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piston
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Code Issues Projects Releases Wiki Activity

Update for new API

This commit is contained in:
Vrganj 2021-01-23 21:31:23 +01:00
parent c30a67cf05 b64598763d
commit c10a30b69a
78 changed files with 2063 additions and 868 deletions
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1
api/.gitignore vendored Normal file
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node_modules

263
api/main.go
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@ -1,263 +0,0 @@
package main
import (
"bytes"
"encoding/json"
"fmt"
"io/ioutil"
"net/http"
"os/exec"
"regexp"
"strings"
"time"
)
type Inbound struct {
Language string `json:"language"`
Source string `json:"source"`
Args []string `json:"args"`
}
type Problem struct {
Code string `json:"code"`
Message string `json:"message"`
}
type Outbound struct {
Ran bool `json:"ran"`
Language string `json:"language"`
Version string `json:"version"`
Output string `json:"output"`
}
type Language struct {
Name string `json:"name,omitempty"`
Version string `json:"version,omitempty"`
}
var instance int
var languages []Language
func main() {
port := "2000"
var err error
languages, err = UpdateVersions()
if err != nil {
fmt.Println("could not get version info and therefore couldn't start")
fmt.Println(err)
return
}
fmt.Println("starting api on port", port)
http.HandleFunc("/execute", Execute)
http.HandleFunc("/versions", Versions)
http.ListenAndServe(":"+port, nil)
}
func Execute(res http.ResponseWriter, req *http.Request) {
res.Header().Set("Content-Type", "application/json")
// get json
inbound := Inbound{}
message := json.NewDecoder(req.Body)
message.Decode(&inbound)
whitelist := []string{
"awk",
"bash",
"brainfuck", "bf",
"c",
"cpp", "c++",
"csharp", "cs", "c#",
"d",
"deno", "denojs", "denots",
"elixir", "exs",
"emacs", "elisp", "el",
"go",
"haskell", "hs",
"java",
"jelly",
"julia", "jl",
"kotlin",
"lua",
"nasm", "asm",
"nasm64", "asm64",
"nim",
"node", "javascript", "js",
"perl", "pl",
"php",
"python2",
"python3", "python",
"paradoc",
"ruby",
"rust",
"swift",
"typescript", "ts",
}
// check if the supplied language is supported
// now calls function and returns
for _, lang := range whitelist {
if lang == inbound.Language {
launch(inbound, res)
return
}
}
// now only called when the language is not supported
problem := Problem{
Code: "unsupported_language",
Message: inbound.Language + " is not supported by Piston",
}
pres, _ := json.Marshal(problem)
res.Write(pres)
}
func Versions(res http.ResponseWriter, req *http.Request) {
res.Header().Set("Content-Type", "application/json")
data, _ := json.Marshal(languages)
res.Write(data)
}
func launch(request Inbound, res http.ResponseWriter) {
stamp := time.Now().UnixNano()
// write the code to temp dir
srcfile := fmt.Sprintf("/tmp/%d.code", stamp)
ioutil.WriteFile(srcfile, []byte(request.Source), 0644)
// set up the arguments to send to the execute command
cmd := exec.Command("../lxc/execute", request.Language, srcfile, strings.Join(request.Args, "\n"))
// capture out/err
var stdout, stderr bytes.Buffer
cmd.Stdout = &stdout
cmd.Stderr = &stderr
err := cmd.Run()
// get the executing version of the language
execlang := request.Language
switch execlang {
case "bf":
execlang = "brainfuck"
case "c++":
execlang = "cpp"
case "cs", "c#":
execlang = "csharp"
case "denojs", "denots":
execlang = "deno"
case "el", "elisp":
execlang = "emacs"
case "exs":
execlang = "elixir"
case "hs":
execlang = "haskell"
case "asm":
execlang = "nasm"
case "asm64":
execlang = "nasm64"
case "js", "javascript":
execlang = "node"
case "jl":
execlang = "julia"
case "python":
execlang = "python3"
case "ts":
execlang = "typescript"
}
// prepare response
outbound := Outbound{
Ran: err == nil,
Language: request.Language,
Version: "",
Output: strings.TrimSpace(stdout.String()),
}
// retrieve the language version
for _, lang := range languages {
if lang.Name == execlang {
outbound.Version = lang.Version
break
}
}
response, _ := json.Marshal(outbound)
res.Write(response)
}
func UpdateVersions() ([]Language, error) {
langs, err := GetVersions()
if err != nil {
return nil, err
}
return langs, nil
}
// get all the language and their current version
func GetVersions() ([]Language, error) {
var languages []Language
res, err := ExecVersionScript()
if err != nil {
return nil, err
}
info := strings.Split(res, "---")
for _, v := range info {
if len(v) < 2 {
continue
}
name, version := GetVersion(v)
languages = append(languages, Language{
Name: name,
Version: version,
})
}
return languages, nil
}
// run the script that retrieves all the language versions
func ExecVersionScript() (string, error) {
cmd := exec.Command("../lxc/versions")
var stdout bytes.Buffer
cmd.Stdout = &stdout
cmd.Stderr = &stdout
err := cmd.Run()
return strings.ToLower(stdout.String()), err
}
// return the language and its version
// most of the time it is easy to get the name and version
// but for some languages helper functions are used
func GetVersion(s string) (string, string) {
lines := strings.Split(s, "\n")
if lines[1] == "java" {
return "java", regexp.MustCompile("([0-9]+)").FindString(lines[2])
}
if lines[1] == "emacs" {
return "emacs", regexp.MustCompile("([0-9]+\\.[0-9]+)").FindString(lines[2])
}
return lines[1], regexp.MustCompile("([0-9]+\\.[0-9]+\\.[0-9]+)").FindString(s)
}

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api/package-lock.json generated Normal file
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"version": "2.1.1",
"resolved": "https://registry.npmjs.org/ms/-/ms-2.1.1.tgz",
"integrity": "sha512-tgp+dl5cGk28utYktBsrFqA7HKgrhgPsg6Z/EfhWI4gl1Hwq8B/GmY/0oXZ6nF8hDVesS/FpnYaD/kOWhYQvyg=="
}
}
},
"serve-static": {
"version": "1.14.1",
"resolved": "https://registry.npmjs.org/serve-static/-/serve-static-1.14.1.tgz",
"integrity": "sha512-JMrvUwE54emCYWlTI+hGrGv5I8dEwmco/00EvkzIIsR7MqrHonbD9pO2MOfFnpFntl7ecpZs+3mW+XbQZu9QCg==",
"requires": {
"encodeurl": "~1.0.2",
"escape-html": "~1.0.3",
"parseurl": "~1.3.3",
"send": "0.17.1"
}
},
"setprototypeof": {
"version": "1.1.1",
"resolved": "https://registry.npmjs.org/setprototypeof/-/setprototypeof-1.1.1.tgz",
"integrity": "sha512-JvdAWfbXeIGaZ9cILp38HntZSFSo3mWg6xGcJJsd+d4aRMOqauag1C63dJfDw7OaMYwEbHMOxEZ1lqVRYP2OAw=="
},
"statuses": {
"version": "1.5.0",
"resolved": "https://registry.npmjs.org/statuses/-/statuses-1.5.0.tgz",
"integrity": "sha1-Fhx9rBd2Wf2YEfQ3cfqZOBR4Yow="
},
"toidentifier": {
"version": "1.0.0",
"resolved": "https://registry.npmjs.org/toidentifier/-/toidentifier-1.0.0.tgz",
"integrity": "sha512-yaOH/Pk/VEhBWWTlhI+qXxDFXlejDGcQipMlyxda9nthulaxLZUNcUqFxokp0vcYnvteJln5FNQDRrxj3YcbVw=="
},
"type-is": {
"version": "1.6.18",
"resolved": "https://registry.npmjs.org/type-is/-/type-is-1.6.18.tgz",
"integrity": "sha512-TkRKr9sUTxEH8MdfuCSP7VizJyzRNMjj2J2do2Jr3Kym598JVdEksuzPQCnlFPW4ky9Q+iA+ma9BGm06XQBy8g==",
"requires": {
"media-typer": "0.3.0",
"mime-types": "~2.1.24"
}
},
"unpipe": {
"version": "1.0.0",
"resolved": "https://registry.npmjs.org/unpipe/-/unpipe-1.0.0.tgz",
"integrity": "sha1-sr9O6FFKrmFltIF4KdIbLvSZBOw="
},
"utils-merge": {
"version": "1.0.1",
"resolved": "https://registry.npmjs.org/utils-merge/-/utils-merge-1.0.1.tgz",
"integrity": "sha1-n5VxD1CiZ5R7LMwSR0HBAoQn5xM="
},
"validator": {
"version": "13.5.2",
"resolved": "https://registry.npmjs.org/validator/-/validator-13.5.2.tgz",
"integrity": "sha512-mD45p0rvHVBlY2Zuy3F3ESIe1h5X58GPfAtslBjY7EtTqGquZTj+VX/J4RnHWN8FKq0C9WRVt1oWAcytWRuYLQ=="
},
"vary": {
"version": "1.1.2",
"resolved": "https://registry.npmjs.org/vary/-/vary-1.1.2.tgz",
"integrity": "sha1-IpnwLG3tMNSllhsLn3RSShj2NPw="
}
}
}

