/* packet-capwap.c * Routines for CAPWAP dissection (RFC 5415) * Copyright 2009, Alexis La Goutte * * $Id$ * * Wireshark - Network traffic analyzer * By Gerald Combs * Copyright 1998 Gerald Combs * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ #ifdef HAVE_CONFIG_H # include "config.h" #endif #include #include #include #include #include #include #define UDP_PORT_CAPWAP_CONTROL 5246 #define UDP_PORT_CAPWAP_DATA 5247 static guint global_capwap_control_udp_port = UDP_PORT_CAPWAP_CONTROL; static guint global_capwap_data_udp_port = UDP_PORT_CAPWAP_DATA; /* TODO LIST ! * add support of optional Header (Radio Mac/Wireless Specific Information : Section 4.3) * add decryption of DLTS Message * add support of all Messages Element Type */ /* Forward declaration we need below */ void proto_reg_handoff_capwap(void); /* Initialize the protocol and registered fields */ static int proto_capwap = -1; static int hf_capwap_preamble = -1; static int hf_capwap_preamble_version = -1; static int hf_capwap_preamble_type = -1; static int hf_capwap_preamble_reserved = -1; static int hf_capwap_header = -1; static int hf_capwap_header_hlen = -1; static int hf_capwap_header_rid = -1; static int hf_capwap_header_wbid = -1; static int hf_capwap_header_flags = -1; static int hf_capwap_header_flags_t = -1; static int hf_capwap_header_flags_f = -1; static int hf_capwap_header_flags_l = -1; static int hf_capwap_header_flags_w = -1; static int hf_capwap_header_flags_m = -1; static int hf_capwap_header_flags_k = -1; static int hf_capwap_header_flags_r = -1; static int hf_capwap_header_fragment_id = -1; static int hf_capwap_header_fragment_offset = -1; static int hf_capwap_header_reserved = -1; static int hf_capwap_control_header = -1; static int hf_capwap_control_header_msg_type = -1; static int hf_capwap_control_header_msg_type_enterprise_nbr = -1; static int hf_capwap_control_header_msg_type_enterprise_specific = -1; static int hf_capwap_control_header_seq_number = -1; static int hf_capwap_control_header_flags = -1; static int hf_capwap_control_header_msg_element_length = -1; static int hf_capwap_message_element = -1; static int hf_capwap_msg_element_type = -1; static int hf_capwap_msg_element_length = -1; static int hf_capwap_msg_element_value = -1; static int hf_capwap_msg_element_type_ac_descriptor_stations = -1; static int hf_capwap_msg_element_type_ac_descriptor_limit = -1; static int hf_capwap_msg_element_type_ac_descriptor_active_wtp = -1; static int hf_capwap_msg_element_type_ac_descriptor_max_wtp = -1; /* AC Descriptor Security Flags... */ static int hf_capwap_msg_element_type_ac_descriptor_security = -1; static int hf_capwap_msg_element_type_ac_descriptor_security_s = -1; static int hf_capwap_msg_element_type_ac_descriptor_security_x = -1; static int hf_capwap_msg_element_type_ac_descriptor_security_r = -1; static int hf_capwap_msg_element_type_ac_descriptor_rmac_field = -1; static int hf_capwap_msg_element_type_ac_descriptor_reserved = -1; /* AC Descriptor DTLS Policy Flags... */ static int hf_capwap_msg_element_type_ac_descriptor_dtls_policy = -1; static int hf_capwap_msg_element_type_ac_descriptor_dtls_policy_d = -1; static int hf_capwap_msg_element_type_ac_descriptor_dtls_policy_c = -1; static int hf_capwap_msg_element_type_ac_descriptor_dtls_policy_r = -1; static int hf_capwap_msg_element_type_ac_information_vendor = -1; static int hf_capwap_msg_element_type_ac_information_type = -1; static int hf_capwap_msg_element_type_ac_information_length = -1; static int hf_capwap_msg_element_type_ac_information_value = -1; static int hf_capwap_msg_element_type_ac_information_hardware_version = -1; static int hf_capwap_msg_element_type_ac_information_software_version = -1; static int hf_capwap_msg_element_type_ac_name = -1; static int hf_capwap_msg_element_type_capwap_control_ipv4 = -1; static int hf_capwap_msg_element_type_capwap_control_wtp_count = -1; static