1e60d63c8c
This saves many dissectors the need to find the data dissector and store a handle to it. There were also some that were finding it, but not using it. For others this was the only reason for their handoff function, so it could be eliminated. Change-Id: I5d3f951ee1daa3d30c060d21bd12bbc881a8027b Reviewed-on: https://code.wireshark.org/review/14530 Petri-Dish: Michael Mann <mmann78@netscape.net> Reviewed-by: Michael Mann <mmann78@netscape.net>
167 lines
4.8 KiB
C
167 lines
4.8 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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* 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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#include "config.h"
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#include <epan/packet.h>
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#include <wiretap/wtap.h>
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#include "packet-bluetooth.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_handle_t hci_h4_handle;
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static dissector_table_t hci_h4_table;
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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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void proto_register_hci_h4(void);
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void proto_reg_handoff_hci_h4(void);
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static gint
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dissect_hci_h4(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data)
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{
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guint8 type;
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tvbuff_t *next_tvb;
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proto_item *main_item;
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proto_tree *main_tree;
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proto_item *sub_item;
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bluetooth_data_t *bluetooth_data;
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bluetooth_data = (bluetooth_data_t *) data;
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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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main_item = proto_tree_add_item(tree, proto_hci_h4, tvb, 0, 1, ENC_NA);
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main_tree = proto_item_add_subtree(main_item, ett_hci_h4);
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sub_item = proto_tree_add_uint(main_tree, hf_hci_h4_direction, tvb, 0, 0, pinfo->p2p_dir);
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PROTO_ITEM_SET_GENERATED(sub_item);
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proto_tree_add_item(main_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_new(hci_h4_table, type, next_tvb, pinfo, tree, TRUE, bluetooth_data)) {
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call_data_dissector(next_tvb, pinfo, tree);
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}
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return 1;
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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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},
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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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};
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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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hci_h4_handle = 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", proto_hci_h4, FT_UINT8, BASE_HEX, DISSECTOR_TABLE_NOT_ALLOW_DUPLICATE);
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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_add_uint("bluetooth.encap", WTAP_ENCAP_BLUETOOTH_H4, hci_h4_handle);
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dissector_add_uint("bluetooth.encap", WTAP_ENCAP_BLUETOOTH_H4_WITH_PHDR, hci_h4_handle);
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}
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/*
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* Editor modelines - http://www.wireshark.org/tools/modelines.html
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*
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* Local variables:
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* c-basic-offset: 4
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* tab-width: 8
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* indent-tabs-mode: nil
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* End:
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*
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* vi: set shiftwidth=4 tabstop=8 expandtab:
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* :indentSize=4:tabSize=8:noTabs=true:
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*/
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