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//----------------------------------------------------------------------------
// Copyright (c) Microsoft Corporation. All rights reserved.
//----------------------------------------------------------------------------
namespace System.ServiceModel.Channels
{
using System.Runtime;
using System.ServiceModel;
using System.ServiceModel.Security;
using System.Xml;
sealed class CreateSequence : BodyWriter
{
AddressingVersion addressingVersion;
IClientReliableChannelBinder binder;
UniqueId offerIdentifier;
bool ordered;
ReliableMessagingVersion reliableMessagingVersion;
CreateSequence()
: base(true)
{
}
public CreateSequence(AddressingVersion addressingVersion, ReliableMessagingVersion reliableMessagingVersion,
bool ordered, IClientReliableChannelBinder binder, UniqueId offerIdentifier)
: base(true)
{
this.addressingVersion = addressingVersion;
this.reliableMessagingVersion = reliableMessagingVersion;
this.ordered = ordered;
this.binder = binder;
this.offerIdentifier = offerIdentifier;
}
public static CreateSequenceInfo Create(MessageVersion messageVersion,
ReliableMessagingVersion reliableMessagingVersion, ISecureConversationSession securitySession,
XmlDictionaryReader reader)
{
if (reader == null)
{
Fx.Assert("Argument reader cannot be null.");
}
try
{
CreateSequenceInfo info = new CreateSequenceInfo();
WsrmFeb2005Dictionary wsrmFeb2005Dictionary = XD.WsrmFeb2005Dictionary;
XmlDictionaryString wsrmNs = WsrmIndex.GetNamespace(reliableMessagingVersion);
reader.ReadStartElement(wsrmFeb2005Dictionary.CreateSequence, wsrmNs);
info.AcksTo = EndpointAddress.ReadFrom(messageVersion.Addressing, reader, wsrmFeb2005Dictionary.AcksTo, wsrmNs);
if (reader.IsStartElement(wsrmFeb2005Dictionary.Expires, wsrmNs))
{
info.Expires = reader.ReadElementContentAsTimeSpan();
}
if (reader.IsStartElement(wsrmFeb2005Dictionary.Offer, wsrmNs))
{
reader.ReadStartElement();
reader.ReadStartElement(wsrmFeb2005Dictionary.Identifier, wsrmNs);
info.OfferIdentifier = reader.ReadContentAsUniqueId();
reader.ReadEndElement();
bool wsrm11 = reliableMessagingVersion == ReliableMessagingVersion.WSReliableMessaging11;
Wsrm11Dictionary wsrm11Dictionary = wsrm11 ? DXD.Wsrm11Dictionary : null;
if (wsrm11)
{
EndpointAddress endpoint = EndpointAddress.ReadFrom(messageVersion.Addressing, reader,
wsrm11Dictionary.Endpoint, wsrmNs);
if (endpoint.Uri != info.AcksTo.Uri)
{
string reason = SR.GetString(SR.CSRefusedAcksToMustEqualEndpoint);
Message faultReply = WsrmUtilities.CreateCSRefusedProtocolFault(messageVersion, reliableMessagingVersion, reason);
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(WsrmMessageInfo.CreateInternalFaultException(faultReply, reason, new ProtocolException(reason)));
}
}
if (reader.IsStartElement(wsrmFeb2005Dictionary.Expires, wsrmNs))
{
info.OfferExpires = reader.ReadElementContentAsTimeSpan();
}
if (wsrm11)
{
if (reader.IsStartElement(wsrm11Dictionary.IncompleteSequenceBehavior, wsrmNs))
{
string incompleteSequenceBehavior = reader.ReadElementContentAsString();
if ((incompleteSequenceBehavior != Wsrm11Strings.DiscardEntireSequence)
&& (incompleteSequenceBehavior != Wsrm11Strings.DiscardFollowingFirstGap)
&& (incompleteSequenceBehavior != Wsrm11Strings.NoDiscard))
{
string reason = SR.GetString(SR.CSRefusedInvalidIncompleteSequenceBehavior);
Message faultReply = WsrmUtilities.CreateCSRefusedProtocolFault(messageVersion, reliableMessagingVersion, reason);
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(
WsrmMessageInfo.CreateInternalFaultException(faultReply, reason,
new ProtocolException(reason)));
}
// Otherwise ignore the value.
