public static SAMLConfiguration getInstance(boolean noInit) {
if (logger.isDebugEnabled()) {
logger.debug("getInstance(String, boolean) - start"); // $NON-NLS-1$
}
if (instance == null) {
instance = new SAMLConfiguration();
}
instance.setNoInit(noInit);
if (logger.isDebugEnabled()) {
logger.debug("getInstance(String, boolean) - end"); // $NON-NLS-1$
}
return instance;
}
/**
* @param SAMLToken - SAML Assertion XML
* @param contextAttributeName - SAML Attribute name containing Context data
* @param verfiySignature
* @return a base64 encoded string containing the context
* @throws SAMLValidationException - if validation fails
*/
public static List<AttributeStatement> validate(byte[] SAMLToken, SAMLConfiguration samlConfig)
throws SAMLValidationException {
if (logger.isDebugEnabled()) {
logger.debug("validate(byte[], SAMLConfiguration) - start"); // $NON-NLS-1$
}
Decrypter samlDecrypter = samlConfig.getSamlDecrypter();
SignatureTrustEngine sigTrustEngine = samlConfig.getTrustEngine();
String myURI = samlConfig.getMyURI();
MessageReplayRule replayRule = samlConfig.getReplayRule();
BasicParserPool ppMgr = new BasicParserPool();
ppMgr.setNamespaceAware(true);
VerifySignatureType verfiySignature = samlConfig.getVerifySignature();
List<AttributeStatement> attrStatements = null;
if (SAMLToken != null) {
try {
InputStream in = new ByteArrayInputStream(SAMLToken);
Document SAMLDoc;
try {
SAMLDoc = ppMgr.parse(in);
} catch (XMLParserException e) {
logger.error(
"validate(byte[], String, Decrypter, SignatureTrustEngine, String, MessageReplayRule, ParserPool, VerifySignatureType)",
e); //$NON-NLS-1$
throw createSAMLValidationException("Error parsing SAML XML", true, e);
}
Element responseElement = SAMLDoc.getDocumentElement();
SAMLType samlType = SAMLType.Response;
if (responseElement == null) {
throw createSAMLValidationException(
"Missing SAML Encrypted Assertion or Assertion or Assertion Response", true);
}
if (!"Response".equals(responseElement.getLocalName())
|| !SAMLConstants.SAML20P_NS.equals(responseElement.getNamespaceURI())) {
if (!"Assertion".equals(responseElement.getLocalName())
|| !SAMLConstants.SAML20_NS.equals(responseElement.getNamespaceURI())) {
if (!"EncryptedAssertion".equals(responseElement.getLocalName())
|| !SAMLConstants.SAML20_NS.equals(responseElement.getNamespaceURI())) {
throw createSAMLValidationException(
"Missing or invalid SAML Encrypted Assertion or Assertion or Assertion Response",
true);
} else {
samlType = SAMLType.EncryptedAssertion;
}
} else {
samlType = SAMLType.Assertion;
}
} else {
samlType = SAMLType.Response;
}
if (samlType == SAMLType.Response) {
// Unmarshall SAML Assertion Response into an OpenSAML Java object.
UnmarshallerFactory unmarshallerFactory = Configuration.getUnmarshallerFactory();
Unmarshaller unmarshaller = unmarshallerFactory.getUnmarshaller(responseElement);
Response samlResponse;
try {
samlResponse = (Response) unmarshaller.unmarshall(responseElement);
} catch (UnmarshallingException e) {
logger.error(
"validate(byte[], String, Decrypter, SignatureTrustEngine, String, MessageReplayRule, ParserPool, VerifySignatureType)",
e); //$NON-NLS-1$
throw createSAMLValidationException(
"Error in unmarshalling SAML XML Document", true, e);
}
// Check the replay attack for Response
if (replayRule != null) {
BasicSAMLMessageContext messageContext = new BasicSAMLMessageContext();
// messageContext.setInboundMessage(samlResponse);
if (samlResponse.getIssuer() != null)
messageContext.setInboundMessageIssuer(samlResponse.getIssuer().getValue());
messageContext.setInboundSAMLMessageId(samlResponse.getID());
try {
replayRule.evaluate(messageContext);
} catch (SecurityPolicyException e) {
logger.error(
"validate(byte[], String, Decrypter, SignatureTrustEngine, String, MessageReplayRule, ParserPool, VerifySignatureType)",
e); //$NON-NLS-1$
throw createSAMLValidationException("Possible Replay Attack for Response", false, e);
}
}
