/
actions.php
575 lines (539 loc) · 27.1 KB
/
actions.php
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<?php
//IMathAS: Admin actions
//(c) 2006 David Lippman
require("../validate.php");
switch($_GET['action']) {
case "emulateuser":
if ($myrights < 100 ) { break;}
$be = $_GET['uid'];
$query = "UPDATE imas_sessions SET userid='$be' WHERE sessionid='$sessionid'";
mysql_query($query) or die("Query failed : " . mysql_error());
break;
case "chgrights":
if ($myrights < 100 && $_POST['newrights']>75) {echo "You don't have the authority for this action"; break;}
if ($myrights < 75) { echo "You don't have the authority for this action"; break;}
$query = "UPDATE imas_users SET rights='{$_POST['newrights']}'";
if ($myrights == 100) {
$query .= ",groupid='{$_POST['group']}'";
}
$query .= " WHERE id='{$_GET['id']}'";
if ($myrights < 100) { $query .= " AND groupid='$groupid' AND rights<100"; }
mysql_query($query) or die("Query failed : " . mysql_error());
if ($myrights == 100) { //update library groupids
$query = "UPDATE imas_libraries SET groupid='{$_POST['group']}' WHERE ownerid='{$_GET['id']}'";
mysql_query($query) or die("Query failed : " . mysql_error());
}
break;
case "resetpwd":
if ($myrights < 75) { echo "You don't have the authority for this action"; break;}
$md5pw =md5("password");
$query = "UPDATE imas_users SET password='$md5pw' WHERE id='{$_GET['id']}'";
if ($myrights < 100) { $query .= " AND groupid='$groupid' AND rights<100"; }
mysql_query($query) or die("Query failed : " . mysql_error());
break;
case "deladmin":
if ($myrights < 75) { echo "You don't have the authority for this action"; break;}
$query = "DELETE FROM imas_users WHERE id='{$_GET['id']}'";
if ($myrights < 100) { $query .= " AND groupid='$groupid' AND rights<100"; }
mysql_query($query) or die("Query failed : " . mysql_error());
if (mysql_affected_rows()==0) { break;}
$query = "DELETE FROM imas_students WHERE userid='{$_GET['id']}'";
mysql_query($query) or die("Query failed : " . mysql_error());
$query = "DELETE FROM imas_teachers WHERE userid='{$_GET['id']}'";
mysql_query($query) or die("Query failed : " . mysql_error());
$query = "DELETE FROM imas_assessment_sessions WHERE userid='{$_GET['id']}'";
mysql_query($query) or die("Query failed : " . mysql_error());
$query = "DELETE FROM imas_exceptions WHERE userid='{$_GET['id']}'";
mysql_query($query) or die("Query failed : " . mysql_error());
$query = "DELETE FROM imas_msgs WHERE msgto='{$_GET['id']}' AND isread>1"; //delete msgs to user
mysql_query($query) or die("Query failed : $query " . mysql_error());
$query = "UPDATE imas_msgs SET isread=isread+2 WHERE msgto='{$_GET['id']}' AND isread<2";
mysql_query($query) or die("Query failed : $query " . mysql_error());
$query = "DELETE FROM imas_msgs WHERE msgfrom='{$_GET['id']}' AND isread>1"; //delete msgs from user
mysql_query($query) or die("Query failed : $query " . mysql_error());
$query = "UPDATE imas_msgs SET isread=isread+4 WHERE msgfrom='{$_GET['id']}' AND isread<2";
mysql_query($query) or die("Query failed : $query " . mysql_error());
//todo: delete user picture files
//todo: delete user file uploads
require_once("../includes/filehandler.php");
deletealluserfiles($_GET['id']);
//todo: delete courses if any
