<?php
/*
 * Gallery - a web based photo album viewer and editor
 * Copyright (C) 2000-2008 Bharat Mediratta
 *
 * 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., 51 Franklin Street - Fifth Floor, Boston, MA  02110-1301, USA.
 */

/**
 * Upgrade core module
 * @package Upgrade
 */
class UpgradeCoreModuleStep extends UpgradeStep {
    function stepName() {
	return _('Upgrade Core');
    }

    function processRequest() {
	global $gallery;
	$gallery->startRecordingDebugSnippet();

	/*
	 * We'll need a translator to load up the core module for the
	 * GalleryPlugin::setGroup() method to work.
	 */
	$translator =& $gallery->getTranslator();
	if (empty($translator)) {
	    $ret = $gallery->initTranslator(true /* dontUseDatabase */ );
	    if ($ret) {
		return true;
	    }
	}

	require_once(dirname(__FILE__) . '/../../modules/core/module.inc');
	require_once(dirname(__FILE__) . '/../../modules/core/CoreModuleExtras.inc');
	$core = new CoreModule();
	$versions = $core->getInstalledVersions();

	/* We didn't have these values before 2.0-alpha-3 when the core version was 0.8 */
	if (!isset($versions['core'])) {
	    $versions['core'] = '0.8';
	}
	if (!isset($versions['gallery'])) {
	    $versions['gallery'] = '2.0-alpha-3';
	}

	$templateData['installed'] = $versions;
	$templateData['coreVersion'] = $core->getVersion();
	$templateData['galleryVersion'] = $core->getGalleryVersion();
	$templateData['storeConfig'] = $gallery->getConfig('storage.config');

	$templateData['isConfigUpgradeRequired'] =
	    CoreModuleExtras::isConfigUpgradeRequired($versions['core']);
	$platform =& $gallery->getPlatform();
	$configFilePath = GALLERY_CONFIG_DIR . '/config.php';
	$templateData['isConfigWriteable'] = $platform->is_writeable($configFilePath);
	$templateData['canChmod'] = strncasecmp(PHP_OS, 'win', 3);

	$template = new StatusTemplate();

	if (isset($_POST['confirm'])) {
	    /* We want to log all debug output in our upgrade log */
	    $this->_startDebugLog('Upgrade Core Module');
	    $this->_addSystemInformationToDebugLog($versions);

	    $template->renderHeader(true);
	    $ret = selectAdminUser(true);
	    if (!$ret) {
		/*
		 * Do the upgrade in bootstrap mode so that we avoid going to the
		 * database for anything that's not vital.
		 */
		$ret = $core->installOrUpgrade(true, $template);
		if (!$ret) {
		    list ($ret,  $ignored) = $core->activate();
		    if (!$ret) {
			$storage =& $gallery->getStorage();
			$ret = $storage->commitTransaction();

			if (!$ret && $templateData['isConfigUpgradeRequired']) {
			    $ret = CoreModuleExtras::performConfigUpgrade($versions['core']);
			}
		    }
		}
	    } else {
		$gallery->debug('Unable to selectAdminUser for core upgrade: ' . $ret->getAsText());
	    }

	    $this->resetL10Domain();
	    if ($ret) {
		$templateData['stackTrace'] = $ret->getAsHtml();
		$templateData['debug'] = $gallery->stopRecordingDebugSnippet();
		$templateData['bodyFile'] = 'UpgradeCoreModuleError.html';
	    } else {
		$templateData['bodyFile'] = 'UpgradeCoreModuleSuccess.html';
		$this->setComplete(true);
		$this->_performedUpgrade = true;
	    }
	    $template->hideStatusBlock();
	} else {
	    $template->renderHeader();
	    if (($cmp = version_compare($versions['core'], $core->getVersion())) == 0) {
		$templateData['bodyFile'] = isset($this->_performedUpgrade)
		    ? 'UpgradeCoreModuleSuccess.html' : 'UpgradeCoreModuleUpToDate.html';
		$this->setComplete(true);
	    } else {
		/* The core module requires an upgrade */
		$templateData['bodyFile'] = 'UpgradeCoreModuleRequest.html';
		$this->setComplete(false);

		if ($cmp != -1) {
		    /*
		     * The new version is older than the installed version, don't
		     * let the user continue this silly attempt to break his G2
		     */
		    $templateData['isTryingToDowngrade'] = 1;
		}
	    }
	}

	if ($templateData['canChmod']
		&& $templateData['bodyFile'] == 'UpgradeCoreModuleSuccess.html') {
	    $stat = $platform->stat($configFilePath);
	    $templateData['isConfigSecure'] = !($stat['mode'] & 022);
	    $templateData['configFileMode'] = substr(sprintf('%o', $stat['mode']), -3);
	    $templateData['configFilePath'] = $configFilePath;
	}

	$template->renderBodyAndFooter($templateData);
	return false;
    }

    function _addSystemInformationToDebugLog($versions) {
	global $gallery;
	$storage =& $gallery->getStorage();
	$isSvnInstall = file_exists(dirname(dirname(dirname(__FILE__))) . '/.svn');
	$fileIntegrity = isset($_SESSION['fileintegrity']) ? $_SESSION['fileintegrity'] : 'Unknown';

	$gallery->debug("\n
--------------------------------------------------------
System and Gallery information:
--------------------------------------------------------
    Gallery version:\t" . $versions['gallery'] . "
    File integrity:\t" . $fileIntegrity . "
    SVN install:\t" . ($isSvnInstall ? 'Yes' : 'No') . "
    PHP version:\t" . phpversion() . " " . php_sapi_name() . "
    PHP memory limit:\t" . ini_get('memory_limit') . "
    PHP disable_functions:\t" . ini_get('disable_functions') . "
    PHP zend.ze1_compatibility_mode:\t" . ini_get('zend.ze1_compatibility_mode') . "
    Webserver:\t" . GalleryUtilities::getServerVar('SERVER_SOFTWARE') . "
    Database:\t" . $storage->getAdoDbType() . " " . @$storage->getVersion() . "
    Operating system:\t" . php_uname() . "
    Browser:\t " . GalleryUtilities::getServerVar('HTTP_USER_AGENT') . "
--------------------------------------------------------\n\n
");
    }
}
?>