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3 * The Regents of the University of California. All rights reserved.
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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
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.
21 * Hacked version of print-ether.c Larry Lile <lile@stdio.com>
24 static const char rcsid[] =
28 #include <sys/param.h>
30 #include <sys/socket.h>
40 #include <netinet/in.h>
41 #include <net/ethernet.h>
42 #include <netinet/in_systm.h>
43 #include <netinet/ip.h>
44 #include <netinet/ip_var.h>
45 #include <netinet/udp.h>
46 #include <netinet/udp_var.h>
47 #include <netinet/tcp.h>
48 #include <netinet/tcpip.h>
53 #include "interface.h"
54 #include "addrtoname.h"
55 #include "ethertype.h"
58 const u_char *packetp;
59 const u_char *snapend;
62 token_print(register const u_char *bp, u_int length)
64 register const struct token_header *tp;
65 register const struct llc *lp;
68 tp = (const struct token_header *)bp;
69 lp = (struct llc *)(bp + TOKEN_HDR_LEN);
71 lp = (struct llc *)(bp + TOKEN_HDR_LEN + RIF_LENGTH);
74 * Ethertype on ethernet is a short, but ethertype in an llc-snap has
75 * been defined as 2 u_chars. This is a stupid little hack to fix
76 * this for now but something better should be done using ntohs()
79 ether_type = ((u_short)lp->ethertype[1] << 16) | lp->ethertype[0];
82 (void)printf("%s %s %d: ",
83 etheraddr_string(ESRC(tp)),
84 etheraddr_string(EDST(tp)),
87 (void)printf("%s %s %s %d: ",
88 etheraddr_string(ESRC(tp)),
89 etheraddr_string(EDST(tp)),
90 etherproto_string(ether_type),
95 * This is the top level routine of the printer. 'p' is the points
96 * to the ether header of the packet, 'tvp' is the timestamp,
97 * 'length' is the length of the packet off the wire, and 'caplen'
98 * is the number of bytes actually captured.
101 token_if_print(u_char *user, const struct pcap_pkthdr *h, const u_char *p)
103 u_int caplen = h->caplen;
104 u_int length = h->len;
105 struct token_header *tp;
107 extern u_short extracted_ethertype;
111 tp = (struct token_header *)p;
115 if (caplen < TOKEN_HDR_LEN) {
116 printf("[|token-ring]");
121 token_print(p, length);
124 * Some printers want to get back at the ethernet addresses,
125 * and/or check that they're not walking off the end of the packet.
126 * Rather than pass them all the way down, we set these globals.
128 tp = (struct token_header *)p;
130 /* Adjust for source routing information in the MAC header */
131 if (IS_SOURCE_ROUTED) {
132 route_len = RIF_LENGTH;
135 /* Set pointer to llc header, adjusted for routing information */
136 lp = (struct llc *)(p + TOKEN_HDR_LEN + route_len);
139 snapend = p + caplen;
141 /* Skip over token ring MAC header */
142 length -= TOKEN_HDR_LEN + route_len;
143 caplen -= TOKEN_HDR_LEN + route_len;
144 p += TOKEN_HDR_LEN + route_len;
146 ether_type = ntohs((int)lp->ethertype);
148 extracted_ethertype = 0;
149 /* Try to print the LLC-layer header & higher layers */
150 if (llc_print(p, length, caplen, ESRC(tp), EDST(tp)) == 0) {
151 /* ether_type not known, print raw packet */
153 token_print((u_char *)tp, length);
154 if (extracted_ethertype) {
156 etherproto_string(htons(extracted_ethertype)));
158 if (!xflag && !qflag)
159 default_print(p, caplen);
162 default_print(p, caplen);