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[] = 29 "@(#) $Header: /tcpdump/master/tcpdump/print-ipx.c,v 1.27 2000/09/29 04:58:41 guy Exp $"; 30 #endif 31 32 #ifdef HAVE_CONFIG_H 33 #include "config.h" 34 #endif 35 36 #include <sys/param.h> 37 #include <sys/time.h> 38 #include <sys/socket.h> 39 40 #include <netinet/in.h> 41 42 #include <stdlib.h> 43 #include <stdio.h> 44 #include <string.h> 45 46 #include "interface.h" 47 #include "addrtoname.h" 48 #include "ipx.h" 49 #include "extract.h" 50 51 52 static const char *ipxaddr_string(u_int32_t, const u_char *); 53 void ipx_decode(const struct ipxHdr *, const u_char *, u_int); 54 void ipx_sap_print(const u_short *, u_int); 55 void ipx_rip_print(const u_short *, u_int); 56 57 /* 58 * Print IPX datagram packets. 59 */ 60 void 61 ipx_print(const u_char *p, u_int length) 62 { 63 const struct ipxHdr *ipx = (const struct ipxHdr *)p; 64 65 TCHECK(ipx->srcSkt); 66 (void)printf("%s.%x > ", 67 ipxaddr_string(EXTRACT_32BITS(ipx->srcNet), ipx->srcNode), 68 EXTRACT_16BITS(&ipx->srcSkt)); 69 70 (void)printf("%s.%x:", 71 ipxaddr_string(EXTRACT_32BITS(ipx->dstNet), ipx->dstNode), 72 EXTRACT_16BITS(&ipx->dstSkt)); 73 74 /* take length from ipx header */ 75 TCHECK(ipx->length); 76 length = EXTRACT_16BITS(&ipx->length); 77 78 ipx_decode(ipx, (u_char *)ipx + ipxSize, length - ipxSize); 79 return; 80 trunc: 81 printf("[|ipx %d]", length); 82 } 83 84 static const char * 85 ipxaddr_string(u_int32_t net, const u_char *node) 86 { 87 static char line[256]; 88 89 snprintf(line, sizeof(line), "%x.%02x:%02x:%02x:%02x:%02x:%02x", 90 net, node[0], node[1], node[2], node[3], node[4], node[5]); 91 92 return line; 93 } 94 95 void 96 ipx_decode(const struct ipxHdr *ipx, const u_char *datap, u_int length) 97 { 98 register u_short dstSkt; 99 100 dstSkt = EXTRACT_16BITS(&ipx->dstSkt); 101 switch (dstSkt) { 102 case IPX_SKT_NCP: 103 (void)printf(" ipx-ncp %d", length); 104 break; 105 case IPX_SKT_SAP: 106 ipx_sap_print((u_short *)datap, length); 107 break; 108 case IPX_SKT_RIP: 109 ipx_rip_print((u_short *)datap, length); 110 break; 111 case IPX_SKT_NETBIOS: 112 (void)printf(" ipx-netbios %d", length); 113 break; 114 case IPX_SKT_DIAGNOSTICS: 115 (void)printf(" ipx-diags %d", length); 116 break; 117 default: 118 (void)printf(" ipx-#%x %d", dstSkt, length); 119 break; 120 } 121 } 122 123 void 124 ipx_sap_print(const u_short *ipx, u_int length) 125 { 126 int command, i; 127 128 TCHECK(ipx[0]); 129 command = EXTRACT_16BITS(ipx); 130 ipx++; 131 length -= 2; 132 133 switch (command) { 134 case 1: 135 case 3: 136 if (command == 1) 137 (void)printf("ipx-sap-req"); 138 else 139 (void)printf("ipx-sap-nearest-req"); 140 141 if (length > 0) { 142 TCHECK(ipx[1]); 143 (void)printf(" %x '", EXTRACT_16BITS(&ipx[0])); 144 fn_print((u_char *)&ipx[1], (u_char *)&ipx[1] + 48); 145 putchar('\''); 146 } 147 break; 148 149 case 2: 150 case 4: 151 if (command == 2) 152 (void)printf("ipx-sap-resp"); 153 else 154 (void)printf("ipx-sap-nearest-resp"); 155 156 for (i = 0; i < 8 && length > 0; i++) { 157 TCHECK2(ipx[27], 1); 158 (void)printf(" %x '", EXTRACT_16BITS(&ipx[0])); 159 fn_print((u_char *)&ipx[1], (u_char *)&ipx[1] + 48); 160 printf("' addr %s", 161 ipxaddr_string(EXTRACT_32BITS(&ipx[25]), (u_char *)&ipx[27])); 162 ipx += 32; 163 length -= 64; 164 } 165 break; 166 default: 167 (void)printf("ipx-sap-?%x", command); 168 break; 169 } 170 return; 171 trunc: 172 printf("[|ipx %d]", length); 173 } 174 175 void 176 ipx_rip_print(const u_short *ipx, u_int length) 177 { 178 int command, i; 179 180 TCHECK(ipx[0]); 181 command = EXTRACT_16BITS(ipx); 182 ipx++; 183 length -= 2; 184 185 switch (command) { 186 case 1: 187 (void)printf("ipx-rip-req"); 188 if (length > 0) { 189 TCHECK(ipx[3]); 190 (void)printf(" %x/%d.%d", EXTRACT_32BITS(&ipx[0]), 191 EXTRACT_16BITS(&ipx[2]), EXTRACT_16BITS(&ipx[3])); 192 } 193 break; 194 case 2: 195 (void)printf("ipx-rip-resp"); 196 for (i = 0; i < 50 && length > 0; i++) { 197 TCHECK(ipx[3]); 198 (void)printf(" %x/%d.%d", EXTRACT_32BITS(&ipx[0]), 199 EXTRACT_16BITS(&ipx[2]), EXTRACT_16BITS(&ipx[3])); 200 201 ipx += 4; 202 length -= 8; 203 } 204 break; 205 default: 206 (void)printf("ipx-rip-?%x", command); 207 } 208 return; 209 trunc: 210 printf("[|ipx %d]", length); 211 } 212 213