PayUMoney payment gateway issue - ios

Question

I have to integrate PayUMoney payment gateway in my iOS app. They don't have SDK for iOS. So I have to load some web URL in webview for the payment. My parameters are
int i = arc4random() % 9999999999;
NSString *strHash = [self createSHA512:[NSString stringWithFormat:#"%d%#",i,[NSDate date]]];// Generatehash512(rnd.ToString() + DateTime.Now);
NSString *txnid1 = [strHash substringToIndex:20];
NSLog(#"tnx1 id %#",txnid1);
NSString *key = #"JBZaLc";
NSString *amount = #"1000";
NSString *productInfo = #"Nice product";
NSString *firstname = #"Mani";
NSString *email = #"mani.ingenius#gmail.com";
NSString *phone = #"1234566";
NSString *surl = #"www.google.com";
NSString *furl = #"www.google.com";
NSString *serviceprovider = #"payu_paisa";
NSString *action = #"https://test.payu.in/_payment";
NSString *hashValue = [NSString stringWithFormat:#"%#|%#|%#|%#|%#|%#|udf1|udf2|udf3|udf4|udf5||||||salt",key,txnid1,amount,productInfo,firstname,email];
NSString *hash = [self createSHA512:hashValue];
NSDictionary *parameters = [NSDictionary dictionaryWithObjects:[NSArray arrayWithObjects:txnid1,key,amount,productInfo,firstname,email,phone,surl,furl,hash,serviceprovider,action, nil] forKeys:[NSArray arrayWithObjects:#"txnid",#"key",#"amount",#"productinfo",#"firstname",#"email",#"phone",#"surl",#"furl",#"hash",#"service_provider",#"action", nil]];
I have to use POST method with my test URL (https://test.payu.in/_payment) and need to pass parameters. I have all parameters with key and value in dictionary("parameters"). So I tried following code
NSData *dataValue = [self getPropertiesAsData:parameters];
NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:#"https://test.payu.in/_payment"]];
// Create a mutable copy of the immutable request and add more headers
NSMutableURLRequest *mutableRequest = [request mutableCopy];
[mutableRequest setHTTPMethod: #"POST"];
[mutableRequest setHTTPBody: dataValue];
request = [mutableRequest copy];
[_webviewSample loadRequest:request];
-(NSData *)getPropertiesAsData :(NSDictionary *)dict{
NSMutableData *body = [NSMutableData postData];
[dict enumerateKeysAndObjectsUsingBlock:^(id key, id obj, BOOL *stop) {
[body addValue:[obj stringByReplacingOccurrencesOfString:#" " withString:#"%20"] forKey:key];
}];
return body;
}
-(NSString *)createSHA512:(NSString *)string
{
const char *cstr = [string cStringUsingEncoding:NSUTF8StringEncoding];
NSData *data = [NSData dataWithBytes:cstr length:string.length];
uint8_t digest[CC_SHA512_DIGEST_LENGTH];
CC_SHA512(data.bytes, data.length, digest);
NSMutableString* output = [NSMutableString stringWithCapacity:CC_SHA512_DIGEST_LENGTH * 2];
for(int i = 0; i < CC_SHA512_DIGEST_LENGTH; i++)
[output appendFormat:#"%02x", digest[i]];
return output;
}
But when I run this, it says "Mandatory parameter tnxid is missing". But I have passed the tnxid which you can see in parameters dictionary. If I pass everything correctly then result will be the webpage where user can select bank details, etc that I have to load it in my web view.
Please help me to find what I did wrong or what I should do to get correct result.

