617 lines
23 KiB
Plaintext
617 lines
23 KiB
Plaintext
<?php
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/*
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* @file
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* Drupal Module: GoogleAnalytics
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* Adds the required Javascript to the bottom of all your Drupal pages
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* to allow tracking by the Google Analytics statistics package.
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*
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* @author: Alexander Hass <http://drupal.org/user/85918>
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*/
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define('GOOGLEANALYTICS_TRACKFILES_EXTENSIONS', '7z|aac|arc|arj|asf|asx|avi|bin|csv|doc|exe|flv|gif|gz|gzip|hqx|jar|jpe?g|js|mp(2|3|4|e?g)|mov(ie)?|msi|msp|pdf|phps|png|ppt|qtm?|ra(m|r)?|sea|sit|tar|tgz|torrent|txt|wav|wma|wmv|wpd|xls|xml|z|zip');
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// Remove tracking from all administrative pages, see http://drupal.org/node/34970.
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define('GOOGLEANALYTICS_PAGES', "admin\nadmin/*\nbatch\nnode/add*\nnode/*/*\nuser/*/*");
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/**
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* Implements hook_help().
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*/
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function googleanalytics_help($path, $arg) {
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switch ($path) {
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case 'admin/config/system/googleanalytics':
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return t('<a href="@ga_url">Google Analytics</a> is a free (registration required) website traffic and marketing effectiveness service.', array('@ga_url' => 'http://www.google.com/analytics/'));
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}
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}
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/**
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* Implements hook_theme().
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*/
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function googleanalytics_theme() {
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return array(
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'googleanalytics_admin_custom_var_table' => array(
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'render element' => 'form',
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),
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);
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}
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/**
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* Implements hook_permission().
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*/
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function googleanalytics_permission() {
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return array(
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'administer google analytics' => array(
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'title' => t('Administer Google Analytics'),
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'description' => t('Perform maintenance tasks for Google Analytics.'),
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),
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'opt-in or out of tracking' => array(
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'title' => t('Opt-in or out of tracking'),
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'description' => t('Allow users to decide if tracking code will be added to pages or not.'),
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),
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'use PHP for tracking visibility' => array(
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'title' => t('Use PHP for tracking visibility'),
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'description' => t('Enter PHP code in the field for tracking visibility settings.'),
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'restrict access' => TRUE,
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),
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);
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}
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/**
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* Implements hook_menu().
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*/
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function googleanalytics_menu() {
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$items['admin/config/system/googleanalytics'] = array(
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'title' => 'Google Analytics',
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'description' => 'Configure tracking behavior to get insights into your website traffic and marketing effectiveness.',
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'page callback' => 'drupal_get_form',
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'page arguments' => array('googleanalytics_admin_settings_form'),
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'access arguments' => array('administer google analytics'),
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'type' => MENU_NORMAL_ITEM,
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'file' => 'googleanalytics.admin.inc',
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);
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return $items;
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}
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/**
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* Implements hook_page_alter() to insert JavaScript to the appropriate scope/region of the page.
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*/
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function googleanalytics_page_alter(&$page) {
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global $user;
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$id = variable_get('googleanalytics_account', '');
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// Get page status code for visibility filtering.
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$status = drupal_get_http_header('Status');
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$trackable_status_codes = array(
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'403 Forbidden',
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'404 Not Found',
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);
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// 1. Check if the GA account number has a value.
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// 2. Track page views based on visibility value.
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// 3. Check if we should track the currently active user's role.
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// 4. Ignore pages visibility filter for 404 or 403 status codes.
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if (!empty($id) && (_googleanalytics_visibility_pages() || in_array($status, $trackable_status_codes)) && _googleanalytics_visibility_user($user)) {
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// We allow different scopes. Default to 'header' but allow user to override if they really need to.
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$scope = variable_get('googleanalytics_js_scope', 'header');
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if (variable_get('googleanalytics_trackadsense', FALSE)) {
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// Custom tracking. Prepend before all other JavaScript.
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drupal_add_js('window.google_analytics_uacct = ' . drupal_json_encode($id) . ';', array('type' => 'inline', 'group' => JS_LIBRARY-1));
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}
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// Add link tracking.
