/* packet-sctp.c
* Routines for Stream Control Transmission Protocol dissection
* It should be compilant to
- * - RFC 2960, for basic SCTP support
- * - http://www.ietf.org/internet-drafts/draft-ietf-tsvwg-addip-sctp-06.txt for the add-IP extension
- * - http://www.ietf.org/internet-drafts/draft-stewart-tsvwg-prsctp-01.txt for the 'Partial Reliability' extension
- * - http://www.ietf.org/internet-drafts/draft-ietf-tsvwg-sctpcsum-07.txt
- * Copyright 2000, 2001, 2002, Michael Tuexen <Michael.Tuexen [AT] siemens.com>
+ * - RFC 2960
+ * - RFC 3309
+ * - http://www.ietf.org/internet-drafts/draft-ietf-tsvwg-sctpimpguide-09.txt
+ * - http://www.ietf.org/internet-drafts/draft-ietf-tsvwg-addip-sctp-08.txt for the add-IP extension
+ * - http://www.ietf.org/internet-drafts/draft-stewart-tsvwg-prsctp-04.txt for the 'Partial Reliability' extension
+ * - another upcoming ID on packetdrop stuff.
+ * Copyright 2000, 2001, 2002, 2003, 2004 Michael Tuexen <tuexen [AT] fh-muenster.de>
* Still to do (so stay tuned)
* - support for reassembly
- * - code cleanup
+ * - error checking mode
+ * * padding errors
+ * * length errors
+ * * bundling errors
+ * * value errors
*
- * $Id: packet-sctp.c,v 1.43 2002/12/02 23:43:29 guy Exp $
+ * $Id: packet-sctp.c,v 1.72 2004/05/24 02:25:19 guy Exp $
*
* Ethereal - Network traffic analyzer
* By Gerald Combs <gerald@ethereal.com>
# include "config.h"
#endif
+#include <string.h>
#include "prefs.h"
#include <epan/packet.h>
+#include "tap.h"
#include "ipproto.h"
+#include "packet-sctp.h"
+#include "sctpppids.h"
+
+#define NETWORK_BYTE_ORDER FALSE
+#define ADD_PADDING(x) ((((x) + 3) >> 2) << 2)
+#define UDP_TUNNELING_PORT 9899
/* Initialize the protocol and registered fields */
static int proto_sctp = -1;
-static int hf_sctp_port = -1;
-static int hf_sctp_source_port = -1;
-static int hf_sctp_destination_port = -1;
-static int hf_sctp_verification_tag = -1;
-static int hf_sctp_checksum = -1;
-static int hf_sctp_checksum_bad = -1;
-
-static int hf_sctp_chunk_type = -1;
-static int hf_sctp_chunk_flags = -1;
-static int hf_sctp_chunk_length = -1;
-
-static int hf_sctp_init_chunk_initiate_tag = -1;
-static int hf_sctp_init_chunk_adv_rec_window_credit = -1;
-static int hf_sctp_init_chunk_number_of_outbound_streams = -1;
-static int hf_sctp_init_chunk_number_of_inbound_streams = -1;
-static int hf_sctp_init_chunk_initial_tsn = -1;
-
-static int hf_sctp_cumulative_tsn_ack = -1;
-
-static int hf_sctp_data_chunk_tsn = -1;
-static int hf_sctp_data_chunk_stream_id = -1;
-static int hf_sctp_data_chunk_stream_seq_number = -1;
-static int hf_sctp_data_chunk_payload_proto_id = -1;
-
-static int hf_sctp_data_chunk_e_bit = -1;
-static int hf_sctp_data_chunk_b_bit = -1;
-static int hf_sctp_data_chunk_u_bit = -1;
-
-static int hf_sctp_sack_chunk_cumulative_tsn_ack = -1;
-static int hf_sctp_sack_chunk_adv_rec_window_credit = -1;
-static int hf_sctp_sack_chunk_number_of_gap_blocks = -1;
-static int hf_sctp_sack_chunk_number_of_dup_tsns = -1;
-static int hf_sctp_sack_chunk_gap_block_start = -1;
-static int hf_sctp_sack_chunk_gap_block_end = -1;
-static int hf_sctp_sack_chunk_duplicate_tsn = -1;
-
-static int hf_sctp_shutdown_chunk_cumulative_tsn_ack = -1;
-
-static int hf_sctp_cwr_chunk_lowest_tsn = -1;
-
-static int hf_sctp_ecne_chunk_lowest_tsn = -1;
-
-static int hf_sctp_shutdown_complete_chunk_t_bit = -1;
-
-static int hf_sctp_chunk_parameter_type = -1;
-static int hf_sctp_chunk_parameter_length = -1;
-static int hf_sctp_parameter_ipv4_address = -1;
-static int hf_sctp_parameter_ipv6_address = -1;
-static int hf_sctp_parameter_cookie_preservative_increment = -1;
-static int hf_sctp_parameter_hostname_hostname = -1;
-static int hf_sctp_supported_address_types_parameter = -1;
-
-static int hf_sctp_cause_code = -1;
-static int hf_sctp_cause_length = -1;
-static int hf_sctp_cause_stream_identifier = -1;
-
-static int hf_sctp_cause_number_of_missing_parameters = -1;
-static int hf_sctp_cause_missing_parameter_type = -1;
-
-static int hf_sctp_cause_measure_of_staleness = -1;
-
-static int hf_sctp_cause_tsn = -1;
-
-static int hf_sctp_forward_tsn_chunk_tsn = -1;
-static int hf_sctp_forward_tsn_chunk_sid = -1;
-static int hf_sctp_forward_tsn_chunk_ssn = -1;
-
-static int hf_sctp_asconf_ack_serial = -1;
-static int hf_sctp_asconf_serial = -1;
-static int hf_sctp_correlation_id = -1;
+static int hf_port = -1;
+static int hf_source_port = -1;
+static int hf_destination_port = -1;
+static int hf_verification_tag = -1;
+static int hf_checksum = -1;
+static int hf_checksum_bad = -1;
+
+static int hf_chunk_type = -1;
+static int hf_chunk_flags = -1;
+static int hf_chunk_bit_1 = -1;
+static int hf_chunk_bit_2 = -1;
+static int hf_chunk_length = -1;
+static int hf_chunk_padding = -1;
+static int hf_chunk_value = -1;
+
+static int hf_initiate_tag = -1;
+static int hf_init_chunk_initiate_tag = -1;
+static int hf_init_chunk_adv_rec_window_credit = -1;
+static int hf_init_chunk_number_of_outbound_streams = -1;
+static int hf_init_chunk_number_of_inbound_streams = -1;
+static int hf_init_chunk_initial_tsn = -1;
+
+static int hf_initack_chunk_initiate_tag = -1;
+static int hf_initack_chunk_adv_rec_window_credit = -1;
+static int hf_initack_chunk_number_of_outbound_streams = -1;
+static int hf_initack_chunk_number_of_inbound_streams = -1;
+static int hf_initack_chunk_initial_tsn = -1;
+
+static int hf_cumulative_tsn_ack = -1;
+
+static int hf_data_chunk_tsn = -1;
+static int hf_data_chunk_stream_id = -1;
+static int hf_data_chunk_stream_seq_number = -1;
+static int hf_data_chunk_payload_proto_id = -1;
+
+static int hf_data_chunk_e_bit = -1;
+static int hf_data_chunk_b_bit = -1;
+static int hf_data_chunk_u_bit = -1;
+
+static int hf_sack_chunk_cumulative_tsn_ack = -1;
+static int hf_sack_chunk_adv_rec_window_credit = -1;
+static int hf_sack_chunk_number_of_gap_blocks = -1;
+static int hf_sack_chunk_number_of_dup_tsns = -1;
+static int hf_sack_chunk_gap_block_start = -1;
+static int hf_sack_chunk_gap_block_end = -1;
+static int hf_sack_chunk_duplicate_tsn = -1;
+
+static int hf_shutdown_chunk_cumulative_tsn_ack = -1;
+static int hf_cookie = -1;
+static int hf_cwr_chunk_lowest_tsn = -1;
+
+static int hf_ecne_chunk_lowest_tsn = -1;
+static int hf_abort_chunk_t_bit = -1;
+static int hf_shutdown_complete_chunk_t_bit = -1;
+
+static int hf_parameter_type = -1;
+static int hf_parameter_length = -1;
+static int hf_parameter_value = -1;
+static int hf_parameter_padding = -1;
+static int hf_parameter_bit_1 = -1;
+static int hf_parameter_bit_2 = -1;
+static int hf_ipv4_address = -1;
+static int hf_ipv6_address = -1;
+static int hf_heartbeat_info = -1;
+static int hf_state_cookie = -1;
+static int hf_cookie_preservative_increment = -1;
+static int hf_hostname = -1;
+static int hf_supported_address_type = -1;
+
+static int hf_cause_code = -1;
+static int hf_cause_length = -1;
+static int hf_cause_padding = -1;
+static int hf_cause_info = -1;
+
+static int hf_cause_stream_identifier = -1;
+static int hf_cause_reserved = -1;
+
+static int hf_cause_number_of_missing_parameters = -1;
+static int hf_cause_missing_parameter_type = -1;
+
+static int hf_cause_measure_of_staleness = -1;
+
+static int hf_cause_tsn = -1;
+
+static int hf_forward_tsn_chunk_tsn = -1;
+static int hf_forward_tsn_chunk_sid = -1;
+static int hf_forward_tsn_chunk_ssn = -1;
+
+static int hf_asconf_ack_serial = -1;
+static int hf_asconf_serial = -1;
+static int hf_correlation_id = -1;
+
+static int hf_adap_indication = -1;
+
+static int hf_pktdrop_chunk_m_bit = -1;
+/*
+static int hf_pktdrop_chunk_s_bit = -1;
+*/
+static int hf_pktdrop_chunk_b_bit = -1;
+static int hf_pktdrop_chunk_t_bit = -1;
+static int hf_pktdrop_chunk_bandwidth = -1;
+static int hf_pktdrop_chunk_queuesize = -1;
+static int hf_pktdrop_chunk_truncated_length = -1;
+static int hf_pktdrop_chunk_reserved = -1;
+static int hf_pktdrop_chunk_data_field = -1;
-static int hf_sctp_adap_indication = -1;
-static int hf_sctp_abort_chunk_t_bit = -1;
static dissector_table_t sctp_port_dissector_table;
static dissector_table_t sctp_ppi_dissector_table;
-
+static heur_dissector_list_t sctp_heur_subdissector_list;
+static int sctp_tap = -1;
static module_t *sctp_module;
/* Initialize the subtree pointers */
static gint ett_sctp_chunk = -1;
static gint ett_sctp_chunk_parameter = -1;
static gint ett_sctp_chunk_cause = -1;
+static gint ett_sctp_chunk_type = -1;
static gint ett_sctp_data_chunk_flags = -1;
-static gint ett_sctp_shutdown_complete_chunk_flags = -1;
static gint ett_sctp_abort_chunk_flags = -1;
+static gint ett_sctp_shutdown_complete_chunk_flags = -1;
+static gint ett_sctp_pktdrop_chunk_flags = -1;
+static gint ett_sctp_parameter_type= -1;
static gint ett_sctp_sack_chunk_gap_block = -1;
-static gint ett_sctp_supported_address_types_parameter = -1;
static gint ett_sctp_unrecognized_parameter_parameter = -1;
static dissector_handle_t data_handle;
#define SCTP_SHUTDOWN_COMPLETE_CHUNK_ID 14
#define SCTP_FORWARD_TSN_CHUNK_ID 192
#define SCTP_ASCONF_ACK_CHUNK_ID 0x80
+#define SCTP_PKTDROP_CHUNK_ID 0X81
#define SCTP_ASCONF_CHUNK_ID 0XC1
-
#define SCTP_IETF_EXT 255
-static const value_string sctp_chunk_type_values[] = {
+static const value_string chunk_type_values[] = {
{ SCTP_DATA_CHUNK_ID, "DATA" },
{ SCTP_INIT_CHUNK_ID, "INIT" },
{ SCTP_INIT_ACK_CHUNK_ID, "INIT_ACK" },
{ SCTP_SHUTDOWN_COMPLETE_CHUNK_ID, "SHUTDOWN_COMPLETE" },
{ SCTP_FORWARD_TSN_CHUNK_ID, "FORWARD TSN" },
{ SCTP_ASCONF_ACK_CHUNK_ID, "ASCONF_ACK" },
+ { SCTP_PKTDROP_CHUNK_ID, "PKTDROP" },
{ SCTP_ASCONF_CHUNK_ID, "ASCONF" },
{ SCTP_IETF_EXT, "IETF_EXTENSION" },
{ 0, NULL } };
-#define HEARTBEAT_INFO_PARAMETER_ID 0x0001
-#define IPV4ADDRESS_PARAMETER_ID 0x0005
-#define IPV6ADDRESS_PARAMETER_ID 0x0006
-#define STATE_COOKIE_PARAMETER_ID 0x0007
-#define UNREC_PARA_PARAMETER_ID 0x0008
-#define COOKIE_PRESERVATIVE_PARAMETER_ID 0x0009
-#define HOSTNAME_ADDRESS_PARAMETER_ID 0x000b
-#define SUPPORTED_ADDRESS_TYPES_PARAMETER_ID 0x000c
-#define ECN_PARAMETER_ID 0x8000
-#define FORWARD_TSN_SUPPORTED_PARAMETER_ID 0xC000
-#define ADD_IP_ADDRESS_PARAMETER_ID 0xC001
-#define DEL_IP_ADDRESS_PARAMETER_ID 0xC002
-#define ERROR_CAUSE_INDICATION_PARAMETER_ID 0xC003
-#define SET_PRIMARY_ADDRESS_PARAMETER_ID 0xC004
-#define SUCCESS_REPORT_PARAMETER_ID 0xC005
-#define ADAP_LAYER_INDICATION_PARAMETER_ID 0xC006
-
-static const value_string sctp_parameter_identifier_values[] = {
- { HEARTBEAT_INFO_PARAMETER_ID, "Heartbeat info" },
- { IPV4ADDRESS_PARAMETER_ID, "IPv4 address" },
- { IPV6ADDRESS_PARAMETER_ID, "IPv6 address" },
- { STATE_COOKIE_PARAMETER_ID, "State cookie" },
- { UNREC_PARA_PARAMETER_ID, "Unrecognized parameters" },
- { COOKIE_PRESERVATIVE_PARAMETER_ID, "Cookie preservative" },
- { HOSTNAME_ADDRESS_PARAMETER_ID, "Hostname address" },
- { SUPPORTED_ADDRESS_TYPES_PARAMETER_ID, "Supported address types" },
- { ECN_PARAMETER_ID, "ECN" },
- { FORWARD_TSN_SUPPORTED_PARAMETER_ID, "Forward TSN supported" },
- { ADD_IP_ADDRESS_PARAMETER_ID, "Add IP address" },
- { DEL_IP_ADDRESS_PARAMETER_ID, "Delete IP address" },
- { ERROR_CAUSE_INDICATION_PARAMETER_ID, "Error cause indication" },
- { SET_PRIMARY_ADDRESS_PARAMETER_ID, "Set primary address" },
- { SUCCESS_REPORT_PARAMETER_ID, "Success report" },
- { ADAP_LAYER_INDICATION_PARAMETER_ID, "Adaptation Layer Indication" },
- { 0, NULL } };
-
-#define PARAMETER_TYPE_LENGTH 2
-#define PARAMETER_LENGTH_LENGTH 2
-#define PARAMETER_HEADER_LENGTH (PARAMETER_TYPE_LENGTH + PARAMETER_LENGTH_LENGTH)
-
-#define PARAMETER_HEADER_OFFSET 0
-#define PARAMETER_TYPE_OFFSET PARAMETER_HEADER_OFFSET
-#define PARAMETER_LENGTH_OFFSET (PARAMETER_TYPE_OFFSET + PARAMETER_TYPE_LENGTH)
-#define PARAMETER_VALUE_OFFSET (PARAMETER_LENGTH_OFFSET + PARAMETER_LENGTH_LENGTH)
-
-#define HEARTBEAT_INFO_PARAMETER_INFO_OFFSET PARAMETER_VALUE_OFFSET
-#define HEARTBEAT_INFO_PARAMETER_HEADER_LENGTH PARAMETER_HEADER_LENGTH
-
-#define IPV4_ADDRESS_LENGTH 4
-#define IPV6_ADDRESS_LENGTH 16
-
-#define STATE_COOKIE_PARAMETER_HEADER_LENGTH PARAMETER_HEADER_LENGTH
-#define STATE_COOKIE_PARAMETER_COOKIE_OFFSET PARAMETER_VALUE_OFFSET
-
-#define COOKIE_PRESERVATIVE_PARAMETER_INCR_OFFSET PARAMETER_VALUE_OFFSET
-#define COOKIE_PRESERVATIVE_PARAMETER_INCR_LENGTH 4
-#define SUPPORTED_ADDRESS_TYPE_PARAMETER_ADDRESS_TYPE_LENGTH 2
-
-#define CAUSE_CODE_LENGTH 2
-#define CAUSE_LENGTH_LENGTH 2
-#define CAUSE_HEADER_LENGTH (CAUSE_CODE_LENGTH + CAUSE_LENGTH_LENGTH)
-
-#define CAUSE_HEADER_OFFSET 0
-#define CAUSE_CODE_OFFSET CAUSE_HEADER_OFFSET
-#define CAUSE_LENGTH_OFFSET (CAUSE_CODE_OFFSET + CAUSE_CODE_LENGTH)
-#define CAUSE_INFO_OFFSET (CAUSE_LENGTH_OFFSET + CAUSE_LENGTH_LENGTH)
-
-#define CAUSE_STREAM_IDENTIFIER_LENGTH 2
-#define CAUSE_RESERVED_LENGTH 2
-#define CAUSE_STREAM_IDENTIFIER_OFFSET CAUSE_INFO_OFFSET
-#define CAUSE_RESERVED_OFFSET (CAUSE_STREAM_IDENTIFIER_OFFSET + CAUSE_STREAM_IDENTIFIER_LENGTH)
-
-#define CAUSE_NUMBER_OF_MISSING_PARAMETERS_LENGTH 4
-#define CAUSE_MISSING_PARAMETER_TYPE_LENGTH 2
-
-#define CAUSE_NUMBER_OF_MISSING_PARAMETERS_OFFSET CAUSE_INFO_OFFSET
-#define CAUSE_FIRST_MISSING_PARAMETER_TYPE_OFFSET (CAUSE_NUMBER_OF_MISSING_PARAMETERS_OFFSET + \
- CAUSE_NUMBER_OF_MISSING_PARAMETERS_LENGTH )
-
-#define CAUSE_MEASURE_OF_STALENESS_LENGTH 4
-#define CAUSE_MEASURE_OF_STALENESS_OFFSET CAUSE_INFO_OFFSET
-
-#define CAUSE_TSN_LENGTH 4
-#define CAUSE_TSN_OFFSET CAUSE_INFO_OFFSET
-
-#define INVALID_STREAM_IDENTIFIER 0x01
-#define MISSING_MANDATORY_PARAMETERS 0x02
-#define STALE_COOKIE_ERROR 0x03
-#define OUT_OF_RESOURCE 0x04
-#define UNRESOLVABLE_ADDRESS 0x05
-#define UNRECOGNIZED_CHUNK_TYPE 0x06
-#define INVALID_MANDATORY_PARAMETER 0x07
-#define UNRECOGNIZED_PARAMETERS 0x08
-#define NO_USER_DATA 0x09
-#define COOKIE_RECEIVED_WHILE_SHUTTING_DOWN 0x0a
-#define RESTART_WITH_NEW_ADDRESSES 0x0b
-#define REQUEST_TO_DELETE_LAST_ADDRESS 0x0100
-#define OPERATION_REFUSED_DUE_TO_RESOURCE_SHORTAGE 0X0101
-#define REQUEST_TO_DELETE_SOURCE_ADDRESS 0x0102
-#define ABORT_DUE_TO_ILLEGAL_ASCONF 0x0103
-
-static const value_string sctp_cause_code_values[] = {
- { INVALID_STREAM_IDENTIFIER, "Invalid stream identifier" },
- { MISSING_MANDATORY_PARAMETERS, "Missing mandator parameter" },
- { STALE_COOKIE_ERROR, "Stale cookie error" },
- { OUT_OF_RESOURCE, "Out of resource" },
- { UNRESOLVABLE_ADDRESS, "Unresolvable address" },
- { UNRECOGNIZED_CHUNK_TYPE, "Unrecognized chunk type " },
- { INVALID_MANDATORY_PARAMETER, "Invalid mandatory parameter" },
- { UNRECOGNIZED_PARAMETERS, "Unrecognized parameters" },
- { NO_USER_DATA, "No user data" },
- { COOKIE_RECEIVED_WHILE_SHUTTING_DOWN, "Cookie received while shutting down" },
- { RESTART_WITH_NEW_ADDRESSES, "Restart of an association with new addresses" },
- { REQUEST_TO_DELETE_LAST_ADDRESS, "Request to delete last address" },
- { OPERATION_REFUSED_DUE_TO_RESOURCE_SHORTAGE, "Operation refused due to resource shortage" },
- { REQUEST_TO_DELETE_SOURCE_ADDRESS, "Request to delete source address" },
- { ABORT_DUE_TO_ILLEGAL_ASCONF, "Association Aborted due to illegal ASCONF-ACK" },
- { 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" },
{ SUA_PAYLOAD_PROTOCOL_ID, "SUA" },
{ M2PA_PAYLOAD_PROTOCOL_ID, "M2PA" },
{ V5UA_PAYLOAD_PROTOCOL_ID, "V5UA" },
+ { H248_PAYLOAD_PROTOCOL_ID, "H.248/MEGACO" },
+ { BICC_PAYLOAD_PROTOCOL_ID, "BICC/Q.2150.3" },
+ { TALI_PAYLOAD_PROTOCOL_ID, "TALI" },
+ { DUA_PAYLOAD_PROTOCOL_ID, "DUA" },
+ { ASAP_PAYLOAD_PROTOCOL_ID, "ASAP" },
+ { ENRP_PAYLOAD_PROTOCOL_ID, "ENRP" },
+ { H323_PAYLOAD_PROTOCOL_ID, "H.323" },
{ 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 VERIFICATION_TAG_LENGTH 4
-#define CHECKSUM_LENGTH 4
-#define COMMON_HEADER_LENGTH (SOURCE_PORT_LENGTH + \
- DESTINATION_PORT_LENGTH + \
- VERIFICATION_TAG_LENGTH + \
- CHECKSUM_LENGTH)
-#define SOURCE_PORT_OFFSET 0
-#define DESTINATION_PORT_OFFSET (SOURCE_PORT_OFFSET + SOURCE_PORT_LENGTH)
-#define VERIFICATION_TAG_OFFSET (DESTINATION_PORT_OFFSET + DESTINATION_PORT_LENGTH)
-#define CHECKSUM_OFFSET (VERIFICATION_TAG_OFFSET + VERIFICATION_TAG_LENGTH)
-/* The structure of the chunk header is described by the following constants */
#define CHUNK_TYPE_LENGTH 1
#define CHUNK_FLAGS_LENGTH 1
#define CHUNK_LENGTH_LENGTH 2
#define CHUNK_LENGTH_OFFSET (CHUNK_FLAGS_OFFSET + CHUNK_FLAGS_LENGTH)
#define CHUNK_VALUE_OFFSET (CHUNK_LENGTH_OFFSET + CHUNK_LENGTH_LENGTH)
-/* The following constants describe the structure of DATA chunks */
-#define DATA_CHUNK_TSN_LENGTH 4
-#define DATA_CHUNK_STREAM_ID_LENGTH 2
-#define DATA_CHUNK_STREAM_SEQ_NUMBER_LENGTH 2
-#define DATA_CHUNK_PAYLOAD_PROTOCOL_ID_LENGTH 4
-
-#define DATA_CHUNK_TSN_OFFSET (CHUNK_VALUE_OFFSET + 0)
-#define DATA_CHUNK_STREAM_ID_OFFSET (DATA_CHUNK_TSN_OFFSET + DATA_CHUNK_TSN_LENGTH)
-#define DATA_CHUNK_STREAM_SEQ_NUMBER_OFFSET (DATA_CHUNK_STREAM_ID_OFFSET + \
- DATA_CHUNK_STREAM_SEQ_NUMBER_LENGTH)
-#define DATA_CHUNK_PAYLOAD_PROTOCOL_ID_OFFSET (DATA_CHUNK_STREAM_SEQ_NUMBER_OFFSET + \
- DATA_CHUNK_STREAM_SEQ_NUMBER_LENGTH)
-#define DATA_CHUNK_PAYLOAD_OFFSET (DATA_CHUNK_PAYLOAD_PROTOCOL_ID_OFFSET + \
- DATA_CHUNK_PAYLOAD_PROTOCOL_ID_LENGTH)
-
-#define DATA_CHUNK_HEADER_LENGTH (CHUNK_HEADER_LENGTH + \
- DATA_CHUNK_TSN_LENGTH + \
- DATA_CHUNK_STREAM_ID_LENGTH + \
- DATA_CHUNK_STREAM_SEQ_NUMBER_LENGTH + \
- DATA_CHUNK_PAYLOAD_PROTOCOL_ID_LENGTH)
-
-#define SCTP_DATA_CHUNK_E_BIT 0x01
-#define SCTP_DATA_CHUNK_B_BIT 0x02
-#define SCTP_DATA_CHUNK_U_BIT 0x04
-
-#define INIT_CHUNK_INITIATE_TAG_LENGTH 4
-#define INIT_CHUNK_ADV_REC_WINDOW_CREDIT_LENGTH 4
-#define INIT_CHUNK_NUMBER_OF_OUTBOUND_STREAMS_LENGTH 2
-#define INIT_CHUNK_NUMBER_OF_INBOUND_STREAMS_LENGTH 2
-#define INIT_CHUNK_INITIAL_TSN_LENGTH 4
-
-#define INIT_CHUNK_INITIATE_TAG_OFFSET CHUNK_VALUE_OFFSET
-#define INIT_CHUNK_ADV_REC_WINDOW_CREDIT_OFFSET (INIT_CHUNK_INITIATE_TAG_OFFSET + \
- INIT_CHUNK_INITIATE_TAG_LENGTH )
-#define INIT_CHUNK_NUMBER_OF_OUTBOUND_STREAMS_OFFSET (INIT_CHUNK_ADV_REC_WINDOW_CREDIT_OFFSET + \
- INIT_CHUNK_ADV_REC_WINDOW_CREDIT_LENGTH )
-#define INIT_CHUNK_NUMBER_OF_INBOUND_STREAMS_OFFSET (INIT_CHUNK_NUMBER_OF_OUTBOUND_STREAMS_OFFSET + \
- INIT_CHUNK_NUMBER_OF_OUTBOUND_STREAMS_LENGTH )
-#define INIT_CHUNK_INITIAL_TSN_OFFSET (INIT_CHUNK_NUMBER_OF_INBOUND_STREAMS_OFFSET + \
- INIT_CHUNK_NUMBER_OF_INBOUND_STREAMS_LENGTH )
-#define INIT_CHUNK_VARIABLE_LENGTH_PARAMETER_OFFSET (INIT_CHUNK_INITIAL_TSN_OFFSET + \
- INIT_CHUNK_INITIAL_TSN_LENGTH )
-
-
-#define SACK_CHUNK_CUMULATIVE_TSN_ACK_LENGTH 4
-#define SACK_CHUNK_ADV_REC_WINDOW_CREDIT_LENGTH 4
-#define SACK_CHUNK_NUMBER_OF_GAP_BLOCKS_LENGTH 2
-#define SACK_CHUNK_NUMBER_OF_DUP_TSNS_LENGTH 2
-#define SACK_CHUNK_GAP_BLOCK_LENGTH 4
-#define SACK_CHUNK_GAP_BLOCK_START_LENGTH 2
-#define SACK_CHUNK_GAP_BLOCK_END_LENGTH 2
-#define SACK_CHUNK_DUP_TSN_LENGTH 4
-
-#define SACK_CHUNK_CUMULATIVE_TSN_ACK_OFFSET (CHUNK_VALUE_OFFSET + 0)
-#define SACK_CHUNK_ADV_REC_WINDOW_CREDIT_OFFSET (SACK_CHUNK_CUMULATIVE_TSN_ACK_OFFSET + \
- SACK_CHUNK_CUMULATIVE_TSN_ACK_LENGTH)
-#define SACK_CHUNK_NUMBER_OF_GAP_BLOCKS_OFFSET (SACK_CHUNK_ADV_REC_WINDOW_CREDIT_OFFSET + \
- SACK_CHUNK_ADV_REC_WINDOW_CREDIT_LENGTH)
-#define SACK_CHUNK_NUMBER_OF_DUP_TSNS_OFFSET (SACK_CHUNK_NUMBER_OF_GAP_BLOCKS_OFFSET + \
- SACK_CHUNK_NUMBER_OF_GAP_BLOCKS_LENGTH)
-#define SACK_CHUNK_GAP_BLOCK_OFFSET (SACK_CHUNK_NUMBER_OF_DUP_TSNS_OFFSET + \
- SACK_CHUNK_NUMBER_OF_DUP_TSNS_LENGTH)
-
-#define HEARTBEAT_CHUNK_INFO_OFFSET CHUNK_VALUE_OFFSET
-
-#define SHUTDOWN_CHUNK_CUMULATIVE_TSN_ACK_OFFSET CHUNK_VALUE_OFFSET
-#define SHUTDOWN_CHUNK_CUMULATIVE_TSN_ACK_LENGTH 4
-
-#define ABORT_CHUNK_FIRST_ERROR_CAUSE_OFFSET 4
-#define ERROR_CHUNK_FIRST_ERROR_CAUSE_OFFSET 4
-
-#define COOKIE_ECHO_CHUNK_COOKIE_OFFSET CHUNK_VALUE_OFFSET
-
-#define ECNE_CHUNK_LOWEST_TSN_OFFSET CHUNK_VALUE_OFFSET
-#define ECNE_CHUNK_LOWEST_TSN_LENGTH 4
-
-#define CWR_CHUNK_LOWEST_TSN_OFFSET CHUNK_VALUE_OFFSET
-#define CWR_CHUNK_LOWEST_TSN_LENGTH 4
-
-#define SCTP_SHUTDOWN_COMPLETE_CHUNK_T_BIT 0x01
-
-static const true_false_string sctp_data_chunk_e_bit_value = {
- "Last segment",
- "Not the last segment"
-};
-
-static const true_false_string sctp_data_chunk_b_bit_value = {
- "First segment",
- "Subsequent segment"
-};
+#define PARAMETER_TYPE_LENGTH 2
+#define PARAMETER_LENGTH_LENGTH 2
+#define PARAMETER_HEADER_LENGTH (PARAMETER_TYPE_LENGTH + PARAMETER_LENGTH_LENGTH)
-static const true_false_string sctp_data_chunk_u_bit_value = {
- "Unordered delivery",
- "Ordered deliviery"
-};
+#define PARAMETER_HEADER_OFFSET 0
+#define PARAMETER_TYPE_OFFSET PARAMETER_HEADER_OFFSET
+#define PARAMETER_LENGTH_OFFSET (PARAMETER_TYPE_OFFSET + PARAMETER_TYPE_LENGTH)
+#define PARAMETER_VALUE_OFFSET (PARAMETER_LENGTH_OFFSET + PARAMETER_LENGTH_LENGTH)
-static const true_false_string sctp_shutdown_complete_chunk_t_bit_value = {
- "No TCB destroyed",
- "TCB destroyed"
-};
+#define SOURCE_PORT_LENGTH 2
+#define DESTINATION_PORT_LENGTH 2
+#define VERIFICATION_TAG_LENGTH 4
+#define CHECKSUM_LENGTH 4
+#define COMMON_HEADER_LENGTH (SOURCE_PORT_LENGTH + \
+ DESTINATION_PORT_LENGTH + \
+ VERIFICATION_TAG_LENGTH + \
+ CHECKSUM_LENGTH)
+#define SOURCE_PORT_OFFSET 0
+#define DESTINATION_PORT_OFFSET (SOURCE_PORT_OFFSET + SOURCE_PORT_LENGTH)
+#define VERIFICATION_TAG_OFFSET (DESTINATION_PORT_OFFSET + DESTINATION_PORT_LENGTH)
+#define CHECKSUM_OFFSET (VERIFICATION_TAG_OFFSET + VERIFICATION_TAG_LENGTH)
#define SCTP_CHECKSUM_NONE 0
#define SCTP_CHECKSUM_ADLER32 1
#define SCTP_CHECKSUM_CRC32C 2
#define SCTP_CHECKSUM_AUTOMATIC 3
-static gint sctp_checksum = SCTP_CHECKSUM_ADLER32;
+static gboolean show_always_control_chunks = TRUE;
+static gint sctp_checksum = SCTP_CHECKSUM_CRC32C;
+static struct _sctp_info sctp_info;
/* adler32.c -- compute the Adler-32 checksum of a data stream
* Copyright (C) 1995-1996 Mark Adler
#define BASE 65521L /* largest prime smaller than 65536 */
#define NMAX 5540 /* NMAX is the largest n - 12 such that */
- /* 255n(n+1)/2 + (n+1)(BASE-1) <= 2^32-1 */
+ /* 255n(n+1)/2 + (n+1)(BASE-1) <= 2^32-1 */
#define DO1(buf,i) {s1 += buf[i]; s2 += s1;}
#define DO2(buf,i) DO1(buf,i); DO1(buf,i+1);
/* The CRC32C code is taken from draft-ietf-tsvwg-sctpcsum-01.txt.
