added a version of piston which uses lxc instead of docker, added tests for lxc

lxc/execute

@@ -0,0 +1,76 @@
+#!/usr/bin/env bash
+
+dir="$( cd "$( dirname "$0" )" && pwd )"
+
+if [ -z "$1" ]; then
+    echo "invalid args"
+    exit
+fi
+if [ -z "$2" ]; then
+    echo "invalid args"
+    exit
+fi
+
+lang=$1
+epoch=$(date +%s%3N)
+basepath="/var/lib/lxc/piston/rootfs"
+filepath="/tmp/$epoch/code.code"
+file=$(basename $2)
+argpath="/tmp/$epoch/args.args"
+arg=$(basename $argpath)
+
+# write arg file
+mkdir -p $basepath/tmp/$epoch
+chmod 777 $basepath/tmp/$epoch
+cat $file > $basepath$filepath
+echo "${@:3}" > $basepath$argpath
+
+bin=
+case "$lang" in
+"python2")
+    bin=python2
+    ;;
+"python" | "python3")
+    bin=python3
+    ;;
+"ruby")
+    bin=ruby
+    ;;
+"javascript" | "js" | "node")
+    bin=node
+    ;;
+"c")
+    bin=c
+    ;;
+"cpp" | "c++")
+    bin=cpp
+    ;;
+"go")
+    bin=go
+    ;;
+"c#" | "csharp" | "cs")
+    bin=csharp
+    ;;
+"r")
+    bin=r
+    ;;
+"php")
+    bin=php
+    ;;
+"nasm" | "asm")
+    bin=nasm
+    ;;
+"java")
+    bin=java
+    ;;
+*)
+    echo "invalid language"
+    exit
+esac
+
+lxc-attach -n piston -- \
+    /bin/su ubuntu \
+        -c "bash /home/ubuntu/$bin $epoch 2>&1 | head -c 65536"
+
+#rm -f $basepath$filepath
+#rm -f $basepath$argpath

lxc/executors/c

@@ -0,0 +1,3 @@
+cd /tmp/$1
+timeout -s KILL 10 gcc -o binary -x c code.code
+timeout -s KILL 3 bash -c "cat args.args | xargs -d '\n' ./binary"

lxc/executors/cpp

@@ -0,0 +1,3 @@
+cd /tmp/$1
+timeout -s KILL 10 g++ -o binary -x c++ code.code
+timeout -s KILL 3 bash -c "cat args.args | xargs -d '\n' ./binary"

lxc/executors/csharp

@@ -0,0 +1,3 @@
+cd /tmp/$1
+timeout -s KILL 10 mcs $(echo code.code | sed 's/\///') -out:binary
+timeout -s KILL 3 bash -c "cat args.args | xargs -d '\n' mono binary"

lxc/executors/go

@@ -0,0 +1,6 @@
+cd /tmp/$1
+cp code.code interim.go
+file="interim.go"
+GOROOT=/usr/lib/go timeout -s KILL 10 go build $file
+file=${file%%.*}
+timeout -s KILL 3 bash -c "cat args.args | xargs -d '\n' ./$file"

lxc/executors/java

@@ -0,0 +1,6 @@
+cd /tmp/$1
+cp code.code interim.java
+name=$(cat interim.java | grep -Eo 'public\s+class\s+([A-Za-z0-9]+)' | sed -n 's/  */ /gp' | cut -d' ' -f3)
+mv interim.java $name.java
+timeout -s KILL 10 javac $name.java
+timeout -s KILL 3 bash -c "cat args.args | xargs -d '\n' java $name"

lxc/executors/nasm

@@ -0,0 +1,4 @@
+cd /tmp/$1
+timeout -s KILL 10 nasm -f elf64 -o binary.o code.code
+timeout -s KILL 10 ld binary.o -o binary
+timeout -s KILL 3 bash -c "cat args.args | xargs -d '\n' ./binary"

lxc/executors/node

@@ -0,0 +1,2 @@
+cd /tmp/$1
+timeout -s KILL 3 bash -c "cat args.args | xargs -d '\n' nodejs code.code"

lxc/executors/php

@@ -0,0 +1,2 @@
+cd /tmp/$1
+timeout -s KILL 3 bash -c "cat args.args | xargs -d '\n' php code.code"

lxc/executors/python2

@@ -0,0 +1,2 @@
+cd /tmp/$1
+timeout -s KILL 3 bash -c "cat args.args | xargs -d '\n' python2 code.code"

lxc/executors/python3

@@ -0,0 +1,2 @@
+cd /tmp/$1
+timeout -s KILL 3 bash -c "cat args.args | xargs -d '\n' python3.6 code.code"

lxc/executors/r

@@ -0,0 +1,2 @@
+cd /tmp/$1
+timeout -s KILL 3 bash -c "cat args.args | xargs -d '\n' Rscript code.code"

