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 #include <sys/cdefs.h> 26 #ifndef lint 27 #if 0 28 static const char rcsid[] _U_ = 29 "@(#) Header: /tcpdump/master/tcpdump/print-ipx.c,v 1.42 2005-05-06 08:26:44 guy Exp "; 30 #else 31 __RCSID("$NetBSD: print-ipx.c,v 1.3 2013/04/06 19:33:08 christos Exp $"); 32 #endif 33 #endif 34 35 #ifdef HAVE_CONFIG_H 36 #include "config.h" 37 #endif 38 39 #include <tcpdump-stdinc.h> 40 41 #include <stdlib.h> 42 #include <stdio.h> 43 #include <string.h> 44 45 #include "interface.h" 46 #include "addrtoname.h" 47 #include "ipx.h" 48 #include "extract.h" 49 50 51 static const char *ipxaddr_string(u_int32_t, const u_char *); 52 void ipx_decode(const struct ipxHdr *, const u_char *, u_int); 53 void ipx_sap_print(const u_short *, u_int); 54 void ipx_rip_print(const u_short *, u_int); 55 56 /* 57 * Print IPX datagram packets. 58 */ 59 void 60 ipx_print(const u_char *p, u_int length) 61 { 62 const struct ipxHdr *ipx = (const struct ipxHdr *)p; 63 64 if (!eflag) 65 printf("IPX "); 66 67 TCHECK(ipx->srcSkt); 68 (void)printf("%s.%04x > ", 69 ipxaddr_string(EXTRACT_32BITS(ipx->srcNet), ipx->srcNode), 70 EXTRACT_16BITS(&ipx->srcSkt)); 71 72 (void)printf("%s.%04x: ", 73 ipxaddr_string(EXTRACT_32BITS(ipx->dstNet), ipx->dstNode), 74 EXTRACT_16BITS(&ipx->dstSkt)); 75 76 /* take length from ipx header */ 77 TCHECK(ipx->length); 78 length = EXTRACT_16BITS(&ipx->length); 79 80 ipx_decode(ipx, (u_char *)ipx + ipxSize, length - ipxSize); 81 return; 82 trunc: 83 printf("[|ipx %d]", length); 84 } 85 86 static const char * 87 ipxaddr_string(u_int32_t net, const u_char *node) 88 { 89 static char line[256]; 90 91 snprintf(line, sizeof(line), "%08x.%02x:%02x:%02x:%02x:%02x:%02x", 92 net, node[0], node[1], node[2], node[3], node[4], node[5]); 93 94 return line; 95 } 96 97 void 98 ipx_decode(const struct ipxHdr *ipx, const u_char *datap, u_int length) 99 { 100 register u_short dstSkt; 101 102 dstSkt = EXTRACT_16BITS(&ipx->dstSkt); 103 switch (dstSkt) { 104 case IPX_SKT_NCP: 105 (void)printf("ipx-ncp %d", length); 106 break; 107 case IPX_SKT_SAP: 108 ipx_sap_print((u_short *)datap, length); 109 break; 110 case IPX_SKT_RIP: 111 ipx_rip_print((u_short *)datap, length); 112 break; 113 case IPX_SKT_NETBIOS: 114 (void)printf("ipx-netbios %d", length); 115 #ifdef TCPDUMP_DO_SMB 116 ipx_netbios_print(datap, length); 117 #endif 118 break; 119 case IPX_SKT_DIAGNOSTICS: 120 (void)printf("ipx-diags %d", length); 121 break; 122 case IPX_SKT_NWLINK_DGM: 123 (void)printf("ipx-nwlink-dgm %d", length); 124 #ifdef TCPDUMP_DO_SMB 125 ipx_netbios_print(datap, length); 126 #endif 127 break; 128 case IPX_SKT_EIGRP: 129 eigrp_print(datap, length); 130 break; 131 default: 132 (void)printf("ipx-#%x %d", dstSkt, length); 133 break; 134 } 135 } 136 137 void 138 ipx_sap_print(const u_short *ipx, u_int length) 139 { 140 int command, i; 141 142 TCHECK(ipx[0]); 143 command = EXTRACT_16BITS(ipx); 144 ipx++; 145 length -= 2; 146 147 switch (command) { 148 case 1: 149 case 3: 150 if (command == 1) 151 (void)printf("ipx-sap-req"); 152 else 153 (void)printf("ipx-sap-nearest-req"); 154 155 TCHECK(ipx[0]); 156 (void)printf(" %s", ipxsap_string(htons(EXTRACT_16BITS(&ipx[0])))); 157 break; 158 159 case 2: 160 case 4: 161 if (command == 2) 162 (void)printf("ipx-sap-resp"); 163 else 164 (void)printf("ipx-sap-nearest-resp"); 165 166 for (i = 0; i < 8 && length > 0; i++) { 167 TCHECK(ipx[0]); 168 (void)printf(" %s '", ipxsap_string(htons(EXTRACT_16BITS(&ipx[0])))); 169 if (fn_printzp((u_char *)&ipx[1], 48, snapend)) { 170 printf("'"); 171 goto trunc; 172 } 173 TCHECK2(ipx[25], 10); 174 printf("' addr %s", 175 ipxaddr_string(EXTRACT_32BITS(&ipx[25]), (u_char *)&ipx[27])); 176 ipx += 32; 177 length -= 64; 178 } 179 break; 180 default: 181 (void)printf("ipx-sap-?%x", command); 182 break; 183 } 184 return; 185 trunc: 186 printf("[|ipx %d]", length); 187 } 188 189 void 190 ipx_rip_print(const u_short *ipx, u_int length) 191 { 192 int command, i; 193 194 TCHECK(ipx[0]); 195 command = EXTRACT_16BITS(ipx); 196 ipx++; 197 length -= 2; 198 199 switch (command) { 200 case 1: 201 (void)printf("ipx-rip-req"); 202 if (length > 0) { 203 TCHECK(ipx[3]); 204 (void)printf(" %08x/%d.%d", EXTRACT_32BITS(&ipx[0]), 205 EXTRACT_16BITS(&ipx[2]), EXTRACT_16BITS(&ipx[3])); 206 } 207 break; 208 case 2: 209 (void)printf("ipx-rip-resp"); 210 for (i = 0; i < 50 && length > 0; i++) { 211 TCHECK(ipx[3]); 212 (void)printf(" %08x/%d.%d", EXTRACT_32BITS(&ipx[0]), 213 EXTRACT_16BITS(&ipx[2]), EXTRACT_16BITS(&ipx[3])); 214 215 ipx += 4; 216 length -= 8; 217 } 218 break; 219 default: 220 (void)printf("ipx-rip-?%x", command); 221 break; 222 } 223 return; 224 trunc: 225 printf("[|ipx %d]", length); 226 } 227