workflow.py 文件源码

def _call_security(self, action, service, account, *args):
        """Call ``security`` CLI program that provides access to keychains.

        May raise `PasswordNotFound`, `PasswordExists` or `KeychainError`
        exceptions (the first two are subclasses of `KeychainError`).

        :param action: The ``security`` action to call, e.g.
                           ``add-generic-password``
        :type action: ``unicode``
        :param service: Name of the service.
        :type service: ``unicode``
        :param account: name of the account the password is for, e.g.
            "Pinboard"
        :type account: ``unicode``
        :param password: the password to secure
        :type password: ``unicode``
        :param *args: list of command line arguments to be passed to
                      ``security``
        :type *args: `list` or `tuple`
        :returns: ``(retcode, output)``. ``retcode`` is an `int`, ``output`` a
                  ``unicode`` string.
        :rtype: `tuple` (`int`, ``unicode``)

        """
        cmd = ['security', action, '-s', service, '-a', account] + list(args)
        p = subprocess.Popen(cmd, stdout=subprocess.PIPE,
                             stderr=subprocess.STDOUT)
        stdout, _ = p.communicate()
        if p.returncode == 44:  # password does not exist
            raise PasswordNotFound()
        elif p.returncode == 45:  # password already exists
            raise PasswordExists()
        elif p.returncode > 0:
            err = KeychainError('Unknown Keychain error : %s' % stdout)
            err.retcode = p.returncode
            raise err
        return stdout.strip().decode('utf-8')