/* GIO - GLib Input, Output and Streaming Library

 *

 * Copyright 2018, Red Hat, Inc.

 *

 * SPDX-License-Identifier: LGPL-2.1-or-later

 *

 * This library 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.

 *

 * This library 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 library; if not, see <http://www.gnu.org/licenses/>.

 */

#include "config.h"

#include <sys/stat.h>

#include <fcntl.h>

#include <errno.h>

#include <string.h>

#include "gtrashportal.h"

#include "xdp-dbus.h"

#include "gstdio.h"

#ifdef G_OS_UNIX

#include "gunixfdlist.h"

#endif

#ifndef O_CLOEXEC

#define O_CLOEXEC 0

#else

#define HAVE_O_CLOEXEC 1

#endif

#ifndef O_PATH

#define O_PATH 0

#endif

static GXdpTrash *

ensure_trash_portal (void)

{

  static GXdpTrash *trash = NULL;

  if (g_once_init_enter (&trash))

    {

      GDBusConnection *connection = g_bus_get_sync (G_BUS_TYPE_SESSION, NULL, NULL);

      GXdpTrash *proxy = NULL;

      if (connection != NULL)

        {

          proxy = gxdp_trash_proxy_new_sync (connection, 0,

                                             "org.freedesktop.portal.Desktop",

                                             "/org/freedesktop/portal/desktop",

                                             NULL, NULL);

          g_object_unref (connection);

        }

      g_once_init_leave (&trash, proxy);

    }

  return trash;

}

gboolean

g_trash_portal_trash_file (GFile   *file,

                           GError **error)

{

  char *path = NULL;

  GUnixFDList *fd_list = NULL;

  int fd, fd_in, errsv;

  gboolean ret = FALSE;

  guint portal_result = 0;

  GXdpTrash *proxy;

  proxy = ensure_trash_portal ();

  if (proxy == NULL)

    {

      g_set_error (error, G_IO_ERROR, G_IO_ERROR_NOT_INITIALIZED,

                   "Trash portal is not available");

      goto out;

    }

  path = g_file_get_path (file);

  fd = g_open (path, O_RDWR | O_CLOEXEC | O_NOFOLLOW);

  if (fd == -1 && errno == EISDIR)

    /* If it is a directory, fall back to O_PATH.

     * Remove O_NOFOLLOW since

     * a) we know it is a directory, not a symlink, and

     * b) the portal reject this combination

     */

    fd = g_open (path, O_PATH | O_CLOEXEC | O_RDONLY);

  errsv = errno;

  if (fd == -1)

    {

      g_set_error (error, G_IO_ERROR, g_io_error_from_errno (errsv),

                   "Failed to open %s", path);

      goto out;

    }

#ifndef HAVE_O_CLOEXEC

  fcntl (fd, F_SETFD, FD_CLOEXEC);

#endif

  fd_list = g_unix_fd_list_new ();

  fd_in = g_unix_fd_list_append (fd_list, fd, error);

  g_close (fd, NULL);

  if (fd_in == -1)

    goto out;

  ret = gxdp_trash_call_trash_file_sync (proxy,

                                         g_variant_new_handle (fd_in),

                                         fd_list,

                                         &portal_result,

                                         NULL,

                                         NULL,

                                         error);

  if (ret && portal_result != 1)

    {

      g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED, "Trash portal failed on %s", path);

      ret = FALSE;

    }

 out:

  g_clear_object (&fd_list);

  g_free (path);

  return ret;

}