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<?php
/** *********************************************
* LiteSpeed Web Server Cache Manager
*
* @author Michael Alegre
* @copyright (c) 2018-2023 LiteSpeed Technologies, Inc.
* *******************************************
*/
namespace Lsc\Wp;
use Lsc\Wp\Context\Context;
use LsUserPanel\Lsc\UserLSCMException;
class PluginVersion
{
/**
* @var string
*/
const DEFAULT_PLUGIN_PATH = '/wp-content/plugins/litespeed-cache';
/**
* @deprecated 1.9
* @var string
*/
const DOWNLOAD_DIR = '/usr/src/litespeed-wp-plugin';
/**
* @var string
*/
const LSCWP_DEFAULTS_INI_FILE_NAME = 'const.default.ini';
/**
* @var string
*/
const PLUGIN_NAME = 'litespeed-cache';
/**
* @var string
*/
const TRANSLATION_CHECK_FLAG_BASE = '.ls_translation_check';
/**
* @var string
*/
const VER_MD5 = 'lscwp_md5';
/**
* @deprecated 4.1.3 Will be removed in favor of $this->shortVersions.
* @var string[]
*/
protected $knownVersions = array();
/**
* @since 4.1.3
* @var string[]
*/
protected $shortVersions = array();
/**
* @var string[]
*/
protected $allowedVersions = array();
/**
* @var string
*/
protected $currVersion = '';
/**
* @var string
*/
protected $versionFile;
/**
* @var string
*/
protected $activeFile;
/**
* @var null|PluginVersion
*/
protected static $instance;
/**
*
* @throws LSCMException Thrown indirectly by $this->init() call.
*/
protected function __construct()
{
$this->init();
}
/**
*
* @throws LSCMException Thrown indirectly by Context::isPrivileged() call.
* @throws LSCMException Thrown indirectly by $this->refreshVersionList()
* call.
*/
protected function init()
{
$this->setVersionFiles();
if ( Context::isPrivileged() ) {
$this->refreshVersionList();
}
}
/**
*
* @return PluginVersion
*
* @throws LSCMException Thrown indirectly by Context::getOption() call.
*/
public static function getInstance()
{
if ( self::$instance == null ) {
$className = Context::getOption()->getLscwpVerClass();
self::$instance = new $className();
}
return self::$instance;
}
/**
*
* @deprecated 4.1.3 Use "$formatted = true" equivalent function
* $this->getShortVersions() instead. Un-formatted version of this list
* will no longer be available once this function is removed.
*
* @param bool $formatted
*
* @return string[]
*
* @throws LSCMException Thrown indirectly by $this->setKnownVersions()
* call.
*/
public function getKnownVersions( $formatted = false )
{
if ( empty($this->knownVersions) ) {
$this->setKnownVersions();
}
if ( $formatted ) {
$knownVers = $this->knownVersions;
$prevVer = '';
foreach ( $knownVers as &$ver ) {
if ( $prevVer !== '' ) {
$ver1 = explode('.', $prevVer);
$ver2 = explode('.', $ver);
if ( $ver1[0] !== $ver2[0] || $ver1[1] !== $ver2[1] ) {
$ver = "$ver2[0].$ver2[1].x";
}
}
$prevVer = $ver;
}
return $knownVers;
}
return $this->knownVersions;
}
/**
*
* @return string[]
*
* @throws LSCMException Thrown indirectly by $this->setAllowedVersions()
* call.
*/
public function getAllowedVersions()
{
if ( empty($this->allowedVersions) ) {
$this->setAllowedVersions();
}
return $this->allowedVersions;
}
/**
*
* @since 4.1.3
*
* @return string[]
*
* @throws LSCMException Thrown indirectly by $this->setShortVersions()
* call.
*/
public function getShortVersions()
{
if ( empty($this->shortVersions) ) {
$this->setShortVersions();
}
return $this->shortVersions;
}
/**
*
* @return string
*
* @throws LSCMException Thrown indirectly by $this->getAllowedVersions()
* call.
