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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.
* 3975 Freedom Circle
* Santa Clara, CA 95054
*
* 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@ethereal.com>
* 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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
*
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <glib.h>
#include <epan/packet.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_SUMMARY_SIZE (500)
#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-)";
/* This structure is used to keep a list of submessages for the current
* packet. The list is ordered by position of the submessage Id inside
* the packet.
* Submessages of the same kind are grouped together in one record.
*/
struct SMCounterRecord {
int id; /* PAD, DATA, ... */
const char * extra; /* (r+, w+)... */
struct SMCounterRecord * next; /* Ptr to next */
};
/***************************************************************************/
/* 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_parameter_id = -1;
static int hf_rtps_parameter_length = -1;
static int hf_rtps_param_ntpt = -1;
static int hf_rtps_param_ntpt_sec = -1;
static int hf_rtps_param_ntpt_fraction = -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;
/* 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;
/***************************************************************************/
/* Value-to-String Tables */
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 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_DEFAULT_EXPECTS_INLINE_QOS, "PID_DEFAULT_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, "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
* ~~~~~~~~~~~~~~~~~~~
*/
/* Sm management */
static struct SMCounterRecord * sm_counter_add(struct SMCounterRecord *, guint8, const char * const extra);
static void sm_counter_free(struct SMCounterRecord *);
/* Utility to add elements to the protocol tree */
static void rtps_util_format_ipv6(guint8 *, guint8 *, gint);
static void rtps_util_add_protocol_version(proto_tree *, tvbuff_t *, gint);
static void rtps_util_add_vendor_id(proto_tree *, tvbuff_t *,
gint, guint8 *, gint);
static void rtps_util_add_locator_t(proto_tree *, tvbuff_t *,
gint, int, const guint8 *, guint8 *, gint);
static void rtps_util_add_locator_list(proto_tree *, tvbuff_t *,
gint, const guint8 *, int);
static void rtps_util_add_ipv4_address_t(proto_tree *, tvbuff_t *,
gint, int, const guint8 *, guint8 *, gint);
static void rtps_util_add_locator_udp_v4(proto_tree *, tvbuff_t *,
gint, const guint8 *, int);
static void rtps_util_add_guid_prefix(proto_tree *, tvbuff_t *,
gint, int, int, int, int, int, const guint8 *,
guint8 *, gint);
static int rtps_util_add_entity_id(proto_tree *, tvbuff_t *,
gint, int, int, int, int, const char *, guint32 *);
static void rtps_util_add_generic_entity_id(proto_tree *, tvbuff_t *,
gint, const char *,
guint8 *, gint);
static void rtps_util_add_generic_guid(proto_tree *, tvbuff_t *,
gint, const char *, guint8 *, gint);
static guint64 rtps_util_add_seq_number(proto_tree *, tvbuff_t *,
gint, int, const char *);
static void rtps_util_add_ntp_time(proto_tree *, tvbuff_t *,
gint, int, const char *, guint8 *, gint);
static gint rtps_util_add_string(proto_tree *, tvbuff_t *,
gint, int, int, const guint8 *, guint8 *, gint);
static void rtps_util_add_long(proto_tree *, tvbuff_t *,
gint, int, int, gboolean, gboolean, const char *,
guint8 *, gint);
static void rtps_util_add_port(proto_tree *, tvbuff_t *,
gint, int, char *, guint8 *, gint);
static void rtps_util_add_boolean(proto_tree *, tvbuff_t *,
gint, char *, guint8 *, gint);
static void rtps_util_add_durability_service_qos(proto_tree *, tvbuff_t *,
gint, int, guint8 *, gint);
static void rtps_util_add_liveliness_qos(proto_tree *, tvbuff_t *,
gint, int, guint8 *, gint);
static void rtps_util_add_kind_qos(proto_tree *, tvbuff_t *,
gint, int, char *, const value_string *, guint8 *, gint);
static gint rtps_util_add_seq_string(proto_tree *, tvbuff_t *,
gint, int, int, char *, guint8 *, gint);
static void rtps_util_add_seq_octets(proto_tree *, tvbuff_t *,
gint, int, int, int, 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 *);
static gint rtps_util_add_seq_ulong(proto_tree *, tvbuff_t *,
gint, int, int, int, int, char *);
/* The parameter dissector */
static gint dissect_parameter_sequence(proto_tree *, tvbuff_t *,
gint, int, int, const char *);
/* Sub-message dissector functions */
static void dissect_DATA(tvbuff_t *tvb,gint offset,guint8 flags,
gboolean little_endian,int next_submsg_offset,
proto_tree *rtps_submessage_tree,
const char **sm_extra);
static void dissect_NOKEY_DATA(tvbuff_t *tvb,gint offset,guint8 flags,
gboolean little_endian,int next_submsg_offset,
proto_tree *rtps_submessage_tree);
static void dissect_ACKNACK(tvbuff_t *tvb,gint offset,guint8 flags,
gboolean little_endian,int next_submsg_offset,
proto_tree *rtps_submessage_tree);
static void dissect_HEARTBEAT(tvbuff_t *tvb,gint offset,guint8 flags,
gboolean little_endian,int next_submsg_offset,
proto_tree *rtps_submessage_tree);
static void dissect_GAP(tvbuff_t *tvb,gint offset,guint8 flags,
gboolean little_endian,int next_submsg_offset,
proto_tree *rtps_submessage_tree);
static void dissect_INFO_TS(tvbuff_t *tvb,gint offset,guint8 flags,
gboolean little_endian,int next_submsg_offset,
proto_tree *rtps_submessage_tree);
static void dissect_INFO_SRC(tvbuff_t *tvb,gint offset,guint8 flags,
gboolean little_endian,int next_submsg_offset,
proto_tree *rtps_submessage_tree);
static void dissect_INFO_REPLY_IP4(tvbuff_t *tvb,gint offset,guint8 flags,
gboolean little_endian,int next_submsg_offset,
proto_tree *rtps_submessage_tree);
static void dissect_INFO_DST(tvbuff_t *tvb,gint offset,guint8 flags,
gboolean little_endian,int next_submsg_offset,
proto_tree *rtps_submessage_tree);
static void dissect_INFO_REPLY(tvbuff_t *tvb,gint offset,guint8 flags,
gboolean little_endian,int next_submsg_offset,
proto_tree *rtps_submessage_tree);
/* The main packet dissector */
static gboolean dissect_rtps(tvbuff_t *, packet_info *, proto_tree *);
/***************************************************************************/
/* 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))
/* *********************************************************************** */
/* Adds a new record to the SMCounterRecord archive
* It always inserts to the end of the list. Insert is not performed if
* the last element is like the current one.
* Parameters:
* last = ptr to the last element or NULL if the list is empty
*
* Returns:
* ptr to the last element of the list or NULL if out of memory occurred.
*/
static struct SMCounterRecord * sm_counter_add(
struct SMCounterRecord *last,
guint8 submessage,
const char * const extra) { /* Can be NULL */
#if 0
if ((last == NULL) || (last->id != submessage)) {
struct SMCounterRecord *ptr;
/* Add message */
ptr = (struct SMCounterRecord *)g_malloc(sizeof(struct SMCounterRecord));
if (ptr == NULL) {
return NULL;
}
ptr->id = submessage;
ptr->counter = 1;
ptr->next = NULL;
if (last) {
last->next = ptr;
}
return ptr;
}
last->counter++;
#endif
struct SMCounterRecord *ptr;
ptr = (struct SMCounterRecord *)g_malloc(sizeof(struct SMCounterRecord));
if (ptr == NULL) {
return NULL;
}
ptr->id = submessage;
ptr->extra = extra;
ptr->next = NULL;
if (last) {
last->next = ptr;
}
return ptr;
}
/* Free the entire list */
static void sm_counter_free(struct SMCounterRecord *head) {
struct SMCounterRecord *ptr;
while (head != NULL) {
ptr = head->next;
g_free(ptr);
head = ptr;
}
}
/* *********************************************************************** */
/* Format the given address (16 octects) as an IPv6 address
*/
static void rtps_util_format_ipv6(guint8 *addr,
guint8 *buffer,
gint buffer_size) {
guint32 i;
guint8 temp[5]; /* Contains a 4-digit hex value */
buffer[0] = '\0';
for (i = 0; i < 16; i+=2) {
/* Unfortunately %x is the same thing as %02x all the time... sigh */
g_snprintf(temp, 5, "%02x%02x", addr[i], addr[i+1]);
if (temp[0] == '0') {
if (temp[1] == '0') {
if (temp[2] == '0') {
g_strlcat(buffer, &temp[3], buffer_size);
} else {
g_strlcat(buffer, &temp[2], buffer_size);
}
} else {
g_strlcat(buffer, &temp[1], buffer_size);
}
} else {
g_strlcat(buffer, temp, buffer_size);
}
if (i < 14) {
g_strlcat(buffer, ":", buffer_size);
}
}
}
/* *********************************************************************** */
static void rtps_util_add_protocol_version(proto_tree *tree, /* Can NOT be NULL */
tvbuff_t * tvb,
gint offset) {
proto_item * ti;
proto_tree * version_tree;
guint8 major = 0;
guint8 minor = 0;
major = tvb_get_guint8(tvb, offset);
minor = tvb_get_guint8(tvb, offset+1);
ti = proto_tree_add_none_format(tree,
hf_rtps_protocol_version,
tvb,
offset,
2,
"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,
FALSE);
proto_tree_add_item(version_tree,
hf_rtps_protocol_version_minor,
tvb,
offset+1,
1,
FALSE);
}
/* ------------------------------------------------------------------------- */
/* Interpret the next bytes as vendor ID. If proto_tree and field ID is
* provided, it can also set.
