Using PNS (Push Notification Service)

Overview

ONE store provides two Push Notification Services for developers.

If the transaction of in-app product billing or billing cancellation occurs, ONE store provides PNS (payment notification service), which sends a notification to the developer's server.
An SNS (Subscription Notification Service) that sends notifications to the developer server when the subscription status changes

Please note:

The notification might be delayed or lost depending on the status of transmitting/receiving servers, and therefore it is not recommended that you provide in-app (services) based on the reception of the notification.
If you want to identify whether the purchase is valid through server-to-server, it is recommended to search with the related server API instead of using PNS notifications.
ONE store can perform the billing test for the purpose of reviewing and monitoring, and in addition, the notification will be sent when the billing/billing cancellation is performed in the billing test. The history of the billing test performed by ONE store will be periodically canceled by ONE store.

Set Up PNS Receiving Server URL

You can set the URL of the developer's server to receive PNS by clicking on the 'Manage PNS' button on the 'Developer Center > Apps > Select In-Apps > In-App' menu.

The URL can set up the Sandbox (for development) and commercial (including commercial test) test environments respectively, and if the development/commercial servers are the same, enter the same URL.

PNS Details

Specifications for Sending Payment Notification Messages (ONE store → Developer Server)

URI: Payment Notification URL set up by the Developer Center
Method: POST
Request Parameters: N/A
Request Header:
Request Body: JSON format
Example

{
	"msgVersion" : "3.0.0"
	"packageName":"com.onestore.pns",
	"productId":"0900001234",
	"messageType":"SINGLE_PAYMENT_TRANSACTION",
	"purchaseId":"SANDBOX3000000004564",
	"developerPayload":"OS_000211234",
	"purchaseTimeMillis":24431212233,
	"purchaseState":"COMPLETED",
	"price":"10000",
	"priceCurrencyCode":"KRW"
	"productName":"GOLD100(+20)"
	"paymentTypeList":[
		{
			"paymentMethod":"DCB",
			"amount":"3000"
		},
		{
			"paymentMethod":"ONESTORECASH",
			"amount":"7000"
		}
	],
	"billingKey" : "36FED4C6E4AC9E29ADAF356057DB98B5CB92126B1D52E8757701E3A261AF49CCFBFC49F5FEF6E277A7A10E9076B523D839E9D84CE9225498155C5065529E22F5",
	"isTestMdn" : true,
	"purchaseToken" : "TOKEN...",
	"environment" : "SANDBOX",
	"marketCode" : "MKT_ONE"
	"signature" "SIGNATURE..."
}

Definition of paymentMethod (ONE store payment method)

How to review the signature

You can check whether the signature has been forced or falsified by using the code below.

PublicKey within the code indicates the license key provided on 'Developer Center > In-App > Credentials'. For details on the license key, refer to "Check License Key (public key) & OAuthCredentials" within the Pre-preparations page.

import java.security.PublicKey;
   
import org.apache.commons.codec.binary.Base64;
import org.codehaus.jackson.JsonNode;
import org.codehaus.jackson.map.ObjectMapper;
import org.codehaus.jackson.node.ObjectNode;
   
   
public class SignatureVerifier {
   
    private static final String SIGN_ALGORITHM = "SHA512withRSA";
    private ObjectMapper mapper = new ObjectMapper();
   
   
    boolean verify(String rawMsg, PublicKey key) throws Exception {
        // JSON 메시지에서 signature를 추출한다.
        JsonNode root = mapper.readTree(rawMsg);
        String signature = root.get("signature").getValueAsText();
        ((ObjectNode)root).remove("signature");
          
        // 추출한 signature가 올바른 값인지 검증한다.
        Signature sign = Signature.getInstance(SIGN_ALGORITHM);
        sign.initVerify(key);
        sign.update(root.toString().getBytes("UTF-8"));
        return sign.verify(Base64.decodeBase64(signature));
    }
}

<?php
function formatPublicKey($publicKey) {
 $BEGIN= "-----BEGIN PUBLIC KEY-----";
 $END = "-----END PUBLIC KEY-----";
  
 $pem = $BEGIN . "\n";
 $pem .= chunk_split($publicKey, 64, "\n");
 $pem .= $END . "\n";
  
 return $pem;
}
  
function formatSignature($signature) {
 return base64_decode(chunk_split($signature, 64, "\n"));
}
  
