CODING EXAM PORTAL

Clone the code or fork it to your local machine

Step 1: Host the website

Upload all the files except the folder code-judge-compiler inside ./compiler/
Move the codejudge-compiler to your compiler machine
You need to set a port for the compiler and make sure the compiler machine is accessable in WEB
Make sure to write rules for firewall as someone code can take over your comiler server machine with injected code!

Step 2: Install all the languages

Make sure all the languages are compiling in your server

Step 3: Admin Registration

To set exam and question use admin portal

CODE EDITOR

We used ACE Editor as our editor you can use anything! All required files for ACE Editor is inside ./src/ace.js

SCRIPT FOR ACE EDITOR

function createEditor(name) {
        // find the textarea
        var textarea = document.querySelector("form textarea[name=" + name + "]");

        // create ace editor 
        var editor = ace.edit()
        editor.setTheme("ace/theme/dracula");
        editor.session.setMode("ace/mode/python");
        editor.setOptions({
          enableBasicAutocompletion: true,
          enableSnippets: true,
          enableLiveAutocompletion: true,
          enableEmmet: true
        });
        editor.container.style.height = "250px"
        editor.session.setValue(textarea.value)
        // replace textarea with ace
        textarea.parentNode.insertBefore(editor.container, textarea)
        textarea.style.display = "none"
        // find the parent form and add submit event listener
        var form = textarea
        while (form && form.localName != "form") form = form.parentNode
        form.addEventListener("submit", function() {
            // update value of textarea to match value in ace
            textarea.value = editor.getValue()
        }, true)
    }
    createEditor("soln")

NOTE: To use `ACE Editor in your textfield use the below code (Please consider the aboce code as a part of it).

<textarea style="font-family: mono; height:400px;" class="span9" row="200" col="400" name="soln" id="editor">

Note:

Adding new languages is easy just follow the code which are already there!

//for python3 support

public void compile() {
		try {
			BufferedWriter out = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(dir + "/" + file)));
			out.write(contents);
			out.close();
			// create the execution script
			out = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(dir + "/run.sh")));
			out.write("cd \"" + dir +"\"\n");
			out.write("chroot .\n");
			out.write("python3 " + file + "< in.txt > out.txt 2>err.txt");
			out.close();
			Runtime r = Runtime.getRuntime();
			Process p = r.exec("chmod +x " + dir + "/run.sh");
			p.waitFor();
			p = r.exec(dir + "/run.sh"); // execute the script
			TimedShell shell = new TimedShell(this, p, 3000);
			shell.start();
			p.waitFor();
		} catch (FileNotFoundException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		} catch (InterruptedException e) {
			e.printStackTrace();
		}
	}

//for Cpp support

public void compile() {
		try {
			BufferedWriter out = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(dir + "/" + file)));
			out.write(contents);
			out.close();
			// create the compiler script
			out = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(dir + "/compile.sh")));
			out.write("cd \"" + dir +"\"\n");
			out.write("g++ -lm " + file + " 2> err.txt");
			out.close();
			Runtime r = Runtime.getRuntime();
			Process p = r.exec("chmod +x " + dir + "/compile.sh");
			p.waitFor();
			p = r.exec(dir + "/compile.sh"); // execute the compiler script
			p.waitFor();
		} catch (FileNotFoundException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		} catch (InterruptedException e) {
			e.printStackTrace();
		}
	}
	
	public void execute() {
		try {
			// create the execution script
			BufferedWriter out = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(dir + "/run.sh")));
			out.write("cd \"" + dir +"\"\n");
			out.write("chroot .\n");
			out.write("./a.out < in.txt > out.txt");
			out.close();
			Runtime r = Runtime.getRuntime();
			Process p = r.exec("chmod +x " + dir + "/run.sh");
			p.waitFor();
			p = r.exec(dir + "/run.sh"); // execute the script
			TimedShell shell = new TimedShell(this, p, 3000);
			shell.start();
			p.waitFor();
		} catch (FileNotFoundException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		} catch (InterruptedException e) {
			e.printStackTrace();
		}
	}

