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#!/usr/bin/env 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; version 2 only
#
# 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#

# Documentation can be found at http://freeipa.org/page/LdapUpdate

# TODO
# save undo files?

import sys
try:
    from optparse import OptionParser
    from ipaserver import ipaldap
    from ipapython import entity, ipautil, config
    from ipaserver.install import installutils
    from ipaserver.install.ldapupdate import LDAPUpdate, BadSyntax, UPDATES_DIR
    import ldap
    import logging
    import re
    import krbV
    import platform
    import shlex
    import time
    import random
except ImportError:
    print >> sys.stderr, """\
There was a problem importing one of the required Python modules. The
error was:

    %s
""" % sys.exc_value
    sys.exit(1)

def parse_options():
    usage = "%prog [options] input_file(s)\n"
    usage += "%prog [options]\n"
    parser = OptionParser(usage=usage, formatter=config.IPAFormatter())

    parser.add_option("-d", "--debug", action="store_true", dest="debug",
                      help="Display debugging information about the update(s)")
    parser.add_option("-t", "--test", action="store_true", dest="test",
                      help="Run through the update without changing anything")
    parser.add_option("-y", dest="password",
                      help="File containing the Directory Manager password")

    config.add_standard_options(parser)
    options, args = parser.parse_args()

    config.init_config(options)

    return options, args

def get_dirman_password():
    """Prompt the user for the Directory Manager password and verify its
       correctness.
    """
    password = installutils.read_password("Directory Manager", confirm=False, validate=False)

    return password

def main():
    loglevel = logging.INFO

    options, args = parse_options()
    if options.debug:
        loglevel = logging.DEBUG

    logging.basicConfig(level=loglevel,
                        format='%(levelname)s %(message)s')

    dirman_password = ""
    if options.password:
        pw = ipautil.template_file(options.password, [])
        dirman_password = pw.strip()
    else:
        dirman_password = get_dirman_password()

    ld = LDAPUpdate(dm_password=dirman_password, sub_dict={}, live_run=not options.test)

    files=[]
    if len(args) < 1:
        files = ld.get_all_files(UPDATES_DIR)
    else:
        files = args

    modified = ld.update(files)

    if modified and options.test:
        return 2
    else:
        return 0

try:
    if __name__ == "__main__":
        sys.exit(main())
except BadSyntax, e:
    print "There is a syntax error in this update file:"
    print "  %s" % e
    sys.exit(1)
except RuntimeError, e:
    print "%s" % e
    sys.exit(1)
except SystemExit, e:
    sys.exit(e)
except KeyboardInterrupt, e:
    sys.exit(1)
except config.IPAConfigError, e:
    print "An IPA server to update cannot be found. Has one been configured yet?"
    print "The error was: %s" % e
    sys.exit(1)