Browse Source

Misc. updates.

master
pi 2 years ago
parent
commit
ff1d23d39e
8 changed files with 595 additions and 304 deletions
  1. 17
    0
      app.py
  2. 1
    1
      config-example.js
  3. 32
    0
      index.html
  4. 20
    5
      package-lock.json
  5. 10
    1
      package.json
  6. 136
    0
      programs.js
  7. 93
    0
      server-xterm.js
  8. 286
    297
      server.js

+ 17
- 0
app.py View File

@@ -0,0 +1,17 @@
import tornado.web
from tornado.ioloop import IOLoop
from terminado import TermSocket, UniqueTermManager

if __name__ == '__main__':
term_manager = UniqueTermManager(shell_command=['firejail', '--quiet', '--net=none', '--private', '--chroot=files/fire', '/usr/local/bin/devilish.out'])

handlers = [
(r"/websocket", TermSocket, {'term_manager': term_manager}),
(r"/()", tornado.web.StaticFileHandler, {'path':'index.html'}),
(r"/(.*)", tornado.web.StaticFileHandler, {'path':'.'}),
]
app = tornado.web.Application(handlers)
app.listen(8282)
IOLoop.current().start()


+ 1
- 1
config-example.js View File

@@ -8,4 +8,4 @@ const server = new https.createServer({
passphrase: 'PASSWORD'
});

module.exports= server;
module.exports = server;

+ 32
- 0
index.html View File

@@ -0,0 +1,32 @@
<!doctype html>
<html>
<head>
<link rel="stylesheet" href="node_modules/xterm/dist/xterm.css" />
<link rel="stylesheet" href="node_modules/xterm/dist/addons/fullscreen/fullscreen.css" />
<script src="node_modules/xterm/dist/xterm.js"></script>
<script src="node_modules/xterm/dist/addons/terminado/terminado.js"></script>
<script src="node_modules/xterm/dist/addons/fullscreen/fullscreen.js"></script>
</head>
<body>
<div class="container">
<div id="terminal-container"></div>
</div>
<script>
terminado.apply(Terminal);

Terminal.applyAddon(fullscreen); // Apply the `fullscreen` addon
var term = new Terminal(),
protocol = (location.protocol === 'https:') ? 'wss://' : 'ws://',
socketURL = protocol + location.hostname + ((location.port) ? (':' + location.port) : '') + "/websocket";
sock = new WebSocket(socketURL);

sock.addEventListener('open', function () {
term.terminadoAttach(sock);
});

term.open(document.getElementById('terminal-container'));
term.toggleFullScreen(); // Now the terminal should occupy the full viewport
</script>
</body>
</html>


