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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\Plugins\Referrers\Columns;
use Piwik\Common;
use Piwik\Piwik;
use Piwik\Plugin\Dimension\VisitDimension;
use Piwik\Plugins\Referrers\SearchEngine as SearchEngineDetection;
use Piwik\Plugins\Referrers\Social as SocialNetworkDetection;
use Piwik\Plugins\SitesManager\SiteUrls;
use Piwik\Tracker\Cache;
use Piwik\Tracker\PageUrl;
use Piwik\Tracker\Request;
use Piwik\Tracker\Visitor;
use Piwik\Tracker\Action;
use Piwik\UrlHelper;
abstract class Base extends VisitDimension
{
// @see detect*() referrer methods
protected $typeReferrerAnalyzed;
protected $nameReferrerAnalyzed;
protected $keywordReferrerAnalyzed;
protected $referrerHost;
protected $referrerUrl;
protected $referrerUrlParse;
protected $currentUrlParse;
protected $idsite;
// Used to prefix when a adsense referrer is detected
const LABEL_PREFIX_ADWORDS_KEYWORD = '(adwords) ';
const LABEL_ADWORDS_NAME = 'AdWords';
/**
* Returns an array containing the following information:
* - referer_type
* - direct -- absence of referrer URL OR referrer URL has the same host
* - site -- based on the referrer URL
* - search_engine -- based on the referrer URL
* - campaign -- based on campaign URL parameter
*
* - referer_name
* - ()
* - piwik.net -- site host name
* - google.fr -- search engine host name
* - adwords-search -- campaign name
*
* - referer_keyword
* - ()
* - ()
* - my keyword
* - my paid keyword
* - ()
* - ()
*
* - referer_url : the same for all the referrer types
*
* @param string $referrerUrl must be URL Encoded
* @param string $currentUrl
* @param int $idSite
* @return array
*/
protected function getReferrerInformation($referrerUrl, $currentUrl, $idSite, Request $request, Visitor $visitor)
{
$this->idsite = $idSite;
// default values for the referer_* fields
$referrerUrl = Common::unsanitizeInputValue($referrerUrl);
if (!empty($referrerUrl)
&& !UrlHelper::isLookLikeUrl($referrerUrl)
) {
$referrerUrl = '';
}
$currentUrl = PageUrl::cleanupUrl($currentUrl);
$this->referrerUrl = $referrerUrl;
$this->referrerUrlParse = @parse_url($this->referrerUrl);
$this->currentUrlParse = @parse_url($currentUrl);
$this->typeReferrerAnalyzed = Common::REFERRER_TYPE_DIRECT_ENTRY;
$this->nameReferrerAnalyzed = '';
$this->keywordReferrerAnalyzed = '';
$this->referrerHost = '';
if (isset($this->referrerUrlParse['host'])) {
$this->referrerHost = $this->referrerUrlParse['host'];
}
$referrerDetected = $this->detectReferrerCampaign($request, $visitor);
if (!$referrerDetected) {
if ($this->detectReferrerDirectEntry($request)
|| $this->detectReferrerSearchEngine()
|| $this->detectReferrerSocialNetwork()
) {
$referrerDetected = true;
}
}
if (!$referrerDetected && !empty($this->referrerHost)) {
$this->typeReferrerAnalyzed = Common::REFERRER_TYPE_WEBSITE;
$this->nameReferrerAnalyzed = Common::mb_strtolower($this->referrerHost);
$urlsByHost = $this->getCachedUrlsByHostAndIdSite();
$directEntry = new SiteUrls();
$directEntry->addRequestUrlToSiteUrls($urlsByHost, $request);
$path = $directEntry->getPathMatchingUrl($this->referrerUrlParse, $urlsByHost);
if (!empty($path) && $path !== '/') {
$this->nameReferrerAnalyzed .= rtrim($path, '/');
}
}
$referrerInformation = array(
'referer_type' => $this->typeReferrerAnalyzed,
'referer_name' => $this->nameReferrerAnalyzed,
'referer_keyword' => $this->keywordReferrerAnalyzed,
'referer_url' => $this->referrerUrl,
);
if (!empty($referrerInformation['referer_name'])) {
$referrerInformation['referer_name'] = $this->truncateReferrerName($referrerInformation['referer_name']);
}
if (!empty($referrerInformation['referer_keyword'])) {
$referrerInformation['referer_keyword'] = $this->truncateReferrerKeyword($referrerInformation['referer_keyword']);
}
return $referrerInformation;
}
protected function getReferrerInformationFromRequest(Request $request, Visitor $visitor)
{
$referrerUrl = $request->getParam('urlref');
$currentUrl = $request->getParam('url');
return $this->getReferrerInformation($referrerUrl, $currentUrl, $request->getIdSite(), $request, $visitor);
}
/**
* Search engine detection
* @return bool
*/
protected function detectReferrerSearchEngine()
{
$cache = \Piwik\Cache::getTransientCache();
$cacheKey = 'cachedReferrerSearchEngine';
$cachedReferrerSearchEngine = [];
if ($cache->contains($cacheKey)) {
$cachedReferrerSearchEngine = $cache->fetch($cacheKey);
}
if (isset($cachedReferrerSearchEngine[$this->referrerUrl])) {
$searchEngineInformation = $cachedReferrerSearchEngine[$this->referrerUrl];
} else {
$searchEngineInformation = SearchEngineDetection::getInstance()->extractInformationFromUrl($this->referrerUrl);
/**
* Triggered when detecting the search engine of a referrer URL.
