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[libxml] Unit test for libxml_disable_entity_loader()

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Summary:
Test to make sure libxml_disable_entity_loader() is behaving.
This commit is contained in:
Scott MacVicar 2014-01-05 02:11:05 -08:00
parent 1c586d4070
commit 24cc7c0be2
2 changed files with 42 additions and 0 deletions
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41
ext/libxml/tests/libxml_disable_entity_loader.phpt Normal file
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--TEST--
libxml_disable_entity_loader()
--SKIPIF--
<?php if (!extension_loaded('libxml') || !extension_loaded('dom') || defined('PHP_WINDOWS_VERSION_MAJOR')) die('skip'); ?>
--FILE--
<?php
$xml = <<<EOT
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE test [<!ENTITY xxe SYSTEM "XXE_URI">]>
<foo>&xxe;</foo>
EOT;
$xml = str_replace('XXE_URI', __DIR__ . '/libxml_disable_entity_loader_payload.txt', $xml);
function parseXML($xml) {
$doc = new DOMDocument();
$doc->resolveExternals = true;
$doc->substituteEntities = true;
$doc->validateOnParse = false;
$doc->loadXML($xml, 0);
return $doc->saveXML();
}
var_dump(strpos(parseXML($xml), 'SECRET_DATA') !== false);
var_dump(libxml_disable_entity_loader(true));
var_dump(strpos(parseXML($xml), 'SECRET_DATA') === false);
echo "Done\n";
?>
--EXPECTF--
bool(true)
bool(false)
Warning: DOMDocument::loadXML(): I/O warning : failed to load external entity "%s" in %s on line %d
Warning: DOMDocument::loadXML(): Failure to process entity xxe in Entity, line: %d in %s on line %d
Warning: DOMDocument::loadXML(): Entity 'xxe' not defined in Entity, line: %d in %s on line %d
bool(true)
Done

1
ext/libxml/tests/libxml_disable_entity_loader_payload.txt Normal file
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SECRET_DATA