1 /* 2 * Copyright (c) 1988-2002 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 1.178 2002/01/21 11:39:58 mcr Exp $ (LBL) 22 * 23 * $FreeBSD$ 24 */ 25 26 #ifndef tcpdump_interface_h 27 #define tcpdump_interface_h 28 29 #ifdef HAVE_OS_PROTO_H 30 #include "os-proto.h" 31 #endif 32 #include <sys/types.h> 33 #include <sys/time.h> 34 35 #ifndef HAVE___ATTRIBUTE__ 36 #define __attribute__(x) 37 #endif 38 39 /* snprintf et al */ 40 41 #include <stdarg.h> 42 43 #if !defined(HAVE_SNPRINTF) 44 int snprintf(char *, size_t, const char *, ...) 45 __attribute__((format(printf, 3, 4))); 46 #endif 47 48 #if !defined(HAVE_VSNPRINTF) 49 int vsnprintf(char *, size_t, const char *, va_list) 50 __attribute__((format(printf, 3, 0))); 51 #endif 52 53 #ifndef HAVE_STRLCAT 54 extern size_t strlcat(char *, const char *, size_t); 55 #endif 56 #ifndef HAVE_STRLCPY 57 extern size_t strlcpy(char *, const char *, size_t); 58 #endif 59 60 #ifndef HAVE_STRDUP 61 extern char *strdup(const char *); 62 #endif 63 64 struct tok { 65 int v; /* value */ 66 const char *s; /* string */ 67 }; 68 69 extern int aflag; /* translate network and broadcast addresses */ 70 extern int dflag; /* print filter code */ 71 extern int eflag; /* print ethernet header */ 72 extern int fflag; /* don't translate "foreign" IP address */ 73 extern int nflag; /* leave addresses as numbers */ 74 extern int Nflag; /* remove domains from printed host names */ 75 extern int qflag; /* quick (shorter) output */ 76 extern int Rflag; /* print sequence # field in AH/ESP*/ 77 extern int sflag; /* use the libsmi to translate OIDs */ 78 extern int Sflag; /* print raw TCP sequence numbers */ 79 extern int tflag; /* print packet arrival time */ 80 extern int uflag; /* Print undecoded NFS handles */ 81 extern int vflag; /* verbose */ 82 extern int xflag; /* print packet in hex */ 83 extern int Xflag; /* print packet in hex/ascii */ 84 85 extern char *espsecret; 86 extern struct esp_algorithm *espsecret_xform; /* cache of decoded alg. */ 87 extern char *espsecret_key; 88 89 extern int packettype; /* as specified by -T */ 90 #define PT_VAT 1 /* Visual Audio Tool */ 91 #define PT_WB 2 /* distributed White Board */ 92 #define PT_RPC 3 /* Remote Procedure Call */ 93 #define PT_RTP 4 /* Real-Time Applications protocol */ 94 #define PT_RTCP 5 /* Real-Time Applications control protocol */ 95 #define PT_SNMP 6 /* Simple Network Management Protocol */ 96 #define PT_CNFP 7 /* Cisco NetFlow protocol */ 97 98 #ifndef min 99 #define min(a,b) ((a)>(b)?(b):(a)) 100 #endif 101 #ifndef max 102 #define max(a,b) ((b)>(a)?(b):(a)) 103 #endif 104 105 /* 106 * The default snapshot length. This value allows most printers to print 107 * useful information while keeping the amount of unwanted data down. 108 */ 109 #ifndef INET6 110 #define DEFAULT_SNAPLEN 68 /* ether + IPv4 + TCP + 14 */ 111 #else 112 #define DEFAULT_SNAPLEN 96 /* ether + IPv6 + TCP + 22 */ 113 #endif 114 115 #ifndef BIG_ENDIAN 116 #define BIG_ENDIAN 4321 117 #define LITTLE_ENDIAN 1234 118 #endif 119 120 #define ESRC(ep) ((ep)->ether_shost) 121 #define EDST(ep) ((ep)->ether_dhost) 122 123 #ifndef NTOHL 124 #define NTOHL(x) (x) = ntohl(x) 125 #define NTOHS(x) (x) = ntohs(x) 126 #define HTONL(x) (x) = htonl(x) 127 #define HTONS(x) (x) = htons(x) 128 #endif 129 #endif 130 131 extern char *program_name; /* used to generate self-identifying messages */ 132 133 extern int32_t thiszone; /* seconds offset from gmt to local time */ 134 135 extern int snaplen; 136 /* global pointers to beginning and end of current packet (during printing) */ 137 extern const u_char *packetp; 138 extern const u_char *snapend; 139 140 /* 141 * True if "l" bytes of "var" were captured. 142 * 143 * The "snapend - (l) <= snapend" checks to make sure "l" isn't so large 144 * that "snapend - (l)" underflows. 145 * 146 * The check is for <= rather than < because "l" might be 0. 