lxc/executors/ruby

@@ -0,0 +1,2 @@
+cd /tmp/$1
+timeout -s KILL 3 bash -c "cat args.args | xargs -d '\n' ruby code.code"

lxc/notes.txt

@@ -0,0 +1,26 @@
+# install
+yum install lxc lxc-template debootstrap
+
+# create container
+lxc-create -t download -n piston
+select ubuntu, bionic, amd64
+
+# start container
+lxc-start -n piston -d
+
+# shell in and install stuff
+lxc-attach -n piston
+export PATH=/bin:/usr/bin:/usr/local/sbin:/usr/sbin:/sbin
+sed -i 's/http:\/\/archive.ubuntu.com\/ubuntu/http:\/\/mirror.math.princeton.edu\/pub\/ubuntu/' /etc/apt/sources.list
+apt-get update
+apt-get -y install tzdata nano dpkg-dev build-essential python python3 ruby nodejs golang php7.2 r-base mono-complete nasm openjdk-8-jdk
+
+# apply limits
+echo 'ubuntu soft nproc 128' >> /etc/security/limits.conf
+echo 'ubuntu hard nproc 128' >> /etc/security/limits.conf
+echo 'ubuntu soft nofile 1024' >> /etc/security/limits.conf
+echo 'ubuntu hard nofile 1024' >> /etc/security/limits.conf
+echo 'runner soft nproc 16' >> /etc/security/limits.conf
+echo 'runner hard nproc 16' >> /etc/security/limits.conf
+echo 'runner soft nofile 512' >> /etc/security/limits.conf
+echo 'runner hard nofile 512' >> /etc/security/limits.conf

lxc/shell

@@ -0,0 +1,3 @@
+#!/usr/bin/env bash
+
+lxc-attach -n piston

lxc/start

@@ -0,0 +1,6 @@
+#!/usr/bin/env bash
+
+rm -f /var/lib/lxc/piston/rootfs/home/ubuntu/*
+cp -f executors/* /var/lib/lxc/piston/rootfs/home/ubuntu
+
+lxc-start -n piston -d

lxc/stop

@@ -0,0 +1,3 @@
+#!/usr/bin/env bash
+
+lxc-stop -n piston -k

tests/test.c

@@ -0,0 +1,5 @@
+#include <stdio.h>
+
+void main(void) {
+    printf("good\n");
+}

tests/test.cpp

@@ -0,0 +1,6 @@
+#include <iostream>
+
+int main(void) {
+    printf("good\n");
+    return 1;
+}

tests/test.cs

@@ -0,0 +1,9 @@
+using System;
+
+namespace HelloWorld {
+    class Hello {
+        static void Main() {
+            Console.WriteLine("good");
+        }
+    }
+}

tests/test.go

@@ -0,0 +1,7 @@
+package main
+
+import "fmt"
+
+func main() {
+    fmt.Println("good")
+}

tests/test.java

@@ -0,0 +1,5 @@
+public class HelloWorld {
+    public static void main(String[] args) {
+        System.out.println("good");
+    }
+}

tests/test.js

@@ -0,0 +1 @@
+console.log('good')

tests/test.nasm

@@ -0,0 +1,16 @@
+SECTION .DATA
+good:     db 'good',10
+txtlen:  equ $-good
+
+SECTION .TEXT
+GLOBAL _start
+
+_start:
+mov eax,4
+mov ebx,1
+mov ecx,good
+mov edx,txtlen
+int 80h
+mov eax,1
+mov ebx,0
+int 80h

tests/test.php

@@ -0,0 +1,3 @@
+<?php
+
+echo 'good' . "\n";

tests/test.r

@@ -0,0 +1 @@
+print('good')

tests/test.rb

@@ -0,0 +1 @@
+puts 'good'

tests/test2.py

@@ -0,0 +1 @@
+print 'good'

tests/test3.py

@@ -0,0 +1 @@
+print('good')

tests/test_all_lxc

@@ -0,0 +1,26 @@
+#!/usr/bin/env bash
+
+echo 'testing c'
+../lxc/execute c test.c
+echo 'testing cpp'
+../lxc/execute cpp test.cpp
+echo 'testing cs'
+../lxc/execute cs test.cs
+echo 'testing go'
+../lxc/execute go test.go
+echo 'testing java'
+../lxc/execute java test.java
+echo 'testing asm'
+../lxc/execute asm test.nasm
+echo 'testing js'
+../lxc/execute js test.js
+echo 'testing php'
+../lxc/execute php test.php
+echo 'testing python2'
+../lxc/execute python2 test2.py
+echo 'testing python3'
+../lxc/execute python3 test3.py
+echo 'testing r'
+../lxc/execute r test.r
+echo 'testing ruby'
+../lxc/execute ruby test.rb