advagg_relocate.module

<?php


/**
 * @file
 * Advanced aggregation relocate module.
 */

/**
 * @addtogroup default_variables
 * @{
 */

/**
 * Default value to see if JS is loaded locally.
 */
define('ADVAGG_RELOCATE_JS', FALSE);

/**
 * If the external file has a longer TTL then this value do not cache locally.
 */
define('ADVAGG_RELOCATE_JS_TTL', 604800);

/**
 * Minimum cache lifetime, 600 seconds by default.
 */
define('ADVAGG_RELOCATE_JS_MIN_TTL', 600);

/**
 * Default value to see if GA JS is loaded locally.
 */
define('ADVAGG_RELOCATE_JS_GA_LOCAL', FALSE);

/**
 * Default value to see if GTM JS is loaded locally.
 */
define('ADVAGG_RELOCATE_JS_GTM_LOCAL', FALSE);

/**
 * Default value to see if fbds JS is loaded locally.
 */
define('ADVAGG_RELOCATE_JS_FBDS_LOCAL', FALSE);

/**
 * Default value to see if fbevents JS is loaded locally.
 */
define('ADVAGG_RELOCATE_JS_FBEVENTS_LOCAL', FALSE);

/**
 * Default value to see if piwik JS is loaded locally.
 */
define('ADVAGG_RELOCATE_JS_PIWIK_LOCAL', FALSE);

/**
 * Default value to see if perfectaudience JS is loaded locally.
 */
define('ADVAGG_RELOCATE_JS_PERFECTAUDIENCE_LOCAL', FALSE);

/**
 * Default value to see if twitter uwt JS is loaded locally.
 */
define('ADVAGG_RELOCATE_JS_TWITTER_UWT_LOCAL', FALSE);

/**
 * Default value to see if twitter uwt JS is loaded locally.
 */
define('ADVAGG_RELOCATE_JS_LINKEDIN_INSIGHT_LOCAL', FALSE);

/**
 * Default value to see if CSS is loaded locally.
 */
define('ADVAGG_RELOCATE_CSS', FALSE);

/**
 * If the external file has a longer TTL then this value do not cache locally.
 */
define('ADVAGG_RELOCATE_CSS_TTL', 604800);

/**
 * Minimum cache lifetime, 600 seconds by default.
 */
define('ADVAGG_RELOCATE_CSS_MIN_TTL', 600);

/**
 * Default value to see if css inlining import is enabled.
 */
define('ADVAGG_RELOCATE_CSS_INLINE_IMPORT', FALSE);

/**
 * Default value to see if css inlining external css is enabled.
 */
define('ADVAGG_RELOCATE_CSS_INLINE_EXTERNAL', FALSE);

/**
 * Default value for blacklisted JS domains.
 */
define('ADVAGG_RELOCATE_JS_DOMAINS_BLACKLIST', "js.stripe.com\n");

/**
 * Default value for blacklisted JS files.
 */
define('ADVAGG_RELOCATE_JS_FILES_BLACKLIST', '');

/**
 * Default value for list of fbevents.js pixel ids.
 */
define('ADVAGG_RELOCATE_JS_FBEVENTS_LOCAL_IDS', '');

/**
 * Default value for supported CSS font domains.
 */
define('ADVAGG_RELOCATE_CSS_FONT_DOMAINS', "fonts.googleapis.com");

/**
 * Default value for blacklisted CSS domains.
 */
define('ADVAGG_RELOCATE_CSS_DOMAINS_BLACKLIST', '');

/**
 * Default value for blacklisted CSS files.
 */
define('ADVAGG_RELOCATE_CSS_FILES_BLACKLIST', '');

/**
 * Default value for where relocated files are kept.
 */
define('ADVAGG_RELOCATE_DIRECTORY', 'public://advagg_relocate/');

/**
 * If 4 the admin section gets unlocked.
 */
define('ADVAGG_RELOCATE_ADMIN_MODE', 4);

/**
 * @} End of "addtogroup default_variables".
 */

/**
 * @addtogroup hooks
 * @{
 */

/**
 * Implements hook_module_implements_alter().
 */
function advagg_relocate_module_implements_alter(&$implementations, $hook) {
    // Move advagg_relocate to the top.
    if ($hook === 'advagg_get_js_file_contents_alter' && array_key_exists('advagg_relocate', $implementations)) {
        $item = array(
            'advagg_relocate' => $implementations['advagg_relocate'],
        );
        unset($implementations['advagg_relocate']);
        $implementations = array_merge($item, $implementations);
    }
}

/**
 * Implements hook_menu().
 */
function advagg_relocate_menu() {
    $file_path = drupal_get_path('module', 'advagg_relocate');
    $config_path = advagg_admin_config_root_path();
    $items[$config_path . '/advagg/relocate'] = array(
        'title' => 'Relocate',
        'description' => 'Move external items to be local.',
        'page callback' => 'drupal_get_form',
        'page arguments' => array(
            'advagg_relocate_admin_settings_form',
        ),
        'type' => MENU_LOCAL_TASK,
        'access arguments' => array(
            'administer site configuration',
        ),
        'file path' => $file_path,
        'file' => 'advagg_relocate.admin.inc',
        'weight' => 10,
    );
    return $items;
}

/**
 * Implements hook_css_alter().
 */
function advagg_relocate_css_alter(&$css) {
    if (!module_exists('advagg') || !advagg_enabled()) {
        return;
    }
    $aggregate_settings = advagg_current_hooks_hash_array();
    // Check external css setting.
    if (empty($aggregate_settings['variables']['advagg_relocate_css_inline_external'])) {
        return;
    }
    // Handle fonts.
    $replacements = array();
    foreach ($css as $key => &$values) {
        if ($values['type'] !== 'external') {
            continue;
        }
        if (!advagg_relocate_check_domain_of_font_url($key, $aggregate_settings)) {
            continue;
        }
        module_load_include('advagg.inc', 'advagg_relocate');
        $font_faces = advagg_relocate_get_remote_font_data($key, $aggregate_settings);
        if (empty($font_faces)) {
            continue;
        }
        $new_css = advagg_relocate_font_face_parser($font_faces);
        $values['data'] = $new_css;
        $values['type'] = 'inline';
        // Add DNS information for font domains.
        $parse = @parse_url($key);
        if (strpos($parse['host'], 'fonts.googleapis.com') !== FALSE) {
            // Add fonts.gstatic.com when fonts.googleapis.com is added.
            $values['dns_prefetch'] = 'https://fonts.gstatic.com/#crossorigin';
            $values['preload'] = 'https://fonts.gstatic.com/#crossorigin';
        }
        // Move this css to the top.
        if (module_exists('advagg_mod') && $aggregate_settings['variables']['advagg_mod_css_adjust_sort_external']) {
            $values['group'] = CSS_SYSTEM - 1;
            $values['weight'] = -50000;
            $values['movable'] = FALSE;
        }
        // Do not move this css to the bottom.
        if (module_exists('advagg_mod') && $aggregate_settings['variables']['advagg_mod_css_adjust_sort_inline']) {
            $values['movable'] = FALSE;
        }
        $replacements[basename($key)] = $key;
    }
    if (!empty($replacements)) {
        $css = advagg_relocate_key_rename($css, $replacements);
    }
}