* That code is copyrighted by D. Otis and has been modified.
+ *
+ * Polynomial is
+ *
+ * x^32 + x^28 + x^27 + x^26 + x^25 + x^23 + x^22 + x^20 + x^19 +
+ * x^18 + x^14 + x^13 + x^11 + x^10 + x^9 + x^8 + x^6 + 1
+ *
+ * Note that this is not the AUTODIN/HDLC/802.x CRC - it uses a different
+ * polynomial.
*/
#define CRC32C(c,d) (c=(c>>8)^crc_c[(c^(d))&0xFF])
return ( crc32 );
}
-static guint
-nr_of_padding_bytes (guint length)
-{
- guint remainder;
-
- remainder = length % 4;
-
- if (remainder == 0)
- return 0;
- else
- return 4 - remainder;
-}
-
/*
- * TLV parameter stuff for INIT and INIT-ACK chunks
+ * Routines for dissecting parameters
*/
static void
-dissect_parameter(tvbuff_t *, packet_info *, proto_tree *);
+dissect_parameter(tvbuff_t *, packet_info *, proto_tree *, proto_item *, gboolean);
static void
-dissect_error_cause(tvbuff_t *, packet_info *, proto_tree *);
+dissect_parameters(tvbuff_t *, packet_info *, proto_tree *, proto_item *, gboolean);
-static gboolean
-dissect_sctp_chunk(tvbuff_t *, packet_info *, proto_tree *, proto_tree *);
+static void
+dissect_error_cause(tvbuff_t *, packet_info *, proto_tree *);
static void
-dissect_tlv_parameter_list(tvbuff_t *parameter_list_tvb, packet_info *pinfo, proto_tree *tree)
-{
- guint offset, length, padding_length, total_length;
- tvbuff_t *parameter_tvb;
+dissect_error_causes(tvbuff_t *, packet_info *, proto_tree *);
- offset = 0;
- while(tvb_reported_length_remaining(parameter_list_tvb, offset)) {
- length = tvb_get_ntohs(parameter_list_tvb, offset + PARAMETER_LENGTH_OFFSET);
- padding_length = nr_of_padding_bytes(length);
- total_length = length + padding_length;
- /* create a tvb for the chunk including the padding bytes */
- parameter_tvb = tvb_new_subset(parameter_list_tvb, offset, total_length, total_length);
- dissect_parameter(parameter_tvb, pinfo, tree);
- /* get rid of the handled parameter */
- offset += total_length;
- }
-}
+static gboolean
+dissect_sctp_chunk(tvbuff_t *, packet_info *, proto_tree *, proto_tree *, gboolean);
static void
-dissect_heartbeat_info_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
-{
- guint16 length, heartbeat_info_length;
+dissect_sctp_packet(tvbuff_t *, packet_info *, proto_tree *, gboolean);
- length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET);
- heartbeat_info_length = length - HEARTBEAT_INFO_PARAMETER_HEADER_LENGTH;
- proto_tree_add_text(parameter_tree, parameter_tvb, HEARTBEAT_INFO_PARAMETER_INFO_OFFSET, heartbeat_info_length,
- "Heartbeat info (%u byte%s)",
- heartbeat_info_length, plurality(heartbeat_info_length, "", "s"));
+#define HEARTBEAT_INFO_PARAMETER_INFO_OFFSET PARAMETER_VALUE_OFFSET
- proto_item_set_text(parameter_item, "Heartbeat info parameter with %u byte%s of info",
- heartbeat_info_length, plurality(heartbeat_info_length, "", "s"));
+static void
+dissect_heartbeat_info_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
+{
+ guint16 heartbeat_info_length;
+
+ heartbeat_info_length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH;
+ if (heartbeat_info_length > 0)
+ proto_tree_add_item(parameter_tree, hf_heartbeat_info, parameter_tvb, HEARTBEAT_INFO_PARAMETER_INFO_OFFSET, heartbeat_info_length, NETWORK_BYTE_ORDER);
+ proto_item_append_text(parameter_item, " (Information: %u byte%s)", heartbeat_info_length, plurality(heartbeat_info_length, "", "s"));
}
+#define IPV4_ADDRESS_LENGTH 4
+#define IPV4_ADDRESS_OFFSET PARAMETER_VALUE_OFFSET
+
static void
-dissect_ipv4_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
+dissect_ipv4_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item, proto_item *additional_item, gboolean dissecting_init_init_ack_chunk)
{
- guint32 ipv4_address;
-
- tvb_memcpy(parameter_tvb, (guint8 *)&ipv4_address, PARAMETER_VALUE_OFFSET, IPV4_ADDRESS_LENGTH);
- proto_tree_add_ipv4(parameter_tree, hf_sctp_parameter_ipv4_address,
- parameter_tvb, PARAMETER_VALUE_OFFSET, IPV4_ADDRESS_LENGTH,
- ipv4_address);
- proto_item_set_text(parameter_item, "IPV4 address parameter");
+ proto_tree_add_item(parameter_tree, hf_ipv4_address, parameter_tvb, IPV4_ADDRESS_OFFSET, IPV4_ADDRESS_LENGTH, NETWORK_BYTE_ORDER);
+ proto_item_append_text(parameter_item, " (Address: %s)", ip_to_str((const guint8 *)tvb_get_ptr(parameter_tvb, IPV4_ADDRESS_OFFSET, IPV4_ADDRESS_LENGTH)));
+ if (additional_item)
+ proto_item_append_text(additional_item, "%s", ip_to_str((const guint8 *)tvb_get_ptr(parameter_tvb, IPV4_ADDRESS_OFFSET, IPV4_ADDRESS_LENGTH)));
+ if (dissecting_init_init_ack_chunk) {
+ if (sctp_info.number_of_tvbs < MAXIMUM_NUMBER_OF_TVBS)
+ sctp_info.tvb[sctp_info.number_of_tvbs++] = parameter_tvb;
+ else
+ sctp_info.incomplete = TRUE;
+ }
}
+#define IPV6_ADDRESS_LENGTH 16
+#define IPV6_ADDRESS_OFFSET PARAMETER_VALUE_OFFSET
+
static void
-dissect_ipv6_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
+dissect_ipv6_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item, proto_item *additional_item, gboolean dissecting_init_init_ack_chunk)
{
- proto_tree_add_ipv6(parameter_tree, hf_sctp_parameter_ipv6_address,
- parameter_tvb, PARAMETER_VALUE_OFFSET, IPV6_ADDRESS_LENGTH,
- tvb_get_ptr(parameter_tvb, PARAMETER_VALUE_OFFSET, IPV6_ADDRESS_LENGTH));
-
- proto_item_set_text(parameter_item, "IPV6 address parameter");
+ proto_tree_add_item(parameter_tree, hf_ipv6_address, parameter_tvb, IPV6_ADDRESS_OFFSET, IPV6_ADDRESS_LENGTH, NETWORK_BYTE_ORDER);
+ proto_item_append_text(parameter_item, " (Address: %s)", ip6_to_str((const struct e_in6_addr *)tvb_get_ptr(parameter_tvb, IPV6_ADDRESS_OFFSET, IPV6_ADDRESS_LENGTH)));
+ if (additional_item)
+ proto_item_append_text(additional_item, "%s", ip6_to_str((const struct e_in6_addr *)tvb_get_ptr(parameter_tvb, IPV6_ADDRESS_OFFSET, IPV6_ADDRESS_LENGTH)));
+ if (dissecting_init_init_ack_chunk) {
+ if (sctp_info.number_of_tvbs < MAXIMUM_NUMBER_OF_TVBS)
+ sctp_info.tvb[sctp_info.number_of_tvbs++] = parameter_tvb;
+ else
+ sctp_info.incomplete = TRUE;
+ }
}
+#define STATE_COOKIE_PARAMETER_COOKIE_OFFSET PARAMETER_VALUE_OFFSET
+
static void
dissect_state_cookie_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
{
- guint16 length, state_cookie_length;
-
- length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET);
+ guint16 state_cookie_length;
- state_cookie_length = length - STATE_COOKIE_PARAMETER_HEADER_LENGTH;
-
- proto_tree_add_text(parameter_tree, parameter_tvb, STATE_COOKIE_PARAMETER_COOKIE_OFFSET, state_cookie_length,
- "State cookie (%u byte%s)",
- state_cookie_length, plurality(state_cookie_length, "", "s"));
-
- proto_item_set_text(parameter_item, "State Cookie Parameter with %u byte%s cookie",
- state_cookie_length, plurality(state_cookie_length, "", "s"));
+ state_cookie_length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH;
+ if (state_cookie_length > 0)
+ proto_tree_add_item(parameter_tree, hf_state_cookie, parameter_tvb, STATE_COOKIE_PARAMETER_COOKIE_OFFSET, state_cookie_length, NETWORK_BYTE_ORDER);
+ proto_item_append_text(parameter_item, " (Cookie length: %u byte%s)", state_cookie_length, plurality(state_cookie_length, "", "s"));
}
static void
-dissect_unrecognized_parameters_parameter(tvbuff_t *parameter_tvb, packet_info *pinfo, proto_tree *parameter_tree, proto_item *parameter_item)
+dissect_unrecognized_parameters_parameter(tvbuff_t *parameter_tvb, packet_info *pinfo, proto_tree *parameter_tree)
{
- guint16 length, padding_length, parameter_value_length, unrecognized_parameter_type;
- tvbuff_t *unrecognized_parameters_tvb;
-
- length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET);
- padding_length = nr_of_padding_bytes(length);
-
- parameter_value_length = length - PARAMETER_HEADER_LENGTH + padding_length;
-
- unrecognized_parameters_tvb = tvb_new_subset(parameter_tvb, PARAMETER_VALUE_OFFSET,
- parameter_value_length, parameter_value_length);
- unrecognized_parameter_type = tvb_get_ntohs(unrecognized_parameters_tvb, PARAMETER_TYPE_OFFSET);
- dissect_tlv_parameter_list(unrecognized_parameters_tvb, pinfo, parameter_tree);
-
- proto_item_set_text(parameter_item, "Unrecognized parameter of type %s (0x%x)",
- val_to_str(unrecognized_parameter_type, sctp_parameter_identifier_values, "unknown"), unrecognized_parameter_type);
+ /* FIXME: Does it contain one or more parameters? */
+ dissect_parameter(tvb_new_subset(parameter_tvb, PARAMETER_VALUE_OFFSET, -1, -1), pinfo, parameter_tree, NULL, FALSE);
}
+#define COOKIE_PRESERVATIVE_PARAMETER_INCR_LENGTH 4
+#define COOKIE_PRESERVATIVE_PARAMETER_INCR_OFFSET PARAMETER_VALUE_OFFSET
+
static void
dissect_cookie_preservative_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
{
- guint32 increment;
-
- increment = tvb_get_ntohl(parameter_tvb, COOKIE_PRESERVATIVE_PARAMETER_INCR_OFFSET);
-
- proto_tree_add_uint(parameter_tree, hf_sctp_parameter_cookie_preservative_increment, parameter_tvb,
- COOKIE_PRESERVATIVE_PARAMETER_INCR_OFFSET,
- COOKIE_PRESERVATIVE_PARAMETER_INCR_LENGTH,
- increment);
-
- proto_item_set_text(parameter_item, "Cookie preservative parameter requesting for a %u msec increment",
- increment);
+ proto_tree_add_item(parameter_tree, hf_cookie_preservative_increment, parameter_tvb, COOKIE_PRESERVATIVE_PARAMETER_INCR_OFFSET, COOKIE_PRESERVATIVE_PARAMETER_INCR_LENGTH, NETWORK_BYTE_ORDER);
+ proto_item_append_text(parameter_item, " (Increment :%u msec)", tvb_get_ntohl(parameter_tvb, COOKIE_PRESERVATIVE_PARAMETER_INCR_OFFSET));
}
+#define HOSTNAME_OFFSET PARAMETER_VALUE_OFFSET
+
static void
dissect_hostname_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
{
- guint16 length, hostname_length;
- const char *hostname;
-
- length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET);
+ guint16 hostname_length;
- hostname_length = length - PARAMETER_HEADER_LENGTH;
- hostname = (const char *)tvb_get_ptr(parameter_tvb, PARAMETER_VALUE_OFFSET, hostname_length);
- proto_tree_add_string(parameter_tree, hf_sctp_parameter_hostname_hostname, parameter_tvb,
- PARAMETER_VALUE_OFFSET, hostname_length,
- hostname);
+ hostname_length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH;
+ proto_tree_add_item(parameter_tree, hf_hostname, parameter_tvb, HOSTNAME_OFFSET, hostname_length, NETWORK_BYTE_ORDER);
+ proto_item_append_text(parameter_item, " (Hostname: %.*s)", hostname_length, (const char *)tvb_get_ptr(parameter_tvb, HOSTNAME_OFFSET, hostname_length));
- proto_item_set_text(parameter_item, "Hostname parameter");
}
+#define IPv4_ADDRESS_TYPE 5
+#define IPv6_ADDRESS_TYPE 6
+#define HOSTNAME_ADDRESS_TYPE 11
+
+static const value_string address_types_values[] = {
+ { IPv4_ADDRESS_TYPE, "IPv4 address" },
+ { IPv6_ADDRESS_TYPE, "IPv6 address" },
+ { HOSTNAME_ADDRESS_TYPE, "Hostname address" },
+ { 0, NULL }
+};
+
+#define SUPPORTED_ADDRESS_TYPE_PARAMETER_ADDRESS_TYPE_LENGTH 2
+
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 ;
+ guint16 address_type, number_of_address_types, address_type_number;
guint offset;
- proto_item *address_list_item;
- proto_tree *address_list_tree;
-
- length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET);
- list_of_address_types_length = length - PARAMETER_HEADER_LENGTH;
- number_of_address_types = list_of_address_types_length / SUPPORTED_ADDRESS_TYPE_PARAMETER_ADDRESS_TYPE_LENGTH;
- address_list_item = proto_tree_add_text(parameter_tree, parameter_tvb, PARAMETER_VALUE_OFFSET, list_of_address_types_length,
- "Supported Address Types (%u address type%s)",
- number_of_address_types, plurality(number_of_address_types, "", "s"));
- address_list_tree = proto_item_add_subtree(address_list_item, ett_sctp_supported_address_types_parameter);
+ number_of_address_types = (tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH)
+ / SUPPORTED_ADDRESS_TYPE_PARAMETER_ADDRESS_TYPE_LENGTH;
offset = PARAMETER_VALUE_OFFSET;
+ proto_item_append_text(parameter_item, " (Supported types: ");
for(address_type_number = 1; address_type_number <= number_of_address_types; address_type_number++) {
+ proto_tree_add_item(parameter_tree, hf_supported_address_type, parameter_tvb, offset, SUPPORTED_ADDRESS_TYPE_PARAMETER_ADDRESS_TYPE_LENGTH, NETWORK_BYTE_ORDER);
address_type = tvb_get_ntohs(parameter_tvb, offset);
- proto_tree_add_uint_format(address_list_tree, hf_sctp_supported_address_types_parameter,
- parameter_tvb, offset, SUPPORTED_ADDRESS_TYPE_PARAMETER_ADDRESS_TYPE_LENGTH,
- address_type, "Supported address type: 0x%04x (%s)",
- address_type, val_to_str(address_type, sctp_parameter_identifier_values, "unknown"));
+ switch (address_type) {
+ case IPv4_ADDRESS_TYPE:
+ proto_item_append_text(parameter_item, "IPv4");
+ break;
+ case IPv6_ADDRESS_TYPE:
+ proto_item_append_text(parameter_item, "IPv6");
+ break;
+ case HOSTNAME_ADDRESS_TYPE:
+ proto_item_append_text(parameter_item, "hostname");
+ break;
+ default:
+ proto_item_append_text(parameter_item, "%u", address_type);
+ }
+ if (address_type_number < number_of_address_types)
+ proto_item_append_text(parameter_item, ", ");
offset += SUPPORTED_ADDRESS_TYPE_PARAMETER_ADDRESS_TYPE_LENGTH;
};
-
- proto_item_set_text(parameter_item, "Supported address types parameter reporting %u address type%s",
- number_of_address_types, plurality(number_of_address_types, "", "s"));
+ proto_item_append_text(parameter_item, ")");
}
static void
-dissect_ecn_parameter(proto_item *parameter_item)
+dissect_ecn_parameter(tvbuff_t *parameter_tvb _U_)
{
- proto_item_set_text(parameter_item, "ECN parameter");
}
static void
-dissect_forward_tsn_supported_parameter(proto_item *parameter_item)
+dissect_forward_tsn_supported_parameter(tvbuff_t *parameter_tvb _U_)
{
- proto_item_set_text(parameter_item, "Forward TSN supported parameter");
}
#define CORRELATION_ID_LENGTH 4
static void
dissect_add_ip_address_parameter(tvbuff_t *parameter_tvb, packet_info *pinfo, proto_tree *parameter_tree, proto_item *parameter_item)
{
- guint32 correlation_id;
- guint16 length, parameter_value_length;
+ guint16 address_length;
tvbuff_t *address_tvb;
- length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET);
- parameter_value_length = length - PARAMETER_HEADER_LENGTH - CORRELATION_ID_LENGTH;
- correlation_id = tvb_get_ntohs(parameter_tvb, CORRELATION_ID_OFFSET);
- proto_tree_add_uint(parameter_tree, hf_sctp_correlation_id, parameter_tvb, CORRELATION_ID_OFFSET, CORRELATION_ID_LENGTH, correlation_id);
- address_tvb = tvb_new_subset(parameter_tvb, ADDRESS_PARAMETER_OFFSET, parameter_value_length, parameter_value_length);
- dissect_parameter(address_tvb, pinfo, parameter_tree);
-
- proto_item_set_text(parameter_item, "Add IP address parameter");
+ address_length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH - CORRELATION_ID_LENGTH;
+
+ proto_tree_add_item(parameter_tree, hf_correlation_id, parameter_tvb, CORRELATION_ID_OFFSET, CORRELATION_ID_LENGTH, NETWORK_BYTE_ORDER);
+ address_tvb = tvb_new_subset(parameter_tvb, ADDRESS_PARAMETER_OFFSET, address_length, address_length);
+ proto_item_append_text(parameter_item, " (Address: ");
+ dissect_parameter(address_tvb, pinfo, parameter_tree, parameter_item, FALSE);
+ proto_item_append_text(parameter_item, ", correlation ID: %u)", tvb_get_ntohl(parameter_tvb, CORRELATION_ID_OFFSET));
}
static void
dissect_del_ip_address_parameter(tvbuff_t *parameter_tvb, packet_info *pinfo, proto_tree *parameter_tree, proto_item *parameter_item)
{
- guint32 correlation_id;
- guint16 length, parameter_value_length;
+ guint16 address_length;
tvbuff_t *address_tvb;
- length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET);
- parameter_value_length = length - PARAMETER_HEADER_LENGTH - CORRELATION_ID_LENGTH;
- correlation_id = tvb_get_ntohs(parameter_tvb, CORRELATION_ID_OFFSET);
- proto_tree_add_uint(parameter_tree, hf_sctp_correlation_id, parameter_tvb, CORRELATION_ID_OFFSET, CORRELATION_ID_LENGTH, correlation_id);
- address_tvb = tvb_new_subset(parameter_tvb, ADDRESS_PARAMETER_OFFSET, parameter_value_length, parameter_value_length);
- dissect_parameter(address_tvb, pinfo, parameter_tree);
-
- proto_item_set_text(parameter_item, "Delete IP address parameter");
+ address_length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH - CORRELATION_ID_LENGTH;
+
+ proto_tree_add_item(parameter_tree, hf_correlation_id, parameter_tvb, CORRELATION_ID_OFFSET, CORRELATION_ID_LENGTH, NETWORK_BYTE_ORDER);
+ address_tvb = tvb_new_subset(parameter_tvb, ADDRESS_PARAMETER_OFFSET, address_length, address_length);
+ proto_item_append_text(parameter_item, " (Address: ");
+ dissect_parameter(address_tvb, pinfo, parameter_tree, parameter_item, FALSE);
+ proto_item_append_text(parameter_item, ", correlation ID: %u)", tvb_get_ntohl(parameter_tvb, CORRELATION_ID_OFFSET));
}
+#define ERROR_CAUSE_IND_CASUES_OFFSET (CORRELATION_ID_OFFSET + CORRELATION_ID_LENGTH)
+
static void
-dissect_error_cause_indication_parameter(tvbuff_t *parameter_tvb, packet_info *pinfo, proto_tree *parameter_tree, proto_item *parameter_item)
+dissect_error_cause_indication_parameter(tvbuff_t *parameter_tvb, packet_info *pinfo, proto_tree *parameter_tree)
{
- guint32 correlation_id;
- guint16 length, padding_length, total_length;
- gint offset;
- tvbuff_t *error_cause_tvb;
-
- correlation_id = tvb_get_ntohs(parameter_tvb, CORRELATION_ID_OFFSET);
- proto_tree_add_uint(parameter_tree, hf_sctp_correlation_id, parameter_tvb, CORRELATION_ID_OFFSET, CORRELATION_ID_LENGTH, correlation_id);
+ guint16 causes_length;
+ tvbuff_t *causes_tvb;
- offset = PARAMETER_VALUE_OFFSET + CORRELATION_ID_LENGTH;
- while(tvb_reported_length_remaining(parameter_tvb, offset)) {
