update Perl sample scripts
This commit is contained in:
marschap
+177
-39
@@ -1,5 +1,8 @@
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#!/usr/bin/perl -w
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use 5.005;
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use strict;
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use Getopt::Std;
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use IO::Socket;
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use Fcntl;
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@@ -15,6 +18,7 @@ use Fcntl;
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# 2001, Jarda Benkovsky
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# 2002, Jonathan Oxer
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# 2002, Rene Wagner <reenoo@gmx.de>
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# 2006, Peter Marschall
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#
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# This file is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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@@ -37,16 +41,16 @@ use Fcntl;
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############################################################
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# Host which runs lcdproc daemon (LCDd)
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$HOST = "localhost";
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my $SERVER = "localhost";
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# Port on which LCDd listens to requests
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$PORT = "13666";
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my $PORT = "13666";
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# Path to `ping' command
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$PING = "ping";
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my $PING = "ping";
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# list of hosts to be ping'ed
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@MACHINES = ("lcdproc.omnipotent.net",
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my @MACHINES = ("lcdproc.omnipotent.net",
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"www.linux.org",
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"www.daemonnews.org",
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"127.0.0.1",
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@@ -59,14 +63,45 @@ $PING = "ping";
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# End of user configurable parts
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############################################################
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my $progname = $0;
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$progname =~ s#.*/(.*?)$#$1#;
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# declare functions
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sub error($@);
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sub usage($);
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## main routine ##
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my %opt = ();
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# get options #
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if (getopts('F:s:p:P:hV', \%opt) == 0) {
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usage(1);
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}
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# check options
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usage(0) if ($opt{h});
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if ($opt{V}) {
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print STDERR $progname ." version 1.1\n";
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exit(0);
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}
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# check number of arguments
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#usage(1) if ($#ARGV >= 0);
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# set variables
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$SERVER = defined($opt{s}) ? $opt{s} : $SERVER;
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$PORT = defined($opt{p}) ? $opt{p} : $PORT;
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$PING = defined($opt{P}) ? $opt{P} : $PING;
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@MACHINES = ($#ARGV >= 0) ? @ARGV : @MACHINES;
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# Connect to the server...
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$remote = IO::Socket::INET->new(
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Proto => "tcp",
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PeerAddr => $HOST,
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my $remote = IO::Socket::INET->new(
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Proto => 'tcp',
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PeerAddr => $SERVER,
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PeerPort => $PORT,
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)
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|| die "Cannot connect to LCDproc port\n";
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or error(1, "cannot connect to LCDd daemon at $SERVER:$PORT");
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# Make sure our messages get there right away
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$remote->autoflush(1);
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@@ -78,15 +113,13 @@ print $remote "hello\n";
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# server even if there isn't meant to be one. If you don't, you may find
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# your program crashes after running for a while when the buffers fill up:
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my $lcdresponse = <$remote>;
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print $lcdresponse;
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#print $lcdresponse;
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# Turn off blocking mode...
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fcntl($remote, F_SETFL, O_NONBLOCK);
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# Set up some screen widgets...
