implement package synchronization and validation; update database schema and add error handling

cmd/packets/main.go

@@ -1,12 +1,14 @@
 package main
 
 import (
+	"bufio"
 	"database/sql"
 	"fmt"
 	"log"
 	"os"
 	"packets/configs"
 	"packets/internal/consts"
+	"packets/internal/utils"
 	"path/filepath"
 
 	"github.com/pelletier/go-toml/v2"
@@ -17,13 +19,14 @@ import (
 // init is doing some verifications
 func init() {
 
+	log.SetFlags(0)
+
 	_, err := os.Stat(consts.DefaultLinux_d)
 	if os.IsNotExist(err) {
-		err := os.Mkdir(consts.DefaultLinux_d, 0644)
+		err := os.Mkdir(consts.DefaultLinux_d, 0755)
 		if err != nil {
 			if os.IsPermission(err) {
-				fmt.Println("can't create packets root directory, please run as root")
+				log.Fatal("can't create packets root directory, please run as root")
-				os.Exit(1)
 			} else {
 				log.Fatal(err)
 			}
@@ -34,7 +37,7 @@ func init() {
 	if err != nil {
 
 		if os.IsNotExist(err) {
-			fmt.Println("index.db does not exist use \"packets sync\"")
+			fmt.Println("index.db does not exist, try to use \"packets sync\"")
 		} else {
 			log.Fatal(err)
 		}
@@ -48,7 +51,7 @@ func init() {
 				log.Fatal(db)
 			}
 			defer db.Close()
-			db.Exec("CREATE TABLE IF NOT EXISTS packages (realname TEXT NOT NULL UNIQUE PRIMARY KEY, version TEXT NOT NULL, dependencies TEXT, name TEXT, family TEXT NOT NULL, serial INTEGER, package_d TEXT NOT NULL)")
+			db.Exec("CREATE TABLE IF NOT EXISTS packages (name TEXT NOT NULL UNIQUE PRIMARY KEY, version TEXT NOT NULL, dependencies TEXT NOT NULL DEFAULT '', family TEXT NOT NULL, serial INTEGER, package_d TEXT NOT NULL)")
 		} else {
 			log.Fatal(err)
 		}
@@ -78,16 +81,117 @@ func init() {
 
 // COBRA CMDS
 var rootCmd = &cobra.Command{Use: "packets"}
+
+var syncCmd = &cobra.Command{
+	Use:   "sync [url]",
+	Args:  cobra.MaximumNArgs(1),
+	Short: "Syncronizes with an remote index.db, and check if the data dir is changed",
+	Run: func(cmd *cobra.Command, args []string) {
+		if os.Getuid() != 0 {
+			fmt.Println("please, run as root")
+			return
+		}
+		syncUrl := consts.DefaultSyncUrl
+		if len(args) > 0 {
+			syncUrl = args[0]
+		}
+
+		DBB, err := utils.GetFileHTTP(syncUrl)
+		if err != nil {
+			log.Fatal(err)
+		}
+
+		if err := os.WriteFile(consts.IndexDB, DBB, 0774); err != nil {
+			log.Fatal(err)
+		}
+
+		fmt.Println("Sucessifully sync!")
+		os.Exit(0)
+	},
+}
+
+type Quer1 struct {
+	Name        string
+	Version     string
+	Description string
+}
+
 var installCmd = &cobra.Command{
 	Use:   "install {package} [packages...]",
 	Short: "Install a package",
 	Args:  cobra.MinimumNArgs(1),
 	Run: func(cmd *cobra.Command, args []string) {
+		db, err := sql.Open("sqlite", consts.IndexDB)
+		if err != nil {
+			fmt.Println(err)
+		}
+		defer db.Close()
+
+		for _, inputName := range args {
+
+			var exist bool
+			err := db.QueryRow("SELECT EXISTS(SELECT 1 FROM packages WHERE name = ?)", inputName).Scan(&exist)
+			if err != nil {
+				if err != sql.ErrNoRows {
+					log.Panic(err)
+				}
+			}
+			if exist {
+
+			}
+
+			rows, err := db.Query("SELECT name, version, descriptionFROM packages WHERE query_name = ?", inputName)
+			if err != nil {
+				log.Fatal(err)
+
+			}
+
+			defer rows.Close()
+
+			var pkgs []Quer1
+			for rows.Next() {
+				var q Quer1
+				if err := rows.Scan(&q.Name, &q.Version, &q.Description); err != nil {
+					log.Panic(err)
+				}
+				pkgs = append(pkgs, q)
+			}
+			switch len(pkgs) {
+			case 0:
+				log.Fatalf("can't find any results for %s\n", inputName)
+
+			case 1:
+				fmt.Printf(":: Founded 1 package for %s \n", inputName)
+
+				fmt.Printf("Downloading %s \n", pkgs[0].Name)
+				goto install
+
+			default:
+
+				fmt.Printf(":: Founded %d packages for (%s)\n Select 1 to install\n", len(pkgs), inputName)
+				for i, q := range pkgs {
+					fmt.Printf("[%d] %s : %s\n     %s\n", i, q.Name, q.Version, q.Description)
+				}
+				var choice int
+			optionagain:
+				fmt.Print(">> ")
+				fmt.Fscan(bufio.NewReader(os.Stdin), &choice)
+				if choice > len(pkgs) || choice < 0 {
+					fmt.Println("invalid option")
+					goto optionagain
+				}
+
+				return
+			}
+
+		install:
+		}
 
