function addProxyToTags($html, $website, $proxy_images, $cloak_referrer)
{
if ($html === '' || !$cloak_referrer && !$proxy_images || !$cloak_referrer && $proxy_images && !Helper\isSecureConnection()) {
// only proxy enabled, but not connected via HTTPS
return $html;
}
$config = new PicoFeedConfig();
$config->setFilterImageProxyUrl('?action=proxy&url=%s');
if (!$cloak_referrer && $proxy_images) {
// image proxy mode only: https links do not need to be proxied, since
// they do not trigger mixed content warnings.
$config->setFilterImageProxyProtocol('http');
} elseif (!$proxy_images && $cloak_referrer && Helper\isSecureConnection()) {
// cloaking mode only: if a request from a HTTPS connection to a HTTP
// connection is made, the referrer will be omitted by the browser.
// Only the referrer for HTTPS to HTTPs requests needs to be cloaked.
$config->setFilterImageProxyProtocol('https');
}
$filter = Filter::html($html, $website);
$filter->setConfig($config);
return $filter->execute();
}
public function testImageProxyLimitedToHTTPSwithHTTPSLink()
{
$config = new Config();
$config->setFilterImageProxyUrl('http://myproxy/?url=%s');
$config->setFilterImageProxyProtocol('https');
$f = Filter::html('<p>Image <img src="https://localhost/image.png" alt="My Image"/></p>', 'http://foo');
$f->setConfig($config);
$this->assertEquals('<p>Image <img src="http://myproxy/?url=' . rawurlencode('https://localhost/image.png') . '" alt="My Image"/></p>', $f->execute());
}