//
// System.Runtime.Remoting.RemotingServices.cs
//
// Authors:
// Dietmar Maurer (dietmar@ximian.com)
// Lluis Sanchez Gual (lluis@ideary.com)
// Patrik Torstensson
//
// (C) 2001 Ximian, Inc. http://www.ximian.com
// Copyright (C) 2004, 2006 Novell, Inc (http://www.novell.com)
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
using System.Diagnostics;
using System.Text;
using System.Reflection;
using System.Threading;
using System.Collections;
using System.Runtime.Remoting.Messaging;
using System.Runtime.Remoting.Proxies;
using System.Runtime.Remoting.Channels;
using System.Runtime.Remoting.Contexts;
using System.Runtime.Remoting.Activation;
using System.Runtime.Remoting.Lifetime;
using System.Runtime.CompilerServices;
using System.Runtime.Serialization;
using System.Runtime.Serialization.Formatters.Binary;
using System.IO;
using System.Runtime.Remoting.Services;
using System.Security.Permissions;
using System.Runtime.ConstrainedExecution;
using System.Runtime.Serialization.Formatters;
namespace System.Runtime.Remoting{
[System.Runtime.InteropServices.ComVisible (true)]
public sealed class RemotingServices
{
// Holds the identities of the objects, using uri as index
static Hashtable uri_hash = new Hashtable ();
static BinaryFormatter _serializationFormatter;
static BinaryFormatter _deserializationFormatter;
static string app_id;
static readonly object app_id_lock = new object ();
static int next_id = 1;
const BindingFlags methodBindings = BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic;
static readonly MethodInfo FieldSetterMethod;
static readonly MethodInfo FieldGetterMethod;
// Holds information in xdomain calls. Names are short to minimize serialized size.
[Serializable]
class CACD {
public object d; /* call data */
public object c; /* call context */
}
static RemotingServices ()
{
RemotingSurrogateSelector surrogateSelector = new RemotingSurrogateSelector ();
StreamingContext context = new StreamingContext (StreamingContextStates.Remoting, null);
_serializationFormatter = new BinaryFormatter (surrogateSelector, context);
_deserializationFormatter = new BinaryFormatter (null, context);
_serializationFormatter.AssemblyFormat = FormatterAssemblyStyle.Full;
_deserializationFormatter.AssemblyFormat = FormatterAssemblyStyle.Full;
RegisterInternalChannels ();
CreateWellKnownServerIdentity (typeof(RemoteActivator), "RemoteActivationService.rem", WellKnownObjectMode.Singleton);
FieldSetterMethod = typeof(object).GetMethod ("FieldSetter", BindingFlags.NonPublic|BindingFlags.Instance);
FieldGetterMethod = typeof(object).GetMethod ("FieldGetter", BindingFlags.NonPublic|BindingFlags.Instance);
}
private RemotingServices () {}
[MethodImplAttribute(MethodImplOptions.InternalCall)]
internal extern static object InternalExecute (MethodBase method, Object obj,
Object[] parameters, out object [] out_args);
// Returns the actual implementation of @method in @type.