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print $remote "client_set name {Test Client (Perl)}\n";
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print $remote "client_set name {$progname}\n";
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$lcdresponse = <$remote>;
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print $remote "screen_add pings\n";
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$lcdresponse = <$remote>;
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@@ -103,43 +136,148 @@ $lcdresponse = <$remote>;
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print $remote "widget_set pings one 1 2 {Checking machines...}\n";
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$lcdresponse = <$remote>;
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while (1) {
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my %pingstatus = (); # pingstatus{host} = 1 <=> host is up
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my @list;
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my ($machine, %down, %up, $i, $list);
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while(1)
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{
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#print "Main loop...\n";
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# Handle input... (just spew it to the console)
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while(defined($line = <$remote>)) {
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if ( $line =~ /^success$/ ) { next; }
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while (defined(my $line = <$remote>)) {
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next if ($line =~ /^success$/o);
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print $line;
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}
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undef %down;
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undef %up;
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foreach $machine (@MACHINES)
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{
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foreach my $machine (@MACHINES) {
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`$PING -c 1 $machine`;
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if($?) { $down{$machine} = 1; }
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else { $up{$machine} = 1; }
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$pingstatus{$machine} = ($?) ? 0 : 1;
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}
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$i = 0; $list = "";
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foreach $machine (keys %up)
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{
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$i++;
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$list .= "$machine, ";
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}
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print $remote "widget_set pings one 1 2 {Machines Up: $i}\n";
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# count reachablei (up) machines
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@list = grep { $pingstatus{$_} == 1 } @MACHINES;
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print $remote "widget_set pings one 1 2 {Machines Up: ",scalar(@list),"}\n";
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my $lcdresponse = <$remote>;
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$i = 0; $list = "";
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foreach $machine (keys %down)
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{
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$i++;
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$list .= "$machine, ";
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}
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print $remote "widget_set pings two 1 3 {Down ($i): $list}\n";
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# count unreachable (down) machines
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@list = grep { $pingstatus{$_} == 0 } @MACHINES;
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print $remote "widget_set pings two 1 3 {Down (",scalar(@list),"): ",join(", ", @list),"}\n";
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$lcdresponse = <$remote>;
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# wait a bit
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sleep(1);
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}
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close ($remote) || die "close: $!";
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close($remote) or error(1, "close() failed: $!");
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exit;
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## print out error message and eventually exit ##
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# Synopsis: error($status, $message)
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sub error($@)
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{
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my $status = shift;
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my @msg = @_;
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print STDERR $progname . ": " . join(" ", @msg) . "\n";
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exit($status) if ($status);
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}
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## print out usage message and exit ##
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# Synopsis: usage($status)
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sub usage($)
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{
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my $status = shift;
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print STDERR "Usage: $progname [<options>] [<host> ...]\n";
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if (!$status) {
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print STDERR " where <options> are\n" .
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" -s <server> connect to <server> (default: $SERVER)\n" .
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" -p <port> connect to <port> on <server> (default: $PORT)\n" .
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" -P <ping> use <ping> as the ping cmmand (default: $PING)\n" .
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" -h show this help page\n" .
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" -V display version number\n";
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}
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else {
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print STDERR "For help, type: $progname -h\n";
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}
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exit($status);
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}
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__END__
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=pod
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=head1 NAME
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iosock.pl -- show reachability of hosts and display it on the LCD
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=head1 SYNOPSIS
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B<iosock.pl>
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[B<-s> I<server>]
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[B<-p> I<port>]
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[B<-P> I<ping>]
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[B<-h>]
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[B<-V>]
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[I<host> ...]
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=head1 DESCRIPTION
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B<iosock.pl> is a small example client for LCDd, the lcdproc server.
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It tries to ping the servers given as parameters and displays on the LCD
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whether they are reachable or not.
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If no hosts are given as parameters a built-in list of default machines will be checked.
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=head1 OPTIONS
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=over 4
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=item B<-s> I<server>
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Connect to the LCDd daemon at host I<server> instead of the default C<localhost>.
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=item B<-p> I<port>
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Use port I<port> when connecting to the LCDd server instead of the default
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LCDd port C<13666>.
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=item B<-P> I<ping>
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Use I<ping> as the command to check whether the remote hosts are reachable
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instead of the default C<ping>.
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Any I<ping> given using this options must understand the C<-c 1>
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command line option of the default C<ping>.
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=item B<-h>
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Display a short help page and exit.
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=item B<-V>
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Display iosock.pl's version number and exit.
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=back
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=head1 SEE ALSO
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L<LCDd(8)>
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=head1 AUTHORS
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iosock.pl was written by various members of the LCDproc project team;
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this manual page was written by Peter Marschall.
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=cut
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# EOF
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