- length = tvb_get_ntohs(parameter_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 */
- error_cause_tvb = tvb_new_subset(parameter_tvb, offset , total_length, total_length);
- dissect_error_cause(error_cause_tvb, pinfo, parameter_tree);
- /* get rid of the handled parameter */
- offset += total_length;
- }
- proto_item_set_text(parameter_item, "Error cause indication");
+ proto_tree_add_item(parameter_tree, hf_correlation_id, parameter_tvb, CORRELATION_ID_OFFSET, CORRELATION_ID_LENGTH, NETWORK_BYTE_ORDER);
+ causes_length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH - CORRELATION_ID_LENGTH;
+ causes_tvb = tvb_new_subset(parameter_tvb, ERROR_CAUSE_IND_CASUES_OFFSET, causes_length, causes_length);
+ dissect_error_causes(causes_tvb, pinfo, parameter_tree);
}
static void
dissect_set_primary_address_parameter(tvbuff_t *parameter_tvb, packet_info *pinfo, proto_tree *parameter_tree, proto_item *parameter_item)
{
- guint32 correlation_id;
- guint16 length, parameter_value_length;
+ guint16 address_length;
tvbuff_t *address_tvb;
- length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET);
- parameter_value_length = length - PARAMETER_HEADER_LENGTH - CORRELATION_ID_LENGTH;
-
- correlation_id = tvb_get_ntohs(parameter_tvb, CORRELATION_ID_OFFSET);
- proto_tree_add_uint(parameter_tree, hf_sctp_correlation_id, parameter_tvb, CORRELATION_ID_OFFSET, CORRELATION_ID_LENGTH, correlation_id);
- address_tvb = tvb_new_subset(parameter_tvb, ADDRESS_PARAMETER_OFFSET, parameter_value_length, parameter_value_length);
- dissect_parameter(address_tvb, pinfo, parameter_tree);
-
- proto_item_set_text(parameter_item, "Set primary address parameter");
+ address_length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH - CORRELATION_ID_LENGTH;
+
+ proto_tree_add_item(parameter_tree, hf_correlation_id, parameter_tvb, CORRELATION_ID_OFFSET, CORRELATION_ID_LENGTH, NETWORK_BYTE_ORDER);
+ address_tvb = tvb_new_subset(parameter_tvb, ADDRESS_PARAMETER_OFFSET, address_length, address_length);
+ proto_item_append_text(parameter_item, " (Address: ");
+ dissect_parameter(address_tvb, pinfo, parameter_tree, parameter_item, FALSE);
+ proto_item_append_text(parameter_item, ", correlation ID: %u)", tvb_get_ntohl(parameter_tvb, CORRELATION_ID_OFFSET));
}
static void
dissect_success_report_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
{
- guint32 correlation_id;
-
- correlation_id = tvb_get_ntohs(parameter_tvb, CORRELATION_ID_OFFSET);
- proto_tree_add_uint(parameter_tree, hf_sctp_correlation_id, parameter_tvb, CORRELATION_ID_OFFSET, CORRELATION_ID_LENGTH, correlation_id);
-
- proto_item_set_text(parameter_item, "Success report parameter");
+ proto_tree_add_item(parameter_tree, hf_correlation_id, parameter_tvb, CORRELATION_ID_OFFSET, CORRELATION_ID_LENGTH, NETWORK_BYTE_ORDER);
+ proto_item_append_text(parameter_item, " (Correlation ID: %u)", tvb_get_ntohl(parameter_tvb, CORRELATION_ID_OFFSET));
}
#define ADAP_INDICATION_LENGTH 4
static void
dissect_adap_indication_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
{
- guint32 indication;
-
- indication = tvb_get_ntohl(parameter_tvb, ADAP_INDICATION_OFFSET);
- proto_tree_add_uint(parameter_tree, hf_sctp_adap_indication, parameter_tvb, ADAP_INDICATION_OFFSET, ADAP_INDICATION_LENGTH, indication);
- proto_item_set_text(parameter_item, "Adaptation layer indication");
+ proto_tree_add_item(parameter_tree, hf_adap_indication, parameter_tvb, ADAP_INDICATION_OFFSET, ADAP_INDICATION_LENGTH, NETWORK_BYTE_ORDER);
+ proto_item_append_text(parameter_item, " (Indication: %u)", tvb_get_ntohl(parameter_tvb, ADAP_INDICATION_OFFSET));
}
static void
dissect_unknown_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
{
- guint16 type, length, parameter_value_length;
+ guint16 type, parameter_value_length;
- type = tvb_get_ntohs(parameter_tvb, PARAMETER_TYPE_OFFSET);
- length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET);
+ type = tvb_get_ntohs(parameter_tvb, PARAMETER_TYPE_OFFSET);
+ parameter_value_length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH;
- parameter_value_length = length - PARAMETER_HEADER_LENGTH;
+ if (parameter_value_length > 0)
+ proto_tree_add_item(parameter_tree, hf_parameter_value, parameter_tvb, PARAMETER_VALUE_OFFSET, parameter_value_length, NETWORK_BYTE_ORDER);
- 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 of type %u and %u byte%s value",
- type, parameter_value_length, plurality(parameter_value_length, "", "s"));
+ proto_item_append_text(parameter_item, " (Type %u, value length: %u byte%s)", type, parameter_value_length, plurality(parameter_value_length, "", "s"));
}
+#define HEARTBEAT_INFO_PARAMETER_ID 0x0001
+#define IPV4ADDRESS_PARAMETER_ID 0x0005
+#define IPV6ADDRESS_PARAMETER_ID 0x0006
+#define STATE_COOKIE_PARAMETER_ID 0x0007
+#define UNREC_PARA_PARAMETER_ID 0x0008
+#define COOKIE_PRESERVATIVE_PARAMETER_ID 0x0009
+#define HOSTNAME_ADDRESS_PARAMETER_ID 0x000b
+#define SUPPORTED_ADDRESS_TYPES_PARAMETER_ID 0x000c
+#define ECN_PARAMETER_ID 0x8000
+#define FORWARD_TSN_SUPPORTED_PARAMETER_ID 0xC000
+#define ADD_IP_ADDRESS_PARAMETER_ID 0xC001
+#define DEL_IP_ADDRESS_PARAMETER_ID 0xC002
+#define ERROR_CAUSE_INDICATION_PARAMETER_ID 0xC003
+#define SET_PRIMARY_ADDRESS_PARAMETER_ID 0xC004
+#define SUCCESS_REPORT_PARAMETER_ID 0xC005
+#define ADAP_LAYER_INDICATION_PARAMETER_ID 0xC006
+
+static const value_string parameter_identifier_values[] = {
+ { HEARTBEAT_INFO_PARAMETER_ID, "Heartbeat info" },
+ { IPV4ADDRESS_PARAMETER_ID, "IPv4 address" },
+ { IPV6ADDRESS_PARAMETER_ID, "IPv6 address" },
+ { STATE_COOKIE_PARAMETER_ID, "State cookie" },
+ { UNREC_PARA_PARAMETER_ID, "Unrecognized parameter" },
+ { COOKIE_PRESERVATIVE_PARAMETER_ID, "Cookie preservative" },
+ { HOSTNAME_ADDRESS_PARAMETER_ID, "Hostname address" },
+ { SUPPORTED_ADDRESS_TYPES_PARAMETER_ID, "Supported address types" },
+ { ECN_PARAMETER_ID, "ECN" },
+ { FORWARD_TSN_SUPPORTED_PARAMETER_ID, "Forward TSN supported" },
+ { ADD_IP_ADDRESS_PARAMETER_ID, "Add IP address" },
+ { DEL_IP_ADDRESS_PARAMETER_ID, "Delete IP address" },
+ { ERROR_CAUSE_INDICATION_PARAMETER_ID, "Error cause indication" },
+ { SET_PRIMARY_ADDRESS_PARAMETER_ID, "Set primary address" },
+ { SUCCESS_REPORT_PARAMETER_ID, "Success report" },
+ { ADAP_LAYER_INDICATION_PARAMETER_ID, "Adaptation Layer Indication" },
+ { 0, NULL } };
+
+#define SCTP_PARAMETER_BIT_1 0x8000
+#define SCTP_PARAMETER_BIT_2 0x4000
+
+static const true_false_string sctp_parameter_bit_1_value = {
+ "Skip parameter and continue processing of the chunk",
+ "Stop processing of chunk"
+};
+
+static const true_false_string sctp_parameter_bit_2_value = {
+ "Do report",
+ "Do not report"
+};
+
static void
-dissect_parameter(tvbuff_t *parameter_tvb, packet_info *pinfo, proto_tree *chunk_tree)
+dissect_parameter(tvbuff_t *parameter_tvb, packet_info *pinfo, proto_tree *chunk_tree, proto_item *additional_item, gboolean dissecting_init_init_ack_chunk)
{
- guint16 type, length, padding_length, total_length;
+ guint16 type, length, padding_length;
proto_item *parameter_item;
proto_tree *parameter_tree;
+ proto_item *type_item;
+ proto_tree *type_tree;
type = tvb_get_ntohs(parameter_tvb, PARAMETER_TYPE_OFFSET);
length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET);
- padding_length = nr_of_padding_bytes(length);
- total_length = length + padding_length;
+ padding_length = tvb_length(parameter_tvb) - length;
- parameter_item = proto_tree_add_text(chunk_tree, parameter_tvb,
- PARAMETER_HEADER_OFFSET, total_length, "%s parameter",
- val_to_str(type, sctp_parameter_identifier_values, "Unknown"));
+ parameter_item = proto_tree_add_text(chunk_tree, parameter_tvb, PARAMETER_HEADER_OFFSET, tvb_length(parameter_tvb), "%s parameter", val_to_str(type, parameter_identifier_values, "Unknown"));
parameter_tree = proto_item_add_subtree(parameter_item, ett_sctp_chunk_parameter);
- proto_tree_add_uint(parameter_tree, hf_sctp_chunk_parameter_type,
- parameter_tvb, PARAMETER_TYPE_OFFSET, PARAMETER_TYPE_LENGTH,
- type);
- proto_tree_add_uint(parameter_tree, hf_sctp_chunk_parameter_length,
- parameter_tvb, PARAMETER_LENGTH_OFFSET, PARAMETER_LENGTH_LENGTH,
- length);
+ type_item = proto_tree_add_item(parameter_tree, hf_parameter_type, parameter_tvb, PARAMETER_TYPE_OFFSET, PARAMETER_TYPE_LENGTH, NETWORK_BYTE_ORDER);
+ type_tree = proto_item_add_subtree(type_item, ett_sctp_parameter_type);
+ proto_tree_add_item(type_tree, hf_parameter_bit_1, parameter_tvb, PARAMETER_TYPE_OFFSET, PARAMETER_TYPE_LENGTH, NETWORK_BYTE_ORDER);
+ proto_tree_add_item(type_tree, hf_parameter_bit_2, parameter_tvb, PARAMETER_TYPE_OFFSET, PARAMETER_TYPE_LENGTH, NETWORK_BYTE_ORDER);
+ proto_tree_add_item(parameter_tree, hf_parameter_length, parameter_tvb, PARAMETER_LENGTH_OFFSET, PARAMETER_LENGTH_LENGTH, NETWORK_BYTE_ORDER);
switch(type) {
case HEARTBEAT_INFO_PARAMETER_ID:
dissect_heartbeat_info_parameter(parameter_tvb, parameter_tree, parameter_item);
break;
case IPV4ADDRESS_PARAMETER_ID:
- dissect_ipv4_parameter(parameter_tvb, parameter_tree, parameter_item);
+ dissect_ipv4_parameter(parameter_tvb, parameter_tree, parameter_item, additional_item, dissecting_init_init_ack_chunk);
break;
case IPV6ADDRESS_PARAMETER_ID:
- dissect_ipv6_parameter(parameter_tvb, parameter_tree, parameter_item);
+ dissect_ipv6_parameter(parameter_tvb, parameter_tree, parameter_item, additional_item, dissecting_init_init_ack_chunk);
break;
case STATE_COOKIE_PARAMETER_ID:
dissect_state_cookie_parameter(parameter_tvb, parameter_tree, parameter_item);
break;
case UNREC_PARA_PARAMETER_ID:
- dissect_unrecognized_parameters_parameter(parameter_tvb, pinfo, parameter_tree, parameter_item);
+ dissect_unrecognized_parameters_parameter(parameter_tvb, pinfo, parameter_tree);
break;
case COOKIE_PRESERVATIVE_PARAMETER_ID:
dissect_cookie_preservative_parameter(parameter_tvb, parameter_tree, parameter_item);
dissect_supported_address_types_parameter(parameter_tvb, parameter_tree, parameter_item);
break;
case ECN_PARAMETER_ID:
- dissect_ecn_parameter(parameter_item);
+ dissect_ecn_parameter(parameter_tvb);
break;
case FORWARD_TSN_SUPPORTED_PARAMETER_ID:
- dissect_forward_tsn_supported_parameter(parameter_item);
+ dissect_forward_tsn_supported_parameter(parameter_tvb);
break;
case ADD_IP_ADDRESS_PARAMETER_ID:
dissect_add_ip_address_parameter(parameter_tvb, pinfo, parameter_tree, parameter_item);
dissect_del_ip_address_parameter(parameter_tvb, pinfo, parameter_tree, parameter_item);
break;
case ERROR_CAUSE_INDICATION_PARAMETER_ID:
- dissect_error_cause_indication_parameter(parameter_tvb, pinfo, parameter_tree, parameter_item);
+ dissect_error_cause_indication_parameter(parameter_tvb, pinfo, parameter_tree);
break;
case SET_PRIMARY_ADDRESS_PARAMETER_ID:
dissect_set_primary_address_parameter(parameter_tvb, pinfo, parameter_tree, parameter_item);
default:
dissect_unknown_parameter(parameter_tvb, parameter_tree, parameter_item);
break;
- };
- if ((padding_length > 0) && (type != UNREC_PARA_PARAMETER_ID))
- proto_tree_add_text(parameter_tree, parameter_tvb, PARAMETER_HEADER_OFFSET + length, padding_length,
- "Padding: %u byte%s",
- padding_length, plurality(padding_length, "", "s"));
+ }
+
+ if (padding_length > 0)
+ proto_tree_add_item(parameter_tree, hf_parameter_padding, parameter_tvb, PARAMETER_HEADER_OFFSET + length, padding_length, NETWORK_BYTE_ORDER);
+}
+
+static void
+dissect_parameters(tvbuff_t *parameters_tvb, packet_info *pinfo, proto_tree *tree, proto_item *additional_item, gboolean dissecting_init_init_ack_chunk)
+{
+ gint offset, length, total_length, remaining_length;
+ tvbuff_t *parameter_tvb;
+
+ offset = 0;
+ while((remaining_length = tvb_length_remaining(parameters_tvb, offset))) {
+ if ((offset > 0) && additional_item)
+ proto_item_append_text(additional_item, " ");
+ length = tvb_get_ntohs(parameters_tvb, offset + PARAMETER_LENGTH_OFFSET);
+ total_length = ADD_PADDING(length);
+ if (remaining_length >= length)
+ total_length = MIN(total_length, remaining_length);
+ /* create a tvb for the parameter including the padding bytes */
+ parameter_tvb = tvb_new_subset(parameters_tvb, offset, total_length, total_length);
+ dissect_parameter(parameter_tvb, pinfo, tree, additional_item, dissecting_init_init_ack_chunk);
+ /* get rid of the handled parameter */
+ offset += total_length;
+ }
}
+
/*
* Code to handle error causes for ABORT and ERROR chunks
*/
+
+
+#define CAUSE_CODE_LENGTH 2
+#define CAUSE_LENGTH_LENGTH 2
+#define CAUSE_HEADER_LENGTH (CAUSE_CODE_LENGTH + CAUSE_LENGTH_LENGTH)
+
+#define CAUSE_HEADER_OFFSET 0
+#define CAUSE_CODE_OFFSET CAUSE_HEADER_OFFSET
+#define CAUSE_LENGTH_OFFSET (CAUSE_CODE_OFFSET + CAUSE_CODE_LENGTH)
+#define CAUSE_INFO_OFFSET (CAUSE_LENGTH_OFFSET + CAUSE_LENGTH_LENGTH)
+
+
+#define CAUSE_STREAM_IDENTIFIER_LENGTH 2
+#define CAUSE_RESERVED_LENGTH 2
+#define CAUSE_STREAM_IDENTIFIER_OFFSET CAUSE_INFO_OFFSET
+#define CAUSE_RESERVED_OFFSET (CAUSE_STREAM_IDENTIFIER_OFFSET + CAUSE_STREAM_IDENTIFIER_LENGTH)
+
static void
dissect_invalid_stream_identifier_cause(tvbuff_t *cause_tvb, proto_tree *cause_tree, proto_item *cause_item)
{
- guint16 stream_identifier;
+ proto_tree_add_item(cause_tree, hf_cause_stream_identifier, cause_tvb, CAUSE_STREAM_IDENTIFIER_OFFSET, CAUSE_STREAM_IDENTIFIER_LENGTH, NETWORK_BYTE_ORDER);
+ proto_tree_add_item(cause_tree, hf_cause_reserved, cause_tvb, CAUSE_RESERVED_OFFSET, CAUSE_RESERVED_LENGTH, NETWORK_BYTE_ORDER);
+ proto_item_append_text(cause_item, " (SID: %u)", tvb_get_ntohs(cause_tvb, CAUSE_STREAM_IDENTIFIER_OFFSET));
+}
- stream_identifier = tvb_get_ntohs(cause_tvb, CAUSE_STREAM_IDENTIFIER_OFFSET);
- proto_tree_add_uint(cause_tree, hf_sctp_cause_stream_identifier,
- cause_tvb, CAUSE_STREAM_IDENTIFIER_OFFSET, CAUSE_STREAM_IDENTIFIER_LENGTH,
- stream_identifier);
- proto_tree_add_text(cause_tree, cause_tvb, CAUSE_RESERVED_OFFSET, CAUSE_RESERVED_LENGTH,
- "Reserved (2 bytes)");
+#define CAUSE_NUMBER_OF_MISSING_PARAMETERS_LENGTH 4
+#define CAUSE_MISSING_PARAMETER_TYPE_LENGTH 2
- proto_item_set_text(cause_item, "Error cause reporting invalid stream identifier %u",
- stream_identifier);
-}
+#define CAUSE_NUMBER_OF_MISSING_PARAMETERS_OFFSET CAUSE_INFO_OFFSET
+#define CAUSE_FIRST_MISSING_PARAMETER_TYPE_OFFSET (CAUSE_NUMBER_OF_MISSING_PARAMETERS_OFFSET + \
+ CAUSE_NUMBER_OF_MISSING_PARAMETERS_LENGTH )
static void
-dissect_missing_mandatory_parameters_cause(tvbuff_t *cause_tvb, proto_tree *cause_tree, proto_item *cause_item)
+dissect_missing_mandatory_parameters_cause(tvbuff_t *cause_tvb, proto_tree *cause_tree)
{
guint32 number_of_missing_parameters, missing_parameter_number;
- guint16 parameter_type;
guint offset;
number_of_missing_parameters = tvb_get_ntohl(cause_tvb, CAUSE_NUMBER_OF_MISSING_PARAMETERS_OFFSET);
- proto_tree_add_uint(cause_tree, hf_sctp_cause_number_of_missing_parameters,
- cause_tvb, CAUSE_NUMBER_OF_MISSING_PARAMETERS_OFFSET, CAUSE_NUMBER_OF_MISSING_PARAMETERS_LENGTH,
- number_of_missing_parameters);
+ proto_tree_add_item(cause_tree, hf_cause_number_of_missing_parameters, cause_tvb, CAUSE_NUMBER_OF_MISSING_PARAMETERS_OFFSET, CAUSE_NUMBER_OF_MISSING_PARAMETERS_LENGTH, NETWORK_BYTE_ORDER);
offset = CAUSE_FIRST_MISSING_PARAMETER_TYPE_OFFSET;
for(missing_parameter_number = 1; missing_parameter_number <= number_of_missing_parameters; missing_parameter_number++) {
- parameter_type = tvb_get_ntohs(cause_tvb, offset);
- proto_tree_add_uint(cause_tree, hf_sctp_cause_missing_parameter_type,
- cause_tvb, offset, CAUSE_MISSING_PARAMETER_TYPE_LENGTH,
- parameter_type);
+ proto_tree_add_item(cause_tree, hf_cause_missing_parameter_type, cause_tvb, offset, CAUSE_MISSING_PARAMETER_TYPE_LENGTH, NETWORK_BYTE_ORDER);
offset += CAUSE_MISSING_PARAMETER_TYPE_LENGTH;
- };
-
- proto_item_set_text(cause_item, "Error cause reporting %u missing mandatory parameter%s",
- number_of_missing_parameters, plurality(number_of_missing_parameters, "", "s") );
+ }
}
+#define CAUSE_MEASURE_OF_STALENESS_LENGTH 4
+#define CAUSE_MEASURE_OF_STALENESS_OFFSET CAUSE_INFO_OFFSET
+
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 = tvb_get_ntohl(cause_tvb, CAUSE_MEASURE_OF_STALENESS_OFFSET);
-
- proto_tree_add_uint(cause_tree, hf_sctp_cause_measure_of_staleness, cause_tvb,
- CAUSE_MEASURE_OF_STALENESS_OFFSET,
- CAUSE_MEASURE_OF_STALENESS_LENGTH,
- measure_of_staleness);
-
- proto_item_set_text(cause_item, "Error cause reporting a measure of staleness of %u usec",
- measure_of_staleness);
+ proto_tree_add_item(cause_tree, hf_cause_measure_of_staleness, cause_tvb, CAUSE_MEASURE_OF_STALENESS_OFFSET, CAUSE_MEASURE_OF_STALENESS_LENGTH, NETWORK_BYTE_ORDER);
+ proto_item_append_text(cause_item, " (Measure: %u usec)", tvb_get_ntohl(cause_tvb, CAUSE_MEASURE_OF_STALENESS_OFFSET));
}
static void
-dissect_out_of_resource_cause(proto_item *cause_item)
+dissect_out_of_resource_cause(tvbuff_t *cause_tvb _U_)
{
- proto_item_set_text(cause_item, "Error cause reporting lack of resources");
}
static void
dissect_unresolvable_address_cause(tvbuff_t *cause_tvb, packet_info *pinfo, proto_tree *cause_tree, proto_item *cause_item)
{
- guint16 code, length, parameter_length, parameter_type;
+ guint16 parameter_length;
tvbuff_t *parameter_tvb;
- code = tvb_get_ntohs(cause_tvb, CAUSE_CODE_OFFSET);
- length = tvb_get_ntohs(cause_tvb, CAUSE_LENGTH_OFFSET);
-
- parameter_length = length - CAUSE_HEADER_LENGTH;
- parameter_tvb = tvb_new_subset(cause_tvb, CAUSE_INFO_OFFSET,