[MethodImplAttribute(MethodImplOptions.InternalCall)]
internal extern static MethodBase GetVirtualMethod (Type type, MethodBase method);
[ReliabilityContractAttribute (Consistency.WillNotCorruptState, Cer.Success)]
[MethodImplAttribute(MethodImplOptions.InternalCall)]
public extern static bool IsTransparentProxy (object proxy);
internal static IMethodReturnMessage InternalExecuteMessage (
MarshalByRefObject target, IMethodCallMessage reqMsg)
{
ReturnMessage result;
Type tt = target.GetType ();
MethodBase method;
if (reqMsg.MethodBase.DeclaringType == tt ||
reqMsg.MethodBase == FieldSetterMethod ||
reqMsg.MethodBase == FieldGetterMethod) {
method = reqMsg.MethodBase;
} else {
method = GetVirtualMethod (tt, reqMsg.MethodBase);
if (method == null)
throw new RemotingException (
String.Format ("Cannot resolve method {0}:{1}", tt, reqMsg.MethodName));
}
if (reqMsg.MethodBase.IsGenericMethod) {
Type[] genericArguments = reqMsg.MethodBase.GetGenericArguments ();
MethodInfo gmd = ((MethodInfo)method).GetGenericMethodDefinition ();
method = gmd.MakeGenericMethod (genericArguments);
}
object oldContext = CallContext.SetCurrentCallContext (reqMsg.LogicalCallContext);
try
{
object [] out_args;
object rval = InternalExecute (method, target, reqMsg.Args, out out_args);
// Collect parameters with Out flag from the request message
// FIXME: This can be done in the unmanaged side and will be
// more efficient
ParameterInfo[] parameters = method.GetParameters();
object[] returnArgs = new object [parameters.Length];
int n = 0;
int noa = 0;
foreach (ParameterInfo par in parameters)
{
if (par.IsOut && !par.ParameterType.IsByRef)
returnArgs [n++] = reqMsg.GetArg (par.Position);
else if (par.ParameterType.IsByRef)
returnArgs [n++] = out_args [noa++];
else
returnArgs [n++] = null;
}
result = new ReturnMessage (rval, returnArgs, n, CallContext.CreateLogicalCallContext (true), reqMsg);
}
catch (Exception e)
{
result = new ReturnMessage (e, reqMsg);
}
CallContext.RestoreCallContext (oldContext);
return result;
}
public static IMethodReturnMessage ExecuteMessage (
MarshalByRefObject target, IMethodCallMessage reqMsg)
{
if (IsTransparentProxy(target))
{
// Message must go through all chain of sinks
RealProxy rp = GetRealProxy (target);
return (IMethodReturnMessage) rp.Invoke (reqMsg);
}
else // Direct call
return InternalExecuteMessage (target, reqMsg);
}
[System.Runtime.InteropServices.ComVisible (true)]
public static object Connect (Type classToProxy, string url)
{
ObjRef objRef = new ObjRef (classToProxy, url, null);
return GetRemoteObject (objRef, classToProxy);
}
[System.Runtime.InteropServices.ComVisible (true)]
public static object Connect (Type classToProxy, string url, object data)
{
ObjRef objRef = new ObjRef (classToProxy, url, data);
return GetRemoteObject (objRef, classToProxy);
}
public static bool Disconnect (MarshalByRefObject obj)
{
if (obj == null) throw new ArgumentNullException ("obj");
ServerIdentity identity;
if (IsTransparentProxy (obj))
{
// CBOs are always accessed through a proxy, even in the server, so
// for server CBOs it is ok to disconnect a proxy
RealProxy proxy = GetRealProxy(obj);
if (proxy.GetProxiedType().IsContextful && (proxy.ObjectIdentity is ServerIdentity))
identity = proxy.ObjectIdentity as ServerIdentity;
else
throw new ArgumentException ("The obj parameter is a proxy.");
}
else {
identity = obj.ObjectIdentity;
obj.ObjectIdentity = null;
}
if (identity == null || !identity.IsConnected)
return false;
else
{
LifetimeServices.StopTrackingLifetime (identity);
DisposeIdentity (identity);
TrackingServices.NotifyDisconnectedObject (obj);
return true;
}
}
public static Type GetServerTypeForUri (string URI)
{
ServerIdentity ident = GetIdentityForUri (URI) as ServerIdentity;
if (ident == null) return null;
return ident.ObjectType;
}
public static string GetObjectUri (MarshalByRefObject obj)
{
Identity ident = GetObjectIdentity(obj);
