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Edit File : UserCommand.php \| Size : 28.72 KB
<?php / ******************************************* * LiteSpeed Web Server Cache Manager * * @author Michael Alegre * @copyright (c) 2018-2023 LiteSpeed Technologies, Inc. * ******************************************* / namespace Lsc\Wp; use Exception; use Lsc\Wp\Context\Context; use Lsc\Wp\Context\ContextOption; use Lsc\Wp\Context\UserCLIContextOption; use Lsc\Wp\Panel\ControlPanel; /* * Running as user - suexec / class UserCommand { /* * @var int / const EXIT_ERROR = 1; /* * @var int / const EXIT_SUCC = 2; /* * @var int / const EXIT_FAIL = 4; /* * @var int / const EXIT_INCR_SUCC = 8; /* * @var int / const EXIT_INCR_FAIL = 16; /* * @var int / const EXIT_INCR_BYPASS = 32; /* * @var int / const RETURN_CODE_TIMEOUT = 124; /* * @var string / const CMD_STATUS = 'status'; /* * @var string / const CMD_ENABLE = 'enable'; /* * @var string / const CMD_DIRECT_ENABLE = 'direct_enable'; /* * @var string / const CMD_MASS_ENABLE = 'mass_enable'; /* * @var string / const CMD_DISABLE = 'disable'; /* * @var string / const CMD_MASS_DISABLE = 'mass_disable'; /* * @var string / const CMD_UPGRADE = 'upgrade'; /* * @var string / const CMD_MASS_UPGRADE = 'mass_upgrade'; /* * @var string / const CMD_UPDATE_TRANSLATION = 'update_translation'; /* * @var string / const CMD_REMOVE_LSCWP_PLUGIN_FILES = 'remove_lscwp_plugin_files'; /* * @var string / const CMD_DASH_NOTIFY = 'dash_notify'; /* * @var string / const CMD_MASS_DASH_NOTIFY = 'mass_dash_notify'; /* * @var string / const CMD_DASH_DISABLE = 'dash_disable'; /* * @var string / const CMD_MASS_DASH_DISABLE = 'mass_dash_disable'; /* * @var string / const CMD_DASH_GET_MSG = 'dash_get_msg'; /* * @var string / const CMD_DASH_ADD_MSG = 'dash_add_msg'; /* * @var string / const CMD_DASH_DELETE_MSG = 'dash_delete_msg'; /* * @since 1.12 * @var string / const CMD_GET_QUICCLOUD_API_KEY = 'getQuicCloudApiKey'; /* * @var bool / private $asUser; /* * @var WPInstall / private $currInstall; /* * @var string / private $action; /* * @var string[] / private $extraArgs; /* * * @param bool $asUser * * @throws LSCMException Thrown indirectly by Context::initialize() call. / private function __construct( $asUser = false ) { if ( ($this->asUser = $asUser) ) { require_once __DIR__ . '/../autoloader.php'; date_default_timezone_set('UTC'); Context::initialize(new UserCLIContextOption('userCommand')); } } /* * Handles logging unexpected error output (or not if too long) and returns * a crafted message to be displayed instead. * * @param WPInstall $wpInstall WordPress Installation object. * @param string $err Compiled error message. * @param int $lines Number of $output lines read into the error * msg. * * @return string Message to be displayed instead. * * @throws LSCMException Thrown indirectly by Logger::error() call. * @throws LSCMException Thrown indirectly by Logger::error() call. / private static function handleUnexpectedError( WPInstall $wpInstall, $err, $lines ) { $msg = 'Unexpected Error Encountered!'; $path = $wpInstall->getPath(); /* * $lines > 500 are likely some custom code triggering a page render. * Throw out actual message in this case. / if ( $lines < 500 ) { $match = false; $commonErrs = array( WPInstall::ST_ERR_EXECMD_DB => 'Error establishing a database connection' ); foreach ( $commonErrs as $statusBit => $commonErr ) { if ( strpos($err, $commonErr) !== false ) { $wpInstall->unsetStatusBit(WPInstall::ST_ERR_EXECMD); $wpInstall->setStatusBit($statusBit); $msg .= " $commonErr."; $match = true; break; } } if ( !$match ) { Logger::error("$path - $err"); return "$msg See " . ContextOption::LOG_FILE_NAME . " for more information."; } } Logger::error("$path - $msg"); return $msg; } /* * Parse out locale and plugin version information from issue() result * output GET_TRANSLATION or BAD_TRANSLATION line. * * @since 1.14 * * @param string $line * * @return string[] / private static function parseTranslationLocaleAndPluginVer( $line ) { list($locale, $pluginVer) = explode(' ', $line); return array( 'locale' => $locale, 'pluginVer' => $pluginVer ); } /* * * @since 1.9 * * @param WPInstall $wpInstall * @param string $output * * @throws LSCMException Thrown indirectly by * PluginVersion::retrieveTranslation() call. * @throws LSCMException Thrown indirectly by self::subCommandIssue() call. * @throws LSCMException Thrown indirectly by * PluginVersion::removeTranslationZip() call. / private static function handleGetTranslationOutput( WPInstall $wpInstall, $output ) { $translationInfo = self::parseTranslationLocaleAndPluginVer($output); $translationRetrieved = PluginVersion::retrieveTranslation( $translationInfo['locale'], $translationInfo['pluginVer'] ); if ( $translationRetrieved ) { $subOutput = self::subCommandIssue(self::CMD_UPDATE_TRANSLATION, $wpInstall); foreach ( $subOutput as $subLine ) { if ( preg_match('/BAD_TRANSLATION=(.+)/', $subLine, $m) ) { $badTranslationInfo = self::parseTranslationLocaleAndPluginVer($m[1]); PluginVersion::removeTranslationZip( $badTranslationInfo['locale'], $badTranslationInfo['pluginVer'] ); } } } } /* * * @since 1.9 * * @param WPInstall $wpInstall * @param string $line * @param int $retStatus * @param int $cmdStatus * @param string $err * * @return bool * * @throws LSCMException Thrown indirectly by * $wpInstall->populateDataFromUrl() call. * @throws LSCMException Thrown indirectly by * self::handleGetTranslationOutput() call. / private static function handleResultOutput( WPInstall $wpInstall, $line, &$retStatus, &$cmdStatus, &$err ) { if ( preg_match('/SITEURL=(.+)/', $line, $m) ) { if ( !$wpInstall->populateDataFromUrl($m[1]) ) { /* * Matching docroot could not be found, ignore other * output. setCmdStatusAndMsg() etc already handled in * setSiteUrl(). / return false; } } elseif ( preg_match('/STATUS=(.+)/', $line, $m) ) { $retStatus = (int)$m[1]; } elseif ( preg_match('/MASS_INCR=(.+)/', $line, $m) ) { if ( $m[1] == 'SUCC' ) { $cmdStatus \|= UserCommand::EXIT_INCR_SUCC; } elseif ( $m[1] == 'FAIL' ) { $cmdStatus \|= UserCommand::EXIT_INCR_FAIL; } elseif( $m[1] = 'BYPASS' ) { $cmdStatus \|= UserCommand::EXIT_INCR_BYPASS; } } elseif ( preg_match('/GET_TRANSLATION=(.+)/', $line, $m) ) { self::handleGetTranslationOutput($wpInstall, $m[1]); } else { $err .