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sunet
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sunet can be used with scsh 0.6 now (hopefully). 

explicitly named every interface
moved TOOTHLESS.SCM to MODULES.SCM
removed macros from CONDITIONALS.SCM (UNLESS, WHEN, ?, SWITCH, SWITCHQ)
  thereby removed conditionals.scm and the modules SWITCH-SYNTAX and CONDHAX.
This commit is contained in:
interp 2001-08-20 11:31:03 +00:00
parent a741498c59
commit 6c702e9a03
14 changed files with 798 additions and 619 deletions
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15
cgi-script.scm
View File

@ -82,13 +82,14 @@
;;; This only works for GET and POST methods. ;;; This only works for GET and POST methods.
(define (cgi-form-query) (define (cgi-form-query)
(switch string=? (getenv "REQUEST_METHOD") (let ((request-method (getenv "REQUEST_METHOD")))
(cond
(("GET") ((string=? request-method "GET")
(parse-html-form-query (getenv "QUERY_STRING"))) (parse-html-form-query (getenv "QUERY_STRING")))
(("POST") ((string=? request-method "POST")
(let ((nchars (string->number (getenv "CONTENT_LENGTH")))) (let ((nchars (string->number (getenv "CONTENT_LENGTH"))))
(parse-html-form-query (read-string nchars)))) (parse-html-form-query (read-string nchars))))
(else (error "Method not handled.")))) ; Don't be calling me. (else (error "Method not handled."))))) ; Don't be calling me.

92
cgi-server.scm
View File

@ -112,22 +112,25 @@
filename))))) filename)))))
(http-log "search: ~s, argv: ~s~%" search argv) (http-log "search: ~s, argv: ~s~%" search argv)
(switch string=? (request:method req) (let ((request-method (request:method req)))
(("GET" "POST") ; Could do others also. (cond
(if nph? ((or (string=? request-method "GET")
(wait (fork doit)) (string=? request-method "POST")) ; Could do others also.
(cgi-send-reply (run/port* doit) req))) (if nph?
(wait (fork doit))
(else (http-error http-reply/method-not-allowed req)))) (cgi-send-reply (run/port* doit) req)))
(else (http-error http-reply/method-not-allowed req)))))
(http-error http-reply/bad-request req "Empty CGI script")))) (http-error http-reply/bad-request req "Empty CGI script"))))
(define (split-and-decode-search-spec s) (define (split-and-decode-search-spec s)
(let recur ((i 0)) (let recur ((i 0))
(? ((string-index s #\+ i) => (lambda (j) (cons (unescape-uri s i j) (cond
((string-index s #\+ i) => (lambda (j) (cons (unescape-uri s i j)
(recur (+ j 1))))) (recur (+ j 1)))))
(else (list (unescape-uri s i (string-length s))))))) (else (list (unescape-uri s i (string-length s)))))))
;;; Compute the CGI scripts' process environment by adding the standard CGI ;;; Compute the CGI scripts' process environment by adding the standard CGI
@ -190,26 +193,26 @@
,@request-invariant-cgi-env ; Stuff that never changes (see below). ,@request-invariant-cgi-env ; Stuff that never changes (see below).
,@(? ((http-url:search (request:url req)) => ,@(cond ((http-url:search (request:url req)) =>
(lambda (srch) `(("QUERY_STRING" . ,srch)))) (lambda (srch) `(("QUERY_STRING" . ,srch))))
(else '())) (else '()))
,@(? ((get-header headers 'content-type) => ,@(cond ((get-header headers 'content-type) =>
(lambda (ct) `(("CONTENT_TYPE" . ,ct)))) (lambda (ct) `(("CONTENT_TYPE" . ,ct))))
(else '())) (else '()))
,@(? ((get-header headers 'content-length) =>
(lambda (cl) ; Skip initial whitespace (& other non-digits).
(let ((first-digit (char-set-index cl char-set:numeric))
(cl-len (string-length cl)))
(if first-digit
`(("CONTENT_LENGTH" . ,(substring cl first-digit cl-len)))
(http-error http-reply/bad-request
req
"Illegal Content-length: header.")))))
(else '()))
,@(cond ((get-header headers 'content-length) =>
(lambda (cl) ; Skip initial whitespace (& other non-digits).
(let ((first-digit (char-set-index cl char-set:numeric))
(cl-len (string-length cl)))
(if first-digit
`(("CONTENT_LENGTH" . ,(substring cl first-digit cl-len)))
(http-error http-reply/bad-request
req
"Illegal Content-length: header.")))))
(else '()))
. ,(env->alist)))))) . ,(env->alist))))))
(define request-invariant-cgi-env #f) (define request-invariant-cgi-env #f)
@ -239,29 +242,32 @@
(ctype (get-header headers 'content-type)) ; The script headers (ctype (get-header headers 'content-type)) ; The script headers
(loc (get-header headers 'location)) (loc (get-header headers 'location))
(stat (let ((stat-lines (get-header-lines headers 'status))) (stat (let ((stat-lines (get-header-lines headers 'status)))
(? ((not (pair? stat-lines)) ; No status header. (cond
"200 The idiot CGI script left out the status line.") ((not (pair? stat-lines)) ; No status header.
((null? (cdr stat-lines)) ; One line status header. "200 The idiot CGI script left out the status line.")
(car stat-lines)) ((null? (cdr stat-lines)) ; One line status header.
(else ; Vas ist das? (car stat-lines))
(http-error http-reply/internal-error req (else ; Vas ist das?
"CGI script generated multi-line status header"))))) (http-error http-reply/internal-error req
"CGI script generated multi-line status header")))))
(out (current-output-port))) (out (current-output-port)))
(http-log "headers: ~s~%" headers) (http-log "headers: ~s~%" headers)
;; Send the reply header back to the client ;; Send the reply header back to the client
;; (unless it's a headerless HTTP 0.9 reply). ;; (unless it's a headerless HTTP 0.9 reply).
(unless (v0.9-request? req) (if (not (v0.9-request? req))
(format out "HTTP/1.0 ~a\r~%" stat) (begin
(if ctype (format out "Content-type: ~a\r~%" ctype)) (format out "HTTP/1.0 ~a\r~%" stat)
(if loc (format out "Location: ~a\r~%" loc)) (if ctype (format out "Content-type: ~a\r~%" ctype))
(write-crlf out)) (if loc (format out "Location: ~a\r~%" loc))
(write-crlf out)))
(http-log "request:method=~a~%" (request:method req)) (http-log "request:method=~a~%" (request:method req))
;; Copy the reply body back to the client and close the script port ;; Copy the reply body back to the client and close the script port
;; (unless it's a bodiless HEAD transaction). ;; (unless it's a bodiless HEAD transaction).
(unless (string=? (request:method req) "HEAD") (if (not (string=? (request:method req) "HEAD"))
(copy-inport->outport script-port out) (begin
(close-input-port script-port)))) (copy-inport->outport script-port out)
(close-input-port script-port)))))

2
htmlout.scm
View File

@ -145,7 +145,7 @@
(cons (ascii->char 34) """))) (cons (ascii->char 34) """)))
(define *html-entities* (define *html-entities*
(chars->char-set (map car *html-entity-alist*))) (list->char-set (map car *html-entity-alist*)))
(define *html-entity-table* (define *html-entity-table*
(let ((v (make-vector 256 #f))) (let ((v (make-vector 256 #f)))

