1/*
2 * Copyright 2017 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17/*
18 * Copyright 2017 The Netty Project
19 *
20 * The Netty Project licenses this file to you under the Apache License,
21 * version 2.0 (the "License"); you may not use this file except in compliance
22 * with the License. You may obtain a copy of the License at:
23 *
24 *   http://www.apache.org/licenses/LICENSE-2.0
25 *
26 * Unless required by applicable law or agreed to in writing, software
27 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
28 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
29 * License for the specific language governing permissions and limitations
30 * under the License.
31 */
32package org.conscrypt;
33
34/**
35 * A Utility to Call the {@link System#load(String)} or {@link System#loadLibrary(String)}.
36 * Because the {@link System#load(String)} and {@link System#loadLibrary(String)} are both
37 * CallerSensitive, it will load the native library into its caller's {@link ClassLoader}.
38 * In OSGi environment, we need this helper to delegate the calling to {@link System#load(String)}
39 * and it should be as simple as possible. It will be injected into the native library's
40 * ClassLoader when it is undefined. And therefore, when the defined new helper is invoked,
41 * the native library would be loaded into the native library's ClassLoader, not the
42 * caller's ClassLoader.
43 */
44final class NativeLibraryUtil {
45    /**
46     * Delegate the calling to {@link System#load(String)} or {@link System#loadLibrary(String)}.
47     * @param libName - The native library path or name
48     * @param absolute - Whether the native library will be loaded by path or by name
49     */
50    public static void loadLibrary(String libName, boolean absolute) {
51        if (absolute) {
52            System.load(libName);
53        } else {
54            System.loadLibrary(libName);
55        }
56    }
57
58    private NativeLibraryUtil() {
59        // Utility
60    }
61}