+ 20
- 5
package-lock.json View File

@@ -18,6 +18,11 @@
"resolved": "https://registry.npmjs.org/amdefine/-/amdefine-1.0.1.tgz",
"integrity": "sha1-SlKCrBZHKek2Gbz9OtFR+BfOkfU="
},
"ansi_up": {
"version": "3.0.0",
"resolved": "https://registry.npmjs.org/ansi_up/-/ansi_up-3.0.0.tgz",
"integrity": "sha1-J/Rdj0V9nO/1nk6gPI5vE8GjA+g="
},
"array-flatten": {
"version": "1.1.1",
"resolved": "http://registry.npmjs.org/array-flatten/-/array-flatten-1.1.1.tgz",
@@ -218,13 +223,13 @@
}
},
"express-handlebars": {
"version": ">=4.0.0",
"version": "2.0.1",
"resolved": "https://registry.npmjs.org/express-handlebars/-/express-handlebars-2.0.1.tgz",
"integrity": "sha1-l1Zh/+vW55RjIwukyODKXNBSL7E=",
"requires": {
"glob": "^5.0.0",
"graceful-fs": "^3.0.2",
"handlebars": ">=4.0.0",
"handlebars": "^3.0.0",
"object.assign": "^1.1.1",
"promise": "^6.0.0"
}
@@ -312,8 +317,8 @@
}
},
"handlebars": {
"version": ">=4.0.0",
"resolved": "http://registry.npmjs.org/handlebars/-/handlebars-4.0.0.tgz",
"version": "3.0.3",
"resolved": "http://registry.npmjs.org/handlebars/-/handlebars-3.0.3.tgz",
"integrity": "sha1-DgllGi8Ps8lJFgWDcQ1VH5Lm0q0=",
"requires": {
"optimist": "^0.6.1",
@@ -539,6 +544,11 @@
"resolved": "https://registry.npmjs.org/pkginfo/-/pkginfo-0.4.1.tgz",
"integrity": "sha1-tUGO8EOd5UJfxJlQQtztFPsqhP8="
},
"prettier": {
"version": "1.15.3",
"resolved": "https://registry.npmjs.org/prettier/-/prettier-1.15.3.tgz",
"integrity": "sha512-gAU9AGAPMaKb3NNSUUuhhFAS7SCO4ALTN4nRIn6PJ075Qd28Yn2Ig2ahEJWdJwJmlEBTUfC7mMUSFy8MwsOCfg=="
},
"process-nextick-args": {
"version": "2.0.0",
"resolved": "https://registry.npmjs.org/process-nextick-args/-/process-nextick-args-2.0.0.tgz",
@@ -759,7 +769,7 @@
}
},
"uglify-js": {
"version": ">=2.6.0",
"version": "2.3.6",
"resolved": "http://registry.npmjs.org/uglify-js/-/uglify-js-2.3.6.tgz",
"integrity": "sha1-+gmEdwtCi3qbKoBY9GNV0U/vIRo=",
"optional": true,
@@ -876,6 +886,11 @@
"requires": {
"async-limiter": "~1.0.0"
}
},
"xterm": {
"version": "3.10.1",
"resolved": "https://registry.npmjs.org/xterm/-/xterm-3.10.1.tgz",
"integrity": "sha512-RHaUwJ8zwLiICu1QsXoxUHP+R2Pp8Rc8yVoNali/nKw3CVXwmXxT/4mgbk7U22psuNgOqLyI4Sg9nlQfYeTRQw=="
}
}
}

+ 10
- 1
package.json View File

@@ -6,9 +6,16 @@
"scripts": {
"test": "echo \"Error: no test specified\" && exit 1"
},
"nodemonConfig": {
"ignore": [
"/var/www/demo/programs/*",
"/var/www/demo/files/*"
]
},
"author": "OSU",
"license": "ISC",
"dependencies": {
"ansi_up": "^3.0.0",
"body-parser": "^1.13.3",
"exec": "^0.2.1",
"express": "^4.16.3",
@@ -17,10 +24,12 @@
"fs": "0.0.1-security",
"https": "^1.0.0",
"mysql": "^2.8.0",
"prettier": "^1.15.3",
"prompt": "^1.0.0",
"readline": "^1.3.0",
"readline-sync": "^1.4.9",
"spawn-sync": "^2.0.0",
"ws": "^6.1.2"
"ws": "^6.1.2",
"xterm": "^3.10.1"
}
}

+ 136
- 0
programs.js View File

@@ -0,0 +1,136 @@
const { spawn } = require('child_process');
const options = {
detached: true,
stdio: 'pipe'
};


const programs = [];

class Program {

let child = spawn('ls', options);
child.unref();
child.stdin.setEncoding('utf-8');
child.stdout.setEncoding('utf-8');
constructor(name, command) {
this.name = name;
this.command = command;
this.error = null;
this.message = null;
programs.push(this);
}
echo(name, command) {
console.log(`My name is ${this.name} and my command is ${this.command}.`);
}
run(command) {
command();
}
getError() {
return this.error;
}
setError(message) {
this.error = message;
}

getMessage() {
return this.message;
}
setMessage(message) {
this.message = message;
}
}

var palindrome = new Program(
["palindrome", "./palindrome"],
function() {
child = spawn('programs/palindrome.out', options);
});

var scheme = new Program(
["scheme"],
function() {
child = spawn('scheme48', options);
});

var haskell = new Program(
["haskell"],
function() {
child = spawn('ghci', options);
});

var cat = new Program(
["cat"],
function() {
child = spawn('cat', [`./files/${messages[1]}`], options);
});

var ls = new Program(
["ls"],
function() {
let list = "";
for (let i = 0; i < programs.length; i++) {
list += programs[i].name[0] + "\n";
}
for (let i = 0; i < files.length; i++) {
list += files[i] + "\n";
}
this.setMessage(list);

