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actions.php
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<?php
//IMathAS: Basic Actions
//(c) 2006 David Lippman
//Look to see if a hook file is defined, and include if it is
if (isset($CFG['hooks']['actions'])) {
require_once $CFG['hooks']['actions'];
}
require_once "includes/sanitize.php";
if (isset($_GET['greybox'])) {
$isgb = true;
$gb = '&greybox=true';
$flexwidth = true;
$nologo = true;
} else {
$isgb = false;
$gb = '';
}
if((isset($_SERVER['HTTPS']) && $_SERVER['HTTPS']=='on') || (isset($_SERVER['HTTP_X_FORWARDED_PROTO']) && $_SERVER['HTTP_X_FORWARDED_PROTO']=='https')) {
$urlmode = 'https://';
} else {
$urlmode = 'http://';
}
require_once "includes/password.php";
if (isset($_GET['action']) && $_GET['action']=="newuser") {
$init_session_start = true;
require_once "init_without_validate.php";
require_once "includes/newusercommon.php";
if (!isset($_SESSION['challenge']) || !isset($_POST['challenge']) ||
$_POST['challenge'] !== $_SESSION['challenge'] ||
!empty($_POST['hval']) ||
!isset($_SESSION['newuserstart']) || (time() - $_SESSION['newuserstart']) < 5
) {
echo "Invalid submission";
exit;
}
$_SESSION['challenge'] = '';
unset($_SESSION['newuserstart']);
$error = '';
if (isset($studentTOS) && !isset($_POST['agree'])) {
$error = "<p>"._("You must agree to the Terms and Conditions to set up an account")."</p>";
}
// Sanitize form data
$_POST['SID'] = Sanitize::stripHtmlTags(trim($_POST['SID']));
$_POST['email'] = Sanitize::emailAddress(trim($_POST['email']));
$_POST['firstname'] = Sanitize::stripHtmlTags(trim($_POST['firstname']));
$_POST['lastname'] = Sanitize::stripHtmlTags(trim($_POST['lastname']));
$_POST['courseid'] = Sanitize::courseId(trim($_POST['courseid']));
$error .= checkNewUserValidation();
if (isset($CFG['GEN']['COPPA']) && empty($_POST['over13'])) {
if (!is_numeric($_POST['courseid'])) {
$error = _('Invalid course id');
} else {
$query = "SELECT enrollkey,allowunenroll FROM imas_courses WHERE id=:cid AND (available=0 OR available=2)";
$stm = $DBH->prepare($query);
$stm->execute(array(':cid'=>$_POST['courseid']));
$line = $stm->fetch(PDO::FETCH_ASSOC);
if ($line==null) {
$error = _('Course not found');
} else if (($line['allowunenroll']&2)==2) {
$error = _('Course is closed for self enrollment');
} else if ($_POST['ekey']=="" && $line['enrollkey'] != '') {
$error = _('No enrollment key provided');
} else {
$keylist = array_map('trim',explode(';',$line['enrollkey']));
if (($p = array_search(strtolower(trim($_POST['ekey'])), array_map('strtolower', $keylist))) === false) {
$error = _('Incorrect enrollment key');
}
}
}
}
if ($error != '') {
require_once "header.php";
if ($gb == '') {
echo "<div class=breadcrumb><a href=\"index.php\">Home</a> > ",_("New User Signup"),"</div>\n";
}
echo '<div id="headerforms" class="pagetitle"><h1>',_('New User Signup'),'</h1></div>';
echo $error;
//call hook, if defined
if (function_exists('onNewUserError')) {
onNewUserError();
} else {
echo '<p><a href="forms.php?action=newuser">',_('Try Again'),'</a></p>';
}
require_once "footer.php";
exit;
}
if (isset($CFG['GEN']['newpasswords'])) {
$md5pw = password_hash($_POST['pw1'], PASSWORD_DEFAULT);
} else {
$md5pw = md5($_POST['pw1']);
}
if ($emailconfirmation) {$initialrights = 0;} else {$initialrights = 10;}
if (isset($_POST['msgnot'])) {
$msgnot = 1;
} else {
$msgnot = 0;
}
if (isset($CFG['GEN']['homelayout'])) {
$homelayout = $CFG['GEN']['homelayout'];
} else {
$homelayout = '|0,1,2||0,1';
}
if (isset($_POST['courseselect']) && $_POST['courseselect']>0) {
$_POST['courseid'] = Sanitize::courseId(trim($_POST['courseselect']));
$_POST['ekey'] = '';
}
if (!isset($_GET['confirmed'])) {
//look for existing account. ignore any LTI accounts
$stm = $DBH->prepare("SELECT SID FROM imas_users WHERE email=:email AND SID NOT LIKE 'lti-%'");
$stm->execute(array(':email'=>$_POST['email']));
if ($stm->rowCount()>0) {
$nologo = true;
$_SESSION['newuserstart'] = time() - 10;
require_once "header.php";
echo '<form method="post" action="actions.php?action=newuser&confirmed=true'.$gb.'">';
echo '<input type="hidden" name="SID" value="'.Sanitize::encodeStringForDisplay($_POST['SID']).'" />';
echo '<input type="hidden" name="firstname" value="'.Sanitize::encodeStringForDisplay($_POST['firstname']).'" />';
echo '<input type="hidden" name="lastname" value="'.Sanitize::encodeStringForDisplay($_POST['lastname']).'" />';
echo '<input type="hidden" name="email" value="'.Sanitize::encodeStringForDisplay($_POST['email']).'" />';
echo '<input type="hidden" name="pw1" value="'.Sanitize::encodeStringForDisplay($_POST['pw1']).'" />';
echo '<input type="hidden" name="pw2" value="'.Sanitize::encodeStringForDisplay($_POST['pw2']).'" />';
echo '<input type="hidden" name="courseid" value="'.Sanitize::encodeStringForDisplay($_POST['courseid']).'" />';
echo '<input type="hidden" name="ekey" value="'.Sanitize::encodeStringForDisplay($_POST['ekey']).'" />';
$_SESSION['challenge'] = uniqid();
echo '<input type=hidden name=challenge value="'.Sanitize::encodeStringForDisplay($_SESSION['challenge']).'"/>';
