Class TimeStampField

scapy/layers/ntp.py:88–117

This field handles the timestamp fields in the NTP header.

class TimeStampField(FixedPointField):
    """
    This field handles the timestamp fields in the NTP header.
    """

    def __init__(self, name, default):
        FixedPointField.__init__(self, name, default, 64, 32)

    def i2repr(self, pkt, val):
        if val is None:
            return "--"
        val = self.i2h(pkt, val)
        if val < _NTP_BASETIME:
            return str(val)
        return time.strftime(
            "%a, %d %b %Y %H:%M:%S +0000",
            time.gmtime(int(val - _NTP_BASETIME))
        )

    def any2i(self, pkt, val):
        if isinstance(val, str):
            val = int(time.mktime(time.strptime(val))) + _NTP_BASETIME
        elif isinstance(val, datetime.datetime):
            val = int(val.strftime("%s")) + _NTP_BASETIME
        return FixedPointField.any2i(self, pkt, val)

    def i2m(self, pkt, val):
        if val is None:
            val = FixedPointField.any2i(self, pkt, time.time() + _NTP_BASETIME)
        return FixedPointField.i2m(self, pkt, val)


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