From 230acfcbc4a0dac7d9f496698ca6ca13109a2b73 Mon Sep 17 00:00:00 2001
From: csteipp <csteipp@wikimedia.org>
Date: Tue, 12 Nov 2013 16:27:37 -0800
Subject: [PATCH] SECURITY: Don't cache when a call could autocreate

Fixes for action=raw (used when sites include other site's javascript),
and stashed images.

Bug: 53032
Change-Id: I8f915f6a4756f750c74d9ee9bec58f7ba6c0c827
---
 includes/actions/RawAction.php           | 5 +++++
 includes/specials/SpecialUploadStash.php | 2 ++
 2 files changed, 7 insertions(+)

diff --git a/includes/actions/RawAction.php b/includes/actions/RawAction.php
index e4c6b3e..f3b7204 100644
--- a/includes/actions/RawAction.php
+++ b/includes/actions/RawAction.php
@@ -79,6 +79,11 @@ class RawAction extends FormlessAction {
 		# Output may contain user-specific data;
 		# vary generated content for open sessions on private wikis
 		$privateCache = !$wgGroupPermissions['*']['read'] && ( $smaxage == 0 || session_id() != '' );
+		// Bug 53032 - make this private if user is logged in,
+		// so we don't accidentally cache cookies
+		if ( !$privateCache ) {
+			$privateCache = $this->getUser()->isLoggedIn();
+		}
 		# allow the client to cache this for 24 hours
 		$mode = $privateCache ? 'private' : 'public';
 		$response->header( 'Cache-Control: ' . $mode . ', s-maxage=' . $smaxage . ', max-age=' . $maxage );
diff --git a/includes/specials/SpecialUploadStash.php b/includes/specials/SpecialUploadStash.php
index 121b6a4..4c1f5ff 100644
--- a/includes/specials/SpecialUploadStash.php
+++ b/includes/specials/SpecialUploadStash.php
@@ -279,6 +279,8 @@ class SpecialUploadStash extends UnlistedSpecialPage {
 		header( "Content-Type: $contentType", true );
 		header( 'Content-Transfer-Encoding: binary', true );
 		header( 'Expires: Sun, 17-Jan-2038 19:14:07 GMT', true );
+		// Bug 53032 - It shouldn't be a problem here, but let's be safe and not cache
+		header( 'Cache-Control: private' );
 		header( "Content-Length: $size", true );
 	}
 
-- 
1.8.1.4

