Revamp server-client API.
This commit is contained in:
Daiki Ueno
471
eekboard/eekboard-service.c
Normal file
471
eekboard/eekboard-service.c
Normal file
@ -0,0 +1,471 @@
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/*
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* Copyright (C) 2010-2011 Daiki Ueno <ueno@unixuser.org>
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* Copyright (C) 2010-2011 Red Hat, Inc.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif /* HAVE_CONFIG_H */
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#include "eekboard/eekboard-service.h"
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enum {
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PROP_0,
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PROP_OBJECT_PATH,
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PROP_CONNECTION,
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PROP_LAST
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};
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enum {
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DESTROYED,
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LAST_SIGNAL
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};
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static guint signals[LAST_SIGNAL] = { 0, };
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#define EEKBOARD_SERVICE_GET_PRIVATE(obj) \
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(G_TYPE_INSTANCE_GET_PRIVATE ((obj), EEKBOARD_TYPE_SERVICE, EekboardServicePrivate))
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struct _EekboardServicePrivate {
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GDBusConnection *connection;
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GDBusNodeInfo *introspection_data;
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guint registration_id;
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char *object_path;
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GHashTable *context_hash;
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GSList *context_stack;
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};
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G_DEFINE_TYPE (EekboardService, eekboard_service, G_TYPE_OBJECT);
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static const gchar introspection_xml[] =
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"<node>"
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" <interface name='org.fedorahosted.Eekboard'>"
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" <method name='CreateContext'>"
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" <arg direction='in' type='s' name='client_name'/>"
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" <arg direction='out' type='s' name='object_path'/>"
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" </method>"
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" <method name='PushContext'>"
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" <arg direction='in' type='s' name='object_path'/>"
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" </method>"
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" <method name='PopContext'/>"
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" <method name='DestroyContext'>"
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" <arg direction='in' type='s' name='object_path'/>"
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" </method>"
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" <method name='Destroy'/>"
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/* signals */
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" </interface>"
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"</node>";
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static void handle_method_call (GDBusConnection *connection,
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const gchar *sender,
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const gchar *object_path,
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const gchar *interface_name,
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const gchar *method_name,
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GVariant *parameters,
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GDBusMethodInvocation *invocation,
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gpointer user_data);
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static const GDBusInterfaceVTable interface_vtable =
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{
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handle_method_call,
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NULL,
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NULL
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};
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static void
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eekboard_service_set_property (GObject *object,
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guint prop_id,
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const GValue *value,
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GParamSpec *pspec)
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{
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EekboardService *service = EEKBOARD_SERVICE(object);
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EekboardServicePrivate *priv = EEKBOARD_SERVICE_GET_PRIVATE(service);
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GDBusConnection *connection;
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switch (prop_id) {
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case PROP_OBJECT_PATH:
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if (priv->object_path)
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g_free (priv->object_path);
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priv->object_path = g_strdup (g_value_get_string (value));
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break;
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case PROP_CONNECTION:
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connection = g_value_get_object (value);
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if (priv->connection)
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g_object_unref (priv->connection);
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priv->connection = g_object_ref (connection);
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break;
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default:
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g_object_set_property (object,
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g_param_spec_get_name (pspec),
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value);
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break;
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}
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}
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static void
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eekboard_service_get_property (GObject *object,
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guint prop_id,
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GValue *value,
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GParamSpec *pspec)
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{
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EekboardService *service = EEKBOARD_SERVICE(object);
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EekboardServicePrivate *priv = EEKBOARD_SERVICE_GET_PRIVATE(service);
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switch (prop_id) {
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case PROP_OBJECT_PATH:
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g_value_set_string (value, priv->object_path);
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break;
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case PROP_CONNECTION:
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g_value_set_object (value, priv->connection);
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break;
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default:
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g_object_set_property (object,
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g_param_spec_get_name (pspec),
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value);
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break;
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}
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}
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static void
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eekboard_service_dispose (GObject *object)
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{
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EekboardService *service = EEKBOARD_SERVICE(object);
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EekboardServicePrivate *priv = EEKBOARD_SERVICE_GET_PRIVATE(service);
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GSList *head;
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if (priv->context_hash) {
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g_hash_table_destroy (priv->context_hash);
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priv->context_hash = NULL;
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}
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for (head = priv->context_stack; head; head = priv->context_stack) {
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g_object_unref (head->data);
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priv->context_stack = g_slist_next (head);
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g_slist_free1 (head);
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}
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if (priv->connection) {
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if (priv->registration_id > 0) {
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g_dbus_connection_unregister_object (priv->connection,
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priv->registration_id);
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priv->registration_id = 0;
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}
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g_object_unref (priv->connection);
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priv->connection = NULL;
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}