 	},
 }
 
 func main() {
 	rootCmd.AddCommand(installCmd)
+	rootCmd.AddCommand(syncCmd)
 	rootCmd.Execute()
 }

doc/indexdbSchema.txt

@@ -13,5 +13,23 @@ CREATE TABLE packages(
     family          TEXT NOT NULL,
     arch            TEXT NOT NULL,
     os              TEXT NOT NULL,
+    size            INTEGER NOT NULL DEFAULT 0,
+    serial          INTEGER NOT NULL
+);
+
+
+CREATE TABLE IF NOT EXISTS packages (
+    query_name      TEXT NOT NULL,
+    name            TEXT NOT NULL UNIQUE PRIMARY KEY, 
+    version         TEXT NOT NULL, 
+    dependencies    TEXT NOT NULL DEFAULT '', 
+    description     TEXT NOT NULL,
+    family          TEXT NOT NULL,
+    serial          INTEGER NOT NULL UNIQUE, 
+    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
 );

go.mod

@@ -12,17 +12,43 @@ require (
 )
 
 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/gin-gonic/gin v1.11.0 // 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/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/spf13/pflag v1.0.10 // indirect
+	github.com/twitchyliquid64/golang-asm v0.15.1 // indirect
+	github.com/ugorji/go/codec v1.3.0 // indirect
+	go.uber.org/mock v0.5.0 // indirect
+	golang.org/x/arch v0.20.0 // 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

