PAL.C.T MINI SHELL
# tcp-monitor.pl
# Monitor a remote TCP server
sub get_tcp_status
{
# Connect to the server
socket(SOCK, PF_INET, SOCK_STREAM, getprotobyname("tcp")) ||
return { 'up' => -1 };
local $addr = inet_aton($_[0]->{'host'});
return { 'up' => -1 } if (!$addr);
local $st = time();
local $rv;
eval {
local $SIG{'ALRM'} = sub { die "alarm\n" };
alarm($_[0]->{'alarm'} ? $_[0]->{'alarm'} : 10);
$rv = connect(SOCK, pack_sockaddr_in($_[0]->{'port'}, $addr));
close(SOCK);
alarm(0);
};
return { 'up' => 0 } if ($@);
return { 'up' => $rv,
'time' => time() - $st };
}
sub show_tcp_dialog
{
print &ui_table_row($text{'tcp_host'},
&ui_textbox("host", $_[0]->{'host'}, 25));
print &ui_table_row($text{'tcp_port'},
&ui_textbox("port", $_[0]->{'port'}, 5));
print &ui_table_row($text{'tcp_alarm'},
&ui_opt_textbox("alarm", $_[0]->{'alarm'}, 5, $text{'default'}));
}
sub parse_tcp_dialog
{
&to_ipaddress($in{'host'}) || &to_ip6address($in{'host'}) ||
&error($text{'tcp_ehost'});
$_[0]->{'host'} = $in{'host'};
$in{'port'} =~ /^\d+$/ || &error($text{'tcp_eport'});
$_[0]->{'port'} = $in{'port'};
if ($in{'alarm_def'}) {
delete($_[0]->{'alarm'});
}
else {
$in{'alarm'} =~ /^\d+$/ || &error($text{'tcp_ealarm'});
$_[0]->{'alarm'} = $in{'alarm'};
}
}
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