/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */

/* GIO - GLib Input, Output and Streaming Library

 * 

 * Copyright (C) 2006-2007 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/>.

 *

 * Author: Alexander Larsson <alexl@redhat.com>

 *         David Zeuthen <davidz@redhat.com>

 */

#include "config.h"

#include <string.h>

#include <sys/wait.h>

#include <unistd.h>

#include <glib.h>

#include "gsubprocess.h"

#include "gioenums.h"

#include "gunixvolumemonitor.h"

#include "gunixmount.h"

#include "gunixmounts.h"

#include "gunixvolume.h"

#include "gmountprivate.h"

#include "gmount.h"

#include "gfile.h"

#include "gvolumemonitor.h"

#include "gthemedicon.h"

#include "gioerror.h"

#include "glibintl.h"

/* for BUFSIZ */

#include <stdio.h>

struct _GUnixMount {

  GObject parent;

  GVolumeMonitor   *volume_monitor;

  GUnixVolume      *volume; /* owned by volume monitor */

  char *name;

  GIcon *icon;

  GIcon *symbolic_icon;

  char *device_path;

  char *mount_path;

  gboolean can_eject;

};

static void g_unix_mount_mount_iface_init (GMountIface *iface);

#define g_unix_mount_get_type _g_unix_mount_get_type

G_DEFINE_TYPE_WITH_CODE (GUnixMount, g_unix_mount, G_TYPE_OBJECT,

       G_IMPLEMENT_INTERFACE (G_TYPE_MOUNT,

            g_unix_mount_mount_iface_init))

static void

g_unix_mount_finalize (GObject *object)

{

  GUnixMount *mount;

  mount = G_UNIX_MOUNT (object);

  if (mount->volume_monitor != NULL)

    g_object_unref (mount->volume_monitor);

  if (mount->volume)

    _g_unix_volume_unset_mount (mount->volume, mount);

  /* TODO: g_warn_if_fail (volume->volume == NULL); */

  g_object_unref (mount->icon);

  g_object_unref (mount->symbolic_icon);

  g_free (mount->name);

  g_free (mount->device_path);

  g_free (mount->mount_path);

  G_OBJECT_CLASS (g_unix_mount_parent_class)->finalize (object);

}

static void

g_unix_mount_class_init (GUnixMountClass *klass)

{

  GObjectClass *gobject_class = G_OBJECT_CLASS (klass);

  gobject_class->finalize = g_unix_mount_finalize;

}

static void

g_unix_mount_init (GUnixMount *unix_mount)

{

}

GUnixMount *

_g_unix_mount_new (GVolumeMonitor  *volume_monitor,

                   GUnixMountEntry *mount_entry,

                   GUnixVolume     *volume)

{

  GUnixMount *mount;

  /* No volume for mount: Ignore internal things */

  if (volume == NULL && !g_unix_mount_guess_should_display (mount_entry))

    return NULL;

  mount = g_object_new (G_TYPE_UNIX_MOUNT, NULL);

  mount->volume_monitor = volume_monitor != NULL ? g_object_ref (volume_monitor) : NULL;

  mount->device_path = g_strdup (g_unix_mount_get_device_path (mount_entry));

  mount->mount_path = g_strdup (g_unix_mount_get_mount_path (mount_entry));

  mount->can_eject = g_unix_mount_guess_can_eject (mount_entry);

  mount->name = g_unix_mount_guess_name (mount_entry);

  mount->icon = g_unix_mount_guess_icon (mount_entry);

  mount->symbolic_icon = g_unix_mount_guess_symbolic_icon (mount_entry);

  /* need to do this last */

  mount->volume = volume;

  if (volume != NULL)

    _g_unix_volume_set_mount (volume, mount);

  return mount;

}

void

_g_unix_mount_unmounted (GUnixMount *mount)

{

  if (mount->volume != NULL)

