From 227497705e03758fef0816b55d841d47044a4f37 Mon Sep 17 00:00:00 2001 From: Joas Schilling Date: Wed, 12 Jul 2023 09:23:37 +0200 Subject: [PATCH] fix(apps): Fix loading info.xml file Ref: https://bugs.php.net/bug.php?id=62577 Signed-off-by: Joas Schilling --- lib/base.php | 5 +++++ lib/private/App/InfoParser.php | 6 +++--- lib/private/Installer.php | 4 ++-- 3 files changed, 10 insertions(+), 5 deletions(-) diff --git a/lib/base.php b/lib/base.php index 09ec5be441b5b..ed62494ab309d 100644 --- a/lib/base.php +++ b/lib/base.php @@ -588,6 +588,11 @@ private static function performSameSiteCookieProtection(\OCP\IConfig $config): v } public static function init(): void { + // prevent any XML processing from loading external entities + libxml_set_external_entity_loader(static function () { + return null; + }); + // calculate the root directories OC::$SERVERROOT = str_replace("\\", '/', substr(__DIR__, 0, -4)); diff --git a/lib/private/App/InfoParser.php b/lib/private/App/InfoParser.php index c0f69e615bdf7..79d051fd2a1f6 100644 --- a/lib/private/App/InfoParser.php +++ b/lib/private/App/InfoParser.php @@ -31,7 +31,7 @@ use OCP\ICache; use function libxml_disable_entity_loader; -use function simplexml_load_file; +use function simplexml_load_string; class InfoParser { /** @var \OCP\ICache|null */ @@ -63,10 +63,10 @@ public function parse($file) { libxml_use_internal_errors(true); if ((PHP_VERSION_ID < 80000)) { $loadEntities = libxml_disable_entity_loader(false); - $xml = simplexml_load_file($file); + $xml = simplexml_load_string(file_get_contents($file)); libxml_disable_entity_loader($loadEntities); } else { - $xml = simplexml_load_file($file); + $xml = simplexml_load_string(file_get_contents($file)); } if ($xml === false) { diff --git a/lib/private/Installer.php b/lib/private/Installer.php index 43c3db7c3fdf9..0458c14da8a29 100644 --- a/lib/private/Installer.php +++ b/lib/private/Installer.php @@ -333,10 +333,10 @@ public function downloadApp($appId, $allowUnstable = false) { // Check if appinfo/info.xml has the same app ID as well if ((PHP_VERSION_ID < 80000)) { $loadEntities = libxml_disable_entity_loader(false); - $xml = simplexml_load_file($extractDir . '/' . $folders[0] . '/appinfo/info.xml'); + $xml = simplexml_load_string(file_get_contents($extractDir . '/' . $folders[0] . '/appinfo/info.xml')); libxml_disable_entity_loader($loadEntities); } else { - $xml = simplexml_load_file($extractDir . '/' . $folders[0] . '/appinfo/info.xml'); + $xml = simplexml_load_string(file_get_contents($extractDir . '/' . $folders[0] . '/appinfo/info.xml')); } if ((string)$xml->id !== $appId) { throw new \Exception(