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multiembedq2.php
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multiembedq2.php
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<?php
// multiembedq2.php: Embed one or more questions via an iframe
// Operates without requiring login
// (c) 2020 David Lippman
$init_skip_csrfp = true;
require_once "./init_without_validate.php";
require_once './assess2/AssessStandalone.php';
require_once "includes/JWT.php";
$assessver = 2;
$courseUIver = 2;
$assessUIver = 2;
$_SESSION = array();
$inline_choicemap = !empty($CFG['GEN']['choicesalt']) ? $CFG['GEN']['choicesalt'] : 'test';
$statesecret = !empty($CFG['GEN']['embedsecret']) ? $CFG['GEN']['embedsecret'] : 'test';
$cid = 'embedq';
$_SESSION['secsalt'] = "12345";
$myrights = 5;
$issigned = false;
// Get basic settings from JWT or query string
if (isset($_POST['state'])) {
$state = json_decode(json_encode(JWT::decode($_POST['state'], $statesecret)), true);
$QS = $state;
$QS['id'] = $state['qsid'];
} else {
$QS = $_GET;
}
if (empty($QS['id'])) {
echo 'Need to supply an id';
exit;
}
if (!is_array($QS['id'])) {
$QS['id'] = explode('-', $QS['id']);
}
$QS['id'] = array_map('trim', $QS['id']);
// set user preferences
$prefdefaults = array(
'mathdisp' => 6, //default is katex
'graphdisp' => 1,
'drawentry' => 1,
'useed' => 1,
'livepreview' => 1);
// override via cookie if set
if (!empty($_COOKIE["embedq2userprefs"])) {
$prefcookie = json_decode($_COOKIE["embedq2userprefs"], true);
}
$_SESSION['userprefs'] = array();
foreach ($prefdefaults as $key => $def) {
if (isset($QS[$key])) { // can overwrite via JWT
$_SESSION['userprefs'][$key] = filter_var($QS[$key], FILTER_SANITIZE_NUMBER_INT);
} else if (!empty($prefcookie) && isset($prefcookie[$key])) {
$_SESSION['userprefs'][$key] = filter_var($prefcookie[$key], FILTER_SANITIZE_NUMBER_INT);
} else {
$_SESSION['userprefs'][$key] = $def;
}
}
// override via query string or post value; record into cookie
if (isset($_REQUEST['graphdisp'])) { //currently same is used for graphdisp and drawentry
$_SESSION['userprefs']['graphdisp'] = filter_var($_REQUEST['graphdisp'], FILTER_SANITIZE_NUMBER_INT);
$_SESSION['userprefs']['drawentry'] = filter_var($_REQUEST['graphdisp'], FILTER_SANITIZE_NUMBER_INT);
setsecurecookie("embedq2userprefs", json_encode(array(
'graphdisp' => $_SESSION['userprefs']['graphdisp'],
'drawentry' => $_SESSION['userprefs']['drawentry'],
)), time() + 60 * 60 * 24 * 365);
}
foreach (array('graphdisp', 'mathdisp', 'useed') as $key) {
$_SESSION[$key] = $_SESSION['userprefs'][$key];
}
// defaults
$eqnhelper = 4;
$useeqnhelper = 4;
$showtips = 2;
$numq = count($QS['id']);
$a2 = new AssessStandalone($DBH);
if (isset($_POST['state'])) {
$state = json_decode(json_encode(JWT::decode($_POST['state'], $statesecret)), true);
} else {
$seeds = array();
for($qn=0; $qn<$numq; $qn++) {
$seeds[$qn] = rand(0, 9999)+10000;
}
$state = array(
'seeds' => $seeds,
'qsid' => $QS['id'],
'stuanswers' => array(),
'stuanswersval' => array(),
'scorenonzero' => array_fill(1, $numq, -1),
'scoreiscorrect' => array_fill(1, $numq, -1),
'partattemptn' => array_fill(0, $numq, array()),
