101 lines
3.0 KiB
C
101 lines
3.0 KiB
C
/* GnuTLS glue for GNU Emacs.
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Copyright (C) 2010-2024 Free Software Foundation, Inc.
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This file is part of GNU Emacs.
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GNU Emacs is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or (at
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your option) any later version.
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GNU Emacs is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>. */
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#ifndef EMACS_GNUTLS_DEFINED
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#define EMACS_GNUTLS_DEFINED
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#ifdef HAVE_GNUTLS
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#include <gnutls/gnutls.h>
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#include <gnutls/x509.h>
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#if 0x030000 <= GNUTLS_VERSION_NUMBER
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# define HAVE_GNUTLS3
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# include <gnutls/crypto.h>
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#endif
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#include "lisp.h"
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/* This limits the attempts to handshake per process (connection). It
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should work out to about one minute in asynchronous cases. */
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#define GNUTLS_EMACS_HANDSHAKES_LIMIT 6000
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typedef enum
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{
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/* Initialization stages. */
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GNUTLS_STAGE_EMPTY = 0,
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GNUTLS_STAGE_CRED_ALLOC,
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GNUTLS_STAGE_FILES,
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GNUTLS_STAGE_CALLBACKS,
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GNUTLS_STAGE_INIT,
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GNUTLS_STAGE_PRIORITY,
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GNUTLS_STAGE_CRED_SET,
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/* Handshake stages. */
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GNUTLS_STAGE_HANDSHAKE_CANDO = GNUTLS_STAGE_CRED_SET,
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GNUTLS_STAGE_TRANSPORT_POINTERS_SET,
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GNUTLS_STAGE_HANDSHAKE_TRIED,
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GNUTLS_STAGE_READY
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} gnutls_initstage_t;
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#define GNUTLS_EMACS_ERROR_NOT_LOADED (GNUTLS_E_APPLICATION_ERROR_MIN + 1)
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#define GNUTLS_EMACS_ERROR_INVALID_TYPE GNUTLS_E_APPLICATION_ERROR_MIN
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#define GNUTLS_INITSTAGE(proc) (XPROCESS (proc)->gnutls_initstage)
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#define GNUTLS_PROCESS_USABLE(proc) \
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(GNUTLS_INITSTAGE (proc) >= GNUTLS_STAGE_READY)
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#define GNUTLS_LOG(level, max, string) \
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do { \
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if ((level) <= (max)) \
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gnutls_log_function (level, "(Emacs) " string); \
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} while (false)
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#define GNUTLS_LOG2(level, max, string, extra) \
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do { \
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if ((level) <= (max)) \
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gnutls_log_function2 (level, "(Emacs) " string, extra); \
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} while (false)
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#define GNUTLS_LOG2i(level, max, string, extra) \
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do { \
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if ((level) <= (max)) \
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message ("gnutls.c: [%d] %s %d", level, string, extra); \
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} while (false)
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extern ptrdiff_t
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emacs_gnutls_write (struct Lisp_Process *proc, const char *buf, ptrdiff_t nbyte);
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extern ptrdiff_t
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emacs_gnutls_read (struct Lisp_Process *proc, char *buf, ptrdiff_t nbyte);
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extern ptrdiff_t emacs_gnutls_record_check_pending (gnutls_session_t state);
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#ifdef WINDOWSNT
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extern void emacs_gnutls_transport_set_errno (gnutls_session_t state, int err);
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extern int w32_gnutls_rnd (gnutls_rnd_level_t, void *, size_t);
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#endif
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extern Lisp_Object emacs_gnutls_deinit (Lisp_Object);
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extern int gnutls_try_handshake (struct Lisp_Process *p);
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extern Lisp_Object gnutls_verify_boot (Lisp_Object proc, Lisp_Object proplist);
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#endif
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extern void syms_of_gnutls (void);
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#endif
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