removing images

This reverts commit 2cfe78721a.

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/httpsocket/main.go

@@ -0,0 +1,36 @@
+package main
+
+import (
+	"fmt"
+	"log"
+	"net/http"
+	"os"
+	"packets/configs"
+	"packets/internal/consts"
+	"path/filepath"
+)
+
+type ConfigTOML struct {
+	Config struct {
+		DefaultHttpPort int    `toml:"httpPort"`
+		DefaultCacheDir string `toml:"cacheDir"`
+	} `toml:"Config"`
+}
+
+func main() {
+
+	cfg, err := configs.GetConfigTOML()
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	pid := os.Getpid()
+	if err := os.WriteFile(filepath.Join(consts.DefaultLinux_d, "http.pid"), []byte(fmt.Sprint(pid)), 0664); err != nil {
+		fmt.Println("error saving subprocess pid", err)
+	}
+
+	fs := http.FileServer(http.Dir(cfg.Config.Cache_d))
+	http.Handle("/", fs)
+
+	log.Fatal(http.ListenAndServe(fmt.Sprintf(":%d", cfg.Config.HttpPort), nil))
+}

cmd/udpsocket/main.go

@@ -5,39 +5,32 @@ import (
 	"log"
 	"net"
 	"os"
-	"packets/internal"
+	"packets/configs"
+	"packets/internal/consts"
 	"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))
+	cfg, err := configs.GetConfigTOML()
-	if os.IsNotExist(err) {
+	if err != nil {
-		return false
+		log.Fatal(err)
-	} else {
-		return true
 	}
 
+	_, err = os.Stat(filepath.Join(cfg.Config.Cache_d, filename))
+	return err == nil
 }
 
 func main() {
 	pid := os.Getpid()
-	if err := os.WriteFile(filepath.Join(internal.PacketsPackageDir(), "udp.pid"), []byte(fmt.Sprint(pid)), 0644); err != nil {
+	if err := os.WriteFile(filepath.Join(consts.DefaultLinux_d, "udp.pid"), []byte(fmt.Sprint(pid)), 0664); err != nil {
 		fmt.Println("error saving subprocess pid", err)
 	}
-	toml.Decode(filepath.Join(internal.PacketsPackageDir(), "config.toml"), &cfg)
+	cfg, err := configs.GetConfigTOML()
+	if err != nil {
+		log.Fatal(err)
+	}
 
 	addr := net.UDPAddr{IP: net.IPv4zero, Port: 1333}
 	conn, err := net.ListenUDP("udp", &addr)

configs/main.go

@@ -0,0 +1,60 @@
+package configs
+
+import (
+	"os"
+	"packets/internal/consts"
+	"path/filepath"
+
+	"github.com/pelletier/go-toml/v2"
+)
+
+// DefaultConfigTOML returns configTOML struct with all default values and create all directorys
+func DefaultConfigTOML() (*ConfigTOML, error) {
+
+	var config ConfigTOML
+
+	_, err := os.Stat(consts.DefaultCache_d)
+	if err != nil {
+		if os.IsNotExist(err) {
+			err := os.MkdirAll(consts.DefaultCache_d, 0666)
+			if err != nil {
+				return nil, err
+			}
+		}
+	}
+
+	_, err = os.Stat(consts.DefaultCache_d)
+	if err != nil {
+		if os.IsNotExist(err) {
+			err := os.MkdirAll(consts.DefaultData_d, 0644)
+			if err != nil {
+				return nil, err
+			}
+		}
+	}
+
+	config.Config.Cache_d = consts.DefaultCache_d
+	config.Config.Data_d = consts.DefaultData_d
+	config.Config.HttpPort = consts.DefaultHttpPort
+	config.Config.Bin_d = consts.DefaultBin_d
+	config.Config.StorePackages = true
+
+	return &config, nil
+}
+
+// GetConfigTOML return settings values
+func GetConfigTOML() (*ConfigTOML, error) {
+	f, err := os.Open(filepath.Join(consts.DefaultLinux_d, "config.toml"))
+	if err != nil {
+		return nil, err
+	}
+
+	decoder := toml.NewDecoder(f)
+
+	var config ConfigTOML
+	if err := decoder.Decode(&config); err != nil {
+		return nil, err
+	}
+
+	return &config, nil
+}

configs/structs.go

@@ -0,0 +1,26 @@
+package configs
+
+type Manifest struct {
+	Info struct {
+		Name         string            `toml:"name"`
+		Id           string            `toml:"id"`
+		Version      string            `toml:"version"`
+		Description  string            `toml:"description"`
+		Dependencies map[string]string `toml:"dependencies"`
+		Author       string            `toml:"author"`
+	} `toml:"Info"`
+	Hooks struct {
+		Install string `toml:"install"`
+		Remove  string `toml:"remove"`
+	} `toml:"Hooks"`
+}
+
+type ConfigTOML struct {
+	Config struct {
+		HttpPort      int    `toml:"httpPort"`
+		Cache_d       string `toml:"cache_d"`
+		Data_d        string `toml:"data_d"`
+		Bin_d         string `toml:"bin_d"`
+		StorePackages bool   `toml:"store_packages"`
+	} `toml:"Config"`
+}

