1/* $OpenBSD: interface.h,v 1.88 2024/05/21 05:00:48 jsg Exp $ */ 2 3/* 4 * Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that: (1) source code distributions 9 * retain the above copyright notice and this paragraph in its entirety, (2) 10 * distributions including binary code include the above copyright notice and 11 * this paragraph in its entirety in the documentation or other materials 12 * provided with the distribution, and (3) all advertising materials mentioning 13 * features or use of this software display the following acknowledgement: 14 * ``This product includes software developed by the University of California, 15 * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of 16 * the University nor the names of its contributors may be used to endorse 17 * or promote products derived from this software without specific prior 18 * written permission. 19 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED 20 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF 21 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. 22 * 23 * @(#) $Id: interface.h,v 1.88 2024/05/21 05:00:48 jsg Exp $ (LBL) 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 33struct tok { 34 int v; /* value */ 35 char *s; /* string */ 36}; 37 38extern int aflag; /* translate network and broadcast addresses */ 39extern int dflag; /* print filter code */ 40extern int eflag; /* print ethernet header */ 41extern int fflag; /* don't translate "foreign" IP address */ 42extern int Iflag; /* include interface in output */ 43extern int nflag; /* leave addresses as numbers */ 44extern int Nflag; /* remove domains from printed host names */ 45extern int oflag; /* OS fingerprint */ 46extern int qflag; /* quick (shorter) output */ 47extern int Sflag; /* print raw TCP sequence numbers */ 48extern int tflag; /* print packet arrival time */ 49extern int vflag; /* verbose */ 50extern int xflag; /* print packet in hex */ 51extern int Xflag; /* print packet in hex/ascii */ 52 53extern int packettype; /* as specified by -T */ 54extern char *device; /* as specified by -i */ 55#define PT_VAT 1 /* Visual Audio Tool */ 56#define PT_WB 2 /* distributed White Board */ 57#define PT_RPC 3 /* Remote Procedure Call */ 58#define PT_RTP 4 /* Real-Time Applications protocol */ 59#define PT_RTCP 5 /* Real-Time Applications control protocol */ 60#define PT_CNFP 6 /* Cisco NetFlow protocol */ 61#define PT_VRRP 7 /* Virtual Router Redundancy protocol */ 62#define PT_TCP 8 /* TCP */ 63#define PT_GRE 9 /* Generic Routing Encapsulation (over UDP) */ 64#define PT_MPLS 10 /* MPLS (over UDP) */ 65#define PT_TFTP 11 /* Trivial File Transfer Protocol */ 66#define PT_VXLAN 12 /* Virtual eXtensible Local Area Network */ 67#define PT_ERSPAN 13 /* GRE ERSPAN Type I or II */ 68#define PT_WIREGUARD 14 /* WireGuard tunnel */ 69#define PT_GENEVE 15 /* Geneve */ 70 71#ifndef min 72#define min(a,b) ((a)>(b)?(b):(a)) 73#endif 74#ifndef max 75#define max(a,b) ((b)>(a)?(b):(a)) 76#endif 77 78/* 79 * The default snapshot length. This value allows most printers to print 80 * useful information while keeping the amount of unwanted data down. 81 * In particular, it allows ethernet, tcp/ip headers, and a small amount 82 * of data, or to capture IPv6 and TCP headers after pflog encapsulation. 83 */ 84#define DEFAULT_SNAPLEN 116 85#define IEEE802_11_SNAPLEN (DEFAULT_SNAPLEN + 30) 86#define IEEE802_11_RADIO_SNAPLEN (IEEE802_11_SNAPLEN + 64) 87 88#ifndef BIG_ENDIAN 89#define BIG_ENDIAN 4321 90#define LITTLE_ENDIAN 1234 91#endif 92 93#ifdef ETHER_HEADER_HAS_EA 94#define ESRC(ep) ((ep)->ether_shost.ether_addr_octet) 95#define EDST(ep) ((ep)->ether_dhost.ether_addr_octet) 96#else 97#define ESRC(ep) ((ep)->ether_shost) 98#define EDST(ep) ((ep)->ether_dhost) 99#endif 100 101#ifdef ETHER_ARP_HAS_X 102#define SHA(ap) ((ap)->arp_xsha) 103#define THA(ap) ((ap)->arp_xtha) 104#define SPA(ap) ((ap)->arp_xspa) 105#define TPA(ap) ((ap)->arp_xtpa) 106#else 107#ifdef ETHER_ARP_HAS_EA 108#define SHA(ap) ((ap)->arp_sha.ether_addr_octet) 109#define THA(ap) ((ap)->arp_tha.ether_addr_octet) 110#else 111#define