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msd2/tracking/piwik/plugins/Diagnostics/Diagnostic/PageSpeedCheck.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\Plugins\Diagnostics\Diagnostic;
+
+use Piwik\Config;
+use Piwik\Http;
+use Piwik\Translation\Translator;
+use Piwik\Url;
+use Psr\Log\LoggerInterface;
+
+/**
+ * Check that mod_pagespeed is not enabled.
+ */
+class PageSpeedCheck implements Diagnostic
+{
+    /**
+     * @var Translator
+     */
+    private $translator;
+
+    /**
+     * @var LoggerInterface
+     */
+    private $logger;
+
+    public function __construct(Translator $translator, LoggerInterface $logger)
+    {
+        $this->translator = $translator;
+        $this->logger = $logger;
+    }
+
+    public function execute()
+    {
+        $label = $this->translator->translate('Installation_SystemCheckPageSpeedDisabled');
+
+        if (! $this->isPageSpeedEnabled()) {
+            return array(DiagnosticResult::singleResult($label, DiagnosticResult::STATUS_OK));
+        }
+
+        $comment = $this->translator->translate('Installation_SystemCheckPageSpeedWarning', array(
+            '(eg. Apache, Nginx or IIS)',
+        ));
+
+        return array(DiagnosticResult::singleResult($label, DiagnosticResult::STATUS_WARNING, $comment));
+    }
+
+    private function isPageSpeedEnabled()
+    {
+        $url = Url::getCurrentUrlWithoutQueryString() . '?module=Installation&action=getEmptyPageForSystemCheck';
+
+        try {
+            $page = Http::sendHttpRequest($url,
+                $timeout = 1,
+                $userAgent = null,
+                $destinationPath = null,
+                $followDepth = 0,
+                $acceptLanguage = false,
+                $byteRange = false,
+
+                // Return headers
+                $getExtendedInfo = true
+            );
+        } catch(\Exception $e) {
+            $this->logger->info('Unable to test if mod_pagespeed is enabled: the request to {url} failed', array(
+                'url' => $url,
+            ));
+            // If the test failed, we assume Page speed is not enabled
+            return false;
+        }
+        
+        return isset($page['headers']['X-Mod-Pagespeed']) || isset($page['headers']['X-Page-Speed']);
+    }
+}