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<?php
/* Icinga Web 2 | (c) 2015 Icinga Development Team | GPLv2+ */
namespace Icinga\Controllers;
use Icinga\Web\Session;
use ipl\Html\BaseHtmlElement;
use ipl\Html\Html;
use ipl\Html\HtmlString;
use ipl\Html\Text;
use ipl\Web\Compat\CompatController;
use ipl\Web\Url;
use ipl\Web\Widget\Icon;
use ipl\Web\Widget\Tabs;
/**
* Display external or internal links within an iframe
*/
class IframeController extends CompatController
{
/**
* Display iframe w/ the given URL
*/
public function indexAction(): void
{
$url = Url::fromPath($this->params->getRequired('url'));
$urlHash = $this->getRequest()->getHeader('X-Icinga-URLHash');
$expectedHash = hash('sha256', $url->getAbsoluteUrl() . Session::getSession()->getId());
$iframeUrl = Url::fromPath('iframe', ['url' => $url->getAbsoluteUrl()]);
if (! in_array($url->getScheme(), ['http', 'https'], true)) {
$this->httpBadRequest('Invalid URL scheme');
}
$this->injectTabs();
$this->getTabs()->setRefreshUrl($iframeUrl);
if ($urlHash) {
if ($urlHash !== $expectedHash) {
$this->httpBadRequest('Invalid URL hash');
}
} else {
$this->addContent(Html::tag('div', ['class' => 'iframe-warning'], [
Html::tag('h2', $this->translate('Attention!')),
Html::tag('p', ['class' => 'note'], $this->translate(
'You are about to open untrusted content embedded in Icinga Web! Only proceed,'
.' by clicking the link below, if you recognize and trust the source!'
)),
Html::tag('a', ['data-url-hash' => $expectedHash, 'href' => Html::escape($iframeUrl)], $url),
Html::tag('p', ['class' => 'reason'], [
new Icon('circle-info'),
Text::create($this->translate(
'You see this warning because you do not seem to have followed a link in Icinga Web.'
. ' You can bypass this in the future by configuring a navigation item instead.'
))
])
]));
return;
}
$this->getTabs()->setHash($expectedHash);
$this->addContent(Html::tag(
'div',
['class' => 'iframe-container'],
Html::tag('iframe', [
'src' => $url,
'sandbox' => 'allow-same-origin allow-scripts allow-popups allow-forms',
])
));
}
private function injectTabs(): void
{
$this->tabs = new class extends Tabs {
private $hash;
public function setHash($hash)
{
$this->hash = $hash;
return $this;
}
protected function assemble()
{
$tabHtml = substr($this->tabs->render(), 34, -5);
if ($this->refreshUrl !== null) {
$tabHtml = preg_replace(
[
'/(?<=class="refresh-container-control spinner" href=")([^"]*)/',
'/(\s)(?=href)/'
],
[
$this->refreshUrl->getAbsoluteUrl(),
' data-url-hash="' . $this->hash . '" '
],
$tabHtml
);
}
BaseHtmlElement::add(HtmlString::create($tabHtml));
}
};
$this->controls->setTabs($this->tabs);
}
}
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