158 lines
4 KiB
C
158 lines
4 KiB
C
/* packet-hci_h4.c
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* Routines for the Bluetooth HCI H4 dissection
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*
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* Copyright 2002, Christoph Scholz <scholz@cs.uni-bonn.de>
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* From: http://affix.sourceforge.net/archive/ethereal_affix-3.patch
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*
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* Refactored for wireshark checkin
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* Ronnie Sahlberg 2006
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*
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* $Id$
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1998 Gerald Combs
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <epan/packet.h>
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#include "packet-hci_h4.h"
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static int proto_hci_h4 = -1;
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static int hf_hci_h4_type = -1;
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static int hf_hci_h4_direction = -1;
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static gint ett_hci_h4 = -1;
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static dissector_table_t hci_h4_table;
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static dissector_handle_t data_handle;
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static const value_string hci_h4_type_vals[] = {
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{HCI_H4_TYPE_CMD, "HCI Command"},
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{HCI_H4_TYPE_ACL, "ACL Data"},
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{HCI_H4_TYPE_SCO, "SCO Data"},
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{HCI_H4_TYPE_EVT, "HCI Event"},
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{0, NULL }
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};
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static const value_string hci_h4_direction_vals[] = {
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{P2P_DIR_SENT, "Sent"},
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{P2P_DIR_RECV, "Rcvd"},
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{P2P_DIR_UNKNOWN, "Unspecified"},
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{0, NULL}
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};
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static void
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dissect_hci_h4(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
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{
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guint8 type;
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tvbuff_t *next_tvb;
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proto_item *ti=NULL;
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proto_tree *hci_h4_tree=NULL;
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col_set_str(pinfo->cinfo, COL_PROTOCOL, "HCI H4");
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switch (pinfo->p2p_dir) {
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case P2P_DIR_SENT:
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col_add_fstr(pinfo->cinfo, COL_INFO, "Sent ");
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break;
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case P2P_DIR_RECV:
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col_add_fstr(pinfo->cinfo, COL_INFO, "Rcvd ");
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break;
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case P2P_DIR_UNKNOWN:
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break;
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default:
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col_add_fstr(pinfo->cinfo, COL_INFO, "Unknown direction %d ",
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pinfo->p2p_dir);
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break;
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}
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type = tvb_get_guint8(tvb, 0);
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if(tree){
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ti = proto_tree_add_item(tree, proto_hci_h4, tvb, 0, 1, ENC_NA);
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hci_h4_tree = proto_item_add_subtree(ti, ett_hci_h4);
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}
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ti=proto_tree_add_uint(hci_h4_tree, hf_hci_h4_direction, tvb, 0, 0, pinfo->p2p_dir);
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PROTO_ITEM_SET_GENERATED(ti);
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proto_tree_add_item(hci_h4_tree, hf_hci_h4_type,
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tvb, 0, 1, ENC_LITTLE_ENDIAN);
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col_append_fstr(pinfo->cinfo, COL_INFO, "%s",
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val_to_str(type, hci_h4_type_vals, "Unknown HCI packet type 0x%02x"));
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next_tvb = tvb_new_subset_remaining(tvb, 1);
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if(!dissector_try_uint(hci_h4_table, type, next_tvb, pinfo, tree)) {
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call_dissector(data_handle, next_tvb, pinfo, tree);
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}
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}
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void
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proto_register_hci_h4(void)
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{
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static hf_register_info hf[] = {
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{ &hf_hci_h4_type,
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{ "HCI Packet Type", "hci_h4.type",
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FT_UINT8, BASE_HEX, VALS(hci_h4_type_vals), 0x0,
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NULL, HFILL }},
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{ &hf_hci_h4_direction,
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{ "Direction", "hci_h4.direction",
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FT_UINT8, BASE_HEX, VALS(hci_h4_direction_vals), 0x0,
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"HCI Packet Direction Sent/Rcvd", HFILL }},
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};
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static gint *ett[] = {
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&ett_hci_h4,
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};
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proto_hci_h4 = proto_register_protocol("Bluetooth HCI H4",
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"HCI_H4", "hci_h4");
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register_dissector("hci_h4", dissect_hci_h4, proto_hci_h4);
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proto_register_field_array(proto_hci_h4, hf, array_length(hf));
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proto_register_subtree_array(ett, array_length(ett));
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hci_h4_table = register_dissector_table("hci_h4.type",
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"HCI H4 pdu type", FT_UINT8, BASE_HEX);
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}
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void
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proto_reg_handoff_hci_h4(void)
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{
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dissector_handle_t hci_h4_handle;
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data_handle = find_dissector("data");
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hci_h4_handle = find_dissector("hci_h4");
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dissector_add_uint("wtap_encap", WTAP_ENCAP_BLUETOOTH_H4, hci_h4_handle);
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dissector_add_uint("wtap_encap", WTAP_ENCAP_BLUETOOTH_H4_WITH_PHDR, hci_h4_handle);
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}
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