nexmon – Rev 1
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/******************************************************************************
** Copyright (C) 2006-2007 ascolab GmbH. All Rights Reserved.
** Web: http://www.ascolab.com
**
** 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 file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
** Project: OpcUa Wireshark Plugin
**
** Description: Implementation of OpcUa built-in type parsers.
** This contains all the simple types and some complex types.
**
** Author: Gerhard Gappmeier <gerhard.gappmeier@ascolab.com>
******************************************************************************/
#include "config.h"
#include <epan/packet.h>
#include <epan/expert.h>
#include <epan/dissectors/packet-windows-common.h>
#include "opcua_simpletypes.h"
#include "opcua_hfindeces.h"
#include "opcua_statuscode.h"
#define DIAGNOSTICINFO_ENCODINGMASK_SYMBOLICID_FLAG 0x01
#define DIAGNOSTICINFO_ENCODINGMASK_NAMESPACE_FLAG 0x02
#define DIAGNOSTICINFO_ENCODINGMASK_LOCALIZEDTEXT_FLAG 0x04
#define DIAGNOSTICINFO_ENCODINGMASK_LOCALE_FLAG 0x08
#define DIAGNOSTICINFO_ENCODINGMASK_ADDITIONALINFO_FLAG 0x10
#define DIAGNOSTICINFO_ENCODINGMASK_INNERSTATUSCODE_FLAG 0x20
#define DIAGNOSTICINFO_ENCODINGMASK_INNERDIAGNOSTICINFO_FLAG 0x40
#define LOCALIZEDTEXT_ENCODINGBYTE_LOCALE 0x01
#define LOCALIZEDTEXT_ENCODINGBYTE_TEXT 0x02
#define NODEID_NAMESPACEURIFLAG 0x80
#define NODEID_SERVERINDEXFLAG 0x40
#define DATAVALUE_ENCODINGBYTE_VALUE 0x01
#define DATAVALUE_ENCODINGBYTE_STATUSCODE 0x02
#define DATAVALUE_ENCODINGBYTE_SOURCETIMESTAMP 0x04
#define DATAVALUE_ENCODINGBYTE_SERVERTIMESTAMP 0x08
#define DATAVALUE_ENCODINGBYTE_SOURCEPICOSECONDS 0x10
#define DATAVALUE_ENCODINGBYTE_SERVERPICOSECONDS 0x20
#define EXTOBJ_ENCODINGMASK_BINBODY_FLAG 0x01
#define EXTOBJ_ENCODINGMASK_XMLBODY_FLAG 0x02
#define STATUSCODE_STRUCTURECHANGED 0x8000
#define STATUSCODE_SEMANTICSCHANGED 0x4000
#define STATUSCODE_INFOTYPE_DATAVALUE 0x00000400
#define STATUSCODE_INFOBIT_OVERFLOW 0x0080
#define STATUSCODE_INFOBIT_HISTORIAN_PARTIAL 0x0004
#define STATUSCODE_INFOBIT_HISTORIAN_EXTRADATA 0x0008
#define STATUSCODE_INFOBIT_HISTORIAN_MULTIVALUE 0x0010
#define RETURNDIAGNOSTICS_SERVICELEVEL_SYMBOLICID 0x0001
#define RETURNDIAGNOSTICS_SERVICELEVEL_LOCALIZEDTEXT 0x0002
#define RETURNDIAGNOSTICS_SERVICELEVEL_ADDITIONALINFO 0x0004
#define RETURNDIAGNOSTICS_SERVICELEVEL_INNERSTATUSCODE 0x0008
#define RETURNDIAGNOSTICS_SERVICELEVEL_INNERDIAGNOSTICS 0x0010
#define RETURNDIAGNOSTICS_OPERATIONLEVEL_SYMBOLICID 0x0020
#define RETURNDIAGNOSTICS_OPERATIONLEVEL_LOCALIZEDTEXT 0x0040
#define RETURNDIAGNOSTICS_OPERATIONLEVEL_ADDITIONALINFO 0x0080
#define RETURNDIAGNOSTICS_OPERATIONLEVEL_INNERSTATUSCODE 0x0100
#define RETURNDIAGNOSTICS_OPERATIONLEVEL_INNERDIAGNOSTICS 0x0200
/* Chosen arbitrarily */
#define MAX_ARRAY_LEN 10000
static int hf_opcua_diag_mask = -1;
static int hf_opcua_diag_mask_symbolicflag = -1;
static int hf_opcua_diag_mask_namespaceflag = -1;
static int hf_opcua_diag_mask_localizedtextflag = -1;
static int hf_opcua_diag_mask_localeflag = -1;
static int hf_opcua_diag_mask_additionalinfoflag = -1;
static int hf_opcua_diag_mask_innerstatuscodeflag = -1;
static int hf_opcua_diag_mask_innerdiaginfoflag = -1;
static int hf_opcua_loctext_mask = -1;
static int hf_opcua_loctext_mask_localeflag = -1;
static int hf_opcua_loctext_mask_textflag = -1;
static int hf_opcua_datavalue_mask = -1;
static int hf_opcua_datavalue_mask_valueflag = -1;
static int hf_opcua_datavalue_mask_statuscodeflag = -1;
static int hf_opcua_datavalue_mask_sourcetimestampflag = -1;
static int hf_opcua_datavalue_mask_servertimestampflag = -1;
static int hf_opcua_datavalue_mask_sourcepicoseconds = -1;
static int hf_opcua_datavalue_mask_serverpicoseconds = -1;
static int hf_opcua_nodeid_encodingmask = -1;
static int hf_opcua_expandednodeid_mask = -1;
static int hf_opcua_expandednodeid_mask_namespaceuri = -1;
static int hf_opcua_expandednodeid_mask_serverindex = -1;
static int hf_opcua_variant_encodingmask = -1;
static int hf_opcua_nodeid_nsindex = -1;
static int hf_opcua_nodeid_numeric = -1;
static int hf_opcua_nodeid_string = -1;
static int hf_opcua_nodeid_guid = -1;
static int hf_opcua_nodeid_bytestring = -1;
static int hf_opcua_localizedtext_locale = -1;
static int hf_opcua_localizedtext_text = -1;
static int hf_opcua_qualifiedname_id = -1;
static int hf_opcua_qualifiedname_name = -1;
static int hf_opcua_SourceTimestamp = -1;
static int hf_opcua_SourcePicoseconds = -1;
static int hf_opcua_ServerTimestamp = -1;
static int hf_opcua_ServerPicoseconds = -1;
static int hf_opcua_diag_symbolicid = -1;
static int hf_opcua_diag_namespace = -1;
static int hf_opcua_diag_localizedtext = -1;
static int hf_opcua_diag_locale = -1;
static int hf_opcua_diag_additionalinfo = -1;
static int hf_opcua_diag_innerstatuscode = -1;
static int hf_opcua_extobj_mask = -1;
static int hf_opcua_extobj_mask_binbodyflag = -1;
static int hf_opcua_extobj_mask_xmlbodyflag = -1;
static int hf_opcua_ArraySize = -1;
static int hf_opcua_ServerIndex = -1;
static int hf_opcua_status_StructureChanged = -1;
static int hf_opcua_status_SemanticsChanged = -1;
static int hf_opcua_status_InfoBit_Limit_Overflow = -1;
static int hf_opcua_status_InfoBit_Historian_Partial = -1;
static int hf_opcua_status_InfoBit_Historian_ExtraData = -1;
static int hf_opcua_status_InfoBit_Historian_MultiValue = -1;
static int hf_opcua_status_InfoType = -1;
static int hf_opcua_status_Limit = -1;
static int hf_opcua_status_Historian = -1;
int hf_opcua_returnDiag = -1;
int hf_opcua_returnDiag_mask_sl_symbolicId = -1;
int hf_opcua_returnDiag_mask_sl_localizedText = -1;
int hf_opcua_returnDiag_mask_sl_additionalinfo = -1;
int hf_opcua_returnDiag_mask_sl_innerstatuscode = -1;
int hf_opcua_returnDiag_mask_sl_innerdiagnostics = -1;
int hf_opcua_returnDiag_mask_ol_symbolicId = -1;
int hf_opcua_returnDiag_mask_ol_localizedText = -1;
int hf_opcua_returnDiag_mask_ol_additionalinfo = -1;
int hf_opcua_returnDiag_mask_ol_innerstatuscode = -1;
int hf_opcua_returnDiag_mask_ol_innerdiagnostics = -1;
static expert_field ei_array_length = EI_INIT;
/** NodeId encoding mask table */
static const value_string g_nodeidmasks[] = {
{ 0x00, "Two byte encoded Numeric" },
{ 0x01, "Four byte encoded Numeric" },
{ 0x02, "Numeric of arbitrary length" },
{ 0x03, "String" },
{ 0x04, "GUID" },
{ 0x05, "Opaque" },
{ 0, NULL }
};
/** StatusCode info types */
static const value_string g_infotype[] = {
{ 0x00, "Not used" },
{ 0x01, "DataValue" },
{ 0x02, "Reserved" },
{ 0x03, "Reserved" },
{ 0, NULL }
};
/** StatusCode Limit types */
