/* run-setownertrust.c  - Test tool to perform ownertrust changes
 * Copyright (C) 2024 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 Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this program; if not, see <https://gnu.org/licenses/>.
 * SPDX-License-Identifier: LGPL-2.1-or-later
 */

/* We need to include config.h so that we know whether we are building
   with large file system (LFS) support. */
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <stdlib.h>
#include <stdio.h>
#include <string.h>

#include <gpgme.h>

#define PGM "run-setownertrust"

#include "run-support.h"


static gpg_error_t
status_cb (void *opaque, const char *keyword, const char *value)
{
  (void)opaque;
  fprintf (stderr, "status_cb: %s %s\n", nonnull(keyword), nonnull(value));
  return 0;
}


static int
show_usage (int ex)
{
  fputs ("usage: " PGM " [options] USERID VALUE\n"
         "Options:\n"
         "  --status         print status lines from the backend\n"
         , stderr);
  exit (ex);
}


int
main (int argc, char **argv)
{
  int last_argc = -1;
  gpgme_error_t err;
  gpgme_ctx_t ctx;
  gpgme_protocol_t protocol = GPGME_PROTOCOL_OpenPGP;
  int print_status = 0;
  const char *userid;
  const char *value;
  gpgme_key_t key;

  if (argc)
    { argc--; argv++; }

  while (argc && last_argc != argc )
    {
      last_argc = argc;
      if (!strcmp (*argv, "--"))
        {
          argc--; argv++;
          break;
        }
      else if (!strcmp (*argv, "--help"))
        show_usage (0);
      else if (!strcmp (*argv, "--status"))
        {
          print_status = 1;
          argc--; argv++;
        }
      else if (!strncmp (*argv, "--", 2))
        show_usage (1);
    }

  if (argc != 2)
    show_usage (1);
  userid = argv[0];
  value = argv[1];

  init_gpgme (protocol);

  err = gpgme_new (&ctx);
  fail_if_err (err);
  gpgme_set_protocol (ctx, protocol);
  gpgme_set_armor (ctx, 1);
  if (print_status)
    {
      gpgme_set_status_cb (ctx, status_cb, NULL);
      gpgme_set_ctx_flag (ctx, "full-status", "1");
    }

  err = gpgme_get_key (ctx, userid, &key, 0);
  if (err)
    {
      fprintf (stderr, PGM ": error getting public key for '%s': %s\n",
               userid, gpg_strerror (err));
      exit (1);
    }
  err = gpgme_op_setownertrust (ctx, key, value);
  if (err)
    {
      fprintf (stderr, PGM ": gpgme_op_setownertrust failed: %s\n",
               gpg_strerror (err));
      exit (1);
    }
  gpgme_key_unref (key);

  gpgme_release (ctx);
  return 0;
}