Class RoomPasswordProvider

syncplay/utils.py:507–540

class RoomPasswordProvider(object):
    CONTROLLED_ROOM_REGEX = re.compile(r"^\+(.*):(\w{12})$")
    PASSWORD_REGEX = re.compile(r"[A-Z]{2}-\d{3}-\d{3}")

    @staticmethod
    def isControlledRoom(roomName):
        return bool(re.match(RoomPasswordProvider.CONTROLLED_ROOM_REGEX, roomName))

    @staticmethod
    def check(roomName, password, salt):
        if not password or not re.match(RoomPasswordProvider.PASSWORD_REGEX, password):
            raise ValueError()

        if not roomName:
            raise NotControlledRoom()
        match = re.match(RoomPasswordProvider.CONTROLLED_ROOM_REGEX, roomName)
        if not match:
            raise NotControlledRoom()
        roomHash = match.group(2)
        computedHash = RoomPasswordProvider._computeRoomHash(match.group(1), password, salt)
        return roomHash == computedHash

    @staticmethod
    def getControlledRoomName(roomName, password, salt):
        return "+" + roomName + ":" + RoomPasswordProvider._computeRoomHash(roomName, password, salt)

    @staticmethod
    def _computeRoomHash(roomName, password, salt):
        roomName = roomName.encode('utf8')
        salt = salt.encode('utf8')
        password = password.encode('utf8')
        salt = hashlib.sha256(salt).hexdigest().encode('utf8')
        provisionalHash = hashlib.sha256(roomName + salt).hexdigest().encode('utf8')
        return hashlib.sha1(provisionalHash + salt + password).hexdigest()[:12].upper()


class RandomStringGenerator(object):