*/
static void rtps_util_add_vendor_id(proto_tree *tree, /* Can be NULL */
tvbuff_t * tvb,
gint offset,
guint8 * buffer, /* Can be NULL */
gint buffer_size) { /* Can be 0 */
guint8 major, minor;
guint32 vendor_id = 0;
guint8 vendor_name[MAX_VENDOR_ID_SIZE];
major = tvb_get_guint8(tvb, offset);
minor = tvb_get_guint8(tvb, offset+1);
vendor_id = (major<<8) | minor;
switch(vendor_id) {
case RTPS_VENDOR_UNKNOWN:
g_strlcpy(vendor_name, RTPS_VENDOR_UNKNOWN_STRING, MAX_VENDOR_ID_SIZE);
break;
case RTPS_VENDOR_RTI:
g_strlcpy(vendor_name, RTPS_VENDOR_RTI_STRING, MAX_VENDOR_ID_SIZE);
break;
default:
g_snprintf(vendor_name, MAX_VENDOR_ID_SIZE, "%d.%d", major, minor);
}
if (tree != NULL) {
proto_tree_add_uint_format(tree,
hf_rtps_vendor_id,
tvb,
offset,
2,
vendor_id,
"vendor: %s",
vendor_name);
}
if (buffer != NULL) {
g_strlcpy(buffer, vendor_name, buffer_size);
}
}
/* ------------------------------------------------------------------------- */
/* 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;
*/
static void rtps_util_add_locator_t(proto_tree *tree, /* Can NOT be NULL */
tvbuff_t * tvb,
gint offset,
int little_endian,
const guint8 * label,
guint8 * buffer, /* Can be NULL */
gint buffer_size) { /* Can be 0 */
proto_item * ti;
proto_tree * locator_tree;
gint32 kind;
guint8 addr[16];
guint32 port;
char temp_buff[MAX_LOCATOR_SIZE];
char addr_buff[MAX_IPV6_SIZE];
const char *kind_string = NULL;
int i;
kind = NEXT_guint32(tvb, offset, little_endian);
port = NEXT_guint32(tvb, offset+4, little_endian);
for (i = 0; i < 16; ++i) {
addr[i] = tvb_get_guint8(tvb, offset + 8 + i);
}
switch(kind) {
case LOCATOR_KIND_UDPV4:
kind_string = "LOCATOR_KIND_UDPV4";
g_snprintf(addr_buff, MAX_IPV6_SIZE,
"%d.%d.%d.%d",
addr[12],
addr[13],
addr[14],
addr[15]);
g_snprintf(temp_buff, MAX_LOCATOR_SIZE, "%s:%d",
addr_buff,
port);
break;
case LOCATOR_KIND_UDPV6:
kind_string = "LOCATOR_KIND_UDPV6";
rtps_util_format_ipv6(addr, &addr_buff[0], MAX_IPV6_SIZE);
g_snprintf(temp_buff, MAX_LOCATOR_SIZE,
"IPv6: { addr=%s, port=%d }",
addr_buff,
port);
break;
case LOCATOR_KIND_INVALID:
kind_string = "LOCATOR_KIND_INVALID";
case LOCATOR_KIND_RESERVED:
if (!kind_string) /* Need to guard overrides (no break before) */
kind_string = "LOCATOR_KIND_RESERVED";
default:
if (!kind_string) /* Need to guard overrides (no break before) */
kind_string = "(unknown)";
g_snprintf(temp_buff, MAX_LOCATOR_SIZE,
"{ kind=%02x, port=%d, addr=%02x %02x %02x ... %02x %02x }",
kind,
port,
addr[0],
addr[1],
addr[2],
/* ... */
addr[14],
addr[15]);
}
ti = proto_tree_add_text(tree,
tvb,
offset,
24,
"%s: %s",
label,
temp_buff);
locator_tree = proto_item_add_subtree(ti,
ett_rtps_locator);
proto_tree_add_text(locator_tree,
tvb,
offset,
4,
"kind: %02x (%s)",
kind,
kind_string);
proto_tree_add_text(locator_tree,
tvb,
offset+4,
4,
"port: %d%s",
port,
(port == 0) ? " (PORT_INVALID)" : "");
proto_tree_add_text(locator_tree,
tvb,
offset + 8,
16,
"address: %s",
addr_buff);
if (buffer) {
g_strlcpy(buffer, temp_buff, buffer_size);
}
}
/* ------------------------------------------------------------------------- */
/* Insert in the protocol tree the next bytes interpreted as a list of
* Locators:
* - unsigned long numLocators
* - locator 1
* - locator 2
* - ...
* - locator n
*/
static void rtps_util_add_locator_list(proto_tree *tree,
tvbuff_t * tvb,
gint offset,
const guint8 * label,
int little_endian) {
proto_item *ti;
proto_tree *locator_tree;
guint32 num_locators;
num_locators = NEXT_guint32(tvb, offset, little_endian);
ti = proto_tree_add_text(tree,
tvb,
offset,
4,
"%s: %d Locators",
label,
num_locators);
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(tree,
tvb,
offset + 4 + (i * 24),
little_endian,
temp_buff,
NULL,
0);
}
}
}
/* ------------------------------------------------------------------------- */
/* Insert in the protocol tree the next 4 bytes interpreted as IPV4Address_t
*/
static void rtps_util_add_ipv4_address_t(proto_tree *tree, /* Can be NULL */
tvbuff_t * tvb,
gint offset,
int little_endian,
const guint8 * label,
guint8 * buffer, /* Can be NULL */
gint buffer_size) { /* Can be 0 */
guint32 address;
address = NEXT_guint32(tvb, offset, little_endian);
if (address == IPADDRESS_INVALID) {
if (buffer) {
g_strlcpy(buffer, IPADDRESS_INVALID_STRING, buffer_size);
}
if (tree) {
proto_tree_add_text(tree,
tvb,
offset,
4,
"%s: %s",
label,
IPADDRESS_INVALID_STRING);
}
} else {
if (buffer) {
g_snprintf(buffer, buffer_size,
"%d.%d.%d.%d",
(address >> 24) & 0xff,
(address >> 16) & 0xff,
(address >> 8) & 0xff,
address & 0xff);
}
if (tree) {
proto_tree_add_text(tree,
tvb,
offset,
4,
"%s: %d.%d.%d.%d",
label,
(address >> 24) & 0xff,
(address >> 16) & 0xff,
(address >> 8) & 0xff,
address & 0xff);
}
}
}
/* ------------------------------------------------------------------------- */
/* 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;
*
*/
static void rtps_util_add_locator_udp_v4(proto_tree *tree, /* Can NOT be NULL */
tvbuff_t * tvb,
gint offset,
const guint8 * label,
int little_endian) {
proto_item * ti;
proto_tree * locator_tree;
guint32 port;
char portLabel[MAX_PORT_SIZE];
char address[MAX_IPV4_ADDRESS_SIZE];
port = NEXT_guint32(tvb, offset+4, little_endian);
if (port == PORT_INVALID) {
g_snprintf(portLabel, MAX_PORT_SIZE, "%s (0x00000000)", PORT_INVALID_STRING);
} else {
g_snprintf(portLabel, MAX_PORT_SIZE, "%u", port);
}
ti = proto_tree_add_text(tree,
tvb,
offset,
8,
"addr"); /* Add text later */
locator_tree = proto_item_add_subtree(ti, ett_rtps_locator_udp_v4);
rtps_util_add_ipv4_address_t(locator_tree,
tvb,
offset,
little_endian,
"address",
address,
MAX_IPV4_ADDRESS_SIZE);
proto_tree_add_text(locator_tree,
tvb,
offset + 4,
4,
"port: %s",
portLabel);
proto_item_set_text(ti, "%s: { address=%s, port=%s }",
label,
address,
portLabel);
}
/* ------------------------------------------------------------------------- */
/* 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, /* Can be NULL */
guint8 * buffer, /* Can be NULL */
gint buffer_size) {
guint32 host_id;
guint32 app_id;
guint32 instance_id;
guint8 app_kind;
guint8 * temp_buff;
guint8 guid_prefix[8];
const guint8 * safe_label;
int i;
safe_label = (label == NULL) ? (const guint8 *)"guidPrefix" : label;
/* Read values from TVB */
host_id = tvb_get_ntohl(tvb, offset);
app_id = tvb_get_ntohl(tvb, offset + 4);
for (i = 0; i < 8; ++i) {
guid_prefix[i] = tvb_get_guint8(tvb, offset+i);
}
instance_id = (app_id >> 8);
app_kind = (app_id & 0xff);
/* Format the string */
temp_buff = (guint8 *)g_malloc(MAX_GUID_PREFIX_SIZE);
g_snprintf(temp_buff, MAX_GUID_PREFIX_SIZE,
"%s=%02x%02x%02x%02x %02x%02x%02x%02x"
" { hostId=%08x, appId=%08x"
" (%s: %06x) }",
safe_label,
guid_prefix[0],
guid_prefix[1],
guid_prefix[2],
guid_prefix[3],
guid_prefix[4],
guid_prefix[5],
guid_prefix[6],
guid_prefix[7],
host_id,
app_id,
val_to_str(app_kind, app_kind_vals, "%02x"),
instance_id);
if (tree != NULL) {
proto_item * ti, *hidden_item;
proto_tree * guid_tree;
proto_tree * appid_tree;
/* The numeric value (used for searches) */
hidden_item = proto_tree_add_item(tree,
hf_prefix,
tvb,
offset,
8,
FALSE);
PROTO_ITEM_SET_HIDDEN(hidden_item);
/* The text node (root of the guid prefix sub-tree) */
ti = proto_tree_add_text(tree,
tvb,
offset,
8, "%s",
temp_buff);
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,
FALSE);
/* AppId (root of the app_id sub-tree */
ti = proto_tree_add_item(guid_tree,
hf_app_id,
tvb,
offset+4,
4,
FALSE);
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,
FALSE);
/* AppKind */
proto_tree_add_item(appid_tree,
hf_app_id_app_kind,
tvb,
offset+7,
1,
FALSE);
}
if (buffer != NULL) {
g_strlcpy(buffer, temp_buff, buffer_size);
}
g_free(temp_buff);
}
/* ------------------------------------------------------------------------- */
/* 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.
