// Connect two rooms. Returns true on success or false on failure.
// Failure may be that the rooms are already connected or the room's maximum
// number of connections has been reached.
bool connect(unsigned int room1, unsigned int room2,
struct room rooms_list[NUM_ROOMS]) {
struct room *r1 = &rooms_list[room1];
struct room *r2 = &rooms_list[room2];
// If the number of connections is maxed out, we're done
if (r1->num_conns == MAX_CONN) {
return true;
}
// if the rooms are already connected, don't connect them again
if (already_connected(room1, room2)) {
return false;
}
// if either of the rooms maximum number of connections has been
// reached don't connect them.
if (r1->num_conns >= MAX_CONN || r2->num_conns >= MAX_CONN) {
return false;
}
assert(r1 != NULL);
assert(r2 != NULL);
// Connect the rooms
r1->connections[r1->num_conns] = r2;
r2->connections[r2->num_conns] = r1;
// update the number of connections
r1->num_conns++;
r2->num_conns++;
assert(r1->connections[r1->num_conns-1] != NULL);
assert(r2->connections[r2->num_conns-1] != NULL);
return true;
}
static DBusMessage *input_device_connect(DBusConnection *conn,
DBusMessage *msg, void *data)
{
struct input_device *idev = data;
struct input_conn *iconn;
struct fake_input *fake;
DBusMessage *reply;
GError *err = NULL;
iconn = find_connection(idev->connections, "HID");
if (!iconn)
return not_supported(msg);
if (iconn->pending_connect)
return in_progress(msg);
if (is_connected(iconn))
return already_connected(msg);
iconn->pending_connect = dbus_message_ref(msg);
fake = iconn->fake;
if (fake) {
/* Fake input device */
if (fake->connect(iconn, &err))
fake->flags |= FI_FLAG_CONNECTED;
} else {
/* HID devices */
GIOChannel *io;
io = bt_io_connect(BT_IO_L2CAP, control_connect_cb, iconn,
NULL, &err,
BT_IO_OPT_SOURCE_BDADDR, &idev->src,
BT_IO_OPT_DEST_BDADDR, &idev->dst,
BT_IO_OPT_PSM, L2CAP_PSM_HIDP_CTRL,
BT_IO_OPT_SEC_LEVEL, BT_IO_SEC_LOW,
BT_IO_OPT_INVALID);
iconn->ctrl_io = io;
}
if (err == NULL)
return NULL;
error("%s", err->message);
dbus_message_unref(iconn->pending_connect);
iconn->pending_connect = NULL;
reply = connection_attempt_failed(msg, err->message);
g_error_free(err);
return reply;
}
