/**
 * WP eCommerce Admin AJAX functions
 *
 * These are the WPSC Admin AJAX functions
 *
 * @package wp-e-commerce
 * @since 3.7
 *
 * @uses update_option()                              Updates option in the database given key and value
 * @uses wp_delete_term()                             Removes term from the database
 * @uses fetch_rss()                                  DEPRECATED
 * @uses wpsc_member_dedeactivate_subscriptions()     @todo docs
 * @uses wpsc_member_deactivate_subscriptions()       @todo docs
 * @uses wpsc_update_purchase_log_status()            Updates the status of the logs for a purchase
 * @uses transaction_results()                        Main function for creating purchase reports
 * @uses wpsc_find_purchlog_status_name()             Finds name of given status
 */
function wpsc_admin_ajax()
{
    if (!wpsc_is_store_admin()) {
        return;
    }
    global $wpdb;
    if (isset($_POST['action']) && $_POST['action'] == 'product-page-order') {
        $current_order = get_option('wpsc_product_page_order');
        $new_order = $_POST['order'];
        if (isset($new_order["advanced"])) {
            $current_order["advanced"] = array_unique(explode(',', $new_order["advanced"]));
        }
        if (isset($new_order["side"])) {
            $current_order["side"] = array_unique(explode(',', $new_order["side"]));
        }
        update_option('wpsc_product_page_order', $current_order);
        exit(print_r($order, 1));
    }
    if (isset($_POST['save_image_upload_state']) && $_POST['save_image_upload_state'] == 'true' && is_numeric($_POST['image_upload_state'])) {
        $upload_state = (int) (bool) $_POST['image_upload_state'];
        update_option('wpsc_use_flash_uploader', $upload_state);
        exit("done");
    }
    if (isset($_POST['remove_variation_value']) && $_POST['remove_variation_value'] == "true" && is_numeric($_POST['variation_value_id'])) {
        $value_id = absint($_GET['variation_value_id']);
        echo wp_delete_term($value_id, 'wpsc-variation');
        exit;
    }
    if (isset($_REQUEST['log_state']) && $_REQUEST['log_state'] == "true" && is_numeric($_POST['id']) && is_numeric($_POST['value'])) {
        $newvalue = $_POST['value'];
        if ($_REQUEST['suspend'] == 'true') {
            if ($_REQUEST['value'] == 1 && function_exists('wpsc_member_dedeactivate_subscriptions')) {
                wpsc_member_dedeactivate_subscriptions($_POST['id']);
            } elseif (function_exists('wpsc_member_deactivate_subscriptions')) {
                wpsc_member_deactivate_subscriptions($_POST['id']);
            }
            exit;
        } else {
            $log_data = $wpdb->get_row($wpdb->prepare("SELECT * FROM `" . WPSC_TABLE_PURCHASE_LOGS . "` WHERE `id` = '%d' LIMIT 1", $_POST['id']), ARRAY_A);
            if ($newvalue == 2 && function_exists('wpsc_member_activate_subscriptions')) {
                wpsc_member_activate_subscriptions($_POST['id']);
            }
            wpsc_update_purchase_log_status($_POST['id'], $newvalue);
            if ($newvalue > $log_data['processed'] && $log_data['processed'] < 2) {
                transaction_results($log_data['sessionid'], false);
            }
            $status_name = wpsc_find_purchlog_status_name($purchase['processed']);
            echo "document.getElementById(\"form_group_" . absint($_POST['id']) . "_text\").innerHTML = '" . $status_name . "';\n";
            $year = date("Y");
            $month = date("m");
            $start_timestamp = mktime(0, 0, 0, $month, 1, $year);
            $end_timestamp = mktime(0, 0, 0, $month + 1, 0, $year);
            echo "document.getElementById(\"log_total_month\").innerHTML = '" . addslashes(wpsc_currency_display(admin_display_total_price($start_timestamp, $end_timestamp))) . "';\n";
            echo "document.getElementById(\"log_total_absolute\").innerHTML = '" . addslashes(wpsc_currency_display(admin_display_total_price())) . "';\n";
            exit;
        }
    }
}

function wpsc_purchlog_edit_status($purchlog_id = '', $purchlog_status = '')
{
    global $wpdb;
    if (empty($purchlog_id) && empty($purchlog_status)) {
        $purchlog_id = absint($_POST['id']);
        $purchlog_status = absint($_POST['new_status']);
    }
    $purchase_log = new WPSC_Purchase_Log($purchlog_id);
    //in the future when everyone is using the 2.0 merchant api, we should use the merchant class to update the staus,
    // then you can get rid of this hook and have each person overwrite the method that updates the status.
