger in TestLocalLogLines
after the test finishes, the test panics.

The culprit for this was wireguard-go; the previous commit fixed that.
This commit adds suspenders: When the test is done, make logging calls
into no-ops.

Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
2021-01-08 17:10:48 -08:00
Josh Bleecher Snyder
1e4604f60e wgengine: quiet some wireguard-go logging
The log lines that wireguard-go prints as it starts
and stops its worker routines are mostly noise.
They also happen after other work is completed,
which causes failures in some of the log testing packages.

Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
2021-01-08 17:10:48 -08:00
Josh Bleecher Snyder
c580d2eab1 go.mod: change wireguard-go version spelling
Our toolchains disagree about the spelling.
Sigh.

Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
2021-01-08 15:58:11 -08:00
Josh Bleecher Snyder
53f9dcdf05 go.mod: update wireguard-go to fix windows build failure
Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
2021-01-08 15:56:45 -08:00
Josh Bleecher Snyder
80c33f4fa1 go.mod: update to latest wireguard-go 2021-01-08 15:44:07 -08:00
Josh Bleecher Snyder
e0c4ffa71f wgengine/tsdns: respond with any available addrs for ALL queries
This appears to have been the intent of the previous code,
but in practice, it only returned A records.

Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
2021-01-08 14:23:11 -08:00
Denton Gentry
fa3e8e1a28 Add names to test cases in ipn/local_test.go.
There are so many now that just a number doesn't work well.

Signed-off-by: Denton Gentry <dgentry@tailscale.com>
2021-01-08 10:23:32 -08:00
Denton Gentry
67ebc7c0e7 Allow 2021 in LICENSE header.
Signed-off-by: Denton Gentry <dgentry@tailscale.com>
2021-01-08 10:23:32 -08:00
Denton Gentry
02c34881b5 Add more tests for Direct.
Signed-off-by: Denton Gentry <dgentry@tailscale.com>
2021-01-08 10:23:32 -08:00
Denton Gentry
df64b7abf8 Add IPv6 Reverse DNS Lookup test.
To be honest I'm not fond of Golden Bytes tests like this, but
not so much as to want to rewrite the whole test. The DNS byte
format is essentially immutable at this point, the encoded bytes
aren't going to change. The rest of the test assumptions about
hostnames might, but we can fix that when it comes.

Signed-off-by: Denton Gentry <dgentry@tailscale.com>
2021-01-08 10:23:32 -08:00
Denton Gentry
414cb4a695 Add test for dnsMapsEqual.
Exercises most cases in the function.

Signed-off-by: Denton Gentry <dgentry@tailscale.com>
2021-01-08 10:23:32 -08:00
Denton Gentry
b716c76df9 cover one more case in TestStatusEqual.
Signed-off-by: Denton Gentry <dgentry@tailscale.com>
2021-01-08 10:23:32 -08:00
Brad Fitzpatrick
2f04f49376 control/controlclient: use lite map request handler to avoid aborting streams
Previously, any change to endpoints or hostinfo (or hostinfo's
netinfo) would result in the long-running map request HTTP stream
being torn down and restarted, losing all compression context along
with it.

This change makes us instead send a lite map request (OmitPeers: true,
Stream: false) that doesn't subscribe to anything, and then the
coordination server knows to not close other streams for that node
when it recives a lite request.

Fixes tailscale/corp#797

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-01-08 09:30:08 -08:00
Denton Gentry
e692e3866b Cache go modules.
Apply Go actions cache, as described in
https://markphelps.me/2019/11/speed-up-your-go-builds-with-actions-cache/

Signed-off-by: Denton Gentry <dgentry@tailscale.com>
2021-01-07 21:34:43 -08:00
Denton Gentry
d12add6e22 Adjust coverage options.
+ we don't need an exactly accurate count of the number of times each
  time ran. Remove -covermode, the default "set" will be fine to just
  track whether a given line ran at all.
+ add -benchtime=1x. We only need to run the benchmarks once.
+ -bench=. to match any character.

Signed-off-by: Denton Gentry <dgentry@tailscale.com>
2021-01-07 21:34:43 -08:00
Denton Gentry
332759ef73 Add coveralls.io support.
We include -bench because some parts of the codebase, like
smallzstd, do not have regular unit tests but do have very
good benchmark tests that covers all functions.

Signed-off-by: Denton Gentry <dgentry@tailscale.com>
2021-01-07 21:34:43 -08:00
Alex Brainman
9985b3f1ed wgengine/monitor: close closeHandle
eccc167 introduced closeHandle which opened the handle,
but never closed it.

