Fix miscellanious size_t related compiler warnings.
[dragonfly.git] / contrib / ipfilter / ipft_td.c
CommitLineData
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1/*
2 * Copyright (C) 1993-2001 by Darren Reed.
3 *
4 * See the IPFILTER.LICENCE file for details on licencing.
5 */
6
7/*
8tcpdump -n
9
1000:05:47.816843 128.231.76.76.3291 > 224.2.252.231.36573: udp 36 (encap)
11
12tcpdump -nq
13
1400:33:48.410771 192.73.213.11.1463 > 224.2.248.153.59360: udp 31 (encap)
15
16tcpdump -nqt
17
18128.250.133.13.23 > 128.250.20.20.2419: tcp 27
19
20tcpdump -nqtt
21
22123456789.1234567 128.250.133.13.23 > 128.250.20.20.2419: tcp 27
23
24tcpdump -nqte
25
268:0:20:f:65:f7 0:0:c:1:8a:c5 81: 128.250.133.13.23 > 128.250.20.20.2419: tcp 27
27
28*/
29#if defined(__sgi) && (IRIX > 602)
30# include <sys/ptimers.h>
31#endif
32#include <stdio.h>
33#include <string.h>
34#if !defined(__SVR4) && !defined(__GNUC__)
35#include <strings.h>
36#endif
37#include <sys/types.h>
38#include <sys/param.h>
39#include <sys/time.h>
40#include <stdlib.h>
41#include <unistd.h>
42#include <stddef.h>
43#include <sys/socket.h>
44#include <sys/ioctl.h>
45#include <netinet/in.h>
46#include <arpa/inet.h>
47#include <netinet/in_systm.h>
48#ifndef linux
49#include <netinet/ip_var.h>
50#endif
51#include <netinet/ip.h>
52#include <netinet/tcp.h>
53#include <netinet/udp.h>
54#include <netinet/ip_icmp.h>
55#include <net/if.h>
56#include <netdb.h>
57#include "ip_compat.h"
58#include <netinet/tcpip.h>
59#include "ipf.h"
60#include "ipt.h"
61
62#if !defined(lint)
63static const char sccsid[] = "@(#)ipft_td.c 1.8 2/4/96 (C)1995 Darren Reed";
91865926 64static const char rcsid[] = "@(#)$Id: ipft_td.c,v 2.2.2.6 2003/05/31 02:13:04 darrenr Exp $";
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65#endif
66
67static int tcpd_open __P((char *));
68static int tcpd_close __P((void));
69static int tcpd_readip __P((char *, int, char **, int *));
70static int count_dots __P((char *));
71
72struct ipread tcpd = { tcpd_open, tcpd_close, tcpd_readip };
73
74static FILE *tfp = NULL;
75static int tfd = -1;
76
77
78static int tcpd_open(fname)
79char *fname;
80{
81 if (tfd != -1)
82 return tfd;
83
84 if (!strcmp(fname, "-")) {
85 tfd = 0;
86 tfp = stdin;
87 } else {
88 tfd = open(fname, O_RDONLY);
89 tfp = fdopen(tfd, "r");
90 }
91 return tfd;
92}
93
94
95static int tcpd_close()
96{
97 (void) fclose(tfp);
98 return close(tfd);
99}
100
101
102static int count_dots(str)
103char *str;
104{
105 int i = 0;
106
107 while (*str)
108 if (*str++ == '.')
109 i++;
110 return i;
111}
112
113
114static int tcpd_readip(buf, cnt, ifn, dir)
115char *buf, **ifn;
116int cnt, *dir;
117{
118 struct tcpiphdr pkt;
119 ip_t *ip = (ip_t *)&pkt;
120 struct protoent *p;
121 char src[32], dst[32], misc[256], time[32], link1[32], link2[32];
122 char lbuf[160], *s;
123 int n, slen, extra = 0;
124
125 if (!fgets(lbuf, sizeof(lbuf) - 1, tfp))
126 return 0;
127
128 if ((s = strchr(lbuf, '\n')))
129 *s = '\0';
130 lbuf[sizeof(lbuf)-1] = '\0';
131
132 bzero(&pkt, sizeof(pkt));
133
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134 if ((n = sscanf(lbuf, "%31s > %31s: %255s", src, dst, misc)) != 3)
135 if ((n = sscanf(lbuf, "%31s %31s > %31s: %255s",
984263bc 136 time, src, dst, misc)) != 4)
91865926 137 if ((n = sscanf(lbuf, "%31s %31s: %31s > %31s: %255s",
984263bc 138 link1, link2, src, dst, misc)) != 5) {
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139 n = sscanf(lbuf,
140 "%31s %31s %31s: %31s > %31s: %255s",
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141 time, link1, link2, src, dst, misc);
142 if (n != 6)
143 return -1;
144 }
145
146 if (count_dots(dst) == 4) {
147 s = strrchr(src, '.');
148 *s++ = '\0';
149 (void) inet_aton(src, &ip->ip_src);
150 pkt.ti_sport = htons(atoi(s));
151 *--s = '.';
152 s = strrchr(dst, '.');
153
154 *s++ = '\0';
155 (void) inet_aton(src, &ip->ip_dst);
156 pkt.ti_dport = htons(atoi(s));
157 *--s = '.';
158
159 } else {
160 (void) inet_aton(src, &ip->ip_src);
161 (void) inet_aton(src, &ip->ip_dst);
162 }
424e8382 163 ip->ip_len = ip->ip_hl = (unsigned)sizeof(ip_t);
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164
165 s = strtok(misc, " :");
166 if ((p = getprotobyname(s))) {
167 ip->ip_p = p->p_proto;
168
169 switch (p->p_proto) {
170 case IPPROTO_TCP :
171 case IPPROTO_UDP :
172 s = strtok(NULL, " :");
173 ip->ip_len += atoi(s);
174 if (p->p_proto == IPPROTO_TCP)
175 extra = sizeof(struct tcphdr);
176 else if (p->p_proto == IPPROTO_UDP)
177 extra = sizeof(struct udphdr);
178 break;
179#ifdef IGMP
180 case IPPROTO_IGMP :
181 extra = sizeof(struct igmp);
182 break;
183#endif
184 case IPPROTO_ICMP :
185 extra = sizeof(struct icmp);
186 break;
187 default :
188 break;
189 }
190 }
191 slen = ip->ip_hl + extra + ip->ip_len;
192 return slen;
193}