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/**
* 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.str;
import java.util.List;
import javax.security.auth.callback.Callback;
import javax.security.auth.callback.CallbackHandler;
import org.apache.wss4j.common.bsp.BSPEnforcer;
import org.apache.wss4j.common.bsp.BSPRule;
import org.apache.wss4j.common.ext.WSPasswordCallback;
import org.apache.wss4j.common.ext.WSSecurityException;
import org.apache.wss4j.common.saml.SamlAssertionWrapper;
import org.apache.wss4j.common.token.BinarySecurity;
import org.apache.wss4j.common.token.PKIPathSecurity;
import org.apache.wss4j.common.token.SecurityTokenReference;
import org.apache.wss4j.common.token.X509Security;
import org.apache.wss4j.common.util.XMLUtils;
import org.apache.wss4j.dom.WSConstants;
import org.apache.wss4j.dom.WSDocInfo;
import org.apache.wss4j.dom.callback.CallbackLookup;
import org.apache.wss4j.dom.callback.DOMCallbackLookup;
import org.apache.wss4j.dom.engine.WSSecurityEngineResult;
import org.apache.wss4j.dom.handler.RequestData;
import org.apache.wss4j.dom.message.token.KerberosSecurity;
import org.apache.wss4j.dom.processor.Processor;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
/**
* Some utilities for the STRParsers.
*/
public final class STRParserUtil {
private static final org.slf4j.Logger LOG =
org.slf4j.LoggerFactory.getLogger(STRParserUtil.class);
private STRParserUtil() {
// complete
}
/**
* Get an SamlAssertionWrapper object from parsing a SecurityTokenReference that uses
* a KeyIdentifier that points to a SAML Assertion.
*
* @param secRef the SecurityTokenReference to the SAML Assertion
* @param strElement The SecurityTokenReference DOM element
* @param request The RequestData instance used to obtain configuration
* @param wsDocInfo The WSDocInfo object that holds previous results
* @return an SamlAssertionWrapper object
* @throws WSSecurityException
*/
public static SamlAssertionWrapper getAssertionFromKeyIdentifier(
SecurityTokenReference secRef,
Element strElement,
RequestData request
) throws WSSecurityException {
String keyIdentifierValue = secRef.getKeyIdentifierValue();
String type = secRef.getKeyIdentifierValueType();
WSSecurityEngineResult result = request.getWsDocInfo().getResult(keyIdentifierValue);
SamlAssertionWrapper samlAssertion = null;
Element token = null;
if (result != null) {
samlAssertion =
(SamlAssertionWrapper)result.get(WSSecurityEngineResult.TAG_SAML_ASSERTION);
return samlAssertion;
} else {
token =
findProcessedTokenElement(
strElement.getOwnerDocument(), request.getWsDocInfo(), request.getCallbackHandler(),
keyIdentifierValue, type
);
if (token != null) {
if (!"Assertion".equals(token.getLocalName())) {
throw new WSSecurityException(
WSSecurityException.ErrorCode.FAILURE, "invalidSAMLsecurity"
);
}
return new SamlAssertionWrapper(token);
}
token =
findUnprocessedTokenElement(
strElement.getOwnerDocument(), request.getWsDocInfo(), request.getCallbackHandler(),
keyIdentifierValue, type
);
if (token == null || !"Assertion".equals(token.getLocalName())) {
throw new WSSecurityException(
WSSecurityException.ErrorCode.FAILURE, "invalidSAMLsecurity"
);
}
Processor proc = request.getWssConfig().getProcessor(WSConstants.SAML_TOKEN);
List samlResult = proc.handleToken(token, request);
return
(SamlAssertionWrapper)samlResult.get(0).get(
WSSecurityEngineResult.TAG_SAML_ASSERTION
);
}
}
/**
* Check that the BinarySecurityToken referenced by the SecurityTokenReference argument
* is BSP compliant.