'rawscores' => array_fill(0, $numq, array()),
);
}
if (isset($QS['jssubmit'])) {
$state['jssubmit'] = $QS['jssubmit'];
} else {
$state['jssubmit'] = 0;
}
if (isset($QS['showhints'])) {
$state['showhints'] = $QS['showhints'];
} else {
$state['showhints'] = 7;
}
if (isset($QS['maxtries'])) {
$state['maxtries'] = intval($QS['maxtries']);
} else {
$state['maxtries'] = 0;
}
if (isset($QS['showansafter'])) {
$state['showansafter'] = $QS['showansafter'];
} else if ($state['maxtries'] > 0) {
$state['showansafter'] = $state['maxtries'];
} else {
$state['showansafter'] = 1;
}
if (isset($QS['showscoredonsubmit'])) {
$state['showscoredonsubmit'] = $QS['showscoredonsubmit'];
} else {
$state['showscoredonsubmit'] = 1;
}
$state['hidescoremarkers'] = !$state['showscoredonsubmit'];
if (isset($QS['hidescoremarkers'])) {
$state['hidescoremarkers'] = $QS['hidescoremarkers'];
}
$state['showans'] = 0;
if (isset($QS['allowregen'])) {
$state['allowregen'] = $QS['allowregen'];
} else {
$state['allowregen'] = 1;
}
if (isset($QS['submitall'])) {
$state['submitall'] = $QS['submitall'];
} else {
$state['submitall'] = 0;
}
if (isset($QS['autoseq'])) {
$state['autoseq'] = $QS['autoseq'];
} else {
$state['autoseq'] = 1;
}
if (!empty($_POST['regen'])) {
$qntoregen = $_POST['regen'];
$seed = rand(0, 9999) + 10000;
$state['seeds'][$qntoregen] = $seed;
unset($state['stuanswers'][$qntoregen+1]);
unset($state['stuanswersval'][$qntoregenn+1]);
$state['scorenonzero'][$qntoregen+1] = -1;
$state['scoreiscorrect'][$qntoregen+1] = -1;
$state['partattemptn'][$qntoregen] = array();
$state['rawscores'][$qntoregen] = array();
}
$a2->setState($state);
if (isset($_POST['toscoreqn'])) {
$toscoreqn = json_decode($_POST['toscoreqn'], true);
$qns = array_keys($toscoreqn);
if (count($qns)>1) {
echo "Error - can only handle submitting one question at a time";
} else if (count($qns)==0) {
echo 'Error - nothing submitted';
exit;
}
$qn = $qns[0];
$parts_to_score = array();
if (isset($toscoreqn[$qn])) {
foreach ($toscoreqn[$qn] as $pn) {
$parts_to_score[$pn] = true;
};
}
$qsid = $QS['id'][$qn];
// load question data
$stm = $DBH->prepare("SELECT * FROM imas_questionset WHERE id=:id");
$stm->execute(array(':id' => $qsid));
$line = $stm->fetch(PDO::FETCH_ASSOC);
$a2->setQuestionData($qsid, $line);
$res = $a2->scoreQuestion($qn, $parts_to_score);
$jwtcontents = array(
'id' => $qsid,
'score' => round(array_sum($res['scores']),2),
'raw' => $res['raw'],
'allans' => $res['allans'],
'errors' => $res['errors'],
'state' => JWT::encode($a2->getState(), $statesecret)
);
$out = array('jwt'=>JWT::encode($jwtcontents, ''));
if ($state['showscoredonsubmit'] || !$res['allans']) {
$disp = $a2->displayQuestion($qn);
$out['disp'] = $disp;
}
echo json_encode($out);
exit;
} else if (isset($_POST['regen'])) {
$qn = intval($_POST['regen']);
$qsid = $QS['id'][$qn];
// clear values
$seed = rand(0, 9999) + 10000;
$state['seeds'][$qn] = $seed;
unset($state['stuanswers'][$qn+1]);
unset($state['stuanswersval'][$qn+1]);
$state['scorenonzero'][$qn+1] = -1;
$state['scoreiscorrect'][$qn+1] = -1;
$state['partattemptn'][$qn] = array();
$state['rawscores'][$qn] = array();
