Code:
/ Dotnetfx_Win7_3.5.1 / Dotnetfx_Win7_3.5.1 / 3.5.1 / DEVDIV / depot / DevDiv / releases / whidbey / NetFXspW7 / 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; } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // ==++== // // 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.
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