Add support of allow anonymous config option with correspond modifications

Author: jackycute

README.md

@@ -118,6 +118,7 @@ Environment variables (will overwrite other server configs)
 | HMD_PROTOCOL_USESSL | `true` or `false` | set to use ssl protocol for resources path (only applied when domain is set) |
 | HMD_URL_ADDPORT | `true` or `false` | set to add port on callback url (port 80 or 443 won't applied) (only applied when domain is set) |
 | HMD_USECDN | `true` or `false` | set to use CDN resources or not (default is `true`) |
+| HMD_ALLOW_ANONMYOUS | `true` or `false` | set to allow anonmyous usage (default is `true`) |
 | HMD_FACEBOOK_CLIENTID | no example | Facebook API client id |
 | HMD_FACEBOOK_CLIENTSECRET | no example | Facebook API client secret |
 | HMD_TWITTER_CONSUMERKEY | no example | Twitter API consumer key |
@@ -153,6 +154,7 @@ Server settings `config.json`
 | protocolusessl | `true` or `false` | set to use ssl protocol for resources path (only applied when domain is set) |
 | urladdport | `true` or `false` | set to add port on callback url (port 80 or 443 won't applied) (only applied when domain is set) |
 | usecdn | `true` or `false` | set to use CDN resources or not (default is `true`) |
+| allowanonmyous | `true` or `false` | set to allow anonmyous usage (default is `true`) |
 | db | `{ "dialect": "sqlite", "storage": "./db.hackmd.sqlite" }` | set the db configs, [see more here](http://sequelize.readthedocs.org/en/latest/api/sequelize/) |
 | sslkeypath | `./cert/client.key` | ssl key path (only need when you set usessl) |
 | sslcertpath | `./cert/hackmd_io.crt` | ssl cert path (only need when you set usessl) |

lib/config.js

@@ -19,6 +19,8 @@ var urladdport = process.env.HMD_URL_ADDPORT ? (process.env.HMD_URL_ADDPORT ===
 
 var usecdn = process.env.HMD_USECDN ? (process.env.HMD_USECDN === 'true') : ((typeof config.usecdn === 'boolean') ? config.usecdn : true);
 
+var allowanonmyous = process.env.HMD_ALLOW_ANONMYOUS ?  (process.env.HMD_ALLOW_ANONMYOUS === 'true') : ((typeof config.allowanonmyous === 'boolean') ? config.allowanonmyous : true);
+
 // db
 var db = config.db || {
     dialect: 'sqlite',
@@ -125,6 +127,7 @@ module.exports = {
     usessl: usessl,
     serverurl: getserverurl(),
     usecdn: usecdn,
+    allowanonmyous: allowanonmyous,
     db: db,
     sslkeypath: path.join(cwd, sslkeypath),
     sslcertpath: path.join(cwd, sslcertpath),

lib/realtime.js

@@ -763,6 +763,7 @@ function connection(socket) {
             var note = notes[noteId];
             //Only owner can change permission
             if (note.owner && note.owner == socket.request.user.id) {
+                if (permission == 'freely' && !config.allowanonmyous) return;
                 note.permission = permission;
                 models.Note.update({
                     permission: permission

lib/response.js

@@ -60,6 +60,7 @@ function showIndex(req, res, next) {
     res.render(config.indexpath, {
         url: config.serverurl,
         useCDN: config.usecdn,
+        allowAnonmyous: config.allowanonmyous,
         facebook: config.facebook,
         twitter: config.twitter,
         github: config.github,
@@ -92,6 +93,7 @@ function responseHackMD(res, note) {
         url: config.serverurl,
         title: title,
         useCDN: config.usecdn,
+        allowAnonmyous: config.allowanonmyous,
         facebook: config.facebook,
         twitter: config.twitter,
         github: config.github,
@@ -106,6 +108,8 @@ function newNote(req, res, next) {
     var owner = null;
     if (req.isAuthenticated()) {
         owner = req.user.id;
+    } else if (!config.allowanonmyous) {
+        return response.errorForbidden(res);
     }
     models.Note.create({
         ownerId: owner

public/views/body.ejs

@@ -15,7 +15,7 @@
                     <a id="permissionLabel" class="ui-permission-label text-uppercase" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false">
                     </a>
                     <ul class="dropdown-menu" aria-labelledby="permissionLabel">
-                        <li class="ui-permission-freely"><a><i class="fa fa-leaf fa-fw"></i> Freely - Anyone can edit</a></li>
+                        <li class="ui-permission-freely"<% if(!allowAnonmyous) { %> style="display: none;"<% } %>><a><i class="fa fa-leaf fa-fw"></i> Freely - Anyone can edit</a></li>
                         <li class="ui-permission-editable"><a><i class="fa fa-shield fa-fw"></i> Editable - Signed people can edit</a></li>
                         <li class="ui-permission-locked"><a><i class="fa fa-lock fa-fw"></i> Locked - Only owner can edit</a></li>
                         <li class="ui-permission-private"><a><i class="fa fa-hand-stop-o fa-fw"></i> Private - Only owner can view &amp; edit</a></li>

public/views/index.ejs

@@ -62,13 +62,17 @@
                             <br>
                             <a type="button" class="btn btn-lg btn-success ui-signin" data-toggle="modal" data-target=".signin-modal" style="min-width: 170px;"><%= __('Sign In') %></a>
                         </span>
+                        <% }%>
+                        <% if((facebook || twitter || github || gitlab || dropbox || google || email) && allowAnonmyous) { %>
                         <span class="ui-or"><%= __('or') %></span>
                         <% }%>
+                        <% if(allowAnonmyous) { %>
                         <span class="ui-signin">
                             <a href="<%- url %>/new" class="btn btn-lg btn-default" style="min-width: 170px;"><%= __('New guest note') %></a>
                             <br>
                             <br>
                         </span>
+                        <% }%>
                         <div class="lead row" style="width: 90%; margin: 0 auto;">
                             <div class="col-md-4 inner">
                                 <a href="<%- url %>/features#share-notes">