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SPInitLogoutRequestProcessor.java
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SPInitLogoutRequestProcessor.java
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/*
* Copyright (c) 2010, WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
*
* WSO2 Inc. 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.wso2.carbon.identity.sso.saml.processors;
import org.apache.commons.lang.StringUtils;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.opensaml.saml2.core.LogoutRequest;
import org.opensaml.saml2.core.LogoutResponse;
import org.opensaml.saml2.core.SessionIndex;
import org.wso2.carbon.context.PrivilegedCarbonContext;
import org.wso2.carbon.context.RegistryType;
import org.wso2.carbon.identity.application.common.util.IdentityApplicationManagementUtil;
import org.wso2.carbon.identity.base.IdentityException;
import org.wso2.carbon.identity.core.model.SAMLSSOServiceProviderDO;
import org.wso2.carbon.identity.core.persistence.IdentityPersistenceManager;
import org.wso2.carbon.identity.core.util.IdentityTenantUtil;
import org.wso2.carbon.identity.core.util.IdentityUtil;
import org.wso2.carbon.identity.sso.saml.SAMLSSOConstants;
import org.wso2.carbon.identity.sso.saml.SSOServiceProviderConfigManager;
import org.wso2.carbon.identity.sso.saml.builders.SingleLogoutMessageBuilder;
import org.wso2.carbon.identity.sso.saml.dto.SAMLSSOReqValidationResponseDTO;
import org.wso2.carbon.identity.sso.saml.session.SSOSessionPersistenceManager;
import org.wso2.carbon.identity.sso.saml.session.SessionInfoData;
import org.wso2.carbon.identity.sso.saml.util.LambdaExceptionUtils;
import org.wso2.carbon.identity.sso.saml.util.SAMLSSOUtil;
import org.wso2.carbon.identity.sso.saml.validators.ValidationResult;
import org.wso2.carbon.registry.core.Registry;
import org.wso2.carbon.user.api.UserStoreException;
import org.wso2.carbon.user.core.UserCoreConstants;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.function.Function;
public class SPInitLogoutRequestProcessor implements SPInitSSOLogoutRequestProcessor {
private static Log log = LogFactory.getLog(SPInitLogoutRequestProcessor.class);
private String defaultSigningAlgoUri = IdentityApplicationManagementUtil.getSigningAlgoURIByConfig();
private String defaultDigestAlgoUri = IdentityApplicationManagementUtil.getDigestAlgoURIByConfig();
/**
* @param logoutRequest
* @param sessionId
* @param queryString
* @return
* @throws IdentityException
*/
public SAMLSSOReqValidationResponseDTO process(LogoutRequest logoutRequest, String sessionId,
String queryString) throws IdentityException {
SAMLSSOReqValidationResponseDTO reqValidationResponseDTO = new SAMLSSOReqValidationResponseDTO();
reqValidationResponseDTO.setLogOutReq(true);
try {
// List of validators that we need to run before processing the logout.
List<Function<LogoutRequest, ValidationResult<SAMLSSOReqValidationResponseDTO>>> logoutRequestValidators =
new ArrayList<>();
// Validate logout request bean.
logoutRequestValidators.add(LambdaExceptionUtils.rethrowFunction(this::validateLogoutRequest));
// Validate the issuer of the logout request.
logoutRequestValidators.add(LambdaExceptionUtils.rethrowFunction(this::validateIssuer));
// Validate the subject of the logout request.
logoutRequestValidators.add(LambdaExceptionUtils.rethrowFunction(this::validateSubject));
// Validate session indexes of the logout request.
logoutRequestValidators.add(LambdaExceptionUtils.rethrowFunction(this::validateSessionIndexes));
// Run all validators against the logout request to validate.
for (Function<LogoutRequest, ValidationResult<SAMLSSOReqValidationResponseDTO>> validator :
logoutRequestValidators) {
ValidationResult<SAMLSSOReqValidationResponseDTO> validationResult = validator.apply(logoutRequest);
if (!validationResult.getValidationStatus()) {
return validationResult.getValue();
}
}
// Validate whether we have principle session.
ValidationResult<SAMLSSOReqValidationResponseDTO> validationResult =
validatePrincipleSession(sessionId, logoutRequest);
if (!validationResult.getValidationStatus()) {
return validationResult.getValue();
}
String issuer = logoutRequest.getIssuer().getValue();
// Get the sessions from the SessionPersistenceManager and prepare the logout responses.