public void compile() {
		try {
			BufferedWriter out = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(dir + "/" + file)));
			out.write(contents);
			out.close();
			// create the execution script
			out = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(dir + "/run.sh")));
			out.write("cd \"" + dir +"\"\n");
			out.write("chroot .\n");
			out.write("ruby " + file + "< in.txt > out.txt 2>err.txt");
			out.close();
			Runtime r = Runtime.getRuntime();
			Process p = r.exec("chmod +x " + dir + "/run.sh");
			p.waitFor();
			p = r.exec(dir + "/run.sh"); // execute the script
			TimedShell shell = new TimedShell(this, p, 3000);
			shell.start();
			p.waitFor();
		} catch (FileNotFoundException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		} catch (InterruptedException e) {
			e.printStackTrace();
		}
	}

Note:

We need execute() function for languages like cpp, c, java, etc.

We don't need execute() function for languages like python, python3, pypy, etc.

GET ACCESS TO THE COMPILER SERVER

Install Visual Studio Code to run the server side script with ease!
Visual Studio Code Link
Make sure your compiler server support python, pypy, java, C++, ruby, C.

// connect to the java compiler server to compile the file and fetch the results

$socket = fsockopen($compilerhost, $compilerport);
if($socket) {
    fwrite($socket, $_POST['filename']."\n");
    $query = "SELECT time, input, output FROM problems WHERE sl='".$_POST['id']."'";
	$result = mysqli_query($db,$query);
	$fields = mysqli_fetch_array($result);
	fwrite($socket, $fields['time']."\n");
	$soln = str_replace("\n", '$_n_$', treat($_POST['soln']));
	fwrite($socket, $soln."\n");
	$input = str_replace("\n", '$_n_$', treat($fields['input']));
	fwrite($socket, $input."\n");
	fwrite($socket, $lang."\n");
	$status = fgets($socket);
	$contents = "";

Note:

The working code can be found in eval.php file.
The variable $compilerhost, $compilerport in the below line contains compiler server ip address & port to make a socket connection

SOCKET CONNECTION

// $host="localhost";
// $user="root";
// $password="";
// $database="codewar";
$compilerhost="192.168.0.5";
$compilerport=3029;

//reading compiler server details
$socket = fsockopen($compilerhost, $compilerport);

EVALUATION OF CODE

if($status == 0) {
    // oops! compile error
    $query = "UPDATE solve SET status=1 WHERE (username='".$_SESSION['username']."' AND problem_id='".$_POST['id']."')";
    mysqli_query($db,$query);
    $_SESSION['cerror'] = trim($contents);
    header("Location: solve.php?cerror=1&id=".$_POST['id']);
} else if($status == 1) {
    if(trim($contents) == trim(treat($fields['output']))) {
	// holla! problem solved
	$sql= "SELECT * FROM problems where sl='".$_POST['id']."'";
	$r = mysqli_query($db,$sql);
	$f= mysqli_fetch_array($r);
	$s=$f['points'];
	$query = "UPDATE solve SET status=2, points='$s' WHERE (username='".$_SESSION['username']."' AND problem_id='".$_POST['id']."')";
	mysqli_query($db,$query);
	header("Location: index.php?success=1");
	} else {
		// duh! wrong output
		echo trim($contents);
		$query = "UPDATE solve SET status=1 WHERE (username='".$_SESSION['username']."' AND problem_id='".$_POST['id']."')";
		mysqli_query($db,$query);
		header("Location: solve.php?oerror=1&id=".$_POST['id']);
	}
} else if($status == 2) {
	$query = "UPDATE solve SET status=1 WHERE (username='".$_SESSION['username']."' AND problem_id='".$_POST['id']."')";
	mysqli_query($db,$query);
	header("Location: solve.php?terror=1&id=".$_POST['id']);
    }
}

The working code can be found in eval.php file.

