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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  23  */
  24
  25 #include "config.h"
  26
  27 #include <epan/packet.h>
  28 #include <epan/wmem/wmem.h>
  29
  30 #include "packet-bluetooth-hci.h"
  31
  32 static int proto_hci_h1 = -1;
  33
  34 static int hf_hci_h1_direction = -1;
  35
  36 static gint ett_hci_h1 = -1;
  37
  38 static dissector_table_t hci_h1_table;
  39 static dissector_handle_t data_handle;
  40
  41 static wmem_tree_t *chandle_to_bdaddr_table = NULL;
  42 static wmem_tree_t *bdaddr_to_name_table    = NULL;
  43 static wmem_tree_t *localhost_name          = NULL;
  44 static wmem_tree_t *localhost_bdaddr        = NULL;
  45
  46 static const value_string hci_h1_type_vals[] = {
  47     {BTHCI_CHANNEL_COMMAND, "HCI Command"},
  48     {BTHCI_CHANNEL_ACL,     "ACL Data"},
  49     {BTHCI_CHANNEL_SCO,     "SCO Data"},
  50     {BTHCI_CHANNEL_EVENT,   "HCI Event"},
  51     {0, NULL }
  52 };
  53 static const value_string hci_h1_direction_vals[] = {
  54     {-1, "Unknown"},
  55     {0,    "Sent"},
  56     {1,    "Rcvd"},
  57     {0, NULL}
  58 };
  59
  60 void proto_register_hci_h1(void);
  61 void proto_reg_handoff_hci_h1(void);
  62
  63 static gint
  64 dissect_hci_h1(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_)
  65 {
  66     guint8      type;
  67     tvbuff_t   *next_tvb;
  68     proto_item *ti = NULL;
  69     proto_tree *hci_h1_tree = NULL;
  70     hci_data_t *hci_data;
  71
  72     col_set_str(pinfo->cinfo, COL_PROTOCOL, "HCI");
  73
  74     col_clear(pinfo->cinfo, COL_INFO);
  75
  76     type = pinfo->pseudo_header->bthci.channel;
  77
  78     if (tree) {
  79         ti = proto_tree_add_item(tree, proto_hci_h1, tvb, 0, 0, ENC_NA);
  80         hci_h1_tree = proto_item_add_subtree(ti, ett_hci_h1);
  81
  82         if(pinfo->p2p_dir == P2P_DIR_SENT ||
  83            pinfo->p2p_dir == P2P_DIR_RECV)
  84             proto_item_append_text(hci_h1_tree, " %s %s",
  85                            val_to_str(pinfo->p2p_dir,
  86                               hci_h1_direction_vals, "Unknown: %d"),
  87                            val_to_str(type,
  88                               hci_h1_type_vals,
  89                               "Unknown 0x%02x"));
  90         else
  91             proto_item_append_text(hci_h1_tree, " %s",
  92                            val_to_str(type,
  93                               hci_h1_type_vals,
  94                               "Unknown 0x%02x"));
  95     }
  96
  97     if(pinfo->p2p_dir == P2P_DIR_SENT ||
  98        pinfo->p2p_dir == P2P_DIR_RECV)
  99         col_add_fstr(pinfo->cinfo, COL_INFO, "%s %s",
 100                  val_to_str(pinfo->p2p_dir,
 101                     hci_h1_direction_vals, "Unknown: %d"),
 102                      val_to_str(type, hci_h1_type_vals,
 103                     "Unknown 0x%02x"));
 104     else
 105         col_add_fstr(pinfo->cinfo, COL_INFO, "%s",
 106                  val_to_str(type, hci_h1_type_vals,
 107                     "Unknown 0x%02x"));
 108
 109     hci_data = wmem_new(wmem_packet_scope(), hci_data_t);
 110     hci_data->interface_id = HCI_INTERFACE_H4;
 111     hci_data->adapter_id = HCI_ADAPTER_DEFAULT;
 112     hci_data->chandle_to_bdaddr_table = chandle_to_bdaddr_table;
 113     hci_data->bdaddr_to_name_table = bdaddr_to_name_table;
 114     hci_data->localhost_bdaddr = localhost_bdaddr;
 115     hci_data->localhost_name = localhost_name;
 116
 117     pinfo->ptype = PT_BLUETOOTH;
 118
 119     ti = proto_tree_add_int(hci_h1_tree, hf_hci_h1_direction, tvb, 0, 0, pinfo->p2p_dir);
 120     PROTO_ITEM_SET_GENERATED(ti);
 121
 122     next_tvb = tvb_new_subset_remaining(tvb, 0);
 123     if (!dissector_try_uint_new(hci_h1_table, type, next_tvb, pinfo, tree, TRUE, hci_data)) {
 124         call_dissector(data_handle, next_tvb, pinfo, tree);
 125     }
 126
 127     return tvb_length(tvb);
 128 }
 129
 130
 131 void
 132 proto_register_hci_h1(void)
 133 {
 134     static hf_register_info hf[] = {
 135         { &hf_hci_h1_direction,
 136             { "Direction",           "hci_h1.direction",
 137             FT_INT8, BASE_DEC, VALS(hci_h1_direction_vals), 0x0,
 138             "HCI Packet Direction Sent/Rcvd/Unknown", HFILL }
 139         }
 140     };
 141
 142     static gint *ett[] = {
 143         &ett_hci_h1,
 144     };
 145
 146     proto_hci_h1 = proto_register_protocol("Bluetooth HCI H1",
 147             "HCI_H1", "hci_h1");
 148
 149     new_register_dissector("hci_h1", dissect_hci_h1, proto_hci_h1);
 150
 151     proto_register_field_array(proto_hci_h1, hf, array_length(hf));
 152     proto_register_subtree_array(ett, array_length(ett));
 153
 154     hci_h1_table = register_dissector_table("hci_h1.type",
 155             "HCI h1 pdu type", FT_UINT8, BASE_HEX);
 156
 157     chandle_to_bdaddr_table = wmem_tree_new_autoreset(wmem_epan_scope(), wmem_file_scope()); /* adapter, chandle: bdaddr */
 158     bdaddr_to_name_table = wmem_tree_new_autoreset(wmem_epan_scope(), wmem_file_scope()); /* bdaddr: name */
 159     localhost_bdaddr = wmem_tree_new_autoreset(wmem_epan_scope(), wmem_file_scope()); /* adaper, frame: bdaddr */
 160     localhost_name = wmem_tree_new_autoreset(wmem_epan_scope(), wmem_file_scope()); /* adaper, frame: name */
 161 }
 162
 163 void
 164 proto_reg_handoff_hci_h1(void)
 165 {
 166     dissector_handle_t hci_h1_handle;
 167
 168     data_handle = find_dissector("data");
 169     hci_h1_handle = find_dissector("hci_h1");
 170     dissector_add_uint("wtap_encap", WTAP_ENCAP_BLUETOOTH_HCI, hci_h1_handle);
 171 }
 172
 173 /*
 174  * Editor modelines  -  http://www.wireshark.org/tools/modelines.html
 175  *
 176  * Local variables:
 177  * c-basic-offset: 4
 178  * tab-width: 8
 179  * indent-tabs-mode: nil
 180  * End:
 181  *
 182  * vi: set shiftwidth=4 tabstop=8 expandtab:
 183  * :indentSize=4:tabSize=8:noTabs=true:
 184  */