120 lines
3.2 KiB
JavaScript
120 lines
3.2 KiB
JavaScript
'use strict';
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var fs = require('fs');
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var path = require('path');
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var myDefaults = {
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//webrootPath: [ '~', 'letsencrypt', 'var', 'lib' ].join(path.sep)
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webrootPath: path.join(require('os').tmpdir(), 'acme-challenge')
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, debug: false
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};
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var Challenge = module.exports;
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Challenge.create = function (options) {
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var results = {};
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Object.keys(Challenge).forEach(function (key) {
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results[key] = Challenge[key];
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});
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results.create = undefined;
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Object.keys(myDefaults).forEach(function (key) {
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if ('undefined' === typeof options[key]) {
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options[key] = myDefaults[key];
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}
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});
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results._options = options;
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results.getOptions = function () {
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return results._options;
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};
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return results;
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};
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//
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// NOTE: the "args" here in `set()` are NOT accessible to `get()` and `remove()`
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// They are provided so that you can store them in an implementation-specific way
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// if you need access to them.
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//
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Challenge.set = function (args, domain, challengePath, keyAuthorization, done) {
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var mkdirp = require('mkdirp');
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keyAuthorization = String(keyAuthorization);
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mkdirp(args.webrootPath, function (err) {
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if (err) {
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done(err);
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return;
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}
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fs.writeFile(path.join(args.webrootPath, challengePath), keyAuthorization, 'utf8', function (err) {
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done(err);
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});
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});
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};
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//
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// NOTE: the "defaults" here are still merged and templated, just like "args" would be,
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// but if you specifically need "args" you must retrieve them from some storage mechanism
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// based on domain and key
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//
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Challenge.get = function (defaults, domain, key, done) {
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fs.readFile(path.join(defaults.webrootPath, key), 'utf8', done);
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};
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Challenge.remove = function (defaults, domain, key, done) {
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fs.unlink(path.join(defaults.webrootPath, key), done);
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};
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Challenge.loopback = function (defaults, domain, key, done) {
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var hostname = domain + (defaults.test ? ':' + defaults.test : '');
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var urlstr = 'http://' + hostname + '/.well-known/acme-challenge/' + key;
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require('http').get(urlstr, function (res) {
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if (200 !== res.statusCode) {
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done(new Error("local loopback failed with statusCode " + res.statusCode));
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return;
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}
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var chunks = [];
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res.on('data', function (chunk) {
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chunks.push(chunk);
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});
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res.on('end', function () {
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var str = Buffer.concat(chunks).toString('utf8').trim();
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done(null, str);
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});
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}).on('error', function (err) {
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done(err);
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});
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};
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Challenge.test = function (args, domain, challenge, keyAuthorization, done) {
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var me = this;
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var key = keyAuthorization || challenge;
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me.set(args, domain, challenge, key, function (err) {
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if (err) { done(err); return; }
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// test is actually the port to be used
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myDefaults.test = args.test;
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myDefaults.webrootPath = args.webrootPath;
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me.loopback(args, domain, challenge, function (err, _key) {
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if (err) { done(err); return; }
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if (key !== _key) {
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err = new Error("keyAuthorization [original] '" + key + "'"
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+ " did not match [result] '" + _key + "'");
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return;
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}
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me.remove(myDefaults, domain, challenge, function (_err) {
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if (_err) { done(_err); return; }
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done(err);
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});
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});
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});
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};
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