private PreLoginHandshakeStatus ConsumePreLoginHandshake(bool encrypt, bool trustServerCert, out bool marsCapable)
{
marsCapable = this._fMARS;
bool flag = false;
this._fAwaitingPreLogin = true;
this._physicalStateObj.ReadNetworkPacket();
this._fAwaitingPreLogin = false;
if ((this._physicalStateObj._inBytesRead == 0) || this._fPreLoginErrorOccurred)
{
if (encrypt)
{
this.Errors.Add(new SqlError(20, 0, 20, this._server, SQLMessage.EncryptionNotSupportedByServer(), "", 0));
this._physicalStateObj.Dispose();
this.ThrowExceptionAndWarning();
}
return PreLoginHandshakeStatus.SphinxFailure;
}
byte[] buff = new byte[(this._physicalStateObj._inBytesRead - this._physicalStateObj._inBytesUsed) - this._physicalStateObj._inputHeaderLen];
this._physicalStateObj.ReadByteArray(buff, 0, buff.Length);
if (buff[0] == 170)
{
throw SQL.InvalidSQLServerVersionUnknown();
}
int num = 0;
int index = 0;
for (int i = buff[num++]; i != 0xff; i = buff[num++])
{
System.Data.SqlClient.EncryptionOptions options;
switch (i)
{
case 0:
{
index = (buff[num++] << 8) | buff[num++];
byte num1 = buff[num++];
byte num10 = buff[num++];
byte num7 = buff[index];
byte num11 = buff[index + 1];
byte num12 = buff[index + 2];
byte num13 = buff[index + 3];
flag = num7 >= 9;
if (!flag)
{
marsCapable = false;
}
goto Label_0327;
}
case 1:
{
index = (buff[num++] << 8) | buff[num++];
byte num14 = buff[num++];
byte num15 = buff[num++];
options = (System.Data.SqlClient.EncryptionOptions) buff[index];
switch (this._encryptionOption)
{
case System.Data.SqlClient.EncryptionOptions.OFF:
goto Label_01D3;
case System.Data.SqlClient.EncryptionOptions.NOT_SUP:
goto Label_01EC;
}
goto Label_0227;
}
case 2:
goto Label_02BC;
case 3:
num += 4;
goto Label_0327;
case 4:
{
index = (buff[num++] << 8) | buff[num++];
byte num18 = buff[num++];
byte num19 = buff[num++];
marsCapable = buff[index] != 0;
goto Label_0327;
}
default:
num += 4;
goto Label_0327;
}
if (options == System.Data.SqlClient.EncryptionOptions.NOT_SUP)
{
this.Errors.Add(new SqlError(20, 0, 20, this._server, SQLMessage.EncryptionNotSupportedByServer(), "", 0));
this._physicalStateObj.Dispose();
this.ThrowExceptionAndWarning();
}
goto Label_0227;
Label_01D3:
if (options == System.Data.SqlClient.EncryptionOptions.OFF)
{
this._encryptionOption = System.Data.SqlClient.EncryptionOptions.LOGIN;
}
else if (options == System.Data.SqlClient.EncryptionOptions.REQ)
{
this._encryptionOption = System.Data.SqlClient.EncryptionOptions.ON;
}
goto Label_0227;
Label_01EC:
if (options == System.Data.SqlClient.EncryptionOptions.REQ)
{
this.Errors.Add(new SqlError(20, 0, 20, this._server, SQLMessage.EncryptionNotSupportedByClient(), "", 0));
this._physicalStateObj.Dispose();
this.ThrowExceptionAndWarning();
}
Label_0227:
if ((this._encryptionOption != System.Data.SqlClient.EncryptionOptions.ON) && (this._encryptionOption != System.Data.SqlClient.EncryptionOptions.LOGIN))
{
goto Label_0327;
}
uint info = (uint) (((encrypt && !trustServerCert) ? 1 : 0) | (flag ? 2 : 0));
if (SNINativeMethodWrapper.SNIAddProvider(this._physicalStateObj.Handle, SNINativeMethodWrapper.ProviderEnum.SSL_PROV, ref info) != 0)
{
this.Errors.Add(this.ProcessSNIError(this._physicalStateObj));
this.ThrowExceptionAndWarning();
}
try
{
goto Label_0327;
}
finally
{
this._physicalStateObj._sniPacket.Dispose();
this._physicalStateObj._sniPacket = new SNIPacket(this._physicalStateObj.Handle);
}
Label_02BC:
index = (buff[num++] << 8) | buff[num++];
byte num16 = buff[num++];
byte num17 = buff[num++];
byte num6 = 1;
byte num5 = buff[index];
if (num5 == num6)
{
return PreLoginHandshakeStatus.InstanceFailure;
}
Label_0327:
if (num >= buff.Length)
{
break;
}
}
return PreLoginHandshakeStatus.Successful;
}
private void SendPreLoginHandshake(byte[] instanceName, bool encrypt)
{
this._physicalStateObj._outputMessageType = 0x12;
int num2 = 0x1a;
byte[] b = new byte[0x419];
int index = 0;
for (int i = 0; i < 5; i++)
{
int num3;
int num4 = 0;
this.WriteByte((byte) i, this._physicalStateObj);
this.WriteByte((byte) (num2 & 0xff00), this._physicalStateObj);
this.WriteByte((byte) (num2 & 0xff), this._physicalStateObj);
switch (i)
{
case 0:
b[index++] = 0x10;
b[index++] = 0;
b[index++] = 0;
b[index++] = 0;
b[index++] = 0;
b[index++] = 0;
num2 += 6;
num4 = 6;
goto Label_0196;
case 1:
if (this._encryptionOption != System.Data.SqlClient.EncryptionOptions.NOT_SUP)
{
break;
}
b[index] = 2;
goto Label_00EA;
case 2:
num3 = 0;
goto Label_010C;
case 3:
{
int currentThreadIdForTdsLoginOnly = TdsParserStaticMethods.GetCurrentThreadIdForTdsLoginOnly();
b[index++] = (byte) (0xff000000L & currentThreadIdForTdsLoginOnly);
b[index++] = (byte) (0xff0000 & currentThreadIdForTdsLoginOnly);
b[index++] = (byte) (0xff00 & currentThreadIdForTdsLoginOnly);
b[index++] = (byte) (0xff & currentThreadIdForTdsLoginOnly);
num2 += 4;
num4 = 4;
goto Label_0196;
}
case 4:
b[index++] = this._fMARS ? ((byte) 1) : ((byte) 0);
num2++;
num4++;
goto Label_0196;
default:
goto Label_0196;
}
if (encrypt)
{
b[index] = 1;
this._encryptionOption = System.Data.SqlClient.EncryptionOptions.ON;
}
else
{
b[index] = 0;
this._encryptionOption = System.Data.SqlClient.EncryptionOptions.OFF;
}
Label_00EA:
index++;
num2++;
num4 = 1;
goto Label_0196;
Label_00FE:
b[index] = instanceName[num3];
index++;
num3++;
Label_010C:
if (instanceName[num3] != 0)
{
goto Label_00FE;
}
b[index] = 0;
index++;
num3++;
num2 += num3;
num4 = num3;
Label_0196:
this.WriteByte((byte) (num4 & 0xff00), this._physicalStateObj);
this.WriteByte((byte) (num4 & 0xff), this._physicalStateObj);
}
this.WriteByte(0xff, this._physicalStateObj);
this.WriteByteArray(b, index, 0, this._physicalStateObj);
this._physicalStateObj.WritePacket(1);
}
