ManifestSignatureInformation.cs source code in C# .NET

                        Code:
                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / Core / System / Security / Cryptography / ManifestSignatureInformation.cs / 1305376 / ManifestSignatureInformation.cs
                        
                        
                            // ==++== 
//
//   Copyright (c) Microsoft Corporation.  All rights reserved.
//
// ==--== 

using System; 
using System.Collections.Generic; 
using System.Collections.ObjectModel;
using System.Deployment.Internal; 
using System.Diagnostics;
using System.IO;
using System.Runtime.InteropServices.ComTypes;
using System.Security; 
using System.Security.Cryptography.X509Certificates;
using System.Security.Cryptography.Xml; 
using System.Xml; 

namespace System.Security.Cryptography { 
    /// 
    ///     Wrapper for information about the various signatures that can be applied to a manifest
    /// 
    [System.Security.Permissions.HostProtection(MayLeakOnAbort = true)] 
    public sealed class ManifestSignatureInformation {
        private ManifestKinds m_manifest; 
        private StrongNameSignatureInformation m_strongNameSignature; 
        private AuthenticodeSignatureInformation m_authenticodeSignature;
 
        internal ManifestSignatureInformation(ManifestKinds manifest,
                                              StrongNameSignatureInformation strongNameSignature,
                                              AuthenticodeSignatureInformation authenticodeSignature) {
            Debug.Assert(manifest == ManifestKinds.Application || manifest == ManifestKinds.Deployment, "Invalid manifest for signature information"); 

            m_manifest = manifest; 
            m_strongNameSignature = strongNameSignature; 
            m_authenticodeSignature = authenticodeSignature;
        } 

        /// 
        ///     Authenticode signature of the manifest
        ///  
        public AuthenticodeSignatureInformation AuthenticodeSignature {
            get { return m_authenticodeSignature; } 
        } 

        ///  
        ///     Manifest the signature information is for
        /// 
        public ManifestKinds Manifest {
            get { return m_manifest; } 
        }
 
        ///  
        ///     Details about the strong name signature of the manifest
        ///  
        public StrongNameSignatureInformation StrongNameSignature {
            get { return m_strongNameSignature; }
        }
 
        /// 
        ///     Load the XML from the specified manifest into an XmlDocument 
        ///  
        // 
        //  
        // 
        [System.Security.SecurityCritical]
        private static XmlDocument GetManifestXml(ActivationContext application, ManifestKinds manifest) {
            Debug.Assert(application != null, "application != null"); 

            IStream manifestStream = null; 
            if (manifest == ManifestKinds.Application) { 
                manifestStream = InternalActivationContextHelper.GetApplicationComponentManifest(application) as IStream;
            } 
            else if (manifest == ManifestKinds.Deployment) {
                manifestStream = InternalActivationContextHelper.GetDeploymentComponentManifest(application) as IStream;
            }
            Debug.Assert(manifestStream != null, "Cannot get stream for manifest"); 

            using (MemoryStream manifestContent = new MemoryStream()) { 
                byte[] buffer = new byte[4096]; 
                int bytesRead = 0;
                do { 
                    unsafe {
                        manifestStream.Read(buffer, buffer.Length, new IntPtr(&bytesRead));
                    }
 
                    manifestContent.Write(buffer, 0, bytesRead);
                } 
                while (bytesRead == buffer.Length); 
                manifestContent.Position = 0;
 
                XmlDocument manifestXml = new XmlDocument();
                manifestXml.PreserveWhitespace = true;
                manifestXml.Load(manifestContent);
 
                return manifestXml;
            } 
        } 

        ///  
        ///     Verify and gather information about the signatures of the specified manifests
        /// 
        public static ManifestSignatureInformationCollection VerifySignature(ActivationContext application) {
            return VerifySignature(application, ManifestKinds.ApplicationAndDeployment); 
        }
 
        ///  
        ///     Verify and gather information about the signatures of the specified manifests
        ///  
        public static ManifestSignatureInformationCollection VerifySignature(ActivationContext application,
                                                                             ManifestKinds manifests) {
            return VerifySignature(application,
                                   manifests, 
                                   X509RevocationFlag.ExcludeRoot,
                                   X509RevocationMode.Online); 
        } 

        ///  
        ///     Verify and gather information about the signatures of the specified manifests
        /// 
        // 
        //  
        // 
        [System.Security.SecurityCritical] 
        public static ManifestSignatureInformationCollection VerifySignature(ActivationContext application, 
                                                                             ManifestKinds manifests,
                                                                             X509RevocationFlag revocationFlag, 
                                                                             X509RevocationMode revocationMode) {
            if (application == null) {
                throw new ArgumentNullException("application");
            } 
            if (revocationFlag < X509RevocationFlag.EndCertificateOnly || X509RevocationFlag.ExcludeRoot < revocationFlag) {
                throw new ArgumentOutOfRangeException("revocationFlag"); 
            } 
            if (revocationMode < X509RevocationMode.NoCheck || X509RevocationMode.Offline < revocationMode) {
                throw new ArgumentOutOfRangeException("revocationMode"); 
            }

            List signatures = new List();
            if ((manifests & ManifestKinds.Deployment) == ManifestKinds.Deployment) { 
                XmlDocument deploymentManifest = GetManifestXml(application, ManifestKinds.Deployment);
                ManifestSignedXml deploymentSignature = new ManifestSignedXml(deploymentManifest, 
                                                                              ManifestKinds.Deployment); 
                signatures.Add(deploymentSignature.VerifySignature(revocationFlag, revocationMode));
            } 
            if ((manifests & ManifestKinds.Application) == ManifestKinds.Application) {
                XmlDocument applicationManifest = GetManifestXml(application, ManifestKinds.Application);
                ManifestSignedXml applicationSignature = new ManifestSignedXml(applicationManifest,
                                                                               ManifestKinds.Application); 
                signatures.Add(applicationSignature.VerifySignature(revocationFlag, revocationMode));
            } 
 
            return new ManifestSignatureInformationCollection(signatures);
        } 
    }

    [System.Security.Permissions.HostProtection(MayLeakOnAbort = true)]
    public sealed class ManifestSignatureInformationCollection : ReadOnlyCollection { 
        internal ManifestSignatureInformationCollection(IList signatureInformation) : base(signatureInformation) {
            return; 
        } 
    }
} 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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ManifestSignatureInformation.cs source code in C# .NET

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