if (ident is ClientIdentity) return ((ClientIdentity)ident).TargetUri;
else if (ident != null) return ident.ObjectUri;
else return null;
}
public static object Unmarshal (ObjRef objectRef)
{
return Unmarshal (objectRef, true);
}
public static object Unmarshal (ObjRef objectRef, bool fRefine)
{
Type classToProxy = fRefine ? objectRef.ServerType : typeof (MarshalByRefObject);
if (classToProxy == null) classToProxy = typeof (MarshalByRefObject);
if (objectRef.IsReferenceToWellKnow) {
object obj = GetRemoteObject (objectRef, classToProxy);
TrackingServices.NotifyUnmarshaledObject (obj, objectRef);
return obj;
}
else
{
object obj;
if (classToProxy.IsContextful) {
// Look for a ProxyAttribute
ProxyAttribute att = (ProxyAttribute) Attribute.GetCustomAttribute (classToProxy, typeof(ProxyAttribute), true);
if (att != null) {
obj = att.CreateProxy (objectRef, classToProxy, null, null).GetTransparentProxy();
TrackingServices.NotifyUnmarshaledObject (obj, objectRef);
return obj;
}
}
obj = GetProxyForRemoteObject (objectRef, classToProxy);
TrackingServices.NotifyUnmarshaledObject (obj, objectRef);
return obj;
}
}
public static ObjRef Marshal (MarshalByRefObject Obj)
{
return Marshal (Obj, null, null);
}
public static ObjRef Marshal (MarshalByRefObject Obj, string URI)
{
return Marshal (Obj, URI, null);
}
public static ObjRef Marshal (MarshalByRefObject Obj, string ObjURI, Type RequestedType)
{
if (IsTransparentProxy (Obj))
{
RealProxy proxy = RemotingServices.GetRealProxy (Obj);
Identity identity = proxy.ObjectIdentity;
if (identity != null)
{
if (proxy.GetProxiedType().IsContextful && !identity.IsConnected)
{
// Unregistered local contextbound object. Register now.
ClientActivatedIdentity cboundIdentity = (ClientActivatedIdentity)identity;
if (ObjURI == null) ObjURI = NewUri();
cboundIdentity.ObjectUri = ObjURI;
RegisterServerIdentity (cboundIdentity);
cboundIdentity.StartTrackingLifetime ((ILease)Obj.InitializeLifetimeService());
return cboundIdentity.CreateObjRef (RequestedType);
}
else if (ObjURI != null)
throw new RemotingException ("It is not possible marshal a proxy of a remote object.");
ObjRef or = proxy.ObjectIdentity.CreateObjRef (RequestedType);
TrackingServices.NotifyMarshaledObject (Obj, or);
return or;
}
}
if (RequestedType == null) RequestedType = Obj.GetType ();
if (ObjURI == null)
{
if (Obj.ObjectIdentity == null)
{
ObjURI = NewUri();
CreateClientActivatedServerIdentity (Obj, RequestedType, ObjURI);
}
}
else
{
ClientActivatedIdentity identity = GetIdentityForUri ("/" + ObjURI) as ClientActivatedIdentity;
if (identity == null || Obj != identity.GetServerObject())
CreateClientActivatedServerIdentity (Obj, RequestedType, ObjURI);
}
ObjRef oref;
if (IsTransparentProxy (Obj))
oref = RemotingServices.GetRealProxy (Obj).ObjectIdentity.CreateObjRef (RequestedType);
else
oref = Obj.CreateObjRef (RequestedType);
TrackingServices.NotifyMarshaledObject (Obj, oref);
return oref;
}
static string NewUri ()
{
if (app_id == null) {
lock (app_id_lock) {
if (app_id == null)
app_id = Guid.NewGuid().ToString().Replace('-', '_') + "/";
}
}
int n = Interlocked.Increment (ref next_id);
return app_id + Environment.TickCount.ToString("x") + "_" + n + ".rem";
}
[ReliabilityContractAttribute (Consistency.WillNotCorruptState, Cer.Success)]
public static RealProxy GetRealProxy (object proxy)
{
if (!IsTransparentProxy(proxy)) throw new RemotingException("Cannot get the real proxy from an object that is not a transparent proxy.");
return (RealProxy)((TransparentProxy)proxy)._rp;
}
public static MethodBase GetMethodBaseFromMethodMessage(IMethodMessage msg)
{
Type type = Type.GetType (msg.TypeName);
if (type == null)
throw new RemotingException ("Type '" + msg.TypeName + "' not found.");
return GetMethodBaseFromName (type, msg.MethodName, (Type[]) msg.MethodSignature);
}
internal static MethodBase GetMethodBaseFromName (Type type, string methodName, Type[] signature)
