File:  [gforth] / gforth / httpd.fs
Revision 1.8: download - view: text, annotated - select for diffs
Sun Oct 29 20:27:02 2000 UTC (19 years, 1 month ago) by pazsan
Branches: MAIN
CVS tags: HEAD
Added new input handling (OO approach). Only available if capability
new-input is true (so setting that to false in machpc.fs gets you the old
input handling back).

    1: #! /usr/local/bin/gforth
    2: 
    3: \ Copyright (C) 2000 Free Software Foundation, Inc.
    4: 
    5: \ This file is part of Gforth.
    6: 
    7: \ Gforth is free software; you can redistribute it and/or
    8: \ modify it under the terms of the GNU General Public License
    9: \ as published by the Free Software Foundation; either version 2
   10: \ of the License, or (at your option) any later version.
   11: 
   12: \ This program is distributed in the hope that it will be useful,
   13: \ but WITHOUT ANY WARRANTY; without even the implied warranty of
   14: \ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   15: \ GNU General Public License for more details.
   16: 
   17: \ You should have received a copy of the GNU General Public License
   18: \ along with this program; if not, write to the Free Software
   19: \ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
   20: 
   21: warnings off
   22: 
   23: require string.fs
   24: 
   25: Variable url
   26: Variable posted
   27: Variable url-args
   28: Variable protocol
   29: Variable data
   30: Variable active
   31: Variable command?
   32: 
   33: : get ( addr -- )  name rot $! ;
   34: : get-rest ( addr -- )  source >in @ /string dup >in +! rot $! ;
   35: 
   36: wordlist constant values
   37: wordlist constant commands
   38: 
   39: : value:  ( -- )  name
   40:   Forth definitions 2dup 1- nextname Variable
   41:   values set-current nextname here cell - Create ,
   42:   DOES> @ get-rest ;
   43: : >values  values 1 set-order command? off ;
   44: 
   45: \ HTTP protocol commands                               26mar00py
   46: 
   47: : rework-% ( add -- ) { url }  base @ >r hex
   48:     0 url $@len 0 ?DO
   49: 	url $@ drop I + c@ dup '% = IF
   50: 	    drop 0. url $@ I 1+ /string
   51: 	    2 min dup >r >number r> swap - >r 2drop
   52: 	ELSE  0 >r  THEN  over url $@ drop + c!  1+
   53:     r> 1+ +LOOP  url $!len
   54:     r> base ! ;
   55: 
   56: : rework-? ( addr -- )
   57:     dup >r $@ '? $split url-args $! nip r> $!len ;
   58: 
   59: : get-url ( -- ) url get protocol get-rest
   60:     url rework-? url rework-% >values ;
   61: 
   62: commands set-current
   63: 
   64: : GET   get-url data on  active off ;
   65: : POST  get-url data on  active on  ;
   66: : HEAD  get-url data off active off ;
   67: 
   68: \ HTTP protocol values                                 26mar00py
   69: 
   70: values set-current
   71: 
   72: value: User-Agent:
   73: value: Pragma:
   74: value: Host:
   75: value: Accept:
   76: value: Accept-Encoding:
   77: value: Accept-Language:
   78: value: Accept-Charset:
   79: value: Via:
   80: value: X-Forwarded-For:
   81: value: Cache-Control:
   82: value: Connection:
   83: value: Referer:
   84: value: Content-Type:
   85: value: Content-Length:
   86: 
   87: definitions
   88: 
   89: Variable maxnum
   90: 
   91: : ?cr ( -- )
   92:   #tib @ 1 >= IF  source 1- + c@ #cr = #tib +!  THEN ;
   93: : refill-loop ( -- flag )
   94:   BEGIN  refill ?cr  WHILE  interpret  >in @ 0=  UNTIL
   95:   true  ELSE  maxnum off false  THEN ;
   96: : get-input ( -- flag ior )
   97:   s" /nosuchfile" url $!  s" HTTP/1.0" protocol $!
   98:   s" close" connection $!
   99:   infile-id push-file loadfile !  loadline off  blk off
  100:   commands 1 set-order  command? on  ['] refill-loop catch
  101:   active @ IF  s" " posted $! Content-Length $@ snumber? drop
  102:       posted $!len  posted $@ infile-id read-file throw drop
  103:   THEN  only forth also  pop-file ;
  104: 
  105: \ Rework HTML directory                                26mar00py
  106: 
  107: Variable htmldir
  108: 
  109: : rework-htmldir ( addr u -- addr' u' / ior )
  110:   htmldir $!