106
httpd-core.scm
View File

@ -191,7 +191,7 @@
(fatal-syntax-error "EOF while parsing request.") (fatal-syntax-error "EOF while parsing request.")
(let* ((elts (string->words line)) ; Split at white-space. (let* ((elts (string->words line)) ; Split at white-space.
(version (switch = (length elts) (version (case (length elts)
((2) '(0 . 9)) ((2) '(0 . 9))
((3) (parse-http-version (caddr elts))) ((3) (parse-http-version (caddr elts)))
(else (fatal-syntax-error "Bad HTTP version."))))) (else (fatal-syntax-error "Bad HTTP version.")))))
@ -386,78 +386,90 @@
(if html-ok? (write-string "Content-type: text/html\r\n" out)) (if html-ok? (write-string "Content-type: text/html\r\n" out))
;; If html-ok?, we must send back some html, with the <body> tag unclosed. ;; If html-ok?, we must send back some html, with the <body> tag unclosed.
(switch = reply-code (cond
;; This error reply requires two args: message is the new URI: field, ;; This error reply requires two args: message is the new URI: field,
;; and the first EXTRA is the older Location: field. ;; and the first EXTRA is the older Location: field.
((http-reply/moved-temp http-reply/moved-perm) ((or (= reply-code http-reply/moved-temp)
(when new-protocol? (= reply-code http-reply/moved-perm))
(format out "URI: ~A\r~%" message) (if new-protocol?
(format out "Location: ~A\r~%" (car extras))) (begin
(when html-ok? (format out "URI: ~A\r~%" message)
(format out "Location: ~A\r~%" (car extras))))
(if html-ok?
(begin
(title-html out "Document moved" new-protocol?) (title-html out "Document moved" new-protocol?)
(format out (format out
"This document has ~A moved to a <A HREF=\"~A\">new location</A>.~%" "This document has ~A moved to a <A HREF=\"~A\">new location</A>.~%"
(if (= reply-code http-reply/moved-temp) "temporarily" "permanently") (if (= reply-code http-reply/moved-temp) "temporarily" "permanently")
message))) message))))
((http-reply/bad-request) ((= reply-code http-reply/bad-request)
(when html-ok? (if html-ok?
(begin
(generic-title) (generic-title)
(write-string "<P>Client sent a query that this server could not understand.\n" (write-string "<P>Client sent a query that this server could not understand.\n"
out) out)
(if message (format out "<BR>~%Reason: ~A~%" message)))) (if message (format out "<BR>~%Reason: ~A~%" message)))))
((http-reply/unauthorized) ((= reply-code http-reply/unauthorized)
(if new-protocol? (if new-protocol?
(format out "WWW-Authenticate: ~A\r~%\r~%" message)) ; Vas is das? (format out "WWW-Authenticate: ~A\r~%\r~%" message)) ; Vas is das?
(when html-ok? (if html-ok?
(title-html out "Authorization Required" new-protocol?) (begin
(write-string "<P>Browser not authentication-capable or\n" out) (title-html out "Authorization Required" new-protocol?)
(write-string "authentication failed.\n" out) (write-string "<P>Browser not authentication-capable or\n" out)
(if message (format out "~a~%" message)))) (write-string "authentication failed.\n" out)
(if message (format out "~a~%" message)))))
((http-reply/forbidden) ((= reply-code http-reply/forbidden)
(unless html-ok? (if (not html-ok?)
(title-html out "Request not allowed." new-protocol?) (begin
(format out "Your client does not have permission to perform a ~A~%" (title-html out "Request not allowed." new-protocol?)
(request:method req)) (format out
(format out "operation on url ~a.~%" (request:uri req)) "Your client does not have permission to perform a ~A~%"
(if message (format out "<P>~%~a~%" message)))) (request:method req))
(format out "operation on url ~a.~%" (request:uri req))
(if message (format out "<P>~%~a~%" message)))))
((= reply-code http-reply/not-found)
(if html-ok?
(begin
(title-html out "URL not found" new-protocol?)
(write-string
"<P>The requested URL was not found on this server.\n"
out)
(if message (format out "<P>~%~a~%" message)))))
((http-reply/not-found) ((= reply-code http-reply/internal-error)
(when html-ok?
(title-html out "URL not found" new-protocol?)
(write-string "<P>The requested URL was not found on this server.\n"
out)
(if message (format out "<P>~%~a~%" message))))
((http-reply/internal-error)
(format (current-error-port) "ERROR: ~A~%" message) (format (current-error-port) "ERROR: ~A~%" message)
(when html-ok? (if html-ok?
(generic-title) (begin
(format out "The server encountered an internal error or (generic-title)
(format out "The server encountered an internal error or
misconfiguration and was unable to complete your request. misconfiguration and was unable to complete your request.
<P> <P>
Please inform the server administrator, ~A, of the circumstances leading to Please inform the server administrator, ~A, of the circumstances leading to
the error, and time it occured.~%" the error, and time it occured.~%"
server/admin) server/admin)
(if message (format out "<P>~%~a~%" message)))) (if message (format out "<P>~%~a~%" message)))))
((http-reply/not-implemented) ((= reply-code http-reply/not-implemented)
(when html-ok? (if html-ok?
(generic-title) (begin
(format out "This server does not currently implement (generic-title)
(format out "This server does not currently implement
the requested method (~A).~%" the requested method (~A).~%"
(request:method req)) (request:method req))
(if message (format out "<P>~a~%" message)))) (if message (format out "<P>~a~%" message)))))
(else (if html-ok? (generic-title)))) (else (if html-ok? (generic-title))))
(cond (html-ok? (cond
;; Output extra stuff and close the <body> tag. (html-ok?
(for-each (lambda (x) (format out "<BR>~s~%" x)) extras) ;; Output extra stuff and close the <body> tag.
(write-string "</BODY>\n" out))) (for-each (lambda (x) (format out "<BR>~s~%" x)) extras)
(write-string "</BODY>\n" out)))
; (force-output out) ;;; TODO check this ; (force-output out) ;;; TODO check this
; (flush-all-ports) ; (flush-all-ports)
(force-output out) (force-output out)