/**
 * Implements hook_cron().
 */
function advagg_relocate_cron() {
    // Get filenames in directory.
    $dir = rtrim(variable_get('advagg_relocate_directory', ADVAGG_RELOCATE_DIRECTORY), '/');
    $files = file_scan_directory($dir, '/.*/');
    // Get cached objects from filenames.
    $cids = array();
    foreach ($files as $info) {
        $ext = strtolower(pathinfo($info->filename, PATHINFO_EXTENSION));
        $cids["advagg_relocate_{$ext}_external:{$info->filename}"] = "advagg_relocate_{$ext}_external:{$info->filename}";
    }
    $cached_data = cache_get_multiple($cids, 'cache_advagg_info');
    // Build css and js arrays.
    $css = array();
    $js = array();
    foreach ($cached_data as $values) {
        $url = $values->data->url;
        $ext = strtolower(pathinfo($url, PATHINFO_EXTENSION));
        if ($ext === "css") {
            $css[$url]['data'] = $url;
            $css[$url]['type'] = 'external';
        }
        elseif ($ext === "js") {
            $js[$url]['data'] = $url;
            $js[$url]['type'] = 'external';
        }
        elseif (!empty($values->headers['content-type']) && stripos($values->headers['content-type'], 'css')) {
            $css[$url]['data'] = $url;
            $css[$url]['type'] = 'external';
        }
        elseif (!empty($values->headers['content-type']) && stripos($values->headers['content-type'], 'javascript')) {
            $js[$url]['data'] = $url;
            $js[$url]['type'] = 'external';
        }
    }
    // Refresh cached data.
    if (!empty($js)) {
        advagg_relocate_js_post_alter($js, TRUE);
    }
    if (!empty($css)) {
        advagg_relocate_css_post_alter($css, TRUE);
    }
}

/**
 * Implements hook_form_FORM_ID_alter().
 *
 * Give advice on how to temporarily disable css/js aggregation.
 */
function advagg_relocate_form_advagg_admin_operations_form_alter(&$form, &$form_state) {
    module_load_include('admin.inc', 'advagg_relocate');
    advagg_relocate_admin_form_advagg_admin_operations_form($form, $form_state);
}

/**
 * @} End of "addtogroup hooks".
 */

/**
 * @addtogroup advagg_hooks
 * @{
 */

/**
 * Alter the css array.
 *
 * @param array $css
 *   CSS array.
 * @param bool $force_check
 *   TRUE if you want to force check the external source.
 */
function advagg_relocate_css_post_alter(array &$css, $force_check = FALSE) {
    if (!module_exists('advagg') || !advagg_enabled()) {
        return;
    }
    $aggregate_settings = advagg_current_hooks_hash_array();
    // Check external css setting.
    if (empty($aggregate_settings['variables']['advagg_relocate_css'])) {
        return;
    }
    // Get all external css files.
    $urls = _advagg_relocate_get_urls($css, 'css', $aggregate_settings);
    if (empty($urls)) {
        return;
    }
    // Make advagg_save_data() available.
    module_load_include('inc', 'advagg', 'advagg.missing');
    module_load_include('advagg.inc', 'advagg_relocate');
    $responses = advagg_relocate_get_remote_data($urls, 'css', array(), $force_check);
    // Get s3fs no_rewrite_cssjs setting.
    $s3fs_no_rewrite_cssjs = advagg_get_s3fs_config('no_rewrite_cssjs');
    $filenames = array();
    $advagg_relocate_css_ttl = variable_get('advagg_relocate_css_ttl', ADVAGG_RELOCATE_CSS_TTL);
    foreach ($responses as $value) {
        if (!empty($advagg_relocate_css_ttl) && $value->ttl >= $advagg_relocate_css_ttl) {
            continue;
        }
        $rehash = FALSE;
        // Handle @import statements.
        if (strpos($value->data, '@import') !== FALSE) {
            // Handle "local" import statements.
            advagg_relocate_load_stylesheet_local(array(), dirname($value->url) . '/');
            $value->data = preg_replace_callback('%@import\\s*+(?:url\\(\\s*+)?+[\'"]?+(?![a-z]++:|/)([^\'"()\\s]++)[\'"]?+\\s*+\\)?+\\s*+;%i', 'advagg_relocate_load_stylesheet_local', $value->data);
            // Replace external import statements with the contents of them.
            $value->data = preg_replace_callback('%@import\\s*+(?:url\\(\\s*+)?+[\'"]?+((?:http:\\/\\/|https:\\/\\/|\\/\\/)(?:[^\'"()\\s]++))[\'"]?+\\s*+\\)?+\\s*+;%i', 'advagg_relocate_load_stylesheet_external', $value->data);
            $rehash = TRUE;
        }
        // Fix external url references.
        if (strpos($value->data, 'url(') !== FALSE) {
            module_load_include('inc', 'advagg', 'advagg');
            // Set anchor point for local url() statements in the css.
            _advagg_build_css_path(array(), dirname($value->url) . '/');
            // Anchor all paths in the CSS with its base URL, ignoring external,
            // absolute paths, and urls that start with # or %23 (SVG).
            $value->data = preg_replace_callback('%url\\(\\s*+[\'"]?+(?![a-z]++:|/|\\#|\\%23+)([^\'"\\)]++)[\'"]?+\\s*+\\)%i', '_advagg_build_css_path', $value->data);
            $rehash = TRUE;
        }
        if ($rehash) {
            $value->hash = drupal_hash_base64($value->data);
        }
        // Save remote data.
        list($full_filename, $errors, $saved) = _advagg_relocate_save_remote_asset($value->options['filename'], $value->data, $value->local_cache, $value->hash);
        if (!empty($errors)) {
            continue;
        }
        // Replace remote data with local data.
        $relative_path = advagg_get_relative_path($full_filename);
        $key = $urls[$value->options['filename']];
        $css = advagg_relocate_key_rename($css, array(
            $relative_path => $key,
        ));
        $css[$relative_path]['pre_relocate_data'] = $css[$relative_path]['data'];
        $css[$relative_path]['data'] = $relative_path;
        $css[$relative_path]['type'] = 'file';
        if (defined('ADVAGG_MOD_CSS_PREPROCESS') && variable_get('advagg_mod_css_preprocess', ADVAGG_MOD_CSS_PREPROCESS) && empty($css[$relative_path]['preprocess_lock'])) {
            $css[$relative_path]['preprocess'] = TRUE;
        }
        // Handle domain prefectch.
        $key_host = parse_url($key, PHP_URL_HOST);
        if (!empty($css[$relative_path]['dns_prefetch'])) {
            foreach ($css[$relative_path]['dns_prefetch'] as $key => $domain_name) {
                if (strpos($domain_name, $key_host) !== FALSE && strpos($value->data, $key_host)) {
                    unset($css[$relative_path]['dns_prefetch'][$key]);
                }
            }
        }
        // List of files that need the cache cleared.
        if ($saved) {
            $filenames[] = !is_null($s3fs_no_rewrite_cssjs) && empty($s3fs_no_rewrite_cssjs) ? $full_filename : $relative_path;
        }
    }
    if (!empty($filenames)) {
        module_load_include('inc', 'advagg');
        module_load_include('cache.inc', 'advagg');
        $files = advagg_get_info_on_files($filenames, TRUE);
        advagg_push_new_changes($files);
    }
}

