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//
// Message.cs
//
// Author:
// Atsushi Enomoto <atsushi@ximian.com>
//
// Copyright (C) 2005-2006 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;
using System.IO;
using System.Runtime.Serialization;
using System.Xml;
using System.Xml.Schema;
using Mono.Xml.XPath;
namespace System.ServiceModel.Channels
{
public abstract class Message : IDisposable
{
bool disposed;
string body_id;
protected Message () {
State = MessageState.Created;
}
public abstract MessageHeaders Headers { get; }
internal string BodyId {
get { return body_id; }
set { body_id = value; }
}
public virtual bool IsEmpty {
get { return false; }
}
public virtual bool IsFault {
get { return false; }
}
public abstract MessageProperties Properties { get; }
MessageState ___state;
public MessageState State {
get { return ___state; }
private set { ___state = value; }
}
public abstract MessageVersion Version { get; }
protected bool IsDisposed {
get { return disposed; }
}
public void Close ()
{
if (!disposed)
OnClose ();
State = MessageState.Closed;
disposed = true;
}
public MessageBuffer CreateBufferedCopy (int maxBufferSize)
{
if (State != MessageState.Created)
throw new InvalidOperationException (String.Format ("The message is already at {0} state", State));
try {
return OnCreateBufferedCopy (maxBufferSize);
} finally {
State = MessageState.Copied;
}
}
void IDisposable.Dispose ()
{
Close ();
}
public T GetBody<T> ()
{
return GetBody<T> (new DataContractSerializer (typeof (T)));
}
public T GetBody<T> (XmlObjectSerializer xmlFormatter)
{
return (T) xmlFormatter.ReadObject (GetReaderAtBodyContents ());
}
public string GetBodyAttribute (string localName, string ns)
{
return OnGetBodyAttribute (localName, ns);
}
public XmlDictionaryReader GetReaderAtBodyContents ()
{
return OnGetReaderAtBodyContents ();
}
public override string ToString ()
{
MessageState tempState = State;
try {
StringWriter sw = new StringWriter ();
XmlWriterSettings settings = new XmlWriterSettings ();
settings.Indent = true;
settings.OmitXmlDeclaration = true;
using (XmlWriter w = XmlWriter.Create (sw, settings)) {
WriteMessage (w);
}
return sw.ToString ();
}
finally {
State = tempState;
}
}
void WriteXsiNil (XmlDictionaryWriter writer)
{
writer.WriteStartElement ("z", "anyType", Constants.MSSerialization);
writer.WriteAttributeString ("i", "nil", "http://www.w3.org/2001/XMLSchema-instance", "true");
writer.WriteEndElement ();
}
public void WriteBody (XmlDictionaryWriter writer)
{
if (Version.Envelope != EnvelopeVersion.None)
WriteStartBody (writer);
WriteBodyContents (writer);
if (Version.Envelope != EnvelopeVersion.None)
writer.WriteEndElement ();
}
public void WriteBody (XmlWriter writer)
{
WriteBody (XmlDictionaryWriter.CreateDictionaryWriter (writer));
}
public void WriteBodyContents (XmlDictionaryWriter writer)
{
if (!IsEmpty)
OnWriteBodyContents (writer);
else if (Version.Envelope == EnvelopeVersion.None)
WriteXsiNil (writer);
State = MessageState.Written;
}
public void WriteMessage (XmlDictionaryWriter writer)
{
if (State != MessageState.Created)
throw new InvalidOperationException (String.Format ("The message is already at {0} state", State));
OnWriteMessage (writer);
}
public void WriteMessage (XmlWriter writer)
{
WriteMessage (XmlDictionaryWriter.CreateDictionaryWriter (writer));
}
public void WriteStartBody (XmlDictionaryWriter writer)
{
if (State != MessageState.Created)
throw new InvalidOperationException (String.Format ("The message is already at {0} state", State));
OnWriteStartBody (writer);
}
public void WriteStartBody (XmlWriter writer)
{
WriteStartBody (
XmlDictionaryWriter.CreateDictionaryWriter (writer));
}
public void WriteStartEnvelope (XmlDictionaryWriter writer)
{
if (State != MessageState.Created)
throw new InvalidOperationException (String.Format ("The message is already at {0} state", State));
OnWriteStartEnvelope (writer);
}
[MonoTODO]
protected virtual void OnBodyToString (
XmlDictionaryWriter writer)
{
throw new NotImplementedException ();
}
protected virtual void OnClose ()
{
}
protected virtual MessageBuffer OnCreateBufferedCopy (
int maxBufferSize)
{
var s = new XmlWriterSettings ();
s.OmitXmlDeclaration = true;
s.ConformanceLevel = ConformanceLevel.Auto;
StringWriter sw = new StringWriter ();
using (XmlDictionaryWriter w = XmlDictionaryWriter.CreateDictionaryWriter (XmlWriter.Create (sw, s)))
WriteBodyContents (w);
var headers = new MessageHeaders (Headers);
var props = new MessageProperties (Properties);
return new DefaultMessageBuffer (maxBufferSize, headers, props, new XmlReaderBodyWriter (sw.ToString ()), false);
}
protected virtual string OnGetBodyAttribute (
string localName, string ns)
{
// other than XmlReaderMessage it cannot return anything
return null;
}
protected virtual XmlDictionaryReader OnGetReaderAtBodyContents ()
{
var ws = new XmlWriterSettings ();
ws.ConformanceLevel = ConformanceLevel.Auto;
StringWriter sw = new StringWriter ();