@@ -1,20 +1,60 @@
+github.com/bytedance/sonic v1.14.0 h1:/OfKt8HFw0kh2rj8N0F6C/qPGRESq0BbaNZgcNXXzQQ=
+github.com/bytedance/sonic v1.14.0/go.mod h1:WoEbx8WTcFJfzCe0hbmyTGrfjt8PzNEBdxlNUO24NhA=
+github.com/bytedance/sonic/loader v0.3.0 h1:dskwH8edlzNMctoruo8FPTJDF3vLtDT0sXZwvZJyqeA=
+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/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/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=
+github.com/google/gofuzz v1.0.0/go.mod h1:dBl0BpW6vV/+mYPU4Po3pmUjxk6FQPldtuIdl/M65Eg=
 github.com/google/pprof v0.0.0-20250317173921-a4b03ec1a45e h1:ijClszYn+mADRFY17kjQEVQ1XRhq2/JR1M3sGqeJoxs=
 github.com/google/pprof v0.0.0-20250317173921-a4b03ec1a45e/go.mod h1:boTsfXsheKC2y+lKOCMpSfarhxDeIzfZG1jqGcPl3cA=
 github.com/google/uuid v1.6.0 h1:NIvaJDMOsjHA8n1jAhLSgzrAzy1Hgr+hNrb57e+94F0=
 github.com/google/uuid v1.6.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
 github.com/inconshreveable/mousetrap v1.1.0 h1:wN+x4NVGpMsO7ErUn/mUI3vEoE6Jt13X2s0bqwp9tc8=
 github.com/inconshreveable/mousetrap v1.1.0/go.mod h1:vpF70FUmC8bwa3OWnCshd2FqLfsEA9PFc4w1p2J65bw=
+github.com/json-iterator/go v1.1.12 h1:PV8peI4a0ysnczrg+LtxykD8LfKY9ML6u2jnxaEnrnM=
+github.com/json-iterator/go v1.1.12/go.mod h1:e30LSqwooZae/UwlEbR2852Gd8hjQvJoHmT4TnhNGBo=
 github.com/klauspost/compress v1.18.0 h1:c/Cqfb0r+Yi+JtIEq73FWXVkRonBlf0CRNYc8Zttxdo=
 github.com/klauspost/compress v1.18.0/go.mod h1:2Pp+KzxcywXVXMr50+X0Q/Lsb43OQHYWRCY2AiWywWQ=
+github.com/klauspost/cpuid/v2 v2.3.0 h1:S4CRMLnYUhGeDFDqkGriYKdfoFlDnMtqTiI/sFzhA9Y=
+github.com/klauspost/cpuid/v2 v2.3.0/go.mod h1:hqwkgyIinND0mEev00jJYCxPNVRVXFQeu1XKlok6oO0=
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+github.com/leodido/go-urn v1.4.0/go.mod h1:bvxc+MVxLKB4z00jd1z+Dvzr47oO32F/QSNjSBOlFxI=
 github.com/mattn/go-isatty v0.0.20 h1:xfD0iDuEKnDkl03q4limB+vH+GxLEtL/jb4xVJSWWEY=
 github.com/mattn/go-isatty v0.0.20/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
+github.com/modern-go/concurrent v0.0.0-20180228061459-e0a39a4cb421 h1:ZqeYNhU3OHLH3mGKHDcjJRFFRrJa6eAM5H+CtDdOsPc=
+github.com/modern-go/concurrent v0.0.0-20180228061459-e0a39a4cb421/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=
+github.com/modern-go/reflect2 v1.0.2 h1:xBagoLtFs94CBntxluKeaWgTMpvLxC4ur3nMaC9Gz0M=
+github.com/modern-go/reflect2 v1.0.2/go.mod h1:yWuevngMOJpCy52FWWMvUC8ws7m/LJsjYzDa0/r8luk=
 github.com/ncruces/go-strftime v0.1.9 h1:bY0MQC28UADQmHmaF5dgpLmImcShSi2kHU9XLdhx/f4=
 github.com/ncruces/go-strftime v0.1.9/go.mod h1:Fwc5htZGVVkseilnfgOVb9mKy6w1naJmn9CehxcKcls=
 github.com/pelletier/go-toml/v2 v2.2.4 h1:mye9XuhQ6gvn5h28+VilKrrPoQVanw5PMw/TB0t5Ec4=
 github.com/pelletier/go-toml/v2 v2.2.4/go.mod h1:2gIqNv+qfxSVS7cM2xJQKtLSTLUE9V8t9Stt+h56mCY=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/quic-go/qpack v0.5.1 h1:giqksBPnT/HDtZ6VhtFKgoLOWmlyo9Ei6u9PqzIMbhI=
+github.com/quic-go/qpack v0.5.1/go.mod h1:+PC4XFrEskIVkcLzpEkbLqq1uCoxPhQuvK5rH1ZgaEg=
+github.com/quic-go/quic-go v0.54.0 h1:6s1YB9QotYI6Ospeiguknbp2Znb/jZYjZLRXn9kMQBg=
+github.com/quic-go/quic-go v0.54.0/go.mod h1:e68ZEaCdyviluZmy44P6Iey98v/Wfz6HCjQEm+l8zTY=
