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Base64 decoding error (wrong character) when registering nodeset.xml
June 27, 2017
9:02, EEST
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hbrackel
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Good morning,
When registering a custom nodeset with a Java UaServer, the nodeset containing a struct dataType and variable of that type, an error occurs telling that there were incorrect characters in the Base64 sections. Java Code generation worked okay from the same nodeset and a different .NET based server can register the nodeset okay. The nodeset has been generated from UaModeler (latest version)
The Java SDK version is 2.3.2

Do you have any suggestions of how to work around this problem?

Thanks, Hans-Uwe

June 27, 2017
10:54, EEST
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hbrackel
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Some additional information/correction:
1) the error happens when loading the nodeset (addressSpace.loadModel(…)), not when registering it
2) the concrete error is
09:50:35.441 [main] WARN com.prosysopc.ua.ModelParserBase – createModel: Error in ModelParser2.endElement: localName=Value
org.bouncycastle.util.encoders.DecoderException: unable to decode base64 string: invalid characters encountered in base64 data
at org.bouncycastle.util.encoders.Base64.decode(Unknown Source)
at org.opcfoundation.ua.transport.security.BcCryptoProvider.base64Decode(BcCryptoProvider.java:64)
at org.opcfoundation.ua.utils.CryptoUtil.base64Decode(CryptoUtil.java:120)
at org.opcfoundation.ua.encoding.xml.XmlDecoder.getByteString(XmlDecoder.java:474)
at org.opcfoundation.ua.encoding.xml.XmlDecoder.getVariantContents(XmlDecoder.java:2411)
at org.opcfoundation.ua.encoding.xml.XmlDecoder.getVariant(XmlDecoder.java:2282)
at com.prosysopc.ua.ModelParserBase.finalizeValue(ModelParserBase.java:881)
at com.prosysopc.ua.ModelParserBase.endElement(ModelParserBase.java:1467)
at com.prosysopc.ua.ModelParserBase$ModelHandler.endElement(ModelParserBase.java:113)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.endElement(AbstractSAXParser.java:609)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanEndElement(XMLDocumentFragmentScannerImpl.java:1782)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2967)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:602)
at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.next(XMLNSDocumentScannerImpl.java:112)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:505)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:841)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:770)
at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:141)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1213)
at com.prosysopc.ua.ModelParserBase.parseFile(ModelParserBase.java:388)
at com.prosysopc.ua.ModelParserBase.parseFile(ModelParserBase.java:344)
at com.prosysopc.ua.ModelParserBase.parseFile(ModelParserBase.java:414)
at com.prosysopc.ua.server.NodeManagerTable.loadModel(NodeManagerTable.java:2090)
at com.prosysopc.ua.server.NodeManagerTable.loadModel(NodeManagerTable.java:2050)

3) I extracted and based64-decoded the same data without any problems using Base64.getDecoder().decode(base64EncodedText)

June 27, 2017
11:04, EEST
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Bjarne Boström
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Hi,

If possible, can you paste the base64 string in question?

For the 3) it would be nice to be able to use that class, however as it is added in Java 8 and the SDK (and stack) support 6, it cannot be used.

– Bjarne

June 29, 2017
15:26, EEST
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Bjarne Boström
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At least I’m able to load a test model without errors. I would need to see the string giving the error (or entire model would be fine too, you can send it to uajava-support@prosysopc.com) in order to help further. Anyway the XML parsing of structure values was fixed/implemented for custom structure in 2.3.2 (https://downloads.prosysopc.com/opcua/release_notes2.3.2-781.html), I suppose there might still be a bug somewhere there..

Just to be sure, did you also update the stack jar to version 1.02.337.18 in addition to the SDK jar to 2.3.2?

