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permissions for archives fixed

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This commit is contained in:
Radek Davidek 2026-05-18 17:05:45 +02:00
parent 4ca854f6c2
commit 74af9c49d7
1 changed files with 58 additions and 0 deletions
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58
src/main/java/cz/kamma/kfmanager/service/FileOperations.java
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@ -13,11 +13,15 @@ import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.ByteArrayInputStream;
import java.nio.file.FileSystems;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.attribute.PosixFilePermission;
import java.util.ArrayList;
import java.util.Comparator;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import java.util.regex.Pattern;
import java.util.stream.Stream;
import java.util.zip.ZipEntry;
@ -1213,6 +1217,39 @@ public class FileOperations {
}
}
private static void applyPosixPermissions(File file, int mode) {
if (mode <= 0) return;
if (!FileSystems.getDefault().supportedFileAttributeViews().contains("posix")) return;
try {
// mode for Unix is usually the last 9 bits (0777)
// But some sources might provide more (sticky bits, types, etc.)
// We focus on the standard 9-bit permission mask
int permissionMask = mode & 0777;
Set<PosixFilePermission> permissions = new HashSet<>();
// Check OWNER (0700)
if ((permissionMask & 0400) != 0) permissions.add(PosixFilePermission.OWNER_READ);
if ((permissionMask & 0200) != 0) permissions.add(PosixFilePermission.OWNER_WRITE);
if ((permissionMask & 0100) != 0) permissions.add(PosixFilePermission.OWNER_EXECUTE);
// Check GROUP (0070)
if ((permissionMask & 0040) != 0) permissions.add(PosixFilePermission.GROUP_READ);
if ((permissionMask & 0020) != 0) permissions.add(PosixFilePermission.GROUP_WRITE);
if ((permissionMask & 0010) != 0) permissions.add(PosixFilePermission.GROUP_EXECUTE);
// Check OTHERS (0007)
if ((permissionMask & 0004) != 0) permissions.add(PosixFilePermission.OTHERS_READ);
if ((permissionMask & 0002) != 0) permissions.add(PosixFilePermission.OTHERS_WRITE);
if ((permissionMask & 0001) != 0) permissions.add(PosixFilePermission.OTHERS_EXECUTE);
Files.setPosixFilePermissions(file.toPath(), permissions);
} catch (Exception e) {
// Best effort
}
}
/**
* Extract ZIP/JAR/WAR by first loading archive bytes to memory and then
* reading entries from ZipInputStream.
@ -1289,6 +1326,18 @@ public class FileOperations {
if (callback != null && callback.isCancelled()) break;
net.lingala.zip4j.model.FileHeader header = headers.get(i);
zipFile.extractFile(header, targetDir.getAbsolutePath());
// Preserve permissions for Linux/Unix
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);
if (mode > 0) {
File extractedFile = new File(targetDir, header.getFileName());
applyPosixPermissions(extractedFile, mode);
}
}
if (callback != null) {
callback.onProgress(i + 1, total, header.getFileName());
}
@ -1429,6 +1478,15 @@ public class FileOperations {
}
}
}
// Preserve permissions for Linux/Unix
int mode = entry.getMode();
if (mode > 0) {
// For TAR entries, if high bits are set (directory/file type info),
// we ensure we are looking at the standard permission bits.
applyPosixPermissions(targetFile, mode);
}
if (callback != null) {
callback.onProgress(0, 0, entry.getName()); // 0/0 because we don't know total
}