From 888487021de9c5b9048cc9c84c14a54d9c3216ad Mon Sep 17 00:00:00 2001
From: lgjint <78463565+lgjint@users.noreply.github.com>
Date: Sat, 1 Jun 2024 11:06:53 +0800
Subject: [PATCH] Add KernelSU root permission detection for auto-redirect

---
 inbound/tun_auto_redirect.go | 19 +++++++++++--------
 1 file changed, 11 insertions(+), 8 deletions(-)

diff --git a/inbound/tun_auto_redirect.go b/inbound/tun_auto_redirect.go
index 8ebc04d2..c79232f7 100644
--- a/inbound/tun_auto_redirect.go
+++ b/inbound/tun_auto_redirect.go
@@ -61,17 +61,20 @@ func newAutoRedirect(t *Tun) (*tunAutoRedirect, error) {
 				suPath string
 				err    error
 			)
-			if t.platformInterface != nil {
-				suPath, err = exec.LookPath("/bin/su")
-			} else {
-				suPath, err = exec.LookPath("su")
+			for _, suPath = range []string{
+				"su",
+				"/system/bin/su",
+			} {
+				suPath, err = exec.LookPath(suPath)
+				if err == nil {
+					break
+				}
 			}
-			if err == nil {
-				s.androidSu = true
-				s.suPath = suPath
-			} else {
+			if err != nil {
 				return nil, E.Extend(E.Cause(err, "root permission is required for auto redirect"), os.Getenv("PATH"))
 			}
+			s.androidSu = true
+			s.suPath = suPath
 		}
 	} else {
 		err := s.initializeNfTables()