X-Git-Url: https://git.openstreetmap.org./rails.git/blobdiff_plain/dc2a2c8ebd1a11e4a64555fda22c6859a51defff..e0b175d3bd3ef655a20273dc2b7f04a8a34bb5f6:/app/controllers/user_controller.rb

diff --git a/app/controllers/user_controller.rb b/app/controllers/user_controller.rb
index 1a7f3810a..54e2fa9c0 100644
--- a/app/controllers/user_controller.rb
+++ b/app/controllers/user_controller.rb
@@ -1,23 +1,24 @@
 class UserController < ApplicationController
   layout "site", :except => [:api_details]
 
-  skip_before_filter :verify_authenticity_token, :only => [:api_read, :api_details, :api_gpx_files]
-  before_filter :disable_terms_redirect, :only => [:terms, :save, :logout, :api_details]
-  before_filter :authorize, :only => [:api_details, :api_gpx_files]
-  before_filter :authorize_web, :except => [:api_read, :api_details, :api_gpx_files]
-  before_filter :set_locale, :except => [:api_read, :api_details, :api_gpx_files]
-  before_filter :require_user, :only => [:account, :go_public, :make_friend, :remove_friend]
-  before_filter :require_self, :only => [:account]
-  before_filter :check_database_readable, :except => [:login, :api_read, :api_details, :api_gpx_files]
-  before_filter :check_database_writable, :only => [:new, :account, :confirm, :confirm_email, :lost_password, :reset_password, :go_public, :make_friend, :remove_friend]
-  before_filter :check_api_readable, :only => [:api_read, :api_details, :api_gpx_files]
-  before_filter :require_allow_read_prefs, :only => [:api_details]
-  before_filter :require_allow_read_gpx, :only => [:api_gpx_files]
-  before_filter :require_cookies, :only => [:new, :login, :confirm]
-  before_filter :require_administrator, :only => [:set_status, :delete, :list]
-  around_filter :api_call_handle_error, :only => [:api_read, :api_details, :api_gpx_files]
-  before_filter :lookup_user_by_id, :only => [:api_read]
-  before_filter :lookup_user_by_name, :only => [:set_status, :delete]
+  skip_before_action :verify_authenticity_token, :only => [:api_read, :api_details, :api_gpx_files, :auth_success]
+  before_action :disable_terms_redirect, :only => [:terms, :save, :logout, :api_details]
+  before_action :authorize, :only => [:api_details, :api_gpx_files]
+  before_action :authorize_web, :except => [:api_read, :api_details, :api_gpx_files]
+  before_action :set_locale, :except => [:api_read, :api_details, :api_gpx_files]
+  before_action :require_user, :only => [:account, :go_public, :make_friend, :remove_friend]
+  before_action :require_self, :only => [:account]
+  before_action :check_database_readable, :except => [:login, :api_read, :api_details, :api_gpx_files]
+  before_action :check_database_writable, :only => [:new, :account, :confirm, :confirm_email, :lost_password, :reset_password, :go_public, :make_friend, :remove_friend]
+  before_action :check_api_readable, :only => [:api_read, :api_details, :api_gpx_files]
+  before_action :require_allow_read_prefs, :only => [:api_details]
+  before_action :require_allow_read_gpx, :only => [:api_gpx_files]
+  before_action :require_cookies, :only => [:new, :login, :confirm]
+  before_action :require_administrator, :only => [:set_status, :delete, :list]
+  around_action :api_call_handle_error, :only => [:api_read, :api_details, :api_gpx_files]
+  before_action :lookup_user_by_id, :only => [:api_read]
+  before_action :lookup_user_by_name, :only => [:set_status, :delete]
+  before_action :allow_thirdparty_images, :only => [:view, :account]
 
   def terms
     @legale = params[:legale] || OSM.ip_to_country(request.remote_ip) || DEFAULT_LEGALE
@@ -28,10 +29,10 @@ class UserController < ApplicationController
     else
       @title = t "user.terms.title"
 
-      if @user && @user.terms_agreed?
+      if current_user && current_user.terms_agreed?
         # Already agreed to terms, so just show settings
-        redirect_to :action => :account, :display_name => @user.display_name
-      elsif @user.nil? && session[:new_user].nil?
+        redirect_to :action => :account, :display_name => current_user.display_name
+      elsif current_user.nil? && session[:new_user].nil?
         redirect_to :action => :login, :referer => request.fullpath
       end
     end
@@ -41,71 +42,73 @@ class UserController < ApplicationController
     @title = t "user.new.title"
 
     if params[:decline]
-      if @user
-        @user.terms_seen = true
+      if current_user
+        current_user.terms_seen = true
 
