106 lines
3.7 KiB
Python
106 lines
3.7 KiB
Python
# -*- coding: UTF-8 -*-
|
|
#
|
|
# Copyright (C) 2007 by Jan Dittberner.
|
|
#
|
|
# 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.
|
|
#
|
|
# Version: $Id$
|
|
|
|
import pwd, grp
|
|
|
|
class PasswdUser(object):
|
|
"""This class represents users in the user database."""
|
|
def __init__(self, username, pw, uid, gid, gecos, home, shell):
|
|
self.username = username
|
|
self.uid = int(uid)
|
|
self.gid = int(gid)
|
|
self.gecos = gecos
|
|
self.home = home
|
|
self.shell = shell
|
|
|
|
def __repr__(self):
|
|
return "%s(%s:%d:%d:%s:%s:%s)" % (self.__class__.__name__,
|
|
self.username,
|
|
self.uid,
|
|
self.gid,
|
|
self.gecos,
|
|
self.home,
|
|
self.shell)
|
|
|
|
class PasswdGroup(object):
|
|
"""This class represents lines in the groups database."""
|
|
def __init__(self, groupname, pw, gid, members):
|
|
self.groupname = groupname
|
|
self.gid = int(gid)
|
|
self.members = members
|
|
|
|
def __repr__(self):
|
|
return "%s(%s:%d:%s)" % (self.__class__.__name__,
|
|
self.groupname,
|
|
self.gid,
|
|
",".join(self.members))
|
|
|
|
def parse_groups():
|
|
return [PasswdGroup(*arr) for arr in grp.getgrall()]
|
|
|
|
def parse_users():
|
|
return [PasswdUser(*arr) for arr in pwd.getpwall()]
|
|
|
|
def find_user_by_prefix(prefix):
|
|
"""Finds all user entries with the given prefix."""
|
|
return [user for user in parse_users() if user.username.startswith(prefix)]
|
|
|
|
def get_user_by_id(uid):
|
|
"""Gets the user with the given user id."""
|
|
users = [user for user in parse_users() if user.uid == uid]
|
|
if users:
|
|
return users[0]
|
|
return None
|
|
|
|
def get_group_by_id(gid):
|
|
"""Gets the group with the given group id."""
|
|
groups = [group for group in parse_groups() if group.gid == gid]
|
|
if groups:
|
|
return groups[0]
|
|
return None
|
|
|
|
def get_next_uid(lowerboundary = 10000, upperboundary = 65536):
|
|
"""Gets the first available user id in the range between lowerboundary and
|
|
upper boundary."""
|
|
for uid in range(lowerboundary, upperboundary):
|
|
try:
|
|
user = pwd.getpwuid(uid)
|
|
except KeyError:
|
|
return uid
|
|
raise Exception("no free uid found in range %d to %d", lowerboundary, upperboundary)
|
|
|
|
def get_max_uid(boundary = 65536):
|
|
"""Gets the highest uid value."""
|
|
return max([user.uid for user in parse_users() if user.uid <= boundary])
|
|
|
|
def get_max_gid(boundary = 65536):
|
|
"""Gets the highest gid value."""
|
|
return max([group.gid for group in parse_groups() \
|
|
if group.gid <= boundary])
|
|
|
|
if __name__ == "__main__":
|
|
print "Max UID is %d" % (get_max_uid(40000))
|
|
print "Max GID is %d" % (get_max_gid(40000))
|
|
print "User with max UID is %s" % (get_user_by_id(get_max_uid(40000)))
|
|
print "Group with max GID is %s" % (get_group_by_id(get_max_gid(40000)))
|
|
print "First free UID is %s" % (get_next_uid(10000, 40000))
|
|
|