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update.php
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update.php
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<?php
/**
* EPESI Core updater.
*
* @author Adam Bukowski <[email protected]> and Pawel Bukowski <[email protected]>
* @version 2.0
* @copyright Copyright © 2014, Telaxus LLC
* @license MIT
* @package epesi-base
*/
defined("_VALID_ACCESS") || define("_VALID_ACCESS", true);
class EpesiPackageDownloader
{
private $versions;
private function __construct()
{
self::check_system_requirements();
}
public static function instance()
{
static $instance;
if ($instance === null) {
$instance = new self();
}
return $instance;
}
public function get_update_json()
{
$ret = self::download('http://ess.epe.si/update.json');
$update_json = @json_decode($ret, true);
if ($update_json === null) {
throw new ErrorException('Cannot decode update.json file: ' . $ret);
}
return $update_json;
}
public function get_versions()
{
if (!$this->versions) {
$update_json = $this->get_update_json();
if (!isset($update_json['files'])) {
throw new ErrorException('No files defined in update.json');
}
$this->versions = $update_json['files'];
}
return $this->versions;
}
public function get_latest_package_info()
{
$versions = $this->get_versions();
$latest = end($versions);
return $latest;
}
public function get_package_info($current_revision, $offset)
{
$versions = $this->get_versions();
$found = false;
$skip_update = ($offset != 0);
foreach ($versions as $v) {
if ($found == false && $v['revision'] == $current_revision) {
$found = true;
if ($offset == 0) {
return $v;
}
$offset -= 1;
continue;
}
if ($found) {
if ($skip_update && isset($v['skip']) && $v['skip']) continue;
if ($offset == 0) {
return $v;
}
$offset -= 1;
}
}
return false;
}
public function download_package($current_revision, $offset)
{
$package_info = $this->get_package_info($current_revision, $offset);
if (!$package_info) {
return false;
}
foreach (array('file', 'checksum', 'signature') as $key) {
if (!isset($package_info[$key])) {
throw new ErrorException("Missing '$key' in package info");
}
}
$filename = EPESI == 'EPESI' ? 'epesi' : 'update';
$package_file = "$filename-$package_info[version]-$package_info[revision].ei.zip";
$file_exists = file_exists($package_file);
if (!$file_exists) {
self::download($package_info['file'], $package_file);
}
$package_checksum = sha1_file($package_file);
if ($package_info['checksum'] != $package_checksum) {
throw new ErrorException("Checksum mismatch. Downloaded=$package_checksum, should be=$package_info[checksum]");
}
$verify_status = openssl_verify(file_get_contents($package_file), base64_decode($package_info['signature']), self::get_public_key(), OPENSSL_ALGO_SHA256);
if ($verify_status === 0) {
throw new ErrorException("Signature incorrect");
}
if ($verify_status === -1) {
$error_string = openssl_error_string();
if (!$error_string) {
$error_string = 'no error string reported';
}
throw new ErrorException("Signature verify error: " . $error_string);
}
return new EpesiUpdatePackage($package_file);
}
public function get_update_package_info($current_revision)
{
$package_info = $this->get_package_info($current_revision, 1);
return $package_info;
}
public function get_update_package($current_revision)
{
return $this->download_package($current_revision, 1);
}
public function get_current_package($current_revision)
{
return $this->download_package($current_revision, 0);
}
public static function get_public_key()
{
$PUBLIC_KEY = <<<KEY
-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAvWFAZMVAGr3fPNK0v9Vt
IErRSpl4I3wIWTr1kybpY8/+j9IX/t9qLvOPY4OVrkzURmKvS+VbSU8MSYZz9QIL
TJUmNYkkyqJieSpQCq/7x5J2it+i1TeGKk8m3sOpL17+NUa/1e8a4W6FmLl9hwLd
8TQnlVQJIva3JXA46S1E3BNPbaWdQrwABs5xGUterE890+rW63/pgD1pT1qEbmif
oiTuG+dyhCo+REcjo8YWIpi+8BNJoo3Nn7Xxi71yA2Ps8DElIjjNRa/ca5A6SE61
euoJaHtTSc7OsuDug2Rv0aQkvR7OmFyfIJAdAasZHWePWeuezlKJAAcvNFdjZ0Zw
KwIDAQAB
-----END PUBLIC KEY-----
KEY;
return $PUBLIC_KEY;
}
public static function download($fileurl, $file = null) {
$ch = curl_init($fileurl);
curl_setopt($ch, CURLOPT_VERBOSE, 0);
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_TIMEOUT, 50);
