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actions.php
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actions.php
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<?php
//IMathAS: Basic Actions
//(c) 20006 David Lippman
ini_set("memory_limit", "104857600");
ini_set("upload_max_filesize", "10485760");
ini_set("post_max_size", "10485760");
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 {
$urlmode = 'http://';
}
require_once("includes/password.php");
if ($_GET['action']=="newuser") {
require_once("config.php");
$error = '';
if (isset($studentTOS) && !isset($_POST['agree'])) {
$error = "<p>You must agree to the Terms and Conditions to set up an account</p>";
}
$_POST['SID'] = trim($_POST['SID']);
if ($loginformat!='' && !preg_match($loginformat,$_POST['SID'])) {
$error .= "<p>$loginprompt is invalid.</p>";
}
//DB $query = "SELECT id FROM imas_users WHERE SID='{$_POST['SID']}'";
//DB $result = mysql_query($query) or die("Query failed : " . mysql_error());
//DB if (mysql_num_rows($result)>0) {
$stm = $DBH->prepare('SELECT id FROM imas_users WHERE SID=:sid');
$stm->execute(array(':sid'=>$_POST['SID']));
if ($stm->rowCount()>0) {
$error .= "<p>$loginprompt '{$_POST['SID']}' is used. </p>";
}
//
if (!preg_match('/^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,4}$/',$_POST['email'])) {
$error .= "<p>Invalid email address.</p>";
}
if ($_POST['pw1'] != $_POST['pw2']) {
$error .= "<p>Passwords don't match. </p>";
}
if ($_POST['SID']=="" || $_POST['firstname']=="" || $_POST['lastname']=="" || $_POST['email']=="" || $_POST['pw1']=="") {
$error .= "<p>Please include all information.</p>";
}
if ($error != '') {
require("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"><h2>New User Signup</h2></div>';
echo $error;
echo '<p><a href="forms.php?action=newuser">Try Again</a></p>';
require("footer.php");
exit;
}
if (isset($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'] = $_POST['courseselect'];
$_POST['ekey'] = '';
}
if (!isset($_GET['confirmed'])) {
//DB $query = "SELECT SID FROM imas_users WHERE email='{$_POST['email']}'";
//DB $result = mysql_query($query) or die("Query failed : " . mysql_error());
//DB if (mysql_num_rows($result)>0) {
$stm = $DBH->prepare('SELECT SID FROM imas_users WHERE email=:email');
$stm->execute(array(':email'=>$_POST['email']));
if ($stm->rowCount()>0) {
$nologo = true;
require("header.php");
echo '<form method="post" action="actions.php?action=newuser&confirmed=true'.$gb.'">';
//DB echo '<input type="hidden" name="SID" value="'.stripslashes($_POST['SID']).'" />';
//DB echo '<input type="hidden" name="firstname" value="'.stripslashes($_POST['firstname']).'" />';
//DB echo '<input type="hidden" name="lastname" value="'.stripslashes($_POST['lastname']).'" />';
//DB echo '<input type="hidden" name="email" value="'.stripslashes($_POST['email']).'" />';
//DB echo '<input type="hidden" name="pw1" value="'.stripslashes($_POST['pw1']).'" />';
//DB echo '<input type="hidden" name="pw2" value="'.stripslashes($_POST['pw2']).'" />';
//DB echo '<input type="hidden" name="courseid" value="'.stripslashes($_POST['courseid']).'" />';
//DB echo '<input type="hidden" name="ekey" value="'.stripslashes($_POST['ekey']).'" />';
echo '<input type="hidden" name="SID" value="'.$_POST['SID'].'" />';
echo '<input type="hidden" name="firstname" value="'.$_POST['firstname'].'" />';
echo '<input type="hidden" name="lastname" value="'.$_POST['lastname'].'" />';
echo '<input type="hidden" name="email" value="'.$_POST['email'].'" />';
echo '<input type="hidden" name="pw1" value="'.$_POST['pw1'].'" />';
echo '<input type="hidden" name="pw2" value="'.$_POST['pw2'].'" />';
echo '<input type="hidden" name="courseid" value="'.$_POST['courseid'].'" />';