break;
case "chgpwd":
$query = "SELECT password FROM imas_users WHERE id = '$userid'";
$result = mysql_query($query) or die("Query failed : " . mysql_error());
$line = mysql_fetch_array($result, MYSQL_ASSOC);
if ((md5($_POST['oldpw'])==$line['password']) && ($_POST['newpw1'] == $_POST['newpw2'])) {
$md5pw =md5($_POST['newpw1']);
$query = "UPDATE imas_users SET password='$md5pw' WHERE id='$userid'";
mysql_query($query) or die("Query failed : " . mysql_error());
} else {
echo "<HTML><body>Password change failed. <A HREF=\"forms.php?action=chgpwd\">Try Again</a>\n";
echo "</body></html>\n";
exit;
}
break;
case "newadmin":
if ($myrights < 75) { echo "You don't have the authority for this action"; break;}
if ($myrights < 100 && $_POST['newrights']>75) { break;}
$query = "SELECT id FROM imas_users WHERE SID = '{$_POST['adminname']}';";
$result = mysql_query($query) or die("Query failed : " . mysql_error());
$row = mysql_fetch_row($result);
if ($row != null) {
echo "<html><body>Username is already used.\n";
echo "<a href=\"forms.php?action=newadmin\">Try Again</a> or ";
echo "<a href=\"forms.php?action=chgrights&id={$row[0]}\">Change rights for existing user</a></body></html>\n";
exit;
}
$md5pw =md5("password");
if ($myrights < 100) {
$newgroup = $groupid;
} else if ($myrights == 100) {
$newgroup = $_POST['group'];
}
$query = "INSERT INTO imas_users (SID,password,FirstName,LastName,rights,email,groupid) VALUES ('{$_POST['adminname']}','$md5pw','{$_POST['firstname']}','{$_POST['lastname']}','{$_POST['newrights']}','{$_POST['email']}','$newgroup');";
$result = mysql_query($query) or die("Query failed : " . mysql_error());
break;
case "logout":
$sessionid = session_id();
$query = "DELETE FROM imas_sessions WHERE sessionid='$sessionid'";
mysql_query($query) or die("Query failed : " . mysql_error());
$_SESSION = array();
if (isset($_COOKIE[session_name()])) {
setcookie(session_name(), '', time()-42000, '/');
}
session_destroy();
break;
case "modify":
case "addcourse":
if ($myrights < 40) { echo "You don't have the authority for this action"; break;}
if (isset($CFG['CPS']['theme']) && $CFG['CPS']['theme'][1]==0) {
$theme = addslashes($CFG['CPS']['theme'][0]);
} else {
$theme = $_POST['theme'];
}
if (isset($CFG['CPS']['picicons']) && $CFG['CPS']['picicons'][1]==0) {
$picicons = $CFG['CPS']['picicons'][0];
} else {
$picicons = $_POST['picicons'];
}
if (isset($CFG['CPS']['hideicons']) && $CFG['CPS']['hideicons'][1]==0) {
$hideicons = $CFG['CPS']['hideicons'][0];
} else {
$hideicons = $_POST['HIassess'] + $_POST['HIinline'] + $_POST['HIlinked'] + $_POST['HIforum'] + $_POST['HIblock'];
}
if (isset($CFG['CPS']['unenroll']) && $CFG['CPS']['unenroll'][1]==0) {
$unenroll = $CFG['CPS']['unenroll'][0];
} else {
$unenroll = $_POST['allowunenroll'] + $_POST['allowenroll'];
}
if (isset($CFG['CPS']['copyrights']) && $CFG['CPS']['copyrights'][1]==0) {
$copyrights = $CFG['CPS']['copyrights'][0];
} else {
$copyrights = $_POST['copyrights'];
}
if (isset($CFG['CPS']['msgset']) && $CFG['CPS']['msgset'][1]==0) {
$msgset = $CFG['CPS']['msgset'][0];
} else {
$msgset = $_POST['msgset'];
if (isset($_POST['msgmonitor'])) {
$msgset += 5;
}
}
if (isset($CFG['CPS']['chatset']) && $CFG['CPS']['chatset'][1]==0) {
