]> git.openstreetmap.org Git - rails.git/blob - app/controllers/user_controller.rb
Merge remote-tracking branch 'upstream/pull/1815'
[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   before_action :allow_thirdparty_images, :only => [:view, :account]
22
23   def terms
24     @legale = params[:legale] || OSM.ip_to_country(request.remote_ip) || DEFAULT_LEGALE
25     @text = OSM.legal_text_for_country(@legale)
26
27     if request.xhr?
28       render :partial => "terms"
29     else
30       @title = t "user.terms.title"
31
32       if current_user && current_user.terms_agreed?
33         # Already agreed to terms, so just show settings
34         redirect_to :action => :account, :display_name => current_user.display_name
35       elsif current_user.nil? && session[:new_user].nil?
36         redirect_to :action => :login, :referer => request.fullpath
37       end
38     end
39   end
40
41   def save
42     @title = t "user.new.title"
43
44     if params[:decline]
45       if current_user
46         current_user.terms_seen = true
47
48         flash[:notice] = t("user.new.terms declined", :url => t("user.new.terms declined url")).html_safe if current_user.save
49
50         if params[:referer]
51           redirect_to params[:referer]
52         else
53           redirect_to :action => :account, :display_name => current_user.display_name
54         end
55       else
56         redirect_to t("user.terms.declined")
57       end
58     elsif current_user
59       unless current_user.terms_agreed?
60         current_user.consider_pd = params[:user][:consider_pd]
61         current_user.terms_agreed = Time.now.getutc
62         current_user.terms_seen = true
63
64         flash[:notice] = t "user.new.terms accepted" if current_user.save
65       end
66
67       if params[:referer]
68         redirect_to params[:referer]
69       else
70         redirect_to :action => :account, :display_name => current_user.display_name
71       end
72     else
73       self.current_user = session.delete(:new_user)
74
75       if check_signup_allowed(current_user.email)
76         current_user.data_public = true
77         current_user.description = "" if current_user.description.nil?
78         current_user.creation_ip = request.remote_ip
79         current_user.languages = http_accept_language.user_preferred_languages
80         current_user.terms_agreed = Time.now.getutc
81         current_user.terms_seen = true
82
83         if current_user.auth_uid.blank?
84           current_user.auth_provider = nil
85           current_user.auth_uid = nil
86         end
87
88         if current_user.save
89           flash[:piwik_goal] = PIWIK["goals"]["signup"] if defined?(PIWIK)
90
91           referer = welcome_path
92
93           begin
94             uri = URI(session[:referer])
95             %r{map=(.*)/(.*)/(.*)}.match(uri.fragment) do |m|
96               editor = Rack::Utils.parse_query(uri.query).slice("editor")
97               referer = welcome_path({ "zoom" => m[1],
98                                        "lat" => m[2],
99                                        "lon" => m[3] }.merge(editor))
100             end
101           rescue StandardError
102             # Use default
103           end
104
105           if current_user.status == "active"
106             session[:referer] = referer
107             successful_login(current_user)
108           else
109             session[:token] = current_user.tokens.create.token
110             Notifier.signup_confirm(current_user, current_user.tokens.create(:referer => referer)).deliver_now
111             redirect_to :action => "confirm", :display_name => current_user.display_name
112           end
113         else
114           render :action => "new", :referer => params[:referer]
115         end
116       end
117     end
118   end
119
120   def account
121     @title = t "user.account.title"
122     @tokens = current_user.oauth_tokens.authorized
123
124     if params[:user] && params[:user][:display_name] && params[:user][:description]
125       if params[:user][:auth_provider].blank? ||
126          (params[:user][:auth_provider] == current_user.auth_provider &&
127           params[:user][:auth_uid] == current_user.auth_uid)
128         update_user(current_user, params)
129       else
130         session[:new_user_settings] = params
131         redirect_to auth_url(params[:user][:auth_provider], params[:user][:auth_uid])
132       end
133     elsif errors = session.delete(:user_errors)
134       errors.each do |attribute, error|
135         current_user.errors.add(attribute, error)
136       end
137     end
138   end
139
140   def go_public
141     current_user.data_public = true
142     current_user.save
143     flash[:notice] = t "user.go_public.flash success"
144     redirect_to :action => "account", :display_name => current_user.display_name
145   end
146
147   def lost_password
148     @title = t "user.lost_password.title"
149
150     if params[:user] && params[:user][:email]
151       user = User.visible.find_by(:email => params[:user][:email])
152
153       if user.nil?
