mirror of
https://github.com/Lastorder-DC/rhymix.git
synced 2026-01-14 00:39:57 +09:00
92 lines
2.1 KiB
PHP
92 lines
2.1 KiB
PHP
<?php
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/**
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* Do not allow execution over the web.
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*/
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if (PHP_SAPI !== 'cli')
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{
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exit 1;
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}
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/**
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* Download the latest IPv6 data from KISA.
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*/
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$download_url = 'https://ip.kisa.or.kr/ip_cate_stat/stat_05_05_toexcel.act';
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$referer_url = 'https://ip.kisa.or.kr/ip_cate_stat/stat_05_05.act';
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$content = file_get_contents($download_url, false, stream_context_create(array(
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'http' => array(
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'user_agent' => 'Mozilla/5.0 (compatible; IP range generator)',
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'header' => 'Referer: ' . $referer_url . "\r\n",
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),
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)));
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if (!$content)
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{
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exit 2;
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}
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/**
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* Parse the HTML/Excel document.
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*/
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$regex = '#<tr>\\s*<td [^>]+>([0-9a-f:]+::)</td>\\s*<td [^>]+>(/[0-9]+)</td>#iU';
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preg_match_all($regex, $content, $matches, PREG_SET_ORDER);
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/**
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* Extract the address and netmask for each range.
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*/
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$ranges = array();
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foreach ($matches as $match)
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{
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$start = str_pad(str_replace(':', '', strtolower($match[1])), 16, '0', STR_PAD_RIGHT);
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$mask = str_repeat('f', ((64 - trim($match[2], '/')) / 4));
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$end = substr($start, 0, 16 - strlen($mask)) . $mask;
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$ranges[$start] = array($start, $end);
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}
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/**
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* Sort the ranges.
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*/
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ksort($ranges);
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$ranges = array_values($ranges);
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$count = count($ranges);
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/**
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* Merge adjacent ranges.
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*/
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for ($i = 0; $i < $count; $i++)
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{
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if ($i == 0) continue;
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$previous_i = $i - 1;
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while (true)
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{
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if ($ranges[$previous_i] !== null) break;
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$previous_i--;
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}
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if (hexdec($ranges[$i][0]) == hexdec($ranges[$previous_i][1]) + 1)
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{
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$ranges[$previous_i][1] = $ranges[$i][1];
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$ranges[$i] = null;
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}
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}
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/**
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* Organize into final format.
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*/
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$ranges_final = array();
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foreach ($ranges as $range)
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{
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if ($range !== null) $ranges_final[] = $range;
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}
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/**
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* Save to file.
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*/
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$content = '<' . '?php' . "\n\n" . '/**' . "\n" . ' * Source: ' . $referer_url . "\n";
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$content .= ' * Last Updated: ' . date('Y-m-d') . "\n" . ' */' . "\n";
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$content .= 'return ' . var_export($ranges_final, true) . ';' . "\n";
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file_put_contents('korea.ipv6.php', $content);
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/**
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* Report status.
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*/
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echo count($ranges_final) . ' IPv6 ranges saved.' . PHP_EOL;
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