Come creare query dns in dns-python come dig (con la sezione record aggiuntivi)?

Question

Ho provando uso dns python e vogliono ottenere tutti i record con interrogazione ANY Tipo:

import dns.name 
import dns.message 
import dns.query 

domain = 'google.com' 
name_server = '8.8.8.8' 

domain = dns.name.from_text(domain) 
if not domain.is_absolute(): 
    domain = domain.concatenate(dns.name.root) 

request = dns.message.make_query(domain, dns.rdatatype.ANY) 

response = dns.query.udp(request, name_server) 
print response.answer 
print response.additional 
print response.authority 

ma tornare mi

[] 
[] 
[] 

Quando provo fare questa richiesta con :

$ dig @8.8.8.8 google.com -t ANY 

; <<>> DiG 9.9.2-P1 <<>> @8.8.8.8 google.com -t ANY 
; (1 server found) 
;; global options: +cmd 
;; Got answer: 
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 2848 
;; flags: qr rd ra; QUERY: 1, ANSWER: 25, AUTHORITY: 0, ADDITIONAL: 1 

;; OPT PSEUDOSECTION: 
; EDNS: version: 0, flags:; udp: 512 
;; QUESTION SECTION: 
;google.com.   IN ANY 

;; ANSWER SECTION: 
google.com.  299 IN A 173.194.40.14 
google.com.  299 IN A 173.194.40.1 
google.com.  299 IN A 173.194.40.7 
google.com.  299 IN A 173.194.40.4 
google.com.  299 IN A 173.194.40.3 
google.com.  299 IN A 173.194.40.0 
google.com.  299 IN A 173.194.40.8 
google.com.  299 IN A 173.194.40.6 
google.com.  299 IN A 173.194.40.5 
google.com.  299 IN A 173.194.40.2 
google.com.  299 IN A 173.194.40.9 
google.com.  299 IN AAAA 2a00:1450:4002:804::1000 
google.com.  21599 IN TYPE257 \# 23 0009697373756577696C6473796D616E7465632E636F6D 
google.com.  21599 IN TYPE257 \# 19 0005697373756573796D616E7465632E636F6D 
google.com.  21599 IN NS ns2.google.com. 
google.com.  21599 IN NS ns3.google.com. 
google.com.  599 IN MX 50 alt4.aspmx.l.google.com. 
google.com.  599 IN MX 10 aspmx.l.google.com. 
google.com.  3599 IN TXT "v=spf1 include:_spf.google.com ip4:216.73.93.70/31 ip4:216.73.93.72/31 ~all" 
google.com.  599 IN MX 20 alt1.aspmx.l.google.com. 
google.com.  21599 IN SOA ns1.google.com. dns-admin.google.com. 2013070800 7200 1800 1209600 300 
google.com.  599 IN MX 30 alt2.aspmx.l.google.com. 
google.com.  21599 IN NS ns1.google.com. 
google.com.  599 IN MX 40 alt3.aspmx.l.google.com. 
google.com.  21599 IN NS ns4.google.com. 

;; Query time: 52 msec 
;; SERVER: 8.8.8.8#53(8.8.8.8) 
;; WHEN: Tue Jul 16 18:23:46 2013 
;; MSG SIZE rcvd: 623 

Quando controllo le richieste con wireshark, ho trovato che e dns python avere diverse richieste:

:

0000 c8 64 c7 3a e3 40 50 46 5d a5 70 99 08 00 45 00 .d.:.@PF ].p...E. 
0010 00 43 9f 60 00 00 40 11 09 8f c0 a8 01 03 08 08 .C.`..@. ........ 
0020 08 08 8e 9e 00 35 00 2f 71 cf ef 49 01 20 00 01 .....5./ q..I. .. 
0030 00 00 00 00 00 01 06 67 6f 6f 67 6c 65 03 63 6f .......g oogle.co 
0040 6d 00 00 ff 00 01 00 00 29 10 00 00 00 00 00 00 m.......)....... 
0050 00     

dns python:

0000 c8 64 c7 3a e3 40 50 46 5d a5 70 99 08 00 45 00 .d.:.@PF ].p...E. 
0010 00 38 00 00 40 00 40 11 68 fa c0 a8 01 03 08 08 .8..@.@. h....... 
0020 08 08 b8 62 00 35 00 24 23 6b 3d 31 01 00 00 01 ...b.5.$ #k=1.... 
0030 00 00 00 00 00 00 06 67 6f 6f 67 6c 65 03 63 6f .......g oogle.co 
0040 6d 00 00 ff 00 01         m.....   

Per la sezione query DNS:

hanno AD bit: Set bandiera:

002C-002D: 01 20 per e 01 00 per dns python

e questa sezione Additional records che, fatta eccezione per dns-python:

0046-0050: 00 00 29 10 00 00 00 00 00 00 00.

Questo effettivo anche non solo per google.com anche per logitech.com mayby ​​altro.

Quindi, come posso effettuare richieste con dns python come con questa sezione aggiuntiva?

Answer 1

ho trovato la soluzione, ho fatto richiesta come :

import dns.name 
import dns.message 
import dns.query 
import dns.flags 

domain = 'google.com' 
name_server = '8.8.8.8' 
ADDITIONAL_RDCLASS = 65535 

domain = dns.name.from_text(domain) 
if not domain.is_absolute(): 
    domain = domain.concatenate(dns.name.root) 

request = dns.message.make_query(domain, dns.rdatatype.ANY) 
request.flags |= dns.flags.AD 
request.find_rrset(request.additional, dns.name.root, ADDITIONAL_RDCLASS, 
        dns.rdatatype.OPT, create=True, force_unique=True) 
response = dns.query.udp(request, name_server) 


print response.answer 
print response.additional 
print response.authority 

Con ADDITIONAL_RDCLASS = 4096 come tutto il lavoro troppo, ma ho impostato pieno per essere al sicuro.

e funziona piuttosto bene.