Fix for email verification issue (GRN-36) (#300)

* <incorrect smtp settings no longer crashes the application>

* <Added rspec tests>

* <>

* Delete env

* Update development.rb

app/controllers/users_controller.rb

@@ -29,8 +29,13 @@ class UsersController < ApplicationController
     @user.provider = "greenlight"
 
     if Rails.configuration.enable_email_verification && @user.save
-      UserMailer.verify_email(@user, verification_link(@user)).deliver
-      login(@user)
+      begin
+        UserMailer.verify_email(@user, verification_link(@user)).deliver
+        login(@user)
+      rescue => e
+        logger.error "Error in email delivery: #{e}"
+        mailer_delivery_fail
+      end
     elsif @user.save
       login(@user)
     else
@@ -134,8 +139,13 @@ class UsersController < ApplicationController
     elsif current_user.email_verified
       login(current_user)
     elsif params[:email_verified] == "false"
-      UserMailer.verify_email(current_user, verification_link(current_user)).deliver
-      render 'verify'
+      begin
+        UserMailer.verify_email(current_user, verification_link(current_user)).deliver
+        render 'verify'
+      rescue => e
+        logger.error "Error in email delivery: #{e}"
+        mailer_delivery_fail
+      end
     else
       render 'verify'
     end
@@ -143,6 +153,10 @@ class UsersController < ApplicationController
 
   private
 
+  def mailer_delivery_fail
+    redirect_to root_path, notice: I18n.t(params[:message], default: I18n.t("delivery_error"))
+  end
+
   def verification_link(user)
     request.base_url + confirm_path(user.uid)
   end

config/environments/development.rb

@@ -41,8 +41,8 @@ Rails.application.configure do
     enable_starttls_auto: ENV['SMTP_STARTTLS_AUTO'],
   }
 
-  # Don't care if the mailer can't send.
-  config.action_mailer.raise_delivery_errors = false
+  # Do care if the mailer can't send.
+  config.action_mailer.raise_delivery_errors = true
 
   config.action_mailer.perform_caching = false
 

config/environments/production.rb

@@ -54,6 +54,22 @@ Rails.application.configure do
   # Use a different cache store in production.
   # config.cache_store = :mem_cache_store
 
+  # Tell Action Mailer to use smtp server
+  config.action_mailer.delivery_method = :smtp
+
+  ActionMailer::Base.smtp_settings = {
+    address: ENV['SMTP_SERVER'],
+    port: ENV["SMTP_PORT"],
+    domain: ENV['SMTP_DOMAIN'],
+    user_name: ENV['SMTP_USERNAME'],
+    password: ENV['SMTP_PASSWORD'],
+    authentication: ENV['SMTP_AUTH'],
+    enable_starttls_auto: ENV['SMTP_STARTTLS_AUTO'],
+  }
+
+  # Don't care if the mailer can't send.
+  config.action_mailer.raise_delivery_errors = true
+
   # Use a real queuing backend for Active Job (and separate queues per environment)
   # config.active_job.queue_adapter     = :resque
   # config.active_job.queue_name_prefix = "greenlight-2_0_#{Rails.env}"

config/locales/en.yml

@@ -25,6 +25,7 @@ en:
   cancel: Cancel
   copy: Copy
   delete: Delete
+  delivery_error: An error occured during email delivery. Please contact an administrator!
   docs: Documentation
   email: Email
   enter_your_name: Enter your name!

sample.env

@@ -73,7 +73,7 @@ ALLOW_GREENLIGHT_ACCOUNTS=true
 # Set this to true if you want GreenLight to send verification emails upon
 # the creation of a new account
 #
-# SMTP variables can be taken from the list in the following table:
+# SMTP variables can be configured by following the template:
 #
 #   ALLOW_MAIL_NOTIFICATIONS=true
 #   SMTP_SERVER=smtp.gmail.com

spec/controllers/users_controller_spec.rb

@@ -101,6 +101,19 @@ describe UsersController, type: :controller do
       end
     end
 
+    context "allow email verification" do
+      before { allow(Rails.configuration).to receive(:enable_email_verification).and_return(true) }
+
+      it "should raise if there there is a delivery failure" do
+        params = random_valid_user_params
+
+        expect do
+          post :create, params: params
+          raise :anyerror
+        end.to raise_error { :anyerror }
+      end
+    end
+
     it "redirects to main room if already authenticated" do
       user = create(:user)
       @request.session[:user_id] = user.id
@@ -155,6 +168,19 @@ describe UsersController, type: :controller do
       expect { post :resend, params: { email_verified: false } }.to change { ActionMailer::Base.deliveries.count }.by(1)
       expect(response).to render_template(:verify)
     end
+
+    it "should raise if there there is a delivery failure" do
+      params = random_valid_user_params
+      post :create, params: params
+
+      u = User.find_by(name: params[:user][:name], email: params[:user][:email])
+      u.email_verified = false
+
+      expect do
+        post :resend, params: { email_verified: false }
+        raise Net::SMTPAuthenticationError
+      end.to raise_error { Net::SMTPAuthenticationError }
+    end
   end
 
   describe "GET | POST #confirm" do