154         users = User.visible.where("LOWER(email) = LOWER(?)", params[:user][:email])
155
156         user = users.first if users.count == 1
157       end
158
159       if user
160         token = user.tokens.create
161         Notifier.lost_password(user, token).deliver_now
162         flash[:notice] = t "user.lost_password.notice email on way"
163         redirect_to :action => "login"
164       else
165         flash.now[:error] = t "user.lost_password.notice email cannot find"
166       end
167     end
168   end
169
170   def reset_password
171     @title = t "user.reset_password.title"
172
173     if params[:token]
174       token = UserToken.find_by(:token => params[:token])
175
176       if token
177         self.current_user = token.user
178
179         if params[:user]
180           current_user.pass_crypt = params[:user][:pass_crypt]
181           current_user.pass_crypt_confirmation = params[:user][:pass_crypt_confirmation]
182           current_user.status = "active" if current_user.status == "pending"
183           current_user.email_valid = true
184
185           if current_user.save
186             token.destroy
187             flash[:notice] = t "user.reset_password.flash changed"
188             successful_login(current_user)
189           end
190         end
191       else
192         flash[:error] = t "user.reset_password.flash token bad"
193         redirect_to :action => "lost_password"
194       end
195     else
196       head :bad_request
197     end
198   end
199
200   def new
201     @title = t "user.new.title"
202     @referer = params[:referer] || session[:referer]
203
204     append_content_security_policy_directives(
205       :form_action => %w[accounts.google.com *.facebook.com login.live.com github.com meta.wikimedia.org]
206     )
207
208     if current_user
209       # The user is logged in already, so don't show them the signup
210       # page, instead send them to the home page
211       if @referer
212         redirect_to @referer
213       else
214         redirect_to :controller => "site", :action => "index"
215       end
216     elsif params.key?(:auth_provider) && params.key?(:auth_uid)
217       self.current_user = User.new(:email => params[:email],
218                                    :email_confirmation => params[:email],
219                                    :display_name => params[:nickname],
220                                    :auth_provider => params[:auth_provider],
221                                    :auth_uid => params[:auth_uid])
222
223       flash.now[:notice] = render_to_string :partial => "auth_association"
224     else
225       check_signup_allowed
226
227       self.current_user = User.new
228     end
229   end
230
231   def create
232     self.current_user = User.new(user_params)
233
234     if check_signup_allowed(current_user.email)
235       session[:referer] = params[:referer]
236
237       current_user.status = "pending"
238
239       if current_user.auth_provider.present? && current_user.pass_crypt.empty?
240         # We are creating an account with external authentication and
241         # no password was specified so create a random one
242         current_user.pass_crypt = SecureRandom.base64(16)
243         current_user.pass_crypt_confirmation = current_user.pass_crypt
244       end
245
246       if current_user.invalid?
247         # Something is wrong with a new user, so rerender the form
248         render :action => "new"
249       elsif current_user.auth_provider.present?
250         # Verify external authenticator before moving on
251         session[:new_user] = current_user
252         redirect_to auth_url(current_user.auth_provider, current_user.auth_uid)
253       else
254         # Save the user record
255         session[:new_user] = current_user
256         redirect_to :action => :terms
257       end
258     end
259   end
260
261   def login
262     session[:referer] = params[:referer] if params[:referer]
263
264     if params[:username].present? && params[:password].present?
265       session[:remember_me] ||= params[:remember_me]
266       password_authentication(params[:username], params[:password])
267     elsif params[:openid_url].present?
268       session[:remember_me] ||= params[:remember_me_openid]
269       redirect_to auth_url("openid", params[:openid_url], params[:referer])
270     end
271   end
272
273   def logout
274     @title = t "user.logout.title"
275
276     if params[:session] == session.id
277       if session[:token]
278         token = UserToken.find_by(:token => session[:token])
279         token.destroy if token
280         session.delete(:token)
281       end
282       session.delete(:user)
283       session_expires_automatically
284       if params[:referer]
285         redirect_to params[:referer]
286       else
287         redirect_to :controller => "site", :action => "index"
288       end
289     end
290   end
291
292   def confirm
293     if request.post?