if (isset($_POST['agree'])) {
echo '<input type="hidden" name="agree" value="1" />';
}
echo '<p> </p>';
echo '<p>',_('It appears an account already exists with the same email address you just entered'),'. ';
echo sprintf(_('If you are creating an account because you forgot your username, you can %s look up your username %s instead.'),'<a href="forms.php?action=lookupusername">','</a>'),'</p>';
echo '<input type="submit" value="',_('Create new account anyways'),'"/>';
echo '</form>';
require_once "footer.php";
exit;
}
}
$jsondata = [];
if (isset($CFG['GEN']['COPPA']) && empty($_POST['over13'])) {
$jsondata['under13'] = 1;
}
$query = "INSERT INTO imas_users (SID, password, rights, FirstName, LastName, email, msgnotify, homelayout, jsondata) ";
$query .= "VALUES (:SID, :password, :rights, :FirstName, :LastName, :email, :msgnotify, :homelayout, :jsondata)";
$stm = $DBH->prepare($query);
$stm->execute(array(
':SID'=>$_POST['SID'],
':password'=>$md5pw,
':rights'=>$initialrights,
':FirstName'=>Sanitize::stripHtmlTags($_POST['firstname']),
':LastName'=>Sanitize::stripHtmlTags($_POST['lastname']),
':email'=>Sanitize::emailAddress($_POST['email']),
':msgnotify'=>$msgnot,
':homelayout'=>$homelayout,
':jsondata'=>json_encode($jsondata)
));
$newuserid = $DBH->lastInsertId();
if ($emailconfirmation) {
$id = $newuserid;
$message = "<h3>".sprintf(_("This is an automated message from %s. Do not respond to this email"),$installname)."</h3>\r\n";
$message .= "<p>".sprintf(_("To complete your %s registration, please click on the following link, or copy and paste it into your webbrowser:"),$installname)."</p>\r\n";
$message .= "<a href=\"" . $GLOBALS['basesiteurl'] . "/actions.php?action=confirm&id=$id\">";
$message .= $GLOBALS['basesiteurl'] . "/actions.php?action=confirm&id=$id</a>\r\n";
require_once "./includes/email.php";
send_email($_POST['email'], $sendfrom, $installname._(' Confirmation'), $message, array(), array(), 10);
require_once "header.php";
if ($gb == '') {
echo "<div class=breadcrumb><a href=\"index.php\">Home</a> > ",_("New User Signup"),"</div>\n";
}
echo '<div id="headerforms" class="pagetitle"><h1>',_('New User Signup'),'</h1></div>';
echo _("Registration recorded. You should shortly receive an email with confirmation instructions.");
echo "<a href=\"$imasroot/index.php\">",_("Back to main login page"),"</a>\n";
require_once "footer.php";
} else {
$pagetitle = _('Account Created');
require_once "header.php";
echo "<div class=breadcrumb><a href=\"index.php\">Home</a> > ",_("New User Signup"),"</div>\n";
echo '<div id="headerforms" class="pagetitle"><h1>',_('New User Signup'),'</h1></div>';
echo "<p>",sprintf(_("Your account with username %s has been created. If you forget your password, you can ask your instructor to reset your password or use the forgotten password link on the login page."),"<b>" . Sanitize::encodeStringForDisplay($_POST['SID']) . "</b>"),"</p>\n";
if (trim($_POST['courseid'])!='') {
$error = '';
if (!is_numeric($_POST['courseid'])) {
$error = _('Invalid course id');
} else {
$query = "SELECT enrollkey,allowunenroll,deflatepass,msgset FROM imas_courses WHERE id=:cid AND (available=0 OR available=2)";
$stm = $DBH->prepare($query);
$stm->execute(array(':cid'=>$_POST['courseid']));
$line = $stm->fetch(PDO::FETCH_ASSOC);
if ($line==null) {
$error = _('Course not found');
} else if (($line['allowunenroll']&2)==2) {
$error = _('Course is closed for self enrollment');
} else if ($_POST['ekey']=="" && $line['enrollkey'] != '') {
$error = _('No enrollment key provided');
} else {
$keylist = array_map('trim',explode(';',$line['enrollkey']));
if (($p = array_search(strtolower(trim($_POST['ekey'])), array_map('strtolower', $keylist))) === false) {
$error = _('Incorrect enrollment key');
} else {
$_POST['ekey'] = $keylist[$p];
require_once './includes/setSectionGroups.php';
if (count($keylist)>1) {
$query = "INSERT INTO imas_students (userid,courseid,section,latepass) VALUES (:uid,:cid,:section,:latepass);";
$array = array(
':uid'=>$newuserid,
':cid'=>$_POST['courseid'],
':section'=>$_POST['ekey'],
':latepass'=>$line['deflatepass']
);
setSectionGroups($newuserid, $_POST['courseid'], $_POST['ekey']);
} else {
$query = "INSERT INTO imas_students (userid,courseid,latepass) VALUES (:uid,:cid,:latepass);";
$array = array(':uid'=>$newuserid, ':cid'=>$_POST['courseid'], ':latepass'=>$line['deflatepass']);
setSectionGroups($newuserid, $_POST['courseid'], '');
}
$stm = $DBH->prepare($query);
$stm->execute($array);
echo '<p>',sprintf(_("You have been enrolled in course ID %s"),Sanitize::encodeStringForDisplay($_POST['courseid'])),'</p>';
sendMsgOnEnroll($line['msgset'], $_POST['courseid'], $newuserid);
}
}
}
if ($error != '') {
echo "<p>$error, ",_("so we were not able to enroll you in your course. After you log in, you can try enrolling again. You do <b>not</b> need to create another account."),"</p>";
}
}
echo "<p>",sprintf(_("You can now %s return to the login page %s and login with your new username and password"),"<a href=\"" . $GLOBALS['basesiteurl'] . "/index.php\">","</a>"),"</p>";
