telebit.js/bin/telebit-remote.js

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#!/usr/bin/env node
(function () {
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'use strict';
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var pkg = require('../package.json');
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var os = require('os');
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//var url = require('url');
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var fs = require('fs');
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var path = require('path');
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//var https = require('https');
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var YAML = require('js-yaml');
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var TOML = require('toml');
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var TPLS = TOML.parse(fs.readFileSync(path.join(__dirname, "../lib/en-us.toml"), 'utf8'));
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var JWT = require('../lib/jwt.js');
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var keypairs = require('keypairs');
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/*
if ('function' !== typeof TOML.stringify) {
TOML.stringify = require('json2toml');
}
*/
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var recase = require('recase').create({});
var camelCopy = recase.camelCopy.bind(recase);
//var snakeCopy = recase.snakeCopy.bind(recase);
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var urequest = require('@coolaj86/urequest');
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var common = require('../lib/cli-common.js');
var defaultConfPath = path.join(os.homedir(), '.config/telebit');
var defaultConfFile = path.join(defaultConfPath, 'telebit.yml');
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var argv = process.argv.slice(2);
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var argIndex = argv.indexOf('--config');
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if (-1 === argIndex) {
argIndex = argv.indexOf('-c');
}
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var confpath;
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var useTty;
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var state = {};
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if (-1 === argIndex) {
argIndex = argv.indexOf('-c');
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}
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if (-1 !== argIndex) {
confpath = argv.splice(argIndex, 2)[1];
state.configArg = confpath;
// shortname
if (state.configArg) {
if (/^[\w:\.\-]+$/.test(state.configArg)) {
state.configDir = defaultConfPath;
state.configFile = path.join(defaultConfPath, confpath + '.yml');
} else if (/[\/\\]$/.test(state.configArg)) {
state.configDir = state.configArg;
state.configFile = path.join(state.configDir, 'telebit.yml');
} else if (/[\/\\][^\.\/\\]\.[^\.\/\\]$/.test(state.configArg)) {
state.configDir = path.pathname(state.configArg);
state.configFile = state.configArg;
} else {
console.error();
console.error("Not a valid config path, file, or shortname: '%s'", state.configArg);
console.error();
console.error("Valid config options look like this:");
console.error(" Full path: ~/.config/telebit/telebit.yml (full path)");
console.error(" Directory: ~/.config/telebit/ (directory)");
console.error(" Shortname: lucky-duck (shortname)");
process.exit(37);
}
confpath = state.configFile;
}
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}
argIndex = argv.indexOf('--tty');
if (-1 !== argIndex) {
useTty = argv.splice(argIndex, 1);
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}
function help() {
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var keys = Object.keys(TPLS.help).filter(function (key) {
return 'remote' !== key;
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});
var key = keys.filter(function (key) {
return -1 !== process.argv.indexOf(key);
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})[0] || 'remote';
console.info(TPLS.help[key].replace(/{version}/g, pkg.version));
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}
var verstr = [ pkg.name + ' remote v' + pkg.version ];
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if (!confpath) {
state.configDir = defaultConfPath;
state.configFile = defaultConfFile;
confpath = state.configFile;
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verstr.push('(--config \'' + confpath.replace(new RegExp('^' + os.homedir()), '~') + '\')');
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}
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if ([ '-h', '--help', 'help' ].some(function (arg) {
return -1 !== argv.indexOf(arg);
})) {
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help();
process.exit(0);
}
if (!confpath || /^--/.test(confpath)) {
help();
process.exit(1);
}
function askForConfig(state, mainCb) {
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var fs = require('fs');
var ttyname = '/dev/tty';
var stdin = useTty ? fs.createReadStream(ttyname, {
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fd: fs.openSync(ttyname, fs.constants.O_RDONLY | fs.constants.O_NOCTTY)
}) : process.stdin;
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var readline = require('readline');
var rl = readline.createInterface({
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input: stdin
, output: process.stdout
// https://github.com/nodejs/node/issues/21771
// https://github.com/nodejs/node/issues/21319
, terminal: !/^win/i.test(os.platform()) && !useTty
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});
state._useTty = useTty;
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// NOTE: Use of setTimeout
// We're using setTimeout just to make the user experience a little
// nicer, as if we're doing something inbetween steps, so that it
// is a smooth rather than jerky experience.
