telebit.js/bin/telebitd.js

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2018-06-11 18:56:16 +00:00
#!/usr/bin/env node
(function () {
'use strict';
var pkg = require('../package.json');
var url = require('url');
var path = require('path');
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var os = require('os');
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var fs = require('fs');
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var common = require('../lib/cli-common.js');
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var http = require('http');
var YAML = require('js-yaml');
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var recase = require('recase').create({});
var camelCopy = recase.camelCopy.bind(recase);
var snakeCopy = recase.snakeCopy.bind(recase);
var state = { homedir: os.homedir(), servernames: {}, ports: {} };
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var argv = process.argv.slice(2);
var confIndex = argv.indexOf('--config');
var confpath;
var confargs;
if (-1 === confIndex) {
confIndex = argv.indexOf('-c');
}
if (-1 !== confIndex) {
confargs = argv.splice(confIndex, 2);
confpath = confargs[1];
}
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var cancelUpdater = require('../lib/updater')(pkg);
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function help() {
console.info('');
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console.info('Telebit Daemon v' + pkg.version);
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console.info('');
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console.info('Usage:');
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console.info('');
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console.info('\ttelebitd --config <path>');
console.info('\tex: telebitd --config ~/.config/telebit/telebitd.yml');
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console.info('');
console.info('');
console.info('Config:');
console.info('');
console.info('\tSee https://git.coolaj86.com/coolaj86/telebit.js');
console.info('');
console.info('');
}
var verstr = [ pkg.name + ' daemon v' + pkg.version ];
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if (-1 === confIndex) {
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// We have two possible valid paths if no --config is given (i.e. run from an npm-only install)
// * {install}/etc/telebitd.yml
// * ~/.config/telebit/telebitd.yml
// We'll asume the later since the installers include --config in the system launcher script
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confpath = common.DEFAULT_CONFIG_PATH;
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verstr.push('(--config "' + confpath + '")');
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}
if (-1 !== argv.indexOf('-h') || -1 !== argv.indexOf('--help')) {
help();
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process.exit(0);
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}
if (!confpath || /^--/.test(confpath)) {
help();
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process.exit(1);
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}
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var tokenpath = path.join(path.dirname(confpath), 'access_token.txt');
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var token;
try {
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token = fs.readFileSync(tokenpath, 'ascii').trim();
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console.log('[DEBUG] access_token', typeof token, token);
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} catch(e) {
// ignore
}
var controlServer;
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var tun;
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var controllers = {};
function saveConfig(cb) {
fs.writeFile(confpath, YAML.safeDump(snakeCopy(state.config)), cb);
}
function getServername(servernames, sub) {
if (state.servernames[sub]) {
return sub;
}
var names = Object.keys(servernames).map(function (servername) {
if ('*.' === servername.slice(0,2)) {
return servername;
}
return '*.' + servername;
}).sort(function (a, b) {
return b.length - a.length;
});
return names.filter(function (pattern) {
// '.example.com' = '*.example.com'.split(1)
var subPiece = pattern.slice(1);
// '.com' = 'sub.example.com'.slice(-4)
// '.example.com' = 'sub.example.com'.slice(-12)
if (subPiece === sub.slice(-subPiece.length)) {
return subPiece;
}
})[0];
}
controllers.http = function (req, res, opts) {
function getAppname(pathname) {
// port number
if (String(pathname) === String(parseInt(pathname, 10))) {
return String(pathname);
}
var paths = pathname.split(/[\\\/\:]/);
// rid trailing slash(es)
while (!paths[paths.length -1]) {
paths.pop();
}
var name = paths.pop();
name = path.basename(name, path.extname(name));
name = name.replace(/\./, '-').replace(/-+/, '-');
return name;
}
if (!opts.body) {
res.statusCode = 422;
res.setHeader('Content-Type', 'application/json');
res.end(JSON.stringify({"error":{"message":"module \'http\' needs more arguments"}}));
return;
}
var active = true;
var portOrPath = opts.body[0];
var appname = getAppname(portOrPath);
var subdomain = opts.body[1];
var remoteHost;
if (subdomain) {
var handlerName = getServername(state.servernames, subdomain);
if (!handlerName) {
active = false;
}
if (!state.servernames[subdomain]) {
state.servernames[subdomain] = {};
}
state.servernames[subdomain].handler = portOrPath;
remoteHost = subdomain;
} else {
if (!Object.keys(state.servernames).sort(function (a, b) {
return b.length - a.length;
}).some(function (key) {
if (state.servernames[key].handler === appname) {
// example.com.handler: 3000 // already set
remoteHost = key;
return true;
}
if (state.servernames[key].wildcard) {
if (!state.servernames[appname + '.' + key]) {
state.servernames[appname + '.' + key] = {};
}
state.servernames[appname + '.' + key].handler = portOrPath;
remoteHost = appname + '.' + key;
return true;
}
})) {
Object.keys(state.servernames).some(function (key) {
