gpgme/gpgme/encrypt-sign.c

/* encrypt-sign.c -  encrypt and verify functions
 *	Copyright (C) 2000 Werner Koch (dd9jn)
 *      Copyright (C) 2001, 2002 g10 Code GmbH
 *
 * This file is part of GPGME.
 *
 * GPGME 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 2 of the License, or
 * (at your option) any later version.
 *
 * GPGME 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 this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>

#include "util.h"
#include "context.h"
#include "ops.h"


static void
encrypt_sign_status_handler (GpgmeCtx ctx, GpgmeStatusCode code, char *args)
{
  _gpgme_encrypt_status_handler (ctx, code, args);
  _gpgme_sign_status_handler (ctx, code, args);
}


static GpgmeError
_gpgme_op_encrypt_sign_start (GpgmeCtx ctx, int synchronous,
			      GpgmeRecipients recp,
			      GpgmeData plain, GpgmeData cipher)
{
  GpgmeError err = 0;

  err = _gpgme_op_reset (ctx, synchronous);
  if (err)
    goto leave;

  err = _gpgme_passphrase_start (ctx);
  if (err)
    goto leave;

  _gpgme_engine_set_status_handler (ctx->engine,
				    encrypt_sign_status_handler, ctx);
  _gpgme_engine_set_verbosity (ctx->engine, ctx->verbosity);

  /* Check the supplied data */
  if (!plain)
    {
      err = mk_error (No_Data);
      goto leave;
    }
  if (!cipher)
    {
      err = mk_error (Invalid_Value);
      goto leave;
    }

  err = _gpgme_engine_op_encrypt_sign (ctx->engine, recp, plain, cipher,
				       ctx->use_armor, ctx /* FIXME */);

  if (!err)	/* And kick off the process.  */
    err = _gpgme_engine_start (ctx->engine, ctx);

 leave:
  if (err)
    {
      ctx->pending = 0; 
      _gpgme_engine_release (ctx->engine);
      ctx->engine = NULL;
    }
  return err;
}

GpgmeError
gpgme_op_encrypt_sign_start (GpgmeCtx ctx, GpgmeRecipients recp,
			      GpgmeData plain, GpgmeData cipher)
{
  return _gpgme_op_encrypt_sign_start (ctx, 0, recp, plain, cipher);
}


/**
 * gpgme_op_encrypt_sign:
 * @ctx: The context
 * @recp: The set of recipients
 * @plain: plaintext input
 * @cipher: signed ciphertext
 * 
 * This function encrypts @plain for all recipients in recp, signs it,
 * and returns the ciphertext in @out.  The function does wait for the
 * result.
 * 
 * Return value:  0 on success or an errorcode. 
 **/
GpgmeError
gpgme_op_encrypt_sign (GpgmeCtx ctx, GpgmeRecipients recp,
		       GpgmeData plain, GpgmeData cipher)
{
  GpgmeError err = _gpgme_op_encrypt_sign_start (ctx, 1, recp, plain, cipher);
  if (!err)
    err = _gpgme_wait_one (ctx);
  return err;
}