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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.common.token;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
import java.nio.charset.StandardCharsets;
import java.util.Arrays;
import java.util.UUID;
import org.apache.wss4j.common.WSS4JConstants;
import org.apache.wss4j.common.bsp.BSPEnforcer;
import org.apache.wss4j.common.bsp.BSPRule;
import org.apache.wss4j.common.ext.Attachment;
import org.apache.wss4j.common.ext.AttachmentResultCallback;
import org.apache.wss4j.common.ext.WSSecurityException;
import org.apache.wss4j.common.util.DOM2Writer;
import org.apache.wss4j.common.util.XMLUtils;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.Text;
import javax.security.auth.callback.Callback;
import javax.security.auth.callback.CallbackHandler;
import javax.security.auth.callback.UnsupportedCallbackException;
import javax.xml.namespace.QName;
/**
* Binary Security Token.
*/
public class BinarySecurity {
public static final QName TOKEN_BST = new QName(WSS4JConstants.WSSE_NS, "BinarySecurityToken");
public static final QName TOKEN_KI = new QName(WSS4JConstants.WSSE_NS, "KeyIdentifier");
private static final org.slf4j.Logger LOG =
org.slf4j.LoggerFactory.getLogger(BinarySecurity.class);
private Element element;
private byte[] data;
private boolean storeBytesInAttachment;
private CallbackHandler attachmentCallbackHandler;
public CallbackHandler getAttachmentCallbackHandler() {
return attachmentCallbackHandler;
}
public void setAttachmentCallbackHandler(CallbackHandler attachmentCallbackHandler) {
this.attachmentCallbackHandler = attachmentCallbackHandler;
}
/**
* Constructor.
* @param elem The BinarySecurityToken element to process
* @param bspEnforcer a BSPEnforcer instance to enforce BSP rules
* @throws WSSecurityException
*/
public BinarySecurity(Element elem, BSPEnforcer bspEnforcer) throws WSSecurityException {
element = elem;
QName el = new QName(element.getNamespaceURI(), element.getLocalName());
if (!(el.equals(TOKEN_BST) || el.equals(TOKEN_KI))) {
throw new WSSecurityException(
WSSecurityException.ErrorCode.INVALID_SECURITY_TOKEN,
"unhandledToken", new Object[] {el});
}
String encoding = getEncodingType();
if (encoding == null || "".equals(encoding)) {
bspEnforcer.handleBSPRule(BSPRule.R3029);
}
if (!WSS4JConstants.BASE64_ENCODING.equals(encoding)) {
bspEnforcer.handleBSPRule(BSPRule.R3030);
}
String valueType = getValueType();
if (valueType == null || "".equals(valueType)) {
bspEnforcer.handleBSPRule(BSPRule.R3031);
}
}
/**
* Constructor.
*
* @param doc
*/
public BinarySecurity(Document doc) {
element = doc.createElementNS(WSS4JConstants.WSSE_NS, "wsse:BinarySecurityToken");
setEncodingType(WSS4JConstants.BASE64_ENCODING);
}
/**
* Create a BinarySecurityToken via a CallbackHandler
* @param callbackHandler
* @throws WSSecurityException
*/
public BinarySecurity(CallbackHandler callbackHandler) throws WSSecurityException {
if (callbackHandler == null) {
LOG.debug("Trying to create a BinarySecurityToken via a null CallbackHandler");
throw new WSSecurityException(WSSecurityException.ErrorCode.FAILURE);
}
TokenElementCallback[] callback = new TokenElementCallback[] {new TokenElementCallback()};
try {
callbackHandler.handle(callback);
} catch (IOException | UnsupportedCallbackException e) {
throw new IllegalStateException(
"Exception while creating a token element", e
);
}
element = callback[0].getTokenElement();
if (element == null) {
LOG.debug("CallbackHandler did not return a token element");
throw new WSSecurityException(WSSecurityException.ErrorCode.FAILURE);
}
}
/**
* Add the WSSE Namespace to this BST. The namespace is not added by default for
* efficiency purposes.
*/
public void addWSSENamespace() {
XMLUtils.setNamespace(element, WSS4JConstants.WSSE_NS, WSS4JConstants.WSSE_PREFIX);
}
/**
* Add the WSU Namespace to this BST. The namespace is not added by default for
* efficiency purposes.
*/
public void addWSUNamespace() {
element.setAttributeNS(XMLUtils.XMLNS_NS, "xmlns:" + WSS4JConstants.WSU_PREFIX, WSS4JConstants.WSU_NS);
}
/**
* get the value type.
*
* @return the value type
*/
public String getValueType() {
return element.getAttributeNS(null, "ValueType");
}
/**
* set the value type.
*
* @param type
*/
public void setValueType(String type) {
if (type != null) {
element.setAttributeNS(null, "ValueType", type);
}
}
/**
* get the encoding type.
*
* @return the encoding type.
*/
public String getEncodingType() {
return element.getAttributeNS(null, "EncodingType");
}
/**
* set the encoding type.