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$link_settings = array();
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if ($track_outbound = variable_get('googleanalytics_trackoutbound', 1)) {
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$link_settings['trackOutbound'] = $track_outbound;
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}
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if ($track_mailto = variable_get('googleanalytics_trackmailto', 1)) {
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$link_settings['trackMailto'] = $track_mailto;
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}
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if (($track_download = variable_get('googleanalytics_trackfiles', 1)) && ($trackfiles_extensions = variable_get('googleanalytics_trackfiles_extensions', GOOGLEANALYTICS_TRACKFILES_EXTENSIONS))) {
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$link_settings['trackDownload'] = $track_download;
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$link_settings['trackDownloadExtensions'] = $trackfiles_extensions;
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}
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if ($track_domain_mode = variable_get('googleanalytics_domain_mode', 0)) {
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$link_settings['trackDomainMode'] = $track_domain_mode;
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}
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if ($track_cross_domains = variable_get('googleanalytics_cross_domains', '')) {
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$link_settings['trackCrossDomains'] = preg_split('/(\r\n?|\n)/', $track_cross_domains);
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}
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if (!empty($link_settings)) {
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drupal_add_js(array('googleanalytics' => $link_settings), 'setting');
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drupal_add_js(drupal_get_path('module', 'googleanalytics') . '/googleanalytics.js');
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}
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// Add messages tracking.
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$message_events = '';
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if ($message_types = variable_get('googleanalytics_trackmessages', array())) {
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$message_types = array_values(array_filter($message_types));
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$status_heading = array(
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'status' => t('Status message'),
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'warning' => t('Warning message'),
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'error' => t('Error message'),
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);
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foreach (drupal_get_messages(NULL, FALSE) as $type => $messages) {
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// Track only the selected message types.
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if (in_array($type, $message_types)) {
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foreach ($messages as $message) {
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$message_events .= '_gaq.push(["_trackEvent", ' . drupal_json_encode(t('Messages')) . ', ' . drupal_json_encode($status_heading[$type]) . ', ' . drupal_json_encode(strip_tags($message)) . ']);';
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}
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}
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}
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}
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// Site search tracking support.
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$url_custom = '';
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if (module_exists('search') && variable_get('googleanalytics_site_search', FALSE) && arg(0) == 'search' && $keys = googleanalytics_search_get_keys()) {
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$url_custom = '(window.googleanalytics_search_results) ? ' . drupal_json_encode(url('search/' . arg(1), array('query' => array('search' => $keys)))) . ' : ' . drupal_json_encode(url('search/' . arg(1), array('query' => array('search' => 'no-results:' . $keys, 'cat' => 'no-results'))));
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}
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// If this node is a translation of another node, pass the original
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// node instead.
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if (module_exists('translation') && variable_get('googleanalytics_translation_set', 0)) {
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// Check we have a node object, it supports translation, and its
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// translated node ID (tnid) doesn't match its own node ID.
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$node = menu_get_object();
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if ($node && translation_supported_type($node->type) && !empty($node->tnid) && ($node->tnid != $node->nid)) {
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$source_node = node_load($node->tnid);
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$languages = language_list();
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$url_custom = drupal_json_encode(url('node/' . $source_node->nid, array('language' => $languages[$source_node->language])));
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}
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}
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// Track access denied (403) and file not found (404) pages.
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if ($status == '403 Forbidden') {
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// See http://www.google.com/support/analytics/bin/answer.py?answer=86927
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$url_custom = '"/403.html?page=" + document.location.pathname + document.location.search + "&from=" + document.referrer';
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}
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elseif ($status == '404 Not Found') {
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$url_custom = '"/404.html?page=" + document.location.pathname + document.location.search + "&from=" + document.referrer';
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}
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// Add any custom code snippets if specified.
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$codesnippet_before = variable_get('googleanalytics_codesnippet_before', '');
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$codesnippet_after = variable_get('googleanalytics_codesnippet_after', '');
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// Add custom variables.
