1*f3ac6781SToomas Soome /*
2*f3ac6781SToomas Soome * Copyright (C) 1993-2001 by Darren Reed.
3*f3ac6781SToomas Soome *
4*f3ac6781SToomas Soome * See the IPFILTER.LICENCE file for details on licencing.
5*f3ac6781SToomas Soome *
6*f3ac6781SToomas Soome * $Id: printpacket.c,v 1.12.4.1 2005/02/21 05:09:24 darrenr Exp $
7*f3ac6781SToomas Soome */
8*f3ac6781SToomas Soome
9*f3ac6781SToomas Soome #include "ipf.h"
10*f3ac6781SToomas Soome
11*f3ac6781SToomas Soome #ifndef IP_OFFMASK
12*f3ac6781SToomas Soome # define IP_OFFMASK 0x3fff
13*f3ac6781SToomas Soome #endif
14*f3ac6781SToomas Soome
15*f3ac6781SToomas Soome
printpacket(ip)16*f3ac6781SToomas Soome void printpacket(ip)
17*f3ac6781SToomas Soome struct ip *ip;
18*f3ac6781SToomas Soome {
19*f3ac6781SToomas Soome struct tcphdr *tcp;
20*f3ac6781SToomas Soome u_short len;
21*f3ac6781SToomas Soome u_short off;
22*f3ac6781SToomas Soome
23*f3ac6781SToomas Soome if (IP_V(ip) == 6) {
24*f3ac6781SToomas Soome off = 0;
25*f3ac6781SToomas Soome len = ntohs(((u_short *)ip)[2]) + 40;
26*f3ac6781SToomas Soome } else {
27*f3ac6781SToomas Soome off = ntohs(ip->ip_off);
28*f3ac6781SToomas Soome len = ntohs(ip->ip_len);
29*f3ac6781SToomas Soome }
30*f3ac6781SToomas Soome
31*f3ac6781SToomas Soome if ((opts & OPT_HEX) == OPT_HEX) {
32*f3ac6781SToomas Soome u_char *s;
33*f3ac6781SToomas Soome int i;
34*f3ac6781SToomas Soome
35*f3ac6781SToomas Soome for (s = (u_char *)ip, i = 0; i < len; i++) {
36*f3ac6781SToomas Soome printf("%02x", *s++ & 0xff);
37*f3ac6781SToomas Soome if (len - i > 1) {
38*f3ac6781SToomas Soome i++;
39*f3ac6781SToomas Soome printf("%02x", *s++ & 0xff);
40*f3ac6781SToomas Soome }
41*f3ac6781SToomas Soome putchar(' ');
42*f3ac6781SToomas Soome }
43*f3ac6781SToomas Soome putchar('\n');
44*f3ac6781SToomas Soome return;
45*f3ac6781SToomas Soome }
46*f3ac6781SToomas Soome
47*f3ac6781SToomas Soome if (IP_V(ip) == 6) {
48*f3ac6781SToomas Soome printpacket6(ip);
49*f3ac6781SToomas Soome return;
50*f3ac6781SToomas Soome }
51*f3ac6781SToomas Soome
52*f3ac6781SToomas Soome tcp = (struct tcphdr *)((char *)ip + (IP_HL(ip) << 2));
53*f3ac6781SToomas Soome printf("ip %d(%d) %d", ntohs(ip->ip_len), IP_HL(ip) << 2, ip->ip_p);
54*f3ac6781SToomas Soome if (off & IP_OFFMASK)
55*f3ac6781SToomas Soome printf(" @%d", off << 3);
56*f3ac6781SToomas Soome printf(" %s", inet_ntoa(ip->ip_src));
57*f3ac6781SToomas Soome if (!(off & IP_OFFMASK))
58*f3ac6781SToomas Soome if (ip->ip_p == IPPROTO_TCP || ip->ip_p == IPPROTO_UDP)
59*f3ac6781SToomas Soome printf(",%d", ntohs(tcp->th_sport));
60*f3ac6781SToomas Soome printf(" > ");
61*f3ac6781SToomas Soome printf("%s", inet_ntoa(ip->ip_dst));
62*f3ac6781SToomas Soome if (!(off & IP_OFFMASK)) {
63*f3ac6781SToomas Soome if (ip->ip_p == IPPROTO_TCP || ip->ip_p == IPPROTO_UDP)
64*f3ac6781SToomas Soome printf(",%d", ntohs(tcp->th_dport));
65*f3ac6781SToomas Soome if ((ip->ip_p == IPPROTO_TCP) && (tcp->th_flags != 0)) {
66*f3ac6781SToomas Soome putchar(' ');
67*f3ac6781SToomas Soome if (tcp->th_flags & TH_FIN)
68*f3ac6781SToomas Soome putchar('F');
69*f3ac6781SToomas Soome if (tcp->th_flags & TH_SYN)
70*f3ac6781SToomas Soome putchar('S');
71*f3ac6781SToomas Soome if (tcp->th_flags & TH_RST)
72*f3ac6781SToomas Soome putchar('R');
73*f3ac6781SToomas Soome if (tcp->th_flags & TH_PUSH)
74*f3ac6781SToomas Soome putchar('P');
75*f3ac6781SToomas Soome if (tcp->th_flags & TH_ACK)
76*f3ac6781SToomas Soome putchar('A');
77*f3ac6781SToomas Soome if (tcp->th_flags & TH_URG)
78*f3ac6781SToomas Soome putchar('U');
79*f3ac6781SToomas Soome if (tcp->th_flags & TH_ECN)
80*f3ac6781SToomas Soome putchar('E');
81*f3ac6781SToomas Soome if (tcp->th_flags & TH_CWR)
82*f3ac6781SToomas Soome putchar('C');
83*f3ac6781SToomas Soome }
84*f3ac6781SToomas Soome }
85*f3ac6781SToomas Soome
86*f3ac6781SToomas Soome putchar('\n');
87*f3ac6781SToomas Soome }
88