static const value_string g_limit[] = {
{ 0x00, "None" },
{ 0x01, "Low" },
{ 0x02, "High" },
{ 0x03, "Constant" },
{ 0, NULL }
};
/** StatusCode Historian types */
static const value_string g_historian[] = {
{ 0x00, "Raw" },
{ 0x01, "Calculated" },
{ 0x02, "Interpolated" },
{ 0x03, "Reserved" },
{ 0, NULL }
};
/** UA Variant Type enum */
typedef enum _OpcUa_BuiltInType
{
OpcUaType_Null = 0,
OpcUaType_Boolean = 1,
OpcUaType_SByte = 2,
OpcUaType_Byte = 3,
OpcUaType_Int16 = 4,
OpcUaType_UInt16 = 5,
OpcUaType_Int32 = 6,
OpcUaType_UInt32 = 7,
OpcUaType_Int64 = 8,
OpcUaType_UInt64 = 9,
OpcUaType_Float = 10,
OpcUaType_Double = 11,
OpcUaType_String = 12,
OpcUaType_DateTime = 13,
OpcUaType_Guid = 14,
OpcUaType_ByteString = 15,
OpcUaType_XmlElement = 16,
OpcUaType_NodeId = 17,
OpcUaType_ExpandedNodeId = 18,
OpcUaType_StatusCode = 19,
OpcUaType_QualifiedName = 20,
OpcUaType_LocalizedText = 21,
OpcUaType_ExtensionObject = 22,
OpcUaType_DataValue = 23,
OpcUaType_Variant = 24,
OpcUaType_DiagnosticInfo = 25
}
OpcUa_BuiltInType;
/** Variant encoding mask table */
static const value_string g_VariantTypes[] = {
{ 0, "Null" },
{ 1, "Boolean" },
{ 2, "SByte" },
{ 3, "Byte" },
{ 4, "Int16" },
{ 5, "UInt16" },
{ 6, "Int32" },
{ 7, "UInt32" },
{ 8, "Int64" },
{ 9, "UInt64" },
{ 10, "Float" },
{ 11, "Double" },
{ 12, "String" },
{ 13, "DateTime" },
{ 14, "Guid" },
{ 15, "ByteString" },
{ 16, "XmlElement" },
{ 17, "NodeId" },
{ 18, "ExpandedNodeId" },
{ 19, "StatusCode" },
{ 20, "QualifiedName" },
{ 21, "LocalizedText" },
{ 22, "ExtensionObject" },
{ 23, "DataValue" },
{ 24, "Variant" },
{ 25, "DiagnosticInfo" },
{ 0x80, "Array of Null" },
{ 0x80+1, "Array of Boolean" },
{ 0x80+2, "Array of SByte" },
{ 0x80+3, "Array of Byte" },
{ 0x80+4, "Array of Int16" },
{ 0x80+5, "Array of UInt16" },
{ 0x80+6, "Array of Int32" },
{ 0x80+7, "Array of UInt32" },
{ 0x80+8, "Array of Int64" },
{ 0x80+9, "Array of UInt64" },
{ 0x80+10, "Array of Float" },
{ 0x80+11, "Array of Double" },
{ 0x80+12, "Array of String" },
{ 0x80+13, "Array of DateTime" },
{ 0x80+14, "Array of Guid" },
{ 0x80+15, "Array of ByteString" },
{ 0x80+16, "Array of XmlElement" },
{ 0x80+17, "Array of NodeId" },
{ 0x80+18, "Array of ExpandedNodeId" },
{ 0x80+19, "Array of StatusCode" },
{ 0x80+20, "Array of QualifiedName" },
{ 0x80+21, "Array of LocalizedText" },
{ 0x80+22, "Array of ExtensionObject" },
{ 0x80+23, "Array of DataValue" },
{ 0x80+24, "Array of Variant" },
{ 0x80+25, "Array of DiagnosticInfo" },
{ 0xC0, "Matrix of Null" },
{ 0xC0+1, "Matrix of Boolean" },
{ 0xC0+2, "Matrix of SByte" },
{ 0xC0+3, "Matrix of Byte" },
{ 0xC0+4, "Matrix of Int16" },
{ 0xC0+5, "Matrix of UInt16" },
{ 0xC0+6, "Matrix of Int32" },
{ 0xC0+7, "Matrix of UInt32" },
{ 0xC0+8, "Matrix of Int64" },
{ 0xC0+9, "Matrix of UInt64" },
{ 0xC0+10, "Matrix of Float" },
{ 0xC0+11, "Matrix of Double" },
{ 0xC0+12, "Matrix of String" },
{ 0xC0+13, "Matrix of DateTime" },
{ 0xC0+14, "Matrix of Guid" },
{ 0xC0+15, "Matrix of ByteString" },
{ 0xC0+16, "Matrix of XmlElement" },
{ 0xC0+17, "Matrix of NodeId" },
{ 0xC0+18, "Matrix of ExpandedNodeId" },
{ 0xC0+19, "Matrix of StatusCode" },
{ 0xC0+20, "Matrix of QualifiedName" },
{ 0xC0+21, "Matrix of LocalizedText" },
{ 0xC0+22, "Matrix of ExtensionObject" },
{ 0xC0+23, "Matrix of DataValue" },
{ 0xC0+24, "Matrix of Variant" },
{ 0xC0+25, "Matrix of DiagnosticInfo" },
{ 0, NULL }
};
#define VARIANT_ARRAYDIMENSIONS 0x40
#define VARIANT_ARRAYMASK 0x80
/* trees */
static gint ett_opcua_diagnosticinfo = -1;
static gint ett_opcua_diagnosticinfo_encodingmask = -1;
static gint ett_opcua_nodeid = -1;
static gint ett_opcua_expandednodeid = -1;
static gint ett_opcua_expandednodeid_encodingmask = -1;
static gint ett_opcua_localizedtext = -1;
static gint ett_opcua_localizedtext_encodingmask = -1;
static gint ett_opcua_qualifiedname = -1;
static gint ett_opcua_datavalue = -1;
static gint ett_opcua_datavalue_encodingmask = -1;
static gint ett_opcua_variant = -1;
static gint ett_opcua_variant_arraydims = -1;
static gint ett_opcua_extensionobject = -1;
static gint ett_opcua_extensionobject_encodingmask = -1;
static gint ett_opcua_statuscode = -1;
static gint ett_opcua_statuscode_info = -1;
gint ett_opcua_array_Boolean = -1;
gint ett_opcua_array_SByte = -1;
gint ett_opcua_array_Byte = -1;
gint ett_opcua_array_Int16 = -1;
gint ett_opcua_array_UInt16 = -1;
gint ett_opcua_array_Int32 = -1;
gint ett_opcua_array_UInt32 = -1;
gint ett_opcua_array_Int64 = -1;
gint ett_opcua_array_UInt64 = -1;
gint ett_opcua_array_Float = -1;
gint ett_opcua_array_Double = -1;
gint ett_opcua_array_String = -1;
gint ett_opcua_array_DateTime = -1;
gint ett_opcua_array_Guid = -1;
gint ett_opcua_array_ByteString = -1;
gint ett_opcua_array_XmlElement = -1;
gint ett_opcua_array_NodeId = -1;
gint ett_opcua_array_ExpandedNodeId = -1;
gint ett_opcua_array_StatusCode = -1;
gint ett_opcua_array_DiagnosticInfo = -1;
gint ett_opcua_array_QualifiedName = -1;
gint ett_opcua_array_LocalizedText = -1;
gint ett_opcua_array_ExtensionObject = -1;
gint ett_opcua_array_DataValue = -1;
gint ett_opcua_array_Variant = -1;
gint ett_opcua_returnDiagnostics = -1;
static gint *ett[] =
{
&ett_opcua_diagnosticinfo,
&ett_opcua_diagnosticinfo_encodingmask,
&ett_opcua_nodeid,
&ett_opcua_expandednodeid,
&ett_opcua_expandednodeid_encodingmask,
&ett_opcua_localizedtext,
&ett_opcua_localizedtext_encodingmask,
&ett_opcua_qualifiedname,
&ett_opcua_datavalue,
&ett_opcua_datavalue_encodingmask,
&ett_opcua_variant,
&ett_opcua_variant_arraydims,
&ett_opcua_extensionobject,
&ett_opcua_extensionobject_encodingmask,
&ett_opcua_statuscode,
&ett_opcua_statuscode_info,
&ett_opcua_array_Boolean,
&ett_opcua_array_SByte,
&ett_opcua_array_Byte,
&ett_opcua_array_Int16,
&ett_opcua_array_UInt16,
&ett_opcua_array_Int32,
&ett_opcua_array_UInt32,
&ett_opcua_array_Int64,
&ett_opcua_array_UInt64,
&ett_opcua_array_Float,
&ett_opcua_array_Double,
&ett_opcua_array_String,
&ett_opcua_array_DateTime,
&ett_opcua_array_Guid,
&ett_opcua_array_ByteString,
&ett_opcua_array_XmlElement,
&ett_opcua_array_NodeId,
&ett_opcua_array_ExpandedNodeId,
&ett_opcua_array_StatusCode,
&ett_opcua_array_DiagnosticInfo,
&ett_opcua_array_QualifiedName,
&ett_opcua_array_LocalizedText,
&ett_opcua_array_ExtensionObject,
&ett_opcua_array_DataValue,
&ett_opcua_array_Variant,
&ett_opcua_returnDiagnostics
};
void registerSimpleTypes(int proto)
{
expert_module_t* expert_proto;
static hf_register_info hf[] =
{
/* id full name abbreviation type display strings bitmask blurb HFILL */
{&hf_opcua_diag_mask, {"EncodingMask", "opcua.diag.mask", FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL}},