* @param secRef The SecurityTokenReference to the BinarySecurityToken
* @param token The BinarySecurityToken
* @param bspEnforcer a BSPEnforcer instance to enforce BSP rules
* @throws WSSecurityException
*/
public static void checkBinarySecurityBSPCompliance(
SecurityTokenReference secRef,
BinarySecurity token,
BSPEnforcer bspEnforcer
) throws WSSecurityException {
if (secRef.containsReference()) {
// Check the ValueType attributes
String valueType = secRef.getReference().getValueType();
if (token instanceof X509Security && !X509Security.X509_V3_TYPE.equals(valueType)
|| token instanceof PKIPathSecurity && !PKIPathSecurity.PKI_TYPE.equals(valueType)
|| token instanceof KerberosSecurity
&& !(valueType == null || "".equals(valueType))
&& !WSConstants.WSS_GSS_KRB_V5_AP_REQ.equals(valueType)) {
bspEnforcer.handleBSPRule(BSPRule.R3058);
}
} else if (secRef.containsKeyIdentifier()) {
String valueType = secRef.getKeyIdentifierValueType();
if (!SecurityTokenReference.SKI_URI.equals(valueType)
&& !SecurityTokenReference.THUMB_URI.equals(valueType)
&& !WSConstants.WSS_KRB_KI_VALUE_TYPE.equals(valueType)
&& !X509Security.X509_V3_TYPE.equals(valueType)) {
bspEnforcer.handleBSPRule(BSPRule.R3063);
}
}
// Check TokenType attributes
if (token instanceof PKIPathSecurity) {
String tokenType = secRef.getTokenType();
if (!PKIPathSecurity.PKI_TYPE.equals(tokenType)) {
bspEnforcer.handleBSPRule(BSPRule.R5215);
}
}
}
/**
* Check that the EncryptedKey referenced by the SecurityTokenReference argument
* is BSP compliant.
* @param secRef The SecurityTokenReference to the BinarySecurityToken
* @param bspEnforcer a BSPEnforcer instance to enforce BSP rules
* @throws WSSecurityException
*/
public static void checkEncryptedKeyBSPCompliance(
SecurityTokenReference secRef, BSPEnforcer bspEnforcer
) throws WSSecurityException {
if (secRef.containsKeyIdentifier()) {
String valueType = secRef.getKeyIdentifierValueType();
if (!SecurityTokenReference.ENC_KEY_SHA1_URI.equals(valueType)) {
bspEnforcer.handleBSPRule(BSPRule.R3063);
}
}
String tokenType = secRef.getTokenType();
if (!WSConstants.WSS_ENC_KEY_VALUE_TYPE.equals(tokenType)) {
bspEnforcer.handleBSPRule(BSPRule.R5215);
}
}
/**
* Check that the SAML token referenced by the SecurityTokenReference argument
* is BSP compliant.
* @param secRef The SecurityTokenReference to the SAML token
* @param samlAssertion The SAML Token SamlAssertionWrapper object
* @param bspEnforcer a BSPEnforcer instance to enforce BSP rules
* @throws WSSecurityException
*/
public static void checkSamlTokenBSPCompliance(
SecurityTokenReference secRef,
SamlAssertionWrapper samlAssertion,
BSPEnforcer bspEnforcer
) throws WSSecurityException {
// Check the KeyIdentifier ValueType attributes
if (secRef.containsKeyIdentifier()) {
String valueType = secRef.getKeyIdentifierValueType();
if (samlAssertion.getSaml1() != null
&& !WSConstants.WSS_SAML_KI_VALUE_TYPE.equals(valueType)) {
bspEnforcer.handleBSPRule(BSPRule.R6603);
}
if (samlAssertion.getSaml2() != null
&& !WSConstants.WSS_SAML2_KI_VALUE_TYPE.equals(valueType)) {
bspEnforcer.handleBSPRule(BSPRule.R6616);
}
String encoding = secRef.getKeyIdentifierEncodingType();
if (encoding != null && !"".equals(encoding)) {
bspEnforcer.handleBSPRule(BSPRule.R6604);
}
}
// Check the TokenType attribute
String tokenType = secRef.getTokenType();
if (samlAssertion.getSaml1() != null && !WSConstants.WSS_SAML_TOKEN_TYPE.equals(tokenType)) {
bspEnforcer.handleBSPRule(BSPRule.R6611);
}
if (samlAssertion.getSaml2() != null && !WSConstants.WSS_SAML2_TOKEN_TYPE.equals(tokenType)) {
bspEnforcer.handleBSPRule(BSPRule.R6617);
}
// Check the ValueType attribute of the Reference for SAML2
if (samlAssertion.getSaml2() != null && secRef.containsReference()) {
String valueType = secRef.getReference().getValueType();
if (valueType != null && !"".equals(valueType)) {
bspEnforcer.handleBSPRule(BSPRule.R6614);
}
}
}
/**
* Check that the Username token referenced by the SecurityTokenReference argument
* is BSP compliant.
