File:  [gforth] / gforth / httpd.fs
Revision 1.4: download - view: text, annotated - select for diffs
Sun Apr 9 20:57:25 2000 UTC (19 years, 7 months ago) by pazsan
Branches: MAIN
CVS tags: HEAD
Improved color highlighting
Install new files, too
Some corrections to httpd

    1: #! /usr/local/bin/gforth
    2: 
    3: warnings off
    4: 
    5: include string.fs
    6: 
    7: Variable url
    8: Variable posted
    9: Variable url-args
   10: Variable protocol
   11: Variable data
   12: Variable active
   13: Variable command?
   14: 
   15: : get ( addr -- )  name rot $! ;
   16: : get-rest ( addr -- )  source >in @ /string dup >in +! rot $! ;
   17: 
   18: wordlist constant values
   19: wordlist constant commands
   20: 
   21: : value:  ( -- )  name
   22:   Forth definitions 2dup 1- nextname Variable
   23:   values set-current nextname here cell - Create ,
   24:   DOES> @ get-rest ;
   25: : >values  values 1 set-order command? off ;
   26: 
   27: \ HTTP protocol commands                               26mar00py
   28: 
   29: : rework-% ( add -- ) { url }  base @ >r hex
   30:     0 url $@len 0 ?DO
   31: 	url $@ drop I + c@ dup '% = IF
   32: 	    drop 0. url $@ I 1+ /string
   33: 	    2 min dup >r >number r> swap - >r 2drop
   34: 	ELSE  0 >r  THEN  over url $@ drop + c!  1+
   35:     r> 1+ +LOOP  url $!len
   36:     r> base ! ;
   37: 
   38: : rework-? ( addr -- ) { url }
   39:     url $@ tuck '? scan tuck dup 0<> - url-args $! - url $!len ;
   40: 
   41: : get-url  url get protocol get-rest
   42:     url rework-? url rework-% >values ;
   43: 
   44: commands set-current
   45: 
   46: : GET   get-url data on  active off ;
   47: : POST  get-url data on  active on  ;
   48: : HEAD  get-url data off active off ;
   49: 
   50: \ HTTP protocol values                                 26mar00py
   51: 
   52: values set-current
   53: 
   54: value: User-Agent:
   55: value: Pragma:
   56: value: Host:
   57: value: Accept:
   58: value: Accept-Encoding:
   59: value: Accept-Language:
   60: value: Accept-Charset:
   61: value: Via:
   62: value: X-Forwarded-For:
   63: value: Cache-Control:
   64: value: Connection:
   65: value: Referer:
   66: value: Content-Type:
   67: value: Content-Length:
   68: 
   69: definitions
   70: 
   71: Variable maxnum
   72: 
   73: : ?cr ( -- )
   74:   #tib @ 1 >= IF  source 1- + c@ #cr = #tib +!  THEN ;
   75: : refill-loop ( -- flag )
   76:   BEGIN  refill ?cr  WHILE  interpret  >in @ 0=  UNTIL
   77:   true  ELSE  maxnum off false  THEN ;
   78: : get-input ( -- flag ior )
   79:   s" /nosuchfile" url $!  s" HTTP/1.0" protocol $!
   80:   s" close" connection $!
   81:   infile-id push-file loadfile !  loadline off  blk off
   82:   commands 1 set-order  command? on  ['] refill-loop catch
   83:   active @ IF  s" " posted $! Content-Length $@ snumber? drop
   84:       posted $!len  posted $@ infile-id read-file throw drop
   85:   THEN  only forth also  pop-file ;
   86: 
   87: \ Keep-Alive handling                                  26mar00py
   88: 
   89: : .connection ( -- )
   90:   ." Connection: "
   91:   connection $@ s" Keep-Alive" compare 0= maxnum @ 0> and
   92:   IF  connection $@ type cr
   93:       ." Keep-Alive: timeout=15, max=" maxnum @ 0 .r cr
   94:       -1 maxnum +!  ELSE  ." close" cr maxnum off  THEN ;
   95: 
   96: \ Use Forth as server-side script language             26mar00py
   97: 
   98: : $> ( -- )
   99:     BEGIN  source >in @ /string s" <$" search  0= WHILE
  100:         type cr refill  0= UNTIL  EXIT  THEN
  101:     nip source >in @ /string rot - dup 2 + >in +! type ;
  102: : <HTML> ( -- )  ." <HTML>" $> ;
  103: 
  104: \ Rework HTML directory                                26mar00py
  105: 
  106: Variable htmldir
  107: 
  108: : rework-htmldir ( addr u -- addr' u' / ior )
  109:   htmldir $!
