Question

I use dotnetOpenAuth. I want to request authorization to the user’s gamil.

Do I need to use openId first?

Cannot find a decent tutorail. Can anyone help?

Tried this code unsuccesfully. Anyway I don’t seems to ask for Gmail scope at the auth request, so I’m confused

public void PrepareAuthorizationRequest(Uri authCallbakUrl)
{
    var consumer = new WebConsumer(GoogleConsumerConsts.ServiceDescription, mConsumerTokenManager);

    // request access
    consumer.Channel.Send(consumer.PrepareRequestUserAuthorization(authCallbakUrl, null, null));

    throw new NoRedirectToAuthPageException();
}

public ProcessAuthorizationRequestResponse ProcessAuthorizationRequest()
{
    ProcessAuthorizationRequestResponse response;
    // Process result from the service provider
    var consumer = new WebConsumer(GoogleConsumerConsts.ServiceDescription, mConsumerTokenManager);
    var accessTokenResponse = consumer.ProcessUserAuthorization();

    // If we didn't have an access token response, this wasn't called by the service provider
    if (accessTokenResponse == null)
        response = new ProcessAuthorizationRequestResponse
                       {
                           IsAuthorized = false
                       };
    else
    {
        // Extract the access token
       string accessToken = accessTokenResponse.AccessToken;
       response = new ProcessAuthorizationRequestResponse
        {
            IsAuthorized = true,
            Token = accessToken,
            Secret = mConsumerTokenManager.GetTokenSecret(accessToken)
        };
    }
    return response;
}

private string Test2()
{
    // Process result from linked in
    var google = new WebConsumer(GoogleConsumerConsts.ServiceDescription, mConsumerTokenManager);
  //  var accessToken = GetAccessTokenForUser();
    var accessToken = String.Empty;

    // Retrieve the user's profile information
    var endpoint = GoogleConsumerConsts.GetGmailFeedsEndpoint;// new MessageReceivingEndpoint("http://api.linkedin.com/v1/people/~", HttpDeliveryMethods.GetRequest);
    var request = google.PrepareAuthorizedRequest(endpoint, accessToken);
    var response = request.GetResponse();
    return (new StreamReader(response.GetResponseStream())).ReadToEnd();
}

Answer 1

No, you don’t need to use OpenID if you just want to access the user’s Gmail. OpenID is for when you want to authenticate the user. OAuth is for when you want to access the user’s data.

You need to include the scope parameter in your authorization request as described in this question: Adding scopes to OAuth 1.0 authorization request with DotNetOpenAuth.