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 {
  28         echo -ne "$name --out <keytabfile> --princ <principal> --pass <password>|*\n"
  29         echo -ne "      [--host hostname] [--enc <encryption>]\n"
  30         echo -ne "      [--ptype <type>] [--path-to-ldbsearch <path>]\n"
  31         echo -ne "\nEncoding should be one of:\n"
  32         echo -ne " * des-cbc-crc\n"
  33         echo -ne " * des-cbc-md5\n"
  34         echo -ne " * rc4-hmac (default)\n"
  35         echo -ne " * aes128-cts\n"
  36         echo -ne " * aes256-cts\n"
  37         exit 0
  38 }
  39 while true; do
  40         case "$1" in
  41         --out)
  42                 outfile=$2
  43                 shift 2
  44                 ;;
  45         --princ)
  46                 princ=$2
  47                 shift 2
  48                 ;;
  49         --pass)
  50                 pass=$2
  51                 shift 2
  52                 ;;
  53         --host)
  54                 host=$2
  55                 shift 2
  56                 ;;
  57         --ptype) shift 2 ;;
  58         --enc)
  59                 enc=$2
  60                 shift 2
  61                 ;;
  62         --path-to-ldbsearch)
  63                 path="$2/"
  64                 shift 2
  65                 ;;
  66         -h) usage ;;
  67         --)
  68                 shift
  69                 break
  70                 ;;
  71         *)
  72                 echo "Internal error!"
  73                 exit 1
  74                 ;;
  75         esac
  76 done
  77 #RC4-HMAC-NT|AES256-SHA1|AES128-SHA
  78 if [ -z "$enc" ]; then
  79         enc="rc4-hmac"
  80 fi
  81 if [ -z "$path" ]; then
  82         path=$(dirname $0)/../bin/
  83         if [ ! -f ${path}ldbsearch ]; then
  84                 path=$(dirname $0)/../../bin/
  85         fi
  86 fi
  87 if [ -z "$outfile" -o -z "$princ" -o -z "$pass" ]; then
  88         echo "At least one mandatory parameter (--out, --princ, --pass) was not specified"
  89         usage
  90 fi
  91 if [ -z $host ]; then
  92         host=$(hostname)
  93 fi
  94
  95 kvno=$(${path}ldbsearch -H ldap://$host "(|(samaccountname=$princ)(serviceprincipalname=$princ)(userprincipalname=$princ))" msds-keyversionnumber -k 1 -N 2>/dev/null | grep -i msds-keyversionnumber)
  96 if [ x"$kvno" = x"" ]; then
  97         echo -ne "Unable to find kvno for principal $princ\n"
  98         echo -ne " check that you are authentified with kerberos\n"
  99         exit 1
 100 else
 101         kvno=$(echo $kvno | sed 's/^.*: //')
 102 fi
 103
 104 if [ "$pass" = "*" ]; then
 105         echo -n "Enter password for $princ: "
 106         stty -echo
 107         read pass
 108         stty echo
 109         echo ""
 110 fi
 111
 112 ktutil >/dev/null <<EOF
 113 add_entry -password -p $princ -k $kvno -e $enc
 114 $pass
 115 wkt $outfile
 116 EOF
 117
 118 if [ $? -eq 0 ]; then
 119         echo "Keytab file $outfile created with success"
 120 else
 121         echo "Error while creating the keytab file $outfile"
 122 fi