124 lines
3.8 KiB
Factor
124 lines
3.8 KiB
Factor
! :folding=indent:collapseFolds=1:
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! $Id$
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!
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! Copyright (C) 2004 Slava Pestov.
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!
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! Redistribution and use in source and binary forms, with or without
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! modification, are permitted provided that the following conditions are met:
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!
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! 1. Redistributions of source code must retain the above copyright notice,
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! this list of conditions and the following disclaimer.
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!
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! 2. Redistributions in binary form must reproduce the above copyright notice,
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! this list of conditions and the following disclaimer in the documentation
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! and/or other materials provided with the distribution.
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!
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! THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
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! INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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! FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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! DEVELOPERS AND CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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! SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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! PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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! OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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! WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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! OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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! ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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IN: httpd-responder
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USE: hashtables
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USE: httpd
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USE: kernel
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USE: lists
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USE: logging
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USE: namespaces
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USE: stdio
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USE: streams
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USE: strings
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! Responders are called in a new namespace with these
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! variables:
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! - method -- one of get, post, or head.
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! - request -- the entire URL requested, including responder
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! name
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! - raw-query -- raw query string
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! - query -- an alist of query parameters, eg
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! foo.bar?a=b&c=d becomes
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! [ [[ "a" "b" ]] [[ "c" "d" ]] ]
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! - header -- an alist of headers from the user's client
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! - response -- an alist of the POST request response
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: <responder> ( -- responder )
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<namespace> [
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( url -- )
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[
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drop "GET method not implemented" httpd-error
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] "get" set
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( url -- )
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[
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drop "POST method not implemented" httpd-error
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] "post" set
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( url -- )
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[
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drop "HEAD method not implemented" httpd-error
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] "head" set
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( url -- )
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[
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drop bad-request
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] "bad" set
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] extend ;
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: get-responder ( name -- responder )
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"httpd-responders" get hash [
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"404" "httpd-responders" get hash
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] unless* ;
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: default-responder ( -- responder )
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"default" get-responder ;
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: set-default-responder ( name -- )
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get-responder "default" "httpd-responders" get set-hash ;
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: responder-argument ( argument -- argument )
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dup f-or-"" [ drop "default-argument" get ] when ;
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: call-responder ( method argument responder -- )
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[ responder-argument swap get call ] bind ;
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: serve-default-responder ( method url -- )
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default-responder call-responder ;
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: serve-explicit-responder ( method url -- )
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"/" split1 dup [
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swap get-responder call-responder
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] [
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! Just a responder name by itself
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drop "request" get "/" cat2 redirect drop
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] ifte ;
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: log-responder ( url -- )
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"Calling responder " swap cat2 log ;
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: trim-/ ( url -- url )
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#! Trim a leading /, if there is one.
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"/" ?str-head drop ;
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: serve-responder ( method url -- )
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#! Responder URLs come in two forms:
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#! /foo/bar... - default-responder used
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#! /responder/foo/bar - responder foo, argument bar
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dup log-responder trim-/ "responder/" ?str-head [
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serve-explicit-responder
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] [
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serve-default-responder
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] ifte ;
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: no-such-responder ( -- )
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"404 No such responder" httpd-error ;
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: add-responder ( responder -- )
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#! Add a responder object to the list.
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"responder" over hash "httpd-responders" get set-hash ;
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