Code:
/ 4.0 / 4.0 / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / Xml / System / Xml / XmlSecureResolver.cs / 1305376 / XmlSecureResolver.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //[....] //----------------------------------------------------------------------------- namespace System.Xml { using System.Net; using System.Security; using System.Security.Policy; using System.Security.Permissions; using System.Runtime.Versioning; [PermissionSetAttribute(SecurityAction.InheritanceDemand, Name = "FullTrust")] public class XmlSecureResolver : XmlResolver { XmlResolver resolver; PermissionSet permissionSet; public XmlSecureResolver(XmlResolver resolver, string securityUrl) : this(resolver, CreateEvidenceForUrl(securityUrl)) {} public XmlSecureResolver(XmlResolver resolver, Evidence evidence) : this(resolver, SecurityManager.GetStandardSandbox(evidence)) {} public XmlSecureResolver(XmlResolver resolver, PermissionSet permissionSet) { this.resolver = resolver; this.permissionSet = permissionSet; } public override ICredentials Credentials { set { resolver.Credentials = value; } } public override object GetEntity(Uri absoluteUri, string role, Type ofObjectToReturn) { permissionSet.PermitOnly(); return resolver.GetEntity(absoluteUri, role, ofObjectToReturn); } [ResourceConsumption(ResourceScope.Machine)] [ResourceExposure(ResourceScope.Machine)] public override Uri ResolveUri(Uri baseUri, string relativeUri) { return resolver.ResolveUri(baseUri, relativeUri); } public static Evidence CreateEvidenceForUrl(string securityUrl) { Evidence evidence = new Evidence(); if (securityUrl != null && securityUrl.Length > 0) { evidence.AddHostEvidence(new Url(securityUrl)); evidence.AddHostEvidence(Zone.CreateFromUrl(securityUrl)); Uri uri = new Uri(securityUrl, UriKind.RelativeOrAbsolute); if (uri.IsAbsoluteUri && !uri.IsFile) { evidence.AddHostEvidence(Site.CreateFromUrl(securityUrl)); } // Allow same directory access for UNCs (SQLBUDT 394535) if (uri.IsAbsoluteUri && uri.IsUnc) { string uncDir = System.IO.Path.GetDirectoryName(uri.LocalPath); if (uncDir != null && uncDir.Length != 0) { evidence.AddHostEvidence(new UncDirectory(uncDir)); } } } return evidence; } [Serializable] private class UncDirectory : EvidenceBase, IIdentityPermissionFactory { private string uncDir; public UncDirectory(string uncDirectory) { this.uncDir = uncDirectory; } public IPermission CreateIdentityPermission(Evidence evidence) { return new FileIOPermission(FileIOPermissionAccess.Read, uncDir); } public override EvidenceBase Clone() { return new UncDirectory(uncDir); } private SecurityElement ToXml() { SecurityElement root = new SecurityElement("System.Xml.XmlSecureResolver"); root.AddAttribute("version", "1"); root.AddChild(new SecurityElement("UncDirectory", uncDir)); return root; } public override string ToString() { return ToXml().ToString(); } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. //------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //[....] //----------------------------------------------------------------------------- namespace System.Xml { using System.Net; using System.Security; using System.Security.Policy; using System.Security.Permissions; using System.Runtime.Versioning; [PermissionSetAttribute(SecurityAction.InheritanceDemand, Name = "FullTrust")] public class XmlSecureResolver : XmlResolver { XmlResolver resolver; PermissionSet permissionSet; public XmlSecureResolver(XmlResolver resolver, string securityUrl) : this(resolver, CreateEvidenceForUrl(securityUrl)) {} public XmlSecureResolver(XmlResolver resolver, Evidence evidence) : this(resolver, SecurityManager.GetStandardSandbox(evidence)) {} public XmlSecureResolver(XmlResolver resolver, PermissionSet permissionSet) { this.resolver = resolver; this.permissionSet = permissionSet; } public override ICredentials Credentials { set { resolver.Credentials = value; } } public override object GetEntity(Uri absoluteUri, string role, Type ofObjectToReturn) { permissionSet.PermitOnly(); return resolver.GetEntity(absoluteUri, role, ofObjectToReturn); } [ResourceConsumption(ResourceScope.Machine)] [ResourceExposure(ResourceScope.Machine)] public override Uri ResolveUri(Uri baseUri, string relativeUri) { return resolver.ResolveUri(baseUri, relativeUri); } public static Evidence CreateEvidenceForUrl(string securityUrl) { Evidence evidence = new Evidence(); if (securityUrl != null && securityUrl.Length > 0) { evidence.AddHostEvidence(new Url(securityUrl)); evidence.AddHostEvidence(Zone.CreateFromUrl(securityUrl)); Uri uri = new Uri(securityUrl, UriKind.RelativeOrAbsolute); if (uri.IsAbsoluteUri && !uri.IsFile) { evidence.AddHostEvidence(Site.CreateFromUrl(securityUrl)); } // Allow same directory access for UNCs (SQLBUDT 394535) if (uri.IsAbsoluteUri && uri.IsUnc) { string uncDir = System.IO.Path.GetDirectoryName(uri.LocalPath); if (uncDir != null && uncDir.Length != 0) { evidence.AddHostEvidence(new UncDirectory(uncDir)); } } } return evidence; } [Serializable] private class UncDirectory : EvidenceBase, IIdentityPermissionFactory { private string uncDir; public UncDirectory(string uncDirectory) { this.uncDir = uncDirectory; } public IPermission CreateIdentityPermission(Evidence evidence) { return new FileIOPermission(FileIOPermissionAccess.Read, uncDir); } public override EvidenceBase Clone() { return new UncDirectory(uncDir); } private SecurityElement ToXml() { SecurityElement root = new SecurityElement("System.Xml.XmlSecureResolver"); root.AddAttribute("version", "1"); root.AddChild(new SecurityElement("UncDirectory", uncDir)); return root; } public override string ToString() { return ToXml().ToString(); } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.
