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/* Copyright (c) 2017, June McEnroe <programble@gmail.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
// Wake-on-LAN.
#include <sys/types.h>
#include <err.h>
#include <netinet/in.h>
#include <stdint.h>
#include <stdlib.h>
#include <sys/socket.h>
#include <sysexits.h>
#define MAC 0x04, 0x7D, 0x7B, 0xD5, 0x6A, 0x53
const uint8_t payload[] = {
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
MAC, MAC, MAC, MAC, MAC, MAC, MAC, MAC,
MAC, MAC, MAC, MAC, MAC, MAC, MAC, MAC,
};
int main() {
int sock = socket(PF_INET, SOCK_DGRAM, 0);
if (sock < 0) err(EX_OSERR, "socket");
int on = 1;
int error = setsockopt(sock, SOL_SOCKET, SO_BROADCAST, &on, sizeof(on));
if (error) err(EX_OSERR, "setsockopt");
struct sockaddr_in addr = {
.sin_family = AF_INET,
.sin_port = 9,
.sin_addr.s_addr = INADDR_BROADCAST,
};
ssize_t len = sendto(
sock, payload, sizeof(payload), 0,
(struct sockaddr *)&addr, sizeof(addr)
);
if (len < 0) err(EX_IOERR, "sendto");
return EX_OK;
}
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