Code:
/ 4.0 / 4.0 / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / clr / src / BCL / System / Security / Policy / EvidenceBase.cs / 1305376 / EvidenceBase.cs
// ==++== // // Copyright (c) Microsoft Corporation. All rights reserved. // // ==--== //[....] // using System; using System.Collections; using System.Collections.Generic; using System.Diagnostics.Contracts; using System.IO; using System.Runtime.InteropServices; #if FEATURE_SERIALIZATION using System.Runtime.Serialization.Formatters.Binary; #endif // FEATURE_SERIALIZATION using System.Security.Permissions; namespace System.Security.Policy { ////// Base class from which all objects to be used as Evidence must derive /// [ComVisible(true)] [Serializable] public abstract class EvidenceBase { protected EvidenceBase() { #if FEATURE_SERIALIZATION // All objects to be used as evidence must be serializable. Make sure that any derived types // are marked serializable to enforce this, since the attribute does not inherit down to derived // classes. if (!GetType().IsSerializable) { throw new InvalidOperationException(Environment.GetResourceString("Policy_EvidenceMustBeSerializable")); } #endif // FEATURE_SERIALIZATION } ////// Since legacy evidence objects would be cloned by being serialized, the default implementation /// of EvidenceBase will do the same. /// [SecurityPermission(SecurityAction.Assert, SerializationFormatter = true)] [SecuritySafeCritical] public virtual EvidenceBase Clone() { #if FEATURE_SERIALIZATION using (MemoryStream memoryStream = new MemoryStream()) { BinaryFormatter formatter = new BinaryFormatter(); formatter.Serialize(memoryStream, this); memoryStream.Position = 0; return formatter.Deserialize(memoryStream) as EvidenceBase; } #else // !FEATURE_SERIALIZATION throw new NotImplementedException(); #endif // FEATURE_SERIALIZATION } } ////// Interface for types which wrap Whidbey evidence objects for compatibility with v4 evidence rules /// internal interface ILegacyEvidenceAdapter { object EvidenceObject { get; } Type EvidenceType { get; } } ////// Wrapper class to hold legacy evidence objects which do not derive from EvidenceBase, and allow /// them to be held in the Evidence collection which expects to maintain lists of EvidenceBase only /// [Serializable] internal sealed class LegacyEvidenceWrapper : EvidenceBase, ILegacyEvidenceAdapter { private object m_legacyEvidence; internal LegacyEvidenceWrapper(object legacyEvidence) { Contract.Assert(legacyEvidence != null); Contract.Assert(legacyEvidence.GetType() != typeof(EvidenceBase), "Attempt to wrap an EvidenceBase in a LegacyEvidenceWrapper"); Contract.Assert(legacyEvidence.GetType().IsSerializable, "legacyEvidence.GetType().IsSerializable"); m_legacyEvidence = legacyEvidence; } public object EvidenceObject { get { return m_legacyEvidence; } } public Type EvidenceType { get { return m_legacyEvidence.GetType(); } } public override bool Equals(object obj) { return m_legacyEvidence.Equals(obj); } public override int GetHashCode() { return m_legacyEvidence.GetHashCode(); } } ////// Pre-v4 versions of the runtime allow multiple pieces of evidence that all have the same type. /// This type wraps those evidence objects into a single type of list, allowing legacy code to continue /// to work with the Evidence collection that does not expect multiple evidences of the same type. /// /// This may not be limited to LegacyEvidenceWrappers, since it's valid for legacy code to add multiple /// objects of built-in evidence to an Evidence collection. The built-in evidence now derives from /// EvienceObject, so when the legacy code runs on v4, it may end up attempting to add multiple /// Hash evidences for intsance. /// [Serializable] internal sealed class LegacyEvidenceList : EvidenceBase, IEnumerable, ILegacyEvidenceAdapter { private List m_legacyEvidenceList = new List (); public object EvidenceObject { get { // We'll choose the first item in the list to represent us if we're forced to return only // one object. This can occur if multiple pieces of evidence are added via the legacy APIs, // and then the new APIs are used to retrieve that evidence. return m_legacyEvidenceList.Count > 0 ? m_legacyEvidenceList[0] : null; } } public Type EvidenceType { get { Contract.Assert(m_legacyEvidenceList.Count > 0, "No items in LegacyEvidenceList, cannot tell what type they are"); ILegacyEvidenceAdapter adapter = m_legacyEvidenceList[0] as ILegacyEvidenceAdapter; return adapter == null ? m_legacyEvidenceList[0].GetType() : adapter.EvidenceType; } } public void Add(EvidenceBase evidence) { Contract.Assert(evidence != null); Contract.Assert(m_legacyEvidenceList.Count == 0 || EvidenceType == evidence.GetType() || (evidence is LegacyEvidenceWrapper && (evidence as LegacyEvidenceWrapper).EvidenceType == EvidenceType), "LegacyEvidenceList must be ----geonous"); Contract.Assert(evidence.GetType() != typeof(LegacyEvidenceList), "Attempt to add a legacy evidence list to another legacy evidence list"); m_legacyEvidenceList.Add(evidence); } public IEnumerator GetEnumerator() { return m_legacyEvidenceList.GetEnumerator(); } IEnumerator System.Collections.IEnumerable.GetEnumerator() { return