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#!/usr/bin/env python

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"""

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    Process bind zonefiles, without altering their structure.

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    Takes a zonefile as input, and gives a semantically identical zonefile as output, with the given changes.

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"""

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import logging; log = logging.getLogger('pvl.dns-process')

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import optparse

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import pvl.args

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import pvl.dns.process

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import pvl.dns.zone

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def main (argv):

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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.dns.process.optparser(parser))

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    parser.add_option('--serial',               metavar='YYMMDDXX',

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            help="Set serial for SOA record")

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    parser.add_option('--include-path',         metavar='PATH',

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            help="Rewrite includes to given absolute path")

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    parser.add_option('--include-trace',         metavar='FILE',

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            help="Write out included files to given file")

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    # input

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

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    # process

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    if options.include_trace:

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        include_trace = [ ]

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    else:

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        include_trace = None

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    zone = list(pvl.dns.process.apply_zone(options, args,

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            include_trace   = include_trace,

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    ))

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    if options.serial:

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        log.info("Set zone serial: %s", options.serial)

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        zone = list(pvl.dns.process.zone_serial(zone, options.serial))

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    if options.include_path:

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        log.info("Set zone include path: %s", options.include_path)

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        zone = list(pvl.dns.process.zone_includes(zone, options.include_path,

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                include_trace   = include_trace,

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        ))

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    if options.include_trace:

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        with pvl.args.apply_file(options.include_trace, 'w') as file:

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            for include in include_trace:

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                print >>file, include

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    pvl.dns.process.apply_zone_output(options, zone)

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    return 0

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if __name__ == '__main__':

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    pvl.args.main(main)