How can I use saved tokens in NXOAuth2? - ios

Question

I am trying to implement a solution using the NXOauth2 pod to handle OAuth2 on my iOS app.
I am able to go through the installed application flow to get OAuth2 properties including accessToken and refreshToken - and the account is being saved into my NXOAuth2AccountStore properly (verified by inspecting [[NXOAuth2AccountStore sharedStore] accounts]).
Now that I have saved the tokens, I want to use them on subsequent app opens rather than go through requesting access again from the user. I do this here:
- (NSArray *)allAccounts
{
NXOAuth2AccountStore *store = [NXOAuth2AccountStore sharedStore];
NSArray *accounts = [store accountsWithAccountType:kIDMOAuth2AccountType];
return accounts;
}
The following call (to get some user details) works right after the user goes through the approval flow but it does not work when the app is closed and reopened.
- (void)requestOAuth2ProtectedDetails
{
[NXOAuth2Request performMethod:#"GET"
onResource:[NSURL URLWithString:#"https://www.googleapis.com/oauth2/v1/userinfo"]
usingParameters:nil
withAccount:[self allAccounts][0]
sendProgressHandler:^(unsigned long long bytesSend, unsigned long long bytesTotal) {
// e.g., update a progress indicator
}
responseHandler:^(NSURLResponse *response, NSData *responseData, NSError *error){
// Process the response
if (responseData) {
NSError *error;
NSDictionary *userInfo = [NSJSONSerialization JSONObjectWithData:responseData options:NSJSONReadingMutableContainers error:&error];
NSLog(#"%#", userInfo);
}
if (error) {
NSLog(#"%#", error.localizedDescription);
}
}];
}
How should I use a saved accessToken / refreshToken to:
Query data using requestOAuth2ProtectedDetails?
Get an updated accessToken if required, using the refreshToken I have saved?
Here is the error I am getting:
2014-06-23 09:41:17.040 Connector[8495:60b] Got access token
2014-06-23 09:41:19.296 Connector[8495:60b] *** Assertion failure in -[NXOAuth2Client initWithClientID:clientSecret:authorizeURL:tokenURL:accessToken:tokenType:persistent:delegate:], /Users/ericgross/Documents/Connector/Pods/NXOAuth2Client/Sources/OAuth2Client/NXOAuth2Client.m:82
2014-06-23 09:41:19.300 Connector[8495:60b] *** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'No token or no authorize URL'
*** First throw call stack:
(
0 CoreFoundation 0x01c281e4 __exceptionPreprocess + 180
1 libobjc.A.dylib 0x019a78e5 objc_exception_throw + 44
2 CoreFoundation 0x01c28048 +[NSException raise:format:arguments:] + 136
3 Foundation 0x015874de -[NSAssertionHandler handleFailureInMethod:object:file:lineNumber:description:] + 116
4 Connector 0x00011456 -[NXOAuth2Client initWithClientID:clientSecret:authorizeURL:tokenURL:accessToken:tokenType:persistent:delegate:] + 502
5 Connector 0x00009a59 -[NXOAuth2Account oauthClient] + 841
6 Connector 0x0001f30b -[NXOAuth2Request performRequestWithSendingProgressHandler:responseHandler:] + 667
7 Connector 0x0001e8d4 +[NXOAuth2Request performMethod:onResource:usingParameters:withAccount:sendProgressHandler:responseHandler:] + 404
8 Connector 0x00003eca -[ESGOAuth2Manager requestOAuth2ProtectedDetails] + 266
9 Connector 0x00002cba -[ESGOAuth2Manager setup] + 282
10 Connector 0x0000214f -[ESGViewController viewDidLoad] + 415
11 UIKit 0x0078633d -[UIViewController loadViewIfRequired] + 696
12 UIKit 0x007865d9 -[UIViewController view] + 35
13 UIKit 0x006a6267 -[UIWindow addRootViewControllerViewIfPossible] + 66
14 UIKit 0x006a65ef -[UIWindow _setHidden:forced:] + 312
15 UIKit 0x006a686b -[UIWindow _orderFrontWithoutMakingKey] + 49
16 UIKit 0x006b13c8 -[UIWindow makeKeyAndVisible] + 65
17 UIKit 0x00661bc0 -[UIApplication _callInitializationDelegatesForURL:payload:suspended:] + 2097
18 UIKit 0x00666667 -[UIApplication _runWithURL:payload:launchOrientation:statusBarStyle:statusBarHidden:] + 824
19 UIKit 0x0067af92 -[UIApplication handleEvent:withNewEvent:] + 3517
20 UIKit 0x0067b555 -[UIApplication sendEvent:] + 85
21 UIKit 0x00668250 _UIApplicationHandleEvent + 683
22 GraphicsServices 0x02fa7f02 _PurpleEventCallback + 776
23 GraphicsServices 0x02fa7a0d PurpleEventCallback + 46
24 CoreFoundation 0x01ba3ca5 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__ + 53
25 CoreFoundation 0x01ba39db __CFRunLoopDoSource1 + 523
26 CoreFoundation 0x01bce68c __CFRunLoopRun + 2156
27 CoreFoundation 0x01bcd9d3 CFRunLoopRunSpecific + 467
28 CoreFoundation 0x01bcd7eb CFRunLoopRunInMode + 123
29 UIKit 0x00665d9c -[UIApplication _run] + 840
30 UIKit 0x00667f9b UIApplicationMain + 1225
31 Connector 0x0000443d main + 141
32 libdyld.dylib 0x02265701 start + 1
33 ??? 0x00000001 0x0 + 1
)
libc++abi.dylib: terminating with uncaught exception of type NSException
The first time through, this works:
- (void)performRequestWithSendingProgressHandler:(NXOAuth2ConnectionSendingProgressHandler)progressHandler
responseHandler:(NXOAuth2ConnectionResponseHandler)responseHandler;
{
NSAssert(self.me == nil, #"This object an only perform one request at the same time.");
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:self.resource];
[request setHTTPMethod:self.requestMethod];
self.connection = [[NXOAuth2Connection alloc] initWithRequest:request
requestParameters:self.parameters
oauthClient:self.account.oauthClient
sendingProgressHandler:progressHandler
responseHandler:responseHandler];
self.connection.delegate = self;
// Keep request object alive during the request is performing.
self.me = self;
}
And I notice the following:
(lldb) po self.account.oauthClient
<NXOAuth2Client: 0x8f1e760>
But in the failure case, this happens:
(lldb) po self.account.oauthClient
2014-06-23 10:13:25.457 Connector[8678:60b] *** Assertion failure in -[NXOAuth2Client initWithClientID:clientSecret:authorizeURL:tokenURL:accessToken:tokenType:persistent:delegate:], /Users/ericgross/Documents/Connector/Pods/NXOAuth2Client/Sources/OAuth2Client/NXOAuth2Client.m:82
error: Execution was interrupted, reason: internal ObjC exception breakpoint(-3)..
The process has been returned to the state before expression evaluation.

Answer 1

The library works pretty well,it automatically saves your accounts after a successful login was made. The accounts are not deleted from the account store unless you specifically say so.
For example i use this to delete all account on logout:
NXOAuth2AccountStore* store=[NXOAuth2AccountStore sharedStore];
for (NXOAuth2Account *account in [store accounts]) {
[store removeAccount:account];
}
see that you don't remove your accounts when you enter on close the app.
As for the second matter, i am searching for a solution as well