app/controllers/users_controller.rb

   1 class UsersController < ApplicationController
   2   layout "site"
   3
   4   skip_before_action :verify_authenticity_token, :only => [:auth_success]
   5   before_action :disable_terms_redirect, :only => [:terms, :save, :logout]
   6   before_action :authorize_web
   7   before_action :set_locale
   8   before_action :check_database_readable
   9
  10   authorize_resource
  11
  12   before_action :require_self, :only => [:account]
  13   before_action :check_database_writable, :only => [:new, :account, :confirm, :confirm_email, :lost_password, :reset_password, :go_public]
  14   before_action :require_cookies, :only => [:new, :login, :confirm]
  15   before_action :lookup_user_by_name, :only => [:set_status, :destroy]
  16   before_action :allow_thirdparty_images, :only => [:show, :account]
  17
  18   def terms
  19     @legale = params[:legale] || OSM.ip_to_country(request.remote_ip) || Settings.default_legale
  20     @text = OSM.legal_text_for_country(@legale)
  21
  22     if request.xhr?
  23       render :partial => "terms"
  24     else
  25       @title = t "users.terms.title"
  26
  27       if current_user&.terms_agreed?
  28         # Already agreed to terms, so just show settings
  29         redirect_to :action => :account, :display_name => current_user.display_name
  30       elsif current_user.nil? && session[:new_user].nil?
  31         redirect_to :action => :login, :referer => request.fullpath
  32       end
  33     end
  34   end
  35
  36   def save
  37     @title = t "users.new.title"
  38
  39     if params[:decline] || !(params[:read_tou] && params[:read_ct])
  40       if current_user
  41         current_user.terms_seen = true
  42
  43         flash[:notice] = t("users.new.terms declined", :url => t("users.new.terms declined url")).html_safe if current_user.save
  44
  45         if params[:referer]
  46           redirect_to safe_referer(params[:referer])
  47         else
  48           redirect_to :action => :account, :display_name => current_user.display_name
  49         end
  50       elsif params[:decline]
  51         redirect_to t("users.terms.declined")
  52       else
  53         redirect_to :action => :terms
  54       end
  55     elsif current_user
  56       unless current_user.terms_agreed?
  57         current_user.consider_pd = params[:user][:consider_pd]
  58         current_user.tou_agreed = Time.now.getutc
  59         current_user.terms_agreed = Time.now.getutc
  60         current_user.terms_seen = true
  61
  62         flash[:notice] = t "users.new.terms accepted" if current_user.save
  63       end
  64
  65       if params[:referer]
  66         redirect_to safe_referer(params[:referer])
  67       else
  68         redirect_to :action => :account, :display_name => current_user.display_name
  69       end
  70     else
  71       self.current_user = session.delete(:new_user)
  72
  73       if check_signup_allowed(current_user.email)
  74         current_user.data_public = true
  75         current_user.description = "" if current_user.description.nil?
  76         current_user.creation_ip = request.remote_ip
  77         current_user.languages = http_accept_language.user_preferred_languages
  78         current_user.terms_agreed = Time.now.getutc
  79         current_user.tou_agreed = Time.now.getutc
  80         current_user.terms_seen = true
  81
  82         if current_user.auth_uid.blank?
  83           current_user.auth_provider = nil
  84           current_user.auth_uid = nil
  85         end
  86
  87         if current_user.save
  88           flash[:piwik_goal] = PIWIK["goals"]["signup"] if defined?(PIWIK)
  89
  90           referer = welcome_path
  91
  92           begin
  93             uri = URI(session[:referer])
  94             %r{map=(.*)/(.*)/(.*)}.match(uri.fragment) do |m|
  95               editor = Rack::Utils.parse_query(uri.query).slice("editor")
  96               referer = welcome_path({ "zoom" => m[1],
  97                                        "lat" => m[2],
  98                                        "lon" => m[3] }.merge(editor))
  99             end
 100           rescue StandardError
 101             # Use default
 102           end
 103
 104           if current_user.status == "active"
 105             session[:referer] = referer
 106             successful_login(current_user)
 107           else
 108             session[:token] = current_user.tokens.create.token
 109             UserMailer.signup_confirm(current_user, current_user.tokens.create(:referer => referer)).deliver_later
 110             redirect_to :action => "confirm", :display_name => current_user.display_name
 111           end
 112         else
 113           render :action => "new", :referer => params[:referer]
 114         end
 115       end
 116     end
 117   end
 118
 119   def account
 120     @tokens = current_user.oauth_tokens.authorized
 121
 122     append_content_security_policy_directives(
 123       :form_action => %w[accounts.google.com *.facebook.com login.live.com github.com meta.wikimedia.org]
 124     )
 125
 126     if params[:user] && params[:user][:display_name] && params[:user][:description]
 127       if params[:user][:auth_provider].blank? ||
 128          (params[:user][:auth_provider] == current_user.auth_provider &&
 129           params[:user][:auth_uid] == current_user.auth_uid)
 130         update_user(current_user, params)
 131         redirect_to user_account_url(current_user) if current_user.errors.count.zero?