The test model that did pass:

<UANodeSet xmlns:xsi="http://www.w3.org/2001/XMLSche…..&quot; xmlns:uax="http://opcfoundation.org/UA/20…..&quot; xmlns="http://opcfoundation.org/UA/20…..&quot; xmlns:s1="http://yourorganisation.org/ba…..&quot; xmlns:xsd="http://www.w3.org/2001/XMLSche…..t;&gt;
<NamespaceUris>
<Uri>http://yourorganisation.org/ba…..ri&gt;
</NamespaceUris>
<Aliases>
<Alias Alias="Double">i=11</Alias>
<Alias Alias="String">i=12</Alias>
<Alias Alias="ByteString">i=15</Alias>
<Alias Alias="Organizes">i=35</Alias>
<Alias Alias="HasEncoding">i=38</Alias>
<Alias Alias="HasDescription">i=39</Alias>
<Alias Alias="HasTypeDefinition">i=40</Alias>
<Alias Alias="HasSubtype">i=45</Alias>
<Alias Alias="HasProperty">i=46</Alias>
<Alias Alias="HasComponent">i=47</Alias>
<Alias Alias="TestStructure">ns=1;i=3002</Alias>
</Aliases>
<Extensions>
<Extension>
<ModelInfo Tool="UaModeler" Hash="+Ux4guppoubo9KCZYLLcDQ==" Version="1.4.4"/>
</Extension>
</Extensions>
<UADataType NodeId="ns=1;i=3002" BrowseName="1:TestStructure">
<DisplayName>TestStructure</DisplayName>
<References>
<Reference ReferenceType="HasEncoding">ns=1;i=5001</Reference>
<Reference ReferenceType="HasEncoding">ns=1;i=5002</Reference>
<Reference ReferenceType="HasSubtype" IsForward="false">i=22</Reference>
</References>
<Definition Name="1:TestStructure">
<Field DataType="Double" Name="Field1"/>
<Field DataType="Double" Name="Field2"/>
<Field DataType="Double" Name="Field3"/>
</Definition>
</UADataType>
<UAVariable DataType="String" ParentNodeId="ns=1;i=6001" NodeId="ns=1;i=6005" BrowseName="1:TestStructure">
<DisplayName>TestStructure</DisplayName>
<References>
<Reference ReferenceType="HasComponent" IsForward="false">ns=1;i=6001</Reference>
<Reference ReferenceType="HasTypeDefinition">i=69</Reference>
<Reference ReferenceType="HasDescription" IsForward="false">ns=1;i=5001</Reference>
</References>
<Value>
<uax:String>TestStructure</uax:String>
</Value>
</UAVariable>
<UAVariable DataType="String" ParentNodeId="ns=1;i=6003" NodeId="ns=1;i=6006" BrowseName="1:TestStructure">
<DisplayName>TestStructure</DisplayName>
<References>
<Reference ReferenceType="HasComponent" IsForward="false">ns=1;i=6003</Reference>
<Reference ReferenceType="HasTypeDefinition">i=69</Reference>
<Reference ReferenceType="HasDescription" IsForward="false">ns=1;i=5002</Reference>
</References>
<Value>
<uax:String>//xs:element[@name=’TestStructure’]</uax:String>
</Value>
</UAVariable>
<UAVariable DataType="ByteString" NodeId="ns=1;i=6001" BrowseName="1:TypeDictionary">
<DisplayName>TypeDictionary</DisplayName>
<Description>Collects the data type descriptions of http://yourorganisation.org/base64test/</Description&gt;
<References>
<Reference ReferenceType="HasProperty">ns=1;i=6002</Reference>
<Reference ReferenceType="HasTypeDefinition">i=72</Reference>
<Reference ReferenceType="HasComponent">ns=1;i=6005</Reference>
<Reference ReferenceType="HasComponent" IsForward="false">i=93</Reference>
</References>
<Value>
<uax:ByteString>PG9wYzpUeXBlRGljdGlvbmFyeSB4bWxuczp4c2k9Imh0dHA6Ly93d3cudzMub3JnLzIwMDEvWE1MU2NoZ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</uax:ByteString>
</Value>
</UAVariable>
<UAVariable DataType="String" ParentNodeId="ns=1;i=6001" NodeId="ns=1;i=6002" BrowseName="NamespaceUri">
<DisplayName>NamespaceUri</DisplayName>
<References>
<Reference ReferenceType="HasTypeDefinition">i=68</Reference>
<Reference ReferenceType="HasProperty" IsForward="false">ns=1;i=6001</Reference>
