rhymix/tools/korea_ip_ranges/korea.ipv4.parser.php
2017-06-30 00:09:11 +09:00

89 lines
1.9 KiB
PHP

<?php
/**
* Do not allow execution over the web.
*/
if (PHP_SAPI !== 'cli')
{
exit(1);
}
/**
* Download the latest IPv4 data from libkrisp.
*/
$download_url = 'https://mirror.oops.org/pub/oops/libkrisp/data/v2/krisp.csv.gz';
$referer_url = 'https://mirror.oops.org/pub/oops/libkrisp/data/v2/';
$content = file_get_contents($download_url, false, stream_context_create(array(
'http' => array(
'user_agent' => 'Mozilla/5.0 (compatible; IP range generator)',
'header' => 'Referer: ' . $referer_url . "\r\n",
),
)));
$content = gzdecode($content);
if (!$content)
{
exit(2);
}
/**
* Load IP range data.
*/
$ranges = array();
$content = explode("\n", $content);
foreach ($content as $line)
{
$line = explode("\t", $line);
if (count($line) < 2) continue;
$start = trim($line[0]);
$end = trim($line[1]);
$ranges[$start] = array($start, $end);
}
/**
* Sort the ranges.
*/
ksort($ranges);
$ranges = array_values($ranges);
$count = count($ranges);
/**
* Merge adjacent ranges.
*/
for ($i = 0; $i < $count; $i++)
{
if ($i == 0) continue;
$previous_i = $i - 1;
while (true)
{
if ($ranges[$previous_i] !== null) break;
$previous_i--;
}
if ($ranges[$i][0] == $ranges[$previous_i][1] + 1)
{
$ranges[$previous_i][1] = $ranges[$i][1];
$ranges[$i] = null;
}
}
/**
* Organize into final format.
*/
$ranges_final = array();
foreach ($ranges as $range)
{
if ($range !== null) $ranges_final[] = $range;
}
/**
* Save to file.
*/
$content = '<' . '?php' . "\n\n" . '/**' . "\n" . ' * Source: ' . $referer_url . "\n";
$content .= ' * Last Updated: ' . date('Y-m-d') . "\n" . ' */' . "\n";
$content .= 'return ' . var_export($ranges_final, true) . ';' . "\n";
file_put_contents(__DIR__ . '/../../common/defaults/korea.ipv4.php', $content);
/**
* Report status.
*/
echo count($ranges_final) . ' IPv4 ranges saved.' . PHP_EOL;