106 lines
4.0 KiB
Scheme
106 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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;; NOTE : files stored on this server are retrieved from its runtime directory
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(load "CSAN-server-daemon-record.scm")
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(define (errormsg) (display " message not understood. "))
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(define (eoln) (string #\newline))
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(define (servermsg) (display "::message::"))
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(define (get-package package-name)
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(let* ((in (open-input-file (if (string<=? ".tar.gz" package-name)
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package-name
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(string-append package-name ".tar.gz"))))
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(contents ""))
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(do ((c (read-char in) (read-char in)))
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((eof-object? c)contents)
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(set! contents (string-append contents (string c))))))
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(define (run-daemon-child-CSAN rec)
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(let ((*hostname (hostname rec))
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(*port (port rec))
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(*socket (socket rec))
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(*motd (motd rec))
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(*ack (ack rec))
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(*apop (apop rec))
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(*stat (stat rec))
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(*list (list rec))
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(*bye (bye rec)))
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(set! *socket (open-socket *port))
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(for-each display '("Opening CSAN server side : listening on host : "
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*hostname
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" port : "
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*port
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(eoln)))
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((lambda ()
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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 *motd out)
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(let ((answer (read (make-string-input-port in))))
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(for-each display '((servermsg) (symbol->string answer)))
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(if (symbol? answer)
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(cond ((eq? 'get answer)
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(let ((answer2 (read (make-string-input-port in))))
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(write (get-package answer2) out)))
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((or (eq? 'QUIT answer)(eq? 'quit answer))
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(write *bye 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 (errormsg) out))
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))
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))))
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(let ((answer2 (read (make-string-input-port in))))
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(for-each display '((servermsg) (symbol->string answer2)))
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(write *bye 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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(define rc (make-daemon-record
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"localhost" ;; virtual host
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6969
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#f
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"CSAN server side ready."
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"Scheming..."
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"CSAN server signing off."
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))
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(run-daemon-child-CSAN rc)
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