1 /* 2 * Copyright (c) 2007 - Andrey "nording" Chernyak <andrew@nording.ru> 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that: (1) source code distributions 6 * retain the above copyright notice and this paragraph in its entirety, (2) 7 * distributions including binary code include the above copyright notice and 8 * this paragraph in its entirety in the documentation or other materials 9 * provided with the distribution, and (3) all advertising materials mentioning 10 * features or use of this software display the following acknowledgement: 11 * ``This product includes software developed by the University of California, 12 * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of 13 * the University nor the names of its contributors may be used to endorse 14 * or promote products derived from this software without specific prior 15 * written permission. 16 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED 17 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF 18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. 19 * 20 * Format and print Realtek Remote Control Protocol (RRCP) 21 * and Realtek Echo Protocol (RRCP-REP) packets. 22 */ 23 24 #ifndef lint 25 static const char rcsid[] _U_ = 26 "@(#) $Header: /tcpdump/master/tcpdump/print-rrcp.c,v 1.1.2.2 2008-04-11 17:00:00 gianluca Exp $"; 27 #endif 28 29 #ifdef HAVE_CONFIG_H 30 #include "config.h" 31 #endif 32 33 #include <tcpdump-stdinc.h> 34 35 #include <stdio.h> 36 #include <string.h> 37 38 #include "netdissect.h" 39 #include "addrtoname.h" 40 #include "extract.h" 41 #include "ether.h" 42 43 #ifndef ETH_ALEN 44 #define ETH_ALEN 6 45 #endif 46 47 struct rrcp_packet_t 48 { 49 u_int16_t rrcp_ethertype; /* 0x8899 */ 50 u_int8_t rrcp_proto; /* must be 0x01 */ 51 u_int8_t rrcp_opcode:7; /* 0x00 = hello, 0x01 = get, 0x02 = set */ 52 u_int8_t rrcp_isreply:1; /* 0 = request to switch, 1 = reply from switch */ 53 u_int16_t rrcp_authkey; /* 0x2379 by default */ 54 u_int16_t rrcp_reg_addr; /* register address */ 55 u_int32_t rrcp_reg_data; /* register data */ 56 u_int32_t cookie1; 57 u_int32_t cookie2; 58 }; 59 60 struct rrcp_helloreply_packet_t 61 { 62 u_int16_t rrcp_ethertype; /* 0x8899 */ 63 u_int8_t rrcp_proto; /* must be 0x01 */ 64 u_int8_t rrcp_opcode:7; /* 0x00 = hello, 0x01 = get, 0x02 = set */ 65 u_int8_t rrcp_isreply:1; /* 0 = request to switch, 1 = reply from switch */ 66 u_int16_t rrcp_authkey; /* 0x2379 by default */ 67 u_int8_t rrcp_downlink_port; /* */ 68 u_int8_t rrcp_uplink_port; /* */ 69 u_int8_t rrcp_uplink_mac[ETH_ALEN]; /* */ 70 u_int16_t rrcp_chip_id; /* */ 71 u_int32_t rrcp_vendor_id; /* */ 72 }; 73 74 75 /* 76 * Print RRCP requests 77 */ 78 void 79 rrcp_print(netdissect_options *ndo, 80 register const u_char *cp, 81 u_int length _U_) 82 { 83 const struct rrcp_packet_t *rrcp; 84 const struct rrcp_helloreply_packet_t *rrcp_hello; 85 register const struct ether_header *ep; 86 char proto_str[16]; 87 char opcode_str[32]; 88 89 ep = (const struct ether_header *)cp; 90 rrcp = (const struct rrcp_packet_t *)(cp+12); 91 rrcp_hello = (const struct rrcp_helloreply_packet_t *)(cp+12); 92 93 if (rrcp->rrcp_proto==1){ 94 strcpy(proto_str,"RRCP"); 95 }else if ( rrcp->rrcp_proto==2 ){ 96 strcpy(proto_str,"RRCP-REP"); 97 }else{ 98 sprintf(proto_str,"RRCP-0x%02d",rrcp->rrcp_proto); 99 } 100 if (rrcp->rrcp_opcode==0){ 101 strcpy(opcode_str,"hello"); 102 }else if ( rrcp->rrcp_opcode==1 ){ 103 strcpy(opcode_str,"get"); 104 }else if ( rrcp->rrcp_opcode==2 ){ 105 strcpy(opcode_str,"set"); 106 }else{ 107 sprintf(opcode_str,"unknown opcode (0x%02d)",rrcp->rrcp_opcode); 108 } 109 ND_PRINT((ndo, "%s > %s, %s %s", 110 etheraddr_string(ESRC(ep)), 111 etheraddr_string(EDST(ep)), 112 proto_str, rrcp->rrcp_isreply ? "reply" : "query")); 113 if (rrcp->rrcp_proto==1){ 114 ND_PRINT((ndo, ": %s", opcode_str)); 115 } 116 if (rrcp->rrcp_opcode==1 || rrcp->rrcp_opcode==2){ 117 ND_PRINT((ndo, " addr=0x%04x, data=0x%04x", 118 rrcp->rrcp_reg_addr, rrcp->rrcp_reg_data, rrcp->rrcp_authkey)); 119 } 120 if (rrcp->rrcp_proto==1){ 121 ND_PRINT((ndo, ", auth=0x%04x", 122 ntohs(rrcp->rrcp_authkey))); 123 } 124 if (rrcp->rrcp_proto==1 && rrcp->rrcp_opcode==0 && rrcp->rrcp_isreply){ 125 ND_PRINT((ndo, " downlink_port=%d, uplink_port=%d, uplink_mac=%s, vendor_id=%08x ,chip_id=%04x ", 126 rrcp_hello->rrcp_downlink_port, 127 rrcp_hello->rrcp_uplink_port, 128 etheraddr_string(rrcp_hello->rrcp_uplink_mac), 129 rrcp_hello->rrcp_vendor_id, 130 rrcp_hello->rrcp_chip_id)); 131 }else if (rrcp->rrcp_opcode==1 || rrcp->rrcp_opcode==2 || rrcp->rrcp_proto==2){ 132 ND_PRINT((ndo, ", cookie=0x%08x%08x ", 133 rrcp->cookie2, rrcp->cookie1)); 134 } 135 if (!ndo->ndo_vflag) 136 return; 137 } 138