16
api/package.json Normal file
View File

@ -0,0 +1,16 @@
{
"name": "api",
"version": "1.0.0",
"description": "",
"main": "index.js",
"scripts": {
"test": "echo \"Error: no test specified\" && exit 1"
},
"keywords": [],
"author": "",
"license": "ISC",
"dependencies": {
"express": "^4.17.1",
"express-validator": "^6.9.2"
}
}

79
api/src/index.js Normal file
View File

@ -0,0 +1,79 @@
const express = require('express');
const { execute } = require('../../shared/execute');
const { languages } = require('./languages');
const { checkSchema, validationResult } = require('express-validator');
const PORT = 2000;
const app = express();
app.use(express.json());
app.post(
'/execute',
checkSchema({
language: {
in: 'body',
notEmpty: {
errorMessage: 'No language supplied',
},
isString: {
errorMessage: 'Supplied language is not a string',
},
custom: {
options: value => value && languages.find(language => language.aliases.includes(value.toLowerCase())),
errorMessage: 'Supplied language is not supported by Piston',
},
},
source: {
in: 'body',
notEmpty: {
errorMessage: 'No source supplied',
},
isString: {
errorMessage: 'Supplied source is not a string',
},
},
args: {
in: 'body',
optional: true,
isArray: {
errorMessage: 'Supplied args is not an array',
},
},
stdin: {
in: 'body',
optional: true,
isString: {
errorMessage: 'Supplied stdin is not a string',
},
}
}),
async (req, res) => {
const errors = validationResult(req).array();
if (errors.length === 0) {
const language = languages.find(language =>
language.aliases.includes(req.body.language.toLowerCase())
);
const { stdout, stderr, output, ran } = await execute(language, req.body.source, req.body.stdin, req.body.args);
res.status(200).json({
ran,
language: language.name,
version: language.version,
stdout,
stderr,
output,
});
} else {
res.status(400).json({
message: errors[0].msg,
});
}
},
);
app.get('/versions', (_, res) => res.json(languages));
app.listen(PORT, () => console.log(`Listening on port ${PORT}`));

39
api/src/languages.js Normal file
View File

@ -0,0 +1,39 @@
const { spawn } = require('child_process');
const languages = require('../../shared/languages.json');
{
const process = spawn(__dirname + '/../../lxc/versions');
let output = '';
process.stderr.on('data', chunk => output += chunk);
process.stdout.on('data', chunk => output += chunk);
process.on('exit', () => {
const sections = output.toLowerCase().split('---');
const versions = {};
for (const section of sections) {
const lines = section.trim().split('\n');
if (lines.length >= 2) {
const language = lines[0];
if (language === 'java') {
versions[language] = /\d+/.exec(lines[1])?.[0];
} else if (language === 'emacs') {
versions[language] = /\d+\.\d+/.exec(lines[1])?.[0];
} else {
versions[language] = /\d+\.\d+\.\d+/.exec(section)?.[0];
}
}
}
for (const language of languages) {
language.version = versions[language.name];
}
});
}
module.exports = {
languages,
};

2
api/start
View File

@ -1,3 +1,3 @@
#!/usr/bin/env bash
go run main.go $*
node src

32
cli/execute Executable file
View File

@ -0,0 +1,32 @@
#!/usr/bin/env node
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);
})();

130
lxc/execute
View File

@ -4,11 +4,7 @@ dir="$( cd "$( dirname "$0" )" && pwd )"
touch $dir/lockfile
if [ -z "$1" ]; then
echo "invalid args"
exit
fi
if [ -z "$2" ]; then
if [ -z "$1" ] || [ -z "$2" ]; then
echo "invalid args"
exit
fi
@ -18,13 +14,15 @@ epoch=$(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
echo $3 > $basepath$stdinpath
echo -n "${@:4}" > $basepath$argpath
# process incrementor
exec 200>$dir/lockfile
@ -40,116 +38,24 @@ else
fi
exec 200>&-
bin=
case "$lang" in
"awk")
bin=awk
;;
"bash")
bin=bash
;;
"brainfuck" | "bf")
bin=brainfuck
;;
"c")
bin=c
;;
"cpp" | "c++")
bin=cpp
;;
"csharp" | "cs" | "c#")
bin=csharp
;;
"d")
bin=d
;;
"elixir" | "exs")
bin=elixir
;;
"go")
bin=go
;;
"haskell" | "hs")
bin=haskell
;;
"java")
bin=java
;;
"jelly")
bin=jelly
;;
"julia" | "jl")
bin=julia
;;
"kotlin")
bin=kotlin
;;
"lua")
bin=lua
;;
"nasm" | "asm")
bin=nasm
;;
"nasm64" | "asm64")
bin=nasm64
;;
"nim")
bin=nim
;;
"node" | "js" | "javascript")
bin=node
;;
"deno" | "denojs" | "denots")
bin=deno
;;
"paradoc")
bin=paradoc
;;
"perl")
bin=perl
;;
"php")
bin=php
;;
"python2")
bin=python2
;;
"python3" | "python")
bin=python3
;;
"ruby")
bin=ruby
;;
"rust")
bin=rust
;;
"swift")
bin=swift
;;
"emacs" | "elisp" | "el")
bin=emacs
;;
"bash")
bin=bash
;;
"typescript" | "ts")
bin=typescript
;;
*)
echo "invalid language"
exit
esac
# runner
timeout -s KILL 10 \
timeout -s KILL 20 \
lxc-attach --clear-env -n piston -- \
/bin/bash -l -c "bash /exec/$bin $newinc $epoch 2>&1 | head -c 65536"
/bin/bash -l -c "runuser runner$newinc /exec/$lang $newinc $epoch"
# process janitor
lxc-attach --clear-env -n piston -- \
/bin/bash -l -c "\
for i in {1..100}; do pkill -u runner$newinc --signal SIGKILL; done ;\
find /tmp -user runner$newinc -exec /bin/rm -rf {} \;\
" > /dev/null 2>&1 &
/bin/bash -l -c "
for i in {1..100}
do
pkill -u runner$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

6
lxc/executors/awk
View File

@ -1,4 +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
runuser runner$1 -c "cd /tmp/$2 ; timeout -s KILL 3 awk -f code.awk < code.stdin"
timeout -s KILL 3 xargs -a args.args -d '\n' awk -f code.code < stdin.stdin

4
lxc/executors/bash
View File

@ -1,2 +1,4 @@
#!/bin/bash
cd /tmp/$2
runuser runner$1 -c "cd /tmp/$2 ; cat args.args | xargs -d '\n' timeout -s KILL 3 bash code.code"
xargs -a args.args -d '\n' timeout -s KILL 3 bash code.code < stdin.stdin

4
lxc/executors/brainfuck
View File

@ -1,2 +1,4 @@
#!/bin/bash
cd /tmp/$2
runuser runner$1 -c "cd /tmp/$2 ; cat args.args | xargs -d '\n' timeout -s KILL 3 brainfuck code.code"
timeout -s KILL 3 xargs -a args.args -d '\n' brainfuck code.code < stdin.stdin

6
lxc/executors/c
View File

@ -1,3 +1,5 @@
#!/usr/bin/bash
cd /tmp/$2
timeout -s KILL 10 gcc -std=c11 -o binary -x c code.code
runuser runner$1 -c "cd /tmp/$2 ; cat args.args | xargs -d '\n' timeout -s KILL 3 ./binary"
gcc -std=c11 -o binary -x c code.code
timeout -s KILL 3 xargs -a args.args ./binary < stdin.stdin

6
lxc/executors/cpp
View File

@ -1,3 +1,5 @@
#!/bin/bash
cd /tmp/$2
timeout -s KILL 10 g++ -std=c++17 -o binary -x c++ code.code
runuser runner$1 -c "cd /tmp/$2 ; cat args.args | xargs -d '\n' timeout -s KILL 3 ./binary"
g++ -std=c++17 -o binary -x c++ code.code
timeout -s KILL 3 xargs -a args.args -d '\n' ./binary < stdin.stdin

6
lxc/executors/csharp
View File

@ -1,3 +1,5 @@
#!/bin/bash
cd /tmp/$2
timeout -s KILL 10 mcs $(echo code.code | sed 's/\///') -nowarn:0219 -out:binary
runuser runner$1 -c "cd /tmp/$2 ; cat args.args | xargs -d '\n' timeout -s KILL 3 mono binary"
mcs $(echo code.code | sed 's/\///') -nowarn:0219 -out:binary
timeout -s KILL 3 xargs -a args.args -d '\n' mono binary < stdin.stdin

4
lxc/executors/d
View File

@ -1,4 +1,6 @@
#!/bin/bash
cd /tmp/$2
cp code.code code.d
timeout -s KILL 10 dmd code.d
runuser runner$1 -c "cd /tmp/$2 ; cat args.args | xargs -d '\n' timeout -s KILL 3 ./code"
xtimeout -s KILL 3 args -a args.args -d '\n' ./code

