author | Tero Marttila <tero.marttila@aalto.fi> |
Tue, 03 Mar 2015 13:05:13 +0200 | |
changeset 726 | 8790e1e28661 |
parent 228 | 3b1437d4b0a1 |
permissions | -rwxr-xr-x |
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#!/usr/bin/env python |
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""" |
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Monitor DHCP use. |
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""" |
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split pvl.dhcp-leases from pvl.syslog-dhcp using pvl.dhcp.hosts/syslog/leases
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__version__ = '0.1' |
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import pvl.args |
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import pvl.syslog.args |
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import pvl.verkko.db as db |
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import pvl.dhcp.syslog |
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import pvl.dhcp.hosts |
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import logging, optparse |
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log = logging.getLogger('main') |
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# name of process in syslog |
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DHCP_SYSLOG_PROG = 'dhcpd' |
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def parse_options (argv) : |
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""" |
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Parse command-line arguments. |
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""" |
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prog = argv[0] |
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parser = optparse.OptionParser( |
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prog = prog, |
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usage = '%prog: [options]', |
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version = __version__, |
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# module docstring |
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description = __doc__, |
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) |
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# options |
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parser.add_option_group(pvl.args.parser(parser)) |
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## syslog |
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parser.add_option_group(pvl.syslog.args.parser(parser, prog=DHCP_SYSLOG_PROG)) |
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## XXX: networks |
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parser.add_option('--network', metavar='NET', action='append', |
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help="Filter leases by network prefix as plugin instance") |
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parser.add_option('--gateway', metavar='GW/IFACE', action='append', |
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help="Filter messages by gateway/interface as plugin instance") |
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## hosts |
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parser.add_option('--database', metavar='URI', |
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help="Track hosts in given database") |
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parser.add_option('--create', action='store_true', |
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help="Initialize database") |
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# defaults |
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parser.set_defaults( |
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) |
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# parse |
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options, args = parser.parse_args(argv[1:]) |
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# apply |
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pvl.args.apply(options, prog) |
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if not options.database : |
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parser.error("Missing required option: --database") |
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return options, args |
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def main (argv) : |
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options, args = parse_options(argv) |
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# db |
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if not options.database : |
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log.error("No database given") |
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return 1 |
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log.info("Open up database: %s", options.database) |
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db = pvl.verkko.db.Database(options.database) |
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hosts_db = pvl.dhcp.hosts.DHCPHostsDatabase(db) |
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86 |
|
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87 |
if options.create : |
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88 |
hosts_db.create() |
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89 |
|
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90 |
# syslog |
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log.info("Open up syslog...") |
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syslog = pvl.syslog.args.apply(options) |
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parser = pvl.dhcp.syslog.DHCPSyslogParser() |
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94 |
|
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log.info("Enter mainloop...") |
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for source in syslog.main() : |
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# parse dhcp messages from syslog |
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98 |
for host in parser(source) : |
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log.debug("%s: %s", source, host) |
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100 |
|
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101 |
hosts_db(host) |
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102 |
|
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103 |
# done |
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104 |
return 0 |
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105 |
|
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106 |
if __name__ == '__main__': |
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107 |
import sys |
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108 |
|
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109 |
sys.exit(main(sys.argv)) |