Hi Nick, Thanks ...
GAE is doing the authentication. My GAE app has endpoints (i.e. urls like my.appspot.com/gcm/home) that can only be executed by an admin who is logged in. There is nothing special I have implemented to support this, I am just using Google's GAE infrastructure. So, in the past, all I needed to do from a client application was to call ClientLogin with a user/pass pair, which would return me a token which could then be sent as a Cookie in calls to the GAE endpoints. This worked very well! Now that ClientLogin has been disabled, I am looking for an alternative to it. I apparently need to use OAuth2, but there is no documentation that seems to match my use case, unhappily. Use cases seem to assume the use of various Google APIs, which I am not using. Thanks anyway. Julian On Mon, Aug 10, 2015 at 4:13 PM, Nick (Cloud Platform Support) < pay...@google.com> wrote: > Hi Julian, > > The example code given there might be dealing with the Drive API, but APIs > in this context are quite abstract, and you can easily substitute any > Google API. > > Reading back over your question, I'm not sure you've supplied enough > information for anybody to help answer. What exactly is doing the > authenticating? Is your endpoint a Cloud Endpoints > <https://cloud.google.com/appengine/docs/java/endpoints/> endpoint? It's > not really clear to me what is doing the authentication at your "endpoint". > Do you just mean that you've deployed with "login: admin"? > > At any rate, this forum, as mentioned, isn't meant for 1-on-1 technical > support, so I don't think you should continue to follow-up in this thread, > and should either improve the stackoverflow question to clarify exactly > what you're expecting to happen in technical language and specifics, or > else post a new question which does include that information. That will > enable people to help you better. > > Best wishes, > > Nick > > > > On Saturday, August 8, 2015 at 1:51:24 PM UTC-4, Julian Bunn wrote: >> >> Hi Jason, >> >> Yes: >> http://stackoverflow.com/questions/31816007/authentication-with-google-app-engine-service-using-googlecredential-with-a-serv >> >> The suggestion there involves the Google Drive API, which is not really >> helping me, as my GAE application does not use that API. >> >> Julian >> >> On Saturday, August 8, 2015 at 9:38:00 AM UTC-7, Jason Collins wrote: >>> >>> Julian, can you post your link to your SO question? >>> >>> >>> On Thursday, 6 August 2015 12:20:28 UTC-7, Julian Bunn wrote: >>>> >>>> Hi Nick, >>>> >>>> Many thanks - I had already posted on stackoverflow with no luck, so >>>> came here :-) I do have one reply now over there, which suggests using >>>> client secrets, so that is a good lead. Also your comments on the use of >>>> service account are well taken - it looks like that may be inappropriate. >>>> >>>> Thanks for the pointers to the documentation, which I'd already visited >>>> and read but ended up being confused - as is no doubt evident from my >>>> question :-) >>>> >>>> Julian >>>> >>>> On Wednesday, August 5, 2015 at 4:57:26 PM UTC-7, Nick (Cloud Platform >>>> Support) wrote: >>>>> >>>>> Hi Julian, >>>>> >>>>> You've produced an excellent post which would belong on >>>>> stackoverflow.com. Google Groups isn't the place to post specific >>>>> technical issues, as this forum is meant more for general discussion of >>>>> the >>>>> platform and services. >>>>> >>>>> I'll give you the advice before you post there that it seems you've >>>>> combined examples from different kinds of OAuth flow and this might be the >>>>> cause of your issues. I see that there's a variable "emailScope" - this is >>>>> a scope which a user would actually grant to your application, not one >>>>> which a service account could grant. >>>>> >>>>> The service account and its credentials are used to call APIs on >>>>> behalf of your application, although I don't think I've seen this pattern >>>>> before, where you want to call an endpoint on your own app using a service >>>>> account. As far as I know, service accounts have only been used to >>>>> authenticate with Google APIs, although I suppose it might be possible to >>>>> write an endpoint which correctly authenticates it. >>>>> >>>>> You could do some more reading on OAuth2 >>>>> <https://developers.google.com/identity/protocols/OAuth2>, OpenID >>>>> Connect >>>>> <https://developers.google.com/identity/protocols/OpenIDConnect?hl=en>, >>>>> Service Accounts >>>>> <https://developers.google.com/identity/protocols/OAuth2ServiceAccount>, >>>>> and