From 3a5f9cd1ae8a2c7101f141d9730878abb74ec92f Mon Sep 17 00:00:00 2001
From: Jannis Leidel <jannis@leidel.info>
Date: Mon, 12 Mar 2012 20:28:09 +0000
Subject: [PATCH] Fixed #17861 -- Took care of special characters when creating
 the staticfiles storage cache keys. Many thanks to Preston Holmes.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@17688 bcc190cf-cafb-0310-a4f2-bffc1f526a37
---
 django/contrib/staticfiles/storage.py            |  2 +-
 tests/regressiontests/staticfiles_tests/tests.py | 16 ++++++++++++++++
 2 files changed, 17 insertions(+), 1 deletion(-)

diff --git a/django/contrib/staticfiles/storage.py b/django/contrib/staticfiles/storage.py
index fe35a3163ea..97e7e9c4942 100644
--- a/django/contrib/staticfiles/storage.py
+++ b/django/contrib/staticfiles/storage.py
@@ -95,7 +95,7 @@ class CachedFilesMixin(object):
         return urlunsplit(unparsed_name)
 
     def cache_key(self, name):
-        return u'staticfiles:cache:%s' % name
+        return u'staticfiles:%s' % hashlib.md5(smart_str(name)).hexdigest()
 
     def url(self, name, force=False):
         """
diff --git a/tests/regressiontests/staticfiles_tests/tests.py b/tests/regressiontests/staticfiles_tests/tests.py
index fc489b33c34..7850b44b77f 100644
--- a/tests/regressiontests/staticfiles_tests/tests.py
+++ b/tests/regressiontests/staticfiles_tests/tests.py
@@ -7,10 +7,12 @@ import posixpath
 import shutil
 import sys
 import tempfile
+import warnings
 from StringIO import StringIO
 
 from django.template import loader, Context
 from django.conf import settings
+from django.core.cache.backends.base import BaseCache, CacheKeyWarning
 from django.core.exceptions import ImproperlyConfigured
 from django.core.files.storage import default_storage
 from django.core.management import call_command
@@ -498,6 +500,20 @@ class TestCollectionCachedStorage(BaseCollectionTestCase,
         self.assertTrue(os.path.join('cached', 'css', 'window.css') in stats['post_processed'])
         self.assertTrue(os.path.join('cached', 'css', 'img', 'window.png') in stats['unmodified'])
 
+    def test_cache_key_memcache_validation(self):
+        """
+        Handle cache key creation correctly, see #17861.
+        """
+        name = "/some crazy/long filename/ with spaces Here and ?#%#$/other/stuff/some crazy/long filename/ with spaces Here and ?#%#$/other/stuff/some crazy/long filename/ with spaces Here and ?#%#$/other/stuff/some crazy/long filename/ with spaces Here and ?#%#$/other/stuff/some crazy/long filename/ with spaces Here and ?#%#$/other/stuff/some crazy/" + chr(22) + chr(180)
+        cache_key = storage.staticfiles_storage.cache_key(name)
+        self.save_warnings_state()
+        cache_validator = BaseCache({})
+        warnings.filterwarnings('error', category=CacheKeyWarning)
+        cache_validator.validate_key(cache_key)
+        self.restore_warnings_state()
+        self.assertEqual(cache_key, 'staticfiles:e95bbc36387084582df2a70750d7b351')
+
+
 # we set DEBUG to False here since the template tag wouldn't work otherwise
 TestCollectionCachedStorage = override_settings(**dict(TEST_SETTINGS,
     STATICFILES_STORAGE='django.contrib.staticfiles.storage.CachedStaticFilesStorage',