From d8b6379b9a4c4a4c40269da362e7349136528fcb Mon Sep 17 00:00:00 2001
From: Vrganj <luka.barbic0@gmail.com>
Date: Sat, 16 Jan 2021 13:14:17 +0100
Subject: [PATCH 01/16] Add CLI written in Node

---
 api/src/execute.js    |  48 -----------
 api/src/index.js      |  15 +++-
 api/src/languages.js  | 116 +------------------------
 cli/execute           |   3 +
 cli/package.json      |  12 +++
 cli/src/index.js      |  30 +++++++
 lxc/test_all_lxc      |  52 +++++------
 shared/execute.js     |  43 ++++++++++
 shared/languages.json | 194 ++++++++++++++++++++++++++++++++++++++++++
 9 files changed, 321 insertions(+), 192 deletions(-)
 delete mode 100644 api/src/execute.js
 create mode 100755 cli/execute
 create mode 100644 cli/package.json
 create mode 100644 cli/src/index.js
 create mode 100644 shared/execute.js
 create mode 100644 shared/languages.json

diff --git a/api/src/execute.js b/api/src/execute.js
deleted file mode 100644
index 1409a7b..0000000
--- a/api/src/execute.js
+++ /dev/null
@@ -1,48 +0,0 @@
-const { writeFile } = require('fs/promises');
-const { spawn } = require('child_process');
-
-async function execute(res, language, body) {
-    const stamp = new Date().getTime();
-    const sourceFile = `/tmp/${stamp}.code`;
-
-    await writeFile(sourceFile, body.source);
-
-    const process = spawn(__dirname + '/../../lxc/execute', [
-        language.name,
-        sourceFile,
-        body.args?.join('\n') ?? '',
-    ]);
-
-    const result = {
-        ran: true,
-        language: language.name,
-        stderr: '',
-        stdout: '',
-        output: '',
-    };
-
-    if (language.version)
-        result.version = language.version;
-
-    process.stderr.on('data', chunk => {
-        result.stderr += chunk;
-        result.output += chunk;
-    });
-
-    process.stdout.on('data', chunk => {
-        result.stdout += chunk;
-        result.output += chunk;
-    });
-
-    process.on('exit', () => {
-        result.stderr = result.stderr.trim().substring(0, 65535);
-        result.stdout = result.stdout.trim().substring(0, 65535);
-        result.output = result.output.trim().substring(0, 65535);
-
-        res.json(result);
-    });
-}
-
-module.exports = {
-    execute,
-};
diff --git a/api/src/index.js b/api/src/index.js
index c29a461..cd658c5 100644
--- a/api/src/index.js
+++ b/api/src/index.js
@@ -1,5 +1,5 @@
 const express = require('express');
-const { execute } = require('./execute');
+const { execute } = require('../../shared/execute');
 const { languages } = require('./languages');
 const { checkSchema, validationResult } = require('express-validator');
 
@@ -41,7 +41,7 @@ app.post(
             },
         }
     }),
-    (req, res) => {
+    async (req, res) => {
         const errors = validationResult(req).array();
 
         if (errors.length === 0) {
@@ -49,7 +49,16 @@ app.post(
                 language.aliases.includes(req.body.language.toLowerCase())
             );
 
-            execute(res, language, req.body);
+            const { stdout, stderr, output } = await execute(language, req.body.source, req.body.args);
+
+            res.status(200).json({
+                ran: true,
+                language: language.name,
+                version: language.version,
+                stdout,
+                stderr,
+                output,
+            });
         } else {
             res.status(400).json({
                 message: errors[0].msg,
diff --git a/api/src/languages.js b/api/src/languages.js
index 9fda547..23e352a 100644
--- a/api/src/languages.js
+++ b/api/src/languages.js
@@ -1,119 +1,5 @@
 const { spawn } = require('child_process');
-
-const languages = [
-    {
-        name: 'nasm',
-        aliases: ['asm', 'nasm'],
-    },
-    {
-        name: 'nasm64',
-        aliases: ['asm64', 'nasm64'],
-    },
-    {
-        name: 'awk',
-        aliases: ['awk'],
-    },
-    {
-        name: 'bash',
-        aliases: ['bash'],
-    },
-    {
-        name: 'brainfuck',
-        aliases: ['bf', 'brainfuck'],
-    },
-    {
-        name: 'c',
-        aliases: ['c'],
-    },
-    {
-        name: 'csharp',
-        aliases: ['c#', 'cs', 'csharp'],
-    },
-    {
-        name: 'cpp',
-        aliases: ['c++', 'cpp'],
-    },
-    {
-        name: 'deno',
-        aliases: ['deno', 'denojs', 'denots'],
-    },
-    {
-        name: 'ruby',
-        aliases: ['duby', 'rb', 'ruby'],
-    },
-    {
-        name: 'emacs',
-        aliases: ['el', 'elisp', 'emacs'],
-    },
-    {
-        name: 'elixir',
-        aliases: ['elixir'],
-    },
-    {
-        name: 'haskell',
-        aliases: ['haskell', 'hs'],
-    },
-    {
-        name: 'go',
-        aliases: ['go'],
-    },
-    {
-        name: 'java',
-        aliases: ['java'],
-    },
-    {
-        name: 'node',
-        aliases: ['javascript', 'js', 'node'],
-    },
-    {
-        name: 'jelly',
-        aliases: ['jelly'],
-    },
-    {
-        name: 'julia',
-        aliases: ['jl', 'julia'],
-    },
-    {
-        name: 'kotlin',
-        aliases: ['kotlin'],
-    },
-    {
-        name: 'lua',
-        aliases: ['lua'],
-    },
-    {
-        name: 'paradoc',
-        aliases: ['paradoc'],
-    },
-    {
-        name: 'perl',
-        aliases: ['perl'],
-    },
-    {
-        name: 'php',
-        aliases: ['php', 'php3', 'php4', 'php5'],
-    },
-    {
-        name: 'python3',
-        aliases: ['py', 'py3', 'python', 'python3'],
-    },
-    {
-        name: 'python2',
-        aliases: ['python2'],
-    },
-    {
-        name: 'rust',
-        aliases: ['rs', 'rust'],
-    },
-    {
-        name: 'swift',
-        aliases: ['swift'],
-    },
-    {
-        name: 'typescript',
-        aliases: ['ts', 'typescript'],
-    },
-];
+const languages = require('../../shared/languages.json');
 
 {
     const process = spawn(__dirname + '/../../lxc/versions');
diff --git a/cli/execute b/cli/execute
new file mode 100755
index 0000000..37a6b35
--- /dev/null
+++ b/cli/execute
@@ -0,0 +1,3 @@
+#!/usr/bin/env bash
+
+node src $*
diff --git a/cli/package.json b/cli/package.json
new file mode 100644
index 0000000..0166712
--- /dev/null
+++ b/cli/package.json
@@ -0,0 +1,12 @@
+{
+  "name": "cli",
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "keywords": [],
+  "author": "",
+  "license": "ISC"
+}
diff --git a/cli/src/index.js b/cli/src/index.js
new file mode 100644
index 0000000..c53d132
--- /dev/null
+++ b/cli/src/index.js
@@ -0,0 +1,30 @@
+const { execute } = require('../../shared/execute');
+const { readFileSync } = require('fs');
+const languages = require('../../shared/languages.json');
+
+const [languageName, sourceFile, ...args] = process.argv.slice(2);
+
+(async () => {
+    if (!languageName) {
+        console.error('Provide a language name');
+        return;
+    }
+    
+    if (!sourceFile) {
+        console.error('Provide a source file');
+        return;
+    }
+
+    const source = readFileSync(sourceFile);
+
+    const language = languages.find(language => language.name === languageName);
+
+    if (!language) {
+        console.error(`${languageName} is not supported by Piston`);
+        return;
+    }
+
+    const { output } = await execute(language, source, args);
+
+    console.log(output);
+})();
diff --git a/lxc/test_all_lxc b/lxc/test_all_lxc
index 873c840..493c4b5 100755
--- a/lxc/test_all_lxc
+++ b/lxc/test_all_lxc
@@ -2,54 +2,54 @@
 cd tests
 
 echo 'testing awk'
-../execute awk test.awk
+../../cli/execute awk test.awk
 echo 'testing c'
-../execute c test.c
+../../cli/execute c test.c
 echo 'testing cpp'
-../execute cpp test.cpp
+../../cli/execute cpp test.cpp
 echo 'testing cs'
-../execute cs test.cs
+../../cli/execute cs test.cs
 echo 'testing deno'
-../execute deno testdeno.ts
+../../cli/execute deno testdeno.ts
 echo 'testing elisp'
-../execute elisp test.el
+../../cli/execute elisp test.el
 echo 'testing elixir'
-../execute exs test.exs
+../../cli/execute exs test.exs
 echo 'testing go'
-../execute go test.go
+../../cli/execute go test.go
 echo 'testing haskell'
-../execute haskell test.hs
+../../cli/execute haskell test.hs
 echo 'testing java'
-../execute java test.java
+../../cli/execute java test.java
 echo 'testing jelly'
-../execute jelly test.jelly
+../../cli/execute jelly test.jelly
 echo 'testing jl'
-../execute jl test.jl
+../../cli/execute jl test.jl
 echo 'testing js'
-../execute js test.js
+../../cli/execute js test.js
 echo 'testing kotlin'
-../execute kotlin test.kt
+../../cli/execute kotlin test.kt
 echo 'testing asm 32 bit'
-../execute asm test.nasm
+../../cli/execute asm test.nasm
 echo 'testing asm 64 bit'
-../execute asm64 test64.nasm
+../../cli/execute asm64 test64.nasm
 echo 'testing php'
-../execute php test.php
+../../cli/execute php test.php
 echo 'testing perl'
-../execute perl test.pl
+../../cli/execute perl test.pl
 echo 'testing ruby'
-../execute ruby test.rb
+../../cli/execute ruby test.rb
 echo 'testing rust'
-../execute rust test.rs
+../../cli/execute rust test.rs
 echo 'testing bash'
-../execute bash test.sh
+../../cli/execute bash test.sh
 echo 'testing swift'
-../execute swift test.swift
+../../cli/execute swift test.swift
 echo 'testing typescript'
-../execute typescript test.ts
+../../cli/execute typescript test.ts
 echo 'testing python2'
-../execute python2 test2.py
+../../cli/execute python2 test2.py
 echo 'testing python3'
-../execute python3 test3.py
+../../cli/execute python3 test3.py
 echo 'testing paradoc'
-../execute python3 test_paradoc.py
+../../cli/execute python3 test_paradoc.py
diff --git a/shared/execute.js b/shared/execute.js
new file mode 100644
index 0000000..22c6dad
--- /dev/null
+++ b/shared/execute.js
@@ -0,0 +1,43 @@
+const { writeFile } = require('fs/promises');
+const { spawn } = require('child_process');
+
+function execute(language, source, args) {
+    return new Promise(async resolve => {
+        const stamp = new Date().getTime();
+        const sourceFile = `/tmp/${stamp}.code`;
+
+        await writeFile(sourceFile, source);
+
+        const process = spawn(__dirname + '/../lxc/execute', [
+            language.name,
+            sourceFile,
+            args?.join('\n') ?? '',
+        ]);
+
+        let stdout = '';
+        let stderr = '';
+        let output = '';
+
+        process.stderr.on('data', chunk => {
+            stderr += chunk;
+            output += chunk;
+        });
+
+        process.stdout.on('data', chunk => {
+            stdout += chunk;
+            output += chunk;
+        });
+        
+        process.on('exit', () => {
+            stderr = stderr.trim().substring(0, 65535);
+            stdout = stdout.trim().substring(0, 65535);
+            output = output.trim().substring(0, 65535);
+
+            resolve({ stdout, stderr, output });
+        });
+    });
+}
+
+module.exports = {
+    execute,
+};
diff --git a/shared/languages.json b/shared/languages.json
new file mode 100644
index 0000000..ba04153
--- /dev/null
+++ b/shared/languages.json
@@ -0,0 +1,194 @@
+[
+    {
+        "name": "nasm",
+        "aliases": [
+            "asm",
+            "nasm"
+        ]
+    },
+    {
+        "name": "nasm64",
+        "aliases": [
+            "asm64",
+            "nasm64"
+        ]
+    },
+    {
+        "name": "awk",
+        "aliases": [
+            "awk"
+        ]
+    },
+    {
+        "name": "bash",
+        "aliases": [
+            "bash"
+        ]
+    },
+    {
+        "name": "brainfuck",
+        "aliases": [
+            "bf",
+            "brainfuck"
+        ]
+    },
+    {
+        "name": "c",
+        "aliases": [
+            "c"
+        ]
+    },
+    {
+        "name": "csharp",
+        "aliases": [
+            "c#",
+            "cs",
+            "csharp"
+        ]
+    },
+    {
+        "name": "cpp",
+        "aliases": [
+            "c++",
+            "cpp"
+        ]
+    },
+    {
+        "name": "deno",
+        "aliases": [
+            "deno",
+            "denojs",
+            "denots"
+        ]
+    },
+    {
+        "name": "ruby",
+        "aliases": [
+            "duby",
+            "rb",
+            "ruby"
+        ]
+    },
+    {
+        "name": "emacs",
+        "aliases": [
+            "el",
+            "elisp",
+            "emacs"
+        ]
+    },
+    {
+        "name": "elixir",
+        "aliases": [
+            "elixir"
+        ]
+    },
+    {
+        "name": "haskell",
+        "aliases": [
+            "haskell",
+            "hs"
+        ]
+    },
+    {
+        "name": "go",
+        "aliases": [
+            "go"
+        ]
+    },
+    {
+        "name": "java",
+        "aliases": [
+            "java"
+        ]
+    },
+    {
+        "name": "node",
+        "aliases": [
+            "javascript",
+            "js",
+            "node"
+        ]
+    },
+    {
+        "name": "jelly",
+        "aliases": [
+            "jelly"
+        ]
+    },
+    {
+        "name": "julia",
+        "aliases": [
+            "jl",
+            "julia"
+        ]
+    },
+    {
+        "name": "kotlin",
+        "aliases": [
+            "kotlin"
+        ]
+    },
+    {
+        "name": "lua",
+        "aliases": [
+            "lua"
+        ]
+    },
+    {
+        "name": "paradoc",
+        "aliases": [
+            "paradoc"
+        ]
+    },
+    {
+        "name": "perl",
+        "aliases": [
+            "perl"
+        ]
+    },
+    {
+        "name": "php",
+        "aliases": [
+            "php",
+            "php3",
+            "php4",
+            "php5"
+        ]
+    },
+    {
+        "name": "python3",
+        "aliases": [
+            "py",
+            "py3",
+            "python",
+            "python3"
+        ]
+    },
+    {
+        "name": "python2",
+        "aliases": [
+            "python2"
+        ]
+    },
+    {
+        "name": "rust",
+        "aliases": [
+            "rs",
+            "rust"
+        ]
+    },
+    {
+        "name": "swift",
+        "aliases": [
+            "swift"
+        ]
+    },
+    {
+        "name": "typescript",
+        "aliases": [
+            "ts",
+            "typescript"
+        ]
+    }
+]

