I'm using the 3.1 Facebook SDK with iOS 6 Facebook set up in Settings and my app authorized.
This executes flawlessly:
[FBSession openActiveSessionWithReadPermissions:nil allowLoginUI:YES completionHandler:^(FBSession *fbSession, FBSessionState fbState, NSError *error) { ... }
However now when I try to get 'me' information I'm getting an error:
com.facebook.sdk:ParsedJSONResponseKey = {
body = {
error = {
code = 190;
"error_subcode" = 463;
message = "Error validating access token: Session has expired at unix time 1348704000. The current unix time is 1348706984.";
type = OAuthException;
};
};
code = 400;
}
If I look at [error code]
it's equal to 5. Shouldn't I have a valid access token after just logging in? Do I need to call reauthorize?
UPDATE: Reauthorizing doesn't help. Oddly the accessToken for my activeSession is always coming back the same. This despite calling closeAndClearToken.
If the token has expired, your app must send the user through the login flow again to regenerate a new short-lived access token. Make this call from your server, not a client. Your app secret is included in this API call, so you should never make the request client-side.
UPDATE: This issue has been addressed in Facebook iOS SDK 3.1.1.
I synched the code off of github and found that they weren't calling accountStore renewCredentialsForAccount:completion:
anywhere. I changed the following code in authorizeUsingSystemAccountStore
and it seems to have resolved the issue.
// we will attempt an iOS integrated facebook login
[accountStore requestAccessToAccountsWithType:accountType
options:options
completion:^(BOOL granted, NSError *error) {
// this means the user has not signed-on to Facebook via the OS
BOOL isUntosedDevice = (!granted && error.code == ACErrorAccountNotFound);
dispatch_block_t postReauthorizeBlock = ^{
NSString *oauthToken = nil;
if (granted) {
NSArray *fbAccounts = [accountStore accountsWithAccountType:accountType];
id account = [fbAccounts objectAtIndex:0];
id credential = [account credential];
oauthToken = [credential oauthToken];
}
// initial auth case
if (!isReauthorize) {
if (oauthToken) {
_isFacebookLoginToken = YES;
_isOSIntegratedFacebookLoginToken = YES;
// we received a token just now
self.refreshDate = [NSDate date];
// set token and date, state transition, and call the handler if there is one
[self transitionAndCallHandlerWithState:FBSessionStateOpen
error:nil
token:oauthToken
// BUG: we need a means for fetching the expiration date of the token
expirationDate:[NSDate distantFuture]
shouldCache:YES
loginType:FBSessionLoginTypeSystemAccount];
} else if (isUntosedDevice) {
// even when OS integrated auth is possible we use native-app/safari
// login if the user has not signed on to Facebook via the OS
[self authorizeWithPermissions:permissions
defaultAudience:defaultAudience
integratedAuth:NO
FBAppAuth:YES
safariAuth:YES
fallback:YES
isReauthorize:NO];
} else {
// create an error object with additional info regarding failed login
NSError *err = [FBSession errorLoginFailedWithReason:nil
errorCode:nil
innerError:error];
// state transition, and call the handler if there is one
[self transitionAndCallHandlerWithState:FBSessionStateClosedLoginFailed
error:err
token:nil
expirationDate:nil
shouldCache:NO
loginType:FBSessionLoginTypeNone];
}
} else { // reauth case
if (oauthToken) {
// union the requested permissions with the already granted permissions
NSMutableSet *set = [NSMutableSet setWithArray:self.permissions];
[set addObjectsFromArray:permissions];
// complete the operation: success
[self completeReauthorizeWithAccessToken:oauthToken
expirationDate:[NSDate distantFuture]
permissions:[set allObjects]];
} else {
// no token in this case implies that the user cancelled the permissions upgrade
NSError *error = [FBSession errorLoginFailedWithReason:FBErrorReauthorizeFailedReasonUserCancelled
errorCode:nil
innerError:nil];
// complete the operation: failed
[self callReauthorizeHandlerAndClearState:error];
// if we made it this far into the reauth case with an untosed device, then
// it is time to invalidate the session
if (isUntosedDevice) {
[self closeAndClearTokenInformation];
}
}
}
};
if (granted) {
[accountStore renewCredentialsForAccount:[[accountStore accountsWithAccountType:accountType] lastObject] completion:^(ACAccountCredentialRenewResult renewResult, NSError *error) {
dispatch_async(dispatch_get_main_queue(), postReauthorizeBlock);
}];
} else {
// requestAccessToAccountsWithType:options:completion: completes on an
// arbitrary thread; let's process this back on our main thread
dispatch_async(dispatch_get_main_queue(), postReauthorizeBlock);
}
}];
}
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With