xref: /freebsd/contrib/tcpdump/print-ipx.c (revision 41466b50c1d5bfd1cf6adaae547a579a75d7c04e)
1 /*
2  * Copyright (c) 1994, 1995, 1996
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  * Format and print Novell IPX packets.
22  * Contributed by Brad Parker (brad@fcr.com).
23  *
24  * $FreeBSD$
25  */
26 
27 #ifndef lint
28 static const char rcsid[] =
29     "@(#) $Header: /tcpdump/master/tcpdump/print-ipx.c,v 1.27 2000/09/29 04:58:41 guy Exp $";
30 #endif
31 
32 #ifdef HAVE_CONFIG_H
33 #include "config.h"
34 #endif
35 
36 #include <sys/param.h>
37 #include <sys/time.h>
38 #include <sys/socket.h>
39 
40 #include <netinet/in.h>
41 
42 #include <stdlib.h>
43 #include <stdio.h>
44 #include <string.h>
45 
46 #include "interface.h"
47 #include "addrtoname.h"
48 #include "ipx.h"
49 #include "extract.h"
50 
51 
52 static const char *ipxaddr_string(u_int32_t, const u_char *);
53 void ipx_decode(const struct ipxHdr *, const u_char *, u_int);
54 void ipx_sap_print(const u_short *, u_int);
55 void ipx_rip_print(const u_short *, u_int);
56 
57 /*
58  * Print IPX datagram packets.
59  */
60 void
61 ipx_print(const u_char *p, u_int length)
62 {
63 	const struct ipxHdr *ipx = (const struct ipxHdr *)p;
64 
65 	TCHECK(ipx->srcSkt);
66 	(void)printf("%s.%x > ",
67 		     ipxaddr_string(EXTRACT_32BITS(ipx->srcNet), ipx->srcNode),
68 		     EXTRACT_16BITS(&ipx->srcSkt));
69 
70 	(void)printf("%s.%x:",
71 		     ipxaddr_string(EXTRACT_32BITS(ipx->dstNet), ipx->dstNode),
72 		     EXTRACT_16BITS(&ipx->dstSkt));
73 
74 	/* take length from ipx header */
75 	TCHECK(ipx->length);
76 	length = EXTRACT_16BITS(&ipx->length);
77 
78 	ipx_decode(ipx, (u_char *)ipx + ipxSize, length - ipxSize);
79 	return;
80 trunc:
81 	printf("[|ipx %d]", length);
82 }
83 
84 static const char *
85 ipxaddr_string(u_int32_t net, const u_char *node)
86 {
87     static char line[256];
88 
89     snprintf(line, sizeof(line), "%x.%02x:%02x:%02x:%02x:%02x:%02x",
90 	    net, node[0], node[1], node[2], node[3], node[4], node[5]);
91 
92     return line;
93 }
94 
95 void
96 ipx_decode(const struct ipxHdr *ipx, const u_char *datap, u_int length)
97 {
98     register u_short dstSkt;
99 
100     dstSkt = EXTRACT_16BITS(&ipx->dstSkt);
101     switch (dstSkt) {
102       case IPX_SKT_NCP:
103 	(void)printf(" ipx-ncp %d", length);
104 	break;
105       case IPX_SKT_SAP:
106 	ipx_sap_print((u_short *)datap, length);
107 	break;
108       case IPX_SKT_RIP:
109 	ipx_rip_print((u_short *)datap, length);
110 	break;
111       case IPX_SKT_NETBIOS:
112 	(void)printf(" ipx-netbios %d", length);
113 	break;
114       case IPX_SKT_DIAGNOSTICS:
115 	(void)printf(" ipx-diags %d", length);
116 	break;
117       default:
118 	(void)printf(" ipx-#%x %d", dstSkt, length);
119 	break;
120     }
121 }
122 
123 void
124 ipx_sap_print(const u_short *ipx, u_int length)
125 {
126     int command, i;
127 
128     TCHECK(ipx[0]);
129     command = EXTRACT_16BITS(ipx);
130     ipx++;
131     length -= 2;
132 
133     switch (command) {
134       case 1:
135       case 3:
136 	if (command == 1)
137 	    (void)printf("ipx-sap-req");
138 	else
139 	    (void)printf("ipx-sap-nearest-req");
140 
141 	if (length > 0) {
142 	    TCHECK(ipx[1]);
143 	    (void)printf(" %x '", EXTRACT_16BITS(&ipx[0]));
144 	    fn_print((u_char *)&ipx[1], (u_char *)&ipx[1] + 48);
145 	    putchar('\'');
146 	}
147 	break;
148 
149       case 2:
150       case 4:
151 	if (command == 2)
152 	    (void)printf("ipx-sap-resp");
153 	else
154 	    (void)printf("ipx-sap-nearest-resp");
155 
156 	for (i = 0; i < 8 && length > 0; i++) {
157 	    TCHECK2(ipx[27], 1);
158 	    (void)printf(" %x '", EXTRACT_16BITS(&ipx[0]));
159 	    fn_print((u_char *)&ipx[1], (u_char *)&ipx[1] + 48);
160 	    printf("' addr %s",
161 		ipxaddr_string(EXTRACT_32BITS(&ipx[25]), (u_char *)&ipx[27]));
162 	    ipx += 32;
163 	    length -= 64;
164 	}
165 	break;
166       default:
167 	    (void)printf("ipx-sap-?%x", command);
168 	break;
169     }
170 	return;
171 trunc:
172 	printf("[|ipx %d]", length);
173 }
174 
175 void
176 ipx_rip_print(const u_short *ipx, u_int length)
177 {
178     int command, i;
179 
180     TCHECK(ipx[0]);
181     command = EXTRACT_16BITS(ipx);
182     ipx++;
183     length -= 2;
184 
185     switch (command) {
186       case 1:
187 	(void)printf("ipx-rip-req");
188 	if (length > 0) {
189 	    TCHECK(ipx[3]);
190 	    (void)printf(" %x/%d.%d", EXTRACT_32BITS(&ipx[0]),
191 			 EXTRACT_16BITS(&ipx[2]), EXTRACT_16BITS(&ipx[3]));
192 	}
193 	break;
194       case 2:
195 	(void)printf("ipx-rip-resp");
196 	for (i = 0; i < 50 && length > 0; i++) {
197 	    TCHECK(ipx[3]);
198 	    (void)printf(" %x/%d.%d", EXTRACT_32BITS(&ipx[0]),
199 			 EXTRACT_16BITS(&ipx[2]), EXTRACT_16BITS(&ipx[3]));
200 
201 	    ipx += 4;
202 	    length -= 8;
203 	}
204 	break;
205       default:
206 	    (void)printf("ipx-rip-?%x", command);
207     }
208 	return;
209 trunc:
210 	printf("[|ipx %d]", length);
211 }
212 
213