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	1	/*
	2	* Copyright (c) 1988-1997
	3	* The Regents of the University of California. All rights reserved.
	4	*
	5	* Copyright (c) 1998-2004 Michael Richardson <mcr@tcpdump.org>
	6	* The TCPDUMP project
	7	*
	8	* Redistribution and use in source and binary forms, with or without
	9	* modification, are permitted provided that: (1) source code distributions
	10	* retain the above copyright notice and this paragraph in its entirety, (2)
	11	* distributions including binary code include the above copyright notice and
	12	* this paragraph in its entirety in the documentation or other materials
	13	* provided with the distribution, and (3) all advertising materials mentioning
	14	* features or use of this software display the following acknowledgement:
	15	* ``This product includes software developed by the University of California,
	16	* Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
	17	* the University nor the names of its contributors may be used to endorse
	18	* or promote products derived from this software without specific prior
	19	* written permission.
	20	* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
	21	* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
	22	* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
	23	*
	24	* @(#) $Header: /tcpdump/master/tcpdump/netdissect.h,v 1.16.2.4 2006/02/08 01:40:09 hannes Exp $ (LBL)
	25	*/
	26
	27	#ifndef netdissect_h
	28	#define netdissect_h
	29
	30	#ifdef HAVE_OS_PROTO_H
	31	#include "os-proto.h"
	32	#endif
	33	#include <sys/types.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 str, size_t sz, const char format, ...)
	45	__attribute__ ((format (printf, 3, 4)));
	46	#endif
	47
	48	#if !defined(HAVE_VSNPRINTF)
	49	int vsnprintf (char str, size_t sz, const char format, va_list ap)
	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 str);
	62	#endif
	63
	64	#ifndef HAVE_STRSEP
	65	extern char strsep(char , const char );
	66	#endif
	67
	68	struct tok {
	69	int v; /* value */
	70	const char s; / string */
	71	};
	72
	73	#define TOKBUFSIZE 128
	74	extern const char tok2strbuf(const struct tok , const char *, int,
	75	char *buf, size_t bufsize);
	76
	77	/* tok2str is deprecated */
	78	extern const char tok2str(const struct tok , const char *, int);
	79	extern char bittok2str(const struct tok , const char *, int);
	80
	81
	82	typedef struct netdissect_options netdissect_options;
	83
	84	struct netdissect_options {
	85	int ndo_aflag; /* translate network and broadcast addresses */
	86	int ndo_eflag; /* print ethernet header */
	87	int ndo_fflag; /* don't translate "foreign" IP address */
	88	int ndo_nflag; /* leave addresses as numbers */
	89	int ndo_Nflag; /* remove domains from printed host names */
	90	int ndo_qflag; /* quick (shorter) output */
	91	int ndo_Rflag; /* print sequence # field in AH/ESP*/
	92	int ndo_sflag; /* use the libsmi to translate OIDs */
	93	int ndo_Sflag; /* print raw TCP sequence numbers */
	94	int ndo_tflag; /* print packet arrival time */
	95	int ndo_Uflag; /* "unbuffered" output of dump files */
	96	int ndo_uflag; /* Print undecoded NFS handles */
	97	int ndo_vflag; /* verbose */
	98	int ndo_xflag; /* print packet in hex */
	99	int ndo_Xflag; /* print packet in hex/ascii */
	100	int ndo_Aflag; /* print packet only in ascii observing TAB,
