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server.js
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server.js
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/**
* @type {any}
*/
const WebSocket = require('ws')
const http = require('http')
const wss = new WebSocket.Server({ noServer: true })
const utils = require('./libs/utils.js');
const setupWSConnection = utils.setupWSConnection
var express = require('express');
const basicAuth = require('express-basic-auth')
var bodyParser = require('body-parser')
var fs = require('fs')
const app = express();
const host = process.env.HOST || '0.0.0.0'
const port = process.env.PORT || 1234
const pithy_bin = process.env.PITHY_BIN || "python3"
const pithy_timeout = process.env.PITHY_TIMEOUT || 0
var Y = require("yjs");
const { spawn } = require('child_process');
var glob = require("glob");
const { time } = require('console');
const server = http.createServer(app)
const sqlite3 = require("sqlite3").verbose()
db = new sqlite3.Database("runs.db")
cdb = new sqlite3.Database("code.db")
cdb.run(`CREATE TABLE IF NOT EXISTS code (
name TEXT PRIMARY KEY,
code TEXT,
time integer);`);
cdb.run(`CREATE TABLE IF NOT EXISTS history (
time INTEGER PRIMARY KEY,
name TEXT,
code TEXT);`);
cdb.run(`CREATE INDEX IF NOT EXISTS idx_hist_name ON history (name);`);
db.run(`CREATE TABLE IF NOT EXISTS runs(id INTEGER PRIMARY KEY,
code TEXT NOT NULL,
user TEXT NOT NULL,
run_time INTEGER,
exit_code INTEGER,
exit_type TEXT)`)
var DEBUG = (function(){
var timestamp = function(){};
timestamp.toString = function(){
return "[" + (new Date).toISOString() + "]";
};
return {
log: console.log.bind(console, '%s', timestamp)
}
})();
function writecdb(name,code)
{
var tti = new Date().getTime();
var sql = 'INSERT OR REPLACE INTO code (name,code,time) VALUES (?,?,?)';
cdb.run(sql,[name,code,tti]);
}
function writecdbhist(name,code)
{
var tti = new Date().getTime();
var sql = 'INSERT INTO history (time,name,code) VALUES (?,?,?)';
cdb.run(sql,[tti,name,code]);
}
function authentication(req, res, next) {
users = JSON.parse(fs.readFileSync("assets/pass.json").toString())
var authheader = req.headers.authorization;
if (!authheader) {
var err = new Error('You are not authenticated!');
res.setHeader('WWW-Authenticate', 'Basic');
err.status = 401;
return next(err)
}
var auth = new Buffer.from(authheader.split(' ')[1],'base64').toString().split(':');
var user = auth[0];
var pass = auth[1];
if(users.hasOwnProperty(user) && users[user]==pass){next();}
else {
var err = new Error('You are not authenticated!');
res.setHeader('WWW-Authenticate', 'Basic');
err.status = 401;
return next(err);
}
}
//folders
codebase = "code/"
histbase = "code_stamped/"
tempbase = "temp_results/"
resbase = "results/"
imgbase = "images/"
filebase = "files/"
assetbase = "assets/"
dirs = [tempbase,codebase,histbase,resbase,imgbase,filebase,assetbase]
for (d in dirs)
{
dird = dirs[d].toString()
try
{ fs.mkdirSync(dird); DEBUG.log(dird+" has been made");}
catch (e){DEBUG.log(dird+" is in place")}
}
DEBUG.log(`timeout set to ${pithy_timeout}`)
DEBUG.log(`python set to ${pithy_bin}`)
//if first run make password file
if (!fs.existsSync("assets/pass.json")){fs.writeFileSync("assets/pass.json",`{"user":"pass"}`)}
//if first run make password file
basics = ["pithy3.py","python3_basics.py"]
for (i in basics)
{
if (!fs.existsSync(`code/${basics[i]}`)){fs.copyFileSync(`static/examples/${basics[i]}`,`code/${basics[i]}`)}
}
app.use('/dist',express.static('dist'));
app.use('/static',express.static('static'));
app.use('/images',express.static('images'));
app.use('/node_modules',express.static('node_modules'));
app.use(bodyParser.urlencoded({ extended: false }))