= "Unexpected result line: $line\n"; } return true; } /* * * @since 1.9 * * @param WPInstall $wpInstall * * @throws LSCMException Thrown indirectly by self::subCommandIssue() call. / private static function removeLeftoverLscwpFiles( WPInstall $wpInstall ) { self::subCommandIssue(self::CMD_REMOVE_LSCWP_PLUGIN_FILES, $wpInstall); $wpInstall->removeNewLscwpFlagFile(); } /* * * @param string $action * @param WPInstall $wpInstall * @param array $extraArgs * * @return string * * @throws LSCMException Thrown indirectly by $wpInstall->getPhpBinary() * call. * @throws LSCMException Thrown indirectly by Context::getOption() call. / protected static function getIssueCmd( $action, WPInstall $wpInstall, array $extraArgs = array() ) { $su = $wpInstall->getSuCmd(); $timeout = ControlPanel::PHP_TIMEOUT; $phpBin = $wpInstall->getPhpBinary(); $path = $wpInstall->getPath(); $serverName = $wpInstall->getData(WPInstall::FLD_SERVERNAME); $env = Context::getOption()->getInvokerName(); if ( $serverName === null ) { $serverName = $docRoot = 'x'; } else { $docRoot = $wpInstall->getData(WPInstall::FLD_DOCROOT); if ( $docRoot === null ) { $docRoot = 'x'; } } $modifier = implode(' ', $extraArgs); $file = __FILE__; return "$su -c \"cd $path/wp-admin && timeout $timeout $phpBin $file " . "$action $path $docRoot $serverName $env" . (($modifier !== '') ? " $modifier\"" : '"'); } /* * * @since 1.12 * * @param string $action * @param WPInstall $wpInstall * @param string[] $extraArgs * * @return null\|string * * @throws LSCMException Thrown indirectly by self::preIssueValidation() * call. * @throws LSCMException Thrown indirectly by self::getIssueCmd() call. * @throws LSCMException Thrown indirectly by Logger::debug() call. * @throws LSCMException Thrown indirectly by Logger::debug() call. * @throws LSCMException Thrown indirectly by Logger::logMsg() call. * @throws LSCMException Thrown indirectly by Logger::logMsg() call. / public static function getValueFromWordPress( $action, WPInstall $wpInstall, array $extraArgs = array() ) { if ( !self::preIssueValidation($action, $wpInstall, $extraArgs) ) { return null; } $cmd = self::getIssueCmd($action, $wpInstall, $extraArgs); exec($cmd, $output, $return_var); Logger::debug( "getValueFromWordPress command $action=$return_var $wpInstall\n$cmd" ); Logger::debug('output = ' . var_export($output, true)); $ret = null; $debug = $upgrade = $err = ''; $curr = &$err; foreach ( $output as $line ) { /* * If this line is not present in output, did not return normally. * This line will appear after any [UPGRADE] output. / if ( strpos($line, 'LS UserCommand Output Start') !== false ) { continue; } elseif ( strpos($line, '[RESULT]') !== false ) { if ( preg_match('/API_KEY=(.+)/', $line, $m) ) { $ret = $m[1]; } else { $err .= "Unexpected result line $line\n"; } } elseif ( ($pos = strpos($line, '[DEBUG]')) !== false ) { $debug .= substr($line, $pos + 7) . "\n"; $curr = &$debug; } elseif ( strpos($line, '[UPGRADE]') !== false ) { //Ignore this output $curr = &$upgrade; } else { $curr .= "$line\n"; } } $path = $wpInstall->getPath(); if ( $debug ) { Logger::logMsg("$path - $debug", Logger::L_DEBUG); } if ( $err ) { Logger::logMsg("$path - $err", Logger::L_ERROR); } return $ret; } /* * * @since 1.14 * * @param string $subAction * @param WPInstall $wpInstall * * @return string[] * * @throws LSCMException Thrown indirectly by self::getIssueCmd() call. * @throws LSCMException Thrown indirectly by Logger::debug() call. * @throws LSCMException Thrown indirectly by Logger::debug() call. / private static function subCommandIssue( $subAction, WPInstall $wpInstall ) { $subCmd = self::getIssueCmd($subAction, $wpInstall); exec($subCmd, $subOutput, $subReturn_var); Logger::debug( "Issue sub command $subAction=$subReturn_var $wpInstall\n$subCmd" ); Logger::debug('sub output = ' . var_export($subOutput, true)); return $subOutput; } /* * * @param string $action * @param WPInstall $wpInstall * @param string[] $extraArgs * * @return bool * * @throws LSCMException Thrown indirectly by self::preIssueValidation() * call. * @throws LSCMException Thrown indirectly by self::getIssueCmd() call. * @throws LSCMException Thrown indirectly by Logger::debug() call. * @throws LSCMException Thrown indirectly by Logger::debug() call. * @throws LSCMException Thrown indirectly by * self::removeLeftoverLscwpFiles() call. * @throws LSCMException Thrown indirectly by self::handleResultOutput() * call. * @throws LSCMException Thrown indirectly by Logger::logMsg() call. * @throws LSCMException Thrown indirectly by Logger::logMsg() call. * @throws LSCMException Thrown indirectly by $wpInstall->addUserFlagFile() * call. * @throws LSCMException Thrown indirectly by Logger::error() call. * @throws LSCMException Thrown indirectly by self::handleUnexpectedError() * call. / public static function issue( $action, WPInstall $wpInstall, array $extraArgs = array() ) { if ( !self::preIssueValidation($action, $wpInstall, $extraArgs) ) { return false; } $cmd = self::getIssueCmd($action, $wpInstall, $extraArgs); exec($cmd, $output, $return_var); Logger::debug( "Issue command $action=$return_var $wpInstall\n$cmd" ); Logger::debug('output = ' . var_export($output, true)); if ( $wpInstall->hasNewLscwpFlagFile() ) { self::removeLeftoverLscwpFiles($wpInstall); } $errorStatus = $retStatus = $cmdStatus = 0; switch ( $return_var ) { case UserCommand::RETURN_CODE_TIMEOUT: $errorStatus \|= WPInstall::ST_ERR_TIMEOUT; break; case UserCommand::EXIT_ERROR: case 255: $errorStatus \|= WPInstall::ST_ERR_EXECMD; break; //no default } $isExpectedOutput = false; $unexpectedLines = 0; $succ = $upgrade = $err = $msg = $logMsg = ''; $logLvl = -1; $curr = &$err; foreach ( $output as $line ) { /* * If this line is not present in output, did not return normally. * This line will appear after any [UPGRADE] output. / if ( strpos($line, 'LS UserCommand Output Start') !== false ) { $isExpectedOutput = true; } elseif ( strpos($line, '[RESULT]') !== false ) { $ret = self::handleResultOutput( $wpInstall, $line, $retStatus, $cmdStatus, $err ); if ( !$ret ) { /* * Problem handling RESULT output, ignore other output. / return false; } } elseif ( ($pos = strpos($line, '[SUCCESS]')) !== false ) { $succ .= substr($line, $pos + 9) . "\n"; $curr = &$succ; } elseif ( ($pos = strpos($line, '[ERROR]')) !== false ) { $err .= substr($line, $pos + 7) . "\n"; $curr = &$err; } elseif ( strpos($line, '[LOG]') !== false ) { if ( $logMsg != '' ) { Logger::logMsg(trim($logMsg), $logLvl); $logMsg = ''; } if ( preg_match('/\[(\d+)] (.+)/', $line, $m) ) { $logLvl = $m[1]; $logMsg = "{$wpInstall->getPath()} - $m[2]\n"; } $curr = &$logMsg; } elseif ( strpos($line, '[UPGRADE]') !== false ) { /* * Ignore this output / $curr = &$upgrade; } else { if ( !$isExpectedOutput ) { $line = htmlentities($line); $unexpectedLines++; } $curr .= "$line\n"; } } if ( $logMsg != '' ) { Logger::logMsg(trim($logMsg), $logLvl); } if ( !$isExpectedOutput && !