{&hf_opcua_diag_mask_symbolicflag, {"has symbolic id", "opcua.diag.has_symbolic_id", FT_BOOLEAN, 8, NULL, DIAGNOSTICINFO_ENCODINGMASK_SYMBOLICID_FLAG, NULL, HFILL}},
{&hf_opcua_diag_mask_namespaceflag, {"has namespace", "opcua.diag.has_namespace", FT_BOOLEAN, 8, NULL, DIAGNOSTICINFO_ENCODINGMASK_NAMESPACE_FLAG, NULL, HFILL}},
{&hf_opcua_diag_mask_localizedtextflag, {"has localizedtext", "opcua.diag.has_localizedtext", FT_BOOLEAN, 8, NULL, DIAGNOSTICINFO_ENCODINGMASK_LOCALIZEDTEXT_FLAG, NULL, HFILL}},
{&hf_opcua_diag_mask_localeflag, {"has locale", "opcua.diag.has_locale", FT_BOOLEAN, 8, NULL, DIAGNOSTICINFO_ENCODINGMASK_LOCALE_FLAG, NULL, HFILL}},
{&hf_opcua_diag_mask_additionalinfoflag, {"has additional info", "opcua.diag.has_additional_info", FT_BOOLEAN, 8, NULL, DIAGNOSTICINFO_ENCODINGMASK_ADDITIONALINFO_FLAG, NULL, HFILL}},
{&hf_opcua_diag_mask_innerstatuscodeflag, {"has inner statuscode", "opcua.diag.has_inner_statuscode", FT_BOOLEAN, 8, NULL, DIAGNOSTICINFO_ENCODINGMASK_INNERSTATUSCODE_FLAG, NULL, HFILL}},
{&hf_opcua_diag_mask_innerdiaginfoflag, {"has inner diagnostic info", "opcua.diag.has_inner_diagnostic_code", FT_BOOLEAN, 8, NULL, DIAGNOSTICINFO_ENCODINGMASK_INNERDIAGNOSTICINFO_FLAG, NULL, HFILL}},
{&hf_opcua_loctext_mask, {"EncodingMask", "opcua.loctext.mask", FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL}},
{&hf_opcua_loctext_mask_localeflag, {"has locale information", "opcua.loctext.has_locale_information", FT_BOOLEAN, 8, NULL, LOCALIZEDTEXT_ENCODINGBYTE_LOCALE, NULL, HFILL}},
{&hf_opcua_loctext_mask_textflag, {"has text", "opcua.loctext.has_text", FT_BOOLEAN, 8, NULL, LOCALIZEDTEXT_ENCODINGBYTE_TEXT, NULL, HFILL}},
{&hf_opcua_nodeid_encodingmask, {"EncodingMask", "opcua.nodeid.encodingmask", FT_UINT8, BASE_HEX, VALS(g_nodeidmasks), 0x0F, NULL, HFILL}},
{&hf_opcua_nodeid_nsindex, {"Namespace Index", "opcua.nodeid.nsindex", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL}},
{&hf_opcua_nodeid_numeric, {"Identifier Numeric", "opcua.nodeid.numeric", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL}},
{&hf_opcua_nodeid_string, {"Identifier String", "opcua.nodeid.string", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL}},
{&hf_opcua_nodeid_guid, {"Identifier Guid", "opcua.nodeid.guid", FT_GUID, BASE_NONE, NULL, 0x0, NULL, HFILL}},
{&hf_opcua_nodeid_bytestring, {"Identifier ByteString", "opcua.nodeid.bytestring", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL}},
{&hf_opcua_expandednodeid_mask, {"EncodingMask", "opcua.expandednodeid.mask", FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL}},
{&hf_opcua_expandednodeid_mask_namespaceuri, {"has namespace uri", "opcua.expandednodeid.has_namespace_uri", FT_BOOLEAN, 8, NULL, NODEID_NAMESPACEURIFLAG, NULL, HFILL}},
{&hf_opcua_expandednodeid_mask_serverindex, {"has server index", "opcua.expandednodeid.has_server_index", FT_BOOLEAN, 8, NULL, NODEID_SERVERINDEXFLAG, NULL, HFILL}},
{&hf_opcua_localizedtext_locale, {"Locale", "opcua.loctext.Locale", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL}},
{&hf_opcua_localizedtext_text, {"Text", "opcua.loctext.Text", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL}},
{&hf_opcua_qualifiedname_id, {"Id", "opcua.qualname.Id", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL}},
{&hf_opcua_qualifiedname_name, {"Name", "opcua.qualname.Name", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL}},
{&hf_opcua_datavalue_mask, {"EncodingMask", "opcua.datavalue.mask", FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL}},
{&hf_opcua_datavalue_mask_valueflag, {"has value", "opcua.datavalue.has_value", FT_BOOLEAN, 8, NULL, DATAVALUE_ENCODINGBYTE_VALUE, NULL, HFILL}},
{&hf_opcua_datavalue_mask_statuscodeflag, {"has statuscode", "opcua.datavalue.has_statuscode", FT_BOOLEAN, 8, NULL, DATAVALUE_ENCODINGBYTE_STATUSCODE, NULL, HFILL}},
{&hf_opcua_datavalue_mask_sourcetimestampflag, {"has source timestamp", "opcua.datavalue.has_source_timestamp", FT_BOOLEAN, 8, NULL, DATAVALUE_ENCODINGBYTE_SOURCETIMESTAMP, NULL, HFILL}},
{&hf_opcua_datavalue_mask_servertimestampflag, {"has server timestamp", "opcua.datavalue.has_server_timestamp", FT_BOOLEAN, 8, NULL, DATAVALUE_ENCODINGBYTE_SERVERTIMESTAMP, NULL, HFILL}},
{&hf_opcua_datavalue_mask_sourcepicoseconds, {"has source picoseconds", "opcua.datavalue.has_source_picoseconds", FT_BOOLEAN, 8, NULL, DATAVALUE_ENCODINGBYTE_SOURCEPICOSECONDS, NULL, HFILL}},
{&hf_opcua_datavalue_mask_serverpicoseconds, {"has server picoseconds", "opcua.datavalue.has_server_picoseconds", FT_BOOLEAN, 8, NULL, DATAVALUE_ENCODINGBYTE_SERVERPICOSECONDS, NULL, HFILL}},
{&hf_opcua_variant_encodingmask, {"Variant Type", "opcua.variant.has_value", FT_UINT8, BASE_HEX, VALS(g_VariantTypes), 0x0, NULL, HFILL}},
{&hf_opcua_SourceTimestamp, {"SourceTimestamp", "opcua.datavalue.SourceTimestamp", FT_ABSOLUTE_TIME, ABSOLUTE_TIME_LOCAL, NULL, 0x0, NULL, HFILL}},
{&hf_opcua_SourcePicoseconds, {"SourcePicoseconds", "opcua.datavalue.SourcePicoseconds", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL}},
{&hf_opcua_ServerTimestamp, {"ServerTimestamp", "opcua.datavalue.ServerTimestamp", FT_ABSOLUTE_TIME, ABSOLUTE_TIME_LOCAL, NULL, 0x0, NULL, HFILL}},
{&hf_opcua_ServerPicoseconds, {"ServerPicoseconds", "opcua.datavalue.ServerPicoseconds", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL}},
{&hf_opcua_diag_symbolicid, {"SymbolicId", "opcua.diag.SymbolicId", FT_INT32, BASE_DEC, NULL, 0x0, NULL, HFILL}},
{&hf_opcua_diag_namespace, {"Namespace", "opcua.diag.Namespace", FT_INT32, BASE_DEC, NULL, 0x0, NULL, HFILL}},
{&hf_opcua_diag_localizedtext, {"LocalizedText", "opcua.diag.LocalizedText", FT_INT32, BASE_DEC, NULL, 0x0, NULL, HFILL}},
{&hf_opcua_diag_locale, {"Locale", "opcua.diag.Locale", FT_INT32, BASE_DEC, NULL, 0x0, NULL, HFILL}},
{&hf_opcua_diag_additionalinfo, {"AdditionalInfo", "opcua.diag.AdditionalInfo", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL}},
{&hf_opcua_diag_innerstatuscode, {"InnerStatusCode", "opcua.diag.InnerStatusCode", FT_UINT32, BASE_HEX, NULL, 0x0, NULL, HFILL}},
{&hf_opcua_extobj_mask, {"EncodingMask", "opcua.extobj.mask", FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL}},
{&hf_opcua_extobj_mask_binbodyflag, {"has binary body", "opcua.extobj.has_binary_body", FT_BOOLEAN, 8, NULL, EXTOBJ_ENCODINGMASK_BINBODY_FLAG, NULL, HFILL}},
{&hf_opcua_extobj_mask_xmlbodyflag, {"has xml body", "opcua.extobj.has_xml_body", FT_BOOLEAN, 8, NULL, EXTOBJ_ENCODINGMASK_XMLBODY_FLAG, NULL, HFILL}},
{&hf_opcua_ArraySize, {"ArraySize", "opcua.variant.ArraySize", FT_INT32, BASE_DEC, NULL, 0x0, NULL, HFILL}},