GRAP SCRIPT

window.onload = function () { 
		
	var chart = new CanvasJS.Chart("chartContainer", {
        animationEnabled: true, 
			title:{ 
				text: "<?php echo $username ?>'s SCORE GRAPH"
			},	 
			axisY: { 
				title: "SCORE", 
				titleFontColor: "#4F81BC", 
				lineColor: "#4F81BC", 
				labelFontColor: "#4F81BC", 
				tickColor: "#4F81BC"
			}, 	 
			toolTip: { 
				shared: true 
			}, 
			legend: { 
				cursor:"pointer", 
				itemclick: toggleDataSeries 
			}, 
			data: [{ 
				type: "line", 
				name: "SCORE", 
				legendText: "SCORE", 
				showInLegend: true, 
                dataPoints:<?php echo json_encode($dataPoints,
                            JSON_NUMERIC_CHECK); ?> 
			}, ] 
			}); 
		chart.render(); 
			function toggleDataSeries(e) { 
                    if (typeof(e.dataSeries.visible) === "undefined"
                    			|| e.dataSeries.visible) { 
					e.dataSeries.visible = false; 
				} 
				    else { 
					    e.dataSeries.visible = true; 
				} 
			chart.render(); 
		} 
		
    }

TITLE UPDATE CODE

//logical part
if($cup < 1200){
     mysqli_query($db,"UPDATE users SET title='Newbie',cup='$cup' WHERE user_id='$id'");
  }
  elseif($cup >1200 and $cup<1400)
  {
    mysqli_query($db,"UPDATE users SET title='Pupil',cup='$cup' WHERE user_id='$id'");
  }
  elseif($cup >1400 and $cup < 1600)
  {
    mysqli_query($db,"UPDATE users SET title='Specialist',cup='$cup' WHERE user_id='$id'");
  }
  elseif($cup >1600 and $cup < 1900)
  {
    mysqli_query($db,"UPDATE users SET title='Expert',cup='$cup' WHERE user_id='$id'");
  }
  elseif($cup >1900 and $cup < 2100)
  {
    mysqli_query($db,"UPDATE users SET title='Candidate Master',cup='$cup' WHERE user_id='$id'");
  }
  elseif($cup >2100 and $cup < 2300)
  {
    mysqli_query($db,"UPDATE users SET title='Master',cup='$cup' WHERE user_id='$id'");
  }
  elseif($cup >2300 and $cup < 2400)
  {
    mysqli_query($db,"UPDATE users SET title='International Master',cup='$cup' WHERE user_id='$id'");
  }
  elseif($cup >2400 and $cup < 2600)
  {
    mysqli_query($db,"UPDATE users SET title='International Grandmaster',cup='$cup' WHERE user_id='$id'");
  }
  elseif($cup >3000)
  {
    mysqli_query($db,"UPDATE users SET title='Legendry Grandmaster',cup='$cup' WHERE user_id='$id'");
  }

ADDING FRIENDS

<?php
if(isset($_POST['frnd'])){
    $idb =$_POST['god'];
    $query=mysqli_query($db,"SELECT * FROM users where user_id='$idb'")or die(mysqli_error($db));
    $row=mysqli_fetch_array($query);
    $u=$row['username'];
    $queryUser="SELECT * FROM friends where user_id_a='$id' and user_id_b='$idb'";
    $result = mysqli_query($db,$queryUser);
    $rowUser=mysqli_fetch_array($result);
    if(mysqli_num_rows($result)>0){
        $c=$rowUser['flag'];
    }
    if(mysqli_num_rows($result)==0){
        $sql="INSERT INTO friends(user_id_a,user_id_b,status,flag) VALUES($id,$idb,'Friends',1)";
        mysqli_query($db,$sql) or die ('Error in updating Database');
?>
 <script type="text/javascript">
        alert("Added <?php echo $u; ?> As Friend!");
        window.location = "user.php?user=<?php echo $u; ?>";
</script>
<?php
    }
    else if($c=='1'){
        $query = "UPDATE friends SET status='Add Friend', flag='0'
        WHERE user_id_a = '$id' and user_id_b='$idb'";
        $result = mysqli_query($db, $query) or die(mysqli_error($db));
?>
<script type="text/javascript">
        alert("Removed <?php echo $u; ?> From Friend!");
        window.location = "user.php?user=<?php echo $u; ?>";
</script>
<?php
        }else{
            $query = "UPDATE friends SET status='Friends', flag='1'
            WHERE user_id_a = '$id' and user_id_b='$idb'";
            $result = mysqli_query($db, $query) or die(mysqli_error($db));
?>
<script type="text/javascript">
        alert("Added <?php echo $u; ?> As Friend!");
        window.location = "user.php?user=<?php echo $u; ?>";
</script>
<?php
    }
}
?>

