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<?php |
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|
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namespace Give\PaymentGateways\Gateways\PayPalStandard\Webhooks; |
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|
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use Give\Log\Log; |
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|
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/** |
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* This class use to validate PayPal Standard ipn. |
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* Validate the IPN: https://developer.paypal.com/docs/api-basics/notifications/ipn/IPNImplementation/ |
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* |
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* @since 2.19.0 |
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*/ |
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class WebhookValidator |
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{ |
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/** |
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* @since 2.19.0 |
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* @since 2.19.3 Update log message. |
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* @since 4.18.0.1 Always validate the IPN with PayPal and verify its SSL certificate. |
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* |
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* @param array $eventData PayPal ipn body data. |
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* |
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* @return bool |
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*/ |
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public function verifyEventSignature(array $eventData) |
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{ |
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$eventData = array_merge( [ 'cmd' => '_notify-validate' ], $eventData ); |
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|
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$requestArgs = [ |
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'method' => 'POST', |
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'timeout' => 45, |
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'redirection' => 5, |
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'httpversion' => '1.1', |
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'blocking' => true, |
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'headers' => [ |
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'host' => give_is_test_mode() ? 'www.sandbox.paypal.com' : 'www.paypal.com', |
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'connection' => 'close', |
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'content-type' => 'application/x-www-form-urlencoded', |
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'post' => '/cgi-bin/webscr HTTP/1.1', |
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], |
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'body' => $eventData, |
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]; |
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|
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$apiResponse = wp_remote_post(give_get_paypal_redirect(), $requestArgs); |
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|
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if (is_wp_error($apiResponse)) { |
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Log::error( |
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'PayPal Standard IPN Error', |
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['IPN Data' => $apiResponse] |
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); |
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|
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return false; |
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} |
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|
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if ('VERIFIED' !== $apiResponse['body']) { |
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Log::warning( |
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'PayPal Standard IPN Error', |
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[ |
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'Message' => 'This is not a verified IPN.', |
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'IPN Data' => $apiResponse |
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] |
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); |
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|
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return false; |
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} |
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|
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return true; |
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} |
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} |
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|