$chatset = intval($CFG['CPS']['chatset'][0]);
} else {
if (isset($_POST['chatset'])) {
$chatset = 1;
} else {
$chatset = 0;
}
}
if (isset($CFG['CPS']['showlatepass']) && $CFG['CPS']['showlatepass'][1]==0) {
$showlatepass = intval($CFG['CPS']['showlatepass'][0]);
} else {
if (isset($_POST['showlatepass'])) {
$showlatepass = 1;
} else {
$showlatepass = 0;
}
}
if (isset($CFG['CPS']['topbar']) && $CFG['CPS']['topbar'][1]==0) {
$topbar = $CFG['CPS']['topbar'][0];
} else {
$topbar = array();
if (isset($_POST['stutopbar'])) {
$topbar[0] = implode(',',$_POST['stutopbar']);
} else {
$topbar[0] = '';
}
if (isset($_POST['insttopbar'])) {
$topbar[1] = implode(',',$_POST['insttopbar']);
} else {
$topbar[1] = '';
}
$topbar[2] = $_POST['topbarloc'];
}
$topbar = implode('|',$topbar);
if (isset($CFG['CPS']['cploc']) && $CFG['CPS']['cploc'][1]==0) {
$cploc = $CFG['CPS']['cploc'][0];
} else {
$cploc = $_POST['cploc'] + $_POST['cplocstu'] + $_POST['cplocview'];
}
$avail = 3 - $_POST['stuavail'] - $_POST['teachavail'];
$_POST['ltisecret'] = trim($_POST['ltisecret']);
if ($_GET['action']=='modify') {
$query = "UPDATE imas_courses SET name='{$_POST['coursename']}',enrollkey='{$_POST['ekey']}',hideicons='$hideicons',available='$avail',lockaid='{$_POST['lockaid']}',picicons='$picicons',chatset=$chatset,showlatepass=$showlatepass,";
$query .= "allowunenroll='$unenroll',copyrights='$copyrights',msgset='$msgset',topbar='$topbar',cploc='$cploc',theme='$theme',ltisecret='{$_POST['ltisecret']}' WHERE id='{$_GET['id']}'";
if ($myrights<75) { $query .= " AND ownerid='$userid'";}
mysql_query($query) or die("Query failed : " . mysql_error());
} else {
$blockcnt = 1;
$itemorder = addslashes(serialize(array()));
$query = "INSERT INTO imas_courses (name,ownerid,enrollkey,hideicons,picicons,allowunenroll,copyrights,msgset,chatset,showlatepass,itemorder,topbar,cploc,available,theme,ltisecret,blockcnt) VALUES ";
$query .= "('{$_POST['coursename']}','$userid','{$_POST['ekey']}','$hideicons','$picicons','$unenroll','$copyrights','$msgset',$chatset,$showlatepass,'$itemorder','$topbar','$cploc','$avail','$theme','{$_POST['ltisecret']}','$blockcnt');";
mysql_query($query) or die("Query failed : " . mysql_error());
$cid = mysql_insert_id();
//if ($myrights==40) {
$query = "INSERT INTO imas_teachers (userid,courseid) VALUES ('$userid','$cid')";
mysql_query($query) or die("Query failed : " . mysql_error());
//}
if (isset($CFG['CPS']['templateoncreate']) && isset($_POST['usetemplate']) && $_POST['usetemplate']>0) {
$query = "SELECT itemorder FROM imas_courses WHERE id='{$_POST['usetemplate']}'";
$result = mysql_query($query) or die("Query failed : $query" . mysql_error());
$items = unserialize(mysql_result($result,0,0));
$newitems = array();
require("../includes/copyiteminc.php");
copyallsub($items,'0',$newitems,array());
$itemorder = addslashes(serialize($newitems));
$query = "UPDATE imas_courses SET itemorder='$itemorder' WHERE id='$cid'";
mysql_query($query) or die("Query failed : " . mysql_error());
}
$useweights = intval(isset($CFG['GBS']['useweights'])?$CFG['GBS']['useweights']:0);
$orderby = intval(isset($CFG['GBS']['orderby'])?$CFG['GBS']['orderby']:0);
$defgbmode = intval(isset($CFG['GBS']['defgbmode'])?$CFG['GBS']['defgbmode']:21);