    do_action('wpsc_edit_order_status', array('purchlog_id' => $purchlog_id, 'purchlog_data' => $purchase_log->get_data(), 'new_status' => $purchlog_status));
    $result = wpsc_update_purchase_log_status($purchlog_id, $purchlog_status);
    wpsc_clear_stock_claims();
    return $result;
}

//.........这里部分代码省略.........
                $nvpstr .= "&L_PAYMENTREQUEST_0_QTY{$i}=1";
                $item_total -= $discount_value;
            }
            $item_total = wpsc_paypal_express_format($item_total);
            $shipping_total = wpsc_paypal_express_convert($purchase_log['base_shipping']) + $shipping_total;
            $nvpstr .= '&PAYMENTREQUEST_0_ITEMAMT=' . $item_total;
            $nvpstr .= '&PAYMENTREQUEST_0_SHIPPINGAMT=' . $shipping_total;
            $total = $item_total + $shipping_total;
            if (!wpsc_tax_isincluded()) {
                $tax = wpsc_paypal_express_convert($purchase_log['wpec_taxes_total']);
                $nvpstr .= '&PAYMENTREQUEST_0_TAXAMT=' . $tax;
                $total += $tax;
            }
            // adjust total amount in case we had to round up after converting currency
            if ($total != $paymentAmount) {
                $paymentAmount = $total;
            }
            $nvpstr .= "&PAYMENTREQUEST_0_AMT={$paymentAmount}";
            $resArray = paypal_hash_call("DoExpressCheckoutPayment", $nvpstr);
            /* Display the API response back to the browser.
               If the response from PayPal was a success, display the response parameters'
               If the response was an error, display the errors received using APIError.php. */
            $ack = strtoupper($resArray["ACK"]);
            wpsc_update_customer_meta('paypal_express_reshash', $resArray);
            if ($ack != "SUCCESS") {
                $location = get_option('transact_url') . "&act=error";
            } else {
                $transaction_id = $resArray['PAYMENTINFO_0_TRANSACTIONID'];
                switch ($resArray['PAYMENTINFO_0_PAYMENTSTATUS']) {
                    case 'Processed':
                        // I think this is mostly equivalent to Completed
                    // I think this is mostly equivalent to Completed
                    case 'Completed':
                        wpsc_update_purchase_log_status($sessionid, 3, 'sessionid');
                        transaction_results($sessionid, false);
                        break;
                    case 'Pending':
                        // need to wait for "Completed" before processing
                        wpsc_update_purchase_log_details($sessionid, array('processed' => 2, 'date' => time(), 'transactid' => $transaction_id), 'sessionid');
                        break;
                }
                $location = add_query_arg('sessionid', $sessionid, get_option('transact_url'));
                wpsc_delete_customer_meta('paypal_express_message');
                wp_redirect($location);
                exit;
            }
            wpsc_delete_customer_meta('nzshpcrt_serialized_cart');
            wpsc_delete_customer_meta('nzshpcart');
            $wpsc_cart->empty_cart();
        } else {
            if (isset($_REQUEST['paymentType']) || isset($_REQUEST['token'])) {
                $token = $_REQUEST['token'];
                if (!isset($token)) {
                    $paymentAmount = wpsc_get_customer_meta('paypal_express_converted_amount');
                    $currencyCodeType = wpsc_get_paypal_currency_code();
                    $paymentType = 'Sale';
                    if (get_option('permalink_structure') != '') {
                        $separator = "?";
                    } else {
                        $separator = "&";
                    }
                    $returnURL = urlencode(get_option('transact_url') . $separator . 'currencyCodeType=' . $currencyCodeType . '&paymentType=' . $paymentType . '&paymentAmount=' . $paymentAmount);
                    $cancelURL = urlencode(get_option('transact_url') . $separator . 'paymentType=$paymentType');
                    /* Construct the parameter string that describes the PayPal payment
                    			the varialbes were set in the web form, and the resulting string
                    			is stored in $nvpstr */

function wpsc_transaction_theme()
{
    global $wpdb, $user_ID, $nzshpcrt_gateways, $sessionid, $cart_log_id, $errorcode;
    $errorcode = '';
    $transactid = '';
    $dont_show_transaction_results = false;
    if (isset($_GET['sessionid'])) {
        $sessionid = $_GET['sessionid'];
    }
    if (!isset($_GET['sessionid']) && isset($_GET['ms'])) {
        $sessionid = $_GET['ms'];
    }
    $selected_gateway = wpsc_get_customer_meta('selected_gateway');
