Code:
/ Dotnetfx_Win7_3.5.1 / Dotnetfx_Win7_3.5.1 / 3.5.1 / DEVDIV / depot / DevDiv / releases / Orcas / NetFXw7 / wpf / src / Framework / MS / Internal / AppModel / ContentFilePart.cs / 1 / ContentFilePart.cs
//------------------------------------------------------------------------------ // //// Copyright (C) Microsoft Corporation. All rights reserved. // // // Description: // ContentFilePart is an implementation of the abstract PackagePart class. It contains an override for GetStreamCore. // // History: // 6/16/2005: Erichar - Initial creation. // //----------------------------------------------------------------------------- using System; using System.IO.Packaging; using System.Windows; using System.Windows.Resources; using System.IO; using System.Resources; using System.Globalization; using System.Security; using System.Security.Permissions; using System.Windows.Navigation; using System.Diagnostics; using System.Reflection; namespace MS.Internal.AppModel { ////// ContentFilePart is an implementation of the abstract PackagePart class. It contains an override for GetStreamCore. /// internal class ContentFilePart : System.IO.Packaging.PackagePart { //----------------------------------------------------- // // Public Constructors // //----------------------------------------------------- #region Public Constructors ////// Critical - Accesses member _fullPath. /// TreatAsSafe - Initializing _fullPath to null is safe /// [SecurityCritical, SecurityTreatAsSafe] internal ContentFilePart(Package container, Uri uri) : base(container, uri) { Invariant.Assert(Application.ResourceAssembly != null, "If the entry assembly is null no ContentFileParts should be created"); _fullPath = null; } #endregion //------------------------------------------------------ // // Protected Methods // //----------------------------------------------------- #region Protected Methods ////// Critical - Calls critical methods GetEntryAssemblyLocation() and CriticalOpenFile() /// and accesses critical member _fullPath. /// TreatAsSafe - The Uri supplied at construction is read only and must be on the list /// of loose content files supplied at application compile time. It is ok /// to return the stream because we know that the stream will be read only /// and cannot be used to get the application into an invalid state. /// [SecurityCritical, SecurityTreatAsSafe] protected override Stream GetStreamCore(FileMode mode, FileAccess access) { Stream stream = null; if (_fullPath == null) { // File name will be a path relative to the applications directory. // - We do not want to use SiteOfOriginContainer.SiteOfOrigin because // for deployed files thefiles are deployed with the application. Uri codeBase = GetEntryAssemblyLocation(); string assemblyName, assemblyVersion, assemblyKey; string filePath; // For now, only Application assembly supports content files, // so we can simply ignore the assemblyname etc. // In the future, we may extend this support for regular library assembly, // assemblyName will be used to predict the right file path. BaseUriHelper.GetAssemblyNameAndPart(Uri, out filePath, out assemblyName, out assemblyVersion, out assemblyKey); // filePath should not have leading slash. GetAssemblyNameAndPart( ) can guarantee it. Uri file = new Uri(codeBase, filePath); _fullPath = file.LocalPath; } stream = CriticalOpenFile(_fullPath); if (stream == null) { throw new IOException(SR.Get(SRID.UnableToLocateResource, Uri.ToString())); } return stream; } protected override string GetContentTypeCore() { return MS.Internal.MimeTypeMapper.GetMimeTypeFromUri(new Uri(Uri.ToString(),UriKind.RelativeOrAbsolute)).ToString(); } #endregion //------------------------------------------------------ // // Private Methods // //------------------------------------------------------ #region Private Methods /// /// Asserts for to get the location of the entry assembly /// [SecurityCritical] private Uri GetEntryAssemblyLocation() { Uri entryLocation = null; System.Security.PermissionSet permissionSet = new PermissionSet(null); permissionSet.AddPermission(new FileIOPermission(PermissionState.Unrestricted)); permissionSet.Assert(); try { entryLocation = new Uri(Application.ResourceAssembly.CodeBase); } catch(Exception ex) { if (CriticalExceptions.IsCriticalException(ex)) { throw; } // `Swallow any other exceptions to avoid disclosing the critical path. // // Possible Exceptions: ArgumentException, ArgumentNullException, PathTooLongException // DirectoryNotFoundException, IOException, UnauthorizedAccessException, // ArgumentOutOfRangeException, FileNotFoundException, NotSupportedException } finally { CodeAccessPermission.RevertAssert(); } return entryLocation; } ////// Asserts to open the file /// [SecurityCritical] private Stream CriticalOpenFile(string filename) { Stream s = null; FileIOPermission filePermission = new FileIOPermission(FileIOPermissionAccess.Read, filename); filePermission.Assert(); try { s = System.IO.File.Open(filename, FileMode.Open, FileAccess.Read, ResourceContainer.FileShare); } finally { CodeAccessPermission.RevertAssert(); } return s; } #endregion //----------------------------------------------------- // // Private Fields // //------------------------------------------------------ #region Private Members ////// Contains critical path information that shouldn't be disclosed. /// [SecurityCritical] private