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|
#!/usr/bin/perl
# isc2ippool Insert ISC DHCPD lease entries into SQL database (ippool).
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
#
# Copyright (C) 2012 Arran Cudbard-Bell (a.cudbardb@freeradius.org)
use warnings;
use strict;
use DateTime;
use DateTime::Format::Strptime;
use DateTime::Format::DBI;
use Getopt::Long;
use Text::DHCPLeases;
use DBI;
my $lease_file = '/var/db/dhcpd.leases';
my $sql_type = 'mysql';
my $sql_host = 'localhost';
my $sql_user = 'radius';
my $sql_pass = 'radpass';
my $sql_database = 'radius';
my $sql_table = 'dhcpippool';
my $pool_name = '';
my $insert_only = 0;
my $verbose;
my $help;
sub error {
print STDERR @_, "\n";
exit(64);
}
sub notice {
if ($verbose) {
printf(shift . "\n", @_);
}
}
sub help {
my @this = split('/', $0);
print <<HELP
$this[$#this] [options] <pool>
Options:
-leases <lease file> - The lease file to parse (defaults to '$lease_file')
-no-update - Don't update existing lease entries
-type - SQL database type (defaults to '$sql_type')
-table - SQL table (defaults to '$sql_table')
-h | -host - SQL host to connect to
-u | -user - SQL user
-p | -pass - SQL password
-v - Verbose
-help - This help text
HELP
;
exit(0);
}
GetOptions (
'leases=s' => \$lease_file,
'no-update' => \$insert_only,
'type=s' => \$sql_type,
'table=s' => \$sql_table,
'h|host=s' => \$sql_host,
'u|user=s' => \$sql_user,
'p|pass=s' => \$sql_pass,
'v' => \$verbose,
'help' => \$help
) or error('Failed parsing options');
#
# Poolname must be provided, and we need at least some arguments...
#
help if !scalar @ARGV or ($pool_name = $ARGV[$#ARGV]) =~ /^-/;
-r $lease_file or
error("Lease file ($lease_file) doesn\'t exist or isn't readable");
my $leases = Text::DHCPLeases->new(file => $lease_file) or
error("Failed parsing leases file (or lease file empty)");
my $handle = DBI->connect(
"DBI:$sql_type:database=$sql_database;host=$sql_host",
$sql_user, $sql_pass, {RaiseError => 1}
);
my $dt_isc = DateTime::Format::Strptime->new(pattern => '%Y/%m/%d %H:%M:%S');
my $dt_sql = DateTime::Format::DBI->new($handle);
for my $lease ($leases->get_objects) {
next unless ($lease->binding_state && $lease->binding_state eq 'active');
my($query, @result);
eval {
$query = $handle->prepare("
SELECT expiry_time, framedipaddress FROM $sql_table
WHERE pool_name = ?
AND pool_key = ?;"
, undef);
$query->bind_param(1, $pool_name);
$query->bind_param(2, $lease->mac_address);
$query->execute();
@result = $query->fetchrow_array();
};
error($@) if $@;
my $ends_isc = $dt_isc->parse_datetime($lease->ends =~ m{^(?:[0-9]+) (.+)});
if (!$query->rows) {
eval {
$handle->do("
INSERT INTO $sql_table (
pool_name, framedipaddress,
expiry_time, pool_key)
VALUES (?, ?, ?, ?);"
, undef
, $pool_name
, $lease->ip_address
, $dt_sql->format_datetime($ends_isc)
, $lease->mac_address
);
};
error($@) if $@;
notice("MAC:'%s' inserted with IP:'%s'.",
$lease->mac_address, $lease->ip_address);
next;
}
my $ends_sql = $dt_sql->parse_datetime($result[0]);
if ($insert_only && (($result[1] ne $lease->ip_address) ||
(DateTime->compare($ends_sql, $ends_isc) < 0))) {
eval {
$handle->do("
UPDATE $sql_table
SET
pool_key = ?, expiry_time = ?
WHERE pool_name = ?
AND framedipaddress = ?;"
, undef
, $lease->mac_address
, $dt_sql->format_datetime($ends_isc)
, $pool_name
, $lease->ip_address
);
};
error($@) if $@;
notice("MAC:'%s' updated. ISC-TS: '%s', SQL-TS: '%s', ISC-IP: '%s', SQL-IP: '%s'.",
$lease->mac_address,
$dt_sql->format_datetime($ends_isc),
$dt_sql->format_datetime($ends_sql),
$lease->ip_address,
$result[1]);
next;
}
notice("MAC:'%s' skipped (no update %s). ",
$lease->mac_address, $insert_only ? 'allowed' : 'needed');
}
exit(0);
|
