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//
// System.ServiceModel.MessageHeader.cs
//
// Author: Duncan Mak (duncan@novell.com)
//
// Copyright (C) 2005 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.Collections;
using System.Collections.Generic;
using System.IO;
using System.Runtime.Serialization;
using System.ServiceModel;
using System.Xml;
namespace System.ServiceModel.Channels
{
public sealed class MessageHeaders : IEnumerable<MessageHeaderInfo>, IEnumerable
{
static string [] empty_strings = new string [0];
static readonly XmlReaderSettings reader_settings;
static MessageHeaders ()
{
reader_settings = new XmlReaderSettings ();
reader_settings.ConformanceLevel = ConformanceLevel.Fragment;
}
List<MessageHeaderInfo> l;
Dictionary<Type, XmlObjectSerializer> serializers =
new Dictionary<Type, XmlObjectSerializer> ();
MessageVersion version;
public MessageHeaders (MessageHeaders headers)
: this (headers.MessageVersion)
{
CopyHeadersFrom (headers);
}
public MessageHeaders (MessageVersion version)
: this (version, 10) // let's say 10 is the initial size
{
}
public MessageHeaders (MessageVersion version, int capacity)
{
this.version = version;
l = new List<MessageHeaderInfo> (capacity);
}
public void Add (MessageHeader header)
{
l.Add (header);
}
public void CopyHeaderFrom (Message m, int index)
{
CopyHeaderFrom (m.Headers, index);
}
public void Clear ()
{
l.Clear ();
}
public void CopyHeaderFrom (MessageHeaders headers, int index)
{
l.Add (headers [index]);
}
public void CopyHeadersFrom (Message m)
{
CopyHeadersFrom (m.Headers);
}
public void CopyHeadersFrom (MessageHeaders headers)
{
foreach (MessageHeaderInfo h in headers)
l.Add (h);
}
public void CopyTo (MessageHeaderInfo [] dst, int index)
{
l.CopyTo (dst, index);
}
public int FindHeader (string name, string ns)
{
return FindHeader (name, ns, null);
}
bool HasActor (string actor, string [] candidates)
{
foreach (string c in candidates)
if (c == actor)
return true;
return false;
}
public int FindHeader (string name, string ns, params string [] actors)
{
int found = 0;
int retval = -1;
for (int i = 0; i < l.Count; i++) {
MessageHeaderInfo info = l [i];
if (info.Name == name && info.Namespace == ns) {
if (found > 1)
throw new ArgumentException ("Found multiple matching headers.");
// When no actors are passed, it never
// matches such header that has an
// Actor.
if (actors == null && info.Actor == String.Empty ||
actors != null && HasActor (info.Actor, actors)) {
retval = i;
found++;
}
}
}
return retval;
}
public IEnumerator<MessageHeaderInfo> GetEnumerator ()
{
return l.GetEnumerator ();
}
XmlObjectSerializer GetSerializer<T> (int headerIndex)
{
if (!serializers.ContainsKey (typeof (T)))
serializers [typeof (T)] = new DataContractSerializer (typeof (T), this [headerIndex].Name, this [headerIndex].Namespace);
return serializers [typeof (T)];
}
public T GetHeader<T> (int index)
{
if (l.Count <= index)
throw new ArgumentOutOfRangeException ("index");
var dmh = l [index] as MessageHeader.DefaultMessageHeader;
if (dmh != null && dmh.Value != null && typeof (T).IsAssignableFrom (dmh.Value.GetType ()))
return (T) dmh.Value;
if (typeof (T) == typeof (EndpointAddress)) {
XmlDictionaryReader r = GetReaderAtHeader (index);
return r.NodeType != XmlNodeType.Element ? default (T) : (T) (object) EndpointAddress.ReadFrom (r);
}
else
return GetHeader<T> (index, GetSerializer<T> (index));
}
public T GetHeader<T> (int index, XmlObjectSerializer serializer)
{
if (serializer == null)
throw new ArgumentNullException ("serializer");
