/*
 * Copyright (C) 2000 Nikos Mavroyanopoulos
 *
 * This file is part of GNUTLS.
 *
 *  The GNUTLS library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Lesser General Public   
 *  License as published by the Free Software Foundation; either 
 *  version 2.1 of the License, or (at your option) any later version.
 *
 *  This library is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of 
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 *  Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public
 *  License along with this library; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307  USA
 *
 */

/* This file contains the functions which convert the TLS plaintext
 * packet to TLS compressed packet.
 */

#include "gnutls_int.h"
#include "gnutls_compress.h"
#include "gnutls_errors.h"
#include "gnutls_compress_int.h"

/* These functions allocate the return value internally
 */
int _gnutls_m_plaintext2compressed(gnutls_session session,
						     gnutls_datum*
						     compress,
						     gnutls_datum plaintext)
{
	int size;
	char *data;
	
	size = _gnutls_compress( session->connection_state.write_compression_state,
		plaintext.data, plaintext.size, &data, MAX_RECORD_SEND_SIZE+1024);
	if (size < 0) {
		gnutls_assert();
		return GNUTLS_E_COMPRESSION_FAILED;
	}
	compress->data = data;
	compress->size = size;

	return 0;
}

int _gnutls_m_compressed2plaintext(gnutls_session session,
						     gnutls_datum* plain,
						     gnutls_datum
						     compressed)
{
	int size;
	char* data;

	size = _gnutls_decompress( session->connection_state.read_compression_state,
		compressed.data, compressed.size, &data, MAX_RECORD_RECV_SIZE);
	if (size < 0) {
		gnutls_assert();
		return GNUTLS_E_DECOMPRESSION_FAILED;
	}
	plain->data = data;
	plain->size = size;

	return 0;
}