SSOSessionPersistenceManager ssoSessionPersistenceManager = SSOSessionPersistenceManager
.getPersistenceManager();
String sessionIndex = logoutRequest.getSessionIndexes().size() > 0 ? logoutRequest
.getSessionIndexes().get(0).getSessionIndex() : null;
SessionInfoData sessionInfoData = ssoSessionPersistenceManager.getSessionInfo(sessionIndex);
String subject = sessionInfoData.getSubject(issuer);
Map<String, SAMLSSOServiceProviderDO> sessionsList = sessionInfoData.getServiceProviderList();
SAMLSSOServiceProviderDO logoutReqIssuer = sessionsList.get(issuer);
issuer = getTenantAwareIssuer(issuer, sessionInfoData);
// Validate whether the principle session index we have is same as the logout request session index.
if (logoutReqIssuer.isDoSingleLogout()) {
validationResult = validateRequestSessionIndex(logoutRequest, logoutReqIssuer, sessionIndex);
if (!validationResult.getValidationStatus()) {
return validationResult.getValue();
}
}
// Validate signature of the logout request.
if (logoutReqIssuer.isDoValidateSignatureInRequests()) {
validationResult = validateSignature(logoutRequest, logoutReqIssuer, subject, queryString);
if (!validationResult.getValidationStatus()) {
return validationResult.getValue();
}
}
SAMLSSOServiceProviderDO serviceProviderDO = sessionsList.get(issuer);
reqValidationResponseDTO.setIssuer(serviceProviderDO.getIssuer());
reqValidationResponseDTO.setDoSignResponse(serviceProviderDO.isDoSignResponse());
reqValidationResponseDTO.setSigningAlgorithmUri(serviceProviderDO.getSigningAlgorithmUri());
reqValidationResponseDTO.setDigestAlgorithmUri(serviceProviderDO.getDigestAlgorithmUri());
if (StringUtils.isNotBlank(serviceProviderDO.getSloResponseURL())) {
reqValidationResponseDTO.setAssertionConsumerURL(serviceProviderDO.getSloResponseURL());
} else {
reqValidationResponseDTO.setAssertionConsumerURL(serviceProviderDO.getAssertionConsumerUrl());
}
SingleLogoutMessageBuilder logoutMsgBuilder = new SingleLogoutMessageBuilder();
LogoutResponse logoutResponse = logoutMsgBuilder.buildLogoutResponse(
logoutRequest.getID(),
SAMLSSOConstants.StatusCodes.SUCCESS_CODE,
null,
reqValidationResponseDTO.getAssertionConsumerURL(),
reqValidationResponseDTO.isDoSignResponse(),
SAMLSSOUtil.getTenantDomainFromThreadLocal(),
reqValidationResponseDTO.getSigningAlgorithmUri(),
reqValidationResponseDTO.getDigestAlgorithmUri());
reqValidationResponseDTO.setLogoutResponse(SAMLSSOUtil.encode(SAMLSSOUtil.marshall(logoutResponse)));
reqValidationResponseDTO.setValid(true);
return reqValidationResponseDTO;
} catch (UserStoreException | IdentityException | IOException e) {
throw IdentityException.error("Error Processing the Logout Request", e);
}
}
private String getTenantAwareIssuer(String issuer, SessionInfoData sessionInfoData) throws UserStoreException,
IdentityException {
String tenantDomain = null;
if (StringUtils.isNotBlank(issuer) && issuer.contains(UserCoreConstants.TENANT_DOMAIN_COMBINER)) {
tenantDomain = issuer.substring(issuer.lastIndexOf('@') + 1);
issuer = issuer.substring(0, issuer.lastIndexOf('@'));
}
// Set the tenant domain to thread local variable if it isn't already set.