state.servernames[key].handler = portOrPath;
remoteHost = appname + '.' + key;
return true;
});
}
}
state.config.servernames = state.servernames;
saveConfig(function (err) {
res.setHeader('Content-Type', 'application/json');
res.end(JSON.stringify({
success: true
, active: active
, remote: remoteHost
, local: portOrPath
, saved: !err
, module: 'http'
}));
});
};
controllers.tcp = function (req, res, opts) {
if (!opts.body) {
res.statusCode = 422;
res.setHeader('Content-Type', 'application/json');
res.end(JSON.stringify({ error: { message: "module 'tcp' needs more arguments" } }));
return;
}
var active;
var remotePort = opts.body[1];
var portOrPath = opts.body[0];
// portnum
if (remotePort) {
if (!state.ports[remotePort]) {
active = false;
return;
}
// forward-to port-or-module
// TODO we can't send files over tcp until we fix the connect event bug
state.ports[remotePort].handler = portOrPath;
} else {
if (!Object.keys(state.ports).some(function (key) {
if (!state.ports[key].handler) {
state.ports[key].handler = portOrPath;
remotePort = key;
return true;
}
})) {
Object.keys(state.ports).some(function (key) {
state.ports[key].handler = portOrPath;
remotePort = key;
return true;
});
}
}
state.config.ports = state.ports;
saveConfig(function (err) {
res.setHeader('Content-Type', 'application/json');
res.end(JSON.stringify({
success: true
, active: active
, remote: remotePort
, local: portOrPath
, saved: !err
, module: 'tcp'
}));
});
};
controllers.ssh = function (req, res, opts) {
if (!opts.body) {
res.statusCode = 422;
res.setHeader('Content-Type', 'application/json');
res.end(JSON.stringify({"error":{"message":"module 'ssh' needs more arguments"}}));
return;
}
function sshSuccess() {
//state.config.sshAuto = state.sshAuto;
saveConfig(function (err) {
res.setHeader('Content-Type', 'application/json');
res.end(JSON.stringify({
success: true
, active: true
, remote: Object.keys(state.config.ports)[0]
, local: state.config.sshAuto || 22
, saved: !err
, module: 'ssh'
}));
});
}
var sshAuto = opts.body[0];
if (-1 !== [ 'false', 'none', 'off', 'disable' ].indexOf(sshAuto)) {
state.config.sshAuto = false;
sshSuccess();
return;
}
if (-1 !== [ 'true', 'auto', 'on', 'enable' ].indexOf(sshAuto)) {
state.config.sshAuto = 22;
sshSuccess();
return;
}
sshAuto = parseInt(sshAuto, 10);
if (!sshAuto || sshAuto <= 0 || sshAuto > 65535) {
res.statusCode = 400;
res.setHeader('Content-Type', 'application/json');
res.end(JSON.stringify({ error: { message: "bad ssh_auto option '" + opts.body[0] + "'" } }));
return;
}
state.config.sshAuto = sshAuto;
sshSuccess();
};
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function serveControlsHelper() {
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controlServer = http.createServer(function (req, res) {
var opts = url.parse(req.url, true);
if (opts.query._body) {
try {
opts.body = JSON.parse(decodeURIComponent(opts.query._body, true));
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} catch(e) {
res.statusCode = 500;
res.end('{"error":{"message":"?_body={{bad_format}}"}}');
return;
}
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}
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function listSuccess() {
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var dumpy = {
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servernames: state.servernames
, ports: state.ports
, ssh: state.config.sshAuto || 'disabled'
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, code: 'CONFIG'
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};
if (state.otp) {
dumpy.device_pair_code = state.otp;
}
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if (state._can_pair && state.config.email && !state.token) {
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dumpy.code = "AWAIT_AUTH";
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dumpy.message = "Please run 'telebit init' to authenticate.";
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}
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res.end(JSON.stringify(dumpy));
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}
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if (/\b(config)\b/.test(opts.pathname) && /get/i.test(req.method)) {
res.setHeader('Content-Type', 'appliCation/json');
res.end(JSON.stringify(state.config));
return;
}
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//
// without proper config
//
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function saveAndReport(err, _tun) {
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console.log('[DEBUG] saveAndReport config write', confpath);
console.log(YAML.safeDump(snakeCopy(state.config)));
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if (err) { throw err; }
tun = _tun;
fs.writeFile(confpath, YAML.safeDump(snakeCopy(state.config)), function (err) {
if (err) {
res.statusCode = 500;
res.setHeader('Content-Type', 'application/json');
res.end('{"error":{"message":"Could not save config file after init: ' + err.message.replace(/"/g, "'")
+ '.\nPerhaps check that the file exists and your user has permissions to write it?"}}');
return;
}
listSuccess();
});
}
if (/\b(init|config)\b/.test(opts.pathname)) {
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var conf = {};
if (!opts.body) {
res.statusCode = 422;
res.end('{"error":{"message":"module \'init\' needs more arguments"}}');
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return;
}
// relay, email, agree_tos, servernames, ports
//
opts.body.forEach(function (opt) {
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var parts = opt.split(/:/);
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if ('true' === parts[1]) {
parts[1] = true;
} else if ('false' === parts[1]) {
parts[1] = false;
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} else if ('null' === parts[1]) {
parts[1] = null;
} else if ('undefined' === parts[1]) {
parts[1] = undefined;
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}
