/usr/share/pyshared/ipalib/plugins/pwpolicy.py is in python-freeipa 2.1.4-0ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 | # Authors:
# Pavel Zuna <pzuna@redhat.com>
# Martin Kosek <mkosek@redhat.com>
#
# Copyright (C) 2010 Red Hat
# see file 'COPYING' for use and warranty information
#
# 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/>.
from ipalib import api
from ipalib import Int, Str
from ipalib.plugins.baseldap import *
from ipalib import _
from ipalib.request import context
from ipapython.ipautil import run
from distutils import version
__doc__ = _("""
Password policy
A password policy sets limitations on IPA passwords, including maximum
lifetime, minimum lifetime, the number of passwords to save in
history, the number of character classes required (for stronger passwords)
and the minimum password length.
By default there is a single, global policy for all users. You can also
create a password policy to apply to a group. Each user is only subject
to one password policy, either the group policy or the global policy. A
group policy stands alone; it is not a super-set of the global policy plus
custom settings.
Each group password policy requires a unique priority setting. If a user
is in multiple groups that have password policies, this priority determines
which password policy is applied. A lower value indicates a higher priority
policy.
Group password policies are automatically removed when the groups they
are associated with are removed.
EXAMPLES:
Modify the global policy:
ipa pwpolicy-mod --minlength=10
Add a new group password policy:
ipa pwpolicy-add --maxlife=90 --minlife=1 --history=10 --minclasses=3 --minlength=8 --priority=10 localadmins
Display the global password policy:
ipa pwpolicy-show
Display a group password policy:
ipa pwpolicy-show localadmins
Display the policy that would be applied to a given user:
ipa pwpolicy-show --user=tuser1
Modify a group password policy:
ipa pwpolicy-mod --minclasses=2 localadmins
""")
class cosentry(LDAPObject):
"""
Class of Service object used for linking policies with groups
"""
NO_CLI = True
container_dn = 'cn=costemplates,%s' % api.env.container_accounts
object_class = ['top', 'costemplate', 'extensibleobject', 'krbcontainer']
default_attributes = ['cn', 'cospriority', 'krbpwdpolicyreference']
takes_params = (
Str('cn', primary_key=True),
Str('krbpwdpolicyreference'),
Int('cospriority', minvalue=0),
)
priority_not_unique_msg = _(
'priority must be a unique value (%(prio)d already used by %(gname)s)'
)
def get_dn(self, *keys, **options):
group_dn = self.api.Object.group.get_dn(keys[-1])
return self.backend.make_dn_from_attr(
'cn', group_dn, self.container_dn
)
def check_priority_uniqueness(self, *keys, **options):
if options.get('cospriority') is not None:
entries = self.methods.find(
cospriority=options['cospriority']
)['result']
if len(entries) > 0:
group_name = self.api.Object.group.get_primary_key_from_dn(
entries[0]['cn'][0]
)
raise errors.ValidationError(
name='priority',
error=self.priority_not_unique_msg % {
'prio': options['cospriority'],
'gname': group_name,
}
)
api.register(cosentry)
class cosentry_add(LDAPCreate):
NO_CLI = True
def pre_callback(self, ldap, dn, entry_attrs, attrs_list, *keys, **options):
# check for existence of the group
result = self.api.Command.group_show(keys[-1], all=True)['result']
oc = map(lambda x:x.lower(),result['objectclass'])
if 'mepmanagedentry' in oc:
raise errors.ManagedPolicyError()
self.obj.check_priority_uniqueness(*keys, **options)
del entry_attrs['cn']
return dn
api.register(cosentry_add)
class cosentry_del(LDAPDelete):
NO_CLI = True
api.register(cosentry_del)
class cosentry_mod(LDAPUpdate):
NO_CLI = True
def pre_callback(self, ldap, dn, entry_attrs, attrs_list, *keys, **options):
new_cospriority = options.get('cospriority')
if new_cospriority is not None:
cos_entry = self.api.Command.cosentry_show(keys[-1])['result']
old_cospriority = int(cos_entry['cospriority'][0])
# check uniqueness only when the new priority differs
if old_cospriority != new_cospriority:
self.obj.check_priority_uniqueness(*keys, **options)
return dn
api.register(cosentry_mod)
class cosentry_show(LDAPRetrieve):
NO_CLI = True
api.register(cosentry_show)
class cosentry_find(LDAPSearch):
NO_CLI = True
api.register(cosentry_find)
global_policy_name = 'global_policy'
global_policy_dn = 'cn=%s,cn=%s,cn=kerberos,%s' % (global_policy_name, api.env.realm, api.env.basedn)
class pwpolicy(LDAPObject):
"""
Password Policy object
"""
