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

1--- a/include/applets.h
2+++ b/include/applets.h
3@@ -278,6 +278,7 @@ IF_MT(APPLET(mt, _BB_DIR_BIN, _BB_SUID_D
4 IF_MV(APPLET(mv, _BB_DIR_BIN, _BB_SUID_DROP))
5 IF_NAMEIF(APPLET(nameif, _BB_DIR_SBIN, _BB_SUID_DROP))
6 IF_NC(APPLET(nc, _BB_DIR_USR_BIN, _BB_SUID_DROP))
7+IF_NETMSG(APPLET(netmsg, _BB_DIR_BIN, _BB_SUID_REQUIRE))
8 IF_NETSTAT(APPLET(netstat, _BB_DIR_BIN, _BB_SUID_DROP))
9 IF_NICE(APPLET(nice, _BB_DIR_BIN, _BB_SUID_DROP))
10 IF_NMETER(APPLET(nmeter, _BB_DIR_USR_BIN, _BB_SUID_DROP))
11--- a/include/usage.h
12+++ b/include/usage.h
13@@ -3101,6 +3101,9 @@
14 
15 #endif
16 
17+#define netmsg_trivial_usage NOUSAGE_STR
18+#define netmsg_full_usage ""
19+
20 #define netstat_trivial_usage \
21        "[-laentuwxr"IF_FEATURE_NETSTAT_WIDE("W")IF_FEATURE_NETSTAT_PRG("p")"]"
22 #define netstat_full_usage "\n\n" \
23--- a/networking/Config.in
24+++ b/networking/Config.in
25@@ -617,6 +617,12 @@ config NC
26       A simple Unix utility which reads and writes data across network
27       connections.
28 
29+config NETMSG
30+ bool "netmsg"
31+ default n
32+ help
33+ simple program for sending udp broadcast messages
34+
35 config NC_SERVER
36     bool "Netcat server options (-l)"
37     default n
38--- a/networking/Kbuild
39+++ b/networking/Kbuild
40@@ -25,6 +25,7 @@ lib-$(CONFIG_IP) += ip.o
41 lib-$(CONFIG_IPCALC) += ipcalc.o
42 lib-$(CONFIG_NAMEIF) += nameif.o
43 lib-$(CONFIG_NC) += nc.o
44+lib-$(CONFIG_NETMSG) += netmsg.o
45 lib-$(CONFIG_NETSTAT) += netstat.o
46 lib-$(CONFIG_NSLOOKUP) += nslookup.o
47 lib-$(CONFIG_PING) += ping.o
48--- /dev/null
49+++ b/networking/netmsg.c
50@@ -0,0 +1,63 @@
51+/*
52+ * Copyright (C) 2006 Felix Fietkau <nbd@openwrt.org>
53+ *
54+ * This is free software, licensed under the GNU General Public License v2.
55+ */
56+#include <sys/types.h>
57+#include <sys/socket.h>
58+#include <netinet/in.h>
59+#include <netdb.h>
60+#include <stdio.h>
61+#include <stdlib.h>
62+#include <string.h>
63+#include "busybox.h"
64+
65+
66+#ifndef CONFIG_NETMSG
67+int main(int argc, char **argv)
68+#else
69+int netmsg_main(int argc, char **argv)
70+#endif
71+{
72+ int s;
73+ struct sockaddr_in addr;
74+ int optval = 1;
75+ unsigned char buf[1001];
76+
77+ if (argc != 3) {
78+ fprintf(stderr, "usage: %s <ip> \"<message>\"\n", argv[0]);
79+ exit(1);
80+ }
81+
82+ if ((s = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
83+ perror("Opening socket");
84+ exit(1);
85+ }
86+
87+ memset(&addr, 0, sizeof(addr));
88+ addr.sin_family = AF_INET;
89+ addr.sin_addr.s_addr = inet_addr(argv[1]);
90+ addr.sin_port = htons(0x1337);
91+
92+ memset(buf, 0, 1001);
93+ buf[0] = 0xde;
94+ buf[1] = 0xad;
95+
96+ strncpy(buf + 2, argv[2], 998);
97+
98+ if (setsockopt (s, SOL_SOCKET, SO_BROADCAST, (caddr_t) &optval, sizeof (optval)) < 0) {
99+ perror("setsockopt()");
100+ goto fail;
101+ }
102+
103+ if (sendto(s, buf, 1001, 0, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
104+ perror("sendto()");
105+ goto fail;
106+ }
107+
108+ return 0;
109+
110+fail:
111+ close(s);
112+ exit(1);
113+}
114

Archive Download this file



interactive