dbus: remove filter functions only if they were actually set before

This fixes an assert when destructing modules that have not been fully
initialized.

https://bugzilla.redhat.com/show_bug.cgi?id=548525

src/modules/bluetooth/bluetooth-util.c

@@ -37,6 +37,7 @@ struct pa_bluetooth_discovery {
     PA_LLIST_HEAD(pa_dbus_pending, pending);
     pa_hashmap *devices;
     pa_hook hook;
+    pa_bool_t filter_added;
 };
 
 static void get_properties_reply(DBusPendingCall *pending, void *userdata);
@@ -788,6 +789,7 @@ pa_bluetooth_discovery* pa_bluetooth_discovery_get(pa_core *c) {
         pa_log_error("Failed to add filter function");
         goto fail;
     }
+    y->filter_added = TRUE;
 
     if (pa_dbus_add_matches(
                 pa_dbus_connection_get(y->connection), &err,
@@ -856,7 +858,8 @@ void pa_bluetooth_discovery_unref(pa_bluetooth_discovery *y) {
                                "type='signal',sender='org.bluez',interface='org.bluez.AudioSink',member='PropertyChanged'",
                                "type='signal',sender='org.bluez',interface='org.bluez.AudioSource',member='PropertyChanged'", NULL);
 
-        dbus_connection_remove_filter(pa_dbus_connection_get(y->connection), filter_cb, y);
+        if (y->filter_added)
+            dbus_connection_remove_filter(pa_dbus_connection_get(y->connection), filter_cb, y);
 
         pa_dbus_connection_unref(y->connection);
     }

src/modules/bluetooth/module-bluetooth-device.c

@@ -179,6 +179,8 @@ struct userdata {
 
     int stream_write_type;
     int service_write_type, service_read_type;
+
+    pa_bool_t filter_added;
 };
 
 #define FIXED_LATENCY_PLAYBACK_A2DP (25*PA_USEC_PER_MSEC)
@@ -2405,6 +2407,7 @@ int pa__init(pa_module* m) {
         pa_log_error("Failed to add filter function");
         goto fail;
     }
+    u->filter_added = TRUE;
 
     speaker = pa_sprintf_malloc("type='signal',sender='org.bluez',interface='org.bluez.Headset',member='SpeakerGainChanged',path='%s'", u->path);
     mike = pa_sprintf_malloc("type='signal',sender='org.bluez',interface='org.bluez.Headset',member='MicrophoneGainChanged',path='%s'", u->path);
@@ -2494,7 +2497,9 @@ void pa__done(pa_module *m) {
             pa_xfree(mike);
         }
 
-        dbus_connection_remove_filter(pa_dbus_connection_get(u->connection), filter_cb, u);
+        if (u->filter_added)
+            dbus_connection_remove_filter(pa_dbus_connection_get(u->connection), filter_cb, u);
+
         pa_dbus_connection_unref(u->connection);
     }
 

src/modules/bluetooth/module-bluetooth-proximity.c

@@ -92,7 +92,8 @@ struct userdata {
     unsigned n_found;
     unsigned n_unknown;
 
-    pa_bool_t muted;
+    pa_bool_t muted:1;
+    pa_bool_t filter_added:1;
 };
 
 static void update_volume(struct userdata *u) {
@@ -358,9 +359,10 @@ static int add_matches(struct userdata *u, pa_bool_t add) {
     } else
         dbus_bus_remove_match(pa_dbus_connection_get(u->dbus_connection), filter2, &e);
 
-    if (add)
+    if (add) {
         pa_assert_se(dbus_connection_add_filter(pa_dbus_connection_get(u->dbus_connection), filter_func, u, NULL));
-    else
+        u->filter_added = TRUE;
+    } else if (u->filter_added)
         dbus_connection_remove_filter(pa_dbus_connection_get(u->dbus_connection), filter_func, u);
 
     r = 0;
@@ -393,9 +395,6 @@ int pa__init(pa_module*m) {
     u->sink_name = pa_xstrdup(pa_modargs_get_value(ma, "sink", NULL));
     u->hci = pa_xstrdup(pa_modargs_get_value(ma, "hci", DEFAULT_HCI));
     u->hci_path = pa_sprintf_malloc("/org/bluez/%s", u->hci);
-    u->n_found = u->n_unknown = 0;
-    u->muted = FALSE;
-
     u->bondings = pa_hashmap_new(pa_idxset_string_hash_func, pa_idxset_string_compare_func);
 
     if (!(u->dbus_connection = pa_dbus_bus_get(m->core, DBUS_BUS_SYSTEM, &e))) {

src/modules/module-console-kit.c

@@ -67,6 +67,7 @@ struct userdata {
     pa_core *core;
     pa_dbus_connection *connection;
     pa_hashmap *sessions;
+    pa_bool_t filter_added;
 };
 
 static void add_session(struct userdata *u, const char *id) {
@@ -300,7 +301,7 @@ int pa__init(pa_module*m) {
         goto fail;
     }
 
-    m->userdata = u = pa_xnew(struct userdata, 1);
+    m->userdata = u = pa_xnew0(struct userdata, 1);
     u->core = m->core;
     u->module = m;
     u->connection = connection;
@@ -311,6 +312,8 @@ int pa__init(pa_module*m) {
         goto fail;
     }
 
+    u->filter_added = TRUE;
+
     if (pa_dbus_add_matches(
                 pa_dbus_connection_get(connection), &error,
                 "type='signal',sender='org.freedesktop.ConsoleKit',interface='org.freedesktop.ConsoleKit.Seat',member='SessionAdded'",
@@ -359,7 +362,9 @@ void pa__done(pa_module *m) {
                 "type='signal',sender='org.freedesktop.ConsoleKit',interface='org.freedesktop.ConsoleKit.Seat',member='SessionAdded'",
                 "type='signal',sender='org.freedesktop.ConsoleKit',interface='org.freedesktop.ConsoleKit.Seat',member='SessionRemoved'", NULL);
 
