585 lines
24 KiB
C#
585 lines
24 KiB
C#
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//------------------------------------------------------------
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// Copyright (c) Microsoft Corporation. All rights reserved.
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//------------------------------------------------------------
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namespace System.Runtime.Serialization
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{
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using System;
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using System.IO;
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using System.Xml;
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using System.Security;
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using System.Collections;
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using System.Security.Permissions;
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using System.Runtime.CompilerServices;
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using System.Runtime.Serialization.Formatters;
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using System.Collections.Generic;
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#if !NO_CONFIGURATION
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using System.Runtime.Serialization.Configuration;
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#endif
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using System.Reflection;
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public sealed class NetDataContractSerializer : XmlObjectSerializer, IFormatter
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{
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XmlDictionaryString rootName;
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XmlDictionaryString rootNamespace;
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StreamingContext context;
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SerializationBinder binder;
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ISurrogateSelector surrogateSelector;
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int maxItemsInObjectGraph;
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bool ignoreExtensionDataObject;
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FormatterAssemblyStyle assemblyFormat;
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DataContract cachedDataContract;
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static Hashtable typeNameCache = new Hashtable();
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public NetDataContractSerializer()
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: this(new StreamingContext(StreamingContextStates.All))
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{
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}
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public NetDataContractSerializer(StreamingContext context)
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: this(context, Int32.MaxValue, false, FormatterAssemblyStyle.Full, null)
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{
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}
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public NetDataContractSerializer(StreamingContext context,
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int maxItemsInObjectGraph,
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bool ignoreExtensionDataObject,
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FormatterAssemblyStyle assemblyFormat,
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ISurrogateSelector surrogateSelector)
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{
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Initialize(context, maxItemsInObjectGraph, ignoreExtensionDataObject, assemblyFormat, surrogateSelector);
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}
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public NetDataContractSerializer(string rootName, string rootNamespace)
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: this(rootName, rootNamespace, new StreamingContext(StreamingContextStates.All), Int32.MaxValue, false, FormatterAssemblyStyle.Full, null)
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{
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}
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public NetDataContractSerializer(string rootName, string rootNamespace,
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StreamingContext context,
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int maxItemsInObjectGraph,
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bool ignoreExtensionDataObject,
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FormatterAssemblyStyle assemblyFormat,
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ISurrogateSelector surrogateSelector)
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{
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XmlDictionary dictionary = new XmlDictionary(2);
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Initialize(dictionary.Add(rootName), dictionary.Add(DataContract.GetNamespace(rootNamespace)), context, maxItemsInObjectGraph, ignoreExtensionDataObject, assemblyFormat, surrogateSelector);
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}
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public NetDataContractSerializer(XmlDictionaryString rootName, XmlDictionaryString rootNamespace)
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: this(rootName, rootNamespace, new StreamingContext(StreamingContextStates.All), Int32.MaxValue, false, FormatterAssemblyStyle.Full, null)
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{
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}
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public NetDataContractSerializer(XmlDictionaryString rootName, XmlDictionaryString rootNamespace,
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StreamingContext context,
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int maxItemsInObjectGraph,
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bool ignoreExtensionDataObject,
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FormatterAssemblyStyle assemblyFormat,
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ISurrogateSelector surrogateSelector)
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{
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Initialize(rootName, rootNamespace, context, maxItemsInObjectGraph, ignoreExtensionDataObject, assemblyFormat, surrogateSelector);
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}
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void Initialize(StreamingContext context,
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int maxItemsInObjectGraph,
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bool ignoreExtensionDataObject,
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FormatterAssemblyStyle assemblyFormat,
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ISurrogateSelector surrogateSelector)
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{
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this.context = context;
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if (maxItemsInObjectGraph < 0)
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throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ArgumentOutOfRangeException("maxItemsInObjectGraph", SR.GetString(SR.ValueMustBeNonNegative)));
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this.maxItemsInObjectGraph = maxItemsInObjectGraph;
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this.ignoreExtensionDataObject = ignoreExtensionDataObject;
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this.surrogateSelector = surrogateSelector;
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this.AssemblyFormat = assemblyFormat;
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}
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void Initialize(XmlDictionaryString rootName, XmlDictionaryString rootNamespace,
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StreamingContext context,
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int maxItemsInObjectGraph,
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bool ignoreExtensionDataObject,
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FormatterAssemblyStyle assemblyFormat,
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ISurrogateSelector surrogateSelector)
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{
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Initialize(context, maxItemsInObjectGraph, ignoreExtensionDataObject, assemblyFormat, surrogateSelector);
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this.rootName = rootName;
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this.rootNamespace = rootNamespace;
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}
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static bool? unsafeTypeForwardingEnabled;
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internal static bool UnsafeTypeForwardingEnabled
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{
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[Fx.Tag.SecurityNote(Critical = "Calls Security Critical method NetDataContractSerializerSection.TryUnsafeGetSection.", Safe = "The ConfigSection instance is not leaked.")]