string _fullPath; #endregion Private Members } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved. //------------------------------------------------------------------------------ // //// Copyright (C) Microsoft Corporation. All rights reserved. // // // Description: // ContentFilePart is an implementation of the abstract PackagePart class. It contains an override for GetStreamCore. // // History: // 6/16/2005: Erichar - Initial creation. // //----------------------------------------------------------------------------- using System; using System.IO.Packaging; using System.Windows; using System.Windows.Resources; using System.IO; using System.Resources; using System.Globalization; using System.Security; using System.Security.Permissions; using System.Windows.Navigation; using System.Diagnostics; using System.Reflection; namespace MS.Internal.AppModel { ////// ContentFilePart is an implementation of the abstract PackagePart class. It contains an override for GetStreamCore. /// internal class ContentFilePart : System.IO.Packaging.PackagePart { //----------------------------------------------------- // // Public Constructors // //----------------------------------------------------- #region Public Constructors ////// Critical - Accesses member _fullPath. /// TreatAsSafe - Initializing _fullPath to null is safe /// [SecurityCritical, SecurityTreatAsSafe] internal ContentFilePart(Package container, Uri uri) : base(container, uri) { Invariant.Assert(Application.ResourceAssembly != null, "If the entry assembly is null no ContentFileParts should be created"); _fullPath = null; } #endregion //------------------------------------------------------ // // Protected Methods // //----------------------------------------------------- #region Protected Methods ////// Critical - Calls critical methods GetEntryAssemblyLocation() and CriticalOpenFile() /// and accesses critical member _fullPath. /// TreatAsSafe - The Uri supplied at construction is read only and must be on the list /// of loose content files supplied at application compile time. It is ok /// to return the stream because we know that the stream will be read only /// and cannot be used to get the application into an invalid state. /// [SecurityCritical, SecurityTreatAsSafe] protected override Stream GetStreamCore(FileMode mode, FileAccess access) { Stream stream = null; if (_fullPath == null) { // File name will be a path relative to the applications directory. // - We do not want to use SiteOfOriginContainer.SiteOfOrigin because // for deployed files thefiles are deployed with the application. Uri codeBase = GetEntryAssemblyLocation(); string assemblyName, assemblyVersion, assemblyKey; string filePath; // For now, only Application assembly supports content files, // so we can simply ignore the assemblyname etc. // In the future, we may extend this support for regular library assembly, // assemblyName will be used to predict the right file path. BaseUriHelper.GetAssemblyNameAndPart(Uri, out filePath, out assemblyName, out assemblyVersion, out assemblyKey); // filePath should not have leading slash. GetAssemblyNameAndPart( ) can guarantee it. Uri file = new Uri(codeBase, filePath); _fullPath = file.LocalPath; } stream = CriticalOpenFile(_fullPath); if (stream == null) { throw new IOException(SR.Get(SRID.UnableToLocateResource, Uri.ToString())); } return stream; } protected override string GetContentTypeCore() { return MS.Internal.MimeTypeMapper.GetMimeTypeFromUri(new Uri(Uri.ToString(),UriKind.RelativeOrAbsolute)).ToString(); } #endregion //------------------------------------------------------ // // Private Methods // //------------------------------------------------------ #region Private Methods /// /// Asserts for to get the location of the entry assembly /// [SecurityCritical] private Uri GetEntryAssemblyLocation() { Uri entryLocation = null; System.Security.PermissionSet permissionSet = new PermissionSet(null); permissionSet.AddPermission(new FileIOPermission(PermissionState.Unrestricted)); permissionSet.Assert(); try { entryLocation = new Uri(Application.ResourceAssembly.CodeBase); } catch(Exception ex) { if (CriticalExceptions.IsCriticalException(ex)) { throw; } // `Swallow any other exceptions to avoid disclosing the critical path. // // Possible Exceptions: ArgumentException, ArgumentNullException, PathTooLongException // DirectoryNotFoundException, IOException, UnauthorizedAccessException, // ArgumentOutOfRangeException, FileNotFoundException, NotSupportedException } finally { CodeAccessPermission.RevertAssert(); } return entryLocation; } ////// Asserts to open the file /// [SecurityCritical] private Stream CriticalOpenFile(string filename) { Stream s = null; FileIOPermission filePermission = new FileIOPermission(FileIOPermissionAccess.Read, filename); filePermission.Assert(); try { s = System.IO.File.Open(filename, FileMode.Open, FileAccess.Read, ResourceContainer.FileShare); } finally { CodeAccessPermission.RevertAssert(); } return s; } #endregion //----------------------------------------------------- // // Private Fields // //------------------------------------------------------ #region Private Members ////// Contains critical path information that shouldn't be disclosed. /// [SecurityCritical] private string _fullPath; #endregion Private Members } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved.
