private void AnalyzeNodeForXsltSettings(SyntaxNodeAnalysisContext context)
{
SyntaxNode node = context.Node;
SemanticModel model = context.SemanticModel;
SyntaxNode lhs = _syntaxNodeHelper.GetAssignmentLeftNode(node);
SyntaxNode rhs = _syntaxNodeHelper.GetAssignmentRightNode(node);
if (lhs == null || rhs == null)
{
return;
}
ISymbol lhsSymbol = SyntaxNodeHelper.GetSymbol(lhs, model);
if (lhsSymbol == null)
{
return;
}
IMethodSymbol rhsMethodSymbol = _syntaxNodeHelper.GetCalleeMethodSymbol(rhs, model);
IPropertySymbol rhsPropertySymbol = SyntaxNodeHelper.GetCalleePropertySymbol(rhs, model);
if (SecurityDiagnosticHelpers.IsXsltSettingsCtor(rhsMethodSymbol, _xmlTypes))
{
XsltSettingsEnvironment env = new XsltSettingsEnvironment();
_xsltSettingsEnvironments[lhsSymbol] = env;
env.XsltSettingsSymbol = lhsSymbol;
env.XsltSettingsDefinitionSymbol = rhsMethodSymbol;
env.XsltSettingsDefinition = node;
env.EnclosingConstructSymbol = _syntaxNodeHelper.GetEnclosingConstructSymbol(node, model);
//default both properties are disbled
env.IsDocumentFunctionDisabled = true;
env.IsScriptDisabled = true;
// XsltSettings Constructor (Boolean, Boolean)
if (rhsMethodSymbol.Parameters.Any())
{
IEnumerable <SyntaxNode> argumentExpressionNodes = _syntaxNodeHelper.GetObjectCreationArgumentExpressionNodes(rhs);
env.IsDocumentFunctionDisabled = SyntaxNodeHelper.NodeHasConstantValueBoolFalse(argumentExpressionNodes.ElementAt(0), model);
env.IsScriptDisabled = SyntaxNodeHelper.NodeHasConstantValueBoolFalse(argumentExpressionNodes.ElementAt(1), model);
}
foreach (SyntaxNode arg in _syntaxNodeHelper.GetObjectInitializerExpressionNodes(rhs))
{
SyntaxNode argLhs = _syntaxNodeHelper.GetAssignmentLeftNode(arg);
SyntaxNode argRhs = _syntaxNodeHelper.GetAssignmentRightNode(arg);
ISymbol argLhsSymbol = SyntaxNodeHelper.GetSymbol(argLhs, model);
// anything other than a constant false is treated as true
if (SecurityDiagnosticHelpers.IsXsltSettingsEnableDocumentFunctionProperty(argLhsSymbol as IPropertySymbol, _xmlTypes))
{
env.IsDocumentFunctionDisabled = SyntaxNodeHelper.NodeHasConstantValueBoolFalse(argRhs, model);
}
else if (SecurityDiagnosticHelpers.IsXsltSettingsEnableScriptProperty(argLhsSymbol as IPropertySymbol, _xmlTypes))
{
env.IsScriptDisabled = SyntaxNodeHelper.NodeHasConstantValueBoolFalse(argRhs, model);
}
}
}
else if (SecurityDiagnosticHelpers.IsXsltSettingsDefaultProperty(rhsPropertySymbol, _xmlTypes))
{
XsltSettingsEnvironment env = new XsltSettingsEnvironment();
_xsltSettingsEnvironments[lhsSymbol] = env;
env.XsltSettingsSymbol = lhsSymbol;
env.XsltSettingsDefinitionSymbol = rhsPropertySymbol;
env.XsltSettingsDefinition = node;
env.EnclosingConstructSymbol = _syntaxNodeHelper.GetEnclosingConstructSymbol(node, model);
env.IsDocumentFunctionDisabled = true;
env.IsScriptDisabled = true;
}
else if (SecurityDiagnosticHelpers.IsXsltSettingsTrustedXsltProperty(rhsPropertySymbol, _xmlTypes))
{
XsltSettingsEnvironment env = new XsltSettingsEnvironment();
_xsltSettingsEnvironments[lhsSymbol] = env;
env.XsltSettingsSymbol = lhsSymbol;
env.XsltSettingsDefinitionSymbol = rhsPropertySymbol;
env.XsltSettingsDefinition = node;
env.EnclosingConstructSymbol = _syntaxNodeHelper.GetEnclosingConstructSymbol(node, model);
}
else
{
bool isXlstSettingsEnableDocumentFunctionProperty = SecurityDiagnosticHelpers.IsXsltSettingsEnableDocumentFunctionProperty(lhsSymbol as IPropertySymbol, _xmlTypes);
bool isXlstSettingsEnableScriptProperty = SecurityDiagnosticHelpers.IsXsltSettingsEnableScriptProperty(lhsSymbol as IPropertySymbol, _xmlTypes);
if (isXlstSettingsEnableDocumentFunctionProperty ||
isXlstSettingsEnableScriptProperty)
{
SyntaxNode lhsExpressionNode = _syntaxNodeHelper.GetMemberAccessExpressionNode(lhs);
if (lhsExpressionNode == null)
{
return;
}
ISymbol lhsExpressionSymbol = SyntaxNodeHelper.GetSymbol(lhsExpressionNode, model);
if (lhsExpressionSymbol == null)
{
return;
}
if (!_xsltSettingsEnvironments.TryGetValue(lhsExpressionSymbol, out XsltSettingsEnvironment env))
{
env = new XsltSettingsEnvironment
{
XsltSettingsSymbol = lhsExpressionSymbol
};
_xsltSettingsEnvironments[lhsExpressionSymbol] = env;
}
if (isXlstSettingsEnableDocumentFunctionProperty)
{
env.IsDocumentFunctionDisabled = SyntaxNodeHelper.NodeHasConstantValueBoolFalse(rhs, model);
}
else if (isXlstSettingsEnableScriptProperty)
{
env.IsScriptDisabled = SyntaxNodeHelper.NodeHasConstantValueBoolFalse(rhs, model);
}
}
}
}