});

var matriz = new Program(
["matriz", "./matriz"],
function() {
/*
for (i = 0; i < messages.length; i++) {
console.log(`!!: ${messages[i]}`);
}
*/
if (messages[3]) {
child = spawn('programs/matriz.sh', [ `${messages[1]}`, `./files/${messages[2]}`, `./files/${messages[3]}`], options);
}
else {
console.log(`!!: ${messages[0]} ${messages[1]} ${messages[2]}`);
child = spawn('programs/matriz.sh', [ `${messages[1]}`, `./files/${messages[2]}`], options);
}
});

var prime = new Program(
["prime", "./prime"],
function() {
if (messages[1] <= 1000000) {
child = spawn('programs/prime.out', [`${messages[1]}`], options);
}

else {
this.setError("Prime number must be less than or equal to 1000000.\n");
}
});

var withfeathers = new Program(
["withfeathers", "python withfeathers"],
function() {
child = spawn('python3', ['programs/withfeathers/main.py', `${messages[1]}`], options);
});

var devilish = new Program(
["devilish", "./devilish"],
function() {
child = spawn('firejail', ['--quiet', '--net=none', '--hostname=demonic', '--rlimit-nproc=100', '--rlimit-as=50000000', '--nice=10', '--private=/home/demo', '--private-tmp', '--chroot=/var/www/demo/files/fire', '/usr/local/bin/devilish.out'], options);
});

var zigzag_server = new Program(
["zigzag-server"],
function() {
child = spawn('python3', ['-u', 'programs/zigzag/zigzag-server.py'], options);
});

var zigzag_client = new Program(
["zigzag-client"],
function() {
child = spawn('programs/zigzag/zigzag-client.out', [`127.0.1.1`, `${messages[1]}`], options);
});

module.exports = programs;
module.exports.child = child;

+ 93
- 0
server-xterm.js View File

@@ -0,0 +1,93 @@
const WebSocket = require('ws');
const https = require('https');
const fs = require('fs');

const server = require('./config.js');

const wss = new WebSocket.Server({ server });

console.log("Waiting for clients...");

wss.on('connection', function connection(ws) {
console.log("Client connected!");


const { spawn } = require('child_process');
const options = {
detached: true,
stdio: 'pipe'
};

//child = spawn('firejail', ['--quiet', '--net=none', '--private', '--chroot=files/fire', '/usr/local/bin/devilish.out'], options);
child = spawn('programs/devilish.out', options);
child.unref();
child.stdin.setEncoding('utf-8');
child.stdout.setEncoding('utf-8');

userPrompt = "> ";

var buffer = "";


child.stdout.on('data', (data) => {

let sendData = data.toString();

console.log(`stdout: ${data}`);
console.log("SENDING TO CLIENT:", data.toString());
//res += data.toString();
ws.send(sendData, function ack(error) {
console.error("ERROR:", error);
});
//return res;
//res = ""
});

child.stderr.on('data', (data) => {
console.log(`stdout: ${data}`);
//console.log("SENDING TO CLIENT:", data.toString());
//res += data.toString();
ws.send(data.toString(), function ack(error) {
console.error("ERROR:", error);
});
//return res;
//res = ""
});



child.on('close', (code) => {
console.log(`child process exited with code ${code}`);
first = true;
child.kill("SIGINT");
ws.send(userPrompt, function ack(error) {
console.error("ERROR:", error);
});
});




ws.on('message', function incoming(message) {
if (message.charCodeAt(0) == 13) {
console.log('buffer: %s', buffer);

console.log("writing to child:", buffer);
child.stdin.write(buffer + "\n");
//child.stdin.write("exit\n");
//child.stdin.end();

buffer = "";
}

else {
buffer += message;
console.log('received: %s', message);
}

});


});

server.listen(process.argv[2] || 8181);

+ 286
- 297
server.js View File

@@ -1,21 +1,20 @@
const WebSocket = require('ws');
const fs = require('fs');

const server = require('./config.js');

function noop() {}

function heartbeat() {
this.isAlive = true;
this.isAlive = true;
}

const interval = setInterval(function ping() {
wss.clients.forEach(function each(ws) {
if (ws.isAlive === false) return ws.terminate();
wss.clients.forEach(function each(ws) {
if (ws.isAlive === false) return ws.terminate();

ws.isAlive = false;
ws.ping(noop);
});
ws.isAlive = false;
ws.ping(noop);
});
}, 30000);


