/* packet-bvlc.c * Routines for BACnet/IP (BVLL, BVLC) dissection * Copyright 2001, Hartmut Mueller , FH Dortmund * * Wireshark - Network traffic analyzer * By Gerald Combs * Copyright 1998 Gerald Combs * * Copied from README.developer,v 1.23 * * SPDX-License-Identifier: GPL-2.0-or-later */ #include "config.h" #include #include "packet-bacnet.h" void proto_register_bvlc(void); void proto_reg_handoff_bvlc(void); #define BVLC_UDP_PORT 0xBAC0 /* Network Layer Wrapper Control Information */ #define BAC_WRAPPER_CONTROL_NET 0x80 #define BAC_WRAPPER_MSG_ENCRYPED 0x40 #define BAC_WRAPPER_RESERVED 0x20 #define BAC_WRAPPER_AUTHD_PRESENT 0x10 #define BAC_WRAPPER_DO_NOT_UNWRAP 0x08 #define BAC_WRAPPER_DO_NOT_DECRPT 0x04 #define BAC_WRAPPER_NO_TRUST_SRC 0x02 #define BAC_WRAPPER_SECURE_BY_RTR 0x01 static int proto_bvlc = -1; static int proto_bscvlc = -1; static int hf_bvlc_type = -1; static int hf_bvlc_function = -1; static int hf_bvlc_ipv6_function = -1; static int hf_bvlc_length = -1; static int hf_bvlc_result_ip4 = -1; static int hf_bvlc_result_ip6 = -1; static int hf_bvlc_bdt_ip = -1; static int hf_bvlc_bdt_mask = -1; static int hf_bvlc_bdt_port = -1; static int hf_bvlc_reg_ttl = -1; static int hf_bvlc_fdt_ip = -1; static int hf_bvlc_fdt_ipv6 = -1; static int hf_bvlc_fdt_port = -1; static int hf_bvlc_fdt_ttl = -1; static int hf_bvlc_fdt_timeout = -1; static int hf_bvlc_fwd_ip = -1; static int hf_bvlc_fwd_port = -1; static int hf_bvlc_virt_source = -1; static int hf_bvlc_virt_dest = -1; static int hf_bvlc_orig_source_addr = -1; static int hf_bvlc_orig_source_port = -1; static int hf_bscvlc_control = -1; static int hf_bscvlc_control_data_option = -1; static int hf_bscvlc_control_destination_option = -1; static int hf_bscvlc_control_destination_address = -1; static int hf_bscvlc_control_origin_address = -1; static int hf_bscvlc_control_reserved = -1; static int hf_bscvlc_header = -1; static int hf_bscvlc_header_marker = -1; static int hf_bscvlc_header_length = -1; static int hf_bscvlc_header_data = -1; static int hf_bscvlc_header_opt_type = -1; static int hf_bscvlc_header_opt_data = -1; static int hf_bscvlc_header_opt_must_understand = -1; static int hf_bscvlc_header_opt_more = -1; static int hf_bscvlc_vendor_id = -1; static int hf_bscvlc_proprietary_opt_type = -1; static int hf_bscvlc_proprietary_data = -1; static int hf_bscvlc_hub_conn_state = -1; static int hf_bscvlc_accept_conns = -1; static int hf_bscvlc_max_bvlc_length = -1; static int hf_bscvlc_max_npdu_length = -1; static int hf_bscvlc_function = -1; static int hf_bscvlc_result = -1; static int hf_bscvlc_error_class = -1; static int hf_bscvlc_error_code = -1; static int hf_bscvlc_result_data = -1; static int hf_bscvlc_uris = -1; static int hf_bscvlc_msg_id = -1; static int hf_bscvlc_orig_vmac = -1; static int hf_bscvlc_dest_vmac = -1; static int hf_bscvlc_connect_vmac = -1; static int hf_bscvlc_connect_uuid = -1; static dissector_table_t bvlc_dissector_table; static dissector_table_t bscvlc_dissector_table; static dissector_table_t bvlc_ipv6_dissector_table; static dissector_handle_t bvlc_handle = NULL; static dissector_handle_t bscvlc_handle = NULL; static const value_string bvlc_function_names[] = { { 0x00, "BVLC-Result" }, { 0x01, "Write-Broadcast-Distribution-Table" }, { 0x02, "Read-Broadcast-Distribution-Table" }, { 0x03, "Read-Broadcast-Distribution-Table-Ack" }, { 0x04, "Forwarded-NPDU" }, { 0x05, "Register-Foreign-Device" }, { 0x06, "Read-Foreign-Device-Table" }, { 0x07, "Read-Foreign-Device-Table-Ack" }, { 0x08, "Delete-Foreign-Device-Table-Entry" }, { 0x09, "Distribute-Broadcast-To-Network" }, { 0x0a, "Original-Unicast-NPDU" }, { 0x0b, "Original-Broadcast-NPDU" }, { 0x0c, "Secured-BVLL" }, { 0, NULL } }; static const value_string bscvlc_function_names[] = { { 0x00, "BVLC-Result" }, { 0x01, "Encapsulated-NPDU" }, { 0x02, "Address-Resolution" }, { 0x03, "Address-Resolution-ACK" }, { 0x04, "Advertisement" }, { 0x05, "Advertisement-Solicitation" }, { 0x06, "Connect-Request" }, { 0x07, "Connect-Accept" }, { 0x08, "Disconnect-Request" }, { 0x09, "Disconnect-ACK" }, { 0x0A, "Heartbeat-Request" }, { 0x0B, "Heartbeat-ACK" }, { 0x0C, "Proprietary-Message" }, { 0, NULL } }; static const value_string bvlc_result_names[] = { { 0x00, "Successful completion" }, { 0x10, "Write-Broadcast-Distribution-Table NAK" }, { 0x20, "Read-Broadcast-Distribution-Table NAK" }, { 0x30, "Register-Foreign-Device NAK" }, { 0x40, "Read-Foreign-Device-Table NAK" }, { 0x50, "Delete-Foreign-Device-Table-Entry NAK" }, { 0x60, "Distribute-Broadcast-To-Network NAK" }, { 0, NULL } }; static const value_string bscvlc_result_names[] = { { 0x00, "Successful completion (ACK)" }, { 0x01, "Completion failed (NAK)" }, { 0, NULL } }; static const value_string bvlc_ipv6_function_names[] = { { 0x00, "BVLC-Result", }, { 0x01, "Original-Unicast-NPDU", }, { 0x02, "Original-Broadcast-NPDU", }, { 0x03, "Address-Resolution", }, { 0x04, "Forwarded-Address-Resolution", }, { 0x05, "Address-Resolution-ACK", }, { 0x06, "Virtual-Address-Resolution", }, { 0x07, "Virtual-Address-Resolution-ACK", }, { 0x08, "Forwarded-NPDU", }, { 0x09, "Register-Foreign-Device", }, { 0x0A, "Delete-Foreign-Device-Table-Entry", }, { 0x0B, "Secure-BVLL", }, { 0x0C, "Distribute-Broadcast-To-Network", }, { 0, NULL } }; static const value_string bvlc_ipv6_result_names[] = { { 0x00, "Successful completion" }, { 0x30, "Address-Resolution NAK" }, { 0x60, "Virtual-Address-Resolution NAK" }, { 0x90, "Register-Foreign-Device NAK" }, { 0xA0, "Delete-Foreign-Device-Table-Entry NAK" }, { 0xC0, "Distribute-Broadcast-To-Network NAK" }, { 0, NULL } }; static const value_string bscvlc_header_type_names[] = { { 0x01, "Secure Path" }, { 0x1F, "Proprietary Header Option" }, { 0, NULL } }; static const value_string bscvlc_hub_conn_state_names[] = { { 0x00, "No hub connection" }, { 0x01, "Connected to primary