*/
static 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) { /* Can be NULL */
guint32 entity_id = tvb_get_ntohl(tvb, offset);
guint32 entity_key = (entity_id >> 8);
guint8 entity_kind = (entity_id & 0xff);
const char *str_predef = match_strval(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 (%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,
FALSE);
proto_tree_add_item(entity_tree,
hf_item_entity_kind,
tvb,
offset+3,
1,
FALSE);
}
/* 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).
*/
static 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 = match_strval(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.
*/
static guint64 rtps_util_add_seq_number(proto_tree *tree,
tvbuff_t * tvb,
gint offset,
int little_endian,
const char *label _U_) {
guint64 hi = (guint64)NEXT_guint32(tvb, offset, little_endian);
guint64 lo = (guint64)NEXT_guint32(tvb, offset+4, little_endian);
guint64 all = (hi << 32) | lo;
if (tree != NULL) {
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
*/
static void rtps_util_add_ntp_time(proto_tree *tree, /* Can be NULL */
tvbuff_t * tvb,
gint offset,
int little_endian,
const char * label,
guint8 * buffer, /* Can be NULL */
gint buffer_size) {
guint8 tempBuffer[MAX_NTP_TIME_SIZE];
gint32 sec = NEXT_guint32(tvb, offset, little_endian);
guint32 frac = NEXT_guint32(tvb, offset+4, little_endian);
double absolute;
if ((sec == 0x7fffffff) && (frac == 0xffffffff)) {
g_strlcpy(tempBuffer, "INFINITE", MAX_NTP_TIME_SIZE);
} else if ((sec == 0) && (frac == 0)) {
g_strlcpy(tempBuffer, "0 sec", MAX_NTP_TIME_SIZE);
} else {
absolute = (double)sec + (double)frac / ((double)(0x80000000) * 2.0);
g_snprintf(tempBuffer, MAX_NTP_TIME_SIZE,
"%f sec (%ds + 0x%08x)", absolute, sec, frac);
}
if (tree != NULL) {
proto_item * ti;
proto_tree *time_tree;
ti = proto_tree_add_none_format(tree,
hf_rtps_param_ntpt,
tvb,
offset,
8,
"%s: %s",
label,
tempBuffer);
time_tree = proto_item_add_subtree(ti, ett_rtps_ntp_time);
proto_tree_add_item(time_tree,
hf_rtps_param_ntpt_sec,
tvb,
offset,
4,
little_endian);
proto_tree_add_item(time_tree,
hf_rtps_param_ntpt_fraction,
tvb,
offset+4,
4,
little_endian);
}
if (buffer != NULL) {
g_strlcpy(buffer, tempBuffer, buffer_size);
}
}
/* ------------------------------------------------------------------------- */
/* Insert in the protocol tree the next data interpreted as a String
* Returns the new offset (after reading the string)
*/
static 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) */
int little_endian,
const guint8 * label, /* Can be NULL (if hf_item!=-1) */
guint8 * buffer, /* Can be NULL */
gint buffer_size) {
guint8 * retVal = NULL;
guint32 size = NEXT_guint32(tvb, offset, little_endian);
if (size > 0) {
retVal = tvb_get_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, buffer_size, "%s", retVal);
}
}
g_free(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 signed long.
*/
static void rtps_util_add_long(proto_tree *tree, /* Can be NULL */
tvbuff_t * tvb,
gint offset,
int hf_item, /* Can be -1 */
int little_endian,
gboolean is_hex, /* Format as 0x... */
gboolean is_signed, /* Signed/Unsigned */
const char *label, /* Can be NULL */
guint8 * buffer,
gint buffer_size) {
char temp_buff[16];
g_snprintf(temp_buff, 16,
(is_hex ? "0x%08x" : (is_signed ? "%d" : "%u")),
NEXT_guint32(tvb, offset, little_endian));
if (tree != NULL) {
if (hf_item != -1) {
proto_tree_add_item(tree,
hf_item,
tvb,
offset,
4,
little_endian);
} else if (label != NULL) {
proto_tree_add_text(tree,
tvb,
offset,
4,
"%s: %s",
label,
temp_buff);
}
}
if (buffer != NULL) {
g_strlcpy(buffer, temp_buff, buffer_size);
}
}
/* ------------------------------------------------------------------------- */
/* Insert in the protocol tree the next data interpreted as a port (unsigned
* 32-bit integer)
*/
static void rtps_util_add_port(proto_tree *tree, /* Can be NULL */
tvbuff_t * tvb,
gint offset,
int little_endian,
char * label,
guint8 * buffer, /* Can be NULL */
gint buffer_size) {
guint8 tempBuffer[MAX_PORT_SIZE];
guint32 value = NEXT_guint32(tvb, offset, little_endian);
if (value == PORT_INVALID) {
g_snprintf(buffer, buffer_size, "%s (0x00000000)", PORT_INVALID_STRING);
} else {
g_snprintf(tempBuffer, MAX_PORT_SIZE, "%u", value);
}
if (tree != NULL) {
proto_tree_add_text(tree,
tvb,
offset,
4,
"%s: %s",
label,
tempBuffer);
}
if (buffer != NULL) {
g_strlcpy(buffer, tempBuffer, buffer_size);
}
}
/* ------------------------------------------------------------------------- */
/* Insert in the protocol tree the next data interpreted as a boolean
* Returns the pointer to a dynamically allocated buffer containing the
* formatted version of the value.
*/
static void rtps_util_add_boolean(proto_tree *tree, /* Can be NULL */
tvbuff_t * tvb,
gint offset,
char * label,
guint8 * buffer, /* Can be NULL */
gint buffer_size) {
const char *str;
guint8 value = tvb_get_guint8(tvb, offset);
str = value ? "TRUE" : "FALSE";
if (buffer) {
g_strlcpy(buffer, str, buffer_size);
}
if (tree) {
proto_tree_add_text(tree,
tvb,
offset,
1,
"%s: %s",
label,
str);
}
}
/* ------------------------------------------------------------------------- */
/* Insert in the protocol tree the next bytes interpreted as
* DurabilityServiceQosPolicy
*/
static void rtps_util_add_durability_service_qos(proto_tree *tree,
tvbuff_t * tvb,
gint offset,
int little_endian,
guint8 * buffer,
gint buffer_size) {
guint8 temp_buffer[MAX_NTP_TIME_SIZE];
gint32 kind = NEXT_guint32(tvb, offset+8, little_endian);
gint32 history_depth = NEXT_guint32(tvb, offset+12, little_endian);
gint32 max_samples = NEXT_guint32(tvb, offset+16, little_endian);
gint32 max_instances = NEXT_guint32(tvb, offset+20, little_endian);
gint32 max_spi = NEXT_guint32(tvb, offset+24, little_endian);
rtps_util_add_ntp_time(NULL,
tvb,
offset,
little_endian,
NULL,
temp_buffer,
MAX_NTP_TIME_SIZE);
g_snprintf(buffer, buffer_size,
"{ service_cleanup_delay=%s, history_kind='%s', "
"history_depth=%d, max_samples=%d, max_instances=%d, "
"max_samples_per_instances=%d }",
temp_buffer,
val_to_str(kind, history_qos_vals, "0x%08x"),
history_depth,
max_samples,
max_instances,
max_spi);
rtps_util_add_ntp_time(tree,
tvb,
offset,
little_endian,
"service_cleanup_delay",
NULL,
0);
proto_tree_add_text(tree,
tvb,
offset+8,
4,
"history_kind: %s",
val_to_str(kind, history_qos_vals, "0x%08x"));
proto_tree_add_text(tree,
tvb,
offset+12,
4,
"history_depth: %d",
history_depth);
proto_tree_add_text(tree,
tvb,
offset+16,
4,
"max_samples: %d",
max_samples);
proto_tree_add_text(tree,
tvb,
offset+20,
4,
"max_instances: %d",
max_instances);
proto_tree_add_text(tree,
tvb,
offset+24,
4,
"max_samples_per_instances: %d",
max_spi);
}
/* ------------------------------------------------------------------------- */
/* Insert in the protocol tree the next bytes interpreted as Liveliness
* QoS Policy structure.
