Fix timestamps set on jars created by the extract command

Update `ExtractCommand` so that both the generated jar and the
contained manifest entry have timestamps copied from the original.

Fixes gh-48664

spring-boot-project/spring-boot-tools/spring-boot-jarmode-tools/src/main/java/org/springframework/boot/jarmode/tools/ExtractCommand.java

@@ -16,6 +16,7 @@
 
 package org.springframework.boot.jarmode.tools;
 
+import java.io.BufferedOutputStream;
 import java.io.File;
 import java.io.FileInputStream;
 import java.io.FileOutputStream;
@@ -26,6 +27,7 @@ import java.io.PrintStream;
 import java.io.UncheckedIOException;
 import java.nio.file.Files;
 import java.nio.file.attribute.BasicFileAttributeView;
+import java.nio.file.attribute.BasicFileAttributes;
 import java.nio.file.attribute.FileTime;
 import java.util.EnumSet;
 import java.util.Enumeration;
@@ -240,10 +242,17 @@ class ExtractCommand extends Command {
 		String librariesDirectory = getLibrariesDirectory(options);
 		Manifest manifest = jarStructure.createLauncherManifest((library) -> librariesDirectory + library);
 		mkdirs(file.getParentFile());
-		try (JarOutputStream output = new JarOutputStream(new FileOutputStream(file), manifest)) {
+		try (JarOutputStream output = new JarOutputStream(new FileOutputStream(file))) {
+			ManfiestWriter manfiestWriter = (sourceJarFile) -> {
+				JarEntry entry = createJarEntry(JarFile.MANIFEST_NAME,
+						sourceJarFile.getJarEntry(JarFile.MANIFEST_NAME));
+				output.putNextEntry(entry);
+				manifest.write(new BufferedOutputStream(output));
+				output.closeEntry();
+			};
 			EnumSet<Type> allowedTypes = EnumSet.of(Type.APPLICATION_CLASS_OR_RESOURCE, Type.META_INF);
 			Set<String> writtenEntries = new HashSet<>();
-			withJarEntries(this.context.getArchiveFile(), ((stream, jarEntry) -> {
+			withJarEntries(this.context.getArchiveFile(), manfiestWriter, ((stream, jarEntry) -> {
 				Entry entry = jarStructure.resolve(jarEntry);
 				if (entry != null && allowedTypes.contains(entry.type()) && StringUtils.hasLength(entry.location())) {
 					JarEntry newJarEntry = createJarEntry(entry.location(), jarEntry);
@@ -261,6 +270,15 @@ class ExtractCommand extends Command {
 				}
 			}));
 		}
+		copyTimestamps(this.context.getArchiveFile(), file);
+	}
+
+	private void copyTimestamps(File source, File destination) throws IOException {
+		BasicFileAttributes sourceAttributes = Files.getFileAttributeView(source.toPath(), BasicFileAttributeView.class)
+			.readAttributes();
+		Files.getFileAttributeView(destination.toPath(), BasicFileAttributeView.class)
+			.setTimes(sourceAttributes.lastModifiedTime(), sourceAttributes.lastAccessTime(),
+					sourceAttributes.creationTime());
 	}
 
 	private String getApplicationFilename(Map<Option, String> options) {
@@ -296,9 +314,11 @@ class ExtractCommand extends Command {
 
 	private static JarEntry createJarEntry(String location, JarEntry originalEntry) {
 		JarEntry entry = new JarEntry(location);
-		copyFileTime(getLastModifiedTime(originalEntry), entry::setLastModifiedTime);
-		copyFileTime(getLastAccessTime(originalEntry), entry::setLastAccessTime);
-		copyFileTime(getCreationTime(originalEntry), entry::setCreationTime);
+		if (originalEntry != null) {
+			copyFileTime(getLastModifiedTime(originalEntry), entry::setLastModifiedTime);
+			copyFileTime(getLastAccessTime(originalEntry), entry::setLastAccessTime);
+			copyFileTime(getCreationTime(originalEntry), entry::setCreationTime);
+		}
 		return entry;
 	}
 
