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
- WebConfigurationFileMap.cs
- FileInfo.cs
- TrueReadOnlyCollection.cs
- DataContract.cs
- SecurityIdentifierElementCollection.cs
- NameSpaceEvent.cs
- RawAppCommandInputReport.cs
- DataControlCommands.cs
- TiffBitmapEncoder.cs
- ServiceMetadataPublishingElement.cs
- DataContractSerializerOperationFormatter.cs
- DynamicValidator.cs
- LineServices.cs
- TableNameAttribute.cs
- MatrixKeyFrameCollection.cs
- EqualityComparer.cs
- TextDocumentView.cs
- TemplateControlParser.cs
- EventLogSession.cs
- ResourceKey.cs
- ConnectionStringsExpressionBuilder.cs
- RichTextBox.cs
- SingleAnimation.cs
- _ChunkParse.cs
- CriticalFinalizerObject.cs
- SoapCodeExporter.cs
- PointUtil.cs
- WinFormsComponentEditor.cs
- RepeaterItem.cs
- EntityDesignerBuildProvider.cs
- VectorConverter.cs
- util.cs
- MenuCommands.cs
- WebControlsSection.cs
- HtmlTable.cs
- StreamUpdate.cs
- DirectionalLight.cs
- TraceUtils.cs
- ContextMenuStrip.cs
- ConfigurationLocation.cs
- KoreanCalendar.cs
- DocComment.cs
- ErrorFormatter.cs
- RootContext.cs
- VirtualPathUtility.cs
- DataGridViewCellMouseEventArgs.cs
- SettingsAttributes.cs
- AsyncPostBackErrorEventArgs.cs
- SqlProfileProvider.cs
- ActivityTypeResolver.xaml.cs
- Parameter.cs
- InputLanguageSource.cs
- ConfigXmlCDataSection.cs
- OpenTypeLayoutCache.cs
- DataSourceGroupCollection.cs
- ValidationErrorEventArgs.cs
- SqlClientMetaDataCollectionNames.cs
- CheckBoxField.cs
- CookieProtection.cs
- ContentPlaceHolder.cs
- FormViewCommandEventArgs.cs
- StagingAreaInputItem.cs
- LoginUtil.cs
- ControlPaint.cs
- JobStaple.cs
- ChineseLunisolarCalendar.cs
- Row.cs
- ComboBox.cs
- PropertyChangingEventArgs.cs
- ToolboxItemFilterAttribute.cs
- OperatorExpressions.cs
- Freezable.cs
- XXXOnTypeBuilderInstantiation.cs
- handlecollector.cs
- DrawingAttributeSerializer.cs
- _KerberosClient.cs
- StyleCollectionEditor.cs
- DispatchChannelSink.cs
- OdbcError.cs
- SqlErrorCollection.cs
- UnaryQueryOperator.cs
- _RequestLifetimeSetter.cs
- OperationResponse.cs
- NativeMethods.cs
- XsdBuilder.cs
- Rotation3DKeyFrameCollection.cs
- SqlDataSourceStatusEventArgs.cs
- EntityViewGenerator.cs
- ModelToObjectValueConverter.cs
- PrinterUnitConvert.cs
- Image.cs
- GorillaCodec.cs
- ApplicationDirectory.cs
- ForwardPositionQuery.cs
- LinqDataView.cs
- RtfControls.cs
- ObjectMaterializedEventArgs.cs
- CqlGenerator.cs
- UIElementIsland.cs
- Literal.cs