Merged pull request #50.

Gemfile

@@ -17,6 +17,7 @@ gem 'kaminari', github: 'jomo/kaminari', branch: 'patch-2' # pagination
 gem 'jquery-textcomplete-rails' # @mentions
 gem 'actionpack-action_caching', github: 'antulik/actionpack-action_caching', ref: '8c6e52c69315d67437f480da5dce4b7c8737fb32'
 gem 'mail-gpg', github: 'jomo/mail-gpg', ref: 'a666b48ee866dfa3eaa700f9c5edf4d195d0f8c9'
+gem 'totp'
 
 # Gems used only for assets and not required
 # in production environments by default.

Gemfile.lock

@@ -99,6 +99,7 @@ GEM
     airbrussh (1.3.0)
       sshkit (>= 1.6.1, != 1.7.0)
     arel (6.0.4)
+    base32 (0.3.2)
     bcrypt (3.1.11)
     better_errors (2.4.0)
       coderay (>= 1.0.0)
@@ -237,6 +238,8 @@ GEM
     thor (0.20.0)
     thread_safe (0.3.6)
     tilt (2.0.8)
+    totp (1.0.0)
+      base32
     tzinfo (1.2.5)
       thread_safe (~> 0.1)
     uglifier (4.1.8)
@@ -277,10 +280,11 @@ DEPENDENCIES
   sass-rails
   sqlite3
   strip_attributes
+  totp
   tzinfo-data
   uglifier
   unicorn
   webrick
 
 BUNDLED WITH
-   1.16.1
+   1.16.2

app/controllers/application_controller.rb

@@ -1,6 +1,6 @@
 class ApplicationController < ActionController::Base
   protect_from_forgery
-  before_filter :update_ip, :update_seen, :check_banned
+  before_filter :update_ip, :update_seen, :check_banned, :check_2fa
   # TODO: use SSL
 
 
@@ -41,6 +41,14 @@ class ApplicationController < ActionController::Base
     end
   end
 
+  def check_2fa
+    # Over complicated way of asking if the user is logged in as a mod without TOTP enabled while they are not on their login settings screen, logging out, or updating their login settings.
+    if current_user && current_user.mod? && !current_user.totp_enabled? && !(controller_name == "users" && action_name == "edit_login") && !(controller_name == "sessions" && action_name == "destroy") && !(controller_name == "users" && action_name == "update_login")
+      flash[:alert] = "Due to your staff rank, you are required to enable 2FA."
+      redirect_to :controller => "users", :action => "edit_login", :id => current_user.id
+    end
+  end
+
 
   #roles
   def disabled?

app/controllers/sessions_controller.rb

@@ -21,6 +21,10 @@ class SessionsController < ApplicationController
           flash[:alert] = "Your account has been disabled!"
         elsif user.banned?
           flash[:alert] = "You are banned!"
+        elsif user.totp_enabled && !TOTP.valid?(user.totp_secret, params[:totp_code].to_i)
+          flash[:alert] = "You're doing it wrong!"
+          render action: 'new'
+          return
         else
           session[:user_id] = user.id
           flash[:notice] = "Logged in!"
@@ -110,4 +114,4 @@ class SessionsController < ApplicationController
       redirect_to login_path
     end
   end
-end
+end

app/controllers/users_controller.rb

@@ -241,6 +241,11 @@ class UsersController < ApplicationController
     unless @user.is?(current_user) || admin? && current_user.role > @user.role || superadmin?
       flash[:alert] = "You are not allowed to edit this user's login details!"
       redirect_to @user
+      return
+    end
+
+    if !@user.totp_enabled
+      @user.update(totp_secret: TOTP.secret)
     end
   end
 
@@ -263,6 +268,18 @@ class UsersController < ApplicationController
       @user.email_token = SecureRandom.hex(16) if mail_changed
       @user.confirmed   = !mail_changed
 
+      if params[:user][:totp_enabled] == "1" && !@user.totp_enabled
+        if TOTP.valid?(@user.totp_secret, params[:totp_code].to_i)
+          @user.totp_enabled = true
+        else
+          flash[:alert] = "Wrong TOTP code!"
+          render action: "edit_login"
+          return
+        end
+      elsif params[:user][:totp_enabled] == "0" && @user.totp_enabled
+        @user.totp_enabled = false
+      end
+
       # checking here for password so we can send back changes to the view
       if authenticated
         if @user.save
@@ -370,7 +387,7 @@ class UsersController < ApplicationController
   end
 
