1356 lines
59 KiB
C
1356 lines
59 KiB
C
/* packet-capwap.c
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* Routines for CAPWAP dissection (RFC 5415)
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* Copyright 2009, Alexis La Goutte <alexis.lagoutte at gmail dot com>
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*
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* $Id$
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1998 Gerald Combs
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <epan/packet.h>
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#include <epan/prefs.h>
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#include <epan/sminmpec.h>
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#define UDP_PORT_CAPWAP_CONTROL 5246
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#define UDP_PORT_CAPWAP_DATA 5247
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static guint global_capwap_control_udp_port = UDP_PORT_CAPWAP_CONTROL;
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static guint global_capwap_data_udp_port = UDP_PORT_CAPWAP_DATA;
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/* TODO LIST !
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* add support of optional Header (Radio Mac/Wireless Specific Information : Section 4.3)
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* add decryption of DLTS Message
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* add support of all Messages Element Type
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*/
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/* Forward declaration we need below */
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void proto_reg_handoff_capwap(void);
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/* Initialize the protocol and registered fields */
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static int proto_capwap = -1;
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static int hf_capwap_preamble = -1;
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static int hf_capwap_preamble_version = -1;
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static int hf_capwap_preamble_type = -1;
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static int hf_capwap_preamble_reserved = -1;
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static int hf_capwap_header = -1;
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static int hf_capwap_header_hlen = -1;
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static int hf_capwap_header_rid = -1;
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static int hf_capwap_header_wbid = -1;
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static int hf_capwap_header_flags = -1;
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static int hf_capwap_header_flags_t = -1;
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static int hf_capwap_header_flags_f = -1;
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static int hf_capwap_header_flags_l = -1;
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static int hf_capwap_header_flags_w = -1;
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static int hf_capwap_header_flags_m = -1;
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static int hf_capwap_header_flags_k = -1;
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static int hf_capwap_header_flags_r = -1;
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static int hf_capwap_header_fragment_id = -1;
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static int hf_capwap_header_fragment_offset = -1;
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static int hf_capwap_header_reserved = -1;
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static int hf_capwap_control_header = -1;
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static int hf_capwap_control_header_msg_type = -1;
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static int hf_capwap_control_header_msg_type_enterprise_nbr = -1;
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static int hf_capwap_control_header_msg_type_enterprise_specific = -1;
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static int hf_capwap_control_header_seq_number = -1;
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static int hf_capwap_control_header_flags = -1;
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static int hf_capwap_control_header_msg_element_length = -1;
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static int hf_capwap_message_element = -1;
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static int hf_capwap_msg_element_type = -1;
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static int hf_capwap_msg_element_length = -1;
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static int hf_capwap_msg_element_value = -1;
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static int hf_capwap_msg_element_type_ac_descriptor_stations = -1;
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static int hf_capwap_msg_element_type_ac_descriptor_limit = -1;
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static int hf_capwap_msg_element_type_ac_descriptor_active_wtp = -1;
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static int hf_capwap_msg_element_type_ac_descriptor_max_wtp = -1;
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/* AC Descriptor Security Flags... */
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static int hf_capwap_msg_element_type_ac_descriptor_security = -1;
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static int hf_capwap_msg_element_type_ac_descriptor_security_s = -1;
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static int hf_capwap_msg_element_type_ac_descriptor_security_x = -1;
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static int hf_capwap_msg_element_type_ac_descriptor_security_r = -1;
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static int hf_capwap_msg_element_type_ac_descriptor_rmac_field = -1;
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static int hf_capwap_msg_element_type_ac_descriptor_reserved = -1;
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/* AC Descriptor DTLS Policy Flags... */
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static int hf_capwap_msg_element_type_ac_descriptor_dtls_policy = -1;
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static int hf_capwap_msg_element_type_ac_descriptor_dtls_policy_d = -1;
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static int hf_capwap_msg_element_type_ac_descriptor_dtls_policy_c = -1;
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static int hf_capwap_msg_element_type_ac_descriptor_dtls_policy_r = -1;
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static int hf_capwap_msg_element_type_ac_information_vendor = -1;
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static int hf_capwap_msg_element_type_ac_information_type = -1;
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static int hf_capwap_msg_element_type_ac_information_length = -1;
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static int hf_capwap_msg_element_type_ac_information_value = -1;
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static int hf_capwap_msg_element_type_ac_information_hardware_version = -1;
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static int hf_capwap_msg_element_type_ac_information_software_version = -1;
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static int hf_capwap_msg_element_type_ac_name = -1;
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static int hf_capwap_msg_element_type_capwap_control_ipv4 = -1;
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static int hf_capwap_msg_element_type_capwap_control_wtp_count = -1;
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static int hf_capwap_msg_element_type_discovery_type = -1;
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static int hf_capwap_msg_element_type_wtp_board_data_vendor = -1;
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static int hf_capwap_msg_element_type_wtp_board_data_type = -1;
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static int hf_capwap_msg_element_type_wtp_board_data_length = -1;
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static int hf_capwap_msg_element_type_wtp_board_data_value = -1;
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static int hf_capwap_msg_element_type_wtp_board_data_wtp_model_number = -1;
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static int hf_capwap_msg_element_type_wtp_board_data_wtp_serial_number = -1;
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static int hf_capwap_msg_element_type_wtp_board_data_wtp_board_id = -1;
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static int hf_capwap_msg_element_type_wtp_board_data_wtp_board_revision = -1;
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static int hf_capwap_msg_element_type_wtp_board_data_base_mac_address = -1;
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static int hf_capwap_msg_element_type_wtp_descriptor_max_radios = -1;
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static int hf_capwap_msg_element_type_wtp_descriptor_radio_in_use = -1;
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static int hf_capwap_msg_element_type_wtp_descriptor_number_encrypt = -1;
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static int hf_capwap_msg_element_type_wtp_descriptor_encrypt_reserved = -1;
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static int hf_capwap_msg_element_type_wtp_descriptor_encrypt_wbid = -1;
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static int hf_capwap_msg_element_type_wtp_descriptor_encrypt_capabilities = -1;