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conf[parts[0]] = parts[1];
});
// TODO camelCase query
state.config.email = conf.email || state.config.email || '';
if ('undefined' !== typeof conf.agreeTos
|| 'undefined' !== typeof conf.agreeTos ) {
state.config.agreeTos = conf.agreeTos || conf.agree_tos;
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}
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state.otp = conf._otp; // this should only be done on the client side
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state.config.relay = conf.relay || state.config.relay || '';
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console.log();
console.log('conf.token', typeof conf.token, conf.token);
console.log('state.config.token', typeof state.config.token, state.config.token);
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state.config.token = conf.token || state.config.token || null;
state.config.secret = conf.secret || state.config.secret || null;
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state.pretoken = conf.pretoken || state.config.pretoken || null;
if (state.secret) {
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console.log('state.secret');
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state.token = common.signToken(state);
}
if (!state.token) {
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console.log('!state.token');
state.token = conf._token;
}
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console.log();
console.log('JSON.stringify(conf)');
console.log(JSON.stringify(conf));
console.log();
console.log('JSON.stringify(state)');
console.log(JSON.stringify(state));
console.log();
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if ('undefined' !== typeof conf.newsletter) {
state.config.newsletter = conf.newsletter;
}
if ('undefined' !== typeof conf.communityMember
|| 'undefined' !== typeof conf.community_member) {
state.config.communityMember = conf.communityMember || conf.community_member;
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}
if ('undefined' !== typeof conf.telemetry) {
state.config.telemetry = conf.telemetry;
}
if (conf._servernames) {
(conf._servernames||'').split(/,/g).forEach(function (key) {
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if (!state.config.servernames[key]) {
state.config.servernames[key] = {};
}
});
}
if (conf._ports) {
(conf._ports||'').split(/,/g).forEach(function (key) {
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if (!state.config.ports[key]) {
state.config.ports[key] = {};
}
});
}
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if (!state.config.relay || !state.config.email || !state.config.agreeTos) {
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console.log('aborting for some reason');
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res.statusCode = 400;
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res.setHeader('Content-Type', 'application/json');
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res.end(JSON.stringify({
error: {
code: "E_INIT"
, message: "Missing important config file params"
, _params: JSON.stringify(conf)
, _config: JSON.stringify(state.config)
, _body: JSON.stringify(opts.body)
}
}));
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return;
}
if (tun) {
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console.log('ending existing tunnel, starting anew');
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tun.end(function () {
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console.log('success ending');
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rawTunnel(saveAndReport);
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});
tun = null;
setTimeout(function () {
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if (!tun) {
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console.log('failed to end, but starting anyway');
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rawTunnel(saveAndReport);
}
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}, 3000);
} else {
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console.log('no tunnel, starting anew');
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rawTunnel(saveAndReport);
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}
return;
}
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if (/restart/.test(opts.pathname)) {
tun.end();
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res.setHeader('Content-Type', 'application/json');
res.end(JSON.stringify({ success: true }));
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controlServer.close(function () {
// TODO closeAll other things
process.nextTick(function () {
// system daemon will restart the process
process.exit(22); // use non-success exit code
});
});
return;
}
//
// Check for proper config
//
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if (!state.config.relay || !state.config.email || !state.config.agreeTos) {
res.statusCode = 400;
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res.setHeader('Content-Type', 'application/json');
res.end(JSON.stringify({
error: { code: "E_CONFIG", message: "Invalid config file. Please run 'telebit init'" }
}));
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return;
}
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//
// With proper config
//
if (/http/.test(opts.pathname)) {
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controllers.http(req, res, opts);
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return;
}
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if (/tcp/.test(opts.pathname)) {
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controllers.tcp(req, res, opts);
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return;
}
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if (/save|commit/.test(opts.pathname)) {
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state.config.servernames = state.servernames;
state.config.ports = state.ports;
fs.writeFile(confpath, YAML.safeDump(snakeCopy(state.config)), function (err) {