m_legacyEvidenceList.GetEnumerator(); } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // ==++== // // Copyright (c) Microsoft Corporation. All rights reserved. // // ==--== // [....] // using System; using System.Collections; using System.Collections.Generic; using System.Diagnostics.Contracts; using System.IO; using System.Runtime.InteropServices; #if FEATURE_SERIALIZATION using System.Runtime.Serialization.Formatters.Binary; #endif // FEATURE_SERIALIZATION using System.Security.Permissions; namespace System.Security.Policy { ////// Base class from which all objects to be used as Evidence must derive /// [ComVisible(true)] [Serializable] public abstract class EvidenceBase { protected EvidenceBase() { #if FEATURE_SERIALIZATION // All objects to be used as evidence must be serializable. Make sure that any derived types // are marked serializable to enforce this, since the attribute does not inherit down to derived // classes. if (!GetType().IsSerializable) { throw new InvalidOperationException(Environment.GetResourceString("Policy_EvidenceMustBeSerializable")); } #endif // FEATURE_SERIALIZATION } ////// Since legacy evidence objects would be cloned by being serialized, the default implementation /// of EvidenceBase will do the same. /// [SecurityPermission(SecurityAction.Assert, SerializationFormatter = true)] [SecuritySafeCritical] public virtual EvidenceBase Clone() { #if FEATURE_SERIALIZATION using (MemoryStream memoryStream = new MemoryStream()) { BinaryFormatter formatter = new BinaryFormatter(); formatter.Serialize(memoryStream, this); memoryStream.Position = 0; return formatter.Deserialize(memoryStream) as EvidenceBase; } #else // !FEATURE_SERIALIZATION throw new NotImplementedException(); #endif // FEATURE_SERIALIZATION } } ////// Interface for types which wrap Whidbey evidence objects for compatibility with v4 evidence rules /// internal interface ILegacyEvidenceAdapter { object EvidenceObject { get; } Type EvidenceType { get; } } ////// Wrapper class to hold legacy evidence objects which do not derive from EvidenceBase, and allow /// them to be held in the Evidence collection which expects to maintain lists of EvidenceBase only /// [Serializable] internal sealed class LegacyEvidenceWrapper : EvidenceBase, ILegacyEvidenceAdapter { private object m_legacyEvidence; internal LegacyEvidenceWrapper(object legacyEvidence) { Contract.Assert(legacyEvidence != null); Contract.Assert(legacyEvidence.GetType() != typeof(EvidenceBase), "Attempt to wrap an EvidenceBase in a LegacyEvidenceWrapper"); Contract.Assert(legacyEvidence.GetType().IsSerializable, "legacyEvidence.GetType().IsSerializable"); m_legacyEvidence = legacyEvidence; } public object EvidenceObject { get { return m_legacyEvidence; } } public Type EvidenceType { get { return m_legacyEvidence.GetType(); } } public override bool Equals(object obj) { return m_legacyEvidence.Equals(obj); } public override int GetHashCode() { return m_legacyEvidence.GetHashCode(); } } ////// Pre-v4 versions of the runtime allow multiple pieces of evidence that all have the same type. /// This type wraps those evidence objects into a single type of list, allowing legacy code to continue /// to work with the Evidence collection that does not expect multiple evidences of the same type. /// /// This may not be limited to LegacyEvidenceWrappers, since it's valid for legacy code to add multiple /// objects of built-in evidence to an Evidence collection. The built-in evidence now derives from /// EvienceObject, so when the legacy code runs on v4, it may end up attempting to add multiple /// Hash evidences for intsance. /// [Serializable] internal sealed class LegacyEvidenceList : EvidenceBase, IEnumerable, ILegacyEvidenceAdapter { private List m_legacyEvidenceList = new List (); public object EvidenceObject { get { // We'll choose the first item in the list to represent us if we're forced to return only // one object. This can occur if multiple pieces of evidence are added via the legacy APIs, // and then the new APIs are used to retrieve that evidence. return m_legacyEvidenceList.Count > 0 ? m_legacyEvidenceList[0] : null; } } public Type EvidenceType { get { Contract.Assert(m_legacyEvidenceList.Count > 0, "No items in LegacyEvidenceList, cannot tell what type they are"); ILegacyEvidenceAdapter adapter = m_legacyEvidenceList[0] as ILegacyEvidenceAdapter; return adapter == null ? m_legacyEvidenceList[0].GetType() : adapter.EvidenceType; } } public void Add(EvidenceBase evidence) { Contract.Assert(evidence != null); Contract.Assert(m_legacyEvidenceList.Count == 0 || EvidenceType == evidence.GetType() || (evidence is LegacyEvidenceWrapper && (evidence as LegacyEvidenceWrapper).EvidenceType == EvidenceType), "LegacyEvidenceList must be ----geonous"); Contract.Assert(evidence.GetType() != typeof(LegacyEvidenceList), "Attempt to add a legacy evidence list to another legacy evidence list"); m_legacyEvidenceList.Add(evidence); } public IEnumerator GetEnumerator() { return m_legacyEvidenceList.GetEnumerator(); } IEnumerator System.Collections.IEnumerable.GetEnumerator() { return m_legacyEvidenceList.GetEnumerator(); } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.