/**
 * Alter the js array.
 *
 * @param string $key
 *   Key that can be used to lookup the value from the js array.
 * @param array $value
 *   Inner part of the js array.
 * @param array $aggregate_settings
 *   Array of settings.
 *
 * @return array
 *   An array of inline scripts found and locations for them in the file.
 */
function advagg_relocate_js_script_rewrite_list($key, array $value, array $aggregate_settings) {
    $scripts_found = array();
    // Handle analytics.js.
    if (!empty($aggregate_settings['variables']['advagg_relocate_js_ga_local'])) {
        $start = strpos($value['data'], '(function(i,s,o,g,r,a,m){i["GoogleAnalyticsObject"]=r;i[r]=i[r]||function(){(i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date()');
        $middle = strpos($value['data'], '})(window,document,"script",', $start);
        $end = strpos($value['data'], ',"ga");ga("create",', $middle);
        // Found the GA code.
        if ($start !== FALSE && $middle !== FALSE && $end !== FALSE) {
            $scripts_found['analytics.js'] = array(
                $key,
                $start,
                $middle,
                $end,
            );
        }
    }
    // Handle piwik.js.
    if (!empty($aggregate_settings['variables']['advagg_relocate_js_piwik_local'])) {
        $start = strpos($value['data'], 'var _paq');
        $middle = strpos($value['data'], '_paq.push(["setTrackerUrl"', $start);
        // Skip if not the paq code.
        if ($start !== FALSE && $middle !== FALSE) {
            $scripts_found['piwik.js'] = array(
                $key,
                $start,
                $middle,
            );
        }
    }
    // Handle gtm.js.
    if (!empty($aggregate_settings['variables']['advagg_relocate_js_gtm_local'])) {
        $start = strpos($value['data'], '(function(w,d,s,l,i){');
        $middle = strpos($value['data'], 'var f=d.getElementsByTagName(s)[0]', $start);
        $end = strpos($value['data'], '})(window,document,', $middle);
        // Skip if not the GTM code.
        if ($start !== FALSE && $middle !== FALSE && $end !== FALSE) {
            $scripts_found['gtm.js'] = array(
                $key,
                $start,
                $middle,
                $end,
            );
        }
    }
    // Handle fbds.js.
    if (!empty($aggregate_settings['variables']['advagg_relocate_js_fbds_local'])) {
        $start = strpos($value['data'], 'var _fbq');
        $middle = strpos($value['data'], '(!_fbq.loaded)', $start);
        $end = strpos($value['data'], 's.parentNode.insertBefore(fbds', $middle);
        // Skip if not the fbds code.
        if ($start !== FALSE && $middle !== FALSE && $end !== FALSE) {
            $scripts_found['fbds.js'] = array(
                $key,
                $start,
                $middle,
                $end,
            );
        }
    }
    // Handle fbevents.js.
    if (!empty($aggregate_settings['variables']['advagg_relocate_js_fbevents_local'])) {
        $end = strpos($value['data'], 'connect.facebook.net/en_US/fbevents.js');
        // Skip if not the fbevents code.
        if ($end !== FALSE) {
            // Get middle of string.
            $matches = array();
            preg_match('/fbq\\s*=\\s*function\\(\\)/', $value['data'], $matches, PREG_OFFSET_CAPTURE);
            if (!empty($matches[0][1])) {
                $middle = $matches[0][1];
                // Get start of string.
                $matches = array();
                preg_match('/\\!\\s*function\\(f,b,e,v,n,t,s\\)/', $value['data'], $matches, PREG_OFFSET_CAPTURE);
                if (isset($matches[0][1])) {
                    $start = $matches[0][1];
                    if ($middle - $start <= 90) {
                        $scripts_found['fbevents.js'] = array(
                            $key,
                            $start,
                            $middle,
                            $end,
                        );
                    }
                }
            }
        }
    }
    // Handle perfectaudience.js.
    if (!empty($aggregate_settings['variables']['advagg_relocate_js_perfectaudience_local'])) {
        $matches = array();
        preg_match('/window\\._pa\\s*=\\s*window._pa\\s*\\|\\|\\s*\\{\\s*\\}\\s*;/', $value['data'], $matches, PREG_OFFSET_CAPTURE);
        if (!empty($matches[0][1])) {
            $start = $matches[0][1];
            $middle = strpos($value['data'], '//tag.perfectaudience.com/serve/', $start);
            $end = strpos($value['data'], 's.parentNode.insertBefore(pa, s);', $middle);
            // Add if perfectaudience code.
            if ($start !== FALSE && $middle !== FALSE && $end !== FALSE) {
                $scripts_found['perfectaudience.js'] = array(
                    $key,
                    $start,
                    $middle,
                    $end,
                );
            }
        }
        // Handle twitter uwt.js.
        if (!empty($aggregate_settings['variables']['advagg_relocate_js_twitter_uwt_local'])) {
            $start = strpos($value['data'], '!function(e,t,n,s,u,a){e.twq||');
            $middle = strpos($value['data'], '//static.ads-twitter.com/uwt.js', $start);
            $end = strpos($value['data'], "a.parentNode.insertBefore(u,a))}(window,document,'script');", $middle);
            // Add in twitter uwt.js code.
            if ($start !== FALSE && $middle !== FALSE && $end !== FALSE) {
                $scripts_found['uwt.js'] = array(
                    $key,
                    $start,
                    $middle,
                    $end,
                );
            }
        }
        // Handle linkedin insight.js.
        if (!empty($aggregate_settings['variables']['advagg_relocate_js_linkedin_insight_local'])) {
            $start = strpos($value['data'], '_linkedin_data_partner_id');
            $middle = strpos($value['data'], '//snap.licdn.com/li.lms-analytics/insight.min.js', $start);
            $end = strpos($value['data'], "s.parentNode.insertBefore(b, s)", $middle);
            // Add in linkedin insight.js code.
            if ($start !== FALSE && $middle !== FALSE && $end !== FALSE) {
                $scripts_found['linkedin_insight.js'] = array(
                    $key,
                    $start,
                    $middle,
                    $end,
                );
            }
        }
    }
    return $scripts_found;
}

