/// <summary>
/// Creates an instance of a TargetMatchBase with the values specified.
/// </summary>
/// <param name="matchId">The match id</param>
/// <param name="attributeValue">The attribute value instance.</param>
/// <param name="attributeReference">An attribute reference instance.</param>
/// <param name="schemaVersion">The version of the schema that was used to validate.</param>
protected TargetMatchBaseReadWrite( string matchId, AttributeValueElementReadWrite attributeValue, AttributeReferenceBase attributeReference, XacmlVersion schemaVersion )
: base( XacmlSchema.Policy, schemaVersion )
{
_id = matchId;
_attributeValue = attributeValue;
_attributeReference = attributeReference;
}
/// <summary>
/// Creates an instance of a TargetMatchBase with the values specified.
/// </summary>
/// <param name="matchId">The match id</param>
/// <param name="attributeValue">The attribute value instance.</param>
/// <param name="attributeReference">An attribute reference instance.</param>
/// <param name="schemaVersion">The version of the schema that was used to validate.</param>
protected TargetMatchBaseReadWrite(string matchId, AttributeValueElementReadWrite attributeValue, AttributeReferenceBase attributeReference, XacmlVersion schemaVersion)
: base(XacmlSchema.Policy, schemaVersion)
{
_id = matchId;
_attributeValue = attributeValue;
_attributeReference = attributeReference;
}
private void CreateAttributeValue(object sender, EventArgs args)
{
pol.AttributeValueElementReadWrite attr = new pol.AttributeValueElementReadWrite(InternalDataTypes.XsdString, "TODO: Add content", XacmlVersion.Version11);
AttributeValue node = new AttributeValue(attr);
tvwCondition.Nodes.Add(node);
_condition.Arguments.Add(attr);
}
private void CreateAttributeValueFromFunction(object sender, EventArgs args)
{
FunctionExecution func = (FunctionExecution)tvwCondition.SelectedNode;
pol.ApplyBaseReadWrite parentApply = func.ApplyBaseDefinition;
pol.AttributeValueElementReadWrite attr = new pol.AttributeValueElementReadWrite(InternalDataTypes.XsdString, "TODO: Add content", XacmlVersion.Version11);
AttributeValue node = new AttributeValue(attr);
func.Nodes.Add(node);
parentApply.Arguments.Add(attr);
}
/// <summary>
/// Creates an instance of the TargetMatchBase class using the XmlReader specified, the name of the node that defines
/// the match (the name of the node changes depending on the target item that defines it) and the attribute
/// designator node name which also changes depending on the target item that defines the match.
/// </summary>
/// <param name="reader">The XmlReader positioned at the "matchNodeName" node.</param>
/// <param name="matchNodeName">The name of the match node for this target item.</param>
/// <param name="attributeDesignatorNode">The name of the attribute designator node for this target item.</param>
/// <param name="schemaVersion">The version of the schema that was used to validate.</param>
protected TargetMatchBaseReadWrite(XmlReader reader, string matchNodeName, string attributeDesignatorNode, XacmlVersion schemaVersion)
: base(XacmlSchema.Policy, schemaVersion)
{
if (reader == null)
{
throw new ArgumentNullException("reader");
}
if (reader.LocalName == matchNodeName && ValidateSchema(reader, schemaVersion))
{
_id = reader.GetAttribute(MatchElement.MatchId);
while (reader.Read())
{
if (reader.LocalName == PolicySchema1.AttributeValueElement.AttributeValue &&
ValidateSchema(reader, schemaVersion) &&
reader.NodeType != XmlNodeType.EndElement)
{
_attributeValue = new AttributeValueElementReadWrite(reader, schemaVersion);
}
else if (reader.LocalName == attributeDesignatorNode &&
ValidateSchema(reader, schemaVersion) &&
reader.NodeType != XmlNodeType.EndElement)
{
_attributeReference = CreateAttributeDesignator(reader);
}
else if (reader.LocalName == PolicySchema1.AttributeSelectorElement.AttributeSelector &&
ValidateSchema(reader, schemaVersion) &&
reader.NodeType != XmlNodeType.EndElement)
{
_attributeReference = new AttributeSelectorElement(reader, schemaVersion);
}
else if (reader.LocalName == matchNodeName &&
reader.NodeType == XmlNodeType.EndElement)
{
break;
}
}
}
else
{
throw new Exception(Resource.ResourceManager[Resource.MessageKey.exc_invalid_node_name, reader.LocalName]);
}
}
/// <summary>
/// Creates an instance of the ResourceMatch class using the specified arguments.