{
if (type.IsInterface) {
return FindInterfaceMethod (type, methodName, signature);
}
else {
MethodBase method = null;
if (signature == null)
method = type.GetMethod (methodName, methodBindings);
else
method = type.GetMethod (methodName, methodBindings, null, (Type[]) signature, null);
if (method != null)
return method;
if (methodName == "FieldSetter")
return FieldSetterMethod;
if (methodName == "FieldGetter")
return FieldGetterMethod;
if (signature == null)
return type.GetConstructor (methodBindings, null, Type.EmptyTypes, null);
else
return type.GetConstructor (methodBindings, null, signature, null);
}
}
static MethodBase FindInterfaceMethod (Type type, string methodName, Type[] signature)
{
MethodBase method = null;
if (signature == null)
method = type.GetMethod (methodName, methodBindings);
else
method = type.GetMethod (methodName, methodBindings, null, signature, null);
if (method != null) return method;
foreach (Type t in type.GetInterfaces ()) {
method = FindInterfaceMethod (t, methodName, signature);
if (method != null) return method;
}
return null;
}
public static void GetObjectData(object obj, SerializationInfo info, StreamingContext context)
{
if (obj == null) throw new ArgumentNullException ("obj");
ObjRef oref = Marshal ((MarshalByRefObject)obj);
oref.GetObjectData (info, context);
}
public static ObjRef GetObjRefForProxy(MarshalByRefObject obj)
{
Identity ident = GetObjectIdentity(obj);
if (ident == null) return null;
else return ident.CreateObjRef(null);
}
public static object GetLifetimeService (MarshalByRefObject obj)
{
if (obj == null) return null;
return obj.GetLifetimeService ();
}
public static IMessageSink GetEnvoyChainForProxy (MarshalByRefObject obj)
{
if (IsTransparentProxy(obj))
return ((ClientIdentity)GetRealProxy (obj).ObjectIdentity).EnvoySink;
else
throw new ArgumentException ("obj must be a proxy.","obj");
}
[MonoTODO]
[Conditional ("REMOTING_PERF")]
[Obsolete ("It existed for only internal use in .NET and unimplemented in mono")]
public static void LogRemotingStage (int stage)
{
throw new NotImplementedException ();
}
public static string GetSessionIdForMethodMessage(IMethodMessage msg)
{
// It seems that this it what MS returns.
return msg.Uri;
}
public static bool IsMethodOverloaded(IMethodMessage msg)
{
const BindingFlags bfinst = BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.Instance;
MonoType type = (MonoType) msg.MethodBase.DeclaringType;
return type.GetMethodsByName (msg.MethodName, bfinst, false, type).Length > 1;
}
public static bool IsObjectOutOfAppDomain(object tp)
{
MarshalByRefObject mbr = tp as MarshalByRefObject;
if (mbr == null)
return false;
// TODO: use internal call for better performance
Identity ident = GetObjectIdentity (mbr);
return ident is ClientIdentity;
}
public static bool IsObjectOutOfContext(object tp)
{
MarshalByRefObject mbr = tp as MarshalByRefObject;
if (mbr == null)
return false;
// TODO: use internal call for better performance
Identity ident = GetObjectIdentity (mbr);
if (ident == null) return false;
ServerIdentity sident = ident as ServerIdentity;
if (sident != null) return sident.Context != System.Threading.Thread.CurrentContext;
else return true;
}
public static bool IsOneWay(MethodBase method)
{
return method.IsDefined (typeof (OneWayAttribute), false);
}
internal static bool IsAsyncMessage(IMessage msg)
{
if (! (msg is MonoMethodMessage)) return false;
else if (((MonoMethodMessage)msg).IsAsync) return true;
else if (IsOneWay (((MonoMethodMessage)msg).MethodBase)) return true;
else return false;
}
public static void SetObjectUriForMarshal(MarshalByRefObject obj, string uri)
{
if (IsTransparentProxy (obj)) {
RealProxy proxy = RemotingServices.GetRealProxy(obj);
Identity identity = proxy.ObjectIdentity;
if (identity != null && !(identity is ServerIdentity) && !proxy.GetProxiedType().IsContextful)