    {

      _g_unix_volume_unset_mount (mount->volume, mount);

      mount->volume = NULL;

      g_signal_emit_by_name (mount, "changed");

      /* there's really no need to emit mount_changed on the volume monitor 

       * as we're going to be deleted.. */

    }

}

void

_g_unix_mount_unset_volume (GUnixMount *mount,

                            GUnixVolume  *volume)

{

  if (mount->volume == volume)

    {

      mount->volume = NULL;

      /* TODO: Emit changed in idle to avoid locking issues */

      g_signal_emit_by_name (mount, "changed");

      if (mount->volume_monitor != NULL)

        g_signal_emit_by_name (mount->volume_monitor, "mount-changed", mount);

    }

}

static GFile *

g_unix_mount_get_root (GMount *mount)

{

  GUnixMount *unix_mount = G_UNIX_MOUNT (mount);

  return g_file_new_for_path (unix_mount->mount_path);

}

static GIcon *

g_unix_mount_get_icon (GMount *mount)

{

  GUnixMount *unix_mount = G_UNIX_MOUNT (mount);

  return g_object_ref (unix_mount->icon);

}

static GIcon *

g_unix_mount_get_symbolic_icon (GMount *mount)

{

  GUnixMount *unix_mount = G_UNIX_MOUNT (mount);

  return g_object_ref (unix_mount->symbolic_icon);

}

static char *

g_unix_mount_get_uuid (GMount *mount)

{

  return NULL;

}

static char *

g_unix_mount_get_name (GMount *mount)

{

  GUnixMount *unix_mount = G_UNIX_MOUNT (mount);

  return g_strdup (unix_mount->name);

}

gboolean

_g_unix_mount_has_mount_path (GUnixMount *mount,

                              const char  *mount_path)

{

  return strcmp (mount->mount_path, mount_path) == 0;

}

static GDrive *

g_unix_mount_get_drive (GMount *mount)

{

  GUnixMount *unix_mount = G_UNIX_MOUNT (mount);

  if (unix_mount->volume != NULL)

    return g_volume_get_drive (G_VOLUME (unix_mount->volume));

  return NULL;

}

static GVolume *

g_unix_mount_get_volume (GMount *mount)

{

  GUnixMount *unix_mount = G_UNIX_MOUNT (mount);

  if (unix_mount->volume)

    return G_VOLUME (g_object_ref (unix_mount->volume));

  return NULL;

}

static gboolean

g_unix_mount_can_unmount (GMount *mount)

{

  return TRUE;

}

static gboolean

g_unix_mount_can_eject (GMount *mount)

{

  GUnixMount *unix_mount = G_UNIX_MOUNT (mount);

  return unix_mount->can_eject;

}

static void

eject_unmount_done (GObject      *source,

                    GAsyncResult *result,

                    gpointer      user_data)

{

  GSubprocess *subprocess = G_SUBPROCESS (source);

  GTask *task = user_data;

  GError *error = NULL;

  gchar *stderr_str;

  if (!g_subprocess_communicate_utf8_finish (subprocess, result, NULL, &stderr_str, &error))

    {

      g_task_return_error (task, error);

      g_error_free (error);

    }

  else /* successful communication */

    {

      if (!g_subprocess_get_successful (subprocess))

        /* ...but bad exit code */

        g_task_return_new_error (task, G_IO_ERROR, G_IO_ERROR_FAILED, "%s", stderr_str);

      else

        /* ...and successful exit code */

        g_task_return_boolean (task, TRUE);

      g_free (stderr_str);

    }

  g_object_unref (task);

}

static gboolean

eject_unmount_do_cb (gpointer user_data)

{

  GTask *task = user_data;

  GError *error = NULL;

  GSubprocess *subprocess;

  const gchar **argv;

  argv = g_task_get_task_data (task);

  if (g_task_return_error_if_cancelled (task))

    {

      g_object_unref (task);

      return G_SOURCE_REMOVE;

