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 1.22 1999/11/21 09:36:54 fenner 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 #include <netinet/in_systm.h> 42 #include <netinet/ip.h> 43 #include <netinet/ip_var.h> 44 #include <netinet/udp.h> 45 #include <netinet/udp_var.h> 46 #include <netinet/tcp.h> 47 48 #ifdef __STDC__ 49 #include <stdlib.h> 50 #endif 51 #include <stdio.h> 52 #include <string.h> 53 54 #include "interface.h" 55 #include "addrtoname.h" 56 #include "ipx.h" 57 #include "extract.h" 58 59 60 static const char *ipxaddr_string(u_int32_t, const u_char *); 61 void ipx_decode(const struct ipxHdr *, const u_char *, u_int); 62 void ipx_sap_print(const u_short *, u_int); 63 void ipx_rip_print(const u_short *, u_int); 64 65 /* 66 * Print IPX datagram packets. 67 */ 68 void 69 ipx_print(const u_char *p, u_int length) 70 { 71 const struct ipxHdr *ipx = (const struct ipxHdr *)p; 72 73 TCHECK(ipx->srcSkt); 74 (void)printf("%s.%x > ", 75 ipxaddr_string(EXTRACT_32BITS(ipx->srcNet), ipx->srcNode), 76 EXTRACT_16BITS(&ipx->srcSkt)); 77 78 (void)printf("%s.%x:", 79 ipxaddr_string(EXTRACT_32BITS(ipx->dstNet), ipx->dstNode), 80 EXTRACT_16BITS(&ipx->dstSkt)); 81 82 /* take length from ipx header */ 83 TCHECK(ipx->length); 84 length = EXTRACT_16BITS(&ipx->length); 85 86 ipx_decode(ipx, (u_char *)ipx + ipxSize, length - ipxSize); 87 return; 88 trunc: 89 printf("[|ipx %d]", length); 90 } 91 92 static const char * 93 ipxaddr_string(u_int32_t net, const u_char *node) 94 { 95 static char line[256]; 96 97 sprintf(line, "%x.%02x:%02x:%02x:%02x:%02x:%02x", 98 net, node[0], node[1], node[2], node[3], node[4], node[5]); 99 100 return line; 101 } 102 103 void 104 ipx_decode(const struct ipxHdr *ipx, const u_char *datap, u_int length) 105 { 106 register u_short dstSkt; 107 108 dstSkt = EXTRACT_16BITS(&ipx->dstSkt); 109 switch (dstSkt) { 110 case IPX_SKT_NCP: 111 (void)printf(" ipx-ncp %d", length); 112 break; 113 case IPX_SKT_SAP: 114 ipx_sap_print((u_short *)datap, length); 115 break; 116 case IPX_SKT_RIP: 117 ipx_rip_print((u_short *)datap, length); 118 break; 119 case IPX_SKT_NETBIOS: 120 (void)printf(" ipx-netbios %d", length); 121 break; 122 case IPX_SKT_DIAGNOSTICS: 123 (void)printf(" ipx-diags %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 if (length > 0) { 150 TCHECK(ipx[1]); 151 (void)printf(" %x '", EXTRACT_16BITS(&ipx[0])); 152 fn_print((u_char *)&ipx[1], (u_char *)&ipx[1] + 48); 153 putchar('\''); 154 } 155 break; 156 157 case 2: 158 case 4: 159 if (command == 2) 160 (void)printf("ipx-sap-resp"); 161 else 162 (void)printf("ipx-sap-nearest-resp"); 163 164 for (i = 0; i < 8 && length > 0; i++) { 165 TCHECK2(ipx[27], 1); 166 (void)printf(" %x '", EXTRACT_16BITS(&ipx[0])); 167 fn_print((u_char *)&ipx[1], (u_char *)&ipx[1] + 48); 168 printf("' addr %s", 169 ipxaddr_string(EXTRACT_32BITS(&ipx[25]), (u_char *)&ipx[27])); 170 ipx += 32; 171 length -= 64; 172 } 173 break; 174 default: 175 (void)printf("ipx-sap-?%x", command); 176 break; 177 } 178 return; 179 trunc: 180 printf("[|ipx %d]", length); 181 } 182 183 void 184 ipx_rip_print(const u_short *ipx, u_int length) 185 { 186 int command, i; 187 188 TCHECK(ipx[0]); 189 command = EXTRACT_16BITS(ipx); 190 ipx++; 191 length -= 2; 192 193 switch (command) { 194 case 1: 195 (void)printf("ipx-rip-req"); 196 if (length > 0) { 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 break; 202 case 2: 203 (void)printf("ipx-rip-resp"); 204 for (i = 0; i < 50 && length > 0; i++) { 205 TCHECK(ipx[3]); 206 (void)printf(" %x/%d.%d", EXTRACT_32BITS(&ipx[0]), 207 EXTRACT_16BITS(&ipx[2]), EXTRACT_16BITS(&ipx[3])); 208 209 ipx += 4; 210 length -= 8; 211 } 212 break; 213 default: 214 (void)printf("ipx-rip-?%x", command); 215 } 216 return; 217 trunc: 218 printf("[|ipx %d]", length); 219 } 220 221