doc/indexdbSchema.txt

@@ -0,0 +1,47 @@
+CREATE TABLE packages (
+    id              TEXT NOT NULL UNIQUE PRIMARY KEY,
+    query_name      TEXT NOT NULL,
+    version         TEXT NOT NULL,
+    serial          INTEGER NOT NULL,
+    description     TEXT NOT NULL,
+    image_url       TEXT NOT NULL,
+    package_url     TEXT NOT NULL,
+    public_key      BLOB NOT NULL,
+    signature       BLOB NOT NULL,
+    author          TEXT NOT NULL,
+    author_verified INTEGER NOT NULL DEFAULT 0,
+    arch            TEXT NOT NULL,
+    os              TEXT NOT NULL,
+    size            INTEGER NOT NULL DEFAULT 0,
+
+    UNIQUE(query_name, version),
+    UNIQUE(query_name, serial)
+);
+
+CREATE TABLE package_dependencies(
+    package_id TEXT NOT NULL,
+    dependency_name TEXT NOT NULL,
+    version_constraint TEXT NOT NULL,
+
+    PRIMARY KEY (package_id, dependency_name)
+);
+
+CREATE INDEX index_dependency_name ON package_dependencies(dependency_name);
+
+
+CREATE TABLE IF NOT EXISTS packages (
+    query_name      TEXT NOT NULL UNIQUE PRIMARY KEY,
+    id              TEXT NOT NULL UNIQUE, 
+    version         TEXT NOT NULL, 
+    dependencies    TEXT NOT NULL DEFAULT '', 
+    description     TEXT NOT NULL,
+    package_d       TEXT NOT NULL,
+    filename        TEXT NOT NULL,
+    os              TEXT NOT NULL,
+    arch            TEXT NOT NULL,
+    in_cache        INTEGER NOT NULL DEFAULT 1,
+    serial          INTEGER NOT NULL,
+
+    UNIQUE(query_name, version),
+    UNIQUE(query_name, serial)
+);

go.mod

@@ -1,31 +1,55 @@
 module packets
 
-go 1.24.4
+go 1.25.1
 
 require (
-	github.com/BurntSushi/toml v1.5.0
+	github.com/gin-gonic/gin v1.11.0
 	github.com/klauspost/compress v1.18.0
-	github.com/schollz/progressbar/v3 v3.18.0
+	github.com/pelletier/go-toml/v2 v2.2.4
-	github.com/spf13/cobra v1.9.1
+	github.com/spf13/cobra v1.10.1
 	github.com/yuin/gopher-lua v1.1.1
-	golang.org/x/net v0.41.0
+	golang.org/x/net v0.44.0
-	modernc.org/sqlite v1.38.0
+	modernc.org/sqlite v1.38.2
 )
 
 require (
+	github.com/bytedance/sonic v1.14.0 // indirect
+	github.com/bytedance/sonic/loader v0.3.0 // indirect
+	github.com/cloudwego/base64x v0.1.6 // indirect
 	github.com/dustin/go-humanize v1.0.1 // indirect
+	github.com/gabriel-vasile/mimetype v1.4.8 // indirect
+	github.com/gin-contrib/sse v1.1.0 // indirect
+	github.com/go-playground/locales v0.14.1 // indirect
+	github.com/go-playground/universal-translator v0.18.1 // indirect
+	github.com/go-playground/validator/v10 v10.27.0 // indirect
+	github.com/goccy/go-json v0.10.2 // indirect
+	github.com/goccy/go-yaml v1.18.0 // indirect
 	github.com/google/uuid v1.6.0 // indirect
 	github.com/inconshreveable/mousetrap v1.1.0 // indirect
+	github.com/json-iterator/go v1.1.12 // indirect
+	github.com/klauspost/cpuid/v2 v2.3.0 // indirect
+	github.com/leodido/go-urn v1.4.0 // indirect
 	github.com/mattn/go-isatty v0.0.20 // indirect
-	github.com/mitchellh/colorstring v0.0.0-20190213212951-d06e56a500db // indirect
+	github.com/modern-go/concurrent v0.0.0-20180228061459-e0a39a4cb421 // indirect
+	github.com/modern-go/reflect2 v1.0.2 // indirect
 	github.com/ncruces/go-strftime v0.1.9 // indirect
+	github.com/quic-go/qpack v0.5.1 // indirect
+	github.com/quic-go/quic-go v0.54.0 // indirect
 	github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec // indirect
-	github.com/rivo/uniseg v0.4.7 // indirect
+	github.com/spf13/pflag v1.0.10 // indirect
-	github.com/spf13/pflag v1.0.7 // indirect
+	github.com/twitchyliquid64/golang-asm v0.15.1 // indirect
-	golang.org/x/exp v0.0.0-20250408133849-7e4ce0ab07d0 // indirect
+	github.com/ugorji/go/codec v1.3.0 // indirect
-	golang.org/x/sys v0.33.0 // indirect
+	go.uber.org/mock v0.5.0 // indirect
-	golang.org/x/term v0.32.0 // indirect
+	golang.org/x/arch v0.20.0 // indirect
-	modernc.org/libc v1.65.10 // indirect
+	golang.org/x/crypto v0.42.0 // indirect
+	golang.org/x/exp v0.0.0-20250620022241-b7579e27df2b // indirect
+	golang.org/x/mod v0.27.0 // indirect
+	golang.org/x/sync v0.17.0 // indirect
+	golang.org/x/sys v0.36.0 // indirect
+	golang.org/x/text v0.29.0 // indirect
+	golang.org/x/tools v0.36.0 // indirect
+	google.golang.org/protobuf v1.36.9 // indirect
+	modernc.org/libc v1.66.3 // indirect
 	modernc.org/mathutil v1.7.1 // indirect
 	modernc.org/memory v1.11.0 // indirect
 )