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if (priv->introspection_data) {
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g_dbus_node_info_unref (priv->introspection_data);
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priv->introspection_data = NULL;
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}
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G_OBJECT_CLASS (eekboard_service_parent_class)->dispose (object);
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}
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static void
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eekboard_service_finalize (GObject *object)
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{
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EekboardServicePrivate *priv = EEKBOARD_SERVICE_GET_PRIVATE(object);
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g_free (priv->object_path);
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G_OBJECT_CLASS (eekboard_service_parent_class)->finalize (object);
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}
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static void
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eekboard_service_constructed (GObject *object)
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{
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EekboardServicePrivate *priv = EEKBOARD_SERVICE_GET_PRIVATE(object);
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if (priv->connection && priv->object_path) {
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GError *error = NULL;
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priv->registration_id = g_dbus_connection_register_object
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(priv->connection,
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priv->object_path,
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priv->introspection_data->interfaces[0],
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&interface_vtable,
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object,
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NULL,
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&error);
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}
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}
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static void
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eekboard_service_class_init (EekboardServiceClass *klass)
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{
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GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
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GParamSpec *pspec;
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g_type_class_add_private (gobject_class,
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sizeof (EekboardServicePrivate));
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klass->create_context = NULL;
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gobject_class->constructed = eekboard_service_constructed;
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gobject_class->set_property = eekboard_service_set_property;
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gobject_class->get_property = eekboard_service_get_property;
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gobject_class->dispose = eekboard_service_dispose;
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gobject_class->finalize = eekboard_service_finalize;
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signals[DESTROYED] =
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g_signal_new (I_("destroyed"),
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G_TYPE_FROM_CLASS(gobject_class),
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G_SIGNAL_RUN_LAST,
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0,
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NULL,
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NULL,
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g_cclosure_marshal_VOID__VOID,
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G_TYPE_NONE,
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0);
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pspec = g_param_spec_string ("object-path",
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"Object-path",
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"Object-path",
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NULL,
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G_PARAM_CONSTRUCT | G_PARAM_READWRITE);
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g_object_class_install_property (gobject_class,
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PROP_OBJECT_PATH,
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pspec);
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pspec = g_param_spec_object ("connection",
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"Connection",
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"Connection",
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G_TYPE_DBUS_CONNECTION,
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G_PARAM_CONSTRUCT | G_PARAM_READWRITE);
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g_object_class_install_property (gobject_class,
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PROP_CONNECTION,
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pspec);
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}
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static void
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eekboard_service_init (EekboardService *service)
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{
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EekboardServicePrivate *priv;
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GError *error;
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priv = service->priv = EEKBOARD_SERVICE_GET_PRIVATE(service);
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error = NULL;
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priv->introspection_data =
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g_dbus_node_info_new_for_xml (introspection_xml, &error);
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g_assert (priv->introspection_data != NULL);
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priv->context_hash =
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g_hash_table_new_full (g_str_hash,
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g_str_equal,
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(GDestroyNotify)g_free,
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(GDestroyNotify)g_object_unref);
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}
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static void
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remove_context_from_stack (EekboardService *service,
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EekboardContextService *context)
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{
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EekboardServicePrivate *priv = EEKBOARD_SERVICE_GET_PRIVATE(service);
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GSList *head;
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head = g_slist_find (priv->context_stack, context);
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if (head) {
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priv->context_stack = g_slist_remove_link (priv->context_stack, head);
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g_object_unref (head->data);
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g_slist_free1 (head);
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}
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if (priv->context_stack)
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eekboard_context_service_enable (priv->context_stack->data);
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}
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static void
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service_name_vanished_callback (GDBusConnection *connection,
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const gchar *name,
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gpointer user_data)
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{
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EekboardService *service = user_data;
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EekboardServicePrivate *priv = EEKBOARD_SERVICE_GET_PRIVATE(service);
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GSList *head;
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GHashTableIter iter;
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gpointer k, v;
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g_hash_table_iter_init (&iter, priv->context_hash);
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while (g_hash_table_iter_next (&iter, &k, &v)) {
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const gchar *owner = g_object_get_data (G_OBJECT(v), "owner");
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if (g_strcmp0 (owner, name) == 0)
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g_hash_table_iter_remove (&iter);
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}
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for (head = priv->context_stack; head; ) {
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const gchar *owner = g_object_get_data (G_OBJECT(head->data), "owner");
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GSList *next = g_slist_next (head);
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if (g_strcmp0 (owner, name) == 0) {
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priv->context_stack =
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g_slist_remove_link (priv->context_stack, head);
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g_object_unref (head->data);
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g_slist_free1 (head);
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}
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head = next;
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}
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if (priv->context_stack)
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eekboard_context_service_enable (priv->context_stack->data);
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}
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static void
