* this file is part of evince, a gnome document viewer
*
* Copyright (C) 2009 Carlos Garcia Campos <carlosgc@gnome.org>
+ * Copyright © 2010 Christian Persch
*
* Evince is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by
#include <sys/wait.h>
#include <fcntl.h>
#include <unistd.h>
-#include <dbus/dbus-glib-bindings.h>
-#include <dbus/dbus-glib-lowlevel.h>
-#define EV_DBUS_DAEMON_NAME "org.gnome.evince.Daemon"
-#define EV_DBUS_DAEMON_OBJECT_PATH "/org/gnome/evince/Daemon"
+#define EV_DBUS_DAEMON_NAME "org.gnome.evince.Daemon"
+#define EV_DBUS_DAEMON_INTERFACE_NAME "org.gnome.evince.Daemon"
+#define EV_DBUS_DAEMON_OBJECT_PATH "/org/gnome/evince/Daemon"
-#define EV_TYPE_DAEMON (ev_daemon_get_type ())
-#define EV_DAEMON(object) (G_TYPE_CHECK_INSTANCE_CAST((object), EV_TYPE_DAEMON, EvDaemon))
-#define EV_DAEMON_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass), EV_TYPE_DAEMON, EvDaemonClass))
-#define EV_IS_DAEMON(object) (G_TYPE_CHECK_INSTANCE_TYPE((object), EV_TYPE_DAEMON))
+#define DAEMON_TIMEOUT (30) /* seconds */
-typedef struct _EvDaemon EvDaemon;
-typedef struct _EvDaemonClass EvDaemonClass;
-
-struct _EvDaemon {
- GObject base;
-
- DBusGProxy *bus_proxy;
-
- GList *docs;
- guint n_docs;
-
- guint timer_id;
-};
-
-struct _EvDaemonClass {
- GObjectClass base_class;
-};
-
-static GType ev_daemon_get_type (void) G_GNUC_CONST;
-static gboolean ev_daemon_register_document (EvDaemon *ev_daemon,
- const gchar *uri,
- DBusGMethodInvocation *context);
-static gboolean ev_daemon_unregister_document (EvDaemon *ev_daemon,
- const gchar *uri,
- DBusGMethodInvocation *context);
-#include "ev-daemon-service.h"
-
-static EvDaemon *ev_daemon = NULL;
-
-G_DEFINE_TYPE(EvDaemon, ev_daemon, G_TYPE_OBJECT)
+static GList *ev_daemon_docs = NULL;
+static guint kill_timer_id;
typedef struct {
gchar *dbus_name;
gchar *uri;
+ guint watch_id;
} EvDoc;
static void
g_free (doc->dbus_name);
g_free (doc->uri);
+ g_bus_unwatch_name (doc->watch_id);
+
g_free (doc);
}
static EvDoc *
-ev_daemon_find_doc (EvDaemon *ev_daemon,
- const gchar *uri)
+ev_daemon_find_doc (const gchar *uri)
{
GList *l;
- for (l = ev_daemon->docs; l; l = g_list_next (l)) {
+ for (l = ev_daemon_docs; l != NULL; l = l->next) {
EvDoc *doc = (EvDoc *)l->data;
if (strcmp (doc->uri, uri) == 0)
}
static void
-ev_daemon_finalize (GObject *object)
-{
- EvDaemon *ev_daemon = EV_DAEMON (object);
-
- if (ev_daemon->docs) {
- g_list_foreach (ev_daemon->docs, (GFunc)ev_doc_free, NULL);
- g_list_free (ev_daemon->docs);
- ev_daemon->docs = NULL;
- }
-
- if (ev_daemon->bus_proxy) {
- g_object_unref (ev_daemon->bus_proxy);
- ev_daemon->bus_proxy = NULL;
- }
-
- G_OBJECT_CLASS (ev_daemon_parent_class)->finalize (object);
-}
-
-static void
-ev_daemon_init (EvDaemon *ev_daemon)
-{
-}
-
-static void
-ev_daemon_class_init (EvDaemonClass *klass)
+ev_daemon_stop_killtimer (void)
{
- GObjectClass *g_object_class = G_OBJECT_CLASS (klass);
-
- g_object_class->finalize = ev_daemon_finalize;
-
- dbus_g_object_type_install_info (EV_TYPE_DAEMON,
- &dbus_glib_ev_daemon_object_info);
+ if (kill_timer_id != 0)
+ g_source_remove (kill_timer_id);
+ kill_timer_id = 0;
}
static gboolean
-ev_daemon_shutdown (EvDaemon *ev_daemon)
+ev_daemon_shutdown (gpointer user_data)