int hf_capwap_msg_element_type_discovery_type = -1; static int hf_capwap_msg_element_type_wtp_board_data_vendor = -1; static int hf_capwap_msg_element_type_wtp_board_data_type = -1; static int hf_capwap_msg_element_type_wtp_board_data_length = -1; static int hf_capwap_msg_element_type_wtp_board_data_value = -1; static int hf_capwap_msg_element_type_wtp_board_data_wtp_model_number = -1; static int hf_capwap_msg_element_type_wtp_board_data_wtp_serial_number = -1; static int hf_capwap_msg_element_type_wtp_board_data_wtp_board_id = -1; static int hf_capwap_msg_element_type_wtp_board_data_wtp_board_revision = -1; static int hf_capwap_msg_element_type_wtp_board_data_base_mac_address = -1; static int hf_capwap_msg_element_type_wtp_descriptor_max_radios = -1; static int hf_capwap_msg_element_type_wtp_descriptor_radio_in_use = -1; static int hf_capwap_msg_element_type_wtp_descriptor_number_encrypt = -1; static int hf_capwap_msg_element_type_wtp_descriptor_encrypt_reserved = -1; static int hf_capwap_msg_element_type_wtp_descriptor_encrypt_wbid = -1; static int hf_capwap_msg_element_type_wtp_descriptor_encrypt_capabilities = -1; static int hf_capwap_msg_element_type_wtp_descriptor_vendor = -1; static int hf_capwap_msg_element_type_wtp_descriptor_type = -1; static int hf_capwap_msg_element_type_wtp_descriptor_length = -1; static int hf_capwap_msg_element_type_wtp_descriptor_value = -1; static int hf_capwap_msg_element_type_wtp_descriptor_hardware_version = -1; static int hf_capwap_msg_element_type_wtp_descriptor_active_software_version = -1; static int hf_capwap_msg_element_type_wtp_descriptor_boot_version = -1; static int hf_capwap_msg_element_type_wtp_descriptor_other_software_version = -1; static int hf_capwap_msg_element_type_wtp_frame_tunnel_mode = -1; static int hf_capwap_msg_element_type_wtp_frame_tunnel_mode_n = -1; static int hf_capwap_msg_element_type_wtp_frame_tunnel_mode_e = -1; static int hf_capwap_msg_element_type_wtp_frame_tunnel_mode_l = -1; static int hf_capwap_msg_element_type_wtp_frame_tunnel_mode_r = -1; static int hf_capwap_msg_element_type_wtp_mac_type = -1; static dissector_handle_t dtls_handle; static dissector_handle_t ieee8023_handle; static dissector_handle_t ieee80211_handle; static dissector_handle_t data_handle; /* Initialize the subtree pointers */ static gint ett_capwap = -1; /* ************************************************************************* */ /* Header Type */ /* ************************************************************************* */ static const value_string type_header_vals[] = { { 0, "CAPWAP Header" }, { 1, "CAPWAP DTLS Header" }, { 0, NULL } }; /* ************************************************************************* */ /* Wireless Binding IDentifier (WBID) */ /* ************************************************************************* */ static const value_string type_wbid[] = { { 0, "Reserved" }, { 1, "IEEE 802.11" }, { 2, "IEEE 802.16" }, /* From old RFC Draft... */ { 3, "EPCGlobal" }, { 0, NULL } }; /* ************************************************************************* */ /* flag Type Transported (payload) */ /* ************************************************************************* */ static const true_false_string flag_type_t = { "Native frame format (see Wireless Binding ID field)", "IEEE 802.3 frame" }; /* ************************************************************************* */ /* flag Type Fragment */ /* ************************************************************************* */ static const true_false_string flag_type_f = { "Fragmented", "Don't Fragment" }; /* ************************************************************************* */ /* flag Type Last Fragment */ /* ************************************************************************* */ static const true_false_string flag_type_l = { "This is the last fragment", "More fragments