$usersort = intval(isset($CFG['GBS']['usersort'])?$CFG['GBS']['usersort']:0);
$query = "INSERT INTO imas_gbscheme (courseid,useweights,orderby,defgbmode,usersort) VALUES ('$cid',$useweights,$orderby,$defgbmode,$usersort)";
mysql_query($query) or die("Query failed : " . mysql_error());
}
break;
case "delete":
if ($myrights < 40) { echo "You don't have the authority for this action"; break;}
$query = "DELETE FROM imas_courses WHERE id='{$_GET['id']}'";
if ($myrights < 75) { $query .= " AND ownerid='$userid'";}
if ($myrights == 75) {
$query = "SELECT imas_courses.id FROM imas_courses,imas_users WHERE imas_courses.id='{$_GET['id']}' AND imas_courses.ownerid=imas_users.id AND imas_users.groupid='$groupid'";
$result = mysql_query($query) or die("Query failed : " . mysql_error());
if (mysql_num_rows($result)>0) {
$query = "DELETE FROM imas_courses WHERE id='{$_GET['id']}'";
} else {
break;
}
}
mysql_query($query) or die("Query failed : " . mysql_error());
if (mysql_affected_rows()==0) { break;}
$query = "SELECT id FROM imas_assessments WHERE courseid='{$_GET['id']}'";
$result = mysql_query($query) or die("Query failed : " . mysql_error());
require_once("../includes/filehandler.php");
while ($line = mysql_fetch_row($result)) {
deleteallaidfiles($line[0]);
$query = "DELETE FROM imas_questions WHERE assessmentid='{$line[0]}'";
mysql_query($query) or die("Query failed : " . mysql_error());
$query = "DELETE FROM imas_assessment_sessions WHERE assessmentid='{$line[0]}'";
mysql_query($query) or die("Query failed : " . mysql_error());
$query = "DELETE FROM imas_exceptions WHERE assessmentid='{$line[0]}'";
mysql_query($query) or die("Query failed : " . mysql_error());
}
$query = "DELETE FROM imas_assessments WHERE courseid='{$_GET['id']}'";
mysql_query($query) or die("Query failed : " . mysql_error());
$query = "SELECT id FROM imas_forums WHERE courseid='{$_GET['id']}'";
$result = mysql_query($query) or die("Query failed : " . mysql_error());
while ($row = mysql_fetch_row($result)) {
$q2 = "SELECT threadid FROM imas_forum_posts WHERE forumid='{$row[0]}'";
$r2 = mysql_query($q2) or die("Query failed : " . mysql_error());
while ($row2 = mysql_fetch_row($r2)) {
$query = "DELETE FROM imas_forum_views WHERE threadid='{$row2[0]}'";
mysql_query($query) or die("Query failed : " . mysql_error());
}
$query = "DELETE FROM imas_forum_posts WHERE forumid='{$row[0]}'";
mysql_query($query) or die("Query failed : " . mysql_error());
$query = "DELETE FROM imas_forum_threads WHERE forumid='{$row[0]}'";
mysql_query($query) or die("Query failed : " . mysql_error());
}
$query = "DELETE FROM imas_forums WHERE courseid='{$_GET['id']}'";
mysql_query($query) or die("Query failed : " . mysql_error());
$query = "SELECT id FROM imas_wikis WHERE courseid='{$_GET['id']}'";
$r2 = mysql_query($query) or die("Query failed : " . mysql_error());
while ($wid = mysql_fetch_row($r2)) {
$query = "DELETE FROM imas_wiki_revisions WHERE wikiid=$wid";
mysql_query($query) or die("Query failed : " . mysql_error());
$query = "DELETE FROM imas_wiki_views WHERE wikiid=$wid";
mysql_query($query) or die("Query failed : " . mysql_error());
}
$query = "DELETE FROM imas_wikis WHERE courseid='{$_GET['id']}'";
//delete inline text files
