Hesham/wireguard-go
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Author SHA1 Message Date
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
ab0f442daf tun: use sysconn instead of .Fd with Go 1.12 2019-02-27 01:34:11 +01:00
Jason A. Donenfeld
66524c1f7e Rearrange imports 2019-02-22 20:59:43 +01:00
Jason A. Donenfeld
6e4460ae65 device: send persistent keepalive when bringing up device 
Reported-by: Marcelo Bello
 2019-02-22 19:33:28 +01:00
Simon Rozman
d002eff155 wintun: Read/write packet size from/to exchange buffer directly 
Driver <-> user-space communication is local and using native endian.

Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-02-22 16:16:14 +01:00
Simon Rozman
e06a8f8f9f wintun: Make two-step slicing a one step 
Stop relying to Go compiler optimizations and calculate the end offset
directly.

Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-02-22 16:11:33 +01:00
Simon Rozman
ac4944a708 wintun: Write exchange buffer increased back to 1MiB 
Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-02-20 20:13:33 +01:00
Simon Rozman
2491f9d454 wintun: Migrate from unsafe buffer handling to encoding/binary 
Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-02-20 20:10:24 +01:00
Simon Rozman
8091c6474a wintun: Adopt new packet data alignment 
Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-02-20 19:56:10 +01:00
Simon Rozman
040da43889 wintun: Cleanup 
Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-02-20 18:38:18 +01:00
Simon Rozman
b7025b5627 wintun: Add TUN device locking 
In case reading from TUN device detected TUN device was closed, it
closed the file handle and set tunFile to nil. The tunFile is
automatically reopened on retry, but... If another packet comes in the
WireGuard calls Write() method. With tunFile set to nil, this will
cause access violation.

Therefore, locking was introduced.

Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-02-20 13:12:08 +01:00
Simon Rozman
6581cfb885 wintun: Move exchange buffer in separate struct on heap 
This allows buffer alignment and keeps it together with its meta-data.

Furthermore, the write buffer has been reduced - as long as we flush
after _every_ write, we don't need a 1MiB write buffer.

Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-02-20 11:41:37 +01:00
Simon Rozman
4863089120 wintun: Switch to dynamic packet sizes 
Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-02-19 18:50:42 +01:00
Jason A. Donenfeld
42c6d0e261 Change package path 2019-02-18 05:11:39 +01:00
Jason A. Donenfeld
f7170e5de2 Bump dependencies for ARM ChaCha20 2019-02-14 10:59:54 +01:00
Simon Rozman
b719a09a26 wintun: Auto-calculate TUN exchange buffer size 
Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-02-08 15:21:24 +01:00
Simon Rozman
f05f52637f wintun: Simplify Read method() 
Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-02-08 14:31:05 +01:00
Simon Rozman
713477cfb1 wintun: Make constants private and adopt Go recommended case 
Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-02-08 08:55:23 +01:00
Simon Rozman
5981d5cacf wintun: Check for user close in read loop regardless the load 
Do the WaitForSingleObject() always to provide high-load responsiveness.

Reorder events so TUN_SIGNAL_CLOSE has priority over
TUN_SIGNAL_DATA_AVAIL, to provide high-load responsiveness at all.

Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-02-08 08:48:35 +01:00
Simon Rozman
b13739ada2 wintun: Adjust tunRWQueue.left member to match Wintun driver 
Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-02-08 07:32:12 +01:00
Simon Rozman
c4988999ac setupapi: Merge _SP_DRVINFO_DETAIL_DATA and DrvInfoDetailData 
Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-02-07 23:50:43 +01:00
Simon Rozman
b662896cf4 setupapi: Merge SP_DRVINFO_DATA and DrvInfoData 
Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-02-07 23:50:43 +01:00
Simon Rozman
0525f6b112 setupapi: Rename SP_REMOVEDEVICE_PARAMS to RemoveDeviceParams 
Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-02-07 23:50:43 +01:00
Simon Rozman
9d830826c5 setupapi: Rename SP_CLASSINSTALL_HEADER to ClassInstallHeader 
Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-02-07 23:50:43 +01:00
Simon Rozman
bd963497da setupapi: Merge _SP_DEVINSTALL_PARAMS and DevInstallParams 
Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-02-07 23:50:30 +01:00
Simon Rozman
05d25fd1b7 setupapi: Merge _SP_DEVINFO_LIST_DETAIL_DATA and DevInfoListDetailData 
Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-02-07 23:49:50 +01:00
Simon Rozman
6d2729dccc setupapi: Rename SP_DEVINFO_DATA to DevInfoData 
Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-02-07 22:43:02 +01:00
Simon Rozman
d87cbeeb2f wintun: Detect if a foreign interface with the same name exists 
Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-02-07 22:02:51 +01:00
Simon Rozman
043b7e8013 wintun: Clean excessive setupapi.DevInfo.GetDeviceInfoListDetail() call 
Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-02-07 20:49:41 +01:00
Simon Rozman
ef48d4fa95 wintun: Explain rationale behind case-insensitive interface names 
Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-02-07 19:42:59 +01:00
Simon Rozman
f7276ed522 wintun: Implement TODO in TestSetupDiGetDeviceRegistryProperty() 
Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-02-07 18:59:34 +01:00
Jason A. Donenfeld
c4b43e35a7 wintun: add FlushInterface stub 2019-02-07 18:24:28 +01:00
Jason A. Donenfeld
2efafecab5 main_windows: Get iface name from argument 2019-02-07 15:44:07 +01:00
Jason A. Donenfeld
fac1fbcd72 wintun: Compare values of GUID, not pointers, when removing 2019-02-07 04:49:15 +01:00
Jason A. Donenfeld
52aa00f3ba main_windows: Catch more exit events 2019-02-07 04:42:35 +01:00
Jason A. Donenfeld
ea59177f1c wintun: Introduce new package for obscuring Windows bits 2019-02-07 04:39:59 +01:00
Jason A. Donenfeld
306d08e692 tun_windows: Style 2019-02-07 04:08:05 +01:00
Jason A. Donenfeld
3b7a4fa3ef setupapi: Lower case params 2019-02-07 03:46:31 +01:00
Jason A. Donenfeld
223685875f setupapi: Do not export the toGo/toWindows functions 2019-02-07 02:56:31 +01:00
Jason A. Donenfeld
652158ec3c setupapi: Pass pointers instead of values 2019-02-07 02:37:19 +01:00
Simon Rozman
cb2bc4b34c tun_windows: Introduce preliminary TUN interface creation 
Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-02-06 22:30:14 +01:00
Simon Rozman
46279ad0f9 tun_windows: Stop checking minimum size of received TUN packets 
Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-02-06 20:22:04 +01:00
Simon Rozman
73df1c0871 setupapi: Add DrvInfoDetailData.IsCompatible() to simplify HID detection 
Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-02-06 20:18:44 +01:00
Simon Rozman
069016bbc4 setupapi: Add SP_DRVINFO_DATA.IsNewer() method to simplify comparison 
Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-02-06 20:17:47 +01:00
Simon Rozman
3c29434a79 setupapi: Make toUTF16() public and add UTF16ToBuf() counterpart 
Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-02-06 20:15:40 +01:00
Jason A. Donenfeld
c599bf9497 Fix up errors and paths 2019-02-05 22:06:25 +09:00
Jason A. Donenfeld
f7f63765d1 conn: close ipv4 socket when ipv6 socket fails 2019-02-05 21:55:33 +09:00
Simon Rozman
3e8f2e3fa5 setupapi: Add support for driver info lists 
Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-02-05 16:29:17 +01:00
Simon Rozman
7b636380e5 setupapi: Move Go<>Windows struct marshaling to types_windows.go 
Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-02-05 14:03:28 +01:00
Simon Rozman
99a3b628e9 setupapi: Add support for SetupDi(Get|Set)DeviceRegistryProperty() 
Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-02-05 12:59:42 +01:00