*
* @param encoding
*/
public void setEncodingType(String encoding) {
if (encoding != null) {
element.setAttributeNS(null, "EncodingType", encoding);
}
}
/**
* get the byte array containing token information.
*
* @return the byte array containing token information
*/
public byte[] getToken() {
if (data != null) {
return data;
}
String text = XMLUtils.getElementText(element);
if (text == null) {
return null;
}
return org.apache.xml.security.utils.XMLUtils.decode(text);
}
/**
* set the token information.
*
* @param data
*/
public void setToken(byte[] data) throws WSSecurityException {
if (data == null) {
throw new IllegalArgumentException("data == null");
}
if (storeBytesInAttachment && attachmentCallbackHandler != null) {
Document document = element.getOwnerDocument();
final String attachmentId = "_" + UUID.randomUUID().toString();
element.setAttributeNS(XMLUtils.XMLNS_NS, "xmlns:xop", WSS4JConstants.XOP_NS);
Element xopInclude =
document.createElementNS(WSS4JConstants.XOP_NS, "xop:Include");
try {
xopInclude.setAttributeNS(null, "href", "cid:" + URLEncoder.encode(attachmentId, StandardCharsets.UTF_8.name()));
} catch (UnsupportedEncodingException e) {
throw new WSSecurityException(WSSecurityException.ErrorCode.FAILURE, e);
}
element.appendChild(xopInclude);
Attachment resultAttachment = new Attachment();
resultAttachment.setId(attachmentId);
resultAttachment.setMimeType("application/ciphervalue");
resultAttachment.setSourceStream(new ByteArrayInputStream(data));
AttachmentResultCallback attachmentResultCallback = new AttachmentResultCallback();
attachmentResultCallback.setAttachmentId(attachmentId);
attachmentResultCallback.setAttachment(resultAttachment);
try {
attachmentCallbackHandler.handle(new Callback[]{attachmentResultCallback});
} catch (Exception e) {
throw new WSSecurityException(WSSecurityException.ErrorCode.FAILURE, e);
}
} else {
Text node = getFirstNode();
node.setData(org.apache.xml.security.utils.XMLUtils.encodeToString(data));
setRawToken(data);
}
}
/**
* Set the raw token data, without Base-64 encoding it into the Element.
*/
public void setRawToken(byte[] data) {
this.data = Arrays.copyOf(data, data.length);
}
/**
* BASE64-Encode the raw token bytes + store them in a text child node.
*/
public void encodeRawToken() {
if (data == null) {
throw new IllegalArgumentException("data == null");
}
Text node = getFirstNode();
node.setData(org.apache.xml.security.utils.XMLUtils.encodeToString(data));
}
/**
* return the first text node.
*
* @return the first text node.
*/
private Text getFirstNode() {
Node node = element.getFirstChild();
while (node != null && Node.TEXT_NODE != node.getNodeType()) {
node = node.getNextSibling();
}
if (node instanceof Text) {
return (Text)node;
}
// Otherwise we have no Text child. Just remove the child nodes + add a new text node
node = element.getFirstChild();
while (node != null) {
Node nextNode = node.getNextSibling();
element.removeChild(node);
node = nextNode;
}
Node textNode = element.getOwnerDocument().createTextNode("");
return (Text)element.appendChild(textNode);
}
/**
* return the dom element.
*
* @return the dom element.
*/
public Element getElement() {
return element;
}
/**
* get the id.
*
* @return the WSU ID of this element
*/
public String getID() {
return element.getAttributeNS(WSS4JConstants.WSU_NS, "Id");
}
/**
* set the id.
*
* @param id
*/
public void setID(String id) {
element.setAttributeNS(WSS4JConstants.WSU_NS, WSS4JConstants.WSU_PREFIX + ":Id", id);
}
/**
* return the string representation of the token.
*
* @return the string representation of the token.
*/
public String toString() {
return DOM2Writer.nodeToString(element);
}
@Override
public int hashCode() {
int result = 17;
byte[] token = getToken();
if (token != null) {
result = 31 * result + Arrays.hashCode(token);
}
result = 31 * result + getValueType().hashCode();
result = 31 * result + getEncodingType().hashCode();
return result;
}
@Override
public boolean equals(Object object) {
if (!(object instanceof BinarySecurity)) {
return false;
}
BinarySecurity binarySecurity = (BinarySecurity)object;
byte[] token = binarySecurity.getToken();
if (!Arrays.equals(token, getToken())) {
return false;
}
String valueType = binarySecurity.getValueType();
if (!valueType.equals(getValueType())) {
return false;
}
String encodingType = binarySecurity.getEncodingType();
if (!encodingType.equals(getEncodingType())) {
return false;
}
return true;
}
public boolean isStoreBytesInAttachment() {
return storeBytesInAttachment;
}
public void setStoreBytesInAttachment(boolean storeBytesInAttachment) {
this.storeBytesInAttachment = storeBytesInAttachment;
}
}
