/// <summary>
/// Returns a list of "restricted" header names that will be overridden when calling #createEffectiveHeader
/// The restricted header names are SenderId, RecipientId, DocumentTypeIdentifier and ProfileTypeIdentifier
/// Compares values that exist both as parsed and supplied headers.
/// Ignores values that only exists in one of them (that allows for sending new and unknown document types)
/// </summary>
protected List <String> FindRestricedHeadersThatWillBeOverridden(
PeppolStandardBusinessHeader parsed,
PeppolStandardBusinessHeader supplied)
{
List <String> headers = new List <String>();
if ((parsed.SenderId != null) && (supplied.SenderId != null) &&
(!supplied.SenderId.Equals(parsed.SenderId)))
{
headers.Add("SenderId");
}
if ((parsed.RecipientId != null) && (supplied.RecipientId != null) &&
(!supplied.RecipientId.Equals(parsed.RecipientId)))
{
headers.Add("RecipientId");
}
if ((parsed.DocumentTypeIdentifier != null) && (supplied.DocumentTypeIdentifier != null) &&
(!supplied.DocumentTypeIdentifier.Equals(
parsed.DocumentTypeIdentifier)))
{
headers.Add("DocumentTypeIdentifier");
}
if ((parsed.ProfileTypeIdentifier != null) && (supplied.ProfileTypeIdentifier != null) &&
(!supplied.ProfileTypeIdentifier
.Equals(parsed.ProfileTypeIdentifier)))
{
headers.Add("ProfileTypeIdentifier");
}
return(headers);
}
private byte[] WrapPayLoadWithSbdh(
Stream byteArrayInputStream,
PeppolStandardBusinessHeader effectivesbh)
{
SbdhWrapper sbdhWrapper = new SbdhWrapper();
return(sbdhWrapper.Wrap(byteArrayInputStream, effectivesbh.ToVefa()));
}
private PeppolStandardBusinessHeader ParsePayLoadAndDeduceSbdh(
PeppolStandardBusinessHeader optionallyParsedSbdh)
{
if (optionallyParsedSbdh != null)
{
return(optionallyParsedSbdh);
}
return(new PeppolStandardBusinessHeader(this.contentDetector.Parse(this.payload.ToStream())));
}
/// <summary>
/// Builds the actual <see cref="ITransmissionRequest"/>.
///
/// The <see cref="PeppolStandardBusinessHeader"/> is build as following
///
/// <ol>
/// <li>If the payload contains an SBHD, allow override if global "overrideAllowed" flag is set, otherwise use the one parsed</li>
/// <li>If the payload does not contain an SBDH, parse payload to determine some of the SBDH attributes and allow override if global "overrideAllowed" flag is set.</li>
/// </ol>
/// </summary>
/// <returns>Prepared transmission request</returns>
public ITransmissionRequest Build()
{
if (this.payload.Length < 2)
{
throw new HyperwayTransmissionException("You have forgotten to provide payload");
}
PeppolStandardBusinessHeader optionalParsedSbdh = null;
try
{
optionalParsedSbdh = new PeppolStandardBusinessHeader(SbdhParser.Parse(this.payload.ToStream()));
}
catch (InvalidOperationException)
{
// No action.
}
// Calculates the effectiveStandardBusinessHeader to be used
this.effectiveStandardBusinessHeader = this.MakeEffectiveSbdh(optionalParsedSbdh, this.suppliedHeaderFields);
// If the endpoint has not been overridden by the caller, look up the endpoint address in
// the SMP using the data supplied in the payload
if (this.IsEndpointSuppliedByCaller() && this.IsOverrideAllowed())
{
Log.Warn("Endpoint was set by caller not retrieved from SMP, make sure this is intended behaviour.");
}
else
{
Endpoint endpointLookedup = this.lookupService.Lookup(this.effectiveStandardBusinessHeader.ToVefa(), null);
if (this.IsEndpointSuppliedByCaller() && !this.endpoint.Equals(endpointLookedup))
{
throw new InvalidOperationException("You are not allowed to override the EndpointAddress from SMP.");
}
this.endpoint = endpointLookedup;
}
// make sure payload is encapsulated in SBDH
if (optionalParsedSbdh == null)
{
// Wraps the payload with an SBDH, as this is required for AS2
this.payload = this.WrapPayLoadWithSbdh(this.payload.ToStream(), this.effectiveStandardBusinessHeader);
}
// Transfers all the properties of this object into the newly created TransmissionRequest
return(new DefaultTransmissionRequest(
this.GetEffectiveStandardBusinessHeader().ToVefa(),
this.GetPayload(),
this.GetEndpoint()));
}
/// <summary>
/// Merges the SBDH parsed from the payload with the SBDH data supplied by the caller, i.e. the caller wishes to
/// override the contents of the SBDH parsed. That is, if the payload contains an SBDH
/// </summary>
/// <param name="optionalParsedSbdh">the SBDH as parsed (extracted) from the payload.</param>
/// <param name="peppolSbdhSuppliedByCaller">the SBDH data supplied by the caller in order to override data from the payload</param>
/// <returns>the merged, effective SBDH created by combining the two data sets</returns>
private PeppolStandardBusinessHeader MakeEffectiveSbdh(
PeppolStandardBusinessHeader optionalParsedSbdh,
PeppolStandardBusinessHeader peppolSbdhSuppliedByCaller)
{
PeppolStandardBusinessHeader effectiveSbdh;
if (this.IsOverrideAllowed())