	101	* LF, CR and SPACE as graphical chars
	102	*/
	103	int ndo_Oflag; /* run filter code optimizer */
	104	int ndo_dlt; /* if != -1, ask libpcap for the DLT it names*/
	105	int ndo_pflag; /* don't go promiscuous */
	106
	107	int ndo_Cflag; /* rotate dump files after this many bytes */
	108	int ndo_Cflag_count; /* Keep track of which file number we're writing */
	109	int ndo_Wflag; /* recycle output files after this number of files */
	110	int ndo_WflagChars;
	111	int ndo_suppress_default_print; /* don't use default_print() for unknown packet types */
	112	const char *ndo_dltname;
	113
	114	char *ndo_espsecret;
	115	struct sa_list ndo_sa_list_head; / used by print-esp.c */
	116	struct sa_list *ndo_sa_default;
	117
	118	char ndo_tcpmd5secret; / TCP-MD5 secret key */
	119
	120	struct esp_algorithm ndo_espsecret_xform; / cache of decoded */
	121	char *ndo_espsecret_key;
	122
	123	int ndo_packettype; /* as specified by -T */
	124
	125	char ndo_program_name; /used to generate self-identifying messages */
	126
	127	int32_t ndo_thiszone; /* seconds offset from gmt to local time */
	128
	129	int ndo_snaplen;
	130
	131	/global pointers to beginning and end of current packet (during printing) /
	132	const u_char *ndo_packetp;
	133	const u_char *ndo_snapend;
	134
	135	/* bookkeeping for ^T output */
	136	int ndo_infodelay;
	137
	138	/* pointer to void function to output stuff */
	139	void (ndo_default_print)(netdissect_options ,
	140	register const u_char *bp, register u_int length);
	141	void (ndo_info)(netdissect_options , int verbose);
	142
	143	int (ndo_printf)(netdissect_options ,
	144	const char *fmt, ...);
	145	void (ndo_error)(netdissect_options ,
	146	const char *fmt, ...);
	147	void (ndo_warning)(netdissect_options ,
	148	const char *fmt, ...);
	149	};
	150
	151	#define PT_VAT 1 /* Visual Audio Tool */
	152	#define PT_WB 2 /* distributed White Board */
	153	#define PT_RPC 3 /* Remote Procedure Call */
	154	#define PT_RTP 4 /* Real-Time Applications protocol */
	155	#define PT_RTCP 5 /* Real-Time Applications control protocol */
	156	#define PT_SNMP 6 /* Simple Network Management Protocol */
	157	#define PT_CNFP 7 /* Cisco NetFlow protocol */
	158
	159	#ifndef min
	160	#define min(a,b) ((a)>(b)?(b):(a))
	161	#endif
	162	#ifndef max
	163	#define max(a,b) ((b)>(a)?(b):(a))
	164	#endif
	165
	166	#ifndef INET6
	167	/*
	168	* The default snapshot length. This value allows most printers to print
	169	* useful information while keeping the amount of unwanted data down.
	170	* In particular, it allows for an ethernet header, tcp/ip header, and
	171	* 14 bytes of data (assuming no ip options).
	172	*/
	173	#define DEFAULT_SNAPLEN 68
	174	#else
	175	#define DEFAULT_SNAPLEN 96
	176	#endif
	177
	178	#ifndef BIG_ENDIAN
	179	#define BIG_ENDIAN 4321
	180	#define LITTLE_ENDIAN 1234
	181	#endif
	182
	183	#define ESRC(ep) ((ep)->ether_shost)
	184	#define EDST(ep) ((ep)->ether_dhost)
	185
	186	#ifndef NTOHL
	187	#define NTOHL(x) (x) = ntohl(x)
	188	#define NTOHS(x) (x) = ntohs(x)
	189	#define HTONL(x) (x) = htonl(x)
	190	#define HTONS(x) (x) = htons(x)
	191	#endif
	192
	193	/*
	194	* True if "l" bytes of "var" were captured.
	195	*
	196	* The "ndo->ndo_snapend - (l) <= ndo->ndo_snapend" checks to make sure
	197	* "l" isn't so large that "ndo->ndo_snapend - (l)" underflows.
	198	*
	199	* The check is for <= rather than < because "l" might be 0.