require_once "footer.php";
}
//header('Location: ' . $urlmode . $_SERVER['HTTP_HOST'] . rtrim(dirname($_SERVER['PHP_SELF']), '/\\') . "/index.php");
exit;
} else if (isset($_GET['action']) && $_GET['action']=="confirm") {
require_once "init_without_validate.php";
$query = "UPDATE imas_users SET rights=10 WHERE id=:id AND rights=0";
$stm = $DBH->prepare($query);
$stm->execute(array(':id'=>Sanitize::onlyInt($_GET['id'])));
if ($stm->rowCount()>0) {
require_once "header.php";
echo sprintf(_("Confirmed. Please %s Log In %s"),"<a href=\"index.php\">","</a>\n");
require_once "footer.php";
} else {
require_once "header.php";
echo _("Error").".\n";
require_once "footer.php";
}
exit;
} else if (isset($_GET['action']) && $_GET['action']=="resetpw") {
$init_session_start = true;
require_once "init_without_validate.php";
if (isset($_POST['username'])) {
if (!isset($_SESSION['challenge']) || $_POST['challenge'] !== $_SESSION['challenge'] ||
!empty($_POST['terms']) ||
!isset($_SESSION['resetpwstart']) || (time() - $_SESSION['resetpwstart']) < 3
) {
echo "Invalid submission";
exit;
}
$_SESSION['challenge'] = '';
unset($_SESSION['resetpwstart']);
$query = "SELECT id,email,rights,jsondata FROM imas_users WHERE SID=:sid";
$stm = $DBH->prepare($query);
$stm->execute(array(':sid'=>$_POST['username']));
if ($stm->rowCount()>0) {
list($id,$email,$rights,$jsondata) = $stm->fetch(PDO::FETCH_NUM);
$jsondata = json_decode($jsondata,true);
if (isset($jsondata['lastemail']) && time() - $jsondata['lastemail'] < 60) {
echo 'Please wait and try again';
exit;
}
if (substr($email,0,7)==='BOUNCED') {
require_once "header.php";
echo '<p>';
echo _('The email address on record for this username is invalid.').' ';
if ($myrights < 20) {
echo _('Contact your teacher for help resetting your password.');
} else {
echo _('Contact the system administrator for help resetting your password:').' ';
$addr = isset($accountapproval) ? $accountapproval : $sendfrom;
echo $addr.'.';
}
echo '</p>';
require_once "footer.php";
exit;
}
if (is_array($jsondata)) {
$jsondata['lastemail'] = time();
} else {
$jsondata = ['lastemail' => time()];
}
$query = "UPDATE imas_users SET jsondata=:jsondata WHERE id=:id";
$stm = $DBH->prepare($query);
$stm->execute(array(':jsondata'=>json_encode($jsondata), ':id'=>$id));
require_once './includes/passwordreset.php';
$code = make_pwreset_link($id);
$message = "<h3>".sprintf(_('This is an automated message from %s. Do not respond to this email'),$installname)."</h3>\r\n";
$message .= "<p>"._('Your username was entered in the Reset Password page. If you did not do this, you may ignore and delete this message. ');
$message .= _("If you did request a password reset, click the link below, or copy and paste it into your browser's address bar. You will then be prompted to choose a new password.")."</p>";
$message .= "<a href=\"" . $GLOBALS['basesiteurl'] . "/forms.php?action=resetpw&code=$code\">";
$message .= $GLOBALS['basesiteurl'] . "/forms.php?action=resetpw&code=$code</a>\r\n";
require_once "./includes/email.php";
send_email($email, $sendfrom, $installname._(' Password Reset Request'), $message, array(), array(), 10);
require_once "header.php";
echo '<p>',_('An email with a password reset link has been sent your email address on record'),': <b>'.Sanitize::emailAddress($email).'.</b><br/> ';
echo _('If you do not see it in a few minutes, check your spam or junk box to see if the email ended up there.'),'<br/>';
echo sprintf(_('It may help to add %s to your contacts list.'),'<b>'.Sanitize::encodeStringForDisplay($sendfrom).'</b>'),'</p>';
echo '<p>',_('If you still have trouble or the wrong email address is on file, contact your instructor - they can reset your password for you.'),'</p>';
if (function_exists('getInstructorSupport')) {
getInstructorSupport($rights);
}
require_once "footer.php";
exit;
} else {
echo _("Invalid Username"),". <a href=\"index.php$gb\">",_("Try again"),"</a>";
exit;
}
header('Location: ' . $GLOBALS['basesiteurl'] . "/index.php?r=" . Sanitize::randomQueryStringParam());
} else if (isset($_POST['pw1'])) {
if ($_POST['pw1']!=$_POST['pw2']) {
echo _('Passwords do not match'),'. <a href="forms.php?action=resetpw&code='.Sanitize::encodeUrlParam($_POST['code'])
.'&id='.Sanitize::encodeUrlParam($_POST['id']).'">',_('Try again'),'</a>';
exit;
}
require_once './includes/passwordreset.php';
$linkdata = verify_pwreset_link($_POST['code']);
if (isset($linkdata['uid'])) {
if (isset($CFG['GEN']['newpasswords'])) {
$newpw = password_hash($_POST['pw1'], PASSWORD_DEFAULT);
} else {
$newpw = md5($_POST['pw1']);
}
$query = "UPDATE imas_users SET password=:newpw WHERE id=:id LIMIT 1";
$stm = $DBH->prepare($query);
$stm->execute(array(':id'=>$linkdata['uid'], ':newpw'=>$newpw));
echo _("Password Reset"),". ";
echo "<a href=\"index.php\">",_("Login with your new password"),"</a>";
} else {
echo _('Invalid code');
}
} else if (isset($_GET['code'])) {
//moved to forms.php - keep redirect for to keep old links working for now.