container_dn = 'cn=%s,cn=kerberos' % api.env.realm
object_name = _('password policy')
object_name_plural = _('password policies')
object_class = ['top', 'nscontainer', 'krbpwdpolicy']
default_attributes = [
'cn', 'cospriority', 'krbmaxpwdlife', 'krbminpwdlife',
'krbpwdhistorylength', 'krbpwdmindiffchars', 'krbpwdminlength',
'krbpwdmaxfailure', 'krbpwdfailurecountinterval',
'krbpwdlockoutduration',
]
MIN_KRB5KDC_WITH_LOCKOUT = "1.8"
has_lockout = False
lockout_params = ()
(stdout, stderr, rc) = run(['klist', '-V'], raiseonerr=False)
if rc == 0:
verstr = stdout.split()[-1]
ver = version.LooseVersion(verstr)
min = version.LooseVersion(MIN_KRB5KDC_WITH_LOCKOUT)
if ver >= min:
has_lockout = True
if has_lockout:
lockout_params = (
Int('krbpwdmaxfailure?',
cli_name='maxfail',
label=_('Max failures'),
doc=_('Consecutive failures before lockout'),
minvalue=0,
),
Int('krbpwdfailurecountinterval?',
cli_name='failinterval',
label=_('Failure reset interval'),
doc=_('Period after which failure count will be reset (seconds)'),
minvalue=0,
),
Int('krbpwdlockoutduration?',
cli_name='lockouttime',
label=_('Lockout duration'),
doc=_('Period for which lockout is enforced (seconds)'),
minvalue=0,
),
)
label = _('Password Policies')
label_singular = _('Password Policy')
takes_params = (
Str('cn?',
cli_name='group',
label=_('Group'),
doc=_('Manage password policy for specific group'),
primary_key=True,
),
Int('krbmaxpwdlife?',
cli_name='maxlife',
label=_('Max lifetime (days)'),
doc=_('Maximum password lifetime (in days)'),
minvalue=0,
),
Int('krbminpwdlife?',
cli_name='minlife',
label=_('Min lifetime (hours)'),
doc=_('Minimum password lifetime (in hours)'),
minvalue=0,
),
Int('krbpwdhistorylength?',
cli_name='history',
label=_('History size'),
doc=_('Password history size'),
minvalue=0,
),
Int('krbpwdmindiffchars?',
cli_name='minclasses',
label=_('Character classes'),
doc=_('Minimum number of character classes'),
minvalue=0,
maxvalue=5,
),
Int('krbpwdminlength?',
cli_name='minlength',
label=_('Min length'),
doc=_('Minimum length of password'),
minvalue=0,
),
Int('cospriority',
cli_name='priority',
label=_('Priority'),
doc=_('Priority of the policy (higher number means lower priority'),
minvalue=0,
),
) + lockout_params
def get_dn(self, *keys, **options):
if keys[-1] is not None:
return self.backend.make_dn_from_attr(
self.primary_key.name, keys[-1], self.container_dn
)
return global_policy_dn
def convert_time_for_output(self, entry_attrs, **options):
# Convert seconds to hours and days for displaying to user
if not options.get('raw', False):
if 'krbmaxpwdlife' in entry_attrs:
entry_attrs['krbmaxpwdlife'][0] = unicode(
int(entry_attrs['krbmaxpwdlife'][0]) / 86400
)
if 'krbminpwdlife' in entry_attrs:
entry_attrs['krbminpwdlife'][0] = unicode(
int(entry_attrs['krbminpwdlife'][0]) / 3600
)
def convert_time_on_input(self, entry_attrs):
# Convert hours and days to seconds for writing to LDAP
if 'krbmaxpwdlife' in entry_attrs and entry_attrs['krbmaxpwdlife']:
entry_attrs['krbmaxpwdlife'] = entry_attrs['krbmaxpwdlife'] * 86400
if 'krbminpwdlife' in entry_attrs and entry_attrs['krbminpwdlife']:
entry_attrs['krbminpwdlife'] = entry_attrs['krbminpwdlife'] * 3600
def validate_lifetime(self, entry_attrs, add=False, *keys):
"""
Ensure that the maximum lifetime is greater than the minimum.
If there is no minimum lifetime set then don't return an error.
"""
maxlife=entry_attrs.get('krbmaxpwdlife', None)
minlife=entry_attrs.get('krbminpwdlife', None)
existing_entry = {}
if not add: # then read existing entry
existing_entry = self.api.Command.pwpolicy_show(keys[-1],
all=True, raw=True,
)['result']
if minlife is None and 'krbminpwdlife' in existing_entry:
minlife = int(existing_entry['krbminpwdlife'][0])
if maxlife is None and 'krbmaxpwdlife' in existing_entry:
maxlife = int(existing_entry['krbmaxpwdlife'][0])
if maxlife is not None and minlife is not None:
if minlife > maxlife:
raise errors.ValidationError(
name='maxlife',
error=_('Maximum password life must be greater than minimum.'),
)
def add_cospriority(self, entry, pwpolicy_name, rights=True):
if pwpolicy_name and pwpolicy_name != global_policy_name:
cos_entry = self.api.Command.cosentry_show(
pwpolicy_name,
rights=rights, all=rights
)['result']
if cos_entry.get('cospriority') is not None:
entry['cospriority'] = cos_entry['cospriority']
if rights:
entry['attributelevelrights']['cospriority'] = \
cos_entry['attributelevelrights']['cospriority']
api.register(pwpolicy)
class pwpolicy_add(LDAPCreate):
