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 java.util.ArrayList;
  24 import java.util.Arrays;
  25 import java.util.Collections;
  26 import java.util.List;
  27 import java.util.Objects;
  28 import java.util.Properties;
  29
  30 import javax.servlet.http.HttpServletRequest;
  31 import java.io.FileInputStream;
  32 import java.io.IOException;
  33 import java.security.cert.X509Certificate;
  34 import java.util.stream.Collectors;
  35 import org.slf4j.Logger;
  36 import org.slf4j.LoggerFactory;
  37
  38 /**
  39  * The Class CertUtil provides cert related utility methods.
  40  */
  41 public class CertUtil {
  42     public static final String DEFAULT_CADI_ISSUERS = "CN=ATT AAF CADI Test Issuing " +
  43         "CA 01, OU=CSO, O=ATT, C=US:CN=ATT AAF CADI Test Issuing CA 02, OU=CSO, O=ATT, C=US";
  44     public static final String CADI_PROP_FILES = "cadi_prop_files";
  45     public static final String CADI_ISSUERS_PROP_NAME = "cadi_x509_issuers";
  46     public static final String CADI_ISSUERS_SEPARATOR = ":";
  47     public static final String AAI_SSL_CLIENT_OU_HDR = "X-AAI-SSL-Client-OU";
  48     public static final String AAI_SSL_ISSUER_HDR = "X-AAI-SSL-Issuer";
  49     public static final String AAI_SSL_CLIENT_CN_HDR = "X-AAI-SSL-Client-CN";
  50     public static final String AAI_SSL_CLIENT_O_HDR = "X-AAI-SSL-Client-O";
  51     public static final String AAI_SSL_CLIENT_L_HDR = "X-AAI-SSL-Client-L";
  52     public static final String AAI_SSL_CLIENT_ST_HDR = "X-AAI-SSL-Client-ST";
  53     public static final String AAI_SSL_CLIENT_C_HDR = "X-AAI-SSL-Client-C";
  54     public static final String AAF_USER_CHAIN_HDR = "USER_CHAIN";
  55     public static final String AAF_ID = "<AAF-ID>";
  56     private static final Logger LOGGER = LoggerFactory.getLogger(CertUtil.class);
  57
  58     public static String getAaiSslClientOuHeader(HttpServletRequest hsr) {
  59         return (hsr.getHeader(AAI_SSL_CLIENT_OU_HDR));
  60     }
  61
  62     public static boolean isHaProxy(HttpServletRequest hsr) {
  63
  64         String haProxyUser = "";
  65         if (Objects.isNull(hsr.getHeader(AAI_SSL_CLIENT_CN_HDR)) || Objects.isNull(hsr.getHeader(AAI_SSL_CLIENT_OU_HDR))
  66                 || Objects.isNull(hsr.getHeader(AAI_SSL_CLIENT_O_HDR))
  67                 || Objects.isNull(hsr.getHeader(AAI_SSL_CLIENT_L_HDR))
  68                 || Objects.isNull(hsr.getHeader(AAI_SSL_CLIENT_ST_HDR))
  69                 || Objects.isNull(hsr.getHeader(AAI_SSL_CLIENT_C_HDR))) {
  70             haProxyUser = "";
  71         } else {
  72             haProxyUser = String.format("CN=%s, OU=%s, O=\"%s\", L=%s, ST=%s, C=%s",
  73                     Objects.toString(hsr.getHeader(AAI_SSL_CLIENT_CN_HDR), ""),
  74                     Objects.toString(hsr.getHeader(AAI_SSL_CLIENT_OU_HDR), ""),
  75                     Objects.toString(hsr.getHeader(AAI_SSL_CLIENT_O_HDR), ""),
  76                     Objects.toString(hsr.getHeader(AAI_SSL_CLIENT_L_HDR), ""),
  77                     Objects.toString(hsr.getHeader(AAI_SSL_CLIENT_ST_HDR), ""),
  78                     Objects.toString(hsr.getHeader(AAI_SSL_CLIENT_C_HDR), "")).toLowerCase();
  79         }
  80         if (!haProxyUser.isEmpty()) {
  81             LOGGER.debug("isHaProxy haProxyUser=" + haProxyUser);
  82             return true;
  83         }
  84         LOGGER.debug("isHaProxy haProxyUser not found");
  85         return false;
  86     }
  87
  88     public static String getMechId(HttpServletRequest hsr) {
  89         String mechId = null;
  90         String ou = getAaiSslClientOuHeader(hsr);
