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wireshark/epan/dissectors/packet-rtps.c

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/* packet-rtps.c
* ~~~~~~~~~~~~~
*
* Routines for Real-Time Publish-Subscribe Protocol (RTPS) dissection
*
* Copyright 2005, Fabrizio Bertocci <fabrizio@rti.com>
* Real-Time Innovations, Inc.
* 385 Moffett Park Drive
* Sunnyvale, CA 94089
*
* Copyright 2003, LUKAS POKORNY <maskis@seznam.cz>
* PETR SMOLIK <petr.smolik@wo.cz>
* ZDENEK SEBEK <sebek@fel.cvut.cz>
* Czech Technical University in Prague
* Faculty of Electrical Engineering <www.fel.cvut.cz>
* Department of Control Engineering <dce.felk.cvut.cz>
*
* $Id$
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* -------------------------------------
*
* The following file is part of the RTPS packet dissector for Wireshark.
*
* RTPS protocol was developed by Real-Time Innovations, Inc. as wire
* protocol for Data Distribution System.
* Additional information at:
* Full OMG DDS Standard Specification:
* http://www.omg.org/cgi-bin/doc?ptc/2003-07-07
*
* NDDS and RTPS information: http://www.rti.com/resources.html
*
*/
#include "config.h"
#include <glib.h>
#include <epan/packet.h>
#include <epan/expert.h>
#include <epan/addr_resolv.h>
#include "packet-rtps.h"
/* Size of the temp buffers used to format various part of the protocol.
* Note: Some of those values are bigger than expected. The reason is
* because the string buffer can also contains decoded values.
* I.e. port size is an integer, but for value 0x0000, it is interpreted
* as a string "PORT_INVALID (0x00000000)"
*/
#define MAX_FLAG_SIZE (20)
#define MAX_GUID_PREFIX_SIZE (128)
#define MAX_GUID_SIZE (160)
#define MAX_VENDOR_ID_SIZE (128)
#define MAX_NTP_TIME_SIZE (128)
#define MAX_PORT_SIZE (32)
#define MAX_PARAM_SIZE (256)
#define MAX_LOCATOR_SIZE (200)
#define MAX_IPV6_SIZE (100)
#define MAX_BITMAP_SIZE (200)
#define MAX_LABEL_SIZE (64)
#define MAX_IPV4_ADDRESS_SIZE (64)
/* Max octects printed on the parameter root for a sequence of octects */
#define MAX_SEQ_OCTETS_PRINTED (20)
static const char * const SM_EXTRA_RPLUS = "(r+)";
static const char * const SM_EXTRA_RMINUS = "(r-)";
static const char * const SM_EXTRA_WPLUS = "(w+)";
static const char * const SM_EXTRA_WMINUS = "(w-)";
static const char * const SM_EXTRA_PPLUS = "(p+)";
static const char * const SM_EXTRA_PMINUS = "(p-)";
static const char * const SM_EXTRA_TPLUS = "(t+)";
static const char * const SM_EXTRA_TMINUS = "(t-)";
/***************************************************************************/
/* Protocol Fields Identifiers */
static int proto_rtps = -1;
static int hf_rtps_protocol_version = -1;
static int hf_rtps_protocol_version_major = -1;
static int hf_rtps_protocol_version_minor = -1;
static int hf_rtps_vendor_id = -1;
static int hf_rtps_domain_id = -1;
static int hf_rtps_participant_idx = -1;
static int hf_rtps_nature_type = -1;
static int hf_rtps_guid_prefix = -1;
static int hf_rtps_host_id = -1;
static int hf_rtps_app_id = -1;
static int hf_rtps_app_id_instance_id = -1;
static int hf_rtps_app_id_app_kind = -1;
static int hf_rtps_sm_id = -1;
static int hf_rtps_sm_flags = -1;
static int hf_rtps_sm_octets_to_next_header = -1;
static int hf_rtps_sm_guid_prefix = -1;
static int hf_rtps_sm_host_id = -1;
static int hf_rtps_sm_app_id = -1;
static int hf_rtps_sm_instance_id = -1;
static int hf_rtps_sm_app_kind = -1;
static int hf_rtps_sm_entity_id = -1;
static int hf_rtps_sm_entity_id_key = -1;
static int hf_rtps_sm_entity_id_kind = -1;
static int hf_rtps_sm_rdentity_id = -1;
static int hf_rtps_sm_rdentity_id_key = -1;
static int hf_rtps_sm_rdentity_id_kind = -1;
static int hf_rtps_sm_wrentity_id = -1;
static int hf_rtps_sm_wrentity_id_key = -1;
static int hf_rtps_sm_wrentity_id_kind = -1;
static int hf_rtps_sm_seq_number = -1;
static int hf_rtps_info_src_ip = -1;
static int hf_rtps_info_src_unused = -1;
static int hf_rtps_parameter_id = -1;
static int hf_rtps_parameter_length = -1;
static int hf_rtps_param_topic_name = -1;
static int hf_rtps_param_strength = -1;
static int hf_rtps_param_type_name = -1;
static int hf_rtps_param_user_data = -1;
static int hf_rtps_param_group_data = -1;
static int hf_rtps_param_topic_data = -1;
static int hf_rtps_param_content_filter_name = -1;
static int hf_rtps_param_related_topic_name = -1;
static int hf_rtps_param_filter_name = -1;
static int hf_rtps_issue_data = -1;
static int hf_rtps_durability_service_cleanup_delay = -1;
static int hf_rtps_liveliness_lease_duration = -1;
static int hf_rtps_participant_lease_duration = -1;
static int hf_rtps_time_based_filter_minimum_separation = -1;
static int hf_rtps_reliability_max_blocking_time= -1;
static int hf_rtps_deadline_period = -1;
static int hf_rtps_latency_budget_duration = -1;
static int hf_rtps_lifespan_duration = -1;
static int hf_rtps_persistence = -1;
static int hf_rtps_info_ts_timestamp = -1;
static int hf_rtps_locator_kind = -1;
static int hf_rtps_locator_port = -1;
static int hf_rtps_locator_ipv4 = -1;
static int hf_rtps_locator_ipv6 = -1;
static int hf_rtps_participant_builtin_endpoints= -1;
static int hf_rtps_participant_manual_liveliness_count = -1;
static int hf_rtps_history_depth = -1;
static int hf_rtps_resource_limit_max_samples = -1;
static int hf_rtps_resource_limit_max_instances = -1;
static int hf_rtps_resource_limit_max_samples_per_instances = -1;
static int hf_rtps_filter_bitmap = -1;
static int hf_rtps_type_checksum = -1;
static int hf_rtps_queue_size = -1;
static int hf_rtps_acknack_counter = -1;
static int hf_rtps_durability_service_history_kind = -1;
static int hf_rtps_durability_service_history_depth = -1;
static int hf_rtps_durability_service_max_samples = -1;
static int hf_rtps_durability_service_max_instances = -1;
static int hf_rtps_durability_service_max_samples_per_instances = -1;
static int hf_rtps_liveliness_kind = -1;
static int hf_rtps_manager_key = -1;
static int hf_rtps_locator_udp_v4 = -1;
static int hf_rtps_locator_udp_v4_port = -1;
static int hf_param_ip_address = -1;
static int hf_rtps_param_port = -1;
static int hf_rtps_expects_inline_qos = -1;
static int hf_rtps_presentation_coherent_access = -1;
static int hf_rtps_presentation_ordered_access = -1;
static int hf_rtps_expects_ack = -1;
static int hf_rtps_reliability_kind = -1;
static int hf_rtps_durability = -1;
static int hf_rtps_ownership = -1;
static int hf_rtps_presentation_access_scope = -1;
static int hf_rtps_destination_order = -1;
static int hf_rtps_history_kind = -1;
/* Subtree identifiers */
static gint ett_rtps = -1;
static gint ett_rtps_default_mapping = -1;
static gint ett_rtps_proto_version = -1;
static gint ett_rtps_submessage = -1;
static gint ett_rtps_parameter_sequence = -1;
static gint ett_rtps_parameter = -1;
static gint ett_rtps_flags = -1;
static gint ett_rtps_entity = -1;
static gint ett_rtps_rdentity = -1;
static gint ett_rtps_wrentity = -1;
static gint ett_rtps_guid_prefix = -1;
static gint ett_rtps_app_id = -1;
static gint ett_rtps_locator_udp_v4 = -1;
static gint ett_rtps_locator = -1;
static gint ett_rtps_locator_list = -1;
static gint ett_rtps_ntp_time = -1;
static gint ett_rtps_bitmap = -1;
static gint ett_rtps_seq_string = -1;
static gint ett_rtps_seq_ulong = -1;
static gint ett_rtps_resource_limit = -1;
static gint ett_rtps_durability_service = -1;
static gint ett_rtps_liveliness = -1;
static gint ett_rtps_manager_key = -1;
/***************************************************************************/
/* Value-to-String Tables */
static const value_string vendor_vals[] = {
{ RTPS_VENDOR_RTI, RTPS_VENDOR_RTI_STRING},
{ RTPS_VENDOR_TOC, RTPS_VENDOR_TOC_STRING},
{ 0, NULL }
};
static const value_string entity_id_vals[] = {
{ ENTITYID_UNKNOWN, "ENTITYID_UNKNOWN" },
{ ENTITYID_BUILTIN_TOPIC_WRITER, "ENTITYID_BUILTIN_TOPIC_WRITER" },
{ ENTITYID_BUILTIN_TOPIC_READER, "ENTITYID_BUILTIN_TOPIC_READER" },
{ ENTITYID_BUILTIN_PUBLICATIONS_WRITER, "ENTITYID_BUILTIN_PUBLICATIONS_WRITER" },
{ ENTITYID_BUILTIN_PUBLICATIONS_READER, "ENTITYID_BUILTIN_PUBLICATIONS_READER" },
{ ENTITYID_BUILTIN_SUBSCRIPTIONS_WRITER, "ENTITYID_BUILTIN_SUBSCRIPTIONS_WRITER" },
{ ENTITYID_BUILTIN_SUBSCRIPTIONS_READER, "ENTITYID_BUILTIN_SUBSCRIPTIONS_READER" },
{ ENTITYID_BUILTIN_SDP_PARTICIPANT_WRITER, "ENTITYID_BUILTIN_SDP_PARTICIPANT_WRITER" },
{ ENTITYID_BUILTIN_SDP_PARTICIPANT_READER, "ENTITYID_BUILTIN_SDP_PARTICIPANT_READER" },
/* Deprecated Items */
{ ENTITYID_APPLICATIONS_WRITER, "writerApplications [DEPRECATED]" },
{ ENTITYID_APPLICATIONS_READER, "readerApplications [DEPRECATED]" },
{ ENTITYID_CLIENTS_WRITER, "writerClients [DEPRECATED]" },
{ ENTITYID_CLIENTS_READER, "readerClients [DEPRECATED]" },
{ ENTITYID_SERVICES_WRITER, "writerServices [DEPRECATED]" },
{ ENTITYID_SERVICES_READER, "readerServices [DEPRECATED]" },
{ ENTITYID_MANAGERS_WRITER, "writerManagers [DEPRECATED]" },
{ ENTITYID_MANAGERS_READER, "readerManagers [DEPRECATED]" },
{ ENTITYID_APPLICATION_SELF, "applicationSelf [DEPRECATED]" },
{ ENTITYID_APPLICATION_SELF_WRITER, "writerApplicationSelf [DEPRECATED]" },
{ ENTITYID_APPLICATION_SELF_READER, "readerApplicationSelf [DEPRECATED]" },
{ 0, NULL }
};
static const value_string entity_kind_vals [] = {
{ ENTITYKIND_APPDEF_UNKNOWN, "Application-defined unknown kind" },
{ ENTITYKIND_APPDEF_PARTICIPANT, "Application-defined participant" },
{ ENTITYKIND_APPDEF_WRITER_WITH_KEY, "Application-defined writer (with key)" },
{ ENTITYKIND_APPDEF_WRITER_NO_KEY, "Application-defined writer (no key)" },
{ ENTITYKIND_APPDEF_READER_WITH_KEY, "Application-defined reader (with key)" },
{ ENTITYKIND_APPDEF_READER_NO_KEY, "Application-defined reader (no key)" },
{ ENTITYKIND_BUILTIN_PARTICIPANT, "Built-in participant" },
{ ENTITYKIND_BUILTIN_WRITER_WITH_KEY, "Built-in writer (with key)" },
{ ENTITYKIND_BUILTIN_WRITER_NO_KEY, "Built-in writer (no key)" },
{ ENTITYKIND_BUILTIN_READER_WITH_KEY, "Built-in reader (with key)" },
{ ENTITYKIND_BUILTIN_READER_NO_KEY, "Built-in reader (no key)" },
{ 0, NULL }
};
static const value_string nature_type_vals[] = {
{ PORT_METATRAFFIC_UNICAST, "UNICAST_METATRAFFIC"},
{ PORT_METATRAFFIC_MULTICAST, "MULTICAST_METATRAFFIC"},
{ PORT_USERTRAFFIC_UNICAST, "UNICAST_USERTRAFFIC"},
{ PORT_USERTRAFFIC_MULTICAST, "MULTICAST_USERTRAFFIC"},
{ 0, NULL }
};
static const value_string app_kind_vals[] = {
{ APPKIND_UNKNOWN, "APPKIND_UNKNOWN" },
{ APPKIND_MANAGED_APPLICATION, "ManagedApplication" },
{ APPKIND_MANAGER, "Manager" },
{ 0, NULL }
};
static const value_string rtps_locator_kind_vals[] = {
{ LOCATOR_KIND_UDPV4, "LOCATOR_KIND_UDPV4" },
{ LOCATOR_KIND_UDPV6, "LOCATOR_KIND_UDPV6" },
{ LOCATOR_KIND_INVALID, "LOCATOR_KIND_INVALID" },
{ LOCATOR_KIND_RESERVED, "LOCATOR_KIND_RESERVED" },
{ 0, NULL }
};
static const value_string submessage_id_vals[] = {
{ PAD, "PAD" },
{ DATA, "DATA" },
{ NOKEY_DATA, "NOKEY_DATA" },
{ ACKNACK, "ACKNACK" },
{ HEARTBEAT, "HEARTBEAT" },
{ GAP, "GAP" },
{ INFO_TS, "INFO_TS" },
{ INFO_SRC, "INFO_SRC" },
{ INFO_REPLY_IP4, "INFO_REPLY_IP4" },
{ INFO_DST, "INFO_DST" },
{ INFO_REPLY, "INFO_REPLY" },
{ 0, NULL }
};
static const value_string typecode_kind_vals[] = {
{ RTI_CDR_TK_NULL, "(unknown)" },
{ RTI_CDR_TK_SHORT, "short" },
{ RTI_CDR_TK_LONG, "long" },
{ RTI_CDR_TK_USHORT, "unsigned short" },
{ RTI_CDR_TK_ULONG, "unsigned long" },
{ RTI_CDR_TK_FLOAT, "float" },
{ RTI_CDR_TK_DOUBLE, "double" },
{ RTI_CDR_TK_BOOLEAN, "boolean" },
{ RTI_CDR_TK_CHAR, "char" },
{ RTI_CDR_TK_OCTET, "octet" },
{ RTI_CDR_TK_STRUCT, "struct" },
{ RTI_CDR_TK_UNION, "union" },
{ RTI_CDR_TK_ENUM, "enum" },
{ RTI_CDR_TK_STRING, "string" },
{ RTI_CDR_TK_SEQUENCE, "sequence" },
{ RTI_CDR_TK_ARRAY, "array" },
{ RTI_CDR_TK_ALIAS, "alias" },
{ RTI_CDR_TK_LONGLONG, "long long" },
{ RTI_CDR_TK_ULONGLONG, "unsigned long long" },
{ RTI_CDR_TK_LONGDOUBLE, "long double" },
{ RTI_CDR_TK_WCHAR, "wchar" },
{ RTI_CDR_TK_WSTRING, "wstring" },
{ 0, NULL }
};
static const value_string parameter_id_vals[] = {
{ PID_PAD, "PID_PAD" },
{ PID_SENTINEL, "PID_SENTINEL" },
{ PID_USER_DATA, "PID_USER_DATA" },
{ PID_TOPIC_NAME, "PID_TOPIC_NAME" },
{ PID_TYPE_NAME, "PID_TYPE_NAME" },
{ PID_GROUP_DATA, "PID_GROUP_DATA" },
{ PID_DEADLINE, "PID_DEADLINE" },
{ PID_DEADLINE_OFFERED, "PID_DEADLINE_OFFERED [deprecated]" },
{ PID_PARTICIPANT_LEASE_DURATION, "PID_PARTICIPANT_LEASE_DURATION" },
{ PID_PERSISTENCE, "PID_PERSISTENCE" },
{ PID_TIME_BASED_FILTER, "PID_TIME_BASED_FILTER" },
{ PID_OWNERSHIP_STRENGTH, "PID_OWNERSHIP_STRENGTH" },
{ PID_TYPE_CHECKSUM, "PID_TYPE_CHECKSUM [deprecated]" },
{ PID_TYPE2_NAME, "PID_TYPE2_NAME [deprecated]" },
{ PID_TYPE2_CHECKSUM, "PID_TYPE2_CHECKSUM [deprecated]" },
{ PID_METATRAFFIC_MULTICAST_IPADDRESS,"PID_METATRAFFIC_MULTICAST_IPADDRESS"},
{ PID_DEFAULT_UNICAST_IPADDRESS, "PID_DEFAULT_UNICAST_IPADDRESS" },
{ PID_METATRAFFIC_UNICAST_PORT, "PID_METATRAFFIC_UNICAST_PORT" },
{ PID_DEFAULT_UNICAST_PORT, "PID_DEFAULT_UNICAST_PORT" },
{ PID_IS_RELIABLE, "PID_IS_RELIABLE [deprecated]" },
{ PID_EXPECTS_ACK, "PID_EXPECTS_ACK" },
{ PID_MULTICAST_IPADDRESS, "PID_MULTICAST_IPADDRESS" },
{ PID_MANAGER_KEY, "PID_MANAGER_KEY [deprecated]" },
{ PID_SEND_QUEUE_SIZE, "PID_SEND_QUEUE_SIZE" },
{ PID_RELIABILITY_ENABLED, "PID_RELIABILITY_ENABLED" },
{ PID_PROTOCOL_VERSION, "PID_PROTOCOL_VERSION" },
{ PID_VENDOR_ID, "PID_VENDOR_ID" },
{ PID_VARGAPPS_SEQUENCE_NUMBER_LAST, "PID_VARGAPPS_SEQUENCE_NUMBER_LAST [deprecated]" },
{ PID_RECV_QUEUE_SIZE, "PID_RECV_QUEUE_SIZE [deprecated]" },
{ PID_RELIABILITY_OFFERED, "PID_RELIABILITY_OFFERED [deprecated]" },
{ PID_RELIABILITY, "PID_RELIABILITY" },
{ PID_LIVELINESS, "PID_LIVELINESS" },
{ PID_LIVELINESS_OFFERED, "PID_LIVELINESS_OFFERED [deprecated]" },
{ PID_DURABILITY, "PID_DURABILITY" },
{ PID_DURABILITY_SERVICE, "PID_DURABILITY_SERVICE" },
{ PID_PRESENTATION_OFFERED, "PID_PRESENTATION_OFFERED [deprecated]" },
{ PID_OWNERSHIP, "PID_OWNERSHIP" },
{ PID_OWNERSHIP_OFFERED, "PID_OWNERSHIP_OFFERED [deprecated]" },
{ PID_PRESENTATION, "PID_PRESENTATION" },
{ PID_DESTINATION_ORDER, "PID_DESTINATION_ORDER" },
{ PID_DESTINATION_ORDER_OFFERED, "PID_DESTINATION_ORDER_OFFERED [deprecated]" },
{ PID_LATENCY_BUDGET, "PID_LATENCY_BUDGET" },
{ PID_LATENCY_BUDGET_OFFERED, "PID_LATENCY_BUDGET_OFFERED [deprecated]" },
{ PID_PARTITION, "PID_PARTITION" },
{ PID_PARTITION_OFFERED, "PID_PARTITION_OFFERED [deprecated]" },
{ PID_LIFESPAN, "PID_LIFESPAN" },
{ PID_TOPIC_DATA, "PID_TOPIC_DATA" },
{ PID_UNICAST_LOCATOR, "PID_UNICAST_LOCATOR" },
{ PID_MULTICAST_LOCATOR, "PID_MULTICAST_LOCATOR" },
{ PID_DEFAULT_UNICAST_LOCATOR, "PID_DEFAULT_UNICAST_LOCATOR" },
{ PID_METATRAFFIC_UNICAST_LOCATOR, "PID_METATRAFFIC_UNICAST_LOCATOR " },
{ PID_METATRAFFIC_MULTICAST_LOCATOR, "PID_METATRAFFIC_MULTICAST_LOCATOR" },
{ PID_PARTICIPANT_MANUAL_LIVELINESS_COUNT, "PID_PARTICIPANT_MANUAL_LIVELINESS_COUNT" },
{ PID_HISTORY, "PID_HISTORY" },
{ PID_RESOURCE_LIMIT, "PID_RESOURCE_LIMIT" },
{ PID_METATRAFFIC_MULTICAST_PORT, "PID_METATRAFFIC_MULTICAST_PORT" },
{ PID_EXPECTS_INLINE_QOS, "PID_EXPECTS_INLINE_QOS" },
{ PID_METATRAFFIC_UNICAST_IPADDRESS, "PID_METATRAFFIC_UNICAST_IPADDRESS" },
{ PID_PARTICIPANT_BUILTIN_ENDPOINTS, "PID_PARTICIPANT_BUILTIN_ENDPOINTS" },
{ PID_CONTENT_FILTER_PROPERTY, "PID_CONTENT_FILTER_PROPERTY" },
{ PID_PROPERTY_LIST_OLD, "PID_PROPERTY_LIST" },
{ PID_FILTER_SIGNATURE, "PID_FILTER_SIGNATURE" },
{ PID_COHERENT_SET, "PID_COHERENT_SET" },
{ PID_TYPECODE, "PID_TYPECODE" },
{ PID_PARTICIPANT_GUID, "PID_PARTICIPANT_GUID" },
{ PID_PARTICIPANT_ENTITY_ID, "PID_PARTICIPANT_ENTITY_ID" },
{ PID_GROUP_GUID, "PID_GROUP_GUID" },
{ PID_GROUP_ENTITY_ID, "PID_GROUP_ENTITY_ID" },
{ 0, NULL }
};
static const value_string liveliness_qos_vals[] = {
{ LIVELINESS_AUTOMATIC, "AUTOMATIC_LIVELINESS_QOS" },
{ LIVELINESS_BY_PARTICIPANT, "MANUAL_BY_PARTICIPANT_LIVELINESS_QOS" },
{ LIVELINESS_BY_TOPIC, "MANUAL_BY_TOPIC_LIVELINESS_QOS" },
{ 0, NULL }
};
static const value_string durability_qos_vals[] = {
{ DURABILITY_VOLATILE, "VOLATILE_DURABILITY_QOS" },
{ DURABILITY_TRANSIENT_LOCAL, "TRANSIENT_LOCAL_DURABILITY_QOS" },
{ DURABILITY_TRANSIENT, "TRANSIENT_DURABILITY_QOS" },
{ DURABILITY_PERSISTENT, "PERSISTENT_DURABILITY_QOS" },
{ 0, NULL }
};
static const value_string ownership_qos_vals[] = {
{ OWNERSHIP_SHARED, "SHARED_OWNERSHIP_QOS" },
{ OWNERSHIP_EXCLUSIVE, "EXCLUSIVE_OWNERSHIP_QOS" },
{ 0, NULL }
};
static const value_string presentation_qos_vals[] = {
{ PRESENTATION_INSTANCE, "INSTANCE_PRESENTATION_QOS" },
{ PRESENTATION_TOPIC, "TOPIC_PRESENTATION_QOS" },
