Add dns.server
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e8be61ece5
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39d3769df8
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USING: kernel
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combinators
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sequences
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math
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io.sockets
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unicode.case
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accessors
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combinators.cleave
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newfx
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dns ;
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IN: dns.server
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! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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: records ( -- vector ) V{ } ;
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! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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: filter-by-name ( records name -- records ) swap [ name>> = ] with filter ;
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! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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: {name-type-class} ( obj -- array )
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{ [ name>> >lower ] [ type>> ] [ class>> ] } <arr> ;
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: rr=query? ( obj obj -- ? ) [ {name-type-class} ] bi@ = ;
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! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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: matching-rrs ( query -- rrs ) records [ rr=query? ] with filter ;
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! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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: matching-rrs? ( query -- query rrs/f ? ) dup matching-rrs dup empty? not ;
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! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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: matching-cname? ( query -- query rr/f ? )
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dup clone CNAME >>type matching-rrs
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dup empty? [ drop f f ] [ 1st t ] if ;
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! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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DEFER: query->rrs
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: query-canonical ( query rr -- rrs )
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tuck [ clone ] [ rdata>> ] bi* >>name query->rrs prefix-on ;
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: query->rrs ( query -- rrs/f )
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{
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{ [ matching-rrs? ] [ nip ] }
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{ [ drop matching-cname? ] [ query-canonical ] }
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{ [ drop t ] [ drop f ] }
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}
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cond ;
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! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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: cdr-name ( name -- name ) dup CHAR: . index 1+ tail ;
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! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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: delegate-servers? ( name -- name rrs ? )
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dup NS IN query boa matching-rrs dup empty? not ;
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! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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: delegate-servers ( name -- rrs )
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{
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{ [ dup "" = ] [ drop { } ] }
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{ [ delegate-servers? ] [ nip ] }
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{ [ drop t ] [ cdr-name delegate-servers ] }
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}
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cond ;
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! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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: delegate-addresses ( rrs-ns -- rrs-a )
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[ rdata>> A IN query boa matching-rrs ] map concat ;
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! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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: have-delegates? ( query -- query rrs-ns ? )
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dup name>> delegate-servers dup empty? not ;
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! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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: fill-additional ( message -- message )
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dup authority-section>> delegate-addresses >>additional-section ;
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! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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: no-records-with-name? ( query -- query ? )
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dup name>> records [ name>> = ] with filter empty? ;
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! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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: find-answer ( message -- message )
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dup message-query ! message query
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{
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{ [ dup query->rrs dup ] [ nip >>answer-section 1 >>aa ] }
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{ [ drop have-delegates? ] [ nip >>authority-section fill-additional ] }
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{ [ drop no-records-with-name? ] [ drop NAME-ERROR >>rcode ] }
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{ [ drop t ] [ ] }
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}
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cond ;
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! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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: (socket) ( -- vec ) V{ f } ;
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: socket ( -- socket ) (socket) 1st ;
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: init-socket-on-port ( port -- )
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f swap <inet4> <datagram> 0 (socket) as-mutate ;
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: init-socket ( -- ) 53 init-socket-on-port ;
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! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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: loop ( -- )
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socket receive
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swap
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parse-message
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find-answer
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message->ba
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swap
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socket send
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loop ;
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! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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: start ( -- ) init-socket loop ;
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! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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MAIN: start
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