8133196: HTTPS hostname invalid issue with InetAddress

Reviewed-by: chegar, xuelei

src/share/classes/java/net/Inet4Address.java

@@ -117,11 +117,13 @@ class Inet4Address extends InetAddress {
                 holder().address = address;
             }
         }
+        holder().originalHostName = hostName;
     }
     Inet4Address(String hostName, int address) {
         holder().hostName = hostName;
         holder().family = IPv4;
         holder().address = address;
+        holder().originalHostName = hostName;
     }
 
     /**

src/share/classes/java/net/InetAddress.java

@@ -217,7 +217,7 @@ class InetAddress implements java.io.Serializable {
          *
          * Note: May define a new public method in the future if necessary.
          */
-        private String originalHostName;
+        String originalHostName;
 
         InetAddressHolder() {}
 

src/share/native/java/net/InetAddress.c

@@ -38,6 +38,7 @@ jfieldID ia_holderID;
 jfieldID iac_addressID;
 jfieldID iac_familyID;
 jfieldID iac_hostNameID;
+jfieldID iac_origHostNameID;
 jfieldID ia_preferIPv6AddressID;
 
 /*
@@ -64,4 +65,6 @@ Java_java_net_InetAddress_init(JNIEnv *env, jclass cls) {
     iac_familyID = (*env)->GetFieldID(env, iac_class, "family", "I");
     CHECK_NULL(iac_familyID);
     iac_hostNameID = (*env)->GetFieldID(env, iac_class, "hostName", "Ljava/lang/String;");
+    CHECK_NULL(iac_hostNameID);
+    iac_origHostNameID = (*env)->GetFieldID(env, iac_class, "originalHostName", "Ljava/lang/String;");
 }

src/share/native/java/net/net_util.c

@@ -199,6 +199,7 @@ void setInetAddress_hostName(JNIEnv *env, jobject iaObj, jobject host) {
     initInetAddrs(env);
     holder = (*env)->GetObjectField(env, iaObj, ia_holderID);
     (*env)->SetObjectField(env, holder, iac_hostNameID, host);
+    (*env)->SetObjectField(env, holder, iac_origHostNameID, host);
 }
 
 int getInetAddress_addr(JNIEnv *env, jobject iaObj) {

src/share/native/java/net/net_util.h

@@ -53,6 +53,7 @@ extern jclass ia_class;
 extern jfieldID iac_addressID;
 extern jfieldID iac_familyID;
 extern jfieldID iac_hostNameID;
+extern jfieldID iac_origHostNameID;
 extern jfieldID ia_preferIPv6AddressID;
 
 /** (Inet6Address accessors)

test/java/net/InetAddress/getOriginalHostName.java

+/*
+ * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * @test
+ * @bug 8133196
+ * @summary test functionality of getOriginalHostName(InetAddress)
+ */
+
+import java.io.*;
+import java.net.InetAddress;
+
+import sun.misc.JavaNetAccess;
+import sun.misc.SharedSecrets;
+
+public class getOriginalHostName {
+
+    private static final JavaNetAccess jna = SharedSecrets.getJavaNetAccess();
+
+    public static void main(String[] args) throws Exception {
+        final String HOST = "dummyserver.java.net";
+        InetAddress ia = null;
+        ia = InetAddress.getByName(HOST);
+        testInetAddress(ia, HOST);
+        ia = InetAddress.getByName("255.255.255.0");
+        testInetAddress(ia, null);
+        ia = InetAddress.getByAddress(new byte[]{1,1,1,1});
+        testInetAddress(ia, null);
+        ia = InetAddress.getLocalHost();
+        testInetAddress(ia, ia.getHostName());
+        ia = InetAddress.getLoopbackAddress();
+        testInetAddress(ia, ia.getHostName());
+    }
+
+
+    private static void testInetAddress(InetAddress ia, String expected)
+        throws Exception {
+
+        System.out.println("Testing InetAddress: " + ia);
+        System.out.println("Expecting original hostname of : " + expected);
+        String origHostName = jna.getOriginalHostName(ia);
+        System.out.println("via JavaNetAccess: " + origHostName);
+        if (origHostName == null && expected != null) {
+            throw new RuntimeException("Unexpected null. Testing:" + expected);
+        } else if (expected != null && !origHostName.equals(expected)) {
+            throw new RuntimeException("Unexpected hostname :" + origHostName);
+        } else if (expected == null && origHostName != null) {
+            throw new RuntimeException("Unexpected origHostName: " + origHostName);
+        }
+    }
+}