9
lxc/executors/deno
View File

@ -1,7 +1,4 @@
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"
else
runuser runner$1 -c "cd /tmp/$2 ; cat args.args | xargs -d '\n' timeout -s KILL 3 deno run code.code"
fi
cd /tmp/$2
timeout -s KILL 3 xargs -a args.args -d '\n' deno run code.code < stdin.stdin

11
lxc/executors/elixir
View File

@ -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"
fi
export LC_ALL="en_US.UTF-8"
cd /tmp/$2
timeout -s KILL 3 xargs -a args.args -d '\n' elixir code.code < stdin.stdin

9
lxc/executors/emacs
View File

@ -1,7 +1,4 @@
cd /tmp/$2
#!/bin/bash
if [[ -z $(grep '[^[:space:]]' args.args) ]]; then
runuser -l runner$1 -c "cd /tmp/$2 ; timeout -s KILL 3 emacs -Q --script code.code"
else
runuser -l runner$1 -c "cd /tmp/$2 ; cat args.args | xargs -d '\n' timeout -s KILL 3 emacs -Q --script code.code"
fi
cd /tmp/$2
timeout -s KILL 3 xargs -a args.args -d '\n' emacs -Q --script code.code < stdin.stdin

8
lxc/executors/go
View File

@ -1,6 +1,6 @@
#!/bin/bash
cd /tmp/$2
cp code.code interim.go
file="interim.go"
timeout -s KILL 10 go build $file
file=${file%%.*}
runuser runner$1 -c "cd /tmp/$2 ; cat args.args | xargs -d '\n' timeout -s KILL 3 ./$file"
go build interim.go
timeout -s KILL 3 xargs -a args.args -d '\n' ./interim < stdin.stdin

8
lxc/executors/haskell
View File

@ -1,4 +1,6 @@
#!/bin/bash
cd /tmp/$2
mv code.code code.hs
timeout -s KILL 10 ghc -dynamic -o binary code.hs > /dev/null 2>&1
runuser runner$1 -c "cd /tmp/$2 ; cat args.args | xargs -d '\n' timeout -s KILL 3 ./binary"
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

11
lxc/executors/java
View File

@ -1,6 +1,7 @@
#!/bin/bash
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
timeout -s KILL 10 javac $name.java
runuser runner$1 -c "cd /tmp/$2 ; cat args.args | xargs -d '\n' timeout -s KILL 3 java $name"
name=$(grep -Po "(?<=\n|\A)\s*(public\s+)?(class|interface)\s+\K([^\/\\\\\n\s{]+)" code.code)
cp code.code $name.java
javac $name.java
timeout -s KILL 3 xargs -a args.args -d '\n' java $name < stdin.stdin

4
lxc/executors/jelly
View File

@ -1,2 +1,4 @@
#!/bin/bash
cd /tmp/$2
runuser runner$1 -c "cd /tmp/$2 ; cat args.args | xargs -d '\n' timeout -s KILL 3 jelly fu code.code"
timeout -s KILL 3 xargs -a args.args -d '\n' jelly fu code.code < stdin.stdin

4
lxc/executors/julia
View File

@ -1,2 +1,4 @@
#!/bin/bash
cd /tmp/$2
runuser runner$1 -c "cd /tmp/$2 ; cat args.args | xargs -d '\n' timeout -s KILL 3 julia code.code"
timeout -s KILL 3 xargs -a args.args -d '\n' julia code.code < stdin.stdin

6
lxc/executors/kotlin
View File

@ -1,4 +1,6 @@
#!/bin/bash
cd /tmp/$2
cp code.code code.kt
timeout -s KILL 10 kotlinc code.kt -include-runtime -d code.jar
runuser runner$1 -c "cd /tmp/$2 ; cat args.args | xargs -d '\n' timeout -s KILL 3 java -jar code.jar"
kotlinc code.kt -include-runtime -d code.jar
timeout -s KILL 3 xargs -a args.args -d '\n' java -jar code.jar < stdin.stdin

4
lxc/executors/lua
View File

@ -1,2 +1,4 @@
#!/bin/bash
cd /tmp/$2
runuser runner$1 -c "cd /tmp/$2 ; cat args.args | xargs -d '\n' timeout -s KILL 3 lua code.code"
timeout -s KILL 3 xargs -a args.args -d '\n' lua code.code < stdin.stdin

8
lxc/executors/nasm
View File

@ -1,4 +1,6 @@
#!/bin/bash
cd /tmp/$2
timeout -s KILL 10 nasm -f elf32 -o binary.o code.code
timeout -s KILL 10 ld -m elf_i386 binary.o -o binary
runuser runner$1 -c "cd /tmp/$2 ; cat args.args | xargs -d '\n' timeout -s KILL 3 ./binary"
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

8
lxc/executors/nasm64
View File

@ -1,4 +1,6 @@
#!/bin/bash
cd /tmp/$2
timeout -s KILL 10 nasm -f elf64 -o binary.o code.code
timeout -s KILL 10 ld -m elf_x86_64 binary.o -o binary
runuser runner$1 -c "cd /tmp/$2 ; cat args.args | xargs -d '\n' timeout -s KILL 3 ./binary"
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

4
lxc/executors/nim
View File

@ -1,4 +0,0 @@
cd /tmp/$2
timeout -s KILL 10 nim --hints:off c code.code
runuser runner$1 -c "cd /tmp/$2 ; cat args.args | xargs -d '\n' timeout -s KILL 3 ./code"

9
lxc/executors/node
View File

@ -1,7 +1,4 @@
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"
else
runuser runner$1 -c "cd /tmp/$2 ; cat args.args | xargs -d '\n' timeout -s KILL 3 node code.code"
fi
cd /tmp/$2
timeout -s KILL 3 xargs -a args.args -d '\n' node code.code < stdin.stdin

5
lxc/executors/paradoc
View File

@ -1,2 +1,5 @@
#!/bin/bash
cd /tmp/$2
runuser runner$1 -c "cd /tmp/$2 ; timeout -s KILL 3 python3 -m paradoc code.code <<< args.args"
export PYTHONPATH=$PYTHONPATH:/opt/paradoc
timeout -s KILL 3 python3.8 -m paradoc code.code < args.args

4
lxc/executors/perl
View File

@ -1,2 +1,4 @@
#!/bin/bash
cd /tmp/$2
runuser runner$1 -c "cd /tmp/$2 ; cat args.args | xargs -d '\n' timeout -s KILL 3 perl code.code"
timeout -s KILL 3 xargs -a args.args -d '\n' perl code.code < stdin.stdin

4
lxc/executors/php
View File

@ -1,2 +1,4 @@
#!/bin/bash
cd /tmp/$2
runuser runner$1 -c "cd /tmp/$2 ; cat args.args | xargs -d '\n' timeout -s KILL 3 php code.code"
timeout -s KILL 3 xargs -a args.args -d '\n' php code.code < stdin.stdin

4
lxc/executors/python2
View File

@ -1,2 +1,4 @@
#!/bin/bash
cd /tmp/$2
runuser runner$1 -c "cd /tmp/$2 ; cat args.args | xargs -d '\n' timeout -s KILL 3 python code.code"
timeout -s KILL 3 xargs -a args.args -d '\n' python code.code < stdin.stdin

4
lxc/executors/python3
View File

@ -1,2 +1,4 @@
#!/bin/bash
cd /tmp/$2
runuser runner$1 -c "cd /tmp/$2 ; cat args.args | xargs -d '\n' timeout -s KILL 3 python3.8 code.code"
timeout -s KILL 3 xargs -a args.args -d '\n' python3.8 code.code < stdin.stdin

4
lxc/executors/ruby
View File

@ -1,2 +1,4 @@
#!/bin/bash
cd /tmp/$2
runuser runner$1 -c "cd /tmp/$2 ; cat args.args | xargs -d '\n' timeout -s KILL 3 ruby code.code"
timeout -s KILL 3 xargs -a args.args -d '\n' ruby code.code < stdin.stdin

6
lxc/executors/rust
View File

@ -1,3 +1,5 @@
#!/bin/bash
cd /tmp/$2
timeout -s KILL 10 rustc -o binary code.code
runuser runner$1 -c "cd /tmp/$2 ; cat args.args | xargs -d '\n' timeout -s KILL 3 ./binary"
rustc -o binary code.code
timeout -s KILL 3 xargs -a args.args -d '\n' ./binary < stdin.stdin

4
lxc/executors/swift
View File

@ -1,2 +1,4 @@
#!/bin/bash
cd /tmp/$2
runuser runner$1 -c "cd /tmp/$2 ; cat args.args | xargs -d '\n' timeout -s KILL 3 swift code.code"
timeout -s KILL 3 xargs -a args.args -d '\n' swift code.code < stdin.stdin

8
lxc/executors/typescript
View File

@ -1,6 +1,8 @@
#!/bin/bash
cd /tmp/$2
mv code.code interim.ts
timeout -s KILL 10 tsc interim.ts
rm interim.ts
tsc interim.ts
rm -f interim.ts
mv interim.js code.code
runuser runner$1 -c "cd /tmp/$2 ; cat args.args | xargs -d '\n' timeout -s KILL 3 node code.code"
timeout -s KILL 3 xargs -a args.args -d '\n' node code.code < stdin.stdin