echo '<input type="hidden" name="ekey" value="'.$_POST['ekey'].'" />';
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 'If you are creating an account because you forgot your username, you can ';
echo '<a href="forms.php?action=lookupusername">look up your username</a> instead.</p>';
echo '<input type="submit" value="Create new account anyways"/>';
echo '</form>';
require("footer.php");
exit;
}
}
//DB $query = "INSERT INTO imas_users (SID, password, rights, FirstName, LastName, email, msgnotify, homelayout) ";
//DB $query .= "VALUES ('{$_POST['SID']}','$md5pw',$initialrights,'{$_POST['firstname']}','{$_POST['lastname']}','{$_POST['email']}',$msgnot,'$homelayout');";
//DB mysql_query($query) or die("Query failed : " . mysql_error());
//DB $newuserid = mysql_insert_id();
$query = "INSERT INTO imas_users (SID, password, rights, FirstName, LastName, email, msgnotify, homelayout) ";
$query .= "VALUES (:SID, :password, :rights, :FirstName, :LastName, :email, :msgnotify, :homelayout)";
$stm = $DBH->prepare($query);
$stm->execute(array(':SID'=>$_POST['SID'], ':password'=>$md5pw, ':rights'=>$initialrights, ':FirstName'=>$_POST['firstname'],
':LastName'=>$_POST['lastname'], ':email'=>$_POST['email'], ':msgnotify'=>$msgnot, ':homelayout'=>$homelayout));
$newuserid = $DBH->lastInsertId();
if ($emailconfirmation) {
$id = $newuserid;
$headers = 'MIME-Version: 1.0' . "\r\n";
$headers .= 'Content-type: text/html; charset=iso-8859-1' . "\r\n";
$headers .= "From: $sendfrom\r\n";
$message = "<h4>This is an automated message from $installname. Do not respond to this email</h4>\r\n";
$message .= "<p>To complete your $installname registration, please click on the following link, or copy ";
$message .= "and paste it into your webbrowser:</p>\r\n";
$message .= "<a href=\"" . $urlmode . $_SERVER['HTTP_HOST'] . rtrim(dirname($_SERVER['PHP_SELF']), '/\\') . "/actions.php?action=confirm&id=$id\">";
$message .= $urlmode . $_SERVER['HTTP_HOST'] . rtrim(dirname($_SERVER['PHP_SELF']), '/\\') . "/actions.php?action=confirm&id=$id</a>\r\n";
mail($_POST['email'],'IMathAS Confirmation',$message,$headers);
require("header.php");
if ($gb == '') {
echo "<div class=breadcrumb><a href=\"index.php\">Home</a> > New User Signup</div>\n";
}
echo '<div id="headerforms" class="pagetitle"><h2>New User Signup</h2></div>';
echo "Registration recorded. You should shortly receive an email with confirmation instructions.";
echo "<a href=\"$imasroot/index.php\">Back to main login page</a>\n";
require("footer.php");
exit;
} else {
$pagetitle = 'Account Created';
require("header.php");
echo "<div class=breadcrumb><a href=\"index.php\">Home</a> > New User Signup</div>\n";
echo '<div id="headerforms" class="pagetitle"><h2>New User Signup</h2></div>';
echo "<p>Your account with username <b>{$_POST['SID']}</b> has been created. If you forget your password, you can ask your ";
echo "instructor to reset your password or use the forgotten password link on the login page.</p>\n";
if (trim($_POST['courseid'])!='') {
$error = '';
if (!is_numeric($_POST['courseid'])) {
$error = 'Invalid course id';
} else {
//DB $query = "SELECT enrollkey,allowunenroll,deflatepass FROM imas_courses WHERE id = '{$_POST['courseid']}' AND (available=0 OR available=2)";
//DB $result = mysql_query($query) or die("Query failed : " . mysql_error());
//DB $line = mysql_fetch_array($result, MYSQL_ASSOC);
$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 {
$keylist = array_map('strtolower',array_map('trim',explode(';',$line['enrollkey'])));
$_POST['ekey'] = trim($_POST['ekey']);
if (!in_array(strtolower($_POST['ekey']), $keylist)) {
$error = 'Incorrect enrollment key';
} else {
if (count($keylist)>1) {
//DB $query = "INSERT INTO imas_students (userid,courseid,section,latepass) VALUES ('$newuserid','{$_POST['courseid']}','{$_POST['ekey']}','{$line['deflatepass']}');";
