static async Task <GraphInfo> GetCDAGraphInfo(HttpRequestMessage req, TraceWriter log)
{
GraphInfo cdaInfo = null;
try
{
// Using the passed in token from the mobile app (which will authenticate against the MSFT corp AD) - call the MS Graph to get user info
if (!req.Headers.Authorization.Scheme.Equals("bearer", StringComparison.OrdinalIgnoreCase) && !string.IsNullOrWhiteSpace(req.Headers.Authorization.Parameter))
{
return(null);
}
var token = req.Headers.Authorization.Parameter;
var graphReqMsg = new HttpRequestMessage(HttpMethod.Get, "https://graph.microsoft.com/v1.0/me");
graphReqMsg.Headers.Authorization = new AuthenticationHeaderValue("bearer", token);
var graphResponse = await httpClient.SendAsync(graphReqMsg);
cdaInfo = GraphInfo.FromJson(await graphResponse.Content.ReadAsStringAsync());
if (string.IsNullOrWhiteSpace(cdaInfo.UserPrincipalName))
{
return(null);
}
log.Info(cdaInfo.ToString());
}
catch (Exception ex)
{
log.Error("Graph HTTP call", ex);
return(null);
}
return(cdaInfo);
}