fixes a crash while requesting a bearer token from some wifi hotspots h…

…ttp://stackoverflow.com/questions/21136475/ios-app-crashing-when-false-connection-is-available
nst · Jan 22, 2014 · 54efe27 · 54efe27
1 parent 2489071
commit 54efe27
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diff --git a/STTwitter/STTwitterAppOnly.h b/STTwitter/STTwitterAppOnly.h
@@ -17,6 +17,7 @@
 
 NS_ENUM(NSUInteger, STTwitterAppOnlyErrorCode) {
     STTwitterAppOnlyCannotFindBearerTokenToBeInvalidated,
+    STTwitterAppOnlyCannotFindJSONInResponse,
     STTwitterAppOnlyCannotFindBearerTokenInResponse
 };
 

diff --git a/STTwitter/STTwitterAppOnly.m b/STTwitter/STTwitterAppOnly.m
@@ -120,6 +120,12 @@ - (void)verifyCredentialsWithSuccessBlock:(void(^)(NSString *username))successBl
  downloadProgressBlock:nil
           successBlock:^(id request, NSDictionary *requestHeaders, NSDictionary *responseHeaders, id json) {
 
+              if([json isKindOfClass:[NSDictionary class]] == NO) {
+                  NSError *error = [NSError errorWithDomain:NSStringFromClass([self class]) code:STTwitterAppOnlyCannotFindJSONInResponse userInfo:nil];
+                  errorBlock(error);
+                  return;
+              }
+
               NSString *tokenType = [json valueForKey:@"token_type"];
               if([tokenType isEqualToString:@"bearer"] == NO) {
                   NSError *error = [NSError errorWithDomain:NSStringFromClass([self class]) code:STTwitterAppOnlyCannotFindBearerTokenInResponse userInfo:@{NSLocalizedDescriptionKey : @"Cannot find bearer token in server response"}];