fs_passwd/fs_passwd_server

   1 #!/usr/bin/perl -Tw
   2 #
   3 # fs_passwd_server
   4 #
   5 # portions of this script are copied from the `passwd' script in the original
   6 # (perl 4) camel book, now archived at
   7 # http://www.perl.com/CPAN/scripts/nutshell/ch6/passwd
   8 #
   9 # ivan@sisd.com 98-mar-9
  10 #
  11 # crypt-aware, s/password/_password/; ivan@sisd.com 98-aug-23
  12
  13 use strict;
  14 use IO::Handle;
  15 use Net::SSH qw(sshopen2);
  16 use FS::UID qw(adminsuidsetup);
  17 use FS::Record qw(qsearchs);
  18 use FS::svc_acct;
  19
  20 my $user = shift or die &usage;
  21 adminsuidsetup $user;
  22
  23 my($shellmachine)=shift or die &usage;
  24
  25 #causing trouble for some folks
  26 #$SIG{CHLD} = sub { wait() };
  27
  28 my($fs_passwdd)="/usr/local/sbin/fs_passwdd";
  29
  30 while (1) {
  31   my($reader,$writer)=(new IO::Handle, new IO::Handle);
  32   $writer->autoflush(1);
  33   sshopen2($shellmachine,$reader,$writer,$fs_passwdd);
  34   while (1) {
  35     my($username,$old_password,$new_password,$new_gecos,$new_shell);
  36     defined($username=<$reader>) or last;
  37     defined($old_password=<$reader>) or last;
  38     defined($new_password=<$reader>) or last;
  39     defined($new_gecos=<$reader>) or last;
  40     defined($new_shell=<$reader>) or last;
  41     chop($username);
  42     chop($old_password);
  43     chop($new_password);
  44     chop($new_gecos);
  45     chop($new_shell);
  46     my($svc_acct);
  47
  48     #need to try both $old_password and encrypted $old_password
  49     #maybe the crypt function in svc_acct.export needs to be a library?
  50     my $salt = substr($old_password,0,2);
  51     my $cold_password = crypt($old_password,$salt);
  52     $svc_acct=qsearchs('svc_acct',{'username'=>$username,
  53                                    '_password'=>$old_password,
  54     } )
  55            || qsearchs('svc_acct',{'username'=>$username,
  56                                    '_password'=>$cold_password,
  57     } );
  58     unless ( $svc_acct ) { print $writer "Incorrect password.\n"; next; }
  59
  60     my(%hash)=$svc_acct->hash;
  61     my($new_svc_acct) = new FS::svc_acct ( \%hash );
  62     $new_svc_acct->setfield('_password',$new_password)
  63       if $new_password && $new_password ne $old_password;
  64     $new_svc_acct->setfield('finger',$new_gecos) if $new_gecos;
  65     $new_svc_acct->setfield('shell',$new_shell) if $new_shell;
  66     my($error)=$new_svc_acct->replace($svc_acct);
  67     print $writer $error,"\n";
  68   }
  69   close $writer;
  70   close $reader;
  71   sleep 60;
  72   warn "Connection to $shellmachine lost!  Reconnecting...\n";
  73 }
  74
  75 sub usage {
  76   die "Usage:\n\n  fs_passwd_server user shellmachine\n";
  77 }
  78