  110:   htmldir $@ 1 min s" ~" compare 0=
  111:   IF    s" /.html-data" htmldir dup $@ 2dup '/ scan
  112:         nip - nip $ins
  113:   ELSE  s" /usr/local/httpd/htdocs/" htmldir 0 $ins  THEN
  114:   htmldir $@ 1- 0 max + c@ '/ = htmldir $@len 0= or
  115:   IF  s" index.html" htmldir dup $@len $ins  THEN
  116:   htmldir $@ file-status nip ?dup ?EXIT
  117:   htmldir $@ ;
  118: 
  119: \ MIME type handling                                   26mar00py
  120: 
  121: : >mime ( addr u -- mime u' )  2dup tuck over + 1- ?DO
  122:   I c@ '. = ?LEAVE  1-  -1 +LOOP  /string ;
  123: 
  124: : >file ( addr u -- size fd )
  125:   r/o bin open-file throw >r
  126:   r@ file-size throw drop
  127:   ." Accept-Ranges: bytes" cr
  128:   ." Content-Length: " dup 0 .r cr r> ;
  129: : transparent ( size fd -- ) { fd }
  130:     $4000 allocate throw swap dup 0 ?DO
  131: 	2dup over swap $4000 min fd read-file throw type
  132: 	$4000 - $4000 +LOOP  drop
  133:     free fd close-file throw throw ;
  134: 
  135: : transparent: ( addr u -- ) Create  here over 1+ allot place
  136:   DOES>  >r  >file
  137:   .connection
  138:   ." Content-Type: "  r> count type cr cr
  139:   data @ IF  transparent  ELSE  nip close-file throw  THEN ;
  140: 
  141: \ mime types                                           26mar00py
  142: 
  143: : mime-read ( addr u -- )  r/o open-file throw
  144:     push-file loadfile !  0 loadline ! blk off
  145:     BEGIN  refill  WHILE  name
  146: 	BEGIN  >in @ >r name nip  WHILE
  147: 	    r> >in ! 2dup transparent:  REPEAT
  148: 	2drop rdrop
  149:     REPEAT  loadfile @ close-file pop-file throw ;
  150: 
  151: : lastrequest
  152:   ." Connection: close" cr maxnum off
  153:   ." Content-Type: text/html" cr cr ;
  154: 
  155: wordlist constant mime
  156: mime set-current
  157: 
  158: : shtml ( addr u -- )  lastrequest
  159:     data @ IF  included  ELSE  2drop  THEN ;
  160: 
  161: s" application/pgp-signature" transparent: sig
  162: s" application/x-bzip2" transparent: bz2
  163: s" application/x-gzip" transparent: gz
  164: s" /etc/mime.types" mime-read
  165: 
  166: definitions
  167: 
  168: s" text/plain" transparent: txt
  169: 
  170: \ http errors                                          26mar00py
  171: 
  172: : .server ." Server: Gforth httpd/0.1 ("
  173:     s" os-class" environment? IF  type  THEN  ." )" cr ;
  174: : .ok   ." HTTP/1.1 200 OK" cr .server ;
  175: : html-error ( n addr u -- )
  176:     ." HTTP/1.1 " 2 pick . 2dup type cr .server
  177:     2 pick &405 = IF ." Allow: GET, HEAD, POST" cr  THEN  lastrequest
  178:     ." <HTML><HEAD><TITLE>" 2 pick . 2dup type ." </TITLE></HEAD>" cr
  179:     ." <BODY><H1>" type drop ." </H1>" cr ;
  180: : .trailer ( -- )
  181:     ." <HR><ADDRESS>Gforth httpd 0.1</ADDRESS>" cr
  182:     ." </BODY></HTML>" cr ;
  183: : .nok  command? @ IF  &405 s" Method Not Allowed"
  184:     ELSE  &400 s" Bad Request"  THEN  html-error
  185:     ." <P>Your browser sent a request that this server could not understand.</P>" cr
  186:     ." <P>Invalid request in: <CODE>" error-stack cell+ 2@ swap type
  187:     ." </CODE></P>" cr .trailer ;
  188: : .nofile  &404 s" Not Found" html-error
  189:     ." <P>The requested URL <CODE>" url $@ type
  190:     ." </CODE> was not found on this server</P>" cr .trailer ;
  191: 
  192: \ http server                                          26mar00py
  193: 
  194: : http  get-input  IF  .nok  ELSE
  195:     IF  url $@ 1 /string rework-htmldir
  196: 	dup 0< IF  drop .nofile
  197: 	ELSE  .ok  2dup >mime mime search-wordlist
  198: 	    0= IF  ['] txt  THEN  catch IF  maxnum off THEN
  199: 	THEN  THEN  THEN  outfile-id flush-file throw ;
  200: 
  201: : httpd  ( n -- )  maxnum !
  202:   BEGIN  ['] http catch  maxnum @ 0= or  UNTIL ;
  203: 
  204: script? [IF]  :noname &100 httpd bye ; is bootmessage  [THEN]

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