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- Committer: Bazaar Package Importer
- Author(s): Norbert Tretkowski
- Date: 2004-02-17 22:14:21 UTC
- Revision ID: james.westby@ubuntu.com-20040217221421-f1h39tzviblbp2lh
Tags: upstream-0.2.0
Import upstream version 0.2.0
- files added:
- include
- missing
- ncurses
added
removed
common.c
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/*
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NAST
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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/*
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Common functions
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*/
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#include "include/nast.h"
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#include <stdarg.h>
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/* run complex plugins here */
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/* r: reset a connection
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* s: follow tcp stream
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* M: multi_scanner
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* S: single port_scanner
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*/
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int runcplx (char what, char *dev, int l)
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{
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u_long ip_dst, ip_src;
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u_short port_dst, port_src;
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libnet_plist_t plist, *plist_p;
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char buff[50];
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u_short i;
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libnet_t *L;
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char errbuf[PCAP_ERRBUF_SIZE];
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i = 0;
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if ((L = libnet_init (LIBNET_LINK, NULL, errbuf))==NULL)
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{
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w_error(1,"Error loading libnet core!\n");
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}
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switch (what)
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{
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case 'r':
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/* don't touch here */
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error:
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puts ("Type connection extremes");
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puts ("------------------------");
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do
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{
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if (i) printf ("Cannot resolve input address, type again!\n");
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printf ("1 ip / hostname : ");
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fgets (buff, 50, stdin);
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if ((ip_src = libnet_name2addr4(L, dn (buff), LIBNET_RESOLVE))==-1)
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{
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w_error(1,"Error: %s\n", libnet_geterror(L));
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}
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i ++;
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}
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while (ip_src == -1);
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i = 0;
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printf ("1 port (0 to autodetect) : ");
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fgets (buff, 50, stdin);
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port_src = atoi(buff);
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do
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{
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if (i) printf ("Cannot resolve input address, type again!\n");
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printf ("2 ip / hostname : ");
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fgets (buff, 50, stdin);
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if ((ip_dst = libnet_name2addr4(L, dn (buff), LIBNET_RESOLVE))==-1)
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{
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w_error(1, "Error: %s\n", libnet_geterror(L));
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}
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i++;
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}
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while (ip_dst == -1);
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printf ("2 port (0 to autodetect) : ");
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fgets (buff, 50, stdin);
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port_dst = atoi(buff);
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if (!port_src && !port_dst)
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{
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printf ("\nOnly one port can be zero\n");
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i=0;
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goto error;
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}
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printf ("\n");
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/* demonize */
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if (demonize)
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printf ("Is very useless demonize me now! Omit\n\n");
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rst (dev, ip_src, ip_dst, port_src, port_dst);
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break;
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case 's':
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puts ("Type connection extremes");
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puts ("------------------------");
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do
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{
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if (i) printf ("Cannot resolve input address, type again!\n");
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printf ("1st ip : ");
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fgets (buff, 50, stdin);
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if ((ip_src = libnet_name2addr4(L, dn (buff), LIBNET_RESOLVE))==-1)
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{
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w_error(1,"Error: %s\n", libnet_geterror(L));
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}
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i ++;
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}
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while (ip_src == -1);
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printf ("1st port : ");
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fgets (buff, 50, stdin);
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port_src = atoi(buff);
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i = 0;
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do
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{
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if (i) printf ("Cannot resolve input address, type again!\n");
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printf ("2nd : ");
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fgets (buff, 50, stdin);
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if ((ip_dst = libnet_name2addr4(L, dn (buff), LIBNET_RESOLVE))==-1)
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{
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w_error(1, "Error: %s\n", libnet_geterror(L));
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}
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i++;
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}
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while (ip_dst == -1);
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printf ("2nd port : ");
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fgets (buff, 50, stdin);
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port_dst = atoi(buff);
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printf ("\n");
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/* demonize */
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if (demonize)
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bkg();
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stream (dev, ip_src, ip_dst, port_src, port_dst,l);
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break;
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case 'S':
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printf("Port Scanner extremes\n");
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printf("Insert IP to scan : ");
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fgets(buff ,50 ,stdin);
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if ((ip_dst = libnet_name2addr4(L, dn(buff), LIBNET_RESOLVE))==-1)
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{
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w_error(1, "Error: %s\n", libnet_geterror(L));
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}
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do
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{