*
* Plugins can use this event to provide custom search engine detection
* logic.
*
* @param array &$searchEngineInformation An array with the following information:
*
* - **name**: The search engine name.
* - **keywords**: The search keywords used.
*
* This parameter is initialized to the results
* of Piwik's default search engine detection
* logic.
* @param string referrerUrl The referrer URL from the tracking request.
*/
Piwik::postEvent('Tracker.detectReferrerSearchEngine', array(&$searchEngineInformation, $this->referrerUrl));
$cachedReferrerSearchEngine[$this->referrerUrl] = $searchEngineInformation;
$cache->save($cacheKey, $cachedReferrerSearchEngine);
}
if ($searchEngineInformation === false) {
return false;
}
$this->typeReferrerAnalyzed = Common::REFERRER_TYPE_SEARCH_ENGINE;
$this->nameReferrerAnalyzed = $searchEngineInformation['name'];
$this->keywordReferrerAnalyzed = $searchEngineInformation['keywords'];
return true;
}
/**
* Social network detection
* @return bool
*/
protected function detectReferrerSocialNetwork()
{
$cache = \Piwik\Cache::getTransientCache();
$cacheKey = 'cachedReferrerSocialNetworks';
$cachedReferrerSocialNetworks = [];
if ($cache->contains($cacheKey)) {
$cachedReferrerSocialNetworks = $cache->fetch($cacheKey);
}
$socialNetworkName = false;
if (isset($cachedReferrerSocialNetworks[$this->referrerUrl])) {
$socialNetworkName = $cachedReferrerSocialNetworks[$this->referrerUrl];
} else {
if (SocialNetworkDetection::getInstance()->isSocialUrl($this->referrerUrl)) {
$socialNetworkName = SocialNetworkDetection::getInstance()->getSocialNetworkFromDomain($this->referrerUrl);
}
/**
* Triggered when detecting the social network of a referrer URL.
*
* Plugins can use this event to provide custom social network detection
* logic.
*
* @param string|false &$socialNetworkName Name of the social network, or false if none detected
*
* This parameter is initialized to the results
* of Matomo's default social network detection
* logic.
* @param string referrerUrl The referrer URL from the tracking request.
