app/controllers/users_controller.rb

   1 class UsersController < ApplicationController
   2   layout "site", :except => [:api_details]
   3
   4   skip_authorization_check :only => [:login, :logout]
   5
   6   skip_before_action :verify_authenticity_token, :only => [:api_read, :api_users, :api_details, :api_gpx_files, :auth_success]
   7   before_action :disable_terms_redirect, :only => [:terms, :save, :logout, :api_details]
   8   before_action :authorize, :only => [:api_details, :api_gpx_files]
   9   before_action :authorize_web, :except => [:api_read, :api_users, :api_details, :api_gpx_files]
  10   before_action :set_locale, :except => [:api_read, :api_users, :api_details, :api_gpx_files]
  11   before_action :require_user, :only => [:account, :go_public, :make_friend, :remove_friend]
  12   before_action :require_self, :only => [:account]
  13   before_action :check_database_readable, :except => [:login, :api_read, :api_users, :api_details, :api_gpx_files]
  14   before_action :check_database_writable, :only => [:new, :account, :confirm, :confirm_email, :lost_password, :reset_password, :go_public, :make_friend, :remove_friend]
  15   before_action :check_api_readable, :only => [:api_read, :api_users, :api_details, :api_gpx_files]
  16   before_action :require_allow_read_prefs, :only => [:api_details]
  17   before_action :require_allow_read_gpx, :only => [:api_gpx_files]
  18   before_action :require_cookies, :only => [:new, :login, :confirm]
  19   before_action :require_administrator, :only => [:set_status, :delete, :index]
  20   around_action :api_call_handle_error, :only => [:api_read, :api_users, :api_details, :api_gpx_files]
  21   before_action :lookup_user_by_id, :only => [:api_read]
  22   before_action :lookup_user_by_name, :only => [:set_status, :delete]
  23   before_action :allow_thirdparty_images, :only => [:show, :account]
  24
  25   def terms
  26     @legale = params[:legale] || OSM.ip_to_country(request.remote_ip) || DEFAULT_LEGALE
  27     @text = OSM.legal_text_for_country(@legale)
  28
  29     if request.xhr?
  30       render :partial => "terms"
  31     else
  32       @title = t "users.terms.title"
  33
  34       if current_user&.terms_agreed?
  35         # Already agreed to terms, so just show settings
  36         redirect_to :action => :account, :display_name => current_user.display_name
  37       elsif current_user.nil? && session[:new_user].nil?
  38         redirect_to :action => :login, :referer => request.fullpath
  39       end
  40     end
  41   end
  42
  43   def save
  44     @title = t "users.new.title"
  45
  46     if params[:decline]
  47       if current_user
  48         current_user.terms_seen = true
  49
  50         flash[:notice] = t("users.new.terms declined", :url => t("users.new.terms declined url")).html_safe if current_user.save
  51
  52         if params[:referer]
  53           redirect_to params[:referer]
  54         else
  55           redirect_to :action => :account, :display_name => current_user.display_name
  56         end
  57       else
  58         redirect_to t("users.terms.declined")
  59       end
  60     elsif current_user
  61       unless current_user.terms_agreed?
  62         current_user.consider_pd = params[:user][:consider_pd]
  63         current_user.terms_agreed = Time.now.getutc
  64         current_user.terms_seen = true
  65
  66         flash[:notice] = t "users.new.terms accepted" if current_user.save
  67       end
  68
  69       if params[:referer]
  70         redirect_to params[:referer]
  71       else
  72         redirect_to :action => :account, :display_name => current_user.display_name
  73       end
  74     else
  75       self.current_user = session.delete(:new_user)
  76
  77       if check_signup_allowed(current_user.email)
  78         current_user.data_public = true
  79         current_user.description = "" if current_user.description.nil?
  80         current_user.creation_ip = request.remote_ip
  81         current_user.languages = http_accept_language.user_preferred_languages
  82         current_user.terms_agreed = Time.now.getutc
  83         current_user.terms_seen = true
  84
  85         if current_user.auth_uid.blank?