{ PRESENTATION_GROUP, "GROUP_PRESENTATION_QOS" },
{ 0, NULL }
};
static const value_string history_qos_vals[] = {
{ HISTORY_KIND_KEEP_LAST, "KEEP_LAST_HISTORY_QOS" },
{ HISTORY_KIND_KEEP_ALL, "KEEP_ALL_HISTORY_QOS" },
{ 0, NULL }
};
static const value_string reliability_qos_vals[] = {
{ RELIABILITY_BEST_EFFORT, "BEST_EFFORT_RELIABILITY_QOS" },
{ RELIABILITY_RELIABLE, "RELIABLE_RELIABILITY_QOS" },
{ 0, NULL }
};
static const value_string destination_order_qos_vals[] = {
{ BY_RECEPTION_TIMESTAMP, "BY_RECEPTION_TIMESTAMP_DESTINATIONORDER_QOS" },
{ BY_SOURCE_TIMESTAMP, "BY_SOURCE_TIMESTAMP_DESTINATIONORDER_QOS" },
{ 0, NULL }
};
/* Flag Decoding defintions ***********************************************/
struct Flag_definition {
const char letter;
const char *description;
};
#define RESERVEDFLAG_CHAR ('_')
#define RESERVEDFLAG_STRING ("reserved bit")
static const struct Flag_definition PAD_FLAGS[] = {
{ RESERVEDFLAG_CHAR, RESERVEDFLAG_STRING }, /* Bit 7 */
{ RESERVEDFLAG_CHAR, RESERVEDFLAG_STRING }, /* Bit 6 */
{ RESERVEDFLAG_CHAR, RESERVEDFLAG_STRING }, /* Bit 5 */
{ RESERVEDFLAG_CHAR, RESERVEDFLAG_STRING }, /* Bit 4 */
{ RESERVEDFLAG_CHAR, RESERVEDFLAG_STRING }, /* Bit 3 */
{ RESERVEDFLAG_CHAR, RESERVEDFLAG_STRING }, /* Bit 2 */
{ RESERVEDFLAG_CHAR, RESERVEDFLAG_STRING }, /* Bit 1 */
{ 'E', "Endianness bit" } /* Bit 0 */
};
static const struct Flag_definition DATA_FLAGS[] = {
{ RESERVEDFLAG_CHAR, RESERVEDFLAG_STRING }, /* Bit 7 */
{ RESERVEDFLAG_CHAR, RESERVEDFLAG_STRING }, /* Bit 6 */
{ 'U', "Unregister flag" }, /* Bit 5 */
{ 'Q', "Inline QoS" }, /* Bit 4 */
{ 'H', "Hash key flag" }, /* Bit 3 */
{ 'A', "Alive flag" }, /* Bit 2 */
{ 'D', "Data present" }, /* Bit 1 */
{ 'E', "Endianness bit" } /* Bit 0 */
};
static const struct Flag_definition NOKEY_DATA_FLAGS[] = {
{ RESERVEDFLAG_CHAR, RESERVEDFLAG_STRING }, /* Bit 7 */
{ RESERVEDFLAG_CHAR, RESERVEDFLAG_STRING }, /* Bit 6 */
{ RESERVEDFLAG_CHAR, RESERVEDFLAG_STRING }, /* Bit 5 */
{ RESERVEDFLAG_CHAR, RESERVEDFLAG_STRING }, /* Bit 4 */
{ RESERVEDFLAG_CHAR, RESERVEDFLAG_STRING }, /* Bit 3 */
{ RESERVEDFLAG_CHAR, RESERVEDFLAG_STRING }, /* Bit 2 */
{ 'Q', "Inline QoS" }, /* Bit 1 */
{ 'E', "Endianness bit" } /* Bit 0 */
};
static const struct Flag_definition ACKNACK_FLAGS[] = {
{ RESERVEDFLAG_CHAR, RESERVEDFLAG_STRING }, /* Bit 7 */
{ RESERVEDFLAG_CHAR, RESERVEDFLAG_STRING }, /* Bit 6 */
{ RESERVEDFLAG_CHAR, RESERVEDFLAG_STRING }, /* Bit 5 */
{ RESERVEDFLAG_CHAR, RESERVEDFLAG_STRING }, /* Bit 4 */
{ RESERVEDFLAG_CHAR, RESERVEDFLAG_STRING }, /* Bit 3 */
{ RESERVEDFLAG_CHAR, RESERVEDFLAG_STRING }, /* Bit 2 */
{ 'F', "Final flag" }, /* Bit 1 */
{ 'E', "Endianness bit" } /* Bit 0 */
};
static const struct Flag_definition GAP_FLAGS[] = {
{ RESERVEDFLAG_CHAR, RESERVEDFLAG_STRING }, /* Bit 7 */
{ RESERVEDFLAG_CHAR, RESERVEDFLAG_STRING }, /* Bit 6 */
{ RESERVEDFLAG_CHAR, RESERVEDFLAG_STRING }, /* Bit 5 */
{ RESERVEDFLAG_CHAR, RESERVEDFLAG_STRING }, /* Bit 4 */
{ RESERVEDFLAG_CHAR, RESERVEDFLAG_STRING }, /* Bit 3 */
{ RESERVEDFLAG_CHAR, RESERVEDFLAG_STRING }, /* Bit 2 */
{ RESERVEDFLAG_CHAR, RESERVEDFLAG_STRING }, /* Bit 1 */
{ 'E', "Endianness bit" } /* Bit 0 */
};
static const struct Flag_definition HEARTBEAT_FLAGS[] = {
{ RESERVEDFLAG_CHAR, RESERVEDFLAG_STRING }, /* Bit 7 */
{ RESERVEDFLAG_CHAR, RESERVEDFLAG_STRING }, /* Bit 6 */
{ RESERVEDFLAG_CHAR, RESERVEDFLAG_STRING }, /* Bit 5 */
{ RESERVEDFLAG_CHAR, RESERVEDFLAG_STRING }, /* Bit 4 */
{ RESERVEDFLAG_CHAR, RESERVEDFLAG_STRING }, /* Bit 3 */
{ 'L', "Liveliness flag" }, /* Bit 2 */
{ 'F', "Final flag" }, /* Bit 1 */
{ 'E', "Endianness bit" } /* Bit 0 */
};
static const struct Flag_definition INFO_TS_FLAGS[] = {
{ RESERVEDFLAG_CHAR, RESERVEDFLAG_STRING }, /* Bit 7 */
{ RESERVEDFLAG_CHAR, RESERVEDFLAG_STRING }, /* Bit 6 */
{ RESERVEDFLAG_CHAR, RESERVEDFLAG_STRING }, /* Bit 5 */
{ RESERVEDFLAG_CHAR, RESERVEDFLAG_STRING }, /* Bit 4 */
{ RESERVEDFLAG_CHAR, RESERVEDFLAG_STRING }, /* Bit 3 */
{ RESERVEDFLAG_CHAR, RESERVEDFLAG_STRING }, /* Bit 2 */
{ 'T', "Timestamp flag" }, /* Bit 1 */
{ 'E', "Endianness bit" } /* Bit 0 */
};
static const struct Flag_definition INFO_SRC_FLAGS[] = {
{ RESERVEDFLAG_CHAR, RESERVEDFLAG_STRING }, /* Bit 7 */
{ RESERVEDFLAG_CHAR, RESERVEDFLAG_STRING }, /* Bit 6 */
{ RESERVEDFLAG_CHAR, RESERVEDFLAG_STRING }, /* Bit 5 */
{ RESERVEDFLAG_CHAR, RESERVEDFLAG_STRING }, /* Bit 4 */
{ RESERVEDFLAG_CHAR, RESERVEDFLAG_STRING }, /* Bit 3 */
{ RESERVEDFLAG_CHAR, RESERVEDFLAG_STRING }, /* Bit 2 */
{ RESERVEDFLAG_CHAR, RESERVEDFLAG_STRING }, /* Bit 1 */
{ 'E', "Endianness bit" } /* Bit 0 */
};
static const struct Flag_definition INFO_REPLY_IP4_FLAGS[] = {
{ RESERVEDFLAG_CHAR, RESERVEDFLAG_STRING }, /* Bit 7 */
{ RESERVEDFLAG_CHAR, RESERVEDFLAG_STRING }, /* Bit 6 */
{ RESERVEDFLAG_CHAR, RESERVEDFLAG_STRING }, /* Bit 5 */
{ RESERVEDFLAG_CHAR, RESERVEDFLAG_STRING }, /* Bit 4 */
{ RESERVEDFLAG_CHAR, RESERVEDFLAG_STRING }, /* Bit 3 */
{ RESERVEDFLAG_CHAR, RESERVEDFLAG_STRING }, /* Bit 2 */
{ 'M', "Multicast flag" }, /* Bit 1 */
{ 'E', "Endianness bit" } /* Bit 0 */
};
static const struct Flag_definition INFO_DST_FLAGS[] = {
{ RESERVEDFLAG_CHAR, RESERVEDFLAG_STRING }, /* Bit 7 */
{ RESERVEDFLAG_CHAR, RESERVEDFLAG_STRING }, /* Bit 6 */
{ RESERVEDFLAG_CHAR, RESERVEDFLAG_STRING }, /* Bit 5 */
{ RESERVEDFLAG_CHAR, RESERVEDFLAG_STRING }, /* Bit 4 */
{ RESERVEDFLAG_CHAR, RESERVEDFLAG_STRING }, /* Bit 3 */
{ RESERVEDFLAG_CHAR, RESERVEDFLAG_STRING }, /* Bit 2 */
{ RESERVEDFLAG_CHAR, RESERVEDFLAG_STRING }, /* Bit 1 */
{ 'E', "Endianness bit" } /* Bit 0 */
};
static const struct Flag_definition INFO_REPLY_FLAGS[] = {
{ RESERVEDFLAG_CHAR, RESERVEDFLAG_STRING }, /* Bit 7 */
{ RESERVEDFLAG_CHAR, RESERVEDFLAG_STRING }, /* Bit 6 */
{ RESERVEDFLAG_CHAR, RESERVEDFLAG_STRING }, /* Bit 5 */
{ RESERVEDFLAG_CHAR, RESERVEDFLAG_STRING }, /* Bit 4 */
{ RESERVEDFLAG_CHAR, RESERVEDFLAG_STRING }, /* Bit 3 */
{ RESERVEDFLAG_CHAR, RESERVEDFLAG_STRING }, /* Bit 2 */
{ 'M', "Multicast flag" }, /* Bit 1 */
{ 'E', "Endianness bit" } /* Bit 0 */
};
/***************************************************************************/
/***************************************************************************
* Function prototypes
* ~~~~~~~~~~~~~~~~~~~
*/
/* Utility to add elements to the protocol tree */
static void rtps_util_add_guid_prefix(proto_tree *, tvbuff_t *,
gint, int, int, int, int, int, const guint8 *);
static void rtps_util_add_generic_guid(proto_tree *, tvbuff_t *,
gint, const char *, guint8 *, gint);
static int rtps_util_add_bitmap(proto_tree *, tvbuff_t *,
gint, int, const char *);
static void rtps_util_decode_flags(proto_tree *, tvbuff_t *,
gint, guint8, const struct Flag_definition *);
/***************************************************************************/
/* Inline macros */
#define NEXT_guint16(tvb, offset, le) \
(le ? tvb_get_letohs(tvb, offset) : tvb_get_ntohs(tvb, offset))
#define NEXT_guint32(tvb, offset, le) \
(le ? tvb_get_letohl(tvb, offset) : tvb_get_ntohl(tvb, offset))
/* *********************************************************************** */
guint16 rtps_util_add_protocol_version(proto_tree *tree, /* Can NOT be NULL */
tvbuff_t * tvb,
gint offset) {
proto_item * ti;
proto_tree * version_tree;
guint16 version;
version = tvb_get_ntohs(tvb, offset);
ti = proto_tree_add_uint_format(tree, hf_rtps_protocol_version, tvb, offset, 2,
version, "Protocol version: %d.%d",
tvb_get_guint8(tvb, offset), tvb_get_guint8(tvb, offset+1));
version_tree = proto_item_add_subtree(ti, ett_rtps_proto_version);
proto_tree_add_item(version_tree, hf_rtps_protocol_version_major, tvb, offset, 1, ENC_NA);
proto_tree_add_item(version_tree, hf_rtps_protocol_version_minor, tvb, offset+1, 1, ENC_NA);
return version;
}
/* ------------------------------------------------------------------------- */
/* Interpret the next bytes as vendor ID. If proto_tree and field ID is
* provided, it can also set.
*/
void rtps_util_add_vendor_id(proto_tree *tree,
tvbuff_t * tvb,
gint offset) {
guint8 major, minor;
guint16 vendor_id;
major = tvb_get_guint8(tvb, offset);
minor = tvb_get_guint8(tvb, offset+1);
vendor_id = tvb_get_ntohs(tvb, offset);
proto_tree_add_uint_format_value(tree, hf_rtps_vendor_id, tvb, offset, 2, vendor_id,
"%02d.%02d (%s)", major, minor,
val_to_str_const(vendor_id, vendor_vals, "Unknown"));
}
/* ------------------------------------------------------------------------- */
/* Insert in the protocol tree the next 8 bytes interpreted as Locator_t
*
* Locator_t is a struct defined as:
* struct {
* long kind; // kind of locator
* unsigned long port;
* octet[16] address;
* } Locator_t;
*/
void rtps_util_add_locator_t(proto_tree *tree, packet_info *pinfo, tvbuff_t * tvb, gint offset,
gboolean little_endian, const guint8 * label) {
proto_item * ti;
proto_tree * locator_tree;
gint32 kind;
guint32 port;
ti = proto_tree_add_text(tree, tvb, offset, 24, "%s", label);
locator_tree = proto_item_add_subtree(ti, ett_rtps_locator);
kind = NEXT_guint32(tvb, offset, little_endian);
port = NEXT_guint32(tvb, offset+4, little_endian);
proto_tree_add_uint(locator_tree, hf_rtps_locator_kind, tvb, offset, 4, kind);
ti = proto_tree_add_int(locator_tree, hf_rtps_locator_port, tvb, offset+4, 4, port);
if (port == 0)
expert_add_info_format(pinfo, ti, PI_PROTOCOL, PI_WARN, "Invalid Port");
if (kind == LOCATOR_KIND_UDPV4) {
proto_tree_add_item(locator_tree, hf_rtps_locator_ipv4, tvb, offset+20, 4, ENC_BIG_ENDIAN);
} else {
proto_tree_add_item(locator_tree, hf_rtps_locator_ipv6, tvb, offset+8, 16, ENC_NA);
}
}
/* ------------------------------------------------------------------------- */
/* Insert in the protocol tree the next bytes interpreted as a list of
* Locators:
* - unsigned long numLocators
* - locator 1
* - locator 2
* - ...
* - locator n
* Returns the new offset after parsing the locator list
*/
int rtps_util_add_locator_list(proto_tree *tree, packet_info *pinfo, tvbuff_t * tvb,
gint offset, const guint8* label, gboolean little_endian) {
proto_item *ti;
proto_tree *locator_tree;
guint32 num_locators;
num_locators = NEXT_guint32(tvb, offset, little_endian);
if (tree) {
ti = proto_tree_add_text(tree,
tvb,
offset,
4,
"%s: %d Locators",
label,
num_locators);
} else {
return offset + 4 + ((num_locators > 0) ? (24 * num_locators) : 0);
}
offset += 4;
if (num_locators > 0) {
guint32 i;
char temp_buff[20];
locator_tree = proto_item_add_subtree(ti, ett_rtps_locator_udp_v4);
for (i = 0; i < num_locators; ++i) {
g_snprintf(temp_buff, 20, "Locator[%d]", i);
rtps_util_add_locator_t(locator_tree,
pinfo,
tvb,
offset,
little_endian,
temp_buff);
offset += 24;
}
}
return offset;
}
/* ------------------------------------------------------------------------- */
/* Insert in the protocol tree the next 4 bytes interpreted as IPV4Address_t
*/
void rtps_util_add_ipv4_address_t(proto_tree *tree, packet_info *pinfo, tvbuff_t * tvb, gint offset,
gboolean little_endian, int hf_item) {
guint32 addr;
proto_item* ti;
addr = NEXT_guint32(tvb, offset, little_endian);
ti = proto_tree_add_ipv4(tree, hf_item, tvb, offset, 4, addr);
if (addr == IPADDRESS_INVALID)
expert_add_info_format(pinfo, ti, PI_PROTOCOL, PI_WARN, IPADDRESS_INVALID_STRING);
}
/* ------------------------------------------------------------------------- */
/* Insert in the protocol tree the next 8 bytes interpreted as LocatorUDPv4
*
* LocatorUDPv4 is a struct defined as:
* struct {
* unsigned long address;
* unsigned long port;
* } LocatorUDPv4_t;
*
*/
void rtps_util_add_locator_udp_v4(proto_tree *tree, packet_info *pinfo, tvbuff_t * tvb,
gint offset, const guint8 * label, gboolean little_endian) {
proto_item * ti;
proto_tree * locator_tree;
guint32 port;
ti = proto_tree_add_text(tree, tvb, offset, 8, "%s", label);
locator_tree = proto_item_add_subtree(ti, ett_rtps_locator_udp_v4);
rtps_util_add_ipv4_address_t(locator_tree, pinfo, tvb, offset,
little_endian, hf_rtps_locator_udp_v4);
port = NEXT_guint32(tvb, offset+4, little_endian);
ti = proto_tree_add_uint(locator_tree, hf_rtps_locator_udp_v4_port, tvb, offset, 4, port);
if (port == PORT_INVALID)
expert_add_info_format(pinfo, ti, PI_PROTOCOL, PI_WARN, PORT_INVALID_STRING);
}
/* ------------------------------------------------------------------------- */
/* Insert in the protocol tree the next 8 bytes interpreted as GuidPrefix
* If tree is specified, it fills up the protocol tree item:
* - hf_rtps_guid_prefix
* - hf_rtps_host_id
* - hf_rtps_app_id
* - hf_rtps_app_id_instance_id
* - hf_rtps_app_id_app_kind
*
* If buffer is specified, it returns in it a string representation of the
* data read.
*/
static void rtps_util_add_guid_prefix(proto_tree *tree, /* Can be NULL */
tvbuff_t * tvb,
gint offset,
int hf_prefix, /* Cannot be 0 if tree != NULL */
int hf_host_id,
int hf_app_id,
int hf_app_id_instance_id,
int hf_app_id_app_kind,
const guint8 * label) {
guint64 prefix;
guint32 host_id, app_id, instance_id;
guint8 app_kind;
proto_item *ti;
proto_tree *guid_tree, *appid_tree;
const guint8 * safe_label = (label == NULL) ? (const guint8 *)"guidPrefix" : label;
/* Read values from TVB */
prefix = tvb_get_ntoh64(tvb, offset);
host_id = tvb_get_ntohl(tvb, offset);
app_id = tvb_get_ntohl(tvb, offset + 4);
instance_id = (app_id >> 8);
app_kind = (app_id & 0xff);
if (tree != NULL) {
ti = proto_tree_add_uint64_format(tree, hf_prefix, tvb, offset, 8, prefix,
"%s=%08x %08x { hostId=%08x, appId=%08x (%s: %06x) }",
safe_label, host_id, app_id, host_id, app_id,
val_to_str(app_kind, app_kind_vals, "%02x"),
instance_id);
guid_tree = proto_item_add_subtree(ti, ett_rtps_guid_prefix);
/* Host Id */
proto_tree_add_item(guid_tree, hf_host_id, tvb, offset, 4, ENC_BIG_ENDIAN);
/* AppId (root of the app_id sub-tree) */
ti = proto_tree_add_item(guid_tree, hf_app_id, tvb, offset+4, 4, ENC_BIG_ENDIAN);
appid_tree = proto_item_add_subtree(ti, ett_rtps_app_id);
/* InstanceId */
proto_tree_add_item(appid_tree, hf_app_id_instance_id, tvb, offset+4, 3, ENC_BIG_ENDIAN);
/* AppKind */
proto_tree_add_item(appid_tree, hf_app_id_app_kind, tvb, offset+7, 1, ENC_BIG_ENDIAN);
}
}
/* ------------------------------------------------------------------------- */
/* Insert the entityId from the next 4 bytes. Since there are more than
* one entityId, we need to specify also the IDs of the entityId (and its
* sub-components), as well as the label identifying it.
* Returns true if the entityKind is one of the NDDS built-in entities.
*/
int rtps_util_add_entity_id(proto_tree *tree, tvbuff_t * tvb, gint offset,
int hf_item, int hf_item_entity_key, int hf_item_entity_kind,
int subtree_entity_id, const char *label, guint32* entity_id_out) {
guint32 entity_id = tvb_get_ntohl(tvb, offset);
guint32 entity_key = (entity_id >> 8);
guint8 entity_kind = (entity_id & 0xff);
const char *str_predef = try_val_to_str(entity_id, entity_id_vals);
if (entity_id_out != NULL) {
*entity_id_out = entity_id;
}
if (tree != NULL) {
proto_tree * entity_tree;
proto_item * ti;
if (str_predef == NULL) {
/* entityId is not a predefined value, format it */
ti = proto_tree_add_uint_format(tree, hf_item, tvb, offset, 4, entity_id,
"%s: 0x%08x (%s: 0x%06x)",
label, entity_id,
val_to_str(entity_kind, entity_kind_vals, "unknown kind (%02x)"),
entity_key);
} else {
/* entityId is a predefined value */
ti = proto_tree_add_uint_format(tree, hf_item, tvb, offset, 4, entity_id,
"%s: %s (0x%08x)", label, str_predef, entity_id);
}
entity_tree = proto_item_add_subtree(ti, subtree_entity_id);
proto_tree_add_item(entity_tree, hf_item_entity_key, tvb, offset, 3, ENC_BIG_ENDIAN);
proto_tree_add_item(entity_tree, hf_item_entity_kind, tvb, offset+3, 1, ENC_BIG_ENDIAN);
}
/* is a built-in entity if the bit M and R (5 and 6) of the entityKind are set */
/* return ((entity_kind & 0xc0) == 0xc0); */
return ( entity_id == ENTITYID_BUILTIN_TOPIC_WRITER ||
entity_id == ENTITYID_BUILTIN_TOPIC_READER ||
entity_id == ENTITYID_BUILTIN_PUBLICATIONS_WRITER ||
entity_id == ENTITYID_BUILTIN_PUBLICATIONS_READER ||
entity_id == ENTITYID_BUILTIN_SUBSCRIPTIONS_WRITER ||
entity_id == ENTITYID_BUILTIN_SUBSCRIPTIONS_READER ||
entity_id == ENTITYID_BUILTIN_SDP_PARTICIPANT_WRITER ||
entity_id == ENTITYID_BUILTIN_SDP_PARTICIPANT_READER );
}
/* ------------------------------------------------------------------------- */
/* Insert the entityId from the next 4 bytes as a generic one (not connected
* to any protocol field). It simply insert the content as a simple text entry
* and returns in the passed buffer only the value (without the label).