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static int hf_capwap_msg_element_type_wtp_descriptor_vendor = -1;
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static int hf_capwap_msg_element_type_wtp_descriptor_type = -1;
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static int hf_capwap_msg_element_type_wtp_descriptor_length = -1;
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static int hf_capwap_msg_element_type_wtp_descriptor_value = -1;
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static int hf_capwap_msg_element_type_wtp_descriptor_hardware_version = -1;
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static int hf_capwap_msg_element_type_wtp_descriptor_active_software_version = -1;
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static int hf_capwap_msg_element_type_wtp_descriptor_boot_version = -1;
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static int hf_capwap_msg_element_type_wtp_descriptor_other_software_version = -1;
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static int hf_capwap_msg_element_type_wtp_frame_tunnel_mode = -1;
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static int hf_capwap_msg_element_type_wtp_frame_tunnel_mode_n = -1;
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static int hf_capwap_msg_element_type_wtp_frame_tunnel_mode_e = -1;
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static int hf_capwap_msg_element_type_wtp_frame_tunnel_mode_l = -1;
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static int hf_capwap_msg_element_type_wtp_frame_tunnel_mode_r = -1;
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static int hf_capwap_msg_element_type_wtp_mac_type = -1;
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static dissector_handle_t dtls_handle;
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static dissector_handle_t ieee8023_handle;
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static dissector_handle_t ieee80211_handle;
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static dissector_handle_t data_handle;
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/* Initialize the subtree pointers */
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static gint ett_capwap = -1;
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/* ************************************************************************* */
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/* Header Type */
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/* ************************************************************************* */
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static const value_string type_header_vals[] = {
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{ 0, "CAPWAP Header" },
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{ 1, "CAPWAP DTLS Header" },
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{ 0, NULL }
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};
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/* ************************************************************************* */
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/* Wireless Binding IDentifier (WBID) */
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/* ************************************************************************* */
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static const value_string type_wbid[] = {
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{ 0, "Reserved" },
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{ 1, "IEEE 802.11" },
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{ 2, "IEEE 802.16" }, /* From old RFC Draft... */
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{ 3, "EPCGlobal" },
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{ 0, NULL }
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};
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/* ************************************************************************* */
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/* flag Type Transported (payload) */
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/* ************************************************************************* */
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static const true_false_string flag_type_t = {
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"Native frame format (see Wireless Binding ID field)",
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"IEEE 802.3 frame"
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};
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/* ************************************************************************* */
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/* flag Type Fragment */
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/* ************************************************************************* */
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static const true_false_string flag_type_f = {
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"Fragmented",
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"Don't Fragment"
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};
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/* ************************************************************************* */
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/* flag Type Last Fragment */
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/* ************************************************************************* */
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static const true_false_string flag_type_l = {
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"This is the last fragment",
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"More fragments follow"
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};
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/* ************************************************************************* */
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/* flag Type Wireless */
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/* ************************************************************************* */
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static const true_false_string flag_type_w = {
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"Wireless Specific Information is present",
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"No Wireless Specific Information"
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};
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/* ************************************************************************* */
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/* flag Type Radio Mac */
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/* ************************************************************************* */
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static const true_false_string flag_type_m = {
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"Radio MAC Address is present",
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"No Radio MAC Address"
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};
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/* ************************************************************************* */
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/* flag Type Keep Alive */
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/* ************************************************************************* */
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static const true_false_string flag_type_k = {
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"Keep-Alive Packet",
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"No Keep-Alive"
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};
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/* ************************************************************************* */
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/* Message Type Value */
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/* ************************************************************************* */
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static const value_string message_type[] = {
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{ 1, "Discovery Request" },
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{ 2, "Discovery Response" },
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{ 3, "Join Request" },
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{ 4, "Join Response" },
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{ 5, "Configuration Status Request" },
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{ 6, "Configuration Status Response" },
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{ 7, "Configuration Update Request" },
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{ 8, "Configuration Update Response" },
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{ 9, "WTP Event Request" },
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{ 10, "WTP Event Response" },
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{ 11, "Change State Request" },
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{ 12, "Change State Response" },
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{ 13, "Echo Request" },
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{ 14, "Echo Response" },
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{ 15, "Image Data Request" },
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{ 16, "Image Data Response" },
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{ 17, "Reset Request" },
