Set font on title
[rails.git] / app / controllers / user_controller.rb
1 class UserController < ApplicationController
2   layout "site", :except => [:api_details]
3
4   skip_before_action :verify_authenticity_token, :only => [:api_read, :api_details, :api_gpx_files, :auth_success]
5   before_action :disable_terms_redirect, :only => [:terms, :save, :logout, :api_details]
6   before_action :authorize, :only => [:api_details, :api_gpx_files]
7   before_action :authorize_web, :except => [:api_read, :api_details, :api_gpx_files]
8   before_action :set_locale, :except => [:api_read, :api_details, :api_gpx_files]
9   before_action :require_user, :only => [:account, :go_public, :make_friend, :remove_friend]
10   before_action :require_self, :only => [:account]
11   before_action :check_database_readable, :except => [:login, :api_read, :api_details, :api_gpx_files]
12   before_action :check_database_writable, :only => [:new, :account, :confirm, :confirm_email, :lost_password, :reset_password, :go_public, :make_friend, :remove_friend]
13   before_action :check_api_readable, :only => [:api_read, :api_details, :api_gpx_files]
14   before_action :require_allow_read_prefs, :only => [:api_details]
15   before_action :require_allow_read_gpx, :only => [:api_gpx_files]
16   before_action :require_cookies, :only => [:new, :login, :confirm]
17   before_action :require_administrator, :only => [:set_status, :delete, :list]
18   around_action :api_call_handle_error, :only => [:api_read, :api_details, :api_gpx_files]
19   before_action :lookup_user_by_id, :only => [:api_read]
20   before_action :lookup_user_by_name, :only => [:set_status, :delete]
21
22   def terms
23     @legale = params[:legale] || OSM.ip_to_country(request.remote_ip) || DEFAULT_LEGALE
24     @text = OSM.legal_text_for_country(@legale)
25
26     if request.xhr?
27       render :partial => "terms"
28     else
29       @title = t "user.terms.title"
30
31       if @user && @user.terms_agreed?
32         # Already agreed to terms, so just show settings
33         redirect_to :action => :account, :display_name => @user.display_name
34       elsif @user.nil? && session[:new_user].nil?
35         redirect_to :action => :login, :referer => request.fullpath
36       end
37     end
38   end
39
40   def save
41     @title = t "user.new.title"
42
43     if params[:decline]
44       if @user
45         @user.terms_seen = true
46
47         if @user.save
48           flash[:notice] = t("user.new.terms declined", :url => t("user.new.terms declined url")).html_safe
49         end
50
51         if params[:referer]
52           redirect_to params[:referer]
53         else
54           redirect_to :action => :account, :display_name => @user.display_name
55         end
56       else
57         redirect_to t("user.terms.declined")
58       end
59     elsif @user
60       unless @user.terms_agreed?
61         @user.consider_pd = params[:user][:consider_pd]
62         @user.terms_agreed = Time.now.getutc
63         @user.terms_seen = true
64
65         flash[:notice] = t "user.new.terms accepted" if @user.save
66       end
67
68       if params[:referer]
69         redirect_to params[:referer]
70       else
71         redirect_to :action => :account, :display_name => @user.display_name
72       end
73     else
74       @user = session.delete(:new_user)
75
76       if check_signup_allowed(@user.email)
77         @user.data_public = true
78         @user.description = "" if @user.description.nil?
79         @user.creation_ip = request.remote_ip
80         @user.languages = http_accept_language.user_preferred_languages
81         @user.terms_agreed = Time.now.getutc
82         @user.terms_seen = true
83
84         if @user.auth_uid.nil? || @user.auth_uid.empty?
