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<?php
/**
* Piwik - free/libre analytics platform
*
* @link https://matomo.org
* @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
*/
namespace Piwik\Tracker;
use Piwik\Common;
use Piwik\DbHelper;
use Piwik\Option;
use Piwik\Piwik;
use Piwik\Plugins\CustomVariables\CustomVariables;
use Piwik\Plugins\SitesManager\API as APISitesManager;
use Piwik\SettingsPiwik;
use Piwik\View;
/**
* Generates the Javascript code to be inserted on every page of the website to track.
*/
class TrackerCodeGenerator
{
/**
* whether matomo.js|php should be forced over piwik.js|php
* @var bool
*/
private $shouldForceMatomoEndpoint = false;
public function forceMatomoEndpoint()
{
$this->shouldForceMatomoEndpoint = true;
}
/**
* @param int $idSite
* @param string $piwikUrl http://path/to/piwik/site/
* @param bool $mergeSubdomains
* @param bool $groupPageTitlesByDomain
* @param bool $mergeAliasUrls
* @param array $visitorCustomVariables
* @param array $pageCustomVariables
* @param string $customCampaignNameQueryParam
* @param string $customCampaignKeywordParam
* @param bool $doNotTrack
* @param bool $disableCookies
* @param bool $trackNoScript
* @return string Javascript code.
*/
public function generate(
$idSite,
$piwikUrl,
$mergeSubdomains = false,
$groupPageTitlesByDomain = false,
$mergeAliasUrls = false,
$visitorCustomVariables = null,
$pageCustomVariables = null,
$customCampaignNameQueryParam = null,
$customCampaignKeywordParam = null,
$doNotTrack = false,
$disableCookies = false,
$trackNoScript = false,
$crossDomain = false
) {
// changes made to this code should be mirrored in plugins/CoreAdminHome/javascripts/jsTrackingGenerator.js var generateJsCode
if (substr($piwikUrl, 0, 4) !== 'http') {
$piwikUrl = 'http://' . $piwikUrl;
}
preg_match('~^(http|https)://(.*)$~D', $piwikUrl, $matches);
$piwikUrl = rtrim(@$matches[2], "/");
// Build optional parameters to be added to text
$options = '';
$optionsBeforeTrackerUrl = '';
if ($groupPageTitlesByDomain) {
$options .= ' _paq.push(["setDocumentTitle", document.domain + "/" + document.title]);' . "\n";
}
if ($crossDomain) {
// When enabling cross domain, we also need to call `setDomains`
$mergeAliasUrls = true;
}
if ($mergeSubdomains || $mergeAliasUrls) {
$options .= $this->getJavascriptTagOptions($idSite, $mergeSubdomains, $mergeAliasUrls);
}
if ($crossDomain) {
$options .= ' _paq.push(["enableCrossDomainLinking"]);' . "\n";
}
$maxCustomVars = CustomVariables::getNumUsableCustomVariables();
if ($visitorCustomVariables && count($visitorCustomVariables) > 0) {
$options .= ' // you can set up to ' . $maxCustomVars . ' custom variables for each visitor' . "\n";
$index = 1;
foreach ($visitorCustomVariables as $visitorCustomVariable) {
if (empty($visitorCustomVariable)) {
continue;
}
$options .= sprintf(
' _paq.push(["setCustomVariable", %d, %s, %s, "visit"]);%s',
$index++,
json_encode($visitorCustomVariable[0]),
json_encode($visitorCustomVariable[1]),
"\n"
);
}
}
if ($pageCustomVariables && count($pageCustomVariables) > 0) {
$options .= ' // you can set up to ' . $maxCustomVars . ' custom variables for each action (page view, download, click, site search)' . "\n";
$index = 1;
foreach ($pageCustomVariables as $pageCustomVariable) {
if (empty($pageCustomVariable)) {
continue;
}
$options .= sprintf(
' _paq.push(["setCustomVariable", %d, %s, %s, "page"]);%s',
$index++,
json_encode($pageCustomVariable[0]),
json_encode($pageCustomVariable[1]),
"\n"
);
}
}
if ($customCampaignNameQueryParam) {
$options .= ' _paq.push(["setCampaignNameKey", '
. json_encode($customCampaignNameQueryParam) . ']);' . "\n";
}
if ($customCampaignKeywordParam) {
$options .= ' _paq.push(["setCampaignKeywordKey", '
. json_encode($customCampaignKeywordParam) . ']);' . "\n";
}
if ($doNotTrack) {
$options .= ' _paq.push(["setDoNotTrack", true]);' . "\n";
}
if ($disableCookies) {
$options .= ' _paq.push(["disableCookies"]);' . "\n";
}
$codeImpl = array(
'idSite' => $idSite,
// TODO why sanitizeInputValue() and not json_encode?