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$googleanalytics_custom_vars = variable_get('googleanalytics_custom_var', array());
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$custom_var = '';
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for ($i = 1; $i < 6; $i++) {
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$custom_var_name = !empty($googleanalytics_custom_vars['slots'][$i]['name']) ? $googleanalytics_custom_vars['slots'][$i]['name'] : '';
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if (!empty($custom_var_name)) {
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$custom_var_value = !empty($googleanalytics_custom_vars['slots'][$i]['value']) ? $googleanalytics_custom_vars['slots'][$i]['value'] : '';
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$custom_var_scope = !empty($googleanalytics_custom_vars['slots'][$i]['scope']) ? $googleanalytics_custom_vars['slots'][$i]['scope'] : 3;
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$types = array();
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$node = menu_get_object();
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if (is_object($node)) {
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$types += array('node' => $node);
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}
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$custom_var_name = token_replace($custom_var_name, $types, array('clear' => TRUE));
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$custom_var_value = token_replace($custom_var_value, $types, array('clear' => TRUE));
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// Suppress empty custom names and/or variables.
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if (!drupal_strlen(trim($custom_var_name)) || !drupal_strlen(trim($custom_var_value))) {
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continue;
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}
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// The length of the string used for the 'name' and the length of the
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// string used for the 'value' must not exceed 128 bytes after url encoding.
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$name_length = drupal_strlen(rawurlencode($custom_var_name));
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$tmp_value = rawurlencode($custom_var_value);
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$value_length = drupal_strlen($tmp_value);
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if ($name_length + $value_length > 128) {
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// Trim value and remove fragments of url encoding.
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$tmp_value = rtrim(substr($tmp_value, 0, 127 - $name_length), '%0..9A..F');
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$custom_var_value = urldecode($tmp_value);
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}
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$custom_var_name = drupal_json_encode($custom_var_name);
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$custom_var_value = drupal_json_encode($custom_var_value);
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$custom_var .= "_gaq.push(['_setCustomVar', $i, $custom_var_name, $custom_var_value, $custom_var_scope]);";
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}
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}
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// Build tracker code.
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$script = 'var _gaq = _gaq || [];';
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$script .= '_gaq.push(["_setAccount", ' . drupal_json_encode($id) . ']);';
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if (variable_get('googleanalytics_tracker_anonymizeip', 0)) {
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// FIXME: The Google API is currently broken and "_gat._anonymizeIp" is only
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// a workaround until "_anonymizeIp" has been implemented/fixed.
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$script .= '_gaq.push(["_gat._anonymizeIp"]);';
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}
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// Domain tracking type.
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global $cookie_domain;
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$domain_mode = variable_get('googleanalytics_domain_mode', 0);
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// Per RFC 2109, cookie domains must contain at least one dot other than the
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// first. For hosts such as 'localhost' or IP Addresses we don't set a cookie domain.
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if ($domain_mode == 1 && count(explode('.', $cookie_domain)) > 2 && !is_numeric(str_replace('.', '', $cookie_domain))) {
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$script .= '_gaq.push(["_setDomainName", ' . drupal_json_encode($cookie_domain) . ']);';
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}
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elseif ($domain_mode == 2) {
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$script .= '_gaq.push(["_setDomainName", "none"]);';
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$script .= '_gaq.push(["_setAllowLinker", true]);';
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}
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if (!empty($custom_var)) {
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$script .= $custom_var;
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}
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if (!empty($codesnippet_before)) {
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$script .= $codesnippet_before;
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}
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if (empty($url_custom)) {
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$script .= '_gaq.push(["_trackPageview"]);';
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}
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else {
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$script .= '_gaq.push(["_trackPageview", ' . $url_custom . ']);';
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}
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if (!empty($message_events)) {
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$script .= $message_events;
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}
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if (!empty($codesnippet_after)) {
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$script .= $codesnippet_after;
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}
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$script .= '(function() {';
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$script .= 'var ga = document.createElement("script");';
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$script .= 'ga.type = "text/javascript";';
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$script .= 'ga.async = true;';
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// Which version of the tracking library should be used?
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if ($trackdoubleclick = variable_get('googleanalytics_trackdoubleclick', FALSE)) {
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$library_tracker_url = 'stats.g.doubleclick.net/dc.js';
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$library_cache_url = 'http://' . $library_tracker_url;
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}
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else {
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$library_tracker_url = '.google-analytics.com/ga.js';
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$library_cache_url = 'http://www' . $library_tracker_url;
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}
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// Should a local cached copy of ga.js be used?
