cashfree / includes / response.php

response.php in Cashfree for WooCommerce 4.2.2, at includes/response.php

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1	<?php
2
3	require_once __DIR__.'/../woocommerce-cashfree.php';
4
5	class Cashfree_Response
6	{
7	public function __construct()
8	{
9	$this->cashfree = new WC_Gateway_cashfree(false);
10
11	$this->msg['message'] = "";
12
13	$this->msg['class'] = "";
14	}
15
16	function process($postArgs)
17	{
18	global $woocommerce, $wpdb;
19
20	$orderId = sanitize_text_field($postArgs["orderId"]);
21	list($orderId) = explode('_', $orderId);
22	$order = new WC_Order($orderId);
23
24	if ($order->has_status( array( 'processing', 'completed' ) ) )
25	{
26	$this->redirectUser($order);
27	}
28
29	$success = false;
30
31	if ($order && !empty($postArgs['referenceId']))
32	{
33
34	if ($postArgs["txStatus"] == 'SUCCESS')
35	{
36	if($postArgs["orderAmount"] == $order->get_total())
37	{
38	$success = $this->verifySignature($postArgs);
39	}
40	else
41	{
42	$postArgs["txMsg"] = "Order amount is mismatched";
43	}
44	}
45
46	if($success == true){
47
48	$this->updateOrder($order, $success, $postArgs["txMsg"], $postArgs['referenceId']);
49
50	$this->redirectUser($order);
51	}
52	else
53	{
54	$this->updateOrder($order, $success, $postArgs['txMsg'], null);
55
56	wp_redirect(wc_get_checkout_url());
57	exit;
58	}
59
60	}
61
62	else
63	{
64	$this->updateOrder($order, $success, $postArgs['txMsg'], null);
65
66	wp_redirect(wc_get_checkout_url());
67	exit;
68	}
69
70	}
71
72	protected function redirectUser($order)
73	{
74	$redirectUrl = $this->cashfree->get_return_url($order);
75
76	wp_redirect($redirectUrl);
77	exit;
78	}
79
80	protected function verifySignature($postArgs)
81	{
82	$cashfree_response = array();
83	$cashfree_response["orderId"] = $postArgs['orderId'];
84	$cashfree_response["orderAmount"] = sanitize_text_field($postArgs["orderAmount"]);
85	$cashfree_response["txStatus"] = sanitize_text_field($postArgs["txStatus"]);
86	$cashfree_response["referenceId"] = sanitize_text_field($postArgs["referenceId"]);
87	$cashfree_response["txTime"] = sanitize_text_field($postArgs["txTime"]);
88	$cashfree_response["txMsg"] = sanitize_text_field($postArgs["txMsg"]);
89	$cashfree_response["paymentMode"] = sanitize_text_field($postArgs["paymentMode"]);
90	$cashfree_response["signature"] = sanitize_text_field($postArgs["signature"]);
91
92	$secret_key = $this->cashfree->settings['secret_key'];
93	$data = "{$cashfree_response['orderId']}{$cashfree_response['orderAmount']}{$cashfree_response['referenceId']}{$cashfree_response['txStatus']}{$cashfree_response['paymentMode']}{$cashfree_response['txMsg']}{$cashfree_response['txTime']}";
94	$hash_hmac = hash_hmac('sha256', $data, $secret_key, true) ;
95	$computedSignature = base64_encode($hash_hmac);
96	if ($cashfree_response["signature"] != $computedSignature)
97	{
98	return false;
99	}
100	return true;
101	}
102
103	/**
104	* Modifies existing order and handles success case
105	*
106	* @param $success, & $order
107	*/
108	public function updateOrder(& $order, $success, $txMsg, $referenceId = null)
109	{
110	global $woocommerce;
111
112	if ($success === true)
113	{
114	$order->payment_complete();
115	$order->set_transaction_id($referenceId);
116	$order->add_order_note('Cashfree payment successful. Reference id ' . $referenceId);
117	$order->add_order_note($txMsg);
118	$this->msg['message'] = "Thank you for shopping with us. Your payment has been confirmed. Cashfree reference id is: <b>".$referenceId."</b>.";
119	$this->msg['class'] = 'success';
120
121	if (isset($woocommerce->cart) === true)
122	{
123	$woocommerce->cart->empty_cart();
124	}
125	}
126	else
127	{
128	$order->update_status( 'failed', __( $txMsg, 'woocommerce' ));
129	$this->msg['class'] = 'error';
130	$this->msg['message'] = $txMsg. ". Please try again.";
131	}
132
133	$this->cashfree->add_notice($this->msg['message'], $this->msg['class']);
134
135	}
136	}