C++ btd_error_invalid_args函数代码示例

static DBusMessage *register_agent(DBusConnection *conn,
					DBusMessage *msg, void *user_data)
{
	struct agent *agent;
	const char *sender, *path, *capability;
	uint8_t cap;

	sender = dbus_message_get_sender(msg);

	agent = g_hash_table_lookup(agent_list, sender);
	if (agent)
		return btd_error_already_exists(msg);

	if (dbus_message_get_args(msg, NULL, DBUS_TYPE_OBJECT_PATH, &path,
						DBUS_TYPE_STRING, &capability,
						DBUS_TYPE_INVALID) == FALSE)
		return btd_error_invalid_args(msg);

	cap = parse_io_capability(capability);
	if (cap == IO_CAPABILITY_INVALID)
		return btd_error_invalid_args(msg);

	agent = agent_create(sender, path, cap);
	if (!agent)
		return btd_error_invalid_args(msg);

	DBG("agent %s", agent->owner);

	g_hash_table_replace(agent_list, agent->owner, agent);

	return dbus_message_new_method_return(msg);
}

static DBusMessage *register_player(DBusConnection *conn, DBusMessage *msg,
					void *data)
{
	struct media_adapter *adapter = data;
	struct media_player *mp;
	DBusMessageIter args;
	const char *sender, *path;
	int err;

	sender = dbus_message_get_sender(msg);

	dbus_message_iter_init(msg, &args);

	dbus_message_iter_get_basic(&args, &path);
	dbus_message_iter_next(&args);

	if (media_adapter_find_player(adapter, sender, path) != NULL)
		return btd_error_already_exists(msg);

	mp = media_player_create(adapter, sender, path, &err);
	if (mp == NULL) {
		if (err == -EPROTONOSUPPORT)
			return btd_error_not_supported(msg);
		else
			return btd_error_invalid_args(msg);
	}

	if (parse_player_properties(mp, &args) == FALSE) {
		media_player_destroy(mp);
		return btd_error_invalid_args(msg);
	}

	return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
}

static DBusMessage *update_xml_record(DBusMessage *msg,
					struct service_adapter *serv_adapter)
{
	struct record_data *user_record;
	sdp_record_t *sdp_record;
	const char *record;
	dbus_uint32_t handle;
	int len;

	if (dbus_message_get_args(msg, NULL,
				DBUS_TYPE_UINT32, &handle,
				DBUS_TYPE_STRING, &record,
				DBUS_TYPE_INVALID) == FALSE)
		return btd_error_invalid_args(msg);

	len = (record ? strlen(record) : 0);
	if (len == 0)
		return btd_error_invalid_args(msg);

	user_record = find_record(serv_adapter, handle,
				dbus_message_get_sender(msg));
	if (!user_record)
		return btd_error_not_available(msg);

	sdp_record = sdp_xml_parse_record(record, len);
	if (!sdp_record) {
		error("Parsing of XML service record failed");
		return btd_error_failed(msg,
					"Parsing of XML service record failed");
	}

	return update_record(msg, serv_adapter, handle, sdp_record);
}

static DBusMessage *add_remote_data(DBusConnection *conn, DBusMessage *msg,
								void *data)
{
	struct btd_adapter *adapter = data;
	uint8_t *hash, *randomizer;
	int32_t hlen, rlen;
	const char *addr;
	bdaddr_t bdaddr;

	if (!dbus_message_get_args(msg, NULL,
			DBUS_TYPE_STRING, &addr,
			DBUS_TYPE_ARRAY, DBUS_TYPE_BYTE, &hash, &hlen,
			DBUS_TYPE_ARRAY, DBUS_TYPE_BYTE, &randomizer, &rlen,
			DBUS_TYPE_INVALID))
		return btd_error_invalid_args(msg);

	if (hlen != 16 || rlen != 16 || bachk(addr))
		return btd_error_invalid_args(msg);

	str2ba(addr, &bdaddr);

	if (btd_adapter_add_remote_oob_data(adapter, &bdaddr, hash, randomizer))
		return btd_error_failed(msg, "Request failed");

	return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
}

static DBusMessage *unregister_advertisement(DBusConnection *conn,
						DBusMessage *msg,
						void *user_data)
{
	struct btd_advertising *manager = user_data;
	DBusMessageIter args;
	struct advertisement *ad;
	struct dbus_obj_match match;