 132       else
 133         session[:new_user_settings] = params
 134         redirect_to auth_url(params[:user][:auth_provider], params[:user][:auth_uid])
 135       end
 136     elsif errors = session.delete(:user_errors)
 137       errors.each do |attribute, error|
 138         current_user.errors.add(attribute, error)
 139       end
 140     end
 141     @title = t "users.account.title"
 142   end
 143
 144   def go_public
 145     current_user.data_public = true
 146     current_user.save
 147     flash[:notice] = t "users.go_public.flash success"
 148     redirect_to :action => "account", :display_name => current_user.display_name
 149   end
 150
 151   def lost_password
 152     @title = t "users.lost_password.title"
 153
 154     if params[:email]
 155       user = User.visible.find_by(:email => params[:email])
 156
 157       if user.nil?
 158         users = User.visible.where("LOWER(email) = LOWER(?)", params[:email])
 159
 160         user = users.first if users.count == 1
 161       end
 162
 163       if user
 164         token = user.tokens.create
 165         UserMailer.lost_password(user, token).deliver_later
 166         flash[:notice] = t "users.lost_password.notice email on way"
 167         redirect_to :action => "login"
 168       else
 169         flash.now[:error] = t "users.lost_password.notice email cannot find"
 170       end
 171     end
 172   end
 173
 174   def reset_password
 175     @title = t "users.reset_password.title"
 176
 177     if params[:token]
 178       token = UserToken.find_by(:token => params[:token])
 179
 180       if token
 181         self.current_user = token.user
 182
 183         if params[:user]
 184           current_user.pass_crypt = params[:user][:pass_crypt]
 185           current_user.pass_crypt_confirmation = params[:user][:pass_crypt_confirmation]
 186           current_user.status = "active" if current_user.status == "pending"
 187           current_user.email_valid = true
 188
 189           if current_user.save
 190             token.destroy
 191             session[:fingerprint] = current_user.fingerprint
 192             flash[:notice] = t "users.reset_password.flash changed"
 193             successful_login(current_user)
 194           end
 195         end
 196       else
 197         flash[:error] = t "users.reset_password.flash token bad"
 198         redirect_to :action => "lost_password"
 199       end
 200     else
 201       head :bad_request
 202     end
 203   end
 204
 205   def new
 206     @title = t "users.new.title"
 207     @referer = if params[:referer]
 208                  safe_referer(params[:referer])
 209                else
 210                  session[:referer]
 211                end
 212
 213     append_content_security_policy_directives(
 214       :form_action => %w[accounts.google.com *.facebook.com login.live.com github.com meta.wikimedia.org]
 215     )
 216
 217     if current_user
 218       # The user is logged in already, so don't show them the signup
 219       # page, instead send them to the home page
 220       if @referer
 221         redirect_to @referer
 222       else
 223         redirect_to :controller => "site", :action => "index"
 224       end
 225     elsif params.key?(:auth_provider) && params.key?(:auth_uid)
 226       self.current_user = User.new(:email => params[:email],
 227                                    :email_confirmation => params[:email],
 228                                    :display_name => params[:nickname],
 229                                    :auth_provider => params[:auth_provider],
 230                                    :auth_uid => params[:auth_uid])
 231
 232       flash.now[:notice] = render_to_string :partial => "auth_association"
 233     else
 234       check_signup_allowed
 235
 236       self.current_user = User.new
 237     end
 238   end
 239
 240   def create
 241     self.current_user = User.new(user_params)
 242
 243     if check_signup_allowed(current_user.email)
 244       session[:referer] = safe_referer(params[:referer]) if params[:referer]
 245
 246       Rails.logger.info "create: #{session[:referer]}"
 247
 248       current_user.status = "pending"
 249
 250       if current_user.auth_provider.present? && current_user.pass_crypt.empty?
