site-lock/site-lock.php at main · Timakus/site-lock · GitHub

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<?php
/*
Plugin Name: Site Lock (Simple)
Description: Password-protects the frontend. Toggle from Settings → Site Lock.
Version: 1.0
Author: Kris+Kelly
*/
add_action('admin_menu', function () {
    add_options_page('Site Lock', 'Site Lock', 'manage_options', 'site-lock', 'site_lock_settings_page');
});
function site_lock_settings_page() {
    if (!current_user_can('manage_options')) return;
    if (isset($_POST['site_lock_nonce']) && wp_verify_nonce($_POST['site_lock_nonce'], 'site_lock_save')) {
        update_option('pp_lock_enabled', isset($_POST['pp_lock_enabled']) ? 1 : 0);
        if (!empty($_POST['pp_new_pass'])) {
            $hash = hash('sha256', $_POST['pp_new_pass'] . (defined('AUTH_SALT') ? AUTH_SALT : 'salt'));
            update_option('pp_lock_hash', $hash);
        }
        echo '<div class="updated"><p>Saved.</p></div>';
    }
    $enabled = (int) get_option('pp_lock_enabled', 1);
    ?>
    <div class="wrap">
      <h1>Site Lock</h1>
      <form method="post">
        <?php wp_nonce_field('site_lock_save', 'site_lock_nonce'); ?>
        <p><label><input type="checkbox" name="pp_lock_enabled" <?php checked($enabled,1); ?>> Enable lock</label></p>
        <p>
          <label>Set/Change password:<br>
          <input type="password" name="pp_new_pass" style="min-width:320px"></label><br>
          <small>Leave empty to keep current password.</small>
        </p>
        <p><button class="button button-primary">Save</button></p>
      </form>
      <p><small>Logged-in users and /wp-admin/ are never blocked.</small></p>
    </div>
    <?php
}
add_action('template_redirect', function () {
    if (is_user_logged_in() || is_admin() || php_sapi_name()==='cli') return;
    $enabled = (int) get_option('pp_lock_enabled', 1);
    if (!$enabled) return;
    $uri = $_SERVER['REQUEST_URI'] ?? '';
    $allow = ['/wp-login.php','/wp-admin/admin-ajax.php','/wp-cron.php','/wp-json','/robots.txt','/sitemap','/.well-known/acme-challenge'];
    foreach ($allow as $p) { if (strpos($uri,$p)!==false) return; }
    $hash = get_option('pp_lock_hash');
    $cookie = 'pp_auth';
    if ($hash && isset($_COOKIE[$cookie]) && hash_equals($_COOKIE[$cookie], $hash)) return;
    if (!empty($_POST['pp_pass'])) {
        $try = hash('sha256', $_POST['pp_pass'] . (defined('AUTH_SALT') ? AUTH_SALT : 'salt'));
        if ($hash && hash_equals($hash, $try)) {
            setcookie($cookie, $hash, time()+86400, '/', COOKIE_DOMAIN, is_ssl(), true);
            wp_safe_redirect(home_url(add_query_arg([])));
            exit;
        } else {
            $error = 'Wrong password';
        }
    }
    status_header(401);
    nocache_headers();
    echo '<!doctype html><html lang="en"><head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <meta name="robots" content="noindex,nofollow">
    <title>Site Protected</title>
    <style>
      * {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
      }
      body {
        font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
        background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
        min-height: 100vh;
        display: flex;
        align-items: center;
        justify-content: center;
        line-height: 1.6;
      }
      .container {
        background: rgba(255, 255, 255, 0.95);
        backdrop-filter: blur(10px);
        border-radius: 20px;
        padding: 2.5rem;
        box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
        max-width: 400px;
        width: 90%;
        text-align: center;
        border: 1px solid rgba(255, 255, 255, 0.2);
      }
      .lock-icon {
        width: 60px;
        height: 60px;
        background: linear-gradient(135deg, #667eea, #764ba2);
        border-radius: 50%;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        margin-bottom: 1.5rem;
        box-shadow: 0 8px 16px rgba(102, 126, 234, 0.3);
      }
      .lock-icon::before {
        content: "🔒";
        font-size: 24px;
        filter: grayscale(1) brightness(0) invert(1);
      }
      h1 {
        color: #2d3748;
        font-size: 1.8rem;
        font-weight: 600;
        margin-bottom: 0.5rem;
      }
      p {
        color: #718096;
        margin-bottom: 2rem;
        font-size: 1rem;
      }
      .form-group {
        margin-bottom: 1.5rem;
        text-align: left;
      }
      input[type="password"] {
        width: 100%;
        padding: 1rem;
        border: 2px solid #e2e8f0;
        border-radius: 12px;
        font-size: 1rem;
        transition: all 0.3s ease;
        background: #f7fafc;
        outline: none;
      }
      input[type="password"]:focus {
        border-color: #667eea;
        background: #fff;
        box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
        transform: translateY(-1px);
      }
      button {
        width: 100%;
        padding: 1rem;
        background: linear-gradient(135deg, #667eea, #764ba2);
        color: white;
        border: none;
        border-radius: 12px;
        font-size: 1rem;
        font-weight: 600;
        cursor: pointer;
        transition: all 0.3s ease;
        text-transform: uppercase;
        letter-spacing: 0.5px;
      }
      button:hover {
        transform: translateY(-2px);
        box-shadow: 0 12px 24px rgba(102, 126, 234, 0.4);
      }
      button:active {
        transform: translateY(0);
      }
      .error {
        background: linear-gradient(135deg, #fc8181, #f56565);
        color: white;
        padding: 0.75rem;
        border-radius: 8px;
        margin-top: 1rem;
        font-size: 0.9rem;
        animation: shake 0.5s ease-in-out;
      }
      @keyframes shake {
        0%, 100% { transform: translateX(0); }
        25% { transform: translateX(-5px); }
        75% { transform: translateX(5px); }
      }
      .fade-in {
        animation: fadeIn 0.8s ease-out;
      }
      @keyframes fadeIn {
        from {
          opacity: 0;
          transform: translateY(30px);
        }
        to {
          opacity: 1;
          transform: translateY(0);
        }
      }
      @media (max-width: 480px) {
        .container {
          padding: 2rem;
          margin: 1rem;
        }
        h1 {
          font-size: 1.5rem;
        }
      }
    </style>
    </head>
    <body>
      <div class="container fade-in">
        <div class="lock-icon"></div>
        <h1>PROTECTED AREA</h1>
        <p>Enter the password to access this site</p>
        <form method="post">
          <div class="form-group">
            <input type="password" name="pp_pass" placeholder="Password here" autofocus required>
          </div>
          <button type="submit">Unlock Site</button>
        </form>'.
        (!empty($error) ? '<div class="error">'.$error.'</div>' : '') .
      '</div>
    </body>
    </html>';
    exit;
});