* @param secRef The SecurityTokenReference to the Username token
* @param bspEnforcer a BSPEnforcer instance to enforce BSP rules
* @throws WSSecurityException
*/
public static void checkUsernameTokenBSPCompliance(
SecurityTokenReference secRef, BSPEnforcer bspEnforcer
) throws WSSecurityException {
if (!secRef.containsReference()) {
// BSP does not permit using a KeyIdentifier to refer to a U/T
bspEnforcer.handleBSPRule(BSPRule.R4215);
}
if (secRef.getReference() != null) {
String valueType = secRef.getReference().getValueType();
if (!WSConstants.WSS_USERNAME_TOKEN_VALUE_TYPE.equals(valueType)) {
bspEnforcer.handleBSPRule(BSPRule.R4214);
}
}
}
/**
* Get the Secret Key from a CallbackHandler
* @param id The id of the element
* @param type The type of the element (may be null)
* @param identifier The WSPasswordCallback usage identifier
* @poaram data The RequestData Object
* @return A Secret Key
* @throws WSSecurityException
*/
public static byte[] getSecretKeyFromToken(
String id,
String type,
int identifier,
RequestData data
) throws WSSecurityException {
String uri = XMLUtils.getIDFromReference(id);
WSPasswordCallback pwcb =
new WSPasswordCallback(uri, null, type, identifier);
try {
Callback[] callbacks = new Callback[]{pwcb};
if (data.getCallbackHandler() != null) {
data.getCallbackHandler().handle(callbacks);
return pwcb.getKey();
}
} catch (Exception e) {
throw new WSSecurityException(
WSSecurityException.ErrorCode.FAILURE, e,
"noPassword", new Object[] {uri});
}
return null;
}
public static Element getTokenElement(
Document doc, WSDocInfo docInfo, CallbackHandler cb,
String uri, String valueType
) throws WSSecurityException {
LOG.debug("Token reference uri: {}", uri);
LOG.debug("Token reference ValueType: {}", valueType);
if (uri == null) {
throw new WSSecurityException(
WSSecurityException.ErrorCode.INVALID_SECURITY, "badReferenceURI"
);
}
Element tokElement =
findProcessedTokenElement(doc, docInfo, cb, uri, valueType);
if (tokElement == null) {
tokElement = findUnprocessedTokenElement(doc, docInfo, cb, uri, valueType);
}
if (tokElement == null) {
throw new WSSecurityException(
WSSecurityException.ErrorCode.SECURITY_TOKEN_UNAVAILABLE,
"noToken", new Object[] {uri});
}
return tokElement;
}
/**
* Find a token that has not been processed already - in other words, it searches for
* the element, rather than trying to access previous results to find the element
* @param doc Parent Document
* @param docInfo WSDocInfo instance
* @param cb CallbackHandler instance
* @param uri URI of the element
* @param type Type of the element
* @return A DOM element
* @throws WSSecurityException
*/
public static Element findUnprocessedTokenElement(
Document doc,
WSDocInfo docInfo,
CallbackHandler cb,
String uri,
String type
) throws WSSecurityException {
String id = XMLUtils.getIDFromReference(uri);
//
// Delegate finding the element to the CallbackLookup instance
//
CallbackLookup callbackLookup = null;
if (docInfo != null) {
callbackLookup = docInfo.getCallbackLookup();
}
if (callbackLookup == null) {
callbackLookup = new DOMCallbackLookup(doc);
}
return callbackLookup.getElement(id, type, true);
}
/**
* Find a token that has been processed already - in other words, it access previous
* results to find the element, rather than conducting a general search
* @param doc Parent Document
* @param docInfo WSDocInfo instance
* @param cb CallbackHandler instance
* @param uri URI of the element
* @param type Type of the element
* @return A DOM element
* @throws WSSecurityException
*/
public static Element findProcessedTokenElement(
Document doc,
WSDocInfo docInfo,
CallbackHandler cb,
String uri,
String type
) throws WSSecurityException {
String id = XMLUtils.getIDFromReference(uri);
//
// Try to find it from the WSDocInfo instance first
//
if (docInfo != null) {
Element token = docInfo.getTokenElement(id);
if (token != null) {
return token;
}
}
//
// Try to find a custom token
//
if (cb != null && (WSConstants.WSC_SCT.equals(type)
|| WSConstants.WSC_SCT_05_12.equals(type)
|| WSConstants.WSS_SAML_KI_VALUE_TYPE.equals(type)
|| WSConstants.WSS_SAML2_KI_VALUE_TYPE.equals(type)
|| KerberosSecurity.isKerberosToken(type))) {
//try to find a custom token
WSPasswordCallback pwcb =
new WSPasswordCallback(id, WSPasswordCallback.CUSTOM_TOKEN);
try {
cb.handle(new Callback[]{pwcb});
Element assertionElem = pwcb.getCustomToken();
if (assertionElem != null) {
return (Element)doc.importNode(assertionElem, true);
}
} catch (Exception e) {
LOG.debug(e.getMessage(), e);
// Consume this failure
}
}
return null;
}
}
