private void CheckSOAPHeaders(SoapMessage message)
{
// We want to check the following:
//
// - no SOAP Actor attribute exists
// - no SOAP headers can have a must_understand attribute set to true
//
// Go through each header in our message
//
foreach (SoapHeader header in message.Headers)
{
if (header.MustUnderstand)
{
//
// No headers can have this attribute set.
//
DispositionReport.ThrowFinal(new UDDIException(ErrorType.E_fatalError, "UDDI_ERROR_FATALERROR_SOAP_MUSTUNDERSTANDATT"));
return;
}
if (header.Actor.Length > 0)
{
//
// Can't have a SOAP Actor attribute set, generate a SOAP fault with
// no detail element and a 'Client' fault code
//
DispositionReport.ThrowFinal(new UDDIException(ErrorType.E_fatalError, "UDDI_ERROR_FATALERROR_SOAP_ACTORATT"));
return;
}
}
}
//
// TODO: see if there is a way to better modularize this method and rename it.
//
private void CheckForSingleRequest(Stream stream)
{
try
{
//
// Move to the start of our stream
//
stream.Position = 0;
XmlTextReader requestReader = new XmlTextReader(oldStream);
requestReader.MoveToContent();
//
// TODO: should not hard-code SOAP names and namespaces
//
//
// Move to the beginning of the SOAP envelope
//
requestReader.ReadStartElement("Envelope", "http://schemas.xmlsoap.org/soap/envelope/");
//
// Move to the SOAP body
//
while (!requestReader.IsStartElement("Body", "http://schemas.xmlsoap.org/soap/envelope/") && !requestReader.EOF)
{
requestReader.Skip();
}
//
// Advance the current node to the first child of Body. This is presumably the UDDI message
//
requestReader.ReadStartElement("Body", "http://schemas.xmlsoap.org/soap/envelope/");
requestReader.MoveToContent();
//
// This element MUST have a UDDI namespace
//
string uddiNamespace = requestReader.LookupNamespace(requestReader.Prefix);
switch (uddiNamespace)
{
case "urn:uddi-org:api":
{
Context.ApiVersionMajor = 1;
break;
}
case "urn:uddi-org:api_v2":
{
Context.ApiVersionMajor = 2;
break;
}
case "urn:uddi-microsoft-com:api_v2_extensions":
{
Context.ApiVersionMajor = 2;
break;
}
case "urn:uddi-org:repl":
{
Context.ApiVersionMajor = 2;
break;
}
default:
{
//
// This is a problem, we don't have a UDDI namespace. Throw an exception and get out of here. The
// exception will be caught in our outer catch and sent to our client using DispositionReport.ThrowFinal.
//
throw new UDDIException(ErrorType.E_fatalError, "UDDI_ERROR_FATALERROR_MISSINGUDDINS");
}
}
//
// Skip the children of this node
//
requestReader.Skip();
requestReader.MoveToContent();
//
// Reset our stream so someone else can use it.
//
stream.Position = 0;
//
// If we are not at the end of the Body tag, then we have multiple requests, we should reject the message.
//
if (false == requestReader.LocalName.Equals("Body"))
{
DispositionReport.ThrowFinal(new UDDIException(ErrorType.E_fatalError, "UDDI_ERROR_FATALERROR_SOAP_MULTIPLEREQUEST"));
}
}
catch (UDDIException uddiException)
{
DispositionReport.ThrowFinal(uddiException);
}
catch
{
//
// We'll get this exception if the message contains any invalid elements
//
DispositionReport.ThrowFinal(new UDDIException(ErrorType.E_fatalError, "UDDI_ERROR_FATALERROR_SOAP_INVALIDELEMENT"));
}
}
public override void ProcessMessage(SoapMessage message)
{
try
{
switch (message.Stage)
{
case SoapMessageStage.BeforeDeserialize:
//
// Check to see if the server has been manually stopped.