From f78aa34c10875e1091b5fecebb224e4297991507 Mon Sep 17 00:00:00 2001
From: Vrganj <luka.barbic0@gmail.com>
Date: Sat, 16 Jan 2021 13:14:46 +0100
Subject: [PATCH 02/16] Read file as string in CLI

---
 cli/src/index.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/cli/src/index.js b/cli/src/index.js
index c53d132..02fdd56 100644
--- a/cli/src/index.js
+++ b/cli/src/index.js
@@ -15,7 +15,7 @@ const [languageName, sourceFile, ...args] = process.argv.slice(2);
         return;
     }
 
-    const source = readFileSync(sourceFile);
+    const source = readFileSync(sourceFile).toString();
 
     const language = languages.find(language => language.name === languageName);
 

From f685bdc7516fc9810e4848ecd799c80e17233c2a Mon Sep 17 00:00:00 2001
From: Vrganj <luka.barbic0@gmail.com>
Date: Sat, 16 Jan 2021 13:27:14 +0100
Subject: [PATCH 03/16] Fix aliases, update readme

---
 cli/execute      | 33 +++++++++++++++++++++++++++++++--
 cli/package.json | 12 ------------
 cli/src/index.js | 30 ------------------------------
 readme.md        |  8 +++++---
 4 files changed, 36 insertions(+), 47 deletions(-)
 delete mode 100644 cli/package.json
 delete mode 100644 cli/src/index.js

diff --git a/cli/execute b/cli/execute
index 37a6b35..a62d120 100755
--- a/cli/execute
+++ b/cli/execute
@@ -1,3 +1,32 @@
-#!/usr/bin/env bash
+#!/usr/bin/env node
 
-node src $*
+const { execute } = require('../shared/execute');
+const { readFileSync } = require('fs');
+const languages = require('../shared/languages.json');
+
+const [languageName, sourceFile, ...args] = process.argv.slice(2);
+
+(async () => {
+    if (!languageName) {
+        console.error('Provide a language name');
+        return;
+    }
+    
+    if (!sourceFile) {
+        console.error('Provide a source file');
+        return;
+    }
+
+    const source = readFileSync(sourceFile).toString();
+
+    const language = languages.find(language => language.aliases.includes(languageName.toLowerCase()));
+
+    if (!language) {
+        console.error(`${languageName} is not supported by Piston`);
+        return;
+    }
+
+    const { output } = await execute(language, source, args);
+
+    console.log(output);
+})();
diff --git a/cli/package.json b/cli/package.json
deleted file mode 100644
index 0166712..0000000
--- a/cli/package.json
+++ /dev/null
@@ -1,12 +0,0 @@
-{
-  "name": "cli",
-  "version": "1.0.0",
-  "description": "",
-  "main": "index.js",
-  "scripts": {
-    "test": "echo \"Error: no test specified\" && exit 1"
-  },
-  "keywords": [],
-  "author": "",
-  "license": "ISC"
-}
diff --git a/cli/src/index.js b/cli/src/index.js
deleted file mode 100644
index 02fdd56..0000000
--- a/cli/src/index.js
+++ /dev/null
@@ -1,30 +0,0 @@
-const { execute } = require('../../shared/execute');
-const { readFileSync } = require('fs');
-const languages = require('../../shared/languages.json');
-
-const [languageName, sourceFile, ...args] = process.argv.slice(2);
-
-(async () => {
-    if (!languageName) {
-        console.error('Provide a language name');
-        return;
-    }
-    
-    if (!sourceFile) {
-        console.error('Provide a source file');
-        return;
-    }
-
-    const source = readFileSync(sourceFile).toString();
-
-    const language = languages.find(language => language.name === languageName);
-
-    if (!language) {
-        console.error(`${languageName} is not supported by Piston`);
-        return;
-    }
-
-    const { output } = await execute(language, source, args);
-
-    console.log(output);
-})();
diff --git a/readme.md b/readme.md
index 5b2cb85..05f8d93 100644
--- a/readme.md
+++ b/readme.md
@@ -47,7 +47,7 @@ See `var/install.txt` for how to create a new LXC container and install all of t
 software.
 
 #### CLI Usage
-- `lxc/execute [language] [file path] [args]`
+- `cli/execute [language] [file path] [args]`
 
 #### API Usage
 To use the API, it must first be started. Please note that if root is required to access
@@ -79,14 +79,17 @@ Content-Type: application/json
 [
     {
         "name": "awk",
+        "aliases": ["awk"],
         "version": "1.3.3"
     },
     {
         "name": "bash",
+        "aliases": ["bash"],
         "version": "4.4.20"
     },
     {
         "name": "c",
+        "aliases": ["c"],
         "version": "7.5.0"
     }
 ]
@@ -130,8 +133,7 @@ HTTP/1.1 400 Bad Request
 Content-Type: application/json
 