'piwikUrl' => Common::sanitizeInputValue($piwikUrl),
'options' => $options,
'optionsBeforeTrackerUrl' => $optionsBeforeTrackerUrl,
'protocol' => '//',
'loadAsync' => true,
'trackNoScript' => $trackNoScript,
'matomoJsFilename' => $this->getJsTrackerEndpoint(),
'matomoPhpFilename' => $this->getPhpTrackerEndpoint(),
);
if (SettingsPiwik::isHttpsForced()) {
$codeImpl['protocol'] = 'https://';
}
$parameters = compact('mergeSubdomains', 'groupPageTitlesByDomain', 'mergeAliasUrls', 'visitorCustomVariables',
'pageCustomVariables', 'customCampaignNameQueryParam', 'customCampaignKeywordParam',
'doNotTrack');
/**
* Triggered when generating JavaScript tracking code server side. Plugins can use
* this event to customise the JavaScript tracking code that is displayed to the
* user.
*
* @param array &$codeImpl An array containing snippets of code that the event handler
* can modify. Will contain the following elements:
*
* - **idSite**: The ID of the site being tracked.
* - **piwikUrl**: The tracker URL to use.
* - **options**: A string of JavaScript code that customises
* the JavaScript tracker.
* - **optionsBeforeTrackerUrl**: A string of Javascript code that customises
* the JavaScript tracker inside of anonymous function before
* adding setTrackerUrl into paq.
* - **protocol**: Piwik url protocol.
* - **loadAsync**: boolean whether piwik.js should be loaded syncronous or asynchronous
*
* The **httpsPiwikUrl** element can be set if the HTTPS
* domain is different from the normal domain.
* @param array $parameters The parameters supplied to `TrackerCodeGenerator::generate()`.
*/
Piwik::postEvent('Piwik.getJavascriptCode', array(&$codeImpl, $parameters));
$setTrackerUrl = 'var u="' . $codeImpl['protocol'] . '{$piwikUrl}/";';
if (!empty($codeImpl['httpsPiwikUrl'])) {
$setTrackerUrl = 'var u=((document.location.protocol === "https:") ? "https://{$httpsPiwikUrl}/" : "http://{$piwikUrl}/");';
$codeImpl['httpsPiwikUrl'] = rtrim($codeImpl['httpsPiwikUrl'], "/");
}
$codeImpl = array('setTrackerUrl' => htmlentities($setTrackerUrl, ENT_COMPAT | ENT_HTML401, 'UTF-8')) + $codeImpl;
$view = new View('@Morpheus/javascriptCode');
$view->disableCacheBuster();
$view->loadAsync = $codeImpl['loadAsync'];
$view->trackNoScript = $codeImpl['trackNoScript'];
$jsCode = $view->render();
$jsCode = htmlentities($jsCode, ENT_COMPAT | ENT_HTML401, 'UTF-8');
foreach ($codeImpl as $keyToReplace => $replaceWith) {
$jsCode = str_replace('{$' . $keyToReplace . '}', $replaceWith, $jsCode);
}
return $jsCode;
}
public function getJsTrackerEndpoint()
{
$name = 'matomo.js';
if ($this->shouldPreferPiwikEndpoint()) {
$name = 'piwik.js';
}
return $name;
}
public function getPhpTrackerEndpoint()
{
$name = 'matomo.php';
if ($this->shouldPreferPiwikEndpoint()) {
$name = 'piwik.php';
}
return $name;
}
public function shouldPreferPiwikEndpoint()
{
if ($this->shouldForceMatomoEndpoint) {
return false;
}
// only since 3.7.0 we use the default matomo.js|php... for all other installs we need to keep BC
return DbHelper::wasMatomoInstalledBeforeVersion('3.7.0-b1');
}
private function getJavascriptTagOptions($idSite, $mergeSubdomains, $mergeAliasUrls)
{
try {
$websiteUrls = APISitesManager::getInstance()->getSiteUrlsFromId($idSite);
} catch (\Exception $e) {
return '';
}
// We need to parse_url to isolate hosts
$websiteHosts = array();
$firstHost = null;
foreach ($websiteUrls as $site_url) {
if (empty($site_url)) {
continue;
}
$referrerParsed = parse_url($site_url);
if (!isset($firstHost) && isset($referrerParsed['host'])) {
$firstHost = $referrerParsed['host'];
}
if (isset($referrerParsed['host'])) {
$url = $referrerParsed['host'];
} else {
$url = '';
}
if (!empty($referrerParsed['path'])) {
$url .= $referrerParsed['path'];
}
if (!empty($url)) {
$websiteHosts[] = $url;
}
}
$options = '';
if ($mergeSubdomains && !empty($firstHost)) {
$options .= ' _paq.push(["setCookieDomain", "*.' . $firstHost . '"]);' . "\n";
}
if ($mergeAliasUrls && !empty($websiteHosts)) {
$urls = '["*.' . implode('","*.', $websiteHosts) . '"]';
$options .= ' _paq.push(["setDomains", ' . $urls . ']);' . "\n";
}
return $options;
}
/**
* When including the JS tracking code in a mailto link, we need to strip the surrounding HTML tags off. This
* ensures consistent behaviour between mail clients that render the mailto body as plain text (as in the
* spec), and those which try to render it as HTML and therefore hide the tags.
* @param string $jsTrackingCode JS tracking code as returned from the generate() function.
* @return string
*/
public static function stripTags($jsTrackingCode)
{
// Strip off open and close <script> tag and comments so that JS will be displayed in ALL mail clients
return trim(strip_tags(html_entity_decode($jsTrackingCode)));
}
}
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