Sindbad~EG File Manager

<?php

namespace App\Service\Lsws;

use Symfony\Component\Filesystem\Filesystem;
use Symfony\Component\Finder\Finder;

class LswsCommandRunner
{
    /**
     * @var string
     */
    private $lswsRoot;

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

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

    /**
     * @var Filesystem
     */
    private $fs;

    public function __construct(string $lswsRoot, string $user, string $pass)
    {
        $this->lswsRoot = $lswsRoot;
        $this->user = $user;
        $this->pass = $pass;
        $this->fs = new Filesystem();
    }

    /**
     * Restart / reload the litespeed webserver.
     */
    public function restart(): bool
    {
        return $this->sendCommand('restart');
    }

    /**
     * Return the base directory for the $webserverType.
     */
    private function getSocketDir(): string
    {
        return rtrim($this->lswsRoot, '/') . '/admin/tmp/';
    }

    /**
     * Return true if a possible socket found under the $pack seems working and responding.
     */
    private function checkSocketIsAlive(string $path): bool
    {
        $sock = socket_create(AF_UNIX, SOCK_STREAM, 0);
        if ($sock === false) {
            echo sprintf('Cant create a Socket. Error: %s', socket_strerror(socket_last_error()));

            return false;
        }
        try {
            $r = socket_connect($sock, $path) !== false;
        } catch (\Exception $e) {
            $r = false;
        }
        socket_close($sock);

        return $r;
    }

    /**
     * Return the right socket, found under the webserver /admin/tmp/ directory. Sometimes multiple sockets are presents
     * but only one is really alive/working. Return this socket, or null in case of error.
     */
    public function searchSocket(): ?string
    {
        if (!is_dir($this->getSocketDir())) {
            echo sprintf('%s does not exists', $this->getSocketDir());

            return null;
        }

        $finder = (new Finder())
            ->files()
            ->in($this->getSocketDir())
            ->filter(function (\SplFileInfo $file) {
                return $file->getType() === 'socket';
            })
        ;

        foreach ($finder as $file) {
            $path = $file->getRealPath();
            if ($this->checkSocketIsAlive($path)) {
                return $path;
            }
            try {
                $this->fs->remove($path);
            } catch (\Exception $e) {
                echo sprintf('Error while trying to delete useless socket %s. Err: %s', $path, $e->getMessage());
            }
        }

        echo sprintf("Can't find any valid socket in %s", $this->getSocketDir());

        return null;
    }

    /**
     * Send a command to the litespeed server and return true if the command was executed.
     */
    private function sendCommand(string $command): bool
    {
        $path = $this->searchSocket();

        if (is_null($path)) {
            return false;
        }

        $sock = socket_create(AF_UNIX, SOCK_STREAM, 0);
        if ($sock === false) {
            echo sprintf('Cant create a Socket. Error: %s', socket_strerror(socket_last_error()));

            return false;
        }

        try {
            $r = socket_connect($sock, $path);
        } catch (\Exception $e) {
            $r = false;
        }

        if (!$r) {
            echo sprintf('Cant connect to the %s socket. Error: %s', $path, socket_strerror(socket_last_error()));

            return false;
        }

        $buf = 'auth:'.$this->user.':'.$this->pass."\n";
        $buf .= $command."\n".'end of actions';

        $i = socket_write($sock, $buf);

        if ($i === false) {
            echo sprintf('Cant write to the %s socket. Error: %s', $path, socket_strerror(socket_last_error()));

            return false;
        }

        if ($i !== strlen($buf)) {
            echo sprintf('socket_write returned an unexpected value. %s != %s.', strlen($buf), $i);
        }

        if (socket_shutdown($sock, 1) === false) {
            echo 'socket_shutdown returned false';
        }

        socket_shutdown($sock, 1);
        $res = socket_recv($sock, $buffer, 1024, 0);

        if (($res > 0) && (strncasecmp($buffer, 'OK', 2) == 0)) {
            return true;
        } else {
            echo sprintf('socket_recv returned an unexpected value. Socket:%s', $path);
            return false;
        }
    }

}