2340 lines
90 KiB
C
2340 lines
90 KiB
C
/* packet-allJoyn.c
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* Routines for AllJoyn (AllJoyn.org) packet dissection
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* Copyright (c) 2013-2014, The Linux Foundation.
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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 modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (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 along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 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 <glib.h>
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void proto_register_AllJoyn(void);
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void proto_reg_handoff_AllJoyn(void);
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static const int name_server_port = 9956;
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static const int message_port = 9955;
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/* DBus limits array length to 2^26. AllJoyn limits it to 2^17 */
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#define MAX_ARRAY_LEN 131072
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/* DBus limits packet length to 2^27. AllJoyn limits it further to 2^17 + 4096 to allow for 2^17 payload */
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#define MAX_PACKET_LEN (MAX_ARRAY_LEN + 4096)
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/* The following are protocols within a frame.
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The actual value of the handle is set when the various fields are
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registered in proto_register_AllJoyn() with a call to
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proto_register_protocol().
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*/
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static int proto_AllJoyn_mess = -1; /* The top level. Entire AllJoyn message protocol. */
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/* These are Wireshark header fields. You can search/filter on these values. */
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/* The initial byte sent when first connecting. */
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static int hf_alljoyn_connect_byte_value = -1;
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/* SASL fields. */
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static int hf_alljoyn_sasl_command = -1;
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static int hf_alljoyn_sasl_parameter = -1;
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/* Message header fields.
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See http://dbus.freedesktop.org/doc/dbus-specification.html#message-protocol-messages
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for details. */
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static int hf_alljoyn_mess_header = -1; /* The complete header. */
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static int hf_alljoyn_mess_header_endian = -1; /* 1st byte. */
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static int hf_alljoyn_mess_header_type = -1; /* 2nd byte. */
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static int hf_alljoyn_mess_header_flags = -1; /* 3rd byte. */
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static int hf_alljoyn_mess_header_majorversion = -1; /* 4th byte. */
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static int hf_alljoyn_mess_header_body_length = -1; /* 1st uint32. */
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static int hf_alljoyn_mess_header_serial = -1; /* 2nd uint32. */
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static int hf_alljoyn_mess_header_header_length = -1;/* 3rd uint32. AllJoyn extension. */
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static int hf_alljoyn_mess_header_flags_no_reply = -1; /* Part of 3rd byte. */
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static int hf_alljoyn_mess_header_flags_no_auto_start = -1; /* Part of 3rd byte. */
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static int hf_alljoyn_mess_header_flags_allow_remote_msg = -1; /* Part of 3rd byte. */
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static int hf_alljoyn_mess_header_flags_sessionless = -1; /* Part of 3rd byte. */
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static int hf_alljoyn_mess_header_flags_global_broadcast = -1; /* Part of 3rd byte. */
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static int hf_alljoyn_mess_header_flags_compressed = -1; /* Part of 3rd byte. */
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static int hf_alljoyn_mess_header_flags_encrypted = -1; /* Part of 3rd byte. */
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static int hf_alljoyn_mess_header_field = -1;
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static int hf_alljoyn_mess_header_fields = -1;
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static int hf_alljoyn_mess_body_header_fieldcode = -1;
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static int hf_alljoyn_mess_body_header_typeid = -1;
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static int hf_alljoyn_mess_body_array = -1;
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static int hf_alljoyn_mess_body_structure = -1;
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static int hf_alljoyn_mess_body_dictionary_entry = -1;
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static int hf_alljoyn_mess_body_parameters = -1;
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static int hf_alljoyn_mess_body_variant = -1;
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static int hf_alljoyn_mess_body_signature = -1;
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static int hf_alljoyn_mess_body_signature_length = -1;
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static int hf_alljoyn_boolean = -1;
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static int hf_alljoyn_uint8 = -1;
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static int hf_alljoyn_int16 = -1;
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static int hf_alljoyn_uint16 = -1;
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static int hf_alljoyn_int32 = -1;
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static int hf_alljoyn_handle = -1;
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static int hf_alljoyn_uint32 = -1;
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static int hf_alljoyn_int64 = -1;
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static int hf_alljoyn_uint64 = -1;
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static int hf_alljoyn_double = -1;
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#define MESSAGE_HEADER_FLAG_NO_REPLY_EXPECTED 0x01
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#define MESSAGE_HEADER_FLAG_NO_AUTO_START 0x02
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#define MESSAGE_HEADER_FLAG_ALLOW_REMOTE_MSG 0x04
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#define MESSAGE_HEADER_FLAG_SESSIONLESS 0x10
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#define MESSAGE_HEADER_FLAG_GLOBAL_BROADCAST 0x20
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#define MESSAGE_HEADER_FLAG_COMPRESSED 0x40
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#define MESSAGE_HEADER_FLAG_ENCRYPTED 0x80
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/* Protocol identifiers. */
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static int proto_AllJoyn_ns = -1; /* The top level. Entire AllJoyn Name Service protocol. */
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static int hf_alljoyn_answer = -1;
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static int hf_alljoyn_isat_entry = -1;
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static int hf_alljoyn_isat_guid_string = -1;
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static int hf_alljoyn_ns_header = -1;
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static int hf_alljoyn_ns_sender_version = -1;
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static int hf_alljoyn_ns_message_version = -1;
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static int hf_alljoyn_ns_questions = -1;
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static int hf_alljoyn_ns_answers = -1;
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static int hf_alljoyn_ns_timer = -1;
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/* These are bit masks for version 0 "who has" records. */
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/* These bits are deprecated and do not exist for version 1. */
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#define WHOHAS_T 0x08
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#define WHOHAS_U 0x04
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#define WHOHAS_S 0x02
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#define WHOHAS_F 0x01
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static int hf_alljoyn_ns_whohas = -1;
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static int hf_alljoyn_ns_whohas_t_flag = -1; /* 0x8 -- TCP */
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static int hf_alljoyn_ns_whohas_u_flag = -1; /* 0x4 -- UDP */
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static int hf_alljoyn_ns_whohas_s_flag = -1; /* 0x2 -- IPV6 */
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static int hf_alljoyn_ns_whohas_f_flag = -1; /* 0x1 -- IPV4 */
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/* End of version 0 bit masks. */
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static int hf_alljoyn_ns_whohas_count = -1; /* octet count of bus names */
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/* Bitmasks common to v0 and v1 IS-AT messages. */
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#define ISAT_C 0x10
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#define ISAT_G 0x20
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/* Bitmasks for v0 IS-AT messages. */
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#define ISAT_F 0x01
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#define ISAT_S 0x02
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#define ISAT_U 0x04
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#define ISAT_T 0x08
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/* Bitmasks for v1 IS-AT messages. */
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#define ISAT_U6 0x01
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#define ISAT_R6 0x02
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#define ISAT_U4 0x04
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#define ISAT_R4 0x08
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/* Bitmasks for v1 transports. */
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#define TRANSPORT_LOCAL 0x0001 /* Local (same device) transport. */
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#define TRANSPORT_BLUETOOTH 0x0002 /* Bluetooth transport. */
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#define TRANSPORT_TCP 0x0004 /* Transport using TCP (same as TRANSPORT_WLAN). */
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#define TRANSPORT_WWAN 0x0008 /* Wireless wide-area network transport. */
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#define TRANSPORT_LAN 0x0010 /* Wired local-area network transport. */
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#define TRANSPORT_ICE 0x0020 /* Transport using ICE protocol. */
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#define TRANSPORT_WFD 0x0080 /* Transport using Wi-Fi Direct transport. */
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/* Tree indexes common to v0 and v1 IS-AT messages. */
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static int hf_alljoyn_ns_isat_g_flag = -1; /* 0x20 -- GUID present */
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static int hf_alljoyn_ns_isat_c_flag = -1; /* 0x10 -- Complete */
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/* Tree indexes for v0 IS-AT messages. */
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static int hf_alljoyn_ns_isat_t_flag = -1; /* 0x8 -- TCP */
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static int hf_alljoyn_ns_isat_u_flag = -1; /* 0x4 -- UDP */
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static int hf_alljoyn_ns_isat_s_flag = -1; /* 0x2 -- IPV6 */
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static int hf_alljoyn_ns_isat_f_flag = -1; /* 0x1 -- IPV4 */
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static int hf_alljoyn_ns_isat_count = -1; /* octet count of bus names */
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static int hf_alljoyn_ns_isat_port = -1; /* two octets of port number */
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static int hf_alljoyn_ns_isat_ipv4 = -1; /* four octets of IPv4 address */
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static int hf_alljoyn_ns_isat_ipv6 = -1; /* sixteen octets of IPv6 address */
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/* Tree indexes for v1 IS-AT messages. */
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static int hf_alljoyn_ns_isat_u6_flag = -1; /* 0x8 -- UDP IPV6 */
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static int hf_alljoyn_ns_isat_r6_flag = -1; /* 0x4 -- TCP IPV6 */
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static int hf_alljoyn_ns_isat_u4_flag = -1; /* 0x2 -- UDP IPV4 */
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static int hf_alljoyn_ns_isat_r4_flag = -1; /* 0x1 -- TCP IPV4 */
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static int hf_alljoyn_ns_isat_transport_mask = -1; /* All bits of the transport mask. */
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/* Individual bits of the mask. */
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static int hf_alljoyn_ns_isat_transport_mask_local = -1; /* Local (same device) transport */
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static int hf_alljoyn_ns_isat_transport_mask_bluetooth = -1;/* Bluetooth transport */
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static int hf_alljoyn_ns_isat_transport_mask_tcp = -1; /* Transport using TCP (same as TRANSPORT_WLAN) */
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static int hf_alljoyn_ns_isat_transport_mask_wwan = -1; /* Wireless wide-area network transport */
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static int hf_alljoyn_ns_isat_transport_mask_lan = -1; /* Wired local-area network transport */
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static int hf_alljoyn_ns_isat_transport_mask_ice = -1; /* Transport using ICE protocol */
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static int hf_alljoyn_ns_isat_transport_mask_wfd = -1; /* Transport using Wi-Fi Direct transport */
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static int hf_alljoyn_string = -1;
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static int hf_alljoyn_string_size_8bit = -1; /* 8-bit size of string */
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static int hf_alljoyn_string_size_32bit = -1; /* 32-bit size of string */
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static int hf_alljoyn_string_data = -1; /* string characters */
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/* These are the ids of the subtrees we will be creating */
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static gint ett_alljoyn_ns = -1; /* This is the top NS tree. */
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static gint ett_alljoyn_ns_header = -1;
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static gint ett_alljoyn_ns_answers = -1;
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static gint ett_alljoyn_ns_guid_string = -1;
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static gint ett_alljoyn_ns_isat_entry = -1;
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static gint ett_alljoyn_ns_string = -1;
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static gint ett_alljoyn_whohas = -1;
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static gint ett_alljoyn_string = -1;
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static gint ett_alljoyn_isat_entry = -1;
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static gint ett_alljoyn_mess = -1; /* This is the top message tree. */
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static gint ett_alljoyn_header = -1;
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static gint ett_alljoyn_header_flags = -1;
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static gint ett_alljoyn_mess_header_field = -1;
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static gint ett_alljoyn_mess_header = -1;
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static gint ett_alljoyn_mess_body_parameters = -1;
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#define ROUND_TO_2BYTE(len) ((len + 1) & ~1)
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#define ROUND_TO_4BYTE(len) ((len + 3) & ~3)
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#define ROUND_TO_8BYTE(len) ((len + 7) & ~7)
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static const value_string endian_encoding_vals[] = {
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{ 'B', "Big endian" },
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{ 'l', "Little endian" },
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{ 0, NULL },
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};
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#define MESSAGE_TYPE_INVALID 0
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#define MESSAGE_TYPE_METHOD_CALL 1
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#define MESSAGE_TYPE_METHOD_REPLY 2
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#define MESSAGE_TYPE_ERROR_REPLY 3
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#define MESSAGE_TYPE_SIGNAL 4
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static const value_string message_header_encoding_vals[] = {
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{ MESSAGE_TYPE_INVALID, "Invalid type" },
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{ MESSAGE_TYPE_METHOD_CALL, "Method call" },
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{ MESSAGE_TYPE_METHOD_REPLY, "Method reply with returned data" },
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{ MESSAGE_TYPE_ERROR_REPLY, "Error reply" },
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{ MESSAGE_TYPE_SIGNAL, "Signal emission" },
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{ 0, NULL }
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};
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/*
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* The array at the end of the header contains header fields,
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* where each field is a 1-byte field code followed by a field value.
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* See also: http://dbus.freedesktop.org/doc/dbus-specification.html#message-protocol-messages
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*
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* In the D-Bus world these are the "field codes".
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* In the AllJoyn world these are called "field types".
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*/
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#define HDR_INVALID 0x00
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#define HDR_OBJ_PATH 0x01
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#define HDR_INTERFACE 0x02
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#define HDR_MEMBER 0x03
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#define HDR_ERROR_NAME 0x04
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#define HDR_REPLY_SERIAL 0x05
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#define HDR_DESTINATION 0x06
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#define HDR_SENDER 0x07
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#define HDR_SIGNATURE 0x08
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#define HDR_HANDLES 0x09
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#define HDR_TIMESTAMP 0x10 /* AllJoyn specific headers start at 0x10 */
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#define HDR_TIME_TO_LIVE 0x11
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#define HDR_COMPRESSION_TOKEN 0x12
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#define HDR_SESSION_ID 0x13
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static const value_string header_field_encoding_vals[] = {
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{ HDR_INVALID, "Invalid" }, /* Not a valid field name (error if it appears in a message). */
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{ HDR_OBJ_PATH, "Object Path" }, /* The object to send a call to, or the object a signal
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is emitted from. */
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{ HDR_INTERFACE, "Interface" }, /* The interface to invoke a method call on, or that a
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signal is emitted from. Optional for method calls,
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required for signals. */
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{ HDR_MEMBER, "Member" }, /* The member, either the method name or signal name. */
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{ HDR_ERROR_NAME, "Error Name" }, /* The name of the error that occurred, for errors. */
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{ HDR_REPLY_SERIAL, "Reply Serial" }, /* The serial number of the message this message is a reply to. */
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{ HDR_DESTINATION, "Destination" }, /* The name of the connection this message is intended for. */
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{ HDR_SENDER, "Sender" }, /* Unique name of the sending connection. */
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{ HDR_SIGNATURE, "Signature" }, /* The signature of the message body. */
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{ HDR_HANDLES, "Handles" }, /* The number of handles (Unix file descriptors) that
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accompany the message. */
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{ HDR_TIMESTAMP, "Time stamp" },
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{ HDR_TIME_TO_LIVE, "Time to live" },
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{ HDR_COMPRESSION_TOKEN, "Compression token" },
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{ HDR_SESSION_ID, "Session ID" },
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{ 0, NULL }
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};
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/* Gets a 32-bit unsigned integer from the packet buffer with
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* the proper byte-swap.