hub" }, { 0x02, "Connected to failover hub" }, { 0, NULL } }; static const value_string bscvlc_hub_accept_conns_names[] = { { 0x00, "The node does not support accepting direct connections" }, { 0x01, "The node supports accepting direct connections" }, { 0, NULL } }; static gint ett_bvlc = -1; static gint ett_bscvlc = -1; static gint ett_bscvlc_ctrl = -1; static gint ett_bscvlc_hdr = -1; static gint ett_bdt = -1; static gint ett_fdt = -1; #define BACNET_IP_ANNEX_J 0x81 #define BACNET_IPV6_ANNEX_U 0x82 static const value_string bvlc_types[] = { { BACNET_IP_ANNEX_J, "BACnet/IP (Annex J)" }, { BACNET_IPV6_ANNEX_U, "BACnet/IPV6 (Annex U)" }, { 0, NULL } }; #define BSCVLC_CONTROL_DATA_OPTION 0x01 #define BSCVLC_CONTROL_DEST_OPTION 0x02 #define BSCVLC_CONTROL_DEST_ADDRESS 0x04 #define BSCVLC_CONTROL_ORIG_ADDRESS 0x08 #define BSCVLC_CONTROL_RESERVED 0xF0 static const true_false_string control_data_option_set_high = { "Data Options field is present.", "Data Options field is absent." }; static const true_false_string control_destination_option_set_high = { "Destination Options field is present.", "Destination Options field is absent." }; static const true_false_string control_destination_address_set_high = { "Destination Virtual Address is present.", "Destination Virtual Address is absent." }; static const true_false_string control_orig_address_set_high = { "Originating Virtual Address is present.", "Originating Virtual Address is absent." }; static const true_false_string control_reserved_set_high = { "Shall be zero, but is not.", "Shall be zero and is zero." }; #define BSCVLC_HEADER_OPTION_TYPE 0x1F #define BSCVLC_HEADER_OPTION_DATA 0x20 #define BSCVLC_HEADER_OPTION_MUST_UNDERSTAND 0x40 #define BSCVLC_HEADER_OPTION_MORE_OPTIONS 0x80 #define BSCVLC_HEADER_TYPE_SECURE_PATH 0x01 #define BSCVLC_HEADER_TYPE_PROPRIETARY 0x1F static const true_false_string header_opt_data_set_high = { "The 'Header Length' and 'Header Data' fields are present.", "The 'Header Length' and 'Header Data' fields are absent." }; static const true_false_string header_opt_must_understand_set_high = { "This header option must be understood for consuming the message.", "This header option can be ignored if not understood." }; static const true_false_string header_opt_more_set_high = { "Another header option follows in the current header option list.", "This is the last header option in the current header option list." }; static const value_string BACnetErrorClass [] = { { 0, "device" }, { 1, "object" }, { 2, "property" }, { 3, "resources" }, { 4, "security" }, { 5, "services" }, { 6, "vt" }, { 7, "communication" }, { 0, NULL } /* Enumerated values 0-63 are reserved for definition by ASHRAE. Enumerated values64-65535 may be used by others subject to the procedures and constraints described in Clause 23. */ }; static const value_string BACnetErrorCode[] = { { 0, "other"}, { 1, "authentication-failed"}, { 2, "configuration-in-progress"}, { 3, "device-busy"}, { 4, "dynamic-creation-not-supported"}, { 5, "file-access-denied"}, { 6, "incompatible-security-levels"}, { 7, "inconsistent-parameters"}, { 8, "inconsistent-selection-criterion"}, { 9, "invalid-data-type"}, { 10, "invalid-file-access-method"}, { 11, "invalid-file-start-position"}, { 12, "invalid-operator-name"}, { 13, "invalid-parameter-data-type"}, { 14, "invalid-time-stamp"}, { 15, "key-generation-error"}, { 16, "missing-required-parameter"}, { 17, "no-objects-of-specified-type"}, { 18, "no-space-for-object"}, { 19, "no-space-to-add-list-element"}, { 20, "no-space-to-write-property"}, { 21, "no-vt-sessions-available"}, { 22, "property-is-not-a-list"}, { 23, "object-deletion-not-permitted"}, { 24, "object-identifier-already-exists"}, { 25, "operational-problem"}, { 26, "password-failure"}, { 27, "read-access-denied"}, { 28, "security-not-supported"}, { 29, "service-request-denied"}, { 30, "timeout"}, { 31, "unknown-object"}, { 32, "unknown-property"}, { 33, "removed enumeration"}, { 34, "unknown-vt-class"}, { 35, "unknown-vt-session"}, { 36, "unsupported-object-type"}, { 37, "value-out-of-range"}, { 38, "vt-session-already-closed"}, { 39, "vt-session-termination-failure"}, { 40, "write-access-denied"}, { 41, "character-set-not-supported"}, { 42, "invalid-array-index"}, { 43, "cov-subscription-failed"}, { 44, "not-cov-property"}, { 45, "optional-functionality-not-supported"}, { 46, "invalid-configuration-data"}, { 47, "datatype-not-supported"}, { 48, "duplicate-name"}, { 49, "duplicate-object-id"}, { 50, "property-is-not-an-array"}, { 51, "abort - buffer - overflow" }, { 52, "abort - invalid - apdu - in - this - state" }, { 53, "abort - preempted - by - higher - priority - task" }, { 54, "abort - segmentation - not - supported" }, { 55, "abort - proprietary" }, { 56, "abort - other" }, { 57, "reject - invalid - tag" }, { 58, "reject - network - down" }, { 59, "reject - buffer - overflow" }, { 60, "reject - inconsistent - parameters" }, { 61, "reject - invalid - parameter - data - type" }, { 62, "reject - invalid - tag" }, { 63, "reject - missing - required - parameter" }, { 64, "reject - parameter - out - of - range" }, { 65, "reject - too - many - arguments" }, { 66, "reject - undefined - enumeration" }, { 67, "reject - unrecognized - service" }, { 68, "reject - proprietary" }, { 69, "reject - other" }, { 70, "unknown - device" }, { 71, "unknown - route" }, { 72, "value - not - initialized" }, { 73, "invalid-event-state"}, { 74, "no-alarm-configured"}, { 75, "log-buffer-full"}, { 76, "logged-value-purged"}, { 77, "no-property-specified"}, { 78, "not-configured-for-triggered-logging"}, { 79, "unknown-subscription"}, { 80, "parameter-out-of-range"}, { 81, "list-element-not-found"}, { 82, "busy"}, { 83, "communication-disabled"}, { 84, "success"}, { 85, "access-denied"}, { 86, "bad-destination-address"}, { 87, "bad-destination-device-id"}, { 