    if ($selected_gateway && in_array($selected_gateway, array('paypal_certified', 'wpsc_merchant_paypal_express'))) {
        $sessionid = wpsc_get_customer_meta('paypal_express_sessionid');
    }
    if (isset($_REQUEST['eway']) && '1' == $_REQUEST['eway']) {
        $sessionid = $_GET['result'];
    } elseif (isset($_REQUEST['eway']) && '0' == $_REQUEST['eway']) {
        echo wpsc_get_customer_meta('eway_message');
    } elseif (isset($_REQUEST['payflow']) && '1' == $_REQUEST['payflow']) {
        echo wpsc_get_customer_meta('payflow_message');
        wpsc_delete_customer_meta('payflow_message');
    }
    $dont_show_transaction_results = false;
    if ($selected_gateway) {
        // Replaces the ugly if else for gateways
        switch ($selected_gateway) {
            case 'paypal_certified':
            case 'wpsc_merchant_paypal_express':
                echo wpsc_get_customer_meta('paypal_express_message');
                $reshash = wpsc_get_customer_meta('paypal_express_reshash');
                if (isset($reshash['PAYMENTINFO_0_TRANSACTIONTYPE']) && in_array($reshash['PAYMENTINFO_0_TRANSACTIONTYPE'], array('expresscheckout', 'cart'))) {
                    $dont_show_transaction_results = false;
                } else {
                    $dont_show_transaction_results = true;
                }
                break;
            case 'dps':
                $sessionid = decrypt_dps_response();
                break;
                //paystation was not updating the purchase logs for successful payment - this is ugly as need to have the databse update done in one place by all gatways on a sucsessful transaction hook not some within the gateway and some within here and some not at all??? This is getting a major overhaul but for here and now it just needs to work for the gold cart people!
            //paystation was not updating the purchase logs for successful payment - this is ugly as need to have the databse update done in one place by all gatways on a sucsessful transaction hook not some within the gateway and some within here and some not at all??? This is getting a major overhaul but for here and now it just needs to work for the gold cart people!
            case 'paystation':
                $ec = $_GET['ec'];
                $result = $_GET['em'];
                if ($result == 'Transaction successful' && $ec == 0) {
                    $processed_id = '3';
                }
                if ($result == 'Insufficient Funds' && $ec == 5) {
                    $processed_id = '6';
                }
                if ($processed_id) {
                    wpsc_update_purchase_log_status($sessionid, $processed_id, 'sessionid');
                }
                break;
            case 'wpsc_merchant_paymentexpress':
                // Payment Express sends back there own session id, which is temporarily stored in the Auth field
                // so just swapping that over here
                $query = "SELECT `sessionid` FROM  `" . WPSC_TABLE_PURCHASE_LOGS . "` WHERE  `authcode` ='" . $sessionid . "'";
                $result = $wpdb->get_var($query);
                if ($result != null) {
                    // just in case they are using an older version old gold cart (pre 2.9.5)
                    $sessionid = $result;
                    $dont_show_transaction_results = true;
                }
                break;
            case 'eway_hosted':
                $sessionid = decrypt_eway_uk_response();
                break;
                //default filter for other payment gateways to use
            //default filter for other payment gateways to use
            default:
                $sessionid = apply_filters('wpsc_previous_selected_gateway_' . $selected_gateway, $sessionid);
                break;
        }
    }
    if (!$dont_show_transaction_results) {
        if (!empty($sessionid)) {
            $cart_log_id = $wpdb->get_var($wpdb->prepare("SELECT `id` FROM `" . WPSC_TABLE_PURCHASE_LOGS . "` WHERE `sessionid`= %s LIMIT 1", $sessionid));
            echo transaction_results($sessionid, true);
        } else {
            printf(__('Sorry your transaction was not accepted.<br /><a href="%1$s">Click here to go back to checkout page</a>.', 'wp-e-commerce'), wpsc_get_checkout_url());
        }
    }
}

function wpsc_download_file()
{
    global $wpdb;
    if (isset($_GET['downloadid'])) {
        // strip out anything that isnt 'a' to 'z' or '0' to '9'
        ini_set('max_execution_time', 10800);
        $downloadid = preg_replace("/[^a-z0-9]+/i", '', strtolower($_GET['downloadid']));
        $download_data = $wpdb->get_row($wpdb->prepare("SELECT * FROM `" . WPSC_TABLE_DOWNLOAD_STATUS . "` WHERE `uniqueid` = '%s' AND `downloads` > '0' AND `active`='1' LIMIT 1", $downloadid), ARRAY_A);
