gfwleak/modikai-echodns
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little changes

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This commit is contained in:
MDK
2023-06-26 16:12:05 +08:00
parent 1a81d29eae
commit 0671552aad
1 changed files with 14 additions and 14 deletions
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28
echodns.go
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@@ -2,11 +2,11 @@ package main
import ( import (
"fmt" "fmt"
"math/rand"
"net" "net"
"strconv" "strconv"
"strings" "strings"
"time" "time"
"math/rand"
"github.com/miekg/dns" "github.com/miekg/dns"
) )
@@ -23,8 +23,8 @@ func strategyMaker(name string, qtype uint16) uint16 {
} else if strings.Contains(subdomain, "echo") { } else if strings.Contains(subdomain, "echo") {
return 4 // basic echodns return 4 // basic echodns
} else if strings.Contains(subdomain, "ttl") { } else if strings.Contains(subdomain, "ttl") {
return 5 // ttl test return 5 // ttl test
} }
} }
return 0 return 0
} }
@@ -38,9 +38,9 @@ func InttoIPv4(n uint32) net.IP {
} }
func TtlParser(domain string) uint32 { func TtlParser(domain string) uint32 {
subdomain := strings.ToLower(strings.Split(domain, ".")[0]) subdomain := strings.ToLower(strings.Split(domain, ".")[0])
ttl, _ := strconv.Atoi(strings.Split(subdomain, "-")[0]) ttl, _ := strconv.Atoi(strings.Split(subdomain, "-")[0])
return uint32(ttl) return uint32(ttl)
} }
func handleReflect(w dns.ResponseWriter, r *dns.Msg) { func handleReflect(w dns.ResponseWriter, r *dns.Msg) {
@@ -52,7 +52,7 @@ func handleReflect(w dns.ResponseWriter, r *dns.Msg) {
m := new(dns.Msg) m := new(dns.Msg)
m.SetReply(r) m.SetReply(r)
m.Compress = true m.Compress = true
m.Authoritative = true m.Authoritative = true
if addr, ok := w.RemoteAddr().(*net.UDPAddr); ok { if addr, ok := w.RemoteAddr().(*net.UDPAddr); ok {
ip = addr.IP ip = addr.IP
} }
@@ -95,14 +95,14 @@ func handleReflect(w dns.ResponseWriter, r *dns.Msg) {
A: ip, A: ip,
} }
m.Answer = append(m.Answer, a) m.Answer = append(m.Answer, a)
case 5: case 5:
query_ttl := TtlParser(name) query_ttl := TtlParser(name)
//fmt.Println(query_ttl) //fmt.Println(query_ttl)
a := &dns.A{ a := &dns.A{
Hdr: dns.RR_Header{Name: name, Rrtype: dns.TypeA, Class: dns.ClassINET, Ttl: query_ttl}, Hdr: dns.RR_Header{Name: name, Rrtype: dns.TypeA, Class: dns.ClassINET, Ttl: query_ttl},
A: ip, A: ip,
} }
m.Answer = append(m.Answer, a) m.Answer = append(m.Answer, a)
case 0: case 0:
return return
} }