Answer 1

I found answer successfully. My working code is listed below
int i = arc4random() % 9999999999;
NSString *strHash = [self createSHA512:[NSString stringWithFormat:#"%d%#",i,[NSDate date]]];// Generatehash512(rnd.ToString() + DateTime.Now);
NSString *txnid1 = [strHash substringToIndex:20];
NSLog(#"tnx1 id %#",txnid1);
NSString *key = #"JBZaLc";
NSString *amount = #"1000";
NSString *productInfo = #"Nice product";
NSString *firstname = #"Mani";
NSString *email = #"mani.ingenius#gmail.com";
NSString *phone = #"1234566";
NSString *surl = #"www.google.com";
NSString *furl = #"www.google.com";
NSString *serviceprovider = #"payu_paisa";
NSString *hashValue = [NSString stringWithFormat:#"%#|%#|%#|%#|%#|%#|||||||||||GQs7yium",key,txnid1,amount,productInfo,firstname,email];
NSString *hash = [self createSHA512:hashValue];
NSDictionary *parameters = [NSDictionary dictionaryWithObjects:[NSArray arrayWithObjects:txnid1,key,amount,productInfo,firstname,email,phone,surl,furl,hash,serviceprovider
, nil] forKeys:[NSArray arrayWithObjects:#"txnid",#"key",#"amount",#"productinfo",#"firstname",#"email",#"phone",#"surl",#"furl",#"hash",#"service_provider", nil]];
__block NSString *post = #"";
[parameters enumerateKeysAndObjectsUsingBlock:^(id key, id obj, BOOL *stop) {
if ([post isEqualToString:#""]) {
post = [NSString stringWithFormat:#"%#=%#",key,obj];
}else{
post = [NSString stringWithFormat:#"%#&%#=%#",post,key,obj];
}
}];
NSData *postData = [post dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES];
NSString *postLength = [NSString stringWithFormat:#"%lu",(unsigned long)[postData length]];
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];
[request setURL:[NSURL URLWithString:[NSString stringWithFormat:#"https://test.payu.in/_payment"]]];
[request setHTTPMethod:#"POST"];
[request setValue:postLength forHTTPHeaderField:#"Content-Length"];
[request setValue:#"application/x-www-form-urlencoded" forHTTPHeaderField:#"Current-Type"];
[request setHTTPBody:postData];
[_webviewSample loadRequest:request];
then functions to be used
-(NSString *)createSHA512:(NSString *)string
{
const char *cstr = [string cStringUsingEncoding:NSUTF8StringEncoding];
NSData *data = [NSData dataWithBytes:cstr length:string.length];
uint8_t digest[CC_SHA512_DIGEST_LENGTH];
CC_SHA512(data.bytes, (CC_LONG)data.length, digest);
NSMutableString* output = [NSMutableString stringWithCapacity:CC_SHA512_DIGEST_LENGTH * 2];
for(int i = 0; i < CC_SHA512_DIGEST_LENGTH; i++)
[output appendFormat:#"%02x", digest[i]];
return output;
}

