engineer-man/piston

A high performance general purpose code execution engine.

piston's Issues

Run Rust Test snippents.

engineer-man/piston-bot#5

I would like to implement this functionality in piston.
There are two ways I think I can do this.

• Add rust_test as a new language which would require the least changes.
• Add test as an arg to the rustc.
  • This might produce some changes in the current rust language behaviour.

Which path would be preferable.

Deno cannot import packages

Deno allows you to import from remote URLs in your code when building, however piston disables networking.
Some libraries are required (e.g. std), which you pull from a remote url

import { printf } from "https://deno.land/std/fmt/printf.ts";
printf("Hello world!")

crystal executor

See packages/ for existing examples

Please merge to v3 branch!

ruby executor

See packages/ for existing examples
Please merge to v3 branch!

add Support for Crystal

Is there a way to dockerize this?

Is there a way to use this as a docker container, so its an easy install?

python3 executor

See packages/ for existing examples
Please merge to v3 branch!

Update bash

You should update bash, the current one is ~4 years old.

scala executor

See packages/ for existing examples
Please merge to v3 branch!

Hosted version appears vulnerable to CVE-2021-3156

Recent exploit was published on sudo: https://www.qualys.com/2021/01/26/cve-2021-3156/baron-samedit-heap-based-overflow-sudo.txt

The hosted version of piston on emkc.org though I'm not sure if this is serious given your security model.

POC:

$ curl -sX POST https://emkc.org/api/v1/piston/execute -d '{"language":"bash","source":"sudoedit -s '"'"'\\'"'"' `perl -e '"'"'print \"A\" x 65536'"'"'`","stdin":"","args":[""]}' -H "Content-Type: application/json" | jq
{
  "ran": true,
  "language": "bash",
  "version": "4.4.20",
  "output": "code.code: line 1:  2264 Segmentation fault      sudoedit -s '\\' `perl -e 'print \"A\" x 65536'`",
  "stdout": "",
  "stderr": "code.code: line 1:  2264 Segmentation fault      sudoedit -s '\\' `perl -e 'print \"A\" x 65536'`"
}

perl executor

See packages/ for existing examples
Please merge to v3 branch!

add rust support

swift executor

See packages/ for existing examples
Please merge to v3 branch!

prolog executor

See packages/ for existing examples
Please merge to v3 branch!

paradoc executor

See packages/ for existing examples
Please merge to v3 branch!

AWK executor

See packages/ for existing examples

Please merge to v3 branch!

API returns 200 on invalid language

POST to https://emkc.org/api/v1/piston/execute with a language that isn't whitelisted will result in a 200 with the response

{"output":""}

Here's some code to reproduce it:

fetch('https://emkc.org/api/v1/piston/execute', {
	method: 'POST',
	headers: {
		'Content-Type': 'application/json'
	},
	body: JSON.stringify({ language: 'randomstuff123', source: 'potatoes', args: [] }),
}).then(res => res.json()).then(console.log);

api/v1/piston/version 404

When trying to call the version api listed in the readme it returns a 404 error

Preserve newlines in stdin

Stdin is passed as argv, which is probably why it turns newlines into spaces. To get around this, the stdin file should be written to directly, the same way the code is.

By the way, why does the API write to a temporary file and let the executor copy it instead of just writing to the final path? Is there a reason for that? I just copied what the previous API did when rewriting it.

Suggestions for more languages

• F#
• CoffeScript
• Rockstar
• Turbo Pascal and other Pascal Dialects with Free Pascal or Modern Pascal

I have no clue who would use these, I just think it's fun to add more languages

Different Field for Std Err

For example:

{
	"input": "there",
	"source": "print('hello' + 1)",
	"language": "python"
}

should probably respond with

{
  "ran": true,
  "language": "python",
  "version": "3.6.9",
  "output": "",
  "error": "Traceback (most recent call last):\n  File \"code.code\", line 1, in <module>\n    print('hello' + 1)\nTypeError: can only concatenate str (not \"int\") to str"
}

node executor

See packages/ for existing examples
Please merge to v3 branch!

verify piston works on debian

test install to a debian vm and document any issues

brainfuck executor

See packages/ for existing examples

Please merge to v3 branch!

test install to macos and provide instructions

not sure if piston works and can be installed on macos, if someone wants to take this on that would be great.

php executor

See packages/ for existing examples
Please merge to v3 branch!

Minor nit- Platforms

https://github.com/engineer-man/piston/blob/master/var/install.txt#L19 mentions debian/arch/mac os

You have Arch 😂 debian should be analogous to Ubuntu. Ubuntu is based from Debian. I am 99% certain the packages you install have the same names. OSx would run in a VM, which could be any of the above three (that is how docker on osx works).

Suggestion

Remove at least arch. Maybe debian. Maybe make a docker image using alpine so Mac users can do something almost as easy as brew install (docker run ...)

