1 /* 2 * Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that: (1) source code distributions 7 * retain the above copyright notice and this paragraph in its entirety, (2) 8 * distributions including binary code include the above copyright notice and 9 * this paragraph in its entirety in the documentation or other materials 10 * provided with the distribution, and (3) all advertising materials mentioning 11 * features or use of this software display the following acknowledgement: 12 * ``This product includes software developed by the University of California, 13 * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of 14 * the University nor the names of its contributors may be used to endorse 15 * or promote products derived from this software without specific prior 16 * written permission. 17 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED 18 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF 19 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. 20 * 21 * @(#) $Header: /tcpdump/master/tcpdump/interface.h,v 1.149 2001/01/02 22:47:06 guy Exp $ (LBL) 22 * $FreeBSD$ 23 */ 24 25 #ifndef tcpdump_interface_h 26 #define tcpdump_interface_h 27 28 #ifdef HAVE_OS_PROTO_H 29 #include "os-proto.h" 30 #endif 31 #include <sys/types.h> 32 #include <sys/time.h> 33 34 #ifndef HAVE___ATTRIBUTE__ 35 #define __attribute__(x) 36 #endif 37 38 /* snprintf et al */ 39 40 #include <stdarg.h> 41 42 #if !defined(HAVE_SNPRINTF) 43 int snprintf (char *str, size_t sz, const char *format, ...) 44 __attribute__ ((format (printf, 3, 4))); 45 #endif 46 47 #if !defined(HAVE_VSNPRINTF) 48 int vsnprintf (char *str, size_t sz, const char *format, va_list ap) 49 __attribute__((format (printf, 3, 0))); 50 #endif 51 52 #ifndef HAVE_STRLCAT 53 extern size_t strlcat (char *, const char *, size_t); 54 #endif 55 #ifndef HAVE_STRLCPY 56 extern size_t strlcpy (char *, const char *, size_t); 57 #endif 58 59 struct tok { 60 int v; /* value */ 61 char *s; /* string */ 62 }; 63 64 extern int aflag; /* translate network and broadcast addresses */ 65 extern int dflag; /* print filter code */ 66 extern int eflag; /* print ethernet header */ 67 extern int fflag; /* don't translate "foreign" IP address */ 68 extern int nflag; /* leave addresses as numbers */ 69 extern int Nflag; /* remove domains from printed host names */ 70 extern int qflag; /* quick (shorter) output */ 71 extern int Rflag; /* print sequence # field in AH/ESP*/ 72 extern int sflag; /* use the libsmi to translate OIDs */ 73 extern int Sflag; /* print raw TCP sequence numbers */ 74 extern int tflag; /* print packet arrival time */ 75 extern int uflag; /* Print undecoded NFS handles */ 76 extern int vflag; /* verbose */ 77 extern int xflag; /* print packet in hex */ 78 extern int Xflag; /* print packet in hex/ascii */ 79 80 extern char *espsecret; 81 82 extern int packettype; /* as specified by -T */ 83 #define PT_VAT 1 /* Visual Audio Tool */ 84 #define PT_WB 2 /* distributed White Board */ 85 #define PT_RPC 3 /* Remote Procedure Call */ 86 #define PT_RTP 4 /* Real-Time Applications protocol */ 87 #define PT_RTCP 5 /* Real-Time Applications control protocol */ 88 #define PT_SNMP 6 /* Simple Network Management Protocol */ 89 #define PT_CNFP 7 /* Cisco NetFlow protocol */ 90 91 #ifndef min 92 #define min(a,b) ((a)>(b)?(b):(a)) 93 #endif 94 #ifndef max 95 #define max(a,b) ((b)>(a)?(b):(a)) 96 #endif 97 98 #ifndef INET6 99 /* 100 * The default snapshot length. This value allows most printers to print 101 * useful information while keeping the amount of unwanted data down. 102 * In particular, it allows for an ethernet header, tcp/ip header, and 103 * 14 bytes of data (assuming no ip options). 