forked from osmocom/wireshark
![Kovarththanan Rajaratnam](/assets/img/avatar_default.png)
1) The tvb + name (aka. data_source) is only used when the protocol tree is visible The current implementation of add_new_data_source() doesn't take this into account and simply allocates a data_source regardless. This is what packet_add_new_data_source() tries to rectify. A couple of dissectors have already been switched over to the new packet_add_new_data_source(). Many are still missing. Help appreciated! svn path=/trunk/; revision=29427
1734 lines
57 KiB
C
1734 lines
57 KiB
C
/* packet-btl2cap.c
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* Routines for the Bluetooth L2CAP dissection
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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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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 <glib.h>
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#include <epan/packet.h>
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#include <etypes.h>
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#include <epan/emem.h>
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#include <epan/expert.h>
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#include "packet-bthci_acl.h"
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#include "packet-btl2cap.h"
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/* Initialize the protocol and registered fields */
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static int proto_btl2cap = -1;
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static int hf_btl2cap_length = -1;
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static int hf_btl2cap_cid = -1;
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static int hf_btl2cap_payload = -1;
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static int hf_btl2cap_command = -1;
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static int hf_btl2cap_cmd_code = -1;
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static int hf_btl2cap_cmd_ident = -1;
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static int hf_btl2cap_cmd_length = -1;
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static int hf_btl2cap_cmd_data = -1;
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static int hf_btl2cap_psm = -1;
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static int hf_btl2cap_scid = -1;
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static int hf_btl2cap_dcid = -1;
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static int hf_btl2cap_icid = -1;
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static int hf_btl2cap_controller = -1;
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static int hf_btl2cap_dcontroller = -1;
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static int hf_btl2cap_result = -1;
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static int hf_btl2cap_move_result = -1;
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static int hf_btl2cap_move_confirmation_result = -1;
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static int hf_btl2cap_status = -1;
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static int hf_btl2cap_rej_reason = -1;
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static int hf_btl2cap_sig_mtu = -1;
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static int hf_btl2cap_info_mtu = -1;
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static int hf_btl2cap_info_flowcontrol = -1;
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static int hf_btl2cap_info_retransmission = -1;
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static int hf_btl2cap_info_bidirqos = -1;
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static int hf_btl2cap_info_enh_retransmission = -1;
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static int hf_btl2cap_info_streaming = -1;
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static int hf_btl2cap_info_fcs = -1;
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static int hf_btl2cap_info_flow_spec = -1;
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static int hf_btl2cap_info_fixedchan = -1;
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static int hf_btl2cap_info_fixedchans = -1;
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static int hf_btl2cap_info_fixedchans_null = -1;
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static int hf_btl2cap_info_fixedchans_signal = -1;
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static int hf_btl2cap_info_fixedchans_connless = -1;
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static int hf_btl2cap_info_fixedchans_amp_man = -1;
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static int hf_btl2cap_info_fixedchans_amp_test = -1;
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static int hf_btl2cap_info_window = -1;
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static int hf_btl2cap_info_unicast = -1;
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static int hf_btl2cap_info_type = -1;
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static int hf_btl2cap_info_result = -1;
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static int hf_btl2cap_continuation_flag = -1;
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static int hf_btl2cap_configuration_result = -1;
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static int hf_btl2cap_info_extfeatures = -1;
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static int hf_btl2cap_option = -1;
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static int hf_btl2cap_option_type = -1;
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static int hf_btl2cap_option_length = -1;
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static int hf_btl2cap_option_mtu = -1;
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static int hf_btl2cap_option_flushTO = -1;
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static int hf_btl2cap_option_flush_to_us = -1;
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static int hf_btl2cap_option_flags = -1;
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static int hf_btl2cap_option_service_type = -1;
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static int hf_btl2cap_option_tokenrate = -1;
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static int hf_btl2cap_option_tokenbucketsize = -1;
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static int hf_btl2cap_option_peakbandwidth = -1;
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static int hf_btl2cap_option_latency = -1;
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static int hf_btl2cap_option_delayvariation = -1;
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static int hf_btl2cap_option_retransmissionmode = -1;
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static int hf_btl2cap_option_txwindow = -1;
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static int hf_btl2cap_option_maxtransmit = -1;
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static int hf_btl2cap_option_retransmittimeout = -1;
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static int hf_btl2cap_option_monitortimeout = -1;
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static int hf_btl2cap_option_mps = -1;
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static int hf_btl2cap_option_fcs = -1;
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static int hf_btl2cap_option_window = -1;
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static int hf_btl2cap_option_identifier = -1;
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static int hf_btl2cap_option_sdu_size = -1;
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static int hf_btl2cap_option_sdu_arrival_time = -1;
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static int hf_btl2cap_option_access_latency = -1;
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static int hf_btl2cap_control = -1;
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static int hf_btl2cap_control_sar = -1;
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static int hf_btl2cap_control_reqseq = -1;
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static int hf_btl2cap_control_txseq = -1;
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static int hf_btl2cap_control_retransmissiondisable = -1;
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static int hf_btl2cap_control_supervisory = -1;
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static int hf_btl2cap_control_type = -1;
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static int hf_btl2cap_fcs = -1;
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static int hf_btl2cap_sdulength = -1;
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static int hf_btl2cap_continuation_to = -1;
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static int hf_btl2cap_reassembled_in = -1;
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/* Initialize the subtree pointers */
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static gint ett_btl2cap = -1;
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static gint ett_btl2cap_cmd = -1;
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static gint ett_btl2cap_option = -1;
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static gint ett_btl2cap_extfeatures = -1;
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static gint ett_btl2cap_fixedchans = -1;
