diff options
author | Jason A. Donenfeld <Jason@zx2c4.com> | 2016-07-19 15:26:56 +0200 |
---|---|---|
committer | Jason A. Donenfeld <Jason@zx2c4.com> | 2016-07-20 22:04:56 +0200 |
commit | b16641e30c6d9d3de356ce8ba29fc84157ba07f0 (patch) | |
tree | 952b842e31bc5297634e08f9fe81da1b16f55be6 /src/showconf.c | |
parent | wg: fix numbering in man page (diff) | |
download | wireguard-tools-b16641e30c6d9d3de356ce8ba29fc84157ba07f0.tar.xz wireguard-tools-b16641e30c6d9d3de356ce8ba29fc84157ba07f0.zip |
wg: first additions of userspace integration
This is designed to work with a server that follows this:
struct sockaddr_un addr = {
.sun_family = AF_UNIX,
.sun_path = "/var/run/wireguard/wguserspace0.sock"
};
int fd, ret;
ssize_t len;
socklen_t socklen;
struct wgdevice *device;
fd = socket(AF_UNIX, SOCK_DGRAM, 0);
if (fd < 0)
exit(1);
if (bind(fd, (struct sockaddr *)&addr, sizeof(addr)) < 0)
exit(1);
for (;;) {
/* First we look at how big the next message is, so we know how much to
* allocate. Note on BSD you can instead use ioctl(fd, FIONREAD, &len). */
len = recv(fd, NULL, 0, MSG_PEEK | MSG_TRUNC);
if (len < 0) {
handle_error();
continue;
}
/* Next we allocate a buffer for the received data. */
device = NULL;
if (len) {
device = malloc(len);
if (!device) {
handle_error();
continue;
}
}
/* Finally we receive the data, storing too the return address. */
socklen = sizeof(addr);
len = recvfrom(fd, device, len, 0, (struct sockaddr *)&addr, (socklen_t *)&socklen);
if (len < 0) {
handle_error();
free(device);
continue;
}
if (!len) { /* If len is zero, it's a "get" request, so we send our device back. */
device = get_current_wireguard_device(&len);
sendto(fd, device, len, 0, (struct sockaddr *)&addr, socklen);
} else { /* Otherwise, we just received a wgdevice, so we should "set" and send back the return status. */
ret = set_current_wireguard_device(device);
sendto(fd, &ret, sizeof(ret), 0, (struct sockaddr *)&addr, socklen);
free(device);
}
}
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Diffstat (limited to 'src/showconf.c')
-rw-r--r-- | src/showconf.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/src/showconf.c b/src/showconf.c index 95d2e17..68084c0 100644 --- a/src/showconf.c +++ b/src/showconf.c @@ -31,13 +31,13 @@ int showconf_main(int argc, char *argv[]) return 1; } - if (!kernel_has_wireguard_interface(argv[1])) { + if (!has_wireguard_interface(argv[1])) { fprintf(stderr, "`%s` is not a valid WireGuard interface\n", argv[1]); fprintf(stderr, "Usage: %s %s <interface>\n", PROG_NAME, argv[0]); return 1; } - if (kernel_get_device(&device, argv[1])) { + if (get_device(&device, argv[1])) { perror("Unable to get device"); goto cleanup; } |