Avoid errors when /edit is called on an invalid object

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

diff --git a/app/controllers/site_controller.rb b/app/controllers/site_controller.rb
index b0552322ed6d808efbf7a82bae2e001eb9b104fc..3a69eed120e1299ed90287c2f15ae96cb0515823 100644 (file)
--- a/app/controllers/site_controller.rb
+++ b/app/controllers/site_controller.rb
@@ -6,14 +6,13 @@ class SiteController < ApplicationController
   before_action :set_locale
   before_action :redirect_browse_params, :only => :index
   before_action :redirect_map_params, :only => [:index, :edit, :export]
-  before_action :require_user, :only => [:welcome]
   before_action :require_oauth, :only => [:index]
   before_action :update_totp, :only => [:index]
 
+  authorize_resource :class => false
+
   def index
-    unless STATUS == :database_readonly || STATUS == :database_offline
-      session[:location] ||= OSM.ip_location(request.env["REMOTE_ADDR"])
-    end
+    session[:location] ||= OSM.ip_location(request.env["REMOTE_ADDR"]) unless Settings.status == "database_readonly" || Settings.status == "database_offline"
   end
 
   def permalink
@@ -50,7 +49,7 @@ class SiteController < ApplicationController
     new_params[:anchor] = "map=#{zoom}/#{lat}/#{lon}"
     new_params[:anchor] += "&layers=#{params[:layers]}" if params.key? :layers
 
-    redirect_to Hash[new_params]
+    redirect_to new_params.to_unsafe_h
   end
 
   def key
@@ -69,34 +68,39 @@ class SiteController < ApplicationController
       require_user
     end
 
-    if editor == "potlatch" || editor == "potlatch2"
+    if %w[potlatch potlatch2].include?(editor)
       append_content_security_policy_directives(
-        :object_src => %w(*),
-        :plugin_types => %w(application/x-shockwave-flash),
-        :script_src => %w('unsafe-inline')
+        :connect_src => %w[*],
+        :object_src => %w[*],
+        :plugin_types => %w[application/x-shockwave-flash],
+        :script_src => %w['unsafe-inline']
       )
     end
 
-    if params[:node]
-      bbox = Node.find(params[:node]).bbox.to_unscaled
-      @lat = bbox.centre_lat
-      @lon = bbox.centre_lon
-      @zoom = 18
-    elsif params[:way]
-      bbox = Way.find(params[:way]).bbox.to_unscaled
-      @lat = bbox.centre_lat
-      @lon = bbox.centre_lon
-      @zoom = 17
-    elsif params[:note]
-      note = Note.find(params[:note])
-      @lat = note.lat
-      @lon = note.lon
-      @zoom = 17
-    elsif params[:gpx] && @user
-      trace = Trace.visible_to(@user).find(params[:gpx])
-      @lat = trace.latitude
-      @lon = trace.longitude
-      @zoom = 16
+    begin
+      if params[:node]
+        bbox = Node.visible.find(params[:node]).bbox.to_unscaled
+        @lat = bbox.centre_lat
+        @lon = bbox.centre_lon
+        @zoom = 18
+      elsif params[:way]
+        bbox = Way.visible.find(params[:way]).bbox.to_unscaled
+        @lat = bbox.centre_lat
+        @lon = bbox.centre_lon
+        @zoom = 17
+      elsif params[:note]
+        note = Note.visible.find(params[:note])
+        @lat = note.lat
+        @lon = note.lon
+        @zoom = 17
+      elsif params[:gpx] && current_user
+        trace = Trace.visible_to(current_user).find(params[:gpx])
+        @lat = trace.latitude
+        @lon = trace.longitude
+        @zoom = 16
+      end
+    rescue ActiveRecord::RecordNotFound
+      # don't try and derive a location from a missing/deleted object
     end
   end
 
@@ -115,17 +119,18 @@ class SiteController < ApplicationController
   def offline; end
 
   def preview
-    render :text => RichText.new(params[:format], params[:text]).to_html
+    render :html => RichText.new(params[:type], params[:text]).to_html
   end
 
   def id
     append_content_security_policy_directives(
-      :connect_src => %w(taginfo.openstreetmap.org *.mapillary.com),
-      :img_src => %w(*),
-      :script_src => %w(dev.virtualearth.net)
+      :connect_src => %w[*],
+      :img_src => %w[* blob:],
+      :script_src => %w[dev.virtualearth.net 'unsafe-eval'],
+      :style_src => %w['unsafe-inline']
     )
 
-    render "id", :layout => false
+    render :layout => false
   end
 
   private
@@ -147,9 +152,7 @@ class SiteController < ApplicationController
   def redirect_map_params
     anchor = []
 
-    if params[:lat] && params[:lon]
-      anchor << "map=#{params.delete(:zoom) || 5}/#{params.delete(:lat)}/#{params.delete(:lon)}"
-    end
+    anchor << "map=#{params.delete(:zoom) || 5}/#{params.delete(:lat)}/#{params.delete(:lon)}" if params[:lat] && params[:lon]
 
     if params[:layers]
       anchor << "layers=#{params.delete(:layers)}"
@@ -157,8 +160,6 @@ class SiteController < ApplicationController
       anchor << "layers=N"
     end
 
-    if anchor.present?
-      redirect_to Hash[params].merge(:anchor => anchor.join("&"))
-    end
+    redirect_to params.to_unsafe_h.merge(:anchor => anchor.join("&")) if anchor.present?
   end
 end