<?php

/**
 *
 * @author LIN
 * @copyright pnetlab.com
 * @link https://www.pnetlab.com/
 *
 *
 *
 * Device: device factory
 *  |
 *  |__ Device Type : extends device factory (device_iol.php, device_dynamips.php, device_qemu.php, device_docker.php, device_vpcs.php)
 *          |
 *          |__ Device Line: Extends device type (device_[device line name].php)
 *          |
 *          |__ Adapter : Line card, network module
 *
 *
 */

/**   
 * @property type $console protocol. It's optional.
 * @property type $config Filename for the startup configuration. It's optional.
 * @property type $config_data The full startup configuration. It's optional.
 * @property type $cpu CPUs configured on the node. It's optional.
 * @property type $delay Seconds before starting the node. It's optional.
 * @property type $id Device ID. It's mandatory and set during contruction phase.
 * @property type $ethernet Number of configured Ethernet interfaces/portgroups. It's optional.
 * @property type $ethernets Configured Ethernet interfaces/portgroups. It's optional.
 * @property type $icon Icon used on diagram. It's optional.
 * @property type $idlepc Idle PC for Dynamips nodes. It's optional.
 * @property type $image Image for the node. It's mandatory and automatically set to one of the available one.
 * @property type $lab_id Lab ID. It's mandatory and set during contruction phase.
 * @property type $left Left margin for visual position. It's optional.
 * @property type $name Name of the node. It's optional but suggested.
 * @property type $nvram RAM configured on the node. It's optional.
 * @property type $port Console port. It's mandatory and set during contruction phase.
 * @property type $ram NVRAM configured on the node. It's optional.
 * @property type $serial Number of configured Serial interfaces/porgroups. It's optional (IOL only)
 * @property type $serials Configured Serial interfaces/porgroups. It's optional (IOL only)
 * @property type $slots Array of configured slots. It's optional (Dynamips only)
 * @property type $template Template of the node. It's mandatory.
 * @property type $tenant Tenant ID. It's mandatory and set during contruction phase.
 * @property type $top Top margin for visual position.
 * @property type $type Type of the node. It's mandatory.

 */

class device
{
    public $console;
    public $console_2nd;
    public $config;
    public $config_data;
    public $multi_config = [];
    public $config_script;
    public $cpu;
    public $cpulimit = 1;
    public $delay;
    public $ethernet;
    public $pci_mode;
    public $firstmac;
    public $icon;
    public $idlepc;
    public $image;
    public $left;
    public $name;
    public $first_nic;
    public $nvram;
    public $ram;
    public $etba;
    public $TPM;
    public $UEFI = 0;
    public $serial;
    public $script_timeout;
    public $top;
    public $terminaltype = "linux";
    public $backspace = 127;
    public $size = "";
    public $mtu = 9000;
    public $inject_as_first_nic = 0;
    protected $node = null;
    protected $ethernets = [];
    protected $serials = [];
    protected $modules = [];
    protected $tpl = []; // save template value

    function __construct($node)
    {
        $this->node = $node;
        try {
            $this->tpl = yaml_parse_file(
                BASE_DIR .
                    "/html/" .
                    TPL_DIR .
                    "/" .
                    $this->getTemplate() .
                    ".yml"
            );
        } catch (Exception $e) {
            throw new ResponseException("Can not load template file {data}", [
                "data" => $this->getTemplate(),
            ]);
        }
    }

    /**
     * Create and return an unique MAC address for Node
     */
    public function createNodeMac($id)
    {
        $session = $this->getSession();
        $session = sprintf("%06x", $session);
        $mac =
            "50:" .
            chunk_split($session, 2, ":") .
            "00:" .
            sprintf("%02x", $id);
        return $mac;
    }

    /**
     * Create and Return an unique the First MAC address for Node
     */
    private $createFirstMacResult = null;
    public function createFirstMac()
    {
        if (IsValidMac($this->firstmac)) {
            return $this->firstmac;
        }

        if (!$this->createFirstMacResult || $this->createFirstMacResult == "") {
            $session = $this->getSession();
            $session = sprintf("%04x", $session);
            $random = sprintf("%04x", rand(0, 16 * 16 * 16 * 16));
            $mac =
                "50:" .
                chunk_split($random, 2, ":") .
                chunk_split($session, 2, ":") .
                "00";
            $this->createFirstMacResult = $mac;
        }

        return $this->createFirstMacResult;
    }

    /**
     * Create ethernet interfaces for onboard card
     * @property quantity : number of ethernet interface
     */
    public function createEthernets($quantity)
    {
        return $this->ethernets;
    }

