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Headers.php
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Headers.php
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<?php
namespace born05\contentsecuritypolicy\services;
use born05\contentsecuritypolicy\Plugin;
use Craft;
use craft\base\Component;
class Headers extends Component
{
private $nonces = [];
/**
* Sets the CSP headers.
*/
public function setHeaders()
{
$settings = Plugin::$plugin->getSettings();
$csp = [];
if (!empty($settings->baseUri)) {
$csp['base-uri'] = $settings->baseUri;
}
if (!empty($settings->defaultSrc)) {
$csp['default-src'] = $settings->defaultSrc;
}
if (!empty($settings->scriptSrc)) {
$csp['script-src'] = $settings->scriptSrc;
}
if (!empty($settings->styleSrc)) {
$csp['style-src'] = $settings->styleSrc;
}
if (!empty($settings->imgSrc)) {
$csp['img-src'] = $settings->imgSrc;
}
if (!empty($settings->connectSrc)) {
$csp['connect-src'] = $settings->connectSrc;
}
if (!empty($settings->fontSrc)) {
$csp['font-src'] = $settings->fontSrc;
}
if (!empty($settings->objectSrc)) {
$csp['object-src'] = $settings->objectSrc;
}
if (!empty($settings->mediaSrc)) {
$csp['media-src'] = $settings->mediaSrc;
}
if (!empty($settings->frameSrc)) {
$csp['frame-src'] = $settings->frameSrc;
}
if (!empty($settings->sandbox)) {
$csp['sandbox'] = $settings->sandbox;
}
if (!empty($settings->reportUri)) {
$csp['report-uri'] = $settings->reportUri;
}
if (!empty($settings->childSrc)) {
$csp['child-src'] = $settings->childSrc;
}
if (!empty($settings->formAction)) {
$csp['form-action'] = $settings->formAction;
}
if (!empty($settings->frameAncestors)) {
$csp['frame-ancestors'] = $settings->frameAncestors;
}
if (!empty($settings->pluginTypes)) {
$csp['plugin-types'] = $settings->pluginTypes;
}
if (!empty($settings->reportTo)) {
$csp['report-to'] = $settings->reportTo;
}
if (!empty($settings->workerSrc)) {
$csp['worker-src'] = $settings->workerSrc;
}
if (!empty($settings->manifestSrc)) {
$csp['manifest-src'] = $settings->manifestSrc;
}
if (!empty($settings->navigateTo)) {
$csp['navigate-to'] = $settings->navigateTo;
}
foreach ($this->nonces as $type => $nonceList) {
foreach ($nonceList as $nonce) {
$csp[$type][] = "'nonce-" . $nonce . "'";
}
}
$cspValues = [];
foreach ($csp as $key => $values) {
$cspValues[] = $key . ' ' . join(' ', $values);
}
$cspValue = join('; ', $cspValues);
Craft::$app->response->headers->add('Content-Security-Policy', $cspValue . ';');
}
/**
* Register nonce by type.
*
* @param string $type
*
* @return string
*/
public function registerNonce(string $type) {
$nonce = bin2hex(random_bytes(22));
$this->nonces[$type][] = $nonce;
return $nonce;
}
}