'use strict';
var DAY = 24 * 60 * 60 * 1000;
//var MIN = 60 * 1000;
var ACME = require('acme-v2/compat').ACME;
var pkg = require('./package.json');
var PromiseA;
try {
PromiseA = require('bluebird');
} catch(e) {
PromiseA = global.Promise;
}
var util = require('util');
function promisifyAllSelf(obj) {
if (obj.__promisified) { return obj; }
Object.keys(obj).forEach(function (key) {
if ('function' === typeof obj[key] && !/Async$/.test(key)) {
obj[key + 'Async'] = util.promisify(obj[key]);
}
});
obj.__promisified = true;
return obj;
}
var Greenlock = module.exports;
Greenlock.Greenlock = Greenlock;
Greenlock.LE = Greenlock;
// in-process cache, shared between all instances
var ipc = {};
function _log(debug) {
if (debug) {
var args = Array.prototype.slice.call(arguments);
args.shift();
args.unshift("[gl/index.js]");
console.log.apply(console, args);
}
}
Greenlock.defaults = {
productionServerUrl: 'https://acme-v01.api.letsencrypt.org/directory'
, stagingServerUrl: 'https://acme-staging.api.letsencrypt.org/directory'
, rsaKeySize: ACME.rsaKeySize || 2048
, challengeType: ACME.challengeType || 'http-01'
, challengeTypes: ACME.challengeTypes || [ 'http-01', 'dns-01' ]
, acmeChallengePrefix: ACME.acmeChallengePrefix
};
// backwards compat
Object.keys(Greenlock.defaults).forEach(function (key) {
Greenlock[key] = Greenlock.defaults[key];
});
// show all possible options
var u; // undefined
Greenlock._undefined = {
acme: u
, store: u
//, challenge: u
, challenges: u
, sni: u
, tlsOptions: u
, register: u
, check: u
, renewWithin: u // le-auto-sni and core
//, renewBy: u // le-auto-sni
, acmeChallengePrefix: u
, rsaKeySize: u
, challengeType: u
, server: u
, version: u
, agreeToTerms: u
, _ipc: u
, duplicate: u
, _acmeUrls: u
};
Greenlock._undefine = function (gl) {
Object.keys(Greenlock._undefined).forEach(function (key) {
if (!(key in gl)) {
gl[key] = u;
}
});
return gl;
};
Greenlock.create = function (gl) {
gl.store = gl.store || require('le-store-certbot').create({
debug: gl.debug
, configDir: gl.configDir
, logsDir: gl.logsDir
, webrootPath: gl.webrootPath
});
gl.core = require('./lib/core');
var log = gl.log || _log;
if (!gl.challenges) {
gl.challenges = {};
}
if (!gl.challenges['http-01']) {
gl.challenges['http-01'] = require('le-challenge-fs').create({
debug: gl.debug
, webrootPath: gl.webrootPath
});
}
if (!gl.challenges['dns-01']) {
try {
gl.challenges['dns-01'] = require('le-challenge-ddns').create({ debug: gl.debug });
} catch(e) {
try {
gl.challenges['dns-01'] = require('le-challenge-dns').create({ debug: gl.debug });
} catch(e) {
// not yet implemented
}
}
}
gl = Greenlock._undefine(gl);
gl.acmeChallengePrefix = Greenlock.acmeChallengePrefix;
gl.rsaKeySize = gl.rsaKeySize || Greenlock.rsaKeySize;
gl.challengeType = gl.challengeType || Greenlock.challengeType;
gl._ipc = ipc;
gl._communityPackage = gl._communityPackage || 'greenlock.js';
if ('greenlock.js' === gl._communityPackage) {
gl._communityPackageVersion = pkg.version;
} else {
gl._communityPackageVersion = gl._communityPackageVersion || ('greenlock.js-' + pkg.version);
}
gl.agreeToTerms = gl.agreeToTerms || function (args, agreeCb) {
agreeCb(new Error("'agreeToTerms' was not supplied to Greenlock and 'agreeTos' was not supplied to Greenlock.register"));
};
if (!gl.renewWithin) { gl.renewWithin = 14 * DAY; }
// renewBy has a default in le-sni-auto
///////////////////////////
// BEGIN VERSION MADNESS //
///////////////////////////
gl.version = gl.version || 'draft-11';
gl.server = gl.server || 'https://acme-v02.api.letsencrypt.org/directory';
if (!gl.version) {
//console.warn("Please specify version: 'v01' (Let's Encrypt v1) or 'draft-12' (Let's Encrypt v2 / ACME draft 12)");
console.warn("");
console.warn("");
console.warn("");
console.warn("==========================================================");