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static gint ett_btl2cap_control = -1;
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/* Initialize dissector table */
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dissector_table_t l2cap_psm_dissector_table;
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dissector_table_t l2cap_cid_dissector_table;
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/* This table maps cid values to psm values.
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* The same table is used both for SCID and DCID.
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* For received CIDs we mask the cid with 0x8000 in this table
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*/
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static emem_tree_t *cid_to_psm_table = NULL;
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typedef struct _config_data_t {
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guint8 mode;
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guint8 txwindow;
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emem_tree_t *start_fragments; /* indexed by pinfo->fd->num */
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} config_data_t;
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typedef struct _psm_data_t {
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guint16 psm;
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config_data_t in;
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config_data_t out;
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} psm_data_t;
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static const value_string command_code_vals[] = {
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{ 0x01, "Command Reject" },
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{ 0x02, "Connection Request" },
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{ 0x03, "Connection Response" },
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{ 0x04, "Configure Request" },
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{ 0x05, "Configure Response" },
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{ 0x06, "Disconnect Request" },
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{ 0x07, "Disconnect Response" },
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{ 0x08, "Echo Request" },
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{ 0x09, "Echo Response" },
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{ 0x0A, "Information Request" },
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{ 0x0B, "Information Response" },
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{ 0x0C, "Create Channel Request" },
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{ 0x0D, "Create Channel Response" },
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{ 0x0E, "Move Channel Request" },
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{ 0x0F, "Move Channel Response" },
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{ 0x10, "Move Channel Confirmation" },
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{ 0x11, "Move Channel Confirmation Response" },
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{ 0, NULL }
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};
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static const value_string psm_vals[] = {
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{ 0x0001, "SDP" },
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{ 0x0003, "RFCOMM" },
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{ 0x0005, "TCS-BIN" },
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{ 0x0007, "TCS-BIN-CORDLESS" },
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{ 0x000F, "BNEP" },
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{ 0x0011, "HID_CONTROL" },
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{ 0x0013, "HID_INTERRUPT" },
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{ 0x0015, "UPnP" },
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{ 0x0017, "AVCTP" },
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{ 0x0019, "AVDTP" },
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{ 0x001D, "UDI_C-Plane" },
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{ 0, NULL }
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};
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static const value_string result_vals[] = {
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{ 0x0000, "Connection successful" },
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{ 0x0001, "Connection pending" },
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{ 0x0002, "Connection refused - PSM not supported" },
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{ 0x0003, "Connection refused - security block" },
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{ 0x0004, "Connection refused - no resources available" },
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{ 0x0005, "Connection refused - Controller ID not supported" },
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{ 0, NULL }
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};
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static const value_string move_result_vals[] = {
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{ 0x0000, "Move success" },
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{ 0x0001, "Move pending" },
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{ 0x0002, "Move refused - Controller ID not supported" },
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{ 0x0003, "Move refused - New Controller ID is same as old" },
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{ 0x0004, "Move refused - Configuration not supported" },
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{ 0x0005, "Move refused - Move Channel collision" },
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{ 0x0006, "Move refused - Channel not allowed to be moved" },
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{ 0, NULL }
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};
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static const value_string move_result_confirmation_vals[] = {
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{ 0x0000, "Move success - both sides succeed" },
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{ 0x0001, "Move failure - one or both sides refuse" },
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{ 0, NULL }
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};
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static const value_string configuration_result_vals[] = {
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{ 0x0000, "Success"},
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{ 0x0001, "Failure - unacceptable parameters" },
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{ 0x0002, "Failure - reject (no reason provided)" },
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{ 0x0003, "Failure - unknown options" },
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{ 0x0004, "Pending" },
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{ 0x0005, "Failure - flow spec rejected" },
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{ 0, NULL }
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};
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static const value_string status_vals[] = {
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{ 0x0000, "No further information available" },
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{ 0x0001, "Authentication pending" },
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{ 0x0002, "Authorization pending" },
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{ 0, NULL }
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};
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static const value_string reason_vals[] = {
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{ 0x0000, "Command not understood" },
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{ 0x0001, "Signaling MTU exceeded" },
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{ 0x0002, "Invalid CID in request" },
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{ 0, NULL }
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};
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static const value_string info_type_vals[] = {
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{ 0x0001, "Connectionless MTU" },
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{ 0x0002, "Extended Features Mask" },
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{ 0x0003, "Fixed Channels Supported" },
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{ 0, NULL }
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};
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static const value_string info_result_vals[] = {
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{ 0x0000, "Success" },
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{ 0x0001, "Not Supported" },
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{ 0, NULL }
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};
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static const value_string option_servicetype_vals[] = {
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{ 0x00, "No traffic" },
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{ 0x01, "Best effort (Default)" },
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{ 0x02, "Guaranteed" },
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{ 0, NULL }