*/
public function getLatestVersion()
{
$allowedVers = $this->getAllowedVersions();
return (isset($allowedVers[0])) ? $allowedVers[0] : '';
}
/**
*
* @return string
*
* @throws LSCMException Thrown indirectly by self::getInstance() call.
* @throws LSCMException Thrown indirectly by
* $instance->setCurrentVersion() call.
*/
public static function getCurrentVersion()
{
$instance = self::getInstance();
if ( $instance->currVersion == '' ) {
$instance->setCurrentVersion();
}
return $instance->currVersion;
}
/**
*
* @since 1.9
*/
protected function createDownloadDir()
{
mkdir(Context::LOCAL_PLUGIN_DIR, 0755);
}
protected function setVersionFiles()
{
$this->versionFile = Context::LOCAL_PLUGIN_DIR . '/lscwp_versions_v2';
$this->activeFile = Context::LOCAL_PLUGIN_DIR . '/lscwp_active_version';
}
/**
* Temporary function for handling the active version file and versions
* file move in the short term.
*
* @deprecated 1.9
* @since 1.9
*
* @throws LSCMException Thrown indirectly by Context::getLSCMDataDir()
* call.
*/
protected function checkOldVersionFiles()
{
$dataDir = Context::getLSCMDataDir();
$oldActiveFile = "$dataDir/lscwp_active_version";
if ( file_exists($oldActiveFile) ) {
if ( !file_exists(Context::LOCAL_PLUGIN_DIR) ) {
$this->createDownloadDir();
}
rename($oldActiveFile, $this->activeFile);
unlink("$dataDir/lscwp_versions");
}
}
/**
*
* @throws LSCMException Thrown indirectly by $this->checkOldVersionFiles()
* call.
* @throws LSCMException Thrown indirectly by Logger::debug() call.
* @throws LSCMException Thrown indirectly by Logger::debug() call.
* @throws LSCMException Thrown indirectly by Logger::debug() call.
*/
public function setCurrentVersion()
{
$this->checkOldVersionFiles();
if ( ($activeVersion = $this->getActiveVersion()) == '' ) {
Logger::debug('Active LSCWP version not found.');
}
elseif ( ! $this->hasDownloadedVersion($activeVersion) ) {
$activeVersion = '';
unlink($this->activeFile);
Logger::debug('Valid LSCWP download not found.');
}
if ( $activeVersion == '' ) {
try {
$activeVersion = self::getLatestVersion();
}
catch ( LSCMException $e ) {
Logger::debug($e->getMessage());
}
}
$this->currVersion = $activeVersion;
}
/**
*
* @since 1.11
*
* @return string
*/
private function getActiveVersion()
{
if ( file_exists($this->activeFile)
&& ($content = file_get_contents($this->activeFile)) ) {
return trim($content);
}
return '';
}
/**
*
* @deprecated 4.1.3 This function will be removed in favor of
* pre-formatted $this->setShortVersions().
*
* @throws LSCMException Thrown when LSCWP version list cannot be found.
* @throws LSCMException Thrown when read LSCWP version list command fails.
* @throws LSCMException Thrown when match against LSCWP version list
* content fails.
*/
protected function setKnownVersions()
{
if ( !file_exists($this->versionFile) ) {
throw new LSCMException(
'Cannot find LSCWP version list.',
LSCMException::E_NON_FATAL
);
}
if ( ($content = file_get_contents($this->versionFile)) === false ) {
throw new LSCMException(
'Failed to read LSCWP version list content.',
LSCMException::E_NON_FATAL
);
}
if ( preg_match('/old\s{(.*)}/sU', trim($content), $m) != 1 ) {
throw new LSCMException(
'Failed to get known versions from LSCWP version list content.',
LSCMException::E_NON_FATAL
);
}
$this->knownVersions = explode("\n", trim($m[1]));
}
/**
*
* @throws LSCMException Thrown when LSCWP version list cannot be found.