setTenantDomainToThreadLocal(issuer, sessionInfoData, tenantDomain);
return issuer;
}
/**
* Builds the SAML error response and sets the compressed value to the reqValidationResponseDTO
*
* @param id
* @param status
* @param statMsg
* @param destination
* @return
* @throws IdentityException
*/
private SAMLSSOReqValidationResponseDTO buildErrorResponse(String id, String status, String statMsg, String
destination, String responseSigningAlgorithmUri, String responseDigestAlgorithmUri)
throws IdentityException {
SAMLSSOReqValidationResponseDTO reqValidationResponseDTO = new SAMLSSOReqValidationResponseDTO();
LogoutResponse logoutResp = new SingleLogoutMessageBuilder().buildLogoutResponse(id, status, statMsg,
destination, false, null, responseSigningAlgorithmUri, responseDigestAlgorithmUri);
reqValidationResponseDTO.setLogOutReq(true);
reqValidationResponseDTO.setValid(false);
try {
reqValidationResponseDTO.setResponse(SAMLSSOUtil.compressResponse(SAMLSSOUtil.marshall(logoutResp)));
} catch (IOException e) {
throw IdentityException.error("Error while creating logout response", e);
}
return reqValidationResponseDTO;
}
private SAMLSSOServiceProviderDO getServiceProviderConfig(String issuer)
throws IdentityException {
try {
SSOServiceProviderConfigManager stratosIdpConfigManager = SSOServiceProviderConfigManager
.getInstance();
SAMLSSOServiceProviderDO ssoIdpConfigs = stratosIdpConfigManager
.getServiceProvider(issuer);
if (ssoIdpConfigs == null) {
IdentityTenantUtil.initializeRegistry(PrivilegedCarbonContext.getThreadLocalCarbonContext()
.getTenantId(),
PrivilegedCarbonContext.getThreadLocalCarbonContext().getTenantDomain());
IdentityPersistenceManager persistenceManager = IdentityPersistenceManager
.getPersistanceManager();
Registry registry = (Registry) PrivilegedCarbonContext.getThreadLocalCarbonContext().getRegistry
(RegistryType.SYSTEM_CONFIGURATION);
ssoIdpConfigs = persistenceManager.getServiceProvider(registry, issuer);
}
return ssoIdpConfigs;
} catch (Exception e) {
throw new IdentityException("Error while reading Service Provider configurations", e);
}
}
private SAMLSSOReqValidationResponseDTO buildErrorResponse(String id, String status, String statMsg, String
destination, String responseSigningAlgorithmUri, String responseDigestAlgorithmUri,
String issuer) throws IdentityException, IOException {
SAMLSSOServiceProviderDO providerDO = getServiceProviderConfig(issuer);
SAMLSSOReqValidationResponseDTO reqValidationResponseDTO = new SAMLSSOReqValidationResponseDTO();
LogoutResponse logoutResp = new SingleLogoutMessageBuilder().buildLogoutResponse(id, status, statMsg,
destination, false, null, responseSigningAlgorithmUri, responseDigestAlgorithmUri);
reqValidationResponseDTO.setLogOutReq(true);
reqValidationResponseDTO.setValid(false);
reqValidationResponseDTO.setResponse(SAMLSSOUtil.compressResponse(SAMLSSOUtil.marshall(logoutResp)));
if (providerDO != null) {
// use only default default ACS
if (StringUtils.isNotBlank(providerDO.getSloResponseURL())) {
reqValidationResponseDTO.setAssertionConsumerURL(providerDO.getSloResponseURL());
}
if (StringUtils.isNotBlank(providerDO.getAssertionConsumerUrl())) {
reqValidationResponseDTO.setAssertionConsumerURL(providerDO.getAssertionConsumerUrl());
} else {
reqValidationResponseDTO.setAssertionConsumerURL(providerDO.getDefaultAssertionConsumerUrl());
}
reqValidationResponseDTO.setIssuer(issuer);
}
return reqValidationResponseDTO;
}
private ValidationResult<SAMLSSOReqValidationResponseDTO> validateLogoutRequest(LogoutRequest logoutRequest) {
ValidationResult<SAMLSSOReqValidationResponseDTO> validationResult = new ValidationResult<>();
validationResult.setValidationStatus(true);
if (logoutRequest == null) {
SAMLSSOReqValidationResponseDTO samlssoReqValidationResponseDTO = new SAMLSSOReqValidationResponseDTO();
samlssoReqValidationResponseDTO.setLogOutReq(true);
validationResult.setValue(samlssoReqValidationResponseDTO);
validationResult.setValidationStatus(false);
}
return validationResult;
}
private ValidationResult<SAMLSSOReqValidationResponseDTO> validateIssuer(LogoutRequest logoutRequest)
throws IdentityException {
ValidationResult<SAMLSSOReqValidationResponseDTO> validationResult = new ValidationResult<>();
validationResult.setValidationStatus(true);
if (logoutRequest.getIssuer() == null) {
String message = "Issuer should be mentioned in the Logout Request";
log.error(message);
validationResult.setValue(buildErrorResponse(logoutRequest.getID(),
SAMLSSOConstants.StatusCodes.REQUESTOR_ERROR, message, logoutRequest.getDestination(),
defaultSigningAlgoUri, defaultDigestAlgoUri));
validationResult.setValidationStatus(false);
} else if (logoutRequest.getIssuer().getValue() == null) {
