feedforall_rss2html_pro.php

for news RSS to HTML as ASP

<?PHP
//
// rss2html.php RSS feed to HTML webpage script
//
// Copyright 2006-2007 NotePage, Inc. all rights reserved
// http://www.feedforall.com
//
// NotePage, Inc. grants registerd users of our FeedForAll and/or
// FeedForAll Mac product(s) the right to install and use the
// FeedForAll_rss2html_pro.php script free of charge.  
// Please refer to the EULA included in the download for full license
// terms and conditions.
//
// $Id: FeedForAll_rss2html_pro.php,v 3.0 2007/04/16 14:23:03 housley Exp $
//
// $Log: FeedForAll_rss2html_pro.php,v $
// Revision 3.0  2007/04/16 14:23:03  housley
// Release version 3.0 of the scripts
//
// Revision 1.18  2007/04/09 01:25:50  housley
// Fix the commented out code for enabling the extensions
//
// Revision 1.17  2007/04/06 11:08:58  housley
// Add support for the Dublin Core (dc) namespace
//
// Revision 1.16  2007/03/07 03:01:22  housley
// Add the flag to not parse TrackBack
//
// Revision 1.15  2007/03/05 17:29:45  housley
// Add a simple way to block parsing extensions
//
// Revision 1.14  2007/03/03 21:10:09  housley
// * Make the item a full class object
// * Support parsing the iTunes(R) extension
//
// Revision 1.13  2007/02/21 20:24:20  housley
// Remove unused function
//
// Revision 1.12  2007/02/14 01:31:09  housley
// Encode the '#' in GUID URLs
//
// Revision 1.11  2006/11/29 12:04:38  housley
// When checking a GUID that is a complex URL, there needs to be some conversions done.
//
// Revision 1.10  2006/11/05 17:23:00  housley
// Work arond a bug in PHP related to large strings an preg_replace_callback()
//
// Revision 1.9  2006/09/29 19:07:15  housley
// Allow rss2html.php not to show an identity when used with any of the
// pay scripts.
//
// Revision 1.8  2006/09/04 12:31:24  housley
// If the template is remote, converting the ~~~QUOTE~~~ back to \" still needs to be done.
//
// Revision 1.7  2006/08/26 11:30:19  housley
// Comment the code
//
// Revision 1.6  2006/08/25 19:15:13  housley
// Prevent remote templates with rss2html-pro
//
// Revision 1.5  2006/08/25 18:00:30  housley
// Use a better eval function to allow spanning fo the PHP code
//
// Revision 1.4  2006/08/25 15:08:57  housley
// The ~~~ItemUniqueLink=X~~~ is part for Pro now
//
// Revision 1.3  2006/08/21 20:19:32  housley
// Use special routines so that rss2html-pro will work with RSS fields that
// have quotes in them.
//
// Revision 1.1  2006/08/14 21:25:02  housley
// Initial version of a post processing module that would allow PHP to be
// used in the template to preform logic.
//

//
// ==========================================================================
// Configuration options
// ==========================================================================
//
// To prevent parsing of the iTunes(R) XML namespace extension, uncomment the
// following line.
//$Dont_Parse_iTunes == TRUE;
//
// To prevent parsing of the TrackBack XML namespace extension, uncomment the
// following line.
//$Dont_Parse_TrackBack == TRUE;
//
// To prevent parsing of the DublinCore XML namespace extension, uncomment the
// following line.
//$Dont_Parse_DublinCore == TRUE;

if (function_exists("FeedForAll_rss2html_AddIdentity") === FALSE) {
  Function FeedForAll_rss2html_AddIdentity($itemString) {
    return $itemString;
  }
}

if (function_exists("FeedForAll_rss2html_pro") === FALSE) {
  Function FeedForAll_rss2html_pro($string) {
    //
    //
    // IMPORTANT:  Since allowing remote templates to use PHP is a HUGE
    //             security violation, on the order of the IE exploits.
    //             Therefore if the template is remote, then no processing
    //             will be done
    //
    GLOBAL $TEMPLATEfilename;
    
    if (strstr($TEMPLATEfilename, "://") !== FALSE) {
      // Return our special ~~~QUOTE~~~ back into "
      return str_replace("~~~QUOTE~~~", "\"", $string);
    }

