1 ! Copyright (C) 2005, 2008 Slava Pestov.
2 ! See http://factorcode.org/license.txt for BSD license.
3 USING: accessors assocs kernel math math.parser namespaces make
4 sequences io io.sockets io.streams.string io.files io.timeouts
5 strings splitting calendar continuations accessors vectors
6 math.order hashtables byte-arrays prettyprint destructors
13 fry debugger summary ascii urls urls.encoding present
17 : write-request-line ( request -- request )
20 [ url>> relative-url present write bl ]
21 [ "HTTP/" write version>> write crlf ]
24 : url-host ( url -- string )
25 [ host>> ] [ port>> ] bi dup "http" protocol-port =
26 [ drop ] [ ":" swap number>string 3append ] if ;
28 : write-request-header ( request -- request )
29 dup header>> >hashtable
30 over url>> host>> [ over url>> url-host "host" pick set-at ] when
32 [ raw>> length "content-length" pick set-at ]
33 [ content-type>> "content-type" pick set-at ]
36 over cookies>> [ unparse-cookie "cookie" pick set-at ] unless-empty
39 GENERIC: >post-data ( object -- post-data )
41 M: post-data >post-data ;
43 M: string >post-data "application/octet-stream" <post-data> ;
45 M: byte-array >post-data "application/octet-stream" <post-data> ;
47 M: assoc >post-data assoc>query "application/x-www-form-urlencoded" <post-data> ;
51 : unparse-post-data ( request -- request )
52 [ >post-data ] change-post-data ;
54 : write-post-data ( request -- request )
55 dup method>> "POST" = [ dup post-data>> raw>> write ] when ;
57 : write-request ( request -- )
65 : read-response-line ( response -- response )
66 read-crlf parse-response-line first3
67 [ >>version ] [ >>code ] [ >>message ] tri* ;
69 : read-response-header ( response -- response )
71 dup "set-cookie" header parse-set-cookie >>cookies
72 dup "content-type" header [
75 [ >>content-charset ] bi*
78 : read-response ( -- response )
81 read-response-header ;
85 ERROR: too-many-redirects ;
87 M: too-many-redirects summary
89 [ "Redirection limit of " % max-redirects # " exceeded" % ] "" make ;
93 DEFER: (with-http-request)
97 : redirect-url ( request url -- request )
98 '[ _ >url derive-url ensure-port ] change-url ;
100 : redirect? ( response -- ? )
101 code>> 300 399 between? ;
103 : do-redirect ( quot: ( chunk -- ) response -- response )
105 redirects get max-redirects < [
107 swap "location" header redirect-url
108 "GET" >>method swap (with-http-request)
109 ] [ too-many-redirects ] if ; inline recursive
111 : read-chunk-size ( -- n )
112 read-crlf ";" split1 drop [ blank? ] trim-right
113 hex> [ "Bad chunk size" throw ] unless* ;
115 : read-chunked ( quot: ( chunk -- ) -- )
116 read-chunk-size dup zero?
118 read [ swap call ] [ drop ] 2bi
119 read-crlf B{ } assert= read-chunked
120 ] if ; inline recursive
122 : read-unchunked ( quot: ( chunk -- ) -- )
123 8192 read-partial dup [
124 [ swap call ] [ drop read-unchunked ] 2bi
125 ] [ 2drop ] if ; inline recursive
127 : read-response-body ( quot response -- )
129 "transfer-encoding" header "chunked" =
130 [ read-chunked ] [ read-unchunked ] if ; inline
132 : <request-socket> ( -- stream )
133 request get url>> url-addr ascii <client> drop
134 1 minutes over set-timeout ;
136 : (with-http-request) ( request quot: ( chunk -- ) -- response )
142 [ request get write-request ]
146 read-response dup redirect? [ t ] [
148 [ read-response-body ]
155 [ do-redirect ] [ nip ] if
156 ] with-variable ; inline recursive
160 : success? ( code -- ? ) 200 = ;
162 ERROR: download-failed response ;
164 M: download-failed error.
165 "HTTP request failed:" print nl
168 : check-response ( response -- response )
169 dup code>> success? [ download-failed ] unless ;
171 : with-http-request ( request quot -- response )
172 (with-http-request) check-response ; inline
174 : http-request ( request -- response data )
175 [ [ % ] with-http-request ] B{ } make
176 over content-charset>> decode ;
178 : <get-request> ( url -- request )
181 swap >url ensure-port >>url ;
183 : http-get ( url -- response data )
184 <get-request> http-request ;
186 : with-http-get ( url quot -- response )
187 [ <get-request> ] dip with-http-request ; inline
189 : download-name ( url -- name )
190 present file-name "?" split1 drop "/" ?tail drop ;
192 : download-to ( url file -- )
193 binary [ [ write ] with-http-get drop ] with-file-writer ;
195 : download ( url -- )
196 dup download-name download-to ;
198 : <post-request> ( post-data url -- request )
201 swap >url ensure-port >>url
204 : http-post ( post-data url -- response data )
205 <post-request> http-request ;