- parameter_length, parameter_length);
-
- dissect_parameter(parameter_tvb, pinfo, cause_tree);
- parameter_type = tvb_get_ntohs(parameter_tvb, PARAMETER_TYPE_OFFSET);
-
- proto_item_set_text(cause_item, "Error cause reporting unresolvable address of type 0x%04x (%s)",
- parameter_type, val_to_str(parameter_type, sctp_parameter_identifier_values, "unknown") );
+ parameter_length = tvb_get_ntohs(cause_tvb, CAUSE_LENGTH_OFFSET) - CAUSE_HEADER_LENGTH;
+ parameter_tvb = tvb_new_subset(cause_tvb, CAUSE_INFO_OFFSET, parameter_length, parameter_length);
+ proto_item_append_text(cause_item, " (Address: ");
+ dissect_parameter(parameter_tvb, pinfo, cause_tree, cause_item, FALSE);
+ proto_item_append_text(cause_item, ")");
}
static void
-dissect_unrecognized_chunk_type_cause(tvbuff_t *cause_tvb, packet_info *pinfo,
- proto_tree *cause_tree, proto_item *cause_item)
+dissect_unrecognized_chunk_type_cause(tvbuff_t *cause_tvb, packet_info *pinfo, proto_tree *cause_tree, proto_item *cause_item)
{
- guint16 length, chunk_length;
+ guint16 chunk_length;
guint8 unrecognized_type;
tvbuff_t *unrecognized_chunk_tvb;
- length = tvb_get_ntohs(cause_tvb, CAUSE_LENGTH_OFFSET);
-
- chunk_length = length - CAUSE_HEADER_LENGTH;
-
+ chunk_length = tvb_get_ntohs(cause_tvb, CAUSE_LENGTH_OFFSET) - CAUSE_HEADER_LENGTH;
unrecognized_chunk_tvb = tvb_new_subset(cause_tvb, CAUSE_INFO_OFFSET, chunk_length, chunk_length);
- dissect_sctp_chunk(unrecognized_chunk_tvb, pinfo, cause_tree,cause_tree);
-
+ dissect_sctp_chunk(unrecognized_chunk_tvb, pinfo, cause_tree,cause_tree, FALSE);
unrecognized_type = tvb_get_guint8(unrecognized_chunk_tvb, CHUNK_TYPE_OFFSET);
-
- proto_item_set_text(cause_item, "Error cause reporting unrecognized chunk of type %u (%s)",
- unrecognized_type,
- val_to_str(unrecognized_type, sctp_chunk_type_values, "unknown"));
+ proto_item_append_text(cause_item, " (Type: %u (%s))", unrecognized_type, val_to_str(unrecognized_type, chunk_type_values, "unknown"));
}
static void
-dissect_invalid_mandatory_parameter_cause(proto_item *cause_item)
+dissect_invalid_mandatory_parameter_cause(tvbuff_t *cause_tvb _U_)
{
- proto_item_set_text(cause_item, "Error cause reporting an invalid mandatory parameter");
}
static void
-dissect_unrecognized_parameters_cause(tvbuff_t *cause_tvb, packet_info *pinfo, proto_tree *cause_tree, proto_item *cause_item)
+dissect_unrecognized_parameters_cause(tvbuff_t *cause_tvb, packet_info *pinfo, proto_tree *cause_tree)
{
- guint16 length, padding_length, cause_info_length;
+ guint16 cause_info_length;
tvbuff_t *unrecognized_parameters_tvb;
- length = tvb_get_ntohs(cause_tvb, CAUSE_LENGTH_OFFSET);
- padding_length = nr_of_padding_bytes(length);
- cause_info_length = length - CAUSE_HEADER_LENGTH + padding_length;
+ cause_info_length = tvb_get_ntohs(cause_tvb, CAUSE_LENGTH_OFFSET) - CAUSE_HEADER_LENGTH;
unrecognized_parameters_tvb = tvb_new_subset(cause_tvb, CAUSE_INFO_OFFSET, cause_info_length, cause_info_length);
- dissect_tlv_parameter_list(unrecognized_parameters_tvb, pinfo, cause_tree);
-
- proto_item_set_text(cause_item, "Error cause reporting unrecognized parameters");
+ dissect_parameters(unrecognized_parameters_tvb, pinfo, cause_tree, NULL, FALSE);
}
+#define CAUSE_TSN_LENGTH 4
+#define CAUSE_TSN_OFFSET CAUSE_INFO_OFFSET
+
static void
dissect_no_user_data_cause(tvbuff_t *cause_tvb, proto_tree *cause_tree, proto_item *cause_item)
{
- guint32 tsn;
+ proto_tree_add_item(cause_tree, hf_cause_tsn, cause_tvb, CAUSE_TSN_OFFSET, CAUSE_TSN_LENGTH, NETWORK_BYTE_ORDER);
+ proto_item_append_text(cause_item, " (TSN: %u)", tvb_get_ntohl(cause_tvb, CAUSE_TSN_OFFSET));
+}
+
+static void
+dissect_cookie_received_while_shutting_down_cause(tvbuff_t *cause_tvb _U_)
+{
+}
+
+static void
+dissect_restart_with_new_address_cause(tvbuff_t *cause_tvb, packet_info *pinfo, proto_tree* cause_tree, proto_item *cause_item)
+{
+ guint16 cause_info_length;
+ tvbuff_t *parameter_tvb;
+
+ cause_info_length = tvb_get_ntohs(cause_tvb, CAUSE_LENGTH_OFFSET) - CAUSE_HEADER_LENGTH;
+ parameter_tvb = tvb_new_subset(cause_tvb, CAUSE_INFO_OFFSET, cause_info_length, cause_info_length);
+ proto_item_append_text(cause_item, " (New addresses: ");
+ dissect_parameters(parameter_tvb, pinfo, cause_tree, cause_item, FALSE);
+ proto_item_append_text(cause_item, ")");
+}
- tsn = tvb_get_ntohl(cause_tvb, CAUSE_TSN_OFFSET);
- proto_tree_add_uint(cause_tree, hf_sctp_cause_tsn, cause_tvb,
- CAUSE_TSN_OFFSET,
- CAUSE_TSN_LENGTH,
- tsn);
+static void
+dissect_user_initiated_abort_cause(tvbuff_t *cause_tvb, proto_tree *cause_tree)
+{
+ guint16 cause_info_length;
- proto_item_set_text(cause_item, "Error cause reporting data chunk with TSN %u contains no data",
- tsn);
+ cause_info_length = tvb_get_ntohs(cause_tvb, CAUSE_LENGTH_OFFSET) - CAUSE_HEADER_LENGTH;
+ if (cause_info_length > 0)
+ proto_tree_add_item(cause_tree, hf_cause_info, cause_tvb, CAUSE_INFO_OFFSET, cause_info_length, NETWORK_BYTE_ORDER);
}
static void
-dissect_cookie_received_while_shutting_down_cause(proto_item *cause_item)
+dissect_protocol_violation_cause(tvbuff_t *cause_tvb, proto_tree *cause_tree)
{
- proto_item_set_text(cause_item, "Error cause reporting cookie reception while shutting down");
+ guint16 cause_info_length;
+
+ cause_info_length = tvb_get_ntohs(cause_tvb, CAUSE_LENGTH_OFFSET) - CAUSE_HEADER_LENGTH;
+ if (cause_info_length > 0)
+ proto_tree_add_item(cause_tree, hf_cause_info, cause_tvb, CAUSE_INFO_OFFSET, cause_info_length, NETWORK_BYTE_ORDER);
}
static void
dissect_delete_last_address_cause(tvbuff_t *cause_tvb, packet_info *pinfo, proto_tree *cause_tree, proto_item *cause_item)
{
- guint16 length, cause_info_length;
+ guint16 cause_info_length;
tvbuff_t *parameter_tvb;
- length = tvb_get_ntohs(cause_tvb, CAUSE_LENGTH_OFFSET);
- cause_info_length = length - CAUSE_HEADER_LENGTH;
+ cause_info_length = tvb_get_ntohs(cause_tvb, CAUSE_LENGTH_OFFSET) - CAUSE_HEADER_LENGTH;
parameter_tvb = tvb_new_subset(cause_tvb, CAUSE_INFO_OFFSET, cause_info_length, cause_info_length);
- dissect_parameter(parameter_tvb, pinfo, cause_tree);
- proto_item_set_text(cause_item, "Delete last address cause");
+ proto_item_append_text(cause_item, " (Last address: ");
+ dissect_parameter(parameter_tvb, pinfo, cause_tree, cause_item, FALSE);
+ proto_item_append_text(cause_item, ")");
}
static void
-dissect_resource_outage_cause(tvbuff_t *cause_tvb, packet_info *pinfo, proto_tree *cause_tree, proto_item *cause_item)
+dissect_resource_outage_cause(tvbuff_t *cause_tvb, packet_info *pinfo, proto_tree *cause_tree)
{
- guint16 length, cause_info_length;
+ guint16 cause_info_length;
tvbuff_t *parameter_tvb;
- length = tvb_get_ntohs(cause_tvb, CAUSE_LENGTH_OFFSET);
- cause_info_length = length - CAUSE_HEADER_LENGTH;
- parameter_tvb = tvb_new_subset(cause_tvb, CAUSE_INFO_OFFSET, cause_info_length, cause_info_length);
- dissect_parameter(parameter_tvb, pinfo, cause_tree);
- proto_item_set_text(cause_item, "Operation refused due to resource shortage");
+ cause_info_length = tvb_get_ntohs(cause_tvb, CAUSE_LENGTH_OFFSET) - CAUSE_HEADER_LENGTH;
+ parameter_tvb = tvb_new_subset(cause_tvb, CAUSE_INFO_OFFSET, cause_info_length, cause_info_length);
+ dissect_parameter(parameter_tvb, pinfo, cause_tree, NULL, FALSE);
}
static void
dissect_delete_source_address_cause(tvbuff_t *cause_tvb, packet_info *pinfo, proto_tree *cause_tree, proto_item *cause_item)
{
- guint16 length, cause_info_length;
+ guint16 cause_info_length;
+ tvbuff_t *parameter_tvb;
+
+ cause_info_length = tvb_get_ntohs(cause_tvb, CAUSE_LENGTH_OFFSET) - CAUSE_HEADER_LENGTH;
+ parameter_tvb = tvb_new_subset(cause_tvb, CAUSE_INFO_OFFSET, cause_info_length, cause_info_length);
+ proto_item_append_text(cause_item, " (Deleted address: ");
+ dissect_parameter(parameter_tvb, pinfo, cause_tree, cause_item, FALSE);
+ proto_item_append_text(cause_item, ")");
+}
+
+static void
+dissect_request_refused_cause(tvbuff_t *cause_tvb, packet_info *pinfo, proto_tree *cause_tree)
+{
+ guint16 cause_info_length;
tvbuff_t *parameter_tvb;
- length = tvb_get_ntohs(cause_tvb, CAUSE_LENGTH_OFFSET);
- cause_info_length = length - CAUSE_HEADER_LENGTH;
+ cause_info_length = tvb_get_ntohs(cause_tvb, CAUSE_LENGTH_OFFSET) - CAUSE_HEADER_LENGTH;
parameter_tvb = tvb_new_subset(cause_tvb, CAUSE_INFO_OFFSET, cause_info_length, cause_info_length);
- dissect_parameter(parameter_tvb, pinfo, cause_tree);
- proto_item_set_text(cause_item, "Delete source address cause");
+ dissect_parameter(parameter_tvb, pinfo, cause_tree, NULL, FALSE);
}
static void
dissect_unknown_cause(tvbuff_t *cause_tvb, proto_tree *cause_tree, proto_item *cause_item)
{
- guint16 code, length, cause_info_length;
+ guint16 cause_info_length;
- code = tvb_get_ntohs(cause_tvb, CAUSE_CODE_OFFSET);
- length = tvb_get_ntohs(cause_tvb, CAUSE_LENGTH_OFFSET);
+ cause_info_length = tvb_get_ntohs(cause_tvb, CAUSE_LENGTH_OFFSET) - CAUSE_HEADER_LENGTH;
+ if (cause_info_length > 0)
+ proto_tree_add_item(cause_tree, hf_cause_info, cause_tvb, CAUSE_INFO_OFFSET, cause_info_length, NETWORK_BYTE_ORDER);
+ proto_item_append_text(cause_item, "Code: %u, information length: %u byte%s)", tvb_get_ntohs(cause_tvb, CAUSE_CODE_OFFSET), cause_info_length, plurality(cause_info_length, "", "s"));
+}
- cause_info_length = length - CAUSE_HEADER_LENGTH;
+#define INVALID_STREAM_IDENTIFIER 0x01
+#define MISSING_MANDATORY_PARAMETERS 0x02
+#define STALE_COOKIE_ERROR 0x03
+#define OUT_OF_RESOURCE 0x04
+#define UNRESOLVABLE_ADDRESS 0x05
+#define UNRECOGNIZED_CHUNK_TYPE 0x06
+#define INVALID_MANDATORY_PARAMETER 0x07
+#define UNRECOGNIZED_PARAMETERS 0x08
+#define NO_USER_DATA 0x09
+#define COOKIE_RECEIVED_WHILE_SHUTTING_DOWN 0x0a
+#define RESTART_WITH_NEW_ADDRESSES 0x0b
+#define USER_INITIATED_ABORT 0x0c
+#define PROTOCOL_VIOLATION 0x0d
+#define REQUEST_TO_DELETE_LAST_ADDRESS 0x0100
+#define OPERATION_REFUSED_DUE_TO_RESOURCE_SHORTAGE 0X0101
+#define REQUEST_TO_DELETE_SOURCE_ADDRESS 0x0102
+#define ABORT_DUE_TO_ILLEGAL_ASCONF 0x0103
+#define REQUESTION_REFUSED 0x0104
- proto_tree_add_text(cause_tree, cause_tvb, CAUSE_INFO_OFFSET, cause_info_length,
- "Cause specific information (%u byte%s)",
- cause_info_length, plurality(cause_info_length, "", "s"));
+static const value_string cause_code_values[] = {
+ { INVALID_STREAM_IDENTIFIER, "Invalid stream identifier" },
+ { MISSING_MANDATORY_PARAMETERS, "Missing mandatory parameter" },
+ { STALE_COOKIE_ERROR, "Stale cookie error" },
+ { OUT_OF_RESOURCE, "Out of resource" },
+ { UNRESOLVABLE_ADDRESS, "Unresolvable address" },
+ { UNRECOGNIZED_CHUNK_TYPE, "Unrecognized chunk type" },
+ { INVALID_MANDATORY_PARAMETER, "Invalid mandatory parameter" },
+ { UNRECOGNIZED_PARAMETERS, "Unrecognized parameters" },
+ { NO_USER_DATA, "No user data" },
+ { COOKIE_RECEIVED_WHILE_SHUTTING_DOWN, "Cookie received while shutting down" },
+ { RESTART_WITH_NEW_ADDRESSES, "Restart of an association with new addresses" },
+ { USER_INITIATED_ABORT, "User initiated ABORT" },
+ { PROTOCOL_VIOLATION, "Protocol violation" },
+ { REQUEST_TO_DELETE_LAST_ADDRESS, "Request to delete last address" },
+ { OPERATION_REFUSED_DUE_TO_RESOURCE_SHORTAGE, "Operation refused due to resource shortage" },
+ { REQUEST_TO_DELETE_SOURCE_ADDRESS, "Request to delete source address" },
+ { ABORT_DUE_TO_ILLEGAL_ASCONF, "Association Aborted due to illegal ASCONF-ACK" },
+ { REQUESTION_REFUSED, "Request refused - no authorization" },
+ { 0, NULL } };
- proto_item_set_text(cause_item, "Error cause with code %u and %u byte%s information",
- code, cause_info_length, plurality(cause_info_length, "", "s"));
-}
static void
dissect_error_cause(tvbuff_t *cause_tvb, packet_info *pinfo, proto_tree *chunk_tree)
{
- guint16 code, length, padding_length, total_length;
+ guint16 code, length, padding_length;
proto_item *cause_item;
proto_tree *cause_tree;
code = tvb_get_ntohs(cause_tvb, CAUSE_CODE_OFFSET);
length = tvb_get_ntohs(cause_tvb, CAUSE_LENGTH_OFFSET);
- padding_length = nr_of_padding_bytes(length);
- total_length = length + padding_length;
+ padding_length = tvb_length(cause_tvb) - length;
- cause_item = proto_tree_add_text(chunk_tree, cause_tvb,
- CAUSE_HEADER_OFFSET, total_length,
- "BAD ERROR CAUSE");
+ cause_item = proto_tree_add_text(chunk_tree, cause_tvb, CAUSE_HEADER_OFFSET, tvb_length(cause_tvb), "%s cause", val_to_str(code, cause_code_values, "Unknown"));
cause_tree = proto_item_add_subtree(cause_item, ett_sctp_chunk_cause);
- proto_tree_add_uint(cause_tree, hf_sctp_cause_code,
- cause_tvb, CAUSE_CODE_OFFSET, CAUSE_CODE_LENGTH,
- code);
- proto_tree_add_uint(cause_tree, hf_sctp_cause_length,
- cause_tvb, CAUSE_LENGTH_OFFSET, CAUSE_LENGTH_LENGTH,
- length);
+ proto_tree_add_item(cause_tree, hf_cause_code, cause_tvb, CAUSE_CODE_OFFSET, CAUSE_CODE_LENGTH, NETWORK_BYTE_ORDER);
+ proto_tree_add_item(cause_tree, hf_cause_length, cause_tvb, CAUSE_LENGTH_OFFSET, CAUSE_LENGTH_LENGTH, NETWORK_BYTE_ORDER);
switch(code) {
case INVALID_STREAM_IDENTIFIER:
dissect_invalid_stream_identifier_cause(cause_tvb, cause_tree, cause_item);
break;
case MISSING_MANDATORY_PARAMETERS:
- dissect_missing_mandatory_parameters_cause(cause_tvb, cause_tree, cause_item);
+ dissect_missing_mandatory_parameters_cause(cause_tvb, cause_tree);
break;
case STALE_COOKIE_ERROR:
dissect_stale_cookie_error_cause(cause_tvb, cause_tree, cause_item);
break;
case OUT_OF_RESOURCE:
- dissect_out_of_resource_cause(cause_item);
+ dissect_out_of_resource_cause(cause_tvb);
break;
case UNRESOLVABLE_ADDRESS:
dissect_unresolvable_address_cause(cause_tvb, pinfo, cause_tree, cause_item);
dissect_unrecognized_chunk_type_cause(cause_tvb, pinfo, cause_tree, cause_item);
break;
case INVALID_MANDATORY_PARAMETER:
- dissect_invalid_mandatory_parameter_cause(cause_item);
+ dissect_invalid_mandatory_parameter_cause(cause_tvb);
break;
case UNRECOGNIZED_PARAMETERS:
- dissect_unrecognized_parameters_cause(cause_tvb, pinfo, cause_tree, cause_item);
+ dissect_unrecognized_parameters_cause(cause_tvb, pinfo, cause_tree);
break;
case NO_USER_DATA:
dissect_no_user_data_cause(cause_tvb, cause_tree, cause_item);
break;
case COOKIE_RECEIVED_WHILE_SHUTTING_DOWN:
- dissect_cookie_received_while_shutting_down_cause(cause_item);
+ dissect_cookie_received_while_shutting_down_cause(cause_tvb);
+ break;
+ case RESTART_WITH_NEW_ADDRESSES:
+ dissect_restart_with_new_address_cause(cause_tvb, pinfo, cause_tree, cause_item);
+ break;
+ case USER_INITIATED_ABORT:
+ dissect_user_initiated_abort_cause(cause_tvb, cause_tree);
+ break;
+ case PROTOCOL_VIOLATION:
+ dissect_protocol_violation_cause(cause_tvb, cause_tree);
break;
case REQUEST_TO_DELETE_LAST_ADDRESS:
dissect_delete_last_address_cause(cause_tvb, pinfo, cause_tree, cause_item);
break;
case OPERATION_REFUSED_DUE_TO_RESOURCE_SHORTAGE:
- dissect_resource_outage_cause(cause_tvb, pinfo, cause_tree, cause_item);
+ dissect_resource_outage_cause(cause_tvb, pinfo, cause_tree);
break;
case REQUEST_TO_DELETE_SOURCE_ADDRESS:
dissect_delete_source_address_cause(cause_tvb, pinfo, cause_tree, cause_item);
break;
+ case REQUESTION_REFUSED:
+ dissect_request_refused_cause(cause_tvb, pinfo, cause_tree);
+ break;
default:
dissect_unknown_cause(cause_tvb, cause_tree, cause_item);
break;
- };
- if ((padding_length > 0) && (code != UNRECOGNIZED_PARAMETERS))
- proto_tree_add_text(cause_tree, cause_tvb, CAUSE_HEADER_OFFSET + length, padding_length,
- "Padding: %u byte%s",
- padding_length, plurality(padding_length, "", "s"));
+ }
+
+ if (padding_length > 0)
+ proto_tree_add_item(cause_tree, hf_cause_padding, cause_tvb, CAUSE_HEADER_OFFSET + length, padding_length, NETWORK_BYTE_ORDER);
}
+static void
+dissect_error_causes(tvbuff_t *causes_tvb, packet_info *pinfo, proto_tree *tree)
+{
+ gint offset, length, total_length, remaining_length;
+ tvbuff_t *cause_tvb;
+
+ offset = 0;
+ while((remaining_length = tvb_length_remaining(causes_tvb, offset))) {
+ length = tvb_get_ntohs(causes_tvb, offset + CAUSE_LENGTH_OFFSET);
+ total_length = ADD_PADDING(length);
+ if (remaining_length >= length)
+ total_length = MIN(total_length, remaining_length);
+ /* create a tvb for the parameter including the padding bytes */
+ cause_tvb = tvb_new_subset(causes_tvb, offset, total_length, total_length);
+ dissect_error_cause(cause_tvb, pinfo, tree);
+ /* get rid of the handled cause */
+ offset += total_length;
+ }
+}
+
+
/*
* Code to actually dissect the packets
*/
+static gboolean try_heuristic_first = FALSE;
+
static gboolean
dissect_payload(tvbuff_t *payload_tvb, packet_info *pinfo, proto_tree *tree, guint32 ppi)
{
guint32 low_port, high_port;
+ if (try_heuristic_first) {
+ /* do lookup with the heuristic subdissector table */
+ if (dissector_try_heuristic(sctp_heur_subdissector_list, payload_tvb, pinfo, tree))
+ return TRUE;
+ }
+
/* Do lookups with the subdissector table.
When trying port numbers, we try the port number with the lower value
that, for packets where a dissector is registered for *both* port
numbers, and where there's no match on the PPI:
- 1) we pick the same dissector for traffic going in both directions;
+ 1) we pick the same dissector for traffic going in both directions;
- 2) we prefer the port number that's more likely to be the right
- one (as that prefers well-known ports to reserved ports);
+ 2) we prefer the port number that's more likely to be the right
+ one (as that prefers well-known ports to reserved ports);
although there is, of course, no guarantee that any such strategy
will always pick the right port number.
