private static async Task <AppTokenResult> PostToTokenEndPoint(QueryStringBuilder queryBuilder)
{
HttpWebRequest request = WebRequest.CreateHttp(FormMicrosoftAccountAuth.OAuthMSATokenService);
request.Method = "POST";
request.ContentType = "application/x-www-form-urlencoded";
using (StreamWriter requestWriter = new StreamWriter(await request.GetRequestStreamAsync()))
{
await requestWriter.WriteAsync(queryBuilder.ToString());
await requestWriter.FlushAsync();
}
HttpWebResponse httpResponse;
try
{
var response = await request.GetResponseAsync();
httpResponse = response as HttpWebResponse;
}
catch (WebException webex)
{
httpResponse = webex.Response as HttpWebResponse;
}
catch (Exception)
{
return(null);
}
// TODO: better error handling
if (httpResponse == null)
{
return(null);
}
if (httpResponse.StatusCode != HttpStatusCode.OK)
{
httpResponse.Dispose();
return(null);
}
using (var responseBodyStreamReader = new StreamReader(httpResponse.GetResponseStream()))
{
var responseBody = await responseBodyStreamReader.ReadToEndAsync();
var tokenResult = Newtonsoft.Json.JsonConvert.DeserializeObject <AppTokenResult>(responseBody);
httpResponse.Dispose();
return(tokenResult);
}
}
public static async Task<AppTokenResult> RedeemRefreshTokenAsync(string clientId, string clientSecret, string refreshToken)
{
var queryBuilder = new QueryStringBuilder();
queryBuilder.Add("client_id", clientId);
queryBuilder.Add("redirect_uri", FormMicrosoftAccountAuth.OAuthDesktopEndPoint);
queryBuilder.Add("client_secret", clientSecret);
queryBuilder.Add("refresh_token", refreshToken);
queryBuilder.Add("grant_type", "refresh_token");
return await PostToTokenEndPoint(queryBuilder);
}
public static async Task<AppTokenResult> RedeemAuthorizationCodeAsync(string clientId, string redirectUrl, string clientSecret, string authCode)
{
QueryStringBuilder queryBuilder = new QueryStringBuilder();
queryBuilder.Add("client_id", clientId);
queryBuilder.Add("redirect_uri", redirectUrl);
queryBuilder.Add("client_secret", clientSecret);
queryBuilder.Add("code", authCode);
queryBuilder.Add("grant_type", "authorization_code");
return await PostToTokenEndPoint(queryBuilder);
}
public static async Task <AppTokenResult> RedeemRefreshTokenAsync(string clientId, string clientSecret, string refreshToken)
{
var queryBuilder = new QueryStringBuilder();
queryBuilder.Add("client_id", clientId);
queryBuilder.Add("redirect_uri", FormMicrosoftAccountAuth.OAuthDesktopEndPoint);
queryBuilder.Add("client_secret", clientSecret);
queryBuilder.Add("refresh_token", refreshToken);
queryBuilder.Add("grant_type", "refresh_token");
return(await PostToTokenEndPoint(queryBuilder));
}
private static async Task <AppTokenResult> RedeemAuthorizationCodeAsync(string clientId, string redirectUrl, string clientSecret, string authCode)
{
QueryStringBuilder queryBuilder = new QueryStringBuilder();
queryBuilder.Add("client_id", clientId);
queryBuilder.Add("redirect_uri", redirectUrl);
queryBuilder.Add("client_secret", clientSecret);
queryBuilder.Add("code", authCode);
queryBuilder.Add("grant_type", "authorization_code");
return(await PostToTokenEndPoint(queryBuilder));
}
private static async Task<AppTokenResult> PostToTokenEndPoint(QueryStringBuilder queryBuilder)
{
HttpWebRequest request = WebRequest.CreateHttp(FormMicrosoftAccountAuth.OAuthMSATokenService);
request.Method = "POST";
request.ContentType = "application/x-www-form-urlencoded";
using (StreamWriter requestWriter = new StreamWriter(await request.GetRequestStreamAsync()))
{
await requestWriter.WriteAsync(queryBuilder.ToString());
await requestWriter.FlushAsync();
}
HttpWebResponse httpResponse;
try
{
var response = await request.GetResponseAsync();
httpResponse = response as HttpWebResponse;
}
catch (WebException webex)
{
httpResponse = webex.Response as HttpWebResponse;
}
catch (Exception)
{
return null;
}
// TODO: better error handling
if (httpResponse == null)
return null;
if (httpResponse.StatusCode != HttpStatusCode.OK)
{
httpResponse.Dispose();
return null;
}
using (var responseBodyStreamReader = new StreamReader(httpResponse.GetResponseStream()))
{
var responseBody = await responseBodyStreamReader.ReadToEndAsync();
var tokenResult = Newtonsoft.Json.JsonConvert.DeserializeObject<AppTokenResult>(responseBody);
httpResponse.Dispose();
return tokenResult;
}
}