230
httpd-handlers.scm
View File

@ -200,24 +200,26 @@
(define (file-serve-or-dir fname file-path req directory-serve) (define (file-serve-or-dir fname file-path req directory-serve)
(if (file-name-directory? fname) ; Simple index generation. (if (file-name-directory? fname) ; Simple index generation.
(directory-serve fname file-path req) (directory-serve fname file-path req)
(let ((request-method (request:method req)))
(cond
((or (string=? request-method "GET")
(string=? request-method "HEAD")) ; Absolutely.
(let ((info (stat-carefully fname req)))
(case (file-info:type info)
((regular fifo socket)
(send-file fname info req))
((directory) ; Send back a redirection "foo" -> "foo/"
(http-error http-reply/moved-perm req
(string-append (request:uri req) "/")
(string-append (http-url->string (request:url req))
"/")))
(switch string=? (request:method req) (else (http-error http-reply/forbidden req)))))
(("GET" "HEAD") ; Absolutely.
(let ((info (stat-carefully fname req))) (else (http-error http-reply/method-not-allowed req))))))
(case (file-info:type info)
((regular fifo socket)
(send-file fname info req))
((directory) ; Send back a redirection "foo" -> "foo/"
(http-error http-reply/moved-perm req
(string-append (request:uri req) "/")
(string-append (http-url->string (request:url req))
"/")))
(else (http-error http-reply/forbidden req)))))
(else (http-error http-reply/method-not-allowed req)))))
(define (directory-index-serve fname file-path req) (define (directory-index-serve fname file-path req)
(file-serve (string-append fname "index.html") file-path req)) (file-serve (string-append fname "index.html") file-path req))
@ -261,17 +263,32 @@
(else "unknown.xbm"))) (else "unknown.xbm")))
(define (file-extension->tag fname) (define (file-extension->tag fname)
(switch string-ci=? (file-name-extension fname) (let ((ext (file-name-extension fname)))
((".txt") 'text) (cond
((".doc" ".html" ".rtf" ".tex") 'doc) ((string-ci=? ext ".txt") 'text)
((".gif" ".jpg" ".jpeg" ".tiff" ".tif") 'image) ((or (string-ci=? ext ".doc")
((".mpeg" ".mpg") 'movie) (string-ci=? ext ".html")
((".au" ".snd" ".wav") 'audio) (string-ci=? ext ".rtf")
((".tar" ".zip" ".zoo") 'archive) (string-ci=? ext ".tex")) 'doc)
((".gz" ".Z" ".z") 'compressed) ((or (string-ci=? ext ".gif")
((".uu") 'uu) (string-ci=? ext ".jpg")
((".hqx") 'binhex) (string-ci=? ext ".jpeg")
(else 'binary))) (string-ci=? ext ".tiff")
(string-ci=? ext ".tif")) 'image)
((or (string-ci=? ext ".mpeg")
(string-ci=? ext ".mpg")) 'movie)
((or (string-ci=? ext ".au")
(string-ci=? ext ".snd")
(string-ci=? ext ".wav")) 'audio)
((or (string-ci=? ext ".tar")
(string-ci=? ext ".zip")
(string-ci=? ext ".zoo")) 'archive)
((or (string-ci=? ext ".gz")
(string-ci=? ext ".Z")
(string-ci=? ext ".z")) 'compressed)
((string-ci=? ext ".uu") 'uu)
((string-ci=? ext ".hqx") 'binhex)
(else 'binary))))
(define (file-tag fname type) (define (file-tag fname type)
(case type (case type
@ -394,44 +411,49 @@
(string-append icon-name (tag->icon tag)))) (string-append icon-name (tag->icon tag))))
(else tag->icon)))) (else tag->icon))))
(lambda (fname file-path req) (lambda (fname file-path req)
(switch string=? (request:method req) (let ((request-method (request:method req)))
(("GET" "HEAD") (cond
((or (string=? request-method "GET")
(string=? request-method "HEAD"))
(if (not (eq? 'directory
(file-info:type (stat-carefully fname req))))
(http-error http-reply/forbidden req))
(if (not (v0.9-request? req))
(begin
(begin-http-header #t http-reply/ok)
(write-string "Content-type: text/html\r\n")
(write-string "\r\n")))
(unless (eq? 'directory (file-info:type (stat-carefully fname req))) (with-tag #t html ()
(http-error http-reply/forbidden req)) (let ((title (string-append "Index of /"
(join-strings file-path "/"))))
(unless (v0.9-request? req) (with-tag #t head ()
(begin-http-header #t http-reply/ok) (emit-title #t title))
(write-string "Content-type: text/html\r\n") (with-tag #t body ()
(write-string "\r\n")) (emit-header #t 1 title)
(with-tag #t pre ()
(with-tag #t html () (emit-tag #t 'img
(let ((title (string-append "Index of /" (cons 'src (icon-name 'blank))
(join-strings file-path "/")))) (cons 'alt " "))
(with-tag #t head () (write-string "Name ")
(emit-title #t title)) (write-string "Last modified ")
(with-tag #t body () (write-string "Size ")
(emit-header #t 1 title) (write-string "Description")
(with-tag #t pre () (emit-tag #t 'hr)
(emit-tag #t 'img (emit-tag #t 'img
(cons 'src (icon-name 'blank)) (cons 'src (icon-name 'back))
(cons 'alt " ")) (cons 'alt "[UP ]"))
(write-string "Name ") (if (not (null? file-path))
(write-string "Last modified ") (begin
(write-string "Size ") (with-tag #t a ((href ".."))
(write-string "Description") (write-string "Parent directory"))
(emit-tag #t 'hr) (newline)))
(emit-tag #t 'img
(cons 'src (icon-name 'back))
(cons 'alt "[UP ]"))
(unless (null? file-path)
(with-tag #t a ((href ".."))
(write-string "Parent directory"))
(newline))
(let ((n-files (directory-index req fname icon-name))) (let ((n-files (directory-index req fname icon-name)))
(emit-tag #t 'hr) (emit-tag #t 'hr)
(format #t "~d files" n-files))))))) (format #t "~d files" n-files)))))))
(else (http-error http-reply/method-not-allowed req)))))) (else (http-error http-reply/method-not-allowed req)))))))
(define (index-or-directory-server icon-name) (define (index-or-directory-server icon-name)
(let ((directory-serve (directory-server icon-name))) (let ((directory-serve (directory-server icon-name)))
@ -467,18 +489,21 @@
(call-with-input-file filename (call-with-input-file filename
(lambda (in) (lambda (in)
(let ((out (current-output-port))) (let ((out (current-output-port)))
(unless (v0.9-request? req) (if (not (v0.9-request? req))
(begin-http-header out http-reply/ok) (begin
(receive (filename content-encoding) (begin-http-header out http-reply/ok)
(file-extension->content-encoding filename) (receive (filename content-encoding)
(if content-encoding (file-extension->content-encoding filename)
(format out "Content-encoding: ~A\r~%" content-encoding)) (if content-encoding
(? ((file-extension->content-type filename) => (format out "Content-encoding: ~A\r~%"
(lambda (ct) (format out "Content-type: ~A\r~%" ct))))) content-encoding))
(format out "Last-modified: ~A\r~%" (cond ((file-extension->content-type filename) =>
(time->http-date-string (file-info:mtime info))) (lambda (ct)
(format out "Content-length: ~D\r~%" (file-info:size info)) (format out "Content-type: ~A\r~%" ct)))))
(write-string "\r\n" out)) (format out "Last-modified: ~A\r~%"
(time->http-date-string (file-info:mtime info)))
(format out "Content-length: ~D\r~%" (file-info:size info))
(write-string "\r\n" out)))
(copy-inport->outport in out)))))) (copy-inport->outport in out))))))
@ -497,31 +522,38 @@
(define (file-extension->content-type fname) (define (file-extension->content-type fname)
(switch string-ci=? (file-name-extension fname) (let ((ext (file-name-extension fname)))
((".html") "text/html") (cond
((".txt") "text/plain") ((string-ci=? ext ".html") "text/html")
((".gif") "image/gif") ((string-ci=? ext ".txt") "text/plain")
((".png") "image/png") ((string-ci=? ext ".gif") "image/gif")
((".jpg" ".jpeg") "image/jpeg") ((string-ci=? ext ".png") "image/png")
((".tiff" ".tif") "image/tif") ((or (string-ci=? ext ".jpg")
((".rtf") "text/rtf") (string-ci=? ext ".jpeg")) "image/jpeg")
((".mpeg" ".mpg") "video/mpeg") ((or (string-ci=? ext ".tiff")
((".au" ".snd") "audio/basic") (string-ci=? ext ".tif")) "image/tif")
((".wav") "audio/x-wav") ((string-ci=? ext ".rtf") "text/rtf")
((".dvi") "application/x-dvi") ((or (string-ci=? ext ".mpeg")
((".tex" ".latex") "application/latex") (string-ci=? ext ".mpg")) "video/mpeg")
((".zip") "application/zip") ((or (string-ci=? ext ".au")
((".tar") "application/tar") (string-ci=? ext ".snd")) "audio/basic")
((".ps") "application/postscript") ((string-ci=? ext ".wav") "audio/x-wav")
((".pdf") "application/pdf") ((string-ci=? ext ".dvi") "application/x-dvi")
(else "application/octet-stream"))) ((or (string-ci=? ext ".tex")
(string-ci=? ext ".latex")) "application/latex")
((string-ci=? ext ".zip") "application/zip")
((string-ci=? ext ".tar") "application/tar")
((string-ci=? ext ".ps") "application/postscript")
((string-ci=? ext ".pdf") "application/pdf")
(else "application/octet-stream"))))
(define (file-extension->content-encoding fname) (define (file-extension->content-encoding fname)
(cond (cond
((switch string-ci=? (file-name-extension fname) ((let ((ext (file-name-extension fname)))
((".Z") "x-compress") (cond
((".gz") "x-gzip") ((string-ci=? ext ".Z") "x-compress")
(else #f)) ((string-ci=? ext ".gz") "x-gzip")
(else #f)))
=> (lambda (encoding) => (lambda (encoding)
(values (file-name-sans-extension fname) encoding))) (values (file-name-sans-extension fname) encoding)))
(else (values fname #f)))) (else (values fname #f))))
@ -531,7 +563,7 @@
(define (copy-inport->outport in out) (define (copy-inport->outport in out)
(let ((buf (make-string server/buffer-size))) (let ((buf (make-string server/buffer-size)))
(let loop () (let loop ()
(? ((read-string! buf in) => (lambda (nchars) (cond ((read-string! buf in) => (lambda (nchars)
(write-string buf out 0 nchars) (write-string buf out 0 nchars)
(loop)))))) (loop))))))
(force-output out)) (force-output out))

