X-Git-Url: https://git.jsancho.org/?a=blobdiff_plain;f=src%2Fserver.scm;fp=src%2Fserver.scm;h=1e540018c4ea30ca6ed3ad56c9b0993739224fed;hb=739e884086c71d990d35939d2006a5b04c39fefb;hp=0000000000000000000000000000000000000000;hpb=3c7d10914d0db2a4b9336ee210e84258e1580409;p=gacela.git

diff --git a/src/server.scm b/src/server.scm
new file mode 100644
index 0000000..1e54001
--- /dev/null
+++ b/src/server.scm
@@ -0,0 +1,102 @@
+;;; Gacela, a GNU Guile extension for fast games development
+;;; Copyright (C) 2009 by Javier Sancho Fernandez <jsf at jsancho dot org>
+;;;
+;;; This program is free software: you can redistribute it and/or modify
+;;; it under the terms of the GNU General Public License as published by
+;;; the Free Software Foundation, either version 3 of the License, or
+;;; (at your option) any later version.
+;;;
+;;; This program is distributed in the hope that it will be useful,
+;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;;; GNU General Public License for more details.
+;;;
+;;; You should have received a copy of the GNU General Public License
+;;; along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+
+(define-module (gacela server)
+  #:use-module (ice-9 optargs)
+  #:export (eval-from-client))
+
+
+(define start-server #f)
+(define check-connections #f)
+(define clean-closed-connections #f)
+(define eval-from-clients #f)
+(define stop-server #f)
+
+(let ((server-socket #f) (clients '())
+      (server-pipes #f))
+  (set! start-server
+	(lambda* (#:key (port #f) (pipes #f))
+	  (cond (port
+		 (set! server-socket (socket PF_INET SOCK_STREAM 0))
+		 (setsockopt server-socket SOL_SOCKET SO_REUSEADDR 1)
+		 (bind server-socket AF_INET INADDR_ANY port)
+		 (listen server-socket 5))
+		(pipes
+		 (set! server-pipes pipes)))
+	  (cond ((not (game-running?))
+		 (game-loop)))))
+
+
+  (set! clean-closed-connections
+	(lambda (conns)
+	  (cond ((null? conns) '())
+		(else
+		 (let* ((cli (car conns)) (sock (car cli)))
+		   (cond ((port-closed? sock)
+			  (clean-closed-connections (cdr conns)))
+			 (else
+			  (cons cli (clean-closed-connections (cdr conns))))))))))
+
+  (set! check-connections
+	(lambda ()
+	  (set! clients (clean-closed-connections clients))
+	  (catch #t
+		 (lambda ()
+		   (cond ((char-ready? server-socket)
+			  (set! clients (cons (accept server-socket) clients)))))
+		 (lambda (key . args) #f))))
+
+  (set! eval-from-clients
+	(lambda ()
+	  (cond (server-pipes
+		 (eval-from-client (car server-pipes) (cdr server-pipes))))
+	  (for-each
+	   (lambda (cli) (eval-from-client (car cli) (car cli)))
+	   clients)))
+
+  (set! stop-server
+	(lambda ()
+	  (cond (server-socket
+		 (close server-socket)
+		 (set! server-socket #f)))
+	  (for-each (lambda (cli) (close (car cli))) clients)
+	  (set! clients '()))))
+
+(define (eval-from-client rec-channel send-channel)
+  (cond ((char-ready? rec-channel)
+	 (catch #t
+		(lambda ()
+		  (display "leido")(newline)
+		  (let ((exp (read rec-channel)))
+		    (cond ((eof-object? exp)
+			   (close rec-channel))
+			  (else
+			   (let ((result (eval-string exp)))
+			     (write (if (eq? result *unspecified*) "" (format #f "~a" result)) send-channel))))))
+		(lambda (key . args)
+		  (let ((fmt (string-concatenate (list (cadr args) "~%")))
+			(params (caddr args)))
+		    (write
+		     (if params
+			 (apply format (cons #f (cons fmt params)))
+			 (format #f fmt))
+		     send-channel))))
+	 (force-output send-channel))))
+
+
+(define (connect-to-server client-socket hostname port)
+  (connect client-socket AF_INET (car (hostent:addr-list (gethost hostname))) port))