Accept Standard Input

For example:

{
	"input": "there",
	"source": "print('hello ' + input())",
	"language": "python"
}

should respond with

{
  "ran": true,
  "language": "python",
  "version": "3.6.9",
  "output": "hello there"
}

python2 executor

See packages/ for existing examples
Please merge to v3 branch!

Output whitespace is trimmed

When running the below code

print(' ')

and

#include <iostream>
#include <iomanip>
std::cout << std::setw(8) << "hello" << '\n';

I would expect the outputs to be a single space for the first and

   hello

for the second but instead the bot says "Your code ran without output" on the first and outputs

hello

for the second.

Edit: the same thing happens with tabs.

crystal executor

See packages/ for existing examples

Please merge to v3 branch!

zig executor

See packages/ for existing examples

Please merge to v3 branch!

c executor

See packages/ for existing examples

Please merge to v3 branch!

Update rust

Update rust to a newer version, the one used currently is from 2019

osabie executor

See packages/ for existing examples
Please merge to v3 branch!

Piston API

Piston API is the core API which manages the lifecycle of languages and code execution.

The Piston API entails both the package manager and execution manager.

No response when running certain programs

Programs like:

bash

yes

and

cpp

#include <iostream>

int main()
{
    while (true)
    {
        &printf == 0x000;
        printf("test");
    }
}

cause the API to "hang" and not send any reply.

Update Python to 3.9

I can save 1 more char on the current contest with py3.9
okthxbye

cpp executor

See packages/ for existing examples

Please merge to v3 branch!

add support for Deno

Update C++ Standard to C++20

Since the C++20 standard has been published in December 2020 piston should use it.

This could be as easy as changing -std=c++17 to -std++20 in

piston/lxc/executors/cpp

Line 4 in 0f8350b

timeout -s KILL 10 g++ -std=c++17 -o binary -x c++ code.code

but I'm not sure if the installed g++ compiler supports C++20

Failed to fetch when installing

When i try to do the following step:

install all necessary piston dependencies

The following error comes up: (when running apt-get update)

root@piston:/# echo 'source /opt/.profile' >> /opt/.bashrc
root@piston:/# echo 'export HOME=/opt' >> /opt/.profile
root@piston:/# echo 'export TERM=linux' >> /opt/.profile
root@piston:/# echo 'export PATH=$PATH:/opt/.local/bin' >> /opt/.profile
root@piston:/# export HOME=/opt
root@piston:/# export TERM=linux
root@piston:/# sed -i 's//root//opt/' /etc/passwd
root@piston:/# sed -i \

's/http:\/\/archive.ubuntu.com\/ubuntu/http:\/\/mirror.math.princeton.edu\/pub\/ubuntu/' \
/etc/apt/sources.list

root@piston:/# apt-get update
Err:1 http://security.ubuntu.com/ubuntu bionic-security InRelease
Temporary failure resolving 'security.ubuntu.com'
Err:2 http://mirror.math.princeton.edu/pub/ubuntu bionic InRelease
Temporary failure resolving 'mirror.math.princeton.edu'
Err:3 http://mirror.math.princeton.edu/pub/ubuntu bionic-updates InRelease
Temporary failure resolving 'mirror.math.princeton.edu'
Reading package lists... Done
W: Failed to fetch http://mirror.math.princeton.edu/pub/ubuntu/dists/bionic/InRelease Temporary failure resolving 'mirror.math.princeton.edu'
W: Failed to fetch http://mirror.math.princeton.edu/pub/ubuntu/dists/bionic-updates/InRelease Temporary failure resolving 'mirror.math.princeton.edu'
W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/bionic-security/InRelease Temporary failure resolving 'security.ubuntu.com'

Im on a debian VPS, can someone help me out?

Ability to install PIP packages for Python code execution

Most of the time users want a sandbox environment to test how a function from a package works; it would be very useful to have an option to provide a list of packages that should be installed on the container before code execution.

Something like this would be my suggestion to keep backward compatibility:

{
    "language": "python",
    "source": "import bcrypt\npassword = b\"super secret password\"\nhashed = bcrypt.hashpw(password, bcrypt.gensalt())\nif bcrypt.checkpw(password, hashed):\n    print('It Matches!')\nelse:\n    print('It Does not Match :(')",
    "stdin": "",
    "args": [
    ],
    "packages": [
        "bcrypt"
    ]
}

Bash executor

See packages/ for existing examples

Please merge to v3 branch!

[Request] Add support for POSIX shell/dash

Since dash (an implementation of POSIX sh) is already installed, it would be nice to be able to directly use it (instead of having to write to a file then execute dash with it).

typescript executor

See packages/ for existing examples
Please merge to v3 branch!

nim executor

See packages/ for existing examples
Please merge to v3 branch!

discord bot not running php

Add COW

Add support for COW: https://esolangs.org/wiki/COW

rust executor

See packages/ for existing examples
Please merge to v3 branch!