curl_setopt($ch, CURLOPT_TIMEOUT, 300);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
if ($file) {
$f = fopen($file, 'w');
if ($f === false) {
throw new ErrorException("Cannot write into file: $file");
}
curl_setopt($ch, CURLOPT_FILE, $f);
} else {
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
}
$output = curl_exec($ch);
$error_message = curl_error($ch);
curl_close($ch);
if ($file) {
fclose($f);
}
if ($error_message != '') throw new ErrorException($error_message);
return $output;
}
public static function check_system_requirements()
{
if (!class_exists('ZipArchive')) {
throw new ErrorException('Missing zip extension');
}
if (!function_exists('curl_init')) {
throw new ErrorException('Missing cURL extension');
}
}
}
class EpesiUpdatePackage
{
private $file;
private $zip;
public function __construct($file)
{
$this->file = $file;
$this->zip = new ZipArchive();
$status = $this->zip->open($file);
if ($status !== true) {
throw new ErrorException(__('Zip %s open error: %s', array($this->file,$status)));
}
}
public function __destruct()
{
$this->zip->close();
}
public function delete()
{
@unlink($this->file);
}
public function get_file()
{
return $this->file;
}
public function files_not_writable()
{
$problems = array();
for ($i = 0; $i < $this->zip->numFiles; $i++) {
$stat = $this->zip->statIndex($i);
$f = './' . $stat['name'];
if (file_exists($f)) {
if (!is_writable($f)) {
$problems[] = $f;
}
} else {
$up_f = basename($f);
if (file_exists($up_f) && !is_writable($up_f)) {
$problems[] = $up_f;
}
}
}
return $problems;
}
public function files_modified()
{
$problems = array();
for ($i = 0; $i < $this->zip->numFiles; $i++) {
$stat = $this->zip->statIndex($i);
$f = './' . $stat['name'];
if (file_exists($f)) {
$system_file_checksum = sprintf("%u", hexdec(hash_file('crc32b', $f)));
$archive_file_checksum = sprintf("%u", $stat['crc']);
if ($system_file_checksum != $archive_file_checksum) {
$problems[] = $f;
}
}
}
return $problems;
}
public function extract()
{
$success = $this->zip->extractTo('./');
return $success;
}
public function wipe() {
for ($i = 0; $i < $this->zip->numFiles; $i++) {
$stat = $this->zip->statIndex($i);
$f = './' . $stat['name'];
if (file_exists($f) && !is_dir($f)) {
unlink($f);
}
}
}
public function create_backup_of_modified_files()
{
$files = $this->files_modified();
if (empty($files)) {
return '';
}
$release_package = substr($this->file, 0, -4);
do {
$random_string = substr(str_shuffle("0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ"), 0, 12);
$backup_file = "modified_since_{$release_package}_{$random_string}.bkp.zip";
} while (file_exists($backup_file));
$b = new Backup($backup_file);
$b->create($files, "Modified files backup");
return $backup_file;
}
}
class EpesiUpdate
{
public function run()
{
try {
$this->load_epesi();
if ($this->check_user()) {
if (!epesi_requires_update()) {
if ($this->handle_update_package() == false) {
$this->version_up_to_date();
}
}
$this->update_process();
} else {
$this->require_admin_login();
}
} catch (Exception $ex) {
$this->quit('Exception occured: ' . $ex->getMessage());
}
}
protected function load_epesi()
{
$this->CLI = (php_sapi_name() == 'cli');
if ($this->CLI) {
global $argv;
// allow to define DATA directory for CLI in argument
if (isset($argv)) {
define('EPESI_DIR','/');
foreach (array_slice($argv, 1) as $x) {
if ($x == '-f') {
$this->cli_force_update = true;
} elseif ($x == '-b') {
$this->cli_create_backup = true;
} else {
define('DATA_DIR', $x);
}
}
}
}
define('CID', false);
require_once 'include.php';
require_once 'include/backups.php';
// Enable all disabled modules
// check if method exists, because we recommend to use this update
// script on older installations where method was not present
if (method_exists('ModuleManager', 'enable_modules')) {
ModuleManager::enable_modules(ModuleManager::MODULE_NOT_FOUND);
}
ModuleManager::load_modules();
Base_LangCommon::load();
$this->system_version = Variable::get('version');
$this->current_version = EPESI_VERSION;
$this->current_revision = EPESI_REVISION;
}
protected function quit($msg)
{
if ($this->CLI) {
die(strip_tags($msg) . "\n");
} else {