*/
static void rtps_util_add_liveliness_qos(proto_tree *tree,
tvbuff_t * tvb,
gint offset,
int little_endian,
guint8 * buffer,
gint buffer_size) {
guint8 temp_buffer[MAX_NTP_TIME_SIZE];
guint32 kind = NEXT_guint32(tvb, offset, little_endian);
rtps_util_add_ntp_time(NULL,
tvb,
offset+4,
little_endian,
NULL,
temp_buffer,
MAX_NTP_TIME_SIZE);
g_snprintf(buffer, buffer_size,
"{ kind=%s, lease_duration=%s }",
val_to_str(kind, liveliness_qos_vals, "0x%08x"),
temp_buffer);
proto_tree_add_text(tree,
tvb,
offset,
4,
"kind: %s",
val_to_str(kind, liveliness_qos_vals, "0x%08x"));
rtps_util_add_ntp_time(tree,
tvb,
offset+4,
little_endian,
"lease_duration",
NULL,
0);
}
/* ------------------------------------------------------------------------- */
/* Insert in the protocol tree the next bytes interpreted as enum type.
*/
static void rtps_util_add_kind_qos(proto_tree *tree, /* Can be NULL */
tvbuff_t * tvb,
gint offset,
int little_endian,
char * label,
const value_string *vals,
guint8 * buffer, /* Can be NULL */
gint buffer_size) {
guint32 kind = NEXT_guint32(tvb, offset, little_endian);
if (buffer) {
g_strlcpy(buffer, val_to_str(kind, vals, "0x%08x"),
buffer_size);
}
if (tree) {
proto_tree_add_text(tree,
tvb,
offset,
4,
"%s: %s",
label,
buffer);
}
}
/* ------------------------------------------------------------------------- */
/* 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
*/
static gint rtps_util_add_seq_string(proto_tree *tree, /* Can NOT be NULL */
tvbuff_t * tvb,
gint offset,
int little_endian,
int param_length,
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
*/
static gint rtps_util_add_seq_ulong(proto_tree *tree, /* Can NOT be NULL */
tvbuff_t * tvb,
gint offset,
int little_endian,
int param_length,
int is_hex,
int is_signed,
char * label) {
guint32 num_elem;
guint32 i;
proto_tree *string_tree;
proto_item *ti;
char temp_buff[MAX_LABEL_SIZE];
char overview_buff[MAX_PARAM_SIZE];
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,
param_length-8,
"Seq");
string_tree = proto_item_add_subtree(ti, ett_rtps_seq_ulong);
overview_buff[0] = '\0';
for (i = 0; i < num_elem; ++i) {
g_snprintf(temp_buff, MAX_LABEL_SIZE,
"%s[%d]",
label,
i);
rtps_util_add_long( string_tree,
tvb,
offset,
-1,
little_endian,
is_hex,
is_signed,
temp_buff,
overview_buff+strlen(overview_buff),
MAX_PARAM_SIZE-strlen(overview_buff));
offset += 4;
}
proto_item_set_text(ti,
"%s: %s",
label,
overview_buff);
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,
int 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[40];
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 */
memset(indent_string, ' ', 40);
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_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_string(tvb, offset+4, discriminator_enum_name_length);
}
offset = disc_offset_begin + disc_size;
/*
field_offset_begin = offset;
offset += rtps_util_add_typecode(
tree,
tvb, next_offset = offset;
offset,
little_endian,
indent_level+1,
0,
0,
0,
field_offset_begin,
member_name,
-1,
NULL,
ndds_40_hack);
*/
/* 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);
g_free(struct_name);
break;
}
g_free(struct_name);
/* - - - - - - - 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_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);
g_free(member_name);
}
/* 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_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);
g_free(struct_name);
break;
}
/* Prints it */
proto_tree_add_text(tree,
tvb,
original_offset,
retVal,
"%s%s %s {",
indent_string,
typecode_name,
struct_name);
g_free(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_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);
}
g_free(member_name);
}
/* 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_len;
LONG_ALIGN(offset);
seq_max_len = 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_len,
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_string(tvb, offset, alias_name_length);
offset += alias_name_length;
g_strlcpy(type_name, alias_name, 40);
g_free(alias_name);
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_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 */
char dim_str[40];
dim_str[0] = '\0';
for (i = 0; i < MAX_ARRAY_DIMENSION; ++i) {
if (arr_dimension[i] != 0) {
g_snprintf(dim_str+strlen(dim_str),
40-strlen(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,
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.
*/
static void rtps_util_add_seq_octets(proto_tree *tree,
tvbuff_t * tvb,
gint offset,
int little_endian,
int param_length,
int hf_id,
guint8 * buffer,
gint buffer_size) {
gint idx = 0;
guint32 seq_length;
guint32 i;
gint original_offset = offset;
guint32 original_seq_length;
original_seq_length = seq_length = NEXT_guint32(tvb, offset, little_endian);
offset += 4;
if (param_length < 4 + (int)seq_length) {
g_strlcpy(buffer,
"RTPS PROTOCOL ERROR: parameter value too small",
buffer_size);
proto_tree_add_text(tree,
tvb,
offset,
param_length, "%s",
buffer);
return ;
}
/* Limit the number of octects displayed to MAX_SEQ_OCTETS_PRINTED */
if (seq_length > MAX_SEQ_OCTETS_PRINTED) {
seq_length = MAX_SEQ_OCTETS_PRINTED;
}
for (i = 0; i < seq_length; ++i) {
idx += g_snprintf(&buffer[idx],
buffer_size - idx - 1,
"%02x",
tvb_get_guint8(tvb, offset++));
if (idx >= buffer_size) {
break;
}
}
if (seq_length != original_seq_length) {
/* seq_length was reduced, add '...' */
g_strlcat(buffer, "...", buffer_size);
}
if (tree != NULL) {
proto_tree_add_text(tree,
tvb,
original_offset,
4,
"sequenceSize: %d octects",
original_seq_length);
proto_tree_add_item(tree,
hf_id,
tvb,
original_offset+4,
original_seq_length,
little_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,
int 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; 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 = 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) { \
proto_tree_add_text(rtps_parameter_tree, \
tvb, offset, param_length, \
"RTPS PROTOCOL ERROR: parameter value too small"\
" (must be at least %d octects)", size); \
break; \
}
static gint dissect_parameter_sequence(proto_tree *tree,
tvbuff_t *tvb,
gint offset,
int little_endian,
int octects_to_next_header,
const char * label) {
proto_item * ti;
proto_tree * rtps_parameter_sequence_tree;
proto_tree * rtps_parameter_tree;
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) {
proto_tree_add_text(tree,
tvb,
offset,
1,
"RTPS PROTOCOL 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);
ti = 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(ti, ett_rtps_parameter);
proto_tree_add_uint_format(rtps_parameter_tree,
hf_rtps_parameter_id,
tvb,
offset,
2,
parameter,
"parameterId: 0x%04x (%s)",
parameter,
val_to_str(parameter, parameter_id_vals,
"unknown %04x"));
offset += 2;
/* parameter length */
param_length = NEXT_guint16(tvb, offset, little_endian);
proto_tree_add_item(rtps_parameter_tree,
hf_rtps_parameter_length,
tvb,
offset,
2,
little_endian);
offset += 2;
/* Make sure we have enough bytes for the param value */
if ((max_param_section-offset < param_length) &&
(parameter != PID_SENTINEL)) {
proto_tree_add_text(tree,
tvb,
offset,
1,
"RTPS PROTOCOL ERROR: not enough bytes to read "
" the parameter value");
return 0;
}
/* Sets the end of this item (now we know it!) */
proto_item_set_len(ti, 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,
"duration",
buffer,
MAX_PARAM_SIZE);
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,
"minimum_separation",
buffer,
MAX_PARAM_SIZE);
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);
