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1 office 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  
22 #ifndef tcpdump_interface_h
23 #define tcpdump_interface_h
24  
25 #ifdef HAVE_OS_PROTO_H
26 #include "os-proto.h"
27 #endif
28  
29 /* snprintf et al */
30  
31 #include <stdarg.h>
32  
33 #if HAVE_STDINT_H
34 #include <stdint.h>
35 #endif
36  
37 #if !defined(HAVE_SNPRINTF)
38 int snprintf(char *, size_t, const char *, ...)
39 #ifdef __ATTRIBUTE___FORMAT_OK
40 __attribute__((format(printf, 3, 4)))
41 #endif /* __ATTRIBUTE___FORMAT_OK */
42 ;
43 #endif /* !defined(HAVE_SNPRINTF) */
44  
45 #if !defined(HAVE_VSNPRINTF)
46 int vsnprintf(char *, size_t, const char *, va_list)
47 #ifdef __ATTRIBUTE___FORMAT_OK
48 __attribute__((format(printf, 3, 0)))
49 #endif /* __ATTRIBUTE___FORMAT_OK */
50 ;
51 #endif /* !defined(HAVE_VSNPRINTF) */
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 #define PT_CARP 10 /* Common Address Redundancy Protocol */
78 #define PT_RADIUS 11 /* RADIUS authentication Protocol */
79 #define PT_ZMTP1 12 /* ZeroMQ Message Transport Protocol 1.0 */
80 #define PT_VXLAN 13 /* Virtual eXtensible Local Area Network */
81 #define PT_PGM 14 /* [UDP-encapsulated] Pragmatic General Multicast */
82 #define PT_PGM_ZMTP1 15 /* ZMTP/1.0 inside PGM (native or UDP-encapsulated) */
83 #define PT_LMP 16 /* Link Management Protocol */
84  
85 #define ESRC(ep) ((ep)->ether_shost)
86 #define EDST(ep) ((ep)->ether_dhost)
87  
88 #ifndef NTOHL
89 #define NTOHL(x) (x) = ntohl(x)
90 #define NTOHS(x) (x) = ntohs(x)
91 #define HTONL(x) (x) = htonl(x)
92 #define HTONS(x) (x) = htons(x)
93 #endif
94 #endif
95  
96 extern char *program_name; /* used to generate self-identifying messages */
97  
98 extern int32_t thiszone; /* seconds offset from gmt to local time */
99  
100 /*
101 * True if "l" bytes of "var" were captured.
102 *
103 * The "snapend - (l) <= snapend" checks to make sure "l" isn't so large
104 * that "snapend - (l)" underflows.
105 *
106 * The check is for <= rather than < because "l" might be 0.
107 *
108 * We cast the pointers to uintptr_t to make sure that the compiler
109 * doesn't optimize away any of these tests (which it is allowed to
110 * do, as adding an integer to, or subtracting an integer from, a
111 * pointer assumes that the pointer is a pointer to an element of an
112 * array and that the result of the addition or subtraction yields a
113 * pointer to another member of the array, so that, for example, if
114 * you subtract a positive integer from a pointer, the result is
115 * guaranteed to be less than the original pointer value). See
116 *
117 * http://www.kb.cert.org/vuls/id/162289
118 */
119 #define TTEST2(var, l) \
120 ((uintptr_t)snapend - (l) <= (uintptr_t)snapend && \
121 (uintptr_t)&(var) <= (uintptr_t)snapend - (l))
122  
123 /* True if "var" was captured */
124 #define TTEST(var) TTEST2(var, sizeof(var))
125  
126 /* Bail if "l" bytes of "var" were not captured */
127 #define TCHECK2(var, l) if (!TTEST2(var, l)) goto trunc
128  
129 /* Bail if "var" was not captured */
130 #define TCHECK(var) TCHECK2(var, sizeof(var))
131  
132 extern int mask2plen(uint32_t);
133 extern const char *tok2strary_internal(const char **, int, const char *, int);
134 #define tok2strary(a,f,i) tok2strary_internal(a, sizeof(a)/sizeof(a[0]),f,i)
135  
136 extern void error(const char *, ...)
