X-Git-Url: https://git.openstreetmap.org./rails.git/blobdiff_plain/09ba878519c73d517fa88fc1c2cad1d1924fdf84..a50ad1c895f2d7ed3dfa4d40f3748ae6fb801256:/app/controllers/application_controller.rb

diff --git a/app/controllers/application_controller.rb b/app/controllers/application_controller.rb
index a367a1b0a..690bdf5ca 100644
--- a/app/controllers/application_controller.rb
+++ b/app/controllers/application_controller.rb
@@ -3,8 +3,12 @@ class ApplicationController < ActionController::Base
 
   protect_from_forgery :with => :exception
 
+  rescue_from CanCan::AccessDenied, :with => :deny_access
+
   before_action :fetch_body
+  around_action :better_errors_allow_inline, :if => proc { Rails.env.development? }
 
+  attr_accessor :current_user
   helper_method :current_user
 
   def authorize_web
@@ -15,22 +19,20 @@ class ApplicationController < ActionController::Base
         session.delete(:user)
         session_expires_automatically
 
-        redirect_to :controller => "user", :action => "suspended"
+        redirect_to :controller => "users", :action => "suspended"
 
       # don't allow access to any auth-requiring part of the site unless
       # the new CTs have been seen (and accept/decline chosen).
       elsif !current_user.terms_seen && flash[:skip_terms].nil?
         flash[:notice] = t "user.terms.you need to accept or decline"
         if params[:referer]
-          redirect_to :controller => "user", :action => "terms", :referer => params[:referer]
+          redirect_to :controller => "users", :action => "terms", :referer => params[:referer]
         else
-          redirect_to :controller => "user", :action => "terms", :referer => request.fullpath
+          redirect_to :controller => "users", :action => "terms", :referer => request.fullpath
         end
       end
     elsif session[:token]
-      if self.current_user = User.authenticate(:token => session[:token])
-        session[:user] = current_user.id
-      end
+      session[:user] = current_user.id if self.current_user = User.authenticate(:token => session[:token])
     end
   rescue StandardError => ex
     logger.info("Exception authorizing user: #{ex}")
@@ -41,7 +43,7 @@ class ApplicationController < ActionController::Base
   def require_user
     unless current_user
       if request.get?
-        redirect_to :controller => "user", :action => "login", :referer => request.fullpath
+        redirect_to :controller => "users", :action => "login", :referer => request.fullpath
       else
         head :forbidden
       end
@@ -176,7 +178,7 @@ class ApplicationController < ActionController::Base
   end
 
   def authorize(realm = "Web Password", errormessage = "Couldn't authenticate you")
-    # make the @user object from any auth sources we have
+    # make the current_user object from any auth sources we have
     setup_user_auth
 
     # handle authenticate pass/fail
@@ -283,8 +285,7 @@ class ApplicationController < ActionController::Base
     # TODO: some sort of escaping of problem characters in the message
     response.headers["Error"] = message
 
-    if request.headers["X-Error-Format"] &&
-       request.headers["X-Error-Format"].casecmp("xml").zero?
+    if request.headers["X-Error-Format"]&.casecmp("xml")&.zero?
       result = OSM::API.new.get_xml_doc
       result.root.name = "osmError"
       result.root << (XML::Node.new("status") << "#{Rack::Utils.status_code(status)} #{Rack::Utils::HTTP_STATUS_CODES[status]}")
@@ -296,25 +297,26 @@ class ApplicationController < ActionController::Base
     end
   end
 
-  def preferred_languages
-    @languages ||= if params[:locale]
-                     Locale.list(params[:locale])
-                   elsif current_user
-                     current_user.preferred_languages
-                   else
-                     Locale.list(http_accept_language.user_preferred_languages)
-                   end
+  def preferred_languages(reset = false)
+    @preferred_languages = nil if reset
+    @preferred_languages ||= if params[:locale]
+                               Locale.list(params[:locale])
+                             elsif current_user
+                               current_user.preferred_languages
+                             else
+                               Locale.list(http_accept_language.user_preferred_languages)
+                             end
   end
 
   helper_method :preferred_languages
 
-  def set_locale
-    if current_user && current_user.languages.empty? && !http_accept_language.user_preferred_languages.empty?
+  def set_locale(reset = false)
+    if current_user&.languages&.empty? && !http_accept_language.user_preferred_languages.empty?
       current_user.languages = http_accept_language.user_preferred_languages
       current_user.save
     end
 