Link Menu

This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- MetafileHeaderEmf.cs
- _ConnectStream.cs
- LoginDesigner.cs
- ThreadExceptionEvent.cs
- EntitySetRetriever.cs
- HorizontalAlignConverter.cs
- BufferedGraphics.cs
- ISO2022Encoding.cs
- GcSettings.cs
- OrderablePartitioner.cs
- BaseCodeDomTreeGenerator.cs
- DataGridTableCollection.cs
- CalendarBlackoutDatesCollection.cs
- ExecutorLocksHeldException.cs
- XmlSchemaObjectCollection.cs
- PropertySegmentSerializer.cs
- XmlAutoDetectWriter.cs
- TypeConverterHelper.cs
- ADMembershipProvider.cs
- RelationshipWrapper.cs
- StrokeCollectionDefaultValueFactory.cs
- ComIntegrationManifestGenerator.cs
- ImageCollectionEditor.cs
- CompilerGlobalScopeAttribute.cs
- Triplet.cs
- HTTPNotFoundHandler.cs
- WriterOutput.cs
- DataTrigger.cs
- ReadOnlyCollectionBase.cs
- AuthenticationSchemesHelper.cs
- SqlDataRecord.cs
- ContainerControl.cs
- __Filters.cs
- SecurityManager.cs
- TemplateControlCodeDomTreeGenerator.cs
- SuppressedPackageProperties.cs
- VectorAnimationBase.cs
- ReversePositionQuery.cs
- TemplateDefinition.cs
- DataAdapter.cs
- ParallelDesigner.cs
- TimeSpanValidatorAttribute.cs
- Automation.cs
- ProfileBuildProvider.cs
- IdentifierElement.cs
- PassportAuthentication.cs
- CompModSwitches.cs
- CollectionView.cs
- ImageAnimator.cs
- EventLogTraceListener.cs
- WindowsFormsHost.cs
- ProcessHostMapPath.cs
- TransportConfigurationTypeElementCollection.cs
- BooleanToVisibilityConverter.cs
- Stackframe.cs
- MD5HashHelper.cs
- EntityStoreSchemaGenerator.cs
- GeneralTransform3D.cs
- DataListItem.cs
- CellParagraph.cs
- XmlSchemaImport.cs
- DecoderFallback.cs
- SqlBooleanizer.cs
- PriorityQueue.cs
- MediaCommands.cs
- TemplateLookupAction.cs
- FillErrorEventArgs.cs
- ToolTipService.cs
- WindowsRegion.cs
- BitmapFrameEncode.cs
- ProfileGroupSettings.cs
- Type.cs
- Unit.cs
- PageThemeParser.cs
- CodeTypeReferenceSerializer.cs
- SqlRowUpdatedEvent.cs
- HTMLTextWriter.cs
- MarkupProperty.cs
- StringAnimationUsingKeyFrames.cs
- ControlLocalizer.cs
- HTTPNotFoundHandler.cs
- ToolCreatedEventArgs.cs
- RouteData.cs
- SQLInt32.cs
- BCryptSafeHandles.cs
- DecodeHelper.cs
- RequestDescription.cs
- ServicePerformanceCounters.cs
- LayoutSettings.cs
- ValidationContext.cs
- ControlIdConverter.cs
- _NetRes.cs
- MembershipSection.cs
- PDBReader.cs
- DescendentsWalkerBase.cs
- CookieHandler.cs
- CollectionBuilder.cs
- BaseCollection.cs
- ParagraphResult.cs
- DependencyObject.cs