-        if @user.save
-          flash[:notice] = t "user.new.terms declined", :url => t("user.new.terms declined url")
-        end
+        flash[:notice] = t("user.new.terms declined", :url => t("user.new.terms declined url")).html_safe if current_user.save
 
         if params[:referer]
           redirect_to params[:referer]
         else
-          redirect_to :action => :account, :display_name => @user.display_name
+          redirect_to :action => :account, :display_name => current_user.display_name
         end
       else
         redirect_to t("user.terms.declined")
       end
-    elsif @user
-      unless @user.terms_agreed?
-        @user.consider_pd = params[:user][:consider_pd]
-        @user.terms_agreed = Time.now.getutc
-        @user.terms_seen = true
+    elsif current_user
+      unless current_user.terms_agreed?
+        current_user.consider_pd = params[:user][:consider_pd]
+        current_user.terms_agreed = Time.now.getutc
+        current_user.terms_seen = true
 
-        flash[:notice] = t "user.new.terms accepted" if @user.save
+        flash[:notice] = t "user.new.terms accepted" if current_user.save
       end
 
       if params[:referer]
         redirect_to params[:referer]
       else
-        redirect_to :action => :account, :display_name => @user.display_name
+        redirect_to :action => :account, :display_name => current_user.display_name
       end
     else
-      @user = session.delete(:new_user)
-
-      if check_signup_allowed(@user.email)
-        @user.data_public = true
-        @user.description = "" if @user.description.nil?
-        @user.creation_ip = request.remote_ip
-        @user.languages = http_accept_language.user_preferred_languages
-        @user.terms_agreed = Time.now.getutc
-        @user.terms_seen = true
-        @user.openid_url = nil if @user.openid_url && @user.openid_url.empty?
-
-        if @user.save
+      self.current_user = session.delete(:new_user)
+
+      if check_signup_allowed(current_user.email)
+        current_user.data_public = true
+        current_user.description = "" if current_user.description.nil?
+        current_user.creation_ip = request.remote_ip
+        current_user.languages = http_accept_language.user_preferred_languages
+        current_user.terms_agreed = Time.now.getutc
+        current_user.terms_seen = true
+
+        if current_user.auth_uid.blank?
+          current_user.auth_provider = nil
+          current_user.auth_uid = nil
+        end
+
+        if current_user.save
           flash[:piwik_goal] = PIWIK["goals"]["signup"] if defined?(PIWIK)
 
           referer = welcome_path
 
           begin
             uri = URI(session[:referer])
-            /map=(.*)\/(.*)\/(.*)/.match(uri.fragment) do |m|
+            %r{map=(.*)/(.*)/(.*)}.match(uri.fragment) do |m|
               editor = Rack::Utils.parse_query(uri.query).slice("editor")
               referer = welcome_path({ "zoom" => m[1],
                                        "lat" => m[2],
                                        "lon" => m[3] }.merge(editor))
             end
-          rescue
+          rescue StandardError
             # Use default
           end
 
-          if @user.status == "active"
+          if current_user.status == "active"
             session[:referer] = referer
-            successful_login(@user)
+            successful_login(current_user)
           else
-            session[:token] = @user.tokens.create.token
-            Notifier.signup_confirm(@user, @user.tokens.create(:referer => referer)).deliver_now
-            redirect_to :action => "confirm", :display_name => @user.display_name
+            session[:token] = current_user.tokens.create.token
+            Notifier.signup_confirm(current_user, current_user.tokens.create(:referer => referer)).deliver_now
+            redirect_to :action => "confirm", :display_name => current_user.display_name
           end
         else
           render :action => "new", :referer => params[:referer]
@@ -116,43 +119,36 @@ class UserController < ApplicationController
 
   def account
     @title = t "user.account.title"
-    @tokens = @user.oauth_tokens.authorized
+    @tokens = current_user.oauth_tokens.authorized
 
     if params[:user] && params[:user][:display_name] && params[:user][:description]
-      if params[:user][:openid_url] &&
-         params[:user][:openid_url].length > 0 &&
-         params[:user][:openid_url] != @user.openid_url
-        # If the OpenID has changed, we want to check that it is a
-        # valid OpenID and one the user has control over before saving
-        # it as a password equivalent for the user.
-        session[:new_user_settings] = params
-        openid_verify(params[:user][:openid_url], @user)
+      if params[:user][:auth_provider].blank? ||
+         (params[:user][:auth_provider] == current_user.auth_provider &&
+          params[:user][:auth_uid] == current_user.auth_uid)
+        update_user(current_user, params)
       else
-        update_user(@user, params)
+        session[:new_user_settings] = params
+        redirect_to auth_url(params[:user][:auth_provider], params[:user][:auth_uid])
       end
-    elsif using_open_id?
-      # The redirect from the OpenID provider reenters here
-      # again and we need to pass the parameters through to
-      # the open_id_authentication function
-      settings = session.delete(:new_user_settings)
-      openid_verify(nil, @user) do |user|
-        update_user(user, settings)
+    elsif errors = session.delete(:user_errors)
+      errors.each do |attribute, error|
+        current_user.errors.add(attribute, error)
       end
     end
   end
 
