WB 2.08.x

<?php

/**

 * $Id$

 * Website Baker Add-On precheck functions

 *

 * This file contains the functions of the pretest performed upfront

 * of the Add-On installation process. The functions allows developers

 * to specify requirements for their Add-On.

 *

 * LICENSE: GNU Lesser General Public License 3.0

 * 

 * @author		Christian Sommer

 * @copyright	(c) 2009

 * @license		http://www.gnu.org/copyleft/lesser.html

 * @version		0.2.3

 * @platform	Website Baker 2.7

 *

 * Website Baker Project <http://www.websitebaker.org/>

 * Copyright (C) 2004-2009, Ryan Djurovich

 *

 * Website Baker 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.

 *

 * Website Baker 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 Website Baker; if not, write to the Free Software

 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

*/

// prevent this file from being accessed directly

if (!defined('WB_PATH')) die(header('Location: ../index.php'));

function getVersion($version, $strip_suffix = true)

{

	/**

	 * This funtion creates a version string following the major.minor.revision convention

	 * The minor and revision part of the version may not exceed 999 (three digits)

	 * An optional suffix part can be added after revision (requires $strip_suffix = false)

	 *

	 * EXAMPLES: input --> output

	 *	5 --> 5.000000; 5.0 --> 5.000000; 5.0.0 --> 5.000000

	 * 	5.2 --> 5.002000; 5.20 --> 5.002000; 5.2.0 --> 5.002000

	 * 	5.21 --> 5.002001; 5.2.1 --> 5.002001;

	 * 	5.27.1 --> 5.027001; 5.2.71 --> 5.002071;

	 * 	5.27.1 rc1 --> 5.027001_RC1 ($strip_suffix:= false)

	 */

	// replace comma by decimal point

	$version = str_replace(',', '.', $version);

	// convert version into major.minor.revision numbering system

	list($major, $minor, $revision) = explode('.', $version, 3);

	// convert versioning style 5.21 into 5.2.1

	if ($revision == '' && strlen(intval($minor)) == 2) {

		$revision = substr($minor, -1);

		$minor = substr($minor, 0, 1);

	}

	// extract possible non numerical suffix from revision part (e.g. Alpha, Beta, RC1)

	$suffix = strtoupper(trim(substr($revision, strlen(intval($revision)))));

	// return standard version number (minor and revision numbers may not exceed 999)

	return (int) $major . '.' . sprintf('%03d', (int) $minor) . sprintf('%03d', (int) $revision) . 

		(($strip_suffix == false && $suffix != '') ? '_' . $suffix : '');

}

/**

 *	As "version_compare" it self seems only got trouble 

 *	within words like "Alpha", "Beta" a.s.o. this function

 *	only modify the version-string in the way that these words are replaced by values/numbers.

 *

 *	E.g:	"1.2.3 Beta2" => "1.2.322"

 *			"0.1.1 ALPHA" => "0.1.11"

 *

 *	Notice:	Please keep in mind, that this will not correct the way "version_control" 

 *			handel "1 < 1.0 < 1.0.0 < 1.0.0.0" and will not correct missformed version-strings

 *			below 2.7, e.g. "1.002 released candidate 2.3"

 *			

 *	@since	2.8.0 RC2

 *

 *	@param	string	A versionstring

 *	@return	string	The modificated versionstring

 *

 */

function getVersion2 ($version="") {

	$states = array (

		'1' => "alpha",

		'2' => "beta",

		'4' => "rc",

		'8' => "final"	

	);

	$version = strtolower($version);

	foreach($states as $value=>$keys) $version = str_replace($keys, $value, $version);

	$version = str_replace(" ", "", $version);

	return $version;

}

function versionCompare($version1, $version2, $operator = '>=')

{

	/**

	 * This funtion performs a comparison of two provided version strings

	 * The versions are first converted into a string following the major.minor.revision 

	 * convention and performs a version_compare afterwards.