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* @param tvb is the incoming network data buffer.
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* @param offset is the incoming network data buffer.
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* @param encoding is the incoming network data buffer.
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* @return The 32-bit unsigned int interpretation of the bits
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* in the buffer.
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*/
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static guint32
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get_uint32(tvbuff_t *tvb,
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gint32 offset,
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gint encoding)
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{
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return (ENC_BIG_ENDIAN == encoding) ?
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tvb_get_ntohl(tvb, offset) :
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tvb_get_letohl(tvb, offset);
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}
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/* This is called by dissect_AllJoyn_message() to handle the initial byte for
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* a connect message.
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* If it was the intial byte for a connect message and was handled then return
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* the number of bytes consumed out of the packet. If not an connect initial
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* byte message or unhandled return 0.
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* @param tvb is the incoming network data buffer.
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* @param pinfo contains information about the incoming packet which
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* we update as we dissect the packet.
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* @param offset is the offset into the packet to check for the connect message.
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* @param message_tree is the subtree that any connect data items should be added to.
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* @returns the offset into the packet that has successfully been handled or
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* the input offset value if it was not the connect initial byte of 0.
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*/
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static gint
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handle_message_connect(tvbuff_t *tvb,
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packet_info *pinfo,
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gint offset,
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proto_tree *message_tree)
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{
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guint8 the_one_byte;
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the_one_byte = tvb_get_guint8(tvb, offset);
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if(0 == the_one_byte) {
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col_set_str(pinfo->cinfo, COL_INFO, "CONNECT-initial byte");
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/* Now add the value as a subtree to the inital byte. */
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proto_tree_add_item(message_tree, hf_alljoyn_connect_byte_value, tvb, offset, 1, ENC_NA);
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offset += 1;
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}
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return offset;
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}
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typedef struct _sasl_cmd
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{
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const gchar *text;
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guint length;
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} sasl_cmd;
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static const gchar CMD_AUTH[] = "AUTH";
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static const gchar CMD_CANCEL[] = "CANCEL";
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static const gchar CMD_BEGIN[] = "BEGIN";
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static const gchar CMD_DATA[] = "DATA";
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static const gchar CMD_ERROR[] = "ERROR";
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static const gchar CMD_REJECTED[] = "REJECTED";
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static const gchar CMD_OK[] = "OK";
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#define MAX_SASL_COMMAND_LENGTH sizeof(CMD_REJECTED)
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/* The 256 is just something I pulled out of the air. */
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#define MAX_SASL_PACKET_LENGTH (MAX_SASL_COMMAND_LENGTH + 256)
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static const sasl_cmd sasl_commands[] = {
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{CMD_AUTH, G_N_ELEMENTS(CMD_AUTH) - 1},
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{CMD_CANCEL, G_N_ELEMENTS(CMD_CANCEL) - 1},
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{CMD_BEGIN, G_N_ELEMENTS(CMD_BEGIN) - 1},
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{CMD_DATA, G_N_ELEMENTS(CMD_DATA) - 1},
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{CMD_ERROR, G_N_ELEMENTS(CMD_ERROR) - 1},
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{CMD_REJECTED, G_N_ELEMENTS(CMD_REJECTED) - 1},
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{CMD_OK, G_N_ELEMENTS(CMD_OK) - 1},
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};
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static const gint sasl_commands_count = G_N_ELEMENTS(sasl_commands);
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static const sasl_cmd *
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find_sasl_command(tvbuff_t *tvb,
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gint offset)
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{
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gint command_index;
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for(command_index = 0; command_index < sasl_commands_count; command_index++) {
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const sasl_cmd *cmd;
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cmd = &sasl_commands[command_index];
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if(0 == tvb_strneql(tvb, offset, cmd->text, cmd->length)) {
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return cmd;
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}
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}
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return NULL;
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}
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/* This is called by dissect_AllJoyn_message() to handle SASL messages.
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* If it was a SASL message and was handled then return the number of bytes
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* used (should be the entire packet). If not a SASL message or unhandled return 0.
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* If more bytes are needed then return the negative of the bytes expected.
|
|
* @param tvb is the incoming network data buffer.
|
|
* @param pinfo contains information about the incoming packet which
|
|
* we update as we dissect the packet.
|
|
* @param offset is the offset into the packet to start processing.
|
|
* @param message_tree is the subtree that any connect data items should be added to.
|
|
*/
|
|
static gint
|
|
handle_message_sasl(tvbuff_t *tvb,
|
|
packet_info *pinfo,
|
|
gint offset,
|
|
proto_tree *message_tree)
|
|
{
|
|
gint return_value = offset;
|
|
const sasl_cmd *command;
|
|
|
|
command = find_sasl_command(tvb, offset);
|
|
|
|
if(command) {
|
|
/* This gives us the offset into the buffer of the terminating
|
|
character of the command, the '\n'. + 1 to get the number of bytes
|
|
used for the command in the buffer. */
|
|
return_value = tvb_find_guint8(tvb, offset + command->length, -1, '\n') + 1;
|
|
|
|
/* If not found see if we should request another segment. */
|
|
if(0 == return_value) {
|
|
if((guint)tvb_captured_length_remaining(tvb, offset) < MAX_SASL_PACKET_LENGTH && pinfo->can_desegment) {
|
|
pinfo->desegment_len = DESEGMENT_ONE_MORE_SEGMENT;
|
|
/* pinfo->desegment_offset is set by the caller. */
|
|
}
|
|
|
|
/*
|
|
* Return 0, which means "I didn't dissect anything because I don't have enough data
|
|
* - we need to desegment". Or if no desegmentation available we can't handle this.
|
|
*/
|
|
}
|
|
|
|
if(return_value > 0) {
|
|
gint length;
|
|
|
|
col_add_fstr(pinfo->cinfo, COL_INFO, "SASL-%s", command->text);
|
|
|
|
length = command->length;
|
|
|
|
/* Add a subtree/row for the command. */
|
|
proto_tree_add_item(message_tree, hf_alljoyn_sasl_command, tvb, 0, length, ENC_ASCII|ENC_NA);
|
|
|
|
length = return_value - command->length;
|
|
|
|
/* Add a subtree for the parameter. */
|
|
proto_tree_add_item(message_tree, hf_alljoyn_sasl_parameter, tvb, command->length, length, ENC_ASCII|ENC_NA);
|
|
}
|
|
}
|
|
|
|
return return_value;
|
|
}
|
|
|
|
#define ENC_ALLJOYN_BAD_ENCODING 0xBADF00D
|
|
|
|
#define ENDIANNESS_OFFSET 0 /* The offset for endianness is always 0. */
|
|
|
|
/* This is called by handle_message_header_body() to get the endianness from
|
|
* message headers.
|
|
* @param tvb is the incoming network data buffer.
|
|
* @param offset is the current offset into network data buffer.
|
|
* @return The type of encoding, ENC_LITTLE_ENDIAN or ENC_BIG_ENDIAN, for
|
|
* the message.
|
|
*/
|
|
static guint32
|
|
get_message_header_endianness(tvbuff_t *tvb,
|
|
gint offset)
|
|
{
|
|
guint8 endianness;
|
|
guint encoding;
|
|
|
|
/* The endianness field. */
|
|
endianness = tvb_get_guint8(tvb, offset + ENDIANNESS_OFFSET);
|
|
|
|
switch(endianness)
|
|
{
|
|
case 'l':
|
|
encoding = ENC_LITTLE_ENDIAN;
|
|
break;
|
|
case 'B':
|
|
encoding = ENC_BIG_ENDIAN;
|
|
break;
|
|
default:
|
|
encoding = ENC_ALLJOYN_BAD_ENCODING;
|
|
break;
|
|
}
|
|
|
|
return encoding;
|
|
}
|
|
|
|
/* This is called by handle_message_field() to handle bytes of particular values
|
|
* in messages.
|
|
* @param tvb is the incoming network data buffer.
|
|
* @param offset is the offset into the packet to start processing.
|
|
* @param field_tree is the subtree that we connect data items to.
|
|
* @param expected_value is the value the byte is expected to have.
|
|
*/
|
|
static void
|
|
handle_message_header_expected_byte(tvbuff_t *tvb,
|
|
gint offset,
|
|
proto_tree *field_tree,
|
|
guint8 expected_value)
|
|
{
|
|
proto_item *item;
|
|
guint8 byte_value;
|
|
|
|
item = proto_tree_add_item(field_tree, hf_alljoyn_uint8, tvb, offset, 1, ENC_NA);
|
|
byte_value = tvb_get_guint8(tvb, offset);
|
|
|
|
if(expected_value == byte_value) {
|
|
proto_item_set_text(item, "0x%02x byte", expected_value);
|
|
} else {
|
|
proto_item_set_text(item, "Expected '0x%02x byte' but found '0x%02x'", expected_value, byte_value);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Message argument types
|
|
*/
|
|
#define ARG_INVALID '\0'
|
|
#define ARG_ARRAY 'a' /* AllJoyn array container type */
|
|
#define ARG_BOOLEAN 'b' /* AllJoyn boolean basic type */
|
|
#define ARG_DOUBLE 'd' /* AllJoyn IEEE 754 double basic type */
|
|
#define ARG_SIGNATURE 'g' /* AllJoyn signature basic type */
|
|
#define ARG_HANDLE 'h' /* AllJoyn socket handle basic type */
|
|
#define ARG_INT32 'i' /* AllJoyn 32-bit signed integer basic type */
|
|
#define ARG_INT16 'n' /* AllJoyn 16-bit signed integer basic type */
|
|
#define ARG_OBJ_PATH 'o' /* AllJoyn Name of an AllJoyn object instance basic type */
|
|
#define ARG_UINT16 'q' /* AllJoyn 16-bit unsigned integer basic type */
|
|
#define ARG_STRING 's' /* AllJoyn UTF-8 NULL terminated string basic type */
|
|
#define ARG_UINT64 't' /* AllJoyn 64-bit unsigned integer basic type */
|
|
#define ARG_UINT32 'u' /* AllJoyn 32-bit unsigned integer basic type */
|
|
#define ARG_VARIANT 'v' /* AllJoyn variant container type */
|
|
#define ARG_INT64 'x' /* AllJoyn 64-bit signed integer basic type */
|
|
#define ARG_BYTE 'y' /* AllJoyn 8-bit unsigned integer basic type */
|
|
#define ARG_STRUCT '(' /* AllJoyn struct container type */
|
|
#define ARG_DICT_ENTRY '{' /* AllJoyn dictionary or map container type - an array of key-value pairs */
|
|
|
|
static gint
|
|
pad_according_to_type(gint offset, gint max_offset, guint8 type)
|
|
{
|
|
switch(type)
|
|
{
|
|
case ARG_BYTE:
|
|
break;
|
|
|
|
case ARG_DOUBLE:
|
|
case ARG_UINT64:
|
|
case ARG_INT64:
|
|
case ARG_STRUCT:
|
|
case ARG_DICT_ENTRY:
|
|
offset = ROUND_TO_8BYTE(offset);
|
|
break;
|
|
|
|
case ARG_SIGNATURE:
|
|
break;
|
|
|
|
case ARG_HANDLE:
|
|
break;
|
|
|
|
case ARG_INT32:
|
|
case ARG_UINT32:
|
|
case ARG_BOOLEAN:
|
|
offset = ROUND_TO_4BYTE(offset);
|
|
break;
|
|
|
|
case ARG_INT16:
|
|
case ARG_UINT16:
|
|
offset = ROUND_TO_2BYTE(offset);
|
|
break;
|
|
|
|
case ARG_STRING:
|
|
break;
|
|
|
|
case ARG_VARIANT:
|
|
break;
|
|
|
|
case ARG_OBJ_PATH:
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if(offset > max_offset) {
|
|
offset = max_offset;
|
|
}
|
|
|
|
return offset;
|
|
}
|
|
|
|
/* This is called by parse_arg to append the signature of structure or dictionary
|
|
* to an item. This is complicated a bit by the fact that structures can be nested.
|
|
* @param item is the item to append the signature data to.
|
|
* @param signature points to the signature to be appended.
|
|
* @param signature_max_length is the specificied maximum length of this signature.
|
|
* @param type_stop is the character when indicates the end of the signature.
|
|
*/
|
|
static void
|
|
append_struct_signature(proto_item *item,
|
|
guint8 *signature,
|
|
gint signature_max_length,
|
|
const guint8 type_stop)
|
|
{
|
|
int depth = 0;
|
|
guint8 type_start;
|
|
gint signature_length = 0;
|
|
|
|
proto_item_append_text(item, "%c", ' ');
|
|
type_start = *signature;
|
|
|
|
do {
|
|
if(type_start == *signature) {
|
|
depth++;
|
|
}
|
|
|
|
if(type_stop == *signature) {
|
|
depth--;
|
|
}
|
|
|
|
proto_item_append_text(item, "%c", *signature++);
|
|
} while(depth > 0 && ++signature_length < signature_max_length);
|
|
|
|
if(signature_length >= signature_max_length) {
|
|
proto_item_append_text(item, "... Invalid signature!");
|
|
}
|
|
}
|
|
|
|
/* This is called to handle a single typed argument. Recursion is used
|
|
* to handle arrays and structures.
|
|
* @param tvb is the incoming network data buffer.
|
|
* @param pinfo contains information about the incoming packet which
|
|
* we update as we dissect the packet.
|
|
* @param header_item, if not NULL, is appended with the text name of the data type.