XmlDictionaryReader r = GetReaderAtHeader (index);
return (T) serializer.ReadObject (r, false);
}
public T GetHeader<T> (string name, string ns)
{
return GetHeader<T> (name, ns, empty_strings);
}
public T GetHeader<T> (string name, string ns, params string [] actors)
{
int idx = FindHeader (name, ns, actors);
if (idx == -1)
throw new MessageHeaderException (String.Format ("Header '{0}:{1}' was not found for the argument actors: {2}", ns, name, String.Join (",", actors)));
return GetHeader<T> (idx);
}
public T GetHeader<T> (string name, string ns, XmlObjectSerializer serializer)
{
if (serializer == null)
throw new ArgumentNullException ("serializer");
int idx = FindHeader (name, ns);
if (idx < 0)
throw new MessageHeaderException (String.Format ("Header '{0}:{1}' was not found", ns, name));
return GetHeader<T> (idx, serializer);
}
public XmlDictionaryReader GetReaderAtHeader (int index)
{
if (index >= l.Count)
throw new ArgumentOutOfRangeException (String.Format ("Index is out of range. Current header count is {0}", index));
MessageHeader item = (MessageHeader) l [index];
XmlReader reader =
item is MessageHeader.RawMessageHeader ?
((MessageHeader.RawMessageHeader) item).CreateReader () :
XmlReader.Create (
new StringReader (item.ToString ()),
reader_settings);
reader.MoveToContent ();
XmlDictionaryReader dr = XmlDictionaryReader.CreateDictionaryReader (reader);
dr.MoveToContent ();
return dr;
}
public bool HaveMandatoryHeadersBeenUnderstood ()
{
throw new NotImplementedException ();
}
public bool HaveMandatoryHeadersBeenUnderstood (params string [] actors)
{
throw new NotImplementedException ();
}
public void Insert (int index, MessageHeader header)
{
l.Insert (index, header);
}
public void RemoveAll (string name, string ns)
{
// Shuffle all the ones we want to keep to the start of the list
int j = 0;
for (int i = 0; i < l.Count; i++) {
if (l[i].Name != name || l[i].Namespace != ns) {
l [j++] = l[i];
}
}
// Trim the extra elements off the end of the list.
int count = l.Count - j;
for (int i = 0; i < count; i++)
l.RemoveAt (l.Count - 1);
}
public void RemoveAt (int index)
{
l.RemoveAt (index);
}
IEnumerator IEnumerable.GetEnumerator ()
{
return ((IEnumerable) l).GetEnumerator ();
}
public void WriteHeader (int index, XmlDictionaryWriter writer)
{
if (version.Envelope == EnvelopeVersion.None)
return;
// For AddressingVersion.None, don't output the item.
//
// FIXME: It should even ignore Action, but for now
// service dispatcher won't work without it.
if (version.Addressing == AddressingVersion.None &&
l [index].Name != "Action")
return;
WriteStartHeader (index, writer);
WriteHeaderContents (index, writer);
writer.WriteEndElement ();
}
public void WriteHeader (int index, XmlWriter writer)
{
WriteHeader (index, XmlDictionaryWriter.CreateDictionaryWriter (writer));
}
public void WriteHeaderContents (int index, XmlDictionaryWriter writer)
{
if (index > l.Count)
throw new ArgumentOutOfRangeException ("There is no header at position " + index + ".");
MessageHeader h = l [index] as MessageHeader;
h.WriteHeaderContents (writer, version);
}
public void WriteHeaderContents (int index, XmlWriter writer)
{
WriteHeaderContents (index, XmlDictionaryWriter.CreateDictionaryWriter (writer));
}
public void WriteStartHeader (int index, XmlDictionaryWriter writer)
{
if (index > l.Count)
throw new ArgumentOutOfRangeException ("There is no header at position " + index + ".");
MessageHeader h = l [index] as MessageHeader;
h.WriteStartHeader (writer, version);
}
public void WriteStartHeader (int index, XmlWriter writer)