* @throws LSCMException Thrown when read LSCWP version list command fails.
* @throws LSCMException Thrown when LSCWP version list content is empty.
*/
protected function setAllowedVersions()
{
if ( !file_exists($this->versionFile) ) {
throw new LSCMException(
'Cannot find LSCWP version list.',
LSCMException::E_NON_FATAL
);
}
if ( ($content = file_get_contents($this->versionFile)) === false ) {
throw new LSCMException(
'Failed to read LSCWP version list content.',
LSCMException::E_NON_FATAL
);
}
$matchFound = preg_match(
'/allowed\s{(.*)}/sU',
trim($content),
$m
);
if ( !$matchFound || ($list = trim($m[1])) == '' ) {
throw new LSCMException(
'LSCWP version list is empty.',
LSCMException::E_NON_FATAL
);
}
$this->allowedVersions = explode("\n", $list);
}
/**
*
* @since 4.1.3
*
* @throws LSCMException Thrown when LSCWP version list cannot be found.
* @throws LSCMException Thrown when read LSCWP version list command fails.
* @throws LSCMException Thrown when LSCWP version list content is empty.
*/
protected function setShortVersions()
{
if ( !file_exists($this->versionFile) ) {
throw new LSCMException(
'Cannot find LSCWP version list.',
LSCMException::E_NON_FATAL
);
}
if ( ($content = file_get_contents($this->versionFile)) === false ) {
throw new LSCMException(
'Failed to read LSCWP version list content.',
LSCMException::E_NON_FATAL
);
}
$matchFound = preg_match(
'/short\s{(.*)}/sU',
trim($content),
$m
);
if ( !$matchFound || ($list = trim($m[1])) == '' ) {
throw new LSCMException(
'LSCWP version list is empty.',
LSCMException::E_NON_FATAL
);
}
$this->shortVersions = explode("\n", $list);
}
/**
*
* @param string $version Valid LSCWP version.
* @param bool $init True when trying to set initial active version.
*
* @throws LSCMException Thrown indirectly by $this->getAllowedVersions()
* call.
* @throws LSCMException Thrown indirectly by Logger::error() call.
* @throws LSCMException Thrown indirectly by $this->downloadVersion()
* call.
* @throws LSCMException Thrown indirectly by Logger::notice() call.
*/
public function setActiveVersion( $version, $init = false )
{
$allowedVers = $this->getAllowedVersions();
if ( in_array($version, $allowedVers) ) {
$activeVer = $version;
}
else {
try {
$currVer = ($init) ? '' : $this->getCurrentVersion();
}
catch ( LSCMException $e ) {
$currVer = '';
}
if ( $currVer != '' ) {
$activeVer = $currVer;
}
else {
$activeVer = $allowedVers[0];
}
Logger::error(
"Version $version not in allowed list, reset active "
. "version to $activeVer."
);
}
if ( $activeVer != $this->getActiveVersion() ) {
if ( !$this->hasDownloadedVersion($activeVer) ) {
$this->downloadVersion($activeVer);
}
$this->currVersion = $activeVer;
file_put_contents($this->activeFile, $activeVer);
Logger::notice("Current active LSCWP version is now $activeVer.");
}
}
/**
*
* @param bool $isforced
*
* @throws LSCMException Thrown indirectly by Logger::info() call.
*/
protected function refreshVersionList( $isforced = false )
{
clearstatcache();
if ( $isforced || !file_exists($this->versionFile)
|| (time() - filemtime($this->versionFile)) > 86400 ) {
if ( !file_exists(Context::LOCAL_PLUGIN_DIR) ) {
$this->createDownloadDir();
}
$url = 'https://www.litespeedtech.com/packages/lswpcache'
. '/version_list_v2';
$content = Util::get_url_contents($url);
if ( empty($content) || substr($content, 0, 7) != 'allowed' ) {
/**
* Try again using cli curl directly to bypass potential
* reCAPTCHA issues.
