X-Git-Url: https://git.openstreetmap.org./rails.git/blobdiff_plain/1c6a83f0e83f7a97301edbe902ef8f5e501e3d0f..523291442766e7cd4adbad6d2bc7c6803cdd3811:/app/controllers/user_controller.rb

diff --git a/app/controllers/user_controller.rb b/app/controllers/user_controller.rb
index bd0c143c0..d853d4822 100644
--- a/app/controllers/user_controller.rb
+++ b/app/controllers/user_controller.rb
@@ -1,222 +1,836 @@
 class UserController < ApplicationController
-  layout 'site'
+  layout "site", :except => [:api_details]
 
-  before_filter :authorize, :only => [:api_details, :api_gpx_files]
-  before_filter :authorize_web, :only => [:account, :go_public, :view, :diary, :make_friend, :remove_friend, :upload_image]
-  before_filter :require_user, :only => [:set_home, :account, :go_public, :make_friend, :remove_friend, :upload_image]
+  skip_authorization_check :only => [:login, :logout]
 
-  filter_parameter_logging :password, :pass_crypt, :pass_crypt_confirmation
+  skip_before_action :verify_authenticity_token, :only => [:api_read, :api_details, :api_gpx_files, :auth_success]
+  before_action :disable_terms_redirect, :only => [:terms, :save, :logout, :api_details]
+  before_action :authorize, :only => [:api_details, :api_gpx_files]
+  before_action :authorize_web, :except => [:api_read, :api_details, :api_gpx_files]
+  before_action :set_locale, :except => [:api_read, :api_details, :api_gpx_files]
+  before_action :require_user, :only => [:account, :go_public, :make_friend, :remove_friend]
+  before_action :require_self, :only => [:account]
+  before_action :check_database_readable, :except => [:login, :api_read, :api_details, :api_gpx_files]
+  before_action :check_database_writable, :only => [:new, :account, :confirm, :confirm_email, :lost_password, :reset_password, :go_public, :make_friend, :remove_friend]
+  before_action :check_api_readable, :only => [:api_read, :api_details, :api_gpx_files]
+  before_action :require_allow_read_prefs, :only => [:api_details]
+  before_action :require_allow_read_gpx, :only => [:api_gpx_files]
+  before_action :require_cookies, :only => [:new, :login, :confirm]
+  before_action :require_administrator, :only => [:set_status, :delete, :list]
+  around_action :api_call_handle_error, :only => [:api_read, :api_details, :api_gpx_files]
+  before_action :lookup_user_by_id, :only => [:api_read]
+  before_action :lookup_user_by_name, :only => [:set_status, :delete]
+  before_action :allow_thirdparty_images, :only => [:view, :account]
 
-  def save
-    @title = 'create account'
-    @user = User.new(params[:user])
+  def terms
+    @legale = params[:legale] || OSM.ip_to_country(request.remote_ip) || DEFAULT_LEGALE
+    @text = OSM.legal_text_for_country(@legale)
 
-    if @user.save
-      token = @user.tokens.create
-      flash[:notice] = "User was successfully created. Check your email for a confirmation note, and you\'ll be mapping in no time :-)<br>Please note that you won't be able to login until you've received and confirmed your email address."
-      Notifier::deliver_signup_confirm(@user, token)
-      redirect_to :action => 'login'
+    if request.xhr?
+      render :partial => "terms"
     else
-      render :action => 'new'
+      @title = t "user.terms.title"
+
+      if current_user && current_user.terms_agreed?
+        # Already agreed to terms, so just show settings
+        redirect_to :action => :account, :display_name => current_user.display_name
+      elsif current_user.nil? && session[:new_user].nil?
+        redirect_to :action => :login, :referer => request.fullpath
+      end
     end
   end
 