/**
 * Add external.
 *
 * @param array $js
 *   JS array.
 * @param array $scripts_found
 *   An array of inline scripts found and locations for them in the file.
 */
function advagg_relocate_js_script_rewrite(array &$js, array $scripts_found) {
    // Move inline code to external if possible.
    foreach ($scripts_found as $key_name => $values) {
        if ($key_name === 'analytics.js') {
            list($key, $start, $middle, $end) = $values;
            $value = $js[$key];
            // Get analytics.js URL and add it to the js array.
            $analytics_js_url = substr($value['data'], $middle + 29, $end - strlen($value['data']) - 1);
            $insert = array(
                $analytics_js_url => array(
                    'data' => $analytics_js_url,
                    'type' => 'external',
                    'async' => TRUE,
                    'defer' => TRUE,
                    'noasync' => FALSE,
                    'nodefer' => FALSE,
                ),
            );
            $js = advagg_insert_into_array_at_key($js, $insert, $key);
            $js[$analytics_js_url] += $value;
            // Fix if analytics.js is already local.
            $http_pos = strpos($analytics_js_url, 'http://');
            $https_pos = strpos($analytics_js_url, 'https://');
            $double_slash_pos = strpos($analytics_js_url, '//');
            if ($http_pos !== 0 && $https_pos !== 0 && $double_slash_pos !== 0) {
                $js[$analytics_js_url]['type'] = 'file';
            }
            // Shorten function arguments.
            $value['data'] = substr($value['data'], 0, $middle + 27) . substr($value['data'], $end);
            // Strip loader string.
            $value['data'] = substr($value['data'], 0, $start + 132) . substr($value['data'], $middle);
            // Shorten function parameters.
            $value['data'] = str_replace('function(i,s,o,g,r,a,m){i["GoogleAnalyticsObject"]', 'function(i,s,o,r){i["GoogleAnalyticsObject"]', $value['data']);
            $js[$key]['pre_relocate_data'] = $js[$key]['data'];
            $js[$key]['data'] = $value['data'];
            // Pin to header as the js expects ga to be there.
            $js[$key]['scope'] = 'header';
            $js[$key]['scope_lock'] = TRUE;
            // Handle ga("require", ...) calls for external scripts to be loaded.
            $matches = array();
            preg_match_all('/ga\\([\'"]require[\'"],\\s*[\'"][a-zA-Z0-9_ ]*[\'"],\\s*[\'"](.*?)[\'"]\\)/', $value['data'], $matches, PREG_SET_ORDER);
            foreach ($matches as $match) {
                // Remove inline js loader code.
                $start = strpos($js[$key]['data'], $match[0]);
                if ($start === FALSE) {
                    continue;
                }
                $strlen = strlen($match[0]);
                $js[$key]['data'] = substr($js[$key]['data'], 0, $start) . substr($js[$key]['data'], $start + $strlen);
                // Add script to the drupal js array.
                $url = '//www.google-analytics.com/plugins/ua/' . $match[1];
                $insert = array(
                    $url => array(
                        'data' => $url,
                        'type' => 'external',
                        'async' => TRUE,
                        'defer' => TRUE,
                        'noasync' => FALSE,
                        'nodefer' => FALSE,
                    ),
                );
                $js = advagg_insert_into_array_at_key($js, $insert, $analytics_js_url);
                $js[$url] += $value;
            }
        }
        if ($key_name === 'piwik.js') {
            list($key, $start, $middle) = $values;
            $value = $js[$key];
            // Get URL.
            $url = variable_get('matomo_url_http', '');
            if ($GLOBALS['is_https']) {
                // Use HTTPS.
                $url = variable_get('matomo_url_https', '');
            }
            if (is_callable('_matomo_cache') && variable_get('matomo_cache', 0) && ($matomo_cache = _matomo_cache($url . 'piwik.js'))) {
                // Try cache.
                $url = $matomo_cache;
            }
            if (empty($url)) {
                // Extract info from inline script.
                // "https:" == document.location.protocol ? "https://.../piwik/" : "http://.../piwik/".
                $pattern = '/[\'"]https\\:[\'"]\\s*==\\s*document\\.location\\.protocol.*?[\'"](.*?)[\'"]\\s*\\:\\s*[\'"](.*?)[\'"]/';
                preg_match($pattern, $value['data'], $matches);
                if ($GLOBALS['is_https'] && !empty($matches[1])) {
                    $url = $matches[1];
                }
                elseif (empty($GLOBALS['is_https']) && !empty($matches[2])) {
                    $url = $matches[2];
                }
            }
            if (!empty($url)) {
                // Use HTTP.
                // The $url may or may not have "piwik.js" at the end (it has if it came from _matomo_cache call above, otherwise not). Add if needed.
                $url = check_url($url);
                if (basename($url) != 'piwik.js') {
                    $url = $url . 'piwik.js';
                }
            }
            // Final checks.
            if (!empty($url)) {
                $scope = variable_get('matomo_js_scope', $value['scope']);
                $url = advagg_convert_abs_to_rel($url, TRUE);
                $type = 'file';
                if (advagg_is_external($url)) {
                    $parsed = parse_url($url);
                    if (strpos($parsed['path'], $GLOBALS['base_path']) === 0) {
                        $path = substr($parsed['path'], strlen($GLOBALS['base_path']));
                        if (file_exists($path)) {
                            $url = $path;
                        }
                        else {
                            $type = 'external';
                        }
                    }
                    else {
                        $type = 'external';
                    }
                }
                // Add to js array.
                $insert = array(
                    $url => array(
                        'scope' => $scope,
                        'data' => $url,
                        'type' => $type,
                        'async' => TRUE,
                        'defer' => TRUE,
                        'noasync' => FALSE,
                        'nodefer' => FALSE,
                    ),
                );
                $js = advagg_insert_into_array_at_key($js, $insert, $key);
                $matches = array();
                // s.parentNode.insertBefore(g,s);.
                $pattern = '/\\,?\\s*[\\w]{1,2}\\.parentNode\\.insertBefore\\(\\s*[\\w]{1,2}\\s*,\\s*[\\w]{1,2}\\s*\\)\\s*\\;*/';
                preg_match($pattern, $value['data'], $matches);
                // Strip loader string.
                $value['data'] = str_replace($matches[0], '', $value['data']);
                $js[$key]['pre_relocate_data'] = $js[$key]['data'];
                $js[$key]['data'] = $value['data'];
                // Pin to header as the js expects paq to be loaded before the file.
                $js[$key]['scope'] = 'header';
                $js[$key]['scope_lock'] = TRUE;
                $js[$key]['weight'] = -50000;
                $js[$key]['movable'] = FALSE;
            }
        }
        if ($key_name === 'gtm.js') {
            list($key, $start, $middle, $end) = $values;
            $value = $js[$key];
            // Get URL for script.
            $matches_a = array();
            preg_match('/j.src\\s*=\\s*[\'"](.*?);/', $value['data'], $matches_a);
            $matches_b = array();
            preg_match('/\\}\\)\\(window,document,[\'"]script[\'"],[\'"](.*?)[\'"],[\'"](.*?)[\'"]\\);/', $value['data'], $matches_b);
            if (empty($matches_a[1]) || empty($matches_b[1])) {
                continue;
            }
            if ($matches_b[1] !== 'dataLayer') {
                $matches_b[1] = '&l=' . $matches_b[1];
            }
            else {
                $matches_b[1] = '';
            }
            $gtm_url = trim(str_replace(array(
                "'+i",
                "+dl+'",
                "+dl",
            ), array(
                $matches_b[2],
                $matches_b[1],
                $matches_b[1],
            ), $matches_a[1]), "'");
            // Add script to the drupal js array.
            $insert = array(
                $gtm_url => array(
                    'data' => $gtm_url,
                    'type' => 'external',
                    'async' => TRUE,
                    'defer' => TRUE,
                    'noasync' => FALSE,
                    'nodefer' => FALSE,
                ),
            );
            $js = advagg_insert_into_array_at_key($js, $insert, $key);
            $js[$gtm_url] += $value;
            // Shorten function arguments.
            $args = explode(',', substr($value['data'], $end + 3, -2));
            $value['data'] = substr($value['data'], 0, $end + 9) . ",{$args[3]});";