Answer 2

Finally i resolved the issue regarding PayU India (not payU,payU and payUindia have a slight difference as mention) integration (above code is for payU Money help alot)
Download github Repo here
You only need to remove an extra parameter which is service_provider whose value is payu_paisa.
int i = arc4random() % 9999999999;
NSString *strHash = [self createSHA512:[NSString stringWithFormat:#"%d%#",i,[NSDate date]]];// Generatehash512(rnd.ToString() + DateTime.Now);
NSString *txnid1 = [strHash substringToIndex:20];
NSLog(#"tnx1 id %#",txnid1);
NSString *key = #"YOURKEY";
NSString *salt = #"YOURSALTKEY";
NSString *amount = #"100";
NSString *productInfo = #"Niceproduct";
NSString *firstname = #"Deepak";
NSString *email = #"iphonemaclover#gmail.com";
NSString *phone = #"9212138007";
NSString *surl = #"www.google.com";
NSString *furl = #"www.google.com";
NSString *hashValue = [NSString stringWithFormat:#"%#|%#|%#|%#|%#|%#|||||||||||%#",key,txnid1,amount,productInfo,firstname,email,salt];
NSString *hash = [self createSHA512:hashValue];
NSDictionary *parameters = [NSDictionary dictionaryWithObjects:[NSArray arrayWithObjects:txnid1,key,amount,productInfo,firstname,email,phone,surl,furl,hash
, nil] forKeys:[NSArray arrayWithObjects:#"txnid",#"key",#"amount",#"productinfo",#"firstname",#"email",#"phone",#"surl",#"furl",#"hash", nil]];
__block NSString *post = #"";
[parameters enumerateKeysAndObjectsUsingBlock:^(id key, id obj, BOOL *stop) {
if ([post isEqualToString:#""]) {
post = [NSString stringWithFormat:#"%#=%#",key,obj];
}else{
post = [NSString stringWithFormat:#"%#&%#=%#",post,key,obj];
}
}];
NSData *postData = [post dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES];
NSString *postLength = [NSString stringWithFormat:#"%lu",(unsigned long)[postData length]];
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];
[request setURL:[NSURL URLWithString:[NSString stringWithFormat:#"https://test.payu.in/_payment"]]];
[request setHTTPMethod:#"POST"];
[request setValue:postLength forHTTPHeaderField:#"Content-Length"];
[request setValue:#"application/x-www-form-urlencoded" forHTTPHeaderField:#"Current-Type"];
[request setHTTPBody:postData];
[_webviewSample loadRequest:request];
EDIT: how to handle URL payment is sucess or not
-(void)webViewDidFinishLoad:(UIWebView *)webView{
if (web_view_PayU.isLoading)
return;
NSURL *requestURL = [[web_view_PayU request] URL];
NSLog(#"requestURL=%#",requestURL);
NSString *getStringFromUrl=[NSString stringWithFormat:#"%#",requestURL];
if ([getStringFromUrl isEqualToString:#"https://test.payu.in/yoursucessurladdedhere "]||[getStringFromUrl isEqualToString:#"https://secure.payu.in/yoursucessurladdedhere "])
{
//SUCCESS ALERT
//jump to place order API
}
else if ([getStringFromUrl isEqualToString:#"https://test.payu.in/yourfailureurladdedhere "]||[getStringFromUrl isEqualToString:#"https://secure.payu.in/yourfailureurladdedhere"])
{
// FAIL ALERT
UIAlertView *alert=[[UIAlertView alloc]initWithTitle:#"Sorry!" message:#"Your Order Not Successfull!" delegate:self cancelButtonTitle:nil otherButtonTitles:#"OK", nil];
alert.tag=2222;
[alert show];
}
}
For Android Integration of Pay U check link--

Answer 3

I mailed to the PayUMoney Technical team and got my answer why i am getting error "Sorry, Some Problem Occurred."
Got a quick reply for the Technical Team:
Recently, we have done some modifications in test environment due to which test key-JBZaLc and salt-GQs7yium will not work anymore.
In order to test the gateway using a test key and salt, kindly follow these steps:
1 - Go on https://test.payumoney.com
2 - Sign up as a merchant - use any of your valid email ids - kindly do not use a random email id.
3 - Complete the "Business Details" - you may use PAN no. ABCDE1234F and DOB - 01/04/1990
4 - Complete "Bank Account Details" (You may use IFSC- ALLA0212632)
5 - Go to below mentioned location to get the Test Merchant Id :
Seller Dashboard -> Settings -> My account -> Profile Settings
Once you provide your test merchant id, we will approve it so that you can find your test key and salt at :
Seller Dashboard -> Settings -> My account -> Merchant Key - Salt
Download Github Repository

Answer 4

For swift Version
1) import into bridging header
** import CommonCrypto/CommonDigest.h **
2) after
func sha512Hex( string: String) -> String {
var digest = [UInt8](repeating: 0, count: Int(CC_SHA512_DIGEST_LENGTH))
if let data = string.data(using: String.Encoding.utf8) {
let value = data as NSData
CC_SHA512(value.bytes, CC_LONG(data.count), &digest)
}
var digestHex = ""
for index in 0..<Int(CC_SHA512_DIGEST_LENGTH) {
digestHex += String(format: "%02x", digest[index])
}
return digestHex
}
3) install pod PlugNPlay
4) after follow step provided PlugNPlay