lib/gnutls_buffers.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 #ifndef GNUTLS_BUFFERS_H
  23 #define GNUTLS_BUFFERS_H
  24
  25 #define MBUFFER_FLUSH 1
  26
  27 int
  28 _gnutls_record_buffer_put (gnutls_session_t session,
  29   content_type_t type, uint64* seq, mbuffer_st* bufel);
  30
  31 inline static int
  32 _gnutls_record_buffer_get_size (content_type_t type, gnutls_session_t session)
  33 {
  34   return session->internals.record_buffer.byte_length;
  35 }
  36
  37 int _gnutls_record_buffer_get (content_type_t type,
  38                                gnutls_session_t session, opaque * data,
  39                                size_t length, opaque seq[8]);
  40 ssize_t _gnutls_io_read_buffered (gnutls_session_t, size_t n, content_type_t);
  41 int _gnutls_io_clear_peeked_data (gnutls_session_t session);
  42
  43 ssize_t _gnutls_io_write_buffered (gnutls_session_t session,
  44                                    mbuffer_st * bufel, unsigned int mflag);
  45
  46 int _gnutls_handshake_io_cache_int (gnutls_session_t,
  47                                      gnutls_handshake_description_t,
  48                                      mbuffer_st * bufel);
  49
  50 ssize_t
  51 _gnutls_handshake_io_recv_int (gnutls_session_t session,
  52                                gnutls_handshake_description_t htype,
  53                                handshake_buffer_st * hsk);
  54
  55 ssize_t _gnutls_io_write_flush (gnutls_session_t session);
  56 int
  57 _gnutls_io_check_recv (gnutls_session_t session, unsigned int ms);
  58 ssize_t _gnutls_handshake_io_write_flush (gnutls_session_t session);
  59
  60 inline static void _gnutls_handshake_buffer_clear(handshake_buffer_st* hsk)
  61 {
  62   _gnutls_buffer_clear(&hsk->data);
  63   hsk->htype = -1;
  64 }
  65
  66 inline static void _gnutls_handshake_buffer_init(handshake_buffer_st* hsk)
  67 {
  68   memset(hsk, 0, sizeof(*hsk));
  69   _gnutls_buffer_init(&hsk->data);
  70   hsk->htype = -1;
  71 }
  72
  73 inline static void _gnutls_handshake_recv_buffer_clear(gnutls_session_t session)
  74 {
  75 int i;
  76   for (i=0;i<session->internals.handshake_recv_buffer_size;i++)
  77     _gnutls_handshake_buffer_clear(&session->internals.handshake_recv_buffer[i]);
  78   session->internals.handshake_recv_buffer_size = 0;
  79 }
  80
  81 inline static void _gnutls_handshake_recv_buffer_init(gnutls_session_t session)
  82 {
  83 int i;
  84   for (i=0;i<MAX_HANDSHAKE_MSGS;i++)
  85     {
  86       _gnutls_handshake_buffer_init(&session->internals.handshake_recv_buffer[i]);
  87     }
  88   session->internals.handshake_recv_buffer_size = 0;
  89 }
  90
  91 ssize_t
  92 _gnutls_recv_in_buffers (gnutls_session_t session, content_type_t type,
  93                   gnutls_handshake_description_t htype);
  94
  95 #define _gnutls_handshake_io_buffer_clear( session) \
  96         _mbuffer_head_clear( &session->internals.handshake_send_buffer); \
  97         _gnutls_handshake_recv_buffer_clear( session);
  98
  99 #endif