pipewire: handle allocation failures

And make sure we don't leak things in the error paths.

src/pipewire/data-loop.c

@@ -85,6 +85,19 @@ static int do_stop(struct spa_loop *loop, bool async, uint32_t seq,
 	return 0;
 }
 
+static void data_loop_free(struct pw_data_loop *loop)
+{
+	if (loop->loop && loop->created)
+		pw_loop_destroy(loop->loop);
+
+	spa_hook_list_clean(&loop->listener_list);
+
+	free(loop->affinity);
+	free(loop->class);
+	pw_free_strv(loop->classes);
+	free(loop);
+}
+
 static struct pw_data_loop *loop_new(struct pw_loop *loop, const struct spa_dict *props)
 {
 	struct pw_data_loop *this;
@@ -98,6 +111,7 @@ static struct pw_data_loop *loop_new(struct pw_loop *loop, const struct spa_dict
 	}
 
 	pw_log_debug("%p: new", this);
+	spa_hook_list_init(&this->listener_list);
 
 	if (loop == NULL) {
 		loop = pw_loop_new(props);
@@ -142,14 +156,17 @@ static struct pw_data_loop *loop_new(struct pw_loop *loop, const struct spa_dict
 		goto error_free;
 	}
 	this->classes = pw_strv_parse(class, strlen(class), INT_MAX, NULL);
+	if (this->classes == NULL) {
+		res = -ENOMEM;
+		goto error_free;
+	}
 	if (!this->loop->name[0])
 		pw_loop_set_name(this->loop, name);
-	spa_hook_list_init(&this->listener_list);
 
 	return this;
 
 error_free:
-	free(this);
+	data_loop_free(this);
 error_cleanup:
 	errno = -res;
 	return NULL;
@@ -165,7 +182,6 @@ struct pw_data_loop *pw_data_loop_new(const struct spa_dict *props)
 	return loop_new(NULL, props);
 }
 
-
 /** Destroy a data loop
  * \param loop the data loop to destroy
  */
@@ -178,15 +194,7 @@ void pw_data_loop_destroy(struct pw_data_loop *loop)
 
 	pw_data_loop_stop(loop);
 
-	if (loop->created)
-		pw_loop_destroy(loop->loop);
-
-	spa_hook_list_clean(&loop->listener_list);
-
-	free(loop->affinity);
-	free(loop->class);
-	pw_free_strv(loop->classes);
-	free(loop);
+	data_loop_free(loop);
 }
 
 SPA_EXPORT

src/pipewire/impl-module.c

@@ -216,12 +216,15 @@ pw_context_load_module(struct pw_context *context,
 
 	pw_properties_set(this->properties, PW_KEY_MODULE_NAME, name);
 
+	spa_list_prepend(&context->module_list, &this->link);
+
 	this->info.name = name ? strdup(name) : NULL;
-	this->info.filename = filename;
-	filename = NULL;
+	this->info.filename = spa_steal_ptr(filename);
 	this->info.args = args ? strdup(args) : NULL;
 
-	spa_list_prepend(&context->module_list, &this->link);
+	if ((name != NULL && this->info.name == NULL) ||
+	    (args != NULL && this->info.args == NULL))
+		goto error_strdup_fail;
 
 	this->global = pw_global_new(context,
 				     PW_TYPE_INTERFACE_Module,
@@ -272,6 +275,9 @@ error_no_mem:
 	res = -errno;
 	pw_log_error("can't allocate module: %m");
 	goto error_close;
+error_strdup_fail:
+	res = -errno;
+	goto error_free_module;
 error_no_global:
 	res = -errno;
 	pw_log_error("\"%s\": failed to create global: %m", this->info.filename);

src/pipewire/stream.c

@@ -1580,11 +1580,11 @@ stream_new(struct pw_context *context, const char *name,
 	this = &impl->this;
 	pw_log_debug("%p: new \"%s\"", impl, name);
 
-	if (props == NULL) {
+	if (props == NULL)
 		props = pw_properties_new(PW_KEY_MEDIA_NAME, name, NULL);
-	} else if (pw_properties_get(props, PW_KEY_MEDIA_NAME) == NULL) {
+	else if (pw_properties_get(props, PW_KEY_MEDIA_NAME) == NULL)
 		pw_properties_set(props, PW_KEY_MEDIA_NAME, name);
-	}
+
 	if (props == NULL) {
 		res = -errno;
 		goto error_properties;
@@ -1610,6 +1610,10 @@ stream_new(struct pw_context *context, const char *name,
 	pw_context_conf_update_props(context, "stream.properties", props);
 
 	this->name = name ? strdup(name) : NULL;
+	if (name != NULL && this->name == NULL) {
+		res = -errno;
+		goto error_properties;
+	}
 	this->node_id = SPA_ID_INVALID;
 
 	spa_ringbuffer_init(&impl->dequeued.ring);