userauth.py 文件源码

def _pamConv(self, items):
        resp = []
        for message, kind in items:
            if kind == 1: # password
                resp.append((message, 0))
            elif kind == 2: # text
                resp.append((message, 1))
            elif kind in (3, 4):
                return defer.fail(error.ConchError('cannot handle PAM 3 or 4 messages'))
            else:
                return defer.fail(error.ConchError('bad PAM auth kind %i' % kind))
        packet = NS('')+NS('')+NS('')
        packet += struct.pack('>L', len(resp))
        for prompt, echo in resp:
            packet += NS(prompt)
            packet += chr(echo)
        self.transport.sendPacket(MSG_USERAUTH_INFO_REQUEST, packet)
        self._pamDeferred = defer.Deferred()
        return self._pamDeferred