294       token = UserToken.find_by(:token => params[:confirm_string])
295       if token && token.user.active?
296         flash[:error] = t("user.confirm.already active")
297         redirect_to :action => "login"
298       elsif !token || token.expired?
299         flash[:error] = t("user.confirm.unknown token")
300         redirect_to :action => "confirm"
301       else
302         user = token.user
303         user.status = "active"
304         user.email_valid = true
305         flash[:notice] = gravatar_status_message(user) if gravatar_enable(user)
306         user.save!
307         referer = token.referer
308         token.destroy
309
310         if session[:token]
311           token = UserToken.find_by(:token => session[:token])
312           session.delete(:token)
313         else
314           token = nil
315         end
316
317         if token.nil? || token.user != user
318           flash[:notice] = t("user.confirm.success")
319           redirect_to :action => :login, :referer => referer
320         else
321           token.destroy
322
323           session[:user] = user.id
324
325           redirect_to referer || welcome_path
326         end
327       end
328     else
329       user = User.find_by(:display_name => params[:display_name])
330
331       redirect_to root_path if user.nil? || user.active?
332     end
333   end
334
335   def confirm_resend
336     user = User.find_by(:display_name => params[:display_name])
337     token = UserToken.find_by(:token => session[:token])
338
339     if user.nil? || token.nil? || token.user != user
340       flash[:error] = t "user.confirm_resend.failure", :name => params[:display_name]
341     else
342       Notifier.signup_confirm(user, user.tokens.create).deliver_now
343       flash[:notice] = t("user.confirm_resend.success", :email => user.email, :sender => SUPPORT_EMAIL).html_safe
344     end
345
346     redirect_to :action => "login"
347   end
348
349   def confirm_email
350     if request.post?
351       token = UserToken.find_by(:token => params[:confirm_string])
352       if token && token.user.new_email?
353         self.current_user = token.user
354         current_user.email = current_user.new_email
355         current_user.new_email = nil
356         current_user.email_valid = true
357         gravatar_enabled = gravatar_enable(current_user)
358         if current_user.save
359           flash[:notice] = if gravatar_enabled
360                              t("user.confirm_email.success") + " " + gravatar_status_message(current_user)
361                            else
362                              t("user.confirm_email.success")
363                            end
364         else
365           flash[:errors] = current_user.errors
366         end
367         token.destroy
368         session[:user] = current_user.id
369         redirect_to :action => "account", :display_name => current_user.display_name
370       elsif token
371         flash[:error] = t "user.confirm_email.failure"
372         redirect_to :action => "account", :display_name => token.user.display_name
373       else
374         flash[:error] = t "user.confirm_email.unknown_token"
375       end
376     end
377   end
378
379   def api_read
380     if @user.visible?
381       render :action => :api_read, :content_type => "text/xml"
382     else
383       head :gone
384     end
385   end
386
387   def api_details
388     @user = current_user
389     render :action => :api_read, :content_type => "text/xml"
390   end
391
392   def api_gpx_files
393     doc = OSM::API.new.get_xml_doc
394     current_user.traces.reload.each do |trace|
395       doc.root << trace.to_xml_node
396     end
397     render :xml => doc.to_s
398   end
399
400   def view
401     @user = User.find_by(:display_name => params[:display_name])
402
403     if @user &&
404        (@user.visible? || (current_user && current_user.administrator?))
405       @title = @user.display_name
406     else
407       render_unknown_user params[:display_name]
408     end
409   end
410
411   def make_friend
412     @new_friend = User.find_by(:display_name => params[:display_name])
413
414     if @new_friend
415       if request.post?
