20esaua/tgcp.php

## tgcp.php
<?php
# This is the location where program will reside
if (isset($_SERVER["HTTP_ORIGIN"]) || isset($_SERVER['HTTP_REFERER']) ) {
   $valid_site  = false;
   $origin_site = isset($_SERVER['HTTP_ORIGIN']) ? $_SERVER['HTTP_ORIGIN']: $_SERVER['HTTP_REFERER'];
   $origin_site = trim($origin_site);
   $pattern = "/(.*)tutorialspoint.com(.*)/";
   if( preg_match($pattern, $origin_site, $matches )){
      $valid_site = true;
   }
   $pattern = "/(.*)compileonline.com(.*)/";
   if( preg_match($pattern, $origin_site, $matches )){
      $valid_site = true;
   }
   if(  !$valid_site ){
       echo "Sorry, you are not allowed to access the service";
       exit(0);
   }
}
session_start();
$time = time() ;
if(isset($_SESSION['visit'])){
   $last_visit = $_SESSION['visit'];
   if(  $time - $last_visit < 2 ){
      echo "<b>Duplicate request received....its ignored!</b>";
      exit(0);
   }
}
$_SESSION['visit'] = $time;
session_write_close();

$DOCKER = "bigboss";
$HOME_DIR = "/home/cg/root";
$preview = 0;
$compile = 0;
$ext = null;

# These are the variables coming from client.
$uid = !empty($_POST['uid'])? $_POST['uid']: null;
if( $uid <= 5000 || $uid == null){
   $uid = 5000;
}
$code = !empty($_POST['code'])? $_POST['code']: null;
$lang = !empty($_POST['lang'])? $_POST['lang']: null;
$stdinput = !empty($_POST['stdinput'])? $_POST['stdinput']: null;
$compile = !empty($_POST['compile'])? $_POST['compile']: null;
$execute = !empty($_POST['execute'])? $_POST['execute']: null;
$mainfile = !empty($_POST['mainfile'])? $_POST['mainfile']: null;
$ext = !empty($_POST['ext'])? $_POST['ext']: null;
if(strlen($code) < 1){
   echo "<b>Please type your source code in coding area.</b>";
   exit(0);
}
if(strlen($lang) < 1){
   echo "<b>Please send appropriate language code.</b>";
   exit(0);
}
# Just to filter out spamming related to xmr-stak-cpu
$xmr = preg_split("/(\n|;)/", $code);
foreach( $xmr as $line ){
   $line = trim($line);
   $pattern = "/(.*)xmr-stak-cpu(.*)/";
   if(preg_match($pattern, $line, $matches )){
      echo "What do you want????? contact me at contact@tutorialspoint.com";
      exit;
   }
}
$uid = intval( $uid );

# Change User ID of this process.
#posix_setuid( $uid );

$HOME_DIR = $HOME_DIR . "/" . $uid;
if(!file_exists($HOME_DIR)){
   mkdir($HOME_DIR, 0700, true);
}
chown($HOME_DIR, $uid );
if( !strcmp( $lang, "rexx") ){
   $uid = "1002";
   chown($HOME_DIR, "rexx" );
   chmod($HOME_DIR, 0711 );
}else if( !strcmp( $lang, "objc") ){
   $uid = "1001";
   chown($HOME_DIR, "objc" );
   chmod($HOME_DIR, 0711 );
}
chdir($HOME_DIR);
# Let's clean home directory
exec("rm -rf $HOME_DIR/*", $result);
$code .= "\n";
$code = preg_replace('/(\r\n|\r|\n)/s',"\n", $code);

