1 /*
   2  * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 #include <string.h>
  27 
  28 #include "java_net_InetAddress.h"
  29 #include "net_util.h"
  30 
  31 /************************************************************************
  32  * InetAddress
  33  */
  34 
  35 jclass ia_class;
  36 jclass iac_class;
  37 jfieldID ia_holderID;
  38 jfieldID iac_addressID;
  39 jfieldID iac_familyID;
  40 jfieldID iac_hostNameID;
  41 jfieldID ia_preferIPv6AddressID;
  42 
  43 static int ia_initialized = 0;
  44 
  45 /*
  46  * Class:     java_net_InetAddress
  47  * Method:    init
  48  * Signature: ()V
  49  */
  50 JNIEXPORT void JNICALL
  51 Java_java_net_InetAddress_init(JNIEnv *env, jclass cls) {
  52     if (!ia_initialized) {
  53         jclass c = (*env)->FindClass(env,"java/net/InetAddress");
  54         CHECK_NULL(c);
  55         ia_class = (*env)->NewGlobalRef(env, c);
  56         CHECK_NULL(ia_class);
  57         c = (*env)->FindClass(env,"java/net/InetAddress$InetAddressHolder");
  58         CHECK_NULL(c);
  59         iac_class = (*env)->NewGlobalRef(env, c);
  60         ia_holderID = (*env)->GetFieldID(env, ia_class, "holder", "Ljava/net/InetAddress$InetAddressHolder;");
  61         CHECK_NULL(ia_holderID);
  62         ia_preferIPv6AddressID = (*env)->GetStaticFieldID(env, ia_class, "preferIPv6Address", "Z");
  63         CHECK_NULL(ia_preferIPv6AddressID);
  64 
  65         iac_addressID = (*env)->GetFieldID(env, iac_class, "address", "I");
  66         CHECK_NULL(iac_addressID);
  67         iac_familyID = (*env)->GetFieldID(env, iac_class, "family", "I");
  68         CHECK_NULL(iac_familyID);
  69         iac_hostNameID = (*env)->GetFieldID(env, iac_class, "hostName", "Ljava/lang/String;");
  70         CHECK_NULL(iac_hostNameID);
  71         ia_initialized = 1;
  72     }
  73 }