Files.app: Treats HTTP_FORBIDDEN (403) as temporary error on authentication.

google_apis/gaia/oauth2_access_token_fetcher.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "google_apis/gaia/oauth2_access_token_fetcher.h"
 
 #include <algorithm>
 #include <string>
 #include <vector>
 
@@ skipping 111 matching lines @@
     const net::URLFetcher* source) {
   CHECK_EQ(GET_ACCESS_TOKEN_STARTED, state_);
   state_ = GET_ACCESS_TOKEN_DONE;
 
   URLRequestStatus status = source->GetStatus();
   if (!status.is_success()) {
     OnGetTokenFailure(CreateAuthError(status));
     return;
   }
 
+  // HTTP_FORBIDDEN (403) is treated as temporary error, because it may be
+  // '403 Rate Limit Exeeded.'
+  if (source->GetResponseCode() == net::HTTP_FORBIDDEN) {
+    OnGetTokenFailure(GoogleServiceAuthError(
+        GoogleServiceAuthError::SERVICE_UNAVAILABLE));
+    return;
+  }
+
+  // The other errors are treated as permanent error.
   if (source->GetResponseCode() != net::HTTP_OK) {
     OnGetTokenFailure(GoogleServiceAuthError(
         GoogleServiceAuthError::INVALID_GAIA_CREDENTIALS));
     return;
   }
 
   // The request was successfully fetched and it returned OK.
   // Parse out the access token and the expiration time.
   std::string access_token;
   int expires_in;
@@ skipping 72 matching lines @@
   std::string data;
   source->GetResponseAsString(&data);
   scoped_ptr<base::Value> value(base::JSONReader::Read(data));
   if (!value.get() || value->GetType() != base::Value::TYPE_DICTIONARY)
     return false;
 
   DictionaryValue* dict = static_cast<DictionaryValue*>(value.get());
   return dict->GetString(kAccessTokenKey, access_token) &&
       dict->GetInteger(kExpiresInKey, expires_in);
 }