[OOM-CERT-SERVICE] Add Certification Request functionality

Issue-ID: OOM-2753
Signed-off-by: Joanna Jeremicz <joanna.jeremicz@nokia.com>
Change-Id: Id8702dd45254f0e82d9b71e5e69372569e523838

8 files changed, 124 insertions, 22 deletions

diff --git a/certService/src/main/java/org/onap/oom/certservice/certification/CertificationModelFactory.java b/certService/src/main/java/org/onap/oom/certservice/certification/CertificationModelFactory.java
index a5076a38..dddeb2d3 100644
--- a/certService/src/main/java/org/onap/oom/certservice/certification/CertificationModelFactory.java
+++ b/certService/src/main/java/org/onap/oom/certservice/certification/CertificationModelFactory.java
@@ -99,7 +99,7 @@ public class CertificationModelFactory {
         } else {
             LOGGER.info(
                 "Certificate Signing Request and Old Certificate have different parameters. Preparing Certification Request");
-            throw new UnsupportedOperationException("TODO: implement CR in separate MR");
+            return certificationProvider.certificationRequest(csrModel, cmpv2Server);
         }
     }
 }
diff --git a/certService/src/main/java/org/onap/oom/certservice/certification/CertificationProvider.java b/certService/src/main/java/org/onap/oom/certservice/certification/CertificationProvider.java
index bfa83103..17e23e39 100644
--- a/certService/src/main/java/org/onap/oom/certservice/certification/CertificationProvider.java
+++ b/certService/src/main/java/org/onap/oom/certservice/certification/CertificationProvider.java
@@ -67,6 +67,12 @@ public class CertificationProvider {
             convertFromX509CertificateListToPemList(certificates.getTrustedCertificates()));
     }
 
+    public CertificationModel certificationRequest(CsrModel csrModel, Cmpv2Server cmpv2Server) throws CmpClientException {
+        Cmpv2CertificationModel certificates = cmpClient.certificationRequest(csrModel, cmpv2Server);
+        return new CertificationModel(convertFromX509CertificateListToPemList(certificates.getCertificateChain()),
+            convertFromX509CertificateListToPemList(certificates.getTrustedCertificates()));
+    }
+
     private static List<String> convertFromX509CertificateListToPemList(List<X509Certificate> certificates) {
         return certificates.stream().map(CertificationProvider::convertFromX509CertificateToPem).filter(cert -> !cert.isEmpty())
                 .collect(Collectors.toList());
diff --git a/certService/src/main/java/org/onap/oom/certservice/cmpv2client/api/CmpClient.java b/certService/src/main/java/org/onap/oom/certservice/cmpv2client/api/CmpClient.java
index 5ded3056..88c73c04 100644
--- a/certService/src/main/java/org/onap/oom/certservice/cmpv2client/api/CmpClient.java
+++ b/certService/src/main/java/org/onap/oom/certservice/cmpv2client/api/CmpClient.java
@@ -88,4 +88,17 @@ public interface CmpClient {
    */
   Cmpv2CertificationModel updateCertificate(CsrModel csrModel, Cmpv2Server cmpv2Server,
       CertificateUpdateModel certificateUpdateModel) throws CmpClientException;
+
+  /**
+   * Requests for an additional External Root CA Certificate to be created for the passed keyPair wrapped
+   * in a CSRMeta with common details. Basic Authentication using IAK/RV, Verification of the signature
+   * (proof-of-possession) on the request is performed and an Exception thrown if verification fails
+   * or issue encountered in fetching certificate from CA.
+   *
+   * @param csrModel  Certificate Signing Request Model. Must not be {@code null}.
+   * @param cmpv2Server    CMPv2 server. Must not be {@code null}.
+   * @return model for certification containing certificate chain and trusted certificates
+   * @throws CmpClientException if client error occurs.
+   */
+  Cmpv2CertificationModel certificationRequest(CsrModel csrModel, Cmpv2Server cmpv2Server) throws CmpClientException;
 }
diff --git a/certService/src/main/java/org/onap/oom/certservice/cmpv2client/impl/CmpClientImpl.java b/certService/src/main/java/org/onap/oom/certservice/cmpv2client/impl/CmpClientImpl.java
index 270b5995..549cf6b9 100644
--- a/certService/src/main/java/org/onap/oom/certservice/cmpv2client/impl/CmpClientImpl.java
+++ b/certService/src/main/java/org/onap/oom/certservice/cmpv2client/impl/CmpClientImpl.java
@@ -93,18 +93,7 @@ public class CmpClientImpl implements CmpClient {
             throws CmpClientException {
 
         validate(csrModel, server, httpClient, notBefore, notAfter);
-
-        final String iak = server.getAuthentication().getIak();
-        final PkiMessageProtection pkiMessageProtection = new PasswordBasedProtection(iak);
-        final CreateCertRequest certRequest =
-                getCmpMessageBuilderWithCommonRequestValues(csrModel, server)
-                        .with(CreateCertRequest::setNotBefore, notBefore)
-                        .with(CreateCertRequest::setNotAfter, notAfter)
-                        .with(CreateCertRequest::setSenderKid, server.getAuthentication().getRv())
-                        .with(CreateCertRequest::setCmpRequestType, PKIBody.TYPE_INIT_REQ)
-                        .with(CreateCertRequest::setProtection, pkiMessageProtection)
-                        .build();
-
+        final CreateCertRequest certRequest = getIakRvRequest(csrModel, server, notBefore, notAfter, PKIBody.TYPE_INIT_REQ);
         return executeCmpRequest(csrModel, server, certRequest);
     }
 
