#! /usr/bin/python -E
# Authors: Rob Crittenden <rcritten@redhat.com>
#
# Copyright (C) 2007  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
#

import sys
from optparse import OptionParser
import ipa
import ipa.user
import ipa.ipaclient as ipaclient
import ipa.ipavalidate as ipavalidate
import ipa.config

import xmlrpclib
import kerberos
import ldap

def usage():
    print "ipa-usermod [-c|--gecos STRING] [-d|--directory STRING] [-f|--firstname STRING] [-l|--lastname STRING] user"
    sys.exit(1)

def parse_options():
    parser = OptionParser()
    parser.add_option("-c", "--gecos", dest="gecos",
                      help="Set the GECOS field")
    parser.add_option("-d", "--directory", dest="directory",
                      help="Set the User's home directory")
    parser.add_option("-f", "--firstname", dest="gn",
                      help="User's first name")
    parser.add_option("-l", "--lastname", dest="sn",
                      help="User's last name")
    parser.add_option("-s", "--shell", dest="shell",
                      help="Set user's login shell to shell")
    parser.add_option("-M", "--mailAddress", dest="mail",
                      help="Set uesr's e-mail address")
    parser.add_option("--usage", action="store_true",
                      help="Program usage")

    args = ipa.config.init_config(sys.argv)
    options, args = parser.parse_args(args)

    return options, args

def main():
    # The following fields are required
    givenname = ""
    lastname = ""
    username = ""
    mail = ""
    gecos = ""
    directory = ""
    groups = ""
    shell = ""

    match = False
    cont = False

    options, args = parse_options()

    if len(args) != 2:
        usage()

    username = args[1]

    client = ipaclient.IPAClient()
    try:
        user = client.get_user_by_uid(username)
    except ipa.ipaerror.exception_for(ipa.ipaerror.LDAP_NOT_FOUND):
        print "User %s not found" % username
        return 1
    except ipa.ipaerror.IPAError, e:
        print "%s" % e.message
        return 1
    except kerberos.GSSError, e:
        print "Could not initialize GSSAPI: %s/%s" % (e[0][0][0], e[0][1][0])
        return 1

    # If any options are set we use just those. Otherwise ask for all of them.
    if options.gn or options.sn or options.directory or options.gecos or options.mail:
        givenname = options.gn
        lastname = options.sn
        gecos = options.gecos
        directory = options.directory
        mail = options.mail
    else:
        if not options.gn:
            while (cont != True):
                givenname = raw_input("First name: [%s] " % user.getValue('givenname'))
                if (ipavalidate.plain(givenname, notEmpty=False)):
                    print "Must be letters or '"
                else:
                    cont = True
                if len(givenname) < 1:
                    shell = None
                    cont = True
        else:
            givenname = options.gn
            if (ipavalidate.plain(givenname, notEmpty=True)):
                print "First name must be letters or '"
                return 1

        cont = False
        if not options.sn:
            while (cont != True):
                lastname = raw_input(" Last name: [%s] " % user.getValue('sn'))
                if (ipavalidate.plain(lastname, notEmpty=False)):
                    print "Must be letters or '"
                else:
                    cont = True
                if len(lastname) < 1:
                    shell = None
                    cont = True
        else:
            lastname = options.sn
            if (ipavalidate.plain(lastname, notEmpty=True)):
                print "Last name must be letters or '"
                return 1

        cont = False
        if not options.mail:
            while (cont != True):
                mail = raw_input("E-mail addr: [%s]" % user.getValue('mail'))
                if (ipavalidate.email(mail, notEmpty=False)):
                    print "Must include a user and domain name"
                else:
                    cont = True
        else:
            mail = options.mail
            if (ipavalidate.email(mail)):
                print "E-mail must include a user and domain name"
                return 1

        # Ask the questions we don't normally force. We don't require answers
        # for these.
        cont = False
        if not options.gecos:
            while (cont != True):
                gecos = raw_input("gecos: [%s] " % user.getValue('gecos'))
                if (ipavalidate.plain(gecos, notEmpty=False)):
                    print "Must be letters, numbers, spaces or '"
                else:
                    cont = True
        cont = False
        if not options.directory:
            while (cont != True):
                directory = raw_input("home directory: [%s] " % user.getValue('homeDirectory'))
                if (ipavalidate.path(gecos, notEmpty=False)):
                    print "Must be letters, numbers, spaces or '"
                else:
                    cont = True
        cont = False
        if not options.shell:
            while (cont != True):
                shell = raw_input("shell: [%s] " % user.getValue('loginshell'))
              
                if len(shell) < 1:
                    shell = None
                    cont = True
        cont = False

    if givenname:
        user.setValue('givenname', givenname)
    if lastname:
        user.setValue('sn', lastname)
    if mail:
        user.setValue('mail', mail)
    user.setValue('cn', "%s %s" % (user.getValue('givenname'),
                                   user.getValue('sn')))

    if gecos:
        user.setValue('gecos', gecos)
    if directory:
        user.setValue('homedirectory', directory)
    if shell:
        user.setValue('loginshell', shell)

    try:
        client.update_user(user)
    except xmlrpclib.Fault, f:
        print f.faultString
        return 1
    except kerberos.GSSError, e:
        print "Could not initialize GSSAPI: %s/%s" % (e[0][0][0], e[0][1][0])
        return 1
    except xmlrpclib.ProtocolError, e:
        print "Unable to connect to IPA server: %s" % (e.errmsg)
        return 1
    except ipa.ipaerror.IPAError, e:
        print "%s" % (e.message)
        return 1

    print username + " successfully updated"
    return 0

main()