public bool Authenticate(HttpRequestMessage request)
{
if (m_authFlow != AuthFlow.Obtained)
{
var host = GetHost(request.RequestUri.AbsoluteUri);
var authUriString = $"{host}/oauth2/token";
HttpClient authClient = new HttpClient();
HttpRequestMessage authReq = new HttpRequestMessage()
{
RequestUri = new Uri(authUriString),
Method = HttpMethod.Post
};
authReq.Headers.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
authReq.Headers.Add("ContentType", "application/x-www-form-urlencoded");
List <KeyValuePair <string, string> > authReqContent;
switch (m_authFlow)
{
case AuthFlow.ObtainAccessTokenPending:
authReqContent = new List <KeyValuePair <string, string> >
{
new KeyValuePair <string, string>("grant_type", "client_credentials"),
new KeyValuePair <string, string>("client_id", m_ClientId),
new KeyValuePair <string, string>("client_secret", m_ClientSecret)
};
break;
case AuthFlow.RefreshAccessTokenPending:
if (m_authData == null)
{
throw new Exception($"Wrong OAuth2 flow");
}
authReqContent = new List <KeyValuePair <string, string> >
{
new KeyValuePair <string, string>("grant_type", "refresh_token"),
new KeyValuePair <string, string>("refresh_token", m_authData.RefreshToken)
};
break;
default:
throw new Exception($"Wrong OAuth2 flow");
}
authReq.Content = new FormUrlEncodedContent(authReqContent);
var authResponse = authClient.SendAsync(authReq).Result;
if (authResponse.StatusCode == System.Net.HttpStatusCode.OK)
{
var content = authResponse.Content.ReadAsStringAsync().Result;
m_authData = OAuthData.Deserialize(content);
m_authFlow = AuthFlow.Obtained;
}
}
if (m_authData != null)
{
if (m_authData.HasError)
{
throw new Exception($"OAuth 2.0: Authentication error: {m_authData.Error}", new Exception(m_authData.ErrorDescription));
}
request.Headers.Add("Authorization", AuthorizationHeaderValue);
}
return(true);
}
protected override void AuthDataDeserializeImpl(string content)
{
m_authData = OAuthData.Deserialize(content);
}