    // Put markers to enter and then exit PHP at the front a back of the
    // string, this will make it look like PHP has ended before the string
    $string = "<?php ?>".$string."<?php ?>";
    // Convert shortcut echo into a full echo command
    $string = preg_replace("/<\?=\s+(.*?)\s+\?>/", "<?php echo $1; ?>", $string);
    // Setup for parsing the string. converting HTML into PHP echo commands

    $result = "";
    while (($startLoc = strpos($string, "?>")) !== FALSE) {
      $result .= substr($string, 0, $startLoc);
      $after = substr($string, $startLoc+2);
      if (($endLoc = strpos($after, "<?")) === FALSE) {
        $result .= $string;
        break;
      } else {
        $replaceStr = substr($after, 0, $endLoc);
        $result .= "echo stripslashes(\"".addslashes($replaceStr)."\");";
        if ((($startLoc = strpos(strtolower(substr($after, $endLoc)), "<?php")) !== FALSE) && ($startLoc == 0)) {
          // Fake the advance
          $endLoc += 3;
        }
        $string = substr($after, $endLoc+2);
      }
    }
    $string = str_replace("?>", "", str_replace(array("<?php", "<?"), "", $result));
    $result = "";
    
    //
    // Use output buffering around the eval()
    ob_start();
    eval($string);
    $result = ob_get_contents();
    ob_end_clean();
 
    // Return our special ~~~QUOTE~~~ back into "
    return str_replace("~~~QUOTE~~~", "\"", $result);
  }
  
  Function FeedForAll_rss2html_str_replace($search, $replace, $subject) {
    // Convert " to ~~~QUOTE~~~ so we can work with abritarty strings from
    // the RSS feed
    $replace = str_replace("\"", "~~~QUOTE~~~", $replace);
    return str_replace($search, $replace, $subject);
  }
  
  Function FeedForAll_rss2html_CreateUniqueLink($title, $description, $link, $guid, $XMLfilename, $itemTemplate) {
    $match = Array();
    
    while (preg_match("/~~~ItemUniqueLinkWithTemplate=.*~~~/", $itemTemplate, $match) !== FALSE) {
      if ((count($match) == 0) || ($match[0] == "")) {
        // All done
        return $itemTemplate;
      }
      
      // Get the filename of the template to be used
      $template = str_replace("ItemUniqueLinkWithTemplate=", "", str_replace("~~~", "", $match[0]));
      if (($title == "") && ($description == "") && ($guid == "")) {
        // There is on information that a link can be made of
        $itemTemplate = str_replace($match[0], "", $itemTemplate);
      }
      elseif ($guid != "") {
        // We have a GUID, good feed creator
        $replace = "http://$_SERVER[SERVER_NAME]$_SERVER[SCRIPT_NAME]?XMLFILE=".FeedForAll_rss2html_encodeURL($XMLfilename)."&amp;TEMPLATE=".FeedForAll_rss2html_encodeURL($template)."&amp;GUID=".FeedForAll_rss2html_encodeURL($guid, 1)."&amp;MAXITEMS=1";
        $itemTemplate = FeedForAll_rss2html_str_replace($match[0], $replace, $itemTemplate);
      } else {
        // No GUID, bad feed creator, use a hash of the title and description
        $replace = "http://$_SERVER[SERVER_NAME]$_SERVER[SCRIPT_NAME]?XMLFILE=".FeedForAll_rss2html_encodeURL($XMLfilename)."&amp;TEMPLATE=".FeedForAll_rss2html_encodeURL($template)."&amp;ITEMHASH=".md5($title.$description)."&amp;MAXITEMS=1";
        $itemTemplate = FeedForAll_rss2html_str_replace($match[0], $replace, $itemTemplate);
      }
    }
    if ($link);
    return $itemTemplate;
  }
  
  Function FeedForAll_rss2html_UseUniqueLink($title, $description, $link, $guid) {
    // Look for either GUID or ITEMHASH to find the unique items
    if (isset($_REQUEST["GUID"])) {
      if (($_REQUEST["GUID"] == $guid) || ($_REQUEST["GUID"] == str_replace("&", "&amp;", $guid))) {
        return 1;
      }
      return 0;
    }
    elseif (isset($_REQUEST["ITEMHASH"])) {
      if ($_REQUEST["ITEMHASH"] == md5(trim($title).trim($description))) {
        return 1;
      }
      return 0;
    }
    if ($link);
    // Neither GUID or ITEMHASH was specified
    return -1;
  }
}

@include("FeedForAll_parse_Extensions.inc.php");

?>