app.use(bodyParser.json())
app.use(authentication)
ps = {}
ts = {}
os = {}
ks = {}
tss = {}
//Helper Functions
app.post("/code_list/",(req,res)=>{
data = req.body;
files = glob.sync("code/*.py")
files = files.map(function (fileName) {
return {
name: fileName,
time: fs.statSync(fileName).mtime.getTime()
};
}).map(function (v) {
return [v.name,v.time]; });
if (data['count'] != undefined) files = files.slice(0,data['count']);
res.send({'files':files})
})
app.post("/check_status/",(req,res)=>{
data = req.body;
res.send(utils.getYDoc(data['code']).getText('output').toString());
});
app.post("/check_exists/",(req,res)=>{
data = req.body;
codename = data['code'];
action = "none"
//first, see if we've got anything in memory/peristence
foo = utils.getYDoc(codename).getText('codemirror').toString();
if (foo.length == 0){
DEBUG.log(`cannot find ${codename}.py in persistence, looking in code`);
//if not, try to open up file from code and inject into codemirror
if (fs.existsSync(`code/${codename}.py`))
{
DEBUG.log(`inserting from code/${codename}.py`);
bits = fs.readFileSync(`code/${codename}.py`).toString();
mem = utils.getYDoc(codename).getText('codemirror')
mem.delete(0,mem.length);
mem.insert(0,bits);
action = "pulled from code"
}
//if nothing, send template
else
{
DEBUG.log(`doesn't seem to exist, inserting template`);
bits = fs.readFileSync(`static/template.txt`).toString()
mem = utils.getYDoc(codename).getText('codemirror')
mem.delete(0,mem.length);
mem.insert(0,bits);
action = "inserted template"
}
}
else { DEBUG.log(`found ${codename} in persistence`) }
res.send({'action':action})
})
app.post("/check_running/",(req,res)=>{
data = req.body;
out = {'running':true}
if (ps[data['code']]==undefined) out['running'] = false
else if (ps[data['code']]['exitCode']!= null) out['running'] = false
else if (ps[data['code']]['killed']) out['running'] = false
if (out['running']) out['ps'] = ps[data['code']]
if (out['running']==false) clearInterval(ts[data['code']])
res.send(out)
});
app.post('/history/', function(req, res)
{
console.log("hist debug")
var t1 = new Date().getTime();
console.log(new Date().getTime() - t1);
data = req.body;
codename = data['code']
length = "_1314970891000".length //get length of timestamp
structure = `${histbase + codename}*`
thing_list = []
console.log(new Date().getTime() - t1);
//fils = fs.readdirSync(histbase)
fs.promises.readdir(histbase).then( fils =>
{
for (i in fils)
{
if (fils[i].search(`${codename}_`) > -1)
{
thing_list.push(fils[i])
}
}
console.log(new Date().getTime() - t1);
fils = thing_list
fils.sort()
fils.reverse()
hist_list = []
for (i in fils)
{
time_part = parseInt(fils[i].substr(fils[i].length - length+1))
date = new Date(time_part)
hour = date.getHours()
min = date.getMinutes()
sec = date.getSeconds()
day = date.getDate()
month = date.getMonth()
year = date.getYear()
time_part = month+"/"+day+"/"+year+" "+hour+":"+min+":"+sec;
hist_list.push([fils[i],date.toISOString()])
}
console.log(new Date().getTime() - t1);
res.json({'history':hist_list})
});
});
app.post('/get_history/',function(req,res)
{
data = req.body;
codename = data['code']
histval = data['history']
old_code = fs.readFileSync(`${histbase+histval}`).toString();
//new history format with sensible stuff
try {old_code = JSON.parse(old_code)['code']}
catch {old_code = old_code}
ycm = utils.getYDoc(codename).getText('codemirror')
ycm.delete(0,ycm.length);
ycm.insert(0,old_code);
res.send({'reverted':histval})
})
app.get('/*', (req, res) => {
if (req.params[0] == "") res.sendFile('homepage.html', { root: __dirname+"/static" })
else res.sendFile('index.html', { root: __dirname+"/static" });