/// </summary>
/// <param name="matchId">The function id for this match.</param>
/// <param name="attributeValue">The attribute value to use as the first parameter to the function.</param>
/// <param name="attributeReference">The attribute reference in the context document.</param>
/// <param name="version">The version of the schema that was used to validate.</param>
public ResourceMatchElementReadWrite(string matchId, AttributeValueElementReadWrite attributeValue, AttributeReferenceBase attributeReference, XacmlVersion version) :
base(matchId, attributeValue, attributeReference, version)
{
}
/// <summary>
/// Evaluates the variable into a value.
/// </summary>
/// <param name="context">The contex of the evaluation.</param>
/// <returns>The value of the function.</returns>
public EvaluationValue Evaluate(EvaluationContext context)
{
if (context == null)
{
throw new ArgumentNullException("context");
}
context.Trace("Evaluating variable");
context.AddIndent();
try
{
if (_variableDefinition.Expression is pol.ApplyElement)
{
context.Trace("Apply within condition.");
// There is a nested apply un this policy a new Apply will be created and also
// evaluated. It's return value will be used as the processed argument.
Apply _childApply = new Apply((pol.ApplyElement)_variableDefinition.Expression);
// Evaluate the Apply
_value = _childApply.Evaluate(context);
context.TraceContextValues();
return(_value);
}
else if (_variableDefinition.Expression is pol.FunctionElement)
{
throw new NotImplementedException("FunctionElement"); //TODO:
}
else if (_variableDefinition.Expression is pol.VariableReferenceElement)
{
pol.VariableReferenceElement variableRef = _variableDefinition.Expression as pol.VariableReferenceElement;
VariableDefinition variableDef = context.CurrentPolicy.VariableDefinition[variableRef.VariableId] as VariableDefinition;
context.TraceContextValues();
if (!variableDef.IsEvaluated)
{
return(variableDef.Evaluate(context));
}
else
{
return(variableDef.Value);
}
}
else if (_variableDefinition.Expression is pol.AttributeValueElementReadWrite)
{
// The AttributeValue does not need to be processed
context.Trace("Attribute value {0}", _variableDefinition.Expression.ToString());
pol.AttributeValueElementReadWrite att = (pol.AttributeValueElementReadWrite)_variableDefinition.Expression;
pol.AttributeValueElement attributeValue = new pol.AttributeValueElement(att.DataType, att.Contents, att.SchemaVersion);
_value = new EvaluationValue(
attributeValue.GetTypedValue(attributeValue.GetType(context), 0),
attributeValue.GetType(context));
return(_value);
}
else if (_variableDefinition.Expression is pol.AttributeDesignatorBase)
{
// Resolve the AttributeDesignator using the EvaluationEngine public methods.
context.Trace("Processing attribute designator: {0}", _variableDefinition.Expression.ToString());
pol.AttributeDesignatorBase attrDes = (pol.AttributeDesignatorBase)_variableDefinition.Expression;
BagValue bag = EvaluationEngine.Resolve(context, attrDes);
// If the attribute was not resolved by the EvaluationEngine search the
// attribute in the context document, also using the EvaluationEngine public
// methods.
if (bag.BagSize == 0)
{
if (_variableDefinition.Expression is pol.SubjectAttributeDesignatorElement)
{
ctx.AttributeElement attrib = EvaluationEngine.GetAttribute(context, attrDes);
if (attrib != null)
{
context.Trace("Adding subject attribute designator: {0}", attrib.ToString());
bag.Add(attrib);
}
}
else if (_variableDefinition.Expression is pol.ResourceAttributeDesignatorElement)
{
ctx.AttributeElement attrib = EvaluationEngine.GetAttribute(context, attrDes);
if (attrib != null)
{
context.Trace("Adding resource attribute designator {0}", attrib.ToString());
bag.Add(attrib);
}
}
else if (_variableDefinition.Expression is pol.ActionAttributeDesignatorElement)
{
ctx.AttributeElement attrib = EvaluationEngine.GetAttribute(context, attrDes);
if (attrib != null)
{
context.Trace("Adding action attribute designator {0}", attrib.ToString());
bag.Add(attrib);
}
}
else if (_variableDefinition.Expression is pol.EnvironmentAttributeDesignatorElement)
{
ctx.AttributeElement attrib = EvaluationEngine.GetAttribute(context, attrDes);
if (attrib != null)
{
context.Trace("Adding environment attribute designator {0}", attrib.ToString());
bag.Add(attrib);
}
}
}
// If the argument was not found and the attribute must be present this is
// a MissingAttribute situation so set the flag. Otherwise add the attribute
// to the processed arguments.