88, "bad-signature"}, { 89, "bad-source-address"}, { 90, "bad-timestamp"}, { 91, "cannot-use-key"}, { 92, "cannot-verify-message-id"}, { 93, "correct-key-revision"}, { 94, "destination-device-id-required"}, { 95, "duplicate-message"}, { 96, "encryption-not-configured"}, { 97, "encryption-required"}, { 98, "incorrect-key"}, { 99, "invalid-key-data"}, { 100, "key-update-in-progress"}, { 101, "malformed-message"}, { 102, "not-key-server"}, { 103, "security-not-configured"}, { 104, "source-security-required"}, { 105, "too-many-keys"}, { 106, "unknown-authentication-type"}, { 107, "unknown-key"}, { 108, "unknown-key-revision"}, { 109, "unknown-source-message"}, { 110, "not-router-to-dnet"}, { 111, "router-busy"}, { 112, "unknown-network-message"}, { 113, "message-too-long"}, { 114, "security-error"}, { 115, "addressing-error"}, { 116, "write-bdt-failed"}, { 117, "read-bdt-failed"}, { 118, "register-foreign-device-failed"}, { 119, "read-fdt-failed"}, { 120, "delete-fdt-entry-failed"}, { 121, "distribute-broadcast-failed"}, { 122, "unknown-file-size"}, { 123, "abort-apdu-too-long"}, { 124, "abort-application-exceeded-reply-time"}, { 125, "abort-out-of-resources"}, { 126, "abort-tsm-timeout"}, { 127, "abort-window-size-out-of-range"}, { 128, "file-full"}, { 129, "inconsistent-configuration"}, { 130, "inconsistent-object-type"}, { 131, "internal-error"}, { 132, "not-configured"}, { 133, "out-of-memory"}, { 134, "value-too-long"}, { 135, "abort-insufficient-security"}, { 136, "abort-security-error"}, { 137, "duplicate-entry"}, { 138, "invalid-value-in-this-state"}, { 139, "invalid-operation-in-this-state"}, { 140, "list-item-not-numbered"}, { 141, "list-item-not-timestamped"}, { 142, "invalid-data-encoding"}, { 143, "bvlc-function-unknown"}, { 144, "bvlc-proprietary-function-unknown"}, { 145, "header-encoding-error"}, { 146, "header-not-understood"}, { 147, "message-incomplete"}, { 148, "not-a-bacnet-sc-hub"}, { 149, "payload-expected"}, { 150, "unexpected-data"}, { 151, "node-duplicate-vmac"}, { 152, "http-unexpected-response-code"}, { 153, "http-no-upgrade"}, { 154, "http-resource-not-local"}, { 155, "http-proxy-authentication-failed"}, { 156, "http-response-timeout"}, { 157, "http-response-syntax-error"}, { 158, "http-response-value-error"}, { 159, "http-response-missing-header"}, { 160, "http-websocket-header-error"}, { 161, "http-upgrade-required"}, { 162, "http-upgrade-error"}, { 163, "http-temporary-unavailable"}, { 164, "http-not-a-server"}, { 165, "http-error"}, { 166, "websocket-scheme-not-supported"}, { 167, "websocket-unknown-control-message"}, { 168, "websocket-close-error"}, { 169, "websocket-closed-by-peer"}, { 170, "websocket-endpoint-leaves"}, { 171, "websocket-protocol-error"}, { 172, "websocket-data-not-accepted"}, { 173, "websocket-closed-abnormally"}, { 174, "websocket-data-inconsistent"}, { 175, "websocket-data-against-policy"}, { 176, "websocket-frame-too-long"}, { 177, "websocket-extension-missing"}, { 178, "websocket-request-unavailable"}, { 179, "websocket-error"}, { 180, "tls-client-certificate-error"}, { 181, "tls-server-certificate-error"}, { 182, "tls-client-authentication-failed"}, { 183, "tls-server-authentication-failed"}, { 184, "tls-client-certificate-expired"}, { 185, "tls-server-certificate-expired"}, { 186, "tls-client-certificate-revoked"}, { 187, "tls-server-certificate-revoked"}, { 188, "tls-error"}, { 189, "dns-unavailable"}, { 190, "dns-name-resolution-failed"}, { 191, "dns-resolver-failure"}, { 192, "dns-error"}, { 193, "tcp-connect-timeout"}, { 194, "tcp-connection-refused"}, { 195, "tcp-closed-by-local"}, { 196, "tcp-closed-other"}, { 197, "tcp-error"}, { 198, "ip-address-not-reachable"}, { 199, "ip-error"}, { 0, NULL} /* Enumerated values 0-255 are reserved for definition by ASHRAE. Enumerated values 256-65535 may be used by others subject to the procedures and constraints described in Clause 23. */ }; static int * const bscvlc_control_flags[] = { &hf_bscvlc_control_data_option, &hf_bscvlc_control_destination_option, &hf_bscvlc_control_destination_address, &hf_bscvlc_control_origin_address, &hf_bscvlc_control_reserved, NULL }; static int * const bscvlc_header_flags[] = { &hf_bscvlc_header_opt_type, &hf_bscvlc_header_opt_data, &hf_bscvlc_header_opt_must_understand, &hf_bscvlc_header_opt_more, NULL }; static int dissect_ipv4_bvlc(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_) { proto_item *ti; proto_item *ti_bdt; proto_item *ti_fdt; proto_tree *bvlc_tree; proto_tree *bdt_tree; /* Broadcast Distribution Table */ proto_tree *fdt_tree; /* Foreign Device Table */ gint offset; guint8 bvlc_type; guint8 bvlc_function; guint16 bvlc_length; guint16 packet_length; guint npdu_length; guint length_remaining; tvbuff_t *next_tvb; offset = 0; bvlc_type = tvb_get_guint8(tvb, offset); bvlc_function = tvb_get_guint8(tvb, offset + 1); packet_length = tvb_get_ntohs(tvb, offset + 2); length_remaining = tvb_reported_length_remaining(tvb, offset); if (bvlc_function > 0x08) { /* We have a constant header length of BVLC of 4 in every * BVLC-packet forewarding an NPDU. Beware: Changes in the * BACnet-IP-standard may break this. */ bvlc_length = 4; } else if (bvlc_function == 0x04) { /* 4 Bytes + 6 Bytes for B/IP Address of Originating Device */ bvlc_length = 10; } else { /* BVLC-packets with function below 0x09 contain * routing-level data (e.g. Broadcast Distribution) * but no NPDU for BACnet, so bvlc_length goes up to the end * of the captured frame. */ bvlc_length = packet_length; } if (bvlc_length < 4 || bvlc_length > packet_length) { return 0; /* reject */ } /* Put the BVLC Type in the info column */ col_append_fstr(pinfo->cinfo, COL_INFO, " BVLC Function %s ", val_to_str_const(bvlc_function, bvlc_function_names, "unknown")); ti = proto_tree_add_item(tree, proto_bvlc, tvb, 0, bvlc_length, ENC_NA); bvlc_tree = proto_item_add_subtree(ti, ett_bvlc); proto_tree_add_uint(bvlc_tree, hf_bvlc_type, tvb, offset, 1, bvlc_type); offset++; proto_tree_add_uint(bvlc_tree, hf_bvlc_function, tvb, offset, 1, bvlc_function); offset++; if (length_remaining != packet_length) proto_tree_add_uint_format_value(bvlc_tree, hf_bvlc_length, tvb, offset, 2, bvlc_length, "%d of %d bytes (invalid length - expected %d bytes)", bvlc_length, packet_length, length_remaining); else proto_tree_add_uint_format_value(bvlc_tree, hf_bvlc_length, tvb, offset, 2, bvlc_length, "%d of %d bytes BACnet packet length", bvlc_length, packet_length); offset += 2; switch (bvlc_function) { case 0x00: /* BVLC-Result */ /* I don't know why the result code is encoded in 4 nibbles, * but only using one: 0x00r0. Shifting left 4 bits. */ /* We should bitmask the result correctly when we have a * packet to dissect, see README.developer, 1.6.2, FID */ proto_tree_add_item(bvlc_tree, hf_bvlc_result_ip4, tvb, offset, 2, ENC_BIG_ENDIAN); /*offset += 2;*/ break; case 0x01: /* Write-Broadcast-Distribution-Table */ case 0x03: /* Read-Broadcast-Distribution-Table-Ack */ /* List of BDT Entries: N*10-octet */ ti_bdt = proto_tree_add_item(bvlc_tree, proto_bvlc, tvb, offset, bvlc_length-4, ENC_NA); bdt_tree = proto_item_add_subtree(ti_bdt, ett_bdt); /* List of BDT Entries: N*10-octet */ while ((bvlc_length - offset) > 9) { proto_tree_add_item(bdt_tree, hf_bvlc_bdt_ip, tvb, offset, 4, ENC_BIG_ENDIAN); offset += 4; proto_tree_add_item(bdt_tree, hf_bvlc_bdt_port, tvb, offset, 2, ENC_BIG_ENDIAN); offset += 2; proto_tree_add_item(bdt_tree, hf_bvlc_bdt_mask, tvb, offset, 4, ENC_NA); offset += 4; } /* We check this if we get a BDT-packet somewhere */ break; case 0x02: /* Read-Broadcast-Distribution-Table */ /* nothing to do here */ break; case 0x05: /* Register-Foreign-Device */ /* Time-to-Live 2-octets T, Time-to-Live T, in seconds */ proto_tree_add_item(bvlc_tree, hf_bvlc_reg_ttl, tvb, offset, 2, ENC_BIG_ENDIAN); /*offset += 2;*/ break; case 0x06: /* Read-Foreign-Device-Table */ /* nothing to do here */ break; case 0x07: /* Read-Foreign-Device-Table-Ack */ /* List of FDT Entries: N*10-octet */ /* N indicates the number of entries in the FDT whose * contents are being returned. Each returned entry * consists of the 6-octet B/IP address of the registrant; * the 2-octet Time-to-Live value supplied at the time of * registration; and a 2-octet value representing the * number of seconds remaining before the BBMD will purge * the registrant's FDT entry if no re-registration occurs. */ ti_fdt = proto_tree_add_item(bvlc_tree, proto_bvlc, tvb, offset, bvlc_length -4, ENC_NA); fdt_tree = proto_item_add_subtree(ti_fdt, ett_fdt); /* List of FDT Entries: N*10-octet */ while ((bvlc_length - offset) > 9) { proto_tree_add_item(fdt_tree, hf_bvlc_fdt_ip, tvb, offset, 4, ENC_BIG_ENDIAN); offset += 4; proto_tree_add_item(fdt_tree, hf_bvlc_fdt_port, tvb, offset, 2, ENC_BIG_ENDIAN); offset += 2; proto_tree_add_item(fdt_tree, hf_bvlc_fdt_ttl, tvb, offset, 2, ENC_BIG_ENDIAN); offset += 2; proto_tree_add_item(fdt_tree, hf_bvlc_fdt_timeout, tvb, offset, 2, ENC_BIG_ENDIAN); offset += 2; } /* We check this if we get a FDT-packet somewhere */ break; case 0x08: /* Delete-Foreign-Device-Table-Entry */ /* FDT Entry: 6-octets */ proto_tree_add_item(bvlc_tree, hf_bvlc_fdt_ip, tvb, offset, 4, ENC_BIG_ENDIAN); offset += 4; proto_tree_add_item(bvlc_tree, hf_bvlc_fdt_port, tvb, offset, 2, ENC_BIG_ENDIAN); /*offset += 2;*/ break; case 0x0C: /* Secure-BVLL */ offset = bacnet_dissect_sec_wrapper(tvb, pinfo, tree, offset, NULL); if (offset < 0) { call_data_dissector(tvb, pinfo, tree); return tvb_captured_length(tvb); } dissect_ipv4_bvlc(tvb, pinfo, tree, data); break; /* We check this if we get a FDT-packet somewhere */ case 0x04: /* Forwarded-NPDU * Why is this 0x04? It would have been a better * idea to append all forewarded NPDUs at the * end of the function table in the B/IP-standard! */ /* proto_tree_add_bytes_format(); */ proto_tree_add_item(bvlc_tree, hf_bvlc_fwd_ip, tvb, offset, 4, ENC_BIG_ENDIAN); offset += 4; proto_tree_add_item(bvlc_tree, hf_bvlc_fwd_port, tvb, offset, 2, ENC_BIG_ENDIAN); /*offset += 2;*/ break; default: /* Distribute-Broadcast-To-Network * Original-Unicast-NPDU * Original-Broadcast-NPDU * Going to the next dissector... */ break; } /* Ok, no routing information BVLC packet. Dissect as * BACnet NPDU */ npdu_length = packet_length - bvlc_length; next_tvb = tvb_new_subset_length_caplen(tvb, bvlc_length, -1, npdu_length); /* Code from Guy Harris */ if (!dissector_try_uint(bvlc_dissector_table, bvlc_function, next_tvb, pinfo, tree)) { /* Unknown function - dissect the paylod as data */ call_data_dissector(next_tvb, pinfo, tree); } return tvb_reported_length(tvb); } static int dissect_ipv6_bvlc(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_) { proto_item *ti; proto_tree *bvlc_tree; gint offset; guint8 bvlc_type; guint8 bvlc_function; guint16 bvlc_length = 0; guint16 packet_length; guint npdu_length; guint length_remaining; tvbuff_t *next_tvb; offset = 0; bvlc_type = tvb_get_guint8(tvb, offset); bvlc_function = tvb_get_guint8(tvb, offset + 1); packet_length = tvb_get_ntohs(tvb, offset + 2); length_remaining = tvb_reported_length_remaining(tvb, offset); switch (bvlc_function) { case 0x00: case 0x09: bvlc_length = 9; break; case 0x01: bvlc_length = 10; break; case 0x02: case 0x06: case 0x0C: bvlc_length = 7; break; case 0x03: case 0x05: case 0x07: bvlc_length = 10; break; case 0x04: bvlc_length = 28; break; case 0x08: case 0x0A: bvlc_length = 25; break; case 0x0B: bvlc_length = 4; break; default: break; } if (bvlc_length > packet_length) { return 0; /* reject */ } /* Put the BVLC Type in the info column */ col_append_fstr(pinfo->cinfo, COL_INFO, " BVLC Function %s ", val_to_str_const(bvlc_function, bvlc_function_names, "unknown")); ti = proto_tree_add_item(tree, proto_bvlc, tvb, 