104 */ 105 #define DEFAULT_SNAPLEN 68 106 #else 107 #define DEFAULT_SNAPLEN 96 108 #endif 109 110 #ifndef BIG_ENDIAN 111 #define BIG_ENDIAN 4321 112 #define LITTLE_ENDIAN 1234 113 #endif 114 115 #define ESRC(ep) ((ep)->ether_shost) 116 #define EDST(ep) ((ep)->ether_dhost) 117 118 #ifndef NTOHL 119 #define NTOHL(x) (x) = ntohl(x) 120 #define NTOHS(x) (x) = ntohs(x) 121 #define HTONL(x) (x) = htonl(x) 122 #define HTONS(x) (x) = htons(x) 123 #endif 124 #endif 125 126 extern char *program_name; /* used to generate self-identifying messages */ 127 128 extern int32_t thiszone; /* seconds offset from gmt to local time */ 129 130 extern int snaplen; 131 /* global pointers to beginning and end of current packet (during printing) */ 132 extern const u_char *packetp; 133 extern const u_char *snapend; 134 135 /* 136 * True if "l" bytes of "var" were captured. 137 * 138 * The "snapend - (l) <= snapend" checks to make sure "l" isn't so large 139 * that "snapend - (l)" underflows. 140 * 141 * The check is for <= rather than < because "l" might be 0. 142 */ 143 #define TTEST2(var, l) (snapend - (l) <= snapend && \ 144 (const u_char *)&(var) <= snapend - (l)) 145 146 /* True if "var" was captured */ 147 #define TTEST(var) TTEST2(var, sizeof(var)) 148 149 /* Bail if "l" bytes of "var" were not captured */ 150 #define TCHECK2(var, l) if (!TTEST2(var, l)) goto trunc 151 152 /* Bail if "var" was not captured */ 153 #define TCHECK(var) TCHECK2(var, sizeof(var)) 154 155 struct timeval; 156 157 extern void ts_print(const struct timeval *); 158 extern void relts_print(int); 159 160 extern int fn_print(const u_char *, const u_char *); 161 extern int fn_printn(const u_char *, u_int, const u_char *); 162 extern const char *tok2str(const struct tok *, const char *, int); 163 extern char *dnaddr_string(u_short); 164 165 extern void wrapup(int); 166 167 extern void error(const char *, ...) 168 __attribute__((noreturn, format (printf, 1, 2))); 169 extern void warning(const char *, ...) __attribute__ ((format (printf, 1, 2))); 170 171 extern char *read_infile(char *); 172 extern char *copy_argv(char **); 173 174 extern void safeputchar(int); 175 extern void safeputs(const char *); 176 177 extern char *isonsap_string(const u_char *); 178 extern char *llcsap_string(u_char); 179 extern char *protoid_string(const u_char *); 180 extern char *dnname_string(u_short); 181 extern char *dnnum_string(u_short); 182 183 /* The printer routines. */ 184 185 struct pcap_pkthdr; 186 187 extern void ascii_print_with_offset(const u_char *, u_int, u_int); 188 extern void ascii_print(const u_char *, u_int); 189 extern void hex_print_with_offset(const u_char *, u_int, u_int); 190 extern void telnet_print(const u_char *, u_int); 191 extern void hex_print(const u_char *, u_int); 192 extern int ether_encap_print(u_short, const u_char *, u_int, u_int, u_short *); 193 extern int llc_print(const u_char *, u_int, u_int, const u_char *, 194 const u_char *, u_short *); 195 extern void aarp_print(const u_char *, u_int); 196 extern void arp_print(const u_char *, u_int, u_int); 197 extern void atalk_print(const u_char *, u_int); 198 extern void atm_if_print(u_char *, const struct pcap_pkthdr *, const u_char *); 199 extern void bootp_print(const u_char *, u_int, u_short, u_short); 200 extern void bgp_print(const u_char *, int); 201 extern void bxxp_print(const u_char *, u_int); 202 extern void cnfp_print(const u_char *cp, u_int len, const u_char *bp); 203 extern void decnet_print(const u_char *, u_int, u_int); 204 extern void default_print(const u_char *, u_int); 205 extern void default_print_unaligned(const u_char *, u_int); 206 extern void dvmrp_print(const u_char *, u_int); 207 extern void egp_print(const u_char *, u_int, const u_char *); 208 extern void ether_if_print(u_char *, const struct pcap_pkthdr *, 209 const u_char *); 210 extern void token_if_print(u_char *, const struct pcap_pkthdr *, 211 const u_char *); 212 extern void fddi_if_print(u_char *, const struct pcap_pkthdr *, const u_char *); 213 extern void gre_print(const u_char *, u_int); 214 extern void icmp_print(const u_char *, u_int, const u_char *); 215 extern void igmp_print(const u_char *, u_int, const u_char *); 216 extern void igrp_print(const u_char *, u_int, const u_char *); 217 extern void ip_print(const u_char *, u_int); 218 extern void ipN_print(const u_char *, u_int); 219 extern void ipx_print(const u_char *, u_int); 220 extern void isoclns_print(const u_char *, u_int, u_int, const u_char *, 221 const u_char *); 222 extern void krb_print(const u_char *, u_int); 223 extern void llap_print(const u_char *, u_int); 224 extern void nfsreply_print(const u_char *, u_int, const u_char *); 225 extern void nfsreq_print(const u_char *, u_int, const u_char *); 226 extern void ns_print(const u_char *, u_int); 227 extern void ntp_print(const u_char *, u_int); 228 extern void null_if_print(u_char *, const struct pcap_pkthdr *, const u_char *); 229 extern void ospf_print(const u_char *, u_int, const u_char *); 230 extern void pimv1_print(const u_char *, u_int); 231 extern void cisco_autorp_print(const u_char *, u_int); 232 extern void mobile_print(const u_char *, u_int); 233 extern void pim_print(const u_char *, u_int); 234 extern void pppoe_print(const u_char *, u_int); 235 extern void ppp_print(register const u_char *, u_int); 236 extern void ppp_if_print(u_char *, const struct pcap_pkthdr *, const u_char *); 237 extern void ppp_hdlc_if_print(u_char *, const struct pcap_pkthdr *, 238 const u_char *); 239 extern void ppp_bsdos_if_print(u_char *, const struct pcap_pkthdr *, 240 const u_char *); 241 extern int vjc_print(register const char *, register u_int, u_short); 242 extern void raw_if_print(u_char *, const struct pcap_pkthdr *, const u_char *); 243 extern void rip_print(const u_char *, u_int); 244 extern void sl_if_print(u_char *, const struct pcap_pkthdr *, const u_char *); 245 extern void lane_if_print(u_char *, const struct pcap_pkthdr *,const u_char *); 246 extern void cip_if_print(u_char *, const struct pcap_pkthdr *,const u_char *); 247 extern void sl_bsdos_if_print(u_char *, const struct pcap_pkthdr *, 248 const u_char *); 249 extern void chdlc_if_print(u_char *, const struct pcap_pkthdr *, 250 const u_char *); 251 extern void sll_if_print(u_char *, const struct pcap_pkthdr *, const u_char *); 252 extern void snmp_print(const u_char *, u_int); 253 extern void sunrpcrequest_print(const u_char *, u_int, const u_char *); 254 extern void tcp_print(const u_char *, u_int, const u_char *, int); 255 extern void tftp_print(const u_char *, u_int); 256 extern void timed_print(const u_char *, u_int); 257 extern void udp_print(const u_char *, u_int, const u_char *, int); 258 extern void wb_print(const void *, u_int); 259 extern int ah_print(register const u_char *, register const u_char *); 260 extern int esp_print(register const u_char *, register const u_char *, int *); 261 extern void isakmp_print(const u_char *, u_int, const u_char *); 262 extern int ipcomp_print(register const u_char *, register const u_char *, int *); 263 extern void rx_print(register const u_char *, int, int, int, u_char *); 264 extern void netbeui_print(u_short, const u_char *, const u_char *); 265 extern void ipx_netbios_print(const u_char *, const u_char *); 266 extern void nbt_tcp_print(const u_char *, int); 267 extern void nbt_udp137_print(const u_char *data, int); 268 extern void nbt_udp138_print(const u_char *data, int); 269 extern char *smb_errstr(int, int); 270 extern void print_data(const unsigned char *, int); 271 extern void l2tp_print(const u_char *, u_int); 272 extern void lcp_print(const u_char *, u_int); 273 extern void vrrp_print(const u_char *bp, u_int len, int ttl); 274 extern void cdp_print(const u_char *p, u_int length, u_int caplen, 275 const u_char *esrc, const u_char *edst); 276 extern void stp_print(const u_char *p, u_int length); 277 extern void radius_print(const u_char *, u_int); 278 279 #ifdef INET6 280 extern void ip6_print(const u_char *, int); 281 extern void ip6_opt_print(const u_char *, int); 282 extern int hbhopt_print(const u_char *); 283 extern int dstopt_print(const u_char *); 284 extern int frag6_print(const u_char *, const u_char *); 285 extern void icmp6_print(const u_char *, const u_char *); 286 extern void ripng_print(const u_char *, int); 287 extern int rt6_print(const u_char *, const u_char *); 288 extern void ospf6_print(const u_char *, u_int); 289 extern void dhcp6_print(const u_char *, u_int, u_int16_t, u_int16_t); 290 #endif /*INET6*/ 291 extern u_short in_cksum(const u_short *addr, register int len, u_short csum); 292