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         if current_user.save
  49           flash[:notice] = t("user.new.terms declined", :url => t("user.new.terms declined url")).html_safe
  50         end
  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("user.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 "user.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     @title = t "user.account.title"
 124     @tokens = current_user.oauth_tokens.authorized
 125
 126     if params[:user] && params[:user][:display_name] && params[:user][:description]
 127       if params[:user][:auth_provider].blank? ||
 128          (params[:user][:auth_provider] == current_user.auth_provider &&
 129           params[:user][:auth_uid] == current_user.auth_uid)
 130         update_user(current_user, params)
 131       else
 132         session[:new_user_settings] = params
 133         redirect_to auth_url(params[:user][:auth_provider], params[:user][:auth_uid])
 134       end
 135     elsif errors = session.delete(:user_errors)
 136       errors.each do |attribute, error|
 137         current_user.errors.add(attribute, error)
 138       end
 139     end
 140   end
 141
 142   def go_public
 143     current_user.data_public = true
 144     current_user.save
 145     flash[:notice] = t "user.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 "user.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 "user.lost_password.notice email on way"
 165         redirect_to :action => "login"
 166       else
 167         flash.now[:error] = t "user.lost_password.notice email cannot find"
 168       end
 169     end
 170   end
 171
 172   def reset_password
 173     @title = t "user.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 "user.reset_password.flash changed"
 190             successful_login(current_user)
 191           end
 192         end
 193       else
 194         flash[:error] = t "user.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 "user.new.title"
 204     @referer = params[:referer] || session[:referer]
 205
 206     if current_user
 207       # The user is logged in already, so don't show them the signup
 208       # page, instead send them to the home page
 209       if @referer
 210         redirect_to @referer
 211       else
 212         redirect_to :controller => "site", :action => "index"
 213       end
 214     elsif params.key?(:auth_provider) && params.key?(:auth_uid)
 215       self.current_user = User.new(:email => params[:email],
 216                                    :email_confirmation => params[:email],
 217                                    :display_name => params[:nickname],
 218                                    :auth_provider => params[:auth_provider],
 219                                    :auth_uid => params[:auth_uid])
 220
 221       flash.now[:notice] = render_to_string :partial => "auth_association"
 222     else
 223       check_signup_allowed
 224
 225       self.current_user = User.new
 226     end
 227   end
 228
 229   def create
 230     self.current_user = User.new(user_params)
 231
 232     if check_signup_allowed(current_user.email)
 233       session[:referer] = params[:referer]
 234
 235       current_user.status = "pending"
 236
 237       if current_user.auth_provider.present? && current_user.pass_crypt.empty?
 238         # We are creating an account with external authentication and
 239         # no password was specified so create a random one
 240         current_user.pass_crypt = SecureRandom.base64(16)
 241         current_user.pass_crypt_confirmation = current_user.pass_crypt
 242       end
 243
 244       if current_user.invalid?
 245         # Something is wrong with a new user, so rerender the form
 246         render :action => "new"
 247       elsif current_user.auth_provider.present?
 248         # Verify external authenticator before moving on
 249         session[:new_user] = current_user
 250         redirect_to auth_url(current_user.auth_provider, current_user.auth_uid)
 251       else
 252         # Save the user record
 253         session[:new_user] = current_user
 254         redirect_to :action => :terms
 255       end
 256     end
 257   end
 258
 259   def login
 260     session[:referer] = params[:referer] if params[:referer]
 261
 262     if params[:username].present? && params[:password].present?
 263       session[:remember_me] ||= params[:remember_me]
 264       password_authentication(params[:username], params[:password])
 265     elsif params[:openid_url].present?
 266       session[:remember_me] ||= params[:remember_me_openid]
 267       redirect_to auth_url("openid", params[:openid_url], params[:referer])
 268     end
 269   end
 270
 271   def logout
 272     @title = t "user.logout.title"
 273
 274     if params[:session] == session.id
 275       if session[:token]
 276         token = UserToken.find_by(:token => session[:token])
 277         token.destroy if token
 278         session.delete(:token)
 279       end
 280       session.delete(:user)
 281       session_expires_automatically
 282       if params[:referer]
 283         redirect_to params[:referer]
 284       else
 285         redirect_to :controller => "site", :action => "index"
 286       end
 287     end
 288   end
 289
 290   def confirm
 291     if request.post?