147 */ 148 #define TTEST2(var, l) (snapend - (l) <= snapend && \ 149 (const u_char *)&(var) <= snapend - (l)) 150 151 /* True if "var" was captured */ 152 #define TTEST(var) TTEST2(var, sizeof(var)) 153 154 /* Bail if "l" bytes of "var" were not captured */ 155 #define TCHECK2(var, l) if (!TTEST2(var, l)) goto trunc 156 157 /* Bail if "var" was not captured */ 158 #define TCHECK(var) TCHECK2(var, sizeof(var)) 159 160 extern void ts_print(const struct timeval *); 161 extern void relts_print(int); 162 163 extern int fn_print(const u_char *, const u_char *); 164 extern int fn_printn(const u_char *, u_int, const u_char *); 165 extern const char *tok2str(const struct tok *, const char *, int); 166 extern const char *tok2strary_internal(const char **, int, const char *, int); 167 #define tok2strary(a,f,i) tok2strary_internal(a, sizeof(a)/sizeof(a[0]),f,i) 168 169 extern const char *dnaddr_string(u_short); 170 171 extern void info(int); 172 extern int infodelay; 173 extern int infoprint; 174 175 extern void error(const char *, ...) 176 __attribute__((noreturn, format (printf, 1, 2))); 177 extern void warning(const char *, ...) __attribute__ ((format (printf, 1, 2))); 178 179 extern char *read_infile(char *); 180 extern char *copy_argv(char **); 181 182 extern void safeputchar(int); 183 extern void safeputs(const char *); 184 185 extern const char *isonsap_string(const u_char *); 186 extern const char *llcsap_string(u_char); 187 extern const char *protoid_string(const u_char *); 188 extern const char *ipxsap_string(u_short); 189 extern const char *dnname_string(u_short); 190 extern const char *dnnum_string(u_short); 191 192 /* The printer routines. */ 193 194 #include <pcap.h> 195 196 extern void ascii_print_with_offset(const u_char *, u_int, u_int); 197 extern void ascii_print(const u_char *, u_int); 198 extern void hex_print_with_offset(const u_char *, u_int, u_int); 199 extern void telnet_print(const u_char *, u_int); 200 extern void hex_print(const u_char *, u_int); 201 extern int ether_encap_print(u_short, const u_char *, u_int, u_int, u_short *); 202 extern int llc_print(const u_char *, u_int, u_int, const u_char *, 203 const u_char *, u_short *); 204 extern void aarp_print(const u_char *, u_int); 205 extern void arp_print(const u_char *, u_int, u_int); 206 extern void atalk_print(const u_char *, u_int); 207 extern void atm_if_print(u_char *, const struct pcap_pkthdr *, const u_char *); 208 extern void bootp_print(const u_char *, u_int, u_short, u_short); 209 extern void bgp_print(const u_char *, int); 210 extern void beep_print(const u_char *, u_int); 211 extern void cnfp_print(const u_char *, u_int, const u_char *); 212 extern void decnet_print(const u_char *, u_int, u_int); 213 extern void default_print(const u_char *, u_int); 214 extern void default_print_unaligned(const u_char *, u_int); 215 extern void dvmrp_print(const u_char *, u_int); 216 extern void egp_print(const u_char *, u_int, const u_char *); 217 extern void arcnet_if_print(u_char *, const struct pcap_pkthdr *, 218 const u_char *); 219 extern void ether_if_print(u_char *, const struct pcap_pkthdr *, 220 const u_char *); 221 extern void token_if_print(u_char *, const struct pcap_pkthdr *, 222 const u_char *); 223 extern void fddi_if_print(u_char *, const struct pcap_pkthdr *, const u_char *); 224 extern void ieee802_11_if_print(u_char *, const struct pcap_pkthdr *, 225 const u_char *); 226 extern void gre_print(const u_char *, u_int); 227 extern void icmp_print(const u_char *, u_int, const u_char *); 228 extern void igmp_print(const u_char *, u_int); 229 extern void igrp_print(const u_char *, u_int, const u_char *); 230 extern void ip_print(const u_char *, u_int); 231 extern void ipN_print(const u_char *, u_int); 232 extern void ipx_print(const u_char *, u_int); 233 extern void isoclns_print(const u_char *, u_int, u_int, const u_char *, 234 const u_char *); 235 extern void krb_print(const u_char *, u_int); 236 extern void llap_print(const u_char *, u_int); 237 extern void ltalk_if_print(u_char *, const struct pcap_pkthdr *, 238 const u_char *); 239 extern void msdp_print(const unsigned char *, u_int); 240 extern void nfsreply_print(const u_char *, u_int, const u_char *); 241 extern void nfsreq_print(const u_char *, u_int, const u_char *); 242 extern void ns_print(const u_char *, u_int); 243 extern void ntp_print(const u_char *, u_int); 244 extern void null_if_print(u_char *, const struct pcap_pkthdr *, const u_char *); 245 extern void