if (err) {
res.statusCode = 500;
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res.setHeader('Content-Type', 'application/json');
res.end(JSON.stringify({
"error":{"message":"Could not save config file. Perhaps you're not running as root?"}
}));
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return;
}
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listSuccess();
});
return;
}
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if (/ssh/.test(opts.pathname)) {
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controllers.ssh(req, res, opts);
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return;
}
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if (/enable/.test(opts.pathname)) {
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delete state.config.disable;// = undefined;
if (tun) {
listSuccess();
return;
}
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rawTunnel(function (err, _tun) {
if (err) { throw err; }
tun = _tun;
fs.writeFile(confpath, YAML.safeDump(snakeCopy(state.config)), function (err) {
if (err) {
res.statusCode = 500;
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res.setHeader('Content-Type', 'application/json');
res.end(JSON.stringify({
error: { message: "Could not save config file. Perhaps you're user doesn't have permission?" }
}));
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return;
}
listSuccess();
});
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});
return;
}
if (/disable/.test(opts.pathname)) {
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state.config.disable = true;
if (tun) { tun.end(); tun = null; }
fs.writeFile(confpath, YAML.safeDump(snakeCopy(state.config)), function (err) {
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res.setHeader('Content-Type', 'application/json');
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if (err) {
res.statusCode = 500;
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res.end(JSON.stringify({
"error":{"message":"Could not save config file. Perhaps you're not running as root?"}
}));
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return;
}
res.end('{"success":true}');
});
return;
}
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if (/status/.test(opts.pathname)) {
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res.setHeader('Content-Type', 'application/json');
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res.end(JSON.stringify(
{ status: (state.config.disable ? 'disabled' : 'enabled')
, ready: ((state.config.relay && (state.config.token || state.config.agreeTos)) ? true : false)
}
));
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return;
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}
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if (/list/.test(opts.pathname)) {
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listSuccess();
return;
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}
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res.setHeader('Content-Type', 'application/json');
res.end(JSON.stringify({"error":{"message":"unrecognized rpc"}}));
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});
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if (fs.existsSync(state._ipc.path)) {
fs.unlinkSync(state._ipc.path);
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}
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// mask is so that processes owned by other users
// can speak to this process, which is probably root-owned
var oldUmask = process.umask(0x0000);
var serverOpts = {
writableAll: true
, readableAll: true
, exclusive: false
};
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if ('socket' === state._ipc.type) {
require('mkdirp').sync(path.dirname(state._ipc.path));
}
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// https://nodejs.org/api/net.html#net_server_listen_options_callback
// path is ignore if port is defined
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// https://git.coolaj86.com/coolaj86/telebit.js/issues/23#issuecomment-326
if (state._ipc.port) {
serverOpts.host = 'localhost';
serverOpts.port = state._ipc.port;
} else {
serverOpts.path = state._ipc.path;
}
controlServer.listen(serverOpts, function () {
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process.umask(oldUmask);
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var address = this.address();
if (address.port) {
common.setPort(state.config, address.port);
}
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//console.log(this.address());
console.info("[info] Listening for commands on", address);
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});
}
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function serveControls() {
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if (state.config.disable) {
console.info("[info] starting disabled");
return;
}
if (state.config.relay && (state.config.token || state.config.pretoken)) {
console.info("[info] connecting with stored token");
rawTunnel(function (err, _tun) {
if (err) { throw err; }
if (_tun) { tun = _tun; }
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setTimeout(function () {
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// TODO attach handler to tunnel
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serveControlsHelper();
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}, 150);
});
return;
} else {
console.info("[info] waiting for init/authentication (missing relay and/or token)");
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}
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serveControlsHelper();
}
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function parseConfig(err, text) {
function run() {
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if (!state.config) {
state.config = {};
}
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common._init(
state.config.root || path.join(os.homedir(), '.local/share/telebit') // || path.join(__dirname, '..')
