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
28static const char rcsid[] _U_ =
29    "@(#) $Header: /tcpdump/master/tcpdump/print-ipx.c,v 1.42 2005-05-06 08:26:44 guy Exp $";
30#endif
31
32#ifdef HAVE_CONFIG_H
33#include "config.h"
34#endif
35
36#include <tcpdump-stdinc.h>
37
38#include <stdlib.h>
39#include <stdio.h>
40#include <string.h>
41
42#include "interface.h"
43#include "addrtoname.h"
44#include "ipx.h"
45#include "extract.h"
46
47
48static const char *ipxaddr_string(u_int32_t, const u_char *);
49void ipx_decode(const struct ipxHdr *, const u_char *, u_int);
50void ipx_sap_print(const u_short *, u_int);
51void ipx_rip_print(const u_short *, u_int);
52
53/*
54 * Print IPX datagram packets.
55 */
56void
57ipx_print(const u_char *p, u_int length)
58{
59	const struct ipxHdr *ipx = (const struct ipxHdr *)p;
60
61	if (!eflag)
62		printf("IPX ");
63
64	TCHECK(ipx->srcSkt);
65	(void)printf("%s.%04x > ",
66		     ipxaddr_string(EXTRACT_32BITS(ipx->srcNet), ipx->srcNode),
67		     EXTRACT_16BITS(&ipx->srcSkt));
68
69	(void)printf("%s.%04x: ",
70		     ipxaddr_string(EXTRACT_32BITS(ipx->dstNet), ipx->dstNode),
71		     EXTRACT_16BITS(&ipx->dstSkt));
72
73	/* take length from ipx header */
74	TCHECK(ipx->length);
75	length = EXTRACT_16BITS(&ipx->length);
76
77	ipx_decode(ipx, (u_char *)ipx + ipxSize, length - ipxSize);
78	return;
79trunc:
80	printf("[|ipx %d]", length);
81}
82
83static const char *
84ipxaddr_string(u_int32_t net, const u_char *node)
85{
86    static char line[256];
87
88    snprintf(line, sizeof(line), "%08x.%02x:%02x:%02x:%02x:%02x:%02x",
89	    net, node[0], node[1], node[2], node[3], node[4], node[5]);
90
91    return line;
92}
93
94void
95ipx_decode(const struct ipxHdr *ipx, const u_char *datap, u_int length)
96{
97    register u_short dstSkt;
98
99    dstSkt = EXTRACT_16BITS(&ipx->dstSkt);
100    switch (dstSkt) {
101      case IPX_SKT_NCP:
102	(void)printf("ipx-ncp %d", length);
103	break;
104      case IPX_SKT_SAP:
105	ipx_sap_print((u_short *)datap, length);
106	break;
107      case IPX_SKT_RIP:
108	ipx_rip_print((u_short *)datap, length);
109	break;
110      case IPX_SKT_NETBIOS:
111	(void)printf("ipx-netbios %d", length);
112#ifdef TCPDUMP_DO_SMB
113	ipx_netbios_print(datap, length);
114#endif
115	break;
116      case IPX_SKT_DIAGNOSTICS:
117	(void)printf("ipx-diags %d", length);
118	break;
119      case IPX_SKT_NWLINK_DGM:
120	(void)printf("ipx-nwlink-dgm %d", length);
121#ifdef TCPDUMP_DO_SMB
122	ipx_netbios_print(datap, length);
123#endif
124	break;
125      case IPX_SKT_EIGRP:
126	eigrp_print(datap, length);
127	break;
128      default:
129	(void)printf("ipx-#%x %d", dstSkt, length);
130	break;
131    }
132}
133
134void
135ipx_sap_print(const u_short *ipx, u_int length)
136{
137    int command, i;
138
139    TCHECK(ipx[0]);
140    command = EXTRACT_16BITS(ipx);
141    ipx++;
142    length -= 2;
143
144    switch (command) {
145      case 1:
146      case 3:
147	if (command == 1)
148	    (void)printf("ipx-sap-req");
149	else
150	    (void)printf("ipx-sap-nearest-req");
151
152	TCHECK(ipx[0]);
153	(void)printf(" %s", ipxsap_string(htons(EXTRACT_16BITS(&ipx[0]))));
154	break;
155
156      case 2:
157      case 4:
158	if (command == 2)
159	    (void)printf("ipx-sap-resp");
160	else
161	    (void)printf("ipx-sap-nearest-resp");
162
163	for (i = 0; i < 8 && length > 0; i++) {
164	    TCHECK(ipx[0]);
165	    (void)printf(" %s '", ipxsap_string(htons(EXTRACT_16BITS(&ipx[0]))));
166	    if (fn_printzp((u_char *)&ipx[1], 48, snapend)) {
167		printf("'");
168		goto trunc;
169	    }
170	    TCHECK2(ipx[25], 10);
171	    printf("' addr %s",
172		ipxaddr_string(EXTRACT_32BITS(&ipx[25]), (u_char *)&ipx[27]));
173	    ipx += 32;
174	    length -= 64;
175	}
176	break;
177      default:
178	(void)printf("ipx-sap-?%x", command);
179	break;
180    }
181    return;
182trunc:
183    printf("[|ipx %d]", length);
184}
185
186void
187ipx_rip_print(const u_short *ipx, u_int length)
188{
189    int command, i;
190
191    TCHECK(ipx[0]);
192    command = EXTRACT_16BITS(ipx);
193    ipx++;
194    length -= 2;
195
196    switch (command) {
197      case 1:
198	(void)printf("ipx-rip-req");
199	if (length > 0) {
200	    TCHECK(ipx[3]);
201	    (void)printf(" %08x/%d.%d", EXTRACT_32BITS(&ipx[0]),
202			 EXTRACT_16BITS(&ipx[2]), EXTRACT_16BITS(&ipx[3]));
203	}
204	break;
205      case 2:
206	(void)printf("ipx-rip-resp");
207	for (i = 0; i < 50 && length > 0; i++) {
208	    TCHECK(ipx[3]);
209	    (void)printf(" %08x/%d.%d", EXTRACT_32BITS(&ipx[0]),
210			 EXTRACT_16BITS(&ipx[2]), EXTRACT_16BITS(&ipx[3]));
211
212	    ipx += 4;
213	    length -= 8;
214	}
215	break;
216      default:
217	(void)printf("ipx-rip-?%x", command);
218	break;
219    }
220    return;
221trunc:
222    printf("[|ipx %d]", length);
223}
224