int parseOpenSecureChannel(proto_tree *tree, tvbuff_t *tvb, gint *pOffset)
{
proto_item *ti;
proto_tree *encobj_tree;
proto_tree *nodeid_tree;
int ServiceId = 0;
proto_tree_add_item(tree, hf_opcua_transport_type, tvb, *pOffset, 3, ENC_ASCII|ENC_NA); *pOffset+=3;
proto_tree_add_item(tree, hf_opcua_transport_chunk, tvb, *pOffset, 1, ENC_ASCII|ENC_NA); *pOffset+=1;
proto_tree_add_item(tree, hf_opcua_transport_size, tvb, *pOffset, 4, ENC_LITTLE_ENDIAN); *pOffset+=4;
proto_tree_add_item(tree, hf_opcua_transport_scid, tvb, *pOffset, 4, ENC_LITTLE_ENDIAN); *pOffset+=4;
parseString(tree, tvb, pOffset, hf_opcua_transport_spu);
parseByteString(tree, tvb, pOffset, hf_opcua_transport_scert);
parseByteString(tree, tvb, pOffset, hf_opcua_transport_rcthumb);
proto_tree_add_item(tree, hf_opcua_transport_seq, tvb, *pOffset, 4, ENC_LITTLE_ENDIAN); *pOffset+=4;
proto_tree_add_item(tree, hf_opcua_transport_rqid, tvb, *pOffset, 4, ENC_LITTLE_ENDIAN); *pOffset+=4;
/* add encodeable object subtree */
ti = proto_tree_add_text(tree, tvb, 0, -1, "Message : Encodeable Object");
encobj_tree = proto_item_add_subtree(ti, ett_opcua_extensionobject);
/* add nodeid subtree */
ti = proto_tree_add_text(encobj_tree, tvb, 0, -1, "TypeId : ExpandedNodeId");
nodeid_tree = proto_item_add_subtree(ti, ett_opcua_nodeid);
ServiceId = parseServiceNodeId(nodeid_tree, tvb, pOffset);
dispatchService(encobj_tree, tvb, pOffset, ServiceId);
return -1;
}
void parseExpandedNodeId(proto_tree *tree, tvbuff_t *tvb, gint *pOffset, const char *szFieldName)
{
proto_item *ti = proto_tree_add_text(tree, tvb, *pOffset, -1, "%s: ExpandedNodeId", szFieldName);
proto_tree *subtree = proto_item_add_subtree(ti, ett_opcua_nodeid);
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_nsid, 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_nsid, 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_nsid, tvb, iOffset, 2, ENC_LITTLE_ENDIAN);
iOffset+=2;
parseString(subtree, tvb, &iOffset, hf_opcua_String);
break;
case 0x04: /* guid */
proto_tree_add_item(subtree, hf_opcua_nodeid_nsid, tvb, iOffset, 2, ENC_LITTLE_ENDIAN);
iOffset+=2;
parseGuid(subtree, tvb, &iOffset, hf_opcua_Guid);
break;
case 0x05: /* byte string */
proto_tree_add_item(subtree, hf_opcua_nodeid_nsid, tvb, iOffset, 2, ENC_LITTLE_ENDIAN);
iOffset+=2;
parseByteString(subtree, tvb, &iOffset, hf_opcua_ByteString);
break;
};
if (EncodingMask & NODEID_URIMASK)
{
parseString(subtree, tvb, &iOffset, hf_opcua_Uri);
}
if (EncodingMask & NODEID_SERVERINDEXFLAG)
{
parseUInt32(subtree, tvb, &iOffset, hf_opcua_ServerIndex);
}
proto_item_set_end(ti, tvb, iOffset);
*pOffset = iOffset;
}
void parseVariant(proto_tree *tree, tvbuff_t *tvb, gint *pOffset, const char *szFieldName)
{
proto_item *ti = proto_tree_add_text(tree, tvb, *pOffset, -1, "%s: Variant", szFieldName);
proto_tree *subtree = proto_item_add_subtree(ti, ett_opcua_variant);
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, &iOffset, hf_opcua_Boolean, parseBoolean); break;
case OpcUaType_SByte: parseArraySimple(subtree, tvb, &iOffset, hf_opcua_SByte, parseSByte); break;
case OpcUaType_Byte: parseArraySimple(subtree, tvb, &iOffset, hf_opcua_Byte, parseByte); break;
case OpcUaType_Int16: parseArraySimple(subtree, tvb, &iOffset, hf_opcua_Int16, parseInt16); break;
case OpcUaType_UInt16: parseArraySimple(subtree, tvb, &iOffset, hf_opcua_UInt16, parseUInt16); break;
case OpcUaType_Int32: parseArraySimple(subtree, tvb, &iOffset, hf_opcua_Int32, parseInt32); break;
case OpcUaType_UInt32: parseArraySimple(subtree, tvb, &iOffset, hf_opcua_UInt32, parseUInt32); break;
case OpcUaType_Int64: parseArraySimple(subtree, tvb, &iOffset, hf_opcua_Int64, parseInt64); break;
case OpcUaType_UInt64: parseArraySimple(subtree, tvb, &iOffset, hf_opcua_UInt64, parseUInt64); break;
case OpcUaType_Float: parseArraySimple(subtree, tvb, &iOffset, hf_opcua_Float, parseFloat); break;
case OpcUaType_Double: parseArraySimple(subtree, tvb, &iOffset, hf_opcua_Double, parseDouble); break;
case OpcUaType_String: parseArraySimple(subtree, tvb, &iOffset, hf_opcua_String, parseString); break;
case OpcUaType_DateTime: parseArraySimple(subtree, tvb, &iOffset, hf_opcua_DateTime, parseDateTime); break;