            // Strip loader string.
            $value['data'] = substr($value['data'], 0, $middle) . substr($value['data'], $end);
            // Shorten function parameters.
            $value['data'] = str_replace('(function(w,d,s,l,i){', '(function(w,l){', $value['data']);
            // Add back.
            $js[$key]['pre_relocate_data'] = $js[$key]['data'];
            $js[$key]['data'] = $value['data'];
            // Pin to header as the js expects dataLayer to be there.
            $js[$key]['scope'] = 'header';
            $js[$key]['scope_lock'] = TRUE;
        }
        if ($key_name === 'fbds.js') {
            list($key, $start, $middle, $end) = $values;
            $value = $js[$key];
            // Get URL for script.
            $matches = array();
            preg_match('/fbds.src\\s*=\\s*[\'"](.*?)[\'"];/', $value['data'], $matches);
            if (empty($matches[1])) {
                continue;
            }
            $url = trim($matches[1]);
            // Add script to the drupal js array.
            $insert = array(
                $url => array(
                    'data' => $url,
                    'type' => 'external',
                    'async' => TRUE,
                    'defer' => TRUE,
                    'noasync' => FALSE,
                    'nodefer' => FALSE,
                ),
            );
            $js = advagg_insert_into_array_at_key($js, $insert, $key);
            $js[$url] += $value;
            // Strip loader string.
            $matches = array();
            preg_match('/if\\s*\\(!_fbq.loaded\\)\\s*\\{/', $value['data'], $matches, PREG_OFFSET_CAPTURE);
            $new_js = substr($value['data'], 0, $matches[0][1]);
            // Set loaded TRUE.
            $matches = array();
            preg_match('/_fbq.loaded\\s*=\\s*true/', $value['data'], $matches, PREG_OFFSET_CAPTURE);
            $new_js .= $matches[0][0] . ';';
            // Get the rest of the JS string.
            $end = strpos($value['data'], '}', $matches[0][1]);
            $new_js .= trim(substr($value['data'], $end + 1));
            $js[$key]['pre_relocate_data'] = $js[$key]['data'];
            $js[$key]['data'] = $new_js;
            // Pin to header as the js expects _fbq to be there.
            $js[$key]['scope'] = 'header';
            $js[$key]['scope_lock'] = TRUE;
        }
        if ($key_name === 'fbevents.js') {
            list($key, $start, $middle, $end) = $values;
            $value = $js[$key];
            // Add script to the drupal js array.
            $url = 'https://connect.facebook.net/en_US/fbevents.js';
            $insert = array(
                $url => array(
                    'data' => $url,
                    'type' => 'external',
                ),
            );
            $js = advagg_insert_into_array_at_key($js, $insert, $key);
            $js[$url] += $value;
            $before = substr($value['data'], 0, $start);
            $after = ltrim(substr($value['data'], $end + 40), ';');
            // Get all facebook pixel ids.
            $fb_ids = array_filter(array_map('trim', explode("\n", variable_get('advagg_relocate_js_fbevents_local_ids', ADVAGG_RELOCATE_JS_FBEVENTS_LOCAL_IDS))));
            $matches = array();
            preg_match('/fbq\\(\\s*[\'"]init[\'"]\\s*,\\s*[\'"](\\d+)[\'"]\\s*\\)/', $value['data'], $matches);
            if (!empty($matches[1])) {
                $fb_ids[] = $matches[1];
            }
            $fb_ids = array_filter($fb_ids);
            // Update in place the ids if any others were found inline.
            $GLOBALS['conf']['advagg_relocate_js_fbevents_local_ids'] = implode("\n", $fb_ids);
            // Get scripts before and after; replace middle of script.
            $new_js = $before . "!function(f,b,e,v,n,t,s){if(f.fbq)return;n=f.fbq=function(){n.callMethod?n.callMethod.apply(n,arguments):n.queue.push(arguments)};if(!f._fbq)f._fbq=n;n.push=n;n.loaded=!0;n.version='2.0';n.queue=[];t=b.createElement(e);t.async=!0;t.src=v;s=b.getElementsByTagName(e)[0]}(window,document,'script','//connect.facebook.net/en_US/fbevents.js');" . $after;
            $js[$key]['pre_relocate_data'] = $js[$key]['data'];
            $js[$key]['data'] = $new_js;
            // Pin to header as the js expects fbq to be there.
            $js[$key]['scope'] = 'header';
            $js[$key]['scope_lock'] = TRUE;
        }
        if ($key_name === 'perfectaudience.js') {
            list($key, $start, $middle, $end) = $values;
            $value = $js[$key];
            // Reindex.
            $matches = array();
            preg_match('/window\\._pa\\s*=\\s*window._pa\\s*\\|\\|\\s*\\{\\s*\\}\\s*;/', $value['data'], $matches, PREG_OFFSET_CAPTURE);
            if (!empty($matches[0][1])) {
                $start = $matches[0][1];
                $middle = strpos($value['data'], '//tag.perfectaudience.com/serve/', $start);
                $end = strpos($value['data'], 's.parentNode.insertBefore(pa, s);', $middle);
                $substr = substr($value['data'], $start, $end - $start + 35);
                $matches = array();
                preg_match('/\\.src\\s*=\\s*[\'"](\\/\\/tag.perfectaudience.com\\/serve\\/.*\\.js)[\'"]/', $substr, $matches);
                if (!empty($matches[1])) {
                    $url = $matches[1];
                    // Add script to the drupal js array.
                    $insert = array(
                        $url => array(
                            'data' => $url,
                            'type' => 'external',
                            'async' => TRUE,
                            'defer' => TRUE,
                            'noasync' => FALSE,
                            'nodefer' => FALSE,
                        ),
                    );
                    $js = advagg_insert_into_array_at_key($js, $insert, $key);
                    $js[$url] += $value;
                    // s.parentNode.insertBefore(pa, s);.
                    $pattern = '/\\,?\\s*[\\w]{1,2}\\.parentNode\\.insertBefore\\(\\s*[\\w]{1,2}\\s*,\\s*[\\w]{1,2}\\s*\\)\\s*\\;*/';
                    // Strip loader string.
                    $new_substr = preg_replace($pattern, '', $substr);
                    $js[$key]['data'] = str_replace($substr, $new_substr, $value['data']);
                }
            }
        }
        if ($key_name === 'uwt.js') {
            list($key, $start, $middle, $end) = $values;
            $value = $js[$key];
            $url = '//static.ads-twitter.com/uwt.js';
            // Add script to the drupal js array.
            $insert = array(
                $url => array(
                    'data' => $url,
                    'type' => 'external',
                    'scope_lock' => FALSE,
                    'scope' => 'footer',
                ),
            );
            $js = advagg_insert_into_array_at_key($js, $insert, $key);
            $js[$url] += $value;
            // Reindex.
            $start = strpos($value['data'], '!function(e,t,n,s,u,a){e.twq||');
            $middle = strpos($value['data'], '//static.ads-twitter.com/uwt.js', $start);
            $end = strpos($value['data'], "a.parentNode.insertBefore(u,a))}(window,document,'script');", $middle);
            $substr = substr($value['data'], $start, $end - $start + 61);
            // a.parentNode.insertBefore(u,a).
            $pattern = '/\\,?\\s*[\\w]{1,2}\\.parentNode\\.insertBefore\\(\\s*[\\w]{1,2}\\s*,\\s*[\\w]{1,2}\\s*\\)\\s*\\;*/';
            // Strip loader string.
            $new_substr = preg_replace($pattern, '', $substr);
            $js[$key]['data'] = str_replace($substr, $new_substr, $value['data']);
        }
        if ($key_name === 'linkedin_insight.js') {
            list($key, $start, $middle, $end) = $values;
            $value = $js[$key];
            $url = 'https://snap.licdn.com/li.lms-analytics/insight.min.js';
            // Add script to the drupal js array.
            $insert = array(
                $url => array(
                    'data' => $url,
                    'type' => 'external',
                    'async' => TRUE,
                    'defer' => TRUE,
                    'noasync' => FALSE,
                    'nodefer' => FALSE,
                ),
            );
            $js = advagg_insert_into_array_at_key($js, $insert, $key);
            $js[$url] += $value;
            $start = strpos($value['data'], '_linkedin_data_partner_id');
            $middle = strpos($value['data'], '//snap.licdn.com/li.lms-analytics/insight.min.js', $start);
            $end = strpos($value['data'], "s.parentNode.insertBefore(b, s)", $middle);
            $substr = substr($value['data'], $start, $end - $start + 35);
            // a.parentNode.insertBefore(u,a).
            $pattern = '/\\,?\\s*[\\w]{1,2}\\.parentNode\\.insertBefore\\(\\s*[\\w]{1,2}\\s*,\\s*[\\w]{1,2}\\s*\\)\\s*\\;*/';
            // Strip loader string.
            $new_substr = preg_replace($pattern, '', $substr);
            $js[$key]['data'] = str_replace($substr, $new_substr, $value['data']);
        }
    }
}

