Updates

main.go

@@ -1,49 +1,69 @@
 package main
 
 import (
-	"database/sql"
-	"encoding/json"
 	"fmt"
 	_ "github.com/go-sql-driver/mysql"
-	"log"
+	"math/rand"
-	"os"
+	"net"
+	"time"
 )
 
-func main() {
+// isPrivate checks if the IP address falls within private IP ranges
-	//resp, err := PingHostname("play.survival-games.cz", 25565)
+func isPrivate(ip [4]byte) bool {
-	resp, err := PingHostname("127.0.0.2", 25565)
+	switch {
-	//resp, err := PingHostname("vps.brn.systems", 25965)
+	case ip[0] == 10:
+		return true
+	case ip[0] == 172 && ip[1] >= 16 && ip[1] <= 31:
+		return true
+	case ip[0] == 192 && ip[1] == 168:
+		return true
+	default:
+		return false
+	}
+}
+
+var triedIPs []net.IP
+
+// generateRandomPublicIP generates a random public IP address
+func generateRandomPublicIP() net.IP {
+	rand.NewSource(time.Now().UnixNano())
+	var ipTemp [4]byte
+	var ip net.IP
+	for {
+		ipTemp[0] = byte(rand.Intn(255)) + 1
+		ipTemp[1] = byte(rand.Intn(256))
+		ipTemp[2] = byte(rand.Intn(256))
+		ipTemp[3] = byte(rand.Intn(256))
+
+		ip = net.IPv4(ipTemp[0], ipTemp[1], ipTemp[2], ipTemp[3])
+
+		// Ensure the generated IP is not in a private range
+		if !ip.IsPrivate() && !ip.IsLoopback() { // Exclude 0.x.x.x and 127.x.x.x (loopback)
+			dupe := false
+			for _, ipTried := range triedIPs {
+				if ipTried.Equal(ip) {
+					dupe = true
+				}
+			}
+			if !dupe {
+				break
+			}
+		}
+	}
+	return ip
+}
+
+func doIPScan() {
+	randomIP := generateRandomPublicIP()
+	_, err := PingIP(randomIP, 25565, "")
 	if err != nil {
-		fmt.Println("Ty debil")
 		fmt.Println(err)
 	}
-	connectionBytes, err := os.ReadFile("secrets/.myconnectionstring")
-	if err != nil {
-		return
 }
-	db, err := sql.Open("mysql", string(connectionBytes))
+
-	if err != nil {
+func main() {
-		log.Fatal(err)
+	for i := 0; i < 100000000; i++ {
-	}
+		go doIPScan()
-	defer func(db *sql.DB) {
+		time.Sleep(time.Duration(rand.Intn(10)) * time.Millisecond)
-		err := db.Close()
-		if err != nil {
-			log.Fatal(err)
-		}
-	}(db)
-	err = saveResponse(db, resp)
-	if err != nil {
-		log.Fatal(err)
-		return
-	}
-	// Pretty print the response
-	respJson, err := json.MarshalIndent(resp, "", "  ")
-	if err != nil {
-		fmt.Println("Error marshalling response to JSON:", err)
-		return
-	}
-	err = os.WriteFile("out/server.json", respJson, 0644)
-	if err != nil {
-		fmt.Println("Error creating server.json:", err)
 	}
 }

packetsender.go

@@ -2,13 +2,16 @@ package main
 
 import (
 	"bufio"
+	"database/sql"
 	"encoding/binary"
 	"encoding/hex"
 	"encoding/json"
 	"errors"
 	"fmt"
 	"github.com/google/uuid"
+	"log"
 	"net"
+	"os"
 	"reflect"
 	"strconv"
 	"strings"
@@ -34,6 +37,30 @@ func PingIP(ip net.IP, port uint16, host string) (response Response, errOut erro
 		_ = conn.Close()
 	}(conn)
 
+	defer func() {
+		if errOut == nil {
+			connectionBytes, err := os.ReadFile("secrets/.myconnectionstring")
+			if err != nil {
+				return
+			}
+			db, err := sql.Open("mysql", string(connectionBytes))
+			if err != nil {
+				log.Fatal(err)
+			}
+			defer func(db *sql.DB) {
+				err := db.Close()
+				if err != nil {
+					log.Fatal(err)
+				}
+			}(db)
+			err = saveResponse(db, response)
+			if err != nil {
+				log.Fatal(err)
+				return
+			}
+		}
+	}()
+
 	var state byte
 	state = 0
 	// 0 - handshaking