projects / dragonfly.git / blame
| Commit | Line | Data |
|---|---|---|
| 984263bc MD |
1 | /* |
| 2 | * Copyright (C) 1993-2001 by Darren Reed. | |
| 3 | * | |
| 4 | * See the IPFILTER.LICENCE file for details on licencing. | |
| 5 | */ | |
| 6 | ||
| 7 | /* | |
| 8 | tcpdump -n | |
| 9 | ||
| 10 | 00:05:47.816843 128.231.76.76.3291 > 224.2.252.231.36573: udp 36 (encap) | |
| 11 | ||
| 12 | tcpdump -nq | |
| 13 | ||
| 14 | 00:33:48.410771 192.73.213.11.1463 > 224.2.248.153.59360: udp 31 (encap) | |
| 15 | ||
| 16 | tcpdump -nqt | |
| 17 | ||
| 18 | 128.250.133.13.23 > 128.250.20.20.2419: tcp 27 | |
| 19 | ||
| 20 | tcpdump -nqtt | |
| 21 | ||
| 22 | 123456789.1234567 128.250.133.13.23 > 128.250.20.20.2419: tcp 27 | |
| 23 | ||
| 24 | tcpdump -nqte | |
| 25 | ||
| 26 | 8:0:20: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) | |
| 63 | static const char sccsid[] = "@(#)ipft_td.c 1.8 2/4/96 (C)1995 Darren Reed"; | |
| 91865926 | 64 | static const char rcsid[] = "@(#)$Id: ipft_td.c,v 2.2.2.6 2003/05/31 02:13:04 darrenr Exp $"; |
| 984263bc MD |
65 | #endif |
| 66 | ||
| 67 | static int tcpd_open __P((char *)); | |
| 68 | static int tcpd_close __P((void)); | |
| 69 | static int tcpd_readip __P((char *, int, char **, int *)); | |
| 70 | static int count_dots __P((char *)); | |
| 71 | ||
| 72 | struct ipread tcpd = { tcpd_open, tcpd_close, tcpd_readip }; | |
| 73 | ||
| 74 | static FILE *tfp = NULL; | |
| 75 | static int tfd = -1; | |
| 76 | ||
| 77 | ||
| 78 | static int tcpd_open(fname) | |
| 79 | char *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 | ||
| 95 | static int tcpd_close() | |
| 96 | { | |
| 97 | (void) fclose(tfp); | |
| 98 | return close(tfd); | |
| 99 | } | |
| 100 | ||
| 101 | ||
| 102 | static int count_dots(str) | |
| 103 | char *str; | |
| 104 | { | |
| 105 | int i = 0; | |
| 106 | ||
| 107 | while (*str) | |
| 108 | if (*str++ == '.') | |
| 109 | i++; | |
| 110 | return i; | |
| 111 | } | |
| 112 | ||
| 113 | ||
| 114 | static int tcpd_readip(buf, cnt, ifn, dir) | |
| 115 | char *buf, **ifn; | |
| 116 | int 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 | ||
| 91865926 HP |
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) { |
| 91865926 HP |
139 | n = sscanf(lbuf, |
| 140 | "%31s %31s %31s: %31s > %31s: %255s", | |
| 984263bc MD |
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); |
| 984263bc MD |
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 | } |