rtps_util_add_long(rtps_parameter_tree,
tvb,
offset,
hf_rtps_param_strength,
little_endian,
FALSE, /* Is Hex ? */
TRUE, /* Is Signed ? */
NULL, /* No Label, use the protocol item ID */
buffer,
MAX_PARAM_SIZE);
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,
tvb,
offset,
little_endian,
"port",
buffer,
MAX_PARAM_SIZE);
break;
/* 0...2...........7...............15.............23...............31
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | PID_DEFAULT_EXPECTS_INLINE_QOS| 0x0004 |
* +---------------+---------------+---------------+---------------+
* | boolean | N O T U S E D |
* +---------------+---------------+---------------+---------------+
*/
case PID_DEFAULT_EXPECTS_INLINE_QOS:
ENSURE_LENGTH(1);
rtps_util_add_boolean(rtps_parameter_tree,
tvb,
offset,
"inline_qos",
buffer,
MAX_PARAM_SIZE);
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,
tvb,
offset,
little_endian,
"address",
buffer,
MAX_PARAM_SIZE);
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: {
guint8 major = 0;
guint8 minor = 0;
ENSURE_LENGTH(2);
major = tvb_get_guint8(tvb, offset);
minor = tvb_get_guint8(tvb, offset+1);
g_snprintf(buffer, MAX_PARAM_SIZE, "%d.%d", major, minor);
proto_tree_add_text(rtps_parameter_tree,
tvb,
offset,
param_length,
"protocolVersion: %s",
buffer);
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,
buffer,
MAX_PARAM_SIZE);
proto_tree_add_text(rtps_parameter_tree,
tvb,
offset,
2,
"vendorId: %s",
buffer);
break;
/* 0...2...........7...............15.............23...............31
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | PID_RELIABILITY | 0x0004 |
* +---------------+---------------+---------------+---------------+
* | unsigned long kind |
* +---------------+---------------+---------------+---------------+
*/
case PID_RELIABILITY_OFFERED: /* Deprecated */
case PID_RELIABILITY:
ENSURE_LENGTH(4);
rtps_util_add_kind_qos(rtps_parameter_tree,
tvb,
offset,
little_endian,
"kind",
reliability_qos_vals,
buffer,
MAX_PARAM_SIZE);
/* 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,
"maxBlockingTime",
NULL,
0);
}
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,
buffer,
MAX_PARAM_SIZE);
break;
/* 0...2...........7...............15.............23...............31
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | PID_DURABILITY | 0x0004 |
* +---------------+---------------+---------------+---------------+
* | unsigned long kind |
* +---------------+---------------+---------------+---------------+
*/
case PID_DURABILITY:
ENSURE_LENGTH(4);
rtps_util_add_kind_qos(rtps_parameter_tree,
tvb,
offset,
little_endian,
"durability",
durability_qos_vals,
buffer,
MAX_PARAM_SIZE);
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,
buffer,
MAX_PARAM_SIZE);
break;
/* 0...2...........7...............15.............23...............31
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | PID_OWNERSHIP | 0x0004 |
* +---------------+---------------+---------------+---------------+
* | unsigned long kind |
* +---------------+---------------+---------------+---------------+
*/
case PID_OWNERSHIP_OFFERED: /* Deprecated */
case PID_OWNERSHIP:
ENSURE_LENGTH(4);
rtps_util_add_kind_qos(rtps_parameter_tree,
tvb,
offset,
little_endian,
"kind",
ownership_qos_vals,
buffer,
MAX_PARAM_SIZE);
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);
g_strlcpy(buffer, "{ ", MAX_PARAM_SIZE);
rtps_util_add_kind_qos(rtps_parameter_tree,
tvb,
offset,
little_endian,
"access_scope",
presentation_qos_vals,
buffer+strlen(buffer),
MAX_PARAM_SIZE-strlen(buffer));
g_strlcat(buffer, ", ", MAX_PARAM_SIZE);
rtps_util_add_boolean(rtps_parameter_tree,
tvb,
offset+4,
"coherent_access",
buffer+strlen(buffer),
MAX_PARAM_SIZE-strlen(buffer));
g_strlcat(buffer, ", ", MAX_PARAM_SIZE);
rtps_util_add_boolean(rtps_parameter_tree,
tvb,
offset+4,
"ordered_access",
buffer+strlen(buffer),
MAX_PARAM_SIZE-strlen(buffer));
g_strlcat(buffer, " }", MAX_PARAM_SIZE);
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,
"period",
buffer,
MAX_PARAM_SIZE);
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);
rtps_util_add_kind_qos(rtps_parameter_tree,
tvb,
offset,
little_endian,
"kind",
destination_order_qos_vals,
buffer,
MAX_PARAM_SIZE);
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,
"duration",
buffer,
MAX_PARAM_SIZE);
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,
"duration",
buffer,
MAX_PARAM_SIZE);
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,
tvb,
offset,
little_endian,
param_length,
hf_rtps_param_user_data,
buffer,
MAX_PARAM_SIZE);
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,
tvb,
offset,
little_endian,
param_length,
hf_rtps_param_group_data,
buffer,
MAX_PARAM_SIZE);
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,
tvb,
offset,
little_endian,
param_length,
hf_rtps_param_topic_data,
buffer,
MAX_PARAM_SIZE);
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,
tvb,
offset,
little_endian,
"locator",
buffer,
MAX_PARAM_SIZE);
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,
tvb,
offset,
little_endian,
"locator",
buffer,
MAX_PARAM_SIZE);
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,
tvb,
offset,
little_endian,
"locator",
buffer,
MAX_PARAM_SIZE);
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,
tvb,
offset,
little_endian,
"locator",
buffer,
MAX_PARAM_SIZE);
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,
tvb,
offset,
little_endian,
"locator",
buffer,
MAX_PARAM_SIZE);
break;
/* 0...2...........7...............15.............23...............31
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | PID_PARTICIPANT_MANUAL_LIVE...| 0x0004 |
* +---------------+---------------+---------------+---------------+
* | long livelinessEpoch |
* +---------------+---------------+---------------+---------------+
*/
case PID_PARTICIPANT_BUILTIN_ENDPOINTS:
case PID_PARTICIPANT_MANUAL_LIVELINESS_COUNT:
ENSURE_LENGTH(4);
rtps_util_add_long(rtps_parameter_tree,
tvb,
offset,
-1, /* No protocol ID, use label below */
little_endian,
TRUE, /* Is Hex ? */
FALSE, /* Is Signed ? */
"value",
buffer,
MAX_PARAM_SIZE);
break;
/* 0...2...........7...............15.............23...............31
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | PID_HISTORY | 0x0004 |
* +---------------+---------------+---------------+---------------+
* | long kind |
* +---------------+---------------+---------------+---------------+
* | long depth |
* +---------------+---------------+---------------+---------------+
*/
case PID_HISTORY:
ENSURE_LENGTH(8);
g_strlcpy(buffer, "{ ", MAX_PARAM_SIZE);
rtps_util_add_kind_qos(rtps_parameter_tree,
tvb,
offset,
little_endian,
"kind",
history_qos_vals,
buffer+strlen(buffer),
MAX_PARAM_SIZE-strlen(buffer));
g_strlcat(buffer, ", ", MAX_PARAM_SIZE);
rtps_util_add_long(rtps_parameter_tree,
tvb,
offset+4,
-1, /* No protocol ID, use label below */
little_endian,
FALSE, /* Is Hex ? */
TRUE, /* Is Signed ? */
"depth",
buffer + strlen(buffer),
MAX_PARAM_SIZE-strlen(buffer));
g_strlcat(buffer, " }", MAX_PARAM_SIZE);
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);
g_strlcpy(buffer, "{ ", MAX_PARAM_SIZE);
rtps_util_add_long(rtps_parameter_tree,
tvb,
offset,
-1, /* No protocol ID, use label below */
little_endian,
FALSE, /* Is Hex ? */
TRUE, /* Is Signed ? */
"max_samples",
buffer + strlen(buffer),
MAX_PARAM_SIZE-strlen(buffer));
g_strlcat(buffer, ", ", MAX_PARAM_SIZE);
rtps_util_add_long(rtps_parameter_tree,
tvb,
offset+4,
-1, /* No protocol ID, use label below */
little_endian,
FALSE, /* Is Hex ? */
TRUE, /* Is Signed ? */
"max_instances",
buffer + strlen(buffer),
