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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 1.244.2.21 2007/03/28 07:45:46 hannes Exp $ (LBL)
22  */
23 
24 #ifndef tcpdump_interface_h
25 #define tcpdump_interface_h
26 
27 #ifdef HAVE_OS_PROTO_H
28 #include "os-proto.h"
29 #endif
30 
31 #ifndef HAVE___ATTRIBUTE__
32 #define __attribute__(x)
33 #endif
34 
35 /* snprintf et al */
36 
37 #include <stdarg.h>
38 
39 #if HAVE_STDINT_H
40 #include <stdint.h>
41 #endif
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 #ifndef HAVE_STRSEP
65 extern char *strsep(char **, const char *);
66 #endif
67 
68 #define PT_VAT		1	/* Visual Audio Tool */
69 #define PT_WB		2	/* distributed White Board */
70 #define PT_RPC		3	/* Remote Procedure Call */
71 #define PT_RTP		4	/* Real-Time Applications protocol */
72 #define PT_RTCP		5	/* Real-Time Applications control protocol */
73 #define PT_SNMP		6	/* Simple Network Management Protocol */
74 #define PT_CNFP		7	/* Cisco NetFlow protocol */
75 #define PT_TFTP		8	/* trivial file transfer protocol */
76 #define PT_AODV		9	/* Ad-hoc On-demand Distance Vector Protocol */
77 
78 #ifndef min
79 #define min(a,b) ((a)>(b)?(b):(a))
80 #endif
81 #ifndef max
82 #define max(a,b) ((b)>(a)?(b):(a))
83 #endif
84 
85 /*
86  * The default snapshot length.  This value allows most printers to print
87  * useful information while keeping the amount of unwanted data down.
88  */
89 #ifndef INET6
90 #define DEFAULT_SNAPLEN 68	/* ether + IPv4 + TCP + 14 */
91 #else
92 #define DEFAULT_SNAPLEN 96	/* ether + IPv6 + TCP + 22 */
93 #endif
94 
95 #ifndef BIG_ENDIAN
96 #define BIG_ENDIAN 4321
97 #define LITTLE_ENDIAN 1234
98 #endif
99 
100 #define ESRC(ep) ((ep)->ether_shost)
101 #define EDST(ep) ((ep)->ether_dhost)
102 
103 #ifndef NTOHL
104 #define NTOHL(x)	(x) = ntohl(x)
105 #define NTOHS(x)	(x) = ntohs(x)
106 #define HTONL(x)	(x) = htonl(x)
107 #define HTONS(x)	(x) = htons(x)
108 #endif
109 #endif
110 
111 #ifndef MIN
112 #define MIN(a,b) ((a)<(b)?(a):(b))
113 #endif
114 
115 extern char *program_name;	/* used to generate self-identifying messages */
116 
117 extern int32_t thiszone;	/* seconds offset from gmt to local time */
118 
119 /*
120  * True if  "l" bytes of "var" were captured.
121  *
122  * The "snapend - (l) <= snapend" checks to make sure "l" isn't so large
123  * that "snapend - (l)" underflows.
124  *
125  * The check is for <= rather than < because "l" might be 0.
126  */
127 #define TTEST2(var, l) (snapend - (l) <= snapend && \
128 			(const u_char *)&(var) <= snapend - (l))
129 
130 /* True if "var" was captured */
131 #define TTEST(var) TTEST2(var, sizeof(var))
132 
133 /* Bail if "l" bytes of "var" were not captured */
134 #define TCHECK2(var, l) if (!TTEST2(var, l)) goto trunc
135 
136 /* Bail if "var" was not captured */
137 #define TCHECK(var) TCHECK2(var, sizeof(var))
138 
139 extern void ts_print(const struct timeval *);
140 extern void relts_print(int);
141 
142 extern int fn_print(const u_char *, const u_char *);
143 extern int fn_printn(const u_char *, u_int, const u_char *);
144 extern int fn_printzp(const u_char *, u_int, const u_char *);
145 extern int mask2plen(u_int32_t);
146 extern const char *tok2strary_internal(const char **, int, const char *, int);
147 #define	tok2strary(a,f,i) tok2strary_internal(a, sizeof(a)/sizeof(a[0]),f,i)
148 
149 extern const char *dnaddr_string(u_short);
150 
151 extern void error(const char *, ...)
