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<?php |
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namespace Omnipay\CyberSource\Message; |
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use Omnipay\Common\Message\AbstractResponse; |
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use Omnipay\Common\Message\RequestInterface; |
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use Omnipay\Common\Exception\InvalidResponseException; |
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/** |
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* CyberSource Complete Purchase Response |
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*/ |
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class CompletePurchaseResponse extends AbstractResponse |
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{ |
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/** |
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* Constructor |
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* |
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* @param RequestInterface $request the initiating request. |
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* @param mixed $data |
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* |
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* @throws InvalidResponseException If merchant data or order number is missing, or signature does not match |
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*/ |
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public function __construct(RequestInterface $request, $data) |
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{ |
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parent::__construct($request, $data); |
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foreach (array('decision', 'signed_field_names', 'signature') as $key) { |
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if (empty($data[$key])) { |
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throw new InvalidResponseException('Invalid response from payment gateway (no data)'); |
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} |
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} |
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$security = new Security(); |
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$returnSignature = $security->createSignature( |
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$data, |
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explode(',', $data['signed_field_names']), |
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$this->request->getSecretKey() |
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); |
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if ($returnSignature != $data['signature']) { |
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throw new InvalidResponseException('Invalid response from payment gateway (signature mismatch)'); |
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} |
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} |
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/** |
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* Is the response successful? |
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* |
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* Possible values: 'ACCEPT', 'DECLINE', 'REVIEW', 'ERROR', 'CANCEL' |
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* |
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* @return boolean |
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*/ |
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public function isSuccessful() |
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{ |
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return $this->getKey('decision') === 'ACCEPT'; |
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} |
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/** |
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* Get the transaction identifier if available. |
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* |
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* @return null|string |
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*/ |
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public function getTransactionReference() |
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{ |
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return $this->getKey('transaction_id'); |
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} |
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/** |
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* Get the authorisation code if available. |
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* |
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* @return null|string |
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*/ |
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public function getAuthCode() |
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{ |
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return $this->getKey('auth_code'); |
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} |
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/** |
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* Get the reason code if available. |
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* |
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* @return null|string |
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*/ |
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public function getReasonCode() |
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{ |
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return $this->getKey('reason_code'); |
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} |
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/** |
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* Get the merchant response message if available. |
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* |
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* @return null|string |
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*/ |
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public function getMessage() |
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{ |
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return $this->getKey('message'); |
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} |
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/** |
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* Get the card number if available. |
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* |
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* @return null|string |
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*/ |
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public function getCardNumber() |
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{ |
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return $this->getKey('req_card_number'); |
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} |
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/** |
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* Get the card type if available. |
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* |
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* @return null|string 3-digit number that maps to CyberSource-specific list of card types |
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*/ |
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public function getCardType() |
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{ |
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return $this->getKey('req_card_type'); |
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} |
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/** |
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* Get the card expiry if available. |
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* |
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* @return null|string Format 'mm-yyyy' |
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*/ |
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public function getCardExpiry() |
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{ |
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return $this->getKey('req_card_expiry_date'); |
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} |
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/** |
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* Helper method to get a specific response parameter if available. |
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* |
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* @param string $key The key to look up |
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* |
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* @return null|mixed |
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*/ |
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7 |
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protected function getKey($key) |
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{ |
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return isset($this->data[$key]) ? $this->data[$key] : null; |
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} |
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} |
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Let’s take a look at an example:
In the above example, the authenticate() method works fine as long as you just pass instances of MyUser. However, if you now also want to pass a different implementation of User which does not have a getDisplayName() method, the code will break.
Available Fixes
Change the type-hint for the parameter:
Add an additional type-check:
Add the method to the interface: