private static void AddMicrosoftIdentityWebAppInternal(
AuthenticationBuilder builder,
Action <MicrosoftIdentityOptions> configureMicrosoftIdentityOptions,
Action <CookieAuthenticationOptions>?configureCookieAuthenticationOptions,
string openIdConnectScheme,
string?cookieScheme,
bool subscribeToOpenIdConnectMiddlewareDiagnosticsEvents)
{
if (builder == null)
{
throw new ArgumentNullException(nameof(builder));
}
if (configureMicrosoftIdentityOptions == null)
{
throw new ArgumentNullException(nameof(configureMicrosoftIdentityOptions));
}
builder.Services.Configure(configureMicrosoftIdentityOptions);
builder.Services.AddHttpClient();
builder.Services.TryAddEnumerable(ServiceDescriptor.Singleton <IValidateOptions <MicrosoftIdentityOptions>, MicrosoftIdentityOptionsValidation>());
if (!string.IsNullOrEmpty(cookieScheme))
{
Action <CookieAuthenticationOptions> emptyOption = option => { };
builder.AddCookie(cookieScheme, configureCookieAuthenticationOptions ?? emptyOption);
}
builder.Services.TryAddSingleton <MicrosoftIdentityIssuerValidatorFactory>();
if (subscribeToOpenIdConnectMiddlewareDiagnosticsEvents)
{
builder.Services.AddSingleton <IOpenIdConnectMiddlewareDiagnostics, OpenIdConnectMiddlewareDiagnostics>();
}
if (AppServicesAuthenticationInformation.IsAppServicesAadAuthenticationEnabled)
{
builder.Services.AddAuthentication(AppServicesAuthenticationDefaults.AuthenticationScheme)
.AddAppServicesAuthentication();
return;
}
builder.AddOpenIdConnect(openIdConnectScheme, options => { });
builder.Services.AddOptions <OpenIdConnectOptions>(openIdConnectScheme)
.Configure <IServiceProvider, IOptions <MicrosoftIdentityOptions> >((options, serviceProvider, microsoftIdentityOptions) =>
{
PopulateOpenIdOptionsFromMicrosoftIdentityOptions(options, microsoftIdentityOptions.Value);
var b2cOidcHandlers = new AzureADB2COpenIDConnectEventHandlers(openIdConnectScheme, microsoftIdentityOptions.Value);
if (!string.IsNullOrEmpty(cookieScheme))
{
options.SignInScheme = cookieScheme;
}
if (string.IsNullOrWhiteSpace(options.Authority))
{
options.Authority = AuthorityHelpers.BuildAuthority(microsoftIdentityOptions.Value);
}
// This is a Microsoft identity platform web app
options.Authority = AuthorityHelpers.EnsureAuthorityIsV2(options.Authority);
// B2C doesn't have preferred_username claims
if (microsoftIdentityOptions.Value.IsB2C)
{
options.TokenValidationParameters.NameClaimType = ClaimConstants.Name;
}
else
{
options.TokenValidationParameters.NameClaimType = ClaimConstants.PreferredUserName;
}
// If the developer registered an IssuerValidator, do not overwrite it
if (options.TokenValidationParameters.ValidateIssuer && options.TokenValidationParameters.IssuerValidator == null)
{
// If you want to restrict the users that can sign-in to several organizations
// Set the tenant value in the appsettings.json file to 'organizations', and add the
// issuers you want to accept to options.TokenValidationParameters.ValidIssuers collection
MicrosoftIdentityIssuerValidatorFactory microsoftIdentityIssuerValidatorFactory =
serviceProvider.GetRequiredService <MicrosoftIdentityIssuerValidatorFactory>();
options.TokenValidationParameters.IssuerValidator =
microsoftIdentityIssuerValidatorFactory.GetAadIssuerValidator(options.Authority).Validate;
}
// Avoids having users being presented the select account dialog when they are already signed-in
// for instance when going through incremental consent
var redirectToIdpHandler = options.Events.OnRedirectToIdentityProvider;
options.Events.OnRedirectToIdentityProvider = async context =>
{
var login = context.Properties.GetParameter <string>(OpenIdConnectParameterNames.LoginHint);
if (!string.IsNullOrWhiteSpace(login))
{
context.ProtocolMessage.LoginHint = login;
// delete the login_hint from the Properties when we are done otherwise
// it will take up extra space in the cookie.
context.Properties.Parameters.Remove(OpenIdConnectParameterNames.LoginHint);
}
var domainHint = context.Properties.GetParameter <string>(OpenIdConnectParameterNames.DomainHint);
if (!string.IsNullOrWhiteSpace(domainHint))
{
context.ProtocolMessage.DomainHint = domainHint;
// delete the domain_hint from the Properties when we are done otherwise
// it will take up extra space in the cookie.
context.Properties.Parameters.Remove(OpenIdConnectParameterNames.DomainHint);
}
context.ProtocolMessage.SetParameter(Constants.ClientInfo, Constants.One);
context.ProtocolMessage.SetParameter(Constants.TelemetryHeaderKey, IdHelper.CreateTelemetryInfo());
// Additional claims
if (context.Properties.Items.ContainsKey(OidcConstants.AdditionalClaims))
{
context.ProtocolMessage.SetParameter(
OidcConstants.AdditionalClaims,
context.Properties.Items[OidcConstants.AdditionalClaims]);
}
if (microsoftIdentityOptions.Value.IsB2C)
{
// When a new Challenge is returned using any B2C user flow different than susi, we must change
// the ProtocolMessage.IssuerAddress to the desired user flow otherwise the redirect would use the susi user flow
await b2cOidcHandlers.OnRedirectToIdentityProvider(context).ConfigureAwait(false);
}
await redirectToIdpHandler(context).ConfigureAwait(false);
};
if (microsoftIdentityOptions.Value.IsB2C)
{
var remoteFailureHandler = options.Events.OnRemoteFailure;
options.Events.OnRemoteFailure = async context =>
{
// Handles the error when a user cancels an action on the Azure Active Directory B2C UI.
// Handle the error code that Azure Active Directory B2C throws when trying to reset a password from the login page
// because password reset is not supported by a "sign-up or sign-in user flow".
await b2cOidcHandlers.OnRemoteFailure(context).ConfigureAwait(false);
await remoteFailureHandler(context).ConfigureAwait(false);
};
}
if (subscribeToOpenIdConnectMiddlewareDiagnosticsEvents)
{
var diagnostics = serviceProvider.GetRequiredService <IOpenIdConnectMiddlewareDiagnostics>();
diagnostics.Subscribe(options.Events);
}
});
}