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bzero(buff,50);
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printf("Insert Port range : ");
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fgets(buff ,50 ,stdin);
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}
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while (atoi(dn(buff)) < 1 || atoi(dn(buff)) > 65536);
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plist_p = &plist;
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if (libnet_plist_chain_new(L, &plist_p, dn(buff)) == -1)
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{
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w_error(1, "Bad token in port list: %s\n",libnet_geterror(L));
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}
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printf("\n");
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/* demonize */
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if (demonize)
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printf ("Is very useless demonize for single portscan! Omit\n\n");
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port(dev,ip_dst,plist_p,l);
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break;
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case 'M':
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printf("Port Scanner extremes\n");
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do
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{
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printf("Insert Port range : ");
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fgets(buff ,50 ,stdin);
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}
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while (atoi(dn(buff)) < 1 || atoi(dn(buff)) > 65536);
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plist_p = &plist;
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if (libnet_plist_chain_new(L, &plist_p, dn(buff) )== -1)
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{
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w_error(1, "Bad token in port list: %s\n",libnet_geterror(L));
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}
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printf("\n");
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/* demonize */
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if (demonize)
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bkg();
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mhport (dev,plist_p,l);
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break;
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}
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if (L) libnet_destroy(L);
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return 0;
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}
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/* delete \n */
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char * dn (char * s)
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{
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if (s[strlen(s)-1]=='\n')
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s[strlen(s)-1]='\0';
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return s;
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}
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/* open a file to log to */
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void openfile(void)
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{
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if ((logd = (fopen(logname,"w"))) == NULL)
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{
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w_error(1, "Unable to open logfile descriptor: %s\n\n", strerror(errno));
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}
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}
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/* signal handler */
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void sigexit()
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{
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#ifdef HAVE_LIBNCURSES
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# include <ncurses.h>
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if(graph)
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{
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endwin();
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printf("Thank you for using NAST\n\n");
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exit(0);
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}
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#endif
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if (!tr && sniff_glob)
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{
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if (pcap_stats(descr,&statistic) < 0)
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w_error(1, "Error: pcap_stats: %s\n", pcap_geterr(descr));
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else
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{
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printf("\n\nPackets Received:\t\t%d\n", statistic.ps_recv);
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printf("Packets Dropped by kernel:\t%d\n", statistic.ps_drop);
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}
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}
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if (tl)
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pcap_dump_close(dumper);
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if (logd)
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fclose(logd);
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exit(0);
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}
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/* demonize process */
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void bkg(void)
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{
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if (fork()) exit(0);
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printf ("\nRunning in background with PID %d\n", getpid());
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puts("\n");
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fclose (stdout);
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}
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/* convert u_char to "##:##:##...##" format */
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char * nast_hex_ntoa (u_char *s)
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{
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char *r = calloc (18, sizeof (char));
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sprintf (r, "%02X:%02X:%02X:%02X:%02X:%02X",
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s[0], s[1], s[2], s[3], s[4], s[5]);
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return r;
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}
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/* convert u_char[4] to "###.###.###.###" format */
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char * nast_atoda (u_char *s) /* array to dot array */
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{
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char *r = calloc (16, sizeof (char));
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sprintf (r, "%d.%d.%d.%d", s[0], s[1], s[2], s[3]);
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return r;
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}
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void n_print(char *wins, int y, int x, int lg, char *string, ...)
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{
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char msg[2048];
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int n;
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va_list ap;
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va_start(ap, string);
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n = vsnprintf(msg, 2048, string, ap);
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va_end(ap);
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if(!graph && !lg)
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{
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printf("%s",msg);
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fflush(NULL);
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}
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if(!graph && lg)
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{
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fprintf(logd,"%s\n",msg);
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printf("%s",msg);
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fflush(NULL);
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}
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#ifdef HAVE_LIBNCURSES
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if(graph && lg)
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{
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fprintf(logd,"%s",msg);
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ng_print(wins,y,x,msg);
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}
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if(graph && !lg)
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ng_print(wins,y,x,msg);
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#endif
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}
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