  86           current_user.auth_provider = nil
  87           current_user.auth_uid = nil
  88         end
  89
  90         if current_user.save
  91           flash[:piwik_goal] = PIWIK["goals"]["signup"] if defined?(PIWIK)
  92
  93           referer = welcome_path
  94
  95           begin
  96             uri = URI(session[:referer])
  97             %r{map=(.*)/(.*)/(.*)}.match(uri.fragment) do |m|
  98               editor = Rack::Utils.parse_query(uri.query).slice("editor")
  99               referer = welcome_path({ "zoom" => m[1],
 100                                        "lat" => m[2],
 101                                        "lon" => m[3] }.merge(editor))
 102             end
 103           rescue StandardError
 104             # Use default
 105           end
 106
 107           if current_user.status == "active"
 108             session[:referer] = referer
 109             successful_login(current_user)
 110           else
 111             session[:token] = current_user.tokens.create.token
 112             Notifier.signup_confirm(current_user, current_user.tokens.create(:referer => referer)).deliver_now
 113             redirect_to :action => "confirm", :display_name => current_user.display_name
 114           end
 115         else
 116           render :action => "new", :referer => params[:referer]
 117         end
 118       end
 119     end
 120   end
 121
 122   def account
 123     @tokens = current_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] == current_user.auth_provider &&
 128           params[:user][:auth_uid] == current_user.auth_uid)
 129         update_user(current_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         current_user.errors.add(attribute, error)
 137       end
 138     end
 139     @title = t "users.account.title"
 140   end
 141
 142   def go_public
 143     current_user.data_public = true
 144     current_user.save
 145     flash[:notice] = t "users.go_public.flash success"
 146     redirect_to :action => "account", :display_name => current_user.display_name
 147   end
 148
 149   def lost_password
 150     @title = t "users.lost_password.title"
 151
 152     if params[:user] && params[:user][:email]
 153       user = User.visible.find_by(:email => params[:user][:email])
 154
 155       if user.nil?
 156         users = User.visible.where("LOWER(email) = LOWER(?)", params[:user][:email])
 157
 158         user = users.first if users.count == 1
 159       end
 160
 161       if user
 162         token = user.tokens.create
 163         Notifier.lost_password(user, token).deliver_now
 164         flash[:notice] = t "users.lost_password.notice email on way"
 165         redirect_to :action => "login"
 166       else
 167         flash.now[:error] = t "users.lost_password.notice email cannot find"
 168       end
 169     end
 170   end
 171
 172   def reset_password
 173     @title = t "users.reset_password.title"
 174
 175     if params[:token]
 176       token = UserToken.find_by(:token => params[:token])
 177
 178       if token
 179         self.current_user = token.user
 180
 181         if params[:user]
 182           current_user.pass_crypt = params[:user][:pass_crypt]
 183           current_user.pass_crypt_confirmation = params[:user][:pass_crypt_confirmation]
 184           current_user.status = "active" if current_user.status == "pending"
 185           current_user.email_valid = true
 186
 187           if current_user.save
 188             token.destroy
 189             flash[:notice] = t "users.reset_password.flash changed"
 190             successful_login(current_user)
 191           end
 192         end
 193       else
 194         flash[:error] = t "users.reset_password.flash token bad"
 195         redirect_to :action => "lost_password"
 196       end
 197     else
 198       head :bad_request
 199     end
 200   end
 201
 202   def new
 203     @title = t "users.new.title"
 204     @referer = params[:referer] || session[:referer]
 205
 206     append_content_security_policy_directives(
 207       :form_action => %w[accounts.google.com *.facebook.com login.live.com github.com meta.wikimedia.org]
 208     )
 209
 210     if current_user
 211       # The user is logged in already, so don't show them the signup
 212       # page, instead send them to the home page
 213       if @referer
 214         redirect_to @referer
 215       else
 216         redirect_to :controller => "site", :action => "index"
 217       end
 218     elsif params.key?(:auth_provider) && params.key?(:auth_uid)
 219       self.current_user = User.new(:email => params[:email],
 220                                    :email_confirmation => params[:email],
 221                                    :display_name => params[:nickname],
 222                                    :auth_provider => params[:auth_provider],
 223                                    :auth_uid => params[:auth_uid])
 224
 225       flash.now[:notice] = render_to_string :partial => "auth_association"
 226     else
 227       check_signup_allowed
 228
 229       self.current_user = User.new
 230     end
 231   end
 232
 233   def create
 234     self.current_user = User.new(user_params)
 235
 236     if check_signup_allowed(current_user.email)
 237       session[:referer] = params[:referer]
 238
 239       current_user.status = "pending"
 240
 241       if current_user.auth_provider.present? && current_user.pass_crypt.empty?
