Move C code to bin, Makefile, AGPL

1 files changed, 55 insertions, 0 deletions

diff --git a/bin/wake.c b/bin/wake.c
new file mode 100644
index 00000000..07a2ef37
--- /dev/null
+++ b/bin/wake.c
@@ -0,0 +1,55 @@
+/* Wake-on-LAN.
+ *
+ * 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/>.
+ */
+
+#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;
+}