-  def account
-    @title = 'edit account'
-    if params[:user] and params[:user][:display_name] and params[:user][:description]
-      home_lat =  params[:user][:home_lat]
-      home_lon =  params[:user][:home_lon]
-
-      @user.display_name = params[:user][:display_name]
-      if params[:user][:pass_crypt].length > 0 or params[:user][:pass_crypt_confirmation].length > 0
-        @user.pass_crypt = params[:user][:pass_crypt]
-        @user.pass_crypt_confirmation = params[:user][:pass_crypt_confirmation]
-      end
-      @user.description = params[:user][:description]
-      @user.home_lat = home_lat
-      @user.home_lon = home_lon
-      if @user.save
-        flash[:notice] = "User information updated successfully."
+  def save
+    @title = t "user.new.title"
+
+    if params[:decline]
+      if current_user
+        current_user.terms_seen = true
+
+        flash[:notice] = t("user.new.terms declined", :url => t("user.new.terms declined url")).html_safe if current_user.save
+
+        if params[:referer]
+          redirect_to params[:referer]
+        else
+          redirect_to :action => :account, :display_name => current_user.display_name
+        end
       else
-        flash.delete(:notice)
+        redirect_to t("user.terms.declined")
+      end
+    elsif current_user
+      unless current_user.terms_agreed?
+        current_user.consider_pd = params[:user][:consider_pd]
+        current_user.terms_agreed = Time.now.getutc
+        current_user.terms_seen = true
+
+        flash[:notice] = t "user.new.terms accepted" if current_user.save
+      end
+
+      if params[:referer]
+        redirect_to params[:referer]
+      else
+        redirect_to :action => :account, :display_name => current_user.display_name
+      end
+    else
+      self.current_user = session.delete(:new_user)
+
+      if check_signup_allowed(current_user.email)
+        current_user.data_public = true
+        current_user.description = "" if current_user.description.nil?
+        current_user.creation_ip = request.remote_ip
+        current_user.languages = http_accept_language.user_preferred_languages
+        current_user.terms_agreed = Time.now.getutc
+        current_user.terms_seen = true
+
+        if current_user.auth_uid.blank?
+          current_user.auth_provider = nil
+          current_user.auth_uid = nil
+        end
+
+        if current_user.save
+          flash[:piwik_goal] = PIWIK["goals"]["signup"] if defined?(PIWIK)
+
+          referer = welcome_path
+
+          begin
+            uri = URI(session[:referer])
+            %r{map=(.*)/(.*)/(.*)}.match(uri.fragment) do |m|
+              editor = Rack::Utils.parse_query(uri.query).slice("editor")
+              referer = welcome_path({ "zoom" => m[1],
+                                       "lat" => m[2],
+                                       "lon" => m[3] }.merge(editor))
+            end
+          rescue StandardError
+            # Use default
+          end
+
+          if current_user.status == "active"
+            session[:referer] = referer
+            successful_login(current_user)
+          else
+            session[:token] = current_user.tokens.create.token
+            Notifier.signup_confirm(current_user, current_user.tokens.create(:referer => referer)).deliver_now
+            redirect_to :action => "confirm", :display_name => current_user.display_name
+          end
+        else
+          render :action => "new", :referer => params[:referer]
+        end
       end
     end
   end
 
-  def set_home
-    if params[:user][:home_lat] and params[:user][:home_lon]
-      @user.home_lat = params[:user][:home_lat].to_f
-      @user.home_lon = params[:user][:home_lon].to_f
-      if @user.save
-        flash[:notice] = "Home location saved successfully."
-        redirect_to :controller => 'user', :action => 'account'
+  def account
+    @tokens = current_user.oauth_tokens.authorized
+
+    if params[:user] && params[:user][:display_name] && params[:user][:description]
+      if params[:user][:auth_provider].blank? ||
+         (params[:user][:auth_provider] == current_user.auth_provider &&
+          params[:user][:auth_uid] == current_user.auth_uid)
+        update_user(current_user, params)
+      else
+        session[:new_user_settings] = params
+        redirect_to auth_url(params[:user][:auth_provider], params[:user][:auth_uid])
+      end
+    elsif errors = session.delete(:user_errors)
+      errors.each do |attribute, error|
+        current_user.errors.add(attribute, error)
       end
     end
+    @title = t "user.account.title"
   end
 
   def go_public
-    @user.data_public = true
-    @user.save
-    flash[:notice] = 'All your edits are now public.'
-    redirect_to :controller => 'user', :action => 'account', :display_name => @user.display_name
+    current_user.data_public = true
+    current_user.save
+    flash[:notice] = t "user.go_public.flash success"
+    redirect_to :action => "account", :display_name => current_user.display_name
   end
 