   def go_public
-    @user.data_public = true
-    @user.save
+    current_user.data_public = true
+    current_user.save
     flash[:notice] = t "user.go_public.flash success"
-    redirect_to :controller => "user", :action => "account", :display_name => @user.display_name
+    redirect_to :action => "account", :display_name => current_user.display_name
   end
 
   def lost_password
     @title = t "user.lost_password.title"
 
     if params[:user] && params[:user][:email]
-      user = User.visible.find_by_email(params[:user][:email])
+      user = User.visible.find_by(:email => params[:user][:email])
 
       if user.nil?
         users = User.visible.where("LOWER(email) = LOWER(?)", params[:user][:email])
@@ -175,21 +171,21 @@ class UserController < ApplicationController
     @title = t "user.reset_password.title"
 
     if params[:token]
-      token = UserToken.find_by_token(params[:token])
+      token = UserToken.find_by(:token => params[:token])
 
       if token
-        @user = token.user
+        self.current_user = token.user
 
         if params[:user]
-          @user.pass_crypt = params[:user][:pass_crypt]
-          @user.pass_crypt_confirmation = params[:user][:pass_crypt_confirmation]
-          @user.status = "active" if @user.status == "pending"
-          @user.email_valid = true
+          current_user.pass_crypt = params[:user][:pass_crypt]
+          current_user.pass_crypt_confirmation = params[:user][:pass_crypt_confirmation]
+          current_user.status = "active" if current_user.status == "pending"
+          current_user.email_valid = true
 
-          if @user.save
+          if current_user.save
             token.destroy
             flash[:notice] = t "user.reset_password.flash changed"
-            redirect_to :action => "login"
+            successful_login(current_user)
           end
         end
       else
@@ -197,7 +193,7 @@ class UserController < ApplicationController
         redirect_to :action => "lost_password"
       end
     else
-      render :text => "", :status => :bad_request
+      head :bad_request
     end
   end
 
@@ -205,23 +201,11 @@ class UserController < ApplicationController
     @title = t "user.new.title"
     @referer = params[:referer] || session[:referer]
 
-    if using_open_id?
-      # The redirect from the OpenID provider reenters here
-      # again and we need to pass the parameters through to
-      # the open_id_authentication function
-      @user = session.delete(:new_user)
+    append_content_security_policy_directives(
+      :form_action => %w[accounts.google.com *.facebook.com login.live.com github.com meta.wikimedia.org]
+    )
 
-      openid_verify(nil, @user) do |user, verified_email|
-        user.status = "active" if user.email == verified_email
-      end
-
-      if @user.openid_url.nil? || @user.invalid?
-        render :action => "new"
-      else
-        session[:new_user] = @user
-        redirect_to :action => "terms"
-      end
-    elsif @user
+    if current_user
       # The user is logged in already, so don't show them the signup
       # page, instead send them to the home page
       if @referer
@@ -229,68 +213,69 @@ class UserController < ApplicationController
       else
         redirect_to :controller => "site", :action => "index"
       end
-    elsif params.key?(:openid)
-      @user = User.new(:email => params[:email],
-                       :email_confirmation => params[:email],
-                       :display_name => params[:nickname],
-                       :openid_url => params[:openid])
-
-      flash.now[:notice] = t "user.new.openid association"
+    elsif params.key?(:auth_provider) && params.key?(:auth_uid)
+      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"
     else
       check_signup_allowed
+
+      self.current_user = User.new
     end
   end
 
   def create
-    @user = User.new(user_params)
+    self.current_user = User.new(user_params)
 
-    if check_signup_allowed(@user.email)
+    if check_signup_allowed(current_user.email)
       session[:referer] = params[:referer]
 
-      @user.status = "pending"
+      current_user.status = "pending"
 
-      if @user.openid_url.present? && @user.pass_crypt.empty?
-        # We are creating an account with OpenID and no password
-        # was specified so create a random one
-        @user.pass_crypt = SecureRandom.base64(16)
-        @user.pass_crypt_confirmation = @user.pass_crypt
+      if current_user.auth_provider.present? && current_user.pass_crypt.empty?
+        # 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)
+        current_user.pass_crypt_confirmation = current_user.pass_crypt
       end
 
-      if @user.invalid?
+      if current_user.invalid?
         # Something is wrong with a new user, so rerender the form
         render :action => "new"
-      elsif @user.openid_url.present?
-        # Verify OpenID before moving on
-        session[:new_user] = @user
-        openid_verify(@user.openid_url, @user)
+      elsif current_user.auth_provider.present?
+        # Verify external authenticator before moving on
+        session[:new_user] = current_user
+        redirect_to auth_url(current_user.auth_provider, current_user.auth_uid)
       else
         # Save the user record
-        session[:new_user] = @user
+        session[:new_user] = current_user
         redirect_to :action => :terms
       end
     end
   end
 
   def login
-    if params[:username] || using_open_id?
-      session[:referer] ||= params[:referer]
+    session[:referer] = params[:referer] if params[:referer]
 
