added a package in newer format

README.md

@@ -1,163 +0,0 @@
-# 📦 Packets – Custom Package Manager for Linux
-
-> A fast and minimal package manager written in Go with Lua hooks, local network discovery, and SQLite-based indexing.
-
----
-
-## 📘 Overview
-
-**Packets** is a lightweight package manager for Linux, written in Go. It supports:
-
-- Installation and removal of packages
-- Dependency resolution and upgrading
-- `.tar.zst` compressed packages with `manifest.toml` metadata
-- Lua-based install/remove hooks
-- Local cache with SHA-256 validation
-- Peer-to-peer discovery over LAN
-- Remote package syncing via HTTP
-- SQLite-based local database
-
----
-
-## 📁 Directory Structure
-
-| Path                  | Description                      |
-|-----------------------|----------------------------------|
-| `/etc/packets/`       | Configuration files              |
-| `/opt/packets/`       | Installed package data           |
-| `/var/cache/packets/` | Cached `.tar.zst` package files  |
-
-(This can be changed in `/etc/packets/config.toml`)
-
----
-
-# Available Commands
-
-| Command                   | Description                                                                |
-|---------------------------|----------------------------------------------------------------------------|
-|`packets install <name>`	|    Install a package (resolves dependencies, executes Lua install hook)    |
-|`packets remove <name>`	|    Remove a package (executes Lua remove hook)                             |
-|`packets upgrade <name>`	|    Upgrade a package by checking family and serial in the manifest         |
-|`packets sync [url]`	    |    Synchronize index.db from remote HTTP source                            |
-|`packets serve init/stop`  |    Starts and stop the LAN service daemon                                  |
-|`packets list`	            |    List all installed packages                                             |
-|`packets info`             |    Get technical package information                                       |
-|`packets search`           |    List all packages in index.db                                           |
-
-# 📦 Package Format
-
-Packages must be compressed as .tar.zst and include:
-
-
-- ├── manifest.toml       # Package metadata
-- ├── data/               # Files to install
-- ├── install.lua         # Lua install hook
-- └── remove.lua          # Lua remove hook
-
-
-## Example manifest.toml
-    [Info]
-     name = "packets"
-     version = "1.0.0"
-     description = "offline and online packetmanager"
-     dependencies = []
-     author = "robo"
-     family = "1f84ca15-5077-4f1d-a370-0ec860766eb2"
-     serial = 0
-
-    [Hooks]
-     install = "install.lua"
-     remove = "remove.lua"
-
---
-# 🔄 Installation Process
-
-- Check if package is already cached and validated via SHA-256.
-
-- If not, search the package:
-
-    Via LAN: Sends UDP broadcast (Q:filename) to peers.
-
-    Via HTTP: Downloads from configured mirrors.
-
-    Decompress .tar.zst, install files.
-
-    Execute Lua install hook.
-
-# 🧩 Core Features
-✅ Dependency Resolution
-
-Installs required dependencies listed in the manifest.
-## 🌐 LAN Discovery
-
-Broadcasts package request to devices in the same network via UDP.
-## 📡 Remote Download
-
-Downloads package via HTTP if not found on LAN.
-## 🔒 Security
-
-    SHA-256 checksum validation
-
-    Path validation to avoid exploits (..)
-
-    Safe, sandboxed Lua runtime with limited API
-
-
-# 🌍 Global Variables Available in Lua Scripts
-
-During the execution of install.lua and remove.lua hooks, some global variables are automatically provided to the Lua environment. These help simplify file path handling and access to package-specific directories.
-## Available variables:
-
-|Name	             |Type	  |  Description
-|--------------------|--------|--------------------------------------------------------------------------|
-|packets_package_dir |	string|	Absolute path to the package's data directory (e.g., /opt/packets/...)   | 
-| packets_bin_dir      |  string| Path where executables should be installed (e.g., /usr/bin)            |
-|script              |  string|	Path to the currently executing script (e.g., "install.lua")             |
-|data_dir            |  string|	Path to the /data folder of the current package                          |
-### Example usage in Lua:
-
-        print("Installing into: " .. packets_bin_dir)
-        print("Package data in: " .. data_dir)
-
-        -- Copy a binary to /usr/bin
-        os.copy(path_join(data_dir, "htop"), path_join(packets_bin_dir, "htop"))
-
-These variables are preloaded in the Lua environment—no need to manually declare or initialize them.
