--- /dev/null
+/* packet-iua.c
+ * Routines for ISDN Q.921-User Adaptation Layer dissection
+ * It is hopefully (needs testing) compilant to
+ * http://www.ietf.org/internet-drafts/draft-ietf-sigtran-iua-10.txt
+ * To do: - clean up the code
+ * - provide better handling of length parameters
+ * - think about making use of the existing Q.931 dissector
+ *
+ * Copyright 2000, Michael Tüxen <Michael.Tuexen@icn.siemens.de>
+ *
+ * $Id: packet-iua.c,v 1.1 2001/01/11 16:46:21 gram Exp $
+ *
+ * Ethereal - Network traffic analyzer
+ * By Gerald Combs <gerald@unicom.net>
+ * Copyright 1998 Gerald Combs
+ *
+ * Copied from README.developer
+ *
+ * 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+
+
+#ifdef HAVE_SYS_TYPES_H
+# include <sys/types.h>
+#endif
+
+#ifdef HAVE_NETINET_IN_H
+# include <netinet/in.h>
+#endif
+
+#include <string.h>
+#include <glib.h>
+
+#ifdef NEED_SNPRINTF_H
+# include "snprintf.h"
+#endif
+
+#include "packet.h"
+#include "packet-ip.h"
+
+
+#define SCTP_PORT_IUA 9900
+
+#define VERSION_LENGTH 1
+#define RESERVED_LENGTH 1
+#define MESSAGE_CLASS_LENGTH 1
+#define MESSAGE_TYPE_LENGTH 1
+#define MESSAGE_LENGTH_LENGTH 4
+#define COMMON_HEADER_LENGTH (VERSION_LENGTH + RESERVED_LENGTH + MESSAGE_CLASS_LENGTH + \
+ MESSAGE_TYPE_LENGTH + MESSAGE_LENGTH_LENGTH)
+
+#define VERSION_OFFSET 0
+#define RESERVED_OFFSET (VERSION_OFFSET + VERSION_LENGTH)
+#define MESSAGE_CLASS_OFFSET (RESERVED_OFFSET + RESERVED_LENGTH)
+#define MESSAGE_TYPE_OFFSET (MESSAGE_CLASS_OFFSET + MESSAGE_CLASS_LENGTH)
+#define MESSAGE_LENGTH_OFFSET (MESSAGE_TYPE_OFFSET + MESSAGE_TYPE_LENGTH)
+
+#define PROTOCOL_VERSION_RELEASE_1 1
+
+static const value_string iua_protocol_version_values[] = {
+ { PROTOCOL_VERSION_RELEASE_1, "Release 1" },
+ { 0, NULL } };
+
+#define MESSAGE_CLASS_MGMT_MESSAGE 0
+#define MESSAGE_CLASS_TFER_MESSAGE 1
+#define MESSAGE_CLASS_SSNM_MESSAGE 2
+#define MESSAGE_CLASS_ASPSM_MESSAGE 3
+#define MESSAGE_CLASS_ASPTM_MESSAGE 4
+#define MESSAGE_CLASS_QPTM_MESSAGE 5
+#define MESSAGE_CLASS_MAUP_MESSAGE 6
+#define MESSAGE_CLASS_CL_SUA_MESSAGE 7
+#define MESSAGE_CLASS_CO_SUA_MESSAGE 8
+
+static const value_string iua_message_class_values[] = {
+ { MESSAGE_CLASS_MGMT_MESSAGE, "Management messages" },
+ { MESSAGE_CLASS_TFER_MESSAGE, "Transfer messages" },
+ { MESSAGE_CLASS_SSNM_MESSAGE, "SS7 signalling network management messages" },
+ { MESSAGE_CLASS_ASPSM_MESSAGE, "ASP state maintenance messages" },
+ { MESSAGE_CLASS_ASPTM_MESSAGE, "ASP traffic maintenance messages" },
+ { MESSAGE_CLASS_QPTM_MESSAGE, "Q.921/Q.931 boundary primitive transport messages" },
+ { MESSAGE_CLASS_MAUP_MESSAGE, "MTP2 user adaptation messages" },
+ { MESSAGE_CLASS_CL_SUA_MESSAGE, "Connectionless messages (SUA)" },
+ { MESSAGE_CLASS_CO_SUA_MESSAGE, "Connection-oriented messages (SUA)" },
+ { 0, NULL } };
+
+/* message types for MGMT messages */
+#define MESSAGE_TYPE_ERR 0
+#define MESSAGE_TYPE_NTFY 1
+#define MESSAGE_TYPE_TEI_STATUS_REQ 2
+#define MESSAGE_TYPE_TEI_STATUS_CON 3
+#define MESSAGE_TYPE_TEI_STATUS_IND 4
+
+/* message types for ASPSM messages */
+#define MESSAGE_TYPE_UP 1
+#define MESSAGE_TYPE_DOWN 2
+#define MESSAGE_TYPE_BEAT 3
+#define MESSAGE_TYPE_UP_ACK 4
+#define MESSAGE_TYPE_DOWN_ACK 5
+#define MESSAGE_TYPE_BEAT_ACK 6
+
+/* message types for ASPTM messages */
+#define MESSAGE_TYPE_ACTIVE 1
+#define MESSAGE_TYPE_INACTIVE 2
+#define MESSAGE_TYPE_ACTIVE_ACK 3
+#define MESSAGE_TYPE_INACTIVE_ACK 4
+
+/* message types for QPTM messages */
+#define MESSAGE_TYPE_DATA_REQUEST 1
+#define MESSAGE_TYPE_DATA_INDICATION 2
+#define MESSAGE_TYPE_UNIT_DATA_REQUEST 3
+#define MESSAGE_TYPE_UNIT_DATA_INDICATION 4
+#define MESSAGE_TYPE_ESTABLISH_REQUEST 5
+#define MESSAGE_TYPE_ESTABLISH_CONFIRM 6
+#define MESSAGE_TYPE_ESTABLISH_INDICATION 7
+#define MESSAGE_TYPE_RELEASE_REQUEST 8
+#define MESSAGE_TYPE_RELEASE_CONFIRM 9
+#define MESSAGE_TYPE_RELEASE_INDICATION 10
+
+
+static const value_string iua_message_class_type_values[] = {
+ { MESSAGE_CLASS_MGMT_MESSAGE * 256 + MESSAGE_TYPE_ERR, "Error" },
+ { MESSAGE_CLASS_MGMT_MESSAGE * 256 + MESSAGE_TYPE_NTFY, "Notify" },
+ { MESSAGE_CLASS_MGMT_MESSAGE * 256 + MESSAGE_TYPE_TEI_STATUS_REQ, "TEI status request" },
+ { MESSAGE_CLASS_MGMT_MESSAGE * 256 + MESSAGE_TYPE_TEI_STATUS_CON, "TEI status confirmation" },
+ { MESSAGE_CLASS_MGMT_MESSAGE * 256 + MESSAGE_TYPE_TEI_STATUS_IND, "TEI status indication" },
+ { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_UP, "ASP up" },
+ { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_DOWN, "ASP down" },
+ { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_BEAT, "Heartbeat" },
+ { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_UP_ACK, "ASP up ack" },
+ { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_DOWN_ACK, "ASP down ack" },
+ { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_BEAT_ACK, "Heartbeat ack" },
+ { MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_ACTIVE , "ASP active" },
+ { MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_INACTIVE , "ASP inactive" },
+ { MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_ACTIVE_ACK , "ASP active ack" },
+ { MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_INACTIVE_ACK , "ASP inactive ack" },
+ { MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_DATA_REQUEST, "Data request" },
+ { MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_DATA_INDICATION, "Data indication" },
+ { MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_UNIT_DATA_REQUEST, "Unit data request" },
+ { MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_UNIT_DATA_INDICATION, "Unit data indication" },
+ { MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_ESTABLISH_REQUEST, "Establish request" },
+ { MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_ESTABLISH_CONFIRM, "Establish confirmation" },
+ { MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_ESTABLISH_INDICATION, "Establish indication" },
+ { MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_RELEASE_REQUEST, "Release request" },
+ { MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_RELEASE_CONFIRM, "Release confirmation" },
+ { MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_RELEASE_INDICATION, "Release indication" },
+ { 0, NULL } };
+
+static const value_string iua_message_class_type_acro_values[] = {
+ { MESSAGE_CLASS_MGMT_MESSAGE * 256 + MESSAGE_TYPE_ERR, "ERR" },
+ { MESSAGE_CLASS_MGMT_MESSAGE * 256 + MESSAGE_TYPE_NTFY, "NTFY" },
+ { MESSAGE_CLASS_MGMT_MESSAGE * 256 + MESSAGE_TYPE_TEI_STATUS_REQ, "TEI_STAT_REQ" },
+ { MESSAGE_CLASS_MGMT_MESSAGE * 256 + MESSAGE_TYPE_TEI_STATUS_CON, "TEI_STAT_CON" },
+ { MESSAGE_CLASS_MGMT_MESSAGE * 256 + MESSAGE_TYPE_TEI_STATUS_IND, "TEI_STAT_IND" },
+ { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_UP, "ASP_UP" },
+ { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_DOWN, "ASP_DOWN" },
+ { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_BEAT, "BEAT" },
+ { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_UP_ACK, "ASP_UP_ACK" },
+ { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_DOWN_ACK, "ASP_DOWN_ACK" },
+ { MESSAGE_CLASS_ASPSM_MESSAGE * 256 + MESSAGE_TYPE_BEAT_ACK, "BEAT_ACK" },
+ { MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_ACTIVE , "ASP_ACTIVE" },
+ { MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_INACTIVE , "ASP_INACTIVE" },
+ { MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_ACTIVE_ACK , "ASP_ACTIVE_ACK" },
+ { MESSAGE_CLASS_ASPTM_MESSAGE * 256 + MESSAGE_TYPE_INACTIVE_ACK , "ASP_INACTIVE_ACK" },
+ { MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_DATA_REQUEST, "DATA_REQ" },
+ { MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_DATA_INDICATION, "DATA_IND" },
+ { MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_UNIT_DATA_REQUEST, "U_DATA_REQ" },
+ { MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_UNIT_DATA_INDICATION, "U_DATA_IND" },
+ { MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_ESTABLISH_REQUEST, "EST_REQ" },
+ { MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_ESTABLISH_CONFIRM, "EST_CON" },
+ { MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_ESTABLISH_INDICATION, "EST_IND" },
+ { MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_RELEASE_REQUEST, "REL_REQ" },
+ { MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_RELEASE_CONFIRM, "REL_CON" },
+ { MESSAGE_CLASS_QPTM_MESSAGE * 256 + MESSAGE_TYPE_RELEASE_INDICATION, "REL_IND" },
+ { 0, NULL } };
+
+#define PARAMETER_TAG_LENGTH 2
+#define PARAMETER_LENGTH_LENGTH 2
+#define PARAMETER_HEADER_LENGTH (PARAMETER_TAG_LENGTH + PARAMETER_LENGTH_LENGTH)
+
+#define PARAMETER_TAG_OFFSET 0
+#define PARAMETER_LENGTH_OFFSET (PARAMETER_TAG_OFFSET + PARAMETER_TAG_LENGTH)
+#define PARAMETER_VALUE_OFFSET (PARAMETER_LENGTH_OFFSET + PARAMETER_LENGTH_LENGTH)
+#define PARAMETER_HEADER_OFFSET PARAMETER_TAG_OFFSET
+
+#define INT_INTERFACE_IDENTIFIER_PARAMETER_TAG 0x01
+#define TEXT_INTERFACE_IDENTIFIER_PARAMETER_TAG 0x03
+#define INFO_PARAMETER_TAG 0x04
+#define DLCI_PARAMETER_TAG 0x05
+#define DIAGNOSTIC_INFORMATION_PARAMETER_TAG 0x07
+#define INTEGER_RANGE_INTERFACE_IDENTIFIER_PARAMETER_TAG 0x08
+#define HEARTBEAT_DATA_PARAMETER_TAG 0x09
+#define ASP_REASON_PARAMETER_TAG 0x0a
+#define TRAFFIC_MODE_TYPE_PARAMETER_TAG 0x0b
+#define ERROR_CODE_PARAMETER_TAG 0x0c
+#define STATUS_TYPE_INDENTIFICATION_PARAMETER_TAG 0x0d
+#define PROTOCOL_DATA_PARAMETER_TAG 0x0e
+#define RELEASE_REASON_PARAMETER_TAG 0x0f
+#define TEI_STATUS_PARAMETER_TAG 0x10
+
+static const value_string iua_parameter_tag_values[] = {
+ { INT_INTERFACE_IDENTIFIER_PARAMETER_TAG, "Integer interface identifier" },
+ { TEXT_INTERFACE_IDENTIFIER_PARAMETER_TAG, "Text interface identifier" },
+ { INFO_PARAMETER_TAG, "Info" },
+ { DLCI_PARAMETER_TAG, "DLCI" },
+ { DIAGNOSTIC_INFORMATION_PARAMETER_TAG, "Diagnostic information" },