$errorStatus ) { $errorStatus \|= WPInstall::ST_ERR_EXECMD; } if ( $errorStatus ) { $wpInstall->addUserFlagFile(false); $errorStatus \|= WPInstall::ST_FLAGGED; $cmdStatus \|= UserCommand::EXIT_INCR_FAIL; } $newStatus = ($errorStatus \| $retStatus); if ( $newStatus != 0 ) { $wpInstall->setStatus($newStatus); } if ( $succ ) { $cmdStatus \|= UserCommand::EXIT_SUCC; $msg = $succ; } if ( $err ) { if ( $return_var == UserCommand::EXIT_FAIL ) { $cmdStatus \|= UserCommand::EXIT_FAIL; } else { $cmdStatus \|= UserCommand::EXIT_ERROR; } if ( $isExpectedOutput ) { $msg = $err; Logger::error("{$wpInstall->getPath()} - $err"); } else { $msg = self::handleUnexpectedError( $wpInstall, $err, $unexpectedLines ); } } $wpInstall->setCmdStatusAndMsg($cmdStatus, $msg); return true; } /* * * @param string[] $args * * @return null\|WPInstall / public static function newFromCmdArgs( array &$args ) { if ( !($wpPath = array_shift($args)) \|\| !($docRoot = array_shift($args)) \|\| !($serverName = array_shift($args)) ) { return null; } if ( !is_dir($wpPath) ) { return null; } /* * LSCWP_REF used by LSCWP plugin. / Util::define_wrapper('LSCWP_REF', array_shift($args)); $install = new WPInstall($wpPath); if ( $docRoot != 'x' ) { $install->setDocRoot($docRoot); } if ( $serverName != 'x' ) { $install->setServerName($serverName); } return $install; } /* * * @param string $action * @param WPInstall $wpInstall * @param string[] $extraArgs Not used at the moment. * * @return bool * * @throws LSCMException Thrown when $action value is unsupported. * @throws LSCMException Thrown indirectly by $wpInstall->hasValidPath() * call. * @throws LSCMException Thrown indirectly by Logger::debug() call. * @throws LSCMException Thrown indirectly by $wpInstall->refreshStatus() * call. * @throws LSCMException Thrown indirectly by $wpInstall->addUserFlagFile() * call. * @throws LSCMException Thrown indirectly by Logger::debug() call. * @throws LSCMException Thrown indirectly by * DashNotifier::prepLocalDashPluginFiles() call. * * @noinspection PhpUnusedParameterInspection / private static function preIssueValidation( $action, WPInstall $wpInstall, array $extraArgs ) { if ( !self::isSupportedIssueCmd($action) ) { throw new LSCMException( "Illegal action $action.", LSCMException::E_PROGRAM ); } if ( !$wpInstall->hasValidPath() ) { return false; } switch ( $action ) { case self::CMD_MASS_ENABLE: case self::CMD_MASS_DISABLE: case self::CMD_MASS_UPGRADE: if ( $wpInstall->hasFlagFile() ) { Logger::debug( "Bypass mass operation for flagged install $wpInstall" ); return false; } //fallthrough case self::CMD_MASS_DASH_NOTIFY: case self::CMD_MASS_DASH_DISABLE: if ( $wpInstall->hasFatalError() ) { $wpInstall->refreshStatus(); if ( $wpInstall->hasFatalError() ) { $wpInstall->addUserFlagFile(false); Logger::debug( 'Bypassed mass operation for error install and ' . "flagged $wpInstall" ); return false; } } //no default } if ( $action == self::CMD_DASH_NOTIFY \|\| $action == self::CMD_MASS_DASH_NOTIFY ) { DashNotifier::prepLocalDashPluginFiles(); } return true; } /* * * @since 1.9 Changed echoed output format to include "[LOG][$lvl] $msg". * Stopped echoing "[DEBUG] $msg" output. * * @return int / private function runAsUser() { try { $ret = 0; if ( $this->action == self::CMD_REMOVE_LSCWP_PLUGIN_FILES ) { $proc = WPCaller::getInstance($this->currInstall, false); $proc->removeLscwpPluginFiles(); $ret = self::EXIT_SUCC; } else { $proc = WPCaller::getInstance($this->currInstall); switch ( $this->action ) { case self::CMD_STATUS: $ret = $proc->updateStatus(true); break; case self::CMD_ENABLE: $ret = $proc->enable($this->extraArgs); $this->currInstall->removeNewLscwpFlagFile(); break; case self::CMD_DIRECT_ENABLE: $ret = $proc->directEnable(); $this->currInstall->removeNewLscwpFlagFile(); break; case self::CMD_MASS_ENABLE: $ret = $proc->massEnable($this->extraArgs); $this->currInstall->removeNewLscwpFlagFile(); break; case self::CMD_DISABLE: $ret = $proc->disable($this->extraArgs); break; case self::CMD_MASS_DISABLE: $ret = $proc->massDisable($this->extraArgs); break; case self::CMD_UPGRADE: $ret = $proc->upgrade($this->extraArgs); break; case self::CMD_MASS_UPGRADE: $ret = $proc->massUpgrade($this->extraArgs); break; case self::CMD_UPDATE_TRANSLATION: $proc->updateTranslationFiles(); $ret = self::EXIT_SUCC; break; case self::CMD_DASH_NOTIFY: $ret = $proc->dashNotify($this->extraArgs); break; case self::CMD_MASS_DASH_NOTIFY: $ret = $proc->massDashNotify($this->extraArgs); break; case self::CMD_DASH_DISABLE: $ret = $proc->dashDisable($this->extraArgs); break; case self::CMD_MASS_DASH_DISABLE: $ret = $proc->massDashDisable($this->extraArgs); break; case self::CMD_GET_QUICCLOUD_API_KEY: $proc->getQuicCloudAPIKey(true); $ret = self::EXIT_SUCC; break; //no default } } echo "LS UserCommand Output Start\n"; foreach ( $proc->getOutputResult() as $key => $value ) { echo "[RESULT] $key=$value\n"; } foreach ( Logger::getUiMsgs(Logger::UI_SUCC) as $msg ) { echo "[SUCCESS] $msg\n"; } foreach ( Logger::getUiMsgs(Logger::UI_ERR) as $msg ) { echo "[ERROR] $msg\n"; } foreach ( Logger::getLogMsgQueue() as $logEntry ) { $lvl = $logEntry->getLvl(); $msg = $logEntry->getMsg(); echo "[LOG][$lvl] $msg\n"; } } catch ( Exception $e ) { $ret = UserCommand::EXIT_ERROR; if ( $e instanceof LSCMException && $e->getCode() == LSCMException::E_NON_FATAL ) { $ret = UserCommand::EXIT_FAIL; } echo "LS UserCommand Output Start\n"; echo "[ERROR] {$e->getMessage()}\n"; } return $ret; } /* * * @param string $action * * @return bool / private static function isSupportedIssueCmd( $action ) { $supported = array( self::CMD_STATUS, self::CMD_ENABLE, self::CMD_DIRECT_ENABLE, self::CMD_MASS_ENABLE, self::CMD_DISABLE, self::CMD_MASS_DISABLE, self::CMD_UPGRADE, self::CMD_MASS_UPGRADE, self::CMD_UPDATE_TRANSLATION, self::CMD_REMOVE_LSCWP_PLUGIN_FILES, self::CMD_DASH_NOTIFY, self::CMD_MASS_DASH_NOTIFY, self::CMD_DASH_DISABLE, self::CMD_MASS_DASH_DISABLE, self::CMD_GET_QUICCLOUD_API_KEY ); return in_array($action, $supported); } /* * * @param string[] $args * * @return bool / private function initArgs( $args ) { $action = array_shift($args); if ( self::isSupportedIssueCmd($action) ) { $this->action = $action; if ( $install = self::newFromCmdArgs($args) ) { $this->currInstall = $install; $this->extraArgs = $args; return true; } } return false; } /* * * @return UserCommand * * @throws LSCMException Thrown indirectly by "new self()" call. * * @noinspection PhpDocRedundantThrowsInspection / private static function getUserCommand() { /* * Check if invoked from shell. / if ( empty($_SERVER['argv']) ) { return null; } $args = $_SERVER['argv']; if ( array_shift($args) != __FILE__ ) { return null; } $instance = new self(true); if ( !$instance->initArgs($args) ) { echo 'illegal input ' . implode(' ', $_SERVER['argv']); exit(self::EXIT_ERROR); } return $instance; } /* * * @throws LSCMException Thrown indirectly by self::getUserCommand() call. / public static function run() { if ( $cmd = self::getUserCommand() ) { if ( !defined('LSCM_RUN_AS_USER') ) { Util::define_wrapper('LSCM_RUN_AS_USER', 1); } $ret = $cmd->runAsUser(); exit($ret); } } } /* * This should only be invoked from command line. * * @noinspection PhpUnhandledExceptionInspection */ UserCommand::run(); Back