dissector_try_port(sctp_port_dissector_table, high_port, payload_tvb, pinfo, tree))
return TRUE;
- if (check_col(pinfo->cinfo, COL_INFO))
- col_append_str(pinfo->cinfo, COL_INFO, "DATA ");
- call_dissector(data_handle, payload_tvb, pinfo, tree);
- return TRUE;
-}
+ if (!try_heuristic_first) {
+ /* do lookup with the heuristic subdissector table */
+ if (dissector_try_heuristic(sctp_heur_subdissector_list, payload_tvb, pinfo, tree))
+ return TRUE;
+ }
+
+ /* Oh, well, we don't know this; dissect it as data. */
+ call_dissector(data_handle, payload_tvb, pinfo, tree);
+ return TRUE;
+}
+
+#define DATA_CHUNK_TSN_LENGTH 4
+#define DATA_CHUNK_STREAM_ID_LENGTH 2
+#define DATA_CHUNK_STREAM_SEQ_NUMBER_LENGTH 2
+#define DATA_CHUNK_PAYLOAD_PROTOCOL_ID_LENGTH 4
+
+#define DATA_CHUNK_TSN_OFFSET (CHUNK_VALUE_OFFSET + 0)
+#define DATA_CHUNK_STREAM_ID_OFFSET (DATA_CHUNK_TSN_OFFSET + DATA_CHUNK_TSN_LENGTH)
+#define DATA_CHUNK_STREAM_SEQ_NUMBER_OFFSET (DATA_CHUNK_STREAM_ID_OFFSET + \
+ DATA_CHUNK_STREAM_SEQ_NUMBER_LENGTH)
+#define DATA_CHUNK_PAYLOAD_PROTOCOL_ID_OFFSET (DATA_CHUNK_STREAM_SEQ_NUMBER_OFFSET + \
+ DATA_CHUNK_STREAM_SEQ_NUMBER_LENGTH)
+#define DATA_CHUNK_PAYLOAD_OFFSET (DATA_CHUNK_PAYLOAD_PROTOCOL_ID_OFFSET + \
+ DATA_CHUNK_PAYLOAD_PROTOCOL_ID_LENGTH)
+
+#define DATA_CHUNK_HEADER_LENGTH (CHUNK_HEADER_LENGTH + \
+ DATA_CHUNK_TSN_LENGTH + \
+ DATA_CHUNK_STREAM_ID_LENGTH + \
+ DATA_CHUNK_STREAM_SEQ_NUMBER_LENGTH + \
+ DATA_CHUNK_PAYLOAD_PROTOCOL_ID_LENGTH)
+
+#define SCTP_DATA_CHUNK_E_BIT 0x01
+#define SCTP_DATA_CHUNK_B_BIT 0x02
+#define SCTP_DATA_CHUNK_U_BIT 0x04
+
+static const true_false_string sctp_data_chunk_e_bit_value = {
+ "Last segment",
+ "Not the last segment"
+};
+
+static const true_false_string sctp_data_chunk_b_bit_value = {
+ "First segment",
+ "Subsequent segment"
+};
+
+static const true_false_string sctp_data_chunk_u_bit_value = {
+ "Unordered delivery",
+ "Ordered deliviery"
+};
static gboolean
-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)
+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)
{
- guint8 flags;
- guint16 length, total_payload_length, payload_length, padding_length, stream_id, stream_seq_number;
- guint32 tsn, payload_proto_id;
- proto_tree *flag_tree;
+ guint16 payload_length;
+ guint32 payload_proto_id;
tvbuff_t *payload_tvb;
-
- 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,
- payload_length, payload_length);
- payload_proto_id = tvb_get_ntohl(chunk_tvb, DATA_CHUNK_PAYLOAD_PROTOCOL_ID_OFFSET);
+ proto_tree *flags_tree;
+ guint8 e_bit, b_bit, u_bit;
+
+ payload_proto_id = tvb_get_ntohl(chunk_tvb, DATA_CHUNK_PAYLOAD_PROTOCOL_ID_OFFSET);
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);
-
- 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);
- if (padding_length > 0)
- proto_tree_add_text(chunk_tree, chunk_tvb, DATA_CHUNK_PAYLOAD_OFFSET + payload_length, padding_length,
- "Padding: %u byte%s",
- padding_length, plurality(padding_length, "", "s"));
-
- 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"));
proto_item_set_len(chunk_item, DATA_CHUNK_HEADER_LENGTH);
-
- };
+ flags_tree = proto_item_add_subtree(flags_item, ett_sctp_data_chunk_flags);
+ proto_tree_add_item(flags_tree, hf_data_chunk_e_bit, chunk_tvb, CHUNK_FLAGS_OFFSET, CHUNK_FLAGS_LENGTH, NETWORK_BYTE_ORDER);
+ proto_tree_add_item(flags_tree, hf_data_chunk_b_bit, chunk_tvb, CHUNK_FLAGS_OFFSET, CHUNK_FLAGS_LENGTH, NETWORK_BYTE_ORDER);
+ proto_tree_add_item(flags_tree, hf_data_chunk_u_bit, chunk_tvb, CHUNK_FLAGS_OFFSET, CHUNK_FLAGS_LENGTH, NETWORK_BYTE_ORDER);
+ proto_tree_add_item(chunk_tree, hf_data_chunk_tsn, chunk_tvb, DATA_CHUNK_TSN_OFFSET, DATA_CHUNK_TSN_LENGTH, NETWORK_BYTE_ORDER);
+ proto_tree_add_item(chunk_tree, hf_data_chunk_stream_id, chunk_tvb, DATA_CHUNK_STREAM_ID_OFFSET, DATA_CHUNK_STREAM_ID_LENGTH, NETWORK_BYTE_ORDER);
+ proto_tree_add_item(chunk_tree, hf_data_chunk_stream_seq_number, chunk_tvb, DATA_CHUNK_STREAM_SEQ_NUMBER_OFFSET, DATA_CHUNK_STREAM_SEQ_NUMBER_LENGTH, NETWORK_BYTE_ORDER);
+ proto_tree_add_item(chunk_tree, hf_data_chunk_payload_proto_id, chunk_tvb, DATA_CHUNK_PAYLOAD_PROTOCOL_ID_OFFSET, DATA_CHUNK_PAYLOAD_PROTOCOL_ID_LENGTH, NETWORK_BYTE_ORDER);
+
+ e_bit = tvb_get_guint8(chunk_tvb, CHUNK_FLAGS_OFFSET) & SCTP_DATA_CHUNK_E_BIT;
+ b_bit = tvb_get_guint8(chunk_tvb, CHUNK_FLAGS_OFFSET) & SCTP_DATA_CHUNK_B_BIT;
+ u_bit = tvb_get_guint8(chunk_tvb, CHUNK_FLAGS_OFFSET) & SCTP_DATA_CHUNK_U_BIT;
+
+ proto_item_append_text(chunk_item, "(%s, ", (u_bit) ? "unordered" : "ordered");
+ if (b_bit) {
+ if (e_bit)
+ proto_item_append_text(chunk_item, "complete");
+ else
+ proto_item_append_text(chunk_item, "first");
+ } else {
+ if (e_bit)
+ proto_item_append_text(chunk_item, "last");
+ else
+ proto_item_append_text(chunk_item, "middle");
+ }
+
+ proto_item_append_text(chunk_item, " segment, TSN: %u, SID: %u, SSN: %u, PPID: %u",
+ tvb_get_ntohl(chunk_tvb, DATA_CHUNK_TSN_OFFSET),
+ tvb_get_ntohs(chunk_tvb, DATA_CHUNK_STREAM_ID_OFFSET),
+ tvb_get_ntohs(chunk_tvb, DATA_CHUNK_STREAM_SEQ_NUMBER_OFFSET),
+ payload_proto_id);
+ }
+ payload_length = tvb_get_ntohs(chunk_tvb, CHUNK_LENGTH_OFFSET);
+ if (payload_length < DATA_CHUNK_HEADER_LENGTH) {
+ if (chunk_tree) {
+ proto_item_append_text(chunk_item, ", bogus chunk length %u < %u)",
+ payload_length, DATA_CHUNK_HEADER_LENGTH);
+ }
+ return TRUE;
+ }
+ payload_length -= DATA_CHUNK_HEADER_LENGTH;
+ if (chunk_tree) {
+ proto_item_append_text(chunk_item, ", payload length: %u byte%s)",
+ payload_length, plurality(payload_length, "", "s"));
+ }
+ payload_tvb = tvb_new_subset(chunk_tvb, DATA_CHUNK_PAYLOAD_OFFSET, payload_length, payload_length);
return dissect_payload(payload_tvb, pinfo, tree, payload_proto_id);
}
+#define INIT_CHUNK_INITIATE_TAG_LENGTH 4
+#define INIT_CHUNK_ADV_REC_WINDOW_CREDIT_LENGTH 4
+#define INIT_CHUNK_NUMBER_OF_OUTBOUND_STREAMS_LENGTH 2
+#define INIT_CHUNK_NUMBER_OF_INBOUND_STREAMS_LENGTH 2
+#define INIT_CHUNK_INITIAL_TSN_LENGTH 4
+#define INIT_CHUNK_FIXED_PARAMTERS_LENGTH (INIT_CHUNK_INITIATE_TAG_LENGTH + \
+ INIT_CHUNK_ADV_REC_WINDOW_CREDIT_LENGTH + \
+ INIT_CHUNK_NUMBER_OF_OUTBOUND_STREAMS_LENGTH + \
+ INIT_CHUNK_NUMBER_OF_INBOUND_STREAMS_LENGTH + \
+ INIT_CHUNK_INITIAL_TSN_LENGTH)
+
+#define INIT_CHUNK_INITIATE_TAG_OFFSET CHUNK_VALUE_OFFSET
+#define INIT_CHUNK_ADV_REC_WINDOW_CREDIT_OFFSET (INIT_CHUNK_INITIATE_TAG_OFFSET + \
+ INIT_CHUNK_INITIATE_TAG_LENGTH )
+#define INIT_CHUNK_NUMBER_OF_OUTBOUND_STREAMS_OFFSET (INIT_CHUNK_ADV_REC_WINDOW_CREDIT_OFFSET + \
+ INIT_CHUNK_ADV_REC_WINDOW_CREDIT_LENGTH )
+#define INIT_CHUNK_NUMBER_OF_INBOUND_STREAMS_OFFSET (INIT_CHUNK_NUMBER_OF_OUTBOUND_STREAMS_OFFSET + \
+ INIT_CHUNK_NUMBER_OF_OUTBOUND_STREAMS_LENGTH )
+#define INIT_CHUNK_INITIAL_TSN_OFFSET (INIT_CHUNK_NUMBER_OF_INBOUND_STREAMS_OFFSET + \
+ INIT_CHUNK_NUMBER_OF_INBOUND_STREAMS_LENGTH )
+#define INIT_CHUNK_VARIABLE_LENGTH_PARAMETER_OFFSET (INIT_CHUNK_INITIAL_TSN_OFFSET + \
+ INIT_CHUNK_INITIAL_TSN_LENGTH )
+
static void
-dissect_init_chunk(tvbuff_t *chunk_tvb, packet_info *pinfo,
- proto_tree *chunk_tree, proto_item *chunk_item)
+dissect_init_chunk(tvbuff_t *chunk_tvb, packet_info *pinfo, proto_tree *chunk_tree, proto_item *chunk_item)
{
- guint32 initiate_tag, adv_rec_window_credit, initial_tsn;
- guint16 number_of_inbound_streams, number_of_outbound_streams;
- guint8 type;
- tvbuff_t *parameter_list_tvb;
-
- type = tvb_get_guint8(chunk_tvb, CHUNK_TYPE_OFFSET);
-
- if (check_col(pinfo->cinfo, COL_INFO)) {
- if (type == SCTP_INIT_CHUNK_ID) {
- col_append_str(pinfo->cinfo, COL_INFO, "INIT ");
- } else {
- col_append_str(pinfo->cinfo, COL_INFO, "INIT_ACK ");
- };
- };
+ gint parameters_length;
+ tvbuff_t *parameters_tvb;
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);
+ proto_tree_add_item(chunk_tree, hf_init_chunk_initiate_tag, chunk_tvb, INIT_CHUNK_INITIATE_TAG_OFFSET, INIT_CHUNK_INITIATE_TAG_LENGTH, NETWORK_BYTE_ORDER);
+ proto_tree_add_item_hidden(chunk_tree, hf_initiate_tag, chunk_tvb, INIT_CHUNK_INITIATE_TAG_OFFSET, INIT_CHUNK_INITIATE_TAG_LENGTH, NETWORK_BYTE_ORDER);
+ proto_tree_add_item(chunk_tree, hf_init_chunk_adv_rec_window_credit, chunk_tvb, INIT_CHUNK_ADV_REC_WINDOW_CREDIT_OFFSET, INIT_CHUNK_ADV_REC_WINDOW_CREDIT_LENGTH, NETWORK_BYTE_ORDER);
+ proto_tree_add_item(chunk_tree, hf_init_chunk_number_of_outbound_streams, chunk_tvb, INIT_CHUNK_NUMBER_OF_OUTBOUND_STREAMS_OFFSET, INIT_CHUNK_NUMBER_OF_OUTBOUND_STREAMS_LENGTH, NETWORK_BYTE_ORDER);
+ proto_tree_add_item(chunk_tree, hf_init_chunk_number_of_inbound_streams, chunk_tvb, INIT_CHUNK_NUMBER_OF_INBOUND_STREAMS_OFFSET, INIT_CHUNK_NUMBER_OF_INBOUND_STREAMS_LENGTH, NETWORK_BYTE_ORDER);
+ proto_tree_add_item(chunk_tree, hf_init_chunk_initial_tsn, chunk_tvb, INIT_CHUNK_INITIAL_TSN_OFFSET, INIT_CHUNK_INITIAL_TSN_LENGTH, NETWORK_BYTE_ORDER);
/* 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, pinfo, 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"));
+ parameters_length = tvb_get_ntohs(chunk_tvb, CHUNK_LENGTH_OFFSET) - INIT_CHUNK_FIXED_PARAMTERS_LENGTH - CHUNK_HEADER_LENGTH;
+ parameters_tvb = tvb_new_subset(chunk_tvb, INIT_CHUNK_VARIABLE_LENGTH_PARAMETER_OFFSET, parameters_length, parameters_length);
+ dissect_parameters(parameters_tvb, pinfo, chunk_tree, NULL, TRUE);
+
+ proto_item_append_text(chunk_item, " (Outbound streams: %u, inbound streams: %u)",
+ tvb_get_ntohs(chunk_tvb, INIT_CHUNK_NUMBER_OF_OUTBOUND_STREAMS_OFFSET),
+ tvb_get_ntohs(chunk_tvb, INIT_CHUNK_NUMBER_OF_INBOUND_STREAMS_OFFSET));
}
}
static void
-dissect_init_ack_chunk(tvbuff_t *chunk_tvb, packet_info *pinfo,
- proto_tree *chunk_tree, proto_item *chunk_item)
+dissect_init_ack_chunk(tvbuff_t *chunk_tvb, packet_info *pinfo, proto_tree *chunk_tree, proto_item *chunk_item)
{
- dissect_init_chunk(chunk_tvb, pinfo, chunk_tree, chunk_item);
+ gint parameters_length;
+ tvbuff_t *parameters_tvb;
+
+ if (chunk_tree) {
+ /* handle fixed parameters */
+ proto_tree_add_item(chunk_tree, hf_initack_chunk_initiate_tag, chunk_tvb, INIT_CHUNK_INITIATE_TAG_OFFSET, INIT_CHUNK_INITIATE_TAG_LENGTH, NETWORK_BYTE_ORDER);
+ proto_tree_add_item_hidden(chunk_tree, hf_initiate_tag, chunk_tvb, INIT_CHUNK_INITIATE_TAG_OFFSET, INIT_CHUNK_INITIATE_TAG_LENGTH, NETWORK_BYTE_ORDER);
+ proto_tree_add_item(chunk_tree, hf_initack_chunk_adv_rec_window_credit, chunk_tvb, INIT_CHUNK_ADV_REC_WINDOW_CREDIT_OFFSET, INIT_CHUNK_ADV_REC_WINDOW_CREDIT_LENGTH, NETWORK_BYTE_ORDER);
+ proto_tree_add_item(chunk_tree, hf_initack_chunk_number_of_outbound_streams, chunk_tvb, INIT_CHUNK_NUMBER_OF_OUTBOUND_STREAMS_OFFSET, INIT_CHUNK_NUMBER_OF_OUTBOUND_STREAMS_LENGTH, NETWORK_BYTE_ORDER);
+ proto_tree_add_item(chunk_tree, hf_initack_chunk_number_of_inbound_streams, chunk_tvb, INIT_CHUNK_NUMBER_OF_INBOUND_STREAMS_OFFSET, INIT_CHUNK_NUMBER_OF_INBOUND_STREAMS_LENGTH, NETWORK_BYTE_ORDER);
+ proto_tree_add_item(chunk_tree, hf_initack_chunk_initial_tsn, chunk_tvb, INIT_CHUNK_INITIAL_TSN_OFFSET, INIT_CHUNK_INITIAL_TSN_LENGTH, NETWORK_BYTE_ORDER);
+
+ /* handle variable paramters */
+ parameters_length = tvb_get_ntohs(chunk_tvb, CHUNK_LENGTH_OFFSET) - INIT_CHUNK_FIXED_PARAMTERS_LENGTH - CHUNK_HEADER_LENGTH;
+ parameters_tvb = tvb_new_subset(chunk_tvb, INIT_CHUNK_VARIABLE_LENGTH_PARAMETER_OFFSET, parameters_length, parameters_length);
+ dissect_parameters(parameters_tvb, pinfo, chunk_tree, NULL, TRUE);
+
+ proto_item_append_text(chunk_item, " (Outbound streams: %u, inbound streams: %u)",
+ tvb_get_ntohs(chunk_tvb, INIT_CHUNK_NUMBER_OF_OUTBOUND_STREAMS_OFFSET),
+ tvb_get_ntohs(chunk_tvb, INIT_CHUNK_NUMBER_OF_INBOUND_STREAMS_OFFSET));
+ }
}
+#define SACK_CHUNK_CUMULATIVE_TSN_ACK_LENGTH 4
+#define SACK_CHUNK_ADV_REC_WINDOW_CREDIT_LENGTH 4
+#define SACK_CHUNK_NUMBER_OF_GAP_BLOCKS_LENGTH 2
+#define SACK_CHUNK_NUMBER_OF_DUP_TSNS_LENGTH 2
+#define SACK_CHUNK_GAP_BLOCK_LENGTH 4
+#define SACK_CHUNK_GAP_BLOCK_START_LENGTH 2
+#define SACK_CHUNK_GAP_BLOCK_END_LENGTH 2
+#define SACK_CHUNK_DUP_TSN_LENGTH 4
+
+#define SACK_CHUNK_CUMULATIVE_TSN_ACK_OFFSET (CHUNK_VALUE_OFFSET + 0)
+#define SACK_CHUNK_ADV_REC_WINDOW_CREDIT_OFFSET (SACK_CHUNK_CUMULATIVE_TSN_ACK_OFFSET + \
+ SACK_CHUNK_CUMULATIVE_TSN_ACK_LENGTH)
+#define SACK_CHUNK_NUMBER_OF_GAP_BLOCKS_OFFSET (SACK_CHUNK_ADV_REC_WINDOW_CREDIT_OFFSET + \
+ SACK_CHUNK_ADV_REC_WINDOW_CREDIT_LENGTH)
+#define SACK_CHUNK_NUMBER_OF_DUP_TSNS_OFFSET (SACK_CHUNK_NUMBER_OF_GAP_BLOCKS_OFFSET + \
+ SACK_CHUNK_NUMBER_OF_GAP_BLOCKS_LENGTH)
+#define SACK_CHUNK_GAP_BLOCK_OFFSET (SACK_CHUNK_NUMBER_OF_DUP_TSNS_OFFSET + \
+ SACK_CHUNK_NUMBER_OF_DUP_TSNS_LENGTH)
+
+
static void
-dissect_sack_chunk(tvbuff_t *chunk_tvb, packet_info *pinfo,
- proto_tree *chunk_tree, proto_item *chunk_item)
+dissect_sack_chunk(tvbuff_t *chunk_tvb, proto_tree *chunk_tree, proto_item *chunk_item)
{
- guint32 cumulative_tsn_ack, adv_rec_window_credit, dup_tsn;
guint16 number_of_gap_blocks, number_of_dup_tsns;
guint16 gap_block_number, dup_tsn_number, start, end;
gint gap_block_offset, dup_tsn_offset;
+ guint32 cum_tsn_ack;
proto_item *block_item;
proto_tree *block_tree;
-
- if (check_col(pinfo->cinfo, COL_INFO))
- col_append_str(pinfo->cinfo, 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,
- 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);
+ proto_tree_add_item(chunk_tree, hf_sack_chunk_cumulative_tsn_ack, chunk_tvb, SACK_CHUNK_CUMULATIVE_TSN_ACK_OFFSET, SACK_CHUNK_CUMULATIVE_TSN_ACK_LENGTH, NETWORK_BYTE_ORDER);
+ proto_tree_add_item(chunk_tree, hf_sack_chunk_adv_rec_window_credit, chunk_tvb, SACK_CHUNK_ADV_REC_WINDOW_CREDIT_OFFSET, SACK_CHUNK_ADV_REC_WINDOW_CREDIT_LENGTH, NETWORK_BYTE_ORDER);
+ proto_tree_add_item(chunk_tree, hf_sack_chunk_number_of_gap_blocks, chunk_tvb, SACK_CHUNK_NUMBER_OF_GAP_BLOCKS_OFFSET, SACK_CHUNK_NUMBER_OF_GAP_BLOCKS_LENGTH, NETWORK_BYTE_ORDER);
+ proto_tree_add_item(chunk_tree, hf_sack_chunk_number_of_dup_tsns, chunk_tvb, SACK_CHUNK_NUMBER_OF_DUP_TSNS_OFFSET, SACK_CHUNK_NUMBER_OF_DUP_TSNS_LENGTH, NETWORK_BYTE_ORDER);
/* handle the gap acknowledgement blocks */
- gap_block_offset = SACK_CHUNK_GAP_BLOCK_OFFSET;
+ number_of_gap_blocks = tvb_get_ntohs(chunk_tvb, SACK_CHUNK_NUMBER_OF_GAP_BLOCKS_OFFSET);
+ gap_block_offset = SACK_CHUNK_GAP_BLOCK_OFFSET;
+ cum_tsn_ack = tvb_get_ntohl(chunk_tvb, SACK_CHUNK_CUMULATIVE_TSN_ACK_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_item = proto_tree_add_text(chunk_tree, chunk_tvb, gap_block_offset, SACK_CHUNK_GAP_BLOCK_LENGTH, "Gap Acknowledgement for TSN %u to %u", cum_tsn_ack + start, cum_tsn_ack + end);
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);
+ proto_tree_add_item(block_tree, hf_sack_chunk_gap_block_start, chunk_tvb, gap_block_offset, SACK_CHUNK_GAP_BLOCK_START_LENGTH, NETWORK_BYTE_ORDER);
+ proto_tree_add_item(block_tree, hf_sack_chunk_gap_block_end, chunk_tvb, gap_block_offset + SACK_CHUNK_GAP_BLOCK_START_LENGTH, SACK_CHUNK_GAP_BLOCK_END_LENGTH, NETWORK_BYTE_ORDER);
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;
+ number_of_dup_tsns = tvb_get_ntohs(chunk_tvb, SACK_CHUNK_NUMBER_OF_DUP_TSNS_OFFSET);
+ 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);
+ proto_tree_add_item(chunk_tree, hf_sack_chunk_duplicate_tsn, chunk_tvb, dup_tsn_offset, SACK_CHUNK_DUP_TSN_LENGTH, NETWORK_BYTE_ORDER);
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"));
+ proto_item_append_text(chunk_item, " (Cumulative TSN: %u, a_rwnd: %u, gaps: %u, duplicate TSNs: %u)",
+ tvb_get_ntohl(chunk_tvb, SACK_CHUNK_CUMULATIVE_TSN_ACK_OFFSET),
+ tvb_get_ntohl(chunk_tvb, SACK_CHUNK_ADV_REC_WINDOW_CREDIT_OFFSET),
+ number_of_gap_blocks, number_of_dup_tsns);
}
}
+#define HEARTBEAT_CHUNK_INFO_OFFSET CHUNK_VALUE_OFFSET
+
static void
-dissect_heartbeat_chunk(tvbuff_t *chunk_tvb, packet_info *pinfo,
- proto_tree *chunk_tree, proto_item *chunk_item)
+dissect_heartbeat_chunk(tvbuff_t *chunk_tvb, packet_info *pinfo, proto_tree *chunk_tree, proto_item *chunk_item)
{
tvbuff_t *parameter_tvb;
- guint chunk_length, info_length, padding_length, total_length;
-
- if (check_col(pinfo->cinfo, COL_INFO))
- col_append_str(pinfo->cinfo, COL_INFO, "HEARTBEAT ");
+ guint info_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);
-
- dissect_parameter(parameter_tvb, pinfo, chunk_tree);
-
- proto_item_set_text(chunk_item, "HEARTBEAT chunk");
+ info_length = tvb_get_ntohs(chunk_tvb, CHUNK_LENGTH_OFFSET) - CHUNK_HEADER_LENGTH;
+ proto_item_append_text(chunk_item, " (Information: %u byte%s)", info_length, plurality(info_length, "", "s"));
+ parameter_tvb = tvb_new_subset(chunk_tvb, HEARTBEAT_CHUNK_INFO_OFFSET, info_length, info_length);
+ /* FIXME: Parameters or parameter? */
+ dissect_parameter(parameter_tvb, pinfo, chunk_tree, NULL, FALSE);
}
}
static void
-dissect_heartbeat_ack_chunk(tvbuff_t *chunk_tvb, packet_info *pinfo,
- proto_tree *chunk_tree, proto_item *chunk_item)
+dissect_heartbeat_ack_chunk(tvbuff_t *chunk_tvb, packet_info *pinfo, proto_tree *chunk_tree, proto_item *chunk_item)
{
tvbuff_t *parameter_tvb;
- guint chunk_length, info_length, padding_length, total_length;
-
- if (check_col(pinfo->cinfo, COL_INFO))
- col_append_str(pinfo->cinfo, COL_INFO, "HEARTBEAT_ACK ");
+ guint info_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);
-
- dissect_parameter(parameter_tvb, pinfo, chunk_tree);
-
- proto_item_set_text(chunk_item, "HEARTBEAT ACK chunk");
+ info_length = tvb_get_ntohs(chunk_tvb, CHUNK_LENGTH_OFFSET) - CHUNK_HEADER_LENGTH;
+ proto_item_append_text(chunk_item, " (Information: %u byte%s)", info_length, plurality(info_length, "", "s"));
+ parameter_tvb = tvb_new_subset(chunk_tvb, HEARTBEAT_CHUNK_INFO_OFFSET, info_length, info_length);
+ /* FIXME: Parameters or parameter? */
+ dissect_parameter(parameter_tvb, pinfo, chunk_tree, NULL, FALSE);
}
}
+#define ABORT_CHUNK_FIRST_ERROR_CAUSE_OFFSET 4
static void
-dissect_abort_chunk(tvbuff_t *chunk_tvb, packet_info *pinfo, proto_tree *chunk_tree, proto_item *chunk_item, proto_item *flags_item)
+dissect_abort_chunk(tvbuff_t *chunk_tvb, packet_info *pinfo, proto_tree *chunk_tree, proto_item *flags_item)
{
- guint8 flags;
- guint offset, number_of_causes;
- guint16 length, padding_length, total_length;
- tvbuff_t *cause_tvb;
- proto_tree *flag_tree;
- if (check_col(pinfo->cinfo, COL_INFO))
- col_append_str(pinfo->cinfo, COL_INFO, "ABORT ");
-
+ guint16 causes_length;
+ tvbuff_t *causes_tvb;
+ proto_tree *flags_tree;
+
if (chunk_tree) {
- flags = tvb_get_guint8(chunk_tvb, CHUNK_FLAGS_OFFSET);
- flag_tree = proto_item_add_subtree(flags_item, ett_sctp_abort_chunk_flags);
- proto_tree_add_boolean(flag_tree, hf_sctp_abort_chunk_t_bit, chunk_tvb, CHUNK_FLAGS_OFFSET, CHUNK_FLAGS_LENGTH, flags);
-
- number_of_causes = 0;
- offset = ABORT_CHUNK_FIRST_ERROR_CAUSE_OFFSET;
- while(tvb_reported_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;
- /* 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++;
- };
+ flags_tree = proto_item_add_subtree(flags_item, ett_sctp_abort_chunk_flags);
+ proto_tree_add_item(flags_tree, hf_abort_chunk_t_bit, chunk_tvb, CHUNK_FLAGS_OFFSET, CHUNK_FLAGS_LENGTH, NETWORK_BYTE_ORDER);
