protected AbstractMetadataProvider idpMetadataProvider(ParserPool parserPool) {
AbstractMetadataProvider idpMetadataProvider;
try {
if (idpMetadataPath != null) {
Resource resource = null;
if (this.idpMetadataPath.startsWith(CommonHelper.RESOURCE_PREFIX)) {
String path = this.idpMetadataPath.substring(CommonHelper.RESOURCE_PREFIX.length());
if (!path.startsWith("/")) {
path = "/" + path;
}
resource = new ClasspathResource(path);
} else {
resource = new FilesystemResource(this.idpMetadataPath);
}
idpMetadataProvider = new ResourceBackedMetadataProvider(new Timer(true), resource);
} else {
InputStream in = new ByteArrayInputStream(idpMetadata.getBytes());
Document inCommonMDDoc = parserPool.parse(in);
Element metadataRoot = inCommonMDDoc.getDocumentElement();
idpMetadataProvider = new DOMMetadataProvider(metadataRoot);
}
idpMetadataProvider.setParserPool(parserPool);
idpMetadataProvider.initialize();
} catch (MetadataProviderException e) {
throw new SamlException("Error initializing idpMetadataProvider", e);
} catch (XMLParserException e) {
throw new TechnicalException("Error parsing idp Metadata", e);
} catch (ResourceException e) {
throw new TechnicalException("Error getting idp Metadata resource", e);
}
return idpMetadataProvider;
}
protected XMLObject getXmlObject(AbstractMetadataProvider idpMetadataProvider) {
try {
return idpMetadataProvider.getMetadata();
} catch (MetadataProviderException e) {
throw new SamlException("Error initializing idpMetadataProvider", e);
}
}
@Override
protected void internalInit() {
CommonHelper.assertTrue(
CommonHelper.isNotBlank(this.idpMetadata) || CommonHelper.isNotBlank(this.idpMetadataPath),
"Either idpMetadata or idpMetadataPath must be provided");
CommonHelper.assertNotBlank("callbackUrl", this.callbackUrl);
if (!this.callbackUrl.startsWith("http")) {
throw new TechnicalException("SAML callbackUrl must be absolute");
}
if (CommonHelper.isNotBlank(this.keystorePath)
|| CommonHelper.isNotBlank(this.keystorePassword)
|| CommonHelper.isNotBlank(this.privateKeyPassword)) {
CommonHelper.assertNotBlank("keystorePath", this.keystorePath);
CommonHelper.assertNotBlank("keystorePassword", this.keystorePassword);
CommonHelper.assertNotBlank("privateKeyPassword", this.privateKeyPassword);
// load private key from the keystore and provide it as OpenSAML credentials
this.credentialProvider =
new CredentialProvider(this.keystorePath, this.keystorePassword, this.privateKeyPassword);
this.decrypter = new EncryptionProvider(this.credentialProvider).buildDecrypter();
}
// Bootsrap OpenSAML
try {
DefaultBootstrap.bootstrap();
NamedKeyInfoGeneratorManager manager =
Configuration.getGlobalSecurityConfiguration().getKeyInfoGeneratorManager();
X509KeyInfoGeneratorFactory generator = new X509KeyInfoGeneratorFactory();
generator.setEmitEntityCertificate(true);
generator.setEmitEntityCertificateChain(true);
manager.registerFactory(Saml2Client.SAML_METADATA_KEY_INFO_GENERATOR, generator);
} catch (ConfigurationException e) {
throw new SamlException("Error bootstrapping OpenSAML", e);
}
// required parserPool for XML processing
final StaticBasicParserPool parserPool = newStaticBasicParserPool();
final AbstractMetadataProvider idpMetadataProvider = idpMetadataProvider(parserPool);
final XMLObject md;
try {
md = idpMetadataProvider.getMetadata();
} catch (MetadataProviderException e) {
throw new SamlException("Error initializing idpMetadataProvider", e);
}
// If no idpEntityId declared, select first EntityDescriptor entityId as our IDP entityId
if (this.idpEntityId == null) {
this.idpEntityId = getIdpEntityId(md);
}
// Generate our Service Provider metadata
Saml2MetadataGenerator metadataGenerator = new Saml2MetadataGenerator();
if (this.credentialProvider != null) {
metadataGenerator.setCredentialProvider(this.credentialProvider);
metadataGenerator.setAuthnRequestSigned(true);
}
// If the spEntityId is blank, use the callback url
if (CommonHelper.isBlank(this.spEntityId)) {
this.spEntityId = getCallbackUrl();
}
metadataGenerator.setEntityId(this.spEntityId);
// Assertion consumer service url is the callback url
metadataGenerator.setAssertionConsumerServiceUrl(getCallbackUrl());
// for now same for logout url
metadataGenerator.setSingleLogoutServiceUrl(getCallbackUrl());
AbstractMetadataProvider spMetadataProvider = metadataGenerator.buildMetadataProvider();
// Initialize metadata provider for our SP and get the XML as a String
try {
spMetadataProvider.initialize();
this.spMetadata = metadataGenerator.printMetadata();
} catch (MetadataProviderException e) {
throw new TechnicalException("Error initializing spMetadataProvider", e);
} catch (MarshallingException e) {
logger.warn("Unable to print SP metadata", e);
}
// Put IDP and SP metadata together
ChainingMetadataProvider metadataManager = new ChainingMetadataProvider();
try {
metadataManager.addMetadataProvider(idpMetadataProvider);
metadataManager.addMetadataProvider(spMetadataProvider);
} catch (MetadataProviderException e) {
throw new TechnicalException("Error adding idp or sp metadatas to manager", e);
}
// Build the contextProvider
this.contextProvider =
new Saml2ContextProvider(metadataManager, this.idpEntityId, this.spEntityId);
// Get an AuthnRequest builder
this.authnRequestBuilder =
new Saml2AuthnRequestBuilder(forceAuth, comparisonType, destinationBindingType);
// Build the WebSSO handler for sending and receiving SAML2 messages
MessageEncoder encoder = null;
if (SAMLConstants.SAML2_POST_BINDING_URI.equals(destinationBindingType)) {
// Get a velocity engine for the HTTP-POST binding (building of an HTML document)
VelocityEngine velocityEngine = VelocityEngineFactory.getEngine();
encoder = new HTTPPostEncoder(velocityEngine, "/templates/saml2-post-binding.vm");
} else if (SAMLConstants.SAML2_REDIRECT_BINDING_URI.equals(destinationBindingType)) {
encoder = new HTTPRedirectDeflateEncoder();
} else {
throw new UnsupportedOperationException(
"Binding type - " + destinationBindingType + " is not supported");
}
// Do we need binding specific decoder?
MessageDecoder decoder = new Pac4jHTTPPostDecoder(parserPool);
this.handler =
new Saml2WebSSOProfileHandler(
this.credentialProvider, encoder, decoder, parserPool, destinationBindingType);
// Build provider for digital signature validation and encryption
this.signatureTrustEngineProvider = new SignatureTrustEngineProvider(metadataManager);
// Build the SAML response validator
this.responseValidator = new Saml2ResponseValidator();
if (this.maximumAuthenticationLifetime != null) {
this.responseValidator.setMaximumAuthenticationLifetime(this.maximumAuthenticationLifetime);
}
}