Cookie mode (#7162)

* Add ability to set cookie mode

* Update docs

* Better validation of cookie mode

* Docs updates

* Update error msg

* Update config.md

Change default samesite mode to None

* Update settings.py

Default mode is None

* Update config_template.yaml

Change default value in config file template

docs/docs/start/config.md

@@ -94,13 +94,14 @@ Depending on how your InvenTree installation is configured, you will need to pay
 | --- | --- | --- | --- |
 | INVENTREE_ALLOWED_HOSTS | allowed_hosts | List of allowed hosts | `*` |
 | INVENTREE_TRUSTED_ORIGINS | trusted_origins | List of trusted origins. Refer to the [django documentation]({% include "django.html" %}/ref/settings/#csrf-trusted-origins) | Uses the *INVENTREE_SITE_URL* parameter, if set. Otherwise, an empty list. |
-| INVENTREE_CORS_ORIGIN_ALLOW_ALL | cors.allow_all | Allow all remote URLS for CORS checks | False |
+| INVENTREE_CORS_ORIGIN_ALLOW_ALL | cors.allow_all | Allow all remote URLS for CORS checks | `False` |
 | INVENTREE_CORS_ORIGIN_WHITELIST | cors.whitelist | List of whitelisted CORS URLs. Refer to the [django-cors-headers documentation](https://github.com/adamchainz/django-cors-headers#cors_allowed_origins-sequencestr) | Uses the *INVENTREE_SITE_URL* parameter, if set. Otherwise, an empty list. |
 | INVENTREE_CORS_ORIGIN_REGEX | cors.regex | List of regular expressions for CORS whitelisted URL patterns | *Empty list* |
-| INVENTREE_USE_X_FORWARDED_HOST | use_x_forwarded_host | Use forwarded host header | False |
-| INVENTREE_USE_X_FORWARDED_PORT | use_x_forwarded_port | Use forwarded port header | False |
-| INVENTREE_CORS_ALLOW_CREDENTIALS | cors.allow_credentials | Allow cookies in cross-site requests | True |
-| INVENTREE_SESSION_COOKIE_SECURE | session_cookie_secure | Enforce secure session cookies | False |
+| INVENTREE_CORS_ALLOW_CREDENTIALS | cors.allow_credentials | Allow cookies in cross-site requests | `True` |
+| INVENTREE_USE_X_FORWARDED_HOST | use_x_forwarded_host | Use forwarded host header | `False` |
+| INVENTREE_USE_X_FORWARDED_PORT | use_x_forwarded_port | Use forwarded port header | `False` |
+| INVENTREE_SESSION_COOKIE_SECURE | cookie.secure | Enforce secure session cookies | `False` |
+| INVENTREE_COOKIE_SAMESITE | cookie.samesite | Session cookie mode. Must be one of `Strict | Lax | None`. Refer to the [mozilla developer docs](https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Set-Cookie) for more information. | `None` |
 
 ### Proxy Settings
 

src/backend/InvenTree/InvenTree/settings.py

@@ -1106,13 +1106,27 @@
     )
     sys.exit(-1)
 
+COOKIE_MODE = (
+    str(get_setting('INVENTREE_COOKIE_SAMESITE', 'cookie.samesite', 'None'))
+    .lower()
+    .strip()
+)
+
+valid_cookie_modes = {'lax': 'Lax', 'strict': 'Strict', 'none': None, 'null': None}
+
+if COOKIE_MODE not in valid_cookie_modes.keys():
+    logger.error('Invalid cookie samesite mode: %s', COOKIE_MODE)
+    sys.exit(-1)
+
+COOKIE_MODE = valid_cookie_modes[COOKIE_MODE.lower()]
+
 # Additional CSRF settings
 CSRF_HEADER_NAME = 'HTTP_X_CSRFTOKEN'
 CSRF_COOKIE_NAME = 'csrftoken'
-CSRF_COOKIE_SAMESITE = 'Lax'
-SESSION_COOKIE_SAMESITE = 'Lax'
+CSRF_COOKIE_SAMESITE = COOKIE_MODE
+SESSION_COOKIE_SAMESITE = COOKIE_MODE
 SESSION_COOKIE_SECURE = get_boolean_setting(
-    'INVENTREE_SESSION_COOKIE_SECURE', 'session_cookie_secure', False
+    'INVENTREE_SESSION_COOKIE_SECURE', 'cookie.secure', False
 )
 
 USE_X_FORWARDED_HOST = get_boolean_setting(

src/backend/InvenTree/config_template.yaml

@@ -181,6 +181,11 @@ use_x_forwarded_host: false
 # Override with the environment variable INVENTREE_USE_X_FORWARDED_PORT
 use_x_forwarded_port: false
 
+# Cookie settings
+cookie:
+  secure: false
+  samesite: none
+
 # Cross Origin Resource Sharing (CORS) settings (see https://github.com/adamchainz/django-cors-headers)
 cors:
   allow_all: true