- proto_item_set_text(chunk_item, "Abort chunk with %u cause%s", number_of_causes, plurality(number_of_causes, "", "s"));
+ causes_length = tvb_get_ntohs(chunk_tvb, CHUNK_LENGTH_OFFSET) - CHUNK_HEADER_LENGTH;
+ causes_tvb = tvb_new_subset(chunk_tvb, CHUNK_VALUE_OFFSET, causes_length, causes_length);
+ dissect_error_causes(causes_tvb, pinfo, chunk_tree);
}
}
+#define SHUTDOWN_CHUNK_CUMULATIVE_TSN_ACK_OFFSET CHUNK_VALUE_OFFSET
+#define SHUTDOWN_CHUNK_CUMULATIVE_TSN_ACK_LENGTH 4
+
static void
-dissect_shutdown_chunk(tvbuff_t *chunk_tvb, packet_info *pinfo,
- proto_tree *chunk_tree, proto_item *chunk_item)
+dissect_shutdown_chunk(tvbuff_t *chunk_tvb, proto_tree *chunk_tree, proto_item *chunk_item)
{
- guint32 cumulative_tsn_ack;
-
- if (check_col(pinfo->cinfo, COL_INFO))
- col_append_str(pinfo->cinfo, COL_INFO, "SHUTDOWN ");
-
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);
+ proto_tree_add_item(chunk_tree, hf_shutdown_chunk_cumulative_tsn_ack, chunk_tvb, SHUTDOWN_CHUNK_CUMULATIVE_TSN_ACK_OFFSET, SHUTDOWN_CHUNK_CUMULATIVE_TSN_ACK_LENGTH, NETWORK_BYTE_ORDER);
+ proto_item_append_text(chunk_item, " (Cumulative TSN ack: %u)", tvb_get_ntohl(chunk_tvb, SHUTDOWN_CHUNK_CUMULATIVE_TSN_ACK_OFFSET));
}
}
static void
-dissect_shutdown_ack_chunk(packet_info *pinfo,
- proto_tree *chunk_tree, proto_item *chunk_item)
+dissect_shutdown_ack_chunk(tvbuff_t *chunk_tvb _U_)
{
- if (check_col(pinfo->cinfo, COL_INFO))
- col_append_str(pinfo->cinfo, COL_INFO, "SHUTDOWN_ACK ");
-
- if (chunk_tree) {
- proto_item_set_text(chunk_item, "SHUTDOWN ACK chunk");
- }
}
+#define ERROR_CAUSE_IND_CAUSES_OFFSET CHUNK_VALUE_OFFSET
+
static void
-dissect_error_chunk(tvbuff_t *chunk_tvb, packet_info *pinfo,
- proto_tree *chunk_tree, proto_item *chunk_item)
+dissect_error_chunk(tvbuff_t *chunk_tvb, packet_info *pinfo, proto_tree *chunk_tree)
{
- guint offset, number_of_causes;
- guint16 length, padding_length, total_length;
- tvbuff_t *cause_tvb;
-
- if (check_col(pinfo->cinfo, COL_INFO))
- col_append_str(pinfo->cinfo, COL_INFO, "ERROR ");
+ guint16 causes_length;
+ tvbuff_t *causes_tvb;
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_reported_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"));
+ causes_length = tvb_get_ntohs(chunk_tvb, CHUNK_LENGTH_OFFSET) - CHUNK_HEADER_LENGTH;
+ causes_tvb = tvb_new_subset(chunk_tvb, ERROR_CAUSE_IND_CAUSES_OFFSET, causes_length, causes_length);
+ dissect_error_causes(causes_tvb, pinfo, chunk_tree);
}
}
+#define COOKIE_OFFSET CHUNK_VALUE_OFFSET
+
static void
-dissect_cookie_echo_chunk(tvbuff_t *chunk_tvb, packet_info *pinfo,
- proto_tree *chunk_tree, proto_item *chunk_item)
+dissect_cookie_echo_chunk(tvbuff_t *chunk_tvb, proto_tree *chunk_tree, proto_item *chunk_item)
{
- guint length, cookie_length, padding_length;
-
- length = tvb_get_ntohs(chunk_tvb, CHUNK_LENGTH_OFFSET);
- padding_length = nr_of_padding_bytes(length);
- cookie_length = length - CHUNK_HEADER_LENGTH;
-
- if (check_col(pinfo->cinfo, COL_INFO))
- col_append_str(pinfo->cinfo, COL_INFO, "COOKIE_ECHO ");
+ guint cookie_length;
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"));
+ cookie_length = tvb_get_ntohs(chunk_tvb, CHUNK_LENGTH_OFFSET) - CHUNK_HEADER_LENGTH;
+ proto_tree_add_item(chunk_tree, hf_cookie, chunk_tvb, COOKIE_OFFSET, cookie_length, NETWORK_BYTE_ORDER);
+ proto_item_append_text(chunk_item, " (Cookie length: %u byte%s)", cookie_length, plurality(cookie_length, "", "s"));
}
}
static void
-dissect_cookie_ack_chunk(packet_info *pinfo,
- proto_tree *chunk_tree, proto_item *chunk_item)
+dissect_cookie_ack_chunk(tvbuff_t *chunk_tvb _U_)
{
- if (check_col(pinfo->cinfo, COL_INFO))
- col_append_str(pinfo->cinfo, COL_INFO, "COOKIE_ACK ");
-
- if (chunk_tree) {
- proto_item_set_text(chunk_item, "COOKIE ACK chunk");
- }
}
+#define ECNE_CHUNK_LOWEST_TSN_OFFSET CHUNK_VALUE_OFFSET
+#define ECNE_CHUNK_LOWEST_TSN_LENGTH 4
+
static void
-dissect_ecne_chunk(tvbuff_t *chunk_tvb, packet_info *pinfo,
- proto_tree *chunk_tree, proto_item *chunk_item)
+dissect_ecne_chunk(tvbuff_t *chunk_tvb, proto_tree *chunk_tree, proto_item *chunk_item)
{
- guint32 lowest_tsn;
-
- if (check_col(pinfo->cinfo, COL_INFO))
- col_append_str(pinfo->cinfo, COL_INFO, "ECNE ");
-
- 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");
- }
+ if (chunk_tree)
+ proto_tree_add_item(chunk_tree, hf_ecne_chunk_lowest_tsn, chunk_tvb, ECNE_CHUNK_LOWEST_TSN_OFFSET, ECNE_CHUNK_LOWEST_TSN_LENGTH, NETWORK_BYTE_ORDER);
+ proto_item_append_text(chunk_item, " (Lowest TSN: %u)", tvb_get_ntohl(chunk_tvb, ECNE_CHUNK_LOWEST_TSN_OFFSET));
}
+#define CWR_CHUNK_LOWEST_TSN_OFFSET CHUNK_VALUE_OFFSET
+#define CWR_CHUNK_LOWEST_TSN_LENGTH 4
+
static void
-dissect_cwr_chunk(tvbuff_t *chunk_tvb, packet_info *pinfo,
- proto_tree *chunk_tree, proto_item *chunk_item)
+dissect_cwr_chunk(tvbuff_t *chunk_tvb, proto_tree *chunk_tree, proto_item *chunk_item)
{
- guint32 lowest_tsn;
+ if (chunk_tree)
+ proto_tree_add_item(chunk_tree, hf_cwr_chunk_lowest_tsn, chunk_tvb, CWR_CHUNK_LOWEST_TSN_OFFSET, CWR_CHUNK_LOWEST_TSN_LENGTH, NETWORK_BYTE_ORDER);
+ proto_item_append_text(chunk_item, " (Lowest TSN: %u)", tvb_get_ntohl(chunk_tvb, CWR_CHUNK_LOWEST_TSN_OFFSET));
+}
- if (check_col(pinfo->cinfo, COL_INFO))
- col_append_str(pinfo->cinfo, COL_INFO, "CWR ");
+#define SCTP_SHUTDOWN_COMPLETE_CHUNK_T_BIT 0x01
- 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");
- }
-}
+static const true_false_string sctp_shutdown_complete_chunk_t_bit_value = {
+ "No TCB destroyed",
+ "TCB destroyed"
+};
+
static void
-dissect_shutdown_complete_chunk(tvbuff_t *chunk_tvb, packet_info *pinfo,
- proto_tree *chunk_tree, proto_item *chunk_item, proto_item *flags_item)
+dissect_shutdown_complete_chunk(tvbuff_t *chunk_tvb, proto_tree *chunk_tree, proto_item *flags_item)
{
- guint8 flags;
- guint16 length;
- proto_tree *flag_tree;
-
- if (check_col(pinfo->cinfo, COL_INFO))
- col_append_str(pinfo->cinfo, COL_INFO, "SHUTDOWN_COMPLETE ");
-
+ proto_tree *flags_tree;
+
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_shutdown_complete_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");
+ flags_tree = proto_item_add_subtree(flags_item, ett_sctp_shutdown_complete_chunk_flags);
+ proto_tree_add_item(flags_tree, hf_shutdown_complete_chunk_t_bit, chunk_tvb, CHUNK_FLAGS_OFFSET, CHUNK_FLAGS_LENGTH, NETWORK_BYTE_ORDER);
}
}
#define FORWARD_TSN_CHUNK_SSN_OFFSET (FORWARD_TSN_CHUNK_SID_OFFSET + FORWARD_TSN_CHUNK_SID_LENGTH)
static void
-dissect_forward_tsn_chunk(tvbuff_t *chunk_tvb, packet_info *pinfo, proto_tree *chunk_tree, proto_item *chunk_item)
+dissect_forward_tsn_chunk(tvbuff_t *chunk_tvb, proto_tree *chunk_tree, proto_item *chunk_item)
{
- guint32 tsn;
guint offset;
- guint16 number_of_affected_streams, affected_stream, length, sid, ssn;
-
- if (check_col(pinfo->cinfo, COL_INFO))
- col_append_str(pinfo->cinfo, COL_INFO, "FORWARD TSN ");
+ guint16 number_of_affected_streams, affected_stream, length;
if (chunk_tree) {
- tsn = tvb_get_ntohl(chunk_tvb, FORWARD_TSN_CHUNK_TSN_OFFSET);
- proto_tree_add_uint(chunk_tree, hf_sctp_forward_tsn_chunk_tsn, chunk_tvb, FORWARD_TSN_CHUNK_TSN_OFFSET, FORWARD_TSN_CHUNK_TSN_LENGTH, tsn);
+ proto_tree_add_item(chunk_tree, hf_forward_tsn_chunk_tsn, chunk_tvb, FORWARD_TSN_CHUNK_TSN_OFFSET, FORWARD_TSN_CHUNK_TSN_LENGTH, NETWORK_BYTE_ORDER);
length = tvb_get_ntohs(chunk_tvb, CHUNK_LENGTH_OFFSET);
number_of_affected_streams = (length - CHUNK_HEADER_LENGTH - FORWARD_TSN_CHUNK_TSN_LENGTH) /
(FORWARD_TSN_CHUNK_SID_LENGTH + FORWARD_TSN_CHUNK_SSN_LENGTH);
offset = CHUNK_VALUE_OFFSET + FORWARD_TSN_CHUNK_TSN_LENGTH;
for(affected_stream = 0; affected_stream < number_of_affected_streams; affected_stream++) {
- sid = tvb_get_ntohs(chunk_tvb, offset + FORWARD_TSN_CHUNK_SID_OFFSET);
- ssn = tvb_get_ntohs(chunk_tvb, offset + FORWARD_TSN_CHUNK_SSN_OFFSET);
- proto_tree_add_uint(chunk_tree, hf_sctp_forward_tsn_chunk_sid,
- chunk_tvb, offset + FORWARD_TSN_CHUNK_SID_OFFSET, FORWARD_TSN_CHUNK_SID_LENGTH, sid);
- proto_tree_add_uint(chunk_tree, hf_sctp_forward_tsn_chunk_ssn,
- chunk_tvb, offset + FORWARD_TSN_CHUNK_SSN_OFFSET, FORWARD_TSN_CHUNK_SSN_LENGTH, ssn);
+ proto_tree_add_item(chunk_tree, hf_forward_tsn_chunk_sid, chunk_tvb, offset + FORWARD_TSN_CHUNK_SID_OFFSET, FORWARD_TSN_CHUNK_SID_LENGTH, NETWORK_BYTE_ORDER);
+ proto_tree_add_item(chunk_tree, hf_forward_tsn_chunk_ssn, chunk_tvb, offset + FORWARD_TSN_CHUNK_SSN_OFFSET, FORWARD_TSN_CHUNK_SSN_LENGTH, NETWORK_BYTE_ORDER);
offset = offset + (FORWARD_TSN_CHUNK_SID_LENGTH + FORWARD_TSN_CHUNK_SSN_LENGTH);
}
- proto_item_set_text(chunk_item, "FORWARD TSN chunk (new cumulative TSN %u)", tsn);
+ proto_item_append_text(chunk_item, "(Cumulative TSN: %u)", tvb_get_ntohl(chunk_tvb, FORWARD_TSN_CHUNK_TSN_OFFSET));
}
}
#define SERIAL_NUMBER_LENGTH 4
#define SERIAL_NUMBER_OFFSET PARAMETER_VALUE_OFFSET
+#define ASCONF_CHUNK_PARAMETERS_OFFSET (SERIAL_NUMBER_OFFSET + SERIAL_NUMBER_LENGTH)
static void
-dissect_asconf_chunk(tvbuff_t *chunk_tvb, packet_info *pinfo, proto_tree *chunk_tree, proto_item *chunk_item)
+dissect_asconf_chunk(tvbuff_t *chunk_tvb, packet_info *pinfo, proto_tree *chunk_tree)
{
- guint32 serial_number;
- guint offset, length, padding_length, total_length;
- tvbuff_t *parameter_tvb;
-
- if (check_col(pinfo->cinfo, COL_INFO))
- col_append_str(pinfo->cinfo, COL_INFO, "ASCONF ");
+ guint parameters_length;
+ tvbuff_t *parameters_tvb;
if (chunk_tree) {
- offset = SERIAL_NUMBER_OFFSET;
- serial_number = tvb_get_ntohl(chunk_tvb, offset);
- proto_tree_add_uint(chunk_tree, hf_sctp_asconf_serial, chunk_tvb, offset, SERIAL_NUMBER_LENGTH, serial_number);
- offset += SERIAL_NUMBER_LENGTH;
- proto_item_set_text(chunk_item, "ASCONF chunk");
-
- while(tvb_reported_length_remaining(chunk_tvb, offset)) {
- length = tvb_get_ntohs(chunk_tvb, offset + PARAMETER_LENGTH_OFFSET);
- padding_length = nr_of_padding_bytes(length);
- total_length = length + padding_length;
- /* create a tvb for the chunk including the padding bytes */
- parameter_tvb = tvb_new_subset(chunk_tvb, offset, total_length, total_length);
- dissect_parameter(parameter_tvb, pinfo, chunk_tree);
- /* get rid of the handled parameter */
- offset += total_length;
- }
+ proto_tree_add_item(chunk_tree, hf_asconf_serial, chunk_tvb, SERIAL_NUMBER_OFFSET, SERIAL_NUMBER_LENGTH, NETWORK_BYTE_ORDER);
+ parameters_length = tvb_get_ntohs(chunk_tvb, CHUNK_LENGTH_OFFSET) - CHUNK_HEADER_LENGTH - SERIAL_NUMBER_LENGTH;
+ parameters_tvb = tvb_new_subset(chunk_tvb, ASCONF_CHUNK_PARAMETERS_OFFSET, parameters_length, parameters_length);
+ dissect_parameters(parameters_tvb, pinfo, chunk_tree, NULL, FALSE);
}
}
+#define ASCONF_ACK_CHUNK_PARAMETERS_OFFSET (SERIAL_NUMBER_OFFSET + SERIAL_NUMBER_LENGTH)
+
static void
-dissect_asconf_ack_chunk(tvbuff_t *chunk_tvb, packet_info *pinfo, proto_tree *chunk_tree, proto_item *chunk_item)
+dissect_asconf_ack_chunk(tvbuff_t *chunk_tvb, packet_info *pinfo, proto_tree *chunk_tree)
{
- guint32 serial_number;
- guint offset, length, padding_length, total_length;
- tvbuff_t *parameter_tvb;
-
- if (check_col(pinfo->cinfo, COL_INFO))
- col_append_str(pinfo->cinfo, COL_INFO, "ASCONF-ACK ");
+ guint parameters_length;
+ tvbuff_t *parameters_tvb;
if (chunk_tree) {
- serial_number = tvb_get_ntohl(chunk_tvb, SERIAL_NUMBER_OFFSET);
- proto_tree_add_uint(chunk_tree, hf_sctp_asconf_ack_serial, chunk_tvb, SERIAL_NUMBER_OFFSET, SERIAL_NUMBER_LENGTH, serial_number);
- proto_item_set_text(chunk_item, "ASCONF-ACK chunk");
-
- offset = SERIAL_NUMBER_OFFSET + SERIAL_NUMBER_LENGTH;
- while(tvb_reported_length_remaining(chunk_tvb, offset)) {
- length = tvb_get_ntohs(chunk_tvb, offset + PARAMETER_LENGTH_OFFSET);
- padding_length = nr_of_padding_bytes(length);
- total_length = length + padding_length;
- /* create a tvb for the chunk including the padding bytes */
- parameter_tvb = tvb_new_subset(chunk_tvb, offset, total_length, total_length);
- dissect_parameter(parameter_tvb, pinfo, chunk_tree);
- /* get rid of the handled parameter */
- offset += total_length;
- }
+ proto_tree_add_item(chunk_tree, hf_asconf_ack_serial, chunk_tvb, SERIAL_NUMBER_OFFSET, SERIAL_NUMBER_LENGTH, NETWORK_BYTE_ORDER);
+ parameters_length = tvb_get_ntohs(chunk_tvb, CHUNK_LENGTH_OFFSET) - CHUNK_HEADER_LENGTH - SERIAL_NUMBER_LENGTH;
+ parameters_tvb = tvb_new_subset(chunk_tvb, ASCONF_ACK_CHUNK_PARAMETERS_OFFSET, parameters_length, parameters_length);
+ dissect_parameters(parameters_tvb, pinfo, chunk_tree, NULL, FALSE);
}
}
+#define PKTDROP_CHUNK_BANDWIDTH_LENGTH 4
+#define PKTDROP_CHUNK_QUEUESIZE_LENGTH 4
+#define PKTDROP_CHUNK_TRUNCATED_SIZE_LENGTH 2
+#define PKTDROP_CHUNK_RESERVED_SIZE_LENGTH 2
+
+#define PKTDROP_CHUNK_HEADER_LENGTH (CHUNK_HEADER_LENGTH + \
+ PKTDROP_CHUNK_BANDWIDTH_LENGTH + \
+ PKTDROP_CHUNK_QUEUESIZE_LENGTH + \
+ PKTDROP_CHUNK_TRUNCATED_SIZE_LENGTH + \
+ PKTDROP_CHUNK_RESERVED_SIZE_LENGTH)
+
+#define PKTDROP_CHUNK_BANDWIDTH_OFFSET CHUNK_VALUE_OFFSET
+#define PKTDROP_CHUNK_QUEUESIZE_OFFSET (PKTDROP_CHUNK_BANDWIDTH_OFFSET + PKTDROP_CHUNK_BANDWIDTH_LENGTH)
+#define PKTDROP_CHUNK_TRUNCATED_SIZE_OFFSET (PKTDROP_CHUNK_QUEUESIZE_OFFSET + PKTDROP_CHUNK_QUEUESIZE_LENGTH)
+#define PKTDROP_CHUNK_RESERVED_SIZE_OFFSET (PKTDROP_CHUNK_TRUNCATED_SIZE_OFFSET + PKTDROP_CHUNK_TRUNCATED_SIZE_LENGTH)
+#define PKTDROP_CHUNK_DATA_FIELD_OFFSET (PKTDROP_CHUNK_RESERVED_SIZE_OFFSET + PKTDROP_CHUNK_RESERVED_SIZE_LENGTH)
+
+#define SCTP_PKTDROP_CHUNK_M_BIT 0x01
+#define SCTP_PKTDROP_CHUNK_B_BIT 0x02
+#define SCTP_PKTDROP_CHUNK_T_BIT 0x04
+
+static const true_false_string sctp_pktdropk_m_bit_value = {
+ "Source is a middlebox",
+ "Source is an endhost"
+};
+
+/*
+static const true_false_string sctp_pktdropk_s_bit_value = {
+ "This is a summary",
+ "This is not a summary"
+};
+*/
+
+static const true_false_string sctp_pktdropk_b_bit_value = {
+ "SCTP checksum was incorrect",
+ "SCTP checksum was correct"
+};
+
+static const true_false_string sctp_pktdropk_t_bit_value = {
+ "Packet is truncated",
+ "Packet is not truncated"
+};
+
static void
-dissect_unknown_chunk(tvbuff_t *chunk_tvb, packet_info *pinfo,
- proto_tree *chunk_tree, proto_item *chunk_item)
+dissect_pktdrop_chunk(tvbuff_t *chunk_tvb, packet_info *pinfo, proto_tree *chunk_tree, proto_item *flags_item)
{
- guint length, chunk_value_length, padding_length;
- guint8 type;
+ guint16 data_field_length;
+ tvbuff_t *data_field_tvb;
+ proto_tree *flags_tree;
- if (check_col(pinfo->cinfo, COL_INFO))
- col_append_str(pinfo->cinfo, COL_INFO, "UNKNOWN ");
+ data_field_length = tvb_get_ntohs(chunk_tvb, CHUNK_LENGTH_OFFSET) - PKTDROP_CHUNK_HEADER_LENGTH;
+ data_field_tvb = tvb_new_subset(chunk_tvb, PKTDROP_CHUNK_DATA_FIELD_OFFSET, data_field_length, data_field_length);
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;
+ flags_tree = proto_item_add_subtree(flags_item, ett_sctp_pktdrop_chunk_flags);
- 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"));
+ proto_tree_add_item(flags_tree, hf_pktdrop_chunk_m_bit, chunk_tvb, CHUNK_FLAGS_OFFSET, CHUNK_FLAGS_LENGTH, NETWORK_BYTE_ORDER);
+/*
+ proto_tree_add_item(flags_tree, hf_pktdrop_chunk_s_bit, chunk_tvb, CHUNK_FLAGS_OFFSET, CHUNK_FLAGS_LENGTH, NETWORK_BYTE_ORDER);
+*/
+ proto_tree_add_item(flags_tree, hf_pktdrop_chunk_b_bit, chunk_tvb, CHUNK_FLAGS_OFFSET, CHUNK_FLAGS_LENGTH, NETWORK_BYTE_ORDER);
+ proto_tree_add_item(flags_tree, hf_pktdrop_chunk_t_bit, chunk_tvb, CHUNK_FLAGS_OFFSET, CHUNK_FLAGS_LENGTH, NETWORK_BYTE_ORDER);
+ proto_tree_add_item(chunk_tree, hf_pktdrop_chunk_bandwidth, chunk_tvb, PKTDROP_CHUNK_BANDWIDTH_OFFSET, PKTDROP_CHUNK_BANDWIDTH_LENGTH, NETWORK_BYTE_ORDER);
+ proto_tree_add_item(chunk_tree, hf_pktdrop_chunk_queuesize, chunk_tvb, PKTDROP_CHUNK_QUEUESIZE_OFFSET, PKTDROP_CHUNK_QUEUESIZE_LENGTH, NETWORK_BYTE_ORDER);
+ proto_tree_add_item(chunk_tree, hf_pktdrop_chunk_truncated_length, chunk_tvb, PKTDROP_CHUNK_TRUNCATED_SIZE_OFFSET, PKTDROP_CHUNK_TRUNCATED_SIZE_LENGTH, NETWORK_BYTE_ORDER);
+ proto_tree_add_item(chunk_tree, hf_pktdrop_chunk_reserved, chunk_tvb, PKTDROP_CHUNK_RESERVED_SIZE_OFFSET, PKTDROP_CHUNK_RESERVED_SIZE_LENGTH, NETWORK_BYTE_ORDER);
+ if (tvb_get_guint8(chunk_tvb, CHUNK_FLAGS_OFFSET) & SCTP_PKTDROP_CHUNK_T_BIT)
+ proto_tree_add_item(chunk_tree, hf_pktdrop_chunk_data_field, chunk_tvb, PKTDROP_CHUNK_DATA_FIELD_OFFSET, data_field_length, NETWORK_BYTE_ORDER);
+ else
+ dissect_sctp_packet(data_field_tvb, pinfo, chunk_tree, TRUE);
+ }
+}
- 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"));
+static void
+dissect_unknown_chunk(tvbuff_t *chunk_tvb, proto_tree *chunk_tree, proto_item *chunk_item)
+{
+ guint chunk_value_length;
- 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 (chunk_tree) {
+ chunk_value_length = tvb_get_ntohs(chunk_tvb, CHUNK_LENGTH_OFFSET) - CHUNK_HEADER_LENGTH;
+ if (chunk_value_length > 0)
+ proto_tree_add_item(chunk_tree, hf_chunk_value, chunk_tvb, CHUNK_VALUE_OFFSET, chunk_value_length, NETWORK_BYTE_ORDER);
+ proto_item_append_text(chunk_item, " (Type: %u, value length: %u byte%s)", tvb_get_guint8(chunk_tvb, CHUNK_TYPE_OFFSET), chunk_value_length, plurality(chunk_value_length, "", "s"));
}
}
+#define SCTP_CHUNK_BIT_1 0x80
+#define SCTP_CHUNK_BIT_2 0x40
+
+static const true_false_string sctp_chunk_bit_1_value = {
+ "Skip chunk and continue processing of the packet",
+ "Stop processing of the packet"
+};
+
+static const true_false_string sctp_chunk_bit_2_value = {
+ "Do report",
+ "Do not report"
+};
+
static gboolean
-dissect_sctp_chunk(tvbuff_t *chunk_tvb, packet_info *pinfo, proto_tree *tree, proto_tree *sctp_tree)
+dissect_sctp_chunk(tvbuff_t *chunk_tvb, packet_info *pinfo, proto_tree *tree, proto_tree *sctp_tree, gboolean useinfo)
{
guint8 type, flags;
- guint16 length;
+ guint16 length, padding_length;
gboolean result;
proto_item *flags_item;
proto_item *chunk_item;
proto_tree *chunk_tree;
+ proto_item *type_item;
+ proto_tree *type_tree;
result = FALSE;
/* first extract the chunk header */
- 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);
+ 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);
+ padding_length = tvb_length(chunk_tvb) - length;
+ if (useinfo && (check_col(pinfo->cinfo, COL_INFO)))
+ col_append_fstr(pinfo->cinfo, COL_INFO, "%s ", val_to_str(type, chunk_type_values, "RESERVED"));
+
if (tree) {
/* create proto_tree stuff */
- chunk_item = proto_tree_add_text(sctp_tree, chunk_tvb, CHUNK_HEADER_OFFSET, -1, "Incomplete chunk");
+ chunk_item = proto_tree_add_text(sctp_tree, chunk_tvb, CHUNK_HEADER_OFFSET, tvb_length(chunk_tvb), "%s chunk", val_to_str(type, chunk_type_values, "RESERVED"));
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(chunk_tree, hf_sctp_chunk_type, chunk_tvb, CHUNK_TYPE_OFFSET, CHUNK_TYPE_LENGTH, type);
- 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);
+ type_item = proto_tree_add_item(chunk_tree, hf_chunk_type, chunk_tvb, CHUNK_TYPE_OFFSET, CHUNK_TYPE_LENGTH, NETWORK_BYTE_ORDER);
