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bf3bb88851
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38 Commits

Author SHA1 Message Date
Jason A. Donenfeld
bf3bb88851 device: remove version string 
This is what modules are for, and Go binaries can introspect.

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
 2021-01-28 17:23:39 +01:00
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
Jason A. Donenfeld
da9d300cf8 main: now that we're upstreamed, relax Linux warning 
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
 2020-05-02 02:20:47 -06:00
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
84b5a4d83d main: simplify warnings 2019-09-08 10:56:00 -05:00
Matt Layher
1f48971a80 tun: remove TUN prefix from types to reduce stutter elsewhere 
Signed-off-by: Matt Layher <mdlayher@gmail.com>
 2019-06-14 18:35:57 +02:00
Jason A. Donenfeld
3bf41b06ae global: regroup all imports 2019-05-14 09:09:52 +02:00
Jason A. Donenfeld
d9078fe772 main: revise warnings 2019-04-19 07:48:09 +09:00
Jason A. Donenfeld
69f0fe67b6 global: begin modularization 2019-03-03 05:00:40 +01:00
Jason A. Donenfeld
366cbd11a4 tun: use netpoll instead of rwcancel 
The new sysconn function of Go 1.12 makes this possible:

package main

import "log"
import "os"
import "unsafe"
import "time"
import "syscall"
import "sync"
import "golang.org/x/sys/unix"

func main() {
	fd, err := os.OpenFile("/dev/net/tun", os.O_RDWR, 0)
	if err != nil {
		log.Fatal(err)
	}

	var ifr [unix.IFNAMSIZ + 64]byte
	copy(ifr[:], []byte("cheese"))
	*(*uint16)(unsafe.Pointer(&ifr[unix.IFNAMSIZ])) = unix.IFF_TUN

	var errno syscall.Errno
	s, _ := fd.SyscallConn()
	s.Control(func(fd uintptr) {
		_, _, errno = unix.Syscall(
			unix.SYS_IOCTL,
			fd,
			uintptr(unix.TUNSETIFF),
			uintptr(unsafe.Pointer(&ifr[0])),
		)
	})
	if errno != 0 {
		log.Fatal(errno)
	}

	b := [4]byte{}
	wait := sync.WaitGroup{}
	wait.Add(1)
	go func() {
		_, err := fd.Read(b[:])
		log.Print("Read errored: ", err)
		wait.Done()
	}()
	time.Sleep(time.Second)
	log.Print("Closing")
	err = fd.Close()
	if err != nil {
		log.Print("Close errored: " , err)
	}
	wait.Wait()
	log.Print("Exiting")
}
 2019-02-27 01:52:55 +01:00
Jason A. Donenfeld
42c6d0e261 Change package path 2019-02-18 05:11:39 +01:00
Jason A. Donenfeld
6f76edd045 Import windows scafolding 2019-02-05 12:59:42 +01:00
Jason A. Donenfeld
dff424baf8 Update copyright 2019-02-05 12:59:42 +01:00
Jason A. Donenfeld
5be541d147 global: fix up copyright headers 2018-09-16 18:49:19 +02:00
Jason A. Donenfeld
955e89839f Print version number in log 2018-05-30 01:09:18 +02:00
Jason A. Donenfeld
2f2eca8947 Catch EINTR 2018-05-24 15:36:29 +02:00
Jason A. Donenfeld
4a9de3218e Add undocumented --version flag 2018-05-24 02:25:36 +02:00
Jason A. Donenfeld
588b9f01ae Adopt GOPATH 
GOPATH is annoying, but the Go community pushing me to adopt it is even
more annoying.
 2018-05-23 05:18:13 +02:00
Jason A. Donenfeld
0a63188afa Move tun to subpackage 2018-05-23 03:58:27 +02:00
Filippo Valsorda
bc05eb1c3c Minor main.go signal fixes 
* Buffer the signal channel as it's non-blocking on the sender side
* Notify on SIGTERM instead of the uncatchable SIGKILL

License: MIT
Signed-off-by: Filippo Valsorda <valsorda@google.com>
 2018-05-21 20:22:12 +02:00
Mathias Hall-Andersen
38accea986 Add copyright headers 2018-05-19 02:40:22 +02:00
Jason A. Donenfeld
115a2e3946 Use /dev/null as place holder 2018-05-14 20:06:33 +02:00
Jason A. Donenfeld
a62c770a99 Ugly hack to suppress warning on backgrounded process 2018-05-14 16:01:58 +02:00
Jason A. Donenfeld
795f76cffa Netlink sockets can't be shutdown 2018-05-14 14:08:03 +02:00
Jason A. Donenfeld
355e9bd619 Clean more 2018-05-14 12:27:29 +02:00
Jason A. Donenfeld
c1e097d6d0 Optional logging even in background 2018-05-14 03:38:06 +02:00
Jason A. Donenfeld
233f079a94 Rewrite timers and related state machines 2018-05-10 16:08:03 +02:00
Mathias Hall-Andersen
abe2651ad5 Removed remaining signals from peer 
1. Removed remaining signals from peer struct
2. Made needAnotherKeepalive local
3. Removed environment check from warning text (annoying when debugging)
 2018-05-05 22:07:58 +02:00
Mathias Hall-Andersen
7a83f2565a Removed old signals 2018-05-05 04:15:07 +02:00
Jason A. Donenfeld
e1de0f229a uapi: use kqueue for sock deletion on darwin 2018-05-04 21:51:55 +02:00
Jason A. Donenfeld
de7ecc571b tun: allow darwin to auto assign names 2018-05-04 21:11:51 +02:00
Jason A. Donenfeld
0f322f83f5 warning: put into main 2018-05-04 19:50:08 +02:00
Jason A. Donenfeld
a040786645 global: Add SPDX tags and copyright header 
Mathias should probably add his copyright headers to each file too.
 2018-05-03 15:06:25 +02:00
Jason A. Donenfeld
209dd22ea0 Daemonize with environment variable 2018-05-03 14:55:10 +02:00
Jason A. Donenfeld
258a9223b9 Start to dust off Darwin 2018-05-03 14:55:10 +02:00
Jason A. Donenfeld
676bb91434 We can determine the interface name ourselves 2018-04-19 16:00:20 +02:00
Mathias Hall-Andersen
a0f54cbe5a Align with go library layout 2018-02-04 16:08:26 +01:00