 242         # We are creating an account with external authentication and
 243         # no password was specified so create a random one
 244         current_user.pass_crypt = SecureRandom.base64(16)
 245         current_user.pass_crypt_confirmation = current_user.pass_crypt
 246       end
 247
 248       if current_user.invalid?
 249         # Something is wrong with a new user, so rerender the form
 250         render :action => "new"
 251       elsif current_user.auth_provider.present?
 252         # Verify external authenticator before moving on
 253         session[:new_user] = current_user
 254         redirect_to auth_url(current_user.auth_provider, current_user.auth_uid)
 255       else
 256         # Save the user record
 257         session[:new_user] = current_user
 258         redirect_to :action => :terms
 259       end
 260     end
 261   end
 262
 263   def login
 264     session[:referer] = params[:referer] if params[:referer]
 265
 266     if params[:username].present? && params[:password].present?
 267       session[:remember_me] ||= params[:remember_me]
 268       password_authentication(params[:username], params[:password])
 269     elsif params[:openid_url].present?
 270       session[:remember_me] ||= params[:remember_me_openid]
 271       redirect_to auth_url("openid", params[:openid_url], params[:referer])
 272     end
 273   end
 274
 275   def logout
 276     @title = t "users.logout.title"
 277
 278     if params[:session] == session.id
 279       if session[:token]
 280         token = UserToken.find_by(:token => session[:token])
 281         token&.destroy
 282         session.delete(:token)
 283       end
 284       session.delete(:user)
 285       session_expires_automatically
 286       if params[:referer]
 287         redirect_to params[:referer]
 288       else
 289         redirect_to :controller => "site", :action => "index"
 290       end
 291     end
 292   end
 293
 294   def confirm
 295     if request.post?
 296       token = UserToken.find_by(:token => params[:confirm_string])
 297       if token&.user&.active?
 298         flash[:error] = t("users.confirm.already active")
 299         redirect_to :action => "login"
 300       elsif !token || token.expired?
 301         flash[:error] = t("users.confirm.unknown token")
 302         redirect_to :action => "confirm"
 303       else
 304         user = token.user
 305         user.status = "active"
 306         user.email_valid = true
 307         flash[:notice] = gravatar_status_message(user) if gravatar_enable(user)
 308         user.save!
 309         referer = token.referer
 310         token.destroy
 311
 312         if session[:token]
 313           token = UserToken.find_by(:token => session[:token])
 314           session.delete(:token)
 315         else
 316           token = nil
 317         end
 318
 319         if token.nil? || token.user != user
 320           flash[:notice] = t("users.confirm.success")
 321           redirect_to :action => :login, :referer => referer
 322         else
 323           token.destroy
 324
 325           session[:user] = user.id
 326
 327           redirect_to referer || welcome_path
 328         end
 329       end
 330     else
 331       user = User.find_by(:display_name => params[:display_name])
 332
 333       redirect_to root_path if user.nil? || user.active?
 334     end
 335   end
 336
 337   def confirm_resend
 338     user = User.find_by(:display_name => params[:display_name])
 339     token = UserToken.find_by(:token => session[:token])
 340
 341     if user.nil? || token.nil? || token.user != user
 342       flash[:error] = t "users.confirm_resend.failure", :name => params[:display_name]
 343     else
 344       Notifier.signup_confirm(user, user.tokens.create).deliver_now
 345       flash[:notice] = t("users.confirm_resend.success", :email => user.email, :sender => SUPPORT_EMAIL).html_safe
 346     end
 347
 348     redirect_to :action => "login"
 349   end
 350
 351   def confirm_email
 352     if request.post?