+ { INTEGER_RANGE_INTERFACE_IDENTIFIER_PARAMETER_TAG, "Integer range interface identifier" },
+ { HEARTBEAT_DATA_PARAMETER_TAG, "Hearbeat data" },
+ { ASP_REASON_PARAMETER_TAG, "Reason" },
+ { TRAFFIC_MODE_TYPE_PARAMETER_TAG, "Traffic mode type" },
+ { ERROR_CODE_PARAMETER_TAG, "Error code" },
+ { STATUS_TYPE_INDENTIFICATION_PARAMETER_TAG, "Status type/identification" },
+ { PROTOCOL_DATA_PARAMETER_TAG, "Protocol data" },
+ { RELEASE_REASON_PARAMETER_TAG, "Reason" },
+ { TEI_STATUS_PARAMETER_TAG, "TEI status" },
+ { 0, NULL } };
+
+
+#define INT_INTERFACE_IDENTIFIER_OFFSET PARAMETER_VALUE_OFFSET
+#define INT_INTERFACE_IDENTIFIER_LENGTH 4
+
+#define TEXT_INTERFACE_IDENTIFIER_OFFSET PARAMETER_VALUE_OFFSET
+#define TEXT_INTERFACE_IDENTIFIER_LENGTH 4
+
+#define INFO_STRING_OFFSET PARAMETER_VALUE_OFFSET
+
+#define START_LENGTH 4
+#define END_LENGTH 4
+#define START_OFFSET 0
+#define END_OFFSET (START_OFFSET + START_LENGTH)
+
+#define DLCI_LENGTH 2
+#define DLCI_OFFSET PARAMETER_VALUE_OFFSET
+
+#define ZERO_BIT_MASK 0x80
+#define SPARE_BIT_MASK 0x40
+#define SAPI_MASK 0x3f
+#define ONE_BIT_MASK 0x80
+#define TEI_MASK 0x7f
+
+#define ASP_MGMT_REASON 1
+
+static const value_string iua_asp_reason_values[] = {
+ { ASP_MGMT_REASON, "Management inhibit" },
+ { 0, NULL } };
+
+#define ASP_REASON_LENGTH 4
+#define ASP_REASON_OFFSET PARAMETER_VALUE_OFFSET
+
+#define OVER_RIDE_TRAFFIC_MODE_TYPE 1
+#define LOAD_SHARE_TRAFFIC_MODE_TYPE 2
+
+static const value_string iua_traffic_mode_type_values[] = {
+ { OVER_RIDE_TRAFFIC_MODE_TYPE, "Over-ride" },
+ { LOAD_SHARE_TRAFFIC_MODE_TYPE, "Load-share" },
+ { 0, NULL } };
+
+#define TRAFFIC_MODE_TYPE_LENGTH 4
+#define TRAFFIC_MODE_TYPE_OFFSET PARAMETER_VALUE_OFFSET
+
+#define INVALID_VERSION_ERROR 0x01
+#define INVALID_INTERFACE_IDENTIFIER_ERROR 0x02
+#define UNSUPPORTED_MESSAGE_CLASS_ERROR 0x03
+#define UNSUPPORTED_MESSAGE_TYPE_ERROR 0x04
+#define UNSUPPORTED_TRAFFIC_HANDLING_MODE_ERROR 0x05
+#define UNEXPECTED_MESSAGE_ERROR 0x06
+#define PROTOCOL_ERROR 0x07
+#define UNSUPPORTED_INTERFACE_IDENTIFIER_TYPE_ERROR 0x08
+#define INVALID_STREAM_IDENTIFIER_ERROR 0x09
+#define UNASSIGNED_TEI_ERROR 0x0a
+#define UNRECOGNIZED_SAPI_ERROR 0x0b
+#define INVALID_TEI_SAPI_COMBINATION 0x0c
+
+static const value_string iua_error_code_values[] = {
+ { INVALID_VERSION_ERROR, "Invalid version" },
+ { INVALID_INTERFACE_IDENTIFIER_ERROR, "Invalid interface identifier" },
+ { UNSUPPORTED_MESSAGE_CLASS_ERROR, "Unsuported message class" },
+ { UNSUPPORTED_MESSAGE_TYPE_ERROR, "Unsupported message type" },
+ { UNSUPPORTED_TRAFFIC_HANDLING_MODE_ERROR, "Unsupported traffic handling mode" },
+ { UNEXPECTED_MESSAGE_ERROR, "Unexpected message" },
+ { PROTOCOL_ERROR, "Protocol error" },
+ { UNSUPPORTED_INTERFACE_IDENTIFIER_TYPE_ERROR, "Unsupported interface identifier type" },
+ { INVALID_STREAM_IDENTIFIER_ERROR, "Invalid stream identifier" },
+ { UNASSIGNED_TEI_ERROR, "Unassigned TEI" },
+ { UNRECOGNIZED_SAPI_ERROR, "Unrecognized SAPI" },
+ { INVALID_TEI_SAPI_COMBINATION, "Invalid TEI/SAPI combination" },
+ { 0, NULL } };
+
+#define ERROR_CODE_LENGTH 4
+#define ERROR_CODE_OFFSET PARAMETER_VALUE_OFFSET
+
+#define ASP_STATE_CHANGE_STATUS_TYPE 0x01
+#define OTHER_STATUS_TYPE 0x02
+
+static const value_string iua_status_type_values[] = {
+ { ASP_STATE_CHANGE_STATUS_TYPE, "Application server state change" },
+ { OTHER_STATUS_TYPE, "Other" },
+ { 0, NULL } };
+
+#define AS_DOWN_STATUS_IDENT 0x01
+#define AS_INACTIVE_STATUS_IDENT 0x02
+#define AS_ACTIVE_STATUS_IDENT 0x03
+#define AS_PENDING_STATUS_IDENT 0x04
+
+#define INSUFFICIENT_ASP_RESOURCES_STATUS_IDENT 0x01
+#define ALTERNATE_ASP_ACTIVE_STATUS_IDENT 0x02
+
+static const value_string iua_status_type_ident_values[] = {
+ { ASP_STATE_CHANGE_STATUS_TYPE * 256 * 256 + AS_DOWN_STATUS_IDENT, "Application server down" },
+ { ASP_STATE_CHANGE_STATUS_TYPE * 256 * 256 + AS_INACTIVE_STATUS_IDENT, "Application server inactive" },
+ { ASP_STATE_CHANGE_STATUS_TYPE * 256 * 256 + AS_ACTIVE_STATUS_IDENT, "Application server active" },
+ { ASP_STATE_CHANGE_STATUS_TYPE * 256 * 256 + AS_PENDING_STATUS_IDENT, "Application server pending" },
+ { OTHER_STATUS_TYPE * 256 * 256 + INSUFFICIENT_ASP_RESOURCES_STATUS_IDENT, "Insufficient ASP resources active in AS" },
+ { OTHER_STATUS_TYPE * 256 * 256 + ALTERNATE_ASP_ACTIVE_STATUS_IDENT, "Alternate ASP active" },
+ { 0, NULL } };
+
+#define STATUS_TYPE_LENGTH 2
+#define STATUS_IDENT_LENGTH 2
+#define STATUS_TYPE_OFFSET PARAMETER_VALUE_OFFSET
+#define STATUS_IDENT_OFFSET (STATUS_TYPE_OFFSET + STATUS_TYPE_LENGTH)
+
+#define PROTOCOL_DATA_OFFSET PARAMETER_VALUE_OFFSET
+
+#define RELEASE_MGMT_REASON 0
+#define RELEASE_PHYS_REASON 1
+#define RELEASE_DM_REASON 2
+#define RELEASE_OTHER_REASON 4
+
+static const value_string iua_release_reason_values[] = {
+ { RELEASE_MGMT_REASON, "Management layer generated release" },
+ { RELEASE_PHYS_REASON, "Physical layer alarm generated release" },
+ { RELEASE_DM_REASON, "Layer 2 should release" },
+ { RELEASE_OTHER_REASON, "Other reason" },
+ { 0, NULL } };
+
+#define RELEASE_REASON_OFFSET PARAMETER_VALUE_OFFSET
+#define RELEASE_REASON_LENGTH 4
+
+#define TEI_STATUS_ASSIGNED 0
+#define TEI_STATUS_UNASSIGNED 1
+
+static const value_string iua_tei_status_values[] = {
+ { TEI_STATUS_ASSIGNED, "TEI is considered assigned by Q.921" },
+ { TEI_STATUS_UNASSIGNED, "TEI is considered unassigned by Q.921" },
+ { 0, NULL } };
+
+#define TEI_STATUS_LENGTH 4
+#define TEI_STATUS_OFFSET PARAMETER_VALUE_OFFSET
+
+/* Initialize the protocol and registered fields */
+static int proto_iua = -1;
+static int hf_iua_version = -1;
+static int hf_iua_reserved = -1;
+static int hf_iua_message_class = -1;
+static int hf_iua_message_type = -1;
+static int hf_iua_message_length = -1;
+static int hf_iua_parameter_tag = -1;
+static int hf_iua_parameter_length = -1;
+static int hf_iua_int_interface_identifier = -1;
+static int hf_iua_text_interface_identifier = -1;
+static int hf_iua_info_string = -1;
+static int hf_iua_interface_range_start = -1;
+static int hf_iua_interface_range_end = -1;
+static int hf_iua_zero_bit = -1;
+static int hf_iua_spare_bit = -1;
+static int hf_iua_sapi = -1;
+static int hf_iua_one_bit = -1;
+static int hf_iua_tei = -1;
+static int hf_iua_status_type = -1;
+static int hf_iua_status_ident = -1;
+static int hf_iua_release_reason = -1;
+static int hf_iua_traffic_mode_type = -1;
+static int hf_iua_error_code = -1;
+static int hf_iua_asp_reason = -1;
+static int hf_iua_tei_status = -1;
+
+/* Initialize the subtree pointers */
+static gint ett_iua = -1;
+static gint ett_iua_parameter = -1;
+static gint ett_iua_dlci = -1;
+static gint ett_iua_range = -1;
+
+static guint
+nr_of_padding_bytes (guint length)
+{
+ guint remainder;
+
+ remainder = length % 4;
+
+ if (remainder == 0)
+ return 0;
+ else
+ return 4 - remainder;
+}
+
+static void
+dissect_iua_common_header(tvbuff_t *common_header_tvb, packet_info *pinfo, proto_tree *iua_tree)
+{
+ guint8 version, reserved, message_class, message_type;
+ guint32 message_length;
+
+ /* Extract the common header */
+ version = tvb_get_guint8(common_header_tvb, VERSION_OFFSET);
+ reserved = tvb_get_guint8(common_header_tvb, RESERVED_OFFSET);
+ message_class = tvb_get_guint8(common_header_tvb, MESSAGE_CLASS_OFFSET);
+ message_type = tvb_get_guint8(common_header_tvb, MESSAGE_TYPE_OFFSET);
+ message_length = tvb_get_ntohl (common_header_tvb, MESSAGE_LENGTH_OFFSET);
+
+ if (check_col(pinfo->fd, COL_INFO)) {
+ col_append_str(pinfo->fd, COL_INFO, val_to_str(message_class * 256 + message_type, iua_message_class_type_acro_values, "UNKNOWN"));
+ col_append_str(pinfo->fd, COL_INFO, " ");
+ };
+
+ /* add the components of the common header to the protocol tree */
+ proto_tree_add_uint_format(iua_tree, hf_iua_version,
+ common_header_tvb, VERSION_OFFSET, VERSION_LENGTH,
+ version, "Version: %u (%s)",
+ version, val_to_str(version, iua_protocol_version_values, "unknown"));
+ proto_tree_add_uint(iua_tree, hf_iua_reserved,
+ common_header_tvb, RESERVED_OFFSET, RESERVED_LENGTH,
+ reserved);
+ proto_tree_add_uint_format(iua_tree, hf_iua_message_class,
+ common_header_tvb, MESSAGE_CLASS_OFFSET, MESSAGE_CLASS_LENGTH,
+ message_class, "Message class: %u (%s)",
+ message_class, val_to_str(message_class, iua_message_class_values, "reserved"));
+ proto_tree_add_uint_format(iua_tree, hf_iua_message_type,
+ common_header_tvb, MESSAGE_TYPE_OFFSET, MESSAGE_TYPE_LENGTH,
+ message_type, "Message type: %u (%s)",
+ message_type, val_to_str(message_class * 256 + message_type, iua_message_class_type_values, "reserved"));
+ proto_tree_add_uint(iua_tree, hf_iua_message_length,
+ common_header_tvb, MESSAGE_LENGTH_OFFSET, MESSAGE_LENGTH_LENGTH,
+ message_length);
+}
+
+static void
+dissect_iua_int_interface_identifier_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
+{
+ guint32 interface_identifier;
+
+ interface_identifier = tvb_get_ntohl(parameter_tvb, INT_INTERFACE_IDENTIFIER_OFFSET);
+
+ proto_tree_add_uint(parameter_tree, hf_iua_int_interface_identifier,
+ parameter_tvb, INT_INTERFACE_IDENTIFIER_OFFSET, INT_INTERFACE_IDENTIFIER_LENGTH,
+ interface_identifier);
+
+ proto_item_set_text(parameter_item, "Integer interface identifier (%u)", interface_identifier);
+}
+
+static void
+dissect_iua_text_interface_identifier_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
+{
+ guint16 length, interface_identifier_length;
+ char *interface_identifier;
+
+ length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET);
+
+ interface_identifier_length = length - PARAMETER_HEADER_LENGTH;
+ interface_identifier = (char *)tvb_get_ptr(parameter_tvb, TEXT_INTERFACE_IDENTIFIER_OFFSET, interface_identifier_length);
+
+ proto_tree_add_string(parameter_tree, hf_iua_text_interface_identifier,
+ parameter_tvb, TEXT_INTERFACE_IDENTIFIER_OFFSET, interface_identifier_length ,