  111:   htmldir $@ 1 min s" ~" compare 0=
  112:   IF    s" /.html-data" htmldir dup $@ 2dup '/ scan
  113:         nip - nip $ins
  114:   ELSE  s" /usr/local/httpd/htdocs/" htmldir 0 $ins  THEN
  115:   htmldir $@ 1- 0 max + c@ '/ = htmldir $@len 0= or
  116:   IF  s" index.html" htmldir dup $@len $ins  THEN
  117:   htmldir $@ file-status nip ?dup ?EXIT
  118:   htmldir $@ ;
  119: 
  120: \ MIME type handling                                   26mar00py
  121: 
  122: : >mime ( addr u -- mime u' )  2dup tuck over + 1- ?DO
  123:   I c@ '. = ?LEAVE  1-  -1 +LOOP  /string ;
  124: 
  125: : >file ( addr u -- size fd )
  126:   r/o bin open-file throw >r
  127:   r@ file-size throw drop
  128:   ." Accept-Ranges: bytes" cr
  129:   ." Content-Length: " dup 0 .r cr r> ;
  130: : transparent ( size fd -- ) { fd }
  131:     $4000 allocate throw swap dup 0 ?DO
  132: 	2dup over swap $4000 min fd read-file throw type
  133: 	$4000 - $4000 +LOOP  drop
  134:     free fd close-file throw throw ;
  135: 
  136: \ Keep-Alive handling                                  26mar00py
  137: 
  138: : .connection ( -- )
  139:   ." Connection: "
  140:   connection $@ s" Keep-Alive" compare 0= maxnum @ 0> and
  141:   IF  connection $@ type cr
  142:       ." Keep-Alive: timeout=15, max=" maxnum @ 0 .r cr
  143:       -1 maxnum +!  ELSE  ." close" cr maxnum off  THEN ;
  144: 
  145: : transparent: ( addr u -- ) Create  here over 1+ allot place
  146:   DOES>  >r  >file
  147:   .connection
  148:   ." Content-Type: "  r> count type cr cr
  149:   data @ IF  transparent  ELSE  nip close-file throw  THEN ;
  150: 
  151: \ mime types                                           26mar00py
  152: 
  153: : mime-read ( addr u -- )  r/o open-file throw
  154:     push-file loadfile !  0 loadline ! blk off
  155:     BEGIN  refill  WHILE  name
  156: 	BEGIN  >in @ >r name nip  WHILE
  157: 	    r> >in ! 2dup transparent:  REPEAT
  158: 	2drop rdrop
  159:     REPEAT  loadfile @ close-file pop-file throw ;
  160: 
  161: : lastrequest
  162:   ." Connection: close" cr maxnum off
  163:   ." Content-Type: text/html" cr cr ;
  164: 
  165: wordlist constant mime
  166: mime set-current
  167: 
  168: : shtml ( addr u -- )  lastrequest
  169:     data @ IF  included  ELSE  2drop  THEN ;
  170: 
  171: s" application/pgp-signature" transparent: sig
  172: s" application/x-bzip2" transparent: bz2
  173: s" application/x-gzip" transparent: gz
  174: s" /etc/mime.types" mime-read
  175: 
  176: definitions
  177: 
  178: s" text/plain" transparent: txt
  179: 
  180: \ http errors                                          26mar00py
  181: 
  182: : .server ( -- )  ." Server: Gforth httpd/0.1 ("
  183:     s" os-class" environment? IF  type  THEN  ." )" cr ;
  184: : .ok  ( -- ) ." HTTP/1.1 200 OK" cr .server ;
  185: : html-error ( n addr u -- )
  186:     ." HTTP/1.1 " 2 pick . 2dup type cr .server
  187:     2 pick &405 = IF ." Allow: GET, HEAD, POST" cr  THEN
  188:     lastrequest
  189:     ." <HTML><HEAD><TITLE>" 2 pick . 2dup type
  190:     ." </TITLE></HEAD>" cr
  191:     ." <BODY><H1>" type drop ." </H1>" cr ;
  192: : .trailer ( -- )
  193:     ." <HR><ADDRESS>Gforth httpd 0.1</ADDRESS>" cr
  194:     ." </BODY></HTML>" cr ;
  195: : .nok ( -- ) command? @ IF  &405 s" Method Not Allowed"
  196:     ELSE  &400 s" Bad Request"  THEN  html-error
  197:     ." <P>Your browser sent a request that this server "
  198:     ." could not understand.</P>" cr
  199:     ." <P>Invalid request in: <CODE>"
  200:     error-stack cell+ 2@ swap type
  201:     ." </CODE></P>" cr .trailer ;
  202: : .nofile ( -- ) &404 s" Not Found" html-error
  203:     ." <P>The requested URL <CODE>" url $@ type
  204:     ." </CODE> was not found on this server</P>" cr .trailer ;
  205: 
  206: \ http server                                          26mar00py
  207: 
  208: : http ( -- )  get-input  IF  .nok  ELSE
  209:     IF  url $@ 1 /string rework-htmldir
  210: 	dup 0< IF  drop .nofile
  211: 	ELSE  .ok  2dup >mime mime search-wordlist
  212: 	    0= IF  ['] txt  THEN  catch IF  maxnum off THEN
  213: 	THEN  THEN  THEN  outfile-id flush-file throw ;
  214: 
  215: : httpd  ( n -- )  maxnum !
  216:   BEGIN  ['] http catch  maxnum @ 0= or  UNTIL ;
  217: 
  218: script? [IF]  :noname &100 httpd bye ; is bootmessage  [THEN]
  219: 
  220: \ Use Forth as server-side script language             26mar00py
  221: 
  222: : $> ( -- )
  223:     BEGIN  source >in @ /string s" <$" search  0= WHILE
  224:         type cr refill  0= UNTIL  EXIT  THEN
  225:     nip source >in @ /string rot - dup 2 + >in +! type ;
  226: : <HTML> ( -- )  ." <HTML>" $> ;

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