MAX_PARAM_SIZE-strlen(buffer));
g_strlcat(buffer, ", ", MAX_PARAM_SIZE);
rtps_util_add_long(rtps_parameter_tree,
tvb,
offset+8,
-1, /* No protocol ID, use label below */
little_endian,
FALSE, /* Is Hex ? */
TRUE, /* Is Signed ? */
"max_samples_per_instances",
buffer + strlen(buffer),
MAX_PARAM_SIZE-strlen(buffer));
g_strlcat(buffer, " }", MAX_PARAM_SIZE);
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:
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,
little_endian,
param_length,
TRUE, /* is_hex */
FALSE, /* filterSignature: is_signed */
"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,
"persistence",
buffer,
MAX_PARAM_SIZE);
break;
case PID_TYPE_CHECKSUM:
ENSURE_LENGTH(4);
rtps_util_add_long(rtps_parameter_tree,
tvb,
offset,
-1,
little_endian,
TRUE, /* Is Hex? */
FALSE, /* Is signed ? */
"checksum",
buffer,
MAX_PARAM_SIZE);
break;
case PID_EXPECTS_ACK:
ENSURE_LENGTH(1);
rtps_util_add_boolean(rtps_parameter_tree,
tvb,
offset,
"expectsAck",
buffer,
MAX_PARAM_SIZE);
break;
case PID_MANAGER_KEY: {
int i = 0;
char sep = ':';
guint32 manager_key;
buffer[0] = '\0';
while (param_length >= 4) {
manager_key = NEXT_guint32(tvb, offset, little_endian);
g_snprintf(buffer+strlen(buffer),
MAX_PARAM_SIZE-strlen(buffer),
"%c 0x%08x",
sep,
manager_key);
proto_tree_add_text(rtps_parameter_tree,
tvb,
offset,
param_length,
"Key[%d]: 0x%X", i, manager_key);
++i;
offset +=4;
sep = ',';
param_length -= 4; /* decrement count */
}
offset += param_length;
break;
}
case PID_RECV_QUEUE_SIZE:
case PID_SEND_QUEUE_SIZE:
ENSURE_LENGTH(4);
rtps_util_add_long(rtps_parameter_tree,
tvb,
offset,
-1,
little_endian,
TRUE, /* Is Hex? */
FALSE, /* Is signed ? */
"queueSize",
buffer,
MAX_PARAM_SIZE);
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(ti, ": %s", buffer);
buffer[0] = '\0';
}
offset += param_length;
} while(parameter != PID_SENTINEL); /* for all the parameters */
return offset;
}
#undef ENSURE_LENGTH
/* *********************************************************************** */
/* * P A D * */
/* *********************************************************************** */
static void dissect_PAD(tvbuff_t *tvb,
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 |
* +---------------+---------------+---------------+---------------+
*/
rtps_util_decode_flags(tree, tvb, offset + 1, flags, PAD_FLAGS);
if (octects_to_next_header != 0) {
proto_tree_add_uint_format(tree,
hf_rtps_sm_octets_to_next_header,
tvb,
offset + 2,
2,
octects_to_next_header,
"octectsToNextHeader: %u (Error: should be ZERO)",
octects_to_next_header);
return;
}
proto_tree_add_item(tree,
hf_rtps_sm_octets_to_next_header,
tvb,
offset + 2,
2,
little_endian);
}
/* *********************************************************************** */
/* * D A T A * */
/* *********************************************************************** */
static void dissect_DATA(tvbuff_t *tvb,
gint offset,
guint8 flags,
gboolean little_endian,
int octects_to_next_header,
proto_tree *tree,
const char ** sm_data) { /* 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 */
rtps_util_decode_flags(tree, tvb, offset + 1, flags, DATA_FLAGS);
/* 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 (octects_to_next_header < min_len) {
proto_tree_add_uint_format(tree,
hf_rtps_sm_octets_to_next_header,
tvb,
offset+2,
2,
octects_to_next_header,
"octectsToNextHeader: %u (Error: should be >= %u)",
octects_to_next_header,
min_len);
return;
}
proto_tree_add_item(tree,
hf_rtps_sm_octets_to_next_header,
tvb,
offset + 2,
2,
little_endian);
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) {
*sm_data = SM_EXTRA_WPLUS;
} else if (wid == ENTITYID_BUILTIN_PUBLICATIONS_WRITER && (flags & FLAG_DATA_A) == 0) {
*sm_data = SM_EXTRA_WMINUS;
} else if (wid == ENTITYID_BUILTIN_SUBSCRIPTIONS_WRITER && (flags & FLAG_DATA_A) != 0) {
*sm_data = SM_EXTRA_RPLUS;
} else if (wid == ENTITYID_BUILTIN_SUBSCRIPTIONS_WRITER && (flags & FLAG_DATA_A) == 0) {
*sm_data = SM_EXTRA_RMINUS;
} else if (wid == ENTITYID_BUILTIN_SDP_PARTICIPANT_WRITER && (flags & FLAG_DATA_A) != 0) {
*sm_data = SM_EXTRA_PPLUS;
} else if (wid == ENTITYID_BUILTIN_SDP_PARTICIPANT_WRITER && (flags & FLAG_DATA_A) == 0) {
*sm_data = SM_EXTRA_PMINUS;
} else if (wid == ENTITYID_BUILTIN_TOPIC_WRITER && (flags & FLAG_DATA_A) != 0) {
*sm_data = SM_EXTRA_TPLUS;
} else if (wid == ENTITYID_BUILTIN_TOPIC_WRITER && (flags & FLAG_DATA_A) == 0) {
*sm_data = 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",
NULL,
0);
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,
tvb,
offset,
little_endian,
octects_to_next_header,
"inlineQos");
}
/* SerializedData */
if ((flags & FLAG_DATA_D) != 0) {
if (is_builtin_entity) {
offset = dissect_parameter_sequence(tree,
tvb,
offset,
little_endian,
octects_to_next_header,
"serializedData");
} else {
proto_tree_add_item(tree,
hf_rtps_issue_data,
tvb,
offset,
octects_to_next_header - (offset - old_offset) + 4,
little_endian);
}
}
}
/* *********************************************************************** */
/* * N O K E Y _ D A T A * */
/* *********************************************************************** */
static void dissect_NOKEY_DATA(tvbuff_t *tvb,
gint offset,
guint8 flags,
gboolean little_endian,
int octects_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;
rtps_util_decode_flags(tree, tvb, offset + 1, flags, NOKEY_DATA_FLAGS);
/* Calculates the minimum length for this submessage */
min_len = 16;
if ((flags & FLAG_NOKEY_DATA_Q) != 0) min_len += 4;
if (octects_to_next_header < min_len) {
proto_tree_add_uint_format(tree,
hf_rtps_sm_octets_to_next_header,
tvb,
offset+2,
2,
octects_to_next_header,
"octectsToNextHeader: %u (Error: should be >= %u)",
octects_to_next_header,
min_len);
return;
}
proto_tree_add_item(tree,
hf_rtps_sm_octets_to_next_header,
tvb,
offset + 2,
2,
little_endian);
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,
tvb,
offset,
little_endian,
octects_to_next_header,
"inlineQos");
}
/* Issue Data */
if ((flags & FLAG_NOKEY_DATA_D) == 0) {
proto_tree_add_item(tree,
hf_rtps_issue_data,
tvb,
offset,
octects_to_next_header - (offset - old_offset) + 4,
little_endian);
}
}
/* *********************************************************************** */
/* * A C K N A C K * */
/* *********************************************************************** */
static void dissect_ACKNACK(tvbuff_t *tvb,
gint offset,
guint8 flags,
gboolean little_endian,
int octects_to_next_header,
proto_tree *tree) {
/* 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 */
rtps_util_decode_flags(tree, tvb, offset + 1, flags, ACKNACK_FLAGS);
if (octects_to_next_header < 20) {
proto_tree_add_uint_format(tree,
hf_rtps_sm_octets_to_next_header,
tvb,
offset + 2,
2,
octects_to_next_header,
"octectsToNextHeader: %u (Error: should be >= 20)",
octects_to_next_header);
return;
}
proto_tree_add_item(tree,
hf_rtps_sm_octets_to_next_header,
tvb,
offset + 2,
2,
little_endian);
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 + octects_to_next_header) {
/* Count is present */
rtps_util_add_long(tree,
tvb,
offset,
-1,
little_endian,
FALSE, /* Is Hex ? */
TRUE, /* Is Signed ? */
"counter", /* No Label, use the protocol item ID */
NULL,
0);
} else if (offset < original_offset + octects_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
*/
proto_tree_add_text(tree,
tvb,
offset,
octects_to_next_header - offset,
"Packet malformed: don't know how to decode those "
"extra bytes: %d",
octects_to_next_header - offset);
} else if (offset > original_offset + octects_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.