 251         # We are creating an account with external authentication and
 252         # no password was specified so create a random one
 253         current_user.pass_crypt = SecureRandom.base64(16)
 254         current_user.pass_crypt_confirmation = current_user.pass_crypt
 255       end
 256
 257       if current_user.invalid?
 258         # Something is wrong with a new user, so rerender the form
 259         render :action => "new"
 260       elsif current_user.auth_provider.present?
 261         # Verify external authenticator before moving on
 262         session[:new_user] = current_user
 263         redirect_to auth_url(current_user.auth_provider, current_user.auth_uid)
 264       else
 265         # Save the user record
 266         session[:new_user] = current_user
 267         redirect_to :action => :terms
 268       end
 269     end
 270   end
 271
 272   def login
 273     session[:referer] = safe_referer(params[:referer]) if params[:referer]
 274
 275     if params[:username].present? && params[:password].present?
 276       session[:remember_me] ||= params[:remember_me]
 277       password_authentication(params[:username], params[:password])
 278     end
 279   end
 280
 281   def logout
 282     @title = t "users.logout.title"
 283
 284     if request.post?
 285       if session[:token]
 286         token = UserToken.find_by(:token => session[:token])
 287         token&.destroy
 288         session.delete(:token)
 289       end
 290       session.delete(:user)
 291       session_expires_automatically
 292       if params[:referer]
 293         redirect_to safe_referer(params[:referer])
 294       else
 295         redirect_to :controller => "site", :action => "index"
 296       end
 297     end
 298   end
 299
 300   def confirm
 301     if request.post?
 302       token = UserToken.find_by(:token => params[:confirm_string])
 303       if token&.user&.active?
 304         flash[:error] = t("users.confirm.already active")
 305         redirect_to :action => "login"
 306       elsif !token || token.expired?
 307         flash[:error] = t("users.confirm.unknown token")
 308         redirect_to :action => "confirm"
 309       else
 310         user = token.user
 311         user.status = "active"
 312         user.email_valid = true
 313         flash[:notice] = gravatar_status_message(user) if gravatar_enable(user)
 314         user.save!
 315         referer = safe_referer(token.referer) if token.referer
 316         token.destroy
 317
 318         if session[:token]
 319           token = UserToken.find_by(:token => session[:token])
 320           session.delete(:token)
 321         else
 322           token = nil
 323         end
 324
 325         if token.nil? || token.user != user
 326           flash[:notice] = t("users.confirm.success")
 327           redirect_to :action => :login, :referer => referer
 328         else
 329           token.destroy
 330
 331           session[:user] = user.id
 332           session[:fingerprint] = user.fingerprint
 333
 334           redirect_to referer || welcome_path
 335         end
 336       end
 337     else
 338       user = User.find_by(:display_name => params[:display_name])
 339
 340       redirect_to root_path if user.nil? || user.active?
 341     end
 342   end
 343
 344   def confirm_resend
 345     user = User.find_by(:display_name => params[:display_name])
 346     token = UserToken.find_by(:token => session[:token])
 347
 348     if user.nil? || token.nil? || token.user != user
 349       flash[:error] = t "users.confirm_resend.failure", :name => params[:display_name]
 350     else
 351       UserMailer.signup_confirm(user, user.tokens.create).deliver_later
 352       flash[:notice] = t "users.confirm_resend.success_html", :email => user.email, :sender => Settings.support_email
 353     end
 354
 355     redirect_to :action => "login"
 356   end
 357
 358   def confirm_email
 359     if request.post?
 360       token = UserToken.find_by(:token => params[:confirm_string])
 361       if token&.user&.new_email?
 362         self.current_user = token.user
 363         current_user.email = current_user.new_email
 364         current_user.new_email = nil
 365         current_user.email_valid = true
 366         gravatar_enabled = gravatar_enable(current_user)
 367         if current_user.save
 368           flash[:notice] = if gravatar_enabled
 369                              "#{t('users.confirm_email.success')} #{gravatar_status_message(current_user)}"
 370                            else
 371                              t("users.confirm_email.success")
 372                            end
 373         else
 374           flash[:errors] = current_user.errors
 375         end
 376         current_user.tokens.delete_all
 377         session[:user] = current_user.id
 378         session[:fingerprint] = current_user.fingerprint
 379         redirect_to :action => "account", :display_name => current_user.display_name
 380       elsif token
 381         flash[:error] = t "users.confirm_email.failure"
 382         redirect_to :action => "account", :display_name => token.user.display_name
 383       else
 384         flash[:error] = t "users.confirm_email.unknown_token"
 385       end
 386     end
 387   end
 388
 389   def show
 390     @user = User.find_by(:display_name => params[:display_name])
 391
 392     if @user &&
 393        (@user.visible? || current_user&.administrator?)