header('Location: ' . $GLOBALS['basesiteurl'] . '/forms.php?action=resetpw&code='.Sanitize::encodeUrlParam($_GET['code']) . "&r=" . Sanitize::randomQueryStringParam());
}
exit;
} else if (isset($_GET['action']) && $_GET['action']=="lookupusername") {
$init_session_start = true;
require_once "init_without_validate.php";
if (!isset($_SESSION['challenge']) || !isset($_POST['challenge']) || $_POST['challenge'] !== $_SESSION['challenge'] ||
!empty($_POST['terms']) ||
!isset($_SESSION['lookupusernamestart']) || (time() - $_SESSION['lookupusernamestart']) < 3
) {
echo (!isset($_SESSION['challenge']) || !isset($_POST['challenge']) || $_POST['challenge'] !== $_SESSION['challenge']) ? 'challenge bad' : 'challenge ok';
if (isset($_SESSION['lookupusernamestart']) && (time() - $_SESSION['lookupusernamestart']) < 5) { echo 'time blocked';}
echo "Invalid submission";
exit;
}
$_SESSION['challenge'] = '';
unset($_SESSION['lookupusernamestart']);
$query = "SELECT id,SID,lastaccess,jsondata FROM imas_users WHERE email=:email AND SID NOT LIKE 'lti-%'";
$stm = $DBH->prepare($query);
$stm->execute(array(':email'=>$_POST['email']));
if ($stm->rowCount() > 0) {
$cnt = $stm->rowCount();
$message = "<h3>".sprintf(_("This is an automated message from %s. Do not respond to this email"),$installname)."</h3>\r\n";
$message .= "<p>".sprintf(_("Your email was entered in the Username Lookup page on %s. If you did not do this, you may ignore and delete this message."),$installname)." ";
$message .= _("All usernames using this email address are listed below")."</p><p>";
$ids = array();
while ($row = $stm->fetch(PDO::FETCH_ASSOC)) {
$jsondata = json_decode($row['jsondata'],true);
if (isset($jsondata['lastemail']) && time() - $jsondata['lastemail'] < 60) {
echo 'Please wait and try again';
exit;
}
$ids[] = $row['id'];
if ($row['lastaccess']==0) {
$lastlogin = _("Never");
} else {
$lastlogin = date("n/j/y g:ia",$row['lastaccess']);
}
$message .= _("Username").": <b>{$row['SID']}</b>. "._("Last logged in").": $lastlogin<br/>";
if (is_array($jsondata)) {
$jsondata['lastemail'] = time();
} else {
$jsondata = ['lastemail' => time()];
}
$query = "UPDATE imas_users SET jsondata=:jsondata WHERE id=:id";
$stm = $DBH->prepare($query);
$stm->execute(array(':jsondata'=>json_encode($jsondata), ':id'=>$row['id']));
}
$message .= "</p><p>"._("If you forgot your password, use the Lost Password link at the login page.")."</p>";
require_once "./includes/email.php";
send_email($_POST['email'], $sendfrom, $installname._(' Username Request'), $message, array(), array(), 10);
echo $cnt . _(" usernames match this email address and were emailed"),". <a href=\"index.php\">",_("Return to login page"),"</a>";
} else {
$query = "SELECT SID,lastaccess FROM imas_users WHERE email=:email AND SID LIKE 'lti-%'";
$stm = $DBH->prepare($query);
$stm->execute(array(':email'=>$_POST['email']));
if ($stm->rowCount() > 0) {
echo _("Your account can only be accessed through your school's learning management system.")," <a href=\"index.php\">",_("Return to login page"),"</a>";
} else {
echo _("No usernames match this email address, or the email address provided is invalid.")," <a href=\"index.php\">",_("Return to login page"),"</a>";
}
}
exit;
} else if (isset($_GET['action']) && $_GET['action']=="checkusername") {
require_once "init_without_validate.php";
if (isset($_GET['originalSID']) && $_GET['originalSID']==$_GET['SID']) {
echo "true";
exit;
}
$stm = $DBH->prepare("SELECT id FROM imas_users WHERE SID=:SID");
$stm->execute(array(':SID'=>$_GET['SID']));
if ($stm->rowCount()>0) {
echo "false";
} else {
echo "true";
}
exit;
}
require_once "init.php";
if (isset($_GET['action']) && $_GET['action']=="logout") {
$_SESSION = array();
if (isset($_COOKIE[session_name()])) {
setcookie(session_name(), '', time()-42000, '/', '', false, true);
}
session_destroy();
} else if (isset($_GET['action']) && ($_GET['action']=="chgpwd" || $_GET['action']=="forcechgpwd")) {
$stm = $DBH->prepare("SELECT password,email,jsondata,mfa FROM imas_users WHERE id=:uid");
$stm->execute(array(':uid'=>$userid));
$line = $stm->fetch(PDO::FETCH_ASSOC);
if ($line['mfa'] !== '') {
$mfadata = json_decode($line['mfa'], true);
require_once 'includes/GoogleAuthenticator.php';
$MFA = new GoogleAuthenticator();
if (!$MFA->verifyCode($mfadata['secret'], $_POST['mfa'])) {
// MFA ok
require_once "header.php";
echo "2-factor authentication verification failed. <a href=\"forms.php?action=chgpwd$gb\">Try Again</a>\n";
require_once "footer.php";
exit;
}
}
if ((md5($_POST['oldpw'])==$line['password'] || (isset($CFG['GEN']['newpasswords']) && password_verify($_POST['oldpw'],$line['password']))) && ($_POST['pw1'] == $_POST['pw2']) && $myrights>5) {
if (isset($CFG['GEN']['newpasswords'])) {
