Use ssl.match_hostname from urllib3 as it was removed from Python 3.12

Based on upstream freeipa rawhide patch by Miro Hrončok

See python/cpython#94224 (comment)

Fixes: https://pagure.io/freeipa/issue/9409

Signed-off-by: Rob Crittenden <[email protected]>

Author: hroncok

ipalib/x509.py

@@ -36,7 +36,6 @@
 import datetime
 import enum
 import ipaddress
-import ssl
 import base64
 import re
 
@@ -53,6 +52,12 @@
 from pyasn1_modules import rfc2315, rfc2459
 import six
 
+from urllib3.util import ssl_match_hostname
+
+# make the CertificateError exception available via re-export
+# pylint: disable=unused-import
+from urllib3.util.ssl_match_hostname import CertificateError
+
 from ipalib import errors
 from ipapython.dnsutil import DNSName
 
@@ -385,6 +390,7 @@ def san_a_label_dns_names(self):
         return result
 
     def match_hostname(self, hostname):
+        # The caller is expected to catch any exceptions
         match_cert = {}
 
         match_cert['subject'] = match_subject = []
@@ -401,8 +407,7 @@ def match_hostname(self, hostname):
             for value in values:
                 match_san.append(('DNS', value))
 
-        # deprecated in Python3.7 without replacement
-        ssl.match_hostname(  # pylint: disable=deprecated-method
+        ssl_match_hostname.match_hostname(
             match_cert, DNSName(hostname).ToASCII()
         )
 

ipaserver/install/cainstance.py

@@ -30,7 +30,6 @@
 import os
 import re
 import shutil
-import ssl
 import sys
 import syslog
 import time
@@ -2378,7 +2377,7 @@ def check_ipa_ca_san(cert):
 
     try:
         cert.match_hostname(expect)
-    except ssl.CertificateError:
+    except x509.CertificateError:
         raise errors.ValidationError(
             name='certificate',
             error='Does not have a \'{}\' SAN'.format(expect)

ipaserver/install/server/upgrade.py

@@ -12,7 +12,6 @@
 import glob
 import shutil
 import fileinput
-import ssl
 import stat
 import sys
 import tempfile
@@ -717,7 +716,7 @@ def http_certificate_ensure_ipa_ca_dnsname(http):
 
     try:
         cert.match_hostname(expect)
-    except ssl.CertificateError:
+    except x509.CertificateError:
         if certs.is_ipa_issued_cert(api, cert):
             request_id = certmonger.get_request_id(
                 {'cert-file': paths.HTTPD_CERT_FILE})