go.sum

@@ -1,74 +1,128 @@
-github.com/BurntSushi/toml v1.5.0 h1:W5quZX/G/csjUnuI8SUYlsHs9M38FC7znL0lIO+DvMg=
+github.com/bytedance/sonic v1.14.0 h1:/OfKt8HFw0kh2rj8N0F6C/qPGRESq0BbaNZgcNXXzQQ=
-github.com/BurntSushi/toml v1.5.0/go.mod h1:ukJfTF/6rtPPRCnwkur4qwRxa8vTRFBF0uk2lLoLwho=
+github.com/bytedance/sonic v1.14.0/go.mod h1:WoEbx8WTcFJfzCe0hbmyTGrfjt8PzNEBdxlNUO24NhA=
-github.com/chengxilo/virtualterm v1.0.4 h1:Z6IpERbRVlfB8WkOmtbHiDbBANU7cimRIof7mk9/PwM=
+github.com/bytedance/sonic/loader v0.3.0 h1:dskwH8edlzNMctoruo8FPTJDF3vLtDT0sXZwvZJyqeA=
-github.com/chengxilo/virtualterm v1.0.4/go.mod h1:DyxxBZz/x1iqJjFxTFcr6/x+jSpqN0iwWCOK1q10rlY=
+github.com/bytedance/sonic/loader v0.3.0/go.mod h1:N8A3vUdtUebEY2/VQC0MyhYeKUFosQU6FxH2JmUe6VI=
+github.com/cloudwego/base64x v0.1.6 h1:t11wG9AECkCDk5fMSoxmufanudBtJ+/HemLstXDLI2M=
+github.com/cloudwego/base64x v0.1.6/go.mod h1:OFcloc187FXDaYHvrNIjxSe8ncn0OOM8gEHfghB2IPU=
 github.com/cpuguy83/go-md2man/v2 v2.0.6/go.mod h1:oOW0eioCTA6cOiMLiUPZOpcVxMig6NIQQ7OS05n1F4g=
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/dustin/go-humanize v1.0.1 h1:GzkhY7T5VNhEkwH0PVJgjz+fX1rhBrR7pRT3mDkpeCY=
 github.com/dustin/go-humanize v1.0.1/go.mod h1:Mu1zIs6XwVuF/gI1OepvI0qD18qycQx+mFykh5fBlto=
+github.com/gabriel-vasile/mimetype v1.4.8 h1:FfZ3gj38NjllZIeJAmMhr+qKL8Wu+nOoI3GqacKw1NM=
+github.com/gabriel-vasile/mimetype v1.4.8/go.mod h1:ByKUIKGjh1ODkGM1asKUbQZOLGrPjydw3hYPU2YU9t8=
+github.com/gin-contrib/sse v1.1.0 h1:n0w2GMuUpWDVp7qSpvze6fAu9iRxJY4Hmj6AmBOU05w=
+github.com/gin-contrib/sse v1.1.0/go.mod h1:hxRZ5gVpWMT7Z0B0gSNYqqsSCNIJMjzvm6fqCz9vjwM=
+github.com/gin-gonic/gin v1.11.0 h1:OW/6PLjyusp2PPXtyxKHU0RbX6I/l28FTdDlae5ueWk=
+github.com/gin-gonic/gin v1.11.0/go.mod h1:+iq/FyxlGzII0KHiBGjuNn4UNENUlKbGlNmc+W50Dls=
+github.com/go-playground/assert/v2 v2.2.0 h1:JvknZsQTYeFEAhQwI4qEt9cyV5ONwRHC+lYKSsYSR8s=
+github.com/go-playground/assert/v2 v2.2.0/go.mod h1:VDjEfimB/XKnb+ZQfWdccd7VUvScMdVu0Titje2rxJ4=
+github.com/go-playground/locales v0.14.1 h1:EWaQ/wswjilfKLTECiXz7Rh+3BjFhfDFKv/oXslEjJA=
+github.com/go-playground/locales v0.14.1/go.mod h1:hxrqLVvrK65+Rwrd5Fc6F2O76J/NuW9t0sjnWqG1slY=
+github.com/go-playground/universal-translator v0.18.1 h1:Bcnm0ZwsGyWbCzImXv+pAJnYK9S473LQFuzCbDbfSFY=
+github.com/go-playground/universal-translator v0.18.1/go.mod h1:xekY+UJKNuX9WP91TpwSH2VMlDf28Uj24BCp08ZFTUY=
+github.com/go-playground/validator/v10 v10.27.0 h1:w8+XrWVMhGkxOaaowyKH35gFydVHOvC0/uWoy2Fzwn4=
+github.com/go-playground/validator/v10 v10.27.0/go.mod h1:I5QpIEbmr8On7W0TktmJAumgzX4CA1XNl4ZmDuVHKKo=
+github.com/goccy/go-json v0.10.2 h1:CrxCmQqYDkv1z7lO7Wbh2HN93uovUHgrECaO5ZrCXAU=
+github.com/goccy/go-json v0.10.2/go.mod h1:6MelG93GURQebXPDq3khkgXZkazVtN9CRI+MGFi0w8I=
+github.com/goccy/go-yaml v1.18.0 h1:8W7wMFS12Pcas7KU+VVkaiCng+kG8QiFeFwzFb+rwuw=
+github.com/goccy/go-yaml v1.18.0/go.mod h1:XBurs7gK8ATbW4ZPGKgcbrY1Br56PdM69F7LkFRi1kA=
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+modernc.org/sqlite v1.38.2 h1:Aclu7+tgjgcQVShZqim41Bbw9Cho0y/7WzYptXqkEek=
-modernc.org/sqlite v1.38.0/go.mod h1:1Bj+yES4SVvBZ4cBOpVZ6QgesMCKpJZDq0nxYzOpmNE=
+modernc.org/sqlite v1.38.2/go.mod h1:cPTJYSlgg3Sfg046yBShXENNtPrWrDX8bsbAQBzgQ5E=
 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=