@@ -25,302 +24,292 @@ console.log("Waiting for clients...");

const { spawn } = require('child_process');
const options = {
detached: true,
stdio: 'pipe'
detached: true,
stdio: 'pipe'
};

let child = spawn('ls', options);
child.unref();
child.stdin.setEncoding('utf-8');
child.stdout.setEncoding('utf-8');

let first = true;
files = ["m1", "m2"];
userPrompt = "> ";
var programs = [];

class Program {
constructor(name, command) {
this.name = name;
this.command = command;
this.error = null;
this.message = null;
programs.push(this);
}
echo(name, command) {
console.log(`My name is ${this.name} and my command is ${this.command}.`);
}
run(command) {
command();
}
getError() {
return this.error;
}
setError(message) {
this.error = message;
}

getMessage() {
return this.message;
}
setMessage(message) {
this.message = message;
}
const options_shell = {
detached: true,
stdio: 'pipe',
shell: true,
cwd: 'programs/wyeast'
};

}

function programDefintions() {
var palindrome = new Program(
["palindrome", "./palindrome"],
function() {
child = spawn('programs/palindrome.out', options);
});

var scheme = new Program(
["scheme"],
function() {
child = spawn('scheme48', options);
});

var haskell = new Program(
["haskell"],
function() {
child = spawn('ghci', options);
});

var cat = new Program(
["cat"],
function() {
child = spawn('cat', [`./files/${messages[1]}`], options);
});

var ls = new Program(
["ls"],
function() {
let list = "";
for (let i = 0; i < programs.length; i++) {
list += programs[i].name[0] + "\n";
}
for (let i = 0; i < files.length; i++) {
list += files[i] + "\n";
}
this.setMessage(list);

});

var matriz = new Program(
["matriz", "./matriz"],
function() {
/*
for (i = 0; i < messages.length; i++) {
console.log(`!!: ${messages[i]}`);
}
*/
if (messages[3]) {
child = spawn('programs/matriz.sh', [ `${messages[1]}`, `./files/${messages[2]}`, `./files/${messages[3]}`], options);
}
else {
console.log(`!!: ${messages[0]} ${messages[1]} ${messages[2]}`);
child = spawn('programs/matriz.sh', [ `${messages[1]}`, `./files/${messages[2]}`], options);
}
});

var prime = new Program(
["prime", "./prime"],
function() {
if (messages[1] <= 1000000) {
child = spawn('programs/prime.out', [`${messages[1]}`], options);
}

else {
this.setError("Prime number must be less than or equal to 1000000.\n");
}
});

var withfeathers = new Program(
["withfeathers", "python withfeathers"],
function() {
child = spawn('python3', ['programs/withfeathers/main.py', `${messages[1]}`], options);
});

var devilish = new Program(
["devilish", "./devilish"],
function() {
child = spawn('firejail', ['--quiet', '--net=none', '--hostname=demonic', '--rlimit-nproc=100', '--rlimit-as=50000000', '--nice=10', '--private=/home/demo', '--private-tmp', '--chroot=/var/www/demo/files/fire', '/usr/local/bin/devilish.out'], options);
});

var zigzag_server = new Program(
["zigzag-server"],
function() {
child = spawn('python3', ['-u', 'programs/zigzag/zigzag-server.py'], options);
});

var zigzag_client = new Program(
["zigzag-client"],
function() {
child = spawn('programs/zigzag/zigzag-client.out', [`127.0.1.1`, `${messages[1]}`], options);
});
}
programDefintions();

wss.on('connection', function connection(ws) {
console.log("Client connected!");

ws.isAlive = true;
ws.on('pong', heartbeat);



ws.on('message', function incoming(message) {
//console.log('received: %s', message);
if (message == "ping") {
ws.send("pong");
return;
}

else if (message == "close") {
ws.close();
return;
}

if (first == true) {
first = false;


console.log(message);
if (message == ":(){ :|:& };:" || message == "sudo rm -rf /*") {

first = true;

let song = "Daisy, Daisy,\n" +
"Give me your answer, do!\n" +
"I'm half crazy,\n" +
"All for the love of you!\n"

ws.send(song , function ack(error) {
console.error("ERROR:", error);
});
ws.send(userPrompt, function ack(error) {
console.error("ERROR:", error);
});