	200	*/
	201	#define ND_TTEST2(var, l) (ndo->ndo_snapend - (l) <= ndo->ndo_snapend && \
	202	(const u_char *)&(var) <= ndo->ndo_snapend - (l))
	203
	204	/* True if "var" was captured */
	205	#define ND_TTEST(var) ND_TTEST2(var, sizeof(var))
	206
	207	/* Bail if "l" bytes of "var" were not captured */
	208	#define ND_TCHECK2(var, l) if (!ND_TTEST2(var, l)) goto trunc
	209
	210	/* Bail if "var" was not captured */
	211	#define ND_TCHECK(var) ND_TCHECK2(var, sizeof(var))
	212
	213	#define ND_PRINT(STUFF) (*ndo->ndo_printf)STUFF
	214	#define ND_DEFAULTPRINT(ap, length) (*ndo->ndo_default_print)(ndo, ap, length)
	215
	216	#if 0
	217	extern void ts_print(netdissect_options *ipdo,
	218	const struct timeval *);
	219	extern void relts_print(int);
	220	#endif
	221
	222	extern int fn_print(const u_char , const u_char );
	223	extern int fn_printn(const u_char , u_int, const u_char );
	224	extern const char tok2str(const struct tok , const char *, int);
	225
	226	extern void wrapup(int);
	227
	228	#if 0
	229	extern char read_infile(netdissect_options , char *);
	230	extern char copy_argv(netdissect_options , char **);
	231	#endif
	232
	233	extern void safeputchar(int);
	234	extern void safeputs(const char *, int);
	235
	236	#if 0
	237	extern const char isonsap_string(netdissect_options , const u_char *);
	238	extern const char protoid_string(netdissect_options , const u_char *);
	239	extern const char dnname_string(netdissect_options , u_short);
	240	extern const char dnnum_string(netdissect_options , u_short);
	241	#endif
	242
	243	/* The printer routines. */
	244
	245	#include <pcap.h>
	246
	247
	248	extern void eap_print(netdissect_options ,const u_char , u_int);
	249	extern int esp_print(netdissect_options *,
	250	register const u_char bp, int len, register const u_char bp2,
	251	int nhdr, int padlen);
	252	extern void arp_print(netdissect_options ,const u_char , u_int, u_int);
	253	extern void isakmp_print(netdissect_options ,const u_char ,
	254	u_int, const u_char *);
	255	extern void isakmp_rfc3948_print(netdissect_options ,const u_char ,
	256	u_int, const u_char *);
	257	extern void ip_print(netdissect_options ,const u_char , u_int);
	258	extern void ip_print_inner(netdissect_options *ndo,
	259	const u_char *bp, u_int length, u_int nh,
	260	const u_char *bp2);
	261
	262	/* stuff that has not yet been rototiled */
	263	#if 0
	264	extern void ascii_print(netdissect_options *,u_int);
	265	extern void hex_and_ascii_print_with_offset(netdissect_options ,const char ,
	266	u_int, u_int);
	267	extern void hex_and_ascii_print(netdissect_options ,const char , u_int);
	268	extern void hex_print_with_offset(netdissect_options ,const char ,
	269	u_int, u_int);
	270	extern void hex_print(netdissect_options ,const char , u_int);
	271	extern void telnet_print(netdissect_options ,const u_char , u_int);
	272	extern int ether_encap_print(netdissect_options ,u_short, const u_char ,
	273	u_int, u_int, u_short *);
	274	extern int llc_print(netdissect_options *,
	275	const u_char , u_int, u_int, const u_char ,
	276	const u_char , u_short );
	277	extern void aarp_print(netdissect_options ,const u_char , u_int);
	278	extern void atalk_print(netdissect_options ,const u_char , u_int);
	279	extern void atm_if_print(u_char ,const struct pcap_pkthdr , const u_char *);
	280	extern void bootp_print(netdissect_options ,const u_char ,
	281	u_int, u_short, u_short);
	282	extern void bgp_print(netdissect_options ,const u_char , int);
	283	extern void bxxp_print(netdissect_options ,const u_char , u_int);
	284	extern void chdlc_if_print(u_char user, const struct pcap_pkthdr h,
	285	register const u_char *p);
	286	extern void chdlc_print(netdissect_options *ndo,
	287	register const u_char *p, u_int length, u_int caplen);
