[C#] Google.Apis.Drive werkt nietmet Service Accounts

[NicoJuicy]

Ik heb de volgende code:

C#:

string key = @"1ae295acc7cxxxxxx-privatekey.p12";

 private ServiceAccountCredential getCredential()
        {
            String serviceAccountEmail = "[e-mail]";
            byte[] file = System.IO.File.ReadAllBytes(key);
            var certificate = new X509Certificate2(file, "notasecret", X509KeyStorageFlags.Exportable);

            ServiceAccountCredential credential = new ServiceAccountCredential(
               new ServiceAccountCredential.Initializer(serviceAccountEmail)
               {
                   Scopes = new[] { DriveService.Scope.Drive }
               }.FromCertificate(certificate));

            return credential;

        }

public async Task<List<string>> getFileNames(string file_id = "0BwqjmHstKb9xQVM5Nzk5aV9jNGc")
        {

            var service = new DriveService(new BaseClientService.Initializer
                     {
                         HttpClientInitializer = getCredential(),
                         ApplicationName = "Drive-CMS" //,ApiKey = "AIzaSyCINts_9MUxxxxkiKykvpPFUs"
                     });


            //var t = service.Files.Get(file_id).Execute();//error 
            
            var list = await service.Files.List().ExecuteAsync(); //error! (zelfde)
          
            return list.Items.Select(dl => dl.Title).ToList();


        }

Telkens krijg ik de volgende foutmelding:

code:

[TokenResponseException: Error:"invalid_grant", Description:"", Uri:""]

Iemand ervaring met Google.Apis en Service Accounts (=public api ipv. OAuth Client tokens), die me op de juiste weg kan zetten? (permissies, scope en dergelijke lijken te kloppen, klok gesyncroniseerd met een NTP server)

Volgende documentatie had ik gevonden:

• YouTube: Google Drive SDK: Service accounts
• https://developers.google...te_a_drive_service_object (dotnet open aoth)
• https://developers.google...aaa_oauth#service_account (auth met Plus.Me account - hierop gebaseerd)

Voor de volledigheid, heb ik de errorlog meegeleverd

code:

Serverfout in toepassing /.

Error:"invalid_grant", Description:"", Uri:""

Beschrijving: Er is een onverwerkte uitzondering opgetreden tijdens het uitvoeren van de huidige webaanvraag. Raadpleeg de stacktracering voor meer informatie over deze fout en de oorsprong ervan in de code. 

Details van uitzondering: Google.Apis.Auth.OAuth2.Responses.TokenResponseException: Error:"invalid_grant", Description:"", Uri:""

Fout in bron: 


Regel 46:             //string url = t.DownloadUrl;
Regel 47:             
Regel 48:             var list = await service.Files.List().ExecuteAsync();
Regel 49:             //var list = service.Files.List().Execute();
Regel 50:             return list.Items.Select(dl => dl.Title).ToList();

Bronbestand: c:\Users\Nico\Documents\Visual Studio 2013\Projects\Sapico-Nuget\Sapico.CMS.Drive\Connector.cs    Regel: 48 

Stacktracering: 