-
-
-## 🛠️ Allowed Lua API (install/remove hooks)
-
-To ensure security, only a limited set of safe functions are exposed in Lua hooks:
-
-    os.remove(path)
-    os.rename(old, new)
-    os.copy(source, target)
-    os.symlink(source, target)
-    io.open(path, mode)
-    os.mkdir(path, filemode)
-    path_join(...) 
-
-### Note: Dangerous functions like os.execute, os.getenv, etc. are removed.
-## 🗃️ Databases
-
-    index.db: Available packages (after sync)
-
-    installed.db: Packages currently installed
-
-# ⚠️ Restrictions & Notes
-
-    Linux only (//go:build linux)
-
-    Root permissions required for most commands
-
-    Changing dataDir triggers prompt to migrate installed packages
-
-    Binaries in binDir are not automatically moved if path changes
-
-    Do not manually edit lastDataDir
-
-
-# TODO
-
-- Auto upgrade all packages available
-- Packets Universe

cmd/http/httpsocket.go

@@ -1,37 +0,0 @@
-package main
-
-import (
-	"fmt"
-	"log"
-	"net/http"
-	"os"
-	"path/filepath"
-
-	"packets/internal"
-
-	"github.com/BurntSushi/toml"
-)
-
-type ConfigTOML struct {
-	Config struct {
-		DefaultHttpPort int    `toml:"httpPort"`
-		DefaultCacheDir string `toml:"cacheDir"`
-	} `toml:"Config"`
-}
-
-func main() {
-
-	internal.PacketsPackageDir()
-	var cfg ConfigTOML
-	toml.Decode(filepath.Join(internal.PacketsPackageDir(), "config.toml"), &cfg)
-
-	pid := os.Getpid()
-	if err := os.WriteFile(filepath.Join(internal.PacketsPackageDir(), "http.pid"), []byte(fmt.Sprint(pid)), 0644); err != nil {
-		fmt.Println("error saving subprocess pid", err)
-	}
-
-	fs := http.FileServer(http.Dir(cfg.Config.DefaultCacheDir))
-	http.Handle("/", fs)
-
-	log.Fatal(http.ListenAndServe(fmt.Sprintf(":%d", cfg.Config.DefaultHttpPort), nil))
-}

cmd/udp/udpsocket.go

@@ -1,65 +0,0 @@
-package main
-
-import (
-	"fmt"
-	"log"
-	"net"
-	"os"
-	"packets/internal"
-	"path/filepath"
-	"strings"
-
-	"github.com/BurntSushi/toml"
-)
-
-type ConfigTOML struct {
-	Config struct {
-		HttpPort int    `toml:"httpPort"`
-		CacheDir string `toml:"cacheDir"`
-	} `toml:"Config"`
-}
-
-var cfg ConfigTOML
-
-func CheckDownloaded(filename string) bool {
-
-	_, err := os.Stat(filepath.Join(cfg.Config.CacheDir))
-	if os.IsNotExist(err) {
-		return false
-	} else {
-		return true
-	}
-
-}
-
-func main() {
-	pid := os.Getpid()
-	if err := os.WriteFile(filepath.Join(internal.PacketsPackageDir(), "udp.pid"), []byte(fmt.Sprint(pid)), 0644); err != nil {
-		fmt.Println("error saving subprocess pid", err)
-	}
-	toml.Decode(filepath.Join(internal.PacketsPackageDir(), "config.toml"), &cfg)
-
-	addr := net.UDPAddr{IP: net.IPv4zero, Port: 1333}
-	conn, err := net.ListenUDP("udp", &addr)
-	if err != nil {
-		log.Fatal(err)
-	}
-	defer conn.Close()
-	buf := make([]byte, 1500)
-
-	for {
-		n, remote, err := conn.ReadFromUDP(buf)
-		if err != nil {
-			log.Println("error creating udp socket", err)
-		}
-		msg := string(buf[:n])
-		if !strings.HasPrefix(msg, "Q:") {
-			continue
-		}
-		filename := strings.TrimPrefix(msg, "Q:")
-		if CheckDownloaded(filename) {
-			reply := fmt.Sprintf("H:%s:%d", filename, cfg.Config.HttpPort)
-			conn.WriteToUDP([]byte(reply), remote)