*/
void rtps_util_add_generic_entity_id(proto_tree *tree,
tvbuff_t * tvb,
gint offset,
const char *label,
guint8 * buffer, /* Can be NULL */
gint buffer_size) {
guint32 entity_id = tvb_get_ntohl(tvb, offset);
guint32 entity_key = (entity_id >> 8);
guint8 entity_kind = (entity_id & 0xff);
const char *str_predef = try_val_to_str(entity_id, entity_id_vals);
guint8 temp_buffer[MAX_GUID_SIZE];
if (str_predef == NULL) {
/* entityId is not a predefined value, format it */
g_snprintf(temp_buffer, MAX_GUID_SIZE,
"0x%08x (%s: 0x%06x)",
entity_id,
val_to_str(entity_kind, entity_kind_vals,
"unknown kind (%02x)"),
entity_key);
} else {
/* entityId is a predefined value */
g_snprintf(temp_buffer, MAX_GUID_SIZE,
"%s (0x%08x)",
str_predef,
entity_id);
}
if (tree != NULL) {
proto_tree_add_text(tree,
tvb,
offset,
4,
"%s: %s",
label,
temp_buffer);
}
if (buffer != NULL) {
g_strlcpy(buffer, temp_buffer, buffer_size);
}
}
/* ------------------------------------------------------------------------- */
/* Interpret the next 12 octets as a generic GUID and insert it in the protocol
* tree as simple text (no reference fields are set).
* It is mostly used in situation where is not required to perform search for
* this kind of GUID (i.e. like in some DATA parameter lists).
*/
static void rtps_util_add_generic_guid(proto_tree *tree, /* Cannot be NULL */
tvbuff_t * tvb, /* Cannot be NULL */
gint offset,
const char *label, /* Cannot be NULL */
guint8 * buffer, /* Can be NULL */
gint buffer_size) {
guint32 host_id;
guint32 app_id;
guint8 app_kind;
guint32 instance_id;
guint32 entity_id;
guint32 entity_key;
guint8 entity_kind;
guint8 guid_raw[12];
const char * str_entity_kind;
const char * str_app_kind;
guint8 temp_buff[MAX_GUID_SIZE];
int i;
/* Read typed data */
host_id = tvb_get_ntohl(tvb, offset);
app_id = tvb_get_ntohl(tvb, offset + 4);
entity_id = tvb_get_ntohl(tvb, offset + 8);
/* Re-Read raw data */
for (i = 0; i < 12; ++i) {
guid_raw[i] = tvb_get_guint8(tvb, offset+i);
}
/* Split components from typed data */
instance_id = (app_id >> 8);
app_kind = (app_id & 0xff);
entity_key = (entity_id >> 8);
entity_kind = (entity_id & 0xff);
/* Lookup for predefined app kind and entity kind */
str_entity_kind = val_to_str(entity_kind, entity_kind_vals, "%02x");
str_app_kind = val_to_str(app_kind, app_kind_vals, "%02x");
/* Compose output buffer for raw guid */
g_snprintf(temp_buff, MAX_GUID_SIZE,
"%s=%02x%02x%02x%02x %02x%02x%02x%02x %02x%02x%02x%02x: "
"{ hostId=%08x, appId=%08x (%s: %06x), entityId=%08x (%s: %06x) }",
label,
guid_raw[0], guid_raw[1], guid_raw[2], guid_raw[3],
guid_raw[4], guid_raw[5], guid_raw[6], guid_raw[7],
guid_raw[8], guid_raw[9], guid_raw[10], guid_raw[11],
host_id,
app_id, str_app_kind, instance_id,
entity_id, str_entity_kind, entity_key);
proto_tree_add_text(tree, tvb, offset, 12, "%s", temp_buff);
if (buffer != NULL) {
g_strlcpy(buffer, temp_buff, buffer_size);
}
}
/* ------------------------------------------------------------------------- */
/* Insert in the protocol tree the next 8 bytes interpreted as sequence
* number.
*/
guint64 rtps_util_add_seq_number(proto_tree *tree,
tvbuff_t * tvb,
gint offset,
gboolean little_endian,
const char *label) {
guint64 hi = (guint64)NEXT_guint32(tvb, offset, little_endian);
guint64 lo = (guint64)NEXT_guint32(tvb, offset+4, little_endian);
guint64 all = (hi << 32) | lo;
proto_tree_add_int64_format(tree, hf_rtps_sm_seq_number, tvb, offset, 8,
all, "%s: %" G_GINT64_MODIFIER "u", label, all);
return all;
}
/* ------------------------------------------------------------------------- */
/* Insert in the protocol tree the next 8 bytes interpreted as NtpTime
*/
void rtps_util_add_ntp_time(proto_tree *tree,
tvbuff_t * tvb,
gint offset,
gboolean little_endian,
int hf_time) {
proto_tree_add_item(tree, hf_time, tvb, offset, 8,
ENC_TIME_NTP|(little_endian ? ENC_LITTLE_ENDIAN : ENC_BIG_ENDIAN));
}
/* ------------------------------------------------------------------------- */
/* Insert in the protocol tree the next data interpreted as a String
* Returns the new offset (after reading the string)
*/
gint rtps_util_add_string(proto_tree *tree, /* Can be NULL */
tvbuff_t * tvb,
gint offset,
int hf_item, /* Can be -1 (if label!=NULL) */
gboolean little_endian,
const guint8 * label, /* Can be NULL (if hf_item!=-1) */
guint8 * buffer, /* Can be NULL */
size_t buffer_size) {
guint8 * retVal = NULL;
guint32 size = NEXT_guint32(tvb, offset, little_endian);
if (size > 0) {
retVal = tvb_get_ephemeral_string(tvb, offset+4, size);
}
if (tree != NULL) {
if (hf_item != -1) {
proto_item * hidden_item;
hidden_item = proto_tree_add_string(tree,
hf_item,
tvb,
offset,
size+4,
(size == 0) ? (guint8 *)"" : retVal);
PROTO_ITEM_SET_HIDDEN(hidden_item);
}
proto_tree_add_text(tree,
tvb,
offset,
size+4,
"%s: \"%s\"",
((label != NULL) ? label : (const guint8 *)"value") ,
(size == 0) ? (guint8 *)"" : retVal);
}
if (buffer != NULL) {
if (size == 0) {
buffer[0] = '\0';
} else {
g_snprintf(buffer, (gulong) buffer_size, "%s", retVal);
}
}
/* NDDS align strings at 4-bytes word. So:
* string_length: 4 -> buffer_length = 4;
* string_length: 5 -> buffer_length = 8;
* string_length: 6 -> buffer_length = 8;
* string_length: 7 -> buffer_length = 8;
* string_length: 8 -> buffer_length = 8;
* ...
*/
return offset + 4 + ((size + 3) & 0xfffffffc);
}
/* ------------------------------------------------------------------------- */
/* Insert in the protocol tree the next data interpreted as a port (unsigned
* 32-bit integer)
*/
void rtps_util_add_port(proto_tree *tree, packet_info *pinfo, tvbuff_t * tvb,
gint offset, gboolean little_endian, int hf_item) {
proto_item* ti;
guint32 port = NEXT_guint32(tvb, offset+4, little_endian);
ti = proto_tree_add_uint(tree, hf_item, tvb, offset, 4, port);
if (port == PORT_INVALID)
expert_add_info_format(pinfo, ti, PI_PROTOCOL, PI_WARN, PORT_INVALID_STRING);
}
/* ------------------------------------------------------------------------- */
/* Insert in the protocol tree the next bytes interpreted as
* DurabilityServiceQosPolicy
*/
void rtps_util_add_durability_service_qos(proto_tree *tree,
tvbuff_t * tvb,
gint offset,
gboolean little_endian) {
proto_item *ti;
proto_tree *subtree;
ti = proto_tree_add_text(tree, tvb, offset, 28, "PID_DURABILITY_SERVICE");
subtree = proto_item_add_subtree(ti, ett_rtps_durability_service);
rtps_util_add_ntp_time(subtree, tvb, offset, little_endian, hf_rtps_durability_service_cleanup_delay);
proto_tree_add_item(subtree, hf_rtps_durability_service_history_kind, tvb, offset+8, 4,
little_endian ? ENC_LITTLE_ENDIAN : ENC_BIG_ENDIAN);
proto_tree_add_item(subtree, hf_rtps_durability_service_history_depth, tvb, offset+12, 4,
little_endian ? ENC_LITTLE_ENDIAN : ENC_BIG_ENDIAN);
proto_tree_add_item(subtree, hf_rtps_durability_service_max_samples, tvb, offset+16, 4,
little_endian ? ENC_LITTLE_ENDIAN : ENC_BIG_ENDIAN);
proto_tree_add_item(subtree, hf_rtps_durability_service_max_instances, tvb, offset+20, 4,
little_endian ? ENC_LITTLE_ENDIAN : ENC_BIG_ENDIAN);
proto_tree_add_item(subtree, hf_rtps_durability_service_max_samples_per_instances, tvb, offset+24, 4,
little_endian ? ENC_LITTLE_ENDIAN : ENC_BIG_ENDIAN);
}
/* ------------------------------------------------------------------------- */
/* Insert in the protocol tree the next bytes interpreted as Liveliness
* QoS Policy structure.
*/
void rtps_util_add_liveliness_qos(proto_tree *tree, tvbuff_t * tvb, gint offset, gboolean little_endian) {
proto_item *ti;
proto_tree *subtree;
ti = proto_tree_add_text(tree, tvb, offset, 12, "PID_LIVELINESS");
subtree = proto_item_add_subtree(ti, ett_rtps_liveliness);
proto_tree_add_item(subtree, hf_rtps_liveliness_kind, tvb, offset, 4,
little_endian ? ENC_LITTLE_ENDIAN : ENC_BIG_ENDIAN);
rtps_util_add_ntp_time(subtree, tvb, offset+4, little_endian, hf_rtps_liveliness_lease_duration);
}
/* ------------------------------------------------------------------------- */
/* Insert in the protocol tree the next bytes interpreted as Sequence of
* Strings.
* The formatted buffer is: "string1", "string2", "string3", ...
* Returns the new updated offset
*/
gint rtps_util_add_seq_string(proto_tree *tree, /* Can NOT be NULL */
tvbuff_t * tvb,
gint offset,
gboolean little_endian,
int param_length,
const char *label,
guint8 * buffer, /* Can NOT be NULL */
gint buffer_size) {
guint32 num_strings;
guint32 i;
proto_tree *string_tree;
proto_item *ti;
char temp_buff[MAX_LABEL_SIZE];
guint8 overview_buffer[MAX_LABEL_SIZE];
num_strings = NEXT_guint32(tvb, offset, little_endian);
proto_tree_add_text(tree,
tvb,
offset,
4,
"size: %d", num_strings);
offset += 4;
/* Create the string node with a fake string, the replace it later */
ti = proto_tree_add_text(tree,
tvb,
offset,
param_length-8,
"Strings");
string_tree = proto_item_add_subtree(ti, ett_rtps_seq_string);
overview_buffer[0] = '\0';
for (i = 0; i < num_strings; ++i) {
g_snprintf(temp_buff, MAX_LABEL_SIZE,
"%s[%d]",
label,
i);
offset = rtps_util_add_string(string_tree,
tvb,
offset,
-1,
little_endian,
temp_buff,
overview_buffer+strlen(overview_buffer),
MAX_LABEL_SIZE-strlen(overview_buffer));
}
proto_item_set_text(ti,
"%s: %s",
label,
overview_buffer);
if (buffer != NULL) {
g_strlcpy(buffer, overview_buffer, buffer_size);
}
return offset;
}
/* ------------------------------------------------------------------------- */
/* Insert in the protocol tree the next bytes interpreted as Sequence of
* longs.
* The formatted buffer is: val1, val2, val3, ...
* Returns the new updated offset
*/
gint rtps_util_add_seq_ulong(proto_tree *tree, tvbuff_t * tvb, gint offset, int hf_item,
gboolean little_endian, int param_length _U_, const char *label) {
guint32 num_elem;
guint32 i;
proto_tree *string_tree;
proto_item *ti;
num_elem = NEXT_guint32(tvb, offset, little_endian);
offset += 4;
/* Create the string node with an empty string, the replace it later */
ti = proto_tree_add_text(tree, tvb, offset, num_elem*4, "%s (%d elements)", label, num_elem);
string_tree = proto_item_add_subtree(ti, ett_rtps_seq_ulong);
for (i = 0; i < num_elem; ++i) {
proto_tree_add_item(string_tree, hf_item, tvb, offset, 4, little_endian ? ENC_LITTLE_ENDIAN : ENC_BIG_ENDIAN);
offset += 4;
}
return offset;
}
#define LONG_ALIGN(x) (x = (x+3)&0xfffffffc)
#define SHORT_ALIGN(x) (x = (x+1)&0xfffffffe)
#define MAX_ARRAY_DIMENSION 10
#define KEY_COMMENT (" //@key")
/* ------------------------------------------------------------------------- */
static const char * rtps_util_typecode_id_to_string(guint32 typecode_id) {
switch(typecode_id) {
case RTI_CDR_TK_ENUM: return "enum";
case RTI_CDR_TK_UNION: return "union";
case RTI_CDR_TK_STRUCT: return "struct";
case RTI_CDR_TK_LONG: return "long";
case RTI_CDR_TK_SHORT: return "short";
case RTI_CDR_TK_USHORT: return "unsigned short";
case RTI_CDR_TK_ULONG: return "unsigned long";
case RTI_CDR_TK_FLOAT: return "float";
case RTI_CDR_TK_DOUBLE: return "double";
case RTI_CDR_TK_BOOLEAN:return "boolean";
case RTI_CDR_TK_CHAR: return "char";
case RTI_CDR_TK_OCTET: return "octet";
case RTI_CDR_TK_LONGLONG:return "longlong";
case RTI_CDR_TK_ULONGLONG: return "unsigned long long";
case RTI_CDR_TK_LONGDOUBLE: return "long double";
case RTI_CDR_TK_WCHAR: return "wchar";
case RTI_CDR_TK_WSTRING:return "wstring";
case RTI_CDR_TK_STRING: return "string";
case RTI_CDR_TK_SEQUENCE: return "sequence";
case RTI_CDR_TK_ARRAY: return "array";
case RTI_CDR_TK_ALIAS: return "alias";
case RTI_CDR_TK_VALUE: return "valuetype";
case RTI_CDR_TK_NULL:
default:
return "<unknown type>";
}
}
/* ------------------------------------------------------------------------- */
/* Insert in the protocol tree the next bytes interpreted as typecode info
* Returns the number of bytes parsed
*/
static gint rtps_util_add_typecode(proto_tree *tree,
tvbuff_t * tvb,
gint offset,
gboolean little_endian,
int indent_level,
int is_pointer,
guint16 bitfield,
int is_key,
const gint offset_begin,
char * name,
int seq_max_len, /* -1 = not a sequence field */
guint32 * arr_dimension, /* if !NULL: array of 10 int */
int ndds_40_hack) {
const gint original_offset = offset;
guint32 tk_id;
guint16 tk_size;
unsigned int i;
char* indent_string;
gint retVal;
char type_name[40];
/* Structure of the typecode data:
* Offset | Size | Field | Notes
* ----------|-------|------------------------------|---------------------
* ? | ? | pad? |
* 0 | 4 | RTI_CDR_TK_XXXXX | 4 bytes aligned
* 4 | 2 | length the struct |
*/
/* Calc indent string */
indent_string = (char *)ep_alloc((indent_level*2)+1);
memset(indent_string, ' ', indent_level*2);
indent_string[indent_level*2] = '\0';
/* Gets TK ID */
LONG_ALIGN(offset);
tk_id = NEXT_guint32(tvb, offset, little_endian);
offset += 4;
/* Gets TK size */
tk_size = NEXT_guint16(tvb, offset, little_endian);
offset += 2;
retVal = tk_size + 6; /* 6 = 4 (typecode ID) + 2 (size) */
/* The first bit of typecode is set to 1, clear it */
tk_id &= 0x7fffffff;
/* HACK: NDDS 4.0 and NDDS 4.1 has different typecode ID list.
* The ID listed in the RTI_CDR_TK_XXXXX are the one from NDDS 4.1
* In order to correctly dissect NDDS 4.0 packets containing typecode
* information, we check if the ID of the element at level zero is a
* struct or union. If not, it means we are dissecting a ndds 4.0 packet
* (and we can decrement the ID to match the correct values).
*/
if (indent_level == 0) {
if (tk_id == RTI_CDR_TK_OCTET) {
ndds_40_hack = 1;
}
}
if (ndds_40_hack) {
++tk_id;
}
g_strlcpy(type_name, rtps_util_typecode_id_to_string(tk_id), 40);
/* Structure of the typecode data:
*
* <type_code_header> ::=
* <kind>
* <type_code_length>
*
* <kind> ::= long (0=TK_NULL, 1=TK_SHORT...)
* <type_code_length> ::= unsugned short
*
*/
switch(tk_id) {
/* Structure of the typecode data:
*
* <union_type_code> ::=
* <type_code_header>
* <name>
* <default_index>
* <discriminator_type_code>
* <member_count>
* <union_member>+
* <union_member> ::= <member_length><name><union_member_detail>
* <member_length> ::= unsigned short
* <name> ::= <string>
* <string> ::= <length>char+<eol>
* <length> ::= unsigned long
* <eol> ::= (char)0
*
* <union_member_detail> ::= <is_pointer>
* <labels_count>
* <label>+
* <type_code>
* <labels_count> ::= unsigned long
* <label> ::= long
*
*/
case RTI_CDR_TK_UNION: {
guint32 struct_name_len;
gint8 * struct_name;
const char * discriminator_name = "<unknown>"; /* for unions */
char * discriminator_enum_name = NULL; /* for unions with enum discriminator */
/*guint32 defaultIdx;*/ /* Currently is ignored */
guint32 disc_id; /* Used temporarily to populate 'discriminator_name' */
guint16 disc_size; /* Currently is ignored */
guint32 disc_offset_begin;
guint32 num_members;
guint16 member_length;
guint32 member_name_len;
guint8 *member_name = NULL;
guint8 member_is_pointer;
guint32 next_offset;
guint32 field_offset_begin;
guint32 member_label_count;
gint32 member_label;
guint32 discriminator_enum_name_length;
guint j;
/* - - - - - - - Union name - - - - - - - */
/* Pad-align */
LONG_ALIGN(offset);
/* Get structure name length */
struct_name_len = NEXT_guint32(tvb, offset, little_endian);
offset += 4;
struct_name = tvb_get_ephemeral_string(tvb, offset, struct_name_len);
offset += struct_name_len;
/* - - - - - - - Default index - - - - - - - */
LONG_ALIGN(offset);
/*defaultIdx = NEXT_guint32(tvb, offset, little_endian);*/
offset += 4;
/* - - - - - - - Discriminator type code - - - - - - - */
/* We don't recursively dissect everything, instead we just read the type */
disc_id = NEXT_guint32(tvb, offset, little_endian);
offset += 4;
disc_size = NEXT_guint16(tvb, offset, little_endian);
offset += 2;
disc_offset_begin = offset;
disc_id &= 0x7fffffff;
discriminator_name = rtps_util_typecode_id_to_string(disc_id);
if (disc_id == RTI_CDR_TK_ENUM) {
/* Enums has also a name that we should print */
LONG_ALIGN(offset);
discriminator_enum_name_length = NEXT_guint32(tvb, offset, little_endian);
discriminator_enum_name = tvb_get_ephemeral_string(tvb, offset+4, discriminator_enum_name_length);
}
offset = disc_offset_begin + disc_size;
#if 0
field_offset_begin = offset;
offset += rtps_util_add_typecode(
tree,
tvb,
offset,
little_endian,
indent_level+1,
0,
0,
0,
field_offset_begin,
member_name,
-1,
NULL,
ndds_40_hack);
#endif
/* Add the entry of the union in the tree */
proto_tree_add_text(tree,
tvb,
original_offset,
retVal,
"%sunion %s (%s%s%s) {",
indent_string,
struct_name,
discriminator_name,
(discriminator_enum_name ? " " : ""),
(discriminator_enum_name ? discriminator_enum_name : ""));
if (seq_max_len != -1) {
/* We're dissecting a sequence of struct, bypass the seq definition */
g_snprintf(type_name, 40, "%s", struct_name);
break;
}
/* - - - - - - - Number of members - - - - - - - */
LONG_ALIGN(offset);
num_members = NEXT_guint32(tvb, offset, little_endian);
offset += 4;
/* - - - - - - - <union_member>+ - - - - - - - */
next_offset = offset;
for (i = 0; i < num_members; ++i) {
/* Safety: this theoretically should be the same already */
field_offset_begin = offset = next_offset;
SHORT_ALIGN(offset);
/* member's length */
member_length = NEXT_guint16(tvb, offset, little_endian);
offset += 2;
next_offset = offset + member_length;
/* Name length */
LONG_ALIGN(offset);
member_name_len = NEXT_guint32(tvb, offset, little_endian);
offset += 4;
/* Name */
member_name = tvb_get_ephemeral_string(tvb, offset, member_name_len);
offset += member_name_len;
/* is Pointer ? */
member_is_pointer = tvb_get_guint8(tvb, offset);
offset++;
/* Label count */
LONG_ALIGN(offset);
member_label_count = NEXT_guint32(tvb, offset, little_endian);
offset += 4;
for (j = 0; j < member_label_count; ++j) {
/* Label count */
LONG_ALIGN(offset);
member_label = NEXT_guint32(tvb, offset, little_endian);
offset += 4;
/* Add the entry of the union in the tree */
proto_tree_add_text(tree,
tvb,
field_offset_begin,
retVal,
"%s case %d:",
indent_string,
member_label);
}
offset += rtps_util_add_typecode(
tree,
tvb,
offset,
little_endian,
indent_level+2,
member_is_pointer,
0,
0,
field_offset_begin,
member_name,
-1,
NULL,
ndds_40_hack);
}
/* Finally prints the name of the struct (if provided) */
g_strlcpy(type_name, "}", 40);
break;
} /* end of case UNION */
case RTI_CDR_TK_ENUM:
case RTI_CDR_TK_STRUCT: {
/* Structure of the typecode data:
*
* <union_type_code> ::=
* <type_code_header>
* <name>
* <default_index>
* <discriminator_type_code>
* <member_count>
* <member>+
*
* <struct_type_code> ::=
* <type_code_header>
* <name>
* <member_count>
* <member>+
*
* <name> ::= <string>
* <string> ::= <length>char+<eol>
* <length> ::= unsigned long
* <eol> ::= (char)0
* <member_count> ::= unsigned long
*
* STRUCT / UNION:
* Foreach member {
* - A2: 2: member length
* - A4: 4: member name length
* - n: member name
* - 1: isPointer?
* - A2 2: bitfield bits (-1=none)
* - 1: isKey?