</References>
<Value>
<uax:String>http://yourorganisation.org/base64test/</uax:String&gt;
</Value>
</UAVariable>
<UAVariable DataType="ByteString" NodeId="ns=1;i=6003" BrowseName="1:TypeDictionary">
<DisplayName>TypeDictionary</DisplayName>
<Description>Collects the data type descriptions of http://yourorganisation.org/base64test/</Description&gt;
<References>
<Reference ReferenceType="HasProperty">ns=1;i=6004</Reference>
<Reference ReferenceType="HasTypeDefinition">i=72</Reference>
<Reference ReferenceType="HasComponent">ns=1;i=6006</Reference>
<Reference ReferenceType="HasComponent" IsForward="false">i=92</Reference>
</References>
<Value>
<uax:ByteString>PHhzOnNjaGVtYSBlbGVtZW50Rm9ybURlZmF1bHQ9InF1YWxpZmllZCIgdGFyZ2V0TmFtZXNwYWNlPSJod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</uax:ByteString>
</Value>
</UAVariable>
<UAVariable DataType="String" ParentNodeId="ns=1;i=6003" NodeId="ns=1;i=6004" BrowseName="NamespaceUri">
<DisplayName>NamespaceUri</DisplayName>
<References>
<Reference ReferenceType="HasTypeDefinition">i=68</Reference>
<Reference ReferenceType="HasProperty" IsForward="false">ns=1;i=6003</Reference>
</References>
<Value>
<uax:String>http://yourorganisation.org/base64test/Types.xsd</uax:String&gt;
</Value>
</UAVariable>
<UAVariableType DataType="TestStructure" ValueRank="-2" NodeId="ns=1;i=2002" BrowseName="1:TestStructureVariableType">
<DisplayName>TestStructureVariableType</DisplayName>
<References>
<Reference ReferenceType="HasSubtype" IsForward="false">i=63</Reference>
</References>
<Value>
<uax:ListOfExtensionObject>
<uax:ExtensionObject>
<uax:TypeId>
<uax:Identifier>ns=1;i=5002</uax:Identifier>
</uax:TypeId>
<uax:Body>
<TestStructure xmlns="http://yourorganisation.org/base64test/Types.xsd"&gt;
<Field1>0</Field1>
<Field2>0</Field2>
<Field3>0</Field3>
</TestStructure>
</uax:Body>
</uax:ExtensionObject>
</uax:ListOfExtensionObject>
</Value>
</UAVariableType>
<UAVariable DataType="TestStructure" NodeId="ns=1;i=6008" BrowseName="1:TestStructureVariableInstance" UserAccessLevel="3" AccessLevel="3">
<DisplayName>TestStructureVariableInstance</DisplayName>
<References>
<Reference ReferenceType="Organizes" IsForward="false">i=85</Reference>
<Reference ReferenceType="HasTypeDefinition">ns=1;i=2002</Reference>
</References>
<Value>
<uax:ExtensionObject>
<uax:TypeId>
<uax:Identifier>ns=1;i=5002</uax:Identifier>
</uax:TypeId>
<uax:Body>
<TestStructure xmlns="http://yourorganisation.org/base64test/Types.xsd"&gt;
<Field1>0</Field1>
<Field2>0</Field2>
<Field3>0</Field3>
</TestStructure>
</uax:Body>
</uax:ExtensionObject>
</Value>
</UAVariable>
<UAObject SymbolicName="DefaultBinary" NodeId="ns=1;i=5001" BrowseName="Default Binary">
<DisplayName>Default Binary</DisplayName>
<References>
<Reference ReferenceType="HasEncoding" IsForward="false">ns=1;i=3002</Reference>
<Reference ReferenceType="HasTypeDefinition">i=76</Reference>
<Reference ReferenceType="HasDescription">ns=1;i=6005</Reference>
</References>
</UAObject>
<UAObject SymbolicName="DefaultXml" NodeId="ns=1;i=5002" BrowseName="Default XML">
<DisplayName>Default XML</DisplayName>
<References>
<Reference ReferenceType="HasEncoding" IsForward="false">ns=1;i=3002</Reference>
<Reference ReferenceType="HasTypeDefinition">i=76</Reference>
<Reference ReferenceType="HasDescription">ns=1;i=6006</Reference>
</References>
</UAObject>
</UANodeSet>
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