Add cancancan and the first ability definitions for site_controller

[rails.git] / app / controllers / application_controller.rb

diff --git a/app/controllers/application_controller.rb b/app/controllers/application_controller.rb
index 5905b3759276051093a30a1923cb5bb50d032286..394b04d58d5a52b8656bca5db03e49384f425b2a 100644 (file)
--- a/app/controllers/application_controller.rb
+++ b/app/controllers/application_controller.rb
@@ -1,9 +1,11 @@
 class ApplicationController < ActionController::Base
   include SessionPersistence
+  check_authorization
 
   protect_from_forgery :with => :exception
 
   before_action :fetch_body
+  around_action :better_errors_allow_inline, :if => proc { Rails.env.development? }
 
   attr_accessor :current_user
   helper_method :current_user
@@ -29,9 +31,7 @@ class ApplicationController < ActionController::Base
         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}")
@@ -177,7 +177,7 @@ 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
@@ -297,25 +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
+  def set_locale(reset = false)
     if current_user && 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
@@ -379,11 +380,9 @@ 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
 
   ##
@@ -413,8 +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]
     )
 
@@ -427,6 +429,10 @@ 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]
@@ -451,6 +457,22 @@ 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
+
+  rescue_from CanCan::AccessDenied do |exception|
+    raise "Access denied on #{exception.action} #{exception.subject.inspect}"
+    # ...
+  end
+
   private
 
   # extract authorisation credentials from headers, returns user = nil if none
@@ -463,9 +485,7 @@ 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