epan/dissectors/packet-hci_h1.c

   1 /* packet-hci_h1.c
   2  * Routines for the Bluetooth HCI h1 dissection
   3  *
   4  * $Id$
   5  *
   6  * Wireshark - Network traffic analyzer
   7  * By Gerald Combs <gerald@wireshark.org>
   8  * Copyright 1998 Gerald Combs
   9  *
  10  * This program is free software; you can redistribute it and/or
  11  * modify it under the terms of the GNU General Public License
  12  * as published by the Free Software Foundation; either version 2
  13  * of the License, or (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  23  */
  24
  25 #ifdef HAVE_CONFIG_H
  26 #include "config.h"
  27 #endif
  28
  29 #include <epan/packet.h>
  30
  31 #include "packet-hci_h1.h"
  32
  33
  34 static int proto_hci_h1 = -1;
  35 static int hf_hci_h1_type = -1;
  36 static int hf_hci_h1_direction = -1;
  37
  38 static gint ett_hci_h1 = -1;
  39
  40 static dissector_table_t hci_h1_table;
  41 static dissector_handle_t data_handle;
  42
  43
  44 static const value_string hci_h1_type_vals[] = {
  45         {BTHCI_CHANNEL_COMMAND, "HCI Command"},
  46         {BTHCI_CHANNEL_ACL, "ACL Data"},
  47         {BTHCI_CHANNEL_SCO, "SCO Data"},
  48         {BTHCI_CHANNEL_EVENT, "HCI Event"},
  49         {0, NULL }
  50 };
  51 static const value_string hci_h1_direction_vals[] = {
  52         {0,     "Sent"},
  53         {1,     "Rcvd"},
  54         {0, NULL}
  55 };
  56
  57 static void
  58 dissect_hci_h1(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
  59 {
  60         guint8 type;
  61         tvbuff_t *next_tvb;
  62         proto_item *ti=NULL;
  63         proto_tree *hci_h1_tree=NULL;
  64
  65         if(check_col(pinfo->cinfo, COL_PROTOCOL))
  66                 col_set_str(pinfo->cinfo, COL_PROTOCOL, "HCI");
  67
  68         if(check_col(pinfo->cinfo, COL_INFO))
  69                 col_clear(pinfo->cinfo, COL_INFO);
  70
  71         type = pinfo->pseudo_header->bthci.channel;
  72
  73         if(tree){
  74                 ti = proto_tree_add_item(tree, proto_hci_h1, tvb, 0, 1, FALSE);
  75                 hci_h1_tree = proto_item_add_subtree(ti, ett_hci_h1);
  76         }
  77
  78         if(check_col(pinfo->cinfo, COL_INFO)){
  79                 col_add_fstr(pinfo->cinfo, COL_INFO, "%s %s",pinfo->p2p_dir==P2P_DIR_SENT?"Sent":"Rcvd",val_to_str(type, hci_h1_type_vals, "Unknown 0x%02x"));
  80         }
  81         ti=proto_tree_add_uint(hci_h1_tree, hf_hci_h1_direction, tvb, 0, 0, pinfo->p2p_dir);
  82         PROTO_ITEM_SET_GENERATED(ti);
  83         proto_item_append_text(hci_h1_tree, " %s %s", val_to_str(pinfo->p2p_dir, hci_h1_direction_vals, "0x%02x"), val_to_str(type, hci_h1_type_vals, "Unknown 0x%02x"));
  84
  85         next_tvb = tvb_new_subset(tvb, 0, -1, -1);
  86         if(!dissector_try_port(hci_h1_table, type, next_tvb, pinfo, tree)) {
  87                 call_dissector(data_handle, next_tvb, pinfo, tree);
  88         }
  89 }
  90
  91
  92 void
  93 proto_register_hci_h1(void)
  94 {
  95         static hf_register_info hf[] = {
  96         { &hf_hci_h1_type,
  97                 { "HCI Packet Type",           "hci_h1.type",
  98                 FT_UINT8, BASE_HEX, VALS(hci_h1_type_vals), 0x0,
  99                 "HCI Packet Type", HFILL }},
 100
 101         { &hf_hci_h1_direction,
 102                 { "Direction",           "hci_h1.direction",
 103                 FT_UINT8, BASE_HEX, VALS(hci_h1_direction_vals), 0x0,
 104                 "HCI Packet Direction Sent/Rcvd", HFILL }},
 105
 106         };
 107
 108         static gint *ett[] = {
 109                 &ett_hci_h1,
 110         };
 111
 112         proto_hci_h1 = proto_register_protocol("Bluetooth HCI",
 113             "HCI_H1", "hci_h1");
 114
 115         register_dissector("hci_h1", dissect_hci_h1, proto_hci_h1);
 116
 117         proto_register_field_array(proto_hci_h1, hf, array_length(hf));
 118         proto_register_subtree_array(ett, array_length(ett));
 119
 120         hci_h1_table = register_dissector_table("hci_h1.type",
 121                 "HCI h1 pdu type", FT_UINT8, BASE_HEX);
 122 }
 123
 124 void
 125 proto_reg_handoff_hci_h1(void)
 126 {
 127         dissector_handle_t hci_h1_handle;
 128
 129         data_handle = find_dissector("data");
 130         hci_h1_handle = find_dissector("hci_h1");
 131         dissector_add("wtap_encap", WTAP_ENCAP_BLUETOOTH_HCI, hci_h1_handle);
 132 }
 133
 134