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<?php
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// Check if the application is in maintenance mode...
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if (! file_exists($down = __DIR__.'/down')) {
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return;
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}
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// Decode the "down" file's JSON...
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$data = json_decode(file_get_contents($down), true);
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// Allow framework to handle request if no prerendered template...
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if (! isset($data['template'])) {
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return;
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}
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// Allow framework to handle request if request URI is in the exclude list...
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if (isset($data['except'])) {
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$uri = parse_url($_SERVER['REQUEST_URI'])['path'];
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$uri = rawurldecode($uri !== '/' ? trim($uri, '/') : $uri);
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foreach ((array) $data['except'] as $except) {
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$except = $except !== '/' ? trim($except, '/') : $except;
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if ($except == $uri) {
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return;
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}
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$except = preg_quote($except, '#');
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$except = str_replace('\*', '.*', $except);
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if (preg_match('#^'.$except.'\z#u', $uri) === 1) {
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return;
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}
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}
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}
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// Allow framework to handle maintenance mode bypass route...
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if (isset($data['secret']) && $_SERVER['REQUEST_URI'] === '/'.$data['secret']) {
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return;
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}
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// Determine if maintenance mode bypass cookie is valid...
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if (isset($_COOKIE['laravel_maintenance']) && isset($data['secret'])) {
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$payload = json_decode(base64_decode($_COOKIE['laravel_maintenance']), true);
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if (is_array($payload) &&
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is_numeric($payload['expires_at'] ?? null) &&
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isset($payload['mac']) &&
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hash_equals(hash_hmac('sha256', $payload['expires_at'], $data['secret']), $payload['mac']) &&
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(int) $payload['expires_at'] >= time()) {
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return;
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}
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}
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// Redirect to the proper path if necessary...
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if (isset($data['redirect']) && $_SERVER['REQUEST_URI'] !== $data['redirect']) {
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http_response_code(302);
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header('Location: '.$data['redirect']);
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exit;
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}
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// Output the prerendered template...
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http_response_code($data['status'] ?? 503);
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if (isset($data['retry'])) {
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header('Retry-After: '.$data['retry']);
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}
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if (isset($data['refresh'])) {
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header('Refresh: '.$data['refresh']);
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}
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echo $data['template'];
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exit;
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