* - A4 4: Typecode ID
* - A2 2: length
* }
*
* ENUM:
* Foreach member {
* - A2: 2: member length
* - A4: 4: member name length
* - n: member name
* - A4: 4: ordinal number
*
* -> ----------------------------------------------------- <-
* -> The alignment pad bytes belong to the FOLLOWING field <-
* -> A4 = 4 bytes alignment, A2 = 2 bytes alignment <-
* -> ----------------------------------------------------- <-
*/
guint32 struct_name_len;
gint8 * struct_name;
guint32 num_members;
guint16 member_length;
guint8 member_is_pointer;
guint16 member_bitfield;
guint8 member_is_key;
guint32 member_name_len;
guint8 *member_name = NULL;
guint32 next_offset;
guint32 field_offset_begin;
guint32 ordinal_number;
const char * typecode_name;
/* Pad-align */
LONG_ALIGN(offset);
/* Get structure name length */
struct_name_len = NEXT_guint32(tvb, offset, little_endian);
offset += 4;
/* struct name */
struct_name = tvb_get_ephemeral_string(tvb, offset, struct_name_len);
offset += struct_name_len;
if (tk_id == RTI_CDR_TK_ENUM) {
typecode_name = "enum";
} else {
typecode_name = "struct";
}
if (seq_max_len != -1) {
/* We're dissecting a sequence of struct, bypass the seq definition */
g_snprintf(type_name, 40, "%s", struct_name);
break;
}
/* Prints it */
proto_tree_add_text(tree,
tvb,
original_offset,
retVal,
"%s%s %s {",
indent_string,
typecode_name,
struct_name);
/* PAD align */
LONG_ALIGN(offset);
/* number of members */
num_members = NEXT_guint32(tvb, offset, little_endian);
offset += 4;
next_offset = offset;
for (i = 0; i < num_members; ++i) {
/* Safety: this theoretically should be the same already */
field_offset_begin = offset = next_offset;
SHORT_ALIGN(offset);
/* member's length */
member_length = NEXT_guint16(tvb, offset, little_endian);
offset += 2;
next_offset = offset + member_length;
/* Name length */
LONG_ALIGN(offset);
member_name_len = NEXT_guint32(tvb, offset, little_endian);
offset += 4;
/* Name */
member_name = tvb_get_ephemeral_string(tvb, offset, member_name_len);
offset += member_name_len;
if (tk_id == RTI_CDR_TK_ENUM) {
/* ordinal number */
LONG_ALIGN(offset);
ordinal_number = NEXT_guint32(tvb, offset, little_endian);
offset += 4;
proto_tree_add_text(tree,
tvb,
field_offset_begin,
(offset-field_offset_begin),
"%s %s = %d;",
indent_string,
member_name,
ordinal_number);
} else {
/* Structs */
/* is Pointer ? */
member_is_pointer = tvb_get_guint8(tvb, offset);
offset++;
/* Bitfield */
SHORT_ALIGN(offset);
member_bitfield = NEXT_guint16(tvb, offset, little_endian);
offset += 2; /* pad will be added by typecode dissector */
/* is Key ? */
member_is_key = tvb_get_guint8(tvb, offset);
offset++;
offset += rtps_util_add_typecode(
tree,
tvb,
offset,
little_endian,
indent_level+1,
member_is_pointer,
member_bitfield,
member_is_key,
field_offset_begin,
member_name,
-1,
NULL,
ndds_40_hack);
}
}
/* Finally prints the name of the struct (if provided) */
g_strlcpy(type_name, "}", 40);
break;
}
case RTI_CDR_TK_WSTRING:
case RTI_CDR_TK_STRING: {
/* Structure of the typecode data:
* Offset | Size | Field | Notes
* ----------|-------|------------------------------|---------------------
* 6 | 2 | pad |
* 8 | 4 | String length | 4-bytes aligned
*/
guint32 string_length;
LONG_ALIGN(offset);
string_length = NEXT_guint32(tvb, offset, little_endian);
offset += 4;
g_snprintf(type_name, 40, "%s<%d>",
(tk_id == RTI_CDR_TK_STRING) ? "string" : "wstring",
string_length);
break;
}
case RTI_CDR_TK_SEQUENCE: {
/* Structure of the typecode data:
*
* - A4: 4: Sequence max length
* - the sequence typecode
*/
guint32 seq_max_len2;
LONG_ALIGN(offset);
seq_max_len2 = NEXT_guint32(tvb, offset, little_endian);
offset += 4;
/* Recursive decode seq typecode */
/*offset += */rtps_util_add_typecode(
tree,
tvb,
offset,
little_endian,
indent_level,
is_pointer,
bitfield,
is_key,
offset_begin,
name,
seq_max_len2,
NULL,
ndds_40_hack);
/* Differently from the other typecodes, the line has been already printed */
return retVal;
}
case RTI_CDR_TK_ARRAY: {
/* Structure of the typecode data:
*
* - A4: 4: number of dimensions
* - A4: 4: dim1
* - <A4: 4: dim2>
* - ...
* - the array typecode
*/
guint32 size[MAX_ARRAY_DIMENSION]; /* Max dimensions */
guint32 dim_max;
LONG_ALIGN(offset);
dim_max = NEXT_guint32(tvb, offset, little_endian);
offset += 4;
for (i = 0; i < MAX_ARRAY_DIMENSION; ++i) size[i] = 0;
for (i = 0; i < dim_max; ++i) {
size[i] = NEXT_guint32(tvb, offset, little_endian);
offset += 4;
}
/* Recursive decode seq typecode */
/*offset += */rtps_util_add_typecode(
tree,
tvb,
offset,
little_endian,
indent_level,
is_pointer,
bitfield,
is_key,
offset_begin,
name,
-1,
size,
ndds_40_hack);
/* Differently from the other typecodes, the line has been already printed */
return retVal;
}
case RTI_CDR_TK_ALIAS: {
/* Structure of the typecode data:
*
* - A4: 4: alias name size
* - A4: 4: alias name
* - A4: 4: the alias typecode
*/
guint32 alias_name_length;
guint8 *alias_name;
LONG_ALIGN(offset);
alias_name_length = NEXT_guint32(tvb, offset, little_endian);
offset += 4;
alias_name = tvb_get_ephemeral_string(tvb, offset, alias_name_length);
offset += alias_name_length;
g_strlcpy(type_name, alias_name, 40);
break;
}
/*
* VALUETYPES:
* - A4: 4: name length
* - n: name
* - A2: type modifier
* - A4: base type code
* - A4: number of members
* Foreach member: (it's just like a struct)
*
*/
case RTI_CDR_TK_VALUE: {
/* Not fully dissected for now */
/* Pad-align */
guint32 value_name_len;
gint8 * value_name;
LONG_ALIGN(offset);
/* Get structure name length */
value_name_len = NEXT_guint32(tvb, offset, little_endian);
offset += 4;
/* value name */
value_name = tvb_get_ephemeral_string(tvb, offset, value_name_len);
offset += value_name_len;
g_snprintf(type_name, 40, "valuetype %s", value_name);
break;
}
} /* switch(tk_id) */
/* Sequence print */
if (seq_max_len != -1) {
proto_tree_add_text(tree,
tvb,
offset_begin,
(offset-offset_begin),
"%ssequence<%s, %d> %s%s;%s",
indent_string,
type_name,
seq_max_len,
is_pointer ? "*" : "",
name ? name : "",
is_key ? KEY_COMMENT : "");
return retVal;
}
/* Array print */
if (arr_dimension != NULL) {
/* Printing an array */
emem_strbuf_t *dim_str = ep_strbuf_new_label(NULL);
for (i = 0; i < MAX_ARRAY_DIMENSION; ++i) {
if (arr_dimension[i] != 0) {
ep_strbuf_append_printf(dim_str, "[%d]", arr_dimension[i]);
} else {
break;
}
}
proto_tree_add_text(tree,
tvb,
offset_begin,
(offset-offset_begin),
"%s%s %s%s;%s",
indent_string,
type_name,
name ? name : "",
dim_str->str,
is_key ? KEY_COMMENT : "");
return retVal;
}
/* Bitfield print */
if (bitfield != 0xffff && name != NULL && is_pointer == 0) {
proto_tree_add_text(tree,
tvb,
offset_begin,
(offset-offset_begin),
"%s%s %s:%d;%s",
indent_string,
type_name,
name ? name : "",
bitfield,
is_key ? KEY_COMMENT : "");
return retVal;
}
/* Everything else */
proto_tree_add_text(tree,
tvb,
offset_begin,
(offset-offset_begin),
"%s%s%s%s%s;%s",
indent_string,
type_name,
name ? " " : "",
is_pointer ? "*" : "",
name ? name : "",
is_key ? KEY_COMMENT : "");
return retVal;
}
/* ------------------------------------------------------------------------- */
/* Insert in the protocol tree the next bytes interpreted as Sequence of
* Octects.
* The formatted buffer is: [ 0x01, 0x02, 0x03, 0x04, ...]
* The maximum number of elements displayed is 10, after that a '...' is
* inserted.
*/
void rtps_util_add_seq_octets(proto_tree *tree, packet_info *pinfo, tvbuff_t* tvb,
gint offset, gboolean little_endian, int param_length, int hf_id) {
guint32 seq_length;
proto_item *ti;
seq_length = NEXT_guint32(tvb, offset, little_endian);
ti = proto_tree_add_text(tree, tvb, offset, 4, "sequenceSize: %d octects", seq_length);
offset += 4;
if (param_length < 4 + (int)seq_length) {
expert_add_info_format(pinfo, ti, PI_PROTOCOL, PI_WARN, "ERROR: Parameter value too small");
return;
}
proto_tree_add_item(tree, hf_id, tvb, offset+4, seq_length,
little_endian ? ENC_LITTLE_ENDIAN : ENC_BIG_ENDIAN);
}
/* ------------------------------------------------------------------------- */
/* Insert in the protocol tree the next bytes interpreted as a Bitmap
* struct {
* SequenceNumber_t bitmapBase;
* sequence<long, 8> bitmap;
* } SequenceNumberSet;
*
* Returns the new offset after reading the bitmap.
*/
static int rtps_util_add_bitmap(proto_tree *tree,
tvbuff_t * tvb,
gint offset,
gboolean little_endian,
const char *label _U_) {
guint64 seq_base;
gint32 num_bits;
guint32 data;
char temp_buff[MAX_BITMAP_SIZE];
int i, j, idx;
proto_item * ti;
proto_tree * bitmap_tree;
const gint original_offset = offset;
guint32 datamask;
/* Bitmap base sequence number */
seq_base = rtps_util_add_seq_number(NULL,
tvb,
offset,
little_endian,
NULL);
offset += 8;
/* Reads the bitmap size */
num_bits = NEXT_guint32(tvb, offset, little_endian);
offset += 4;
/* Reads the bits (and format the print buffer) */
idx = 0;
for (i = 0; (i < num_bits) && (idx <= num_bits) && (idx < MAX_BITMAP_SIZE-1); i += 32) {
data = NEXT_guint32(tvb, offset, little_endian);
offset += 4;
for (j = 0; j < 32; ++j) {
datamask = (1 << (31-j));
temp_buff[idx] = ((data & datamask) == datamask) ? '1':'0';
++idx;
if (idx > num_bits) {
break;
}
if (idx >= MAX_BITMAP_SIZE-1) {
break;
}
}
}
temp_buff[idx] = '\0';
/* removes all the ending '0' */
for (i = (int) strlen(temp_buff) - 1; (i>0 && temp_buff[i] == '0'); --i) {
temp_buff[i] = '\0';
}
ti = proto_tree_add_text(tree,
tvb,
original_offset,
offset-original_offset,
"%s: %" G_GINT64_MODIFIER "u/%d:%s",
label,
seq_base,
num_bits,
temp_buff);
bitmap_tree = proto_item_add_subtree(ti, ett_rtps_bitmap);
proto_tree_add_text(bitmap_tree,
tvb,
original_offset,
8,
"bitmapBase: %" G_GINT64_MODIFIER "u",
seq_base);
proto_tree_add_text(bitmap_tree,
tvb,
original_offset + 8,
4,
"numBits: %u",
num_bits);
if (temp_buff[0] != '\0') {
proto_tree_add_text(bitmap_tree,
tvb,
original_offset + 12,
offset - original_offset - 12,
"bitmap: %s",
temp_buff);
}
return offset;
}
/* ------------------------------------------------------------------------- */
/* Decode the submessage flags
*/
static void rtps_util_decode_flags(proto_tree * tree,
tvbuff_t *tvb,
gint offset,
guint8 flags,
const struct Flag_definition * flag_def) {
proto_item * ti;
proto_tree * flags_tree;
int i, j;
char flags_str[MAX_FLAG_SIZE];
flags_str[0] = '\0';
for (i = 0; i < 8; ++i) {
g_snprintf(flags_str + (2 * i), MAX_FLAG_SIZE - (2 * i), "%c ",
((flags & (1<<(7-i))) ? flag_def[i].letter : RESERVEDFLAG_CHAR));
}
ti = proto_tree_add_uint_format(tree,
hf_rtps_sm_flags,
tvb,
offset,
1,
flags,
"Flags: 0x%02x (%s)",
flags,
flags_str);
flags_tree = proto_item_add_subtree(ti,
ett_rtps_flags);
for (i = 0; i < 8; ++i) {
int is_set = (flags & (1 << (7-i)));
for (j = 0; j < 8; ++j) {
flags_str[j] = (i == j) ? (is_set ? '1' : '0') : '.';
}
flags_str[8] = '\0';
proto_tree_add_text(flags_tree,
tvb,
offset,
1,
"%s = %s: %s",
flags_str,
flag_def[i].description,
is_set ? "Set" : "Not set");
}
}
/* *********************************************************************** */
/* * Parameter Sequence dissector * */
/* *********************************************************************** */
/*
* It returns the new offset representing the point where the parameter
* sequence terminates.
* In case of protocol error, it returns 0 (cannot determine the end of
* the sequence, the caller should be responsible to find the end of the
* section if possible or pass the error back and abort dissecting the
* current packet).
* If no error occurred, the returned value is ALWAYS > than the offset passed.
*/
#define ENSURE_LENGTH(size) \
if (param_length < size) { \
expert_add_info_format(pinfo, param_len_item, PI_PROTOCOL, PI_WARN, \
"ERROR: parameter value too small (must be at least %d octects)", size); \
break; \
}
static gint dissect_parameter_sequence(proto_tree *tree,
packet_info *pinfo,
tvbuff_t *tvb,
gint offset,
gboolean little_endian,
int octects_to_next_header,
const char * label) {
proto_item *ti, *param_item, *param_len_item = NULL;
proto_tree *rtps_parameter_sequence_tree, *rtps_parameter_tree, *subtree;
guint16 parameter, param_length;
guint8 buffer[MAX_PARAM_SIZE];
gint max_param_section = offset + octects_to_next_header;
buffer[0] = '\0';
ti = proto_tree_add_text(tree, tvb, offset, -1, "%s:", label);
rtps_parameter_sequence_tree = proto_item_add_subtree(ti, ett_rtps_parameter_sequence);
/* Loop through all the parameters defined until PID_SENTINEL is found */
do {
if (max_param_section-offset < 4) {
expert_add_info_format(pinfo, (param_len_item == NULL) ? ti : param_len_item,
PI_PROTOCOL, PI_WARN, "ERROR: not enough bytes to read the next parameter");
return 0;
}
/* Reads parameter and create the sub tree. At this point we don't know
* the final string that will identify the node or its length. It will
* be set later...
*/
parameter = NEXT_guint16(tvb, offset, little_endian);
param_item = proto_tree_add_text(rtps_parameter_sequence_tree, tvb, offset, -1,
"%s", val_to_str(parameter, parameter_id_vals, "Unknown (0x%04x)"));
rtps_parameter_tree = proto_item_add_subtree(param_item, ett_rtps_parameter);
proto_tree_add_uint(rtps_parameter_tree, hf_rtps_parameter_id,
tvb, offset, 2, parameter);
offset += 2;
/* parameter length */
param_length = NEXT_guint16(tvb, offset, little_endian);
param_len_item = proto_tree_add_item(rtps_parameter_tree,
hf_rtps_parameter_length,
tvb,
offset,
2,
little_endian ? ENC_LITTLE_ENDIAN : ENC_BIG_ENDIAN);
offset += 2;
/* Make sure we have enough bytes for the param value */
if ((max_param_section-offset < param_length) &&
(parameter != PID_SENTINEL)) {
expert_add_info_format(pinfo, param_len_item, PI_PROTOCOL, PI_WARN, "Not enough bytes to read the parameter value");
return 0;
}
/* Sets the end of this item (now we know it!) */
proto_item_set_len(param_item, param_length+4);
switch(parameter) {
/* 0...2...........7...............15.............23...............31
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | PID_PARTICIPANT_LEASE_DURATION| 0x0008 |
* +---------------+---------------+---------------+---------------+
* | long NtpTime.seconds |
* +---------------+---------------+---------------+---------------+
* | unsigned long NtpTime.fraction |
* +---------------+---------------+---------------+---------------+
*/
case PID_PARTICIPANT_LEASE_DURATION:
ENSURE_LENGTH(8);
rtps_util_add_ntp_time(rtps_parameter_tree, tvb, offset,
little_endian, hf_rtps_participant_lease_duration);
break;
/* 0...2...........7...............15.............23...............31
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | PID_TIME_BASED_FILTER | 0x0008 |
* +---------------+---------------+---------------+---------------+
* | long NtpTime.seconds |
* +---------------+---------------+---------------+---------------+
* | unsigned long NtpTime.fraction |
* +---------------+---------------+---------------+---------------+
*/
case PID_TIME_BASED_FILTER:
ENSURE_LENGTH(8);
rtps_util_add_ntp_time(rtps_parameter_tree, tvb, offset,
little_endian, hf_rtps_time_based_filter_minimum_separation);
break;
/* 0...2...........7...............15.............23...............31
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | PID_TOPIC_NAME | length |
* +---------------+---------------+---------------+---------------+
* | unsigned long String.length |
* +---------------+---------------+---------------+---------------+
* | str[0] | str[1] | str[2] | str[3] |
* +---------------+---------------+---------------+---------------+
* | ... |
* +---------------+---------------+---------------+---------------+
*/
case PID_TOPIC_NAME:
rtps_util_add_string(rtps_parameter_tree,
tvb,
offset,
hf_rtps_param_topic_name,
little_endian,
NULL, /* No label, use hf param */
buffer,
MAX_PARAM_SIZE);
break;
/* 0...2...........7...............15.............23...............31
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | PID_OWNERSHIP_STRENGTH | 0x0004 |
* +---------------+---------------+---------------+---------------+
* | long strength |
* +---------------+---------------+---------------+---------------+
*/
case PID_OWNERSHIP_STRENGTH:
ENSURE_LENGTH(4);
proto_tree_add_item(rtps_parameter_tree, hf_rtps_param_strength, tvb, offset, 4, little_endian ? ENC_LITTLE_ENDIAN : ENC_BIG_ENDIAN);
break;
/* 0...2...........7...............15.............23...............31
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | PID_TYPE_NAME | length |
* +---------------+---------------+---------------+---------------+
* | unsigned long String.length |
* +---------------+---------------+---------------+---------------+
* | str[0] | str[1] | str[2] | str[3] |
* +---------------+---------------+---------------+---------------+
* | ... |
* +---------------+---------------+---------------+---------------+
*/
case PID_TYPE_NAME:
rtps_util_add_string(rtps_parameter_tree,
tvb,
offset,
hf_rtps_param_type_name,
little_endian,
NULL, /* No label, use hf param */
buffer,
MAX_PARAM_SIZE);
break;
/* 0...2...........7...............15.............23...............31
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | PID_XXXXXXXXXXX | 0x0004 |
* +---------------+---------------+---------------+---------------+
* | long port |
* +---------------+---------------+---------------+---------------+
*/
case PID_METATRAFFIC_MULTICAST_PORT:
case PID_METATRAFFIC_UNICAST_PORT:
case PID_DEFAULT_UNICAST_PORT:
ENSURE_LENGTH(4);
rtps_util_add_port(rtps_parameter_tree, pinfo, tvb, offset,
little_endian, hf_rtps_param_port);
break;
/* 0...2...........7...............15.............23...............31
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | PID_EXPECTS_INLINE_QOS | 0x0004 |
* +---------------+---------------+---------------+---------------+
* | boolean | N O T U S E D |
* +---------------+---------------+---------------+---------------+
*/
case PID_EXPECTS_INLINE_QOS:
ENSURE_LENGTH(1);
proto_tree_add_item(rtps_parameter_tree, hf_rtps_expects_inline_qos, tvb, offset, 1, ENC_NA );
break;
/* 0...2...........7...............15.............23...............31
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | PID_XXXXXXXXXXX | length |
* +---------------+---------------+---------------+---------------+
* | unsigned long ip_address |
* +---------------+---------------+---------------+---------------+
*/
case PID_METATRAFFIC_MULTICAST_IPADDRESS:
case PID_DEFAULT_UNICAST_IPADDRESS:
case PID_MULTICAST_IPADDRESS:
case PID_METATRAFFIC_UNICAST_IPADDRESS:
rtps_util_add_ipv4_address_t(rtps_parameter_tree, pinfo, tvb, offset,
little_endian, hf_param_ip_address);
break;
/* 0...2...........7...............15.............23...............31
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | PID_PROTOCOL_VERSION | 0x0004 |
* +---------------+---------------+---------------+---------------+
* | uint8 major | uint8 minor | N O T U S E D |
* +---------------+---------------+---------------+---------------+
*/
case PID_PROTOCOL_VERSION: {
ENSURE_LENGTH(2);
rtps_util_add_protocol_version(rtps_parameter_tree, tvb, offset);
break;
}
/* 0...2...........7...............15.............23...............31
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | PID_VENDOR_ID | 0x0004 |
* +---------------+---------------+---------------+---------------+
* | uint8 major | uint8 minor | N O T U S E D |
* +---------------+---------------+---------------+---------------+
*/
case PID_VENDOR_ID:
ENSURE_LENGTH(2);
rtps_util_add_vendor_id(NULL, tvb, offset);
break;
/* 0...2...........7...............15.............23...............31
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | PID_RELIABILITY | 0x0004 |
* +---------------+---------------+---------------+---------------+
* | unsigned long kind |
* +---------------+---------------+---------------+---------------+
*/
case PID_RELIABILITY_OFFERED: /* Deprecated */
case PID_RELIABILITY:
ENSURE_LENGTH(4);
proto_tree_add_item(rtps_parameter_tree, hf_rtps_reliability_kind, tvb, offset, 4,
little_endian ? ENC_LITTLE_ENDIAN : ENC_BIG_ENDIAN);
/* Older version of the protocol (and for PID_RELIABILITY_OFFERED)
* this parameter was carrying also a NtpTime called
* 'maxBlockingTime'.
*/
if (octects_to_next_header == 12) {
rtps_util_add_ntp_time(rtps_parameter_tree, tvb, offset + 4,
little_endian, hf_rtps_reliability_max_blocking_time);
}
break;
/* 0...2...........7...............15.............23...............31
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | PID_LIVELINESS | 0x000c |
* +---------------+---------------+---------------+---------------+
* | unsigned long kind |
* +---------------+---------------+---------------+---------------+
* | long NtpTime.seconds |
* +---------------+---------------+---------------+---------------+
* | unsigned long NtpTime.fraction |
* +---------------+---------------+---------------+---------------+
* NDDS 3.1 sends only 'kind' on the wire.
