#! /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
import errno

def usage():
    print "ipa-usermod [-a|--activate] [-c|--gecos STRING] [-d|--directory STRING] [-f|--firstname STRING] [-l|--lastname STRING] [-s|--shell STRING] [--add attribute=value] [--del attribute] [--set attribute=value] user"
    sys.exit(1)

def set_add_usage(which):
    print "%s option usage: --%s NAME=VALUE" % (which, which)

def parse_options():
    parser = OptionParser()
    parser.add_option("-a", "--activate", dest="activate", action="store_true",
                      help="Activate the user")
    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("--addattr", dest="addattr",
                      help="Adds an attribute or values to that attribute, attr=value",
                      action="append")
    parser.add_option("--delattr", dest="delattr",
                      help="Remove an attribute", action="append")
    parser.add_option("--setattr", dest="setattr",
                      help="Set an attribute, dropping any existing values that may exist",
                      action="append")
    parser.add_option("-M", "--mailAddress", dest="mail",
                      help="Set user'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:
        attrs = ['*']

        # in case any attributes being modified are operational such as
        # nsaccountlock. Any attribute to be deleted needs to be included
        # in the original record so it can be seen as being removed.
        if options.delattr:
            for d in options.delattr:
                attrs.append(d)
        user = client.get_user_by_uid(username, sattrs=attrs)
    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 or options.shell or options.addattr or options.delattr or options.setattr or options.activate:
        givenname = options.gn
        lastname = options.sn
        gecos = options.gecos
        directory = options.directory
        mail = options.mail
        shell = options.shell
    else:
        if not options.gn:
            while (cont != True):
                givenname = raw_input("First name: [%s] " % user.getValue('givenname'))
                if (ipavalidate.String(givenname, notEmpty=False)):
                    print "Please enter a value"
                else:
                    cont = True
                if len(givenname) < 1:
                    givenname = None
                    cont = True
        else:
            givenname = options.gn
            if (ipavalidate.String(givenname, notEmpty=True)):
                print "Please enter a value"
                return 1

        cont = False
        if not options.sn:
            while (cont != True):
                lastname = raw_input(" Last name: [%s] " % user.getValue('sn'))
                if (ipavalidate.String(lastname, notEmpty=False)):
                    print "Please enter a value"
                else:
                    cont = True
                if len(lastname) < 1:
                    lastname = None
                    cont = True
        else:
            lastname = options.sn
            if (ipavalidate.String(lastname, notEmpty=True)):
                print "Please enter a value"
                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 "E-mail 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.String(gecos, notEmpty=False)):
                    print "Please enter a value"
                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 "Valid path is required"
                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)

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

    if options.delattr:
        for d in options.delattr:
            user.delValue(d)

    if options.setattr:
        for s in options.setattr:
            s = s.split('=')
            if len(s) != 2:
                set_add_usage("set")
                sys.exit(1)
            (attr,value) = s   
            user.setValue(attr, value)

    if options.addattr:
        for a in options.addattr:
            a = a.split('=')
            if len(a) != 2:
                set_add_usage("add")
                sys.exit(1)
            (attr,value) = a      
            cvalue = user.getValue(attr)
            if cvalue:
                if isinstance(cvalue,str):
                    cvalue = [cvalue]
                value = cvalue + [value]
            user.setValue(attr, value)

    try:
        if options.activate:
            try:
                client.mark_user_active(user.getValues('uid'))
                print "User activated successfully."
            except ipa.ipaerror.exception_for(ipa.ipaerror.LDAP_EMPTY_MODLIST):
                print "User is already marked active"
                return 0
            except:
                raise
        client.update_user(user)
    except xmlrpclib.Fault, fault:
        if fault.faultCode == errno.ECONNREFUSED:
            print "The IPA XML-RPC service is not responding."
        else:
            print fault.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

if __name__ == "__main__":
    sys.exit(main())