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 (at) fcr.com). 23 */ 24 25 #ifndef lint 26 static 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 46 static const char *ipxaddr_string(u_int32_t, const u_char *); 47 void ipx_decode(const struct ipxHdr *, const u_char *, u_int); 48 void ipx_sap_print(const u_short *, u_int); 49 void ipx_rip_print(const u_short *, u_int); 50 51 /* 52 * Print IPX datagram packets. 53 */ 54 void 55 ipx_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; 77 trunc: 78 printf("[|ipx %d]", length); 79 } 80 81 static const char * 82 ipxaddr_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 92 void 93 ipx_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 } 131 132 void 133 ipx_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; 180 trunc: 181 printf("[|ipx %d]", length); 182 } 183 184 void 185 ipx_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; 219 trunc: 220 printf("[|ipx %d]", length); 221 } 222