SHA(ap) ((ap)->arp_sha) 112#define THA(ap) ((ap)->arp_tha) 113#endif 114#define SPA(ap) ((ap)->arp_spa) 115#define TPA(ap) ((ap)->arp_tpa) 116#endif 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 126extern char *program_name; /* used to generate self-identifying messages */ 127 128extern int32_t thiszone; /* seconds offset from gmt to local time */ 129 130extern int snaplen; 131/* global pointers to beginning and end of current packet (during printing) */ 132extern const u_char *packetp; 133extern 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 155struct timeval; 156struct bpf_timeval; 157 158extern void ts_print(const struct bpf_timeval *); 159 160extern int fn_print(const u_char *, const u_char *); 161extern int fn_printn(const u_char *, u_int, const u_char *); 162extern void relts_print(int); 163extern const char *tok2str(const struct tok *, const char *, int); 164extern char *dnaddr_string(u_short); 165extern void safeputs(const char *); 166extern void safeputchar(int); 167extern void printb(char *, unsigned short, char *); 168 169extern __dead void error(const char *, ...) 170 __attribute__((__format__ (printf, 1, 2))); 171extern void warning(const char *, ...) 172 __attribute__ ((__format__ (printf, 1, 2))); 173 174extern char *read_infile(char *); 175extern char *copy_argv(char * const *); 176 177extern char *isonsap_string(const u_char *); 178extern char *llcsap_string(u_char); 179extern char *protoid_string(const u_char *); 180extern char *dnname_string(u_short); 181extern char *dnnum_string(u_short); 182 183/* The printer routines. */ 184 185struct pcap_pkthdr; 186 187extern int ether_encap_print(u_short, const u_char *, u_int, u_int); 188extern int llc_print(const u_char *, u_int, u_int, const u_char *, 189 const u_char *); 190extern int pppoe_if_print(u_short, const u_char *, u_int, u_int); 191extern void aarp_print(const u_char *, u_int); 192extern void arp_print(const u_char *, u_int, u_int); 193extern void atalk_print(const u_char *, u_int); 194extern void atalk_print_llap(const u_char *, u_int); 195extern void atm_if_print(u_char *, const struct pcap_pkthdr *, const u_char *); 196extern void bootp_print(const u_char *, u_int, u_short, u_short); 197extern void bgp_print(const u_char *, int); 198extern void decnet_print(const u_char *, u_int, u_int); 199extern void default_print(const u_char *, u_int); 200extern void dvmrp_print(const u_char *, u_int); 201extern void enc_if_print(u_char *, const struct pcap_pkthdr *, const u_char *); 202extern void pflog_if_print(u_char *, const struct pcap_pkthdr *, 203 const u_char *); 204extern void pfsync_if_print(u_char *, const struct pcap_pkthdr *, 205 const u_char *); 206extern void pfsync_ip_print(const u_char *, u_int, const u_char *); 207extern void ether_if_print(u_char *, const struct pcap_pkthdr *, 208 const u_char *); 209extern void ether_tryprint(const u_char *, u_int, int); 210extern void fddi_if_print(u_char *, const struct pcap_pkthdr *, const u_char *); 211extern void ppp_ether_if_print(u_char *, const struct pcap_pkthdr *, 212 const u_char *); 213extern void gre_print(const u_char *, u_int); 214extern void vxlan_print(const u_char *, u_int); 215extern void geneve_print(const u_char *, u_int); 216extern void nsh_print(const u_char *, u_int); 217extern void nhrp_print(const u_char *, u_int); 218extern void icmp_print(const u_char *, u_int, const u_char *); 219extern void ieee802_11_if_print(u_char *, const struct pcap_pkthdr *, 220 const u_char *); 221extern void ieee802_11_radio_if_print(u_char *, const struct pcap_pkthdr *, 222 const u_char *); 223extern void iapp_print(const u_char *, u_int); 224extern void igrp_print(const u_char *, u_int, const u_char *); 225extern void ip_print(const u_char *, u_int); 226extern void ipx_print(const u_char *, u_int); 227extern void isoclns_print(const u_char *, u_int, u_int, const u_char *, 228 const u_char *); 229extern void krb_print(const u_char *, u_int); 230extern void netbeui_print(u_short, const u_char *, const u_char *); 231extern void ipx_netbios_print(const u_char *, const u_char *); 232extern void