aai-aaf-auth/src/main/java/org/onap/aai/aaf/auth/CertUtil.java

   1 /**
   2  * ============LICENSE_START=======================================================
   3  * org.onap.aai
   4  * ================================================================================
   5  * Copyright © 2017-2018 AT&T Intellectual Property. All rights reserved.
   6  * ================================================================================
   7  * Licensed under the Apache License, Version 2.0 (the "License");
   8  * you may not use this file except in compliance with the License.
   9  * You may obtain a copy of the License at
  10  *
  11  *    http://www.apache.org/licenses/LICENSE-2.0
  12  *
  13  * Unless required by applicable law or agreed to in writing, software
  14  * distributed under the License is distributed on an "AS IS" BASIS,
  15  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  16  * See the License for the specific language governing permissions and
  17  * limitations under the License.
  18  * ============LICENSE_END=========================================================
  19  */
  20
  21 package org.onap.aai.aaf.auth;
  22
  23 import org.slf4j.Logger;
  24 import org.slf4j.LoggerFactory;
  25
  26 import javax.servlet.http.HttpServletRequest;
  27 import java.io.File;
  28 import java.io.FileInputStream;
  29 import java.io.IOException;
  30 import java.security.cert.X509Certificate;
  31 import java.util.*;
  32 import java.util.stream.Collectors;
  33
  34 /**
  35  * The Class CertUtil provides cert related utility methods.
  36  */
  37 public class CertUtil {
  38     public static final String DEFAULT_CADI_ISSUERS =
  39             "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";
  40     public static final String CADI_PROP_FILES = "cadi_prop_files";
  41     public static final String CADI_ISSUERS_PROP_NAME = "cadi_x509_issuers";
  42     public static final String CADI_ISSUERS_SEPARATOR = ":";
  43     public static final String AAI_SSL_CLIENT_OU_HDR = "X-AAI-SSL-Client-OU";
  44     public static final String AAI_SSL_ISSUER_HDR = "X-AAI-SSL-Issuer";
  45     public static final String AAI_SSL_CLIENT_CN_HDR = "X-AAI-SSL-Client-CN";
  46     public static final String AAI_SSL_CLIENT_O_HDR = "X-AAI-SSL-Client-O";
  47     public static final String AAI_SSL_CLIENT_L_HDR = "X-AAI-SSL-Client-L";
  48     public static final String AAI_SSL_CLIENT_ST_HDR = "X-AAI-SSL-Client-ST";
  49     public static final String AAI_SSL_CLIENT_C_HDR = "X-AAI-SSL-Client-C";
  50     public static final String AAF_USER_CHAIN_HDR = "USER_CHAIN";
  51     public static final String AAF_ID = "<AAF-ID>";
  52     private static final Logger LOGGER = LoggerFactory.getLogger(CertUtil.class);
  53
  54     public static String getAaiSslClientOuHeader(HttpServletRequest hsr) {
  55         return (hsr.getHeader(AAI_SSL_CLIENT_OU_HDR));
  56     }
  57
  58     public static boolean isHaProxy(HttpServletRequest hsr) {
  59
  60         String haProxyUser = "";
  61         if (Objects.isNull(hsr.getHeader(AAI_SSL_CLIENT_CN_HDR)) || Objects.isNull(hsr.getHeader(AAI_SSL_CLIENT_OU_HDR))
  62                 || Objects.isNull(hsr.getHeader(AAI_SSL_CLIENT_O_HDR))
  63                 || Objects.isNull(hsr.getHeader(AAI_SSL_CLIENT_L_HDR))
  64                 || Objects.isNull(hsr.getHeader(AAI_SSL_CLIENT_ST_HDR))
  65                 || Objects.isNull(hsr.getHeader(AAI_SSL_CLIENT_C_HDR))) {
  66             haProxyUser = "";
  67         } else {
  68             haProxyUser = String.format("CN=%s, OU=%s, O=\"%s\", L=%s, ST=%s, C=%s",
  69                     Objects.toString(hsr.getHeader(AAI_SSL_CLIENT_CN_HDR), ""),
  70                     Objects.toString(hsr.getHeader(AAI_SSL_CLIENT_OU_HDR), ""),
  71                     Objects.toString(hsr.getHeader(AAI_SSL_CLIENT_O_HDR), ""),
  72                     Objects.toString(hsr.getHeader(AAI_SSL_CLIENT_L_HDR), ""),
  73                     Objects.toString(hsr.getHeader(AAI_SSL_CLIENT_ST_HDR), ""),