*
*/
case PID_LIVELINESS_OFFERED: /* Deprecated */
case PID_LIVELINESS:
ENSURE_LENGTH(12);
rtps_util_add_liveliness_qos(rtps_parameter_tree, tvb, offset, little_endian);
break;
/* 0...2...........7...............15.............23...............31
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | PID_DURABILITY | 0x0004 |
* +---------------+---------------+---------------+---------------+
* | unsigned long kind |
* +---------------+---------------+---------------+---------------+
*/
case PID_DURABILITY:
ENSURE_LENGTH(4);
proto_tree_add_item(rtps_parameter_tree, hf_rtps_durability, tvb, offset, 4,
little_endian ? ENC_LITTLE_ENDIAN : ENC_BIG_ENDIAN);
break;
/* 0...2...........7...............15.............23...............31
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | PID_DURABILITY_SERVICE | 0x0004 |
* +---------------+---------------+---------------+---------------+
* | long NtpTime.seconds |
* +---------------+---------------+---------------+---------------+
* | unsigned long NtpTime.fraction |
* +---------------+---------------+---------------+---------------+
* | unsigned long kind |
* +---------------+---------------+---------------+---------------+
* | long history_depth |
* +---------------+---------------+---------------+---------------+
* | long max_samples |
* +---------------+---------------+---------------+---------------+
* | long max_instances |
* +---------------+---------------+---------------+---------------+
* | long max_samples_per_instance |
* +---------------+---------------+---------------+---------------+
*/
case PID_DURABILITY_SERVICE:
ENSURE_LENGTH(28);
rtps_util_add_durability_service_qos(rtps_parameter_tree, tvb, offset, little_endian);
break;
/* 0...2...........7...............15.............23...............31
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | PID_OWNERSHIP | 0x0004 |
* +---------------+---------------+---------------+---------------+
* | unsigned long kind |
* +---------------+---------------+---------------+---------------+
*/
case PID_OWNERSHIP_OFFERED: /* Deprecated */
case PID_OWNERSHIP:
ENSURE_LENGTH(4);
proto_tree_add_item(rtps_parameter_tree, hf_rtps_ownership, tvb, offset, 4,
little_endian ? ENC_LITTLE_ENDIAN : ENC_BIG_ENDIAN);
break;
/* 0...2...........7...............15.............23...............31
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | PID_PRESENTATION | 0x0008 |
* +---------------+---------------+---------------+---------------+
* | unsigned long kind |
* +---------------+---------------+---------------+---------------+
* | boolean | boolean | N O T U S E D |
* +---------------+---------------+---------------+---------------+
*/
case PID_PRESENTATION_OFFERED: /* Deprecated */
case PID_PRESENTATION:
ENSURE_LENGTH(6);
proto_tree_add_item(rtps_parameter_tree, hf_rtps_presentation_access_scope, tvb, offset, 4,
little_endian ? ENC_LITTLE_ENDIAN : ENC_BIG_ENDIAN);
proto_tree_add_item(rtps_parameter_tree, hf_rtps_presentation_coherent_access, tvb, offset+4, 1, ENC_NA );
proto_tree_add_item(rtps_parameter_tree, hf_rtps_presentation_ordered_access, tvb, offset+5, 1, ENC_NA );
break;
/* 0...2...........7...............15.............23...............31
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | PID_DEADLINE | 0x0008 |
* +---------------+---------------+---------------+---------------+
* | long NtpTime.seconds |
* +---------------+---------------+---------------+---------------+
* | unsigned long NtpTime.fraction |
* +---------------+---------------+---------------+---------------+
*/
case PID_DEADLINE_OFFERED: /* Deprecated */
case PID_DEADLINE:
ENSURE_LENGTH(8);
rtps_util_add_ntp_time(rtps_parameter_tree, tvb, offset,
little_endian, hf_rtps_deadline_period);
break;
/* 0...2...........7...............15.............23...............31
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | PID_DESTINATION_ORDER | 0x0004 |
* +---------------+---------------+---------------+---------------+
* | unsigned long kind |
* +---------------+---------------+---------------+---------------+
*/
case PID_DESTINATION_ORDER_OFFERED: /* Deprecated */
case PID_DESTINATION_ORDER:
ENSURE_LENGTH(4);
proto_tree_add_item(rtps_parameter_tree, hf_rtps_destination_order, tvb, offset, 4,
little_endian ? ENC_LITTLE_ENDIAN : ENC_BIG_ENDIAN);
break;
/* 0...2...........7...............15.............23...............31
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | PID_LATENCY_BUDGET | 0x0008 |
* +---------------+---------------+---------------+---------------+
* | long NtpTime.seconds |
* +---------------+---------------+---------------+---------------+
* | unsigned long NtpTime.fraction |
* +---------------+---------------+---------------+---------------+
*/
case PID_LATENCY_BUDGET_OFFERED:
case PID_LATENCY_BUDGET:
ENSURE_LENGTH(8);
rtps_util_add_ntp_time(rtps_parameter_tree, tvb, offset,
little_endian, hf_rtps_latency_budget_duration);
break;
/* 0...2...........7...............15.............23...............31
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | PID_PARTITION | length |
* +---------------+---------------+---------------+---------------+
* | unsigned long sequence_size |
* +---------------+---------------+---------------+---------------+
* | unsigned long string[0].size |
* +---------------+---------------+---------------+---------------+
* | string[0][0] | string[0][1] | string[0][2] | string[0][3] |
* +---------------+---------------+---------------+---------------+
* | ... |
* +---------------+---------------+---------------+---------------+
* The value is a sequence of strings.
*/
case PID_PARTITION_OFFERED: /* Deprecated */
case PID_PARTITION:
ENSURE_LENGTH(4);
rtps_util_add_seq_string(rtps_parameter_tree,
tvb,
offset,
little_endian,
param_length,
"name",
buffer,
MAX_PARAM_SIZE);
break;
/* 0...2...........7...............15.............23...............31
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | PID_LIFESPAN | 0x0008 |
* +---------------+---------------+---------------+---------------+
* | long NtpTime.seconds |
* +---------------+---------------+---------------+---------------+
* | unsigned long NtpTime.fraction |
* +---------------+---------------+---------------+---------------+
*/
case PID_LIFESPAN:
ENSURE_LENGTH(8);
rtps_util_add_ntp_time(rtps_parameter_tree, tvb, offset,
little_endian, hf_rtps_lifespan_duration);
break;
/* 0...2...........7...............15.............23...............31
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | PID_USER_DATA | length |
* +---------------+---------------+---------------+---------------+
* | unsigned long sequence_size |
* +---------------+---------------+---------------+---------------+
* | octect[0] | octet[1] | octect[2] | octet[3] |
* +---------------+---------------+---------------+---------------+
* | ... |
* +---------------+---------------+---------------+---------------+
*/
case PID_USER_DATA:
ENSURE_LENGTH(4);
rtps_util_add_seq_octets(rtps_parameter_tree, pinfo, tvb, offset,
little_endian, param_length, hf_rtps_param_user_data);
break;
/* 0...2...........7...............15.............23...............31
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | PID_GROUP_DATA | length |
* +---------------+---------------+---------------+---------------+
* | unsigned long sequence_size |
* +---------------+---------------+---------------+---------------+
* | octect[0] | octet[1] | octect[2] | octet[3] |
* +---------------+---------------+---------------+---------------+
* | ... |
* +---------------+---------------+---------------+---------------+
*/
case PID_GROUP_DATA:
ENSURE_LENGTH(4);
rtps_util_add_seq_octets(rtps_parameter_tree, pinfo, tvb, offset,
little_endian, param_length, hf_rtps_param_group_data);
break;
/* 0...2...........7...............15.............23...............31
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | PID_TOPIC_DATA | length |
* +---------------+---------------+---------------+---------------+
* | unsigned long sequence_size |
* +---------------+---------------+---------------+---------------+
* | octect[0] | octet[1] | octect[2] | octet[3] |
* +---------------+---------------+---------------+---------------+
* | ... |
* +---------------+---------------+---------------+---------------+
*/
case PID_TOPIC_DATA:
ENSURE_LENGTH(4);
rtps_util_add_seq_octets(rtps_parameter_tree, pinfo, tvb, offset,
little_endian, param_length, hf_rtps_param_topic_data);
break;
/* 0...2...........7...............15.............23...............31
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | PID_UNICAST_LOCATOR | 0x0018 |
* +---------------+---------------+---------------+---------------+
* | long kind |
* +---------------+---------------+---------------+---------------+
* | long port |
* +---------------+---------------+---------------+---------------+
* | ipv6addr[0] | ipv6addr[1] | ipv6addr[2] | ipv6addr[3] |
* +---------------+---------------+---------------+---------------+
* | ipv6addr[4] | ipv6addr[5] | ipv6addr[6] | ipv6addr[7] |
* +---------------+---------------+---------------+---------------+
* | ipv6addr[8] | ipv6addr[9] | ipv6addr[10] | ipv6addr[11] |
* +---------------+---------------+---------------+---------------+
* | ipv6addr[12] | ipv6addr[13] | ipv6addr[14] | ipv6addr[15] |
* +---------------+---------------+---------------+---------------+
*/
case PID_UNICAST_LOCATOR:
ENSURE_LENGTH(24);
rtps_util_add_locator_t(rtps_parameter_tree, pinfo, tvb,
offset, little_endian, "locator");
break;
/* 0...2...........7...............15.............23...............31
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | PID_MULTICAST_LOCATOR | 0x0018 |
* +---------------+---------------+---------------+---------------+
* | long kind |
* +---------------+---------------+---------------+---------------+
* | long port |
* +---------------+---------------+---------------+---------------+
* | ipv6addr[0] | ipv6addr[1] | ipv6addr[2] | ipv6addr[3] |
* +---------------+---------------+---------------+---------------+
* | ipv6addr[4] | ipv6addr[5] | ipv6addr[6] | ipv6addr[7] |
* +---------------+---------------+---------------+---------------+
* | ipv6addr[8] | ipv6addr[9] | ipv6addr[10] | ipv6addr[11] |
* +---------------+---------------+---------------+---------------+
* | ipv6addr[12] | ipv6addr[13] | ipv6addr[14] | ipv6addr[15] |
* +---------------+---------------+---------------+---------------+
*/
case PID_MULTICAST_LOCATOR:
ENSURE_LENGTH(24);
rtps_util_add_locator_t(rtps_parameter_tree, pinfo, tvb,
offset, little_endian, "locator");
break;
/* 0...2...........7...............15.............23...............31
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | PID_DEFAULT_UNICAST_LOCATOR | 0x0018 |
* +---------------+---------------+---------------+---------------+
* | long kind |
* +---------------+---------------+---------------+---------------+
* | long port |
* +---------------+---------------+---------------+---------------+
* | ipv6addr[0] | ipv6addr[1] | ipv6addr[2] | ipv6addr[3] |
* +---------------+---------------+---------------+---------------+
* | ipv6addr[4] | ipv6addr[5] | ipv6addr[6] | ipv6addr[7] |
* +---------------+---------------+---------------+---------------+
* | ipv6addr[8] | ipv6addr[9] | ipv6addr[10] | ipv6addr[11] |
* +---------------+---------------+---------------+---------------+
* | ipv6addr[12] | ipv6addr[13] | ipv6addr[14] | ipv6addr[15] |
* +---------------+---------------+---------------+---------------+
*/
case PID_DEFAULT_UNICAST_LOCATOR:
ENSURE_LENGTH(24);
rtps_util_add_locator_t(rtps_parameter_tree, pinfo, tvb,
offset, little_endian, "locator");
break;
/* 0...2...........7...............15.............23...............31
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | PID_METATRAFFIC_UNICAST_LOC...| 0x0018 |
* +---------------+---------------+---------------+---------------+
* | long kind |
* +---------------+---------------+---------------+---------------+
* | long port |
* +---------------+---------------+---------------+---------------+
* | ipv6addr[0] | ipv6addr[1] | ipv6addr[2] | ipv6addr[3] |
* +---------------+---------------+---------------+---------------+
* | ipv6addr[4] | ipv6addr[5] | ipv6addr[6] | ipv6addr[7] |
* +---------------+---------------+---------------+---------------+
* | ipv6addr[8] | ipv6addr[9] | ipv6addr[10] | ipv6addr[11] |
* +---------------+---------------+---------------+---------------+
* | ipv6addr[12] | ipv6addr[13] | ipv6addr[14] | ipv6addr[15] |
* +---------------+---------------+---------------+---------------+
*/
case PID_METATRAFFIC_UNICAST_LOCATOR:
ENSURE_LENGTH(24);
rtps_util_add_locator_t(rtps_parameter_tree, pinfo, tvb,
offset, little_endian, "locator");
break;
/* 0...2...........7...............15.............23...............31
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | PID_METATRAFFIC_MULTICAST_L...| 0x0018 |
* +---------------+---------------+---------------+---------------+
* | long kind |
* +---------------+---------------+---------------+---------------+
* | long port |
* +---------------+---------------+---------------+---------------+
* | ipv6addr[0] | ipv6addr[1] | ipv6addr[2] | ipv6addr[3] |
* +---------------+---------------+---------------+---------------+
* | ipv6addr[4] | ipv6addr[5] | ipv6addr[6] | ipv6addr[7] |
* +---------------+---------------+---------------+---------------+
* | ipv6addr[8] | ipv6addr[9] | ipv6addr[10] | ipv6addr[11] |
* +---------------+---------------+---------------+---------------+
* | ipv6addr[12] | ipv6addr[13] | ipv6addr[14] | ipv6addr[15] |
* +---------------+---------------+---------------+---------------+
*/
case PID_METATRAFFIC_MULTICAST_LOCATOR:
ENSURE_LENGTH(24);
rtps_util_add_locator_t(rtps_parameter_tree, pinfo, tvb,
offset, little_endian, "locator");
break;
/* 0...2...........7...............15.............23...............31
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | PID_PARTICIPANT_MANUAL_LIVE...| 0x0004 |
* +---------------+---------------+---------------+---------------+
* | long livelinessEpoch |
* +---------------+---------------+---------------+---------------+
*/
case PID_PARTICIPANT_BUILTIN_ENDPOINTS:
ENSURE_LENGTH(4);
proto_tree_add_item(rtps_parameter_tree, hf_rtps_participant_builtin_endpoints, tvb, offset, 4,
little_endian ? ENC_LITTLE_ENDIAN : ENC_BIG_ENDIAN);
break;
case PID_PARTICIPANT_MANUAL_LIVELINESS_COUNT:
ENSURE_LENGTH(4);
proto_tree_add_item(rtps_parameter_tree, hf_rtps_participant_manual_liveliness_count, tvb, offset, 4,
little_endian ? ENC_LITTLE_ENDIAN : ENC_BIG_ENDIAN);
break;
/* 0...2...........7...............15.............23...............31
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | PID_HISTORY | 0x0004 |
* +---------------+---------------+---------------+---------------+
* | long kind |
* +---------------+---------------+---------------+---------------+
* | long depth |
* +---------------+---------------+---------------+---------------+
*/
case PID_HISTORY:
ENSURE_LENGTH(8);
proto_tree_add_item(rtps_parameter_tree, hf_rtps_history_kind, tvb, offset, 4,
little_endian ? ENC_LITTLE_ENDIAN : ENC_BIG_ENDIAN);
proto_tree_add_item(rtps_parameter_tree, hf_rtps_history_depth, tvb, offset+4, 4,
little_endian ? ENC_LITTLE_ENDIAN : ENC_BIG_ENDIAN);
break;
/* 0...2...........7...............15.............23...............31
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | PID_RESOURCE_LIMIT | 0x0004 |
* +---------------+---------------+---------------+---------------+
* | long max_samples |
* +---------------+---------------+---------------+---------------+
* | long max_instances |
* +---------------+---------------+---------------+---------------+
* | long max_samples_per_instances |
* +---------------+---------------+---------------+---------------+
*/
case PID_RESOURCE_LIMIT:
ENSURE_LENGTH(12);
ti = proto_tree_add_text(rtps_parameter_tree, tvb, offset, 12, "Resource Limit");
subtree = proto_item_add_subtree(ti, ett_rtps_resource_limit);
proto_tree_add_item(subtree, hf_rtps_resource_limit_max_samples, tvb, offset, 4, little_endian ? ENC_LITTLE_ENDIAN : ENC_BIG_ENDIAN);
proto_tree_add_item(subtree, hf_rtps_resource_limit_max_instances, tvb, offset+4, 4, little_endian ? ENC_LITTLE_ENDIAN : ENC_BIG_ENDIAN);
proto_tree_add_item(subtree, hf_rtps_resource_limit_max_samples_per_instances, tvb, offset+8, 4, little_endian ? ENC_LITTLE_ENDIAN : ENC_BIG_ENDIAN);
break;
/* 0...2...........7...............15.............23...............31
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | PID_CONTENT_FILTER_PROPERTY | length |
* +---------------+---------------+---------------+---------------+
* | unsigned long String1.length |
* +---------------+---------------+---------------+---------------+
* | str1[0] | str1[1] | str1[2] | str1[3] |
* +---------------+---------------+---------------+---------------+
* | ... |
* +---------------+---------------+---------------+---------------+
* | unsigned long String2.length |
* +---------------+---------------+---------------+---------------+
* | str2[0] | str2[1] | str2[2] | str2[3] |
* +---------------+---------------+---------------+---------------+
* | ... |
* +---------------+---------------+---------------+---------------+
* | unsigned long String3.length |
* +---------------+---------------+---------------+---------------+
* | str3[0] | str3[1] | str3[2] | str3[3] |
* +---------------+---------------+---------------+---------------+
* | ... |
* +---------------+---------------+---------------+---------------+
* | unsigned long String4.length |
* +---------------+---------------+---------------+---------------+
* | str4[0] | str4[1] | str4[2] | str4[3] |
* +---------------+---------------+---------------+---------------+
* | ... |
* +---------------+---------------+---------------+---------------+
* | ... |
* | Filter Parameters |
* | ... |
* +---------------+---------------+---------------+---------------+
*
* String1: ContentFilterName
* String2: RelatedTopicName
* String3: FilterName
* String4: FilterExpression
* FilterParameters: sequence of Strings
*
* Note: those strings starts all to a word-aligned (4 bytes) offset
*/
case PID_CONTENT_FILTER_PROPERTY: {
guint32 temp_offset = offset;
ENSURE_LENGTH(20);
temp_offset = rtps_util_add_string(rtps_parameter_tree,
tvb,
temp_offset,
hf_rtps_param_content_filter_name,
little_endian,
NULL, /* No label, use hf param */
buffer,
MAX_PARAM_SIZE);
temp_offset = rtps_util_add_string(rtps_parameter_tree,
tvb,
temp_offset,
hf_rtps_param_related_topic_name,
little_endian,
NULL,
NULL,
0);
temp_offset = rtps_util_add_string(rtps_parameter_tree,
tvb,
temp_offset,
hf_rtps_param_filter_name,
little_endian,
NULL,
NULL,
0);
temp_offset = rtps_util_add_string(rtps_parameter_tree,
tvb,
temp_offset,
-1,
little_endian,
"filterExpression",
NULL,
0);
/*temp_offset = */rtps_util_add_seq_string(rtps_parameter_tree,
tvb,
temp_offset,
little_endian,
param_length,
"filterParameters",
NULL,
0);
break;
}
/* 0...2...........7...............15.............23...............31
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | PID_PROPERTY_LIST | length |
* +---------------+---------------+---------------+---------------+
* | unsigned long Seq.Length |
* +---------------+---------------+---------------+---------------+
* | ... |
* | Property 1 |
* | ... |
* +---------------+---------------+---------------+---------------+
* | ... |
* | Property 2 |
* | ... |
* +---------------+---------------+---------------+---------------+
* | ... |
* | Property n |
* | ... |
* +---------------+---------------+---------------+---------------+
*
* IDL:
* struct PROPERTY {
* String Name;
* String Value;
* };
*
* struct PROPERTY_LIST {
* Sequence<PROPERTY> PropertyList;
* };
*
*/
case PID_PROPERTY_LIST_OLD:
ENSURE_LENGTH(4);
{
guint32 prev_offset;
guint32 temp_offset;
guint8 tempName[MAX_PARAM_SIZE];
guint8 tempValue[MAX_PARAM_SIZE];
guint32 seq_size = NEXT_guint32(tvb, offset, little_endian);
g_snprintf(buffer, MAX_PARAM_SIZE, "%d properties", seq_size);
if (seq_size > 0) {
proto_tree_add_text(rtps_parameter_tree,
tvb,
offset,
0,
/* 123456789012345678901234567890|123456789012345678901234567890 */
" Property Name | Property Value");
proto_tree_add_text(rtps_parameter_tree,
tvb,
offset,
0,
/* 123456789012345678901234567890|123456789012345678901234567890 */
"------------------------------|------------------------------");
temp_offset = offset+4;
while(seq_size-- > 0) {
prev_offset = temp_offset;
temp_offset = rtps_util_add_string(NULL,
tvb,
temp_offset,
-1,
little_endian,
NULL,
tempName,
MAX_PARAM_SIZE);
temp_offset = rtps_util_add_string(NULL,
tvb,
temp_offset,
-1,
little_endian,
NULL,
tempValue,
MAX_PARAM_SIZE);
proto_tree_add_text(rtps_parameter_tree,
tvb,
prev_offset,
temp_offset - prev_offset,
"%-29s | %-29s",
tempName,
tempValue);
}
}
}
break;
/* 0...2...........7...............15.............23...............31
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | PID_FILTER_SIGNATURE | length |
* +---------------+---------------+---------------+---------------+
* | ... |
* +---------------+---------------+---------------+---------------+
*
* IDL:
* struct CONTENT_FILTER_SIGNATURE {
* sequence<long> filterBitmap;
* sequence<FILTER_SIGNATURE, 4> filterSignature;
* }
*
* where:
* struct FILTER_SIGNATURE {
* long filterSignature[4];
* }
*/
case PID_FILTER_SIGNATURE: {
guint32 temp_offset = offset;
guint32 prev_offset;
guint32 fs_elem;
guint32 fs[4];
ENSURE_LENGTH(8);
/* Dissect filter bitmap */
temp_offset = rtps_util_add_seq_ulong(rtps_parameter_tree, tvb, offset,
hf_rtps_filter_bitmap, little_endian, param_length, "filterBitmap");
/* Dissect sequence of FILTER_SIGNATURE */
fs_elem = NEXT_guint32(tvb, temp_offset, little_endian);
temp_offset += 4;
while (fs_elem-- > 0) {
prev_offset = temp_offset;
/* Dissect the next FILTER_SIGNATURE object */
fs[0] = NEXT_guint32(tvb, temp_offset, little_endian);
temp_offset += 4;
fs[1] = NEXT_guint32(tvb, temp_offset, little_endian);
temp_offset += 4;
fs[2] = NEXT_guint32(tvb, temp_offset, little_endian);
temp_offset += 4;
fs[3] = NEXT_guint32(tvb, temp_offset, little_endian);
temp_offset += 4;
proto_tree_add_text(rtps_parameter_tree,
tvb,
prev_offset,
temp_offset - prev_offset,
"filterSignature: %08x %08x %08x %08x",
fs[0], fs[1], fs[2], fs[3]);
}
break;
}
/* 0...2...........7...............15.............23...............31
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | PID_COHERENT_SET | length |
* +---------------+---------------+---------------+---------------+
* | |
* + SequenceNumber seqNumber +
* | |
* +---------------+---------------+---------------+---------------+
*/
case PID_COHERENT_SET:
ENSURE_LENGTH(8);
rtps_util_add_seq_number(rtps_parameter_tree,
tvb,
offset,
little_endian,
"sequenceNumber");
break;
/* 0...2...........7...............15.............23...............31
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | PID_TYPECODE | length |
* +---------------+---------------+---------------+---------------+
* | |
* + Type code description +
* | |
* +---------------+---------------+---------------+---------------+
*/
case PID_TYPECODE:
rtps_util_add_typecode(rtps_parameter_tree,
tvb,
offset,
little_endian,
0, /* indent level */
0, /* isPointer */
-1, /* bitfield */
0, /* isKey */
offset,
NULL, /* name */
-1, /* not a seq field */
NULL, /* not an array */
0); /* ndds 4.0 hack: init to false */
break;
/* 0...2...........7...............15.............23...............31
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | PID_PARTICIPANT_GUID | 0x000c |
* +---------------+---------------+---------------+---------------+
* | guid[0] | guid[1] | guid[2] | guid[3] |
* +---------------+---------------+---------------+---------------+
* | guid[4] | guid[5] | guid[6] | guid[7] |
* +---------------+---------------+---------------+---------------+
* | guid[8] | guid[9] | guid[10] | guid[11] |
* +---------------+---------------+---------------+---------------+
*/
case PID_PARTICIPANT_GUID:
ENSURE_LENGTH(12);
rtps_util_add_generic_guid(rtps_parameter_tree,
tvb,
offset,
"Participant GUID",
buffer,
MAX_PARAM_SIZE);
break;
/* 0...2...........7...............15.............23...............31
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | PID_PARTICIPANT_ENTITY_ID | 0x0004 |
* +---------------+---------------+---------------+---------------+
* | entity[0] | entity[1] | entity[2] | entity[3] |
* +---------------+---------------+---------------+---------------+
*/
case PID_PARTICIPANT_ENTITY_ID:
ENSURE_LENGTH(4);
rtps_util_add_generic_entity_id(rtps_parameter_tree,
tvb,
offset,
"Participant entity ID",
buffer,
MAX_PARAM_SIZE);
break;
/* 0...2...........7...............15.............23...............31
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | PID_GROUP_GUID | 0x000c |
* +---------------+---------------+---------------+---------------+
* | guid[0] | guid[1] | guid[2] | guid[3] |
* +---------------+---------------+---------------+---------------+
* | guid[4] | guid[5] | guid[6] | guid[7] |
* +---------------+---------------+---------------+---------------+
* | guid[8] | guid[9] | guid[10] | guid[11] |
* +---------------+---------------+---------------+---------------+
*/
case PID_GROUP_GUID:
ENSURE_LENGTH(12);
rtps_util_add_generic_guid(rtps_parameter_tree,
tvb,
offset,
"Group GUID",
buffer,
MAX_PARAM_SIZE);
break;
/* 0...2...........7...............15.............23...............31
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | PID_GROUP_ENTITY_ID | 0x0004 |
* +---------------+---------------+---------------+---------------+
* | entity[0] | entity[1] | entity[2] | entity[3] |
* +---------------+---------------+---------------+---------------+
*/
case PID_GROUP_ENTITY_ID:
ENSURE_LENGTH(4);
rtps_util_add_generic_entity_id(rtps_parameter_tree,
tvb,
offset,
"Group entity ID",
buffer,
MAX_PARAM_SIZE);
break;
/* ==================================================================
* Here are all the deprecated items.
