/* run-tofu.c  - Test tool for Tofu functions

 * Copyright (C) 2016 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 <assert.h>

#include <gpgme.h>

#define PGM "run-tofu"

#include "run-support.h"

static int verbose;

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 gpgme_tofu_policy_t

parse_policy_string (const char *string)

{

  gpgme_tofu_policy_t policy;

  if (!strcmp (string, "auto"))

    policy = GPGME_TOFU_POLICY_AUTO;

  else if (!strcmp (string, "good"))

    policy = GPGME_TOFU_POLICY_GOOD;

  else if (!strcmp (string, "bad"))

    policy = GPGME_TOFU_POLICY_BAD;

  else if (!strcmp (string, "ask"))

    policy = GPGME_TOFU_POLICY_ASK;

  else if (!strcmp (string, "unknown"))

    policy = GPGME_TOFU_POLICY_UNKNOWN;

  else

    {

      fprintf (stderr, PGM ": invalid policy value '%s'\n", string);

      exit (1);

    }

  return policy;

}

static int

show_usage (int ex)

{

  fputs ("usage: " PGM " [options] FPR\n\n"

         "Options:\n"

         "  --policy NAME    Set tofu policy for key to NAME\n"

         "  --verbose        run in verbose mode\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;

  gpgme_key_t thekey;

  const char *fpr;

  const char *policystr = NULL;

  gpgme_tofu_policy_t policy;

  const char *s;

  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, "--verbose"))

        {

          verbose = 1;

          argc--; argv++;

        }

      else if (!strcmp (*argv, "--status"))

        {

          print_status = 1;

          argc--; argv++;

        }

      else if (!strcmp (*argv, "--policy"))

        {

          argc--; argv++;

          if (!argc)

            show_usage (1);

          policystr = *argv;

          argc--; argv++;

        }

      else if (!strncmp (*argv, "--", 2))

        show_usage (1);

    }

  if (argc != 1)

    show_usage (1);

  fpr = argv[0];

  init_gpgme (protocol);

  err = gpgme_new (&ctx;;

  fail_if_err (err);

  gpgme_set_protocol (ctx, protocol);

  gpgme_set_armor (ctx, 1);

  s = gpgme_get_ctx_flag (ctx, "no_such-flag");

  if (s)

    {

      fprintf (stderr, PGM ": gpgme_get_ctx_flag failed "

               "(bad name not detected)\n");

      exit (1);

    }

  s = gpgme_get_ctx_flag (ctx, "full-status");

  if (!s || *s)

    {

      fprintf (stderr, PGM ": gpgme_get_ctx_flag failed (wrong false)\n");

      exit (1);

    }

  if (print_status)

    {

      gpgme_set_status_cb (ctx, status_cb, NULL);

      gpgme_set_ctx_flag (ctx, "full-status", "1");

      s = gpgme_get_ctx_flag (ctx, "full-status");

      if (!s || strcmp (s, "1"))

        {

          fprintf (stderr, PGM ": gpgme_get_ctx_flag fauled (wrong true)\n");

          exit (1);

        }

    }

  err = gpgme_get_key (ctx, fpr, &thekey, 0);

  if (err)

    {

      fprintf (stderr, PGM ": error getting key '%s': %s\n",

               fpr, gpg_strerror (err));

      exit (1);

    }

  if (policystr)

    {

      policy = parse_policy_string (policystr);

      err = gpgme_op_tofu_policy (ctx, thekey, policy);

      if (err)

        {

          fprintf (stderr, PGM ": gpgme_op_tofu_polciy failed: %s\n",

                   gpg_strerror (err));

          exit (1);

        }

    }

  gpgme_key_unref (thekey);

  gpgme_release (ctx);

  return 0;

}