String message = "Issuer value cannot be null in the Logout Request";
log.error(message);
validationResult.setValue(buildErrorResponse(logoutRequest.getID(),
SAMLSSOConstants.StatusCodes.REQUESTOR_ERROR, message, logoutRequest.getDestination(),
defaultSigningAlgoUri, defaultDigestAlgoUri));
validationResult.setValidationStatus(false);
}
return validationResult;
}
private ValidationResult<SAMLSSOReqValidationResponseDTO> validateSubject(LogoutRequest logoutRequest)
throws IOException, IdentityException {
String issuer = logoutRequest.getIssuer().getValue();
ValidationResult<SAMLSSOReqValidationResponseDTO> validationResult = new ValidationResult<>();
validationResult.setValidationStatus(true);
if (logoutRequest.getNameID() == null && logoutRequest.getBaseID() == null
&& logoutRequest.getEncryptedID() == null) {
String message = "Subject Name should be specified in the Logout Request";
log.error(message);
validationResult.setValue(buildErrorResponse(logoutRequest.getID(),
SAMLSSOConstants.StatusCodes.REQUESTOR_ERROR, message, logoutRequest.getDestination(),
defaultSigningAlgoUri, defaultDigestAlgoUri, issuer));
validationResult.setValidationStatus(false);
}
return validationResult;
}
private ValidationResult<SAMLSSOReqValidationResponseDTO> validateSessionIndexes(LogoutRequest logoutRequest)
throws IOException, IdentityException {
String issuer = logoutRequest.getIssuer().getValue();
ValidationResult<SAMLSSOReqValidationResponseDTO> validationResult = new ValidationResult<>();
validationResult.setValidationStatus(true);
if (logoutRequest.getSessionIndexes() == null) {
String message = "At least one Session Index should be present in the Logout Request";
log.error(message);
validationResult.setValue(buildErrorResponse(logoutRequest.getID(),
SAMLSSOConstants.StatusCodes.REQUESTOR_ERROR, message, logoutRequest.getDestination(),
defaultSigningAlgoUri, defaultDigestAlgoUri,
issuer));
validationResult.setValidationStatus(false);
}
return validationResult;
}
private ValidationResult<SAMLSSOReqValidationResponseDTO> validatePrincipleSession(String sessionId,
LogoutRequest logoutRequest)
throws IOException, IdentityException {
String issuer = logoutRequest.getIssuer().getValue();
ValidationResult<SAMLSSOReqValidationResponseDTO> validationResult = new ValidationResult<>();
validationResult.setValidationStatus(true);
if (StringUtils.isBlank(sessionId)) {
String message = "Session was already Expired";
log.error("ssoTokenId cookie not found in the logout request");
validationResult.setValue(buildErrorResponse(logoutRequest.getID(), SAMLSSOConstants.StatusCodes.REQUESTOR_ERROR,
message, logoutRequest.getDestination(), defaultSigningAlgoUri, defaultDigestAlgoUri,
issuer));
validationResult.setValidationStatus(false);
}
// Get the sessions from the SessionPersistenceManager and prepare the logout responses.
SSOSessionPersistenceManager ssoSessionPersistenceManager = SSOSessionPersistenceManager
.getPersistenceManager();
String sessionIndex = ssoSessionPersistenceManager.getSessionIndexFromTokenId(sessionId);
if (StringUtils.isBlank(sessionIndex)) {
String message = "Error while retrieving the Session Index ";
log.error("Error in retrieving sessionIndex : " + sessionIndex);
SAMLSSOReqValidationResponseDTO reqValidationResponseDTO = buildErrorResponse(logoutRequest.getID(),
SAMLSSOConstants.StatusCodes.REQUESTOR_ERROR, message, null, defaultSigningAlgoUri,
defaultDigestAlgoUri, issuer);
reqValidationResponseDTO.setLogoutFromAuthFramework(true);
validationResult.setValue(reqValidationResponseDTO);
validationResult.setValidationStatus(false);
}
SessionInfoData sessionInfoData = ssoSessionPersistenceManager.getSessionInfo(sessionIndex);
if (sessionInfoData == null) {
String message = "No Established Sessions corresponding to Session Indexes provided.";
log.error(message);
SAMLSSOReqValidationResponseDTO reqValidationResponseDTO = buildErrorResponse(logoutRequest.getID(),
SAMLSSOConstants.StatusCodes.REQUESTOR_ERROR, message, null, defaultSigningAlgoUri,
defaultDigestAlgoUri, issuer);
reqValidationResponseDTO.setLogoutFromAuthFramework(true);
validationResult.setValue(reqValidationResponseDTO);
validationResult.setValidationStatus(false);
}
return validationResult;
}
private ValidationResult<SAMLSSOReqValidationResponseDTO> validateRequestSessionIndex
(LogoutRequest logoutRequest, SAMLSSOServiceProviderDO logoutReqIssuer, String sessionIndex)
throws IOException, IdentityException {
String issuer = logoutRequest.getIssuer().getValue();
ValidationResult<SAMLSSOReqValidationResponseDTO> validationResult = new ValidationResult<>();
validationResult.setValidationStatus(true);
// Validate session index.