-    I18n.locale = Locale.available.preferred(preferred_languages)
+    I18n.locale = Locale.available.preferred(preferred_languages(reset))
 
     response.headers["Vary"] = "Accept-Language"
     response.headers["Content-Language"] = I18n.locale.to_s
@@ -345,7 +347,7 @@ class ApplicationController < ActionController::Base
   # or raises a suitable error. +method+ should be a symbol, e.g: :put or :get.
   def assert_method(method)
     ok = request.send((method.to_s.downcase + "?").to_sym)
-    raise OSM::APIBadMethodError.new(method) unless ok
+    raise OSM::APIBadMethodError, method unless ok
   end
 
   ##
@@ -365,7 +367,7 @@ class ApplicationController < ActionController::Base
       yield
     end
   rescue ActionView::Template::Error => ex
-    ex = ex.original_exception
+    ex = ex.cause
 
     if ex.is_a?(Timeout::Error) ||
        (ex.is_a?(ActiveRecord::StatementInvalid) && ex.message =~ /execution expired/)
@@ -378,21 +380,19 @@ class ApplicationController < ActionController::Base
   end
 
   ##
-  # ensure that there is a "this_user" instance variable
-  def lookup_this_user
-    unless @this_user = User.active.find_by(:display_name => params[:display_name])
-      render_unknown_user params[:display_name]
-    end
+  # ensure that there is a "user" instance variable
+  def lookup_user
+    render_unknown_user params[:display_name] unless @user = User.active.find_by(:display_name => params[:display_name])
   end
 
   ##
   # render a "no such user" page
   def render_unknown_user(name)
-    @title = t "user.no_such_user.title"
+    @title = t "users.no_such_user.title"
     @not_found_user = name
 
     respond_to do |format|
-      format.html { render :template => "user/no_such_user", :status => :not_found }
+      format.html { render :template => "users/no_such_user", :status => :not_found }
       format.all { head :not_found }
     end
   end
@@ -412,8 +412,11 @@ class ApplicationController < ActionController::Base
 
   def map_layout
     append_content_security_policy_directives(
-      :connect_src => %w[nominatim.openstreetmap.org overpass-api.de router.project-osrm.org valhalla.mapzen.com],
-      :script_src => %w[graphhopper.com open.mapquestapi.com],
+      :child_src => %w[http://127.0.0.1:8111 https://127.0.0.1:8112],
+      :frame_src => %w[http://127.0.0.1:8111 https://127.0.0.1:8112],
+      :connect_src => %w[nominatim.openstreetmap.org overpass-api.de router.project-osrm.org graphhopper.com],
+      :form_action => %w[render.openstreetmap.org],
+      :script_src => %w[open.mapquestapi.com],
       :img_src => %w[developer.mapquest.com]
     )
 
@@ -426,10 +429,14 @@ class ApplicationController < ActionController::Base
     request.xhr? ? "xhr" : "map"
   end
 
+  def allow_thirdparty_images
+    append_content_security_policy_directives(:img_src => %w[*])
+  end
+
   def preferred_editor
     editor = if params[:editor]
                params[:editor]
-             elsif current_user && current_user.preferred_editor
+             elsif current_user&.preferred_editor
                current_user.preferred_editor
              else
                DEFAULT_EDITOR
@@ -450,6 +457,39 @@ class ApplicationController < ActionController::Base
     end
   end
 
+  def better_errors_allow_inline
+    yield
+  rescue StandardError
+    append_content_security_policy_directives(
+      :script_src => %w['unsafe-inline'],
+      :style_src => %w['unsafe-inline']
+    )
+
+    raise
+  end
+
+  def current_ability
+    Ability.new(current_user).merge(granted_capability)
+  end
+
+  def granted_capability
+    Capability.new(current_user, current_token)
+  end
+
+  def deny_access(_exception)
+    if current_token
+      set_locale
+      report_error t("oauth.permissions.missing"), :forbidden
+    elsif current_user
+      set_locale
+      report_error t("application.permission_denied"), :forbidden
+    elsif request.get?
+      redirect_to :controller => "users", :action => "login", :referer => request.fullpath
+    else
+      head :forbidden
+    end
+  end
+
   private
 
   # extract authorisation credentials from headers, returns user = nil if none
@@ -462,22 +502,10 @@ class ApplicationController < ActionController::Base
       authdata = request.env["HTTP_AUTHORIZATION"].to_s.split
     end
     # only basic authentication supported
-    if authdata && authdata[0] == "Basic"
-      user, pass = Base64.decode64(authdata[1]).split(":", 2)
-    end
+    user, pass = Base64.decode64(authdata[1]).split(":", 2) if authdata && authdata[0] == "Basic"
     [user, pass]
   end
 
-  # used to get the current logged in user
-  def current_user
-    @user
-  end
-
-  # used to set the current logged in user
-  def current_user=(user)
-    @user = user
-  end
-
   # override to stop oauth plugin sending errors
   def invalid_oauth_response; end
 end