    /**
     * Create serial interfaces for onboard card
     * @property quantity : number of serial interface
     */
    public function createSerials($quantity)
    {
        return $this->serials;
    }

    /**
     * Add network module or card to device
     * @property slot: Slot id
     * @property subSlot: Sub-Slot id
     * @property nm: Network module name
     *
     */
    public function createModule($slot, $subSlot, $nm)
    {
        return $this->modules;
    }

    /**
     * Return all ethernets interface instances of device.
     * all interfaces in onboard and network modules
     *
     */
    public function getEthernets()
    {
        $ethernets = $this->ethernets;
        foreach ($this->modules as $module) {
            foreach ($module->getEthernets() as $ethernet) {
                $ethernets[$ethernet->getId()] = $ethernet;
            }
        }
        return $ethernets;
    }

    /**
     * Return all serials interface instances of device.
     * all interfaces in onboard and network modules
     *
     */
    public function getSerials()
    {
        $serials = $this->serials;
        foreach ($this->modules as $module) {
            foreach ($module->getserials() as $serial) {
                $serials[$serial->getId()] = $serial;
            }
        }
        return $serials;
    }

    public function getInterfaces()
    {
        return $this->getEthernets() + $this->getSerials();
    }

    /**
     *
     * Return Flag to setting all interfaces and modules
     * in comand
     */

    public function getFlag()
    {
        $flag = "";
        foreach ($this->ethernets as $eth) {
            $flag .= " " . $eth->getFlag();
        }
        foreach ($this->serials as $serial) {
            $flag .= " " . $serial->getFlag();
        }
        foreach ($this->modules as $module) {
            $flag .= " " . $module->getFlag();
        }
        return preg_replace("/\s+/m", " ", $flag);
    }

    /**
     * Return all Network Modules
     *
     */
    public function getModules()
    {
        return $this->modules;
    }

    /**
     * Return session id of node.
     * When a node is loaded system will create a unique id (session) and save in database
     * session id will be deleted when you destroy lab.
     */
    public function getSession()
    {
        return $this->node->getSession();
    }

    /**
     * Return Lab session id
     */

    public function getLabSession()
    {
        return $this->node->getLabSession();
    }

    public function getconsole()
    {
        return $this->console;
    }
    public function getconsole_2nd()
    {
        return $this->console_2nd;
    }

    /**
     *
     * Get console port of Node
     */
    public function getPort()
    {
        return $this->node->getPort();
    }

    /**
     *
     * Get secondary port of Node
     */
    public function getSecondPort()
    {
        return $this->node->getSecondPort();
    }

    /**
     * Get Remote node by id
     */
    public function getNode($id)
    {
        return $this->node->getNode($id);
    }

    /**
     * Get network by ID
     */
    public function getNetwork($id)
    {
        return $this->node->getNetwork($id);
    }

    /**
     * Return Running folder of Node
     */
    public function getRunningPath()
    {
        return $this->node->getRunningPath();
    }

    /**
     * Return Node type
     */
    public function getNType()
    {
        return $this->node->getNType();
    }

    /**
     * Return Node template name
     */

    public function getTemplate()
    {
        return $this->node->getTemplate();
    }

    /**
     * Return pod of user who create node session
     */

    public function getHost()
    {
        return $this->node->getHost();
    }

    /**
     * @return Status of node
     */

    public function getStatus()
    {
        return $this->node->getStatus();
    }

    /**
     * @return int User POD of current session
     */
    public function getTenant()
    {
        return $this->node->getTenant();
    }

    /**
     * @return int ID of node in lab
     */
    public function getId()
    {
        return $this->node->getId();
    }

    /**
     *
     *@return ScriptTimeout: the time system will wait before running script to apply start-up configuration
     * The time wait = Script Timeout + Delay
     */
    public function getScriptTimeout()
    {
        if ($this->script_timeout > 0) {
            return $this->script_timeout;
        }
        return $this->node->getScriptTimeout();
    }
    public function getIolId()
    {
        return $this->node->getIolId();
    }

    public function getCpu()
    {
        return $this->cpu;
    }
    public function getRam()
    {
        return $this->ram;
    }