0, bvlc_length, ENC_NA); bvlc_tree = proto_item_add_subtree(ti, ett_bvlc); /* add the BVLC type */ proto_tree_add_uint(bvlc_tree, hf_bvlc_type, tvb, offset, 1, bvlc_type); offset++; /* add the BVLC function */ proto_tree_add_uint(bvlc_tree, hf_bvlc_ipv6_function, tvb, offset, 1, bvlc_function); offset++; /* add the length information */ if (length_remaining != packet_length) proto_tree_add_uint_format_value(bvlc_tree, hf_bvlc_length, tvb, offset, 2, bvlc_length, "%d of %d bytes (invalid length - expected %d bytes)", bvlc_length, packet_length, length_remaining); else proto_tree_add_uint_format_value(bvlc_tree, hf_bvlc_length, tvb, offset, 2, bvlc_length, "%d of %d bytes BACnet packet length", bvlc_length, packet_length); offset += 2; /* add the optional present virtual source address */ if (bvlc_function != 0x0B) { proto_tree_add_item(bvlc_tree, hf_bvlc_virt_source, tvb, offset, 3, ENC_BIG_ENDIAN); offset += 3; } /* handle additional function parameters */ switch (bvlc_function) { case 0x00: /* BVLC-Result */ proto_tree_add_item(bvlc_tree, hf_bvlc_result_ip6, tvb, offset, 2, ENC_BIG_ENDIAN); offset += 2; break; case 0x01: /* Original-Unicast-NPDU */ case 0x03: /* Address-Resolution */ case 0x05: /* Address-Resolution-ACK */ case 0x07: /* Virtual-Address-Resolution-ACK */ proto_tree_add_item(bvlc_tree, hf_bvlc_virt_dest, tvb, offset, 3, ENC_BIG_ENDIAN); offset += 3; break; case 0x04: /* Forwarded-Address-Resolution */ proto_tree_add_item(bvlc_tree, hf_bvlc_virt_dest, tvb, offset, 3, ENC_BIG_ENDIAN); offset += 3; proto_tree_add_item(bvlc_tree, hf_bvlc_orig_source_addr, tvb, offset, 16, ENC_NA); offset += 16; proto_tree_add_item(bvlc_tree, hf_bvlc_orig_source_port, tvb, offset, 2, ENC_BIG_ENDIAN); offset += 2; break; case 0x08: /* Forwarded-NPDU */ proto_tree_add_item(bvlc_tree, hf_bvlc_orig_source_addr, tvb, offset, 16, ENC_NA); offset += 16; proto_tree_add_item(bvlc_tree, hf_bvlc_orig_source_port, tvb, offset, 2, ENC_BIG_ENDIAN); offset += 2; break; case 0x06: /* Virtual-Address-Resolution */ break; case 0x09: /* Register-Foreign-Device */ proto_tree_add_item(bvlc_tree, hf_bvlc_reg_ttl, tvb, offset, 2, ENC_BIG_ENDIAN); offset += 2; break; case 0x0A: /* Delete-Foreign-Device-Table-Entry */ proto_tree_add_item(bvlc_tree, hf_bvlc_fdt_ipv6, tvb, offset, 16, ENC_NA); offset += 16; proto_tree_add_item(bvlc_tree, hf_bvlc_fdt_port, tvb, offset, 2, ENC_BIG_ENDIAN); offset += 2; break; case 0x0B: /* Secure-BVLL */ offset = bacnet_dissect_sec_wrapper(tvb, pinfo, tree, offset, NULL); if (offset < 0) { call_data_dissector(tvb, pinfo, tree); return tvb_captured_length(tvb); } dissect_ipv6_bvlc(tvb, pinfo, tree, data); break; case 0x02: /* Original-Broadcast-NPDU */ case 0x0c: /* Distribute-Broadcast-To-Network */ default: /* * Going to the next dissector... */ break; } /* Ok, no routing information BVLC packet. Dissect as * BACnet NPDU */ npdu_length = packet_length - offset; next_tvb = tvb_new_subset_length_caplen(tvb, offset, -1, npdu_length); /* Code from Guy Harris */ if ( ! dissector_try_uint(bvlc_ipv6_dissector_table, bvlc_function, next_tvb, pinfo, tree)) { /* Unknown function - dissect the paylod as data */ call_data_dissector(next_tvb, pinfo, tree); } return tvb_reported_length(tvb); } static int dissect_bvlc(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_) { guint8 bvlc_type; guint ret = 0; bvlc_type = tvb_get_guint8(tvb, 0); /* * Simple sanity check - make sure the type is one we know about. */ if (try_val_to_str(bvlc_type, bvlc_types) == NULL) return 0; col_set_str(pinfo->cinfo, COL_PROTOCOL, "BVLC"); col_set_str(pinfo->cinfo, COL_INFO, "BACnet Virtual Link Control"); switch (bvlc_type) { case BACNET_IP_ANNEX_J: ret = dissect_ipv4_bvlc(tvb, pinfo, tree, data); break; case BACNET_IPV6_ANNEX_U: ret = dissect_ipv6_bvlc(tvb, pinfo, tree, data); break; } return ret; } static int dissect_bscvlc(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_) { proto_item *ti; proto_tree *bvlc_tree; tvbuff_t *next_tvb; gint offset; gint start; gint bvlc_length; gint packet_length; gint npdu_length; guint8 bvlc_function; guint8 bvlc_control; guint8 bvlc_result; guint8 hdr_byte; gint8 mac_buffer[16]; guint bvlc_message_id; guint idx; gboolean bMoreFlag; gboolean bDataFlag; proto_tree *subtree; /* Calculate length of BSCVLC block to get remaining payload length */ offset = 0; packet_length = tvb_reported_length_remaining(tvb, offset); if(packet_length < 4) return 0; /* reject */ /* Fix part of the header first */ bvlc_function = tvb_get_guint8(tvb, offset++); bvlc_control = tvb_get_guint8(tvb, offset++); bvlc_message_id = tvb_get_guint16(tvb, offset, ENC_BIG_ENDIAN); offset += 2; /* Variable part of the header next */ bvlc_length = offset; if ((bvlc_control & BSCVLC_CONTROL_ORIG_ADDRESS) != 0) bvlc_length += 6; if ((bvlc_control & BSCVLC_CONTROL_DEST_ADDRESS) != 0) bvlc_length += 6; if ((bvlc_control & BSCVLC_CONTROL_DEST_OPTION) != 0) { bMoreFlag = TRUE; while(tvb_reported_length_remaining(tvb, bvlc_length) > 0 && (hdr_byte = tvb_get_guint8(tvb, bvlc_length)) != 0 && bMoreFlag) { /* get flags and type... */ bMoreFlag= (hdr_byte & BSCVLC_HEADER_OPTION_MORE_OPTIONS); bDataFlag= (hdr_byte & BSCVLC_HEADER_OPTION_DATA); bvlc_length++; if(bDataFlag) { npdu_length = (gint)(tvb_get_guint8(tvb, bvlc_length++) << 8); npdu_length += (gint)tvb_get_guint8(tvb, bvlc_length++); bvlc_length += npdu_length; } } } if ((bvlc_control & BSCVLC_CONTROL_DATA_OPTION) != 0) { bMoreFlag = TRUE; while(tvb_reported_length_remaining(tvb, bvlc_length) > 0 && (hdr_byte = tvb_get_guint8(tvb, bvlc_length)) != 0 && bMoreFlag) { /* get flags and type... */ bMoreFlag= (hdr_byte & BSCVLC_HEADER_OPTION_MORE_OPTIONS); bDataFlag= (hdr_byte & BSCVLC_HEADER_OPTION_DATA); bvlc_length++; if(bDataFlag) { npdu_length = (gint)(tvb_get_guint8(tvb, bvlc_length++) << 8); npdu_length += (gint)tvb_get_guint8(tvb, bvlc_length++); bvlc_length += npdu_length; } } } /* Now add the BSCVLC payload size for specified function */ switch (bvlc_function) { case 0x00: /* BVLC-Result */ case 0x03: /* Address-Resolution-ACK */ case 0x0C: /* Proprietary-Message */ /* complete packet length because of optional present variable length error data but no length encoded for it in the structure of this frame */ bvlc_length = packet_length; break; case 0x02: /* Address-Resolution */ case 0x05: /* Advertisement-Solicitation */ case 0x08: /* Disconnect-Request */ case 0x09: /* Disconnect-ACK */ case 0x0A: /* Heartbeat-Request */ case 0x0B: /* Heartbeat-ACK */ /* No additional payload here */ break; case 0x04: /* Advertisement */ bvlc_length += 6; break; case 0x06: /* Connect-Request */ case 0x07: /* Connect-Accept */ bvlc_length += 26; break; case 0x01: /* Encapsulated-NPDU */ default: /* The additional payload will be decoded elsewhere */ break; } col_set_str(pinfo->cinfo, COL_PROTOCOL, "BSCVLC"); col_set_str(pinfo->cinfo, COL_INFO, "BACnet Secure Connect Virtual Link Control"); /* Put the BSCVLC Type and Message ID in the info column */ col_append_fstr(pinfo->cinfo, COL_INFO, " BSCVLC Function %s Message-ID %u", val_to_str_const(bvlc_function, bscvlc_function_names, "unknown"), bvlc_message_id); /* Fill the tree... */ offset = 0; ti = proto_tree_add_item(tree, proto_bscvlc, tvb, 0, bvlc_length, ENC_NA); bvlc_tree = proto_item_add_subtree(ti, ett_bvlc); proto_tree_add_uint(bvlc_tree, hf_bscvlc_function, tvb, offset, 1, bvlc_function); offset++; proto_tree_add_bitmask(bvlc_tree, tvb, offset, hf_bscvlc_control, ett_bscvlc_ctrl, bscvlc_control_flags, ENC_NA); offset ++; proto_tree_add_uint(bvlc_tree, hf_bscvlc_msg_id, tvb, offset, 2, bvlc_message_id); offset += 2; if ((bvlc_control & BSCVLC_CONTROL_ORIG_ADDRESS) != 0) { for(idx = 0; idx < 6; idx++) snprintf(&mac_buffer[idx * 2], sizeof(mac_buffer) - (idx * 2), "%02X", tvb_get_guint8(tvb, offset + idx)); col_append_fstr(pinfo->cinfo, COL_INFO, " SMAC %s", mac_buffer); proto_tree_add_item(bvlc_tree, hf_bscvlc_orig_vmac, tvb, offset, 6, ENC_NA); offset += 6; } if ((bvlc_control & BSCVLC_CONTROL_DEST_ADDRESS) != 0) { for(idx = 0; idx < 6; idx++) snprintf(&mac_buffer[idx * 2], sizeof(mac_buffer) - (idx * 2), "%02X", tvb_get_guint8(tvb, offset + idx)); col_append_fstr(pinfo->cinfo, COL_INFO, " DMAC %s", mac_buffer); proto_tree_add_item(bvlc_tree, hf_bscvlc_dest_vmac, tvb, offset, 6, ENC_NA); offset += 6; } if ((bvlc_control & BSCVLC_CONTROL_DEST_OPTION) != 0) { bMoreFlag = TRUE; while(tvb_reported_length_remaining(tvb, offset) > 0 && (hdr_byte = tvb_get_guint8(tvb, offset)) != 0 && bMoreFlag) { /* get flags and type... */ bMoreFlag= (hdr_byte & BSCVLC_HEADER_OPTION_MORE_OPTIONS); bDataFlag= (hdr_byte & BSCVLC_HEADER_OPTION_DATA); start = offset; offset++; if(bDataFlag) { npdu_length = (gint)(tvb_get_guint8(tvb, offset++) << 8); npdu_length += (gint)tvb_get_guint8(tvb, offset++); offset += npdu_length; } subtree = proto_tree_add_subtree_format(bvlc_tree, tvb, start, offset - start, ett_bscvlc_hdr, NULL, "%s", "Destination Options"); proto_tree_add_bitmask_value(subtree, tvb, start, hf_bscvlc_header, ett_bscvlc_hdr, bscvlc_header_flags, hdr_byte); if(bDataFlag) { proto_tree_add_item(subtree, hf_bscvlc_header_length, tvb, start + 1, 2, ENC_NA); proto_tree_add_item(subtree, hf_bscvlc_header_data, tvb, start + 3, npdu_length, ENC_NA); } } } if ((bvlc_control & BSCVLC_CONTROL_DATA_OPTION) != 0) { bMoreFlag = TRUE; while(tvb_reported_length_remaining(tvb, offset) > 0 && (hdr_byte = tvb_get_guint8(tvb, offset)) != 0 && bMoreFlag) { /* get flags and type... */ bMoreFlag= (hdr_byte & BSCVLC_HEADER_OPTION_MORE_OPTIONS); bDataFlag= (hdr_byte & BSCVLC_HEADER_OPTION_DATA); start = offset; offset++; if(bDataFlag) { npdu_length = (gint)(tvb_get_guint8(tvb, offset++) << 8); npdu_length += (gint)tvb_get_guint8(tvb, offset++); offset += npdu_length; } subtree = proto_tree_add_subtree_format(bvlc_tree, tvb, start, offset - start, ett_bscvlc_hdr, NULL, "%s", "Data Options"); proto_tree_add_bitmask_value(subtree, tvb, start, hf_bscvlc_header, ett_bscvlc_hdr, bscvlc_header_flags, hdr_byte); if(bDataFlag) { proto_tree_add_item(subtree, hf_bscvlc_header_length, tvb, start + 1, 2, ENC_NA); proto_tree_add_item(subtree, hf_bscvlc_header_data, tvb, start + 3, npdu_length, ENC_NA); } } } switch (bvlc_function) { case 0x02: /* Address-Resolution */ case 0x05: /* Advertisement-Solicitation */ case 0x08: /* Disconnect-Request */ case 0x09: /* Disconnect-ACK */ case 0x0A: /* Heartbeat-Request */ case 0x0B: /* Heartbeat-ACK */ break; case 0x00: /* BVLC-Result */ subtree = proto_tree_add_subtree_format(bvlc_tree, tvb, offset, packet_length - offset, ett_bscvlc_hdr, NULL, "%s", "BVLC-Result"); proto_tree_add_item(subtree, hf_bscvlc_function, tvb, offset, 1, ENC_NA); offset++; proto_tree_add_item(subtree, hf_bscvlc_result, tvb, offset, 1, ENC_NA); bvlc_result = tvb_get_guint8(tvb, offset); offset++; col_append_fstr(pinfo->cinfo, COL_INFO, " %s", val_to_str_const(bvlc_result, bscvlc_result_names, "unknown")); if(bvlc_result) { proto_tree_add_item(subtree, hf_bscvlc_header_marker, tvb, offset, 1, ENC_NA); offset++; proto_tree_add_item(subtree, hf_bscvlc_error_class, tvb, offset, 2, ENC_NA); offset += 2; proto_tree_add_item(subtree, hf_bscvlc_error_code, tvb, offset, 2, ENC_NA); offset += 2; proto_tree_add_item(subtree, hf_bscvlc_result_data, tvb, offset, packet_length - offset, ENC_NA); } /* Force and of packet */ offset = packet_length; break; case 0x03: /* Address-Resolution-ACK */ subtree = proto_tree_add_subtree_format(bvlc_tree, tvb, offset, packet_length - offset, ett_bscvlc_hdr, NULL, "%s", "Address-Resolution-ACK"); proto_tree_add_item(subtree, hf_bscvlc_uris, tvb, offset, packet_length - offset, ENC_NA); /* Force and of packet */ offset = packet_length; break; case 0x04: /* Advertisement */ subtree = proto_tree_add_subtree_format(bvlc_tree, tvb, offset, packet_length - offset, ett_bscvlc_hdr, NULL, "%s", "Advertisement"); proto_tree_add_item(subtree, hf_bscvlc_hub_conn_state, tvb, offset, 1, ENC_NA); offset++; proto_tree_add_item(subtree, hf_bscvlc_accept_conns, tvb, offset, 1, ENC_NA); offset++; proto_tree_add_item(subtree, hf_bscvlc_max_bvlc_length, tvb, offset, 2, ENC_NA); offset += 2; proto_tree_add_item(subtree, hf_bscvlc_max_npdu_length, tvb, offset, 2, ENC_NA); offset += 2; break; case 0x06: /* Connect-Request */ subtree = proto_tree_add_subtree_format(bvlc_tree, tvb, offset, packet_length - offset, ett_bscvlc_hdr, NULL, "%s", "Connect-Request"); proto_tree_add_item(subtree, hf_bscvlc_connect_vmac, tvb, offset, 6, ENC_NA); offset += 6; proto_tree_add_item(subtree, hf_bscvlc_connect_uuid, tvb, offset, 16, ENC_NA); offset += 16; proto_tree_add_item(subtree, hf_bscvlc_max_bvlc_length, tvb, offset, 2, ENC_NA); offset += 2; proto_tree_add_item(subtree, hf_bscvlc_max_npdu_length, tvb, offset, 2, ENC_NA); offset += 2; break; case 0x07: /* Connect-Accept */ subtree = proto_tree_add_subtree_format(bvlc_tree, tvb, offset, packet_length - offset, ett_bscvlc_hdr, NULL, "%s", "Connect-Accept"); proto_tree_add_item(subtree, hf_bscvlc_connect_vmac, tvb, offset, 6, ENC_NA); offset += 6; proto_tree_add_item(subtree, hf_bscvlc_connect_uuid, tvb, offset, 16, ENC_NA); offset += 16; proto_tree_add_item(subtree, hf_bscvlc_max_bvlc_length, tvb, offset, 2, ENC_NA); offset += 2; proto_tree_add_item(subtree, hf_bscvlc_max_npdu_length, tvb, offset, 2, ENC_NA); offset += 2; break; case 0x0C: /* Proprietary-Message */ subtree = proto_tree_add_subtree_format(bvlc_tree, tvb, offset, packet_length - offset, ett_bscvlc_hdr, NULL, "%s", "Proprietary-Message"); proto_tree_add_item(subtree, hf_bscvlc_vendor_id, tvb, offset, 2, ENC_NA); offset += 2; proto_tree_add_item(subtree, hf_bscvlc_proprietary_opt_type, tvb, offset, 1, ENC_NA); offset++; proto_tree_add_item(subtree, hf_bscvlc_proprietary_data, tvb, offset, packet_length - offset, ENC_NA); /* Force and of packet */ offset = packet_length; break; case 0x01: /* Encapsulated-NPDU */ default: /* Here we assume additional payload belongs to upper layers and will be decoded later */ break; } /* Let the remaining frame to be decoded elsewhere */ npdu_length = packet_length - offset; next_tvb = tvb_new_subset_length_caplen(tvb, offset, -1, npdu_length); /* Code from Guy Harris */ if (!dissector_try_uint(bscvlc_dissector_table, bvlc_function, next_tvb, pinfo, tree)) { /* Unknown function - dissect the paylod as data */ call_data_dissector(next_tvb, pinfo, tree); } return tvb_reported_length(tvb); } void proto_register_bvlc(void) { static hf_register_info hf[] = { { &hf_bvlc_type, { "Type", "bvlc.type", FT_UINT8, BASE_HEX, VALS(bvlc_types), 0, NULL, HFILL } }, { &hf_bvlc_function, { "Function", "bvlc.function", FT_UINT8, BASE_HEX, VALS(bvlc_function_names), 0, "BVLC Function", HFILL } }, { &hf_bvlc_ipv6_function, { "Function", "bvlc.function_ipv6", FT_UINT8, BASE_HEX, VALS(bvlc_ipv6_function_names), 0, "BVLC Function IPV6", HFILL } }, { &hf_bvlc_length, { "BVLC-Length", "bvlc.length", FT_UINT16, BASE_DEC, NULL, 0, "Length of BVLC", HFILL } }, { &hf_bvlc_virt_source, { "BVLC-Virtual-Source", "bvlc.virtual_source", FT_UINT24, BASE_DEC_HEX, NULL, 0, "Virtual source address of BVLC", HFILL } }, { &hf_bvlc_virt_dest, { "BVLC-Virtual-Destination", "bvlc.virtual_dest", FT_UINT24, BASE_DEC_HEX, NULL, 0, "Virtual destination address of BVLC", HFILL } }, { &hf_bvlc_result_ip4, { "Result", "bvlc.result", FT_UINT16, BASE_HEX, VALS(bvlc_result_names), 0, "Result Code", HFILL } }, { &hf_bvlc_result_ip6, { "Result", "bvlc.result", FT_UINT16, BASE_HEX, VALS(bvlc_ipv6_result_names), 0, "Result Code", HFILL } }, { &hf_bvlc_bdt_ip, { "IP", "bvlc.bdt_ip", FT_IPv4, BASE_NONE, NULL, 0, "BDT IP", HFILL } }, { &hf_bvlc_bdt_port, { "Port", "bvlc.bdt_port", FT_UINT16, BASE_DEC, NULL, 0, "BDT Port", HFILL } }, { &hf_bvlc_bdt_mask, { "Mask", "bvlc.bdt_mask", FT_BYTES, BASE_NONE, NULL, 0, "BDT Broadcast Distribution Mask", HFILL } }, { &hf_bvlc_reg_ttl, { "TTL", "bvlc.reg_ttl", FT_UINT16, BASE_DEC, NULL, 0, "Foreign Device Time To Live", HFILL } }, { &hf_bvlc_fdt_ip, { "IP", "bvlc.fdt_ip", FT_IPv4, BASE_NONE, NULL, 0, "FDT IP", HFILL } }, { &hf_bvlc_fdt_ipv6, { "IP", "bvlc.fdt_ipv6", FT_IPv6, BASE_NONE, NULL, 0, "FDT IP", HFILL } }, { &hf_bvlc_fdt_port, { "Port", "bvlc.fdt_port", FT_UINT16, BASE_DEC, NULL, 0, "FDT Port", HFILL } }, { &hf_bvlc_fdt_ttl, { "TTL", "bvlc.fdt_ttl", FT_UINT16, BASE_DEC, NULL, 0, "Foreign Device Time To Live", HFILL } }, { &hf_bvlc_fdt_timeout, { "Timeout", "bvlc.fdt_timeout", FT_UINT16, BASE_DEC, NULL, 0, "Foreign Device Timeout (seconds)", HFILL } }, { &hf_bvlc_fwd_ip, { "IP", "bvlc.fwd_ip", FT_IPv4, BASE_NONE, NULL, 0, "FWD IP", HFILL } }, { &hf_bvlc_fwd_port, { "Port", "bvlc.fwd_port", FT_UINT16, BASE_DEC, NULL, 0, "FWD Port", HFILL } }, { &hf_bvlc_orig_source_addr, { "IP", "bvlc.orig_source_addr", FT_IPv6, BASE_NONE, NULL, 0, "ORIG IP", HFILL } }, { &hf_bvlc_orig_source_port, { "Port", "bvlc.orig_source_port", FT_UINT16, BASE_DEC, NULL, 0, "ORIG Port", HFILL } }, }; static gint *ett[] = { &ett_bvlc, &ett_bdt, &ett_fdt, }; static hf_register_info bsc_hf[] = { { &hf_bscvlc_control, { "Control", "bscvlc.control", FT_UINT8, BASE_HEX, NULL, 0, "BSCVLC Control", HFILL } }, { &hf_bscvlc_control_data_option, { "Data Option", "bscvlc.control_data_option", FT_BOOLEAN, 8, TFS(&control_data_option_set_high), BSCVLC_CONTROL_DATA_OPTION, "BSCVLC Control", HFILL } }, { &hf_bscvlc_control_destination_option, { "Destination Option", "bscvlc.control_dest_option", FT_BOOLEAN, 8, TFS(&control_destination_option_set_high), BSCVLC_CONTROL_DEST_OPTION, "BSCVLC Control", HFILL } }, { &hf_bscvlc_control_destination_address, { "Destination