85           @user.auth_provider = nil
86           @user.auth_uid = nil
87         end
88
89         if @user.save
90           flash[:piwik_goal] = PIWIK["goals"]["signup"] if defined?(PIWIK)
91
92           referer = welcome_path
93
94           begin
95             uri = URI(session[:referer])
96             %r{map=(.*)/(.*)/(.*)}.match(uri.fragment) do |m|
97               editor = Rack::Utils.parse_query(uri.query).slice("editor")
98               referer = welcome_path({ "zoom" => m[1],
99                                        "lat" => m[2],
100                                        "lon" => m[3] }.merge(editor))
101             end
102           rescue
103             # Use default
104           end
105
106           if @user.status == "active"
107             session[:referer] = referer
108             successful_login(@user)
109           else
110             session[:token] = @user.tokens.create.token
111             Notifier.signup_confirm(@user, @user.tokens.create(:referer => referer)).deliver_now
112             redirect_to :action => "confirm", :display_name => @user.display_name
113           end
114         else
115           render :action => "new", :referer => params[:referer]
116         end
117       end
118     end
119   end
120
121   def account
122     @title = t "user.account.title"
123     @tokens = @user.oauth_tokens.authorized
124
125     if params[:user] && params[:user][:display_name] && params[:user][:description]
126       if params[:user][:auth_provider].blank? ||
127          (params[:user][:auth_provider] == @user.auth_provider &&
128           params[:user][:auth_uid] == @user.auth_uid)
129         update_user(@user, params)
130       else
131         session[:new_user_settings] = params
132         redirect_to auth_url(params[:user][:auth_provider], params[:user][:auth_uid])
133       end
134     elsif errors = session.delete(:user_errors)
135       errors.each do |attribute, error|
136         @user.errors.add(attribute, error)
137       end
138     end
139   end
140
141   def go_public
142     @user.data_public = true
143     @user.save
144     flash[:notice] = t "user.go_public.flash success"
145     redirect_to :action => "account", :display_name => @user.display_name
146   end
147
148   def lost_password
149     @title = t "user.lost_password.title"
150
151     if params[:user] && params[:user][:email]
152       user = User.visible.find_by(:email => params[:user][:email])
153
154       if user.nil?
155         users = User.visible.where("LOWER(email) = LOWER(?)", params[:user][:email])
156
157         user = users.first if users.count == 1
158       end
159
160       if user
161         token = user.tokens.create
162         Notifier.lost_password(user, token).deliver_now
163         flash[:notice] = t "user.lost_password.notice email on way"
164         redirect_to :action => "login"
165       else
166         flash.now[:error] = t "user.lost_password.notice email cannot find"
167       end
168     end
169   end
170
171   def reset_password
172     @title = t "user.reset_password.title"
173
174     if params[:token]
175       token = UserToken.find_by(:token => params[:token])
176
177       if token
178         @user = token.user
179
180         if params[:user]
181           @user.pass_crypt = params[:user][:pass_crypt]
182           @user.pass_crypt_confirmation = params[:user][:pass_crypt_confirmation]
183           @user.status = "active" if @user.status == "pending"
184           @user.email_valid = true
185
186           if @user.save
187             token.destroy
188             flash[:notice] = t "user.reset_password.flash changed"
189             successful_login(@user)
190           end
191         end
192       else
193         flash[:error] = t "user.reset_password.flash token bad"
194         redirect_to :action => "lost_password"
195       end
196     else
197       render :text => "", :status => :bad_request
198     end
199   end
200
201   def new
202     @title = t "user.new.title"
203     @referer = params[:referer] || session[:referer]
204
205     if @user
206       # The user is logged in already, so don't show them the signup
207       # page, instead send them to the home page
208       if @referer
209         redirect_to @referer
210       else
211         redirect_to :controller => "site", :action => "index"
212       end
213     elsif params.key?(:auth_provider) && params.key?(:auth_uid)
214       @user = User.new(:email => params[:email],
215                        :email_confirmation => params[:email],
216                        :display_name => params[:nickname],
217                        :auth_provider => params[:auth_provider],
218                        :auth_uid => params[:auth_uid])
219
220       flash.now[:notice] = render_to_string :partial => "auth_association"
221     else
222       check_signup_allowed
223     end
224   end
225
226   def create
227     @user = User.new(user_params)
228
229     if check_signup_allowed(@user.email)
230       session[:referer] = params[:referer]
231
232       @user.status = "pending"
233
234       if @user.auth_provider.present? && @user.pass_crypt.empty?
235         # We are creating an account with external authentication and
236         # no password was specified so create a random one
237         @user.pass_crypt = SecureRandom.base64(16)
238         @user.pass_crypt_confirmation = @user.pass_crypt
239       end
240
241       if @user.invalid?
242         # Something is wrong with a new user, so rerender the form
243         render :action => "new"
244       elsif @user.auth_provider.present?
245         # Verify external authenticator before moving on
246         session[:new_user] = @user
247         redirect_to auth_url(@user.auth_provider, @user.auth_uid)
248       else
249         # Save the user record
250         session[:new_user] = @user
251         redirect_to :action => :terms
252       end
253     end
254   end
255
256   def login
257     session[:referer] = params[:referer] if params[:referer]
258
259     if params[:username].present? && params[:password].present?
