[PATCH 08/17] bluetooth: Track oFono service

[luiz.dentz@xxxxxxxxx (Luiz Augusto von Dentz)]

From: Jo?o Paulo Rechi Vita <jprvita@xxxxxxxxxxxxx>

---
 src/modules/bluetooth/backend-ofono.c | 36 +++++++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)

diff --git a/src/modules/bluetooth/backend-ofono.c b/src/modules/bluetooth/backend-ofono.c
index f9157e3..404a6b5 100644
--- a/src/modules/bluetooth/backend-ofono.c
+++ b/src/modules/bluetooth/backend-ofono.c
@@ -384,6 +384,7 @@ static void hf_audio_agent_unregister(pa_bluetooth_backend *backend) {
 
 static DBusHandlerResult filter_cb(DBusConnection *bus, DBusMessage *m, void *data) {
     const char *sender;
+    DBusError err;
     pa_bluetooth_backend *backend = data;
 
     pa_assert(bus);
@@ -394,6 +395,41 @@ static DBusHandlerResult filter_cb(DBusConnection *bus, DBusMessage *m, void *da
     if (!pa_safe_streq(backend->ofono_bus_id, sender) && !pa_streq("org.freedesktop.DBus", sender))
         return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
 
+    dbus_error_init(&err);
+
+    if (dbus_message_is_signal(m, "org.freedesktop.DBus", "NameOwnerChanged")) {
+        const char *name, *old_owner, *new_owner;
+
+        if (!dbus_message_get_args(m, &err,
+                                   DBUS_TYPE_STRING, &name,
+                                   DBUS_TYPE_STRING, &old_owner,
+                                   DBUS_TYPE_STRING, &new_owner,
+                                   DBUS_TYPE_INVALID)) {
+            pa_log_error("Failed to parse org.freedesktop.DBus.NameOwnerChanged: %s", err.message);
+            goto fail;
+        }
+
+        if (pa_streq(name, OFONO_SERVICE)) {
+
+            if (old_owner && *old_owner) {
+                pa_log_debug("oFono disappeared");
+
+                pa_hashmap_remove_all(backend->cards);
+
+                pa_xfree(backend->ofono_bus_id);
+                backend->ofono_bus_id = NULL;
+            }
+
+            if (new_owner && *new_owner) {
+                pa_log_debug("oFono appeared");
+                hf_audio_agent_register(backend);
+            }
+        }
+
+    }
+
+fail:
+    dbus_error_free(&err);
     return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
 }
 
-- 
1.9.3