# Just for fork bomb, need to find out another solution.
$code = preg_replace('/\:\(\)\{/s', "", $code);
$code = preg_replace('/\:\|\:\&/s', "", $code);
$code = preg_replace('/\:\|\:/s', "", $code);
$code = preg_replace('/\&\}\;/s', "", $code);
$code = preg_replace('/\& \}\;/s', "", $code);
$code = preg_replace('/.\/\$0\|.\/\$0\&/s', "", $code);
$code = preg_replace('/\%0\|\%0/s', "", $code);
$code = preg_replace('/fork/s', "", $code);
$code = preg_replace('/mov\s+eax,\s*2/s', "", $code);

if( !strcmp($lang, "rscript")){
   $code = 'png("plot.png", width=4, height=4, units="in", res=300)' . "\n" . $code;
}
if( !strcmp( $lang, "jsp") || !strcmp( $lang, "coldfusion")){
    $DOCKER = "railboss";
    $execute =  "curl -s http://127.0.0.1:8888/$uid/$mainfile";
}
if( !strcmp( $lang, "oracle")){
    $DOCKER = "oracleboss";
    $uid = "root";
    // Back slash special character $.
    $code =  preg_replace('/\$/', '\\\\$0', $code);
$code = <<<SQLBLOCK
sqlplus -s system/oracle <<EOF
SET MARKUP HTML ON SPOOL ON;
$code
EOF
SQLBLOCK;
}
if( !strcmp( $lang, "java") || !strcmp( $lang, "java8") || !strcmp( $lang, "jdbc")){
    $main = preg_split("/(\n|;)/", $code);
    $package = "";
    $class = "";
    $package_flag = 1;
    $class_flag = 1;
    foreach( $main as $line ){
         $line = trim($line);
         $pattern = "/^package\s+(.*)/";
         if( $package_flag && preg_match($pattern, $line, $matches )){
             $package = preg_replace('/\./', "/", $matches[1]);
             $package_flag = 0;
         }
         $pattern = "/^public(\s+)class(\s+)(\w+).*/";
         if( $class_flag && preg_match($pattern, $line, $matches )){
            $class = trim($matches[3]);
            $class_flag = 0;
         }
         $pattern = "/^public(\s+)enum(\s+)(\w+).*/";
         if( $class_flag && preg_match($pattern, $line, $matches )){
            $class = trim($matches[3]);
            $class_flag = 0;
         }
    }
    if( !strlen($class) ){
         echo "Error - At least one public class is required in main file";
         exit(0);
    }
    if( strlen($package) > 255 ){
         echo "Error - Too long package name in main file";
         exit(0);
    }
    if( strlen($package )){
         $mainfile  = "$package/$class" . ".java";
         $compile = "$compile $package/$class" . ".java";
         $execute = "$execute $package/$class";
         mkdir("$HOME_DIR/$package", 0755, true);
         chown("$HOME_DIR/$package", $uid );
     }else{
         $mainfile = "$class" . ".java";
         $compile = "$compile $class" . ".java";
         $execute = "$execute $class";
     }
}
$srcfile = $HOME_DIR . "/" . $mainfile;
file_put_contents( $srcfile, $code );
if(!file_exists($srcfile)){
    echo "<b>Error : Unable to create src file</b>";
    exit(0);
}
if( isset( $_POST['util']) ){
    $utilfile = $HOME_DIR . "/" . "util." . $ext;
    file_put_contents( $utilfile, $_POST['util'] );
    if(!file_exists($utilfile)){
       echo "<b>Error : Unable to create util file</b>";
       exit(0);
    }
}
if( isset( $_POST['support']) ){
    $supportfile = $HOME_DIR . "/" . "support." . $ext;
    file_put_contents( $supportfile, $_POST['support'] );
    if(!file_exists($supportfile)){
       echo "<b>Error : Unable to create support file</b>";
       exit(0);
    }
}
if( isset( $_POST['header']) ){
    $headerfile = $HOME_DIR . "/" . "main.h";
    file_put_contents( $headerfile, $_POST['header'] );
    if(!file_exists($headerfile)){
       echo "<b>Error : Unable to create header file</b>";
       exit(0);
    }
}
if( isset( $_POST['inputtext']) ){
    $inputfile = !empty($_POST['inputfile'])? $_POST['inputfile']: "input.txt";
    $inputfile = preg_replace('/_/s', ".", $inputfile);
    $inputfile = $HOME_DIR . "/" . "$inputfile";
    file_put_contents( $inputfile, $_POST['inputtext'] );
    if(!file_exists($inputfile)){
       echo "<b>Error : Unable to create input file</b>";
       exit(0);
    }
}