Edit File : UserCommand.php | Size : 28.72 KB

<?php

/** *********************************************
 * LiteSpeed Web Server Cache Manager
 *
 * @author Michael Alegre
 * @copyright (c) 2018-2023 LiteSpeed Technologies, Inc.
 * *******************************************
 */

namespace Lsc\Wp;

use Exception;
use Lsc\Wp\Context\Context;
use Lsc\Wp\Context\ContextOption;
use Lsc\Wp\Context\UserCLIContextOption;
use Lsc\Wp\Panel\ControlPanel;

/**
 * Running as user - suexec
 */
class UserCommand
{

/**
     * @var int
     */
    const EXIT_ERROR = 1;

/**
     * @var int
     */
    const EXIT_SUCC = 2;

/**
     * @var int
     */
    const EXIT_FAIL = 4;

/**
     * @var int
     */
    const EXIT_INCR_SUCC = 8;

/**
     * @var int
     */
    const EXIT_INCR_FAIL = 16;

/**
     * @var int
     */
    const EXIT_INCR_BYPASS = 32;

/**
     * @var int
     */
    const RETURN_CODE_TIMEOUT = 124;

/**
     * @var string
     */
    const CMD_STATUS = 'status';

/**
     * @var string
     */
    const CMD_ENABLE = 'enable';

/**
     * @var string
     */
    const CMD_DIRECT_ENABLE = 'direct_enable';

/**
     * @var string
     */
    const CMD_MASS_ENABLE = 'mass_enable';

/**
     * @var string
     */
    const CMD_DISABLE = 'disable';

/**
     * @var string
     */
    const CMD_MASS_DISABLE = 'mass_disable';

/**
     * @var string
     */
    const CMD_UPGRADE = 'upgrade';

/**
     * @var string
     */
    const CMD_MASS_UPGRADE = 'mass_upgrade';

/**
     * @var string
     */
    const CMD_UPDATE_TRANSLATION = 'update_translation';

/**
     * @var string
     */
    const CMD_REMOVE_LSCWP_PLUGIN_FILES = 'remove_lscwp_plugin_files';

