希望增加black_hole通过引用文件的方式应答

[wukecheng]

希望添加的功能

更改cloudflare的应答ip

• tag: sequence_change_cloudflare
  type: sequence
  args:
  • exec: black_hole 47.74.12.137 47.74.9.123 47.245.14.160
    #- exec: black_hole $ip_cloudflare_fast #现在不能通过这种方式应答,希望增加下

[qingtian110]

似乎没有必要？因为 #717 ，所以即使支持 - exec: black_hole $ip_cloudflare_fast 且里面填写多个IP进去，真实效果只是 - exec: black_hole 47.74.12.137 首个 IP 有效。

[Journalist-HK]

似乎没有必要？因为 #717 ，所以即使支持 - exec: black_hole $ip_cloudflare_fast 且里面填写多个IP进去，真实效果只是 - exec: black_hole 47.74.12.137 首个 IP 有效。

mosdns/plugin/executable/black_hole/black_hole.go

Lines 77 to 123 in a281fdb

 // Response returns a response with given ips if query has corresponding qtypes. 
 // Otherwise, it returns nil. 
 func (b *BlackHole) Response(q *dns.Msg) *dns.Msg { 
 	if len(q.Question) != 1 { 
 		return nil 
 	} 
  
 	qName := q.Question[0].Name 
 	qtype := q.Question[0].Qtype 
  
 	switch { 
 	case qtype == dns.TypeA && len(b.ipv4) > 0: 
 		r := new(dns.Msg) 
 		r.SetReply(q) 
 		for _, addr := range b.ipv4 { 
 			rr := &dns.A{ 
 				Hdr: dns.RR_Header{ 
 					Name:   qName, 
 					Rrtype: dns.TypeA, 
 					Class:  dns.ClassINET, 
 					Ttl:    300, 
 				}, 
 				A: addr.AsSlice(), 
 			} 
 			r.Answer = append(r.Answer, rr) 
 		} 
 		return r 
  
 	case qtype == dns.TypeAAAA && len(b.ipv6) > 0: 
 		r := new(dns.Msg) 
 		r.SetReply(q) 
 		for _, addr := range b.ipv6 { 
 			rr := &dns.AAAA{ 
 				Hdr: dns.RR_Header{ 
 					Name:   qName, 
 					Rrtype: dns.TypeAAAA, 
 					Class:  dns.ClassINET, 
 					Ttl:    300, 
 				}, 
 				AAAA: addr.AsSlice(), 
 			} 
 			r.Answer = append(r.Answer, rr) 
 		} 
 		return r 
 	} 
 	return nil 
 } 

我的测试结果是所有的 IP 都有效

config:

  - tag: blackhole_cloudflare
    type: sequence
    args:
      - exec: black_hole 104.17.19.131 104.17.28.149 172.64.34.51 172.64.52.29 # best_cloudflare_ip
      - exec: ttl 3600-0
      - exec: jump has_resp_sequence

root@OpenWrt:~# nslookup api.cloudflare.com
Server:         127.0.0.1
Address:        127.0.0.1:53

Non-authoritative answer:
Name:   api.cloudflare.com
Address: 104.17.19.131
Name:   api.cloudflare.com
Address: 172.64.34.51
Name:   api.cloudflare.com
Address: 172.64.52.29
Name:   api.cloudflare.com
Address: 104.17.28.149

Non-authoritative answer:

root@OpenWrt:~# nslookup download.yzuu.cf
Server:         127.0.0.1
Address:        127.0.0.1:53

Non-authoritative answer:
Name:   download.yzuu.cf
Address: 172.64.34.51
Name:   download.yzuu.cf
Address: 104.17.28.149
Name:   download.yzuu.cf
Address: 172.64.52.29
Name:   download.yzuu.cf
Address: 104.17.19.131

Non-authoritative answer:

root@OpenWrt:~# ping api.cloudflare.com
PING api.cloudflare.com (104.17.28.149): 56 data bytes
64 bytes from 104.17.28.149: seq=0 ttl=55 time=152.764 ms
64 bytes from 104.17.28.149: seq=1 ttl=55 time=151.667 ms
64 bytes from 104.17.28.149: seq=2 ttl=55 time=152.536 ms
64 bytes from 104.17.28.149: seq=3 ttl=55 time=153.357 ms
^C
--- api.cloudflare.com ping statistics ---
4 packets transmitted, 4 packets received, 0% packet loss
round-trip min/avg/max = 151.667/152.581/153.357 ms
root@OpenWrt:~# ping download.yzuu.cf
PING download.yzuu.cf (172.64.34.51): 56 data bytes
64 bytes from 172.64.34.51: seq=0 ttl=55 time=155.588 ms
64 bytes from 172.64.34.51: seq=1 ttl=55 time=151.586 ms
64 bytes from 172.64.34.51: seq=2 ttl=55 time=151.251 ms
64 bytes from 172.64.34.51: seq=3 ttl=55 time=151.429 ms
^C
--- download.yzuu.cf ping statistics ---
4 packets transmitted, 4 packets received, 0% packet loss
round-trip min/avg/max = 151.251/152.463/155.588 ms