<?php
declare(strict_types=1);
use Airship\Engine\{
Cache\File as FileCache,
Cache\SharedMemory as MemoryCache
};
use ParagonIE\ConstantTime\Binary;
if (empty($_POST)) {
/**
* Let's get rid of trailing slashes in URLs without POST data
*/
$sliceAt = Binary::safeStrlen($_SERVER['REQUEST_URI']) - 1;
if ($sliceAt > 0 && $_SERVER['REQUEST_URI'][$sliceAt] === '/') {
\Airship\redirect(
'/' . \trim($_SERVER['REQUEST_URI'], '/')
);
}
/**
* Let's handle static content caching
*/
if (\extension_loaded('apcu')) {
$staticCache = (new MemoryCache())
->personalize('staticPage:');
$cspCache = (new MemoryCache())
->personalize('contentSecurityPolicy:');
} else {
if (!\is_dir(ROOT . '/tmp/cache/static')) {
require_once ROOT . '/tmp_dirs.php';
}
$staticCache = new FileCache(ROOT . '/tmp/cache/static');
$cspCache = new FileCache(ROOT . '/tmp/cache/csp_static');
}
$port = $_SERVER['HTTP_PORT'] ?? '';
$lookup = $_SERVER['HTTP_HOST'] . ':' . $port . '/' . $_SERVER['REQUEST_URI'];
$staticPage = $staticCache->get($lookup);
if (!empty($staticPage)) {
if (!\headers_sent()) {
foreach (\Airship\get_standard_headers('text/plain;charset=UTF-8') as $left => $right) {
\header($left . ': ' . $right);
}
}
$csp = $cspCache->get($lookup);
if (!empty($csp)) {
foreach (\json_decode($csp, true) as $cspHeader) {
\header($cspHeader);
}
}
echo $staticPage;
// This is just for benchmarking purposes:
echo '<!-- Load time: ' . \round(\microtime(true) - $start, 5) . ' s (static page) -->';
exit;
}
unset($staticCache);
}
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