416         friend = Friend.new
417         friend.befriender = current_user
418         friend.befriendee = @new_friend
419         if current_user.is_friends_with?(@new_friend)
420           flash[:warning] = t "user.make_friend.already_a_friend", :name => @new_friend.display_name
421         elsif friend.save
422           flash[:notice] = t "user.make_friend.success", :name => @new_friend.display_name
423           Notifier.friend_notification(friend).deliver_now
424         else
425           friend.add_error(t("user.make_friend.failed", :name => @new_friend.display_name))
426         end
427
428         if params[:referer]
429           redirect_to params[:referer]
430         else
431           redirect_to :action => "view"
432         end
433       end
434     else
435       render_unknown_user params[:display_name]
436     end
437   end
438
439   def remove_friend
440     @friend = User.find_by(:display_name => params[:display_name])
441
442     if @friend
443       if request.post?
444         if current_user.is_friends_with?(@friend)
445           Friend.where(:user_id => current_user.id, :friend_user_id => @friend.id).delete_all
446           flash[:notice] = t "user.remove_friend.success", :name => @friend.display_name
447         else
448           flash[:error] = t "user.remove_friend.not_a_friend", :name => @friend.display_name
449         end
450
451         if params[:referer]
452           redirect_to params[:referer]
453         else
454           redirect_to :action => "view"
455         end
456       end
457     else
458       render_unknown_user params[:display_name]
459     end
460   end
461
462   ##
463   # sets a user's status
464   def set_status
465     @user.status = params[:status]
466     @user.save
467     redirect_to :action => "view", :display_name => params[:display_name]
468   end
469
470   ##
471   # delete a user, marking them as deleted and removing personal data
472   def delete
473     @user.delete
474     redirect_to :action => "view", :display_name => params[:display_name]
475   end
476
477   ##
478   # display a list of users matching specified criteria
479   def list
480     if request.post?
481       ids = params[:user].keys.collect(&:to_i)
482
483       User.where(:id => ids).update_all(:status => "confirmed") if params[:confirm]
484       User.where(:id => ids).update_all(:status => "deleted") if params[:hide]
485
486       redirect_to url_for(:status => params[:status], :ip => params[:ip], :page => params[:page])
487     else
488       @params = params.permit(:status, :ip)
489
490       conditions = {}
491       conditions[:status] = @params[:status] if @params[:status]
492       conditions[:creation_ip] = @params[:ip] if @params[:ip]
493
494       @user_pages, @users = paginate(:users,
495                                      :conditions => conditions,
496                                      :order => :id,
497                                      :per_page => 50)
498     end
499   end
500
501   ##
502   # omniauth success callback
503   def auth_success
504     auth_info = request.env["omniauth.auth"]
505
506     provider = auth_info[:provider]
507     uid = auth_info[:uid]
508     name = auth_info[:info][:name]
509     email = auth_info[:info][:email]
510
511     case provider
512     when "openid"
513       email_verified = uid.match(%r{https://www.google.com/accounts/o8/id?(.*)}) ||
514                        uid.match(%r{https://me.yahoo.com/(.*)})
515     when "google", "facebook"
516       email_verified = true
517     else
518       email_verified = false
519     end
520
521     if settings = session.delete(:new_user_settings)
522       current_user.auth_provider = provider
523       current_user.auth_uid = uid
524
525       update_user(current_user, settings)
526
527       session[:user_errors] = current_user.errors.as_json
528
529       redirect_to :action => "account", :display_name => current_user.display_name
530     elsif session[:new_user]
531       session[:new_user].auth_provider = provider
532       session[:new_user].auth_uid = uid
533
534       session[:new_user].status = "active" if email_verified && email == session[:new_user].email
535
536       redirect_to :action => "terms"
537     else
538       user = User.find_by(:auth_provider => provider, :auth_uid => uid)
539
540       if user.nil? && provider == "google"
541         openid_url = auth_info[:extra][:id_info]["openid_id"]
542         user = User.find_by(:auth_provider => "openid", :auth_uid => openid_url) if openid_url
543         user.update(:auth_provider => provider, :auth_uid => uid) if user
544       end
545
546       if user
547         case user.status
548         when "pending" then
549           unconfirmed_login(user)
550         when "active", "confirmed" then
551           successful_login(user, request.env["omniauth.params"]["referer"])
552         when "suspended" then
553           failed_login t("user.login.account is suspended", :webmaster => "mailto:#{SUPPORT_EMAIL}").html_safe
554         else
555           failed_login t("user.login.auth failure")
556         end
557       else
558         redirect_to :action => "new", :nickname => name, :email => email,
559                     :auth_provider => provider, :auth_uid => uid
560       end
561     end
562   end
563
564   ##
565   # omniauth failure callback
566   def auth_failure
567     flash[:error] = t("user.auth_failure." + params[:message])
568     redirect_to params[:origin] || login_url
569   end
570
571   private
572
573   ##
574   # handle password authentication
575   def password_authentication(username, password)
576     if user = User.authenticate(:username => username, :password => password)
577       successful_login(user)
578     elsif user = User.authenticate(:username => username, :password => password, :pending => true)
579       unconfirmed_login(user)
580     elsif User.authenticate(:username => username, :password => password, :suspended => true)
581       failed_login t("user.login.account is suspended", :webmaster => "mailto:#{SUPPORT_EMAIL}").html_safe, username
582     else
583       failed_login t("user.login.auth failure"), username
584     end
585   end
586
587   ##
588   # return the URL to use for authentication
589   def auth_url(provider, uid, referer = nil)
590     params = { :provider => provider }
591
592     params[:openid_url] = openid_expand_url(uid) if provider == "openid"
593
594     if referer.nil?
