Hi,

I'm using an android library to get the access token using explicit
authentication.

API: https://github.com/wuman/android-oauth-client

This API is build on top of google API:
https://github.com/google/google-oauth-java-client

The authorization token is being retrieved correctly. The problem is when I
try to exchange it for an access_token.

Here is my request using the API:

AuthorizationFlow flow = new AuthorizationFlow.Builder(
//BearerToken.authorizationHeaderAccessMethod(),
//BearerToken.queryParameterAccessMethod(),
BearerToken.formEncodedBodyAccessMethod(),
OAuth.HTTP_TRANSPORT,
OAuth.JSON_FACTORY,
new GenericUrl(LoginConstants.TOKEN_SERVER_URL),
new BasicAuthentication(LoginConstants.CLIENT_ID,
LoginConstants.CLIENT_SECRET),
LoginConstants.CLIENT_ID,
LoginConstants.AUTHORIZATION_CODE_SERVER_URL)
.setScopes(Lists.<String> newArrayList())
.setCredentialStore(credentialStore)
.build();

DocString:
/**

• @param method method of presenting the access token to the resource
• server (for example
• {@link BearerToken#authorizationHeaderAccessMethod}

  )

• @param transport HTTP transport
• @param jsonFactory JSON factory
• @param tokenServerUrl token server URL
• @param clientAuthentication client authentication or {@code null}

  for

• none (see
• {@link TokenRequest#setClientAuthentication(HttpExecuteInterceptor)}
• )
• @param clientId client identifier
• @param authorizationServerEncodedUrl authorization server encoded URL
  */
  public Builder(AccessMethod method,
  HttpTransport transport,
  JsonFactory jsonFactory,
  GenericUrl tokenServerUrl,
  HttpExecuteInterceptor clientAuthentication,
  String clientId,
  String authorizationServerEncodedUrl)

I've been able to Intercept the Request and Response, and this is the
result:

Request:

*Request getUrl: *https://account.lab.fiware.org/oauth2/token
Request getRequestMethod: POST
Request getHeaders:

Request getContent:
code=QqU5dSHksT13hyb5yUMqZLGpge5S1f&grant_type=authorization_code&redirect_uri=http%3A%2F%2Flocalhost%2FCallback&scope
Request getTransport:
com.google.api.client.http.javanet.NetHttpTransport@1182878e
Request getResponseHeaders:

Response:

*Response getStatusCode: *400
Response getStatusMessage: Bad Request
Response getHeaders:

Response getMediaType: application/json
Response getTransport:
com.google.api.client.http.javanet.NetHttpTransport@1182878e
Response getContentType: application/json
Response getContent:

IMPORTANT: I AM able to get the access token by using Chrome's REST client
with the
SAME Request getContent given above and the *SAME **Authorization: Basic
XXX* also given above, so they are correct.
I've tried to had Content-Type: application/x-www-form-urlencoded to the
request, but the error resulting was the same.
I AM able to use this API with another Identity Management Servers, like
foursquare.

Having no information on the error response and sending exactly what you
define in:

https://github.com/ging/fi-ware-idm/wiki/Using-the-FIWARE-LAB-instance

It Becomes hard to solve it from my side. I've tried giving you every
information I have, but If you require more, please ask.

–

[image: Inline image 1]

Pedro GonçalvesResearch Software EngineerPLUX - Wireless Biosignals, S.A.
Headquarters

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W: www.plux.info

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