$this->body($msg);
die();
}
}
protected function check_user()
{
if ($this->CLI) {
Base_AclCommon::set_sa_user();
if (!Base_AclCommon::i_am_sa()) {
$this->quit('No proper admin user.');
}
}
return Base_AclCommon::i_am_sa();
}
public function version_up_to_date()
{
$net_blocked = $this->net_update_blocked();
$net_blocked_msg = __('Network update has been blocked.');
$msg = __('Your %s does not require update', array(EPESI));
if ($this->CLI) {
if ($net_blocked) print ($net_blocked_msg . "\n");
print ($msg . "\n");
print (__('Update procedure forced') . "\n");
} else {
if ($net_blocked) $msg .= '<br><br>' . $net_blocked_msg;
$msg .= $this->saved_backups_list();
$this->quit($msg);
}
}
public function saved_backups_list()
{
$files = array();
foreach (glob('*.bkp.zip') as $f) $files[$f] = new Backup($f);
if (isset($_GET['delete']) && isset($files[$_GET['delete']]) && file_exists($_GET['delete'])) {
unlink($_GET['delete']);
unset($files[$_GET['delete']]);
$this->redirect(array());
}
uasort($files, function(Backup $a, Backup $b) { return $a->get_date() > $b->get_date();});
$backups = '';
foreach ($files as $file => $backup) {
$download_url = urlencode($file);
$download = "<a target=\"_blank\" href=\"$download_url\">[" . __('Download') . "]</a>";
$delete_href = '?' . http_build_query(array('delete' => $file));
$delete = "<a href=\"$delete_href\">[" . __('Delete') . "]</a>";
$description = date("Y-m-d H:i:s", $backup->get_date()) . " - $file $download $delete";
$backups .= "$description<br>";
}
$ret = '';
if ($backups) {
$ret = "<h3>" . __('Backups') . "</h3><p>$backups</p>";
}
return $ret;
}
protected function require_admin_login()
{
$msg = '<p><strong>' . __("You need to be logged in as super admin use this script.") . '</strong></p>';
$msg .= $this->login_form();
$this->quit($msg);
}
protected function login_form()
{
if (Base_AclCommon::i_am_user() && !Base_AclCommon::i_am_sa()) {
Base_User_LoginCommon::logout();
}
$form = SimpleLogin::form();
return "<p>$form</p>";
}
protected function cli_msg($msg)
{
if ($this->CLI) {
print ($msg . "\n");
}
}
protected function net_update_blocked()
{
return file_exists('.git') || file_exists('.noupdate');
}
protected function get_update_package()
{
if ($this->net_update_blocked()) {
return false;
}
return EpesiPackageDownloader::instance()->get_update_package_info($this->current_revision);
}
protected function handle_update_package()
{
$update_package_info = $this->get_update_package();
if ($update_package_info) {
if (!$this->CLI && (TRIAL_MODE || DEMO_MODE)) {
$this->quit(__('There is an update, but you don\'t have permissions to perform it. Please contact system administrator.'));
}
$latest_package_info = EpesiPackageDownloader::instance()->get_latest_package_info();
$latest_version = $update_package_info['revision'] == $latest_package_info['revision'];
$this->cli_msg("There is update package...");
$action = false;
if ($this->CLI) $action = 'get';
if (isset($_GET['action'])) $action = $_GET['action'];
if ($action) {
$this->cli_msg("Downloading update package: $update_package_info[version]-$update_package_info[revision]...");
$update_package = EpesiPackageDownloader::instance()->get_update_package($this->current_revision);
$problems = $update_package->files_not_writable();
if ($problems) {
$this->quit('<p><strong>' . __('Files not writable (please fix permissions)') . ':</strong></p>'."\n" . implode("<br>\n", $problems));
}
$this->cli_msg("Downloading current release package...");
$current_package = EpesiPackageDownloader::instance()->get_current_package($this->current_revision);
if (!$current_package) {
throw new ErrorException('Cannot download current package');
}
$this->cli_msg("Looking for changes or permissions problems...");
$problems = $current_package->files_not_writable();
if ($problems) {
$this->quit('<p><strong>' . __('Files not writable (please fix permissions)') . ':</strong></p>'."\n" . implode("<br>\n", $problems));
}
if ($this->CLI) {
$problems = $current_package->files_modified();
if ($problems) {
$this->cli_msg("Modified files:\n" . implode("\n", $problems));
if ($this->cli_create_backup) {
$this->cli_msg('Creating backup of modified files');
