/// <summary>
/// Configures the application to use Azure AD with Power BI
/// </summary>
/// <param name="app">The OWIN app builder</param>
/// <param name="setOptions">The action to set the authenciation options</param>
/// <returns></returns>
/// <exception cref="ArgumentNullException"></exception>
public static IAppBuilder UsePowerBIAuthentication(this IAppBuilder app, Action<PowerBIAuthenticationOptions> setOptions)
{
if (setOptions == null)
{
throw new ArgumentNullException(nameof(setOptions));
}
var options = new PowerBIAuthenticationOptions();
setOptions(options);
return UsePowerBIAuthentication(app, options);
}
/// <summary>
/// Configures the application to use Azure AD with Power BI
/// </summary>
/// <param name="app">The OWIN app builder</param>
/// <param name="options">The autheentication options</param>
/// <returns>The OWIN app build</returns>
/// <exception cref="ArgumentNullException"></exception>
public static IAppBuilder UsePowerBIAuthentication(this IAppBuilder app, PowerBIAuthenticationOptions options)
{
if (options == null)
{
throw new ArgumentNullException(nameof(options));
}
ValidateOptions(options);
var openIdAuthOptions = new OpenIdConnectAuthenticationOptions
{
ClientId = options.ClientId,
ClientSecret = options.ClientSecret,
Authority = options.Authority,
TokenValidationParameters = new System.IdentityModel.Tokens.TokenValidationParameters
{
ValidIssuer = options.Issuer,
ValidateIssuer = options.ValidateIssuer
},
Notifications = new OpenIdConnectAuthenticationNotifications()
{
AuthorizationCodeReceived = (context) =>
{
OnAuthorizationCodeReceived(context, options);
return Task.FromResult(0);
},
AuthenticationFailed = (context) =>
{
var redirectUri = options.ErrorRedirectUri ?? new Uri("/", UriKind.Relative);
context.OwinContext.Response.Redirect(redirectUri.ToString());
context.HandleResponse();
return Task.FromResult(0);
}
}
};
app.UseOpenIdConnectAuthentication(openIdAuthOptions);
ConfigureTokenManager();
return app;
}
private static void ValidateOptions(PowerBIAuthenticationOptions options)
{
if (string.IsNullOrEmpty(options.ClientId))
{
throw new InvalidOperationException("ClientID is not set");
}
if (string.IsNullOrEmpty(options.ClientSecret))
{
throw new InvalidOperationException("ClientSecret is not set");
}
if (options.ValidateIssuer && string.IsNullOrWhiteSpace(options.Issuer))
{
throw new InvalidOperationException("Issuer is not set");
}
if (string.IsNullOrWhiteSpace(options.Authority))
{
throw new InvalidOperationException("Authority is not set");
}
if (string.IsNullOrWhiteSpace(options.Resource))
{
throw new InvalidOperationException("Resource is not set");
}
if (options.SuccessRedirectUri == null)
{
throw new InvalidOperationException("SuccessRedirectUri is not set");
}
}
private static void OnAuthorizationCodeReceived(AuthorizationCodeReceivedNotification context, PowerBIAuthenticationOptions options)
{
var code = context.Code;
var credential = new ClientCredential(options.ClientId, options.ClientSecret);
var tenantId = context.AuthenticationTicket.Identity.FindFirst("http://schemas.microsoft.com/identity/claims/tenantid").Value;
var signedInUserId = context.AuthenticationTicket.Identity.FindFirst(ClaimTypes.NameIdentifier).Value;
var authContext = new AuthenticationContext($"https://login.microsoftonline.com/{tenantId}", new TokenCache(Encoding.Default.GetBytes(signedInUserId)));
var result = authContext.AcquireTokenByAuthorizationCode(code, options.SuccessRedirectUri, credential, options.Resource);
TokenManager.Current.WriteToken(context.AuthenticationTicket.Identity, result.AccessToken);
}