if( strlen( $compile ) ){
   echo "<span style='line-height: 22px;'><b>$$compile</span></b><br>";
   $compile = "cd $HOME_DIR; timeout 10s $compile";
   proc_exec($compile, $HOME_DIR, null);
}
$binary = $execute;
if( !strcmp( $lang, "fsharp") || !strcmp( $lang, "csharp") || !strcmp( $lang, "ilasm") || !strcmp( $lang, "vb.net") ){
   $binary = "main.exe";
}
if( !strcmp( $lang, "java") || !strcmp( $lang, "java8") || !strcmp( $lang, "jdbc") ){
   $binary = basename($mainfile, ".java");
   $binary = $binary. ".class";
   if( strlen($package) ){
      $binary = basename($mainfile, ".java");
      $binary = $package . "/" . $binary. ".class";
   }
}
if( !strcmp( $lang, "scala") ){
   $binary = basename($mainfile, ".scala");
   $binary = $binary. ".class";
}
if( !strcmp( $lang, "kotlin") ){
   $binary = basename($mainfile, ".kt");
   $binary = $binary. ".jar";
}
if( !strcmp( $lang, "erlang") ){
   $binary = basename($mainfile, ".erl");
   $binary = $binary. ".beam";
}
if( !strcmp( $lang, "mozart") ){
   $binary = basename($mainfile, ".oz");
   $binary = $binary. ".oza";
}
if( !strcmp( $lang, "pawn") ){
   $binary = basename($mainfile, ".p");
   $binary = $binary. ".amx";
}
if( !strcmp( $lang, "verilog") ){
   $binary =  "main";
}
#if( !strcmp( $lang, "c") || !strcmp( $lang, "cpp") || !strcmp( $lang, "c99") || !strcmp( $lang, "cpp11") || !strcmp( $lang, "cpp0x") || !strcmp( $lang, "csharp")){
#    $DOCKER = "cppboss";
#}
if( strlen( $execute ) && file_exists($binary)){
   echo "<span style='line-height: 22px;'><b>$$execute</b></span><br>";
   $execute = "cd $HOME_DIR; timeout 10s $execute";
   proc_exec($execute, $HOME_DIR, $stdinput);
}
if( !strlen( $compile ) && strlen($execute) && !strcmp( $lang, "swift")){
   $DOCKER = "swiftboss";
   echo "<span style='line-height: 22px;'><b>$$execute</b></span><br>";
   $execute = "cd $HOME_DIR; timeout 10s $execute";
   proc_exec($execute, $HOME_DIR, $stdinput);
   exit;
}
if( !strlen( $compile ) && strlen($execute)){
   if( !strcmp( $lang, "jsp") || !strcmp( $lang, "coldfusion") ){
      $execute = "cd $HOME_DIR; timeout 10s $execute";
   }else if( !strcmp( $lang, "phpweb") || !strcmp( $lang, "oracle")){
      $execute = "cd $HOME_DIR; timeout 10s $execute";
   }else{
      echo "<span style='line-height: 22px;'><b>$$execute</b></span><br>";
      $execute = "cd $HOME_DIR; timeout 10s $execute";
   }
   proc_exec($execute, $HOME_DIR, $stdinput);
   exit;
}
/* Function to execute final binary */
function proc_exec($cmd, $cwd, $stdinput){
    $starttime = time();
    $descriptorspec = array(
        0 => array("pipe", "r"),
        1 => array("pipe", "w"),
        2 => array("pipe", "w")
    );
    $process = proc_open($cmd, $descriptorspec, $pipes, $cwd, $_ENV);
    if (is_resource($process)) {
        list ($in, $out, $err) = $pipes;
        stream_set_blocking( $in, true );
        stream_set_blocking( $out, false );
        stream_set_blocking( $err, false );
        if( strlen($stdinput) > 0 ){
           /* pass required stdin inputs */
           foreach( explode("\n", $stdinput) as $a ){
               $inputlist = $a . "\n";
               fwrite($in, $inputlist);
           }
        }
        fclose($in);
        /* Now read program output */
        $stdout = '';
        $stderr = '';
        $timeout = 60;
         for(;;) {
            usleep(50000);
            $stat = proc_get_status($process); // get info on process
            if ($stat['running']) { // still running
               if ((time() - $starttime) > $timeout) { // check for timeout
                  // close descriptors
                  fclose($out);
                  fclose($err);
                  proc_terminate($process); // terminate process
                  /* Terminate actual process */
                  echo "Sorry...system timeout!<br>";
                  break;
               }
            } else {
               // process finished before timeout
               $stdout = stream_get_contents($out); // get output from stdout.
               GLOBAL $lang;
               if( !strcmp( $lang, "jsp") || !strcmp( $lang, "coldfusion") || !strcmp( $lang, "phpweb") || !strcmp( $lang, "oracle")){
                  echo $stdout;
               }else{
                   echo (htmlentities($stdout));
               }
               $stderr = stream_get_contents($err); // get output from stderr.
               if( !strcmp( $lang, "jsp") || !strcmp( $lang, "coldfusion") || !strcmp( $lang, "phpweb") || !strcmp( $lang, "oracle")){
                  echo $stderr;
               }else{
                   echo (htmlentities($stderr));
               }
               // close descriptors
               fclose($out);
               fclose($err);
               proc_close($process); // close process
               break;
            }
        }
        GLOBAL $HOME_DIR;
        $files = glob("$HOME_DIR/*.{jpg,jpeg,png}", GLOB_BRACE);
        foreach($files as $imagefile) {
           $type = pathinfo($imagefile, PATHINFO_EXTENSION);
           $data = file_get_contents($imagefile);
           $base64 = 'data:image/' . $type . ';base64,' . base64_encode($data);
           echo "<img src=\"$base64\" style=\"width:80%\"/>";
        }
    }
}
	<?php
	# This is the location where program will reside
	if (isset($_SERVER["HTTP_ORIGIN"]) \|\| isset($_SERVER['HTTP_REFERER']) ) {
	$valid_site = false;
	$origin_site = isset($_SERVER['HTTP_ORIGIN']) ? $_SERVER['HTTP_ORIGIN']: $_SERVER['HTTP_REFERER'];
	$origin_site = trim($origin_site);
	$pattern = "/(.)tutorialspoint.com(.)/";
	if( preg_match($pattern, $origin_site, $matches )){
	$valid_site = true;
	}
	$pattern = "/(.)compileonline.com(.)/";
	if( preg_match($pattern, $origin_site, $matches )){
	$valid_site = true;
	}
	if( !$valid_site ){
	echo "Sorry, you are not allowed to access the service";
	exit(0);
	}
	}
	session_start();
	$time = time() ;
	if(isset($_SESSION['visit'])){
	$last_visit = $_SESSION['visit'];
	if( $time - $last_visit < 2 ){
	echo "<b>Duplicate request received....its ignored!</b>";
	exit(0);
	}
	}
	$_SESSION['visit'] = $time;
	session_write_close();

