#!/usr/bin/perl

###############################################################################
###############################################################################
##
##  Copyright (C) Sistina Software, Inc.  1997-2003  All rights reserved.
##  Copyright (C) 2004 Red Hat, Inc.  All rights reserved.
##  
##  This copyrighted material is made available to anyone wishing to use,
##  modify, copy, or redistribute it subject to the terms and conditions
##  of the GNU General Public License v.2.
##
###############################################################################
###############################################################################

use Getopt::Std;
use Net::Telnet ();

# Get the program name from $0 and strip directory names
$_=$0;
s/.*\///;
my $pname = $_;

# WARNING!! Do not add code bewteen "#BEGIN_VERSION_GENERATION" and
# "#END_VERSION_GENERATION"  It is generated by the Makefile

#BEGIN_VERSION_GENERATION
$FENCE_RELEASE_NAME="6.0.2.36";
$SISTINA_COPYRIGHT=("Copyright (C) Red Hat, Inc.  2004  All rights reserved.");
$BUILD_DATE="(built Thu Jan 29 12:30:32 EST 2009)";
#END_VERSION_GENERATION


sub usage 
{
    print "Usage:\n\n"; 
    print "$pname [options]\n\n";
    print "Options:\n";
    print "  -a <ip>          IP address or hostname of switch\n";
    print "  -h               Usage\n";
    print "  -n <num>         Port number to disable\n";
    print "  -p <string>      Password for login\n";
    print "  -V               version\n\n";

    exit 0;
}

sub fail
{
  ($msg) = @_;
  print $msg."\n" unless defined $opt_q;
  $t->close if defined $t;
  exit 1;
}

sub fail_usage
{
  ($msg) = @_;
  print STDERR $msg."\n" if $msg;
  print STDERR "Please use '-h' for usage.\n";
  exit 1;
}

sub version
{
  print "$pname $FENCE_RELEASE_NAME $BUILD_DATE\n";
  print "$SISTINA_COPYRIGHT\n" if ( $SISTINA_COPYRIGHT );

  exit 0;
}

if (@ARGV > 0) {
    getopts("a:hn:p:V") || fail_usage ;

    usage if defined $opt_h;
    version if defined $opt_V;

    fail_usage "Unknown parameter." if (@ARGV > 0);

    fail_usage "No '-a' flag specified." unless defined $opt_a;
    fail_usage "No '-p' flag specified." unless defined $opt_p;
    fail_usage "No '-n' flag specified." unless defined $opt_n;

} else {
    get_options_stdin();

    fail "failed: no IP address for the Vixel." unless defined $opt_a;
    fail "failed: no password provided." unless defined $opt_p;
    fail "failed: no port number specified." unless defined $opt_n;
}

#
# Set up and log in
#

$t = new Net::Telnet;

$t->open($opt_a);

$t->waitfor('/assword:/');

$t->print($opt_p);

($out, $match)= $t->waitfor(Match => '/\>/', Match => '/assword:/');

if ($match =~ /assword:/) {
  fail "failed: incorrect password\n";
} elsif ( $match !~ />/ ) {
  fail "failed: timed out waiting for prompt\n";
}
 
$t->print("config");

$t->waitfor('/\(config\)\>/');

$t->print("zone");

$t->waitfor('/\(config\/zone\)\>/');

#
# Do the command
#

$cmd = "config $opt_n \"\"";
$t->print($cmd);

$t->waitfor('/\(config\/zone\)\>/');

$t->print("apply");

($text, $match) = $t->waitfor('/\>/');
if ($text !~ /[Oo][Kk]/) {
  fail "failed: error from switch\n";
}

$t->print("exit");

print "success: zonedisable $opt_n\n";
exit 0;


sub get_options_stdin
{
    my $opt;
    my $line = 0;

    while( defined($in = <>) )
    {   
        $_ = $in;
	chomp;
        
        # strip leading and trailing whitespace
        s/^\s*//;
        s/\s*$//;

        # skip comments
        next if /^#/;

        $line+=1;
        $opt=$_;
        next unless $opt;

        ($name,$val)=split /\s*=\s*/, $opt;

        if ( $name eq "" ) {
           print("parse error: illegal name in option $line\n");
           exit 2;
        } 

        # DO NOTHING -- this field is used by fenced
	elsif ($name eq "agent" ) { }

	# FIXME -- depricated.  use "port" instead.
	elsif ($name eq "fm" ) {
            (my $dummy,$opt_n) = split /\s+/,$val;
	    print STDERR "Depricated \"fm\" entry detected.  refer to man page.\n";
        } 

	elsif ($name eq "ipaddr" ) 
	{
            $opt_a = $val;
        } 

	elsif ($name eq "name" ) { }

        elsif ($name eq "passwd" ) 
	{
            $opt_p = $val;
        } 

        elsif ($name eq "port" ) 
	{
            $opt_n = $val;
        } 

        # FIXME should we do more error checking?
        # Excess name/vals will be eaten for now
	else 
	{
           fail "parse error: unknown option: $opt";
           #> exit 2;
        }
    }
}