/**
     * @var string
     */
    const CMD_DASH_NOTIFY = 'dash_notify';

/**
     * @var string
     */
    const CMD_MASS_DASH_NOTIFY = 'mass_dash_notify';

/**
     * @var string
     */
    const CMD_DASH_DISABLE = 'dash_disable';

/**
     * @var string
     */
    const CMD_MASS_DASH_DISABLE = 'mass_dash_disable';

/**
     * @var string
     */
    const CMD_DASH_GET_MSG = 'dash_get_msg';

/**
     * @var string
     */
    const CMD_DASH_ADD_MSG = 'dash_add_msg';

/**
     * @var string
     */
    const CMD_DASH_DELETE_MSG = 'dash_delete_msg';

/**
     * @since 1.12
     * @var string
     */
    const CMD_GET_QUICCLOUD_API_KEY = 'getQuicCloudApiKey';

/**
     * @var bool
     */
    private $asUser;

/**
     * @var WPInstall
     */
    private $currInstall;

/**
     * @var string
     */
    private $action;

/**
     * @var string[]
     */
    private $extraArgs;

/**
     *
     * @param bool $asUser
     *
     * @throws LSCMException  Thrown indirectly by Context::initialize() call.
     */
    private function __construct( $asUser = false )
    {
        if ( ($this->asUser = $asUser) ) {
            require_once __DIR__ . '/../autoloader.php';
            date_default_timezone_set('UTC');
            Context::initialize(new UserCLIContextOption('userCommand'));
        }
    }

/**
     * Handles logging unexpected error output (or not if too long) and returns
     * a crafted message to be displayed instead.
     *
     * @param WPInstall $wpInstall  WordPress Installation object.
     * @param string    $err        Compiled error message.
     * @param int       $lines      Number of $output lines read into the error
     *     msg.
     *
     * @return string  Message to be displayed instead.
     *
     * @throws LSCMException  Thrown indirectly by Logger::error() call.
     * @throws LSCMException  Thrown indirectly by Logger::error() call.
     */
    private static function handleUnexpectedError(
        WPInstall $wpInstall,
                  $err,
                  $lines )
    {
        $msg = 'Unexpected Error Encountered!';
        $path = $wpInstall->getPath();

/**
         * $lines > 500 are likely some custom code triggering a page render.
         * Throw out actual message in this case.
         */
        if ( $lines < 500 ) {
            $match = false;

$commonErrs = array(
                WPInstall::ST_ERR_EXECMD_DB =>
                    'Error establishing a database connection'
            );

foreach ( $commonErrs as $statusBit => $commonErr ) {

if ( strpos($err, $commonErr) !== false ) {
                    $wpInstall->unsetStatusBit(WPInstall::ST_ERR_EXECMD);
                    $wpInstall->setStatusBit($statusBit);

$msg .= " $commonErr.";
                    $match = true;
                    break;
                }
            }

if ( !$match ) {
                Logger::error("$path - $err");
                return "$msg See " . ContextOption::LOG_FILE_NAME
                    . " for more information.";
            }
        }

Logger::error("$path - $msg");
        return $msg;
    }

/**
     * Parse out locale and plugin version information from issue() result
     * output GET_TRANSLATION or BAD_TRANSLATION line.
     *
     * @since 1.14
     *
     * @param string $line
     *
     * @return string[]
     */
    private static function parseTranslationLocaleAndPluginVer( $line )
    {
        list($locale, $pluginVer) = explode(' ', $line);

return array( 'locale' => $locale, 'pluginVer' => $pluginVer );
    }

/**
     *
     * @since 1.9
     *
     * @param WPInstall $wpInstall
     * @param string    $output
     *
     * @throws LSCMException  Thrown indirectly by
     *     PluginVersion::retrieveTranslation() call.
     * @throws LSCMException  Thrown indirectly by self::subCommandIssue() call.
     * @throws LSCMException  Thrown indirectly by
     *     PluginVersion::removeTranslationZip() call.
     */
    private static function handleGetTranslationOutput(
        WPInstall $wpInstall,
                  $output )
    {
        $translationInfo = self::parseTranslationLocaleAndPluginVer($output);

$translationRetrieved = PluginVersion::retrieveTranslation(
            $translationInfo['locale'],
            $translationInfo['pluginVer']
        );

if ( $translationRetrieved ) {
            $subOutput =
                self::subCommandIssue(self::CMD_UPDATE_TRANSLATION, $wpInstall);

foreach ( $subOutput as $subLine ) {

if ( preg_match('/BAD_TRANSLATION=(.+)/', $subLine, $m) ) {
                    $badTranslationInfo =
                        self::parseTranslationLocaleAndPluginVer($m[1]);

PluginVersion::removeTranslationZip(
                        $badTranslationInfo['locale'],
                        $badTranslationInfo['pluginVer']
                    );
                }
            }
        }
    }

/**
     *
     * @since 1.9
     *
     * @param WPInstall $wpInstall
     * @param string    $line
     * @param int       $retStatus
     * @param int       $cmdStatus
     * @param string    $err
     *
     * @return bool
     *
     * @throws LSCMException  Thrown indirectly by
     *     $wpInstall->populateDataFromUrl() call.
     * @throws LSCMException  Thrown indirectly by
     *     self::handleGetTranslationOutput() call.
     */
    private static function handleResultOutput(
        WPInstall $wpInstall,
                  $line,
                  &$retStatus,
                  &$cmdStatus,
                  &$err )
    {
        if ( preg_match('/SITEURL=(.+)/', $line, $m) ) {

if ( !$wpInstall->populateDataFromUrl($m[1]) ) {
                /**
                 * Matching docroot could not be found, ignore other
                 * output. setCmdStatusAndMsg() etc already handled in
                 * setSiteUrl().
                 */
                return false;
            }
        }
        elseif ( preg_match('/STATUS=(.+)/', $line, $m) ) {
            $retStatus = (int)$m[1];
        }
        elseif ( preg_match('/MASS_INCR=(.+)/', $line, $m) ) {

if ( $m[1] == 'SUCC' ) {
                $cmdStatus |= UserCommand::EXIT_INCR_SUCC;
            }
            elseif ( $m[1] == 'FAIL' ) {
                $cmdStatus |= UserCommand::EXIT_INCR_FAIL;
            }
            elseif( $m[1] = 'BYPASS' ) {
                $cmdStatus |= UserCommand::EXIT_INCR_BYPASS;
            }
        }
        elseif ( preg_match('/GET_TRANSLATION=(.+)/', $line, $m) ) {
            self::handleGetTranslationOutput($wpInstall, $m[1]);
        }
        else {
            $err .= "Unexpected result line: $line\n";
        }

return true;
    }

/**
     *
     * @since 1.9
     *
     * @param WPInstall $wpInstall
     *
     * @throws LSCMException  Thrown indirectly by self::subCommandIssue() call.
     */
    private static function removeLeftoverLscwpFiles( WPInstall $wpInstall )
    {
        self::subCommandIssue(self::CMD_REMOVE_LSCWP_PLUGIN_FILES, $wpInstall);