  74                     Objects.toString(hsr.getHeader(AAI_SSL_CLIENT_C_HDR), "")).toLowerCase();
  75         }
  76         if (!haProxyUser.isEmpty()) {
  77             LOGGER.debug("isHaProxy haProxyUser=" + haProxyUser);
  78             return true;
  79         }
  80         LOGGER.debug("isHaProxy haProxyUser not found");
  81         return false;
  82     }
  83
  84     public static String getMechId(HttpServletRequest hsr) {
  85         String mechId = null;
  86         String ou = getAaiSslClientOuHeader(hsr);
  87         if ((ou != null) && (!ou.isEmpty())) {
  88             String[] parts = ou.split(CADI_ISSUERS_SEPARATOR);
  89             if (parts != null && parts.length >= 1) {
  90                 mechId = parts[0];
  91             }
  92         }
  93         LOGGER.debug("getMechId mechId=" + mechId);
  94         return (mechId);
  95     }
  96
  97     public static String getCertIssuer(HttpServletRequest hsr) {
  98         String issuer = hsr.getHeader(AAI_SSL_ISSUER_HDR);
  99         if (issuer != null && !issuer.isEmpty()) {
 100             LOGGER.debug("getCertIssuer issuer from header " + AAI_SSL_ISSUER_HDR + " " + issuer);
 101             // the haproxy header replaces the ', ' with '/' and reverses on the '/' need to undo that.
 102             List<String> broken = Arrays.asList(issuer.split("/"));
 103             broken = broken.stream().filter(s -> !s.isEmpty()).collect(Collectors.toList());
 104             Collections.reverse(broken);
 105             issuer = String.join(", ", broken);
 106         } else {
 107             if (hsr.getAttribute("javax.servlet.request.cipher_suite") != null) {
 108                 X509Certificate[] certChain =
 109                         (X509Certificate[]) hsr.getAttribute("javax.servlet.request.X509Certificate");
 110                 if (certChain != null && certChain.length > 0) {
 111                     X509Certificate clientCert = certChain[0];
 112                     issuer = clientCert.getIssuerX500Principal().getName();
 113                     LOGGER.debug("getCertIssuer issuer from client cert " + issuer);
 114                 }
 115             }
 116         }
 117         return issuer;
 118     }
 119
 120     public static List<String> getCadiCertIssuers(Properties cadiProperties) {
 121
 122         List<String> defaultList = new ArrayList<String>();
 123         List<String> resultList = new ArrayList<String>();
 124
 125         String[] cIssuers = DEFAULT_CADI_ISSUERS.split(CADI_ISSUERS_SEPARATOR);
 126         for (String issuer : cIssuers) {
 127             defaultList.add(issuer.replaceAll("\\s+", "").toUpperCase());
 128         }
 129         try {
 130             String certPropFileName = cadiProperties.getProperty(CADI_PROP_FILES);
 131             String configuredIssuers = DEFAULT_CADI_ISSUERS;
 132             Properties certProperties = new Properties();
 133             if (certPropFileName != null) {
 134                 certProperties.load(new FileInputStream(new File(certPropFileName)));
 135                 configuredIssuers = certProperties.getProperty(CADI_ISSUERS_PROP_NAME);
 136             }
 137             if ((configuredIssuers != null) && (!configuredIssuers.isEmpty())) {
 138                 cIssuers = configuredIssuers.split(CADI_ISSUERS_SEPARATOR);
 139                 for (String issuer : cIssuers) {
 140                     resultList.add(issuer.replaceAll("\\s+", "").toUpperCase());
 141                 }
 142             }
 143         } catch (IOException ioe) {
 144             return (defaultList);
 145         }
 146         if (resultList.isEmpty()) {
 147             return defaultList;
 148         }
 149         LOGGER.debug("getCadiCertIssuers " + resultList.toString());
 150         return resultList;
 151     }
 152
 153     public static String buildUserChainHeader(String user, String userChainPattern) {
 154         // aaf.userchain.pattern=<AAF-ID>:${aaf.userchain.service.reference}:${aaf.userchain.auth.type}:AS
 155         return (userChainPattern.replaceAll(AAF_ID, user));
 156     }
 157 }