follow" }; /* ************************************************************************* */ /* flag Type Wireless */ /* ************************************************************************* */ static const true_false_string flag_type_w = { "Wireless Specific Information is present", "No Wireless Specific Information" }; /* ************************************************************************* */ /* flag Type Radio Mac */ /* ************************************************************************* */ static const true_false_string flag_type_m = { "Radio MAC Address is present", "No Radio MAC Address" }; /* ************************************************************************* */ /* flag Type Keep Alive */ /* ************************************************************************* */ static const true_false_string flag_type_k = { "Keep-Alive Packet", "No Keep-Alive" }; /* ************************************************************************* */ /* Message Type Value */ /* ************************************************************************* */ static const value_string message_type[] = { { 1, "Discovery Request" }, { 2, "Discovery Response" }, { 3, "Join Request" }, { 4, "Join Response" }, { 5, "Configuration Status Request" }, { 6, "Configuration Status Response" }, { 7, "Configuration Update Request" }, { 8, "Configuration Update Response" }, { 9, "WTP Event Request" }, { 10, "WTP Event Response" }, { 11, "Change State Request" }, { 12, "Change State Response" }, { 13, "Echo Request" }, { 14, "Echo Response" }, { 15, "Image Data Request" }, { 16, "Image Data Response" }, { 17, "Reset Request" }, { 18, "Reset Response" }, { 19, "Primary Discovery Request" }, { 20, "Primary Discovery Response" }, { 21, "Data Transfer Request" }, { 22, "Data Transfer Response" }, { 23, "Clear Configuration Request" }, { 24, "Clear Configuration Response" }, { 25, "Station Configuration Request" }, { 26, "Station Configuration Response" }, { 0, NULL } }; /* ************************************************************************* */ /* Message Element Type */ /* ************************************************************************* */ #define TYPE_AC_DESCRIPTOR 1 #define TYPE_AC_IPV4_LIST 2 #define TYPE_AC_IPV6_LIST 3 #define TYPE_AC_NAME 4 #define TYPE_AC_NAME_W_PRIORITY 5 #define TYPE_AC_TIMESTAMP 6 #define TYPE_ADD_MAC_ACL_ENTRY 7 #define TYPE_ADD_STATION 8 #define TYPE_RESERVED_9 9 #define TYPE_CAPWAP_CONTROL_IPV4_ADDRESS 10 #define TYPE_CAPWAP_CONTROL_IPV6_ADDRESS 11 #define TYPE_CAPWAP_TIMERS 12 #define TYPE_DATA_TRANSFER_DATA 13 #define TYPE_DATA_TRANSFER_MODE 14 #define TYPE_DESCRYPTION_ERROR_REPORT 15 #define TYPE_DECRYPTION_ERROR_REPORT_PERIOD 16 #define TYPE_DELETE_MAC_ENTRY 17 #define TYPE_DELETE_STATION 18 #define TYPE_RESERVED_19 19 #define TYPE_DISCOVERY_TYPE 20 #define TYPE_DUPLICATE_IPV4_ADDRESS 21 #define TYPE_DUPLICATE_IPV6_ADDRESS 22 #define TYPE_IDLE_TIMEOUT 23 #define TYPE_IMAGE_DATA 24 #define TYPE_IMAGE_IDENTIFIER 25 #define TYPE_IMAGE_INFORMATION 26 #define TYPE_INITIATE_DOWNLOAD 27 #define TYPE_LOCATION_DATA 28 #define TYPE_MAXIMUM_MESSAGE_LENGTH 29 #define TYPE_CAPWAP_LOCAL_IPV4_ADDRESS 30 #define TYPE_RADIO_ADMINISTRATIVE_STATE 31 #define TYPE_RADIO_OPERATIONAL_STATE 32 #define TYPE_RESULT_CODE 33 #define TYPE_RETURNED_MESSAGE_ELEMENT 34 #define TYPE_SESSION_ID 35 #define TYPE_STATISTICS_TIMER 36 #define TYPE_VENDOR_SPECIFIC_PAYLOAD 37 #define TYPE_WTP_BOARD_DATA 38 #define TYPE_WTP_DESCRIPTOR 39 #define TYPE_WTP_FALLBACK 40 #define TYPE_WTP_FRAME_TUNNEL_MODE 41 #define TYPE_RESERVED_42 42 #define TYPE_RESERVED_43 43 #define TYPE_WTP_MAC_TYPE 44 #define TYPE_WTP_NAME 45 #define TYPE_RESERVED_46 46 #define TYPE_WTP_RADIO_STATISTICS 47 #define TYPE_WTP_REBOOT_STATISTICS 48 #define TYPE_WTP_STATIC_IP_ADDRESS_INFORMATION 49 #define TYPE_CAPWAP_LOCAL_IPV6_ADDRESS 50 #define TYPE_CAPWAP_TRANSPORT_PROTOCOL 51 #define TYPE_MTU_DISCOVERY_PADDING 52 #define