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<?php
declare(strict_types=1);
/**
* @copyright Copyright (c) 2019, Roeland Jago Douma <roeland@famdouma.nl>
*
* @author Roeland Jago Douma <roeland@famdouma.nl>
*
* @license GNU AGPL version 3 or any later version
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
namespace OCP\AppFramework\Http;
/**
* Class EmptyFeaturePolicy is a simple helper which allows applications
* to modify the FeaturePolicy sent by Nextcloud. Per default the policy
* is forbidding everything.
*
* As alternative with sane exemptions look at FeaturePolicy
*
* @see \OCP\AppFramework\Http\FeaturePolicy
* @package OCP\AppFramework\Http
* @since 17.0.0
*/
class EmptyFeaturePolicy {
/** @var string[] of allowed domains to autoplay media */
protected $autoplayDomains = null;
/** @var string[] of allowed domains that can access the camera */
protected $cameraDomains = null;
/** @var string[] of allowed domains that can use fullscreen */
protected $fullscreenDomains = null;
/** @var string[] of allowed domains that can use the geolocation of the device */
protected $geolocationDomains = null;
/** @var string[] of allowed domains that can use the microphone */
protected $microphoneDomains = null;
/** @var string[] of allowed domains that can use the payment API */
protected $paymentDomains = null;
/**
* Allows to use autoplay from a specific domain. Use * to allow from all domains.
*
* @param string $domain Domain to whitelist. Any passed value needs to be properly sanitized.
* @return $this
* @since 17.0.0
*/
public function addAllowedAutoplayDomain(string $domain): self {
$this->autoplayDomains[] = $domain;
return $this;
}
/**
* Allows to use the camera on a specific domain. Use * to allow from all domains
*
* @param string $domain Domain to whitelist. Any passed value needs to be properly sanitized.
* @return $this
* @since 17.0.0
*/
public function addAllowedCameraDomain(string $domain): self {
$this->cameraDomains[] = $domain;
return $this;
}
/**
* Allows the full screen functionality to be used on a specific domain. Use * to allow from all domains
*
* @param string $domain Domain to whitelist. Any passed value needs to be properly sanitized.
* @return $this
* @since 17.0.0
*/
public function addAllowedFullScreenDomain(string $domain): self {
$this->fullscreenDomains[] = $domain;
return $this;
}
/**
* Allows to use the geolocation on a specific domain. Use * to allow from all domains
*
* @param string $domain Domain to whitelist. Any passed value needs to be properly sanitized.
* @return $this
* @since 17.0.0
*/
public function addAllowedGeoLocationDomain(string $domain): self {
$this->geolocationDomains[] = $domain;
return $this;
}
/**
* Allows to use the microphone on a specific domain. Use * to allow from all domains
*
* @param string $domain Domain to whitelist. Any passed value needs to be properly sanitized.
* @return $this
* @since 17.0.0
*/
public function addAllowedMicrophoneDomain(string $domain): self {
$this->microphoneDomains[] = $domain;
return $this;
}
/**
* Allows to use the payment API on a specific domain. Use * to allow from all domains
*
* @param string $domain Domain to whitelist. Any passed value needs to be properly sanitized.
* @return $this
* @since 17.0.0
*/
public function addAllowedPaymentDomain(string $domain): self {
$this->paymentDomains[] = $domain;
return $this;
}
/**
* Get the generated Feature-Policy as a string
*
* @return string
* @since 17.0.0
*/
public function buildPolicy(): string {
$policy = '';
if (empty($this->autoplayDomains)) {
$policy .= "autoplay 'none';";
} else {
$policy .= 'autoplay ' . implode(' ', $this->autoplayDomains);
$policy .= ';';
}
if (empty($this->cameraDomains)) {
$policy .= "camera 'none';";
} else {
$policy .= 'camera ' . implode(' ', $this->cameraDomains);
$policy .= ';';
}
if (empty($this->fullscreenDomains)) {
$policy .= "fullscreen 'none';";
} else {
$policy .= 'fullscreen ' . implode(' ', $this->fullscreenDomains);
$policy .= ';';
}
if (empty($this->geolocationDomains)) {
$policy .= "geolocation 'none';";
} else {
$policy .= 'geolocation ' . implode(' ', $this->geolocationDomains);
$policy .= ';';
}
if (empty($this->microphoneDomains)) {
$policy .= "microphone 'none';";
} else {
$policy .= 'microphone ' . implode(' ', $this->microphoneDomains);
$policy .= ';';
}
if (empty($this->paymentDomains)) {
$policy .= "payment 'none';";
} else {
$policy .= 'payment ' . implode(' ', $this->paymentDomains);
$policy .= ';';
}
return rtrim($policy, ';');
}
}
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