 github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec h1:W09IVJc94icq4NjY3clb7Lk8O1qJ8BdBEF8z0ibU0rE=
 github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec/go.mod h1:qqbHyh8v60DhA7CoWK5oRCqLrMHRGoxYCSS9EjAz6Eo=
 github.com/russross/blackfriday/v2 v2.1.0/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=
@@ -23,8 +63,25 @@ github.com/spf13/cobra v1.10.1/go.mod h1:7SmJGaTHFVBY0jW4NXGluQoLvhqFQM+6XSKD+P4
 github.com/spf13/pflag v1.0.9/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An2Bg=
 github.com/spf13/pflag v1.0.10 h1:4EBh2KAYBwaONj6b2Ye1GiHfwjqyROoF4RwYO+vPwFk=
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+github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/objx v0.4.0/go.mod h1:YvHI0jy2hoMjB+UWwv71VJQ9isScKT/TqJzVSSt89Yw=
+github.com/stretchr/objx v0.5.0/go.mod h1:Yh+to48EsGEfYuaHDzXPcE3xhTkx73EhmCGUpEOglKo=
+github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
+github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
+github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO+kdMU+MU=
+github.com/stretchr/testify v1.8.1/go.mod h1:w2LPCIKwWwSfY2zedu0+kehJoqGctiVI29o6fzry7u4=
+github.com/twitchyliquid64/golang-asm v0.15.1 h1:SU5vSMR7hnwNxj24w34ZyCi/FmDZTkS4MhqMhdFk5YI=
+github.com/twitchyliquid64/golang-asm v0.15.1/go.mod h1:a1lVb/DtPvCB8fslRZhAngC2+aY1QWCk3Cedj/Gdt08=
+github.com/ugorji/go/codec v1.3.0 h1:Qd2W2sQawAfG8XSvzwhBeoGq71zXOC/Q1E9y/wUcsUA=
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+go.uber.org/mock v0.5.0 h1:KAMbZvZPyBPWgD14IrIQ38QCyjwpvVVV6K/bHl1IwQU=
+go.uber.org/mock v0.5.0/go.mod h1:ge71pBPLYDk7QIi1LupWxdAykm7KIEFchiOqd6z7qMM=
+golang.org/x/arch v0.20.0 h1:dx1zTU0MAE98U+TQ8BLl7XsJbgze2WnNKF/8tGp/Q6c=
+golang.org/x/arch v0.20.0/go.mod h1:bdwinDaKcfZUGpH09BB7ZmOfhalA8lQdzl62l8gGWsk=
+golang.org/x/crypto v0.42.0 h1:chiH31gIWm57EkTXpwnqf8qeuMUi0yekh6mT2AvFlqI=
+golang.org/x/crypto v0.42.0/go.mod h1:4+rDnOTJhQCx2q7/j6rAN5XDw8kPjeaXEUR2eL94ix8=
 golang.org/x/exp v0.0.0-20250620022241-b7579e27df2b h1:M2rDM6z3Fhozi9O7NWsxAkg/yqS/lQJ6PmkyIV3YP+o=
 golang.org/x/exp v0.0.0-20250620022241-b7579e27df2b/go.mod h1:3//PLf8L/X+8b4vuAfHzxeRUl04Adcb341+IGKfnqS8=
 golang.org/x/mod v0.27.0 h1:kb+q2PyFnEADO2IEF935ehFUXlWiNjJWtRNgBLSfbxQ=
@@ -36,9 +93,14 @@ golang.org/x/sync v0.17.0/go.mod h1:9KTHXmSnoGruLpwFjVSX0lNNA75CykiMECbovNTZqGI=
 golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.36.0 h1:KVRy2GtZBrk1cBYA7MKu5bEZFxQk4NIDV6RLVcC8o0k=
 golang.org/x/sys v0.36.0/go.mod h1:OgkHotnGiDImocRcuBABYBEXf8A9a87e/uXjp9XT3ks=
+golang.org/x/text v0.29.0 h1:1neNs90w9YzJ9BocxfsQNHKuAT4pkghyXc4nhZ6sJvk=
+golang.org/x/text v0.29.0/go.mod h1:7MhJOA9CD2qZyOKYazxdYMF85OwPdEr9jTtBpO7ydH4=
 golang.org/x/tools v0.36.0 h1:kWS0uv/zsvHEle1LbV5LE8QujrxB3wfQyxHfhOk0Qkg=
 golang.org/x/tools v0.36.0/go.mod h1:WBDiHKJK8YgLHlcQPYQzNCkUxUypCaa5ZegCVutKm+s=
+google.golang.org/protobuf v1.36.9 h1:w2gp2mA27hUeUzj9Ex9FBjsBm40zfaDtEWow293U7Iw=
+google.golang.org/protobuf v1.36.9/go.mod h1:fuxRtAxBytpl4zzqUh6/eyUujkJdNiuEkXntxiD/uRU=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 modernc.org/cc/v4 v4.26.2 h1:991HMkLjJzYBIfha6ECZdjrIYz2/1ayr+FL8GN+CNzM=
 modernc.org/cc/v4 v4.26.2/go.mod h1:uVtb5OGqUKpoLWhqwNQo/8LwvoiEBLvZXIQ/SmO6mL0=

