[issue28182] Expose OpenSSL verification results in SSLError
Chi Hsuan Yen
report at bugs.python.org
Tue Sep 20 10:54:13 EDT 2016
Chi Hsuan Yen added the comment:
With this change: (tested with OpenSSL git-master)
@@ -632,20 +651,22 @@ newPySSLSocket(PySSLContext *sslctx, PyS
SSL_set_bio(self->ssl, inbio->bio, outbio->bio);
}
mode = SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER;
#ifdef SSL_MODE_AUTO_RETRY
mode |= SSL_MODE_AUTO_RETRY;
#endif
SSL_set_mode(self->ssl, mode);
+ if (server_hostname != NULL) {
#if HAVE_SNI
- if (server_hostname != NULL)
SSL_set_tlsext_host_name(self->ssl, server_hostname);
#endif
+ SSL_set1_host(self->ssl, server_hostname);
+ }
/* If the socket is in non-blocking mode or timeout mode, set the BIO
* to non-blocking mode (blocking is the default)
*/
if (sock && sock->sock_timeout >= 0) {
BIO_set_nbio(SSL_get_rbio(self->ssl), 1);
BIO_set_nbio(SSL_get_wbio(self->ssl), 1);
}
When connecting to https://wrong.host.badssl.com/, the error is:
ssl.SSLCertVerificationError: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: Hostname mismatch (_ssl.c:768)
With this change in mind, an idea is to drop the Python implementation of match_hostname and rely on OpenSSL's checking mechanism (`do_x509_check`). As a result:
* ssl.CertificateError can be either an alias of ssl.SSLCertVerificationError or a subclass of it
* When verify_result is X509_V_ERR_HOSTNAME_MISMATCH, the error message is formatted with more information following the current approach in `match_hostname` ("hostname XXX doesn't match YYY...")
----------
_______________________________________
Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue28182>
_______________________________________
More information about the Python-bugs-list
mailing list