Merge pull request #129 from thephpleague/pr128

PR128 additions

Author: judgej

.travis.yml

@@ -5,6 +5,7 @@ php:
   - 7.0
   - 7.1
   - 7.2
+  - 7.3
 
 # This triggers builds to run on the new TravisCI infrastructure.
 # See: http://docs.travis-ci.com/user/workers/container-based-infrastructure/

README.md

@@ -111,15 +111,16 @@ $data = $response->getData();
 
 $data['paymentProfile']['customerProfileId'];
 $data['paymentProfile']['customerPaymentProfileId'];
-//Now you can use these 2 fields to reference this customer and this payment profile for later use with 
-//the rest of the CIM driver features as usual.
+
+// Now you can use these 2 fields to reference this customer and this payment profile for later use with 
+// the rest of the CIM driver features as usual.
 ```
 
 ## DPM and SIM Signatures
 
 DPM and SIM used to sign their requests with the `transactionKey` using the mdh HMAC algorithm.
 From early 2019, this algorithm is being removed completely.
-Instead, the SHA-512 HMAC algorithm is used to sign the DPM and SIM requsts,
+Instead, the SHA-512 HMAC algorithm is used to sign the DPM and SIM requests,
 and to validate the received  notifications.
 
 To start using the SHA-512 signing, set your `signatureKey` in the gateway:

src/Message/DPMAuthorizeRequest.php

@@ -6,6 +6,7 @@
  * Authorize.Net DPM Authorize Request.
  * Takes the data that will be used to create the direct-post form.
  */
+
 class DPMAuthorizeRequest extends SIMAuthorizeRequest
 {
     protected $action = 'AUTH_ONLY';

src/Message/DPMCompleteRequest.php

@@ -5,7 +5,7 @@
 /**
  * Authorize.Net DPM Complete Authorize Request
  */
-class DPMCompleteRequest extends SIMCompleteAuthorizeRequest
+class DPMCompleteRequest extends SIMCompleteRequest
 {
     public function sendData($data)
     {

src/Message/DPMCompleteResponse.php

@@ -5,6 +5,6 @@
 /**
  * SIM and DPM both have identical needs when handling the notify request.
  */
-class DPMCompleteResponse extends SIMCompleteAuthorizeResponse
+class DPMCompleteResponse extends SIMCompleteResponse
 {
 }

src/Message/SIMAbstractRequest.php

@@ -2,11 +2,12 @@
 
 namespace Omnipay\AuthorizeNet\Message;
 
-use Omnipay\Common\Message\AbstractRequest;
-
 /**
  * Authorize.Net SIM Abstract Request
  */
+
+use Omnipay\Common\Message\AbstractRequest;
+
 abstract class SIMAbstractRequest extends AbstractRequest
 {
     /**

src/Message/SIMAuthorizeRequest.php

@@ -54,7 +54,8 @@ public function getData()
         }
 
         $data = array_merge($data, $this->getBillingData());
-        $data['x_fp_hash'] = $this->getHash($data);
+
+        $data['x_fp_hash'] = $this->createHash($data);
 
         return $data;
     }
@@ -64,10 +65,11 @@ public function getData()
      * modified en-route.
      * It uses the TransactionKey, which is a shared secret between the merchant
      * and Authorize.Net The sequence and timestamp provide additional salt.
+     *
      * @param $data
      * @return string
      */
-    public function getHash($data)
+    public function createHash($data)
     {
         $fingerprint = implode(
             '^',
@@ -77,7 +79,7 @@ public function getHash($data)
                 $data['x_fp_timestamp'],
                 $data['x_amount']
             )
-        ).'^';
+        ) . '^';
 
         // If x_currency_code is specified, then it must follow the final trailing carat.
 

src/Message/SIMAuthorizeResponse.php

@@ -44,4 +44,11 @@ public function getRedirectData()
     {
         return $this->getData();
     }
+
+    public function getTransactionId()
+    {
+        return isset($this->data[SIMAbstractRequest::TRANSACTION_ID_PARAM])
+            ? $this->data[SIMAbstractRequest::TRANSACTION_ID_PARAM]
+            : null;
+    }
 }

src/Message/SIMCompleteAuthorizeRequest.php

@@ -0,0 +1,158 @@
+<?php
+
+namespace Omnipay\AuthorizeNet\Message;
+
+use Omnipay\Common\Exception\InvalidRequestException;
+
+/**
+ * Authorize.Net SIM Complete Authorize Request
+ */
+class SIMCompleteRequest extends SIMAbstractRequest
+{
+    /**
+     * Get the transaction ID passed in through the custom field.
+     * This is used to look up the transaction in storage.
+     */
+    public function getTransactionId()
+    {
+        return $this->httpRequest->request->get(static::TRANSACTION_ID_PARAM);
+    }
+
+    public function getData()
+    {
+        // The hash sent in the callback from the Authorize.Net gateway.
+        $hashPosted = $this->getPostedHash();
+
+        // Calculate the hash locally, using the shared "hash secret" and login ID.
+        $hashCalculated = $this->getHash();
+