$wpInstall->removeNewLscwpFlagFile();
    }

/**
     *
     * @param string    $action
     * @param WPInstall $wpInstall
     * @param array     $extraArgs
     *
     * @return string
     *
     * @throws LSCMException  Thrown indirectly by $wpInstall->getPhpBinary()
     *     call.
     * @throws LSCMException  Thrown indirectly by Context::getOption() call.
     */
    protected static function getIssueCmd(
                  $action,
        WPInstall $wpInstall,
        array     $extraArgs = array() )
    {
        $su = $wpInstall->getSuCmd();
        $timeout = ControlPanel::PHP_TIMEOUT;
        $phpBin = $wpInstall->getPhpBinary();
        $path = $wpInstall->getPath();
        $serverName = $wpInstall->getData(WPInstall::FLD_SERVERNAME);
        $env = Context::getOption()->getInvokerName();

if ( $serverName === null ) {
            $serverName = $docRoot = 'x';
        }
        else {
            $docRoot = $wpInstall->getData(WPInstall::FLD_DOCROOT);

if ( $docRoot === null ) {
                $docRoot = 'x';
            }
        }

$modifier = implode(' ', $extraArgs);
        $file = __FILE__;

return "$su -c \"cd $path/wp-admin && timeout $timeout $phpBin $file "
            . "$action $path $docRoot $serverName $env"
            . (($modifier !== '') ? " $modifier\"" : '"');
    }

/**
     *
     * @since 1.12
     *
     * @param string    $action
     * @param WPInstall $wpInstall
     * @param string[]  $extraArgs
     *
     * @return null|string
     *
     * @throws LSCMException  Thrown indirectly by self::preIssueValidation()
     *     call.
     * @throws LSCMException  Thrown indirectly by self::getIssueCmd() call.
     * @throws LSCMException  Thrown indirectly by Logger::debug() call.
     * @throws LSCMException  Thrown indirectly by Logger::debug() call.
     * @throws LSCMException  Thrown indirectly by Logger::logMsg() call.
     * @throws LSCMException  Thrown indirectly by Logger::logMsg() call.
     */
    public static function getValueFromWordPress(
                  $action,
        WPInstall $wpInstall,
        array     $extraArgs = array() )
    {
        if ( !self::preIssueValidation($action, $wpInstall, $extraArgs) ) {
            return null;
        }

$cmd = self::getIssueCmd($action, $wpInstall, $extraArgs);

exec($cmd, $output, $return_var);

Logger::debug(
            "getValueFromWordPress command $action=$return_var $wpInstall\n$cmd"
        );
        Logger::debug('output = ' . var_export($output, true));

$ret = null;
        $debug = $upgrade = $err = '';
        $curr = &$err;

foreach ( $output as $line ) {

/**
             * If this line is not present in output, did not return normally.
             * This line will appear after any [UPGRADE] output.
             */
            if ( strpos($line, 'LS UserCommand Output Start') !== false ) {
                continue;
            }
            elseif ( strpos($line, '[RESULT]') !== false ) {

if ( preg_match('/API_KEY=(.+)/', $line, $m) ) {
                    $ret = $m[1];
                }
                else {
                    $err .= "Unexpected result line $line\n";
                }
            }
            elseif ( ($pos = strpos($line, '[DEBUG]')) !== false ) {
                $debug .= substr($line, $pos + 7) . "\n";
                $curr = &$debug;
            }
            elseif ( strpos($line, '[UPGRADE]') !== false ) {
                //Ignore this output
                $curr = &$upgrade;
            }
            else {
                $curr .= "$line\n";
            }
        }

$path = $wpInstall->getPath();

if ( $debug ) {
            Logger::logMsg("$path - $debug", Logger::L_DEBUG);
        }

if ( $err ) {
            Logger::logMsg("$path - $err", Logger::L_ERROR);
        }

return $ret;
    }

/**
     *
     * @since 1.14
     *
     * @param string    $subAction
     * @param WPInstall $wpInstall
     *
     * @return string[]
     *
     * @throws LSCMException  Thrown indirectly by self::getIssueCmd() call.
     * @throws LSCMException  Thrown indirectly by Logger::debug() call.
     * @throws LSCMException  Thrown indirectly by Logger::debug() call.
     */
    private static function subCommandIssue(
        $subAction,
        WPInstall $wpInstall )
    {
        $subCmd = self::getIssueCmd($subAction, $wpInstall);

exec($subCmd, $subOutput, $subReturn_var);

Logger::debug(
            "Issue sub command $subAction=$subReturn_var $wpInstall\n$subCmd"
        );
        Logger::debug('sub output = ' . var_export($subOutput, true));

return $subOutput;
    }

/**
     *
     * @param string    $action
     * @param WPInstall $wpInstall
     * @param string[]  $extraArgs
     *
     * @return bool
     *
     * @throws LSCMException  Thrown indirectly by self::preIssueValidation()
     *     call.
     * @throws LSCMException  Thrown indirectly by self::getIssueCmd() call.
     * @throws LSCMException  Thrown indirectly by Logger::debug() call.
     * @throws LSCMException  Thrown indirectly by Logger::debug() call.
     * @throws LSCMException  Thrown indirectly by
     *     self::removeLeftoverLscwpFiles() call.
     * @throws LSCMException  Thrown indirectly by self::handleResultOutput()
     *     call.
     * @throws LSCMException  Thrown indirectly by Logger::logMsg() call.
     * @throws LSCMException  Thrown indirectly by Logger::logMsg() call.
     * @throws LSCMException  Thrown indirectly by $wpInstall->addUserFlagFile()
     *     call.
     * @throws LSCMException  Thrown indirectly by Logger::error() call.
     * @throws LSCMException  Thrown indirectly by self::handleUnexpectedError()
     *     call.
     */
    public static function issue(
                  $action,
        WPInstall $wpInstall,
        array     $extraArgs = array() )
    {
        if ( !self::preIssueValidation($action, $wpInstall, $extraArgs) ) {
            return false;
        }

$cmd = self::getIssueCmd($action, $wpInstall, $extraArgs);

exec($cmd, $output, $return_var);

Logger::debug(
            "Issue command $action=$return_var $wpInstall\n$cmd"
        );
        Logger::debug('output = ' . var_export($output, true));

if ( $wpInstall->hasNewLscwpFlagFile() ) {
            self::removeLeftoverLscwpFiles($wpInstall);
        }

$errorStatus = $retStatus = $cmdStatus = 0;

switch ( $return_var ) {

case UserCommand::RETURN_CODE_TIMEOUT:
                $errorStatus |= WPInstall::ST_ERR_TIMEOUT;
                break;

case UserCommand::EXIT_ERROR:
            case 255:
                $errorStatus |= WPInstall::ST_ERR_EXECMD;
                break;

//no default
        }

$isExpectedOutput = false;
        $unexpectedLines = 0;
        $succ = $upgrade = $err = $msg = $logMsg = '';
        $logLvl = -1;
        $curr = &$err;

foreach ( $output as $line ) {

/**
             * If this line is not present in output, did not return normally.
             * This line will appear after any [UPGRADE] output.
             */
            if ( strpos($line, 'LS UserCommand Output Start') !== false ) {
                $isExpectedOutput = true;
            }
            elseif ( strpos($line, '[RESULT]') !== false ) {

$ret = self::handleResultOutput(
                    $wpInstall,
                    $line,
                    $retStatus,
                    $cmdStatus,
                    $err
                );

if ( !$ret ) {

/**
                     * Problem handling RESULT output, ignore other output.
                     */
                    return false;
                }
            }
            elseif ( ($pos = strpos($line, '[SUCCESS]')) !== false ) {
                $succ .= substr($line, $pos + 9) . "\n";
                $curr = &$succ;
            }
            elseif ( ($pos = strpos($line, '[ERROR]')) !== false ) {
                $err .= substr($line, $pos + 7) . "\n";
                $curr = &$err;
            }
            elseif ( strpos($line, '[LOG]') !== false ) {

if ( $logMsg != '' ) {
                    Logger::logMsg(trim($logMsg), $logLvl);
                    $logMsg = '';
                }

if ( preg_match('/\[(\d+)] (.+)/', $line, $m) ) {
                    $logLvl = $m[1];
                    $logMsg = "{$wpInstall->getPath()} - $m[2]\n";
                }

$curr = &$logMsg;
            }
            elseif ( strpos($line, '[UPGRADE]') !== false ) {
                /**
                 * Ignore this output
                 */
                $curr = &$upgrade;
            }
            else {

if ( !$isExpectedOutput ) {
                    $line = htmlentities($line);
                    $unexpectedLines++;
                }

$curr .= "$line\n";
            }
        }

if ( $logMsg != '' ) {
            Logger::logMsg(trim($logMsg), $logLvl);
        }

if ( !$isExpectedOutput && !$errorStatus ) {
            $errorStatus |= WPInstall::ST_ERR_EXECMD;
        }

if ( $errorStatus ) {
            $wpInstall->addUserFlagFile(false);
            $errorStatus |= WPInstall::ST_FLAGGED;

$cmdStatus |= UserCommand::EXIT_INCR_FAIL;
        }

$newStatus = ($errorStatus | $retStatus);

if ( $newStatus != 0 ) {
            $wpInstall->setStatus($newStatus);
        }

if ( $succ ) {
            $cmdStatus |= UserCommand::EXIT_SUCC;
            $msg = $succ;
        }

if ( $err ) {

if ( $return_var == UserCommand::EXIT_FAIL ) {
                $cmdStatus |= UserCommand::EXIT_FAIL;
            }
            else {
                $cmdStatus |= UserCommand::EXIT_ERROR;
            }

if ( $isExpectedOutput ) {
                $msg = $err;
                Logger::error("{$wpInstall->getPath()} - $err");
            }
            else {
                $msg = self::handleUnexpectedError(
                    $wpInstall,
                    $err,
                    $unexpectedLines
                );
            }
        }

$wpInstall->setCmdStatusAndMsg($cmdStatus, $msg);

return true;
    }

/**
     *
     * @param string[] $args
     *
     * @return null|WPInstall
     */
    public static function newFromCmdArgs( array &$args )
    {
        if ( !($wpPath = array_shift($args))
                || !($docRoot = array_shift($args))
                || !($serverName = array_shift($args)) ) {

return null;
        }

if ( !is_dir($wpPath) ) {
            return null;
        }

/**
         * LSCWP_REF used by LSCWP plugin.
         */
        Util::define_wrapper('LSCWP_REF', array_shift($args));

$install = new WPInstall($wpPath);

if ( $docRoot != 'x' ) {
            $install->setDocRoot($docRoot);
        }

if ( $serverName != 'x' ) {
            $install->setServerName($serverName);
        }

return $install;
    }

/**
     *
     * @param string    $action
     * @param WPInstall $wpInstall
     * @param string[]  $extraArgs  Not used at the moment.
     *
     * @return bool
     *
     * @throws LSCMException  Thrown when $action value is unsupported.
     * @throws LSCMException  Thrown indirectly by $wpInstall->hasValidPath()
     *     call.
     * @throws LSCMException  Thrown indirectly by Logger::debug() call.
     * @throws LSCMException  Thrown indirectly by $wpInstall->refreshStatus()
     *     call.
     * @throws LSCMException  Thrown indirectly by $wpInstall->addUserFlagFile()
     *     call.
     * @throws LSCMException  Thrown indirectly by Logger::debug() call.
     * @throws LSCMException  Thrown indirectly by
     *     DashNotifier::prepLocalDashPluginFiles() call.
     *
     * @noinspection PhpUnusedParameterInspection
     */
    private static function preIssueValidation(
                  $action,
        WPInstall $wpInstall,
        array     $extraArgs )
    {
        if ( !self::isSupportedIssueCmd($action) ) {
            throw new LSCMException(
                "Illegal action $action.",
                LSCMException::E_PROGRAM
            );
        }

if ( !$wpInstall->hasValidPath() ) {
            return false;
        }

switch ( $action ) {

case self::CMD_MASS_ENABLE:
            case self::CMD_MASS_DISABLE:
            case self::CMD_MASS_UPGRADE:

if ( $wpInstall->hasFlagFile() ) {
                    Logger::debug(
                        "Bypass mass operation for flagged install $wpInstall"
                    );
                    return false;
                }

//fallthrough
            case self::CMD_MASS_DASH_NOTIFY:
            case self::CMD_MASS_DASH_DISABLE:

if ( $wpInstall->hasFatalError() ) {
                    $wpInstall->refreshStatus();

if ( $wpInstall->hasFatalError() ) {
                        $wpInstall->addUserFlagFile(false);