$newpw = password_hash($_POST['pw1'], PASSWORD_DEFAULT);
} else {
$newpw =md5($_POST['pw1']);
}
$stm = $DBH->prepare("UPDATE imas_users SET password=:newpw,forcepwreset=0 WHERE id=:uid LIMIT 1");
$stm->execute(array(':uid'=>$userid, ':newpw'=>$newpw));
$jsondata = json_decode($line['jsondata'],true);
if ($_GET['action']=="chgpwd") {
require_once "./includes/email.php";
$message = '<p><b>'._('This is an automated message. Do not reply to this email.').'</b></p>';
$message .= '<p>'.sprintf(_('Hi, your account details on %s were recently changed.'), $installname).' ';
$message .= _('Your password was changed.');
$message .= '</p><p>'._('If this was you, you can disregard this email.').' ';
$message .= _('If you did not make these changes, please log into your account and correct the changes and change your password.').' ';
require_once './includes/passwordreset.php';
$code = make_pwreset_link($userid, true);
$message .= _('If you are unable to log into your account, use the following link.'). ' ';
$message .= '<a href="' . $GLOBALS['basesiteurl'] . "/forms.php?action=resetpw&code=$code\">";
$message .= _('Reset Password').'</a></p>';
send_email($line['email'], $sendfrom,
_('Alert:'). ' '.$installname.' '._('Account Activity'),
$message, array(), array(), 10
);
if (is_array($jsondata)) {
$jsondata['lastemail'] = time();
} else {
$jsondata = ['lastemail' => time()];
}
$query = "UPDATE imas_users SET jsondata=:jsondata WHERE id=:id";
$stm = $DBH->prepare($query);
$stm->execute(array(':jsondata'=>json_encode($jsondata), ':id'=>$userid));
}
// record last password update time
$query = "UPDATE imas_users SET lastemail=:now WHERE id=:id";
$stm = $DBH->prepare($query);
$stm->execute(array(':now'=>time(), ':id'=>$userid));
$_SESSION['started'] = time()+1;
} else {
echo "<html><body>",_("Password change failed"),". <a href=\"forms.php?action=".Sanitize::simpleString($_GET['action']).$gb."\">",_("Try Again"),"</a>\n";
echo "</body></html>\n";
exit;
}
} else if (isset($_GET['action']) && $_GET['action']=="enroll") {
if ($myrights < 6) {
echo "<html><body>\n",_("Error: Guests can't enroll in courses"),"</body></html";
exit;
}
if (isset($_POST['courseselect']) && $_POST['courseselect']>0) {
$_POST['cid'] = $_POST['courseselect'];
$_POST['ekey'] = '';
}
$pagetopper = '';
if ($gb == '') {
$pagetopper .= "<div class=breadcrumb><a href=\"index.php\">"._("Home")."</a> > "._("Enroll in a Course")."</div>\n";
}
$pagetopper .= '<div id="headerforms" class="pagetitle"><h1>'._('Enroll in a Course').'</h1></div>';
if (empty($_POST['cid']) || !is_numeric($_POST['cid'])) {
require_once "header.php";
echo $pagetopper;
echo _("Please include Course ID.")," <a href=\"forms.php?action=enroll$gb\">",_("Try Again"),"</a>\n";
require_once "footer.php";
exit;
}
$stm = $DBH->prepare("SELECT enrollkey,allowunenroll,deflatepass,msgset FROM imas_courses WHERE id = :cid AND (available=0 OR available=2)");
$stm->execute(array(':cid'=>$_POST['cid']));
$line = $stm->fetch(PDO::FETCH_ASSOC);
if ($line === false) {
require_once "header.php";
echo $pagetopper;
echo _("Course not found.")," <a href=\"forms.php?action=enroll$gb\">",_("Try Again"),"</a>\n";
require_once "footer.php";
exit;
} else if (($line['allowunenroll']&2)==2) {
require_once "header.php";
echo $pagetopper;
echo _("Course is closed for self enrollment. Contact your instructor for access.")," <a href=\"index.php\">",_("Return to home page."),"</a>\n";
require_once "footer.php";
exit;
} else if ($_POST['ekey']=="" && $line['enrollkey'] != '') {
require_once "header.php";
echo $pagetopper;
echo _("Please include Enrollment Key.")," <a href=\"forms.php?action=enroll$gb\">",_("Try Again"),"</a>\n";
require_once "footer.php";
exit;
} else {
$stm = $DBH->prepare("SELECT id FROM imas_teachers WHERE userid=:uid AND courseid=:cid");
$stm->execute(array(':uid'=>$userid, ':cid'=>$_POST['cid']));
if ($stm->rowCount() > 0) {
require_once "header.php";
echo $pagetopper;
echo _("You are a teacher for this course, and can't enroll as a student. Use Student View to see the class from a student's perspective, or create a dummy student account. ");
echo _("Click on the course name on the <a href=\"index.php\">main page</a> to access the course"),"\n";
require_once "footer.php";
exit;
}
$stm = $DBH->prepare("SELECT id FROM imas_tutors WHERE userid=:uid AND courseid=:cid");
$stm->execute(array(':uid'=>$userid, ':cid'=>$_POST['cid']));
if ($stm->rowCount() > 0) {
require_once "header.php";
echo $pagetopper;
echo _("You are a tutor for this course, and can't enroll as a student. ");
echo _("Click on the course name on the <a href=\"index.php\">main page</a> to access the course"),"\n";
require_once "footer.php";
exit;
}
$stm = $DBH->prepare("SELECT id FROM imas_students WHERE userid=:uid AND courseid=:cid");