// >= 300ms is long enough to become distracted and change focus (a full blink, time for an idea to form as a thought)
// <= 100ms is shorter than normal human reaction time (ability to place events chronologically, which happened first)
// ~ 150-250ms is the sweet spot for most humans (long enough to notice change and not be jarred, but stay on task)
var firstSet = [
function askEmail(cb) {
if (state.config.email) { cb(); return; }
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console.info(TPLS.remote.setup.email);
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// TODO attempt to read email from npmrc or the like?
rl.question('email: ', function (email) {
email = /@/.test(email) && email.trim();
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if (!email) { askEmail(cb); return; }
state.config.email = email.trim();
state.config.agreeTos = true;
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console.info("");
setTimeout(cb, 250);
});
}
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, function askRelay(cb) {
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function checkRelay(relay) {
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// TODO parse and check https://{{relay}}/.well-known/telebit.cloud/directives.json
if (!relay) { relay = 'telebit.cloud'; }
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relay = relay.trim();
var urlstr = common.parseUrl(relay) + common.apiDirectory;
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urequest({ url: urlstr, json: true }, function (err, resp, body) {
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if (err) {
console.error("[Network Error] Failed to retrieve '" + urlstr + "'");
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console.error(err);
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askRelay(cb);
return;
}
if (200 !== resp.statusCode || (Buffer.isBuffer(body) || 'object' !== typeof body) || !body.api_host) {
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console.warn(TPLS.remote.setup.fail_relay_check
.replace(/{{\s*status_code\s*}}/, resp.statusCode)
.replace(/{{\s*url\s*}}/, urlstr)
);
console.warn(body);
} else if (body && body.pair_request) {
state._can_pair = true;
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}
state.config.relay = relay;
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cb();
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});
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}
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if (state.config.relay) { checkRelay(state.config.relay); return; }
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console.info("");
console.info("");
console.info("What relay will you be using? (press enter for default)");
console.info("");
rl.question('relay [default: telebit.cloud]: ', checkRelay);
}
, function checkRelay(cb) {
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nextSet = [];
if ('telebit.cloud' !== state.config.relay) {
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nextSet = nextSet.concat(standardSet);
}
if (!state._can_pair) {
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nextSet = nextSet.concat(fossSet);
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}
cb();
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}
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];
var standardSet = [
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// There are questions that we need to ask in the CLI
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// if we can't guarantee that they are being asked in the web interface
function askAgree(cb) {
if (state.config.agreeTos) { cb(); return; }
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console.info("");
console.info("");
console.info("Do you accept the terms of service for each and all of the following?");
console.info("");
console.info("\tTelebit - End-to-End Encrypted Relay");
console.info("\tGreenlock - Automated HTTPS");
console.info("\tLet's Encrypt - TLS Certificates");
console.info("");
console.info("Type 'y' or 'yes' to accept these Terms of Service.");
console.info("");
rl.question('agree to all? [y/N]: ', function (resp) {
resp = resp.trim();
if (!/^y(es)?$/i.test(resp) && 'true' !== resp) {
throw new Error("You didn't accept the Terms of Service... not sure what to do...");
}
state.config.agreeTos = true;
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console.info("");
setTimeout(cb, 250);
});
}
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, function askUpdates(cb) {
// required means transactional, security alerts, mandatory updates
var options = [ 'newsletter', 'important', 'required' ];
if (-1 !== options.indexOf(state._updates)) { cb(); return; }
console.info("");
console.info("");