Logger::debug(
                            'Bypassed mass operation for error install and '
                                . "flagged $wpInstall"
                        );
                        return false;
                    }
                }

//no default
        }

if ( $action == self::CMD_DASH_NOTIFY
                || $action == self::CMD_MASS_DASH_NOTIFY ) {

DashNotifier::prepLocalDashPluginFiles();
        }

return true;
    }

/**
     *
     * @since 1.9  Changed echoed output format to include "[LOG][$lvl] $msg".
     *     Stopped echoing "[DEBUG] $msg" output.
     *
     * @return int
     */
    private function runAsUser()
    {
        try
        {
            $ret = 0;

if ( $this->action == self::CMD_REMOVE_LSCWP_PLUGIN_FILES ) {
                $proc = WPCaller::getInstance($this->currInstall, false);

$proc->removeLscwpPluginFiles();
                $ret = self::EXIT_SUCC;
            }
            else {
                $proc = WPCaller::getInstance($this->currInstall);

switch ( $this->action ) {

case self::CMD_STATUS:
                        $ret = $proc->updateStatus(true);
                        break;

case self::CMD_ENABLE:
                        $ret = $proc->enable($this->extraArgs);
                        $this->currInstall->removeNewLscwpFlagFile();
                        break;

case self::CMD_DIRECT_ENABLE:
                        $ret = $proc->directEnable();
                        $this->currInstall->removeNewLscwpFlagFile();
                        break;

case self::CMD_MASS_ENABLE:
                        $ret = $proc->massEnable($this->extraArgs);
                        $this->currInstall->removeNewLscwpFlagFile();
                        break;

case self::CMD_DISABLE:
                        $ret = $proc->disable($this->extraArgs);
                        break;

case self::CMD_MASS_DISABLE:
                        $ret = $proc->massDisable($this->extraArgs);
                        break;

case self::CMD_UPGRADE:
                        $ret = $proc->upgrade($this->extraArgs);
                        break;

case self::CMD_MASS_UPGRADE:
                        $ret = $proc->massUpgrade($this->extraArgs);
                        break;

case self::CMD_UPDATE_TRANSLATION:
                        $proc->updateTranslationFiles();
                        $ret = self::EXIT_SUCC;
                        break;

case self::CMD_DASH_NOTIFY:
                        $ret = $proc->dashNotify($this->extraArgs);
                        break;

case self::CMD_MASS_DASH_NOTIFY:
                        $ret = $proc->massDashNotify($this->extraArgs);
                        break;

case self::CMD_DASH_DISABLE:
                        $ret = $proc->dashDisable($this->extraArgs);
                        break;

case self::CMD_MASS_DASH_DISABLE:
                        $ret = $proc->massDashDisable($this->extraArgs);
                        break;

case self::CMD_GET_QUICCLOUD_API_KEY:
                        $proc->getQuicCloudAPIKey(true);
                        $ret = self::EXIT_SUCC;
                        break;

//no default
                }
            }

echo "LS UserCommand Output Start\n";

foreach ( $proc->getOutputResult() as $key => $value ) {
                echo "[RESULT] $key=$value\n";
            }

foreach ( Logger::getUiMsgs(Logger::UI_SUCC) as $msg ) {
                echo "[SUCCESS] $msg\n";
            }

foreach ( Logger::getUiMsgs(Logger::UI_ERR) as $msg ) {
                echo "[ERROR] $msg\n";
            }

foreach ( Logger::getLogMsgQueue() as $logEntry ) {
                $lvl = $logEntry->getLvl();
                $msg = $logEntry->getMsg();

echo "[LOG][$lvl] $msg\n";
            }
        }
        catch ( Exception $e )
        {
            $ret = UserCommand::EXIT_ERROR;

if ( $e instanceof LSCMException
                    && $e->getCode() == LSCMException::E_NON_FATAL ) {

$ret = UserCommand::EXIT_FAIL;
            }

echo "LS UserCommand Output Start\n";
            echo "[ERROR] {$e->getMessage()}\n";
        }

return $ret;
    }

/**
     *
     * @param string $action
     *
     * @return bool
     */
    private static function isSupportedIssueCmd( $action )
    {
        $supported = array(
            self::CMD_STATUS,
            self::CMD_ENABLE,
            self::CMD_DIRECT_ENABLE,
            self::CMD_MASS_ENABLE,
            self::CMD_DISABLE,
            self::CMD_MASS_DISABLE,
            self::CMD_UPGRADE,
            self::CMD_MASS_UPGRADE,
            self::CMD_UPDATE_TRANSLATION,
            self::CMD_REMOVE_LSCWP_PLUGIN_FILES,
            self::CMD_DASH_NOTIFY,
            self::CMD_MASS_DASH_NOTIFY,
            self::CMD_DASH_DISABLE,
            self::CMD_MASS_DASH_DISABLE,
            self::CMD_GET_QUICCLOUD_API_KEY
        );

return in_array($action, $supported);
    }

/**
     *
     * @param string[] $args
     *
     * @return bool
     */
    private function initArgs( $args )
    {
        $action = array_shift($args);

if ( self::isSupportedIssueCmd($action) ) {
            $this->action = $action;

if ( $install = self::newFromCmdArgs($args) ) {
                $this->currInstall = $install;
                $this->extraArgs = $args;
                return true;
            }
        }

return false;
    }

/**
     *
     * @return UserCommand
     *
     * @throws LSCMException  Thrown indirectly by "new self()" call.
     *
     * @noinspection PhpDocRedundantThrowsInspection
     */
    private static function getUserCommand()
    {
        /**
         * Check if invoked from shell.
         */
        if ( empty($_SERVER['argv']) ) {
            return null;
        }

$args = $_SERVER['argv'];

if ( array_shift($args) != __FILE__ ) {
            return null;
        }

$instance = new self(true);

if ( !$instance->initArgs($args) ) {
            echo 'illegal input ' . implode(' ', $_SERVER['argv']);
            exit(self::EXIT_ERROR);
        }

return $instance;
    }

/**
     *
     * @throws LSCMException  Thrown indirectly by self::getUserCommand() call.
     */
    public static function run()
    {
        if ( $cmd = self::getUserCommand() ) {

if ( !defined('LSCM_RUN_AS_USER') ) {
                Util::define_wrapper('LSCM_RUN_AS_USER', 1);
            }

$ret = $cmd->runAsUser();
            exit($ret);
        }
    }

}

/**
 * This should only be invoked from command line.
 *
 * @noinspection PhpUnhandledExceptionInspection
 */
UserCommand::run();

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