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Code Modernization: Only call libxml_disable_entity_loader() in PHP < 8.

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This function has been deprecated in PHP 8.0 because in libxml 2.9.0, external entity loading is disabled by default, so this function is no longer needed to protect against XXE attacks.

Props jrf.
Fixes #50898.

git-svn-id: https://develop.svn.wordpress.org/trunk@48789 602fd350-edb4-49c9-b593-d223f7449a82
This commit is contained in:
Sergey Biryukov
2020-08-12 15:23:47 +00:00
parent 1bf0a780b3
commit ab9aee8af4
1 changed files with 12 additions and 2 deletions
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14
src/wp-includes/class-wp-oembed.php
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@@ -597,13 +597,23 @@ class WP_oEmbed {
return false;
}
$loader = libxml_disable_entity_loader( true );
if ( PHP_VERSION_ID < 80000 ) {
// This function has been deprecated in PHP 8.0 because in libxml 2.9.0, external entity loading
// is disabled by default, so this function is no longer needed to protect against XXE attacks.
// phpcs:ignore PHPCompatibility.FunctionUse.RemovedFunctions.libxml_disable_entity_loaderDeprecated
$loader = libxml_disable_entity_loader( true );
}
$errors = libxml_use_internal_errors( true );
$return = $this->_parse_xml_body( $response_body );
libxml_use_internal_errors( $errors );
libxml_disable_entity_loader( $loader );
if ( PHP_VERSION_ID < 80000 && isset( $loader ) ) {
// phpcs:ignore PHPCompatibility.FunctionUse.RemovedFunctions.libxml_disable_entity_loaderDeprecated
libxml_disable_entity_loader( $loader );
}
return $return;
}