1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
|
/* This file is part of Jumper
Copyright (C) 1999-2005,2008,2013,2017 Sergey Poznyakoff
Jumper 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 3, or (at your option)
any later version.
Jumper 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 Jumper. If not, see <http://www.gnu.org/licenses/>.
*/
#include "jumper.h"
void
cons_ether_packet(u_char *user, const struct pcap_pkthdr *h, const u_char *p)
{
struct ether_header ep;
u_short ether_type;
int caplen = h->caplen;
int length = h->len;
if (p && caplen > 0) {
if (caplen < sizeof(ep)) {
diag(LOG_WARNING,
"caplen < sizeof(struct ether_header): caplen = %d, length = %d", caplen, length);
return;
}
memcpy(&ep, p, sizeof(ep));
if ((ether_type = ntohs(ep.ether_type))) {
length -= sizeof(struct ether_header);
switch (ether_type) {
case ETHERTYPE_IP:
ip_handler((struct ip*)(p + sizeof(ep)),
length);
break;
default:
break;
}
}
}
}
|