console.info("What updates would you like to receive? (" + options.join(',') + ")");
console.info("");
rl.question('messages (default: important): ', function (updates) {
state._updates = (updates || '').trim().toLowerCase();
if (!state._updates) { state._updates = 'important'; }
if (-1 === options.indexOf(state._updates)) { askUpdates(cb); return; }
if ('newsletter' === state._updates) {
state.config.newsletter = true;
state.config.communityMember = true;
} else if ('important' === state._updates) {
state.config.communityMember = true;
}
setTimeout(cb, 250);
});
}
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, function askTelemetry(cb) {
if (state.config.telemetry) { cb(); return; }
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console.info("");
console.info("");
console.info("Contribute project telemetry data? (press enter for default [yes])");
console.info("");
rl.question('telemetry [Y/n]: ', function (telemetry) {
if (!telemetry || /^y(es)?$/i.test(telemetry)) {
state.config.telemetry = true;
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}
setTimeout(cb, 250);
});
}
];
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var fossSet = [
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function askTokenOrSecret(cb) {
if (state._can_pair || state.token || state.config.token
|| state.secret || state.config.secret) { cb(); return; }
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console.info("");
console.info("");
console.info("What's your authorization for '" + state.config.relay + "'?");
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console.info("");
// TODO check .well-known to learn supported token types
console.info("Currently supported:");
console.info("");
console.info("\tToken (JWT format)");
console.info("\tShared Secret (HMAC hex)");
//console.info("\tPrivate key (hex)");
console.info("");
rl.question('auth: ', function (resp) {
resp = (resp || '').trim();
try {
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JWT.decode(resp);
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state.config.token = resp;
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} catch(e) {
// is not jwt
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}
if (!state.config.token) {
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resp = resp.toLowerCase();
if (resp === Buffer.from(resp, 'hex').toString('hex')) {
state.config.secret = resp;
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}
}
if (!state.config.token && !state.config.secret) {
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askTokenOrSecret(cb);
return;
}
setTimeout(cb, 250);
});
}
, function askServernames(cb) {
if (!state.config.secret || state.config._servernames) { cb(); return; }
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console.info("");
console.info("");
console.info("What servername(s) will you be relaying here?");
console.info("(use a comma-separated list such as example.com,example.net)");
console.info("");
rl.question('domain(s): ', function (resp) {
resp = (resp || '').trim().split(/,/g);
if (!resp.length) { askServernames(); return; }
// TODO validate the domains
state.config._servernames = resp;
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setTimeout(cb, 250);
});
}
, function askPorts(cb) {
if (!state.config.secret || state.config._ports) { cb(); return; }
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console.info("");
console.info("");
console.info("What tcp port(s) will you be relaying here?");
console.info("(use a comma-separated list such as 2222,5050)");
console.info("");
rl.question('port(s) [default:none]: ', function (resp) {
resp = (resp || '').trim().split(/,/g);
if (!resp.length) { askPorts(); return; }
// TODO validate the domains
state.config._ports = resp;
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setTimeout(cb, 250);
});
}
];
var nextSet = firstSet;
function next() {
var q = nextSet.shift();
if (!q) {
// https://github.com/nodejs/node/issues/21319
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if (useTty) { try { stdin.push(null); } catch(e) { /*ignore*/ } }
rl.close();
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if (useTty) { try { stdin.close(); } catch(e) { /*ignore*/ } }
mainCb(null, state);
return;
}
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q(next);
}
next();
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}
var RC;
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function parseConfig(err, text) {
function handleConfig(err, config) {
if (err) { throw err; }
state.config = config;
var verstrd = [ pkg.name + ' daemon v' + state.config.version ];
if (state.config.version && state.config.version !== pkg.version) {
console.info(verstr.join(' '), verstrd.join(' '));
} else {
console.info(verstr.join(' '));
}