@@ -131,6 +120,32 @@ public class CmpClientImpl implements CmpClient {
 
     }
 
+    @Override
+    public Cmpv2CertificationModel certificationRequest(CsrModel csrModel, Cmpv2Server cmpv2Server) throws CmpClientException {
+
+        validate(csrModel, cmpv2Server, httpClient, null, null);
+        final CreateCertRequest certRequest = getIakRvRequest(csrModel, cmpv2Server, null, null, PKIBody.TYPE_CERT_REQ);
+        return executeCmpRequest(csrModel, cmpv2Server, certRequest);
+    }
+
+    private CreateCertRequest getIakRvRequest(
+        CsrModel csrModel,
+        Cmpv2Server server,
+        Date notBefore,
+        Date notAfter,
+        int requestType) {
+
+        final String iak = server.getAuthentication().getIak();
+        final PkiMessageProtection pkiMessageProtection = new PasswordBasedProtection(iak);
+        return getCmpMessageBuilderWithCommonRequestValues(csrModel, server)
+            .with(CreateCertRequest::setNotBefore, notBefore)
+            .with(CreateCertRequest::setNotAfter, notAfter)
+            .with(CreateCertRequest::setSenderKid, server.getAuthentication().getRv())
+            .with(CreateCertRequest::setCmpRequestType, requestType)
+            .with(CreateCertRequest::setProtection, pkiMessageProtection)
+            .build();
+    }
+
     private Cmpv2CertificationModel executeCmpRequest(CsrModel csrModel, Cmpv2Server cmpv2Server,
         CreateCertRequest certRequest) throws CmpClientException {
         final PKIMessage pkiMessage = certRequest.generateCertReq();
diff --git a/certService/src/test/java/org/onap/oom/certservice/certification/CertificationModelFactoryTest.java b/certService/src/test/java/org/onap/oom/certservice/certification/CertificationModelFactoryTest.java
index 1233168c..c7454f46 100644
--- a/certService/src/test/java/org/onap/oom/certservice/certification/CertificationModelFactoryTest.java
+++ b/certService/src/test/java/org/onap/oom/certservice/certification/CertificationModelFactoryTest.java
@@ -242,17 +242,25 @@ class CertificationModelFactoryTest {
     }
 
     @Test
-    void shouldPerformCrWhenCsrAndOldCertDataMatch() throws CertificateDecryptionException, DecryptionException {
-        //given
-        mockCsrFactoryModelCreation();
+    void shouldPerformCrWhenCsrAndOldCertDataDontMatch()
+        throws CertificateDecryptionException, DecryptionException, CmpClientException {
+        // Given
+        CsrModel csrModel = mockCsrFactoryModelCreation();
+        Cmpv2Server testServer = mockCmpv2ProviderServerSelection();
+        mockCertificateProviderCertificationRequest(csrModel, testServer);
         mockCertificateFactoryModelCreation();
+        // When
         when(updateRequestTypeDetector.isKur(any(), any())).thenReturn(false);
-        //when, then
-        Exception exception = assertThrows(
-            UnsupportedOperationException.class, () ->
-                certificationModelFactory.createCertificationModel(TEST_CERTIFICATE_UPDATE_MODEL)
-        );
-        assertEquals(exception.getMessage(), "TODO: implement CR in separate MR");
+        CertificationModel certificationModel = certificationModelFactory
+            .createCertificationModel(TEST_CERTIFICATE_UPDATE_MODEL);
+        // Then
+        assertEquals(2, certificationModel.getCertificateChain().size());
+        assertThat(certificationModel.getCertificateChain()).contains(INTERMEDIATE_CERT, ENTITY_CERT);
+        assertEquals(2, certificationModel.getTrustedCertificates().size());
+        assertThat(certificationModel.getTrustedCertificates()).contains(CA_CERT, EXTRA_CA_CERT);
+
+        verify(certificationProvider, times(1))
+            .certificationRequest(csrModel, testServer);
     }
 
     @Test
@@ -276,6 +284,14 @@ class CertificationModelFactoryTest {
         ).thenReturn(expectedCertificationModel);
     }
 