 353       token = UserToken.find_by(:token => params[:confirm_string])
 354       if token&.user&.new_email?
 355         self.current_user = token.user
 356         current_user.email = current_user.new_email
 357         current_user.new_email = nil
 358         current_user.email_valid = true
 359         gravatar_enabled = gravatar_enable(current_user)
 360         if current_user.save
 361           flash[:notice] = if gravatar_enabled
 362                              t("users.confirm_email.success") + " " + gravatar_status_message(current_user)
 363                            else
 364                              t("users.confirm_email.success")
 365                            end
 366         else
 367           flash[:errors] = current_user.errors
 368         end
 369         token.destroy
 370         session[:user] = current_user.id
 371         redirect_to :action => "account", :display_name => current_user.display_name
 372       elsif token
 373         flash[:error] = t "users.confirm_email.failure"
 374         redirect_to :action => "account", :display_name => token.user.display_name
 375       else
 376         flash[:error] = t "users.confirm_email.unknown_token"
 377       end
 378     end
 379   end
 380
 381   def api_read
 382     if @user.visible?
 383       render :action => :api_read, :content_type => "text/xml"
 384     else
 385       head :gone
 386     end
 387   end
 388
 389   def api_details
 390     @user = current_user
 391     render :action => :api_read, :content_type => "text/xml"
 392   end
 393
 394   def api_users
 395     raise OSM::APIBadUserInput, "The parameter users is required, and must be of the form users=id[,id[,id...]]" unless params["users"]
 396
 397     ids = params["users"].split(",").collect(&:to_i)
 398
 399     raise OSM::APIBadUserInput, "No users were given to search for" if ids.empty?
 400
 401     @users = User.visible.find(ids)
 402
 403     render :action => :api_users, :content_type => "text/xml"
 404   end
 405
 406   def api_gpx_files
 407     doc = OSM::API.new.get_xml_doc
 408     current_user.traces.reload.each do |trace|
 409       doc.root << trace.to_xml_node
 410     end
 411     render :xml => doc.to_s
 412   end
 413
 414   def show
 415     @user = User.find_by(:display_name => params[:display_name])
 416
 417     if @user &&
 418        (@user.visible? || (current_user&.administrator?))
 419       @title = @user.display_name
 420     else
 421       render_unknown_user params[:display_name]
 422     end
 423   end
 424
 425   def make_friend
 426     @new_friend = User.find_by(:display_name => params[:display_name])
 427
 428     if @new_friend
 429       if request.post?
 430         friend = Friend.new
 431         friend.befriender = current_user
 432         friend.befriendee = @new_friend
 433         if current_user.is_friends_with?(@new_friend)
 434           flash[:warning] = t "users.make_friend.already_a_friend", :name => @new_friend.display_name
 435         elsif friend.save
 436           flash[:notice] = t "users.make_friend.success", :name => @new_friend.display_name
 437           Notifier.friend_notification(friend).deliver_now
 438         else
 439           friend.add_error(t("users.make_friend.failed", :name => @new_friend.display_name))
 440         end
 441
 442         if params[:referer]
 443           redirect_to params[:referer]
 444         else
 445           redirect_to :action => "show"
 446         end
 447       end
 448     else
 449       render_unknown_user params[:display_name]
 450     end
 451   end
 452
 453   def remove_friend
 454     @friend = User.find_by(:display_name => params[:display_name])
 455
 456     if @friend
 457       if request.post?
 458         if current_user.is_friends_with?(@friend)
 459           Friend.where(:user_id => current_user.id, :friend_user_id => @friend.id).delete_all
 460           flash[:notice] = t "users.remove_friend.success", :name => @friend.display_name
 461         else
 462           flash[:error] = t "users.remove_friend.not_a_friend", :name => @friend.display_name
 463         end
 464
 465         if params[:referer]
 466           redirect_to params[:referer]
 467         else
 468           redirect_to :action => "show"
 469         end
 470       end
 471     else
 472       render_unknown_user params[:display_name]
 473     end
 474   end
 475
 476   ##
 477   # sets a user's status
 478   def set_status
 479     @user.status = params[:status]
 480     @user.save
 481     redirect_to user_path(:display_name => params[:display_name])
 482   end
 483
 484   ##
 485   # delete a user, marking them as deleted and removing personal data
 486   def delete
 487     @user.delete
 488     redirect_to user_path(:display_name => params[:display_name])
 489   end
 490
 491   ##
 492   # display a list of users matching specified criteria
 493   def index
 494     if request.post?