152     __attribute__((noreturn, format (printf, 1, 2)));
153 extern void warning(const char *, ...) __attribute__ ((format (printf, 1, 2)));
154 
155 extern char *read_infile(char *);
156 extern char *copy_argv(char **);
157 
158 extern void safeputchar(int);
159 extern void safeputs(const char *, int);
160 
161 extern const char *isonsap_string(const u_char *, register u_int);
162 extern const char *protoid_string(const u_char *);
163 extern const char *ipxsap_string(u_short);
164 extern const char *dnname_string(u_short);
165 extern const char *dnnum_string(u_short);
166 
167 /* The printer routines. */
168 
169 #include <pcap.h>
170 
171 extern int print_unknown_data(const u_char *, const char *,int);
172 extern void ascii_print(const u_char *, u_int);
173 extern void hex_and_ascii_print_with_offset(const char *, const u_char *,
174 	u_int, u_int);
175 extern void hex_and_ascii_print(const char *, const u_char *, u_int);
176 extern void hex_print_with_offset(const char *, const u_char *, u_int, u_int);
177 extern void hex_print(const char *, const u_char *, u_int);
178 extern void telnet_print(const u_char *, u_int);
179 extern int ether_encap_print(u_short, const u_char *, u_int, u_int, u_short *);
180 extern int llc_print(const u_char *, u_int, u_int, const u_char *,
181 	const u_char *, u_short *);
182 extern int snap_print(const u_char *, u_int, u_int, u_short *, u_int);
183 extern void aarp_print(const u_char *, u_int);
184 extern void aodv_print(const u_char *, u_int, int);
185 extern void atalk_print(const u_char *, u_int);
186 extern void atm_print(u_int, u_int, u_int, const u_char *, u_int, u_int);
187 extern u_int atm_if_print(const struct pcap_pkthdr *, const u_char *);
188 extern u_int sunatm_if_print(const struct pcap_pkthdr *, const u_char *);
189 extern int oam_print(const u_char *, u_int, u_int);
190 extern void bootp_print(const u_char *, u_int);
191 extern void bgp_print(const u_char *, int);
192 extern void beep_print(const u_char *, u_int);
193 extern void cnfp_print(const u_char *, const u_char *);
194 extern void decnet_print(const u_char *, u_int, u_int);
195 extern void default_print(const u_char *, u_int);
196 extern void dvmrp_print(const u_char *, u_int);
197 extern void egp_print(const u_char *, u_int);
198 extern u_int enc_if_print(const struct pcap_pkthdr *, const u_char *);
199 extern u_int pflog_if_print(const struct pcap_pkthdr *, const u_char *);
200 extern u_int arcnet_if_print(const struct pcap_pkthdr *, const u_char *);
201 extern u_int arcnet_linux_if_print(const struct pcap_pkthdr *, const u_char *);
202 extern void ether_print(const u_char *, u_int, u_int);
203 extern u_int ether_if_print(const struct pcap_pkthdr *, const u_char *);
204 extern u_int token_print(const u_char *, u_int, u_int);
205 extern u_int token_if_print(const struct pcap_pkthdr *, const u_char *);
206 extern void fddi_print(const u_char *, u_int, u_int);
207 extern u_int fddi_if_print(const struct pcap_pkthdr *, const u_char *);
208 extern u_int fr_if_print(const struct pcap_pkthdr *, const u_char *);
209 extern u_int mfr_if_print(const struct pcap_pkthdr *, const u_char *);
210 extern u_int fr_print(register const u_char *, u_int);
211 extern u_int mfr_print(register const u_char *, u_int);
212 extern u_int ieee802_11_if_print(const struct pcap_pkthdr *, const u_char *);
213 extern u_int ieee802_11_radio_if_print(const struct pcap_pkthdr *,
214 	const u_char *);
215 extern u_int ap1394_if_print(const struct pcap_pkthdr *, const u_char *);
216 extern void gre_print(const u_char *, u_int);
217 extern void icmp_print(const u_char *, u_int, const u_char *, int);
218 extern void igmp_print(const u_char *, u_int);
219 extern void igrp_print(const u_char *, u_int, const u_char *);
220 extern void ipN_print(const u_char *, u_int);
221 extern u_int ipfc_if_print(const struct pcap_pkthdr *, const u_char *);
222 extern void ipx_print(const u_char *, u_int);