[TokenResponseException: Error:"invalid_grant", Description:"", Uri:""]
   Microsoft.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) +193
   Microsoft.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccess(Task task) +100
   Microsoft.Runtime.CompilerServices.TaskAwaiter.ValidateEnd(Task task) +50
   Microsoft.Runtime.CompilerServices.ConfiguredTaskAwaiter.GetResult() +41
   Google.Apis.Requests.<ExecuteAsync>d__0.MoveNext() in c:\code\google.com\google-api-dotnet-client\default\Tools\Google.Apis.Release\bin\Debug\output\default\Src\GoogleApis\Apis\Requests\ClientServiceRequest.cs:126
   System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) +93
   System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) +52
   System.Runtime.CompilerServices.TaskAwaiter`1.GetResult() +24
   Sapico.CMS.Drive.<getFileNames>d__3.MoveNext() in c:\Users\Nico\Documents\Visual Studio 2013\Projects\Sapico-Nuget\Sapico.CMS.Drive\Connector.cs:48
   System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) +93
   System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) +52
   System.Runtime.CompilerServices.TaskAwaiter`1.GetResult() +24
   Drive.CMS.WebTest.Controllers.<Index>d__0.MoveNext() in c:\Users\Nico\Documents\Visual Studio 2013\Projects\Sapico-Nuget\Drive.CMS.WebTest\Controllers\HomeController.cs:17
   System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) +93
   System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) +52
   System.Runtime.CompilerServices.TaskAwaiter.GetResult() +21
   System.Threading.Tasks.TaskHelpersExtensions.ThrowIfFaulted(Task task) +61
   System.Web.Mvc.Async.TaskAsyncActionDescriptor.EndExecute(IAsyncResult asyncResult) +114
   System.Web.Mvc.Async.<>c__DisplayClass37.<BeginInvokeAsynchronousActionMethod>b__36(IAsyncResult asyncResult) +66
   System.Web.Mvc.Async.WrappedAsyncResult`1.CallEndDelegate(IAsyncResult asyncResult) +47
   System.Web.Mvc.Async.WrappedAsyncResultBase`1.End() +135
   System.Web.Mvc.Async.AsyncResultWrapper.End(IAsyncResult asyncResult, Object tag) +102
   System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeActionMethod(IAsyncResult asyncResult) +49
   System.Web.Mvc.Async.AsyncInvocationWithFilters.<InvokeActionMethodFilterAsynchronouslyRecursive>b__3f() +117
   System.Web.Mvc.Async.<>c__DisplayClass48.<InvokeActionMethodFilterAsynchronouslyRecursive>b__41() +323
   System.Web.Mvc.Async.<>c__DisplayClass33.<BeginInvokeActionMethodWithFilters>b__32(IAsyncResult asyncResult) +44
   System.Web.Mvc.Async.WrappedAsyncResult`1.CallEndDelegate(IAsyncResult asyncResult) +47
   System.Web.Mvc.Async.WrappedAsyncResultBase`1.End() +135
   System.Web.Mvc.Async.AsyncResultWrapper.End(IAsyncResult asyncResult, Object tag) +102
   System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeActionMethodWithFilters(IAsyncResult asyncResult) +50
   System.Web.Mvc.Async.<>c__DisplayClass2b.<BeginInvokeAction>b__1c() +72
   System.Web.Mvc.Async.<>c__DisplayClass21.<BeginInvokeAction>b__1e(IAsyncResult asyncResult) +185
   System.Web.Mvc.Async.WrappedAsyncResult`1.CallEndDelegate(IAsyncResult asyncResult) +42
   System.Web.Mvc.Async.WrappedAsyncResultBase`1.End() +132
   System.Web.Mvc.Async.AsyncResultWrapper.End(IAsyncResult asyncResult, Object tag) +56
   System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeAction(IAsyncResult asyncResult) +40
   System.Web.Mvc.Controller.<BeginExecuteCore>b__1d(IAsyncResult asyncResult, ExecuteCoreState innerState) +34
   System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult) +70
   System.Web.Mvc.Async.WrappedAsyncResultBase`1.End() +138
   System.Web.Mvc.Async.AsyncResultWrapper.End(IAsyncResult asyncResult, Object tag) +59
   System.Web.Mvc.Async.AsyncResultWrapper.End(IAsyncResult asyncResult, Object tag) +40
   System.Web.Mvc.Controller.EndExecuteCore(IAsyncResult asyncResult) +44
   System.Web.Mvc.Controller.<BeginExecute>b__15(IAsyncResult asyncResult, Controller controller) +39
   System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult) +62
   System.Web.Mvc.Async.WrappedAsyncResultBase`1.End() +138
   System.Web.Mvc.Async.AsyncResultWrapper.End(IAsyncResult asyncResult, Object tag) +59
   System.Web.Mvc.Async.AsyncResultWrapper.End(IAsyncResult asyncResult, Object tag) +40
   System.Web.Mvc.Controller.EndExecute(IAsyncResult asyncResult) +39
   System.Web.Mvc.Controller.System.Web.Mvc.Async.IAsyncController.EndExecute(IAsyncResult asyncResult) +39
   System.Web.Mvc.MvcHandler.<BeginProcessRequest>b__5(IAsyncResult asyncResult, ProcessRequestState innerState) +39
   System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult) +70
   System.Web.Mvc.Async.WrappedAsyncResultBase`1.End() +138
   System.Web.Mvc.Async.AsyncResultWrapper.End(IAsyncResult asyncResult, Object tag) +59
   System.Web.Mvc.Async.AsyncResultWrapper.End(IAsyncResult asyncResult, Object tag) +40
   System.Web.Mvc.MvcHandler.EndProcessRequest(IAsyncResult asyncResult) +40
   System.Web.Mvc.MvcHandler.System.Web.IHttpAsyncHandler.EndProcessRequest(IAsyncResult result) +38
   System.Web.CallHandlerExecutionStep.OnAsyncHandlerCompletion(IAsyncResult ar) +129

Versiegegevens: Microsoft .NET Framework Versie:4.0.30319; ASP.NET Versie:4.0.30319.34009

[ Voor 62% gewijzigd door NicoJuicy op 30-04-2014 23:55 ]

[NicoJuicy]

Niemand?

[diabolofan]

Hier wat aan?
http://stackoverflow.com/...-api-with-service-account