1 /* $OpenBSD: print-ipx.c,v 1.8 2001/11/06 03:11:40 deraadt Exp $ */ 2 3 /* 4 * Copyright (c) 1994, 1995, 1996 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that: (1) source code distributions 9 * retain the above copyright notice and this paragraph in its entirety, (2) 10 * distributions including binary code include the above copyright notice and 11 * this paragraph in its entirety in the documentation or other materials 12 * provided with the distribution, and (3) all advertising materials mentioning 13 * features or use of this software display the following acknowledgement: 14 * ``This product includes software developed by the University of California, 15 * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of 16 * the University nor the names of its contributors may be used to endorse 17 * or promote products derived from this software without specific prior 18 * written permission. 19 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED 20 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF 21 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. 22 * 23 * Format and print Novell IPX packets. 24 * Contributed by Brad Parker (brad@fcr.com). 25 */ 26 27 #ifndef lint 28 static const char rcsid[] = 29 "@(#) $Header: /home/cvs/src/usr.sbin/tcpdump/print-ipx.c,v 1.8 2001/11/06 03:11:40 deraadt Exp $"; 30 #endif 31 32 #include <sys/param.h> 33 #include <sys/time.h> 34 #include <sys/socket.h> 35 36 #include <netinet/in.h> 37 #include <netinet/in_systm.h> 38 #include <netinet/ip.h> 39 #include <netinet/ip_var.h> 40 #include <netinet/udp.h> 41 #include <netinet/udp_var.h> 42 #include <netinet/tcp.h> 43 44 #ifdef __STDC__ 45 #include <stdlib.h> 46 #endif 47 #include <stdio.h> 48 #include <string.h> 49 50 #include "interface.h" 51 #include "addrtoname.h" 52 #include "ipx.h" 53 #include "extract.h" 54 55 56 static const char *ipxaddr_string(u_int32_t, const u_char *); 57 void ipx_decode(const struct ipxHdr *, const u_char *, u_int); 58 void ipx_sap_print(const u_short *, u_int); 59 void ipx_rip_print(const u_short *, u_int); 60 61 /* 62 * Print IPX datagram packets. 63 */ 64 void 65 ipx_print(const u_char *p, u_int length) 66 { 67 const struct ipxHdr *ipx = (const struct ipxHdr *)p; 68 69 TCHECK(ipx->srcSkt); 70 (void)printf("%s.%x > ", 71 ipxaddr_string(EXTRACT_32BITS(ipx->srcNet), ipx->srcNode), 72 EXTRACT_16BITS(&ipx->srcSkt)); 73 74 (void)printf("%s.%x:", 75 ipxaddr_string(EXTRACT_32BITS(ipx->dstNet), ipx->dstNode), 76 EXTRACT_16BITS(&ipx->dstSkt)); 77 78 /* take length from ipx header */ 79 TCHECK(ipx->length); 80 length = EXTRACT_16BITS(&ipx->length); 81 82 ipx_decode(ipx, (u_char *)ipx + ipxSize, length - ipxSize); 83 return; 84 trunc: 85 printf("[|ipx %d]", length); 86 } 87 88 static const char * 89 ipxaddr_string(u_int32_t net, const u_char *node) 90 { 91 static char line[256]; 92 93 snprintf(line, sizeof(line), "%x.%02x:%02x:%02x:%02x:%02x:%02x", 94 net, node[0], node[1], node[2], node[3], node[4], node[5]); 95 96 return line; 97 } 98 99 void 100 ipx_decode(const struct ipxHdr *ipx, const u_char *datap, u_int length) 101 { 102 register u_short dstSkt; 103 104 dstSkt = EXTRACT_16BITS(&ipx->dstSkt); 105 switch (dstSkt) { 106 case IPX_SKT_NCP: 107 (void)printf(" ipx-ncp %d", length); 108 break; 109 case IPX_SKT_SAP: 110 ipx_sap_print((u_short *)datap, length); 111 break; 112 case IPX_SKT_RIP: 113 ipx_rip_print((u_short *)datap, length); 114 break; 115 case IPX_SKT_NETBIOS: 116 (void)printf(" ipx-netbios %d", length); 117 break; 118 case IPX_SKT_DIAGNOSTICS: 119 (void)printf(" ipx-diags %d", length); 120 break; 121 default: 122 (void)printf(" ipx-#%x %d", dstSkt, length); 123 break; 124 } 125 } 126 127 void 128 ipx_sap_print(const u_short *ipx, u_int length) 129 { 130 int command, i; 131 132 TCHECK(ipx[0]); 133 command = EXTRACT_16BITS(ipx); 134 ipx++; 135 length -= 2; 136 137 switch (command) { 138 case 1: 139 case 3: 140 if (command == 1) 141 (void)printf("ipx-sap-req"); 142 else 143 (void)printf("ipx-sap-nearest-req"); 144 145 if (length > 0) { 146 TCHECK(ipx[1]); 147 (void)printf(" %x '", EXTRACT_16BITS(&ipx[0])); 148 fn_print((u_char *)&ipx[1], (u_char *)&ipx[1] + 48); 149 putchar('\''); 150 } 151 break; 152 153 case 2: 154 case 4: 155 if (command == 2) 156 (void)printf("ipx-sap-resp"); 157 else 158 (void)printf("ipx-sap-nearest-resp"); 159 160 for (i = 0; i < 8 && length > 0; i++) { 161 TCHECK2(ipx[27], 1); 162 (void)printf(" %x '", EXTRACT_16BITS(&ipx[0])); 163 fn_print((u_char *)&ipx[1], (u_char *)&ipx[1] + 48); 164 printf("' addr %s", 165 ipxaddr_string(EXTRACT_32BITS(&ipx[25]), (u_char *)&ipx[27])); 166 ipx += 32; 167 length -= 64; 168 } 169 break; 170 default: 171 (void)printf("ipx-sap-?%x", command); 172 break; 173 } 174 return; 175 trunc: 176 printf("[|ipx %d]", length); 177 } 178 179 void 180 ipx_rip_print(const u_short *ipx, u_int length) 181 { 182 int command, i; 183 184 TCHECK(ipx[0]); 185 command = EXTRACT_16BITS(ipx); 186 ipx++; 187 length -= 2; 188 189 switch (command) { 190 case 1: 191 (void)printf("ipx-rip-req"); 192 if (length > 0) { 193 TCHECK(ipx[3]); 194 (void)printf(" %u/%d.%d", EXTRACT_32BITS(&ipx[0]), 195 EXTRACT_16BITS(&ipx[2]), EXTRACT_16BITS(&ipx[3])); 196 } 197 break; 198 case 2: 199 (void)printf("ipx-rip-resp"); 200 for (i = 0; i < 50 && length > 0; i++) { 201 TCHECK(ipx[3]); 202 (void)printf(" %u/%d.%d", EXTRACT_32BITS(&ipx[0]), 203 EXTRACT_16BITS(&ipx[2]), EXTRACT_16BITS(&ipx[3])); 204 205 ipx += 4; 206 length -= 8; 207 } 208 break; 209 default: 210 (void)printf("ipx-rip-?%x", command); 211 } 212 return; 213 trunc: 214 printf("[|ipx %d]", length); 215 } 216 217