// Sample message
$sampleMessage = '{"msgVersion":"2.0.0.D","purchaseId":"SANDBOX3000000004564","developerPayload":"OS_000211234","packageName":"com.onestore.pns","productId":"0900001234","messageType":"SINGLE_PAYMENT_TRANSACTION","purchaseMillis":24431212233,"purchaseState":"COMPLETED","price":20000,"productName":"한글은?GOLD100(+20)","paymentTypeList":[{"paymentMethod":"DCB","amount":3000},{"paymentMethod":"ONESTORECASH","amount":7000}],"billingKey":"36FED4C6E4AC9E29ADAF356057DB98B5CB92126B1D52E8757701E3A261AF49CCFBFC49F5FEF6E277A7A10E9076B523D839E9D84CE9225498155C5065529E22F5","isTestMdn":true,"signature":"MNxIl32ws+yYWpUr7om+jail4UQxBUXdNX5yw5PJKlqW2lurfvhiqF0p4XWa+fmyV6+Ot63w763Gnx2+7Zp2Wgl73TWru5kksBjqVJ3XqyjUHDDaF80aq0KvoQdLAHfKze34cJXKR/Qu8dPHK65PDH/Vu6MvPVRB8TvCJpkQrqg="}';
  
// Sample public key
$publicKey = "MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDMzpWJoK1GSOrr4juma5+sREYjdCW8/xSd9+6z6PAkUH5af97wy8ecfkLtP9LK5VskryfDlcOjfu0BgmHYntAqKT7B4KWk8jWbJ8VHUpp30H95UbcnCRFDqpEtwYzNA5gNMYKtAdbL41K8Fbum0Xqxo65pPEI4UC3MAG96O7X1WQIDAQAB";
  
  
// Parse JSON message
$jsonArr = json_decode($sampleMessage, true);
  
// Extract and remove signature
$signature = $jsonArr["signature"];
unset($jsonArr["signature"]);
$originalMessage = json_encode($jsonArr, JSON_UNESCAPED_UNICODE);
  
// Veify
$formattedKey = formatPublicKey($publicKey);
$formattedSign = formatSignature($signature);
$hash_algorithm = 'sha512';
  
$success = openssl_verify($originalMessage, $formattedSign, $formattedKey, $hash_algorithm);
if ($success == 1) {
 echo "verified";
}
else {
 echo "unverified";
}
?>

# -*- coding: utf-8 -*-
  
import json
from base64 import b64decode
from collections import OrderedDict
  
from Crypto.Hash import SHA512
from Crypto.PublicKey import RSA
from Crypto.Signature import PKCS1_v1_5
  
import sys
reload(sys)
sys.setdefaultencoding('utf-8')
  
hash = "SHA-512"
  
  
def verify(message, signature, pub_key):
    signer = PKCS1_v1_5.new(pub_key)
    digest = SHA512.new()
    digest.update(message)
    return signer.verify(digest, signature)
  
  
jsonData = json.loads(rawMsg, encoding='utf-8', object_pairs_hook=OrderedDict)
signature = jsonData['signature']
del jsonData['signature']
originalMessage = json.dumps(jsonData, ensure_ascii=False, encoding='utf-8', separators=(',', ':'))
  
RSA.importKey(publickey).publickey()
print(verify(originalMessage, b64decode(signature), RSA.importKey(publickey).publickey()))

Specifications for Sending Subscription Notification Messages (ONE store → Developer Server)

URI: Subscription Notification URL set up by the Developer Center
Method: POST
Request Parameters: N/A
Request Header:
Request Body: JSON format
Example

{
    "msgVersion":"3.0.0",
    "packageName":"com.onestore.pns",
    "eventTimeMillis":24431212233000,
    "subscriptionNotification": {
        "version": "1",
        "notificationType" : 1,
        "purchaseToken":"TOKEN",
        "productId": "com.product.id"
    },
    "environmenmt": "COMMERCIAL",
    "marketCode": "MKT_ONE"
}

Defining Subscription Statuses

Notification Transmission Policy

ONE store's PNS server shall send notification to the developer's server through HTTP(S) requests.At this time, the developer's server must respond with the HTTP Status Code as 200 to indicate that the notification has been normally received.If the HTTP Status Code fails to be received as 200 (as the response due to the loss of notification caused by delays in the network or due to the failure in the developer's server), the PNS server determines that the notification transmission has failed, and thereby will perform up to 30 rounds of retransmission during 3 days.The retransmission of the notification will be performed after certain delays as seen in the example below, and more retransmission rounds will lead to more delays.

Example

Last updated 3 months ago