Piwik\Plugin\Controller::setHostValidationVariablesView PHP Method

    public static function setHostValidationVariablesView($view)
    {
        // check if host is valid
        $view->isValidHost = Url::isValidHost();
        if (!$view->isValidHost) {
            // invalid host, so display warning to user
            $validHosts = Url::getTrustedHostsFromConfig();
            $validHost = $validHosts[0];
            $invalidHost = Common::sanitizeInputValue($_SERVER['HTTP_HOST']);
            $emailSubject = rawurlencode(Piwik::translate('CoreHome_InjectedHostEmailSubject', $invalidHost));
            $emailBody = rawurlencode(Piwik::translate('CoreHome_InjectedHostEmailBody'));
            $superUserEmail = implode(',', Piwik::getAllSuperUserAccessEmailAddresses());
            $mailToUrl = "mailto:{$superUserEmail}?subject={$emailSubject}&body={$emailBody}";
            $mailLinkStart = "<a href=\"{$mailToUrl}\">";
            $invalidUrl = Url::getCurrentUrlWithoutQueryString($checkIfTrusted = false);
            $validUrl = Url::getCurrentScheme() . '://' . $validHost . Url::getCurrentScriptName();
            $invalidUrl = Common::sanitizeInputValue($invalidUrl);
            $validUrl = Common::sanitizeInputValue($validUrl);
            $changeTrustedHostsUrl = "index.php" . Url::getCurrentQueryStringWithParametersModified(array('module' => 'CoreAdminHome', 'action' => 'generalSettings')) . "#trustedHostsSection";
            $warningStart = Piwik::translate('CoreHome_InjectedHostWarningIntro', array('<strong>' . $invalidUrl . '</strong>', '<strong>' . $validUrl . '</strong>')) . ' <br/>';
            if (Piwik::hasUserSuperUserAccess()) {
                $view->invalidHostMessage = $warningStart . ' ' . Piwik::translate('CoreHome_InjectedHostSuperUserWarning', array("<a href=\"{$changeTrustedHostsUrl}\">", $invalidHost, '</a>', "<br/><a href=\"{$validUrl}\">", $validHost, '</a>'));
            } elseif (Piwik::isUserIsAnonymous()) {
                $view->invalidHostMessage = $warningStart . ' ' . Piwik::translate('CoreHome_InjectedHostNonSuperUserWarning', array("<br/><a href=\"{$validUrl}\">", '</a>', '<span style="display:none">', '</span>'));
            } else {
                $view->invalidHostMessage = $warningStart . ' ' . Piwik::translate('CoreHome_InjectedHostNonSuperUserWarning', array("<br/><a href=\"{$validUrl}\">", '</a>', $mailLinkStart, '</a>'));
            }
            $view->invalidHostMessageHowToFix = '<p><b>How do I fix this problem and how do I login again?</b><br/> The Piwik Super User can manually edit the file piwik/config/config.ini.php
						and add the following lines: <pre>[General]' . "\n" . 'trusted_hosts[] = "' . $invalidHost . '"</pre>After making the change, you will be able to login again.</p>
						<p>You may also <i>disable this security feature (not recommended)</i>. To do so edit config/config.ini.php and add:
						<pre>[General]' . "\n" . 'enable_trusted_host_check=0</pre>';
            $view->invalidHost = $invalidHost;
            // for UserSettings warning
            $view->invalidHostMailLinkStart = $mailLinkStart;
        }
    }