internal/consts/consts.go

@@ -9,4 +9,6 @@ const (
 	DefaultData_d   = "/opt/packets"
 	LANDeadline     = 2 * time.Second
 	IndexDB         = "/etc/packets/index.db"
+	InstalledDB     = "/etc/packets/installed.db"
+	DefaultSyncUrl  = "https://servidordomal.fun/index.db"
 )

internal/errors/errors.go

@@ -5,4 +5,5 @@ 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/utils/utils.go

@@ -2,11 +2,14 @@ package utils
 
 import (
 	"archive/tar"
+	"crypto/ed25519"
+	"database/sql"
 	"io"
 	"log"
 	"net/http"
 	"os"
 	"packets/configs"
+	"packets/internal/consts"
 	errors_packets "packets/internal/errors"
 	"path/filepath"
 
@@ -14,7 +17,29 @@ import (
 	"github.com/pelletier/go-toml/v2"
 )
 
-func GetFileHTTP(url string) (*[]byte, error) {
+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
+
+	Signature []byte
+	PublicKey ed25519.PublicKey
+
+	Manifest configs.Manifest
+
+	Family string
+	Serial int
+}
+
+func GetFileHTTP(url string) ([]byte, error) {
 
 	resp, err := http.Get(url)
 	if err != nil {
@@ -30,14 +55,14 @@ func GetFileHTTP(url string) (*[]byte, error) {
 		return nil, err
 	}
 
-	return &fileBytes, nil
+	return fileBytes, nil
 }
 
 // ReadManifest is crucial to get package metadata it reads manifest.toml from a package file (tar.zst)
-func ReadManifest(file *os.File) (*configs.Manifest, error) {
+func ReadManifest(file io.Reader) (configs.Manifest, error) {
 	zstdReader, err := zstd.NewReader(file)
 	if err != nil {
-		return nil, err
+		return configs.Manifest{}, err
 	}
 	defer zstdReader.Close()
 
@@ -48,7 +73,7 @@ func ReadManifest(file *os.File) (*configs.Manifest, error) {
 			break
 		}
 		if err != nil {
-			return nil, err
+			return configs.Manifest{}, err
 		}
 
 		if filepath.Base(header.Name) == "manifest.toml" {
@@ -60,13 +85,14 @@ func ReadManifest(file *os.File) (*configs.Manifest, error) {
 				log.Fatal(err)
 			}
 