 292       token = UserToken.find_by(:token => params[:confirm_string])
 293       if token && token.user.active?
 294         flash[:error] = t("user.confirm.already active")
 295         redirect_to :action => "login"
 296       elsif !token || token.expired?
 297         flash[:error] = t("user.confirm.unknown token")
 298         redirect_to :action => "confirm"
 299       else
 300         user = token.user
 301         user.status = "active"
 302         user.email_valid = true
 303         flash[:notice] = gravatar_status_message(user) if gravatar_enable(user)
 304         user.save!
 305         referer = token.referer
 306         token.destroy
 307
 308         if session[:token]
 309           token = UserToken.find_by(:token => session[:token])
 310           session.delete(:token)
 311         else
 312           token = nil
 313         end
 314
 315         if token.nil? || token.user != user
 316           flash[:notice] = t("user.confirm.success")
 317           redirect_to :action => :login, :referer => referer
 318         else
 319           token.destroy
 320
 321           session[:user] = user.id
 322
 323           redirect_to referer || welcome_path
 324         end
 325       end
 326     else
 327       user = User.find_by(:display_name => params[:display_name])
 328
 329       redirect_to root_path if user.nil? || user.active?
 330     end
 331   end
 332
 333   def confirm_resend
 334     user = User.find_by(:display_name => params[:display_name])
 335     token = UserToken.find_by(:token => session[:token])
 336
 337     if user.nil? || token.nil? || token.user != user
 338       flash[:error] = t "user.confirm_resend.failure", :name => params[:display_name]
 339     else
 340       Notifier.signup_confirm(user, user.tokens.create).deliver_now
 341       flash[:notice] = t("user.confirm_resend.success", :email => user.email, :sender => SUPPORT_EMAIL).html_safe
 342     end
 343
 344     redirect_to :action => "login"
 345   end
 346
 347   def confirm_email
 348     if request.post?
 349       token = UserToken.find_by(:token => params[:confirm_string])
 350       if token && token.user.new_email?
 351         self.current_user = token.user
 352         current_user.email = current_user.new_email
 353         current_user.new_email = nil
 354         current_user.email_valid = true
 355         gravatar_enabled = gravatar_enable(current_user)
 356         if current_user.save
 357           flash[:notice] = if gravatar_enabled
 358                              t("user.confirm_email.success") + " " + gravatar_status_message(current_user)
 359                            else
 360                              t("user.confirm_email.success")
 361                            end
 362         else
 363           flash[:errors] = current_user.errors
 364         end
 365         token.destroy
 366         session[:user] = current_user.id
 367         redirect_to :action => "account", :display_name => current_user.display_name
 368       elsif token
 369         flash[:error] = t "user.confirm_email.failure"
 370         redirect_to :action => "account", :display_name => token.user.display_name
 371       else
 372         flash[:error] = t "user.confirm_email.unknown_token"
 373       end
 374     end
 375   end
 376
 377   def api_read
 378     if @this_user.visible?
 379       render :action => :api_read, :content_type => "text/xml"
 380     else
 381       head :gone
 382     end
 383   end
 384
 385   def api_details
 386     @this_user = current_user
 387     render :action => :api_read, :content_type => "text/xml"
 388   end
 389
 390   def api_gpx_files
 391     doc = OSM::API.new.get_xml_doc
 392     current_user.traces.reload.each do |trace|
 393       doc.root << trace.to_xml_node
 394     end
 395     render :xml => doc.to_s
 396   end
 397
 398   def view
 399     @this_user = User.find_by(:display_name => params[:display_name])
 400
 401     if @this_user &&
 402        (@this_user.visible? || (current_user && current_user.administrator?))
 403       @title = @this_user.display_name
 404     else
 405       render_unknown_user params[:display_name]
 406     end
 407   end
 408
 409   def make_friend
 410     @new_friend = User.find_by(:display_name => params[:display_name])
 411
 412     if @new_friend
 413       if request.post?
