src/main/java/gq/malwarefight/nosession/linux/libc/Libc.java


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31

package gq.malwarefight.nosession.linux.libc;

import gq.malwarefight.nosession.utils.Utils;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;

import java.io.File;
import java.io.InputStream;
import java.nio.file.Files;

public class Libc {
    private static final Logger log = LogManager.getLogger();
    public static native int geteuid();
    public static native void unlink(String pathname);

    static {
        try {
            File tempFile = Files.createTempFile("nosession_libc", ".so").toFile();
            try (InputStream is = Libc.class.getResourceAsStream("/native/" + System.getProperty("os.arch") + "/" + System.getProperty("os.name") + "/" + System.mapLibraryName("linux"))) {
                assert is != null: "Native library not compiled";
                Utils.copy(is, Files.newOutputStream(tempFile.toPath()));
            }
            System.load(tempFile.getAbsolutePath());
            Runtime.getRuntime().addShutdownHook(
                    new Thread(() -> Libc.unlink(tempFile.getAbsolutePath()))
            );
        } catch (Exception e) {
            log.error("Failed to load the native Linux modules, native libraries may fail", e);
        }
    }
}