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/*
* Copyright (C) 2021 Collabora Ltd
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <glib.h>
#include <glib-unix.h>
#include <systemd/sd-bus.h>
#include <systemd/sd-event.h>
#include "app_launcher.h"
#include "applaunch-dbus.h"
#define APPLAUNCH_DBUS_NAME "org.automotivelinux.AppLaunch"
#define APPLAUNCH_DBUS_PATH "/org/automotivelinux/AppLaunch"
/* TODO: see if it makes sense to move systemd event handling specifics
and interacting with GLib main loop into systemd_manager.c */
typedef struct SDEventSource {
GSource source;
GPollFD pollfd;
sd_event *event;
sd_bus *bus;
} SDEventSource;
GMainLoop *main_loop = NULL;
static gboolean quit_cb(gpointer user_data)
{
g_info("Quitting...");
if (main_loop)
g_idle_add(G_SOURCE_FUNC(g_main_loop_quit), main_loop);
else
exit(0);
return G_SOURCE_REMOVE;
}
static void bus_acquired_cb(GDBusConnection *connection, const gchar *name,
gpointer user_data)
{
AppLauncher *launcher = user_data;
g_debug("Bus acquired, starting service...");
g_dbus_interface_skeleton_export(G_DBUS_INTERFACE_SKELETON(launcher),
connection, APPLAUNCH_DBUS_PATH, NULL);
}
static void name_acquired_cb(GDBusConnection *connection, const gchar *name,
gpointer user_data)
{
g_debug("D-Bus name '%s' was acquired", name);
}
static void name_lost_cb(GDBusConnection *connection, const gchar *name,
gpointer user_data)
{
g_critical("Lost the '%s' service name, quitting...", name);
g_main_loop_quit(main_loop);
}
static gboolean event_prepare(GSource *source, gint *timeout_) {
return sd_event_prepare(((SDEventSource *)source)->event) > 0;
}
static gboolean event_check(GSource *source) {
return sd_event_wait(((SDEventSource *)source)->event, 0) > 0;
}
static gboolean event_dispatch(GSource *source, GSourceFunc callback, gpointer user_data) {
return sd_event_dispatch(((SDEventSource *)source)->event) > 0;
}
static void event_finalize(GSource *source) {
sd_event_unref(((SDEventSource *)source)->event);
}
static GSourceFuncs event_funcs = {
.prepare = event_prepare,
.check = event_check,
.dispatch = event_dispatch,
.finalize = event_finalize,
};
GSource *g_sd_event_create_source(sd_event *event, sd_bus *bus)
{
SDEventSource *source;
source = (SDEventSource *)g_source_new(&event_funcs, sizeof(SDEventSource));
source->event = sd_event_ref(event);
source->bus = sd_bus_ref(bus);
source->pollfd.fd = sd_bus_get_fd(bus);
source->pollfd.events = sd_bus_get_events(bus);
g_source_add_poll((GSource *)source, &source->pollfd);
return (GSource *)source;
}
int main(int argc, char *argv[])
{
g_unix_signal_add(SIGTERM, quit_cb, NULL);
g_unix_signal_add(SIGINT, quit_cb, NULL);
main_loop = g_main_loop_new(NULL, FALSE);
AppLauncher *launcher = app_launcher_get_default();
gint owner_id = g_bus_own_name(G_BUS_TYPE_SESSION, APPLAUNCH_DBUS_NAME,
G_BUS_NAME_OWNER_FLAGS_NONE, bus_acquired_cb,
name_acquired_cb, name_lost_cb,
launcher, NULL);
g_main_loop_run(main_loop);
g_main_loop_unref(main_loop);
g_object_unref(launcher);
g_bus_unown_name (owner_id);
return 0;
}
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