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[SecuritySafeCritical]
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get
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{
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if (unsafeTypeForwardingEnabled == null)
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{
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#if NO_CONFIGURATION
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unsafeTypeForwardingEnabled = false;
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#else
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NetDataContractSerializerSection section;
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if (NetDataContractSerializerSection.TryUnsafeGetSection(out section))
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{
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unsafeTypeForwardingEnabled = section.EnableUnsafeTypeForwarding;
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}
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else
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{
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unsafeTypeForwardingEnabled = false;
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}
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#endif
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}
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Fx.Assert(unsafeTypeForwardingEnabled != null, "unsafeTypeForwardingEnabled should not be null.");
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return unsafeTypeForwardingEnabled.Value;
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}
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}
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public StreamingContext Context
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{
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get { return context; }
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set { context = value; }
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}
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public SerializationBinder Binder
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{
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get { return binder; }
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set { binder = value; }
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}
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public ISurrogateSelector SurrogateSelector
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{
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get { return surrogateSelector; }
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set { surrogateSelector = value; }
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}
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public FormatterAssemblyStyle AssemblyFormat
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{
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get { return assemblyFormat; }
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set
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{
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if (value != FormatterAssemblyStyle.Full && value != FormatterAssemblyStyle.Simple)
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throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ArgumentException(SR.GetString(SR.InvalidAssemblyFormat, value)));
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assemblyFormat = value;
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}
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}
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public int MaxItemsInObjectGraph
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{
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get { return maxItemsInObjectGraph; }
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}
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public bool IgnoreExtensionDataObject
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{
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get { return ignoreExtensionDataObject; }
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}
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public void Serialize(Stream stream, object graph)
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{
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base.WriteObject(stream, graph);
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}
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public object Deserialize(Stream stream)
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{
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return base.ReadObject(stream);
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}
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internal override void InternalWriteObject(XmlWriterDelegator writer, object graph)
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{
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Hashtable surrogateDataContracts = null;
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DataContract contract = GetDataContract(graph, ref surrogateDataContracts);
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InternalWriteStartObject(writer, graph, contract);
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InternalWriteObjectContent(writer, graph, contract, surrogateDataContracts);
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InternalWriteEndObject(writer);
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}
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public override void WriteObject(XmlWriter writer, object graph)
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{
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WriteObjectHandleExceptions(new XmlWriterDelegator(writer), graph);
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}
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public override void WriteStartObject(XmlWriter writer, object graph)
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{
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WriteStartObjectHandleExceptions(new XmlWriterDelegator(writer), graph);
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}
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public override void WriteObjectContent(XmlWriter writer, object graph)
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{
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WriteObjectContentHandleExceptions(new XmlWriterDelegator(writer), graph);
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}
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public override void WriteEndObject(XmlWriter writer)
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{
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WriteEndObjectHandleExceptions(new XmlWriterDelegator(writer));
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}
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public override void WriteStartObject(XmlDictionaryWriter writer, object graph)
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{
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WriteStartObjectHandleExceptions(new XmlWriterDelegator(writer), graph);
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}
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internal override void InternalWriteStartObject(XmlWriterDelegator writer, object graph)
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{
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Hashtable surrogateDataContracts = null;
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DataContract contract = GetDataContract(graph, ref surrogateDataContracts);
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InternalWriteStartObject(writer, graph, contract);
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}
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void InternalWriteStartObject(XmlWriterDelegator writer, object graph, DataContract contract)
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{
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WriteRootElement(writer, contract, rootName, rootNamespace, CheckIfNeedsContractNsAtRoot(rootName, rootNamespace, contract));
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}
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public override void WriteObjectContent(XmlDictionaryWriter writer, object graph)
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{
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WriteObjectContentHandleExceptions(new XmlWriterDelegator(writer), graph);
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}
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internal override void InternalWriteObjectContent(XmlWriterDelegator writer, object graph)
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{
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Hashtable surrogateDataContracts = null;
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DataContract contract = GetDataContract(graph, ref surrogateDataContracts);
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InternalWriteObjectContent(writer, graph, contract, surrogateDataContracts);
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}
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void InternalWriteObjectContent(XmlWriterDelegator writer, object graph, DataContract contract, Hashtable surrogateDataContracts)