$query = "SELECT id FROM imas_inlinetext WHERE courseid='{$_GET['id']}'";
$r3 = mysql_query($query) or die("Query failed : " . mysql_error());
while ($ilid = mysql_fetch_row($r3)) {
$query = "SELECT filename FROM imas_instr_files WHERE itemid='{$ilid[0]}'";
$result = mysql_query($query) or die("Query failed : " . mysql_error());
$uploaddir = rtrim(dirname(__FILE__), '/\\') .'/../course/files/';
while ($row = mysql_fetch_row($result)) {
$safefn = addslashes($row[0]);
$query = "SELECT id FROM imas_instr_files WHERE filename='$safefn'";
$r2 = mysql_query($query) or die("Query failed : " . mysql_error());
if (mysql_num_rows($r2)==1) {
unlink($uploaddir . $row[0]);
}
}
$query = "DELETE FROM imas_instr_files WHERE itemid='{$ilid[0]}'";
mysql_query($query) or die("Query failed : " . mysql_error());
}
$query = "DELETE FROM imas_inlinetext WHERE courseid='{$_GET['id']}'";
mysql_query($query) or die("Query failed : " . mysql_error());
//delete linked text files
$query = "SELECT text FROM imas_linkedtext WHERE courseid='{$_GET['id']}' AND text LIKE 'file:%'";
$result = mysql_query($query) or die("Query failed : " . mysql_error());
while ($row = mysql_fetch_row($result)) {
$safetext = addslashes($row[0]);
$query = "SELECT id FROM imas_linkedtext WHERE text='$safetext'"; //any others using file?
$r2 = mysql_query($query) or die("Query failed : " . mysql_error());
if (mysql_num_rows($r2)==1) {
$uploaddir = rtrim(dirname(__FILE__), '/\\') .'/../course/files/';
$filename = substr($row[0],5);
unlink($uploaddir . $filename);
}
}
$query = "DELETE FROM imas_linkedtext WHERE courseid='{$_GET['id']}'";
mysql_query($query) or die("Query failed : " . mysql_error());
$query = "DELETE FROM imas_items WHERE courseid='{$_GET['id']}'";
mysql_query($query) or die("Query failed : " . mysql_error());
$query = "DELETE FROM imas_teachers WHERE courseid='{$_GET['id']}'";
mysql_query($query) or die("Query failed : " . mysql_error());
$query = "DELETE FROM imas_students WHERE courseid='{$_GET['id']}'";
mysql_query($query) or die("Query failed : " . mysql_error());
$query = "DELETE FROM imas_tutors WHERE courseid='{$_GET['id']}'";
mysql_query($query) or die("Query failed : " . mysql_error());
$query = "SELECT id FROM imas_gbitems WHERE courseid='{$_GET['id']}'";
$result = mysql_query($query) or die("Query failed : " . mysql_error());
while ($row = mysql_fetch_row($result)) {
$query = "DELETE FROM imas_grades WHERE gbitemid={$row[0]}";
mysql_query($query) or die("Query failed : " . mysql_error());
}
$query = "DELETE FROM imas_gbitems WHERE courseid='{$_GET['id']}'";
$result = mysql_query($query) or die("Query failed : " . mysql_error());
$query = "DELETE FROM imas_gbscheme WHERE courseid='{$_GET['id']}'";
$result = mysql_query($query) or die("Query failed : " . mysql_error());
$query = "DELETE FROM imas_gbcats WHERE courseid='{$_GET['id']}'";
$result = mysql_query($query) or die("Query failed : " . mysql_error());
$query = "DELETE FROM imas_calitems WHERE courseid='{$_GET['id']}'";
$result = mysql_query($query) or die("Query failed : " . mysql_error());
$query = "SELECT id FROM imas_stugroupset WHERE courseid='{$_GET['id']}'";
$result = mysql_query($query) or die("Query failed : " . mysql_error());
