From 4767d14517f1231e2d7e85dbec60fa0d2b876a11 Mon Sep 17 00:00:00 2001
From: AJ ONeal <awesome@coolaj86.com>
Date: Wed, 16 Dec 2015 02:51:38 +0000
Subject: [PATCH] updates

---
 README.md            |  1 +
 lib/get-acme-urls.js | 56 ++++++++++++++++++++++++++++++++++++++++++++
 node.js              |  4 +++-
 3 files changed, 60 insertions(+), 1 deletion(-)
 create mode 100644 lib/get-acme-urls.js

diff --git a/README.md b/README.md
index 83ba1ae..e464755 100644
--- a/README.md
+++ b/README.md
@@ -150,6 +150,7 @@ LeCore.acmeChallengePrefix                // /.well-known/acme-challenge/
 LeCore.configDir                          // /etc/letsencrypt/
 LeCore.logsDir                            // /var/log/letsencrypt/
 LeCore.workDir                            // /var/lib/letsencrypt/
+LeCore.knownEndpoints                     // new-authz, new-cert, new-reg, revoke-cert
 
 
 // HTTP Client Helpers
diff --git a/lib/get-acme-urls.js b/lib/get-acme-urls.js
new file mode 100644
index 0000000..87d14c5
--- /dev/null
+++ b/lib/get-acme-urls.js
@@ -0,0 +1,56 @@
+/*!
+ * letiny-core
+ * Copyright(c) 2015 AJ ONeal <aj@daplie.com> https://daplie.com
+ * Apache-2.0 OR MIT (and hence also MPL 2.0)
+*/
+'use strict';
+
+module.exports.create = function (deps) {
+  var request = deps.request;
+  var knownUrls = deps.LeCore.knownEndpoints;
+
+  function getAcmeUrls(acmeDiscoveryUrl, cb) {
+
+    // TODO check response header on request for cache time
+    return request({
+      url: acmeDiscoveryUrl
+    }, function (err, resp) {
+      if (err) {
+        cb(err);
+        return;
+      }
+
+      var data = resp.body;
+
+      if ('string' === typeof data) {
+        try {
+          data = JSON.parse(data);
+        } catch(e) {
+          cb(e);
+          return;
+        }
+      }
+
+      if (4 !== Object.keys(data).length) {
+        console.warn("This Let's Encrypt / ACME server has been updated with urls that this client doesn't understand");
+        console.warn(data);
+      }
+
+      if (!knownUrls.every(function (url) {
+        return data[url];
+      })) {
+        console.warn("This Let's Encrypt / ACME server is missing urls that this client may need.");
+        console.warn(data);
+      }
+
+      return {
+        newAuthz: data['new-authz']
+      , newCert: data['new-cert']
+      , newReg: data['new-reg']
+      , revokeCert: data['revoke-cert']
+      };
+    });
+  }
+
+  return getAcmeUrls;
+};
diff --git a/node.js b/node.js
index fb81c94..69d3b8b 100644
--- a/node.js
+++ b/node.js
@@ -1,5 +1,5 @@
 /*!
- * letsencrypt-core
+ * letiny-core
  * Copyright(c) 2015 AJ ONeal <aj@daplie.com> https://daplie.com
  * Apache-2.0 OR MIT (and hence also MPL 2.0)
 */
@@ -9,6 +9,7 @@ function create(deps) {
   var LeCore = {};
 
   LeCore.leCrypto = deps.leCrypto;
+  LeCore.getAcmeUrls = require('./lib/get-acme-urls').create(deps);
   deps.Acme = LeCore.Acme = require('./lib/acme-client').create(deps);
   LeCore.registerNewAccount = require('./lib/register-new-account').create(deps);
   LeCore.getCertificate = require('./lib/get-certificate').create(deps);
@@ -22,6 +23,7 @@ function create(deps) {
   LeCore.configDir                          = "/etc/letsencrypt/";
   LeCore.logsDir                            = "/var/log/letsencrypt/";
   LeCore.workDir                            = "/var/lib/letsencrypt/";
+  LeCore.knownEndpoints                     = ['new-authz', 'new-cert', 'new-reg', 'revoke-cert'];
 
   return LeCore;
 }