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handle_method_call (GDBusConnection *connection,
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const gchar *sender,
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const gchar *object_path,
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const gchar *interface_name,
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const gchar *method_name,
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GVariant *parameters,
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GDBusMethodInvocation *invocation,
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gpointer user_data)
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{
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EekboardService *service = user_data;
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EekboardServicePrivate *priv = EEKBOARD_SERVICE_GET_PRIVATE(service);
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EekboardServiceClass *klass = EEKBOARD_SERVICE_GET_CLASS(service);
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if (g_strcmp0 (method_name, "CreateContext") == 0) {
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const gchar *client_name;
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gchar *object_path;
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static gint context_id = 0;
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EekboardContextService *context;
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g_variant_get (parameters, "(&s)", &client_name);
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object_path = g_strdup_printf (EEKBOARD_CONTEXT_SERVICE_PATH, context_id++);
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g_assert (klass->create_context);
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context = klass->create_context (service, client_name, object_path);
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g_object_set_data (G_OBJECT(context), "owner", g_strdup (sender));
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g_hash_table_insert (priv->context_hash,
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object_path,
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context);
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/* the vanished callback is called when clients are disconnected */
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g_bus_watch_name_on_connection (priv->connection,
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sender,
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G_BUS_NAME_WATCHER_FLAGS_NONE,
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NULL,
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service_name_vanished_callback,
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service,
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NULL);
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g_dbus_method_invocation_return_value (invocation,
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g_variant_new ("(s)",
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object_path));
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return;
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}
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if (g_strcmp0 (method_name, "PushContext") == 0) {
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const gchar *object_path;
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EekboardContextService *context;
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g_variant_get (parameters, "(&s)", &object_path);
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context = g_hash_table_lookup (priv->context_hash, object_path);
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if (!context) {
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g_dbus_method_invocation_return_error (invocation,
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G_IO_ERROR,
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G_IO_ERROR_FAILED_HANDLED,
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"context not found");
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return;
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}
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if (priv->context_stack)
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eekboard_context_service_disable (priv->context_stack->data);
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priv->context_stack = g_slist_prepend (priv->context_stack,
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g_object_ref (context));
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eekboard_context_service_enable (context);
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g_dbus_method_invocation_return_value (invocation, NULL);
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return;
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}
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if (g_strcmp0 (method_name, "PopContext") == 0) {
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if (priv->context_stack) {
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EekboardContextService *context = priv->context_stack->data;
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gchar *object_path;
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const gchar *owner;
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g_object_get (G_OBJECT(context), "object-path", &object_path, NULL);
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owner = g_object_get_data (G_OBJECT(context), "owner");
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if (g_strcmp0 (owner, sender) != 0) {
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g_dbus_method_invocation_return_error
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(invocation,
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G_IO_ERROR,
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G_IO_ERROR_FAILED_HANDLED,
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"context at %s not owned by %s",
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object_path, sender);
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return;
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}
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g_free (object_path);
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eekboard_context_service_disable (context);
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priv->context_stack = g_slist_next (priv->context_stack);
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if (priv->context_stack)
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eekboard_context_service_enable (priv->context_stack->data);
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}
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g_dbus_method_invocation_return_value (invocation, NULL);
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return;
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}
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if (g_strcmp0 (method_name, "DestroyContext") == 0) {
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EekboardContextService *context;
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const gchar *object_path;
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const gchar *owner;
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g_variant_get (parameters, "(&s)", &object_path);
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context = g_hash_table_lookup (priv->context_hash, object_path);
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if (!context) {
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g_dbus_method_invocation_return_error (invocation,
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G_IO_ERROR,
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G_IO_ERROR_FAILED_HANDLED,
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"context not found");
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return;
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}
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owner = g_object_get_data (G_OBJECT(context), "owner");
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if (g_strcmp0 (owner, sender) != 0) {
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g_dbus_method_invocation_return_error
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(invocation,
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G_IO_ERROR,
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G_IO_ERROR_FAILED_HANDLED,
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"the context at %s not owned by %s",
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object_path, sender);
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return;
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}
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remove_context_from_stack (service, context);
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g_hash_table_remove (priv->context_hash, object_path);
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g_dbus_method_invocation_return_value (invocation, NULL);
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return;
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}
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if (g_strcmp0 (method_name, "Destroy") == 0) {
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g_signal_emit_by_name (service, "destroyed", NULL);
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g_dbus_method_invocation_return_value (invocation, NULL);
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return;
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}
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g_return_if_reached ();
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}
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EekboardService *
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eekboard_service_new (const gchar *object_path,
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GDBusConnection *connection)
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{
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return g_object_new (EEKBOARD_TYPE_SERVICE,
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"object-path", object_path,
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"connection", connection,
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NULL);
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}
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