595       params[:origin] = request.path
596     else
597       params[:origin] = request.path + "?referer=" + CGI.escape(referer)
598       params[:referer] = referer
599     end
600
601     auth_path(params)
602   end
603
604   ##
605   # special case some common OpenID providers by applying heuristics to
606   # try and come up with the correct URL based on what the user entered
607   def openid_expand_url(openid_url)
608     if openid_url.nil?
609       nil
610     elsif openid_url.match(%r{(.*)gmail.com(/?)$}) || openid_url.match(%r{(.*)googlemail.com(/?)$})
611       # Special case gmail.com as it is potentially a popular OpenID
612       # provider and, unlike yahoo.com, where it works automatically, Google
613       # have hidden their OpenID endpoint somewhere obscure this making it
614       # somewhat less user friendly.
615       "https://www.google.com/accounts/o8/id"
616     else
617       openid_url
618     end
619   end
620
621   ##
622   # process a successful login
623   def successful_login(user, referer = nil)
624     session[:user] = user.id
625     session_expires_after 28.days if session[:remember_me]
626
627     target = referer || session[:referer] || url_for(:controller => :site, :action => :index)
628
629     # The user is logged in, so decide where to send them:
630     #
631     # - If they haven't seen the contributor terms, send them there.
632     # - If they have a block on them, show them that.
633     # - If they were referred to the login, send them back there.
634     # - Otherwise, send them to the home page.
635     if REQUIRE_TERMS_SEEN && !user.terms_seen
636       redirect_to :action => :terms, :referer => target
637     elsif user.blocked_on_view
638       redirect_to user.blocked_on_view, :referer => target
639     else
640       redirect_to target
641     end
642
643     session.delete(:remember_me)
644     session.delete(:referer)
645   end
646
647   ##
648   # process a failed login
649   def failed_login(message, username = nil)
650     flash[:error] = message
651
652     redirect_to :action => "login", :referer => session[:referer],
653                 :username => username, :remember_me => session[:remember_me]
654
655     session.delete(:remember_me)
656     session.delete(:referer)
657   end
658
659   ##
660   #
661   def unconfirmed_login(user)
662     session[:token] = user.tokens.create.token
663
664     redirect_to :action => "confirm", :display_name => user.display_name
665
666     session.delete(:remember_me)
667     session.delete(:referer)
668   end
669
670   ##
671   # update a user's details
672   def update_user(user, params)
673     user.display_name = params[:user][:display_name]
674     user.new_email = params[:user][:new_email]
675
676     unless params[:user][:pass_crypt].empty? && params[:user][:pass_crypt_confirmation].empty?