{&hf_opcua_ServerIndex, {"ServerIndex", "opcua.expandednodeid.ServerIndex", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL}},
{&hf_opcua_status_StructureChanged, {"StructureChanged", "opcua.statuscode.structureChanged", FT_BOOLEAN, 16, NULL, STATUSCODE_STRUCTURECHANGED, NULL, HFILL}},
{&hf_opcua_status_SemanticsChanged, {"SemanticsChanged", "opcua.statuscode.semanticsChanged", FT_BOOLEAN, 16, NULL, STATUSCODE_SEMANTICSCHANGED, NULL, HFILL}},
{&hf_opcua_status_InfoBit_Limit_Overflow, {"Overflow", "opcua.statuscode.overflow", FT_BOOLEAN, 16, NULL, STATUSCODE_INFOBIT_OVERFLOW, NULL, HFILL}},
{&hf_opcua_status_InfoBit_Historian_Partial, {"HistorianBit: Partial", "opcua.statuscode.historian.partial", FT_BOOLEAN, 16, NULL, STATUSCODE_INFOBIT_HISTORIAN_PARTIAL, NULL, HFILL}},
{&hf_opcua_status_InfoBit_Historian_ExtraData, {"HistorianBit: ExtraData", "opcua.statuscode.historian.extraData", FT_BOOLEAN, 16, NULL, STATUSCODE_INFOBIT_HISTORIAN_EXTRADATA, NULL, HFILL}},
{&hf_opcua_status_InfoBit_Historian_MultiValue, {"HistorianBit: MultiValue", "opcua.statuscode.historian.multiValue", FT_BOOLEAN, 16, NULL, STATUSCODE_INFOBIT_HISTORIAN_MULTIVALUE, NULL, HFILL}},
{&hf_opcua_status_InfoType, {"InfoType", "opcua.statuscode.infoType", FT_UINT16, BASE_HEX, VALS(g_infotype), 0x0C00, NULL, HFILL}},
{&hf_opcua_status_Limit, {"Limit", "opcua.statuscode.limit", FT_UINT16, BASE_HEX, VALS(g_limit), 0x0300, NULL, HFILL}},
{&hf_opcua_status_Historian, {"Historian", "opcua.statuscode.historian", FT_UINT16, BASE_HEX, VALS(g_historian), 0x0003, NULL, HFILL}},
{&hf_opcua_returnDiag, {"Return Diagnostics", "opcua.returndiag", FT_UINT32, BASE_HEX, NULL, 0x0, NULL, HFILL}},
{&hf_opcua_returnDiag_mask_sl_symbolicId, {"ServiceLevel / SymbolicId", "opcua.returndiag.servicelevel.symbolicid", FT_BOOLEAN, 16, NULL, RETURNDIAGNOSTICS_SERVICELEVEL_SYMBOLICID, NULL, HFILL}},
{&hf_opcua_returnDiag_mask_sl_localizedText, {"ServiceLevel / LocalizedText", "opcua.returndiag.servicelevel.localizedtext", FT_BOOLEAN, 16, NULL, RETURNDIAGNOSTICS_SERVICELEVEL_LOCALIZEDTEXT, NULL, HFILL}},
{&hf_opcua_returnDiag_mask_sl_additionalinfo, {"ServiceLevel / AdditionalInfo", "opcua.returndiag.servicelevel.additionalinfo", FT_BOOLEAN, 16, NULL, RETURNDIAGNOSTICS_SERVICELEVEL_ADDITIONALINFO, NULL, HFILL}},
{&hf_opcua_returnDiag_mask_sl_innerstatuscode, {"ServiceLevel / Inner StatusCode", "opcua.returndiag.servicelevel.innerstatuscode", FT_BOOLEAN, 16, NULL, RETURNDIAGNOSTICS_SERVICELEVEL_INNERSTATUSCODE, NULL, HFILL}},
{&hf_opcua_returnDiag_mask_sl_innerdiagnostics, {"ServiceLevel / Inner Diagnostics", "opcua.returndiag.servicelevel.innerdiagnostics", FT_BOOLEAN, 16, NULL, RETURNDIAGNOSTICS_SERVICELEVEL_INNERDIAGNOSTICS, NULL, HFILL}},
{&hf_opcua_returnDiag_mask_ol_symbolicId, {"OperationLevel / SymbolicId", "opcua.returndiag.operationlevel.symbolicid", FT_BOOLEAN, 16, NULL, RETURNDIAGNOSTICS_OPERATIONLEVEL_SYMBOLICID, NULL, HFILL}},
{&hf_opcua_returnDiag_mask_ol_localizedText, {"OperationLevel / LocalizedText", "opcua.returndiag.operationlevel.localizedtext", FT_BOOLEAN, 16, NULL, RETURNDIAGNOSTICS_OPERATIONLEVEL_LOCALIZEDTEXT, NULL, HFILL}},
{&hf_opcua_returnDiag_mask_ol_additionalinfo, {"OperationLevel / AdditionalInfo", "opcua.returndiag.operationlevel.additionalinfo", FT_BOOLEAN, 16, NULL, RETURNDIAGNOSTICS_OPERATIONLEVEL_ADDITIONALINFO, NULL, HFILL}},
{&hf_opcua_returnDiag_mask_ol_innerstatuscode, {"OperationLevel / Inner StatusCode", "opcua.returndiag.operationlevel.innerstatuscode", FT_BOOLEAN, 16, NULL, RETURNDIAGNOSTICS_OPERATIONLEVEL_INNERSTATUSCODE, NULL, HFILL}},
{&hf_opcua_returnDiag_mask_ol_innerdiagnostics, {"OperationLevel / Inner Diagnostics", "opcua.returndiag.operationlevel.innerdiagnostics", FT_BOOLEAN, 16, NULL, RETURNDIAGNOSTICS_OPERATIONLEVEL_INNERDIAGNOSTICS, NULL, HFILL}},
};
static ei_register_info ei[] = {
{ &ei_array_length, { "opcua.array.length", PI_UNDECODED, PI_ERROR, "Max array length exceeded", EXPFILL }},
};
proto_register_field_array(proto, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
expert_proto = expert_register_protocol(proto);
expert_register_field_array(expert_proto, ei, array_length(ei));
}
proto_item* parseBoolean(proto_tree *tree, tvbuff_t *tvb, packet_info *pinfo _U_, gint *pOffset, int hfIndex)
{
proto_item *item = proto_tree_add_item(tree, hfIndex, tvb, *pOffset, 1, ENC_LITTLE_ENDIAN);
*pOffset+=1;
return item;
}
proto_item* parseByte(proto_tree *tree, tvbuff_t *tvb, packet_info *pinfo _U_, gint *pOffset, int hfIndex)
{
proto_item *item = proto_tree_add_item(tree, hfIndex, tvb, *pOffset, 1, ENC_LITTLE_ENDIAN);
*pOffset+=1;
return item;
}
proto_item* parseSByte(proto_tree *tree, tvbuff_t *tvb, packet_info *pinfo _U_, gint *pOffset, int hfIndex)
{
proto_item *item = proto_tree_add_item(tree, hfIndex, tvb, *pOffset, 1, ENC_LITTLE_ENDIAN);
*pOffset+=1;
return item;
}
proto_item* parseUInt16(proto_tree *tree, tvbuff_t *tvb, packet_info *pinfo _U_, gint *pOffset, int hfIndex)
{
proto_item *item = proto_tree_add_item(tree, hfIndex, tvb, *pOffset, 2, ENC_LITTLE_ENDIAN);
*pOffset+=2;
return item;
}
proto_item* parseInt16(proto_tree *tree, tvbuff_t *tvb, packet_info *pinfo _U_, gint *pOffset, int hfIndex)
{
proto_item *item = proto_tree_add_item(tree, hfIndex, tvb, *pOffset, 2, ENC_LITTLE_ENDIAN);
*pOffset+=2;
return item;
}
proto_item* parseUInt32(proto_tree *tree, tvbuff_t *tvb, packet_info *pinfo _U_, gint *pOffset, int hfIndex)
{
proto_item *item = proto_tree_add_item(tree, hfIndex, tvb, *pOffset, 4, ENC_LITTLE_ENDIAN);
*pOffset+=4;
return item;
}
proto_item* parseInt32(proto_tree *tree, tvbuff_t *tvb, packet_info *pinfo _U_, gint *pOffset, int hfIndex)
{
proto_item *item = proto_tree_add_item(tree, hfIndex, tvb, *pOffset, 4, ENC_LITTLE_ENDIAN);
*pOffset+=4;
return item;
}
proto_item* parseUInt64(proto_tree *tree, tvbuff_t *tvb, packet_info *pinfo _U_, gint *pOffset, int hfIndex)
{
proto_item *item = proto_tree_add_item(tree, hfIndex, tvb, *pOffset, 8, ENC_LITTLE_ENDIAN);
*pOffset+=8;
return item;
}
proto_item* parseInt64(proto_tree *tree, tvbuff_t *tvb, packet_info *pinfo _U_, gint *pOffset, int hfIndex)
{
proto_item *item = proto_tree_add_item(tree, hfIndex, tvb, *pOffset, 8, ENC_LITTLE_ENDIAN);
*pOffset+=8;
return item;
}
proto_item* parseString(proto_tree *tree, tvbuff_t *tvb, packet_info *pinfo _U_, gint *pOffset, int hfIndex)
{
proto_item *item = NULL;
char *szValue;
gint iOffset = *pOffset;
gint32 iLen = tvb_get_letohl(tvb, *pOffset);
iOffset+=4;
if (iLen == -1)
{
item = proto_tree_add_item(tree, hfIndex, tvb, *pOffset, 0, ENC_NA);
