(connection-handler
:accessor connection-handler
:initform nil
- :documentation "Handler function for incoming messages")))
+ :documentation "Handler function for incoming messages")
+ (mode
+ :accessor connection-mode
+ :initform nil
+ :documentation "TODO(gefla)")
+ (session
+ :accessor session
+ :initarg :session
+ :documentation "web session to which this connection belongs")))
(defun make-connection (&key (user nil)
(password nil)
(server-port *default-empire-server-port*)
(socket nil)
(network-stream nil)
- (logging-stream nil))
+ (logging-stream nil)
+ session)
(make-instance 'connection
:user user
:password password
:server-port server-port
:socket socket
:stream network-stream
- :logging-stream logging-stream))
+ :logging-stream logging-stream
+ :session session))
;;; interface
(defun connect (&key (user nil)
(password nil)
(server-name *default-empire-server*)
(server-port *default-empire-server-port*)
- (logging-stream *standard-output*))
+ (logging-stream *standard-output*)
+ session)
"Connect to server and return a connection object."
(let* ((socket (usocket:socket-connect server-name server-port))
(stream (usocket:socket-stream socket))
:network-stream stream
:logging-stream logging-stream
:server-name server-name
- :server-port server-port))
+ :server-port server-port
+ :session session))
(handler (spawn-with-name (format nil "empire-handler-~a" user)
#'handle-connection connection)))
(setf (connection-handler connection) handler)
(defparameter +C_EXIT+ "3")
(defparameter +C_FLUSH+ "4")
(defparameter +C_NOECHO+ "5")
-(defparameter +C_PROMPT+ "6")
+(defparameter +C_PROMPT+ "6")
(defparameter +C_ABORT+ "7")
(defparameter +C_REDIR+ "8")
(defparameter +C_PIPE+ "9")
(defparameter +C_FLASH+ "d")
(defparameter +C_INFORM+ "e")
-(defgeneric init-mode (connection message))
-(defmethod init-mode ((c connection) message)
+(defclass base-mode ()
+ ((connection :initarg :connection :accessor connection)))
+(defclass init-mode (base-mode)
+ ((play-sent-p :initform nil
+ :documentation "Have we already sent the play command?")))
+(defclass play-mode (base-mode) nil)
+
+(defun make-mode (connection mode)
+ (make-instance mode :connection connection))
+
+(defgeneric set-new-mode (base-mode new-mode))
+(defmethod set-new-mode ((m base-mode) new-mode)
+ (let* ((c (connection m))
+ (mode (make-mode c new-mode)))
+ (setf (connection-mode c) mode)))
+
+(defgeneric handle-data (base-mode message))
+(defgeneric handle-init (base-mode message))
+(defgeneric handle-exit (base-mode message))
+(defgeneric handle-prompt (base-mode message))
+
+(defmethod handle-init ((m init-mode) message)
+ (declare (ignorable message))
+ (with-slots (play-sent-p) m
+ (if (not play-sent-p)
+ (progn
+ (play (connection m))
+ (setf play-sent-p t))
+ (set-new-mode m 'play-mode))))
+
+(defmethod handle-exit ((m init-mode) message)
(declare (ignorable message))
- (play c))
+ (quit (connection m)))
-(defvar *line-type-dispatch*
- (list `(,+C_INIT+ . init-mode)))
+(defmethod handle-exit ((m play-mode) message)
+ (declare (ignorable message))
+ (quit (connection m)))
+
+(defmethod handle-data ((m play-mode) message)
+ (let* ((c (connection m))
+ (log (logging-stream c)))
+ (format log "handle-data ~a~%" message)
+ (empire-web:data (session c) message)))
+
+(defmethod handle-prompt ((m play-mode) message)
+ (let* ((c (connection m))
+ (log (logging-stream c)))
+ (with-input-from-string (s message)
+ (let* ((minutes (read s)) ;;FIXME DANGEROUS
+ (btus (read s)))
+ (format log "[~a:~a]: ~%" minutes btus)
+ (empire-web:prompt (session c) minutes btus)))))
+
+(defparameter *line-type-dispatch*
+ (list `(,+C_DATA+ . handle-data)
+ `(,+C_INIT+ . handle-init)
+ `(,+C_EXIT+ . handle-exit)
+ `(,+C_PROMPT+ . handle-prompt)))
(defun parse-server-line (line)
(let* ((first-space-index
(values message message-type)))
(defmethod handle-connection ((c connection))
+ (setf (connection-mode c) (make-mode c 'init-mode))
(loop while (read-message c)))
(defun lookup-handler (message-type)
(cdr (assoc message-type *line-type-dispatch* :test 'string=)))
+(define-condition no-handler (error)
+ ((mode :initarg :mode)
+ (type :initarg :type))
+ (:report (lambda (condition stream)
+ (with-slots (mode type) condition
+ (format stream "No handler for ~a in mode ~a."
+ type mode)))))
(defmethod read-message ((c connection))
- (let* ((s (network-stream c))
- (log (logging-stream c))
- (line (read-line s)))
- (format log "< ~a~%" line)
- (multiple-value-bind (message type) (parse-server-line line)
- (let ((handler (lookup-handler type)))
- (funcall handler c message)))
- line))
+ (handler-case
+ (let* ((s (network-stream c))
+ (log (logging-stream c))
+ (line (read-line s)))
+ (format log "< ~a~%" line)
+ (multiple-value-bind (message type) (parse-server-line line)
+ (let ((handler (lookup-handler type))
+ (mode (connection-mode c)))
+ (if handler
+ (funcall handler mode message)
+ (error 'no-handler :mode mode :type type))))
+ line)
+ (sb-int:closed-stream-error () nil)))
(defmethod send-message ((c connection) message)
(let ((s (network-stream c))