Address","bscvlc.control_dest_address", FT_BOOLEAN, 8, TFS(&control_destination_address_set_high), BSCVLC_CONTROL_DEST_ADDRESS, "BSCVLC Control", HFILL } }, { &hf_bscvlc_control_origin_address, { "Origin Address", "bscvlc.control_orig_address", FT_BOOLEAN, 8, TFS(&control_orig_address_set_high), BSCVLC_CONTROL_ORIG_ADDRESS, "BSCVLC Control", HFILL } }, { &hf_bscvlc_control_reserved, { "Reserved", "bscvlc.control_reserved", FT_BOOLEAN, 8, TFS(&control_reserved_set_high), BSCVLC_CONTROL_RESERVED, "BSCVLC Control", HFILL } }, { &hf_bscvlc_header, { "Header Data Length", "bscvlc.header", FT_UINT8, BASE_HEX, NULL, 0, "BSCVLC Header Control Data", HFILL } }, { &hf_bscvlc_header_marker, { "Header Error Marker","bscvlc.header_error_marker", FT_UINT8, BASE_HEX, NULL, 0, "BSCVLC Header Error Marker", HFILL } }, { &hf_bscvlc_header_length, { "Header Data Length", "bscvlc.header_length", FT_UINT16, BASE_DEC, NULL, 0, "BSCVLC Header Data Length", HFILL } }, { &hf_bscvlc_header_data, { "Header Data", "bscvlc.header_data", FT_BYTES, BASE_NONE, NULL, 0, "BSCVLC Header Option", HFILL } }, { &hf_bscvlc_header_opt_type, { "Header Type", "bscvlc.header_type", FT_UINT8, BASE_HEX, VALS(bscvlc_header_type_names), BSCVLC_HEADER_OPTION_TYPE, "BSCVLC Header Option", HFILL } }, { &hf_bscvlc_header_opt_data, { "Header Data", "bscvlc.header_data_present", FT_BOOLEAN, 8, TFS(&header_opt_data_set_high), BSCVLC_HEADER_OPTION_DATA, "BSCVLC Header Option", HFILL } }, { &hf_bscvlc_header_opt_must_understand, { "Header Must Understand","bscvlc.header_understand", FT_BOOLEAN, 8, TFS(&header_opt_must_understand_set_high), BSCVLC_HEADER_OPTION_MUST_UNDERSTAND, "BSCVLC Header Option", HFILL } }, { &hf_bscvlc_header_opt_more, { "Header More", "bscvlc.header_more", FT_BOOLEAN, 8, TFS(&header_opt_more_set_high), BSCVLC_HEADER_OPTION_MORE_OPTIONS, "BSCVLC Header Option", HFILL } }, { &hf_bscvlc_vendor_id, { "Vendor ID", "bscvlc.vendor_id", FT_UINT16, BASE_HEX, NULL, 0, "BSCVLC Vendor ID", HFILL } }, { &hf_bscvlc_proprietary_opt_type, { "Proprietary Type", "bscvlc.proprietary_type", FT_UINT8, BASE_HEX, NULL, 0, "BSCVLC Proprietary Type", HFILL } }, { &hf_bscvlc_proprietary_data, { "Proprietary Data", "bscvlc.proprietary_data", FT_BYTES, BASE_NONE, NULL, 0, "BSCVLC Proprietary Data", HFILL } }, { &hf_bscvlc_hub_conn_state, { "Hub Connection Status","bscvlc.hub_conn_state", FT_UINT8, BASE_HEX, VALS(bscvlc_hub_conn_state_names), 0, "BSCVLC Hub Connection Status", HFILL } }, { &hf_bscvlc_accept_conns, { "Hub Accepts Connections","bscvlc.accept_conns", FT_UINT8, BASE_HEX, VALS(bscvlc_hub_accept_conns_names), 0, "BSCVLC Accepts Connections", HFILL } }, { &hf_bscvlc_max_bvlc_length, { "Max. BVLC Length", "bscvlc.max_bvlc_length", FT_UINT16, BASE_DEC, NULL, 0, "Max Supported BVLC Length", HFILL } }, { &hf_bscvlc_max_npdu_length, { "Max. NPDU Length", "bscvlc.max_npdu_length", FT_UINT16, BASE_DEC, NULL, 0, "Max Supported NPDU Length", HFILL } }, { &hf_bscvlc_function, { "Function", "bscvlc.function", FT_UINT8, BASE_HEX, VALS(bscvlc_function_names), 0, "BSCVLC Function", HFILL } }, { &hf_bscvlc_result, { "Result", "bscvlc.result", FT_UINT8, BASE_HEX, VALS(bscvlc_result_names), 0, "Result Code", HFILL } }, { &hf_bscvlc_error_class, { "Error Class", "bscvlc.error_class", FT_UINT32, BASE_DEC, VALS(BACnetErrorClass), 0, NULL, HFILL } }, { &hf_bscvlc_error_code, { "Error Code", "bscvlc.error_code", FT_UINT32, BASE_DEC, VALS(BACnetErrorCode), 0, NULL, HFILL } }, { &hf_bscvlc_result_data, { "Result Data", "bscvlc.result_data", FT_BYTES, BASE_NONE, NULL, 0, "BSCVLC Result Data", HFILL } }, { &hf_bscvlc_uris, { "URI's", "bscvlc.uris", FT_BYTES, BASE_NONE, NULL, 0, "BSCVLC Address URI's", HFILL } }, { &hf_bscvlc_msg_id, { "Message ID", "bscvlc.msgid", FT_UINT16, BASE_DEC, NULL, 0, "BSCVLC Message ID", HFILL } }, { &hf_bscvlc_orig_vmac, { "SVMAC", "bscvlc.orig_virtual_address", FT_BYTES, BASE_NONE, NULL, 0, "ORIG VMAC", HFILL } }, { &hf_bscvlc_dest_vmac, { "DVMAC", "bscvlc.dest_virtual_address", FT_BYTES, BASE_NONE, NULL, 0, "DEST VMAC", HFILL } }, { &hf_bscvlc_connect_vmac, { "Connecting VMAC", "bscvlc.connect_virtual_address", FT_BYTES, BASE_NONE, NULL, 0, "BSCVLC Connecting VMAC", HFILL } }, { &hf_bscvlc_connect_uuid, { "Connecting UUID", "bscvlc.connect_uuid", FT_BYTES, BASE_NONE, NULL, 0, "BSCVLC Connecting UUID", HFILL } }, }; static gint *bsc_ett[] = { &ett_bscvlc, &ett_bscvlc_ctrl, &ett_bscvlc_hdr }; proto_bvlc = proto_register_protocol("BACnet Virtual Link Control", "BVLC", "bvlc"); proto_register_field_array(proto_bvlc, hf, array_length(hf)); proto_register_subtree_array(ett, array_length(ett)); bvlc_handle = register_dissector("bvlc", dissect_bvlc, proto_bvlc); bvlc_dissector_table = register_dissector_table("bvlc.function", "BVLC Function", proto_bvlc, FT_UINT8, BASE_HEX); bvlc_ipv6_dissector_table = register_dissector_table("bvlc.function_ipv6", "BVLC Function IPV6", proto_bvlc, FT_UINT8, BASE_HEX); proto_bscvlc = proto_register_protocol("BACnet Secure Connect Virtual Link Control", "BSCVLC", "bscvlc"); proto_register_field_array(proto_bscvlc, bsc_hf, array_length(bsc_hf)); proto_register_subtree_array(bsc_ett, array_length(bsc_ett)); bscvlc_handle = register_dissector("bscvlc", dissect_bscvlc, proto_bscvlc); bscvlc_dissector_table = register_dissector_table("bscvlc.function", "BSCVLC Function", proto_bscvlc, FT_UINT8, BASE_HEX); } void proto_reg_handoff_bvlc(void) { dissector_add_uint_with_preference("udp.port", BVLC_UDP_PORT, bvlc_handle); dissector_add_string("ws.protocol", "hub.bsc.bacnet.org", bscvlc_handle); dissector_add_string("ws.protocol", "dc.bsc.bacnet.org", bscvlc_handle); } /* * Editor modelines - https://www.wireshark.org/tools/modelines.html * * Local variables: * c-basic-offset: 8 * tab-width: 8 * indent-tabs-mode: t * End: * * vi: set shiftwidth=8 tabstop=8 noexpandtab: * :indentSize=8:tabSize=8:noTabs=false: */