console.warn("== greenlock.js (v2.2.0+) ==");
console.warn("==========================================================");
console.warn("");
console.warn("Please specify 'version' option:");
console.warn("");
console.warn(" 'draft-12' for Let's Encrypt v2 and ACME draft 12");
console.warn(" ('v02' is an alias of 'draft-12'");
console.warn("");
console.warn("or");
console.warn("");
console.warn(" 'v01' for Let's Encrypt v1 (deprecated)");
console.warn(" (also 'npm install --save le-acme-core' as this legacy dependency will soon be removed)");
console.warn("");
console.warn("This will be required in versions v2.3+");
console.warn("");
console.warn("");
} else if ('v02' === gl.version) {
gl.version = 'draft-11';
} else if ('draft-12' === gl.version) {
gl.version = 'draft-11';
} else if ('draft-11' === gl.version) {
// no-op
} else if ('v01' !== gl.version) {
throw new Error("Unrecognized version '" + gl.version + "'");
}
if (!gl.server) {
throw new Error("opts.server must specify an ACME directory URL, such as 'https://acme-staging-v02.api.letsencrypt.org/directory'");
}
if ('staging' === gl.server || 'production' === gl.server) {
if ('staging' === gl.server) {
gl.server = 'https://acme-staging.api.letsencrypt.org/directory';
gl.version = 'v01';
gl._deprecatedServerName = 'staging';
}
else if ('production' === gl.server) {
gl.server = 'https://acme-v01.api.letsencrypt.org/directory';
gl.version = 'v01';
gl._deprecatedServerName = 'production';
}
console.warn("");
console.warn("");
console.warn("=== WARNING ===");
console.warn("");
console.warn("Due to versioning issues the '" + gl._deprecatedServerName + "' option is deprecated.");
console.warn("Please specify the full url and version.");
console.warn("");
console.warn("For APIs add:");
console.warn("\t, \"version\": \"" + gl.version + "\"");
console.warn("\t, \"server\": \"" + gl.server + "\"");
console.warn("");
console.warn("For the CLI add:");
console.warn("\t--acme-url '" + gl.server + "' \\");
console.warn("\t--acme-version '" + gl.version + "' \\");
console.warn("");
console.warn("");
}
function loadLeV01() {
console.warn("");
console.warn("=== WARNING ===");
console.warn("");
console.warn("Let's Encrypt v1 is deprecated.");
console.warn("Please update to Let's Encrypt v2 (ACME draft 12)");
console.warn("");
try {
return require('le-acme-core').ACME;
} catch(e) {
console.error("");
console.error("=== Error (easy-to-fix) ===");
console.error("");
console.error("Hey, this isn't a big deal, but you need to manually add v1 support:");
console.error("");
console.error(" npm install --save le-acme-core");
console.error("");
console.error("Just run that real quick, restart, and everything will work great.");
console.error("");
console.error("");
process.exit(e.code || 13);
}
}
if (-1 !== [
'https://acme-v02.api.letsencrypt.org/directory'
, 'https://acme-staging-v02.api.letsencrypt.org/directory' ].indexOf(gl.server)
) {
if ('draft-11' !== gl.version) {
console.warn("Detected Let's Encrypt v02 URL. Changing version to draft-12.");
gl.version = 'draft-11';
}
} else if (-1 !== [
'https://acme-v01.api.letsencrypt.org/directory'
, 'https://acme-staging.api.letsencrypt.org/directory' ].indexOf(gl.server)
|| 'v01' === gl.version
) {
if ('v01' !== gl.version) {
console.warn("Detected Let's Encrypt v01 URL (deprecated). Changing version to v01.");
gl.version = 'v01';
}
}
if ('v01' === gl.version) {
ACME = loadLeV01();
}
/////////////////////////
// END VERSION MADNESS //
/////////////////////////
gl.acme = gl.acme || ACME.create({ debug: gl.debug });
if (gl.acme.create) {
gl.acme = gl.acme.create(gl);
}
gl.acme = promisifyAllSelf(gl.acme);
gl._acmeOpts = gl.acme.options || gl.acme.getOptions();
Object.keys(gl._acmeOpts).forEach(function (key) {
if (!(key in gl)) {
gl[key] = gl._acmeOpts[key];
