authentication.py 文件源码

def authenticate(self, request):
        """
        Returns a `Person` if a correct access token has been supplied.  Otherwise returns `None`.
        """
        auth = get_authorization_header(request).split()

        if not auth or auth[0].lower() != b'bearer':
            return None

        if len(auth) == 1:
            msg = _('Invalid basic header. No credentials provided.')
            raise exceptions.AuthenticationFailed(msg)
        elif len(auth) > 2:
            msg = _('Invalid basic header. Credentials string should not contain spaces.')
            raise exceptions.AuthenticationFailed(msg)

        try:
            token = AccessToken.get_token(auth[1].decode())
        except (InvalidTokenException, UnicodeDecodeError):
            msg = _('Token invalide.')
            raise exceptions.AuthenticationFailed(msg)

        token.person.role.token = token

        return token.person.role, token