private ADAuthService()
{
AuthenticationResult = null;
authContext = new AuthenticationContext(ServiceConstants.AUTHORITY);
}
public async Task <AuthContainer> Authenticate(string resource, IPlatformParameters platformParameters)
{
Uri SPUri = new Uri(ServiceConstants.SHAREPOINTURL);
AuthenticationResult = new AuthContainer();
try
{
if (!string.IsNullOrEmpty(SPUri.Scheme) && !string.IsNullOrEmpty(SPUri.Host))
{
string spResourceId = SPUri.Scheme + "://" + SPUri.Host;
if (authContext != null && authContext.TokenCache.ReadItems().Any())
{
authContext = new AuthenticationContext(authContext.TokenCache.ReadItems().First().Authority);
}
else
{
authContext = new AuthenticationContext(ServiceConstants.AUTHORITY);
}
var authResult = await authContext.AcquireTokenAsync(resource, ServiceConstants.CLIENTID, ServiceConstants.RETURNURI, platformParameters);
if (null == authResult)
{
AuthenticationResult.ResultCode = AuthResultCode.Unknown;
}
else
{
AuthenticationResult.ResultCode = AuthResultCode.Success;
AuthenticationResult.AuthResult = authResult;
var expiry = DateTime.Parse(authResult.ExpiresOn.UtcDateTime.ToString("u"),
System.Globalization.CultureInfo.InvariantCulture);
//var sharePointResult = await authContext.AcquireTokenAsync(ServiceConstants.SHAREPOINTURL, ServiceConstants.CLIENTID, ServiceConstants.RETURNURI, platformParameters);
var sharePointResult = await authContext.AcquireTokenSilentAsync(spResourceId, ServiceConstants.CLIENTID, new UserIdentifier(authResult.UserInfo.UniqueId, UserIdentifierType.UniqueId));
AuthenticationResult.SharePointAccessToken = sharePointResult.AccessToken;
}
}
}
catch (AdalException adalEx)
{
AuthenticationResult.Message = adalEx.ErrorCode;
switch (adalEx.ErrorCode)
{
case "authentication_canceled":
AuthenticationResult.ResultCode = AuthResultCode.Canceled;
break;
case "access_denied":
AuthenticationResult.ResultCode = AuthResultCode.AccessDenied;
break;
case "failed_to_acquire_token_silently":
authContext = null;
authContext = new AuthenticationContext(ServiceConstants.AUTHORITY);
var res = await Authenticate(resource, platformParameters);
break;
default:
AuthenticationResult.ResultCode = AuthResultCode.Unknown;
break;
}
}
catch (Exception ex)
{
AuthenticationResult.ResultCode = AuthResultCode.Unknown;
AuthenticationResult.Message = ex.Message;
}
return(AuthenticationResult);
}
public async Task <AuthContainer> RenewToken(string resourceUri, string accessToken, IPlatformParameters param)
{
try
{
string siteUrl = ServiceConstants.SHAREPOINTURL;
Uri SPUri = new Uri(siteUrl);
string spResourceId = SPUri.Scheme + "://" + SPUri.Host;
AuthenticationResult = new AuthContainer();
//Pass old accessToken
var userAssertion = new UserAssertion(accessToken);
if (authContext == null)
{
authContext = new AuthenticationContext(ServiceConstants.AUTHORITY);
authResult = await authContext.AcquireTokenAsync(resourceUri, ServiceConstants.CLIENTID, ServiceConstants.RETURNURI, param, new UserIdentifier(ServiceConstants.UserEmail, UserIdentifierType.RequiredDisplayableId));
}
else
{
authResult = await authContext.AcquireTokenAsync(resourceUri, ServiceConstants.CLIENTID, userAssertion);
}
var userInfo = authResult.UserInfo;
var apiAccessToken = authResult.AccessToken;
var expiry = DateTime.Parse(authResult.ExpiresOn.UtcDateTime.ToString("u"),
System.Globalization.CultureInfo.InvariantCulture);
if (null == authResult)
{
AuthenticationResult.ResultCode = AuthResultCode.Unknown;
}
else
{
AuthenticationResult.ResultCode = AuthResultCode.Success;
AuthenticationResult.AuthResult = authResult;
var sharePointResult = await authContext.AcquireTokenSilentAsync(spResourceId, ServiceConstants.CLIENTID, new UserIdentifier(authResult.UserInfo.UniqueId, UserIdentifierType.UniqueId));
AuthenticationResult.SharePointAccessToken = sharePointResult.AccessToken;
}
}
catch (AdalException adalEx)
{
AuthenticationResult.Message = adalEx.ErrorCode;
switch (adalEx.ErrorCode)
{
case "authentication_canceled":
AuthenticationResult.ResultCode = AuthResultCode.Canceled;
break;
case "access_denied":
AuthenticationResult.ResultCode = AuthResultCode.AccessDenied;
break;
default:
AuthenticationResult.ResultCode = AuthResultCode.Unknown;
break;
}
authContext = null;
await RenewToken(resourceUri, accessToken, param);
}
catch (Exception ex)
{
AuthenticationResult.ResultCode = AuthResultCode.Unknown;
AuthenticationResult.Message = ex.Message;
}
return(AuthenticationResult);
}
