Trap alert

#!/usr/bin/perl
#
# Trap alert, for use with mon-0.38pre* and greater.
#
# Specify user and pass via MON_TRAP_USER (-U) and MON_TRAP_PASS (-P)
#
# Jim Trocki, trockij@transmeta.com
#
# $Id: trap.alert 1.1 Sat, 26 Aug 2000 15:22:34 -0400 trockij $
#
#    Copyright (C) 1998, Jim Trocki
#
#    This program is free software; you can redistribute it and/or modify
#    it under the terms of the GNU General Public License as published by
#    the Free Software Foundation; either version 2 of the License, or
#    (at your option) any later version.
#
#    This program is distributed in the hope that it will be useful,
#    but WITHOUT ANY WARRANTY; without even the implied warranty of
#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#    GNU General Public License for more details.
#
#    You should have received a copy of the GNU General Public License
#    along with this program; if not, write to the Free Software
#    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
#
use Getopt::Std;
use Socket;
getopts ("s:g:h:t:l:o:uU:P:");

$TRAP_PRO_VERSION = 0.3807;

$summary=<STDIN>;
chomp $summary;

$detail = "";
while (<STDIN>) {
    $detail .= $_;
}
chomp $detail;

$t = time;

$USER = ($ENV{"MON_TRAP_USER"} || $opt_U) || "";
$PASS = ($ENV{"MON_TRAP_PASS"} || $opt_P) || "";
$OPST = defined $ENV{"MON_OPSTATUS"} ? $ENV{"MON_OPSTATUS"} : 0;

if ($opt_o) {
    $OPST = int ($opt_o);
}

$pkt = "";
$pkt .= "pro=$TRAP_PRO_VERSION\n";
$pkt .= "usr=$USER\n" . "pas=$PASS\n" if ($USER ne "");
$pkt .= "typ=$ENV{MON_ALERTTYPE}\n";
$pkt .= "seq=0\n";
$pkt .= "grp=$ENV{MON_GROUP}\n";
$pkt .= "svc=$ENV{MON_SERVICE}\n";
$pkt .= "sta=$ENV{MON_RETVAL}\n";
$pkt .= "spc=$OPST\n";
$pkt .= "tsp=$t\n";
$pkt .= "sum=$summary\n";
$pkt .= "dtl=$detail\n.\n";

$proto = getprotobyname ("udp") || die "could not get proto\n";
socket (TRAP, AF_INET, SOCK_DGRAM, $proto) ||
    die "could not create UDP socket: $!\n";

$port = getservbyname ('mon', 'udp') || 2583;

foreach $host (@ARGV) {
    my $paddr = sockaddr_in ($port, inet_aton ($host));
    if (!defined (send (TRAP, $pkt, 0, $paddr))) {
    	print STDERR "could not send trap to $host: $!\n";
	next;
    }
}

close (TRAP);

exit;