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From a85f64d2c4fa2718748a205d4ae0ebab47513199 Mon Sep 17 00:00:00 2001
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From: Mark Reynolds <mreynolds@redhat.com>
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Date: Mon, 8 Jan 2018 11:34:02 -0500
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Subject: [PATCH] Ticket 49524 - Password policy: minimum token length fails
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when the token length is equal to attribute length
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Bug Description: The token checking breaks when the password is the
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exact value of the entry attribute.
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Fix Description: Remove the "equal" part of the string comparisons.
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https://pagure.io/389-ds-base/issue/49524
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Reviewed by: firstyear & spichugi(Thanks!!)
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(cherry picked from commit 790be09fc434d394239bf2486d01f212b36cf0e3)
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---
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.../tests/suites/password/pwdPolicy_token_test.py | 75 ++++++++++++++++++++++
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ldap/servers/slapd/pw.c | 2 +-
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ldap/servers/slapd/utf8.c | 2 +-
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3 files changed, 77 insertions(+), 2 deletions(-)
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create mode 100644 dirsrvtests/tests/suites/password/pwdPolicy_token_test.py
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diff --git a/dirsrvtests/tests/suites/password/pwdPolicy_token_test.py b/dirsrvtests/tests/suites/password/pwdPolicy_token_test.py
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new file mode 100644
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index 000000000..7a4de9c85
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--- /dev/null
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+++ b/dirsrvtests/tests/suites/password/pwdPolicy_token_test.py
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@@ -0,0 +1,75 @@
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+import logging
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+import pytest
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+import os
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+import time
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+import ldap
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+from lib389._constants import *
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+from lib389.idm.user import UserAccounts
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+from lib389.topologies import topology_st as topo
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+
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+DEBUGGING = os.getenv("DEBUGGING", default=False)
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+if DEBUGGING:
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+ logging.getLogger(__name__).setLevel(logging.DEBUG)
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+else:
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+ logging.getLogger(__name__).setLevel(logging.INFO)
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+log = logging.getLogger(__name__)
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+
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+USER_DN = 'uid=Test_user1,ou=People,dc=example,dc=com'
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+TOKEN = 'test_user1'
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+
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+user_properties = {
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+ 'uid': 'Test_user1',
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+ 'cn': 'test_user1',
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+ 'sn': 'test_user1',
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+ 'uidNumber': '1001',
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+ 'gidNumber': '2001',
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+ 'userpassword': PASSWORD,
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+ 'description': 'userdesc',
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+ 'homeDirectory': '/home/{}'.format('test_user')}
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+
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+
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+def pwd_setup(topo):
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+ topo.standalone.config.replace_many(('passwordCheckSyntax', 'on'),
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+ ('passwordMinLength', '4'),
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+ ('passwordMinCategories', '1'))
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+ users = UserAccounts(topo.standalone, DEFAULT_SUFFIX)
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+ return users.create(properties=user_properties)
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+
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+
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+def test_token_lengths(topo):
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+ """Test that password token length is enforced for various lengths including
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+ the same length as the attribute being checked by the policy.
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+
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+ :id: dae9d916-2a03-4707-b454-9e901d295b13
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+ :setup: Standalone instance
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+ :steps:
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+ 1. Test token length rejects password of the same length as rdn value
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+ :expectedresults:
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+ 1. Passwords are rejected
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+ """
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+ user = pwd_setup(topo)
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+ for length in ['4', '6', '10']:
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+ topo.standalone.simple_bind_s(DN_DM, PASSWORD)
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+ topo.standalone.config.set('passwordMinTokenLength', length)
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+ topo.standalone.simple_bind_s(USER_DN, PASSWORD)
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+ time.sleep(1)
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+
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+ try:
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+ passwd = TOKEN[:int(length)]
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+ log.info("Testing password len {} token ({})".format(length, passwd))
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+ user.replace('userpassword', passwd)
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+ log.fatal('Password incorrectly allowed!')
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+ assert False
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+ except ldap.CONSTRAINT_VIOLATION as e:
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+ log.info('Password correctly rejected: ' + str(e))
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+ except ldap.LDAPError as e:
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+ log.fatal('Unexpected failure ' + str(e))
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+ assert False
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+
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+
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+if __name__ == '__main__':
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+ # Run isolated
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+ # -s for DEBUG mode
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+ CURRENT_FILE = os.path.realpath(__file__)
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+ pytest.main("-s %s" % CURRENT_FILE)
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+
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diff --git a/ldap/servers/slapd/pw.c b/ldap/servers/slapd/pw.c
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index e625962e8..0cf795b41 100644
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--- a/ldap/servers/slapd/pw.c
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+++ b/ldap/servers/slapd/pw.c
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@@ -1465,7 +1465,7 @@ check_trivial_words(Slapi_PBlock *pb, Slapi_Entry *e, Slapi_Value **vals, char *
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sp = slapi_ch_strdup(slapi_value_get_string(valp));
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ep = sp + strlen(sp);
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ep = ldap_utf8prevn(sp, ep, toklen);
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- if (!ep || (sp >= ep)) {
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+ if (!ep || (sp > ep)) {
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slapi_ch_free_string(&sp);
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continue;
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}
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diff --git a/ldap/servers/slapd/utf8.c b/ldap/servers/slapd/utf8.c
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index b0667c636..4538625b3 100644
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--- a/ldap/servers/slapd/utf8.c
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+++ b/ldap/servers/slapd/utf8.c
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@@ -152,7 +152,7 @@ ldap_utf8prevn(char *s, char *from, int n)
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}
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for (; n > 0; --n) {
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prev = ldap_utf8prev(prev);
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- if ((prev <= s) && (n > 0)) {
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+ if ((n > 0) && (prev < s)) {
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return NULL;
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}
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}
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--
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2.13.6
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