lib/gnutls_handshake.h

   1 /*
   2  * Copyright (C) 2000-2011 Free Software Foundation, Inc.
   3  *
   4  * Author: Nikos Mavrogiannopoulos
   5  *
   6  * This file is part of GnuTLS.
   7  *
   8  * The GnuTLS is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public License
  10  * as published by the Free Software Foundation; either version 3 of
  11  * the License, or (at your option) any later version.
  12  *
  13  * This library is distributed in the hope that it will be useful, but
  14  * WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * Lesser General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public License
  19  * along with this program.  If not, see <http://www.gnu.org/licenses/>
  20  *
  21  */
  22
  23 #ifndef HANDSHAKE_H
  24 #define HANDSHAKE_H
  25
  26 typedef enum Optional
  27 { OPTIONAL_PACKET, MANDATORY_PACKET } optional_t;
  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,
  36                         gnutls_handshake_description_t type,
  37                         optional_t optional, gnutls_buffer_st* buf);
  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
  46 int _gnutls_find_pk_algos_in_ciphersuites (opaque * data, int datalen);
  47 int _gnutls_server_select_suite (gnutls_session_t session, opaque * data,
  48                                  int datalen);
  49
  50 int _gnutls_negotiate_version (gnutls_session_t session,
  51                                gnutls_protocol_t adv_version);
  52 int _gnutls_user_hello_func (gnutls_session_t session,
  53                              gnutls_protocol_t adv_version);
  54
  55 void _gnutls_handshake_hash_buffers_clear (gnutls_session_t session);
  56
  57 #define STATE session->internals.handshake_state
  58 /* This returns true if we have got there
  59  * before (and not finished due to an interrupt).
  60  */
  61 #define AGAIN(target) (STATE==target?1:0)
  62 #define AGAIN2(state, target) (state==target?1:0)
  63
  64 #endif