 495       ids = params[:user].keys.collect(&:to_i)
 496
 497       User.where(:id => ids).update_all(:status => "confirmed") if params[:confirm]
 498       User.where(:id => ids).update_all(:status => "deleted") if params[:hide]
 499
 500       redirect_to url_for(:status => params[:status], :ip => params[:ip], :page => params[:page])
 501     else
 502       @params = params.permit(:status, :ip)
 503
 504       conditions = {}
 505       conditions[:status] = @params[:status] if @params[:status]
 506       conditions[:creation_ip] = @params[:ip] if @params[:ip]
 507
 508       @user_pages, @users = paginate(:users,
 509                                      :conditions => conditions,
 510                                      :order => :id,
 511                                      :per_page => 50)
 512     end
 513   end
 514
 515   ##
 516   # omniauth success callback
 517   def auth_success
 518     auth_info = request.env["omniauth.auth"]
 519
 520     provider = auth_info[:provider]
 521     uid = auth_info[:uid]
 522     name = auth_info[:info][:name]
 523     email = auth_info[:info][:email]
 524
 525     case provider
 526     when "openid"
 527       email_verified = uid.match(%r{https://www.google.com/accounts/o8/id?(.*)}) ||
 528                        uid.match(%r{https://me.yahoo.com/(.*)})
 529     when "google", "facebook"
 530       email_verified = true
 531     else
 532       email_verified = false
 533     end
 534
 535     if settings = session.delete(:new_user_settings)
 536       current_user.auth_provider = provider
 537       current_user.auth_uid = uid
 538
 539       update_user(current_user, settings)
 540
 541       session[:user_errors] = current_user.errors.as_json
 542
 543       redirect_to :action => "account", :display_name => current_user.display_name
 544     elsif session[:new_user]
 545       session[:new_user].auth_provider = provider
 546       session[:new_user].auth_uid = uid
 547
 548       session[:new_user].status = "active" if email_verified && email == session[:new_user].email
 549
 550       redirect_to :action => "terms"
 551     else
 552       user = User.find_by(:auth_provider => provider, :auth_uid => uid)
 553
 554       if user.nil? && provider == "google"
 555         openid_url = auth_info[:extra][:id_info]["openid_id"]
 556         user = User.find_by(:auth_provider => "openid", :auth_uid => openid_url) if openid_url
 557         user&.update(:auth_provider => provider, :auth_uid => uid)
 558       end
 559
 560       if user
 561         case user.status
 562         when "pending" then
 563           unconfirmed_login(user)
 564         when "active", "confirmed" then
 565           successful_login(user, request.env["omniauth.params"]["referer"])
 566         when "suspended" then
 567           failed_login t("users.login.account is suspended", :webmaster => "mailto:#{SUPPORT_EMAIL}").html_safe
 568         else
 569           failed_login t("users.login.auth failure")
 570         end
 571       else
 572         redirect_to :action => "new", :nickname => name, :email => email,
 573                     :auth_provider => provider, :auth_uid => uid
 574       end
 575     end
 576   end
 577
 578   ##
 579   # omniauth failure callback
 580   def auth_failure
 581     flash[:error] = t("users.auth_failure." + params[:message])
 582     redirect_to params[:origin] || login_url
 583   end
 584
 585   private
 586
 587   ##
 588   # handle password authentication
 589   def password_authentication(username, password)
 590     if user = User.authenticate(:username => username, :password => password)
 591       successful_login(user)
 592     elsif user = User.authenticate(:username => username, :password => password, :pending => true)
 593       unconfirmed_login(user)
 594     elsif User.authenticate(:username => username, :password => password, :suspended => true)
 595       failed_login t("users.login.account is suspended", :webmaster => "mailto:#{SUPPORT_EMAIL}").html_safe, username
 596     else
 597       failed_login t("users.login.auth failure"), username
 598     end
 599   end
 600
 601   ##
 602   # return the URL to use for authentication
 603   def auth_url(provider, uid, referer = nil)
 604     params = { :provider => provider }
 605
 606     params[:openid_url] = openid_expand_url(uid) if provider == "openid"
 607
 608     if referer.nil?