  91         if ((ou != null) && (!ou.isEmpty())) {
  92             String[] parts = ou.split(CADI_ISSUERS_SEPARATOR);
  93             if (parts != null && parts.length >= 1) {
  94                 mechId = parts[0];
  95             }
  96         }
  97         LOGGER.debug("getMechId mechId=" + mechId);
  98         return (mechId);
  99     }
 100
 101     public static String getCertIssuer(HttpServletRequest hsr) {
 102         String issuer = hsr.getHeader(AAI_SSL_ISSUER_HDR);
 103         if (issuer != null && !issuer.isEmpty()) {
 104             LOGGER.debug("getCertIssuer issuer from header " + AAI_SSL_ISSUER_HDR + " " + issuer);
 105             // the haproxy header replaces the ', ' with '/' and reverses on the '/' need to undo that.
 106             List<String> broken = Arrays.asList(issuer.split("/"));
 107             broken = broken.stream().filter(s -> !s.isEmpty()).collect(Collectors.toList());
 108             Collections.reverse(broken);
 109             issuer = String.join(", ", broken);
 110         } else {
 111             if (hsr.getAttribute("javax.servlet.request.cipher_suite") != null) {
 112                 X509Certificate[] certChain =
 113                         (X509Certificate[]) hsr.getAttribute("javax.servlet.request.X509Certificate");
 114                 if (certChain != null && certChain.length > 0) {
 115                     X509Certificate clientCert = certChain[0];
 116                     issuer = clientCert.getIssuerX500Principal().getName();
 117                     LOGGER.debug("getCertIssuer issuer from client cert " + issuer);
 118                 }
 119             }
 120         }
 121         return issuer;
 122     }
 123
 124     public static List<String> getCadiCertIssuers(Properties cadiProperties) {
 125
 126         List<String> defaultList = new ArrayList<>();
 127         List<String> resultList = new ArrayList<String>();
 128
 129         String[] cadiIssuers = DEFAULT_CADI_ISSUERS.split(CADI_ISSUERS_SEPARATOR);
 130         for (String issuer : cadiIssuers) {
 131             defaultList.add(issuer.replaceAll("\\s+", "").toUpperCase());
 132         }
 133         try {
 134             String certPropFileName = cadiProperties.getProperty(CADI_PROP_FILES);
 135             String configuredIssuers = DEFAULT_CADI_ISSUERS;
 136             Properties certProperties = new Properties();
 137             if (certPropFileName != null) {
 138                 try (FileInputStream fis = new FileInputStream(certPropFileName)) {
 139                     certProperties.load(fis);
 140                 }
 141                 configuredIssuers = certProperties.getProperty(CADI_ISSUERS_PROP_NAME);
 142             }
 143             if ((configuredIssuers != null) && (!configuredIssuers.isEmpty())) {
 144                 cadiIssuers = configuredIssuers.split(CADI_ISSUERS_SEPARATOR);
 145                 for (String issuer : cadiIssuers) {
 146                     resultList.add(issuer.replaceAll("\\s+", "").toUpperCase());
 147                 }
 148             }
 149         } catch (IOException ioe) {
 150             return (defaultList);
 151         }
 152         if (resultList.isEmpty()) {
 153             return defaultList;
 154         }
 155         LOGGER.debug("getCadiCertIssuers " + resultList.toString());
 156         return resultList;
 157     }
 158
 159     public static String buildUserChainHeader(String user, String userChainPattern) {
 160         // aaf.userchain.pattern=<AAF-ID>:${aaf.userchain.service.reference}:${aaf.userchain.auth.type}:AS
 161         return (userChainPattern.replaceAll(AAF_ID, user));
 162     }
 163 }