	DBG("UnregisterAdvertisement");

	if (!dbus_message_iter_init(msg, &args))
		return btd_error_invalid_args(msg);

	if (dbus_message_iter_get_arg_type(&args) != DBUS_TYPE_OBJECT_PATH)
		return btd_error_invalid_args(msg);

	dbus_message_iter_get_basic(&args, &match.path);

	match.owner = dbus_message_get_sender(msg);

	ad = queue_find(manager->ads, match_advertisement, &match);
	if (!ad)
		return btd_error_does_not_exist(msg);

	advertisement_remove(ad);

	return dbus_message_new_method_return(msg);
}

static DBusMessage *media_folder_change_folder(DBusConnection *conn,
						DBusMessage *msg, void *data)
{
	struct media_player *mp = data;
	struct media_folder *folder = mp->scope;
	struct player_callback *cb = mp->cb;
	const char *path;
	int err;

	if (!dbus_message_get_args(msg, NULL,
					DBUS_TYPE_OBJECT_PATH, &path,
					DBUS_TYPE_INVALID))
		return btd_error_invalid_args(msg);

	if (folder->msg != NULL)
		return btd_error_failed(msg, strerror(EBUSY));

	folder = media_player_find_folder(mp, path);
	if (folder == NULL)
		return btd_error_invalid_args(msg);

	if (mp->scope == folder)
		return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);

	if (folder == mp->playlist || folder == mp->folder ||
						folder == mp->search) {
		media_player_change_scope(mp, folder);
		return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
	}

	/*
	 * ChangePath can only navigate one level up/down so check if folder
	 * is direct child or parent of the current folder otherwise fail.
	 */
	if (!g_slist_find(mp->folder->subfolders, folder) &&
				!g_slist_find(folder->subfolders, mp->folder))
		return btd_error_invalid_args(msg);

	if (cb->cbs->change_folder == NULL)
		return btd_error_not_supported(msg);

	err = cb->cbs->change_folder(mp, folder->item->name, folder->item->uid,
								cb->user_data);
	if (err < 0)
		return btd_error_failed(msg, strerror(-err));

	mp->scope->msg = dbus_message_ref(msg);

	return NULL;
}

static DBusMessage *media_folder_list_items(DBusConnection *conn,
						DBusMessage *msg, void *data)
{
	struct media_player *mp = data;
	struct media_folder *folder = mp->scope;
	struct player_callback *cb = mp->cb;
	DBusMessageIter iter;
	uint32_t start, end;
	int err;

	dbus_message_iter_init(msg, &iter);

	if (parse_filters(mp, &iter, &start, &end) < 0)
		return btd_error_invalid_args(msg);

	if (cb->cbs->list_items == NULL)
		return btd_error_not_supported(msg);

	if (folder->msg != NULL)
		return btd_error_failed(msg, strerror(EBUSY));

	err = cb->cbs->list_items(mp, folder->item->name, start, end,
							cb->user_data);
	if (err < 0)
		return btd_error_failed(msg, strerror(-err));

	folder->msg = dbus_message_ref(msg);

	return NULL;
}

static DBusMessage *unregister_agent(DBusConnection *conn,
				DBusMessage *msg, void *data)
{
	struct audio_device *device = data;
	struct gateway *gw = device->gateway;
	const char *path;

	if (!gw->agent)
		goto done;

	if (strcmp(gw->agent->name, dbus_message_get_sender(msg)) != 0)
		return btd_error_not_authorized(msg);

	if (!dbus_message_get_args(msg, NULL,
				DBUS_TYPE_OBJECT_PATH, &path,
				DBUS_TYPE_INVALID))
		return btd_error_invalid_args(msg);

	if (strcmp(gw->agent->path, path) != 0)
		return btd_error_does_not_exist(msg);

	g_dbus_remove_watch(conn, gw->agent->watch);

	agent_free(gw->agent);
	gw->agent = NULL;

done:
	return dbus_message_new_method_return(msg);
}

static DBusMessage *register_agent(DBusConnection *conn,
					DBusMessage *msg, void *data)
{
	struct audio_device *device = data;
	struct gateway *gw = device->gateway;
	struct hf_agent *agent;
	const char *path, *name;

	if (gw->agent)
		return btd_error_already_exists(msg);

	if (!dbus_message_get_args(msg, NULL, DBUS_TYPE_OBJECT_PATH, &path,
						DBUS_TYPE_INVALID))
		return btd_error_invalid_args(msg);

	name = dbus_message_get_sender(msg);
	agent = g_new0(struct hf_agent, 1);

	agent->name = g_strdup(name);
	agent->path = g_strdup(path);

	agent->watch = g_dbus_add_disconnect_watch(conn, name,
						agent_exited, gw, NULL);

	gw->agent = agent;

	return dbus_message_new_method_return(msg);
}

static void controlpoint_method_reply(struct controlpoint_req *req,
								uint8_t code)
{
	DBusMessage *reply;

	switch (code) {
	case RSP_SUCCESS:
		reply = dbus_message_new_method_return(req->msg);
		break;
	case RSP_NOT_SUPPORTED:
		reply = btd_error_not_supported(req->msg);
		break;
	case RSP_INVALID_PARAM:
		reply = btd_error_invalid_args(req->msg);
		break;
	case RSP_FAILED:
		reply = btd_error_failed(req->msg, "Failed");
		break;
	default:
		reply = btd_error_failed(req->msg, "Unknown error");
		break;
	}

