source4/scripting/bin/ktpass.sh

   1 #!/bin/sh
   2 # vim: expandtab
   3 #
   4 # Copyright (C) Matthieu Patou <mat@matws.net>  2010
   5 #
   6 #
   7 #
   8 # This program is free software; you can redistribute it and/or modify
   9 # it under the terms of the GNU General Public License as published by
  10 # the Free Software Foundation; either version 3 of the License, or
  11 # (at your option) any later version.
  12 #
  13 # This program is distributed in the hope that it will be useful,
  14 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 # GNU General Public License for more details.
  17 #
  18 # You should have received a copy of the GNU General Public License
  19 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20
  21 name="ktpass.sh"
  22 TEMP=`getopt -o h --long princ:,pass:,out:,host:,ptype:,enc:,path-to-ldbsearch: \
  23      -n "$name" -- "$@"`
  24 eval set -- "$TEMP"
  25
  26 usage () {
  27   echo -ne "$name --out <keytabfile> --princ <principal> --pass <password>|*\n"
  28   echo -ne "      [--host hostname] [--enc <encryption>]\n"
  29   echo -ne "      [--ptype <type>] [--path-to-ldbsearch <path>]\n"
  30   echo -ne "\nEncoding should be one of:\n"
  31   echo -ne " * des-cbc-crc\n"
  32   echo -ne " * des-cbc-md5\n"
  33   echo -ne " * rc4-hmac (default)\n"
  34   echo -ne " * aes128-cts\n"
  35   echo -ne " * aes256-cts\n"
  36   exit 0
  37 }
  38 while true ; do
  39   case "$1" in
  40     --out) outfile=$2 ; shift 2 ;;
  41     --princ) princ=$2 ; shift 2 ;;
  42     --pass) pass=$2 ; shift 2 ;;
  43     --host) host=$2 ; shift 2 ;;
  44     --ptype) shift 2 ;;
  45     --enc) enc=$2; shift 2;;
  46     --path-to-ldbsearch) path="$2/"; shift 2;;
  47     -h) usage;;
  48     --) shift ; break ;;
  49     *) echo "Internal error!" ; exit 1 ;;
  50   esac
  51 done
  52 #RC4-HMAC-NT|AES256-SHA1|AES128-SHA
  53 if [ -z "$enc" ]; then
  54     enc="rc4-hmac"
  55 fi
  56 if [ -z "$path" ]; then
  57   path=`dirname $0`/../bin/
  58   if [ ! -f ${path}ldbsearch ]; then
  59     path=`dirname $0`/../../bin/
  60   fi
  61 fi
  62 if [ -z "$outfile" -o -z "$princ" -o -z "$pass" ]; then
  63   echo "At least one mandatory parameter (--out, --princ, --pass) was not specified"
  64   usage
  65 fi
  66 if [ -z $host ]; then
  67   host=`hostname`
  68 fi
  69
  70 kvno=`${path}ldbsearch -H ldap://$host "(|(samaccountname=$princ)(serviceprincipalname=$princ)(userprincipalname=$princ))" msds-keyversionnumber  -k 1 -N 2>/dev/null| grep -i msds-keyversionnumber`
  71 if [ x"$kvno" = x"" ]; then
  72   echo -ne "Unable to find kvno for principal $princ\n"
  73   echo -ne " check that you are authentified with kerberos\n"
  74   exit 1
  75 else
  76   kvno=`echo $kvno | sed 's/^.*: //'`
  77 fi
  78
  79 if [ "$pass" = "*" ]; then
  80   echo -n "Enter password for $princ: "
  81   stty -echo
  82   read pass
  83   stty echo
  84   echo ""
  85 fi
  86
  87 ktutil >/dev/null <<EOF
  88 add_entry -password -p $princ -k $kvno -e $enc
  89 $pass
  90 wkt $outfile
  91 EOF
  92
  93 if [ $? -eq 0 ]; then
  94    echo "Keytab file $outfile created with success"
  95 else
  96   echo "Error while creating the keytab file $outfile"
  97 fi