Windows handles should be closed.

Updates #921

Signed-off-by: Alex Brainman <alex.brainman@gmail.com>
2021-01-07 20:18:02 -08:00
Frederik “Freso” S. Olesen
83fccf9fe5 tailscaled.service: Lock down clock and /dev (#1071)
Research in issue #1063 uncovered why tailscaled would fail with
ProtectClock enabled (it implicitly enabled DevicePolicy=closed).

This knowledge in turn also opens the door for locking down /dev
further, e.g. explicitly setting DevicePolicy=strict (instead of
closed), and making /dev private for the unit.

Additional possible future (or downstream) lockdown that can be done
is setting `PrivateDevices=true` (with `BindPaths=/dev/net/`), however,
systemd 233 or later is required for this, and tailscaled currently need
to work for systemd down to version 215.

Closes https://github.com/tailscale/tailscale/issues/1063

Signed-off-by: Frederik “Freso” S. Olesen <freso.dk@gmail.com>
2021-01-07 10:18:55 -08:00
Brad Fitzpatrick
b5129dadfd ipn: fix buggy-looking format string in error log
On shutdown, logs showed:
wgengine status error: &errors.errorString{s:"engine closing; no status"}
2021-01-06 20:18:29 -08:00
Brad Fitzpatrick
66be052a70 net/dnscache: work on IPv6-only hosts (again)
This fixes the regression where we had stopped working on IPv6-only
hosts.

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-01-06 19:53:13 -08:00
Brad Fitzpatrick
560da4884f tailcfg: add Node.Sharer field
Updates #992

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-01-05 13:53:00 -08:00
Christina Wen
d8a5b3f22f API.md: revise documentation to be more consistent
Signed-off-by: Christina Wen <christina@tailscale.com>
2021-01-05 14:33:28 -05:00
Christina Wen
3e3bd5f169 API.md: release API documentation
Co-authored-by: Daniel Chung <daniel@tailscale.com>
Signed-off-by: Christina Wen <christina@tailscale.com>
2021-01-05 14:33:28 -05:00
Brad Fitzpatrick
312646c516
tailcfg: add omitempty to FilterRule.SrcBits (#1089)
It's not used by recent clients, so even more reason to omit it.

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-01-05 10:54:01 -08:00
Brad Fitzpatrick
e8ae355bb8
ipn: delete domainsForProxying, require explicit DNS search domains (mapver 9) (#1078)
Previously the client had heuristics to calculate which DNS search domains
to set, based on the peers' names. Unfortunately that prevented us from
doing some things we wanted to do server-side related to node sharing.

So, bump MapRequest.Version to 9 to signal that the client only uses the
explicitly configured DNS search domains and doesn't augment it with its own
list.

Updates tailscale/corp#1026

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-01-05 10:37:15 -08:00
Brad Fitzpatrick
1ccf997699 version: new version for a new year 2021-01-04 08:58:05 -08:00
David Anderson
8fc11d582d go.sum: update to match wireguard-go version update.
Signed-off-by: David Anderson <dave@natulte.net>
2021-01-02 16:27:06 -08:00
Josh Bleecher Snyder
14af677332 go.mod: update wireguard-go version
To pick up netaddr deps change
2020-12-30 17:41:14 -08:00
David Anderson
86fe22a1b1 Update netaddr, and adjust wgengine/magicsock due to API change.
Signed-off-by: David Anderson <danderson@tailscale.com>
2020-12-30 17:36:03 -08:00
Josh Bleecher Snyder
56a7652dc9 wgkey: new package
This is a replacement for the key-related parts
of the wireguard-go wgcfg package.

This is almost a straight copy/paste from the wgcfg package.
I have slightly changed some of the exported functions and types
to avoid stutter, added and tweaked some comments,
and removed some now-unused code.

To avoid having wireguard-go depend on this new package,
wgcfg will keep its key types.

We translate into and out of those types at the last minute.
These few remaining uses will be eliminated alongside
the rest of the wgcfg package.

Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
2020-12-30 17:33:02 -08:00
Brad Fitzpatrick
13b554fed9 version: bump for the last time in 2020 2020-12-30 12:07:25 -08:00
Brad Fitzpatrick
c2edb2865b go.sum: update 2020-12-30 12:07:25 -08:00
Christine Dodrill
70f14af21e
add nix-shell boilerplate (#1028)
This enables users of nix-shell to automagically have the correct 
development environment by simply changing directory into a
checkout of this repo. For more information on this see the following
links:

- https://christine.website/blog/how-i-start-nix-2020-03-08
- https://direnv.net/
2020-12-29 12:17:03 -05:00
Brad Fitzpatrick
0d94fe5f69
wgengine/router: disable IPv6 on Linux if ip rule -6 fails (#1074)
Updates #562
Fixes #973

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2020-12-29 08:26:17 -08:00
Josh Bleecher Snyder
1e88050403 net/tsaddr: add ChromeOS contains tests
Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
2020-12-28 16:48:43 -08:00
Josh Bleecher Snyder
cf2ac2d123 go.mod: upgrade inet.af/netaddr
To pick up IPPrefix.Contains fix.
2020-12-28 15:46:46 -08:00
Josh Bleecher Snyder
2fe770ed72 all: replace wgcfg.IP and wgcfg.CIDR with netaddr types
Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
2020-12-28 13:00:42 -08:00
Charlotte Brandhorst-Satzkorn
ff2b3d02e6
Fix typo in cmd/tailscale/cli/cli.go (#1069)
Remove duplicate 'to connect' in error message.

Fixes #1068

Signed-off-by: Charlotte Brandhorst-Satzkorn <charlotte@catzkorn.dev>
2020-12-25 07:32:37 -08:00
Frederik “Freso” S. Olesen
a9a80ab372
tailscaled.service: Harden systemd unit somewhat (#1062)
While not a full capability lockdown of the systemd unit, this still
improves sandboxing and security of the running process a good deal.

Signed-off-by: Frederik “Freso” S. Olesen <freso.dk@gmail.com>
2020-12-24 16:14:58 -08:00
Matt Layher
1a42cef3a2 cmd/tailscale*: make updatedeps
Signed-off-by: Matt Layher <mdlayher@gmail.com>
2020-12-23 08:08:02 -08:00
Matt Layher
bfbd6b9241 go.mod: bump github.com/mdlayher/netlink to v1.2.0
Signed-off-by: Matt Layher <mdlayher@gmail.com>
2020-12-23 08:08:02 -08:00
Brad Fitzpatrick
80c94168ae wgengine: finish updating isTrimmablePeer
I accidentally merged Dave's change with the XXXX DO NOT SUBMIT comment
in it.
2020-12-22 14:48:24 -08:00
David Anderson
cb96b14bf4 net/packet: remove the custom IP4/IP6 types in favor of netaddr.IP.
Upstream netaddr has a change that makes it alloc-free, so it's safe to
use in hot codepaths. This gets rid of one of the many IP types in our
codebase.

Performance is currently worse across the board. This is likely due in
part to netaddr.IP being a larger value type (4b -> 24b for IPv4,
16b -> 24b for IPv6), and in other part due to missing low-hanging fruit
optimizations in netaddr. However, the regression is less bad than
it looks at first glance, because we'd micro-optimized packet.IP* in
the past few weeks. This change drops us back to roughly where we
were at the 1.2 release, but with the benefit of a significant
code and architectural simplification.

name                   old time/op    new time/op    delta
pkg:tailscale.com/net/packet goos:linux goarch:amd64
Decode/tcp4-8            12.2ns ± 5%    29.7ns ± 2%  +142.32%  (p=0.008 n=5+5)
Decode/tcp6-8            12.6ns ± 3%    65.1ns ± 2%  +418.47%  (p=0.008 n=5+5)
Decode/udp4-8            11.8ns ± 3%    30.5ns ± 2%  +157.94%  (p=0.008 n=5+5)
Decode/udp6-8            27.1ns ± 1%    65.7ns ± 2%  +142.36%  (p=0.016 n=4+5)
Decode/icmp4-8           24.6ns ± 2%    30.5ns ± 2%   +23.65%  (p=0.016 n=4+5)
Decode/icmp6-8           22.9ns ±51%    65.5ns ± 2%  +186.19%  (p=0.008 n=5+5)
Decode/igmp-8            18.1ns ±44%    30.2ns ± 1%   +66.89%  (p=0.008 n=5+5)
Decode/unknown-8         20.8ns ± 1%    10.6ns ± 9%   -49.11%  (p=0.016 n=4+5)
pkg:tailscale.com/wgengine/filter goos:linux goarch:amd64
Filter/icmp4-8           30.5ns ± 1%    77.9ns ± 3%  +155.01%  (p=0.008 n=5+5)
Filter/tcp4_syn_in-8     43.7ns ± 3%   123.0ns ± 3%  +181.72%  (p=0.008 n=5+5)
Filter/tcp4_syn_out-8    24.5ns ± 2%    45.7ns ± 6%   +86.22%  (p=0.008 n=5+5)
Filter/udp4_in-8         64.8ns ± 1%   210.0ns ± 2%  +223.87%  (p=0.008 n=5+5)
Filter/udp4_out-8         119ns ± 0%     278ns ± 0%  +133.78%  (p=0.016 n=4+5)
Filter/icmp6-8           40.3ns ± 2%   204.4ns ± 4%  +407.70%  (p=0.008 n=5+5)
Filter/tcp6_syn_in-8     35.3ns ± 3%   199.2ns ± 2%  +464.95%  (p=0.008 n=5+5)
Filter/tcp6_syn_out-8    32.8ns ± 2%    81.0ns ± 2%  +147.10%  (p=0.008 n=5+5)
Filter/udp6_in-8          106ns ± 2%     290ns ± 2%  +174.48%  (p=0.008 n=5+5)
Filter/udp6_out-8         184ns ± 2%     314ns ± 3%   +70.43%  (p=0.016 n=4+5)
pkg:tailscale.com/wgengine/tstun goos:linux goarch:amd64
Write-8                  9.02ns ± 3%    8.92ns ± 1%      ~     (p=0.421 n=5+5)