        if (is_null($download_data) && is_numeric($downloadid)) {
            $download_data = $wpdb->get_row($wpdb->prepare("SELECT * FROM `" . WPSC_TABLE_DOWNLOAD_STATUS . "` WHERE `id` = %d AND `downloads` > '0' AND `active`='1' AND `uniqueid` IS NULL LIMIT 1", $downloadid), ARRAY_A);
        }
        if (get_option('wpsc_ip_lock_downloads') == 1 && $_SERVER['REMOTE_ADDR'] != null) {
            $ip_number = $_SERVER['REMOTE_ADDR'];
            if ($download_data['ip_number'] == '') {
                // if the IP number is not set, set it
                $wpdb->update(WPSC_TABLE_DOWNLOAD_STATUS, array('ip_number' => $ip_number), array('id' => $download_data['id']));
            } else {
                if ($ip_number != $download_data['ip_number']) {
                    // if the IP number is set but does not match, fail here.
                    exit(_e('This download is no longer valid, Please contact the site administrator for more information.', 'wpsc'));
                }
            }
        }
        $file_id = $download_data['fileid'];
        $file_data = wpsc_get_downloadable_file($file_id);
        if ($file_data == null) {
            exit(_e('This download is no longer valid, Please contact the site administrator for more information.', 'wpsc'));
        }
        if ($download_data != null) {
            if ((int) $download_data['downloads'] >= 1) {
                $download_count = (int) $download_data['downloads'] - 1;
            } else {
                $download_count = 0;
            }
            $wpdb->update(WPSC_TABLE_DOWNLOAD_STATUS, array('downloads' => $download_count), array('id' => $download_data['id']));
            $cart_contents = $wpdb->get_results($wpdb->prepare("SELECT `" . WPSC_TABLE_CART_CONTENTS . "`.*, {$wpdb->posts}.`guid` FROM `" . WPSC_TABLE_CART_CONTENTS . "` LEFT JOIN {$wpdb->posts} ON `" . WPSC_TABLE_CART_CONTENTS . "`.`prodid`= {$wpdb->posts}.`post_parent` WHERE {$wpdb->posts}.`post_type` = 'wpsc-product-file' AND `purchaseid` = %d", $download_data['purchid']), ARRAY_A);
            $dl = 0;
            foreach ($cart_contents as $cart_content) {
                if ($cart_content['guid'] == 1) {
                    $dl++;
                }
            }
            if (count($cart_contents) == $dl) {
                wpsc_update_purchase_log_status($download_data['purchid'], 4);
            }
            do_action('wpsc_alter_download_action', $file_id);
            $file_path = WPSC_FILE_DIR . basename($file_data->post_title);
            $file_name = basename($file_data->post_title);
            if (is_file($file_path)) {
                if (!ini_get('safe_mode')) {
                    set_time_limit(0);
                }
                header('Content-Type: ' . $file_data->post_mime_type);
                header('Content-Length: ' . filesize($file_path));
                header('Content-Transfer-Encoding: binary');
                header('Content-Disposition: attachment; filename="' . $file_name . '"');
                if (isset($_SERVER["HTTPS"]) && $_SERVER["HTTPS"] != '') {
                    /*
                     There is a bug in how IE handles downloads from servers using HTTPS, this is part of the fix, you may also need:
                     session_cache_limiter('public');
                     session_cache_expire(30);
                     At the start of your index.php file or before the session is started
                    */
                    header("Pragma: public");
                    header("Expires: 0");
                    header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
                    header("Cache-Control: public");
                } else {
                    header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
                }
                header("Pragma: public");
                header("Expires: 0");
                // destroy the session to allow the file to be downloaded on some buggy browsers and webservers
                session_destroy();
                wpsc_readfile_chunked($file_path);
                exit;
            } else {
                wp_die(__('Sorry something has gone wrong with your download!', 'wpsc'));
            }
        } else {
            exit(_e('This download is no longer valid, Please contact the site administrator for more information.', 'wpsc'));
        }
    }
}

 /**
  * set_purchase_processed_by_sessionid, this helps change the purchase log status
  * $status = integer status order
  */
 function set_purchase_processed_by_sessionid($status = 1)
 {
     wpsc_update_purchase_log_status($this->session_id, $status, 'sessionid');
 }

/**
 * Updates the 'processed' parameter after a new order is submitted with a free cart.