{
- g_object_unref (ev_daemon);
-
- return FALSE;
-}
+ GMainLoop *loop = (GMainLoop *) user_data;
-static void
-ev_daemon_stop_killtimer (EvDaemon *ev_daemon)
-{
- if (ev_daemon->timer_id != 0)
- g_source_remove (ev_daemon->timer_id);
- ev_daemon->timer_id = 0;
-}
+ if (g_main_loop_is_running (loop))
+ g_main_loop_quit (loop);
-static void
-ev_daemon_start_killtimer (EvDaemon *ev_daemon)
-{
- ev_daemon_stop_killtimer (ev_daemon);
- ev_daemon->timer_id =
- g_timeout_add_seconds (30,
- (GSourceFunc) ev_daemon_shutdown,
- ev_daemon);
+ return FALSE;
}
static void
-ev_daemon_name_owner_changed (DBusGProxy *proxy,
- const gchar *name,
- const gchar *old_owner,
- const gchar *new_owner,
- EvDaemon *ev_daemon)
-{
- GList *l, *next = NULL;
-
- if (*name == ':' && *new_owner == '\0') {
- for (l = ev_daemon->docs; l; l = next) {
- EvDoc *doc = (EvDoc *)l->data;
-
- next = l->next;
- if (strcmp (doc->dbus_name, name) == 0) {
- ev_doc_free (doc);
- ev_daemon->docs = g_list_delete_link (ev_daemon->docs, l);
- if (--ev_daemon->n_docs == 0)
- ev_daemon_start_killtimer (ev_daemon);
- }
- }
- }
-}
-
-static EvDaemon *
-ev_daemon_get (void)
-{
- DBusGConnection *connection;
- guint request_name_result;
- GError *error = NULL;
-
- if (ev_daemon)
- return ev_daemon;
-
- connection = dbus_g_bus_get (DBUS_BUS_STARTER, &error);
- if (!connection) {
- g_printerr ("Failed to connect to the D-BUS daemon: %s\n", error->message);
- g_error_free (error);
-
- return NULL;
- }
-
- ev_daemon = g_object_new (EV_TYPE_DAEMON, NULL);
-
- ev_daemon->bus_proxy = dbus_g_proxy_new_for_name (connection,
- DBUS_SERVICE_DBUS,
- DBUS_PATH_DBUS,
- DBUS_INTERFACE_DBUS);
- if (!org_freedesktop_DBus_request_name (ev_daemon->bus_proxy,
- EV_DBUS_DAEMON_NAME,
- DBUS_NAME_FLAG_DO_NOT_QUEUE,
- &request_name_result, &error)) {
- g_printerr ("Failed to acquire daemon name: %s", error->message);
- g_error_free (error);
- g_object_unref (ev_daemon);
-
- return NULL;
- }
-
- switch (request_name_result) {
- case DBUS_REQUEST_NAME_REPLY_EXISTS:
- g_printerr ("Evince daemon already running, exiting.\n");
- g_object_unref (ev_daemon);
-
- return NULL;
- case DBUS_REQUEST_NAME_REPLY_PRIMARY_OWNER:
- dbus_g_connection_register_g_object (connection,
- EV_DBUS_DAEMON_OBJECT_PATH,
- G_OBJECT (ev_daemon));
- break;
- default:
- g_printerr ("Not primary owner of the service, exiting.\n");
- g_object_unref (ev_daemon);
-
- return NULL;
- }
-
-
- dbus_g_proxy_add_signal (ev_daemon->bus_proxy,
- "NameOwnerChanged",
- G_TYPE_STRING,
- G_TYPE_STRING,
- G_TYPE_STRING,
- G_TYPE_INVALID);
- dbus_g_proxy_connect_signal (ev_daemon->bus_proxy, "NameOwnerChanged",
- G_CALLBACK (ev_daemon_name_owner_changed),
- ev_daemon, NULL);
- ev_daemon_start_killtimer (ev_daemon);
-
- return ev_daemon;
-}
-
-
-
-static gboolean
-ev_daemon_register_document (EvDaemon *ev_daemon,
- const gchar *uri,
- DBusGMethodInvocation *method)
-{
- EvDoc *doc;
- const gchar *owner = NULL;
-
- doc = ev_daemon_find_doc (ev_daemon, uri);
- if (doc) {
- /* Already registered */
- owner = doc->dbus_name;
- } else {
- doc = g_new (EvDoc, 1);
- doc->dbus_name = dbus_g_method_get_sender (method);
- doc->uri = g_strdup (uri);
- ev_daemon->docs = g_list_prepend (ev_daemon->docs, doc);