throw new RemotingException ("SetObjectUriForMarshal method should only be called for MarshalByRefObjects that exist in the current AppDomain.");
}
Marshal (obj, uri);
}
#region Internal Methods
internal static object CreateClientProxy (ActivatedClientTypeEntry entry, object[] activationAttributes)
{
if (entry.ContextAttributes != null || activationAttributes != null)
{
ArrayList props = new ArrayList ();
if (entry.ContextAttributes != null) props.AddRange (entry.ContextAttributes);
if (activationAttributes != null) props.AddRange (activationAttributes);
return CreateClientProxy (entry.ObjectType, entry.ApplicationUrl, props.ToArray ());
}
else
return CreateClientProxy (entry.ObjectType, entry.ApplicationUrl, null);
}
internal static object CreateClientProxy (Type objectType, string url, object[] activationAttributes)
{
string activationUrl = url;
if (!activationUrl.EndsWith ("/"))
activationUrl += "/";
activationUrl += "RemoteActivationService.rem";
string objectUri;
GetClientChannelSinkChain (activationUrl, null, out objectUri);
RemotingProxy proxy = new RemotingProxy (objectType, activationUrl, activationAttributes);
return proxy.GetTransparentProxy();
}
internal static object CreateClientProxy (WellKnownClientTypeEntry entry)
{
return Connect (entry.ObjectType, entry.ObjectUrl, null);
}
internal static object CreateClientProxyForContextBound (Type type, object[] activationAttributes)
{
if (type.IsContextful)
{
// Look for a ProxyAttribute
ProxyAttribute att = (ProxyAttribute) Attribute.GetCustomAttribute (type, typeof(ProxyAttribute), true);
if (att != null)
return att.CreateInstance (type);
}
RemotingProxy proxy = new RemotingProxy (type, ChannelServices.CrossContextUrl, activationAttributes);
return proxy.GetTransparentProxy();
}
#if !NET_2_1
internal static object CreateClientProxyForComInterop (Type type)
{
Mono.Interop.ComInteropProxy proxy = Mono.Interop.ComInteropProxy.CreateProxy (type);
return proxy.GetTransparentProxy ();
}
#endif
internal static Identity GetIdentityForUri (string uri)
{
string normUri = GetNormalizedUri (uri);
lock (uri_hash)
{
Identity i = (Identity) uri_hash [normUri];
if (i == null) {
normUri = RemoveAppNameFromUri (uri);
if (normUri != null)
i = (Identity) uri_hash [normUri];
}
return i;
}
}
//
// If the specified uri starts with the application name,
// RemoveAppNameFromUri returns the uri w/out the leading
// application name, otherwise it returns null.
//
// Assumes that the uri is not normalized.
//
static string RemoveAppNameFromUri (string uri)
{
string name = RemotingConfiguration.ApplicationName;
if (name == null) return null;
name = "/" + name + "/";
if (uri.StartsWith (name))
return uri.Substring (name.Length);
else
return null;
}
internal static Identity GetObjectIdentity (MarshalByRefObject obj)
{
if (IsTransparentProxy(obj))
return GetRealProxy (obj).ObjectIdentity;
else
return obj.ObjectIdentity;
}
internal static ClientIdentity GetOrCreateClientIdentity(ObjRef objRef, Type proxyType, out object clientProxy)
{
// This method looks for an identity for the given url.
// If an identity is not found, it creates the identity and
// assigns it a proxy to the remote object.
// Creates the client sink chain for the given url or channelData.
// It will also get the object uri from the url.
object channelData = objRef.ChannelInfo != null ? objRef.ChannelInfo.ChannelData : null;
string objectUri;
IMessageSink sink = GetClientChannelSinkChain (objRef.URI, channelData, out objectUri);
if (objectUri == null) objectUri = objRef.URI;
lock (uri_hash)
{
clientProxy = null;
string uri = GetNormalizedUri (objRef.URI);
ClientIdentity identity = uri_hash [uri] as ClientIdentity;
if (identity != null)
{
// Object already registered
clientProxy = identity.ClientProxy;
if (clientProxy != null) return identity;
// The proxy has just been GCed, so its identity cannot
// be reused. Just dispose it.