$stm->execute(array(':uid'=>$userid, ':cid'=>$_POST['cid']));
if ($stm->rowCount() > 0) {
require_once "header.php";
echo $pagetopper;
echo _("You are already enrolled in the course. Click on the course name on the <a href=\"index.php\">main page</a> to access the course"),"\n";
require_once "footer.php";
exit;
} else {
$keylist = array_map('trim',explode(';',$line['enrollkey']));
if (($p = array_search(strtolower(trim($_POST['ekey'])), array_map('strtolower', $keylist))) === false) {
require_once "header.php";
echo $pagetopper;
echo _("Incorrect Enrollment Key.")," <a href=\"forms.php?action=enroll$gb\">",_("Try Again"),"</a>\n";
require_once "footer.php";
exit;
} else {
$_POST['ekey'] = $keylist[$p];
require_once './includes/setSectionGroups.php';
if (count($keylist)>1) {
$query = "INSERT INTO imas_students (userid,courseid,section,latepass) VALUES (:uid,:cid,:section,:latepass);";
$array = array(':uid'=>$userid, ':cid'=>$_POST['cid'], ':section'=>$_POST['ekey'],':latepass'=>$line['deflatepass']);
setSectionGroups($userid, $_POST['cid'], $_POST['ekey']);
} else {
$query = "INSERT INTO imas_students (userid,courseid,latepass) VALUES (:uid,:cid,:latepass);";
$array = array(':uid'=>$userid, ':cid'=>$_POST['cid'], ':latepass'=>$line['deflatepass']);
setSectionGroups($userid, $_POST['cid'], '');
}
$stm = $DBH->prepare($query);
$stm->execute($array);
sendMsgOnEnroll($line['msgset'], $_POST['cid'], $userid);
//call hook, if defined
if (function_exists('onEnroll')) {
onEnroll($_POST['cid']);
}
require_once "header.php";
echo $pagetopper;
echo '<p>',_('You have been enrolled in course ID ').Sanitize::courseId($_POST['cid']).'</p>';
echo "<p>",_("Return to the <a href=\"index.php\">main page</a> and click on the course name to access the course"),"</p>";
require_once "footer.php";
exit;
}
//$query = "INSERT INTO imas_students (userid,courseid) VALUES ('$userid','{$_POST['cid']}');";
//mysql_query($query) or die("Query failed : " . mysql_error());
}
}
} else if (isset($_POST['action']) && $_POST['action']=="unenroll") {
if ($myrights < 6) {
echo "<html><body>\n",_("Error: Guests can't unenroll from courses"),"</body></html>";
exit;
}
if (!isset($_GET['cid'])) {
require_once "header.php";
echo _("Course ID not specified.")," <a href=\"index.php\">",_("Try Again"),"</a>\n";
require_once "footer.php";
exit;
}
$cid = Sanitize::courseId($_GET['cid']);
$stm = $DBH->prepare("SELECT allowunenroll FROM imas_courses WHERE id=:cid");
$stm->execute(array(':cid'=>$cid));
if ($stm->fetchColumn()==1) {
$stm = $DBH->prepare("DELETE FROM imas_students WHERE userid=:uid AND courseid=:cid");
$stm->execute(array(':uid'=>$userid,':cid'=>$cid));
/*
$stm = $DBH->prepare("SELECT id FROM imas_assessments WHERE courseid=:cid");
$stm->execute(array(':cid'=>$cid));
while ($row = $stm->fetch(PDO::FETCH_ASSOC)) {
$stm = $DBH->prepare("DELETE FROM imas_assessment_sessions WHERE assessmentid=:aid AND userid=:uid");
$stm->execute(array(':uid'=>$userid,':aid'=>$row['id']));
$stm = $DBH->prepare("DELETE FROM imas_exceptions WHERE assessmentid=:aid AND itemtype='A' AND userid=:uid");
$stm->execute(array(':uid'=>$userid,':aid'=>$row['id']));
}
*/
$stm = $DBH->prepare("DELETE FROM imas_assessment_sessions WHERE assessmentid IN (SELECT id FROM imas_assessments WHERE courseid=:cid) AND userid=:uid");
$stm->execute(array(':uid'=>$userid,':cid'=>$cid));
$stm = $DBH->prepare("DELETE FROM imas_assessment_records WHERE assessmentid IN (SELECT id FROM imas_assessments WHERE courseid=:cid) AND userid=:uid");
$stm->execute(array(':uid'=>$userid,':cid'=>$cid));
$stm = $DBH->prepare("DELETE FROM imas_exceptions WHERE itemtype='A' AND assessmentid IN (SELECT id FROM imas_assessments WHERE courseid=:cid) AND userid=:uid");
$stm->execute(array(':uid'=>$userid,':cid'=>$cid));
$stm = $DBH->prepare("DELETE FROM imas_drillassess_sessions WHERE drillassessid IN (SELECT id FROM imas_drillassess WHERE courseid=:cid) AND userid=:uid");
$stm->execute(array(':uid'=>$userid,':cid'=>$cid));
//}
$stm = $DBH->prepare("DELETE FROM imas_grades WHERE gradetype='offline' AND gradetypeid IN (SELECT id FROM imas_gbitems WHERE courseid=:cid) AND userid=:uid");
$stm->execute(array(':uid'=>$userid,':cid'=>$cid));
// }
//}
$query = "DELETE FROM imas_forum_views WHERE userid=:uid AND threadid IN ";
$query .= "(SELECT ifp.threadid FROM imas_forum_posts AS ifp JOIN imas_forums ON ifp.forumid=imas_forums.id WHERE imas_forums.courseid=:cid)";
$stm = $DBH->prepare($query);
$stm->execute(array(':uid'=>$userid,':cid'=>$cid));
$stm = $DBH->prepare("DELETE FROM imas_grades WHERE gradetype='forum' AND gradetypeid IN (SELECT id FROM imas_forums WHERE courseid=:cid) AND userid=:uid");
$stm->execute(array(':uid'=>$userid,':cid'=>$cid));