$a2->setState($state);
// load question data
$stm = $DBH->prepare("SELECT * FROM imas_questionset WHERE id=:id");
$stm->execute(array(':id' => $qsid));
$line = $stm->fetch(PDO::FETCH_ASSOC);
$a2->setQuestionData($qsid, $line);
$disp = $a2->displayQuestion($qn);
$out = array(
'state' => JWT::encode($a2->getState(), $statesecret),
'disp' => $disp
);
echo json_encode($out);
exit;
}
// load question data and load/set state
$ph = Sanitize::generateQueryPlaceholders($QS['id']);
$stm = $DBH->prepare("SELECT * FROM imas_questionset WHERE id IN ($ph)");
$stm->execute($QS['id']);
$qsdata = array();
while ($row = $stm->fetch(PDO::FETCH_ASSOC)) {
$qsdata[$row['id']] = $row;
}
$disps = array();
for ($qn=0; $qn < $numq; $qn++) {
$qsid = $QS['id'][$qn];
$a2->setQuestionData($qsid, $qsdata[$qsid]);
$disps[$qn] = $a2->displayQuestion($qn);
// force submitall
if ($state['submitall']) {
$disps[$qn]['jsparams']['submitall'] = 1;
}
}
if (isset($_GET['frame_id'])) {
$frameid = preg_replace('/[^\w:.-]/', '', $_GET['frame_id']);
} else {
$frameid = "embedq2-" . $qsid;
}
if (isset($_GET['theme'])) {
$theme = preg_replace('/\W/', '', $_GET['theme']);
$coursetheme = $theme . '.css';
}
$placeinhead = '<link rel="stylesheet" type="text/css" href="'.$staticroot.'/assess2/vue/css/chunk-common.css?v='.$lastvueupdate.'" />';
$placeinhead .= '<link rel="stylesheet" type="text/css" href="' . $staticroot . '/assess2/vue/css/index.css?v=' . $lastvueupdate . '" />';
$placeinhead .= '<link rel="stylesheet" type="text/css" href="' . $staticroot . '/assess2/print.css?v=' . $lastvueupdate . '" media="print">';
$placeinhead .= '<script src="' . $staticroot . '/mathquill/mathquill.min.js?v=022720" type="text/javascript"></script>';
if (!empty($CFG['assess2-use-vue-dev'])) {
$placeinhead .= '<script src="' . $staticroot . '/javascript/drawing.js?v=041920" type="text/javascript"></script>';
$placeinhead .= '<script src="' . $staticroot . '/javascript/AMhelpers2.js?v=052120" type="text/javascript"></script>';
$placeinhead .= '<script src="' . $staticroot . '/javascript/eqntips.js?v=041920" type="text/javascript"></script>';
$placeinhead .= '<script src="' . $staticroot . '/javascript/mathjs.js?v=20230729" type="text/javascript"></script>';
$placeinhead .= '<script src="' . $staticroot . '/mathquill/AMtoMQ.js?v=052120" type="text/javascript"></script>';
$placeinhead .= '<script src="' . $staticroot . '/mathquill/mqeditor.js?v=041920" type="text/javascript"></script>';
$placeinhead .= '<script src="' . $staticroot . '/mathquill/mqedlayout.js?v=041920" type="text/javascript"></script>';
} else {
$placeinhead .= '<script src="' . $staticroot . '/javascript/assess2_min.js?v='.$lastvueupdate.'" type="text/javascript"></script>';
}
$placeinhead .= '<script src="' . $staticroot . '/javascript/assess2supp.js?v=041522" type="text/javascript"></script>';
$placeinhead .= '<link rel="stylesheet" type="text/css" href="' . $staticroot . '/mathquill/mathquill-basic.css?v=021823">
<link rel="stylesheet" type="text/css" href="' . $staticroot . '/mathquill/mqeditor.css">';
// setup resize message sender
$placeinhead .= '<script type="text/javascript">
