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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;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.Optional;
import java.util.stream.Stream;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;
public class FileArchive {
private static final String ZIP_POSTFIX = "zip";
private static final String CSAR_POSTFIX = ".csar";
private static final String CERT_POSTFIX = ".cert";
private static final String CMS_POSTFIX = ".cms";
private final String tempDir;
FileArchive(String tempDir){
this.tempDir = tempDir;
}
Workspace unpack(String pathToFile) throws IOException {
File fileArchive = new File(pathToFile);
if (!fileArchive.exists()) {
throw new IllegalArgumentException(String.format("%s does not exist", fileArchive.getName()));
}
String path = String.format("%s%s%d", tempDir, File.separator, System.currentTimeMillis());
Optional<Path> workspaceFolderPath = createWorkspaceFolder(path);
if(workspaceFolderPath.isPresent()) {
final Path destination = workspaceFolderPath.get();
unzip(fileArchive, destination);
if (pathToFile.endsWith(ZIP_POSTFIX)) {
return createZipWorkspace(path, destination);
}else {
return Workspace.forCsar(destination);
}
}
return Workspace.empty();
}
private Workspace createZipWorkspace(String path, Path workspaceFolderPath) throws IOException {
Optional<Path> pathToCsarFile = findFile(workspaceFolderPath, CSAR_POSTFIX);
Optional<Path> pathToCertFile = findFile(workspaceFolderPath, CERT_POSTFIX);
Optional<Path> pathToCmsFile = findFile(workspaceFolderPath, CMS_POSTFIX);
Path workspaceCsarPath = new File(String.format("%s%scsar", path, File.separator)).toPath();
if (pathToCsarFile.isPresent()) {
final Path csarFilePath = pathToCsarFile.get();
unzip(csarFilePath.toFile(), workspaceCsarPath);
return Workspace.forZip(
workspaceFolderPath,
workspaceCsarPath,
pathToCertFile.orElse(null),
pathToCmsFile.orElse(null),
csarFilePath
);
}
return Workspace.forZip(workspaceFolderPath);
}
private Optional<Path> findFile(Path workspaceFolderPath, String filePostfix) throws IOException {
try(Stream<Path> files = Files.find(
workspaceFolderPath,
1,
(p, b)->p.getFileName().toString().endsWith(filePostfix))){
return files.findFirst();
}
}
private Optional<Path> createWorkspaceFolder(String path) {
Path destination = Paths.get(path);
if(destination.toFile().mkdirs()){
return Optional.of(destination);
}
return Optional.empty();
}
private void unzip(File file, Path destination) throws IOException {
try (ZipInputStream zipInputStream = new ZipInputStream(new BufferedInputStream(new FileInputStream(file)))){
ZipEntry entry;
while ((entry = zipInputStream.getNextEntry()) != null) {
String pathname = destination + File.separator + entry.getName();
if (!pathname.startsWith(String.valueOf(destination))) {
throw new IOException("Entry is outside of the target directory");
}
File filePath = new File(pathname);
if(entry.isDirectory()){
filePath.mkdirs();// NOSONAR
} else {
//create directories for sub directories in zip
File parentPathFile = filePath.getParentFile();
if (parentPathFile != null) {
parentPathFile.mkdirs();// NOSONAR
}
extract(zipInputStream, filePath);
}
}
}
}
private void extract(ZipInputStream csar, File filePath) throws IOException {
byte[] buffer = new byte[2048];
try (FileOutputStream fos = new FileOutputStream(filePath);// NOSONAR
BufferedOutputStream bos = new BufferedOutputStream(fos, buffer.length)) {
int len;
while ((len = csar.read(buffer)) > 0) {
bos.write(buffer, 0, len);
}
}
}
public static class Workspace{
private boolean isZip;
private Path rootFolder;
private Path pathToCsarFolder;
private Path certFile;
private Path cmsFile;
private Path csarFile;
private Workspace(boolean isZip, Path rootFolder,
Path pathToCsarFolder,
Path certFile, Path cmsFile,
Path csarFile) {
this.isZip = isZip;
this.rootFolder = rootFolder;
this.pathToCsarFolder = pathToCsarFolder;
this.certFile = certFile;
this.cmsFile = cmsFile;
this.csarFile = csarFile;
}
private Workspace() {
}
private Workspace(boolean isZip, Path rootFolder){
this.isZip = isZip;
this.rootFolder = rootFolder;
this.pathToCsarFolder = rootFolder;
}
static Workspace empty(){
return new Workspace();
}
static Workspace forCsar(Path workspaceFolder) {
return new Workspace(false, workspaceFolder);
}
static Workspace forZip(Path rootFolder) {
return new Workspace(true, rootFolder);
}
static Workspace forZip(Path rootFolder, Path pathToCsarWorkspace,
Path certFile, Path cmsFile, Path csarFile) {
return new Workspace(true, rootFolder, pathToCsarWorkspace, certFile, cmsFile, csarFile);
}
public boolean isZip() {
return isZip;
}
public Optional<Path> getPathToCsarFolder() {
return Optional.ofNullable(pathToCsarFolder);
}
public Optional<Path> getPathToCertFile() {
return Optional.ofNullable(certFile);
}
public Optional<Path> getRootFolder() {
return Optional.ofNullable(rootFolder);
}
public Optional<Path> getPathToCmsFile() {
return Optional.ofNullable(cmsFile);
}
public Optional<Path> getPathToCsarFile() {
return Optional.ofNullable(csarFile);
}
}
}
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