+ interface_identifier);
+
+ proto_item_set_text(parameter_item, "Text interface identifier (%s)", interface_identifier);
+}
+
+static void
+dissect_iua_info_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
+{
+ guint16 length, info_string_length;
+ char *info_string;
+
+ length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET);
+
+ info_string_length = length - PARAMETER_HEADER_LENGTH;
+ info_string = (char *)tvb_get_ptr(parameter_tvb, INFO_STRING_OFFSET, info_string_length);
+
+ proto_tree_add_string(parameter_tree, hf_iua_info_string,
+ parameter_tvb, INFO_STRING_OFFSET, info_string_length ,
+ info_string);
+
+ proto_item_set_text(parameter_item, "Info String (%s)", info_string);
+}
+
+static void
+dissect_iua_dlci_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
+{
+ guint16 dlci;
+ proto_item *dlci_item;
+ proto_tree *dlci_tree;
+
+ dlci = tvb_get_ntohs(parameter_tvb, DLCI_OFFSET);
+ dlci_item = proto_tree_add_text(parameter_tree, parameter_tvb, DLCI_OFFSET, DLCI_LENGTH, "DLCI");
+ dlci_tree = proto_item_add_subtree(dlci_item, ett_iua_dlci);
+
+ proto_tree_add_boolean(dlci_tree, hf_iua_zero_bit, parameter_tvb, DLCI_OFFSET, 1, dlci);
+ proto_tree_add_boolean(dlci_tree, hf_iua_spare_bit, parameter_tvb, DLCI_OFFSET, 1, dlci);
+ proto_tree_add_uint(dlci_tree, hf_iua_sapi, parameter_tvb, DLCI_OFFSET, 1, dlci);
+ proto_tree_add_boolean(dlci_tree, hf_iua_one_bit, parameter_tvb, DLCI_OFFSET+1, 1, dlci);
+ proto_tree_add_uint(dlci_tree, hf_iua_tei, parameter_tvb, DLCI_OFFSET+1, 1, dlci);
+
+ proto_item_set_text(parameter_item, "DLCI");
+}
+
+static void
+dissect_iua_diagnostic_information_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
+{
+ guint16 length, diagnostic_info_length;
+
+ length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET);
+
+ diagnostic_info_length = length - PARAMETER_HEADER_LENGTH;
+
+ proto_tree_add_text(parameter_tree, parameter_tvb, PARAMETER_VALUE_OFFSET, diagnostic_info_length,
+ "Diagnostic information (%u byte%s)",
+ diagnostic_info_length, plurality(diagnostic_info_length, "", "s"));
+
+ proto_item_set_text(parameter_item, "Diagnostic information (%u byte%s)",
+ diagnostic_info_length, plurality(diagnostic_info_length, "", "s"));
+}
+
+static void
+dissect_iua_integer_range_interface_identifier_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
+{
+ guint16 length, number_of_ranges, range_number;
+ guint32 start, end;
+ gint offset;
+
+ proto_item *range_item;
+ proto_tree *range_tree;
+
+ length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET);
+
+ number_of_ranges = (length - PARAMETER_HEADER_LENGTH) / (2 * 4);
+
+ offset = PARAMETER_VALUE_OFFSET;
+ for(range_number = 1; range_number <= number_of_ranges; range_number++) {
+ start = tvb_get_ntohl(parameter_tvb, offset + START_OFFSET);
+ end = tvb_get_ntohl(parameter_tvb, offset + END_OFFSET);
+ range_item = proto_tree_add_text(parameter_tree, parameter_tvb,
+ offset + START_OFFSET, START_LENGTH + END_LENGTH,
+ "Integer interface range: %u - %u",
+ start, end);
+ range_tree = proto_item_add_subtree(range_item, ett_iua_range);
+ proto_tree_add_uint(range_tree, hf_iua_interface_range_start,
+ parameter_tvb,
+ offset + START_OFFSET, START_LENGTH,
+ start);
+ proto_tree_add_uint(range_tree, hf_iua_interface_range_end,
+ parameter_tvb,
+ offset + END_OFFSET, END_LENGTH,
+ end);
+ offset += START_LENGTH + END_LENGTH;
+ };
+
+ proto_item_set_text(parameter_item, "Integer interface identifier (%u range%s)",
+ number_of_ranges, plurality(number_of_ranges, "", "s"));
+}
+
+static void
+dissect_iua_heartbeat_data_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
+{
+ guint16 length, heartbeat_data_length;
+
+ length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET);
+
+ heartbeat_data_length = length - PARAMETER_HEADER_LENGTH;
+
+ proto_tree_add_text(parameter_tree, parameter_tvb, PARAMETER_VALUE_OFFSET, heartbeat_data_length,
+ "Heartbeat data (%u byte%s)",
+ heartbeat_data_length, plurality(heartbeat_data_length, "", "s"));
+
+ proto_item_set_text(parameter_item, "Heartbeat data (%u byte%s)",
+ heartbeat_data_length, plurality(heartbeat_data_length, "", "s"));
+}
+
+static void
+dissect_iua_asp_reason_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
+{
+ guint32 reason;
+
+ reason = tvb_get_ntohl(parameter_tvb, ASP_REASON_OFFSET);
+
+ proto_tree_add_uint_format(parameter_tree, hf_iua_asp_reason,
+ parameter_tvb, ASP_REASON_OFFSET, ASP_REASON_LENGTH,
+ reason, "Reason: %u (%s)",
+ reason, val_to_str(reason, iua_asp_reason_values, "unknown"));
+
+ proto_item_set_text(parameter_item, "Reason (%s)", val_to_str(reason, iua_asp_reason_values, "unknown"));
+}
+
+static void
+dissect_iua_traffic_mode_type_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
+{
+ guint32 traffic_mode_type;
+
+ traffic_mode_type = tvb_get_ntohl(parameter_tvb, TRAFFIC_MODE_TYPE_OFFSET);
+
+ proto_tree_add_uint_format(parameter_tree, hf_iua_traffic_mode_type,
+ parameter_tvb, TRAFFIC_MODE_TYPE_OFFSET, TRAFFIC_MODE_TYPE_LENGTH,
+ traffic_mode_type, "Traffic mode type: %u (%s)",
+ traffic_mode_type, val_to_str(traffic_mode_type, iua_traffic_mode_type_values, "unknown"));
+
+ proto_item_set_text(parameter_item, "Traffic mode type (%s)",
+ val_to_str(traffic_mode_type, iua_traffic_mode_type_values, "unknown"));
+}
+
+static void
+dissect_iua_error_code_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
+{
+ guint32 error_code;
+
+ error_code = tvb_get_ntohl(parameter_tvb, ERROR_CODE_OFFSET);
+ proto_tree_add_uint_format(parameter_tree, hf_iua_error_code,
+ parameter_tvb, ERROR_CODE_OFFSET, ERROR_CODE_LENGTH,
+ error_code, "Error code: %u (%s)",
+ error_code, val_to_str(error_code, iua_error_code_values, "unknown"));
+ proto_item_set_text(parameter_item, "Error code (%s)",
+ val_to_str(error_code, iua_error_code_values, "unknown"));
+}
+
+static void
+dissect_iua_status_type_identification_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
+{
+ guint16 status_type, status_ident;
+
+ status_type = tvb_get_ntohs(parameter_tvb, STATUS_TYPE_OFFSET);
+ status_ident = tvb_get_ntohs(parameter_tvb, STATUS_IDENT_OFFSET);
+
+ proto_tree_add_uint_format(parameter_tree, hf_iua_status_type,
+ parameter_tvb, STATUS_TYPE_OFFSET, STATUS_TYPE_LENGTH,
+ status_type, "Status type: %u (%s)",
+ status_type, val_to_str(status_type, iua_status_type_values, "unknown"));
+ proto_tree_add_uint_format(parameter_tree, hf_iua_status_ident,
+ parameter_tvb, STATUS_IDENT_OFFSET, STATUS_IDENT_LENGTH,
+ status_ident, "Status identification: %u (%s)",
+ status_ident, val_to_str(status_type * 256 * 256 +
+ status_ident, iua_status_type_ident_values, "unknown"));
+
+ proto_item_set_text(parameter_item, "Status type / status identification (%s)",
+ val_to_str(status_type * 256 * 256 +
+ status_ident, iua_status_type_ident_values, "unknown status information"));
+}
+
+static void
+dissect_iua_protocol_data_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
+{
+ guint16 length, protocol_data_length;
+
+ length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET);
+
+ protocol_data_length = length - PARAMETER_HEADER_LENGTH;
+
+ proto_tree_add_text(parameter_tree, parameter_tvb, PROTOCOL_DATA_OFFSET, protocol_data_length,
+ "Protocol data (%u byte%s)",
+ protocol_data_length, plurality(protocol_data_length, "", "s"));
+
+ proto_item_set_text(parameter_item, "Protocol data (%u byte%s)",
+ protocol_data_length, plurality(protocol_data_length, "", "s"));
+}
+
+static void
+dissect_iua_release_reason_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
+{
+ guint32 reason;
+
+ reason = tvb_get_ntohl(parameter_tvb, RELEASE_REASON_OFFSET);
+
+ proto_tree_add_uint_format(parameter_tree, hf_iua_release_reason,
+ parameter_tvb, RELEASE_REASON_OFFSET, RELEASE_REASON_LENGTH,
+ reason, "Reason: %u (%s)",
+ reason, val_to_str(reason, iua_release_reason_values, "unknown"));
+
+ proto_item_set_text(parameter_item, "Reason (%s)", val_to_str(reason, iua_release_reason_values, "unknown"));
+}
+
+static void
+dissect_iua_tei_status_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
+{
+ guint32 status;
+
+ status = tvb_get_ntohl(parameter_tvb, TEI_STATUS_OFFSET);
+
+ proto_tree_add_uint_format(parameter_tree, hf_iua_release_reason,
+ parameter_tvb, TEI_STATUS_OFFSET, TEI_STATUS_LENGTH,
+ status, "TEI status: %u (%s)",
+ status, val_to_str(status, iua_tei_status_values, "unknown"));
+
+ proto_item_set_text(parameter_item, "TEI status (%s)", val_to_str(status, iua_tei_status_values, "unknown"));
+}
+
+static void
+dissect_iua_unknown_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
+{
+ guint16 tag, length, parameter_value_length;
+
+ tag = tvb_get_ntohs(parameter_tvb, PARAMETER_TAG_OFFSET);
+ length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET);
+
+ parameter_value_length = length - PARAMETER_HEADER_LENGTH;
+
+ proto_tree_add_text(parameter_tree, parameter_tvb, PARAMETER_VALUE_OFFSET, parameter_value_length,
+ "Parameter value (%u byte%s)",
+ parameter_value_length, plurality(parameter_value_length, "", "s"));
+
+ proto_item_set_text(parameter_item, "Parameter with tag %u and %u byte%s value",
+ tag, parameter_value_length, plurality(parameter_value_length, "", "s"));
+}
+
+static void
+dissect_iua_parameter(tvbuff_t *parameter_tvb, proto_tree *iua_tree)
+{
+ guint16 tag, length, padding_length, total_length;
+ proto_item *parameter_item;
+ proto_tree *parameter_tree;
+
+ /* extract tag and length from the parameter */
+ tag = tvb_get_ntohs(parameter_tvb, PARAMETER_TAG_OFFSET);
+ length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET);
+
+ /* calculate padding and total length */
+ padding_length = nr_of_padding_bytes(length);
+ total_length = length + padding_length;
+
+ /* create proto_tree stuff */
+ parameter_item = proto_tree_add_text(iua_tree, parameter_tvb,
