[IMP] hw_drivers: Remove http.py.iotpatch

We used to patch http.py using a diff. This was really not practical
because every time the file was modified, the diff had to be recreated.
We now override the specific methods directly.

closes odoo/odoo#60366

X-original-commit: a6012f03
Signed-off-by: Quentin Lejeune (qle) <qle@odoo.com>
Signed-off-by: Antoine Prieëls <aprieels@users.noreply.github.com>

addons/hw_drivers/__init__.py

@@ -6,5 +6,6 @@ from . import controllers
 from . import driver
 from . import event_manager
 from . import exception_logger
+from . import http
 from . import interface
 from . import main

addons/hw_drivers/http.py

+# -*- coding: utf-8 -*-
+# Part of Odoo. See LICENSE file for full copyright and licensing details.
+
+from odoo import http
+
+
+class IoTBoxHttpRequest(http.HttpRequest):
+    def dispatch(self):
+        if self._is_cors_preflight(http.request.endpoint):
+            # Using the PoS in debug mode in v12, the call to '/hw_proxy/handshake' contains the
+            # 'X-Debug-Mode' header, which was removed from 'Access-Control-Allow-Headers' in v13.
+            # When the code of http.py is not checked out to v12 (i.e. in Community), the connection
+            # fails as the header is rejected and none of the devices can be used.
+            headers = {
+                'Access-Control-Max-Age': 60 * 60 * 24,
+                'Access-Control-Allow-Headers': 'Origin, X-Requested-With, Content-Type, Accept, Authorization, X-Debug-Mode'
+            }
+            return http.Response(status=200, headers=headers)
+        return super(IoTBoxHttpRequest, self).dispatch()
+
+
+class IoTBoxRoot(http.Root):
+    def setup_db(self, httprequest):
+        # No database on the IoT Box
+        pass
+
+    def get_request(self, httprequest):
+        # Override HttpRequestwith IoTBoxHttpRequest
+        if httprequest.mimetype not in ("application/json", "application/json-rpc"):
+            return IoTBoxHttpRequest(httprequest)
+        return super(IoTBoxRoot, self).get_request(httprequest)
+
+http.Root = IoTBoxRoot
+http.root = IoTBoxRoot()

addons/point_of_sale/tools/posbox/overwrite_after_init/home/pi/odoo/odoo/http.py.iotpatch

---- http_old.py	2020-10-07 15:25:08.432430021 +0200
-+++ http_new.py	2020-10-07 15:26:05.088492713 +0200
-@@ -764,7 +764,7 @@
-         if self._is_cors_preflight(request.endpoint):
-             headers = {
-                 'Access-Control-Max-Age': 60 * 60 * 24,
--                'Access-Control-Allow-Headers': 'Origin, X-Requested-With, Content-Type, Accept, Authorization'
-+                'Access-Control-Allow-Headers': 'Origin, X-Requested-With, Content-Type, Accept, Authorization, X-Debug-Mode'
-             }
-             return Response(status=200, headers=headers)
- 
-@@ -1510,7 +1510,7 @@
-     """
-     httprequest = httprequest or request.httprequest
- 
--    dbs = db_list(True, httprequest)
-+    dbs = []
- 
-     # try the db already in the session
-     db_session = httprequest.session.db