	 */

	// return version_compare(getVersion($version1), getVersion($version2), $operator);

	return version_compare(getVersion2($version1), getVersion2($version2), $operator);

}

function sortPreCheckArray($precheck_array)

{

	/**

	 * This funtion sorts the precheck array to a common format

	 */

	// define desired precheck order

	$key_order = array('WB_VERSION', 'WB_ADDONS', 'PHP_VERSION', 'PHP_EXTENSIONS', 'PHP_SETTINGS', 'CUSTOM_CHECKS');

	$temp_array = array();

	foreach($key_order as $key) {

		if (!isset($precheck_array[$key])) continue;

		$temp_array[$key] = $precheck_array[$key];

	}

	return $temp_array;

}

function preCheckAddon($temp_addon_file)

{

	/**

	 * This funtion performs pretest upfront of the Add-On installation process.

	 * The requirements can be specified via the array $PRECHECK which needs to

	 * be defined in the optional Add-on file precheck.php.

	 */

	global $database, $admin, $TEXT, $HEADING, $MESSAGE;

	// path to the temporary Add-on folder

	$temp_path = WB_PATH . '/temp/unzip';

	// check if file precheck.php exists for the Add-On uploaded via WB installation routine

	if (!file_exists($temp_path . '/precheck.php')) return;

	// unset any previous declared PRECHECK array

	unset($PRECHECK);

	// include Add-On precheck.php file

	include($temp_path . '/precheck.php');

	// check if there are any Add-On requirements to check for

	if (!(isset($PRECHECK) && count($PRECHECK) > 0)) return;

	// sort precheck array

	$PRECHECK = sortPreCheckArray($PRECHECK);

	$failed_checks = 0;

	$msg = array();

	// check if specified addon requirements are fullfilled

	foreach ($PRECHECK as $key => $value) {

		switch ($key) {

			case 'WB_VERSION':

				if (isset($value['VERSION'])) {

					// obtain operator for string comparison if exist

					$operator = (isset($value['OPERATOR']) &&  trim($value['OPERATOR']) != '') ? $value['OPERATOR'] : '>=';

					// compare versions and extract actual status

					$status = versionCompare(WB_VERSION, $value['VERSION'], $operator);

					$msg[] = array(

						'check'		=> 'WB-' . $TEXT['VERSION'] .': ',

						'required'	=> htmlentities($operator) . $value['VERSION'],

						'actual'	=> WB_VERSION,

						'status'	=> $status

					);

					// increase counter if required

					if (!$status) $failed_checks++;

				}

				break;

			case 'WB_ADDONS':

				if (is_array($PRECHECK['WB_ADDONS'])) {

					foreach($PRECHECK['WB_ADDONS'] as $addon => $values) {

						if (is_array($values)) {

							// extract module version and operator

							$version = (isset($values['VERSION']) &&  trim($values['VERSION']) != '') ? $values['VERSION'] : '';

							$operator = (isset($values['OPERATOR']) &&  trim($values['OPERATOR']) != '') ? $values['OPERATOR'] : '>=';

						} else {

							// no version and operator specified (only check if addon exists)

							$addon = strip_tags($values);

							$version = ''; $operator = '';

						}

						// check if addon is listed in WB database

						$table = TABLE_PREFIX . 'addons';

						$sql = "SELECT * FROM `$table` WHERE `directory` = '" . addslashes($addon) . "'";

						$results = $database->query($sql);

						$status = false; $addon_status = $TEXT['NOT_INSTALLED'];

						if ($results && $row = $results->fetchRow()) {

							$status = true; 

							$addon_status = $TEXT['INSTALLED'];

							// compare version if required

							if ($version != '') {

								$status = versionCompare($row['version'], $version, $operator);

								$addon_status = $row['version'];

							}

						}

						// provide addon status

						$msg[] = array(

							'check'		=> '  ' . $TEXT['ADDON'] . ': ' . htmlentities($addon),

							'required'	=> ($version != '') ? $operator . ' ' . $version : $TEXT['INSTALLED'],

							'actual'	=> $addon_status,

							'status'	=> $status

						);