    }

  subprocess = g_subprocess_newv (argv, G_SUBPROCESS_FLAGS_STDOUT_SILENCE | G_SUBPROCESS_FLAGS_STDERR_PIPE, &error);

  g_assert_no_error (error);

  g_subprocess_communicate_utf8_async (subprocess, NULL,

                                       g_task_get_cancellable (task),

                                       eject_unmount_done, task);

  return G_SOURCE_REMOVE;

}

static void

eject_unmount_do (GMount              *mount,

                  GCancellable        *cancellable,

                  GAsyncReadyCallback  callback,

                  gpointer             user_data,

                  char               **argv,

                  const gchar         *task_name)

{

  GUnixMount *unix_mount = G_UNIX_MOUNT (mount);

  GTask *task;

  GSource *timeout;

  task = g_task_new (mount, cancellable, callback, user_data);

  g_task_set_source_tag (task, eject_unmount_do);

  g_task_set_name (task, task_name);

  g_task_set_task_data (task, g_strdupv (argv), (GDestroyNotify) g_strfreev);

  if (unix_mount->volume_monitor != NULL)

    g_signal_emit_by_name (unix_mount->volume_monitor, "mount-pre-unmount", mount);

  g_signal_emit_by_name (mount, "pre-unmount", 0);

  timeout = g_timeout_source_new (500);

  g_task_attach_source (task, timeout, (GSourceFunc) eject_unmount_do_cb);

  g_source_unref (timeout);

}

static void

g_unix_mount_unmount (GMount             *mount,

                      GMountUnmountFlags flags,

                      GCancellable        *cancellable,

                      GAsyncReadyCallback  callback,

                      gpointer             user_data)

{

  GUnixMount *unix_mount = G_UNIX_MOUNT (mount);

  char *argv[] = {"umount", NULL, NULL};

  if (unix_mount->mount_path != NULL)

    argv[1] = unix_mount->mount_path;

  else

    argv[1] = unix_mount->device_path;

  eject_unmount_do (mount, cancellable, callback, user_data, argv, "[gio] unmount mount");

}

static gboolean

g_unix_mount_unmount_finish (GMount       *mount,

                             GAsyncResult  *result,

                             GError       **error)

{

  return g_task_propagate_boolean (G_TASK (result), error);

}

static void

g_unix_mount_eject (GMount             *mount,

                    GMountUnmountFlags flags,

                    GCancellable        *cancellable,

                    GAsyncReadyCallback  callback,

                    gpointer             user_data)

{

  GUnixMount *unix_mount = G_UNIX_MOUNT (mount);

  char *argv[] = {"eject", NULL, NULL};

  if (unix_mount->mount_path != NULL)

    argv[1] = unix_mount->mount_path;

  else

    argv[1] = unix_mount->device_path;

  eject_unmount_do (mount, cancellable, callback, user_data, argv, "[gio] eject mount");

}

static gboolean

g_unix_mount_eject_finish (GMount       *mount,

                           GAsyncResult  *result,

                           GError       **error)

{

  return g_task_propagate_boolean (G_TASK (result), error);

}

static void

g_unix_mount_mount_iface_init (GMountIface *iface)

{

  iface->get_root = g_unix_mount_get_root;

  iface->get_name = g_unix_mount_get_name;

  iface->get_icon = g_unix_mount_get_icon;

  iface->get_symbolic_icon = g_unix_mount_get_symbolic_icon;

  iface->get_uuid = g_unix_mount_get_uuid;

  iface->get_drive = g_unix_mount_get_drive;

  iface->get_volume = g_unix_mount_get_volume;

  iface->can_unmount = g_unix_mount_can_unmount;

  iface->can_eject = g_unix_mount_can_eject;

  iface->unmount = g_unix_mount_unmount;

  iface->unmount_finish = g_unix_mount_unmount_finish;

  iface->eject = g_unix_mount_eject;

  iface->eject_finish = g_unix_mount_eject_finish;

}