*/
case PID_PERSISTENCE:
ENSURE_LENGTH(8);
rtps_util_add_ntp_time(rtps_parameter_tree,
tvb,
offset,
little_endian,
hf_rtps_persistence);
break;
case PID_TYPE_CHECKSUM:
ENSURE_LENGTH(4);
proto_tree_add_item(rtps_parameter_tree, hf_rtps_type_checksum, tvb, offset, 4, little_endian ? ENC_LITTLE_ENDIAN : ENC_BIG_ENDIAN);
break;
case PID_EXPECTS_ACK:
ENSURE_LENGTH(1);
proto_tree_add_item(rtps_parameter_tree, hf_rtps_expects_ack, tvb, offset, 1, ENC_NA );
break;
case PID_MANAGER_KEY: {
int i = 0;
guint32 manager_key;
ti = proto_tree_add_text(rtps_parameter_tree, tvb, offset, param_length, "Manager Keys");
subtree = proto_item_add_subtree(ti, ett_rtps_manager_key);
while (param_length >= 4) {
manager_key = NEXT_guint32(tvb, offset, little_endian);
proto_tree_add_uint_format(subtree, hf_rtps_manager_key, tvb, offset, 4,
manager_key, "Key[%d]: 0x%X", i, manager_key);
++i;
offset +=4;
param_length -= 4; /* decrement count */
}
offset += param_length;
break;
}
case PID_RECV_QUEUE_SIZE:
case PID_SEND_QUEUE_SIZE:
ENSURE_LENGTH(4);
proto_tree_add_item(rtps_parameter_tree, hf_rtps_queue_size, tvb, offset, 4, little_endian ? ENC_LITTLE_ENDIAN : ENC_BIG_ENDIAN);
break;
case PID_VARGAPPS_SEQUENCE_NUMBER_LAST:
ENSURE_LENGTH(4);
rtps_util_add_seq_number(rtps_parameter_tree,
tvb,
offset,
little_endian,
"sequenceNumberLast");
break;
case PID_SENTINEL:
/* PID_SENTINEL should ignore any value of parameter length */
break;
/* This is the default branch when we don't have enough information
* on how to decode the parameter. It can be used also for known
* parameters.
*/
/* 0...2...........7...............15.............23...............31
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | <pid_id> | 0x0000 |
* +---------------+---------------+---------------+---------------+
*/
case PID_IS_RELIABLE:
case PID_TYPE2_NAME:
case PID_TYPE2_CHECKSUM:
g_strlcpy(buffer, "[DEPRECATED] - Parameter not decoded", MAX_PARAM_SIZE);
case PID_PAD:
case PID_RELIABILITY_ENABLED:
default:
if (param_length > 0) {
proto_tree_add_text(rtps_parameter_tree,
tvb,
offset,
param_length,
"parameterData");
}
} /* End switch */
if (buffer[0]) {
proto_item_append_text(param_item, ": %s", buffer);
buffer[0] = '\0';
}
offset += param_length;
} while(parameter != PID_SENTINEL); /* for all the parameters */
return offset;
}
#undef ENSURE_LENGTH
gboolean rtps_is_ping(tvbuff_t *tvb, packet_info *pinfo, gint offset)
{
gboolean is_ping = FALSE;
if (!tvb_strneql(tvb, offset, "NDDSPING", 8))
is_ping = TRUE;
if (is_ping)
col_add_str(pinfo->cinfo, COL_INFO, "PING");
return is_ping;
}
/* *********************************************************************** */
/* * P A D * */
/* *********************************************************************** */
void dissect_PAD(tvbuff_t *tvb,
packet_info *pinfo,
gint offset,
guint8 flags,
gboolean little_endian,
int octects_to_next_header,
proto_tree *tree) {
/* 0...2...........7...............15.............23...............31
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | PAD |X|X|X|X|X|X|X|E| octetsToNextHeader |
* +---------------+---------------+---------------+---------------+
*/
proto_item* item;
rtps_util_decode_flags(tree, tvb, offset + 1, flags, PAD_FLAGS);
item = proto_tree_add_item(tree,
hf_rtps_sm_octets_to_next_header,
tvb,
offset + 2,
2,
little_endian ? ENC_LITTLE_ENDIAN : ENC_BIG_ENDIAN);
if (octects_to_next_header != 0) {
expert_add_info_format(pinfo, item, PI_PROTOCOL, PI_WARN, "Should be ZERO");
}
}
/* *********************************************************************** */
/* * D A T A * */
/* *********************************************************************** */
static void dissect_DATA(tvbuff_t *tvb,
packet_info *pinfo,
gint offset,
guint8 flags,
gboolean little_endian,
int octets_to_next_header,
proto_tree *tree) { /* May be set to some known values */
/* RTPS 1.0/1.1:
* 0...2...........7...............15.............23...............31
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | DATA |X|X|X|U|H|A|P|E| octetsToNextHeader |
* +---------------+---------------+---------------+---------------+
* | ObjectId readerObjectId |
* +---------------+---------------+---------------+---------------+
* | ObjectId writerObjectId |
* +---------------+---------------+---------------+---------------+
* | HostId hostId (iff H==1) |
* +---------------+---------------+---------------+---------------+
* | AppId appId (iff H==1) |
* +---------------+---------------+---------------+---------------+
* | ObjectId objectId |
* +---------------+---------------+---------------+---------------+
* | |
* + SequenceNumber writerSeqNumber +
* | |
* +---------------+---------------+---------------+---------------+
* | |
* ~ ParameterSequence parameters [only if P==1] ~
* | |
* +---------------+---------------+---------------+---------------+
* Note: on RTPS 1.0, flag U is not present
*
* RTPS 1.2:
* 0...2...........7...............15.............23...............31
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | DATA |X|X|U|Q|H|A|D|E| octetsToNextHeader |
* +---------------+---------------+---------------+---------------+
* | EntityId readerEntityId |
* +---------------+---------------+---------------+---------------+
* | EntityId writerEntityId |
* +---------------+---------------+---------------+---------------+
* | |
* + KeyHashPrefix keyHashPrefix [only if H==1] +
* | |
* +---------------+---------------+---------------+---------------+
* | KeyHashSuffix keyHashSuffix |
* +---------------+---------------+---------------+---------------+
* | |
* + SequenceNumber writerSeqNum +
* | |
* +---------------+---------------+---------------+---------------+
* | |
* ~ ParameterList inlineQos [only if Q==1] ~
* | |
* +---------------+---------------+---------------+---------------+
* | |
* ~ SerializedData serializedData [only if D==1] ~
* | |
* +---------------+---------------+---------------+---------------+
* Notes:
* - inlineQos is NEW
* - serializedData is equivalent to the old 'parameters'
*/
int min_len;
int is_builtin_entity = 0; /* true=entityId.entityKind = built-in */
gint old_offset = offset;
guint32 wid; /* Writer EntityID */
proto_item* octet_item;
rtps_util_decode_flags(tree, tvb, offset + 1, flags, DATA_FLAGS);
octet_item = proto_tree_add_item(tree,
hf_rtps_sm_octets_to_next_header,
tvb,
offset + 2,
2,
little_endian ? ENC_LITTLE_ENDIAN : ENC_BIG_ENDIAN);
/* Calculates the minimum length for this submessage */
min_len = 20;
if ((flags & FLAG_DATA_H) != 0) min_len += 8;
if ((flags & FLAG_DATA_Q) != 0) min_len += 4;
if ((flags & FLAG_DATA_D) != 0) min_len += 4;
if (octets_to_next_header < min_len) {
expert_add_info_format(pinfo, octet_item, PI_PROTOCOL, PI_WARN, "(Error: should be >= %u)", min_len);
return;
}
offset += 4;
/* readerEntityId */
is_builtin_entity |= rtps_util_add_entity_id(tree, tvb, offset,
hf_rtps_sm_rdentity_id, hf_rtps_sm_rdentity_id_key, hf_rtps_sm_rdentity_id_kind,
ett_rtps_rdentity, "readerEntityId", NULL);
offset += 4;
/* writerEntityId */
is_builtin_entity |= rtps_util_add_entity_id(tree, tvb, offset,
hf_rtps_sm_wrentity_id, hf_rtps_sm_wrentity_id_key, hf_rtps_sm_wrentity_id_kind,
ett_rtps_wrentity, "writerEntityId", &wid);
offset += 4;
/* Checks for predefined declarations
*
* writerEntityId value | A flag | Extra
* -------------------------------------------|--------|-------------
* ENTITYID_BUILTIN_SUBSCRIPTIONS_WRITER | 1 | r+
* ENTITYID_BUILTIN_SUBSCRIPTIONS_WRITER | 0 | r-
* ENTITYID_BUILTIN_PUBLICATIONS_WRITER | 1 | w+
* ENTITYID_BUILTIN_PUBLICATIONS_WRITER | 0 | w-
* ENTITYID_BUILTIN_SDP_PARTICIPANT_WRITER | 1 | p+
* ENTITYID_BUILTIN_SDP_PARTICIPANT_WRITER | 0 | p- (*)
* ENTITYID_BUILTIN_TOPIC_WRITER | 1 | t+ (*)
* ENTITYID_BUILTIN_TOPIC_WRITER | 0 | t- (*)
*
* Note (*): Currently NDDS does not publish those values
*/
if (wid == ENTITYID_BUILTIN_PUBLICATIONS_WRITER && (flags & FLAG_DATA_A) != 0) {
col_append_str(pinfo->cinfo, COL_INFO, SM_EXTRA_WPLUS);
} else if (wid == ENTITYID_BUILTIN_PUBLICATIONS_WRITER && (flags & FLAG_DATA_A) == 0) {
col_append_str(pinfo->cinfo, COL_INFO, SM_EXTRA_WMINUS);
} else if (wid == ENTITYID_BUILTIN_SUBSCRIPTIONS_WRITER && (flags & FLAG_DATA_A) != 0) {
col_append_str(pinfo->cinfo, COL_INFO, SM_EXTRA_RPLUS);
} else if (wid == ENTITYID_BUILTIN_SUBSCRIPTIONS_WRITER && (flags & FLAG_DATA_A) == 0) {
col_append_str(pinfo->cinfo, COL_INFO, SM_EXTRA_RMINUS);
} else if (wid == ENTITYID_BUILTIN_SDP_PARTICIPANT_WRITER && (flags & FLAG_DATA_A) != 0) {
col_append_str(pinfo->cinfo, COL_INFO, SM_EXTRA_PPLUS);
} else if (wid == ENTITYID_BUILTIN_SDP_PARTICIPANT_WRITER && (flags & FLAG_DATA_A) == 0) {
col_append_str(pinfo->cinfo, COL_INFO, SM_EXTRA_PMINUS);
} else if (wid == ENTITYID_BUILTIN_TOPIC_WRITER && (flags & FLAG_DATA_A) != 0) {
col_append_str(pinfo->cinfo, COL_INFO, SM_EXTRA_TPLUS);
} else if (wid == ENTITYID_BUILTIN_TOPIC_WRITER && (flags & FLAG_DATA_A) == 0) {
col_append_str(pinfo->cinfo, COL_INFO, SM_EXTRA_TMINUS);
}
/* If flag H is defined, read the HostId and AppId fields */
if ((flags & FLAG_DATA_H) != 0) {
rtps_util_add_guid_prefix(tree, tvb, offset,
hf_rtps_sm_guid_prefix, hf_rtps_sm_host_id, hf_rtps_sm_app_id,
hf_rtps_sm_instance_id, hf_rtps_sm_app_kind,
"keyHashPrefix");
offset += 8;
} else {
/* Flag H not set, use hostId, appId from the packet header */
}
/* Complete the GUID by reading the Object ID */
rtps_util_add_entity_id(tree,
tvb,
offset,
hf_rtps_sm_entity_id,
hf_rtps_sm_entity_id_key,
hf_rtps_sm_entity_id_kind,
ett_rtps_entity,
"keyHashSuffix",
NULL);
offset += 4;
/* Sequence number */
rtps_util_add_seq_number(tree,
tvb,
offset,
little_endian,
"writerSeqNumber");
offset += 8;
/* InlineQos */
if ((flags & FLAG_DATA_Q) != 0) {
offset = dissect_parameter_sequence(tree, pinfo, tvb, offset,
little_endian, octets_to_next_header, "inlineQos");
}
/* SerializedData */
if ((flags & FLAG_DATA_D) != 0) {
if (is_builtin_entity) {
/*offset =*/ dissect_parameter_sequence(tree, pinfo, tvb, offset,
little_endian, octets_to_next_header, "serializedData");
} else {
proto_tree_add_item(tree,
hf_rtps_issue_data,
tvb,
offset,
octets_to_next_header - (offset - old_offset) + 4,
little_endian ? ENC_LITTLE_ENDIAN : ENC_BIG_ENDIAN);
}
}
}
/* *********************************************************************** */
/* * N O K E Y _ D A T A * */
/* *********************************************************************** */
static void dissect_NOKEY_DATA(tvbuff_t *tvb,
packet_info *pinfo,
gint offset,
guint8 flags,
gboolean little_endian,
int octets_to_next_header,
proto_tree *tree) {
/* RTPS 1.0/1.1:
* 0...2...........7...............15.............23...............31
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | ISSUE |X|X|X|X|X|X|P|E| octetsToNextHeader |
* +---------------+---------------+---------------+---------------+
* | ObjectId readerObjectId |
* +---------------+---------------+---------------+---------------+
* | ObjectId writerObjectId |
* +---------------+---------------+---------------+---------------+
* | |
* + SequenceNumber writerSeqNumber +
* | |
* +---------------+---------------+---------------+---------------+
* | |
* ~ ParameterSequence parameters [only if P==1] ~
* | |
* +---------------+---------------+---------------+---------------+
* | |
* ~ UserData issueData ~
* | |
* +---------------+---------------+---------------+---------------+
*
* RTPS 1.2:
* 0...2...........7...............15.............23...............31
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | NOKEY_DATA |X|X|X|X|X|D|Q|E| octetsToNextHeader |
* +---------------+---------------+---------------+---------------+
* | EntityId readerEntityId |
* +---------------+---------------+---------------+---------------+
* | EntityId writerEntityId |
* +---------------+---------------+---------------+---------------+
* | |
* + SequenceNumber writerSeqNum +
* | |
* +---------------+---------------+---------------+---------------+
* | |
* ~ ParameterList inlineQos [only if Q==1] ~
* | |
* +---------------+---------------+---------------+---------------+
* | |
* ~ SerializedData serializedData [only if D==0] ~
* | |
* +---------------+---------------+---------------+---------------+
* Notes:
* - inlineQos is equivalent to the old 'parameters'
* - serializedData is equivalent to the old 'issueData'
*/
int min_len;
gint old_offset = offset;
proto_item* octet_item;
rtps_util_decode_flags(tree, tvb, offset + 1, flags, NOKEY_DATA_FLAGS);
octet_item = proto_tree_add_item(tree,
hf_rtps_sm_octets_to_next_header,
tvb,
offset + 2,
2,
little_endian ? ENC_LITTLE_ENDIAN : ENC_BIG_ENDIAN);
/* Calculates the minimum length for this submessage */
min_len = 16;
if ((flags & FLAG_NOKEY_DATA_Q) != 0) min_len += 4;
if (octets_to_next_header < min_len) {
expert_add_info_format(pinfo, octet_item, PI_PROTOCOL, PI_WARN, "(Error: should be >= %u)", min_len);
return;
}
offset += 4;
/* readerEntityId */
rtps_util_add_entity_id(tree,
tvb,
offset,
hf_rtps_sm_rdentity_id,
hf_rtps_sm_rdentity_id_key,
hf_rtps_sm_rdentity_id_kind,
ett_rtps_rdentity,
"readerEntityId",
NULL);
offset += 4;
/* writerEntityId */
rtps_util_add_entity_id(tree,
tvb,
offset,
hf_rtps_sm_wrentity_id,
hf_rtps_sm_wrentity_id_key,
hf_rtps_sm_wrentity_id_kind,
ett_rtps_wrentity,
"writerEntityId",
NULL);
offset += 4;
/* Sequence number */
rtps_util_add_seq_number(tree,
tvb,
offset,
little_endian,
"writerSeqNumber");
offset += 8;
/* Parameters */
if ((flags & FLAG_NOKEY_DATA_Q) != 0) {
offset = dissect_parameter_sequence(tree, pinfo, tvb, offset,
little_endian, octets_to_next_header, "inlineQos");
}
/* Issue Data */
if ((flags & FLAG_NOKEY_DATA_D) == 0) {
proto_tree_add_item(tree,
hf_rtps_issue_data,
tvb,
offset,
octets_to_next_header - (offset - old_offset) + 4,
little_endian ? ENC_LITTLE_ENDIAN : ENC_BIG_ENDIAN);
}
}
/* *********************************************************************** */
/* * A C K N A C K * */
/* *********************************************************************** */
static void dissect_ACKNACK(tvbuff_t *tvb,
packet_info *pinfo,
gint offset,
guint8 flags,
gboolean little_endian,
int octets_to_next_header,
proto_tree *tree,
proto_item *item) {
/* RTPS 1.0/1.1:
* 0...2...........7...............15.............23...............31
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | ACK |X|X|X|X|X|X|F|E| octetsToNextHeader |
* +---------------+---------------+---------------+---------------+
* | ObjectId readerObjectId |
* +---------------+---------------+---------------+---------------+
* | ObjectId writerObjectId |
* +---------------+---------------+---------------+---------------+
* | |
* + Bitmap bitmap +
* | |
* +---------------+---------------+---------------+---------------+
* | Counter count |
* +---------------+---------------+---------------+---------------+
*
* RTPS 1.2:
* 0...2...........7...............15.............23...............31
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | ACKNACK |X|X|X|X|X|X|F|E| octetsToNextHeader |
* +---------------+---------------+---------------+---------------+
* | EntityId readerEntityId |
* +---------------+---------------+---------------+---------------+
* | EntityId writerEntityId |
* +---------------+---------------+---------------+---------------+
* | |
* + SequenceNumberSet readerSNState +
* | |
* +---------------+---------------+---------------+---------------+
* | Counter count |
* +---------------+---------------+---------------+---------------+
*/
gint original_offset; /* Offset to the readerEntityId */
proto_item* octet_item;
rtps_util_decode_flags(tree, tvb, offset + 1, flags, ACKNACK_FLAGS);
octet_item = proto_tree_add_item(tree,
hf_rtps_sm_octets_to_next_header,
tvb,
offset + 2,
2,
little_endian ? ENC_LITTLE_ENDIAN : ENC_BIG_ENDIAN);
if (octets_to_next_header < 20) {
expert_add_info_format(pinfo, octet_item, PI_PROTOCOL, PI_WARN, "(Error: should be >= 20)");
return;
}
offset += 4;
original_offset = offset;
/* readerEntityId */
rtps_util_add_entity_id(tree,
tvb,
offset,
hf_rtps_sm_rdentity_id,
hf_rtps_sm_rdentity_id_key,
hf_rtps_sm_rdentity_id_kind,
ett_rtps_rdentity,
"readerEntityId",
NULL);
offset += 4;
/* writerEntityId */
rtps_util_add_entity_id(tree,
tvb,
offset,
hf_rtps_sm_wrentity_id,
hf_rtps_sm_wrentity_id_key,
hf_rtps_sm_wrentity_id_kind,
ett_rtps_wrentity,
"writerEntityId",
NULL);
offset += 4;
/* Bitmap */
offset = rtps_util_add_bitmap(tree,
tvb,
offset,
little_endian,
"readerSNState");
/* RTPS 1.0 didn't have count: make sure we don't decode it wrong
* in this case
*/
if (offset + 4 == original_offset + octets_to_next_header) {
/* Count is present */
proto_tree_add_item(tree, hf_rtps_acknack_counter, tvb, offset, 4, little_endian ? ENC_LITTLE_ENDIAN : ENC_BIG_ENDIAN);
} else if (offset < original_offset + octets_to_next_header) {
/* In this case there must be something wrong in the bitmap: there
* are some extra bytes that we don't know how to decode
*/
expert_add_info_format(pinfo, item, PI_MALFORMED, PI_ERROR,
"Don't know how to decode those extra bytes: %d", octets_to_next_header - offset);
} else if (offset > original_offset + octets_to_next_header) {
/* Decoding the bitmap went over the end of this submessage.
* Enter an item in the protocol tree that spans over the entire
* submessage.
