1 /* $OpenBSD: print-ipx.c,v 1.9 2002/02/19 19:39:40 millert 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 1.9 2002/02/19 19:39:40 millert 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 #include <stdio.h> 45 #include <stdlib.h> 46 #include <string.h> 47 48 #include "interface.h" 49 #include "addrtoname.h" 50 #include "ipx.h" 51 #include "extract.h" 52 53 54 static const char *ipxaddr_string(u_int32_t, const u_char *); 55 void ipx_decode(const struct ipxHdr *, const u_char *, u_int); 56 void ipx_sap_print(const u_short *, u_int); 57 void ipx_rip_print(const u_short *, u_int); 58 59 /* 60 * Print IPX datagram packets. 61 */ 62 void 63 ipx_print(const u_char *p, u_int length) 64 { 65 const struct ipxHdr *ipx = (const struct ipxHdr *)p; 66 67 TCHECK(ipx->srcSkt); 68 (void)printf("%s.%x > ", 69 ipxaddr_string(EXTRACT_32BITS(ipx->srcNet), ipx->srcNode), 70 EXTRACT_16BITS(&ipx->srcSkt)); 71 72 (void)printf("%s.%x:", 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), "%x.%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 break; 116 case IPX_SKT_DIAGNOSTICS: 117 (void)printf(" ipx-diags %d", length); 118 break; 119 default: 120 (void)printf(" ipx-#%x %d", dstSkt, length); 121 break; 122 } 123 } 124 125 void 126 ipx_sap_print(const u_short *ipx, u_int length) 127 { 128 int command, i; 129 130 TCHECK(ipx[0]); 131 command = EXTRACT_16BITS(ipx); 132 ipx++; 133 length -= 2; 134 135 switch (command) { 136 case 1: 137 case 3: 138 if (command == 1) 139 (void)printf("ipx-sap-req"); 140 else 141 (void)printf("ipx-sap-nearest-req"); 142 143 if (length > 0) { 144 TCHECK(ipx[1]); 145 (void)printf(" %x '", EXTRACT_16BITS(&ipx[0])); 146 fn_print((u_char *)&ipx[1], (u_char *)&ipx[1] + 48); 147 putchar('\''); 148 } 149 break; 150 151 case 2: 152 case 4: 153 if (command == 2) 154 (void)printf("ipx-sap-resp"); 155 else 156 (void)printf("ipx-sap-nearest-resp"); 157 158 for (i = 0; i < 8 && length > 0; i++) { 159 TCHECK2(ipx[27], 1); 160 (void)printf(" %x '", EXTRACT_16BITS(&ipx[0])); 161 fn_print((u_char *)&ipx[1], (u_char *)&ipx[1] + 48); 162 printf("' addr %s", 163 ipxaddr_string(EXTRACT_32BITS(&ipx[25]), (u_char *)&ipx[27])); 164 ipx += 32; 165 length -= 64; 166 } 167 break; 168 default: 169 (void)printf("ipx-sap-?%x", command); 170 break; 171 } 172 return; 173 trunc: 174 printf("[|ipx %d]", length); 175 } 176 177 void 178 ipx_rip_print(const u_short *ipx, u_int length) 179 { 180 int command, i; 181 182 TCHECK(ipx[0]); 183 command = EXTRACT_16BITS(ipx); 184 ipx++; 185 length -= 2; 186 187 switch (command) { 188 case 1: 189 (void)printf("ipx-rip-req"); 190 if (length > 0) { 191 TCHECK(ipx[3]); 192 (void)printf(" %u/%d.%d", EXTRACT_32BITS(&ipx[0]), 193 EXTRACT_16BITS(&ipx[2]), EXTRACT_16BITS(&ipx[3])); 194 } 195 break; 196 case 2: 197 (void)printf("ipx-rip-resp"); 198 for (i = 0; i < 50 && length > 0; i++) { 199 TCHECK(ipx[3]); 200 (void)printf(" %u/%d.%d", EXTRACT_32BITS(&ipx[0]), 201 EXTRACT_16BITS(&ipx[2]), EXTRACT_16BITS(&ipx[3])); 202 203 ipx += 4; 204 length -= 8; 205 } 206 break; 207 default: 208 (void)printf("ipx-rip-?%x", command); 209 } 210 return; 211 trunc: 212 printf("[|ipx %d]", length); 213 } 214 215