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{ 18, "Reset Response" },
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{ 19, "Primary Discovery Request" },
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{ 20, "Primary Discovery Response" },
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{ 21, "Data Transfer Request" },
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{ 22, "Data Transfer Response" },
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{ 23, "Clear Configuration Request" },
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{ 24, "Clear Configuration Response" },
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{ 25, "Station Configuration Request" },
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{ 26, "Station Configuration Response" },
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{ 0, NULL }
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};
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/* ************************************************************************* */
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/* Message Element Type */
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/* ************************************************************************* */
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#define TYPE_AC_DESCRIPTOR 1
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#define TYPE_AC_IPV4_LIST 2
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#define TYPE_AC_IPV6_LIST 3
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#define TYPE_AC_NAME 4
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#define TYPE_AC_NAME_W_PRIORITY 5
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#define TYPE_AC_TIMESTAMP 6
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#define TYPE_ADD_MAC_ACL_ENTRY 7
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#define TYPE_ADD_STATION 8
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#define TYPE_RESERVED_9 9
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#define TYPE_CAPWAP_CONTROL_IPV4_ADDRESS 10
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#define TYPE_CAPWAP_CONTROL_IPV6_ADDRESS 11
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#define TYPE_CAPWAP_TIMERS 12
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#define TYPE_DATA_TRANSFER_DATA 13
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#define TYPE_DATA_TRANSFER_MODE 14
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#define TYPE_DESCRYPTION_ERROR_REPORT 15
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#define TYPE_DECRYPTION_ERROR_REPORT_PERIOD 16
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#define TYPE_DELETE_MAC_ENTRY 17
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#define TYPE_DELETE_STATION 18
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#define TYPE_RESERVED_19 19
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#define TYPE_DISCOVERY_TYPE 20
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#define TYPE_DUPLICATE_IPV4_ADDRESS 21
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#define TYPE_DUPLICATE_IPV6_ADDRESS 22
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#define TYPE_IDLE_TIMEOUT 23
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#define TYPE_IMAGE_DATA 24
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#define TYPE_IMAGE_IDENTIFIER 25
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#define TYPE_IMAGE_INFORMATION 26
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#define TYPE_INITIATE_DOWNLOAD 27
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#define TYPE_LOCATION_DATA 28
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#define TYPE_MAXIMUM_MESSAGE_LENGTH 29
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#define TYPE_CAPWAP_LOCAL_IPV4_ADDRESS 30
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#define TYPE_RADIO_ADMINISTRATIVE_STATE 31
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#define TYPE_RADIO_OPERATIONAL_STATE 32
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#define TYPE_RESULT_CODE 33
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#define TYPE_RETURNED_MESSAGE_ELEMENT 34
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#define TYPE_SESSION_ID 35
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#define TYPE_STATISTICS_TIMER 36
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#define TYPE_VENDOR_SPECIFIC_PAYLOAD 37
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#define TYPE_WTP_BOARD_DATA 38
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#define TYPE_WTP_DESCRIPTOR 39
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#define TYPE_WTP_FALLBACK 40
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#define TYPE_WTP_FRAME_TUNNEL_MODE 41
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#define TYPE_RESERVED_42 42
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#define TYPE_RESERVED_43 43
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#define TYPE_WTP_MAC_TYPE 44
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#define TYPE_WTP_NAME 45
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#define TYPE_RESERVED_46 46
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#define TYPE_WTP_RADIO_STATISTICS 47
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#define TYPE_WTP_REBOOT_STATISTICS 48
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#define TYPE_WTP_STATIC_IP_ADDRESS_INFORMATION 49
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#define TYPE_CAPWAP_LOCAL_IPV6_ADDRESS 50
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#define TYPE_CAPWAP_TRANSPORT_PROTOCOL 51
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#define TYPE_MTU_DISCOVERY_PADDING 52
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#define TYPE_ECN_SUPPORT 53
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/* ************************************************************************* */
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/* Message Element Type Value */
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/* ************************************************************************* */
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static const value_string message_element_type_vals[] = {
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{ TYPE_AC_DESCRIPTOR, "AC Descriptor" },
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{ TYPE_AC_IPV4_LIST, "AC IPv4 List" },
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{ TYPE_AC_IPV6_LIST, "AC IPv6 List" },
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{ TYPE_AC_NAME, "AC Name" },
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{ TYPE_AC_NAME_W_PRIORITY, "AC Name With Priority" },
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{ TYPE_AC_TIMESTAMP, "AC Timestamp" },
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{ TYPE_ADD_MAC_ACL_ENTRY, "Add MAC ACL Entry" },
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{ TYPE_ADD_STATION, "Add Station" },
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{ TYPE_RESERVED_9, "Reserved" },
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{ TYPE_CAPWAP_CONTROL_IPV4_ADDRESS, "CAPWAP Control IPv4 Address" },
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{ TYPE_CAPWAP_CONTROL_IPV6_ADDRESS, "CAPWAP Control IPv6 Address" },
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{ TYPE_CAPWAP_TIMERS, "CAPWAP Timers" },
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{ TYPE_DATA_TRANSFER_DATA, "Data Transfer Data" },
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{ TYPE_DATA_TRANSFER_MODE, "Data Transfer Mode" },
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{ TYPE_DESCRYPTION_ERROR_REPORT, "Decryption Error Report" },
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{ TYPE_DECRYPTION_ERROR_REPORT_PERIOD, "Decryption Error Report Period" },
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{ TYPE_DELETE_MAC_ENTRY, "Delete MAC ACL Entry" },
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{ TYPE_DELETE_STATION, "Delete Station" },
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{ TYPE_RESERVED_19, "Reserved" },
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{ TYPE_DISCOVERY_TYPE, "Discovery Type" },
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{ TYPE_DUPLICATE_IPV4_ADDRESS, "Duplicate IPv4 Address" },
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{ TYPE_DUPLICATE_IPV6_ADDRESS, "Duplicate IPv6 Address" },
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{ TYPE_IDLE_TIMEOUT, "Idle Timeout" },
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{ TYPE_IMAGE_DATA, "Image Data" },
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{ TYPE_IMAGE_IDENTIFIER, "Image Identifier" },
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{ TYPE_IMAGE_INFORMATION, "Image Information" },
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{ TYPE_INITIATE_DOWNLOAD, "Initiate Download" },
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{ TYPE_LOCATION_DATA, "Location Data" },
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{ TYPE_MAXIMUM_MESSAGE_LENGTH, "Maximum Message Length" },
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{ TYPE_CAPWAP_LOCAL_IPV4_ADDRESS, "CAPWAP Local IPv4 Address" },
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{ TYPE_RADIO_ADMINISTRATIVE_STATE, "Radio Administrative State " },
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{ TYPE_RADIO_OPERATIONAL_STATE, "Radio Operational State" },
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{ TYPE_RESULT_CODE, "Result Code" },
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{ TYPE_RETURNED_MESSAGE_ELEMENT, "Returned Message Element" },