57
info-gateway.scm
View File

@ -129,35 +129,36 @@
(string-append "info?" node-name)))))) (string-append "info?" node-name))))))
(lambda (path req) (lambda (path req)
(switch string=? (request:method req) (let ((request-method (request:method req)))
(("GET") (cond
(with-fatal-error-handler ((string=? request-method "GET")
(lambda (c decline) (with-fatal-error-handler
(cond (lambda (c decline)
((info-gateway-error? c) (cond
(apply http-error http-reply/internal-error req ((info-gateway-error? c)
(condition-stuff c))) (apply http-error http-reply/internal-error req
((http-error? c) (condition-stuff c)))
(apply http-error (car (condition-stuff c)) req ((http-error? c)
(cddr (condition-stuff c)))) (apply http-error (car (condition-stuff c)) req
(else (cddr (condition-stuff c))))
(decline)))) (else
(decline))))
(if (not (v0.9-request? req))
(begin
(begin-http-header #t http-reply/ok)
(write-string "Content-type: text/html\r\n")
(write-string "\r\n")))
(receive (find-entry node-name) (parse-info-url (request:url req))
(display-node node-name
(file-finder find-entry)
(referencer make-reference (request:url req))
icon-name))
(if (not (v0.9-request? req)) (with-tag #t address ()
(begin (write-string address))))
(begin-http-header #t http-reply/ok) (else (http-error http-reply/method-not-allowed req)))))))
(write-string "Content-type: text/html\r\n")
(write-string "\r\n")))
(receive (find-entry node-name) (parse-info-url (request:url req))
(display-node node-name
(file-finder find-entry)
(referencer make-reference (request:url req))
icon-name))
(with-tag #t address ()
(write-string address))))
(else (http-error http-reply/method-not-allowed req))))))
(define split-header-line (define split-header-line
(let ((split (infix-splitter "(, *)|( +)|( *\t *)")) (let ((split (infix-splitter "(, *)|( +)|( *\t *)"))

