freeipa/ipalib/plugins/passwd.py
Rob Crittenden bd227b3562 Require current password when using passwd to change your own password.
Add a new required parameter, current_password. In order to ask this
first I added a new parameter option, sortorder. The lower the value the
earlier it will be prompted for.

I also changed the way autofill works. It will attempt to get the default
and if it doesn't get anything will continue prompting interactively.

Since current_password is required I'm passing a magic value that
means changing someone else's password. We need to pass something
since current_password is required.

The python-ldap passwd command doesn't seem to use the old password at
all so I do a simple bind to validate it.

https://fedorahosted.org/freeipa/ticket/1808
2011-10-04 15:16:15 +02:00

127 lines
4.1 KiB
Python

# Authors:
# Rob Crittenden <rcritten@redhat.com>
#
# Copyright (C) 2008 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, errors, util
from ipalib import Command
from ipalib import Str, Password
from ipalib import _
from ipalib import output
from ipalib.plugins.user import split_principal, validate_principal, normalize_principal
from ipalib.request import context
__doc__ = _("""
Set a user's password
If someone other than a user changes that user's password (e.g., Helpdesk
resets it) then the password will need to be changed the first time it
is used. This is so the end-user is the only one who knows the password.
The IPA password policy controls how often a password may be changed,
what strength requirements exist, and the length of the password history.
EXAMPLES:
To reset your own password:
ipa passwd
To change another user's password:
ipa passwd tuser1
""")
# We only need to prompt for the current password when changing a password
# for yourself, but the parameter is still required
MAGIC_VALUE = u'CHANGING_PASSWORD_FOR_ANOTHER_USER'
def get_current_password(principal):
"""
If the user is changing their own password then return None so the
current password is prompted for, otherwise return a fixed value to
be ignored later.
"""
current_principal = util.get_current_principal()
if current_principal == normalize_principal(principal):
return None
else:
return MAGIC_VALUE
class passwd(Command):
__doc__ = _("Set a user's password.")
takes_args = (
Str('principal', validate_principal,
cli_name='user',
label=_('User name'),
primary_key=True,
autofill=True,
create_default=lambda **kw: util.get_current_principal(),
normalizer=lambda value: normalize_principal(value),
),
Password('password',
label=_('New Password'),
),
Password('current_password',
label=_('Current Password'),
confirm=False,
default_from=lambda principal: get_current_password(principal),
autofill=True,
sortorder=-1,
),
)
has_output = output.standard_value
msg_summary = _('Changed password for "%(value)s"')
def execute(self, principal, password, current_password):
"""
Execute the passwd operation.
The dn should not be passed as a keyword argument as it is constructed
by this method.
Returns the entry
:param principal: The login name or principal of the user
:param password: the new password
:param current_password: the existing password, if applicable
"""
ldap = self.api.Backend.ldap2
(dn, entry_attrs) = ldap.find_entry_by_attr(
'krbprincipalname', principal, 'posixaccount', [''],
",".join([api.env.container_user, api.env.basedn])
)
if principal == getattr(context, 'principal') and \
current_password == MAGIC_VALUE:
# No cheating
self.log.warn('User attempted to change password using magic value')
raise errors.ACIError(info='Invalid credentials')
if current_password == MAGIC_VALUE:
ldap.modify_password(dn, password)
else:
ldap.modify_password(dn, password, current_password)
return dict(
result=True,
value=principal,
)
api.register(passwd)