Link Menu

This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- XmlSchemaInclude.cs
- ContextMenuAutomationPeer.cs
- EntityContainerEmitter.cs
- DataContractJsonSerializer.cs
- Membership.cs
- HtmlButton.cs
- TextEditorSelection.cs
- XmlMtomReader.cs
- WsatRegistrationHeader.cs
- Size.cs
- CroppedBitmap.cs
- BackStopAuthenticationModule.cs
- SqlBulkCopy.cs
- OutgoingWebRequestContext.cs
- MultipartIdentifier.cs
- MenuItemStyle.cs
- MeasureItemEvent.cs
- RightsManagementPermission.cs
- QueueProcessor.cs
- MessageQueueAccessControlEntry.cs
- XamlPointCollectionSerializer.cs
- StrokeIntersection.cs
- TextServicesCompartmentEventSink.cs
- DeploymentExceptionMapper.cs
- CounterCreationData.cs
- FixedPageStructure.cs
- SymLanguageType.cs
- RandomNumberGenerator.cs
- DesignerVerb.cs
- ConfigurationSection.cs
- DataTableTypeConverter.cs
- SrgsSubset.cs
- Clause.cs
- ObjectListDesigner.cs
- XamlDesignerSerializationManager.cs
- WindowInteractionStateTracker.cs
- Guid.cs
- PolyLineSegmentFigureLogic.cs
- PageAdapter.cs
- SqlAggregateChecker.cs
- ReceiveActivityValidator.cs
- DataKey.cs
- Cloud.cs
- JournalEntryListConverter.cs
- DesignerAttribute.cs
- MouseButton.cs
- MemoryFailPoint.cs
- ConfigurationStrings.cs
- StringAnimationUsingKeyFrames.cs
- ConnectionsZone.cs
- FormViewUpdateEventArgs.cs
- RemotingClientProxy.cs
- PasswordBoxAutomationPeer.cs
- OleStrCAMarshaler.cs
- ToolboxItemCollection.cs
- TimeSpanValidator.cs
- XmlCodeExporter.cs
- ZipIOExtraFieldPaddingElement.cs
- UnsafeNativeMethods.cs
- CombinedTcpChannel.cs
- DefaultDiscoveryService.cs
- XmlWhitespace.cs
- UnmanagedMarshal.cs
- DBConnectionString.cs
- HttpListenerContext.cs
- SymbolEqualComparer.cs
- Codec.cs
- XmlComment.cs
- CollectionBuilder.cs
- PromptStyle.cs
- FormsIdentity.cs
- InternalConfigSettingsFactory.cs
- DoubleAnimationBase.cs
- ListDataBindEventArgs.cs
- AffineTransform3D.cs
- ExternalException.cs
- SqlConnectionPoolGroupProviderInfo.cs
- NetworkInformationPermission.cs
- XslAst.cs
- Debug.cs
- StringFunctions.cs
- FramingFormat.cs
- ConnectionConsumerAttribute.cs
- sqlcontext.cs
- IntAverageAggregationOperator.cs
- WebPartMenu.cs
- DataViewSetting.cs
- ContentType.cs
- OdbcConnectionString.cs
- AccessedThroughPropertyAttribute.cs
- PropertyGeneratedEventArgs.cs
- ExpressionBindingsDialog.cs
- BaseValidatorDesigner.cs
- ValidationHelper.cs
- InvalidDataException.cs
- InstanceDescriptor.cs
- ServicePointManager.cs
- IListConverters.cs
- OleDbException.cs
- CryptoStream.cs