feat: complete basic functions

Support http,dns and mysql connection. Support custom http, dns response. Support dns rebinding.
Support mysql load local files and jdbc deserialize exploit.

internal/qqwry/wry.go

@@ -0,0 +1,47 @@
+package qqwry
+
+import (
+	"os"
+	"sync"
+	"time"
+
+	"github.com/sinlov/qqwry-golang/qqwry"
+	log "unknwon.dev/clog/v2"
+)
+
+var wry *qqwry.QQwry
+var once sync.Once
+
+func init() {
+	info, err := os.Stat("qqwry.dat")
+	if err != nil {
+		if os.IsNotExist(err) {
+			err := download()
+			if err != nil {
+				log.Error("Download qqwry.dat failed, caused by:%v, recommend to download it by yourself otherwise the `IpArea` will be null", err.Error())
+			}
+		}
+	} else if info.ModTime().Sub(time.Now()) > 5*24*time.Hour {
+		log.Info("Updating qqwry.dat...")
+		err := download()
+		if err != nil {
+			log.Warn("Update qqwry.dat failed, please download qqwry.dat by yourself")
+		}
+	}
+}
+
+func GetQQWry() *qqwry.QQwry {
+	once.Do(func() {
+		qqwry.DatData.FilePath = "qqwry.dat"
+		init := qqwry.DatData.InitDatFile()
+		if v, ok := init.(error); ok {
+			if v != nil {
+				log.Error("qqwry init failed")
+				wry = nil
+			}
+		}
+		wry = qqwry.NewQQwry()
+	})
+
+	return wry
+}