/// <summary> /// Remove the cache of a package. /// </summary> /// <param name="packageLocation">The Location string from PackageItem table.</param> private void RemoveCache(string packageLocation) { // Verify parameters Utilities.ValidateParameterNotEmpty("packageLocation", packageLocation); // Get the cache directory, outside of the impersonation block. string packageDirectory = SharePointPackageStoreReader.GetCacheDirectory(m_cacheSettings.CachePath, m_cacheSettings.ImpersonationBehavior, packageLocation); using (ImpersonateIdentity id = new ImpersonateIdentity(m_cacheSettings.ImpersonationBehavior)) { // Delete the directory and all subdirectories. Directory.Delete(packageDirectory, true); } }
/// <summary> /// Save the FileName value. This just saves some time if the file is cached before the filename is requested. /// </summary> /// <param name="filePath">The root folder of the cache directory where the file is saved.</param> private void SetFileName(string filePath) { // Only need to set this once. It cannot change. if (!String.IsNullOrEmpty(m_fileName)) { return; } using (ImpersonateIdentity id = new ImpersonateIdentity(m_settings.ImpersonationBehavior)) { DirectoryInfo dirInfo = new DirectoryInfo(filePath); FileInfo[] fiList = dirInfo.GetFiles(); m_fileName = fiList[0].Name; } }
/// <summary> /// Writes the file directly to the response. /// </summary> /// <param name="response"></param> public void TransmitFile(HttpResponse response) { CheckDisposed(); Utilities.ValidateParameterNonNull("response", response); // Run under elevated privileges in case we have to read from SP string absoluteFilePath = PackageReader.SafePathCombine(CachedPackage.CacheDir, FileName); response.Clear(); response.Buffer = false; response.BufferOutput = false; using (ImpersonateIdentity id = new ImpersonateIdentity(m_settings.ImpersonationBehavior)) { response.TransmitFile(absoluteFilePath); } }
/// <summary> /// Read the files from a package and import the package information into LearningStore. Only packages /// which may be executed can be imported into LearningStore. /// See the class overview information for details. /// </summary> /// <param name="packageReader">A reader to read the files in the package to be imported.</param> /// <param name="packageId">The identifier of the package whose files are being imported.</param> /// <returns>Returns the location of the package that was added.</returns> /// <remarks> /// <p/>This method copies all package files that are referenced in the manifest into a unique /// subdirectory in the basePath directory. /// /// <p/>This method will validate that the package does not have any errors when it is /// processed by the <c>PackageValidator</c> class. Warnings that occur during validaton /// will have no effect on adding the package. /// /// <p/>Only packages which can be excuted may be imported into LearningStore. A package may be /// executed if there is at least one <Organization> nodes within it. /// /// <p/>This method creates a transaction, regardless of whether or not it is called within /// a transaction. /// /// <p/>The identity passed to the constructor will be used to write the files to the file system. This /// account must have appropriate permissions to write to the basePath directory for the package store. /// /// <p/>The exceptions thrown by Directory.CreateDirectory() may also be thrown by this method. /// </remarks> /// <exception cref="PackageImportException">Thrown if the package to be added is not a /// <c>PackageType.ContentAggregation</c> or does not contain /// at least one <item> node.</exception> /// <exception cref="UnauthorizedAccessException">Thrown if the identity used to create this object /// does not have sufficient permissions in the file system directory.</exception> private string ImportFiles(PackageItemIdentifier packageId, PackageReader packageReader) { string relativePackageLocation; // package location unique to this pacakge // The outer try/catch block is there for security reasons. Search MSDN for // "WrapVulnerableFinallyClausesInOuterTry" to see details. try { string absPackageLocation = null; // Create directories using the identity account that was passed to the store. using (ImpersonateIdentity id = new ImpersonateIdentity(m_impersonationBehavior)) { // Create the directory, relative to m_basePath relativePackageLocation = CreatePackageDirectory(packageId.GetKey(), 100); // Get the absolution package location of the new package directory absPackageLocation = PackageReader.SafePathCombine(m_basePath, relativePackageLocation); } if (packageReader.GetType().Equals(typeof(ZipPackageReader))) { // Let the zip reader do its own copy, as it's more efficient. Do not impersonate, as the package reader // needs to use its own identity (not the the store's identity) to access the files // ZipPackageReader doesn't want the directory to exist. (We had to create it above to verify it was // possible). using (ImpersonateIdentity id = new ImpersonateIdentity(m_impersonationBehavior)) { Directory.Delete(absPackageLocation); } ZipPackageReader zipReader = packageReader as ZipPackageReader; zipReader.CopyTo(absPackageLocation); } else { foreach (string filePath in packageReader.GetFilePaths()) { using (Disposer disposer = new Disposer()) { string absFilePath; // absolute location of the file to write string absDirPath; // absolute location of the drectory to write to FileStream outputStream; // stream to write to // Get stream for file from package Stream pkgStream = packageReader.GetFileStream(filePath); disposer.Push(pkgStream); // Create subdirectory, if it's required using (ImpersonateIdentity id = new ImpersonateIdentity(m_impersonationBehavior)) { absFilePath = PackageReader.SafePathCombine(absPackageLocation, filePath); absDirPath = Path.GetDirectoryName(absFilePath); if (!File.Exists(absDirPath) && !Directory.Exists(absDirPath)) { // Create it Directory.CreateDirectory(absDirPath); } // Create file location to write outputStream = new FileStream(absFilePath, FileMode.Create); disposer.Push(outputStream); } // Copy from the pkgStream to the outputStream, using the correct identities Utilities.CopyStream(pkgStream, ImpersonationBehavior.UseImpersonatedIdentity, outputStream, m_impersonationBehavior); } } } using (ImpersonateIdentity id = new ImpersonateIdentity(m_impersonationBehavior)) { // Remove imsmanifest.xml from the target directory. It'll be stored in LearningStore and providing two // copies may cause confusion or sync issues. string manifestFilePath = PackageReader.SafePathCombine(absPackageLocation, "imsmanifest.xml"); File.Delete(manifestFilePath); } } catch { throw; } // Return the new package return(relativePackageLocation); }