$backup_file = $current_package->create_backup_of_modified_files();
$this->cli_msg("Backup saved to: $backup_file");
}
if ($this->cli_force_update) {
$this->cli_msg('Update forced!');
} else {
$this->quit('Use -f switch to force update, -b to create backup of modified files. Both -f -b to backup and update');
}
}
} else {
if ($action == 'update') {
// do nothing
} elseif ($action == 'backup') {
$backup_file = $current_package->create_backup_of_modified_files();
$backup_msg = '<p><strong>' . __('Backup has been made') . '</strong></p>' . "\n";
$backup_msg .= '<br>' . '<p>' . __('Your backup is in the file: %s', array($backup_file)) . "</p>\n";
$backup_msg .= '<br>' . '<p><a class="button" href="?action=update">' . __('Update!') . '</a></p>';
$this->quit($backup_msg);
} else {
$problems = $current_package->files_modified();
if ($problems) {
$create_backup_msg = '<p><strong>' . __('Files with custom modifications') . ':</strong></p>' . "\n" . implode("<br>\n", $problems);
$create_backup_msg .= '<br>' . '<p><a class="button" href="?action=backup">' . __('Backup modified files!') . '</a></p>';
$this->quit($create_backup_msg);
}
}
}
$this->turn_on_maintenance_mode();
$this->cli_msg("Wipe current files...");
$current_package->wipe();
$this->cli_msg("Extract new files...");
if ($update_package->extract()) {
$this->cli_msg("Delete package files...");
$current_package->delete();
if ($latest_version) {
$update_package->delete();
}
$this->cli_msg("Patches redirect...");
$this->redirect(array());
} else {
$current_package->extract();
$this->quit(__('Extract error occured'));
}
} else {
$header = __('Update package available to download!');
$version_with_revision = "$this->current_version-$this->current_revision";
$update_info = "$update_package_info[version]-$update_package_info[revision]";
$current_ver = __('Your current %s version', array(EPESI)) . ': <strong>' . $version_with_revision . '</strong>';
$text_p = __('Update Package') . ': <strong>' . $update_info . '</strong>';
$warning_message = __('All core files will be replaced!') . '<br/><br/>'
. __('If you have changed any of those files, then we will backup them first.');
$info_message = __('Custom modules and your data will be preserved.');
$msg = "<p><strong>$header</strong></p><p>$current_ver</p><p>$text_p</p>";
$msg .= "<p style=\"color: red; font-weight: bold\">$warning_message</p>";
$msg .= "<p style=\"font-weight: bold\">$info_message</p>";
$msg .= '<p><a class="button" href="?action=get">' . __('Download!') . '</a></p>';
$this->quit($msg);
}
}
return false;
}
protected function update_process()
{
@set_time_limit(0);
// console
if ($this->CLI) {
PatchUtil::disable_time_management();
$this->perform_update_start();
$this->perform_update_patches(false);
$this->perform_update_end();
$update_package = $this->get_update_package();
if ($update_package) $this->redirect(array());
$this->quit(__('Done'));
}
// browser
$up = & $_GET['up'];
if ($up == 'start') {
$this->perform_update_start();
$this->redirect(array('up' => 'patches'));
} elseif ($up == 'patches') {
$success = $this->perform_update_patches();
if ($success) {
$this->redirect(array('up' => 'end'));
}
} elseif ($up == 'end') {
$this->perform_update_end();
$update_package = $this->get_update_package();
$redirect = $update_package ? array() : get_epesi_url();
$this->redirect($redirect);
} else {
$this->update_body();
}
}
protected function redirect($url_or_get)
{
if ($this->CLI) {
global $argv;
print("Redirect...\n");
$args = array_slice($argv, 1);
array_unshift($args, __FILE__);
system((defined('PHP_BINARY')?PHP_BINARY:'php').' '.implode(' ', $args));
exit();
}
if (is_string($url_or_get)) {
$location = $url_or_get;
} else {
$location = $_SERVER['PHP_SELF'];
if (count($url_or_get)) {
$location .= '?' . http_build_query($url_or_get);
}
}
header("Location: $location");
die();
}
protected function update_msg()
{
$msg = __('Update %s from version %s to %s.', array(EPESI, $this->system_version, $this->current_version));
return "<p>$msg</p>";
}
protected function update_process_info_msg()
{
$do_not_close = __('Please do not close this window until process will be fully finished.');