|
|
* @param encoding indicates big (ENC_BIG_ENDIAN) or little (ENC_LITTLE_ENDIAN)
|
|
* @param offset is the offset into tvb to get the field from.
|
|
* @param field_tree is the tree to which this argument should be attached.
|
|
* @param is_reply_to, if TRUE, means this uint32 value should be used to update
|
|
* header_item and pinfo->cinfo with a special message.
|
|
* @param type_id is the type of this argument.
|
|
* @param field_code is the type of header, or HDR_INVALID if not used, which this
|
|
* arg is a part of. If field_code is HDR_MEMBER or HDR_SIGNATURE then
|
|
* pinfo->cinfo is updated with information.
|
|
* @param signature is a pointer to the signature of the parameters. If type_id is
|
|
* ARG_SIGNATURE this is a return value for the caller to pass to the function
|
|
* that parses the parameters. If type_id is something like ARG_STRUCT then it points
|
|
* to the actual signature of the type.
|
|
* @param signature_length is a pointer to the length of the signature and if type_id is
|
|
* ARG_SIGNATURE this is a return value for the caller to pass to the function
|
|
* that parses the parameters.
|
|
* @return The new offset into the buffer after removing the field code and value.
|
|
* the message or the packet length to stop further processing if "really bad"
|
|
* parameters come in.
|
|
*/
|
|
static gint
|
|
parse_arg(tvbuff_t *tvb,
|
|
packet_info *pinfo,
|
|
proto_item *header_item,
|
|
guint encoding,
|
|
gint offset,
|
|
proto_tree *field_tree,
|
|
gboolean is_reply_to,
|
|
guint8 type_id,
|
|
guint8 field_code,
|
|
guint8 **signature,
|
|
guint8 *signature_length)
|
|
{
|
|
gint length;
|
|
const gchar *header_type_name = NULL;
|
|
|
|
switch(type_id)
|
|
{
|
|
case ARG_INVALID:
|
|
header_type_name = "invalid";
|
|
offset = ROUND_TO_8BYTE(offset + 1);
|
|
break;
|
|
|
|
case ARG_ARRAY: /* AllJoyn array container type */
|
|
{
|
|
static gchar bad_array_format[] = "BAD DATA: Array length (in bytes) is %d. Remaining packet length is %d.";
|
|
proto_item *item;
|
|
proto_tree *tree;
|
|
guint8 *sig_saved;
|
|
gint starting_offset;
|
|
gint number_of_items = 0;
|
|
guint8 remaining_sig_length = *signature_length;
|
|
gint packet_length = (gint)tvb_reported_length(tvb);
|
|
|
|
header_type_name = "array";
|
|
|
|
if(*signature == NULL || *signature_length < 1) {
|
|
col_add_fstr(pinfo->cinfo, COL_INFO, "BAD DATA: A %s argument needs a signature.", header_type_name);
|
|
return tvb_reported_length(tvb);
|
|
}
|
|
|
|
/* *sig_saved will now be the element type after the 'a'. */
|
|
sig_saved = (*signature) + 1;
|
|
offset = ROUND_TO_4BYTE(offset);
|
|
|
|
/* This is the length of the entire array in bytes but does not include the length value. */
|
|
length = (gint)get_uint32(tvb, offset, encoding);
|
|
|
|
starting_offset = pad_according_to_type(offset + 4, packet_length, *sig_saved); /* Advance to the data elements. */
|
|
|
|
if(length < 0 || length > MAX_ARRAY_LEN || starting_offset + length > packet_length) {
|
|
col_add_fstr(pinfo->cinfo, COL_INFO, bad_array_format, length, tvb_reported_length_remaining(tvb, starting_offset));
|
|
return tvb_reported_length(tvb);
|
|
}
|
|
|
|
/* This item is the entire array including the length specifier plus any pad bytes. */
|
|
item = proto_tree_add_item(field_tree, hf_alljoyn_mess_body_array, tvb, offset, (starting_offset-offset) + length, encoding);
|
|
tree = proto_item_add_subtree(item, ett_alljoyn_mess_body_parameters);
|
|
|
|
offset = starting_offset;
|
|
|
|
while((offset - starting_offset) < length) {
|
|
guint8 *sig_pointer;
|
|
|
|
number_of_items++;
|
|
sig_pointer = sig_saved;
|
|
remaining_sig_length = *signature_length - 1;
|
|
|
|
offset = parse_arg(tvb,
|
|
pinfo,
|
|
header_item,
|
|
encoding,
|
|
offset,
|
|
tree,
|
|
is_reply_to,
|
|
*sig_pointer,
|
|
field_code,
|
|
&sig_pointer,
|
|
&remaining_sig_length);
|
|
|
|
/* Set the signature pointer to be just past the type just handled. */
|
|
*signature = sig_pointer;
|
|
}
|
|
|
|
*signature_length = remaining_sig_length;
|
|
|
|
if(item) {
|
|
proto_item_append_text(item, " of %d '%c' elements", number_of_items, *sig_saved);
|
|
}
|
|
}
|
|
break;
|
|
|
|
case ARG_BOOLEAN: /* AllJoyn boolean basic type */
|
|
header_type_name = "boolean";
|
|
offset = ROUND_TO_4BYTE(offset);
|
|
|
|
proto_tree_add_item(field_tree, hf_alljoyn_boolean, tvb, offset, 4, encoding);
|
|
offset += 4;
|
|
break;
|
|
|
|
case ARG_DOUBLE: /* AllJoyn IEEE 754 double basic type */
|
|
header_type_name = "IEEE 754 double";
|
|
offset = ROUND_TO_8BYTE(offset);
|
|
|
|
proto_tree_add_item(field_tree, hf_alljoyn_double, tvb, offset, 8, encoding);
|
|
offset += 8;
|
|
break;
|
|
|
|
case ARG_SIGNATURE: /* AllJoyn signature basic type */
|
|
header_type_name = "signature";
|
|
*signature_length = tvb_get_guint8(tvb, offset);
|
|
|
|
if(*signature_length + 2 > tvb_reported_length_remaining(tvb, offset)) {
|
|
gint bytes_left = tvb_reported_length_remaining(tvb, offset);
|
|
|
|
col_add_fstr(pinfo->cinfo, COL_INFO, "BAD DATA: Signature length is %d. Only %d bytes left in packet.",
|
|
(gint)(*signature_length), bytes_left);
|
|
return tvb_reported_length(tvb);
|
|
}
|
|
|
|
/* Include the terminating '/0'. */
|
|
length = *signature_length + 1;
|
|
|
|
proto_tree_add_item(field_tree, hf_alljoyn_mess_body_signature_length, tvb, offset, 1, encoding);
|
|
offset += 1;
|
|
|
|
proto_tree_add_item(field_tree, hf_alljoyn_mess_body_signature, tvb, offset, length, ENC_ASCII|ENC_NA);
|
|
|
|
*signature = tvb_get_string_enc(wmem_packet_scope(), tvb, offset, length, ENC_ASCII);
|
|
|
|
if(HDR_SIGNATURE == field_code) {
|
|
col_append_fstr(pinfo->cinfo, COL_INFO, " (%s)", *signature);
|
|
}
|
|
|
|
offset += length;
|
|
break;
|
|
|
|
case ARG_HANDLE: /* AllJoyn socket handle basic type. */
|
|
header_type_name = "socket handle";
|
|
offset = ROUND_TO_4BYTE(offset);
|
|
|
|
proto_tree_add_item(field_tree, hf_alljoyn_handle, tvb, offset, 4, encoding);
|
|
offset += 4;
|
|
break;
|
|
|
|
case ARG_INT32: /* AllJoyn 32-bit signed integer basic type. */
|
|
header_type_name = "int32";
|
|
offset = ROUND_TO_4BYTE(offset);
|
|
|
|
proto_tree_add_item(field_tree, hf_alljoyn_int32, tvb, offset, 4, encoding);
|
|
offset += 4;
|
|
break;
|
|
|
|
case ARG_INT16: /* AllJoyn 16-bit signed integer basic type. */
|
|
header_type_name = "int16";
|
|
offset = ROUND_TO_2BYTE(offset);
|
|
|
|
proto_tree_add_item(field_tree, hf_alljoyn_int16, tvb, offset, 2, encoding);
|
|
offset += 2;
|
|
break;
|
|
|
|
case ARG_OBJ_PATH: /* AllJoyn Name of an AllJoyn object instance basic type */
|
|
header_type_name = "object path";
|
|
length = get_uint32(tvb, offset, encoding) + 1;
|
|
|
|
/* The + 4 is for the length specifier. Object pathes may be of "any length"
|
|
according to D-Bus spec. But there are practical limits. */
|
|
if(length < 0 || length > MAX_ARRAY_LEN || length + 4 > tvb_reported_length_remaining(tvb, offset)) {
|
|
col_add_fstr(pinfo->cinfo, COL_INFO, "BAD DATA: Object path length is %d. Only %d bytes left in packet.",
|
|
length, tvb_reported_length_remaining(tvb, offset + 4));
|
|
return tvb_reported_length(tvb);
|
|
}
|
|
|
|
proto_tree_add_item(field_tree, hf_alljoyn_uint32, tvb, offset, 4, encoding);
|
|
offset += 4;
|
|
|
|
proto_tree_add_item(field_tree, hf_alljoyn_string_data, tvb, offset, length, ENC_ASCII|ENC_NA);
|
|
offset += length;
|
|
break;
|
|
|
|
case ARG_UINT16: /* AllJoyn 16-bit unsigned integer basic type */
|
|
header_type_name = "uint16";
|
|
offset = ROUND_TO_2BYTE(offset);
|
|
|
|
proto_tree_add_item(field_tree, hf_alljoyn_uint16, tvb, offset, 2, encoding);
|
|
offset += 2;
|
|
break;
|
|
|
|
case ARG_STRING: /* AllJoyn UTF-8 NULL terminated string basic type */
|
|
header_type_name = "string";
|
|
offset = ROUND_TO_4BYTE(offset);
|
|
|
|
proto_tree_add_item(field_tree, hf_alljoyn_string_size_32bit, tvb, offset, 4, encoding);
|
|
|
|
/* Get the length so we can display the string. */
|
|
length = (gint)get_uint32(tvb, offset, encoding);
|
|
|
|
if(length < 0 || length > tvb_reported_length_remaining(tvb, offset)) {
|
|
col_add_fstr(pinfo->cinfo, COL_INFO, "BAD DATA: String length is %d. Remaining packet length is %d.",
|
|
length, (gint)tvb_reported_length_remaining(tvb, offset));
|
|
return tvb_reported_length(tvb);
|
|
}
|
|
|
|
length += 1; /* Include the '\0'. */
|
|
offset += 4;
|
|
|
|
proto_tree_add_item(field_tree, hf_alljoyn_string_data, tvb, offset, length, ENC_UTF_8|ENC_NA);
|
|
|
|
if(HDR_MEMBER == field_code) {
|
|
guint8 *member_name;
|
|
|
|
member_name = tvb_get_string_enc(wmem_packet_scope(), tvb, offset, length, ENC_UTF_8);
|
|
col_append_fstr(pinfo->cinfo, COL_INFO, " %s", member_name);
|
|
}
|
|
|
|
offset += length;
|
|
break;
|
|
|
|
case ARG_UINT64: /* AllJoyn 64-bit unsigned integer basic type */
|
|
header_type_name = "uint64";
|
|
offset = ROUND_TO_8BYTE(offset);
|
|
|
|
proto_tree_add_item(field_tree, hf_alljoyn_uint64, tvb, offset, 8, encoding);
|
|
offset += 8;
|
|
break;
|
|
|
|
case ARG_UINT32: /* AllJoyn 32-bit unsigned integer basic type */
|
|
header_type_name = "uint32";
|
|
offset = ROUND_TO_4BYTE(offset);
|
|
|
|
if(is_reply_to) {
|
|
static const gchar format[] = " Replies to: %09u";
|
|
guint32 replies_to;
|
|
|
|
replies_to = get_uint32(tvb, offset, encoding);
|
|
col_append_fstr(pinfo->cinfo, COL_INFO, format, replies_to);
|
|
|
|
if(header_item) {
|
|
proto_item *item;
|
|
|
|
item = proto_tree_add_item(field_tree, hf_alljoyn_uint32, tvb, offset, 4, encoding);
|
|
proto_item_set_text(item, format + 1, replies_to);
|
|
}
|
|
} else {
|
|
proto_tree_add_item(field_tree, hf_alljoyn_uint32, tvb, offset, 4, encoding);
|
|
}
|
|
|
|
offset += 4;
|
|
break;
|
|
|
|
case ARG_VARIANT: /* AllJoyn variant container type */
|
|
{
|
|
proto_item *item;
|
|
proto_tree *tree;
|
|
guint8 *sig_saved;
|
|
guint8 *sig_pointer;
|
|
guint8 variant_sig_length;
|
|
|
|
header_type_name = "variant";
|
|
|
|
variant_sig_length = tvb_get_guint8(tvb, offset);
|
|
length = variant_sig_length;
|
|
|
|
if(length > tvb_reported_length_remaining(tvb, offset)) {
|
|
gint bytes_left = tvb_reported_length_remaining(tvb, offset);
|
|
|
|
col_add_fstr(pinfo->cinfo, COL_INFO, "BAD DATA: Variant signature length is %d. Only %d bytes left in packet.",
|
|
length, bytes_left);
|
|
offset = tvb_reported_length(tvb);
|
|
}
|
|
|
|
length += 1; /* Include the terminating '\0'. */
|
|
|
|
/* This length (4) will be updated later with the length of the entire variant object. */
|
|
item = proto_tree_add_item(field_tree, hf_alljoyn_mess_body_variant, tvb, offset, 4, encoding);
|
|
tree = proto_item_add_subtree(item, ett_alljoyn_mess_body_parameters);
|
|
|
|
proto_tree_add_item(tree, hf_alljoyn_mess_body_signature_length, tvb, offset, 1, encoding);
|
|
|
|
offset += 1;
|
|
|
|
tree = proto_item_add_subtree(item, ett_alljoyn_mess_body_parameters);
|
|
proto_tree_add_item(tree, hf_alljoyn_mess_body_signature, tvb, offset, length, ENC_ASCII|ENC_NA);
|
|
|
|
sig_saved = tvb_get_string_enc(wmem_packet_scope(), tvb, offset, length, ENC_ASCII);
|
|
|
|
offset += length;
|
|
sig_pointer = sig_saved;
|
|
|
|
/* The signature of the variant has now been taken care of. So now take care of the variant data. */
|
|
while(((sig_pointer - sig_saved) < (length - 1)) && (tvb_reported_length_remaining(tvb, offset) > 0)) {