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{ TYPE_SESSION_ID, "Session ID" },
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{ TYPE_STATISTICS_TIMER, "Statistics Timer" },
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{ TYPE_VENDOR_SPECIFIC_PAYLOAD, "Vendor Specific Payload" },
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{ TYPE_WTP_BOARD_DATA, "WTP Board Data" },
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{ TYPE_WTP_DESCRIPTOR, "WTP Descriptor" },
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{ TYPE_WTP_FALLBACK, "WTP Fallback " },
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{ TYPE_WTP_FRAME_TUNNEL_MODE, "WTP Frame Tunnel Mode " },
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{ TYPE_RESERVED_42, "Reserved" },
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{ TYPE_RESERVED_43, "Reserved" },
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{ TYPE_WTP_MAC_TYPE, "WTP MAC Type" },
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{ TYPE_WTP_NAME, "WTP Name" },
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{ TYPE_RESERVED_46, "Unused/Reserved" },
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{ TYPE_WTP_RADIO_STATISTICS, "WTP Radio Statistics" },
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{ TYPE_WTP_REBOOT_STATISTICS, "WTP Reboot Statistics" },
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{ TYPE_WTP_STATIC_IP_ADDRESS_INFORMATION, "WTP Static IP Address Information" },
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{ TYPE_CAPWAP_LOCAL_IPV6_ADDRESS, "CAPWAP Local IPv6 Address" },
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{ TYPE_CAPWAP_TRANSPORT_PROTOCOL, "CAPWAP Transport Protocol" },
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{ TYPE_MTU_DISCOVERY_PADDING, "MTU Discovery Padding" },
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{ TYPE_ECN_SUPPORT, "ECN Support" },
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{ 0, NULL }
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};
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/* ************************************************************************* */
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/* Discovery Type */
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/* ************************************************************************* */
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static const value_string discovery_type_vals[] = {
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{ 0, "Unknown" },
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{ 1, "Static Configuration" },
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{ 2, "DHCP" },
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{ 3, "DNS" },
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{ 4, "AC Referral" },
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{ 0, NULL }
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};
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/* ************************************************************************* */
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/* Radio MAC Address Field */
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/* ************************************************************************* */
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static const value_string rmac_field_vals[] = {
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{ 0, "Reserved" },
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{ 1, "Supported" },
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{ 2, "Not Supported" },
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{ 0, NULL }
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};
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/* ************************************************************************* */
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/* Board Data Type Value */
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/* ************************************************************************* */
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#define BOARD_DATA_WTP_MODEL_NUMBER 0
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#define BOARD_DATA_WTP_SERIAL_NUMBER 1
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#define BOARD_DATA_BOARD_ID 2
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#define BOARD_DATA_BOARD_REVISION 3
|
|
#define BOARD_DATA_BASE_MAC_ADDRESS 4
|
|
|
|
static const value_string board_data_type_vals[] = {
|
|
{ BOARD_DATA_WTP_MODEL_NUMBER, "WTP Model Number" },
|
|
{ BOARD_DATA_WTP_SERIAL_NUMBER, "WTP Serial Number" },
|
|
{ BOARD_DATA_BOARD_ID, "Board ID" },
|
|
{ BOARD_DATA_BOARD_REVISION, "Board Revision" },
|
|
{ BOARD_DATA_BASE_MAC_ADDRESS, "Base MAC Address" },
|
|
{ 0, NULL }
|
|
};
|
|
/* ************************************************************************* */
|
|
/* Descriptor WTP Type Value */
|
|
/* ************************************************************************* */
|
|
#define WTP_DESCRIPTOR_HARDWARE_VERSION 0
|
|
#define WTP_DESCRIPTOR_ACTIVE_SOFTWARE_VERSION 1
|
|
#define WTP_DESCRIPTOR_BOOT_VERSION 2
|
|
#define WTP_DESCRIPTOR_OTHER_SOFTWARE_VERSION 3
|
|
|
|
static const value_string wtp_descriptor_type_vals[] = {
|
|
{ WTP_DESCRIPTOR_HARDWARE_VERSION, "WTP Hardware Version" },
|
|
{ WTP_DESCRIPTOR_ACTIVE_SOFTWARE_VERSION, "WTP Active Software Version" },
|
|
{ WTP_DESCRIPTOR_BOOT_VERSION, "WTP Boot Version" },
|
|
{ WTP_DESCRIPTOR_OTHER_SOFTWARE_VERSION, "WTP Other Software Version" },
|
|
{ 0, NULL }
|
|
};
|
|
/* ************************************************************************* */
|
|
/* AC Information Type Value */
|
|
/* ************************************************************************* */
|
|
#define AC_INFORMATION_HARDWARE_VERSION 4
|
|
#define AC_INFORMATION_SOFTWARE_VERSION 5
|
|
|
|
static const value_string ac_information_type_vals[] = {
|
|
{ AC_INFORMATION_HARDWARE_VERSION, "AC Hardware Version" },
|
|
{ AC_INFORMATION_SOFTWARE_VERSION, "AC Software Version" },
|
|
{ 0, NULL }
|
|
};
|
|
/* ************************************************************************* */
|
|
/* WTP MAC Type */
|
|
/* ************************************************************************* */
|
|
static const value_string wtp_mac_vals[] = {
|
|
{ 0, "Local MAC" },
|
|
{ 1, "Split MAC" },
|
|
{ 2, "Both (Local and Split MAC)" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
|
|
static void
|
|
dissect_capwap_encryption_capabilities(tvbuff_t *tvb, proto_tree *encryption_capabilities_tree, guint offset)
|
|
{
|
|
guint wbid,encryption_capabilities = 0;
|
|
proto_item *encryption_capabilities_item;
|
|
proto_tree *sub_encryption_capabilities_tree;
|
|
|
|
encryption_capabilities = tvb_get_ntohs(tvb, offset+1);
|
|
wbid = tvb_get_bits8(tvb, offset*8+3,5);
|
|
|
|
encryption_capabilities_item = proto_tree_add_text(encryption_capabilities_tree, tvb, offset, 3, "Encryption Capabilities: (WBID=%d) %d", wbid, encryption_capabilities);
|
|
sub_encryption_capabilities_tree = proto_item_add_subtree(encryption_capabilities_item, ett_capwap);
|
|
|
|
proto_tree_add_uint(sub_encryption_capabilities_tree,hf_capwap_msg_element_type_wtp_descriptor_encrypt_reserved, tvb, offset, 1, tvb_get_bits8(tvb, offset*8,3));
|
|
|
|
proto_tree_add_uint(sub_encryption_capabilities_tree,hf_capwap_msg_element_type_wtp_descriptor_encrypt_wbid, tvb, offset, 1, wbid);
|
|
|
|
proto_tree_add_item(sub_encryption_capabilities_tree, hf_capwap_msg_element_type_wtp_descriptor_encrypt_capabilities, tvb, offset+1, 2, FALSE);
|
|
}
|
|
|
|
/* Returns the number of bytes consumed by this option. */
|
|
static int
|
|
dissect_capwap_ac_information(tvbuff_t *tvb, proto_tree *ac_information_type_tree, guint offset)
|
|
{
|
|
guint optlen,ac_information_type = 0;
|
|
proto_item *ac_information_type_item;
|
|
proto_tree *sub_ac_information_type_tree;
|
|
|
|
ac_information_type = tvb_get_ntohs(tvb, offset+4);
|
|
optlen = tvb_get_ntohs(tvb, offset+6);
|
|
ac_information_type_item = proto_tree_add_text(ac_information_type_tree, tvb, offset, 4+2+2+optlen, "AC Information Type: (t=%d,l=%d) %s", ac_information_type, optlen, val_to_str(ac_information_type,ac_information_type_vals,"Unknown AC Information Type (%02d)") );
|
|
sub_ac_information_type_tree = proto_item_add_subtree(ac_information_type_item, ett_capwap);
|
|
|
|
proto_tree_add_item(sub_ac_information_type_tree, hf_capwap_msg_element_type_ac_information_vendor, tvb, offset, 4, FALSE);
|
|
|
|
proto_tree_add_item(sub_ac_information_type_tree, hf_capwap_msg_element_type_ac_information_type, tvb, offset+4, 2, FALSE);
|
|
|
|
proto_tree_add_item(sub_ac_information_type_tree, hf_capwap_msg_element_type_ac_information_length, tvb, offset+6, 2, FALSE);
|
|
|
|
proto_tree_add_item(sub_ac_information_type_tree, hf_capwap_msg_element_type_ac_information_value, tvb, offset+8, optlen, FALSE);
|
|
switch (ac_information_type) {
|
|
case AC_INFORMATION_HARDWARE_VERSION:
|
|
proto_tree_add_item(sub_ac_information_type_tree, hf_capwap_msg_element_type_ac_information_hardware_version, tvb, offset+8, optlen, FALSE);
|
|
break;
|
|
|
|
case AC_INFORMATION_SOFTWARE_VERSION:
|
|
proto_tree_add_item(sub_ac_information_type_tree, hf_capwap_msg_element_type_ac_information_software_version, tvb, offset+8, optlen, FALSE);
|
|
break;
|
|
|
|
default:
|
|
/* No Default Action */
|
|
break;
|
|
}
|
|
return 4+2+2+optlen;
|
|
}
|
|
|
|
/* Returns the number of bytes consumed by this option. */
|
|
static int
|
|
dissect_capwap_wtp_descriptor(tvbuff_t *tvb, proto_tree *wtp_descriptor_type_tree, guint offset)
|
|
{
|
|
guint optlen,wtp_descriptor_type = 0;
|
|