/**
 * Alter the js array.
 *
 * @param array $js
 *   JS array.
 * @param bool $force_check
 *   TRUE if you want to force check the external source.
 */
function advagg_relocate_js_post_alter(array &$js, $force_check = FALSE) {
    if (!module_exists('advagg') || !advagg_enabled()) {
        return;
    }
    // Check external js setting.
    $aggregate_settings = advagg_current_hooks_hash_array();
    if (empty($aggregate_settings['variables']['advagg_relocate_js'])) {
        return;
    }
    // Look for inline scrtips that add external js via inline code.
    $scripts_found = array();
    module_load_include('inc', 'advagg', 'advagg');
    $temp_inserts = array();
    foreach ($js as $key => $value) {
        if ($value['type'] === 'inline') {
            $scripts_found += advagg_relocate_js_script_rewrite_list($key, $value, $aggregate_settings);
        }
        if ($value['type'] === 'file') {
            $info = advagg_get_info_on_file($key);
            if (!empty($info['advagg_relocate'])) {
                // Get the file contents.
                $file_contents = (string) @advagg_file_get_contents($info['data']);
                if (empty($file_contents)) {
                    continue;
                }
                $value['data'] = $file_contents;
                $temp_inserts[$key] = array(
                    "advagg_relocate:{$key}" => $value,
                );
                $scripts_found += advagg_relocate_js_script_rewrite_list("advagg_relocate:{$key}", $value, $aggregate_settings);
            }
        }
    }
    // Add in file as inline so replacement works.
    if (!empty($temp_inserts)) {
        foreach ($temp_inserts as $key => $value) {
            $js = advagg_insert_into_array_at_key($js, $value, $key);
        }
    }
    // Rewrite inline scrtips and add external references to js array.
    advagg_relocate_js_script_rewrite($js, $scripts_found);
    // Remove temp inline code.
    if (!empty($temp_inserts)) {
        foreach ($temp_inserts as $value) {
            reset($value);
            $key = key($value);
            unset($js[$key]);
        }
    }
    // Get all external js files.
    $urls = _advagg_relocate_get_urls($js, 'js', $aggregate_settings);
    if (empty($urls)) {
        return;
    }
    // Make advagg_save_data() available.
    module_load_include('inc', 'advagg', 'advagg.missing');
    module_load_include('advagg.inc', 'advagg_relocate');
    $responses = advagg_relocate_get_remote_data($urls, 'js', array(), $force_check);
    // Get s3fs no_rewrite_cssjs setting.
    $s3fs_no_rewrite_cssjs = advagg_get_s3fs_config('no_rewrite_cssjs');
    $filenames = array();
    $advagg_relocate_js_ttl = variable_get('advagg_relocate_js_ttl', ADVAGG_RELOCATE_JS_TTL);
    foreach ($responses as $value) {
        // If the external file has a longer TTL than 1 week, do not cache.
        if (!empty($advagg_relocate_js_ttl) && $value->ttl >= $advagg_relocate_js_ttl) {
            continue;
        }
        list($full_filename, $errors, $saved) = _advagg_relocate_save_remote_asset($value->options['filename'], $value->data, $value->local_cache, $value->hash);
        if (!empty($errors)) {
            watchdog('advagg-relocate', 'Write failed. Errors: <pre><tt>@errors</tt></pre>', array(
                '@errors' => $errors,
            ));
            continue;
        }
        // Replace remote data with local data.
        $relative_path = advagg_get_relative_path($full_filename);
        $key = $urls[$value->options['filename']];
        $js = advagg_relocate_key_rename($js, array(
            $relative_path => $key,
        ));
        $js[$relative_path]['pre_relocate_data'] = $js[$relative_path]['data'];
        $js[$relative_path]['data'] = $relative_path;
        $js[$relative_path]['type'] = 'file';
        if (defined('ADVAGG_MOD_JS_PREPROCESS') && variable_get('advagg_mod_js_preprocess', ADVAGG_MOD_JS_PREPROCESS) && empty($js[$relative_path]['preprocess_lock'])) {
            $js[$relative_path]['preprocess'] = TRUE;
        }
        // Check for any .write( statements in the JS code.
        if (strpos($value->data, '.write(') !== FALSE) {
            if (!isset($js[$relative_path]['noasync']) || $js[$relative_path]['noasync'] !== FALSE || (!isset($js[$relative_path]['nodefer']) || $js[$relative_path]['nodefer'] !== FALSE)) {
                $js[$relative_path]['async'] = FALSE;
                $js[$relative_path]['defer'] = FALSE;
                $js[$relative_path]['noasync'] = TRUE;
                $js[$relative_path]['nodefer'] = TRUE;
            }
        }
        // Handle domain prefectch.
        $parse = @parse_url($key);
        $key_host = '';
        if (!empty($parse['host'])) {
            $key_host = $parse['host'];
        }
        if (!empty($key_host) && !empty($js[$relative_path]['dns_prefetch'])) {
            foreach ($js[$relative_path]['dns_prefetch'] as $key => $domain_name) {
                if (strpos($domain_name, $key_host) !== FALSE && strpos($value->data, $key_host)) {
                    unset($js[$relative_path]['dns_prefetch'][$key]);
                }
            }
        }
        // Make sure the external reference has been removed.
        $schemes = array(
            '//',
            'http',
            'https',
        );
        foreach ($schemes as $scheme) {
            $parse['scheme'] = $scheme;
            $key = advagg_glue_url($parse);
            if (isset($js[$key])) {
                unset($js[$key]);
            }
        }
        // List of files that need the cache cleared.
        if ($saved) {
            $filenames[] = !is_null($s3fs_no_rewrite_cssjs) && empty($s3fs_no_rewrite_cssjs) ? $full_filename : $relative_path;
        }
    }
    if (!empty($filenames)) {
        module_load_include('inc', 'advagg');
        module_load_include('cache.inc', 'advagg');
        $files = advagg_get_info_on_files($filenames, TRUE);
        advagg_push_new_changes($files);
    }
}