-		}
-	}
-}

go.mod

@@ -1,31 +0,0 @@
-module packets
-
-go 1.24.4
-
-require (
-	github.com/BurntSushi/toml v1.5.0
-	github.com/klauspost/compress v1.18.0
-	github.com/schollz/progressbar/v3 v3.18.0
-	github.com/spf13/cobra v1.9.1
-	github.com/yuin/gopher-lua v1.1.1
-	golang.org/x/net v0.41.0
-	modernc.org/sqlite v1.38.0
-)
-
-require (
-	github.com/dustin/go-humanize v1.0.1 // indirect
-	github.com/google/uuid v1.6.0 // indirect
-	github.com/inconshreveable/mousetrap v1.1.0 // indirect
-	github.com/mattn/go-isatty v0.0.20 // indirect
-	github.com/mitchellh/colorstring v0.0.0-20190213212951-d06e56a500db // indirect
-	github.com/ncruces/go-strftime v0.1.9 // indirect
-	github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec // indirect
-	github.com/rivo/uniseg v0.4.7 // indirect
-	github.com/spf13/pflag v1.0.7 // indirect
-	golang.org/x/exp v0.0.0-20250408133849-7e4ce0ab07d0 // indirect
-	golang.org/x/sys v0.33.0 // indirect
-	golang.org/x/term v0.32.0 // indirect
-	modernc.org/libc v1.65.10 // indirect
-	modernc.org/mathutil v1.7.1 // indirect
-	modernc.org/memory v1.11.0 // indirect
-)

go.sum

@@ -1,85 +0,0 @@
-github.com/BurntSushi/toml v1.5.0 h1:W5quZX/G/csjUnuI8SUYlsHs9M38FC7znL0lIO+DvMg=
-github.com/BurntSushi/toml v1.5.0/go.mod h1:ukJfTF/6rtPPRCnwkur4qwRxa8vTRFBF0uk2lLoLwho=
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-github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
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-github.com/mitchellh/colorstring v0.0.0-20190213212951-d06e56a500db/go.mod h1:l0dey0ia/Uv7NcFFVbCLtqEBQbrT4OCwCSKTEv6enCw=
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-modernc.org/sortutil v1.2.1/go.mod h1:7ZI3a3REbai7gzCLcotuw9AC4VZVpYMjDzETGsSMqJE=
-modernc.org/sqlite v1.38.0 h1:+4OrfPQ8pxHKuWG4md1JpR/EYAh3Md7TdejuuzE7EUI=
-modernc.org/sqlite v1.38.0/go.mod h1:1Bj+yES4SVvBZ4cBOpVZ6QgesMCKpJZDq0nxYzOpmNE=
-modernc.org/strutil v1.2.1 h1:UneZBkQA+DX2Rp35KcM69cSsNES9ly8mQWD71HKlOA0=
-modernc.org/strutil v1.2.1/go.mod h1:EHkiggD70koQxjVdSBM3JKM7k6L0FbGE5eymy9i3B9A=
-modernc.org/token v1.1.0 h1:Xl7Ap9dKaEs5kLoOQeQmPWevfnk/DM5qcLcYlA8ys6Y=
-modernc.org/token v1.1.0/go.mod h1:UGzOrNV1mAFSEB63lOFHIpNRUVMvYTc6yu1SMY/XTDM=

internal/internal.go

@@ -1,552 +0,0 @@
-package internal
-
-import (
-	"archive/tar"
-	"fmt"
-	"io"
-	"io/fs"
-	"log"
-	"os"
-	"os/exec"
-	"path/filepath"
-	"strings"
-
-	"github.com/BurntSushi/toml"
-	"github.com/klauspost/compress/zstd"
-	lua "github.com/yuin/gopher-lua"
-)
-
-var AllowedCmds = map[string]string{
-	"go":          "go",          // "Go code compiler"
-	"gcc":         "gcc",         // "C"
-	"g++":         "g++",         // "C++"
-	"rustc":       "rustc",       // "Rust"
-	"javac":       "javac",       // "Java"
-	"luac":        "luac",        // "Lua"
-	"pyinstaller": "pyinstaller", // "Python"
-	"kotlinc":     "kotlinc",     // "Kotlin"
-	"mcs":         "mcs",         // "C# compiler"
-	"swiftc":      "swiftc",      // "Swift compiler"
-	"ts":          "tsc",         // "TypeScript compiler"
-	"ruby":        "rubyc",       // "Ruby compiler"
-}
-
-type ConfigTOML struct {
-	Config struct {
-		HttpPort           int    `toml:"httpPort"`