ospf_print(const u_char *, u_int, const u_char *); 246 extern void pimv1_print(const u_char *, u_int); 247 extern void cisco_autorp_print(const u_char *, u_int); 248 extern void mobile_print(const u_char *, u_int); 249 extern void pim_print(const u_char *, u_int); 250 extern void pppoe_print(const u_char *, u_int); 251 extern void ppp_print(register const u_char *, u_int); 252 extern void ppp_if_print(u_char *, const struct pcap_pkthdr *, const u_char *); 253 extern void ppp_hdlc_if_print(u_char *, const struct pcap_pkthdr *, 254 const u_char *); 255 extern void ppp_bsdos_if_print(u_char *, const struct pcap_pkthdr *, 256 const u_char *); 257 extern void pppoe_if_print(u_char *, const struct pcap_pkthdr *, 258 const u_char *); 259 extern int vjc_print(register const char *, register u_int, u_short); 260 extern void raw_if_print(u_char *, const struct pcap_pkthdr *, const u_char *); 261 extern void rip_print(const u_char *, u_int); 262 extern void sl_if_print(u_char *, const struct pcap_pkthdr *, const u_char *); 263 extern void lane_if_print(u_char *, const struct pcap_pkthdr *,const u_char *); 264 extern void cip_if_print(u_char *, const struct pcap_pkthdr *,const u_char *); 265 extern void sl_bsdos_if_print(u_char *, const struct pcap_pkthdr *, 266 const u_char *); 267 extern void chdlc_if_print(u_char *, const struct pcap_pkthdr *, 268 const u_char *); 269 extern void chdlc_print(register const u_char *, u_int, u_int); 270 extern void sll_if_print(u_char *, const struct pcap_pkthdr *, const u_char *); 271 extern void snmp_print(const u_char *, u_int); 272 extern void sunrpcrequest_print(const u_char *, u_int, const u_char *); 273 extern void tcp_print(const u_char *, u_int, const u_char *, int); 274 extern void tftp_print(const u_char *, u_int); 275 extern void timed_print(const u_char *, u_int); 276 extern void udp_print(const u_char *, u_int, const u_char *, int); 277 extern void wb_print(const void *, u_int); 278 extern int ah_print(register const u_char *, register const u_char *); 279 extern int esp_print(register const u_char *, register const u_char *, int *, int *); 280 extern void isakmp_print(const u_char *, u_int, const u_char *); 281 extern int ipcomp_print(register const u_char *, register const u_char *, int *); 282 extern void rx_print(register const u_char *, int, int, int, u_char *); 283 extern void netbeui_print(u_short, const u_char *, int); 284 extern void ipx_netbios_print(const u_char *, u_int); 285 extern void nbt_tcp_print(const u_char *, int); 286 extern void nbt_udp137_print(const u_char *, int); 287 extern void nbt_udp138_print(const u_char *, int); 288 extern char *smb_errstr(int, int); 289 extern void print_data(const unsigned char *, int); 290 extern void l2tp_print(const u_char *, u_int); 291 extern void lcp_print(const u_char *, u_int); 292 extern void vrrp_print(const u_char *, u_int, int); 293 extern void cdp_print(const u_char *, u_int, u_int, const u_char *, 294 const u_char *); 295 extern void stp_print(const u_char *, u_int); 296 extern void radius_print(const u_char *, u_int); 297 extern void lwres_print(const u_char *, u_int); 298 extern void pptp_print(const u_char *, u_int); 299 extern void sctp_print(const u_char *, const u_char *, u_int); 300 extern void mpls_print(const u_char *, u_int); 301 extern void zephyr_print(const u_char *, int); 302 extern void hsrp_print(const u_char *, u_int); 303 304 #ifdef INET6 305 extern void ip6_print(const u_char *, u_int); 306 extern void ip6_opt_print(const u_char *, int); 307 extern int hbhopt_print(const u_char *); 308 extern int dstopt_print(const u_char *); 309 extern int frag6_print(const u_char *, const u_char *); 310 extern void icmp6_print(const u_char *, const u_char *); 311 extern void ripng_print(const u_char *, unsigned int); 312 extern int rt6_print(const u_char *, const u_char *); 313 extern void ospf6_print(const u_char *, u_int); 314 extern void dhcp6_print(const u_char *, u_int, u_int16_t, u_int16_t); 315 #endif /*INET6*/ 316 extern u_short in_cksum(const u_short *, register u_int, int); 317 318 #ifndef HAVE_BPF_DUMP 319 struct bpf_program; 320 321 extern void bpf_dump(struct bpf_program *, int); 322 #endif 323