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if (err) {
if ('ENOENT' === err.code || 'ECONNREFUSED' === err.code) {
console.error("Either the telebit service was not already (and could not be started) or its socket could not be written to.");
console.error(err);
} else if ('ENOTSOCK' === err.code) {
console.error(err);
return;
} else {
console.error(err);
}
process.exit(101);
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return;
}
//
// check for init first, before anything else
// because it has arguments that may help in
// the next steps
//
if (-1 !== argv.indexOf('init')) {
parsers.init(argv, function (err) {
if (err) {
console.error("Error while initializing config [init]:");
throw err;
}
getToken(function (err) {
if (err) {
console.error("Error while getting token [init]:");
throw err;
}
parseCli(state);
});
});
return;
}
if (!state.config.relay || !state.config.token) {
if (!state.config.relay) {
state.config.relay = 'telebit.cloud';
}
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//console.log("question the user?", Date.now());
askForConfig(state, function (err, state) {
// no errors actually get passed, so this is just future-proofing
if (err) { throw err; }
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if (!state.config.token && state._can_pair) {
state.config._otp = common.otp();
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}
//console.log("done questioning:", Date.now());
if (!state.token && !state.config.token) {
if (err) {
console.error("Error while initializing config [init]:");
throw err;
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}
getToken(function (err) {
if (err) {
console.error("Error while getting token [init]:");
throw err;
}
parseCli(state);
});
} else {
parseCli(state);
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}
});
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return;
}
//console.log("no questioning:");
parseCli(state);
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}
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function parseCli(/*state*/) {
var special = [
'false', 'none', 'off', 'disable'
, 'true', 'auto', 'on', 'enable'
];
if (-1 !== argv.indexOf('init')) {
RC.request({ service: 'list', method: 'POST', data: [] }, handleRemoteRequest('list'));
return;
}
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if ([ 'ssh', 'http', 'tcp' ].some(function (key) {
if (key !== argv[0]) {
return false;
}
if (argv[1]) {
if (String(argv[1]) === String(parseInt(argv[1], 10))) {
// looks like a port
argv[1] = parseInt(argv[1], 10);
} else if (/\/|\\/.test(argv[1])) {
// looks like a path
argv[1] = path.resolve(argv[1]);
// TODO make a default assignment here
} else if (-1 === special.indexOf(argv[1])) {
console.error("Not sure what you meant by '" + argv[1] + "'.");
console.error("Remember: paths should begin with ." + path.sep + ", like '." + path.sep + argv[1] + "'");
return true;
}
RC.request({ service: argv[0], method: 'POST', data: argv.slice(1) }, handleRemoteRequest(argv[0]));
return true;
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}
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help();
return true;
})) {
return;
}
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// Two styles:
// http 3000
// http modulename
function makeRpc(key) {
if (key !== argv[0]) {
return false;
}
RC.request({ service: argv[0], method: 'POST', data: argv.slice(1) }, handleRemoteRequest(argv[0]));
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return true;
}
if ([ 'status', 'enable', 'disable', 'restart', 'list', 'save' ].some(makeRpc)) {
return;
}
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help();
process.exit(11);
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}
try {
state._clientConfig = JSON.parse(text || '{}');
} catch(e1) {
try {
state._clientConfig = YAML.safeLoad(text || '{}');
} catch(e2) {
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try {
state._clientConfig = TOML.parse(text || '');
} catch(e3) {
console.error(e1.message);
console.error(e2.message);
process.exit(1);
return;
}
}
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}
state._clientConfig = camelCopy(state._clientConfig || {}) || {};
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RC = require('../lib/rc/index.js').create(state);
if (!Object.keys(state._clientConfig).length) {
console.info('(' + state._ipc.comment + ": " + state._ipc.path + ')');
console.info("");
}
if ((err && 'ENOENT' === err.code) || !Object.keys(state._clientConfig).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");
}
}
function handleRemoteRequest(service, fn) {
return function (err, body) {
if ('function' === typeof fn) {
fn(err, body); // XXX was resp
return;
}
console.info("");
if (err) {
console.warn("'" + service + "' may have failed."
