/// <summary>
/// Checks if the used ClientContext is app-only
/// </summary>
/// <param name="clientContext">The ClientContext to inspect</param>
/// <returns>True if app-only, false otherwise</returns>
public static bool IsAppOnly(this ClientRuntimeContext clientContext)
{
// Set initial result to false
var result = false;
// Try to get an access token from the current context
var accessToken = clientContext.GetAccessToken();
// If any
if (!String.IsNullOrEmpty(accessToken))
{
// Try to decode the access token
var token = new JwtSecurityToken(accessToken);
// Search for the UPN claim, to see if we have user's delegation
var upn = token.Claims.FirstOrDefault(claim => claim.Type == "upn")?.Value;
if (String.IsNullOrEmpty(upn))
{
result = true;
}
}
else if (clientContext.Credentials == null)
{
result = true;
}
// As a final check, do we have the auth cookies?
if (clientContext.HasAuthCookies())
{
result = false;
}
return(result);
}
/// <summary>
/// Checks if the used ClientContext is app-only
/// </summary>
/// <param name="clientContext">The ClientContext to inspect</param>
/// <returns>True if app-only, false otherwise</returns>
public static bool IsAppOnlyWithDelegation(this ClientRuntimeContext clientContext)
{
// Set initial result to false
var result = false;
// Try to get an access token from the current context
var accessToken = clientContext.GetAccessToken();
// If any
if (!String.IsNullOrEmpty(accessToken))
{
// Try to decode the access token
try
{
var token = new JwtSecurityToken(accessToken);
if (token.Audiences.Any(x => x.StartsWith(TokenHelper.SharePointPrincipal)))
{
}
// Search for the UPN claim, to see if we have user's delegation
var upn = token.Claims.FirstOrDefault(claim => claim.Type == "upn")?.Value;
if (!String.IsNullOrEmpty(upn))
{
result = true;
}
}
catch (Exception ex)
{
throw new Exception("Maybe Newtonsoft.Json assembly is not loaded?", ex);
}
}
else if (clientContext.Credentials == null)
{
result = false;
}
// As a final check, do we have the auth cookies?
if (clientContext.HasAuthCookies())
{
result = false;
}
return(result);
}