260       session[:remember_me] ||= params[:remember_me]
261       password_authentication(params[:username], params[:password])
262     elsif params[:openid_url].present?
263       session[:remember_me] ||= params[:remember_me_openid]
264       redirect_to auth_url("openid", params[:openid_url], params[:referer])
265     end
266   end
267
268   def logout
269     @title = t "user.logout.title"
270
271     if params[:session] == request.session_options[:id]
272       if session[:token]
273         token = UserToken.find_by(:token => session[:token])
274         token.destroy if token
275         session.delete(:token)
276       end
277       session.delete(:user)
278       session_expires_automatically
279       if params[:referer]
280         redirect_to params[:referer]
281       else
282         redirect_to :controller => "site", :action => "index"
283       end
284     end
285   end
286
287   def confirm
288     if request.post?
289       token = UserToken.find_by(:token => params[:confirm_string])
290       if token && token.user.active?
291         flash[:error] = t("user.confirm.already active")
292         redirect_to :action => "login"
293       elsif !token || token.expired?
294         flash[:error] = t("user.confirm.unknown token")
295         redirect_to :action => "confirm"
296       else
297         user = token.user
298         user.status = "active"
299         user.email_valid = true
300         flash[:notice] = gravatar_status_message(user) if gravatar_enable(user)
301         user.save!
302         referer = token.referer
303         token.destroy
304
305         if session[:token]
306           token = UserToken.find_by(:token => session[:token])
307           session.delete(:token)
308         else
309           token = nil
310         end
311
312         if token.nil? || token.user != user
313           flash[:notice] = t("user.confirm.success")
314           redirect_to :action => :login, :referer => referer
315         else
316           token.destroy
317
318           session[:user] = user.id
319
320           redirect_to referer || welcome_path
321         end
322       end
323     else
324       user = User.find_by(:display_name => params[:display_name])
325
326       redirect_to root_path if user.nil? || user.active?
327     end
328   end
329
330   def confirm_resend
331     user = User.find_by(:display_name => params[:display_name])
332     token = UserToken.find_by(:token => session[:token])
333
334     if user.nil? || token.nil? || token.user != user
335       flash[:error] = t "user.confirm_resend.failure", :name => params[:display_name]
336     else
337       Notifier.signup_confirm(user, user.tokens.create).deliver_now
338       flash[:notice] = t("user.confirm_resend.success", :email => user.email, :sender => SUPPORT_EMAIL).html_safe
339     end
340
341     redirect_to :action => "login"
342   end
343
344   def confirm_email
345     if request.post?
346       token = UserToken.find_by(:token => params[:confirm_string])
347       if token && token.user.new_email?
348         @user = token.user
349         @user.email = @user.new_email
350         @user.new_email = nil
351         @user.email_valid = true
352         gravatar_enabled = gravatar_enable(@user)
353         if @user.save
354           flash[:notice] = if gravatar_enabled
355                              t("user.confirm_email.success") + " " + gravatar_status_message(@user)
356                            else
357                              t("user.confirm_email.success")
358                            end
359         else
360           flash[:errors] = @user.errors
361         end
362         token.destroy
363         session[:user] = @user.id
364         redirect_to :action => "account", :display_name => @user.display_name
365       elsif token
366         flash[:error] = t "user.confirm_email.failure"
367         redirect_to :action => "account", :display_name => token.user.display_name
368       else
369         flash[:error] = t "user.confirm_email.unknown_token"
370       end
371     end
372   end
373
374   def api_read
375     if @this_user.visible?
376       render :action => :api_read, :content_type => "text/xml"
377     else
378       render :text => "", :status => :gone
379     end
380   end
381
382   def api_details
383     @this_user = @user
384     render :action => :api_read, :content_type => "text/xml"
385   end
386
387   def api_gpx_files
388     doc = OSM::API.new.get_xml_doc
389     @user.traces.reload.each do |trace|
390       doc.root << trace.to_xml_node
391     end
392     render :text => doc.to_s, :content_type => "text/xml"
393   end
394
395   def view
396     @this_user = User.find_by(:display_name => params[:display_name])
397
398     if @this_user &&
399        (@this_user.visible? || (@user && @user.administrator?))