CONTEST SCHEDULE

$query=mysqli_query($db,"SELECT * FROM users where user_id='$id'")or die(mysqli_error($db));
$rows=mysqli_fetch_array($query);
$d1=date("Y-m-d");
$sql=mysqli_query($db,"SELECT * FROM contest where start BETWEEN CURDATE() and DATE_ADD(CURDATE(), INTERVAL 30 DAY) order by start")or die(mysqli_error($db));
$num_row=mysqli_num_rows($sql);
$d1=date("Y-m-d");
if($num_row>0){
    while ($con=mysqli_fetch_assoc($sql)){
        $diff = (strtotime( $con['start'])-strtotime($d1));
        $contest = strtotime($con['starttime'])-time();
        $y = floor($diff / (365*60*60*24));
        $m = floor(($diff - $y * 365*60*60*24) / (30*60*60*24));
        $d = floor(($diff - $y* 365*60*60*24 - $m*30*60*60*24)/ (60*60*24);
        $d2='DAYS';
        $h='HRS';
    if ($y<0){
        $d='';
        $d2='CONTEST ENDED';
        }

WANT TO CONTRIBUTE

Clone the project make a new brunch with your name
commit it and make pull request
add me as a reviewer

Developers Profiles

Asijit Paul
@twitter
@facebook
@instagram
Currently working at PwC SDC Kolkata

License

Permission to use, copy, modify, and/or distribute this software for any purpose without fee is hereby granted, provided that the above copyright notice and this permission notice appear in all copies.

Permission to use, copy, modify, and/or distribute this software for any purpose with fee is hereby not granted!

THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

Name		Name	Last commit message	Last commit date
Latest commit History 14 Commits
blog		blog
compiler		compiler
css		css
img		img
js		js
libs		libs
plot		plot
src-noconflict		src-noconflict
src		src
stage		stage
upload/image		upload/image
404.php		404.php
README.md		README.md
about.php		about.php
backup.txt		backup.txt
codewar.sql		codewar.sql
connection.php		connection.php
contact.php		contact.php
contest.php		contest.php
footer.php		footer.php
friends.php		friends.php
header.php		header.php
home.php		home.php
index.php		index.php
logout.php		logout.php
mobile.php		mobile.php
news.php		news.php
profile.php		profile.php
ranking.php		ranking.php
ratingupdater.php		ratingupdater.php
register.php		register.php
search.php		search.php
test.php		test.php
titleupdater.php		titleupdater.php
updateprofile.php		updateprofile.php
user.php		user.php

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Repository files navigation

CODING EXAM PORTAL

Clone the code or fork it to your local machine

Step 1: Host the website

Step 2: Install all the languages

Step 3: Admin Registration

CODE EDITOR

SCRIPT FOR ACE EDITOR

Note:

Note:

GET ACCESS TO THE COMPILER SERVER

Note:

SOCKET CONNECTION

EVALUATION OF CODE

GRAP SCRIPT

TITLE UPDATE CODE

ADDING FRIENDS

CONTEST SCHEDULE

WANT TO CONTRIBUTE

Developers Profiles

License

About

Releases

Packages

Languages

paulasijit/coding_platform

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Repository files navigation

CODING EXAM PORTAL

Clone the code or fork it to your local machine

Step 1: Host the website

Step 2: Install all the languages

Step 3: Admin Registration

CODE EDITOR

SCRIPT FOR ACE EDITOR

Note:

Note:

GET ACCESS TO THE COMPILER SERVER

Note:

SOCKET CONNECTION

EVALUATION OF CODE

GRAP SCRIPT

TITLE UPDATE CODE

ADDING FRIENDS

CONTEST SCHEDULE

WANT TO CONTRIBUTE

Developers Profiles

License

About

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