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/* GIO - GLib Input, Output and Streaming Library
*
* Copyright (C) 2006-2007 Red Hat, Inc.
*
* 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 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, write to the
* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
* Author: Alexander Larsson <alexl@redhat.com>
*/
#include <config.h>
#include <string.h>
#include "gdaemonfilemonitor.h"
#include <gio/gio.h>
#include <gvfsdaemondbus.h>
#include <gvfsdaemonprotocol.h>
#include "gmountspec.h"
#include "gdaemonfile.h"
#include <gvfsdbus.h>
#define OBJ_PATH_PREFIX "/org/gtk/vfs/client/filemonitor/"
/* atomic */
static volatile gint path_counter = 1;
static gboolean g_daemon_file_monitor_cancel (GFileMonitor* monitor);
struct _GDaemonFileMonitor
{
GFileMonitor parent_instance;
char *object_path;
char *remote_obj_path;
char *remote_id;
GVfsDBusMonitor *proxy; /* Non-null if we're subscribed */
GVfsDBusMonitorClient *skeleton;
};
G_DEFINE_TYPE (GDaemonFileMonitor, g_daemon_file_monitor, G_TYPE_FILE_MONITOR)
static void
g_daemon_file_monitor_finalize (GObject* object)
{
GDaemonFileMonitor *daemon_monitor;
daemon_monitor = G_DAEMON_FILE_MONITOR (object);
if (daemon_monitor->skeleton)
{
g_dbus_interface_skeleton_unexport (G_DBUS_INTERFACE_SKELETON (daemon_monitor->skeleton));
g_object_unref (daemon_monitor->skeleton);
}
g_clear_object (&daemon_monitor->proxy);
g_free (daemon_monitor->object_path);
g_free (daemon_monitor->remote_id);
g_free (daemon_monitor->remote_obj_path);
if (G_OBJECT_CLASS (g_daemon_file_monitor_parent_class)->finalize)
(*G_OBJECT_CLASS (g_daemon_file_monitor_parent_class)->finalize) (object);
}
static void
g_daemon_file_monitor_class_init (GDaemonFileMonitorClass* klass)
{
GObjectClass* gobject_class = G_OBJECT_CLASS (klass);
GFileMonitorClass *file_monitor_class = G_FILE_MONITOR_CLASS (klass);
gobject_class->finalize = g_daemon_file_monitor_finalize;
file_monitor_class->cancel = g_daemon_file_monitor_cancel;
}
static gboolean
handle_changed (GVfsDBusMonitorClient *object,
GDBusMethodInvocation *invocation,
guint arg_event_type,
GVariant *arg_mount_spec,
const gchar *arg_file_path,
GVariant *arg_other_mount_spec,
const gchar *arg_other_file_path,
gpointer user_data)
{
GDaemonFileMonitor *monitor = G_DAEMON_FILE_MONITOR (user_data);
GMountSpec *spec1, *spec2;
GFile *file1, *file2;
spec1 = g_mount_spec_from_dbus (arg_mount_spec);
file1 = g_daemon_file_new (spec1, arg_file_path);
g_mount_spec_unref (spec1);
file2 = NULL;
if (strlen (arg_other_file_path) > 0)
{
spec2 = g_mount_spec_from_dbus (arg_other_mount_spec);
file2 = g_daemon_file_new (spec2, arg_other_file_path);
g_mount_spec_unref (spec2);
}
g_file_monitor_emit_event (G_FILE_MONITOR (monitor),
file1, file2,
arg_event_type);
gvfs_dbus_monitor_client_complete_changed (object, invocation);
return TRUE;
}
static void
g_daemon_file_monitor_init (GDaemonFileMonitor* daemon_monitor)
{
gint id;
id = g_atomic_int_add (&path_counter, 1);
daemon_monitor->object_path = g_strdup_printf (OBJ_PATH_PREFIX"%d", id);
daemon_monitor->skeleton = gvfs_dbus_monitor_client_skeleton_new ();
g_signal_connect (daemon_monitor->skeleton, "handle-changed", G_CALLBACK (handle_changed), daemon_monitor);
}
static void
subscribe_cb (GVfsDBusMonitor *proxy,
GAsyncResult *res,