+ type_tree = proto_item_add_subtree(type_item, ett_sctp_chunk_type);
+ proto_tree_add_item(type_tree, hf_chunk_bit_1, chunk_tvb, CHUNK_TYPE_OFFSET, CHUNK_TYPE_LENGTH, NETWORK_BYTE_ORDER);
+ proto_tree_add_item(type_tree, hf_chunk_bit_2, chunk_tvb, CHUNK_TYPE_OFFSET, CHUNK_TYPE_LENGTH, NETWORK_BYTE_ORDER);
+ flags_item = proto_tree_add_item(chunk_tree, hf_chunk_flags, chunk_tvb, CHUNK_FLAGS_OFFSET, CHUNK_FLAGS_LENGTH, NETWORK_BYTE_ORDER);
+ proto_tree_add_item(chunk_tree, hf_chunk_length, chunk_tvb, CHUNK_LENGTH_OFFSET, CHUNK_LENGTH_LENGTH, NETWORK_BYTE_ORDER);
} else {
chunk_tree = NULL;
chunk_item = NULL;
dissect_init_ack_chunk(chunk_tvb, pinfo, chunk_tree, chunk_item);
break;
case SCTP_SACK_CHUNK_ID:
- dissect_sack_chunk(chunk_tvb, pinfo, chunk_tree, chunk_item);
+ dissect_sack_chunk(chunk_tvb, chunk_tree, chunk_item);
break;
case SCTP_HEARTBEAT_CHUNK_ID:
dissect_heartbeat_chunk(chunk_tvb, pinfo, chunk_tree, chunk_item);
dissect_heartbeat_ack_chunk(chunk_tvb, pinfo, chunk_tree, chunk_item);
break;
case SCTP_ABORT_CHUNK_ID:
- dissect_abort_chunk(chunk_tvb, pinfo, chunk_tree, chunk_item, flags_item);
+ dissect_abort_chunk(chunk_tvb, pinfo, chunk_tree, flags_item);
break;
case SCTP_SHUTDOWN_CHUNK_ID:
- dissect_shutdown_chunk(chunk_tvb, pinfo, chunk_tree, chunk_item);
+ dissect_shutdown_chunk(chunk_tvb, chunk_tree, chunk_item);
break;
case SCTP_SHUTDOWN_ACK_CHUNK_ID:
- dissect_shutdown_ack_chunk(pinfo, chunk_tree, chunk_item);
+ dissect_shutdown_ack_chunk(chunk_tvb);
break;
case SCTP_ERROR_CHUNK_ID:
- dissect_error_chunk(chunk_tvb, pinfo, chunk_tree, chunk_item);
+ dissect_error_chunk(chunk_tvb, pinfo, chunk_tree);
break;
case SCTP_COOKIE_ECHO_CHUNK_ID:
- dissect_cookie_echo_chunk(chunk_tvb, pinfo, chunk_tree, chunk_item);
+ dissect_cookie_echo_chunk(chunk_tvb, chunk_tree, chunk_item);
break;
case SCTP_COOKIE_ACK_CHUNK_ID:
- dissect_cookie_ack_chunk(pinfo, chunk_tree, chunk_item);
+ dissect_cookie_ack_chunk(chunk_tvb);
break;
case SCTP_ECNE_CHUNK_ID:
- dissect_ecne_chunk(chunk_tvb, pinfo, chunk_tree, chunk_item);
+ dissect_ecne_chunk(chunk_tvb, chunk_tree, chunk_item);
break;
case SCTP_CWR_CHUNK_ID:
- dissect_cwr_chunk(chunk_tvb, pinfo, chunk_tree, chunk_item);
+ dissect_cwr_chunk(chunk_tvb, chunk_tree, chunk_item);
break;
case SCTP_SHUTDOWN_COMPLETE_CHUNK_ID:
- dissect_shutdown_complete_chunk(chunk_tvb, pinfo, chunk_tree, chunk_item, flags_item);
+ dissect_shutdown_complete_chunk(chunk_tvb, chunk_tree, flags_item);
break;
case SCTP_FORWARD_TSN_CHUNK_ID:
- dissect_forward_tsn_chunk(chunk_tvb, pinfo, chunk_tree, chunk_item);
+ dissect_forward_tsn_chunk(chunk_tvb, chunk_tree, chunk_item);
break;
case SCTP_ASCONF_ACK_CHUNK_ID:
- dissect_asconf_ack_chunk(chunk_tvb, pinfo, chunk_tree, chunk_item);
+ dissect_asconf_ack_chunk(chunk_tvb, pinfo, chunk_tree);
break;
case SCTP_ASCONF_CHUNK_ID:
- dissect_asconf_chunk(chunk_tvb, pinfo, chunk_tree, chunk_item);
+ dissect_asconf_chunk(chunk_tvb, pinfo, chunk_tree);
+ break;
+ case SCTP_PKTDROP_CHUNK_ID:
+ col_set_writable(pinfo->cinfo, FALSE);
+ dissect_pktdrop_chunk(chunk_tvb, pinfo, chunk_tree, flags_item);
+ col_set_writable(pinfo->cinfo, TRUE);
break;
default:
- dissect_unknown_chunk(chunk_tvb, pinfo, chunk_tree, chunk_item);
+ dissect_unknown_chunk(chunk_tvb, chunk_tree, chunk_item);
break;
- };
+ }
+
+ if (padding_length > 0)
+ proto_tree_add_item(chunk_tree, hf_chunk_padding, chunk_tvb, CHUNK_HEADER_OFFSET + length, padding_length, NETWORK_BYTE_ORDER);
+
+ if (useinfo && ((type == SCTP_DATA_CHUNK_ID) || show_always_control_chunks))
+ col_set_fence(pinfo->cinfo, COL_INFO);
+
return result;
}
static void
-dissect_sctp_chunks(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, proto_item *sctp_item, proto_tree *sctp_tree)
+dissect_sctp_chunks(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, proto_item *sctp_item, proto_tree *sctp_tree, gboolean encapsulated)
{
tvbuff_t *chunk_tvb;
- guint16 length, padding_length, total_length;
+ guint16 length, total_length, remaining_length;
gint last_offset, offset;
gboolean sctp_item_length_set;
-
+
/* the common header of the datagram is already handled */
last_offset = 0;
offset = COMMON_HEADER_LENGTH;
sctp_item_length_set = FALSE;
- while(tvb_reported_length_remaining(tvb, offset) > 0) {
+ while((remaining_length = tvb_length_remaining(tvb, offset))) {
/* extract the chunk length and compute number of padding bytes */
length = tvb_get_ntohs(tvb, offset + CHUNK_LENGTH_OFFSET);
- padding_length = nr_of_padding_bytes(length);
- total_length = length + padding_length;
+ total_length = ADD_PADDING(length);
+ if (remaining_length >= length)
+ total_length = MIN(total_length, remaining_length);
/* create a tvb for the chunk including the padding bytes */
chunk_tvb = tvb_new_subset(tvb, offset, total_length, total_length);
- /* call dissect_sctp_chunk for a actual work */
- if (dissect_sctp_chunk(chunk_tvb, pinfo, tree, sctp_tree) && (tree)) {
+
+ /* save it in the sctp_info structure */
+ if (!encapsulated) {
+ if (sctp_info.number_of_tvbs < MAXIMUM_NUMBER_OF_TVBS)
+ sctp_info.tvb[sctp_info.number_of_tvbs++] = chunk_tvb;
+ else
+ sctp_info.incomplete = TRUE;
+ }
+
+ /* call dissect_sctp_chunk for the actual work */
+ if (dissect_sctp_chunk(chunk_tvb, pinfo, tree, sctp_tree, !encapsulated) && (tree)) {
proto_item_set_len(sctp_item, offset - last_offset + DATA_CHUNK_HEADER_LENGTH);
sctp_item_length_set = TRUE;
offset += total_length;
last_offset = offset;
if (tvb_reported_length_remaining(tvb, offset) > 0) {
- sctp_item = proto_tree_add_item(tree, proto_sctp, tvb, offset, -1, FALSE);
- sctp_tree = proto_item_add_subtree(sctp_item, ett_sctp);
- sctp_item_length_set = FALSE;
+ sctp_item = proto_tree_add_item(tree, proto_sctp, tvb, offset, -1, FALSE);
+ sctp_tree = proto_item_add_subtree(sctp_item, ett_sctp);
+ sctp_item_length_set = FALSE;
}
} else {
- /* get rid of the dissected chunk */
- offset += total_length;
+ /* get rid of the dissected chunk */
+ offset += total_length;
}
- };
+ }
if (!sctp_item_length_set && (tree)) {
proto_item_set_len(sctp_item, offset - last_offset);
- };
+ }
}
-/* dissect_sctp handles the common header of a SCTP datagram.
- * For the handling of the chunks dissect_sctp_chunks is called.
- */
-
static void
-dissect_sctp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
+dissect_sctp_packet(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, gboolean encapsulated)
{
- guint16 source_port, destination_port;
- guint32 verification_tag, checksum, calculated_crc32c, calculated_adler32;
+ guint32 checksum = 0, calculated_crc32c = 0, calculated_adler32 = 0;
guint length;
- gboolean crc32c_correct, adler32_correct;
+ gboolean crc32c_correct = FALSE, adler32_correct = FALSE;
proto_item *sctp_item;
proto_tree *sctp_tree;
- /* Extract the common header */
- source_port = tvb_get_ntohs(tvb, SOURCE_PORT_OFFSET);
- destination_port = tvb_get_ntohs(tvb, DESTINATION_PORT_OFFSET);
- verification_tag = tvb_get_ntohl(tvb, VERIFICATION_TAG_OFFSET);
- checksum = tvb_get_ntohl(tvb, CHECKSUM_OFFSET);
-
- /* update pi structure */
- pinfo->ptype = PT_SCTP;
- pinfo->srcport = source_port;
- pinfo->destport = destination_port;
-
- /* make entry in the Protocol column on summary display */
- if (check_col(pinfo->cinfo, COL_PROTOCOL))
- col_set_str(pinfo->cinfo, COL_PROTOCOL, "SCTP");
-
- /* Clear entries in Info column on summary display */
- if (check_col(pinfo->cinfo, COL_INFO))
- col_add_str(pinfo->cinfo, COL_INFO, "");
-
+ length = tvb_length(tvb);
+ checksum = tvb_get_ntohl(tvb, CHECKSUM_OFFSET);
+ switch(sctp_checksum) {
+ case SCTP_CHECKSUM_NONE:
+ break;
+ case SCTP_CHECKSUM_ADLER32:
+ calculated_adler32 = sctp_adler32(tvb_get_ptr(tvb, 0, length), length);
+ adler32_correct = (checksum == calculated_adler32);
+ sctp_info.adler32_calculated = TRUE;
+ sctp_info.adler32_correct = adler32_correct;
+ break;
+ case SCTP_CHECKSUM_CRC32C:
+ calculated_crc32c = sctp_crc32c(tvb_get_ptr(tvb, 0, length), length);
+ crc32c_correct = (checksum == calculated_crc32c);
+ sctp_info.crc32c_calculated = TRUE;
+ sctp_info.crc32c_correct = crc32c_correct;
+ break;
+ case SCTP_CHECKSUM_AUTOMATIC:
+ calculated_adler32 = sctp_adler32(tvb_get_ptr(tvb, 0, length), length);
+ adler32_correct = (checksum == calculated_adler32);
+ calculated_crc32c = sctp_crc32c(tvb_get_ptr(tvb, 0, length), length);
+ crc32c_correct = (checksum == calculated_crc32c);
+ sctp_info.adler32_calculated = TRUE;
+ sctp_info.adler32_correct = adler32_correct;
+ sctp_info.crc32c_calculated = TRUE;
+ sctp_info.crc32c_correct = crc32c_correct;
+ break;
+ }
+
/* In the interest of speed, if "tree" is NULL, don't do any work not
necessary to generate protocol tree items. */
if (tree) {
sctp_tree = proto_item_add_subtree(sctp_item, ett_sctp);
/* add the components of the common header to the protocol tree */
- proto_tree_add_uint(sctp_tree, hf_sctp_source_port, tvb, SOURCE_PORT_OFFSET, SOURCE_PORT_LENGTH, source_port);
- proto_tree_add_uint(sctp_tree, hf_sctp_destination_port, tvb, DESTINATION_PORT_OFFSET, DESTINATION_PORT_LENGTH, destination_port);
- proto_tree_add_uint(sctp_tree, hf_sctp_verification_tag, tvb, VERIFICATION_TAG_OFFSET, VERIFICATION_TAG_LENGTH, verification_tag);
- proto_tree_add_uint_hidden(sctp_tree, hf_sctp_port, tvb, SOURCE_PORT_OFFSET, SOURCE_PORT_LENGTH, source_port);
- proto_tree_add_uint_hidden(sctp_tree, hf_sctp_port, tvb, DESTINATION_PORT_OFFSET, DESTINATION_PORT_LENGTH, destination_port);
-
- length = tvb_length(tvb);
+ proto_tree_add_item(sctp_tree, hf_source_port, tvb, SOURCE_PORT_OFFSET, SOURCE_PORT_LENGTH, NETWORK_BYTE_ORDER);
+ proto_tree_add_item(sctp_tree, hf_destination_port, tvb, DESTINATION_PORT_OFFSET, DESTINATION_PORT_LENGTH, NETWORK_BYTE_ORDER);
+ proto_tree_add_item(sctp_tree, hf_verification_tag, tvb, VERIFICATION_TAG_OFFSET, VERIFICATION_TAG_LENGTH, NETWORK_BYTE_ORDER);
+ proto_tree_add_item_hidden(sctp_tree, hf_port, tvb, SOURCE_PORT_OFFSET, SOURCE_PORT_LENGTH, NETWORK_BYTE_ORDER);
+ proto_tree_add_item_hidden(sctp_tree, hf_port, tvb, DESTINATION_PORT_OFFSET, DESTINATION_PORT_LENGTH, NETWORK_BYTE_ORDER);
+
+ length = tvb_length(tvb);
+ checksum = tvb_get_ntohl(tvb, CHECKSUM_OFFSET);
switch(sctp_checksum) {
case SCTP_CHECKSUM_NONE:
- proto_tree_add_uint_format(sctp_tree, hf_sctp_checksum, tvb, CHECKSUM_OFFSET, CHECKSUM_LENGTH, checksum, "Checksum: 0x%08x (not verified)", checksum);
+ proto_tree_add_uint_format(sctp_tree, hf_checksum, tvb, CHECKSUM_OFFSET, CHECKSUM_LENGTH, checksum, "Checksum: 0x%08x (not verified)", checksum);
break;
case SCTP_CHECKSUM_ADLER32:
- calculated_adler32 = sctp_adler32(tvb_get_ptr(tvb, 0, length), length);
- adler32_correct = (checksum == calculated_adler32);
if (adler32_correct)
- proto_tree_add_uint_format(sctp_tree, hf_sctp_checksum, tvb, CHECKSUM_OFFSET, CHECKSUM_LENGTH,
+ proto_tree_add_uint_format(sctp_tree, hf_checksum, tvb, CHECKSUM_OFFSET, CHECKSUM_LENGTH,
checksum, "Checksum: 0x%08x (correct Adler32)", checksum);
else
- proto_tree_add_uint_format(sctp_tree, hf_sctp_checksum, tvb, CHECKSUM_OFFSET, CHECKSUM_LENGTH,
+ proto_tree_add_uint_format(sctp_tree, hf_checksum, tvb, CHECKSUM_OFFSET, CHECKSUM_LENGTH,
checksum, "Checksum: 0x%08x (incorrect Adler32, should be 0x%08x)", checksum, calculated_adler32);
- proto_tree_add_boolean_hidden(sctp_tree, hf_sctp_checksum_bad, tvb, CHECKSUM_OFFSET, CHECKSUM_LENGTH, !(adler32_correct));
- break;
+ proto_tree_add_boolean_hidden(sctp_tree, hf_checksum_bad, tvb, CHECKSUM_OFFSET, CHECKSUM_LENGTH, !(adler32_correct));
+ break;
case SCTP_CHECKSUM_CRC32C:
- calculated_crc32c = sctp_crc32c(tvb_get_ptr(tvb, 0, length), length);
- crc32c_correct = (checksum == calculated_crc32c);
if (crc32c_correct)
- proto_tree_add_uint_format(sctp_tree, hf_sctp_checksum, tvb, CHECKSUM_OFFSET, CHECKSUM_LENGTH,
+ proto_tree_add_uint_format(sctp_tree, hf_checksum, tvb, CHECKSUM_OFFSET, CHECKSUM_LENGTH,
checksum, "Checksum: 0x%08x (correct CRC32C)", checksum);
else
- proto_tree_add_uint_format(sctp_tree, hf_sctp_checksum, tvb, CHECKSUM_OFFSET, CHECKSUM_LENGTH,
+ proto_tree_add_uint_format(sctp_tree, hf_checksum, tvb, CHECKSUM_OFFSET, CHECKSUM_LENGTH,
checksum, "Checksum: 0x%08x (incorrect CRC32C, should be 0x%08x)", checksum, calculated_crc32c);
- proto_tree_add_boolean_hidden(sctp_tree, hf_sctp_checksum_bad, tvb, CHECKSUM_OFFSET, CHECKSUM_LENGTH, !(crc32c_correct));
+ proto_tree_add_boolean_hidden(sctp_tree, hf_checksum_bad, tvb, CHECKSUM_OFFSET, CHECKSUM_LENGTH, !(crc32c_correct));
break;
case SCTP_CHECKSUM_AUTOMATIC:
- calculated_adler32 = sctp_adler32(tvb_get_ptr(tvb, 0, length), length);
- adler32_correct = (checksum == calculated_adler32);
- calculated_crc32c = sctp_crc32c(tvb_get_ptr(tvb, 0, length), length);
- crc32c_correct = (checksum == calculated_crc32c);
if ((adler32_correct) && !(crc32c_correct))
- proto_tree_add_uint_format(sctp_tree, hf_sctp_checksum, tvb, CHECKSUM_OFFSET, CHECKSUM_LENGTH,
+ proto_tree_add_uint_format(sctp_tree, hf_checksum, tvb, CHECKSUM_OFFSET, CHECKSUM_LENGTH,
checksum, "Checksum: 0x%08x (correct Adler32)", checksum);
else if (!(adler32_correct) && (crc32c_correct))
- proto_tree_add_uint_format(sctp_tree, hf_sctp_checksum, tvb, CHECKSUM_OFFSET, CHECKSUM_LENGTH,
+ proto_tree_add_uint_format(sctp_tree, hf_checksum, tvb, CHECKSUM_OFFSET, CHECKSUM_LENGTH,
checksum, "Checksum: 0x%08x (correct CRC32C)", checksum);
else if ((adler32_correct) && (crc32c_correct))
- proto_tree_add_uint_format(sctp_tree, hf_sctp_checksum, tvb, CHECKSUM_OFFSET, CHECKSUM_LENGTH,
+ proto_tree_add_uint_format(sctp_tree, hf_checksum, tvb, CHECKSUM_OFFSET, CHECKSUM_LENGTH,
checksum, "Checksum: 0x%08x (correct Adler32 and CRC32C)", checksum);
else
- proto_tree_add_uint_format(sctp_tree, hf_sctp_checksum, tvb, CHECKSUM_OFFSET, CHECKSUM_LENGTH,
+ proto_tree_add_uint_format(sctp_tree, hf_checksum, tvb, CHECKSUM_OFFSET, CHECKSUM_LENGTH,
checksum, "Checksum: 0x%08x (incorrect, should be 0x%08x (Adler32) or 0x%08x (CRC32C))",
checksum, calculated_adler32, calculated_crc32c);
- proto_tree_add_boolean_hidden(sctp_tree, hf_sctp_checksum_bad, tvb, CHECKSUM_OFFSET, CHECKSUM_LENGTH, !(crc32c_correct || adler32_correct));
+ proto_tree_add_boolean_hidden(sctp_tree, hf_checksum_bad, tvb, CHECKSUM_OFFSET, CHECKSUM_LENGTH, !(crc32c_correct || adler32_correct));
break;
}
} else {
sctp_item = NULL;
};
/* add all chunks of the sctp datagram to the protocol tree */
- dissect_sctp_chunks(tvb, pinfo, tree, sctp_item, sctp_tree);
+ dissect_sctp_chunks(tvb, pinfo, tree, sctp_item, sctp_tree, encapsulated);
+}
+
+static void
+dissect_sctp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
+{
+ guint16 source_port, destination_port;
+
+ /* Extract the common header */
+ source_port = tvb_get_ntohs(tvb, SOURCE_PORT_OFFSET);
+ destination_port = tvb_get_ntohs(tvb, DESTINATION_PORT_OFFSET);
+
+ /* update pi structure */
+ pinfo->ptype = PT_SCTP;
+ pinfo->srcport = source_port;
+ pinfo->destport = destination_port;
+
+ /* make entry in the Protocol column on summary display */
+ if (check_col(pinfo->cinfo, COL_PROTOCOL))
+ col_set_str(pinfo->cinfo, COL_PROTOCOL, "SCTP");
+
+ /* Clear entries in Info column on summary display */
+ if (check_col(pinfo->cinfo, COL_INFO))
+ col_set_str(pinfo->cinfo, COL_INFO, "");
+
+ memset(&sctp_info, 0, sizeof(struct _sctp_info));
+ sctp_info.verification_tag = tvb_get_ntohl(tvb, VERIFICATION_TAG_OFFSET);
+ dissect_sctp_packet(tvb, pinfo, tree, FALSE);
+ if (!pinfo->in_error_pkt)
+ tap_queue_packet(sctp_tap, pinfo, &sctp_info);
}
/* Register the protocol with Ethereal */
/* Setup list of header fields */
static hf_register_info hf[] = {
- { &hf_sctp_source_port,
- { "Source port", "sctp.srcport",
- FT_UINT16, BASE_DEC, NULL, 0x0,
- "", HFILL }
- },
- { &hf_sctp_destination_port,
- { "Destination port", "sctp.dstport",
- FT_UINT16, BASE_DEC, NULL, 0x0,
- "", HFILL }
- },
- { &hf_sctp_port,
- { "Port", "sctp.port",
- FT_UINT16, BASE_DEC, NULL, 0x0,
- "", HFILL }
- },
- { &hf_sctp_verification_tag,
- { "Verification tag", "sctp.verfication_tag",
- FT_UINT32, BASE_HEX, NULL, 0x0,
- "", HFILL }
- },
- { &hf_sctp_checksum,
- { "Checksum", "sctp.checksum",
- FT_UINT32, BASE_HEX, NULL, 0x0,
- "", HFILL }
- },
- { &hf_sctp_checksum_bad,
- { "Bad checksum", "sctp.checksum_bad",
- FT_BOOLEAN, BASE_NONE, NULL, 0x0,
- "", HFILL }
- },
- { &hf_sctp_chunk_type,
- { "Identifier", "sctp.chunk_type",
- FT_UINT8, BASE_DEC, VALS(sctp_chunk_type_values), 0x0,
- "", HFILL }
- },
- { &hf_sctp_chunk_flags,
- { "Flags", "sctp.chunk_flags",
- FT_UINT8, BASE_BIN, NULL, 0x0,
- "", HFILL }
- },
- { &hf_sctp_chunk_length,
- { "Length", "sctp.chunk_length",
- FT_UINT16, BASE_DEC, NULL, 0x0,
- "", HFILL }
- },
- { &hf_sctp_init_chunk_initiate_tag,
- { "Initiate tag", "sctp.init.chunk.initiate.tag",
- FT_UINT32, BASE_HEX, NULL, 0x0,
- "", HFILL }
- },
- { &hf_sctp_init_chunk_adv_rec_window_credit,
- { "Advertised reciever window credit (a_rwnd)", "sctp.init.chunk.credit",
- FT_UINT32, BASE_DEC, NULL, 0x0,
- "", HFILL }
- },
- { &hf_sctp_init_chunk_number_of_outbound_streams,
- { "Number of outbound streams", "sctp.init.chunk.nr.out.streams",
- FT_UINT16, BASE_DEC, NULL, 0x0,
- "", HFILL }
- },
- { &hf_sctp_init_chunk_number_of_inbound_streams,
- { "Number of inbound streams", "sctp.init.chunk.nr.in.streams",
- FT_UINT16, BASE_DEC, NULL, 0x0,
- "", HFILL }
- },
- {&hf_sctp_init_chunk_initial_tsn,
- { "Initial TSN", "sctp.init.chunk.initial.tsn",
- FT_UINT32, BASE_DEC, NULL, 0x0,
- "", HFILL }
- },
- {&hf_sctp_cumulative_tsn_ack,
- { "Cumulative TSN Ack", "sctp.cumulative.tsn.ack",
- FT_UINT32, BASE_DEC, NULL, 0x0,
- "", HFILL }
- },
- {&hf_sctp_data_chunk_tsn,
- { "TSN", "sctp.tsn",
- FT_UINT32, BASE_DEC, NULL, 0x0,
- "", HFILL }
- },
- {&hf_sctp_data_chunk_stream_id,
- { "Stream Identifier", "sctp.stream_id",
- FT_UINT16, BASE_HEX, NULL, 0x0,
- "", HFILL }
- },
- {&hf_sctp_data_chunk_stream_seq_number,
- { "Stream sequence number", "sctp.stream_seq_number",
- FT_UINT16, BASE_DEC, NULL, 0x0,
- "", HFILL }
- },
- {&hf_sctp_data_chunk_payload_proto_id,
- { "Payload protocol identifier", "sctp.payload_proto_id",
- FT_UINT32, BASE_DEC, VALS(sctp_payload_proto_id_values), 0x0,
- "", HFILL }
- },
- {&hf_sctp_data_chunk_e_bit,
- { "E-Bit", "sctp.data.e_bit",
- FT_BOOLEAN, 8, TFS(&sctp_data_chunk_e_bit_value), SCTP_DATA_CHUNK_E_BIT,
- "", HFILL }
- },
- {&hf_sctp_data_chunk_b_bit,
- { "B-Bit", "sctp.data.b_bit",
- FT_BOOLEAN, 8, TFS(&sctp_data_chunk_b_bit_value), SCTP_DATA_CHUNK_B_BIT,
- "", HFILL }
- },
- {&hf_sctp_data_chunk_u_bit,
- { "U-Bit", "sctp.data.u.bit",
- FT_BOOLEAN, 8, TFS(&sctp_data_chunk_u_bit_value), SCTP_DATA_CHUNK_U_BIT,
- "", HFILL }
- },
- {&hf_sctp_sack_chunk_cumulative_tsn_ack,
- { "Cumulative TSN ACK", "sctp.sack.cumulative_tsn_ack",
- FT_UINT32, BASE_DEC, NULL, 0x0,
- "", HFILL }
- },
- {&hf_sctp_sack_chunk_adv_rec_window_credit,
- { "Advertised receiver window credit (a_rwnd)", "sctp.sack.a_rwnd",
- FT_UINT32, BASE_DEC, NULL, 0x0,
