アプリ内購入での購入と領収書の検証を処理するクラスを作成しました。少し前に、SKPaymentTransaction で transactionReceipt プロパティを使用していましたが、コードをかなり更新し、[NSBundle mainBundle] で appStoreReceiptURL を使用するようになりました。
基本的に、領収書は Apple のサーバーに適切な方法で送信されているようですが、ステータス コード 21002 が引き続き表示されます。アプリ内購入の領収書に関して、このステータスが何を意味するのかわかりません。
レシートを検証するローカル メソッドは次のとおりです。
/**
* Validates the receipt.
*
* @param transaction The transaction triggering the validation of the receipt.
*/
- (void)validateReceiptForTransaction:(SKPaymentTransaction *)transaction
{
// get the product for the transaction
IAPProduct *product = self.internalProducts[transaction.payment.productIdentifier];
// get the receipt as a base64 encoded string
NSData *receiptData = [[NSData alloc] initWithContentsOfURL:[NSBundle mainBundle].appStoreReceiptURL];
NSString *receipt = [receiptData base64EncodedStringWithOptions:kNilOptions];
NSLog(@"Receipt: %@", receipt);
// determine the url for the receipt verification server
NSURL *verificationURL = [[NSURL alloc] initWithString:IAPHelperServerBaseURL];
verificationURL = [verificationURL URLByAppendingPathComponent:IAPHelperServerReceiptVerificationComponent];
NSMutableURLRequest *urlRequest = [[NSMutableURLRequest alloc] initWithURL:verificationURL];
urlRequest.HTTPMethod = @"POST";
NSDictionary *httpBody = @{@"receipt" : receipt,
@"sandbox" : @(1)};
urlRequest.HTTPBody = [NSKeyedArchiver archivedDataWithRootObject:httpBody];
[NSURLConnection sendAsynchronousRequest:urlRequest
queue:[[NSOperationQueue alloc] init]
completionHandler:^(NSURLResponse *response, NSData *data, NSError *connectionError)
{
// create a block to be called whenever a filue is hit
void (^failureBlock)(NSString *failureMessage) = ^void(NSString *failureMessage)
{
[[NSOperationQueue mainQueue] addOperationWithBlock:
^{
// log the failure message
NSLog(@"%@", failureMessage);
// if we have aready tried refreshing the receipt then we close the transaction to avoid loops
if (self.transactionToValidate)
product.purchaseInProgress = NO,
[[SKPaymentQueue defaultQueue] finishTransaction:transaction],
[self notifyStatus:@"Validation failed." forProduct:product],
self.transactionToValidate = nil;
// if we haven't tried yet, we'll refresh the receipt and then attempt a second validation
else
self.transactionToValidate = transaction,
[self refreshReceipt];
}];
};
// check for an error whilst contacting the server
if (connectionError)
{
failureBlock([[NSString alloc] initWithFormat:@"Failure connecting to server: %@", connectionError]);
return;
}
// cast the response appropriately
NSHTTPURLResponse *httpResponse = (NSHTTPURLResponse *)response;
// parse the JSON
NSError *jsonError;
NSDictionary *json = [NSJSONSerialization JSONObjectWithData:data options:kNilOptions error:&jsonError];
// if the data did not parse correctly we fail out
if (!json)
{
NSString *responseString = [NSHTTPURLResponse localizedStringForStatusCode:httpResponse.statusCode];
NSString *failureMessage = [[NSString alloc] initWithFormat:@"Failure parsing JSON: %@\nServer Response: %@ (%@)",
data, responseString, @(httpResponse.statusCode)];
failureBlock(failureMessage);
return;
}
// if the JSON was successfully parsed pull out status code to check for verification success
NSInteger statusCode = [json[@"status"] integerValue];
NSString *errorDescription = json[@"error"];
// if the verification did not succeed we fail out
if (statusCode != 0)
{
NSString *failureMessage = [[NSString alloc] initWithFormat:@"Failure verifying receipt: %@", errorDescription];
failureBlock(failureMessage);
}
// otherwise we have succeded, yay
else
NSLog(@"Successfully verified receipt."),
[self provideContentForCompletedTransaction:transaction productIdentifier:transaction.payment.productIdentifier];
}];
}
サーバー上の重要な PHP 関数はこれを行います。
/**
* Validates a given receipt and returns the result.
