greenlock-express.js/index.js

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'use strict';
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var PromiseA;
try {
PromiseA = require('bluebird');
} catch(e) {
PromiseA = global.Promise;
}
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// opts.approveDomains(options, certs, cb)
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module.exports.create = function (opts) {
// accept all defaults for greenlock.challenges, greenlock.store, greenlock.middleware
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if (!opts._communityPackage) {
opts._communityPackage = 'greenlock-express.js';
}
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function explainError(e) {
console.error('Error:' + e.message);
if ('EACCES' === e.errno) {
console.error("You don't have prmission to access '" + e.address + ":" + e.port + "'.");
console.error("You probably need to use \"sudo\" or \"sudo setcap 'cap_net_bind_service=+ep' $(which node)\"");
return;
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}
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if ('EADDRINUSE' === e.errno) {
console.error("'" + e.address + ":" + e.port + "' is already being used by some other program.");
console.error("You probably need to stop that program or restart your computer.");
return;
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}
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console.error(e.code + ": '" + e.address + ":" + e.port + "'");
}
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function _listen(plainPort, plain) {
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if (!plainPort) { plainPort = 80; }
var parts = String(plainPort).split(':');
var p = parts.pop();
var addr = parts.join(':').replace(/^\[/, '').replace(/\]$/, '');
var args = [];
var httpType;
var server;
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var validHttpPort = (parseInt(p, 10) >= 0);
function tryPlain() {
server = require('http').createServer(
greenlock.middleware.sanitizeHost(greenlock.middleware(require('redirect-https')()))
);
httpType = 'http';
}
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function trySecure() {
var https;
try {
https = require('spdy');
greenlock.tlsOptions.spdy = { protocols: [ 'h2', 'http/1.1' ], plain: false };
httpType = 'http2 (spdy/h2)';
} catch(e) {
https = require('https');
httpType = 'https';
}
server = https.createServer(
greenlock.tlsOptions
, greenlock.middleware.sanitizeHost(function (req, res) {
try {
greenlock.app(req, res);
} catch(e) {
console.error("[error] [greenlock.app] Your HTTP handler had an uncaught error:");
console.error(e);
try {
res.statusCode = 500;
res.end("Internal Server Error: [Greenlock] HTTP exception logged for user-provided handler.");
} catch(e) {
// ignore
// (headers may have already been sent, etc)
}
}
})
);
server.type = httpType;
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}
if (addr) { args[1] = addr; }
if (!validHttpPort && !/(\/)|(\\\\)/.test(p)) {
console.warn("'" + p + "' doesn't seem to be a valid port number, socket path, or pipe");
}
if (plain) { tryPlain(); } else { trySecure(); }
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var promise = new PromiseA(function (resolve) {
args[0] = p;
args.push(function () { resolve(server); });
server.listen.apply(server, args).on('error', function (e) {
if (server.listenerCount('error') < 2) {
console.warn("Did not successfully create http server and bind to port '" + p + "':");
explainError(e);
process.exit(41);
}
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});
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});
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promise.server = server;
return promise;
}
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// NOTE: 'greenlock' is just 'opts' renamed
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var greenlock = require('greenlock').create(opts);
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if (!opts.app) {
opts.app = function (req, res) {
res.end("Hello, World!\nWith Love,\nGreenlock for Express.js");
};
}
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opts.listen = function (plainPort, port, fnPlain, fn) {
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var promises = [];
var server;
var plainServer;
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// If there is only one handler for the `listening` (i.e. TCP bound) event
// then we want to use it as HTTPS (backwards compat)
if (!fn) {
fn = fnPlain;
fnPlain = null;
}
promises.push(_listen(plainPort, true));
promises.push(_listen(port, false));
server = promises[1].server;
plainServer = promises[0].server;
PromiseA.all(promises).then(function () {
// Report plain http status
if ('function' === typeof fnPlain) {
fnPlain.apply(plainServer);
} else if (!fn && !plainServer.listenerCount('listening') && !server.listenerCount('listening')) {
console.info('[:' + (plainServer.address().port || plainServer.address())
+ "] Handling ACME challenges and redirecting to " + server.type);
}
// Report h2/https status
if ('function' === typeof fn) {
fn.apply(server);
} else if (!server.listenerCount('listening')) {
console.info('[:' + (server.address().port || server.address()) + "] Serving " + server.type);
}
});
server.unencrypted = plainServer;
return server;
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};
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opts.middleware.acme = function (opts) {
return greenlock.middleware.sanitizeHost(greenlock.middleware(require('redirect-https')(opts)));
};
opts.middleware.secure = function (app) {
return greenlock.middleware.sanitizeHost(app);
};
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return greenlock;
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};