function advagg_add_default_dns_lookups in Advanced CSS/JS Aggregation 7.2

Alter the CSS or JS array adding in DNS domain info.

Parameters

array $array: CSS or JS array.

string $type: CSS or JS.

2 calls to advagg_add_default_dns_lookups()

advagg_get_css in ./advagg.module

Returns a themed representation of all stylesheets to attach to the page.

advagg_get_full_js in ./advagg.module

Get full JS array.

File

./advagg.module, line 6056

Advanced CSS/JS aggregation module.

Code

function advagg_add_default_dns_lookups(array &$array, $type) {

  // Skip if advagg is disabled.
  if (!advagg_enabled()) {
    return;
  }

  // Remove this return once CSS lookups are needed.
  if ($type !== 'js') {
    return;
  }

  // Add DNS information for some of the more popular modules.
  foreach ($array as &$value) {
    if (!is_string($value['data'])) {
      continue;
    }

    // Google Ad Manager.
    if (strpos($value['data'], '/google_service.') !== FALSE) {
      if (!empty($value['dns_prefetch']) && is_string($value['dns_prefetch'])) {
        $temp = $value['dns_prefetch'];
        unset($value['dns_prefetch']);
        $value['dns_prefetch'] = array(
          $temp,
        );
      }

      // Domains in the google_service.js file.
      $value['dns_prefetch'][] = 'https://csi.gstatic.com';
      $value['dns_prefetch'][] = 'https://pubads.g.doubleclick.net';
      $value['dns_prefetch'][] = 'https://partner.googleadservices.com';
      $value['dns_prefetch'][] = 'https://securepubads.g.doubleclick.net';

      // Domains in the google_ads.js file.
      $value['dns_prefetch'][] = 'https://pagead2.googlesyndication.com';

      // Other domains that usually get hit.
      $value['dns_prefetch'][] = 'https://cm.g.doubleclick.net';
      $value['dns_prefetch'][] = 'https://tpc.googlesyndication.com';
    }

    // Google Analytics.
    if (strpos($value['data'], 'GoogleAnalyticsObject') !== FALSE || strpos($value['data'], '.google-analytics.com/ga.js') !== FALSE) {
      if (!empty($value['dns_prefetch']) && is_string($value['dns_prefetch'])) {
        $temp = $value['dns_prefetch'];
        unset($value['dns_prefetch']);
        $value['dns_prefetch'] = array(
          $temp,
        );
      }
      if ($GLOBALS['is_https'] && strpos($value['data'], '.google-analytics.com/ga.js') !== FALSE) {
        $value['dns_prefetch'][] = 'https://ssl.google-analytics.com';
      }
      else {
        $value['dns_prefetch'][] = 'https://www.google-analytics.com';
      }
      $value['dns_prefetch'][] = 'https://stats.g.doubleclick.net';
    }
  }
}