	g_dbus_send_message(btd_get_dbus_connection(), reply);

	dbus_message_unref(req->msg);
}

static DBusMessage *notify_unread_alert(DBusConnection *conn, DBusMessage *msg,
                                        void *data)
{
    uint32_t category_id = 0;
    uint8_t category_id_bit;
    uint8_t unread_count;

    if (!dbus_message_get_args(msg, NULL,
                               DBUS_TYPE_BYTE, &category_id,
                               DBUS_TYPE_BYTE, &unread_count,
                               DBUS_TYPE_INVALID)) {
        error("Invalid arguments");
        return NULL;
    }

    category_id_bit = 1 << category_id;
    if (!(supp_unread_alerts & category_id_bit)) {
        error("Unsupported catergory ID");
        return btd_error_invalid_args(msg);
    }

    unread_alerts[category_id].category_id = category_id;
    unread_alerts[category_id].unread_count = unread_count;

    DBG("Updated category %d", category_id);

    g_slist_foreach(alert_adapters, __notify_new_alert,
                    (gpointer)category_id);

    return dbus_message_new_method_return(msg);
}

static DBusMessage *unregister_watcher(DBusConnection *conn, DBusMessage *msg,
								void *data)
{
	struct heartrate_adapter *hradapter = data;
	struct watcher *watcher;
	const char *sender = dbus_message_get_sender(msg);
	char *path;

	if (!dbus_message_get_args(msg, NULL, DBUS_TYPE_OBJECT_PATH, &path,
							DBUS_TYPE_INVALID))
		return btd_error_invalid_args(msg);

	watcher = find_watcher(hradapter->watchers, sender, path);
	if (watcher == NULL)
		return btd_error_does_not_exist(msg);

	hradapter->watchers = g_slist_remove(hradapter->watchers, watcher);
	g_dbus_remove_watch(conn, watcher->id);

	if (g_slist_length(hradapter->watchers) == 0)
		g_slist_foreach(hradapter->devices, disable_measurement, 0);

	DBG("heartrate watcher [%s] unregistered", path);

	return dbus_message_new_method_return(msg);
}

static DBusMessage *set_cumulative_wheel_rev(DBusConnection *conn,
						DBusMessage *msg, void *data)
{
	struct csc *csc = data;
	dbus_uint32_t value;
	struct controlpoint_req *req;
	uint8_t att_val[5]; /* uint8 opcode + uint32 value */

	if (!dbus_message_get_args(msg, NULL, DBUS_TYPE_UINT32, &value,
							DBUS_TYPE_INVALID))
		return btd_error_invalid_args(msg);

	if (csc->pending_req != NULL)
		return btd_error_in_progress(msg);

	req = g_new(struct controlpoint_req, 1);
	req->csc = csc;
	req->opcode = SET_CUMULATIVE_VALUE;
	req->msg = dbus_message_ref(msg);

	csc->pending_req = req;

	att_val[0] = SET_CUMULATIVE_VALUE;
	put_le32(value, att_val + 1);

	gatt_write_char(csc->attrib, csc->controlpoint_val_handle, att_val,
		sizeof(att_val), controlpoint_write_cb, req);

	return NULL;
}

static DBusMessage *unregister_server(DBusConnection *conn,
					DBusMessage *msg, void *data)
{
	struct network_adapter *na = data;
	struct network_server *ns;
	DBusMessage *reply;
	const char *uuid;

	if (!dbus_message_get_args(msg, NULL, DBUS_TYPE_STRING, &uuid,
							DBUS_TYPE_INVALID))
		return btd_error_invalid_args(msg);

	ns = find_server_by_uuid(na->servers, uuid);
	if (!ns)
		return btd_error_failed(msg, "Invalid UUID");

	reply = dbus_message_new_method_return(msg);
	if (!reply)
		return NULL;

	g_dbus_remove_watch(conn, ns->watch_id);

	server_disconnect(conn, ns);

	return reply;
}

static DBusMessage *set_link_loss_alert(DBusConnection *conn, DBusMessage *msg,
						const char *level, void *data)
{
	struct monitor *monitor = data;
	struct btd_device *device = monitor->device;
	bdaddr_t sba, dba;

	if (!level_is_valid(level))
		return btd_error_invalid_args(msg);

	if (g_strcmp0(monitor->linklosslevel, level) == 0)
		return dbus_message_new_method_return(msg);

	g_free(monitor->linklosslevel);
	monitor->linklosslevel = g_strdup(level);

	adapter_get_address(device_get_adapter(device), &sba);
	device_get_address(device, &dba);

	write_proximity_config(&sba, &dba, "LinkLossAlertLevel", level);

	if (monitor->attrib)
		write_alert_level(monitor);

	return dbus_message_new_method_return(msg);
}