 {
-    "code": "unsupported_language",
-    "message": "whatever is not supported by Piston"
+    "message": "Provided language is not supported by Piston"
 }
 ```
 

From 8fd831982eb3589333203fe3dffc5357528193f2 Mon Sep 17 00:00:00 2001
From: Vrganj <luka.barbic0@gmail.com>
Date: Sat, 16 Jan 2021 14:19:29 +0100
Subject: [PATCH 04/16] Make ran field do something

---
 api/src/index.js  | 4 ++--
 shared/execute.js | 9 +++++++--
 2 files changed, 9 insertions(+), 4 deletions(-)

diff --git a/api/src/index.js b/api/src/index.js
index cd658c5..ba234fe 100644
--- a/api/src/index.js
+++ b/api/src/index.js
@@ -49,10 +49,10 @@ app.post(
                 language.aliases.includes(req.body.language.toLowerCase())
             );
 
-            const { stdout, stderr, output } = await execute(language, req.body.source, req.body.args);
+            const { stdout, stderr, output, ran } = await execute(language, req.body.source, req.body.args);
 
             res.status(200).json({
-                ran: true,
+                ran,
                 language: language.name,
                 version: language.version,
                 stdout,
diff --git a/shared/execute.js b/shared/execute.js
index 22c6dad..ed612bf 100644
--- a/shared/execute.js
+++ b/shared/execute.js
@@ -28,12 +28,17 @@ function execute(language, source, args) {
             output += chunk;
         });
         
-        process.on('exit', () => {
+        process.on('exit', code => {
             stderr = stderr.trim().substring(0, 65535);
             stdout = stdout.trim().substring(0, 65535);
             output = output.trim().substring(0, 65535);
 
-            resolve({ stdout, stderr, output });
+            resolve({
+                stdout,
+                stderr,
+                output,
+                ran: code === 0,
+            });
         });
     });
 }

From c537cab2da435ed31e080c198b82d745d7068efd Mon Sep 17 00:00:00 2001
From: Vrganj <luka.barbic0@gmail.com>
Date: Sat, 16 Jan 2021 18:41:41 +0100
Subject: [PATCH 05/16] Add stdin

---
 api/src/index.js         | 9 ++++++++-
 cli/execute              | 2 +-
 lxc/execute              | 4 +++-
 lxc/executors/bash       | 2 +-
 lxc/executors/brainfuck  | 2 +-
 lxc/executors/c          | 2 +-
 lxc/executors/cpp        | 2 +-
 lxc/executors/csharp     | 2 +-
 lxc/executors/deno       | 4 ++--
 lxc/executors/elixir     | 2 +-
 lxc/executors/emacs      | 2 +-
 lxc/executors/go         | 2 +-
 lxc/executors/haskell    | 2 +-
 lxc/executors/java       | 2 +-
 lxc/executors/jelly      | 2 +-
 lxc/executors/julia      | 2 +-
 lxc/executors/kotlin     | 2 +-
 lxc/executors/lua        | 2 +-
 lxc/executors/nasm       | 2 +-
 lxc/executors/nasm64     | 2 +-
 lxc/executors/node       | 4 ++--
 lxc/executors/perl       | 2 +-
 lxc/executors/php        | 2 +-
 lxc/executors/python2    | 2 +-
 lxc/executors/python3    | 2 +-
 lxc/executors/ruby       | 2 +-
 lxc/executors/rust       | 2 +-
 lxc/executors/swift      | 2 +-
 lxc/executors/typescript | 2 +-
 shared/execute.js        | 3 ++-
 30 files changed, 42 insertions(+), 32 deletions(-)

diff --git a/api/src/index.js b/api/src/index.js
index ba234fe..70878ea 100644
--- a/api/src/index.js
+++ b/api/src/index.js
@@ -39,6 +39,13 @@ app.post(
             isArray: {
                 errorMessage: 'Supplied args is not an array',
             },
+        },
+        stdin: {
+            in: 'body',
+            optional: true,
+            isString: {
+                errorMessage: 'Supplied stdin is not a string',
+            },
         }
     }),
     async (req, res) => {
@@ -49,7 +56,7 @@ app.post(
                 language.aliases.includes(req.body.language.toLowerCase())
             );
 
-            const { stdout, stderr, output, ran } = await execute(language, req.body.source, req.body.args);
+            const { stdout, stderr, output, ran } = await execute(language, req.body.source, req.body.args, req.body.stdin);
 
             res.status(200).json({
                 ran,
diff --git a/cli/execute b/cli/execute
index a62d120..a8dc72c 100755
--- a/cli/execute
+++ b/cli/execute
@@ -26,7 +26,7 @@ const [languageName, sourceFile, ...args] = process.argv.slice(2);
         return;
     }
 
-    const { output } = await execute(language, source, args);
+    const { output } = await execute(language, source, '', args);
 
     console.log(output);
 })();
diff --git a/lxc/execute b/lxc/execute
index 42d5b52..14db573 100755
--- a/lxc/execute
+++ b/lxc/execute
@@ -14,13 +14,15 @@ epoch=$(date +%s%N)
 basepath="/var/lib/lxc/piston/rootfs"
 filepath="/tmp/$epoch/code.code"
 argpath="/tmp/$epoch/args.args"
+stdinpath="/tmp/$epoch/stdin.stdin"
 arg=$(basename $argpath)
 
 # write arg file
 mkdir -p $basepath/tmp/$epoch
 chmod 777 $basepath/tmp/$epoch
 cat $2 > $basepath$filepath
-echo "${@:3}" > $basepath$argpath
+cat $3 > $basepath$argpath
+echo "${@:4}" > $basepath$argpath
 
 # process incrementor
 exec 200>$dir/lockfile
diff --git a/lxc/executors/bash b/lxc/executors/bash
index c13ad07..410e383 100755
--- a/lxc/executors/bash
+++ b/lxc/executors/bash
@@ -1,2 +1,2 @@
 cd /tmp/$2
-runuser runner$1 -c "cd /tmp/$2 ; cat args.args | xargs -d '\n' timeout -s KILL 3 bash code.code"
+runuser runner$1 -c "cd /tmp/$2 ; cat args.args | xargs -d '\n' timeout -s KILL 3 bash code.code < stdin.stdin"
diff --git a/lxc/executors/brainfuck b/lxc/executors/brainfuck
index b4458a0..94fc7d9 100755
--- a/lxc/executors/brainfuck
+++ b/lxc/executors/brainfuck
@@ -1,2 +1,2 @@
 cd /tmp/$2
-runuser runner$1 -c "cd /tmp/$2 ; cat args.args | xargs -d '\n' timeout -s KILL 3 brainfuck code.code"
+runuser runner$1 -c "cd /tmp/$2 ; cat args.args | xargs -d '\n' timeout -s KILL 3 brainfuck code.code < stdin.stdin"
diff --git a/lxc/executors/c b/lxc/executors/c
index 3130257..79ba5b0 100755
--- a/lxc/executors/c
+++ b/lxc/executors/c
@@ -1,4 +1,4 @@
 runuser runner$1 -c "\
     cd /tmp/$2 ; \
     gcc -std=c11 -o binary -x c code.code ; \
-    cat args.args | xargs -d '\n' timeout -s KILL 3 ./binary"
+    cat args.args | xargs -d '\n' timeout -s KILL 3 ./binary < stdin.stdin"
diff --git a/lxc/executors/cpp b/lxc/executors/cpp
index 4b8c6cf..cfb02dd 100755
--- a/lxc/executors/cpp
+++ b/lxc/executors/cpp
@@ -1,4 +1,4 @@
 runuser runner$1 -c "\
     cd /tmp/$2 ; \
     g++ -std=c++17 -o binary -x c++ code.code ; \
-    cat args.args | xargs -d '\n' timeout -s KILL 3 ./binary"
+    cat args.args | xargs -d '\n' timeout -s KILL 3 ./binary < stdin.stdin"
diff --git a/lxc/executors/csharp b/lxc/executors/csharp
index 2c742c7..f2ee2ea 100755
--- a/lxc/executors/csharp
+++ b/lxc/executors/csharp
@@ -1,4 +1,4 @@
 runuser runner$1 -c "\
     cd /tmp/$2 ; \
     mcs $(echo code.code | sed 's/\///') -nowarn:0219 -out:binary ; \
-    cat args.args | xargs -d '\n' timeout -s KILL 3 mono binary"
+    cat args.args | xargs -d '\n' timeout -s KILL 3 mono binary < stdin.stdin"
diff --git a/lxc/executors/deno b/lxc/executors/deno
index b466288..1a92dc8 100755
--- a/lxc/executors/deno
+++ b/lxc/executors/deno
@@ -1,7 +1,7 @@
 cd /tmp/$2
 
 if [[ -z $(grep '[^[:space:]]' args.args) ]]; then
-    runuser runner$1 -c "cd /tmp/$2 ; timeout -s KILL 3 deno run code.code"
+    runuser runner$1 -c "cd /tmp/$2 ; timeout -s KILL 3 deno run code.code < stdin.stdin"
 else
-    runuser runner$1 -c "cd /tmp/$2 ; cat args.args | xargs -d '\n' timeout -s KILL 3 deno run code.code"
+    runuser runner$1 -c "cd /tmp/$2 ; cat args.args | xargs -d '\n' timeout -s KILL 3 deno run code.code < stdin.stdin"
 fi
diff --git a/lxc/executors/elixir b/lxc/executors/elixir
index 49f9679..664501f 100755
--- a/lxc/executors/elixir
+++ b/lxc/executors/elixir
@@ -3,5 +3,5 @@ cd /tmp/$2
 if [[ -z $(grep '[^[:space:]]' args.args) ]]; then
     runuser runner$1 -c "cd /tmp/$2 ; timeout -s KILL 3 elixir code.code"
 else
-    runuser runner$1 -c "cd /tmp/$2 ; cat args.args ; xargs -d '\n' timeout -s KILL 3 elixir code.code"
+    runuser runner$1 -c "cd /tmp/$2 ; cat args.args ; xargs -d '\n' timeout -s KILL 3 elixir code.code < stdin.stdin"
 fi
diff --git a/lxc/executors/emacs b/lxc/executors/emacs
index 31f6186..6fb0553 100755
--- a/lxc/executors/emacs
+++ b/lxc/executors/emacs
@@ -3,5 +3,5 @@ cd /tmp/$2
 if [[ -z $(grep '[^[:space:]]' args.args) ]]; then
     runuser runner$1 -c "cd /tmp/$2 ; timeout -s KILL 3 emacs -Q --script code.code"
 else
-    runuser runner$1 -c "cd /tmp/$2 ; cat args.args | xargs -d '\n' timeout -s KILL 3 emacs -Q --script code.code"
+    runuser runner$1 -c "cd /tmp/$2 ; cat args.args | xargs -d '\n' timeout -s KILL 3 emacs -Q --script code.code < stdin.stdin"
 fi
diff --git a/lxc/executors/go b/lxc/executors/go
index 063af21..b713027 100755
--- a/lxc/executors/go
+++ b/lxc/executors/go
@@ -3,4 +3,4 @@ cp code.code interim.go
 file="interim.go"
 go build $file
 file=${file%%.*}
-runuser runner$1 -c "cd /tmp/$2 ; cat args.args | xargs -d '\n' timeout -s KILL 3 ./$file"
+runuser runner$1 -c "cd /tmp/$2 ; cat args.args | xargs -d '\n' timeout -s KILL 3 ./$file < stdin.stdin"
diff --git a/lxc/executors/haskell b/lxc/executors/haskell
index 7593b60..becc27f 100755
--- a/lxc/executors/haskell
+++ b/lxc/executors/haskell
@@ -4,4 +4,4 @@ mv code.code code.hs
 runuser runner$1 -c "\
     cd /tmp/$2 ; \
     ghc -dynamic -o binary code.hs > /dev/null 2>&1 ; \