-      if using_open_id?
-        session[:remember_me] ||= params[:remember_me_openid]
-        openid_authentication(params[:openid_url])
-      else
-        session[:remember_me] ||= params[:remember_me]
-        password_authentication(params[:username], params[:password])
-      end
+    if params[:username].present? && params[:password].present?
+      session[:remember_me] ||= params[:remember_me]
+      password_authentication(params[:username], params[:password])
+    elsif params[:openid_url].present?
+      session[:remember_me] ||= params[:remember_me_openid]
+      redirect_to auth_url("openid", params[:openid_url], params[:referer])
     end
   end
 
   def logout
     @title = t "user.logout.title"
 
-    if params[:session] == request.session_options[:id]
+    if params[:session] == session.id
       if session[:token]
-        token = UserToken.find_by_token(session[:token])
+        token = UserToken.find_by(:token => session[:token])
         token.destroy if token
         session.delete(:token)
       end
@@ -306,7 +291,7 @@ class UserController < ApplicationController
 
   def confirm
     if request.post?
-      token = UserToken.find_by_token(params[:confirm_string])
+      token = UserToken.find_by(:token => params[:confirm_string])
       if token && token.user.active?
         flash[:error] = t("user.confirm.already active")
         redirect_to :action => "login"
@@ -317,12 +302,13 @@ class UserController < ApplicationController
         user = token.user
         user.status = "active"
         user.email_valid = true
+        flash[:notice] = gravatar_status_message(user) if gravatar_enable(user)
         user.save!
         referer = token.referer
         token.destroy
 
         if session[:token]
-          token = UserToken.find_by_token(session[:token])
+          token = UserToken.find_by(:token => session[:token])
           session.delete(:token)
         else
           token = nil
@@ -340,18 +326,21 @@ class UserController < ApplicationController
         end
       end
     else
-      user = User.find_by_display_name(params[:display_name])
+      user = User.find_by(:display_name => params[:display_name])
 
-      redirect_to root_path if !user || user.active?
+      redirect_to root_path if user.nil? || user.active?
     end
   end
 
   def confirm_resend
-    if user = User.find_by_display_name(params[:display_name])
-      Notifier.signup_confirm(user, user.tokens.create).deliver_now
-      flash[:notice] = t "user.confirm_resend.success", :email => user.email
+    user = User.find_by(:display_name => params[:display_name])
+    token = UserToken.find_by(:token => session[:token])
+
+    if user.nil? || token.nil? || token.user != user
+      flash[:error] = t "user.confirm_resend.failure", :name => params[:display_name]
     else
-      flash[:notice] = t "user.confirm_resend.failure", :name => params[:display_name]
+      Notifier.signup_confirm(user, user.tokens.create).deliver_now
+      flash[:notice] = t("user.confirm_resend.success", :email => user.email, :sender => SUPPORT_EMAIL).html_safe
     end
 
     redirect_to :action => "login"
@@ -359,78 +348,87 @@ class UserController < ApplicationController
 
   def confirm_email
     if request.post?
-      token = UserToken.find_by_token(params[:confirm_string])
+      token = UserToken.find_by(:token => params[:confirm_string])
       if token && token.user.new_email?
-        @user = token.user
-        @user.email = @user.new_email
-        @user.new_email = nil
-        @user.email_valid = true
-        if @user.save
-          flash[:notice] = t "user.confirm_email.success"
+        self.current_user = token.user
+        current_user.email = current_user.new_email
+        current_user.new_email = nil
+        current_user.email_valid = true
+        gravatar_enabled = gravatar_enable(current_user)
+        if current_user.save
+          flash[:notice] = if gravatar_enabled
+                             t("user.confirm_email.success") + " " + gravatar_status_message(current_user)
+                           else
+                             t("user.confirm_email.success")
+                           end
         else
-          flash[:errors] = @user.errors
+          flash[:errors] = current_user.errors
         end
         token.destroy
-        session[:user] = @user.id
-        redirect_to :action => "account", :display_name => @user.display_name
-      else
+        session[:user] = current_user.id
+        redirect_to :action => "account", :display_name => current_user.display_name
+      elsif token
         flash[:error] = t "user.confirm_email.failure"
-        redirect_to :action => "account", :display_name => @user.display_name
+        redirect_to :action => "account", :display_name => token.user.display_name
+      else
+        flash[:error] = t "user.confirm_email.unknown_token"
       end
     end
   end
 
   def api_read
-    render :text => "", :status => :gone unless @this_user.visible?
+    if @user.visible?
+      render :action => :api_read, :content_type => "text/xml"
+    else
+      head :gone
+    end
   end
 
   def api_details
-    @this_user = @user
-    render :action => :api_read
+    @user = current_user
+    render :action => :api_read, :content_type => "text/xml"
   end
 
   def api_gpx_files
     doc = OSM::API.new.get_xml_doc
-    @user.traces.each do |trace|
-      doc.root << trace.to_xml_node if trace.public? || trace.user == @user
+    current_user.traces.reload.each do |trace|
+      doc.root << trace.to_xml_node
     end
-    render :text => doc.to_s, :content_type => "text/xml"
+    render :xml => doc.to_s
   end
 
   def view
-    @this_user = User.find_by_display_name(params[:display_name])
+    @user = User.find_by(:display_name => params[:display_name])
 