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{
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if (MaxItemsInObjectGraph == 0)
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throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(XmlObjectSerializer.CreateSerializationException(SR.GetString(SR.ExceededMaxItemsQuota, MaxItemsInObjectGraph)));
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if (IsRootXmlAny(rootName, contract))
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{
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throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(XmlObjectSerializer.CreateSerializationException(SR.GetString(SR.IsAnyNotSupportedByNetDataContractSerializer, contract.UnderlyingType)));
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}
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else if (graph == null)
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{
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WriteNull(writer);
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}
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else
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{
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Type graphType = graph.GetType();
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if (contract.UnderlyingType != graphType)
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contract = GetDataContract(graph, ref surrogateDataContracts);
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XmlObjectSerializerWriteContext context = null;
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if (contract.CanContainReferences)
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{
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context = XmlObjectSerializerWriteContext.CreateContext(this, surrogateDataContracts);
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context.HandleGraphAtTopLevel(writer, graph, contract);
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}
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WriteClrTypeInfo(writer, contract, binder);
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contract.WriteXmlValue(writer, graph, context);
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}
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}
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// Update the overloads whenever you are changing this method
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internal static void WriteClrTypeInfo(XmlWriterDelegator writer, DataContract dataContract, SerializationBinder binder)
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{
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if (!dataContract.IsISerializable && !(dataContract is SurrogateDataContract))
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{
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TypeInformation typeInformation = null;
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Type clrType = dataContract.OriginalUnderlyingType;
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string clrTypeName = null;
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string clrAssemblyName = null;
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if (binder != null)
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{
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binder.BindToName(clrType, out clrAssemblyName, out clrTypeName);
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}
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if (clrTypeName == null)
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{
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typeInformation = NetDataContractSerializer.GetTypeInformation(clrType);
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clrTypeName = typeInformation.FullTypeName;
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}
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if (clrAssemblyName == null)
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{
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clrAssemblyName = (typeInformation == null) ?
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NetDataContractSerializer.GetTypeInformation(clrType).AssemblyString :
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typeInformation.AssemblyString;
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// Throw in the [TypeForwardedFrom] case to prevent a partially trusted assembly from forwarding itself to an assembly with higher privileges
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if (!UnsafeTypeForwardingEnabled && !clrType.Assembly.IsFullyTrusted && !IsAssemblyNameForwardingSafe(clrType.Assembly.FullName, clrAssemblyName))
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{
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throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(XmlObjectSerializer.CreateSerializationException(SR.GetString(SR.TypeCannotBeForwardedFrom, DataContract.GetClrTypeFullName(clrType), clrType.Assembly.FullName, clrAssemblyName)));
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}
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}
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WriteClrTypeInfo(writer, clrTypeName, clrAssemblyName);
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}
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}
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// Update the overloads whenever you are changing this method
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internal static void WriteClrTypeInfo(XmlWriterDelegator writer, Type dataContractType, SerializationBinder binder, string defaultClrTypeName, string defaultClrAssemblyName)
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{
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string clrTypeName = null;
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string clrAssemblyName = null;
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if (binder != null)
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{
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binder.BindToName(dataContractType, out clrAssemblyName, out clrTypeName);
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}
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if (clrTypeName == null)
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{
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clrTypeName = defaultClrTypeName;
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}
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if (clrAssemblyName == null)
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{
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clrAssemblyName = defaultClrAssemblyName;
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}
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WriteClrTypeInfo(writer, clrTypeName, clrAssemblyName);
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}
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// Update the overloads whenever you are changing this method
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internal static void WriteClrTypeInfo(XmlWriterDelegator writer, Type dataContractType, SerializationBinder binder, SerializationInfo serInfo)
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{
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TypeInformation typeInformation = null;
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string clrTypeName = null;
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string clrAssemblyName = null;
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if (binder != null)
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{
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binder.BindToName(dataContractType, out clrAssemblyName, out clrTypeName);
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}
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if (clrTypeName == null)
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{
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if (serInfo.IsFullTypeNameSetExplicit)
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{
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clrTypeName = serInfo.FullTypeName;
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}
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else
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{
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typeInformation = NetDataContractSerializer.GetTypeInformation(serInfo.ObjectType);
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clrTypeName = typeInformation.FullTypeName;
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}
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}
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if (clrAssemblyName == null)
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{
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if (serInfo.IsAssemblyNameSetExplicit)
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{
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clrAssemblyName = serInfo.AssemblyName;
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}
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else
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{
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clrAssemblyName = (typeInformation == null) ?