@@ -321,7 +341,15 @@ class ExtractCommand extends Command {
 	}
 
 	private static void withJarEntries(File file, ThrowingConsumer callback) throws IOException {
+		withJarEntries(file, null, callback);
+	}
+
+	private static void withJarEntries(File file, ManfiestWriter manfiestWriter, ThrowingConsumer callback)
+			throws IOException {
 		try (JarFile jarFile = new JarFile(file)) {
+			if (manfiestWriter != null) {
+				manfiestWriter.writeManifest(jarFile);
+			}
 			Enumeration<JarEntry> entries = jarFile.entries();
 			while (entries.hasMoreElements()) {
 				JarEntry entry = entries.nextElement();
@@ -350,6 +378,13 @@ class ExtractCommand extends Command {
 
 	}
 
+	@FunctionalInterface
+	private interface ManfiestWriter {
+
+		void writeManifest(JarFile sourceJarFile) throws IOException;
+
+	}
+
 	@FunctionalInterface
 	private interface ThrowingConsumer {
 

spring-boot-project/spring-boot-tools/spring-boot-jarmode-tools/src/test/java/org/springframework/boot/jarmode/tools/AbstractJarModeTests.java

@@ -16,12 +16,14 @@
 
 package org.springframework.boot.jarmode.tools;
 
+import java.io.BufferedOutputStream;
 import java.io.File;
 import java.io.FileOutputStream;
 import java.io.IOException;
 import java.io.InputStream;
 import java.nio.file.Files;
 import java.nio.file.Path;
+import java.nio.file.attribute.BasicFileAttributeView;
 import java.nio.file.attribute.FileTime;
 import java.time.Instant;
 import java.util.ArrayDeque;
@@ -78,18 +80,13 @@ abstract class AbstractJarModeTests {
 			String... entries) throws IOException {
 		Assert.state(entries.length % 2 == 0, "Entries must be key value pairs");
 		File file = new File(this.tempDir, "test.jar");
-		try (JarOutputStream jar = new JarOutputStream(new FileOutputStream(file), manifest)) {
+		try (JarOutputStream jar = new JarOutputStream(new FileOutputStream(file))) {
+			ZipEntry manifestEntry = createEntry(JarFile.MANIFEST_NAME, creationTime, lastModifiedTime, lastAccessTime);
+			jar.putNextEntry(manifestEntry);
+			manifest.write(new BufferedOutputStream(jar));
+			jar.closeEntry();
 			for (int i = 0; i < entries.length; i += 2) {
-				ZipEntry entry = new ZipEntry(entries[i]);
-				if (creationTime != null) {
-					entry.setCreationTime(FileTime.from(creationTime));
-				}
-				if (lastModifiedTime != null) {
-					entry.setLastModifiedTime(FileTime.from(lastModifiedTime));
-				}
-				if (lastAccessTime != null) {
-					entry.setLastAccessTime(FileTime.from(lastAccessTime));
-				}
+				ZipEntry entry = createEntry(entries[i], creationTime, lastModifiedTime, lastAccessTime);
 				jar.putNextEntry(entry);
 				String resource = entries[i + 1];
 				if (resource != null) {
@@ -101,9 +98,29 @@ abstract class AbstractJarModeTests {
 				jar.closeEntry();
 			}
 		}
+		Files.getFileAttributeView(file.toPath(), BasicFileAttributeView.class)
+			.setTimes(asFileTime(lastModifiedTime), asFileTime(lastAccessTime), asFileTime(creationTime));
 		return file;
 	}
 
+	private FileTime asFileTime(Instant instant) {
+		return (instant != null) ? FileTime.from(instant) : null;
+	}
+
+	private ZipEntry createEntry(String name, Instant creationTime, Instant lastModifiedTime, Instant lastAccessTime) {
+		ZipEntry entry = new ZipEntry(name);
+		if (creationTime != null) {
+			entry.setCreationTime(FileTime.from(creationTime));
+		}
+		if (lastModifiedTime != null) {
+			entry.setLastModifiedTime(FileTime.from(lastModifiedTime));
+		}
+		if (lastAccessTime != null) {
+			entry.setLastAccessTime(FileTime.from(lastAccessTime));
+		}
+		return entry;
+	}
+
 	TestPrintStream runCommand(CommandFactory<?> commandFactory, File archive, String... arguments) {
 		Context context = new Context(archive, this.tempDir);
 		Command command = commandFactory.create(context);

spring-boot-project/spring-boot-tools/spring-boot-jarmode-tools/src/test/java/org/springframework/boot/jarmode/tools/ExtractCommandTests.java

