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[] _U_ = 29 "@(#) $Header: /tcpdump/master/tcpdump/print-ipx.c,v 1.34.2.2 2003/11/16 08:51:28 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 48 static const char *ipxaddr_string(u_int32_t, const u_char *); 49 void ipx_decode(const struct ipxHdr *, const u_char *, u_int); 50 void ipx_sap_print(const u_short *, u_int); 51 void ipx_rip_print(const u_short *, u_int); 52 53 /* 54 * Print IPX datagram packets. 55 */ 56 void 57 ipx_print(const u_char *p, u_int length) 58 { 59 const struct ipxHdr *ipx = (const struct ipxHdr *)p; 60 61 TCHECK(ipx->srcSkt); 62 (void)printf("%s.%04x > ", 63 ipxaddr_string(EXTRACT_32BITS(ipx->srcNet), ipx->srcNode), 64 EXTRACT_16BITS(&ipx->srcSkt)); 65 66 (void)printf("%s.%04x:", 67 ipxaddr_string(EXTRACT_32BITS(ipx->dstNet), ipx->dstNode), 68 EXTRACT_16BITS(&ipx->dstSkt)); 69 70 /* take length from ipx header */ 71 TCHECK(ipx->length); 72 length = EXTRACT_16BITS(&ipx->length); 73 74 ipx_decode(ipx, (u_char *)ipx + ipxSize, length - ipxSize); 75 return; 76 trunc: 77 printf("[|ipx %d]", length); 78 } 79 80 static const char * 81 ipxaddr_string(u_int32_t net, const u_char *node) 82 { 83 static char line[256]; 84 85 snprintf(line, sizeof(line), "%08x.%02x:%02x:%02x:%02x:%02x:%02x", 86 net, node[0], node[1], node[2], node[3], node[4], node[5]); 87 88 return line; 89 } 90 91 void 92 ipx_decode(const struct ipxHdr *ipx, const u_char *datap, u_int length) 93 { 94 register u_short dstSkt; 95 96 dstSkt = EXTRACT_16BITS(&ipx->dstSkt); 97 switch (dstSkt) { 98 case IPX_SKT_NCP: 99 (void)printf(" ipx-ncp %d", length); 100 break; 101 case IPX_SKT_SAP: 102 ipx_sap_print((u_short *)datap, length); 103 break; 104 case IPX_SKT_RIP: 105 ipx_rip_print((u_short *)datap, length); 106 break; 107 case IPX_SKT_NETBIOS: 108 (void)printf(" ipx-netbios %d", length); 109 #ifdef TCPDUMP_DO_SMB 110 ipx_netbios_print(datap, length); 111 #endif 112 break; 113 case IPX_SKT_DIAGNOSTICS: 114 (void)printf(" ipx-diags %d", length); 115 break; 116 case IPX_SKT_NWLINK_DGM: 117 (void)printf(" ipx-nwlink-dgm %d", length); 118 #ifdef TCPDUMP_DO_SMB 119 ipx_netbios_print(datap, length); 120 #endif 121 break; 122 case IPX_SKT_EIGRP: 123 (void)printf(" ipx-eigrp %d", length); 124 break; 125 default: 126 (void)printf(" ipx-#%x %d", dstSkt, length); 127 break; 128 } 129 } 130 131 void 132 ipx_sap_print(const u_short *ipx, u_int length) 133 { 134 int command, i; 135 136 TCHECK(ipx[0]); 137 command = EXTRACT_16BITS(ipx); 138 ipx++; 139 length -= 2; 140 141 switch (command) { 142 case 1: 143 case 3: 144 if (command == 1) 145 (void)printf("ipx-sap-req"); 146 else 147 (void)printf("ipx-sap-nearest-req"); 148 149 TCHECK(ipx[0]); 150 (void)printf(" %s", ipxsap_string(htons(EXTRACT_16BITS(&ipx[0])))); 151 break; 152 153 case 2: 154 case 4: 155 if (command == 2) 156 (void)printf("ipx-sap-resp"); 157 else 158 (void)printf("ipx-sap-nearest-resp"); 159 160 for (i = 0; i < 8 && length > 0; i++) { 161 TCHECK2(ipx[25], 10); 162 (void)printf(" %s '", ipxsap_string(htons(EXTRACT_16BITS(&ipx[0])))); 163 fn_print((u_char *)&ipx[1], (u_char *)&ipx[1] + 48); 164 printf("' addr %s", 165 ipxaddr_string(EXTRACT_32BITS(&ipx[25]), (u_char *)&ipx[27])); 166 ipx += 32; 167 length -= 64; 168 } 169 break; 170 default: 171 (void)printf("ipx-sap-?%x", command); 172 break; 173 } 174 return; 175 trunc: 176 printf("[|ipx %d]", length); 177 } 178 179 void 180 ipx_rip_print(const u_short *ipx, u_int length) 181 { 182 int command, i; 183 184 TCHECK(ipx[0]); 185 command = EXTRACT_16BITS(ipx); 186 ipx++; 187 length -= 2; 188 189 switch (command) { 190 case 1: 191 (void)printf("ipx-rip-req"); 192 if (length > 0) { 193 TCHECK(ipx[3]); 194 (void)printf(" %x/%d.%d", EXTRACT_32BITS(&ipx[0]), 195 EXTRACT_16BITS(&ipx[2]), EXTRACT_16BITS(&ipx[3])); 196 } 197 break; 198 case 2: 199 (void)printf("ipx-rip-resp"); 200 for (i = 0; i < 50 && length > 0; i++) { 201 TCHECK(ipx[3]); 202 (void)printf(" %x/%d.%d", EXTRACT_32BITS(&ipx[0]), 203 EXTRACT_16BITS(&ipx[2]), EXTRACT_16BITS(&ipx[3])); 204 205 ipx += 4; 206 length -= 8; 207 } 208 break; 209 default: 210 (void)printf("ipx-rip-?%x", command); 211 break; 212 } 213 return; 214 trunc: 215 printf("[|ipx %d]", length); 216 } 217