SamlWriter.java
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/*
* Decompiled with CFR 0_118.
*
* Could not load the following classes:
* org.joda.time.format.DateTimeFormatter
*/
package com.adobe.granite.auth.saml.util;
import com.adobe.granite.auth.saml.model.AbstractRequest;
import com.adobe.granite.auth.saml.model.AuthnRequest;
import com.adobe.granite.auth.saml.model.Issuer;
import com.adobe.granite.auth.saml.model.LogoutRequest;
import com.adobe.granite.auth.saml.model.LogoutResponse;
import com.adobe.granite.auth.saml.model.Message;
import com.adobe.granite.auth.saml.model.NameIdPolicy;
import com.adobe.granite.auth.saml.model.Status;
import com.adobe.granite.auth.saml.model.xml.SamlXmlConstants;
import com.adobe.granite.auth.saml.util.SamlWriterException;
import java.io.OutputStream;
import java.security.InvalidAlgorithmParameterException;
import java.security.Key;
import java.security.NoSuchAlgorithmException;
import java.util.Calendar;
import java.util.Collections;
import java.util.LinkedList;
import java.util.List;
import javax.xml.crypto.MarshalException;
import javax.xml.crypto.dsig.CanonicalizationMethod;
import javax.xml.crypto.dsig.DigestMethod;
import javax.xml.crypto.dsig.Reference;
import javax.xml.crypto.dsig.SignatureMethod;
import javax.xml.crypto.dsig.SignedInfo;
import javax.xml.crypto.dsig.Transform;
import javax.xml.crypto.dsig.XMLSignContext;
import javax.xml.crypto.dsig.XMLSignature;
import javax.xml.crypto.dsig.XMLSignatureException;
import javax.xml.crypto.dsig.XMLSignatureFactory;
import javax.xml.crypto.dsig.dom.DOMSignContext;
import javax.xml.crypto.dsig.keyinfo.KeyInfo;
import javax.xml.crypto.dsig.spec.C14NMethodParameterSpec;
import javax.xml.crypto.dsig.spec.DigestMethodParameterSpec;
import javax.xml.crypto.dsig.spec.SignatureMethodParameterSpec;
import javax.xml.crypto.dsig.spec.TransformParameterSpec;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.transform.Result;
import javax.xml.transform.Source;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerConfigurationException;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
import org.joda.time.format.DateTimeFormatter;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
public class SamlWriter {
private static final String DIGEST_METHOD = "http://www.w3.org/2001/04/xmlenc#sha256";
private static final String SIGNATURE_METHOD = "http://www.w3.org/2000/09/xmldsig#rsa-sha1";
private DocumentBuilderFactory builderFactory = DocumentBuilderFactory.newInstance();
public SamlWriter() {
this.builderFactory.setNamespaceAware(true);
}
public void write(Message message, OutputStream out, Key privateKey) throws SamlWriterException {
Document requestDoc;
Transformer trans;
if (message instanceof AuthnRequest) {
requestDoc = this.createRequestDocument((AuthnRequest)message, privateKey);
} else if (message instanceof LogoutRequest) {
requestDoc = this.createRequestDocument((LogoutRequest)message, privateKey);
} else if (message instanceof LogoutResponse) {
requestDoc = this.createResponseDocument((LogoutResponse)message, privateKey);
} else {
throw new RuntimeException("Messages of type " + message.getClass().getName() + " are not supported yet.");
}
TransformerFactory transfac = TransformerFactory.newInstance();
try {
trans = transfac.newTransformer();
}
catch (TransformerConfigurationException e) {
throw new SamlWriterException("Unable to create a new Transformer instance", e);
}
trans.setOutputProperty("indent", "no");
StreamResult result = new StreamResult(out);
DOMSource source = new DOMSource(requestDoc);
try {
trans.transform(source, result);
}
catch (TransformerException e) {
