Uber Invalid OAuth 2.0 credentials provided Uber Authentication In ios Swift - ios

Question

I'm implementing the Uber's Request Endpoint in my iOS (Swift) App. The Request API/Endpoint requires the user authentication with the app, here is the doc.
For this I'm using this Oauth2.0 library
What I did is
successfully integrated the Library in my project (xCode) with the help of given installation instructions.
In My AppDelegate
let uber_OAuth_Settings = [
"client_id": "XXXXXXX9vtKzobvXXXXXX",
"client_secret": "EXXXXXXXXyFUNCa_Wez6AXXXXXXXnrXtxus",
"authorize_uri": "https://login.uber.com/oauth/authorize",
"token_uri": "https://login.uber.com/oauth/token",
"redirect_uris": ["jamesappv2://oauth/callback"], // don't forget to register this scheme
] as OAuth2JSON
var oauth:OAuth2CodeGrant!
in my method didFinishLaunchingWithOptions of Appdelegate
oauth = OAuth2CodeGrant(settings: uber_OAuth_Settings)
oauth.viewTitle = "Uber Login Service" // optional
oauth.verbose = true // For Logs
Don't forget to register url scheme i.e ("redirect_uris": ["jamesappv2://oauth/callback"])
goto your app's Target -> info Tab -> Url Types -> Click (+), image attached
In AppDelegate add method given Below and Handle the Callback Url
func application(application: UIApplication,
openURL url: NSURL,
sourceApplication: String?,
annotation: AnyObject?) -> Bool {
// you should probably first check if this is your URL being opened
var splitUrl = url.absoluteString!.componentsSeparatedByString(":")
if splitUrl[0] == ("jamesappv2") {
oauth.handleRedirectURL(url)
}
return true
}
Now in my viewController I did like this on myBtnClick
let appDelegate = UIApplication.sharedApplication().delegate as! AppDelegate
let url = appDelegate.oauth.authorizeURL()
UIApplication.sharedApplication().openURL(url)
appDelegate.oauth.onAuthorize = { parameters in
println("Did authorize with parameters: \(parameters)")
self.navigationController?.pushViewController(self.PersonalDriverUber_VC, animated: true)
//On Authorization Goto another ViewController using pushViewController of navigationcontroller Method
}
appDelegate.oauth.onFailure = { error in // `error` is nil on cancel
if nil != error {
println("Authorization went wrong: \(error!.localizedDescription)")
}
}
Here is my debug log, I'm getting the valid response:
OAuth2: Handling redirect URL jamesappv2://oauth/callback?state=4B0EB812&code=0sXXXXXXTX7yEbS1XXXXXHuw
OAuth2: Successfully validated redirect URL
OAuth2: Authorizing against https://login.uber.com/oauth/token?state=38158941&grant_type=authorization_code&code=0sXXXXXXXX1jxTrdFQT9Huw&client_secret=EIXXXXXXXNCa_Wez6XXXXXw0BlnrXtxus&client_id=fXXXXXXXy2LOUo9vtKXXXXXQ1nUDO&redirect_uri=jamesappv2%3A%2F%2Foauth%2Fcallback
OAuth2: Exchanging code 0swNXXXXX7yXXXXXXdFQT9Huw with redirect jamesappv2://oauth/callback for token at Optional("https://login.uber.com/oauth/token")
OAuth2: Did receive access token: Dfq3XXXXXXuWgpaqFXXXXXXXgXW, refresh token: EmStT7FEXHRMlS8odPzs1nsha0ObjK
Did authorize with parameters: [token_type: Bearer, expires_in: 2592000, access_token: XXXXXXOZuWgXXXXXXXXuJYOmgXW, refresh_token: EXXXXXHRMlS8oXXXXXXXa0ObjK, scope: profile, last_authenticated: 1430121470]
Notice I'm getting the valid access_token
Here I'm stuck
As per DOCs says in STEP4 *USE BEARER TOKEN
Pass the access_token returned in the response in the Authorization header with the type Bearer to make requests on behalf of a user.*
curl -H 'Authorization: Bearer YOUR_ACCESS_TOKEN' 'https://api.uber.com/v1/products?latitude=37.7759792&longitude=-122.41823'
I am not getting the point. How should I pass the access_token in Header with type Bearer? I have done like below
func callRequestAPI(url:String){
let request = appDelegate.oauth.request(forURL: NSURL(string:url)!)
request.HTTPMethod = "POST"
let postString = "product_id="+selectedUberProductId+"&start_latitude="+start_lat+"&start_longitude="+start_lng+"&end_latitude="+end_lat+"&end_longitude="+end_lng
println(postString)
let tempData: NSData = appDelegate.oauth.accessToken.dataUsingEncoding(NSUTF8StringEncoding)!
let base64LoginString = tempData.base64EncodedStringWithOptions(nil)
request.HTTPBody = postString.dataUsingEncoding(NSUTF8StringEncoding)
request.addValue("application/json", forHTTPHeaderField: "Content-Type")
request.addValue("application/json", forHTTPHeaderField: "Accept")
request.setValue("Bearer \(base64LoginString)", forHTTPHeaderField: "Authorization")
let session = NSURLSession.sharedSession()
let task = session.dataTaskWithRequest(request) { data, response, error in
if error != nil {
println("error=\(error)")
return
}
println("response = \(response)")
let responseString = NSString(data: data, encoding: NSUTF8StringEncoding)
println("responseString = \(responseString)")
}
task.resume()
}
but I'm getting following response
response = <NSHTTPURLResponse: 0x1a284b50> { URL: https://sandbox-api.uber.com/v1/requests } { status code: 401, headers {
"Content-Length" = 75;
"Content-Type" = "application/json";
Date = "Mon, 27 Apr 2015 10:22:01 GMT";
Server = nginx;
"Strict-Transport-Security" = "max-age=31536000; includeSubDomains; preload";
"x-uber-app" = "uberex-sandbox";
"x-xss-protection" = "1; mode=block";
} }
responseString = Optional({"message":"Invalid OAuth 2.0 credentials provided.","code":"unauthorized"})

