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- --- /dev/null
- +++ b/networking/netmsg.c
- @@ -0,0 +1,76 @@
- +/*
- + * Copyright (C) 2006 Felix Fietkau <nbd@nbd.name>
- + *
- + * This is free software, licensed under the GNU General Public License v2.
- + */
- +
- +//config:config NETMSG
- +//config: bool "netmsg"
- +//config: default n
- +//config: help
- +//config: simple program for sending udp broadcast messages
- +
- +//applet:IF_NETMSG(APPLET(netmsg, BB_DIR_BIN, BB_SUID_REQUIRE))
- +
- +//kbuild:lib-$(CONFIG_NETMSG) += netmsg.o
- +
- +//usage:#define netmsg_trivial_usage NOUSAGE_STR
- +//usage:#define netmsg_full_usage ""
- +
- +#include <sys/types.h>
- +#include <sys/socket.h>
- +#include <netinet/in.h>
- +#include <netdb.h>
- +#include <stdio.h>
- +#include <stdlib.h>
- +#include <string.h>
- +#include "busybox.h"
- +
- +#ifndef CONFIG_NETMSG
- +int main(int argc, char **argv)
- +#else
- +int netmsg_main(int argc, char **argv)
- +#endif
- +{
- + int s;
- + struct sockaddr_in addr;
- + int optval = 1;
- + unsigned char buf[1001];
- +
- + if (argc != 3) {
- + fprintf(stderr, "usage: %s <ip> \"<message>\"\n", argv[0]);
- + exit(1);
- + }
- +
- + if ((s = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
- + perror("Opening socket");
- + exit(1);
- + }
- +
- + memset(&addr, 0, sizeof(addr));
- + addr.sin_family = AF_INET;
- + addr.sin_addr.s_addr = inet_addr(argv[1]);
- + addr.sin_port = htons(0x1337);
- +
- + memset(buf, 0, 1001);
- + buf[0] = 0xde;
- + buf[1] = 0xad;
- +
- + strncpy(buf + 2, argv[2], 998);
- +
- + if (setsockopt (s, SOL_SOCKET, SO_BROADCAST, (caddr_t) &optval, sizeof (optval)) < 0) {
- + perror("setsockopt()");
- + goto fail;
- + }
- +
- + if (sendto(s, buf, 1001, 0, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
- + perror("sendto()");
- + goto fail;
- + }
- +
- + return 0;
- +
- +fail:
- + close(s);
- + exit(1);
- +}
|