if (bag.BagSize == 0 && attrDes.MustBePresent)
{
context.Trace("Attribute is missing");
context.IsMissingAttribute = true;
context.AddMissingAttribute(attrDes);
_value = EvaluationValue.Indeterminate;
}
else
{
_value = new EvaluationValue(bag, bag.GetType(context));
}
return(_value);
}
else if (_variableDefinition.Expression is pol.AttributeSelectorElement)
{
// Resolve the XPath query using the EvaluationEngine public methods.
context.Trace("Attribute selector");
try
{
pol.AttributeSelectorElement attributeSelector = (pol.AttributeSelectorElement)_variableDefinition.Expression;
BagValue bag = EvaluationEngine.Resolve(context, attributeSelector);
if (bag.Elements.Count == 0 && attributeSelector.MustBePresent)
{
context.Trace("Attribute is missing");
context.IsMissingAttribute = true;
context.AddMissingAttribute(attributeSelector);
_value = EvaluationValue.Indeterminate;
}
else
{
_value = new EvaluationValue(bag, bag.GetType(context));
}
}
catch (EvaluationException e)
{
context.Trace("ERR: {0}", e.Message);
context.ProcessingError = true;
_value = EvaluationValue.Indeterminate;
}
return(_value);
}
throw new NotSupportedException("internal error");
}
finally
{
_isEvaluated = true;
context.RemoveIndent();
}
}
private void CreateAttributeValue( object sender, EventArgs args )
{
pol.AttributeValueElementReadWrite attr = new pol.AttributeValueElementReadWrite( InternalDataTypes.XsdString, "TODO: Add content", XacmlVersion.Version11 );
AttributeValue node = new AttributeValue( attr );
tvwCondition.Nodes.Add( node );
_condition.Arguments.Add( attr );
}
private void CreateAttributeValueFromFunction( object sender, EventArgs args )
{
FunctionExecution func = (FunctionExecution)tvwCondition.SelectedNode;
pol.ApplyBaseReadWrite parentApply = func.ApplyBaseDefinition;
pol.AttributeValueElementReadWrite attr = new pol.AttributeValueElementReadWrite( InternalDataTypes.XsdString, "TODO: Add content", XacmlVersion.Version11 );
AttributeValue node = new AttributeValue( attr );
func.Nodes.Add( node );
parentApply.Arguments.Add( attr );
}
/// <summary>
/// Creates an instance of the TargetMatchBase class using the XmlReader specified, the name of the node that defines
/// the match (the name of the node changes depending on the target item that defines it) and the attribute
/// designator node name which also changes depending on the target item that defines the match.
/// </summary>
/// <param name="reader">The XmlReader positioned at the "matchNodeName" node.</param>
/// <param name="matchNodeName">The name of the match node for this target item.</param>
/// <param name="attributeDesignatorNode">The name of the attribute designator node for this target item.</param>
/// <param name="schemaVersion">The version of the schema that was used to validate.</param>
protected TargetMatchBaseReadWrite( XmlReader reader, string matchNodeName, string attributeDesignatorNode, XacmlVersion schemaVersion )
: base( XacmlSchema.Policy, schemaVersion )
{
if (reader == null) throw new ArgumentNullException("reader");
if( reader.LocalName == matchNodeName && ValidateSchema( reader, schemaVersion ) )
{
_id = reader.GetAttribute( MatchElement.MatchId );
while( reader.Read() )
{
if( reader.LocalName == PolicySchema1.AttributeValueElement.AttributeValue &&
ValidateSchema( reader, schemaVersion ) &&
reader.NodeType != XmlNodeType.EndElement )
{
_attributeValue = new AttributeValueElementReadWrite( reader, schemaVersion );
}
else if( reader.LocalName == attributeDesignatorNode &&
ValidateSchema( reader, schemaVersion ) &&
reader.NodeType != XmlNodeType.EndElement )
{
_attributeReference = CreateAttributeDesignator( reader );
}
else if( reader.LocalName == PolicySchema1.AttributeSelectorElement.AttributeSelector &&
ValidateSchema( reader, schemaVersion ) &&
reader.NodeType != XmlNodeType.EndElement )
{
_attributeReference = new AttributeSelectorElement( reader, schemaVersion );
}
else if( reader.LocalName == matchNodeName &&
reader.NodeType == XmlNodeType.EndElement )
{
break;
}
}
}
else
{
throw new Exception( Resource.ResourceManager[ Resource.MessageKey.exc_invalid_node_name, reader.LocalName ] );
}
}
/// <summary>
/// Creates an instance of a TargetMatchBase with the values specified.
