[OOM-CERT-SERVICE] Add handling cmp response when PBM value is missing.

Issue-ID: OOM-2753
Signed-off-by: Tomasz Wrobel <tomasz.wrobel@nokia.com>
Change-Id: I38de28c994b5c83f936b3b5ea47d024a96f4733e

2 files changed, 106 insertions, 22 deletions

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 a673869d..7f17260c 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
@@ -39,6 +39,7 @@ import java.util.Date;
 import java.util.Objects;
 import java.util.Optional;
 import org.apache.http.impl.client.CloseableHttpClient;
+import org.bouncycastle.asn1.ASN1ObjectIdentifier;
 import org.bouncycastle.asn1.cmp.CMPCertificate;
 import org.bouncycastle.asn1.cmp.CertRepMessage;
 import org.bouncycastle.asn1.cmp.CertResponse;
@@ -67,6 +68,7 @@ public class CmpClientImpl implements CmpClient {
 
     private static final String DEFAULT_CA_NAME = "Certification Authority";
     private static final String DEFAULT_PROFILE = CaMode.RA.getProfile();
+    private static final ASN1ObjectIdentifier PASSWORD_BASED_MAC = new ASN1ObjectIdentifier("1.2.840.113533.7.66.13");
 
     public CmpClientImpl(CloseableHttpClient httpClient) {
         this.httpClient = httpClient;
@@ -112,7 +114,18 @@ public class CmpClientImpl implements CmpClient {
         final PKIHeader header = respPkiMessage.getHeader();
         final AlgorithmIdentifier protectionAlgo = header.getProtectionAlg();
         verifySignatureWithPublicKey(respPkiMessage, publicKey);
-        verifyProtectionWithProtectionAlgo(respPkiMessage, initAuthPassword, header, protectionAlgo);
+        if (isPasswordBasedMacAlgorithm(protectionAlgo)) {
+            LOG.info("CMP response is protected by Password Base Mac Algorithm. Attempt to verify protection");
+            verifyPasswordBasedMacProtection(respPkiMessage, initAuthPassword, header, protectionAlgo);
+        }
+    }
+
+    private boolean isPasswordBasedMacAlgorithm(AlgorithmIdentifier protectionAlgo) throws CmpClientException {
+        if (Objects.isNull(protectionAlgo)) {
+            LOG.error("CMP response does not contain Protection Algorithm field");
+            throw new CmpClientException("CMP response does not contain Protection Algorithm field");
+        }
+        return PASSWORD_BASED_MAC.equals(protectionAlgo.getAlgorithm());
     }
 
     private void verifySignatureWithPublicKey(PKIMessage respPkiMessage, PublicKey publicKey)
@@ -127,22 +140,12 @@ public class CmpClientImpl implements CmpClient {
         }
     }
 
-    private void verifyProtectionWithProtectionAlgo(
-            PKIMessage respPkiMessage,
-            String initAuthPassword,
-            PKIHeader header,
-            AlgorithmIdentifier protectionAlgo)
-            throws CmpClientException {
-        if (Objects.nonNull(protectionAlgo)) {
-            LOG.debug("Verifying PasswordBased Protection of the Response.");
-            verifyPasswordBasedProtection(respPkiMessage, initAuthPassword, protectionAlgo);
-            checkImplicitConfirm(header);
-        } else {
-            LOG.error(
-                    "Protection Algorithm is not available when expecting PBE protected response containing protection algorithm");
-            throw new CmpClientException(
-                    "Protection Algorithm is not available when expecting PBE protected response containing protection algorithm");
-        }
+    private void verifyPasswordBasedMacProtection(PKIMessage respPkiMessage, String initAuthPassword,
+        PKIHeader header, AlgorithmIdentifier protectionAlgo)
+        throws CmpClientException {
+        LOG.debug("Verifying PasswordBased Protection of the Response.");
+        verifyPasswordBasedProtection(respPkiMessage, initAuthPassword, protectionAlgo);
+        checkImplicitConfirm(header);
     }
 
     private Cmpv2CertificationModel checkCmpCertRepMessage(final PKIMessage respPkiMessage)
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 df9699ae..337ed8c1 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
@@ -1,5 +1,6 @@
 /*
  * Copyright (C) 2019 Ericsson Software Technology AB. All rights reserved.
+ * Copyright (C) 2021 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.
@@ -16,6 +17,7 @@
 
 package org.onap.oom.certservice.cmpv2client;
 
+import static org.assertj.core.api.Assertions.assertThatExceptionOfType;
 import static org.junit.jupiter.api.Assertions.assertNotNull;
 import static org.mockito.ArgumentMatchers.any;
 import static org.mockito.Mockito.doAnswer;
@@ -24,6 +26,7 @@ import static org.mockito.Mockito.when;
 import static org.mockito.MockitoAnnotations.initMocks;
 
 import java.io.BufferedInputStream;
+import java.io.ByteArrayInputStream;
 import java.io.ByteArrayOutputStream;
 import java.io.IOException;
 import java.io.InputStream;
@@ -35,20 +38,30 @@ import java.security.NoSuchProviderException;
 import java.security.PrivateKey;
 import java.security.PublicKey;
 import java.security.Security;
-import java.security.cert.X509Certificate;
+
 import java.security.spec.InvalidKeySpecException;
 import java.security.spec.PKCS8EncodedKeySpec;
 import java.security.spec.X509EncodedKeySpec;
 import java.text.ParseException;
 import java.text.SimpleDateFormat;
-import java.util.Collections;
 import java.util.Date;
-import java.util.List;
 
