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Send various securtiy headers

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This commit is contained in:
Daniel Winzen
2020-10-15 19:59:42 +02:00
parent 4ddc7de227
commit 32d9609e4f
4 changed files with 32 additions and 13 deletions
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20
common_config.php
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@ -111,3 +111,23 @@ function blacklist_scams($address, $content){
}
}
}
function send_headers(array $styles = []){
header('Content-Type: text/html; charset=UTF-8');
header('Pragma: no-cache');
header('Cache-Control: no-cache, no-store, must-revalidate, max-age=0, private');
header('Expires: 0');
header('Referrer-Policy: no-referrer');
header("Permissions-Policy: accelerometer 'none'; ambient-light-sensor 'none'; autoplay 'none'; battery 'none'; camera 'none'; cross-origin-isolated 'none'; display-capture 'none'; document-domain 'none'; encrypted-media 'none'; geolocation 'none'; fullscreen 'none'; execution-while-not-rendered 'none'; execution-while-out-of-viewport 'none'; gyroscope 'none'; magnetometer 'none'; microphone 'none'; midi 'none'; navigation-override 'none'; payment 'none'; picture-in-picture 'none'; publickey-credentials-get 'none'; screen-wake-lock 'none'; sync-xhr 'none'; usb 'none'; web-share 'none'; xr-spatial-tracking 'none'; clipboard-read 'none'; clipboard-write 'none'; gamepad 'none'; speaker-selection 'none'; conversion-measurement 'none'; focus-without-user-activation 'none'; hid 'none'; idle-detection 'none'; sync-script 'none'; vertical-scroll 'none'; serial 'none'; trust-token-redemption 'none';");
$style_hashes = '';
foreach($styles as $style) {
$style_hashes .= " 'sha256-".base64_encode(hash('sha256', $style, true))."'";
}
header("Content-Security-Policy: default-src 'none'; font-src 'self'; form-action 'self'; img-src 'self' data:; media-src 'self'; style-src 'self'$style_hashes");
header('X-Content-Type-Options: nosniff');
header('X-Frame-Options: sameorigin');
header('X-XSS-Protection: 1; mode=block');
if($_SERVER['REQUEST_METHOD'] === 'HEAD'){
exit; // headers sent, no further processing needed
}
}