677       user.pass_crypt = params[:user][:pass_crypt]
678       user.pass_crypt_confirmation = params[:user][:pass_crypt_confirmation]
679     end
680
681     if params[:user][:description] != user.description
682       user.description = params[:user][:description]
683       user.description_format = "markdown"
684     end
685
686     user.languages = params[:user][:languages].split(",")
687
688     case params[:image_action]
689     when "new" then
690       user.image = params[:user][:image]
691       user.image_use_gravatar = false
692     when "delete" then
693       user.image = nil
694       user.image_use_gravatar = false
695     when "gravatar" then
696       user.image = nil
697       user.image_use_gravatar = true
698     end
699
700     user.home_lat = params[:user][:home_lat]
701     user.home_lon = params[:user][:home_lon]
702
703     user.preferred_editor = if params[:user][:preferred_editor] == "default"
704                               nil
705                             else
706                               params[:user][:preferred_editor]
707                             end
708
709     if params[:user][:auth_provider].nil? || params[:user][:auth_provider].blank?
710       user.auth_provider = nil
711       user.auth_uid = nil
712     end
713
714     if user.save
715       set_locale
716
717       if user.new_email.blank? || user.new_email == user.email
718         flash.now[:notice] = t "user.account.flash update success"
719       else
720         user.email = user.new_email
721
722         if user.valid?
723           flash.now[:notice] = t "user.account.flash update success confirm needed"
724
725           begin
726             Notifier.email_confirm(user, user.tokens.create).deliver_now
727           rescue StandardError
728             # Ignore errors sending email
729           end
730         else
731           current_user.errors.add(:new_email, current_user.errors[:email])
732           current_user.errors.add(:email, [])
733         end
734
735         user.restore_email!
736       end
737     end
738   end
739
740   ##
741   # require that the user is a administrator, or fill out a helpful error message
742   # and return them to the user page.
743   def require_administrator
744     if current_user && !current_user.administrator?
745       flash[:error] = t("user.filter.not_an_administrator")
746
747       if params[:display_name]
748         redirect_to :action => "view", :display_name => params[:display_name]
749       else
750         redirect_to :action => "login", :referer => request.fullpath
751       end
752     elsif !current_user
753       redirect_to :action => "login", :referer => request.fullpath
754     end
755   end
756
757   ##
758   # require that the user in the URL is the logged in user
759   def require_self
760     head :forbidden if params[:display_name] != current_user.display_name
761   end
762
763   ##
764   # ensure that there is a "user" instance variable
765   def lookup_user_by_id
766     @user = User.find(params[:id])
767   end
768
769   ##
770   # ensure that there is a "user" instance variable
771   def lookup_user_by_name
772     @user = User.find_by(:display_name => params[:display_name])
773   rescue ActiveRecord::RecordNotFound
774     redirect_to :action => "view", :display_name => params[:display_name] unless @user
775   end
776
777   ##
778   #
779   def disable_terms_redirect
780     # this is necessary otherwise going to the user terms page, when
781     # having not agreed already would cause an infinite redirect loop.
782     # it's .now so that this doesn't propagate to other pages.
783     flash.now[:skip_terms] = true
784   end
785
786   ##
787   # return permitted user parameters
788   def user_params
789     params.require(:user).permit(:email, :email_confirmation, :display_name,
790                                  :auth_provider, :auth_uid,
791                                  :pass_crypt, :pass_crypt_confirmation)
792   end
793
794   ##
795   # check signup acls
796   def check_signup_allowed(email = nil)
797     domain = if email.nil?
798                nil
799              else
800                email.split("@").last
801              end
802
803     if blocked = Acl.no_account_creation(request.remote_ip, domain)
804       logger.info "Blocked signup from #{request.remote_ip} for #{email}"
805
806       render :action => "blocked"
807     end
808
809     !blocked
810   end
811
812   ##
813   # check if this user has a gravatar and set the user pref is true
814   def gravatar_enable(user)
815     # code from example https://en.gravatar.com/site/implement/images/ruby/
816     return false if user.image.present?
817     hash = Digest::MD5.hexdigest(user.email.downcase)
818     url = "https://www.gravatar.com/avatar/#{hash}?d=404" # without d=404 we will always get an image back
819     response = OSM.http_client.get(URI.parse(url))
820     oldsetting = user.image_use_gravatar
821     user.image_use_gravatar = response.success?
822     oldsetting != user.image_use_gravatar
823   end
824
825   ##
826   # display a message about th current status of the gravatar setting
827   def gravatar_status_message(user)
828     if user.image_use_gravatar
829       t "user.account.gravatar.enabled"
830     else
831       t "user.account.gravatar.disabled"
832     end
833   end
834 end