1 files changed, 120 insertions, 0 deletions
diff --git a/certService/src/main/java/org/onap/aaf/certservice/certification/adapter/Cmpv2ClientAdapter.java b/certService/src/main/java/org/onap/aaf/certservice/certification/adapter/Cmpv2ClientAdapter.java
new file mode 100644
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--- /dev/null
+++ b/certService/src/main/java/org/onap/aaf/certservice/certification/adapter/Cmpv2ClientAdapter.java
@@ -0,0 +1,120 @@
+/*
+ * ============LICENSE_START=======================================================
+ * Cert Service
+ * ================================================================================
+ * Copyright (C) 2020 Nokia. 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.aaf.certservice.certification.adapter;
+
+import java.io.ByteArrayInputStream;
+import java.io.IOException;
+import java.io.StringWriter;
+import java.security.NoSuchProviderException;
+import java.security.PrivateKey;
+import java.security.cert.CertificateException;
+import java.security.cert.X509Certificate;
+import java.util.List;
+import java.util.stream.Collectors;
+import org.bouncycastle.cert.X509CertificateHolder;
+import org.bouncycastle.cert.X509v3CertificateBuilder;
+import org.bouncycastle.openssl.jcajce.JcaMiscPEMGenerator;
+import org.bouncycastle.operator.ContentSigner;
+import org.bouncycastle.operator.OperatorCreationException;
+import org.bouncycastle.pkcs.PKCS10CertificationRequest;
+import org.bouncycastle.util.io.pem.PemObjectGenerator;
+import org.bouncycastle.util.io.pem.PemWriter;
+import org.onap.aaf.certservice.certification.configuration.model.Cmpv2Server;
+import org.onap.aaf.certservice.certification.exception.Cmpv2ClientAdapterException;
+import org.onap.aaf.certservice.certification.model.CertificationModel;
+import org.onap.aaf.certservice.certification.model.CsrModel;
+import org.onap.aaf.certservice.cmpv2client.api.CmpClient;
+import org.onap.aaf.certservice.cmpv2client.exceptions.CmpClientException;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+
+@Component
+public class Cmpv2ClientAdapter {
+
+    private static final Logger LOGGER = LoggerFactory.getLogger(Cmpv2ClientAdapter.class);
+
+    private final CmpClient cmpClient;
+    private final CSRMetaBuilder csrMetaBuilder;
+    private final RSAContentSignerBuilder rsaContentSignerBuilder;
+    private final X509CertificateBuilder x509CertificateBuilder;
+    private final CertificateFactoryProvider certificateFactoryProvider;
+
+    @Autowired
+    public Cmpv2ClientAdapter(CmpClient cmpClient, CSRMetaBuilder csrMetaBuilder,
+            RSAContentSignerBuilder rsaContentSignerBuilder, X509CertificateBuilder x509CertificateBuilder,
+            CertificateFactoryProvider certificateFactoryProvider) {
+        this.cmpClient = cmpClient;
+        this.csrMetaBuilder = csrMetaBuilder;
+        this.rsaContentSignerBuilder = rsaContentSignerBuilder;
+        this.x509CertificateBuilder = x509CertificateBuilder;
+        this.certificateFactoryProvider = certificateFactoryProvider;
+    }
+
+    /**
+     * Uses CmpClient to call to Cmp Server and gather certificates data
+     *
+     * @param csrModel Certificate Signing Request from Service external  API
+     * @param server   Cmp Server configuration from cmpServers.json
+     * @return container for returned certificates
+     * @throws CmpClientException          Exceptions which comes from Cmp Client
+     * @throws Cmpv2ClientAdapterException Exceptions which comes from Adapter itself
+     */
+    public CertificationModel callCmpClient(CsrModel csrModel, Cmpv2Server server)
+            throws CmpClientException, Cmpv2ClientAdapterException {
+        List<List<X509Certificate>> certificates = cmpClient.createCertificate(server.getCaName(),
+                server.getCaMode().getProfile(), csrMetaBuilder.build(csrModel, server),
+                convertCSRToX509Certificate(csrModel.getCsr(), csrModel.getPrivateKey()));
+        return new CertificationModel(convertFromX509CertificateListToPEMList(certificates.get(0)),
+                convertFromX509CertificateListToPEMList(certificates.get(1)));
+    }
+
+    private String convertFromX509CertificateToPEM(X509Certificate certificate) {
+        StringWriter sw = new StringWriter();
+        try (PemWriter pw = new PemWriter(sw)) {
+            PemObjectGenerator gen = new JcaMiscPEMGenerator(certificate);
+            pw.writeObject(gen);
+        } catch (IOException e) {
+            LOGGER.error("Exception occurred during convert of X509 certificate", e);
+        }
+        return sw.toString();
+    }
+
+    private X509Certificate convertCSRToX509Certificate(PKCS10CertificationRequest csr, PrivateKey privateKey)
+            throws Cmpv2ClientAdapterException {
+        try {
+            X509v3CertificateBuilder certificateGenerator = x509CertificateBuilder.build(csr);
+            ContentSigner signer = rsaContentSignerBuilder.build(csr, privateKey);
+            X509CertificateHolder holder = certificateGenerator.build(signer);
+            return certificateFactoryProvider
+                           .generateCertificate(new ByteArrayInputStream(holder.toASN1Structure().getEncoded()));
+        } catch (IOException | CertificateException | OperatorCreationException | NoSuchProviderException e) {
+            throw new Cmpv2ClientAdapterException(e);
+        }
+    }
+
+    private List<String> convertFromX509CertificateListToPEMList(List<X509Certificate> certificates) {
+        return certificates.stream().map(this::convertFromX509CertificateToPEM).filter(cert -> !cert.isEmpty())
+                       .collect(Collectors.toList());
+    }
+
+}