while ($row = mysql_fetch_row($result)) {
$q2 = "SELECT id FROM imas_stugroups WHERE groupsetid='{$row[0]}'";
$r2 = mysql_query($query) or die("Query failed : " . mysql_error());
while ($row2 = mysql_fetch_row($r2)) {
$query = "DELETE FROM imas_stugroupmembers WHERE stugroupid='{$row2[0]}'";
mysql_query($query) or die("Query failed : " . mysql_error());
}
$query = "DELETE FROM imas_stugroups WHERE groupsetid='{$row[0]}'";
}
$query = "DELETE FROM imas_stugroupset WHERE courseid='{$_GET['id']}'";
$result = mysql_query($query) or die("Query failed : " . mysql_error());
break;
case "remteacher":
if ($myrights < 40) { echo "You don't have the authority for this action"; break;}
$query = "DELETE FROM imas_teachers WHERE id='{$_GET['tid']}'";
if ($myrights < 100) {
$query = "SELECT imas_teachers.id FROM imas_teachers,imas_users WHERE imas_teachers.id='{$_GET['tid']}' AND imas_teachers.userid=imas_users.id AND imas_users.groupid='$groupid'";
$result = mysql_query($query) or die("Query failed : " . mysql_error());
if (mysql_num_rows($result)>0) {
$query = "DELETE FROM imas_teachers WHERE id='{$_GET['tid']}'";
} else {
break;
}
//$query = "DELETE imas_teachers FROM imas_users,imas_teachers WHERE imas_teachers.id='{$_GET['tid']}' ";
//$query .= "AND imas_teachers.userid=imas_users.id AND imas_users.groupid='$groupid'";
}
mysql_query($query) or die("Query failed : " . mysql_error());
header("Location: http://" . $_SERVER['HTTP_HOST'] . rtrim(dirname($_SERVER['PHP_SELF']), '/\\') . "/forms.php?action=chgteachers&id={$_GET['cid']}");
exit;
case "addteacher":
if ($myrights < 40) { echo "You don't have the authority for this action"; break;}
if ($myrights < 100) {
$query = "SELECT imas_users.groupid FROM imas_users,imas_courses WHERE imas_courses.ownerid=imas_users.id AND imas_courses.id='{$_GET['cid']}'";
$result = mysql_query($query) or die("Query failed : " . mysql_error());
if (mysql_result($result,0,0) != $groupid) {
break;
}
}
$query = "INSERT INTO imas_teachers (userid,courseid) VALUES ('{$_GET['tid']}','{$_GET['cid']}')";
mysql_query($query) or die("Query failed : " . mysql_error());
header("Location: http://" . $_SERVER['HTTP_HOST'] . rtrim(dirname($_SERVER['PHP_SELF']), '/\\') . "/forms.php?action=chgteachers&id={$_GET['cid']}");
exit;
case "importmacros":
if ($myrights < 100 || !$allowmacroinstall) { echo "You don't have the authority for this action"; break;}
$uploaddir = rtrim(dirname("../config.php"), '/\\') .'/assessment/libs/';
$uploadfile = $uploaddir . basename($_FILES['userfile']['name']);
if (move_uploaded_file($_FILES['userfile']['tmp_name'], $uploadfile)) {
if (strpos($uploadfile,'.php')!==FALSE) {
$handle = fopen($uploadfile, "r");
$atstart = true;
if ($handle) {
while (!feof($handle)) {
$buffer = fgets($handle, 4096);
if (strpos($buffer,"//")===0) {
$comments .= substr($buffer,2) . "<BR>";
} else if (strpos($buffer,"function")===0) {
$func = substr($buffer,9,strpos($buffer,"(")-9);
if ($comments!='') {
$outlines .= "<h3><a name=\"$func\">$func</a></h3>\n";
$funcs[] = $func;
$outlines .= $comments;
$comments = '';
}
} else if ($atstart && trim($buffer)=='') {
$startcomments = $comments;
$atstart = false;
$comments = '';
} else {
$comments = '';
}
}
}
fclose($handle);