var frame_id = "' . $frameid . '";
function sendresizemsg() {
if(inIframe()){
var default_height = Math.max(
document.body.scrollHeight, document.body.offsetHeight)+20;
var wrap_height = default_height - document.getElementById("embedspacer").offsetHeight;
window.parent.postMessage( JSON.stringify({
subject: "lti.frameResize",
height: default_height,
wrapheight: wrap_height,
iframe_resize_id: "' . $frameid . '",
element_id: "' . $frameid . '",
frame_id: "' . $frameid . '"
}), "*");
}
}
$(function() {
$(document).on("mqeditor:show", function() {
$("#embedspacer").show();
sendresizemsg();
});
$(document).on("mqeditor:hide", function() {
$("#embedspacer").hide();
sendresizemsg();
});
});
if (mathRenderer == "Katex") {
window.katexDoneCallback = sendresizemsg;
} else if (typeof MathJax != "undefined") {
if (MathJax.startup) {
MathJax.startup.promise = MathJax.startup.promise.then(sendLTIresizemsg);
} else if (MathJax.Hub) {
MathJax.Hub.Queue(function () {
sendresizemsg();
});
}
} else {
$(function() {
sendresizemsg();
});
}
</script>
<style>
body { margin: 0;}
.question {
margin-top: 0 !important;
}
.questionpane {
margin-top: 0 !important;
}
#mqe-fb-spacer {
height: 0 !important;
}
</style>';
if ($_SESSION['mathdisp']==1 || $_SESSION['mathdisp']==3) {
//in case MathJax isn't loaded yet
$placeinhead .= '<script type="text/x-mathjax-config">
MathJax.Hub.Queue(function () {
sendresizemsg();
});
</script>';
}
$flexwidth = true; //tells header to use non _fw stylesheet
$nologo = true;
require_once "./header.php";
echo '<div><ul id="errorslist" style="display:none" class="small"></ul></div>';
for ($qn=0; $qn < $numq; $qn++) {
echo '<div class="questionwrap">';
if (!$state['jssubmit']) {
echo '<div id="results'.$qn.'"></div>';
}
echo '<div class="questionpane">';
echo '<div class="question" id="questionwrap'.$qn.'">';
echo '</div></div>';
if (!$state['jssubmit']) {
echo '<p>';
echo '<button type=button onclick="submitq('.$qn.')" class="primary">'._("Submit").'</button>';
if ($state['allowregen']) {
echo ' <button type=button onclick="regenq('.$qn.')" class="secondary">'._('Try a similar question').'</button>';
}
echo '</p>';
}
echo '</div>';
echo '<script>
$(function() {
showandinit('.$qn.','.json_encode($disps[$qn]).');
});
</script>';
}
echo '<input type=hidden name=toscoreqn id=toscoreqn value=""/>';
echo '<input type=hidden name=state id=state value="'.Sanitize::encodeStringForDisplay(JWT::encode($a2->getState(), $statesecret)).'" />';
echo '<div class="mce-content-body" style="text-align:right;font-size:70%;margin-right:5px;"><a style="color:#666" target="_blank" href="course/showlicense.php?id='.Sanitize::encodeUrlParam(implode('-', $QS['id'])).'">'._('License').'</a></div>';
if ($state['jssubmit']) {
echo '<div id="embedspacer" style="display:none;height:200px"> </div>';
} else {
echo '<div id="embedspacer" style="display:none;height:150px"> </div>';
}
$placeinfooter = '<div id="ehdd" class="ehdd" style="display:none;">
<span id="ehddtext"></span>
<span onclick="showeh(curehdd);" style="cursor:pointer;">'._('[more..]').'</span>
</div>
<div id="eh" class="eh"></div>';
require_once "./footer.php";