1 /*
2 * Copyright (c) 1998, 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 "jni.h"
27 #include "jvm.h"
28 #include "jni_util.h"
29 #include "net_util.h"
30
31 int IPv6_supported() ;
32
33 static int IPv6_available;
34
35 JNIEXPORT jint JNICALL ipv6_available()
36 {
37 return IPv6_available ;
38 }
39
40 JNIEXPORT jint JNICALL
41 JNI_OnLoad(JavaVM *vm, void *reserved)
42 {
43 JNIEnv *env;
44 jclass iCls;
45 jmethodID mid;
46 jstring s;
47 jint preferIPv4Stack;
48
49 if ((*vm)->GetEnv(vm, (void**) &env, JNI_VERSION_1_2) != JNI_OK) {
50 return JNI_EVERSION; /* JNI version not supported */
51 }
52
53 iCls = (*env)->FindClass(env, "java/lang/Boolean");
54 CHECK_NULL_RETURN(iCls, JNI_VERSION_1_2);
55 mid = (*env)->GetStaticMethodID(env, iCls, "getBoolean", "(Ljava/lang/String;)Z");
56 CHECK_NULL_RETURN(mid, JNI_VERSION_1_2);
57 s = (*env)->NewStringUTF(env, "java.net.preferIPv4Stack");
58 CHECK_NULL_RETURN(s, JNI_VERSION_1_2);
59 preferIPv4Stack = (*env)->CallStaticBooleanMethod(env, iCls, mid, s);
60
61 /*
|
1 /*
2 * Copyright (c) 1998, 2015, 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 "jni.h"
27 #include "jvm.h"
28 #include "jni_util.h"
29 #include "net_util.h"
30
31 int IPv6_supported() ;
32
33 static int IPv6_available;
34
35 JNIEXPORT jint JNICALL ipv6_available()
36 {
37 return IPv6_available ;
38 }
39
40 JNIEXPORT jint JNICALL
41 DEF_JNI_OnLoad(JavaVM *vm, void *reserved)
42 {
43 JNIEnv *env;
44 jclass iCls;
45 jmethodID mid;
46 jstring s;
47 jint preferIPv4Stack;
48
49 if ((*vm)->GetEnv(vm, (void**) &env, JNI_VERSION_1_2) != JNI_OK) {
50 return JNI_EVERSION; /* JNI version not supported */
51 }
52
53 iCls = (*env)->FindClass(env, "java/lang/Boolean");
54 CHECK_NULL_RETURN(iCls, JNI_VERSION_1_2);
55 mid = (*env)->GetStaticMethodID(env, iCls, "getBoolean", "(Ljava/lang/String;)Z");
56 CHECK_NULL_RETURN(mid, JNI_VERSION_1_2);
57 s = (*env)->NewStringUTF(env, "java.net.preferIPv4Stack");
58 CHECK_NULL_RETURN(s, JNI_VERSION_1_2);
59 preferIPv4Stack = (*env)->CallStaticBooleanMethod(env, iCls, mid, s);
60
61 /*
|