1/*	$FreeBSD: stable/11/contrib/ipfilter/ipsend/ipresend.c 369245 2021-02-09 13:47:46Z git2svn $	*/
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)
10static const char sccsid[] = "%W% %G% (C)1995 Darren Reed";
11static const char rcsid[] = "@(#)$Id$";
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#include <netinet/ip_var.h>
22#include <stdio.h>
23#include <stdlib.h>
24#include <unistd.h>
25#include <netdb.h>
26#include <string.h>
27#include "ipsend.h"
28
29
30extern	char	*optarg;
31extern	int	optind;
32#ifndef	NO_IPF
33extern	struct	ipread	pcap, iphex, iptext;
34#endif
35
36int	opts = 0;
37#ifndef	DEFAULT_DEVICE
38#  ifdef	sun
39char	default_device[] = "le0";
40#  else
41char	default_device[] = "lan0";
42#  endif
43#else
44char	default_device[] = DEFAULT_DEVICE;
45#endif
46
47
48static	void	usage(char *);
49int	main(int, char **);
50
51
52static void usage(prog)
53	char	*prog;
54{
55	fprintf(stderr, "Usage: %s [options] <-r filename|-R filename>\n\
56\t\t-r filename\tsnoop data file to resend\n\
57\t\t-R filename\tlibpcap data file to resend\n\
58\toptions:\n\
59\t\t-d device\tSend out on this device\n\
60\t\t-g gateway\tIP gateway to use if non-local dest.\n\
61\t\t-m mtu\t\tfake MTU to use when sending out\n\
62", prog);
63	exit(1);
64}
65
66
67int main(argc, argv)
68	int	argc;
69	char	**argv;
70{
71	struct	in_addr	gwip;
72	struct	ipread	*ipr = NULL;
73	char	*name =  argv[0], *gateway = NULL, *dev = NULL;
74	char	*resend = NULL;
75	int	mtu = 1500, c;
76
77	while ((c = getopt(argc, argv, "EHPRSTXd:g:m:r:")) != -1)
78		switch (c)
79		{
80		case 'd' :
81			dev = optarg;
82			break;
83		case 'g' :
84			gateway = optarg;
85			break;
86		case 'm' :
87			mtu = atoi(optarg);
88			if (mtu < 28)
89			    {
90				fprintf(stderr, "mtu must be > 28\n");
91				exit(1);
92			    }
93		case 'r' :
94			resend = optarg;
95			break;
96		case 'R' :
97			opts |= OPT_RAW;
98			break;
99#ifndef	NO_IPF
100		case 'H' :
101			ipr = &iphex;
102			break;
103		case 'P' :
104			ipr = &pcap;
105			break;
106		case 'X' :
107			ipr = &iptext;
108			break;
109#endif
110		default :
111			fprintf(stderr, "Unknown option \"%c\"\n", c);
112			usage(name);
113		}
114
115	if (!ipr || !resend)
116		usage(name);
117
118	gwip.s_addr = 0;
119	if (gateway && resolve(gateway, (char *)&gwip) == -1)
120	    {
121		fprintf(stderr,"Cant resolve %s\n", gateway);
122		exit(2);
123	    }
124
125	if (!dev)
126		dev = default_device;
127
128	printf("Device:  %s\n", dev);
129	printf("Gateway: %s\n", inet_ntoa(gwip));
130	printf("mtu:     %d\n", mtu);
131
132	return ip_resend(dev, mtu, ipr, gwip, resend);
133}
134