/// <summary>
/// Checks if the sample is configured for using ClientSecret or Certificate. This method is just for the sake of this sample.
/// You won't need this verification in your production application since you will be authenticating in AAD using one mechanism only.
/// </summary>
/// <param name="config">Configuration from appsettings.json</param>
/// <returns></returns>
public static bool AppUsesClientSecret(AuthenticationConfig config)
{
string clientSecretPlaceholderValue = "[Enter here a client secret for your application]";
string certificatePlaceholderValue = "[Or instead of client secret: Enter here the name of a certificate (from the user cert store) as registered with your application]";
if (!String.IsNullOrWhiteSpace(config.ClientSecret) && config.ClientSecret != clientSecretPlaceholderValue)
{
return(true);
}
else if (!String.IsNullOrWhiteSpace(config.CertificateName) && config.CertificateName != certificatePlaceholderValue)
{
return(false);
}
else
{
throw new Exception("You must choose between using client secret or certificate. Please update appsettings.json file.");
}
}
public static async Task <JsonResult> GraphApiCheckUserInSharePointList()
{
AuthenticationConfig config = AuthenticationConfig.ReadFromJsonFile("appsettings.json");
// You can run this sample using ClientSecret or Certificate. The code will differ only when instantiating the IConfidentialClientApplication
bool isUsingClientSecret = AppUsesClientSecret(config);
// Even if this is a console application here, a daemon application is a confidential client application
IConfidentialClientApplication app;
if (isUsingClientSecret)
{
app = ConfidentialClientApplicationBuilder.Create(config.ClientId)
.WithClientSecret(config.ClientSecret)
.WithAuthority(new Uri(config.Authority))
.Build();
}
else
{
X509Certificate2 certificate = ReadCertificate(config.CertificateName);
app = ConfidentialClientApplicationBuilder.Create(config.ClientId)
.WithCertificate(certificate)
.WithAuthority(new Uri(config.Authority))
.Build();
}
// With client credentials flows the scopes is ALWAYS of the shape "resource/.default", as the
// application permissions need to be set statically (in the portal or by PowerShell), and then granted by
// a tenant administrator.
string[] scopes = new string[] { $"{config.ApiUrl}.default" };
AuthenticationResult result = null;
try
{
result = await app.AcquireTokenForClient(scopes)
.ExecuteAsync();
Console.ForegroundColor = ConsoleColor.Green;
Console.WriteLine("Token acquired");
Console.ResetColor();
}
catch (MsalServiceException ex) when(ex.Message.Contains("AADSTS70011"))
{
// Invalid scope. The scope has to be of the form "https://resourceurl/.default"
// Mitigation: change the scope to be as expected
Console.ForegroundColor = ConsoleColor.Red;
Console.WriteLine("Scope provided is not supported");
Console.ResetColor();
}
if (result != null)
{
var httpClient = new HttpClient();
var apiCaller = new APIHelper(httpClient);
var response = await apiCaller.CallWebApiAndProcessResultASync($"{config.ApiUrl}v1.0/{config.EventInfoURL}", result.AccessToken, Display);
return(response);
// await apiCaller.CallWebApiAndProcessResultASync($"{config.ApiUrl}v1.0/users", result.AccessToken, Display);
}
return(null);
}