	288	extern void cisco_autorp_print(netdissect_options *,
	289	const u_char *, u_int);
	290	extern void cnfp_print(netdissect_options ,const u_char cp,
	291	u_int len, const u_char *bp);
	292	extern void decnet_print(netdissect_options ,const u_char ,
	293	u_int, u_int);
	294	extern void default_print(netdissect_options ,const u_char , u_int);
	295	extern void dvmrp_print(netdissect_options ,const u_char , u_int);
	296	extern void egp_print(netdissect_options ,const u_char , u_int,
	297	const u_char *);
	298
	299	extern void arcnet_if_print(u_char,const struct pcap_pkthdr ,const u_char *);
	300	extern void ether_if_print(u_char ,const struct pcap_pkthdr ,const u_char *);
	301	extern void token_if_print(u_char ,const struct pcap_pkthdr ,const u_char *);
	302	extern void fddi_if_print(u_char ,const struct pcap_pkthdr , const u_char *);
	303
	304	extern void gre_print(netdissect_options ,const u_char , u_int);
	305	extern void icmp_print(netdissect_options ,const u_char , u_int,
	306	const u_char *);
	307	extern void hsrp_print(netdissect_options *ndo,
	308	register const u_char *bp, register u_int len);
	309	extern void ieee802_11_if_print(u_char ,const struct pcap_pkthdr , const u_char *);
	310	extern void igmp_print(netdissect_options *,
	311	register const u_char *, u_int);
	312	extern void igrp_print(netdissect_options ,const u_char , u_int,
	313	const u_char *);
	314	extern void ipN_print(netdissect_options ,const u_char , u_int);
	315	extern void ipx_print(netdissect_options ,const u_char , u_int);
	316	extern void isoclns_print(netdissect_options ,const u_char ,
	317	u_int, u_int, const u_char , const u_char );
	318	extern void krb_print(netdissect_options ,const u_char , u_int);
	319	extern void llap_print(netdissect_options ,const u_char , u_int);
	320	extern const char linkaddr_string(netdissect_options ndo,
	321	const u_char *ep, const unsigned int len);
	322	extern void ltalk_if_print(netdissect_options *ndo,
	323	u_char user, const struct pcap_pkthdr h,
	324	const u_char *p);
	325	extern void mpls_print(netdissect_options *ndo,
	326	const u_char *bp, u_int length);
	327	extern void msdp_print(netdissect_options *ndo,
	328	const unsigned char *sp, u_int length);
	329	extern void nfsreply_print(netdissect_options ,const u_char ,
	330	u_int, const u_char *);
	331	extern void nfsreq_print(netdissect_options ,const u_char ,
	332	u_int, const u_char *);
	333	extern void ns_print(netdissect_options ,const u_char , u_int);
	334	extern void ntp_print(netdissect_options ,const u_char , u_int);
	335	extern void null_if_print(u_char ,const struct pcap_pkthdr , const u_char *);
	336	extern void ospf_print(netdissect_options ,const u_char ,
	337	u_int, const u_char *);
	338	extern void pimv1_print(netdissect_options ,const u_char , u_int);
	339	extern void mobile_print(netdissect_options ,const u_char , u_int);
	340	extern void pim_print(netdissect_options ,const u_char , u_int);
	341	extern void pppoe_if_print(u_char ,const struct pcap_pkthdr , const u_char *);
	342	extern void pppoe_print(netdissect_options ,const u_char , u_int);
	343	extern void ppp_print(netdissect_options *,
	344	register const u_char *, u_int);
	345
	346	extern void ppp_if_print(u_char ,const struct pcap_pkthdr , const u_char *);
	347	extern void ppp_hdlc_if_print(u_char *,
	348	const struct pcap_pkthdr , const u_char );
	349	extern void ppp_bsdos_if_print(u_char *,
	350	const struct pcap_pkthdr , const u_char );
	351
	352	extern int vjc_print(netdissect_options ,register const char ,
	353	register u_int, u_short);
	354
	355	extern void raw_if_print(u_char *,
	356	const struct pcap_pkthdr , const u_char );
	357
	358	extern void rip_print(netdissect_options ,const u_char , u_int);
	359
	360	extern void sctp_print(netdissect_options *ndo,