400       @title = @this_user.display_name
401     else
402       render_unknown_user params[:display_name]
403     end
404   end
405
406   def make_friend
407     @new_friend = User.find_by(:display_name => params[:display_name])
408
409     if @new_friend
410       if request.post?
411         friend = Friend.new
412         friend.user_id = @user.id
413         friend.friend_user_id = @new_friend.id
414         if @user.is_friends_with?(@new_friend)
415           flash[:warning] = t "user.make_friend.already_a_friend", :name => @new_friend.display_name
416         elsif friend.save
417           flash[:notice] = t "user.make_friend.success", :name => @new_friend.display_name
418           Notifier.friend_notification(friend).deliver_now
419         else
420           friend.add_error(t("user.make_friend.failed", :name => @new_friend.display_name))
421         end
422
423         if params[:referer]
424           redirect_to params[:referer]
425         else
426           redirect_to :action => "view"
427         end
428       end
429     else
430       render_unknown_user params[:display_name]
431     end
432   end
433
434   def remove_friend
435     @friend = User.find_by(:display_name => params[:display_name])
436
437     if @friend
438       if request.post?
439         if @user.is_friends_with?(@friend)
440           Friend.delete_all "user_id = #{@user.id} AND friend_user_id = #{@friend.id}"
441           flash[:notice] = t "user.remove_friend.success", :name => @friend.display_name
442         else
443           flash[:error] = t "user.remove_friend.not_a_friend", :name => @friend.display_name
444         end
445
446         if params[:referer]
447           redirect_to params[:referer]
448         else
449           redirect_to :action => "view"
450         end
451       end
452     else
453       render_unknown_user params[:display_name]
454     end
455   end
456
457   ##
458   # sets a user's status
459   def set_status
460     @this_user.status = params[:status]
461     @this_user.save
462     redirect_to :action => "view", :display_name => params[:display_name]
463   end
464
465   ##
466   # delete a user, marking them as deleted and removing personal data
467   def delete
468     @this_user.delete
469     redirect_to :action => "view", :display_name => params[:display_name]
470   end
471
472   ##
473   # display a list of users matching specified criteria
474   def list
475     if request.post?
476       ids = params[:user].keys.collect(&:to_i)
477
478       User.where(:id => ids).update_all(:status => "confirmed") if params[:confirm]
479       User.where(:id => ids).update_all(:status => "deleted") if params[:hide]
480
481       redirect_to url_for(:status => params[:status], :ip => params[:ip], :page => params[:page])
482     else
483       conditions = {}
484       conditions[:status] = params[:status] if params[:status]
485       conditions[:creation_ip] = params[:ip] if params[:ip]
486
487       @user_pages, @users = paginate(:users,
488                                      :conditions => conditions,
489                                      :order => :id,
490                                      :per_page => 50)
491     end
492   end
493
494   ##
495   # omniauth success callback
496   def auth_success
497     auth_info = env["omniauth.auth"]
498
499     provider = auth_info[:provider]
500     uid = auth_info[:uid]
501     name = auth_info[:info][:name]
502     email = auth_info[:info][:email]
503
504     case provider
505     when "openid"
506       email_verified = uid.match(%r{https://www.google.com/accounts/o8/id?(.*)}) ||
507                        uid.match(%r{https://me.yahoo.com/(.*)})
508     when "google", "facebook"
509       email_verified = true
510     else
511       email_verified = false
512     end
513
514     if settings = session.delete(:new_user_settings)
515       @user.auth_provider = provider
516       @user.auth_uid = uid
517
518       update_user(@user, settings)
519
520       session[:user_errors] = @user.errors.as_json
521
522       redirect_to :action => "account", :display_name => @user.display_name
523     elsif session[:new_user]
524       session[:new_user].auth_provider = provider
525       session[:new_user].auth_uid = uid
526
527       if email_verified && email == session[:new_user].email
528         session[:new_user].status = "active"
529       end
530
531       redirect_to :action => "terms"
532     else
533       user = User.find_by(:auth_provider => provider, :auth_uid => uid)
534
535       if user.nil? && provider == "google"
536         openid_url = auth_info[:extra][:id_info]["openid_id"]
537         user = User.find_by(:auth_provider => "openid", :auth_uid => openid_url) if openid_url