*/
expert_add_info_format(pinfo, item, PI_MALFORMED, PI_ERROR,
"Not enough bytes to decode");
}
}
/* *********************************************************************** */
/* * H E A R T B E A T * */
/* *********************************************************************** */
static void dissect_HEARTBEAT(tvbuff_t *tvb,
packet_info *pinfo,
gint offset,
guint8 flags,
gboolean little_endian,
int octets_to_next_header,
proto_tree *tree) {
/* RTPS 1.0/1.1:
* 0...2...........7...............15.............23...............31
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | HEARTBEAT |X|X|X|X|X|L|F|E| octetsToNextHeader |
* +---------------+---------------+---------------+---------------+
* | ObjectId readerObjectId |
* +---------------+---------------+---------------+---------------+
* | ObjectId writerObjectId |
* +---------------+---------------+---------------+---------------+
* | |
* + SequenceNumber firstAvailableSeqNumber +
* | |
* +---------------+---------------+---------------+---------------+
* | |
* + SequenceNumber lastSeqNumber +
* | |
* +---------------+---------------+---------------+---------------+
* | long counter |
* +---------------+---------------+---------------+---------------+
*
* Notes:
* - on RTPS 1.0, counter is not present
* - on RTPS 1.0, L flag is not present
*
* RTPS 1.2:
* 0...2...........7...............15.............23...............31
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | HEARTBEAT |X|X|X|X|X|X|F|E| octetsToNextHeader |
* +---------------+---------------+---------------+---------------+
* | EntityId readerEntityId |
* +---------------+---------------+---------------+---------------+
* | EntityId writerEntityId |
* +---------------+---------------+---------------+---------------+
* | |
* + SequenceNumber firstAvailableSeqNumber +
* | |
* +---------------+---------------+---------------+---------------+
* | |
* + SequenceNumber lastSeqNumber +
* | |
* +---------------+---------------+---------------+---------------+
* | Counter count |
* +---------------+---------------+---------------+---------------+
*/
guint32 counter;
proto_item* octet_item;
rtps_util_decode_flags(tree, tvb, offset + 1, flags, HEARTBEAT_FLAGS);
octet_item = proto_tree_add_item(tree,
hf_rtps_sm_octets_to_next_header,
tvb,
offset + 2,
2,
little_endian ? ENC_LITTLE_ENDIAN : ENC_BIG_ENDIAN);
if (octets_to_next_header < 24) {
expert_add_info_format(pinfo, octet_item, PI_PROTOCOL, PI_WARN, "(Error: should be >= 24)");
return;
}
offset += 4;
/* readerEntityId */
rtps_util_add_entity_id(tree,
tvb,
offset,
hf_rtps_sm_rdentity_id,
hf_rtps_sm_rdentity_id_key,
hf_rtps_sm_rdentity_id_kind,
ett_rtps_rdentity,
"readerEntityId",
NULL);
offset += 4;
/* writerEntityId */
rtps_util_add_entity_id(tree,
tvb,
offset,
hf_rtps_sm_wrentity_id,
hf_rtps_sm_wrentity_id_key,
hf_rtps_sm_wrentity_id_kind,
ett_rtps_wrentity,
"writerEntityId",
NULL);
offset += 4;
/* First available Sequence Number */
rtps_util_add_seq_number(tree,
tvb,
offset,
little_endian,
"firstAvailableSeqNumber");
offset += 8;
/* Last Sequence Number */
rtps_util_add_seq_number(tree,
tvb,
offset,
little_endian,
"lastSeqNumber");
offset += 8;
/* Counter: it was not present in RTPS 1.0 */
if (octets_to_next_header == 0x28) {
counter = NEXT_guint32(tvb, offset, little_endian);
proto_tree_add_text(tree,
tvb,
offset,
4,
"count: %u",
counter);
}
}
/* *********************************************************************** */
/* * G A P * */
/* *********************************************************************** */
static void dissect_GAP(tvbuff_t *tvb,
packet_info *pinfo,
gint offset,
guint8 flags,
gboolean little_endian,
int octets_to_next_header,
proto_tree *tree) {
/* RTPS 1.0/1.1:
* 0...2...........7...............15.............23...............31
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | GAP |X|X|X|X|X|X|X|E| octetsToNextHeader |
* +---------------+---------------+---------------+---------------+
* | ObjectId readerObjectId |
* +---------------+---------------+---------------+---------------+
* | ObjectId writerObjectId |
* +---------------+---------------+---------------+---------------+
* | |
* + SequenceNumber firstSeqNumber +
* | |
* +---------------+---------------+---------------+---------------+
* | |
* + Bitmap bitmap +
* | |
* +---------------+---------------+---------------+---------------+
*
* 0...2...........7...............15.............23...............31
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | GAP |X|X|X|X|X|X|F|E| octetsToNextHeader |
* +---------------+---------------+---------------+---------------+
* | EntityId readerEntityId |
* +---------------+---------------+---------------+---------------+
* | EntityId writerEntityId |
* +---------------+---------------+---------------+---------------+
* | |
* + SequenceNumber gapStart +
* | |
* +---------------+---------------+---------------+---------------+
* | |
* ~ SequenceNumberSet gapList ~
* | |
* +---------------+---------------+---------------+---------------+
*/
proto_item* octet_item;
rtps_util_decode_flags(tree, tvb, offset + 1, flags, GAP_FLAGS);
octet_item = proto_tree_add_item(tree,
hf_rtps_sm_octets_to_next_header,
tvb,
offset + 2,
2,
little_endian ? ENC_LITTLE_ENDIAN : ENC_BIG_ENDIAN);
if (octets_to_next_header < 24) {
expert_add_info_format(pinfo, octet_item, PI_PROTOCOL, PI_WARN, "(Error: should be >= 24)");
return;
}
offset += 4;
/* readerEntityId */
rtps_util_add_entity_id(tree, tvb, offset,
hf_rtps_sm_rdentity_id, hf_rtps_sm_rdentity_id_key, hf_rtps_sm_rdentity_id_kind,
ett_rtps_rdentity, "readerEntityId", NULL);
offset += 4;
/* writerEntityId */
rtps_util_add_entity_id(tree, tvb, offset,
hf_rtps_sm_wrentity_id, hf_rtps_sm_wrentity_id_key, hf_rtps_sm_wrentity_id_kind,
ett_rtps_wrentity, "writerEntityId", NULL);
offset += 4;
/* First Sequence Number */
rtps_util_add_seq_number(tree,
tvb,
offset,
little_endian,
"gapStart");
offset += 8;
/* Bitmap */
rtps_util_add_bitmap(tree,
tvb,
offset,
little_endian,
"gapList");
}
/* *********************************************************************** */
/* * I N F O _ T S * */
/* *********************************************************************** */
void dissect_INFO_TS(tvbuff_t *tvb,
packet_info *pinfo,
gint offset,
guint8 flags,
gboolean little_endian,
int octets_to_next_header,
proto_tree *tree) {
/* RTPS 1.0/1.1:
* 0...2...........7...............15.............23...............31
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | INFO_TS |X|X|X|X|X|X|I|E| octetsToNextHeader |
* +---------------+---------------+---------------+---------------+
* | |
* + NtpTime ntpTimestamp [only if I==0] +
* | |
* +---------------+---------------+---------------+---------------+
*
* RTPS 1.2:
* 0...2...........7...............15.............23...............31
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | INFO_TS |X|X|X|X|X|X|T|E| octetsToNextHeader |
* +---------------+---------------+---------------+---------------+
* | |
* + Timestamp timestamp [only if T==1] +
* | |
* +---------------+---------------+---------------+---------------+
*/
int min_len;
proto_item* octet_item;
rtps_util_decode_flags(tree, tvb, offset + 1, flags, INFO_TS_FLAGS);
octet_item = proto_tree_add_item(tree,
hf_rtps_sm_octets_to_next_header,
tvb,
offset + 2,
2,
little_endian ? ENC_LITTLE_ENDIAN : ENC_BIG_ENDIAN);
min_len = 0;
if ((flags & FLAG_INFO_TS_T) == 0) min_len += 8;
if (octets_to_next_header != min_len) {
expert_add_info_format(pinfo, octet_item, PI_PROTOCOL, PI_WARN, "(Error: should be == %u)", min_len);
return;
}
offset += 4;
if ((flags & FLAG_INFO_TS_T) == 0) {
rtps_util_add_ntp_time(tree,
tvb,
offset,
little_endian,
hf_rtps_info_ts_timestamp);
}
}
/* *********************************************************************** */
/* * I N F O _ S R C * */
/* *********************************************************************** */
void dissect_INFO_SRC(tvbuff_t *tvb,
packet_info *pinfo,
gint offset,
guint8 flags,
gboolean little_endian,
int octets_to_next_header,
proto_tree *tree) {
/* RTPS 1.0/1.1:
* 0...2...........7...............15.............23...............31
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | INFO_SRC |X|X|X|X|X|X|X|E| octetsToNextHeader |
* +---------------+---------------+---------------+---------------+
* | IPAddress appIpAddress |
* +---------------+---------------+---------------+---------------+
* | ProtocolVersion version | VendorId vendor |
* +---------------+---------------+---------------+---------------+
* | HostId hostId |
* +---------------+---------------+---------------+---------------+
* | AppId appId |
* +---------------+---------------+---------------+---------------+
*
* RTPS 1.2:
* 0...2...........7...............15.............23...............31
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | INFO_SRC |X|X|X|X|X|X|X|E| octetsToNextHeader |
* +---------------+---------------+---------------+---------------+
* | long unused |
* +---------------+---------------+---------------+---------------+
* | ProtocolVersion version | VendorId vendor |
* +---------------+---------------+---------------+---------------+
* | |
* + GuidPrefix guidPrefix +
* | |
* +---------------+---------------+---------------+---------------+
*/
proto_item* octet_item;
guint32 ip;
guint16 version;
rtps_util_decode_flags(tree, tvb, offset + 1, flags, INFO_SRC_FLAGS);
octet_item = proto_tree_add_item(tree,
hf_rtps_sm_octets_to_next_header,
tvb,
offset + 2,
2,
little_endian ? ENC_LITTLE_ENDIAN : ENC_BIG_ENDIAN);
if (octets_to_next_header != 16) {
expert_add_info_format(pinfo, octet_item, PI_PROTOCOL, PI_WARN, "(Error: should be == 16)");
return;
}
offset += 4;
ip = NEXT_guint32(tvb, offset, little_endian);
/* Use version field to determine what to display */
version = tvb_get_ntohs(tvb, offset+4);
if (version < 0x102) {
proto_tree_add_ipv4(tree, hf_rtps_info_src_ip, tvb, offset, 4, ip);
} else {
proto_tree_add_uint(tree, hf_rtps_info_src_unused, tvb, offset, 4, ip);
}
offset += 4;
rtps_util_add_protocol_version(tree, tvb, offset);
offset += 2;
/* Vendor ID */
rtps_util_add_vendor_id(NULL, tvb, offset);
offset += 2;
rtps_util_add_guid_prefix(tree, tvb, offset,
hf_rtps_sm_guid_prefix, hf_rtps_sm_host_id, hf_rtps_sm_app_id,
hf_rtps_sm_instance_id, hf_rtps_sm_app_kind,
NULL); /* Use default 'guidPrefix' */
}
/* *********************************************************************** */
/* * I N F O _ R E P L Y _ I P 4 * */
/* *********************************************************************** */
static void dissect_INFO_REPLY_IP4(tvbuff_t *tvb,
packet_info *pinfo,
gint offset,
guint8 flags,
gboolean little_endian,
int octets_to_next_header,
proto_tree *tree) {
/* RTPS 1.0/1.1:
* 0...2...........7...............15.............23...............31
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | INFO_REPLY |X|X|X|X|X|X|M|E| octetsToNextHeader |
* +---------------+---------------+---------------+---------------+
* | IPAddress unicastReplyIpAddress |
* +---------------+---------------+---------------+---------------+
* | Port unicastReplyPort |
* +---------------+---------------+---------------+---------------+
* | IPAddress multicastReplyIpAddress [ only if M==1 ] |
* +---------------+---------------+---------------+---------------+
* | Port multicastReplyPort [ only if M==1 ] |
* +---------------+---------------+---------------+---------------+
*
* RTPS 1.2:
* 0...2...........7...............15.............23...............31
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* |INFO_REPLY_IP4 |X|X|X|X|X|X|M|E| octetsToNextHeader |
* +---------------+---------------+---------------+---------------+
* | |
* + LocatorUDPv4 unicastReplyLocator +
* | |
* +---------------+---------------+---------------+---------------+
* | |
* + LocatorUDPv4 multicastReplyLocator [only if M==1] +
* | |
* +---------------+---------------+---------------+---------------+
*/
int min_len;
proto_item* octet_item;
rtps_util_decode_flags(tree, tvb, offset + 1, flags, INFO_REPLY_IP4_FLAGS);
octet_item = proto_tree_add_item(tree,
hf_rtps_sm_octets_to_next_header,
tvb,
offset + 2,
2,
little_endian ? ENC_LITTLE_ENDIAN : ENC_BIG_ENDIAN);
min_len = 8;
if ((flags & FLAG_INFO_REPLY_IP4_M) != 0) min_len += 8;
if (octets_to_next_header != min_len) {
expert_add_info_format(pinfo, octet_item, PI_PROTOCOL, PI_WARN, "(Error: should be == %u)", min_len);
return;
}
offset += 4;
/* unicastReplyLocator */
rtps_util_add_locator_udp_v4(tree, pinfo, tvb, offset,
"unicastReplyLocator", little_endian);
offset += 8;
/* multicastReplyLocator */
if ((flags & FLAG_INFO_REPLY_IP4_M) != 0) {
rtps_util_add_locator_udp_v4(tree, pinfo, tvb, offset,
"multicastReplyLocator", little_endian);
/*offset += 8;*/
}
}
/* *********************************************************************** */
/* * I N F O _ D S T * */
/* *********************************************************************** */
static void dissect_INFO_DST(tvbuff_t *tvb,
packet_info *pinfo,
gint offset,
guint8 flags,
gboolean little_endian,
int octets_to_next_header,
proto_tree *tree) {
/* RTPS 1.0/1.1:
* 0...2...........7...............15.............23...............31
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | INFO_DST |X|X|X|X|X|X|X|E| octetsToNextHeader |
* +---------------+---------------+---------------+---------------+
* | HostId hostId |
* +---------------+---------------+---------------+---------------+
* | AppId appId |
* +---------------+---------------+---------------+---------------+
*
* RTPS 1.2:
* 0...2...........7...............15.............23...............31
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | INFO_DST |X|X|X|X|X|X|X|E| octetsToNextHeader |
* +---------------+---------------+---------------+---------------+
* | |
* + GuidPrefix guidPrefix +
* | |
* +---------------+---------------+---------------+---------------+
*/
proto_item* octet_item;
rtps_util_decode_flags(tree, tvb, offset + 1, flags, INFO_DST_FLAGS);
octet_item = proto_tree_add_item(tree,
hf_rtps_sm_octets_to_next_header,
tvb,
offset + 2,
2,
little_endian ? ENC_LITTLE_ENDIAN : ENC_BIG_ENDIAN);
if (octets_to_next_header != 8) {
expert_add_info_format(pinfo, octet_item, PI_PROTOCOL, PI_WARN, "(Error: should be == 8)");
return;
}
offset += 4;
rtps_util_add_guid_prefix(tree, tvb, offset,
hf_rtps_sm_guid_prefix, hf_rtps_sm_host_id, hf_rtps_sm_app_id,
hf_rtps_sm_instance_id, hf_rtps_sm_app_kind,
NULL);
}
/* *********************************************************************** */
/* * I N F O _ R E P L Y * */
/* *********************************************************************** */
static void dissect_INFO_REPLY(tvbuff_t *tvb,
packet_info *pinfo,
gint offset,
guint8 flags,
gboolean little_endian,
int octets_to_next_header,
proto_tree *tree) {
/* RTPS 1.0/1.1:
* INFO_REPLY is *NOT* the same thing as the old INFO_REPLY.
*
* RTPS 1.2:
* 0...2...........7...............15.............23...............31
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | INFO_REPLY |X|X|X|X|X|X|M|E| octetsToNextHeader |
* +---------------+---------------+---------------+---------------+
* | |
* ~ LocatorList unicastReplyLocatorList ~
* | |
* +---------------+---------------+---------------+---------------+
* | |
* ~ LocatorList multicastReplyLocatorList [only if M==1] ~
* | |
* +---------------+---------------+---------------+---------------+
*/
int min_len;
proto_item* octet_item;
rtps_util_decode_flags(tree, tvb, offset + 1, flags, INFO_REPLY_FLAGS);
octet_item = proto_tree_add_item(tree,
hf_rtps_sm_octets_to_next_header,
tvb,
offset + 2,
2,
little_endian ? ENC_LITTLE_ENDIAN : ENC_BIG_ENDIAN);
min_len = 8;
if ((flags & FLAG_INFO_REPLY_M) != 0) min_len += 8;
if (octets_to_next_header != min_len) {
expert_add_info_format(pinfo, octet_item, PI_PROTOCOL, PI_WARN, "(Error: should be == %u)", min_len);
return;
}
offset += 4;
/* unicastReplyLocatorList */
rtps_util_add_locator_list(tree, pinfo, tvb, offset, "unicastReplyLocatorList", little_endian);
offset += 8;
/* multicastReplyLocatorList */
if ((flags & FLAG_INFO_REPLY_M) != 0) {
rtps_util_add_locator_list(tree, pinfo, tvb, offset, "multicastReplyLocatorList", little_endian);
/*offset += 8;*/
}
}
#define RTPS_MAGIC_NUMBER 0x52545053 /* RTPS */
/***************************************************************************/
/* The main packet dissector function
*/
static gboolean dissect_rtps(tvbuff_t *tvb,
packet_info *pinfo,
proto_tree *tree,
void *data _U_)
{
proto_item *ti;
proto_tree *rtps_tree, *rtps_submessage_tree;
gint offset = 0;
guint8 submessageId, flags;
gboolean little_endian, is_ping;
gint next_submsg, octects_to_next_header;
const gboolean is_tcp = (pinfo->ptype == PT_TCP);
if (is_tcp) {
/* In RTPS over TCP the first 4 bytes are the packet length
* as 32-bit unsigned int coded as BIG ENDIAN
guint32 tcp_len = tvb_get_ntohl(tvb, offset);
*/
offset = 4;
}
/* Check 'RTPS' signature:
* A header is invalid if it has less than 16 octets
*/
if (!tvb_bytes_exist(tvb, offset, 16)) return FALSE;
if (tvb_get_ntohl(tvb, offset) != RTPS_MAGIC_NUMBER) return FALSE;
/* Distinguish between RTPS 1.x and 2.x here */
if (tvb_get_guint8(tvb,offset+4) != 1) return FALSE;
col_set_str(pinfo->cinfo, COL_PROTOCOL, "RTPS");
col_clear(pinfo->cinfo, COL_INFO);
/* create display subtree for the protocol */
ti = proto_tree_add_item(tree, proto_rtps, tvb, 0, -1, ENC_NA);
rtps_tree = proto_item_add_subtree(ti, ett_rtps);
/* Protocol Version */
rtps_util_add_protocol_version(rtps_tree, tvb, offset+4);
/* Vendor Id */
rtps_util_add_vendor_id(rtps_tree, tvb, offset+6);
is_ping = rtps_is_ping(tvb, pinfo, offset+8);
if (!is_ping)
rtps_util_add_guid_prefix(rtps_tree, tvb, offset+8,
hf_rtps_guid_prefix, hf_rtps_host_id, hf_rtps_app_id,
hf_rtps_app_id_instance_id, hf_rtps_app_id_app_kind, NULL);
/* Extract the domain id and participant index */
{
int domain_id, participant_idx, nature;
proto_tree *mapping_tree;
domain_id = ((pinfo->destport - PORT_BASE)/10) % 100;
participant_idx = (pinfo->destport - PORT_BASE) / 1000;
nature = (pinfo->destport % 10);
ti = proto_tree_add_text(rtps_tree, tvb, 0, 0,
"Default port mapping: domainId=%d, "
"participantIdx=%d, nature=%s",
domain_id,
participant_idx,
val_to_str(nature, nature_type_vals, "%02x"));
mapping_tree = proto_item_add_subtree(ti, ett_rtps_default_mapping);
ti = proto_tree_add_uint(mapping_tree, hf_rtps_domain_id, tvb, 0, 0, domain_id);
PROTO_ITEM_SET_GENERATED(ti);
ti = proto_tree_add_uint(mapping_tree, hf_rtps_participant_idx, tvb, 0, 0, participant_idx);
PROTO_ITEM_SET_GENERATED(ti);
ti = proto_tree_add_uint(mapping_tree, hf_rtps_nature_type, tvb, 0, 0, nature);
PROTO_ITEM_SET_GENERATED(ti);
}
/* offset behind RTPS's Header (need to be set in case tree=NULL)*/
offset=16;
while (tvb_reported_length_remaining(tvb, offset) > 0) {
submessageId = tvb_get_guint8(tvb, offset);
col_append_sep_str(pinfo->cinfo, COL_INFO, ", ",
val_to_str(submessageId, submessage_id_vals, "Unknown[%02x]"));
/* Creates the subtree 'Submessage: XXXX' */
if (submessageId & 0x80) {
ti = proto_tree_add_uint_format_value(rtps_tree,
hf_rtps_sm_id,
tvb,
offset,
1,
submessageId,
"Vendor-specific (0x%02x)",
submessageId);
} else {
ti = proto_tree_add_uint(rtps_tree, hf_rtps_sm_id,
tvb, offset, 1, submessageId);
}
rtps_submessage_tree = proto_item_add_subtree(ti, ett_rtps_submessage);
/* Gets the flags */
flags = tvb_get_guint8(tvb, offset + 1);
/* Gets the E (Little endian) flag */
little_endian = ((flags & FLAG_E) != 0);
/* Octect-to-next-header */
octects_to_next_header = NEXT_guint16(tvb, offset + 2, little_endian);
next_submsg = offset + octects_to_next_header + 4;
/* Set length of this item */
proto_item_set_len(ti, octects_to_next_header + 4);
/* Now decode each single submessage */
/* Note: if tree==NULL, we don't care about the details, so each
* sub-message dissector is not invoked. We still need to go
* through this switch to count the number of each submessage IDs
* The offset passed to the dissectors points to the start of the
* submessage (at the ID byte).