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};
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static const value_string option_type_vals[] = {
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{ 0x01, "Maximum Transmission Unit" },
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{ 0x02, "Flush Timeout" },
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{ 0x03, "Quality of Service" },
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{ 0x04, "Retransmission and Flow Control" },
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{ 0x05, "FCS" },
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{ 0x06, "Extended Flow Specification" },
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{ 0x07, "Extended Window Size" },
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{ 0, NULL }
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};
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static const value_string option_retransmissionmode_vals[] = {
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{ 0x00, "Basic Mode" },
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{ 0x01, "Retransmission Mode" },
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{ 0x02, "Flow Control Mode" },
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{ 0x03, "Enhanced Retransmission Mode" },
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{ 0x04, "Streaming Mode" },
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{ 0, NULL }
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};
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static const value_string control_sar_vals[] = {
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{ 0x00, "Unsegmented" },
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{ 0x01, "Start" },
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{ 0x02, "End" },
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{ 0x03, "Continuation" },
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{ 0, NULL }
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};
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static const value_string control_supervisory_vals[] = {
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{ 0x00, "RR" },
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{ 0x01, "REJ" },
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{ 0x02, "RNR" },
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{ 0x03, "SREJ" },
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{ 0, NULL }
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};
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static const value_string control_type_vals[] = {
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{ 0x00, "I-Frame" },
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{ 0x01, "S-Frame" },
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{ 0, NULL }
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};
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static const value_string option_fcs_vals[] = {
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{ 0x00, "No FCS" },
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{ 0x01, "16-bit FCS" },
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{ 0, NULL }
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};
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static int
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dissect_comrej(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree)
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{
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guint16 reason;
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reason = tvb_get_letohs(tvb, offset);
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proto_tree_add_item(tree, hf_btl2cap_rej_reason, tvb, offset, 2, TRUE);
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offset+=2;
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switch(reason){
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case 0x0000: /* Command not understood */
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break;
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case 0x0001: /* Signaling MTU exceeded */
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proto_tree_add_item(tree, hf_btl2cap_sig_mtu, tvb, offset, 2, TRUE);
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offset+=2;
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break;
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case 0x0002: /* Invalid CID in requets */
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proto_tree_add_item(tree, hf_btl2cap_scid, tvb, offset, 2, TRUE);
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offset+=2;
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proto_tree_add_item(tree, hf_btl2cap_dcid, tvb, offset, 2, TRUE);
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offset+=2;
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break;
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default:
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break;
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}
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return offset;
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}
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static int
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dissect_connrequest(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree)
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{
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guint16 scid, psm;
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psm_data_t *psm_data;
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psm=tvb_get_letohs(tvb, offset);
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proto_tree_add_item(tree, hf_btl2cap_psm, tvb, offset, 2, TRUE);
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offset+=2;
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scid=tvb_get_letohs(tvb, offset);
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proto_tree_add_item(tree, hf_btl2cap_scid, tvb, offset, 2, TRUE);
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offset+=2;
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if (pinfo->fd->flags.visited == 0) {
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psm_data=se_alloc(sizeof(psm_data_t));
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psm_data->psm=psm;
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psm_data->in.mode=0;
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psm_data->in.txwindow=0;
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psm_data->in.start_fragments=se_tree_create_non_persistent(EMEM_TREE_TYPE_RED_BLACK, "bthci_l2cap fragment starts");
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psm_data->out.mode=0;
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psm_data->out.txwindow=0;
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psm_data->out.start_fragments=se_tree_create_non_persistent(EMEM_TREE_TYPE_RED_BLACK, "bthci_l2cap fragment starts");
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se_tree_insert32(cid_to_psm_table, scid|((pinfo->p2p_dir == P2P_DIR_RECV)?0x8000:0x0000), psm_data);
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}
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return offset;
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}
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static int
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dissect_chanrequest(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree)
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{
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guint16 scid, psm;
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psm_data_t *psm_data;
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psm=tvb_get_letohs(tvb, offset);
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proto_tree_add_item(tree, hf_btl2cap_psm, tvb, offset, 2, TRUE);
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offset+=2;
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scid=tvb_get_letohs(tvb, offset);
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proto_tree_add_item(tree, hf_btl2cap_scid, tvb, offset, 2, TRUE);
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offset+=2;
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proto_tree_add_item(tree, hf_btl2cap_controller, tvb, offset, 1, TRUE);
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offset+=1;
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if (pinfo->fd->flags.visited == 0) {
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psm_data=se_alloc(sizeof(psm_data_t));
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psm_data->psm=psm;
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psm_data->in.mode=0;
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psm_data->in.txwindow=0;
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psm_data->in.start_fragments=se_tree_create_non_persistent(EMEM_TREE_TYPE_RED_BLACK, "bthci_l2cap fragment starts");
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psm_data->out.mode=0;
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psm_data->out.txwindow=0;
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psm_data->out.start_fragments=se_tree_create_non_persistent(EMEM_TREE_TYPE_RED_BLACK, "bthci_l2cap fragment starts");
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se_tree_insert32(cid_to_psm_table, scid|((pinfo->p2p_dir == P2P_DIR_RECV)?0x8000:0x0000), psm_data);
