private void AcquireCredentials()
{
this.continueProcessing = true;
int num = MySqlWindowsAuthenticationPlugin.AcquireCredentialsHandle(null, "Negotiate", 2, IntPtr.Zero, IntPtr.Zero, 0, IntPtr.Zero, ref this.outboundCredentials, ref this.lifetime);
if (num != 0)
{
throw new MySqlException("AcquireCredentialsHandle failed with errorcode" + num);
}
}
private void InitializeClient(out byte[] clientBlob, byte[] serverBlob, out bool continueProcessing)
{
clientBlob = null;
continueProcessing = true;
SecBufferDesc secBufferDesc = new SecBufferDesc(12288);
SECURITY_INTEGER sECURITY_INTEGER = new SECURITY_INTEGER(0);
int num = -1;
try
{
uint num2 = 0u;
if (serverBlob == null)
{
num = MySqlWindowsAuthenticationPlugin.InitializeSecurityContext(ref this.outboundCredentials, IntPtr.Zero, this.targetName, 0, 0, 0, IntPtr.Zero, 0, out this.clientContext, out secBufferDesc, out num2, out sECURITY_INTEGER);
}
else
{
SecBufferDesc secBufferDesc2 = new SecBufferDesc(serverBlob);
try
{
num = MySqlWindowsAuthenticationPlugin.InitializeSecurityContext(ref this.outboundCredentials, ref this.clientContext, this.targetName, 0, 0, 0, ref secBufferDesc2, 0, out this.clientContext, out secBufferDesc, out num2, out sECURITY_INTEGER);
}
finally
{
secBufferDesc2.Dispose();
}
}
if (4115 == num || 4116 == num)
{
MySqlWindowsAuthenticationPlugin.CompleteAuthToken(ref this.clientContext, ref secBufferDesc);
}
if (num != 0 && num != 590610 && num != 4115 && num != 4116)
{
throw new MySqlException("InitializeSecurityContext() failed with errorcode " + num);
}
clientBlob = secBufferDesc.GetSecBufferByteArray();
}
finally
{
secBufferDesc.Dispose();
}
continueProcessing = (num != 0 && num != 4115);
}
protected override byte[] MoreData(byte[] moreData)
{
if (moreData == null)
{
this.AcquireCredentials();
}
byte[] array = null;
if (this.continueProcessing)
{
this.InitializeClient(out array, moreData, out this.continueProcessing);
}
if (!this.continueProcessing || array == null || array.Length == 0)
{
MySqlWindowsAuthenticationPlugin.FreeCredentialsHandle(ref this.outboundCredentials);
MySqlWindowsAuthenticationPlugin.DeleteSecurityContext(ref this.clientContext);
return(null);
}
return(array);
}