|
|
proto_item_append_text(item, "%c", *sig_pointer);
|
|
|
|
offset = parse_arg(tvb, pinfo, header_item, encoding, offset, tree, is_reply_to,
|
|
*sig_pointer, field_code, &sig_pointer, &variant_sig_length);
|
|
}
|
|
|
|
proto_item_append_text(item, "'");
|
|
proto_item_set_end(item, tvb, offset);
|
|
}
|
|
break;
|
|
|
|
case ARG_INT64: /* AllJoyn 64-bit signed integer basic type */
|
|
header_type_name = "int64";
|
|
offset = ROUND_TO_8BYTE(offset);
|
|
|
|
proto_tree_add_item(field_tree, hf_alljoyn_int64, tvb, offset, 8, encoding);
|
|
offset += 8;
|
|
break;
|
|
|
|
case ARG_BYTE: /* AllJoyn 8-bit unsigned integer basic type */
|
|
header_type_name = "byte";
|
|
|
|
proto_tree_add_item(field_tree, hf_alljoyn_uint8, tvb, offset, 1, encoding);
|
|
offset += 1;
|
|
break;
|
|
|
|
case ARG_DICT_ENTRY: /* AllJoyn dictionary or map container type - an array of key-value pairs */
|
|
case ARG_STRUCT: /* AllJoyn struct container type */
|
|
{
|
|
proto_item *item;
|
|
proto_tree *tree;
|
|
int hf;
|
|
guint8 type_stop;
|
|
|
|
if(type_id == ARG_STRUCT) {
|
|
header_type_name = "structure";
|
|
hf = hf_alljoyn_mess_body_structure;
|
|
type_stop = ')';
|
|
} else {
|
|
header_type_name = "dictionary";
|
|
hf = hf_alljoyn_mess_body_dictionary_entry;
|
|
type_stop = '}';
|
|
}
|
|
|
|
if(*signature == NULL || *signature_length < 1) {
|
|
col_add_fstr(pinfo->cinfo, COL_INFO, "BAD DATA: A %s argument needs a signature.", header_type_name);
|
|
return tvb_reported_length(tvb);
|
|
}
|
|
|
|
/* This length (4) will be updated later with the length of the entire struct. */
|
|
item = proto_tree_add_item(field_tree, hf, tvb, offset, 4, encoding);
|
|
append_struct_signature(item, *signature, *signature_length, type_stop);
|
|
tree = proto_item_add_subtree(item, ett_alljoyn_mess_body_parameters);
|
|
|
|
offset = pad_according_to_type(offset, tvb_reported_length(tvb), type_id);
|
|
|
|
(*signature)++; /* Advance past the '(' or '{'. */
|
|
|
|
/* *signature should never be NULL but just make sure to avoid potential issues. */
|
|
while(*signature && **signature != type_stop && tvb_reported_length_remaining(tvb, offset) > 0) {
|
|
offset = parse_arg(tvb,
|
|
pinfo,
|
|
header_item,
|
|
encoding,
|
|
offset,
|
|
tree,
|
|
is_reply_to,
|
|
**signature,
|
|
field_code,
|
|
signature,
|
|
signature_length);
|
|
}
|
|
|
|
proto_item_set_end(item, tvb, offset);
|
|
}
|
|
break;
|
|
|
|
default:
|
|
header_type_name = "unexpected";
|
|
/* Just say we are done with this packet. */
|
|
offset = tvb_reported_length(tvb);
|
|
break;
|
|
}
|
|
|
|
if(*signature && ARG_ARRAY != type_id && HDR_INVALID == field_code) {
|
|
(*signature)++;
|
|
(*signature_length)--;
|
|
}
|
|
|
|
if(NULL != header_item && NULL != header_type_name) {
|
|
/* Using "%s" and the argument "header_type_name" because some compilers don't like
|
|
"header_type_name" by itself. */
|
|
proto_item_append_text(header_item, "%s", header_type_name);
|
|
}
|
|
|
|
/* Make sure we never return something longer than the buffer for an offset. */
|
|
if(offset > (gint)tvb_reported_length(tvb)) {
|
|
offset = (gint)tvb_reported_length(tvb);
|
|
}
|
|
|
|
return offset;
|
|
}
|
|
|
|
static void
|
|
alljoyn_typeid( gchar *result, guint32 type )
|
|
{
|
|
g_snprintf( result, ITEM_LABEL_LENGTH, "'%c' => ", type);
|
|
}
|
|
|
|
/* This is called by handle_message_header_fields() to handle a single
|
|
* message header field.
|
|
* @param tvb is the incoming network data buffer.
|
|
* @param pinfo contains information about the incoming packet which
|
|
* we update as we dissect the packet.
|
|
* @param header_item is the subtree that we connect data items to.
|
|
* @param encoding indicates big (ENC_BIG_ENDIAN) or little (ENC_LITTLE_ENDIAN)
|
|
* @param offset is the offset into tvb to get the field from.
|
|
* endianness.
|
|
* @param signature pointer to the signature of the parameters. This is a return
|
|
* value for the caller to pass to the function that parses the parameters.
|
|
* @param signature_length pointer to the length of the signature. This is a return
|
|
* value for the caller to pass to the function that parses the parameters.
|
|
* @return The new offset into the buffer after removing the field code and value.
|
|
* the message.
|
|
*/
|
|
static gint
|
|
handle_message_field(tvbuff_t *tvb,
|
|
packet_info *pinfo,
|
|
proto_item *header_tree,
|
|
guint encoding,
|
|
gint offset,
|
|
guint8 **signature,
|
|
guint8 *signature_length)
|
|
{
|
|
proto_tree *field_tree;
|
|
proto_item *item, *field_item;
|
|
guint8 field_code;
|
|
guint8 type_id;
|
|
gboolean is_reply_to = FALSE;
|
|
|
|
field_code = tvb_get_guint8(tvb, offset);
|
|
|
|
if(HDR_REPLY_SERIAL == field_code) {
|
|
is_reply_to = TRUE;
|
|
}
|
|
|
|
field_item = proto_tree_add_item(header_tree, hf_alljoyn_mess_header_field, tvb, offset, 1, ENC_NA);
|
|
field_tree = proto_item_add_subtree(field_item, ett_alljoyn_mess_header_field);
|
|
|
|
proto_tree_add_item(field_tree, hf_alljoyn_mess_body_header_fieldcode, tvb, offset, 1, ENC_NA);
|
|
offset += 1;
|
|
|
|
/* We expect a byte of 0x01 here. */
|
|
handle_message_header_expected_byte(tvb, offset, field_tree, 0x01);
|
|
offset += 1;
|
|
|
|
item = proto_tree_add_item(field_tree, hf_alljoyn_mess_body_header_typeid, tvb, offset, 1, ENC_NA);
|
|
type_id = tvb_get_guint8(tvb, offset);
|
|
offset += 1;
|
|
|
|
/* We expect a byte of 0x00 here. */
|
|
handle_message_header_expected_byte(tvb, offset, field_tree, 0x00);
|
|
offset += 1;
|
|
|
|
offset = parse_arg(tvb,
|
|
pinfo,
|
|
item,
|
|
encoding,
|
|
offset,
|
|
field_tree,
|
|
is_reply_to,
|
|
type_id,
|
|
field_code,
|
|
signature,
|
|
signature_length);
|
|
|
|
offset = ROUND_TO_8BYTE(offset);
|
|
|
|
if(offset < 0 || offset > (gint)tvb_reported_length(tvb)) {
|
|
offset = (gint)tvb_reported_length(tvb);
|
|
}
|
|
|
|
proto_item_set_end(field_tree, tvb, offset);
|
|
|
|
return offset;
|
|
}
|
|
|
|
/* This is called by handle_message() to handle the message body.
|
|
* @param tvb is the incoming network data buffer.
|
|
* @param pinfo contains information about the incoming packet which
|
|
* we update as we dissect the packet.
|
|
* @param header_tree is the subtree that we connect data items to.
|
|
* @param encoding indicates big (ENC_BIG_ENDIAN) or little (ENC_LITTLE_ENDIAN)
|
|
* @param offset contains the offset into tvb for the start of the header fields.
|
|
* @param header_length contains the length of the message fields.
|
|
* @param signature_length contains the signature field length.
|
|
*/
|
|
static guint8 *
|
|
handle_message_header_fields(tvbuff_t *tvb,
|
|
packet_info *pinfo,
|
|
proto_item *header_tree,
|
|
guint encoding,
|
|
gint offset,
|
|
guint32 header_length,
|
|
guint8 *signature_length)
|
|
{
|
|
gint end_of_header;
|
|
proto_item *item;
|
|
proto_tree *tree;
|
|
guint8 *signature = NULL;
|
|
|
|
item = proto_tree_add_item(header_tree, hf_alljoyn_mess_header_fields, tvb, offset, header_length, ENC_NA);
|
|
tree = proto_item_add_subtree(item, ett_alljoyn_mess_header);
|
|
|
|
end_of_header = offset + header_length;
|
|
|
|
while(offset < end_of_header) {
|
|
offset = handle_message_field(tvb, pinfo, tree, encoding, offset, &signature, signature_length);
|
|
}
|
|
|
|
return signature;
|
|
}
|
|
|
|
/* This is called by handle_message() to handle the message body.
|
|
* @param tvb is the incoming network data buffer.
|
|
* @param header_tree is the subtree that we connect data items to.
|
|
* @param encoding indicates big (ENC_BIG_ENDIAN) or little (ENC_LITTLE_ENDIAN)
|
|
* @param offset contains the offset into tvb for the start of the parameters.
|
|
* @param body_length contains the length of the body parameters.
|
|
* @param signature the signature of the parameters.
|
|
* @param signature_length contains the signature field length.
|
|
*/
|
|
static gint
|
|
handle_message_body_parameters(tvbuff_t *tvb,
|
|
packet_info *pinfo,
|
|
proto_tree *header_tree,
|
|
guint encoding,
|
|
gint offset,
|
|
gint32 body_length,
|
|
guint8 *signature,
|
|
guint8 signature_length)
|
|
{
|
|
gint packet_length, end_of_body;
|
|
proto_tree *tree;
|
|
proto_item *item;
|
|
|
|
packet_length = tvb_reported_length(tvb);
|
|
|
|
/* Add a subtree/row for the message body parameters. */
|
|
item = proto_tree_add_item(header_tree, hf_alljoyn_mess_body_parameters, tvb, offset, body_length, ENC_NA);
|
|
tree = proto_item_add_subtree(item, ett_alljoyn_mess_body_parameters);
|
|
|
|
end_of_body = offset + body_length;
|
|
|
|
if(end_of_body > packet_length) {
|
|
end_of_body = packet_length;
|
|
}
|
|
|
|
while(offset < end_of_body && *signature) {
|
|
offset = parse_arg(tvb,
|
|
pinfo,
|
|
NULL,
|
|
encoding,
|
|
offset,
|
|
tree, /* Add the args to the Parameters tree. */
|
|
FALSE,
|
|
*signature,
|
|
HDR_INVALID,
|
|
&signature,
|
|
&signature_length);
|
|
}
|
|
|
|
return offset;
|
|
}
|
|
|
|
#define MESSAGE_HEADER_LENGTH 16
|
|
#define TYPE_OFFSET 1
|
|
#define FLAGS_OFFSET 2
|
|
#define MAJORVERSION_OFFSET 3
|
|
#define BODY_LENGTH_OFFSET 4
|
|
#define SERIAL_OFFSET 8
|
|
#define HEADER_LENGTH_OFFSET 12
|
|
|
|
/* This is called by dissect_AllJoyn_message() to handle the actual message.
|
|
* If it was a message with valid header and optional body then return TRUE.
|
|
* If not a valid message return false.
|
|
* @param tvb is the incoming network data buffer.
|
|
* @param pinfo contains information about the incoming packet which
|
|
* @param offset is the offset into the packet to start processing.
|
|
* @param message_tree is the subtree that any connect data items should be added to.
|
|
* @returns the offset into the packet that has successfully been handled or
|
|
* the input offset value if it was not a message header body..
|
|
*/
|
|
static gint
|
|
handle_message_header_body(tvbuff_t *tvb,
|
|
packet_info *pinfo,
|
|
gint offset,
|
|
proto_item *message_tree)
|
|
{
|
|
gint return_value;
|
|
gint remaining_packet_length;
|
|
guint8 *signature;
|
|
guint8 signature_length = 0;
|
|
proto_tree *header_tree, *flag_tree;
|
|
proto_item *header_item, *flag_item;
|
|
guint encoding;
|
|
gint header_length = 0, body_length = 0;
|
|
|
|
return_value = offset;
|
|
encoding = get_message_header_endianness(tvb, offset);
|
|
|
|
remaining_packet_length = tvb_reported_length_remaining(tvb, offset);
|
|
|
|
if(remaining_packet_length < MESSAGE_HEADER_LENGTH || remaining_packet_length > MAX_PACKET_LEN) {
|
|
col_add_fstr(pinfo->cinfo, COL_INFO, "BAD DATA: Remaining packet length is %u. Expected >= %d && <= %d",
|
|
remaining_packet_length, MESSAGE_HEADER_LENGTH, MAX_PACKET_LEN);
|
|
return tvb_reported_length(tvb); /* We are done with everything in this packet don't try anymore. */
|
|
}
|
|
|
|
header_length = get_uint32(tvb, offset + HEADER_LENGTH_OFFSET, encoding);
|
|
body_length = get_uint32(tvb, offset + BODY_LENGTH_OFFSET, encoding);
|
|
|
|
if(ROUND_TO_8BYTE(header_length) + body_length + MESSAGE_HEADER_LENGTH > remaining_packet_length) {
|
|
if(pinfo->can_desegment) {
|
|
/* pinfo->desegment_offset is set by the caller. */
|
|
pinfo->desegment_len = DESEGMENT_ONE_MORE_SEGMENT;
|
|
|
|
/*
|
|
* Return 0, which means "I didn't dissect anything because I don't have enough
|
|
* data - we need to desegment".