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}
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return offset;
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}
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static int
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dissect_movechanrequest(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree)
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{
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proto_tree_add_item(tree, hf_btl2cap_icid, tvb, offset, 2, TRUE);
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offset+=2;
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proto_tree_add_item(tree, hf_btl2cap_dcontroller, tvb, offset, 1, TRUE);
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offset+=1;
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return offset;
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}
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static int
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dissect_options(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree, int length, config_data_t *config_data)
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{
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proto_item *ti_option=NULL;
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proto_tree *ti_option_subtree=NULL;
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guint8 option_type, option_length;
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while(length>0){
|
|
option_type = tvb_get_guint8(tvb, offset);
|
|
option_length = tvb_get_guint8(tvb, offset+1);
|
|
|
|
ti_option = proto_tree_add_none_format(tree,
|
|
hf_btl2cap_option, tvb,
|
|
offset, option_length + 2,
|
|
"Option: ");
|
|
ti_option_subtree = proto_item_add_subtree(ti_option, ett_btl2cap_option);
|
|
proto_tree_add_item(ti_option_subtree, hf_btl2cap_option_type, tvb, offset, 1, TRUE);
|
|
proto_tree_add_item(ti_option_subtree, hf_btl2cap_option_length, tvb, offset+1, 1, TRUE);
|
|
offset+=2;
|
|
|
|
if(option_length>0){
|
|
switch(option_type){
|
|
case 0x01: /* MTU */
|
|
proto_tree_add_item(ti_option_subtree, hf_btl2cap_option_mtu, tvb, offset, 2, TRUE);
|
|
offset+=2;
|
|
|
|
proto_item_append_text(ti_option, "MTU");
|
|
break;
|
|
|
|
case 0x02: /* Flush timeout */
|
|
proto_tree_add_item(ti_option_subtree, hf_btl2cap_option_flushTO, tvb, offset, 2, TRUE);
|
|
offset+=2;
|
|
|
|
proto_item_append_text(ti_option, "Flush Timeout");
|
|
break;
|
|
|
|
case 0x03: /* QOS */
|
|
proto_tree_add_item(ti_option_subtree, hf_btl2cap_option_flags, tvb, offset, 1, TRUE);
|
|
offset++;
|
|
|
|
proto_tree_add_item(ti_option_subtree, hf_btl2cap_option_service_type, tvb, offset, 1, TRUE);
|
|
offset++;
|
|
|
|
proto_tree_add_item(ti_option_subtree, hf_btl2cap_option_tokenrate, tvb, offset, 4, TRUE);
|
|
offset+=4;
|
|
|
|
proto_tree_add_item(ti_option_subtree, hf_btl2cap_option_tokenbucketsize, tvb, offset, 4, TRUE);
|
|
offset+=4;
|
|
|
|
proto_tree_add_item(ti_option_subtree, hf_btl2cap_option_peakbandwidth, tvb, offset, 4, TRUE);
|
|
offset+=4;
|
|
|
|
proto_tree_add_item(ti_option_subtree, hf_btl2cap_option_latency, tvb, offset, 4, TRUE);
|
|
offset+=4;
|
|
|
|
proto_tree_add_item(ti_option_subtree, hf_btl2cap_option_delayvariation, tvb, offset, 4, TRUE);
|
|
offset+=4;
|
|
|
|
proto_item_append_text(ti_option, "QOS");
|
|
break;
|
|
|
|
case 0x04: /* Retransmission and Flow Control*/
|
|
if(config_data)
|
|
{
|
|
config_data->mode = tvb_get_guint8(tvb, offset);
|
|
config_data->txwindow = tvb_get_guint8(tvb, offset+1);
|
|
}
|
|
proto_tree_add_item(ti_option_subtree, hf_btl2cap_option_retransmissionmode, tvb, offset, 1, TRUE);
|
|
offset++;
|
|
|
|
proto_tree_add_item(ti_option_subtree, hf_btl2cap_option_txwindow, tvb, offset, 1, TRUE);
|
|
offset++;
|
|
|
|
proto_tree_add_item(ti_option_subtree, hf_btl2cap_option_maxtransmit, tvb, offset, 1, TRUE);
|
|
offset++;
|
|
|
|
proto_tree_add_item(ti_option_subtree, hf_btl2cap_option_retransmittimeout, tvb, offset, 2, TRUE);
|
|
offset+= 2;
|
|
|
|
proto_tree_add_item(ti_option_subtree, hf_btl2cap_option_monitortimeout, tvb, offset, 2, TRUE);
|
|
offset+= 2;
|
|
|
|
proto_tree_add_item(ti_option_subtree, hf_btl2cap_option_mps, tvb, offset, 2, TRUE);
|
|
offset+= 2;
|
|
|
|
proto_item_append_text(ti_option, "Retransmission and Flow Control");
|
|
break;
|
|
|
|
case 0x05: /* FCS */
|
|
proto_tree_add_item(ti_option_subtree, hf_btl2cap_option_fcs, tvb, offset, 1, TRUE);
|
|
offset+=1;
|
|
|
|
proto_item_append_text(ti_option, "FCS");
|
|
break;
|
|
|
|
case 0x06: /* Extended Flow Specification */
|
|
proto_tree_add_item(ti_option_subtree, hf_btl2cap_option_identifier, tvb, offset, 1, TRUE);
|
|
offset++;
|
|
|
|
proto_tree_add_item(ti_option_subtree, hf_btl2cap_option_service_type, tvb, offset, 1, TRUE);
|
|
offset++;
|
|
|
|
proto_tree_add_item(ti_option_subtree, hf_btl2cap_option_sdu_size, tvb, offset, 2, TRUE);
|
|
offset+=2;
|
|
|
|
proto_tree_add_item(ti_option_subtree, hf_btl2cap_option_sdu_arrival_time, tvb, offset, 4, TRUE);
|
|
offset+=4;
|
|
|
|
proto_tree_add_item(ti_option_subtree, hf_btl2cap_option_access_latency, tvb, offset, 4, TRUE);
|
|
offset+=4;
|
|
|
|
proto_tree_add_item(ti_option_subtree, hf_btl2cap_option_flush_to_us, tvb, offset, 4, TRUE);
|
|
offset+=4;
|
|
|
|
proto_item_append_text(ti_option, "Extended Flow Specification");
|
|
break;
|
|
|
|
case 0x07: /* Extended Window Size */
|
|
proto_tree_add_item(ti_option_subtree, hf_btl2cap_option_window, tvb, offset, 2, TRUE);
|
|
offset+=2;
|
|
|
|
proto_item_append_text(ti_option, "Extended Window Size");
|
|
break;
|
|
|
|
default:
|
|
proto_item_append_text(ti_option, "unknown");
|
|
offset+=option_length;
|
|
break;
|
|
}
|
|
}
|
|
length -= (option_length + 2);
|
|
}
|
|
return offset;
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
dissect_configrequest(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree, guint16 length)
|
|
{
|
|
psm_data_t *psm_data;
|
|
config_data_t *config_data;
|
|
guint16 dcid;
|
|
|
|
dcid = tvb_get_letohs(tvb, offset);
|
|
psm_data=se_tree_lookup32(cid_to_psm_table, dcid|((pinfo->p2p_dir==P2P_DIR_RECV)?0x0000:0x8000));
|
|
proto_tree_add_item(tree, hf_btl2cap_dcid, tvb, offset, 2, TRUE);
|
|
offset+=2;
|
|
|
|
proto_tree_add_item(tree, hf_btl2cap_continuation_flag, tvb, offset, 2, TRUE);
|
|
offset+=2;
|
|
|
|
if(tvb_length_remaining(tvb, offset)){
|
|
if (psm_data)
|
|
if(pinfo->p2p_dir==P2P_DIR_RECV)
|
|
config_data = &(psm_data->out);
|
|
else
|
|
config_data = &(psm_data->in);
|
|
else
|
|
config_data = NULL;
|
|
offset=dissect_options(tvb, offset, pinfo, tree, length - 4, config_data);
|
|
}
|
|
|
|
return offset;
|
|
}
|
|
|
|
|
|
static int
|
|
dissect_inforequest(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree)
|
|
{
|
|
proto_tree_add_item(tree, hf_btl2cap_info_type, tvb, offset, 2, TRUE);
|
|
offset+=2;
|
|
|
|
return offset;
|
|
}
|
|
|
|
static int
|
|
dissect_inforesponse(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree)
|
|
{
|
|
guint16 info_type;
|
|
proto_item *ti_features=NULL;
|
|
proto_tree *ti_features_subtree=NULL;
|
|
guint32 features;
|
|
|
|
info_type=tvb_get_letohs(tvb, offset);
|
|
proto_tree_add_item(tree, hf_btl2cap_info_type, tvb, offset, 2, TRUE);
|
|
offset+=2;
|
|
|
|
proto_tree_add_item(tree, hf_btl2cap_info_result, tvb, offset, 2, TRUE);
|
|
offset+=2;
|
|
|
|
if(tvb_length_remaining(tvb, offset)) {
|
|
switch(info_type){
|
|
case 0x0001: /* Connectionless MTU */
|
|
proto_tree_add_item(tree, hf_btl2cap_info_mtu, tvb, offset, 2, TRUE);
|
|
offset+=2;
|
|
|
|
break;
|
|
case 0x0002: /* Extended Features */
|
|
ti_features = proto_tree_add_none_format(tree,
|
|
hf_btl2cap_info_extfeatures, tvb,
|
|
offset, 4,
|
|
"Features: ");
|
|
ti_features_subtree = proto_item_add_subtree(ti_features, ett_btl2cap_extfeatures);
|
|
features = tvb_get_letohl(tvb, offset);
|
|
if(features & 0x1)
|
|
proto_item_append_text(ti_features, "FlowControl ");
|
|
if(features & 0x2)
|
|
proto_item_append_text(ti_features, "Retransmission ");
|
|
if(features & 0x4)
|
|
proto_item_append_text(ti_features, "BiDirQOS ");
|
|
if(features & 0x8)
|
|
proto_item_append_text(ti_features, "EnhRetransmission ");
|
|
if(features & 0x10)
|
|
proto_item_append_text(ti_features, "Streaming ");
|
|
if(features & 0x20)
|
|
proto_item_append_text(ti_features, "FCS ");
|
|
if(features & 0x40)
|
|
proto_item_append_text(ti_features, "FlowSpec ");
|
|
if(features & 0x80)
|
|
proto_item_append_text(ti_features, "FixedChan ");
|
|
if(features & 0x100)
|
|
proto_item_append_text(ti_features, "WindowSize ");
|
|
if(features & 0x200)
|
|
proto_item_append_text(ti_features, "Unicast ");
|
|
proto_tree_add_item(ti_features_subtree, hf_btl2cap_info_flowcontrol, tvb, offset, 4, TRUE);
|
|
proto_tree_add_item(ti_features_subtree, hf_btl2cap_info_retransmission, tvb, offset, 4, TRUE);
|
|
proto_tree_add_item(ti_features_subtree, hf_btl2cap_info_bidirqos, tvb, offset, 4, TRUE);
|
|
proto_tree_add_item(ti_features_subtree, hf_btl2cap_info_enh_retransmission, tvb, offset, 4, TRUE);
|
|
proto_tree_add_item(ti_features_subtree, hf_btl2cap_info_streaming, tvb, offset, 4, TRUE);
|
|
proto_tree_add_item(ti_features_subtree, hf_btl2cap_info_fcs, tvb, offset, 4, TRUE);
|
|
proto_tree_add_item(ti_features_subtree, hf_btl2cap_info_flow_spec, tvb, offset, 4, TRUE);
|
|
proto_tree_add_item(ti_features_subtree, hf_btl2cap_info_fixedchan, tvb, offset, 4, TRUE);
|
|
proto_tree_add_item(ti_features_subtree, hf_btl2cap_info_window, tvb, offset, 4, TRUE);
|
|
