contrib/ipfilter/ipsend/ipresend.c

   1 /*      $FreeBSD$       */
   2
   3 /*
   4  * ipresend.c (C) 1995-1998 Darren Reed
   5  *
   6  * See the IPFILTER.LICENCE file for details on licencing.
   7  *
   8  */
   9 #if !defined(lint)
  10 static const char sccsid[] = "%W% %G% (C)1995 Darren Reed";
  11 static const char rcsid[] = "@(#)$Id: ipresend.c,v 2.4 2004/01/08 13:34:31 darrenr Exp $";
  12 #endif
  13 #include <sys/param.h>
  14 #include <sys/types.h>
  15 #include <sys/time.h>
  16 #include <sys/socket.h>
  17 #include <netinet/in.h>
  18 #include <arpa/inet.h>
  19 #include <netinet/in_systm.h>
  20 #include <netinet/ip.h>
  21 #ifndef linux
  22 #include <netinet/ip_var.h>
  23 #endif
  24 #include <stdio.h>
  25 #include <stdlib.h>
  26 #include <unistd.h>
  27 #include <netdb.h>
  28 #include <string.h>
  29 #include "ipsend.h"
  30
  31
  32 extern  char    *optarg;
  33 extern  int     optind;
  34 #ifndef NO_IPF
  35 extern  struct  ipread  snoop, pcap, etherf, iphex, tcpd, iptext;
  36 #endif
  37
  38 int     opts = 0;
  39 #ifndef DEFAULT_DEVICE
  40 # ifdef linux
  41 char    default_device[] = "eth0";
  42 # else
  43 #  ifdef        sun
  44 char    default_device[] = "le0";
  45 #  else
  46 #   ifdef       ultrix
  47 char    default_device[] = "ln0";
  48 #   else
  49 #    ifdef      __bsdi__
  50 char    default_device[] = "ef0";
  51 #    else
  52 #     ifdef     __sgi
  53 char    default_device[] = "ec0";
  54 #     else
  55 char    default_device[] = "lan0";
  56 #     endif
  57 #    endif
  58 #   endif
  59 #  endif
  60 # endif
  61 #else
  62 char    default_device[] = DEFAULT_DEVICE;
  63 #endif
  64
  65
  66 static  void    usage __P((char *));
  67 int     main __P((int, char **));
  68
  69
  70 static void usage(prog)
  71 char    *prog;
  72 {
  73         fprintf(stderr, "Usage: %s [options] <-r filename|-R filename>\n\
  74 \t\t-r filename\tsnoop data file to resend\n\
  75 \t\t-R filename\tlibpcap data file to resend\n\
  76 \toptions:\n\
  77 \t\t-d device\tSend out on this device\n\
  78 \t\t-g gateway\tIP gateway to use if non-local dest.\n\
  79 \t\t-m mtu\t\tfake MTU to use when sending out\n\
  80 ", prog);
  81         exit(1);
  82 }
  83
  84
  85 int main(argc, argv)
  86 int     argc;
  87 char    **argv;
  88 {
  89         struct  in_addr gwip;
  90         struct  ipread  *ipr = NULL;
  91         char    *name =  argv[0], *gateway = NULL, *dev = NULL;
  92         char    *resend = NULL;
  93         int     mtu = 1500, c;
  94
  95         while ((c = getopt(argc, argv, "EHPRSTXd:g:m:r:")) != -1)
  96                 switch (c)
  97                 {
  98                 case 'd' :
  99                         dev = optarg;
 100                         break;
 101                 case 'g' :
 102                         gateway = optarg;
 103                         break;
 104                 case 'm' :
 105                         mtu = atoi(optarg);
 106                         if (mtu < 28)
 107                             {
 108                                 fprintf(stderr, "mtu must be > 28\n");
 109                                 exit(1);
 110                             }
 111                 case 'r' :
 112                         resend = optarg;
 113                         break;
 114                 case 'R' :
 115                         opts |= OPT_RAW;
 116                         break;
 117 #ifndef NO_IPF
 118                 case 'E' :
 119                         ipr = &etherf;
 120                         break;
 121                 case 'H' :
 122                         ipr = &iphex;
 123                         break;
 124                 case 'P' :
 125                         ipr = &pcap;
 126                         break;
 127                 case 'S' :
 128                         ipr = &snoop;
 129                         break;
 130                 case 'T' :
 131                         ipr = &tcpd;
 132                         break;
 133                 case 'X' :
 134                         ipr = &iptext;
 135                         break;
 136 #endif
 137                 default :
 138                         fprintf(stderr, "Unknown option \"%c\"\n", c);
 139                         usage(name);
 140                 }
 141
 142         if (!ipr || !resend)
 143                 usage(name);
 144
 145         gwip.s_addr = 0;
 146         if (gateway && resolve(gateway, (char *)&gwip) == -1)
 147             {
 148                 fprintf(stderr,"Cant resolve %s\n", gateway);
 149                 exit(2);
 150             }
 151
 152         if (!dev)
 153                 dev = default_device;
 154
 155         printf("Device:  %s\n", dev);
 156         printf("Gateway: %s\n", inet_ntoa(gwip));
 157         printf("mtu:     %d\n", mtu);
 158
 159         return ip_resend(dev, mtu, ipr, gwip, resend);
 160 }