104 lines
2.8 KiB
Java
104 lines
2.8 KiB
Java
package com.novitechie.rules;
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import com.janetfilter.core.commons.DebugInfo;
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import java.io.BufferedReader;
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import java.io.ByteArrayInputStream;
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import java.io.File;
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import java.io.FileOutputStream;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.StringReader;
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import java.nio.file.Path;
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import java.util.Collections;
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import java.util.List;
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import java.util.Locale;
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/**
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* @author YeloChick
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*/
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public class VMOptionsRule {
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private static final String VMOPTIONS_SUFFIX = ".vmoptions";
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public static Path hook() {
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DebugInfo.output("======================Hide VMOptions");
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String tmpdir = System.getProperty("java.io.tmpdir");
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File file = new File(tmpdir, "fake.vmoptions");
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if (file.exists()) {
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return file.toPath();
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}
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try (FileOutputStream fos = new FileOutputStream(file)) {
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fos.write("# This file is created by plugin-privacy".getBytes());
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return file.toPath();
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} catch (IOException e) {
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DebugInfo.output("create temp file error", e);
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return null;
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}
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}
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public static boolean shouldHide(Path path) {
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return isVMOptions(path) && StackTraceRule.check();
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}
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public static File redirectFile(File file) {
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if (isVMOptions(file) && StackTraceRule.check()) {
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return hookFile(file);
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}
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return file;
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}
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public static String redirectPath(String path) {
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if (isVMOptions(path) && StackTraceRule.check()) {
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return hookFile(new File(path)).getPath();
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}
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return path;
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}
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public static byte[] emptyBytes(Path path) {
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log(path);
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return new byte[0];
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}
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public static String emptyString(Path path) {
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log(path);
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return "";
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}
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public static List<String> emptyLines(Path path) {
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log(path);
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return Collections.emptyList();
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}
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public static InputStream emptyInputStream(Path path) {
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log(path);
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return new ByteArrayInputStream(new byte[0]);
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}
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public static BufferedReader emptyBufferedReader(Path path) {
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log(path);
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return new BufferedReader(new StringReader(""));
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}
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private static boolean isVMOptions(Path path) {
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return path != null && isVMOptions(path.toString());
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}
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private static boolean isVMOptions(File file) {
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return file != null && isVMOptions(file.getPath());
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}
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private static boolean isVMOptions(String path) {
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return path != null && path.toLowerCase(Locale.ROOT).endsWith(VMOPTIONS_SUFFIX);
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}
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private static File hookFile(File fallback) {
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Path path = hook();
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return path == null ? fallback : path.toFile();
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}
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private static void log(Path path) {
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DebugInfo.output("======================Hide VMOptions read: " + path);
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}
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}
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