    /**
     * Return parameters for a device.
     * The return data of this function will be used to save node's data to .unl file
     * or show on edit node form
     */
    public function getParams()
    {
        return [
            "config" => $this->config,
            "config_data" => base64_encode($this->config_data),
            "multi_config" => base64_encode(json_encode($this->multi_config)),
            "delay" => (int) $this->delay,
            "icon" => $this->icon,
            "console" => $this->console,
            "image" => $this->image,
            "left" => (int) $this->left,
            "name" => $this->name,
            "top" => (int) $this->top,
            "size" => (int) $this->size,
            "ethernet" => (int) $this->ethernet,
            "ram" => (int) $this->ram,
            "mtu" => (int) $this->mtu,
            "backspace" => $this->backspace,
            "terminaltype" =>  $this->terminaltype,


        ];
    }

    /**
     * Using parameters get from .unl file or add edit node form to set value for device instance
     * @property p: node's params get from .unl file or add/edit node form
     *
     */

    public function editParams($p)
    {
        if (isset($p["config"])) {
            $this->config = $p["config"];
        }

        if (isset($p["config_data"])) {
            $this->config_data = base64_decode($p["config_data"]);
        }

        if (isset($p["multi_config"])) {
            try {
                $this->multi_config = json_decode(
                    base64_decode($p["multi_config"]),
                    true
                );
            } catch (Exception $th) {
                $this->multi_config = [];
            }
        }

        if (isset($p["delay"])) {
            $this->delay = (int) $p["delay"];
        }

        if (isset($p["icon"])) {
            $this->icon = $p["icon"] != "" ? $p["icon"] : "Router.png";
        }

        if (isset($p["image"])) {
            $this->image = $p["image"];
        }
        if (isset($p["left"])) {
            $this->left = $p["left"] != "" ? $p["left"] : rand(100, 924);
        }

        if (isset($p["name"])) {
            $this->name = $p["name"];
        }

        if (isset($p["top"])) {
            $this->top = $p["top"] != "" ? $p["top"] : rand(100, 668);
        }

        if (isset($p["size"])) {
            $this->size = $p["size"];
        }
        if (isset($p["console"])) {
            $this->console = $p["console"];
            if (in_array($this->type, ["iol", "dynamips"])) {
                $this->console = "telnet";
            }
        }
        if (isset($p["ethernet"]) && $this->ethernet !== (int) $p["ethernet"]) {
            $this->ethernet = (int) $p["ethernet"];
            $this->createEthernets($this->ethernet);
        }
        if (isset($p["serial"]) && $this->serial !== (int) $p["serial"]) {
            $this->serial = (int) $p["serial"];
            $this->serial($this->serial);
        }
        if (isset($p["backspace"])) {
            $this->backspace = htmlentities($p["backspace"]);
        }
        if (isset($p["terminaltype"])) {
            $this->terminaltype = htmlentities($p["terminaltype"]);
        }

        if (isset($p["ram"])) {
            $this->ram = $p["ram"] != "" ? (int) $p["ram"] : 1024;
        }
        if (isset($p["mtu"])) {
            $this->mtu = (string) $p["mtu"];
        }
    }