|
|
*/
|
|
return_value = 0;
|
|
}
|
|
|
|
return return_value;
|
|
}
|
|
|
|
/* Add a subtree/row for the header. */
|
|
header_item = proto_tree_add_item(message_tree, hf_alljoyn_mess_header, tvb, offset, MESSAGE_HEADER_LENGTH, ENC_NA);
|
|
header_tree = proto_item_add_subtree(header_item, ett_alljoyn_header);
|
|
|
|
proto_tree_add_item(header_tree, hf_alljoyn_mess_header_endian, tvb, offset + ENDIANNESS_OFFSET, 1, ENC_NA);
|
|
proto_tree_add_item(header_tree, hf_alljoyn_mess_header_type, tvb, offset + TYPE_OFFSET, 1, ENC_NA);
|
|
|
|
/* The flags byte. */
|
|
flag_item = proto_tree_add_item(header_tree, hf_alljoyn_mess_header_flags, tvb, offset + FLAGS_OFFSET, 1, ENC_NA);
|
|
flag_tree = proto_item_add_subtree(flag_item, ett_alljoyn_header_flags);
|
|
|
|
/* Now the individual bits. */
|
|
proto_tree_add_item(flag_tree, hf_alljoyn_mess_header_flags_encrypted, tvb, offset + FLAGS_OFFSET, 1, ENC_NA);
|
|
proto_tree_add_item(flag_tree, hf_alljoyn_mess_header_flags_compressed, tvb, offset + FLAGS_OFFSET, 1, ENC_NA);
|
|
proto_tree_add_item(flag_tree, hf_alljoyn_mess_header_flags_global_broadcast, tvb, offset + FLAGS_OFFSET, 1, ENC_NA);
|
|
proto_tree_add_item(flag_tree, hf_alljoyn_mess_header_flags_sessionless, tvb, offset + FLAGS_OFFSET, 1, ENC_NA);
|
|
proto_tree_add_item(flag_tree, hf_alljoyn_mess_header_flags_allow_remote_msg, tvb, offset + FLAGS_OFFSET, 1, ENC_NA);
|
|
proto_tree_add_item(flag_tree, hf_alljoyn_mess_header_flags_no_auto_start, tvb, offset + FLAGS_OFFSET, 1, ENC_NA);
|
|
proto_tree_add_item(flag_tree, hf_alljoyn_mess_header_flags_no_reply, tvb, offset + FLAGS_OFFSET, 1, ENC_NA);
|
|
|
|
proto_tree_add_item(header_tree, hf_alljoyn_mess_header_majorversion, tvb, offset + MAJORVERSION_OFFSET, 1, ENC_NA);
|
|
proto_tree_add_item(header_tree, hf_alljoyn_mess_header_body_length, tvb, offset + BODY_LENGTH_OFFSET, 4, encoding);
|
|
|
|
proto_tree_add_item(header_tree, hf_alljoyn_mess_header_serial, tvb, offset + SERIAL_OFFSET, 4, encoding);
|
|
col_add_fstr(pinfo->cinfo, COL_INFO, "Message %010u: '%s'", get_uint32(tvb, offset + SERIAL_OFFSET, encoding),
|
|
val_to_str_const(tvb_get_guint8(tvb, offset + TYPE_OFFSET), message_header_encoding_vals, "Unexpected message type"));
|
|
|
|
proto_tree_add_item(header_tree, hf_alljoyn_mess_header_header_length, tvb, offset + HEADER_LENGTH_OFFSET, 4, encoding);
|
|
|
|
offset = ROUND_TO_8BYTE(offset + MESSAGE_HEADER_LENGTH);
|
|
|
|
signature = handle_message_header_fields(tvb, pinfo, message_tree, encoding,
|
|
offset, header_length, &signature_length);
|
|
offset += ROUND_TO_8BYTE(header_length);
|
|
|
|
if(body_length > 0 && signature != NULL && signature_length > 0) {
|
|
return_value = handle_message_body_parameters(tvb,
|
|
pinfo,
|
|
message_tree,
|
|
encoding,
|
|
offset,
|
|
body_length,
|
|
signature,
|
|
signature_length);
|
|
} else {
|
|
return_value = offset;
|
|
}
|
|
|
|
return return_value;
|
|
}
|
|
|
|
static gboolean
|
|
protocol_is_ours(tvbuff_t *tvb)
|
|
{
|
|
int length = tvb_captured_length(tvb);
|
|
|
|
if(length < 1)
|
|
return FALSE;
|
|
|
|
/* initial byte for a connect message. */
|
|
if(tvb_get_guint8(tvb, 0) == 0)
|
|
return TRUE;
|
|
|
|
if(find_sasl_command(tvb, 0) != NULL)
|
|
return TRUE;
|
|
|
|
if(get_message_header_endianness(tvb, 0) == ENC_ALLJOYN_BAD_ENCODING)
|
|
return FALSE;
|
|
|
|
if((length < 2) || (try_val_to_str(tvb_get_guint8(tvb, 1), message_header_encoding_vals) == NULL))
|
|
return FALSE;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/* This is called by Wireshark for packet types that are registered
|
|
* in the proto_reg_handoff_AllJoyn() function. This function handles
|
|
* the packets for the traffic on port 9955.
|
|
* @param tvb is the incoming network data buffer.
|
|
* @param pinfo contains information about the incoming packet which
|
|
* we update as we dissect the packet.
|
|
* @param tree is the tree data items should be added to.
|
|
* @return The offset into the buffer we have dissected (which should normally
|
|
* be the packet length), 0 if not AllJoyn message protocol, or 0 (with
|
|
* pinfo->desegment_len == DESEGMENT_ONE_MORE_SEGMENT set) if another segment
|
|
* is needed, or the packet length if "really bad" parameters come in.
|
|
*/
|
|
static gint
|
|
dissect_AllJoyn_message(tvbuff_t *tvb,
|
|
packet_info *pinfo,
|
|
proto_tree *tree,
|
|
void *data _U_)
|
|
{
|
|
gint offset = 0;
|
|
proto_item *message_item;
|
|
proto_tree *message_tree;
|
|
gint last_offset = -1;
|
|
gint packet_length;
|
|
|
|
if(!protocol_is_ours(tvb)) {
|
|
return 0;
|
|
}
|
|
|
|
packet_length = tvb_reported_length(tvb);
|
|
|
|
col_clear(pinfo->cinfo, COL_INFO);
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL, "ALLJOYN");
|
|
|
|
/* Add a subtree covering the remainder of the packet */
|
|
message_item = proto_tree_add_item(tree, proto_AllJoyn_mess, tvb, 0, -1, ENC_NA);
|
|
message_tree = proto_item_add_subtree(message_item, ett_alljoyn_mess);
|
|
|
|
/* Continue as long as we are making progress and we haven't finished with the packet. */
|
|
while(offset < packet_length && offset > last_offset) {
|
|
last_offset = offset;
|
|
offset = handle_message_connect(tvb, pinfo, offset, message_tree);
|
|
|
|
if(offset >= packet_length) {
|
|
break;
|
|
}
|
|
|
|
offset = handle_message_sasl(tvb, pinfo, offset, message_tree);
|
|
|
|
if(offset >= packet_length) {
|
|
break;
|
|
}
|
|
|
|
offset = handle_message_header_body(tvb, pinfo, offset, message_tree);
|
|
}
|
|
|
|
if(0 == offset && pinfo->desegment_len == DESEGMENT_ONE_MORE_SEGMENT) {
|
|
if(last_offset > 0) {
|
|
pinfo->desegment_offset = last_offset;
|
|
} else {
|
|
pinfo->desegment_offset = 0;
|
|
}
|
|
}
|
|
|
|
return offset;
|
|
}
|
|
|
|
static void
|
|
ns_parse_questions(tvbuff_t *tvb, gint* offset, proto_tree* alljoyn_tree, guint8 questions, guint message_version)
|
|
{
|
|
while(questions--) {
|
|
proto_item *alljoyn_questions_ti;
|
|
proto_tree *alljoyn_questions_tree;
|
|
gint count;
|
|
|
|
alljoyn_questions_ti = proto_tree_add_item(alljoyn_tree, hf_alljoyn_ns_whohas, tvb, *offset, 2, ENC_NA); /* "Who-Has Message" */
|
|
alljoyn_questions_tree = proto_item_add_subtree(alljoyn_questions_ti, ett_alljoyn_whohas);
|
|
|
|
if(0 == message_version) {
|
|
proto_tree_add_item(alljoyn_questions_tree, hf_alljoyn_ns_whohas_t_flag, tvb, *offset, 1, ENC_NA);
|
|
proto_tree_add_item(alljoyn_questions_tree, hf_alljoyn_ns_whohas_u_flag, tvb, *offset, 1, ENC_NA);
|
|
proto_tree_add_item(alljoyn_questions_tree, hf_alljoyn_ns_whohas_s_flag, tvb, *offset, 1, ENC_NA);
|
|
proto_tree_add_item(alljoyn_questions_tree, hf_alljoyn_ns_whohas_f_flag, tvb, *offset, 1, ENC_NA);
|
|
}
|
|
|
|
(*offset) += 1;
|
|
|
|
proto_tree_add_item(alljoyn_questions_tree, hf_alljoyn_ns_whohas_count, tvb, *offset, 1, ENC_NA);
|
|
count = tvb_get_guint8(tvb, *offset);
|
|
(*offset) += 1;
|
|
|
|
while(count--) {
|
|
proto_item *alljoyn_bus_name_ti;
|
|
proto_tree *alljoyn_bus_name_tree;
|
|
gint bus_name_size = 0;
|
|
|
|
bus_name_size = tvb_get_guint8(tvb, *offset);
|
|
|
|
alljoyn_bus_name_ti = proto_tree_add_item(alljoyn_questions_tree, hf_alljoyn_string, tvb,
|
|
*offset, 1 + bus_name_size, ENC_NA);
|
|
alljoyn_bus_name_tree = proto_item_add_subtree(alljoyn_bus_name_ti, ett_alljoyn_ns_string);
|
|
|
|
proto_tree_add_item(alljoyn_bus_name_tree, hf_alljoyn_string_size_8bit, tvb, *offset, 1, ENC_NA);
|
|
(*offset) += 1;
|
|
|
|
proto_tree_add_item(alljoyn_bus_name_tree, hf_alljoyn_string_data, tvb, *offset, bus_name_size, ENC_ASCII|ENC_NA);
|
|
(*offset) += bus_name_size;
|
|
}
|
|
|
|
}
|
|
}
|
|
|
|
/* The version 0 protocol looks like this:
|
|
* Byte 0:
|
|
* Bit 0 (ISAT_F): If '1' indicates the daemon is listening on an IPv4
|
|
* address and that an IPv4 address is present in the message. If '0'
|
|
* there is no IPv4 address present.
|
|
*
|
|
* Bit 1 (ISAT_S): If '1' the responding daemon is listening on an IPv6
|
|
* address and that an IPv6 address is present in the message. If '0'
|
|
* there is no IPv6 address present.
|
|
*
|
|
* Bit 2 (ISAT_U): If '1' the daemon is listening on UDP.
|
|
*
|
|
* Bit 3 (ISAT_T): If '1' the daemon is listening on TCP.
|
|
*
|
|
* Bit 4 (ISAT_C): If '1' the list of StringData records is a complete
|
|
* list of all well-known names exported by the daemon.
|
|
*
|
|
* Bit 5 (ISAT_G): If '1' a variable length daemon GUID string is present.
|
|
*
|
|
* Bits 6-7: The message type of the IS-AT message. Defined to be '01' (1).
|
|
*
|
|
* Byte 1 (Count): The number of StringData items. Each StringData item
|
|
* describes one well-known bus name supported by the daemon.
|
|
*
|
|
* Bytes 2-3 (Port): The port on which the daemon is listening.
|
|
*
|
|
* If the ISAT_F bit is set then the next four bytes is the IPv4 address on
|
|
* which the daemon is listening.
|
|
*
|
|
* If the ISAT_S bit is set then the next 16 bytes is the IPv6 address on
|
|
* which the daemon is listening.
|
|
*
|
|
* If the ISAT_G bit is set then the next data is daemon GUID StringData.
|
|
*
|
|
* The next data is a variable number of StringData records.