 *
 * @param  string            $gateway  Name of gateway.  In the case of a free cart, this will be empty.
 * @param  WPSC_Purchase_Log $log      WPSC_Purchase_Log object.
 * @uses   apply_filters               'wpsc_free_checkout_order_status' allows developers to change the status a free cart is saved with.
 * @since  3.9.0
 *
 */
function wpsc_free_checkout_update_processed_status($gateway, $log)
{
    wpsc_update_purchase_log_status($log->get('id'), apply_filters('wpsc_free_checkout_order_status', WPSC_Purchase_Log::ACCEPTED_PAYMENT));
    wp_safe_redirect(add_query_arg('sessionid', $log->get('sessionid'), get_option('transact_url')));
    exit;
}

function wpsc_download_file()
{
    global $wpdb;
    if (isset($_GET['downloadid'])) {
        // strip out anything that isnt 'a' to 'z' or '0' to '9'
        ini_set('max_execution_time', 10800);
        $downloadid = preg_replace("/[^a-z0-9]+/i", '', strtolower($_GET['downloadid']));
        $download_data = $wpdb->get_row($wpdb->prepare("SELECT * FROM `" . WPSC_TABLE_DOWNLOAD_STATUS . "` WHERE `uniqueid` = '%s' AND `downloads` > '0' AND `active`='1' LIMIT 1", $downloadid), ARRAY_A);
        if (is_null($download_data) && is_numeric($downloadid)) {
            $download_data = $wpdb->get_row($wpdb->prepare("SELECT * FROM `" . WPSC_TABLE_DOWNLOAD_STATUS . "` WHERE `id` = %d AND `downloads` > '0' AND `active`='1' AND `uniqueid` IS NULL LIMIT 1", $downloadid), ARRAY_A);
        }
        if (get_option('wpsc_ip_lock_downloads') == 1 && $_SERVER['REMOTE_ADDR'] != null) {
            $ip_number = $_SERVER['REMOTE_ADDR'];
            if ($download_data['ip_number'] == '') {
                // if the IP number is not set, set it
                $wpdb->update(WPSC_TABLE_DOWNLOAD_STATUS, array('ip_number' => $ip_number), array('id' => $download_data['id']));
            } else {
                if ($ip_number != $download_data['ip_number']) {
                    // if the IP number is set but does not match, fail here.