 import org.apache.commons.io.IOUtils;
 import org.apache.http.HttpEntity;
 import org.apache.http.client.methods.CloseableHttpResponse;
 import org.apache.http.impl.client.CloseableHttpClient;
+import org.bouncycastle.asn1.ASN1GeneralizedTime;
+import org.bouncycastle.asn1.ASN1Integer;
+import org.bouncycastle.asn1.DERBitString;
+import org.bouncycastle.asn1.cmp.PKIBody;
+import org.bouncycastle.asn1.cmp.PKIHeader;
+import org.bouncycastle.asn1.cmp.PKIHeaderBuilder;
+import org.bouncycastle.asn1.cmp.PKIMessage;
+import org.bouncycastle.asn1.crmf.CertReqMessages;
+import org.bouncycastle.asn1.crmf.CertReqMsg;
+import org.bouncycastle.asn1.crmf.CertRequest;
+import org.bouncycastle.asn1.crmf.CertTemplateBuilder;
+import org.bouncycastle.asn1.crmf.ProofOfPossession;
 import org.bouncycastle.asn1.x500.X500Name;
 import org.bouncycastle.asn1.x500.X500NameBuilder;
 import org.bouncycastle.asn1.x500.style.BCStyle;
@@ -78,8 +91,6 @@ class Cmpv2ClientTest {
     private Date notAfter;
     private X500Name dn;
 
-    @Mock
-    X509Certificate cert;
 
     @Mock
     CloseableHttpClient httpClient;
@@ -235,6 +246,47 @@ class Cmpv2ClientTest {
                 () -> cmpClient.createCertificate(csrModel, server, notBefore, notAfter));
     }
 
+
+    @Test
+    void shouldThrowExceptionWhenResponseNotContainProtectionAlgorithmField()
+        throws IOException, ParseException {
+
+        Date beforeDate = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss").parse("2019/11/11 12:00:00");
+        Date afterDate = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss").parse("2020/11/11 12:00:00");
+        setCsrModelAndServerValues(
+            "password",
+            "senderKID",
+            "http://127.0.0.1/ejbca/publicweb/cmp/cmp",
+            beforeDate,
+            afterDate);
+
+        when(httpClient.execute(any())).thenReturn(httpResponse);
+        when(httpResponse.getEntity()).thenReturn(httpEntity);
+
+        try (
+            BufferedInputStream bis = new BufferedInputStream(new ByteArrayInputStream(
+                preparePKIMessageWithoutProtectionAlgorithm().getEncoded()
+            ))) {
+
+            byte[] ba = IOUtils.toByteArray(bis);
+            doAnswer(
+                invocation -> {
+                    OutputStream os = invocation.getArgument(0);
+                    os.write(ba);
+                    return null;
+                })
+                .when(httpEntity)
+                .writeTo(any(OutputStream.class));
+        }
+
+        CmpClientImpl cmpClient = new CmpClientImpl(httpClient);
+
+        assertThatExceptionOfType(CmpClientException.class)
+            .isThrownBy(() -> cmpClient.createCertificate(csrModel, server, notBefore, notAfter))
+            .withMessageContaining("CMP response does not contain Protection Algorithm field");
+
+    }
+
     @Test
     void shouldThrowIllegalArgumentExceptionWhencreateCertificateCalledWithInvalidCsr()
             throws ParseException {
@@ -287,4 +339,33 @@ class Cmpv2ClientTest {
         this.notBefore = notBefore;
         this.notAfter = notAfter;
     }
+
+    private PKIMessage preparePKIMessageWithoutProtectionAlgorithm() {
+
+        CertTemplateBuilder certTemplateBuilder = new CertTemplateBuilder();
+        X500Name issuerDN = getTestIssuerDN();
+
+        certTemplateBuilder.setIssuer(issuerDN);
+        certTemplateBuilder.setSerialNumber(new ASN1Integer(0L));
+
+        CertRequest certRequest = new CertRequest(4, certTemplateBuilder.build(), null);
+        CertReqMsg certReqMsg = new CertReqMsg(certRequest, new ProofOfPossession(), null);
+        CertReqMessages certReqMessages = new CertReqMessages(certReqMsg);
+
+        PKIHeaderBuilder pkiHeaderBuilder = new PKIHeaderBuilder(PKIHeader.CMP_2000, new GeneralName(issuerDN), new GeneralName(issuerDN));
+        pkiHeaderBuilder.setMessageTime(new ASN1GeneralizedTime(new Date()));
+        pkiHeaderBuilder.setProtectionAlg(null);
+
+        PKIBody pkiBody = new PKIBody(PKIBody.TYPE_INIT_REQ, certReqMessages);
+        return new PKIMessage(pkiHeaderBuilder.build(), pkiBody, new DERBitString("test".getBytes()));
+    }
+
+    private X500Name getTestIssuerDN() {
+        return new X500NameBuilder()
+            .addRDN(BCStyle.O, "Test_Organization")
+            .addRDN(BCStyle.UID, "Test_UID")
+            .addRDN(BCStyle.CN, "Test_CA")
+            .build();
+    }
+
 }