// Validate the status code
if (!StatusCode.SUCCESS_URI.equals(samlResponse.getStatus().getStatusCode().getValue())) {
throw createSAMLValidationException("Invalid Status Code.", true);
}
boolean responseSignatureVerified =
validateResponseSignature(samlResponse, sigTrustEngine, verfiySignature);
// Get first encrypted Assertion, if not present get first unencrypted assertion
int assertCount = samlResponse.getEncryptedAssertions().size();
if (assertCount == 0) {
assertCount = samlResponse.getAssertions().size();
if (assertCount == 0) {
throw createSAMLValidationException(
"No Assertion or EncryptedAssertion found in received response", true);
} else {
for (Assertion samlAssertion : samlResponse.getAssertions()) {
attrStatements =
validateAssertion(
samlAssertion,
sigTrustEngine,
myURI,
replayRule,
verfiySignature,
responseSignatureVerified);
break; // Use the first only
}
}
} else {
for (EncryptedAssertion samlEncryptedAssertion :
samlResponse.getEncryptedAssertions()) {
// Decryption
Assertion samlAssertion = null;
try {
samlAssertion = samlDecrypter.decrypt(samlEncryptedAssertion);
} catch (DecryptionException e) {
logger.error(
"validate(byte[], String, Decrypter, SignatureTrustEngine, String, MessageReplayRule, ParserPool, VerifySignatureType)",
e); //$NON-NLS-1$
throw createSAMLValidationException(
"Error Decrypting Received Encrypted Assertion", true, e);
}
attrStatements =
validateAssertion(
samlAssertion,
sigTrustEngine,
myURI,
replayRule,
verfiySignature,
responseSignatureVerified);
break; // Use the first only
}
}
} else if (samlType == SAMLType.EncryptedAssertion) {
// Unmarshall SAML Encrypted Assertion into an OpenSAML Java object.
UnmarshallerFactory unmarshallerFactory = Configuration.getUnmarshallerFactory();
Unmarshaller unmarshaller = unmarshallerFactory.getUnmarshaller(responseElement);
EncryptedAssertion encryptedAssertion = null;
try {
encryptedAssertion = (EncryptedAssertion) unmarshaller.unmarshall(responseElement);
} catch (UnmarshallingException e) {
logger.error(
"validate(byte[], String, Decrypter, SignatureTrustEngine, String, MessageReplayRule, ParserPool, VerifySignatureType)",
e); //$NON-NLS-1$
throw createSAMLValidationException(
"Error in unmarshalling SAML XML Document", true, e);
}
boolean responseSignatureVerified = false;
// Decryption
Assertion samlAssertion = null;
try {
samlAssertion = samlDecrypter.decrypt(encryptedAssertion);
} catch (DecryptionException e) {
logger.error(
"validate(byte[], String, Decrypter, SignatureTrustEngine, String, MessageReplayRule, ParserPool, VerifySignatureType)",
e); //$NON-NLS-1$
throw createSAMLValidationException(
"Error Decrypting Received Encrypted Assertion", true, e);
}
attrStatements =
validateAssertion(
samlAssertion,
sigTrustEngine,
myURI,
replayRule,
verfiySignature,
responseSignatureVerified);
} else if (samlType == SAMLType.Assertion) {
// Unmarshall SAML Assertion into an OpenSAML Java object.
UnmarshallerFactory unmarshallerFactory = Configuration.getUnmarshallerFactory();
Unmarshaller unmarshaller = unmarshallerFactory.getUnmarshaller(responseElement);
Assertion samlAssertion = null;
try {
samlAssertion = (Assertion) unmarshaller.unmarshall(responseElement);
} catch (UnmarshallingException e) {
logger.error(
"validate(byte[], String, Decrypter, SignatureTrustEngine, String, MessageReplayRule, ParserPool, VerifySignatureType)",
e); //$NON-NLS-1$
throw createSAMLValidationException(
"Error in unmarshalling SAML XML Document", true, e);
}
boolean responseSignatureVerified = false;
attrStatements =
validateAssertion(
samlAssertion,
sigTrustEngine,
myURI,
replayRule,
verfiySignature,
responseSignatureVerified);
}
} catch (SAMLValidationException e) {
throw e;
}
}
if (logger.isDebugEnabled()) {
logger.debug(
"validate(byte[], String, Decrypter, SignatureTrustEngine, String, MessageReplayRule, ParserPool, VerifySignatureType) - end"); //$NON-NLS-1$
}
return attrStatements;
}