throw new SamlWriterException("An error occurred writing xml to output stream", e);
}
}
protected Document createResponseDocument(LogoutResponse response, Key privateKey) throws SamlWriterException {
DocumentBuilder builder;
try {
builder = this.builderFactory.newDocumentBuilder();
}
catch (ParserConfigurationException e) {
throw new RuntimeException(e);
}
Document document = builder.newDocument();
this.createLogoutResponseElement(response, document, privateKey);
return document;
}
protected Document createRequestDocument(AuthnRequest request, Key privateKey) throws SamlWriterException {
DocumentBuilder builder;
try {
builder = this.builderFactory.newDocumentBuilder();
}
catch (ParserConfigurationException e) {
throw new RuntimeException(e);
}
Document document = builder.newDocument();
this.createAuthnRequestElement(request, document, privateKey);
return document;
}
protected Document createRequestDocument(LogoutRequest request, Key privateKey) throws SamlWriterException {
DocumentBuilder builder;
try {
builder = this.builderFactory.newDocumentBuilder();
}
catch (ParserConfigurationException e) {
throw new RuntimeException(e);
}
Document document = builder.newDocument();
this.createLogoutRequestElement(request, document, privateKey);
return document;
}
protected void createLogoutResponseElement(LogoutResponse logoutResponse, Node parent, Key privateKey) throws SamlWriterException {
Document ownerDocument = parent instanceof Document ? (Document)parent : parent.getOwnerDocument();
Element logoutResponseElement = ownerDocument.createElementNS("urn:oasis:names:tc:SAML:2.0:protocol", "samlp:LogoutResponse");
logoutResponseElement.setAttributeNS("http://www.w3.org/2000/xmlns/", "xmlns:samlp", "urn:oasis:names:tc:SAML:2.0:protocol");
logoutResponseElement.setAttributeNS("http://www.w3.org/2000/xmlns/", "xmlns:saml", "urn:oasis:names:tc:SAML:2.0:assertion");
if (logoutResponse.getId() != null) {
logoutResponseElement.setAttribute("ID", logoutResponse.getId());
logoutResponseElement.setIdAttribute("ID", true);
}
if (logoutResponse.getVersion() != null) {
logoutResponseElement.setAttribute("Version", logoutResponse.getVersion());
}
if (logoutResponse.getIssueInstant() != null) {
logoutResponseElement.setAttribute("IssueInstant", SamlXmlConstants.XML_DATE_FORMATTER.print(logoutResponse.getIssueInstant().getTimeInMillis()));
}
if (logoutResponse.getDestination() != null) {
logoutResponseElement.setAttribute("Destination", logoutResponse.getDestination());
}
if (logoutResponse.getIssuer() != null) {
this.createIssuerElement(logoutResponse.getIssuer(), logoutResponseElement);
}
Element statusElement = null;
if (logoutResponse.getStatus() != null) {
statusElement = this.createStatusElement(logoutResponse.getStatus(), logoutResponseElement);
}
parent.appendChild(logoutResponseElement);
this.signDocument(ownerDocument, statusElement, privateKey, logoutResponse.getId());
}
protected Element createStatusElement(Status status, Element parent) {
Document ownerDoc = parent.getOwnerDocument();
Element statusElement = ownerDoc.createElementNS("urn:oasis:names:tc:SAML:2.0:protocol", "samlp:Status");
statusElement.setAttributeNS("http://www.w3.org/2000/xmlns/", "xmlns:samlp", "urn:oasis:names:tc:SAML:2.0:protocol");
Element statusCodeElement = ownerDoc.createElementNS("urn:oasis:names:tc:SAML:2.0:protocol", "samlp:StatusCode");
statusCodeElement.setAttributeNS("http://www.w3.org/2000/xmlns/", "xmlns:samlp", "urn:oasis:names:tc:SAML:2.0:protocol");
statusCodeElement.setAttribute("Value", status.getStatusCode());
statusElement.appendChild(statusCodeElement);
parent.appendChild(statusElement);
