/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.wss4j.dom.processor;
import java.security.NoSuchProviderException;
import java.security.PublicKey;
import java.util.List;
import javax.xml.crypto.MarshalException;
import javax.xml.crypto.dsig.XMLSignature;
import javax.xml.crypto.dsig.XMLSignatureFactory;
import javax.xml.crypto.dsig.XMLValidateContext;
import javax.xml.crypto.dsig.dom.DOMValidateContext;
import javax.xml.namespace.QName;
import org.apache.wss4j.common.principal.SAMLTokenPrincipalImpl;
import org.w3c.dom.Element;
import org.apache.wss4j.common.crypto.AlgorithmSuite;
import org.apache.wss4j.common.crypto.AlgorithmSuiteValidator;
import org.apache.wss4j.common.ext.WSSecurityException;
import org.apache.wss4j.common.saml.SAMLKeyInfo;
import org.apache.wss4j.common.saml.SAMLUtil;
import org.apache.wss4j.common.saml.SamlAssertionWrapper;
import org.apache.wss4j.common.util.DOM2Writer;
import org.apache.wss4j.dom.WSConstants;
import org.apache.wss4j.dom.WSDocInfo;
import org.apache.wss4j.dom.WSSecurityEngineResult;
import org.apache.wss4j.dom.handler.RequestData;
import org.apache.wss4j.dom.saml.WSSSAMLKeyInfoProcessor;
import org.apache.wss4j.dom.validate.Credential;
import org.apache.wss4j.dom.validate.Validator;
import org.opensaml.xml.signature.KeyInfo;
import org.opensaml.xml.signature.Signature;
public class SAMLTokenProcessor implements Processor {
private static final org.slf4j.Logger LOG =
org.slf4j.LoggerFactory.getLogger(SAMLTokenProcessor.class);
private XMLSignatureFactory signatureFactory;
public SAMLTokenProcessor() {
// Try to install the Santuario Provider - fall back to the JDK provider if this does
// not work
try {
signatureFactory = XMLSignatureFactory.getInstance("DOM", "ApacheXMLDSig");
} catch (NoSuchProviderException ex) {
signatureFactory = XMLSignatureFactory.getInstance("DOM");
}
}
public List<WSSecurityEngineResult> handleToken(
Element elem,
RequestData data,
WSDocInfo wsDocInfo
) throws WSSecurityException {
if (LOG.isDebugEnabled()) {
LOG.debug("Found SAML Assertion element");
}
Validator validator =
data.getValidator(new QName(elem.getNamespaceURI(), elem.getLocalName()));
Credential credential = handleSAMLToken(elem, data, validator, wsDocInfo);
SamlAssertionWrapper samlAssertion = credential.getSamlAssertion();
if (LOG.isDebugEnabled()) {
LOG.debug("SAML Assertion issuer " + samlAssertion.getIssuerString());
LOG.debug(DOM2Writer.nodeToString(elem));
}
// See if the token has been previously processed
String id = samlAssertion.getId();
Element foundElement = wsDocInfo.getTokenElement(id);
if (elem.equals(foundElement)) {
WSSecurityEngineResult result = wsDocInfo.getResult(id);
return java.util.Collections.singletonList(result);
} else if (foundElement != null) {
throw new WSSecurityException(
WSSecurityException.ErrorCode.INVALID_SECURITY_TOKEN, "duplicateError"
);
}
wsDocInfo.addTokenElement(elem);
WSSecurityEngineResult result = null;
if (samlAssertion.isSigned()) {
result = new WSSecurityEngineResult(WSConstants.ST_SIGNED, samlAssertion);
} else {
result = new WSSecurityEngineResult(WSConstants.ST_UNSIGNED, samlAssertion);
}
result.put(WSSecurityEngineResult.TAG_ID, samlAssertion.getId());
if (validator != null) {
result.put(WSSecurityEngineResult.TAG_VALIDATED_TOKEN, Boolean.TRUE);