   def lost_password
-    @title = 'lost password'
-    if params[:user] and params[:user][:email]
-      user = User.find_by_email(params[:user][:email])
+    @title = t "user.lost_password.title"
+
+    if params[:user] && params[:user][:email]
+      user = User.visible.find_by(:email => params[:user][:email])
+
+      if user.nil?
+        users = User.visible.where("LOWER(email) = LOWER(?)", params[:user][:email])
+
+        user = users.first if users.count == 1
+      end
+
       if user
         token = user.tokens.create
-        Notifier::deliver_lost_password(user, token)
-        flash[:notice] = "Sorry you lost it :-( but an email is on its way so you can reset it soon."
+        Notifier.lost_password(user, token).deliver_now
+        flash[:notice] = t "user.lost_password.notice email on way"
+        redirect_to :action => "login"
       else
-        flash[:notice] = "Couldn't find that email address, sorry."
+        flash.now[:error] = t "user.lost_password.notice email cannot find"
       end
-    else
-      render :action => 'lost_password'
     end
   end
 
   def reset_password
-    @title = 'reset password'
-    if params['token']
-      token = UserToken.find_by_token(params[:token])
+    @title = t "user.reset_password.title"
+
+    if params[:token]
+      token = UserToken.find_by(:token => params[:token])
+
       if token
-        pass = OSM::make_token(8)
-        user = token.user
-        user.pass_crypt = pass
-        user.pass_crypt_confirmation = pass
-        user.active = true
-        user.save!
-        token.destroy
-        Notifier::deliver_reset_password(user, pass)
-        flash[:notice] = "Your password has been changed and is on its way to your mailbox :-)"
+        self.current_user = token.user
+
+        if params[:user]
+          current_user.pass_crypt = params[:user][:pass_crypt]
+          current_user.pass_crypt_confirmation = params[:user][:pass_crypt_confirmation]
+          current_user.status = "active" if current_user.status == "pending"
+          current_user.email_valid = true
+
+          if current_user.save
+            token.destroy
+            flash[:notice] = t "user.reset_password.flash changed"
+            successful_login(current_user)
+          end
+        end
       else
-        flash[:notice] = "Didn't find that token, check the URL maybe?"
+        flash[:error] = t "user.reset_password.flash token bad"
+        redirect_to :action => "lost_password"
       end
+    else
+      head :bad_request
     end
-    redirect_to :action => 'login'
   end
 
   def new
-    @title = 'create account'
+    @title = t "user.new.title"
+    @referer = params[:referer] || session[:referer]
+
+    append_content_security_policy_directives(
+      :form_action => %w[accounts.google.com *.facebook.com login.live.com github.com meta.wikimedia.org]
+    )
+
+    if current_user
+      # The user is logged in already, so don't show them the signup
+      # page, instead send them to the home page
+      if @referer
+        redirect_to @referer
+      else
+        redirect_to :controller => "site", :action => "index"
+      end
+    elsif params.key?(:auth_provider) && params.key?(:auth_uid)
+      self.current_user = User.new(:email => params[:email],
+                                   :email_confirmation => params[:email],
+                                   :display_name => params[:nickname],
+                                   :auth_provider => params[:auth_provider],
+                                   :auth_uid => params[:auth_uid])
+
+      flash.now[:notice] = render_to_string :partial => "auth_association"
+    else
+      check_signup_allowed
+
+      self.current_user = User.new
+    end
   end
 