+        if ($hashPosted !== $hashCalculated) {
+            // If the hash is incorrect, then we can't trust the source nor anything sent.
+            // Throwing exceptions here is probably a bad idea. We are trying to get the data,
+            // and if it is invalid, then we need to be able to log that data for analysis.
+            // Except we can't, baceuse the exception means we can't get to the data.
+            // For now, this is consistent with other OmniPay gateway drivers.
+
+            throw new InvalidRequestException('Incorrect hash');
+        }
+
+        // The hashes have passed, but the amount should also be validated against the
+        // amount in the stored and retrieved transaction. If the application has the
+        // ability to retrieve the transaction (using the transaction_id sent as a custom
+        // form field, or perhaps in an otherwise unused field such as x_invoice_id.
+
+        $amount = $this->getAmount();
+        $postedAmount = $this->httpRequest->request->get('x_amount');
+
+        if (isset($amount) && $amount != $postedAmount) {
+            // The amounts don't match. Someone may have been playing with the
+            // transaction references.
+
+            throw new InvalidRequestException('Incorrect amount');
+        }
+
+        return $this->httpRequest->request->all();
+    }
+
+    /**
+     * @return string
+     */
+    public function getHash()
+    {
+        if ($this->getSignatureKey()) {
+            return $this->getSha512Hash();
+        } else {
+            return $this->getMd5Hash();
+        }
+    }
+
+    /**
+     * Generate md5 hash.
+     *
+     * @param $transaction_reference
+     * @param $amount
+     * @return string
+     */
+    public function getMd5Hash()
+    {
+        $transactionReference = $this->httpRequest->request->get('x_trans_id');
+        $amount = $this->httpRequest->request->get('x_amount');
+
+        $key = array(
+            $this->getHashSecret(),
+            $this->getApiLoginId(),
+            $transactionReference,
+            $amount,
+        );
+
+        return md5(implode('', $key));
+    }
+
+    /**
+     * Generate sha512 hash.
+     * Required fields are provided in Table 18 in
+     * https://www.authorize.net/content/dam/authorize/documents/SIM_guide.pdf#page=73
+     *
+     * @return string hash generated from server request transformed to upper case
+     */
+    public function getSha512Hash()
+    {
+        $signatureKey = $this->getSignatureKey();
+        $request = $this->httpRequest->request;
+
+        $hashData = '^' . implode('^', [
+            $request->get('x_trans_id'),
+            $request->get('x_test_request'),
+            $request->get('x_response_code'),
+            $request->get('x_auth_code'),
+            $request->get('x_cvv2_resp_code'),
+            $request->get('x_cavv_response'),
+            $request->get('x_avs_code'),
+            $request->get('x_method'),
+            $request->get('x_account_number'),
+            $request->get('x_amount'),
+            $request->get('x_company'),
+            $request->get('x_first_name'),
+            $request->get('x_last_name'),
+            $request->get('x_address'),
+            $request->get('x_city'),
+            $request->get('x_state'),
+            $request->get('x_zip'),
+            $request->get('x_country'),
+            $request->get('x_phone'),
+            $request->get('x_fax'),
+            $request->get('x_email'),
+            $request->get('x_ship_to_company'),
+            $request->get('x_ship_to_first_name'),
+            $request->get('x_ship_to_last_name'),
+            $request->get('x_ship_to_address'),
+            $request->get('x_ship_to_city'),
+            $request->get('x_ship_to_state'),
+            $request->get('x_ship_to_zip'),
+            $request->get('x_ship_to_country'),
+            $request->get('x_invoice_num'),
+        ]) . '^';
+        $hash = hash_hmac('sha512', $hashData, hex2bin($signatureKey));
+
+        return strtoupper($hash);
+    }
+
+    /**
+     * Get posted hash from the callback from the Authorize.Net gateway.
+     *
+     * @return string|null
+     */
+    public function getPostedHash()
+    {
+        if ($signatureKey = $this->getSignatureKey()) {
+            return strtoupper($this->httpRequest->request->get('x_SHA2_Hash'));
+        }
+
+        return strtolower($this->httpRequest->request->get('x_MD5_Hash'));
+    }
+
+    public function sendData($data)
+    {
+        return $this->response = new SIMCompleteResponse($this, $data);
+    }
+}