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# Copyright 2007 Google Inc.
#
# 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 2
# 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, write to the Free Software Foundation,
# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
"""An implementation of a passwd map for nsscache.
PasswdMap: An implementation of NSS passwd maps based on the Map
class.
PasswdMapEntry: A passwd map entry based on the MapEntry class.
"""
__author__ = "vasilios@google.com (Vasilios Hoffman)"
from nss_cache.maps import maps
class PasswdMap(maps.Map):
"""This class represents an NSS passwd map.
Map data is stored as a list of MapEntry objects, see the abstract
class Map.
"""
def Add(self, entry):
"""Add a new object, verify it is a PasswdMapEntry instance.
Args:
entry: A PasswdMapEntry instance.
Returns:
True if added successfully, False otherwise.
Raises:
TypeError: The argument is of the wrong type.
"""
if not isinstance(entry, PasswdMapEntry):
raise TypeError
return super(PasswdMap, self).Add(entry)
class PasswdMapEntry(maps.MapEntry):
"""This class represents NSS passwd map entries."""
# Using slots saves us over 2x memory on large maps.
__slots__ = ("name", "uid", "gid", "passwd", "gecos", "dir", "shell")
_KEY = "name"
_ATTRS = ("name", "uid", "gid", "passwd", "gecos", "dir", "shell")
def __init__(self, data=None):
"""Construct a PasswdMapEntry, setting reasonable defaults."""
self.name = None
self.uid = None
self.gid = None
self.passwd = None
self.gecos = None
self.dir = None
self.shell = None
super(PasswdMapEntry, self).__init__(data)
# Seed data with defaults if still empty
if self.passwd is None:
self.passwd = "x"
if self.gecos is None:
self.gecos = ""
if self.dir is None:
self.dir = ""
if self.shell is None:
self.shell = ""
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