$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']);
} else {
//DB $query = "INSERT INTO imas_students (userid,courseid,latepass) VALUES ('$newuserid','{$_POST['courseid']}','{$line['deflatepass']}');";
$query = "INSERT INTO imas_students (userid,courseid,latepass) VALUES (:uid,:cid,:latepass);";
$array = array(':uid'=>$newuserid, ':cid'=>$_POST['courseid'], ':latepass'=>$line['deflatepass']);
}
$stm = $DBH->prepare($query);
$stm->execute($array);
//DB mysql_query($query) or die("Query failed : " . mysql_error());
echo '<p>You have been enrolled in course ID '.$_POST['courseid'].'</p>';
$msgOnEnroll = ((floor($line['msgset']/5)&2) > 0);
if ($msgOnEnroll) {
$stm_nmsg = $DBH->prepare("INSERT INTO imas_msgs (courseid,title,message,msgto,msgfrom,senddate,isread) VALUES (:cid,:title,:message,:msgto,:msgfrom,:senddate,4)");
$stm = $DBH->prepare("SELECT userid FROM imas_teachers WHERE courseid=:cid");
$stm->execute(array(':cid'=>$_POST['courseid']));
while ($tuid = $stm->fetchColumn(0)) {
$stm_nmsg->execute(array(':cid'=>$_POST['courseid'],':title'=>_('Automated new enrollment notice'),
':message'=>_('This is an automated system message letting you know this student just enrolled in your course'),
':msgto'=>$tuid, ':msgfrom'=>$newuserid, ':senddate'=>time()));
}
}
}
}
}
if ($error != '') {
echo "<p>$error, so we were not able to enroll you in your course. After you log in, you can ";
echo 'try enrolling again. You do <b>not</b> need to create another account.</p>';
}
}
echo "You can now <a href=\"";
echo $urlmode . $_SERVER['HTTP_HOST'] . rtrim(dirname($_SERVER['PHP_SELF']), '/\\') . "/index.php";
echo "\">return to the login page</a> and login with your new username and password</p>";
require("footer.php");
}
//header('Location: ' . $urlmode . $_SERVER['HTTP_HOST'] . rtrim(dirname($_SERVER['PHP_SELF']), '/\\') . "/index.php");
exit;
} else if ($_GET['action']=="confirm") {
require_once("config.php");
//DB $query = "UPDATE imas_users SET rights=10 WHERE id='{$_GET['id']}' AND rights=0";
//DB mysql_query($query) or die("Query failed : " . mysql_error());
//DB if (mysql_affected_rows()>0) {
$query = "UPDATE imas_users SET rights=10 WHERE id=:id AND rights=0";
$stm = $DBH->prepare($query);
$stm->execute(array(':id'=>$_GET['id']));
if ($stm->rowCount()>0) {
require("header.php");
echo "Confirmed. Please <a href=\"index.php\">Log In</a>\n";
require("footer.php");
exit;
} else {
require("header.php");
echo "Error.\n";
require("footer.php");
}
} else if ($_GET['action']=="resetpw") {
require_once("config.php");
if (isset($_POST['username'])) {
//DB $query = "SELECT id,email,rights FROM imas_users WHERE SID='{$_POST['username']}'";
//DB $result = mysql_query($query) or die("Query failed : " . mysql_error());
//DB if (mysql_num_rows($result)>0) {
$query = "SELECT id,email,rights FROM imas_users WHERE SID=:sid";
$stm = $DBH->prepare($query);
$stm->execute(array(':sid'=>$_POST['username']));
if ($stm->rowCount()>0) {
list($id,$email,$rights) = $stm->fetch(PDO::FETCH_NUM);
//DB mysql_fetch_row($result);
$chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
$code = '';
for ($i=0;$i<10;$i++) {
$code .= substr($chars,rand(0,61),1);
}
//DB $query = "UPDATE imas_users SET remoteaccess='$code' WHERE id=$id";
//DB mysql_query($query) or die("Query failed : " . mysql_error());
$query = "UPDATE imas_users SET remoteaccess=:code WHERE id=:id";
$stm = $DBH->prepare($query);
$stm->execute(array(':code'=>$code, ':id'=>$id));
$headers = 'MIME-Version: 1.0' . "\r\n";
$headers .= 'Content-type: text/html; charset=iso-8859-1' . "\r\n";
$headers .= "From: $sendfrom\r\n";
$message = "<h4>This is an automated message from $installname. Do not respond to this email</h4>\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 ";