-		CacheDir           string `toml:"cacheDir"`
-		AutoDeleteCacheDir bool   `toml:"dayToDeleteCacheDir"`
-		DaysToDelete       int    `toml:"daysToDelete"`
-		DataDir            string `toml:"dataDir"`
-		BinDir             string `toml:"binDir"`
-		LastDataDir        string `toml:"lastDataDir"`
-	} `toml:"Config"`
-}
-
-type Manifest struct {
-	Info struct {
-		Name         string   `toml:"name"`
-		Version      string   `toml:"version"`
-		Description  string   `toml:"description"`
-		Dependencies []string `toml:"dependencies"`
-		Author       string   `toml:"author"`
-		Family       string   `toml:"family"`
-		Serial       uint     `toml:"serial"`
-	} `toml:"Info"`
-	Hooks struct {
-		Install string `toml:"install"`
-		Remove  string `toml:"remove"`
-	} `toml:"Hooks"`
-}
-
-var SandboxDir string
-
-func PacketsPackageDir() string {
-
-	out, _ := exec.Command("uname", "-s").Output()
-
-	if uname := strings.TrimSpace(string(out)); uname == "J2ME" {
-
-		_, err := os.Stat("packets.help")
-		if os.IsNotExist(err) {
-			err = nil
-
-			var thedirectory string
-			err := filepath.WalkDir("/mnt", func(path string, d fs.DirEntry, err error) error {
-				if d.IsDir() {
-
-					thedirectory = filepath.Join(path, "packets")
-					if err := os.Mkdir(thedirectory, 0644); err != nil {
-						return err
-					}
-					if err := os.WriteFile("packets.help", []byte(thedirectory), 0644); err != nil {
-						return err
-					}
-					if err := os.Mkdir(filepath.Join(filepath.Join(thedirectory, "cache")), 0644); err != nil {
-						return err
-					}
-					if err := os.Mkdir(filepath.Join(filepath.Join(thedirectory, "packages")), 0644); err != nil {
-						return err
-					}
-					if err := os.Mkdir(filepath.Join(filepath.Join(thedirectory, "bin")), 0644); err != nil {
-						return err
-					}
-					return nil
-				}
-				return nil
-			})
-			if err != nil {
-				log.Fatal(err)
-			}
-			return thedirectory
-		}
-
-		byt, err := os.ReadFile("packets.help")
-		if err != nil {
-			log.Fatal(err)
-		}
-
-		return string(byt)
-
-	} else {
-		return "/etc/packets"
-	}
-}
-
-func ManifestReadXZ(path string) (*Manifest, error) {
-	f, err := os.Open(path)
-	if err != nil {
-		return nil, err
-	}
-	defer f.Close()
-
-	zr, err := zstd.NewReader(f)
-	if err != nil {
-		return nil, err
-	}
-	defer zr.Close()
-
-	tarReader := tar.NewReader(zr)
-
-	for {
-		header, err := tarReader.Next()
-		if err == io.EOF {
-			break
-		}
-		if err != nil {
-			return nil, err
-		}
-
-		if filepath.Base(header.Name) == "manifest.toml" {
-			decoder := toml.NewDecoder(tarReader)
-
-			var manifest Manifest
-
-			if _, err := decoder.Decode(&manifest); err != nil {
-				log.Fatal(err)
-			}
-
-			return &manifest, nil
-		}
-
-	}
-	return nil, fmt.Errorf("can't find manifest.toml")
-}
-
-func DefaultConfigTOML() *ConfigTOML {
-
-	var cfg ConfigTOML
-	out, _ := exec.Command("uname", "-s").Output()
-
-	if uname := strings.TrimSpace(string(out)); uname == "J2ME" {
-		cfg.Config.HttpPort = 9123
-		cfg.Config.AutoDeleteCacheDir = false
-		cfg.Config.CacheDir = filepath.Join(PacketsPackageDir(), "cache")
-		cfg.Config.DataDir = filepath.Join(PacketsPackageDir(), "data")