return statusElement;
}
protected void createAuthnRequestElement(AuthnRequest authnRequest, Node parent, Key privateKey) throws SamlWriterException {
Document ownerDocument = parent instanceof Document ? (Document)parent : parent.getOwnerDocument();
Element authnRequestElement = ownerDocument.createElementNS("urn:oasis:names:tc:SAML:2.0:protocol", "samlp:AuthnRequest");
authnRequestElement.setAttributeNS("http://www.w3.org/2000/xmlns/", "xmlns:samlp", "urn:oasis:names:tc:SAML:2.0:protocol");
parent.appendChild(authnRequestElement);
this.handleAbstractRequest(authnRequestElement, authnRequest);
if (authnRequest.hasAssertionConsumerServiceURL()) {
authnRequestElement.setAttribute("AssertionConsumerServiceURL", authnRequest.getAssertionConsumerServiceUrl());
} else if (authnRequest.hasAssertionConsumerServiceIndex()) {
authnRequestElement.setAttribute("AssertionConsumerServiceIndex", authnRequest.getAssertionConsumerServiceIndex());
}
if (authnRequest.hasProtocolBinding()) {
authnRequestElement.setAttribute("ProtocolBinding", authnRequest.getProtocolBinding());
}
if (authnRequest.hasIssuer()) {
this.createIssuerElement(authnRequest.getIssuer(), authnRequestElement);
}
Node nameIdPolicyNode = null;
if (authnRequest.hasNameIdPolicy()) {
nameIdPolicyNode = this.createNameIdPolicyElement(authnRequest.getNameIdPolicy(), authnRequestElement);
}
this.signDocument(ownerDocument, nameIdPolicyNode, privateKey, authnRequest.getId());
}
protected void createIssuerElement(Issuer issuer, Node parent) {
Document ownerDoc = parent.getOwnerDocument();
Element issuerElement = ownerDoc.createElementNS("urn:oasis:names:tc:SAML:2.0:assertion", "saml:Issuer");
issuerElement.setAttributeNS("http://www.w3.org/2000/xmlns/", "xmlns:saml", "urn:oasis:names:tc:SAML:2.0:assertion");
parent.appendChild(issuerElement);
issuerElement.setTextContent(issuer.getValue());
}
protected Node createNameIdPolicyElement(NameIdPolicy nameIdPolicy, Node parent) {
Document ownerDoc = parent.getOwnerDocument();
Element nameIdPolicyElement = ownerDoc.createElementNS("urn:oasis:names:tc:SAML:2.0:protocol", "samlp:NameIDPolicy");
nameIdPolicyElement.setAttributeNS("http://www.w3.org/2000/xmlns/", "xmlns:samlp", "urn:oasis:names:tc:SAML:2.0:protocol");
if (nameIdPolicy.hasFormat()) {
nameIdPolicyElement.setAttribute("Format", nameIdPolicy.getFormat());
}
if (nameIdPolicy.hasAllowCreate()) {
nameIdPolicyElement.setAttribute("AllowCreate", Boolean.toString(nameIdPolicy.isAllowCreate()));
}
if (nameIdPolicy.hasSpNameQualifier()) {
nameIdPolicyElement.setAttribute("SPNameQualifier", nameIdPolicy.getSpNameQualifier());
}
parent.appendChild(nameIdPolicyElement);
return nameIdPolicyElement;
}
protected void handleAbstractRequest(Element requestElement, AbstractRequest request) {
requestElement.setAttribute("Version", request.getVersion());
requestElement.setAttribute("ID", request.getId());
requestElement.setIdAttribute("ID", true);
requestElement.setAttribute("IssueInstant", SamlXmlConstants.XML_DATE_FORMATTER.print(request.getIssueInstant().getTimeInMillis()));
if (request.hasConsent()) {
requestElement.setAttribute("Consent", request.getConsent());
}
if (request.hasDestination()) {
requestElement.setAttribute("Destination", request.getDestination());
}
}
protected void createLogoutRequestElement(LogoutRequest request, Node parent, Key privateKey) throws SamlWriterException {
Document ownerDocument = parent instanceof Document ? (Document)parent : parent.getOwnerDocument();
Element requestElement = ownerDocument.createElementNS("urn:oasis:names:tc:SAML:2.0:protocol", "samlp:LogoutRequest");