538         user.update(:auth_provider => provider, :auth_uid => uid) if user
539       end
540
541       if user
542         case user.status
543         when "pending" then
544           unconfirmed_login(user)
545         when "active", "confirmed" then
546           successful_login(user, env["omniauth.params"]["referer"])
547         when "suspended" then
548           failed_login t("user.login.account is suspended", :webmaster => "mailto:#{SUPPORT_EMAIL}")
549         else
550           failed_login t("user.login.auth failure")
551         end
552       else
553         redirect_to :action => "new", :nickname => name, :email => email,
554                     :auth_provider => provider, :auth_uid => uid
555       end
556     end
557   end
558
559   ##
560   # omniauth failure callback
561   def auth_failure
562     flash[:error] = t("user.auth_failure." + params[:message])
563     redirect_to params[:origin] || login_url
564   end
565
566   private
567
568   ##
569   # handle password authentication
570   def password_authentication(username, password)
571     if user = User.authenticate(:username => username, :password => password)
572       successful_login(user)
573     elsif user = User.authenticate(:username => username, :password => password, :pending => true)
574       unconfirmed_login(user)
575     elsif User.authenticate(:username => username, :password => password, :suspended => true)
576       failed_login t("user.login.account is suspended", :webmaster => "mailto:#{SUPPORT_EMAIL}"), username
577     else
578       failed_login t("user.login.auth failure"), username
579     end
580   end
581
582   ##
583   # return the URL to use for authentication
584   def auth_url(provider, uid, referer = nil)
585     params = { :provider => provider }
586
587     params[:openid_url] = openid_expand_url(uid) if provider == "openid"
588
589     if referer.nil?
590       params[:origin] = request.path
591     else
592       params[:origin] = request.path + "?referer=" + CGI.escape(referer)
593       params[:referer] = referer
594     end
595
596     auth_path(params)
597   end
598
599   ##
600   # special case some common OpenID providers by applying heuristics to
601   # try and come up with the correct URL based on what the user entered
602   def openid_expand_url(openid_url)
603     if openid_url.nil?
604       nil
605     elsif openid_url.match(%r{(.*)gmail.com(/?)$}) || openid_url.match(%r{(.*)googlemail.com(/?)$})
606       # Special case gmail.com as it is potentially a popular OpenID
607       # provider and, unlike yahoo.com, where it works automatically, Google
608       # have hidden their OpenID endpoint somewhere obscure this making it
609       # somewhat less user friendly.
610       "https://www.google.com/accounts/o8/id"
611     else
612       openid_url
613     end
614   end
615
616   ##
617   # process a successful login
618   def successful_login(user, referer = nil)
619     session[:user] = user.id
620     session_expires_after 28.days if session[:remember_me]
621
622     target = referer || session[:referer] || url_for(:controller => :site, :action => :index)
623
624     # The user is logged in, so decide where to send them:
625     #
626     # - If they haven't seen the contributor terms, send them there.
627     # - If they have a block on them, show them that.
628     # - If they were referred to the login, send them back there.
629     # - Otherwise, send them to the home page.
630     if REQUIRE_TERMS_SEEN && !user.terms_seen
631       redirect_to :action => :terms, :referer => target
632     elsif user.blocked_on_view
633       redirect_to user.blocked_on_view, :referer => target
634     else
635       redirect_to target
636     end
637
638     session.delete(:remember_me)
639     session.delete(:referer)
640   end
641
642   ##
643   # process a failed login
644   def failed_login(message, username = nil)
645     flash[:error] = message
646
647     redirect_to :action => "login", :referer => session[:referer],
648                 :username => username, :remember_me => session[:remember_me]
649
650     session.delete(:remember_me)
651     session.delete(:referer)
652   end
653
654   ##
655   #
656   def unconfirmed_login(user)
657     session[:token] = user.tokens.create.token
658
659     redirect_to :action => "confirm", :display_name => user.display_name
660
661     session.delete(:remember_me)
662     session.delete(:referer)
663   end
664
665   ##
666   # update a user's details
667   def update_user(user, params)
668     user.display_name = params[:user][:display_name]
669     user.new_email = params[:user][:new_email]
670
671     unless params[:user][:pass_crypt].empty? && params[:user][:pass_crypt_confirmation].empty?