 394       @title = @user.display_name
 395     else
 396       render_unknown_user params[:display_name]
 397     end
 398   end
 399
 400   ##
 401   # sets a user's status
 402   def set_status
 403     @user.status = params[:status]
 404     @user.save
 405     redirect_to user_path(:display_name => params[:display_name])
 406   end
 407
 408   ##
 409   # delete a user, marking them as deleted and removing personal data
 410   def destroy
 411     @user.delete
 412     redirect_to user_path(:display_name => params[:display_name])
 413   end
 414
 415   ##
 416   # display a list of users matching specified criteria
 417   def index
 418     if request.post?
 419       ids = params[:user].keys.collect(&:to_i)
 420
 421       User.where(:id => ids).update_all(:status => "confirmed") if params[:confirm]
 422       User.where(:id => ids).update_all(:status => "deleted") if params[:hide]
 423
 424       redirect_to url_for(:status => params[:status], :ip => params[:ip], :page => params[:page])
 425     else
 426       @params = params.permit(:status, :ip)
 427
 428       conditions = {}
 429       conditions[:status] = @params[:status] if @params[:status]
 430       conditions[:creation_ip] = @params[:ip] if @params[:ip]
 431
 432       @user_pages, @users = paginate(:users,
 433                                      :conditions => conditions,
 434                                      :order => :id,
 435                                      :per_page => 50)
 436     end
 437   end
 438
 439   ##
 440   # omniauth success callback
 441   def auth_success
 442     auth_info = request.env["omniauth.auth"]
 443
 444     provider = auth_info[:provider]
 445     uid = auth_info[:uid]
 446     name = auth_info[:info][:name]
 447     email = auth_info[:info][:email]
 448
 449     case provider
 450     when "openid"
 451       email_verified = uid.match(%r{https://www.google.com/accounts/o8/id?(.*)}) ||
 452                        uid.match(%r{https://me.yahoo.com/(.*)})
 453     when "google", "facebook"
 454       email_verified = true
 455     else
 456       email_verified = false
 457     end
 458
 459     if settings = session.delete(:new_user_settings)
 460       current_user.auth_provider = provider
 461       current_user.auth_uid = uid
 462
 463       update_user(current_user, settings)
 464
 465       flash.discard
 466
 467       session[:user_errors] = current_user.errors.as_json
 468
 469       redirect_to :action => "account", :display_name => current_user.display_name
 470     elsif session[:new_user]
 471       session[:new_user].auth_provider = provider
 472       session[:new_user].auth_uid = uid
 473
 474       session[:new_user].status = "active" if email_verified && email == session[:new_user].email
 475
 476       redirect_to :action => "terms"
 477     else
 478       user = User.find_by(:auth_provider => provider, :auth_uid => uid)
 479
 480       if user.nil? && provider == "google"
 481         openid_url = auth_info[:extra][:id_info]["openid_id"]
 482         user = User.find_by(:auth_provider => "openid", :auth_uid => openid_url) if openid_url
 483         user&.update(:auth_provider => provider, :auth_uid => uid)
 484       end
 485
 486       if user
 487         case user.status
 488         when "pending"
 489           unconfirmed_login(user)
 490         when "active", "confirmed"
 491           successful_login(user, request.env["omniauth.params"]["referer"])
 492         when "suspended"
 493           failed_login t("users.login.account is suspended", :webmaster => "mailto:#{Settings.support_email}").html_safe
 494         else
 495           failed_login t("users.login.auth failure")
 496         end
 497       else
 498         redirect_to :action => "new", :nickname => name, :email => email,
 499                     :auth_provider => provider, :auth_uid => uid
 500       end
 501     end
 502   end
 503
 504   ##
 505   # omniauth failure callback
 506   def auth_failure
 507     flash[:error] = t("users.auth_failure.#{params[:message]}")
 508     redirect_to params[:origin] || login_url
 509   end
 510
 511   private
 512
 513   ##
 514   # handle password authentication
 515   def password_authentication(username, password)
 516     if user = User.authenticate(:username => username, :password => password)
 517       successful_login(user)
 518     elsif user = User.authenticate(:username => username, :password => password, :pending => true)
 519       unconfirmed_login(user)
 520     elsif User.authenticate(:username => username, :password => password, :suspended => true)
 521       failed_login t("users.login.account is suspended", :webmaster => "mailto:#{Settings.support_email}").html_safe, username
 522     else
 523       failed_login t("users.login.auth failure"), username
 524     end
 525   end
 526
 527   ##
 528   # return the URL to use for authentication
 529   def auth_url(provider, uid, referer = nil)
 530     params = { :provider => provider }
 531
 532     params[:openid_url] = openid_expand_url(uid) if provider == "openid"
 533
 534     if referer.nil?