proto_item *wtp_descriptor_type_item;
|
|
proto_tree *sub_wtp_descriptor_type_tree;
|
|
|
|
wtp_descriptor_type = tvb_get_ntohs(tvb, offset+4);
|
|
optlen = tvb_get_ntohs(tvb, offset+6);
|
|
wtp_descriptor_type_item = proto_tree_add_text(wtp_descriptor_type_tree, tvb, offset, 4+2+2+optlen, "WTP Descriptor Type: (t=%d,l=%d) %s", wtp_descriptor_type, optlen, val_to_str(wtp_descriptor_type,wtp_descriptor_type_vals,"Unknown WTP Descriptor Type (%02d)") );
|
|
sub_wtp_descriptor_type_tree = proto_item_add_subtree(wtp_descriptor_type_item, ett_capwap);
|
|
|
|
proto_tree_add_item(sub_wtp_descriptor_type_tree, hf_capwap_msg_element_type_wtp_descriptor_vendor, tvb, offset, 4, FALSE);
|
|
|
|
proto_tree_add_item(sub_wtp_descriptor_type_tree, hf_capwap_msg_element_type_wtp_descriptor_type, tvb, offset+4, 2, FALSE);
|
|
|
|
proto_tree_add_item(sub_wtp_descriptor_type_tree, hf_capwap_msg_element_type_wtp_descriptor_length, tvb, offset+6, 2, FALSE);
|
|
|
|
proto_tree_add_item(sub_wtp_descriptor_type_tree, hf_capwap_msg_element_type_wtp_descriptor_value, tvb, offset+8, optlen, FALSE);
|
|
|
|
switch (wtp_descriptor_type) {
|
|
case WTP_DESCRIPTOR_HARDWARE_VERSION:
|
|
proto_tree_add_item(sub_wtp_descriptor_type_tree, hf_capwap_msg_element_type_wtp_descriptor_hardware_version, tvb, offset+8, optlen, FALSE);
|
|
break;
|
|
|
|
case WTP_DESCRIPTOR_ACTIVE_SOFTWARE_VERSION:
|
|
proto_tree_add_item(sub_wtp_descriptor_type_tree, hf_capwap_msg_element_type_wtp_descriptor_active_software_version, tvb, offset+8, optlen, FALSE);
|
|
break;
|
|
|
|
case WTP_DESCRIPTOR_BOOT_VERSION:
|
|
proto_tree_add_item(sub_wtp_descriptor_type_tree, hf_capwap_msg_element_type_wtp_descriptor_boot_version, tvb, offset+8, optlen, FALSE);
|
|
break;
|
|
|
|
case WTP_DESCRIPTOR_OTHER_SOFTWARE_VERSION:
|
|
proto_tree_add_item(sub_wtp_descriptor_type_tree, hf_capwap_msg_element_type_wtp_descriptor_other_software_version, tvb, offset+8, optlen, FALSE);
|
|
break;
|
|
|
|
default:
|
|
/* No Default Action */
|
|
break;
|
|
}
|
|
|
|
return 4+2+2+optlen;
|
|
}
|
|
|
|
/* Returns the number of bytes consumed by this option. */
|
|
static int
|
|
dissect_capwap_board_data(tvbuff_t *tvb, proto_tree *board_data_type_tree, guint offset)
|
|
{
|
|
guint optlen,board_data_type = 0;
|
|
proto_item *board_data_type_item;
|
|
proto_tree *sub_board_data_type_tree;
|
|
|
|
board_data_type = tvb_get_ntohs(tvb, offset);
|
|
optlen = tvb_get_ntohs(tvb, offset+2);
|
|
board_data_type_item = proto_tree_add_text(board_data_type_tree, tvb, offset, 2+2+optlen, "Board Data Type: (t=%d,l=%d) %s", board_data_type, optlen, val_to_str(board_data_type,board_data_type_vals,"Unknown Board Data Type (%02d)") );
|
|
sub_board_data_type_tree = proto_item_add_subtree(board_data_type_item, ett_capwap);
|
|
|
|
proto_tree_add_item(sub_board_data_type_tree, hf_capwap_msg_element_type_wtp_board_data_type,tvb, offset, 2, FALSE);
|
|
|
|
proto_tree_add_item(sub_board_data_type_tree, hf_capwap_msg_element_type_wtp_board_data_length, tvb, offset+2, 2, FALSE);
|
|
|
|
proto_tree_add_item(sub_board_data_type_tree, hf_capwap_msg_element_type_wtp_board_data_value, tvb, offset+4, optlen, FALSE);
|
|
switch (board_data_type) {
|
|
case BOARD_DATA_WTP_MODEL_NUMBER:
|
|
proto_tree_add_item(sub_board_data_type_tree, hf_capwap_msg_element_type_wtp_board_data_wtp_model_number, tvb, offset+4, optlen, FALSE);
|
|
break;
|
|
|
|
case BOARD_DATA_WTP_SERIAL_NUMBER:
|
|
proto_tree_add_item(sub_board_data_type_tree, hf_capwap_msg_element_type_wtp_board_data_wtp_serial_number, tvb, offset+4, optlen, FALSE);
|
|
break;
|
|
|
|
case BOARD_DATA_BOARD_ID:
|
|
proto_tree_add_item(sub_board_data_type_tree, hf_capwap_msg_element_type_wtp_board_data_wtp_board_id, tvb, offset+4, optlen, FALSE);
|
|
break;
|
|
|
|
case BOARD_DATA_BOARD_REVISION:
|
|
proto_tree_add_item(sub_board_data_type_tree, hf_capwap_msg_element_type_wtp_board_data_wtp_board_revision, tvb, offset+4, optlen, FALSE);
|
|
break;
|
|
|
|
case BOARD_DATA_BASE_MAC_ADDRESS:
|
|
proto_tree_add_item(sub_board_data_type_tree, hf_capwap_msg_element_type_wtp_board_data_base_mac_address, tvb, offset+4, 6, FALSE);
|
|
break;
|
|
|
|
default:
|
|
/* No Default Action */
|
|
break;
|
|
}
|
|
|
|
return 2+2+optlen;
|
|
}
|
|
|
|
/* Returns the number of bytes consumed by this option. */
|
|
static int
|
|
dissect_capwap_message_element_type(tvbuff_t *tvb, proto_tree *msg_element_type_tree, guint offset)
|
|
{
|
|
guint optlen, offset_end, number_encrypt, i, msg_element_type = 0;
|
|
proto_item *msg_element_type_item, *msg_element_type_item_flag;
|
|
proto_tree *sub_msg_element_type_tree, *sub_msg_element_type_flag_tree;
|
|
|
|
msg_element_type = tvb_get_ntohs(tvb, offset);
|
|
optlen = tvb_get_ntohs(tvb, offset+2);
|
|
msg_element_type_item = proto_tree_add_text(msg_element_type_tree, tvb, offset, 2+2+optlen, "Type: (t=%d,l=%d) %s", msg_element_type, optlen, val_to_str(msg_element_type,message_element_type_vals,"Unknown Message Element Type (%02d)") );
|
|
sub_msg_element_type_tree = proto_item_add_subtree(msg_element_type_item, ett_capwap);
|
|
|
|
proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_type,tvb, offset, 2, FALSE);
|
|
|
|
proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_length, tvb, offset+2, 2, FALSE);
|
|
|
|
proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_value, tvb, offset+4, optlen, FALSE);
|
|
|
|
switch (msg_element_type) {
|
|
case TYPE_AC_DESCRIPTOR: /* AC Descriptor (1) */
|
|
proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_type_ac_descriptor_stations, tvb, offset+4, 2, FALSE);
|
|
proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_type_ac_descriptor_limit, tvb, offset+6, 2, FALSE);
|
|
proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_type_ac_descriptor_active_wtp, tvb, offset+8, 2, FALSE);
|
|
proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_type_ac_descriptor_max_wtp, tvb, offset+10, 2, FALSE);
|
|
|
|
/* AC Descriptor Security Flags... */
|
|
msg_element_type_item_flag = proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_type_ac_descriptor_security, tvb, offset+12, 1, FALSE);
|
|
sub_msg_element_type_flag_tree = proto_item_add_subtree(msg_element_type_item_flag, ett_capwap);
|
|
|
|
proto_tree_add_boolean(sub_msg_element_type_flag_tree, hf_capwap_msg_element_type_ac_descriptor_security_r, tvb, offset+12, 1, FALSE);
|
|
proto_tree_add_boolean(sub_msg_element_type_flag_tree, hf_capwap_msg_element_type_ac_descriptor_security_s, tvb, offset+12, 1, FALSE);
|
|
proto_tree_add_boolean(sub_msg_element_type_flag_tree, hf_capwap_msg_element_type_ac_descriptor_security_x, tvb, offset+12, 1, FALSE);
|
|
|
|
proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_type_ac_descriptor_rmac_field, tvb, offset+13, 1, FALSE);
|
|
proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_type_ac_descriptor_reserved, tvb, offset+14, 1, FALSE);
|
|
|
|
/* AC Descriptor DTLS Flags... */
|
|
msg_element_type_item_flag = proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_type_ac_descriptor_dtls_policy, tvb, offset+15, 1, FALSE);
|
|
sub_msg_element_type_flag_tree = proto_item_add_subtree(msg_element_type_item_flag, ett_capwap);
|
|
|
|
proto_tree_add_item(sub_msg_element_type_flag_tree, hf_capwap_msg_element_type_ac_descriptor_dtls_policy_r, tvb, offset+15, 1, FALSE);
|
|
proto_tree_add_item(sub_msg_element_type_flag_tree, hf_capwap_msg_element_type_ac_descriptor_dtls_policy_d, tvb, offset+15, 1, FALSE);
|
|
proto_tree_add_item(sub_msg_element_type_flag_tree, hf_capwap_msg_element_type_ac_descriptor_dtls_policy_c, tvb, offset+15, 1, FALSE);
|
|
|
|
offset_end = offset + optlen -4;
|
|
offset += 4 + 12;
|
|
while (offset < offset_end) {
|
|
offset += dissect_capwap_ac_information(tvb, sub_msg_element_type_tree, offset);
|
|
}
|
|
break;
|
|
|
|
case TYPE_AC_NAME: /* AC Name (4) */
|
|
proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_type_ac_name, tvb, offset+4, optlen, FALSE);
|
|
break;
|
|
|
|
case TYPE_CAPWAP_CONTROL_IPV4_ADDRESS: /* CAPWAP Control IPv4 Address (10) */
|
|
proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_type_capwap_control_ipv4, tvb, offset+4, 4, FALSE);
|
|
proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_type_capwap_control_wtp_count, tvb, offset+8, 2, FALSE);
|
|
break;
|
|
|
|
case TYPE_DISCOVERY_TYPE: /* Discovery Type (20) */
|
|
proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_type_discovery_type, tvb, offset+4, optlen, FALSE);
|
|
break;
|
|
|
|
case TYPE_WTP_BOARD_DATA: /* WTP Board Data (38) */
|
|
proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_type_wtp_board_data_vendor, tvb, offset+4, 4, FALSE);
|
|
offset += 8;
|
|
offset_end = offset + optlen -4;
|
|
while (offset < offset_end) {
|
|
offset += dissect_capwap_board_data(tvb, sub_msg_element_type_tree, offset);
|
|
}
|
|
break;
|
|
|
|
case TYPE_WTP_DESCRIPTOR: /* WTP Descriptor (39) */
|
|
proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_type_wtp_descriptor_max_radios, tvb, offset+4, 1, FALSE);
|
|
proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_type_wtp_descriptor_radio_in_use, tvb, offset+5, 1, FALSE);
|
|
|
|
number_encrypt = tvb_get_guint8(tvb,offset+6);
|
|
msg_element_type_item_flag = proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_type_wtp_descriptor_number_encrypt, tvb, offset+6, 1, FALSE);
|
|
sub_msg_element_type_flag_tree = proto_item_add_subtree(msg_element_type_item_flag, ett_capwap);
|
|
for (i=0; i < number_encrypt; i++) {
|
|
dissect_capwap_encryption_capabilities(tvb, sub_msg_element_type_flag_tree, offset+4+3+i*3);
|
|
}
|
|
|
|
offset_end = offset + optlen -4;
|
|
offset += 4 + 3 + number_encrypt * 3;
|
|
while (offset < offset_end) {
|
|
offset += dissect_capwap_wtp_descriptor(tvb, sub_msg_element_type_tree, offset);
|
|
}
|
|
break;
|
|
|
|