}
});
try {
if (gl.store.create) { gl.store = gl.store.create(gl); }
gl.store = promisifyAllSelf(gl.store);
gl.store.accounts = promisifyAllSelf(gl.store.accounts);
gl.store.certificates = promisifyAllSelf(gl.store.certificates);
gl._storeOpts = gl.store.options || gl.store.getOptions();
} catch(e) {
console.error(e);
console.error("\nPROBABLE CAUSE:\n"
+ "\tYour le-store module should have a create function and return { options, accounts, certificates }\n");
process.exit(18);
return;
}
Object.keys(gl._storeOpts).forEach(function (key) {
if (!(key in gl)) {
gl[key] = gl._storeOpts[key];
}
});
//
// Backwards compat for <= v2.1.7
//
if (gl.challenge) {
console.warn("Deprecated use of gl.challenge. Use gl.challenges['" + Greenlock.challengeType + "'] instead.");
gl.challenges[gl.challengeType] = gl.challenge;
gl.challenge = undefined;
}
Object.keys(gl.challenges||{}).forEach(function (challengeType) {
var challenger = gl.challenges[challengeType];
if (challenger.create) {
challenger = gl.challenges[challengeType] = challenger.create(gl);
}
challenger = gl.challenges[challengeType] = promisifyAllSelf(challenger);
gl['_challengeOpts_' + challengeType] = challenger.options || challenger.getOptions();
Object.keys(gl['_challengeOpts_' + challengeType]).forEach(function (key) {
if (!(key in gl)) {
gl[key] = gl['_challengeOpts_' + challengeType][key];
}
});
// TODO wrap these here and now with tplCopy?
if (!challenger.set || ![5,2,1].includes(challenger.set.length)) {
throw new Error("gl.challenges[" + challengeType + "].set receives the wrong number of arguments."
+ " You must define setChallenge as function (opts) { return Promise.resolve(); }");
}
if (challenger.get && ![4,2,1].includes(challenger.get.length)) {
throw new Error("gl.challenges[" + challengeType + "].get receives the wrong number of arguments."
+ " You must define getChallenge as function (opts) { return Promise.resolve(); }");
}
if (!challenger.remove || ![4,2,1].includes(challenger.remove.length)) {
throw new Error("gl.challenges[" + challengeType + "].remove receives the wrong number of arguments."
+ " You must define removeChallenge as function (opts) { return Promise.resolve(); }");
}
/*
if (!gl._challengeWarn && (!challenger.loopback || 4 !== challenger.loopback.length)) {
gl._challengeWarn = true;
console.warn("gl.challenges[" + challengeType + "].loopback should be defined as function (opts, domain, token, cb) { ... } and should prove (by external means) that the ACME server challenge '" + challengeType + "' will succeed");
}
else if (!gl._challengeWarn && (!challenger.test || 5 !== challenger.test.length)) {
gl._challengeWarn = true;
console.warn("gl.challenges[" + challengeType + "].test should be defined as function (opts, domain, token, keyAuthorization, cb) { ... } and should prove (by external means) that the ACME server challenge '" + challengeType + "' will succeed");
}
*/
});
gl.sni = gl.sni || null;
gl.tlsOptions = gl.tlsOptions || gl.httpsOptions || {};
// Workaround for https://github.com/nodejs/node/issues/22389
gl._updateServernames = function (cert) {
if (!gl._certnames) { gl._certnames = {}; }
// Note: Any given domain could exist on multiple certs
// (especially during renewal where some may be added)
// hence we use a separate object for each domain and list each domain on it
// to get the minimal full set associated with each cert and domain
var allDomains = [cert.subject].concat(cert.altnames.slice(0));
allDomains.forEach(function (name) {
name = name.toLowerCase();
if (!gl._certnames[name]) {
gl._certnames[name] = {};
}
allDomains.forEach(function (name2) {
name2 = name2.toLowerCase();
gl._certnames[name][name2] = true;
});
});
};
gl._checkServername = function (safeHost, servername) {
// odd, but acceptable
if (!safeHost || !servername) { return true; }
