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 1.40.2.2 2005/05/06 08:27:00 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 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; 79 trunc: 80 printf("[|ipx %d]", length); 81 } 82 83 static const char * 84 ipxaddr_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 94 void 95 ipx_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 } 133 134 void 135 ipx_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; 182 trunc: 183 printf("[|ipx %d]", length); 184 } 185 186 void 187 ipx_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(" %u/%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(" %u/%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; 221 trunc: 222 printf("[|ipx %d]", length); 223 } 224