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+//
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+// InAppReceipt.swift
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+// SwiftyStoreKit
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+//
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+// Created by phimage on 22/12/15.
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+// Copyright (c) 2015 Andrea Bizzotto (bizz84@gmail.com)
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+//
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+// Permission is hereby granted, free of charge, to any person obtaining a copy
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+// of this software and associated documentation files (the "Software"), to deal
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+// in the Software without restriction, including without limitation the rights
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+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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+// copies of the Software, and to permit persons to whom the Software is
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+// furnished to do so, subject to the following conditions:
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+//
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+// The above copyright notice and this permission notice shall be included in
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+// all copies or substantial portions of the Software.
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+//
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+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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+// THE SOFTWARE.
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+
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+import Foundation
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+
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+public struct AppleReceiptValidator: ReceiptValidator {
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+
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+ public enum VerifyReceiptURLType: String {
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+ case production = "https://buy.itunes.apple.com/verifyReceipt"
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+ case sandbox = "https://sandbox.itunes.apple.com/verifyReceipt"
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+ }
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+
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+ public init(service: VerifyReceiptURLType) {
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+ self.service = service
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+ }
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+
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+ private let service: VerifyReceiptURLType
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+
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+ public func validate(
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+ receipt: String,
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+ password autoRenewPassword: String? = nil,
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+ completion: @escaping (VerifyReceiptResult) -> Void) {
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+
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+ let storeURL = URL(string: service.rawValue)! // safe (until no more)
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+ let storeRequest = NSMutableURLRequest(url: storeURL)
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+ storeRequest.httpMethod = "POST"
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+
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+ let requestContents: NSMutableDictionary = [ "receipt-data" : receipt ]
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+ // password if defined
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+ if let password = autoRenewPassword {
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+ requestContents.setValue(password, forKey: "password")
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+ }
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+
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+ // Encore request body
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+ do {
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+ storeRequest.httpBody = try JSONSerialization.data(withJSONObject: requestContents, options: [])
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+ } catch let e {
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+ completion(.error(error: .requestBodyEncodeError(error: e)))
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+ return
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+ }
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+
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+ // Remote task
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+ let task = URLSession.shared.dataTask(with: storeRequest as URLRequest) { data, response, error -> Void in
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+
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+ // there is an error
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+ if let networkError = error {
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+ completion(.error(error: .networkError(error: networkError)))
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+ return
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+ }
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+
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+ // there is no data
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+ guard let safeData = data else {
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+ completion(.error(error: .noRemoteData))
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+ return
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+ }
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+
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+ // cannot decode data
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+ guard let receiptInfo = try? JSONSerialization.jsonObject(with: data!, options: .mutableLeaves) as? ReceiptInfo ?? [:] else {
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+ let jsonStr = String(data: safeData, encoding: String.Encoding.utf8)
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+ completion(.error(error: .jsonDecodeError(string: jsonStr)))
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+ return
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+ }
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+
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+ // get status from info
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+ if let status = receiptInfo["status"] as? Int {
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+ /*
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+ * http://stackoverflow.com/questions/16187231/how-do-i-know-if-an-in-app-purchase-receipt-comes-from-the-sandbox
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+ * How do I verify my receipt (iOS)?
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+ * Always verify your receipt first with the production URL; proceed to verify
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+ * with the sandbox URL if you receive a 21007 status code. Following this
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+ * approach ensures that you do not have to switch between URLs while your
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+ * application is being tested or reviewed in the sandbox or is live in the
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+ * App Store.
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+
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+ * Note: The 21007 status code indicates that this receipt is a sandbox receipt,
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+ * but it was sent to the production service for verification.
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+ */
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+ let receiptStatus = ReceiptStatus(rawValue: status) ?? ReceiptStatus.unknown
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+ if case .testReceipt = receiptStatus {
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+ let sandboxValidator = AppleReceiptValidator(service: .sandbox)
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+ sandboxValidator.validate(receipt: receipt, password: autoRenewPassword, completion: completion)
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+ }
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+ else {
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+ if receiptStatus.isValid {
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+ completion(.success(receipt: receiptInfo))
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+ }
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+ else {
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+ completion(.error(error: .receiptInvalid(receipt: receiptInfo, status: receiptStatus)))
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+ }
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+ }
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+ }
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+ else {
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+ completion(.error(error: .receiptInvalid(receipt: receiptInfo, status: ReceiptStatus.none)))
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+ }
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+ }
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+ task.resume()
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+ }
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+}
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Andrea Bizzotto