Add detection for Modem Manager running state

1 files changed, 70 insertions, 0 deletions

diff --git a/plugins/modemmgr.c b/plugins/modemmgr.c
index 9a226845..cbb5ebd5 100644
--- a/plugins/modemmgr.c
+++ b/plugins/modemmgr.c
@@ -23,17 +23,87 @@
 #include <config.h>
 #endif
 
+#include <errno.h>
+
+#include <gdbus.h>
+
 #define CONNMAN_API_SUBJECT_TO_CHANGE
 #include <connman/plugin.h>
+#include <connman/dbus.h>
 #include <connman/log.h>
 
+#define MODEMMGR_SERVICE	"org.freedesktop.ModemManager"
+#define MODEMMGR_INTERFACE	MODEMMGR_SERVICE
+
+#define ENUMERATE_DEVICES	"EnumerateDevices"
+
+#define TIMEOUT 5000
+
+static void enumerate_devices_reply(DBusPendingCall *call, void *user_data)
+{
+	DBusMessage *reply;
+
+	DBG("");
+
+	reply = dbus_pending_call_steal_reply(call);
+
+	dbus_message_unref(reply);
+}
+
+static void modemmgr_connect(DBusConnection *connection, void *user_data)
+{
+	DBusMessage *message;
+	DBusPendingCall *call;
+
+	DBG("connection %p", connection);
+
+	message = dbus_message_new_method_call(MODEMMGR_SERVICE, "/",
+				MODEMMGR_INTERFACE, ENUMERATE_DEVICES);
+	if (message == NULL)
+		return;
+
+	if (dbus_connection_send_with_reply(connection, message,
+						&call, TIMEOUT) == FALSE) {
+		connman_error("Failed to get modem devices");
+		dbus_message_unref(message);
+		return;
+	}
+
+	dbus_pending_call_set_notify(call, enumerate_devices_reply,
+							NULL, NULL);
+
+	dbus_message_unref(message);
+}
+
+static void modemmgr_disconnect(DBusConnection *connection, void *user_data)
+{
+	DBG("connection %p", connection);
+}
+
+static DBusConnection *connection;
+static guint watch;
+
 static int modemmgr_init(void)
 {
+	connection = connman_dbus_get_connection();
+	if (connection == NULL)
+		return -EIO;
+
+	watch = g_dbus_add_service_watch(connection, MODEMMGR_SERVICE,
+			modemmgr_connect, modemmgr_disconnect, NULL, NULL);
+	if (watch == 0) {
+		dbus_connection_unref(connection);
+		return -EIO;
+	}
+
 	return 0;
 }
 
 static void modemmgr_exit(void)
 {
+	g_dbus_remove_watch(connection, watch);
+
+	dbus_connection_unref(connection);
 }
 
 CONNMAN_PLUGIN_DEFINE(modemmgr, "Modem Manager plugin", VERSION,