+ PARAMETER_HEADER_OFFSET, total_length, "Incomplete parameter");
+ parameter_tree = proto_item_add_subtree(parameter_item, ett_iua_parameter);
+
+ /* add tag and length to the m3ua tree */
+ proto_tree_add_uint_format(parameter_tree, hf_iua_parameter_tag,
+ parameter_tvb, PARAMETER_TAG_OFFSET, PARAMETER_TAG_LENGTH,
+ tag, "Identifier: %u (%s)",
+ tag, val_to_str(tag, iua_parameter_tag_values, "unknown"));
+ proto_tree_add_uint(parameter_tree, hf_iua_parameter_length,
+ parameter_tvb, PARAMETER_LENGTH_OFFSET, PARAMETER_LENGTH_LENGTH,
+ length);
+
+ switch(tag) {
+ case INT_INTERFACE_IDENTIFIER_PARAMETER_TAG:
+ dissect_iua_int_interface_identifier_parameter(parameter_tvb, parameter_tree, parameter_item);
+ break;
+ case TEXT_INTERFACE_IDENTIFIER_PARAMETER_TAG:
+ dissect_iua_text_interface_identifier_parameter(parameter_tvb, parameter_tree, parameter_item);
+ break;
+ case INFO_PARAMETER_TAG:
+ dissect_iua_info_parameter(parameter_tvb, parameter_tree, parameter_item);
+ break;
+ case DLCI_PARAMETER_TAG:
+ dissect_iua_dlci_parameter(parameter_tvb, parameter_tree, parameter_item);
+ break;
+ case DIAGNOSTIC_INFORMATION_PARAMETER_TAG:
+ dissect_iua_diagnostic_information_parameter(parameter_tvb, parameter_tree, parameter_item);
+ break;
+ case INTEGER_RANGE_INTERFACE_IDENTIFIER_PARAMETER_TAG:
+ dissect_iua_integer_range_interface_identifier_parameter(parameter_tvb, parameter_tree, parameter_item);
+ break;
+ case HEARTBEAT_DATA_PARAMETER_TAG:
+ dissect_iua_heartbeat_data_parameter(parameter_tvb, parameter_tree, parameter_item);
+ break;
+ case ASP_REASON_PARAMETER_TAG:
+ dissect_iua_asp_reason_parameter(parameter_tvb, parameter_tree, parameter_item);
+ break;
+ case TRAFFIC_MODE_TYPE_PARAMETER_TAG:
+ dissect_iua_traffic_mode_type_parameter(parameter_tvb, parameter_tree, parameter_item);
+ break;
+ case ERROR_CODE_PARAMETER_TAG:
+ dissect_iua_error_code_parameter(parameter_tvb, parameter_tree, parameter_item);
+ break;
+ case STATUS_TYPE_INDENTIFICATION_PARAMETER_TAG:
+ dissect_iua_status_type_identification_parameter(parameter_tvb, parameter_tree, parameter_item);
+ break;
+ case PROTOCOL_DATA_PARAMETER_TAG:
+ dissect_iua_protocol_data_parameter(parameter_tvb, parameter_tree, parameter_item);
+ break;
+ case RELEASE_REASON_PARAMETER_TAG:
+ dissect_iua_release_reason_parameter(parameter_tvb, parameter_tree, parameter_item);
+ break;
+ case TEI_STATUS_PARAMETER_TAG:
+ dissect_iua_tei_status_parameter(parameter_tvb, parameter_tree, parameter_item);
+ break;
+ default:
+ dissect_iua_unknown_parameter(parameter_tvb, parameter_tree, parameter_item);
+ break;
+ };
+
+ if (padding_length > 0)
+ proto_tree_add_text(parameter_tree, parameter_tvb, PARAMETER_HEADER_OFFSET + length, padding_length,
+ "Padding: %u byte%s",
+ padding_length, plurality(padding_length, "", "s"));
+}
+
+static void
+dissect_iua_message(tvbuff_t *message_tvb, packet_info *pinfo, proto_tree *iua_tree)
+{
+ gint offset, length, padding_length, total_length;
+ tvbuff_t *common_header_tvb, *parameter_tvb;
+
+ offset = 0;
+
+ /* extract and process the common header */
+ common_header_tvb = tvb_new_subset(message_tvb, offset, COMMON_HEADER_LENGTH, COMMON_HEADER_LENGTH);
+ dissect_iua_common_header(common_header_tvb, pinfo, iua_tree);
+ offset += COMMON_HEADER_LENGTH;
+
+ /* extract zero or more parameters and process them individually */
+ while(tvb_length_remaining(message_tvb, offset)) {
+ length = tvb_get_ntohs(message_tvb, offset + PARAMETER_LENGTH_OFFSET);
+ padding_length = nr_of_padding_bytes(length);
+ total_length = length + padding_length;
+ /* create a tvb for the parameter including the padding bytes */
+ parameter_tvb = tvb_new_subset(message_tvb, offset, total_length, total_length);
+ dissect_iua_parameter(parameter_tvb, iua_tree);
+ /* get rid of the handled parameter */
+ offset += total_length;
+ }
+}
+
+static void
+dissect_iua(tvbuff_t *message_tvb, packet_info *pinfo, proto_tree *tree)
+{
+ proto_item *ti;
+ proto_tree *iua_tree;
+
+ pinfo->current_proto = "IUA";
+
+ CHECK_DISPLAY_AS_DATA(proto_iua, message_tvb, pinfo, tree);
+
+ /* make entry in the Protocol column on summary display */
+ if (check_col(pinfo->fd, COL_PROTOCOL))
+ col_add_str(pinfo->fd, COL_PROTOCOL, "IUA");
+
+ /* In the interest of speed, if "tree" is NULL, don't do any work not
+ necessary to generate protocol tree items. */
+ if (tree) {
+ /* create the m3ua protocol tree */
+ ti = proto_tree_add_protocol_format(tree, proto_iua, message_tvb, 0, tvb_length(message_tvb),
+ "ISDN Q.921-User Adaptation Layer");
+ iua_tree = proto_item_add_subtree(ti, ett_iua);
+ /* dissect the message */
+ dissect_iua_message(message_tvb, pinfo, iua_tree);
+ };
+}
+
+/* Register the protocol with Ethereal */
+void
+proto_register_iua(void)
+{
+
+ /* Setup list of header fields */
+ static hf_register_info hf[] = {
+ { &hf_iua_version,
+ { "Version", "iua.version",
+ FT_UINT8, BASE_DEC, NULL, 0x0,
+ ""}
+ },
+ { &hf_iua_reserved,
+ { "Reserved", "iua.reserved",
+ FT_UINT8, BASE_HEX, NULL, 0x0,
+ ""}
+ },
+ { &hf_iua_message_class,
+ { "Message class", "iua.message_class",
+ FT_UINT8, BASE_DEC, NULL, 0x0,
+ ""}
+ },
+ { &hf_iua_message_type,
+ { "Message Type", "iua.message_type",
+ FT_UINT8, BASE_DEC, NULL, 0x0,
+ ""}
+ },
+ { &hf_iua_message_length,
+ { "Message length", "iua.message_length",
+ FT_UINT32, BASE_DEC, NULL, 0x0,
+ ""}
+ },
+ { &hf_iua_parameter_tag,
+ { "Parameter Tag", "iua.parameter_tag",
+ FT_UINT16, BASE_DEC, NULL, 0x0,
+ ""}
+ },
+ { &hf_iua_parameter_length,
+ { "Parameter length", "iua.parameter_length",
+ FT_UINT16, BASE_DEC, NULL, 0x0,
+ ""}
+ },
+ { &hf_iua_int_interface_identifier,
+ { "Integer interface identifier", "iua.int_interface_identifier",
+ FT_UINT32, BASE_HEX, NULL, 0x0,
+ ""}
+ },
+ { &hf_iua_text_interface_identifier,
+ { "Text interface identifier", "iua.text_interface_identifier",
+ FT_STRING, BASE_DEC, NULL, 0x0,
+ ""}
+ },
+ { &hf_iua_spare_bit,
+ { "Spare bit", "hf.iua.spare_bit",
+ FT_BOOLEAN, 8, NULL, SPARE_BIT_MASK,
+ ""}
+ },
+ { &hf_iua_sapi,
+ { "SAPI", "hf.iua.sapi",
+ FT_UINT8, BASE_HEX, NULL, SAPI_MASK,
+ ""}
+ },
+ { &hf_iua_zero_bit,
+ { "Zero bit", "hf.iua.zero_bit",
+ FT_BOOLEAN, 8, NULL, ZERO_BIT_MASK,
+ ""}
+ },
+ { &hf_iua_one_bit,
+ { "One bit", "hf.iua.one_bit",
+ FT_BOOLEAN, 8, NULL, ONE_BIT_MASK,
+ ""}
+ },
+ { &hf_iua_tei,
+ { "TEI", "hf.iua.tei",
+ FT_UINT8, BASE_HEX, NULL, TEI_MASK,
+ ""}
+ },
+ { &hf_iua_info_string,
+ { "Info string", "iua.info_string",
+ FT_STRING, BASE_DEC, NULL, 0x0,
+ ""}
+ },
+ { &hf_iua_interface_range_start,
+ { "Start", "iua.interface_range_start",
+ FT_UINT32, BASE_DEC, NULL, 0x0,
+ ""}
+ },
+ { &hf_iua_interface_range_end,
+ { "End", "iua.interface_range_end",
+ FT_UINT32, BASE_DEC, NULL, 0x0,
+ ""}
+ },
+ { &hf_iua_release_reason,
+ { "Reason", "iua.release_reason",
+ FT_UINT32, BASE_HEX, NULL, 0x0,
+ ""}
+ },
+ { &hf_iua_status_type,
+ { "Status type", "iua.status_type",
+ FT_UINT16, BASE_DEC, NULL, 0x0,
+ ""}
+ },
+ { &hf_iua_status_ident,
+ { "Status identification", "iua.status_identification",
+ FT_UINT16, BASE_DEC, NULL, 0x0,
+ ""}
+ },
+ { &hf_iua_traffic_mode_type,
+ { "Traffic mode type", "iua.traffic_mode_type",
+ FT_UINT32, BASE_HEX, NULL, 0x0,
+ ""}
+ },
+ { &hf_iua_error_code,
+ { "Error code", "iua.error_code",
+ FT_UINT32, BASE_DEC, NULL, 0x0,
+ ""}
+ },
+ { &hf_iua_asp_reason,
+ { "Reason", "iua.asp_reason",
+ FT_UINT32, BASE_HEX, NULL, 0x0,
+ ""}
+ },
+ { &hf_iua_tei_status,
+ { "TEI status", "iua.tei_status",
+ FT_UINT32, BASE_HEX, NULL, 0x0,
+ ""}
+ },
+ };
+ /* Setup protocol subtree array */
+ static gint *ett[] = {
+ &ett_iua,
+ &ett_iua_parameter,
+ &ett_iua_dlci,
+ &ett_iua_range,
+ };
+
+ /* Register the protocol name and description */
+ proto_iua = proto_register_protocol("ISDN Q.921-User Adaptation Layer",
+ "IUA", "iua");
+
+ /* Required function calls to register the header fields and subtrees used */
+ proto_register_field_array(proto_iua, hf, array_length(hf));
+ proto_register_subtree_array(ett, array_length(ett));
+};
+
+void
+proto_reg_handoff_iua(void)
+{
+ dissector_add("sctp.port", SCTP_PORT_IUA, dissect_iua, proto_iua);
+}
+
+
* Routines for Stream Control Transmission Protocol dissection
* Copyright 2000, Michael Tüxen <Michael.Tuexen@icn.siemens.de>
*
- * $Id: packet-sctp.c,v 1.9 2001/01/09 06:31:41 guy Exp $
+ * $Id: packet-sctp.c,v 1.10 2001/01/11 16:46:21 gram Exp $
*
* Ethereal - Network traffic analyzer
* By Gerald Combs <gerald@unicom.net>
static const value_string sctp_chunk_type_values[] = {
{ SCTP_DATA_CHUNK_ID, "DATA" },
{ SCTP_INIT_CHUNK_ID, "INIT" },
- { SCTP_INIT_ACK_CHUNK_ID, "INIT ACK" },
+ { SCTP_INIT_ACK_CHUNK_ID, "INIT_ACK" },
{ SCTP_SACK_CHUNK_ID, "SACK" },
{ SCTP_HEARTBEAT_CHUNK_ID, "HEARTBEAT" },
- { SCTP_HEARTBEAT_ACK_CHUNK_ID, "HEARTBEAT ACK" },
+ { SCTP_HEARTBEAT_ACK_CHUNK_ID, "HEARTBEAT_ACK" },
{ SCTP_ABORT_CHUNK_ID, "ABORT" },
{ SCTP_SHUTDOWN_CHUNK_ID, "SHUTDOWN" },
- { SCTP_SHUTDOWN_ACK_CHUNK_ID, "SHUTDOWN ACK" },
+ { SCTP_SHUTDOWN_ACK_CHUNK_ID, "SHUTDOWN_ACK" },
{ SCTP_ERROR_CHUNK_ID, "ERROR" },
- { SCTP_COOKIE_ECHO_CHUNK_ID, "COOKIE ECHO" },
- { SCTP_COOKIE_ACK_CHUNK_ID, "COOKIE ACK" },
+ { SCTP_COOKIE_ECHO_CHUNK_ID, "COOKIE_ECHO" },
+ { SCTP_COOKIE_ACK_CHUNK_ID, "COOKIE_ACK" },
{ SCTP_ECNE_CHUNK_ID, "ECNE" },
{ SCTP_CWR_CHUNK_ID, "CWR" },
- { SCTP_SHUTDOWN_COMPLETE_CHUNK_ID, "SHUTDOWN COMPLETE" },
- { SCTP_IETF_EXT, "IETF EXTENSION" },
+ { SCTP_SHUTDOWN_COMPLETE_CHUNK_ID, "SHUTDOWN_COMPLETE" },
+ { SCTP_IETF_EXT, "IETF_EXTENSION" },
{ 0, NULL } };
#define HEARTBEAT_INFO_PARAMETER_ID 0x0001
{ COOKIE_RECEIVED_WHILE_SHUTTING_DOWN, "Cookie received while shutting down" },
{ 0, NULL } };
+#define NOT_SPECIFIED_PROTOCOL_ID 0
+#define IUA_PAYLOAD_PROTOCOL_ID 1
+#define M2UA_PAYLOAD_PROTOCOL_ID 2
+#define M3UA_PAYLOAD_PROTOCOL_ID 3