proto_item_append_text(item, "[OpcUa Null String]");
proto_item_set_end(item, tvb, *pOffset + 4);
}
else if (iLen == 0)
{
item = proto_tree_add_item(tree, hfIndex, tvb, *pOffset, 0, ENC_NA);
proto_item_append_text(item, "[OpcUa Empty String]");
proto_item_set_end(item, tvb, *pOffset + 4);
}
else if (iLen > 0)
{
item = proto_tree_add_item(tree, hfIndex, tvb, iOffset, iLen, ENC_UTF_8|ENC_NA);
iOffset += iLen; /* eat the whole string */
}
else
{
item = proto_tree_add_item(tree, hfIndex, tvb, *pOffset, 0, ENC_NA);
szValue = wmem_strdup_printf(wmem_packet_scope(), "[Invalid String] Invalid length: %d", iLen);
proto_item_append_text(item, "%s", szValue);
proto_item_set_end(item, tvb, *pOffset + 4);
}
*pOffset = iOffset;
return item;
}
proto_item* parseStatusCode(proto_tree *tree, tvbuff_t *tvb, packet_info *pinfo _U_, gint *pOffset, int hfIndex)
{
proto_item *item = NULL;
guint32 uStatusCode = 0;
const gchar *szStatusCode = NULL;
item = proto_tree_add_item(tree, hfIndex, tvb, *pOffset, 4, ENC_LITTLE_ENDIAN);
uStatusCode = tvb_get_letohl(tvb, *pOffset);
szStatusCode = val_to_str_const(uStatusCode & 0xFFFF0000, g_statusCodes, "Unknown Status Code");
proto_item_append_text(item, " [%s]", szStatusCode);
/* check for status code info flags */
if (uStatusCode & 0x0000FFFF)
{
gint iOffset = *pOffset;
proto_tree *flags_tree;
proto_item *ti_inner;
flags_tree = proto_item_add_subtree(item, ett_opcua_statuscode);
proto_tree_add_item(flags_tree, hf_opcua_status_StructureChanged, tvb, iOffset, 2, ENC_LITTLE_ENDIAN);
proto_tree_add_item(flags_tree, hf_opcua_status_SemanticsChanged, tvb, iOffset, 2, ENC_LITTLE_ENDIAN);
ti_inner = proto_tree_add_item(flags_tree, hf_opcua_status_InfoType, tvb, iOffset, 2, ENC_LITTLE_ENDIAN);
switch (uStatusCode & 0x00000C00)
{
case STATUSCODE_INFOTYPE_DATAVALUE:
{
/* InfoType == DataValue */
proto_tree *tree_inner;
tree_inner = proto_item_add_subtree(ti_inner, ett_opcua_statuscode_info);
proto_tree_add_item(tree_inner, hf_opcua_status_Limit, tvb, iOffset, 2, ENC_LITTLE_ENDIAN);
proto_tree_add_item(tree_inner, hf_opcua_status_InfoBit_Limit_Overflow, tvb, iOffset, 2, ENC_LITTLE_ENDIAN);
proto_tree_add_item(tree_inner, hf_opcua_status_InfoBit_Historian_MultiValue, tvb, iOffset, 2, ENC_LITTLE_ENDIAN);
proto_tree_add_item(tree_inner, hf_opcua_status_InfoBit_Historian_ExtraData, tvb, iOffset, 2, ENC_LITTLE_ENDIAN);
proto_tree_add_item(tree_inner, hf_opcua_status_InfoBit_Historian_Partial, tvb, iOffset, 2, ENC_LITTLE_ENDIAN);
proto_tree_add_item(tree_inner, hf_opcua_status_Historian, tvb, iOffset, 2, ENC_LITTLE_ENDIAN);
}
default:
break;
}
}
*pOffset += 4;
return item;
}
void parseLocalizedText(proto_tree *tree, tvbuff_t *tvb, packet_info *pinfo, gint *pOffset, const char *szFieldName)
{
static const int *loctext_mask[] = {&hf_opcua_loctext_mask_localeflag,
&hf_opcua_loctext_mask_textflag,
NULL};
gint iOffset = *pOffset;
guint8 EncodingMask;
proto_tree *subtree;
proto_item *ti;
subtree = proto_tree_add_subtree_format(tree, tvb, *pOffset, -1, ett_opcua_localizedtext, &ti, "%s: LocalizedText", szFieldName);
/* parse encoding mask */
EncodingMask = tvb_get_guint8(tvb, iOffset);
proto_tree_add_bitmask(subtree, tvb, iOffset, hf_opcua_loctext_mask, ett_opcua_localizedtext_encodingmask, loctext_mask, ENC_LITTLE_ENDIAN);
iOffset++;
if (EncodingMask & LOCALIZEDTEXT_ENCODINGBYTE_LOCALE)
{
parseString(subtree, tvb, pinfo, &iOffset, hf_opcua_localizedtext_locale);
}
if (EncodingMask & LOCALIZEDTEXT_ENCODINGBYTE_TEXT)
{
parseString(subtree, tvb, pinfo, &iOffset, hf_opcua_localizedtext_text);
}
proto_item_set_end(ti, tvb, iOffset);
*pOffset = iOffset;
}
proto_item* parseGuid(proto_tree *tree, tvbuff_t *tvb, packet_info *pinfo _U_, gint *pOffset, int hfIndex)
{
proto_item *item = proto_tree_add_item(tree, hfIndex, tvb, *pOffset, GUID_LEN, ENC_NA);
*pOffset+=GUID_LEN;
return item;
}
proto_item* parseByteString(proto_tree *tree, tvbuff_t *tvb, packet_info *pinfo _U_, gint *pOffset, int hfIndex)
{
proto_item *item = NULL;
char *szValue;
int iOffset = *pOffset;
gint32 iLen = tvb_get_letohl(tvb, iOffset);
iOffset += 4;
if (iLen == -1)
{
item = proto_tree_add_item(tree, hfIndex, tvb, *pOffset, 0, ENC_NA);
proto_item_append_text(item, "[OpcUa Null ByteString]");
proto_item_set_end(item, tvb, *pOffset + 4);
}
else if (iLen == 0)
{
item = proto_tree_add_item(tree, hfIndex, tvb, *pOffset, 0, ENC_NA);
proto_item_append_text(item, "[OpcUa Empty ByteString]");
proto_item_set_end(item, tvb, *pOffset + 4);
}
else if (iLen > 0)
{
item = proto_tree_add_item(tree, hfIndex, tvb, iOffset, iLen, ENC_NA);
iOffset += iLen; /* eat the whole bytestring */
}
else
{
item = proto_tree_add_item(tree, hfIndex, tvb, *pOffset, 0, ENC_NA);
szValue = wmem_strdup_printf(wmem_packet_scope(), "[Invalid ByteString] Invalid length: %d", iLen);
proto_item_append_text(item, "%s", szValue);
proto_item_set_end(item, tvb, *pOffset + 4);
}
*pOffset = iOffset;
return item;
}
proto_item* parseXmlElement(proto_tree *tree, tvbuff_t *tvb, packet_info *pinfo, gint *pOffset, int hfIndex)
{
return parseByteString(tree, tvb, pinfo, pOffset, hfIndex);
}
proto_item* parseFloat(proto_tree *tree, tvbuff_t *tvb, packet_info *pinfo _U_, gint *pOffset, int hfIndex)
{
proto_item *item = proto_tree_add_item(tree, hfIndex, tvb, *pOffset, (int)sizeof(gfloat), ENC_LITTLE_ENDIAN);
*pOffset += (int)sizeof(gfloat);
return item;
}
proto_item* parseDouble(proto_tree *tree, tvbuff_t *tvb, packet_info *pinfo _U_, gint *pOffset, int hfIndex)
{
proto_item *item = proto_tree_add_item(tree, hfIndex, tvb, *pOffset, (int)sizeof(gdouble), ENC_LITTLE_ENDIAN);
*pOffset += (int)sizeof(gdouble);
return item;
}
proto_item* parseDateTime(proto_tree *tree, tvbuff_t *tvb, packet_info *pinfo _U_, gint *pOffset, int hfIndex)
{
proto_item *item = NULL;
*pOffset = dissect_nt_64bit_time_ex(tvb, tree, *pOffset, hfIndex, &item, FALSE);
return item;
}
void parseDiagnosticInfo(proto_tree *tree, tvbuff_t *tvb, packet_info *pinfo, gint *pOffset, const char *szFieldName)
{
static const int *diag_mask[] = {&hf_opcua_diag_mask_symbolicflag,
&hf_opcua_diag_mask_namespaceflag,
&hf_opcua_diag_mask_localizedtextflag,
&hf_opcua_diag_mask_localeflag,
&hf_opcua_diag_mask_additionalinfoflag,
&hf_opcua_diag_mask_innerstatuscodeflag,
&hf_opcua_diag_mask_innerdiaginfoflag,
NULL};
gint iOffset = *pOffset;
guint8 EncodingMask;
proto_tree *subtree;
proto_item *ti;
subtree = proto_tree_add_subtree_format(tree, tvb, *pOffset, -1, ett_opcua_diagnosticinfo, &ti, "%s: DiagnosticInfo", szFieldName);
/* parse encoding mask */
EncodingMask = tvb_get_guint8(tvb, iOffset);
