Replace usages of JZlib with native Java Platform functionality

core/src/main/java/hudson/FilePath.java

@@ -31,8 +31,6 @@
 import static hudson.Util.fixEmptyAndTrim;
 
 import com.google.common.annotations.VisibleForTesting;
-import com.jcraft.jzlib.GZIPInputStream;
-import com.jcraft.jzlib.GZIPOutputStream;
 import edu.umd.cs.findbugs.annotations.CheckForNull;
 import edu.umd.cs.findbugs.annotations.NonNull;
 import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
@@ -61,7 +59,6 @@
 import hudson.util.ExceptionCatchingThreadFactory;
 import hudson.util.FileVisitor;
 import hudson.util.FormValidation;
-import hudson.util.HeadBufferingStream;
 import hudson.util.IOUtils;
 import hudson.util.NamingThreadFactory;
 import hudson.util.io.Archiver;
@@ -124,6 +121,8 @@
 import java.util.logging.Logger;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
+import java.util.zip.GZIPInputStream;
+import java.util.zip.GZIPOutputStream;
 import jenkins.MasterToSlaveFileCallable;
 import jenkins.SlaveToMasterFileCallable;
 import jenkins.model.Jenkins;
@@ -888,15 +887,8 @@ public OutputStream compress(OutputStream out) {
         },
         GZIP {
             @Override
-            public InputStream extract(InputStream _in) throws IOException {
-                HeadBufferingStream in = new HeadBufferingStream(_in, SIDE_BUFFER_SIZE);
-                try {
-                    return new GZIPInputStream(in, 8192, true);
-                } catch (IOException e) {
-                    // various people reported "java.io.IOException: Not in GZIP format" here, so diagnose this problem better
-                    in.fillSide();
-                    throw new IOException(e.getMessage() + "\nstream=" + Util.toHexString(in.getSideBuffer()), e);
-                }
+            public InputStream extract(InputStream in) throws IOException {
+                return new GZIPInputStream(new BufferedInputStream(in));
             }
 
             @Override

core/src/main/java/hudson/console/AnnotatedLargeText.java

@@ -28,8 +28,6 @@
 
 import static java.lang.Math.abs;
 
-import com.jcraft.jzlib.GZIPInputStream;
-import com.jcraft.jzlib.GZIPOutputStream;
 import edu.umd.cs.findbugs.annotations.CheckReturnValue;
 import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
 import hudson.remoting.ObjectInputStreamEx;
@@ -45,6 +43,8 @@
 import java.nio.charset.StandardCharsets;
 import java.util.Base64;
 import java.util.concurrent.TimeUnit;
+import java.util.zip.GZIPInputStream;
+import java.util.zip.GZIPOutputStream;
 import javax.crypto.Cipher;
 import javax.crypto.CipherInputStream;
 import javax.crypto.CipherOutputStream;

core/src/main/java/hudson/console/ConsoleNote.java

@@ -24,8 +24,6 @@
 
 package hudson.console;
 
-import com.jcraft.jzlib.GZIPInputStream;
-import com.jcraft.jzlib.GZIPOutputStream;
 import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
 import hudson.ExtensionPoint;
 import hudson.Functions;
@@ -50,6 +48,8 @@
 import java.util.Base64;
 import java.util.Collection;
 import java.util.List;
+import java.util.zip.GZIPInputStream;
+import java.util.zip.GZIPOutputStream;
 import jenkins.model.Jenkins;
 import jenkins.security.HMACConfidentialKey;
 import jenkins.util.JenkinsJVM;

core/src/main/java/hudson/model/Run.java

@@ -33,7 +33,6 @@
 import static java.util.logging.Level.SEVERE;
 import static java.util.logging.Level.WARNING;
 
-import com.jcraft.jzlib.GZIPInputStream;
 import com.thoughtworks.xstream.XStream;
 import edu.umd.cs.findbugs.annotations.CheckForNull;
 import edu.umd.cs.findbugs.annotations.NonNull;
@@ -106,6 +105,7 @@
 import java.util.Set;
 import java.util.logging.Level;
 import java.util.logging.Logger;
+import java.util.zip.GZIPInputStream;
 import javax.servlet.ServletException;
 import javax.servlet.http.HttpServletResponse;
 import jenkins.model.ArtifactManager;

core/src/main/java/hudson/model/UsageStatistics.java

@@ -26,7 +26,6 @@
 
 import static java.util.concurrent.TimeUnit.DAYS;
 
-import com.jcraft.jzlib.GZIPOutputStream;
 import edu.umd.cs.findbugs.annotations.NonNull;
 import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
 import hudson.Extension;
@@ -56,6 +55,7 @@
 import java.util.List;
 import java.util.logging.Level;
 import java.util.logging.Logger;
+import java.util.zip.GZIPOutputStream;
 import javax.crypto.Cipher;
 import javax.crypto.CipherInputStream;
 import javax.crypto.CipherOutputStream;

core/src/main/java/hudson/util/CompressedFile.java

@@ -24,8 +24,6 @@
 
 package hudson.util;
 
-import com.jcraft.jzlib.GZIPInputStream;
-import com.jcraft.jzlib.GZIPOutputStream;
 import hudson.Util;
 import java.io.File;
 import java.io.FileNotFoundException;
@@ -43,6 +41,8 @@
 import java.util.concurrent.TimeUnit;
 import java.util.logging.Level;
 import java.util.logging.Logger;
+import java.util.zip.GZIPInputStream;
+import java.util.zip.GZIPOutputStream;
 
 /**
  * Represents write-once read-many file that can be optionally compressed