// TODO MDL-46023 Replace this code with a call to the new library.
$origentity = libxml_disable_entity_loader(true);
$xml = simplexml_load_string($rawbody);
if (!$xml) {
libxml_disable_entity_loader($origentity);
throw new Exception('Invalid XML content');
}
libxml_disable_entity_loader($origentity);
$body = $xml->imsx_POXBody;
foreach ($body->children() as $child) {
$messagetype = $child->getName();
}
switch ($messagetype) {
case 'replaceResultRequest':
try {
$parsed = lti_parse_grade_replace_message($xml);
} catch (Exception $e) {
$responsexml = lti_get_response_xml('failure', $e->getMessage(), uniqid(), 'replaceResultResponse');
echo $responsexml->asXML();
break;
}
$ltiinstance = $DB->get_record('lti', array('id' => $parsed->instanceid));
if (!lti_accepts_grades($ltiinstance)) {
throw new Exception('Tool does not accept grades');
}
lti_verify_sourcedid($ltiinstance, $parsed);
lti_set_session_user($parsed->userid);
$gradestatus = lti_update_grade($ltiinstance, $parsed->userid, $parsed->launchid, $parsed->gradeval);
$responsexml = lti_get_response_xml($gradestatus ? 'success' : 'failure', 'Grade replace response', $parsed->messageid, 'replaceResultResponse');
echo $responsexml->asXML();
break;
/**
* This test has been disabled because, since its creation,
* the sourceId generation has changed and surely this is outdated.
* Some day these should be replaced by proper tests, but until then
* conformance tests say this is working. MDL-30347
*/
public function disabled_test_parse_grade_replace_message()
{
$message = '
<imsx_POXEnvelopeRequest xmlns = "http://www.imsglobal.org/services/ltiv1p1/xsd/imsoms_v1p0">
<imsx_POXHeader>
<imsx_POXRequestHeaderInfo>
<imsx_version>V1.0</imsx_version>
<imsx_messageIdentifier>999998123</imsx_messageIdentifier>
</imsx_POXRequestHeaderInfo>
</imsx_POXHeader>
<imsx_POXBody>
<replaceResultRequest>
<resultRecord>
<sourcedGUID>
<sourcedId>{"data":{"instanceid":"2","userid":"2"},"hash":"0b5078feab59b9938c333ceaae21d8e003a7b295e43cdf55338445254421076b"}</sourcedId>
</sourcedGUID>
<result>
<resultScore>
<language>en-us</language>
<textString>0.92</textString>
</resultScore>
</result>
</resultRecord>
</replaceResultRequest>
</imsx_POXBody>
</imsx_POXEnvelopeRequest>
';
$parsed = lti_parse_grade_replace_message(new SimpleXMLElement($message));
$this->assertEquals($parsed->userid, '2');
$this->assertEquals($parsed->instanceid, '2');
$this->assertEquals($parsed->sourcedidhash, '0b5078feab59b9938c333ceaae21d8e003a7b295e43cdf55338445254421076b');
$ltiinstance = (object) array('servicesalt' => '4e5fcc06de1d58.44963230');
lti_verify_sourcedid($ltiinstance, $parsed);
}