-  def login
-    @title = 'login'
-    if params[:user]
-      email_or_display_name = params[:user][:email]
-      pass = params[:user][:password]
-      user = User.authenticate(:username => email_or_display_name, :password => pass)
-      if user
-        session[:user] = user.id
-        if params[:referer]
-          redirect_to params[:referer]
-        else
-          redirect_to :controller => 'site', :action => 'index'
-        end
-        return
-      elsif User.authenticate(:username => email_or_display_name, :password => pass, :inactive => true)
-        flash[:notice] = "Sorry, your account is not active yet.<br>Please click on the link in the account confirmation email to activate your account."
+  def create
+    self.current_user = User.new(user_params)
+
+    if check_signup_allowed(current_user.email)
+      session[:referer] = params[:referer]
+
+      current_user.status = "pending"
+
+      if current_user.auth_provider.present? && current_user.pass_crypt.empty?
+        # We are creating an account with external authentication and
+        # no password was specified so create a random one
+        current_user.pass_crypt = SecureRandom.base64(16)
+        current_user.pass_crypt_confirmation = current_user.pass_crypt
+      end
+
+      if current_user.invalid?
+        # Something is wrong with a new user, so rerender the form
+        render :action => "new"
+      elsif current_user.auth_provider.present?
+        # Verify external authenticator before moving on
+        session[:new_user] = current_user
+        redirect_to auth_url(current_user.auth_provider, current_user.auth_uid)
       else
-        flash[:notice] = "Sorry, couldn't log in with those details."
+        # Save the user record
+        session[:new_user] = current_user
+        redirect_to :action => :terms
       end
     end
   end
 
+  def login
+    session[:referer] = params[:referer] if params[:referer]
+
+    if params[:username].present? && params[:password].present?
+      session[:remember_me] ||= params[:remember_me]
+      password_authentication(params[:username], params[:password])
+    elsif params[:openid_url].present?
+      session[:remember_me] ||= params[:remember_me_openid]
+      redirect_to auth_url("openid", params[:openid_url], params[:referer])
+    end
+  end
+
   def logout
-    if session[:token]
-      token = UserToken.find_by_token(session[:token])
-      if token
-        token.destroy
+    @title = t "user.logout.title"
+
+    if params[:session] == session.id
+      if session[:token]
+        token = UserToken.find_by(:token => session[:token])
+        token.destroy if token
+        session.delete(:token)
+      end
+      session.delete(:user)
+      session_expires_automatically
+      if params[:referer]
+        redirect_to params[:referer]
+      else
+        redirect_to :controller => "site", :action => "index"
       end
-      session[:token] = nil
     end
-    session[:user] = nil
-    if params[:referer]
-      redirect_to params[:referer]
+  end
+
+  def confirm
+    if request.post?
+      token = UserToken.find_by(:token => params[:confirm_string])
+      if token && token.user.active?
+        flash[:error] = t("user.confirm.already active")
+        redirect_to :action => "login"
+      elsif !token || token.expired?
+        flash[:error] = t("user.confirm.unknown token")
+        redirect_to :action => "confirm"
+      else
+        user = token.user
+        user.status = "active"
+        user.email_valid = true
+        flash[:notice] = gravatar_status_message(user) if gravatar_enable(user)
+        user.save!
+        referer = token.referer
+        token.destroy
+
+        if session[:token]
+          token = UserToken.find_by(:token => session[:token])
+          session.delete(:token)
+        else
+          token = nil
+        end
+
+        if token.nil? || token.user != user
+          flash[:notice] = t("user.confirm.success")
+          redirect_to :action => :login, :referer => referer
+        else
+          token.destroy
+
+          session[:user] = user.id
+
+          redirect_to referer || welcome_path
+        end
+      end
     else
-      redirect_to :controller => 'site', :action => 'index'
+      user = User.find_by(:display_name => params[:display_name])
+
+      redirect_to root_path if user.nil? || user.active?
     end
   end
 
-  def confirm
-    token = UserToken.find_by_token(params[:confirm_string])
-    if token and !token.user.active?
-      @user = token.user
-      @user.active = true
-      @user.save!
-      token.destroy
-      flash[:notice] = 'Confirmed your account, thanks for signing up!'
-      session[:user] = @user.id
-      redirect_to :action => 'account', :display_name => @user.display_name
+  def confirm_resend
+    user = User.find_by(:display_name => params[:display_name])
+    token = UserToken.find_by(:token => session[:token])
+
+    if user.nil? || token.nil? || token.user != user
+      flash[:error] = t "user.confirm_resend.failure", :name => params[:display_name]
     else
-      flash[:notice] = 'Something went wrong confirming that user.'
+      Notifier.signup_confirm(user, user.tokens.create).deliver_now
+      flash[:notice] = t("user.confirm_resend.success", :email => user.email, :sender => SUPPORT_EMAIL).html_safe
     end
+
+    redirect_to :action => "login"
   end
 
