Commit graph

217 commits

Author SHA1 Message Date
Tobias Klauser 8ae09213a7 tun: use IoctlCtlInfo from golang.org/x/sys/unix on macOS
Direct syscalls using unix.Syscall(unix.SYS_*, ...) are discouraged on
macOS and might not be supported in future versions. Switch to use
unix.IoctlCtlInfo to get the kernel control info.

Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2020-10-27 16:20:09 +01:00
Tobias Klauser 36dc8b6994 tun: use GetsockoptString in (*NativeTun).Name on macOS
Direct syscalls using unix.Syscall(unix.SYS_*, ...) are discouraged on
macOS and might not be supported in future versions. Instead, use the
existing unix.GetsockoptString wrapper to get the interface name.

Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2020-10-27 16:20:09 +01:00
Brad Fitzpatrick 58a8f05f50 tun/wintun/registry: fix Go 1.15 race/checkptr failure
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
[Jason: ran go mod tidy.]
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2020-10-21 18:26:10 +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
Simon Rozman fdba6c183a wintun: make remaining HWID comparisons case insensitive
c85e4a410f introduced preliminary HWID
checking to speed up Wintun adapter enumeration. However, all HWID are
case insensitive by Windows convention.

Furthermore, a device might have multiple HWIDs. When DevInfo's
DeviceRegistryProperty(SPDRP_HARDWAREID) method returns []string, all
strings returned should be checked against given hardware ID.

This issue was discovered when researching Wintun and wireguard-go on
Windows 10 ARM64. The Wintun adapter was created using devcon.exe
utility with "wintun" hardware ID, causing wireguard-go fail to
enumerate the adapter properly.

Signed-off-by: Simon Rozman <simon@rozman.si>
2020-05-02 01:50:47 -06:00
Simon Rozman 250b9795f3 setupapi: extend struct size constant definitions for arm(64)
Signed-off-by: Simon Rozman <simon@rozman.si>
2020-05-02 01:50:47 -06:00
Brad Fitzpatrick 2fb0a712f0 tun: return a better error message if /dev/net/tun doesn't exist
It was just returning "no such file or directory" (the String of the
syscall.Errno returned by CreateTUN).

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2020-05-02 01:50:47 -06:00
Avery Pennarun c76b818466 tun: NetlinkListener: don't send EventDown before sending EventUp
This works around a startup race condition when competing with
HackListener, which is trying to do the same job. If HackListener
detects that the tundev is running while there is still an event in the
netlink queue that says it isn't running, then the device receives a
string of events like
	EventUp (HackListener)
	EventDown (NetlinkListener)
	EventUp (NetlinkListener)
Unfortunately, after the first EventDown, the device stops itself,
thinking incorrectly that the administrator has downed its tundev.

The device is ignoring the initial EventDown anyway, so just don't emit
it.

Signed-off-by: Avery Pennarun <apenwarr@tailscale.com>
2020-05-02 01:46:42 -06:00
David Crawshaw 1a1c3d0968 tuntest: split out testing package
This code is useful to other packages writing tests.

Signed-off-by: David Crawshaw <crawshaw@tailscale.com>
2020-05-02 01:46:42 -06:00
Brad Fitzpatrick 85a45a9651 tun: fix data race on name field
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2020-05-02 01:46:42 -06:00
Brad Fitzpatrick abd287159e tun: remove unused isUp method
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2020-05-02 01:46:42 -06:00
Avery Pennarun 6aefb61355 wintun: split error message for create vs open namespace.
Signed-off-by: Avery Pennarun <apenwarr@tailscale.com>
2020-05-02 01:44:58 -06:00
Tobias Klauser b33219c2cf global: use RTMGRP_* consts from x/sys/unix
Update the golang.org/x/sys/unix dependency and use the newly introduced
RTMGRP_* consts instead of using the corresponding RTNLGRP_* const to
create a mask.

Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2020-03-17 23:07:11 -06:00
Jason A. Donenfeld caebdfe9d0 tun: darwin: ignore ENOMEM errors
Coauthored-by: Andrej Mihajlov <and@mullvad.net>
2020-01-15 13:39:37 -05:00
Jason A. Donenfeld 4fa2ea6a2d tun: windows: serialize write calls 2020-01-07 11:40:45 -05:00
Jason A. Donenfeld 2b242f9393 wintun: manage ring memory manually
It's large and Go's garbage collector doesn't deal with it especially
well.
2019-11-22 13:13:55 +01:00
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 fd23c66fcd namespaceapi: remove tasteless comment 2019-10-21 09:02:29 +02:00
Jason A. Donenfeld 95fbfccf60 wintun: normalize variable names for their types 2019-10-17 15:30:56 +02:00
Avery Pennarun c85e4a410f wintun: quickly ignore non-Wintun devices
Some devices take ~2 seconds to enumerate on Windows if we try to get
their instance name.  The hardware id property, on the other hand,
is available right away.

