app/controllers/users_controller.rb

   1 # frozen_string_literal: true
   2
   3 class UsersController < ApplicationController
   4   include EmailMethods
   5   include SessionMethods
   6   include UserMethods
   7
   8   layout :site_layout
   9
  10   skip_before_action :verify_authenticity_token, :only => [:auth_success]
  11   before_action :authorize_web
  12   before_action :set_locale
  13   before_action :check_database_readable
  14
  15   authorize_resource
  16
  17   before_action :check_database_writable, :only => [:new, :go_public]
  18   before_action :require_cookies, :only => [:new]
  19
  20   allow_thirdparty_images :only => :show
  21   allow_social_login :only => :new
  22
  23   content_security_policy(:only => [:new, :create]) do |policy|
  24     if Settings.turnstile_site_key
  25       policy.frame_src(*policy.frame_src, "challenges.cloudflare.com")
  26       policy.script_src(*policy.script_src, "challenges.cloudflare.com")
  27     end
  28   end
  29
  30   def show
  31     @user = User.find_by(:display_name => params[:display_name])
  32
  33     if @user && (@user.visible? || current_user&.administrator?)
  34       @title = @user.display_name
  35       @heatmap_frame = @user.public_heatmap?
  36     else
  37       render_unknown_user params[:display_name]
  38     end
  39   end
  40
  41   def new
  42     @title = t ".title"
  43     @referer = safe_referer(params[:referer])
  44
  45     parse_oauth_referer @referer
  46
  47     if current_user
  48       # The user is logged in already, so don't show them the signup
  49       # page, instead send them to the home page
  50       redirect_to @referer || { :controller => "site", :action => "index" }
  51     elsif params.key?(:auth_provider) && params.key?(:auth_uid)
  52       @email_hmac = params[:email_hmac]
  53
  54       @user = User.new(
  55         :email => params[:email],
  56         :display_name => params[:nickname],
  57         :auth_provider => params[:auth_provider],
  58         :auth_uid => params[:auth_uid]
  59       )
  60
  61       if @user.valid? || @user.errors[:email].empty?
  62         flash.now[:notice] = render_to_string :partial => "auth_association"
  63       else
  64         flash.now[:warning] = t ".duplicate_social_email"
  65       end
  66     elsif check_signup_allowed?
  67       @user = User.new
  68     else
  69       render :action => "blocked"
  70     end
  71   end
  72
  73   def create
  74     @user = User.new(user_params)
  75
  76     if @user.auth_uid.present?
  77       # We are creating an account with external authentication and
  78       # no password was specified so create a random one
  79       @user.pass_crypt = SecureRandom.base64(16)
  80       @user.pass_crypt_confirmation = @user.pass_crypt
  81     end
  82
  83     if @user.invalid?
  84       # Something is wrong with a new user, so rerender the form
  85       render :action => "new"
  86     elsif Settings.turnstile_site_key && !valid_turnstile_response?(params["cf-turnstile-response"])
  87       # Invalid turnstile response, so rerender the form
  88       flash.now[:error] = t ".not_human"
  89       render :action => "new"
  90     elsif !check_signup_allowed?(@user.email)
  91       # Email is blocked
  92       render :action => "blocked"
  93     else
  94       # Save the user record
  95       if save_new_user(@user, params[:email_hmac])
  96         RateLimiter.signup_ip_limiter.update(request.remote_ip)
  97         RateLimiter.signup_email_limiter.update(canonical_email(@user.email))
  98
  99         flash[:matomo_goal] = Settings.matomo["goals"]["signup"] if defined?(Settings.matomo)
 100
 101         referer = welcome_path(welcome_options(params[:referer]))
 102
 103         if @user.status == "active"
 104           successful_login(@user, referer)
 105         else
 106           session[:pending_user] = @user.id
 107           UserMailer.with(
 108             :user => @user,
 109             :token => @user.generate_token_for(:new_user),
 110             :referer => referer
 111           ).signup_confirm.deliver_later
 112           redirect_to :controller => :confirmations, :action => :confirm, :display_name => @user.display_name
 113         end
 114       else
 115         render :action => "new", :referer => params[:referer]
 116       end
 117     end
 118   end
 119
 120   def go_public
 121     current_user.data_public = true
 122     current_user.save
 123     flash[:notice] = t ".flash success"
 124     redirect_to account_path
 125   end
 126
 127   ##
 128   # omniauth success callback
 129   def auth_success
 130     referer = request.env["omniauth.params"]["referer"]
 131     auth_info = request.env["omniauth.auth"]
 132
 133     provider = auth_info[:provider]
 134     uid = auth_info[:uid]
 135     name = auth_info[:info][:name]
 136     email = auth_info[:info][:email]
 137
 138     email_verified = case provider
 139                      when "google", "apple", "facebook", "microsoft", "github", "wikipedia"
 140                        true
 141                      else
 142                        false
 143                      end
 144
 145     if settings = session.delete(:new_user_settings)
 146       current_user.auth_provider = provider