-			return &manifest, nil
+			return manifest, nil
 		}
 
 	}
-	return nil, errors_packets.ErrCantFindManifestTOML
+	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
@@ -114,6 +140,7 @@ func CopyDir(src string, dest string) error {
 	return nil
 }
 
+// CopyFile copies a file from source to destination
 func CopyFile(source string, destination string) error {
 
 	src, err := os.Open(source)
@@ -157,3 +184,25 @@ func CopyFile(source string, destination string) error {
 
 	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, 0644); 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() error {
+	db, err := sql.Open("sqlite", consts.InstalledDB)
+	if err != nil {
+		return err
+	}
+	defer db.Close()
+
+	_, err = db.Exec("INSERT INTO packages (name, version, dependencies)")
+	return err
+}

pkg/main.go

@@ -2,19 +2,27 @@ package pkg
 
 import (
 	"archive/tar"
+	"bytes"
+	"crypto/ed25519"
+	"database/sql"
+	"fmt"
 	"io"
 	"os"
 	"packets/configs"
+	"packets/internal/consts"
+	errors_packets "packets/internal/errors"
 	"packets/internal/utils"
 	utils_lua "packets/internal/utils/lua"
+	"path"
 	"path/filepath"
 	"strings"
 
 	"github.com/klauspost/compress/zstd"
 	lua "github.com/yuin/gopher-lua"
+	_ "modernc.org/sqlite"
 )
 
-// Install exctract and install from a package file ( tar.zst )
+// Install exctract and fully install from a package file ( tar.zst )
 func InstallPackage(file *os.File) error {
 
 	manifest, err := utils.ReadManifest(file)
@@ -107,6 +115,7 @@ func InstallPackage(file *os.File) error {
 	return nil
 }
 
+// ExecuteRemoveScript executes the remove script from the package
 func ExecuteRemoveScript(path string) error {
 
 	L, err := utils_lua.GetSandBox(".")
@@ -124,3 +133,78 @@ func ExecuteRemoveScript(path string) error {
 
 	return nil
 }
+
+// GetPackage retrieves package information from the index database and downloads the package file
+func GetPackage(name string) (utils.Package, error) {
+
+	var this utils.Package
+	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, family, serial, size FROM packages WHERE name = ?", name).
+		Scan(
+			&this.QueryName,
+			&this.Version,
+			&packageUrl,
+			&this.ImageUrl,
+			&this.Description,
+			&this.Author,
+			&this.AuthorVerified,
+			&this.OS,
+			&this.Arch,
+			&this.Signature,
+			&this.PublicKey,
+			&this.Family,
+			&this.Serial,
+			&this.Size,
+		)
+	if err != nil {
+		return utils.Package{}, err
+	}
+
+	filename := path.Base(packageUrl)
+	this.Filename = filename
+	peers, err := utils.AskLAN(filename)
+	if err != nil {
+		return utils.Package{}, err
+	}
+
+	if len(peers) > 0 {
+		this.PackageF, err = utils.GetFileHTTP(packageUrl)
+		if err != nil {
+			return utils.Package{}, err
+		}
+	} else {
+		var totalerrors int = 0
+		for _, peer := range peers {
+			this.PackageF, err = utils.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 = utils.GetFileHTTP(packageUrl)
+			if err != nil {
+				return utils.Package{}, err
+			}
+		}
+	}
+
+	reader := bytes.NewReader(this.PackageF)
+	this.Manifest, err = utils.ReadManifest(reader)
+	if err != nil {
+		return utils.Package{}, err
+	}
+
+	if !ed25519.Verify(this.PublicKey, this.PackageF, this.Signature) {
+		return utils.Package{}, errors_packets.ErrInvalidSignature
+	}
+
+	return this, nil
+}