 535       params[:origin] = request.path
 536     else
 537       params[:origin] = "#{request.path}?referer=#{CGI.escape(referer)}"
 538       params[:referer] = referer
 539     end
 540
 541     auth_path(params)
 542   end
 543
 544   ##
 545   # special case some common OpenID providers by applying heuristics to
 546   # try and come up with the correct URL based on what the user entered
 547   def openid_expand_url(openid_url)
 548     if openid_url.nil?
 549       nil
 550     elsif openid_url.match(%r{(.*)gmail.com(/?)$}) || openid_url.match(%r{(.*)googlemail.com(/?)$})
 551       # Special case gmail.com as it is potentially a popular OpenID
 552       # provider and, unlike yahoo.com, where it works automatically, Google
 553       # have hidden their OpenID endpoint somewhere obscure this making it
 554       # somewhat less user friendly.
 555       "https://www.google.com/accounts/o8/id"
 556     else
 557       openid_url
 558     end
 559   end
 560
 561   ##
 562   # process a successful login
 563   def successful_login(user, referer = nil)
 564     session[:user] = user.id
 565     session[:fingerprint] = user.fingerprint
 566     session_expires_after 28.days if session[:remember_me]
 567
 568     target = referer || session[:referer] || url_for(:controller => :site, :action => :index)
 569
 570     # The user is logged in, so decide where to send them:
 571     #
 572     # - If they haven't seen the contributor terms, send them there.
 573     # - If they have a block on them, show them that.
 574     # - If they were referred to the login, send them back there.
 575     # - Otherwise, send them to the home page.
 576     if !user.terms_seen
 577       redirect_to :action => :terms, :referer => target
 578     elsif user.blocked_on_view
 579       redirect_to user.blocked_on_view, :referer => target
 580     else
 581       redirect_to target
 582     end
 583
 584     session.delete(:remember_me)
 585     session.delete(:referer)
 586   end
 587
 588   ##
 589   # process a failed login
 590   def failed_login(message, username = nil)
 591     flash[:error] = message
 592
 593     redirect_to :action => "login", :referer => session[:referer],
 594                 :username => username, :remember_me => session[:remember_me]
 595
 596     session.delete(:remember_me)
 597     session.delete(:referer)
 598   end
 599
 600   ##
 601   #
 602   def unconfirmed_login(user)
 603     session[:token] = user.tokens.create.token
 604
 605     redirect_to :action => "confirm", :display_name => user.display_name
 606
 607     session.delete(:remember_me)
 608     session.delete(:referer)
 609   end
 610
 611   ##
 612   # update a user's details
 613   def update_user(user, params)
 614     user.display_name = params[:user][:display_name]
 615     user.new_email = params[:user][:new_email]
 616
 617     unless params[:user][:pass_crypt].empty? && params[:user][:pass_crypt_confirmation].empty?
 618       user.pass_crypt = params[:user][:pass_crypt]
 619       user.pass_crypt_confirmation = params[:user][:pass_crypt_confirmation]
 620     end
 621
 622     if params[:user][:description] != user.description
 623       user.description = params[:user][:description]
 624       user.description_format = "markdown"
 625     end
 626
 627     user.languages = params[:user][:languages].split(",")
 628
 629     case params[:avatar_action]
 630     when "new"
 631       user.avatar.attach(params[:user][:avatar])
 632       user.image_use_gravatar = false
 633     when "delete"
 634       user.avatar.purge_later
 635       user.image_use_gravatar = false
 636     when "gravatar"
 637       user.avatar.purge_later
 638       user.image_use_gravatar = true
 639     end
 640
 641     user.home_lat = params[:user][:home_lat]
 642     user.home_lon = params[:user][:home_lon]
 643
 644     user.preferred_editor = if params[:user][:preferred_editor] == "default"
 645                               nil
 646                             else
 647                               params[:user][:preferred_editor]
 648                             end
 649
 650     if params[:user][:auth_provider].nil? || params[:user][:auth_provider].blank?
