From cc175505dbc2c6e0e2fd484e6a38cbccfecc4acd Mon Sep 17 00:00:00 2001
From: ShulkerSakura <2531493755@qq.com>
Date: Thu, 4 Sep 2025 19:25:08 +0800
Subject: [PATCH] Add Admin Checker

---
 .../java/org/jackhuang/hmcl/Launcher.java     |  6 +--
 .../org/jackhuang/hmcl/util/AdminChecker.java | 43 +++++++++++++++++++
 2 files changed, 45 insertions(+), 4 deletions(-)
 create mode 100755 HMCL/src/main/java/org/jackhuang/hmcl/util/AdminChecker.java

diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/Launcher.java b/HMCL/src/main/java/org/jackhuang/hmcl/Launcher.java
index efa971ced..b060de4b6 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/Launcher.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/Launcher.java
@@ -29,15 +29,12 @@ import javafx.stage.Stage;
 import org.jackhuang.hmcl.setting.ConfigHolder;
 import org.jackhuang.hmcl.setting.SambaException;
 import org.jackhuang.hmcl.ui.FXUtils;
-import org.jackhuang.hmcl.util.FileSaver;
+import org.jackhuang.hmcl.util.*;
 import org.jackhuang.hmcl.task.AsyncTaskExecutor;
 import org.jackhuang.hmcl.task.Schedulers;
 import org.jackhuang.hmcl.ui.Controllers;
 import org.jackhuang.hmcl.upgrade.UpdateChecker;
 import org.jackhuang.hmcl.upgrade.UpdateHandler;
-import org.jackhuang.hmcl.util.CrashReporter;
-import org.jackhuang.hmcl.util.Lang;
-import org.jackhuang.hmcl.util.StringUtils;
 import org.jackhuang.hmcl.util.io.JarUtils;
 import org.jackhuang.hmcl.util.platform.Architecture;
 import org.jackhuang.hmcl.util.platform.CommandBuilder;
@@ -254,6 +251,7 @@ public final class Launcher extends Application {
             LOG.info("Java Version: " + System.getProperty("java.version") + ", " + System.getProperty("java.vendor"));
             LOG.info("Java VM Version: " + System.getProperty("java.vm.name") + " (" + System.getProperty("java.vm.info") + "), " + System.getProperty("java.vm.vendor"));
             LOG.info("Java Home: " + System.getProperty("java.home"));
+            LOG.info("User Privilege: " + AdminChecker.isAdmin());
             LOG.info("Current Directory: " + Metadata.CURRENT_DIRECTORY);
             LOG.info("HMCL Global Directory: " + Metadata.HMCL_GLOBAL_DIRECTORY);
             LOG.info("HMCL Current Directory: " + Metadata.HMCL_CURRENT_DIRECTORY);
diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/util/AdminChecker.java b/HMCL/src/main/java/org/jackhuang/hmcl/util/AdminChecker.java
new file mode 100755
index 000000000..b3fcb95e7
--- /dev/null
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/util/AdminChecker.java
@@ -0,0 +1,43 @@
+package org.jackhuang.hmcl.util;
+
+import org.jackhuang.hmcl.util.platform.OperatingSystem;
+import org.jackhuang.hmcl.util.platform.windows.WinReg;
+
+public class AdminChecker {
+
+    public static boolean isAdmin() {
+        if (OperatingSystem.CURRENT_OS == OperatingSystem.WINDOWS) {
+            return isWindowsAdmin();
+        } else if (OperatingSystem.CURRENT_OS.isLinuxOrBSD() && OperatingSystem.CURRENT_OS == OperatingSystem.MACOS) {
+            return isUnixRoot();
+        } else {
+            // 未知系统，保守返回 false
+            System.err.println("Unknown OS: " + OperatingSystem.CURRENT_OS);
+            return false;
+        }
+    }
+
+    private static boolean isWindowsAdmin() {
+        WinReg reg = WinReg.INSTANCE;
+        try {
+            return reg.exists(WinReg.HKEY.HKEY_USERS, "S-1-5-19");
+        } catch (Throwable t) {
+            // 捕获 AccessException、JNA 错误等
+            return false;
+        }
+    }
+
+    private static boolean isUnixRoot() {
+        try {
+            ProcessBuilder pb = new ProcessBuilder("id", "-u");
+            Process process = pb.start();
+            java.util.Scanner scanner = new java.util.Scanner(process.getInputStream());
+            String uid = scanner.hasNext() ? scanner.next() : "";
+            scanner.close();
+            process.waitFor();
+            return "0".equals(uid.trim());
+        } catch (Exception e) {
+            return false;
+        }
+    }
+}
\ No newline at end of file