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NetDataContractSerializer.GetTypeInformation(serInfo.ObjectType).AssemblyString :
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typeInformation.AssemblyString;
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}
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}
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WriteClrTypeInfo(writer, clrTypeName, clrAssemblyName);
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}
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static void WriteClrTypeInfo(XmlWriterDelegator writer, string clrTypeName, string clrAssemblyName)
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{
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if (clrTypeName != null)
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writer.WriteAttributeString(Globals.SerPrefix, DictionaryGlobals.ClrTypeLocalName, DictionaryGlobals.SerializationNamespace, DataContract.GetClrTypeString(clrTypeName));
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if (clrAssemblyName != null)
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|
|
writer.WriteAttributeString(Globals.SerPrefix, DictionaryGlobals.ClrAssemblyLocalName, DictionaryGlobals.SerializationNamespace, DataContract.GetClrTypeString(clrAssemblyName));
|
||
|
|
}
|
||
|
|
|
||
|
|
public override void WriteEndObject(XmlDictionaryWriter writer)
|
||
|
|
{
|
||
|
|
WriteEndObjectHandleExceptions(new XmlWriterDelegator(writer));
|
||
|
|
}
|
||
|
|
|
||
|
|
internal override void InternalWriteEndObject(XmlWriterDelegator writer)
|
||
|
|
{
|
||
|
|
writer.WriteEndElement();
|
||
|
|
}
|
||
|
|
|
||
|
|
public override object ReadObject(XmlReader reader)
|
||
|
|
{
|
||
|
|
return ReadObjectHandleExceptions(new XmlReaderDelegator(reader), true /*verifyObjectName*/);
|
||
|
|
}
|
||
|
|
|
||
|
|
public override object ReadObject(XmlReader reader, bool verifyObjectName)
|
||
|
|
{
|
||
|
|
return ReadObjectHandleExceptions(new XmlReaderDelegator(reader), verifyObjectName);
|
||
|
|
}
|
||
|
|
|
||
|
|
public override bool IsStartObject(XmlReader reader)
|
||
|
|
{
|
||
|
|
return IsStartObjectHandleExceptions(new XmlReaderDelegator(reader));
|
||
|
|
}
|
||
|
|
|
||
|
|
public override object ReadObject(XmlDictionaryReader reader, bool verifyObjectName)
|
||
|
|
{
|
||
|
|
return ReadObjectHandleExceptions(new XmlReaderDelegator(reader), verifyObjectName);
|
||
|
|
}
|
||
|
|
|
||
|
|
public override bool IsStartObject(XmlDictionaryReader reader)
|
||
|
|
{
|
||
|
|
return IsStartObjectHandleExceptions(new XmlReaderDelegator(reader));
|
||
|
|
}
|
||
|
|
|
||
|
|
internal override object InternalReadObject(XmlReaderDelegator xmlReader, bool verifyObjectName)
|
||
|
|
{
|
||
|
|
if (MaxItemsInObjectGraph == 0)
|
||
|
|
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(XmlObjectSerializer.CreateSerializationException(SR.GetString(SR.ExceededMaxItemsQuota, MaxItemsInObjectGraph)));
|
||
|
|
|
||
|
|
// verifyObjectName has no effect in SharedType mode
|
||
|
|
if (!IsStartElement(xmlReader))
|
||
|
|
{
|
||
|
|
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(XmlObjectSerializer.CreateSerializationExceptionWithReaderDetails(SR.GetString(SR.ExpectingElementAtDeserialize, XmlNodeType.Element), xmlReader));
