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
25#ifndef lint
26static const char rcsid[] _U_ =
27    "@(#) $Header: /tcpdump/master/tcpdump/print-ipx.c,v 1.42 2005-05-06 08:26:44 guy Exp $";
28#endif
29
30#ifdef HAVE_CONFIG_H
31#include "config.h"
32#endif
33
34#include <tcpdump-stdinc.h>
35
36#include <stdlib.h>
37#include <stdio.h>
38#include <string.h>
39
40#include "interface.h"
41#include "addrtoname.h"
42#include "ipx.h"
43#include "extract.h"
44
45
46static const char *ipxaddr_string(u_int32_t, const u_char *);
47void ipx_decode(const struct ipxHdr *, const u_char *, u_int);
48void ipx_sap_print(const u_short *, u_int);
49void ipx_rip_print(const u_short *, u_int);
50
51/*
52 * Print IPX datagram packets.
53 */
54void
55ipx_print(const u_char *p, u_int length)
56{
57	const struct ipxHdr *ipx = (const struct ipxHdr *)p;
58
59	if (!eflag)
60		printf("IPX ");
61
62	TCHECK(ipx->srcSkt);
63	(void)printf("%s.%04x > ",
64		     ipxaddr_string(EXTRACT_32BITS(ipx->srcNet), ipx->srcNode),
65		     EXTRACT_16BITS(&ipx->srcSkt));
66
67	(void)printf("%s.%04x: ",
68		     ipxaddr_string(EXTRACT_32BITS(ipx->dstNet), ipx->dstNode),
69		     EXTRACT_16BITS(&ipx->dstSkt));
70
71	/* take length from ipx header */
72	TCHECK(ipx->length);
73	length = EXTRACT_16BITS(&ipx->length);
74
75	ipx_decode(ipx, (u_char *)ipx + ipxSize, length - ipxSize);
76	return;
77trunc:
78	printf("[|ipx %d]", length);
79}
80
81static const char *
82ipxaddr_string(u_int32_t net, const u_char *node)
83{
84    static char line[256];
85
86    snprintf(line, sizeof(line), "%08x.%02x:%02x:%02x:%02x:%02x:%02x",
87	    net, node[0], node[1], node[2], node[3], node[4], node[5]);
88
89    return line;
90}
91
92void
93ipx_decode(const struct ipxHdr *ipx, const u_char *datap, u_int length)
94{
95    register u_short dstSkt;
96
97    dstSkt = EXTRACT_16BITS(&ipx->dstSkt);
98    switch (dstSkt) {
99      case IPX_SKT_NCP:
100	(void)printf("ipx-ncp %d", length);
101	break;
102      case IPX_SKT_SAP:
103	ipx_sap_print((u_short *)datap, length);
104	break;
105      case IPX_SKT_RIP:
106	ipx_rip_print((u_short *)datap, length);
107	break;
108      case IPX_SKT_NETBIOS:
109	(void)printf("ipx-netbios %d", length);
110#ifdef TCPDUMP_DO_SMB
111	ipx_netbios_print(datap, length);
112#endif
113	break;
114      case IPX_SKT_DIAGNOSTICS:
115	(void)printf("ipx-diags %d", length);
116	break;
117      case IPX_SKT_NWLINK_DGM:
118	(void)printf("ipx-nwlink-dgm %d", length);
119#ifdef TCPDUMP_DO_SMB
120	ipx_netbios_print(datap, length);
121#endif
122	break;
123      case IPX_SKT_EIGRP:
124	eigrp_print(datap, length);
125	break;
126      default:
127	(void)printf("ipx-#%x %d", dstSkt, length);
128	break;
129    }
130}
131
132void
133ipx_sap_print(const u_short *ipx, u_int length)
134{
135    int command, i;
136
137    TCHECK(ipx[0]);
138    command = EXTRACT_16BITS(ipx);
139    ipx++;
140    length -= 2;
141
142    switch (command) {
143      case 1:
144      case 3:
145	if (command == 1)
146	    (void)printf("ipx-sap-req");
147	else
148	    (void)printf("ipx-sap-nearest-req");
149
150	TCHECK(ipx[0]);
151	(void)printf(" %s", ipxsap_string(htons(EXTRACT_16BITS(&ipx[0]))));
152	break;
153
154      case 2:
155      case 4:
156	if (command == 2)
157	    (void)printf("ipx-sap-resp");
158	else
159	    (void)printf("ipx-sap-nearest-resp");
160
161	for (i = 0; i < 8 && length > 0; i++) {
162	    TCHECK(ipx[0]);
163	    (void)printf(" %s '", ipxsap_string(htons(EXTRACT_16BITS(&ipx[0]))));
164	    if (fn_printzp((u_char *)&ipx[1], 48, snapend)) {
165		printf("'");
166		goto trunc;
167	    }
168	    TCHECK2(ipx[25], 10);
169	    printf("' addr %s",
170		ipxaddr_string(EXTRACT_32BITS(&ipx[25]), (u_char *)&ipx[27]));
171	    ipx += 32;
172	    length -= 64;
173	}
174	break;
175      default:
176	(void)printf("ipx-sap-?%x", command);
177	break;
178    }
179    return;
180trunc:
181    printf("[|ipx %d]", length);
182}
183
184void
185ipx_rip_print(const u_short *ipx, u_int length)
186{
187    int command, i;
188
189    TCHECK(ipx[0]);
190    command = EXTRACT_16BITS(ipx);
191    ipx++;
192    length -= 2;
193
194    switch (command) {
195      case 1:
196	(void)printf("ipx-rip-req");
197	if (length > 0) {
198	    TCHECK(ipx[3]);
199	    (void)printf(" %08x/%d.%d", EXTRACT_32BITS(&ipx[0]),
200			 EXTRACT_16BITS(&ipx[2]), EXTRACT_16BITS(&ipx[3]));
201	}
202	break;
203      case 2:
204	(void)printf("ipx-rip-resp");
205	for (i = 0; i < 50 && length > 0; i++) {
206	    TCHECK(ipx[3]);
207	    (void)printf(" %08x/%d.%d", EXTRACT_32BITS(&ipx[0]),
208			 EXTRACT_16BITS(&ipx[2]), EXTRACT_16BITS(&ipx[3]));
209
210	    ipx += 4;
211	    length -= 8;
212	}
213	break;
214      default:
215	(void)printf("ipx-rip-?%x", command);
216	break;
217    }
218    return;
219trunc:
220    printf("[|ipx %d]", length);
221}
222