class FTPExtension

class FTPExtension extends FTP implements ChmodInterface {
    
    /**
     * {@inheritdoc}
     */
    public function connect() {
        $this->connection = ftp_connect($this->hostname, $this->port);
        if (!$this->connection) {
            throw new FileTransferException("Cannot connect to FTP Server, check settings");
        }
        if (!ftp_login($this->connection, $this->username, $this->password)) {
            throw new FileTransferException("Cannot log in to FTP server. Check username and password");
        }
    }
    
    /**
     * {@inheritdoc}
     */
    protected function copyFileJailed($source, $destination) {
        if (!@ftp_put($this->connection, $destination, $source, FTP_BINARY)) {
            throw new FileTransferException("Cannot move @source to @destination", NULL, [
                "@source" => $source,
                "@destination" => $destination,
            ]);
        }
    }
    
    /**
     * {@inheritdoc}
     */
    protected function createDirectoryJailed($directory) {
        if (!ftp_mkdir($this->connection, $directory)) {
            throw new FileTransferException("Cannot create directory @directory", NULL, [
                "@directory" => $directory,
            ]);
        }
    }
    
    /**
     * {@inheritdoc}
     */
    protected function removeDirectoryJailed($directory) {
        $pwd = ftp_pwd($this->connection);
        if (!ftp_chdir($this->connection, $directory)) {
            throw new FileTransferException("Unable to change the current directory to @directory", NULL, [
                '@directory' => $directory,
            ]);
        }
        $list = @ftp_nlist($this->connection, '.');
        if (!$list) {
            $list = [];
        }
        foreach ($list as $item) {
            if ($item == '.' || $item == '..') {
                continue;
            }
            if (@ftp_chdir($this->connection, $item)) {
                ftp_cdup($this->connection);
                $this->removeDirectory(ftp_pwd($this->connection) . '/' . $item);
            }
            else {
                $this->removeFile(ftp_pwd($this->connection) . '/' . $item);
            }
        }
        ftp_chdir($this->connection, $pwd);
        if (!ftp_rmdir($this->connection, $directory)) {
            throw new FileTransferException("Unable to remove the directory @directory", NULL, [
                '@directory' => $directory,
            ]);
        }
    }
    
    /**
     * {@inheritdoc}
     */
    protected function removeFileJailed($destination) {
        if (!ftp_delete($this->connection, $destination)) {
            throw new FileTransferException("Unable to remove the file @file", NULL, [
                '@file' => $destination,
            ]);
        }
    }
    
    /**
     * {@inheritdoc}
     */
    public function isDirectory($path) {
        $result = FALSE;
        $curr = ftp_pwd($this->connection);
        if (@ftp_chdir($this->connection, $path)) {
            $result = TRUE;
        }
        ftp_chdir($this->connection, $curr);
        return $result;
    }
    
    /**
     * {@inheritdoc}
     */
    public function isFile($path) {
        return ftp_size($this->connection, $path) != -1;
    }
    
    /**
     * {@inheritdoc}
     */
    public function chmodJailed($path, $mode, $recursive) {
        if (!ftp_chmod($this->connection, $mode, $path)) {
            throw new FileTransferException("Unable to set permissions on %file", NULL, [
                '%file' => $path,
            ]);
        }
        if ($this->isDirectory($path) && $recursive) {
            $filelist = @ftp_nlist($this->connection, $path);
            if (!$filelist) {
                // empty directory - returns false
                return;
            }
            foreach ($filelist as $file) {
                $this->chmodJailed($file, $mode, $recursive);
            }
        }
    }

}