{
if (peppolSbdhSuppliedByCaller.IsComplete())
{
// we have sufficient meta data (set explicitly by the caller using API functions)
effectiveSbdh = peppolSbdhSuppliedByCaller;
}
else
{
// missing meta data, parse payload, which does not contain SBHD, in order to deduce missing fields
PeppolStandardBusinessHeader parsedPeppolStandardBusinessHeader = this.ParsePayLoadAndDeduceSbdh(optionalParsedSbdh);
effectiveSbdh = this.CreateEffectiveHeader(parsedPeppolStandardBusinessHeader, peppolSbdhSuppliedByCaller);
}
}
else
{
// override is not allowed, make sure we do not override any restricted headers
PeppolStandardBusinessHeader parsedPeppolStandardBusinessHeader = this.ParsePayLoadAndDeduceSbdh(optionalParsedSbdh);
List <String> overriddenHeaders = this.FindRestricedHeadersThatWillBeOverridden(
parsedPeppolStandardBusinessHeader,
peppolSbdhSuppliedByCaller);
if (overriddenHeaders.Count == 0)
{
effectiveSbdh = this.CreateEffectiveHeader(
parsedPeppolStandardBusinessHeader,
peppolSbdhSuppliedByCaller);
}
else
{
var txtValues = overriddenHeaders.ToArray().ToStringValues();
throw new InvalidOperationException(
"Your are not allowed to override " + txtValues + " in production mode, makes sure headers match the ones in the document.");
}
}
if (!effectiveSbdh.IsComplete())
{
var txtValues = effectiveSbdh.ListMissingProperties().ToArray().ToStringValues();
throw new InvalidOperationException(
$"TransmissionRequest can not be built, missing {txtValues} metadata.");
}
return(effectiveSbdh);
}
/// <summary>
/// Merges the supplied header fields with the SBDH parsed or derived from the payload thus allowing the caller
/// to explicitly override whatever has been supplied in the payload.
/// </summary>
/// <param name="parsed">the PeppolStandardBusinessHeader parsed from the payload</param>
/// <param name="supplied">the header fields supplied by the caller</param>
/// <returns>the merged and effective headers</returns>
protected PeppolStandardBusinessHeader CreateEffectiveHeader(PeppolStandardBusinessHeader parsed, PeppolStandardBusinessHeader supplied)
{
// Creates a copy of the original business headers
PeppolStandardBusinessHeader mergedHeaders = new PeppolStandardBusinessHeader(parsed);
if (supplied.SenderId != null)
{
mergedHeaders.SenderId = supplied.SenderId;
}
if (supplied.RecipientId != null)
{
mergedHeaders.RecipientId = supplied.RecipientId;
}
if (supplied.DocumentTypeIdentifier != null)
{
mergedHeaders.DocumentTypeIdentifier = supplied.DocumentTypeIdentifier;
}
if (supplied.ProfileTypeIdentifier != null)
{
mergedHeaders.ProfileTypeIdentifier = supplied.ProfileTypeIdentifier;
}
// If instanceId was supplied by caller, use it otherwise, create new
if (supplied.InstanceId != null)
{
mergedHeaders.InstanceId = supplied.InstanceId;
}
else
{
mergedHeaders.InstanceId = new InstanceId();
}
if (supplied.CreationDateAndTime != null)
{
mergedHeaders.CreationDateAndTime = supplied.CreationDateAndTime;
}
return(mergedHeaders);
}
public void Reset()
{
this.suppliedHeaderFields = new PeppolStandardBusinessHeader();
this.effectiveStandardBusinessHeader = null;
}
/// <summary>
/// Parses and extracts the data needed to create a PeppolStandardBusinessHeader object. The inputstream supplied
/// should not be wrapped in an SBDH.
/// </summary>
/// <param name="inputStream"></param>
/// <returns></returns>
public PeppolStandardBusinessHeader OriginalParse(Stream inputStream)
{
try
{
XDocument document = XDocument.Load(inputStream);
var nsResolver = new HardCodedNamespaceResolver();
PeppolStandardBusinessHeader sbdh =
PeppolStandardBusinessHeader.CreatePeppolStandardBusinessHeaderWithNewDate();
// use the plain UBL header parser to decode format and create correct document parser
PlainUblHeaderParser headerParser = new PlainUblHeaderParser(document, nsResolver);
// make sure we actually have a UBL type document
if (headerParser.CanParse())
{
sbdh.DocumentTypeIdentifier = headerParser.FetchDocumentTypeId().ToVefa();
sbdh.ProfileTypeIdentifier = headerParser.FetchProcessTypeId();
// try to use a specialized document parser to fetch more document details
IPeppolDocumentParser documentParser = null;
try
{
documentParser = headerParser.CreateDocumentParser();
}
catch (Exception)
{
/*
* allow this to happen so that "unknown" PEPPOL documents still
* can be used by explicitly setting sender and receiver thru API
*/
}
/* However, if we found an eligible parser, we should be able to determine the sender and receiver */
if (documentParser != null)
{
try
{
sbdh.SenderId = documentParser.Sender;
}
catch (Exception)
{
// Continue with recipient
}
try
{
sbdh.RecipientId = documentParser.Receiver;
}
catch (Exception)
{
// Just continue
}
}
}
return(sbdh);
}
catch (Exception e)
{
throw new HyperwayContentException("Unable to parse document " + e.Message, e);
}
}