if (safeHost === servername) { return true; }
// connection established with servername and session is re-used for allowed name
if (gl._certnames[servername] && gl._certnames[servername][safeHost]) {
return true;
}
return false;
};
if (!gl.tlsOptions.SNICallback) {
if (!gl.getCertificatesAsync && !gl.getCertificates) {
if (Array.isArray(gl.approveDomains)) {
gl.approvedDomains = gl.approveDomains;
gl.approveDomains = null;
}
if (!gl.approveDomains) {
gl.approveDomains = function (lexOpts, cb) {
var err;
var emsg;
if (!gl.email) {
throw new Error("le-sni-auto is not properly configured. Missing email");
}
if (!gl.agreeTos) {
throw new Error("le-sni-auto is not properly configured. Missing agreeTos");
}
if (!/[a-z]/i.test(lexOpts.domain)) {
cb(new Error("le-sni-auto does not allow IP addresses in SNI"));
return;
}
if (!Array.isArray(gl.approvedDomains)) {
// The acme-v2 package uses pre-flight test challenges to
// verify that each requested domain is hosted by the server
// these checks are sufficient for most use cases
return cb(null, lexOpts);
}
if (lexOpts.domains.every(function (domain) {
return -1 !== gl.approvedDomains.indexOf(domain);
})) {
// commented this out because people expect to be able to edit the list of domains
// lexOpts.domains = gl.approvedDomains.slice(0);
lexOpts.email = gl.email;
lexOpts.agreeTos = gl.agreeTos;
lexOpts.communityMember = gl.communityMember;
lexOpts.telemetry = gl.telemetry;
return cb(null, lexOpts);
}
emsg = "tls SNI for '" + lexOpts.domains.join(',') + "' rejected: not in list '" + gl.approvedDomains + "'";
log(gl.debug, emsg, lexOpts.domains, gl.approvedDomains);
err = new Error(emsg);
err.code = 'E_REJECT_SNI';
cb(err);
};
}
gl.getCertificates = function (domain, certs, cb) {
// certs come from current in-memory cache, not lookup
log(gl.debug, 'gl.getCertificates called for', domain, 'with certs for', certs && certs.altnames || 'NONE');
var opts = { domain: domain, domains: certs && certs.altnames || [ domain ], certs: certs };
function cb2(results) {
log(gl.debug, 'gl.approveDomains called with certs for', results.certs && results.certs.altnames || 'NONE', 'and options:');
log(gl.debug, results.options);
var options = results.options || results;
if (results.certs) {
log(gl.debug, 'gl renewing');
return gl.core.certificates.renewAsync(options, results.certs).then(
function (certs) {
// Workaround for https://github.com/nodejs/node/issues/22389
gl._updateServernames(certs);
cb(null, certs);
}
, function (e) {
console.debug("Error renewing certificate for '" + domain + "':");
console.debug(e);
console.error("");
cb(e);
}
);
} else {
log(gl.debug, 'gl getting from disk or registering new');
return gl.core.certificates.getAsync(options).then(
function (certs) {
// Workaround for https://github.com/nodejs/node/issues/22389
gl._updateServernames(certs);
cb(null, certs);
}
, function (e) {
console.debug("Error loading/registering certificate for '" + domain + "':");
console.debug(e);
console.error("");
cb(e);
}
);
}
}
function eb2(_err) {
if (false !== gl.logRejectedDomains) {
console.error("[Error] approveDomains rejected tls sni '" + domain + "'");
console.error("[Error] (see https://git.coolaj86.com/coolaj86/greenlock.js/issues/11)");
if ('E_REJECT_SNI' !== _err.code) {
console.error("[Error] This is the rejection message:");
console.error(_err.message);
}
console.error("");
}
cb(_err);
return;
}
function mb2(_err, results) {
if (_err) { eb2(_err); return; }
cb2(results);
}
try {
if (1 === gl.approveDomains.length) {
gl.approveDomains(opts).then(cb2).catch(eb2);
} else if (2 === gl.approveDomains.length) {
gl.approveDomains(opts, mb2);
} else {
gl.approveDomains(opts, certs, mb2);
}
} catch(e) {
console.error("[ERROR] Something went wrong in approveDomains:");
console.error(e);