+    private void mockCertificateProviderCertificationRequest(CsrModel csrModel, Cmpv2Server testServer)
+        throws CmpClientException {
+        CertificationModel expectedCertificationModel = getCertificationModel();
+        when(
+            certificationProvider.certificationRequest(csrModel, testServer)
+        ).thenReturn(expectedCertificationModel);
+    }
+
     private void mockCertificateProviderCertificateSigning(CsrModel csrModel, Cmpv2Server testServer)
         throws CmpClientException {
         CertificationModel expectedCertificationModel = getCertificationModel();
diff --git a/certService/src/test/java/org/onap/oom/certservice/certification/CertificationProviderTest.java b/certService/src/test/java/org/onap/oom/certservice/certification/CertificationProviderTest.java
index 4e7908f5..7d75a655 100644
--- a/certService/src/test/java/org/onap/oom/certservice/certification/CertificationProviderTest.java
+++ b/certService/src/test/java/org/onap/oom/certservice/certification/CertificationProviderTest.java
@@ -160,6 +160,28 @@ class CertificationProviderTest {
     }
 
     @Test
+    void shouldCorrectConvertToCertificationModelForCertificationRequest()
+        throws IOException, CertificateException, CmpClientException {
+
+        when(
+            cmpClient.certificationRequest(any(CsrModel.class), any(Cmpv2Server.class))
+        ).thenReturn(getCMPv2CertificationModel());
+
+        CertificationModel certificationModel = certificationProvider
+            .certificationRequest(csrModel, server);
+        List<String> certificateChain = certificationModel.getCertificateChain();
+        List<String> trustedCertificates = certificationModel.getTrustedCertificates();
+
+        assertThat(certificateChain.size()).isEqualTo(EXPECTED_SIZE_ONE);
+        assertThat(certificateChain.get(0)).startsWith(EXPECTED_BEGIN_OF_CERTIFICATE);
+        assertThat(certificateChain.get(0)).endsWith(EXPECTED_END_OF_CERTIFICATE);
+
+        assertThat(trustedCertificates.size()).isEqualTo(EXPECTED_SIZE_ONE);
+        assertThat(trustedCertificates.get(0)).startsWith(EXPECTED_BEGIN_OF_CERTIFICATE);
+        assertThat(trustedCertificates.get(0)).endsWith(EXPECTED_END_OF_CERTIFICATE);
+    }
+
+    @Test
     void certificationProviderThrowCmpClientWhenCallingClientFailsForUpdateCertificate()
         throws CmpClientException {
         // Given
diff --git a/certService/src/test/java/org/onap/oom/certservice/cmpv2client/ClientTestData.java b/certService/src/test/java/org/onap/oom/certservice/cmpv2client/ClientTestData.java
index 5a9a6838..0d8b80bd 100644
--- a/certService/src/test/java/org/onap/oom/certservice/cmpv2client/ClientTestData.java
+++ b/certService/src/test/java/org/onap/oom/certservice/cmpv2client/ClientTestData.java
@@ -26,6 +26,7 @@ import org.onap.oom.certservice.certification.model.CertificateUpdateModel.Certi
 public final class ClientTestData {
 
     static final String KUR_CORRECT_SERVER_RESPONSE_ENCODED = "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";
+    static final String CR_CORRECT_SERVER_RESPONSE_ENCODED = "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";
 
     private static final String TEST_CA = "TestCA";
     private static final String WRONG_OLD_CERT = "wrong old cert";
diff --git a/certService/src/test/java/org/onap/oom/certservice/cmpv2client/Cmpv2ClientTest.java b/certService/src/test/java/org/onap/oom/certservice/cmpv2client/Cmpv2ClientTest.java
index 7ae42b35..de0a100c 100644
--- a/certService/src/test/java/org/onap/oom/certservice/cmpv2client/Cmpv2ClientTest.java
+++ b/certService/src/test/java/org/onap/oom/certservice/cmpv2client/Cmpv2ClientTest.java
@@ -170,6 +170,35 @@ class Cmpv2ClientTest {
     }
 
     @Test
+    void shouldReturnCorrectCmpCertificateForCorrectCertificationRequest() throws CmpClientException, IOException {
+
+        // given
+        setCsrModelAndServerTestDefaultValues();
+        when(httpClient.execute(any())).thenReturn(httpResponse);
+        when(httpResponse.getEntity()).thenReturn(httpEntity);
+
+        doAnswer(
+            invocation -> {
+                OutputStream os = invocation.getArgument(0);
+                os.write(BASE64_DECODER.decode(ClientTestData.CR_CORRECT_SERVER_RESPONSE_ENCODED.getBytes()));
+                return null;
+            })
+            .when(httpEntity)
+            .writeTo(any(OutputStream.class));
+        CmpClientImpl cmpClient = new CmpClientImpl(httpClient);
+
+        // when
+        Cmpv2CertificationModel cmpClientResult =
+            cmpClient.certificationRequest(csrModel, server);
+
+        // then
+        assertNotNull(cmpClientResult);
+        assertThat(cmpClientResult.getCertificateChain()).isNotEmpty();
+        assertThat(cmpClientResult.getCertificateChain()).isNotEmpty();
+
+    }
+
+    @Test
     void shouldThrowCmpClientExceptionWhenCannotParseOldPrivateKey() {
         setCsrModelAndServerTestDefaultValues();