$message .= "will then be prompted to choose a new password.</p>";
$message .= "<a href=\"" .$urlmode. $_SERVER['HTTP_HOST'] . rtrim(dirname($_SERVER['PHP_SELF']), '/\\') . "/actions.php?action=resetpw&id=$id&code=$code\">";
$message .= $urlmode . $_SERVER['HTTP_HOST'] . rtrim(dirname($_SERVER['PHP_SELF']), '/\\') . "/actions.php?action=resetpw&id=$id&code=$code</a>\r\n";
if (isset($CFG['GEN']['useSESmail'])) {
SESmail($email, $sendfrom, 'Password Reset Request',$message);
} else {
mail($email,'Password Reset Request',$message,$headers);
}
require("header.php");
echo '<p>An email with a password reset link has been sent your email address on record: <b>'.$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 'It may help to add <b>'.$sendfrom.'</b> to your contacts list.</p>';
echo '<p>If you still have trouble or the wrong email address is on file, contact your instructor - they can reset your password for you.</p>';
require("footer.php");
exit;
} else {
echo "Invalid Username. <a href=\"index.php$gb\">Try again</a>";
exit;
}
header('Location: ' . $urlmode . $_SERVER['HTTP_HOST'] . rtrim(dirname($_SERVER['PHP_SELF']), '/\\') . "/index.php");
} else if (isset($_POST['pw1'])) {
if ($_POST['pw1']!=$_POST['pw2']) {
echo 'Passwords do not match. <a href="actions.php?action=resetpw&code='.$_POST['code'].'&id='.$_POST['id'].'">Try again</a>';
exit;
}
//DB $query = "SELECT remoteaccess FROM imas_users WHERE id='{$_POST['id']}'";
//DB $result = mysql_query($query) or die("Query failed : " . mysql_error());
//DB $realcode = mysql_result($result,0,0);
//DB if (mysql_num_rows($result)>0 && $_POST['code']===$realcode && $realcode!='') {
$query = "SELECT remoteaccess FROM imas_users WHERE id=:id";
$stm = $DBH->prepare($query);
$stm->execute(array(':id'=>$_POST['id']));
if ($stm->rowCount() > 0) {
$row = $stm->fetch(PDO::FETCH_ASSOC);
if ($row['remoteaccess']!='' && $row['remoteaccess']===$_POST['code']) {
if (isset($CFG['GEN']['newpasswords'])) {
$newpw = password_hash($_POST['pw1'], PASSWORD_DEFAULT);
} else {
$newpw = md5($_POST['pw1']);
}
//DB $query = "UPDATE imas_users SET password='$newpw',remoteaccess='' WHERE id='{$_POST['id']}' LIMIT 1";
//DB mysql_query($query) or die("Query failed : " . mysql_error());
$query = "UPDATE imas_users SET password=:newpw,remoteaccess='' WHERE id=:id LIMIT 1";
$stm = $DBH->prepare($query);
$stm->execute(array(':id'=>$_POST['id'], ':newpw'=>$newpw));
echo "Password Reset. ";
echo "<a href=\"index.php\">Login with your new password</a>";
} else {
echo _('Invalid code');
}
} else {
echo 'Invalid user';
}
exit;
} else if (isset($_GET['code'])) {
//DB $query = "SELECT remoteaccess FROM imas_users WHERE id='{$_GET['id']}'";
//DB $result = mysql_query($query) or die("Query failed : " . mysql_error());
//DB $realcode = mysql_result($result,0,0);
//DB if (mysql_num_rows($result)>0 && $_GET['code']===$realcode && $realcode!='') {
$stm = $DBH->prepare("SELECT remoteaccess FROM imas_users WHERE id=:id");
$stm->execute(array(':id'=>$_GET['id']));
$row = $stm->fetch(PDO::FETCH_ASSOC);
if ($row !== false && $row['remoteaccess']!='' && $row['remoteaccess']===$_GET['code']) {
echo '<html><body><form method="post" action="actions.php?action=resetpw">';
echo '<input type="hidden" name="code" value="'.$_GET['code'].'"/>';
echo '<input type="hidden" name="id" value="'.$_GET['id'].'"/>';
echo '<p>Please select a new password:</p>';
echo '<p>Enter new password: <input type="password" size="25" name="pw1"/><br/>';
echo '<p>Verify new password: <input type="password" size="25" name="pw2"/></p>';
echo '<p><input type="submit" value="Submit"/></p>';
echo '</form>';
echo '</body></html>';
exit;
} else {