-		cfg.Config.DaysToDelete = -1
-		cfg.Config.BinDir = filepath.Join(PacketsPackageDir(), "bin")
-		cfg.Config.LastDataDir = filepath.Join(PacketsPackageDir(), "data")
-		return &cfg
-	} else {
-
-		cfg.Config.HttpPort = 9123
-		cfg.Config.AutoDeleteCacheDir = false
-		cfg.Config.CacheDir = "/var/cache/packets"
-		cfg.Config.DataDir = "/opt/packets"
-		cfg.Config.DaysToDelete = -1
-		cfg.Config.BinDir = "/usr/bin"
-		cfg.Config.LastDataDir = "/opt/packets"
-
-		return &cfg
-	}
-
-}
-
-func IsSafe(str string) bool {
-	s, err := filepath.EvalSymlinks(filepath.Clean(str))
-	if err != nil {
-		s = filepath.Clean(str)
-	}
-
-	var cfg ConfigTOML
-	toml.DecodeFile(filepath.Join(PacketsPackageDir(), "config.toml"), &cfg)
-
-	if strings.HasPrefix(s, cfg.Config.DataDir) || strings.HasPrefix(s, cfg.Config.BinDir) {
-		return true
-
-	} else if strings.Contains(s, ".ssh") {
-		return false
-
-	} else if strings.HasPrefix(s, "/etc") {
-		return false
-
-	} else if strings.HasPrefix(s, "/usr") || strings.HasPrefix(s, "/bin") {
-		fmt.Println(s, "está dentro de usr")
-		return strings.HasPrefix(s, "/usr/share")
-
-	} else if strings.HasPrefix(s, "/var/mail") {
-		return false
-
-	} else if strings.HasPrefix(s, "/proc") {
-		return false
-
-	} else if strings.HasPrefix(s, "/sys") {
-		return false
-
-	} else if strings.HasPrefix(s, "/var/run") || strings.HasPrefix(s, "/run") {
-		return false
-
-	} else if strings.HasPrefix(s, "/tmp") {
-		return false
-
-	} else if strings.HasPrefix(s, "/dev") {
-		return false
-
-	} else if strings.HasPrefix(s, "/boot") {
-		return false
-
-	} else if strings.HasPrefix(s, "/home") {
-		if strings.Contains(s, "/Pictures") || strings.Contains(s, "/Videos") || strings.Contains(s, "/Documents") || strings.Contains(s, "/Downloads") {
-			return false
-		}
-
-	} else if strings.HasPrefix(s, "/lib") || strings.HasPrefix(s, "/lib64") || strings.HasPrefix(s, "/var/lib64") || strings.HasPrefix(s, "/lib") {
-		return false
-
-	} else if strings.HasPrefix(s, "/sbin") {
-		return false
-
-	} else if strings.HasPrefix(s, "/srv") {
-		return false
-
-	} else if strings.HasPrefix(s, "/mnt") {
-		return false
-
-	} else if strings.HasPrefix(s, "/media") {
-		return false
-	} else if strings.HasPrefix(s, "/snap") {
-		return false
-	}
-
-	return true
-}
-
-func SafeRemove(L *lua.LState) int {
-	filename := L.CheckString(1)
-	if !IsSafe(filename) {
-		L.Push(lua.LFalse)
-		L.Push(lua.LString("[packets] unsafe filepath"))
-		return 2
-	}
-	err := os.RemoveAll(filename)
-	if err != nil {
-		L.Push(lua.LFalse)
-		L.Push(lua.LString("[packets] remove failed\n" + err.Error()))
-		return 2
-	}
-	L.Push(lua.LTrue)
-	L.Push(lua.LNil)
-	return 2
-}
-
-func SafeRename(L *lua.LState) int {
-	oldname := L.CheckString(1)
-	newname := L.CheckString(2)
-
-	if !IsSafe(oldname) || !IsSafe(newname) {
-		L.Push(lua.LFalse)
-		L.Push(lua.LString("[packets] unsafe filepath"))
-		return 2
-	}
-
-	if err := os.Rename(oldname, newname); err != nil {
-		L.Push(lua.LFalse)
-		L.Push(lua.LString("[packets] rename failed\n" + err.Error()))
-		return 2
-	}
-
-	L.Push(lua.LTrue)
-	return 1
-}
-func SafeCopy(L *lua.LState) int {