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if (variable_get('googleanalytics_cache', 0) && $url = _googleanalytics_cache($library_cache_url)) {
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// A dummy query-string is added to filenames, to gain control over
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// browser-caching. The string changes on every update or full cache
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// flush, forcing browsers to load a new copy of the files, as the
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// URL changed.
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$query_string = '?' . variable_get('css_js_query_string', '0');
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$script .= 'ga.src = "' . $url . $query_string . '";';
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}
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else {
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// Library paths do not follow the same naming convention.
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if ($trackdoubleclick) {
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$script .= 'ga.src = ("https:" == document.location.protocol ? "https://" : "http://") + "' . $library_tracker_url . '";';
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}
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else {
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$script .= 'ga.src = ("https:" == document.location.protocol ? "https://ssl" : "http://www") + "' . $library_tracker_url . '";';
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}
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}
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$script .= 'var s = document.getElementsByTagName("script")[0];';
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$script .= 's.parentNode.insertBefore(ga, s);';
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$script .= '})();';
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drupal_add_js($script, array('scope' => $scope, 'type' => 'inline'));
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}
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}
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/**
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* Implements hook_field_extra_fields().
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*/
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function googleanalytics_field_extra_fields() {
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$extra['user']['user']['form']['googleanalytics'] = array(
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'label' => t('Google Analytics configuration'),
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'description' => t('Google Analytics module form element.'),
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'weight' => 3,
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);
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return $extra;
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}
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/**
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* Implements hook_form_FORM_ID_alter().
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*
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* Allow users to decide if tracking code will be added to pages or not.
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*/
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function googleanalytics_form_user_profile_form_alter(&$form, &$form_state) {
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$account = $form['#user'];
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$category = $form['#user_category'];
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if ($category == 'account' && user_access('opt-in or out of tracking') && ($custom = variable_get('googleanalytics_custom', 0)) != 0 && _googleanalytics_visibility_roles($account)) {
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$form['googleanalytics'] = array(
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'#type' => 'fieldset',
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'#title' => t('Google Analytics configuration'),
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'#weight' => 3,
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'#collapsible' => TRUE,
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'#tree' => TRUE
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);
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switch ($custom) {
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case 1:
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$description = t('Users are tracked by default, but you are able to opt out.');
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break;
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case 2:
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$description = t('Users are <em>not</em> tracked by default, but you are able to opt in.');
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break;
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}
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// Disable tracking for visitors who have opted out from tracking via DNT (Do-Not-Track) header.
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$disabled = FALSE;
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if (variable_get('googleanalytics_privacy_donottrack', 1) && !empty($_SERVER['HTTP_DNT'])) {
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$disabled = TRUE;
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// Override settings value.
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$account->data['googleanalytics']['custom'] = FALSE;
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$description .= '<span class="admin-disabled">';
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$description .= ' ' . t('You have opted out from tracking via browser privacy settings.');
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$description .= '</span>';
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}
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$form['googleanalytics']['custom'] = array(
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'#type' => 'checkbox',
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'#title' => t('Enable user tracking'),
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'#description' => $description,
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'#default_value' => isset($account->data['googleanalytics']['custom']) ? $account->data['googleanalytics']['custom'] : ($custom == 1),
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'#disabled' => $disabled,
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);
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return $form;
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}
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}
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/**
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* Implements hook_user_presave().
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*/
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function googleanalytics_user_presave(&$edit, $account, $category) {
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if (isset($edit['googleanalytics']['custom'])) {
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$edit['data']['googleanalytics']['custom'] = $edit['googleanalytics']['custom'];
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}
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}
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/**
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* Implements hook_cron().
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*/
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function googleanalytics_cron() {
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// Regenerate the tracking code file every day.
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if (REQUEST_TIME - variable_get('googleanalytics_last_cache', 0) >= 86400 && variable_get('googleanalytics_cache', 0)) {
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// Which version of the tracking library should be used?
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if (variable_get('googleanalytics_trackdoubleclick', FALSE)) {
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_googleanalytics_cache('http://stats.g.doubleclick.net/dc.js', TRUE);
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}
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else {
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_googleanalytics_cache('http://www.google-analytics.com/ga.js', TRUE);
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}
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variable_set('googleanalytics_last_cache', REQUEST_TIME);
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}
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}
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/**
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* Implements hook_preprocess_search_results().