576
modules.scm
View File

@ -1,25 +1,30 @@
;;; Scheme 48 module definitions for TCP/IP protocol suites. ;;; Scheme 48 module definitions for TCP/IP protocol suites.
;;; Copyright (c) 1995 by Olin Shivers. ;;; Copyright (c) 1995 by Olin Shivers.
(define-interface smtp-interface
(export sendmail %sendmail
expn vrfy mail-help
smtp-transactions
smtp-transactions/no-close
smtp/open smtp/helo smtp/mail smtp/rcpt smtp/data
smtp/send smtp/soml smtp/saml smtp/rset smtp/expn
smtp/help smtp/noop smtp/quit smtp/turn
handle-smtp-reply
read-smtp-reply
parse-smtp-reply
smtp-stuff))
(define-interface smtp-internals-interface
(export read-crlf-line ; These two should be in an
write-crlf ; auxiliary module.
smtp-query
nullary-smtp-command
unary-smtp-command))
(define-structures (define-structures
((smtp (export sendmail %sendmail ((smtp smtp-interface)
expn vrfy mail-help (smtp-internals smtp-internals-interface))
smtp-transactions
smtp-transactions/no-close
smtp/open smtp/helo smtp/mail smtp/rcpt smtp/data
smtp/send smtp/soml smtp/saml smtp/rset smtp/expn
smtp/help smtp/noop smtp/quit smtp/turn
handle-smtp-reply
read-smtp-reply
parse-smtp-reply
smtp-stuff))
(smtp-internals (export read-crlf-line ; These two should be in an
write-crlf ; auxiliary module.
smtp-query
nullary-smtp-command
unary-smtp-command)))
(open scsh ; write-string read-string/partial force-output (open scsh ; write-string read-string/partial force-output
; system-name user-login-name and sockets ; system-name user-login-name and sockets
@ -27,15 +32,16 @@
receiving ; values receive receiving ; values receive
let-opt ; let-optionals let-opt ; let-optionals
error-package ; error error-package ; error
switch-syntax ; switchq
condhax ; ? for COND
scheme) scheme)
(files smtp)) (files smtp))
(define-structure crlf-io (export read-crlf-line (define-interface crlf-io-interface
read-crlf-line-timeout (export read-crlf-line
write-crlf) read-crlf-line-timeout
write-crlf))
(define-structure crlf-io crlf-io-interface
(open ascii ; ascii->char (open ascii ; ascii->char
scsh ; read-line write-string force-output scsh ; read-line write-string force-output
receiving ; MV return (RECEIVE and VALUES) receiving ; MV return (RECEIVE and VALUES)
@ -45,26 +51,19 @@
(files crlf-io)) (files crlf-io))
(define-structures ((switch-syntax (export (switch :syntax) (define-interface rfc822-interface
(switchq :syntax))) (export read-rfc822-headers
(condhax (export (when :syntax) read-rfc822-field
(unless :syntax) %read-rfc822-headers
(? :syntax)))) %read-rfc822-field
(open scheme) rejoin-header-lines
(files conditionals)) get-header-all
get-header-lines
get-header
))
(define-structure rfc822 rfc822-interface
(define-structure rfc822 (export read-rfc822-headers
read-rfc822-field
%read-rfc822-headers
%read-rfc822-field
rejoin-header-lines
get-header-all
get-header-lines
get-header
)
(open receiving ; MV return (RECEIVE and VALUES) (open receiving ; MV return (RECEIVE and VALUES)
condhax ; ? for COND
scsh-utilities ; index scsh-utilities ; index
string-lib string-lib
let-opt ; let-optionals let-opt ; let-optionals
@ -77,32 +76,39 @@
(files rfc822)) (files rfc822))
(define-structure strings (export string-map (define-interface strings-interface
downcase-string (export string-map
upcase-string downcase-string
char-set-index upcase-string
char-set-rindex char-set-index
string-reduce char-set-rindex
skip-whitespace string-reduce
string-prefix? skip-whitespace
string-suffix? string-prefix?
trim-spaces) string-suffix?
trim-spaces))
(define-structure strings strings-interface
(open char-set-lib let-opt scheme) (open char-set-lib let-opt scheme)
(files stringhax)) (files stringhax))
(define-structure uri-package (export parse-uri
uri-escaped-chars (define-interface uri-interface
unescape-uri (export parse-uri
escape-uri uri-escaped-chars
resolve-uri unescape-uri
split-uri-path escape-uri
uri-path-list->path resolve-uri
simplify-uri-path) split-uri-path
uri-path-list->path
simplify-uri-path))
(define-structure uri uri-interface
(open scsh-utilities (open scsh-utilities
string-lib string-lib
let-opt let-opt
receiving receiving
condhax
ascii ascii
strings strings
char-set-lib char-set-lib
@ -111,136 +117,147 @@
scheme) scheme)
(files uri)) (files uri))
(define-structure url-package (export userhost? ; USERHOST
make-userhost ; record struct
userhost:user (define-interface url-interface
userhost:password (export userhost? ; USERHOST
userhost:host make-userhost ; record struct
userhost:port
set-userhost:user userhost:user
set-userhost:password userhost:password
set-userhost:host userhost:host
set-userhost:port userhost:port
parse-userhost ; parse &
userhost->string ; unparse.
http-url? ; HTTP-URL set-userhost:user
make-http-url ; record struct set-userhost:password
set-userhost:host
set-userhost:port
parse-userhost ; parse &
userhost->string ; unparse.
http-url:userhost http-url? ; HTTP-URL
http-url:path make-http-url ; record struct
http-url:search
http-url:frag-id
set-http-url:userhost http-url:userhost
set-http-url:path http-url:path
set-http-url:search http-url:search
set-http-url:frag-id http-url:frag-id
parse-http-url ; parse &
http-url->string) ; unparse.
set-http-url:userhost
set-http-url:path
set-http-url:search
set-http-url:frag-id
parse-http-url ; parse &
http-url->string)) ; unparse.
(define-structure url url-interface
(open defrec-package (open defrec-package
receiving receiving
condhax
string-lib string-lib
char-set-lib char-set-lib
uri-package uri
scsh-utilities scsh-utilities
httpd-error httpd-error
scheme) scheme)
(files url)) (files url))
(define-structure httpd-error (export http-error? (define-interface httpd-error-interface
http-error (export http-error?
fatal-syntax-error? http-error
fatal-syntax-error) fatal-syntax-error?
fatal-syntax-error))
(define-structure httpd-error httpd-error-interface
(open conditions signals handle scheme) (open conditions signals handle scheme)
(files httpd-error)) (files httpd-error))
(define-structure handle-fatal-error (export with-fatal-error-handler*
(with-fatal-error-handler :syntax)) (define-interface handle-fatal-error-interface
(export with-fatal-error-handler*
(with-fatal-error-handler :syntax)))
(define-structure handle-fatal-error handle-fatal-error-interface
(open scheme conditions handle) (open scheme conditions handle)
(files handle-fatal-error)) (files handle-fatal-error))
(define-structure httpd-core (export server/version
server/protocol
server/admin
set-server/admin!
http-log (define-interface httpd-core-interface
*http-log?* (export server/version
*http-log-port* server/protocol
server/admin
set-server/admin!
httpd http-log
*http-log?*
*http-log-port*
make-request ; HTTP request httpd
request? ; record type.
request:method
request:uri
request:url
request:version
request:headers
request:socket
set-request:method
set-request:uri
set-request:url
set-request:version
set-request:headers
set-request:socket
version< version<= make-request ; HTTP request
v0.9-request? request? ; record type.
version->string request:method
request:uri
;; Integer reply codes request:url
reply-code->text request:version
http-reply/ok request:headers
http-reply/created request:socket
http-reply/accepted set-request:method
http-reply/prov-info set-request:uri
http-reply/no-content set-request:url
http-reply/mult-choice set-request:version
http-reply/moved-perm set-request:headers
http-reply/moved-temp set-request:socket
http-reply/method
http-reply/not-mod
http-reply/bad-request
http-reply/unauthorized
http-reply/payment-req
http-reply/forbidden
http-reply/not-found
http-reply/method-not-allowed
http-reply/none-acceptable
http-reply/proxy-auth-required
http-reply/timeout
http-reply/conflict
http-reply/gone
http-reply/internal-error
http-reply/not-implemented
http-reply/bad-gateway
http-reply/service-unavailable
http-reply/gateway-timeout
time->http-date-string version< version<=
begin-http-header v0.9-request?
set-http-header-beginner! version->string
send-http-error-reply
;; Integer reply codes
reply-code->text
http-reply/ok
http-reply/created
http-reply/accepted
http-reply/prov-info
http-reply/no-content
http-reply/mult-choice
http-reply/moved-perm
http-reply/moved-temp
http-reply/method
http-reply/not-mod
http-reply/bad-request
http-reply/unauthorized
http-reply/payment-req
http-reply/forbidden
http-reply/not-found
http-reply/method-not-allowed
http-reply/none-acceptable
http-reply/proxy-auth-required
http-reply/timeout
http-reply/conflict
http-reply/gone
http-reply/internal-error
http-reply/not-implemented
http-reply/bad-gateway
http-reply/service-unavailable
http-reply/gateway-timeout
set-my-fqdn! time->http-date-string
set-my-port!) begin-http-header
send-http-error-reply
set-my-fqdn!
set-my-port!))
(define-structure httpd-core httpd-core-interface
(open threads (open threads
scsh scsh
receiving receiving
let-opt let-opt
crlf-io crlf-io
rfc822 rfc822
switch-syntax
condhax
strings strings
char-set-lib char-set-lib
defrec-package defrec-package
@ -250,39 +267,48 @@
defenum-package defenum-package
httpd-error httpd-error
handle-fatal-error handle-fatal-error
uri-package uri
url-package url
formats formats
scheme) scheme)
(files httpd-core)) (files httpd-core))
;;; For parsing submissions from HTML forms. ;;; For parsing submissions from HTML forms.
(define-structure parse-html-forms (export parse-html-form-query unescape-uri+) (define-interface parse-html-forms-interface
(export parse-html-form-query unescape-uri+))
(define-structure parse-html-forms parse-html-forms-interface
(open scsh scsh-utilities let-opt string-lib (open scsh scsh-utilities let-opt string-lib
receiving uri-package strings condhax scheme) receiving uri strings
scheme)
(files parse-forms)) (files parse-forms))
;;; For writing CGI scripts in Scheme. ;;; For writing CGI scripts in Scheme.
(define-structure cgi-script-package (export cgi-form-query) (define-interface cgi-script-interface (export cgi-form-query))
(define-structure cgi-script cgi-script-interface
(open scsh (open scsh
switch-syntax
error-package error-package
parse-html-forms parse-html-forms
scheme) scheme)
(files cgi-script)) (files cgi-script))
;;; Provides the server interface to CGI scripts. ;;; Provides the server interface to CGI scripts.
(define-structure cgi-server-package (export cgi-default-bin-path (define-interface cgi-server-interface
cgi-handler (export cgi-default-bin-path
initialise-request-invariant-cgi-env) cgi-handler
initialise-request-invariant-cgi-env))
(define-structure cgi-server cgi-server-interface
(open strings (open strings
string-lib string-lib
rfc822 rfc822
crlf-io ; WRITE-CRLF crlf-io ; WRITE-CRLF
uri-package uri
url-package ; HTTP-URL record type url ; HTTP-URL record type
httpd-core ; REQUEST record type, HTTP-ERROR & reply codes httpd-core ; REQUEST record type, HTTP-ERROR & reply codes
; version stuff ; version stuff
httpd-basic-handlers ; HTTP-HOMEDIR, SERVE-ROOTED-FILE-PATH httpd-basic-handlers ; HTTP-HOMEDIR, SERVE-ROOTED-FILE-PATH
@ -290,63 +316,68 @@
scsh-utilities ; INDEX scsh-utilities ; INDEX
scsh ; syscalls scsh ; syscalls
formats ; format formats ; format
condhax ; ? is COND
switch-syntax ; SWITCHQ
scheme) scheme)
(files cgi-server)) (files cgi-server))
(define-structure htmlout-package (export emit-tag
emit-close-tag
emit-p (define-interface htmlout-interface
emit-title (export emit-tag
emit-header ; And so forth... emit-close-tag
with-tag emit-p
with-tag* emit-title
emit-header ; And so forth...
escape-html with-tag
emit-text) with-tag*
escape-html
emit-text))
(define-structure htmlout htmlout-interface
(open scsh scsh-utilities strings formats ascii receiving scheme) (open scsh scsh-utilities strings formats ascii receiving scheme)
(files htmlout)) (files htmlout))
(define-structure httpd-basic-handlers (export alist-path-dispatcher
home-dir-handler (define-interface httpd-basic-handlers-interface
tilde-home-dir-handler (export alist-path-dispatcher
rooted-file-handler home-dir-handler
rooted-file-or-directory-handler tilde-home-dir-handler
null-path-handler rooted-file-handler
serve-rooted-file-path rooted-file-or-directory-handler
file-serve null-path-handler
file-server-and-dir serve-rooted-file-path
http-homedir file-serve
send-file file-server-and-dir
dotdot-check http-homedir
file-extension->content-type send-file
copy-inport->outport) dotdot-check
file-extension->content-type
copy-inport->outport))
(define-structure httpd-basic-handlers httpd-basic-handlers-interface
(open scsh ; syscalls (open scsh ; syscalls
formats ; FORMAT formats ; FORMAT
condhax ; UNLESS, ? for COND
switch-syntax ; Conditionals
httpd-core ; REQUEST record type, HTTP-ERROR & reply codes, httpd-core ; REQUEST record type, HTTP-ERROR & reply codes,
; v0.9-request, begin-http-header ; v0.9-request, begin-http-header
httpd-error httpd-error
htmlout-package htmlout
conditions ; CONDITION-STUFF conditions ; CONDITION-STUFF
url-package ; HTTP-URL record type url ; HTTP-URL record type
scheme) scheme)
(files httpd-handlers)) (files httpd-handlers))
(define-structure seval-handler-package (export seval-handler) (define-interface seval-handler-interface
(export seval-handler))
(define-structure seval-handler seval-handler-interface
(open scsh ; syscalls & INDEX (open scsh ; syscalls & INDEX
condhax ; WHEN, ? for COND
switch-syntax ; Conditionals
httpd-error httpd-error
httpd-core ; REQUEST record type, HTTP-ERROR & reply codes, httpd-core ; REQUEST record type, HTTP-ERROR & reply codes,
; v0.9-request, reply formatting stuff. ; v0.9-request, reply formatting stuff.
uri-package ; UNESCAPE-URI uri ; UNESCAPE-URI
htmlout-package ; Formatted HTML output htmlout ; Formatted HTML output
error-package ; ERROR error-package ; ERROR
pp ; Pretty-printer pp ; Pretty-printer
strings rfc822 strings rfc822
@ -357,10 +388,14 @@
scheme) scheme)
(files seval)) (files seval))
(define-structure httpd-access-control (export access-denier
access-allower (define-interface httpd-access-control-interface
access-controller (export access-denier
access-controlled-handler) access-allower
access-controller
access-controlled-handler))
(define-structure httpd-access-control httpd-access-control-interface
(open big-scheme (open big-scheme
strings strings
httpd-core httpd-core
@ -369,56 +404,68 @@
scheme) scheme)
(files httpd-access-control)) (files httpd-access-control))
(define-structure info-gateway (export info-handler
find-info-file (define-interface info-gateway-interface
info-gateway-error) (export info-handler
find-info-file
info-gateway-error))
(define-structure info-gateway info-gateway-interface
(open big-scheme (open big-scheme
string-lib string-lib
conditions signals handle conditions signals handle
switch-syntax
condhax
strings strings
htmlout-package htmlout
httpd-core httpd-core
httpd-error httpd-error
url-package url
uri-package uri
scsh scsh
scheme) scheme)
(files info-gateway)) (files info-gateway))
(define-structure rman-gateway (export rman-handler
man (define-interface rman-gateway-interface
parse-man-entry (export rman-handler
cat-man-page man
find-man-file parse-man-entry
file->man-directory cat-man-page
cat-n-decode find-man-file
nroff-n-decode) file->man-directory
cat-n-decode
nroff-n-decode))
(define-structure rman-gateway rman-gateway-interface
(open httpd-core (open httpd-core
httpd-error httpd-error
conditions conditions
url-package url
uri-package uri
htmlout-package htmlout
httpd-basic-handlers httpd-basic-handlers
switch-syntax
condhax
handle-fatal-error handle-fatal-error
scsh scsh
let-opt let-opt
scheme) scheme)
(files rman-gateway)) (files rman-gateway))
(define-structure ls (export ls
arguments->ls-flags) (define-interface ls-interface
(export ls
arguments->ls-flags))
(define-structure ls ls-interface
(open scheme handle (open scheme handle
big-scheme bitwise big-scheme bitwise
scsh) scsh)
(files ls)) (files ls))
(define-structure ftpd (export ftpd
ftpd-inetd) (define-interface ftpd-interface
(export ftpd
ftpd-inetd))
(define-structure ftpd ftpd-interface
(open scheme (open scheme
conditions handle signals conditions handle signals
structure-refs structure-refs
@ -432,3 +479,72 @@
crlf-io strings ls) crlf-io strings ls)
(access big-scheme) (access big-scheme)
(files ftpd)) (files ftpd))
;;; Here is toothless.scm
;;; Shouldn't the definitions be in an extra file? Andreas.
;;; -*- Scheme -*-
;;; This file defines a Scheme 48 module that is R4RS without features that
;;; could examine or effect the file system. You can also use it
;;; as a model of how to execute code in other protected environments
;;; in S48.
;;;
;;; Copyright (c) 1995 by Olin Shivers.
(define-interface loser-interface (export loser))
(define-structure loser (export loser)
(open scheme error-package)
(begin (define (loser name)
(lambda x (error "Illegal call" name)))))
;;; The toothless structure is R4RS without the dangerous procedures.
(define-interface toothless-interface (interface-of scheme))
(define-structure toothless toothless-interface
(open scheme loser)
(begin
(define call-with-input-file (loser "call-with-input-file"))
(define call-with-output-file (loser "call-with-output-file"))
(define load (loser "load"))
(define open-input-file (loser "open-input-file"))
(define open-output-file (loser "open-output-file"))
(define transcript-on (loser "transcript-on"))
(define with-input-from-file (loser "with-input-from-file"))
(define with-input-to-file (loser "with-input-to-file"))
(define eval (loser "eval"))
(define interaction-environment (loser "interaction-environment"))
(define scheme-report-environment (loser "scheme-report-environment"))))
;;; (EVAL-SAFELEY exp)
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;; Create a brand new package, import the TOOTHLESS structure, and
;;; evaluate EXP in it. When the evaluation is done, you throw away
;;; the environment, so EXP's side-effects don't persist from one
;;; EVAL-SAFELY call to the next. If EXP raises an error exception,
;;; we abort and return #f.
(define-interface toothless-eval-interface (export eval-safely))
(define-structure toothless-eval toothless-eval-interface
(open evaluation ; eval
package-commands-internal ; config-package, get-reflective-tower
packages ; structure-package, make-simple-package
environments ; environment-ref
handle ; ignore-errors
scheme)
(access toothless) ; Force it to be loaded.
(begin
(define toothless-struct (environment-ref (config-package) 'toothless))
(define toothless-package (structure-package toothless-struct))
(define (new-safe-package)
(make-simple-package (list toothless-struct) #t
(get-reflective-tower toothless-package) ; ???
'safe-env))
(define (eval-safely exp)
(ignore-errors (lambda () (eval exp (new-safe-package)))))))

