Release 0.3.0

main.go

@@ -3,12 +3,14 @@ package main
 import (
 	"bytes"
 	"context"
+	"encoding/json"
 	"fmt"
 	"io"
 	"log"
 	"net"
 	"net/http"
 	"os"
+	"strconv"
 	"strings"
 
 	"github.com/redis/go-redis/v9"
@@ -23,15 +25,16 @@ var (
 )
 
 func main() {
-	// Modus und Master-URL aus ENV
 	blocklistMode = os.Getenv("BLOCKLIST_MODE")
 	hashName = os.Getenv("HASH_NAME")
 	if hashName == "" {
 		hashName = "bl:manual"
 	}
+
 	//DEBUG
 	//blocklistMode = "master"
 	//DEBUG
+
 	if blocklistMode != "master" && blocklistMode != "slave" {
 		log.Fatal("❌ BLOCKLIST_MODE has to be 'master' or 'slave'")
 	} else {
@@ -40,37 +43,45 @@ func main() {
 
 	if blocklistMode == "slave" {
 		masterURL = os.Getenv("MASTER_URL")
-		log.Println("✅ MASTER_URL set to:", masterURL)
 		//DEBUG
 		//masterURL = "http://127.0.0.1:8081"
 		//DEBUG
 		if masterURL == "" {
 			log.Fatal("❌ MASTER_URL has to be set in slave mode")
 		}
+		log.Println("✅ MASTER_URL set to:", masterURL)
 	}
 
 	if blocklistMode == "master" {
-		// Redis initialisieren
 		redisAddr := os.Getenv("REDIS_ADDR")
 		if redisAddr == "" {
 			redisAddr = "localhost:6379"
 		}
 		log.Println("✅ Redis Connection set to:", redisAddr)
 		redisClient = redis.NewClient(&redis.Options{
-			Addr:     redisAddr,
-			Password: "",
-			DB:       0,
+			Addr: redisAddr,
+			DB:   0,
 		})
 		if err := redisClient.Ping(ctx).Err(); err != nil {
 			log.Fatalf("❌ No connection to redis-server: %v", err)
 		}
 	}
 
-	// Endpunkte registrieren
+	portsTCP := []string{"135", "139", "445", "389", "636", "3268", "3269", "88", "3389", "3306", "27017", "5432", "25", "123", "5900"}
+	for _, port := range portsTCP {
+		go startTCPListener(port)
+	}
+
+	portsUDP := []string{"135", "137", "138", "389", "3389", "88"}
+	for _, port := range portsUDP {
+		go startUDPListener(port)
+	}
+
 	http.HandleFunc("/", handleRoot)
 	http.HandleFunc("/add", handleAdd)
-
-	log.Println("✅ Server running in mode:", blocklistMode)
+	http.HandleFunc("/dashboard", handleDashboard)
+	http.HandleFunc("/dashboard.json", handleDashboardJSON)
+	http.HandleFunc("/metrics", handleMetrics)
 
 	log.Println("🚀 Server listening at :8080")
 	if err := http.ListenAndServe(":8080", nil); err != nil {
@@ -78,14 +89,55 @@ func main() {
 	}
 }
 
+func startTCPListener(port string) {
+	ln, err := net.Listen("tcp", ":"+port)
+	if err != nil {
+		log.Fatalf("❌ Could not listen on TCP port %s: %v", port, err)
+	}
+	log.Printf("🚀 TCP Honeypod listening on port %s", port)
+	for {
+		conn, err := ln.Accept()
+		if err != nil {
+			log.Printf("⚠️ Error accepting TCP connection: %v", err)
+			continue
+		}
+		ip, _, _ := net.SplitHostPort(conn.RemoteAddr().String())
+		processIP(ip, port, "TCP", nil)
+		conn.Close()
+	}
+}
+
+func startUDPListener(port string) {
+	addr := net.UDPAddr{
+		Port: portInt(port),
+		IP:   net.ParseIP("0.0.0.0"),
+	}
+	conn, err := net.ListenUDP("udp", &addr)
+	if err != nil {
+		log.Fatalf("❌ Could not listen on UDP port %s: %v", port, err)
+	}
+	log.Printf("🚀 UDP Honeypod listening on port %s", port)
+	buf := make([]byte, 1024)
+	for {
+		n, remoteAddr, err := conn.ReadFromUDP(buf)
+		if err != nil {
+			log.Printf("⚠️ Error reading UDP packet: %v", err)
+			continue
+		}
+		if n > 0 {
+			ip := remoteAddr.IP.String()
+			processIP(ip, port, "UDP", nil)
+		}
+	}
+}
+
 func handleRoot(w http.ResponseWriter, r *http.Request) {
 	ip := getClientIP(r)
 	if ip == "" {
 		http.Error(w, "Wrong IP", http.StatusBadRequest)
 		return
 	}
-
-	processIP(ip, w)
+	processIP(ip, "80", "HTTP", w)
 }
 
 func handleAdd(w http.ResponseWriter, r *http.Request) {
@@ -94,43 +146,105 @@ func handleAdd(w http.ResponseWriter, r *http.Request) {
 		http.Error(w, "Wrong Body", http.StatusBadRequest)
 		return
 	}
-	ip := strings.TrimSpace(string(body))
-	if !isValidIP(ip) {
-		http.Error(w, "Wrong IP", http.StatusBadRequest)
+	parts := strings.Split(string(body), "|")
+	if len(parts) != 3 {
+		http.Error(w, "Wrong Body", http.StatusBadRequest)
 		return
 	}
-
-	processIP(ip, w)
+	ip, port, proto := parts[0], parts[1], parts[2]
+	processIP(ip, port, proto, w)
 }
 
