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/*
* Copyright 2019 Nokia
* <p>
* 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
* <p>
* http://www.apache.org/licenses/LICENSE-2.0
* <p>
* 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.cvc.csar.cc.sol004;
import org.onap.cli.fw.error.OnapCommandException;
import org.onap.cli.fw.schema.OnapCommandSchema;
import org.onap.cvc.csar.CSARArchive;
import org.onap.cvc.csar.FileArchive;
import org.onap.cvc.csar.cc.VTPValidateCSARBase;
import org.onap.cvc.csar.parser.SourcesParser;
import org.onap.cvc.csar.security.ShaHashCodeGenerator;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.File;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.security.NoSuchAlgorithmException;
import java.util.List;
import java.util.Optional;
@OnapCommandSchema(schema = "vtp-validate-csar-r787966.yaml")
public class VTPValidateCSARR787966 extends VTPValidateCSARBase {
private static final Logger LOG = LoggerFactory.getLogger(VTPValidateCSARR787966.class);
private static final String SHA_256 = "SHA-256";
private static final String SHA_512 = "SHA-512";
private final ShaHashCodeGenerator shaHashCodeGenerator = new ShaHashCodeGenerator();
public static class CSARErrorUnableToFindCertificate extends CSARArchive.CSARError {
CSARErrorUnableToFindCertificate() {
super("0x4001");
this.message = "Unable to find cert file defined by Entry-Certificate!";
}
}
public static class CSARErrorUnableToFindCmsSection extends CSARArchive.CSARError {
CSARErrorUnableToFindCmsSection() {
super("0x4002");
this.message = "Unable to find CMS section in manifest!";
}
}
public static class CSARErrorUnableToFindCsarContent extends CSARArchive.CSARError {
CSARErrorUnableToFindCsarContent() {
super("0x4003");
this.message = "Unable to find csar content!";
}
}
public static class CSARErrorWrongHashCode extends CSARArchive.CSARError {
CSARErrorWrongHashCode(String path) {
super("0x4004");
this.message = String.format("Source '%s' has wrong hash!", path);
}
}
public static class CSARErrorUnableToFindAlgorithm extends CSARArchive.CSARError {
CSARErrorUnableToFindAlgorithm(String path) {
super("0x4005");
this.message = String.format("Source '%s' has hash, but unable to find algorithm tag!", path);
}
}
public static class CSARErrorUnableToFindSource extends CSARArchive.CSARError {
CSARErrorUnableToFindSource(String path) {
super("0x4006");
this.message = String.format("Source '%s' does not exist!", path);
}
}
@Override
protected void validateCSAR(CSARArchive csar) throws OnapCommandException {
try {
FileArchive.Workspace workspace = csar.getWorkspace();
final Optional<Path> pathToCsarFolder = workspace.getPathToCsarFolder();
if(pathToCsarFolder.isPresent()) {
validate(csar, pathToCsarFolder.get());
} else {
this.errors.add(new CSARErrorUnableToFindCsarContent());
}
} catch (Exception e) {
LOG.error("Internal VTPValidateCSARR787966 command error", e);
throw new OnapCommandException("0x3000", "Internal VTPValidateCSARR787966 command error. See logs.");
}
}
private void validate(CSARArchive csar, Path csarRootDirectory ) throws IOException, NoSuchAlgorithmException {
final CSARArchive.Manifest manifest = csar.getManifest();
final CSARArchive.TOSCAMeta toscaMeta = csar.getToscaMeta();
validateSecurityStructure(toscaMeta, csarRootDirectory, manifest);
validateSources(csarRootDirectory, manifest);
}
private void validateSecurityStructure(CSARArchive.TOSCAMeta toscaMeta , Path csarRootDirectory, CSARArchive.Manifest manifest) {
final Optional<File> entryCertificate = resolveCertificateFilePath(toscaMeta, csarRootDirectory);
if (!entryCertificate.isPresent() || !entryCertificate.get().exists() && !manifest.getCms().isEmpty()) {
this.errors.add(new CSARErrorUnableToFindCertificate());
} else if (entryCertificate.get().exists() && manifest.getCms().isEmpty()) {
this.errors.add(new CSARErrorUnableToFindCmsSection());
}
}
private Optional<File> resolveCertificateFilePath(CSARArchive.TOSCAMeta toscaMeta, Path csarRootDirectory) {
final String certificatePath = toscaMeta.getEntryCertificate();
if(certificatePath == null){
return Optional.empty();
} else {
return Optional.of(csarRootDirectory.resolve(certificatePath).toFile());
}
}
private void validateSources(Path csarRootDirectory, CSARArchive.Manifest manifest) throws NoSuchAlgorithmException, IOException {
final List<SourcesParser.Source> sources = manifest.getSources();
for (SourcesParser.Source source: sources){
final Path sourcePath = csarRootDirectory.resolve(source.getValue());
if(!Files.exists(sourcePath)){
this.errors.add(new CSARErrorUnableToFindSource(source.getValue()));
} else {
if (!source.getAlgorithm().isEmpty()) {
validateSourceHashCode(csarRootDirectory, source);
} else if (source.getAlgorithm().isEmpty() && !source.getHash().isEmpty()) {
this.errors.add(new CSARErrorUnableToFindAlgorithm(source.getValue()));
}
}
}
}
private void validateSourceHashCode(Path csarRootDirectory, SourcesParser.Source source) throws NoSuchAlgorithmException, IOException {
String hashCode = generateHashCode(csarRootDirectory, source);
if (!hashCode.equals(source.getHash())) {
this.errors.add(new CSARErrorWrongHashCode(source.getValue()));
}
}
private String generateHashCode(Path csarRootDirectory, SourcesParser.Source source) throws NoSuchAlgorithmException, IOException {
final byte[] sourceData = Files.readAllBytes(csarRootDirectory.resolve(source.getValue()));
final String algorithm = source.getAlgorithm();
if(algorithm.equalsIgnoreCase(SHA_256)) {
return this.shaHashCodeGenerator.generateSha256(sourceData);
} else if(algorithm.equalsIgnoreCase(SHA_512)){
return this.shaHashCodeGenerator.generateSha512(sourceData);
}
throw new UnsupportedOperationException(String.format("Algorithm '%s' is not supported!", algorithm));
}
@Override
protected String getVnfReqsNo() {
return "R787966";
}
}
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