private static void ConfigureExternalAuthenticationServices(AuthenticationBuilder authenticationBuilder, TenantsBuilder tenantsBuilder, IConfiguration configuration)
{
if (tenantsBuilder != null)
{
authenticationBuilder.AddOpenIdConnect(IdentityCoreConstants.ExternalOidcScheme, openIdConnect =>
{
// will be configured dynamically
openIdConnect.ClientId = "N/A";
openIdConnect.Authority = "https://nowhere.nowhere";
});
tenantsBuilder.WithPerTenantOptions <OpenIdConnectOptions>((openIdConnect, tenantInfo) =>
{
if (string.Equals(tenantInfo.ExternalAuthenticationMethod, TenantConstants.ExternalAuthenticationMethodOidc))
{
var oidcClientId = tenantInfo.OidcClientId;
var oidcClientSecret = tenantInfo.OidcClientSecret;
var oidcEndpointUrl = tenantInfo.OidcEndpointUrl;
openIdConnect.SignInScheme = IdentityServerConstants.ExternalCookieAuthenticationScheme;
openIdConnect.SignOutScheme = IdentityServerConstants.SignoutScheme;
openIdConnect.Authority = oidcEndpointUrl;
openIdConnect.ClientId = oidcClientId;
openIdConnect.ClientSecret = oidcClientSecret;
// make sure we get user group membership information
openIdConnect.GetClaimsFromUserInfoEndpoint = true;
openIdConnect.Scope.Add("openid");
openIdConnect.Scope.Add("email");
openIdConnect.Scope.Add("phone");
openIdConnect.Scope.Add("profile");
}
});
authenticationBuilder.AddSaml2(IdentityCoreConstants.ExternalSamlScheme, saml =>
{
// will be configured dynamically
});
tenantsBuilder.WithPerTenantOptions <Saml2Options>((saml, tenantInfo) =>
{
if (string.Equals(tenantInfo.ExternalAuthenticationMethod, TenantConstants.ExternalAuthenticationMethodSaml))
{
var samlEntityId = tenantInfo.SamlEntityId;
var samlMetadataLocation = tenantInfo.SamlMetadataLocation;
var samlProviderUrl = tenantInfo.SamlProviderUrl;
var samlCertificate = tenantInfo.SamlCertificate;
saml.SPOptions.EntityId = new EntityId(samlEntityId);
if (tenantInfo.SamlAllowWeakSigningAlgorithm)
{
// OK this is less secure, but sometimes we're having trouble
// e.g. with SSO Circle that still uses SHA1
saml.SPOptions.MinIncomingSigningAlgorithm = "http://www.w3.org/2000/09/xmldsig#rsa-sha1";
}
saml.IdentityProviders.Add(
new IdentityProvider(new EntityId(samlProviderUrl), saml.SPOptions)
{
LoadMetadata = true,
MetadataLocation = samlMetadataLocation
}
);
if (samlCertificate != null)
{
saml.SPOptions.ServiceCertificates.Add(new ServiceCertificate()
{
Certificate = samlCertificate,
Use = CertificateUse.Signing
});
}
saml.SignInScheme = IdentityServerConstants.ExternalCookieAuthenticationScheme;
saml.SignOutScheme = IdentityServerConstants.SignoutScheme;
}
});
}
}
private static void ConfigureJwtAuthentication(IServiceCollection services, TenantsBuilder tenantsBuilder, IConfiguration configuration)
{
var authenticationBuilder = services.AddAuthentication();
JwtSecurityTokenHandler.DefaultInboundClaimTypeMap.Clear();
string[] requiredScopesSplit = null;
string requiredScopes = configuration["Identity:Jwt:RequiredScopes"];
if (!string.IsNullOrEmpty(requiredScopes))
{
requiredScopesSplit = requiredScopes.Split(new[] { ';' }, StringSplitOptions.RemoveEmptyEntries);
if (requiredScopesSplit.Length == 0)
{
requiredScopesSplit = null;
}
}
if (tenantsBuilder == null)
{
string defaultClientAuthority = configuration[$"Identity:DefaultClient:Authority"];
if (string.IsNullOrEmpty(defaultClientAuthority))
{
throw new Exception("Identity default client authority string is empty");
}
string defaultClientAudience = configuration[$"Identity:DefaultClient:Audience"];
if (string.IsNullOrEmpty(defaultClientAudience))
{
throw new Exception("Identity default client audience string is empty");
}
authenticationBuilder.AddJwtBearer(IdentityCoreConstants.JwtScheme, jwt =>
{
jwt.RequireHttpsMetadata = true;
jwt.Authority = defaultClientAuthority;
jwt.Audience = defaultClientAudience;
jwt.TokenValidationParameters = new TokenValidationParameters()
{
ClockSkew = TimeSpan.FromMinutes(5),
RequireSignedTokens = true,
RequireExpirationTime = true,
ValidateLifetime = true,
// audience validation will be done via scope, as recommended in
// https://github.com/IdentityServer/IdentityServer4/issues/127
ValidateAudience = false,
ValidateIssuer = true,
ValidIssuer = defaultClientAuthority
};
});
services.AddAuthorization(options =>
{
options.AddPolicy(IdentityCoreConstants.JwtPolicy, policy =>
{
policy.AuthenticationSchemes.Add(IdentityCoreConstants.JwtScheme);
if (requiredScopesSplit != null)
{
policy.RequireAssertion(handler =>
{
return(CheckScopes(handler.User, requiredScopesSplit));
});
}
policy.RequireAuthenticatedUser();
});
});
}
else
{
authenticationBuilder.AddJwtBearer(IdentityCoreConstants.JwtScheme, jwt =>
{
jwt.RequireHttpsMetadata = true;
});
tenantsBuilder.WithPerTenantOptions <JwtBearerOptions>((jwt, tenantInfo) =>
{
jwt.Authority = tenantInfo.DeveloperAuthority;
jwt.Audience = tenantInfo.DeveloperAudience;
var tokenValidationParameters = new TokenValidationParameters()
{
ClockSkew = TimeSpan.FromMinutes(5),
RequireSignedTokens = true,
RequireExpirationTime = true,
ValidateLifetime = true,
// audience validation will be done via scope, as recommended in
// https://github.com/IdentityServer/IdentityServer4/issues/127
ValidateAudience = false,
ValidateIssuer = true,
ValidIssuer = tenantInfo.DeveloperAuthority
};
if (tenantInfo.DeveloperCertificate != null)
{
// if we cannot resolve it from some discovery endpoint
tokenValidationParameters.IssuerSigningKey = new X509SecurityKey(tenantInfo.DeveloperCertificate);
}
jwt.TokenValidationParameters = tokenValidationParameters;
});
ConfigureExternalAuthenticationServices(authenticationBuilder, tenantsBuilder, configuration);
services.AddAuthorization(options =>
{
options.AddPolicy(IdentityCoreConstants.JwtPolicy, policy =>
{
policy.AuthenticationSchemes.Add(IdentityCoreConstants.JwtScheme);
policy.Requirements.Add(new ClientDeveloperUuidRequirement());
if (requiredScopesSplit != null)
{
policy.RequireAssertion(handler =>
{
return(CheckScopes(handler.User, requiredScopesSplit));
});
}
policy.RequireAuthenticatedUser();
});
});
services.AddSingleton <IAuthorizationHandler, ClientDeveloperUuidRequirementHandler>();
}
}