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*
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* Collects and adds the number of search results to the head.
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*/
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function googleanalytics_preprocess_search_results(&$variables) {
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// There is no search result $variable available that hold the number of items
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// found. But the pager item mumber can tell the number of search results.
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global $pager_total_items;
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drupal_add_js('window.googleanalytics_search_results = ' . intval($pager_total_items[0]) . ';', array('type' => 'inline', 'group' => JS_LIBRARY-1));
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}
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/**
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* Helper function for grabbing search keys. Function is missing in D7.
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*
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* http://api.drupal.org/api/function/search_get_keys/6
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*/
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function googleanalytics_search_get_keys() {
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static $return;
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if (!isset($return)) {
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// Extract keys as remainder of path
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// Note: support old GET format of searches for existing links.
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$path = explode('/', $_GET['q'], 3);
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$keys = empty($_REQUEST['keys']) ? '' : $_REQUEST['keys'];
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$return = count($path) == 3 ? $path[2] : $keys;
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}
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return $return;
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}
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/**
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* Download/Synchronize/Cache tracking code file locally.
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*
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* @param $location
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* The full URL to the external javascript file.
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* @param $sync_cached_file
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* Synchronize tracking code and update if remote file have changed.
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* @return mixed
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* The path to the local javascript file on success, boolean FALSE on failure.
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*/
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function _googleanalytics_cache($location, $sync_cached_file = FALSE) {
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$path = 'public://googleanalytics';
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$file_destination = $path . '/' . basename($location);
|
|
|
|
if (!file_exists($file_destination) || $sync_cached_file) {
|
|
// Download the latest tracking code.
|
|
$result = drupal_http_request($location);
|
|
|
|
if ($result->code == 200) {
|
|
if (file_exists($file_destination)) {
|
|
// Synchronize tracking code and and replace local file if outdated.
|
|
$data_hash_local = drupal_hash_base64(file_get_contents($file_destination));
|
|
$data_hash_remote = drupal_hash_base64($result->data);
|
|
// Check that the files directory is writable.
|
|
if ($data_hash_local != $data_hash_remote && file_prepare_directory($path)) {
|
|
// Save updated tracking code file to disk.
|
|
file_unmanaged_save_data($result->data, $file_destination, FILE_EXISTS_REPLACE);
|
|
watchdog('googleanalytics', 'Locally cached tracking code file has been updated.', array(), WATCHDOG_INFO);
|
|
|
|
// Change query-strings on css/js files to enforce reload for all users.
|
|
_drupal_flush_css_js();
|
|
}
|
|
}
|
|
else {
|
|
// Check that the files directory is writable.
|
|
if (file_prepare_directory($path, FILE_CREATE_DIRECTORY)) {
|
|
// There is no need to flush JS here as core refreshes JS caches
|
|
// automatically, if new files are added.
|
|
file_unmanaged_save_data($result->data, $file_destination, FILE_EXISTS_REPLACE);
|
|
watchdog('googleanalytics', 'Locally cached tracking code file has been saved.', array(), WATCHDOG_INFO);
|
|
|
|
// Return the local JS file path.
|
|
return file_create_url($file_destination);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else {
|
|
// Return the local JS file path.
|
|
return file_create_url($file_destination);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Delete cached files and directory.
|
|
*/
|
|
function googleanalytics_clear_js_cache() {
|
|
$path = 'public://googleanalytics';
|
|
if (file_prepare_directory($path)) {
|
|
file_scan_directory($path, '/.*/', array('callback' => 'file_unmanaged_delete'));
|
|
drupal_rmdir($path);
|
|
|
|
// Change query-strings on css/js files to enforce reload for all users.
|
|
_drupal_flush_css_js();
|
|
|
|
watchdog('googleanalytics', 'Local cache has been purged.', array(), WATCHDOG_INFO);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Tracking visibility check for an user object.
|
|
*
|
|
* @param $account
|
|
* A user object containing an array of roles to check.
|
|
* @return boolean
|
|
* A decision on if the current user is being tracked by Google Analytics.
|
|
*/
|
|
function _googleanalytics_visibility_user($account) {
|
|
|
|
$enabled = FALSE;
|
|
|
|
// Is current user a member of a role that should be tracked?
