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

Index: busybox-1.4.2/include/applets.h
===================================================================
--- busybox-1.4.2.orig/include/applets.h	2007-06-04 13:21:32.210079992 +0200
+++ busybox-1.4.2/include/applets.h	2007-06-04 13:21:34.188779184 +0200
@@ -209,6 +209,7 @@
 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_NOUSAGE(netmsg, 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))
Index: busybox-1.4.2/networking/Config.in
===================================================================
--- busybox-1.4.2.orig/networking/Config.in	2007-06-04 13:21:32.216079080 +0200
+++ busybox-1.4.2/networking/Config.in	2007-06-04 13:21:34.188779184 +0200
@@ -458,6 +458,12 @@
 	help
 	  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 (-lp)"
Index: busybox-1.4.2/networking/Kbuild
===================================================================
--- busybox-1.4.2.orig/networking/Kbuild	2007-06-04 13:21:32.221078320 +0200
+++ busybox-1.4.2/networking/Kbuild	2007-06-04 13:21:34.188779184 +0200
@@ -27,6 +27,7 @@
 lib-$(CONFIG_IPTUNNEL)     += iptunnel.o
 lib-$(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
Index: busybox-1.4.2/networking/netmsg.c
===================================================================
--- /dev/null	1970-01-01 00:00:00.000000000 +0000
+++ busybox-1.4.2/networking/netmsg.c	2007-06-04 13:21:34.188779184 +0200
@@ -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);
+}