mediawiki-skins-Citizen/includes/SkinCitizen.php
2019-12-27 03:05:05 -05:00

224 lines
5.5 KiB
PHP

<?php
/**
* SkinTemplate class for the Citizen skin
*
* @ingroup Skins
*/
class SkinCitizen extends SkinTemplate {
public $skinname = 'citizen';
public $stylename = 'Citizen';
public $template = 'CitizenTemplate';
/**
* @var OutputPage
*/
private $out;
/**
* ResourceLoader
*
* @param OutputPage $out
*/
public function initPage( OutputPage $out ) {
$this->out = $out;
// Responsive layout
$out->addMeta( 'viewport', 'width=device-width, initial-scale=1.0' );
// Theme color
$out->addMeta( 'theme-color', $this->getConfigValue( 'CitizenThemeColor' ) ?? '' );
// Preconnect origin
$this->addPreConnect();
// Generate manifest
$this->addManifest();
// HTTP headers
// CSP
$this->addCSP();
// HSTS
$this->addHSTS();
// Deny X-Frame-Options
$this->addXFrameOptions();
// Strict referrer policy
$this->addStrictReferrerPolicy();
// Feature policy
$this->addFeaturePolicy();
$this->addModules();
}
/**
* getConfig() wrapper to catch exceptions.
* Returns null on exception
*
* @param string $key
* @return mixed|null
* @see SkinTemplate::getConfig()
*/
private function getConfigValue( $key ) {
try {
$value = $this->getConfig()->get( $key );
} catch ( ConfigException $e ) {
$value = null;
}
return $value;
}
/**
* Adds a preconnect header if enabled in 'CitizenEnablePreconnect'
*/
private function addPreConnect() {
if ( $this->getConfigValue( 'CitizenEnablePreconnect' ) === true ) {
$this->out->addLink( [
'rel' => 'preconnect',
'href' => $this->getConfigValue( 'CitizenPreconnectURL' ),
] );
}
}
/**
* Adds the manifest if enabled in 'CitizenEnableManifest'.
* Manifest link will be empty if wfExpandUrl throws an exception.
*/
private function addManifest() {
if ( $this->getConfigValue( 'CitizenEnableManifest' ) === true ) {
try {
$href =
wfExpandUrl( wfAppendQuery( wfScript( 'api' ),
[ 'action' => 'webapp-manifest' ] ), PROTO_RELATIVE );
} catch ( Exception $e ) {
$href = '';
}
$this->out->addLink( [
'rel' => 'manifest',
'href' => $href,
] );
}
}
/**
* Adds the csp directive if enabled in 'CitizenEnableCSP'.
* Directive holds the content of 'CitizenCSPDirective'.
*/
private function addCSP() {
if ( $this->getConfigValue( 'CitizenEnableCSP' ) === true ) {
$cspDirective = $this->getConfigValue( 'CitizenCSPDirective' ) ?? '';
$cspMode = 'Content-Security-Policy';
// Check if report mode is enabled
if ( $this->getConfigValue( 'CitizenEnableCSPReportMode' ) === true ) {
$cspMode = 'Content-Security-Policy-Report-Only';
}
$this->out->getRequest()->response()->header( sprintf( '%s: %s', $cspMode,
$cspDirective ) );
}
}
/**
* Adds the HSTS Header. If no max age or an invalid max age is set a default of 300 will be
* applied.
* Preload and Include Subdomains can be enabled by setting 'CitizenHSTSIncludeSubdomains'
* and/or 'CitizenHSTSPreload' to true.
*/
private function addHSTS() {
if ( $this->getConfigValue( 'CitizenEnableHSTS' ) === true ) {
$maxAge = $this->getConfigValue( 'CitizenHSTSMaxAge' );
$includeSubdomains = $this->getConfigValue( 'CitizenHSTSIncludeSubdomains' ) ?? false;
$preload = $this->getConfigValue( 'CitizenHSTSPreload' ) ?? false;
// HSTS max age
if ( is_int( $maxAge ) ) {
$maxAge = max( $maxAge, 0 );
} else {
// Default to 5 mins if input is invalid
$maxAge = 300;
}
$hstsHeader = 'Strict-Transport-Security: max-age=' . $maxAge;
if ( $includeSubdomains ) {
$hstsHeader .= '; includeSubDomains';
}
if ( $preload ) {
$hstsHeader .= '; preload';
}
$this->out->getRequest()->response()->header( $hstsHeader );
}
}
/**
* Adds the X-Frame-Options header if set in 'CitizenEnableDenyXFrameOptions'
*/
private function addXFrameOptions() {
if ( $this->getConfigValue( 'CitizenEnableDenyXFrameOptions' ) === true ) {
$this->out->getRequest()->response()->header( 'X-Frame-Options: deny' );
}
}
/**
* Adds the referrer header if enabled in 'CitizenEnableStrictReferrerPolicy'
*/
private function addStrictReferrerPolicy() {
if ( $this->getConfigValue( 'CitizenEnableStrictReferrerPolicy' ) === true ) {
// iOS Safari, IE, Edge compatiblity
$this->out->addMeta( 'referrer', 'strict-origin' );
$this->out->addMeta( 'referrer', 'strict-origin-when-cross-origin' );
$this->out->getRequest()
->response()
->header( 'Referrer-Policy: strict-origin-when-cross-origin' );
}
}
/**
* Adds the Feature policy header to the response if enabled in 'CitizenFeaturePolicyDirective'
*/
private function addFeaturePolicy() {
if ( $this->getConfigValue( 'CitizenEnableFeaturePolicy' ) === true ) {
$featurePolicy = $this->getConfigValue( 'CitizenFeaturePolicyDirective' ) ?? '';
$this->out->getRequest()->response()->header( sprintf( 'Feature-Policy: %s',
$featurePolicy ) );
}
}
/**
* Adds all needed skin modules
*/
private function addModules() {
$this->out->addModuleStyles( [
'mediawiki.skinning.content.externallinks',
'skins.citizen',
'skins.citizen.icons',
'skins.citizen.icons.ca',
'skins.citizen.icons.p',
'skins.citizen.icons.toc',
'skins.citizen.icons.es',
'skins.citizen.icons.n',
'skins.citizen.icons.t',
'skins.citizen.icons.pt',
'skins.citizen.icons.footer',
'skins.citizen.icons.badges',
'skins.citizen.icons.search',
] );
$this->out->addModules( [
'skins.citizen.js',
'skins.citizen.search',
] );
}
}