- "", HFILL }
- },
- {&hf_sctp_sack_chunk_number_of_gap_blocks,
- { "Number of gap acknowldgement blocks ", "sctp.sack.number_of_gap_blocks",
- FT_UINT16, BASE_DEC, NULL, 0x0,
- "", HFILL }
- },
- {&hf_sctp_sack_chunk_number_of_dup_tsns,
- { "Number of duplicated TSNs", "sctp.sack.number_of_duplicated_tsns",
- FT_UINT16, BASE_DEC, NULL, 0x0,
- "", HFILL }
- },
- {&hf_sctp_sack_chunk_gap_block_start,
- { "Start", "sctp.sack.gap_block_start",
- FT_UINT16, BASE_DEC, NULL, 0x0,
- "", HFILL }
- },
- {&hf_sctp_sack_chunk_gap_block_end,
- { "End", "sctp.sack.gap_block_end",
- FT_UINT16, BASE_DEC, NULL, 0x0,
- "", HFILL }
- },
- {&hf_sctp_sack_chunk_duplicate_tsn,
- { "Duplicate TSN", "sctp.sack.duplicate.tsn",
- FT_UINT16, BASE_DEC, NULL, 0x0,
- "", HFILL }
- },
- {&hf_sctp_shutdown_chunk_cumulative_tsn_ack,
- { "Cumulative TSN Ack", "sctp.shutdown.cumulative_tsn_ack",
- FT_UINT32, BASE_DEC, NULL, 0x0,
- "", HFILL }
- },
- {&hf_sctp_ecne_chunk_lowest_tsn,
- { "Lowest TSN", "sctp.ecne.lowest_tsn",
- FT_UINT32, BASE_DEC, NULL, 0x0,
- "", HFILL }
- },
- {&hf_sctp_cwr_chunk_lowest_tsn,
- { "Lowest TSN", "sctp.cwr.lowest_tsn",
- FT_UINT32, BASE_DEC, NULL, 0x0,
- "", HFILL }
- },
- {&hf_sctp_shutdown_complete_chunk_t_bit,
- { "T-Bit", "sctp.shutdown_complete.t_bit",
- FT_BOOLEAN, 8, TFS(&sctp_shutdown_complete_chunk_t_bit_value), SCTP_SHUTDOWN_COMPLETE_CHUNK_T_BIT,
- "", HFILL }
- },
- {&hf_sctp_abort_chunk_t_bit,
- { "T-Bit", "sctp.abort.t_bit",
- FT_BOOLEAN, 8, TFS(&sctp_shutdown_complete_chunk_t_bit_value), SCTP_SHUTDOWN_COMPLETE_CHUNK_T_BIT,
- "", HFILL }
- },
- {&hf_sctp_forward_tsn_chunk_tsn,
- { "New cumulative TSN", "sctp.forward_tsn.tsn",
- FT_UINT32, BASE_DEC, NULL, 0x0,
- "", HFILL }
- },
- {&hf_sctp_forward_tsn_chunk_sid,
- { "Stream identifier", "sctp.forward_tsn.sid",
- FT_UINT16, BASE_DEC, NULL, 0x0,
- "", HFILL }
- },
- {&hf_sctp_forward_tsn_chunk_ssn,
- { "Stream sequence number", "sctp.forward_tsn.ssn",
- FT_UINT16, BASE_DEC, NULL, 0x0,
- "", HFILL }
- },
- {&hf_sctp_chunk_parameter_type,
- { "Parameter type", "sctp.parameter.type",
- FT_UINT16, BASE_HEX, VALS(sctp_parameter_identifier_values), 0x0,
- "", HFILL }
- },
- {&hf_sctp_chunk_parameter_length,
- { "Parameter length", "sctp.parameter.length",
- FT_UINT16, BASE_DEC, NULL, 0x0,
- "", HFILL }
- },
- {&hf_sctp_parameter_ipv4_address,
- { "IP Version 4 address", "sctp.parameter.ipv4_address",
- FT_IPv4, BASE_NONE, NULL, 0x0,
- "", HFILL }
- },
- {&hf_sctp_parameter_ipv6_address,
- { "IP Version 6 address", "sctp.parameter.ipv6_address",
- FT_IPv6, BASE_NONE, NULL, 0x0,
- "", HFILL }
- },
- {&hf_sctp_parameter_cookie_preservative_increment,
- { "Suggested Cookie life-span increment (msec)", "sctp.parameter.cookie_preservative_incr",
- FT_UINT32, BASE_DEC, NULL, 0x0,
- "", HFILL }
- },
- {&hf_sctp_parameter_hostname_hostname,
- { "Hostname", "sctp.parameter.hostname.hostname",
- FT_STRING, BASE_NONE, NULL, 0x0,
- "", HFILL }
- },
- {&hf_sctp_supported_address_types_parameter,
- { "Supported address type", "sctp.parameter.supported_addres_type",
- FT_UINT16, BASE_DEC, NULL, 0x0,
- "", HFILL }
- },
- {&hf_sctp_asconf_serial,
- { "Serial Number", "sctp.asconf.serial_number",
- FT_UINT32, BASE_HEX, NULL, 0x0,
- "", HFILL }
- },
- {&hf_sctp_asconf_ack_serial,
- { "Serial Number", "sctp.asconf_ack.serial_number",
- FT_UINT32, BASE_HEX, NULL, 0x0,
- "", HFILL }
- },
- {&hf_sctp_correlation_id,
- { "Correlation_id", "sctp.correlation_id",
- FT_UINT32, BASE_HEX, NULL, 0x0,
- "", HFILL }
- },
- {&hf_sctp_adap_indication,
- { "Indication", "sctp.adapation_layer_indication.indication",
- FT_UINT32, BASE_HEX, NULL, 0x0,
- "", HFILL }
- },
- {&hf_sctp_cause_code,
- { "Cause code", "sctp.cause.code",
- FT_UINT16, BASE_HEX, VALS(sctp_cause_code_values), 0x0,
- "", HFILL }
- },
- {&hf_sctp_cause_length,
- { "Cause length", "sctp.cause.length",
- FT_UINT16, BASE_DEC, NULL, 0x0,
- "", HFILL }
- },
- {&hf_sctp_cause_stream_identifier,
- { "Stream identifier", "sctp.cause.stream_identifier",
- FT_UINT16, BASE_DEC, NULL, 0x0,
- "", HFILL }
- },
- {&hf_sctp_cause_number_of_missing_parameters,
- { "Number of missing parameters", "sctp.cause.nr_of_missing_parameters",
- FT_UINT32, BASE_DEC, NULL, 0x0,
- "", HFILL }
- },
- {&hf_sctp_cause_missing_parameter_type,
- { "Missing parameter type", "sctp.cause.missing_parameter_type",
- FT_UINT16, BASE_HEX, VALS(sctp_parameter_identifier_values), 0x0,
- "", HFILL }
- },
- {&hf_sctp_cause_measure_of_staleness,
- { "Measure of staleness in usec", "sctp.cause.measure_of_staleness",
- FT_UINT32, BASE_DEC, NULL, 0x0,
- "", HFILL }
- },
- {&hf_sctp_cause_tsn,
- { "TSN", "sctp.cause.tsn",
- FT_UINT32, BASE_DEC, NULL, 0x0,
- "", HFILL }
- },
- };
+ { &hf_source_port, { "Source port", "sctp.srcport", FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL } },
+ { &hf_destination_port, { "Destination port", "sctp.dstport", FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL } },
+ { &hf_port, { "Port", "sctp.port", FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL } },
+ { &hf_verification_tag, { "Verification tag", "sctp.verification_tag", FT_UINT32, BASE_HEX, NULL, 0x0, "", HFILL } },
+ { &hf_checksum, { "Checksum", "sctp.checksum", FT_UINT32, BASE_HEX, NULL, 0x0, "", HFILL } },
+ { &hf_checksum_bad, { "Bad checksum", "sctp.checksum_bad", FT_BOOLEAN, BASE_NONE, NULL, 0x0, "", HFILL } },
+ { &hf_chunk_type, { "Chunk type", "sctp.chunk_type", FT_UINT8, BASE_DEC, VALS(chunk_type_values), 0x0, "", HFILL } },
+ { &hf_chunk_flags, { "Chunk flags", "sctp.chunk_flags", FT_UINT8, BASE_HEX, NULL, 0x0, "", HFILL } },
+ { &hf_chunk_bit_1, { "Bit", "sctp.chunk_bit_1", FT_BOOLEAN, 8, TFS(&sctp_chunk_bit_1_value), SCTP_CHUNK_BIT_1, "", HFILL } },
+ { &hf_chunk_bit_2, { "Bit", "sctp.chunk_bit_2", FT_BOOLEAN, 8, TFS(&sctp_chunk_bit_2_value), SCTP_CHUNK_BIT_2, "", HFILL } },
+ { &hf_chunk_length, { "Chunk length", "sctp.chunk_length", FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL } },
+ { &hf_chunk_padding, { "Chunk padding", "sctp.chunk_padding", FT_BYTES, BASE_NONE, NULL, 0x0, "", HFILL } },
+ { &hf_chunk_value, { "Chunk value", "sctp.chunk_value", FT_BYTES, BASE_NONE, NULL, 0x0, "", HFILL } },
+ { &hf_cookie, { "Cookie", "sctp.cookie", FT_BYTES, BASE_NONE, NULL, 0x0, "", HFILL } },
+ { &hf_initiate_tag, { "Initiate tag", "sctp.initiate_tag", FT_UINT32, BASE_HEX, NULL, 0x0, "", HFILL } },
+ { &hf_init_chunk_initiate_tag, { "Initiate tag", "sctp.init_initiate_tag", FT_UINT32, BASE_HEX, NULL, 0x0, "", HFILL } },
+ { &hf_init_chunk_adv_rec_window_credit, { "Advertised receiver window credit (a_rwnd)", "sctp.init_credit", FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL } },
+ { &hf_init_chunk_number_of_outbound_streams, { "Number of outbound streams", "sctp.init_nr_out_streams", FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL } },
+ { &hf_init_chunk_number_of_inbound_streams, { "Number of inbound streams", "sctp.init_nr_in_streams", FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL } },
+ { &hf_init_chunk_initial_tsn, { "Initial TSN", "sctp.init_initial_tsn", FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL } },
+ { &hf_initack_chunk_initiate_tag, { "Initiate tag", "sctp.initack_initiate_tag", FT_UINT32, BASE_HEX, NULL, 0x0, "", HFILL } },
+ { &hf_initack_chunk_adv_rec_window_credit, { "Advertised receiver window credit (a_rwnd)", "sctp.initack_credit", FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL } },
+ { &hf_initack_chunk_number_of_outbound_streams, { "Number of outbound streams", "sctp.initack_nr_out_streams", FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL } },
+ { &hf_initack_chunk_number_of_inbound_streams, { "Number of inbound streams", "sctp.initack_nr_in_streams", FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL } },
+ { &hf_initack_chunk_initial_tsn, { "Initial TSN", "sctp.initack_initial_tsn", FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL } },
+ { &hf_cumulative_tsn_ack, { "Cumulative TSN Ack", "sctp.cumulative_tsn_ack", FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL } },
+ { &hf_data_chunk_tsn, { "TSN", "sctp.data_tsn", FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL } },
+ { &hf_data_chunk_stream_id, { "Stream Identifier", "sctp.data_sid", FT_UINT16, BASE_HEX, NULL, 0x0, "", HFILL } },
+ { &hf_data_chunk_stream_seq_number, { "Stream sequence number", "sctp.data_ssn", FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL } },
+ { &hf_data_chunk_payload_proto_id, { "Payload protocol identifier", "sctp.data_payload_proto_id", FT_UINT32, BASE_DEC, VALS(sctp_payload_proto_id_values), 0x0, "", HFILL } },
+ { &hf_data_chunk_e_bit, { "E-Bit", "sctp.data_e_bit", FT_BOOLEAN, 8, TFS(&sctp_data_chunk_e_bit_value), SCTP_DATA_CHUNK_E_BIT, "", HFILL } },
+ { &hf_data_chunk_b_bit, { "B-Bit", "sctp.data_b_bit", FT_BOOLEAN, 8, TFS(&sctp_data_chunk_b_bit_value), SCTP_DATA_CHUNK_B_BIT, "", HFILL } },
+ { &hf_data_chunk_u_bit, { "U-Bit", "sctp.data_u_bit", FT_BOOLEAN, 8, TFS(&sctp_data_chunk_u_bit_value), SCTP_DATA_CHUNK_U_BIT, "", HFILL } },
+ { &hf_sack_chunk_cumulative_tsn_ack, { "Cumulative TSN ACK", "sctp.sack_cumulative_tsn_ack", FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL } },
+ { &hf_sack_chunk_adv_rec_window_credit, { "Advertised receiver window credit (a_rwnd)", "sctp.sack_a_rwnd", FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL } },
+ { &hf_sack_chunk_number_of_gap_blocks, { "Number of gap acknowldgement blocks ", "sctp.sack_number_of_gap_blocks", FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL } },
+ { &hf_sack_chunk_number_of_dup_tsns, { "Number of duplicated TSNs", "sctp.sack_number_of_duplicated_tsns", FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL } },
+ { &hf_sack_chunk_gap_block_start, { "Start", "sctp.sack_gap_block_start", FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL } },
+ { &hf_sack_chunk_gap_block_end, { "End", "sctp.sack_gap_block_end", FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL } },
+ { &hf_sack_chunk_duplicate_tsn, { "Duplicate TSN", "sctp.sack_duplicate_tsn", FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL } },
+ { &hf_shutdown_chunk_cumulative_tsn_ack, { "Cumulative TSN Ack", "sctp.shutdown_cumulative_tsn_ack", FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL } },
+ { &hf_ecne_chunk_lowest_tsn, { "Lowest TSN", "sctp.ecne_lowest_tsn", FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL } },
+ { &hf_cwr_chunk_lowest_tsn, { "Lowest TSN", "sctp.cwr_lowest_tsn", FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL } },
+ { &hf_shutdown_complete_chunk_t_bit, { "T-Bit", "sctp.shutdown_complete_t_bit", FT_BOOLEAN, 8, TFS(&sctp_shutdown_complete_chunk_t_bit_value), SCTP_SHUTDOWN_COMPLETE_CHUNK_T_BIT, "", HFILL } },
+ { &hf_abort_chunk_t_bit, { "T-Bit", "sctp.abort_t_bit", FT_BOOLEAN, 8, TFS(&sctp_shutdown_complete_chunk_t_bit_value), SCTP_SHUTDOWN_COMPLETE_CHUNK_T_BIT, "", HFILL } },
+ { &hf_forward_tsn_chunk_tsn, { "New cumulative TSN", "sctp.forward_tsn_tsn", FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL } },
+ { &hf_forward_tsn_chunk_sid, { "Stream identifier", "sctp.forward_tsn_sid", FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL } },
+ { &hf_forward_tsn_chunk_ssn, { "Stream sequence number", "sctp.forward_tsn_ssn", FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL } },
+ { &hf_parameter_type, { "Parameter type", "sctp.parameter_type", FT_UINT16, BASE_HEX, VALS(parameter_identifier_values), 0x0, "", HFILL } },
+ { &hf_parameter_length, { "Parameter length", "sctp.parameter_length", FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL } },
+ { &hf_parameter_value, { "Parameter value", "sctp.parameter_value", FT_BYTES, BASE_NONE, NULL, 0x0, "", HFILL } },
+ { &hf_parameter_padding, { "Parameter padding", "sctp.parameter_padding", FT_BYTES, BASE_NONE, NULL, 0x0, "", HFILL } },
+ { &hf_parameter_bit_1, { "Bit", "sctp.parameter_bit_1", FT_BOOLEAN, 16, TFS(&sctp_parameter_bit_1_value), SCTP_PARAMETER_BIT_1, "", HFILL } },
+ { &hf_parameter_bit_2, { "Bit", "sctp.parameter_bit_2", FT_BOOLEAN, 16, TFS(&sctp_parameter_bit_2_value), SCTP_PARAMETER_BIT_2, "", HFILL } },
+ { &hf_ipv4_address, { "IP Version 4 address", "sctp.parameter_ipv4_address", FT_IPv4, BASE_NONE, NULL, 0x0, "", HFILL } },
+ { &hf_ipv6_address, { "IP Version 6 address", "sctp.parameter_ipv6_address", FT_IPv6, BASE_NONE, NULL, 0x0, "", HFILL } },
+ { &hf_heartbeat_info, { "Heartbeat information", "sctp.parameter_heartbeat_information", FT_BYTES, BASE_NONE, NULL, 0x0, "", HFILL } },
+ { &hf_state_cookie, { "State cookie", "sctp.parameter_state_cookie", FT_BYTES, BASE_NONE, NULL, 0x0, "", HFILL } },
+ { &hf_cookie_preservative_increment, { "Suggested Cookie life-span increment (msec)", "sctp.parameter_cookie_preservative_incr", FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL } },
+ { &hf_hostname, { "Hostname", "sctp.parameter_hostname", FT_STRING, BASE_NONE, NULL, 0x0, "", HFILL } },
+ { &hf_supported_address_type, { "Supported address type", "sctp.parameter_supported_addres_type", FT_UINT16, BASE_DEC, VALS(address_types_values), 0x0, "", HFILL } },
+ { &hf_asconf_serial, { "Serial Number", "sctp.asconf_serial_number", FT_UINT32, BASE_HEX, NULL, 0x0, "", HFILL } },
+ { &hf_asconf_ack_serial, { "Serial Number", "sctp.asconf_ack_serial_number", FT_UINT32, BASE_HEX, NULL, 0x0, "", HFILL } },
+ { &hf_correlation_id, { "Correlation_id", "sctp.correlation_id", FT_UINT32, BASE_HEX, NULL, 0x0, "", HFILL } },
+ { &hf_adap_indication, { "Indication", "sctp.adapation_layer_indication", FT_UINT32, BASE_HEX, NULL, 0x0, "", HFILL } },
+ { &hf_cause_code, { "Cause code", "sctp.cause_code", FT_UINT16, BASE_HEX, VALS(cause_code_values), 0x0, "", HFILL } },
+ { &hf_cause_length, { "Cause length", "sctp.cause_length", FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL } },
+ { &hf_cause_info, { "Cause information", "sctp.cause_information", FT_BYTES, BASE_NONE, NULL, 0x0, "", HFILL } },
+ { &hf_cause_padding, { "Cause padding", "sctp.cause_padding", FT_BYTES, BASE_NONE, NULL, 0x0, "", HFILL } },
+ { &hf_cause_stream_identifier, { "Stream identifier", "sctp.cause_stream_identifier", FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL } },
+ { &hf_cause_reserved, { "Reserved", "sctp.cause_reserved", FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL } },
+ { &hf_cause_number_of_missing_parameters, { "Number of missing parameters", "sctp.cause_nr_of_missing_parameters", FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL } },
+ { &hf_cause_missing_parameter_type, { "Missing parameter type", "sctp.cause_missing_parameter_type", FT_UINT16, BASE_HEX, VALS(parameter_identifier_values), 0x0, "", HFILL } },
+ { &hf_cause_measure_of_staleness, { "Measure of staleness in usec", "sctp.cause_measure_of_staleness", FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL } },
+ { &hf_cause_tsn, { "TSN", "sctp.cause_tsn", FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL } },
+ { &hf_pktdrop_chunk_m_bit, { "M-Bit", "sctp.pckdrop_m_bit", FT_BOOLEAN, 8, TFS(&sctp_pktdropk_m_bit_value), SCTP_PKTDROP_CHUNK_M_BIT, "", HFILL } },
+ { &hf_pktdrop_chunk_b_bit, { "B-Bit", "sctp.pckdrop_b_bit", FT_BOOLEAN, 8, TFS(&sctp_pktdropk_b_bit_value), SCTP_PKTDROP_CHUNK_B_BIT, "", HFILL } },
+ { &hf_pktdrop_chunk_t_bit, { "T-Bit", "sctp.pckdrop_t_bit", FT_BOOLEAN, 8, TFS(&sctp_pktdropk_t_bit_value), SCTP_PKTDROP_CHUNK_T_BIT, "", HFILL } },
+ { &hf_pktdrop_chunk_bandwidth, { "Bandwidth", "sctp.pktdrop_bandwidth", FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL } },
+ { &hf_pktdrop_chunk_queuesize, { "Queuesize", "sctp.pktdrop_queuesize", FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL } },
+ { &hf_pktdrop_chunk_truncated_length, { "Truncated length", "sctp.pktdrop_truncated_length", FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL } },
+ { &hf_pktdrop_chunk_reserved, { "Reserved", "sctp.pktdrop_reserved", FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL } },
+ { &hf_pktdrop_chunk_data_field, { "Data field", "sctp.pktdrop_datafield", FT_BYTES, BASE_NONE, NULL, 0x0, "", HFILL } },
+ };
/* Setup protocol subtree array */
static gint *ett[] = {
&ett_sctp_chunk,
&ett_sctp_chunk_parameter,
&ett_sctp_chunk_cause,
+ &ett_sctp_chunk_type,
&ett_sctp_data_chunk_flags,
- &ett_sctp_shutdown_complete_chunk_flags,
&ett_sctp_abort_chunk_flags,
+ &ett_sctp_shutdown_complete_chunk_flags,
+ &ett_sctp_pktdrop_chunk_flags,
+ &ett_sctp_parameter_type,
&ett_sctp_sack_chunk_gap_block,
- &ett_sctp_supported_address_types_parameter,
&ett_sctp_unrecognized_parameter_parameter,
};
static enum_val_t sctp_checksum_options[] = {
- { "None", SCTP_CHECKSUM_NONE },
- { "Adler 32", SCTP_CHECKSUM_ADLER32 },
- { "CRC 32c", SCTP_CHECKSUM_CRC32C },
- { "Automatic", SCTP_CHECKSUM_AUTOMATIC},
- { NULL, 0 }
+ { "none", "None", SCTP_CHECKSUM_NONE },
+ { "adler-32", "Adler 32", SCTP_CHECKSUM_ADLER32 },
+ { "crc-32c", "CRC 32c", SCTP_CHECKSUM_CRC32C },
+ { "automatic", "Automatic", SCTP_CHECKSUM_AUTOMATIC},
+ { NULL, NULL, 0 }
};
/* Register the protocol name and description */
proto_sctp = proto_register_protocol("Stream Control Transmission Protocol", "SCTP", "sctp");
sctp_module = prefs_register_protocol(proto_sctp, NULL);
- prefs_register_enum_preference(sctp_module, "checksum",
- "Checksum type",
- "The type of checksum used in SCTP packets",
- &sctp_checksum, sctp_checksum_options, FALSE);
+ prefs_register_enum_preference(sctp_module, "checksum", "Checksum type",
+ "The type of checksum used in SCTP packets",
+ &sctp_checksum, sctp_checksum_options, FALSE);
+ prefs_register_bool_preference(sctp_module, "show_always_control_chunks",
+ "Show always control chunks",
+ "Show always SCTP control chunks in the Info column",
+ &show_always_control_chunks);
+ prefs_register_bool_preference(sctp_module, "try_heuristic_first",
+ "Try heuristic sub-dissectors first",
+ "Try to decode a packet using an heuristic sub-dissector before using a sub-dissector registered to a specific port or PPI",
+ &try_heuristic_first);
/* Required function calls to register the header fields and subtrees used */
proto_register_field_array(proto_sctp, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
-
+ sctp_tap = register_tap("sctp");
/* subdissector code */
sctp_port_dissector_table = register_dissector_table("sctp.port", "SCTP port", FT_UINT16, BASE_DEC);
sctp_ppi_dissector_table = register_dissector_table("sctp.ppi", "SCTP payload protocol identifier", FT_UINT32, BASE_HEX);
-
+ register_heur_dissector_list("sctp", &sctp_heur_subdissector_list);
}
void
data_handle = find_dissector("data");
sctp_handle = create_dissector_handle(dissect_sctp, proto_sctp);
dissector_add("ip.proto", IP_PROTO_SCTP, sctp_handle);
+ dissector_add("udp.port", UDP_TUNNELING_PORT, sctp_handle);
}
git.samba.org / obnox / wireshark / wip.git / blobdiff