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package com.onelogin.saml2.settings;
import java.io.InputStream;
import java.net.URL;
import java.util.LinkedHashMap;
import java.util.Map;
import javax.xml.xpath.XPathException;
import javax.xml.xpath.XPathExpressionException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.w3c.dom.Document;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.InputSource;
import com.onelogin.saml2.exception.Error;
import com.onelogin.saml2.util.Constants;
import com.onelogin.saml2.util.Util;
/**
* IdPMetadataParser class of OneLogin's Java Toolkit.
*
* A class that implements the settings parser from IdP Metadata
*
*/
public class IdPMetadataParser {
/**
* Private property to construct a logger for this class.
*/
private static final Logger LOGGER = LoggerFactory.getLogger(IdPMetadataParser.class);
/**
* Get IdP Metadata Info from XML Document
*
* @param xmlDocument
* XML document hat contains IdP metadata
* @param entityId
* Entity Id of the desired IdP, if no entity Id is provided and the XML metadata contains more than one IDPSSODescriptor, the first is returned
* @param desiredNameIdFormat
* If available on IdP metadata, use that nameIdFormat
* @param desiredSSOBinding
* Parse specific binding SSO endpoint.
* @param desiredSLOBinding
* Parse specific binding SLO endpoint.
*
* @return Mapped values with metadata info in Saml2Settings format
* @throws XPathExpressionException
*/
public static Map parseXML(Document xmlDocument, String entityId, String desiredNameIdFormat, String desiredSSOBinding, String desiredSLOBinding) throws XPathException {
Map metadataInfo = new LinkedHashMap<>();
try {
String customIdPStr = "";
if (entityId != null && !entityId.isEmpty()) {
customIdPStr = "[@entityID=\"" + entityId + "\"]";
}
String idpDescryptorXPath = "//md:EntityDescriptor" + customIdPStr + "/md:IDPSSODescriptor";
NodeList idpDescriptorNodes = Util.query(xmlDocument, idpDescryptorXPath);
if (idpDescriptorNodes.getLength() > 0) {
Node idpDescriptorNode = idpDescriptorNodes.item(0);
if (entityId == null || entityId.isEmpty()) {
Node entityIDNode = idpDescriptorNode.getParentNode().getAttributes().getNamedItem("entityID");
if (entityIDNode != null) {
entityId = entityIDNode.getNodeValue();
}
}
if (entityId != null && !entityId.isEmpty()) {
metadataInfo.put(SettingsBuilder.IDP_ENTITYID_PROPERTY_KEY, entityId);
}
NodeList ssoNodes = Util.query(xmlDocument, "./md:SingleSignOnService[@Binding=\"" + desiredSSOBinding + "\"]", idpDescriptorNode);
if (ssoNodes.getLength() < 1) {
ssoNodes = Util.query(xmlDocument, "./md:SingleSignOnService", idpDescriptorNode);
}
if (ssoNodes.getLength() > 0) {
metadataInfo.put(SettingsBuilder.IDP_SINGLE_SIGN_ON_SERVICE_URL_PROPERTY_KEY, ssoNodes.item(0).getAttributes().getNamedItem("Location").getNodeValue());
metadataInfo.put(SettingsBuilder.IDP_SINGLE_SIGN_ON_SERVICE_BINDING_PROPERTY_KEY, ssoNodes.item(0).getAttributes().getNamedItem("Binding").getNodeValue());
}
NodeList sloNodes = Util.query(xmlDocument, "./md:SingleLogoutService[@Binding=\"" + desiredSLOBinding + "\"]", idpDescriptorNode);
if (sloNodes.getLength() < 1) {
sloNodes = Util.query(xmlDocument, "./md:SingleLogoutService", idpDescriptorNode);
}
if (sloNodes.getLength() > 0) {
metadataInfo.put(SettingsBuilder.IDP_SINGLE_LOGOUT_SERVICE_URL_PROPERTY_KEY, sloNodes.item(0).getAttributes().getNamedItem("Location").getNodeValue());
