python3-django: (v2.2.28) fix ipv6 validation

This patch is only for python3-django_2.2.28.

The URL validator didn't detect invalid IPv6 addresses, treating them
as correct ones, making a testcase fail. (Also, according to the comment,
it could also crash in some cases, though I haven't encountered that)

This backported patch mitigates this behavior.

Signed-off-by: Gyorgy Sarvari <skandigraun@gmail.com>

meta-python/recipes-devtools/python/python3-django/0001-Fixed-33367-Fixed-URLValidator-crash-in-some-edge-ca.patch

@@ -0,0 +1,57 @@
+From 065b10e2757af671f3e64f0c8714e6f2e4eca727 Mon Sep 17 00:00:00 2001
+From: Gyorgy Sarvari <skandigraun@gmail.com>
+Date: Wed, 15 Dec 2021 11:55:19 -0300
+Subject: [PATCH] Fixed #33367 -- Fixed URLValidator crash in some edge cases.
+
+From: mendespedro <windowsxpedro@gmail.com>
+
+Upstream-Status: Backport [https://github.com/django/django/commit/e8b4feddc34ffe5759ec21da8fa027e86e653f1c]
+Signed-off-by: Gyorgy Sarvari <skandigraun@gmail.com>
+---
+ django/core/validators.py | 14 ++++++++------
+ 1 file changed, 8 insertions(+), 6 deletions(-)
+
+diff --git a/django/core/validators.py b/django/core/validators.py
+index 94cc3bf..03cd9b8 100644
+--- a/django/core/validators.py
++++ b/django/core/validators.py
+@@ -120,15 +120,17 @@ class URLValidator(RegexValidator):
+             raise ValidationError(self.message, code=self.code)
+ 
+         # Then check full URL
++        
++        try:
++            splitted_url = urlsplit(value)
++        except ValueError:
++            raise ValidationError(self.message, code=self.code, params={'value': value})
+         try:
+             super().__call__(value)
+         except ValidationError as e:
+             # Trivial case failed. Try for possible IDN domain
+             if value:
+-                try:
+-                    scheme, netloc, path, query, fragment = urlsplit(value)
+-                except ValueError:  # for example, "Invalid IPv6 URL"
+-                    raise ValidationError(self.message, code=self.code)
++                scheme, netloc, path, query, fragment = splitted_url
+                 try:
+                     netloc = netloc.encode('idna').decode('ascii')  # IDN -> ACE
+                 except UnicodeError:  # invalid domain part
+@@ -139,7 +141,7 @@ class URLValidator(RegexValidator):
+                 raise
+         else:
+             # Now verify IPv6 in the netloc part
+-            host_match = re.search(r'^\[(.+)\](?::\d{2,5})?$', urlsplit(value).netloc)
++            host_match = re.search(r'^\[(.+)\](?::\d{2,5})?$', splitted_url.netloc)
+             if host_match:
+                 potential_ip = host_match.groups()[0]
+                 try:
+@@ -151,7 +153,7 @@ class URLValidator(RegexValidator):
+         # section 3.1. It's defined to be 255 bytes or less, but this includes
+         # one byte for the length of the name and one byte for the trailing dot
+         # that's used to indicate absolute names in DNS.
+-        if len(urlsplit(value).hostname) > 253:
++        if splitted_url.hostname is None or len(splitted_url.hostname) > 253:
+             raise ValidationError(self.message, code=self.code)
+ 
+ 

meta-python/recipes-devtools/python/python3-django_2.2.28.bb

@@ -38,6 +38,7 @@ SRC_URI += "file://CVE-2023-31047.patch \
             file://0001-implement-group-method-for-FakeMatch.patch \
             file://0001-fix-ipv6-test.patch \
             file://0001-Fixed-32298-Fixed-URLValidator-hostname-length-valid.patch \
+            file://0001-Fixed-33367-Fixed-URLValidator-crash-in-some-edge-ca.patch \
             "
 
 SRC_URI[sha256sum] = "0200b657afbf1bc08003845ddda053c7641b9b24951e52acd51f6abda33a7413"