2
lxc/start
View File

@ -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

108
lxc/test_all_lxc
View File

@ -1,57 +1,57 @@
#!/usr/bin/env bash
cd tests
echo 'testing awk'
../execute awk test.awk
echo 'testing c'
../execute c test.c
echo 'testing cpp'
../execute cpp test.cpp
echo 'testing cs'
../execute cs test.cs
echo 'testing d'
../execute d test.d
echo 'testing deno ts'
../execute deno testdeno.ts
echo 'testing elisp'
../execute elisp test.el
echo 'testing elixir'
../execute exs test.exs
echo 'testing go'
../execute go test.go
echo 'testing haskell'
../execute haskell test.hs
echo 'testing java'
../execute java test.java
echo 'testing jl'
../execute jl test.jl
echo 'testing js'
../execute js test.js
echo 'testing kotlin'
../execute kotlin test.kt
echo 'testing asm 32 bit'
../execute asm test.nasm
echo 'testing asm 64 bit'
../execute asm64 test64.nasm
echo 'testing nim'
../execute nim test.nim
echo 'testing php'
../execute php test.php
echo 'testing perl'
../execute perl test.pl
echo 'testing ruby'
../execute ruby test.rb
echo 'testing rust'
../execute rust test.rs
echo 'testing bash'
../execute bash test.sh
echo 'testing swift'
../execute swift test.swift
echo 'testing typescript'
../execute typescript test.ts
echo 'testing python2'
../execute python2 test2.py
echo 'testing python3'
../execute python3 test3.py
echo 'testing paradoc'
../execute python3 test_paradoc.py
echo -n 'testing awk = '
../../cli/execute awk awk.awk
echo -n 'testing bash = '
../../cli/execute bash bash.sh
echo -n 'testing c = '
../../cli/execute c c.c
echo -n 'testing cpp = '
../../cli/execute cpp cpp.cpp
echo -n 'testing csharp = '
../../cli/execute csharp csharp.cs
echo -n 'testing d = '
../../cli/execute d test.d
echo -n 'testing deno = '
../../cli/execute deno deno.ts
echo -n 'testing elixir = '
../../cli/execute elixir elixir.exs
echo -n 'testing emacs = '
../../cli/execute emacs emacs.el
echo -n 'testing go = '
../../cli/execute go go.go
echo -n 'testing haskell = '
../../cli/execute haskell haskell.hs
echo -n 'testing java = '
../../cli/execute java java.java
echo -n 'testing jelly = '
../../cli/execute jelly jelly.jelly good
echo -n 'testing julia = '
../../cli/execute julia julia.jl
echo -n 'testing kotlin = '
../../cli/execute kotlin kotlin.kt
echo -n 'testing nasm 32 bit = '
../../cli/execute nasm nasm.nasm
echo -n 'testing nasm 64 bit = '
../../cli/execute nasm64 nasm64.nasm
echo -n 'testing node = '
../../cli/execute node node.js
echo -n 'testing paradoc = '
../../cli/execute bash paradoc.sh
echo -n 'testing perl = '
../../cli/execute perl perl.pl
echo -n 'testing php = '
../../cli/execute php php.php
echo -n 'testing python2 = '
../../cli/execute python2 python2.py
echo -n 'testing python3 = '
../../cli/execute python3 python3.py
echo -n 'testing ruby = '
../../cli/execute ruby ruby.rb
echo -n 'testing rust = '
../../cli/execute rust rust.rs
echo -n 'testing swift = '
../../cli/execute swift swift.swift
echo -n 'testing typescript = '
../../cli/execute typescript typescript.ts

1
lxc/tests/awk.awk Normal file
View File

@ -0,0 +1 @@
{ print "good" }

0
lxc/tests/test.sh → lxc/tests/bash.sh
View File

0
lxc/tests/test.c → lxc/tests/c.c
View File

0
lxc/tests/test.cpp → lxc/tests/cpp.cpp
View File

0
lxc/tests/test.cs → lxc/tests/csharp.cs
View File

0
lxc/tests/testdeno.ts → lxc/tests/deno.ts
View File

0
lxc/tests/test.exs → lxc/tests/elixir.exs
View File

0
lxc/tests/test.el → lxc/tests/emacs.el
View File

0
lxc/tests/test.go → lxc/tests/go.go
View File

0
lxc/tests/test.hs → lxc/tests/haskell.hs
View File

0
lxc/tests/test.java → lxc/tests/java.java
View File

1
lxc/tests/jelly.jelly Normal file
View File

@ -0,0 +1 @@
³

0
lxc/tests/test.jl → lxc/tests/julia.jl
View File

3
lxc/tests/kotlin.kt Normal file
View File

@ -0,0 +1,3 @@
fun main() {
println("good")
}

0
lxc/tests/test.nasm → lxc/tests/nasm.nasm
View File

18
lxc/tests/nasm64.nasm Normal file
View File

@ -0,0 +1,18 @@
SECTION .data
good: db "good", 0x0
txtlen: equ $ - good
SECTION .text
GLOBAL _start
_start:
;sys_write
mov rax, 1
mov rdi, 1
mov rsi, good
mov rdx, txtlen
syscall
;sys_exit
mov rax, 60
mov rdi, 0
syscall

0
lxc/tests/test.nim → lxc/tests/nim.nim
View File

0
lxc/tests/test.js → lxc/tests/node.js
View File

11
lxc/tests/paradoc.sh Normal file
View File

@ -0,0 +1,11 @@
#!/usr/bin/env bash
# add paradoc module to python python
export PYTHONPATH=$PYTHONPATH:/opt/paradoc
# file for test code
test_code=/tmp/paradoc.test
# save test code to file
echo -n iP>$test_code
# pass param to paradoc module and have it print it
echo good | python3.8 -m paradoc $test_code
# clean test code
rm -f $test_code

0
lxc/tests/test.pl → lxc/tests/perl.pl
View File

0
lxc/tests/test.php → lxc/tests/php.php
View File

0
lxc/tests/test2.py → lxc/tests/python2.py
View File

0
lxc/tests/test3.py → lxc/tests/python3.py
View File

0
lxc/tests/test.rb → lxc/tests/ruby.rb
View File

0
lxc/tests/test.rs → lxc/tests/rust.rs
View File

0
lxc/tests/test.swift → lxc/tests/swift.swift
View File

3
lxc/tests/test.awk
View File

@ -1,3 +0,0 @@
good
___code___
{ print }

3
lxc/tests/test.kt
View File

@ -1,3 +0,0 @@
fun main(args: Array<String>) {
println("good")
}

18
lxc/tests/test64.nasm
View File

@ -1,18 +0,0 @@
SECTION .data
good: db "good", 0x0a, 0x0
txtlen: equ $ - good
SECTION .text
GLOBAL _start
_start:
;sys_write
mov rax, 1
mov rdi, 1
mov rsi, good
mov rdx, txtlen
syscall
;sys_exit
mov rax, 60
mov rdi, 0
syscall

5
lxc/tests/test_paradoc.py
View File

@ -1,5 +0,0 @@
try:
import paradoc
print('good')
except:
pass

0
lxc/tests/test.ts → lxc/tests/typescript.ts
View File

12
lxc/versions
View File

@ -14,11 +14,11 @@ echo '1.0.0'
echo '---'
echo 'c'
lxc-attach --clear-env -n piston -- /bin/bash -l -c "gcc -v"
lxc-attach --clear-env -n piston -- /bin/bash -l -c "gcc --version"
echo '---'
echo 'cpp'
lxc-attach --clear-env -n piston -- /bin/bash -l -c "g++ -v"
lxc-attach --clear-env -n piston -- /bin/bash -l -c "g++ --version"
echo '---'
echo 'csharp'
@ -73,8 +73,8 @@ echo 'nasm'
lxc-attach --clear-env -n piston -- /bin/bash -l -c "nasm -version"
echo '---'
echo 'nim'
lxc-attach --clear-env -n piston -- /bin/bash -l -c "nim -v | head -n1"
echo 'nasm64'
lxc-attach --clear-env -n piston -- /bin/bash -l -c "nasm -version"
echo '---'
echo 'node'
@ -94,11 +94,11 @@ lxc-attach --clear-env -n piston -- /bin/bash -l -c "python -V"
echo '---'
echo 'python3'
lxc-attach --clear-env -n piston -- /bin/bash -l -c "python3 -V"
lxc-attach --clear-env -n piston -- /bin/bash -l -c "python3.8 -V"
echo '---'
echo 'paradoc'
lxc-attach --clear-env -n piston -- /bin/bash -l -c "python3 -m paradoc --version"
lxc-attach --clear-env -n piston -- /bin/bash -l -c "python3.8 -m paradoc --version"
echo '---'
echo 'ruby'