metadataInfo.put(SettingsBuilder.IDP_SINGLE_LOGOUT_SERVICE_BINDING_PROPERTY_KEY, sloNodes.item(0).getAttributes().getNamedItem("Binding").getNodeValue());
}
NodeList keyDescriptorCertSigningNodes = Util.query(xmlDocument, "./md:KeyDescriptor[not(contains(@use, \"encryption\"))]/ds:KeyInfo/ds:X509Data/ds:X509Certificate",
idpDescriptorNode);
NodeList keyDescriptorCertEncryptionNodes = Util.query(xmlDocument, "./md:KeyDescriptor[not(contains(@use, \"signing\"))]/ds:KeyInfo/ds:X509Data/ds:X509Certificate",
idpDescriptorNode);
if (keyDescriptorCertSigningNodes.getLength() > 0 || keyDescriptorCertEncryptionNodes.getLength() > 0) {
boolean hasEncryptionCert = keyDescriptorCertEncryptionNodes.getLength() > 0;
String encryptionCert = null;
if (hasEncryptionCert) {
encryptionCert = keyDescriptorCertEncryptionNodes.item(0).getTextContent();
metadataInfo.put(SettingsBuilder.IDP_X509CERT_PROPERTY_KEY, encryptionCert);
}
if (keyDescriptorCertSigningNodes.getLength() > 0) {
int index = 0;
for (int i = 0; i < keyDescriptorCertSigningNodes.getLength(); i++) {
String signingCert = keyDescriptorCertSigningNodes.item(i).getTextContent();
if (i == 0 && !hasEncryptionCert) {
metadataInfo.put(SettingsBuilder.IDP_X509CERT_PROPERTY_KEY, signingCert);
} else if (!hasEncryptionCert || !encryptionCert.equals(signingCert)) {
metadataInfo.put(SettingsBuilder.IDP_X509CERTMULTI_PROPERTY_KEY + "." + (index++), signingCert);
}
}
}
}
NodeList nameIdFormatNodes = Util.query(xmlDocument, "./md:NameIDFormat", idpDescriptorNode);
for (int i = 0; i < nameIdFormatNodes.getLength(); i++) {
String nameIdFormat = nameIdFormatNodes.item(i).getTextContent();
if (nameIdFormat != null && (desiredNameIdFormat == null || desiredNameIdFormat.equals(nameIdFormat))) {
metadataInfo.put(SettingsBuilder.SP_NAMEIDFORMAT_PROPERTY_KEY, nameIdFormat);
break;
}
}
}
} catch (XPathException e) {
String errorMsg = "Error parsing metadata. " + e.getMessage();
LOGGER.error(errorMsg, e);
throw e;
}
return metadataInfo;
}
/**
* Get IdP Metadata Info from XML Document
*
* @param xmlDocument
* XML document hat contains IdP metadata
* @param entityId
* Entity Id of the desired IdP, if no entity Id is provided and the XML metadata contains more than one IDPSSODescriptor, the first is returned
*
* @return Mapped values with metadata info in Saml2Settings format
* @throws XPathException
*/
public static Map parseXML(Document xmlDocument, String entityId) throws XPathException {
return parseXML(xmlDocument, entityId, null, Constants.BINDING_HTTP_REDIRECT, Constants.BINDING_HTTP_REDIRECT);
}
/**
* Get IdP Metadata Info from XML Document
*
* @param xmlDocument
* XML document hat contains IdP metadata
*
* @return Mapped values with metadata info in Saml2Settings format
* @throws XPathException
*/
public static Map parseXML(Document xmlDocument) throws XPathException {
return parseXML(xmlDocument, null);
}
/**
* Get IdP Metadata Info from XML file
*
* @param xmlDocument
* XML document hat contains IdP metadata
* @param entityId
* Entity Id of the desired IdP, if no entity Id is provided and the XML metadata contains more than one IDPSSODescriptor, the first is returned
* @param desiredNameIdFormat
* If available on IdP metadata, use that nameIdFormat
* @param desiredSSOBinding
* Parse specific binding SSO endpoint.
* @param desiredSLOBinding
* Parse specific binding SLO endpoint.
