4 #include <dbus/dbus-glib.h>
5 #include <dbus/dbus-glib-lowlevel.h>
6 #include <hal/libhal.h>
8 #include <mce/dbus-names.h>
9 #include <mce/mode-names.h>
11 #define HAL_COND_BUTTONPRESSED "ButtonPressed"
12 #define HAL_BUTTON_POWER "power"
13 #define HAL_INPUTDEV_PATH "/org/freedesktop/Hal/devices/computer_logicaldev_input"
23 static void sig_tklock_mode(DBusGProxy *proxy, const char *mode, gpointer user_data)
25 struct app_data *app = user_data;
26 g_debug("sig_tklock_mode [%s]", mode);
27 app->mode_locked = !strcmp(mode, MCE_TK_LOCKED);
30 static void sig_display_status(DBusGProxy *proxy, const char *status, gpointer user_data)
32 struct app_data *app = user_data;
33 g_debug("sig_display_status [%s]", status);
34 app->display_on = !strcmp(status, MCE_DISPLAY_ON_STRING);
37 static void debug_log(const gchar *log_domain,
38 GLogLevelFlags log_level, const gchar *message, gpointer unused_data)
40 g_print("# %s\n", message);
43 static void power_button(struct app_data *app)
45 g_debug("power button");
46 if (app->mode_locked && app->display_on) {
47 int res = system("espeaktime-now.sh");
48 g_debug("speak script: %d", res);
53 * Call a method with no input arguments and one string output argument.
54 * Return the allocaed result string on success, NULL on failure.
56 static char *mce_call_getstr(DBusGProxy *proxy, const char *method)
61 if (dbus_g_proxy_call(proxy, method, &err,
63 G_TYPE_STRING, &s, G_TYPE_INVALID))
66 g_error("Couldn't call MCE (%s): %s\n", method, err->message);
71 static gboolean prefill_status(struct app_data *app)
76 mce_req = dbus_g_proxy_new_for_name(app->bus, MCE_SERVICE, MCE_REQUEST_PATH, MCE_REQUEST_IF);
79 mode = mce_call_getstr(mce_req, MCE_TKLOCK_MODE_GET);
80 status = mce_call_getstr(mce_req, MCE_DISPLAY_STATUS_GET);
82 sig_tklock_mode(NULL, mode, app);
84 sig_display_status(NULL, status, app);
87 g_object_unref(mce_req);
89 return mode && status;
92 static void connect_signals(struct app_data *app)
96 mce_sig = dbus_g_proxy_new_for_name(app->bus, MCE_SERVICE, MCE_SIGNAL_PATH, MCE_SIGNAL_IF);
98 dbus_g_proxy_add_signal(mce_sig, MCE_TKLOCK_MODE_SIG, G_TYPE_STRING, G_TYPE_INVALID);
99 dbus_g_proxy_add_signal(mce_sig, MCE_DISPLAY_SIG, G_TYPE_STRING, G_TYPE_INVALID);
100 dbus_g_proxy_connect_signal(mce_sig, MCE_TKLOCK_MODE_SIG, G_CALLBACK(sig_tklock_mode), app, NULL);
101 dbus_g_proxy_connect_signal(mce_sig, MCE_DISPLAY_SIG, G_CALLBACK(sig_display_status), app, NULL);
105 static void device_condition(LibHalContext *ctx,
107 const char *condition_name,
108 const char *condition_detail)
110 g_debug("device_condition: name [%s] detail [%s]",
111 condition_name, condition_detail);
112 if (!strcmp(condition_name, HAL_COND_BUTTONPRESSED) && !strcmp(condition_detail, HAL_BUTTON_POWER)) {
113 struct app_data *app = libhal_ctx_get_user_data(ctx);
119 static gboolean init_hal(struct app_data *app)
123 app->hal = libhal_ctx_new();
125 g_error("Couldn't get a HAL context");
128 libhal_ctx_set_dbus_connection(app->hal,
129 dbus_g_connection_get_connection(app->bus));
130 libhal_ctx_set_device_condition(app->hal, device_condition);
131 libhal_ctx_set_user_data(app->hal, app);
133 dbus_error_init(&err);
134 if (!libhal_ctx_init(app->hal, &err)) {
135 g_error("Couldn't initialize HAL context: %s", err.message);
136 dbus_error_free(&err);
137 libhal_ctx_free(app->hal);
141 if (!libhal_device_add_property_watch(app->hal, HAL_INPUTDEV_PATH, &err)) {
142 g_error("Couldn't add HAL watch: %s", err.message);
143 dbus_error_free(&err);
144 libhal_ctx_free(app->hal);
149 int main(int argc, char *argv[])
155 if (argc > 1 && !strcmp(argv[1], "-v"))
156 g_log_set_handler(G_LOG_DOMAIN, G_LOG_LEVEL_DEBUG, debug_log, NULL);
159 memset(&app, 0, sizeof(app));
162 loop = g_main_loop_new(NULL, FALSE);
164 app.bus = dbus_g_bus_get(DBUS_BUS_SYSTEM, &err);
166 g_error("Couldn't get DBUS connection: %s\n", err->message);
174 if (!prefill_status(&app))
176 connect_signals(&app);
179 g_main_loop_run(loop);
180 dbus_g_connection_unref(app.bus);