private async void RefreshTokenButton_Click(object sender, EventArgs e)
{
if (string.IsNullOrEmpty(RefreshTokenTextBox.Text))
{
MessageBox.Show("You need to enter a refresh token first in the refresh token field in order to be able to retrieve a new access token based on a refresh token.", "OneDrive API", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
return;
}
// Get a new access token based on the refresh token entered in the textbox
OneDriveApi = await OneDriveApi.GetOneDriveApiFromRefreshToken(ClientId, ClientSecret, RefreshTokenTextBox.Text);
if (OneDriveApi.AccessToken != null)
{
// Display the information of the new access token in the textboxes
AccessTokenTextBox.Text = OneDriveApi.AccessToken.AccessToken;
RefreshTokenTextBox.Text = OneDriveApi.AccessToken.RefreshToken;
AccessTokenValidTextBox.Text = OneDriveApi.AccessTokenValidUntil.HasValue ? OneDriveApi.AccessTokenValidUntil.Value.ToString("dd-MM-yyyy HH:mm:ss") : "Not valid";
}
}
/// <summary>
/// Returns an active OneDriveApi instance. If a RefreshToken is available, it will set up an instance based on that, otherwise it will show the login dialog
/// </summary>
/// <param name="databaseConfig">Configuration of the KeePass database</param>
/// <param name="oneDriveClientId">ClientID to get access to OneDrive</param>
/// <param name="oneDriveClientSecret">ClientSecret to get access to OneDrive</param>
/// <returns>Active OneDrive instance or NULL if unable to get an authenticated instance</returns>
public static async Task <OneDriveApi> GetOneDriveApi(Configuration databaseConfig, string oneDriveClientId, string oneDriveClientSecret)
{
if (string.IsNullOrEmpty(databaseConfig.RefreshToken))
{
var oneDriveAuthenticateForm = new OneDriveAuthenticateForm(oneDriveClientId, oneDriveClientSecret);
var result = oneDriveAuthenticateForm.ShowDialog();
if (result != DialogResult.OK)
{
return(null);
}
// Check if we already know where to store the Refresh Token for this database
if (!databaseConfig.RefreshTokenStorage.HasValue)
{
// We don't know yet where the Refresh Token for this database should be stored, ask the user to choose
var oneDriveRefreshTokenStorageForm = new OneDriveRefreshTokenStorageDialog(databaseConfig);
oneDriveRefreshTokenStorageForm.ShowDialog();
}
// Save the configuration so we keep the Refresh Token
var oneDriveApi = oneDriveAuthenticateForm.OneDriveApi;
databaseConfig.RefreshToken = oneDriveApi.AccessToken.RefreshToken;
Configuration.Save();
return(oneDriveApi);
}
try
{
return(await OneDriveApi.GetOneDriveApiFromRefreshToken(oneDriveClientId, oneDriveClientSecret, databaseConfig.RefreshToken));
}
catch (WebException)
{
// Occurs if no connection can be made with the OneDrive service. It will be handled properly in the calling code.
return(null);
}
}