*
* @param receipt Base64-encoded receipt.
* @param sandbox Boolean indicating whether to use sandbox servers or production servers.
*
* @return Whether the reciept is valid or not.
*/
function validateReceipt($receipt, $sandbox)
{
// determine url for store based on if this is production or development
if ($sandbox)
$store = 'https://sandbox.itunes.apple.com/verifyReceipt';
else
$store = 'https://buy.itunes.apple.com/verifyReceipt';
// set up json-encoded dictionary with receipt data for apple receipt validator
$postData = json_encode(array('receipt-data' => $receipt));
// use curl library to perform web request
$curlHandle = curl_init($store);
// we want results returned as string, the request to be a post, and the json data to be in the post fields
curl_setopt($curlHandle, CURLOPT_RETURNTRANSFER, true);
curl_setopt($curlHandle, CURLOPT_POST, true);
curl_setopt($curlHandle, CURLOPT_POSTFIELDS, $postData);
$encodedResponse = curl_exec($curlHandle);
curl_close($curlHandle);
// if we received no response we return the error
if (!$encodedResponse)
return result(ERROR_VERIFICATION_NO_RESPONSE, 'Payment could not be verified - no response data. This was sandbox? ' . ($sandbox ? 'YES' : 'NO'));
// decode json response and get the data
$response = json_decode($encodedResponse);
$status = $response->{'status'};
$decodedReceipt = $response->{'receipt'};
// if status code is not 0 there was an error validation receipt
if ($status)
return result(ERROR_VERIFICATION_FAILED, 'Payment could not be verified (status = ' . $status . ').');
// log the returned receipt from validator
logToFile(print_r($decodedReceipt, true));
// pull out product id, transaction id and original transaction id from infro trurned by apple
$productID = $decodedReceipt->{'product_id'};
$transactionID = $decodedReceipt->{'transaction_id'};
$originalTransactionID = $decodedReceipt->{'original_transaction_id'};
// make sure product id has expected prefix or we bail
if (!beginsWith($productID, PRODUCT_ID_PREFIX))
return result(ERROR_INVALID_PRODUCT_ID, 'Invalid Product Identifier');
// get any existing record of this transaction id from our database
$db = Database::get();
$statement = $db->prepare('SELECT * FROM transactions WHERE transaction_id = ?');
$statement->bindParam(1, $transactionID, PDO::PARAM_STR, 32);
$statement->execute();
// if we have handled this transaction before return a failure
if ($statement->rowCount())
{
logToFile("Already processed $transactionID.");
return result(ERROR_TRANSACTION_ALREADY_PROCESSED, 'Already processed this transaction.');
}
// otherwise we insert this new transaction into the database
else
{
logToFile("Adding $transactionID.");
$statement = $db->prepare('INSERT INTO transactions(transaction_id, product_id, original_transaction_id) VALUES (?, ?, ?)');
$statement->bindParam(1, $transactionID, PDO::PARAM_STR, 32);
$statement->bindParam(2, $productID, PDO::PARAM_STR, 32);
$statement->bindParam(3, $originalTransactionID, PDO::PARAM_STR, 32);
$statement->execute();
}
return result(SUCCESS);
}
実際に実行される PHP スクリプトは次のとおりです。
$receipt = $_POST['receipt'];
$sandbox = $_POST['sandbox'];
$returnValue = validateReceipt($receipt, $sandbox);
header('content-type: application/json; charset=utf-8');
echo json_encode($returnValue);