<?
/*
 * mediaSpace
 *
 * Copyright (c) 2005 1000camels and Mental Blocks
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.  
 *
 * @version $Id: index.php,v 1.3 2005/03/30 02:20:35 darcy Exp $
 *
 */

//**************************************************************************
// configuration variables

define('RELATIVE_ROOT','./');

if(file_exists(RELATIVE_ROOT.'lib/config.php')) {
	require_once(RELATIVE_ROOT.'lib/config.php');
}

if(!defined('COLLECTION_DIRECTORY')) define('COLLECTION_DIRECTORY','system/collections/');
if(!defined('MEDIA_DIRECTORY')) define('MEDIA_DIRECTORY','system/media/');
if(!defined('TAG_DIRECTORY')) define('TAG_DIRECTORY','system/tags/');

if(!defined('STYLE_ROOT')) define('STYLE_ROOT','style/');
if(!defined('LIBRARY_ROOT')) define('LIBRARY_ROOT','lib/');
if(!defined('CLASS_ROOT')) define('CLASS_ROOT','classes/');

if(!defined('SHOW_SYSTEM_MESSAGES')) define('SHOW_SYSTEM_MESSAGES',1);
if(!defined('DEFAULT_HEADER')) define('DEFAULT_HEADER',"<?xml version=\"1.0\"?".">\n");
if(!defined('XMLEDITOR_LOG')) define('XMLEDITOR_LOG','log/error.log');

if(!defined('BASE_URL')) define('BASE_URL','http://'.$_SERVER['HTTP_HOST'].dirname($_SERVER['PHP_SELF']).'/');


//**************************************************************************
// setup environment

require_once('PEAR.php');

// error handling
error_reporting(E_ALL);
PEAR::setErrorHandling(PEAR_ERROR_TRIGGER, E_USER_WARNING);


//**************************************************************************
// process URI - follow cleanURLs

// load some general libraries for dealing with urls
require_once(RELATIVE_ROOT.'lib/URLFunctions.php');

// ****************************************************************************
// This is used to catch bad url requests.  they need to end with a / or a filename
// do it here before all the libraries, so it does load too much before refreshing
if(isset($_GET['path']) && substr($_GET['path'],-4) != '.php' && substr($_GET['path'],-1) != '/') {
	Header('Location: ' . cleanURL($_GET['path'].'/'));
	exit;
}


setIncludePath();

if(isset($_REQUEST)) stripGPCSlashes($_REQUEST);
if(isset($_POST)) stripGPCSlashes($_POST);
if(isset($_GET)) stripGPCSlashes($_GET);
if(isset($_COOKIE)) stripGPCSlashes($_COOKIE);

session_start();

// set up control variables
if(isset($_REQUEST['path'])) {
	$GLOBALS['galleryPath'] = $_REQUEST['path'];
} else {
	$GLOBALS['galleryPath'] = "";
}

setCleanUrlBase($GLOBALS['galleryPath']);


// create php4 file_put_contents
if(!function_exists('file_put_contents')) {
  function file_put_contents($filename, $data, $file_append = false) {
   $fp = fopen($filename, (!$file_append ? 'w+' : 'a+'));
   if(!$fp) {
     trigger_error('file_put_contents cannot write in file.', E_USER_ERROR);
     return;
   }
   fputs($fp, $data);
   fclose($fp);
  }
}

//**************************************************************************
// parse url
$GLOBALS['url_parts'] = split('/',$GLOBALS['galleryPath']);
if(empty($GLOBALS['url_parts'][(count($GLOBALS['url_parts'])-1)])) {
	array_pop($GLOBALS['url_parts']);
}


//**************************************************************************
// Main

//**************************************************************************
// determine which object we are working with
// choices: collection, media and tag
if(isset($GLOBALS['url_parts'][0])) {

	// set properties if they are available
	$objectId = (!isset($GLOBALS['url_parts'][1])) ? '' : $GLOBALS['url_parts'][1];
	$view = (!isset($GLOBALS['url_parts'][2])) ? '' : $GLOBALS['url_parts'][2];
	
	if($GLOBALS['url_parts'][0] == 'collection') {
		include(CLASS_ROOT.'Collection.php');
		
		$thisCollection =& new Collection($objectId);
		$content = $thisCollection->getContent($view);
	}
	else if($GLOBALS['url_parts'][0] == 'media') {
		include(CLASS_ROOT.'Media.php');
		
		$thisMedia =& new Media($objectId);
		$content = $thisMedia->getContent($view);
	}
	else if($GLOBALS['url_parts'][0] == 'tag') {
		include(CLASS_ROOT.'Tag.php');
		
		$thisTag =& new Tag($objectId);
		$content = $thisTag->getContent($view);
	}
	else {
		// show all collections
		$content = '<systemMessages><msg>requesting unavailable service: '.$GLOBALS['url_parts'][0].'</msg></systemMessages>';
		$GLOBALS['xslFile'] = "style/system.xsl";
	}
	
} else {
	
	$content = showServices();

}


//**************************************************************************
// Transformation (XSLT)

header('Content-type: application/xml');

echo $content;


//**************************************************************************
// Functions

/**
 * Shows available services
 *
 * @access public
 * @return STRING		xml
 */
function showServices() {
	$xmlString = '<services>'
							.'<service href="collection" title="Collections"/>'
							.'<service href="tag" title="Tag"/>'
							.'<service href="media" title="Media"/>'
							.'</services>';
							
	return $xmlString;
}


/**
 * perform xsl transformation
 *
 * @access public
 * @return STRING		xml
 */
function transform($xmlString,$xslFile,$xslParams = '') {
	if(empty($xslParams)) $xslParams = array();
	
	$xmldoc = domxml_open_mem($xmlString);
	$xsldoc = domxml_xslt_stylesheet_file($xslFile);
	$result = $xsldoc->process($xmldoc,$xslParams);
	$transformedContent =& $xsldoc->result_dump_mem($result);
	
	return $transformedContent;
}

//**************************************************************************
?>