+ " Consider peaking at the logs either with 'journalctl -xeu telebit' or /opt/telebit/var/log/error.log");
console.warn(err.statusCode, err.message);
//cb(new Error("not okay"), body);
return;
}
if (!body) {
console.info("👌");
return;
}
try {
body = JSON.parse(body);
} catch(e) {
// ignore
}
if ("AWAIT_AUTH" === body.code) {
console.info(body.message);
} else if ("CONFIG" === body.code) {
delete body.code;
//console.info(TOML.stringify(body));
console.info(YAML.safeDump(body));
} else {
if ('http' === body.module) {
// TODO we'll support slingshot-ing in the future
if (body.local) {
if (String(body.local) === String(parseInt(body.local, 10))) {
console.info('> Forwarding https://' + body.remote + ' => localhost:' + body.local);
} else {
console.info('> Serving ' + body.local + ' as https://' + body.remote);
}
} else {
console.info('> Rejecting End-to-End Encrypted HTTPS for now');
}
} else if ('tcp' === body.module) {
if (body.local) {
console.info('> Forwarding ' + state.config.relay + ':' + body.remote + ' => localhost:' + body.local);
} else {
console.info('> Rejecting Legacy TCP');
}
} else if ('ssh' === body.module) {
//console.info('> Forwarding ' + state.config.relay + ' -p ' + JSON.stringify(body) + ' => localhost:' + body.local);
if (body.local) {
console.info('> Forwarding ssh+https (openssl proxy) => localhost:' + body.local);
} else {
console.info('> Rejecting SSH-over-HTTPS for now');
}
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} else if ('status' === body.module) {
// TODO funny one this one
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if (body.port) {
console.info('http://localhost:' + (body.port));
}
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console.info(JSON.stringify(body, null, 2));
} else {
console.info(JSON.stringify(body, null, 2));
}
console.info();
}
};
}
function getToken(fn) {
state.relay = state.config.relay;
// { _otp, config: {} }
common.api.token(state, {
error: function (err/*, next*/) {
console.error("[Error] common.api.token:");
console.error(err);
return;
}
, directory: function (dir, next) {
//console.log('[directory] Telebit Relay Discovered:');
//console.log(dir);
state._apiDirectory = dir;
next();
}
, tunnelUrl: function (tunnelUrl, next) {
//console.log('[tunnelUrl] Telebit Relay Tunnel Socket:', tunnelUrl);
state.wss = tunnelUrl;
next();
}
, requested: function (authReq, next) {
//console.log("[requested] Pairing Requested");
state.config._otp = state.config._otp = authReq.otp;
if (!state.config.token && state._can_pair) {
console.info(TPLS.remote.code.replace(/0000/g, state.config._otp));
}
next();
}
, connect: function (pretoken, next) {
//console.log("[connect] Enabling Pairing Locally...");
state.config.pretoken = pretoken;
state._connecting = true;
// TODO use php-style object querification
RC.request({ service: 'config', method: 'POST', data: state.config }, handleRemoteRequest('config', function (err/*, body*/) {
if (err) {
state._error = err;
console.error("Error while initializing config [connect]:");
console.error(err);
return;
}
console.info("waiting...");
next();
}));
}
, offer: function (token, next) {
//console.log("[offer] Pairing Enabled by Relay");
state.config.token = token;
if (state._error) {
return;
}
state._connecting = true;
try {
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JWT.decode(token);
//console.log(JWT.decode(token));
} catch(e) {
console.warn("[warning] could not decode token");
}
RC.request({ service: 'config', method: 'POST', data: state.config }, handleRemoteRequest('config', function (err/*, body*/) {
if (err) {
state._error = err;
console.error("Error while initializing config [offer]:");
console.error(err);
return;
}
//console.log("Pairing Enabled Locally");
next();
}));
}
, granted: function (_, next) {
//console.log("[grant] Pairing complete!");
next();
}
, end: function () {
RC.request({ service: 'enable', method: 'POST', data: [] }, handleRemoteRequest('enable', function (err) {
if (err) { console.error(err); return; }
console.info("Success");
// workaround for https://github.com/nodejs/node/issues/21319
if (state._useTty) {
setTimeout(function () {
console.info("Some fun things to try first:\n");
console.info(" ~/telebit http ~/public");
console.info(" ~/telebit tcp 5050");
console.info(" ~/telebit ssh auto");
