Merge branch '2.1.x' into 2.2.x

Closes gh-19713

spring-boot-project/spring-boot-tools/spring-boot-loader/src/main/java/org/springframework/boot/loader/jar/CentralDirectoryFileHeader.java

 /*
- * Copyright 2012-2019 the original author or authors.
+ * Copyright 2012-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -17,8 +17,11 @@
 package org.springframework.boot.loader.jar;
 
 import java.io.IOException;
-import java.time.LocalDateTime;
 import java.time.ZoneId;
+import java.time.ZonedDateTime;
+import java.time.temporal.ChronoField;
+import java.time.temporal.ChronoUnit;
+import java.time.temporal.ValueRange;
 
 import org.springframework.boot.loader.data.RandomAccessData;
 
@@ -27,6 +30,7 @@ import org.springframework.boot.loader.data.RandomAccessData;
  *
  * @author Phillip Webb
  * @author Andy Wilkinson
+ * @author Dmytro Nosan
  * @see <a href="https://en.wikipedia.org/wiki/Zip_%28file_format%29">Zip File Format</a>
  */
 
@@ -124,10 +128,14 @@ final class CentralDirectoryFileHeader implements FileHeader {
 	 * @return the date and time as milliseconds since the epoch
 	 */
 	private long decodeMsDosFormatDateTime(long datetime) {
-		LocalDateTime localDateTime = LocalDateTime.of((int) (((datetime >> 25) & 0x7f) + 1980),
-				(int) ((datetime >> 21) & 0x0f), (int) ((datetime >> 16) & 0x1f), (int) ((datetime >> 11) & 0x1f),
-				(int) ((datetime >> 5) & 0x3f), (int) ((datetime << 1) & 0x3e));
-		return localDateTime.toEpochSecond(ZoneId.systemDefault().getRules().getOffset(localDateTime)) * 1000;
+		int year = getChronoValue(((datetime >> 25) & 0x7f) + 1980, ChronoField.YEAR);
+		int month = getChronoValue((datetime >> 21) & 0x0f, ChronoField.MONTH_OF_YEAR);
+		int day = getChronoValue((datetime >> 16) & 0x1f, ChronoField.DAY_OF_MONTH);
+		int hour = getChronoValue((datetime >> 11) & 0x1f, ChronoField.HOUR_OF_DAY);
+		int minute = getChronoValue((datetime >> 5) & 0x3f, ChronoField.MINUTE_OF_HOUR);
+		int second = getChronoValue((datetime << 1) & 0x3e, ChronoField.SECOND_OF_MINUTE);
+		return ZonedDateTime.of(year, month, day, hour, minute, second, 0, ZoneId.systemDefault()).toInstant()
+				.truncatedTo(ChronoUnit.SECONDS).toEpochMilli();
 	}
 
 	long getCrc() {
@@ -176,4 +184,9 @@ final class CentralDirectoryFileHeader implements FileHeader {
 		return fileHeader;
 	}
 
+	private static int getChronoValue(long value, ChronoField field) {
+		ValueRange range = field.range();
+		return Math.toIntExact(Math.min(Math.max(value, range.getMinimum()), range.getMaximum()));
+	}
+
 }

spring-boot-project/spring-boot-tools/spring-boot-loader/src/test/java/org/springframework/boot/loader/jar/JarFileTests.java

@@ -28,6 +28,8 @@ import java.net.URL;
 import java.net.URLClassLoader;
 import java.nio.charset.Charset;
 import java.nio.charset.StandardCharsets;
+import java.nio.file.attribute.FileTime;
+import java.time.Instant;
 import java.util.Collections;
 import java.util.Enumeration;
 import java.util.List;
@@ -47,6 +49,7 @@ import org.junit.jupiter.api.io.TempDir;
 
 import org.springframework.boot.loader.TestJarCreator;
 import org.springframework.boot.loader.data.RandomAccessDataFile;
+import org.springframework.test.util.ReflectionTestUtils;
 import org.springframework.util.FileCopyUtils;
 import org.springframework.util.StreamUtils;
 
@@ -62,6 +65,7 @@ import static org.mockito.Mockito.verify;
  * @author Phillip Webb
  * @author Martin Lau
  * @author Andy Wilkinson
+ * @author Madhura Bhave
  */
 @ExtendWith(JarUrlProtocolHandler.class)
 class JarFileTests {
@@ -578,6 +582,26 @@ class JarFileTests {
 		return bytes.toByteArray();
 	}
 
+	@Test
+	void jarFileEntryWithEpochTimeOfZeroShouldNotFail() throws Exception {
+		File file = new File(this.tempDir, "timed.jar");
+		FileOutputStream fileOutputStream = new FileOutputStream(file);
+		try (JarOutputStream jarOutputStream = new JarOutputStream(fileOutputStream)) {
+			jarOutputStream.setComment("outer");
+			JarEntry entry = new JarEntry("1.dat");
+			entry.setLastModifiedTime(FileTime.from(Instant.EPOCH));
+			ReflectionTestUtils.setField(entry, "xdostime", 0);
+			jarOutputStream.putNextEntry(entry);
+			jarOutputStream.write(new byte[] { (byte) 1 });
+			jarOutputStream.closeEntry();
+		}
+		JarFile jarFile = new JarFile(file);
+		Enumeration<java.util.jar.JarEntry> entries = jarFile.entries();
+		JarEntry entry = entries.nextElement();
+		assertThat(entry.getLastModifiedTime().toInstant()).isEqualTo(Instant.EPOCH);
+		assertThat(entry.getName()).isEqualTo("1.dat");
+	}
+
 	private int getJavaVersion() {
 		try {
 			Object runtimeVersion = Runtime.class.getMethod("version").invoke(null);