/**
 * Implements hook_advagg_current_hooks_hash_array_alter().
 */
function advagg_relocate_advagg_current_hooks_hash_array_alter(&$aggregate_settings) {
    $aggregate_settings['variables']['advagg_relocate_css_inline_import'] = variable_get('advagg_relocate_css_inline_import', ADVAGG_RELOCATE_CSS_INLINE_IMPORT);
    $defaults = array(
        'woff2' => 'woff2',
        'woff' => 'woff',
        'ttf' => 'ttf',
    );
    $aggregate_settings['variables']['advagg_relocate_css_inline_import_browsers'] = variable_get('advagg_relocate_css_inline_import_browsers', $defaults);
    $aggregate_settings['variables']['advagg_relocate_css_file_settings'] = variable_get('advagg_relocate_css_file_settings', array());
    $aggregate_settings['variables']['advagg_relocate_css_font_domains'] = variable_get('advagg_relocate_css_font_domains', ADVAGG_RELOCATE_CSS_FONT_DOMAINS);
    $types = array(
        'css' => 'CSS',
        'js' => 'JS',
    );
    foreach ($types as $type_lower => $type_upper) {
        $domains_blacklist = array_filter(array_map('trim', explode("\n", variable_get("advagg_relocate_{$type_lower}_domains_blacklist", constant("ADVAGG_RELOCATE_{$type_upper}_DOMAINS_BLACKLIST")))));
        $aggregate_settings['variables']["advagg_relocate_{$type_lower}_domains_blacklist"] = $domains_blacklist;
        $files_blacklist = array_filter(array_map('trim', explode("\n", variable_get("advagg_relocate_{$type_lower}_files_blacklist", constant("ADVAGG_RELOCATE_{$type_upper}_FILES_BLACKLIST")))));
        $aggregate_settings['variables']["advagg_relocate_{$type_lower}_files_blacklist"] = $files_blacklist;
    }
    $aggregate_settings['variables']['advagg_relocate_css_inline_external'] = variable_get('advagg_relocate_css_inline_external', ADVAGG_RELOCATE_CSS_INLINE_EXTERNAL);
    $aggregate_settings['variables']['advagg_relocate_css'] = variable_get('advagg_relocate_css', ADVAGG_RELOCATE_CSS);
    $aggregate_settings['variables']['advagg_relocate_js'] = variable_get('advagg_relocate_js', ADVAGG_RELOCATE_JS);
    $aggregate_settings['variables']['advagg_relocate_js_ga_local'] = variable_get('advagg_relocate_js_ga_local', ADVAGG_RELOCATE_JS_GA_LOCAL);
    $aggregate_settings['variables']['advagg_relocate_js_gtm_local'] = variable_get('advagg_relocate_js_gtm_local', ADVAGG_RELOCATE_JS_GTM_LOCAL);
    $aggregate_settings['variables']['advagg_relocate_js_fbds_local'] = variable_get('advagg_relocate_js_fbds_local', ADVAGG_RELOCATE_JS_FBDS_LOCAL);
    $aggregate_settings['variables']['advagg_relocate_js_fbevents_local'] = variable_get('advagg_relocate_js_fbevents_local', ADVAGG_RELOCATE_JS_FBEVENTS_LOCAL);
    $aggregate_settings['variables']['advagg_relocate_js_piwik_local'] = variable_get('advagg_relocate_js_piwik_local', ADVAGG_RELOCATE_JS_PIWIK_LOCAL);
    $aggregate_settings['variables']['advagg_relocate_js_perfectaudience_local'] = variable_get('advagg_relocate_js_perfectaudience_local', ADVAGG_RELOCATE_JS_PERFECTAUDIENCE_LOCAL);
    $aggregate_settings['variables']['advagg_relocate_js_twitter_uwt_local'] = variable_get('advagg_relocate_js_twitter_uwt_local', ADVAGG_RELOCATE_JS_TWITTER_UWT_LOCAL);
    $aggregate_settings['variables']['advagg_relocate_js_linkedin_insight_local'] = variable_get('advagg_relocate_js_linkedin_insight_local', ADVAGG_RELOCATE_JS_LINKEDIN_INSIGHT_LOCAL);
}