+#define SUA_PAYLOAD_PROTOCOL_ID 4
+#define M2PA_PAYLOAD_PROTOCOL_ID 5
+#define V5UA_PAYLOAD_PROTOCOL_ID 6
+
+static const value_string sctp_payload_proto_id_values[] = {
+ { NOT_SPECIFIED_PROTOCOL_ID, "not specified" },
+ { IUA_PAYLOAD_PROTOCOL_ID, "IUA" },
+ { M2UA_PAYLOAD_PROTOCOL_ID, "M2UA" },
+ { M3UA_PAYLOAD_PROTOCOL_ID, "M3UA" },
+ { SUA_PAYLOAD_PROTOCOL_ID, "SUA" },
+ { M2PA_PAYLOAD_PROTOCOL_ID, "M2PA" },
+ { V5UA_PAYLOAD_PROTOCOL_ID, "V5UA" },
+ { 0, NULL } };
+
/* The structure of the common header is described by the following constants */
#define SOURCE_PORT_LENGTH 2
#define DESTINATION_PORT_LENGTH 2
#define DO8(buf,i) DO4(buf,i); DO4(buf,i+4);
#define DO16(buf) DO8(buf,0); DO8(buf,8);
-unsigned int sctp_adler_32(const unsigned char* buf,
- unsigned int len)
+static unsigned int
+sctp_adler_32(const unsigned char* buf,
+ unsigned int len)
{
unsigned int s1 = 1L;
unsigned int s2 = 0L;
return (s2 << 16) | s1;
}
-static char *sctp_checksum_state(tvbuff_t *tvb, guint orig_checksum)
+static char
+*sctp_checksum_state(tvbuff_t *tvb, guint orig_checksum)
{
guint length;
return "incorrect";
}
-guint
+static guint
nr_of_padding_bytes (guint length)
{
guint remainder;
* TLV parameter stuff for INIT and INIT-ACK chunks
*/
-void
+static void
dissect_parameter(tvbuff_t *, proto_tree *);
-void
+static void
dissect_sctp_chunk(tvbuff_t *, packet_info *, proto_tree *, proto_tree *);
-void dissect_tlv_parameter_list(tvbuff_t *parameter_list_tvb, proto_tree *tree)
+static void
+dissect_tlv_parameter_list(tvbuff_t *parameter_list_tvb, proto_tree *tree)
{
guint offset, length, padding_length, total_length;
tvbuff_t *parameter_tvb;
}
}
-void
+static void
dissect_heartbeat_info_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
{
guint16 length, heartbeat_info_length;
heartbeat_info_length, plurality(heartbeat_info_length, "", "s"));
}
-void
+static void
dissect_ipv4_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
{
guint32 ipv4_address;
proto_item_set_text(parameter_item, "IPV4 address parameter");
}
-void
+static void
dissect_ipv6_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
{
proto_tree_add_ipv6(parameter_tree, hf_sctp_parameter_ipv6_address,
proto_item_set_text(parameter_item, "IPV6 address parameter");
}
-void
+static void
dissect_state_cookie_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
{
guint16 length, state_cookie_length;
state_cookie_length, plurality(state_cookie_length, "", "s"));
}
-void
+static void
dissect_unrecognized_parameters_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
{
guint16 length, parameter_value_length;
proto_item_set_text(parameter_item, "Unrecognized parameter of type");
}
-void
+static void
dissect_cookie_preservative_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
{
guint32 increment;
increment);
}
-void
+static void
dissect_hostname_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
{
guint16 length, hostname_length;
proto_item_set_text(parameter_item, "Hostname parameter");
}
-void
+static void
dissect_supported_address_types_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
{
guint16 length, address_type, number_of_address_types, address_type_number, list_of_address_types_length ;
number_of_address_types, plurality(number_of_address_types, "", "s"));
}
-void
+static void
dissect_ecn_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
{
proto_item_set_text(parameter_item, "ECN parameter");
}
-void
+static void
dissect_unknown_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
{
guint16 type, length, parameter_value_length;
type, parameter_value_length, plurality(parameter_value_length, "", "s"));
}
-void
+static void
dissect_parameter(tvbuff_t *parameter_tvb, proto_tree *chunk_tree)
{
guint16 type, length, padding_length, total_length;
/*
* Code to handle error causes for ABORT and ERROR chunks
*/
-void
+static void
dissect_invalid_stream_identifier_cause(tvbuff_t *cause_tvb, proto_tree *cause_tree, proto_item *cause_item)
{
guint16 stream_identifier;
stream_identifier);
}
-void
+static void
dissect_missing_mandatory_parameters_cause(tvbuff_t *cause_tvb, proto_tree *cause_tree, proto_item *cause_item)
{
guint32 number_of_missing_parameters, missing_parameter_number;
number_of_missing_parameters, plurality(number_of_missing_parameters, "", "s") );
}
-void
+static void
dissect_stale_cookie_error_cause(tvbuff_t *cause_tvb, proto_tree *cause_tree, proto_item *cause_item)
{
guint32 measure_of_staleness;
measure_of_staleness);
}
-void
+static void
dissect_out_of_resource_cause(tvbuff_t *cause_tvb, proto_tree *cause_tree, proto_item *cause_item)
{
proto_item_set_text(cause_item, "Error cause reporting lack of resources");
}
-void
+static void
dissect_unresolvable_address_cause(tvbuff_t *cause_tvb, proto_tree *cause_tree, proto_item *cause_item)
{
guint16 code, length, parameter_length, parameter_type;
parameter_type, val_to_str(parameter_type, sctp_parameter_identifier_values, "unknown") );
}
-void
+static void
dissect_unrecognized_chunk_type_cause(tvbuff_t *cause_tvb, packet_info *pinfo,
proto_tree *cause_tree, proto_item *cause_item)
{
val_to_str(unrecognized_type, sctp_chunk_type_values, "unknown"));
}
-void
+static void
dissect_invalid_mandatory_parameter_cause(tvbuff_t *cause_tvb, proto_tree *cause_tree, proto_item *cause_item)
{
proto_item_set_text(cause_item, "Error cause reporting an invalid mandatory parameter");
}
-void
+static void
dissect_unrecognized_parameters_cause(tvbuff_t *cause_tvb, proto_tree *cause_tree, proto_item *cause_item)
{
guint16 length, cause_info_length;
proto_item_set_text(cause_item, "Error cause reporting unrecognized parameters");
}
-void
+static void
dissect_no_user_data_cause(tvbuff_t *cause_tvb, proto_tree *cause_tree, proto_item *cause_item)
{
guint32 tsn;
tsn);
}
-void
+static void
dissect_cookie_received_while_shutting_down_cause(tvbuff_t *cause_tvb, proto_tree *cause_tree, proto_item *cause_item)
{
proto_item_set_text(cause_item, "Error cause reporting cookie reception while shutting down");
}
-void
+static void
dissect_unknown_cause(tvbuff_t *cause_tvb, proto_tree *cause_tree, proto_item *cause_item)
{
guint16 code, length, cause_info_length;
code, cause_info_length, plurality(cause_info_length, "", "s"));
}
-void
+static void
dissect_error_cause(tvbuff_t *cause_tvb, packet_info *pinfo, proto_tree *chunk_tree)
{
guint16 code, length, padding_length, total_length;
/* do lookup with the subdissector table */
if (dissector_try_port(sctp_dissector_table, pi.srcport, payload_tvb, pinfo, tree) ||
dissector_try_port(sctp_dissector_table, pi.destport, payload_tvb, pinfo, tree))
+
return;
else {
+ if (check_col(pinfo->fd, COL_INFO))
+ col_append_str(pinfo->fd, COL_INFO, "DATA ");
proto_tree_add_text(chunk_tree, payload_tvb, 0, payload_length,
"Payload (%u byte%s)",
payload_length, plurality(payload_length, "", "s"));
}
}
-
-
-
-
static void
dissect_data_chunk(tvbuff_t *chunk_tvb, packet_info *pinfo, proto_tree *tree,
proto_tree *chunk_tree, proto_item *chunk_item, proto_item *flags_item)
guint32 tsn, payload_proto_id;
proto_tree *flag_tree;
tvbuff_t *payload_tvb;
-
- flags = tvb_get_guint8(chunk_tvb, CHUNK_FLAGS_OFFSET);
- length = tvb_get_ntohs(chunk_tvb, CHUNK_LENGTH_OFFSET);
- flag_tree = proto_item_add_subtree(flags_item, ett_sctp_data_chunk_flags);
- proto_tree_add_boolean(flag_tree, hf_sctp_data_chunk_e_bit, chunk_tvb,
- CHUNK_FLAGS_OFFSET, CHUNK_FLAGS_LENGTH, flags);
- proto_tree_add_boolean(flag_tree, hf_sctp_data_chunk_b_bit, chunk_tvb,
- CHUNK_FLAGS_OFFSET, CHUNK_FLAGS_LENGTH, flags);
- proto_tree_add_boolean(flag_tree, hf_sctp_data_chunk_u_bit, chunk_tvb,
- CHUNK_FLAGS_OFFSET, CHUNK_FLAGS_LENGTH, flags);
-
- tsn = tvb_get_ntohl(chunk_tvb, DATA_CHUNK_TSN_OFFSET);
- stream_id = tvb_get_ntohs(chunk_tvb, DATA_CHUNK_STREAM_ID_OFFSET);
- stream_seq_number = tvb_get_ntohs(chunk_tvb, DATA_CHUNK_STREAM_SEQ_NUMBER_OFFSET);
- payload_proto_id = tvb_get_ntohl(chunk_tvb, DATA_CHUNK_PAYLOAD_PROTOCOL_ID_OFFSET);
-
+ length = tvb_get_ntohs(chunk_tvb, CHUNK_LENGTH_OFFSET);
payload_length = length - DATA_CHUNK_HEADER_LENGTH;
padding_length = nr_of_padding_bytes(length);
total_payload_length = payload_length + padding_length;
payload_tvb = tvb_new_subset(chunk_tvb, DATA_CHUNK_PAYLOAD_OFFSET,
- total_payload_length, total_payload_length);
-
- proto_tree_add_uint(chunk_tree, hf_sctp_data_chunk_tsn,
- chunk_tvb,
- DATA_CHUNK_TSN_OFFSET, DATA_CHUNK_TSN_LENGTH,
- tsn);
- proto_tree_add_uint(chunk_tree, hf_sctp_data_chunk_stream_id,
- chunk_tvb,
- DATA_CHUNK_STREAM_ID_OFFSET, DATA_CHUNK_STREAM_ID_LENGTH,
- stream_id);
- proto_tree_add_uint(chunk_tree, hf_sctp_data_chunk_stream_seq_number,
- chunk_tvb,
- DATA_CHUNK_STREAM_SEQ_NUMBER_OFFSET, DATA_CHUNK_STREAM_SEQ_NUMBER_LENGTH,
- stream_seq_number);
- proto_tree_add_uint(chunk_tree, hf_sctp_data_chunk_payload_proto_id,
- chunk_tvb,
- DATA_CHUNK_PAYLOAD_PROTOCOL_ID_OFFSET, DATA_CHUNK_PAYLOAD_PROTOCOL_ID_LENGTH,
- payload_proto_id);
- proto_item_set_text(chunk_item, "DATA chunk with TSN %u (%u:%u) containing %u byte%s of payload",
- tsn, stream_id, stream_seq_number,
- payload_length, plurality(payload_length, "", "s"));
-
- dissect_payload(payload_tvb, pinfo, tree, chunk_tree, payload_length, padding_length);
-}
+ total_payload_length, total_payload_length);
+
+ if (chunk_tree) {
+ flags = tvb_get_guint8(chunk_tvb, CHUNK_FLAGS_OFFSET);
+
+ flag_tree = proto_item_add_subtree(flags_item, ett_sctp_data_chunk_flags);
+ proto_tree_add_boolean(flag_tree, hf_sctp_data_chunk_e_bit, chunk_tvb,
+ CHUNK_FLAGS_OFFSET, CHUNK_FLAGS_LENGTH, flags);
+ proto_tree_add_boolean(flag_tree, hf_sctp_data_chunk_b_bit, chunk_tvb,
+ CHUNK_FLAGS_OFFSET, CHUNK_FLAGS_LENGTH, flags);
+ proto_tree_add_boolean(flag_tree, hf_sctp_data_chunk_u_bit, chunk_tvb,
+ CHUNK_FLAGS_OFFSET, CHUNK_FLAGS_LENGTH, flags);
+
+ tsn = tvb_get_ntohl(chunk_tvb, DATA_CHUNK_TSN_OFFSET);