proto_tree_add_item(ti_features_subtree, hf_btl2cap_info_unicast, tvb, offset, 4, TRUE);
|
|
offset+=4;
|
|
|
|
break;
|
|
|
|
case 0x0003: /* Fixed Channels Supported */
|
|
ti_features = proto_tree_add_none_format(tree,
|
|
hf_btl2cap_info_fixedchans, tvb,
|
|
offset, 8,
|
|
"Fixed Channels Supported:");
|
|
ti_features_subtree = proto_item_add_subtree(ti_features, ett_btl2cap_fixedchans);
|
|
proto_tree_add_item(ti_features_subtree, hf_btl2cap_info_fixedchans_null, tvb, offset, 4, TRUE);
|
|
proto_tree_add_item(ti_features_subtree, hf_btl2cap_info_fixedchans_signal, tvb, offset, 4, TRUE);
|
|
proto_tree_add_item(ti_features_subtree, hf_btl2cap_info_fixedchans_connless, tvb, offset, 4, TRUE);
|
|
proto_tree_add_item(ti_features_subtree, hf_btl2cap_info_fixedchans_amp_man, tvb, offset, 4, TRUE);
|
|
offset+=4;
|
|
proto_tree_add_item(ti_features_subtree, hf_btl2cap_info_fixedchans_amp_test, tvb, offset, 4, TRUE);
|
|
offset+=4;
|
|
|
|
break;
|
|
|
|
default:
|
|
proto_tree_add_item(tree, hf_btl2cap_cmd_data, tvb, offset, -1, TRUE);
|
|
offset+=tvb_length_remaining(tvb, offset);
|
|
|
|
break;
|
|
}
|
|
}
|
|
|
|
return offset;
|
|
}
|
|
|
|
static int
|
|
dissect_configresponse(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree, guint16 length)
|
|
{
|
|
psm_data_t *psm_data;
|
|
config_data_t *config_data;
|
|
guint16 scid;
|
|
|
|
scid = tvb_get_letohs(tvb, offset);
|
|
psm_data=se_tree_lookup32(cid_to_psm_table, scid|((pinfo->p2p_dir==P2P_DIR_RECV)?0x0000:0x8000));
|
|
proto_tree_add_item(tree, hf_btl2cap_scid, tvb, offset, 2, TRUE);
|
|
offset+=2;
|
|
|
|
proto_tree_add_item(tree, hf_btl2cap_continuation_flag, tvb, offset, 2, TRUE);
|
|
offset+=2;
|
|
|
|
proto_tree_add_item(tree, hf_btl2cap_configuration_result, tvb, offset, 2, TRUE);
|
|
offset+=2;
|
|
|
|
if(tvb_length_remaining(tvb, offset)){
|
|
if (psm_data)
|
|
if(pinfo->p2p_dir==P2P_DIR_RECV)
|
|
config_data = &(psm_data->out);
|
|
else
|
|
config_data = &(psm_data->in);
|
|
else
|
|
config_data = NULL;
|
|
offset=dissect_options(tvb, offset, pinfo, tree, length - 6, config_data);
|
|
}
|
|
|
|
return offset;
|
|
}
|
|
|
|
static int
|
|
dissect_connresponse(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree)
|
|
{
|
|
guint16 scid, dcid;
|
|
psm_data_t *psm_data;
|
|
|
|
dcid = tvb_get_letohs(tvb, offset);
|
|
proto_tree_add_item(tree, hf_btl2cap_dcid, tvb, offset, 2, TRUE);
|
|
offset+=2;
|
|
|
|
scid = tvb_get_letohs(tvb, offset);
|
|
proto_tree_add_item(tree, hf_btl2cap_scid, tvb, offset, 2, TRUE);
|
|
offset+=2;
|
|
|
|
proto_tree_add_item(tree, hf_btl2cap_result, tvb, offset, 2, TRUE);
|
|
offset+=2;
|
|
|
|
proto_tree_add_item(tree, hf_btl2cap_status, tvb, offset, 2, TRUE);
|
|
offset+=2;
|
|
|
|
if (pinfo->fd->flags.visited == 0) {
|
|
if((psm_data=se_tree_lookup32(cid_to_psm_table, scid|((pinfo->p2p_dir==P2P_DIR_RECV)?0x0000:0x8000)))){
|
|
se_tree_insert32(cid_to_psm_table, dcid|((pinfo->p2p_dir == P2P_DIR_RECV)?0x8000:0x0000), psm_data);
|
|
}
|
|
}
|
|
|
|
return offset;
|
|
}
|
|
|
|
static int
|
|
dissect_chanresponse(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree)
|
|
{
|
|
return dissect_connresponse(tvb, offset, pinfo, tree);
|
|
}
|
|
|
|
static int
|
|
dissect_movechanresponse(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree)
|
|
{
|
|
proto_tree_add_item(tree, hf_btl2cap_icid, tvb, offset, 2, TRUE);
|
|
offset+=2;
|
|
|
|
proto_tree_add_item(tree, hf_btl2cap_move_result, tvb, offset, 2, TRUE);
|
|
offset+=2;
|
|
|
|
return offset;
|
|
}
|
|
|
|
static int
|
|
dissect_movechanconfirmation(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree)
|
|
{
|
|
proto_tree_add_item(tree, hf_btl2cap_icid, tvb, offset, 2, TRUE);
|
|
offset+=2;
|
|
|
|
proto_tree_add_item(tree, hf_btl2cap_move_confirmation_result, tvb, offset, 2, TRUE);
|
|
offset+=2;
|
|
|
|
return offset;
|
|
}
|
|
|
|
static int
|
|
dissect_movechanconfirmationresponse(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree)
|
|
{
|
|
proto_tree_add_item(tree, hf_btl2cap_icid, tvb, offset, 2, TRUE);
|
|
offset+=2;
|
|
|
|
return offset;
|
|
}
|
|
|
|
static int
|
|
dissect_disconnrequestresponse(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree)
|
|
{
|
|
proto_tree_add_item(tree, hf_btl2cap_dcid, tvb, offset, 2, TRUE);
|
|
offset+=2;
|
|
|
|
proto_tree_add_item(tree, hf_btl2cap_scid, tvb, offset, 2, TRUE);
|
|
offset+=2;
|
|
|
|
return offset;
|
|
}
|
|
|
|
static void dissect_b_frame(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, proto_tree *btl2cap_tree, guint16 psm, guint16 length, int offset)
|
|
{
|
|
tvbuff_t *next_tvb;
|
|
next_tvb = tvb_new_subset(tvb, offset, tvb_length_remaining(tvb, offset), length);
|
|
|
|
if(check_col(pinfo->cinfo, COL_INFO)){
|
|
col_append_str(pinfo->cinfo, COL_INFO, "Connection oriented channel");
|
|
}
|
|
|
|
if(psm){
|
|
proto_item *psm_item;
|
|
|
|
psm_item=proto_tree_add_uint(btl2cap_tree, hf_btl2cap_psm, tvb, offset, 0, psm);
|
|
PROTO_ITEM_SET_GENERATED(psm_item);
|
|
|
|
/* call next dissector */
|
|
if (!dissector_try_port(l2cap_psm_dissector_table, (guint32) psm,
|
|
next_tvb, pinfo, tree)) {
|
|
/* unknown protocol. declare as data */
|
|
proto_tree_add_item(btl2cap_tree, hf_btl2cap_payload, tvb, offset, length, TRUE);
|
|
}
|
|
offset+=tvb_length_remaining(tvb, offset);
|
|
} else {
|
|
proto_tree_add_item(btl2cap_tree, hf_btl2cap_payload, tvb, offset, length, TRUE);
|
|
offset+=tvb_length_remaining(tvb, offset);
|
|
}
|
|
}
|
|
|
|
typedef struct _sdu_reassembly_t
|
|
{
|
|
guint8* reassembled;
|
|
guint8 seq;
|
|
guint32 first_frame;
|
|
guint32 last_frame;
|
|
guint16 tot_len;
|
|
int cur_off; /* counter used by reassembly */
|
|
} sdu_reassembly_t;
|
|
|
|
static void dissect_i_frame(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, proto_tree *btl2cap_tree, psm_data_t *psm_data, guint16 length, int offset, config_data_t *config_data)
|
|
{
|
|
tvbuff_t *next_tvb = NULL;
|
|
guint16 control, segment;
|
|
guint16 sdulen;
|
|
proto_item* ti_control;
|
|
proto_tree* ti_control_subtree;
|
|
sdu_reassembly_t* mfp = NULL;
|
|
guint16 psm = (psm_data?psm_data->psm:0);
|
|
|
|
control = tvb_get_letohs(tvb, offset);
|
|
segment = (control & 0xC000) >> 14;
|
|
if(check_col(pinfo->cinfo, COL_INFO)){
|
|
switch(segment)
|
|
{
|
|
case 0:
|
|
col_append_str(pinfo->cinfo, COL_INFO, "[I] Unsegmented SDU");
|
|
break;
|
|
case 1:
|
|
col_append_str(pinfo->cinfo, COL_INFO, "[I] Start SDU");
|
|
break;
|
|
case 2:
|
|
col_append_str(pinfo->cinfo, COL_INFO, "[I] End SDU");
|
|
break;
|
|
case 3:
|
|
col_append_str(pinfo->cinfo, COL_INFO, "[I] Continuation SDU");
|
|
break;
|
|
}
|
|
}
|
|
ti_control = proto_tree_add_none_format(btl2cap_tree, hf_btl2cap_control, tvb,
|
|
offset, 2, "Control: %s reqseq:%d r:%d txseq:%d",
|
|
val_to_str((control & 0xC000) >> 14, control_sar_vals, "unknown"),
|
|
(control & 0x3F00) >> 8,
|
|
(control & 0x0080) >> 7,
|
|
(control & 0x007E) >> 1);
|
|
ti_control_subtree = proto_item_add_subtree(ti_control, ett_btl2cap_control);
|
|
proto_tree_add_item(ti_control_subtree, hf_btl2cap_control_sar, tvb, offset, 2, TRUE);
|
|
proto_tree_add_item(ti_control_subtree, hf_btl2cap_control_reqseq, tvb, offset, 2, TRUE);
|
|
proto_tree_add_item(ti_control_subtree, hf_btl2cap_control_retransmissiondisable, tvb, offset, 2, TRUE);
|
|
proto_tree_add_item(ti_control_subtree, hf_btl2cap_control_txseq, tvb, offset, 2, TRUE);
|
|
proto_tree_add_item(ti_control_subtree, hf_btl2cap_control_type, tvb, offset, 2, TRUE);
|
|
offset += 2;
|
|
|
|
/*Segmented frames with SAR = start have an extra SDU length header field*/
|
|
if(segment == 0x01) {
|
|
proto_item *pi;;
|
|
sdulen = tvb_get_letohs(tvb, offset);
|
|
pi = proto_tree_add_item(btl2cap_tree, hf_btl2cap_sdulength, tvb, offset, 2, TRUE);
|
|
offset += 2;
|
|
length -= 6; /*Control, SDUlength, FCS*/
|
|
|
|
/* Detect malformed data */
|
|
if (sdulen < length) {
|
|
sdulen = length;
|
|
expert_add_info_format(pinfo, pi, PI_MALFORMED, PI_WARN,
|
|
"SDU length less than length of first packet");
|
|
}
|
|
|
|
if(!pinfo->fd->flags.visited){
|
|
mfp=se_alloc(sizeof(sdu_reassembly_t));
|
|
mfp->first_frame=pinfo->fd->num;
|
|
mfp->last_frame=0;
|
|
mfp->tot_len=sdulen;
|
|
mfp->reassembled=se_alloc(sdulen);
|
|
tvb_memcpy(tvb, mfp->reassembled, offset, length);
|
|
mfp->cur_off=length;
|
|
se_tree_insert32(config_data->start_fragments, pinfo->fd->num, mfp);
|
|
} else {
|
|
mfp=se_tree_lookup32(config_data->start_fragments, pinfo->fd->num);
|
|
}
|
|
if(mfp && mfp->last_frame){
|
|
proto_item *item;
|
|
item=proto_tree_add_uint(btl2cap_tree, hf_btl2cap_reassembled_in, tvb, 0, 0, mfp->last_frame);
|
|
PROTO_ITEM_SET_GENERATED(item);
|
|
if (check_col(pinfo->cinfo, COL_INFO)){
|
|
col_append_fstr(pinfo->cinfo, COL_INFO, "[Reassembled in #%u] ", mfp->last_frame);
|
|
}
|
|
}
|
|
} else {
|
|
length -= 4; /*Control, FCS*/
|
|
}
|
|
if(segment == 0x02 || segment == 0x03) {
|
|
mfp=se_tree_lookup32_le(config_data->start_fragments, pinfo->fd->num);
|
|
if(!pinfo->fd->flags.visited){
|
|
if(mfp && !mfp->last_frame && (mfp->tot_len>=mfp->cur_off+length)){
|
|
tvb_memcpy(tvb, mfp->reassembled+mfp->cur_off, offset, length);
|
|
mfp->cur_off+=length;
|
|
if(segment == 0x02){
|
|
mfp->last_frame=pinfo->fd->num;
|
|
}
|
|
}
|
|
}
|
|
if(mfp){
|
|
proto_item *item;
|
|
item=proto_tree_add_uint(btl2cap_tree, hf_btl2cap_continuation_to, tvb, 0, 0, mfp->first_frame);
|
|
PROTO_ITEM_SET_GENERATED(item);
|
|
if (check_col(pinfo->cinfo, COL_INFO)){
|
|
col_append_fstr(pinfo->cinfo, COL_INFO, "[Continuation to #%u] ", mfp->first_frame);
|
|
}
|
|
}
|
|
}
|
|
if(segment == 0x02 && mfp && mfp->last_frame==pinfo->fd->num){
