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)