547
readme.md
View File

@ -1,348 +1,220 @@
## Piston
Piston is the underlying engine for running untrusted and possibly malicious
code that originates from EMKC contests and challenges. It's also used in the
Engineer Man Discord server via [I Run Code](https://github.com/engineer-man/piston-bot) bot as well as 1000+ other servers.
<h1 align="center">
<a href="https://github.com/engineer-man/piston"><img src="https://emkc.org/images/icon_circle_24.png" alt="engineer-man piston"></a>
Piston
</h1>
<h3 align="center">A high performance general purpose code execution engine.</h3>
<br>
<p align="center">
<a href="https://github.com/ArmynC/ArminC-AutoExec/commits/master">
<img src="https://img.shields.io/github/last-commit/engineer-man/piston.svg?style=for-the-badge&logo=github&logoColor=white"
alt="GitHub last commit">
<a href="https://github.com/engineer-man/piston/issues">
<img src="https://img.shields.io/github/issues/engineer-man/piston.svg?style=for-the-badge&logo=github&logoColor=white"
alt="GitHub issues">
<a href="https://github.com/engineer-man/piston/pulls">
<img src="https://img.shields.io/github/issues-pr-raw/engineer-man/piston.svg?style=for-the-badge&logo=github&logoColor=white"
alt="GitHub pull requests">
</p>
---
<h4 align="center">
<a href="#About">About</a> •
<a href="#Public-API">Public API</a> •
<a href="#Getting-Started">Getting Started</a> •
<a href="#Usage">Usage</a> •
<a href="#Supported-Languages">Supported Languages</a> •
<a href="#Principle-of-Operation">Principles</a> •
<a href="#Security">Security</a> •
<a href="#License">License</a>
</h4>
---
<br>
# About
<h4>
Piston is a high performance general purpose code execution engine. It excels at running untrusted and
possibly malicious code without fear from any harmful effects.
</h4>
<br>
It's used in numerous places including:
* [EMKC Challenges](https://emkc.org/challenges),
* [EMKC Weekly Contests](https://emkc.org/contests),
* [Engineer Man Discord Server](https://discord.gg/engineerman),
* [I Run Code (Discord Bot)](https://github.com/engineer-man/piston-bot) bot as well as 1300+ other servers
and 100+ direct integrations.
To get it in your own server, go here: https://emkc.org/run.
#### Use Public API (new)
Requires no installation and you can use it immediately. Reference the API Usage section below to learn
about the request format but rather than using the local URLs, use the following URLs:
- `GET` `https://emkc.org/api/v1/piston/versions`
- `POST` `https://emkc.org/api/v1/piston/execute`
<br>
Important Note: The Piston API is rate limited to 5 requests per second
# Public API
- Requires no installation and you can use it immediately.
- Reference the Versions/Execute sections below to learn about the request and response formats.
<br>
When using the public Piston API, use the base URL:
#### Installation
```
# clone and enter repo
git clone https://github.com/engineer-man/piston
cd piston/lxc
https://emkc.org/api/v1/piston
```
# install dependencies
#### GET
```
https://emkc.org/api/v1/piston/versions
```
#### POST
```
https://emkc.org/api/v1/piston/execute
```
> Important Note: The Piston API is rate limited to 5 requests per second. If you have a need for more requests than that
and it's for a good cause, please reach out to me (EngineerMan#0001) on [Discord](https://discord.gg/engineerman)
so we can discuss potentially getting you an unlimited key.
<br>
# Getting Started
### Host System Package Dependencies
* NodeJS
* lxc
* libvirt
<br>
If your OS is not documented below, please open pull requests with the correct commands for your OS.
<details>
<summary><span style="font-size:1.43em;">CentOS / RHEL</span></summary>
```sh
curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.37.2/install.sh | bash
nvm install --lts
nvm use --lts
# centos:
yum install -y epel-release
yum install -y lxc lxc-templates debootstrap libvirt
systemctl start libvirtd
```
</details>
# ubuntu server 18.04:
apt install lxc lxc-templates debootstrap libvirt0
<details>
<summary><span style="font-size:1.43em;">Ubuntu (18.04)</span></summary>
# arch:
sudo pacman -S lxc libvirt unzip
```sh
curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.37.2/install.sh | bash
nvm install --lts
nvm use --lts
# everything else:
# not documented, please open pull requests with commands for debian/arch/macos
apt install -y lxc lxc-templates debootstrap libvirt0
```
</details>
# create and start container
lxc-create -t download -n piston -- --dist ubuntu --release bionic --arch amd64
./start
<details>
<summary><span style="font-size:1.43em;">Arch Linux</span></summary>
# open a shell to the container
./shell
```sh
curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.37.2/install.sh | bash
nvm install --lts
nvm use --lts
# install all necessary piston dependencies
echo 'source /opt/.profile' >> /opt/.bashrc
echo 'export HOME=/opt' >> /opt/.profile
echo 'export TERM=linux' >> /opt/.profile
echo 'export PATH=$PATH:/opt/.local/bin' >> /opt/.profile
export HOME=/opt
export TERM=linux
sed -i 's/\/root/\/opt/' /etc/passwd
sed -i \
's/http:\/\/archive.ubuntu.com\/ubuntu/http:\/\/mirror.math.princeton.edu\/pub\/ubuntu/' \
/etc/apt/sources.list
apt-get update
apt-get install -y \
nano wget build-essential pkg-config libxml2-dev \
libsqlite3-dev mono-complete curl cmake libpython2.7-dev \
ruby libtinfo-dev unzip
pacman -S lxc libvirt unzip
```
</details>
# install python2
# final binary: /opt/python2/Python-2.7.17/python
# get version: /opt/python2/Python-2.7.17/python -V
cd /opt && mkdir python2 && cd python2
wget https://www.python.org/ftp/python/2.7.17/Python-2.7.17.tar.xz
unxz Python-2.7.17.tar.xz
tar -xf Python-2.7.17.tar
cd Python-2.7.17
./configure
# open Modules/Setup and uncomment zlib line
make
echo 'export PATH=$PATH:/opt/python2/Python-2.7.17' >> /opt/.profile
source /opt/.profile
#### After system dependencies are installed, clone this repository:
# install python3
# final binary: /opt/python3/Python-3.8.2/python
# get version: /opt/python3/Python-3.8.2/python -V
cd /opt && mkdir python3 && cd python3
wget https://www.python.org/ftp/python/3.8.2/Python-3.8.2.tar.xz
unxz Python-3.8.2.tar.xz
tar -xf Python-3.8.2.tar
cd Python-3.8.2
./configure
make
ln -s python python3.8
echo 'export PATH=$PATH:/opt/python3/Python-3.8.2' >> /opt/.profile
source /opt/.profile
# install paradoc
# this is not a binary, it is a python module
# therefore it cannot be run directly as it requires python3 to be installed
cd /opt && mkdir paradoc && cd paradoc
git clone https://github.com/betaveros/paradoc.git
echo 'export PYTHONPATH=$PYTHONPATH:/opt/paradoc/paradoc' >> /opt/.profile
source /opt/.profile
# install node.js
# final binary: /opt/nodejs/node-v12.16.1-linux-x64/bin/node
# get version: /opt/nodejs/node-v12.16.1-linux-x64/bin/node -v
cd /opt && mkdir nodejs && cd nodejs
wget https://nodejs.org/dist/v12.16.1/node-v12.16.1-linux-x64.tar.xz
unxz node-v12.16.1-linux-x64.tar.xz
tar -xf node-v12.16.1-linux-x64.tar
echo 'export PATH=$PATH:/opt/nodejs/node-v12.16.1-linux-x64/bin' >> /opt/.profile
source /opt/.profile
# install typescript
# final binary: /opt/nodejs/node-v12.16.1-linux-x64/bin/tsc
# get version: /opt/nodejs/node-v12.16.1-linux-x64/bin/tsc -v
/opt/nodejs/node-v12.16.1-linux-x64/bin/npm i -g typescript
# install golang
# final binary: /opt/go/go/bin/go
# get version: /opt/go/go/bin/go version
cd /opt && mkdir go && cd go
wget https://dl.google.com/go/go1.14.1.linux-amd64.tar.gz
tar -xzf go1.14.1.linux-amd64.tar.gz
echo 'export PATH=$PATH:/opt/go/go/bin' >> /opt/.profile
echo 'export GOROOT=/opt/go/go' >> /opt/.profile
echo 'export GOCACHE=/tmp' >> /opt/.profile
source /opt/.profile
# install php
# final binary: /usr/local/bin/php
# get version: /usr/local/bin/php -v
cd /opt && mkdir php && cd php
wget https://www.php.net/distributions/php-7.4.4.tar.gz
tar -xzf php-7.4.4.tar.gz
cd php-7.4.4
./configure
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=$PATH:/opt/.cargo/bin' >> /opt/.profile
source /opt/.profile
# install swift
# final binary: /opt/swift/swift-5.1.5-RELEASE-ubuntu18.04/usr/bin/swift
# get version: /opt/swift/swift-5.1.5-RELEASE-ubuntu18.04/usr/bin/swift --version
cd /opt && mkdir swift && cd swift
wget https://swift.org/builds/swift-5.1.5-release/ubuntu1804/swift-5.1.5-RELEASE/swift-5.1.5-RELEASE-ubuntu18.04.tar.gz
tar -xzf swift-5.1.5-RELEASE-ubuntu18.04.tar.gz
echo 'export PATH=$PATH:/opt/swift/swift-5.1.5-RELEASE-ubuntu18.04/usr/bin' >> /opt/.profile
source /opt/.profile
# install nasm
# final binary: /opt/nasm/nasm-2.14.02/nasm
# get version: /opt/nasm/nasm-2.14.02/nasm -v
cd /opt && mkdir nasm && cd nasm
wget https://www.nasm.us/pub/nasm/releasebuilds/2.14.02/nasm-2.14.02.tar.gz
tar -xzf nasm-2.14.02.tar.gz
cd nasm-2.14.02
./configure
make
echo 'export PATH=$PATH:/opt/nasm/nasm-2.14.02' >> /opt/.profile
source /opt/.profile
# install java
# final binary: /opt/java/jdk-14/bin/java
# get version: /opt/java/jdk-14/bin/java -version
cd /opt && mkdir java && cd java
wget https://download.java.net/java/GA/jdk14/076bab302c7b4508975440c56f6cc26a/36/GPL/openjdk-14_linux-x64_bin.tar.gz
tar -xzf openjdk-14_linux-x64_bin.tar.gz
echo 'export PATH=$PATH:/opt/java/jdk-14/bin' >> /opt/.profile
source /opt/.profile
# install jelly
cd /opt && mkdir jelly && cd jelly
