src/gnutls.h

/* GnuTLS glue for GNU Emacs.
   Copyright (C) 2010-2012  Free Software Foundation, Inc.

This file is part of GNU Emacs.

GNU Emacs is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

GNU Emacs 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 General Public License for more details.

You should have received a copy of the GNU General Public License
along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */

#ifndef EMACS_GNUTLS_DEFINED
#define EMACS_GNUTLS_DEFINED

#ifdef HAVE_GNUTLS
#include <gnutls/gnutls.h>
#include <gnutls/x509.h>

/* This limits the attempts to handshake per process (connection).  */
#define GNUTLS_EMACS_HANDSHAKES_LIMIT 100

typedef enum
{
  /* Initialization stages.  */
  GNUTLS_STAGE_EMPTY = 0,
  GNUTLS_STAGE_CRED_ALLOC,
  GNUTLS_STAGE_FILES,
  GNUTLS_STAGE_CALLBACKS,
  GNUTLS_STAGE_INIT,
  GNUTLS_STAGE_PRIORITY,
  GNUTLS_STAGE_CRED_SET,

  /* Handshake stages.  */
  GNUTLS_STAGE_HANDSHAKE_CANDO = GNUTLS_STAGE_CRED_SET,
  GNUTLS_STAGE_TRANSPORT_POINTERS_SET,
  GNUTLS_STAGE_HANDSHAKE_TRIED,

  GNUTLS_STAGE_READY,
} gnutls_initstage_t;

#define GNUTLS_EMACS_ERROR_NOT_LOADED GNUTLS_E_APPLICATION_ERROR_MIN + 1
#define GNUTLS_EMACS_ERROR_INVALID_TYPE GNUTLS_E_APPLICATION_ERROR_MIN

#define GNUTLS_INITSTAGE(proc) (XPROCESS (proc)->gnutls_initstage)

#define GNUTLS_PROCESS_USABLE(proc) (GNUTLS_INITSTAGE(proc) >= GNUTLS_STAGE_READY)

#define GNUTLS_LOG(level, max, string) do { if (level <= max) { gnutls_log_function (level, "(Emacs) " string); } } while (0)

#define GNUTLS_LOG2(level, max, string, extra) do { if (level <= max) { gnutls_log_function2 (level, "(Emacs) " string, extra); } } while (0)

#define GNUTLS_LOG2i(level, max, string, extra) do { if (level <= max) { gnutls_log_function2i (level, "(Emacs) " string, extra); } } while (0)

extern ptrdiff_t
emacs_gnutls_write (struct Lisp_Process *proc, const char *buf, ptrdiff_t nbyte);
extern ptrdiff_t
emacs_gnutls_read (struct Lisp_Process *proc, char *buf, ptrdiff_t nbyte);

extern int emacs_gnutls_record_check_pending (gnutls_session_t state);
extern void emacs_gnutls_transport_set_errno (gnutls_session_t state, int err);
extern Lisp_Object emacs_gnutls_deinit (Lisp_Object);

extern void syms_of_gnutls (void);

#endif

#endif
Commit	Line	Data
	1	/* GnuTLS glue for GNU Emacs.
	2	Copyright (C) 2010-2012 Free Software Foundation, Inc.
	3
	4	This file is part of GNU Emacs.
	5
	6	GNU Emacs is free software: you can redistribute it and/or modify
	7	it under the terms of the GNU General Public License as published by
	8	the Free Software Foundation, either version 3 of the License, or
	9	(at your option) any later version.
	10
	11	GNU Emacs is distributed in the hope that it will be useful,
	12	but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	14	GNU General Public License for more details.
	15
	16	You should have received a copy of the GNU General Public License
	17	along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
	18
	19	#ifndef EMACS_GNUTLS_DEFINED
	20	#define EMACS_GNUTLS_DEFINED
	21
	22	#ifdef HAVE_GNUTLS
	23	#include <gnutls/gnutls.h>
	24	#include <gnutls/x509.h>
	25
	26	/* This limits the attempts to handshake per process (connection). */
	27	#define GNUTLS_EMACS_HANDSHAKES_LIMIT 100
	28
	29	typedef enum
	30	{
	31	/* Initialization stages. */
	32	GNUTLS_STAGE_EMPTY = 0,
	33	GNUTLS_STAGE_CRED_ALLOC,
	34	GNUTLS_STAGE_FILES,
	35	GNUTLS_STAGE_CALLBACKS,
	36	GNUTLS_STAGE_INIT,
	37	GNUTLS_STAGE_PRIORITY,
	38	GNUTLS_STAGE_CRED_SET,
	39
	40	/* Handshake stages. */
	41	GNUTLS_STAGE_HANDSHAKE_CANDO = GNUTLS_STAGE_CRED_SET,
	42	GNUTLS_STAGE_TRANSPORT_POINTERS_SET,
	43	GNUTLS_STAGE_HANDSHAKE_TRIED,
	44
	45	GNUTLS_STAGE_READY,
	46	} gnutls_initstage_t;
	47
	48	#define GNUTLS_EMACS_ERROR_NOT_LOADED GNUTLS_E_APPLICATION_ERROR_MIN + 1
	49	#define GNUTLS_EMACS_ERROR_INVALID_TYPE GNUTLS_E_APPLICATION_ERROR_MIN
	50
	51	#define GNUTLS_INITSTAGE(proc) (XPROCESS (proc)->gnutls_initstage)
	52
	53	#define GNUTLS_PROCESS_USABLE(proc) (GNUTLS_INITSTAGE(proc) >= GNUTLS_STAGE_READY)
	54
	55	#define GNUTLS_LOG(level, max, string) do { if (level <= max) { gnutls_log_function (level, "(Emacs) " string); } } while (0)
	56
	57	#define GNUTLS_LOG2(level, max, string, extra) do { if (level <= max) { gnutls_log_function2 (level, "(Emacs) " string, extra); } } while (0)
	58
	59	#define GNUTLS_LOG2i(level, max, string, extra) do { if (level <= max) { gnutls_log_function2i (level, "(Emacs) " string, extra); } } while (0)
	60
	61	extern ptrdiff_t
	62	emacs_gnutls_write (struct Lisp_Process proc, const char buf, ptrdiff_t nbyte);
	63	extern ptrdiff_t
	64	emacs_gnutls_read (struct Lisp_Process proc, char buf, ptrdiff_t nbyte);
	65
	66	extern int emacs_gnutls_record_check_pending (gnutls_session_t state);
	67	extern void emacs_gnutls_transport_set_errno (gnutls_session_t state, int err);
	68	extern Lisp_Object emacs_gnutls_deinit (Lisp_Object);
	69
	70	extern void syms_of_gnutls (void);
	71
	72	#endif
	73
	74	#endif