Link Menu

This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- NewArray.cs
- RequestCachePolicyConverter.cs
- RoleService.cs
- DrawingAttributes.cs
- ServiceInstanceProvider.cs
- ListItemCollection.cs
- QuaternionConverter.cs
- CategoryGridEntry.cs
- BitmapMetadata.cs
- DynamicPropertyHolder.cs
- WebBrowserProgressChangedEventHandler.cs
- PagedDataSource.cs
- DiscoveryClientDocuments.cs
- TemplateColumn.cs
- OneWayElement.cs
- ExtenderProvidedPropertyAttribute.cs
- JsonQueryStringConverter.cs
- EventLogStatus.cs
- XmlEnumAttribute.cs
- SapiAttributeParser.cs
- SqlPersistenceWorkflowInstanceDescription.cs
- ResizeGrip.cs
- ColorIndependentAnimationStorage.cs
- XmlSchemaCollection.cs
- TextModifier.cs
- SessionSwitchEventArgs.cs
- Underline.cs
- CompositionAdorner.cs
- ComPlusContractBehavior.cs
- CodePageEncoding.cs
- DataGridViewRowHeaderCell.cs
- ThreadLocal.cs
- ProfileSection.cs
- PrintControllerWithStatusDialog.cs
- handlecollector.cs
- SSmlParser.cs
- FocusChangedEventArgs.cs
- ApplyTemplatesAction.cs
- ButtonAutomationPeer.cs
- ScriptManagerProxy.cs
- SmtpDigestAuthenticationModule.cs
- Object.cs
- dsa.cs
- StaticDataManager.cs
- LinkUtilities.cs
- AssemblyLoader.cs
- DesignerActionVerbItem.cs
- DataFormat.cs
- __TransparentProxy.cs
- XamlBuildProvider.cs
- DesignerSerializationOptionsAttribute.cs
- DynamicPropertyHolder.cs
- LicenseException.cs
- ReturnEventArgs.cs
- MenuItem.cs
- DrawingContextDrawingContextWalker.cs
- ItemCollection.cs
- CmsInterop.cs
- XmlSchemaSubstitutionGroup.cs
- HMACRIPEMD160.cs
- RuntimeArgumentHandle.cs
- PixelShader.cs
- DataViewManagerListItemTypeDescriptor.cs
- ColorAnimationBase.cs
- FilterRepeater.cs
- EncoderBestFitFallback.cs
- TextEncodedRawTextWriter.cs
- RangeValuePatternIdentifiers.cs
- SqlClientWrapperSmiStream.cs
- TypeDependencyAttribute.cs
- StringKeyFrameCollection.cs
- HttpPostedFile.cs
- ProtocolViolationException.cs
- UnsafeNetInfoNativeMethods.cs
- LabelDesigner.cs
- InvokeFunc.cs
- Axis.cs
- TdsParser.cs
- SmtpNtlmAuthenticationModule.cs
- MachineKeyConverter.cs
- RectangleGeometry.cs
- Mutex.cs
- C14NUtil.cs
- MdiWindowListStrip.cs
- XDeferredAxisSource.cs
- DataRelationPropertyDescriptor.cs
- Delegate.cs
- DynamicPropertyReader.cs
- ErrorRuntimeConfig.cs
- TdsParserStateObject.cs
- ButtonField.cs
- Switch.cs
- CategoryNameCollection.cs
- PeerNameRegistration.cs
- PagePropertiesChangingEventArgs.cs
- StickyNoteAnnotations.cs
- QueryExecutionOption.cs
- StoreItemCollection.cs
- SafeNativeMethodsMilCoreApi.cs
- GeneralTransformCollection.cs