-	oldname := L.CheckString(1)
-	newname := L.CheckString(2)
-
-	if !IsSafe(oldname) || !IsSafe(newname) {
-		L.Push(lua.LFalse)
-		L.Push(lua.LString("[packets] unsafe filepath"))
-		return 2
-	}
-
-	src, err := os.Open(oldname)
-	if err != nil {
-		L.Push(lua.LFalse)
-		L.Push(lua.LString("[packets] copy failed\n" + err.Error()))
-		return 2
-
-	}
-	defer src.Close()
-
-	status, err := src.Stat()
-	if err != nil {
-		L.Push(lua.LFalse)
-		L.Push(lua.LString("[packets] copy failed\n" + err.Error()))
-		return 2
-	}
-
-	err = os.MkdirAll(filepath.Dir(newname), 0755)
-	if err != nil {
-		L.Push(lua.LFalse)
-		L.Push(lua.LString("[packets] copy failed\n" + err.Error()))
-		return 2
-	}
-
-	dst, err := os.Create(newname)
-	if err != nil {
-		if !os.IsExist(err) {
-			dst, err = os.Open(newname)
-			if err != nil {
-				L.Push(lua.LFalse)
-				L.Push(lua.LString("[packets] copy failed\n" + err.Error()))
-				return 2
-			}
-		} else {
-			L.Push(lua.LFalse)
-			L.Push(lua.LString("[packets] copy failed\n" + err.Error()))
-			return 2
-		}
-	}
-
-	defer dst.Close()
-	if err := dst.Chmod(status.Mode()); err != nil {
-		L.Push(lua.LFalse)
-		L.Push(lua.LString("[packets] copy failed\n" + err.Error()))
-		return 2
-	}
-
-	_, err = io.Copy(dst, src)
-	if err != nil {
-		L.Push(lua.LFalse)
-		L.Push(lua.LString("[packets] copy failed\n" + err.Error()))
-		return 2
-	}
-
-	L.Push(lua.LTrue)
-	L.Push(lua.LNil)
-	return 2
-}
-
-func SymbolicLua(L *lua.LState) int {
-	fileName := L.CheckString(1)
-	destination := L.CheckString(2)
-
-	if !IsSafe(fileName) || !IsSafe(destination) {
-		L.Push(lua.LFalse)
-		L.Push(lua.LString("[packets] unsafe filepath"))
-		return 2
-	}
-
-	_ = os.RemoveAll(destination)
-	if err := os.Symlink(fileName, destination); err != nil {
-		L.Push(lua.LFalse)
-		L.Push(lua.LString("[packets] symlink failed\n" + err.Error()))
-		return 2
-	}
-
-	L.Push(lua.LTrue)
-	L.Push(lua.LNil)
-	return 2
-}
-
-func modeFlags(mode string) int {
-	switch mode {
-	case "r", "rb":
-		return os.O_RDONLY
-	case "w", "wb":
-		return os.O_CREATE | os.O_WRONLY | os.O_TRUNC
-	case "a", "ab":
-		return os.O_CREATE | os.O_WRONLY | os.O_APPEND
-	case "r+", "r+b", "rb+", "br+":
-		return os.O_RDWR
-	case "w+", "w+b", "wb+", "bw+":
-		return os.O_CREATE | os.O_RDWR | os.O_TRUNC
-	case "a+", "a+b", "ab+", "ba+":
-		return os.O_CREATE | os.O_RDWR | os.O_APPEND
-	default:
-		return os.O_RDONLY
-	}
-}
-
-func SafeOpen(L *lua.LState) int {
-	path := L.CheckString(1)
-	mode := L.OptString(2, "r")
-
-	if !IsSafe(path) {
-		L.Push(lua.LNil)
-		L.Push(lua.LString("[packets] unsafe filepath"))
-		return 2
-	}
-	file, err := os.OpenFile(path, modeFlags(mode), 0644)
-	if err != nil {
-		L.Push(lua.LNil)
-		L.Push(lua.LString("[packets] open failed\n" + err.Error()))
-		return 2
-	}
-
-	ud := L.NewUserData()
-	ud.Value = file
-	L.SetMetatable(ud, L.GetTypeMetatable("file"))
-	L.Push(ud)
-	L.Push(lua.LNil)
-	return 2
-}
-
-func Ljoin(L *lua.LState) int {
-
-	n := L.GetTop()
-	parts := make([]string, 0, n)
-
-	for i := 1; i <= n; i++ {
-		val := L.Get(i)
-		parts = append(parts, val.String())
-	}
-
-	result := filepath.Join(parts...)
