From e05ca2aff4e7e3da133c2a2410e7d2c9bb3c1d12 Mon Sep 17 00:00:00 2001 From: "R. David Murray" Date: Tue, 28 Dec 2010 18:54:13 +0000 Subject: #9824: encode , and ; in cookie values so that browsers don't split on them There is a small chance of backward incompatibility here, but only for non-SimpleCookie applications reading SimpleCookie generated cookies. Even then, any such ap is likely to be handling escaped values already, and it would take a fairly perverse implementation of unescaping to fail to unescape these newly escaped chars, so the risk seems minimal. --- Lib/http/cookies.py | 5 +++++ Lib/test/test_http_cookies.py | 8 ++++++++ Misc/NEWS | 3 +++ 3 files changed, 16 insertions(+) diff --git a/Lib/http/cookies.py b/Lib/http/cookies.py index fb9589c..93da627 100644 --- a/Lib/http/cookies.py +++ b/Lib/http/cookies.py @@ -173,6 +173,11 @@ _Translator = { '\033' : '\\033', '\034' : '\\034', '\035' : '\\035', '\036' : '\\036', '\037' : '\\037', + # Because of the way browsers really handle cookies (as opposed + # to what the RFC says) we also encode , and ; + + ',' : '\\054', ';' : '\\073', + '"' : '\\"', '\\' : '\\\\', '\177' : '\\177', '\200' : '\\200', '\201' : '\\201', diff --git a/Lib/test/test_http_cookies.py b/Lib/test/test_http_cookies.py index b008e0f..f9a98c4 100644 --- a/Lib/test/test_http_cookies.py +++ b/Lib/test/test_http_cookies.py @@ -69,6 +69,14 @@ class CookieTests(unittest.TestCase): """) + def test_extended_encode(self): + # Issue 9824: some browsers don't follow the standard; we now + # encode , and ; to keep them from tripping up. + C = cookies.SimpleCookie() + C['val'] = "some,funky;stuff" + self.assertEqual(C.output(['val']), + 'Set-Cookie: val="some\\054funky\\073stuff"') + def test_special_attrs(self): # 'expires' C = cookies.SimpleCookie('Customer="WILE_E_COYOTE"') diff --git a/Misc/NEWS b/Misc/NEWS index f69abcf..8eec18e 100644 --- a/Misc/NEWS +++ b/Misc/NEWS @@ -20,6 +20,9 @@ Core and Builtins Library ------- +- Issue 9824: SimpleCookie now encodes , and ; in values to cater to how + browsers actually parse cookies. + - Issue 9333: os.symlink now available regardless of user privileges. The function now raises OSError on Windows >=6.0 when the user is unable to create symbolic links. XP and 2003 still raise NotImplementedError. -- cgit v0.12