certService/src/main/java/org/onap/oom/certservice/certification/CertificationProvider.java

   1 /*
   2  * ============LICENSE_START=======================================================
   3  * Cert Service
   4  * ================================================================================
   5  * Copyright (C) 2020-2021 Nokia. 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.oom.certservice.certification;
  22
  23 import org.bouncycastle.openssl.jcajce.JcaMiscPEMGenerator;
  24 import org.bouncycastle.util.io.pem.PemObjectGenerator;
  25 import org.bouncycastle.util.io.pem.PemWriter;
  26 import org.onap.oom.certservice.certification.configuration.model.Cmpv2Server;
  27 import org.onap.oom.certservice.certification.model.CertificationResponseModel;
  28 import org.onap.oom.certservice.certification.model.CsrModel;
  29 import org.onap.oom.certservice.certification.model.OldCertificateModel;
  30 import org.onap.oom.certservice.cmpv2client.api.CmpClient;
  31 import org.onap.oom.certservice.cmpv2client.exceptions.CmpClientException;
  32 import org.onap.oom.certservice.cmpv2client.model.Cmpv2CertificationModel;
  33 import org.slf4j.Logger;
  34 import org.slf4j.LoggerFactory;
  35 import org.springframework.beans.factory.annotation.Autowired;
  36 import org.springframework.stereotype.Service;
  37
  38 import java.io.IOException;
  39 import java.io.StringWriter;
  40 import java.security.cert.X509Certificate;
  41 import java.util.List;
  42 import java.util.stream.Collectors;
  43
  44 @Service
  45 public class CertificationProvider {
  46
  47     private static final Logger LOGGER = LoggerFactory.getLogger(CertificationProvider.class);
  48
  49     private final CmpClient cmpClient;
  50
  51     @Autowired
  52     public CertificationProvider(CmpClient cmpClient) {
  53         this.cmpClient = cmpClient;
  54     }
  55
  56     public CertificationResponseModel executeInitializationRequest(CsrModel csrModel, Cmpv2Server server)
  57             throws CmpClientException {
  58         Cmpv2CertificationModel certificates = cmpClient.executeInitializationRequest(csrModel, server);
  59         return getCertificationResponseModel(certificates);
  60     }
  61
  62     public CertificationResponseModel executeKeyUpdateRequest(CsrModel csrModel, Cmpv2Server cmpv2Server,
  63         OldCertificateModel oldCertificateModel) throws CmpClientException {
  64         Cmpv2CertificationModel certificates = cmpClient.executeKeyUpdateRequest(csrModel, cmpv2Server, oldCertificateModel);
  65         return getCertificationResponseModel(certificates);
  66     }
  67
  68     public CertificationResponseModel executeCertificationRequest(CsrModel csrModel, Cmpv2Server cmpv2Server) throws CmpClientException {
  69         Cmpv2CertificationModel certificates = cmpClient.executeCertificationRequest(csrModel, cmpv2Server);
  70         return getCertificationResponseModel(certificates);
  71     }
  72
  73     private static List<String> convertFromX509CertificateListToPemList(List<X509Certificate> certificates) {
  74         return certificates.stream().map(CertificationProvider::convertFromX509CertificateToPem).filter(cert -> !cert.isEmpty())
  75                 .collect(Collectors.toList());
  76     }
  77
  78     private CertificationResponseModel getCertificationResponseModel(Cmpv2CertificationModel certificates) {
  79         return new CertificationResponseModel(
  80             convertFromX509CertificateListToPemList(certificates.getCertificateChain()),
  81             convertFromX509CertificateListToPemList(certificates.getTrustedCertificates()));
  82     }
  83
  84     private static String convertFromX509CertificateToPem(X509Certificate certificate) {
  85         StringWriter sw = new StringWriter();
  86         try (PemWriter pw = new PemWriter(sw)) {
  87             PemObjectGenerator gen = new JcaMiscPEMGenerator(certificate);
  88             pw.writeObject(gen);
  89         } catch (IOException e) {
  90             LOGGER.error("Exception occurred during convert of X509 certificate", e);
  91         }
  92         return sw.toString();
  93     }
  94 }