Code:
/ DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / clr / src / BCL / System / Security / Policy / ApplicationSecurityManager.cs / 1 / 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; } } }
Link Menu

This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- AccessDataSourceView.cs
- BinaryMethodMessage.cs
- ToolStripManager.cs
- TextDecorationCollectionConverter.cs
- _Win32.cs
- XmlStreamNodeWriter.cs
- PropertyHelper.cs
- CurrentTimeZone.cs
- EntityClassGenerator.cs
- CallContext.cs
- WebPartVerbCollection.cs
- MulticastDelegate.cs
- ExecutionEngineException.cs
- FixedBufferAttribute.cs
- ConstructorNeedsTagAttribute.cs
- PointAnimationClockResource.cs
- Expression.cs
- DomNameTable.cs
- MetaTable.cs
- PerformanceCounterPermissionEntryCollection.cs
- SliderAutomationPeer.cs
- Camera.cs
- ReflectTypeDescriptionProvider.cs
- WorkflowElementDialog.cs
- EndpointAddress.cs
- XPathAncestorQuery.cs
- MatrixTransform.cs
- FontStyleConverter.cs
- BaseCAMarshaler.cs
- ObjectDataSourceSelectingEventArgs.cs
- PerformanceCounterCategory.cs
- WorkflowServiceHostFactory.cs
- DefaultEventAttribute.cs
- X509CertificateInitiatorServiceCredential.cs
- CategoriesDocument.cs
- SystemMulticastIPAddressInformation.cs
- SortQuery.cs
- _SafeNetHandles.cs
- DictionaryBase.cs
- RectAnimationBase.cs
- ClientTarget.cs
- DbMetaDataFactory.cs
- SqlInternalConnectionTds.cs
- DiscoveryInnerClientAdhocCD1.cs
- DataRowView.cs
- Thickness.cs
- ApplicationServiceHelper.cs
- FormViewCommandEventArgs.cs
- GridViewPageEventArgs.cs
- RegistrySecurity.cs
- DbConnectionPoolIdentity.cs
- DmlSqlGenerator.cs
- IgnoreDeviceFilterElement.cs
- PartitionedDataSource.cs
- DataControlPagerLinkButton.cs
- TextSerializer.cs
- BasicViewGenerator.cs
- MetadataArtifactLoader.cs
- SqlResolver.cs
- StringUtil.cs
- EditCommandColumn.cs
- DataServiceRequest.cs
- DesignBindingConverter.cs
- RuleSetDialog.cs
- hebrewshape.cs
- StickyNote.cs
- IImplicitResourceProvider.cs
- CharacterMetricsDictionary.cs
- CustomAttributeFormatException.cs
- DnsEndpointIdentity.cs
- HandlerWithFactory.cs
- PageVisual.cs
- WinOEToolBoxItem.cs
- WebFormDesignerActionService.cs
- LassoHelper.cs
- XMLSchema.cs
- TileBrush.cs
- NativeMethods.cs
- objectquery_tresulttype.cs
- InputMethodStateChangeEventArgs.cs
- IODescriptionAttribute.cs
- X509PeerCertificateElement.cs
- BufferBuilder.cs
- SecurityContextSecurityTokenParameters.cs
- WebPartEditorCancelVerb.cs
- MergeFailedEvent.cs
- BoolExpr.cs
- Converter.cs
- SqlDataReader.cs
- GeometryModel3D.cs
- DeviceContexts.cs
- JsonQNameDataContract.cs
- BlurBitmapEffect.cs
- StatusBarPanel.cs
- SectionVisual.cs
- ToolStripManager.cs
- StylusPlugin.cs
- RsaKeyIdentifierClause.cs
- GridViewSelectEventArgs.cs
- InheritanceContextHelper.cs