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#!/usr/bin/env python

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import logging; log = logging.getLogger('pvl.hosts-reverse')

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import optparse 

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import pvl.args

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import pvl.hosts

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import pvl.hosts.zone

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def main (argv):

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    """

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        Generate bind zonefiles from host definitions.

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    """

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    parser = optparse.OptionParser(main.__doc__)

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    parser.add_option_group(pvl.args.parser(parser))

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    parser.add_option_group(pvl.hosts.config.optparser(parser))

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    parser.add_option('--reverse-zone',         metavar='PREFIX',

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            help="Generate reverse zone for prefix")

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    parser.add_option('--unknown-host',         metavar='NAME',

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            help="Generate records for unused IPs")

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    # input

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    options, args = pvl.args.parse(parser, argv)

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    if not options.reverse_zone:

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        log.fatal("required --reverse-zone")

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        return 1

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    hosts = pvl.hosts.apply(options, args)

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    # process

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    prefix = pvl.dns.parse_prefix(options.reverse_zone)

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    return 0

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if __name__ == '__main__':

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    pvl.args.main(main)