|
||
|
|
}
|
||
|
|
|
||
|
|
XmlObjectSerializerReadContext context = XmlObjectSerializerReadContext.CreateContext(this);
|
||
|
|
return context.InternalDeserialize(xmlReader, null, null, null);
|
||
|
|
}
|
||
|
|
|
||
|
|
internal override bool InternalIsStartObject(XmlReaderDelegator reader)
|
||
|
|
{
|
||
|
|
return IsStartElement(reader);
|
||
|
|
}
|
||
|
|
|
||
|
|
internal DataContract GetDataContract(object obj, ref Hashtable surrogateDataContracts)
|
||
|
|
{
|
||
|
|
return GetDataContract(((obj == null) ? Globals.TypeOfObject : obj.GetType()), ref surrogateDataContracts);
|
||
|
|
}
|
||
|
|
|
||
|
|
internal DataContract GetDataContract(Type type, ref Hashtable surrogateDataContracts)
|
||
|
|
{
|
||
|
|
return GetDataContract(type.TypeHandle, type, ref surrogateDataContracts);
|
||
|
|
}
|
||
|
|
|
||
|
|
internal DataContract GetDataContract(RuntimeTypeHandle typeHandle, Type type, ref Hashtable surrogateDataContracts)
|
||
|
|
{
|
||
|
|
DataContract dataContract = GetDataContractFromSurrogateSelector(surrogateSelector, Context, typeHandle, type, ref surrogateDataContracts);
|
||
|
|
if (dataContract != null)
|
||
|
|
return dataContract;
|
||
|
|
|
||
|
|
if (cachedDataContract == null)
|
||
|
|
{
|
||
|
|
dataContract = DataContract.GetDataContract(typeHandle, type, SerializationMode.SharedType);
|
||
|
|
cachedDataContract = dataContract;
|
||
|
|
return dataContract;
|
||
|
|
}
|
||
|
|
|
||
|
|
DataContract currentCachedDataContract = cachedDataContract;
|
||
|
|
if (currentCachedDataContract.UnderlyingType.TypeHandle.Equals(typeHandle))
|
||
|
|
return currentCachedDataContract;
|
||
|
|
|
||
|
|
return DataContract.GetDataContract(typeHandle, type, SerializationMode.SharedType);
|
||
|
|
}
|
||
|
|
|
||
|
|
[Fx.Tag.SecurityNote(Critical = "Calls the critical methods of ISurrogateSelector", Safe = "Demands for FullTrust")]
|
||
|
|
[SecuritySafeCritical]
|
||
|
|
[PermissionSet(SecurityAction.Demand, Unrestricted = true)]
|
||
|
|
[MethodImpl(MethodImplOptions.NoInlining)]
|
||
|
|
static ISerializationSurrogate GetSurrogate(Type type, ISurrogateSelector surrogateSelector, StreamingContext context)
|
||
|
|
{
|
||
|
|
ISurrogateSelector surrogateSelectorNotUsed;
|
||
|
|
return surrogateSelector.GetSurrogate(type, context, out surrogateSelectorNotUsed);
|
||
|
|
}
|
||
|
|
|
||
|
|
internal static DataContract GetDataContractFromSurrogateSelector(ISurrogateSelector surrogateSelector, StreamingContext context, RuntimeTypeHandle typeHandle, Type type, ref Hashtable surrogateDataContracts)
|
||
|
|
{
|
||
|
|
if (surrogateSelector == null)
|
||
|
|
return null;
|
||
|
|
|
||
|
|
if (type == null)
|
||
|
|
type = Type.GetTypeFromHandle(typeHandle);
|
||
|
|
DataContract builtInDataContract = DataContract.GetBuiltInDataContract(type);
|
||
|
|
if (builtInDataContract != null)
|
||
|
|
return builtInDataContract;
|
||
|
|
if (surrogateDataContracts != null)
|
||
|
|
{
|
||
|
|
DataContract cachedSurrogateContract = (DataContract)surrogateDataContracts[type];
|
||
|
|
if (cachedSurrogateContract != null)
|
||
|
|
return cachedSurrogateContract;
|
||
|
|
}
|
||
|
|
DataContract surrogateContract = null;
|
||
|
|
ISerializationSurrogate surrogate = GetSurrogate(type, surrogateSelector, context);
