static IAuthorizationPolicy RetrievePolicyFromBlob(byte[] contextBlob, string id, DateTime expirationTime, IList <Type> knownTypes)
{
if (contextBlob == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("contextBlob");
}
if (id == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("id");
}
SctClaimDictionary claimDictionary = SctClaimDictionary.Instance;
XmlDictionaryReader reader = XmlDictionaryReader.CreateBinaryReader(contextBlob, 0, contextBlob.Length, claimDictionary, XmlDictionaryReaderQuotas.Max, null, null);
IList <IIdentity> identities = null;
IList <ClaimSet> claimSets = null;
int versionNumber = -1;
reader.ReadFullStartElement(claimDictionary.SecurityContextSecurityToken, claimDictionary.EmptyString);
while (reader.IsStartElement())
{
if (reader.IsStartElement(claimDictionary.Version, claimDictionary.EmptyString))
{
versionNumber = reader.ReadElementContentAsInt();
if (versionNumber != 1)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new NotSupportedException(SR2.GetString(SR2.SerializedAuthorizationContextVersionUnsupported, versionNumber)));
}
}
else
{
if (reader.IsStartElement(claimDictionary.Identities, claimDictionary.EmptyString))
{
identities = SctClaimSerializer.DeserializeIdentities(reader, claimDictionary, DataContractSerializerDefaults.CreateSerializer(typeof(IIdentity), knownTypes, 0x7fffffff));
continue;
}
if (reader.IsStartElement(claimDictionary.ClaimSets, claimDictionary.EmptyString))
{
reader.ReadStartElement();
DataContractSerializer claimSetSerializer = DataContractSerializerDefaults.CreateSerializer(typeof(ClaimSet), knownTypes, 0x7fffffff);
DataContractSerializer claimSerializer = DataContractSerializerDefaults.CreateSerializer(typeof(Claim), knownTypes, 0x7fffffff);
claimSets = new List <ClaimSet>(1);
while (reader.IsStartElement())
{
claimSets.Add(SctClaimSerializer.DeserializeClaimSet(reader, claimDictionary, claimSetSerializer, claimSerializer));
}
reader.ReadEndElement();
continue;
}
}
}
reader.ReadEndElement();
return(new SctUnconditionalPolicy(identities, id, claimSets, expirationTime));
}
static byte[] CreateSerializableBlob(AuthorizationContext authorizationContext, IList <Type> knownTypes)
{
if (authorizationContext == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("authorizationContext");
}
MemoryStream stream = new MemoryStream();
XmlDictionaryWriter writer = XmlDictionaryWriter.CreateBinaryWriter(stream, SctClaimDictionary.Instance, null);
SctClaimDictionary claimDictionary = SctClaimDictionary.Instance;
writer.WriteStartElement(claimDictionary.SecurityContextSecurityToken, claimDictionary.EmptyString);
writer.WriteStartElement(claimDictionary.Version, claimDictionary.EmptyString);
writer.WriteValue(1);
writer.WriteEndElement();
if ((authorizationContext != null) && (authorizationContext.ClaimSets.Count != 0))
{
DataContractSerializer identitySerializer = DataContractSerializerDefaults.CreateSerializer(typeof(IIdentity), knownTypes, 0x7fffffff);
DataContractSerializer claimSetSerializer = DataContractSerializerDefaults.CreateSerializer(typeof(ClaimSet), knownTypes, 0x7fffffff);
DataContractSerializer claimSerializer = DataContractSerializerDefaults.CreateSerializer(typeof(Claim), knownTypes, 0x7fffffff);
SctClaimSerializer.SerializeIdentities(authorizationContext, claimDictionary, writer, identitySerializer);
writer.WriteStartElement(claimDictionary.ClaimSets, claimDictionary.EmptyString);
for (int i = 0; i < authorizationContext.ClaimSets.Count; i++)
{
SctClaimSerializer.SerializeClaimSet(authorizationContext.ClaimSets[i], claimDictionary, writer, claimSetSerializer, claimSerializer);
}
writer.WriteEndElement();
}
writer.WriteEndElement();
writer.Flush();
return(stream.ToArray());
}