    /**
     * Method to get node console URL.
     *
     * @return  string                      Node console URL
     */
    public function getConsoleUrl($html5)
    {
        if ($html5 != 1) {
            switch ($this->console) {
                default:
                case "telnet":
                    return "telnet://" .
                        $_SERVER["SERVER_NAME"] .
                        ":" .
                        $this->getPort();
                    break;
                case "bash":
                    return "telnet://" .
                        $_SERVER["SERVER_NAME"] .
                        ":" .
                        $this->getPort();
                    break;
                case "ssh":
                    return "ssh://" .
                        $_SERVER["SERVER_NAME"] .
                        ":" .
                        $this->getPort();
                    break;
                case "vnc":
                    return "vnc://" .
                        $_SERVER["SERVER_NAME"] .
                        ":" .
                        $this->getPort();
                    break;
                case "rdp":
                    return "/rdp/?target=" .
                        $_SERVER["SERVER_NAME"] .
                        "&port=" .
                        $this->getPort();
                    break;
                case "rdp-tls":
                    return "/rdp/?target=" .
                        $_SERVER["SERVER_NAME"] .
                        "&port=" .
                        $this->getPort();
                    break;
                case "spice":
                    return "spice://" .
                        $_SERVER["SERVER_NAME"] .
                        ":" .
                        $this->getPort();
                    break;
                case "winbox":
                    return "winbox://" .
                        $_SERVER["SERVER_NAME"] .
                        ":" .
                        $this->getPort();
                    break;
                case "http":
                    return "http://" .
                        $_SERVER["SERVER_NAME"] .
                        ":" .
                        $this->getPort();
                    break;
                case "https":
                    return "https://" .
                        $_SERVER["SERVER_NAME"] .
                        ":" .
                        $this->getPort();
                    break;
            }
        } else {
            if ($this->console == "winbox") {
                return "winbox://" .
                    $_SERVER["SERVER_NAME"] .
                    ":" .
                    $this->getPort();
            }
            if ($this->console == "http") {
                return "http://" .
                    $_SERVER["SERVER_NAME"] .
                    ":" .
                    $this->getPort();
            }
            if ($this->console == "https") {
                return "https://" .
                    $_SERVER["SERVER_NAME"] .
                    ":" .
                    $this->getPort();
            }
            return "guacamole";
        }
    }

    /**
     * Method to get node 2nd console URL.
     *
     * @return  string                      Node 2nd console URL
     */
    public function getSecondConsoleUrl($html5)
    {
        if (!isset($this->console_2nd) || $this->console_2nd == "") {
            return "";
        }

        $secondPort = $this->getSecondPort();

        if ($html5 != 1) {
            switch ($this->console_2nd) {
                default:
                case "telnet":
                    return "telnet://" .
                        $_SERVER["SERVER_NAME"] .
                        ":" .
                        $secondPort;
                    break;
                case "bash":
                    return "telnet://" .
                        $_SERVER["SERVER_NAME"] .
                        ":" .
                        $secondPort;
                    break;
                case "ssh":
                    return "ssh://" .
                        $_SERVER["SERVER_NAME"] .
                        ":" .
                        $secondPort;
                    break;
                case "vnc":
                    return "vnc://" .
                        $_SERVER["SERVER_NAME"] .
                        ":" .
                        $secondPort;
                    break;
                case "rdp":
                    return "/rdp/?target=" .
                        $_SERVER["SERVER_NAME"] .
                        "&port=" .
                        $secondPort;
                    break;
                case "rdp-tls":
                    return "/rdp/?target=" .
                        $_SERVER["SERVER_NAME"] .
                        "&port=" .
                        $secondPort;
                    break;
                case "spice":
                    return "spice://" .
                        $_SERVER["SERVER_NAME"] .
                        ":" .
                        $secondPort;
                    break;
                case "winbox":
                    return "winbox://" .
                        $_SERVER["SERVER_NAME"] .
                        ":" .
                        $secondPort;
                    break;
                case "http":
                    return "http://" .
                        $_SERVER["SERVER_NAME"] .
                        ":" .
                        $secondPort;
                    break;
                case "https":
                    return "https://" .
                        $_SERVER["SERVER_NAME"] .
                        ":" .
                        $secondPort;
                    break;
            }
        } else {
            if ($this->console_2nd == "winbox") {
                return "winbox://" .
                    $_SERVER["SERVER_NAME"] .
                    ":" .
                    $secondPort;
            }
            if ($this->console_2nd == "http") {
                return "http://" . $_SERVER["SERVER_NAME"] . ":" . $secondPort;
            }
            if ($this->console_2nd == "https") {
                return "https://" . $_SERVER["SERVER_NAME"] . ":" . $secondPort;
            }
            return "guacamole";
        }
    }