47
rfc822.scm
View File

@ -109,19 +109,20 @@
(values #f #f) ; Blank line or EOF terminates header text. (values #f #f) ; Blank line or EOF terminates header text.
(? ((string-index line1 #\:) => ; Find the colon and (cond
(lambda (colon) ; split out field name. ((string-index line1 #\:) => ; Find the colon and
(let ((name (string->symbol-pref (substring line1 0 colon)))) (lambda (colon) ; split out field name.
;; Read in continuation lines. (let ((name (string->symbol-pref (substring line1 0 colon))))
(let lp ((lines (list (substring line1 ;; Read in continuation lines.
(+ colon 1) (let lp ((lines (list (substring line1
(string-length line1))))) (+ colon 1)
(let ((c (peek-char port))) ; Could return EOF. (string-length line1)))))
(let ((c (peek-char port))) ; Could return EOF.
;;; RFC822: continuous lines has to start with a space or a htab ;;; RFC822: continuous lines has to start with a space or a htab
(if (or (eqv? c #\space) (eqv? c htab)) (if (or (eqv? c #\space) (eqv? c htab))
(lp (cons (read-line port) lines)) (lp (cons (read-line port) lines))
(values name (reverse lines)))))))) (values name (reverse lines))))))))
(else (error "Illegal RFC 822 field syntax." line1)))))) ; No : (else (error "Illegal RFC 822 field syntax." line1)))))) ; No :
;;; (read-rfc822-headers [port]) ;;; (read-rfc822-headers [port])
@ -146,17 +147,17 @@
(define (%read-rfc822-headers read-line port) (define (%read-rfc822-headers read-line port)
(let lp ((alist '())) (let lp ((alist '()))
(receive (field val) (%read-rfc822-field read-line port) (receive (field val) (%read-rfc822-field read-line port)
(? (field (? ((assq field alist) => (cond (field (cond ((assq field alist) =>
(lambda (entry) (lambda (entry)
(set-cdr! entry (cons val (cdr entry))) (set-cdr! entry (cons val (cdr entry)))
(lp alist))) (lp alist)))
(else (lp (cons (list field val) alist))))) (else (lp (cons (list field val) alist)))))
;; We are done. Reverse the order of each entry and return. ;; We are done. Reverse the order of each entry and return.
(else (for-each (lambda (entry) (else (for-each (lambda (entry)
(set-cdr! entry (reverse (cdr entry)))) (set-cdr! entry (reverse (cdr entry))))
alist) alist)
alist))))) alist)))))
;;; (rejoin-header-lines alist [separator]) ;;; (rejoin-header-lines alist [separator])
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