$url_text = __('help file');
$url = get_epesi_url() . '/docs/UPDATE.md';
$url = htmlspecialchars($url);
$link = "<a href=\"$url\" target=\"_blank\">$url_text</a>";
$info = __('Your browser drives update process. For more information read %s', array($link));
$msg = "<p><strong>$do_not_close</strong></p><p>$info</p>";
return "$msg";
}
protected function update_body()
{
$msg = $this->update_msg();
$msg .= $this->update_process_info_msg();
$msg .= ' <a class="button" href="?up=start">' . __('Update!') . '</a>';
$this->quit($msg);
}
protected function turn_on_maintenance_mode()
{
if (MaintenanceMode::is_on()) return;
$msg = __('%s is currently updating. Please wait or contact your system administrator.', array(EPESI));
if ($this->CLI) {
MaintenanceMode::turn_on($msg);
} else {
MaintenanceMode::turn_on_with_cookie($msg);
}
}
protected function perform_update_start()
{
$this->cli_msg("Update from " . $this->system_version . " to " . $this->current_version . "...");
$this->turn_on_maintenance_mode();
//restore innodb tables in case of db reimport
$mysql = stripos(DATABASE_DRIVER, 'mysql') !== false;
if ($mysql) {
$tbls = DB::MetaTables('TABLE', true);
foreach ($tbls as $t) {
$tbl = DB::GetRow('SHOW CREATE TABLE ' . $t);
if (!isset($tbl[1]) || preg_match('/ENGINE=myisam/i', $tbl[1])) {
DB::Execute('ALTER TABLE ' . $t . ' ENGINE = INNODB');
}
}
}
}
protected function perform_update_patches($browser = true)
{
$this->turn_on_maintenance_mode();
$patches = PatchUtil::apply_new(true);
if ($browser) {
$success = PatchUtil::all_successful($patches);
if (!$success) {
$msg = self::format_patches_msg($patches);
$this->body($msg);
}
return $success;
}
}
protected function format_patches_msg($patches)
{
$msg = "<h1>" . __('Patches to apply') . ":</h1>";
$msg .= "<p>" . __('Last refresh') . ' - ' . date('Y-m-d H:i:s') . "</p>";
$msg .= '<table>';
// table header
$format = "<tr><th>%s</th><th>%s</th><th>%s</th></tr>\n";
$msg .= sprintf($format, __('Module'), __('Patch'), __('Status'));
$format = "<tr><td>%s</td><td>%s</td><td style=\"text-align: center; font-size: 0.8em; color: gray\">%s</td></tr>\n";
/** @var Patch $patch */
foreach ($patches as $patch) {
// show only awaiting or processed one
if ($patch->get_apply_status() == Patch::STATUS_SUCCESS) {
continue;
}
$status = __('pending');
if ($patch->get_apply_status() == Patch::STATUS_TIMEOUT) {
$status = '<img src="images/loader.gif" alt="Processing..." width="128" height="5" border="0">';
}
if (($user_message = $patch->get_user_message()) != null) {
$status .= "<div>$user_message</div>";
}
$msg .= sprintf($format, $patch->get_module(), $patch->get_short_description(), $status);
}
$msg .= '</table>';
$msg .= '<script type="text/javascript">location.reload(true)</script>';
return $msg;
}
protected function perform_update_end()
{
$this->turn_on_maintenance_mode();
Base_ThemeCommon::themeup();
Base_LangCommon::update_translations();
ModuleManager::create_load_priority_array();
Variable::set('version', EPESI_VERSION);
MaintenanceMode::turn_off();
$this->cli_msg("Updated to " . $this->current_version);
}
protected function body($html)
{
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta content="text/html; charset=utf-8" http-equiv="content-type">
<title><?php print(EPESI); ?> update</title>
<link href="setup.css" type="text/css" rel="stylesheet"/>
<meta name="robots" content="NOINDEX, NOARCHIVE">
</head>
<body>
<table id="banner" border="0" cellpadding="0" cellspacing="0">
<tr>
<td class="image"> </td>
<td class="back"> </td>
</tr>
</table>
<br>
<center>
<table id="main" border="0" cellpadding="0" cellspacing="0">
<tr>
<td>
<center>
<?php print $html; ?>
</center>
</td>
</tr>
</table>
</center>
<br>
<center>
<span class="footer">Copyright © 2016 • <a
href="http://www.telaxus.com">Telaxus LLC</a></span>
<br>
<p><a href="http://www.epesi.org"><img
src="images/epesi-powered.png" alt="image"
border="0"></a></p>
</center>
</body>
</html>
<?php
}
protected $CLI;
protected $cli_force_update = false;
protected $cli_create_backup = false;
protected $system_version;
protected $current_version;
protected $current_revision;
}
$x = new EpesiUpdate();
$x->run();