package/busybox/patches/300-netmsg.patch

   1 --- a/include/applets.src.h
   2 +++ b/include/applets.src.h
   3 @@ -266,6 +266,7 @@ IF_MT(APPLET(mt, BB_DIR_BIN, BB_SUID_DRO
   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_NOHUP(APPLET(nohup, BB_DIR_USR_BIN, BB_SUID_DROP))
  11 --- a/networking/Config.src
  12 +++ b/networking/Config.src
  13 @@ -612,6 +612,12 @@ config FEATURE_IPCALC_LONG_OPTIONS
  14         help
  15           Support long options for the ipcalc applet.
  16
  17 +config NETMSG
  18 +       bool "netmsg"
  19 +       default n
  20 +       help
  21 +         simple program for sending udp broadcast messages
  22 +
  23  config NETSTAT
  24         bool "netstat"
  25         default y
  26 --- a/networking/Kbuild.src
  27 +++ b/networking/Kbuild.src
  28 @@ -27,6 +27,7 @@ lib-$(CONFIG_IP)           += ip.o
  29  lib-$(CONFIG_IPCALC)       += ipcalc.o
  30  lib-$(CONFIG_NAMEIF)       += nameif.o
  31  lib-$(CONFIG_NC)           += nc.o
  32 +lib-$(CONFIG_NETMSG)       += netmsg.o
  33  lib-$(CONFIG_NETSTAT)      += netstat.o
  34  lib-$(CONFIG_NSLOOKUP)     += nslookup.o
  35  lib-$(CONFIG_NTPD)         += ntpd.o
  36 --- /dev/null
  37 +++ b/networking/netmsg.c
  38 @@ -0,0 +1,65 @@
  39 +/*
  40 + * Copyright (C) 2006 Felix Fietkau <nbd@openwrt.org>
  41 + *
  42 + * This is free software, licensed under the GNU General Public License v2.
  43 + */
  44 +#include <sys/types.h>
  45 +#include <sys/socket.h>
  46 +#include <netinet/in.h>
  47 +#include <netdb.h>
  48 +#include <stdio.h>
  49 +#include <stdlib.h>
  50 +#include <string.h>
  51 +#include "busybox.h"
  52 +
  53 +//usage:#define netmsg_trivial_usage NOUSAGE_STR
  54 +//usage:#define netmsg_full_usage ""
  55 +
  56 +#ifndef CONFIG_NETMSG
  57 +int main(int argc, char **argv)
  58 +#else
  59 +int netmsg_main(int argc, char **argv)
  60 +#endif
  61 +{
  62 +       int s;
  63 +       struct sockaddr_in addr;
  64 +       int optval = 1;
  65 +       unsigned char buf[1001];
  66 +
  67 +       if (argc != 3) {
  68 +               fprintf(stderr, "usage: %s <ip> \"<message>\"\n", argv[0]);
  69 +               exit(1);
  70 +       }
  71 +
  72 +       if ((s = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
  73 +               perror("Opening socket");
  74 +               exit(1);
  75 +       }
  76 +
  77 +       memset(&addr, 0, sizeof(addr));
  78 +       addr.sin_family = AF_INET;
  79 +       addr.sin_addr.s_addr = inet_addr(argv[1]);
  80 +       addr.sin_port = htons(0x1337);
  81 +
  82 +       memset(buf, 0, 1001);
  83 +       buf[0] = 0xde;
  84 +       buf[1] = 0xad;
  85 +
  86 +       strncpy(buf + 2, argv[2], 998);
  87 +
  88 +       if (setsockopt (s, SOL_SOCKET, SO_BROADCAST, (caddr_t) &optval, sizeof (optval)) < 0) {
  89 +               perror("setsockopt()");
  90 +               goto fail;
  91 +       }
  92 +
  93 +       if (sendto(s, buf, 1001, 0, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
  94 +               perror("sendto()");
  95 +               goto fail;
  96 +       }
  97 +
  98 +       return 0;
  99 +
 100 +fail:
 101 +       close(s);
 102 +       exit(1);
 103 +}