if (credential.getTransformedToken() != null) {
result.put(
WSSecurityEngineResult.TAG_TRANSFORMED_TOKEN, credential.getTransformedToken()
);
if (credential.getPrincipal() != null) {
result.put(WSSecurityEngineResult.TAG_PRINCIPAL, credential.getPrincipal());
} else {
SAMLTokenPrincipalImpl samlPrincipal =
new SAMLTokenPrincipalImpl(credential.getTransformedToken());
result.put(WSSecurityEngineResult.TAG_PRINCIPAL, samlPrincipal);
}
} else if (credential.getPrincipal() != null) {
result.put(WSSecurityEngineResult.TAG_PRINCIPAL, credential.getPrincipal());
} else {
result.put(WSSecurityEngineResult.TAG_PRINCIPAL, new SAMLTokenPrincipalImpl(samlAssertion));
}
result.put(WSSecurityEngineResult.TAG_SUBJECT, credential.getSubject());
}
wsDocInfo.addResult(result);
return java.util.Collections.singletonList(result);
}
public Credential handleSAMLToken(
Element token,
RequestData data,
Validator validator,
WSDocInfo docInfo
) throws WSSecurityException {
SamlAssertionWrapper samlAssertion = new SamlAssertionWrapper(token);
if (samlAssertion.isSigned()) {
// Check for compliance against the defined AlgorithmSuite
AlgorithmSuite algorithmSuite = data.getSamlAlgorithmSuite();
Signature sig = samlAssertion.getSignature();
KeyInfo keyInfo = sig.getKeyInfo();
if (keyInfo == null) {
throw new WSSecurityException(
WSSecurityException.ErrorCode.FAILURE, "invalidSAMLsecurity",
"cannot get certificate or key"
);
}
SAMLKeyInfo samlKeyInfo =
SAMLUtil.getCredentialFromKeyInfo(
keyInfo.getDOM(), new WSSSAMLKeyInfoProcessor(data, docInfo), data.getSigVerCrypto()
);
if (algorithmSuite != null) {
AlgorithmSuiteValidator algorithmSuiteValidator = new
AlgorithmSuiteValidator(algorithmSuite);
PublicKey key = null;
if (samlKeyInfo.getCerts() != null && samlKeyInfo.getCerts()[0] != null) {
key = samlKeyInfo.getCerts()[0].getPublicKey();
} else if (samlKeyInfo.getPublicKey() != null) {
key = samlKeyInfo.getPublicKey();
} else {
throw new WSSecurityException(
WSSecurityException.ErrorCode.FAILURE, "invalidSAMLsecurity",
"cannot get certificate or key");
}
// Not checking signature here, just marshalling into an XMLSignature
// structure for testing the transform/digest algorithms etc.
XMLValidateContext context = new DOMValidateContext(key, sig.getDOM());
context.setProperty("org.apache.jcp.xml.dsig.secureValidation", Boolean.TRUE);
context.setProperty("org.jcp.xml.dsig.secureValidation", Boolean.TRUE);
XMLSignature xmlSignature;
try {
xmlSignature = signatureFactory.unmarshalXMLSignature(context);
} catch (MarshalException ex) {
throw new WSSecurityException(
WSSecurityException.ErrorCode.FAILED_CHECK, "invalidSAMLsecurity",
ex, "cannot get certificate or key"
);
}
algorithmSuiteValidator.checkSignatureAlgorithms(xmlSignature);
algorithmSuiteValidator.checkAsymmetricKeyLength(key);
}
samlAssertion.verifySignature(samlKeyInfo);
}
// Parse the subject if it exists
samlAssertion.parseSubject(
new WSSSAMLKeyInfoProcessor(data, docInfo), data.getSigVerCrypto(),
data.getCallbackHandler()
);
// Now delegate the rest of the verification to the Validator
Credential credential = new Credential();
credential.setSamlAssertion(samlAssertion);
if (validator != null) {
return validator.validate(credential, data);
}
return credential;
}
}