 651       user.auth_provider = nil
 652       user.auth_uid = nil
 653     end
 654
 655     if user.save
 656       session[:fingerprint] = user.fingerprint
 657
 658       set_locale(:reset => true)
 659
 660       if user.new_email.blank? || user.new_email == user.email
 661         flash[:notice] = t "users.account.flash update success"
 662       else
 663         user.email = user.new_email
 664
 665         if user.valid?
 666           flash[:notice] = t "users.account.flash update success confirm needed"
 667
 668           begin
 669             UserMailer.email_confirm(user, user.tokens.create).deliver_later
 670           rescue StandardError
 671             # Ignore errors sending email
 672           end
 673         else
 674           current_user.errors.add(:new_email, current_user.errors[:email])
 675           current_user.errors.add(:email, [])
 676         end
 677
 678         user.restore_email!
 679       end
 680     end
 681   end
 682
 683   ##
 684   # require that the user in the URL is the logged in user
 685   def require_self
 686     head :forbidden if params[:display_name] != current_user.display_name
 687   end
 688
 689   ##
 690   # ensure that there is a "user" instance variable
 691   def lookup_user_by_name
 692     @user = User.find_by(:display_name => params[:display_name])
 693   rescue ActiveRecord::RecordNotFound
 694     redirect_to :action => "view", :display_name => params[:display_name] unless @user
 695   end
 696
 697   ##
 698   #
 699   def disable_terms_redirect
 700     # this is necessary otherwise going to the user terms page, when
 701     # having not agreed already would cause an infinite redirect loop.
 702     # it's .now so that this doesn't propagate to other pages.
 703     flash.now[:skip_terms] = true
 704   end
 705
 706   ##
 707   # return permitted user parameters
 708   def user_params
 709     params.require(:user).permit(:email, :email_confirmation, :display_name,
 710                                  :auth_provider, :auth_uid,
 711                                  :pass_crypt, :pass_crypt_confirmation)
 712   end
 713
 714   ##
 715   # check signup acls
 716   def check_signup_allowed(email = nil)
 717     domain = if email.nil?
 718                nil
 719              else
 720                email.split("@").last
 721              end
 722
 723     mx_servers = if domain.nil?
 724                    nil
 725                  else
 726                    domain_mx_servers(domain)
 727                  end
 728
 729     if blocked = Acl.no_account_creation(request.remote_ip, :domain => domain, :mx => mx_servers)
 730       logger.info "Blocked signup from #{request.remote_ip} for #{email}"
 731
 732       render :action => "blocked"
 733     end
 734
 735     !blocked
 736   end
 737
 738   ##
 739   # get list of MX servers for a domains
 740   def domain_mx_servers(domain)
 741     Resolv::DNS.open do |dns|
 742       dns.getresources(domain, Resolv::DNS::Resource::IN::MX).collect(&:exchange).collect(&:to_s)
 743     end
 744   end
 745
 746   ##
 747   # check if this user has a gravatar and set the user pref is true
 748   def gravatar_enable(user)
 749     # code from example https://en.gravatar.com/site/implement/images/ruby/
 750     return false if user.avatar.attached?
 751
 752     hash = Digest::MD5.hexdigest(user.email.downcase)
 753     url = "https://www.gravatar.com/avatar/#{hash}?d=404" # without d=404 we will always get an image back
 754     response = OSM.http_client.get(URI.parse(url))
 755     oldsetting = user.image_use_gravatar
 756     user.image_use_gravatar = response.success?
 757     oldsetting != user.image_use_gravatar
 758   end
 759
 760   ##
 761   # display a message about th current status of the gravatar setting
 762   def gravatar_status_message(user)
 763     if user.image_use_gravatar
 764       t "users.account.gravatar.enabled"
 765     else
 766       t "users.account.gravatar.disabled"
 767     end
 768   end
 769 end