DisposeIdentity (identity);
}
// Creates an identity and a proxy for the remote object
identity = new ClientIdentity (objectUri, objRef);
identity.ChannelSink = sink;
// Registers the identity
uri_hash [uri] = identity;
if (proxyType != null)
{
RemotingProxy proxy = new RemotingProxy (proxyType, identity);
CrossAppDomainSink cds = sink as CrossAppDomainSink;
if (cds != null)
proxy.SetTargetDomain (cds.TargetDomainId);
clientProxy = proxy.GetTransparentProxy();
identity.ClientProxy = (MarshalByRefObject) clientProxy;
}
return identity;
}
}
static IMessageSink GetClientChannelSinkChain(string url, object channelData, out string objectUri)
{
IMessageSink sink = ChannelServices.CreateClientChannelSinkChain (url, channelData, out objectUri);
if (sink == null)
{
if (url != null)
{
string msg = String.Format ("Cannot create channel sink to connect to URL {0}. An appropriate channel has probably not been registered.", url);
throw new RemotingException (msg);
}
else
{
string msg = String.Format ("Cannot create channel sink to connect to the remote object. An appropriate channel has probably not been registered.", url);
throw new RemotingException (msg);
}
}
return sink;
}
internal static ClientActivatedIdentity CreateContextBoundObjectIdentity(Type objectType)
{
ClientActivatedIdentity identity = new ClientActivatedIdentity (null, objectType);
identity.ChannelSink = ChannelServices.CrossContextChannel;
return identity;
}
internal static ClientActivatedIdentity CreateClientActivatedServerIdentity(MarshalByRefObject realObject, Type objectType, string objectUri)
{
ClientActivatedIdentity identity = new ClientActivatedIdentity (objectUri, objectType);
identity.AttachServerObject (realObject, Context.DefaultContext);
RegisterServerIdentity (identity);
identity.StartTrackingLifetime ((ILease)realObject.InitializeLifetimeService ());
return identity;
}
internal static ServerIdentity CreateWellKnownServerIdentity(Type objectType, string objectUri, WellKnownObjectMode mode)
{
ServerIdentity identity;
if (mode == WellKnownObjectMode.SingleCall)
identity = new SingleCallIdentity(objectUri, Context.DefaultContext, objectType);
else
identity = new SingletonIdentity(objectUri, Context.DefaultContext, objectType);
RegisterServerIdentity (identity);
return identity;
}
private static void RegisterServerIdentity(ServerIdentity identity)
{
lock (uri_hash)
{
if (uri_hash.ContainsKey (identity.ObjectUri))
throw new RemotingException ("Uri already in use: " + identity.ObjectUri + ".");
uri_hash[identity.ObjectUri] = identity;
}
}
internal static object GetProxyForRemoteObject (ObjRef objref, Type classToProxy)
{
ClientActivatedIdentity identity = GetIdentityForUri (objref.URI) as ClientActivatedIdentity;
if (identity != null) return identity.GetServerObject ();
else return GetRemoteObject (objref, classToProxy);
}
internal static object GetRemoteObject(ObjRef objRef, Type proxyType)
{
object proxy;
GetOrCreateClientIdentity (objRef, proxyType, out proxy);
return proxy;
}
// This method is called by the runtime
internal static object GetServerObject (string uri)
{
ClientActivatedIdentity identity = GetIdentityForUri (uri) as ClientActivatedIdentity;
if (identity == null) throw new RemotingException ("Server for uri '" + uri + "' not found");
return identity.GetServerObject ();
}
// This method is called by the runtime
[SecurityPermission (SecurityAction.Assert, SerializationFormatter = true)] // FIXME: to be reviewed
internal static byte[] SerializeCallData (object obj)