-    if @this_user &&
-       (@this_user.visible? || (@user && @user.administrator?))
-      @title = @this_user.display_name
+    if @user &&
+       (@user.visible? || (current_user && current_user.administrator?))
+      @title = @user.display_name
     else
       render_unknown_user params[:display_name]
     end
   end
 
   def make_friend
-    @new_friend = User.find_by_display_name(params[:display_name])
+    @new_friend = User.find_by(:display_name => params[:display_name])
 
     if @new_friend
       if request.post?
         friend = Friend.new
-        friend.user_id = @user.id
-        friend.friend_user_id = @new_friend.id
-        if @user.is_friends_with?(@new_friend)
+        friend.befriender = current_user
+        friend.befriendee = @new_friend
+        if current_user.is_friends_with?(@new_friend)
           flash[:warning] = t "user.make_friend.already_a_friend", :name => @new_friend.display_name
+        elsif friend.save
+          flash[:notice] = t "user.make_friend.success", :name => @new_friend.display_name
+          Notifier.friend_notification(friend).deliver_now
         else
-          if friend.save
-            flash[:notice] = t "user.make_friend.success", :name => @new_friend.display_name
-            Notifier.friend_notification(friend).deliver_now
-          else
-            friend.add_error(t("user.make_friend.failed", :name => @new_friend.display_name))
-          end
+          friend.add_error(t("user.make_friend.failed", :name => @new_friend.display_name))
         end
 
         if params[:referer]
           redirect_to params[:referer]
         else
-          redirect_to :controller => "user", :action => "view"
+          redirect_to :action => "view"
         end
       end
     else
@@ -439,12 +437,12 @@ class UserController < ApplicationController
   end
 
   def remove_friend
-    @friend = User.find_by_display_name(params[:display_name])
+    @friend = User.find_by(:display_name => params[:display_name])
 
     if @friend
       if request.post?
-        if @user.is_friends_with?(@friend)
-          Friend.delete_all "user_id = #{@user.id} AND friend_user_id = #{@friend.id}"
+        if current_user.is_friends_with?(@friend)
+          Friend.where(:user_id => current_user.id, :friend_user_id => @friend.id).delete_all
           flash[:notice] = t "user.remove_friend.success", :name => @friend.display_name
         else
           flash[:error] = t "user.remove_friend.not_a_friend", :name => @friend.display_name
@@ -453,7 +451,7 @@ class UserController < ApplicationController
         if params[:referer]
           redirect_to params[:referer]
         else
-          redirect_to :controller => "user", :action => "view"
+          redirect_to :action => "view"
         end
       end
     else
@@ -464,16 +462,16 @@ class UserController < ApplicationController
   ##
   # sets a user's status
   def set_status
-    @this_user.status = params[:status]
-    @this_user.save
-    redirect_to :controller => "user", :action => "view", :display_name => params[:display_name]
+    @user.status = params[:status]
+    @user.save
+    redirect_to :action => "view", :display_name => params[:display_name]
   end
 
   ##
   # delete a user, marking them as deleted and removing personal data
   def delete
-    @this_user.delete
-    redirect_to :controller => "user", :action => "view", :display_name => params[:display_name]
+    @user.delete
+    redirect_to :action => "view", :display_name => params[:display_name]
   end
 
   ##
@@ -482,14 +480,16 @@ class UserController < ApplicationController
     if request.post?
       ids = params[:user].keys.collect(&:to_i)
 
-      User.update_all("status = 'confirmed'", :id => ids) if params[:confirm]
-      User.update_all("status = 'deleted'", :id => ids) if params[:hide]
+      User.where(:id => ids).update_all(:status => "confirmed") if params[:confirm]
+      User.where(:id => ids).update_all(:status => "deleted") if params[:hide]
 
       redirect_to url_for(:status => params[:status], :ip => params[:ip], :page => params[:page])
     else
+      @params = params.permit(:status, :ip)
+
       conditions = {}
-      conditions[:status] = params[:status] if params[:status]
-      conditions[:creation_ip] = params[:ip] if params[:ip]
+      conditions[:status] = @params[:status] if @params[:status]
+      conditions[:creation_ip] = @params[:ip] if @params[:ip]
 
       @user_pages, @users = paginate(:users,
                                      :conditions => conditions,
@@ -498,6 +498,76 @@ class UserController < ApplicationController
     end
   end
 