name                   old alloc/op   new alloc/op   delta
pkg:tailscale.com/net/packet goos:linux goarch:amd64
Decode/tcp4-8             0.00B          0.00B           ~     (all equal)
Decode/tcp6-8             0.00B          0.00B           ~     (all equal)
Decode/udp4-8             0.00B          0.00B           ~     (all equal)
Decode/udp6-8             0.00B          0.00B           ~     (all equal)
Decode/icmp4-8            0.00B          0.00B           ~     (all equal)
Decode/icmp6-8            0.00B          0.00B           ~     (all equal)
Decode/igmp-8             0.00B          0.00B           ~     (all equal)
Decode/unknown-8          0.00B          0.00B           ~     (all equal)
pkg:tailscale.com/wgengine/filter goos:linux goarch:amd64
Filter/icmp4-8            0.00B          0.00B           ~     (all equal)
Filter/tcp4_syn_in-8      0.00B          0.00B           ~     (all equal)
Filter/tcp4_syn_out-8     0.00B          0.00B           ~     (all equal)
Filter/udp4_in-8          0.00B          0.00B           ~     (all equal)
Filter/udp4_out-8         16.0B ± 0%     64.0B ± 0%  +300.00%  (p=0.008 n=5+5)
Filter/icmp6-8            0.00B          0.00B           ~     (all equal)
Filter/tcp6_syn_in-8      0.00B          0.00B           ~     (all equal)
Filter/tcp6_syn_out-8     0.00B          0.00B           ~     (all equal)
Filter/udp6_in-8          0.00B          0.00B           ~     (all equal)
Filter/udp6_out-8         48.0B ± 0%     64.0B ± 0%   +33.33%  (p=0.008 n=5+5)

name                   old allocs/op  new allocs/op  delta
pkg:tailscale.com/net/packet goos:linux goarch:amd64
Decode/tcp4-8              0.00           0.00           ~     (all equal)
Decode/tcp6-8              0.00           0.00           ~     (all equal)
Decode/udp4-8              0.00           0.00           ~     (all equal)
Decode/udp6-8              0.00           0.00           ~     (all equal)
Decode/icmp4-8             0.00           0.00           ~     (all equal)
Decode/icmp6-8             0.00           0.00           ~     (all equal)
Decode/igmp-8              0.00           0.00           ~     (all equal)
Decode/unknown-8           0.00           0.00           ~     (all equal)
pkg:tailscale.com/wgengine/filter goos:linux goarch:amd64
Filter/icmp4-8             0.00           0.00           ~     (all equal)
Filter/tcp4_syn_in-8       0.00           0.00           ~     (all equal)
Filter/tcp4_syn_out-8      0.00           0.00           ~     (all equal)
Filter/udp4_in-8           0.00           0.00           ~     (all equal)
Filter/udp4_out-8          1.00 ± 0%      1.00 ± 0%      ~     (all equal)
Filter/icmp6-8             0.00           0.00           ~     (all equal)
Filter/tcp6_syn_in-8       0.00           0.00           ~     (all equal)
Filter/tcp6_syn_out-8      0.00           0.00           ~     (all equal)
Filter/udp6_in-8           0.00           0.00           ~     (all equal)
Filter/udp6_out-8          1.00 ± 0%      1.00 ± 0%      ~     (all equal)

Signed-off-by: David Anderson <danderson@tailscale.com>
2020-12-22 14:44:36 -08:00