{
LogicalCallContext ctx = CallContext.CreateLogicalCallContext (false);
if (ctx != null) {
CACD cad = new CACD ();
cad.d = obj;
cad.c = ctx;
obj = cad;
}
if (obj == null) return null;
MemoryStream ms = new MemoryStream ();
_serializationFormatter.Serialize (ms, obj);
return ms.ToArray ();
}
// This method is called by the runtime
[SecurityPermission (SecurityAction.Assert, SerializationFormatter = true)] // FIXME: to be reviewed
internal static object DeserializeCallData (byte[] array)
{
if (array == null) return null;
MemoryStream ms = new MemoryStream (array);
object obj = _deserializationFormatter.Deserialize (ms);
if (obj is CACD) {
CACD cad = (CACD) obj;
obj = cad.d;
CallContext.UpdateCurrentCallContext ((LogicalCallContext) cad.c);
}
return obj;
}
// This method is called by the runtime
[SecurityPermission (SecurityAction.Assert, SerializationFormatter = true)] // FIXME: to be reviewed
internal static byte[] SerializeExceptionData (Exception ex)
{
try {
int retry = 4;
do {
try {
MemoryStream ms = new MemoryStream ();
_serializationFormatter.Serialize (ms, ex);
return ms.ToArray ();
}
catch (Exception e) {
if (e is ThreadAbortException) {
Thread.ResetAbort ();
retry = 5;
ex = e;
}
else if (retry == 2) {
ex = new Exception ();
ex.SetMessage (e.Message);
ex.SetStackTrace (e.StackTrace);
}
else
ex = e;
}
retry--;
}
while (retry > 0);
return null;
}
catch (Exception tex)
{
byte[] data = SerializeExceptionData (tex);
Thread.ResetAbort ();
return data;
}
}
internal static object GetDomainProxy(AppDomain domain)
{
byte[] data = null;
Context currentContext = Thread.CurrentContext;
try
{
data = (byte[])AppDomain.InvokeInDomain (domain, typeof (AppDomain).GetMethod ("GetMarshalledDomainObjRef", BindingFlags.Instance|BindingFlags.NonPublic), domain, null);
}
finally
{
AppDomain.InternalSetContext (currentContext);
}
byte[] data_copy = new byte [data.Length];
data.CopyTo (data_copy, 0);
MemoryStream stream = new MemoryStream (data_copy);
ObjRef appref = (ObjRef) CADSerializer.DeserializeObject (stream);
return (AppDomain) RemotingServices.Unmarshal(appref);
}
private static void RegisterInternalChannels()
{
CrossAppDomainChannel.RegisterCrossAppDomainChannel();
}
internal static void DisposeIdentity (Identity ident)
{
lock (uri_hash)
{
if (!ident.Disposed) {
ClientIdentity clientId = ident as ClientIdentity;
if (clientId != null)
uri_hash.Remove (GetNormalizedUri (clientId.TargetUri));
else
uri_hash.Remove (ident.ObjectUri);
ident.Disposed = true;
}
}
}
internal static Identity GetMessageTargetIdentity (IMessage msg)
{
// Returns the identity where the message is sent
if (msg is IInternalMessage)
return ((IInternalMessage)msg).TargetIdentity;
lock (uri_hash)
{
string uri = GetNormalizedUri (((IMethodMessage)msg).Uri);
return uri_hash [uri] as ServerIdentity;
}
}
internal static void SetMessageTargetIdentity (IMessage msg, Identity ident)
{
if (msg is IInternalMessage)
((IInternalMessage)msg).TargetIdentity = ident;
}
internal static bool UpdateOutArgObject (ParameterInfo pi, object local, object remote)
{
if (pi.ParameterType.IsArray && ((Array)local).Rank == 1)
{
Array alocal = (Array) local;
if (alocal.Rank == 1)
{
Array.Copy ((Array) remote, alocal, alocal.Length);
return true;
}
else
{
// TODO
}
}
return false;
}
static string GetNormalizedUri (string uri)
{
if (uri.StartsWith ("/")) return uri.Substring (1);
else return uri;
}
#endregion
}
}
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