echo '<html><body>Invalid reset code. If you have requested a password reset multiple times, you need the link from ';
echo 'the most recent email.</body></html>';
exit;
}
}
} else if ($_GET['action']=="lookupusername") {
require_once("config.php");
//DB $query = "SELECT SID,lastaccess FROM imas_users WHERE email='{$_POST['email']}' AND SID NOT LIKE 'lti-%'";
//DB $result = mysql_query($query) or die("Query failed : " . mysql_error());
//DB if (mysql_num_rows($result)>0) {
$query = "SELECT SID,lastaccess 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) {
echo $stm->rowCount();
echo " usernames match this email address and were emailed. <a href=\"index.php\">Return to login page</a>";
$headers = 'MIME-Version: 1.0' . "\r\n";
$headers .= 'Content-type: text/html; charset=iso-8859-1' . "\r\n";
$headers .= "From: $sendfrom\r\n";
$message = "<h4>This is an automated message from $installname. Do not respond to this email</h4>\r\n";
$message .= "<p>Your email was entered in the Username Lookup page on $installname. If you did not do this, you may ignore and delete this message. ";
$message .= "All usernames using this email address are listed below</p><p>";
//DB while ($row = mysql_fetch_row($result)) {
while ($row = $stm->fetch(PDO::FETCH_ASSOC)) {
if ($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/>";
}
$message .= "</p><p>If you forgot your password, use the Lost Password link at the login page.</p>";
if (isset($CFG['GEN']['useSESmail'])) {
SESmail($_POST['email'], $sendfrom, "$installname Username Request",$message);
} else {
mail($_POST['email'],"$installname Username Request",$message,$headers);
}
exit;
} else {
//DB $query = "SELECT SID,lastaccess FROM imas_users WHERE email='{$_POST['email']}'";
//DB $result = mysql_query($query) or die("Query failed : " . mysql_error());
//DB if (mysql_num_rows($result)>0) {
$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 ($stm->rowCount() > 0) {
echo "Your account can only be accessed through your school's learning management system. <a href=\"index.php\">Return to login page</a>";
} else {
echo "No usernames match this email address <a href=\"index.php\">Return to login page</a>";
}
exit;
}
}
require("validate.php");
if ($_GET['action']=="logout") {
$sessionid = session_id();
//DB $query = "DELETE FROM imas_sessions WHERE sessionid='$sessionid'";
//DB mysql_query($query) or die("Query failed : " . mysql_error());
$stm = $DBH->prepare("DELETE FROM imas_sessions WHERE sessionid=?");
$stm->execute(array($sessionid));
$_SESSION = array();
if (isset($_COOKIE[session_name()])) {
setcookie(session_name(), '', time()-42000, '/');
}
session_destroy();
} else if ($_GET['action']=="chgpwd") {
//DB $query = "SELECT password FROM imas_users WHERE id = '$userid'";
//DB $result = mysql_query($query) or die("Query failed : " . mysql_error());
//DB $line = mysql_fetch_array($result, MYSQL_ASSOC);
$stm = $DBH->prepare("SELECT password FROM imas_users WHERE id=:uid");
$stm->execute(array(':uid'=>$userid));
$line = $stm->fetch(PDO::FETCH_ASSOC);
if ((md5($_POST['oldpw'])==$line['password'] || (isset($CFG['GEN']['newpasswords']) && password_verify($_POST['oldpw'],$line['password']))) && ($_POST['newpw1'] == $_POST['newpw2']) && $myrights>5) {
if (isset($CFG['GEN']['newpasswords'])) {
$newpw = password_hash($_POST['newpw1'], PASSWORD_DEFAULT);
} else {
$newpw =md5($_POST['newpw1']);
}
//DB $query = "UPDATE imas_users SET password='$md5pw' WHERE id='$userid'";
//DB mysql_query($query) or die("Query failed : " . mysql_error());
$stm = $DBH->prepare("UPDATE imas_users SET password=:newpw WHERE id=:uid LIMIT 1");
$stm->execute(array(':uid'=>$userid, ':newpw'=>$newpw));
} else {
echo "<html><body>Password change failed. <A HREF=\"forms.php?action=chgpwd$gb\">Try Again</a>\n";
echo "</body></html>\n";
exit;
}
