initial commit

methods/test_methods.go

@@ -0,0 +1,96 @@
+package methods
+
+import (
+	"errors"
+	"fmt"
+	"fpdns_client/utils"
+	"strconv"
+	"time"
+
+	"github.com/miekg/dns"
+)
+
+func ProbeStart(addr string, sld string) (int, error) {
+	time_now := strconv.FormatInt(time.Now().Unix(), 10)
+	domain := dns.Fqdn("start-" + time_now + "." + sld)
+	res, err := utils.DNSQuery(addr, domain, false, 1, 1, false)
+	if err == nil {
+		if len(res.Answer) == 1 {
+			if a, ok := res.Answer[0].(*dns.A); ok {
+				ip_str := a.A.String()
+				ip_val, _ := utils.IPv4ToInt(ip_str)
+				return int(ip_val), nil
+			}
+		}
+	} else {
+		return 0, err
+	}
+	return 0, errors.New("wrong token response")
+}
+
+func InitProbe(addr string, token int, sld string) error {
+	time_now := strconv.FormatInt(time.Now().Unix(), 10)
+	domain := dns.Fqdn("init-" + time_now + "-" + strconv.Itoa(token) + "." + sld)
+	res, err := utils.DNSQuery(addr, domain, true, 1, 1, false)
+	if err != nil {
+		return err
+	} else {
+		if len(res.Answer) == 1 {
+			if a, ok := res.Answer[0].(*dns.A); ok {
+				ip_str := a.A.String()
+				if ip_str == "200.200.200.200" {
+					return nil
+				}
+			} else {
+				return errors.New("invalid Reply Code")
+			}
+		}
+	}
+	return errors.New("init query failure")
+}
+
+func ProbeTerminate(addr string, token int, sld string) error {
+	time_now := strconv.FormatInt(time.Now().Unix(), 10)
+	domain := dns.Fqdn("end-" + time_now + "-" + strconv.Itoa(token) + "." + sld)
+	res, err := utils.DNSQuery(addr, domain, false, 1, 1, false)
+	if err != nil {
+		return err
+	} else {
+		if len(res.Answer) == 1 {
+			if a, ok := res.Answer[0].(*dns.A); ok {
+				ip_str := a.A.String()
+				if ip_str == "200.200.200.200" {
+					return nil
+				}
+			} else {
+				return errors.New("invalid Reply Code")
+			}
+		}
+	}
+	return errors.New("terminate query failure")
+}
+
+func BehaviorTest(target string, server string, api_port string, sld string) (string, error) {
+	target_addr := target + ":53"
+	server_addr := server + ":53"
+	result_addr := server + ":" + api_port
+	token, err := ProbeStart(server_addr, sld)
+	if err != nil {
+		return "", err
+	}
+	err = InitProbe(target_addr, token, sld)
+	if err != nil {
+		return "", err
+	}
+	err = ProbeTerminate(server_addr, token, sld)
+	if err != nil {
+		return "", err
+	}
+	data, err := utils.GetResult(result_addr, token)
+	if err != nil {
+		return "", err
+	}
+	json_str, _ := utils.OutputJson(data)
+	fmt.Println(json_str)
+	return "", nil
+}