-func processIP(ip string, w http.ResponseWriter) {
+func processIP(ip, port, proto string, w http.ResponseWriter) {
 	ipKey := ip + "/32"
-
 	if blocklistMode == "master" {
-		err := redisClient.HSet(ctx, hashName, ipKey, 1).Err()
-		if err != nil {
-			log.Printf("❌ Error writing to redis: %v", err)
-			http.Error(w, "Interner Fehler", http.StatusInternalServerError)
-			return
+		_ = redisClient.HSet(ctx, hashName, ipKey, 1).Err()
+		_ = redisClient.SAdd(ctx, "bl:manual:"+ipKey, port+"/"+proto).Err()
+		log.Printf("✅ IP %s saved with port %s/%s", ipKey, port, proto)
+		if w != nil {
+			w.WriteHeader(http.StatusServiceUnavailable)
+			w.Write([]byte("Temporary unavailable"))
 		}
-		log.Printf("✅ IP %s in saved to redis", ipKey)
-		w.WriteHeader(http.StatusServiceUnavailable)
-		w.Write([]byte("Temporary unavailable"))
 	} else {
-		// Slave: an Master weiterleiten
-		resp, err := http.Post(masterURL+"/add", "text/plain", bytes.NewBuffer([]byte(ip)))
+		payload := ip + "|" + port + "|" + proto
+		resp, err := http.Post(masterURL+"/add", "text/plain", bytes.NewBuffer([]byte(payload)))
 		if err != nil {
 			log.Printf("❌ Error relaying to Master: %v", err)
-			http.Error(w, "Error relaying", http.StatusBadGateway)
+			if w != nil {
+				http.Error(w, "Error relaying", http.StatusBadGateway)
+			}
 			return
 		}
 		defer resp.Body.Close()
-		w.WriteHeader(resp.StatusCode)
-		fmt.Println(resp.Body)
-		io.Copy(w, resp.Body)
+		if w != nil {
+			w.WriteHeader(resp.StatusCode)
+			io.Copy(w, resp.Body)
+		}
 	}
 }
 
+func handleMetrics(w http.ResponseWriter, r *http.Request) {
+	keys, _ := redisClient.HKeys(ctx, hashName).Result()
+	totalIPs := len(keys)
+	w.Header().Set("Content-Type", "text/plain")
+	w.Write([]byte(fmt.Sprintf("honeypod_blocked_ips_total %d\n", totalIPs)))
+
+	for _, ip := range keys {
+		ports, _ := redisClient.SMembers(ctx, "bl:manual:"+ip).Result()
+		for _, p := range ports {
+			parts := strings.Split(p, "/")
+			if len(parts) == 2 {
+				port, proto := parts[0], parts[1]
+				metricName := fmt.Sprintf("honeypod_port_hits{port=\"%s\",protocol=\"%s\"}", port, proto)
+				w.Write([]byte(metricName + " 1\n")) // hier 1 pro IP/Port-Protokoll
+			}
+		}
+	}
+}
+
+func handleDashboard(w http.ResponseWriter, r *http.Request) {
+	keys, _ := redisClient.HKeys(ctx, hashName).Result()
+
+	w.Header().Set("Content-Type", "text/html")
+	w.Write([]byte(`
+<!DOCTYPE html>
+<html lang="en">
+<head>
+  <meta charset="UTF-8">
+  <title>Honeypod Dashboard</title>
+  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.0/dist/css/bootstrap.min.css" rel="stylesheet">
+</head>
+<body class="bg-dark text-light">
+  <div class="container mt-4">
+    <h1 class="mb-4">Honeypod Dashboard</h1>
+    <table class="table table-dark table-striped">
+      <thead><tr><th>IP</th><th>Ports / Protocols</th></tr></thead>
+      <tbody>
+`))
+	for _, ip := range keys {
+		ports, _ := redisClient.SMembers(ctx, "bl:manual:"+ip).Result()
+		w.Write([]byte("<tr><td>" + ip + "</td><td>" + strings.Join(ports, ", ") + "</td></tr>"))
+	}
+	w.Write([]byte(`
+      </tbody>
+    </table>
+  </div>
+</body>
+</html>
+`))
+}
+
+func handleDashboardJSON(w http.ResponseWriter, r *http.Request) {
+	keys, _ := redisClient.HKeys(ctx, hashName).Result()
+	result := make(map[string][]string)
+	for _, ip := range keys {
+		ports, _ := redisClient.SMembers(ctx, "bl:manual:"+ip).Result()
+		result[ip] = ports
+	}
+	w.Header().Set("Content-Type", "application/json")
+	json.NewEncoder(w).Encode(result)
+}
+
 func getClientIP(r *http.Request) string {
 	xff := r.Header.Get("X-Forwarded-For")
 	if xff != "" {
@@ -140,12 +254,10 @@ func getClientIP(r *http.Request) string {
 			return ip
 		}
 	}
-
 	xrip := r.Header.Get("X-Real-Ip")
 	if xrip != "" && isValidIP(xrip) {
 		return xrip
 	}
-
 	host, _, err := net.SplitHostPort(r.RemoteAddr)
 	if err != nil {
 		return ""
@@ -159,3 +271,8 @@ func getClientIP(r *http.Request) string {
 func isValidIP(ip string) bool {
 	return net.ParseIP(ip) != nil
 }
+
+func portInt(port string) int {
+	p, _ := strconv.Atoi(port)
+	return p
+}