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[rails.git] / config / initializers / cors.rb

diff --git a/config/initializers/cors.rb b/config/initializers/cors.rb
index 6fbeb916127e9117bfd3363f419013fdb4747410..320c1db2c4eba6dfb9a04ba1d3859992d66865e0 100644 (file)
--- a/config/initializers/cors.rb
+++ b/config/initializers/cors.rb
@@ -1,13 +1,29 @@
 require "rack/cors"
 
+# Mark CORS responses as uncacheable as we don't want a browser to
+# try and reuse a response that had a different origin, even with
+# revalidation, as the origin check will fail.
+module OpenStreetMap
+  class Cors < Rack::Cors
+    def call(env)
+      status, headers, body = super env
+      if headers["Access-Control-Allow-Origin"]
+        headers["Cache-Control"] = "no-cache"
+      end
+      [status, headers, body]
+    end
+  end
+end
+
 # Allow any and all cross-origin requests to the API. Allow any origin, and
 # any headers. Non-browser requests do not have origin or header restrictions,
 # so browser-requests should be similarly permitted. (Though the API does not
 # require any custom headers, Ajax frameworks may automatically add headers
 # such as X-Requested-By to requests.)
-Rails.configuration.middleware.use Rack::Cors do
+Rails.configuration.middleware.use OpenStreetMap::Cors do
   allow do
     origins "*"
+    resource "/oauth/*", :headers => :any, :methods => [:get, :post]
     resource "/api/*", :headers => :any, :methods => [:get, :post, :put, :delete]
   end
 end