#!/usr/bin/python

import sys
import crypt
import base64
import grp
import pwd

ldif_add = """dn: cn=%(name)s,ou=users,dc=zotac,dc=lctp
gidNumber: %(gid)s
cn: %(name)s
homeDirectory: /home/%(name)s
objectClass: inetOrgPerson
objectClass: posixAccount
objectClass: shadowAccount
uidNumber: %(uid)s
loginShell: /bin/bash
uid: %(name)s
userPassword: {CRYPT}%(password)s
sn: %(name)s"""

ldif_group = """dn: cn=%(name)s,ou=groups,dc=zotac,dc=lctp
objectClass: top
objectClass: posixGroup
gidNumber: %(gid)s
cn: %(name)s"""

if len(sys.argv) < 2:
    print("Usage: %s <users-file>" % sys.argv[0], file=sys.stderr)
    exit(1)

users = [pw.pw_name for pw in pwd.getpwall()]
groups = [gr.gr_name for gr in grp.getgrall()]

last_uid = max([user.pw_uid for user in pwd.getpwall()])
last_gid = max([user.gr_gid for user in grp.getgrall()])

for line in open(sys.argv[1]).readlines():
    line = line.strip()
    user, password = line.split(maxsplit=1)

    if user in users:
        print("Skipping user %s (multiple occurences or user already existing)" % user, file=sys.stderr)
        continue
    if user in groups:
        print("Skipping group %s (multiple occurences or group already existing)" % user, file=sys.stderr)
        continue

    users.append(user)
    groups.append(user)

    print(ldif_add % {
        "name": user,
        "password": crypt.crypt(password),
        "uid": last_uid + 1,
        "gid": last_gid + 1
        } + "\n")
    print(ldif_group % {
        "name": user,
        "gid": last_gid + 1
        } + "\n")

    last_uid += 1
    last_gid += 1