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/**
* ============LICENSE_START=======================================================
* org.onap.aai
* ================================================================================
* Copyright © 2017-2018 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* Licensed 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.
* ============LICENSE_END=========================================================
*/
package org.onap.aai.aaf.auth;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import java.util.Objects;
import java.util.Properties;
import javax.servlet.http.HttpServletRequest;
import java.io.FileInputStream;
import java.io.IOException;
import java.security.cert.X509Certificate;
import java.util.stream.Collectors;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* The Class CertUtil provides cert related utility methods.
*/
public class CertUtil {
public static final String DEFAULT_CADI_ISSUERS = "CN=ATT AAF CADI Test Issuing " +
"CA 01, OU=CSO, O=ATT, C=US:CN=ATT AAF CADI Test Issuing CA 02, OU=CSO, O=ATT, C=US";
public static final String CADI_PROP_FILES = "cadi_prop_files";
public static final String CADI_ISSUERS_PROP_NAME = "cadi_x509_issuers";
public static final String CADI_ISSUERS_SEPARATOR = ":";
public static final String AAI_SSL_CLIENT_OU_HDR = "X-AAI-SSL-Client-OU";
public static final String AAI_SSL_ISSUER_HDR = "X-AAI-SSL-Issuer";
public static final String AAI_SSL_CLIENT_CN_HDR = "X-AAI-SSL-Client-CN";
public static final String AAI_SSL_CLIENT_O_HDR = "X-AAI-SSL-Client-O";
public static final String AAI_SSL_CLIENT_L_HDR = "X-AAI-SSL-Client-L";
public static final String AAI_SSL_CLIENT_ST_HDR = "X-AAI-SSL-Client-ST";
public static final String AAI_SSL_CLIENT_C_HDR = "X-AAI-SSL-Client-C";
public static final String AAF_USER_CHAIN_HDR = "USER_CHAIN";
public static final String AAF_ID = "<AAF-ID>";
private static final Logger LOGGER = LoggerFactory.getLogger(CertUtil.class);
public static String getAaiSslClientOuHeader(HttpServletRequest hsr) {
return (hsr.getHeader(AAI_SSL_CLIENT_OU_HDR));
}
public static boolean isHaProxy(HttpServletRequest hsr) {
String haProxyUser = "";
if (Objects.isNull(hsr.getHeader(AAI_SSL_CLIENT_CN_HDR)) || Objects.isNull(hsr.getHeader(AAI_SSL_CLIENT_OU_HDR))
|| Objects.isNull(hsr.getHeader(AAI_SSL_CLIENT_O_HDR))
|| Objects.isNull(hsr.getHeader(AAI_SSL_CLIENT_L_HDR))
|| Objects.isNull(hsr.getHeader(AAI_SSL_CLIENT_ST_HDR))
|| Objects.isNull(hsr.getHeader(AAI_SSL_CLIENT_C_HDR))) {
haProxyUser = "";
} else {
haProxyUser = String.format("CN=%s, OU=%s, O=\"%s\", L=%s, ST=%s, C=%s",
Objects.toString(hsr.getHeader(AAI_SSL_CLIENT_CN_HDR), ""),
Objects.toString(hsr.getHeader(AAI_SSL_CLIENT_OU_HDR), ""),
Objects.toString(hsr.getHeader(AAI_SSL_CLIENT_O_HDR), ""),
Objects.toString(hsr.getHeader(AAI_SSL_CLIENT_L_HDR), ""),
Objects.toString(hsr.getHeader(AAI_SSL_CLIENT_ST_HDR), ""),
Objects.toString(hsr.getHeader(AAI_SSL_CLIENT_C_HDR), "")).toLowerCase();
}
if (!haProxyUser.isEmpty()) {
LOGGER.debug("isHaProxy haProxyUser=" + haProxyUser);
return true;
}
LOGGER.debug("isHaProxy haProxyUser not found");
return false;
}
public static String getMechId(HttpServletRequest hsr) {
String mechId = null;
String ou = getAaiSslClientOuHeader(hsr);
if ((ou != null) && (!ou.isEmpty())) {
String[] parts = ou.split(CADI_ISSUERS_SEPARATOR);
if (parts != null && parts.length >= 1) {
mechId = parts[0];
}
}
LOGGER.debug("getMechId mechId=" + mechId);
return (mechId);
}
public static String getCertIssuer(HttpServletRequest hsr) {
String issuer = hsr.getHeader(AAI_SSL_ISSUER_HDR);
if (issuer != null && !issuer.isEmpty()) {
LOGGER.debug("getCertIssuer issuer from header " + AAI_SSL_ISSUER_HDR + " " + issuer);
// the haproxy header replaces the ', ' with '/' and reverses on the '/' need to undo that.
List<String> broken = Arrays.asList(issuer.split("/"));
broken = broken.stream().filter(s -> !s.isEmpty()).collect(Collectors.toList());
Collections.reverse(broken);
issuer = String.join(", ", broken);
} else {
if (hsr.getAttribute("javax.servlet.request.cipher_suite") != null) {
X509Certificate[] certChain =
(X509Certificate[]) hsr.getAttribute("javax.servlet.request.X509Certificate");
if (certChain != null && certChain.length > 0) {
X509Certificate clientCert = certChain[0];
issuer = clientCert.getIssuerX500Principal().getName();
LOGGER.debug("getCertIssuer issuer from client cert " + issuer);
}
}
}
return issuer;
}
public static List<String> getCadiCertIssuers(Properties cadiProperties) {
List<String> defaultList = new ArrayList<>();
List<String> resultList = new ArrayList<String>();
String[] cadiIssuers = DEFAULT_CADI_ISSUERS.split(CADI_ISSUERS_SEPARATOR);
for (String issuer : cadiIssuers) {
defaultList.add(issuer.replaceAll("\\s+", "").toUpperCase());
}
try {
String certPropFileName = cadiProperties.getProperty(CADI_PROP_FILES);
String configuredIssuers = DEFAULT_CADI_ISSUERS;
Properties certProperties = new Properties();
if (certPropFileName != null) {
try (FileInputStream fis = new FileInputStream(certPropFileName)) {
certProperties.load(fis);
}
configuredIssuers = certProperties.getProperty(CADI_ISSUERS_PROP_NAME);
}
if ((configuredIssuers != null) && (!configuredIssuers.isEmpty())) {
cadiIssuers = configuredIssuers.split(CADI_ISSUERS_SEPARATOR);
for (String issuer : cadiIssuers) {
resultList.add(issuer.replaceAll("\\s+", "").toUpperCase());
}
}
} catch (IOException ioe) {
return (defaultList);
}
if (resultList.isEmpty()) {
return defaultList;
}
LOGGER.debug("getCadiCertIssuers " + resultList.toString());
return resultList;
}
public static String buildUserChainHeader(String user, String userChainPattern) {
// aaf.userchain.pattern=<AAF-ID>:${aaf.userchain.service.reference}:${aaf.userchain.auth.type}:AS
return (userChainPattern.replaceAll(AAF_ID, user));
}
}
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