+  ##
+  # omniauth success callback
+  def auth_success
+    auth_info = request.env["omniauth.auth"]
+
+    provider = auth_info[:provider]
+    uid = auth_info[:uid]
+    name = auth_info[:info][:name]
+    email = auth_info[:info][:email]
+
+    case provider
+    when "openid"
+      email_verified = uid.match(%r{https://www.google.com/accounts/o8/id?(.*)}) ||
+                       uid.match(%r{https://me.yahoo.com/(.*)})
+    when "google", "facebook"
+      email_verified = true
+    else
+      email_verified = false
+    end
+
+    if settings = session.delete(:new_user_settings)
+      current_user.auth_provider = provider
+      current_user.auth_uid = uid
+
+      update_user(current_user, settings)
+
+      session[:user_errors] = current_user.errors.as_json
+
+      redirect_to :action => "account", :display_name => current_user.display_name
+    elsif session[:new_user]
+      session[:new_user].auth_provider = provider
+      session[:new_user].auth_uid = uid
+
+      session[:new_user].status = "active" if email_verified && email == session[:new_user].email
+
+      redirect_to :action => "terms"
+    else
+      user = User.find_by(:auth_provider => provider, :auth_uid => uid)
+
+      if user.nil? && provider == "google"
+        openid_url = auth_info[:extra][:id_info]["openid_id"]
+        user = User.find_by(:auth_provider => "openid", :auth_uid => openid_url) if openid_url
+        user.update(:auth_provider => provider, :auth_uid => uid) if user
+      end
+
+      if user
+        case user.status
+        when "pending" then
+          unconfirmed_login(user)
+        when "active", "confirmed" then
+          successful_login(user, request.env["omniauth.params"]["referer"])
+        when "suspended" then
+          failed_login t("user.login.account is suspended", :webmaster => "mailto:#{SUPPORT_EMAIL}").html_safe
+        else
+          failed_login t("user.login.auth failure")
+        end
+      else
+        redirect_to :action => "new", :nickname => name, :email => email,
+                    :auth_provider => provider, :auth_uid => uid
+      end
+    end
+  end
+
+  ##
+  # omniauth failure callback
+  def auth_failure
+    flash[:error] = t("user.auth_failure." + params[:message])
+    redirect_to params[:origin] || login_url
+  end
+
   private
 
   ##
@@ -508,100 +578,27 @@ class UserController < ApplicationController
     elsif user = User.authenticate(:username => username, :password => password, :pending => true)
       unconfirmed_login(user)
     elsif User.authenticate(:username => username, :password => password, :suspended => true)
-      failed_login t("user.login.account is suspended", :webmaster => "mailto:webmaster@openstreetmap.org")
+      failed_login t("user.login.account is suspended", :webmaster => "mailto:#{SUPPORT_EMAIL}").html_safe, username
     else
-      failed_login t("user.login.auth failure")
+      failed_login t("user.login.auth failure"), username
     end
   end
 
   ##
-  # handle OpenID authentication
-  def openid_authentication(openid_url)
-    # If we don't appear to have a user for this URL then ask the
-    # provider for some extra information to help with signup
-    if openid_url && User.find_by_openid_url(openid_url)
-      required = nil
-    else
-      required = [:nickname, :email, "http://axschema.org/namePerson/friendly", "http://axschema.org/contact/email"]
-    end
-
-    # Start the authentication
-    authenticate_with_open_id(openid_expand_url(openid_url), :method => :get, :required => required) do |result, identity_url, sreg, ax|
-      if result.successful?
-        # We need to use the openid url passed back from the OpenID provider
-        # rather than the one supplied by the user, as these can be different.
-        #
-        # For example, you can simply enter yahoo.com in the login box rather
-        # than a user specific url. Only once it comes back from the provider
-        # provider do we know the unique address for the user.
-        if user = User.find_by_openid_url(identity_url)
-          case user.status
-          when "pending" then
-            unconfirmed_login(user)
-          when "active", "confirmed" then
-            successful_login(user)
-          when "suspended" then
-            failed_login t("user.login.account is suspended", :webmaster => "mailto:webmaster@openstreetmap.org")
-          else
-            failed_login t("user.login.auth failure")
-          end
-        else
-          # Guard against not getting any extension data
-          sreg = {} if sreg.nil?
-          ax = {} if ax.nil?
-
-          # We don't have a user registered to this OpenID, so redirect
-          # to the create account page with username and email filled
-          # in if they have been given by the OpenID provider through
-          # the simple registration protocol.
-          nickname = sreg["nickname"] || ax["http://axschema.org/namePerson/friendly"].first
-          email = sreg["email"] || ax["http://axschema.org/contact/email"].first
-
-          redirect_to :controller => "user", :action => "new", :nickname => nickname, :email => email, :openid => identity_url
-        end
-      elsif result.missing?
-        failed_login t("user.login.openid missing provider")
-      elsif result.invalid?
-        failed_login t("user.login.openid invalid")
-      else
-        failed_login t("user.login.auth failure")
-      end
-    end
-  end
+  # return the URL to use for authentication
+  def auth_url(provider, uid, referer = nil)
+    params = { :provider => provider }
 