-  def upload_image
-    @user.image = params[:user][:image]
-    @user.save!
-    redirect_to :controller => 'user', :action => 'view', :display_name => @user.display_name
+  def confirm_email
+    if request.post?
+      token = UserToken.find_by(:token => params[:confirm_string])
+      if token && token.user.new_email?
+        self.current_user = token.user
+        current_user.email = current_user.new_email
+        current_user.new_email = nil
+        current_user.email_valid = true
+        gravatar_enabled = gravatar_enable(current_user)
+        if current_user.save
+          flash[:notice] = if gravatar_enabled
+                             t("user.confirm_email.success") + " " + gravatar_status_message(current_user)
+                           else
+                             t("user.confirm_email.success")
+                           end
+        else
+          flash[:errors] = current_user.errors
+        end
+        token.destroy
+        session[:user] = current_user.id
+        redirect_to :action => "account", :display_name => current_user.display_name
+      elsif token
+        flash[:error] = t "user.confirm_email.failure"
+        redirect_to :action => "account", :display_name => token.user.display_name
+      else
+        flash[:error] = t "user.confirm_email.unknown_token"
+      end
+    end
+  end
+
+  def api_read
+    if @user.visible?
+      render :action => :api_read, :content_type => "text/xml"
+    else
+      head :gone
+    end
   end
 
   def api_details
-    render :text => @user.to_xml.to_s, :content_type => "text/xml"
+    @user = current_user
+    render :action => :api_read, :content_type => "text/xml"
   end
 
   def api_gpx_files
     doc = OSM::API.new.get_xml_doc
-    @user.traces.each do |trace|
-      doc.root << trace.to_xml_node() if trace.public? or trace.user == @user
+    current_user.traces.reload.each do |trace|
+      doc.root << trace.to_xml_node
     end
-    render :text => doc.to_s, :content_type => "text/xml"
+    render :xml => doc.to_s
   end
 
   def view
-    @this_user = User.find_by_display_name(params[:display_name])
+    @user = User.find_by(:display_name => params[:display_name])
 
-    if @this_user
-      @title = @this_user.display_name
+    if @user &&
+       (@user.visible? || (current_user && current_user.administrator?))
+      @title = @user.display_name
     else
-      render :nothing => true, :status => :not_found
+      render_unknown_user params[:display_name]
     end
   end
 
   def make_friend
-    if params[:display_name]     
-      name = params[:display_name]
-      new_friend = User.find_by_display_name(name)
-      friend = Friend.new
-      friend.user_id = @user.id
-      friend.friend_user_id = new_friend.id
-      unless @user.is_friends_with?(new_friend)
-        if friend.save
-          flash[:notice] = "#{name} is now your friend."
-          Notifier::deliver_friend_notification(friend)
+    @new_friend = User.find_by(:display_name => params[:display_name])
+
+    if @new_friend
+      if request.post?
+        friend = Friend.new
+        friend.befriender = current_user
+        friend.befriendee = @new_friend
+        if current_user.is_friends_with?(@new_friend)
+          flash[:warning] = t "user.make_friend.already_a_friend", :name => @new_friend.display_name
+        elsif friend.save
+          flash[:notice] = t "user.make_friend.success", :name => @new_friend.display_name
+          Notifier.friend_notification(friend).deliver_now
         else
-          friend.add_error("Sorry, failed to add #{name} as a friend.")
+          friend.add_error(t("user.make_friend.failed", :name => @new_friend.display_name))
+        end
+
+        if params[:referer]
+          redirect_to params[:referer]
+        else
+          redirect_to :action => "view"
         end
-      else
-        flash[:notice] = "You are already friends with #{name}."  
       end
-      redirect_to :controller => 'user', :action => 'view'
+    else
+      render_unknown_user params[:display_name]
     end
   end
 
