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74 lines
1.8 KiB
Django/Jinja
74 lines
1.8 KiB
Django/Jinja
<?php
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date_default_timezone_set('UTC');
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require('func.php');
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$dhcp_config = file_get_contents('/etc/dhcpd.conf');
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$num_ranges = preg_match_all('/range[\s]+([\d]+\.[\d]+\.[\d]+\.[\d]+)[\s]+([\d]+\.[\d]+\.[\d]+\.[\d]+)/', $dhcp_config, $ranges);
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$lease_file_handle = fopen("/var/lib/dhcp/dhcpd.leases", "r");
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$activeleases = array();
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$lease = -1;
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$start = -1;
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$end = -1;
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while(($line = fgets($lease_file_handle)) !== false)
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{
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if(preg_match('/lease ([\d]+\.[\d]+\.[\d]+\.[\d]+)/', $line, $match))
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{
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$lease = ip2long($match[1]);
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continue;
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}
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elseif(preg_match('/starts \d ([\d]{4})\/([\d]{2})\/([\d]{2}) ([\d]{2}):([\d]{2}):([\d]{2})/', $line, $match))
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{
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$start = mktime($match[4], $match[5], $match[6], $match[2], $match[3], $match[1]);
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continue;
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}
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elseif(preg_match('/ends \d ([\d]{4})\/([\d]{2})\/([\d]{2}) ([\d]{2}):([\d]{2}):([\d]{2})/', $line, $match))
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{
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$end = mktime($match[4], $match[5], $match[6], $match[2], $match[3], $match[1]);
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if($lease > 0 && $start > 0 && $end > 0)
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{
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if( $start < time() && $end > time() )
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{
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$activeleases[$lease] = $lease;
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$lease = -1;
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$start = -1;
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$end = -1;
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}
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}
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}
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}
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$pools = array();
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for($range = 0; $range < $num_ranges; $range++)
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{
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$clients = 0;
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$range_start = ip2long($ranges[1][$range]);
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$range_end = ip2long($ranges[2][$range]);
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foreach($activeleases as $lease)
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{
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if( $lease > $range_start && $lease < $range_end )
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{
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$clients++;
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}
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}
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$pools[$range_start] = $clients;
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}
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$data = "";
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foreach($pools as $range => $clients)
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{
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$data .= 'clients,host={{ ansible_hostname }},pool='.long2ip($range).',type=backend value='.$clients."\n";
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}
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sendflux($data);
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?>
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