query command added

2023-10-21 18:53:38 +08:00
parent 4c63d78e4e
commit eb65009ae2
6 changed files with 128 additions and 28 deletions
--- a/cmd/query.go
+++ b/cmd/query.go
@@ -0,0 +1,106 @@
+package cmd
+
+import (
+	"dtool/utils"
+	"fmt"
+	"strconv"
+	"strings"
+	"sync"
+	"time"
+
+	"github.com/spf13/cobra"
+)
+
+// input parameters
+// var query_target string
+var query_port string
+var query_name string
+var query_type uint16
+var query_class uint16
+var query_rate int
+var query_packets int
+var query_random_prefix bool
+
+/*
+DNS请求测试功能，可设置参数包括域名（随机前缀），资源记录type/class，请求速率，请求数量
+*/
+var queryCmd = &cobra.Command{
+	Use:   "query",
+	Short: "",
+	Long:  "",
+	Run:   queryTest,
+}
+
+func concurrent_request(ip, domain, port string, qtype, qclass uint16, result chan int, wg *sync.WaitGroup) {
+	wg.Add(1)
+	res, err := utils.SendQuery(ip, domain, port, qtype, qclass)
+	if err != nil {
+		result <- (-1)
+		//fmt.Println(err)
+	} else {
+		rcode := utils.ParseRcode(res)
+		result <- rcode
+	}
+	wg.Done()
+}
+
+func response_stat(stat []int, result chan int, wg *sync.WaitGroup) {
+	wg.Add(1)
+	defer wg.Done()
+	for {
+		if v, ok := <-result; ok {
+			switch v {
+			case 0:
+				stat[0]++
+			case 2:
+				stat[1]++
+			case 3:
+				stat[2]++
+			case -1:
+				stat[3]++
+			default:
+				stat[4]++
+			}
+		} else {
+			break
+		}
+	}
+}
+
+func queryTest(cmd *cobra.Command, args []string) {
+	var wg1 sync.WaitGroup
+	var wg2 sync.WaitGroup
+	result := make(chan int)
+	stat := make([]int, 5)
+	if len(args) == 1 {
+		if utils.IsValidIP(args[0]) {
+			timestamp := strconv.FormatInt(time.Now().Unix(), 10)
+			go response_stat(stat, result, &wg2)
+			for i := 0; i < query_packets; i++ {
+				var qname string
+				if query_random_prefix {
+					qname = strings.Join([]string{timestamp, strconv.Itoa(i)}, "-") + query_name
+				} else {
+					qname = query_name
+				}
+				go concurrent_request(args[0], qname, query_port, query_type, query_class, result, &wg1)
+				time.Sleep(time.Second / time.Duration(query_rate))
+			}
+			wg1.Wait()
+			close(result)
+			wg2.Wait()
+			fmt.Printf("total: %v noerr: %v servfail: %v nx: %v error: %v other: %v\n", query_packets, stat[0], stat[1], stat[2], stat[3], stat[4])
+		}
+	}
+}
+
+func init() {
+	queryCmd.Flags().BoolVarP(&query_random_prefix, "random", "R", false, "random query name")
+	queryCmd.Flags().StringVarP(&query_port, "port", "p", "53", "query target port")
+	queryCmd.Flags().StringVarP(&query_name, "name", "d", "example.com", "query name in DNS requests")
+	queryCmd.Flags().Uint16VarP(&query_type, "type", "t", 1, "target record type")
+	queryCmd.Flags().Uint16VarP(&query_class, "class", "c", 1, "target record class")
+	queryCmd.Flags().IntVarP(&query_rate, "rate", "r", 10, "request rate (packets per second)")
+	queryCmd.Flags().IntVarP(&query_packets, "packets", "n", 100, "total request number")
+	rootCmd.AddCommand(queryCmd)
+}