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 #include <config.h>
35
36 #include <netdissect-stdinc.h>
37
38 #include <pcap.h>
39 #include <string.h>
40
41 #include "pcap-missing.h"
42 #include "ascii_strcasecmp.h"
43
44 struct dlt_choice {
45 const char *name;
46 const char *description;
47 int dlt;
48 };
49
50 #define DLT_CHOICE(code, description) { #code, description, code }
51 #define DLT_CHOICE_SENTINEL { NULL, NULL, 0 }
52
53 static struct dlt_choice dlt_choices[] = {
54 DLT_CHOICE(DLT_NULL, "BSD loopback"),
55 DLT_CHOICE(DLT_EN10MB, "Ethernet"),
56 DLT_CHOICE(DLT_IEEE802, "Token ring"),
57 DLT_CHOICE(DLT_ARCNET, "ARCNET"),
58 DLT_CHOICE(DLT_SLIP, "SLIP"),
59 DLT_CHOICE(DLT_PPP, "PPP"),
60 DLT_CHOICE(DLT_FDDI, "FDDI"),
61 DLT_CHOICE(DLT_ATM_RFC1483, "RFC 1483 IP-over-ATM"),
62 DLT_CHOICE(DLT_RAW, "Raw IP"),
63 #ifdef DLT_SLIP_BSDOS
64 DLT_CHOICE(DLT_SLIP_BSDOS, "BSD/OS SLIP"),
65 #endif
66 #ifdef DLT_PPP_BSDOS
67 DLT_CHOICE(DLT_PPP_BSDOS, "BSD/OS PPP"),
68 #endif
69 #ifdef DLT_ATM_CLIP
70 DLT_CHOICE(DLT_ATM_CLIP, "Linux Classical IP-over-ATM"),
71 #endif
72 #ifdef DLT_PPP_SERIAL
73 DLT_CHOICE(DLT_PPP_SERIAL, "PPP over serial"),
74 #endif
75 #ifdef DLT_PPP_ETHER
76 DLT_CHOICE(DLT_PPP_ETHER, "PPPoE"),
77 #endif
78 #ifdef DLT_C_HDLC
79 DLT_CHOICE(DLT_C_HDLC, "Cisco HDLC"),
80 #endif
81 #ifdef DLT_IEEE802_11
82 DLT_CHOICE(DLT_IEEE802_11, "802.11"),
83 #endif
84 #ifdef DLT_FRELAY
85 DLT_CHOICE(DLT_FRELAY, "Frame Relay"),
86 #endif
87 #ifdef DLT_LOOP
88 DLT_CHOICE(DLT_LOOP, "OpenBSD loopback"),
89 #endif
90 #ifdef DLT_ENC
91 DLT_CHOICE(DLT_ENC, "OpenBSD encapsulated IP"),
92 #endif
93 #ifdef DLT_LINUX_SLL
94 DLT_CHOICE(DLT_LINUX_SLL, "Linux cooked"),
95 #endif
96 #ifdef DLT_LTALK
97 DLT_CHOICE(DLT_LTALK, "Localtalk"),
98 #endif
99 #ifdef DLT_PFLOG
100 DLT_CHOICE(DLT_PFLOG, "OpenBSD pflog file"),
101 #endif
102 #ifdef DLT_PRISM_HEADER
103 DLT_CHOICE(DLT_PRISM_HEADER, "802.11 plus Prism header"),
104 #endif
105 #ifdef DLT_IP_OVER_FC
106 DLT_CHOICE(DLT_IP_OVER_FC, "RFC 2625 IP-over-Fibre Channel"),
107 #endif
108 #ifdef DLT_SUNATM
109 DLT_CHOICE(DLT_SUNATM, "Sun raw ATM"),
110 #endif
111 #ifdef DLT_IEEE802_11_RADIO
112 DLT_CHOICE(DLT_IEEE802_11_RADIO, "802.11 plus radio information header"),
113 #endif
114 #ifdef DLT_ARCNET_LINUX
115 DLT_CHOICE(DLT_ARCNET_LINUX, "Linux ARCNET"),
116 #endif
117 #ifdef DLT_LINUX_IRDA
118 DLT_CHOICE(DLT_LINUX_IRDA, "Linux IrDA"),
119 #endif
120 #ifdef DLT_CIP
121 DLT_CHOICE(DLT_CIP, "Linux Classical IP-over-ATM"),
122 #endif
123 #ifdef DLT_HDLC
124 DLT_CHOICE(DLT_HDLC, "Cisco HDLC"),
125 #endif
126 DLT_CHOICE_SENTINEL
127 };
128
129 #ifndef HAVE_PCAP_DATALINK_NAME_TO_VAL
130 int
pcap_datalink_name_to_val(const char * name)131 pcap_datalink_name_to_val(const char *name)
132 {
133 int i;
134
135 for (i = 0; dlt_choices[i].name != NULL; i++) {
136 if (ascii_strcasecmp(dlt_choices[i].name + sizeof("DLT_") - 1,
137 name) == 0)
138 return (dlt_choices[i].dlt);
139 }
140 return (-1);
141 }
142
143 const char *
pcap_datalink_val_to_name(int dlt)144 pcap_datalink_val_to_name(int dlt)
145 {
146 int i;
147
148 for (i = 0; dlt_choices[i].name != NULL; i++) {
149 if (dlt_choices[i].dlt == dlt)
150 return (dlt_choices[i].name + sizeof("DLT_") - 1);
151 }
152 return (NULL);
153 }
154 #endif
155
156 const char *
pcap_datalink_val_to_description(int dlt)157 pcap_datalink_val_to_description(int dlt)
158 {
159 int i;
160
161 for (i = 0; dlt_choices[i].name != NULL; i++) {
162 if (dlt_choices[i].dlt == dlt)
163 return (dlt_choices[i].description);
164 }
165 return (NULL);
166 }
167