-    cat args.args | xargs -d '\n' timeout -s KILL 3 ./binary"
+    cat args.args | xargs -d '\n' timeout -s KILL 3 ./binary < stdin.stdin"
diff --git a/lxc/executors/java b/lxc/executors/java
index 6fc09e0..7f84d81 100755
--- a/lxc/executors/java
+++ b/lxc/executors/java
@@ -6,4 +6,4 @@ mv interim.java $name.java
 runuser runner$1 -c "\
     cd /tmp/$2 ; \
     javac $name.java ; \
-    cat args.args | xargs -d '\n' timeout -s KILL 3 java $name"
+    cat args.args | xargs -d '\n' timeout -s KILL 3 java $name < stdin.stdin"
diff --git a/lxc/executors/jelly b/lxc/executors/jelly
index 4107b6b..32b79d9 100755
--- a/lxc/executors/jelly
+++ b/lxc/executors/jelly
@@ -1,2 +1,2 @@
 cd /tmp/$2
-runuser runner$1 -c "cd /tmp/$2 ; cat args.args | xargs -d '\n' timeout -s KILL 3 jelly fu code.code"
+runuser runner$1 -c "cd /tmp/$2 ; cat args.args | xargs -d '\n' timeout -s KILL 3 jelly fu code.code < stdin.stdin"
diff --git a/lxc/executors/julia b/lxc/executors/julia
index 7dddb24..3eeb323 100755
--- a/lxc/executors/julia
+++ b/lxc/executors/julia
@@ -1,2 +1,2 @@
 cd /tmp/$2
-runuser runner$1 -c "cd /tmp/$2 ; cat args.args | xargs -d '\n' timeout -s KILL 3 julia code.code"
+runuser runner$1 -c "cd /tmp/$2 ; cat args.args | xargs -d '\n' timeout -s KILL 3 julia code.code < stdin.stdin"
diff --git a/lxc/executors/kotlin b/lxc/executors/kotlin
index 5d5070a..6c034e6 100755
--- a/lxc/executors/kotlin
+++ b/lxc/executors/kotlin
@@ -3,4 +3,4 @@ cp code.code code.kt
 runuser runner$1 -c "\
     cd /tmp/$2 ; \
     kotlinc code.kt -include-runtime -d code.jar ; \
-    cat args.args | xargs -d '\n' timeout -s KILL 3 java -jar code.jar"
+    cat args.args | xargs -d '\n' timeout -s KILL 3 java -jar code.jar < stdin.stdin"
diff --git a/lxc/executors/lua b/lxc/executors/lua
index b412013..a5ab76f 100755
--- a/lxc/executors/lua
+++ b/lxc/executors/lua
@@ -1,2 +1,2 @@
 cd /tmp/$2
-runuser runner$1 -c "cd /tmp/$2 ; cat args.args | xargs -d '\n' timeout -s KILL 3 lua code.code"
+runuser runner$1 -c "cd /tmp/$2 ; cat args.args | xargs -d '\n' timeout -s KILL 3 lua code.code < stdin.stdin"
diff --git a/lxc/executors/nasm b/lxc/executors/nasm
index 22026af..45e1d1c 100755
--- a/lxc/executors/nasm
+++ b/lxc/executors/nasm
@@ -2,4 +2,4 @@ runuser runner$1 -c "\
     cd /tmp/$2 ; \
     nasm -f elf32 -o binary.o code.code ; \
     ld -m elf_i386 binary.o -o binary ; \
-    cat args.args | xargs -d '\n' timeout -s KILL 3 ./binary"
+    cat args.args | xargs -d '\n' timeout -s KILL 3 ./binary < stdin.stdin"
diff --git a/lxc/executors/nasm64 b/lxc/executors/nasm64
index a6dc197..d498a54 100755
--- a/lxc/executors/nasm64
+++ b/lxc/executors/nasm64
@@ -2,4 +2,4 @@ runuser runner$1 -c "\
     cd /tmp/$2 ; \
     nasm -f elf64 -o binary.o code.code ; \
     ld -m elf_x86_64 binary.o -o binary ; \
-    cat args.args | xargs -d '\n' timeout -s KILL 3 ./binary"
+    cat args.args | xargs -d '\n' timeout -s KILL 3 ./binary < stdin.stdin"
diff --git a/lxc/executors/node b/lxc/executors/node
index 5fd7d26..04113d2 100755
--- a/lxc/executors/node
+++ b/lxc/executors/node
@@ -1,7 +1,7 @@
 cd /tmp/$2
 
 if [[ -z $(grep '[^[:space:]]' args.args) ]]; then
-    runuser runner$1 -c "cd /tmp/$2 ; timeout -s KILL 3 node code.code"
+    runuser runner$1 -c "cd /tmp/$2 ; timeout -s KILL 3 node code.code < stdin.stdin"
 else
-    runuser runner$1 -c "cd /tmp/$2 ; cat args.args | xargs -d '\n' timeout -s KILL 3 node code.code"
+    runuser runner$1 -c "cd /tmp/$2 ; cat args.args | xargs -d '\n' timeout -s KILL 3 node code.code < stdin.stdin"
 fi
diff --git a/lxc/executors/perl b/lxc/executors/perl
index afb8ad5..9951e18 100755
--- a/lxc/executors/perl
+++ b/lxc/executors/perl
@@ -1,2 +1,2 @@
 cd /tmp/$2
-runuser runner$1 -c "cd /tmp/$2 ; cat args.args | xargs -d '\n' timeout -s KILL 3 perl code.code"
+runuser runner$1 -c "cd /tmp/$2 ; cat args.args | xargs -d '\n' timeout -s KILL 3 perl code.code < stdin.stdin"
diff --git a/lxc/executors/php b/lxc/executors/php
index d88a8d2..470f494 100755
--- a/lxc/executors/php
+++ b/lxc/executors/php
@@ -1,2 +1,2 @@
 cd /tmp/$2
-runuser runner$1 -c "cd /tmp/$2 ; cat args.args | xargs -d '\n' timeout -s KILL 3 php code.code"
+runuser runner$1 -c "cd /tmp/$2 ; cat args.args | xargs -d '\n' timeout -s KILL 3 php code.code < stdin.stdin"
diff --git a/lxc/executors/python2 b/lxc/executors/python2
index d172f18..15b65de 100755
--- a/lxc/executors/python2
+++ b/lxc/executors/python2
@@ -1,2 +1,2 @@
 cd /tmp/$2
-runuser runner$1 -c "cd /tmp/$2 ; cat args.args | xargs -d '\n' timeout -s KILL 3 python code.code"
+runuser runner$1 -c "cd /tmp/$2 ; cat args.args | xargs -d '\n' timeout -s KILL 3 python code.code < stdin.stdin"
diff --git a/lxc/executors/python3 b/lxc/executors/python3
index 0749d88..a2bc47f 100755
--- a/lxc/executors/python3
+++ b/lxc/executors/python3
@@ -1,2 +1,2 @@
 cd /tmp/$2
-runuser runner$1 -c "cd /tmp/$2 ; cat args.args | xargs -d '\n' timeout -s KILL 3 python3.8 code.code"
+runuser runner$1 -c "cd /tmp/$2 ; cat args.args | xargs -d '\n' timeout -s KILL 3 python3.8 code.code < stdin.stdin"
diff --git a/lxc/executors/ruby b/lxc/executors/ruby
index 9de7477..5c5b181 100755
--- a/lxc/executors/ruby
+++ b/lxc/executors/ruby
@@ -1,2 +1,2 @@
 cd /tmp/$2
-runuser runner$1 -c "cd /tmp/$2 ; cat args.args | xargs -d '\n' timeout -s KILL 3 ruby code.code"
+runuser runner$1 -c "cd /tmp/$2 ; cat args.args | xargs -d '\n' timeout -s KILL 3 ruby code.code < stdin.stdin"
diff --git a/lxc/executors/rust b/lxc/executors/rust
index c939259..ad7d8e2 100755
--- a/lxc/executors/rust
+++ b/lxc/executors/rust
@@ -2,4 +2,4 @@ cd /tmp/$2
 rustc -o binary code.code
 runuser runner$1 -c "\
     cd /tmp/$2 ; \
-    cat args.args | xargs -d '\n' timeout -s KILL 3 ./binary"
+    cat args.args | xargs -d '\n' timeout -s KILL 3 ./binary < stdin.stdin"
diff --git a/lxc/executors/swift b/lxc/executors/swift
index 4b5d8a1..fd8eb9f 100755
--- a/lxc/executors/swift
+++ b/lxc/executors/swift
@@ -1,2 +1,2 @@
 cd /tmp/$2
-runuser runner$1 -c "cd /tmp/$2 ; cat args.args | xargs -d '\n' timeout -s KILL 3 swift code.code"
+runuser runner$1 -c "cd /tmp/$2 ; cat args.args | xargs -d '\n' timeout -s KILL 3 swift code.code < stdin.stdin"
diff --git a/lxc/executors/typescript b/lxc/executors/typescript
index 863d8d0..26adfba 100755
--- a/lxc/executors/typescript
+++ b/lxc/executors/typescript
@@ -4,4 +4,4 @@ runuser runner$1 -c "\
     tsc interim.ts ; \
     rm -f interim.ts ; \
     mv interim.js code.code ; \
-    cat args.args | xargs -d '\n' timeout -s KILL 3 node code.code"
+    cat args.args | xargs -d '\n' timeout -s KILL 3 node code.code < stdin.stdin"
diff --git a/shared/execute.js b/shared/execute.js
index ed612bf..fbfd5de 100644
--- a/shared/execute.js
+++ b/shared/execute.js
@@ -1,7 +1,7 @@
 const { writeFile } = require('fs/promises');
 const { spawn } = require('child_process');
 
-function execute(language, source, args) {
+function execute(language, source, args, stdin) {
     return new Promise(async resolve => {
         const stamp = new Date().getTime();
         const sourceFile = `/tmp/${stamp}.code`;
@@ -11,6 +11,7 @@ function execute(language, source, args) {
         const process = spawn(__dirname + '/../lxc/execute', [
             language.name,
             sourceFile,
+            stdin ?? '',
             args?.join('\n') ?? '',
         ]);
 

From ea547167748a1ec99fe98fa83ab053844db7f831 Mon Sep 17 00:00:00 2001
From: Vrganj <luka.barbic0@gmail.com>
Date: Sat, 16 Jan 2021 18:52:18 +0100
Subject: [PATCH 06/16] Fix order of args and stdin

---
 api/src/index.js  | 2 +-
 shared/execute.js | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/api/src/index.js b/api/src/index.js
index 70878ea..d628ba1 100644
--- a/api/src/index.js
+++ b/api/src/index.js
@@ -56,7 +56,7 @@ app.post(
                 language.aliases.includes(req.body.language.toLowerCase())
             );
 
-            const { stdout, stderr, output, ran } = await execute(language, req.body.source, req.body.args, req.body.stdin);
+            const { stdout, stderr, output, ran } = await execute(language, req.body.source, req.body.stdin, req.body.args);
 
             res.status(200).json({
                 ran,
diff --git a/shared/execute.js b/shared/execute.js
index fbfd5de..4124928 100644
--- a/shared/execute.js
+++ b/shared/execute.js
@@ -1,7 +1,7 @@
 const { writeFile } = require('fs/promises');
 const { spawn } = require('child_process');
 
-function execute(language, source, args, stdin) {
+function execute(language, source, stdin, args) {
     return new Promise(async resolve => {
         const stamp = new Date().getTime();
         const sourceFile = `/tmp/${stamp}.code`;

From b7ba08ccdfb8570de10bd8b4e1d668815e7e25c8 Mon Sep 17 00:00:00 2001
From: Vrganj <luka.barbic0@gmail.com>
Date: Sat, 16 Jan 2021 20:02:36 +0100
Subject: [PATCH 07/16] Fix stdin

---
 lxc/execute | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lxc/execute b/lxc/execute
index 14db573..3438547 100755
--- a/lxc/execute
+++ b/lxc/execute
@@ -21,7 +21,7 @@ arg=$(basename $argpath)
 mkdir -p $basepath/tmp/$epoch
 chmod 777 $basepath/tmp/$epoch
 cat $2 > $basepath$filepath
-cat $3 > $basepath$argpath
+echo $3 > $basepath$stdinpath
 echo "${@:4}" > $basepath$argpath
 
 # process incrementor

From 008d55643b31b2cf516495ba87babd901e290e89 Mon Sep 17 00:00:00 2001
