[minorgod]

I've added a bit to the customer/dowload.php file to track the number of successful downloads for each download key. First I added a number_downloads (tinyint,not null,default 0) field to my xcart_download_keys table. Then I modified my customer/downloads.php file to update the count after a file is successfully downloaded. The code below was already a heavily modified version of the customer/download.php page before I added the download counter code...the original version supplied with x-cart didn't work for me...note, that this is for xcart version 3.3.1, but might work with newer releases, you'll have to decide that for yourself.

<?
/*****************************************************************************\
+-----------------------------------------------------------------------------+
| X-Cart                                                                      |
| Copyright (c) 2001-2002 Ruslan R. Fazliev. All rights reserved.            |
+-----------------------------------------------------------------------------+
| The Ruslan R. Fazliev forbids, under any circumstances, the unauthorized   |
| reproduction of software or use of illegally obtained software. Making      |
| illegal copies of software is prohibited. Individuals who violate copyright |
| law and software licensing agreements may be subject to criminal or civil   |
| action by the owner of the copyright.                                       |
|                                                                             |
| 1. It is illegal to copy a software, and install that single program for    |
| simultaneous use on multiple machines.                                      |
|                                                                             |
| 2. Unauthorized copies of software may not be used in any way. This applies |
| even though you yourself may not have made the illegal copy.                |
|                                                                             |
| 3. Purchase of the appropriate number of copies of a software is necessary  |
| for maintaining legal status.                                               |
|                                                                             |
| DISCLAIMER                                                                  |
|                                                                             |
| THIS SOFTWARE IS PROVIDED BY Ruslan R. Fazliev ``AS IS'' AND ANY  |
| EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE      |
| DISCLAIMED.  IN NO EVENT SHALL Ruslan R. Fazliev OR ITS           |
| CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,       |
| EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,         |
| PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
| OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,    |
| WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR     |
| OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF      |
| ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.                                  |
|                                                                             |
| The Initial Developer of the Original Code is Ruslan R. Fazliev.           |
| Portions created by Ruslan R. Fazliev are Copyright (C) 2001-2002          |
| Ruslan R. Fazliev. All Rights Reserved.                                    |
+-----------------------------------------------------------------------------+
\*****************************************************************************/

#
# $Id: download.php,v 1.11 2002/12/03 07:53:51 matr Exp $
#
# This module adds support for downloading electronicaly distributed goods
#

require "../smarty.php";
require "../config.php";

if (empty($id)) exit();

$query = "SELECT * FROM $sql_tbl[download_keys] WHERE download_key = '$id'";
$res = func_query_first($query);
$number_downloads=$res['number_downloads']+1;

# If there is corresponding key in database and not expired
if ((count($res) > 0) AND ($res['expires'] > time())) {
	# check if there is valid distribution for this product
	$productid = $res['productid'];

	$result = func_query_first("SELECT distribution, product, provider FROM $sql_tbl[products] WHERE productid = '$productid'");

	$distribution = $result['distribution'];
	$provider = $result['provider'];

	if (empty($provider) || $single_mode){
		//echo "provider empty or single mode: ".$files_dir_name."/$provider".$distribution;
		//$distribution = $files_dir_name.$distribution;
		$distribution = $files_dir_name."/$provider".$distribution;
	}else{
		//echo $files_dir_name."/$provider".$distribution;
		$distribution = $files_dir_name."/$provider".$distribution;
	}

	if ($fd = fopen ($distribution, "r")){

	      #
	      # Bugfix - content corrupted
	      # $contents = addslashes($contents);
	      #

	      $size=filesize($distribution);
	      $fname = basename ($distribution);

		//This is some really weak code I used just to redirect to the file before I fixed
		//this problem
	      //echo "
size: $size";
	      //echo "
fname: $fname";
	      //header("Location: $distribution");
	      //fclose ($fd);
	      //exit;
		header("Pragma: ");
		header("Cache-Control: ");
		header("Content-type: application/octet-stream");
		header("Content-Disposition: attachment; filename=\"".$fname."\"");
		header("Content-length: $size");

	      while(!feof($fd)) {
	           $buffer = fread($fd, 2048);
	           print $buffer;
	      }
	      fclose ($fd);
		  $query="UPDATE $sql_tbl[download_keys] SET number_downloads='$number_downloads' WHERE download_key='$id'";
		  db_query($query);
	      exit;
	}else {
		# If no such distributive
		$smarty->assign("product", $result['product']);
		$smarty->display("modules/Egoods/no_distributive.tpl");
		exit;
	}
} else {
	$smarty->display("modules/Egoods/wrong_key.tpl");
	exit;
}
?>