Commit graph

14 commits

Author SHA1 Message Date
Jason A. Donenfeld d669c78c43 device: combine debug and info log levels into 'verbose'
There are very few cases, if any, in which a user only wants one of
these levels, so combine it into a single level.

While we're at it, reduce indirection on the loggers by using an empty
function rather than a nil function pointer. It's not like we have
retpolines anyway, and we were always calling through a function with a
branch prior, so this seems like a net gain.

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2021-01-26 23:05:48 +01:00
Josh Bleecher Snyder 7139279cd0 device: change logging interface to use functions
This commit overhauls wireguard-go's logging.

The primary, motivating change is to use a function instead
of a *log.Logger as the basic unit of logging.
Using functions provides a lot more flexibility for
people to bring their own logging system.

It also introduces logging helper methods on Device.
These reduce line noise at the call site.
They also allow for log functions to be nil;
when nil, instead of generating a log line and throwing it away,
we don't bother generating it at all.
This spares allocation and pointless work.

This is a breaking change, although the fix required
of clients is fairly straightforward.

Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
2021-01-26 22:40:20 +01:00
Josh Bleecher Snyder 70861686d3 device: fix races from changing private_key
Access keypair.sendNonce atomically.
Eliminate one unnecessary initialization to zero.

Mutate handshake.lastSentHandshake with the mutex held.

Co-authored-by: David Anderson <danderson@tailscale.com>
Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
2021-01-07 14:49:44 +01:00
Riobard Zhan 2c143dce0f replay: minor API changes to more idiomatic Go
Signed-off-by: Riobard Zhan <me@riobard.com>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2020-10-14 10:46:00 +02:00
Jason A. Donenfeld db0aa39b76 global: update header comments and modules
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2020-05-02 02:08:26 -06:00
Jason A. Donenfeld 28c4d04304 device: use atomic access for unlocked keypair.next
Go's GC semantics might not always guarantee the safety of this, and the
race detector gets upset too, so instead we wrap this all in atomic
accessors.

Reported-by: David Anderson <danderson@tailscale.com>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2020-05-02 01:56:48 -06:00
Avery Pennarun d60857e1a7 device: add debug logs describing handshake rejection
Useful in testing when bad network stacks repeat or
batch large numbers of packets.

Signed-off-by: Avery Pennarun <apenwarr@tailscale.com>
2020-05-02 01:50:47 -06:00
David Crawshaw de374bfb44 device: give handshake state a type
And unexport handshake constants.

Signed-off-by: David Crawshaw <crawshaw@tailscale.com>
2020-05-02 01:46:42 -06:00
Jason A. Donenfeld 4739708ca4 noise: unify zero checking of ecdh 2020-03-17 23:07:14 -06:00
Jonathan Tooker f7d0edd2ec global: fix a few typos courtesy of codespell
Signed-off-by: Jonathan Tooker <jonathan.tooker@netprotect.com>
2019-10-22 11:51:25 +02:00
Jason A. Donenfeld ae492d1b35 device: recheck counters while holding write lock 2019-10-17 15:43:06 +02:00
Matt Layher 18b6627f33 device, ratelimiter: replace uses of time.Now().Sub() with time.Since()
Simplification found by staticcheck:

$ staticcheck ./... | grep S1012
device/cookie.go:90:5: should use time.Since instead of time.Now().Sub (S1012)
device/cookie.go:127:5: should use time.Since instead of time.Now().Sub (S1012)
device/cookie.go:242:5: should use time.Since instead of time.Now().Sub (S1012)
device/noise-protocol.go:304:13: should use time.Since instead of time.Now().Sub (S1012)
device/receive.go:82:46: should use time.Since instead of time.Now().Sub (S1012)
device/send.go:132:5: should use time.Since instead of time.Now().Sub (S1012)
device/send.go:139:5: should use time.Since instead of time.Now().Sub (S1012)
device/send.go:235:59: should use time.Since instead of time.Now().Sub (S1012)
device/send.go:393:9: should use time.Since instead of time.Now().Sub (S1012)
ratelimiter/ratelimiter.go:79:10: should use time.Since instead of time.Now().Sub (S1012)
ratelimiter/ratelimiter.go:87:10: should use time.Since instead of time.Now().Sub (S1012)

Change applied using:

$ find . -type f -name "*.go" -exec sed -i "s/Now().Sub(/Since(/g" {} \;

Signed-off-by: Matt Layher <mdlayher@gmail.com>
2019-06-03 22:15:41 +02:00
Jason A. Donenfeld 3bf41b06ae global: regroup all imports 2019-05-14 09:09:52 +02:00
Jason A. Donenfeld 69f0fe67b6 global: begin modularization 2019-03-03 05:00:40 +01:00
Renamed from noise-protocol.go (Browse further)