 414         friend = Friend.new
 415         friend.befriender = current_user
 416         friend.befriendee = @new_friend
 417         if current_user.is_friends_with?(@new_friend)
 418           flash[:warning] = t "user.make_friend.already_a_friend", :name => @new_friend.display_name
 419         elsif friend.save
 420           flash[:notice] = t "user.make_friend.success", :name => @new_friend.display_name
 421           Notifier.friend_notification(friend).deliver_now
 422         else
 423           friend.add_error(t("user.make_friend.failed", :name => @new_friend.display_name))
 424         end
 425
 426         if params[:referer]
 427           redirect_to params[:referer]
 428         else
 429           redirect_to :action => "view"
 430         end
 431       end
 432     else
 433       render_unknown_user params[:display_name]
 434     end
 435   end
 436
 437   def remove_friend
 438     @friend = User.find_by(:display_name => params[:display_name])
 439
 440     if @friend
 441       if request.post?
 442         if current_user.is_friends_with?(@friend)
 443           Friend.where(:user_id => current_user.id, :friend_user_id => @friend.id).delete_all
 444           flash[:notice] = t "user.remove_friend.success", :name => @friend.display_name
 445         else
 446           flash[:error] = t "user.remove_friend.not_a_friend", :name => @friend.display_name
 447         end
 448
 449         if params[:referer]
 450           redirect_to params[:referer]
 451         else
 452           redirect_to :action => "view"
 453         end
 454       end
 455     else
 456       render_unknown_user params[:display_name]
 457     end
 458   end
 459
 460   ##
 461   # sets a user's status
 462   def set_status
 463     @this_user.status = params[:status]
 464     @this_user.save
 465     redirect_to :action => "view", :display_name => params[:display_name]
 466   end
 467
 468   ##
 469   # delete a user, marking them as deleted and removing personal data
 470   def delete
 471     @this_user.delete
 472     redirect_to :action => "view", :display_name => params[:display_name]
 473   end
 474
 475   ##
 476   # display a list of users matching specified criteria
 477   def list
 478     if request.post?
 479       ids = params[:user].keys.collect(&:to_i)
 480
 481       User.where(:id => ids).update_all(:status => "confirmed") if params[:confirm]
 482       User.where(:id => ids).update_all(:status => "deleted") if params[:hide]
 483
 484       redirect_to url_for(:status => params[:status], :ip => params[:ip], :page => params[:page])
 485     else
 486       @params = params.permit(:status, :ip)
 487
 488       conditions = {}
 489       conditions[:status] = @params[:status] if @params[:status]
 490       conditions[:creation_ip] = @params[:ip] if @params[:ip]
 491
 492       @user_pages, @users = paginate(:users,
 493                                      :conditions => conditions,
 494                                      :order => :id,
 495                                      :per_page => 50)
 496     end
 497   end
 498
 499   ##
 500   # omniauth success callback
 501   def auth_success
 502     auth_info = request.env["omniauth.auth"]
 503
 504     provider = auth_info[:provider]
 505     uid = auth_info[:uid]
 506     name = auth_info[:info][:name]
 507     email = auth_info[:info][:email]
 508
 509     case provider
 510     when "openid"
 511       email_verified = uid.match(%r{https://www.google.com/accounts/o8/id?(.*)}) ||
 512                        uid.match(%r{https://me.yahoo.com/(.*)})
 513     when "google", "facebook"
 514       email_verified = true
 515     else
 516       email_verified = false
 517     end
 518
 519     if settings = session.delete(:new_user_settings)
 520       current_user.auth_provider = provider
 521       current_user.auth_uid = uid
 522
 523       update_user(current_user, settings)
 524
 525       session[:user_errors] = current_user.errors.as_json
 526
 527       redirect_to :action => "account", :display_name => current_user.display_name
 528     elsif session[:new_user]
 529       session[:new_user].auth_provider = provider
 530       session[:new_user].auth_uid = uid
 531
 532       if email_verified && email == session[:new_user].email
 533         session[:new_user].status = "active"
 534       end
 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 "this_user" instance variable
 765   def lookup_user_by_id
 766     @this_user = User.find(params[:id])
 767   end
 768
 769   ##
 770   # ensure that there is a "this_user" instance variable
 771   def lookup_user_by_name
 772     @this_user = User.find_by(:display_name => params[:display_name])
 773   rescue ActiveRecord::RecordNotFound
 774     redirect_to :action => "view", :display_name => params[:display_name] unless @this_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