}

else {

messages = message.split(" ");
for (i = 0; i < messages.length; i++) {
//console.log(messages[i]);
}

let found = false;
for (i = 0; i < programs.length; i++) {
for (n = 0; n < programs[i].name.length; n++) {
if (messages[0] === programs[i].name[n]) {
console.log("calling:", programs[i].name[n]);
programs[i].command();
console.log("geterror:", programs[i].getError());
console.log("getMessage:", programs[i].getMessage());
if (programs[i].getError()) {
ws.send(programs[i].getError());
ws.send(userPrompt);
first = true;
programs[i].setError(null);
}
if (programs[i].getMessage()) {
ws.send(programs[i].getMessage());
ws.send(userPrompt);
first = true;
programs[i].setMessage(null);
}
found = true;
break;
}
}
}

if (!found) {
first = true;
console.log("Invalid program.");
ws.send("Invalid program.\n", function ack(error) {
console.error("ERROR:", error);
});
ws.send(userPrompt, function ack(error) {
console.error("ERROR:", error);
});

child.kill("SIGINT");
}
}

//let res = ""
child.stdout.on('data', (data) => {


let sendData = data.toString();

console.log(`stdout: ${data}`);
//console.log("SENDING TO CLIENT:", data.toString());
//res += data.toString();
ws.send(sendData, function ack(error) {
console.error("ERROR:", error);
});
//return res;
//res = ""
});

child.stderr.on('data', (data) => {
console.log(`stdout: ${data}`);
//console.log("SENDING TO CLIENT:", data.toString());
//res += data.toString();
ws.send(data.toString(), function ack(error) {
console.error("ERROR:", error);
});
//return res;
//res = ""
});



child.on('close', (code) => {
console.log(`child process exited with code ${code}`);
first = true;
child.kill("SIGINT");
ws.send(userPrompt, function ack(error) {
console.error("ERROR:", error);
});
});

}


else {
if (message == "SIGINT") {
ws.send("SIGINT received.\n", function ack(error) {
console.error("ERROR:", error);
});
child.kill("SIGINT");
first = true;
}
if (message == "SIGTSTP") {
ws.send("SIGTSTP received.\n", function ack(error) {
console.error("ERROR:", error);
});
child.kill("SIGTSTP");
first = true;
}
else {
console.log("writing to child:", message);
child.stdin.write(message + "\n");
}
}
//child.stdin.write("exit\n");
//child.stdin.end();

});

console.log("Client connected!");
let first = true;

ws.isAlive = true;
ws.on('pong', heartbeat);

let child = spawn('ls', options);
child.unref();
child.stdin.setEncoding('utf-8');
child.stdout.setEncoding('utf-8');

files = ["m1", "m2"];
userPrompt = "> ";

const programs = [];

class Program {
constructor(name, command) {
this.name = name;
this.command = command;
this.error = null;
this.message = null;
programs.push(this);
}
echo(name, command) {
console.log(`My name is ${this.name} and my command is ${this.command}.`);
}
run(command) {
command();
}
getError() {
return this.error;
}
setError(message) {
this.error = message;
}

getMessage() {
return this.message;
}
setMessage(message) {
this.message = message;
}
}

var palindrome = new Program(
["palindrome", "./palindrome"],
function() {
child = spawn('programs/palindrome.out', options);
});

var scheme = new Program(
["scheme"],
function() {
child = spawn('scheme48', options);
});

var haskell = new Program(
["haskell"],
function() {
child = spawn('ghci', options);
});

var cat = new Program(
["cat"],
function() {
child = spawn('cat', [`./files/${messages[1]}`], options);
});

var ls = new Program(
["ls"],
function() {
let list = "";
for (let i = 0; i < programs.length; i++) {
list += programs[i].name[0] + "\n";
}
for (let i = 0; i < files.length; i++) {
list += files[i] + "\n";
}
this.setMessage(list);