	361	const u_char bp, const u_char bp2,
	362	u_int sctpPacketLength);
	363
	364	extern void sl_if_print(u_char ,const struct pcap_pkthdr , const u_char *);
	365
	366	extern void lane_if_print(u_char ,const struct pcap_pkthdr ,const u_char *);
	367	extern void cip_if_print(u_char ,const struct pcap_pkthdr ,const u_char *);
	368	extern void sl_bsdos_if_print(u_char *,
	369	const struct pcap_pkthdr , const u_char );
	370	extern void sll_if_print(u_char *,
	371	const struct pcap_pkthdr , const u_char );
	372
	373	extern void snmp_print(netdissect_options ,const u_char , u_int);
	374	extern void sunrpcrequest_print(netdissect_options ,const u_char ,
	375	u_int, const u_char *);
	376	extern void tcp_print(netdissect_options ,const u_char , u_int,
	377	const u_char *, int);
	378	extern void tftp_print(netdissect_options ,const u_char , u_int);
	379	extern void timed_print(netdissect_options ,const u_char , u_int);
	380	extern void udp_print(netdissect_options ,const u_char , u_int,
	381	const u_char *, int);
	382	extern void wb_print(netdissect_options ,const void , u_int);
	383	extern int ah_print(netdissect_options ,register const u_char ,
	384	register const u_char *);
	385	extern void esp_print_decodesecret(netdissect_options *ndo);
	386	extern int ipcomp_print(netdissect_options ,register const u_char ,
	387	register const u_char , int );
	388	extern void rx_print(netdissect_options ,register const u_char ,
	389	int, int, int, u_char *);
	390	extern void netbeui_print(netdissect_options *,u_short,
	391	const u_char *, int);
	392	extern void ipx_netbios_print(netdissect_options ,const u_char , u_int);
	393	extern void nbt_tcp_print(netdissect_options ,const u_char , int);
	394	extern void nbt_udp137_print(netdissect_options *,
	395	const u_char *data, int);
	396	extern void nbt_udp138_print(netdissect_options *,
	397	const u_char *data, int);
	398	extern char smb_errstr(netdissect_options ,int, int);
	399	extern const char nt_errstr(netdissect_options , u_int32_t);
	400	extern void print_data(netdissect_options ,const unsigned char , int);
	401	extern void l2tp_print(netdissect_options ,const u_char , u_int);
	402	extern void lcp_print(netdissect_options ,const u_char , u_int);
	403	extern void vrrp_print(netdissect_options ,const u_char bp,
	404	u_int len, int ttl);
	405	extern void cdp_print(netdissect_options ,const u_char ,
	406	u_int, u_int, const u_char , const u_char );
	407	extern void stp_print(netdissect_options ,const u_char p, u_int length);
	408	extern void radius_print(netdissect_options ,const u_char , u_int);
	409	extern void lwres_print(netdissect_options ,const u_char , u_int);
	410	extern void pptp_print(netdissect_options ,const u_char , u_int);
	411
	412	#ifdef INET6
	413	extern void ip6_print(netdissect_options ,const u_char , u_int);
	414	extern void ip6_opt_print(netdissect_options ,const u_char , int);
	415	extern int hbhopt_print(netdissect_options ,const u_char );
	416	extern int dstopt_print(netdissect_options ,const u_char );
	417	extern int frag6_print(netdissect_options ,const u_char ,
	418	const u_char *);
	419	extern void icmp6_print(netdissect_options ,const u_char ,
	420	const u_char *);
	421	extern void ripng_print(netdissect_options ,const u_char , int);
	422	extern int rt6_print(netdissect_options ,const u_char , const u_char *);
	423	extern void ospf6_print(netdissect_options ,const u_char , u_int);
	424	extern void dhcp6_print(netdissect_options ,const u_char ,
	425	u_int, u_int16_t, u_int16_t);
	426
	427	extern void zephyr_print(netdissect_options * ndo,
	428	const u_char *cp, int length);
	429
	430	#endif /INET6/
	431	extern u_short in_cksum(const u_short *,
	432	register u_int, int);
	433
	434	#endif
	435
	436	#endif /* netdissect_h */