SessionIndex requestSessionIndex = logoutRequest.getSessionIndexes().size() > 0 ? logoutRequest
.getSessionIndexes().get(0) : null;
if (requestSessionIndex == null || !sessionIndex.equals(requestSessionIndex.getSessionIndex())) {
String message = "Session Index validation for Logout Request failed. " +
"Received: [" + (requestSessionIndex == null ? "null" : requestSessionIndex
.getSessionIndex()) + "]." + " Expected: [" + sessionIndex + "]";
log.error(message);
validationResult.setValue(buildErrorResponse(logoutRequest.getID(), SAMLSSOConstants.StatusCodes
.REQUESTOR_ERROR, message, logoutRequest.getDestination(), logoutReqIssuer
.getSigningAlgorithmUri(), logoutReqIssuer.getDigestAlgorithmUri(), issuer));
validationResult.setValidationStatus(false);
}
return validationResult;
}
private ValidationResult<SAMLSSOReqValidationResponseDTO> validateSignature(
LogoutRequest logoutRequest, SAMLSSOServiceProviderDO logoutReqIssuer, String subject, String queryString)
throws IdentityException, IOException {
String issuer = logoutRequest.getIssuer().getValue();
ValidationResult<SAMLSSOReqValidationResponseDTO> validationResult = new ValidationResult<>();
validationResult.setValidationStatus(true);
// Validate 'Destination'
List<String> idpUrlSet = SAMLSSOUtil.getDestinationFromTenantDomain(SAMLSSOUtil
.getTenantDomainFromThreadLocal());
if (logoutRequest.getDestination() == null
|| !idpUrlSet.contains(logoutRequest.getDestination())) {
String message = "Destination validation for Logout Request failed. " +
"Received: [" + logoutRequest.getDestination() +
"]." + " Expected: [" + StringUtils.join(idpUrlSet, ',') + "]";
log.error(message);
validationResult.setValue(buildErrorResponse(logoutRequest.getID(), SAMLSSOConstants.StatusCodes
.REQUESTOR_ERROR, message, logoutRequest.getDestination(), logoutReqIssuer
.getSigningAlgorithmUri(), logoutReqIssuer.getDigestAlgorithmUri(), issuer));
validationResult.setValidationStatus(false);
}
if (!SAMLSSOUtil.validateLogoutRequestSignature(logoutRequest, logoutReqIssuer.getX509Certificate(),
queryString)) {
String message = "Signature validation for Logout Request failed";
log.error(message);
validationResult.setValue(buildErrorResponse(logoutRequest.getID(), SAMLSSOConstants.StatusCodes
.REQUESTOR_ERROR, message, logoutRequest.getDestination(), logoutReqIssuer
.getSigningAlgorithmUri(), logoutReqIssuer.getDigestAlgorithmUri()));
validationResult.setValidationStatus(false);
}
return validationResult;
}
private void setTenantDomainToThreadLocal(String issuer, SessionInfoData sessionInfoData, String tenantDomain)
throws UserStoreException, IdentityException {
if (IdentityUtil.isBlank(SAMLSSOUtil.getTenantDomainFromThreadLocal())) {
if (StringUtils.isNotBlank(issuer) && StringUtils.isNotBlank(tenantDomain)) {
SAMLSSOUtil.setTenantDomainInThreadLocal(tenantDomain);
if (log.isDebugEnabled()) {
log.debug("Tenant Domain: " + tenantDomain + " & Issuer name: " + issuer + "has been " +
"split");
}
} else {
SAMLSSOServiceProviderDO serviceProvider = sessionInfoData.getServiceProviderList().get(issuer);
if (serviceProvider != null) {
SAMLSSOUtil.setTenantDomainInThreadLocal(serviceProvider.getTenantDomain());
} else {
throw IdentityException.error("Service provider :" + issuer + " does not exist in session " +
"info data.");
}
}
}
}
}