Code:
/ FXUpdate3074 / FXUpdate3074 / 1.1 / untmp / whidbey / QFE / ndp / clr / src / BCL / System / Security / Policy / ApplicationSecurityManager.cs / 3 / ApplicationSecurityManager.cs
// ==++== // // Copyright (c) Microsoft Corporation. All rights reserved. // // ==--== // // ApplicationSecurityManager.cs // namespace System.Security.Policy { using System.Deployment.Internal.Isolation; using System.Deployment.Internal.Isolation.Manifest; using System.IO; using System.Runtime.Versioning; using System.Security.Permissions; using System.Security.Util; [System.Runtime.InteropServices.ComVisible(true)] public static class ApplicationSecurityManager { private static IApplicationTrustManager m_appTrustManager = null; // // Public static methods. // [SecurityPermission(SecurityAction.LinkDemand, Flags = SecurityPermissionFlag.ControlPolicy | SecurityPermissionFlag.ControlEvidence)] [SecurityPermissionAttribute(SecurityAction.Assert, Unrestricted=true)] public static bool DetermineApplicationTrust (ActivationContext activationContext, TrustManagerContext context) { if (activationContext == null) throw new ArgumentNullException("activationContext"); ApplicationTrust appTrust = null; AppDomainManager domainManager = AppDomain.CurrentDomain.DomainManager; if (domainManager != null) { HostSecurityManager securityManager = domainManager.HostSecurityManager; if ((securityManager != null) && ((securityManager.Flags & HostSecurityManagerOptions.HostDetermineApplicationTrust) == HostSecurityManagerOptions.HostDetermineApplicationTrust)) { appTrust = securityManager.DetermineApplicationTrust(CmsUtils.MergeApplicationEvidence(null, activationContext.Identity, activationContext, null), null, context); if (appTrust == null) return false; return appTrust.IsApplicationTrustedToRun; } } appTrust = DetermineApplicationTrustInternal(activationContext, context); if (appTrust == null) return false; return appTrust.IsApplicationTrustedToRun; } // // Public static properties. // public static ApplicationTrustCollection UserApplicationTrusts { [SecurityPermissionAttribute(SecurityAction.Demand, Flags=SecurityPermissionFlag.ControlPolicy)] get { return new ApplicationTrustCollection(true); } } public static IApplicationTrustManager ApplicationTrustManager { [SecurityPermissionAttribute(SecurityAction.Demand, Flags=SecurityPermissionFlag.ControlPolicy)] get { if (m_appTrustManager == null) { m_appTrustManager = DecodeAppTrustManager(); if (m_appTrustManager == null) throw new PolicyException(Environment.GetResourceString("Policy_NoTrustManager")); } return m_appTrustManager; } } // // Internal // internal static ApplicationTrust DetermineApplicationTrustInternal (ActivationContext activationContext, TrustManagerContext context) { ApplicationTrust trust = null; ApplicationTrustCollection userTrusts = new ApplicationTrustCollection(true); // See if there is a persisted trust decision for this application. if ((context == null || !context.IgnorePersistedDecision)) { trust = userTrusts[activationContext.Identity.FullName]; if (trust != null) return trust; } // There is no cached trust decision so invoke the trust manager. trust = ApplicationTrustManager.DetermineApplicationTrust(activationContext, context); if (trust == null) trust = new ApplicationTrust(activationContext.Identity); // make sure the application identity is correctly set. trust.ApplicationIdentity = activationContext.Identity; if (trust.Persist) userTrusts.Add(trust); return trust; } // // Private. // private static string s_machineConfigFile = Config.MachineDirectory + "applicationtrust.config"; [ResourceExposure(ResourceScope.None)] [ResourceConsumption(ResourceScope.Machine, ResourceScope.Machine)] private static IApplicationTrustManager DecodeAppTrustManager () { if (!File.InternalExists(s_machineConfigFile)) goto defaultTrustManager; // A config file exists. Decode the trust manager from its Xml. FileStream contents = new FileStream(s_machineConfigFile, FileMode.Open, FileAccess.Read); SecurityElement elRoot = SecurityElement.FromString(new StreamReader(contents).ReadToEnd()); SecurityElement elMscorlib = elRoot.SearchForChildByTag("mscorlib"); if (elMscorlib == null) goto defaultTrustManager; SecurityElement elSecurity = elMscorlib.SearchForChildByTag("security"); if (elSecurity == null) goto defaultTrustManager; SecurityElement elPolicy = elSecurity.SearchForChildByTag("policy"); if (elPolicy == null) goto defaultTrustManager; SecurityElement elSecurityManager = elPolicy.SearchForChildByTag("ApplicationSecurityManager"); if (elSecurityManager == null) goto defaultTrustManager; SecurityElement elTrustManager = elSecurityManager.SearchForChildByTag("IApplicationTrustManager"); if (elTrustManager == null) goto defaultTrustManager; IApplicationTrustManager appTrustManager = DecodeAppTrustManagerFromElement(elTrustManager); if (appTrustManager == null) goto defaultTrustManager; return appTrustManager; defaultTrustManager: return DecodeAppTrustManagerFromElement(CreateDefaultApplicationTrustManagerElement()); } private static SecurityElement CreateDefaultApplicationTrustManagerElement() { SecurityElement elTrustManager = new SecurityElement("IApplicationTrustManager"); elTrustManager.AddAttribute("class", "System.Security.Policy.TrustManager, System.Windows.Forms, Version=" + System.Reflection.Assembly.GetExecutingAssembly().GetVersion() + ", Culture=neutral, PublicKeyToken=" + AssemblyRef.EcmaPublicKeyToken); elTrustManager.AddAttribute("version", "1"); return elTrustManager; } private static IApplicationTrustManager DecodeAppTrustManagerFromElement (SecurityElement elTrustManager) { new ReflectionPermission(ReflectionPermissionFlag.MemberAccess).Assert(); string trustManagerName = elTrustManager.Attribute("class"); Type tmClass = Type.GetType(trustManagerName, false, false); if (tmClass == null) return null; IApplicationTrustManager appTrustManager = Activator.CreateInstance(tmClass) as IApplicationTrustManager; if (appTrustManager != null) appTrustManager.FromXml(elTrustManager); return appTrustManager; } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved.