});
app.post("/get_user/",(req,res) =>{
foo = new Buffer.from(req.headers.authorization.split(' ')[1],'base64').toString().split(':')
res.send({'user':foo[0]})
}
)
app.post("/copy_code/",(req,res)=>{
data = req.body;
codename = data['code']
copyto = data['copy_to']
nfn = `code/${copyto}.py`
if (fs.existsSync(nfn)){res.send({'status':'aborted, file already exists'})}
else
{
code = utils.getYDoc(codename).getText('codemirror').toString();
fs.writeFileSync(nfn,code)
//writecdb(nfn,code);
res.send({'status':'success','new_code':copyto})
}
})
//Running Functions
app.post("/run/",(req,res) => {
data = req.body
user = new Buffer.from(req.headers.authorization.split(' ')[1],'base64').toString().split(':')[0]
getme = runner(data['code'],user)
res.send({'state':getme});
});
// logger
function newrow(ti,codename,user)
{
db.run(`INSERT INTO runs (id,code,user)
VALUES (${ti},'${codename}','${user}')`)
}
function editrow(ti,rt,ec,et)
{
db.run(`UPDATE runs
SET run_time = ${rt},
exit_code = ${ec},
exit_type = '${et}'
WHERE
id = ${ti}`)
}
function runner(codename,user="user"){
code = utils.getYDoc(codename).getText('codemirror').toString();
try { have = fs.readFileSync("code/"+codename+".py").toString();}
catch(e) {have = ""}
if (code != have) {
tts = new Date().getTime().toString()
fs.writeFileSync("code/"+codename+".py",code);
//writecdb(codename+".py",code);
out = {}
out['code'] = code;
out['user'] = user;
out['time'] = tts;
fs.writeFileSync(`${histbase}${codename}_${tts}`,JSON.stringify(out));
//writecdbhist(codename+".py",JSON.stringify(out));
}
//Look for timeout in code
var to = pithy_timeout;
var ft = ""
try {
to = parseInt(code.match(/##pithytimeout=[\d*].*(\r\n|\r|\n)/g)[0].split("=")[1].trim())
ft = `with a timeout after ${to} seconds`
}
catch {to = pithy_timeout;}
//Look for different python version in code
var bin = pithy_bin;
try {
bin = code.match(/#!.*(\r\n|\r|\n)/g)[0].split("!")[1].trim()
}
catch (err) {bin = pithy_bin}
DEBUG.log(`running ${codename} using ${bin} ${ft}`)
ks[codename] = utils.getYDoc(codename).getMap(codename+"_keys");
ks[codename].set("running",true);
os[codename] = utils.getYDoc(codename).getText(codename+'_output')
os[codename].delete(0,os[codename].length);
tss[codename] = new Date().getTime();
ts[codename] = setInterval(function(){ks[codename].set('runtime',new Date().getTime()-tss[codename])},10);
ps[codename] = spawn("timeout",[to,bin,`-u`,`code/${codename}.py`]);
newrow(tss[codename],codename,user)
ps[codename].stdout.on('data',(d) => {os[codename].insert(os[codename].length,`${d}`)})
ps[codename].stderr.on('data',(err) => {os[codename].insert(os[codename].length,`<div class='error'>${err}</div>`)})
ps[codename].on('error',(err) => {os[codename].insert(os[codename].length,`<div class='error'>${err}</div>`)})
ps[codename].on('exit',(exit_code)=> {
ks[codename].set("running",false);
ks[codename].set("exit_code",exit_code);
ks[codename].set("killed",ps[codename]['killed']);
var eco = ""
if (ps[codename]['killed']) eco = `was killed`
else eco = `finished with code ${exit_code}`
var rt = new Date().getTime()-tss[codename];
DEBUG.log(`${codename} ${eco} after ${rt} ms`)
editrow(tss[codename],rt,exit_code,eco);
clearInterval(ts[codename]);})
return ps[codename]
}
app.post("/kill/", (req,res)=>
{
data = req.body;
ps[data['code']].kill();
res.send({'state':ps[data['code']]});
});
//fire up server
wss.on('connection', setupWSConnection)
server.on('upgrade', (request, socket, head) => {
const handleAuth = ws => { wss.emit('connection', ws, request)}
wss.handleUpgrade(request, socket, head, handleAuth)
})
server.listen({ host, port })
DEBUG.log(`running at '${host}' on port ${port}`)