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, (state.config.root && path.join(state.config.root, 'etc')) || path.resolve(common.DEFAULT_CONFIG_PATH, '..')
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);
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state._ipc = common.pipename(state.config, true);
console.info('');
console.info(verstr.join(' '));
if (!state.config.sock) {
console.info('(' + state._ipc.comment + ': "' + state._ipc.path + '")');
}
console.info('');
state.token = state.token || state.config.token || token;
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state.pretoken = state.pretoken || state.config.pretoken;
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state._confpath = confpath;
if (!state.config.servernames) {
state.config.servernames = {};
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}
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if (!state.config.ports) {
state.config.ports = {};
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}
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state.servernames = JSON.parse(JSON.stringify(state.config.servernames));
state.ports = JSON.parse(JSON.stringify(state.config.ports));
serveControls();
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}
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try {
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state.config = JSON.parse(text || '{}');
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} catch(e1) {
try {
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state.config = YAML.safeLoad(text || '{}');
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} catch(e2) {
console.error(e1.message);
console.error(e2.message);
process.exit(1);
return;
}
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}
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state.config = camelCopy(state.config || {}) || {};
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run();
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if ((err && 'ENOENT' === err.code) || !Object.keys(state.config).length) {
if (!err || 'ENOENT' === err.code) {
console.warn("Empty config file. Run 'telebit init' to configure.\n");
} else {
console.warn("Couldn't load config:\n\n\t" + err.message + "\n");
}
}
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}
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function rawTunnel(rawCb) {
if (state.config.disable || !state.config.relay || !(state.config.token || state.config.agreeTos)) {
rawCb(null, null);
return;
}
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state.relay = state.config.relay;
if (!state.relay) {
rawCb(new Error("'" + state._confpath + "' is missing 'relay'"));
return;
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}
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if (!(state.token || state.pretoken)) {
rawCb(null, null);
return;
}
if (tun) {
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rawCb(null, tun);
return;
}
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common.api.wss(state, function (err, wss) {
if (err) { rawCb(err); return; }
state.wss = wss;
// Saves the token
// state.handlers.access_token({ jwt: token });
// Adds the token to the connection
// tun.append(token);
state.greenlockConf = state.config.greenlock || {};
state.sortingHat = state.config.sortingHat;
// TODO sortingHat.print(); ?
