openwrtv4/package/busybox/patches/300-netmsg.patch

--- a/include/applets.h
+++ b/include/applets.h
@@ -263,6 +263,7 @@ USE_MT(APPLET(mt, _BB_DIR_BIN, _BB_SUID_
 USE_MV(APPLET(mv, _BB_DIR_BIN, _BB_SUID_NEVER))
 USE_NAMEIF(APPLET(nameif, _BB_DIR_SBIN, _BB_SUID_NEVER))
 USE_NC(APPLET(nc, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
+USE_NETMSG(APPLET(netmsg, _BB_DIR_BIN, _BB_SUID_ALWAYS))
 USE_NETSTAT(APPLET(netstat, _BB_DIR_BIN, _BB_SUID_NEVER))
 USE_NICE(APPLET(nice, _BB_DIR_BIN, _BB_SUID_NEVER))
 USE_NMETER(APPLET(nmeter, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
--- a/include/usage.h
+++ b/include/usage.h
@@ -2849,6 +2849,9 @@
 
 #endif
 
+#define netmsg_trivial_usage NOUSAGE_STR
+#define netmsg_full_usage ""
+
 #define netstat_trivial_usage \
        "[-laentuwxr"USE_FEATURE_NETSTAT_WIDE("W")USE_FEATURE_NETSTAT_PRG("p")"]"
 #define netstat_full_usage "\n\n" \
--- a/networking/Config.in
+++ b/networking/Config.in
@@ -603,6 +603,12 @@ config NC
 	  A simple Unix utility which reads and writes data across network
 	  connections.
 
+config NETMSG
+	bool "netmsg"
+	default n
+	help
+	  simple program for sending udp broadcast messages
+
 config NC_SERVER
 	bool "Netcat server options (-l)"
 	default n
--- a/networking/Kbuild
+++ b/networking/Kbuild
@@ -23,6 +23,7 @@ lib-$(CONFIG_IP)           += ip.o
 lib-$(CONFIG_IPCALC)       += ipcalc.o
 lib-$(CONFIG_NAMEIF)       += nameif.o
 lib-$(CONFIG_NC)           += nc.o
+lib-$(CONFIG_NETMSG)       += netmsg.o
 lib-$(CONFIG_NETSTAT)      += netstat.o
 lib-$(CONFIG_NSLOOKUP)     += nslookup.o
 lib-$(CONFIG_PING)         += ping.o
--- /dev/null
+++ b/networking/netmsg.c
@@ -0,0 +1,63 @@
+/*
+ * Copyright (C) 2006 Felix Fietkau <nbd@openwrt.org>
+ *
+ * This is free software, licensed under the GNU General Public License v2.
+ */
+#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);
+}