{
WriteStartHeader (index, XmlDictionaryWriter.CreateDictionaryWriter (writer));
}
public string Action {
get {
int idx = FindHeader ("Action", version.Addressing.Namespace);
return idx < 0 ? null : GetHeader<string> (idx);
}
set {
RemoveAll ("Action", version.Addressing.Namespace);
if (value != null)
Add (MessageHeader.CreateHeader ("Action", version.Addressing.Namespace, value, true));
}
}
public int Count {
get { return l.Count; }
}
#if !NET_2_1
public EndpointAddress FaultTo {
get {
int idx = FindHeader ("FaultTo", Constants.WSA1);
return idx < 0 ? null : GetHeader<EndpointAddress> (idx);
}
set {
if (version.Addressing == AddressingVersion.None)
throw new InvalidOperationException ("WS-Addressing header is not allowed for AddressingVersion.None");
RemoveAll ("FaultTo", Constants.WSA1);
if (value != null)
Add (MessageHeader.CreateHeader ("FaultTo", Constants.WSA1, EndpointAddress10.FromEndpointAddress (value)));
}
}
public EndpointAddress From {
get {
int idx = FindHeader ("From", version.Addressing.Namespace);
return idx < 0 ? null : GetHeader<EndpointAddress> (idx);
}
set {
if (version.Addressing == AddressingVersion.None)
throw new InvalidOperationException ("WS-Addressing header is not allowed for AddressingVersion.None");
RemoveAll ("From", Constants.WSA1);
if (value != null)
Add (MessageHeader.CreateHeader ("From", Constants.WSA1, EndpointAddress10.FromEndpointAddress (value)));
}
}
#endif
public MessageHeaderInfo this [int index] {
get { return l [index]; }
}
public UniqueId MessageId {
get {
int idx = FindHeader ("MessageID", Constants.WSA1);
return idx < 0 ? null : new UniqueId (GetHeader<string> (idx));
}
set {
if (version.Addressing == AddressingVersion.None)
throw new InvalidOperationException ("WS-Addressing header is not allowed for AddressingVersion.None");
RemoveAll ("MessageID", Constants.WSA1);
if (value != null)
Add (MessageHeader.CreateHeader ("MessageID", Constants.WSA1, value.ToString ()));
}
}
public MessageVersion MessageVersion { get { return version; } }
public UniqueId RelatesTo {
get {
int idx = FindHeader ("RelatesTo", Constants.WSA1);
return idx < 0 ? null : new UniqueId (GetHeader<string> (idx));
}
set {
if (version.Addressing == AddressingVersion.None)
throw new InvalidOperationException ("WS-Addressing header is not allowed for AddressingVersion.None");
RemoveAll ("MessageID", Constants.WSA1);
if (value != null)
Add (MessageHeader.CreateHeader ("RelatesTo", Constants.WSA1, value.ToString ()));
}
}
#if !NET_2_1
public EndpointAddress ReplyTo {
get {
int idx = FindHeader ("ReplyTo", Constants.WSA1);
return idx < 0 ? null : GetHeader<EndpointAddress> (idx);
}
set {
if (version.Addressing == AddressingVersion.None)
throw new InvalidOperationException ("WS-Addressing header is not allowed for AddressingVersion.None");
RemoveAll ("ReplyTo", Constants.WSA1);
if (value != null)
Add (MessageHeader.CreateHeader ("ReplyTo", Constants.WSA1, EndpointAddress10.FromEndpointAddress (value)));
}
}
#endif
public Uri To {
get {
int idx = FindHeader ("To", version.Addressing.Namespace);
//FIXME: return idx < 0 ? null : GetHeader<Uri> (idx);
return idx < 0 ? null : new Uri (GetHeader<string> (idx));
}
set {
RemoveAll ("To", version.Addressing.Namespace);
if (value != null)
Add (MessageHeader.CreateHeader ("To", version.Addressing.Namespace, value.AbsoluteUri, true));
}
}
[MonoTODO]
public UnderstoodHeaders UnderstoodHeaders {
get { throw new NotImplementedException (); }
}
}
}
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