-	L.Push(lua.LString(result))
-	return 1
-}
-
-func LMkdir(L *lua.LState) int {
-	path := L.CheckString(1)
-	perm := L.CheckInt(2)
-
-	if !IsSafe(path) {
-		L.Push(lua.LFalse)
-		L.Push(lua.LString("[packets] unsafe filepath\n"))
-	}
-
-	if err := os.MkdirAll(path, os.FileMode(perm)); err != nil {
-		L.Push(lua.LFalse)
-		L.Push(lua.LString("[packets] mkdir failed\n" + err.Error()))
-	}
-
-	L.Push(lua.LTrue)
-	L.Push(lua.LNil)
-	return 2
-}
-
-func LuaCompile(L *lua.LState) int {
-	lang := L.CheckString(1)
-	args := []string{}
-	for i := 2; i <= L.GetTop(); i++ {
-
-		if strings.Contains(L.CheckString(i), "/") {
-
-			tryintoacess, err := filepath.Abs(filepath.Clean(L.CheckString(i)))
-			if err != nil {
-				L.Push(lua.LFalse)
-				L.Push(lua.LString("[packets] invalid filepath\n" + err.Error()))
-				return 2
-			}
-			if !strings.HasPrefix(tryintoacess, SandboxDir) {
-				L.Push(lua.LFalse)
-				L.Push(lua.LString("[packets] unsafe filepath"))
-				return 2
-			}
-		}
-
-		args = append(args, L.CheckString(i))
-	}
-
-	bin, suc := AllowedCmds[lang]
-	if !suc {
-		L.Push(lua.LFalse)
-		L.Push(lua.LString("[packets] unsupported language"))
-		return 2
-	}
-
-	cmd := exec.Command(bin, args...)
-	cmd.Dir = SandboxDir
-	out, err := cmd.CombinedOutput()
-	if err != nil {
-		L.Push(lua.LFalse)
-		L.Push(lua.LString("[packets] compile failed\n" + err.Error() + "\n" + string(out)))
-		return 2
-	}
-	if err := cmd.Run(); err != nil {
-		L.Push(lua.LFalse)
-		L.Push(lua.LString("[packets] compile failed\n" + err.Error()))
-		return 2
-	}
-
-	L.Push(lua.LTrue)
-	L.Push(lua.LString(string(out)))
-	return 2
-}
-
-func CompileRequirements(L *lua.LState) int {
-
-	cmdLang := L.CheckString(1)
-
-	if strings.Contains(L.CheckString(2), "/") {
-
-		tryintoacess, err := filepath.Abs(filepath.Clean(L.CheckString(2)))
-		if err != nil {
-			L.Push(lua.LFalse)
-			L.Push(lua.LString("[packets] invalid filepath\n" + err.Error()))
-			return 2
-		}
-		if !strings.HasPrefix(tryintoacess, SandboxDir) {
-			L.Push(lua.LFalse)
-			L.Push(lua.LString("[packets] unsafe filepath"))
-			return 2
-		}
-	}
-
-	var err error
-
-	switch cmdLang {
-	case "python":
-		cmd := exec.Command("pip", "install", "--target", filepath.Join(SandboxDir, "tmp/build"), "-r", L.CheckString(2))
-		cmd.Dir = filepath.Join(SandboxDir, "data")
-		err = cmd.Run()
-	case "java":
-		cmd := exec.Command("mvn", "dependency:copy-dependencies", "-DoutputDirectory="+filepath.Join(SandboxDir, "tmp/build"))
-		cmd.Dir = L.CheckString(2)
-		err = cmd.Run()
-	case "ruby":
-		cmd := exec.Command("bundle", "install", "--path", filepath.Join(SandboxDir, "tmp/build"))
-		cmd.Dir = L.CheckString(2)
-		err = cmd.Run()
-	}
-
-	if err != nil {
-		L.Push(lua.LFalse)
-		L.Push(lua.LString("[packets] requirements install failed\n" + err.Error()))
-		return 2
-	}
-
-	L.Push(lua.LTrue)
-	L.Push(lua.LNil)
-	return 2
-}