|
|
*/
|
|
static void
|
|
ns_parse_answers_v0(tvbuff_t *tvb, gint* offset, proto_tree* alljoyn_tree, guint8 answers)
|
|
{
|
|
while(answers--) {
|
|
proto_item *alljoyn_answers_ti;
|
|
proto_tree *alljoyn_answers_tree;
|
|
gint flags;
|
|
gint count;
|
|
|
|
alljoyn_answers_ti = proto_tree_add_item(alljoyn_tree, hf_alljoyn_answer, tvb, *offset, 2, ENC_NA);
|
|
alljoyn_answers_tree = proto_item_add_subtree(alljoyn_answers_ti, ett_alljoyn_ns_answers);
|
|
|
|
proto_tree_add_item(alljoyn_answers_tree, hf_alljoyn_ns_isat_g_flag, tvb, *offset, 1, ENC_NA);
|
|
proto_tree_add_item(alljoyn_answers_tree, hf_alljoyn_ns_isat_c_flag, tvb, *offset, 1, ENC_NA);
|
|
proto_tree_add_item(alljoyn_answers_tree, hf_alljoyn_ns_isat_t_flag, tvb, *offset, 1, ENC_NA);
|
|
proto_tree_add_item(alljoyn_answers_tree, hf_alljoyn_ns_isat_u_flag, tvb, *offset, 1, ENC_NA);
|
|
proto_tree_add_item(alljoyn_answers_tree, hf_alljoyn_ns_isat_s_flag, tvb, *offset, 1, ENC_NA);
|
|
proto_tree_add_item(alljoyn_answers_tree, hf_alljoyn_ns_isat_f_flag, tvb, *offset, 1, ENC_NA);
|
|
flags = tvb_get_guint8(tvb, *offset);
|
|
(*offset) += 1;
|
|
|
|
proto_tree_add_item(alljoyn_answers_tree, hf_alljoyn_ns_isat_count, tvb, *offset, 1, ENC_NA);
|
|
count = tvb_get_guint8(tvb, *offset);
|
|
(*offset) += 1;
|
|
|
|
proto_tree_add_item(alljoyn_answers_tree, hf_alljoyn_ns_isat_port, tvb, *offset, 2, ENC_NA);
|
|
(*offset) += 2;
|
|
|
|
if(flags & ISAT_S) {
|
|
proto_tree_add_item(alljoyn_answers_tree, hf_alljoyn_ns_isat_ipv6, tvb, *offset, 16, ENC_NA);
|
|
(*offset) += 16;
|
|
}
|
|
|
|
if(flags & ISAT_F) {
|
|
proto_tree_add_item(alljoyn_answers_tree, hf_alljoyn_ns_isat_ipv4, tvb, *offset, 4, ENC_NA);
|
|
(*offset) += 4;
|
|
}
|
|
|
|
if(flags & ISAT_G) {
|
|
proto_item *alljoyn_string_ti;
|
|
proto_tree *alljoyn_string_tree;
|
|
gint guid_size = 0;
|
|
|
|
guid_size = tvb_get_guint8(tvb, *offset);
|
|
|
|
alljoyn_string_ti = proto_tree_add_item(alljoyn_answers_tree, hf_alljoyn_isat_guid_string, tvb,
|
|
*offset, 1 + guid_size, ENC_NA);
|
|
alljoyn_string_tree = proto_item_add_subtree(alljoyn_string_ti, ett_alljoyn_ns_guid_string);
|
|
|
|
proto_tree_add_item(alljoyn_string_tree, hf_alljoyn_string_size_8bit, tvb, *offset, 1, ENC_NA);
|
|
(*offset) += 1;
|
|
|
|
proto_tree_add_item(alljoyn_string_tree, hf_alljoyn_string_data, tvb, *offset, guid_size, ENC_ASCII|ENC_NA);
|
|
(*offset) += guid_size;
|
|
}
|
|
|
|
while(count--) {
|
|
proto_item *alljoyn_entry_ti;
|
|
proto_tree *alljoyn_entry_tree;
|
|
proto_item *alljoyn_bus_name_ti;
|
|
proto_tree *alljoyn_bus_name_tree;
|
|
gint bus_name_size = tvb_get_guint8(tvb, *offset);
|
|
|
|
alljoyn_entry_ti = proto_tree_add_item(alljoyn_answers_tree, hf_alljoyn_isat_entry, tvb,
|
|
*offset, 1 + bus_name_size, ENC_NA);
|
|
alljoyn_entry_tree = proto_item_add_subtree(alljoyn_entry_ti, ett_alljoyn_ns_isat_entry);
|
|
|
|
alljoyn_bus_name_ti = proto_tree_add_item(alljoyn_entry_tree, hf_alljoyn_string, tvb, *offset,
|
|
1 + bus_name_size, ENC_NA);
|
|
alljoyn_bus_name_tree = proto_item_add_subtree(alljoyn_bus_name_ti, ett_alljoyn_string);
|
|
|
|
proto_tree_add_item(alljoyn_bus_name_tree, hf_alljoyn_string_size_8bit, tvb, *offset, 1, ENC_NA);
|
|
(*offset) += 1;
|
|
|
|
proto_tree_add_item(alljoyn_bus_name_tree, hf_alljoyn_string_data, tvb, *offset, bus_name_size, ENC_ASCII|ENC_NA);
|
|
(*offset) += bus_name_size;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* The version 1 protocol looks like this:
|
|
* Byte 0:
|
|
* Bit 0 (ISAT_U6): If '1' then the IPv6 endpoint of an unreliable method
|
|
* (UDP) transport (IP address and port) is present.
|
|
*
|
|
* Bit 1 (ISAT_R6): If '1' the the IPv6 endpoint of a reliable method
|
|
* (TCP) transport (IP address and port) is present.
|
|
*
|
|
* Bit 2 (ISAT_U4): If '1' then the IPv4 endpoint of an unreliable method
|
|
* (UDP) transport (IP address and port) is present.
|
|
*
|
|
* Bit 3 (ISAT_R4): If '1' then the IPv4 endpoint of a reliable method
|
|
* (TCP) transport (IP address and port) is present.
|
|
*
|
|
* Bit 4 (ISAT_C): If '1' the list of StringData records is a complete
|
|
* list of all well-known names exported by the daemon.
|
|
*
|
|
* Bit 5 (ISAT_G): If '1' a variable length daemon GUID string is present.
|
|
*
|
|
* Bits 6-7: The message type of the IS-AT message. Defined to be '01' (1).
|
|
*
|
|
* Byte 1 (Count): The number of StringData items. Each StringData item
|
|
* describes one well-known bus name supported by the daemon.
|
|
*
|
|
* Bytes 2-3 (TransportMask): The bit mask of transport identifiers that
|
|
* indicates which AllJoyn transport is making the advertisement.
|
|
*
|
|
* If the ISAT_R4 bit is set then the next four bytes is the IPv4 address on
|
|
* which the daemon is listening.
|
|
*
|
|
* If the ISAT_R4 bit is set then the next two bytes is the IPv4 port on
|
|
* which the daemon is listening.
|
|
*
|
|
* If the ISAT_R6 bit is set then the next 16 bytes is the IPv6 address on
|
|
* which the daemon is listening for TCP traffic.
|
|
*
|
|
* If the ISAT_R6 bit is set then the next two bytes is the IPv6 port on
|
|
* which the daemon is listening for TCP traffic.
|
|
*
|
|
* If the ISAT_U6 bit is set then the next 16 bytes is the IPv6 address on
|
|
* which the daemon is listening for UDP traffic.
|
|
*
|
|
* If the ISAT_U6 bit is set then the next two bytes is the IPv6 port on
|
|
* which the daemon is listening for UDP traffic.
|
|
*
|
|
* If the ISAT_G bit is set then the next data is daemon GUID StringData.
|
|
*
|
|
* The next data is a variable number of StringData records.
|
|
*/
|
|
static void
|
|
ns_parse_answers_v1(tvbuff_t *tvb, gint* offset, proto_tree* alljoyn_tree, guint8 answers)
|
|
{
|
|
while(answers--) {
|
|
proto_item *alljoyn_answers_ti;
|
|
proto_tree *alljoyn_answers_tree;
|
|
gint flags;
|
|
gint count;
|
|
|
|
alljoyn_answers_ti = proto_tree_add_item(alljoyn_tree, hf_alljoyn_answer, tvb, *offset, 2, ENC_NA);
|
|
alljoyn_answers_tree = proto_item_add_subtree(alljoyn_answers_ti, ett_alljoyn_ns_answers);
|
|
|
|
proto_tree_add_item(alljoyn_answers_tree, hf_alljoyn_ns_isat_g_flag, tvb, *offset, 1, ENC_NA);
|
|
proto_tree_add_item(alljoyn_answers_tree, hf_alljoyn_ns_isat_c_flag, tvb, *offset, 1, ENC_NA);
|
|
|
|
proto_tree_add_item(alljoyn_answers_tree, hf_alljoyn_ns_isat_r4_flag, tvb, *offset, 1, ENC_NA);
|
|
proto_tree_add_item(alljoyn_answers_tree, hf_alljoyn_ns_isat_u4_flag, tvb, *offset, 1, ENC_NA);
|
|
|
|
proto_tree_add_item(alljoyn_answers_tree, hf_alljoyn_ns_isat_r6_flag, tvb, *offset, 1, ENC_NA);
|
|
proto_tree_add_item(alljoyn_answers_tree, hf_alljoyn_ns_isat_u6_flag, tvb, *offset, 1, ENC_NA);
|
|
|
|
flags = tvb_get_guint8(tvb, *offset);
|
|
(*offset) += 1;
|
|
|
|
proto_tree_add_item(alljoyn_answers_tree, hf_alljoyn_ns_isat_count, tvb, *offset, 1, ENC_NA);
|
|
count = tvb_get_guint8(tvb, *offset);
|
|
(*offset) += 1;
|
|
|
|
/* The entire transport mask. */
|
|
proto_tree_add_item(alljoyn_answers_tree, hf_alljoyn_ns_isat_transport_mask, tvb, *offset, 2, ENC_NA);
|
|
|
|
/* The individual bits of the transport mask. */
|
|
proto_tree_add_item(alljoyn_answers_tree, hf_alljoyn_ns_isat_transport_mask_wfd, tvb, *offset, 2, ENC_NA);
|
|
proto_tree_add_item(alljoyn_answers_tree, hf_alljoyn_ns_isat_transport_mask_ice, tvb, *offset, 2, ENC_NA);
|
|
proto_tree_add_item(alljoyn_answers_tree, hf_alljoyn_ns_isat_transport_mask_lan, tvb, *offset, 2, ENC_NA);
|
|
proto_tree_add_item(alljoyn_answers_tree, hf_alljoyn_ns_isat_transport_mask_wwan, tvb, *offset, 2, ENC_NA);
|
|
proto_tree_add_item(alljoyn_answers_tree, hf_alljoyn_ns_isat_transport_mask_tcp, tvb, *offset, 2, ENC_NA);
|
|
proto_tree_add_item(alljoyn_answers_tree, hf_alljoyn_ns_isat_transport_mask_bluetooth, tvb, *offset, 2, ENC_NA);
|
|
proto_tree_add_item(alljoyn_answers_tree, hf_alljoyn_ns_isat_transport_mask_local, tvb, *offset, 2, ENC_NA);
|
|
|
|
(*offset) += 2;
|
|
|
|
if(flags & ISAT_R4) {
|
|
proto_tree_add_item(alljoyn_answers_tree, hf_alljoyn_ns_isat_ipv4, tvb, *offset, 4, ENC_NA);
|
|
(*offset) += 4;
|
|
|
|
proto_tree_add_item(alljoyn_answers_tree, hf_alljoyn_ns_isat_port, tvb, *offset, 2, ENC_NA);
|
|
(*offset) += 2;
|
|
}
|
|
|
|
if(flags & ISAT_U4) {
|
|
proto_tree_add_item(alljoyn_answers_tree, hf_alljoyn_ns_isat_ipv4, tvb, *offset, 4, ENC_NA);
|
|
(*offset) += 4;
|
|
|
|
proto_tree_add_item(alljoyn_answers_tree, hf_alljoyn_ns_isat_port, tvb, *offset, 2, ENC_NA);
|
|
(*offset) += 2;
|
|
}
|
|
|
|
if(flags & ISAT_R6) {
|
|
proto_tree_add_item(alljoyn_answers_tree, hf_alljoyn_ns_isat_ipv6, tvb, *offset, 16, ENC_NA);
|
|
(*offset) += 16;
|
|
|
|
proto_tree_add_item(alljoyn_answers_tree, hf_alljoyn_ns_isat_port, tvb, *offset, 2, ENC_NA);
|
|
(*offset) += 2;
|
|
}
|
|
|
|
if(flags & ISAT_U6) {
|
|
proto_tree_add_item(alljoyn_answers_tree, hf_alljoyn_ns_isat_ipv6, tvb, *offset, 16, ENC_NA);
|
|
(*offset) += 16;
|
|
|
|
proto_tree_add_item(alljoyn_answers_tree, hf_alljoyn_ns_isat_port, tvb, *offset, 2, ENC_NA);
|
|
(*offset) += 2;
|
|
}
|
|
|
|
if(flags & ISAT_G) {
|
|
proto_item *alljoyn_string_ti;
|
|
proto_tree *alljoyn_string_tree;
|
|
gint guid_size;
|
|
|
|
guid_size = tvb_get_guint8(tvb, *offset);
|
|
|
|
alljoyn_string_ti = proto_tree_add_item(alljoyn_answers_tree, hf_alljoyn_isat_guid_string, tvb,
|
|
*offset, 1 + guid_size, ENC_NA);
|
|
alljoyn_string_tree = proto_item_add_subtree(alljoyn_string_ti, ett_alljoyn_ns_guid_string);
|
|
|
|
proto_tree_add_item(alljoyn_string_tree, hf_alljoyn_string_size_8bit, tvb, *offset, 1, ENC_NA);
|
|
(*offset) += 1;
|
|
|
|
proto_tree_add_item(alljoyn_string_tree, hf_alljoyn_string_data, tvb, *offset, guid_size, ENC_ASCII|ENC_NA);
|
|
(*offset) += guid_size;
|
|
}
|
|
|
|
/* The string data records. */
|
|
while(count--) {
|
|
proto_item *alljoyn_entry_ti;
|
|
proto_tree *alljoyn_entry_tree;
|
|
|
|
proto_tree *alljoyn_bus_name_ti;
|
|
proto_tree *alljoyn_bus_name_tree;
|
|
gint bus_name_size = tvb_get_guint8(tvb, *offset);
|
|
|
|
alljoyn_entry_ti = proto_tree_add_item(alljoyn_answers_tree, hf_alljoyn_isat_entry, tvb,
|
|
*offset, 1 + bus_name_size, ENC_NA);
|
|
alljoyn_entry_tree = proto_item_add_subtree(alljoyn_entry_ti, ett_alljoyn_isat_entry);
|
|
|
|
alljoyn_bus_name_ti = proto_tree_add_item(alljoyn_entry_tree, hf_alljoyn_string, tvb, *offset,
|
|
1 + bus_name_size, ENC_NA);
|
|
alljoyn_bus_name_tree = proto_item_add_subtree(alljoyn_bus_name_ti, ett_alljoyn_string);
|
|
|
|
proto_tree_add_item(alljoyn_bus_name_tree, hf_alljoyn_string_size_8bit, tvb, *offset, 1, ENC_NA);
|
|
(*offset) += 1;
|
|
|
|
proto_tree_add_item(alljoyn_bus_name_tree, hf_alljoyn_string_data, tvb, *offset, bus_name_size, ENC_ASCII|ENC_NA);
|
|
(*offset) += bus_name_size;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* This is called by Wireshark for packet types that are registered
|
|
in the proto_reg_handoff_AllJoyn() function. This function handles
|
|
the packets for the name server traffic.