*/
proto_tree_add_text(tree,
tvb,
original_offset,
octects_to_next_header + original_offset,
"Packet malformed: not enough bytes to decode");
}
}
/* *********************************************************************** */
/* * H E A R T B E A T * */
/* *********************************************************************** */
static void dissect_HEARTBEAT(tvbuff_t *tvb,
gint offset,
guint8 flags,
gboolean little_endian,
int octects_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;
rtps_util_decode_flags(tree, tvb, offset + 1, flags, HEARTBEAT_FLAGS);
if (octects_to_next_header < 24) {
proto_tree_add_uint_format(tree,
hf_rtps_sm_octets_to_next_header,
tvb,
offset+2,
2,
octects_to_next_header,
"octectsToNextHeader: %u (Error: should be >= 24)",
octects_to_next_header);
return;
}
proto_tree_add_item(tree,
hf_rtps_sm_octets_to_next_header,
tvb,
offset + 2,
2,
little_endian);
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 (octects_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,
gint offset,
guint8 flags,
gboolean little_endian,
int octects_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 ~
* | |
* +---------------+---------------+---------------+---------------+
*/
rtps_util_decode_flags(tree, tvb, offset + 1, flags, GAP_FLAGS);
if (octects_to_next_header < 24) {
proto_tree_add_uint_format(tree,
hf_rtps_sm_octets_to_next_header,
tvb,
offset + 2,
2,
octects_to_next_header,
"octectsToNextHeader: %u (Error: should be >= 24)",
octects_to_next_header);
return;
}
proto_tree_add_item(tree,
hf_rtps_sm_octets_to_next_header,
tvb,
offset + 2,
2,
little_endian);
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 * */
/* *********************************************************************** */
static void dissect_INFO_TS(tvbuff_t *tvb,
gint offset,
guint8 flags,
gboolean little_endian,
int octects_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;
rtps_util_decode_flags(tree, tvb, offset + 1, flags, INFO_TS_FLAGS);
min_len = 0;
if ((flags & FLAG_INFO_TS_T) == 0) min_len += 8;
if (octects_to_next_header != min_len) {
proto_tree_add_uint_format(tree,
hf_rtps_sm_octets_to_next_header,
tvb,
offset+2,
2,
octects_to_next_header,
"octectsToNextHeader: %u (Error: should be == %u)",
octects_to_next_header,
min_len);
return;
}
proto_tree_add_item(tree,
hf_rtps_sm_octets_to_next_header,
tvb,
offset + 2,
2,
little_endian);
offset += 4;
if ((flags & FLAG_INFO_TS_T) == 0) {
rtps_util_add_ntp_time(tree,
tvb,
offset,
little_endian,
"timestamp",
NULL,
0);
}
}
/* *********************************************************************** */
/* * I N F O _ S R C * */
/* *********************************************************************** */
static void dissect_INFO_SRC(tvbuff_t *tvb,
gint offset,
guint8 flags,
gboolean little_endian,
int octects_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 +
* | |
* +---------------+---------------+---------------+---------------+
*/
rtps_util_decode_flags(tree, tvb, offset + 1, flags, INFO_SRC_FLAGS);
if (octects_to_next_header != 16) {
proto_tree_add_uint_format(tree,
hf_rtps_sm_octets_to_next_header,
tvb,
offset+2,
2,
octects_to_next_header,
"octectsToNextHeader: %u (Error: should be == 16)",
octects_to_next_header);
return;
}
proto_tree_add_item(tree,
hf_rtps_sm_octets_to_next_header,
tvb,
offset + 2,
2,
little_endian);
offset += 4;
/* Ip Address */
{
guint32 ip = NEXT_guint32(tvb, offset, little_endian);
proto_tree_add_text(tree,
tvb,
offset,
4,
"unused: 0x%08x (appIpAddress: %d.%d.%d.%d)",
ip,
(ip >> 24) & 0xff,
(ip >> 16) & 0xff,
(ip >> 8) & 0xff,
ip & 0xff);
offset += 4;
}
/* Version */
{
guint8 major = 0;
guint8 minor = 0;
major = tvb_get_guint8(tvb, offset);
minor = tvb_get_guint8(tvb, offset+1);
proto_tree_add_text(tree,
tvb,
offset,
2,
"version: %d.%d",
major,
minor);
offset += 2;
}
/* Vendor ID */
{
guint8 vendor[MAX_VENDOR_ID_SIZE];
rtps_util_add_vendor_id(NULL,
tvb,
offset,
vendor,
MAX_VENDOR_ID_SIZE);
proto_tree_add_text(tree,
tvb,
offset,
2,
"vendor: %s",
vendor);
offset += 2;
}
{
/* guint8 temp_buffer[MAX_GUID_PREFIX_SIZE]; */
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' */
NULL,
0);
/*
&temp_buffer[0],
MAX_GUID_PREFIX_SIZE);
proto_tree_add_text(tree,
tvb,
offset,
8,
temp_buffer);
*/
}
}
/* *********************************************************************** */
/* * I N F O _ R E P L Y _ I P 4 * */
/* *********************************************************************** */
static void dissect_INFO_REPLY_IP4(tvbuff_t *tvb,
gint offset,
guint8 flags,
gboolean little_endian,
int octects_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;
rtps_util_decode_flags(tree, tvb, offset + 1, flags, INFO_REPLY_IP4_FLAGS);
min_len = 8;
if ((flags & FLAG_INFO_REPLY_IP4_M) == 1) min_len += 8;
if (octects_to_next_header != min_len) {
proto_tree_add_uint_format(tree,
hf_rtps_sm_octets_to_next_header,
tvb,
offset+2,
2,
octects_to_next_header,
"octectsToNextHeader: %u (Error: should be == %u)",
octects_to_next_header,
min_len);
return;
}
proto_tree_add_item(tree,
hf_rtps_sm_octets_to_next_header,
tvb,
offset + 2,
2,
little_endian);
offset += 4;
/* unicastReplyLocator */
rtps_util_add_locator_udp_v4(tree,
tvb,
offset,
"unicastReplyLocator",
little_endian);
offset += 8;
/* multicastReplyLocator */
if ((flags & FLAG_INFO_REPLY_IP4_M) == 1) {
rtps_util_add_locator_udp_v4(tree,
tvb,
offset,
"multicastReplyLocator",
little_endian);
offset += 8;
}
}
/* *********************************************************************** */
/* * I N F O _ D S T * */
/* *********************************************************************** */
static void dissect_INFO_DST(tvbuff_t *tvb,
gint offset,
guint8 flags,
gboolean little_endian,
int octects_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 +
* | |
* +---------------+---------------+---------------+---------------+
*/
rtps_util_decode_flags(tree, tvb, offset + 1, flags, INFO_DST_FLAGS);
if (octects_to_next_header != 8) {
proto_tree_add_uint_format(tree,
hf_rtps_sm_octets_to_next_header,
tvb,
offset+2,
2,
octects_to_next_header,
"octectsToNextHeader: %u (Error: should be == 8)",
octects_to_next_header);
return;
}
proto_tree_add_item(tree,
hf_rtps_sm_octets_to_next_header,
tvb,
offset + 2,
2,
little_endian);
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,
NULL,
0);
}
}
/* *********************************************************************** */
/* * I N F O _ R E P L Y * */
/* *********************************************************************** */
static void dissect_INFO_REPLY(tvbuff_t *tvb,
gint offset,
guint8 flags,
gboolean little_endian,
int octects_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;
rtps_util_decode_flags(tree, tvb, offset + 1, flags, INFO_REPLY_FLAGS);
min_len = 8;
if ((flags & FLAG_INFO_REPLY_M) == 1) min_len += 8;
if (octects_to_next_header != min_len) {
proto_tree_add_uint_format(tree,
hf_rtps_sm_octets_to_next_header,
tvb,
offset+2,
2,
octects_to_next_header,
"octectsToNextHeader: %u (Error: should be == %u)",
octects_to_next_header,
min_len);
return;
}
proto_tree_add_item(tree,
hf_rtps_sm_octets_to_next_header,
tvb,
offset + 2,
2,
little_endian);
offset += 4;
/* unicastReplyLocatorList */
rtps_util_add_locator_list(tree,
tvb,
offset,
"unicastReplyLocatorList",
little_endian);
offset += 8;
/* multicastReplyLocatorList */
if ((flags & FLAG_INFO_REPLY_M) == 1) {
rtps_util_add_locator_list(tree,
tvb,
offset,
"multicastReplyLocatorList",
little_endian);
offset += 8;
}
}
/***************************************************************************/
/* The main packet dissector function
*/
static gboolean dissect_rtps(tvbuff_t *tvb,
packet_info *pinfo,
proto_tree *tree) {
proto_item *ti = NULL;
proto_tree *rtps_tree=NULL;
gint offset = 0;
proto_tree *rtps_submessage_tree;
guint8 submessageId;
guint8 flags;
gboolean little_endian;
gboolean is_ping = FALSE;
gint next_submsg, octects_to_next_header;
struct SMCounterRecord *smcr_head = NULL;