wget https://github.com/DennisMitchell/jellylanguage/archive/master.zip
unzip master.zip
cd jellylanguage-master
pip3.8 install .
# install julia
# final binary: /opt/julia/julia-1.5.0/bin/julia
# get version: /opt/julia/julia-1.5.0/bin/julia --version
cd /opt && mkdir julia && cd julia
wget https://julialang-s3.julialang.org/bin/linux/x64/1.5/julia-1.5.0-linux-x86_64.tar.gz
tar -xzf julia-1.5.0-linux-x86_64.tar.gz
echo 'export PATH=$PATH:/opt/julia/julia-1.5.0/bin' >> /opt/.profile
source /opt/.profile
# install kotlin
# final binary: /opt/kotlinc/bin/kotlinc
# get version: /opt/kotlinc/bin/kotlinc -version
cd /opt
wget https://github.com/JetBrains/kotlin/releases/download/v1.4.10/kotlin-compiler-1.4.10.zip
unzip kotlin-compiler-1.4.10.zip
rm kotlin-compiler-1.4.10.zip
echo 'export PATH=$PATH:/opt/kotlinc/bin' >> /opt/.profile
source /opt/.profile
# install elixir and erlang
# final binary: /opt/elixir/bin/elixir
# get version: /opt/elixir/bin/elixir --version
# erlang
cd /opt && mkdir erlang && cd erlang
wget http://erlang.org/download/otp_src_23.0.tar.gz
gunzip -c otp_src_23.0.tar.gz | tar xf -
cd otp_src_23.0 && ./configure
make
echo 'export PATH=$PATH:/opt/erlang/otp_src_23.0/bin' >> /opt/.profile
source /opt/.profile
# elixir
cd /opt && mkdir elixir && cd elixir
wget https://github.com/elixir-lang/elixir/releases/download/v1.10.3/Precompiled.zip
mkdir elixir-1.10.3 && unzip Precompiled.zip -d elixir-1.10.3/
echo 'export PATH=$PATH:/opt/elixir/elixir-1.10.3/bin' >> /opt/.profile
source /opt/.profile
# install emacs
# final binary: /opt/emacs/emacs-26.3/src/emacs
# get version: /opt/emacs/emacs-26.3/src/emacs --version
cd /opt && mkdir emacs && cd emacs
wget https://mirrors.ocf.berkeley.edu/gnu/emacs/emacs-26.3.tar.xz
tar -xf emacs-26.3.tar.xz
cd emacs-26.3
./configure --with-gnutls=no
make
echo 'export PATH=$PATH:/opt/emacs/emacs-26.3/src' >> /opt/.profile
source /opt/.profile
# install lua
# final binary: /opt/lua/lua54/src/lua
# get version: /opt/lua/lua54/src/lua -v
cd /opt && mkdir lua && cd lua
wget https://sourceforge.net/projects/luabinaries/files/5.4.0/Docs%20and%20Sources/lua-5.4.0_Sources.tar.gz/download
tar -xzf download
cd lua54
make
echo 'export PATH=$PATH:/opt/lua/lua54/src' >> /opt/.profile
source /opt/.profile
# install haskell
# final binary: /usr/bin/ghc
# get version: /usr/bin/ghc --version
apt install -y ghc
# install deno
# final binary: /opt/.deno/bin/deno
# get version: /opt/.deno/bin/deno --version
cd /opt && mkdir deno && cd deno
curl -fsSL https://deno.land/x/install/install.sh | sh
echo 'export DENO_INSTALL="/opt/.deno"' >> /opt/.profile
echo 'export PATH="$DENO_INSTALL/bin:$PATH"' >> /opt/.profile
source /opt/.profile
# install nim
# final binary: /opt/nim/bin/nim
# get version: /opt/nim/bin/nim -v
cd /opt && mkdir nim && cd nim
wget https://nim-lang.org/download/nim-1.4.0-linux_x64.tar.xz
unxz nim-1.4.0-linux_x64.tar.xz
tar -xf nim-1.4.0-linux_x64.tar
cd nim-1.4.0
./install.sh /opt
echo 'export PATH=$PATH:/opt/nim/bin' >> /opt/.profile
source /opt/.profile
# install d
# final binary: /opt/d/dmd2/linux/bin64/dmd
# get version: /opt/d/dmd2/linux/bin64/dmd --version
cd /opt && mkdir d && cd d
wget http://downloads.dlang.org/releases/2.x/2.095.0/dmd.2.095.0.linux.tar.xz
unxz dmd.2.095.0.linux.tar.xz
tar -xf dmd.2.095.0.linux.tar
echo 'export PATH=$PATH:/opt/d/dmd2/linux/bin64' >> /opt/.profile
source /opt/.profile
# create runnable users and apply limits
for i in {1..150}; do
useradd -M runner$i
usermod -d /tmp runner$i
echo "runner$i soft nproc 64" >> /etc/security/limits.conf
echo "runner$i hard nproc 64" >> /etc/security/limits.conf
echo "runner$i soft nofile 2048" >> /etc/security/limits.conf
echo "runner$i hard nofile 2048" >> /etc/security/limits.conf
done
# cleanup
rm -rf /home/ubuntu
chmod 777 /tmp
# leave container
exit
# optionally run tests
cd ../tests
./test_all_lxc
```sh
# clone and enter repo
git clone https://github.com/engineer-man/piston
cd piston/lxc
```
#### CLI Usage
- `lxc/execute [language] [file path] [arg]...`
#### Installation (simple)
- Coming soon.
#### Installation (advanced)
- See `var/install.txt` for how to create a new LXC container and install all of the required
software.
#### CLI Usage
- `cli/execute [language] [file path] [args]`
<br>
# Usage
### CLI
```sh
lxc/execute [language] [file path] [args]
```
### API
To use the API, it must first be started. Please note that if root is required to access
LXC then the API must also be running as root. To start the API, run the following:
#### API Usage
To use the API, it must first be started. To start the API, run the following:
```
cd api
./start
```
#### Base URLs
For your own local installation, use:
For your own local installation, the API is available at:
```
http://127.0.0.1:2000
```
When using the public Piston API, use:
```
https://emkc.org/api/v1/piston
```
#### Versions Endpoint
`GET /versions`
This endpoint takes no input and returns a JSON array of the currently installed languages.
Truncated response sample:
This endpoint will return the supported languages along with the current version and aliases. To execute
code for a particular language using the `/execute` endpoint, either the name or one of the aliases must
be provided.
```json
HTTP/1.1 200 OK
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"
}
]
```
#### Execution Endpoint
#### Execute Endpoint
`POST /execute`
This endpoint takes the following JSON payload and expects at least the language and source. If
source is not provided, a blank file is passed as the source.
This endpoint requests execution of some arbitrary code.
- `language` (**required**) The language to use for execution, must be a string and supported by Piston (see list below).
- `source` (**required**) The source code to execute, must be a string.
- `stdin` (*optional*) The text to pass as stdin to the program. Must be a string or left out of the request.
- `args` (*optional*) The arguments to pass to the program. Must be an array or left out of the request.
```json
{
"language": "js",
"source": "console.log(process.argv)",
"stdin": "",
"args": [
"1",
"2",
@ -350,58 +222,76 @@ source is not provided, a blank file is passed as the source.
]
}
```
A typical response when everything succeeds will be similar to the following:
A typical response upon successful execution will contain the `language`, `version`, `output` which
is a combination of both `stdout` and `stderr` but in chronological order according to program output,
as well as separate `stdout` and `stderr`.
```json
HTTP/1.1 200 OK
Content-Type: application/json
{
"ran": true,
"language": "js",
"version": "12.13.0",
"output": "[ '/usr/bin/node',\n '/tmp/code.code',\n '1',\n '2',\n '3' ]"
"output": "[ '/usr/bin/node',\n '/tmp/code.code',\n '1',\n '2',\n '3' ]",
"stdout": "[ '/usr/bin/node',\n '/tmp/code.code',\n '1',\n '2',\n '3' ]",
"stderr": ""
}
```
If an invalid language is supplied, a typical response will look like the following:
If a problem exists with the request, a `400` status code is returned and the reason in the `message` key.
```json
HTTP/1.1 400 Bad Request
Content-Type: application/json
{
"code": "unsupported_language",
"message": "whatever is not supported by Piston"
"message": "Supplied language is not supported by Piston"
}
```
#### Supported Languages
- awk
- bash
- c
- cpp
- csharp
- d
- deno
- elixir
- emacs
- go
- haskell
- java
- jelly
- julia
- kotlin
- nasm
- node
- perl
- php
- python2
- python3
- paradoc
- ruby
- rust
- swift
- typescript
<br>
#### Principle of Operation
Piston utilizes LXC as the primary mechanism for sandboxing. There is a small API written in Go which takes
# Supported Languages
`awk`,
`bash`,
`brainfuck`,
`c`,
`cpp`,
`csharp`,
`d`,
`deno`,
`elixir`,
`emacs`,
`elisp`,
`go`,
`haskell`,
`java`,
`jelly`,
`julia`,
`kotlin`,
`lua`,
`nasm`,
`node`,
`paradoc`,
`perl`,
`php`,
`python2`,
`python3`,
`ruby`,
`rust`,
`swift`,
`typescript`,
<br>
# Principle of Operation
Piston utilizes LXC as the primary mechanism for sandboxing. There is a small API written in Node which takes
in execution requests and executes them in the container. High level, the API writes
a temporary source and args file to `/tmp` and that gets mounted read-only along with the execution scripts into the container.
The source file is either ran or compiled and ran (in the case of languages like c, c++, c#, go, etc.).
#### Security
<br>
# Security
LXC provides a great deal of security out of the box in that it's separate from the system.
Piston takes additional steps to make it resistant to
various privilege escalation, denial-of-service, and resource saturation threats. These steps include:
@ -409,10 +299,13 @@ various privilege escalation, denial-of-service, and resource saturation threats
- Capping max processes at 64 (resists `:(){ :|: &}:;`, `while True: os.fork()`, etc.)
- Capping max files at 2048 (resists various file based attacks)
- Mounting all resources read-only (resists `sudo rm -rf --no-preserve-root /`)
- Cleaning up all temp space after each execution (resists out of drive space attacks)
- Running as a variety of unprivileged users
- Capping runtime execution at 3 seconds
- Capping stdout to 65536 characters (resists yes/no bombs and runaway output)
- SIGKILLing misbehaving code
#### License
<br>
# License
Piston is licensed under the MIT license.