- if (ev_daemon->n_docs++ == 0)
- ev_daemon_stop_killtimer (ev_daemon);
- }
-
- dbus_g_method_return (method, owner);
-
- return TRUE;
-}
-
-static gboolean
-ev_daemon_unregister_document (EvDaemon *ev_daemon,
- const gchar *uri,
- DBusGMethodInvocation *method)
+ev_daemon_maybe_start_killtimer (gpointer data)
{
- EvDoc *doc;
- gchar *sender;
-
- doc = ev_daemon_find_doc (ev_daemon, uri);
- if (!doc) {
- g_warning ("Document %s is not registered\n", uri);
- dbus_g_method_return (method);
-
- return TRUE;
- }
-
- sender = dbus_g_method_get_sender (method);
- if (strcmp (doc->dbus_name, sender) != 0) {
- g_warning ("Failed to unregister document %s: invalid owner %s, expected %s\n",
- uri, sender, doc->dbus_name);
- g_free (sender);
- dbus_g_method_return (method);
-
- return TRUE;
- }
- g_free (sender);
-
- ev_daemon->docs = g_list_remove (ev_daemon->docs, doc);
- ev_doc_free (doc);
- if (--ev_daemon->n_docs == 0)
- ev_daemon_start_killtimer (ev_daemon);
-
- dbus_g_method_return (method);
-
- return TRUE;
-}
+ ev_daemon_stop_killtimer ();
+ if (ev_daemon_docs != NULL)
+ return;
-static void
-do_exit (GMainLoop *loop,
- GObject *object)
-{
- if (g_main_loop_is_running (loop))
- g_main_loop_quit (loop);
+ kill_timer_id = g_timeout_add_seconds (DAEMON_TIMEOUT,
+ (GSourceFunc) ev_daemon_shutdown,
+ data);
}
static gboolean
g_free (metadata);
}
+static void
+name_appeared_cb (GDBusConnection *connection,
+ const gchar *name,
+ const gchar *name_owner,
+ gpointer user_data)
+{
+}
+
+static void
+name_vanished_cb (GDBusConnection *connection,
+ const gchar *name,
+ gpointer user_data)
+{
+ GList *l;
+
+ for (l = ev_daemon_docs; l != NULL; l = l->next) {
+ EvDoc *doc = (EvDoc *) l->data;
+
+ if (strcmp (doc->dbus_name, name) != 0)
+ continue;
+
+ ev_daemon_docs = g_list_delete_link (ev_daemon_docs, l);
+ ev_doc_free (doc);
+
+ ev_daemon_maybe_start_killtimer (user_data);
+ return;
+ }
+}
+
+static void
+method_call_cb (GDBusConnection *connection,
+ const gchar *sender,
+ const gchar *object_path,
+ const gchar *interface_name,
+ const gchar *method_name,
+ GVariant *parameters,
+ GDBusMethodInvocation *invocation,
+ gpointer user_data)
+{
+ if (g_strcmp0 (interface_name, EV_DBUS_DAEMON_INTERFACE_NAME) != 0)
+ return;
+
+ if (g_strcmp0 (method_name, "RegisterDocument") == 0) {
+ EvDoc *doc;
+ const gchar *uri;
+ const gchar *owner = NULL;
+
+ g_variant_get (parameters, "(&s)", &uri);
+
+ doc = ev_daemon_find_doc (uri);
+ if (doc) {
+ /* Already registered */
+ owner = doc->dbus_name;
+ } else {
+ ev_daemon_stop_killtimer ();
+
+ doc = g_new (EvDoc, 1);
+ doc->dbus_name = g_strdup (sender);
+ doc->uri = g_strdup (uri);
+
+ doc->watch_id = g_bus_watch_name (G_BUS_TYPE_STARTER,
+ sender,
+ G_BUS_NAME_WATCHER_FLAGS_NONE,
+ name_appeared_cb,
+ name_vanished_cb,
+ user_data, NULL);
+
+ ev_daemon_docs = g_list_prepend (ev_daemon_docs, doc);
+ }
+
+ g_dbus_method_invocation_return_value (invocation,
+ g_variant_new_string (owner));
+ return;
+
+ } else if (g_strcmp0 (method_name, "UnregisterDocument") == 0) {
+ EvDoc *doc;
+ const gchar *uri;
+
+ g_variant_get (parameters, "(&s)", &uri);
+
+ doc = ev_daemon_find_doc (uri);
+ if (doc == NULL) {
+ g_dbus_method_invocation_return_error_literal (invocation,
