Add dns.recursive for recursive queries
Eduardo Cavazos
parent
e14a9ec0fb
commit
5a2ff64c3f
|
|
@ -0,0 +1,182 @@
|
|||
|
||||
USING: kernel continuations
|
||||
combinators
|
||||
sequences
|
||||
random
|
||||
unicode.case
|
||||
accessors symbols
|
||||
combinators.lib combinators.cleave
|
||||
newfx
|
||||
dns dns.cache ;
|
||||
|
||||
IN: dns.recursive
|
||||
|
||||
! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
|
||||
|
||||
: root-dns-servers ( -- servers )
|
||||
{
|
||||
"192.5.5.241"
|
||||
"192.112.36.4"
|
||||
"128.63.2.53"
|
||||
"192.36.148.17"
|
||||
"192.58.128.30"
|
||||
"193.0.14.129"
|
||||
"199.7.83.42"
|
||||
"202.12.27.33"
|
||||
"198.41.0.4"
|
||||
} ;
|
||||
|
||||
! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
|
||||
|
||||
: cache-message ( message -- message )
|
||||
dup dup rcode>> NAME-ERROR =
|
||||
[
|
||||
[ question-section>> 1st ]
|
||||
[ authority-section>> [ type>> SOA = ] filter random ttl>> ]
|
||||
bi
|
||||
cache-nx
|
||||
]
|
||||
[
|
||||
{
|
||||
[ answer-section>> cache-add-rrs ]
|
||||
[ authority-section>> cache-add-rrs ]
|
||||
[ additional-section>> cache-add-rrs ]
|
||||
}
|
||||
cleave
|
||||
]
|
||||
if ;
|
||||
|
||||
! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
|
||||
|
||||
: query->message ( query -- message ) <query-message> ;
|
||||
|
||||
! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
|
||||
|
||||
: {name-type-class} ( obj -- seq )
|
||||
[ name>> >lower ] [ type>> ] [ class>> ] tri {3} ;
|
||||
|
||||
: rr=query? ( rr query -- ? ) [ {name-type-class} ] bi@ = ;
|
||||
|
||||
: rr-filter ( rrs query -- rrs ) [ rr=query? ] curry filter ;
|
||||
|
||||
! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
|
||||
|
||||
: message-query ( message -- query ) question-section>> 1st ;
|
||||
|
||||
! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
|
||||
|
||||
: answer-hits ( message -- rrs )
|
||||
[ answer-section>> ] [ message-query ] bi rr-filter ;
|
||||
|
||||
! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
|
||||
|
||||
: name-hits ( message -- rrs )
|
||||
[ answer-section>> ] [ message-query clone A >>type ] bi rr-filter ;
|
||||
|
||||
: cname-hits ( message -- rrs )
|
||||
[ answer-section>> ] [ message-query clone CNAME >>type ] bi rr-filter ;
|
||||
|
||||
! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
|
||||
|
||||
: authority-hits ( message -- rrs )
|
||||
authority-section>> [ type>> NS = ] filter ;
|
||||
|
||||
! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
|
||||
|
||||
SYMBOLS: ANSWERED NO-NAME-SERVERS UNCLASSIFIED ;
|
||||
|
||||
: classify-message ( message -- symbol )
|
||||
{
|
||||
{ [ dup rcode>> NAME-ERROR = ] [ drop NAME-ERROR ] }
|
||||
{ [ dup rcode>> SERVER-FAILURE = ] [ drop SERVER-FAILURE ] }
|
||||
{ [ dup answer-hits empty? not ] [ drop ANSWERED ] }
|
||||
{ [ dup cname-hits empty? not ] [ drop CNAME ] }
|
||||
{ [ dup authority-hits empty? ] [ drop NO-NAME-SERVERS ] }
|
||||
{ [ t ] [ drop UNCLASSIFIED ] }
|
||||
}
|
||||
cond ;
|
||||
|
||||
! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
|
||||
|
||||
DEFER: name->ip
|
||||
|
||||
! : name->ip/f ( name -- ip/f ) [ name->ip ] [ drop f ] recover ;
|
||||
|
||||
! : extract-ns-ips ( message -- ips )
|
||||
! authority-hits [ rdata>> name->ip/f ] map [ ] filter ;
|
||||
|
||||
: extract-ns-ips ( message -- ips )
|
||||
authority-hits [ rdata>> name->ip ] map [ ] filter ;
|
||||
|
||||
! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
|
||||
|
||||
: recursive-query ( query servers -- message )
|
||||
dup random ! query servers server
|
||||
pick query->message 0 >>rd ! query servers server message
|
||||
over ask-server ! query servers server message
|
||||
cache-message ! query servers server message
|
||||
dup classify-message ! query servers server message sym
|
||||
{
|
||||
{ NAME-ERROR [ -roll 3drop ] }
|
||||
{ ANSWERED [ -roll 3drop ] }
|
||||
{ CNAME [ -roll 3drop ] }
|
||||
{ NO-NAME-SERVERS [ -roll 3drop ] }
|
||||
{
|
||||
SERVER-FAILURE
|
||||
[
|
||||
-roll ! message query servers server
|
||||
remove ! message query servers
|
||||
dup empty?
|
||||
[ 2drop ]
|
||||
[ rot drop recursive-query ]
|
||||
if
|
||||
]
|
||||
}
|
||||
[ ! query servers server message sym
|
||||
drop nip nip ! query message
|
||||
extract-ns-ips ! query ips
|
||||
recursive-query
|
||||
]
|
||||
}
|
||||
case ;
|
||||
|
||||
! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
|
||||
|
||||
: canonical/cache ( name -- name )
|
||||
dup CNAME IN query boa cache-get dup [ nip 1st rdata>> ] [ drop ] if ;
|
||||
|
||||
: name->ip/cache ( name -- ip/f )
|
||||
canonical/cache
|
||||
A IN query boa cache-get dup [ random rdata>> ] [ ] if ;
|
||||
|
||||
! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
|
||||
|
||||
: name-hits? ( message -- message ? ) dup name-hits empty? not ;
|
||||
: cname-hits? ( message -- message ? ) dup cname-hits empty? not ;
|
||||
|
||||
: name->ip/server ( name -- ip-or-f )
|
||||
A IN query boa root-dns-servers recursive-query ! message
|
||||
{
|
||||
{ [ name-hits? ] [ name-hits random rdata>> ] }
|
||||
{ [ cname-hits? ] [ cname-hits random rdata>> name->ip ] }
|
||||
{ [ t ] [ drop f ] }
|
||||
}
|
||||
cond ;
|
||||
|
||||
! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
|
||||
|
||||
! : name->ip ( name -- ip )
|
||||
! { [ name->ip/cache ] [ name->ip/server ] [ name-error ] } 1|| ;
|
||||
|
||||
: name->ip ( name -- ip )
|
||||
dup name->ip/cache dup
|
||||
[ nip ]
|
||||
[
|
||||
drop dup name->ip/server dup
|
||||
[ nip ]
|
||||
[ drop name-error ]
|
||||
if
|
||||
]
|
||||
if ;
|
||||
|
||||
! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
|
||||
Loading…
Reference in New Issue