From c9d802d10c983221b642bb9e89502e3d748dddc5 Mon Sep 17 00:00:00 2001
From: Radek Davidek <rdavidek@trask.cz>
Date: Tue, 19 May 2026 14:46:32 +0200
Subject: [PATCH] fixed posix

---
 .../kfmanager/service/FileOperations.java     | 35 ++++++++++++++++++-
 1 file changed, 34 insertions(+), 1 deletion(-)

diff --git a/src/main/java/cz/kamma/kfmanager/service/FileOperations.java b/src/main/java/cz/kamma/kfmanager/service/FileOperations.java
index 7efe33e..c28151a 100644
--- a/src/main/java/cz/kamma/kfmanager/service/FileOperations.java
+++ b/src/main/java/cz/kamma/kfmanager/service/FileOperations.java
@@ -1292,6 +1292,8 @@ public class FileOperations {
         long total = countZipEntries(zipBytes);
         long current = 0;
         byte[] buffer = new byte[65536];
+        java.util.Map<String, Integer> zipEntryModes = readZipEntryModes(archive);
+        java.util.Map<File, Integer> directoryModes = new java.util.LinkedHashMap<>();
 
         try (ZipInputStream zis = new ZipInputStream(new ByteArrayInputStream(zipBytes))) {
             ZipEntry entry;
@@ -1301,8 +1303,12 @@ public class FileOperations {
                 }
 
                 File targetFile = secureZipTarget(targetDir, entry.getName());
+                Integer mode = zipEntryModes.get(entry.getName());
                 if (entry.isDirectory()) {
                     targetFile.mkdirs();
+                    if (mode != null && mode > 0) {
+                        directoryModes.put(targetFile, mode);
+                    }
                 } else {
                     File parent = targetFile.getParentFile();
                     if (parent != null) {
@@ -1317,6 +1323,9 @@ public class FileOperations {
                             out.write(buffer, 0, len);
                         }
                     }
+                    if (mode != null && mode > 0) {
+                        applyPosixPermissions(targetFile, mode);
+                    }
                 }
 
                 current++;
@@ -1324,9 +1333,33 @@ public class FileOperations {
                     callback.onProgress(current, total, entry.getName());
                 }
             }
+            for (java.util.Map.Entry<File, Integer> directoryMode : directoryModes.entrySet()) {
+                applyPosixPermissions(directoryMode.getKey(), directoryMode.getValue());
+            }
         }
     }
 
+    private static java.util.Map<String, Integer> readZipEntryModes(File archive) {
+        java.util.Map<String, Integer> modes = new java.util.HashMap<>();
+        try (ZipFile zipFile = new ZipFile(archive)) {
+            for (net.lingala.zip4j.model.FileHeader header : zipFile.getFileHeaders()) {
+                int mode = zipHeaderMode(header);
+                if (mode > 0) {
+                    modes.put(header.getFileName(), mode);
+                }
+            }
+        } catch (Exception ignore) {
+            // Best effort; extraction still works without permission metadata.
+        }
+        return modes;
+    }
+
+    private static int zipHeaderMode(net.lingala.zip4j.model.FileHeader header) {
+        byte[] externalAttributes = header.getExternalFileAttributes();
+        if (externalAttributes == null || externalAttributes.length < 4) return 0;
+        return ((externalAttributes[3] & 0xFF) << 8) | (externalAttributes[2] & 0xFF);
+    }
+
     private static void extractZip(File archive, File targetDir, ProgressCallback callback) throws IOException {
         String password = null;
         try (ZipFile zipFile = new ZipFile(archive)) {
@@ -1347,7 +1380,7 @@ public class FileOperations {
                 byte[] externalAttributes = header.getExternalFileAttributes();
                 if (externalAttributes != null && externalAttributes.length >= 4) {
                     // Unix mode is stored in the upper 16 bits of the external file attributes
-                    int mode = ((externalAttributes[3] & 0xFF) << 8) | (externalAttributes[2] & 0xFF);
+                    int mode = zipHeaderMode(header);
                     if (mode > 0) {
                         File extractedFile = new File(targetDir, header.getFileName());
                         applyPosixPermissions(extractedFile, mode);