Merge "Revert "Gallery: Use intrinsic width for gallery to center caption""

[lhc/web/wiklou.git] / includes / ServiceWiring.php

diff --git a/includes/ServiceWiring.php b/includes/ServiceWiring.php
index a427f5c..c2197a6 100644 (file)
--- a/includes/ServiceWiring.php
+++ b/includes/ServiceWiring.php
@@ -184,6 +184,29 @@ return [
                );
        },
 
+       'CryptHKDF' => function( MediaWikiServices $services ) {
+               $config = $services->getMainConfig();
+
+               $secret = $config->get( 'HKDFSecret' ) ?: $config->get( 'SecretKey' );
+               if ( !$secret ) {
+                       throw new RuntimeException( "Cannot use MWCryptHKDF without a secret." );
+               }
+
+               // In HKDF, the context can be known to the attacker, but this will
+               // keep simultaneous runs from producing the same output.
+               $context = [ microtime(), getmypid(), gethostname() ];
+
+               // Setup salt cache. Use APC, or fallback to the main cache if it isn't setup
+               $cache = $services->getLocalServerObjectCache();
+               if ( $cache instanceof EmptyBagOStuff ) {
+                       $cache = ObjectCache::getLocalClusterInstance();
+               }
+
+               return new CryptHKDF( $secret, $config->get( 'HKDFAlgorithm' ),
+                       $cache, $context, $services->getCryptRand()
+               );
+       },
+
        'MediaHandlerFactory' => function( MediaWikiServices $services ) {
                return new MediaHandlerFactory(
                        $services->getMainConfig()->get( 'MediaHandlers' )