Swift Auto-Renewable Subscription Problems

Question

For the last 7 days I have been trying to create the Auto-Renewable Subscription.I have done it without the Shared Secret,i was following a tutorial,and the working code was with Storing Information on cloud.I wanted to use Reciept Validation but the code in the tutorial was full of bugs,and also the PHP code was full of errors.I have found another free tutorial, but the same thing,only bugs,no way of making it run.Till now I have searched the whole GitHub,i have payed the Lynda tutorial,and found lots of other tutorials but non of them is working.Is there any tutorial that you might suggest me,or can you help me out with the code.

Here is the swift code which has 2 bugs: Bugs in code func validateReceipt(){

var receiptUrl = NSBundle.mainBundle().appStoreReceiptURL
var receipt: NSData = NSData.dataWithContentsOfURL(receiptUrl!, options: nil, error: nil)

var response: NSURLResponse?
var error: NSError?

var receiptdata:NSString = receipt.base64EncodedStringWithOptions(NSDataBase64EncodingOptions(rawValue: 0))

var request = NSMutableURLRequest(URL: NSURL(string: "http://mm214.com/write.php")!)
var session = NSURLSession.sharedSession()
request.HTTPMethod = "POST"

var err: NSError?

request.HTTPBody = receiptdata.dataUsingEncoding(NSASCIIStringEncoding)

var task = session.dataTaskWithRequest(request, completionHandler: {data, response, error -> Void in
    var err: NSError?
    var json = NSJSONSerialization.JSONObjectWithData(data, options: .MutableLeaves, error: &err) as? NSDictionary

    if err != nil  {
        print(err!.localizedDescription)
        let jsonStr = NSString(data: data!, encoding: NSUTF8StringEncoding)
        print("Error could not parse JSON: '\(jsonStr)'")
    }
    else {
        if let parseJSON = json {
            println("Receipt \(parseJSON)")
        }
        else {
            let jsonStr = NSString(data: data!, encoding: NSUTF8StringEncoding)
            print("Receipt Error: \(jsonStr)")
        }
    }
})

task.resume()

Here is the php code:

<?php
        function getReceiptData($receipt)
        {
            $fh = fopen('showme.txt',w);
            fwrite($fh,$receipt);
            fclose($fh);
            $endpoint = 'https://sandbox.itunes.apple.com/verifyReceipt';

            $ch = curl_init($endpoint);
            curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
            curl_setopt($ch, CURLOPT_POST, true);
            curl_setopt($ch, CURLOPT_POSTFIELDS, $receipt);
            $response = curl_exec($ch);
            $errno = curl_errno($ch);
            $errmsg = curl_error($ch);
            curl_close($ch);
            $msg = $response.' - '.$errno.' - '.$errmsg;
            echo $response;
        }

    foreach ($_POST as $key=>$value){
        $newcontent .= $key.' '.$value;
    }

    $new = trim($newcontent);
    $new = trim($newcontent);
    $new = str_replace('_','+',$new);
    $new = str_replace(' =','==',$new);

    if (substr_count($new,'=') == 0){
    if (strpos('=',$new) === false){
            $new .= '=';
    }
    }

    $new = '{"receipt-data":"'.$new.'","password":"shared secreet"}';
    $info = getReceiptData($new);
    ?>

I'm getting the error on 31 line :

Warning: strpos(): Empty needle in /home2/arslan/public_html/verifyReciep.php on line 31 {"status":21002}

Answer 1

21002 - The data in the receipt-data property was malformed or missing.

Here receipt malformed when you convert it to NSData.

In the iOS 7 , Apple introduced new base64 methods on NSData that make it unnecessary to use a 3rd party base 64 decoding library , but i still suggest you to try to use Base64 encoding for receipt encoding. I hope this will solve your problem. As i also face same issue of 21002 when I verify receipt from server side and this encoding library works in this case. Don't know How , but it solved my issue at server side for receipt validation call. Hope it will work for you also.

Follow given steps :

1. Download Base64 from here.
2. Add Base64.h and Base64.m in your project.
3. Add bridging header to use Objective C file in Swift class.

To create Bridging Header.

4. Now use base64EncodedString() of added class.

Follow my answer for more detail. In-app purchase receipt verification for auto renewal using AFNetworking objective-c