struct SMCounterRecord *smcr_last = NULL;
const gboolean is_tcp = (pinfo->ptype == PT_TCP);
const char * sm_extra = NULL;
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_guint8(tvb,offset) != 'R') return FALSE;
if (tvb_get_guint8(tvb,offset+1) != 'T') return FALSE;
if (tvb_get_guint8(tvb,offset+2) != 'P') return FALSE;
if (tvb_get_guint8(tvb,offset+3) != 'S') return FALSE;
/* Distinguish between RTPS 1.x and 2.x here */
if (tvb_get_guint8(tvb,offset+4) != 1) return FALSE;
/* --- Make entries in Protocol column ---*/
if (check_col(pinfo->cinfo, COL_PROTOCOL)) {
col_set_str(pinfo->cinfo, COL_PROTOCOL, "RTPS");
}
if (check_col(pinfo->cinfo, COL_INFO)) {
col_clear(pinfo->cinfo, COL_INFO);
}
if (tree) {
guint8 nddsPing[8];
/* create display subtree for the protocol */
ti = proto_tree_add_item(tree, proto_rtps, tvb, 0, -1, FALSE);
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, NULL, 0);
tvb_memcpy(tvb, nddsPing, offset+8, 8);
if (nddsPing[0] == 'N' &&
nddsPing[1] == 'D' &&
nddsPing[2] == 'D' &&
nddsPing[3] == 'S' &&
nddsPing[4] == 'P' &&
nddsPing[5] == 'I' &&
nddsPing[6] == 'N' &&
nddsPing[7] == 'G') {
is_ping = TRUE;
}
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,
NULL,
0);
}
}
/* Extract the domain id and participant index */
{
int domain_id;
int participant_idx;
int nature;
proto_item *ti;
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,
4,
"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);
proto_tree_add_uint(mapping_tree,
hf_rtps_domain_id,
tvb,
0,
4,
domain_id);
proto_tree_add_uint(mapping_tree,
hf_rtps_participant_idx,
tvb,
0,
4,
participant_idx);
proto_tree_add_uint(mapping_tree,
hf_rtps_nature_type,
tvb,
0,
4,
nature);
}
/* offset behind RTPS's Header (need to be set in case tree=NULL)*/
offset=16;
while (tvb_reported_length_remaining(tvb, offset) > 0) {
sm_extra = NULL;
submessageId = tvb_get_guint8(tvb, offset);
/* Creates the subtree 'Submessage: XXXX' */
if (submessageId & 0x80) {
ti = proto_tree_add_text(rtps_tree,
tvb,
offset,
-1,
"Submessage: %s",
val_to_str(submessageId, submessage_id_vals,
"Vendor-specific (0x%02x)"));
} else {
ti = proto_tree_add_text(rtps_tree,
tvb,
offset,
-1,
"Submessage: %s",
val_to_str(submessageId, submessage_id_vals,
"Unknown (0x%02x)"));
}
rtps_submessage_tree = proto_item_add_subtree(ti, ett_rtps_submessage);
/* Decode the submessage ID */
if (submessageId & 0x80) {
proto_tree_add_uint_format(rtps_submessage_tree,
hf_rtps_sm_id,
tvb,
offset,
1,
submessageId,
"submessageId: Vendor-specific (0x%02x)",
submessageId);
} else {
proto_tree_add_uint(rtps_submessage_tree, hf_rtps_sm_id,
tvb, offset, 1, submessageId);
}
/* 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:
if (tree) {
dissect_PAD(tvb,
offset,
flags,
little_endian,
octects_to_next_header,
rtps_submessage_tree);
}
break;
case DATA:
if (tree) {
dissect_DATA(tvb,
offset,
flags,
little_endian,
octects_to_next_header,
rtps_submessage_tree,
&sm_extra);
}
break;
case NOKEY_DATA:
if (tree) {
dissect_NOKEY_DATA(tvb,
offset,
flags,
little_endian,
octects_to_next_header,
rtps_submessage_tree);
}
break;
case ACKNACK:
if (tree) {
dissect_ACKNACK(tvb,
offset,
flags,
little_endian,
octects_to_next_header,
rtps_submessage_tree);
}
break;
case HEARTBEAT:
if (tree) {
dissect_HEARTBEAT(tvb,
offset,
flags,
little_endian,
octects_to_next_header,
rtps_submessage_tree);
}
break;
case GAP:
if (tree) {
dissect_GAP(tvb,
offset,
flags,
little_endian,
octects_to_next_header,
rtps_submessage_tree);
}
break;
case INFO_TS:
if (tree) {
dissect_INFO_TS(tvb,
offset,
flags,
little_endian,
octects_to_next_header,
rtps_submessage_tree);
}
break;
case INFO_SRC:
if (tree) {
dissect_INFO_SRC(tvb,
offset,
flags,
little_endian,
octects_to_next_header,
rtps_submessage_tree);
}
break;
case INFO_REPLY_IP4:
if (tree) {
dissect_INFO_REPLY_IP4(tvb,
offset,
flags,
little_endian,
octects_to_next_header,
rtps_submessage_tree);
}
break;
case INFO_DST:
if (tree) {
dissect_INFO_DST(tvb,
offset,
flags,
little_endian,
octects_to_next_header,
rtps_submessage_tree);
}
break;
case INFO_REPLY:
if (tree) {
dissect_INFO_REPLY(tvb,
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;
}
/* Record the submessage type in the counter record list */
smcr_last = sm_counter_add(smcr_last, submessageId, sm_extra);
if (smcr_head == NULL) {
smcr_head = smcr_last;
}
/* next submessage's offset */
offset = next_submsg;
}
/* Compose the content of the 'summary' column */
if ((pinfo != NULL) && (pinfo->cinfo != NULL) &&
(check_col(pinfo->cinfo, COL_INFO))) {
char info_buf[MAX_SUMMARY_SIZE];
int is_first = 1; /* Used to control the ', ' between submessages */
struct SMCounterRecord *smcr_ptr = smcr_head;
if (is_ping) {
g_strlcpy(info_buf, "PING", MAX_SUMMARY_SIZE);
} else {
info_buf[0] = '\0';
/* Counts of submessages - for Information Frame */
while (smcr_ptr != NULL) {
if (!is_first) {
g_strlcat(info_buf, ", ", MAX_SUMMARY_SIZE);
} else {
is_first = 0;
}
/*
if (smcr_ptr->counter > 1) {
g_snprintf(info_buf+strlen(info_buf),
MAX_SUMMARY_SIZE-strlen(info_buf),
"%s(%d)",
val_to_str(smcr_ptr->id,
submessage_id_vals,
"Unknown[%02x]"),
smcr_ptr->counter);
} else {
*/
g_snprintf(info_buf+strlen(info_buf),
MAX_SUMMARY_SIZE-strlen(info_buf),
"%s%s",
val_to_str(smcr_ptr->id,
submessage_id_vals,
"Unknown[%02x]"),
smcr_ptr->extra ? smcr_ptr->extra : "");
if (strlen(info_buf) > (MAX_SUMMARY_SIZE - 20)) {
g_snprintf(info_buf+strlen(info_buf),
MAX_SUMMARY_SIZE-strlen(info_buf),
"...");
break;
}
/*
}
*/
smcr_ptr = smcr_ptr->next;
}
}
col_add_str(pinfo->cinfo, COL_INFO, info_buf);
}
sm_counter_free(smcr_head);
/* If TCP there's an extra OOB byte at the end of the message */
/* TODO: What to do with it? */
return TRUE;
} /* dissect_rtps(...) */
/***************************************************************************
* Register the protocol with Wireshark
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*/
void proto_register_rtps(void) {
/* Definition of the protocol tree items:
* This section declares all the protocol items that are parsed in the
* dissectors.
* Structure of each element:
* {
* item_id, {
* name, // As appears in the GUI tree
* abbrev, // Referenced by filters (rtps.xxxx[.yyyy])
* type, // FT_BOOLEAN, FT_UINT8, ...
* display, // BASE_HEX | BASE_DEC | BASE_OCT or other meanings
* strings, // String table (for enums) or NULL
* bitmask, // only for bitfields
* blurb, // Complete description of this item
* HFILL
* }
* }
*/
static hf_register_info hf[] = {
/* Protocol Version (composed as major.minor) -------------------------- */
{ &hf_rtps_protocol_version, {
"version",
"rtps.version",
FT_NONE,
BASE_NONE,
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_BYTES,
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_BYTES,
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 }
},
/* 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 / NtpTime ------------------------------------------------- */
{ &hf_rtps_param_ntpt, {
"ntpTime",
"rtps.param.ntpTime",
FT_NONE,
BASE_NONE,
NULL,
0,
"Time using the NTP standard format",
HFILL }
},
{ &hf_rtps_param_ntpt_sec, {
"seconds",
"rtps.param.ntpTime.sec",
FT_INT32,
BASE_DEC,
NULL,
0,
"The 'second' component of a NTP time",
HFILL }
},
{ &hf_rtps_param_ntpt_fraction, {
"fraction",
"rtps.param.ntpTime.fraction",
FT_UINT32,
BASE_DEC,
NULL,
0,
"The 'fraction' component of a NTP time",
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_HEX,
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_HEX,
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_HEX,
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 }
},
/* Finally the raw issue data ------------------------------------------ */
{ &hf_rtps_issue_data, {
"serializedData",
"rtps.issueData",
FT_BYTES,
BASE_HEX,
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,
};
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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