*/
$content = Util::getUrlContentsUsingExecCurl($url);
if ( empty($content) || substr($content, 0, 7) != 'allowed' ) {
touch($this->versionFile);
return;
}
}
file_put_contents($this->versionFile, $content);
Logger::info('LSCache for WordPress version list updated');
}
}
/**
* Filter out any versionList versions that do not meet specific criteria.
*
* @deprecated 4.1.3 No longer used.
*
* @param string $ver Version string.
*
* @return bool
*/
protected function filterVerList( $ver )
{
return Util::betterVersionCompare($ver, '1.2.2', '>');
}
/**
* Checks the current installation for existing LSCWP plugin files and
* copies them to the installation's plugins directory if not found.
* This function should only be run as the user.
*
* @param string $pluginDir The WordPress plugin directory.
* @param string $version The version of LSCWP to be used when copying
* over plugin files.
*
* @return bool True when new LSCWP plugin files are used.
*
* @throws LSCMException Thrown when LSCWP source package is not available
* for the provided version.
* @throws LSCMException Thrown when LSCWP plugin files could not be copied
* to plugin directory.
* @throws LSCMException Thrown indirectly by self::getInstance() call.
* @throws LSCMException Thrown indirectly by
* $instance->getCurrentVersion() call.
* @throws LSCMException Thrown indirectly by Logger::debug() call.
*/
public static function prepareUserInstall( $pluginDir, $version = '' )
{
$lscwp_plugin = "$pluginDir/litespeed-cache/litespeed-cache.php";
if ( file_exists($lscwp_plugin) ) {
/**
* Existing installation detected.
*/
return false;
}
$instance = self::getInstance();
if ( $version == '' ) {
$version = $instance->getCurrentVersion();
}
if ( !$instance->hasDownloadedVersion($version) ) {
throw new LSCMException(
"Source Package not available for version $version.",
LSCMException::E_NON_FATAL
);
}
exec(
'/bin/cp --preserve=mode -rf '
. Context::LOCAL_PLUGIN_DIR . "/$version/" . self::PLUGIN_NAME
. " $pluginDir"
);
if ( !file_exists($lscwp_plugin) ) {
throw new LSCMException(
"Failed to copy plugin files to $pluginDir.",
LSCMException::E_NON_FATAL
);
}
$customIni = Context::LOCAL_PLUGIN_DIR . '/'
. self::LSCWP_DEFAULTS_INI_FILE_NAME;
if ( file_exists($customIni) ) {
copy(
$customIni,
"$pluginDir/litespeed-cache/data/"
. self::LSCWP_DEFAULTS_INI_FILE_NAME
);
}
Logger::debug(
'Copied LSCache for WordPress plugin files into plugins directory '
. $pluginDir
);
return true;
}
/**
*
* @param string $version
*
* @return bool
*/
protected function hasDownloadedVersion( $version )
{
$dir = Context::LOCAL_PLUGIN_DIR . "/$version";
$md5file = "$dir/" . self::VER_MD5;
$plugin = "$dir/" . self::PLUGIN_NAME;
if ( !file_exists($md5file) || !is_dir($plugin) ) {
return false;
}
return ( file_get_contents($md5file) == Util::DirectoryMd5($plugin) );
}
/**
*
* @param string $version
* @param string $dir
* @param bool $saveMD5
*
* @throws LSCMException Thrown when wget command for downloaded LSCWP
* version fails.
* @throws LSCMException Thrown when unable to unzip LSCWP zip file.
* @throws LSCMException Thrown when unzipped LSCWP files do not contain
* expected test file.
* @throws LSCMException Thrown indirectly by Logger::info() call.
* @throws LSCMException Thrown indirectly by Util::unzipFile() call.