+ stream_id = tvb_get_ntohs(chunk_tvb, DATA_CHUNK_STREAM_ID_OFFSET);
+ stream_seq_number = tvb_get_ntohs(chunk_tvb, DATA_CHUNK_STREAM_SEQ_NUMBER_OFFSET);
+ payload_proto_id = tvb_get_ntohl(chunk_tvb, DATA_CHUNK_PAYLOAD_PROTOCOL_ID_OFFSET);
+
+ proto_tree_add_uint(chunk_tree, hf_sctp_data_chunk_tsn,
+ chunk_tvb,
+ DATA_CHUNK_TSN_OFFSET, DATA_CHUNK_TSN_LENGTH,
+ tsn);
+ proto_tree_add_uint(chunk_tree, hf_sctp_data_chunk_stream_id,
+ chunk_tvb,
+ DATA_CHUNK_STREAM_ID_OFFSET, DATA_CHUNK_STREAM_ID_LENGTH,
+ stream_id);
+ proto_tree_add_uint(chunk_tree, hf_sctp_data_chunk_stream_seq_number,
+ chunk_tvb,
+ DATA_CHUNK_STREAM_SEQ_NUMBER_OFFSET, DATA_CHUNK_STREAM_SEQ_NUMBER_LENGTH,
+ stream_seq_number);
+ proto_tree_add_uint_format(chunk_tree, hf_sctp_data_chunk_payload_proto_id,
+ chunk_tvb, DATA_CHUNK_PAYLOAD_PROTOCOL_ID_OFFSET, DATA_CHUNK_PAYLOAD_PROTOCOL_ID_LENGTH,
+ payload_proto_id, "Payload protocol identifier: %u (%s)",
+ payload_proto_id, val_to_str(payload_proto_id, sctp_payload_proto_id_values, "unknown"));
+ proto_item_set_text(chunk_item, "DATA chunk with TSN %u (%u:%u) containing %u byte%s of payload",
+ tsn, stream_id, stream_seq_number,
+ payload_length, plurality(payload_length, "", "s"));
+ };
+ dissect_payload(payload_tvb, pinfo, tree, chunk_tree, payload_length, padding_length);
+}
-void
+static void
dissect_init_chunk(tvbuff_t *chunk_tvb, packet_info *pinfo, proto_tree *tree,
proto_tree *chunk_tree, proto_item *chunk_item, proto_item *flags_item)
{
tvbuff_t *parameter_list_tvb;
type = tvb_get_guint8(chunk_tvb, CHUNK_TYPE_OFFSET);
-
- initiate_tag = tvb_get_ntohl(chunk_tvb, INIT_CHUNK_INITIATE_TAG_OFFSET);
- adv_rec_window_credit = tvb_get_ntohl(chunk_tvb, INIT_CHUNK_ADV_REC_WINDOW_CREDIT_OFFSET);
- number_of_inbound_streams = tvb_get_ntohs(chunk_tvb, INIT_CHUNK_NUMBER_OF_INBOUND_STREAMS_OFFSET);
- number_of_outbound_streams = tvb_get_ntohs(chunk_tvb, INIT_CHUNK_NUMBER_OF_OUTBOUND_STREAMS_OFFSET);
- initial_tsn = tvb_get_ntohl(chunk_tvb, INIT_CHUNK_INITIAL_TSN_OFFSET);
-
- /* handle fixed parameters */
- proto_tree_add_uint(chunk_tree, hf_sctp_init_chunk_initiate_tag,
- chunk_tvb,
- INIT_CHUNK_INITIATE_TAG_OFFSET, INIT_CHUNK_INITIATE_TAG_LENGTH,
- initiate_tag);
- proto_tree_add_uint(chunk_tree, hf_sctp_init_chunk_adv_rec_window_credit,
- chunk_tvb,
- INIT_CHUNK_ADV_REC_WINDOW_CREDIT_OFFSET, INIT_CHUNK_ADV_REC_WINDOW_CREDIT_LENGTH,
- adv_rec_window_credit);
- proto_tree_add_uint(chunk_tree, hf_sctp_init_chunk_number_of_outbound_streams,
- chunk_tvb,
- INIT_CHUNK_NUMBER_OF_OUTBOUND_STREAMS_OFFSET, INIT_CHUNK_NUMBER_OF_OUTBOUND_STREAMS_LENGTH,
- number_of_outbound_streams);
- proto_tree_add_uint(chunk_tree, hf_sctp_init_chunk_number_of_inbound_streams,
- chunk_tvb,
- INIT_CHUNK_NUMBER_OF_INBOUND_STREAMS_OFFSET, INIT_CHUNK_NUMBER_OF_INBOUND_STREAMS_LENGTH,
- number_of_inbound_streams);
- proto_tree_add_uint(chunk_tree, hf_sctp_init_chunk_initial_tsn,
- chunk_tvb,
- INIT_CHUNK_INITIAL_TSN_OFFSET, INIT_CHUNK_INITIAL_TSN_LENGTH,
- initial_tsn);
- /* handle variable paramters */
- parameter_list_tvb = tvb_new_subset(chunk_tvb, INIT_CHUNK_VARIABLE_LENGTH_PARAMETER_OFFSET, -1, -1);
- dissect_tlv_parameter_list(parameter_list_tvb, chunk_tree);
-
- proto_item_set_text(chunk_item,
- "%s chunk requesting for %u outbound stream%s and accepting up to %u inbound stream%s",
- val_to_str(type, sctp_chunk_type_values, "unknown"),
- number_of_outbound_streams, plurality(number_of_outbound_streams, "", "s"),
- number_of_inbound_streams, plurality(number_of_inbound_streams, "", "s"));
+ if (check_col(pinfo->fd, COL_INFO)) {
+ if (type == SCTP_INIT_CHUNK_ID) {
+ col_append_str(pinfo->fd, COL_INFO, "INIT ");
+ } else {
+ col_append_str(pinfo->fd, COL_INFO, "INIT_ACK ");
+ };
+ };
+
+ if (chunk_tree) {
+ initiate_tag = tvb_get_ntohl(chunk_tvb, INIT_CHUNK_INITIATE_TAG_OFFSET);
+ adv_rec_window_credit = tvb_get_ntohl(chunk_tvb, INIT_CHUNK_ADV_REC_WINDOW_CREDIT_OFFSET);
+ number_of_inbound_streams = tvb_get_ntohs(chunk_tvb, INIT_CHUNK_NUMBER_OF_INBOUND_STREAMS_OFFSET);
+ number_of_outbound_streams = tvb_get_ntohs(chunk_tvb, INIT_CHUNK_NUMBER_OF_OUTBOUND_STREAMS_OFFSET);
+ initial_tsn = tvb_get_ntohl(chunk_tvb, INIT_CHUNK_INITIAL_TSN_OFFSET);
+
+ /* handle fixed parameters */
+ proto_tree_add_uint(chunk_tree, hf_sctp_init_chunk_initiate_tag,
+ chunk_tvb,
+ INIT_CHUNK_INITIATE_TAG_OFFSET, INIT_CHUNK_INITIATE_TAG_LENGTH,
+ initiate_tag);
+ proto_tree_add_uint(chunk_tree, hf_sctp_init_chunk_adv_rec_window_credit,
+ chunk_tvb,
+ INIT_CHUNK_ADV_REC_WINDOW_CREDIT_OFFSET, INIT_CHUNK_ADV_REC_WINDOW_CREDIT_LENGTH,
+ adv_rec_window_credit);
+ proto_tree_add_uint(chunk_tree, hf_sctp_init_chunk_number_of_outbound_streams,
+ chunk_tvb,
+ INIT_CHUNK_NUMBER_OF_OUTBOUND_STREAMS_OFFSET, INIT_CHUNK_NUMBER_OF_OUTBOUND_STREAMS_LENGTH,
+ number_of_outbound_streams);
+ proto_tree_add_uint(chunk_tree, hf_sctp_init_chunk_number_of_inbound_streams,
+ chunk_tvb,
+ INIT_CHUNK_NUMBER_OF_INBOUND_STREAMS_OFFSET, INIT_CHUNK_NUMBER_OF_INBOUND_STREAMS_LENGTH,
+ number_of_inbound_streams);
+ proto_tree_add_uint(chunk_tree, hf_sctp_init_chunk_initial_tsn,
+ chunk_tvb,
+ INIT_CHUNK_INITIAL_TSN_OFFSET, INIT_CHUNK_INITIAL_TSN_LENGTH,
+ initial_tsn);
+
+ /* handle variable paramters */
+ parameter_list_tvb = tvb_new_subset(chunk_tvb, INIT_CHUNK_VARIABLE_LENGTH_PARAMETER_OFFSET, -1, -1);
+ dissect_tlv_parameter_list(parameter_list_tvb, chunk_tree);
+
+ proto_item_set_text(chunk_item,
+ "%s chunk requesting for %u outbound stream%s and accepting up to %u inbound stream%s",
+ val_to_str(type, sctp_chunk_type_values, "unknown"),
+ number_of_outbound_streams, plurality(number_of_outbound_streams, "", "s"),
+ number_of_inbound_streams, plurality(number_of_inbound_streams, "", "s"));
+ }
}
-void
+static void
dissect_init_ack_chunk(tvbuff_t *chunk_tvb, packet_info *pinfo, proto_tree *tree,
proto_tree *chunk_tree, proto_item *chunk_item, proto_item *flags_item)
{
dissect_init_chunk(chunk_tvb, pinfo, tree, chunk_tree, chunk_item, flags_item);
}
-void
+static void
dissect_sack_chunk(tvbuff_t *chunk_tvb, packet_info *pinfo, proto_tree *tree,
proto_tree *chunk_tree, proto_item *chunk_item, proto_item *flags_item)
{
gint gap_block_offset, dup_tsn_offset;
proto_item *block_item;
proto_tree *block_tree;
-
- cumulative_tsn_ack = tvb_get_ntohl(chunk_tvb, SACK_CHUNK_CUMULATIVE_TSN_ACK_OFFSET);
- adv_rec_window_credit = tvb_get_ntohl(chunk_tvb, SACK_CHUNK_ADV_REC_WINDOW_CREDIT_OFFSET);
- number_of_gap_blocks = tvb_get_ntohs(chunk_tvb, SACK_CHUNK_NUMBER_OF_GAP_BLOCKS_OFFSET);
- number_of_dup_tsns = tvb_get_ntohs(chunk_tvb, SACK_CHUNK_NUMBER_OF_DUP_TSNS_OFFSET);
-
- proto_tree_add_uint(chunk_tree, hf_sctp_sack_chunk_cumulative_tsn_ack,
- chunk_tvb,
- SACK_CHUNK_CUMULATIVE_TSN_ACK_OFFSET, SACK_CHUNK_CUMULATIVE_TSN_ACK_LENGTH,
- cumulative_tsn_ack);
- proto_tree_add_uint(chunk_tree, hf_sctp_sack_chunk_adv_rec_window_credit,
- chunk_tvb,
- SACK_CHUNK_ADV_REC_WINDOW_CREDIT_OFFSET, SACK_CHUNK_ADV_REC_WINDOW_CREDIT_LENGTH,
- adv_rec_window_credit);
- proto_tree_add_uint(chunk_tree, hf_sctp_sack_chunk_number_of_gap_blocks,
- chunk_tvb,
- SACK_CHUNK_NUMBER_OF_GAP_BLOCKS_OFFSET, SACK_CHUNK_NUMBER_OF_GAP_BLOCKS_LENGTH,
- number_of_gap_blocks);
- proto_tree_add_uint(chunk_tree, hf_sctp_sack_chunk_number_of_dup_tsns,
- chunk_tvb,
- SACK_CHUNK_NUMBER_OF_DUP_TSNS_OFFSET, SACK_CHUNK_NUMBER_OF_DUP_TSNS_LENGTH,
- number_of_dup_tsns);
- /* handle the gap acknowledgement blocks */
- gap_block_offset = SACK_CHUNK_GAP_BLOCK_OFFSET;
- for(gap_block_number = 1; gap_block_number <= number_of_gap_blocks; gap_block_number++) {
- start = tvb_get_ntohs(chunk_tvb, gap_block_offset);
- end = tvb_get_ntohs(chunk_tvb, gap_block_offset + SACK_CHUNK_GAP_BLOCK_START_LENGTH);
- block_item = proto_tree_add_text(chunk_tree, chunk_tvb,
- gap_block_offset, SACK_CHUNK_GAP_BLOCK_LENGTH,
- "Gap Acknowledgement for %u TSN%s",
- 1 + end - start, plurality(1 + end - start, "", "s"));
- block_tree = proto_item_add_subtree(block_item, ett_sctp_sack_chunk_gap_block);
- proto_tree_add_uint(block_tree, hf_sctp_sack_chunk_gap_block_start,
+ if (check_col(pinfo->fd, COL_INFO))
+ col_append_str(pinfo->fd, COL_INFO, "SACK ");
+
+ if (chunk_tree) {
+ cumulative_tsn_ack = tvb_get_ntohl(chunk_tvb, SACK_CHUNK_CUMULATIVE_TSN_ACK_OFFSET);
+ adv_rec_window_credit = tvb_get_ntohl(chunk_tvb, SACK_CHUNK_ADV_REC_WINDOW_CREDIT_OFFSET);
+ number_of_gap_blocks = tvb_get_ntohs(chunk_tvb, SACK_CHUNK_NUMBER_OF_GAP_BLOCKS_OFFSET);
+ number_of_dup_tsns = tvb_get_ntohs(chunk_tvb, SACK_CHUNK_NUMBER_OF_DUP_TSNS_OFFSET);
+
+ proto_tree_add_uint(chunk_tree, hf_sctp_sack_chunk_cumulative_tsn_ack,
chunk_tvb,
- gap_block_offset, SACK_CHUNK_GAP_BLOCK_START_LENGTH,
- start);
- proto_tree_add_uint(block_tree, hf_sctp_sack_chunk_gap_block_end,
+ SACK_CHUNK_CUMULATIVE_TSN_ACK_OFFSET, SACK_CHUNK_CUMULATIVE_TSN_ACK_LENGTH,
+ cumulative_tsn_ack);
+ proto_tree_add_uint(chunk_tree, hf_sctp_sack_chunk_adv_rec_window_credit,
chunk_tvb,
- gap_block_offset + SACK_CHUNK_GAP_BLOCK_START_LENGTH,
- SACK_CHUNK_GAP_BLOCK_END_LENGTH,
- end);
- gap_block_offset += SACK_CHUNK_GAP_BLOCK_LENGTH;
- };
-
- /* handle the duplicate TSNs */
- dup_tsn_offset = SACK_CHUNK_GAP_BLOCK_OFFSET + number_of_gap_blocks * SACK_CHUNK_GAP_BLOCK_LENGTH;
- for(dup_tsn_number = 1; dup_tsn_number <= number_of_dup_tsns; dup_tsn_number++) {
- dup_tsn = tvb_get_ntohl(chunk_tvb, dup_tsn_offset);
- proto_tree_add_uint(chunk_tree, hf_sctp_sack_chunk_duplicate_tsn,
+ SACK_CHUNK_ADV_REC_WINDOW_CREDIT_OFFSET, SACK_CHUNK_ADV_REC_WINDOW_CREDIT_LENGTH,
+ adv_rec_window_credit);
+ proto_tree_add_uint(chunk_tree, hf_sctp_sack_chunk_number_of_gap_blocks,
chunk_tvb,
- dup_tsn, SACK_CHUNK_DUP_TSN_LENGTH,
- dup_tsn);
- dup_tsn_offset += SACK_CHUNK_DUP_TSN_LENGTH;
- };
-
- proto_item_set_text(chunk_item,
- "SACK chunk acknowledging TSN %u and reporting %u gap%s and %u duplicate TSN%s",