|
|
next_tvb = tvb_new_child_real_data(tvb, (guint8*)mfp->reassembled, mfp->tot_len, mfp->tot_len);
|
|
packet_add_new_data_source(pinfo, btl2cap_tree, next_tvb, "Reassembled L2CAP");
|
|
}
|
|
/*pass up to higher layer if we have a complete packet*/
|
|
if(segment == 0x00) {
|
|
next_tvb = tvb_new_subset(tvb, offset, tvb_length_remaining(tvb, offset) - 2, length);
|
|
}
|
|
if(next_tvb) {
|
|
if(psm){
|
|
proto_item *psm_item;
|
|
|
|
psm_item=proto_tree_add_uint(btl2cap_tree, hf_btl2cap_psm, tvb, offset, 0, psm);
|
|
PROTO_ITEM_SET_GENERATED(psm_item);
|
|
|
|
/* call next dissector */
|
|
if (!dissector_try_port(l2cap_psm_dissector_table, (guint32) psm,
|
|
next_tvb, pinfo, tree)) {
|
|
/* unknown protocol. declare as data */
|
|
proto_tree_add_item(btl2cap_tree, hf_btl2cap_payload, next_tvb, 0, tvb_length(next_tvb), TRUE);
|
|
}
|
|
} else {
|
|
proto_tree_add_item(btl2cap_tree, hf_btl2cap_payload, next_tvb, 0, tvb_length(next_tvb), TRUE);
|
|
}
|
|
}
|
|
offset+=(tvb_length_remaining(tvb, offset) - 2);
|
|
proto_tree_add_item(btl2cap_tree, hf_btl2cap_fcs, tvb, offset, 2, TRUE);
|
|
offset += 2;
|
|
}
|
|
|
|
static void dissect_s_frame(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree _U_, proto_tree *btl2cap_tree, guint16 psm _U_, guint16 length _U_, int offset, config_data_t *config_data _U_)
|
|
{
|
|
proto_item* ti_control;
|
|
proto_tree* ti_control_subtree;
|
|
guint16 control;
|
|
|
|
control = tvb_get_letohs(tvb, offset);
|
|
if(check_col(pinfo->cinfo, COL_INFO)){
|
|
switch((control & 0x000C) >> 2)
|
|
{
|
|
case 0:
|
|
col_append_str(pinfo->cinfo, COL_INFO, "[S] Receiver Ready");
|
|
break;
|
|
case 1:
|
|
col_append_str(pinfo->cinfo, COL_INFO, "[S] Reject");
|
|
break;
|
|
default:
|
|
col_append_str(pinfo->cinfo, COL_INFO, "[S] Unknown supervisory frame");
|
|
break;
|
|
}
|
|
}
|
|
ti_control = proto_tree_add_none_format(btl2cap_tree, hf_btl2cap_control, tvb,
|
|
offset, 2, "Control: %s reqseq:%d r:%d",
|
|
val_to_str((control & 0x000C) >> 2, control_supervisory_vals, "unknown"),
|
|
(control & 0x3F00) >> 8,
|
|
(control & 0x0080) >> 7);
|
|
ti_control_subtree = proto_item_add_subtree(ti_control, ett_btl2cap_control);
|
|
proto_tree_add_item(ti_control_subtree, hf_btl2cap_control_reqseq, tvb, offset, 2, TRUE);
|
|
proto_tree_add_item(ti_control_subtree, hf_btl2cap_control_retransmissiondisable, tvb, offset, 2, TRUE);
|
|
proto_tree_add_item(ti_control_subtree, hf_btl2cap_control_supervisory, tvb, offset, 2, TRUE);
|
|
proto_tree_add_item(ti_control_subtree, hf_btl2cap_control_type, tvb, offset, 2, TRUE);
|
|
offset += 2;
|
|
proto_tree_add_item(ti_control_subtree, hf_btl2cap_fcs, tvb, offset, 2, TRUE);
|
|
offset += 2;
|
|
}
|
|
|
|
/* Code to actually dissect the packets
|
|
* This dissector will only be called ontop of BTHCI ACL
|
|
* and this dissector _REQUIRES_ that
|
|
* pinfo->private_data points to a valid bthci_acl_data_t structure
|
|
*/
|
|
static void dissect_btl2cap(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
|
|
{
|
|
int offset=0;
|
|
proto_item *ti=NULL;
|
|
proto_tree *btl2cap_tree=NULL;
|
|
guint16 length, cid;
|
|
guint16 psm;
|
|
guint16 control;
|
|
tvbuff_t *next_tvb = NULL;
|
|
psm_data_t *psm_data;
|
|
bthci_acl_data_t *acl_data;
|
|
btl2cap_data_t *l2cap_data;
|
|
config_data_t *config_data;
|
|
void* pd_save;
|
|
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL, "L2CAP");
|
|
if(check_col(pinfo->cinfo, COL_INFO)){
|
|
col_clear(pinfo->cinfo, COL_INFO);
|
|
col_set_str(pinfo->cinfo, COL_INFO, pinfo->p2p_dir == P2P_DIR_SENT ? "Sent " : "Rcvd ");
|
|
}
|
|
|
|
if(tree){
|
|
ti=proto_tree_add_item(tree, proto_btl2cap, tvb, offset, -1, FALSE);
|
|
btl2cap_tree=proto_item_add_subtree(ti, ett_btl2cap);
|
|
}
|
|
|
|
length = tvb_get_letohs(tvb, offset);
|
|
proto_tree_add_item(btl2cap_tree, hf_btl2cap_length, tvb, offset, 2, TRUE);
|
|
offset+=2;
|
|
|
|
cid = tvb_get_letohs(tvb, offset);
|
|
proto_tree_add_item(btl2cap_tree, hf_btl2cap_cid, tvb, offset, 2, TRUE);
|
|
offset+=2;
|
|
|
|
acl_data=(bthci_acl_data_t *)pinfo->private_data;
|
|
l2cap_data=ep_alloc(sizeof(btl2cap_data_t));
|
|
l2cap_data->chandle=acl_data->chandle;
|
|
l2cap_data->cid=cid;
|
|
pd_save = pinfo->private_data;
|
|
pinfo->private_data=l2cap_data;
|
|
|
|
if(cid==BTL2CAP_FIXED_CID_SIGNAL){ /* This is a command packet*/
|
|
while(offset<(length+4)) {
|
|
proto_tree *btl2cap_cmd_tree=NULL;
|
|
proto_item *ti_command=NULL;
|
|
guint8 cmd_code;
|
|
guint16 cmd_length;
|
|
|
|
ti_command=proto_tree_add_none_format(btl2cap_tree,
|
|
hf_btl2cap_command, tvb,
|
|
offset, length,
|
|
"Command: ");
|
|
btl2cap_cmd_tree=proto_item_add_subtree(ti_command, ett_btl2cap_cmd);
|
|
|
|
cmd_code=tvb_get_guint8(tvb, offset);
|
|
proto_tree_add_item(btl2cap_cmd_tree, hf_btl2cap_cmd_code, tvb, offset, 1, TRUE);
|
|
offset++;
|
|
|
|
proto_tree_add_item(btl2cap_cmd_tree, hf_btl2cap_cmd_ident, tvb, offset, 1, TRUE);
|
|
offset++;
|
|
|
|
cmd_length=tvb_get_letohs(tvb, offset);
|
|
proto_tree_add_item(btl2cap_cmd_tree, hf_btl2cap_cmd_length, tvb, offset, 2, TRUE);
|
|
proto_item_set_len(ti_command, cmd_length+4);
|
|
offset+=2;
|
|
|
|
switch(cmd_code) {
|
|
case 0x01: /* Command Reject */
|
|
offset=dissect_comrej(tvb, offset, pinfo, btl2cap_cmd_tree);
|
|
proto_item_append_text(ti_command, "Command Reject");
|
|
if ((check_col(pinfo->cinfo, COL_INFO))){
|
|
col_append_str(pinfo->cinfo, COL_INFO, "Command Reject");
|
|
}
|
|
break;
|
|
|
|
case 0x02: /* Connection Request */
|
|
offset=dissect_connrequest(tvb, offset, pinfo, btl2cap_cmd_tree);
|
|
proto_item_append_text(ti_command, "Connection Request");
|
|
if ((check_col(pinfo->cinfo, COL_INFO))){
|
|
col_append_str(pinfo->cinfo, COL_INFO, "Connection Request");
|
|
}
|
|
break;
|
|
|
|
case 0x03: /* Connection Response */
|
|
offset=dissect_connresponse(tvb, offset, pinfo, btl2cap_cmd_tree);
|
|
proto_item_append_text(ti_command, "Connection Response");
|
|
if ((check_col(pinfo->cinfo, COL_INFO))){
|
|
col_append_str(pinfo->cinfo, COL_INFO, "Connection Response");
|
|
}
|
|
break;
|
|
case 0x04: /* Configure Request */
|
|
offset=dissect_configrequest(tvb, offset, pinfo, btl2cap_cmd_tree, cmd_length);
|
|
proto_item_append_text(ti_command, "Configure Request");
|
|
if ((check_col(pinfo->cinfo, COL_INFO))){
|
|
col_append_str(pinfo->cinfo, COL_INFO, "Configure Request");
|
|
}
|
|
break;
|
|
|
|
case 0x05: /* Configure Response */
|
|
offset=dissect_configresponse(tvb, offset, pinfo, btl2cap_cmd_tree, cmd_length);
|
|
proto_item_append_text(ti_command, "Configure Response");
|
|
if ((check_col(pinfo->cinfo, COL_INFO))){
|
|
col_append_str(pinfo->cinfo, COL_INFO, "Configure Response");
|
|
}
|
|
break;
|
|
|
|
case 0x06: /* Disconnect Request */
|
|
offset=dissect_disconnrequestresponse(tvb, offset, pinfo, btl2cap_cmd_tree);
|
|
proto_item_append_text(ti_command, "Disconnect Request");
|
|
if ((check_col(pinfo->cinfo, COL_INFO))){
|
|
col_append_str(pinfo->cinfo, COL_INFO, "Disconnect Request");
|
|
}
|
|
break;
|
|
|
|
case 0x07: /* Disconnect Response */
|
|
offset=dissect_disconnrequestresponse(tvb, offset, pinfo, btl2cap_cmd_tree);
|
|
proto_item_append_text(ti_command, "Disconnect Response");
|
|
if ((check_col(pinfo->cinfo, COL_INFO))){
|
|
col_append_str(pinfo->cinfo, COL_INFO, "Disconnect Response");
|
|
}
|
|
break;
|
|
|
|
case 0x08: /* Echo Request */
|
|
proto_item_append_text(ti_command, "Echo Request");
|
|
offset+=tvb_length_remaining(tvb, offset);
|
|
if ((check_col(pinfo->cinfo, COL_INFO))){
|
|
col_append_str(pinfo->cinfo, COL_INFO, "Echo Request");
|
|
}
|
|
break;
|
|
|
|
case 0x09: /* Echo Response */
|
|
proto_item_append_text(ti_command, "Echo Response");
|
|
offset+=tvb_length_remaining(tvb, offset);
|
|
if ((check_col(pinfo->cinfo, COL_INFO))){
|
|
col_append_str(pinfo->cinfo, COL_INFO, "Echo Response");
|
|
}
|
|
break;
|
|
|
|
case 0x0a: /* Information Request */
|
|
offset=dissect_inforequest(tvb, offset, pinfo, btl2cap_cmd_tree);
|
|
|
|
proto_item_append_text(ti_command, "Information Request");
|
|
if ((check_col(pinfo->cinfo, COL_INFO))){
|
|
col_append_str(pinfo->cinfo, COL_INFO, "Information Request");
|
|
}
|
|
break;
|
|
|
|
case 0x0b: /* Information Response */
|
|
offset=dissect_inforesponse(tvb, offset, pinfo, btl2cap_cmd_tree);
|
|
proto_item_append_text(ti_command, "Information Response");
|
|
if ((check_col(pinfo->cinfo, COL_INFO))){
|
|
col_append_str(pinfo->cinfo, COL_INFO, "Information Response");
|
|
}
|
|
break;
|
|
|
|
case 0x0c: /* Create Channel Request */
|
|
offset=dissect_chanrequest(tvb, offset, pinfo, btl2cap_cmd_tree);
|
|
proto_item_append_text(ti_command, "Create Channel Request");
|
|
if ((check_col(pinfo->cinfo, COL_INFO))){
|
|
col_append_str(pinfo->cinfo, COL_INFO, "Create Channel Request");
|
|
}
|
|
break;
|
|
|
|
case 0x0d: /* Create Channel Response */
|
|
offset=dissect_chanresponse(tvb, offset, pinfo, btl2cap_cmd_tree);
|
|
proto_item_append_text(ti_command, "Create Channel Response");
|
|
if ((check_col(pinfo->cinfo, COL_INFO))){
|
|
col_append_str(pinfo->cinfo, COL_INFO, "Create Channel Response");
|
|
}
|
|
break;
|
|
|
|
case 0x0e: /* Move Channel Request */
|
|
offset=dissect_movechanrequest(tvb, offset, pinfo, btl2cap_cmd_tree);
|
|
proto_item_append_text(ti_command, "Move Channel Request");
|
|
if ((check_col(pinfo->cinfo, COL_INFO))){
|
|
col_append_str(pinfo->cinfo, COL_INFO, "Move Channel Request");
|
|
}
|
|
break;
|
|
|
|
case 0x0f: /* Move Channel Response */
|
|
offset=dissect_movechanresponse(tvb, offset, pinfo, btl2cap_cmd_tree);
|
|
proto_item_append_text(ti_command, "Move Channel Response");