using (XmlDictionaryWriter body = XmlDictionaryWriter.CreateDictionaryWriter (XmlWriter.Create (sw, ws))) {
WriteBodyContents (body);
}
var rs = new XmlReaderSettings ();
rs.ConformanceLevel = ConformanceLevel.Auto;
return XmlDictionaryReader.CreateDictionaryReader (XmlReader.Create (new StringReader (sw.ToString ()), rs));
}
protected abstract void OnWriteBodyContents (
XmlDictionaryWriter writer);
protected virtual void OnWriteMessage (
XmlDictionaryWriter writer)
{
if (Version.Envelope != EnvelopeVersion.None) {
WriteStartEnvelope (writer);
if (Headers.Count > 0) {
OnWriteStartHeaders (writer);
for (int i = 0, count = Headers.Count; i < count; i++)
Headers.WriteHeader (i, writer);
writer.WriteEndElement ();
}
}
WriteBody (writer);
if (Version.Envelope != EnvelopeVersion.None)
writer.WriteEndElement ();
}
protected virtual void OnWriteStartBody (
XmlDictionaryWriter writer)
{
writer.WriteStartElement ("s", "Body", Version.Envelope.Namespace);
if (BodyId != null)
writer.WriteAttributeString ("u", "Id", Constants.WsuNamespace, BodyId);
}
protected virtual void OnWriteStartEnvelope (
XmlDictionaryWriter writer)
{
writer.WriteStartElement ("s", "Envelope", Version.Envelope.Namespace);
if (Headers.Action != null && Version.Addressing.Namespace != MessageVersion.None.Addressing.Namespace)
writer.WriteXmlnsAttribute ("a", Version.Addressing.Namespace);
foreach (MessageHeaderInfo h in Headers)
if (h.Id != null) {
writer.WriteXmlnsAttribute ("u", Constants.WsuNamespace);
break;
}
}
protected virtual void OnWriteStartHeaders (
XmlDictionaryWriter writer)
{
writer.WriteStartElement ("s", "Header", Version.Envelope.Namespace);
}
#region factory methods
// 1) fault -> 4
// 2) action -> 5
// 3) fault, action -> 10
// 4) version, fault -> 10
// 5) version, action -> EmptyMessage
// 6) action, body -> 12
// 7) action, xmlReader -> 8
// 8) action, reader -> 16
// 10) version, fault, action -> 20
// 11) version, action, body -> 14
// 12) action, body, formatter -> 14
// 13) version, action, body -> 14
// 14) version, action, body, formatter -> 20
// 15) version, action, xmlReader -> 16
// 16) version, action, reader -> 20
// 17) xmlReader, maxSizeOfHeaders, version -> 18
// 18) reader, maxSizeOfHeaders, version -> ForwardingMessage
// 19) action, bodyWriter -> 20
// 20) version, action, bodyWriter -> SimpleMessage
public static Message CreateMessage (MessageVersion version,
FaultCode code, string reason, string action)
{
MessageFault fault = MessageFault.CreateFault (code, reason);
return CreateMessage (version, fault, action);
}
public static Message CreateMessage (MessageVersion version,
FaultCode code, string reason, object detail,
string action)
{
MessageFault fault = MessageFault.CreateFault (
code, new FaultReason (reason), detail);
return CreateMessage (version, fault, action);
}
public static Message CreateMessage (MessageVersion version,
MessageFault fault, string action)
{
return new SimpleMessage (version, action,
new MessageFaultBodyWriter (fault, version), true);
}
public static Message CreateMessage (MessageVersion version,
string action, object body)
{
return body == null ?
CreateMessage (version, action) :
CreateMessage (version, action, body, new DataContractSerializer (body.GetType ()));
}
public static Message CreateMessage (MessageVersion version,
string action, object body, XmlObjectSerializer xmlFormatter)
{
return body == null ?
CreateMessage (version, action) :
CreateMessage (
version, action,
new XmlObjectSerializerBodyWriter (body, xmlFormatter));
}
public static Message CreateMessage (MessageVersion version,
string action, XmlReader body)
{
return CreateMessage (version, action,
XmlDictionaryReader.CreateDictionaryReader (body));
}
public static Message CreateMessage (MessageVersion version,
string action, XmlDictionaryReader body)
{
return CreateMessage (version, action,
new XmlReaderBodyWriter (body));
}
public static Message CreateMessage (XmlReader envelopeReader,
int maxSizeOfHeaders, MessageVersion version)
{
return CreateMessage (
XmlDictionaryReader.CreateDictionaryReader (envelopeReader),
maxSizeOfHeaders,
version);
}
// Core implementations of CreateMessage.
public static Message CreateMessage (MessageVersion version,
string action, BodyWriter body)
{
if (version == null)
throw new ArgumentNullException ("version");
if (body == null)
throw new ArgumentNullException ("body");
return new SimpleMessage (version, action, body, false);
}
public static Message CreateMessage (MessageVersion version,
string action)
{
if (version == null)
throw new ArgumentNullException ("version");
return new EmptyMessage (version, action);
}
public static Message CreateMessage (
XmlDictionaryReader envelopeReader,
int maxSizeOfHeaders,
MessageVersion version)
{
if (envelopeReader == null)
throw new ArgumentNullException ("envelopeReader");
if (version == null)
throw new ArgumentNullException ("version");
return new XmlReaderMessage (version,
envelopeReader, maxSizeOfHeaders);
}
#endregion
}
}
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