/**
 * @} End of "addtogroup advagg_hooks".
 */

/**
 * Convert local @import statements to external.
 *
 * @param array $matches
 *   Array of matched items from preg_replace_callback().
 * @param string $url
 *   URL of where the original CSS is located.
 *
 * @return string
 *   New import statement.
 */
function advagg_relocate_load_stylesheet_local(array $matches, $url = '') {
    $_url =& drupal_static(__FUNCTION__, '');
    // Store base path for preg_replace_callback.
    if (!empty($url)) {
        $_url = $url;
    }
    // Short circuit if no matches were passed in.
    if (empty($matches)) {
        return '';
    }
    $css_url = $_url . $matches[1];
    return "@import \"{$css_url}\";";
}

/**
 * Convert external @import statements to be local.
 *
 * @param array $matches
 *   Array of matched items from preg_replace_callback().
 *
 * @return string
 *   Contents of the import statement or new import statement.
 */
function advagg_relocate_load_stylesheet_external(array $matches) {
    // Build css array.
    $css = array(
        $matches[1] => array(
            'type' => 'external',
            'data' => $matches[1],
        ),
    );
    // Recursively pull in imported fonts.
    advagg_relocate_css_alter($css);
    // Remove '../' segments where possible.
    $values = reset($css);
    if ($values['type'] !== 'inline') {
        $last = '';
        $url = $values['data'];
        while ($url != $last) {
            $last = $url;
            $url = preg_replace('`(^|/)(?!\\.\\./)([^/]+)/\\.\\./`', '$1', $url);
        }
        // Build css array.
        $css = array(
            $url => array(
                'type' => $values['type'],
                'data' => $url,
            ),
        );
    }
    // Recursively pull in external references.
    advagg_relocate_css_post_alter($css);
    $values = reset($css);
    $key = key($css);
    if ($values['type'] === 'inline') {
        return "/* Contents of {$key} */\n{$values['data']}";
    }
    else {
        if (!advagg_is_external($values['data'])) {
            $dir = variable_get('advagg_relocate_directory', ADVAGG_RELOCATE_DIRECTORY);
            $path = advagg_get_relative_path($dir) . '/';
            $values['data'] = str_replace($path, '', $values['data']);
        }
        return "@import \"{$values['data']}\";";
    }
}

/**
 * Return a filename => url array for external assets.
 *
 * @param array $data
 *   CSS or JS data array.
 * @param string $type
 *   Either css or js.
 * @param array $aggregate_settings
 *   Array of settings.
 *
 * @return array
 *   Array of external assets to be served locally.
 */
function _advagg_relocate_get_urls(array $data, $type, array $aggregate_settings) {
    $domains_blacklist = $aggregate_settings['variables']["advagg_relocate_{$type}_domains_blacklist"];
    $files_blacklist = $aggregate_settings['variables']["advagg_relocate_{$type}_files_blacklist"];
    $urls = array();
    foreach ($data as $key => $value) {
        // Get all external js files.
        if ($value['type'] !== 'external') {
            continue;
        }
        // If no_relocate=TRUE, do not move it to be local.
        if (!empty($value['no_relocate'])) {
            continue;
        }
        if (empty($value['data'])) {
            $value['data'] = $key;
        }
        $host = parse_url($value['data'], PHP_URL_HOST);
        if (!empty($domains_blacklist)) {
            foreach ($domains_blacklist as $domain) {
                if ($domain === $host) {
                    continue 2;
                }
            }
        }
        if (!empty($files_blacklist)) {
            foreach ($files_blacklist as $file) {
                if (strpos($file, $host) !== FALSE) {
                    continue 2;
                }
            }
        }
        // Encode the URL into a filename. Force HTTPS.
        $filename = advagg_url_to_filename(advagg_force_https_path($value['data']));
        // Make sure it ends with .css or .js.
        if (stripos(strrev($filename), strrev($type)) !== 0) {
            $filename .= ".{$type}";
        }
        $urls[$filename] = $key;
    }
    return $urls;
}

/**
 * Verifies that the external CSS file is from a domain we allow for inlining.
 *
 * @param string $url
 *   The full URL of the css file.
 * @param array $aggregate_settings
 *   Array of settings.
 *
 * @return bool
 *   TRUE if the URL can be inlined.
 */
function advagg_relocate_check_domain_of_font_url($url, array $aggregate_settings) {
    // Bail if the host or path and query string are empty.
    $parse = @parse_url($url);
    if (empty($parse) || empty($parse['host']) || empty($parse['path']) && empty($parse['query'])) {
        return FALSE;
    }
    // Bail if the host doesn't match one of the listed domains.
    if (!isset($aggregate_settings['variables']['advagg_relocate_css_font_domains'])) {
        $aggregate_settings['variables']['advagg_relocate_css_font_domains'] = variable_get('advagg_relocate_css_font_domains', ADVAGG_RELOCATE_CSS_FONT_DOMAINS);
    }
    if (strpos($aggregate_settings['variables']['advagg_relocate_css_font_domains'], $parse['host']) === FALSE) {
        return FALSE;
    }
    return TRUE;
}

/**
 * Replace JS key with another key.
 *
 * @param array $input
 *   Input array.
 * @param array $replacements
 *   Key value pair; key is the new key, value is the old key.
 */
function advagg_relocate_key_rename(array $input, array $replacements) {
    $output = array();
    foreach ($input as $k => $v) {
        $replacement_key = array_search($k, $replacements, TRUE);
        if ($replacement_key !== FALSE) {
            $output[$replacement_key] = $v;
        }
        else {
            $output[$k] = $v;
        }
    }
    return $output;
}

/**
 * Perform a cache flush of the advagg relocate module.
 */
function advagg_relocate_flush_cache_button() {
    cache_clear_all('advagg_relocate_', 'cache_advagg_info', TRUE);
    drupal_set_message(t('AdvAgg Relocate Cache Cleared.'));
}