    /**
     *
     * Get Html console link
     * Called when user console to device in HTML console mode
     * @param int index: 1 for primary console; 2 for secondary console
     * @return string link to connect to guacamole.
     */

    public function getGuacConsoleLink($index)
    {
        $html5_db = html5_checkDatabase();
        $username = getUser()["username"];

        if ($index == 1) {
            $console = $this->console;
            $port = $this->getPort();
        } else {
            $console = $this->console_2nd;
            $port = $this->getSecondPort();
        }

        if (!isset($console) || $console == "") {
            $console = "telnet";
        }

        if ($console == "http") {
            return "http://" . $_SERVER["SERVER_NAME"] . ":" . $port;
        }
        if ($console == "https") {
            return "https://" . $_SERVER["SERVER_NAME"] . ":" . $port;
        }

        if (
            $console == "rdp" ||
            $console == "rdp-tls" ||
            $console == "vnc" ||
            $console == "spice" 
        ) {
            html5AddSession(
                $html5_db,
                $this->name . "_" . $this->getId() . "_" . $username,
                $console,
                $port,
                $this->getTenant(),
                null,
                null,
                $this->username,
                $this->password,
                "reconnect",
                $this->getTemplate(),
                null,
                null
            );
        } if (
            $console == "telnet" ||
            $console == "bash" ||
            $console == "ssh"
        ) {
            html5AddSession(
                $html5_db,
                $this->name . "_" . $this->getId() . "_" . $username,
                $console,
                $port,
                $this->getTenant(),
                null,
                null,
                $this->username,
                $this->password,
                "reconnect",
                $this->getTemplate(),
                $this->backspace,
                $this->terminaltype
            );
        }else {
            html5AddSession(
                $html5_db,
                $this->name . "_" . $this->getId() . "_" . $username,
                $console,
                $port,
                $this->getTenant()
            );
        }

        $token = getHtml5Token($this->getTenant());
        $b64id = base64_encode(
            $port . $this->getTenant() . "\0" . "c" . "\0" . "mysql"
        );

        return "/html5/#/client/" . $b64id . "?token=" . $token;
    }

    /**
     *
     * Build command to start device
     */
    public function command()
    {
        return "";
    }

    /**
     * Make device ready for starting
     */
    public function prepare()
    {
        posix_setsid();
        posix_setgid(32768);

        if (
            !is_file($this->getRunningPath() . "/.prepared") &&
            !is_file($this->getRunningPath() . "/.lock")
        ) {
            // Node is not prepared/locked
            if (
                !is_dir($this->getRunningPath()) &&
                !mkdir($this->getRunningPath(), 0775, true)
            ) {
                // Cannot create running directory
                error_log(
                    date("M d H:i:s ") . "ERROR: " . $GLOBALS["messages"][80037]
                );
                return 80037;
            }

            if ($this->config == "1") {
                // Node should use saved startup-config

                $activeConfig = $this->getActiveConfig();
                if ($activeConfig == "") {
                    $startupCfg = $this->config_data;
                } else {
                    $startupCfg = get($this->multi_config[$activeConfig], "");
                }

                if ($startupCfg != "") {
                    if (
                        !dumpConfig(
                            $startupCfg,
                            $this->getRunningPath() . "/startup-config"
                        )
                    ) {
                        error_log(
                            date("M d H:i:s ") .
                                "WARNING: " .
                                $GLOBALS["messages"][80067]
                        );
                    }
                }
            }
        }

        return 0;
    }

    /**
     * Make device ready for starting
     */
    public function start()
    {
        $result = $this->prepare();

        if ($result > 0) {
            return $result;
        }

        if (!chdir($this->getRunningPath())) {
            // Failed to change directory
            error_log(
                date("M d H:i:s ") . "ERROR: " . $GLOBALS["messages"][80047]
            );
            return 80047;
        }

        $cmd = $this->command();

        if ($this->type == "qemu") {
            // check vm / bare for vmx passthrough
            if (HYPERVISOR == "vm") {
                $cmd = preg_replace(
                    "/-cpu *host/",
                    "-cpu host,vmx=off,svm=off",
                    $cmd
                );
                $cmd = preg_replace(
                    "/vmx=off,smv=off([A-Za-z])/",
                    'vmx=off,svm=off,\1',
                    $cmd
                );
            }
        }
        if (is_file($this->getRunningPath() . "/.hibernated")) {
            $flags = " -loadvm pnet-snapshot ";
            unlink($this->getRunningPath() . "/.hibernated");
            $cmd = $cmd . $flags;
        }
        $cmd = secureCmd($cmd) . " 2>&1 &";
        if (!isset($cmd) || $cmd == "") {
            return;
        }
        $cmd = preg_replace("/\s+/m", " ", $cmd);

        error_log(date("M d H:i:s ") . "INFO: CWD is " . getcwd());
        error_log(date("M d H:i:s ") . "INFO: starting " . $cmd);
        // Clean TCP port
        exec("fuser -k -n tcp " . $this->getPort());
        exec($cmd, $o, $rcp);

