[Icecast] Listener count in stream title

[Tristan Horn]

Hi all,

I just wrote this script (attached) which I thought others might find 
useful -- it updates the song title of every mountpoint with the current 
number of listeners for that mount.

It can be seen in action on http://radio.ethereal.net:8000/stale, where 
it runs every minute out of cron.

The script should be self-explanatory, but feel free to write me 
privately with any questions or problems... there's obviously some room 
for improvement.

thanks,
Tris

P.S.  status2.xsl seems to have some bugs (use of old variable names), 
some of which I fixed in the attached patch.  The patch shouldn't be 
needed to get the script to work, though.
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#!/usr/bin/perl -w
# tristan+perl at ethereal.net 17apr2005
# public domain

use strict;
use URI::Escape;
use LWP::UserAgent;

my $mounts = '/.*';
my $user = 'source';
my $pass = 'changeme';
my $host = 'localhost:8000';
my $realm = 'Icecast2 Server';
my $maxclients = 100;

my $ua = LWP::UserAgent->new;
$ua->timeout(10);
#$ua->env_proxy;

my $res = $ua->get("http://$host/status2.xsl");
die $res->status_line unless $res->is_success;

my $content = $res->content;
$content =~ s|.*<pre>(.*)</pre>|$1|s;

foreach my $line (split(/\n/, $content)) {
  if ($line =~ /^$mounts,/) {
    if ($line =~ /^([^,]*),[^,]*,[^,]*,(\d+),[^,]*, - (.*),$/) {
      my $mount = $1;
      my $listeners = $2;
      my $title = $3;
      $title =~ s|^\[\d+/\d+\] ||;
      my $newtitle = uri_escape("[$listeners/$maxclients] $title");
      $ua->credentials($host, $realm, $user, $pass);
      my $res2 = $ua->get("http://$host/admin/metadata?mode=updinfo&mount=$mount&song=$newtitle");
      warn $res2->status_line unless $res2->is_success;
    }
  } 
}
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--- status2.xsl~	2004-10-12 19:28:26.000000000 -0700
+++ status2.xsl	2005-04-17 19:42:05.000000000 -0700
@@ -3,7 +3,7 @@
 <xsl:template match = "/icestats" >
 <pre>
 MountPoint,Connections,Stream Name,Current Listeners,Description,Currently Playing,Stream URL 
-Global,Client:<xsl:value-of select="connections" /> Source: <xsl:value-of select="source_connections" />,,<xsl:value-of select="listeners" />,,
+Global,Client:<xsl:value-of select="connections" /> Source: <xsl:value-of select="source_total_connections" />,,<xsl:value-of select="clients" />,,
 <xsl:for-each select="source">
 <xsl:value-of select="@mount" />,,<xsl:value-of select="name" />,<xsl:value-of select="listeners" />,<xsl:value-of select="description" />,<xsl:value-of select="artist" /> - <xsl:value-of select="title" />,<xsl:value-of select="url" />
 </xsl:for-each>