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msd2/tracking/piwik/core/Tracker/Visit/Factory.php

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+<?php
+/**
+ * Piwik - free/libre analytics platform
+ *
+ * @link http://piwik.org
+ * @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
+ *
+ */
+namespace Piwik\Tracker\Visit;
+
+use Piwik\Piwik;
+use Piwik\Tracker\Visit;
+use Piwik\Tracker\VisitInterface;
+use Exception;
+
+class Factory
+{
+    /**
+     * Returns the Tracker_Visit object.
+     * This method can be overwritten to use a different Tracker_Visit object
+     *
+     * @throws Exception
+     * @return \Piwik\Tracker\Visit
+     */
+    public static function make()
+    {
+        $visit = null;
+
+        /**
+         * Triggered before a new **visit tracking object** is created. Subscribers to this
+         * event can force the use of a custom visit tracking object that extends from
+         * {@link Piwik\Tracker\VisitInterface}.
+         *
+         * @param \Piwik\Tracker\VisitInterface &$visit Initialized to null, but can be set to
+         *                                              a new visit object. If it isn't modified
+         *                                              Piwik uses the default class.
+         */
+        Piwik::postEvent('Tracker.makeNewVisitObject', array(&$visit));
+
+        if (!isset($visit)) {
+            $visit = new Visit();
+        } elseif (!($visit instanceof VisitInterface)) {
+            throw new Exception("The Visit object set in the plugin must implement VisitInterface");
+        }
+
+        return $visit;
+    }
+}

msd2/tracking/piwik/core/Tracker/Visit/ReferrerSpamFilter.php

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+<?php
+/**
+ * Piwik - free/libre analytics platform
+ *
+ * @link http://piwik.org
+ * @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
+ *
+ */
+namespace Piwik\Tracker\Visit;
+
+use Piwik\Cache;
+use Piwik\Common;
+use Piwik\Option;
+use Piwik\Tracker\Request;
+
+/**
+ * Filters out tracking requests issued by spammers.
+ */
+class ReferrerSpamFilter
+{
+    const OPTION_STORAGE_NAME = 'referrer_spam_blacklist';
+    /**
+     * @var string[]
+     */
+    private $spammerList;
+
+    /**
+     * Check if the request is from a known spammer host.
+     *
+     * @param Request $request
+     * @return bool
+     */
+    public function isSpam(Request $request)
+    {
+        $spammers = $this->getSpammerListFromCache();
+
+        $referrerUrl = $request->getParam('urlref');
+
+        foreach ($spammers as $spammerHost) {
+            if (stripos($referrerUrl, $spammerHost) !== false) {
+                Common::printDebug('Referrer URL is a known spam: ' . $spammerHost);
+                return true;
+            }
+        }
+
+        return false;
+    }
+
+    private function getSpammerListFromCache()
+    {
+        $cache = Cache::getEagerCache();
+        $cacheId = 'ReferrerSpamFilter-' . self::OPTION_STORAGE_NAME;
+
+        if ($cache->contains($cacheId)) {
+            $list = $cache->fetch($cacheId);
+        } else {
+            $list = $this->loadSpammerList();
+            $cache->save($cacheId, $list);
+        }
+
+        if(!is_array($list)) {
+            Common::printDebug('Warning: could not read list of spammers from cache.');
+            return array();
+        }
+        return $list;
+    }
+
+    private function loadSpammerList()
+    {
+        if ($this->spammerList !== null) {
+            return $this->spammerList;
+        }
+
+        // Read first from the auto-updated list in database
+        $list = Option::get(self::OPTION_STORAGE_NAME);
+
+        if ($list) {
+            $this->spammerList = Common::safe_unserialize($list);
+        } else {
+            // Fallback to reading the bundled list
+            $file = PIWIK_VENDOR_PATH . '/matomo/referrer-spam-blacklist/spammers.txt';
+            $this->spammerList = file($file, FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES);
+        }
+
+        return $this->spammerList;
+    }
+}

msd2/tracking/piwik/core/Tracker/Visit/VisitProperties.php

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+<?php
+/**
+ * Piwik - free/libre analytics platform
+ *
+ * @link http://piwik.org
+ * @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
+ */
+
+namespace Piwik\Tracker\Visit;
+
+/**
+ * Holds temporary data for tracking requests.
+ */
+class VisitProperties
+{
+    /**
+     * Information about the current visit. This array holds the column values that will be inserted or updated
+     * in the `log_visit` table, or the values for the last known visit of the current visitor.
+     *
+     * @var array
+     */
+    private $visitInfo = array();
+
+    /**
+     * Returns a visit property, or `null` if none is set.
+     *
+     * @param string $name The property name.
+     * @return mixed
+     */
+    public function getProperty($name)
+    {
+        return isset($this->visitInfo[$name]) ? $this->visitInfo[$name] : null;
+    }
+
+    /**
+     * Returns all visit properties by reference.
+     *
+     * @return array
+     */
+    public function &getProperties()
+    {
+        return $this->visitInfo;
+    }
+
+    /**
+     * Sets a visit property.
+     *
+     * @param string $name The property name.
+     * @param mixed $value The property value.
+     */
+    public function setProperty($name, $value)
+    {
+        $this->visitInfo[$name] = $value;
+    }
+
+    /**
+     * Unsets all visit properties.
+     */
+    public function clearProperties()
+    {
+        $this->visitInfo = array();
+    }
+
+    /**
+     * Sets all visit properties.
+     *
+     * @param array $properties
+     */
+    public function setProperties($properties)
+    {
+        $this->visitInfo = $properties;
+    }
+}