ImageLinker/image.php at main · TagSteel/ImageLinker · GitHub

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<?php

declare(strict_types=1);

$id = $_GET['id'] ?? '';
if (!is_string($id) || $id === '') {
  $requestUri = $_SERVER['REQUEST_URI'] ?? '';
  if (is_string($requestUri)) {
    $path = parse_url($requestUri, PHP_URL_PATH);
    if (is_string($path) && preg_match('#^/image/([a-f0-9]{32})$#', $path, $matches) === 1) {
      $id = $matches[1];
    }
  }
}

if (!is_string($id) || !preg_match('/^[a-f0-9]{32}$/', $id)) {
    http_response_code(404);
    echo 'Image not found';
    exit;
}

$uploadsDir = __DIR__ . DIRECTORY_SEPARATOR . 'uploads';
$matches = glob($uploadsDir . DIRECTORY_SEPARATOR . $id . '.*') ?: [];

if (count($matches) === 0) {
    http_response_code(404);
    echo 'Image not found';
    exit;
}

$filename = basename($matches[0]);
$imageUrl = '/uploads/' . rawurlencode($filename);
?>
<!doctype html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Shared Image</title>
    <link rel="stylesheet" href="/public/styles.css" />
  </head>
  <body>
    <main class="viewer-container">
      <h1>Shared Image</h1>
      <img src="<?= htmlspecialchars($imageUrl, ENT_QUOTES, 'UTF-8'); ?>" alt="Shared image" class="viewer-image" />
      <p><a href="/">Upload another image</a></p>
    </main>
  </body>
</html>