From 6b67f13aaf84560f0311109a49432b4a92898dd7 Mon Sep 17 00:00:00 2001
From: f <f@sutty.nl>
Date: Thu, 29 Jul 2021 10:53:54 -0300
Subject: [PATCH] Origin y Referer
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Algunos navegadores no envían Origin, la forma de obtenerlo es mirar en
el Referer.
---
 app/controllers/api/v1/base_controller.rb | 24 ++++++++++++++++++++++-
 1 file changed, 23 insertions(+), 1 deletion(-)

diff --git a/app/controllers/api/v1/base_controller.rb b/app/controllers/api/v1/base_controller.rb
index 2d58187..649c607 100644
--- a/app/controllers/api/v1/base_controller.rb
+++ b/app/controllers/api/v1/base_controller.rb
@@ -23,8 +23,30 @@ module Api
                      end
       end
 
+      # Referer
+      #
+      # @see {https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Referer}
+      # @return [String,Nil]
+      def referer
+        request.referer
+      end
+      alias referrer referer
+
+      # Origin
+      #
+      # @see {https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Origin}
+      # @return [String,Nil]
       def origin
-        request.headers['Origin']
+        request.origin
+      end
+
+      # Genera un header Origin a partir del Referer si existe.
+      #
+      # @return [String,Nil]
+      def origin_from_referer
+        return if referer.blank?
+
+        referer.split('/', 4).tap { |u| u.pop if u.size > 3 }.join('/')
       end
 
       # Los navegadores antiguos no envían Origin