223 extern void isoclns_print(const u_char *, u_int, u_int);
224 extern void krb_print(const u_char *);
225 extern u_int llap_print(const u_char *, u_int);
226 extern u_int ltalk_if_print(const struct pcap_pkthdr *, const u_char *);
227 extern void msdp_print(const unsigned char *, u_int);
228 extern void nfsreply_print(const u_char *, u_int, const u_char *);
229 extern void nfsreq_print(const u_char *, u_int, const u_char *);
230 extern void ns_print(const u_char *, u_int, int);
231 extern void ntp_print(const u_char *, u_int);
232 extern u_int null_if_print(const struct pcap_pkthdr *, const u_char *);
233 extern void ospf_print(const u_char *, u_int, const u_char *);
234 extern void olsr_print (const u_char *, u_int);
235 extern void pimv1_print(const u_char *, u_int);
236 extern void cisco_autorp_print(const u_char *, u_int);
237 extern void rsvp_print(const u_char *, u_int);
238 extern void ldp_print(const u_char *, u_int);
239 extern void lmp_print(const u_char *, u_int);
240 extern void lspping_print(const u_char *, u_int);
241 extern void eigrp_print(const u_char *, u_int);
242 extern void mobile_print(const u_char *, u_int);
243 extern void pim_print(const u_char *, u_int);
244 extern u_int pppoe_print(const u_char *, u_int);
245 extern u_int ppp_print(register const u_char *, u_int);
246 extern u_int ppp_if_print(const struct pcap_pkthdr *, const u_char *);
247 extern u_int ppp_hdlc_if_print(const struct pcap_pkthdr *, const u_char *);
248 extern u_int ppp_bsdos_if_print(const struct pcap_pkthdr *, const u_char *);
249 extern u_int pppoe_if_print(const struct pcap_pkthdr *, const u_char *);
250 extern u_int prism_if_print(const struct pcap_pkthdr *, const u_char *);
251 extern void q933_print(const u_char *, u_int);
252 extern int vjc_print(register const char *, u_short);
253 extern u_int raw_if_print(const struct pcap_pkthdr *, const u_char *);
254 extern void rip_print(const u_char *, u_int);
255 extern u_int sl_if_print(const struct pcap_pkthdr *, const u_char *);
256 extern void lane_print(const u_char *, u_int, u_int);
257 extern u_int lane_if_print(const struct pcap_pkthdr *, const u_char *);
258 extern u_int cip_if_print(const struct pcap_pkthdr *, const u_char *);
259 extern u_int sl_bsdos_if_print(const struct pcap_pkthdr *, const u_char *);
260 extern u_int chdlc_if_print(const struct pcap_pkthdr *, const u_char *);
261 extern u_int chdlc_print(register const u_char *, u_int);
262 extern u_int juniper_atm1_print(const struct pcap_pkthdr *, const u_char *);
263 extern u_int juniper_atm2_print(const struct pcap_pkthdr *, const u_char *);
264 extern u_int juniper_mfr_print(const struct pcap_pkthdr *, register const u_char *);
265 extern u_int juniper_mlfr_print(const struct pcap_pkthdr *, const u_char *);
266 extern u_int juniper_mlppp_print(const struct pcap_pkthdr *, const u_char *);
267 extern u_int juniper_pppoe_print(const struct pcap_pkthdr *, const u_char *);
268 extern u_int juniper_pppoe_atm_print(const struct pcap_pkthdr *, const u_char *);
269 extern u_int juniper_ggsn_print(const struct pcap_pkthdr *, const u_char *);
270 extern u_int juniper_es_print(const struct pcap_pkthdr *, const u_char *);
271 extern u_int juniper_monitor_print(const struct pcap_pkthdr *, const u_char *);
272 extern u_int juniper_services_print(const struct pcap_pkthdr *, const u_char *);
273 extern u_int juniper_ether_print(const struct pcap_pkthdr *, const u_char *);
274 extern u_int juniper_ppp_print(const struct pcap_pkthdr *, const u_char *);
275 extern u_int juniper_frelay_print(const struct pcap_pkthdr *, const u_char *);
276 extern u_int juniper_chdlc_print(const struct pcap_pkthdr *, const u_char *);
277 extern u_int sll_if_print(const struct pcap_pkthdr *, const u_char *);
278 extern void snmp_print(const u_char *, u_int);
279 extern void sunrpcrequest_print(const u_char *, u_int, const u_char *);
280 extern u_int symantec_if_print(const struct pcap_pkthdr *, const u_char *);
