examples/misc/wall.perl

   1 #!/usr/local/bin/perl
   2 #
   3 #@(#) smb-wall.pl Description:
   4 #@(#) A perl script which allows you to announce whatever you choose to
   5 #@(#) every PC client currently connected to a Samba Server...
   6 #@(#) ...using "smbclient -M" message to winpopup service.
   7 #@(#) Default usage is to message every connected PC.
   8 #@(#) Alternate usage is to message every pc on the argument list.
   9 #@(#)  Hacked up by Keith Farrar <farrar@parc.xerox.com>
  10 #
  11 # Cleanup and corrections by
  12 # Michal Jaegermann <michal@ellpspace.math.ualberta.ca>
  13 # Message to send can be now also fed (quietly) from stdin; a pipe will do.
  14 #=============================================================================
  15
  16 $smbstatus = "/usr/local/bin/smbstatus";
  17 $smbshout = "/usr/local/bin/smbclient -M";
  18
  19 if (@ARGV) {
  20     @clients = @ARGV;
  21     undef @ARGV;
  22 }
  23 else {  # no clients specified explicitly
  24     open(PCLIST, "$smbstatus |") || die "$smbstatus failed!.\n$!\n";
  25     while(<PCLIST>) {
  26         last if /^Locked files:/;
  27         split(' ', $_, 6);
  28         # do not accept this line if less then six fields
  29         next unless $_[5];
  30         # if you have A LOT of clients you may speed things up by
  31         # checking pid - no need to look further if this pid was already
  32         # seen;  left as an exercise :-)
  33         $client = $_[4];
  34         next unless $client =~ /^\w+\./;       # expect 'dot' in a client name
  35         next if grep($_ eq $client, @clients); # we want this name once
  36         push(@clients, $client);
  37     }
  38     close(PCLIST);
  39 }
  40
  41 if (-t) {
  42     print <<'EOT';
  43
  44 Enter message for Samba clients of this host
  45 (terminated with single '.' or end of file):
  46 EOT
  47
  48     while (<>) {
  49         last if /^\.$/;
  50         push(@message, $_);
  51     }
  52 }
  53 else { # keep quiet and read message from stdin
  54     @message = <>;
  55 }
  56
  57 foreach(@clients) {
  58 ##    print "To $_:\n";
  59     if (open(SENDMSG,"|$smbshout $_")) {
  60         print SENDMSG @message;
  61         close(SENDMSG);
  62     }
  63     else {
  64         warn "Cannot notify $_ with $smbshout:\n$!\n";
  65     }
  66 }
  67
  68 exit 0;
  69