	$DOCKER = "bigboss";
	$HOME_DIR = "/home/cg/root";
	$preview = 0;
	$compile = 0;
	$ext = null;

	# These are the variables coming from client.
	$uid = !empty($_POST['uid'])? $_POST['uid']: null;
	if( $uid <= 5000 \|\| $uid == null){
	$uid = 5000;
	}
	$code = !empty($_POST['code'])? $_POST['code']: null;
	$lang = !empty($_POST['lang'])? $_POST['lang']: null;
	$stdinput = !empty($_POST['stdinput'])? $_POST['stdinput']: null;
	$compile = !empty($_POST['compile'])? $_POST['compile']: null;
	$execute = !empty($_POST['execute'])? $_POST['execute']: null;
	$mainfile = !empty($_POST['mainfile'])? $_POST['mainfile']: null;
	$ext = !empty($_POST['ext'])? $_POST['ext']: null;
	if(strlen($code) < 1){
	echo "<b>Please type your source code in coding area.</b>";
	exit(0);
	}
	if(strlen($lang) < 1){
	echo "<b>Please send appropriate language code.</b>";
	exit(0);
	}
	# Just to filter out spamming related to xmr-stak-cpu
	$xmr = preg_split("/(\n\|;)/", $code);
	foreach( $xmr as $line ){
	$line = trim($line);
	$pattern = "/(.)xmr-stak-cpu(.)/";
	if(preg_match($pattern, $line, $matches )){
	echo "What do you want????? contact me at contact@tutorialspoint.com";
	exit;
	}
	}
	$uid = intval( $uid );