case TYPE_WTP_FRAME_TUNNEL_MODE: /* WTP Frame Tunnel Mode (41) */
|
|
msg_element_type_item_flag = proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_type_wtp_frame_tunnel_mode, tvb, offset+4, 1, FALSE);
|
|
sub_msg_element_type_flag_tree = proto_item_add_subtree(msg_element_type_item_flag, ett_capwap);
|
|
|
|
proto_tree_add_item(sub_msg_element_type_flag_tree, hf_capwap_msg_element_type_wtp_frame_tunnel_mode_n, tvb, offset+4, 1, FALSE);
|
|
proto_tree_add_item(sub_msg_element_type_flag_tree, hf_capwap_msg_element_type_wtp_frame_tunnel_mode_e, tvb, offset+4, 1, FALSE);
|
|
proto_tree_add_item(sub_msg_element_type_flag_tree, hf_capwap_msg_element_type_wtp_frame_tunnel_mode_l, tvb, offset+4, 1, FALSE);
|
|
proto_tree_add_item(sub_msg_element_type_flag_tree, hf_capwap_msg_element_type_wtp_frame_tunnel_mode_r, tvb, offset+4, 1, FALSE);
|
|
break;
|
|
|
|
case TYPE_WTP_MAC_TYPE: /* WTP MAC Type (44) */
|
|
proto_tree_add_item(sub_msg_element_type_tree, hf_capwap_msg_element_type_wtp_mac_type, tvb, offset+4, optlen, FALSE);
|
|
break;
|
|
|
|
default:
|
|
/* No Default Action */
|
|
break;
|
|
}
|
|
|
|
return 2+2+optlen;
|
|
}
|
|
|
|
/* Returns the number of bytes consumed by this option. */
|
|
static int
|
|
dissect_capwap_message_element(tvbuff_t *tvb, proto_tree *capwap_control_tree, guint offset)
|
|
{
|
|
guint plen = 0, offset_end;
|
|
proto_item *ti;
|
|
proto_tree *capwap_message_element_tree;
|
|
|
|
ti = proto_tree_add_item(capwap_control_tree, hf_capwap_message_element, tvb, offset, tvb_reported_length(tvb) - offset, FALSE);
|
|
capwap_message_element_tree = proto_item_add_subtree(ti, ett_capwap);
|
|
|
|
offset_end = tvb_reported_length(tvb);
|
|
|
|
while (offset+plen < offset_end) {
|
|
plen += dissect_capwap_message_element_type(tvb, capwap_message_element_tree, offset+plen);
|
|
}
|
|
|
|
return plen;
|
|
}
|
|
|
|
/* Returns the number of bytes consumed by this option. */
|
|
static int
|
|
dissect_capwap_control_header(tvbuff_t *tvb, proto_tree *capwap_control_tree, guint offset, packet_info *pinfo)
|
|
{
|
|
guint plen = 0;
|
|
proto_item *ti, *ti_flag;
|
|
proto_tree *capwap_control_header_tree;
|
|
proto_tree *capwap_control_msg_type_tree;
|
|
|
|
ti = proto_tree_add_item(capwap_control_tree, hf_capwap_control_header, tvb, offset, 8, FALSE);
|
|
capwap_control_header_tree = proto_item_add_subtree(ti, ett_capwap);
|
|
|
|
/* Message Type 32 bits */
|
|
ti_flag = proto_tree_add_item(capwap_control_header_tree, hf_capwap_control_header_msg_type, tvb, offset, 4, FALSE);
|
|
capwap_control_msg_type_tree = proto_item_add_subtree(ti_flag, ett_capwap);
|
|
|
|
proto_tree_add_item(capwap_control_msg_type_tree, hf_capwap_control_header_msg_type_enterprise_nbr, tvb, offset, 3, FALSE);
|
|
proto_tree_add_item(capwap_control_msg_type_tree, hf_capwap_control_header_msg_type_enterprise_specific, tvb, offset+3, 1, FALSE);
|
|
|
|
col_append_fstr(pinfo->cinfo, COL_INFO, " - %s",val_to_str(tvb_get_guint8(tvb, offset+3),message_type,"Unknown Message Type (0x%02x)"));
|
|
|
|
plen += 4;
|
|
/* Sequence 8 bits */
|
|
proto_tree_add_uint(capwap_control_header_tree, hf_capwap_control_header_seq_number, tvb, offset+plen, 1, tvb_get_guint8(tvb, offset));
|
|
plen += 1;
|
|
|
|
/* Message Element Length 16 bits */
|
|
proto_tree_add_item(capwap_control_header_tree, hf_capwap_control_header_msg_element_length, tvb, offset+plen, 2, FALSE);
|
|
plen += 2;
|
|
/* Flags 8 bits */
|
|
proto_tree_add_item(capwap_control_header_tree, hf_capwap_control_header_flags, tvb, offset+plen, 1, FALSE);
|
|
plen += 1;
|
|
return plen;
|
|
}
|
|
|
|
/* Returns the number of bytes consumed by this option. */
|
|
static int
|
|
dissect_capwap_header(tvbuff_t *tvb, proto_tree *capwap_control_tree, guint offset, guint8 *payload_type, guint8 *payload_wbid)
|
|
{
|
|
guint plen = 0;
|
|
proto_item *ti, *ti_flag;
|
|
proto_tree *capwap_header_tree;
|
|
proto_tree *capwap_header_flags_tree;
|
|
guint flags = 0;
|
|
|
|
ti = proto_tree_add_item(capwap_control_tree, hf_capwap_header, tvb, offset+plen, tvb_get_bits8(tvb, (offset+plen)*8, 5), FALSE);
|
|
capwap_header_tree = proto_item_add_subtree(ti, ett_capwap);
|
|
|
|
/* Header Length : 5 Bits */
|
|
proto_tree_add_uint(capwap_header_tree, hf_capwap_header_hlen, tvb, offset+plen, 1, tvb_get_bits8(tvb, (offset+plen)*8, 5));
|
|
/* Radio ID : 5 Bits */
|
|
proto_tree_add_uint(capwap_header_tree, hf_capwap_header_rid, tvb, offset+plen, 1, tvb_get_bits8(tvb, (offset+plen)*8+5, 5));
|
|
plen++;
|
|
/* Wireless Binding ID : 5 Bits */
|
|
proto_tree_add_uint(capwap_header_tree, hf_capwap_header_wbid, tvb, offset+plen, 1, tvb_get_bits8(tvb, (offset+plen)*8+10, 5));
|
|
|
|
/* Flags : 9 Bits */
|
|
flags = tvb_get_bits16(tvb, (offset+plen)*8+7, 9, 0);
|
|
ti_flag = proto_tree_add_uint_format(capwap_header_tree, hf_capwap_header_flags, tvb, offset+plen, 1, 0, "Header flags");
|
|
capwap_header_flags_tree = proto_item_add_subtree(ti_flag, ett_capwap);
|
|
|
|
proto_tree_add_boolean(capwap_header_flags_tree, hf_capwap_header_flags_t, tvb, offset+plen, 1, flags);
|
|
proto_tree_add_boolean(capwap_header_flags_tree, hf_capwap_header_flags_f, tvb, offset+plen, 1, flags);
|
|
proto_tree_add_boolean(capwap_header_flags_tree, hf_capwap_header_flags_l, tvb, offset+plen, 1, flags);
|
|
proto_tree_add_boolean(capwap_header_flags_tree, hf_capwap_header_flags_w, tvb, offset+plen, 1, flags);
|
|
proto_tree_add_boolean(capwap_header_flags_tree, hf_capwap_header_flags_m, tvb, offset+plen, 1, flags);
|
|
proto_tree_add_boolean(capwap_header_flags_tree, hf_capwap_header_flags_k, tvb, offset+plen, 1, flags);
|
|
proto_tree_add_boolean(capwap_header_flags_tree, hf_capwap_header_flags_r, tvb, offset+plen, 1, flags);
|
|
|
|
/* Type of Payload (for CAPWAP Data Packet) */
|
|
*payload_wbid = tvb_get_bits8(tvb, (offset+plen)*8+10, 5);
|
|
*payload_type = tvb_get_bits8(tvb, (offset+plen)*8+7,1);
|
|
|
|
plen += 2;
|
|
|
|
/* Fragment ID : 16 Bits */
|
|
proto_tree_add_item(capwap_header_tree, hf_capwap_header_fragment_id, tvb, offset+plen, 2, FALSE);
|
|
plen += 2;
|
|
|
|
/* Fragment offset : 13 Bits */
|
|
proto_tree_add_uint(capwap_header_tree, hf_capwap_header_fragment_offset, tvb, offset+plen, 2, tvb_get_bits16(tvb, (offset+plen)*8, 13, 0));
|
|
|
|
/* Reserved 3 Bits */
|
|
proto_tree_add_uint(capwap_header_tree, hf_capwap_header_reserved, tvb, offset+plen+1, 1, tvb_get_bits8(tvb, (offset+plen)*8+13, 3));
|
|
plen += 2;
|
|
return plen;
|
|
}
|
|
|
|
/* Returns the number of bytes consumed by this option. */
|
|
static int
|
|
dissect_capwap_preamble(tvbuff_t *tvb, proto_tree *capwap_control_tree, guint offset, guint8 *type_header)
|
|
{
|
|
guint plen = 0;
|
|
proto_item *ti;
|
|
proto_tree *capwap_preamble_tree;
|
|
|
|
ti = proto_tree_add_item(capwap_control_tree, hf_capwap_preamble, tvb, offset+plen, -1, FALSE);
|
|
capwap_preamble_tree = proto_item_add_subtree(ti, ett_capwap);
|
|
|
|
proto_tree_add_uint(capwap_preamble_tree, hf_capwap_preamble_version, tvb, offset+plen, 1, hi_nibble(tvb_get_guint8(tvb, offset+plen)));
|
|
proto_tree_add_uint(capwap_preamble_tree, hf_capwap_preamble_type, tvb, offset+plen, 1, lo_nibble(tvb_get_guint8(tvb, offset+plen)));
|
|
*type_header = lo_nibble(tvb_get_guint8(tvb, offset+plen));
|
|
plen++;
|
|
/* DTLS Header ? */
|
|
if (*type_header == 1) {
|
|
proto_tree_add_item(capwap_preamble_tree, hf_capwap_preamble_reserved, tvb, offset+plen, 3, FALSE);
|
|
plen +=3;
|
|
}
|
|
proto_item_set_len(ti, plen);
|
|
return plen;
|
|
}
|
|
|
|
/* Code to actually dissect the packets */
|
|
static void
|
|
dissect_capwap_control(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
|
|
{
|
|
/* Set up structures needed to add the protocol subtree and manage it */
|
|
proto_item *ti;
|
|
proto_tree *capwap_control_tree;
|
|
guint offset = 0;
|
|
tvbuff_t *next_tvb;
|
|
guint8 type_header;
|
|
guint8 payload_type;
|
|
guint8 payload_wbid;
|
|
|
|
/* Make entries in Protocol column and Info column on summary display */
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL, "CAPWAP");
|
|
col_set_str(pinfo->cinfo, COL_INFO, "CAPWAP-Control");
|
|
|
|
ti = proto_tree_add_item(tree, proto_capwap, tvb, 0, -1, FALSE);
|
|
capwap_control_tree = proto_item_add_subtree(ti, ett_capwap);
|
|
|
|
/* CAPWAP Preamble */
|
|
|
|
offset += dissect_capwap_preamble(tvb, capwap_control_tree, offset, &type_header);
|
|
|
|
if (type_header == 1) {
|
|
next_tvb = tvb_new_subset (tvb, offset, -1, -1);
|
|
call_dissector(dtls_handle, next_tvb, pinfo, tree);
|
|
return;
|
|
}
|
|
|
|
/* CAPWAP Header */
|
|
|
|
offset += dissect_capwap_header(tvb, capwap_control_tree, offset, &payload_type, &payload_wbid);
|
|
|
|
/* CAPWAP Control Header */
|
|
|
|
offset += dissect_capwap_control_header(tvb, capwap_control_tree, offset, pinfo);
|
|
|
|
/* CAPWAP Message Element */
|
|
|
|
offset += dissect_capwap_message_element(tvb, capwap_control_tree, offset);
|
|
|
|
}
|
|
|
|
/* Code to actually dissect the packets */
|
|
static void
|
|
dissect_capwap_data(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
|
|
{
|
|
|
|
/* Set up structures needed to add the protocol subtree and manage it */
|
|
proto_item *ti;
|
|
proto_tree *capwap_data_tree;
|
|
guint offset = 0;
|
|
tvbuff_t *next_tvb;
|
|
guint8 type_header;
|
|
guint8 payload_type;
|
|
guint8 payload_wbid;
|
|
|
|
/* Make entries in Protocol column and Info column on summary display */
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL, "CAPWAP");
|
|
col_set_str(pinfo->cinfo, COL_INFO, "CAPWAP-Data");
|
|
|
|
ti = proto_tree_add_item(tree, proto_capwap, tvb, 0, -1, FALSE);
|
|
capwap_data_tree = proto_item_add_subtree(ti, ett_capwap);
|
|
|
|
/* CAPWAP Preamble */
|
|
|
|
offset += dissect_capwap_preamble(tvb, capwap_data_tree, offset, &type_header);
|
