//------------------------------------------------------
//
// Internal Properties
//
//------------------------------------------------------
/// <summary>
/// Get certificate part - null if none
/// </summary>
internal CertificatePart GetCertificatePart()
{
// lazy init
if (_certificatePart == null && !_alreadyLookedForCertPart)
{
PackageRelationshipCollection relationships = SignaturePart.GetRelationshipsByType(
CertificatePart.RelationshipType);
foreach (PackageRelationship relationship in relationships)
{
// don't resolve if external
if (relationship.TargetMode != TargetMode.Internal)
{
throw new FileFormatException(SR.Get(SRID.PackageSignatureCorruption));
}
Uri resolvedUri = PackUriHelper.ResolvePartUri(SignaturePart.Uri, relationship.TargetUri);
// don't create if it doesn't exist
if (!_manager.Package.PartExists(resolvedUri))
{
continue;
}
// find the cert
_certificatePart = new CertificatePart(_manager.Package, resolvedUri);
break;
}
_alreadyLookedForCertPart = true;
}
return(_certificatePart);
}
public PackageRelationshipCollection GetRelationshipsByType(string relationshipType)
{
PackageRelationshipCollection collection = new PackageRelationshipCollection();
foreach (PackageRelationship r in Relationships.Values)
{
if (r.RelationshipType == relationshipType)
{
collection.Relationships.Add(r);
}
}
return(collection);
}
