1 /*
2 * Copyright (c) 1993, 1994, 1995, 1996, 1997, 1998
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 the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the Computer Systems
16 * Engineering Group at Lawrence Berkeley Laboratory.
17 * 4. Neither the name of the University nor of the Laboratory may be used
18 * to endorse or promote products derived from this software without
19 * specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 */
33
34 #ifdef HAVE_CONFIG_H
35 #include <config.h>
36 #endif
37
38 #include <netdissect-stdinc.h>
39
40 #include <pcap.h>
41 #include <string.h>
42
43 #include "pcap-missing.h"
44 #include "ascii_strcasecmp.h"
45
46 struct dlt_choice {
47 const char *name;
48 const char *description;
49 int dlt;
50 };
51
52 #define DLT_CHOICE(code, description) { #code, description, code }
53 #define DLT_CHOICE_SENTINEL { NULL, NULL, 0 }
54
55 static struct dlt_choice dlt_choices[] = {
56 DLT_CHOICE(DLT_NULL, "BSD loopback"),
57 DLT_CHOICE(DLT_EN10MB, "Ethernet"),
58 DLT_CHOICE(DLT_IEEE802, "Token ring"),
59 DLT_CHOICE(DLT_ARCNET, "ARCNET"),
60 DLT_CHOICE(DLT_SLIP, "SLIP"),
61 DLT_CHOICE(DLT_PPP, "PPP"),
62 DLT_CHOICE(DLT_FDDI, "FDDI"),
63 DLT_CHOICE(DLT_ATM_RFC1483, "RFC 1483 IP-over-ATM"),
64 DLT_CHOICE(DLT_RAW, "Raw IP"),
65 #ifdef DLT_SLIP_BSDOS
66 DLT_CHOICE(DLT_SLIP_BSDOS, "BSD/OS SLIP"),
67 #endif
68 #ifdef DLT_PPP_BSDOS
69 DLT_CHOICE(DLT_PPP_BSDOS, "BSD/OS PPP"),
70 #endif
71 #ifdef DLT_ATM_CLIP
72 DLT_CHOICE(DLT_ATM_CLIP, "Linux Classical IP-over-ATM"),
73 #endif
74 #ifdef DLT_PPP_SERIAL
75 DLT_CHOICE(DLT_PPP_SERIAL, "PPP over serial"),
76 #endif
77 #ifdef DLT_PPP_ETHER
78 DLT_CHOICE(DLT_PPP_ETHER, "PPPoE"),
79 #endif
80 #ifdef DLT_C_HDLC
81 DLT_CHOICE(DLT_C_HDLC, "Cisco HDLC"),
82 #endif
83 #ifdef DLT_IEEE802_11
84 DLT_CHOICE(DLT_IEEE802_11, "802.11"),
85 #endif
86 #ifdef DLT_FRELAY
87 DLT_CHOICE(DLT_FRELAY, "Frame Relay"),
88 #endif
89 #ifdef DLT_LOOP
90 DLT_CHOICE(DLT_LOOP, "OpenBSD loopback"),
91 #endif
92 #ifdef DLT_ENC
93 DLT_CHOICE(DLT_ENC, "OpenBSD encapsulated IP"),
94 #endif
95 #ifdef DLT_LINUX_SLL
96 DLT_CHOICE(DLT_LINUX_SLL, "Linux cooked"),
97 #endif
98 #ifdef DLT_LTALK
99 DLT_CHOICE(DLT_LTALK, "Localtalk"),
100 #endif
101 #ifdef DLT_PFLOG
102 DLT_CHOICE(DLT_PFLOG, "OpenBSD pflog file"),
103 #endif
104 #ifdef DLT_PRISM_HEADER
105 DLT_CHOICE(DLT_PRISM_HEADER, "802.11 plus Prism header"),
106 #endif
107 #ifdef DLT_IP_OVER_FC
108 DLT_CHOICE(DLT_IP_OVER_FC, "RFC 2625 IP-over-Fibre Channel"),
109 #endif
110 #ifdef DLT_SUNATM
111 DLT_CHOICE(DLT_SUNATM, "Sun raw ATM"),
112 #endif
113 #ifdef DLT_IEEE802_11_RADIO
114 DLT_CHOICE(DLT_IEEE802_11_RADIO, "802.11 plus radio information header"),
115 #endif
116 #ifdef DLT_ARCNET_LINUX
117 DLT_CHOICE(DLT_ARCNET_LINUX, "Linux ARCNET"),
118 #endif
119 #ifdef DLT_LINUX_IRDA
120 DLT_CHOICE(DLT_LINUX_IRDA, "Linux IrDA"),
121 #endif
122 #ifdef DLT_CIP
123 DLT_CHOICE(DLT_CIP, "Linux Classical IP-over-ATM"),
124 #endif
125 #ifdef DLT_HDLC
126 DLT_CHOICE(DLT_HDLC, "Cisco HDLC"),
127 #endif
128 DLT_CHOICE_SENTINEL
129 };
130
131 #ifndef HAVE_PCAP_DATALINK_NAME_TO_VAL
132 int
pcap_datalink_name_to_val(const char * name)133 pcap_datalink_name_to_val(const char *name)
134 {
135 int i;
136
137 for (i = 0; dlt_choices[i].name != NULL; i++) {
138 if (ascii_strcasecmp(dlt_choices[i].name + sizeof("DLT_") - 1,
139 name) == 0)
140 return (dlt_choices[i].dlt);
141 }
142 return (-1);
143 }
144
145 const char *
pcap_datalink_val_to_name(int dlt)146 pcap_datalink_val_to_name(int dlt)
147 {
148 int i;
149
150 for (i = 0; dlt_choices[i].name != NULL; i++) {
151 if (dlt_choices[i].dlt == dlt)
152 return (dlt_choices[i].name + sizeof("DLT_") - 1);
153 }
154 return (NULL);
155 }
156 #endif
157
158 const char *
pcap_datalink_val_to_description(int dlt)159 pcap_datalink_val_to_description(int dlt)
160 {
161 int i;
162
163 for (i = 0; dlt_choices[i].name != NULL; i++) {
164 if (dlt_choices[i].dlt == dlt)
165 return (dlt_choices[i].description);
166 }
167 return (NULL);
168 }
169