//
if (0 == Config.GetInt("Run", 1))
{
DispositionReport.ThrowFinal(new UDDIException(ErrorType.E_busy, "UDDI_ERROR_BUSY_SERVICENOTAVAILABLE"));
//
// DispositionReport.ThrowFinal will close the HTTP stream so there is no point going on in this method
//
return;
}
try
{
//
// Validate against the UDDI schemas
//
SchemaCollection.Validate(oldStream);
}
catch (Exception e)
{
DispositionReport.ThrowFinal(new UDDIException(ErrorType.E_fatalError, "UDDI_ERROR_FATALERROR_SCHEMAVALIDATIONFAILED", e.Message));
//
// DispositionReport.ThrowFinal will close the HTTP stream so there is no point going on in this method
//
return;
}
//
// Make sure we only have 1 UDDI request in the SOAP body. This method will also set the versionMajor
// member.
//
CheckForSingleRequest(oldStream);
//
// If this is a v1 message, we'll first map it to the v2
// namespace so that it can be processed by the new
// library.
//
if (1 == Context.ApiVersionMajor || 2 == Context.ApiVersionMajor)
{
TextReader reader = new StreamReader(oldStream);
TextWriter writer = new StreamWriter(newStream, new System.Text.UTF8Encoding(false));
string xml = reader.ReadToEnd();
if (1 == Context.ApiVersionMajor)
{
xml = xml.Replace("=\"urn:uddi-org:api\"", "=\"urn:uddi-org:api_v2\"");
xml = xml.Replace("='urn:uddi-org:api'", "=\"urn:uddi-org:api_v2\"");
}
writer.Write(xml);
writer.Flush();
newStream.Position = 0;
}
break;
case SoapMessageStage.AfterDeserialize:
//
// After the message is deserialized is the earliest place where we
// have access to our SOAP headers.
//
CheckSOAPHeaders(message);
//
// Now that the message has been deserialized, make
// sure that the generic and xmlns attributes agree.
//
IMessage obj = message.GetInParameterValue(0) as IMessage;
if (null != obj)
{
//
// We only need to do this if the deserialized object supports IMessage
//
string expected = Context.ApiVersionMajor + ".0";
string actual = obj.Generic.Trim();
if (expected != actual)
{
throw new UDDIException(ErrorType.E_unrecognizedVersion, "UDDI_ERROR_UNKNOWNVERSION_GENERICNAMESPACEMISMATCH");
}
}
break;
case SoapMessageStage.BeforeSerialize:
break;
case SoapMessageStage.AfterSerialize:
//
// There may have been exceptions thrown during serialization.
//
if (null != message.Exception &&
(null == message.Exception.Detail ||
0 == message.Exception.Detail.ChildNodes.Count))
{
DispositionReport.ThrowFinal(new UDDIException(ErrorType.E_fatalError, "UDDI_ERROR_FATALERROR_FAILEDDESERIALIZATION"));
//
// DispositionReport.ThrowFinal will close the HTTP stream so there is no point going on in this method
//
return;
}
//
// If the original request was v1, then we'll need to
// remap the output to use the v1 namespace.
//
if (1 == Context.ApiVersionMajor || 2 == Context.ApiVersionMajor)
{
newStream.Position = 0;
TextReader reader = new StreamReader(newStream);
TextWriter writer = new StreamWriter(oldStream, new System.Text.UTF8Encoding(false));
string xml = reader.ReadToEnd();
//
// We don't have to use the same 'loose' replacement as we did on the incoming request
// because our response will be serialized such that the default namespace is our UDDI
// namespace.
//
if (1 == Context.ApiVersionMajor)
{
xml = xml.Replace("xmlns=\"urn:uddi-org:api_v2\"", "xmlns=\"urn:uddi-org:api\"");
xml = xml.Replace("generic=\"2.0\"", "generic=\"1.0\"");
}
writer.Write(xml);
writer.Flush();
}
break;
default:
throw new UDDIException(ErrorType.E_fatalError, "UDDI_ERROR_FATALERROR_UNKNOWNEXTSTAGE");
}
}
catch (Exception e)
{
DispositionReport.Throw(e);
}
}
