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