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/*
 * Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005 Free Software Foundation
 *
 * Author: 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
 * USA
 *
 */

typedef enum Optional { OPTIONAL_PACKET, MANDATORY_PACKET } Optional;

int _gnutls_send_handshake(gnutls_session_t session, void *i_data,
			   uint32 i_datasize, gnutls_handshake_description_t type);
int _gnutls_recv_hello_request(gnutls_session_t session, void *data,
			       uint32 data_size);
int _gnutls_send_hello(gnutls_session_t session, int again);
int _gnutls_recv_hello(gnutls_session_t session, opaque * data,
		       int datalen);
int _gnutls_recv_handshake(gnutls_session_t session, uint8 **, int *,
			   gnutls_handshake_description_t, Optional optional);
int _gnutls_generate_session_id(opaque * session_id, uint8 * len);
int _gnutls_handshake_common(gnutls_session_t session);
int _gnutls_handshake_client(gnutls_session_t session);
int _gnutls_handshake_server(gnutls_session_t session);
void _gnutls_set_server_random(gnutls_session_t session, uint8 * rnd);
void _gnutls_set_client_random(gnutls_session_t session, uint8 * rnd);
int _gnutls_tls_create_random(opaque * dst);
int _gnutls_remove_unwanted_ciphersuites(gnutls_session_t session,
					 cipher_suite_st ** cipherSuites,
					 int numCipherSuites,
					 gnutls_pk_algorithm_t);
int _gnutls_find_pk_algos_in_ciphersuites(opaque * data, int datalen);
int _gnutls_server_select_suite(gnutls_session_t session, opaque * data,
				int datalen);

#define STATE session->internals.handshake_state
/* This returns true if we have got there
 * before (and not finished due to an interrupt).
 */
#define AGAIN(target) STATE==target?1:0