|
|
* @param tvb is the incoming network data buffer.
|
|
* @param pinfo contains information about the incoming packet which
|
|
* we update as we dissect the packet.
|
|
* @param tree is the tree data items should be added to.
|
|
*/
|
|
static int
|
|
dissect_AllJoyn_name_server(tvbuff_t *tvb,
|
|
packet_info *pinfo,
|
|
proto_tree *tree,
|
|
void *data _U_)
|
|
{
|
|
proto_item *alljoyn_item, *header_item;
|
|
proto_tree *alljoyn_tree, *header_tree;
|
|
guint8 questions, answers;
|
|
guint8 version;
|
|
int offset = 0;
|
|
|
|
/* This is name service traffic. Mark it as such at the top level. */
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL, "ALLJOYN-NS");
|
|
col_clear(pinfo->cinfo, COL_INFO);
|
|
|
|
/* Add a subtree covering the remainder of the packet */
|
|
alljoyn_item = proto_tree_add_item(tree, proto_AllJoyn_ns, tvb, 0, -1, ENC_NA);
|
|
alljoyn_tree = proto_item_add_subtree(alljoyn_item, ett_alljoyn_ns);
|
|
|
|
/* Add the "header protocol" as a subtree from the AllJoyn Name Service Protocol. */
|
|
header_item = proto_tree_add_item(alljoyn_tree, hf_alljoyn_ns_header, tvb, offset, 4, ENC_NA);
|
|
header_tree = proto_item_add_subtree(header_item, ett_alljoyn_ns_header);
|
|
|
|
/* The the sender and message versions as fields for the header protocol. */
|
|
proto_tree_add_item(header_tree, hf_alljoyn_ns_sender_version, tvb, offset, 1, ENC_NA);
|
|
proto_tree_add_item(header_tree, hf_alljoyn_ns_message_version, tvb, offset, 1, ENC_NA);
|
|
version = tvb_get_guint8(tvb, offset) & 0xF;
|
|
offset += 1;
|
|
|
|
col_add_fstr(pinfo->cinfo, COL_INFO, "VERSION %u", version);
|
|
if(version > 1)
|
|
col_append_str(pinfo->cinfo, COL_INFO, " (UNSUPPORTED)");
|
|
|
|
proto_tree_add_item(header_tree, hf_alljoyn_ns_questions, tvb, offset, 1, ENC_NA);
|
|
questions = tvb_get_guint8(tvb, offset);
|
|
offset += 1;
|
|
|
|
proto_tree_add_item(header_tree, hf_alljoyn_ns_answers, tvb, offset, 1, ENC_NA);
|
|
answers = tvb_get_guint8(tvb, offset);
|
|
offset += 1;
|
|
|
|
if(answers > 0)
|
|
col_append_str(pinfo->cinfo, COL_INFO, " ISAT");
|
|
|
|
if(questions > 0)
|
|
col_append_str(pinfo->cinfo, COL_INFO, " WHOHAS");
|
|
|
|
proto_tree_add_item(header_tree, hf_alljoyn_ns_timer, tvb, offset, 1, ENC_NA);
|
|
offset += 1;
|
|
|
|
|
|
if(tree) { /* we are being asked for details */
|
|
ns_parse_questions(tvb, &offset, alljoyn_tree, questions, version);
|
|
|
|
switch(version) {
|
|
case 0:
|
|
ns_parse_answers_v0(tvb, &offset, alljoyn_tree, answers);
|
|
break;
|
|
case 1:
|
|
ns_parse_answers_v1(tvb, &offset, alljoyn_tree, answers);
|
|
break;
|
|
default:
|
|
/* XXX - expert info */
|
|
/* This case being unsupported is reported in the column info by
|
|
* the caller of this function. */
|
|
break;
|
|
}
|
|
}
|
|
|
|
return tvb_reported_length(tvb);
|
|
}
|
|
|
|
void
|
|
proto_register_AllJoyn(void)
|
|
{
|
|
/* A header field is something you can search/filter on.
|
|
*
|
|
* We create a structure to register our fields. It consists of an
|
|
* array of hf_register_info structures, each of which are of the format
|
|
* {&(field id), {name, abbrev, type, display, strings, bitmask, blurb, HFILL}}.
|
|
* The array below defines what elements we will be displaying. These
|
|
* declarations are simply a definition Wireshark uses to determine the data
|
|
* type, when we later dissect the packet.
|
|
*/
|
|
static hf_register_info hf[] = {
|
|
/******************
|
|
* Wireshark header fields for the name service protocol.
|
|
******************/
|
|
{&hf_alljoyn_ns_header,
|
|
{"Header", "alljoyn.header",
|
|
FT_PROTOCOL, BASE_NONE, NULL, 0x0,
|
|
NULL, HFILL}
|
|
},
|
|
{&hf_alljoyn_ns_sender_version,
|
|
{"Sender Version", "alljoyn.header.sendversion",
|
|
FT_UINT8, BASE_DEC, NULL, 0xF0,
|
|
NULL, HFILL}
|
|
},
|
|
{&hf_alljoyn_ns_message_version,
|
|
{"Message Version", "alljoyn.header.messageversion",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0F,
|
|
NULL, HFILL}
|
|
},
|
|
{&hf_alljoyn_ns_questions,
|
|
{"Questions", "alljoyn.header.questions",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL}
|
|
},
|
|
{&hf_alljoyn_ns_answers,
|
|
{"Answers", "alljoyn.header.answers",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL}
|
|
},
|
|
{&hf_alljoyn_ns_timer,
|
|
{"Timer", "alljoyn.header.timer",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL}
|
|
},
|
|
|
|
{&hf_alljoyn_ns_whohas,
|
|
{"Who-Has Message", "alljoyn.whohas",
|
|
FT_PROTOCOL, BASE_NONE, NULL, 0x0,
|
|
NULL, HFILL}
|
|
},
|
|
{&hf_alljoyn_ns_whohas_t_flag,
|
|
{"TCP", "alljoyn.whohas.T",
|
|
FT_BOOLEAN, 8, NULL, WHOHAS_T,
|
|
NULL, HFILL}
|
|
},
|
|
{&hf_alljoyn_ns_whohas_u_flag,
|
|
{"UDP", "alljoyn.whohas.U",
|
|
FT_BOOLEAN, 8, NULL, WHOHAS_U,
|
|
NULL, HFILL}
|
|
},
|
|
{&hf_alljoyn_ns_whohas_s_flag,
|
|
{"IPv6", "alljoyn.whohas.S",
|
|
FT_BOOLEAN, 8, NULL, WHOHAS_S,
|
|
NULL, HFILL}
|
|
},
|
|
{&hf_alljoyn_ns_whohas_f_flag,
|
|
{"IPv4", "alljoyn.whohas.F",
|
|
FT_BOOLEAN, 8, NULL, WHOHAS_F,
|
|
NULL, HFILL}
|
|
},
|
|
{&hf_alljoyn_ns_whohas_count,
|
|
{"Count", "alljoyn.whohas.count",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL}
|
|
},
|
|
|
|
{&hf_alljoyn_answer,
|
|
{"Is-At Message", "alljoyn.isat",
|
|
FT_PROTOCOL, BASE_NONE, NULL, 0x0,
|
|
NULL, HFILL}
|
|
},
|
|
{&hf_alljoyn_isat_entry,
|
|
{"Advertisement Entry", "alljoyn.isat_entry",
|
|
FT_PROTOCOL, BASE_NONE, NULL, 0x0,
|
|
NULL, HFILL}
|
|
},
|
|
{&hf_alljoyn_isat_guid_string,
|
|
{"GUID String", "alljoyn.isat_guid_string",
|
|
FT_PROTOCOL, BASE_NONE, NULL, 0x0,
|
|
NULL, HFILL}
|
|
},
|
|
|
|
/* Common to V0 and V1 IS-AT messages. */
|
|
{&hf_alljoyn_ns_isat_g_flag,
|
|
{"GUID", "alljoyn.isat.G",
|
|
FT_BOOLEAN, 8, NULL, ISAT_G,
|
|
NULL, HFILL}
|
|
},
|
|
{&hf_alljoyn_ns_isat_c_flag,
|
|
{"Complete", "alljoyn.isat.C",
|
|
FT_BOOLEAN, 8, NULL, ISAT_C,
|
|
NULL, HFILL}
|
|
},
|
|
{&hf_alljoyn_ns_isat_count,
|
|
{"Count", "alljoyn.isat.count",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL}
|
|
},
|
|
{&hf_alljoyn_ns_isat_ipv6,
|
|
{"IPv6 Address", "alljoyn.isat.ipv6",
|
|
FT_IPv6, BASE_NONE, NULL, 0x0,
|
|
NULL, HFILL}
|
|
},
|
|
{&hf_alljoyn_ns_isat_ipv4,
|
|
{"IPv4 Address", "alljoyn.isat.ipv4",
|
|
FT_IPv4, BASE_NONE, NULL, 0x0,
|
|
NULL, HFILL}
|
|
},
|
|
|
|
/* Version 0 IS-AT messages. */
|
|
{&hf_alljoyn_ns_isat_t_flag,
|
|
{"TCP", "alljoyn.isat.T",
|
|
FT_BOOLEAN, 8, NULL, ISAT_T,
|
|
NULL, HFILL}
|
|
},
|
|
{&hf_alljoyn_ns_isat_u_flag,
|
|
{"UDP", "alljoyn.isat.U",
|
|
FT_BOOLEAN, 8, NULL, ISAT_U,
|
|
NULL, HFILL}
|
|
},
|
|
{&hf_alljoyn_ns_isat_s_flag,
|
|
{"IPv6", "alljoyn.isat.S",
|
|
FT_BOOLEAN, 8, NULL, ISAT_S,
|
|
NULL, HFILL}
|
|
},
|
|
{&hf_alljoyn_ns_isat_f_flag,
|
|
{"IPv4", "alljoyn.isat.F",
|
|
FT_BOOLEAN, 8, NULL, ISAT_F,
|
|
NULL, HFILL}
|
|
},
|
|
{&hf_alljoyn_ns_isat_port,
|
|
{"Port", "alljoyn.isat.port",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL}
|
|
},
|
|
|
|
/* Version 1 IS-AT messages. */
|
|
{&hf_alljoyn_ns_isat_u6_flag,
|
|
{"IPv6 UDP", "alljoyn.isat.U6",
|
|
FT_BOOLEAN, 8, NULL, ISAT_U6,
|
|
NULL, HFILL}
|
|
},
|
|
{&hf_alljoyn_ns_isat_r6_flag,
|
|
{"IPv6 TCP", "alljoyn.isat.R6",
|
|
FT_BOOLEAN, 8, NULL, ISAT_R6,
|
|
NULL, HFILL}
|
|
},
|
|
{&hf_alljoyn_ns_isat_u4_flag,
|
|
{"IPv4 UDP", "alljoyn.isat.U4",
|
|
FT_BOOLEAN, 8, NULL, ISAT_U4,
|
|
NULL, HFILL}
|
|
},
|
|
{&hf_alljoyn_ns_isat_r4_flag,
|
|
{"IPv4 TCP", "alljoyn.isat.R4",
|
|
FT_BOOLEAN, 8, NULL, ISAT_R4,
|
|
NULL, HFILL}
|
|
},
|
|
|
|
{&hf_alljoyn_ns_isat_transport_mask,
|
|
{"Transport Mask", "alljoyn.isat.TransportMask",
|
|
FT_UINT8, BASE_HEX, NULL, 0x0,
|
|
NULL, HFILL}
|
|
},
|
|
|
|
{&hf_alljoyn_ns_isat_transport_mask_local,
|
|
{"Local Transport", "alljoyn.isat.TransportMask.Local",
|
|
FT_BOOLEAN, 16, NULL, TRANSPORT_LOCAL,
|
|
NULL, HFILL}
|
|
},
|
|
{&hf_alljoyn_ns_isat_transport_mask_bluetooth,
|
|
{"Bluetooth Transport", "alljoyn.isat.TransportMask.Bluetooth",
|
|
FT_BOOLEAN, 16, NULL, TRANSPORT_BLUETOOTH,
|
|
NULL, HFILL}
|
|
},
|
|
{&hf_alljoyn_ns_isat_transport_mask_tcp,
|
|
{"TCP Transport", "alljoyn.isat.TransportMask.TCP",
|
|
FT_BOOLEAN, 16, NULL, TRANSPORT_TCP,
|
|
NULL, HFILL}
|
|
},
|
|
{&hf_alljoyn_ns_isat_transport_mask_wwan,
|
|
{"Wirelesss WAN Transport", "alljoyn.isat.TransportMask.WWAN",
|
|
FT_BOOLEAN, 16, NULL, TRANSPORT_WWAN,
|
|
NULL, HFILL}
|
|
},
|
|
{&hf_alljoyn_ns_isat_transport_mask_lan,
|
|
{"Wired LAN Transport", "alljoyn.isat.TransportMask.LAN",
|
|
FT_BOOLEAN, 16, NULL, TRANSPORT_LAN,
|
|
NULL, HFILL}
|
|
},
|
|
{&hf_alljoyn_ns_isat_transport_mask_ice,
|
|
{"ICE protocol Transport", "alljoyn.isat.TransportMask.ICE",
|
|
FT_BOOLEAN, 16, NULL, TRANSPORT_ICE,
|
|
NULL, HFILL}
|
|
},
|
|
{&hf_alljoyn_ns_isat_transport_mask_wfd,
|
|
{"Wi-Fi Direct Transport", "alljoyn.isat.TransportMask.WFD",
|
|
FT_BOOLEAN, 16, NULL, TRANSPORT_WFD,
|
|
NULL, HFILL}
|
|
},
|
|
|
|
/******************
|
|
* Wireshark header fields for the message protocol.
|
|
******************/
|
|
{&hf_alljoyn_connect_byte_value,
|
|
{"Connect Initial Byte", "alljoyn.InitialByte",
|
|
FT_UINT8, BASE_HEX, NULL, 0x0,
|
|
NULL, HFILL}
|
|
},
|
|
|
|
/*
|
|
* Wireshark header fields for the SASL messages.