   def remove_friend
-    if params[:display_name]     
-      name = params[:display_name]
-      friend = User.find_by_display_name(name)
-      if @user.is_friends_with?(friend)
-        Friend.delete_all "user_id = #{@user.id} AND friend_user_id = #{friend.id}"
-        flash[:notice] = "#{friend.display_name} was removed from your friends."
+    @friend = User.find_by(:display_name => params[:display_name])
+
+    if @friend
+      if request.post?
+        if current_user.is_friends_with?(@friend)
+          Friend.where(:user_id => current_user.id, :friend_user_id => @friend.id).delete_all
+          flash[:notice] = t "user.remove_friend.success", :name => @friend.display_name
+        else
+          flash[:error] = t "user.remove_friend.not_a_friend", :name => @friend.display_name
+        end
+
+        if params[:referer]
+          redirect_to params[:referer]
+        else
+          redirect_to :action => "view"
+        end
+      end
+    else
+      render_unknown_user params[:display_name]
+    end
+  end
+
+  ##
+  # sets a user's status
+  def set_status
+    @user.status = params[:status]
+    @user.save
+    redirect_to :action => "view", :display_name => params[:display_name]
+  end
+
+  ##
+  # delete a user, marking them as deleted and removing personal data
+  def delete
+    @user.delete
+    redirect_to :action => "view", :display_name => params[:display_name]
+  end
+
+  ##
+  # display a list of users matching specified criteria
+  def list
+    if request.post?
+      ids = params[:user].keys.collect(&:to_i)
+
+      User.where(:id => ids).update_all(:status => "confirmed") if params[:confirm]
+      User.where(:id => ids).update_all(:status => "deleted") if params[:hide]
+
+      redirect_to url_for(:status => params[:status], :ip => params[:ip], :page => params[:page])
+    else
+      @params = params.permit(:status, :ip)
+
+      conditions = {}
+      conditions[:status] = @params[:status] if @params[:status]
+      conditions[:creation_ip] = @params[:ip] if @params[:ip]
+
+      @user_pages, @users = paginate(:users,
+                                     :conditions => conditions,
+                                     :order => :id,
+                                     :per_page => 50)
+    end
+  end
+
+  ##
+  # omniauth success callback
+  def auth_success
+    auth_info = request.env["omniauth.auth"]
+
+    provider = auth_info[:provider]
+    uid = auth_info[:uid]
+    name = auth_info[:info][:name]
+    email = auth_info[:info][:email]
+
+    case provider
+    when "openid"
+      email_verified = uid.match(%r{https://www.google.com/accounts/o8/id?(.*)}) ||
+                       uid.match(%r{https://me.yahoo.com/(.*)})
+    when "google", "facebook"
+      email_verified = true
+    else
+      email_verified = false
+    end
+
+    if settings = session.delete(:new_user_settings)
+      current_user.auth_provider = provider
+      current_user.auth_uid = uid
+
+      update_user(current_user, settings)
+
+      session[:user_errors] = current_user.errors.as_json
+
+      redirect_to :action => "account", :display_name => current_user.display_name
+    elsif session[:new_user]
+      session[:new_user].auth_provider = provider
+      session[:new_user].auth_uid = uid
+
+      session[:new_user].status = "active" if email_verified && email == session[:new_user].email
+
+      redirect_to :action => "terms"
+    else
+      user = User.find_by(:auth_provider => provider, :auth_uid => uid)
+
+      if user.nil? && provider == "google"
+        openid_url = auth_info[:extra][:id_info]["openid_id"]
+        user = User.find_by(:auth_provider => "openid", :auth_uid => openid_url) if openid_url
+        user.update(:auth_provider => provider, :auth_uid => uid) if user
+      end
+
+      if user
+        case user.status
+        when "pending" then
+          unconfirmed_login(user)
+        when "active", "confirmed" then
+          successful_login(user, request.env["omniauth.params"]["referer"])
+        when "suspended" then
+          failed_login t("user.login.account is suspended", :webmaster => "mailto:#{SUPPORT_EMAIL}").html_safe
+        else
+          failed_login t("user.login.auth failure")
+        end
       else
-        flash[:notice] = "#{friend.display_name} was not already one of your friends."
+        redirect_to :action => "new", :nickname => name, :email => email,
+                    :auth_provider => provider, :auth_uid => uid
       end
-      redirect_to :controller => 'user', :action => 'view'
     end
   end
 
