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-rw-r--r--Lib/test/test_urllib.py32
-rw-r--r--Lib/urllib/request.py2
-rw-r--r--Misc/ACKS1
-rw-r--r--Misc/NEWS2
4 files changed, 35 insertions, 2 deletions
diff --git a/Lib/test/test_urllib.py b/Lib/test/test_urllib.py
index 1a40566..1a5013e 100644
--- a/Lib/test/test_urllib.py
+++ b/Lib/test/test_urllib.py
@@ -7,6 +7,7 @@ import http.client
import email.message
import io
import unittest
+from unittest.mock import patch
from test import support
import os
import sys
@@ -89,6 +90,26 @@ class FakeHTTPMixin(object):
http.client.HTTPConnection = self._connection_class
+class FakeFTPMixin(object):
+ def fakeftp(self):
+ class FakeFtpWrapper(object):
+ def __init__(self, user, passwd, host, port, dirs, timeout=None,
+ persistent=True):
+ pass
+
+ def retrfile(self, file, type):
+ return io.BytesIO(), 0
+
+ def close(self):
+ pass
+
+ self._ftpwrapper_class = urllib.request.ftpwrapper
+ urllib.request.ftpwrapper = FakeFtpWrapper
+
+ def unfakeftp(self):
+ urllib.request.ftpwrapper = self._ftpwrapper_class
+
+
class urlopen_FileTests(unittest.TestCase):
"""Test urlopen() opening a temporary file.
@@ -195,7 +216,7 @@ class ProxyTests(unittest.TestCase):
self.env.set('NO_PROXY', 'localhost, anotherdomain.com, newdomain.com')
self.assertTrue(urllib.request.proxy_bypass_environment('anotherdomain.com'))
-class urlopen_HttpTests(unittest.TestCase, FakeHTTPMixin):
+class urlopen_HttpTests(unittest.TestCase, FakeHTTPMixin, FakeFTPMixin):
"""Test urlopen() opening a fake http connection."""
def check_read(self, ver):
@@ -309,6 +330,15 @@ Content-Type: text/html; charset=iso-8859-1
self.assertFalse(e.exception.filename)
self.assertTrue(e.exception.reason)
+ @patch.object(urllib.request, 'MAXFTPCACHE', 0)
+ def test_ftp_cache_pruning(self):
+ self.fakeftp()
+ try:
+ urllib.request.ftpcache['test'] = urllib.request.ftpwrapper('user', 'pass', 'localhost', 21, [])
+ urlopen('ftp://localhost')
+ finally:
+ self.unfakeftp()
+
def test_userpass_inurl(self):
self.fakehttp(b"HTTP/1.0 200 OK\r\n\r\nHello!")
diff --git a/Lib/urllib/request.py b/Lib/urllib/request.py
index 43d6caa..72e91dd 100644
--- a/Lib/urllib/request.py
+++ b/Lib/urllib/request.py
@@ -1911,7 +1911,7 @@ class URLopener:
# XXX thread unsafe!
if len(self.ftpcache) > MAXFTPCACHE:
# Prune the cache, rather arbitrarily
- for k in self.ftpcache.keys():
+ for k in list(self.ftpcache):
if k != key:
v = self.ftpcache[k]
del self.ftpcache[k]
diff --git a/Misc/ACKS b/Misc/ACKS
index 571f1a6..344a29b 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -32,6 +32,7 @@ Fred Allen
Ray Allen
Billy G. Allie
Kevin Altis
+Skyler Leigh Amador
Joe Amenta
A. Amoroso
Mark Anacker
diff --git a/Misc/NEWS b/Misc/NEWS
index 8f05a13..f581cd4 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -22,6 +22,8 @@ Core and Builtins
Library
-------
+- Issue #21463: In urllib.request, fix pruning of the FTP cache.
+
- Issue #21618: The subprocess module could fail to close open fds that were
inherited by the calling process and already higher than POSIX resource
limits would otherwise allow. On systems with a functioning /proc/self/fd