57
shared/execute.js Normal file
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@ -0,0 +1,57 @@
const { writeFileSync, unlinkSync } = require('fs');
const { spawn } = require('child_process');
const OUTPUT_LIMIT = 65535;
function execute(language, source, stdin = '', args = []) {
return new Promise(resolve => {
const stamp = new Date().getTime();
const sourceFile = `/tmp/${stamp}.code`;
writeFileSync(sourceFile, source);
const process = spawn(__dirname + '/../lxc/execute', [
language.name,
sourceFile,
stdin,
args.join('\n'),
]);
let stdout = '';
let stderr = '';
let output = '';
process.stderr.on('data', chunk => {
if (stderr.length >= OUTPUT_LIMIT) return;
stderr += chunk;
output += chunk;
});
process.stdout.on('data', chunk => {
if (stdout.length >= OUTPUT_LIMIT) return;
stdout += chunk;
output += chunk;
});
process.on('exit', code => {
unlinkSync(sourceFile);
stderr = stderr.trim().substring(0, OUTPUT_LIMIT);
stdout = stdout.trim().substring(0, OUTPUT_LIMIT);
output = output.trim().substring(0, OUTPUT_LIMIT);
resolve({
stdout,
stderr,
output,
ran: code === 0,
});
});
});
}
module.exports = {
execute,
};

209
shared/languages.json Normal file
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@ -0,0 +1,209 @@
[
{
"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",
"cc",
"cxx"
]
},
{
"name": "d",
"aliases": [
"dlang",
"d"
]
},
{
"name": "deno",
"aliases": [
"deno",
"denojs",
"denots"
]
},
{
"name": "ruby",
"aliases": [
"duby",
"rb",
"ruby"
]
},
{
"name": "emacs",
"aliases": [
"el",
"elisp",
"emacs"
]
},
{
"name": "elixir",
"aliases": [
"elixir",
"exs"
]
},
{
"name": "haskell",
"aliases": [
"haskell",
"hs"
]
},
{
"name": "go",
"aliases": [
"go",
"golang"
]
},
{
"name": "java",
"aliases": [
"java"
]
},
{
"name": "node",
"aliases": [
"javascript",
"js",
"node",
"node.js"
]
},
{
"name": "jelly",
"aliases": [
"jelly"
]
},
{
"name": "julia",
"aliases": [
"jl",
"julia"
]
},
{
"name": "kotlin",
"aliases": [
"kotlin",
"kt"
]
},
{
"name": "lua",
"aliases": [
"lua"
]
},
{
"name": "paradoc",
"aliases": [
"paradoc"
]
},
{
"name": "perl",
"aliases": [
"perl",
"pl"
]
},
{
"name": "php",
"aliases": [
"php",
"php3",
"php4",
"php5"
]
},
{
"name": "python3",
"aliases": [
"py",
"py3",
"python",
"python3"
]
},
{
"name": "python2",
"aliases": [
"python2",
"py2"
]
},
{
"name": "rust",
"aliases": [
"rs",
"rust"
]
},
{
"name": "swift",
"aliases": [
"swift"
]
},
{
"name": "typescript",
"aliases": [
"ts",
"typescript"
]
}
]