*/
Piwik::postEvent('Tracker.detectReferrerSocialNetwork', array(&$socialNetworkName, $this->referrerUrl));
$cachedReferrerSocialNetworks[$this->referrerUrl] = $socialNetworkName;
$cache->save($cacheKey, $cachedReferrerSocialNetworks);
}
if ($socialNetworkName === false) {
return false;
}
$this->typeReferrerAnalyzed = Common::REFERRER_TYPE_SOCIAL_NETWORK;
$this->nameReferrerAnalyzed = $socialNetworkName;
$this->keywordReferrerAnalyzed = '';
return true;
}
/**
* @param string $string
* @return bool
*/
protected function detectCampaignFromString($string)
{
foreach ($this->campaignNames as $campaignNameParameter) {
$campaignName = trim(urldecode(UrlHelper::getParameterFromQueryString($string, $campaignNameParameter)));
if (!empty($campaignName)) {
break;
}
}
if (empty($campaignName)) {
return false;
}
$this->typeReferrerAnalyzed = Common::REFERRER_TYPE_CAMPAIGN;
$this->nameReferrerAnalyzed = $campaignName;
foreach ($this->campaignKeywords as $campaignKeywordParameter) {
$campaignKeyword = UrlHelper::getParameterFromQueryString($string, $campaignKeywordParameter);
if (!empty($campaignKeyword)) {
$this->keywordReferrerAnalyzed = trim(urldecode($campaignKeyword));
break;
}
}
return !empty($this->keywordReferrerAnalyzed);
}
protected function detectReferrerCampaignFromLandingUrl()
{
if (!isset($this->currentUrlParse['query'])
&& !isset($this->currentUrlParse['fragment'])
) {
return false;
}
$campaignParameters = Common::getCampaignParameters();
$this->campaignNames = $campaignParameters[0];
$this->campaignKeywords = $campaignParameters[1];
$found = false;
// 1) Detect campaign from query string
if (isset($this->currentUrlParse['query'])) {
$found = $this->detectCampaignFromString($this->currentUrlParse['query']);
}
// 2) Detect from fragment #hash
if (!$found
&& isset($this->currentUrlParse['fragment'])
) {
$this->detectCampaignFromString($this->currentUrlParse['fragment']);
}
}
protected function detectReferrerCampaignFromTrackerParams(Request $request)
{
$campaignName = $this->getReferrerCampaignQueryParam($request, '_rcn');
if (empty($campaignName)) {
return false;
}
$this->typeReferrerAnalyzed = Common::REFERRER_TYPE_CAMPAIGN;
$this->nameReferrerAnalyzed = $campaignName;
$keyword = $this->getReferrerCampaignQueryParam($request, '_rck');
if (!empty($keyword)) {
$this->keywordReferrerAnalyzed = $keyword;
}
return true;
}
private function getCachedUrlsByHostAndIdSite()
{
$cache = Cache::getCacheGeneral();
if (!empty($cache['allUrlsByHostAndIdSite'])) {
return $cache['allUrlsByHostAndIdSite'];
}
return array();
}
/**
* We have previously tried to detect the campaign variables in the URL
* so at this stage, if the referrer host is the current host,
* or if the referrer host is any of the registered URL for this website,
* it is considered a direct entry
* @return bool
*/
protected function detectReferrerDirectEntry(Request $request)
{
if (empty($this->referrerHost)) {
return false;
}
$urlsByHost = $this->getCachedUrlsByHostAndIdSite();
$directEntry = new SiteUrls();
$directEntry->addRequestUrlToSiteUrls($urlsByHost, $request);
$matchingSites = $directEntry->getIdSitesMatchingUrl($this->referrerUrlParse, $urlsByHost);
if (isset($matchingSites) && is_array($matchingSites) && in_array($this->idsite, $matchingSites)) {
$this->typeReferrerAnalyzed = Common::REFERRER_TYPE_DIRECT_ENTRY;
return true;
} elseif (isset($matchingSites)) {
return false;
}
$site = Cache::getCacheWebsiteAttributes($this->idsite);
$excludeUnknowns = $site['exclude_unknown_urls'];
// fallback logic if the referrer domain is not known to any site to not break BC
if (!$excludeUnknowns && isset($this->currentUrlParse['host'])) {
// this might be actually buggy if first thing tracked is eg an outlink and referrer is from that site
$currentHost = Common::mb_strtolower($this->currentUrlParse['host']);
if ($currentHost == Common::mb_strtolower($this->referrerHost)) {
$this->typeReferrerAnalyzed = Common::REFERRER_TYPE_DIRECT_ENTRY;
return true;
}
}
return false;
}
protected function detectCampaignKeywordFromReferrerUrl()
{
if (!empty($this->nameReferrerAnalyzed)
&& !empty($this->keywordReferrerAnalyzed)) {
// keyword is already set, we skip
return true;