|
||
|
|
if (surrogate != null)
|
||
|
|
surrogateContract = new SurrogateDataContract(type, surrogate);
|
||
|
|
else if (type.IsArray)
|
||
|
|
{
|
||
|
|
Type elementType = type.GetElementType();
|
||
|
|
DataContract itemContract = GetDataContractFromSurrogateSelector(surrogateSelector, context, elementType.TypeHandle, elementType, ref surrogateDataContracts);
|
||
|
|
if (itemContract == null)
|
||
|
|
itemContract = DataContract.GetDataContract(elementType.TypeHandle, elementType, SerializationMode.SharedType);
|
||
|
|
surrogateContract = new CollectionDataContract(type, itemContract);
|
||
|
|
}
|
||
|
|
if (surrogateContract != null)
|
||
|
|
{
|
||
|
|
if (surrogateDataContracts == null)
|
||
|
|
surrogateDataContracts = new Hashtable();
|
||
|
|
surrogateDataContracts.Add(type, surrogateContract);
|
||
|
|
return surrogateContract;
|
||
|
|
}
|
||
|
|
return null;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
internal static TypeInformation GetTypeInformation(Type type)
|
||
|
|
{
|
||
|
|
TypeInformation typeInformation = null;
|
||
|
|
object typeInformationObject = typeNameCache[type];
|
||
|
|
if (typeInformationObject == null)
|
||
|
|
{
|
||
|
|
bool hasTypeForwardedFrom;
|
||
|
|
string assemblyName = DataContract.GetClrAssemblyName(type, out hasTypeForwardedFrom);
|
||
|
|
typeInformation = new TypeInformation(DataContract.GetClrTypeFullNameUsingTypeForwardedFromAttribute(type), assemblyName, hasTypeForwardedFrom);
|
||
|
|
lock (typeNameCache)
|
||
|
|
{
|
||
|
|
typeNameCache[type] = typeInformation;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
typeInformation = (TypeInformation)typeInformationObject;
|
||
|
|
}
|
||
|
|
return typeInformation;
|
||
|
|
}
|
||
|
|
|
||
|
|
static bool IsAssemblyNameForwardingSafe(string originalAssemblyName, string newAssemblyName)
|
||
|
|
{
|
||
|
|
if (originalAssemblyName == newAssemblyName)
|
||
|
|
{
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
AssemblyName originalAssembly = new AssemblyName(originalAssemblyName);
|
||
|
|
AssemblyName newAssembly = new AssemblyName(newAssemblyName);
|
||
|
|
|
||
|
|
// mscorlib will get loaded by the runtime regardless of its string casing or its public key token,
|
||
|
|
// so setting the assembly name to mscorlib is always unsafe
|
||
|
|
if (string.Equals(newAssembly.Name, Globals.MscorlibAssemblySimpleName, StringComparison.OrdinalIgnoreCase) ||
|
||
|
|
string.Equals(newAssembly.Name, Globals.MscorlibFileName, StringComparison.OrdinalIgnoreCase))
|
||
|
|
{
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
return IsPublicKeyTokenForwardingSafe(originalAssembly.GetPublicKeyToken(), newAssembly.GetPublicKeyToken());
|
||
|
|
}
|
||
|
|
|
||
|
|
static bool IsPublicKeyTokenForwardingSafe(byte[] sourceToken, byte[] destinationToken)
|
||
|
|
{
|
||
|
|
if (sourceToken == null || destinationToken == null || sourceToken.Length == 0 || destinationToken.Length == 0 || sourceToken.Length != destinationToken.Length)
|
||
|
|
{
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
for (int i = 0; i < sourceToken.Length; i++)
|
||
|
|
{
|
||
|
|
if (sourceToken[i] != destinationToken[i])
|
||
|
|
{
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|