Some changes, including DNS support (#57)

* remove CDN

* Add a link to "members" in the network detail page

* Show object values as JSON

* remove TLS options

* Minor style improvements

* Show object values as JSON (member_detail)

* Add missing 'const'

* Navbar height fix

* Merge jQuery ready functions

* Change brand

* Merge network pages (name, members, detail) into single page and...

* Show ZT version on controller index page
* Show count of members
* Use <code> tag to display JSON data
* Fix error in some "error" pages caused by missing "navigate" when
  rendering nav items, use pug mixin to render nav items.
* Adjust column widths of network list

* Refactor: move duplicated nav code to `head_layout`

* Remove some debug logging code

* Get network members detail parallelly

* Add missing frontend script for members

* Revert "Change brand"

* Remove "members" and "name" pages which are merged into "detail"

* Add DNS support

* Trivial changes (table width etc.)

* Don't try to read TLS cert files when not using HTTPS

* Validate DNS IP

* Downgrade jquery to 3.4.1 to fix nav bar collapse

* Revert "Navbar height fix"

This reverts commit 8edaa9aa81, which
break the nav item height on mobile.

* Add missing margin for some buttons

* Display current DNS configuration above inputs

* Change network rename UI/UX

* Includes 'jquery.min.js' in pkg

* Improve JSON value rendering

* Get peer status of network members

* Display members with peer status

* Show controller itself as "CONTROLLER"

* Display peer address

* Improve login redirection

* pr57: Doc updates; version bump

* pr57: Year update

Co-authored-by: Key Networks <34238649+key-networks@users.noreply.github.com>

src/controllers/zt.js

@@ -1,6 +1,6 @@
 /*
   ztncui - ZeroTier network controller UI
-  Copyright (C) 2017-2018  Key Networks (https://key-networks.com)
+  Copyright (C) 2017-2021  Key Networks (https://key-networks.com)
   Licensed under GPLv3 - see LICENSE for details.
 */
 
@@ -8,9 +8,9 @@ const got = require('got');
 const ipaddr = require('ip-address');
 const token = require('./token');
 
-ZT_ADDR = process.env.ZT_ADDR || 'localhost:9993';
+const ZT_ADDR = process.env.ZT_ADDR || 'localhost:9993';
 
-init_options = async function() {
+const init_options = async function() {
   let tok = null;
 
   try {
@@ -29,16 +29,21 @@ init_options = async function() {
   return options;
 }
 
-get_zt_address = async function() {
+const get_zt_status = async function() {
   const options = await init_options();
 
   try {
     const response = await got(ZT_ADDR + '/status', options);
-    return response.body.address;
+    return response.body;
   } catch(err) {
     throw(err);
   }
 }
+exports.get_zt_status = get_zt_status;
+
+const get_zt_address = async function() {
+  return (await get_zt_status()).address;
+}
 exports.get_zt_address = get_zt_address;
 
 exports.network_list = async function() {
@@ -68,7 +73,7 @@ exports.network_list = async function() {
   return networks;
 }
 
-network_detail = async function(nwid) {
+const network_detail = async function(nwid) {
   const options = await init_options();
 
   try {
@@ -241,7 +246,7 @@ exports.members = async function(nwid) {
   }
 }
 
-member_detail = async function(nwid, id) {
+const member_detail = async function(nwid, id) {
   const options = await init_options();
 
   try {
@@ -303,3 +308,22 @@ exports.network_easy_setup = async function(nwid,
     throw(err);
   }
 }
+
+exports.peers = async function() {
+  const options = await init_options();
+  const response = await got(ZT_ADDR + '/peer', options);
+  return response.body;
+}
+
+exports.peer = async function(id) {
+  const options = await init_options();
+  try {
+    const response = await got(ZT_ADDR + '/peer/' + id, options);
+    return response.body;
+  } catch (error) {
+    if (error instanceof got.HTTPError && error.statusCode == 404) {
+      return null;
+    }
+    throw error;
+  }
+}