x509: remove the strip_header() function

We don't need the strip_header() function, to load an unknown
x509 certificate, load_unknown_x509_certificate() should be used.

Reviewed-By: Tibor Dudlak <tdudlak@redhat.com>
Reviewed-By: Rob Crittenden <rcritten@redhat.com>

ipaclient/plugins/cert.py

@@ -206,6 +206,7 @@ class cert_find(MethodOverride):
                 raise errors.MutuallyExclusiveError(
                     reason=_("cannot specify both raw certificate and file"))
             if 'certificate' not in options and 'file' in options:
-                options['certificate'] = x509.strip_header(options.pop('file'))
+                options['certificate'] = x509.load_unknown_x509_certificate(
+                                            options.pop('file'))
 
         return super(cert_find, self).forward(*args, **options)

ipaclient/plugins/certmap.py

@@ -40,7 +40,7 @@ class certmap_match(MethodOverride):
                 raise errors.MutuallyExclusiveError(
                     reason=_("cannot specify both raw certificate and file"))
             if args:
-                args = [x509.strip_header(args[0])]
+                args = [x509.load_unknown_x509_certificate(args[0])]
             elif 'certificate' in options:
                 args = [options.pop('certificate')]
             else:

ipalib/x509.py

@@ -88,21 +88,6 @@ def subject_base():
 
     return _subject_base
 
-def strip_header(pem):
-    """
-    Remove the header and footer from a certificate.
-    """
-    regexp = (
-        u"^-----BEGIN CERTIFICATE-----(.*?)-----END CERTIFICATE-----"
-    )
-    if isinstance(pem, bytes):
-        regexp = regexp.encode('ascii')
-    s = re.search(regexp, pem, re.MULTILINE | re.DOTALL)
-    if s is not None:
-        return s.group(1)
-    else:
-        return pem
-
 
 @crypto_utils.register_interface(crypto_x509.Certificate)
 class IPACertificate(object):

ipatests/test_integration/test_caless.py

@@ -21,7 +21,6 @@ import logging
 import os
 import tempfile
 import shutil
-import base64
 import glob
 import contextlib
 import nose
@@ -360,10 +359,9 @@ class CALessBase(IntegrationTest):
             expected_cacrt = f.read()
         logger.debug('Expected /etc/ipa/ca.crt contents:\n%s',
                      expected_cacrt)
-        expected_binary_cacrt = base64.b64decode(x509.strip_header(
-            expected_cacrt))
+        expected_cacrt = x509.load_unknown_x509_certificate(expected_cacrt)
         logger.debug('Expected binary CA cert:\n%r',
-                     expected_binary_cacrt)
+                     expected_cacrt)
         for host in [self.master] + self.replicas:
             # Check the LDAP entry
             ldap = host.ldap_connect()
@@ -373,7 +371,7 @@ class CALessBase(IntegrationTest):
             cert_from_ldap = entry.single_value['cACertificate']
             logger.debug('CA cert from LDAP on %s:\n%r',
                          host, cert_from_ldap)
-            assert cert_from_ldap == expected_binary_cacrt
+            assert cert_from_ldap == expected_cacrt
 
             # Verify certmonger was not started
             result = host.run_command(['getcert', 'list'], raiseonerr=False)
@@ -384,10 +382,10 @@ class CALessBase(IntegrationTest):
             remote_cacrt = host.get_file_contents(paths.IPA_CA_CRT)
             logger.debug('%s:/etc/ipa/ca.crt contents:\n%s',
                          host, remote_cacrt)
-            binary_cacrt = base64.b64decode(x509.strip_header(remote_cacrt))
+            cacrt = x509.load_unknown_x509_certificate(remote_cacrt)
             logger.debug('%s: Decoded /etc/ipa/ca.crt:\n%r',
-                         host, binary_cacrt)
-            assert expected_binary_cacrt == binary_cacrt
+                         host, cacrt)
+            assert expected_cacrt == cacrt
 
 
 class TestServerInstall(CALessBase):

ipatests/test_xmlrpc/testcert.py

@@ -30,6 +30,7 @@ import tempfile
 import shutil
 import six
 import base64
+import re
 
 from ipalib import api, x509
 from ipaserver.plugins import rabase
@@ -40,6 +41,20 @@ if six.PY3:
     unicode = str
 
 
+def strip_cert_header(pem):
+    """
+    Remove the header and footer from a certificate.
+    """
+    regexp = (
+        r"^-----BEGIN CERTIFICATE-----(.*?)-----END CERTIFICATE-----"
+    )
+    s = re.search(regexp, pem, re.MULTILINE | re.DOTALL)
+    if s is not None:
+        return s.group(1)
+    else:
+        return pem
+
+
 def get_testcert(subject, principal):
     """Get the certificate, creating it if it doesn't exist"""
     reqdir = tempfile.mkdtemp(prefix="tmp-")
@@ -48,7 +63,7 @@ def get_testcert(subject, principal):
                              principal)
     finally:
         shutil.rmtree(reqdir)
-    return x509.strip_header(_testcert)
+    return strip_cert_header(_testcert.decode('utf-8'))
 
 
 def run_certutil(reqdir, args, stdin=None):
@@ -99,4 +114,4 @@ def makecert(reqdir, subject, principal):
     res = api.Command['cert_request'](csr, principal=principal, add=True)
     cert = x509.load_der_x509_certificate(
         base64.b64decode(res['result']['certificate']))
-    return cert.public_bytes(x509.Encoding.PEM).decode('utf-8')
+    return cert.public_bytes(x509.Encoding.PEM)