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/* $Id: xprobe.c,v 1.12 2001/10/14 18:48:01 fygrave Exp $ */
/*
** Copyright (C) 2001 Fyodor Yarochkin <fygrave@tigerteam.net>,
** Ofir Arkin <ofir@sys-security.com>
**
** This program is free software; you can redistribute it and/or modify
** it under the terms of the GNU General Public License as published by
** the Free Software Foundation; either version 2 of the License, or
** (at your option) any later version.
**
** All material for nonprofit, educational use only.
**
** This program is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
** GNU General Public License for more details.
**
** You should have received a copy of the GNU General Public License
** along with this program; if not, write to the Free Software
** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include "xprobe.h"
TIMEZONE_T tz;
/* global flags */
int receive_timeout = DEF_TIMEOUT;
char verbose = 0;
unsigned short udp_portno = 0;
FILE *logfn = NULL;
int main(int argc, char **argv) {
hstnet_t targnet;
int c;
char *iname = NULL;
char *logfile = NULL;
fprintf(stderr,"%s\n",BANNER);
while((c = getopt(argc, argv, "vi:p:ho:t:")) !=EOF)
switch(c) {
case 'v':
verbose++;
break;
case 'o':
logfile = optarg;
break;
case 'i':
iname = optarg;
break;
case 't':
receive_timeout = atoi(optarg);
if (receive_timeout <1) {
fprintf(stderr,"Incorrect receive timeout %s\n", optarg);
usage(argv[0]);
}
break;
case 'p':
udp_portno = (unsigned short)atoi(optarg);
if (!udp_portno) {
fprintf(stderr,"Incorrect port number %s!\n", optarg);
usage(argv[0]);
}
break;
case 'h':
default:
usage(argv[0]);
}
if (argc < optind + 1)
usage(argv[0]);
if (parse_hostname(argv[optind],&targnet)<0) {
fprintf(stderr,"error while parsing/resolving: %s\n",
argv[optind]);
exit(1);
}
if(init_pcap(iname, argv[optind], &targnet) < 0) {
fprintf(stderr,"Failed to initialize lipcap!\n");
exit(1);
}
if (logfile) {
if (( logfn = fopen(logfile,"a")) == NULL) {
fprintf(stderr,"Error opening file %s: %s\n",
logfile, strerror(errno));
exit(1);
}
if (verbose)
printf("Logging into: %s\n", logfile);
} else {
logfn = stderr;
}
srand(time(NULL)); /* let us look random abit */
do_scan(&targnet);
if (logfile)
fclose(logfn);
return 0;
}
void usage(char *name) {
fprintf(stderr,"usage: %s [-p portnum] [-i interface] [-v]"
" host[/netmask] [-o logfile]\n", name);
exit(1);
}
void do_scan(hstnet_t *targ) {
struct sockaddr_in to;
unsigned long targhost;
to.sin_family = AF_INET;
bcopy((void *)&targ->addr,(void *)&to.sin_addr,
sizeof(struct in_addr));
log_message("Target: %s", inet_ntoa(to.sin_addr));
bcopy((void *)&targ->netmask,(void *)&to.sin_addr,
sizeof(struct in_addr));
log_message("Netmask: %s", inet_ntoa(to.sin_addr));
targhost = ntohl(targ->addr);
do {
scan_host(htonl(targhost));
} while(htonl(targhost++) != (targ->addr|
(targ->netmask^0xffffffff)));
}
int scan_host(unsigned long host) {
struct sockaddr_in to;
to.sin_family = AF_INET;
bcopy((void *)&host,(void *)&to.sin_addr,
sizeof(struct in_addr));
log_message("probing: %s", inet_ntoa(to.sin_addr));
return(do_logic(to));
}
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