@@ -24,9 +24,12 @@ import java.nio.file.attribute.BasicFileAttributeView;
 import java.nio.file.attribute.BasicFileAttributes;
 import java.time.Instant;
 import java.time.temporal.ChronoUnit;
+import java.util.Enumeration;
 import java.util.List;
 import java.util.Map;
 import java.util.jar.Manifest;
+import java.util.zip.ZipEntry;
+import java.util.zip.ZipFile;
 
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Nested;
@@ -79,20 +82,6 @@ class ExtractCommandTests extends AbstractJarModeTests {
 		return runCommand(ExtractCommand::new, archive, args);
 	}
 
-	private void timeAttributes(File file) {
-		try {
-			BasicFileAttributes basicAttributes = Files
-				.getFileAttributeView(file.toPath(), BasicFileAttributeView.class)
-				.readAttributes();
-			assertThat(basicAttributes.lastModifiedTime().toInstant().truncatedTo(ChronoUnit.SECONDS))
-				.as("last modified time")
-				.isEqualTo(LAST_MODIFIED_TIME.truncatedTo(ChronoUnit.SECONDS));
-		}
-		catch (IOException ex) {
-			throw new RuntimeException(ex);
-		}
-	}
-
 	@Nested
 	class Extract {
 
@@ -155,10 +144,48 @@ class ExtractCommandTests extends AbstractJarModeTests {
 		@Test
 		void appliesFileTimes() {
 			run(ExtractCommandTests.this.archive);
-			assertThat(file("test/lib/dependency-1.jar")).exists().satisfies(ExtractCommandTests.this::timeAttributes);
-			assertThat(file("test/lib/dependency-2.jar")).exists().satisfies(ExtractCommandTests.this::timeAttributes);
-			assertThat(file("test/lib/dependency-3-SNAPSHOT.jar")).exists()
-				.satisfies(ExtractCommandTests.this::timeAttributes);
+			assertThat(file("test/lib/dependency-1.jar")).exists().satisfies(this::fileTimeAttributes);
+			assertThat(file("test/lib/dependency-2.jar")).exists().satisfies(this::fileTimeAttributes);
+			assertThat(file("test/lib/dependency-3-SNAPSHOT.jar")).exists().satisfies(this::fileTimeAttributes);
+			assertThat(file("test/test.jar")).exists()
+				.satisfies(this::fileTimeAttributes)
+				.satisfies(this::entryTimeAttributes);
+		}
+
+		private void fileTimeAttributes(File file) {
+			try {
+				BasicFileAttributes basicAttributes = Files
+					.getFileAttributeView(file.toPath(), BasicFileAttributeView.class)
+					.readAttributes();
+				assertThat(basicAttributes.lastModifiedTime().toInstant().truncatedTo(ChronoUnit.SECONDS))
+					.as("last modified time")
+					.isEqualTo(LAST_MODIFIED_TIME.truncatedTo(ChronoUnit.SECONDS));
+			}
+			catch (IOException ex) {
+				throw new RuntimeException(ex);
+			}
+		}
+
+		private void entryTimeAttributes(File file) {
+			try {
+				try (ZipFile archiveZipFile = new ZipFile(ExtractCommandTests.this.archive)) {
+					try (ZipFile zipFile = new ZipFile(file)) {
+						Enumeration<? extends ZipEntry> entries = zipFile.entries();
+						while (entries.hasMoreElements()) {
+							ZipEntry entry = entries.nextElement();
+							ZipEntry archiveEntry = archiveZipFile.getEntry(entry.getName());
+							if (archiveEntry != null) {
+								assertThat(entry.getLastModifiedTime()).isEqualTo(archiveEntry.getLastModifiedTime());
+								assertThat(entry.getLastAccessTime()).isEqualTo(archiveEntry.getLastAccessTime());
+								assertThat(entry.getCreationTime()).isEqualTo(archiveEntry.getCreationTime());
+							}
+						}
+					}
+				}
+			}
+			catch (IOException ex) {
+				throw new RuntimeException(ex);
+			}
 		}
 
 		@Test