internal /*virtual*/ void CheckRecordHeader(byte[] recordHeader)
{
byte type = TlsUtilities.ReadUint8(recordHeader, TLS_HEADER_TYPE_OFFSET);
/*
* RFC 5246 6. If a TLS implementation receives an unexpected record type, it MUST send an
* unexpected_message alert.
*/
CheckType(type, AlertDescription.unexpected_message);
if (!mRestrictReadVersion)
{
int version = TlsUtilities.ReadVersionRaw(recordHeader, TLS_HEADER_VERSION_OFFSET);
if ((version & 0xffffff00) != 0x0300)
{
throw new TlsFatalAlert(AlertDescription.illegal_parameter);
}
}
else
{
ProtocolVersion version = TlsUtilities.ReadVersion(recordHeader, TLS_HEADER_VERSION_OFFSET);
if (mReadVersion == null)
{
// Will be set later in 'readRecord'
}
else if (!version.Equals(mReadVersion))
{
throw new TlsFatalAlert(AlertDescription.illegal_parameter);
}
}
int length = TlsUtilities.ReadUint16(recordHeader, TLS_HEADER_LENGTH_OFFSET);
CheckLength(length, mCiphertextLimit, AlertDescription.record_overflow);
}
internal /*virtual*/ bool ReadRecord()
{
BufferSegment recordHeader = TlsUtilities.ReadAllOrNothing(TLS_HEADER_SIZE, mInput);
if (recordHeader == BufferSegment.Empty)
{
return(false);
}
byte type = TlsUtilities.ReadUint8(recordHeader.Data, TLS_HEADER_TYPE_OFFSET);
/*
* RFC 5246 6. If a TLS implementation receives an unexpected record type, it MUST send an
* unexpected_message alert.
*/
CheckType(type, AlertDescription.unexpected_message);
if (!mRestrictReadVersion)
{
int version = TlsUtilities.ReadVersionRaw(recordHeader.Data, TLS_HEADER_VERSION_OFFSET);
if ((version & 0xffffff00) != 0x0300)
{
throw new TlsFatalAlert(AlertDescription.illegal_parameter);
}
}
else
{
ProtocolVersion version = TlsUtilities.ReadVersion(recordHeader.Data, TLS_HEADER_VERSION_OFFSET);
if (mReadVersion == null)
{
mReadVersion = version;
}
else if (!version.Equals(mReadVersion))
{
throw new TlsFatalAlert(AlertDescription.illegal_parameter);
}
}
int length = TlsUtilities.ReadUint16(recordHeader.Data, TLS_HEADER_LENGTH_OFFSET);
BufferPool.Release(recordHeader.Data);
CheckLength(length, mCiphertextLimit, AlertDescription.record_overflow);
BufferSegment plaintext = DecodeAndVerify(type, mInput, length);
mHandler.ProcessRecord(type, plaintext.Data, plaintext.Offset, plaintext.Count);
BufferPool.Release(plaintext);
return(true);
}
internal virtual bool ReadRecord()
{
byte[] recordHeader = TlsUtilities.ReadAllOrNothing(TLS_HEADER_SIZE, mInput);
if (recordHeader == null)
{
return(false);
}
byte type = TlsUtilities.ReadUint8(recordHeader, TLS_HEADER_TYPE_OFFSET);
/*
* RFC 5246 6. If a TLS implementation receives an unexpected record type, it MUST send an
* unexpected_message alert.
*/
CheckType(type, AlertDescription.unexpected_message);
if (!mRestrictReadVersion)
{
int version = TlsUtilities.ReadVersionRaw(recordHeader, TLS_HEADER_VERSION_OFFSET);
if ((version & 0xffffff00) != 0x0300)
{
throw new TlsFatalAlert(AlertDescription.illegal_parameter);
}
}
else
{
ProtocolVersion version = TlsUtilities.ReadVersion(recordHeader, TLS_HEADER_VERSION_OFFSET);
if (mReadVersion == null)
{
mReadVersion = version;
}
else if (!version.Equals(mReadVersion))
{
throw new TlsFatalAlert(AlertDescription.illegal_parameter);
}
}
int length = TlsUtilities.ReadUint16(recordHeader, TLS_HEADER_LENGTH_OFFSET);
byte[] plaintext = DecodeAndVerify(type, mInput, length);
mHandler.ProcessRecord(type, plaintext, 0, plaintext.Length);
return(true);
}
internal virtual bool ReadRecord()
{
byte[] array = TlsUtilities.ReadAllOrNothing(5, mInput);
if (array == null)
{
return(false);
}
byte b = TlsUtilities.ReadUint8(array, 0);
CheckType(b, 10);
if (!mRestrictReadVersion)
{
int num = TlsUtilities.ReadVersionRaw(array, 1);
if ((num & 4294967040u) != 768)
{
throw new TlsFatalAlert(47);
}
}
else
{
ProtocolVersion protocolVersion = TlsUtilities.ReadVersion(array, 1);
if (mReadVersion == null)
{
mReadVersion = protocolVersion;
}
else if (!protocolVersion.Equals(mReadVersion))
{
throw new TlsFatalAlert(47);
}
}
int len = TlsUtilities.ReadUint16(array, 3);
byte[] array2 = DecodeAndVerify(b, mInput, len);
mHandler.ProcessRecord(b, array2, 0, array2.Length);
return(true);
}