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Update to store exchange rate in MySQL database 

Update to store exchange rate data server-side in the MySQL database used by wordpress. This replaces the old model of storing this data client-side in a cookie
This commit is contained in:
cryptochangements34 2017-08-10 11:46:34 -05:00 committed by GitHub
parent 5e0015897e
commit fd1a053a78
1 changed files with 38 additions and 36 deletions
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74
monero/include/monero_payments.php
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@ -1,8 +1,8 @@
<?php
/* Main Gateway of Monero using a daemon online */
class Monero_Gateway extends WC_Payment_Gateway
{
private $reloadTime = 30000;
private $monero_daemon;
function __construct()
{
@ -32,12 +32,10 @@ class Monero_Gateway extends WC_Payment_Gateway
foreach ($this->settings as $setting_key => $value) {
$this->$setting_key = $value;
}
add_action('admin_notices', array($this,'do_ssl_check'));
add_action('admin_notices', array($this,'validate_fields'));
add_action('woocommerce_thankyou_' . $this->id, array($this,'instruction'));
if (is_admin()) {
/* Save Settings */
add_action('woocommerce_update_options_payment_gateways_' . $this->id, array($this,'process_admin_options'
@ -102,14 +100,14 @@ class Monero_Gateway extends WC_Payment_Gateway
'default' => '18080',
),
'username' => array(
'title' => __('username', 'monero_gateway'),
'title' => __('Daemon username', 'monero_gateway'),
'desc_tip' => __('This is the username that you used with your monero wallet-rpc', 'monero_gateway'),
'type' => __('text'),
'default' => __('username','monero_gateway'),
),
'password' => array(
'title' => __('password', 'monero_gateway'),
'title' => __('Daemon password', 'monero_gateway'),
'desc_tip' => __('This is the password that you used with your monero wallet-rpc', 'monero_gateway'),
'description' => __('you can leave these fields empty if you did not set', 'monero_gateway'),
'type' => __('text'),
@ -131,7 +129,7 @@ class Monero_Gateway extends WC_Payment_Gateway
{
$xmr_price = file_get_contents('https://min-api.cryptocompare.com/data/price?fsym=XMR&tsyms=BTC,USD,EUR,CAD,INR,GBP&extraParams=monero_woocommerce');
$price = json_decode($xmr_price, TRUE);
if(isset($price)){
if(!isset($price)){
$this->log->add('Monero_Gateway', '[ERROR] Unable to get the price of Monero');
}
if ($currency == 'USD') {
@ -151,37 +149,38 @@ class Monero_Gateway extends WC_Payment_Gateway
}
}
public function changeto($amount, $currency)
public function changeto($amount, $currency, $payment_id)
{
if(!isset($_COOKIE['rate']))
global $wpdb;
// This will create a table named whatever the payment id is inside the database "WordPress"
$create_table = "CREATE TABLE IF NOT EXISTS $payment_id (
rate INT
)";
$wpdb->query($create_table);
$rows_num = $wpdb->get_results("SELECT count(*) as count FROM $payment_id");
if($rows_num[0]->count > 0) // Checks if the row has already been created or not
{
$xmr_live_price = $this->retriveprice($currency);
setcookie('rate', $xmr_live_price, time()+2700);
$new_amount = $amount / $xmr_live_price;
$stored_rate = $wpdb->get_results("SELECT rate FROM $payment_id");
$stored_rate_transformed = $stored_rate[0]->rate / 100; //this will turn the stored rate back into a decimaled number
$new_amount = $amount / $stored_rate_transformed;
$rounded_amount = round($new_amount, 12); //the moneo wallet can't handle decimals smaller than 0.000000000001
return $rounded_amount;
}
else
else // If the row has not been created then the live exchange rate will be grabbed and stored
{
$rate_cookie = $_COOKIE['rate'];
$xmr_live_price = $this->retriveprice($currency);
if($xmr_live_price - $rate_cookie >= 1 || $xmr_live_price - $rate_cookie >= -1) //reset rate if there is a difference of 1 EURO/DOLLAR/ETC between the live rate and the cookie rate
{ //this is so that the merchant does not lose money from exchange market forces or cookie tampering
$new_amount = $amount / $rate_cookie;
$rounded_amount = round($new_amount, 12);
return $rounded_amount;
}
else
{
setcookie('rate', $xmr_live_price, time()+2700);
$new_amount = $amount / $xmr_live_price;
$rounded_amount = round($new_amount, 12);
return $rounded_amount;
}
}
$live_for_storing = $xmr_live_price * 100; //This will remove the decimal so that it can easily be stored as an integer
$new_amount = $amount / $xmr_live_price;
$rounded_amount = round($new_amount, 12);
$wpdb->query("INSERT INTO $payment_id (rate)
VALUES ($live_for_storing)");
}
return $rounded_amount;
}
// Submit payment and handle response
public function process_payment($order_id)
{
@ -233,15 +232,14 @@ class Monero_Gateway extends WC_Payment_Gateway
$payment_id = $_COOKIE['payment_id'];
return $payment_id;
}
public function instruction($order_id)
{
$order = wc_get_order($order_id);
$amount = floatval(preg_replace('#[^\d.]#', '', $order->order_total));
$currency = $order->currency;
$amount_xmr2 = $this->changeto($amount, $currency);
$address = $this->address;
$payment_id = $this->set_paymentid_cookie();
$currency = $order->currency;
$amount_xmr2 = $this->changeto($amount, $currency, $payment_id);
$address = $this->address;
$uri = "monero:$address?amount=$amount?payment_id=$payment_id";
$array_integrated_address = $this->monero_daemon->make_integrated_address($payment_id);
if(!isset($array_integrated_address)){
@ -301,7 +299,7 @@ class Monero_Gateway extends WC_Payment_Gateway
</div>
</div>
<script type='text/javascript'>
setTimeout(function () { location.reload(true); }, 30000);
setTimeout(function () { location.reload(true); }, $this->reloadTime);
</script>";
}
@ -350,7 +348,11 @@ class Monero_Gateway extends WC_Payment_Gateway
$this->log->add('Monero_gateway','[SUCCESS] Payment has been recorded. Congrats!');
$paid = true;
$order = wc_get_order($order_id);
$order->update_status('completed', __('Payment has been received', 'monero_gateway'));
$order->update_status('completed', __('Payment has been received', 'monero_gateway'));
$wpdb->query("DROP TABLE $payment_id"); // Drop the table from database after payment has been confirmed as it is no longer needed
$this->reloadTime = 3000000000000; // Greatly increase the reload time as it is no longer needed
}
}
else
@ -359,4 +361,4 @@ class Monero_Gateway extends WC_Payment_Gateway
}
return $message;
}
}
}