GDaemonFileMonitor* monitor)
{
GError *error = NULL;
if (! gvfs_dbus_monitor_call_subscribe_finish (proxy, res, &error))
{
g_printerr ("Error calling org.gtk.vfs.Monitor.Subscribe(): %s (%s, %d)\n",
error->message, g_quark_to_string (error->domain), error->code);
g_error_free (error);
}
/* If its cancelled already, unsubscribe and don't save stuff */
if (g_file_monitor_is_cancelled (G_FILE_MONITOR (monitor)))
{
gvfs_dbus_monitor_call_unsubscribe (proxy,
monitor->object_path,
NULL, NULL, NULL);
g_object_unref (monitor);
return;
}
monitor->proxy = g_object_ref (proxy);
g_object_unref (monitor);
}
GFileMonitor*
g_daemon_file_monitor_new (const char *remote_id,
const char *remote_obj_path)
{
GDaemonFileMonitor* daemon_monitor;
GDBusConnection *connection;
GError *error = NULL;
GVfsDBusMonitor *proxy;
daemon_monitor = g_object_new (G_TYPE_DAEMON_FILE_MONITOR, NULL);
daemon_monitor->remote_id = g_strdup (remote_id);
daemon_monitor->remote_obj_path = g_strdup (remote_obj_path);
connection = _g_dbus_connection_get_sync (daemon_monitor->remote_id, NULL, &error);
if (connection == NULL && !g_error_matches (error, G_IO_ERROR, G_IO_ERROR_CANCELLED))
{
g_dbus_error_strip_remote_error (error);
g_warning ("The peer-to-peer connection failed: %s. Falling back to the "
"session bus. Your application is probably missing "
"--filesystem=xdg-run/gvfsd privileges.", error->message);
g_clear_error (&error);
connection = g_bus_get_sync (G_BUS_TYPE_SESSION, NULL, &error);
}
if (connection == NULL)
{
g_printerr ("Error getting connection for monitoring: %s (%s, %d)\n",
error->message, g_quark_to_string (error->domain), error->code);
g_error_free (error);
}
else
{
if (!g_dbus_interface_skeleton_export (G_DBUS_INTERFACE_SKELETON (daemon_monitor->skeleton),
connection,
daemon_monitor->object_path,
&error))
{
g_warning ("Error registering path: %s (%s, %d)\n",
error->message, g_quark_to_string (error->domain), error->code);
g_error_free (error);
}
/* This looks like a sync call, but since the remote_id is a
unique id we don't actually send any messages */
proxy = gvfs_dbus_monitor_proxy_new_sync (connection,
G_DBUS_PROXY_FLAGS_DO_NOT_LOAD_PROPERTIES | G_DBUS_PROXY_FLAGS_DO_NOT_CONNECT_SIGNALS,
daemon_monitor->remote_id,
daemon_monitor->remote_obj_path,
NULL,
&error);
if (proxy == NULL)
{
g_printerr ("Error creating monitor proxy: %s (%s, %d)\n",
error->message, g_quark_to_string (error->domain), error->code);
g_error_free (error);
}
else
{
/* We set the proxy in the callback, meaning we're subscribed if it is set */
gvfs_dbus_monitor_call_subscribe (proxy,
daemon_monitor->object_path,
NULL,
(GAsyncReadyCallback) subscribe_cb,
g_object_ref (daemon_monitor));
g_object_unref (proxy);
/* At this point it is safe to return the monitor, even if we have not gotten
the reply to the subscribe yet, because any i/o we do to the mount such
as listing a directory will happen after the mount receives the subscribe
message */
}
}
return G_FILE_MONITOR (daemon_monitor);
}
static gboolean
g_daemon_file_monitor_cancel (GFileMonitor* monitor)
{
GDaemonFileMonitor *daemon_monitor = G_DAEMON_FILE_MONITOR (monitor);
if (daemon_monitor->proxy != NULL)
gvfs_dbus_monitor_call_unsubscribe (daemon_monitor->proxy,
daemon_monitor->object_path,
NULL, NULL, NULL);
return TRUE;
}
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