the Google Identity Platform >>>>> <https://developers.google.com/identity/>, and try to repost your >>>>> question to stackoverflow.com. That would be the best action as there >>>>> are many more users there ready to help with a technical question. >>>>> >>>>> If you would like to open a thread in this forum discussing the >>>>> platform or services in more broad terms, starting a discussion that would >>>>> be useful for other users to join in to, feel free to do so. >>>>> >>>>> Have a great day! >>>>> >>>>> [1] http://www.stackoverflow.com/ >>>>> [2] http://www.serverfault.com/ >>>>> [3] http://code.google.com/p/google-appengine/issues/list >>>>> >>>>> On Wednesday, August 5, 2015 at 1:32:41 AM UTC-4, Julian Bunn wrote: >>>>>> >>>>>> I have a GAE application with an endpoint that requires >>>>>> authentication, which I need to call from an application (rather than >>>>>> from >>>>>> in a browser). I was using ClientLogin, but that is now obsolete, so I >>>>>> have >>>>>> set up a Service Account in the Google Console, and stored its keypair >>>>>> .p12 >>>>>> file so that I can use the OAuth methods as described in the >>>>>> documentation. >>>>>> >>>>>> Although the GoogleCredential builder successfully returns an >>>>>> authorization token, if I then use that token in an HTTP get call to the >>>>>> endpoint, the response is always the Google Login page. >>>>>> >>>>>> Why, if I use the token, does GAE not take my application call as >>>>>> authorized? Am I doing this all wrong or missing a step? >>>>>> >>>>>> Here is the code: >>>>>> >>>>>> String emailAddress = "xxxx...@developer.gserviceaccount.com"; >>>>>> JsonFactory JSON_FACTORY = JacksonFactory.getDefaultInstance(); >>>>>> String emailScope = "https://www.googleapis.com/auth/userinfo.email";; >>>>>> String keyFileName = "YYYYY.p12"; >>>>>> String baseURL = "http://ZZZZZ.appspot.com";; >>>>>> HttpTransport httpTransport; >>>>>> try { >>>>>> httpTransport = GoogleNetHttpTransport.newTrustedTransport(); >>>>>> >>>>>> File keyFile = new File(keyFileName); >>>>>> if(!keyFile.exists()) { >>>>>> System.err.println("Key file "+keyFileName+" missing"); >>>>>> System.exit(0); >>>>>> } >>>>>> >>>>>> GoogleCredential credential = new GoogleCredential.Builder() >>>>>> .setTransport(httpTransport) >>>>>> .setJsonFactory(JSON_FACTORY) >>>>>> .setServiceAccountId(emailAddress) >>>>>> .setServiceAccountScopes(Collections.singleton(emailScope)) >>>>>> .setServiceAccountPrivateKeyFromP12File(keyFile) >>>>>> .build(); >>>>>> >>>>>> boolean success = credential.refreshToken(); >>>>>> System.out.println("Access token refresh "+ success); >>>>>> >>>>>> String token = credential.getAccessToken(); >>>>>> >>>>>> System.out.println("Token "+token); >>>>>> >>>>>> String uri = "http://ZZZZZ.appspot.com/gcm/home";; >>>>>> >>>>>> System.out.println("uri: " + uri); >>>>>> >>>>>> HttpGet get = new HttpGet(uri); >>>>>> get.setHeader("Cookie", token); >>>>>> >>>>>> HttpClient client = new DefaultHttpClient(); >>>>>> HttpResponse response = client.execute(get); >>>>>> response.getEntity().writeTo(System.out); >>>>>> >>>>>> Typical output: >>>>>> >>>>>> Access token refresh true >>>>>> Token ya29.xQGG1kxxxxxxxxxxxxxxxxxxx >>>>>> uri: http://ZZZZZ.appspot.com/gcm/home >>>>>> >>>>>> <!DOCTYPE html> >>>>>> <html lang="en"> >>>>>> <head> >>>>>> <meta charset="utf-8"> >>>>>> <meta content="width=300, initial-scale=1" name="viewport"> >>>>>> <meta name="google-site-verification" >>>>>> content="LrdTUW9psUAMbh4Ia074-BPEVmcpBxF6Gwf0MSgQXZs"> >>>>>> <title>Sign in - Google Accounts</title> >>>>>> ..... >>>>>> >>>>>> -- > You received this message because you are subscribed to a topic in the > Google Groups "Google App Engine" group. > To unsubscribe from this topic, visit > https://groups.google.com/d/topic/google-appengine/rYKSUDTFWTI/unsubscribe > . > To unsubscribe from this group and all its topics, send an email to > google-appengine+unsubscr...@googlegroups.com. > To post to this group, send email to google-appengine@googlegroups.com. > Visit this group at http://groups.google.com/group/google-appengine. > To view this discussion on the web visit > https://groups.google.com/d/msgid/google-appengine/a1c82338-d11c-4192-b020-d7f3107e87f9%40googlegroups.com > <https://groups.google.com/d/msgid/google-appengine/a1c82338-d11c-4192-b020-d7f3107e87f9%40googlegroups.com?utm_medium=email&utm_source=footer> > . > > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. 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