/**
* Prepare data as a Secure PDU and pass down to the MCS layer
*
* @param sec_data Data to send
* @param flags Encryption flags
* @param channel Channel over which to send data
* @throws RdesktopException
* @throws IOException
* @throws CryptoException
*/
public void send_to_channel(RdpPacket_Localised sec_data, int flags, int channel)
throws RdesktopException, IOException, CryptoException {
int datalength = 0;
byte[] signature = null;
byte[] data;
byte[] buffer;
sec_data.setPosition(sec_data.getHeader(RdpPacket.SECURE_HEADER));
if (this.licenceIssued == false || (flags & SEC_ENCRYPT) != 0) {
sec_data.setLittleEndian32(flags);
}
if (Options.debug_hexdump) {
int length = sec_data.getEnd() - sec_data.getPosition();
byte[] packet = new byte[length];
sec_data.copyToByteArray(
packet, 0, sec_data.getPosition(), sec_data.getEnd() - sec_data.getPosition());
System.out.println("Sending packet:");
System.out.println(net.propero.rdp.tools.HexDump.dumpHexString(packet));
}
if ((flags & SEC_ENCRYPT) != 0) {
flags &= ~SEC_ENCRYPT;
datalength = sec_data.getEnd() - sec_data.getPosition() - 8;
data = new byte[datalength];
buffer = null;
sec_data.copyToByteArray(data, 0, sec_data.getPosition() + 8, datalength);
signature = this.sign(this.sec_sign_key, 8, this.keylength, data, datalength);
buffer = this.encrypt(data, datalength);
sec_data.copyFromByteArray(signature, 0, sec_data.getPosition(), 8);
sec_data.copyFromByteArray(buffer, 0, sec_data.getPosition() + 8, datalength);
}
// McsLayer.send(sec_data);
McsLayer.send_to_channel(sec_data, channel);
}