TYPE_ECN_SUPPORT 53 /* ************************************************************************* */ /* Message Element Type Value */ /* ************************************************************************* */ static const value_string message_element_type_vals[] = { { TYPE_AC_DESCRIPTOR, "AC Descriptor" }, { TYPE_AC_IPV4_LIST, "AC IPv4 List" }, { TYPE_AC_IPV6_LIST, "AC IPv6 List" }, { TYPE_AC_NAME, "AC Name" }, { TYPE_AC_NAME_W_PRIORITY, "AC Name With Priority" }, { TYPE_AC_TIMESTAMP, "AC Timestamp" }, { TYPE_ADD_MAC_ACL_ENTRY, "Add MAC ACL Entry" }, { TYPE_ADD_STATION, "Add Station" }, { TYPE_RESERVED_9, "Reserved" }, { TYPE_CAPWAP_CONTROL_IPV4_ADDRESS, "CAPWAP Control IPv4 Address" }, { TYPE_CAPWAP_CONTROL_IPV6_ADDRESS, "CAPWAP Control IPv6 Address" }, { TYPE_CAPWAP_TIMERS, "CAPWAP Timers" }, { TYPE_DATA_TRANSFER_DATA, "Data Transfer Data" }, { TYPE_DATA_TRANSFER_MODE, "Data Transfer Mode" }, { TYPE_DESCRYPTION_ERROR_REPORT, "Decryption Error Report" }, { TYPE_DECRYPTION_ERROR_REPORT_PERIOD, "Decryption Error Report Period" }, { TYPE_DELETE_MAC_ENTRY, "Delete MAC ACL Entry" }, { TYPE_DELETE_STATION, "Delete Station" }, { TYPE_RESERVED_19, "Reserved" }, { TYPE_DISCOVERY_TYPE, "Discovery Type" }, { TYPE_DUPLICATE_IPV4_ADDRESS, "Duplicate IPv4 Address" }, { TYPE_DUPLICATE_IPV6_ADDRESS, "Duplicate IPv6 Address" }, { TYPE_IDLE_TIMEOUT, "Idle Timeout" }, { TYPE_IMAGE_DATA, "Image Data" }, { TYPE_IMAGE_IDENTIFIER, "Image Identifier" }, { TYPE_IMAGE_INFORMATION, "Image Information" }, { TYPE_INITIATE_DOWNLOAD, "Initiate Download" }, { TYPE_LOCATION_DATA, "Location Data" }, { TYPE_MAXIMUM_MESSAGE_LENGTH, "Maximum Message Length" }, { TYPE_CAPWAP_LOCAL_IPV4_ADDRESS, "CAPWAP Local IPv4 Address" }, { TYPE_RADIO_ADMINISTRATIVE_STATE, "Radio Administrative State " }, { TYPE_RADIO_OPERATIONAL_STATE, "Radio Operational State" }, { TYPE_RESULT_CODE, "Result Code" }, { TYPE_RETURNED_MESSAGE_ELEMENT, "Returned Message Element" }, { TYPE_SESSION_ID, "Session ID" }, { TYPE_STATISTICS_TIMER, "Statistics Timer" }, { TYPE_VENDOR_SPECIFIC_PAYLOAD, "Vendor Specific Payload" }, { TYPE_WTP_BOARD_DATA, "WTP Board Data" }, { TYPE_WTP_DESCRIPTOR, "WTP Descriptor" }, { TYPE_WTP_FALLBACK, "WTP Fallback " }, { TYPE_WTP_FRAME_TUNNEL_MODE, "WTP Frame Tunnel Mode " }, { TYPE_RESERVED_42, "Reserved" }, { TYPE_RESERVED_43, "Reserved" }, { TYPE_WTP_MAC_TYPE, "WTP MAC Type" }, { TYPE_WTP_NAME, "WTP Name" }, { TYPE_RESERVED_46, "Unused/Reserved" }, { TYPE_WTP_RADIO_STATISTICS, "WTP Radio Statistics" }, { TYPE_WTP_REBOOT_STATISTICS, "WTP Reboot Statistics" }, { TYPE_WTP_STATIC_IP_ADDRESS_INFORMATION, "WTP Static IP Address Information" }, { TYPE_CAPWAP_LOCAL_IPV6_ADDRESS, "CAPWAP Local IPv6 Address" }, { TYPE_CAPWAP_TRANSPORT_PROTOCOL, "CAPWAP Transport Protocol" }, { TYPE_MTU_DISCOVERY_PADDING, "MTU Discovery Padding" }, { TYPE_ECN_SUPPORT, "ECN Support" }, { 0, NULL } }; /* ************************************************************************* */ /* Discovery Type */ /* ************************************************************************* */ static const value_string discovery_type_vals[] = { { 0, "Unknown" }, { 1, "Static Configuration" }, { 2, "DHCP" }, { 3, "DNS" }, { 4, "AC Referral" }, { 0, NULL } }; /* ************************************************************************* */ /* Radio MAC Address Field */ /* ************************************************************************* */ static const value_string rmac_field_vals[] = { { 0, "Reserved" }, { 1, "Supported" }, { 2, "Not Supported" }, { 0, NULL } }; /* ************************************************************************* */ /* Board Data Type Value */ /* ************************************************************************* */ #define BOARD_DATA_WTP_MODEL_NUMBER 0 #define BOARD_DATA_WTP_SERIAL_NUMBER 1 #define BOARD_DATA_BOARD_ID 2 #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; }