} else if ($_GET['action']=="enroll") {
if ($myrights < 6) {
echo "<html><body>\nError: 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";
}
$pagetopper .= '<div id="headerforms" class="pagetitle"><h2>Enroll in a Course</h2></div>';
if ($_POST['cid']=="" || !is_numeric($_POST['cid'])) {
require("header.php");
echo $pagetopper;
echo "Please include Course ID. <a href=\"forms.php?action=enroll$gb\">Try Again</a>\n";
require("footer.php");
exit;
}
//DB $query = "SELECT enrollkey,allowunenroll,deflatepass FROM imas_courses WHERE id = '{$_POST['cid']}' AND (available=0 OR available=2)";
//DB $result = mysql_query($query) or die("Query failed : " . mysql_error());
//DB $line = mysql_fetch_array($result, MYSQL_ASSOC);
$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("header.php");
echo $pagetopper;
echo "Course not found. <a href=\"forms.php?action=enroll$gb\">Try Again</a>\n";
require("footer.php");
exit;
} else if (($line['allowunenroll']&2)==2) {
require("header.php");
echo $pagetopper;
echo "Course is closed for self enrollment. Contact your instructor for access. <a href=\"index.php\">Return to home page.</a>\n";
require("footer.php");
exit;
} else if ($_POST['ekey']=="" && $line['enrollkey'] != '') {
require("header.php");
echo $pagetopper;
echo "Please include Enrollment Key. <a href=\"forms.php?action=enroll$gb\">Try Again</a>\n";
require("footer.php");
exit;
} else {
//DB $query = "SELECT * FROM imas_teachers WHERE userid='$userid' AND courseid='{$_POST['cid']}'";
//DB $result = mysql_query($query) or die("Query failed : " . mysql_error());
//DB if (mysql_num_rows($result)>0) {
$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("header.php");
echo $pagetopper;
echo "You are a teacher for this course, and can't enroll as a student. Use Student View to see ";
echo "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("footer.php");
exit;
}
//DB $query = "SELECT * FROM imas_tutors WHERE userid='$userid' AND courseid='{$_POST['cid']}'";
//DB $result = mysql_query($query) or die("Query failed : " . mysql_error());
//DB if (mysql_num_rows($result)>0) {
$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("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("footer.php");
exit;
}
//DB $query = "SELECT * FROM imas_students WHERE userid='$userid' AND courseid='{$_POST['cid']}'";
//DB $result = mysql_query($query) or die("Query failed : " . mysql_error());
//DB if (mysql_num_rows($result)>0) {
$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("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("footer.php");
exit;
} else {
$keylist = array_map('strtolower',array_map('trim',explode(';',$line['enrollkey'])));
if (!in_array(strtolower(trim($_POST['ekey'])), $keylist)) {
require("header.php");
echo $pagetopper;
echo "Incorrect Enrollment Key. <a href=\"forms.php?action=enroll$gb\">Try Again</a>\n";
require("footer.php");
exit;
} else {
if (count($keylist)>1) {
//DB $query = "INSERT INTO imas_students (userid,courseid,section,latepass) VALUES ('$userid','{$_POST['cid']}','{$_POST['ekey']}','{$line['deflatepass']}');";
$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']);
} else {
//DB $query = "INSERT INTO imas_students (userid,courseid,latepass) VALUES ('$userid','{$_POST['cid']}','{$line['deflatepass']}');";
$query = "INSERT INTO imas_students (userid,courseid,latepass) VALUES (:uid,:cid,:latepass);";
$array = array(':uid'=>$userid, ':cid'=>$_POST['cid'], ':latepass'=>$line['deflatepass']);
}
$stm = $DBH->prepare($query);
$stm->execute($array);
$msgOnEnroll = ((floor($line['msgset']/5)&2) > 0);
if ($msgOnEnroll) {
$stm_nmsg = $DBH->prepare("INSERT INTO imas_msgs (courseid,title,message,msgto,msgfrom,senddate,isread) VALUES (:cid,:title,:message,:msgto,:msgfrom,:senddate,4)");
