IAP实际验证收据(Swift)

Question

我一直在尝试在我的spritekit游戏中实现收据验证.我一直在关注各种教程,基本上结束了这段代码

enum RequestURL: String {
   case production = "https://buy.itunes.apple.com/verifyReceipt"
   case sandbox = "https://sandbox.itunes.apple.com/verifyReceipt"
   case myServer = "my server address"
}

enum ReceiptStatusCode: Int {

// Not decodable status
case unknown = -2

// No status returned
case none = -1

// valid status
case valid = 0

// The App Store could not read the JSON object you provided.
case JSONNotReadable = 21000

// The data in the receipt-data property was malformed or missing.
case malformedOrMissingData = 21002

// The receipt could not be authenticated.
case receiptCouldNotBeAuthenticated = 21003

// The shared secret you provided does not match the shared secret on file for your account.
// Only returned for iOS 6 style transaction receipts for auto-renewable subscriptions.
case sharedSecretNotMatching = 21004

// The receipt server is currently not available.
case receiptServerUnavailable = 21005

// This receipt is valid but the subscription has expired. When this status code is returned to your server, the receipt data is also decoded and returned as part of the response.
// Only returned for iOS 6 style transaction receipts for auto-renewable subscriptions.
case subscriptionExpired = 21006

//  This receipt is from the test environment, but it was sent to the production environment for verification. Send it to the test environment instead.
case testReceipt = 21007

// This receipt is from the production environment, but it was sent to the test environment for verification. Send it to the production environment instead.
case productionEnvironment = 21008
 }

  func validateReceipt(forTransaction transaction: SKPaymentTransaction) {

    guard let receiptURL = NSBundle.mainBundle().appStoreReceiptURL else { return }

    guard let receipt = NSData(contentsOfURL: receiptURL) else { return }

    let receiptData = receipt.base64EncodedStringWithOptions(NSDataBase64EncodingOptions(rawValue: 0))
    let payload = ["receipt-data": receiptData]

    var receiptPayloadData: NSData?

    do {
        receiptPayloadData = try NSJSONSerialization.dataWithJSONObject(payload, options: NSJSONWritingOptions(rawValue: 0))
    }
    catch let error as NSError {
        print(error.localizedDescription)
        return
    }

    guard let payloadData = receiptPayloadData else { return }
    guard let requestURL = NSURL(string: RequestURL.sandbox.rawValue) else { return }

    let request = NSMutableURLRequest(URL: requestURL)
    request.HTTPMethod = "POST"
    request.HTTPBody = payloadData

    let task = NSURLSession.sharedSession().dataTaskWithRequest(request) { (data, response, error) in
         if let error = error {
            print(error.localizedDescription)
            return
        }  
         guard let data = data else { return }          

         do {
            let jsonData = try NSJSONSerialization.JSONObjectWithData(data, options: .MutableLeaves) as? NSDictionary

            guard let json = jsonData else { return }

            // Correct ?
            guard let status = json["status"] as? Int where status == ReceiptStatusCode.valid.rawValue else { return }

            // Unlock product here?
            // Other checks needed?
        }

        catch let error as NSError {
            print(error.localizedDescription)
            return
        }
     }

    task.resume()
}

它是漂亮的锅炉板代码,并按预期工作.我现在的问题是我不知道如何在最后一步(标记线)实际验证收据.我相信我现在必须进行5次左右的检查以验证收据.我不知道他们中的大部分将如何在swift中完成.大多数教程都是旧的,不包括这一步或不是用swift编写的.

如果任何成功使用收据验证的人可以帮助我朝着正确的方向前进,那将非常感激.非常感谢你

更新:

在JSA986I和cbartel得到了很好的答案后,我把它变成了github上的帮手.非常感谢您的帮助

https://github.com/crashoverride777/SwiftyReceiptValidator

Answer 1

以下是使用Apple指南后使用Swift 2.1版的解决方案.