}
// Set the Campaign keyword to the keyword found in the Referrer URL if any
if (!empty($this->nameReferrerAnalyzed)) {
$referrerUrlInfo = SearchEngineDetection::getInstance()->extractInformationFromUrl($this->referrerUrl);
if (!empty($referrerUrlInfo['keywords'])) {
$this->keywordReferrerAnalyzed = $referrerUrlInfo['keywords'];
}
}
// Set the keyword, to the hostname found, in a Adsense Referrer URL '&url=' parameter
if (empty($this->keywordReferrerAnalyzed)
&& !empty($this->referrerUrlParse['query'])
&& !empty($this->referrerHost)
&& (strpos($this->referrerHost, 'googleads') !== false || strpos($this->referrerHost, 'doubleclick') !== false)
) {
// This parameter sometimes is found & contains the page with the adsense ad bringing visitor to our site
$value = $this->getParameterValueFromReferrerUrl('url');
if (!empty($value)) {
$parsedAdsenseReferrerUrl = parse_url($value);
if (!empty($parsedAdsenseReferrerUrl['host'])) {
if (empty($this->nameReferrerAnalyzed)) {
$type = $this->getParameterValueFromReferrerUrl('ad_type');
$type = $type ? " ($type)" : '';
$this->nameReferrerAnalyzed = self::LABEL_ADWORDS_NAME . $type;
$this->typeReferrerAnalyzed = Common::REFERRER_TYPE_CAMPAIGN;
}
$this->keywordReferrerAnalyzed = self::LABEL_PREFIX_ADWORDS_KEYWORD . $parsedAdsenseReferrerUrl['host'];
}
}
}
}
/**
* @return string
*/
protected function getParameterValueFromReferrerUrl($adsenseReferrerParameter)
{
$value = trim(urldecode(UrlHelper::getParameterFromQueryString($this->referrerUrlParse['query'], $adsenseReferrerParameter)));
return $value;
}
/**
* @return bool
*/
protected function detectReferrerCampaign(Request $request, Visitor $visitor)
{
$isCampaign = $this->detectReferrerCampaignFromTrackerParams($request);
if (!$isCampaign) {
$this->detectReferrerCampaignFromLandingUrl();
}
$this->detectCampaignKeywordFromReferrerUrl();
$referrerNameAnalayzed = Common::mb_strtolower($this->nameReferrerAnalyzed);
$referrerNameAnalayzed = $this->truncateReferrerName($referrerNameAnalayzed);
$isCurrentVisitACampaignWithSameName = Common::mb_strtolower($visitor->getVisitorColumn('referer_name')) == $referrerNameAnalayzed;
$isCurrentVisitACampaignWithSameName = $isCurrentVisitACampaignWithSameName && $visitor->getVisitorColumn('referer_type') == Common::REFERRER_TYPE_CAMPAIGN;
// if we detected a campaign but there is still no keyword set, we set the keyword to the Referrer host
if (empty($this->keywordReferrerAnalyzed)) {
if ($isCurrentVisitACampaignWithSameName) {
$this->keywordReferrerAnalyzed = $visitor->getVisitorColumn('referer_keyword');
// it is an existing visit and no referrer keyword was used initially (or a different host),
// we do not use the default referrer host in this case as it would create a new visit. It would create
// a new visit because initially the referrer keyword was not set (or from a different host) and now
// we would set it suddenly. The changed keyword would be recognized as a campaign change and a new
// visit would be forced. Why would it suddenly set a keyword but not do it initially?
// This happens when on the first visit when the URL was opened directly (no referrer or different host)
// and then the user navigates to another page where the referrer host becomes the own host
// (referrer = own website) see https://github.com/piwik/piwik/issues/9299
} else {
$this->keywordReferrerAnalyzed = $this->referrerHost;
}
}
if ($this->typeReferrerAnalyzed != Common::REFERRER_TYPE_CAMPAIGN) {
$this->keywordReferrerAnalyzed = null;
$this->nameReferrerAnalyzed = null;
return false;
}
$this->keywordReferrerAnalyzed = Common::mb_strtolower($this->keywordReferrerAnalyzed);
$this->nameReferrerAnalyzed = Common::mb_strtolower($this->nameReferrerAnalyzed);
return true;
}
/**
* @param Request $request
* @param Visitor $visitor
* @param Action|null $action
* @return mixed
*/
public function getValueForRecordGoal(Request $request, Visitor $visitor)
{
$referrerUrl = $request->getParam('_ref');
$referrerCampaignName = $this->getReferrerCampaignQueryParam($request, '_rcn');
$referrerCampaignKeyword = $this->getReferrerCampaignQueryParam($request, '_rck');
// Attributing the correct Referrer to this conversion.
