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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 | 32373e10960c9f40561b52c815b92ad535e23039 (patch) | |
tree | 72f8ac6952822f67e3dcdfb20c0efbd617c4900d /src/tools/genkey.c | |
parent | build system: revamp building and configuration (diff) | |
download | wireguard-monolithic-historical-32373e10960c9f40561b52c815b92ad535e23039.tar.xz wireguard-monolithic-historical-32373e10960c9f40561b52c815b92ad535e23039.zip |
tools: 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);
}
}
Diffstat (limited to 'src/tools/genkey.c')
-rw-r--r-- | src/tools/genkey.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/src/tools/genkey.c b/src/tools/genkey.c index a312b46..af2765f 100644 --- a/src/tools/genkey.c +++ b/src/tools/genkey.c @@ -5,9 +5,11 @@ #include <unistd.h> #include <sys/types.h> #include <sys/stat.h> -#include <syscall.h> #include <string.h> #include <fcntl.h> +#ifdef __linux +#include <syscall.h> +#endif #include "curve25519.h" #include "base64.h" @@ -17,7 +19,7 @@ static inline ssize_t get_random_bytes(uint8_t *out, size_t len) { ssize_t ret; int fd; -#ifdef __NR_getrandom +#if defined(__NR_getrandom) && defined(__linux__) ret = syscall(__NR_getrandom, out, len, 0); if (ret >= 0) return ret; |