proto_tree_add_bitmask(subtree, tvb, iOffset, hf_opcua_diag_mask, ett_opcua_diagnosticinfo_encodingmask, diag_mask, ENC_LITTLE_ENDIAN);
iOffset++;
if (EncodingMask & DIAGNOSTICINFO_ENCODINGMASK_SYMBOLICID_FLAG)
{
parseInt32(subtree, tvb, pinfo, &iOffset, hf_opcua_diag_symbolicid);
}
if (EncodingMask & DIAGNOSTICINFO_ENCODINGMASK_NAMESPACE_FLAG)
{
parseInt32(subtree, tvb, pinfo, &iOffset, hf_opcua_diag_namespace);
}
if (EncodingMask & DIAGNOSTICINFO_ENCODINGMASK_LOCALIZEDTEXT_FLAG)
{
parseInt32(subtree, tvb, pinfo, &iOffset, hf_opcua_diag_localizedtext);
}
if (EncodingMask & DIAGNOSTICINFO_ENCODINGMASK_LOCALE_FLAG)
{
parseInt32(subtree, tvb, pinfo, &iOffset, hf_opcua_diag_locale);
}
if (EncodingMask & DIAGNOSTICINFO_ENCODINGMASK_ADDITIONALINFO_FLAG)
{
parseString(subtree, tvb, pinfo, &iOffset, hf_opcua_diag_additionalinfo);
}
if (EncodingMask & DIAGNOSTICINFO_ENCODINGMASK_INNERSTATUSCODE_FLAG)
{
parseStatusCode(subtree, tvb, pinfo, &iOffset, hf_opcua_diag_innerstatuscode);
}
if (EncodingMask & DIAGNOSTICINFO_ENCODINGMASK_INNERDIAGNOSTICINFO_FLAG)
{
parseDiagnosticInfo(subtree, tvb, pinfo, &iOffset, "Inner DiagnosticInfo");
}
proto_item_set_end(ti, tvb, iOffset);
*pOffset = iOffset;
}
void parseQualifiedName(proto_tree *tree, tvbuff_t *tvb, packet_info *pinfo, gint *pOffset, const char *szFieldName)
{
proto_item *ti;
proto_tree *subtree = proto_tree_add_subtree_format(tree, tvb, *pOffset, -1,
ett_opcua_qualifiedname, &ti, "%s: QualifiedName", szFieldName);
parseUInt16(subtree, tvb, pinfo, pOffset, hf_opcua_qualifiedname_id);
parseString(subtree, tvb, pinfo, pOffset, hf_opcua_qualifiedname_name);
proto_item_set_end(ti, tvb, *pOffset);
}
void parseDataValue(proto_tree *tree, tvbuff_t *tvb, packet_info *pinfo, gint *pOffset, const char *szFieldName)
{
static const int *datavalue_mask[] = {&hf_opcua_datavalue_mask_valueflag,
&hf_opcua_datavalue_mask_statuscodeflag,
&hf_opcua_datavalue_mask_sourcetimestampflag,
&hf_opcua_datavalue_mask_servertimestampflag,
&hf_opcua_datavalue_mask_sourcepicoseconds,
&hf_opcua_datavalue_mask_serverpicoseconds,
NULL};
proto_item *ti;
proto_tree *subtree = proto_tree_add_subtree_format(tree, tvb, *pOffset, -1,
ett_opcua_datavalue, &ti, "%s: DataValue", szFieldName);
gint iOffset = *pOffset;
guint8 EncodingMask;
EncodingMask = tvb_get_guint8(tvb, iOffset);
proto_tree_add_bitmask(subtree, tvb, iOffset, hf_opcua_datavalue_mask, ett_opcua_datavalue_encodingmask, datavalue_mask, ENC_LITTLE_ENDIAN);
iOffset++;
if (EncodingMask & DATAVALUE_ENCODINGBYTE_VALUE)
{
parseVariant(subtree, tvb, pinfo, &iOffset, "Value");
}
if (EncodingMask & DATAVALUE_ENCODINGBYTE_STATUSCODE)
{
parseStatusCode(subtree, tvb, pinfo, &iOffset, hf_opcua_StatusCode);
}
if (EncodingMask & DATAVALUE_ENCODINGBYTE_SOURCETIMESTAMP)
{
parseDateTime(subtree, tvb, pinfo, &iOffset, hf_opcua_SourceTimestamp);
}
if (EncodingMask & DATAVALUE_ENCODINGBYTE_SOURCEPICOSECONDS)
{
parseUInt16(subtree, tvb, pinfo, &iOffset, hf_opcua_SourcePicoseconds);
}
if (EncodingMask & DATAVALUE_ENCODINGBYTE_SERVERTIMESTAMP)
{
parseDateTime(subtree, tvb, pinfo, &iOffset, hf_opcua_ServerTimestamp);
}
if (EncodingMask & DATAVALUE_ENCODINGBYTE_SERVERPICOSECONDS)
{
parseUInt16(subtree, tvb, pinfo, &iOffset, hf_opcua_ServerPicoseconds);
}
proto_item_set_end(ti, tvb, iOffset);
*pOffset = iOffset;
}
void parseVariant(proto_tree *tree, tvbuff_t *tvb, packet_info *pinfo, gint *pOffset, const char *szFieldName)
{
proto_item *ti;
proto_tree *subtree = proto_tree_add_subtree_format(tree, tvb, *pOffset, -1,
ett_opcua_variant, &ti, "%s: Variant", szFieldName);
gint iOffset = *pOffset;
guint8 EncodingMask;
gint32 ArrayDimensions = 0;
EncodingMask = tvb_get_guint8(tvb, iOffset);
proto_tree_add_item(subtree, hf_opcua_variant_encodingmask, tvb, iOffset, 1, ENC_LITTLE_ENDIAN);
iOffset++;
if (EncodingMask & VARIANT_ARRAYMASK)
{
/* type is encoded in bits 0-5 */
switch(EncodingMask & 0x3f)
{
case OpcUaType_Null: break;
case OpcUaType_Boolean: parseArraySimple(subtree, tvb, pinfo, &iOffset, "Boolean", "Boolean", hf_opcua_Boolean, parseBoolean, ett_opcua_array_Boolean); break;
case OpcUaType_SByte: parseArraySimple(subtree, tvb, pinfo, &iOffset, "SByte", "SByte", hf_opcua_SByte, parseSByte, ett_opcua_array_SByte); break;
case OpcUaType_Byte: parseArraySimple(subtree, tvb, pinfo, &iOffset, "Byte", "Byte", hf_opcua_Byte, parseByte, ett_opcua_array_Byte); break;
case OpcUaType_Int16: parseArraySimple(subtree, tvb, pinfo, &iOffset, "Int16", "Int16", hf_opcua_Int16, parseInt16, ett_opcua_array_Int16); break;
case OpcUaType_UInt16: parseArraySimple(subtree, tvb, pinfo, &iOffset, "UInt16", "UInt16", hf_opcua_UInt16, parseUInt16, ett_opcua_array_UInt16); break;
case OpcUaType_Int32: parseArraySimple(subtree, tvb, pinfo, &iOffset, "Int32", "Int32", hf_opcua_Int32, parseInt32, ett_opcua_array_Int32); break;
case OpcUaType_UInt32: parseArraySimple(subtree, tvb, pinfo, &iOffset, "UInt32", "UInt32", hf_opcua_UInt32, parseUInt32, ett_opcua_array_UInt32); break;
case OpcUaType_Int64: parseArraySimple(subtree, tvb, pinfo, &iOffset, "Int64", "Int64", hf_opcua_Int64, parseInt64, ett_opcua_array_Int64); break;
case OpcUaType_UInt64: parseArraySimple(subtree, tvb, pinfo, &iOffset, "UInt64", "UInt64", hf_opcua_UInt64, parseUInt64, ett_opcua_array_UInt64); break;
case OpcUaType_Float: parseArraySimple(subtree, tvb, pinfo, &iOffset, "Float", "Float", hf_opcua_Float, parseFloat, ett_opcua_array_Float); break;
case OpcUaType_Double: parseArraySimple(subtree, tvb, pinfo, &iOffset, "Double", "Double", hf_opcua_Double, parseDouble, ett_opcua_array_Double); break;
case OpcUaType_String: parseArraySimple(subtree, tvb, pinfo, &iOffset, "String", "String", hf_opcua_String, parseString, ett_opcua_array_String); break;
case OpcUaType_DateTime: parseArraySimple(subtree, tvb, pinfo, &iOffset, "DateTime", "DateTime", hf_opcua_DateTime, parseDateTime, ett_opcua_array_DateTime); break;
case OpcUaType_Guid: parseArraySimple(subtree, tvb, pinfo, &iOffset, "Guid", "Guid", hf_opcua_Guid, parseGuid, ett_opcua_array_Guid); break;
case OpcUaType_ByteString: parseArraySimple(subtree, tvb, pinfo, &iOffset, "ByteString", "ByteString", hf_opcua_ByteString, parseByteString, ett_opcua_array_ByteString); break;
case OpcUaType_XmlElement: parseArraySimple(subtree, tvb, pinfo, &iOffset, "XmlElement", "XmlElement", hf_opcua_XmlElement, parseXmlElement, ett_opcua_array_XmlElement); break;
case OpcUaType_NodeId: parseArrayComplex(subtree, tvb, pinfo, &iOffset, "NodeId", "NodeId", parseNodeId, ett_opcua_array_NodeId); break;
case OpcUaType_ExpandedNodeId: parseArrayComplex(subtree, tvb, pinfo, &iOffset, "ExpandedNodeId", "ExpandedNodeId", parseExpandedNodeId, ett_opcua_array_ExpandedNodeId); break;