console.error("BUT WAIT! Good news: It's probably your fault, so you can probably fix it.");
}
};
}
gl.sni = gl.sni || require('le-sni-auto');
if (gl.sni.create) {
gl.sni = gl.sni.create(gl);
}
gl.tlsOptions.SNICallback = function (_domain, cb) {
// format and (lightly) sanitize sni so that users can be naive
// and not have to worry about SQL injection or fs discovery
var domain = (_domain||'').toLowerCase();
// hostname labels allow a-z, 0-9, -, and are separated by dots
// _ is sometimes allowed
// REGEX // https://www.codeproject.com/Questions/1063023/alphanumeric-validation-javascript-without-regex
if (!gl.__sni_allow_dangerous_names && (!/^[a-z0-9_\.\-]+$/i.test(domain) || -1 !== domain.indexOf('..'))) {
log(gl.debug, "invalid sni '" + domain + "'");
cb(new Error("invalid SNI"));
return;
}
try {
gl.sni.sniCallback(gl.__sni_preserve_case && _domain || domain, cb);
} catch(e) {
console.error("[ERROR] Something went wrong in the SNICallback:");
console.error(e);
cb(e);
}
};
}
// We want to move to using tlsOptions instead of httpsOptions, but we also need to make
// sure anything that uses this object will still work if looking for httpsOptions.
gl.httpsOptions = gl.tlsOptions;
if (gl.core.create) {
gl.core = gl.core.create(gl);
}
gl.renew = function (args, certs) {
return gl.core.certificates.renewAsync(args, certs);
};
gl.register = function (args) {
return gl.core.certificates.getAsync(args);
};
gl.check = function (args) {
// TODO must return email, domains, tos, pems
return gl.core.certificates.checkAsync(args);
};
gl.middleware = gl.middleware || require('./lib/middleware');
if (gl.middleware.create) {
gl.middleware = gl.middleware.create(gl);
}
//var SERVERNAME_RE = /^[a-z0-9\.\-_]+$/;
var SERVERNAME_G = /[^a-z0-9\.\-_]/;
gl.middleware.sanitizeHost = function (app) {
return function (req, res, next) {
function realNext() {
if ('function' === typeof app) {
app(req, res);
} else if ('function' === typeof next) {
next();
} else {
res.statusCode = 500;
res.end("Error: no middleware assigned");
}
}
// Get the host:port combo, if it exists
var host = (req.headers.host||'').split(':');
// if not, move along
if (!host[0]) { realNext(); return; }
// if so, remove non-allowed characters
var safehost = host[0].toLowerCase().replace(SERVERNAME_G, '');
// if there were unallowed characters, complain
if (!gl.__sni_allow_dangerous_names && safehost.length !== host[0].length) {
res.statusCode = 400;
res.end("Malformed HTTP Header: 'Host: " + host[0] + "'");
return;
}
// make lowercase
if (!gl.__sni_preserve_case) {
host[0] = safehost;
req.headers.host = host.join(':');
}
// Note: This sanitize function is also called on plain sockets, which don't need Domain Fronting checks
if (req.socket.encrypted && !gl.__sni_allow_domain_fronting) {
if (req.socket && 'string' === typeof req.socket.servername) {
// Workaround for https://github.com/nodejs/node/issues/22389
if (!gl._checkServername(safehost, req.socket.servername.toLowerCase())) {
res.statusCode = 400;
res.setHeader('Content-Type', 'text/html; charset=utf-8');
res.end(
"Domain Fronting Error
"
+ "This connection was secured using TLS/SSL for '" + req.socket.servername.toLowerCase() + "'
"
+ "The HTTP request specified 'Host: " + safehost + "', which is (obviously) different.
"
+ "Because this looks like a domain fronting attack, the connection has been terminated.
"
);
return;
}
} else if (safehost && !gl.middleware.sanitizeHost._skip_fronting_check) {
// TODO how to handle wrapped sockets, as with telebit?
console.warn("\n\n\n[greenlock] WARN: no string for req.socket.servername,"
+ " skipping fronting check for '" + safehost + "'\n\n\n");
gl.middleware.sanitizeHost._skip_fronting_check = true;
}
}
// carry on
realNext();
};
};
gl.middleware.sanitizeHost._skip_fronting_check = false;
return gl;
};