internal/consts/consts.go

@@ -0,0 +1,43 @@
+package consts
+
+import "time"
+
+const (
+	DefaultLinux_d  = "/etc/packets"
+	DefaultCache_d  = "/var/cache/packets"
+	DefaultHttpPort = 9123
+	DefaultBin_d    = "/usr/local/bin"
+	DefaultData_d   = "/opt/packets"
+	LANDeadline     = 2 * time.Second
+	IndexDB         = "/etc/packets/index.db"
+	InstalledDB     = "/etc/packets/installed.db"
+	DefaultSyncUrl  = "https://servidordomal.fun/index.db"
+)
+
+const InstalledDatabaseSchema = `CREATE TABLE IF NOT EXISTS packages (
+    query_name      TEXT NOT NULL UNIQUE PRIMARY KEY,
+    id              TEXT NOT NULL UNIQUE, 
+    version         TEXT NOT NULL, 
+    dependencies    TEXT NOT NULL DEFAULT '', 
+    description     TEXT NOT NULL,
+    package_d       TEXT NOT NULL,
+    filename        TEXT NOT NULL,
+    os              TEXT NOT NULL,
+    arch            TEXT NOT NULL,
+    in_cache        INTEGER NOT NULL DEFAULT 1,
+    serial          INTEGER NOT NULL,
+
+    UNIQUE(query_name, version),
+    UNIQUE(query_name, serial)
+);
+
+CREATE TABLE package_dependencies(
+    package_id TEXT NOT NULL,
+    dependency_name TEXT NOT NULL,
+    version_constraint TEXT NOT NULL,
+
+    PRIMARY KEY (package_id, dependency_name)
+);
+
+CREATE INDEX index_dependency_name ON package_dependencies(dependency_name);
+`

internal/errors/errors.go

@@ -0,0 +1,9 @@
+package errors_packets
+
+import "errors"
+
+var (
+	ErrResponseNot200OK     = errors.New("the request is not 200, download failed")
+	ErrCantFindManifestTOML = errors.New("can't find manifest.toml when trying to read the packagefile")
+	ErrInvalidSignature     = errors.New("the signature is invalid")
+)

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
-}

internal/utils/lan.go

@@ -0,0 +1,80 @@
+package utils
+
+import (
+	"fmt"
+	"net"
+	"packets/internal/consts"
+	"strconv"
+	"strings"
+	"time"
+
+	"golang.org/x/net/ipv4"
+)
+
+type Peer struct {
+	IP   net.IP
+	Port int
+}
+
+func BroadcastAddr(ip net.IP, mask net.IPMask) net.IP {
+	b := make(net.IP, len(ip))
+	for i := range ip {
+		b[i] = ip[i] | ^mask[i]
+	}
+	return b
+}
+
+func AskLAN(filename string) ([]Peer, error) {
+	var peers []Peer
+	query := []byte("Q:" + filename)
+
+	pc, err := net.ListenPacket("udp", ":0")
+	if err != nil {
+		return []Peer{}, err
+	}
+	defer pc.Close()
+
+	if pconn := ipv4.NewPacketConn(pc); pconn != nil {
+		_ = pconn.SetTTL(1)
+	}
+
+	ifaces, _ := net.Interfaces()
+	for _, ifc := range ifaces {
+		if ifc.Flags&net.FlagUp == 0 || ifc.Flags&net.FlagLoopback != 0 {
+			continue
+		}
+
+		addrs, _ := ifc.Addrs()
+		for _, a := range addrs {
+			ipnet, ok := a.(*net.IPNet)
+			if !ok || ipnet.IP.To4() == nil {
+				continue
+			}
+
+			bcast := BroadcastAddr(ipnet.IP.To4(), ipnet.Mask)
+			dst := &net.UDPAddr{IP: bcast, Port: 1333}
+
+			_, err = pc.WriteTo(query, dst)
+			if err != nil {
+				fmt.Printf(":: (%s) can't send to  %s: %s\n", ifc.Name, bcast, err.Error())
+			}
+		}
+	}
+	_ = pc.SetDeadline(time.Now().Add(consts.LANDeadline))
+	buf := make([]byte, 1500)
+
+	for {
+		n, addr, err := pc.ReadFrom(buf)
+		if err != nil {
+			break
+		}
+		msg := string(buf[:n])
+
+		if strings.HasPrefix(msg, "H:"+filename) {
+			parts := strings.Split(msg, ":")
+			port, _ := strconv.Atoi(parts[2])
+			peers = append(peers, Peer{IP: addr.(*net.UDPAddr).IP, Port: port})
+		}
+	}
+	return peers, nil
+}

internal/utils/lua/lua.go

@@ -0,0 +1,36 @@
+package utils_lua
+
+import (
+	"packets/configs"
+
+	lua "github.com/yuin/gopher-lua"
+)
+
+func GetSandBox() (lua.LState, error) {
+
+	cfg, err := configs.GetConfigTOML()
+	if err != nil {
+		return *lua.NewState(), err
+	}
+	L := lua.NewState()
+	osObject := L.GetGlobal("os").(*lua.LTable)
+
+	L.SetGlobal("SAFE_MODE", lua.LTrue)
+
+	L.SetGlobal("PACKETS_DATADIR", lua.LString(cfg.Config.Data_d))
+	L.SetGlobal("packets_bin_dir", lua.LString(cfg.Config.Bin_d))
+
+	L.SetGlobal("path_join", L.NewFunction(Ljoin))
+
+	// Packets build functions
+
+	osObject.RawSetString("remove", L.NewFunction(LSafeRemove))
+	osObject.RawSetString("rename", L.NewFunction(LSafeRename))
+	osObject.RawSetString("copy", L.NewFunction(LSafeCopy))
+	osObject.RawSetString("symlink", L.NewFunction(LSymlink))
+	osObject.RawSetString("mkdir", L.NewFunction(LMkdir))
+
+	//ioObject.RawSetString("open", L.NewFunction(LOpen))
+
+	return *L, nil
+}