 609       params[:origin] = request.path
 610     else
 611       params[:origin] = request.path + "?referer=" + CGI.escape(referer)
 612       params[:referer] = referer
 613     end
 614
 615     auth_path(params)
 616   end
 617
 618   ##
 619   # special case some common OpenID providers by applying heuristics to
 620   # try and come up with the correct URL based on what the user entered
 621   def openid_expand_url(openid_url)
 622     if openid_url.nil?
 623       nil
 624     elsif openid_url.match(%r{(.*)gmail.com(/?)$}) || openid_url.match(%r{(.*)googlemail.com(/?)$})
 625       # Special case gmail.com as it is potentially a popular OpenID
 626       # provider and, unlike yahoo.com, where it works automatically, Google
 627       # have hidden their OpenID endpoint somewhere obscure this making it
 628       # somewhat less user friendly.
 629       "https://www.google.com/accounts/o8/id"
 630     else
 631       openid_url
 632     end
 633   end
 634
 635   ##
 636   # process a successful login
 637   def successful_login(user, referer = nil)
 638     session[:user] = user.id
 639     session_expires_after 28.days if session[:remember_me]
 640
 641     target = referer || session[:referer] || url_for(:controller => :site, :action => :index)
 642
 643     # The user is logged in, so decide where to send them:
 644     #
 645     # - If they haven't seen the contributor terms, send them there.
 646     # - If they have a block on them, show them that.
 647     # - If they were referred to the login, send them back there.
 648     # - Otherwise, send them to the home page.
 649     if REQUIRE_TERMS_SEEN && !user.terms_seen
 650       redirect_to :action => :terms, :referer => target
 651     elsif user.blocked_on_view
 652       redirect_to user.blocked_on_view, :referer => target
 653     else
 654       redirect_to target
 655     end
 656
 657     session.delete(:remember_me)
 658     session.delete(:referer)
 659   end
 660
 661   ##
 662   # process a failed login
 663   def failed_login(message, username = nil)
 664     flash[:error] = message
 665
 666     redirect_to :action => "login", :referer => session[:referer],
 667                 :username => username, :remember_me => session[:remember_me]
 668
 669     session.delete(:remember_me)
 670     session.delete(:referer)
 671   end
 672
 673   ##
 674   #
 675   def unconfirmed_login(user)
 676     session[:token] = user.tokens.create.token
 677
 678     redirect_to :action => "confirm", :display_name => user.display_name
 679
 680     session.delete(:remember_me)
 681     session.delete(:referer)
 682   end
 683
 684   ##
 685   # update a user's details
 686   def update_user(user, params)
 687     user.display_name = params[:user][:display_name]
 688     user.new_email = params[:user][:new_email]
 689
 690     unless params[:user][:pass_crypt].empty? && params[:user][:pass_crypt_confirmation].empty?
 691       user.pass_crypt = params[:user][:pass_crypt]
 692       user.pass_crypt_confirmation = params[:user][:pass_crypt_confirmation]
 693     end
 694
 695     if params[:user][:description] != user.description
 696       user.description = params[:user][:description]
 697       user.description_format = "markdown"
 698     end
 699
 700     user.languages = params[:user][:languages].split(",")
 701
 702     case params[:image_action]
 703     when "new" then
 704       user.image = params[:user][:image]
 705       user.image_use_gravatar = false
 706     when "delete" then
 707       user.image = nil
 708       user.image_use_gravatar = false
 709     when "gravatar" then
 710       user.image = nil
 711       user.image_use_gravatar = true
 712     end
 713
 714     user.home_lat = params[:user][:home_lat]
 715     user.home_lon = params[:user][:home_lon]
 716
 717     user.preferred_editor = if params[:user][:preferred_editor] == "default"
 718                               nil
 719                             else
 720                               params[:user][:preferred_editor]
 721                             end
 722
 723     if params[:user][:auth_provider].nil? || params[:user][:auth_provider].blank?