-end
+  ##
+  # omniauth failure callback
+  def auth_failure
+    flash[:error] = t("user.auth_failure." + params[:message])
+    redirect_to params[:origin] || login_url
+  end
+
+  private
+
+  ##
+  # handle password authentication
+  def password_authentication(username, password)
+    if user = User.authenticate(:username => username, :password => password)
+      successful_login(user)
+    elsif user = User.authenticate(:username => username, :password => password, :pending => true)
+      unconfirmed_login(user)
+    elsif User.authenticate(:username => username, :password => password, :suspended => true)
+      failed_login t("user.login.account is suspended", :webmaster => "mailto:#{SUPPORT_EMAIL}").html_safe, username
+    else
+      failed_login t("user.login.auth failure"), username
+    end
+  end
+
+  ##
+  # return the URL to use for authentication
+  def auth_url(provider, uid, referer = nil)
+    params = { :provider => provider }
+
+    params[:openid_url] = openid_expand_url(uid) if provider == "openid"
 
+    if referer.nil?
+      params[:origin] = request.path
+    else
+      params[:origin] = request.path + "?referer=" + CGI.escape(referer)
+      params[:referer] = referer
+    end
+
+    auth_path(params)
+  end
+
+  ##
+  # special case some common OpenID providers by applying heuristics to
+  # try and come up with the correct URL based on what the user entered
+  def openid_expand_url(openid_url)
+    if openid_url.nil?
+      nil
+    elsif openid_url.match(%r{(.*)gmail.com(/?)$}) || openid_url.match(%r{(.*)googlemail.com(/?)$})
+      # Special case gmail.com as it is potentially a popular OpenID
+      # provider and, unlike yahoo.com, where it works automatically, Google
+      # have hidden their OpenID endpoint somewhere obscure this making it
+      # somewhat less user friendly.
+      "https://www.google.com/accounts/o8/id"
+    else
+      openid_url
+    end
+  end
+
+  ##
+  # process a successful login
+  def successful_login(user, referer = nil)
+    session[:user] = user.id
+    session_expires_after 28.days if session[:remember_me]
+
+    target = referer || session[:referer] || url_for(:controller => :site, :action => :index)
+
+    # The user is logged in, so decide where to send them:
+    #
+    # - If they haven't seen the contributor terms, send them there.
+    # - If they have a block on them, show them that.
+    # - If they were referred to the login, send them back there.
+    # - Otherwise, send them to the home page.
+    if REQUIRE_TERMS_SEEN && !user.terms_seen
+      redirect_to :action => :terms, :referer => target
+    elsif user.blocked_on_view
+      redirect_to user.blocked_on_view, :referer => target
+    else
+      redirect_to target
+    end
+
+    session.delete(:remember_me)
+    session.delete(:referer)
+  end
+
+  ##
+  # process a failed login
+  def failed_login(message, username = nil)
+    flash[:error] = message
+
+    redirect_to :action => "login", :referer => session[:referer],
+                :username => username, :remember_me => session[:remember_me]
+
+    session.delete(:remember_me)
+    session.delete(:referer)
+  end
+
+  ##
+  #
+  def unconfirmed_login(user)
+    session[:token] = user.tokens.create.token
+
+    redirect_to :action => "confirm", :display_name => user.display_name
+
+    session.delete(:remember_me)
+    session.delete(:referer)
+  end
+
+  ##
+  # update a user's details
+  def update_user(user, params)
+    user.display_name = params[:user][:display_name]
+    user.new_email = params[:user][:new_email]
+
+    unless params[:user][:pass_crypt].empty? && params[:user][:pass_crypt_confirmation].empty?
+      user.pass_crypt = params[:user][:pass_crypt]
+      user.pass_crypt_confirmation = params[:user][:pass_crypt_confirmation]
+    end
+
+    if params[:user][:description] != user.description
+      user.description = params[:user][:description]
+      user.description_format = "markdown"
+    end
+
+    user.languages = params[:user][:languages].split(",")
+
+    case params[:image_action]
+    when "new" then
+      user.image = params[:user][:image]
+      user.image_use_gravatar = false
+    when "delete" then
+      user.image = nil
+      user.image_use_gravatar = false
+    when "gravatar" then