-        dbus_connection_remove_filter(pa_dbus_connection_get(u->connection), filter_cb, u);
+        if (u->filter_added)
+            dbus_connection_remove_filter(pa_dbus_connection_get(u->connection), filter_cb, u);
+
         pa_dbus_connection_unref(u->connection);
     }
 

src/modules/module-hal-detect.c

@@ -87,6 +87,7 @@ struct userdata {
 #ifdef HAVE_OSS_OUTPUT
     pa_bool_t init_subdevs;
 #endif
+    pa_bool_t filter_added:1;
 };
 
 #define CAPABILITY_ALSA "alsa"
@@ -733,12 +734,9 @@ int pa__init(pa_module*m) {
         goto fail;
     }
 
-    m->userdata = u = pa_xnew(struct userdata, 1);
+    m->userdata = u = pa_xnew0(struct userdata, 1);
     u->core = m->core;
-    u->context = NULL;
-    u->connection = NULL;
     u->devices = pa_hashmap_new(pa_idxset_string_hash_func, pa_idxset_string_compare_func);
-    u->capability = NULL;
 
 #ifdef HAVE_ALSA
     u->use_tsched = TRUE;
@@ -800,6 +798,7 @@ int pa__init(pa_module*m) {
         pa_log_error("Failed to add filter function");
         goto fail;
     }
+    u->filter_added = TRUE;
 
     if (pa_dbus_add_matches(
                 pa_dbus_connection_get(u->connection), &error,
@@ -856,7 +855,8 @@ void pa__done(pa_module *m) {
                 "type='signal',sender='org.freedesktop.Hal',interface='org.freedesktop.Hal.Device.AccessControl',member='ACLRemoved'",
                 "type='signal',interface='org.pulseaudio.Server',member='DirtyGiveUpMessage'", NULL);
 
-        dbus_connection_remove_filter(pa_dbus_connection_get(u->connection), filter_cb, u);
+        if (u->filter_added)
+            dbus_connection_remove_filter(pa_dbus_connection_get(u->connection), filter_cb, u);
         pa_dbus_connection_unref(u->connection);
     }
 

src/pulse/context.c

@@ -145,7 +145,7 @@ pa_context *pa_context_new_with_proplist(pa_mainloop_api *mainloop, const char *
 
     pa_init_i18n();
 
-    c = pa_xnew(pa_context, 1);
+    c = pa_xnew0(pa_context, 1);
     PA_REFCNT_INIT(c);
 
     c->proplist = p ? pa_proplist_copy(p) : pa_proplist_new();
@@ -157,9 +157,6 @@ pa_context *pa_context_new_with_proplist(pa_mainloop_api *mainloop, const char *
     c->system_bus = c->session_bus = NULL;
 #endif
     c->mainloop = mainloop;
-    c->client = NULL;
-    c->pstream = NULL;
-    c->pdispatch = NULL;
     c->playback_streams = pa_hashmap_new(pa_idxset_trivial_hash_func, pa_idxset_trivial_compare_func);
     c->record_streams = pa_hashmap_new(pa_idxset_trivial_hash_func, pa_idxset_trivial_compare_func);
     c->client_index = PA_INVALID_INDEX;
@@ -170,22 +167,9 @@ pa_context *pa_context_new_with_proplist(pa_mainloop_api *mainloop, const char *
 
     c->error = PA_OK;
     c->state = PA_CONTEXT_UNCONNECTED;
-    c->ctag = 0;
-    c->csyncid = 0;
 
     reset_callbacks(c);
 
-    c->is_local = FALSE;
-    c->server_list = NULL;
-    c->server = NULL;
-
-    c->do_shm = FALSE;
-
-    c->server_specified = FALSE;
-    c->no_fail = FALSE;
-    c->do_autospawn = FALSE;
-    memset(&c->spawn_api, 0, sizeof(c->spawn_api));
-
 #ifndef MSG_NOSIGNAL
 #ifdef SIGPIPE
     pa_check_signal_is_blocked(SIGPIPE);
@@ -255,12 +239,14 @@ static void context_free(pa_context *c) {
 
 #ifdef HAVE_DBUS
     if (c->system_bus) {
-        dbus_connection_remove_filter(pa_dbus_wrap_connection_get(c->system_bus), filter_cb, c);
+        if (c->filter_added)
+            dbus_connection_remove_filter(pa_dbus_wrap_connection_get(c->system_bus), filter_cb, c);
         pa_dbus_wrap_connection_free(c->system_bus);
     }
 
     if (c->session_bus) {
-        dbus_connection_remove_filter(pa_dbus_wrap_connection_get(c->session_bus), filter_cb, c);
+        if (c->filter_added)
+            dbus_connection_remove_filter(pa_dbus_wrap_connection_get(c->session_bus), filter_cb, c);
         pa_dbus_wrap_connection_free(c->session_bus);
     }
 #endif
@@ -794,6 +780,7 @@ static void track_pulseaudio_on_dbus(pa_context *c, DBusBusType type, pa_dbus_wr
         pa_log_warn("Failed to add filter function");
         goto fail;
     }
+    c->filter_added = TRUE;
 
     if (pa_dbus_add_matches(
                 pa_dbus_wrap_connection_get(*conn), &error,

src/pulse/internal.h

@@ -90,6 +90,7 @@ struct pa_context {
     pa_bool_t no_fail:1;
     pa_bool_t do_autospawn:1;
     pa_bool_t use_rtclock:1;
+    pa_bool_t filter_added:1;
     pa_spawn_api spawn_api;
 
     pa_strlist *server_list;