 147       current_user.auth_uid = uid
 148
 149       update_user(current_user, settings)
 150
 151       flash.discard
 152
 153       session[:user_errors] = current_user.errors.as_json
 154
 155       redirect_to account_path
 156     else
 157       user = User.find_by(:auth_provider => provider, :auth_uid => uid)
 158
 159       if user.nil? && provider == "google"
 160         openid_url = auth_info[:extra][:id_info]["openid_id"]
 161         user = User.find_by(:auth_provider => "openid", :auth_uid => openid_url) if openid_url
 162         user&.update(:auth_provider => provider, :auth_uid => uid)
 163       end
 164
 165       if user
 166         case user.status
 167         when "pending"
 168           unconfirmed_login(user, referer)
 169         when "active", "confirmed"
 170           successful_login(user, referer)
 171         when "suspended"
 172           failed_login({ :partial => "sessions/suspended_flash" }, user.display_name, referer)
 173         else
 174           failed_login(t("sessions.new.auth failure"), user.display_name, referer)
 175         end
 176       else
 177         email_hmac = UsersController.message_hmac(email) if email_verified && email
 178         redirect_to :action => "new", :nickname => name, :email => email, :email_hmac => email_hmac,
 179                     :auth_provider => provider, :auth_uid => uid, :referer => referer
 180       end
 181     end
 182   end
 183
 184   ##
 185   # omniauth failure callback
 186   def auth_failure
 187     flash[:error] = t(params[:message], :scope => "users.auth_failure", :default => t(".unknown_error"))
 188
 189     origin = safe_referer(params[:origin]) if params[:origin]
 190
 191     redirect_to origin || login_url
 192   end
 193
 194   def self.message_hmac(text)
 195     sha256 = Digest::SHA256.new
 196     sha256 << Rails.application.key_generator.generate_key("openstreetmap/email_address")
 197     sha256 << text
 198     Base64.urlsafe_encode64(sha256.digest)
 199   end
 200
 201   private
 202
 203   def save_new_user(user, email_hmac)
 204     user.data_public = true
 205     user.description = "" if user.description.nil?
 206     user.creation_address = request.remote_ip
 207     user.languages =
 208       if request.cookies["_osm_locale"]
 209         Locale.list(request.cookies["_osm_locale"])
 210       else
 211         http_accept_language.user_preferred_languages
 212       end
 213     user.terms_agreed = Time.now.utc
 214     user.tou_agreed = Time.now.utc
 215     user.terms_seen = true
 216
 217     if user.auth_uid.blank?
 218       user.auth_provider = nil
 219       user.auth_uid = nil
 220     elsif email_hmac && ActiveSupport::SecurityUtils.secure_compare(email_hmac, UsersController.message_hmac(user.email))
 221       user.activate
 222     end
 223
 224     user.save
 225   end
 226
 227   def welcome_options(referer = nil)
 228     uri = URI(referer) if referer.present?
 229
 230     return { "oauth_return_url" => uri&.to_s } if uri&.path == oauth_authorization_path
 231
 232     begin
 233       %r{map=(.*)/(.*)/(.*)}.match(uri.fragment) do |m|
 234         editor = Rack::Utils.parse_query(uri.query).slice("editor")
 235         return { "zoom" => m[1], "lat" => m[2], "lon" => m[3] }.merge(editor)
 236       end
 237     rescue StandardError
 238       # Use default
 239     end
 240   end
 241
 242   ##
 243   # return permitted user parameters
 244   def user_params
 245     params.expect(:user => [:email, :display_name,
 246                             :auth_provider, :auth_uid,
 247                             :pass_crypt, :pass_crypt_confirmation])
 248   end
 249
 250   ##
 251   # check signup acls
 252   def check_signup_allowed?(email = nil)
 253     domain = if email.nil?
 254                nil
 255              else
 256                email.split("@").last
 257              end
 258
 259     mx_servers = if domain.nil?
 260                    nil
 261                  else
 262                    domain_mx_servers(domain)
 263                  end
 264
 265     return true if Acl.allow_account_creation?(request.remote_ip, :domain => domain, :mx => mx_servers)
 266
 267     blocked = Acl.no_account_creation?(request.remote_ip, :domain => domain, :mx => mx_servers)
 268
 269     blocked ||= !RateLimiter.signup_ip_limiter.allow?(request.remote_ip)
 270
 271     blocked ||= email && !RateLimiter.signup_email_limiter.allow?(canonical_email(email))
 272
 273     logger.info "Blocked signup from #{request.remote_ip} for #{email}" if blocked
 274
 275     !blocked
 276   end
 277
 278   ##
 279   # check if a turnstile response is valid
 280   def valid_turnstile_response?(turnstile_response)
 281     response = OSM.http_client.post("https://challenges.cloudflare.com/turnstile/v0/siteverify", {
 282                                       :secret => Settings.turnstile_secret_key,
 283                                       :response => turnstile_response,
 284                                       :remoteip => request.remote_ip
 285                                     })
 286
 287     return false unless response.success?
 288
 289     parsed_response = JSON.parse(response.body)
 290
 291     parsed_response["success"]
 292   end
 293 end