Improve flash message handling in users#new

[rails.git] / app / controllers / users_controller.rb

diff --git a/app/controllers/users_controller.rb b/app/controllers/users_controller.rb
index e1ecfef80a3a72e476e5df211ee31e016bfe8e49..06df8f2be074e587f6624545ce71c7183cc441ea 100644 (file)
--- a/app/controllers/users_controller.rb
+++ b/app/controllers/users_controller.rb
@@ -60,6 +60,8 @@ class UsersController < ApplicationController
                  session[:referer]
                end
 
+    parse_oauth_referer @referer
+
     append_content_security_policy_directives(
       :form_action => %w[accounts.google.com *.facebook.com login.live.com github.com meta.wikimedia.org]
     )
@@ -69,13 +71,18 @@ class UsersController < ApplicationController
       # page, instead send them to the home page
       redirect_to @referer || { :controller => "site", :action => "index" }
     elsif params.key?(:auth_provider) && params.key?(:auth_uid)
+      @email_hmac = params[:email_hmac]
+
       self.current_user = User.new(:email => params[:email],
-                                   :email_confirmation => params[:email],
                                    :display_name => params[:nickname],
                                    :auth_provider => params[:auth_provider],
                                    :auth_uid => params[:auth_uid])
 
-      flash.now[:notice] = render_to_string :partial => "auth_association"
+      if current_user.valid? || current_user.errors[:email].empty?
+        flash.now[:notice] = render_to_string :partial => "auth_association"
+      else
+        flash.now[:warning] = t ".duplicate_social_email"
+      end
     else
       check_signup_allowed
 
@@ -91,7 +98,7 @@ class UsersController < ApplicationController
 
       Rails.logger.info "create: #{session[:referer]}"
 
-      if current_user.auth_provider.present? && current_user.pass_crypt.empty?
+      if current_user.auth_uid.present?
         # We are creating an account with external authentication and
         # no password was specified so create a random one
         current_user.pass_crypt = SecureRandom.base64(16)
@@ -103,12 +110,12 @@ class UsersController < ApplicationController
         render :action => "new"
       elsif current_user.auth_provider.present?
         # Verify external authenticator before moving on
-        session[:new_user] = current_user.slice("email", "display_name", "pass_crypt", "pass_crypt_confirmation", "consider_pd")
+        session[:new_user] = current_user.slice("email", "display_name", "pass_crypt", "pass_crypt_confirmation")
         redirect_to auth_url(current_user.auth_provider, current_user.auth_uid), :status => :temporary_redirect
       else
         # Save the user record
-        session[:new_user] = current_user.slice("email", "display_name", "pass_crypt", "pass_crypt_confirmation", "consider_pd")
-        save_new_user
+        session[:new_user] = current_user.slice("email", "display_name", "pass_crypt", "pass_crypt_confirmation")
+        save_new_user params[:email_hmac]
       end
     end
   end
@@ -132,7 +139,7 @@ class UsersController < ApplicationController
       if current_user&.terms_agreed?
         # Already agreed to terms, so just show settings
         redirect_to edit_account_path
-      elsif current_user.nil? && session[:new_user].nil?
+      elsif current_user.nil?
         redirect_to login_path(:referer => request.fullpath)
       end
     end
@@ -224,9 +231,9 @@ class UsersController < ApplicationController
     elsif session[:new_user]
       session[:new_user]["auth_provider"] = provider
       session[:new_user]["auth_uid"] = uid
-      session[:new_user]["verified_email"] = email if email_verified
 
-      save_new_user
+      email_hmac = UsersController.message_hmac(email) if email_verified && email
+      save_new_user email_hmac
     else
       user = User.find_by(:auth_provider => provider, :auth_uid => uid)
 
@@ -248,7 +255,8 @@ class UsersController < ApplicationController
           failed_login t("sessions.new.auth failure")
         end
       else
-        redirect_to :action => "new", :nickname => name, :email => email,
+        email_hmac = UsersController.message_hmac(email) if email_verified && email
+        redirect_to :action => "new", :nickname => name, :email => email, :email_hmac => email_hmac,
                     :auth_provider => provider, :auth_uid => uid
       end
     end
@@ -264,14 +272,18 @@ class UsersController < ApplicationController
     redirect_to origin || login_url
   end
 
+  def self.message_hmac(text)
+    sha256 = Digest::SHA256.new
+    sha256 << Rails.application.key_generator.generate_key("openstreetmap/email_address")
+    sha256 << text
+    Base64.urlsafe_encode64(sha256.digest)
+  end
+
   private
 
-  def save_new_user
+  def save_new_user(email_hmac)
     new_user = session.delete(:new_user)
-    verified_email = new_user.delete("verified_email")
-
     self.current_user = User.new(new_user)
-
     if check_signup_allowed(current_user.email)
       current_user.data_public = true
       current_user.description = "" if current_user.description.nil?
@@ -284,7 +296,7 @@ class UsersController < ApplicationController
       if current_user.auth_uid.blank?
         current_user.auth_provider = nil
         current_user.auth_uid = nil
-      elsif current_user.email == verified_email
+      elsif email_hmac && ActiveSupport::SecurityUtils.secure_compare(email_hmac, UsersController.message_hmac(current_user.email))
         current_user.activate
       end
 
@@ -336,7 +348,7 @@ class UsersController < ApplicationController
   ##
   # return permitted user parameters
   def user_params
-    params.require(:user).permit(:email, :email_confirmation, :display_name,
+    params.require(:user).permit(:email, :display_name,
                                  :auth_provider, :auth_uid,
                                  :pass_crypt, :pass_crypt_confirmation,
                                  :consider_pd)