internal/utils/lua/luafunctions.go

@@ -0,0 +1,260 @@
+package utils_lua
+
+import (
+	"fmt"
+	"log"
+	"os"
+	"packets/configs"
+	"packets/internal/consts"
+	"packets/internal/utils"
+	"path/filepath"
+	"strings"
+
+	"github.com/pelletier/go-toml/v2"
+	lua "github.com/yuin/gopher-lua"
+)
+
+func IsSafe(str string) bool {
+	s, err := filepath.EvalSymlinks(filepath.Clean(str))
+	if err != nil {
+		s = filepath.Clean(str)
+	}
+
+	var cfg configs.ConfigTOML
+
+	f, err := os.Open(filepath.Join(consts.DefaultLinux_d, "config.toml"))
+	if err != nil {
+		log.Println("error here opening config.toml")
+		return false
+	}
+
+	defer f.Close()
+
+	decoder := toml.NewDecoder(f)
+
+	if err := decoder.Decode(&cfg); err != nil {
+		log.Println("error decoding")
+		return false
+	}
+
+	if strings.HasPrefix(s, cfg.Config.Data_d) || strings.HasPrefix(s, cfg.Config.Bin_d) {
+		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
+}
+
+// lua functions
+
+func LSafeRemove(L *lua.LState) int {
+	filename := L.CheckString(1)
+	fmt.Printf("   remove %s\n", filename)
+
+	err := os.RemoveAll(filename)
+	if err != nil {
+		L.Push(lua.LFalse)
+		L.Push(lua.LString(err.Error()))
+		return 2
+	}
+	L.Push(lua.LTrue)
+	L.Push(lua.LNil)
+	return 2
+}
+
+func LSafeRename(L *lua.LState) int {
+	oldname := L.CheckString(1)
+	newname := L.CheckString(2)
+
+	fmt.Printf("   move %s -> %s\n", oldname, newname)
+
+	if err := os.Rename(oldname, newname); err != nil {
+		L.Push(lua.LFalse)
+		L.Push(lua.LString(err.Error()))
+		return 2
+	}
+
+	L.Push(lua.LTrue)
+	return 1
+}
+func LSafeCopy(L *lua.LState) int {
+	oldname := L.CheckString(1)
+	newname := L.CheckString(2)
+
+	fmt.Printf("   copy %s -> %s\n", oldname, newname)
+
+	if err := utils.CopyDir(oldname, newname); err != nil {
+		L.Push(lua.LFalse)
+		L.Push(lua.LString(err.Error()))
+		return 2
+	}
+
+	L.Push(lua.LTrue)
+	L.Push(lua.LNil)
+	return 2
+
+}
+
+func LSymlink(L *lua.LState) int {
+	fileName := L.CheckString(1)
+	destination := L.CheckString(2)
+
+	fmt.Printf("   symlink %s -> %s\n", fileName, destination)
+
+	_ = os.RemoveAll(destination)
+	if err := os.Symlink(fileName, destination); err != nil {
+		L.Push(lua.LFalse)
+		L.Push(lua.LString(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 LOpen(L *lua.LState) int {
+	path := L.CheckString(1)
+	mode := L.OptString(2, "r")
+
+	file, err := os.OpenFile(path, modeFlags(mode), 0644)
+	if err != nil {
+		L.Push(lua.LNil)
+		L.Push(lua.LString(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)
+	fmt.Printf("   mkdir %s \n", path)
+
+	/*
+		if !IsSafe(path) {
+			L.Push(lua.LFalse)
+			L.Push(lua.LString("unsafe filepath"))
+			return 2
+		}
+	*/
+
+	if err := os.MkdirAll(path, os.FileMode(perm)); err != nil {
+		L.Push(lua.LFalse)
+		L.Push(lua.LString(err.Error()))
+		return 2
+	}
+
+	L.Push(lua.LTrue)
+	L.Push(lua.LNil)
+	return 2
+}
+
+func LError(L *lua.LState) int {
+	n := L.GetTop()
+	parts := make([]any, 0, n)
+
+	for i := 1; i <= n; i++ {
+		val := L.Get(i)
+		parts = append(parts, val.String())
+	}
+
+	Llogger().Panic(parts...)
+	return 0
+}
+
+func Llogger() *log.Logger { return log.New(os.Stderr, "   script error: ", 0) }