From: Vrganj <luka.barbic0@gmail.com>
Date: Sun, 17 Jan 2021 00:54:57 +0000
Subject: [PATCH 08/16] Fix stdin for most languages

---
 lxc/executors/bash       |  8 ++++++--
 lxc/executors/brainfuck  |  8 ++++++--
 lxc/executors/c          | 11 +++++++----
 lxc/executors/cpp        | 11 +++++++----
 lxc/executors/csharp     | 11 +++++++----
 lxc/executors/deno       | 11 +++++------
 lxc/executors/elixir     | 11 +++++------
 lxc/executors/emacs      | 11 +++++------
 lxc/executors/go         | 14 ++++++++------
 lxc/executors/haskell    | 11 ++++++-----
 lxc/executors/java       | 18 ++++++++++--------
 lxc/executors/jelly      |  8 ++++++--
 lxc/executors/julia      |  8 ++++++--
 lxc/executors/kotlin     | 14 ++++++++------
 lxc/executors/lua        |  8 ++++++--
 lxc/executors/nasm       | 13 ++++++++-----
 lxc/executors/nasm64     | 13 ++++++++-----
 lxc/executors/node       | 11 +++++------
 lxc/executors/perl       |  8 ++++++--
 lxc/executors/php        |  8 ++++++--
 lxc/executors/python2    |  8 ++++++--
 lxc/executors/python3    |  8 ++++++--
 lxc/executors/ruby       |  8 ++++++--
 lxc/executors/rust       | 10 +++++++---
 lxc/executors/swift      |  8 ++++++--
 lxc/executors/typescript | 17 ++++++++++-------
 26 files changed, 172 insertions(+), 103 deletions(-)

diff --git a/lxc/executors/bash b/lxc/executors/bash
index 410e383..04ebb1c 100755
--- a/lxc/executors/bash
+++ b/lxc/executors/bash
@@ -1,2 +1,6 @@
-cd /tmp/$2
-runuser runner$1 -c "cd /tmp/$2 ; cat args.args | xargs -d '\n' timeout -s KILL 3 bash code.code < stdin.stdin"
+#!/bin/bash
+
+runuser runner$1 -c "
+    cd /tmp/$2
+    xargs -a args.args -d '\n' timeout -s KILL 3 bash code.code < stdin.stdin
+"
diff --git a/lxc/executors/brainfuck b/lxc/executors/brainfuck
index 94fc7d9..0503bcf 100755
--- a/lxc/executors/brainfuck
+++ b/lxc/executors/brainfuck
@@ -1,2 +1,6 @@
-cd /tmp/$2
-runuser runner$1 -c "cd /tmp/$2 ; cat args.args | xargs -d '\n' timeout -s KILL 3 brainfuck code.code < stdin.stdin"
+#!/bin/bash
+
+runuser runner$1 -c "
+    cd /tmp/$2
+    timeout -s KILL 3 xargs -a args.args -d '\n' brainfuck code.code < stdin.stdin
+"
diff --git a/lxc/executors/c b/lxc/executors/c
index 79ba5b0..8d60422 100755
--- a/lxc/executors/c
+++ b/lxc/executors/c
@@ -1,4 +1,7 @@
-runuser runner$1 -c "\
-    cd /tmp/$2 ; \
-    gcc -std=c11 -o binary -x c code.code ; \
-    cat args.args | xargs -d '\n' timeout -s KILL 3 ./binary < stdin.stdin"
+#!/usr/bin/bash
+
+runuser runner$1 -c "
+    cd /tmp/$2
+    gcc -std=c11 -o binary -x c code.code
+    timeout -s KILL 3 xargs -a args.args ./binary < stdin.stdin
+"
diff --git a/lxc/executors/cpp b/lxc/executors/cpp
index cfb02dd..8602962 100755
--- a/lxc/executors/cpp
+++ b/lxc/executors/cpp
@@ -1,4 +1,7 @@
-runuser runner$1 -c "\
-    cd /tmp/$2 ; \
-    g++ -std=c++17 -o binary -x c++ code.code ; \
-    cat args.args | xargs -d '\n' timeout -s KILL 3 ./binary < stdin.stdin"
+#!/bin/bash
+
+runuser runner$1 -c "
+    cd /tmp/$2
+    g++ -std=c++17 -o binary -x c++ code.code
+    timeout -s KILL 3 xargs -a args.args -d '\n' ./binary < stdin.stdin
+"
diff --git a/lxc/executors/csharp b/lxc/executors/csharp
index f2ee2ea..4946e27 100755
--- a/lxc/executors/csharp
+++ b/lxc/executors/csharp
@@ -1,4 +1,7 @@
-runuser runner$1 -c "\
-    cd /tmp/$2 ; \
-    mcs $(echo code.code | sed 's/\///') -nowarn:0219 -out:binary ; \
-    cat args.args | xargs -d '\n' timeout -s KILL 3 mono binary < stdin.stdin"
+#!/bin/bash
+
+runuser runner$1 -c "
+    cd /tmp/$2
+    mcs $(echo code.code | sed 's/\///') -nowarn:0219 -out:binary
+    timeout -s KILL 3 xargs -a args.args -d '\n' mono binary < stdin.stdin
+"
diff --git a/lxc/executors/deno b/lxc/executors/deno
index 1a92dc8..a18c647 100755
--- a/lxc/executors/deno
+++ b/lxc/executors/deno
@@ -1,7 +1,6 @@
-cd /tmp/$2
+#!/bin/bash
 
-if [[ -z $(grep '[^[:space:]]' args.args) ]]; then
-    runuser runner$1 -c "cd /tmp/$2 ; timeout -s KILL 3 deno run code.code < stdin.stdin"
-else
-    runuser runner$1 -c "cd /tmp/$2 ; cat args.args | xargs -d '\n' timeout -s KILL 3 deno run code.code < stdin.stdin"
-fi
+runuser runner$1 -c "
+    cd /tmp/$2
+    timeout -s KILL 3 xargs -a args.args -d '\n' deno run code.code < stdin.stdin
+"
diff --git a/lxc/executors/elixir b/lxc/executors/elixir
index 664501f..0343cf1 100755
--- a/lxc/executors/elixir
+++ b/lxc/executors/elixir
@@ -1,7 +1,6 @@
-cd /tmp/$2
+#!/bin/bash
 
-if [[ -z $(grep '[^[:space:]]' args.args) ]]; then
-    runuser runner$1 -c "cd /tmp/$2 ; timeout -s KILL 3 elixir code.code"
-else
-    runuser runner$1 -c "cd /tmp/$2 ; cat args.args ; xargs -d '\n' timeout -s KILL 3 elixir code.code < stdin.stdin"
-fi
+runuser runner$1 -c "
+    cd /tmp/$2
+    timeout -s KILL 3 xargs -a args.args -d '\n' elixir code.code < stdin.stdin
+"
diff --git a/lxc/executors/emacs b/lxc/executors/emacs
index 6fb0553..3a64ecc 100755
--- a/lxc/executors/emacs
+++ b/lxc/executors/emacs
@@ -1,7 +1,6 @@
-cd /tmp/$2
+#!/bin/bash
 
-if [[ -z $(grep '[^[:space:]]' args.args) ]]; then
-    runuser runner$1 -c "cd /tmp/$2 ; timeout -s KILL 3 emacs -Q --script code.code"
-else
-    runuser runner$1 -c "cd /tmp/$2 ; cat args.args | xargs -d '\n' timeout -s KILL 3 emacs -Q --script code.code < stdin.stdin"
-fi
+runuser runner$1 -c "
+    cd /tmp/$2
+    timeout -s KILL 3 xargs -a args.args -d '\n' emacs -Q --script code.code < stdin.stdin
+"
diff --git a/lxc/executors/go b/lxc/executors/go
index b713027..a9aa4fd 100755
--- a/lxc/executors/go
+++ b/lxc/executors/go
@@ -1,6 +1,8 @@
-cd /tmp/$2
-cp code.code interim.go
-file="interim.go"
-go build $file
-file=${file%%.*}
-runuser runner$1 -c "cd /tmp/$2 ; cat args.args | xargs -d '\n' timeout -s KILL 3 ./$file < stdin.stdin"
+#!/bin/bash
+
+runuser runner$1 -c "
+    cd /tmp/$2
+    cp code.code interim.go
+    go build interim.go
+    timeout -s KILL 3 xargs -a args.args -d '\n' ./interim < stdin.stdin
+"
diff --git a/lxc/executors/haskell b/lxc/executors/haskell
index becc27f..bc13034 100755
--- a/lxc/executors/haskell
+++ b/lxc/executors/haskell
@@ -1,7 +1,8 @@
-cd /tmp/$2
-mv code.code code.hs
+#!/bin/bash
 
 runuser runner$1 -c "\
-    cd /tmp/$2 ; \
-    ghc -dynamic -o binary code.hs > /dev/null 2>&1 ; \
-    cat args.args | xargs -d '\n' timeout -s KILL 3 ./binary < stdin.stdin"
+    cd /tmp/$2
+    cp code.code code.hs
+    ghc -dynamic -o binary code.hs > /dev/null 2>&1
+    timeout -s KILL 3 xargs -a args.args -d '\n' ./binary < stdin.stdin
+"
diff --git a/lxc/executors/java b/lxc/executors/java
index 7f84d81..12ac347 100755
--- a/lxc/executors/java
+++ b/lxc/executors/java
@@ -1,9 +1,11 @@
-cd /tmp/$2
-cp code.code interim.java
-name=$(grep -Po "(?<=\n|\A)\s*(public\s+)?(class|interface)\s+\K([^\/\\\n\s{]+)" interim.java)
-mv interim.java $name.java
+#!/bin/bash
 
-runuser runner$1 -c "\
-    cd /tmp/$2 ; \
-    javac $name.java ; \
-    cat args.args | xargs -d '\n' timeout -s KILL 3 java $name < stdin.stdin"
+cd /tmp/$2
+name=$(grep -Po "(?<=\n|\A)\s*(public\s+)?(class|interface)\s+\K([^\/\\\n\s{]+)" code.code)
+
+runuser runner$1 -c "
+    cd /tmp/$2
+    cp code.code $name.java
+    javac $name.java
+    timeout -s KILL 3 xargs -a args.args -d '\n' java $name < stdin.stdin
+"
diff --git a/lxc/executors/jelly b/lxc/executors/jelly
index 32b79d9..0c1b343 100755
--- a/lxc/executors/jelly
+++ b/lxc/executors/jelly
@@ -1,2 +1,6 @@
-cd /tmp/$2
-runuser runner$1 -c "cd /tmp/$2 ; cat args.args | xargs -d '\n' timeout -s KILL 3 jelly fu code.code < stdin.stdin"
+#!/bin/bash
+
+runuser runner$1 -c "
+    cd /tmp/$2
+    timeout -s KILL 3 xargs -a args.args -d '\n' jelly fu code.code < stdin.stdin
+"
diff --git a/lxc/executors/julia b/lxc/executors/julia
index 3eeb323..4350335 100755
--- a/lxc/executors/julia
+++ b/lxc/executors/julia
@@ -1,2 +1,6 @@
-cd /tmp/$2
-runuser runner$1 -c "cd /tmp/$2 ; cat args.args | xargs -d '\n' timeout -s KILL 3 julia code.code < stdin.stdin"
+#!/bin/bash
+
+runuser runner$1 -c "
+    cd /tmp/$2
+    timeout -s KILL 3 xargs -a args.args -d '\n' julia code.code < stdin.stdin
+"
diff --git a/lxc/executors/kotlin b/lxc/executors/kotlin
index 6c034e6..efd00e0 100755
--- a/lxc/executors/kotlin
+++ b/lxc/executors/kotlin
@@ -1,6 +1,8 @@
-cd /tmp/$2
-cp code.code code.kt
-runuser runner$1 -c "\
-    cd /tmp/$2 ; \
-    kotlinc code.kt -include-runtime -d code.jar ; \
-    cat args.args | xargs -d '\n' timeout -s KILL 3 java -jar code.jar < stdin.stdin"
+#!/bin/bash
+
+runuser runner$1 -c "
+    cd /tmp/$2
+    cp code.code code.kt
+    kotlinc code.kt -include-runtime -d code.jar
+    timeout -s KILL 3 xargs -a args.args -d '\n' java -jar code.jar < stdin.stdin
+"
diff --git a/lxc/executors/lua b/lxc/executors/lua
index a5ab76f..c318a87 100755
--- a/lxc/executors/lua
+++ b/lxc/executors/lua
@@ -1,2 +1,6 @@
-cd /tmp/$2
-runuser runner$1 -c "cd /tmp/$2 ; cat args.args | xargs -d '\n' timeout -s KILL 3 lua code.code < stdin.stdin"
+#!/bin/bash
+
+runuser runner$1 -c "
+    cd /tmp/$2
+    timeout -s KILL 3 xargs -a args.args -d '\n' lua code.code < stdin.stdin
+"
diff --git a/lxc/executors/nasm b/lxc/executors/nasm
index 45e1d1c..f48e5bc 100755
--- a/lxc/executors/nasm
+++ b/lxc/executors/nasm
@@ -1,5 +1,8 @@
-runuser runner$1 -c "\
-    cd /tmp/$2 ; \