$lib = basename($uploadfile,".php");
$outfile = fopen($uploaddir . $lib.".html", "w");
fwrite($outfile,"<html><body>\n<h1>Macro Library $lib</h1>\n");
fwrite($outfile,$startcomments);
fwrite($outfile,"<ul>\n");
foreach($funcs as $func) {
fwrite($outfile,"<li><a href=\"#$func\">$func</a></li>\n");
}
fwrite($outfile,"</ul>\n");
fwrite($outfile, $outlines);
fclose($outfile);
}
break;
} else {
require("../header.php");
echo "<p>Error uploading file!</p>\n";
require("../footer.php");
exit;
}
case "transfer":
if ($myrights < 40) { echo "You don't have the authority for this action"; break;}
$exec = false;
$query = "UPDATE imas_courses SET ownerid='{$_POST['newowner']}' WHERE id='{$_GET['id']}'";
if ($myrights < 75) {
$query .= " AND ownerid='$userid'";
}
if ($myrights==75) {
$query = "SELECT imas_courses.id FROM imas_courses,imas_users WHERE imas_courses.id='{$_GET['id']}' AND imas_courses.ownerid=imas_users.id AND imas_users.groupid='$groupid'";
$result = mysql_query($query) or die("Query failed : " . mysql_error());
if (mysql_num_rows($result)>0) {
$query = "UPDATE imas_courses SET ownerid='{$_POST['newowner']}' WHERE id='{$_GET['id']}'";
mysql_query($query) or die("Query failed : " . mysql_error());
$exec = true;
}
//$query = "UPDATE imas_courses,imas_users SET imas_courses.ownerid='{$_POST['newowner']}' WHERE ";
//$query .= "imas_courses.id='{$_GET['id']}' AND imas_courses.ownerid=imas_users.id AND imas_users.groupid='$groupid'";
} else {
mysql_query($query) or die("Query failed : " . mysql_error());
$exec = true;
}
if ($exec && mysql_affected_rows()>0) {
$query = "SELECT id FROM imas_teachers WHERE courseid='{$_GET['id']}' AND userid='{$_POST['newowner']}'";
$result = mysql_query($query) or die("Query failed : " . mysql_error());
if (mysql_num_rows($result)==0) {
$query = "INSERT INTO imas_teachers (userid,courseid) VALUES ('{$_POST['newowner']}','{$_GET['id']}')";
mysql_query($query) or die("Query failed : " . mysql_error());
}
$query = "DELETE FROM imas_teachers WHERE courseid='{$_GET['id']}' AND userid='$userid'";
mysql_query($query) or die("Query failed : " . mysql_error());
}
break;
case "deloldusers":
if ($myrights <100) { echo "You don't have the authority for this action"; break;}
$old = time() - 60*60*24*30*$_POST['months'];
$who = $_POST['who'];
require_once("../includes/filehandler.php");
if ($who=="students") {
$query = "SELECT id FROM imas_users WHERE lastaccess<$old AND (rights=0 OR rights=10)";
$result = mysql_query($query) or die("Query failed : " . mysql_error());
while ($row = mysql_fetch_row($result)) {
$uid = $row[0];
$query = "DELETE FROM imas_assessment_sessions WHERE userid='$uid'";
mysql_query($query) or die("Query failed : " . mysql_error());
$query = "DELETE FROM imas_exceptions WHERE userid='$uid'";
mysql_query($query) or die("Query failed : " . mysql_error());
$query = "DELETE FROM imas_grades WHERE userid='$uid'";
mysql_query($query) or die("Query failed : " . mysql_error());
$query = "DELETE FROM imas_forum_views WHERE userid='$uid'";
mysql_query($query) or die("Query failed : " . mysql_error());
$query = "DELETE FROM imas_students WHERE userid='$uid'";
mysql_query($query) or die("Query failed : " . mysql_error());
//these could break parent structure for forums!