case OpcUaType_StatusCode: parseArraySimple(subtree, tvb, pinfo, &iOffset, "StatusCode", "StatusCode", hf_opcua_StatusCode, parseStatusCode, ett_opcua_array_StatusCode); break;
case OpcUaType_DiagnosticInfo: parseArrayComplex(subtree, tvb, pinfo, &iOffset, "DiagnosticInfo", "DiagnosticInfo", parseDiagnosticInfo, ett_opcua_array_DiagnosticInfo); break;
case OpcUaType_QualifiedName: parseArrayComplex(subtree, tvb, pinfo, &iOffset, "QualifiedName", "QualifiedName", parseQualifiedName, ett_opcua_array_QualifiedName); break;
case OpcUaType_LocalizedText: parseArrayComplex(subtree, tvb, pinfo, &iOffset, "LocalizedText", "LocalizedText", parseLocalizedText, ett_opcua_array_LocalizedText); break;
case OpcUaType_ExtensionObject: parseArrayComplex(subtree, tvb, pinfo, &iOffset, "ExtensionObject", "ExtensionObject", parseExtensionObject, ett_opcua_array_ExtensionObject); break;
case OpcUaType_DataValue: parseArrayComplex(subtree, tvb, pinfo, &iOffset, "DataValue", "DataValue", parseDataValue, ett_opcua_array_DataValue); break;
case OpcUaType_Variant: parseArrayComplex(subtree, tvb, pinfo, &iOffset, "Variant", "Variant", parseVariant, ett_opcua_array_Variant); break;
}
if (EncodingMask & VARIANT_ARRAYDIMENSIONS)
{
proto_item *ti_2;
proto_tree *subtree_2 = proto_tree_add_subtree(subtree, tvb, iOffset, -1,
ett_opcua_variant_arraydims, &ti_2, "ArrayDimensions");
int i;
/* read array length */
ArrayDimensions = tvb_get_letohl(tvb, iOffset);
proto_tree_add_item(subtree_2, hf_opcua_ArraySize, tvb, iOffset, 4, ENC_LITTLE_ENDIAN);
if (ArrayDimensions > MAX_ARRAY_LEN)
{
proto_tree_add_expert_format(subtree_2, pinfo, &ei_array_length, tvb, iOffset, 4, "ArrayDimensions length %d too large to process", ArrayDimensions);
return;
}
iOffset += 4;
for (i=0; i<ArrayDimensions; i++)
{
parseInt32(subtree_2, tvb, pinfo, &iOffset, hf_opcua_Int32);
}
proto_item_set_end(ti_2, tvb, iOffset);
}
}
else
{
/* type is encoded in bits 0-5 */
switch(EncodingMask & 0x3f)
{
case OpcUaType_Null: break;
case OpcUaType_Boolean: parseBoolean(subtree, tvb, pinfo, &iOffset, hf_opcua_Boolean); break;
case OpcUaType_SByte: parseSByte(subtree, tvb, pinfo, &iOffset, hf_opcua_SByte); break;
case OpcUaType_Byte: parseByte(subtree, tvb, pinfo, &iOffset, hf_opcua_Byte); break;
case OpcUaType_Int16: parseInt16(subtree, tvb, pinfo, &iOffset, hf_opcua_Int16); break;
case OpcUaType_UInt16: parseUInt16(subtree, tvb, pinfo, &iOffset, hf_opcua_UInt16); break;
case OpcUaType_Int32: parseInt32(subtree, tvb, pinfo, &iOffset, hf_opcua_Int32); break;
case OpcUaType_UInt32: parseUInt32(subtree, tvb, pinfo, &iOffset, hf_opcua_UInt32); break;
case OpcUaType_Int64: parseInt64(subtree, tvb, pinfo, &iOffset, hf_opcua_Int64); break;
case OpcUaType_UInt64: parseUInt64(subtree, tvb, pinfo, &iOffset, hf_opcua_UInt64); break;
case OpcUaType_Float: parseFloat(subtree, tvb, pinfo, &iOffset, hf_opcua_Float); break;
case OpcUaType_Double: parseDouble(subtree, tvb, pinfo, &iOffset, hf_opcua_Double); break;
case OpcUaType_String: parseString(subtree, tvb, pinfo, &iOffset, hf_opcua_String); break;
case OpcUaType_DateTime: parseDateTime(subtree, tvb, pinfo, &iOffset, hf_opcua_DateTime); break;
case OpcUaType_Guid: parseGuid(subtree, tvb, pinfo, &iOffset, hf_opcua_Guid); break;
case OpcUaType_ByteString: parseByteString(subtree, tvb, pinfo, &iOffset, hf_opcua_ByteString); break;
case OpcUaType_XmlElement: parseXmlElement(subtree, tvb, pinfo, &iOffset, hf_opcua_XmlElement); break;
case OpcUaType_NodeId: parseNodeId(subtree, tvb, pinfo, &iOffset, "Value"); break;
case OpcUaType_ExpandedNodeId: parseExpandedNodeId(subtree, tvb, pinfo, &iOffset, "Value"); break;
case OpcUaType_StatusCode: parseStatusCode(subtree, tvb, pinfo, &iOffset, hf_opcua_StatusCode); break;
case OpcUaType_DiagnosticInfo: parseDiagnosticInfo(subtree, tvb, pinfo, &iOffset, "Value"); break;
case OpcUaType_QualifiedName: parseQualifiedName(subtree, tvb, pinfo, &iOffset, "Value"); break;
case OpcUaType_LocalizedText: parseLocalizedText(subtree, tvb, pinfo, &iOffset, "Value"); break;
case OpcUaType_ExtensionObject: parseExtensionObject(subtree, tvb, pinfo, &iOffset, "Value"); break;
case OpcUaType_DataValue: parseDataValue(subtree, tvb, pinfo, &iOffset, "Value"); break;
case OpcUaType_Variant: parseVariant(subtree, tvb, pinfo, &iOffset, "Value"); break;
}
}
proto_item_set_end(ti, tvb, iOffset);
*pOffset = iOffset;
}
/** General parsing function for arrays of simple types.
* All arrays have one 4 byte signed integer length information,
* followed by n data elements.
*/
void parseArraySimple(proto_tree *tree, tvbuff_t *tvb, packet_info *pinfo, gint *pOffset, const char *szFieldName, const char *szTypeName, int hfIndex, fctSimpleTypeParser pParserFunction, const gint idx)
{
proto_item *ti;
proto_tree *subtree = proto_tree_add_subtree_format(tree, tvb, *pOffset, -1, idx, &ti, "%s: Array of %s", szFieldName, szTypeName);
int i;
gint32 iLen;
/* read array length */
iLen = tvb_get_letohl(tvb, *pOffset);
proto_tree_add_item(subtree, hf_opcua_ArraySize, tvb, *pOffset, 4, ENC_LITTLE_ENDIAN);
if (iLen > MAX_ARRAY_LEN)
{
proto_tree_add_expert_format(subtree, pinfo, &ei_array_length, tvb, *pOffset, 4, "Array length %d too large to process", iLen);
return;
}
*pOffset += 4;
for (i=0; i<iLen; i++)
{
proto_item *arrayItem = (*pParserFunction)(subtree, tvb, pinfo, pOffset, hfIndex);
if (arrayItem != NULL)
{
proto_item_prepend_text(arrayItem, "[%i]: ", i);
}
}
proto_item_set_end(ti, tvb, *pOffset);
}
/** General parsing function for arrays of enums.
* All arrays have one 4 byte signed integer length information,
* followed by n data elements.
*/
void parseArrayEnum(proto_tree *tree, tvbuff_t *tvb, packet_info *pinfo, gint *pOffset, const char *szFieldName, const char *szTypeName, fctEnumParser pParserFunction, const gint idx)
{
proto_item *ti;
proto_tree *subtree = proto_tree_add_subtree_format(tree, tvb, *pOffset, -1, idx, &ti, "%s: Array of %s", szFieldName, szTypeName);
int i;
gint32 iLen;
/* read array length */
iLen = tvb_get_letohl(tvb, *pOffset);
proto_tree_add_item(subtree, hf_opcua_ArraySize, tvb, *pOffset, 4, ENC_LITTLE_ENDIAN);
if (iLen > MAX_ARRAY_LEN)
{
proto_tree_add_expert_format(subtree, pinfo, &ei_array_length, tvb, *pOffset, 4, "Array length %d too large to process", iLen);
return;
}
*pOffset += 4;
for (i=0; i<iLen; i++)
{
(*pParserFunction)(subtree, tvb, pinfo, pOffset);
}
proto_item_set_end(ti, tvb, *pOffset);
}
/** General parsing function for arrays of complex types.
* All arrays have one 4 byte signed integer length information,
* followed by n data elements.