// TODO Check undefined vs false for greenlock config
var remote = require('../');
state.greenlockConfig = {
version: state.greenlockConf.version || 'draft-11'
, server: state.greenlockConf.server || 'https://acme-v02.api.letsencrypt.org/directory'
, communityMember: state.greenlockConf.communityMember || state.config.communityMember
, telemetry: state.greenlockConf.telemetry || state.config.telemetry
, configDir: state.greenlockConf.configDir
|| (state.config.root && path.join(state.config.root, 'etc/acme'))
|| path.join(os.homedir(), '.config/telebit/acme')
// TODO, store: require(state.greenlockConf.store.name || 'le-store-certbot').create(state.greenlockConf.store.options || {})
, approveDomains: function (opts, certs, cb) {
// Certs being renewed are listed in certs.altnames
if (certs) {
opts.domains = certs.altnames;
cb(null, { options: opts, certs: certs });
return;
}
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// Even though it's being tunneled by a trusted source
// we need to make sure we don't get rate-limit spammed
// with wildcard domains
// TODO: finish implementing dynamic dns for wildcard certs
if (getServername(state.servernames, opts.domains[0])) {
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opts.email = state.greenlockConf.email || state.config.email;
opts.agreeTos = state.greenlockConf.agree || state.greenlockConf.agreeTos || state.config.agreeTos;
cb(null, { options: opts, certs: certs });
return;
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}
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//cb(new Error("servername not found in allowed list"));
}
};
state.insecure = state.config.relay_ignore_invalid_certificates;
// { relay, config, servernames, ports, sortingHat, net, insecure, token, handlers, greenlockConfig }
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console.log("[DEBUG] token", typeof token, token);
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tun = remote.connect({
relay: state.relay
, wss: state.wss
, config: state.config
, otp: state.otp
, sortingHat: state.sortingHat
, net: state.net
, insecure: state.insecure
, token: state.token || state.pretoken // instance
, servernames: state.servernames
, ports: state.ports
, handlers: state.handlers
, greenlockConfig: state.greenlockConfig
});
rawCb(null, tun);
});
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}
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state.handlers = {
grant: function (grants) {
console.info("");
console.info("Connect to your device by any of the following means:");
console.info("");
grants.forEach(function (arr) {
if ('https' === arr[0]) {
if (!state.servernames[arr[1]]) {
state.servernames[arr[1]] = {};
}
state.servernames[arr[1]].wildcard = true;
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} else if ('tcp' === arr[0]) {
if (!state.ports[arr[2]]) {
state.ports[arr[2]] = {};
}
}
if ('ssh+https' === arr[0]) {
console.info("SSH+HTTPS");
} else if ('ssh' === arr[0]) {
console.info("SSH");
} else if ('tcp' === arr[0]) {
console.info("TCP");
} else if ('https' === arr[0]) {
console.info("HTTPS");
}
console.info('\t' + arr[0] + '://' + arr[1] + (arr[2] ? (':' + arr[2]) : ''));
if ('ssh+https' === arr[0]) {
console.info("\tex: ssh -o ProxyCommand='openssl s_client -connect %h:%p -servername %h -quiet' " + arr[1] + " -p 443\n");
} else if ('ssh' === arr[0]) {
console.info("\tex: ssh " + arr[1] + " -p " + arr[2] + "\n");
} else if ('tcp' === arr[0]) {
console.info("\tex: netcat " + arr[1] + " " + arr[2] + "\n");
} else if ('https' === arr[0]) {
console.info("\tex: curl https://" + arr[1] + "\n");
}
});
}
, access_token: function (opts) {
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if ('undefined' === opts.jwt || !opts.jwt) {
console.error("Granted empty access token... ??");
console.error(JSON.stringify(opts));
return;
}
state.token = opts.jwt || opts.access_token;
state.config.token = opts.jwt || opts.access_token;
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console.info("Updating '" + tokenpath + "' with new token:");
try {
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fs.writeFileSync(tokenpath, opts.jwt);
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fs.writeFileSync(confpath, YAML.safeDump(snakeCopy(state.config)));
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} catch (e) {
console.error("Token not saved:");
console.error(e);
}
}
};
function sigHandler() {
console.info('Received kill signal. Attempting to exit cleanly...');
// We want to handle cleanup properly unless something is broken in our cleanup process
// that prevents us from exitting, in which case we want the user to be able to send
// the signal again and exit the way it normally would.
process.removeListener('SIGINT', sigHandler);
if (tun) {
tun.end();
}
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if (controlServer) {
controlServer.close();
}
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cancelUpdater();
}
// reverse 2FA otp
process.on('SIGINT', sigHandler);
state.net = state.net || {
createConnection: function (info, cb) {
// data is the hello packet / first chunk
// info = { data, servername, port, host, remoteFamily, remoteAddress, remotePort }
var net = require('net');
// socket = { write, push, end, events: [ 'readable', 'data', 'error', 'end' ] };
var socket = net.createConnection({ port: info.port, host: info.host }, cb);
return socket;
}
};
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fs.readFile(confpath, 'utf8', parseConfig);
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}());