262
var/install.txt Normal file
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@ -0,0 +1,262 @@
# create and start container
lxc-create -t download -n piston -- --dist ubuntu --release bionic --arch amd64
./start
# open a shell to the container
./shell
# install all necessary piston dependencies
echo 'source /opt/.profile' >> /opt/.bashrc
echo 'export HOME=/opt' >> /opt/.profile
echo 'export TERM=linux' >> /opt/.profile
echo 'export PATH=$PATH:/opt/.local/bin' >> /opt/.profile
export HOME=/opt
export TERM=linux
sed -i 's/\/root/\/opt/' /etc/passwd
sed -i \
's/http:\/\/archive.ubuntu.com\/ubuntu/http:\/\/mirror.math.princeton.edu\/pub\/ubuntu/' \
/etc/apt/sources.list
apt-get update
apt-get install -y \
nano wget build-essential pkg-config libxml2-dev \
libsqlite3-dev mono-complete curl cmake libpython2.7-dev \
ruby libtinfo-dev unzip git openssl libssl-dev
# install python2
# final binary: /opt/python2/Python-2.7.17/python
# get version: /opt/python2/Python-2.7.17/python -V
cd /opt && mkdir python2 && cd python2
wget https://www.python.org/ftp/python/2.7.17/Python-2.7.17.tar.xz
unxz Python-2.7.17.tar.xz
tar -xf Python-2.7.17.tar
cd Python-2.7.17
./configure
# open Modules/Setup and uncomment zlib line
make
echo 'export PATH=$PATH:/opt/python2/Python-2.7.17' >> /opt/.profile
source /opt/.profile
# install python3
# final binary: /opt/python3/Python-3.8.2/python
# get version: /opt/python3/Python-3.8.2/python -V
cd /opt && mkdir python3 && cd python3
wget https://www.python.org/ftp/python/3.8.2/Python-3.8.2.tar.xz
unxz Python-3.8.2.tar.xz
tar -xf Python-3.8.2.tar
cd Python-3.8.2
./configure
make
ln -s python python3.8
echo 'export PATH=$PATH:/opt/python3/Python-3.8.2' >> /opt/.profile
source /opt/.profile
# install paradoc
# this is not a binary, it is a python module
# therefore it cannot be run directly as it requires python3 to be installed
cd /opt && mkdir paradoc && cd paradoc
git clone https://github.com/betaveros/paradoc.git
# install node.js
# final binary: /opt/nodejs/node-v12.16.1-linux-x64/bin/node
# get version: /opt/nodejs/node-v12.16.1-linux-x64/bin/node -v
cd /opt && mkdir nodejs && cd nodejs
wget https://nodejs.org/dist/v12.16.1/node-v12.16.1-linux-x64.tar.xz
unxz node-v12.16.1-linux-x64.tar.xz
tar -xf node-v12.16.1-linux-x64.tar
echo 'export PATH=$PATH:/opt/nodejs/node-v12.16.1-linux-x64/bin' >> /opt/.profile
source /opt/.profile
# install typescript
# final binary: /opt/nodejs/node-v12.16.1-linux-x64/bin/tsc
# get version: /opt/nodejs/node-v12.16.1-linux-x64/bin/tsc -v
/opt/nodejs/node-v12.16.1-linux-x64/bin/npm i -g typescript
# install golang
# final binary: /opt/go/go/bin/go
# get version: /opt/go/go/bin/go version
cd /opt && mkdir go && cd go
wget https://dl.google.com/go/go1.14.1.linux-amd64.tar.gz
tar -xzf go1.14.1.linux-amd64.tar.gz
echo 'export PATH=$PATH:/opt/go/go/bin' >> /opt/.profile
echo 'export GOROOT=/opt/go/go' >> /opt/.profile
echo 'export GOCACHE=/tmp' >> /opt/.profile
source /opt/.profile
# install php
# final binary: /usr/local/bin/php
# get version: /usr/local/bin/php -v
cd /opt && mkdir php && cd php
wget https://www.php.net/distributions/php-7.4.4.tar.gz
tar -xzf php-7.4.4.tar.gz
cd php-7.4.4
./configure
make
make install
# install rust
# final binary: /usr/local/bin/rustc
# get version: /usr/local/bin/rustc --version
cd /opt && mkdir rust && cd rust
wget https://static.rust-lang.org/dist/rust-1.49.0-x86_64-unknown-linux-gnu.tar.gz
tar -xzf rust-1.49.0-x86_64-unknown-linux-gnu.tar.gz
cd rust-1.49.0-x86_64-unknown-linux-gnu
./install.sh
# install swift
# final binary: /opt/swift/swift-5.1.5-RELEASE-ubuntu18.04/usr/bin/swift
# get version: /opt/swift/swift-5.1.5-RELEASE-ubuntu18.04/usr/bin/swift --version
cd /opt && mkdir swift && cd swift
wget https://swift.org/builds/swift-5.1.5-release/ubuntu1804/swift-5.1.5-RELEASE/swift-5.1.5-RELEASE-ubuntu18.04.tar.gz
tar -xzf swift-5.1.5-RELEASE-ubuntu18.04.tar.gz
echo 'export PATH=$PATH:/opt/swift/swift-5.1.5-RELEASE-ubuntu18.04/usr/bin' >> /opt/.profile
source /opt/.profile
# install nasm
# final binary: /opt/nasm/nasm-2.14.02/nasm
# get version: /opt/nasm/nasm-2.14.02/nasm -v
cd /opt && mkdir nasm && cd nasm
wget https://www.nasm.us/pub/nasm/releasebuilds/2.14.02/nasm-2.14.02.tar.gz
tar -xzf nasm-2.14.02.tar.gz
cd nasm-2.14.02
./configure
make
echo 'export PATH=$PATH:/opt/nasm/nasm-2.14.02' >> /opt/.profile
source /opt/.profile
# install java
# final binary: /opt/java/jdk-14/bin/java
# get version: /opt/java/jdk-14/bin/java -version
cd /opt && mkdir java && cd java
wget https://download.java.net/java/GA/jdk14/076bab302c7b4508975440c56f6cc26a/36/GPL/openjdk-14_linux-x64_bin.tar.gz
tar -xzf openjdk-14_linux-x64_bin.tar.gz
echo 'export PATH=$PATH:/opt/java/jdk-14/bin' >> /opt/.profile
source /opt/.profile
# install jelly
cd /opt && mkdir jelly && cd jelly
wget https://github.com/DennisMitchell/jellylanguage/archive/master.zip
unzip master.zip
cd jellylanguage-master
python3.8 -m pip install .
sed -i 's/\/usr\/local\/bin\/python3.8/\/opt\/python3\/Python-3.8.2\/python3.8/' /usr/local/bin/jelly
# install julia
# final binary: /opt/julia/julia-1.5.0/bin/julia
# get version: /opt/julia/julia-1.5.0/bin/julia --version
cd /opt && mkdir julia && cd julia
wget https://julialang-s3.julialang.org/bin/linux/x64/1.5/julia-1.5.0-linux-x86_64.tar.gz
tar -xzf julia-1.5.0-linux-x86_64.tar.gz
echo 'export PATH=$PATH:/opt/julia/julia-1.5.0/bin' >> /opt/.profile
source /opt/.profile
# install kotlin
# final binary: /opt/kotlinc/bin/kotlinc
# get version: /opt/kotlinc/bin/kotlinc -version
cd /opt
wget https://github.com/JetBrains/kotlin/releases/download/v1.4.10/kotlin-compiler-1.4.10.zip
unzip kotlin-compiler-1.4.10.zip
rm kotlin-compiler-1.4.10.zip
echo 'export PATH=$PATH:/opt/kotlinc/bin' >> /opt/.profile
source /opt/.profile
# install elixir and erlang
# final binary: /opt/elixir/bin/elixir
# get version: /opt/elixir/bin/elixir --version
# erlang
cd /opt && mkdir erlang && cd erlang
wget http://erlang.org/download/otp_src_23.0.tar.gz
gunzip -c otp_src_23.0.tar.gz | tar xf -
cd otp_src_23.0 && ./configure
make
echo 'export PATH=$PATH:/opt/erlang/otp_src_23.0/bin' >> /opt/.profile
source /opt/.profile
# elixir
cd /opt && mkdir elixir && cd elixir
wget https://github.com/elixir-lang/elixir/releases/download/v1.10.3/Precompiled.zip
mkdir elixir-1.10.3 && unzip Precompiled.zip -d elixir-1.10.3/
echo 'export PATH=$PATH:/opt/elixir/elixir-1.10.3/bin' >> /opt/.profile
source /opt/.profile
# install emacs
# final binary: /opt/emacs/emacs-26.3/src/emacs
# get version: /opt/emacs/emacs-26.3/src/emacs --version
cd /opt && mkdir emacs && cd emacs
wget https://mirrors.ocf.berkeley.edu/gnu/emacs/emacs-26.3.tar.xz
tar -xf emacs-26.3.tar.xz
rm emacs-26.3.tar.xz
cd emacs-26.3
./configure --with-gnutls=no
make
echo 'export PATH=$PATH:/opt/emacs/emacs-26.3/src' >> /opt/.profile
source /opt/.profile
# install lua
# final binary: /opt/lua/lua54/src/lua
# get version: /opt/lua/lua54/src/lua -v
cd /opt && mkdir lua && cd lua
wget https://sourceforge.net/projects/luabinaries/files/5.4.0/Docs%20and%20Sources/lua-5.4.0_Sources.tar.gz/download
tar -xzf download
cd lua54
make
echo 'export PATH=$PATH:/opt/lua/lua54/src' >> /opt/.profile
source /opt/.profile
# install haskell
# final binary: /usr/bin/ghc
# get version: /usr/bin/ghc --version
apt install -y ghc
# install deno
# final binary: /opt/.deno/bin/deno
# get version: /opt/.deno/bin/deno --version
cd /opt && mkdir deno && cd deno
curl -fsSL https://deno.land/x/install/install.sh | sh
echo 'export DENO_INSTALL="/opt/.deno"' >> /opt/.profile
echo 'export PATH="$DENO_INSTALL/bin:$PATH"' >> /opt/.profile
source /opt/.profile
# install brainfuck
cd /opt && mkdir bf && cd bf
git clone https://github.com/texus/Brainfuck-interpreter
cd Brainfuck-interpreter
echo 'export PATH=$PATH:/opt/bf/Brainfuck-interpreter' >> /opt/.profile
source /opt/.profile
# install d
# final binary: /opt/d/dmd2/linux/bin64/dmd
# get version: /opt/d/dmd2/linux/bin64/dmd --version
cd /opt && mkdir d && cd d
wget http://downloads.dlang.org/releases/2.x/2.095.0/dmd.2.095.0.linux.tar.xz
unxz dmd.2.095.0.linux.tar.xz
tar -xf dmd.2.095.0.linux.tar
echo 'export PATH=$PATH:/opt/d/dmd2/linux/bin64' >> /opt/.profile
source /opt/.profile
# create runnable users and apply limits
for i in {1..150}; do
useradd -M runner$i
usermod -d /tmp runner$i
echo "runner$i soft nproc 64" >> /etc/security/limits.conf
echo "runner$i hard nproc 64" >> /etc/security/limits.conf
echo "runner$i soft nofile 2048" >> /etc/security/limits.conf
echo "runner$i hard nofile 2048" >> /etc/security/limits.conf
done
# remove any lingering write access to others
cd /opt
chown -R root: *
chmod -R o-w *
# cleanup
rm -rf /home/ubuntu
chmod 777 /tmp
# disable cron
systemctl stop cron
systemctl disable cron
# leave container
exit
# optionally run tests
./test_all_lxc

24
var/notes.txt Normal file
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@ -0,0 +1,24 @@
# make piston image
lxc-clone -KMP /mnt/piston_image piston piston
sed -i 's/\/mnt\/piston_image/\/var\/lib\/lxc/' piston/config
tar -czf piston.tar.gz piston/
# restore piston image
cd /var/lib/lxc
tar -xzf piston.tar.gz
```
# get piston image
cd /var/lib/lxc
wget whatever url
tar -xzf piston.tar.gz
sed -i "s/virtbr0/$(ip a | grep br0: | cut -d' ' -f2 | sed 's/://gi')/" piston/config
# start piston
cd /path/to/piston/lxc
./start
```