__doc__ = _('Add a new group password policy.')
def get_args(self):
yield self.obj.primary_key.clone(attribute=True, required=True)
def pre_callback(self, ldap, dn, entry_attrs, attrs_list, *keys, **options):
self.obj.convert_time_on_input(entry_attrs)
self.obj.validate_lifetime(entry_attrs, True)
self.api.Command.cosentry_add(
keys[-1], krbpwdpolicyreference=dn,
cospriority=options.get('cospriority')
)
if 'cospriority' in entry_attrs:
del entry_attrs['cospriority']
return dn
def post_callback(self, ldap, dn, entry_attrs, *keys, **options):
self.log.info('%r' % entry_attrs)
# attribute rights are not allowed for pwpolicy_add
self.obj.add_cospriority(entry_attrs, keys[-1], rights=False)
self.obj.convert_time_for_output(entry_attrs, **options)
return dn
api.register(pwpolicy_add)
class pwpolicy_del(LDAPDelete):
__doc__ = _('Delete a group password policy.')
def get_args(self):
yield self.obj.primary_key.clone(
attribute=True, required=True, multivalue=True
)
def pre_callback(self, ldap, dn, *keys, **options):
if dn.lower() == global_policy_dn.lower():
raise errors.ValidationError(
name='group',
error=_('cannot delete global password policy')
)
return dn
def post_callback(self, ldap, dn, *keys, **options):
try:
self.api.Command.cosentry_del(keys[-1])
except errors.NotFound:
pass
return True
api.register(pwpolicy_del)
class pwpolicy_mod(LDAPUpdate):
__doc__ = _('Modify a group password policy.')
def pre_callback(self, ldap, dn, entry_attrs, attrs_list, *keys, **options):
self.obj.convert_time_on_input(entry_attrs)
self.obj.validate_lifetime(entry_attrs, False, *keys)
setattr(context, 'cosupdate', False)
if options.get('cospriority') is not None:
if keys[-1] is None:
raise errors.ValidationError(
name='priority',
error=_('priority cannot be set on global policy')
)
try:
self.api.Command.cosentry_mod(
keys[-1], cospriority=options['cospriority']
)
except errors.EmptyModlist, e:
if len(entry_attrs) == 1: # cospriority only was passed
raise e
else:
setattr(context, 'cosupdate', True)
del entry_attrs['cospriority']
return dn
def post_callback(self, ldap, dn, entry_attrs, *keys, **options):
rights = options.get('all', False) and options.get('rights', False)
self.obj.add_cospriority(entry_attrs, keys[-1], rights)
self.obj.convert_time_for_output(entry_attrs, **options)
return dn
def exc_callback(self, keys, options, exc, call_func, *call_args, **call_kwargs):
if isinstance(exc, errors.EmptyModlist):
entry_attrs = call_args[1]
cosupdate = getattr(context, 'cosupdate')
if not entry_attrs or cosupdate:
return
raise exc
api.register(pwpolicy_mod)
class pwpolicy_show(LDAPRetrieve):
__doc__ = _('Display information about password policy.')
takes_options = LDAPRetrieve.takes_options + (
Str('user?',
label=_('User'),
doc=_('Display effective policy for a specific user'),
),
)
def pre_callback(self, ldap, dn, attrs_list, *keys, **options):
if options.get('user') is not None:
user_entry = self.api.Command.user_show(
options['user'], all=True
)['result']
if 'krbpwdpolicyreference' in user_entry:
return user_entry.get('krbpwdpolicyreference', [dn])[0]
return dn
def post_callback(self, ldap, dn, entry_attrs, *keys, **options):
rights = options.get('all', False) and options.get('rights', False)
self.obj.add_cospriority(entry_attrs, keys[-1], rights)
self.obj.convert_time_for_output(entry_attrs, **options)
return dn
api.register(pwpolicy_show)
class pwpolicy_find(LDAPSearch):
__doc__ = _('Search for group password policies.')
def post_callback(self, ldap, entries, truncated, *args, **options):
for e in entries:
# attribute rights are not allowed for pwpolicy_find
self.obj.add_cospriority(e[1], e[1]['cn'][0], rights=False)
self.obj.convert_time_for_output(e[1], **options)
api.register(pwpolicy_find)
|