internal/utils/utils.go

@@ -0,0 +1,504 @@
+package utils
+
+import (
+	"archive/tar"
+	"bytes"
+	"crypto/ed25519"
+	"database/sql"
+	"fmt"
+	"io"
+	"log"
+	"net/http"
+	"os"
+	"os/exec"
+	"path"
+	"path/filepath"
+	"strconv"
+	"strings"
+	"syscall"
+
+	"packets/configs"
+	"packets/internal/consts"
+	errors_packets "packets/internal/errors"
+
+	"github.com/klauspost/compress/zstd"
+	"github.com/pelletier/go-toml/v2"
+)
+
+type Package struct {
+	PackageF       []byte
+	Version        string
+	ImageUrl       string
+	QueryName      string
+	Description    string
+	Author         string
+	AuthorVerified bool
+	OS             string
+	Arch           string
+	Filename       string
+	Size           int64
+	Dependencies   map[string]string
+
+	Signature []byte
+	PublicKey ed25519.PublicKey
+
+	Manifest configs.Manifest
+
+	Serial int
+}
+
+func GetFileHTTP(url string) ([]byte, error) {
+	resp, err := http.Get(url)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	if resp.StatusCode != http.StatusOK {
+		return nil, errors_packets.ErrResponseNot200OK
+	}
+
+	fileBytes, err := io.ReadAll(resp.Body)
+	if err != nil {
+		return nil, err
+	}
+
+	return fileBytes, nil
+}
+
+// ReadManifest is crucial to get package metadata it reads manifest.toml from a package file (tar.zst)
+func ReadManifest(file io.Reader) (configs.Manifest, error) {
+	zstdReader, err := zstd.NewReader(file)
+	if err != nil {
+		return configs.Manifest{}, err
+	}
+	defer zstdReader.Close()
+
+	tarReader := tar.NewReader(zstdReader)
+	for {
+		header, err := tarReader.Next()
+		if err == io.EOF {
+			break
+		}
+		if err != nil {
+			return configs.Manifest{}, err
+		}
+
+		if filepath.Base(header.Name) == "manifest.toml" {
+			decoder := toml.NewDecoder(tarReader)
+
+			var manifest configs.Manifest
+
+			if err := decoder.Decode(&manifest); err != nil {
+				return configs.Manifest{}, nil
+			}
+
+			return manifest, nil
+		}
+
+	}
+	return configs.Manifest{}, errors_packets.ErrCantFindManifestTOML
+}
+
+// CopyDir copies a directory from source to destination
+func CopyDir(src string, dest string) error {
+	if stats, err := os.Stat(src); err != nil {
+		return err
+	} else {
+		if stats.IsDir() {
+			files, err := os.ReadDir(src)
+			if err != nil {
+				return err
+			}
+
+			if err := os.MkdirAll(dest, 0o755); err != nil {
+				return err
+			}
+
+			for _, file := range files {
+				if file.IsDir() {
+					CopyDir(filepath.Join(src, file.Name()), filepath.Join(dest, file.Name()))
+					continue
+				}
+				srcFile := filepath.Join(src, file.Name())
+
+				f, err := os.Create(filepath.Join(dest, file.Name()))
+				if err != nil {
+					return err
+				}
+				defer f.Close()
+
+				opennedSrcFile, err := os.Open(srcFile)
+				if err != nil {
+					return err
+				}
+				defer opennedSrcFile.Close()
+				if _, err := io.Copy(f, opennedSrcFile); err != nil {
+					return err
+				}
+
+			}
+		} else {
+			if err := CopyFile(src, dest); err != nil {
+				return err
+			}
+		}
+	}
+	return nil
+}
+
+// CopyFile copies a file from source to destination
+func CopyFile(source string, destination string) error {
+	src, err := os.Open(source)
+	if err != nil {
+		return err
+	}
+	defer src.Close()
+
+	status, err := src.Stat()
+	if err != nil {
+		return err
+	}
+
+	err = os.MkdirAll(filepath.Dir(destination), 0o755)
+	if err != nil {
+		return err
+	}
+
+	dst, err := os.Create(destination)
+	if err != nil {
+		if !os.IsExist(err) {
+			dst, err = os.Open(destination)
+			if err != nil {
+				return err
+			}
+		} else {
+			return err
+		}
+	}
+
+	defer dst.Close()
+	if err := dst.Chmod(status.Mode()); err != nil {
+		return err
+	}
+
+	_, err = io.Copy(dst, src)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+// Write writes the package file to the cache directory and returns the path to it
+func (p *Package) Write() (string, error) {
+	if err := os.WriteFile(filepath.Join(consts.DefaultCache_d, p.Filename), p.PackageF, 0o644); err != nil {
+		_ = os.Remove(filepath.Join(consts.DefaultCache_d, p.Filename))
+		return "", err
+	}
+
+	return filepath.Join(consts.DefaultCache_d, p.Filename), nil
+}
+
+func (p *Package) AddToInstalledDB(inCache int, packagePath string) error {
+	db, err := sql.Open("sqlite", consts.InstalledDB)
+	if err != nil {
+		return err
+	}
+	defer db.Close()
+
+	var success bool
+
+	defer func() {
+		if !success {
+			_, err := db.Exec("DELETE FROM packages WHERE id = ?", p.Manifest.Info.Id)
+			if err != nil {
+				log.Println("failed to rollback package addition:", err)
+			}
+		}
+	}()
+
+	_, err = db.Exec(`
+    INSERT INTO packages (
+        query_name, id, version, description,
+        serial, package_d, filename, os, arch, in_cache
+    ) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?)`,
+		p.QueryName,
+		p.Manifest.Info.Id,
+		p.Version,
+		p.Description,
+		p.Serial,
+		packagePath,
+		p.Filename,
+		p.OS,
+		p.Arch,
+		inCache,
+	)
+	if err != nil {
+		return err
+	}
+
+	for depnName, versionConstraint := range p.Dependencies {
+		_, err = db.Exec("INSERT INTO package_dependencies (package_id, dependency_name, version_constraint) VALUES (?, ?, ?)", p.Manifest.Info.Id, depnName, versionConstraint)
+	}
+
+	success = true
+	return err
+}
+
+func CheckIfPackageInstalled(name string) (bool, error) {
+	db, err := sql.Open("sqlite", consts.InstalledDB)
+	if err != nil {
+		return false, err
+	}
+	defer db.Close()
+
+	var exists bool
+	err = db.QueryRow("SELECT EXISTS(SELECT 1 FROM packages WHERE id = ? OR query_name = ?)", name, name).Scan(&exists)
+	if err != nil {
+		return false, err
+	}
+
+	return exists, nil