|
|
if ((check_col(pinfo->cinfo, COL_INFO))){
|
|
col_append_str(pinfo->cinfo, COL_INFO, "Move Channel Response");
|
|
}
|
|
break;
|
|
|
|
case 0x10: /* Move Channel Confirmation */
|
|
offset=dissect_movechanconfirmation(tvb, offset, pinfo, btl2cap_cmd_tree);
|
|
proto_item_append_text(ti_command, "Move Channel Confirmation");
|
|
if ((check_col(pinfo->cinfo, COL_INFO))){
|
|
col_append_str(pinfo->cinfo, COL_INFO, "Move Channel Confirmation");
|
|
}
|
|
break;
|
|
|
|
case 0x11: /* Move Channel Confirmation Response */
|
|
offset=dissect_movechanconfirmationresponse(tvb, offset, pinfo, btl2cap_cmd_tree);
|
|
proto_item_append_text(ti_command, "Move Channel Confirmation Response");
|
|
if ((check_col(pinfo->cinfo, COL_INFO))){
|
|
col_append_str(pinfo->cinfo, COL_INFO, "Move Channel Confirmation Response");
|
|
}
|
|
break;
|
|
|
|
default:
|
|
proto_tree_add_item(btl2cap_cmd_tree, hf_btl2cap_cmd_data, tvb, offset, -1, TRUE);
|
|
offset+=tvb_length_remaining(tvb, offset);
|
|
break;
|
|
}
|
|
}
|
|
} else if (cid == BTL2CAP_FIXED_CID_CONNLESS) { /* Connectionless reception channel */
|
|
if(check_col(pinfo->cinfo, COL_INFO)){
|
|
col_append_str(pinfo->cinfo, COL_INFO, "Connectionless reception channel");
|
|
}
|
|
|
|
psm = tvb_get_letohs(tvb, offset);
|
|
proto_tree_add_item(btl2cap_tree, hf_btl2cap_psm, tvb, offset, 2, TRUE);
|
|
offset+=2;
|
|
|
|
|
|
next_tvb = tvb_new_subset(tvb, offset, tvb_length_remaining(tvb, offset), length);
|
|
|
|
/* call next dissector */
|
|
if(!dissector_try_port(l2cap_psm_dissector_table, (guint32) psm,
|
|
next_tvb, pinfo, tree)){
|
|
/* unknown protocol. declare as data */
|
|
proto_tree_add_item(btl2cap_tree, hf_btl2cap_payload, tvb, offset, length, TRUE);
|
|
}
|
|
offset+=tvb_length_remaining(tvb, offset);
|
|
}
|
|
else if(cid < BTL2CAP_FIXED_CID_MAX) {
|
|
if (cid == BTL2CAP_FIXED_CID_AMP_MAN) {
|
|
guint16 control;
|
|
|
|
control = tvb_get_letohs(tvb, offset);
|
|
if(control & 0x1) {
|
|
dissect_s_frame(tvb, pinfo, tree, btl2cap_tree, 0 /* unused */, length, offset, NULL /* unused */);
|
|
} else {
|
|
proto_item* ti_control;
|
|
proto_tree* ti_control_subtree;
|
|
|
|
ti_control = proto_tree_add_none_format(btl2cap_tree, hf_btl2cap_control, tvb,
|
|
offset, 2, "Control: %s reqseq:%d r:%d txseq:%d",
|
|
val_to_str((control & 0xC000) >> 14, control_sar_vals, "unknown"),
|
|
(control & 0x3F00) >> 8,
|
|
(control & 0x0080) >> 7,
|
|
(control & 0x007E) >> 1);
|
|
ti_control_subtree = proto_item_add_subtree(ti_control, ett_btl2cap_control);
|
|
proto_tree_add_item(ti_control_subtree, hf_btl2cap_control_sar, tvb, offset, 2, TRUE);
|
|
proto_tree_add_item(ti_control_subtree, hf_btl2cap_control_reqseq, tvb, offset, 2, TRUE);
|
|
proto_tree_add_item(ti_control_subtree, hf_btl2cap_control_retransmissiondisable, tvb, offset, 2, TRUE);
|
|
proto_tree_add_item(ti_control_subtree, hf_btl2cap_control_txseq, tvb, offset, 2, TRUE);
|
|
proto_tree_add_item(ti_control_subtree, hf_btl2cap_control_type, tvb, offset, 2, TRUE);
|
|
offset += 2;
|
|
proto_tree_add_item(btl2cap_tree, hf_btl2cap_fcs, tvb, tvb_length(tvb)-2, 2, TRUE);
|
|
|
|
next_tvb = tvb_new_subset(tvb, offset, tvb_length_remaining(tvb, offset)-2, length);
|
|
}
|
|
}
|
|
else {
|
|
next_tvb = tvb_new_subset(tvb, offset, tvb_length_remaining(tvb, offset), length);
|
|
}
|
|
/* call next dissector */
|
|
if(next_tvb && !dissector_try_port(l2cap_cid_dissector_table, (guint32) cid,
|
|
next_tvb, pinfo, tree)){
|
|
/* unknown protocol. declare as data */
|
|
proto_tree_add_item(btl2cap_tree, hf_btl2cap_payload, tvb, offset, length, TRUE);
|
|
}
|
|
}
|
|
else /* if(cid >= BTL2CAP_FIXED_CID_MAX) */ { /* Connection oriented channel */
|
|
if((psm_data=se_tree_lookup32(cid_to_psm_table, cid|((pinfo->p2p_dir==P2P_DIR_RECV)?0x0000:0x8000)))){
|
|
psm=psm_data->psm;
|
|
if(pinfo->p2p_dir==P2P_DIR_RECV)
|
|
config_data = &(psm_data->in);
|
|
else
|
|
config_data = &(psm_data->out);
|
|
if(config_data->mode == 0) {
|
|
dissect_b_frame(tvb, pinfo, tree, btl2cap_tree, psm, length, offset);
|
|
} else {
|
|
control = tvb_get_letohs(tvb, offset);
|
|
if(control & 0x1) {
|
|
dissect_s_frame(tvb, pinfo, tree, btl2cap_tree, psm, length, offset, config_data);
|
|
} else {
|
|
dissect_i_frame(tvb, pinfo, tree, btl2cap_tree, psm_data, length, offset, config_data);
|
|
}
|
|
}
|
|
} else {
|
|
psm=0;
|
|
dissect_b_frame(tvb, pinfo, tree, btl2cap_tree, psm, length, offset);
|
|
}
|
|
}
|
|
pinfo->private_data = pd_save;
|
|
}
|
|
|
|
|
|
/* Register the protocol with Wireshark */
|
|
void
|
|
proto_register_btl2cap(void)
|
|
{
|
|
|
|
/* Setup list of header fields See Section 1.6.1 for details*/
|
|
static hf_register_info hf[] = {
|
|
{ &hf_btl2cap_length,
|
|
{ "Length", "btl2cap.length",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
"L2CAP Payload Length", HFILL }
|
|
},
|
|
{ &hf_btl2cap_cid,
|
|
{ "CID", "btl2cap.cid",
|
|
FT_UINT16, BASE_HEX, NULL, 0x0,
|
|
"L2CAP Channel Identifier", HFILL }
|
|
},
|
|
{ &hf_btl2cap_payload,
|
|
{ "Payload", "btl2cap.payload",
|
|
FT_BYTES, BASE_NONE, NULL, 0x0,
|
|
"L2CAP Payload", HFILL }
|
|
},
|
|
{ &hf_btl2cap_command,
|
|
{ "Command", "btl2cap.command",
|
|
FT_NONE, BASE_NONE, NULL, 0x0,
|
|
"L2CAP Command", HFILL }
|
|
},
|
|
{ &hf_btl2cap_cmd_code,
|
|
{ "Command Code", "btl2cap.cmd_code",
|
|
FT_UINT8, BASE_HEX, VALS(command_code_vals), 0x0,
|
|
"L2CAP Command Code", HFILL }
|
|
},
|
|
{ &hf_btl2cap_cmd_ident,
|
|
{ "Command Identifier", "btl2cap.cmd_ident",
|
|
FT_UINT8, BASE_HEX, NULL, 0x0,
|
|
"L2CAP Command Identifier", HFILL }
|
|
},
|
|
{ &hf_btl2cap_cmd_length,
|
|
{ "Command Length", "btl2cap.cmd_length",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
"L2CAP Command Length", HFILL }
|
|
},
|
|
{ &hf_btl2cap_cmd_data,
|
|
{ "Command Data", "btl2cap.cmd_data",
|
|
FT_NONE, BASE_NONE, NULL, 0x0,
|
|
"L2CAP Command Data", HFILL }
|
|
},
|
|
{ &hf_btl2cap_psm,
|
|
{ "PSM", "btl2cap.psm",
|
|
FT_UINT16, BASE_HEX, VALS(psm_vals), 0x0,
|
|
"Protocol/Service Multiplexer", HFILL }
|
|
},
|
|
{ &hf_btl2cap_scid,
|
|
{ "Source CID", "btl2cap.scid",
|
|
FT_UINT16, BASE_HEX, NULL, 0x0,
|
|
"Source Channel Identifier", HFILL }
|
|
},
|
|
{ &hf_btl2cap_dcid,
|
|
{ "Destination CID", "btl2cap.dcid",
|
|
FT_UINT16, BASE_HEX, NULL, 0x0,
|
|
"Destination Channel Identifier", HFILL }
|
|
},
|
|
{ &hf_btl2cap_icid,
|
|
{ "Initiator CID", "btl2cap.icid",
|
|
FT_UINT16, BASE_HEX, NULL, 0x0,
|
|
"Initiator Channel Identifier", HFILL }
|
|
},
|
|
{ &hf_btl2cap_controller,
|
|
{ "Controller ID", "btl2cap.ctrl_id",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_btl2cap_dcontroller,
|
|
{ "Controller ID", "btl2cap.dctrl_id",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
"Destination Controller ID", HFILL }
|
|
},
|
|
{ &hf_btl2cap_result,
|
|
{ "Result", "btl2cap.result",
|
|
FT_UINT16, BASE_HEX, VALS(result_vals), 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_btl2cap_move_result,
|
|
{ "Move Result", "btl2cap.move_result",
|
|
FT_UINT16, BASE_HEX, VALS(move_result_vals), 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_btl2cap_move_confirmation_result,
|
|
{ "Move Result", "btl2cap.move_result",
|
|
FT_UINT16, BASE_HEX, VALS(move_result_confirmation_vals), 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_btl2cap_status,
|
|
{ "Status", "btl2cap.status",
|
|
FT_UINT16, BASE_HEX, VALS(status_vals), 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_btl2cap_rej_reason,
|
|
{ "Reason", "btl2cap.rej_reason",
|
|
FT_UINT16, BASE_HEX, VALS(reason_vals), 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_btl2cap_sig_mtu,
|
|
{ "Maximum Signalling MTU", "btl2cap.sig_mtu",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_btl2cap_info_mtu,
|
|
{ "Remote Entity MTU", "btl2cap.info_mtu",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
"Remote entity acceptable connectionless MTU", HFILL }
|
|
},
|
|
{ &hf_btl2cap_info_flowcontrol,
|
|
{ "Flow Control Mode", "btl2cap.info_flowcontrol",
|
|
FT_UINT8, BASE_DEC, NULL, 0x01,
|
|
"Flow Control mode support", HFILL }
|
|
},
|
|
{ &hf_btl2cap_info_retransmission,
|
|
{ "Retransmission Mode", "btl2cap.info_retransmission",
|
|
FT_UINT8, BASE_DEC, NULL, 0x02,
|
|
"Retransmission mode support", HFILL }
|
|
},
|
|
{ &hf_btl2cap_info_bidirqos,
|
|
{ "Bi-Directional QOS", "btl2cap.info_bidirqos",
|
|
FT_UINT8, BASE_DEC, NULL, 0x04,
|
|
"Bi-Directional QOS support", HFILL }
|
|
},
|
|
{ &hf_btl2cap_info_enh_retransmission,
|
|
{ "Enhancded Retransmission Mode", "btl2cap.info_enh_retransmission",
|
|
FT_UINT8, BASE_DEC, NULL, 0x08,
|
|
"Enhancded Retransmission mode support", HFILL }
|
|
},
|
|
{ &hf_btl2cap_info_streaming,
|
|
{ "Streaming Mode", "btl2cap.info_streaming",
|
|
FT_UINT8, BASE_DEC, NULL, 0x10,
|
|
"Streaming mode support", HFILL }
|
|
},
|
|
{ &hf_btl2cap_info_fcs,
|
|
{ "FCS", "btl2cap.info_fcs",
|
|
FT_UINT8, BASE_DEC, NULL, 0x20,
|
|
"FCS support", HFILL }
|
|
},
|
|
{ &hf_btl2cap_info_flow_spec,
|
|
{ "Extended Flow Specification for BR/EDR", "btl2cap.info_flow_spec",
|
|
FT_UINT8, BASE_DEC, NULL, 0x40,
|
|
"Extended Flow Specification for BR/EDR support", HFILL }
|
|
},
|
|
{ &hf_btl2cap_info_fixedchan,
|
|
{ "Fixed Channels", "btl2cap.info_fixedchan",
|
|
FT_UINT8, BASE_DEC, NULL, 0x80,
|
|
"Fixed Channels support", HFILL }
|
|
},
|
|
{ &hf_btl2cap_info_window,
|
|
{ "Extended Window Size", "btl2cap.info_window",
|
|
FT_UINT8, BASE_DEC, NULL, 0x01,
|
|
"Extended Window Size support", HFILL }
|
|
},
|
|
{ &hf_btl2cap_info_unicast,
|
|
{ "Unicast Connectionless Data Reception", "btl2cap.info_unicast",
|
|
FT_UINT8, BASE_DEC, NULL, 0x02,