   def user_params(add = [])
-    a = [:ign, :email, :password, :password_confirmation, :mail_own_thread_reply, :mail_other_thread_reply, :mail_own_blogpost_comment, :mail_other_blogpost_comment, :mail_mention, :public_key] + add
+    a = [:ign, :email, :password, :password_confirmation, :mail_own_thread_reply, :mail_other_thread_reply, :mail_own_blogpost_comment, :mail_other_blogpost_comment, :mail_mention, :public_key, :totp_code] + add
     params.require(:user).permit(a)
   end
 end

app/views/sessions/new.html.erb

@@ -16,6 +16,14 @@
       <td></td>
       <td><%= link_to "Lost your password?", lost_password_users_path %></td>
     </tr>
+    <tr>
+      <td><%= label_tag :totp_code %></td>
+      <td><%= text_field_tag :totp_code, nil, placeholder: "123456", required: false %></td>
+    </tr>
+    <tr>
+      <td></td>
+      <td>Leave this field blank if you do not have 2FA enabled.</td>
+    </tr>
   </table>
   <p><%= submit_tag "Log in", class: "btn blue" %></p>
 <% end %>

app/views/users/edit.html.erb

@@ -71,7 +71,7 @@
 
 <p><%= f.submit "Save Profile", class: "btn variable-size left", disabled: (!@user.confirmed? && @user.is?(current_user)) %></p>
 <p>
-  <%= link_to "Edit Login Details", edit_login_user_path(@user), class: "btn variable-size right" %>
+  <%= link_to "Login Settings", edit_login_user_path(@user), class: "btn variable-size right" %>
   <%= link_to "Notification Settings", edit_notifications_user_path(@user), class: "btn variable-size right" %>
   <%= link_to "Website Settings", edit_website_settings_user_path(@user), class: "btn variable-size right" %>
 </p>

app/views/users/edit_login.html.erb

@@ -1,7 +1,7 @@
 <% title "Edit Login Credentials: #{@user.name}" %>
 
-<%= link_to @user.name, @user %> → Edit Login credentials
+<%= link_to @user.name, @user %> → Edit Login settings
-<h1>Edit Login Credentials</h1>
+<h1>Edit Login Settings</h1>
 
 
 <%= form_for @user, url: update_login_user_path(@user), method: :put do |f| %>
@@ -25,12 +25,49 @@
           <%= f.password_field :password_confirmation %>
         </td>
       </tr>
+    </tbody>
+  </table>
+  <hr>
+  <table>
+    <tbody>
+      <tr>
+        <td>2FA Enabled</td>
+        <td>
+          <%= f.check_box :totp_enabled %>
+        </td>
+      </tr>
+      <tr>
+        <td>TOTP Secret</td>
+        <td>
+          <% if !@user.totp_enabled? %>
+          <%= f.text_field :totp_secret, :readonly => true %>
+          <% else %>
+          <i>2FA is currently enabled. Disable 2FA to generate a new secret.</i>
+          <% end %>
+        </td>
+      </tr>
+    </tbody>
+  </table>
+  <hr>
+  <table>
+    <tbody>
       <tr>
         <td>Current password</td>
         <td>
           <%= password_field_tag :current_password, nil, disabled: !@user.is?(current_user) %>
         </td>
       </tr>
+      <% if !@user.totp_enabled? %>
+      <tr>
+        <td>TOTP Code</td>
+        <td>
+          <%= text_field_tag :totp_code, nil, disabled: !@user.is?(current_user) %>
+        </td>
+      </tr>
+      <tr>
+        <td></td>
+        <td><i>Leave this field blank if you are not enabling 2FA.</i></td>
+      <% end %>
     </tbody>
   </table>
   <p><%= f.submit "Save Changes", class: "btn blue left" %></p>

db/migrate/20180606223258_add_totp_to_users.rb

@@ -0,0 +1,6 @@
+class AddTotpToUsers < ActiveRecord::Migration
+  def change
+    add_column :users, :totp_secret, :string
+    add_column :users, :totp_enabled, :boolean, default: false
+  end
+end

db/schema.rb

@@ -11,7 +11,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 20171013001146) do
+ActiveRecord::Schema.define(version: 20180606223258) do
 
   create_table "badges", force: :cascade do |t|
     t.string  "name",   limit: 191
@@ -154,6 +154,8 @@ ActiveRecord::Schema.define(version: 20171013001146) do
     t.boolean  "header_scroll",                             default: false
     t.boolean  "dark",                                      default: false
     t.text     "public_key",                  limit: 65535
+    t.string   "totp_secret",                   limit: 255
+    t.boolean  "totp_enabled",                              default: false
   end
 
   add_index "users", ["email"], name: "index_users_on_email", unique: true, using: :btree