# protocol.py - protocol name and number lookup routines
#
# Copyright (C) 2011 Arthur de Jong
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
# 02110-1301 USA

import logging

import constants
import common


attmap = common.Attributes(cn='cn', ipProtocolNumber='ipProtocolNumber')
filter = '(objectClass=ipProtocol)'


class ProtocolRequest(common.Request):

    def write(self, dn, attributes, parameters):
        # get name
        name = common.get_rdn_value(dn, attmap['cn'])
        names = attributes['cn']
        if not names:
            print 'Error: entry %s does not contain %s value' % (dn, attmap['cn'])
        if 'cn' in parameters and parameters['cn'] not in names:
            return # case of result entry did not match
        if not name:
            name = names.pop(0)
        elif name in names:
            names.remove(name)
        # get number
        ( number, ) = attributes['ipProtocolNumber']
        if not number:
            print 'Error: entry %s does not contain %s value' % (dn, attmap['ipProtocolNumber'])
        number = int(number)
        # write result
        self.fp.write_int32(constants.NSLCD_RESULT_BEGIN)
        self.fp.write_string(name)
        self.fp.write_stringlist(names)
        self.fp.write_int32(number)


class ProtocolByNameRequest(ProtocolRequest):

    action = constants.NSLCD_ACTION_PROTOCOL_BYNAME

    def read_parameters(self, fp):
        return dict(cn=fp.read_string())


class ProtocolByNumberRequest(ProtocolRequest):

    action = constants.NSLCD_ACTION_PROTOCOL_BYNUMBER

    def read_parameters(self, fp):
        return dict(ipProtocolNumber=fp.read_int32())


class ProtocolAllRequest(ProtocolRequest):

    action = constants.NSLCD_ACTION_PROTOCOL_ALL