1 /*
2 * Copyright (c) 1990, 1992, 1993, 1994, 1995, 1996, 1997
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 #include "extract.h"
23
24 #ifdef HAVE_CASPER
25 #include <libcasper.h>
26 extern cap_channel_t *capdns;
27 #endif
28
29 /*
30 * Definition to let us compile most of the IPv6 code even on systems
31 * without IPv6 support.
32 */
33 #ifndef INET6_ADDRSTRLEN
34 #define INET6_ADDRSTRLEN 46
35 #endif
36
37 /* Name to address translation routines. */
38
39 enum {
40 LINKADDR_ETHER,
41 LINKADDR_FRELAY,
42 LINKADDR_IEEE1394,
43 LINKADDR_ATM,
44 LINKADDR_OTHER
45 };
46
47 #define BUFSIZE 128
48
49 extern const char *linkaddr_string(netdissect_options *, const uint8_t *, const unsigned int, const unsigned int);
50 extern const char *etheraddr_string(netdissect_options *, const uint8_t *);
51 extern const char *le64addr_string(netdissect_options *, const uint8_t *);
52 extern const char *tcpport_string(netdissect_options *, u_short);
53 extern const char *udpport_string(netdissect_options *, u_short);
54 extern const char *isonsap_string(netdissect_options *, const uint8_t *, u_int);
55 extern const char *dnaddr_string(netdissect_options *, u_short);
56 extern const char *ipxsap_string(netdissect_options *, u_short);
57 extern const char *ipaddr_string(netdissect_options *, const u_char *);
58 extern const char *ip6addr_string(netdissect_options *, const u_char *);
59 extern const char *intoa(uint32_t);
60
61 extern void init_addrtoname(netdissect_options *, uint32_t, uint32_t);
62 extern struct hnamemem *newhnamemem(netdissect_options *);
63 extern struct h6namemem *newh6namemem(netdissect_options *);
64 extern const char * ieee8021q_tci_string(const uint16_t);
65
66 /* macro(s) and inline function(s) with setjmp/longjmp logic to call
67 * the X_string() function(s) after bounds checking.
68 * The macro(s) must be used on a packet buffer pointer.
69 */
70
71 static inline const char *
get_linkaddr_string(netdissect_options * ndo,const uint8_t * p,const unsigned int type,const unsigned int len)72 get_linkaddr_string(netdissect_options *ndo, const uint8_t *p,
73 const unsigned int type, const unsigned int len)
74 {
75 if (!ND_TTEST_LEN(p, len))
76 nd_trunc_longjmp(ndo);
77 return linkaddr_string(ndo, p, type, len);
78 }
79
80 static inline const char *
get_etheraddr_string(netdissect_options * ndo,const uint8_t * p)81 get_etheraddr_string(netdissect_options *ndo, const uint8_t *p)
82 {
83 if (!ND_TTEST_LEN(p, MAC_ADDR_LEN))
84 nd_trunc_longjmp(ndo);
85 return etheraddr_string(ndo, p);
86 }
87
88 static inline const char *
get_le64addr_string(netdissect_options * ndo,const u_char * p)89 get_le64addr_string(netdissect_options *ndo, const u_char *p)
90 {
91 if (!ND_TTEST_8(p))
92 nd_trunc_longjmp(ndo);
93 return le64addr_string(ndo, p);
94 }
95
96 static inline const char *
get_isonsap_string(netdissect_options * ndo,const uint8_t * nsap,u_int nsap_length)97 get_isonsap_string(netdissect_options *ndo, const uint8_t *nsap,
98 u_int nsap_length)
99 {
100 if (!ND_TTEST_LEN(nsap, nsap_length))
101 nd_trunc_longjmp(ndo);
102 return isonsap_string(ndo, nsap, nsap_length);
103 }
104
105 static inline const char *
get_ipaddr_string(netdissect_options * ndo,const u_char * p)106 get_ipaddr_string(netdissect_options *ndo, const u_char *p)
107 {
108 if (!ND_TTEST_4(p))
109 nd_trunc_longjmp(ndo);
110 return ipaddr_string(ndo, p);
111 }
112
113 static inline const char *
get_ip6addr_string(netdissect_options * ndo,const u_char * p)114 get_ip6addr_string(netdissect_options *ndo, const u_char *p)
115 {
116 if (!ND_TTEST_16(p))
117 nd_trunc_longjmp(ndo);
118 return ip6addr_string(ndo, p);
119 }
120
121 #define GET_LINKADDR_STRING(p, type, len) get_linkaddr_string(ndo, (const u_char *)(p), type, len)
122 #define GET_ETHERADDR_STRING(p) get_etheraddr_string(ndo, (const u_char *)(p))
123 #define GET_LE64ADDR_STRING(p) get_le64addr_string(ndo, (const u_char *)(p))
124 #define GET_ISONSAP_STRING(nsap, nsap_length) get_isonsap_string(ndo, (const u_char *)(nsap), nsap_length)
125 #define GET_IPADDR_STRING(p) get_ipaddr_string(ndo, (const u_char *)(p))
126 #define GET_IP6ADDR_STRING(p) get_ip6addr_string(ndo, (const u_char *)(p))
127