modified compile, execute

backend/compile.php

 <?php
 
 $postData = file_get_contents("php://input");
+$postData = json_decode($postData, true);
 
-$uid = $postData['id'];
+$uname = $postData['username'];
 $filename = $postData['filename'];
 $language = $postData['language'];
 
@@ -11,22 +12,22 @@ $ret_stat = 0;
 if(strcmp($language, "cpp") == 0)
 {
     $base = basename($filename, ".cpp");
-    system("g++ " . $uid . "/" . $filename . " -o " . $uid . "/" . $base , $ret_stat);
+    system("g++ ../users/" . $uname . "/" . $filename . " -o ../users/" . $uname . "/" . $base , $ret_stat);
 
     if($ret_stat != 0)
     {
-        unlink($uid . "/" . $base);
+        unlink("../users/" . $uname . "/" . $base);
     }
 }
 
 else if(strcmp($language, "java") == 0)
 {
     $base = basename($filename, ".java");
-    system("javac " . $uid . "/" . $filename , $ret_stat);
+    system("javac ../users/" . $uname . "/" . $filename , $ret_stat);
 
     if($ret_stat != 0)
     {
-        unlink($uid . "/" . $base . ".class");
+        unlink("../users/" . $uname . "/" . $base . ".class");
     }
 }
 

backend/execute.php

 <?php
 
 $postData = file_get_contents("php://input");
+$postData = json_decode($postData, true);
 
-$uid = $postData['id'];
+$uname = $postData['username'];
 $filename = $postData['filename'];
 $language = $postData['language'];
 $input_data = $postData['input_data'];
@@ -10,29 +11,29 @@ $input_data = $postData['input_data'];
 $ret_stat = 0;
 
 $template = strval(rand(1, 1000000));
-$in_fname = $uid . "/" . "temp_in" . $template;
+$in_fname = "../users/" . $uname . "/" . "temp_in" . $template;
 
 $file = fopen($in_fname, 'w');
 file_put_contents($in_fname, $input_data);
 fclose($file);
 
-$out_fname = $uid . "/" . "temp_out" . $template;
+$out_fname = "../users/" . $uname . "/" . "temp_out" . $template;
 
 if(strcmp($language, "cpp") == 0)
 {
     $base = basename($filename, ".cpp");
-    system("./" . $uid . "/" . $base . " < " . $in_fname . " > " . $out_fname, $ret_stat);
+    system("./../users/" . $uname . "/" . $base . " < " . $in_fname . " > " . $out_fname, $ret_stat);
 }
 
 else if(strcmp($language, "java") == 0)
 {
     $base = basename($filename, ".java");
-    system("java -cp " . $uid . "/ " . $base . " < " . $in_fname . " > " . $out_fname, $ret_stat);
+    system("java -cp ../users/" . $uname . "/ " . $base . " < " . $in_fname . " > " . $out_fname, $ret_stat);
 }
 
 else if(strcmp($language, "python") == 0)
 {
-    system("python3 " . $uid . "/" . $filename . " < " . $in_fname . " > " . $out_fname, $ret_stat);
+    system("python3 ../users/" . $uname . "/" . $filename . " < " . $in_fname . " > " . $out_fname, $ret_stat);
 }
 
 if($ret_stat != 0)