mirrors/cpython
1
0
Fork 0
mirror of https://github.com/python/cpython.git synced 2025-08-09 03:19:15 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 8

[3.9] gh-98433: Fix quadratic time idna decoding. (GH-99092) (GH-99222) (#99230)

Browse source 
There was an unnecessary quadratic loop in idna decoding. This restores
the behavior to linear.

(cherry picked from commit d315722564)
(cherry picked from commit a6f6c3a3d6)

Co-authored-by: Miss Islington (bot) <31488909+miss-islington@users.noreply.github.com>
Co-authored-by: Gregory P. Smith <greg@krypto.org>
This commit is contained in:
Miss Islington (bot) 2022-11-10 07:57:41 -08:00 • committed by GitHub
parent b43496c01a
commit c09dba57cf
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
3 changed files with 27 additions and 17 deletions
Download patch file Download diff file Expand all files Collapse all files

6
Lib/test/test_codecs.py
View file

@ -1532,6 +1532,12 @@ class IDNACodecTest(unittest.TestCase):
self.assertEqual("pyth\xf6n.org".encode("idna"), b"xn--pythn-mua.org")
self.assertEqual("pyth\xf6n.org.".encode("idna"), b"xn--pythn-mua.org.")
def test_builtin_decode_length_limit(self):
with self.assertRaisesRegex(UnicodeError, "too long"):
(b"xn--016c"+b"a"*1100).decode("idna")
with self.assertRaisesRegex(UnicodeError, "too long"):
(b"xn--016c"+b"a"*70).decode("idna")
def test_stream(self):
r = codecs.getreader("idna")(io.BytesIO(b"abc"))
r.read(3)