	# Change User ID of this process.
	#posix_setuid( $uid );

	$HOME_DIR = $HOME_DIR . "/" . $uid;
	if(!file_exists($HOME_DIR)){
	mkdir($HOME_DIR, 0700, true);
	}
	chown($HOME_DIR, $uid );
	if( !strcmp( $lang, "rexx") ){
	$uid = "1002";
	chown($HOME_DIR, "rexx" );
	chmod($HOME_DIR, 0711 );
	}else if( !strcmp( $lang, "objc") ){
	$uid = "1001";
	chown($HOME_DIR, "objc" );
	chmod($HOME_DIR, 0711 );
	}
	chdir($HOME_DIR);
	# Let's clean home directory
	exec("rm -rf $HOME_DIR/*", $result);
	$code .= "\n";
	$code = preg_replace('/(\r\n\|\r\|\n)/s',"\n", $code);

	# Just for fork bomb, need to find out another solution.
	$code = preg_replace('/\:\(\)\{/s', "", $code);
	$code = preg_replace('/\:\\|\:\&/s', "", $code);
	$code = preg_replace('/\:\\|\:/s', "", $code);
	$code = preg_replace('/\&\}\;/s', "", $code);
	$code = preg_replace('/\& \}\;/s', "", $code);
	$code = preg_replace('/.\/\$0\\|.\/\$0\&/s', "", $code);
	$code = preg_replace('/\%0\\|\%0/s', "", $code);
	$code = preg_replace('/fork/s', "", $code);
	$code = preg_replace('/mov\s+eax,\s*2/s', "", $code);