$stm = $DBH->prepare("SELECT userid FROM imas_teachers WHERE courseid=:cid");
$stm->execute(array(':cid'=>$_POST['cid']));
while ($tuid = $stm->fetchColumn(0)) {
$stm_nmsg->execute(array(':cid'=>$_POST['cid'],':title'=>_('Automated new enrollment notice'),
':message'=>_('This is an automated system message letting you know this student just enrolled in your course'),
':msgto'=>$tuid, ':msgfrom'=>$userid, ':senddate'=>time()));
}
}
//DB mysql_query($query) or die("Query failed : " . mysql_error());
require("header.php");
echo $pagetopper;
echo '<p>You have been enrolled in course ID '.$_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("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 ($_GET['action']=="unenroll") {
if ($myrights < 6) {
echo "<html><body>\nError: Guests can't unenroll from courses</body></html";
exit;
}
if (!isset($_GET['cid'])) {
require("header.php");
echo "Course ID not specified. <a href=\"index.php\">Try Again</a>\n";
require("footer.php");
exit;
}
$cid = $_GET['cid'];
//DB $query = "SELECT allowunenroll FROM imas_courses WHERE id='$cid'";
//DB $result = mysql_query($query) or die("Query failed : " . mysql_error());
//DB if (mysql_result($result,0,0)==1) {
$stm = $DBH->prepare("SELECT allowunenroll FROM imas_courses WHERE id=:cid");
$stm->execute(array(':cid'=>$cid));
if ($stm->fetchColumn()==1) {
//DB $query = "DELETE FROM imas_students WHERE userid='$userid' AND courseid='$cid'";
//DB mysql_query($query) or die("Query failed : " . mysql_error());
$stm = $DBH->prepare("DELETE FROM imas_students WHERE userid=:uid AND courseid=:cid");
$stm->execute(array(':uid'=>$userid,':cid'=>$cid));
//DB $query = "SELECT id FROM imas_assessments WHERE courseid='$cid'";
//DB $result = mysql_query($query) or die("Query failed : " . mysql_error());
//DB while ($row = mysql_fetch_row($result)) {
/*
$stm = $DBH->prepare("SELECT id FROM imas_assessments WHERE courseid=:cid");
$stm->execute(array(':cid'=>$cid));
while ($row = $stm->fetch(PDO::FETCH_ASSOC)) {
//DB $query = "DELETE FROM imas_assessment_sessions WHERE assessmentid='{$row[0]}' AND userid='$userid'";
//DB mysql_query($query) or die("Query failed : " . mysql_error());
$stm = $DBH->prepare("DELETE FROM imas_assessment_sessions WHERE assessmentid=:aid AND userid=:uid");
$stm->execute(array(':uid'=>$userid,':aid'=>$row['id']));
//DB $query = "DELETE FROM imas_exceptions WHERE assessmentid='{$row[0]}' AND userid='$userid'";
//DB mysql_query($query) or die("Query failed : " . mysql_error());
$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_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));
//DB $query = "DELETE FROM imas_drillassess_sessions WHERE drillassessid IN (SELECT id FROM imas_drillassess WHERE courseid='$cid') AND userid='$userid'";
//DB mysql_query($query) or die("Query failed : $query" . mysql_error());
$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));
//DB $query = "SELECT id FROM imas_gbitems WHERE courseid='$cid'";
//DB $result = mysql_query($query) or die("Query failed : " . mysql_error());
//DB while ($row = mysql_fetch_row($result)) {
//DB $query = "DELETE FROM imas_grades WHERE gradetype='offline' AND gradetypeid='{$row[0]}' AND userid='$userid'";
//DB mysql_query($query) or die("Query failed : " . mysql_error());
//}
$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));
//DB $query = "SELECT id FROM imas_forums WHERE courseid='$cid'";
//DB $result = mysql_query($query) or die("Query failed : " . mysql_error());
//DB while ($row = mysql_fetch_row($result)) {
//DB $q2 = "SELECT threadid FROM imas_forum_posts WHERE forumid='{$row[0]}'";
//DB $r2 = mysql_query($q2) or die("Query failed : " . mysql_error());
//DB while ($rw2 = mysql_fetch_row($r2)) {
//DB $query = "DELETE FROM imas_forum_views WHERE threadid='{$rw2[0]}' AND userid='$userid'";
