examples/LDAP/ldapsync.pl

   1 #!/usr/bin/perl -w
   2
   3 # LDAP to unix password sync script for samba-tng
   4 # originally by Jody Haynes <Jody.Haynes@isunnetworks.com>
   5 # 12/12/2000    milos@interactivesi.com
   6 #               modified for use with MD5 passwords
   7 # 12/16/2000    mami@arena.sci.univr.it
   8 #               modified to change lmpassword and ntpassword for samba
   9 # 05/01/2001    mami@arena.sci.univr.it
  10 #               modified for being also a /bin/passwd replacement
  11
  12 $basedn = "ou=Students,dc=univr, dc=it";
  13 $binddn = "uid=root,dc=univr,dc=it";
  14 $scope = "sub";
  15 $passwd = "mysecret";
  16
  17 foreach $arg (@ARGV) {
  18         if ($< != 0) {
  19                 die "Only root can specify parameters\n";
  20         } else {
  21                 if ( ($arg eq '-?') || ($arg eq '--help') ) {
  22                         print "Usage: $0 [-o] [username]\n";
  23                         print "  -o, --without-old-password     do not ask for old password (root only)\n";
  24                         print "  -?, --help                     show this help message\n";
  25                         exit (-1);
  26                 } elsif ( ($arg eq '-o') || ($arg eq '--without-old-password') ) {
  27                         $oldpass = 1;
  28                 } elsif (substr($arg,0) ne '-')  {
  29                         $user = $arg;
  30                         if (!defined(getpwnam($user))) {
  31                                 die "$0: Unknown user name '$user'\n";  ;
  32                         }
  33                 }
  34         }
  35 }
  36
  37 if (!defined($user)) {
  38         $user=$ENV{"USER"};
  39 }
  40
  41 if (!defined($oldpass)) {
  42         system "stty -echo";
  43         print "Old password for user $user: ";
  44         chomp($oldpass=<STDIN>);
  45         print "\n";
  46         system "stty echo";
  47
  48         $ntpwd = `/usr/local/sbin/smbencrypt '$oldpass'`;
  49         $lmpassword = substr($ntpwd, 0, index($ntpwd, ':')); chomp $lmpassword;
  50         $ntpassword = substr($ntpwd, index($ntpwd, ':')+1); chomp $ntpassword;
  51
  52         # Find dn for user $user (maybe check unix password too?)
  53         $dn=`ldapsearch -b '$basedn' -s '$scope' '(&(uid=$user)(lmpassword=$lmpassword)(ntpassword=$ntpassword))'|head -1`;
  54         chomp $dn;
  55
  56         if ($dn eq '') {
  57                 print "Wrong password for user $user!\n";
  58                 exit (-1);
  59         }
  60 } else {
  61         # Find dn for user $user
  62         $dn=`ldapsearch -b '$basedn' -s '$scope' '(uid=$user)'|head -1`;
  63         chomp $dn;
  64 }
  65
  66 system "stty -echo";
  67 print "New password for user $user: ";
  68 chomp($pass=<STDIN>);
  69 print "\n";
  70 system "stty echo";
  71
  72 system "stty -echo";
  73 print "Retype new password for user $user: ";
  74 chomp($pass2=<STDIN>);
  75 print "\n";
  76 system "stty echo";
  77
  78 if ($pass ne $pass2) {
  79         die "Wrong password!\n";
  80 } else {
  81 # MD5 password
  82 $random = join '', ('.', '/', 0..9, 'A'..'Z', 'a'..'z')[rand 64, rand 64, rand 64, rand 64, rand 64, rand 64, rand 64, rand 64];
  83 $bsalt = "\$1\$"; $esalt = "\$";
  84 $modsalt = $bsalt.$random.$esalt;
  85 $password = crypt($pass, $modsalt);
  86
  87 # LanManager and NT clear text passwords
  88 $ntpwd = `/usr/local/sbin/smbencrypt '$pass'`;
  89 chomp($lmpassword = substr($ntpwd, 0, index($ntpwd, ':')));
  90 chomp($ntpassword = substr($ntpwd, index($ntpwd, ':')+1));
  91
  92 $FILE="|/usr/bin/ldapmodify -D '$binddn' -w $passwd";
  93
  94 open FILE or die;
  95
  96 print FILE <<EOF;
  97 dn: $dn
  98 changetype: modify
  99 replace: userPassword
 100 userPassword: {crypt}$password
 101 -
 102 changetype: modify
 103 replace: lmpassword
 104 lmpassword: $lmpassword
 105 -
 106 changetype: modify
 107 replace: ntpassword
 108 ntpassword: $ntpassword
 109 -
 110
 111 EOF
 112 close FILE;
 113
 114 }
 115
 116 exit 0;
 117