case OpcUaType_Guid: parseArraySimple(subtree, tvb, &iOffset, hf_opcua_Guid, parseGuid); break;
case OpcUaType_ByteString: parseArraySimple(subtree, tvb, &iOffset, hf_opcua_ByteString, parseByteString); break;
case OpcUaType_XmlElement: parseArraySimple(subtree, tvb, &iOffset, hf_opcua_XmlElement, parseXmlElement); break;
case OpcUaType_NodeId: parseArrayComplex(subtree, tvb, &iOffset, "NodeId", parseNodeId); break;
case OpcUaType_ExpandedNodeId: parseArrayComplex(subtree, tvb, &iOffset, "ExpandedNodeId", parseExpandedNodeId); break;
case OpcUaType_StatusCode: parseArraySimple(subtree, tvb, &iOffset, hf_opcua_StatusCode, parseStatusCode); break;
case OpcUaType_DiagnosticInfo: parseArrayComplex(subtree, tvb, &iOffset, "DiagnosticInfo", parseDiagnosticInfo); break;
case OpcUaType_QualifiedName: parseArrayComplex(subtree, tvb, &iOffset, "QualifiedName", parseQualifiedName); break;
case OpcUaType_LocalizedText: parseArrayComplex(subtree, tvb, &iOffset, "LocalizedText", parseLocalizedText); break;
case OpcUaType_ExtensionObject: parseArrayComplex(subtree, tvb, &iOffset, "ExtensionObject", parseExtensionObject); break;
case OpcUaType_DataValue: parseArrayComplex(subtree, tvb, &iOffset, "DataValue", parseDataValue); break;
case OpcUaType_Variant: parseArrayComplex(subtree, tvb, &iOffset, "Variant", parseVariant); break;
}
if (EncodingMask & VARIANT_ARRAYDIMENSIONS)
{
proto_item *ti_2 = proto_tree_add_text(subtree, tvb, iOffset, -1, "ArrayDimensions");
proto_tree *subtree_2 = proto_item_add_subtree(ti_2, ett_opcua_array);
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_item *pi;
pi = proto_tree_add_text(subtree_2, tvb, iOffset, 4, "ArrayDimensions length %d too large to process", ArrayDimensions);
PROTO_ITEM_SET_GENERATED(pi);
return;
}
iOffset += 4;
for (i=0; i<ArrayDimensions; i++)
{
parseInt32(subtree_2, tvb, &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, &iOffset, hf_opcua_Boolean); break;
case OpcUaType_SByte: parseSByte(subtree, tvb, &iOffset, hf_opcua_SByte); break;
case OpcUaType_Byte: parseByte(subtree, tvb, &iOffset, hf_opcua_Byte); break;
case OpcUaType_Int16: parseInt16(subtree, tvb, &iOffset, hf_opcua_Int16); break;
case OpcUaType_UInt16: parseUInt16(subtree, tvb, &iOffset, hf_opcua_UInt16); break;
case OpcUaType_Int32: parseInt32(subtree, tvb, &iOffset, hf_opcua_Int32); break;
case OpcUaType_UInt32: parseUInt32(subtree, tvb, &iOffset, hf_opcua_UInt32); break;
case OpcUaType_Int64: parseInt64(subtree, tvb, &iOffset, hf_opcua_Int64); break;
case OpcUaType_UInt64: parseUInt64(subtree, tvb, &iOffset, hf_opcua_UInt64); break;
case OpcUaType_Float: parseFloat(subtree, tvb, &iOffset, hf_opcua_Float); break;
case OpcUaType_Double: parseDouble(subtree, tvb, &iOffset, hf_opcua_Double); break;
case OpcUaType_String: parseString(subtree, tvb, &iOffset, hf_opcua_String); break;
case OpcUaType_DateTime: parseDateTime(subtree, tvb, &iOffset, hf_opcua_DateTime); break;
case OpcUaType_Guid: parseGuid(subtree, tvb, &iOffset, hf_opcua_Guid); break;
case OpcUaType_ByteString: parseByteString(subtree, tvb, &iOffset, hf_opcua_ByteString); break;
case OpcUaType_XmlElement: parseXmlElement(subtree, tvb, &iOffset, hf_opcua_XmlElement); break;
case OpcUaType_NodeId: parseNodeId(subtree, tvb, &iOffset, "Value"); break;
case OpcUaType_ExpandedNodeId: parseExpandedNodeId(subtree, tvb, &iOffset, "Value"); break;
case OpcUaType_StatusCode: parseStatusCode(subtree, tvb, &iOffset, hf_opcua_StatusCode); break;
case OpcUaType_DiagnosticInfo: parseDiagnosticInfo(subtree, tvb, &iOffset, "Value"); break;
case OpcUaType_QualifiedName: parseQualifiedName(subtree, tvb, &iOffset, "Value"); break;
case OpcUaType_LocalizedText: parseLocalizedText(subtree, tvb, &iOffset, "Value"); break;
case OpcUaType_ExtensionObject: parseExtensionObject(subtree, tvb, &iOffset, "Value"); break;
case OpcUaType_DataValue: parseDataValue(subtree, tvb, &iOffset, "Value"); break;
case OpcUaType_Variant: parseVariant(subtree, tvb, &iOffset, "Value"); break;
}
}
proto_item_set_end(ti, tvb, iOffset);
*pOffset = iOffset;
}
void parseXmlElement(proto_tree *tree, tvbuff_t *tvb, gint *pOffset, int hfIndex)
{
parseByteString(tree, tvb, pOffset, hfIndex);
}
