You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
74 lines
2.6 KiB
74 lines
2.6 KiB
diff --git a/Lib/http/client.py b/Lib/http/client.py
|
|
index f0d2642..0a044e9 100644
|
|
--- a/Lib/http/client.py
|
|
+++ b/Lib/http/client.py
|
|
@@ -151,6 +151,10 @@ _contains_disallowed_url_pchar_re = re.compile('[\x00-\x20\x7f]')
|
|
# _is_allowed_url_pchars_re = re.compile(r"^[/!$&'()*+,;=:@%a-zA-Z0-9._~-]+$")
|
|
# We are more lenient for assumed real world compatibility purposes.
|
|
|
|
+# These characters are not allowed within HTTP method names
|
|
+# to prevent http header injection.
|
|
+_contains_disallowed_method_pchar_re = re.compile('[\x00-\x1f]')
|
|
+
|
|
# We always set the Content-Length header for these methods because some
|
|
# servers will otherwise respond with a 411
|
|
_METHODS_EXPECTING_BODY = {'PATCH', 'POST', 'PUT'}
|
|
@@ -1117,6 +1121,8 @@ class HTTPConnection:
|
|
else:
|
|
raise CannotSendRequest(self.__state)
|
|
|
|
+ self._validate_method(method)
|
|
+
|
|
# Save the method we use, we need it later in the response phase
|
|
self._method = method
|
|
if not url:
|
|
@@ -1207,6 +1213,15 @@ class HTTPConnection:
|
|
# For HTTP/1.0, the server will assume "not chunked"
|
|
pass
|
|
|
|
+ def _validate_method(self, method):
|
|
+ """Validate a method name for putrequest."""
|
|
+ # prevent http header injection
|
|
+ match = _contains_disallowed_method_pchar_re.search(method)
|
|
+ if match:
|
|
+ raise ValueError(
|
|
+ f"method can't contain control characters. {method!r} "
|
|
+ f"(found at least {match.group()!r})")
|
|
+
|
|
def putheader(self, header, *values):
|
|
"""Send a request header line to the server.
|
|
|
|
diff --git a/Lib/test/test_httplib.py b/Lib/test/test_httplib.py
|
|
index 5795b7a..af0350f 100644
|
|
--- a/Lib/test/test_httplib.py
|
|
+++ b/Lib/test/test_httplib.py
|
|
@@ -359,6 +359,28 @@ class HeaderTests(TestCase):
|
|
self.assertEqual(lines[2], "header: Second: val")
|
|
|
|
|
|
+class HttpMethodTests(TestCase):
|
|
+ def test_invalid_method_names(self):
|
|
+ methods = (
|
|
+ 'GET\r',
|
|
+ 'POST\n',
|
|
+ 'PUT\n\r',
|
|
+ 'POST\nValue',
|
|
+ 'POST\nHOST:abc',
|
|
+ 'GET\nrHost:abc\n',
|
|
+ 'POST\rRemainder:\r',
|
|
+ 'GET\rHOST:\n',
|
|
+ '\nPUT'
|
|
+ )
|
|
+
|
|
+ for method in methods:
|
|
+ with self.assertRaisesRegex(
|
|
+ ValueError, "method can't contain control characters"):
|
|
+ conn = client.HTTPConnection('example.com')
|
|
+ conn.sock = FakeSocket(None)
|
|
+ conn.request(method=method, url="/")
|
|
+
|
|
+
|
|
class TransferEncodingTest(TestCase):
|
|
expected_body = b"It's just a flesh wound"
|
|
|