281 extern void tcp_print(const u_char *, u_int, const u_char *, int);
282 extern void tftp_print(const u_char *, u_int);
283 extern void timed_print(const u_char *);
284 extern void udp_print(const u_char *, u_int, const u_char *, int);
285 extern void wb_print(const void *, u_int);
286 extern int ah_print(register const u_char *);
287 extern int ipcomp_print(register const u_char *, int *);
288 extern void rx_print(register const u_char *, int, int, int, u_char *);
289 extern void netbeui_print(u_short, const u_char *, int);
290 extern void ipx_netbios_print(const u_char *, u_int);
291 extern void nbt_tcp_print(const u_char *, int);
292 extern void nbt_udp137_print(const u_char *, int);
293 extern void nbt_udp138_print(const u_char *, int);
294 extern char *smb_errstr(int, int);
295 extern const char *nt_errstr(u_int32_t);
296 extern void print_data(const unsigned char *, int);
297 extern void l2tp_print(const u_char *, u_int);
298 extern void vrrp_print(const u_char *, u_int, int);
299 extern void slow_print(const u_char *, u_int);
300 extern void pgm_print(const u_char *, u_int, const u_char *);
301 extern void cdp_print(const u_char *, u_int, u_int);
302 extern void stp_print(const u_char *, u_int);
303 extern void radius_print(const u_char *, u_int);
304 extern void lwres_print(const u_char *, u_int);
305 extern void pptp_print(const u_char *);
306 extern void dccp_print(const u_char *, const u_char *, u_int);
307 extern void sctp_print(const u_char *, const u_char *, u_int);
308 extern void mpls_print(const u_char *, u_int);
309 extern void mpls_lsp_ping_print(const u_char *, u_int);
310 extern void zephyr_print(const u_char *, int);
311 extern void hsrp_print(const u_char *, u_int);
312 extern void bfd_print(const u_char *, u_int, u_int);
313 extern void sip_print(const u_char *, u_int);
314 extern void syslog_print(const u_char *, u_int);
315 
316 #ifdef INET6
317 extern void ip6_print(const u_char *, u_int);
318 extern void ip6_opt_print(const u_char *, int);
319 extern int hbhopt_print(const u_char *);
320 extern int dstopt_print(const u_char *);
321 extern int frag6_print(const u_char *, const u_char *);
322 extern int mobility_print(const u_char *, const u_char *);
323 extern void icmp6_print(const u_char *, u_int, const u_char *, int);
324 extern void ripng_print(const u_char *, unsigned int);
325 extern int rt6_print(const u_char *, const u_char *);
326 extern void ospf6_print(const u_char *, u_int);
327 extern void dhcp6_print(const u_char *, u_int);
328 #endif /*INET6*/
329 extern u_short in_cksum(const u_short *, register u_int, int);
330 extern u_int16_t in_cksum_shouldbe(u_int16_t, u_int16_t);
331 
332 #ifndef HAVE_BPF_DUMP
333 struct bpf_program;
334 
335 extern void bpf_dump(struct bpf_program *, int);
336 
337 #endif
338 
339 #include "netdissect.h"
340 
341 /* forward compatibility */
342 
343 extern netdissect_options *gndo;
344 
345 #define eflag gndo->ndo_eflag
346 #define fflag gndo->ndo_fflag
347 #define nflag gndo->ndo_nflag
348 #define Nflag gndo->ndo_Nflag
349 #define Oflag gndo->ndo_Oflag
350 #define pflag gndo->ndo_pflag
351 #define qflag gndo->ndo_qflag
352 #define Rflag gndo->ndo_Rflag
353 #define sflag gndo->ndo_sflag
354 #define Sflag gndo->ndo_Sflag
355 #define tflag gndo->ndo_tflag
356 #define Uflag gndo->ndo_Uflag
357 #define uflag gndo->ndo_uflag
358 #define vflag gndo->ndo_vflag
359 #define xflag gndo->ndo_xflag
360 #define Xflag gndo->ndo_Xflag
361 #define Cflag gndo->ndo_Cflag
362 #define Aflag gndo->ndo_Aflag
363 #define suppress_default_print gndo->ndo_suppress_default_print
364 #define packettype gndo->ndo_packettype
365 #define tcpmd5secret gndo->ndo_tcpmd5secret
366 #define Wflag gndo->ndo_Wflag
367 #define WflagChars gndo->ndo_WflagChars
368 #define Cflag_count gndo->ndo_Cflag_count
369 #define snaplen     gndo->ndo_snaplen
370 #define snapend     gndo->ndo_snapend
371 
372