45
rman-gateway.scm
View File

@ -33,29 +33,30 @@
(man (:optional maybe-man man))) (man (:optional maybe-man man)))
(lambda (path req) (lambda (path req)
(switch string=? (request:method req) (let ((request-method (request:method req)))
(("GET") (cond
(with-fatal-error-handler ((string=? request-method "GET")
(lambda (c decline) (with-fatal-error-handler
(cond (lambda (c decline)
((http-error? c) (cond
(apply http-error (car (condition-stuff c)) req ((http-error? c)
(cddr (condition-stuff c)))) (apply http-error (car (condition-stuff c)) req
(else (cddr (condition-stuff c))))
(decline)))) (else
(decline))))
(if (not (v0.9-request? req)) (if (not (v0.9-request? req))
(begin (begin
(begin-http-header #t http-reply/ok) (begin-http-header #t http-reply/ok)
(write-string "Content-type: text/html\r\n") (write-string "Content-type: text/html\r\n")
(write-string "\r\n"))) (write-string "\r\n")))
(receive (man-path entry and-then) (parse-man-url (request:url req)) (receive (man-path entry and-then) (parse-man-url (request:url req))
(emit-man-page entry man man-path and-then reference-template)) (emit-man-page entry man man-path and-then reference-template))
(with-tag #t address () (with-tag #t address ()
(display address)))) (display address))))
(else (http-error http-reply/method-not-allowed req)))))) (else (http-error http-reply/method-not-allowed req)))))))
(define (cat-man-page key section) (define (cat-man-page key section)
(let ((title (if section (let ((title (if section

15
scheme-program-server.scm
View File

@ -17,10 +17,11 @@
(http-log " Argumente : ~s~%" arglist) (http-log " Argumente : ~s~%" arglist)
(http-log "----------------------------------------~%") (http-log "----------------------------------------~%")
(switch string=? (request:method req) (let ((request-method (request:method req)))
(("GET" "POST") ; Could do others also. (if (or (string=? request-method "GET")
(wait (fork doit))) (string=? request-method "POST")) ; Could do others also.
(else (http-error http-reply/method-not-allowed req))))) (wait (fork doit))
(http-error http-reply/method-not-allowed req))))
(http-error http-reply/bad-request req "Error ")))) (http-error http-reply/bad-request req "Error "))))
@ -32,9 +33,9 @@
(define (split-and-decode-search-spec s) (define (split-and-decode-search-spec s)
(let recur ((i 0)) (let recur ((i 0))
(? ((index s #\+ i) => (lambda (j) (cons (unescape-uri s i j) (cond ((index s #\+ i) => (lambda (j) (cons (unescape-uri s i j)
(recur (+ j 1))))) (recur (+ j 1)))))
(else (list (unescape-uri s i (string-length s))))))) (else (list (unescape-uri s i (string-length s)))))))
(define url-path) (define url-path)
(define script-path) (define script-path)

94
seval.scm
View File

@ -52,37 +52,40 @@
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(define (seval-handler path req) (define (seval-handler path req)
(switch string=? (request:method req) (let ((request-method (request:method req)))
(("POST") ; Could do others also. (cond
((string=? request-method "POST") ; Could do others also.
(let ((modern-protocol? (not (v0.9-request? req)))) (let ((modern-protocol? (not (v0.9-request? req))))
(when modern-protocol? (if modern-protocol?
(begin-http-header #t 200) (begin
(write-string "Content-type: text/html\r\n\r\n")) (begin-http-header #t 200)
(with-tag #t HEAD () (write-string "Content-type: text/html\r\n\r\n")))
(newline) (with-tag #t HEAD ()
(emit-title #t "Scheme program output")) (newline)
(newline)) (emit-title #t "Scheme program output"))
(newline))
(with-tag #t BODY ()
(newline)
(let ((sexp (read-request-sexp req)))
(do/timeout
10
(receive vals
;; Do the computation.
(begin (emit-header #t 2 "Output from execution")
(newline)
(with-tag #t PRE ()
(newline)
(force-output) ; In case we're gunned down.
(eval-safely sexp)))
;; Pretty-print the returned value(s).
(emit-header #t 2 "Return value(s)")
(with-tag #t PRE ()
(for-each p vals)))))))
(with-tag #t BODY () (else (http-error http-reply/method-not-allowed #f req)))))
(newline)
(let ((sexp (read-request-sexp req)))
(do/timeout 10
(receive vals
;; Do the computation.
(begin (emit-header #t 2 "Output from execution")
(newline)
(with-tag #t PRE ()
(newline)
(force-output) ; In case we're gunned down.
(eval-safely sexp)))
;; Pretty-print the returned value(s).
(emit-header #t 2 "Return value(s)")
(with-tag #t PRE ()
(for-each p vals)))))))
(else (http-error http-reply/method-not-allowed #f req))))
;;; Read an HTTP request entity body from stdin. The Content-length: ;;; Read an HTTP request entity body from stdin. The Content-length:
@ -93,19 +96,20 @@
;;; and return it. ;;; and return it.
(define (read-request-sexp req) (define (read-request-sexp req)
(? ((get-header (request:headers req) 'content-length) => (cond
(lambda (cl-str) ; Take the first Content-length: header, ((get-header (request:headers req) 'content-length) =>
(let* ((cl-start (skip-whitespace cl-str)) ; skip whitespace, (lambda (cl-str) ; Take the first Content-length: header,
(cl (if cl-start ; & convert to (let* ((cl-start (skip-whitespace cl-str)) ; skip whitespace,
(string->number (substring cl-str ; a number. (cl (if cl-start ; & convert to
cl-start (string->number (substring cl-str ; a number.
(string-length cl-str))) cl-start
0)) ; All whitespace?? -- WTF. (string-length cl-str)))
(qs (read-string cl)) ; Read in CL chars, 0)) ; All whitespace?? -- WTF.
(q (parse-html-form-query qs)) ; and parse them up. (qs (read-string cl)) ; Read in CL chars,
(s (? ((assoc "program" q) => cdr) (q (parse-html-form-query qs)) ; and parse them up.
(else (error "No program in entity body."))))) (s (cond ((assoc "program" q) => cdr)
(http-log "Seval sexp:~%~s~%" s) (else (error "No program in entity body.")))))
(read (make-string-input-port s))))) (http-log "Seval sexp:~%~s~%" s)
(else (http-error http-reply/bad-request req (read (make-string-input-port s)))))
"No Content-length: field in POST request.")))) (else (http-error http-reply/bad-request req
"No Content-length: field in POST request."))))