- cumulative_tsn_ack,
- number_of_gap_blocks, plurality(number_of_gap_blocks, "", "s"),
- number_of_dup_tsns, plurality(number_of_dup_tsns, "", "s"));
-}
+ SACK_CHUNK_NUMBER_OF_GAP_BLOCKS_OFFSET, SACK_CHUNK_NUMBER_OF_GAP_BLOCKS_LENGTH,
+ number_of_gap_blocks);
+ proto_tree_add_uint(chunk_tree, hf_sctp_sack_chunk_number_of_dup_tsns,
+ chunk_tvb,
+ SACK_CHUNK_NUMBER_OF_DUP_TSNS_OFFSET, SACK_CHUNK_NUMBER_OF_DUP_TSNS_LENGTH,
+ number_of_dup_tsns);
+
+ /* handle the gap acknowledgement blocks */
+ gap_block_offset = SACK_CHUNK_GAP_BLOCK_OFFSET;
+ for(gap_block_number = 1; gap_block_number <= number_of_gap_blocks; gap_block_number++) {
+ start = tvb_get_ntohs(chunk_tvb, gap_block_offset);
+ end = tvb_get_ntohs(chunk_tvb, gap_block_offset + SACK_CHUNK_GAP_BLOCK_START_LENGTH);
+ block_item = proto_tree_add_text(chunk_tree, chunk_tvb,
+ gap_block_offset, SACK_CHUNK_GAP_BLOCK_LENGTH,
+ "Gap Acknowledgement for %u TSN%s",
+ 1 + end - start, plurality(1 + end - start, "", "s"));
+ block_tree = proto_item_add_subtree(block_item, ett_sctp_sack_chunk_gap_block);
+ proto_tree_add_uint(block_tree, hf_sctp_sack_chunk_gap_block_start,
+ chunk_tvb,
+ gap_block_offset, SACK_CHUNK_GAP_BLOCK_START_LENGTH,
+ start);
+ proto_tree_add_uint(block_tree, hf_sctp_sack_chunk_gap_block_end,
+ chunk_tvb,
+ gap_block_offset + SACK_CHUNK_GAP_BLOCK_START_LENGTH,
+ SACK_CHUNK_GAP_BLOCK_END_LENGTH,
+ end);
+ gap_block_offset += SACK_CHUNK_GAP_BLOCK_LENGTH;
+ };
+
+ /* handle the duplicate TSNs */
+ dup_tsn_offset = SACK_CHUNK_GAP_BLOCK_OFFSET + number_of_gap_blocks * SACK_CHUNK_GAP_BLOCK_LENGTH;
+ for(dup_tsn_number = 1; dup_tsn_number <= number_of_dup_tsns; dup_tsn_number++) {
+ dup_tsn = tvb_get_ntohl(chunk_tvb, dup_tsn_offset);
+ proto_tree_add_uint(chunk_tree, hf_sctp_sack_chunk_duplicate_tsn,
+ chunk_tvb,
+ dup_tsn, SACK_CHUNK_DUP_TSN_LENGTH,
+ dup_tsn);
+ dup_tsn_offset += SACK_CHUNK_DUP_TSN_LENGTH;
+ }
+
+ proto_item_set_text(chunk_item,
+ "SACK chunk acknowledging TSN %u and reporting %u gap%s and %u duplicate TSN%s",
+ cumulative_tsn_ack,
+ number_of_gap_blocks, plurality(number_of_gap_blocks, "", "s"),
+ number_of_dup_tsns, plurality(number_of_dup_tsns, "", "s"));
+ }
+}
-void
+static void
dissect_heartbeat_chunk(tvbuff_t *chunk_tvb, packet_info *pinfo, proto_tree *tree,
proto_tree *chunk_tree, proto_item *chunk_item, proto_item *flags_item)
{
tvbuff_t *parameter_tvb;
guint chunk_length, info_length, padding_length, total_length;
-
- chunk_length = tvb_get_ntohs(chunk_tvb, CHUNK_LENGTH_OFFSET);
- info_length = chunk_length - CHUNK_HEADER_LENGTH;
- padding_length = nr_of_padding_bytes(info_length);
- total_length = info_length + padding_length;
- parameter_tvb = tvb_new_subset(chunk_tvb, HEARTBEAT_CHUNK_INFO_OFFSET, total_length, total_length);
- dissect_parameter(parameter_tvb, chunk_tree);
-
- proto_item_set_text(chunk_item, "HEARTBEAT chunk");
+ if (check_col(pinfo->fd, COL_INFO))
+ col_append_str(pinfo->fd, COL_INFO, "HEARTBEAT ");
+
+ if (chunk_tree) {
+ chunk_length = tvb_get_ntohs(chunk_tvb, CHUNK_LENGTH_OFFSET);
+ info_length = chunk_length - CHUNK_HEADER_LENGTH;
+ padding_length = nr_of_padding_bytes(info_length);
+ total_length = info_length + padding_length;
+ parameter_tvb = tvb_new_subset(chunk_tvb, HEARTBEAT_CHUNK_INFO_OFFSET, total_length, total_length);
+
+ dissect_parameter(parameter_tvb, chunk_tree);
+
+ proto_item_set_text(chunk_item, "HEARTBEAT chunk");
+ }
}
-void
+static void
dissect_heartbeat_ack_chunk(tvbuff_t *chunk_tvb, packet_info *pinfo, proto_tree *tree,
proto_tree *chunk_tree, proto_item *chunk_item, proto_item *flags_item)
{
tvbuff_t *parameter_tvb;
guint chunk_length, info_length, padding_length, total_length;
+
+ if (check_col(pinfo->fd, COL_INFO))
+ col_append_str(pinfo->fd, COL_INFO, "HEARTBEAT_ACK ");
- chunk_length = tvb_get_ntohs(chunk_tvb, CHUNK_LENGTH_OFFSET);
- info_length = chunk_length - CHUNK_HEADER_LENGTH;
- padding_length = nr_of_padding_bytes(info_length);
- total_length = info_length + padding_length;
+ if (chunk_tree) {
+ chunk_length = tvb_get_ntohs(chunk_tvb, CHUNK_LENGTH_OFFSET);
+ info_length = chunk_length - CHUNK_HEADER_LENGTH;
+ padding_length = nr_of_padding_bytes(info_length);
+ total_length = info_length + padding_length;
- parameter_tvb = tvb_new_subset(chunk_tvb, HEARTBEAT_CHUNK_INFO_OFFSET, total_length, total_length);
+ parameter_tvb = tvb_new_subset(chunk_tvb, HEARTBEAT_CHUNK_INFO_OFFSET, total_length, total_length);
- dissect_parameter(parameter_tvb, chunk_tree);
-
- proto_item_set_text(chunk_item, "HEARTBEAT ACK chunk");
-}
+ dissect_parameter(parameter_tvb, chunk_tree);
+
+ proto_item_set_text(chunk_item, "HEARTBEAT ACK chunk");
+ }
+}
-void
+static void
dissect_abort_chunk(tvbuff_t *chunk_tvb, packet_info *pinfo, proto_tree *tree,
proto_tree *chunk_tree, proto_item *chunk_item, proto_item *flags_item)
{
guint offset, number_of_causes;
guint16 length, padding_length, total_length;
tvbuff_t *cause_tvb;
+
+ if (check_col(pinfo->fd, COL_INFO))
+ col_append_str(pinfo->fd, COL_INFO, "ABORT ");
- number_of_causes = 0;
- offset = ABORT_CHUNK_FIRST_ERROR_CAUSE_OFFSET;
- while(tvb_length_remaining(chunk_tvb, offset)) {
+ if (chunk_tree) {
+ number_of_causes = 0;
+ offset = ABORT_CHUNK_FIRST_ERROR_CAUSE_OFFSET;
+ while(tvb_length_remaining(chunk_tvb, offset)) {
length = tvb_get_ntohs(chunk_tvb, offset + CAUSE_LENGTH_OFFSET);
padding_length = nr_of_padding_bytes(length);
total_length = length + padding_length;
/* get rid of the handled parameter */
offset += total_length;
number_of_causes++;
- };
-
- proto_item_set_text(chunk_item, "Abort chunk with %u cause%s",
- number_of_causes, plurality(number_of_causes, "", "s"));
-}
+ };
+
+ proto_item_set_text(chunk_item, "Abort chunk with %u cause%s",
+ number_of_causes, plurality(number_of_causes, "", "s"));
+ }
+}
-void
+static void
dissect_shutdown_chunk(tvbuff_t *chunk_tvb, packet_info *pinfo, proto_tree *tree,
proto_tree *chunk_tree, proto_item *chunk_item, proto_item *flags_item)
{
guint32 cumulative_tsn_ack;
+
+ if (check_col(pinfo->fd, COL_INFO))
+ col_append_str(pinfo->fd, COL_INFO, "SHUTDOWN ");
- cumulative_tsn_ack = tvb_get_ntohl(chunk_tvb, SHUTDOWN_CHUNK_CUMULATIVE_TSN_ACK_OFFSET);
- proto_tree_add_uint(chunk_tree, hf_sctp_shutdown_chunk_cumulative_tsn_ack,
- chunk_tvb,
- SHUTDOWN_CHUNK_CUMULATIVE_TSN_ACK_OFFSET,
- SHUTDOWN_CHUNK_CUMULATIVE_TSN_ACK_LENGTH,
- cumulative_tsn_ack);
-
- proto_item_set_text(chunk_item, "SHUTDOWN chunk acknowledging up to TSN %u",
- cumulative_tsn_ack);
-}
+ if (chunk_tree) {
+ cumulative_tsn_ack = tvb_get_ntohl(chunk_tvb, SHUTDOWN_CHUNK_CUMULATIVE_TSN_ACK_OFFSET);
+ proto_tree_add_uint(chunk_tree, hf_sctp_shutdown_chunk_cumulative_tsn_ack,
+ chunk_tvb,
+ SHUTDOWN_CHUNK_CUMULATIVE_TSN_ACK_OFFSET,
+ SHUTDOWN_CHUNK_CUMULATIVE_TSN_ACK_LENGTH,
+ cumulative_tsn_ack);
+
+ proto_item_set_text(chunk_item, "SHUTDOWN chunk acknowledging up to TSN %u",
+ cumulative_tsn_ack);
+ }
+}
-void
+static void
dissect_shutdown_ack_chunk(tvbuff_t *chunk_tvb, packet_info *pinfo, proto_tree *tree,
proto_tree *chunk_tree, proto_item *chunk_item, proto_item *flags_item)
{
- proto_item_set_text(chunk_item, "SHUTDOWN ACK chunk");
-}
+ if (check_col(pinfo->fd, COL_INFO))
+ col_append_str(pinfo->fd, COL_INFO, "SHUTDOWN_ACK ");
-void
+ if (chunk_tree) {
+ proto_item_set_text(chunk_item, "SHUTDOWN ACK chunk");
+ }
+}
+
+static void
dissect_error_chunk(tvbuff_t *chunk_tvb, packet_info *pinfo, proto_tree *tree,
proto_tree *chunk_tree, proto_item *chunk_item, proto_item *flags_item)
{
guint16 length, padding_length, total_length;
tvbuff_t *cause_tvb;
- number_of_causes = 0;
- offset = ERROR_CHUNK_FIRST_ERROR_CAUSE_OFFSET;
- do {
- length = tvb_get_ntohs(chunk_tvb, offset + CAUSE_LENGTH_OFFSET);
- padding_length = nr_of_padding_bytes(length);
- total_length = length + padding_length;
- /* create a tvb for the chunk including the padding bytes */
- cause_tvb = tvb_new_subset(chunk_tvb, offset, total_length, total_length);
- dissect_error_cause(cause_tvb, pinfo, chunk_tree);
- /* get rid of the handled parameter */
- offset += total_length;
- number_of_causes++;
- } while(tvb_length_remaining(chunk_tvb, offset));
-
- proto_item_set_text(chunk_item, "Error chunk with %u cause%s",
- number_of_causes, plurality(number_of_causes, "", "s"));
-}
+ if (check_col(pinfo->fd, COL_INFO))
+ col_append_str(pinfo->fd, COL_INFO, "ERROR ");
+
+ if (chunk_tree) {
+ number_of_causes = 0;
+ offset = ERROR_CHUNK_FIRST_ERROR_CAUSE_OFFSET;
+ do {
+ length = tvb_get_ntohs(chunk_tvb, offset + CAUSE_LENGTH_OFFSET);
+ padding_length = nr_of_padding_bytes(length);
+ total_length = length + padding_length;
+ /* create a tvb for the chunk including the padding bytes */
+ cause_tvb = tvb_new_subset(chunk_tvb, offset, total_length, total_length);
+ dissect_error_cause(cause_tvb, pinfo, chunk_tree);
+ /* get rid of the handled parameter */
+ offset += total_length;
+ number_of_causes++;
+ } while(tvb_length_remaining(chunk_tvb, offset));
+
+ proto_item_set_text(chunk_item, "Error chunk with %u cause%s",
+ number_of_causes, plurality(number_of_causes, "", "s"));
+ }
+}
-void
+static void
dissect_cookie_echo_chunk(tvbuff_t *chunk_tvb, packet_info *pinfo, proto_tree *tree,
proto_tree *chunk_tree, proto_item *chunk_item, proto_item *flags_item)
{
length = tvb_get_ntohs(chunk_tvb, CHUNK_LENGTH_OFFSET);
padding_length = nr_of_padding_bytes(length);
cookie_length = length - CHUNK_HEADER_LENGTH;
-
- proto_tree_add_text(chunk_tree, chunk_tvb, COOKIE_ECHO_CHUNK_COOKIE_OFFSET, cookie_length,
- "Cookie (%u byte%s)",
- cookie_length, plurality(cookie_length, "", "s"));
- proto_item_set_text(chunk_item, "COOKIE ECHO chunk containing a cookie of %u byte%s",
- cookie_length, plurality(cookie_length, "", "s"));
-
- if (padding_length > 0)