console.info();
console.info("Press any key to continue...");
console.info();
process.exit(0);
}, 0.5 * 1000);
return;
}
// end workaround
//parseCli(state);
fn();
}));
}
});
}
RC.request({ service: 'config', method: 'GET' }, handleConfig);
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}
var parsers = {
init: function (argv, parseCb) {
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var answers = {};
var boolish = [ '--advanced' ];
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if ('init' !== argv[0]) {
throw new Error("init must be the first argument");
}
argv.shift();
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// init --foo bar
argv.forEach(function (arg, i) {
if (!/^--/.test(arg)) { return; }
if (-1 !== boolish.indexOf(arg)) {
answers['_' + arg.replace(/^--/, '')] = true;
}
if (/^-/.test(argv[i + 1])) {
throw new Error(argv[i + 1] + ' requires an argument');
}
answers[arg] = argv[i + 1];
});
// init foo:bar
argv.forEach(function (arg) {
if (/^--/.test(arg)) { return; }
var parts = arg.split(/:/g);
if (2 !== parts.length) {
throw new Error("bad option to init: '" + arg + "'");
}
if (answers[parts[0]]) {
throw new Error("duplicate key to init '" + parts[0] + "'");
}
answers[parts[0]] = parts[1];
});
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if (answers.relay) {
console.info("using --relay " + answers.relay);
}
// things that aren't straight-forward copy-over
if (!answers.advanced && !answers.relay) {
answers.relay = 'telebit.cloud';
}
if (Array.isArray(common._NOTIFICATIONS[answers.update])) {
common._NOTIFICATIONS[answers.update].forEach(function (name) {
state.config[name] = true;
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});
}
if (answers.servernames) {
state.config._servernames = answers.servernames;
}
if (answers.ports) {
state.config._ports = answers.ports;
}
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// things that are straight-forward copy-over
common.CONFIG_KEYS.forEach(function (key) {
if ('true' === answers[key]) { answers[key] = true; }
if ('false' === answers[key]) { answers[key] = false; }
if ('null' === answers[key]) { answers[key] = null; }
if ('undefined' === answers[key]) { delete answers[key]; }
if ('undefined' !== typeof answers[key]) {
state.config[key] = answers[key];
}
});
askForConfig(state, function (err, state) {
if (err) { parseCb(err); return; }
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if (!state.config.token && state._can_pair) {
state.config._otp = common.otp();
}
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argv.unshift('init');
parseCb(null, state);
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});
}
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};
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var keystore = require('../lib/keystore.js').create(state);
state.keystore = keystore;
state.keystoreSecure = !keystore.insecure;
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keystore.all().then(function (list) {
var keyext = '.key.jwk.json';
var key;
// TODO create map by account and index into that map to get the master key
// and sort keys in the process
list.some(function (el) {
if (keyext === el.account.slice(-keyext.length)
&& el.password.kty && el.password.kid) {
key = el.password;
return true;
}
});
if (key) {
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state.key = key;
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state.pub = keypairs.neuter({ jwk: key });
fs.readFile(confpath, 'utf8', parseConfig);
return;
}
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return keypairs.generate().then(function (pair) {
var jwk = pair.private;
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return keypairs.thumbprint({ jwk: jwk }).then(function (kid) {
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jwk.kid = kid;
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return keystore.set(kid + keyext, jwk).then(function () {
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var size = (jwk.crv || Buffer.from(jwk.n, 'base64').byteLength * 8);
console.info("Generated new %s %s private key with thumbprint %s", jwk.kty, size, kid);
state.key = jwk;
fs.readFile(confpath, 'utf8', parseConfig);
});
});
});
});
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}());