107 lines
		
	
	
		
			2.9 KiB
		
	
	
	
		
			Factor
		
	
	
			
		
		
	
	
			107 lines
		
	
	
		
			2.9 KiB
		
	
	
	
		
			Factor
		
	
	
! Copyright (C) 2008 Doug Coleman.
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! See http://factorcode.org/license.txt for BSD license.
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USING: accessors arrays classes.singleton combinators
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continuations io io.encodings.binary io.encodings.utf8
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io.files io.pathnames io.sockets kernel io.streams.duplex math
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math.parser sequences splitting namespaces strings fry ftp
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ftp.client.listing-parser urls ;
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IN: ftp.client
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: (ftp-response-code) ( str -- n )
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    3 head string>number ;
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: ftp-response-code ( string -- n/f )
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    dup fourth CHAR: - = [ drop f ] [ (ftp-response-code) ] if ;
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: read-response-loop ( ftp-response -- ftp-response )
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    readln
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    [ add-response-line ] [ ftp-response-code ] bi
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    over n>> = [ read-response-loop ] unless ;
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: read-response ( -- ftp-response )
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    <ftp-response> readln
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    [ (ftp-response-code) >>n ]
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    [ add-response-line ]
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    [ fourth CHAR: - = ] tri
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    [ read-response-loop ] when ;
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ERROR: ftp-error got expected ;
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: ftp-assert ( ftp-response n -- )
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    2dup [ n>> ] dip = [ 2drop ] [ ftp-error ] if ;
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: ftp-command ( string -- ftp-response )
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    ftp-send read-response ;
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: ftp-user ( url -- ftp-response )
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    username>> "USER " prepend ftp-command ;
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: ftp-password ( url -- ftp-response )
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    password>> "PASS " prepend ftp-command ;
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: ftp-cwd ( directory -- ftp-response )
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    "CWD " prepend ftp-command ;
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: ftp-retr ( filename -- ftp-response )
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    "RETR " prepend ftp-command ;
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: ftp-set-binary ( -- ftp-response ) "TYPE I" ftp-command ;
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: ftp-pwd ( -- ftp-response ) "PWD" ftp-command ;
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: ftp-list ( -- )
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    "LIST" ftp-command 150 ftp-assert ;
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: ftp-quit ( -- ftp-response ) "QUIT" ftp-command ;
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: ftp-epsv ( -- ftp-response )
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    "EPSV" ftp-command dup 229 ftp-assert ;
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: parse-epsv ( ftp-response -- port )
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    strings>> first "|" split 2 tail* first string>number ;
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: open-passive-client ( url protocol -- stream )
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    [ host>> ftp-epsv parse-epsv <inet> ] dip <client> drop ;
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: list ( url -- ftp-response )
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    utf8 open-passive-client
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    ftp-list
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    lines
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    <ftp-response> swap >>strings
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    read-response 226 ftp-assert
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    parse-list ;
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: (ftp-get) ( url path -- )
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    [ binary open-passive-client ] dip
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    [ ftp-retr 150 ftp-assert drop ]
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    [ binary <file-writer> stream-copy ] 2bi
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    read-response 226 ftp-assert ;
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: ftp-login ( url -- )
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    read-response 220 ftp-assert
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    [ ftp-user 331 ftp-assert ]
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    [ ftp-password 230 ftp-assert ] bi
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    ftp-set-binary 200 ftp-assert ;
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: ftp-connect ( url -- stream )
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    [ host>> ] [ port>> ] bi <inet> utf8 <client> drop ;
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: with-ftp-client ( url quot -- )
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    [ [ ftp-connect ] keep ] dip
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    '[ _ [ ftp-login ] _ bi ftp-quit drop ] with-stream ; inline
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: ensure-login ( url -- url )
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    dup username>> [
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        "anonymous" >>username
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        "ftp-client@factorcode.org" >>password
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    ] unless ;
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: >ftp-url ( url -- url' ) >url ensure-port ensure-login ;
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: ftp-get ( url -- )
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    >ftp-url [
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        dup path>>
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        [ nip parent-directory ftp-cwd drop ]
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        [ file-name (ftp-get) ] 2bi
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    ] with-ftp-client ;
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