nbt_tcp_print(const u_char *, int); 233extern void nbt_udp137_print(const u_char *data, int); 234extern void nbt_udp138_print(const u_char *data, int); 235extern char *smb_errstr(int, int); 236extern void print_data(const unsigned char *, int); 237extern void l2tp_print(const u_char *dat, u_int length); 238extern void vrrp_print(const u_char *bp, u_int len, int ttl); 239extern void carp_print(const u_char *bp, u_int len, int ttl); 240extern void hsrp_print(const u_char *, u_int); 241extern void vqp_print(const u_char *, u_int); 242extern void nfsreply_print(const u_char *, u_int, const u_char *); 243extern void nfsreq_print(const u_char *, u_int, const u_char *); 244extern void ns_print(const u_char *, u_int, int); 245extern void ntp_print(const u_char *, u_int); 246extern void loop_if_print(u_char *, const struct pcap_pkthdr *, const u_char *); 247extern void null_if_print(u_char *, const struct pcap_pkthdr *, const u_char *); 248extern void ospf_print(const u_char *, u_int, const u_char *); 249extern void mobile_print(const u_char *, u_int); 250extern void pim_print(const u_char *, u_int); 251extern void ppp_if_print(u_char *, const struct pcap_pkthdr *, const u_char *); 252extern void ppp_hdlc_if_print(u_char *, const struct pcap_pkthdr *, 253 const u_char *); 254extern void ppp_print(const u_char *, u_int); 255extern void ppp_hdlc_print(const u_char *, u_int); 256extern void raw_if_print(u_char *, const struct pcap_pkthdr *, const u_char *); 257extern void rip_print(const u_char *, u_int); 258extern void sl_if_print(u_char *, const struct pcap_pkthdr *, const u_char *); 259extern void sl_bsdos_if_print(u_char *, const struct pcap_pkthdr *, 260 const u_char *); 261extern void snmp_print(const u_char *, u_int); 262extern void sunrpcrequest_print(const u_char *, u_int, const u_char *); 263extern void cnfp_print(const u_char *, u_int); 264extern void tcp_print(const u_char *, u_int, const u_char *); 265extern void tftp_print(const u_char *, u_int); 266extern void wg_print(const u_char *, u_int); 267extern void timed_print(const u_char *, u_int); 268extern void udp_print(const u_char *, u_int, const void *); 269extern void wb_print(const void *, u_int); 270extern void ike_print(const u_char *, u_int); 271extern void udpencap_print(const u_char *, u_int, const u_char *); 272extern void ah_print(const u_char *, u_int, const u_char *); 273extern void esp_print(const u_char *, u_int, const u_char *); 274extern void cdp_print(const u_char *, u_int, u_int, int); 275extern void stp_print(const u_char *, u_int); 276extern void radius_print(const u_char *, u_int); 277extern void lwres_print(const u_char *, u_int); 278extern void ether_print(const u_char *, u_int); 279extern void etherip_print(const u_char *, u_int, u_int); 280extern void ipcomp_print(const u_char *, u_int, const u_char *); 281extern void mpls_print(const u_char *, u_int); 282extern void lldp_print(const u_char *, u_int); 283extern void slow_print(const u_char *, u_int); 284extern void gtp_print(const u_char *, u_int, u_short, u_short); 285extern void ofp_print(const u_char *, u_int); 286extern void ofp_if_print(u_char *, const struct pcap_pkthdr *, const u_char *); 287extern void usbpcap_if_print(u_char *, const struct pcap_pkthdr *, 288 const u_char *); 289 290extern void ip6_print(const u_char *, u_int); 291extern void ip6_opt_print(const u_char *, int); 292extern int hbhopt_print(const u_char *); 293extern int dstopt_print(const u_char *); 294extern int frag6_print(const u_char *, const u_char *); 295extern void icmp6_print(const u_char *, u_int, const u_char *); 296extern void ripng_print(const u_char *, int); 297extern int rt6_print(const u_char *, const u_char *); 298extern void ospf6_print(const u_char *, u_int); 299extern void dhcp6_print(const u_char *, u_int); 300 301extern uint32_t in_cksum_add(const void *, size_t, uint32_t); 302extern uint16_t in_cksum_fini(uint32_t); 303extern uint16_t in_cksum(const void *, size_t, uint32_t); 304extern u_int16_t in_cksum_shouldbe(u_int16_t, u_int16_t); 305 306extern uint32_t wg_match(const u_char *, u_int); 307