*/
switch (submessageId)
{
case PAD:
dissect_PAD(tvb, pinfo, offset, flags, little_endian, octects_to_next_header, rtps_submessage_tree);
break;
case DATA:
dissect_DATA(tvb, pinfo, offset, flags, little_endian, octects_to_next_header, rtps_submessage_tree);
break;
case NOKEY_DATA:
dissect_NOKEY_DATA(tvb, pinfo, offset, flags, little_endian, octects_to_next_header, rtps_submessage_tree);
break;
case ACKNACK:
dissect_ACKNACK(tvb, pinfo, offset, flags, little_endian, octects_to_next_header, rtps_submessage_tree, ti);
break;
case HEARTBEAT:
dissect_HEARTBEAT(tvb, pinfo, offset, flags, little_endian, octects_to_next_header, rtps_submessage_tree);
break;
case GAP:
dissect_GAP(tvb, pinfo, offset, flags, little_endian, octects_to_next_header, rtps_submessage_tree);
break;
case INFO_TS:
dissect_INFO_TS(tvb, pinfo, offset, flags, little_endian, octects_to_next_header, rtps_submessage_tree);
break;
case INFO_SRC:
dissect_INFO_SRC(tvb, pinfo, offset, flags, little_endian, octects_to_next_header, rtps_submessage_tree);
break;
case INFO_REPLY_IP4:
dissect_INFO_REPLY_IP4(tvb, pinfo, offset, flags, little_endian, octects_to_next_header, rtps_submessage_tree);
break;
case INFO_DST:
dissect_INFO_DST(tvb, pinfo, offset, flags, little_endian, octects_to_next_header, rtps_submessage_tree);
break;
case INFO_REPLY:
dissect_INFO_REPLY(tvb, pinfo, offset, flags, little_endian, octects_to_next_header, rtps_submessage_tree);
break;
default:
if (tree) {
proto_tree_add_uint(rtps_submessage_tree, hf_rtps_sm_flags,
tvb, offset + 1, 1, flags);
proto_tree_add_uint(rtps_submessage_tree,
hf_rtps_sm_octets_to_next_header,
tvb, offset + 2, 2, next_submsg);
}
break;
}
/* next submessage's offset */
offset = next_submsg;
}
/* If TCP there's an extra OOB byte at the end of the message */
/* TODO: What to do with it? */
return TRUE;
} /* dissect_rtps(...) */
void proto_register_rtps(void) {
static hf_register_info hf[] = {
/* Protocol Version (composed as major.minor) -------------------------- */
{ &hf_rtps_protocol_version, {
"version",
"rtps.version",
FT_UINT16,
BASE_HEX,
NULL,
0,
"RTPS protocol version number",
HFILL }
},
{ &hf_rtps_protocol_version_major, {
"major",
"rtps.version.major",
FT_INT8,
BASE_DEC,
NULL,
0,
"RTPS major protocol version number",
HFILL }
},
{ &hf_rtps_protocol_version_minor, {
"minor",
"rtps.version.minor",
FT_INT8,
BASE_DEC,
NULL,
0,
"RTPS minor protocol version number",
HFILL }
},
/* Domain Participant and Participant Index ---------------------------- */
{ &hf_rtps_domain_id, {
"domain_id",
"rtps.domain_id",
FT_UINT32,
BASE_DEC,
NULL,
0,
"Domain ID",
HFILL }
},
{ &hf_rtps_participant_idx, {
"participant_idx",
"rtps.participant_idx",
FT_UINT32,
BASE_DEC,
NULL,
0,
"Participant index",
HFILL }
},
{ &hf_rtps_nature_type, {
"traffic_nature",
"rtps.traffic_nature",
FT_UINT32,
BASE_DEC,
VALS(nature_type_vals),
0,
"Nature of the traffic (meta/user-traffic uni/multi-cast)",
HFILL }
},
/* Vendor ID ----------------------------------------------------------- */
{ &hf_rtps_vendor_id, {
"vendorId",
"rtps.vendorId",
FT_UINT16,
BASE_HEX,
NULL,
0,
"Unique identifier of the DDS vendor that generated this packet",
HFILL }
},
/* Guid Prefix for the Packet ------------------------------------------ */
{ &hf_rtps_guid_prefix, {
"guidPrefix",
"rtps.guidPrefix",
FT_UINT64,
BASE_HEX,
NULL,
0,
"GuidPrefix of the RTPS packet",
HFILL }
},
/* Host ID ------------------------------------------------------------- */
{ &hf_rtps_host_id, { /* HIDDEN */
"hostId",
"rtps.hostId",
FT_UINT32,
BASE_HEX,
NULL,
0,
"Sub-component 'hostId' of the GuidPrefix of the RTPS packet",
HFILL }
},
/* AppID (composed as instanceId, appKind) ----------------------------- */
{ &hf_rtps_app_id, {
"appId",
"rtps.appId",
FT_UINT32,
BASE_HEX,
NULL,
0,
"Sub-component 'appId' of the GuidPrefix of the RTPS packet",
HFILL }
},
{ &hf_rtps_app_id_instance_id, {
"appId.instanceId",
"rtps.appId.instanceId",
FT_UINT24,
BASE_HEX,
NULL,
0,
"'instanceId' field of the 'AppId' structure",
HFILL }
},
{ &hf_rtps_app_id_app_kind, {
"appid.appKind",
"rtps.appId.appKind",
FT_UINT8,
BASE_HEX,
VALS(app_kind_vals),
0,
"'appKind' field of the 'AppId' structure",
HFILL }
},
/* Submessage ID ------------------------------------------------------- */
{ &hf_rtps_sm_id, {
"submessageId",
"rtps.sm.id",
FT_UINT8,
BASE_HEX,
VALS(submessage_id_vals),
0,
"defines the type of submessage",
HFILL }
},
/* Submessage flags ---------------------------------------------------- */
{ &hf_rtps_sm_flags, {
"flags",
"rtps.sm.flags",
FT_UINT8,
BASE_HEX,
NULL,
0,
"bitmask representing the flags associated with a submessage",
HFILL }
},
/* Octects to next header ---------------------------------------------- */
{ &hf_rtps_sm_octets_to_next_header, {
"octetsToNextHeader",
"rtps.sm.octetsToNextHeader",
FT_UINT16,
BASE_DEC,
NULL,
0,
"Size of the submessage payload",
HFILL }
},
/* GUID as {GuidPrefix, EntityId} ------------------------------------ */
{ &hf_rtps_sm_guid_prefix, {
"guidPrefix",
"rtps.sm.guidPrefix",
FT_UINT64,
BASE_HEX,
NULL,
0,
"a generic guidPrefix that is transmitted inside the submessage (this is NOT the guidPrefix described in the packet header",
HFILL }
},
{ &hf_rtps_sm_host_id, {
"host_id",
"rtps.sm.guidPrefix.hostId",
FT_UINT32,
BASE_HEX,
NULL,
0,
"The hostId component of the rtps.sm.guidPrefix",
HFILL }
},
{ &hf_rtps_sm_app_id, {
"appId",
"rtps.sm.guidPrefix.appId",
FT_UINT32,
BASE_HEX,
NULL,
0,
"AppId component of the rtps.sm.guidPrefix",
HFILL }
},
{ &hf_rtps_sm_instance_id, {
"instanceId",
"rtps.sm.guidPrefix.appId.instanceId",
FT_UINT24,
BASE_HEX,
NULL,
0,
"instanceId component of the AppId of the rtps.sm.guidPrefix",
HFILL }
},
{ &hf_rtps_sm_app_kind, {
"appKind",
"rtps.sm.guidPrefix.appId.appKind",
FT_UINT8,
BASE_HEX,
NULL,
0,
"appKind component of the AppId of the rtps.sm.guidPrefix",
HFILL }
},
/* Entity ID (composed as entityKey, entityKind) ----------------------- */
{ &hf_rtps_sm_entity_id, {
"entityId",
"rtps.sm.entityId",
FT_UINT32,
BASE_HEX,
VALS(entity_id_vals),
0,
"Object entity ID as it appears in a DATA submessage (keyHashSuffix)",
HFILL }
},
{ &hf_rtps_sm_entity_id_key, {
"entityKey",
"rtps.sm.entityId.entityKey",
FT_UINT24,
BASE_HEX,
NULL,
0,
"'entityKey' field of the object entity ID",
HFILL }
},
{ &hf_rtps_sm_entity_id_kind, {
"entityKind",
"rtps.sm.entityId.entityKind",
FT_UINT8,
BASE_HEX,
VALS(entity_kind_vals),
0,
"'entityKind' field of the object entity ID",
HFILL }
},
{ &hf_rtps_sm_rdentity_id, {
"readerEntityId",
"rtps.sm.rdEntityId",
FT_UINT32,
BASE_HEX,
VALS(entity_id_vals),
0,
"Reader entity ID as it appears in a submessage",
HFILL }
},
{ &hf_rtps_sm_rdentity_id_key, {
"readerEntityKey",
"rtps.sm.rdEntityId.entityKey",
FT_UINT24,
BASE_HEX,
NULL,
0,
"'entityKey' field of the reader entity ID",
HFILL }
},
{ &hf_rtps_sm_rdentity_id_kind, {
"readerEntityKind",
"rtps.sm.rdEntityId.entityKind",
FT_UINT8,
BASE_HEX,
VALS(entity_kind_vals),
0,
"'entityKind' field of the reader entity ID",
HFILL }
},
{ &hf_rtps_sm_wrentity_id, {
"writerEntityId",
"rtps.sm.wrEntityId",
FT_UINT32,
BASE_HEX,
VALS(entity_id_vals),
0,
"Writer entity ID as it appears in a submessage",
HFILL }
},
{ &hf_rtps_sm_wrentity_id_key, {
"writerEntityKey",
"rtps.sm.wrEntityId.entityKey",
FT_UINT24,
BASE_HEX,
NULL,
0,
"'entityKey' field of the writer entity ID",
HFILL }
},
{ &hf_rtps_sm_wrentity_id_kind, {
"writerEntityKind",
"rtps.sm.wrEntityId.entityKind",
FT_UINT8,
BASE_HEX,
VALS(entity_kind_vals),
0,
"'entityKind' field of the writer entity ID",
HFILL }
},
/* Sequence number ----------------------------------------------------- */
{ &hf_rtps_sm_seq_number, {
"writerSeqNumber",
"rtps.sm.seqNumber",
FT_INT64,
BASE_DEC,
NULL,
0,
"Writer sequence number",
HFILL }
},
{ &hf_rtps_info_src_ip, {
"appIpAddress",
"rtps.info_src.ip",
FT_IPv4,
BASE_NONE,
NULL,
0,
NULL,
HFILL }
},
{ &hf_rtps_info_src_unused, {
"Unused",
"rtps.info_src.unused",
FT_UINT32,
BASE_HEX,
NULL,
0,
NULL,
HFILL }
},
/* Parameter Id -------------------------------------------------------- */
{ &hf_rtps_parameter_id, {
"parameterId",
"rtps.param.id",
FT_UINT16,
BASE_HEX,
VALS(parameter_id_vals),
0,
"Parameter Id",
HFILL }
},
/* Parameter Length ---------------------------------------------------- */
{ &hf_rtps_parameter_length, {
"parameterLength",
"rtps.param.length",
FT_UINT16,
BASE_DEC,
NULL,
0,
"Parameter Length",
HFILL }
},
/* Parameter / Topic --------------------------------------------------- */
{ &hf_rtps_param_topic_name, {
"topic",
"rtps.param.topicName",
FT_STRINGZ,
BASE_NONE,
NULL,
0,
"String representing the value value of a PID_TOPIC parameter",
HFILL }
},
/* Parameter / Strength ------------------------------------------------ */
{ &hf_rtps_param_strength, {
"strength",
"rtps.param.strength",
FT_INT32,
BASE_DEC,
NULL,
0,
"Decimal value representing the value of a PID_OWNERSHIP_STRENGTH parameter",
HFILL }
},
/* Parameter / Type Name ----------------------------------------------- */
{ &hf_rtps_param_type_name, {
"typeName",
"rtps.param.typeName",
FT_STRINGZ,
BASE_NONE,
NULL,
0,
"String representing the value of a PID_TYPE_NAME parameter",
HFILL }
},
/* Parameter / User Data ----------------------------------------------- */
{ &hf_rtps_param_user_data, {
"userData",
"rtps.param.userData",
FT_BYTES,
BASE_NONE,
NULL,
0,
"The user data sent in a PID_USER_DATA parameter",
HFILL }
},
/* Parameter / Group Data ---------------------------------------------- */
{ &hf_rtps_param_group_data, {
"groupData",
"rtps.param.groupData",
FT_BYTES,
BASE_NONE,
NULL,
0,
"The user data sent in a PID_GROUP_DATA parameter",
HFILL }
},
/* Parameter / Topic Data ---------------------------------------------- */
{ &hf_rtps_param_topic_data, {
"topicData",
"rtps.param.topicData",
FT_BYTES,
BASE_NONE,
NULL,
0,
"The user data sent in a PID_TOPIC_DATA parameter",
HFILL }
},
/* Parameter / Content Filter Name ------------------------------------- */
{ &hf_rtps_param_content_filter_name, {
"contentFilterName",
"rtps.param.contentFilterName",
FT_STRINGZ,
BASE_NONE,
NULL,
0,
"Value of the content filter name as sent in a PID_CONTENT_FILTER_PROPERTY parameter",
HFILL }
},
{ &hf_rtps_param_related_topic_name, {
"relatedTopicName",
"rtps.param.relatedTopicName",
FT_STRINGZ,
BASE_NONE,
NULL,
0,
"Value of the related topic name as sent in a PID_CONTENT_FILTER_PROPERTY parameter",
HFILL }
},
{ &hf_rtps_param_filter_name, {
"filterName",
"rtps.param.filterName",
FT_STRINGZ,
BASE_NONE,
NULL,
0,
"Value of the filter name as sent in a PID_CONTENT_FILTER_PROPERTY parameter",
HFILL }
},
{ &hf_rtps_durability_service_cleanup_delay,
{ "Service Cleanup Delay", "rtps.durability.service_cleanup_delay",
FT_ABSOLUTE_TIME, ABSOLUTE_TIME_UTC, NULL, 0,
"Time using the NTP standard format", HFILL }
},
{ &hf_rtps_liveliness_lease_duration,
{ "Lease Duration", "rtps.liveliness.lease_duration",
FT_ABSOLUTE_TIME, ABSOLUTE_TIME_UTC, NULL, 0,
"Time using the NTP standard format", HFILL }
},
{ &hf_rtps_participant_lease_duration,
{ "Duration", "rtps.participant_lease_duration",
FT_ABSOLUTE_TIME, ABSOLUTE_TIME_UTC, NULL, 0,
"Time using the NTP standard format", HFILL }
},
{ &hf_rtps_time_based_filter_minimum_separation,
{ "Minimum Separation", "rtps.time_based_filter.minimum_separation",
FT_ABSOLUTE_TIME, ABSOLUTE_TIME_UTC, NULL, 0,
"Time using the NTP standard format", HFILL }
},
{ &hf_rtps_reliability_max_blocking_time,
{ "Max Blocking Time", "rtps.reliability.max_blocking_time",
FT_ABSOLUTE_TIME, ABSOLUTE_TIME_UTC, NULL, 0,
"Time using the NTP standard format", HFILL }
},
{ &hf_rtps_deadline_period,
{ "Period", "rtps.deadline_period",
FT_ABSOLUTE_TIME, ABSOLUTE_TIME_UTC, NULL, 0,
"Time using the NTP standard format", HFILL }
},
{ &hf_rtps_latency_budget_duration,
{ "Duration", "rtps.latency_budget.duration",
FT_ABSOLUTE_TIME, ABSOLUTE_TIME_UTC, NULL, 0,
"Time using the NTP standard format", HFILL }
},
{ &hf_rtps_lifespan_duration,
{ "Duration", "rtps.lifespan",
FT_ABSOLUTE_TIME, ABSOLUTE_TIME_UTC, NULL, 0,
"Time using the NTP standard format", HFILL }
},
{ &hf_rtps_persistence,
{ "Persistence", "rtps.persistence",
FT_ABSOLUTE_TIME, ABSOLUTE_TIME_UTC, NULL, 0,
"Time using the NTP standard format", HFILL }
},
{ &hf_rtps_info_ts_timestamp,
{ "Timestamp", "rtps.info_ts.timestamp",
FT_ABSOLUTE_TIME, ABSOLUTE_TIME_UTC, NULL, 0,
"Time using the NTP standard format", HFILL }
},
{ &hf_rtps_locator_kind,
{ "Kind", "rtps.locator.kind",
FT_UINT32, BASE_HEX, VALS(rtps_locator_kind_vals), 0,
NULL, HFILL }
},
{ &hf_rtps_locator_port,
{ "Port", "rtps.locator.port",
FT_INT32, BASE_DEC, NULL, 0,
NULL, HFILL }
},
{ &hf_rtps_locator_ipv4,
{ "Address", "rtps.locator.ipv4",
FT_IPv4, BASE_NONE, NULL, 0,
NULL, HFILL }
},
{ &hf_rtps_locator_ipv6,
{ "Address", "rtps.locator.ipv6",
FT_IPv6, BASE_NONE, NULL, 0,
NULL, HFILL }
},
{ &hf_rtps_participant_builtin_endpoints,
{ "BuiltIn Endpoint", "rtps.participant_builtin_endpoints",
FT_UINT32, BASE_HEX, NULL, 0,
NULL, HFILL }
},
{ &hf_rtps_participant_manual_liveliness_count,
{ "Manual Liveliness Count", "rtps.participant_manual_liveliness_count",
FT_UINT32, BASE_HEX, NULL, 0,
NULL, HFILL }
},
{ &hf_rtps_history_depth,
{ "Depth", "rtps.history_depth",
FT_INT32, BASE_DEC, NULL, 0,
NULL, HFILL }
},
{ &hf_rtps_resource_limit_max_samples,
{ "Max Samples", "rtps.resource_limit.max_samples",
FT_INT32, BASE_DEC, NULL, 0,
NULL, HFILL }
},
{ &hf_rtps_resource_limit_max_instances,
{ "Max Instances", "rtps.resource_limit.max_instances",
FT_INT32, BASE_DEC, NULL, 0,
NULL, HFILL }
},
{ &hf_rtps_resource_limit_max_samples_per_instances,
{ "Max Samples Per Instance", "rtps.resource_limit.max_samples_per_instance",
FT_INT32, BASE_DEC, NULL, 0,
NULL, HFILL }
},
{ &hf_rtps_filter_bitmap,
{ "Filter Bitmap", "rtps.filter_bitmap",
FT_UINT32, BASE_HEX, NULL, 0,
NULL, HFILL }
},
{ &hf_rtps_type_checksum,
{ "Checksum", "rtps.type_checksum",
FT_UINT32, BASE_HEX, NULL, 0,
NULL, HFILL }
},
{ &hf_rtps_queue_size,
{ "queueSize", "rtps.queue_size",
FT_UINT32, BASE_HEX, NULL, 0,
NULL, HFILL }
},
{ &hf_rtps_acknack_counter,
{ "Counter", "rtps.acknack.counter",
FT_INT32, BASE_DEC, NULL, 0,
NULL, HFILL }
},
{ &hf_rtps_durability_service_history_kind,
{ "History Kind", "rtps.durability_service.history_kind",
FT_UINT32, BASE_HEX, VALS(history_qos_vals), 0,
NULL, HFILL }
},
{ &hf_rtps_durability_service_history_depth,
{ "History Depth", "rtps.durability_service.history_depth",
FT_INT32, BASE_DEC, NULL, 0,
NULL, HFILL }
},
{ &hf_rtps_durability_service_max_samples,
{ "Max Samples", "rtps.durability_service.max_samples",
FT_INT32, BASE_DEC, NULL, 0,
NULL, HFILL }
},
{ &hf_rtps_durability_service_max_instances,
{ "Max Instances", "rtps.durability_service.max_instances",
FT_INT32, BASE_DEC, NULL, 0,
NULL, HFILL }
},
{ &hf_rtps_durability_service_max_samples_per_instances,
{ "Max Samples Per Instance", "rtps.durability_service.max_samples_per_instance",
FT_INT32, BASE_DEC, NULL, 0,
NULL, HFILL }
},
{ &hf_rtps_liveliness_kind,
{ "Kind", "rtps.liveliness.kind",
FT_UINT32, BASE_HEX, VALS(liveliness_qos_vals), 0,
NULL, HFILL }
},
{ &hf_rtps_manager_key,
{ "Key", "rtps.manager_key",
FT_UINT32, BASE_HEX, NULL, 0,
NULL, HFILL }
},
{ &hf_rtps_locator_udp_v4,
{ "Address", "rtps.locator_udp_v4.ip",
FT_IPv4, BASE_NONE, NULL, 0,
NULL, HFILL }
},
{ &hf_rtps_locator_udp_v4_port,
{ "Port", "rtps.locator_udp_v4.port",
FT_UINT32, BASE_HEX, NULL, 0,
NULL, HFILL }
},
{ &hf_param_ip_address,
{ "Address", "rtps.param.ip_address",
FT_IPv4, BASE_NONE, NULL, 0,
NULL, HFILL }
},
{ &hf_rtps_param_port,
{ "Port", "rtps.param.port",
FT_UINT32, BASE_HEX, NULL, 0,
NULL, HFILL }
},
{ &hf_rtps_expects_inline_qos,
{ "Inline QoS", "rtps.expects_inline_qos",
FT_BOOLEAN, 8, TFS(&tfs_true_false), 0,
NULL, HFILL }
},
{ &hf_rtps_presentation_coherent_access,
{ "Coherent Access", "rtps.presentation.coherent_access",
FT_BOOLEAN, 8, TFS(&tfs_true_false), 0,
NULL, HFILL }
},
{ &hf_rtps_presentation_ordered_access,
{ "Ordered Access", "rtps.presentation.ordered_access",
FT_BOOLEAN, 8, TFS(&tfs_true_false), 0,
NULL, HFILL }
},
{ &hf_rtps_expects_ack,
{ "expectsAck", "rtps.expects_ack",
FT_BOOLEAN, 8, TFS(&tfs_true_false), 0,
NULL, HFILL }
},
{ &hf_rtps_reliability_kind,
{ "Kind", "rtps.reliability_kind",
FT_UINT32, BASE_HEX, VALS(reliability_qos_vals), 0,
NULL, HFILL }
},
{ &hf_rtps_durability,
{ "Durability", "rtps.durability",
FT_UINT32, BASE_HEX, VALS(durability_qos_vals), 0,
NULL, HFILL }
},
{ &hf_rtps_ownership,
{ "Kind", "rtps.ownership",
FT_UINT32, BASE_HEX, VALS(ownership_qos_vals), 0,
NULL, HFILL }
},
{ &hf_rtps_presentation_access_scope,
{ "Access Scope", "rtps.presentation.access_scope",
FT_UINT32, BASE_HEX, VALS(presentation_qos_vals), 0,
NULL, HFILL }
},
{ &hf_rtps_destination_order,
{ "Kind", "rtps.destination_order",
FT_UINT32, BASE_HEX, VALS(destination_order_qos_vals), 0,
NULL, HFILL }
},
{ &hf_rtps_history_kind,
{ "Kind", "rtps.history.kind",
FT_UINT32, BASE_HEX, VALS(history_qos_vals), 0,
NULL, HFILL }
},
/* Finally the raw issue data ------------------------------------------ */
{ &hf_rtps_issue_data, {
"serializedData",
"rtps.issueData",
FT_BYTES,
BASE_NONE,
NULL,
0,
"The user data transferred in a ISSUE submessage",
HFILL }
},
};
static gint *ett[] = {
&ett_rtps,
&ett_rtps_default_mapping,
&ett_rtps_proto_version,
&ett_rtps_submessage,
&ett_rtps_parameter_sequence,
&ett_rtps_parameter,
&ett_rtps_flags,
&ett_rtps_entity,
&ett_rtps_rdentity,
&ett_rtps_wrentity,
&ett_rtps_guid_prefix,
&ett_rtps_app_id,
&ett_rtps_locator_udp_v4,
&ett_rtps_locator,
&ett_rtps_locator_list,
&ett_rtps_ntp_time,
&ett_rtps_bitmap,
&ett_rtps_seq_string,
&ett_rtps_seq_ulong,
&ett_rtps_resource_limit,
&ett_rtps_durability_service,
&ett_rtps_liveliness,
&ett_rtps_manager_key
};
proto_rtps = proto_register_protocol(
"Real-Time Publish-Subscribe Wire Protocol",
"RTPS",
"rtps");
proto_register_field_array(proto_rtps, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
}
void proto_reg_handoff_rtps(void) {
heur_dissector_add("udp", dissect_rtps, proto_rtps);
heur_dissector_add("tcp", dissect_rtps, proto_rtps);
}
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