-    nasm -f elf32 -o binary.o code.code ; \
-    ld -m elf_i386 binary.o -o binary ; \
-    cat args.args | xargs -d '\n' timeout -s KILL 3 ./binary < stdin.stdin"
+#!/bin/bash
+
+runuser runner$1 -c "
+    cd /tmp/$2
+    nasm -f elf32 -o binary.o code.code
+    ld -m elf_i386 binary.o -o binary
+    timeout -s KILL 3 xargs -a args.args -d '\n' ./binary < stdin.stdin
+" 
diff --git a/lxc/executors/nasm64 b/lxc/executors/nasm64
index d498a54..23ad450 100755
--- a/lxc/executors/nasm64
+++ b/lxc/executors/nasm64
@@ -1,5 +1,8 @@
-runuser runner$1 -c "\
-    cd /tmp/$2 ; \
-    nasm -f elf64 -o binary.o code.code ; \
-    ld -m elf_x86_64 binary.o -o binary ; \
-    cat args.args | xargs -d '\n' timeout -s KILL 3 ./binary < stdin.stdin"
+#!/bin/bash
+
+runuser runner$1 -c "
+    cd /tmp/$2
+    nasm -f elf64 -o binary.o code.code
+    ld -m elf_x86_64 binary.o -o binary
+    timeout -s KILL 3 xargs -a args.args -d '\n' ./binary < stdin.stdin
+"
diff --git a/lxc/executors/node b/lxc/executors/node
index 04113d2..b43fff0 100755
--- a/lxc/executors/node
+++ b/lxc/executors/node
@@ -1,7 +1,6 @@
-cd /tmp/$2
+#!/bin/bash
 
-if [[ -z $(grep '[^[:space:]]' args.args) ]]; then
-    runuser runner$1 -c "cd /tmp/$2 ; timeout -s KILL 3 node code.code < stdin.stdin"
-else
-    runuser runner$1 -c "cd /tmp/$2 ; cat args.args | xargs -d '\n' timeout -s KILL 3 node code.code < stdin.stdin"
-fi
+runuser runner$1 -c "
+    cd /tmp/$2
+    timeout -s KILL 3 xargs -a args.args -d '\n' node code.code < stdin.stdin
+"
diff --git a/lxc/executors/perl b/lxc/executors/perl
index 9951e18..8657564 100755
--- a/lxc/executors/perl
+++ b/lxc/executors/perl
@@ -1,2 +1,6 @@
-cd /tmp/$2
-runuser runner$1 -c "cd /tmp/$2 ; cat args.args | xargs -d '\n' timeout -s KILL 3 perl code.code < stdin.stdin"
+#!/bin/bash
+
+runuser runner$1 -c "
+    cd /tmp/$2
+    timeout -s KILL 3 xargs -a args.args -d '\n' perl code.code < stdin.stdin
+"
diff --git a/lxc/executors/php b/lxc/executors/php
index 470f494..2acacb9 100755
--- a/lxc/executors/php
+++ b/lxc/executors/php
@@ -1,2 +1,6 @@
-cd /tmp/$2
-runuser runner$1 -c "cd /tmp/$2 ; cat args.args | xargs -d '\n' timeout -s KILL 3 php code.code < stdin.stdin"
+#!/bin/bash
+
+runuser runner$1 -c "
+    cd /tmp/$2
+    timeout -s KILL 3 xargs -a args.args -d '\n' php code.code < stdin.stdin
+"
diff --git a/lxc/executors/python2 b/lxc/executors/python2
index 15b65de..ab90f29 100755
--- a/lxc/executors/python2
+++ b/lxc/executors/python2
@@ -1,2 +1,6 @@
-cd /tmp/$2
-runuser runner$1 -c "cd /tmp/$2 ; cat args.args | xargs -d '\n' timeout -s KILL 3 python code.code < stdin.stdin"
+#!/bin/bash
+
+runuser runner$1 -c "
+    cd /tmp/$2
+    timeout -s KILL 3 xargs -a args.args -d '\n' python code.code < stdin.stdin
+"
diff --git a/lxc/executors/python3 b/lxc/executors/python3
index a2bc47f..a944242 100755
--- a/lxc/executors/python3
+++ b/lxc/executors/python3
@@ -1,2 +1,6 @@
-cd /tmp/$2
-runuser runner$1 -c "cd /tmp/$2 ; cat args.args | xargs -d '\n' timeout -s KILL 3 python3.8 code.code < stdin.stdin"
+#!/bin/bash
+
+runuser runner$1 -c "
+    cd /tmp/$2
+    timeout -s KILL 3 xargs -a args.args -d '\n' python3.8 code.code < stdin.stdin
+"
diff --git a/lxc/executors/ruby b/lxc/executors/ruby
index 5c5b181..9407d75 100755
--- a/lxc/executors/ruby
+++ b/lxc/executors/ruby
@@ -1,2 +1,6 @@
-cd /tmp/$2
-runuser runner$1 -c "cd /tmp/$2 ; cat args.args | xargs -d '\n' timeout -s KILL 3 ruby code.code < stdin.stdin"
+#!/bin/bash
+
+runuser runner$1 -c "
+    cd /tmp/$2
+    timeout -s KILL 3 xargs -a args.args -d '\n' ruby code.code < stdin.stdin
+"
diff --git a/lxc/executors/rust b/lxc/executors/rust
index ad7d8e2..2a70609 100755
--- a/lxc/executors/rust
+++ b/lxc/executors/rust
@@ -1,5 +1,9 @@
+#!/bin/bash
+
 cd /tmp/$2
 rustc -o binary code.code
-runuser runner$1 -c "\
-    cd /tmp/$2 ; \
-    cat args.args | xargs -d '\n' timeout -s KILL 3 ./binary < stdin.stdin"
+
+runuser runner$1 -c "
+    cd /tmp/$2
+    timeout -s KILL 3 xargs -a args.args -d '\n' ./binary < stdin.stdin
+"
diff --git a/lxc/executors/swift b/lxc/executors/swift
index fd8eb9f..6e0565d 100755
--- a/lxc/executors/swift
+++ b/lxc/executors/swift
@@ -1,2 +1,6 @@
-cd /tmp/$2
-runuser runner$1 -c "cd /tmp/$2 ; cat args.args | xargs -d '\n' timeout -s KILL 3 swift code.code < stdin.stdin"
+#!/bin/bash
+
+runuser runner$1 -c "
+    cd /tmp/$2
+    timeout -s KILL 3 xargs -a args.args -d '\n' swift code.code < stdin.stdin
+"
diff --git a/lxc/executors/typescript b/lxc/executors/typescript
index 26adfba..20a382f 100755
--- a/lxc/executors/typescript
+++ b/lxc/executors/typescript
@@ -1,7 +1,10 @@
-runuser runner$1 -c "\
-    cd /tmp/$2 ; \
-    mv code.code interim.ts ; \
-    tsc interim.ts ; \
-    rm -f interim.ts ; \
-    mv interim.js code.code ; \
-    cat args.args | xargs -d '\n' timeout -s KILL 3 node code.code < stdin.stdin"
+#!/bin/bash
+
+runuser runner$1 -c "
+    cd /tmp/$2
+    mv code.code interim.ts
+    tsc interim.ts
+    rm -f interim.ts
+    mv interim.js code.code
+    xargs -a args.args -d '\n' timeout -s KILL 3 node code.code < stdin.stdin
+"

From e637a95b335a361cb754c8e0932accca64d34dd4 Mon Sep 17 00:00:00 2001
From: Vrganj <luka.barbic0@gmail.com>
Date: Sun, 17 Jan 2021 01:12:13 +0000
Subject: [PATCH 09/16] Make execute.js support older Node versions

---
 shared/execute.js | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/shared/execute.js b/shared/execute.js
index 4124928..188a123 100644
--- a/shared/execute.js
+++ b/shared/execute.js
@@ -1,18 +1,18 @@
-const { writeFile } = require('fs/promises');
+const { writeFileSync } = require('fs');
 const { spawn } = require('child_process');
 
-function execute(language, source, stdin, args) {
-    return new Promise(async resolve => {
+function execute(language, source, stdin = '', args = []) {
+    return new Promise(resolve => {
         const stamp = new Date().getTime();
         const sourceFile = `/tmp/${stamp}.code`;
 
-        await writeFile(sourceFile, source);
+        writeFileSync(sourceFile, source);
 
         const process = spawn(__dirname + '/../lxc/execute', [
             language.name,
             sourceFile,
-            stdin ?? '',
-            args?.join('\n') ?? '',
+            stdin,
+            args.join('\n'),
         ]);
 
         let stdout = '';

From e462a7d41eb328dd0e0753335e090586cf087715 Mon Sep 17 00:00:00 2001
From: Vrganj <luka.barbic0@gmail.com>
Date: Sun, 17 Jan 2021 01:23:49 +0000
Subject: [PATCH 10/16] Add additional aliases for languages

---
 shared/languages.json | 22 +++++++++++++++-------
 1 file changed, 15 insertions(+), 7 deletions(-)

diff --git a/shared/languages.json b/shared/languages.json
index ba04153..b158de2 100644
--- a/shared/languages.json
+++ b/shared/languages.json
@@ -50,7 +50,9 @@
         "name": "cpp",
         "aliases": [
             "c++",
-            "cpp"
+            "cpp",
+            "cc",
+            "cxx"
         ]
     },
     {
@@ -80,7 +82,8 @@
     {
         "name": "elixir",
         "aliases": [
-            "elixir"
+            "elixir",
+            "exs"
         ]
     },
     {
@@ -93,7 +96,8 @@
     {
         "name": "go",
         "aliases": [
-            "go"
+            "go",
+            "golang"
         ]
     },
     {
@@ -107,7 +111,8 @@
         "aliases": [
             "javascript",
             "js",
-            "node"
+            "node",
+            "node.js"
         ]
     },
     {
@@ -126,7 +131,8 @@
     {
         "name": "kotlin",
         "aliases": [
-            "kotlin"
+            "kotlin",
+            "kt"
         ]
     },
     {
@@ -144,7 +150,8 @@
     {
         "name": "perl",
         "aliases": [
-            "perl"
+            "perl",
+            "pl"
         ]
     },
     {
@@ -168,7 +175,8 @@
     {
         "name": "python2",
         "aliases": [
-            "python2"
+            "python2",
+            "py2"
         ]
     },
     {

From 14565b16e424e8fccf9833e667e0b5f0ad55d38b Mon Sep 17 00:00:00 2001
From: Vrganj <luka.barbic0@gmail.com>
Date: Sun, 17 Jan 2021 13:50:40 +0000
Subject: [PATCH 11/16] Compile rust as runner

---
 api/src/index.js      |  2 +-
 lxc/execute           | 20 ++++++++++++--------
 lxc/executors/paradoc |  8 ++++++--
 lxc/executors/rust    |  4 +---
 4 files changed, 20 insertions(+), 14 deletions(-)

diff --git a/api/src/index.js b/api/src/index.js
index d628ba1..d9a5cae 100644
--- a/api/src/index.js
+++ b/api/src/index.js
@@ -20,7 +20,7 @@ app.post(
                 errorMessage: 'Supplied language is not a string',
             },
             custom: {
-                options: value => languages.find(language => language.aliases.includes(value?.toLowerCase())),
+                options: value => value && languages.find(language => language.aliases.includes(value.toLowerCase())),
                 errorMessage: 'Supplied language is not supported by Piston',
             },
         },
diff --git a/lxc/execute b/lxc/execute
index 3438547..29c445b 100755
--- a/lxc/execute
+++ b/lxc/execute
@@ -45,13 +45,17 @@ timeout -s KILL 20 \
 
 # process janitor
 lxc-attach --clear-env -n piston -- \
-    /bin/bash -l -c "\
-        for i in {1..100}; do pkill -u runner$newinc --signal SIGKILL; done ;\
-        find /tmp -user runner$newinc -exec /bin/rm -rf {} \; ;\