/// </summary>
/// <param name="matchId">The match id</param>
/// <param name="attributeValue">The attribute value instance.</param>
/// <param name="attributeReference">An attribute reference instance.</param>
/// <param name="schemaVersion">The version of the schema that was used to validate.</param>
protected TargetMatchBase(string matchId, AttributeValueElementReadWrite attributeValue, AttributeReferenceBase attributeReference, XacmlVersion schemaVersion)
: base(matchId, attributeValue, attributeReference, schemaVersion)
{
}
/// <summary>
/// Creates an instance of the EnvironmentMatch class using the specified arguments.
/// </summary>
/// <param name="matchId">The function id for this match.</param>
/// <param name="attributeValue">The attribute value to use as the first parameter to the function.</param>
/// <param name="attributeReference">The attribute reference in the context document.</param>
/// <param name="version">The version of the schema that was used to validate.</param>
public EnvironmentMatchElementReadWrite( string matchId, AttributeValueElementReadWrite attributeValue, AttributeReferenceBase attributeReference, XacmlVersion version ) :
base( matchId, attributeValue, attributeReference, version )
{
}
/// <summary>
///
/// </summary>
/// <param name="attributeValue"></param>
public AttributeValue( pol.AttributeValueElementReadWrite attributeValue )
{
_attributeValue = attributeValue;
this.Text = "[" + attributeValue.DataType + "] " + attributeValue.Contents;
}
/// <summary>
/// Creates an instance of the EnvironmentMatch class using the specified arguments.
/// </summary>
/// <param name="matchId">The function id for this match.</param>
/// <param name="attributeValue">The attribute value to use as the first parameter to the function.</param>
/// <param name="attributeReference">The attribute reference in the context document.</param>
/// <param name="version">The version of the schema that was used to validate.</param>
public EnvironmentMatchElement(string matchId, AttributeValueElementReadWrite attributeValue, AttributeReferenceBase attributeReference, XacmlVersion version) :
base(matchId, attributeValue, attributeReference, version)
{
}
/// <summary>
/// Creates an instance of a TargetMatchBase with the values specified.
/// </summary>
/// <param name="matchId">The match id</param>
/// <param name="attributeValue">The attribute value instance.</param>
/// <param name="attributeReference">An attribute reference instance.</param>
/// <param name="schemaVersion">The version of the schema that was used to validate.</param>
protected TargetMatchBase( string matchId, AttributeValueElementReadWrite attributeValue, AttributeReferenceBase attributeReference, XacmlVersion schemaVersion )
: base( matchId, attributeValue, attributeReference, schemaVersion )
{
}
/// <summary>
/// Creates an instance of the ResourceMatch class using the specified arguments.
/// </summary>
/// <param name="matchId">The function id for this match.</param>
/// <param name="attributeValue">The attribute value to use as the first parameter to the function.</param>
/// <param name="attributeReference">The attribute reference in the context document.</param>
/// <param name="version">The version of the schema that was used to validate.</param>
public ResourceMatchElement( string matchId, AttributeValueElementReadWrite attributeValue, AttributeReferenceBase attributeReference, XacmlVersion version ) :
base( matchId, attributeValue, attributeReference, version )
{
}
/// <summary>
///
/// </summary>
/// <param name="attributeValue"></param>
public AttributeValue(pol.AttributeValueElementReadWrite attributeValue)
{
_attributeValue = attributeValue;
this.Text = "[" + attributeValue.DataType + "] " + attributeValue.Contents;
}