//DB mysql_query($query) or die("Query failed : " . mysql_error());
// }
//}
$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));
$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'=>$cid));
}
} else if ($_GET['action']=="chguserinfo") {
$pagetopper = '';
if ($gb == '') {
$pagetopper .= "<div class=breadcrumb><a href=\"index.php\">Home</a> > Modify User Profile</div>\n";
}
$pagetopper .= '<div id="headerforms" class="pagetitle"><h2>Modify User Profile</h2></div>';
require('includes/userpics.php');
if (isset($_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 = '';
}
$_POST['theme'] = str_replace(array('/','..'), '', $_POST['theme']);
//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 ";
//DB $query .= "WHERE id='$userid'";
//DB mysql_query($query) or die("Query failed : " . mysql_error());
$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'=>$usedeflib, ':theme'=>$_POST['theme'], ':listperpage'=>$perpage, ':uid'=>$userid));
if (isset($_POST['dochgpw'])) {
//DB $query = "SELECT password FROM imas_users WHERE id = '$userid'";
//DB $result = mysql_query($query) or die("Query failed : " . mysql_error());
//DB $line = mysql_fetch_array($result, MYSQL_ASSOC);
$stm = $DBH->prepare("SELECT password FROM imas_users WHERE id = :uid");
$stm->execute(array(':uid'=>$userid));
$line = $stm->fetch(PDO::FETCH_ASSOC);
if ((md5($_POST['oldpw'])==$line['password'] || (isset($CFG['GEN']['newpasswords']) && password_verify($_POST['oldpw'],$line['password']))) && ($_POST['newpw1'] == $_POST['newpw2']) && $myrights>5) {
if (isset($CFG['GEN']['newpasswords'])) {
$newpw = password_hash($_POST['newpw1'], PASSWORD_DEFAULT);
} else {
$newpw =md5($_POST['newpw1']);
}
//DB $query = "UPDATE imas_users SET password='$md5pw' WHERE id='$userid'";
//DB mysql_query($query) or die("Query failed : " . mysql_error());
$stm = $DBH->prepare("UPDATE imas_users SET password = :newpw WHERE id = :uid");
$stm->execute(array(':uid'=>$userid, ':newpw'=>$newpw));
} else {
require("header.php");
echo $pagetopper;
echo "Password change failed. <a href=\"forms.php?action=chguserinfo$gb\">Try Again</a>\n";
require("footer.php");
exit;
}
}
if (isset($_POST['settimezone'])) {
if (date_default_timezone_set($_POST['settimezone'])) {
$tzname = $_POST['settimezone'];
//DB $query = "UPDATE imas_sessions SET tzname='$tzname' WHERE sessionid='$sessionid'";
//DB mysql_query($query) or die("Query failed : " . mysql_error());
$stm = $DBH->prepare("UPDATE imas_sessions SET tzname=:tzname WHERE sessionid=:sessionid");
$stm->execute(array(':tzname'=>$tzname, ':sessionid'=>$sessionid));
}
}
} else if ($_GET['action']=="forumwidgetsettings") {
$checked = $_POST['checked'];
$all = explode(',',$_POST['allcourses']);
foreach ($all as $k=>$v) {
$all[$k] = intval($v);
}
$tohide = array_diff($all,$checked);
$hidelist = implode(',', $tohide);
//DB $query = "UPDATE imas_users SET hideonpostswidget='$hidelist' WHERE id='$userid'";
//DB mysql_query($query) or die("Query failed : " . mysql_error());
$stm = $DBH->prepare("UPDATE imas_users SET hideonpostswidget=:hidelist WHERE id= :uid");
$stm->execute(array(':uid'=>$userid, ':hidelist'=>$hidelist));
} else if ($_GET['action']=="googlegadget") {
if (isset($_GET['clear'])) {
//DB $query = "UPDATE imas_users SET remoteaccess='' WHERE id='$userid'";
//DB mysql_query($query) or die("Query failed : " . mysql_error());
$stm = $DBH->prepare("UPDATE imas_users SET remoteaccess='' WHERE id = :uid");
$stm->execute(array(':uid'=>$userid));
}
}
if ($isgb) {
echo '<html><body>Changes Recorded. <input type="button" onclick="top.GB_hide()" value="Done" /></body></html>';
} else {
header('Location: ' . $urlmode . $_SERVER['HTTP_HOST'] . rtrim(dirname($_SERVER['PHP_SELF']), '/\\') . "/index.php");
}
?>