-  ##
-  # verify an OpenID URL
-  def openid_verify(openid_url, user)
-    user.openid_url = openid_url
-
-    authenticate_with_open_id(openid_expand_url(openid_url), :method => :get, :required => [:email, "http://axschema.org/contact/email"]) do |result, identity_url, sreg, ax|
-      if result.successful?
-        # Do we trust the emails this provider returns?
-        if openid_email_verified(identity_url)
-          # Guard against not getting any extension data
-          sreg = {} if sreg.nil?
-          ax = {} if ax.nil?
-
-          # Get the verified email
-          verified_email = sreg["email"] || ax["http://axschema.org/contact/email"].first
-        end
+    params[:openid_url] = openid_expand_url(uid) if provider == "openid"
 
-        # We need to use the openid url passed back from the OpenID provider
-        # rather than the one supplied by the user, as these can be different.
-        #
-        # For example, you can simply enter yahoo.com in the login box rather
-        # than a user specific url. Only once it comes back from the provider
-        # provider do we know the unique address for the user.
-        user.openid_url = identity_url
-        yield user, verified_email
-      elsif result.missing?
-        flash.now[:error] = t "user.login.openid missing provider"
-      elsif result.invalid?
-        flash.now[:error] = t "user.login.openid invalid"
-      else
-        flash.now[:error] = t "user.login.auth failure"
-      end
+    if referer.nil?
+      params[:origin] = request.path
+    else
+      params[:origin] = request.path + "?referer=" + CGI.escape(referer)
+      params[:referer] = referer
     end
+
+    auth_path(params)
   end
 
   ##
@@ -609,33 +606,25 @@ class UserController < ApplicationController
   # try and come up with the correct URL based on what the user entered
   def openid_expand_url(openid_url)
     if openid_url.nil?
-      return nil
-    elsif openid_url.match(/(.*)gmail.com(\/?)$/) || openid_url.match(/(.*)googlemail.com(\/?)$/)
+      nil
+    elsif openid_url.match(%r{(.*)gmail.com(/?)$}) || openid_url.match(%r{(.*)googlemail.com(/?)$})
       # Special case gmail.com as it is potentially a popular OpenID
       # provider and, unlike yahoo.com, where it works automatically, Google
       # have hidden their OpenID endpoint somewhere obscure this making it
       # somewhat less user friendly.
-      return "https://www.google.com/accounts/o8/id"
+      "https://www.google.com/accounts/o8/id"
     else
-      return openid_url
+      openid_url
     end
   end
 
-  ##
-  # check if we trust an OpenID provider to return a verified
-  # email, so that we can skpi verifying it ourselves
-  def openid_email_verified(openid_url)
-    openid_url.match(/https:\/\/www.google.com\/accounts\/o8\/id?(.*)/) ||
-      openid_url.match(/https:\/\/me.yahoo.com\/(.*)/)
-  end
-
   ##
   # process a successful login
-  def successful_login(user)
+  def successful_login(user, referer = nil)
     session[:user] = user.id
     session_expires_after 28.days if session[:remember_me]
 
-    target = session[:referer] || url_for(:controller => :site, :action => :index)
+    target = referer || session[:referer] || url_for(:controller => :site, :action => :index)
 
     # The user is logged in, so decide where to send them:
     #
@@ -644,7 +633,7 @@ class UserController < ApplicationController
     # - If they were referred to the login, send them back there.
     # - Otherwise, send them to the home page.
     if REQUIRE_TERMS_SEEN && !user.terms_seen
-      redirect_to :controller => :user, :action => :terms, :referer => target
+      redirect_to :action => :terms, :referer => target
     elsif user.blocked_on_view
       redirect_to user.blocked_on_view, :referer => target
     else
@@ -657,10 +646,11 @@ class UserController < ApplicationController
 
   ##
   # process a failed login
-  def failed_login(message)
+  def failed_login(message, username = nil)
     flash[:error] = message
 
-    redirect_to :action => "login", :referer =>  session[:referer]
+    redirect_to :action => "login", :referer => session[:referer],
+                :username => username, :remember_me => session[:remember_me]
 
     session.delete(:remember_me)
     session.delete(:referer)
@@ -669,6 +659,8 @@ class UserController < ApplicationController
   ##
   #
   def unconfirmed_login(user)
+    session[:token] = user.tokens.create.token
+
     redirect_to :action => "confirm", :display_name => user.display_name
 
     session.delete(:remember_me)
@@ -681,7 +673,7 @@ class UserController < ApplicationController
     user.display_name = params[:user][:display_name]
     user.new_email = params[:user][:new_email]
 
-    if params[:user][:pass_crypt].length > 0 || params[:user][:pass_crypt_confirmation].length > 0
+    unless params[:user][:pass_crypt].empty? && params[:user][:pass_crypt_confirmation].empty?
       user.pass_crypt = params[:user][:pass_crypt]
       user.pass_crypt_confirmation = params[:user][:pass_crypt_confirmation]
     end
@@ -708,13 +700,16 @@ class UserController < ApplicationController
     user.home_lat = params[:user][:home_lat]
     user.home_lon = params[:user][:home_lon]
 