						// increase counter if required

						if (!$status) $failed_checks++;

					}

				}

				break;

			case 'PHP_VERSION':

				if (isset($value['VERSION'])) {

					// obtain operator for string comparison if exist

					$operator = (isset($value['OPERATOR']) &&  trim($value['OPERATOR']) != '') ? $value['OPERATOR'] : '>=';

					// compare versions and extract actual status

					$status = versionCompare(PHP_VERSION, $value['VERSION'], $operator);

					$msg[] = array(

						'check'		=> 'PHP-' . $TEXT['VERSION'] .': ',

						'required'	=> htmlentities($operator) . ' ' . $value['VERSION'],

						'actual'	=> PHP_VERSION,

						'status'	=> $status

					);

					// increase counter if required

					if (!$status) $failed_checks++;

				}

				break;

			case 'PHP_EXTENSIONS':

				if (is_array($PRECHECK['PHP_EXTENSIONS'])) {

					foreach($PRECHECK['PHP_EXTENSIONS'] as $extension) {

						$status = extension_loaded(strtolower($extension));

						$msg[] = array(

							'check'		=> '  ' . $TEXT['EXTENSION'] . ': ' . htmlentities($extension),

							'required'	=> $TEXT['INSTALLED'],

							'actual'	=> ($status) ? $TEXT['INSTALLED'] : $TEXT['NOT_INSTALLED'],

							'status'	=> $status

						);

						// increase counter if required

						if (!$status) $failed_checks++;

					}

				}

				break;

			case 'PHP_SETTINGS':

				if (is_array($PRECHECK['PHP_SETTINGS'])) {

					foreach($PRECHECK['PHP_SETTINGS'] as $setting => $value) {

						$actual_setting = ($temp = ini_get($setting)) ? $temp : 0;

						$status = ($actual_setting == $value);

						$msg[] = array(

							'check'		=> '  '. ($setting),

							'required'	=> $value,

							'actual'	=> $actual_setting,

							'status'	=> $status

						);

						// increase counter if required

						if (!$status) $failed_checks++;

					}

				}

				break;

			case 'CUSTOM_CHECKS':

				if (is_array($PRECHECK['CUSTOM_CHECKS'])) {

					foreach($PRECHECK['CUSTOM_CHECKS'] as $key => $values) {

						$status = (true === array_key_exists('STATUS', $values )) ? $values['STATUS'] : false;

						$msg[] = array(

							'check'		=> $key,

							'required'	=> $values['REQUIRED'],

							'actual'	=> $values['ACTUAL'],

							'status'	=> $status

						);

					}

					// increase counter if required

					if (!$status) $failed_checks++;

				}

				break;

		}

	}

	// leave if all requirements are fullfilled

	if ($failed_checks == 0) return;

	// output summary table with requirements not fullfilled

	echo <<< EOT

	<h2>{$HEADING['ADDON_PRECHECK_FAILED']}</h2>

	<p>{$MESSAGE['ADDON']['PRECHECK_FAILED']}</p> 

	<table width="700px" cellpadding="4" border="0" style="margin: 0.5em; border-collapse: collapse; border: 1px solid silver;">

	<tr>

		<th>{$TEXT['REQUIREMENT']}:</th>

		<th>{$TEXT['REQUIRED']}:</th>

		<th>{$TEXT['CURRENT']}:</th>

	</tr>

EOT;

	foreach($msg as $check) {

		echo '<tr>';

		$style = $check['status'] ? 'color: #46882B;' : 'color: #C00;';

		foreach($check as $key => $value) {

			if ($key == 'status') continue;

			echo '<td style="' . $style . '">' . $value . '</td>';

		}

		echo '</tr>';

	}

	echo '</table>';

	// delete the temp unzip directory

	rm_full_dir($temp_path);	

	// delete the temporary zip file of the Add-on

	if(file_exists($temp_addon_file)) { unlink($temp_addon_file); }	

	// output status message and die

	$admin->print_error('');

}