|
|
|
if (type_header == 1) {
|
|
next_tvb = tvb_new_subset (tvb, offset, -1, -1);
|
|
call_dissector(dtls_handle, next_tvb, pinfo, tree);
|
|
return;
|
|
}
|
|
|
|
/* CAPWAP Header */
|
|
|
|
offset += dissect_capwap_header(tvb, capwap_data_tree, offset, &payload_type, &payload_wbid);
|
|
|
|
/* CAPWAP Data Payload */
|
|
|
|
next_tvb = tvb_new_subset (tvb, offset, -1, -1);
|
|
|
|
if (payload_type == 0) {
|
|
/* IEEE 802.3 Frame */
|
|
call_dissector(ieee8023_handle, next_tvb, pinfo, tree);
|
|
} else {
|
|
switch (payload_wbid) {
|
|
case 1: /* IEEE 802.11 */
|
|
call_dissector(ieee80211_handle, next_tvb, pinfo, tree);
|
|
break;
|
|
default: /* Unknown Data */
|
|
call_dissector(data_handle, next_tvb, pinfo, tree);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
void
|
|
proto_register_capwap_control(void)
|
|
{
|
|
module_t *capwap_module;
|
|
|
|
static hf_register_info hf[] = {
|
|
/* Preamble */
|
|
{ &hf_capwap_preamble,
|
|
{ "Preamble", "capwap.preamble",
|
|
FT_NONE, BASE_NONE, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
{ &hf_capwap_preamble_version,
|
|
{ "Version", "capwap.preamble.version",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
"Version of CAPWAP", HFILL }},
|
|
{ &hf_capwap_preamble_type,
|
|
{ "Type", "capwap.preamble.type",
|
|
FT_UINT8, BASE_DEC, VALS(type_header_vals), 0x0,
|
|
"Type of Payload", HFILL }},
|
|
{ &hf_capwap_preamble_reserved,
|
|
{ "Reserved", "capwap.preamble.reserved",
|
|
FT_UINT24, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
/* CAPWAP Header */
|
|
{ &hf_capwap_header,
|
|
{ "Header", "capwap.header",
|
|
FT_NONE, BASE_NONE, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
{ &hf_capwap_header_hlen,
|
|
{ "Header Length", "capwap.header.length",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
{ &hf_capwap_header_rid,
|
|
{ "Radio ID", "capwap.header.rid",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
{ &hf_capwap_header_wbid,
|
|
{ "Wireless Binding ID", "capwap.header.wbid",
|
|
FT_UINT8, BASE_DEC, VALS(type_wbid), 0x0,
|
|
NULL, HFILL }},
|
|
{ &hf_capwap_header_flags,
|
|
{ "Header Flags", "capwap.header.flags",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
{ &hf_capwap_header_flags_t,
|
|
{ "Payload Type", "capwap.header.flags.t",
|
|
FT_BOOLEAN, 9, TFS(&flag_type_t), 0x100,
|
|
NULL, HFILL }},
|
|
{ &hf_capwap_header_flags_f,
|
|
{ "Fragment", "capwap.header.flags.f",
|
|
FT_BOOLEAN, 9, TFS(&flag_type_f), 0x80,
|
|
NULL, HFILL }},
|
|
{ &hf_capwap_header_flags_l,
|
|
{ "Last Fragment", "capwap.header.flags.l",
|
|
FT_BOOLEAN, 9, TFS(&flag_type_l), 0x40,
|
|
NULL, HFILL }},
|
|
{ &hf_capwap_header_flags_w,
|
|
{ "Wireless header", "capwap.header.flags.w",
|
|
FT_BOOLEAN, 9, TFS(&flag_type_w), 0x20,
|
|
NULL, HFILL }},
|
|
{ &hf_capwap_header_flags_m,
|
|
{ "Radio MAC header", "capwap.header.flags.m",
|
|
FT_BOOLEAN, 9, TFS(&flag_type_m), 0x10,
|
|
NULL, HFILL }},
|
|
{ &hf_capwap_header_flags_k,
|
|
{ "Keep-Alive", "capwap.header.flags.k",
|
|
FT_BOOLEAN, 9, TFS(&flag_type_k), 0x08,
|
|
NULL, HFILL }},
|
|
{ &hf_capwap_header_flags_r,
|
|
{ "Reserved", "capwap.header.flags.r",
|
|
FT_BOOLEAN, 9, TFS(&tfs_set_notset), 0x07,
|
|
NULL, HFILL }},
|
|
{ &hf_capwap_header_fragment_id,
|
|
{ "Fragment ID", "capwap.header.fragment.id",
|
|
FT_UINT16, BASE_DEC, NULL, 0x00,
|
|
NULL, HFILL }},
|
|
{ &hf_capwap_header_fragment_offset,
|
|
{ "Fragment Offset", "capwap.header.fragment.offset",
|
|
FT_UINT16, BASE_DEC, NULL, 0x00,
|
|
NULL, HFILL }},
|
|
{ &hf_capwap_header_reserved,
|
|
{ "Reserved", "capwap.header.fragment.reserved",
|
|
FT_UINT8, BASE_DEC, NULL, 0x00,
|
|
NULL, HFILL }},
|
|
/* CAPWAP Control Header Message */
|
|
|
|
{ &hf_capwap_control_header,
|
|
{ "Control Header", "capwap.control.header",
|
|
FT_NONE, BASE_NONE, NULL, 0x00,
|
|
NULL, HFILL }},
|
|
{ &hf_capwap_control_header_msg_type,
|
|
{ "Message Type", "capwap.control.header.message_type",
|
|
FT_UINT32, BASE_DEC, NULL, 0x00,
|
|
NULL, HFILL }},
|
|
{ &hf_capwap_control_header_msg_type_enterprise_nbr,
|
|
{ "Message Type (Enterprise Number)", "capwap.control.header.message_type.enterprise_number",
|
|
FT_UINT32, BASE_DEC, VALS(sminmpec_values), 0x00,
|
|
NULL, HFILL }},
|
|
{ &hf_capwap_control_header_msg_type_enterprise_specific,
|
|
{ "Message Type (Enterprise Specific)", "capwap.control.header.message_type.enterprise_specific",
|
|
FT_UINT8, BASE_DEC, VALS(message_type), 0x00,
|
|
NULL, HFILL }},
|
|
{ &hf_capwap_control_header_seq_number,
|
|
{ "Sequence Number", "capwap.control.header.sequence_number",
|
|
FT_UINT8, BASE_DEC, NULL, 0x00,
|
|
NULL, HFILL }},
|
|
{ &hf_capwap_control_header_msg_element_length,
|
|
{ "Message Element Length", "capwap.control.header.message_element_length",
|
|
FT_UINT16, BASE_DEC, NULL, 0x00,
|
|
NULL, HFILL }},
|
|
{ &hf_capwap_control_header_flags,
|
|
{ "Flags", "capwap.control.header.flags",
|
|
FT_UINT8, BASE_DEC, NULL, 0x00,
|
|
NULL, HFILL }},
|
|
|
|
/* CAPWAP Protocol Message Elements */
|
|
|
|
{ &hf_capwap_message_element,
|
|
{ "Message Element", "capwap.message_element",
|
|
FT_NONE, BASE_NONE, NULL, 0x00,
|
|
NULL, HFILL }},
|
|
{ &hf_capwap_msg_element_type,
|
|
{ "Type", "capwap.message_element.type",
|
|
FT_UINT16, BASE_DEC, VALS(message_element_type_vals), 0x00,
|
|
"CAPWAP Message Element type", HFILL }},
|
|
{ &hf_capwap_msg_element_length,
|
|
{ "Length", "capwap.message_element.length",
|
|
FT_UINT16, BASE_DEC, NULL, 0x00,
|
|
"CAPWAP Message Element length", HFILL }},
|
|
{ &hf_capwap_msg_element_value,
|
|
{ "Value", "capwap.message_element.value",
|
|
FT_BYTES, BASE_NONE, NULL, 0x00,
|
|
"CAPWAP Message Element value", HFILL }},
|
|
|
|
/* CAPWAP Protocol Message Element Type */
|
|
|
|
/* AC Descriptor */
|
|
{ &hf_capwap_msg_element_type_ac_descriptor_stations,
|
|
{ "Stations", "capwap.control.message_element.ac_descriptor.stations",
|
|
FT_UINT16, BASE_DEC, NULL, 0x00,
|
|
NULL, HFILL }},
|
|
{ &hf_capwap_msg_element_type_ac_descriptor_limit,
|
|
{ "Limit Stations", "capwap.control.message_element.ac_descriptor.limit",
|
|
FT_UINT16, BASE_DEC, NULL, 0x00,
|
|
NULL, HFILL }},
|
|
{ &hf_capwap_msg_element_type_ac_descriptor_active_wtp,
|
|
{ "Active WTPs", "capwap.control.message_element.ac_descriptor.active_wtp",
|
|
FT_UINT16, BASE_DEC, NULL, 0x00,
|
|
NULL, HFILL }},
|
|
{ &hf_capwap_msg_element_type_ac_descriptor_max_wtp,
|
|
{ "Max WTPs", "capwap.control.message_element.ac_descriptor.max_wtp",
|
|
FT_UINT16, BASE_DEC, NULL, 0x00,
|
|
NULL, HFILL }},
|
|
/* AC Descriptor Security Flags... */
|
|
{ &hf_capwap_msg_element_type_ac_descriptor_security,
|
|
{ "Security Flags", "capwap.control.message_element.ac_descriptor.security",
|
|
FT_NONE, BASE_NONE, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
{ &hf_capwap_msg_element_type_ac_descriptor_security_s,
|
|
{ "AC supports the pre-shared", "capwap.control.message_element.ac_descriptor.security.s",
|
|
FT_BOOLEAN, 8, TFS(&tfs_true_false), 0x04,
|
|
NULL, HFILL }},
|
|
{ &hf_capwap_msg_element_type_ac_descriptor_security_x,
|
|
{ "AC supports X.509 Certificate", "capwap.control.message_element.ac_descriptor.security.x",
|
|
FT_BOOLEAN, 8, TFS(&tfs_true_false), 0x02,
|
|
NULL, HFILL }},
|
|
{ &hf_capwap_msg_element_type_ac_descriptor_security_r,
|
|
{ "Reserved", "capwap.control.message_element.ac_descriptor.security.r",
|
|
FT_BOOLEAN, 8, TFS(&tfs_set_notset), 0xF9,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_capwap_msg_element_type_ac_descriptor_rmac_field,
|
|
{ "R-MAC Field", "capwap.control.message_element.ac_descriptor.rmac_field",
|
|
FT_UINT8, BASE_DEC, VALS(rmac_field_vals), 0x00,
|
|
NULL, HFILL }},
|
|
{ &hf_capwap_msg_element_type_ac_descriptor_reserved,
|
|
{ "Reserved", "capwap.control.message_element.ac_descriptor.reserved",
|
|
FT_UINT8, BASE_DEC, NULL, 0x00,
|
|
NULL, HFILL }},
|
|
/* AC Descriptor DTLS Policy Flags... */
|
|
{ &hf_capwap_msg_element_type_ac_descriptor_dtls_policy,
|
|
{ "DTLS Policy Flags", "capwap.control.message_element.ac_descriptor.dtls_policy",
|
|
FT_NONE, BASE_NONE, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
{ &hf_capwap_msg_element_type_ac_descriptor_dtls_policy_d,
|
|
{ "DTLS-Enabled Data Channel Supported", "capwap.control.message_element.ac_descriptor.dtls_policy.d",
|
|
FT_BOOLEAN, 8, TFS(&tfs_true_false), 0x04,
|
|
NULL, HFILL }},
|
|
{ &hf_capwap_msg_element_type_ac_descriptor_dtls_policy_c,
|
|
{ "Clear Text Data Channel Supported", "capwap.control.message_element.ac_descriptor.dtls_policy.c",
|
|
FT_BOOLEAN, 8, TFS(&tfs_true_false), 0x02,
|
|
NULL, HFILL }},
|
|
{ &hf_capwap_msg_element_type_ac_descriptor_dtls_policy_r,
|
|
{ "Reserved", "capwap.control.message_element.ac_descriptor.dtls_policy.r",
|
|
FT_BOOLEAN, 8, TFS(&tfs_set_notset), 0xF9,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_capwap_msg_element_type_ac_information_vendor,
|
|
{ "AC Information Vendor", "capwap.control.message_element.ac_information.vendor",
|
|
FT_UINT32, BASE_DEC, VALS(sminmpec_values), 0x00,
|
|
NULL, HFILL }},
|
|
{ &hf_capwap_msg_element_type_ac_information_type,
|
|
{ "AC Information Type", "capwap.control.message_element.ac_information.type",
|
|
FT_UINT16, BASE_DEC, VALS(ac_information_type_vals), 0x00,
|
|
NULL, HFILL }},
|
|
{ &hf_capwap_msg_element_type_ac_information_length,
|
|
{ "AC Information Length", "capwap.control.message_element.ac_information.length",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_capwap_msg_element_type_ac_information_value,
|
|
{ "AC Information Value", "capwap.control.message_element.ac_information.value",
|
|
FT_BYTES, BASE_NONE, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
{ &hf_capwap_msg_element_type_ac_information_hardware_version,
|
|
{ "AC Hardware Version", "capwap.control.message_element.ac_information.hardware_version",