//$query = "DELETE FROM imas_forum_posts WHERE forumid='{$row[0]}' AND posttype=0";
//mysql_query($query) or die("Query failed : " . mysql_error());
deletealluserfiles($uid);
}
$query = "DELETE FROM imas_users WHERE lastaccess<$old AND (rights=0 OR rights=10)";
} else if ($who=="all") {
$query = "DELETE FROM imas_users WHERE lastaccess<$old AND rights<100";
}
mysql_query($query) or die("Query failed : " . mysql_error());
break;
case "addgroup":
if ($myrights <100) { echo "You don't have the authority for this action"; break;}
$query = "SELECT id FROM imas_groups WHERE name='{$_POST['gpname']}'";
$result = mysql_query($query) or die("Query failed : " . mysql_error());
if (mysql_num_rows($result)>0) {
echo "<html><body>Group name already exists. <a href=\"forms.php?action=listgroups\">Try again</a></body></html>\n";
exit;
}
$query = "INSERT INTO imas_groups (name) VALUES ('{$_POST['gpname']}')";
mysql_query($query) or die("Query failed : " . mysql_error());
break;
case "modgroup":
if ($myrights <100) { echo "You don't have the authority for this action"; break;}
$query = "SELECT id FROM imas_groups WHERE name='{$_POST['gpname']}'";
$result = mysql_query($query) or die("Query failed : " . mysql_error());
if (mysql_num_rows($result)>0) {
echo "<html><body>Group name already exists. <a href=\"forms.php?action=modgroup&id={$_GET['id']}\">Try again</a></body></html>\n";
exit;
}
$query = "UPDATE imas_groups SET name='{$_POST['gpname']}' WHERE id='{$_GET['id']}'";
mysql_query($query) or die("Query failed : " . mysql_error());
break;
case "delgroup":
if ($myrights <100) { echo "You don't have the authority for this action"; break;}
$query = "DELETE FROM imas_groups WHERE id='{$_GET['id']}'";
mysql_query($query) or die("Query failed : " . mysql_error());
$query = "UPDATE imas_users SET groupid=0 WHERE groupid='{$_GET['id']}'";
mysql_query($query) or die("Query failed : " . mysql_error());
$query = "UPDATE imas_libraries SET groupid=0 WHERE groupid='{$_GET['id']}'";
mysql_query($query) or die("Query failed : " . mysql_error());
break;
case "removediag";
if ($myrights <60) { echo "You don't have the authority for this action"; break;}
$query = "SELECT imas_users.id,imas_users.groupid FROM imas_users JOIN imas_diags ON imas_users.id=imas_diags.ownerid AND imas_diags.id='{$_GET['id']}'";
$result = mysql_query($query) or die("Query failed : " . mysql_error());
$row = mysql_fetch_row($result);
if (($myrights<75 && $row[0]==$userid) || ($myrights==75 && $row[1]==$groupid) || $myrights==100) {
$query = "DELETE FROM imas_diags WHERE id='{$_GET['id']}'";
mysql_query($query) or die("Query failed : " . mysql_error());
$query = "DELETE FROM imas_diag_onetime WHERE diag='{$_GET['id']}'";
mysql_query($query) or die("Query failed : " . mysql_error());
}
break;
}
session_write_close();
if (isset($_GET['cid'])) {
header("Location: http://" . $_SERVER['HTTP_HOST'] . $imasroot . "/course/course.php?cid={$_GET['cid']}");
} else {
header("Location: http://" . $_SERVER['HTTP_HOST'] . rtrim(dirname($_SERVER['PHP_SELF']), '/\\') . "/admin.php");
}
exit;
?>