Apple还建议如下:

"验证服务器上的收据时,您的服务器需要能够处理生产签名的应用程序从Apple的测试环境中获取收据.建议的方法是让您的生产服务器始终首先根据生产App Store验证收据.如果验证失败,错误代码为"生产中使用的沙盒收据",而是针对测试环境进行验证."

validateReceipt(NSBundle.mainBundle().appStoreReceiptURL) { (success: Bool) -> Void in
            print(success)
        }

private func receiptData(appStoreReceiptURL : NSURL?) -> NSData? {

    guard let receiptURL = appStoreReceiptURL,
        receipt = NSData(contentsOfURL: receiptURL) else {
            return nil
    }

    do {
        let receiptData = receipt.base64EncodedStringWithOptions(NSDataBase64EncodingOptions(rawValue: 0))
        let requestContents = ["receipt-data" : receiptData]
        let requestData = try NSJSONSerialization.dataWithJSONObject(requestContents, options: [])
        return requestData
    }
    catch let error as NSError {
        print(error)
    }

    return nil
}

private func validateReceiptInternal(appStoreReceiptURL : NSURL?, isProd: Bool , onCompletion: (Int?) -> Void) {

    let serverURL = isProd ? "https://buy.itunes.apple.com/verifyReceipt" : "https://sandbox.itunes.apple.com/verifyReceipt"

    guard let receiptData = receiptData(appStoreReceiptURL),
        url = NSURL(string: serverURL)  else {
        onCompletion(nil)
        return
    }

    let request = NSMutableURLRequest(URL: url)
    request.HTTPMethod = "POST"
    request.HTTPBody = receiptData

    let task = NSURLSession.sharedSession().dataTaskWithRequest(request, completionHandler: {data, response, error -> Void in

        guard let data = data where error == nil else {
            onCompletion(nil)
            return
        }

        do {
            let json = try NSJSONSerialization.JSONObjectWithData(data, options:[])
            print(json)
            guard let statusCode = json["status"] as? Int else {
                onCompletion(nil)
                return
            }
            onCompletion(statusCode)
        }
        catch let error as NSError {
            print(error)
            onCompletion(nil)
        }
    })
    task.resume()
}

public func validateReceipt(appStoreReceiptURL : NSURL?, onCompletion: (Bool) -> Void) {

    validateReceiptInternal(appStoreReceiptURL, isProd: true) { (statusCode: Int?) -> Void in
        guard let status = statusCode else {
            onCompletion(false)
            return
        }

        // This receipt is from the test environment, but it was sent to the production environment for verification.
        if status == 21007 {
            self.validateReceiptInternal(appStoreReceiptURL, isProd: false) { (statusCode: Int?) -> Void in
                guard let statusValue = statusCode else {
                    onCompletion(false)
                    return
                }

                // 0 if the receipt is valid
                if statusValue == 0 {
                    onCompletion(true)
                } else {
                    onCompletion(false)
                }

            }

        // 0 if the receipt is valid
        } else if status == 0 {
            onCompletion(true)
        } else {
            onCompletion(false)
        }
    }
}

Answer 2

这就是您将收据作为 JSON 返回并可以访问它的地方。IE

if parseJSON["status"] as? Int == 0 {
    println("Sucessfully returned purchased receipt data")
}

会告诉您是否已成功收到收据，因为这["status"] 0意味着它已被退回

您可以进一步查询和使用收据数据来查找和使用来自 JSON 响应的项目​​。在这里您可以打印最新的收据信息

if let receiptInfo: NSArray = parseJSON["latest_receipt_info"] as? NSArray {
    let lastReceipt = receiptInfo.lastObject as! NSDictionary
    // Get last receipt
    println("LAST RECEIPT INFORMATION \n",lastReceipt)
}

现在您可以使用 json 数据

您现在可以查询该数据，在此示例中，我们从 JSOn 响应中找出自动续订订阅的订阅何时到期

// Format date
var formatter = NSDateFormatter()
formatter.dateFormat = "yyyy-MM-dd HH:mm:ss VV"
formatter.locale = NSLocale(localeIdentifier: "en_US_POSIX")

// Get Expiry date as NSDate
let subscriptionExpirationDate: NSDate = formatter.dateFromString(lastReceipt["expires_date"] as! String) as NSDate!
println("\n   - DATE SUBSCRIPTION EXPIRES = \(subscriptionExpirationDate)")

把上面的代码贴在下面

if let parseJSON = json {
    println("Receipt \(parseJSON)")
}