$query = "DELETE FROM imas_exceptions WHERE (itemtype='F' OR itemtype='P' OR itemtype='R') AND userid=:uid AND assessmentid IN ";
$query .= "(SELECT id FROM imas_forums WHERE courseid=:cid)";
$stm = $DBH->prepare($query);
$stm->execute(array(':uid'=>$userid,':cid'=>$cid));
}
} else if (isset($_GET['action']) && $_GET['action']=="chguserinfo") {
$pagetopper = '';
if ($gb == '') {
$pagetopper .= "<div class=breadcrumb><a href=\"index.php\">Home</a> > Modify User Profile</div>\n";
}
$pagetopper .= '<div id="headerforms" class="pagetitle"><h1>Modify User Profile</h1></div>';
require_once 'includes/userpics.php';
if (isset($_POST['msgnot'])) {
$msgnot = 1;
} else {
$msgnot = 0;
}
if (isset($_POST['qrd']) || $myrights<20) {
$qrightsdef = 0;
} else {
$qrightsdef = 2;
}
if (isset($_POST['usedeflib'])) {
$usedeflib = 1;
} else {
$usedeflib = 0;
}
if ($myrights<20) {
$deflib = 0;
} else {
$deflib = $_POST['libs'];
}
$homelayout[0] = array();
$homelayout[1] = array(0,1,2);
$homelayout[2] = array();
if (isset($_POST['homelayout10'])) {
$homelayout[2][] = 10;
}
if (isset($_POST['homelayout11'])) {
$homelayout[2][] = 11;
}
$homelayout[3] = array();
if (isset($_POST['homelayout3-0'])) {
$homelayout[3][] = 0;
}
if (isset($_POST['homelayout3-1'])) {
$homelayout[3][] = 1;
}
foreach ($homelayout as $k=>$v) {
$homelayout[$k] = implode(',',$v);
}
$perpage = intval($_POST['perpage']);
if (isset($CFG['GEN']['fixedhomelayout']) && $CFG['GEN']['homelayout']) {
$deflayout = explode('|',$CFG['GEN']['homelayout']);
foreach ($CFG['GEN']['fixedhomelayout'] as $k) {
$homelayout[$k] = $deflayout[$k];
}
}
$layoutstr = implode('|',$homelayout);
if (is_uploaded_file($_FILES['stupic']['tmp_name'])) {
processImage($_FILES['stupic'],$userid,200,200);
processImage($_FILES['stupic'],'sm'.$userid,40,40);
$chguserimg = ",hasuserimg=1";
} else if (isset($_POST['removepic'])) {
deletecoursefile('userimg_'.$userid.'.jpg');
deletecoursefile('userimg_sm'.$userid.'.jpg');
$chguserimg = ",hasuserimg=0";
} else {
$chguserimg = '';
}
//DEB $query = "UPDATE imas_users SET FirstName='{$_POST['firstname']}',LastName='{$_POST['lastname']}',email='{$_POST['email']}',msgnotify=$msgnot,qrightsdef=$qrightsdef,deflib='$deflib',usedeflib='$usedeflib',homelayout='$layoutstr',theme='{$_POST['theme']}',listperpage='$perpage'$chguserimg ";
$stm = $DBH->prepare("SELECT email,jsondata,mfa,password FROM imas_users WHERE id=?");
$stm->execute(array($userid));
list($old_email,$jsondata,$lastmfa,$oldpw) = $stm->fetch(PDO::FETCH_NUM);
if ($lastmfa !== '') {
$mfadata = json_decode($lastmfa, true);
if (!empty($mfadata['mfatype']) && $mfadata['mfatype'] == 'admin') {
$lastmfatype = 1;
} else {
$lastmfatype = 2;
}
} else {
$lastmfatype = 0;
}
if (isset($_POST['dochgpw']) ||
$_POST['dochgmfa'] < $lastmfatype ||
trim($old_email) != trim($_POST['email'])
) {
// these changes require security check
if ((md5($_POST['oldpw'])==$oldpw || (isset($CFG['GEN']['newpasswords']) && password_verify($_POST['oldpw'],$oldpw))) && $myrights>5) {
// pw ok
} else {
require_once "header.php";
echo $pagetopper;
echo _("Password verification failed.")," <a href=\"forms.php?action=chguserinfo$gb\">",_("Try Again"),"</a>\n";
require_once "footer.php";
exit;
}
if ($lastmfatype > 0) {
// also check MFA
require_once 'includes/GoogleAuthenticator.php';
$MFA = new GoogleAuthenticator();
if (!$MFA->verifyCode($mfadata['secret'], $_POST['oldmfa'])) {
// MFA ok
require_once "header.php";
echo $pagetopper;
echo "2-factor authentication verification failed. <a href=\"forms.php?action=chguserinfo$gb\">Try Again</a>\n";
require_once "footer.php";
exit;
}
}
}
// if we're here, then security checks for pw, email, and mfa change are OK
$query = "UPDATE imas_users SET FirstName=:FirstName, LastName=:LastName, email=:email, msgnotify=:msgnotify, qrightsdef=:qrightsdef, deflib=:deflib,";
$query .= "usedeflib=:usedeflib, homelayout=:homelayout, theme=:theme, listperpage=:listperpage $chguserimg WHERE id=:uid";
$stm = $DBH->prepare($query);
$stm->execute(array(':FirstName'=>$_POST['firstname'],
':LastName'=>$_POST['lastname'], ':email'=>$_POST['email'], ':msgnotify'=>$msgnot, ':homelayout'=>$layoutstr, ':qrightsdef'=>$qrightsdef,
':deflib'=>$deflib, ':usedeflib'=>$usedeflib, ':theme'=>'', ':listperpage'=>$perpage, ':uid'=>$userid));
$pwchanged = false;
if (isset($_POST['dochgpw'])) {
if ($_POST['pw1'] == $_POST['pw2'] && $myrights>5) {
if (isset($CFG['GEN']['newpasswords'])) {
$newpw = password_hash($_POST['pw1'], PASSWORD_DEFAULT);
} else {
$newpw =md5($_POST['pw1']);
}
$stm = $DBH->prepare("UPDATE imas_users SET password = :newpw WHERE id = :uid");
$stm->execute(array(':uid'=>$userid, ':newpw'=>$newpw));
$pwchanged = true;
} else {
require_once "header.php";
echo $pagetopper;
