source: admin/update.php @ 166:9e19911313f2

<?php
# -- BEGIN LICENSE BLOCK ---------------------------------------
#
# This file is part of Dotclear 2.
#
# Copyright (c) 2003-2010 Olivier Meunier & Association Dotclear
# Licensed under the GPL version 2.0 license.
# See LICENSE file or
# http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
#
# -- END LICENSE BLOCK -----------------------------------------

require dirname(__FILE__).'/../inc/admin/prepend.php';

if (!defined('DC_BACKUP_PATH')) {
     define('DC_BACKUP_PATH',DC_ROOT);
}

dcPage::checkSuper();

if (!is_readable(DC_DIGESTS)) {
     dcPage::open(__('Dotclear update'));
     echo '<h2>Access denied</h2>';
     dcPage::close();
     exit;
}

$updater = new dcUpdate(DC_UPDATE_URL,'dotclear',DC_UPDATE_VERSION,DC_TPL_CACHE.'/versions');
$new_v = $updater->check(DC_VERSION);
$zip_file = $new_v ? DC_BACKUP_PATH.'/'.basename($updater->getFileURL()) : '';
$version_info = $new_v ? $updater->getInfoURL() : '';

# Hide "update me" message
if (!empty($_GET['hide_msg'])) {
     $updater->setNotify(false);
     http::redirect('index.php');
}

$p_url = 'update.php';

$step = isset($_GET['step']) ? $_GET['step'] : '';
$step = in_array($step,array('check','download','backup','unzip')) ? $step : '';

$archives = array();
foreach (files::scanDir(DC_BACKUP_PATH) as $v) {
     if (preg_match('/backup-([0-9A-Za-z\.-]+).zip/',$v)) {
          $archives[] = $v;
     }
}

# Revert or delete backup file
if (!empty($_POST['backup_file']) && in_array($_POST['backup_file'],$archives))
{
     $b_file = $_POST['backup_file'];
     
     try
     {
          if (!empty($_POST['b_del']))
          {
               if (!@unlink(DC_BACKUP_PATH.'/'.$b_file)) {
                    throw new Exception(sprintf(__('Unable to delete file %s'),html::escapeHTML($b_file)));
               }
               http::redirect($p_url);
          }
          
          if (!empty($_POST['b_revert']))
          {
               $zip = new fileUnzip(DC_BACKUP_PATH.'/'.$b_file);
               $zip->unzipAll(DC_BACKUP_PATH.'/');
               @unlink(DC_BACKUP_PATH.'/'.$b_file);
               http::redirect($p_url);
          }
     }
     catch (Exception $e)
     {
          $core->error->add($e->getMessage());
     }
}

# Upgrade process
if ($new_v && $step)
{
     try
     {
          $updater->setForcedFiles('inc/digests');
          
          switch ($step)
          {
               case 'check':
                    $updater->checkIntegrity(DC_ROOT.'/inc/digests',DC_ROOT);
                    http::redirect($p_url.'?step=download');
                    break;
               case 'download':
                    $updater->download($zip_file);
                    if (!$updater->checkDownload($zip_file)) {
                         throw new Exception(
                              sprintf(__('Downloaded Dotclear archive seems to be corrupted. '.
                              'Try <a %s>download it</a> again.'),'href="'.$p_url.'?step=download"')
                         );
                    }
                    http::redirect($p_url.'?step=backup');
                    break;
               case 'backup':
                    $updater->backup(
                         $zip_file, 'dotclear/inc/digests',
                         DC_ROOT, DC_ROOT.'/inc/digests',
                         DC_BACKUP_PATH.'/backup-'.DC_VERSION.'.zip'
                    );
                    http::redirect($p_url.'?step=unzip');
                    break;
               case 'unzip':
                    $updater->performUpgrade(
                         $zip_file, 'dotclear/inc/digests', 'dotclear',
                         DC_ROOT, DC_ROOT.'/inc/digests'
                    );
                    break;
          }
     }
     catch (Exception $e)
     {
          $msg = $e->getMessage();
          if ($e->getCode() == dcUpdate::ERR_FILES_CHANGED)
          {
               $msg =
               __('The following files of your Dotclear installation '.
               'have been modified so we won\'t try to update your installation. '.
               'Please try to <a href="http://dotclear.org/download">update manually</a>.');
          }
          elseif ($e->getCode() == dcUpdate::ERR_FILES_UNREADABLE)
          {
               $msg =
               sprintf(__('The following files of your Dotclear installation are not readable. '.
               'Please fix this or try to make a backup file named %s manually.'),
               '<strong>backup-'.DC_VERSION.'.zip</strong>');
          }
          elseif ($e->getCode() == dcUpdate::ERR_FILES_UNWRITALBE)
          {
               $msg =
               __('The following files of your Dotclear installation cannot be written. '.
               'Please fix this or try to <a href="http://dotclear.org/download">update manually</a>.');
          }
          
          if (isset($e->bad_files)) {
               $msg .=
               '<ul><li><strong>'.
               implode('</strong></li><li><strong>',$e->bad_files).
               '</strong></li></ul>';
          }
          
          $core->error->add($msg);
     }
}

/* DISPLAY Main page
-------------------------------------------------------- */
dcPage::open(__('Dotclear update'));

if (!$core->error->flag()) {
     echo '<h2>'.__('Dotclear update').'</h2>';
}

if (!$step)
{
     if (empty($new_v))
     {
          echo '<p><strong>'.__('No newer Dotclear version available.').'</strong></p>';
     }
     else
     {
          echo
               '<p class="static-msg">'.sprintf(__('Dotclear %s is available.'),$new_v).
                    ($version_info ? ' <a href="'.$version_info.'">('.__('information about this version').')</a>' : '').
                    '</p>'.
          
          '<p>'.__('To upgrade your Dotclear installation simply click on the following button. '.
               'A backup file of your current installation will be created in your root directory.').'</p>'.
          '<form action="'.$p_url.'" method="get">'.
          '<p><input type="hidden" name="step" value="check" />'.
          '<input type="submit" value="'.__('Update Dotclear').'" /></p>'.
          '</form>';
     }
     
     if (!empty($archives))
     {
          echo
          '<h3>'.__('Update backup files').'</h3>'.
          '<p>'.__('The following files are backups of previously updates. '.
          'You can revert your previous installation or delete theses files.').'</p>';
          
          echo '<form action="'.$p_url.'" method="post">';
          
          foreach ($archives as $v) {
               echo
               '<p><label class="classic">'.form::radio(array('backup_file'),html::escapeHTML($v)).' '.
               html::escapeHTML($v).'</label></p>';
          }
          
          echo
          '<p><strong>'.__('Please note that reverting your Dotclear version may have some '.
          'unwanted side-effects. Consider reverting only if you experience strong issues with this new version.').'</strong> '.
          sprintf(__('You should not revert to version prior to last one (%s).'),end($archives)).
          '</p>'.
          '<p><input type="submit" class="delete" name="b_del" value="'.__('Delete selected file').'" /> '.
          '<input type="submit" name="b_revert" value="'.__('Revert to selected file').'" />'.
          $core->formNonce().'</p>'.
          '</form>';
     }
}
elseif ($step == 'unzip' && !$core->error->flag())
{
     echo
     '<p class="message">'.
     __("Congratulations, you're one click away from the end of the update.").
     ' <strong><a href="index.php?logout=1">'.__('Finish the update.').'</a></strong>'.
     '</p>';
}

dcPage::close();
?>