mirror of
https://github.com/SickGear/SickGear.git
synced 2024-12-01 00:43:37 +00:00
52 lines
1.8 KiB
Text
52 lines
1.8 KiB
Text
|
|
The ssl.match_hostname() function from Python 3.4
|
|
=================================================
|
|
|
|
The Secure Sockets layer is only actually *secure*
|
|
if you check the hostname in the certificate returned
|
|
by the server to which you are connecting,
|
|
and verify that it matches to hostname
|
|
that you are trying to reach.
|
|
|
|
But the matching logic, defined in `RFC2818`_,
|
|
can be a bit tricky to implement on your own.
|
|
So the ``ssl`` package in the Standard Library of Python 3.2
|
|
and greater now includes a ``match_hostname()`` function
|
|
for performing this check instead of requiring every application
|
|
to implement the check separately.
|
|
|
|
This backport brings ``match_hostname()`` to users
|
|
of earlier versions of Python.
|
|
Simply make this distribution a dependency of your package,
|
|
and then use it like this::
|
|
|
|
from backports.ssl_match_hostname import match_hostname, CertificateError
|
|
...
|
|
sslsock = ssl.wrap_socket(sock, ssl_version=ssl.PROTOCOL_SSLv3,
|
|
cert_reqs=ssl.CERT_REQUIRED, ca_certs=...)
|
|
try:
|
|
match_hostname(sslsock.getpeercert(), hostname)
|
|
except CertificateError, ce:
|
|
...
|
|
|
|
Note that the ``ssl`` module is only included in the Standard Library
|
|
for Python 2.6 and later;
|
|
users of Python 2.5 or earlier versions
|
|
will also need to install the ``ssl`` distribution
|
|
from the Python Package Index to use code like that shown above.
|
|
|
|
Brandon Craig Rhodes is merely the packager of this distribution;
|
|
the actual code inside comes verbatim from Python 3.4.
|
|
|
|
History
|
|
-------
|
|
* This function was introduced in python-3.2
|
|
* It was updated for python-3.4a1 for a CVE
|
|
(backports-ssl_match_hostname-3.4.0.1)
|
|
* It was updated from RFC2818 to RFC 6125 compliance in order to fix another
|
|
security flaw for python-3.3.3 and python-3.4a5
|
|
(backports-ssl_match_hostname-3.4.0.2)
|
|
|
|
|
|
.. _RFC2818: http://tools.ietf.org/html/rfc2818.html
|
|
|