Signed-off-by: Avery Pennarun <apenwarr@gmail.com>
[zx2c4: inlined this to where it makes sense, reused setupapi const]
2019-10-17 15:19:20 +02:00
Avery Pennarun 1b6c8ddbe8 tun: match windows CreateTUN signature to the Linux variant
Signed-off-by: Avery Pennarun <apenwarr@gmail.com>
[zx2c4: fix default value]
2019-10-17 15:19:20 +02:00
Jason A. Donenfeld 1f146a5e7a wintun: expose version 2019-10-08 09:58:58 +02:00
Jason A. Donenfeld cb8d01f58a mod: bump versions 2019-10-04 11:41:02 +02:00
Jason A. Donenfeld 01f8ef4e84 winpipe: use x/sys/windows instead of syscall 2019-09-16 23:39:16 -06:00
Jason A. Donenfeld 70f6c42556 wintun: use correct length for security attributes 2019-09-16 19:38:33 -06:00
Jason A. Donenfeld bb0b2514c0 tun: windows: unify error message format 2019-09-08 13:52:44 -05:00
Jason A. Donenfeld 4cd06c0925 tun: openbsd: check for interface already being up
In some cases, we operate on an already-up interface, or the user brings
up the interface before we start monitoring. For those situations, we
should first check if the interface is already up.

This still technically races between the initial check and the start of
the route loop, but fixing that is a bit ugly and probably not worth it
at the moment.

Reported-by: Theo Buehler <tb@theobuehler.org>
2019-09-07 00:13:23 -05:00
Jason A. Donenfeld d12eb91f9a namespaceapi: AddSIDToBoundaryDescriptor modifies the handle 2019-09-05 21:48:21 -06:00
Jason A. Donenfeld 73d3bd9cd5 wintun: take mutex first always
This prevents an ABA deadlock with setupapi's internal locks.
2019-09-01 21:32:28 -06:00
Jason A. Donenfeld f3dba4c194 wintun: consider abandoned mutexes as released 2019-09-01 21:25:47 -06:00
Jason A. Donenfeld 950ca2ba8c wintun: put mutex into private namespace 2019-08-30 11:03:21 -06:00
Jason A. Donenfeld df2bf34373 namespaceapi: fix mistake 2019-08-30 09:59:36 -06:00
Simon Rozman a12b765784 namespaceapi: initial version
Signed-off-by: Simon Rozman <simon@rozman.si>
2019-08-30 15:34:17 +02:00
Jason A. Donenfeld 14df9c3e75 wintun: take mutex so that deletion uses the right name 2019-08-30 15:34:17 +02:00
Jason A. Donenfeld 353f0956bc wintun: move ring constants into module 2019-08-29 13:22:17 -06:00
Jason A. Donenfeld fa7763c268 wintun: delete all interfaces is not used anymore 2019-08-29 12:22:15 -06:00
Jason A. Donenfeld d94bae8348 wintun: Wintun->Interface 2019-08-29 12:20:40 -06:00
Jason A. Donenfeld 7689d09336 wintun: keep reference to pool in wintun object 2019-08-29 12:13:16 -06:00
Simon Rozman 69c26dc258 wintun: introduce adapter pools
This makes wintun package reusable for non-WireGuard applications.

Signed-off-by: Simon Rozman <simon@rozman.si>
2019-08-29 18:00:44 +02:00
Jason A. Donenfeld e862131d3c wintun: simplify rename logic 2019-08-28 19:31:20 -06:00
Jason A. Donenfeld da28a3e9f3 wintun: give better errors when ndis interface listing fails 2019-08-28 08:39:26 -06:00
Jason A. Donenfeld 3bf3322b2c wintun: also check for numbered suffix and friendly name 2019-08-28 08:08:07 -06:00
Simon Rozman 7305b4ce93 wintun: upgrade deleting all interfaces and make it reusable
DeleteAllInterfaces() didn't check if SPDRP_DEVICEDESC == "WireGuard
Tunnel". It deleted _all_ Wintun adapters, not just WireGuard's.

Furthermore, the DeleteAllInterfaces() was upgraded into a new function
called DeleteMatchingInterfaces() for selectively deletion. This will
be used by WireGuard to clean stale Wintun adapters.

Signed-off-by: Simon Rozman <simon@rozman.si>
2019-08-28 11:39:01 +02:00
Jason A. Donenfeld 26fb615b11 wintun: cleanup earlier 2019-08-27 11:59:15 -06:00
Jason A. Donenfeld 7fbb24afaa wintun: rename duplicate adapters instead of ourselves 2019-08-27 11:59:15 -06:00
Jason A. Donenfeld d9008ac35c wintun: match suffix numbers 2019-08-26 14:46:43 -06:00
Jason A. Donenfeld 0c540ad60e wintun: make description consistent across fields 2019-08-24 12:29:17 +02:00
Jason A. Donenfeld 3cedc22d7b wintun: try multiple names until one isn't a duplicate 2019-08-22 08:52:59 +02:00
Jason A. Donenfeld 68fea631d8 wintun: use nci.dll directly instead of buggy netshell 2019-08-21 09:16:12 +02:00
Jason A. Donenfeld ef23100a4f wintun: set friendly a bit better
This is still wrong, but NETSETUPPKEY_Driver_FriendlyName seems a bit
tricky to use.
2019-08-20 16:06:55 +02:00