mirror of
https://github.com/vanhoefm/fragattacks.git
synced 2024-11-25 16:58:41 -05:00
ef00c78097
The use of the pcap subdirectory seems to be limited to some of the newer Linux distros only, so use the older paths to pcap.h and pcap-bpf.h to make wlantest bit more easier to compile on older systems.
151 lines
3.5 KiB
C
151 lines
3.5 KiB
C
/*
|
|
* PCAP capture file reader
|
|
* Copyright (c) 2010, Jouni Malinen <j@w1.fi>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* Alternatively, this software may be distributed under the terms of BSD
|
|
* license.
|
|
*
|
|
* See README and COPYING for more details.
|
|
*/
|
|
|
|
#include "utils/includes.h"
|
|
#include <pcap.h>
|
|
|
|
#include "utils/common.h"
|
|
#include "wlantest.h"
|
|
|
|
|
|
int read_cap_file(struct wlantest *wt, const char *fname)
|
|
{
|
|
char errbuf[PCAP_ERRBUF_SIZE];
|
|
pcap_t *pcap;
|
|
unsigned int count = 0;
|
|
struct pcap_pkthdr *hdr;
|
|
const u_char *data;
|
|
int res;
|
|
int dlt;
|
|
|
|
pcap = pcap_open_offline(fname, errbuf);
|
|
if (pcap == NULL) {
|
|
wpa_printf(MSG_ERROR, "Failed to read pcap file '%s': %s",
|
|
fname, errbuf);
|
|
return -1;
|
|
}
|
|
dlt = pcap_datalink(pcap);
|
|
if (dlt != DLT_IEEE802_11_RADIO && dlt != DLT_PRISM_HEADER &&
|
|
dlt != DLT_IEEE802_11) {
|
|
wpa_printf(MSG_ERROR, "Unsupported pcap datalink type: %d",
|
|
dlt);
|
|
pcap_close(pcap);
|
|
return -1;
|
|
}
|
|
wpa_printf(MSG_DEBUG, "pcap datalink type: %d", dlt);
|
|
|
|
for (;;) {
|
|
res = pcap_next_ex(pcap, &hdr, &data);
|
|
if (res == -2)
|
|
break; /* No more packets */
|
|
if (res == -1) {
|
|
wpa_printf(MSG_INFO, "pcap_next_ex failure: %s",
|
|
pcap_geterr(pcap));
|
|
break;
|
|
}
|
|
if (res != 1) {
|
|
wpa_printf(MSG_INFO, "Unexpected pcap_next_ex return "
|
|
"value %d", res);
|
|
break;
|
|
}
|
|
|
|
/* Packet was read without problems */
|
|
wpa_printf(MSG_EXCESSIVE, "pcap hdr: ts=%d.%06d "
|
|
"len=%u/%u",
|
|
(int) hdr->ts.tv_sec, (int) hdr->ts.tv_usec,
|
|
hdr->caplen, hdr->len);
|
|
if (wt->write_pcap_dumper) {
|
|
wt->write_pcap_time = hdr->ts;
|
|
pcap_dump(wt->write_pcap_dumper, hdr, data);
|
|
}
|
|
if (hdr->caplen < hdr->len) {
|
|
wpa_printf(MSG_DEBUG, "pcap: Dropped incomplete frame "
|
|
"(%u/%u captured)",
|
|
hdr->caplen, hdr->len);
|
|
continue;
|
|
}
|
|
count++;
|
|
switch (dlt) {
|
|
case DLT_IEEE802_11_RADIO:
|
|
wlantest_process(wt, data, hdr->caplen);
|
|
break;
|
|
case DLT_PRISM_HEADER:
|
|
wlantest_process_prism(wt, data, hdr->caplen);
|
|
break;
|
|
case DLT_IEEE802_11:
|
|
wlantest_process_80211(wt, data, hdr->caplen);
|
|
}
|
|
}
|
|
|
|
pcap_close(pcap);
|
|
|
|
wpa_printf(MSG_DEBUG, "Read %s: %u packets", fname, count);
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
int read_wired_cap_file(struct wlantest *wt, const char *fname)
|
|
{
|
|
char errbuf[PCAP_ERRBUF_SIZE];
|
|
pcap_t *pcap;
|
|
unsigned int count = 0;
|
|
struct pcap_pkthdr *hdr;
|
|
const u_char *data;
|
|
int res;
|
|
|
|
pcap = pcap_open_offline(fname, errbuf);
|
|
if (pcap == NULL) {
|
|
wpa_printf(MSG_ERROR, "Failed to read pcap file '%s': %s",
|
|
fname, errbuf);
|
|
return -1;
|
|
}
|
|
|
|
for (;;) {
|
|
res = pcap_next_ex(pcap, &hdr, &data);
|
|
if (res == -2)
|
|
break; /* No more packets */
|
|
if (res == -1) {
|
|
wpa_printf(MSG_INFO, "pcap_next_ex failure: %s",
|
|
pcap_geterr(pcap));
|
|
break;
|
|
}
|
|
if (res != 1) {
|
|
wpa_printf(MSG_INFO, "Unexpected pcap_next_ex return "
|
|
"value %d", res);
|
|
break;
|
|
}
|
|
|
|
/* Packet was read without problems */
|
|
wpa_printf(MSG_EXCESSIVE, "pcap hdr: ts=%d.%06d "
|
|
"len=%u/%u",
|
|
(int) hdr->ts.tv_sec, (int) hdr->ts.tv_usec,
|
|
hdr->caplen, hdr->len);
|
|
if (hdr->caplen < hdr->len) {
|
|
wpa_printf(MSG_DEBUG, "pcap: Dropped incomplete frame "
|
|
"(%u/%u captured)",
|
|
hdr->caplen, hdr->len);
|
|
continue;
|
|
}
|
|
count++;
|
|
wlantest_process_wired(wt, data, hdr->caplen);
|
|
}
|
|
|
|
pcap_close(pcap);
|
|
|
|
wpa_printf(MSG_DEBUG, "Read %s: %u packets", fname, count);
|
|
|
|
return 0;
|
|
}
|