                    exit(_e('This download is no longer valid, Please contact the site administrator for more information.', 'wpsc'));
                }
            }
        }
        $file_id = $download_data['fileid'];
        $file_data = wpsc_get_downloadable_file($file_id);
        if ($file_data == null) {
            exit(_e('This download is no longer valid, Please contact the site administrator for more information.', 'wpsc'));
        }
        if ($download_data != null) {
            if ((int) $download_data['downloads'] >= 1) {
                $download_count = (int) $download_data['downloads'] - 1;
            } else {
                $download_count = 0;
            }
            $wpdb->update(WPSC_TABLE_DOWNLOAD_STATUS, array('downloads' => $download_count), array('id' => $download_data['id']));
            $cart_contents = $wpdb->get_results($wpdb->prepare("SELECT `" . WPSC_TABLE_CART_CONTENTS . "`.*, {$wpdb->posts}.`guid` FROM `" . WPSC_TABLE_CART_CONTENTS . "` LEFT JOIN {$wpdb->posts} ON `" . WPSC_TABLE_CART_CONTENTS . "`.`prodid`= {$wpdb->posts}.`post_parent` WHERE {$wpdb->posts}.`post_type` = 'wpsc-product-file' AND `purchaseid` = %d", $download_data['purchid']), ARRAY_A);
            $dl = 0;
            foreach ($cart_contents as $cart_content) {
                if ($cart_content['guid'] == 1) {
                    $dl++;
                }
            }
            if (count($cart_contents) == $dl) {
                wpsc_update_purchase_log_status($download_data['purchid'], 4);
            }
            _wpsc_force_download_file($file_id);
        } else {
            exit(_e('This download is no longer valid, Please contact the site administrator for more information.', 'wpsc'));
        }
    }
}

function gourlwpecommerce_gourlcallback($user_id, $order_id, $payment_details, $box_status)
{
    global $wpdb, $wpsc_merchant;
    if (!in_array($box_status, array("cryptobox_newrecord", "cryptobox_updated"))) {
        return false;
    }
    if (strpos($order_id, "order") === 0) {
        $order_id = intval(substr($order_id, 5));
    } else {
        return false;
    }
    if (!$user_id || $payment_details["status"] != "payment_received") {
        return false;
    }
    $sql = 'SELECT * FROM `' . WPSC_TABLE_PURCHASE_LOGS . '` WHERE id = ' . $order_id . ' LIMIT 1';
    $arr = $wpdb->get_row($sql, ARRAY_A);
    if (!$arr) {
        return false;
    }
    // Initialize
    $statuses = array(2 => 'Order Received', 3 => 'Accepted Payment', 4 => 'Job Dispatched', 5 => 'Closed Order');
    $ostatus = get_option(GOURLWPSC . 'ostatus');
    if (!in_array($ostatus, array_keys($statuses))) {
        $ostatus = 3;
    }
    // Accepted Payment
    $ostatus2 = get_option(GOURLWPSC . 'ostatus2');
    if (!in_array($ostatus2, array_keys($statuses))) {
        $ostatus2 = 3;
    }
    // Accepted Payment
    $coinName = ucfirst($payment_details["coinname"]);
    $amount = $payment_details["amount"] . " " . $payment_details["coinlabel"] . "  ( \$" . $payment_details["amountusd"] . " )";
    $payID = $payment_details["paymentID"];
    $trID = $payment_details["tx"];
    $status = $payment_details["is_confirmed"] ? $ostatus2 : $ostatus;
    $confirmed = $payment_details["is_confirmed"] ? __('Yes', GOURLWPSC) : __('No', GOURLWPSC);
    // New Payment Received
    if ($box_status == "cryptobox_newrecord") {
        wpsc_gourl_gateway::add_order_note($order_id, sprintf(__('<b>%s</b> payment received<br>%s<br>Payment <a href="%s">id %s</a>. Awaiting network confirmation...' . ($arr["processed"] != $status ? '<br>Order status changed to: %s' : ''), GOURLWPSC), $coinName, $amount, GOURL_ADMIN . GOURL . "payments&s=payment_" . $payID, $payID, $statuses[$status]));
    }
    // Existing Payment confirmed (6+ confirmations)
    if ($payment_details["is_confirmed"]) {
        wpsc_gourl_gateway::add_order_note($order_id, sprintf(__('%s Payment id <a href="%s">%s</a> Confirmed' . ($arr["processed"] != $status ? '<br>Order status changed to: %s' : ''), GOURLWPSC), $coinName, GOURL_ADMIN . GOURL . "payments&s=payment_" . $payID, $payID, $statuses[$status]));
    }
    // Update Order Status
    wpsc_update_purchase_log_status($order_id, $status);
    wpsc_update_purchase_log_details($order_id, array('transactid' => $trID));
    // WP eCommerce not use new updated order status, therefore need to refresh page manually
    if (in_array($status, array(3, 4, 5)) && !in_array($arr["processed"], array(3, 4, 5)) && !stripos($_SERVER["REQUEST_URI"], "cryptobox.callback.php")) {
        header('Location: ' . $_SERVER["REQUEST_URI"]);
        echo "<script>window.location.href = '" . $_SERVER["REQUEST_URI"] . "';</script>";
        die;
    }
    return true;
}