|
|
"Unicast Connectionless Data Reception support", HFILL }
|
|
},
|
|
{ &hf_btl2cap_info_fixedchans,
|
|
{ "Fixed Channels", "btl2cap.info_fixedchans",
|
|
FT_NONE, BASE_NONE, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_btl2cap_info_fixedchans_null,
|
|
{ "Null identifier", "btl2cap.info_fixedchans_null",
|
|
FT_UINT32, BASE_DEC, NULL, 0x1,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_btl2cap_info_fixedchans_signal,
|
|
{ "L2CAP signaling channel", "btl2cap.info_fixedchans_signal",
|
|
FT_UINT32, BASE_DEC, NULL, 0x2,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_btl2cap_info_fixedchans_connless,
|
|
{ "Connectionless reception", "btl2cap.info_fixedchans_connless",
|
|
FT_UINT32, BASE_DEC, NULL, 0x4,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_btl2cap_info_fixedchans_amp_man,
|
|
{ "AMP Manager protocol", "btl2cap.info_fixedchans_amp_man",
|
|
FT_UINT32, BASE_DEC, NULL, 0x8,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_btl2cap_info_fixedchans_amp_test,
|
|
{ "AMP Test Manager", "btl2cap.info_fixedchans_amp_test",
|
|
FT_UINT32, BASE_DEC, NULL, 0x80000000,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_btl2cap_info_type,
|
|
{ "Information Type", "btl2cap.info_type",
|
|
FT_UINT16, BASE_HEX, VALS(info_type_vals), 0x0,
|
|
"Type of implementation-specific information", HFILL }
|
|
},
|
|
{ &hf_btl2cap_info_result,
|
|
{ "Result", "btl2cap.info_result",
|
|
FT_UINT16, BASE_HEX, VALS(info_result_vals), 0x0,
|
|
"Information about the success of the request", HFILL }
|
|
},
|
|
{ &hf_btl2cap_info_extfeatures,
|
|
{ "Extended Features", "btl2cap.info_extfeatures",
|
|
FT_NONE, BASE_NONE, NULL, 0x0,
|
|
"Extended Features Mask", HFILL }
|
|
},
|
|
{ &hf_btl2cap_continuation_flag,
|
|
{ "Continuation Flag", "btl2cap.continuation",
|
|
FT_BOOLEAN, 16, NULL, 0x0001,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_btl2cap_configuration_result,
|
|
{ "Result", "btl2cap.conf_result",
|
|
FT_UINT16, BASE_HEX, VALS(configuration_result_vals), 0x0,
|
|
"Configuration Result", HFILL }
|
|
},
|
|
{ &hf_btl2cap_option_type,
|
|
{ "Type", "btl2cap.option_type",
|
|
FT_UINT8, BASE_HEX, VALS(option_type_vals), 0x0,
|
|
"Type of option", HFILL }
|
|
},
|
|
{ &hf_btl2cap_option_length,
|
|
{ "Length", "btl2cap.option_length",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
"Number of octets in option payload", HFILL }
|
|
},
|
|
{ &hf_btl2cap_option_mtu,
|
|
{ "MTU", "btl2cap.option_mtu",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
"Maximum Transmission Unit", HFILL }
|
|
},
|
|
{ &hf_btl2cap_option_flushTO,
|
|
{ "Flush Timeout (ms)", "btl2cap.option_flushto",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
"Flush Timeout in milliseconds", HFILL }
|
|
},
|
|
{ &hf_btl2cap_option_flush_to_us,
|
|
{ "Flush Timeout (us)", "btl2cap.option_flushto",
|
|
FT_UINT32, BASE_DEC, NULL, 0x0,
|
|
"Flush Timeout (microseconds)", HFILL }
|
|
},
|
|
{ &hf_btl2cap_option_sdu_size,
|
|
{ "Maximum SDU Size", "btl2cap.option_sdu_size",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_btl2cap_option_sdu_arrival_time,
|
|
{ "SDU Inter-arrival Time (us)", "btl2cap.option_sdu_arrival_time",
|
|
FT_UINT32, BASE_DEC, NULL, 0x0,
|
|
"SDU Inter-arrival Time (microseconds)", HFILL }
|
|
},
|
|
{ &hf_btl2cap_option_identifier,
|
|
{ "Identifier", "btl2cap.option_ident",
|
|
FT_UINT8, BASE_HEX, NULL, 0x0,
|
|
"Flow Specification Identifier", HFILL }
|
|
},
|
|
{ &hf_btl2cap_option_access_latency,
|
|
{ "Access Latency (us)", "btl2cap.option_access_latency",
|
|
FT_UINT32, BASE_DEC, NULL, 0x0,
|
|
"Access Latency (microseconds)", HFILL }
|
|
},
|
|
{ &hf_btl2cap_option_flags,
|
|
{ "Flags", "btl2cap.option_flags",
|
|
FT_UINT8, BASE_HEX, NULL, 0x0,
|
|
"Flags - must be set to 0 (Reserved for future use)", HFILL }
|
|
},
|
|
{ &hf_btl2cap_option_service_type,
|
|
{ "Service Type", "btl2cap.option_servicetype",
|
|
FT_UINT8, BASE_HEX, VALS(option_servicetype_vals), 0x0,
|
|
"Level of service required", HFILL }
|
|
},
|
|
{ &hf_btl2cap_option_tokenrate,
|
|
{ "Token Rate (bytes/s)", "btl2cap.option_tokenrate",
|
|
FT_UINT32, BASE_DEC, NULL, 0x0,
|
|
"Rate at which traffic credits are granted (bytes/s)", HFILL }
|
|
},
|
|
{ &hf_btl2cap_option_tokenbucketsize,
|
|
{ "Token Bucket Size (bytes)", "btl2cap.option_tokenbsize",
|
|
FT_UINT32, BASE_DEC, NULL, 0x0,
|
|
"Size of the token bucket (bytes)", HFILL }
|
|
},
|
|
{ &hf_btl2cap_option_peakbandwidth,
|
|
{ "Peak Bandwidth (bytes/s)", "btl2cap.option_peakbandwidth",
|
|
FT_UINT32, BASE_DEC, NULL, 0x0,
|
|
"Limit how fast packets may be sent (bytes/s)", HFILL }
|
|
},
|
|
{ &hf_btl2cap_option_latency,
|
|
{ "Latency (microseconds)", "btl2cap.option_latency",
|
|
FT_UINT32, BASE_DEC, NULL, 0x0,
|
|
"Maximal acceptable delay (microseconds)", HFILL }
|
|
},
|
|
{ &hf_btl2cap_option_delayvariation,
|
|
{ "Delay Variation (microseconds)", "btl2cap.option_delayvar",
|
|
FT_UINT32, BASE_DEC, NULL, 0x0,
|
|
"Difference between maximum and minimum delay (microseconds)", HFILL }
|
|
},
|
|
{ &hf_btl2cap_option_retransmissionmode,
|
|
{ "Mode", "btl2cap.retransmissionmode",
|
|
FT_UINT8, BASE_HEX, VALS(option_retransmissionmode_vals), 0x0,
|
|
"Retransmission/Flow Control mode", HFILL }
|
|
},
|
|
{ &hf_btl2cap_option_txwindow,
|
|
{ "TxWindow", "btl2cap.txwindow",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
"Retransmission window size", HFILL }
|
|
},
|
|
{ &hf_btl2cap_option_maxtransmit,
|
|
{ "MaxTransmit", "btl2cap.maxtransmit",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
"Maximum I-frame retransmissions", HFILL }
|
|
},
|
|
{ &hf_btl2cap_option_retransmittimeout,
|
|
{ "Retransmit timeout (ms)", "btl2cap.retransmittimeout",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
"Retransmission timeout (milliseconds)", HFILL }
|
|
},
|
|
{ &hf_btl2cap_option_monitortimeout,
|
|
{ "Monitor Timeout (ms)", "btl2cap.monitortimeout",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
"S-frame transmission interval (milliseconds)", HFILL }
|
|
},
|
|
{ &hf_btl2cap_option_mps,
|
|
{ "MPS", "btl2cap.mps",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
"Maximum PDU Payload Size", HFILL }
|
|
},
|
|
{ &hf_btl2cap_option_fcs,
|
|
{ "FCS", "btl2cap.option_fcs",
|
|
FT_UINT16, BASE_HEX, VALS(option_fcs_vals), 0x0,
|
|
"Frame Check Sequence", HFILL }
|
|
},
|
|
{ &hf_btl2cap_option_window,
|
|
{ "Extended Window Size", "btl2cap.option_window",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_btl2cap_option,
|
|
{ "Configuration Parameter Option", "btl2cap.conf_param_option",
|
|
FT_NONE, BASE_NONE, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_btl2cap_control_sar,
|
|
{ "Segmentation and reassembly", "btl2cap.control_sar",
|
|
FT_UINT16, BASE_HEX, VALS(control_sar_vals), 0xC000,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_btl2cap_control_reqseq,
|
|
{ "ReqSeq", "btl2cap.control_reqseq",
|
|
FT_UINT16, BASE_DEC, NULL, 0x3F00,
|
|
"Request Sequence Number", HFILL }
|
|
},
|
|
{ &hf_btl2cap_control_txseq,
|
|
{ "TxSeq", "btl2cap.control_txseq",
|
|
FT_UINT16, BASE_DEC, NULL, 0x007E,
|
|
"Transmitted Sequence Number", HFILL }
|
|
},
|
|
{ &hf_btl2cap_control_retransmissiondisable,
|
|
{ "R", "btl2cap.control_retransmissiondisable",
|
|
FT_UINT16, BASE_HEX, NULL, 0x0080,
|
|
"Retransmission Disable", HFILL }
|
|
},
|
|
{ &hf_btl2cap_control_supervisory,
|
|
{ "S", "btl2cap.control_supervisory",
|
|
FT_UINT16, BASE_HEX, VALS(control_supervisory_vals), 0x000C,
|
|
"Supervisory Function", HFILL }
|
|
},
|
|
{ &hf_btl2cap_control_type,
|
|
{ "Frame Type", "btl2cap.control_type",
|
|
FT_UINT16, BASE_HEX, VALS(control_type_vals), 0x0001,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_btl2cap_control,
|
|
{ "Control field", "btl2cap.control",
|
|
FT_NONE, BASE_NONE, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_btl2cap_fcs,
|
|
{ "FCS", "btl2cap.fcs",
|
|
FT_UINT16, BASE_HEX, NULL, 0,
|
|
"Frame Check Sequence", HFILL }
|
|
},
|
|
{ &hf_btl2cap_sdulength,
|
|
{ "SDU Length", "btl2cap.sdulength",
|
|
FT_UINT16, BASE_DEC, NULL, 0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_btl2cap_reassembled_in,
|
|
{ "This SDU is reassembled in frame", "btl2cap.reassembled_in",
|
|
FT_FRAMENUM, BASE_NONE, NULL, 0,
|
|
"This SDU is reassembled in frame #", HFILL }
|
|
},
|
|
{ &hf_btl2cap_continuation_to,
|
|
{ "This is a continuation to the SDU in frame", "btl2cap.continuation_to",
|
|
FT_FRAMENUM, BASE_NONE, NULL, 0,
|
|
"This is a continuation to the SDU in frame #", HFILL }
|
|
}
|
|
};
|
|
|
|
/* Setup protocol subtree array */
|
|
static gint *ett[] = {
|
|
&ett_btl2cap,
|
|
&ett_btl2cap_cmd,
|
|
&ett_btl2cap_option,
|
|
&ett_btl2cap_extfeatures,
|
|
&ett_btl2cap_fixedchans,
|
|
&ett_btl2cap_control
|
|
};
|
|
|
|
/* Register the protocol name and description */
|
|
proto_btl2cap = proto_register_protocol("Bluetooth L2CAP Packet", "L2CAP", "btl2cap");
|
|
|
|
register_dissector("btl2cap", dissect_btl2cap, proto_btl2cap);
|
|
|
|
/* subdissector code */
|
|
l2cap_psm_dissector_table = register_dissector_table("btl2cap.psm", "L2CAP PSM", FT_UINT16, BASE_HEX);
|
|
l2cap_cid_dissector_table = register_dissector_table("btl2cap.cid", "L2CAP CID", FT_UINT16, BASE_HEX);
|
|
|
|
/* Required function calls to register the header fields and subtrees used */
|
|
proto_register_field_array(proto_btl2cap, hf, array_length(hf));
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
|
|
cid_to_psm_table=se_tree_create(EMEM_TREE_TYPE_RED_BLACK, "btl2cap scid to psm");
|
|
|
|
}
|
|
|
|
|
|
void
|
|
proto_reg_handoff_btl2cap(void)
|
|
{
|
|
|
|
}
|
|
|
|
|