tests python krb5: Add constants module

Extract the constants used in the tests into a separate module.
To reduce code duplication

Signed-off-by: Gary Lockyer <gary@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>

python/samba/tests/krb5/rfc4120_constants.py

@@ -0,0 +1,49 @@
+# Unix SMB/CIFS implementation.
+# Copyright (C) 2020 Catalyst.Net Ltd
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+
+import samba.tests.krb5.rfc4120_pyasn1 as krb5_asn1
+
+# Encryption types
+AES256_CTS_HMAC_SHA1_96 = int(
+    krb5_asn1.EncryptionTypeValues('kRB5-ENCTYPE-AES256-CTS-HMAC-SHA1-96'))
+AES128_CTS_HMAC_SHA1_96 = int(
+    krb5_asn1.EncryptionTypeValues('kRB5-ENCTYPE-AES128-CTS-HMAC-SHA1-96'))
+ARCFOUR_HMAC_MD5 = int(
+    krb5_asn1.EncryptionTypeValues('kRB5-ENCTYPE-ARCFOUR-HMAC-MD5'))
+
+# Message types
+KRB_ERROR = int(krb5_asn1.MessageTypeValues('krb-error'))
+KRB_AS_REP = int(krb5_asn1.MessageTypeValues('krb-as-rep'))
+
+# PAData types
+PADATA_ENC_TIMESTAMP = int(
+    krb5_asn1.PADataTypeValues('kRB5-PADATA-ENC-TIMESTAMP'))
+PADATA_ETYPE_INFO2 = int(
+    krb5_asn1.PADataTypeValues('kRB5-PADATA-ETYPE-INFO2'))
+
+# Error codes
+KDC_ERR_C_PRINCIPAL_UNKNOWN = 6
+KDC_ERR_PREAUTH_FAILED      = 24
+KDC_ERR_PREAUTH_REQUIRED    = 25
+KDC_ERR_SKEW                = 37
+
+# Name types
+NT_UNKNOWN   = int(krb5_asn1.NameTypeValues('kRB5-NT-UNKNOWN'))
+NT_PRINCIPAL = int(krb5_asn1.NameTypeValues('kRB5-NT-PRINCIPAL'))
+NT_SRV_INST  = int(krb5_asn1.NameTypeValues('kRB5-NT-SRV-INST'))
+NT_ENTERPRISE_PRINCIPAL = int(krb5_asn1.NameTypeValues(
+    'kRB5-NT-ENTERPRISE-PRINCIPAL'))

python/samba/tests/usage.py

@@ -91,6 +91,7 @@ EXCLUDE_USAGE = {
     'python/samba/tests/krb5/xrealm_tests.py',
     'python/samba/tests/krb5/as_canonicalization_tests.py',
     'python/samba/tests/krb5/compatability_tests.py',
+    'python/samba/tests/krb5/rfc4120_constants.py',
 }
 
 EXCLUDE_HELP = {