+}
+
+func GetDependencies(db *sql.DB, id string) (map[string]string, error) {
+
+	rows, err := db.Query("SELECT dependency_name, version_constraint FROM package_dependencies WHERE package_id = ?", id)
+	if err != nil {
+		return map[string]string{}, err
+	}
+	defer rows.Close()
+
+	dependencies := make(map[string]string)
+
+	for rows.Next() {
+		var a, versionConstraint string
+		if err := rows.Scan(&a, &versionConstraint); err != nil {
+			return map[string]string{}, err
+		}
+		dependencies[a] = versionConstraint
+	}
+
+	return dependencies, nil
+
+}
+
+func ResolvDependencies(depnList map[string]string) ([]string, error) {
+	db, err := sql.Open("sqlite", consts.IndexDB)
+	if err != nil {
+		return []string{}, err
+	}
+	defer db.Close()
+
+	var resolved []string
+	for dependencieName, constraint := range depnList {
+
+		var filter, order string
+		value := strings.TrimLeft(constraint, "<>=")
+
+		switch {
+		case strings.HasPrefix(constraint, ">"):
+			filter = fmt.Sprintf("AND serial > %s", value)
+			order = "ORDER BY serial ASC LIMIT 1"
+		case strings.HasPrefix(constraint, "<="):
+			filter = fmt.Sprintf("AND serial <= %s", value)
+			order = "ORDER BY serial DESC LIMIT 1"
+		case strings.HasPrefix(constraint, "<"):
+			filter = fmt.Sprintf("AND serial < %s", value)
+			order = "ORDER BY serial DESC LIMIT 1"
+		case strings.HasPrefix(constraint, "="):
+			filter = fmt.Sprintf("AND serial = %s", value)
+			order = ""
+		}
+
+		var packageId string
+
+		err := db.QueryRow(fmt.Sprintf("SELECT id FROM packages WHERE query_name = ? %s %s", filter, order), dependencieName).Scan(&packageId)
+		if err != nil {
+			if err == sql.ErrNoRows {
+				continue
+			}
+			return []string{}, err
+		}
+
+		resolved = append(resolved, packageId)
+
+		dp, err := GetDependencies(db, packageId)
+		if err != nil {
+			return resolved, err
+		}
+
+		depn, err := ResolvDependencies(dp)
+		if err != nil {
+			return resolved, err
+		}
+
+		resolved = append(resolved, depn...)
+	}
+
+	return resolved, nil
+}
+
+func ManifestFileRead(file io.Reader) (configs.Manifest, error) {
+	decoder := toml.NewDecoder(file)
+
+	var manifest configs.Manifest
+
+	if err := decoder.Decode(&manifest); err != nil {
+		return configs.Manifest{}, nil
+	}
+
+	return manifest, nil
+}
+
+func RemoveFromInstalledDB(id string) error {
+	db, err := sql.Open("sqlite", consts.InstalledDB)
+	if err != nil {
+		return err
+	}
+
+	if _, err = db.Exec("DELETE FROM packages WHERE id = ? OR query_name = ?", id, id); err != nil {
+		return err
+	}
+
+	return nil
+}
+
+// GetPackage retrieves package information from the index database and downloads the package file
+func GetPackage(id string) (Package, error) {
+
+	var this Package
+	var peers []Peer
+
+	db, err := sql.Open("sqlite", consts.IndexDB)
+	if err != nil {
+		return this, err
+	}
+	defer db.Close()
+
+	var packageUrl string
+	err = db.QueryRow("SELECT query_name, version, package_url, image_url, description, author, author_verified, os, arch, signature, public_key, serial, size FROM packages WHERE id = ?", id).
+		Scan(
+			&this.QueryName,
+			&this.Version,
+			&packageUrl,
+			&this.ImageUrl,
+			&this.Description,
+			&this.Author,
+			&this.AuthorVerified,
+			&this.OS,
+			&this.Arch,
+			&this.Signature,
+			&this.PublicKey,
+			&this.Serial,
+			&this.Size,
+		)
+	if err != nil {
+		return Package{}, err
+	}
+
+	rows, err := db.Query("SELECT dependency_name, version_constraint FROM package_dependencies WHERE package_id = ?", id)
+	if err != nil {
+		return Package{}, err
+	}
+	defer rows.Close()
+
+	for rows.Next() {
+		var a, vConstraint string
+		if err := rows.Scan(&a, &vConstraint); err != nil {
+			return Package{}, err
+		}
+
+		this.Dependencies[a] = vConstraint
+	}
+
+	filename := path.Base(packageUrl)
+	this.Filename = filename
+
+	dirEntry, err := os.ReadDir(consts.DefaultCache_d)
+	if err != nil {
+		return Package{}, err
+	}
+
+	for _, v := range dirEntry {
+		if v.Name() == filename {
+			this.PackageF, err = os.ReadFile(filepath.Join(consts.DefaultCache_d, filename))
+			if err != nil {
+				break
+			}
+			goto skipping
+
+		}
+	}
+
+	peers, err = AskLAN(filename)
+	if err != nil {
+		return Package{}, err
+	}
+
+	if len(peers) == 0 {
+		this.PackageF, err = GetFileHTTP(packageUrl)
+		if err != nil {
+			return Package{}, err
+		}
+	} else {
+		var totalerrors int = 0
+		for _, peer := range peers {
+			this.PackageF, err = GetFileHTTP(fmt.Sprintf("http://%s:%d/%s", peer.IP, peer.Port, filename))
+			if err == nil {
+				break
+			} else {
+				totalerrors++
+			}
+		}
+		if totalerrors == len(peers) {
+			this.PackageF, err = GetFileHTTP(packageUrl)
+			if err != nil {
+				return Package{}, err
+			}
+		}
+	}
+
+skipping:
+
+	reader := bytes.NewReader(this.PackageF)
+	this.Manifest, err = ReadManifest(reader)
+	if err != nil {
+		return Package{}, err
+	}
+
+	if !ed25519.Verify(this.PublicKey, this.PackageF, this.Signature) {
+		return Package{}, errors_packets.ErrInvalidSignature
+	}
+
+	return this, nil
+}
+
+func GetPacketsUID() (int, error) {
+	_ = exec.Command("useradd", "-M", "-N", "-r", "packets").Run()
+	cmd := exec.Command("id", "-u", "packets")
+
+	out, err := cmd.CombinedOutput()
+	if err != nil {
+		return -1, err
+	}
+
+	s := strings.TrimSpace(string(out))
+	uid, err := strconv.Atoi(s)
+	if err != nil {
+		return -1, err
+	}
+	return uid, nil
+}
+
+func ChangeToNoPermission() error {
+	uid, err := GetPacketsUID()
+	if err != nil {
+		return err
+	}
+
+	return syscall.Setresuid(0, uid, 0)
+
+}
+
+func ElevatePermission() error { return syscall.Setresuid(0, 0, 0) }