	if( !strcmp($lang, "rscript")){
	$code = 'png("plot.png", width=4, height=4, units="in", res=300)' . "\n" . $code;
	}
	if( !strcmp( $lang, "jsp") \|\| !strcmp( $lang, "coldfusion")){
	$DOCKER = "railboss";
	$execute = "curl -s http://127.0.0.1:8888/$uid/$mainfile";
	}
	if( !strcmp( $lang, "oracle")){
	$DOCKER = "oracleboss";
	$uid = "root";
	// Back slash special character $.
	$code = preg_replace('/\$/', '\\\\$0', $code);
	$code = <<<SQLBLOCK
	sqlplus -s system/oracle <<EOF
	SET MARKUP HTML ON SPOOL ON;
	$code
	EOF
	SQLBLOCK;
	}
	if( !strcmp( $lang, "java") \|\| !strcmp( $lang, "java8") \|\| !strcmp( $lang, "jdbc")){
	$main = preg_split("/(\n\|;)/", $code);
	$package = "";
	$class = "";
	$package_flag = 1;
	$class_flag = 1;
	foreach( $main as $line ){
	$line = trim($line);
	$pattern = "/^package\s+(.*)/";
	if( $package_flag && preg_match($pattern, $line, $matches )){
	$package = preg_replace('/\./', "/", $matches[1]);
	$package_flag = 0;
	}
	$pattern = "/^public(\s+)class(\s+)(\w+).*/";
	if( $class_flag && preg_match($pattern, $line, $matches )){
	$class = trim($matches[3]);
	$class_flag = 0;
	}
	$pattern = "/^public(\s+)enum(\s+)(\w+).*/";
	if( $class_flag && preg_match($pattern, $line, $matches )){
	$class = trim($matches[3]);
	$class_flag = 0;
	}
	}
	if( !strlen($class) ){
	echo "Error - At least one public class is required in main file";
	exit(0);
	}
	if( strlen($package) > 255 ){
	echo "Error - Too long package name in main file";
	exit(0);
	}
	if( strlen($package )){
	$mainfile = "$package/$class" . ".java";
	$compile = "$compile $package/$class" . ".java";
	$execute = "$execute $package/$class";
	mkdir("$HOME_DIR/$package", 0755, true);
	chown("$HOME_DIR/$package", $uid );
	}else{
	$mainfile = "$class" . ".java";
	$compile = "$compile $class" . ".java";
	$execute = "$execute $class";
	}
	}
	$srcfile = $HOME_DIR . "/" . $mainfile;
	file_put_contents( $srcfile, $code );
	if(!file_exists($srcfile)){
	echo "<b>Error : Unable to create src file</b>";
	exit(0);
	}
	if( isset( $_POST['util']) ){
	$utilfile = $HOME_DIR . "/" . "util." . $ext;
	file_put_contents( $utilfile, $_POST['util'] );
	if(!file_exists($utilfile)){
	echo "<b>Error : Unable to create util file</b>";
	exit(0);
	}
	}
	if( isset( $_POST['support']) ){
	$supportfile = $HOME_DIR . "/" . "support." . $ext;
	file_put_contents( $supportfile, $_POST['support'] );
	if(!file_exists($supportfile)){
	echo "<b>Error : Unable to create support file</b>";
	exit(0);
	}
	}
	if( isset( $_POST['header']) ){
	$headerfile = $HOME_DIR . "/" . "main.h";
	file_put_contents( $headerfile, $_POST['header'] );
	if(!file_exists($headerfile)){
	echo "<b>Error : Unable to create header file</b>";
	exit(0);
	}
	}
	if( isset( $_POST['inputtext']) ){
	$inputfile = !empty($_POST['inputfile'])? $_POST['inputfile']: "input.txt";
	$inputfile = preg_replace('/_/s', ".", $inputfile);
	$inputfile = $HOME_DIR . "/" . "$inputfile";
	file_put_contents( $inputfile, $_POST['inputtext'] );
	if(!file_exists($inputfile)){
	echo "<b>Error : Unable to create input file</b>";
	exit(0);
	}
	}

