/// <summary>
/// Function for getting a token from ACS using Application Service principal Id and Password.
/// </summary>
public static AADJWTToken GetAuthorizationToken(string tenantName, string appPrincipalId, string password)
{
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(String.Format((string)StringConstants.AzureADSTSURL, tenantName));
System.Text.ASCIIEncoding encoding = new System.Text.ASCIIEncoding();
string postData = "grant_type=client_credentials";
postData += "&resource=" + HttpUtility.UrlEncode(StringConstants.GraphPrincipalId);
postData += "&client_id=" + HttpUtility.UrlEncode(appPrincipalId);
postData += "&client_secret=" + HttpUtility.UrlEncode(password);
byte[] data = encoding.GetBytes(postData);
request.Method = "POST";
request.ContentType = "application/x-www-form-urlencoded";
request.ContentLength = data.Length;
using (Stream stream = request.GetRequestStream())
{
stream.Write(data, 0, data.Length);
}
using (var response = request.GetResponse())
{
using (var stream = response.GetResponseStream())
{
DataContractJsonSerializer ser = new DataContractJsonSerializer(typeof(AADJWTToken));
AADJWTToken token = (AADJWTToken)(ser.ReadObject(stream));
return(token);
}
}
}
private void NewToken()
{
_token = DirectoryDataServiceAuthorizationHelper.GetAuthorizationToken(ConfigurationManager.AppSettings["TenantDomainName"],
ConfigurationManager.AppSettings["AppPrincipalId"], ConfigurationManager.AppSettings["Password"]);
}
public AdGraphClient()
{
_token = GetToken();
TenantGraphRoot = string.Format("https://graphstore.windows.net/{0}/", ConfigurationManager.AppSettings["TenantDomainName"]);
}
