1 ! Copyright (C) 2004, 2005 Slava Pestov.
2 ! See http://factor.sf.net/license.txt for BSD license.
4 USING: arrays hashtables html http io kernel math namespaces
5 parser sequences strings ;
11 : print-header ( alist -- )
12 [ swap write ": " write print ] hash-each ;
14 : response ( header msg -- )
15 "HTTP/1.0 " write print print-header ;
17 : error-body ( error -- body )
18 <html> <body> <h1> write </h1> </body> </html> ;
20 : error-head ( error -- )
22 H{ { "Content-Type" "text/html" } } over response ;
24 : httpd-error ( error -- )
25 #! This must be run from handle-request
27 "head" "method" get = [ drop ] [ terpri error-body ] if ;
31 ! Make httpd-error print a body
33 "400 Bad request" httpd-error
36 : serving-content ( mime -- )
37 "Content-Type" associate
38 "200 Document follows" response terpri ;
40 : serving-html "text/html" serving-content ;
42 : serving-text "text/plain" serving-content ;
46 "301 Moved Permanently" response terpri ;
48 : directory-no/ ( -- )
50 "request" get % CHAR: / ,
51 "raw-query" get [ CHAR: ? , % ] when*
54 : query>hash ( query -- hash )
57 "=" split1 [ dup [ url-decode ] when ] 2apply 2array
61 : read-post-request ( header -- hash )
62 "Content-Length" swap hash dup
63 [ string>number read dup "raw-response" set query>hash ] when ;
65 : log-headers ( hash -- )
67 drop { "User-Agent" "X-Forwarded-For" "Host" } member?
68 ] hash-subset [ ": " swap 3append log-message ] hash-each ;
70 : prepare-url ( url -- url )
71 #! This is executed in the with-request namespace.
73 dup "raw-query" set query>hash "query" set
76 : prepare-header ( -- )
77 read-header dup "header" set
79 read-post-request "response" set ;
81 ! Responders are called in a new namespace with these
84 ! - method -- one of get, post, or head.
85 ! - request -- the entire URL requested, including responder
87 ! - raw-query -- raw query string
88 ! - query -- a hashtable of query parameters, eg
89 ! foo.bar?a=b&c=d becomes
90 ! H{ { "a" "b" } { "c" "d" } }
91 ! - header -- a hashtable of headers from the user's client
92 ! - response -- a hashtable of the POST request response
93 ! - raw-response -- raw POST request response
95 : query-param ( key -- value ) "query" get hash ;
97 : add-responder ( responder -- )
98 #! Add a responder object to the list.
99 "responder" over hash responders get set-hash ;
101 : add-simple-responder ( name quot -- )
103 [ drop ] swap append dup "get" set "post" set
105 ] make-hash add-responder ;
107 : make-responder ( quot -- responder )
108 #! quot has stack effect ( url -- )
111 drop "GET method not implemented" httpd-error
114 drop "POST method not implemented" httpd-error
117 drop "HEAD method not implemented" httpd-error
124 ] make-hash add-responder ;
126 : vhost ( name -- vhost )
127 vhosts get hash [ "default" vhost ] unless* ;
129 : responder ( name -- responder )
130 responders get hash [ "404" responder ] unless* ;
132 : set-default-responder ( name -- )
133 responder "default" responders get set-hash ;
135 : call-responder ( method argument responder -- )
136 over "argument" set [ swap get call ] bind ;
138 : serve-default-responder ( method url -- )
139 "default" responder call-responder ;
141 : log-responder ( path -- )
142 "Calling responder " swap append log-message ;
144 : trim-/ ( url -- url )
145 #! Trim a leading /, if there is one.
148 : serve-explicit-responder ( method url -- )
150 swap responder call-responder
152 ! Just a responder name by itself
153 drop "request" get "/" append redirect 2drop
156 : serve-responder ( method path host -- )
157 #! Responder paths come in two forms:
158 #! /foo/bar... - default responder used
159 #! /responder/foo/bar - responder foo, argument bar
161 dup log-responder trim-/ "responder/" ?head [
162 serve-explicit-responder
164 serve-default-responder
168 : no-such-responder ( -- )
169 "404 No such responder" httpd-error ;