 724       user.auth_provider = nil
 725       user.auth_uid = nil
 726     end
 727
 728     if user.save
 729       set_locale(true)
 730
 731       if user.new_email.blank? || user.new_email == user.email
 732         flash.now[:notice] = t "users.account.flash update success"
 733       else
 734         user.email = user.new_email
 735
 736         if user.valid?
 737           flash.now[:notice] = t "users.account.flash update success confirm needed"
 738
 739           begin
 740             Notifier.email_confirm(user, user.tokens.create).deliver_now
 741           rescue StandardError
 742             # Ignore errors sending email
 743           end
 744         else
 745           current_user.errors.add(:new_email, current_user.errors[:email])
 746           current_user.errors.add(:email, [])
 747         end
 748
 749         user.restore_email!
 750       end
 751     end
 752   end
 753
 754   ##
 755   # require that the user is a administrator, or fill out a helpful error message
 756   # and return them to the user page.
 757   def require_administrator
 758     if current_user && !current_user.administrator?
 759       flash[:error] = t("users.filter.not_an_administrator")
 760
 761       if params[:display_name]
 762         redirect_to user_path(:display_name => params[:display_name])
 763       else
 764         redirect_to :action => "login", :referer => request.fullpath
 765       end
 766     elsif !current_user
 767       redirect_to :action => "login", :referer => request.fullpath
 768     end
 769   end
 770
 771   ##
 772   # require that the user in the URL is the logged in user
 773   def require_self
 774     head :forbidden if params[:display_name] != current_user.display_name
 775   end
 776
 777   ##
 778   # ensure that there is a "user" instance variable
 779   def lookup_user_by_id
 780     @user = User.find(params[:id])
 781   end
 782
 783   ##
 784   # ensure that there is a "user" instance variable
 785   def lookup_user_by_name
 786     @user = User.find_by(:display_name => params[:display_name])
 787   rescue ActiveRecord::RecordNotFound
 788     redirect_to :action => "view", :display_name => params[:display_name] unless @user
 789   end
 790
 791   ##
 792   #
 793   def disable_terms_redirect
 794     # this is necessary otherwise going to the user terms page, when
 795     # having not agreed already would cause an infinite redirect loop.
 796     # it's .now so that this doesn't propagate to other pages.
 797     flash.now[:skip_terms] = true
 798   end
 799
 800   ##
 801   # return permitted user parameters
 802   def user_params
 803     params.require(:user).permit(:email, :email_confirmation, :display_name,
 804                                  :auth_provider, :auth_uid,
 805                                  :pass_crypt, :pass_crypt_confirmation)
 806   end
 807
 808   ##
 809   # check signup acls
 810   def check_signup_allowed(email = nil)
 811     domain = if email.nil?
 812                nil
 813              else
 814                email.split("@").last
 815              end
 816
 817     if blocked = Acl.no_account_creation(request.remote_ip, domain)
 818       logger.info "Blocked signup from #{request.remote_ip} for #{email}"
 819
 820       render :action => "blocked"
 821     end
 822
 823     !blocked
 824   end
 825
 826   ##
 827   # check if this user has a gravatar and set the user pref is true
 828   def gravatar_enable(user)
 829     # code from example https://en.gravatar.com/site/implement/images/ruby/
 830     return false if user.image.present?
 831
 832     hash = Digest::MD5.hexdigest(user.email.downcase)
 833     url = "https://www.gravatar.com/avatar/#{hash}?d=404" # without d=404 we will always get an image back
 834     response = OSM.http_client.get(URI.parse(url))
 835     oldsetting = user.image_use_gravatar
 836     user.image_use_gravatar = response.success?
 837     oldsetting != user.image_use_gravatar
 838   end
 839
 840   ##
 841   # display a message about th current status of the gravatar setting
 842   def gravatar_status_message(user)
 843     if user.image_use_gravatar
 844       t "users.account.gravatar.enabled"
 845     else
 846       t "users.account.gravatar.disabled"
 847     end
 848   end
 849 end