*/
void parseArrayComplex(proto_tree *tree, tvbuff_t *tvb, packet_info *pinfo, gint *pOffset, const char *szFieldName, const char *szTypeName, fctComplexTypeParser pParserFunction, const gint idx)
{
proto_item *ti;
proto_tree *subtree = proto_tree_add_subtree_format(tree, tvb, *pOffset, -1, idx, &ti, "%s: Array of %s", szFieldName, szTypeName);
int i;
gint32 iLen;
/* read array length */
iLen = tvb_get_letohl(tvb, *pOffset);
proto_tree_add_item(subtree, hf_opcua_ArraySize, tvb, *pOffset, 4, ENC_LITTLE_ENDIAN);
if (iLen > MAX_ARRAY_LEN)
{
proto_tree_add_expert_format(subtree, pinfo, &ei_array_length, tvb, *pOffset, 4, "Array length %d too large to process", iLen);
return;
}
*pOffset += 4;
for (i=0; i<iLen; i++)
{
char szNum[20];
g_snprintf(szNum, 20, "[%i]", i);
(*pParserFunction)(subtree, tvb, pinfo, pOffset, szNum);
}
proto_item_set_end(ti, tvb, *pOffset);
}
void parseNodeId(proto_tree *tree, tvbuff_t *tvb, packet_info *pinfo, gint *pOffset, const char *szFieldName)
{
proto_item *ti;
proto_tree *subtree = proto_tree_add_subtree_format(tree, tvb, *pOffset, -1, ett_opcua_nodeid, &ti, "%s: NodeId", szFieldName);
gint iOffset = *pOffset;
guint8 EncodingMask;
EncodingMask = tvb_get_guint8(tvb, iOffset);
proto_tree_add_item(subtree, hf_opcua_nodeid_encodingmask, tvb, iOffset, 1, ENC_LITTLE_ENDIAN);
iOffset++;
switch(EncodingMask)
{
case 0x00: /* two byte node id */
proto_tree_add_item(subtree, hf_opcua_nodeid_numeric, tvb, iOffset, 1, ENC_LITTLE_ENDIAN);
iOffset+=1;
break;
case 0x01: /* four byte node id */
proto_tree_add_item(subtree, hf_opcua_nodeid_nsindex, tvb, iOffset, 1, ENC_LITTLE_ENDIAN);
iOffset+=1;
proto_tree_add_item(subtree, hf_opcua_nodeid_numeric, tvb, iOffset, 2, ENC_LITTLE_ENDIAN);
iOffset+=2;
break;
case 0x02: /* numeric, that does not fit into four bytes */
proto_tree_add_item(subtree, hf_opcua_nodeid_nsindex, tvb, iOffset, 2, ENC_LITTLE_ENDIAN);
iOffset+=2;
proto_tree_add_item(subtree, hf_opcua_nodeid_numeric, tvb, iOffset, 4, ENC_LITTLE_ENDIAN);
iOffset+=4;
break;
case 0x03: /* string */
proto_tree_add_item(subtree, hf_opcua_nodeid_nsindex, tvb, iOffset, 2, ENC_LITTLE_ENDIAN);
iOffset+=2;
parseString(subtree, tvb, pinfo, &iOffset, hf_opcua_nodeid_string);
break;
case 0x04: /* guid */
proto_tree_add_item(subtree, hf_opcua_nodeid_nsindex, tvb, iOffset, 2, ENC_LITTLE_ENDIAN);
iOffset+=2;
parseGuid(subtree, tvb, pinfo, &iOffset, hf_opcua_nodeid_guid);
break;
case 0x05: /* byte string */
proto_tree_add_item(subtree, hf_opcua_nodeid_nsindex, tvb, iOffset, 2, ENC_LITTLE_ENDIAN);
iOffset+=2;
parseByteString(subtree, tvb, pinfo, &iOffset, hf_opcua_nodeid_bytestring);
break;
};
proto_item_set_end(ti, tvb, iOffset);
*pOffset = iOffset;
}
void parseExtensionObject(proto_tree *tree, tvbuff_t *tvb, packet_info *pinfo, gint *pOffset, const char *szFieldName)
{
static const int *extobj_mask[] = {&hf_opcua_extobj_mask_binbodyflag,
&hf_opcua_extobj_mask_xmlbodyflag,
NULL};
gint iOffset = *pOffset;
guint8 EncodingMask;
guint32 TypeId;
proto_tree *extobj_tree;
proto_item *ti;
/* add extension object subtree */
extobj_tree = proto_tree_add_subtree_format(tree, tvb, *pOffset, -1, ett_opcua_extensionobject, &ti, "%s: ExtensionObject", szFieldName);
/* add nodeid subtree */
TypeId = getExtensionObjectType(tvb, &iOffset);
parseExpandedNodeId(extobj_tree, tvb, pinfo, &iOffset, "TypeId");
/* parse encoding mask */
EncodingMask = tvb_get_guint8(tvb, iOffset);
proto_tree_add_bitmask(extobj_tree, tvb, iOffset, hf_opcua_extobj_mask, ett_opcua_extensionobject_encodingmask, extobj_mask, ENC_LITTLE_ENDIAN);
iOffset++;
if (EncodingMask & EXTOBJ_ENCODINGMASK_BINBODY_FLAG) /* has binary body ? */
{
dispatchExtensionObjectType(extobj_tree, tvb, pinfo, &iOffset, TypeId);
}
proto_item_set_end(ti, tvb, iOffset);
*pOffset = iOffset;
}
void parseExpandedNodeId(proto_tree *tree, tvbuff_t *tvb, packet_info *pinfo, gint *pOffset, const char *szFieldName)
{
static const int *expandednodeid_mask[] = {&hf_opcua_nodeid_encodingmask,
&hf_opcua_expandednodeid_mask_serverindex,
&hf_opcua_expandednodeid_mask_namespaceuri,
NULL};
proto_item *ti;
proto_tree *subtree = proto_tree_add_subtree_format(tree, tvb, *pOffset, -1,
ett_opcua_expandednodeid, &ti, "%s: ExpandedNodeId", szFieldName);
gint iOffset = *pOffset;
guint8 EncodingMask;
EncodingMask = tvb_get_guint8(tvb, iOffset);
proto_tree_add_bitmask(subtree, tvb, iOffset, hf_opcua_expandednodeid_mask, ett_opcua_expandednodeid_encodingmask, expandednodeid_mask, ENC_LITTLE_ENDIAN);
iOffset++;
switch(EncodingMask & 0x0F)
{
case 0x00: /* two byte node id */
proto_tree_add_item(subtree, hf_opcua_nodeid_numeric, tvb, iOffset, 1, ENC_LITTLE_ENDIAN);
iOffset+=1;
break;
case 0x01: /* four byte node id */
proto_tree_add_item(subtree, hf_opcua_nodeid_nsindex, tvb, iOffset, 1, ENC_LITTLE_ENDIAN);
iOffset+=1;
proto_tree_add_item(subtree, hf_opcua_nodeid_numeric, tvb, iOffset, 2, ENC_LITTLE_ENDIAN);
iOffset+=2;
break;
case 0x02: /* numeric, that does not fit into four bytes */
proto_tree_add_item(subtree, hf_opcua_nodeid_nsindex, tvb, iOffset, 2, ENC_LITTLE_ENDIAN);
iOffset+=2;
proto_tree_add_item(subtree, hf_opcua_nodeid_numeric, tvb, iOffset, 4, ENC_LITTLE_ENDIAN);
iOffset+=4;
break;
case 0x03: /* string */
proto_tree_add_item(subtree, hf_opcua_nodeid_nsindex, tvb, iOffset, 2, ENC_LITTLE_ENDIAN);
iOffset+=2;
parseString(subtree, tvb, pinfo, &iOffset, hf_opcua_nodeid_string);
break;
case 0x04: /* guid */
proto_tree_add_item(subtree, hf_opcua_nodeid_nsindex, tvb, iOffset, 2, ENC_LITTLE_ENDIAN);
iOffset+=2;
parseGuid(subtree, tvb, pinfo, &iOffset, hf_opcua_nodeid_guid);
break;
case 0x05: /* byte string */
proto_tree_add_item(subtree, hf_opcua_nodeid_nsindex, tvb, iOffset, 2, ENC_LITTLE_ENDIAN);
iOffset+=2;
parseByteString(subtree, tvb, pinfo, &iOffset, hf_opcua_nodeid_bytestring);
break;
};
if (EncodingMask & NODEID_NAMESPACEURIFLAG)
{
parseString(subtree, tvb, pinfo, &iOffset, hf_opcua_NamespaceUri);
}
if (EncodingMask & NODEID_SERVERINDEXFLAG)
{
parseUInt32(subtree, tvb, pinfo, &iOffset, hf_opcua_ServerIndex);
}
proto_item_set_end(ti, tvb, iOffset);
*pOffset = iOffset;
}
guint32 getExtensionObjectType(tvbuff_t *tvb, gint *pOffset)
{
gint iOffset = *pOffset;
guint8 EncodingMask;
guint32 Numeric = 0;
EncodingMask = tvb_get_guint8(tvb, iOffset);
iOffset++;
switch(EncodingMask)
{
case 0x00: /* two byte node id */
Numeric = tvb_get_guint8(tvb, iOffset);
/*iOffset+=1;*/
break;
case 0x01: /* four byte node id */
iOffset+=1;
Numeric = tvb_get_letohs(tvb, iOffset);
break;
case 0x02: /* numeric, that does not fit into four bytes */
iOffset+=4;
Numeric = tvb_get_letohl(tvb, iOffset);
break;
case 0x03: /* string */
case 0x04: /* uri */
case 0x05: /* guid */
case 0x06: /* byte string */
/* NOT USED */
break;
};
return Numeric;
}
/*
* Editor modelines - http://www.wireshark.org/tools/modelines.html
*
* Local variables:
* c-basic-offset: 4
* tab-width: 8
* indent-tabs-mode: nil
* End:
*
* vi: set shiftwidth=4 tabstop=8 expandtab:
* :indentSize=4:tabSize=8:noTabs=true:
*/