50 lines
1.3 KiB
Plaintext
50 lines
1.3 KiB
Plaintext
|
#!/usr/bin/perl
|
||
|
|
use strict;
|
||
|
|
use warnings;
|
||
|
|
use esmith::ConfigDB;
|
||
|
|
|
||
|
|
my $DB = esmith::ConfigDB->open_ro or die ("Unable to open configuration database");
|
||
|
|
my $dhcpdns = $DB->get_prop('dhcp-dns','status') || 'disabled';
|
||
|
|
|
||
|
|
my $lease_file = "/var/lib/dhcpd/dhcpd.leases";
|
||
|
|
|
||
|
|
# last modified time
|
||
|
|
my $modtime = 0;
|
||
|
|
|
||
|
|
# seconds to wait
|
||
|
|
my $update_freq = 30;
|
||
|
|
|
||
|
|
#we want to write in log
|
||
|
|
sub log2messages
|
||
|
|
{
|
||
|
|
my $message = shift;
|
||
|
|
tie *FH, 'esmith::Logger';
|
||
|
|
print FH "$message";
|
||
|
|
close FH;
|
||
|
|
}
|
||
|
|
|
||
|
|
###########################################################################
|
||
|
|
# Main Loop
|
||
|
|
while ($dhcpdns eq 'enabled') {
|
||
|
|
|
||
|
|
# check the file's last updated time, if it's been changed, update
|
||
|
|
# the DNS and save the modified time. This will ALWAYS run once - on
|
||
|
|
# startup, since $modtime starts at zero.
|
||
|
|
|
||
|
|
my @stats = stat ($lease_file);
|
||
|
|
if ($stats[9] > $modtime) {
|
||
|
|
|
||
|
|
$modtime = $stats[9];
|
||
|
|
system ("/usr/bin/sv 1 /service/tinydns") ==0
|
||
|
|
or log2messages('Error service dhcp-dns : Unable to restart /service/tinydns');
|
||
|
|
|
||
|
|
system ("/usr/bin/sv 1 /service/dnscache") ==0
|
||
|
|
or log2messages('Error service dhcp-dns : Unable to do restart /service/dnscache');
|
||
|
|
}
|
||
|
|
|
||
|
|
# wait till next check time
|
||
|
|
sleep $update_freq;
|
||
|
|
|
||
|
|
} # end main
|
||
|
|
###########################################################################
|