js.install in JS Callback Handler 6

Ensures JavaScript callback handler has been setup properly.

File

js.install

<?php

/**
 * @file
 * Ensures JavaScript callback handler has been setup properly.
 */

/**
 * Implementation of hook_requirements().
 */
function js_requirements($phase) {
  $requirements = array();
  $t = get_t();
  switch ($phase) {
    case 'install':
    case 'runtime':
      $path = drupal_get_path('module', 'js') . '/js.php';
      $title = $t('JavaScript callback handler');

      // Warn about missing js.php in root directoy.
      if (file_exists($path) && file_exists('js.php') && md5_file($path) != md5_file('js.php')) {
        $requirements['js'] = array(
          'title' => $title,
          'description' => $t('In order for JavaScript callbacks to work correctly, please copy the file at %mod and use it to replace %core.', array(
            '%core' => 'js.php',
            '%mod' => $path,
          )),
          'severity' => $phase == 'install' ? REQUIREMENT_WARNING : REQUIREMENT_ERROR,
          'value' => $t('Please copy js.php'),
        );
      }
      else {
        if (!file_exists($path)) {
          $requirements['js'] = array(
            'title' => $title,
            'description' => $t('You probably <em>moved</em> rather than <em>copied</em> the js.php file from %mod to %core. You should leave a copy of this file in the module directory so that you will not lose this file when you upgrade to another revision of Drupal.', array(
              '%core' => 'js.php',
              '%mod' => $path,
            )),
            'severity' => $phase == 'install' ? REQUIREMENT_WARNING : REQUIREMENT_ERROR,
            'value' => $t('js.php no longer exists in the js directory'),
          );
        }
        else {
          if ($phase == 'runtime') {

            // Warn about disabled clean URLs.
            if (!variable_get('clean_url', FALSE)) {
              $requirements['js'] = array(
                'title' => $title,
                'description' => $t('In order for JavaScript callbacks to work correctly, please <a href="!clean-urls">enable clean URLs</a>', array(
                  '!clean-urls' => url('admin/settings/clean-urls'),
                )),
                'severity' => REQUIREMENT_ERROR,
                'value' => $t('Enable clean URLs'),
              );
            }
            else {
              if (strpos(file_get_contents('.htaccess'), 'js.php') === FALSE) {
                $requirements['js'] = array(
                  'title' => $title,
                  'description' => $t('In order for increasing performance of JavaScript callbacks, please add the required <a href="!readme">RewriteRule</a>', array(
                    '!readme' => url(drupal_get_path('module', 'js') . '/README.txt'),
                  )),
                  'severity' => REQUIREMENT_WARNING,
                  'value' => $t('Add Apache RewriteRule to .htaccess'),
                );
              }
              else {
                $requirements['js'] = array(
                  'title' => $title,
                  'description' => t('The JavaScript callback handler has been installed correctly.', array(
                    '%core' => 'js.php',
                  )),
                  'severity' => REQUIREMENT_OK,
                  'value' => $t('Installed correctly'),
                );
              }
            }
          }
        }
      }
  }
  return $requirements;
}

Functions

Name	Description
js_requirements	Implementation of hook_requirements().