+ G_DBUS_ERROR,
+ G_DBUS_ERROR_INVALID_ARGS,
+ "URI not registered");
+ return;
+ }
+
+ if (strcmp (doc->dbus_name, sender) != 0) {
+ g_dbus_method_invocation_return_error_literal (invocation,
+ G_DBUS_ERROR,
+ G_DBUS_ERROR_BAD_ADDRESS,
+ "Only owner can call this method");
+ return;
+ }
+
+ ev_daemon_docs = g_list_remove (ev_daemon_docs, doc);
+ ev_doc_free (doc);
+ ev_daemon_maybe_start_killtimer (user_data);
+
+ g_dbus_method_invocation_return_value (invocation, g_variant_new ("()"));
+ return;
+ }
+}
+
+static void
+name_acquired_cb (GDBusConnection *connection,
+ const gchar *name,
+ gpointer user_data)
+{
+ ev_migrate_metadata ();
+
+ ev_daemon_maybe_start_killtimer (user_data);
+}
+
+static void
+name_lost_cb (GDBusConnection *connection,
+ const gchar *name,
+ gpointer user_data)
+{
+ GMainLoop *loop = (GMainLoop *) user_data;
+
+ /* Failed to acquire the name; exit daemon */
+ if (g_main_loop_is_running (loop))
+ g_main_loop_quit (loop);
+}
+
+static const char introspection_xml[] =
+ "<node>"
+ "<interface name='org.gnome.evince.Daemon'>"
+ "<method name='RegisterDocument'>"
+ "<arg type='s' name='uri' direction='in'/>"
+ "<arg type='s' name='owner' direction='out'/>"
+ "</method>"
+ "<method name='UnregisterDocument'>"
+ "<arg type='s' name='uri' direction='in'/>"
+ "</method>"
+ "</interface>"
+ "</node>";
+
+static const GDBusInterfaceVTable interface_vtable = {
+ method_call_cb,
+ NULL,
+ NULL
+};
+
gint
main (gint argc, gchar **argv)
{
+ GDBusConnection *connection;
GMainLoop *loop;
-
- /* Init glib threads asap */
- if (!g_thread_supported ())
- g_thread_init (NULL);
+ GError *error = NULL;
+ guint registration_id, owner_id;
+ GDBusNodeInfo *introspection_data;
g_type_init ();
- if (!ev_daemon_get ())
- return 1;
+ connection = g_bus_get_sync (G_BUS_TYPE_STARTER, NULL, &error);
+ if (connection == NULL) {
+ g_printerr ("Failed to get bus connection: %s\n", error->message);
+ g_error_free (error);
+ return 1;
+ }
- ev_migrate_metadata ();
+ introspection_data = g_dbus_node_info_new_for_xml (introspection_xml, NULL);
+ g_assert (introspection_data != NULL);
loop = g_main_loop_new (NULL, FALSE);
- g_object_weak_ref (G_OBJECT (ev_daemon),
- (GWeakNotify) do_exit,
- loop);
- g_main_loop_run (loop);
- g_main_loop_unref (loop);
+
+ registration_id = g_dbus_connection_register_object (connection,
+ EV_DBUS_DAEMON_OBJECT_PATH,
+ EV_DBUS_DAEMON_NAME,
+ introspection_data->interfaces[0],
+ &interface_vtable,
+ g_main_loop_ref (loop),
+ (GDestroyNotify) g_main_loop_unref,
+ &error);
+ if (registration_id == 0) {
+ g_printerr ("Failed to register object: %s\n", error->message);
+ g_error_free (error);
+ g_object_unref (connection);
+ return 1;
+ }
+
+ owner_id = g_bus_own_name_on_connection (connection,
+ EV_DBUS_DAEMON_NAME,
+ G_BUS_NAME_OWNER_FLAGS_NONE,
+ name_acquired_cb,
+ name_lost_cb,
+ g_main_loop_ref (loop),
+ (GDestroyNotify) g_main_loop_unref);
+
+ g_main_loop_run (loop);
+
+ g_bus_unown_name (owner_id);
+
+ g_main_loop_unref (loop);
+ g_dbus_node_info_unref (introspection_data);
+ g_list_foreach (ev_daemon_docs, (GFunc)ev_doc_free, NULL);
+ g_list_free (ev_daemon_docs);
return 0;
}
https://www.fi.muni.cz/~kas/git / evince.git / commitdiff