/* comopt.c - Common options for GnUPG (common.conf)

 * Copyright (C) 2021 g10 Code GmbH

 *

 * This file is part of GnuPG.

 *

 * This file is free software; you can redistribute it and/or modify

 * it under the terms of either

 *

 *   - the GNU Lesser General Public License as published by the Free

 *     Software Foundation; either version 3 of the License, or (at

 *     your option) any later version.

 *

 * or

 *

 *   - 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.

 *

 * or both in parallel, as here.

 *

 * This file 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, see <https://www.gnu.org/licenses/>.

 * SPDX-License-Identifier: (LGPL-3.0-or-later OR GPL-2.0-or-later)

 */

#include <config.h>

#include <stdlib.h>

#include <errno.h>

#include <ctype.h>

#include "util.h"

#include "i18n.h"

#include "comopt.h"

enum opt_values

  {

    aNull = 0,

    oLogFile = 500,

    oUseKeyboxd,

    oKeyboxdProgram,

    oNoAutostart,

    oNoop

  };

static gpgrt_opt_t opts[] = {

  ARGPARSE_s_s (oLogFile,        "log-file", "@"),

  ARGPARSE_s_n (oUseKeyboxd,     "use-keyboxd", "@"),

  ARGPARSE_s_n (oNoAutostart,    "no-autostart", "@"),

  ARGPARSE_s_s (oKeyboxdProgram, "keyboxd-program", "@"),

  ARGPARSE_end ()

};

struct gnupg_comopt_s comopt = {NULL};

/* Parse the common options in the homedir and etc.  This needs to be

 * called after the gpgrt config directories are set.  MODULE_ID is one of

 * the GNUPG_MODULE_NAME_ constants.  If verbose is true info about

 * the parsing is printed.  Note that this function is not

 * thread-safe. */

gpg_error_t

parse_comopt (int module_id, int verbose)

{

  gpg_error_t err = 0;

  gpgrt_argparse_t pargs;

  int argc = 0;

  char **argv = NULL;

  /* Reset all options in case we are called a second time.  */

  xfree (comopt.logfile);

  xfree (comopt.keyboxd_program);

  memset (&comopt, 0, sizeof comopt);

  /* Start the parser.  */

  pargs.argc = &argc;

  pargs.argv = &argv;

  pargs.flags = (ARGPARSE_FLAG_NOVERSION

                 | ARGPARSE_FLAG_SYS

                 | ARGPARSE_FLAG_USER

                 );

  while (gpgrt_argparser (&pargs, opts, "common" EXTSEP_S "conf" ))

    {

      switch (pargs.r_opt)

        {

        case ARGPARSE_CONFFILE:

          if (verbose)

            log_info (_("reading options from '%s'\n"),

                      pargs.r_type? pargs.r.ret_str: "[cmdline]");

          break;

        case oLogFile:

          comopt.logfile = pargs.r.ret_str;

          break;

        case oUseKeyboxd:

          comopt.use_keyboxd = 1;

          break;

        case oNoAutostart:

          comopt.no_autostart = 1;

          break;

        case oKeyboxdProgram:

          comopt.keyboxd_program = pargs.r.ret_str;

          break;

        default:

          pargs.err = ARGPARSE_PRINT_WARNING;

          err = gpg_error (GPG_ERR_GENERAL);

          break;

        }

    }

  gpgrt_argparse (NULL, &pargs, NULL);  /* Release internal state.  */

  if (comopt.logfile && !(!strncmp (comopt.logfile, "socket:", 7)

                          || !strncmp (comopt.logfile, "tcp:", 4)) )

    {

      /* Letting all modules write to the same log file is not a good

       * idea.  Append the module name.  */

      char *p;

      p = xstrconcat (comopt.logfile, "-", gnupg_module_name (module_id), NULL);

      xfree (comopt.logfile);

      comopt.logfile = p;

    }

  return err;

}