        if ($rcp == 0 && $this->type != "docker") {
            $ethernets = $this->getEthernets();
            touch($this->getRunningPath() . "/.links_up");
            foreach ($ethernets as $ethernet) {
                if (count($ethernet->getQuality()) > 0) {
                    $ethernet->applyQuality();
                }
                if ($ethernet->getSuspendStatus() == 1) {
                    $ethernet->applySuspendStatus();
                }
            }
        }

        return $rcp;
    }

    /**
     * stop device
     *
     */
    public function stop()
    {
        if ($this->getStatus() != 0) {
            if ($this->getNType() == "docker") {
                $cmd =
                    "sudo docker -H=tcp://127.0.0.1:4243 stop docker" .
                    $this->getSession();
            } else {
                $cmd = "sudo fuser -k -n file " . $this->getRunningPath();
            }
            error_log(date("M d H:i:s ") . "INFO: stopping " . $cmd);
            exec($cmd, $o, $rc);

            if ($this->getStatus() != 0) {
                if ($this->command() != "") {
                    $cmd = 'sudo pkill -term  \'' . $this->command() . '\'';
                    error_log(date("M d H:i:s ") . "INFO: stopping " . $cmd);
                    exec($cmd, $o, $rc);
                }
            }
            usleep(200000); //sleep waiting for vnet free
            #-----------------------------------------------------------------------------------------------------------------------------------------#
            if (!empty($this->getSerials())) {
                $cmd =
                    "sudo ip link | grep ser" .
                    $this->getSession() .
                    '_ | sed \'s/.*\(ser[0-9]\+_[0-9]\+\).*/\1/g\' | while read line; do sudo ip link set $line down ; sudo ip link delete $line ; sudo tunctl -d $line  ; done';
                //error_log(date('M d H:i:s ') . 'ERROR: ' . $cmd);
                exec($cmd, $o, $rc);
            }
            if (!empty($this->getEthernets())) {
                $cmd =
                    "sudo ip link | grep vunl" .
                    $this->getSession() .
                    '_ | sed \'s/.*\(vunl[0-9]\+_[0-9]\+\).*/\1/g\' | while read line; do sudo ip link set $line down ; sudo ip link delete $line ; sudo tunctl -d $line  ; done';
                //error_log(date('M d H:i:s ') . 'ERROR: ' . $cmd);
                exec($cmd, $o, $rc);
            }
            usleep(200000); //sleep waiting for vnet free
            $cmd =
                'sudo ip link  show | grep vnet |  grep DOWN | sed \'s/.*\(vnet[0-9]\+_[0-9]\+\).*/\1/g\' |  while read line; do sudo ifconfig $line down; sudo brctl delbr $line; done';
            // error_log(date('M d H:i:s ') . 'ERROR: ' . $cmd);
            exec($cmd, $o, $rc);

            return 0;
        }

        return 0;
    }
    /*
     * shutdown all nic of node
     *
     */
    public function isolate()
    {
        $interfaces = $this->getInterfaces();
        if (is_file($this->getRunningPath() . "/.links_up")) {
            foreach ($interfaces as $interface) {
                $interface->setSuspendStatus_all_Nics("1");
            }
            touch($this->getRunningPath() . "/.links_down");
            unlink($this->getRunningPath() . "/.links_up");

        } else {
            foreach ($interfaces as $interface) {
                $interface->setSuspendStatus_all_Nics("0");
            }
            unlink($this->getRunningPath() . "/.links_down");
            touch($this->getRunningPath() . "/.links_up");
        }
    }
    

    /**
     * Export configuration
     */

    public function export()
    {
        return 0;
    }

    /**
     * @return multi_config_active Config actived of Lab
     **/
    public function getActiveConfig()
    {
        return $this->node->getActiveConfig();
    }

    /**
     * Wipe Node
     */

    public function wipe()
    {
        $runningPath = $this->getRunningPath();
        if ($runningPath != null && $runningPath != "") {
            $cmd = "sudo rm -rf " . $runningPath;
            exec($cmd, $o, $rc);
        }

        return 0;
    }

    public function __get($name)
    {
        return isset($this->$name) ? $this->name : "";
    }
}
