Release-Candidate with Dynamic TCP and UDP-Ports
This commit is contained in:
92
main.go
92
main.go
@@ -3,12 +3,12 @@ package main
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import (
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import (
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"bytes"
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"bytes"
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"context"
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"context"
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"fmt"
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"io"
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"io"
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"log"
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"log"
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"net"
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"net"
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"net/http"
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"net/http"
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"os"
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"os"
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"strconv"
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"strings"
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"strings"
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"github.com/redis/go-redis/v9"
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"github.com/redis/go-redis/v9"
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@@ -66,6 +66,18 @@ func main() {
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}
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}
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}
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}
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/* TCP- and UDP-Honeypods */
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portsTCP := []string{"135", "139", "445", "389", "636", "3268", "3269", "88", "3389", "3306", "27017", "5432", "25", "123", "5900"}
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for _, port := range portsTCP {
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go startTCPListener(port)
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}
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portsUDP := []string{"135", "137", "138", "389", "3389", "88"}
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for _, port := range portsUDP {
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go startTCPListener(port)
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}
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// Endpunkte registrieren
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// Endpunkte registrieren
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http.HandleFunc("/", handleRoot)
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http.HandleFunc("/", handleRoot)
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http.HandleFunc("/add", handleAdd)
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http.HandleFunc("/add", handleAdd)
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@@ -103,6 +115,63 @@ func handleAdd(w http.ResponseWriter, r *http.Request) {
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processIP(ip, w)
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processIP(ip, w)
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}
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}
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func startTCPListener(port string) {
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ln, err := net.Listen("tcp", ":"+port)
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if err != nil {
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log.Fatalf("❌ Could not listen on TCP port %s: %v", port, err)
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}
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log.Printf("🚀 TCP Honeypod listening on port %s", port)
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for {
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conn, err := ln.Accept()
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if err != nil {
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log.Printf("⚠️ Error accepting TCP connection: %v", err)
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continue
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}
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go handleTCPConn(conn)
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}
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}
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func handleTCPConn(conn net.Conn) {
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defer conn.Close()
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ip, _, err := net.SplitHostPort(conn.RemoteAddr().String())
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if err != nil {
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log.Printf("⚠️ Could not parse remote address: %v", err)
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return
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}
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log.Printf("👀 TCP connection from %s", ip)
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processIP(ip, nil) // Anpassung nötig: processIP muss nil w als Option haben
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}
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func startUDPListener(port string) {
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addr := net.UDPAddr{
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Port: portInt(port),
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IP: net.ParseIP("0.0.0.0"),
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}
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conn, err := net.ListenUDP("udp", &addr)
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if err != nil {
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log.Fatalf("❌ Could not listen on UDP port %s: %v", port, err)
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}
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log.Printf("🚀 UDP Honeypod listening on port %s", port)
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buf := make([]byte, 1024)
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for {
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n, remoteAddr, err := conn.ReadFromUDP(buf)
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if err != nil {
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log.Printf("⚠️ Error reading UDP packet: %v", err)
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continue
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}
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if n > 0 {
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ip := remoteAddr.IP.String()
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log.Printf("👀 UDP packet from %s", ip)
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processIP(ip, nil) // ebenfalls anpassen
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}
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}
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}
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func portInt(port string) int {
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p, _ := strconv.Atoi(port)
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return p
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}
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func processIP(ip string, w http.ResponseWriter) {
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func processIP(ip string, w http.ResponseWriter) {
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ipKey := ip + "/32"
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ipKey := ip + "/32"
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@@ -110,24 +179,31 @@ func processIP(ip string, w http.ResponseWriter) {
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err := redisClient.HSet(ctx, hashName, ipKey, 1).Err()
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err := redisClient.HSet(ctx, hashName, ipKey, 1).Err()
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if err != nil {
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if err != nil {
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log.Printf("❌ Error writing to redis: %v", err)
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log.Printf("❌ Error writing to redis: %v", err)
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http.Error(w, "Interner Fehler", http.StatusInternalServerError)
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if w != nil {
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http.Error(w, "Interner Fehler", http.StatusInternalServerError)
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}
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return
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return
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}
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}
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log.Printf("✅ IP %s in saved to redis", ipKey)
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log.Printf("✅ IP %s in saved to redis", ipKey)
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w.WriteHeader(http.StatusServiceUnavailable)
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if w != nil {
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w.Write([]byte("Temporary unavailable"))
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w.WriteHeader(http.StatusServiceUnavailable)
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w.Write([]byte("Temporary unavailable"))
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}
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} else {
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} else {
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// Slave: an Master weiterleiten
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// Slave: an Master weiterleiten
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resp, err := http.Post(masterURL+"/add", "text/plain", bytes.NewBuffer([]byte(ip)))
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resp, err := http.Post(masterURL+"/add", "text/plain", bytes.NewBuffer([]byte(ip)))
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if err != nil {
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if err != nil {
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log.Printf("❌ Error relaying to Master: %v", err)
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log.Printf("❌ Error relaying to Master: %v", err)
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http.Error(w, "Error relaying", http.StatusBadGateway)
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if w != nil {
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http.Error(w, "Error relaying", http.StatusBadGateway)
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}
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return
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return
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}
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}
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defer resp.Body.Close()
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defer resp.Body.Close()
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w.WriteHeader(resp.StatusCode)
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if w != nil {
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fmt.Println(resp.Body)
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w.WriteHeader(resp.StatusCode)
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io.Copy(w, resp.Body)
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io.Copy(w, resp.Body)
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}
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}
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}
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}
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}
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