[SOLVED] PHP/XML issue

[kwdrysdale]

I am using a web-based media player to play my podcast.xml file.  Everything works great except for one tiny issue.  There is a clickable link that is supposed to allow the user to download the audio file to their computer.  Well...when the user clicks the link it opens a new window and then plays the audio file with whatever program the person has setup to play mp3 files.  My goal is to use a force download script to bypass the users mp3 player of choice and save the file to their computer.  If I try my PHP script directly on a webpage everything works fine.  The problem is when I try to take that exact same link and use it in my podcast.xml file.  If anyone is able to help with a solution it would be greatly appreciated.  I will post the code I am using for the force_download.php as well as the podcast.xml:

 

force_download.php:

<?php

// get the file url from querystring
$filename = realpath($_GET['file']);

// Error: only files that are in a subdir of this script can be downloaded
$current_dir = dirname(realpath($_SERVER['SCRIPT_FILENAME']));
if($current_dir != substr(dirname($filename), 0, strlen($current_dir))) {
die( "The requested file cannot be retrieved for security 1 reasons.");
}

// Error: PHP files cannot be downloaded
if(strToLower(substr($filename,strlen($filename)-3, 3) == 'php')) {
die( "The requested file cannot be retrieved for security reasons.");
}

// Error: file is not found
if(!file_exists($filename)) {
die("The requested file could not be found");
}

// required for IE, otherwise Content-disposition is ignored
if(ini_get('zlib.output_compression')) { ini_set('zlib.output_compression', 'Off'); }


// build file headers
header("Pragma: public");
header("Expires: 0");
header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
header("Cache-Control: private",false);

// header for the content type
$ext = strToLower(substr($filename,strlen($filename)-3, 3));
if ($ext == "mp3" ) { header("Content-Type: audio/x-mp3"); } 
else if ($ext == "jpg") { header("Content-Type: image/jpeg"); }
else if ($ext == "gif") { header("Content-Type: image/gif"); }
else if ($ext == "png") { header("Content-Type: image/png"); }
else if ($ext == "swf") { header("Content-Type: application/x-shockwave-flash"); }
else if ($ext == "flv") { header("Content-Type: video/flv"); }

// and some more headers
header("Content-Disposition: attachment; filename=\"".basename($filename)."\";" );
header("Content-Transfer-Encoding: binary");
header("Content-Length: ".filesize($filename));

// refer to file and exit
readfile("$filename");
exit();

?>

 

podcast.xml

<?xml version="1.0" encoding="UTF-8"?>
<rss xmlns:itunes="http://www.itunes.com/dtds/podcast-1.0.dtd" version="2.0">

  <channel>

    <title>Solid Rock Ministries Podcast</title>
    <description>The best way to stay up to date with all the current messages from SRM!</description>
    <link>http://www.solidrockministries-mb.ca</link>
    <language>en-us</language>
    <copyright>Copyright 2008</copyright>
    <lastBuildDate>Thur, 1 Jan 2009 13:37</lastBuildDate>
    <pubDate>Wed, 31 Dec 2008 16:22</pubDate>
    <docs></docs>
    <webMaster>kmdrysdale@shaw.ca</webMaster>


<item>
<title>Wed Dec 31/08 - New Year's Eve</title>
<link>force_download.php?file=mp3/125-Wed Dec 31, 2008-New Year's Eve.mp3</link>
<description>9 - Give an offering of worship to the Lord as we declare the new season.</description>
<enclosure url="http://www.solidrockministries-mb.ca/mp3/125-Wed%20Dec%2031,%202008-New%20Year's%20Eve.mp3" length="57972888" type="audio/mpeg"/>
<itunes:duration>2:41:02</itunes:duration>
<category>Podcasts</category>
<pubDate>Wed, 31 Dec 2008 19:30</pubDate>
</item>

<item>
<title>Sun Dec 28/08 - Live in God's Season</title>
<link>http://www.solidrockministries-mb.ca/mp3/124-Sun%20Dec%2028,%202008-Live%20in%20God's%20Season.mp3</link>
<description>Pastor Dave shares more about our new season that we are in.  Prepare yourself to live in God's season!</description>
<enclosure url="http://www.solidrockministries-mb.ca/mp3/124-Sun%20Dec%2028,%202008-Live%20in%20God's%20Season.mp3" length="476705524" type="audio/mpeg"/>
<itunes:duration>2:12:25</itunes:duration>
<category>Podcasts</category>
<pubDate>Sun, 28 Dec 2008 10:00</pubDate>
</item>

<item>
<title>Sun Dec 21/08 - The New Season</title>
<link>http://www.solidrockministries-mb.ca/mp3/123-Sun%20Dec 21,%202008-The%2New%20Season.mp3</link>
<description>Pastor Dave shares more detail about the new season we are in and releases an opportunity to give on New Years Eve.</description>
<enclosure url="http://www.solidrockministries-mb.ca/mp3/123-Sun%20Dec 21,%202008-The%2New%20Season.mp3" length="39222800" type="audio/mpeg"/>
<itunes:duration>2:15:16</itunes:duration>
<category>Podcasts</category>
<pubDate>Sun, 21 Dec 2008 10:00</pubDate>
</item>

<item>
<title>Wed Dec 17/08 - Ministry Gifts are Personal</title>
<link>http://www.solidrockministries-mb.ca/mp3/122-Wed%20Dec%2017,%202008-Elder%20Al%20Drysdale-Ministry%20Gifts%20are%20Personal.mp3</link>
<description>Elder Al Drysdale teaches us that God gave us each, individually, the ministry gifts that are placed over us.</description>
<enclosure url="http://www.solidrockministries-mb.ca/mp3/122-Wed%20Dec%2017,%202008-Elder%20Al%20Drysdale-Ministry%20Gifts%20are%20Personal.mp3" length="24927480" type="audio/mpeg"/>
<itunes:duration>1:30:16</itunes:duration>
<category>Podcasts</category>
<pubDate>Wed, 17 Dec 2008 19:30</pubDate>
</item>

</channel>

</rss>

 

[DarkWater]

So you're trying to use the force_download.php link in the <enclosure> tab in podcast.xml?

[kwdrysdale]

not the <enclosure> tag, inside the <link> tags.

[DarkWater]

Umm, what does it do if you use the force_download.php link rather than a direct link to the MP3?

[kwdrysdale]

A direct link to the MP3 will open a new window and (for me) play the file in QuickTime.  Others it may play in WindowsMedia, RealPlayer, etc.  If I use force_download.php it will bring up the save dialog and download direct to the users computer rather than stream the media.

[DarkWater]

I mean, what happens when you use it in podcast.xml and try to load it in the media player that reads the podcast.xml file?  Does it not play?

[kwdrysdale]

Sorry folks.  I just figured out my problem.  I was trying my link on an old file (so none of our members would have any problems) that did not have any apostrophe ( ' ) characters.  Then when trying it on a newer file, that had an apostrophe, it would not work proper.  I'll just have to remember not to use any special characters in my filenames.