118 lines
4.0 KiB
Scheme
118 lines
4.0 KiB
Scheme
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;;; tforks.scm - a scheme daemon child process
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;;;
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;;; Copyright (c) 2011-2012 Johan Ceuppens
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;;;
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;;; All rights reserved.
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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
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;;; are met:
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;;; 1. Redistributions of source code must retain the above copyright
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;;; notice, this list of conditions and the following disclaimer.
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;;; 2. Redistributions in binary form must reproduce the above copyright
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;;; notice, this list of conditions and the following disclaimer in the
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;;; documentation and/or other materials provided with the distribution.
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;;; 3. The name of the authors may not be used to endorse or promote products
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;;; derived from this software without specific prior written permission.
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;;;
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;;; THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
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;;; IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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;;; OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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;;; IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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;;; INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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;;; NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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;;; DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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;;; THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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;;; (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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;;; THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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(load "trecords.scm")
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(load "tserver.scm")
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(load "tmailbox-load.scm")
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;; You can spawn this
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(define (run-daemon-child rec)
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(display "Opening listening socket on host : ")
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(display (force (hostname rec)))
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(display " port unknown at this stage, default 1110 ")
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(display " ...")
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(newline)
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(fork-and-forget
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(let ((socket (force (sock rec))))
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(begin
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(
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(lambda (request portnumber)
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(call-with-values
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(lambda ()
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(socket-accept socket))
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(lambda (in out)
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(write request out)
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(do ((i 0 (+ i 1)))
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((> i 9)(display "Quitting mail daemon child.")(newline))
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;; (iterate loop
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;; ((count* i 0))
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;; ()
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;; (if (>= i 10)
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;; (display "Quitting mail daemon child.")(newline)
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(call-with-values ;; FIXME (let ((answer2 (read in)))
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(lambda ()
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(list (read in)(read in)))
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(lambda (answer)
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(let ((answer2 (car answer))
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(answer3 (if (not (null? (cdr answer)))
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(cadr answer)
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'foo)))
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(display "Asked something : ")(display (symbol->string answer2))(display " ")(display answer3)(newline)
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(if (symbol? answer2)
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(cond ((eq? 'APOP answer2)
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(write mailbox-contents out)
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;; FIXME write "" to user's mailbox file
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;;(let ((out2 (open-output-file (string-append spooldirectory (getenv "USER")))))
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;; (write out2 ""))
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)
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((eq? 'STAT answer2)
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#t)
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((eq? 'LIST answer2)
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#t)
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((eq? 'RETR answer2)
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(let ((idx (string->number (symbol->string answer3))))
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(if idx
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(write (tmail-get-mail-with-index (getenv "USER") idx) out))))
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;; for brokeness
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((eq? 'USER answer2)
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;;FIXME overflow
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(let ((username (if (number? answer3)
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(number->string answer3)
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(symbol->string answer3))))
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(setenv "USER" username)
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(write "+OK user accepted - not implemented" out)))
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((eq? 'PASS answer2)
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(let ((pass (if (number? answer3)
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(number->string answer3)
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(symbol->string answer3))))
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(write "+OK password accepted - not implemented" out)))
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((eq? 'QUIT answer2)
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(write (force (BYE rec)) out)
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(close-input-port in)
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(close-socket socket)
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(close-output-port out)
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(exit))
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(else
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(write (force (ERROR500 rec)) out))
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))
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))))
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(write (force (SPAWNEND rec)) out)
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(write (force (BYE rec)) out)
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(close-input-port in)
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(close-socket socket)
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(close-output-port out)
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(exit)
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)))
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(force (MOTD rec)) (port rec))
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))))
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