});

var matriz = new Program(
["matriz", "./matriz"],
function() {
/*
for (i = 0; i < messages.length; i++) {
console.log(`!!: ${messages[i]}`);
}
*/
if (messages[3]) {
child = spawn('programs/matriz.sh', [ `${messages[1]}`, `./files/${messages[2]}`, `./files/${messages[3]}`], options);
}
else {
console.log(`!!: ${messages[0]} ${messages[1]} ${messages[2]}`);
child = spawn('programs/matriz.sh', [ `${messages[1]}`, `./files/${messages[2]}`], options);
}
});

var prime = new Program(
["prime", "./prime"],
function() {
if (messages[1] <= 1000000) {
child = spawn('programs/prime.out', [`${messages[1]}`], options);
}

else {
this.setError("Prime number must be less than or equal to 1000000.\n");
}
});

var withfeathers = new Program(
["withfeathers", "python withfeathers"],
function() {
child = spawn('python3', ['programs/withfeathers/main.py', `${messages[1]}`], options);
});

var devilish = new Program(
["devilish", "./devilish"],
function() {
child = spawn('firejail', ['--quiet', '--net=none', '--hostname=demonic', '--rlimit-nproc=100', '--rlimit-as=50000000', '--nice=10', '--private=/home/demo', '--private-tmp', '--chroot=/var/www/demo/files/fire', '/usr/local/bin/devilish.out'], options);
});

var zigzag_server = new Program(
["zigzag-server"],
function() {
child = spawn('python3', ['-u', 'programs/zigzag/zigzag-server.py'], options);
});

var zigzag_client = new Program(
["zigzag-client"],
function() {
child = spawn('programs/zigzag/zigzag-client.out', [`127.0.1.1`, `${messages[1]}`], options);
});

var wyeast = new Program(
["wyeast"],
function() {
child = spawn('./buildworld && ./wyeast', options_shell);
});

ws.on('message', function incoming(message) {
//console.log('received: %s', message);
if (message == "ping") {
ws.send("pong");
return;
}

else if (message == "close") {
ws.close();
return;
}

if (first == true) {
first = false;

console.log(message);
if (message == ":(){ :|:& };:" || message == "sudo rm -rf /*") {

first = true;

let song = "Daisy, Daisy,\n" +
"Give me your answer, do!\n" +
"I'm half crazy,\n" +
"All for the love of you!\n"

ws.send(song , function ack(error) {
console.error("ERROR:", error);
});
ws.send(userPrompt, function ack(error) {
console.error("ERROR:", error);
});

}

else {

messages = message.split(" ");
for (i = 0; i < messages.length; i++) {
//console.log(messages[i]);
}

let found = false;
for (i = 0; i < programs.length; i++) {
for (n = 0; n < programs[i].name.length; n++) {
if (messages[0] === programs[i].name[n]) {
console.log("calling:", programs[i].name[n]);
programs[i].command();
console.log("geterror:", programs[i].getError());
console.log("getMessage:", programs[i].getMessage());
if (programs[i].getError()) {
ws.send(programs[i].getError());
ws.send(userPrompt);
first = true;
programs[i].setError(null);
}
if (programs[i].getMessage()) {
ws.send(programs[i].getMessage());
ws.send(userPrompt);
first = true;
programs[i].setMessage(null);
}
found = true;
break;
}
}
}

if (!found) {
first = true;
console.log("Invalid program.");
ws.send("Invalid program.\n", function ack(error) {
console.error("ERROR:", error);
});
ws.send(userPrompt, function ack(error) {
console.error("ERROR:", error);
});

child.kill("SIGINT");
}
}

child.stdout.on('data', (data) => {
let sendData = data.toString();

console.log(`stdout: ${data}`);
ws.send(sendData, function ack(error) {
console.error("ERROR:", error);
});
});

child.stderr.on('data', (data) => {
console.log(`stdout: ${data}`);
ws.send(data.toString(), function ack(error) {
console.error("ERROR:", error);
});
});


child.on('close', (code) => {
console.log(`child process exited with code ${code}`);
first = true;
child.kill("SIGINT");
ws.send(userPrompt, function ack(error) {
console.error("ERROR:", error);
});
});

}

else {
if (message == "SIGINT") {
ws.send("SIGINT received.\n", function ack(error) {
console.error("ERROR:", error);
});
child.kill("SIGINT");
first = true;
}
if (message == "SIGTSTP") {
ws.send("SIGTSTP received.\n", function ack(error) {
console.error("ERROR:", error);
});
child.kill("SIGTSTP");
first = true;
}
else {
console.log("writing to child:", message);
child.stdin.write(message + "\n");
}
}
});
});

server.listen(process.argv[2] || 8181);



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