void ReleaseAuth()
{
_srp256 = null;
_srp = null;
_sspi?.Dispose();
_sspi = null;
}
public void Identify(string database)
{
using (var xdrStream = CreateXdrStreamImpl(false))
{
try
{
xdrStream.Write(IscCodes.op_connect);
xdrStream.Write(IscCodes.op_attach);
xdrStream.Write(IscCodes.CONNECT_VERSION3);
xdrStream.Write(IscCodes.GenericAchitectureClient);
xdrStream.Write(database);
var protocols = ProtocolsSupported.Get(_compression);
xdrStream.Write(protocols.Count());
xdrStream.WriteBuffer(UserIdentificationData());
var priority = 0;
foreach (var protocol in protocols)
{
xdrStream.Write(protocol.Version);
xdrStream.Write(IscCodes.GenericAchitectureClient);
xdrStream.Write(protocol.MinPType);
xdrStream.Write(protocol.MaxPType);
xdrStream.Write(priority);
priority++;
}
xdrStream.Flush();
var operation = xdrStream.ReadOperation();
if (operation == IscCodes.op_accept || operation == IscCodes.op_cond_accept || operation == IscCodes.op_accept_data)
{
_protocolVersion = xdrStream.ReadInt32();
_protocolArchitecture = xdrStream.ReadInt32();
_protocolMinimunType = xdrStream.ReadInt32();
if (_protocolVersion < 0)
{
_protocolVersion = (ushort)(_protocolVersion & IscCodes.FB_PROTOCOL_MASK) | IscCodes.FB_PROTOCOL_FLAG;
}
if (_compression && !((_protocolMinimunType & IscCodes.pflag_compress) != 0))
{
_compression = false;
}
if (operation == IscCodes.op_cond_accept || operation == IscCodes.op_accept_data)
{
var data = xdrStream.ReadBuffer();
var acceptPluginName = xdrStream.ReadString();
var isAuthenticated = xdrStream.ReadBoolean();
var keys = xdrStream.ReadString();
if (!isAuthenticated)
{
switch (acceptPluginName)
{
case SrpClient.PluginName:
_authData = Encoding.ASCII.GetBytes(_srp.ClientProof(NormalizeLogin(_userID), _password, data).ToHexString());
break;
case SspiHelper.PluginName:
_authData = _sspi.GetClientSecurity(data);
break;
default:
throw new ArgumentOutOfRangeException(nameof(acceptPluginName), $"{nameof(acceptPluginName)}={acceptPluginName}");
}
}
}
}
else if (operation == IscCodes.op_response)
{
var response = (GenericResponse)ProcessOperation(operation, xdrStream);
throw response.Exception;
}
else
{
try
{
Disconnect();
}
catch
{ }
finally
{
throw IscException.ForErrorCode(IscCodes.isc_connect_reject);
}
}
}
catch (IOException ex)
{
throw IscException.ForErrorCode(IscCodes.isc_network_error, ex);
}
finally
{
// UserIdentificationData might allocate these
_srp = null;
_sspi?.Dispose();
_sspi = null;
}
}
}