-        find /var/tmp -user runner$newinc -exec /bin/rm -rf {} \; ;\
-        find /var/lock -user runner$newinc -exec /bin/rm -rf {} \; ;\
-        find /dev/shm -user runner$newinc -exec /bin/rm -rf {} \; ;\
-        find /run/lock -user runner$newinc -exec /bin/rm -rf {} \; ;\
-        " > /dev/null 2>&1 &
+    /bin/bash -l -c "
+        for i in {1..100}
+        do
+            pkill -u runner$newinc --signal SIGKILL
+        done
+
+        find /tmp -user runner$newinc -delete
+        find /var/tmp -user runner$newinc -delete
+        find /var/lock -user runner$newinc -delete
+        find /dev/shm -user runner$newinc -delete
+        find /run/lock -user runner$newinc -delete
+    " > /dev/null 2>&1 &
 
 rm -rf $basepath/tmp/$epoch
diff --git a/lxc/executors/paradoc b/lxc/executors/paradoc
index 33fe880..08e6e2c 100755
--- a/lxc/executors/paradoc
+++ b/lxc/executors/paradoc
@@ -1,2 +1,6 @@
-cd /tmp/$2
-runuser runner$1 -c "cd /tmp/$2 ; timeout -s KILL 3 python3 -m paradoc code.code <<< args.args"
+#!/bin/bash
+
+runuser runner$1 -c "
+    cd /tmp/$2
+    timeout -s KILL 3 python3 -m paradoc code.code < args.args
+"
diff --git a/lxc/executors/rust b/lxc/executors/rust
index 2a70609..9dc32ea 100755
--- a/lxc/executors/rust
+++ b/lxc/executors/rust
@@ -1,9 +1,7 @@
 #!/bin/bash
 
-cd /tmp/$2
-rustc -o binary code.code
-
 runuser runner$1 -c "
     cd /tmp/$2
+    rustc -o binary code.code
     timeout -s KILL 3 xargs -a args.args -d '\n' ./binary < stdin.stdin
 "

From 9851352f87a7dbbc9b4e032c86420f93b407e6a9 Mon Sep 17 00:00:00 2001
From: Vrganj <luka.barbic0@gmail.com>
Date: Sun, 17 Jan 2021 15:44:40 +0000
Subject: [PATCH 12/16] Move runuser to execute

---
 lxc/execute              |  2 +-
 lxc/executors/awk        |  2 +-
 lxc/executors/bash       |  6 ++----
 lxc/executors/brainfuck  |  6 ++----
 lxc/executors/c          |  8 +++-----
 lxc/executors/cpp        |  8 +++-----
 lxc/executors/csharp     |  8 +++-----
 lxc/executors/deno       |  6 ++----
 lxc/executors/elixir     |  6 ++----
 lxc/executors/emacs      |  6 ++----
 lxc/executors/go         | 10 ++++------
 lxc/executors/haskell    | 10 ++++------
 lxc/executors/java       | 10 +++-------
 lxc/executors/jelly      |  6 ++----
 lxc/executors/julia      |  6 ++----
 lxc/executors/kotlin     | 10 ++++------
 lxc/executors/lua        |  6 ++----
 lxc/executors/nasm       | 10 ++++------
 lxc/executors/nasm64     | 10 ++++------
 lxc/executors/node       |  6 ++----
 lxc/executors/paradoc    |  6 ++----
 lxc/executors/perl       |  6 ++----
 lxc/executors/php        |  6 ++----
 lxc/executors/python2    |  6 ++----
 lxc/executors/python3    |  6 ++----
 lxc/executors/ruby       |  6 ++----
 lxc/executors/rust       |  8 +++-----
 lxc/executors/swift      |  6 ++----
 lxc/executors/typescript | 14 ++++++--------
 lxc/start                |  2 +-
 30 files changed, 76 insertions(+), 132 deletions(-)

diff --git a/lxc/execute b/lxc/execute
index 29c445b..d7e5b22 100755
--- a/lxc/execute
+++ b/lxc/execute
@@ -41,7 +41,7 @@ exec 200>&-
 # runner
 timeout -s KILL 20 \
     lxc-attach --clear-env -n piston -- \
-        /bin/bash -l -c "bash /exec/$lang $newinc $epoch"
+        /bin/bash -l -c "runuser runner$newinc /exec/$lang $newinc $epoch"
 
 # process janitor
 lxc-attach --clear-env -n piston -- \
diff --git a/lxc/executors/awk b/lxc/executors/awk
index 26723b3..67cdee8 100755
--- a/lxc/executors/awk
+++ b/lxc/executors/awk
@@ -1,4 +1,4 @@
 cd /tmp/$2
 timeout -s KILL 2 sed "/___code___/Q" code.code > code.stdin
 timeout -s KILL 2 sed "1,/___code___/d" code.code > code.awk
-runuser runner$1 -c "cd /tmp/$2 ; timeout -s KILL 3 awk -f code.awk < code.stdin"
+timeout -s KILL 3 awk -f code.awk < code.stdin
diff --git a/lxc/executors/bash b/lxc/executors/bash
index 04ebb1c..6aeb899 100755
--- a/lxc/executors/bash
+++ b/lxc/executors/bash
@@ -1,6 +1,4 @@
 #!/bin/bash
 
-runuser runner$1 -c "
-    cd /tmp/$2
-    xargs -a args.args -d '\n' timeout -s KILL 3 bash code.code < stdin.stdin
-"
+cd /tmp/$2
+xargs -a args.args -d '\n' timeout -s KILL 3 bash code.code < stdin.stdin
diff --git a/lxc/executors/brainfuck b/lxc/executors/brainfuck
index 0503bcf..7ec1bfe 100755
--- a/lxc/executors/brainfuck
+++ b/lxc/executors/brainfuck
@@ -1,6 +1,4 @@
 #!/bin/bash
 
-runuser runner$1 -c "
-    cd /tmp/$2
-    timeout -s KILL 3 xargs -a args.args -d '\n' brainfuck code.code < stdin.stdin
-"
+cd /tmp/$2
+timeout -s KILL 3 xargs -a args.args -d '\n' brainfuck code.code < stdin.stdin
diff --git a/lxc/executors/c b/lxc/executors/c
index 8d60422..096b1d9 100755
--- a/lxc/executors/c
+++ b/lxc/executors/c
@@ -1,7 +1,5 @@
 #!/usr/bin/bash
 
-runuser runner$1 -c "
-    cd /tmp/$2
-    gcc -std=c11 -o binary -x c code.code
-    timeout -s KILL 3 xargs -a args.args ./binary < stdin.stdin
-"
+cd /tmp/$2
+gcc -std=c11 -o binary -x c code.code
+timeout -s KILL 3 xargs -a args.args ./binary < stdin.stdin
diff --git a/lxc/executors/cpp b/lxc/executors/cpp
index 8602962..5f7008b 100755
--- a/lxc/executors/cpp
+++ b/lxc/executors/cpp
@@ -1,7 +1,5 @@
 #!/bin/bash
 
-runuser runner$1 -c "
-    cd /tmp/$2
-    g++ -std=c++17 -o binary -x c++ code.code
-    timeout -s KILL 3 xargs -a args.args -d '\n' ./binary < stdin.stdin
-"
+cd /tmp/$2
+g++ -std=c++17 -o binary -x c++ code.code
+timeout -s KILL 3 xargs -a args.args -d '\n' ./binary < stdin.stdin
diff --git a/lxc/executors/csharp b/lxc/executors/csharp
index 4946e27..f35c876 100755
--- a/lxc/executors/csharp
+++ b/lxc/executors/csharp
@@ -1,7 +1,5 @@
 #!/bin/bash
 
-runuser runner$1 -c "
-    cd /tmp/$2
-    mcs $(echo code.code | sed 's/\///') -nowarn:0219 -out:binary
-    timeout -s KILL 3 xargs -a args.args -d '\n' mono binary < stdin.stdin
-"
+cd /tmp/$2
+mcs $(echo code.code | sed 's/\///') -nowarn:0219 -out:binary
+timeout -s KILL 3 xargs -a args.args -d '\n' mono binary < stdin.stdin
diff --git a/lxc/executors/deno b/lxc/executors/deno
index a18c647..31132fa 100755
--- a/lxc/executors/deno
+++ b/lxc/executors/deno
@@ -1,6 +1,4 @@
 #!/bin/bash
 
-runuser runner$1 -c "
-    cd /tmp/$2
-    timeout -s KILL 3 xargs -a args.args -d '\n' deno run code.code < stdin.stdin
-"
+cd /tmp/$2
+timeout -s KILL 3 xargs -a args.args -d '\n' deno run code.code < stdin.stdin
diff --git a/lxc/executors/elixir b/lxc/executors/elixir
index 0343cf1..49bfb78 100755
--- a/lxc/executors/elixir
+++ b/lxc/executors/elixir
@@ -1,6 +1,4 @@
 #!/bin/bash
 
-runuser runner$1 -c "
-    cd /tmp/$2
-    timeout -s KILL 3 xargs -a args.args -d '\n' elixir code.code < stdin.stdin
-"
+cd /tmp/$2
+timeout -s KILL 3 xargs -a args.args -d '\n' elixir code.code < stdin.stdin
diff --git a/lxc/executors/emacs b/lxc/executors/emacs
index 3a64ecc..ab41624 100755
--- a/lxc/executors/emacs
+++ b/lxc/executors/emacs
@@ -1,6 +1,4 @@
 #!/bin/bash
 
-runuser runner$1 -c "
-    cd /tmp/$2
-    timeout -s KILL 3 xargs -a args.args -d '\n' emacs -Q --script code.code < stdin.stdin
-"
+cd /tmp/$2
+timeout -s KILL 3 xargs -a args.args -d '\n' emacs -Q --script code.code < stdin.stdin
diff --git a/lxc/executors/go b/lxc/executors/go
index a9aa4fd..09c1e68 100755
--- a/lxc/executors/go
+++ b/lxc/executors/go
@@ -1,8 +1,6 @@
 #!/bin/bash
 
-runuser runner$1 -c "
-    cd /tmp/$2
-    cp code.code interim.go
-    go build interim.go
-    timeout -s KILL 3 xargs -a args.args -d '\n' ./interim < stdin.stdin
-"
+cd /tmp/$2
+cp code.code interim.go
+go build interim.go
+timeout -s KILL 3 xargs -a args.args -d '\n' ./interim < stdin.stdin
diff --git a/lxc/executors/haskell b/lxc/executors/haskell
index bc13034..df517d9 100755
--- a/lxc/executors/haskell
+++ b/lxc/executors/haskell
@@ -1,8 +1,6 @@
 #!/bin/bash
 
-runuser runner$1 -c "\
-    cd /tmp/$2
-    cp code.code code.hs
-    ghc -dynamic -o binary code.hs > /dev/null 2>&1
-    timeout -s KILL 3 xargs -a args.args -d '\n' ./binary < stdin.stdin
-"
+cd /tmp/$2
+cp code.code code.hs
+ghc -dynamic -o binary code.hs > /dev/null 2>&1
+timeout -s KILL 3 xargs -a args.args -d '\n' ./binary < stdin.stdin
diff --git a/lxc/executors/java b/lxc/executors/java
index 12ac347..52f4cf0 100755
--- a/lxc/executors/java
+++ b/lxc/executors/java
@@ -2,10 +2,6 @@
 
 cd /tmp/$2
 name=$(grep -Po "(?<=\n|\A)\s*(public\s+)?(class|interface)\s+\K([^\/\\\n\s{]+)" code.code)
-
-runuser runner$1 -c "
-    cd /tmp/$2
-    cp code.code $name.java
-    javac $name.java
-    timeout -s KILL 3 xargs -a args.args -d '\n' java $name < stdin.stdin
-"
+cp code.code $name.java
+javac $name.java
+timeout -s KILL 3 xargs -a args.args -d '\n' java $name < stdin.stdin
diff --git a/lxc/executors/jelly b/lxc/executors/jelly
index 0c1b343..945444e 100755
--- a/lxc/executors/jelly
+++ b/lxc/executors/jelly
@@ -1,6 +1,4 @@
 #!/bin/bash
 
-runuser runner$1 -c "
-    cd /tmp/$2
-    timeout -s KILL 3 xargs -a args.args -d '\n' jelly fu code.code < stdin.stdin
-"
+cd /tmp/$2
+timeout -s KILL 3 xargs -a args.args -d '\n' jelly fu code.code < stdin.stdin
diff --git a/lxc/executors/julia b/lxc/executors/julia
index 4350335..e8b4ea5 100755
--- a/lxc/executors/julia
+++ b/lxc/executors/julia
@@ -1,6 +1,4 @@
 #!/bin/bash
 
-runuser runner$1 -c "
-    cd /tmp/$2
-    timeout -s KILL 3 xargs -a args.args -d '\n' julia code.code < stdin.stdin
-"
+cd /tmp/$2
+timeout -s KILL 3 xargs -a args.args -d '\n' julia code.code < stdin.stdin
