contrib/tcpdump/print-rrcp.c

   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 }