|
|
*/
|
|
{&hf_alljoyn_sasl_command,
|
|
{"SASL command", "alljoyn.SASL.command",
|
|
FT_STRING, BASE_NONE, NULL, 0x0,
|
|
NULL, HFILL}
|
|
},
|
|
{&hf_alljoyn_sasl_parameter,
|
|
{"SASL parameter", "alljoyn.SASL.parameter",
|
|
FT_STRING, BASE_NONE, NULL, 0x0,
|
|
NULL, HFILL}
|
|
},
|
|
|
|
/*
|
|
* Wireshark header fields for the AllJoyn message header.
|
|
*/
|
|
{&hf_alljoyn_mess_header,
|
|
{"Message Header", "alljoyn.header",
|
|
FT_BYTES, BASE_NONE, NULL, 0x0,
|
|
NULL, HFILL}
|
|
},
|
|
{&hf_alljoyn_mess_header_endian,
|
|
{"Endianness", "alljoyn.header.endianess",
|
|
FT_UINT8, BASE_DEC, VALS(endian_encoding_vals), 0x0,
|
|
NULL, HFILL}
|
|
},
|
|
{&hf_alljoyn_mess_header_type,
|
|
{"Message type", "alljoyn.header.type",
|
|
FT_UINT8, BASE_DEC, VALS(message_header_encoding_vals), 0x0,
|
|
NULL, HFILL}
|
|
},
|
|
{&hf_alljoyn_mess_header_flags,
|
|
{"Flags", "alljoyn.header.flags",
|
|
FT_UINT8, BASE_HEX, NULL, 0x0,
|
|
NULL, HFILL}
|
|
},
|
|
|
|
/* Individual fields of the flags byte. */
|
|
{&hf_alljoyn_mess_header_flags_no_reply,
|
|
{"No reply expected", "alljoyn.header.flags.noreply",
|
|
FT_BOOLEAN, 8, NULL, MESSAGE_HEADER_FLAG_NO_REPLY_EXPECTED,
|
|
NULL, HFILL}
|
|
},
|
|
{&hf_alljoyn_mess_header_flags_no_auto_start,
|
|
{"No auto start", "alljoyn.header.flags.noautostart",
|
|
FT_BOOLEAN, 8, NULL, MESSAGE_HEADER_FLAG_NO_AUTO_START,
|
|
NULL, HFILL}
|
|
},
|
|
{&hf_alljoyn_mess_header_flags_allow_remote_msg,
|
|
{"Allow remote messages", "alljoyn.header.flags.allowremotemessages",
|
|
FT_BOOLEAN, 8, NULL, MESSAGE_HEADER_FLAG_ALLOW_REMOTE_MSG,
|
|
NULL, HFILL}
|
|
},
|
|
{&hf_alljoyn_mess_header_flags_sessionless,
|
|
{"Sessionless", "alljoyn.header.flags.sessionless",
|
|
FT_BOOLEAN, 8, NULL, MESSAGE_HEADER_FLAG_SESSIONLESS,
|
|
NULL, HFILL}
|
|
},
|
|
{&hf_alljoyn_mess_header_flags_global_broadcast,
|
|
{"Allow global broadcast", "alljoyn.header.flags.globalbroadcast",
|
|
FT_BOOLEAN, 8, NULL, MESSAGE_HEADER_FLAG_GLOBAL_BROADCAST,
|
|
NULL, HFILL}
|
|
},
|
|
{&hf_alljoyn_mess_header_flags_compressed,
|
|
{"Compressed", "alljoyn.header.flags.compressed",
|
|
FT_BOOLEAN, 8, NULL, MESSAGE_HEADER_FLAG_COMPRESSED,
|
|
NULL, HFILL}
|
|
},
|
|
{&hf_alljoyn_mess_header_flags_encrypted,
|
|
{"Encrypted", "alljoyn.header.flags.encrypted",
|
|
FT_BOOLEAN, 8, NULL, MESSAGE_HEADER_FLAG_ENCRYPTED,
|
|
NULL, HFILL}
|
|
},
|
|
|
|
{&hf_alljoyn_mess_header_majorversion,
|
|
{"Major version", "alljoyn.header.majorversion",
|
|
FT_UINT8, BASE_DEC, NULL, 0,
|
|
NULL, HFILL}
|
|
},
|
|
{&hf_alljoyn_mess_header_body_length,
|
|
{"Body length", "alljoyn.header.bodylength",
|
|
FT_UINT32, BASE_DEC, NULL, 0,
|
|
NULL, HFILL}
|
|
},
|
|
{&hf_alljoyn_mess_header_serial,
|
|
{"Serial number", "alljoyn.header.serial",
|
|
FT_UINT32, BASE_DEC, NULL, 0,
|
|
NULL, HFILL}
|
|
},
|
|
{&hf_alljoyn_mess_header_header_length,
|
|
{"Header length", "alljoyn.header.headerlength",
|
|
FT_UINT32, BASE_DEC, NULL, 0,
|
|
NULL, HFILL}
|
|
},
|
|
|
|
{&hf_alljoyn_mess_header_fields,
|
|
{"Header fields", "alljoyn.headerfields",
|
|
FT_BYTES, BASE_NONE, NULL, 0,
|
|
NULL, HFILL}
|
|
},
|
|
{&hf_alljoyn_mess_header_field,
|
|
{"Header field", "alljoyn.headerfield",
|
|
FT_UINT8, BASE_HEX, VALS(header_field_encoding_vals), 0,
|
|
NULL, HFILL}
|
|
},
|
|
{&hf_alljoyn_mess_body_header_fieldcode,
|
|
{"Field code", "alljoyn.message.fieldcode",
|
|
FT_UINT8, BASE_HEX, NULL, 0,
|
|
NULL, HFILL}
|
|
},
|
|
{&hf_alljoyn_mess_body_header_typeid,
|
|
{"Type ID", "alljoyn.message.typeid",
|
|
FT_UINT8, BASE_CUSTOM, alljoyn_typeid, 0,
|
|
NULL, HFILL}
|
|
},
|
|
|
|
{&hf_alljoyn_mess_body_parameters,
|
|
{"Parameters", "alljoyn.parameters",
|
|
FT_NONE, BASE_NONE, NULL, 0,
|
|
NULL, HFILL}
|
|
},
|
|
{&hf_alljoyn_mess_body_array,
|
|
{"Array", "alljoyn.array",
|
|
FT_NONE, BASE_NONE, NULL, 0,
|
|
NULL, HFILL}
|
|
},
|
|
{&hf_alljoyn_mess_body_structure,
|
|
{"struct", "alljoyn.structure",
|
|
FT_NONE, BASE_NONE, NULL, 0,
|
|
NULL, HFILL}
|
|
},
|
|
{&hf_alljoyn_mess_body_dictionary_entry,
|
|
{"dictionary entry", "alljoyn.dictionary_entry",
|
|
FT_NONE, BASE_NONE, NULL, 0,
|
|
NULL, HFILL}
|
|
},
|
|
{&hf_alljoyn_mess_body_variant,
|
|
{"Variant '", "alljoyn.variant",
|
|
FT_NONE, BASE_NONE, NULL, 0,
|
|
NULL, HFILL}
|
|
},
|
|
{&hf_alljoyn_mess_body_signature_length,
|
|
{"Signature length", "alljoyn.parameter.signature_length",
|
|
FT_UINT8, BASE_DEC, NULL, 0,
|
|
NULL, HFILL}
|
|
},
|
|
{&hf_alljoyn_mess_body_signature,
|
|
{"Signature", "alljoyn.parameter.signature",
|
|
FT_STRING, BASE_NONE, NULL, 0x0,
|
|
NULL, HFILL}
|
|
},
|
|
|
|
{&hf_alljoyn_boolean,
|
|
{"Boolean", "alljoyn.boolean",
|
|
FT_BOOLEAN, BASE_NONE, NULL, 0,
|
|
NULL, HFILL}
|
|
},
|
|
{&hf_alljoyn_uint8,
|
|
{"Unsigned byte", "alljoyn.uint8",
|
|
FT_UINT8, BASE_DEC, NULL, 0,
|
|
NULL, HFILL}
|
|
},
|
|
{&hf_alljoyn_int16,
|
|
{"Signed int16", "alljoyn.int16",
|
|
FT_INT16, BASE_DEC, NULL, 0,
|
|
NULL, HFILL}
|
|
},
|
|
{&hf_alljoyn_uint16,
|
|
{"Unsigned int16", "alljoyn.uint16",
|
|
FT_UINT16, BASE_DEC, NULL, 0,
|
|
NULL, HFILL}
|
|
},
|
|
{&hf_alljoyn_handle,
|
|
{"Handle", "alljoyn.handle",
|
|
FT_UINT32, BASE_HEX, NULL, 0,
|
|
NULL, HFILL}
|
|
},
|
|
{&hf_alljoyn_int32,
|
|
{"Signed int32", "alljoyn.int32",
|
|
FT_INT32, BASE_DEC, NULL, 0,
|
|
NULL, HFILL}
|
|
},
|
|
{&hf_alljoyn_uint32,
|
|
{"Unsigned int32", "alljoyn.uint32",
|
|
FT_UINT32, BASE_DEC, NULL, 0,
|
|
NULL, HFILL}
|
|
},
|
|
{&hf_alljoyn_int64,
|
|
{"Signed int64", "alljoyn.int64",
|
|
FT_INT64, BASE_DEC, NULL, 0,
|
|
NULL, HFILL}
|
|
},
|
|
{&hf_alljoyn_uint64,
|
|
{"Unsigned int64", "alljoyn.uint64",
|
|
FT_UINT64, BASE_DEC, NULL, 0,
|
|
NULL, HFILL}
|
|
},
|
|
{&hf_alljoyn_double,
|
|
{"Double", "alljoyn.double",
|
|
FT_DOUBLE, BASE_NONE, NULL, 0,
|
|
NULL, HFILL}
|
|
},
|
|
|
|
/*
|
|
* Strings are composed of a size and a data arrray.
|
|
*/
|
|
{&hf_alljoyn_string,
|
|
{"Bus Name", "alljoyn.string",
|
|
FT_PROTOCOL, BASE_NONE, NULL, 0x0,
|
|
NULL, HFILL}
|
|
},
|
|
{&hf_alljoyn_string_size_8bit,
|
|
{"String Size 8-bit", "alljoyn.string.size8bit",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL}
|
|
},
|
|
{&hf_alljoyn_string_size_32bit,
|
|
{"String Size 32-bit", "alljoyn.string.size32bit",
|
|
FT_UINT32, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL}
|
|
},
|
|
{&hf_alljoyn_string_data,
|
|
{"String Data", "alljoyn.string.data",
|
|
FT_STRING, BASE_NONE, NULL, 0x0,
|
|
NULL, HFILL}
|
|
},
|
|
};
|
|
|
|
static gint *ett[] = {
|
|
&ett_alljoyn_ns,
|
|
&ett_alljoyn_ns_header,
|
|
&ett_alljoyn_ns_answers,
|
|
&ett_alljoyn_ns_guid_string,
|
|
&ett_alljoyn_ns_isat_entry,
|
|
&ett_alljoyn_ns_string,
|
|
&ett_alljoyn_whohas,
|
|
&ett_alljoyn_string,
|
|
&ett_alljoyn_isat_entry,
|
|
&ett_alljoyn_mess,
|
|
&ett_alljoyn_header,
|
|
&ett_alljoyn_header_flags,
|
|
&ett_alljoyn_mess_header_field,
|
|
&ett_alljoyn_mess_header,
|
|
&ett_alljoyn_mess_body_parameters
|
|
};
|
|
|
|
/* The following are protocols as opposed to data within a protocol. These appear
|
|
* in Wireshark a divider/header between different groups of data.
|
|
*/
|
|
|
|
/* Name service protocols. */ /* name, short name, abbrev */
|
|
proto_AllJoyn_ns = proto_register_protocol("AllJoyn Name Service Protocol", "AllJoyn NS", "ajns");
|
|
|
|
/* Message protocols */
|
|
proto_AllJoyn_mess = proto_register_protocol("AllJoyn Message Protocol", "AllJoyn", "aj");
|
|
|
|
proto_register_field_array(proto_AllJoyn_ns, hf, array_length(hf));
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
}
|
|
|
|
void
|
|
proto_reg_handoff_AllJoyn(void)
|
|
{
|
|
static gboolean initialized = FALSE;
|
|
static dissector_handle_t alljoyn_handle_ns;
|
|
static dissector_handle_t alljoyn_handle_mess;
|
|
|
|
if(!initialized) {
|
|
alljoyn_handle_ns = new_create_dissector_handle(dissect_AllJoyn_name_server, proto_AllJoyn_ns);
|
|
alljoyn_handle_mess = new_create_dissector_handle(dissect_AllJoyn_message, proto_AllJoyn_mess);
|
|
} else {
|
|
dissector_delete_uint("udp.port", name_server_port, alljoyn_handle_ns);
|
|
dissector_delete_uint("tcp.port", name_server_port, alljoyn_handle_ns);
|
|
dissector_delete_uint("udp.port", message_port, alljoyn_handle_mess);
|
|
dissector_delete_uint("tcp.port", message_port, alljoyn_handle_mess);
|
|
}
|
|
|
|
dissector_add_uint("udp.port", name_server_port, alljoyn_handle_ns);
|
|
dissector_add_uint("tcp.port", name_server_port, alljoyn_handle_ns);
|
|
|
|
dissector_add_uint("udp.port", message_port, alljoyn_handle_mess);
|
|
dissector_add_uint("tcp.port", message_port, alljoyn_handle_mess);
|
|
}
|
|
|
|
/*
|
|
* Editor modelines - http://www.wireshark.org/tools/modelines.html
|
|
*
|
|
* Local variables:
|
|
* c-basic-offset: 4
|
|
* tab-width: 8
|
|
* indent-tabs-mode: nil
|
|
* End:
|
|
*
|
|
* vi: set shiftwidth=4 tabstop=8 expandtab:
|
|
* :indentSize=4:tabSize=8:noTabs=true:
|
|
*/
|