diff --git a/lxc/executors/kotlin b/lxc/executors/kotlin
index efd00e0..c304575 100755
--- a/lxc/executors/kotlin
+++ b/lxc/executors/kotlin
@@ -1,8 +1,6 @@
 #!/bin/bash
 
-runuser runner$1 -c "
-    cd /tmp/$2
-    cp code.code code.kt
-    kotlinc code.kt -include-runtime -d code.jar
-    timeout -s KILL 3 xargs -a args.args -d '\n' java -jar code.jar < stdin.stdin
-"
+cd /tmp/$2
+cp code.code code.kt
+kotlinc code.kt -include-runtime -d code.jar
+timeout -s KILL 3 xargs -a args.args -d '\n' java -jar code.jar < stdin.stdin
diff --git a/lxc/executors/lua b/lxc/executors/lua
index c318a87..4caa4b6 100755
--- a/lxc/executors/lua
+++ b/lxc/executors/lua
@@ -1,6 +1,4 @@
 #!/bin/bash
 
-runuser runner$1 -c "
-    cd /tmp/$2
-    timeout -s KILL 3 xargs -a args.args -d '\n' lua code.code < stdin.stdin
-"
+cd /tmp/$2
+timeout -s KILL 3 xargs -a args.args -d '\n' lua code.code < stdin.stdin
diff --git a/lxc/executors/nasm b/lxc/executors/nasm
index f48e5bc..ffe8fd0 100755
--- a/lxc/executors/nasm
+++ b/lxc/executors/nasm
@@ -1,8 +1,6 @@
 #!/bin/bash
 
-runuser runner$1 -c "
-    cd /tmp/$2
-    nasm -f elf32 -o binary.o code.code
-    ld -m elf_i386 binary.o -o binary
-    timeout -s KILL 3 xargs -a args.args -d '\n' ./binary < stdin.stdin
-" 
+cd /tmp/$2
+nasm -f elf32 -o binary.o code.code
+ld -m elf_i386 binary.o -o binary
+timeout -s KILL 3 xargs -a args.args -d '\n' ./binary < stdin.stdin
diff --git a/lxc/executors/nasm64 b/lxc/executors/nasm64
index 23ad450..98c2aab 100755
--- a/lxc/executors/nasm64
+++ b/lxc/executors/nasm64
@@ -1,8 +1,6 @@
 #!/bin/bash
 
-runuser runner$1 -c "
-    cd /tmp/$2
-    nasm -f elf64 -o binary.o code.code
-    ld -m elf_x86_64 binary.o -o binary
-    timeout -s KILL 3 xargs -a args.args -d '\n' ./binary < stdin.stdin
-"
+cd /tmp/$2
+nasm -f elf64 -o binary.o code.code
+ld -m elf_x86_64 binary.o -o binary
+timeout -s KILL 3 xargs -a args.args -d '\n' ./binary < stdin.stdin
diff --git a/lxc/executors/node b/lxc/executors/node
index b43fff0..3262b53 100755
--- a/lxc/executors/node
+++ b/lxc/executors/node
@@ -1,6 +1,4 @@
 #!/bin/bash
 
-runuser runner$1 -c "
-    cd /tmp/$2
-    timeout -s KILL 3 xargs -a args.args -d '\n' node code.code < stdin.stdin
-"
+cd /tmp/$2
+timeout -s KILL 3 xargs -a args.args -d '\n' node code.code < stdin.stdin
diff --git a/lxc/executors/paradoc b/lxc/executors/paradoc
index 08e6e2c..be58dad 100755
--- a/lxc/executors/paradoc
+++ b/lxc/executors/paradoc
@@ -1,6 +1,4 @@
 #!/bin/bash
 
-runuser runner$1 -c "
-    cd /tmp/$2
-    timeout -s KILL 3 python3 -m paradoc code.code < args.args
-"
+cd /tmp/$2
+timeout -s KILL 3 python3 -m paradoc code.code < args.args
diff --git a/lxc/executors/perl b/lxc/executors/perl
index 8657564..8b65855 100755
--- a/lxc/executors/perl
+++ b/lxc/executors/perl
@@ -1,6 +1,4 @@
 #!/bin/bash
 
-runuser runner$1 -c "
-    cd /tmp/$2
-    timeout -s KILL 3 xargs -a args.args -d '\n' perl code.code < stdin.stdin
-"
+cd /tmp/$2
+timeout -s KILL 3 xargs -a args.args -d '\n' perl code.code < stdin.stdin
diff --git a/lxc/executors/php b/lxc/executors/php
index 2acacb9..9f21f7b 100755
--- a/lxc/executors/php
+++ b/lxc/executors/php
@@ -1,6 +1,4 @@
 #!/bin/bash
 
-runuser runner$1 -c "
-    cd /tmp/$2
-    timeout -s KILL 3 xargs -a args.args -d '\n' php code.code < stdin.stdin
-"
+cd /tmp/$2
+timeout -s KILL 3 xargs -a args.args -d '\n' php code.code < stdin.stdin
diff --git a/lxc/executors/python2 b/lxc/executors/python2
index ab90f29..5fa1c3e 100755
--- a/lxc/executors/python2
+++ b/lxc/executors/python2
@@ -1,6 +1,4 @@
 #!/bin/bash
 
-runuser runner$1 -c "
-    cd /tmp/$2
-    timeout -s KILL 3 xargs -a args.args -d '\n' python code.code < stdin.stdin
-"
+cd /tmp/$2
+timeout -s KILL 3 xargs -a args.args -d '\n' python code.code < stdin.stdin
diff --git a/lxc/executors/python3 b/lxc/executors/python3
index a944242..6cb93f8 100755
--- a/lxc/executors/python3
+++ b/lxc/executors/python3
@@ -1,6 +1,4 @@
 #!/bin/bash
 
-runuser runner$1 -c "
-    cd /tmp/$2
-    timeout -s KILL 3 xargs -a args.args -d '\n' python3.8 code.code < stdin.stdin
-"
+cd /tmp/$2
+timeout -s KILL 3 xargs -a args.args -d '\n' python3.8 code.code < stdin.stdin
diff --git a/lxc/executors/ruby b/lxc/executors/ruby
index 9407d75..ebb9b06 100755
--- a/lxc/executors/ruby
+++ b/lxc/executors/ruby
@@ -1,6 +1,4 @@
 #!/bin/bash
 
-runuser runner$1 -c "
-    cd /tmp/$2
-    timeout -s KILL 3 xargs -a args.args -d '\n' ruby code.code < stdin.stdin
-"
+cd /tmp/$2
+timeout -s KILL 3 xargs -a args.args -d '\n' ruby code.code < stdin.stdin
diff --git a/lxc/executors/rust b/lxc/executors/rust
index 9dc32ea..137dffa 100755
--- a/lxc/executors/rust
+++ b/lxc/executors/rust
@@ -1,7 +1,5 @@
 #!/bin/bash
 
-runuser runner$1 -c "
-    cd /tmp/$2
-    rustc -o binary code.code
-    timeout -s KILL 3 xargs -a args.args -d '\n' ./binary < stdin.stdin
-"
+cd /tmp/$2
+rustc -o binary code.code
+timeout -s KILL 3 xargs -a args.args -d '\n' ./binary < stdin.stdin
diff --git a/lxc/executors/swift b/lxc/executors/swift
index 6e0565d..a8327f7 100755
--- a/lxc/executors/swift
+++ b/lxc/executors/swift
@@ -1,6 +1,4 @@
 #!/bin/bash
 
-runuser runner$1 -c "
-    cd /tmp/$2
-    timeout -s KILL 3 xargs -a args.args -d '\n' swift code.code < stdin.stdin
-"
+cd /tmp/$2
+timeout -s KILL 3 xargs -a args.args -d '\n' swift code.code < stdin.stdin
diff --git a/lxc/executors/typescript b/lxc/executors/typescript
index 20a382f..8c1873d 100755
--- a/lxc/executors/typescript
+++ b/lxc/executors/typescript
@@ -1,10 +1,8 @@
 #!/bin/bash
 
-runuser runner$1 -c "
-    cd /tmp/$2
-    mv code.code interim.ts
-    tsc interim.ts
-    rm -f interim.ts
-    mv interim.js code.code
-    xargs -a args.args -d '\n' timeout -s KILL 3 node code.code < stdin.stdin
-"
+cd /tmp/$2
+mv code.code interim.ts
+tsc interim.ts
+rm -f interim.ts
+mv interim.js code.code
+timeout -s KILL 3 xargs -a args.args -d '\n' node code.code < stdin.stdin
diff --git a/lxc/start b/lxc/start
index 6c13c98..fec7aef 100755
--- a/lxc/start
+++ b/lxc/start
@@ -3,7 +3,7 @@
 mkdir -p /var/lib/lxc/piston/rootfs/exec
 rm -f /var/lib/lxc/piston/rootfs/exec/*
 cp -f executors/* /var/lib/lxc/piston/rootfs/exec
-chmod 700 /var/lib/lxc/piston/rootfs/exec/*
+chmod 555 /var/lib/lxc/piston/rootfs/exec/*
 chown -R root:root /var/lib/lxc/piston/rootfs/exec
 
 lxc-start -n piston -d

From 7f03de9f71707145751266405c613b054b44f98b Mon Sep 17 00:00:00 2001
From: Vrganj <luka.barbic0@gmail.com>
Date: Sun, 17 Jan 2021 15:53:46 +0000
Subject: [PATCH 13/16] Add shebang to awk

---
 lxc/executors/awk | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/lxc/executors/awk b/lxc/executors/awk
index 67cdee8..dafa525 100755
--- a/lxc/executors/awk
+++ b/lxc/executors/awk
@@ -1,3 +1,5 @@
+#!/bin/bash
+
 cd /tmp/$2
 timeout -s KILL 2 sed "/___code___/Q" code.code > code.stdin
 timeout -s KILL 2 sed "1,/___code___/d" code.code > code.awk

From 1c99570e671f10fac04473d2e43f2be0c28bafa8 Mon Sep 17 00:00:00 2001
From: Vrganj <luka.barbic0@gmail.com>
Date: Sun, 17 Jan 2021 22:29:45 +0000
Subject: [PATCH 14/16] Change awk executor

---
 lxc/executors/awk | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/lxc/executors/awk b/lxc/executors/awk
index dafa525..8590654 100755
--- a/lxc/executors/awk
+++ b/lxc/executors/awk
@@ -1,6 +1,4 @@
 #!/bin/bash
 
 cd /tmp/$2
-timeout -s KILL 2 sed "/___code___/Q" code.code > code.stdin
-timeout -s KILL 2 sed "1,/___code___/d" code.code > code.awk
-timeout -s KILL 3 awk -f code.awk < code.stdin
+timeout -s KILL 3 awk -f code.code < stdin.stdin

From 2b1f213beab77d24bf201dacfc1af6c798bf9ee6 Mon Sep 17 00:00:00 2001
From: Vrganj <luka.barbic0@gmail.com>
Date: Sun, 17 Jan 2021 22:30:02 +0000
Subject: [PATCH 15/16] Change rust install instructions

---
 var/install.txt | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/var/install.txt b/var/install.txt
index 9be572e..ae81b05 100644
--- a/var/install.txt
+++ b/var/install.txt
@@ -96,11 +96,13 @@ make
 make install
 
 # install rust
-# final binary: /opt/.cargo/bin/rustc
-# get version: /opt/.cargo/bin/rustc --version
-curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh
-echo 'export PATH=$PATH:/opt/.cargo/bin' >> /opt/.profile
-source /opt/.profile
+# final binary: /usr/local/bin/rustc
+# get version: /usr/local/bin/rustc --version
+cd /opt && mkdir rust && cd rust
+wget https://static.rust-lang.org/dist/rust-1.49.0-x86_64-unknown-linux-gnu.tar.gz
+tar -xzf rust-1.49.0-x86_64-unknown-linux-gnu.tar.gz
+cd rust-1.49.0-x86_64-unknown-linux-gnu
+./install.sh
 
 # install swift
 # final binary: /opt/swift/swift-5.1.5-RELEASE-ubuntu18.04/usr/bin/swift

From a2eeff85b5ae4a363adc75581cbb76cb1d48a02d Mon Sep 17 00:00:00 2001
From: Vrganj <luka.barbic0@gmail.com>
Date: Sun, 17 Jan 2021 22:36:52 +0000
Subject: [PATCH 16/16] Revert back to the mess the awk executor was

---
 lxc/executors/awk | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/lxc/executors/awk b/lxc/executors/awk
index 8590654..dafa525 100755
--- a/lxc/executors/awk
+++ b/lxc/executors/awk
@@ -1,4 +1,6 @@
 #!/bin/bash
 
 cd /tmp/$2
-timeout -s KILL 3 awk -f code.code < stdin.stdin
+timeout -s KILL 2 sed "/___code___/Q" code.code > code.stdin
+timeout -s KILL 2 sed "1,/___code___/d" code.code > code.awk
+timeout -s KILL 3 awk -f code.awk < code.stdin