}
}
while (reader.IsStartElement())
{
reader.Skip();
}
reader.ReadEndElement();
}
// Check for security only if we expect a soap security session.
if (securitySession != null)
{
bool hasValidToken = false;
// Since the security element is amongst the extensible elements (i.e. there is no
// gaurantee of ordering or placement), a loop is required to attempt to parse the
// security element.
while (reader.IsStartElement())
{
if (securitySession.TryReadSessionTokenIdentifier(reader))
{
hasValidToken = true;
break;
}
reader.Skip();
}
if (!hasValidToken)
{
string reason = SR.GetString(SR.CSRefusedRequiredSecurityElementMissing);
Message faultReply = WsrmUtilities.CreateCSRefusedProtocolFault(messageVersion, reliableMessagingVersion, reason);
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(WsrmMessageInfo.CreateInternalFaultException(faultReply, reason, new ProtocolException(reason)));
}
}
while (reader.IsStartElement())
{
reader.Skip();
}
reader.ReadEndElement();
if (reader.IsStartElement())
{
string reason = SR.GetString(SR.CSRefusedUnexpectedElementAtEndOfCSMessage);
Message faultReply = WsrmUtilities.CreateCSRefusedProtocolFault(messageVersion, reliableMessagingVersion, reason);
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(WsrmMessageInfo.CreateInternalFaultException(faultReply, reason, new ProtocolException(reason)));
}
return info;
}
catch (XmlException e)
{
string reason = SR.GetString(SR.CouldNotParseWithAction, WsrmIndex.GetCreateSequenceActionString(reliableMessagingVersion));
Message faultReply = WsrmUtilities.CreateCSRefusedProtocolFault(messageVersion, reliableMessagingVersion, reason);
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(WsrmMessageInfo.CreateInternalFaultException(faultReply, reason, new ProtocolException(reason, e)));
}
}
protected override void OnWriteBodyContents(XmlDictionaryWriter writer)
{
WsrmFeb2005Dictionary wsrmFeb2005Dictionary = XD.WsrmFeb2005Dictionary;
XmlDictionaryString wsrmNs = WsrmIndex.GetNamespace(this.reliableMessagingVersion);
writer.WriteStartElement(wsrmFeb2005Dictionary.CreateSequence, wsrmNs);
EndpointAddress localAddress = this.binder.LocalAddress;
localAddress.WriteTo(this.addressingVersion, writer, wsrmFeb2005Dictionary.AcksTo, wsrmNs);
if (this.offerIdentifier != null)
{
writer.WriteStartElement(wsrmFeb2005Dictionary.Offer, wsrmNs);
writer.WriteStartElement(wsrmFeb2005Dictionary.Identifier, wsrmNs);
writer.WriteValue(this.offerIdentifier);
writer.WriteEndElement();
if (this.reliableMessagingVersion == ReliableMessagingVersion.WSReliableMessaging11)
{
Wsrm11Dictionary wsrm11Dictionary = DXD.Wsrm11Dictionary;
localAddress.WriteTo(this.addressingVersion, writer, wsrm11Dictionary.Endpoint, wsrmNs);
writer.WriteStartElement(wsrm11Dictionary.IncompleteSequenceBehavior, wsrmNs);
writer.WriteValue(
this.ordered ? wsrm11Dictionary.DiscardFollowingFirstGap : wsrm11Dictionary.NoDiscard);
writer.WriteEndElement();
}
writer.WriteEndElement();
}
ISecureConversationSession securitySession = this.binder.GetInnerSession() as ISecureConversationSession;
if (securitySession != null)
securitySession.WriteSessionTokenIdentifier(writer);
writer.WriteEndElement();
}
}
}
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