private static UserInfoSettings SaveUserInfo(AuthenticationResult authResult)
{
var userInfo = new UserInfoSettings {
Expiration = authResult.ExpiresOn, UserPrincipalName = authResult.UserInfo.DisplayableId, AccessToken = authResult.AccessToken
};
userInfo.Save();
return(userInfo);
}
/// <summary>
/// Gets an access token in order to discover the onedrive for business endpoint of the authenticated user.
/// </summary>
/// <param name="appClientId">client application id</param>
/// <returns>An instance of AuthenticationResult with the access token</returns>
internal static async Task <IdentityModel.Clients.ActiveDirectory.AuthenticationResult> AuthenticateAdalUserForDiscoveryAsync(string appClientId)
{
var discoveryResourceUri = "https://api.office.com/discovery/";
_appClientId = appClientId;
IdentityModel.Clients.ActiveDirectory.AuthenticationResult userAuthnResult = await _azureAdContext.AcquireTokenAsync(discoveryResourceUri, appClientId, new Uri(DefaultRedirectUri), new IdentityModel.Clients.ActiveDirectory.PlatformParameters(PromptBehavior.Auto, true));
_userInfoSettings = SaveUserInfo(userAuthnResult);
return(userAuthnResult);
}
/// <summary>
/// Get a Microsoft Graph access token from Azure AD.
/// </summary>
/// <param name="refreshToken">Flag indicating if the token has to be redeem</param>
/// <returns>An oauth2 access token.</returns>
internal static async Task <string> AuthenticateAdalUserAsync(bool refreshToken = false)
{
if (_userInfoSettings == null && refreshToken == false)
{
_userInfoSettings = SaveUserInfo(await _azureAdContext.AcquireTokenAsync(_resourceUri, _appClientId, new Uri(DefaultRedirectUri), new IdentityModel.Clients.ActiveDirectory.PlatformParameters(PromptBehavior.RefreshSession, false)));
}
if (_userInfoSettings.Expiration <= DateTimeOffset.UtcNow.AddMinutes(5) || refreshToken == true)
{
_userInfoSettings = SaveUserInfo(await _azureAdContext.AcquireTokenSilentAsync(_resourceUri, _appClientId));
}
return(_userInfoSettings.AccessToken);
}
/// <summary>
/// Logout the current user
/// </summary>
/// <returns>success or failure</returns>
public override async Task LogoutAsync()
{
if (!IsInitialized)
{
throw new InvalidOperationException("Microsoft OneDrive not initialized.");
}
if (_accountProvider != null)
{
if (_accountProviderType == AccountProviderType.OnlineId || _accountProviderType == AccountProviderType.Msa)
{
await((MsaAuthenticationProvider)_accountProvider).SignOutAsync();
}
else if (_accountProviderType == AccountProviderType.Adal)
{
OneDriveAuthenticationHelper.AzureAdContext.TokenCache.Clear();
DiscoverySettings.Clear();
UserInfoSettings.Clear();
}
}
}