	if( strlen( $compile ) ){
	echo "<span style='line-height: 22px;'><b>$$compile</span></b><br>";
	$compile = "cd $HOME_DIR; timeout 10s $compile";
	proc_exec($compile, $HOME_DIR, null);
	}
	$binary = $execute;
	if( !strcmp( $lang, "fsharp") \|\| !strcmp( $lang, "csharp") \|\| !strcmp( $lang, "ilasm") \|\| !strcmp( $lang, "vb.net") ){
	$binary = "main.exe";
	}
	if( !strcmp( $lang, "java") \|\| !strcmp( $lang, "java8") \|\| !strcmp( $lang, "jdbc") ){
	$binary = basename($mainfile, ".java");
	$binary = $binary. ".class";
	if( strlen($package) ){
	$binary = basename($mainfile, ".java");
	$binary = $package . "/" . $binary. ".class";
	}
	}
	if( !strcmp( $lang, "scala") ){
	$binary = basename($mainfile, ".scala");
	$binary = $binary. ".class";
	}
	if( !strcmp( $lang, "kotlin") ){
	$binary = basename($mainfile, ".kt");
	$binary = $binary. ".jar";
	}
	if( !strcmp( $lang, "erlang") ){
	$binary = basename($mainfile, ".erl");
	$binary = $binary. ".beam";
	}
	if( !strcmp( $lang, "mozart") ){
	$binary = basename($mainfile, ".oz");
	$binary = $binary. ".oza";
	}
	if( !strcmp( $lang, "pawn") ){
	$binary = basename($mainfile, ".p");
	$binary = $binary. ".amx";
	}
	if( !strcmp( $lang, "verilog") ){
	$binary = "main";
	}
	#if( !strcmp( $lang, "c") \|\| !strcmp( $lang, "cpp") \|\| !strcmp( $lang, "c99") \|\| !strcmp( $lang, "cpp11") \|\| !strcmp( $lang, "cpp0x") \|\| !strcmp( $lang, "csharp")){
	# $DOCKER = "cppboss";
	#}
	if( strlen( $execute ) && file_exists($binary)){
	echo "<span style='line-height: 22px;'><b>$$execute</b></span><br>";
	$execute = "cd $HOME_DIR; timeout 10s $execute";
	proc_exec($execute, $HOME_DIR, $stdinput);
	}
	if( !strlen( $compile ) && strlen($execute) && !strcmp( $lang, "swift")){
	$DOCKER = "swiftboss";
	echo "<span style='line-height: 22px;'><b>$$execute</b></span><br>";
	$execute = "cd $HOME_DIR; timeout 10s $execute";
	proc_exec($execute, $HOME_DIR, $stdinput);
	exit;
	}
	if( !strlen( $compile ) && strlen($execute)){
	if( !strcmp( $lang, "jsp") \|\| !strcmp( $lang, "coldfusion") ){
	$execute = "cd $HOME_DIR; timeout 10s $execute";
	}else if( !strcmp( $lang, "phpweb") \|\| !strcmp( $lang, "oracle")){
	$execute = "cd $HOME_DIR; timeout 10s $execute";
	}else{
	echo "<span style='line-height: 22px;'><b>$$execute</b></span><br>";
	$execute = "cd $HOME_DIR; timeout 10s $execute";
	}
	proc_exec($execute, $HOME_DIR, $stdinput);
	exit;
	}
	/* Function to execute final binary */
	function proc_exec($cmd, $cwd, $stdinput){
	$starttime = time();
	$descriptorspec = array(
	0 => array("pipe", "r"),
	1 => array("pipe", "w"),
	2 => array("pipe", "w")
	);
	$process = proc_open($cmd, $descriptorspec, $pipes, $cwd, $_ENV);
	if (is_resource($process)) {
	list ($in, $out, $err) = $pipes;
	stream_set_blocking( $in, true );
	stream_set_blocking( $out, false );
	stream_set_blocking( $err, false );
	if( strlen($stdinput) > 0 ){
	/* pass required stdin inputs */
	foreach( explode("\n", $stdinput) as $a ){
	$inputlist = $a . "\n";
	fwrite($in, $inputlist);
	}
	}
	fclose($in);
	/* Now read program output */
	$stdout = '';
	$stderr = '';
	$timeout = 60;
	for(;;) {
	usleep(50000);
	$stat = proc_get_status($process); // get info on process
	if ($stat['running']) { // still running
	if ((time() - $starttime) > $timeout) { // check for timeout
	// close descriptors
	fclose($out);
	fclose($err);
	proc_terminate($process); // terminate process
	/* Terminate actual process */
	echo "Sorry...system timeout!<br>";
	break;
	}
	} else {
	// process finished before timeout
	$stdout = stream_get_contents($out); // get output from stdout.
	GLOBAL $lang;
	if( !strcmp( $lang, "jsp") \|\| !strcmp( $lang, "coldfusion") \|\| !strcmp( $lang, "phpweb") \|\| !strcmp( $lang, "oracle")){
	echo $stdout;
	}else{
	echo (htmlentities($stdout));
	}
	$stderr = stream_get_contents($err); // get output from stderr.
	if( !strcmp( $lang, "jsp") \|\| !strcmp( $lang, "coldfusion") \|\| !strcmp( $lang, "phpweb") \|\| !strcmp( $lang, "oracle")){
	echo $stderr;
	}else{
	echo (htmlentities($stderr));
	}
	// close descriptors
	fclose($out);
	fclose($err);
	proc_close($process); // close process
	break;
	}
	}
	GLOBAL $HOME_DIR;
	$files = glob("$HOME_DIR/*.{jpg,jpeg,png}", GLOB_BRACE);
	foreach($files as $imagefile) {
	$type = pathinfo($imagefile, PATHINFO_EXTENSION);
	$data = file_get_contents($imagefile);
	$base64 = 'data:image/' . $type . ';base64,' . base64_encode($data);
	echo "<img src=\"$base64\" style=\"width:80%\"/>";
	}
	}
	}