package/busybox/patches/300-netmsg.patch

   1 --- a/include/applets.src.h
   2 +++ b/include/applets.src.h
   3 @@ -256,6 +256,7 @@ 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.src.h
  12 +++ b/include/usage.src.h
  13 @@ -1,3 +1,4 @@
  14 +
  15  /* vi: set sw=8 ts=8: */
  16  /*
  17   * This file suffers from chronically incorrect tabification
  18 @@ -2706,6 +2707,9 @@ INSERT
  19         " or\n" \
  20         "$ nameif -c /etc/my_mactab_file\n" \
  21
  22 +#define netmsg_trivial_usage NOUSAGE_STR
  23 +#define netmsg_full_usage ""
  24 +
  25  #define nmeter_trivial_usage \
  26         "format_string"
  27  #define nmeter_full_usage "\n\n" \
  28 --- a/networking/Config.src
  29 +++ b/networking/Config.src
  30 @@ -640,6 +640,12 @@ config FEATURE_NAMEIF_EXTENDED
  31             new_interface_name  mac=00:80:C8:38:91:B5
  32             new_interface_name  00:80:C8:38:91:B5
  33
  34 +config NETMSG
  35 +       bool "netmsg"
  36 +       default n
  37 +       help
  38 +         simple program for sending udp broadcast messages
  39 +
  40  config NETSTAT
  41         bool "netstat"
  42         default y
  43 --- a/networking/Kbuild.src
  44 +++ b/networking/Kbuild.src
  45 @@ -27,6 +27,7 @@ lib-$(CONFIG_IP)           += ip.o
  46  lib-$(CONFIG_IPCALC)       += ipcalc.o
  47  lib-$(CONFIG_NAMEIF)       += nameif.o
  48  lib-$(CONFIG_NC)           += nc.o
  49 +lib-$(CONFIG_NETMSG)       += netmsg.o
  50  lib-$(CONFIG_NETSTAT)      += netstat.o
  51  lib-$(CONFIG_NSLOOKUP)     += nslookup.o
  52  lib-$(CONFIG_NTPD)         += ntpd.o
  53 --- /dev/null
  54 +++ b/networking/netmsg.c
  55 @@ -0,0 +1,63 @@
  56 +/*
  57 + * Copyright (C) 2006 Felix Fietkau <nbd@openwrt.org>
  58 + *
  59 + * This is free software, licensed under the GNU General Public License v2.
  60 + */
  61 +#include <sys/types.h>
  62 +#include <sys/socket.h>
  63 +#include <netinet/in.h>
  64 +#include <netdb.h>
  65 +#include <stdio.h>
  66 +#include <stdlib.h>
  67 +#include <string.h>
  68 +#include "busybox.h"
  69 +
  70 +
  71 +#ifndef CONFIG_NETMSG
  72 +int main(int argc, char **argv)
  73 +#else
  74 +int netmsg_main(int argc, char **argv)
  75 +#endif
  76 +{
  77 +       int s;
  78 +       struct sockaddr_in addr;
  79 +       int optval = 1;
  80 +       unsigned char buf[1001];
  81 +
  82 +       if (argc != 3) {
  83 +               fprintf(stderr, "usage: %s <ip> \"<message>\"\n", argv[0]);
  84 +               exit(1);
  85 +       }
  86 +
  87 +       if ((s = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
  88 +               perror("Opening socket");
  89 +               exit(1);
  90 +       }
  91 +
  92 +       memset(&addr, 0, sizeof(addr));
  93 +       addr.sin_family = AF_INET;
  94 +       addr.sin_addr.s_addr = inet_addr(argv[1]);
  95 +       addr.sin_port = htons(0x1337);
  96 +
  97 +       memset(buf, 0, 1001);
  98 +       buf[0] = 0xde;
  99 +       buf[1] = 0xad;
 100 +
 101 +       strncpy(buf + 2, argv[2], 998);
 102 +
 103 +       if (setsockopt (s, SOL_SOCKET, SO_BROADCAST, (caddr_t) &optval, sizeof (optval)) < 0) {
 104 +               perror("setsockopt()");
 105 +               goto fail;
 106 +       }
 107 +
 108 +       if (sendto(s, buf, 1001, 0, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
 109 +               perror("sendto()");
 110 +               goto fail;
 111 +       }
 112 +
 113 +       return 0;
 114 +
 115 +fail:
 116 +       close(s);
 117 +       exit(1);
 118 +}