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handler.php
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handler.php
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<?php
session_start();
//Variables
include_once './captcha/securimage.php';
$securimage = new Securimage();
if ($securimage->check($_POST['captcha']) == false) {
$_SESSION['error']='captcha';
header("Location: ./error.php");
exit();
}
$stunumber = $_POST["number"];
$stunumber = substr($stunumber,0,12);//Overflow prevention
$stunumber = strip_tags($stunumber);
$stuip = $_SERVER['REMOTE_ADDR'];
$stuname = $_POST['name'];
$filename = $_FILES['userfile']['name'];
$courseid = $_POST['courseid'];
$coursecategoryid = $_POST['coursecategoryid'];
//SQL injection prevention
if (preg_match('#(DROP|INSERT|UPDATE|TABLE|;)#i',$stuname))
{
$_SESSION['error']= 'injection';
header("Location: ./error.php");
exit();
}
//End SQL injection prevention
//Begin Database connection
$upconnect = new PDO('sqlite:./db/db.sqlite');
$uploaders = $upconnect->query("SELECT * FROM uploaded WHERE course = '$courseid'");
$trustlists = $upconnect->query("SELECT * FROM trustlist");
//End Database connection
$accept = 0;
function validate($test_key,$stunumber)
{
$stulen = strlen($stunumber);
$test_keylen = strlen($test_key);
if($stulen != $test_keylen)
{
return 0;//Meet error
}
for($i=0;$i<$stulen;$i++)
{
if($test_key[$i]!= '*' && ($test_key[$i]-$stunumber[$i]) )
return 0;
}
return 1;
}
//Begin Student number isolation and validation
foreach ($trustlists as $test_key) {
if(validate($test_key['number'],$stunumber))
{
$accept = 1;
}
}
//End Student number isolation and validation
//Prevent Duplication
foreach ($uploaders as $test_key) {
if($stunumber == $test_key["number"])
{
$_SESSION['error']= 'duplicate';
header("Location: ./error.php");
exit();
}
}
//End Duplication Prevention
//If anything failed, return to upload page
if($accept != 1)
{
header("Location: ./index.php");
exit();
}
//If success,keep uploading,Upload to /upload/$coursecategory/$courseid
$uploaddir = './upload/';
$uploadfile = $uploaddir . $coursecategoryid . "/" . $courseid . "/" . basename($_FILES['userfile']['name']);
$FileType = pathinfo($uploadfile,PATHINFO_EXTENSION);
?>
<!DOCTYPE html>
<html lang="zh">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<meta http-equiv="x-ua-compatible" content="ie=edge">
<title>提交信息</title>
<!-- Font Awesome -->
<link rel="stylesheet" href="./css/font-awesome.min.css">
<!-- Bootstrap core CSS -->
<link href="./css/bootstrap.min.css" rel="stylesheet">
<!-- Material Design Bootstrap -->
<link href="./css/mdb.min.css" rel="stylesheet">
</head>
<body>
<img src="./img/success.jpg" style="position: fixed;width: 100%; opacity: 0.6; z-index: -100" alt="">
<?php include('./partial/nav.php') ?>
<div class="container">
<div class="page-header">
<h1>上传信息</h1>
</div><!--/ header -->
<div class="jumbotron">
<?php
if (
(
$FileType == "7z"
|| $FileType == "rar"
|| $FileType == "zip"
)
&& ($_FILES["userfile"]["size"] < 1024000000)) // Less than 1 Gib
{
if ($_FILES["userfile"]["error"] > 0)
{
echo "错误：: " . $_FILES["userfile"]["error"] . "<br>";
}
else
{
if (move_uploaded_file($_FILES['userfile']['tmp_name'], $uploadfile)) {
echo "<p>";
echo "文件";
echo $_FILES['userfile']['name'];
echo "已经成功上传";
echo "</p>";
$realname = $stunumber . "-" . $filename;
date_default_timezone_set('Asia/Hong_Kong');
$time = date('Y-m-d H:i:s');
$upconnect->exec("INSERT INTO 'uploaded' ('number','ip','name','filename','course','time') VALUES ('$stunumber','$stuip','$stuname','$realname','$courseid','$time');");
} else {
echo "<p>";
echo "文件错误！";
echo "</p>";
}
}
}
else
{
echo "文件格式不正确！";
}
$correctname= $uploaddir . $coursecategoryid . "/" . $courseid . "/" . $stunumber . "-" . $_FILES['userfile']['name'];
rename($uploadfile,$correctname);
?>
</div>
</div>
</div> <!-- /container -->
<?php include('./partial/footer.php') ?>
<!-- SCRIPTS -->
<!-- JQuery -->
<script type="text/javascript" src="./js/jquery-3.1.1.min.js"></script>
<!-- Bootstrap tooltips -->
<script type="text/javascript" src="./js/tether.min.js"></script>
<!-- Bootstrap core JavaScript -->
<script type="text/javascript" src="./js/bootstrap.min.js"></script>
<!-- MDB core JavaScript -->
<script type="text/javascript" src="./js/mdb.min.js"></script>
</body>
</html>