*
* @return Mapped values with metadata info in Saml2Settings format
* @throws Exception
*/
public static Map parseFileXML(String xmlFileName, String entityId, String desiredNameIdFormat, String desiredSSOBinding, String desiredSLOBinding) throws Exception {
ClassLoader classLoader = IdPMetadataParser.class.getClassLoader();
try (InputStream inputStream = classLoader.getResourceAsStream(xmlFileName)) {
if (inputStream != null) {
Document xmlDocument = Util.parseXML(new InputSource(inputStream));
return parseXML(xmlDocument, entityId, desiredNameIdFormat, desiredSSOBinding, desiredSLOBinding);
} else {
throw new Exception("XML file '" + xmlFileName + "' not found in the classpath");
}
} catch (Exception e) {
String errorMsg = "XML file'" + xmlFileName + "' cannot be loaded." + e.getMessage();
LOGGER.error(errorMsg, e);
throw new Error(errorMsg, Error.SETTINGS_FILE_NOT_FOUND);
}
}
/**
* Get IdP Metadata Info from XML file
*
* @param xmlDocument
* XML document hat contains IdP metadata
* @param entityId
* Entity Id of the desired IdP, if no entity Id is provided and the XML metadata contains more than one IDPSSODescriptor, the first is returned
*
* @return Mapped values with metadata info in Saml2Settings format
* @throws Exception
*/
public static Map parseFileXML(String xmlFileName, String entityId) throws Exception {
return parseFileXML(xmlFileName, entityId, null, Constants.BINDING_HTTP_REDIRECT, Constants.BINDING_HTTP_REDIRECT);
}
/**
* Get IdP Metadata Info from XML file
*
* @param xmlDocument
* XML document hat contains IdP metadata
*
* @return Mapped values with metadata info in Saml2Settings format
* @throws Exception
*/
public static Map parseFileXML(String xmlFileName) throws Exception {
return parseFileXML(xmlFileName, null);
}
/**
* Get IdP Metadata Info from XML file
*
* @param xmlDocument
* XML document hat contains IdP metadata
* @param entityId
* Entity Id of the desired IdP, if no entity Id is provided and the XML metadata contains more than one IDPSSODescriptor, the first is returned
* @param desiredNameIdFormat
* If available on IdP metadata, use that nameIdFormat
* @param desiredSSOBinding
* Parse specific binding SSO endpoint.
* @param desiredSLOBinding
* Parse specific binding SLO endpoint.
*
* @return Mapped values with metadata info in Saml2Settings format
* @throws Exception
*/
public static Map parseRemoteXML(URL xmlURL, String entityId, String desiredNameIdFormat, String desiredSSOBinding, String desiredSLOBinding) throws Exception {
Document xmlDocument = Util.parseXML(new InputSource(xmlURL.openStream()));
return parseXML(xmlDocument, entityId, desiredNameIdFormat, desiredSSOBinding, desiredSLOBinding);
}
/**
* Get IdP Metadata Info from XML file
*
* @param xmlDocument
* XML document hat contains IdP metadata
* @param entityId
* Entity Id of the desired IdP, if no entity Id is provided and the XML metadata contains more than one IDPSSODescriptor, the first is returned
*
* @return Mapped values with metadata info in Saml2Settings format
* @throws Exception
*/
public static Map parseRemoteXML(URL xmlURL, String entityId) throws Exception {
return parseRemoteXML(xmlURL, entityId, null, Constants.BINDING_HTTP_REDIRECT, Constants.BINDING_HTTP_REDIRECT);
}
/**
* Get IdP Metadata Info from XML file
*
* @param xmlDocument
* XML document hat contains IdP metadata
*
* @return Mapped values with metadata info in Saml2Settings format
* @throws Exception
*/
public static Map parseRemoteXML(URL xmlURL) throws Exception {
return parseRemoteXML(xmlURL, null);
}
/**
* Inject metadata info into Saml2Settings
*
* @param settings
* the Saml2Settings object
* @param metadataInfo
* mapped values with metadata info in Saml2Settings format
*
* @return the Saml2Settings object with metadata info settings loaded
*/
public static Saml2Settings injectIntoSettings(Saml2Settings settings, Map metadataInfo) {
SettingsBuilder settingsBuilder = new SettingsBuilder().fromValues(metadataInfo);
settingsBuilder.build(settings);
return settings;
}
}