requestElement.setAttributeNS("http://www.w3.org/2000/xmlns/", "xmlns:samlp", "urn:oasis:names:tc:SAML:2.0:protocol");
parent.appendChild(requestElement);
this.handleAbstractRequest(requestElement, request);
Element issuerElement = ownerDocument.createElementNS("urn:oasis:names:tc:SAML:2.0:assertion", "saml:Issuer");
issuerElement.setAttributeNS("http://www.w3.org/2000/xmlns/", "xmlns:saml", "urn:oasis:names:tc:SAML:2.0:assertion");
issuerElement.setTextContent(request.getIssuer().getValue());
requestElement.appendChild(issuerElement);
Element nameIdElement = null;
if (request.getNameId() != null) {
nameIdElement = ownerDocument.createElementNS("urn:oasis:names:tc:SAML:2.0:assertion", "saml:NameID");
nameIdElement.setAttributeNS("http://www.w3.org/2000/xmlns/", "xmlns:saml", "urn:oasis:names:tc:SAML:2.0:assertion");
nameIdElement.setTextContent(request.getNameId().toString());
if (request.getNameIdFormat() != null) {
nameIdElement.setAttribute("Format", request.getNameIdFormat());
}
if (request.getNameQualifier() != null) {
nameIdElement.setAttribute("NameQualifier", request.getNameQualifier());
}
if (request.getSpNameQualifier() != null) {
nameIdElement.setAttribute("SPNameQualifier", request.getSpNameQualifier());
}
requestElement.appendChild(nameIdElement);
}
for (String sessionIndex : request.getSessionIndices()) {
Element sessionIndexElement = ownerDocument.createElementNS("urn:oasis:names:tc:SAML:2.0:protocol", "samlp:SessionIndex");
sessionIndexElement.setAttributeNS("http://www.w3.org/2000/xmlns/", "xmlns:samlp", "urn:oasis:names:tc:SAML:2.0:protocol");
sessionIndexElement.setTextContent(sessionIndex);
requestElement.appendChild(sessionIndexElement);
}
this.signDocument(ownerDocument, nameIdElement, privateKey, request.getId());
}
protected void signDocument(Document ownerDocument, Node placeSignatureBefore, Key privateKey, String messageId) throws SamlWriterException {
if (privateKey != null) {
DOMSignContext domSignContext = null;
domSignContext = placeSignatureBefore != null ? new DOMSignContext(privateKey, (Node)ownerDocument.getDocumentElement(), placeSignatureBefore) : new DOMSignContext(privateKey, (Node)ownerDocument.getDocumentElement());
XMLSignatureFactory signatureFactory = XMLSignatureFactory.getInstance("DOM");
try {
LinkedList<Transform> transforms = new LinkedList<Transform>();
transforms.add(signatureFactory.newTransform("http://www.w3.org/2000/09/xmldsig#enveloped-signature", (TransformParameterSpec)null));
transforms.add(signatureFactory.newTransform("http://www.w3.org/2001/10/xml-exc-c14n#", (TransformParameterSpec)null));
Reference reference = signatureFactory.newReference("#" + messageId, signatureFactory.newDigestMethod("http://www.w3.org/2001/04/xmlenc#sha256", null), transforms, null, null);
SignedInfo signedInfo = signatureFactory.newSignedInfo(signatureFactory.newCanonicalizationMethod("http://www.w3.org/2001/10/xml-exc-c14n#", (C14NMethodParameterSpec)null), signatureFactory.newSignatureMethod("http://www.w3.org/2000/09/xmldsig#rsa-sha1", null), Collections.singletonList(reference));
XMLSignature xmlSignature = signatureFactory.newXMLSignature(signedInfo, null);
xmlSignature.sign(domSignContext);
}
catch (XMLSignatureException e) {
throw new SamlWriterException("XMLSignature exception while signing document.", e);
}
catch (MarshalException e) {
throw new SamlWriterException("MarshalException while signing document.", e);
}
catch (NoSuchAlgorithmException e) {
throw new SamlWriterException("Signature Algorithm not available.", e);
}
catch (InvalidAlgorithmParameterException e) {
throw new SamlWriterException("Invalid parameter for signature algorithm.", e);
}
}
}
}