+      user.image = nil
+      user.image_use_gravatar = true
+    end
+
+    user.home_lat = params[:user][:home_lat]
+    user.home_lon = params[:user][:home_lon]
+
+    user.preferred_editor = if params[:user][:preferred_editor] == "default"
+                              nil
+                            else
+                              params[:user][:preferred_editor]
+                            end
+
+    if params[:user][:auth_provider].nil? || params[:user][:auth_provider].blank?
+      user.auth_provider = nil
+      user.auth_uid = nil
+    end
+
+    if user.save
+      set_locale(true)
+
+      if user.new_email.blank? || user.new_email == user.email
+        flash.now[:notice] = t "user.account.flash update success"
+      else
+        user.email = user.new_email
+
+        if user.valid?
+          flash.now[:notice] = t "user.account.flash update success confirm needed"
+
+          begin
+            Notifier.email_confirm(user, user.tokens.create).deliver_now
+          rescue StandardError
+            # Ignore errors sending email
+          end
+        else
+          current_user.errors.add(:new_email, current_user.errors[:email])
+          current_user.errors.add(:email, [])
+        end
+
+        user.restore_email!
+      end
+    end
+  end
+
+  ##
+  # require that the user is a administrator, or fill out a helpful error message
+  # and return them to the user page.
+  def require_administrator
+    if current_user && !current_user.administrator?
+      flash[:error] = t("user.filter.not_an_administrator")
+
+      if params[:display_name]
+        redirect_to :action => "view", :display_name => params[:display_name]
+      else
+        redirect_to :action => "login", :referer => request.fullpath
+      end
+    elsif !current_user
+      redirect_to :action => "login", :referer => request.fullpath
+    end
+  end
+
+  ##
+  # require that the user in the URL is the logged in user
+  def require_self
+    head :forbidden if params[:display_name] != current_user.display_name
+  end
+
+  ##
+  # ensure that there is a "user" instance variable
+  def lookup_user_by_id
+    @user = User.find(params[:id])
+  end
+
+  ##
+  # ensure that there is a "user" instance variable
+  def lookup_user_by_name
+    @user = User.find_by(:display_name => params[:display_name])
+  rescue ActiveRecord::RecordNotFound
+    redirect_to :action => "view", :display_name => params[:display_name] unless @user
+  end
+
+  ##
+  #
+  def disable_terms_redirect
+    # this is necessary otherwise going to the user terms page, when
+    # having not agreed already would cause an infinite redirect loop.
+    # it's .now so that this doesn't propagate to other pages.
+    flash.now[:skip_terms] = true
+  end
+
+  ##
+  # return permitted user parameters
+  def user_params
+    params.require(:user).permit(:email, :email_confirmation, :display_name,
+                                 :auth_provider, :auth_uid,
+                                 :pass_crypt, :pass_crypt_confirmation)
+  end
+
+  ##
+  # check signup acls
+  def check_signup_allowed(email = nil)
+    domain = if email.nil?
+               nil
+             else
+               email.split("@").last
+             end
+
+    if blocked = Acl.no_account_creation(request.remote_ip, domain)
+      logger.info "Blocked signup from #{request.remote_ip} for #{email}"
+
+      render :action => "blocked"
+    end
+
+    !blocked
+  end
+
+  ##
+  # check if this user has a gravatar and set the user pref is true
+  def gravatar_enable(user)
+    # code from example https://en.gravatar.com/site/implement/images/ruby/
+    return false if user.image.present?
+    hash = Digest::MD5.hexdigest(user.email.downcase)
+    url = "https://www.gravatar.com/avatar/#{hash}?d=404" # without d=404 we will always get an image back
+    response = OSM.http_client.get(URI.parse(url))
+    oldsetting = user.image_use_gravatar
+    user.image_use_gravatar = response.success?
+    oldsetting != user.image_use_gravatar
+  end
+
+  ##
+  # display a message about th current status of the gravatar setting
+  def gravatar_status_message(user)
+    if user.image_use_gravatar
+      t "user.account.gravatar.enabled"
+    else
+      t "user.account.gravatar.disabled"
+    end
+  end
+end