- proto_tree_add_text(chunk_tree, chunk_tvb, CHUNK_HEADER_OFFSET + length, padding_length,
- "Padding: %u byte%s",
- padding_length, plurality(padding_length, "", "s"));
-}
+
+ if (check_col(pinfo->fd, COL_INFO))
+ col_append_str(pinfo->fd, COL_INFO, "COOKIE_ECHO ");
+
+ if (chunk_tree) {
+ proto_tree_add_text(chunk_tree, chunk_tvb, COOKIE_ECHO_CHUNK_COOKIE_OFFSET, cookie_length,
+ "Cookie (%u byte%s)",
+ cookie_length, plurality(cookie_length, "", "s"));
+ proto_item_set_text(chunk_item, "COOKIE ECHO chunk containing a cookie of %u byte%s",
+ cookie_length, plurality(cookie_length, "", "s"));
+
+ if (padding_length > 0)
+ proto_tree_add_text(chunk_tree, chunk_tvb, CHUNK_HEADER_OFFSET + length, padding_length,
+ "Padding: %u byte%s",
+ padding_length, plurality(padding_length, "", "s"));
+ }
+}
-void
+static void
dissect_cookie_ack_chunk(tvbuff_t *chunk_tvb, packet_info *pinfo, proto_tree *tree,
proto_tree *chunk_tree, proto_item *chunk_item, proto_item *flags_item)
-{
- proto_item_set_text(chunk_item, "COOKIE ACK chunk");
-}
+{
+ if (check_col(pinfo->fd, COL_INFO))
+ col_append_str(pinfo->fd, COL_INFO, "COOKIE_ACK ");
-void
+ if (chunk_tree) {
+ proto_item_set_text(chunk_item, "COOKIE ACK chunk");
+ }
+}
+
+static void
dissect_ecne_chunk(tvbuff_t *chunk_tvb, packet_info *pinfo, proto_tree *tree,
proto_tree *chunk_tree, proto_item *chunk_item, proto_item *flags_item)
{
guint32 lowest_tsn;
+
+ if (check_col(pinfo->fd, COL_INFO))
+ col_append_str(pinfo->fd, COL_INFO, "ECNE ");
- lowest_tsn = tvb_get_ntohl(chunk_tvb, ECNE_CHUNK_LOWEST_TSN_OFFSET);
- proto_tree_add_uint(chunk_tree, hf_sctp_ecne_chunk_lowest_tsn,
- chunk_tvb,
- ECNE_CHUNK_LOWEST_TSN_OFFSET, ECNE_CHUNK_LOWEST_TSN_LENGTH,
- lowest_tsn);
-
- proto_item_set_text(chunk_item, "ECNE chunk");
-}
+ if (chunk_tree) {
+ lowest_tsn = tvb_get_ntohl(chunk_tvb, ECNE_CHUNK_LOWEST_TSN_OFFSET);
+ proto_tree_add_uint(chunk_tree, hf_sctp_ecne_chunk_lowest_tsn,
+ chunk_tvb,
+ ECNE_CHUNK_LOWEST_TSN_OFFSET, ECNE_CHUNK_LOWEST_TSN_LENGTH,
+ lowest_tsn);
+
+ proto_item_set_text(chunk_item, "ECNE chunk");
+ }
+}
-void
+static void
dissect_cwr_chunk(tvbuff_t *chunk_tvb, packet_info *pinfo, proto_tree *tree,
proto_tree *chunk_tree, proto_item *chunk_item, proto_item *flags_item)
{
guint32 lowest_tsn;
+
+ if (check_col(pinfo->fd, COL_INFO))
+ col_append_str(pinfo->fd, COL_INFO, "CWR ");
- lowest_tsn = tvb_get_ntohl(chunk_tvb, CWR_CHUNK_LOWEST_TSN_OFFSET);
- proto_tree_add_uint(chunk_tree, hf_sctp_cwr_chunk_lowest_tsn,
- chunk_tvb,
- CWR_CHUNK_LOWEST_TSN_OFFSET, CWR_CHUNK_LOWEST_TSN_LENGTH,
- lowest_tsn);
-
- proto_item_set_text(chunk_item, "CWR chunk");
-}
+ if (chunk_tree) {
+ lowest_tsn = tvb_get_ntohl(chunk_tvb, CWR_CHUNK_LOWEST_TSN_OFFSET);
+ proto_tree_add_uint(chunk_tree, hf_sctp_cwr_chunk_lowest_tsn,
+ chunk_tvb,
+ CWR_CHUNK_LOWEST_TSN_OFFSET, CWR_CHUNK_LOWEST_TSN_LENGTH,
+ lowest_tsn);
+
+ proto_item_set_text(chunk_item, "CWR chunk");
+ }
+}
-void
+static void
dissect_shutdown_complete_chunk(tvbuff_t *chunk_tvb, packet_info *pinfo, proto_tree *tree,
proto_tree *chunk_tree, proto_item *chunk_item, proto_item *flags_item)
{
guint8 flags;
guint16 length;
proto_tree *flag_tree;
+
+ if (check_col(pinfo->fd, COL_INFO))
+ col_append_str(pinfo->fd, COL_INFO, "SHUTDOWN_COMPLETE ");
- flags = tvb_get_guint8(chunk_tvb, CHUNK_FLAGS_OFFSET);
- length = tvb_get_ntohs(chunk_tvb, CHUNK_LENGTH_OFFSET);
-
- flag_tree = proto_item_add_subtree(flags_item, ett_sctp_data_chunk_flags);
- proto_tree_add_boolean(flag_tree, hf_sctp_shutdown_complete_chunk_t_bit, chunk_tvb,
- CHUNK_FLAGS_OFFSET, CHUNK_FLAGS_LENGTH, flags);
-
- proto_item_set_text(chunk_item, "SHUTDOWN COMPLETE chunk");
-}
+ if (chunk_tree) {
+ flags = tvb_get_guint8(chunk_tvb, CHUNK_FLAGS_OFFSET);
+ length = tvb_get_ntohs(chunk_tvb, CHUNK_LENGTH_OFFSET);
+
+ flag_tree = proto_item_add_subtree(flags_item, ett_sctp_data_chunk_flags);
+ proto_tree_add_boolean(flag_tree, hf_sctp_shutdown_complete_chunk_t_bit, chunk_tvb,
+ CHUNK_FLAGS_OFFSET, CHUNK_FLAGS_LENGTH, flags);
+
+ proto_item_set_text(chunk_item, "SHUTDOWN COMPLETE chunk");
+ }
+}
-void
+static void
dissect_unknown_chunk(tvbuff_t *chunk_tvb, packet_info *pinfo, proto_tree *tree,
proto_tree *chunk_tree, proto_item *chunk_item, proto_item *flags_item)
{
guint length, chunk_value_length, padding_length;
guint8 type;
-
- length = tvb_get_ntohs(chunk_tvb, CHUNK_LENGTH_OFFSET);
- padding_length = nr_of_padding_bytes(length);
- type = tvb_get_guint8(chunk_tvb, CHUNK_TYPE_OFFSET);
-
- chunk_value_length = length - CHUNK_HEADER_LENGTH;
-
- proto_tree_add_text(chunk_tree, chunk_tvb, CHUNK_VALUE_OFFSET, chunk_value_length,
- "Chunk value (%u byte%s)",
- chunk_value_length, plurality(chunk_value_length, "", "s"));
- if (padding_length > 0)
- proto_tree_add_text(chunk_tree, chunk_tvb, CHUNK_HEADER_OFFSET + length, padding_length,
- "Padding: %u byte%s",
- padding_length, plurality(padding_length, "", "s"));
-
- proto_item_set_text(chunk_item, "Chunk of type %u and %u byte%s value",
- type, chunk_value_length, plurality(chunk_value_length, "", "s"));
+ if (check_col(pinfo->fd, COL_INFO))
+ col_append_str(pinfo->fd, COL_INFO, "UNKNOWN ");
-
+ if (chunk_tree) {
+ length = tvb_get_ntohs(chunk_tvb, CHUNK_LENGTH_OFFSET);
+ padding_length = nr_of_padding_bytes(length);
+ type = tvb_get_guint8(chunk_tvb, CHUNK_TYPE_OFFSET);
+
+ chunk_value_length = length - CHUNK_HEADER_LENGTH;
+
+ proto_tree_add_text(chunk_tree, chunk_tvb, CHUNK_VALUE_OFFSET, chunk_value_length,
+ "Chunk value (%u byte%s)",
+ chunk_value_length, plurality(chunk_value_length, "", "s"));
+
+ if (padding_length > 0)
+ proto_tree_add_text(chunk_tree, chunk_tvb, CHUNK_HEADER_OFFSET + length, padding_length,
+ "Padding: %u byte%s",
+ padding_length, plurality(padding_length, "", "s"));
+
+ proto_item_set_text(chunk_item, "Chunk of type %u and %u byte%s value",
+ type, chunk_value_length, plurality(chunk_value_length, "", "s"));
+ }
}
-void
+static void
dissect_sctp_chunk(tvbuff_t *chunk_tvb, packet_info *pinfo, proto_tree *tree, proto_tree *sctp_tree)
{
guint8 type, flags;
type = tvb_get_guint8(chunk_tvb, CHUNK_TYPE_OFFSET);
flags = tvb_get_guint8(chunk_tvb, CHUNK_FLAGS_OFFSET);
length = tvb_get_ntohs(chunk_tvb, CHUNK_LENGTH_OFFSET);
-
- /* create proto_tree stuff */
- chunk_item = proto_tree_add_text(sctp_tree, chunk_tvb,
- CHUNK_HEADER_OFFSET, tvb_length(chunk_tvb), "Incomplete chunk");
- chunk_tree = proto_item_add_subtree(chunk_item, ett_sctp_chunk);
-
- /* then insert the chunk header components into the protocol tree */
- proto_tree_add_uint_format(chunk_tree, hf_sctp_chunk_type,
- chunk_tvb, CHUNK_TYPE_OFFSET, CHUNK_TYPE_LENGTH,
- type, "Identifier: %u (%s)",
- type, val_to_str(type, sctp_chunk_type_values, "unknown"));
- flags_item = proto_tree_add_uint(chunk_tree, hf_sctp_chunk_flags,
- chunk_tvb, CHUNK_FLAGS_OFFSET, CHUNK_FLAGS_LENGTH,
- flags);
- proto_tree_add_uint(chunk_tree, hf_sctp_chunk_length,
- chunk_tvb, CHUNK_LENGTH_OFFSET, CHUNK_LENGTH_LENGTH,
- length);
+
+ if (tree) {
+ /* create proto_tree stuff */
+ chunk_item = proto_tree_add_text(sctp_tree, chunk_tvb,
+ CHUNK_HEADER_OFFSET, tvb_length(chunk_tvb), "Incomplete chunk");
+ chunk_tree = proto_item_add_subtree(chunk_item, ett_sctp_chunk);
+
+ /* then insert the chunk header components into the protocol tree */
+ proto_tree_add_uint_format(chunk_tree, hf_sctp_chunk_type,
+ chunk_tvb, CHUNK_TYPE_OFFSET, CHUNK_TYPE_LENGTH,
+ type, "Identifier: %u (%s)",
+ type, val_to_str(type, sctp_chunk_type_values, "unknown"));
+ flags_item = proto_tree_add_uint(chunk_tree, hf_sctp_chunk_flags,
+ chunk_tvb, CHUNK_FLAGS_OFFSET, CHUNK_FLAGS_LENGTH,
+ flags);
+ proto_tree_add_uint(chunk_tree, hf_sctp_chunk_length,
+ chunk_tvb, CHUNK_LENGTH_OFFSET, CHUNK_LENGTH_LENGTH,
+ length);
+ } else {
+ chunk_tree = NULL;
+ chunk_item = NULL;
+ flags_item = NULL;
+ };
/* now dissect the chunk value */
+
switch(type) {
case SCTP_DATA_CHUNK_ID:
dissect_data_chunk(chunk_tvb, pinfo, tree, chunk_tree, chunk_item, flags_item);
break;
case SCTP_SHUTDOWN_COMPLETE_CHUNK_ID:
dissect_shutdown_complete_chunk(chunk_tvb, pinfo, tree, chunk_tree, chunk_item, flags_item);
- break;
+ break;
default:
dissect_unknown_chunk(chunk_tvb, pinfo, tree, chunk_tree, chunk_item, flags_item);
break;
- }
+ }
}
-void
+static void
dissect_sctp_chunks(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, proto_tree *sctp_tree)
{
tvbuff_t *chunk_tvb;
checksum = tvb_get_ntohl(tvb, CHECKSUM_OFFSET);
/* update pi structure */
- pi.ptype = PT_SCTP;
- pi.srcport = source_port;
+ pi.ptype = PT_SCTP;
+ pi.srcport = source_port;
pi.destport = destination_port;
/* make entry in the Protocol column on summary display */
if (check_col(pinfo->fd, COL_PROTOCOL))
col_set_str(pinfo->fd, COL_PROTOCOL, "SCTP");
- /* Make entries in Info column on summary display */
- if (check_col(pinfo->fd, COL_INFO))
- col_add_fstr(pinfo->fd, COL_INFO, "%u > %u: tag 0x%x",
- source_port, destination_port, verification_tag);
+ /* Clear entries in Info column on summary display */
+ if (check_col(pinfo->fd, COL_INFO))
+ col_add_str(pinfo->fd, COL_INFO, "");
/* In the interest of speed, if "tree" is NULL, don't do any work not
necessary to generate protocol tree items. */
tvb, CHECKSUM_OFFSET, CHECKSUM_LENGTH, checksum,
"Adler-32 checksum: 0x%08x (%s)",
checksum, sctp_checksum_state(tvb, checksum));
-
- /* add all chunks of the sctp datagram to the protocol tree */
- dissect_sctp_chunks(tvb, pinfo, tree, sctp_tree);
+ } else {
+ sctp_tree = NULL;
};
+ /* add all chunks of the sctp datagram to the protocol tree */
+ dissect_sctp_chunks(tvb, pinfo, tree, sctp_tree);
}
/* Register the protocol with Ethereal */
void
proto_reg_handoff_sctp(void)
{
- dissector_add("ip.proto", IP_PROTO_SCTP, dissect_sctp, proto_sctp);
+ dissector_add("ip.proto", IP_PROTO_SCTP, dissect_sctp, proto_sctp);
}
git.samba.org / obnox / wireshark / wip.git / commitdiff