46
smtp.scm
View File

@ -90,8 +90,8 @@
(define (filter-map f lis) (define (filter-map f lis)
(let lp ((ans '()) (lis lis)) (let lp ((ans '()) (lis lis))
(if (pair? lis) (if (pair? lis)
(lp (? ((f (car lis)) => (lambda (val) (cons val ans))) (lp (cond ((f (car lis)) => (lambda (val) (cons val ans)))
(else ans)) (else ans))
(cdr lis)) (cdr lis))
(reverse ans)))) (reverse ans))))
@ -269,20 +269,20 @@
;; We got a positive acknowledgement for the DATA msg, ;; We got a positive acknowledgement for the DATA msg,
;; now send the message body. ;; now send the message body.
(let ((p (socket:outport socket))) (let ((p (socket:outport socket)))
(? ((string? message) (cond ((string? message)
(receive (data last-char) (smtp-stuff message #f) (receive (data last-char) (smtp-stuff message #f)
(write-string data p))) (write-string data p)))
((input-port? message) ((input-port? message)
(let lp ((last-char #f)) (let lp ((last-char #f))
(? ((read-string/partial 1024 message) => (cond ((read-string/partial 1024 message) =>
(lambda (chunk) (lambda (chunk)
(receive (data last-char) (receive (data last-char)
(smtp-stuff chunk last-char) (smtp-stuff chunk last-char)
(write-string data p) (write-string data p)
(lp last-char))))))) (lp last-char)))))))
(else (error "Message must be string or input-port."))) (else (error "Message must be string or input-port.")))
(write-string "\r\n.\r\n" p) (write-string "\r\n.\r\n" p)
(force-output p) (force-output p)
@ -320,7 +320,7 @@
(let ((quit (nullary-smtp-command "QUIT"))) (let ((quit (nullary-smtp-command "QUIT")))
(lambda (socket) (lambda (socket)
(receive (code text) (quit socket) ; Quit & close socket gracefully. (receive (code text) (quit socket) ; Quit & close socket gracefully.
(switchq = code (case code
((221 421)) ((221 421))
(else (close-socket socket))) ; But close in any event. (else (close-socket socket))) ; But close in any event.
(values code text))))) (values code text)))))
@ -339,7 +339,7 @@
(define (handle-smtp-reply socket) (define (handle-smtp-reply socket)
(receive (code text) (read-smtp-reply (socket:inport socket)) (receive (code text) (read-smtp-reply (socket:inport socket))
(switchq = code (case code
((221 421) (close-socket socket))) ; All done. ((221 421) (close-socket socket))) ; All done.
(values code text))) (values code text)))
@ -423,12 +423,12 @@
(if (< i slen) (if (< i slen)
(let ((c (string-ref s i))) (let ((c (string-ref s i)))
(string-set! ns j c) (string-set! ns j c)
(? ((and nl? (char=? c #\.)) (cond ((and nl? (char=? c #\.))
(string-set! ns (+ j 1) #\.) (string-set! ns (+ j 1) #\.)
(lp #f (+ i 1) (+ j 2))) (lp #f (+ i 1) (+ j 2)))
(else (lp (char=? c #\newline) (+ i 1) (+ j 1))))))) (else (lp (char=? c #\newline) (+ i 1) (+ j 1)))))))
ns)) ns))
(if (zero? slen) pchar (string-ref s (- slen 1)))))) ; LAST-CHAR (if (zero? slen) pchar (string-ref s (- slen 1)))))) ; LAST-CHAR
;;; Reply codes ;;; Reply codes

80
uri.scm
View File

@ -110,16 +110,17 @@
(let lp ((i start) (j 0)) ; sweap over the string (let lp ((i start) (j 0)) ; sweap over the string
(if (< j nlen) (if (< j nlen)
(lp (? ((esc-seq? i) ; unescape (lp (cond
((esc-seq? i) ; unescape
; escape-sequence ; escape-sequence
(string-set! ns j (string-set! ns j
(let ((d1 (string-ref s (+ i 1))) (let ((d1 (string-ref s (+ i 1)))
(d2 (string-ref s (+ i 2)))) (d2 (string-ref s (+ i 2))))
(ascii->char (+ (* 16 (hexchar->int d1)) (ascii->char (+ (* 16 (hexchar->int d1))
(hexchar->int d2))))) (hexchar->int d2)))))
(+ i 3)) (+ i 3))
(else (string-set! ns j (string-ref s i)) (else (string-set! ns j (string-ref s i))
(+ i 1))) (+ i 1)))
(+ j 1)))) (+ j 1))))
ns))))) ns)))))
@ -174,18 +175,19 @@
; character to escape with %ff where ff ; character to escape with %ff where ff
; is the ascii-code in hexadecimal ; is the ascii-code in hexadecimal
; notation ; notation
(+ i (? ((char-set-contains? escaped-chars c) (+ i (cond
(string-set! ns i #\%) ((char-set-contains? escaped-chars c)
(let* ((d (char->ascii c)) (string-set! ns i #\%)
(dhi (bitwise-and (arithmetic-shift d -4) #xF)) (let* ((d (char->ascii c))
(dlo (bitwise-and d #xF))) (dhi (bitwise-and (arithmetic-shift d -4) #xF))
(string-set! ns (+ i 1) (dlo (bitwise-and d #xF)))
(int->hexchar dhi)) (string-set! ns (+ i 1)
(string-set! ns (+ i 2) (int->hexchar dhi))
(int->hexchar dlo))) (string-set! ns (+ i 2)
3) (int->hexchar dlo)))
(else (string-set! ns i c) 3)
1)))) (else (string-set! ns i c)
1))))
s) s)
ns))))) ns)))))
@ -213,20 +215,21 @@
(rhead '()) ; CP prefix, reversed. (rhead '()) ; CP prefix, reversed.
(j 0)) ; J counts sequential / (j 0)) ; J counts sequential /
(? ((and (pair? cp-tail) (string=? (car cp-tail) "")) ; More ""'s (cond
(lp (cdr cp-tail) ((and (pair? cp-tail) (string=? (car cp-tail) "")) ; More ""'s
(cons (car cp-tail) rhead) (lp (cdr cp-tail)
(+ j 0))) (cons (car cp-tail) rhead)
(+ j 0)))
((= j numsl) ; Win ((= j numsl) ; Win
(values cscheme (simplify-uri-path (rev-append rhead p)))) (values cscheme (simplify-uri-path (rev-append rhead p))))
((pair? cp-tail) ; Keep looking. ((pair? cp-tail) ; Keep looking.
(lp (cdr cp-tail) (lp (cdr cp-tail)
(cons (car cp-tail) rhead) (cons (car cp-tail) rhead)
1)) 1))
(else (values #f #f))))) ; Lose. (else (values #f #f))))) ; Lose.
;; P doesn't begin with a slash. ;; P doesn't begin with a slash.
@ -245,12 +248,13 @@
(define (split-uri-path uri start end) ; Split at /'s (infix grammar). (define (split-uri-path uri start end) ; Split at /'s (infix grammar).
(let split ((i start)) ; "" -> ("") (let split ((i start)) ; "" -> ("")
(? ((>= i end) '("")) (cond
((string-index uri #\/ i) => ((>= i end) '(""))
(lambda (slash) ((string-index uri #\/ i) =>
(cons (substring uri i slash) (lambda (slash)
(split (+ slash 1))))) (cons (substring uri i slash)
(else (list (substring uri i end)))))) (split (+ slash 1)))))
(else (list (substring uri i end))))))
;;; The elements of PLIST must be escaped in case they contain slashes. ;;; The elements of PLIST must be escaped in case they contain slashes.

12
url.scm
View File

@ -144,9 +144,9 @@
(userhost->string (http-url:userhost url)) (userhost->string (http-url:userhost url))
"/" "/"
(uri-path-list->path (map escape-uri (http-url:path url))) (uri-path-list->path (map escape-uri (http-url:path url)))
(? ((http-url:search url) => (cond ((http-url:search url) =>
(lambda (s) (string-append "?" s))) (lambda (s) (string-append "?" s)))
(else "")) (else ""))
(? ((http-url:frag-id url) => (cond ((http-url:frag-id url) =>
(lambda (fi) (string-append "#" fi))) (lambda (fi) (string-append "#" fi)))
(else "")))) (else ""))))