-    if params[:user][:preferred_editor] == "default"
-      user.preferred_editor = nil
-    else
-      user.preferred_editor = params[:user][:preferred_editor]
-    end
+    user.preferred_editor = if params[:user][:preferred_editor] == "default"
+                              nil
+                            else
+                              params[:user][:preferred_editor]
+                            end
 
-    user.openid_url = nil if params[:user][:openid_url].blank?
+    if params[:user][:auth_provider].nil? || params[:user][:auth_provider].blank?
+      user.auth_provider = nil
+      user.auth_uid = nil
+    end
 
     if user.save
       set_locale
@@ -729,12 +724,12 @@ class UserController < ApplicationController
 
           begin
             Notifier.email_confirm(user, user.tokens.create).deliver_now
-          rescue
+          rescue StandardError
             # Ignore errors sending email
           end
         else
-          @user.errors.set(:new_email, @user.errors.get(:email))
-          @user.errors.set(:email, [])
+          current_user.errors.add(:new_email, current_user.errors[:email])
+          current_user.errors.add(:email, [])
         end
 
         user.restore_email!
@@ -746,39 +741,37 @@ class UserController < ApplicationController
   # require that the user is a administrator, or fill out a helpful error message
   # and return them to the user page.
   def require_administrator
-    if @user && !@user.administrator?
+    if current_user && !current_user.administrator?
       flash[:error] = t("user.filter.not_an_administrator")
 
       if params[:display_name]
-        redirect_to :controller => "user", :action => "view", :display_name => params[:display_name]
+        redirect_to :action => "view", :display_name => params[:display_name]
       else
-        redirect_to :controller => "user", :action => "login", :referer => request.fullpath
+        redirect_to :action => "login", :referer => request.fullpath
       end
-    elsif !@user
-      redirect_to :controller => "user", :action => "login", :referer => request.fullpath
+    elsif !current_user
+      redirect_to :action => "login", :referer => request.fullpath
     end
   end
 
   ##
   # require that the user in the URL is the logged in user
   def require_self
-    if params[:display_name] != @user.display_name
-      render :text => "", :status => :forbidden
-    end
+    head :forbidden if params[:display_name] != current_user.display_name
   end
 
   ##
-  # ensure that there is a "this_user" instance variable
+  # ensure that there is a "user" instance variable
   def lookup_user_by_id
-    @this_user = User.find(params[:id])
+    @user = User.find(params[:id])
   end
 
   ##
-  # ensure that there is a "this_user" instance variable
+  # ensure that there is a "user" instance variable
   def lookup_user_by_name
-    @this_user = User.find_by_display_name(params[:display_name])
+    @user = User.find_by(:display_name => params[:display_name])
   rescue ActiveRecord::RecordNotFound
-    redirect_to :controller => "user", :action => "view", :display_name => params[:display_name] unless @this_user
+    redirect_to :action => "view", :display_name => params[:display_name] unless @user
   end
 
   ##
@@ -793,17 +786,19 @@ class UserController < ApplicationController
   ##
   # return permitted user parameters
   def user_params
-    params.require(:user).permit(:email, :email_confirmation, :display_name, :openid_url, :pass_crypt, :pass_crypt_confirmation)
+    params.require(:user).permit(:email, :email_confirmation, :display_name,
+                                 :auth_provider, :auth_uid,
+                                 :pass_crypt, :pass_crypt_confirmation)
   end
 
   ##
   # check signup acls
   def check_signup_allowed(email = nil)
-    if email.nil?
-      domain = nil
-    else
-      domain = email.split("@").last
-    end
+    domain = if email.nil?
+               nil
+             else
+               email.split("@").last
+             end
 
     if blocked = Acl.no_account_creation(request.remote_ip, domain)
       logger.info "Blocked signup from #{request.remote_ip} for #{email}"
@@ -813,4 +808,27 @@ class UserController < ApplicationController
 
     !blocked
   end
+
+  ##
+  # check if this user has a gravatar and set the user pref is true
+  def gravatar_enable(user)
+    # code from example https://en.gravatar.com/site/implement/images/ruby/
+    return false if user.image.present?
+    hash = Digest::MD5.hexdigest(user.email.downcase)
+    url = "https://www.gravatar.com/avatar/#{hash}?d=404" # without d=404 we will always get an image back
+    response = OSM.http_client.get(URI.parse(url))
+    oldsetting = user.image_use_gravatar
+    user.image_use_gravatar = response.success?
+    oldsetting != user.image_use_gravatar
+  end
+
+  ##
+  # display a message about th current status of the gravatar setting
+  def gravatar_status_message(user)
+    if user.image_use_gravatar
+      t "user.account.gravatar.enabled"
+    else
+      t "user.account.gravatar.disabled"
+    end
+  end
 end