fix: restore listener edit actions and validate required fields

internal/handler/c2.go

@@ -177,6 +177,15 @@ func (h *C2Handler) UpdateListener(c *gin.Context) {
 		return
 	}
 
+	if strings.TrimSpace(req.Name) == "" {
+		c.JSON(http.StatusBadRequest, gin.H{"error": "listener name is required"})
+		return
+	}
+	if err := c2.SafeBindPort(req.BindPort); err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		return
+	}
+
 	// 若监听器在运行，不能修改关键字段
 	if h.mgr().IsListenerRunning(id) {
 		if req.BindHost != listener.BindHost || req.BindPort != listener.BindPort {

internal/handler/c2_listener_validation_test.go

@@ -0,0 +1,55 @@
+package handler
+
+import (
+	"bytes"
+	"fmt"
+	"net/http"
+	"net/http/httptest"
+	"path/filepath"
+	"testing"
+	"time"
+
+	"cyberstrike-ai/internal/c2"
+	"cyberstrike-ai/internal/database"
+	"github.com/gin-gonic/gin"
+	"go.uber.org/zap"
+)
+
+func TestC2ListenerEditRejectsInvalidFieldsWithoutSaving(t *testing.T) {
+	db, err := database.NewDB(filepath.Join(t.TempDir(), "listener.db"), zap.NewNop())
+	if err != nil {
+		t.Fatal(err)
+	}
+	t.Cleanup(func() { _ = db.Close() })
+	original := &database.C2Listener{ID: "listener", Name: "original", Type: "http_beacon", BindHost: "127.0.0.1", BindPort: 8080, Status: "stopped", CreatedAt: time.Now()}
+	if err := db.CreateC2Listener(original); err != nil {
+		t.Fatal(err)
+	}
+	h := NewC2Handler(c2.NewManager(db, zap.NewNop(), t.TempDir()), zap.NewNop())
+	r := gin.New()
+	r.PUT("/listeners/:id", h.UpdateListener)
+	for _, tc := range []struct {
+		name   string
+		port   int
+		status int
+	}{{"", 8080, 400}, {"  ", 8080, 400}, {"changed", 0, 400}, {"changed", 65536, 400}, {"changed", 8081, 200}} {
+		body := fmt.Sprintf(`{"name":%q,"bind_host":"127.0.0.1","bind_port":%d,"remark":"new remark"}`, tc.name, tc.port)
+		req := httptest.NewRequest(http.MethodPut, "/listeners/listener", bytes.NewBufferString(body))
+		req.Header.Set("Content-Type", "application/json")
+		w := httptest.NewRecorder()
+		r.ServeHTTP(w, req)
+		if w.Code != tc.status {
+			t.Fatalf("status %d: %s", w.Code, w.Body.String())
+		}
+		saved, err := db.GetC2Listener("listener")
+		if err != nil {
+			t.Fatal(err)
+		}
+		if tc.status == 400 && (saved.Name != "original" || saved.BindPort != 8080 || saved.Remark != "") {
+			t.Fatalf("invalid request saved fields: %#v", saved)
+		}
+		if tc.status == 200 && (saved.Name != "changed" || saved.BindPort != 8081 || saved.Remark != "new remark") {
+			t.Fatalf("valid edit not saved: %#v", saved)
+		}
+	}
+}