|
|
if (_googleanalytics_visibility_header($account) && _googleanalytics_visibility_roles($account)) {
|
|
|
|
// Use the user's block visibility setting, if necessary.
|
|
if (($custom = variable_get('googleanalytics_custom', 0)) != 0) {
|
|
if ($account->uid && isset($account->data['googleanalytics']['custom'])) {
|
|
$enabled = $account->data['googleanalytics']['custom'];
|
|
}
|
|
else {
|
|
$enabled = ($custom == 1);
|
|
}
|
|
}
|
|
else {
|
|
$enabled = TRUE;
|
|
}
|
|
|
|
}
|
|
|
|
return $enabled;
|
|
}
|
|
|
|
/**
|
|
* Based on visibility setting this function returns TRUE if GA code should
|
|
* be added for the current role and otherwise FALSE.
|
|
*/
|
|
function _googleanalytics_visibility_roles($account) {
|
|
|
|
$visibility = variable_get('googleanalytics_visibility_roles', 0);
|
|
$enabled = $visibility;
|
|
$roles = variable_get('googleanalytics_roles', array());
|
|
|
|
if (array_sum($roles) > 0) {
|
|
// One or more roles are selected.
|
|
foreach (array_keys($account->roles) as $rid) {
|
|
// Is the current user a member of one of these roles?
|
|
if (isset($roles[$rid]) && $rid == $roles[$rid]) {
|
|
// Current user is a member of a role that should be tracked/excluded from tracking.
|
|
$enabled = !$visibility;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
else {
|
|
// No role is selected for tracking, therefore all roles should be tracked.
|
|
$enabled = TRUE;
|
|
}
|
|
|
|
return $enabled;
|
|
}
|
|
|
|
/**
|
|
* Based on visibility setting this function returns TRUE if GA code should
|
|
* be added to the current page and otherwise FALSE.
|
|
*/
|
|
function _googleanalytics_visibility_pages() {
|
|
static $page_match;
|
|
|
|
// Cache visibility result if function is called more than once.
|
|
if (!isset($page_match)) {
|
|
|
|
$visibility = variable_get('googleanalytics_visibility_pages', 0);
|
|
$setting_pages = variable_get('googleanalytics_pages', GOOGLEANALYTICS_PAGES);
|
|
|
|
// Match path if necessary.
|
|
if (!empty($setting_pages)) {
|
|
// Convert path to lowercase. This allows comparison of the same path
|
|
// with different case. Ex: /Page, /page, /PAGE.
|
|
$pages = drupal_strtolower($setting_pages);
|
|
if ($visibility < 2) {
|
|
// Convert the Drupal path to lowercase
|
|
$path = drupal_strtolower(drupal_get_path_alias($_GET['q']));
|
|
// Compare the lowercase internal and lowercase path alias (if any).
|
|
$page_match = drupal_match_path($path, $pages);
|
|
if ($path != $_GET['q']) {
|
|
$page_match = $page_match || drupal_match_path($_GET['q'], $pages);
|
|
}
|
|
// When $visibility has a value of 0, the tracking code is displayed on
|
|
// all pages except those listed in $pages. When set to 1, it
|
|
// is displayed only on those pages listed in $pages.
|
|
$page_match = !($visibility xor $page_match);
|
|
}
|
|
elseif (module_exists('php')) {
|
|
$page_match = php_eval($setting_pages);
|
|
}
|
|
else {
|
|
$page_match = FALSE;
|
|
}
|
|
}
|
|
else {
|
|
$page_match = TRUE;
|
|
}
|
|
|
|
}
|
|
return $page_match;
|
|
}
|
|
|
|
/**
|
|
* Based on headers send by clients this function returns TRUE if GA code should
|
|
* be added to the current page and otherwise FALSE.
|
|
*/
|
|
function _googleanalytics_visibility_header($account) {
|
|
|
|
if (($account->uid || variable_get('cache', 0) == 0) && variable_get('googleanalytics_privacy_donottrack', 1) && !empty($_SERVER['HTTP_DNT'])) {
|
|
// Disable tracking if caching is disabled or a visitors is logged in and
|
|
// have opted out from tracking via DNT (Do-Not-Track) header.
|
|
return FALSE;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|