internal static string AcquireToken(string resource, string scope = null)
{
GenericToken token = null;
if (PnPConnection.CurrentConnection == null)
{
return(null);
}
var tenantId = TenantExtensions.GetTenantIdByUrl(PnPConnection.CurrentConnection.Url);
if (PnPConnection.CurrentConnection.PSCredential != null)
{
if (scope == null)
{
// SharePoint or Graph V1 resource
var scopes = new[] { $"https://{resource}//.default" };
token = GenericToken.AcquireDelegatedTokenWithCredentials(PnPConnection.PnPManagementShellClientId, scopes, "https://login.microsoftonline.com/organizations/", PnPConnection.CurrentConnection.PSCredential.UserName, PnPConnection.CurrentConnection.PSCredential.Password);
}
else
{
token = GenericToken.AcquireDelegatedTokenWithCredentials(PnPConnection.PnPManagementShellClientId, new[] { scope }, "https://login.microsoftonline.com/organizations/", PnPConnection.CurrentConnection.PSCredential.UserName, PnPConnection.CurrentConnection.PSCredential.Password);
}
}
else if (!string.IsNullOrEmpty(PnPConnection.CurrentConnection.ClientId) && !string.IsNullOrEmpty(PnPConnection.CurrentConnection.ClientSecret))
{
var clientId = PnPConnection.CurrentConnection.ClientId;
var clientSecret = HttpUtility.UrlEncode(PnPConnection.CurrentConnection.ClientSecret);
if (scope == null && !resource.Equals("graph.microsoft.com", System.StringComparison.OrdinalIgnoreCase))
{
// SharePoint token
var scopes = new[] { $"https://{resource}//.default" };
token = GenericToken.AcquireApplicationToken(tenantId, clientId, "https://login.microsoftonline/organizations/", scopes, clientSecret);
}
else
{
token = GenericToken.AcquireApplicationToken(tenantId, clientId, "https://login.microsoftonline.com/organizations/", new[] { scope }, clientSecret);
}
}
if (token != null)
{
return(token.AccessToken);
}
return(null);
}