672       user.pass_crypt = params[:user][:pass_crypt]
673       user.pass_crypt_confirmation = params[:user][:pass_crypt_confirmation]
674     end
675
676     if params[:user][:description] != user.description
677       user.description = params[:user][:description]
678       user.description_format = "markdown"
679     end
680
681     user.languages = params[:user][:languages].split(",")
682
683     case params[:image_action]
684     when "new" then
685       user.image = params[:user][:image]
686       user.image_use_gravatar = false
687     when "delete" then
688       user.image = nil
689       user.image_use_gravatar = false
690     when "gravatar" then
691       user.image = nil
692       user.image_use_gravatar = true
693     end
694
695     user.home_lat = params[:user][:home_lat]
696     user.home_lon = params[:user][:home_lon]
697
698     user.preferred_editor = if params[:user][:preferred_editor] == "default"
699                               nil
700                             else
701                               params[:user][:preferred_editor]
702                             end
703
704     if params[:user][:auth_provider].nil? || params[:user][:auth_provider].blank?
705       user.auth_provider = nil
706       user.auth_uid = nil
707     end
708
709     if user.save
710       set_locale
711
712       if user.new_email.blank? || user.new_email == user.email
713         flash.now[:notice] = t "user.account.flash update success"
714       else
715         user.email = user.new_email
716
717         if user.valid?
718           flash.now[:notice] = t "user.account.flash update success confirm needed"
719
720           begin
721             Notifier.email_confirm(user, user.tokens.create).deliver_now
722           rescue
723             # Ignore errors sending email
724           end
725         else
726           @user.errors.set(:new_email, @user.errors.get(:email))
727           @user.errors.set(:email, [])
728         end
729
730         user.restore_email!
731       end
732     end
733   end
734
735   ##
736   # require that the user is a administrator, or fill out a helpful error message
737   # and return them to the user page.
738   def require_administrator
739     if @user && !@user.administrator?
740       flash[:error] = t("user.filter.not_an_administrator")
741
742       if params[:display_name]
743         redirect_to :action => "view", :display_name => params[:display_name]
744       else
745         redirect_to :action => "login", :referer => request.fullpath
746       end
747     elsif !@user
748       redirect_to :action => "login", :referer => request.fullpath
749     end
750   end
751
752   ##
753   # require that the user in the URL is the logged in user
754   def require_self
755     if params[:display_name] != @user.display_name
756       render :text => "", :status => :forbidden
757     end
758   end
759
760   ##
761   # ensure that there is a "this_user" instance variable
762   def lookup_user_by_id
763     @this_user = User.find(params[:id])
764   end
765
766   ##
767   # ensure that there is a "this_user" instance variable
768   def lookup_user_by_name
769     @this_user = User.find_by(:display_name => params[:display_name])
770   rescue ActiveRecord::RecordNotFound
771     redirect_to :action => "view", :display_name => params[:display_name] unless @this_user
772   end
773
774   ##
775   #
776   def disable_terms_redirect
777     # this is necessary otherwise going to the user terms page, when
778     # having not agreed already would cause an infinite redirect loop.
779     # it's .now so that this doesn't propagate to other pages.
780     flash.now[:skip_terms] = true
781   end
782
783   ##
784   # return permitted user parameters
785   def user_params
786     params.require(:user).permit(:email, :email_confirmation, :display_name,
787                                  :auth_provider, :auth_uid,
788                                  :pass_crypt, :pass_crypt_confirmation)
789   end
790
791   ##
792   # check signup acls
793   def check_signup_allowed(email = nil)
794     domain = if email.nil?
795                nil
796              else
797                email.split("@").last
798              end
799
800     if blocked = Acl.no_account_creation(request.remote_ip, domain)
801       logger.info "Blocked signup from #{request.remote_ip} for #{email}"
802
803       render :action => "blocked"
804     end
805
806     !blocked
807   end
808
809   ##
810   # check if this user has a gravatar and set the user pref is true
811   def gravatar_enable(user)
812     # code from example https://en.gravatar.com/site/implement/images/ruby/
813     return false if user.image.present?
814     hash = Digest::MD5.hexdigest(user.email.downcase)
815     url = "https://www.gravatar.com/avatar/#{hash}?d=404" # without d=404 we will always get an image back
816     response = OSM.http_client.get(URI.parse(url))
817     oldsetting = user.image_use_gravatar
818     user.image_use_gravatar = response.success?
819     oldsetting != user.image_use_gravatar
820   end
821
822   ##
823   # display a message about th current status of the gravatar setting
824   def gravatar_status_message(user)
825     if user.image_use_gravatar
826       t "user.account.gravatar.enabled"
827     else
828       t "user.account.gravatar.disabled"
829     end
830   end
831 end