1 files changed, 126 insertions, 0 deletions
diff --git a/certService/src/main/java/org/onap/aaf/certservice/cmpv2client/impl/CmpClientImpl.java b/certService/src/main/java/org/onap/aaf/certservice/cmpv2client/impl/CmpClientImpl.java
new file mode 100644
index 00000000..fb43e3e8
--- /dev/null
+++ b/certService/src/main/java/org/onap/aaf/certservice/cmpv2client/impl/CmpClientImpl.java
@@ -0,0 +1,126 @@
+/*
+ * Copyright (C) 2020 Ericsson Software Technology AB. 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
+ */
+
+package org.onap.aaf.certservice.cmpv2client.impl;
+
+import java.security.cert.X509Certificate;
+import java.util.Date;
+import org.apache.http.impl.client.CloseableHttpClient;
+import org.bouncycastle.asn1.cmp.PKIMessage;
+import org.onap.aaf.certservice.cmpv2client.exceptions.CmpClientException;
+import org.onap.aaf.certservice.cmpv2client.api.CmpClient;
+import org.onap.aaf.certservice.cmpv2client.external.CSRMeta;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * Implementation of the CmpClient Interface conforming to RFC4210 (Certificate Management Protocol
+ * (CMP)) and RFC4211 (Certificate Request Message Format (CRMF)) standards.
+ */
+public class CmpClientImpl implements CmpClient {
+
+  private final Logger LOG = LoggerFactory.getLogger(CmpClientImpl.class);
+  private final CloseableHttpClient httpClient;
+
+  private static final String DEFAULT_PROFILE = "RA";
+  private static final String DEFAULT_CA_NAME = "Certification Authority";
+
+  public CmpClientImpl(CloseableHttpClient httpClient){
+    this.httpClient = httpClient;
+  }
+
+  @Override
+  public X509Certificate createCertificate(
+      String caName,
+      String profile,
+      CSRMeta csrMeta,
+      X509Certificate cert,
+      Date notBefore,
+      Date notAfter)
+      throws CmpClientException {
+    // Validate inputs for Certificate Request
+    validate(csrMeta, cert, caName, profile, httpClient, notBefore, notAfter);
+
+    final CreateCertRequest certRequest =
+        CmpMessageBuilder.of(CreateCertRequest::new)
+            .with(CreateCertRequest::setIssuerDn, csrMeta.issuerx500Name())
+            .with(CreateCertRequest::setSubjectDn, csrMeta.x500Name())
+            .with(CreateCertRequest::setSansList, csrMeta.sans())
+            .with(CreateCertRequest::setSubjectKeyPair, csrMeta.keyPair())
+            .with(CreateCertRequest::setNotBefore, notBefore)
+            .with(CreateCertRequest::setNotAfter, notAfter)
+            .with(CreateCertRequest::setInitAuthPassword, csrMeta.password())
+            .build();
+
+    final PKIMessage pkiMessage = certRequest.generateCertReq();
+    Cmpv2HttpClient cmpv2HttpClient = new Cmpv2HttpClient(httpClient);
+    final byte[] respBytes =
+        cmpv2HttpClient.postRequest(pkiMessage, csrMeta.caUrl(), caName);
+    final PKIMessage respPkiMessage = PKIMessage.getInstance(respBytes);
+    // todo: add response validation and return Certificate
+    return null;
+  }
+
+  @Override
+  public X509Certificate createCertificate(
+      String caName,
+      String profile,
+      CSRMeta csrMeta,
+      X509Certificate csr)
+      throws CmpClientException {
+    return createCertificate(caName, profile, csrMeta, csr, null, null);
+  }
+
+  /**
+   * Validate inputs for Certificate Creation.
+   *
+   * @param csrMeta CSRMeta Object containing variables for creating a Certificate Request.
+   * @param cert Certificate object needed to validate response from CA server.
+   * @param incomingCaName Date specifying certificate is not valid before this date.
+   * @param incomingProfile Date specifying certificate is not valid after this date.
+   * @throws IllegalArgumentException if Before Date is set after the After Date.
+   */
+  private void validate(
+      final CSRMeta csrMeta,
+      final X509Certificate cert,
+      final String incomingCaName,
+      final String incomingProfile,
+      final CloseableHttpClient httpClient,
+      final Date notBefore,
+      final Date notAfter)
+      throws IllegalArgumentException {
+
+    String caName;
+    String caProfile;
+    caName = CmpUtil.isNullOrEmpty(incomingCaName) ? incomingCaName : DEFAULT_CA_NAME;
+    caProfile = CmpUtil.isNullOrEmpty(incomingProfile) ? incomingProfile : DEFAULT_PROFILE;
+    LOG.info(
+        "Validate before creating Certificate Request for CA :{} in Mode {} ", caName, caProfile);
+
+    CmpUtil.notNull(csrMeta, "CSRMeta Instance");
+    CmpUtil.notNull(csrMeta.x500Name(), "Subject DN");
+    CmpUtil.notNull(csrMeta.issuerx500Name(), "Issuer DN");
+    CmpUtil.notNull(csrMeta.password(), "IAK/RV Password");
+    CmpUtil.notNull(cert, "Certificate Signing Request (CSR)");
+    CmpUtil.notNull(csrMeta.caUrl(), "External CA URL");
+    CmpUtil.notNull(csrMeta.keypair(), "Subject KeyPair");
+    CmpUtil.notNull(httpClient, "Closeable Http Client");
+
+    if (notBefore != null && notAfter != null && notBefore.compareTo(notAfter) > 0) {
+      throw new IllegalArgumentException("Before Date is set after the After Date");
+    }
+  }
+}