Tizen 2.0 Release
[external/libgnutls26.git] / lib / gnutls_handshake.h
1 /*
2  * Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2009, 2010 Free
3  * Software Foundation, Inc.
4  *
5  * Author: Nikos Mavrogiannopoulos
6  *
7  * This file is part of GnuTLS.
8  *
9  * The GnuTLS is free software; you can redistribute it and/or
10  * modify it under the terms of the GNU Lesser General Public License
11  * as published by the Free Software Foundation; either version 2.1 of
12  * the License, or (at your option) any later version.
13  *
14  * This library is distributed in the hope that it will be useful, but
15  * WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
17  * Lesser General Public License for more details.
18  *
19  * You should have received a copy of the GNU Lesser General Public
20  * License along with this library; if not, write to the Free Software
21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
22  * USA
23  *
24  */
25
26 typedef enum Optional
27 { OPTIONAL_PACKET, MANDATORY_PACKET } Optional;
28
29 int _gnutls_send_handshake (gnutls_session_t session, mbuffer_st * bufel,
30                             gnutls_handshake_description_t type);
31 int _gnutls_recv_hello_request (gnutls_session_t session, void *data,
32                                 uint32_t data_size);
33 int _gnutls_send_hello (gnutls_session_t session, int again);
34 int _gnutls_recv_hello (gnutls_session_t session, opaque * data, int datalen);
35 int _gnutls_recv_handshake (gnutls_session_t session, uint8_t **, int *,
36                             gnutls_handshake_description_t,
37                             Optional optional);
38 int _gnutls_generate_session_id (opaque * session_id, uint8_t * len);
39 int _gnutls_handshake_common (gnutls_session_t session);
40 int _gnutls_handshake_client (gnutls_session_t session);
41 int _gnutls_handshake_server (gnutls_session_t session);
42 void _gnutls_set_server_random (gnutls_session_t session, uint8_t * rnd);
43 void _gnutls_set_client_random (gnutls_session_t session, uint8_t * rnd);
44 int _gnutls_tls_create_random (opaque * dst);
45 int _gnutls_remove_unwanted_ciphersuites (gnutls_session_t session,
46                                           cipher_suite_st ** cipherSuites,
47                                           int numCipherSuites,
48                                           gnutls_pk_algorithm_t);
49 int _gnutls_find_pk_algos_in_ciphersuites (opaque * data, int datalen);
50 int _gnutls_server_select_suite (gnutls_session_t session, opaque * data,
51                                  int datalen);
52
53 int _gnutls_negotiate_version (gnutls_session_t session,
54                                gnutls_protocol_t adv_version);
55 int _gnutls_user_hello_func (gnutls_session_t session,
56                              gnutls_protocol_t adv_version);
57
58 void _gnutls_handshake_hash_buffers_clear (gnutls_session_t session);
59
60 #define STATE session->internals.handshake_state
61 /* This returns true if we have got there
62  * before (and not finished due to an interrupt).
63  */
64 #define AGAIN(target) (STATE==target?1:0)
65 #define AGAIN2(state, target) (state==target?1:0)