// Priority order is as follows:
// 0) In some cases, the campaign is not passed from the JS so we look it up from the current visit
// 1) Campaign name/kwd parsed in the JS
// 2) Referrer URL stored in the _ref cookie
// 3) If no info from the cookie, attribute to the current visit referrer
Common::printDebug("Attributing a referrer to this Goal...");
// 3) Default values: current referrer
$type = $visitor->getVisitorColumn('referer_type');
$name = $visitor->getVisitorColumn('referer_name');
$keyword = $visitor->getVisitorColumn('referer_keyword');
// 0) In some (unknown!?) cases the campaign is not found in the attribution cookie, but the URL ref was found.
// In this case we look up if the current visit is credited to a campaign and will credit this campaign rather than the URL ref (since campaigns have higher priority)
if (empty($referrerCampaignName)
&& $type == Common::REFERRER_TYPE_CAMPAIGN
&& !empty($name)
) {
// Use default values per above
Common::printDebug("Invalid Referrer information found: current visitor seems to have used a campaign, but campaign name was not found in the request.");
} // 1) Campaigns from 1st party cookie
elseif (!empty($referrerCampaignName)) {
$type = Common::REFERRER_TYPE_CAMPAIGN;
$name = $referrerCampaignName;
$keyword = $referrerCampaignKeyword;
Common::printDebug("Campaign information from 1st party cookie is used.");
} // 2) Referrer URL parsing
elseif (!empty($referrerUrl)) {
$idSite = $request->getIdSite();
$referrer = $this->getReferrerInformation($referrerUrl, $currentUrl = '', $idSite, $request, $visitor);
// if the parsed referrer is interesting enough, ie. website, social network or search engine
if (in_array($referrer['referer_type'], array(Common::REFERRER_TYPE_SEARCH_ENGINE, Common::REFERRER_TYPE_WEBSITE, Common::REFERRER_TYPE_SOCIAL_NETWORK))) {
$type = $referrer['referer_type'];
$name = $referrer['referer_name'];
$keyword = $referrer['referer_keyword'];
Common::printDebug("Referrer URL (search engine, social network or website) is used.");
} else {
Common::printDebug("No referrer attribution found for this user. Current user's visit referrer is used.");
}
} else {
Common::printDebug("No referrer attribution found for this user. Current user's visit referrer is used.");
}
$this->setCampaignValuesToLowercase($type, $name, $keyword);
$fields = array(
'referer_type' => $type,
'referer_name' => $name,
'referer_keyword' => $keyword,
);
if (array_key_exists($this->columnName, $fields)) {
return $fields[$this->columnName];
}
return false;
}
/**
* @param $type
* @param $name
* @param $keyword
*/
protected function setCampaignValuesToLowercase($type, &$name, &$keyword)
{
if ($type === Common::REFERRER_TYPE_CAMPAIGN) {
if (!empty($name)) {
$name = Common::mb_strtolower($name);
}
if (!empty($keyword)) {
$keyword = Common::mb_strtolower($keyword);
}
}
}
protected function isReferrerInformationNew(Visitor $visitor, $information)
{
foreach (array('referer_keyword', 'referer_name', 'referer_type') as $infoName) {
if ($this->hasReferrerColumnChanged($visitor, $information, $infoName)) {
return true;
}
}
return false;
}
protected function hasReferrerColumnChanged(Visitor $visitor, $information, $infoName)
{
$existing = Common::mb_strtolower($visitor->getVisitorColumn($infoName));
$new = Common::mb_strtolower($information[$infoName]);
$result = $existing != $new;
if ($result) {
Common::printDebug("Referrers\Base::isReferrerInformationNew: detected change in $infoName ('$existing' != '$new').");
}
return $result;
}
protected function doesLastActionHaveSameReferrer(Visitor $visitor, $referrerType)
{
return $visitor->getVisitorColumn('referer_type') == $referrerType;
}
protected function getReferrerCampaignQueryParam(Request $request, $paramName)
{
return trim(urldecode($request->getParam($paramName)));
}
private function truncateReferrerName($name)
{
return Common::mb_substr($name, 0, 255);
}
private function truncateReferrerKeyword($refererKeyword)
{
return Common::mb_substr($refererKeyword, 0, 255);
}
protected function isCurrentReferrerDirectEntry(Visitor $visitor)
{
$referrerType = $visitor->getVisitorColumn('referer_type');
return $referrerType == Common::REFERRER_TYPE_DIRECT_ENTRY;
}
}
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