pkg/main.go

@@ -0,0 +1,164 @@
+package packets
+
+import (
+	"archive/tar"
+	"bytes"
+	"io"
+	"os"
+	"packets/internal/utils"
+	"runtime"
+
+	utils_lua "packets/internal/utils/lua"
+	"path/filepath"
+	"strings"
+
+	"github.com/klauspost/compress/zstd"
+	lua "github.com/yuin/gopher-lua"
+	_ "modernc.org/sqlite"
+)
+
+// Install exctract and fully install from a package file ( tar.zst )
+func InstallPackage(file []byte, destDir string) error {
+	manifest, err := utils.ReadManifest(bytes.NewReader(file))
+	if err != nil {
+		return err
+	}
+
+	zstdReader, err := zstd.NewReader(bytes.NewReader(file))
+	if err != nil {
+		return err
+	}
+	defer zstdReader.Close()
+
+	tarReader := tar.NewReader(zstdReader)
+
+	uid, err := utils.GetPacketsUID()
+	if err != nil {
+		return err
+	}
+
+	for {
+		hdr, err := tarReader.Next()
+		if err == io.EOF {
+			break
+		}
+		if err != nil {
+			return err
+		}
+
+		rel := filepath.Clean(hdr.Name)
+
+		if rel == ".." || strings.HasPrefix(rel, ".."+string(os.PathSeparator)) {
+			continue
+		}
+
+		if err := os.MkdirAll(destDir, 0775); err != nil {
+			return err
+		}
+
+		if err := os.Chown(destDir, uid, 0); err != nil {
+			return err
+		}
+
+		absPath := filepath.Join(destDir, rel)
+
+		switch hdr.Typeflag {
+
+		case tar.TypeDir:
+			err = os.MkdirAll(absPath, os.FileMode(hdr.Mode))
+			if err != nil {
+				return err
+			}
+			if err := os.Chown(absPath, uid, 0); err != nil {
+				return err
+			}
+
+		case tar.TypeReg:
+
+			err = os.MkdirAll(filepath.Dir(absPath), 0775)
+			if err != nil {
+				return err
+			}
+
+			out, err := os.Create(absPath)
+			if err != nil {
+				return err
+			}
+
+			_, err = io.Copy(out, tarReader)
+			out.Close()
+			if err != nil {
+				return err
+			}
+
+			err = os.Chmod(absPath, os.FileMode(0775))
+			if err != nil {
+				return err
+			}
+
+			if filepath.Base(hdr.Name) == "manifest.toml" || filepath.Base(hdr.Name) == manifest.Hooks.Install || filepath.Base(hdr.Name) == manifest.Hooks.Remove {
+				err = os.Chmod(absPath, os.FileMode(0755))
+				if err != nil {
+					return err
+				}
+			} else {
+				if err := os.Chown(absPath, uid, 0); err != nil {
+					return err
+				}
+			}
+		}
+	}
+
+	L, err := utils_lua.GetSandBox()
+	if err != nil {
+		return err
+	}
+	L.SetGlobal("data_dir", lua.LString(filepath.Join(destDir, "data")))
+	L.SetGlobal("script", lua.LString(manifest.Hooks.Install))
+
+	runtime.LockOSThread()
+	defer runtime.UnlockOSThread()
+
+	if err := utils.ChangeToNoPermission(); err != nil {
+		return err
+	}
+	if err := L.DoFile(filepath.Join(destDir, manifest.Hooks.Install)); err != nil {
+		return err
+	}
+
+	if err := utils.ElevatePermission(); err != nil {
+		return err
+	}
+
+	return nil
+}
+
+// ExecuteRemoveScript executes the remove script from the package
+func ExecuteRemoveScript(path string) error {
+
+	L, err := utils_lua.GetSandBox()
+	if err != nil {
+		return err
+	}
+
+	L.SetGlobal("data_dir", lua.LFalse)
+	L.SetGlobal("script", lua.LString(path))
+	L.SetGlobal("build", lua.LNil)
+
+	runtime.LockOSThread()
+	defer runtime.UnlockOSThread()
+
+	if err := utils.ChangeToNoPermission(); err != nil {
+		return err
+	}
+
+	if err := L.DoFile(path); err != nil {
+		return err
+	}
+
+	if err := utils.ElevatePermission(); err != nil {
+		return err
+	}
+
+	return nil
+}