<?php
if(!defined('sugarEntry') || !sugarEntry) die('Not A Valid Entry Point');
/*********************************************************************************
 * SugarCRM Community Edition is a customer relationship management program developed by
 * SugarCRM, Inc. Copyright (C) 2004-2012 SugarCRM Inc.
 * 
 * This program is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Affero General Public License version 3 as published by the
 * Free Software Foundation with the addition of the following permission added
 * to Section 15 as permitted in Section 7(a): FOR ANY PART OF THE COVERED WORK
 * IN WHICH THE COPYRIGHT IS OWNED BY SUGARCRM, SUGARCRM DISCLAIMS THE WARRANTY
 * OF NON INFRINGEMENT OF THIRD PARTY RIGHTS.
 * 
 * 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 Affero General Public License for more
 * details.
 * 
 * You should have received a copy of the GNU Affero General Public License along with
 * this program; if not, see http://www.gnu.org/licenses or write to the Free
 * Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02110-1301 USA.
 * 
 * You can contact SugarCRM, Inc. headquarters at 10050 North Wolfe Road,
 * SW2-130, Cupertino, CA 95014, USA. or at email address contact@sugarcrm.com.
 * 
 * The interactive user interfaces in modified source and object code versions
 * of this program must display Appropriate Legal Notices, as required under
 * Section 5 of the GNU Affero General Public License version 3.
 * 
 * In accordance with Section 7(b) of the GNU Affero General Public License version 3,
 * these Appropriate Legal Notices must retain the display of the "Powered by
 * SugarCRM" logo. If the display of the logo is not reasonably feasible for
 * technical reasons, the Appropriate Legal Notices must display the words
 * "Powered by SugarCRM".
 ********************************************************************************/

// try to use the user's theme if we can figure it out
if ( isset($_REQUEST['themeName']) && SugarThemeRegistry::current()->name != $_REQUEST['themeName']) {
    SugarThemeRegistry::set($_REQUEST['themeName']);
} elseif ( isset($_SESSION['authenticated_user_theme']) ) {
    SugarThemeRegistry::set($_SESSION['authenticated_user_theme']);
}

while(substr_count($_REQUEST['imageName'], '..') > 0){
	$_REQUEST['imageName'] = str_replace('..', '.', $_REQUEST['imageName']);
}

if(isset($_REQUEST['spriteNamespace'])) {
	$filename = "cache/sprites/{$_REQUEST['spriteNamespace']}/{$_REQUEST['imageName']}";
	if(! file_exists($filename)) {
		header($_SERVER["SERVER_PROTOCOL"].' 404 Not Found');
		die;
	}
} else {
	$filename = SugarThemeRegistry::current()->getImageURL($_REQUEST['imageName']);
	if ( empty($filename) ) {
		header($_SERVER["SERVER_PROTOCOL"].' 404 Not Found');
		die;
	}
}

$filename_arr = explode('?', $filename);
$filename = $filename_arr[0];
$file_ext = substr($filename,-3);

$extensions = SugarThemeRegistry::current()->imageExtensions;
if(!in_array($file_ext, $extensions)){
	header($_SERVER["SERVER_PROTOCOL"].' 404 Not Found');
    die;
}


// try to use the content cached locally if it's the same as we have here.
if(defined('TEMPLATE_URL'))
	$last_modified_time = time();
else
	$last_modified_time = filemtime($filename);

$etag = '"'.md5_file($filename).'"';

header("Cache-Control: private");
header("Pragma: dummy=bogus");
header("Etag: $etag");
header('Expires: ' . gmdate('D, d M Y H:i:s \G\M\T', time() + 2592000));

$ifmod = isset($_SERVER['HTTP_IF_MODIFIED_SINCE'])
    ? strtotime($_SERVER['HTTP_IF_MODIFIED_SINCE']) >= $last_modified_time : null;
$iftag = isset($_SERVER['HTTP_IF_NONE_MATCH'])
    ? $_SERVER['HTTP_IF_NONE_MATCH'] == $etag : null;
if (($ifmod || $iftag) && ($ifmod !== false && $iftag !== false)) {
    header($_SERVER["SERVER_PROTOCOL"].' 304 Not Modified');
    die;
}

header("Last-Modified: ".gmdate('D, d M Y H:i:s \G\M\T', $last_modified_time));

// now send the content
if ( substr($filename,-3) == 'gif' )
    header("Content-Type: image/gif");
elseif ( substr($filename,-3) == 'png' )
    header("Content-Type: image/png");

if(!defined('TEMPLATE_URL')) {
    if(!file_exists($filename)) {
        sugar_touch($filename);
    }
}

readfile($filename);