Answer 1

Finally I have done it :)
I changed the method like below and it Worked
func callRequestAPI(url:String){
var configuration = NSURLSessionConfiguration.defaultSessionConfiguration()
var session = NSURLSession(configuration: configuration)
let params:[String: AnyObject] = [
"product_id" : selectedUberProductId,
"start_latitude" : start_lat,
"start_longitude" : start_lng,
"end_latitude" : end_lat,
"end_longitude" : end_lng]
let request = appDelegate.oauth.request(forURL: NSURL(string:url)!)
request.setValue("application/json; charset=utf-8", forHTTPHeaderField: "Content-Type")
request.HTTPMethod = "POST"
var err: NSError?
request.HTTPBody = NSJSONSerialization.dataWithJSONObject(params, options: NSJSONWritingOptions.allZeros, error: &err)
let task = session.dataTaskWithRequest(request) {
data, response, error in
if let httpResponse = response as? NSHTTPURLResponse {
if httpResponse.statusCode != 202 {
println("response was not 202: \(response)")
return
}
}
if (error != nil) {
println("error submitting request: \(error)")
return
}
// handle the data of the successful response here
var result = NSJSONSerialization.JSONObjectWithData(data, options: NSJSONReadingOptions.allZeros, error: nil) as! NSDictionary
println(result)
if let request_id: String = result["request_id"] as? String{
println(request_id)
}
if let driver: String = result["driver"] as? String{
println(driver)
}
if let eta: Int = result["eta"] as? Int{
println(eta)
}
if let location: String = result["location"] as? String{
println(location)
}
if let status: String = result["status"] as? String{
println(status)
}
if let surge_multiplier: Int = result["surge_multiplier"] as? Int{
println(surge_multiplier)
}
if let vehicle: String = result["vehicle"] as? String{
println(vehicle)
}
}
task.resume()
}
here is the Response I Got, Parsing is also given in my above method
{
driver = "<null>";
eta = 15;
location = "<null>";
"request_id" = "ea39493d-b718-429f-8710-00a34dcdaa93";
status = processing;
"surge_multiplier" = 1;
vehicle = "<null>";
}
Enjoy

Answer 2

Updated for Swift 2. I used the same setup and library for oauth that Qadir describes in his question. I updated his request to work in Swift 2. Hope this helps others.
uberRequest:
let params:[String:AnyObject] = [
"product_id" : uberProduct,
"start_latitude" : userLat,
"start_longitude" : userLng,
"end_latitude" : barLat,
"end_longitude" : barLng]
let urlPath = "https://sandbox-api.uber.com/v1/requests"
let appDelegate = UIApplication.sharedApplication().delegate as! AppDelegate
var configuration = NSURLSessionConfiguration.defaultSessionConfiguration()
var session = NSURLSession(configuration: configuration)
guard let endpoint = NSURL(string: urlPath) else { print("Error creating endpoint");return }
let request = appDelegate.oauth.request(forURL: NSURL(string:urlPath)!)
request.setValue("application/json; charset=utf-8", forHTTPHeaderField:"Content-Type")
request.HTTPBody = try! NSJSONSerialization.dataWithJSONObject(params, options: NSJSONWritingOptions.PrettyPrinted)
request.HTTPMethod = "POST"
print("Prepare to make request -> \(request)")
let task = NSURLSession.sharedSession().dataTaskWithRequest(request){ data, response, error in
if error != nil{
print("Error -> \(error)")
return
}
do {
let result = try NSJSONSerialization.JSONObjectWithData(data!, options: NSJSONReadingOptions.MutableContainers)
print("Result -> \(result)")
} catch {
print("Error -> \(error)")
}
}
task.resume()
It returns:
Result -> Optional(["driver": <null>, "request_id": 5834384c-7283-4fe6-88a7-e74150c6ab30, "surge_multiplier": 1, "location": <null>, "vehicle": <null>, "status": processing, "eta": <null>])

Answer 3

To use the token just follow step 5 of the instructions in the OAuth2 library, like you did before you started to try to sign it yourself a second time. The request has already been signed and has the Bearer token set up, there is nothing left to do for you:
let url = NSURL(string: "https://api.uber.com/v1/products?latitude=37.7759792&longitude=-122.41823")
let req = appDelegate.oauth.request(forURL: url)
// customize your request, if needed. E.g. for POST:
req.HTTPMethod = "POST"
// send the request
let session = NSURLSession.sharedSession()
let task = session.dataTaskWithRequest(req) { data, response, error in
if nil != error {
// something went wrong
}
else {
// check the response and the data
// you have just received data with an OAuth2-signed request!
}
}
task.resume()