echo _("Password change failed.")," <a href=\"forms.php?action=chguserinfo$gb\">",_("Try Again"),"</a>\n";
require_once "footer.php";
exit;
}
}
if ($_POST['dochgmfa'] > 0) {
if ($lastmfatype == 0) {
//enabling new
require_once 'includes/GoogleAuthenticator.php';
$MFA = new GoogleAuthenticator();
$mfasecret = $_POST['mfasecret'];
if ($MFA->verifyCode($mfasecret, $_POST['mfaverify'])) {
$mfadata = array(
'secret'=>$mfasecret,
'last'=>'',
'laston'=>0,
'mfatype'=>($_POST['dochgmfa'] == 1 ? 'admin' : 'all')
);
} else {
require_once "header.php";
echo $pagetopper;
echo "Incorrect 2-factor authentication code. <a href=\"forms.php?action=chguserinfo$gb\">Try Again</a>\n";
require_once "footer.php";
exit;
}
} else {
$mfadata['mfatype'] = ($_POST['dochgmfa'] == 1 ? 'admin' : 'all');
}
$stm = $DBH->prepare("UPDATE imas_users SET mfa = :mfa WHERE id = :uid");
$stm->execute(array(':uid'=>$userid, ':mfa'=>json_encode($mfadata)));
} else {
// disable MFA
$stm = $DBH->prepare("UPDATE imas_users SET mfa = '' WHERE id = :uid");
$stm->execute(array(':uid'=>$userid));
}
require_once "includes/userprefs.php";
storeUserPrefs();
$jsondata = json_decode($jsondata,true);
if ($pwchanged || trim($old_email) != trim($_POST['email'])) {
require_once "./includes/email.php";
$message = '<p><b>'._('This is an automated message. Do not reply to this email.').'</b></p>';
$message .= '<p>'.sprintf(_('Hi, your account details on %s were recently changed.'), $installname).' ';
if ($old_email != $_POST['email']) {
$message .= sprintf(_('Your email address was changed to %s.'), Sanitize::encodeStringForDisplay($_POST['email'])).' ';
}
if ($pwchanged) {
$message .= _('Your password was changed.');
}
$message .= '</p><p>'._('If this was you, you can disregard this email.').' ';
$message .= _('If you did not make these changes, please log into your account and correct the changes and change your password.').' ';
require_once './includes/passwordreset.php';
$code = make_pwreset_link($userid, true);
$message .= _('If you are unable to log into your account, use the following link.'). ' ';
$message .= '<a href="' . $GLOBALS['basesiteurl'] . "/forms.php?action=resetpw&code=$code\">";
$message .= _('Reset Password').'</a></p>';
send_email($old_email, $sendfrom,
_('Alert:'). ' '.$installname.' '._('Account Activity'),
$message, array(), array(), 10
);
if (is_array($jsondata)) {
$jsondata['lastemail'] = time();
} else {
$jsondata = ['lastemail' => time()];
}
$query = "UPDATE imas_users SET jsondata=:jsondata WHERE id=:id";
$stm = $DBH->prepare($query);
$stm->execute(array(':jsondata'=>json_encode($jsondata), ':id'=>$userid));
if ($pwchanged) {
// record last password update time
$query = "UPDATE imas_users SET lastemail=:now WHERE id=:id";
$stm = $DBH->prepare($query);
$stm->execute(array(':now'=>time(), ':id'=>$userid));
$_SESSION['started'] = time()+1;
}
}
} else if (isset($_POST['action']) && $_POST['action'] == 'cleartrustedmfa') {
$stm = $DBH->prepare("SELECT mfa FROM imas_users WHERE id= :uid");
$stm->execute(array(':uid'=>$userid));
$mfadata = json_decode($stm->fetchColumn(0), true);
if ($mfadata !== false) {
unset($mfadata['trusted']);
unset($mfadata['logintrusted']);
$stm = $DBH->prepare("UPDATE imas_users SET mfa=:mfa WHERE id=:uid");
$stm->execute(array(':mfa'=>json_encode($mfadata), ':uid'=>$userid));
echo "OK";
exit;
}
echo "FAIL";
exit;
} else if (isset($_GET['action']) && $_GET['action']=="forumwidgetsettings") {
if (empty($_POST['checked'])) {
$checked = array();
} else {
$checked = $_POST['checked'];
}
$all = explode(',',$_POST['allcourses']);
foreach ($all as $k=>$v) {
$all[$k] = intval($v);
}
$tohide = array_diff($all,$checked);
$hidelist = implode(',', $tohide);
$stm = $DBH->prepare("UPDATE imas_users SET hideonpostswidget=:hidelist WHERE id= :uid");
$stm->execute(array(':uid'=>$userid, ':hidelist'=>$hidelist));
}
if ($isgb) {
echo '<html><body>',_('Changes Recorded.'),' <input type="button" onclick="parent.GB_hide()" value="',_('Done'),'" /></body></html>';
} else if (isset($_SESSION['ltiitemtype']) && $_SESSION['ltiitemtype']==0) {
$stm = $DBH->prepare("SELECT courseid FROM imas_assessments WHERE id=:id");
$stm->execute(array(':id'=>$_SESSION['ltiitemid']));
$cid = Sanitize::courseId($stm->fetchColumn(0));
if (isset($_SESSION['ltiitemver']) && $_SESSION['ltiitemver'] > 1) {
header('Location: ' . $GLOBALS['basesiteurl'] . "/assess2/?cid=$cid&aid={$_SESSION['ltiitemid']}&r=".Sanitize::randomQueryStringParam());
} else {
header('Location: ' . $GLOBALS['basesiteurl'] . "/assessment/showtest.php?cid=$cid&id={$_SESSION['ltiitemid']}&r=".Sanitize::randomQueryStringParam());
}
} else {
header('Location: ' . $GLOBALS['basesiteurl'] . "/index.php?r=" . Sanitize::randomQueryStringParam());
}
?>