/* Copyright (c) 1999 - 2005 NetGroup, Politecnico di Torino (Italy) * Copyright (c) 2005 - 2006 CACE Technologies, Davis (California) * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the Politecnico di Torino, CACE Technologies * nor the names of its contributors may be used to endorse or promote * products derived from this software without specific prior written * permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * */
#include <stdlib.h> #include <stdio.h>
// // NOTE: remember to include WPCAP and HAVE_REMOTE among your // preprocessor definitions. //
#include <pcap.h>
#define LINE_LEN 16
int main(int argc, char **argv) { pcap_if_t *alldevs, *d; pcap_t *fp; u_int inum, i=0; char errbuf[PCAP_ERRBUF_SIZE]; int res; struct pcap_pkthdr *header; const u_char *pkt_data;
printf("pktdump_ex: prints the packets of the network using WinPcap.\n"); printf(" Usage: pktdump_ex [-s source]\n\n" " Examples:\n" " pktdump_ex -s file://c:/temp/file.acp\n" " pktdump_ex -s rpcap://\\Device\\NPF_{C8736017-F3C3-4373-94AC-9A34B7DAD998}\n\n");
if(argc < 3) {
printf("\nNo adapter selected: printing the device list:\n"); /* The user didn't provide a packet source: Retrieve the local device list */ if (pcap_findalldevs_ex(PCAP_SRC_IF_STRING, NULL, &alldevs, errbuf) == -1) { fprintf(stderr,"Error in pcap_findalldevs_ex: %s\n", errbuf); return -1; } /* Print the list */ for(d=alldevs; d; d=d->next) { printf("%d. %s\n ", ++i, d->name);
if (d->description) printf(" (%s)\n", d->description); else printf(" (No description available)\n"); } if (i==0) { fprintf(stderr,"No interfaces found! Exiting.\n"); return -1; } printf("Enter the interface number (1-%d):",i); scanf_s("%d", &inum); if (inum < 1 || inum > i) { printf("\nInterface number out of range.\n");
/* Free the device list */ pcap_freealldevs(alldevs); return -1; } /* Jump to the selected adapter */ for (d=alldevs, i=0; i< inum-1 ;d=d->next, i++); /* Open the device */ if ( (fp= pcap_open(d->name, 100 /*snaplen*/, PCAP_OPENFLAG_PROMISCUOUS /*flags*/, 20 /*read timeout*/, NULL /* remote authentication */, errbuf) ) == NULL) { fprintf(stderr,"\nError opening adapter\n"); return -1; } } else { // Do not check for the switch type ('-s') if ( (fp= pcap_open(argv[2], 100 /*snaplen*/, PCAP_OPENFLAG_PROMISCUOUS /*flags*/, 20 /*read timeout*/, NULL /* remote authentication */, errbuf) ) == NULL) { fprintf(stderr,"\nError opening source: %s\n", errbuf); return -1; } }
/* Read the packets */ while((res = pcap_next_ex( fp, &header, &pkt_data)) >= 0) {
if(res == 0) /* Timeout elapsed */ continue;
/* print pkt timestamp and pkt len */ printf("%ld:%ld (%ld)\n", header->ts.tv_sec, header->ts.tv_usec, header->len); /* Print the packet */ for (i=1; (i < header->caplen + 1 ) ; i++) { printf("%.2x ", pkt_data[i-1]); if ( (i % LINE_LEN) == 0) printf("\n"); } printf("\n\n"); }
if(res == -1) { fprintf(stderr, "Error reading the packets: %s\n", pcap_geterr(fp)); return -1; }
return 0; } |