|
|
FT_STRING, BASE_NONE, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
{ &hf_capwap_msg_element_type_ac_information_software_version,
|
|
{ "AC Software Version", "capwap.control.message_element.ac_information.software_version",
|
|
FT_STRING, BASE_NONE, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
|
|
/* CAPWAP Control IPvX Address*/
|
|
{ &hf_capwap_msg_element_type_capwap_control_ipv4,
|
|
{ "Control IP Address", "capwap.control.message_element.message_element.capwap_control_ipv4",
|
|
FT_IPv4, BASE_NONE, NULL, 0x00,
|
|
NULL, HFILL }},
|
|
{ &hf_capwap_msg_element_type_capwap_control_wtp_count,
|
|
{ "Control WTP Count", "capwap.control.message_element.capwap_control_wtp_count",
|
|
FT_UINT16, BASE_DEC, NULL, 0x00,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_capwap_msg_element_type_ac_name,
|
|
{ "AC Name", "capwap.control.message_element.ac_name",
|
|
FT_STRING, BASE_NONE, NULL, 0x00,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_capwap_msg_element_type_discovery_type,
|
|
{ "Discovery Type", "capwap.control.message_element.discovery_type",
|
|
FT_UINT8, BASE_DEC, VALS(discovery_type_vals), 0x00,
|
|
NULL, HFILL }},
|
|
{ &hf_capwap_msg_element_type_wtp_board_data_vendor,
|
|
{ "WTP Board Data Vendor", "capwap.control.message_element.wtp_board_data.vendor",
|
|
FT_UINT32, BASE_DEC, VALS(sminmpec_values), 0x00,
|
|
NULL, HFILL }},
|
|
{ &hf_capwap_msg_element_type_wtp_board_data_type,
|
|
{ "Board Data Type", "capwap.control.message_element.wtp_board_data.type",
|
|
FT_UINT16, BASE_DEC, VALS(board_data_type_vals), 0x00,
|
|
NULL, HFILL }},
|
|
{ &hf_capwap_msg_element_type_wtp_board_data_length,
|
|
{ "Board Data Length", "capwap.control.message_element.wtp_board_data.length",
|
|
FT_UINT16, BASE_DEC, NULL, 0x00,
|
|
NULL, HFILL }},
|
|
{ &hf_capwap_msg_element_type_wtp_board_data_value,
|
|
{ "Board Data Value", "capwap.control.message_element.wtp_board_data.value",
|
|
FT_BYTES, BASE_NONE, NULL, 0x00,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_capwap_msg_element_type_wtp_board_data_wtp_model_number,
|
|
{ "WTP Model Number", "capwap.control.message_element.wtp_board_data.wtp_model_number",
|
|
FT_STRING, BASE_NONE, NULL, 0x00,
|
|
NULL, HFILL }},
|
|
{ &hf_capwap_msg_element_type_wtp_board_data_wtp_serial_number,
|
|
{ "WTP Serial Number", "capwap.control.message_element.wtp_board_data.wtp_serial_number",
|
|
FT_STRING, BASE_NONE, NULL, 0x00,
|
|
NULL, HFILL }},
|
|
{ &hf_capwap_msg_element_type_wtp_board_data_wtp_board_id,
|
|
{ "WTP Board ID", "capwap.control.message_element.wtp_board_data.wtp_board_id",
|
|
FT_STRING, BASE_NONE, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
{ &hf_capwap_msg_element_type_wtp_board_data_wtp_board_revision,
|
|
{ "WTP Board Revision", "capwap.control.message_element.wtp_board_data.wtp_board_revision",
|
|
FT_STRING, BASE_NONE, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
{ &hf_capwap_msg_element_type_wtp_board_data_base_mac_address,
|
|
{ "Base Mac Address", "capwap.control.message_element.wtp_board_data.base_mac_address",
|
|
FT_ETHER, BASE_NONE, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_capwap_msg_element_type_wtp_descriptor_max_radios,
|
|
{ "Max Radios", "capwap.control.message_element.wtp_descriptor.max_radios",
|
|
FT_UINT8, BASE_DEC, NULL, 0x00,
|
|
NULL, HFILL }},
|
|
{ &hf_capwap_msg_element_type_wtp_descriptor_radio_in_use,
|
|
{ "Radio in use", "capwap.control.message_element.wtp_descriptor.radio_in_use",
|
|
FT_UINT8, BASE_DEC, NULL, 0x00,
|
|
NULL, HFILL }},
|
|
{ &hf_capwap_msg_element_type_wtp_descriptor_number_encrypt,
|
|
{ "Encryption Capabilities (Number)", "capwap.control.message_element.wtp_descriptor.number_encrypt",
|
|
FT_UINT8, BASE_DEC, NULL, 0x00,
|
|
NULL, HFILL }},
|
|
{ &hf_capwap_msg_element_type_wtp_descriptor_encrypt_reserved,
|
|
{ "Reserved (Encrypt)", "capwap.control.message_element.wtp_descriptor.encrypt_reserved",
|
|
FT_UINT8, BASE_DEC, NULL, 0x00,
|
|
NULL, HFILL }},
|
|
{ &hf_capwap_msg_element_type_wtp_descriptor_encrypt_wbid,
|
|
{ "Encrypt WBID", "capwap.control.message_element.wtp_descriptor.encrypt_wbid",
|
|
FT_UINT8, BASE_DEC, VALS(type_wbid), 0x00,
|
|
NULL, HFILL }},
|
|
{ &hf_capwap_msg_element_type_wtp_descriptor_encrypt_capabilities,
|
|
{ "Encryption Capabilities", "capwap.control.message_element.wtp_descriptor.encrypt_capabilities",
|
|
FT_UINT16, BASE_DEC, NULL, 0x00,
|
|
NULL, HFILL }},
|
|
{ &hf_capwap_msg_element_type_wtp_descriptor_vendor,
|
|
{ "WTP Descriptor Vendor", "capwap.control.message_element.wtp_descriptor.vendor",
|
|
FT_UINT32, BASE_DEC, VALS(sminmpec_values), 0x00,
|
|
NULL, HFILL }},
|
|
{ &hf_capwap_msg_element_type_wtp_descriptor_type,
|
|
{ "Descriptor Type", "capwap.control.message_element.wtp_descriptor.type",
|
|
FT_UINT16, BASE_DEC, VALS(wtp_descriptor_type_vals), 0x0,
|
|
NULL, HFILL }},
|
|
{ &hf_capwap_msg_element_type_wtp_descriptor_length,
|
|
{ "Descriptor Length", "capwap.control.message_element.wtp_descriptor.length",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
{ &hf_capwap_msg_element_type_wtp_descriptor_value,
|
|
{ "Descriptor Value", "capwap.control.message_element.wtp_descriptor.value",
|
|
FT_BYTES, BASE_NONE, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
{ &hf_capwap_msg_element_type_wtp_descriptor_hardware_version,
|
|
{ "WTP Hardware Version", "capwap.control.message_element.wtp_descriptor.hardware_version",
|
|
FT_STRING, BASE_NONE, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
{ &hf_capwap_msg_element_type_wtp_descriptor_active_software_version,
|
|
{ "WTP Active Software Version", "capwap.control.message_element.wtp_descriptor.active_software_version",
|
|
FT_STRING, BASE_NONE, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
{ &hf_capwap_msg_element_type_wtp_descriptor_boot_version,
|
|
{ "WTP Boot Version", "capwap.control.message_element.wtp_descriptor.boot_version",
|
|
FT_STRING, BASE_NONE, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
{ &hf_capwap_msg_element_type_wtp_descriptor_other_software_version,
|
|
{ "WTP Other Software Version", "capwap.control.message_element.wtp_descriptor.other_software_version",
|
|
FT_STRING, BASE_NONE, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_capwap_msg_element_type_wtp_frame_tunnel_mode,
|
|
{ "WTP Frame Tunnel Mode", "capwap.control.message_element.wtp_frame_tunnel_mode",
|
|
FT_NONE, BASE_NONE, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
{ &hf_capwap_msg_element_type_wtp_frame_tunnel_mode_n,
|
|
{ "Native Frame Tunnel Mode", "capwap.control.message_element.wtp_frame_tunnel_mode.n",
|
|
FT_BOOLEAN, 8, TFS(&tfs_true_false), 0x08,
|
|
NULL, HFILL }},
|
|
{ &hf_capwap_msg_element_type_wtp_frame_tunnel_mode_e,
|
|
{ "802.3 Frame Tunnel Mode", "capwap.control.message_element.wtp_frame_tunnel_mode.e",
|
|
FT_BOOLEAN, 8, TFS(&tfs_true_false), 0x04,
|
|
NULL, HFILL }},
|
|
{ &hf_capwap_msg_element_type_wtp_frame_tunnel_mode_l,
|
|
{ "Local Bridging", "capwap.control.message_element.wtp_frame_tunnel_mode.l",
|
|
FT_BOOLEAN, 8, TFS(&tfs_true_false), 0x02,
|
|
NULL, HFILL }},
|
|
{ &hf_capwap_msg_element_type_wtp_frame_tunnel_mode_r,
|
|
{ "Reserved", "capwap.control.message_element.wtp_frame_tunnel_mode.r",
|
|
FT_BOOLEAN, 8, TFS(&tfs_set_notset), 0xF1,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_capwap_msg_element_type_wtp_mac_type,
|
|
{ "WTP MAC Type", "capwap.control.message_element.wtp_mac_type",
|
|
FT_UINT8, BASE_DEC, VALS(wtp_mac_vals), 0x0,
|
|
"The MAC mode of operation supported by the WTP", HFILL }}
|
|
};
|
|
|
|
/* Setup protocol subtree array */
|
|
static gint *ett[] = {
|
|
&ett_capwap
|
|
};
|
|
|
|
/* Register the protocol name and description */
|
|
proto_capwap = proto_register_protocol("Control And Provisioning of Wireless Access Points", "CAPWAP", "capwap");
|
|
|
|
/* Required function calls to register the header fields and subtrees used */
|
|
proto_register_field_array(proto_capwap, hf, array_length(hf));
|
|
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
|
|
/* Register preferences module (See Section 2.6 for more on preferences) */
|
|
capwap_module = prefs_register_protocol(proto_capwap, proto_reg_handoff_capwap);
|
|
|
|
prefs_register_uint_preference(capwap_module, "udp.port.control", "CAPWAP Control UDP Port",
|
|
"Set the port for CAPWAP Control messages (if other than the default of 5246)",
|
|
10, &global_capwap_control_udp_port);
|
|
|
|
prefs_register_uint_preference(capwap_module, "udp.port.data", "CAPWAP Data UDP Port",
|
|
"Set the port for CAPWAP Data messages (if other than the default of 5247)",
|
|
10, &global_capwap_data_udp_port);
|
|
|
|
}
|
|
|
|
void
|
|
proto_reg_handoff_capwap(void)
|
|
{
|
|
static gboolean inited = FALSE;
|
|
static dissector_handle_t capwap_control_handle, capwap_data_handle;
|
|
static guint capwap_control_udp_port, capwap_data_udp_port;
|
|
|
|
if (!inited) {
|
|
capwap_control_handle = create_dissector_handle(dissect_capwap_control, proto_capwap);
|
|
capwap_data_handle = create_dissector_handle(dissect_capwap_data, proto_capwap);
|
|
dtls_handle = find_dissector("dtls");
|
|
ieee8023_handle = find_dissector("eth_withoutfcs");
|
|
ieee80211_handle = find_dissector("wlan");
|
|
data_handle = find_dissector("data");
|
|
inited = TRUE;
|
|
} else {
|
|
dissector_delete("udp.port", capwap_control_udp_port, capwap_control_handle);
|
|
dissector_delete("udp.port", capwap_data_udp_port, capwap_data_handle);
|
|
}
|
|
dissector_add("udp.port", global_capwap_control_udp_port, capwap_control_handle);
|
|
dissector_add("udp.port", global_capwap_data_udp_port, capwap_data_handle);
|
|
|
|
capwap_control_udp_port = global_capwap_control_udp_port;
|
|
capwap_data_udp_port = global_capwap_data_udp_port;
|
|
}
|
|
|