137 __attribute__((noreturn))
138 #ifdef __ATTRIBUTE___FORMAT_OK
139 __attribute__((format (printf, 1, 2)))
140 #endif /* __ATTRIBUTE___FORMAT_OK */
141 ;
142 extern void warning(const char *, ...)
143 #ifdef __ATTRIBUTE___FORMAT_OK
144 __attribute__((format (printf, 1, 2)))
145 #endif /* __ATTRIBUTE___FORMAT_OK */
146 ;
147  
148 extern char *read_infile(char *);
149 extern char *copy_argv(char **);
150  
151 extern const char *dnname_string(u_short);
152 extern const char *dnnum_string(u_short);
153  
154 /* checksum routines */
155 extern void init_checksum(void);
156 extern uint16_t verify_crc10_cksum(uint16_t, const u_char *, int);
157 extern uint16_t create_osi_cksum(const uint8_t *, int, int);
158  
159 /* The printer routines. */
160  
161 #include <pcap.h>
162  
163 extern char *smb_errstr(int, int);
164 extern const char *nt_errstr(uint32_t);
165  
166 #ifdef INET6
167 extern int mask62plen(const u_char *);
168 #endif /*INET6*/
169  
170 struct cksum_vec {
171 const uint8_t *ptr;
172 int len;
173 };
174 extern uint16_t in_cksum(const struct cksum_vec *, int);
175 extern uint16_t in_cksum_shouldbe(uint16_t, uint16_t);
176  
177 #ifndef HAVE_BPF_DUMP
178 struct bpf_program;
179  
180 extern void bpf_dump(const struct bpf_program *, int);
181  
182 #endif
183  
184 #include "netdissect.h"
185  
186 /* forward compatibility */
187  
188 #ifndef NETDISSECT_REWORKED
189 extern netdissect_options *gndo;
190  
191 #define bflag gndo->ndo_bflag
192 #define eflag gndo->ndo_eflag
193 #define fflag gndo->ndo_fflag
194 #define jflag gndo->ndo_jflag
195 #define Kflag gndo->ndo_Kflag
196 #define nflag gndo->ndo_nflag
197 #define Nflag gndo->ndo_Nflag
198 #define Oflag gndo->ndo_Oflag
199 #define pflag gndo->ndo_pflag
200 #define qflag gndo->ndo_qflag
201 #define Rflag gndo->ndo_Rflag
202 #define sflag gndo->ndo_sflag
203 #define Sflag gndo->ndo_Sflag
204 #define tflag gndo->ndo_tflag
205 #define Uflag gndo->ndo_Uflag
206 #define uflag gndo->ndo_uflag
207 #define vflag gndo->ndo_vflag
208 #define xflag gndo->ndo_xflag
209 #define Xflag gndo->ndo_Xflag
210 #define Cflag gndo->ndo_Cflag
211 #define Gflag gndo->ndo_Gflag
212 #define Aflag gndo->ndo_Aflag
213 #define Bflag gndo->ndo_Bflag
214 #define Iflag gndo->ndo_Iflag
215 #define suppress_default_print gndo->ndo_suppress_default_print
216 #define packettype gndo->ndo_packettype
217 #define sigsecret gndo->ndo_sigsecret
218 #define Wflag gndo->ndo_Wflag
219 #define WflagChars gndo->ndo_WflagChars
220 #define Cflag_count gndo->ndo_Cflag_count
221 #define Gflag_count gndo->ndo_Gflag_count
222 #define Gflag_time gndo->ndo_Gflag_time
223 #define Hflag gndo->ndo_Hflag
224 #define snaplen gndo->ndo_snaplen
225 #define snapend gndo->ndo_snapend
226  
227 extern void default_print(const u_char *, u_int);
228  
229 #endif