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- TemplateComponentConnector.cs
- CreateUserErrorEventArgs.cs
- LambdaCompiler.Logical.cs
- DeviceFilterEditorDialog.cs
- StorageAssociationTypeMapping.cs
- WebException.cs
- DataGridViewCellContextMenuStripNeededEventArgs.cs
- SafeThreadHandle.cs
- EntityViewContainer.cs
- OneToOneMappingSerializer.cs
- BindingNavigator.cs
- PageHandlerFactory.cs
- CodeArrayIndexerExpression.cs
- Set.cs
- ReadContentAsBinaryHelper.cs
- ContextConfiguration.cs
- SqlAliasesReferenced.cs
- HiddenField.cs
- RoutingExtensionElement.cs
- ObjectDataSource.cs
- WmlFormAdapter.cs
- StyleXamlParser.cs
- QueryContinueDragEventArgs.cs
- TransformPattern.cs
- Pointer.cs
- FlagPanel.cs
- TextMessageEncodingBindingElement.cs
- TrustSection.cs
- Activity.cs
- SchemaElement.cs
- AliasGenerator.cs
- WriteLine.cs
- ModelPerspective.cs
- XmlSchemaImporter.cs
- ModifierKeysConverter.cs
- SoapIncludeAttribute.cs
- TemplateLookupAction.cs
- DisableDpiAwarenessAttribute.cs
- lengthconverter.cs
- DispatcherHooks.cs
- HtmlTableCellCollection.cs
- odbcmetadatacolumnnames.cs
- DataObjectAttribute.cs
- DocumentGridContextMenu.cs
- CodeSubDirectoriesCollection.cs
- PathFigureCollection.cs
- SvcMapFile.cs
- DomainLiteralReader.cs
- RecordManager.cs
- ToggleButtonAutomationPeer.cs
- HttpInputStream.cs
- SemanticResolver.cs
- ModifierKeysValueSerializer.cs
- ToolBar.cs
- DataSourceComponent.cs
- ReferencedAssembly.cs
- DynamicFilterExpression.cs
- ListItemConverter.cs
- DesignerResources.cs
- DispatchWrapper.cs
- SqlUserDefinedTypeAttribute.cs
- WebBrowserContainer.cs
- StylusPointPropertyUnit.cs
- WorkflowEnvironment.cs
- OdbcConnectionFactory.cs
- RoutedEventArgs.cs
- PrincipalPermission.cs
- ParentControlDesigner.cs
- DataGridViewCellLinkedList.cs
- Margins.cs
- InputProcessorProfiles.cs
- InternalConfirm.cs
- Double.cs
- FontUnit.cs
- GenericTypeParameterBuilder.cs
- SwitchElementsCollection.cs
- WebRequest.cs
- MetabaseServerConfig.cs
- SecurityHeaderLayout.cs
- MarkupCompilePass1.cs
- WindowsAuthenticationEventArgs.cs
- DateTimePicker.cs
- ItemsChangedEventArgs.cs
- SchemaRegistration.cs
- DataGridViewTopLeftHeaderCell.cs
- DbProviderServices.cs
- XmlSchemaComplexType.cs
- XmlSequenceWriter.cs
- HMAC.cs
- XsdCachingReader.cs
- AlphabeticalEnumConverter.cs
- XmlReflectionImporter.cs
- TypeBuilder.cs
- ProfessionalColorTable.cs
- EnvironmentPermission.cs
- TransportReplyChannelAcceptor.cs
- BmpBitmapEncoder.cs
- StandardBindingCollectionElement.cs
- ListViewTableCell.cs
- RectAnimationBase.cs