mirror of
https://github.com/open-sdr/openwifi.git
synced 2024-12-19 13:48:24 +00:00
139 lines
3.7 KiB
C
139 lines
3.7 KiB
C
|
|
// (c)2020 Michael Tetemke Mehari <michael.mehari@ugent.be>
|
|
|
|
/*
|
|
* 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; version 2.
|
|
*
|
|
* 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.,
|
|
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
*/
|
|
|
|
#include "inject_80211.h"
|
|
#include "radiotap.h"
|
|
#include "uthash.h"
|
|
|
|
#define HEADERLEN_80211 24
|
|
|
|
struct RECORD_t
|
|
{
|
|
char id[16]; // hw_mode-rate-sgi_flag-packet_size
|
|
uint16_t pkt_cnt; // number of packets received
|
|
uint64_t ts_begin; // beginning timestamp
|
|
uint64_t ts_end; // ending timestamp
|
|
|
|
UT_hash_handle hh; // hash function handler
|
|
};
|
|
|
|
/* 802.11n bitrates x 2 */
|
|
static const uint8_t rates_11n[] = {13, 26, 39, 52, 78, 104, 117, 130};
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
struct pcap_pkthdr pcap_hdr;
|
|
const u_char *packet;
|
|
char hw_mode, id[16];
|
|
int rate, sgi_flag, packet_size;
|
|
|
|
int n, hdr_len;
|
|
struct ieee80211_radiotap_iterator rti;
|
|
|
|
struct RECORD_t *RECORD_ptr, *tmp_ptr, *hash_ptr = NULL;
|
|
|
|
if (argc < 2)
|
|
{
|
|
fprintf(stderr, "Usage: %s <pcap>\n", argv[0]);
|
|
exit(1);
|
|
}
|
|
|
|
pcap_t *handle;
|
|
char errbuf[PCAP_ERRBUF_SIZE];
|
|
handle = pcap_open_offline(argv[1], errbuf);
|
|
|
|
if (handle == NULL)
|
|
{
|
|
fprintf(stderr,"Couldn't open pcap file %s: %s\n", argv[1], errbuf);
|
|
return(2);
|
|
}
|
|
|
|
while ((packet = pcap_next(handle, &pcap_hdr)))
|
|
{
|
|
hdr_len = (packet[2] + (packet[3] << 8));
|
|
if (pcap_hdr.len < (hdr_len + HEADERLEN_80211))
|
|
continue;
|
|
|
|
packet_size = pcap_hdr.len - (hdr_len + HEADERLEN_80211);
|
|
if (packet_size < 0)
|
|
continue;
|
|
|
|
if (ieee80211_radiotap_iterator_init(&rti, (struct ieee80211_radiotap_header *)packet, packet_size) < 0)
|
|
continue;
|
|
|
|
while ((n = ieee80211_radiotap_iterator_next(&rti)) == 0)
|
|
{
|
|
switch (rti.this_arg_index)
|
|
{
|
|
case IEEE80211_RADIOTAP_RATE:
|
|
rate = (rti.this_arg)[0];
|
|
sgi_flag = 0;
|
|
hw_mode = 'a';
|
|
break;
|
|
|
|
case IEEE80211_RADIOTAP_MCS:
|
|
rate = rates_11n[((rti.this_arg)[2])];
|
|
sgi_flag = (rti.this_arg)[1] & 0x40;
|
|
hw_mode = 'n';
|
|
break;
|
|
}
|
|
}
|
|
|
|
// create hash table index
|
|
sprintf(id, "%c-%d-%d-%d", hw_mode, rate, sgi_flag, packet_size);
|
|
|
|
// Hash table implementation for c : https://github.com/troydhanson/uthash
|
|
HASH_FIND_STR(hash_ptr, id, RECORD_ptr);
|
|
if(RECORD_ptr == NULL)
|
|
{
|
|
RECORD_ptr = (struct RECORD_t*)malloc(sizeof(struct RECORD_t));
|
|
if(RECORD_ptr == NULL)
|
|
{
|
|
fprintf(stderr, "Unable to create record!\n");
|
|
return 1;
|
|
}
|
|
|
|
strcpy(RECORD_ptr->id, id);
|
|
RECORD_ptr->pkt_cnt = 1;
|
|
RECORD_ptr->ts_begin = 1e6*pcap_hdr.ts.tv_sec + pcap_hdr.ts.tv_usec;
|
|
|
|
// Add the new record to the hash table
|
|
HASH_ADD_STR(hash_ptr, id, RECORD_ptr);
|
|
}
|
|
else
|
|
{
|
|
RECORD_ptr->pkt_cnt++;
|
|
RECORD_ptr->ts_end = 1e6*pcap_hdr.ts.tv_sec + pcap_hdr.ts.tv_usec;
|
|
}
|
|
}
|
|
pcap_close(handle);
|
|
|
|
|
|
// Iterate through the hash table
|
|
printf("HW MODE\tRATE(Mbps)\tSGI\tSIZE(bytes)\tCOUNT\tDELAY(sec)\n");
|
|
printf("=======\t==========\t===\t===========\t=====\t=========\n");
|
|
HASH_ITER(hh, hash_ptr, RECORD_ptr, tmp_ptr)
|
|
{
|
|
sscanf(RECORD_ptr->id, "%c-%d-%d-%d", &hw_mode, &rate, &sgi_flag, &packet_size);
|
|
printf("802.11%c\t%.1f\t\t%s\t%d\t\t%d\t%.5f\n", hw_mode, rate/2.0, (sgi_flag == 0 ? "OFF" : "ON"), packet_size, RECORD_ptr->pkt_cnt, 1e-6*(RECORD_ptr->ts_end - RECORD_ptr->ts_begin));
|
|
}
|
|
fflush(stdout);
|
|
|
|
return 0;
|
|
}
|