*/
protected function wgetPlugin( $version, $dir, $saveMD5 = false )
{
Logger::info("Downloading LSCache for WordPress v$version...");
$zipFile = self::PLUGIN_NAME . ".$version.zip";
exec(
'wget -q --tries=1 --no-check-certificate '
. "https://downloads.wordpress.org/plugin/$zipFile -P $dir",
$output,
$return_var
);
if ( $return_var !== 0 ) {
throw new LSCMException(
"Failed to download LSCWP v$version with wget exit status "
. "$return_var.",
LSCMException::E_NON_FATAL
);
}
$localZipFile = "$dir/$zipFile";
$extractedZip = Util::unzipFile($localZipFile, $dir);
unlink($localZipFile);
if ( !$extractedZip ) {
throw new LSCMException(
"Unable to unzip $localZipFile",
LSCMException::E_NON_FATAL
);
}
$plugin = "$dir/" . self::PLUGIN_NAME;
if ( !file_exists("$plugin/" . self::PLUGIN_NAME . '.php') ) {
throw new LSCMException(
"Test file not found. Downloaded LSCWP v$version is invalid.",
LSCMException::E_NON_FATAL
);
}
if ( $saveMD5 ) {
file_put_contents(
"$dir/" . self::VER_MD5,
Util::DirectoryMd5($plugin)
);
}
}
/**
*
* @param string $version
*
* @throws LSCMException Thrown when download dir could not be created.
* @throws LSCMException Thrown indirectly by $this->wgetPlugin() call.
*/
protected function downloadVersion( $version )
{
$dir = Context::LOCAL_PLUGIN_DIR . "/$version";
if ( !file_exists($dir) ) {
if ( !mkdir($dir, 0755, true) ) {
throw new LSCMException(
"Failed to create download dir $dir.",
LSCMException::E_NON_FATAL
);
}
}
else {
exec("/bin/rm -rf $dir/*");
}
$this->wgetPlugin($version, $dir, true);
}
/**
*
* @param string $locale
* @param string $pluginVer
*
* @return bool
*
* @throws LSCMException Thrown indirectly by Logger::info() call.
* @throws LSCMException Thrown indirectly by Util::unzipFile() call.
*/
public static function retrieveTranslation( $locale, $pluginVer )
{
Logger::info(
"Downloading LSCache for WordPress $locale translation..."
);
$translationDir =
Context::LOCAL_PLUGIN_DIR . "/$pluginVer/translations";
if ( !file_exists($translationDir) ) {
mkdir($translationDir, 0755);
}
touch(
"$translationDir/" . self::TRANSLATION_CHECK_FLAG_BASE . "_$locale"
);
/**
* downloads.wordpress.org looks to always return a '200 OK' status,
* even when serving a 404 page. As such invalid downloads can only be
* checked through user failure to unzip through WP func unzip_file()
* as we do not assume that root has the ability to unzip.
*/
exec(
'wget -q --tries=1 --no-check-certificate '
. 'https://downloads.wordpress.org/translation/plugin/'
. "litespeed-cache/$pluginVer/$locale.zip "
. "-P $translationDir",
$output,
$return_var
);
if ( $return_var !== 0 ) {
return false;
}
/**
* The WordPress user can unzip for us if this call fails.
*/
Util::unzipFile("$translationDir/$locale.zip", $translationDir);
return true;
}
/**
*
* @param string $locale
* @param string $pluginVer
*
* @throws LSCMException Thrown indirectly by Logger::info() call.
*/
public static function removeTranslationZip( $locale, $pluginVer )
{
Logger::info("Removing LSCache for WordPress $locale translation...");
$zipFile = realpath(
Context::LOCAL_PLUGIN_DIR . "/$pluginVer/translations/$locale.zip"
);
$realPathStart = substr($zipFile, 0, strlen(Context::LOCAL_PLUGIN_DIR));
if ( $realPathStart === Context::LOCAL_PLUGIN_DIR ) {
unlink($zipFile);
}
}
}
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