:initarg :stream
:accessor network-stream
:documentation "Stream used to talk to the empire server.")
- (logging-stream
- :initarg :logging-stream
- :accessor logging-stream
- :initform t
- :documentation "Messages coming back from the server are sent to
-this stream.")
(connection-handler
:accessor connection-handler
:initform nil
(session
:accessor session
:initarg :session
- :documentation "web session to which this connection belongs")))
+ :documentation "web session to which this connection belongs")
+ (send-queue
+ :accessor send-queue
+ :initform (locked-queue:create)
+ :documentation "lines outstanding to be sent at next prompt")))
(defun make-connection (&key (user nil)
(password nil)
(server-port *default-empire-server-port*)
(socket nil)
(network-stream nil)
- (logging-stream nil)
session)
(make-instance 'connection
:user user
:server-port server-port
:socket socket
:stream network-stream
- :logging-stream logging-stream
:session session))
;;; interface
(password nil)
(server-name *default-empire-server*)
(server-port *default-empire-server-port*)
- (logging-stream *standard-output*)
session)
"Connect to server and return a connection object."
(let* ((socket (usocket:socket-connect server-name server-port))
:password password
:socket socket
:network-stream stream
- :logging-stream logging-stream
:server-name server-name
:server-port server-port
:session session))
(handler (spawn-with-name (format nil "empire-handler-~a" user)
#'handle-connection connection)))
(setf (connection-handler connection) handler)
+ (empire-log:info "~a: connect" connection)
connection))
(defgeneric quit (connection))
(defgeneric handle-connection (connection))
(defgeneric read-message (connection))
-(defgeneric send-message (connection message))
+(defgeneric send-message (connection message &key next-mode))
+(defgeneric connected-p (connection))
(defgeneric reconnect (conncetion))
+(defmethod connected-p ((c connection))
+ (sb-thread:thread-alive-p (connection-handler c)))
+
(defmethod reconnect ((c connection))
(with-slots (server-name server-port user password socket stream connection-handler) c
(let* ((sock (usocket:socket-connect server-name server-port))
- (s (usocket:socket-stream sock))
- (handler (spawn-with-name (format nil "empire-handler-~a" user)
- #'handle-connection c)))
+ (s (usocket:socket-stream sock)))
(setf socket sock
stream s
- connection-handler handler))))
+ connection-handler (spawn-with-name (format nil "empire-handler-~a" user)
+ #'handle-connection c))))
+ (empire-log:info "~a: reconnect" c))
(defparameter +C_CMDOK+ "0")
(defparameter +C_DATA+ "1")
(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?")))
+ ((phase :initform :initial
+ :documentation "Initialization phase")))
(defclass play-mode (base-mode) nil)
(defun make-mode (connection mode)
(defmethod set-new-mode ((m base-mode) new-mode)
(let* ((c (connection m))
(mode (make-mode c new-mode)))
+ (empire-log:info "~a: set-new-mode ~a -> ~a" c (connection-mode c) new-mode)
(setf (connection-mode c) mode)))
+(defgeneric handle-cmdok (base-mode message))
(defgeneric handle-data (base-mode message))
(defgeneric handle-init (base-mode message))
(defgeneric handle-exit (base-mode message))
(defgeneric handle-prompt (base-mode message))
+(defgeneric handle-flush (base-mode message))
(defgeneric handle-simple-message (base-mode message))
+(defgeneric handle-ignore (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))))
+ (with-slots (phase connection) m
+ (ecase phase
+ (:initial (handle-cmdok m message))
+ (:play-sent (set-new-mode m 'play-mode)))))
+
+(defmethod handle-cmdok ((m init-mode) message)
+ (declare (ignorable message))
+ (with-slots (phase connection) m
+ (flet ((init-phase (mode send-args next-phase)
+ (with-slots (phase connection) mode
+ (send-message-one connection (apply #'format nil send-args))
+ (setf phase next-phase))))
+ (with-slots (user password) (connection m)
+ (ecase phase
+ (:initial (init-phase m `("client eow ~a" ,*version*) :client-sent))
+ (:client-sent (init-phase m `("coun ~a" ,user) :coun-sent))
+ (:coun-sent (init-phase m `("pass ~a" ,password) :pass-sent))
+ (:pass-sent (init-phase m '("play") :play-sent)))))))
(defmethod handle-exit ((m init-mode) message)
(declare (ignorable message))
- (quit (connection m)))
+ (with-slots (phase connection) m
+ (ecase phase
+ (:play-sent (send-message-one connection "kill")
+ (setf phase :kill-sent))
+ (:kill-sent (send-message-one connection "play")
+ (setf phase :play-sent)))))
+
+(defmethod handle-data ((m init-mode) message)
+ (declare (ignorable message))
+ t)
(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)
+ (let* ((c (connection m)))
(empire-web:data (session c) message)))
(defmethod handle-simple-message ((m play-mode) message)
- (let* ((c (connection m))
- (log (logging-stream c)))
- (format log "handle-simple-message ~a~%" message)
+ (let* ((c (connection m)))
(empire-web:data (session c) message)))
+(defmethod handle-flush ((m play-mode) message)
+ (let* ((c (connection m)))
+ (empire-web:prompt (session c) message)
+ (send-next-line c)))
+
+(defmethod send-next-line ((c connection))
+ (let ((next-event (locked-queue:dequeue (send-queue c))))
+ (etypecase next-event
+ (string (send-message-one c next-event))
+ (cons (let ((message (car next-event))
+ (mode (cdr next-event)))
+ (send-message-one c message)
+ (set-new-mode c mode))))))
+
+(defun read-no-eval (stream)
+ (let ((*read-eval* nil))
+ (read stream)))
+
(defmethod handle-prompt ((m play-mode) message)
- (let* ((c (connection m))
- (log (logging-stream c)))
+ (let* ((c (connection m)))
(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)))))
+ (let* ((minutes (read-no-eval s))
+ (btus (read-no-eval s)))
+ (empire-web:prompt (session c)
+ (format nil "[~a,~a]: " minutes btus))))
+ (send-next-line c)))
+
+(defmethod handle-ignore ((m init-mode) message)
+ (declare (ignorable message))
+ t)
(defparameter *line-type-dispatch*
(list `(,+C_DATA+ . handle-data)
`(,+C_INIT+ . handle-init)
`(,+C_EXIT+ . handle-exit)
- `(,+C_FLUSH+ . handle-simple-message)
+ `(,+C_FLUSH+ . handle-flush)
`(,+C_BADCMD+ . handle-simple-message)
`(,+C_FLASH+ . handle-simple-message)
+ `(,+C_CMDOK+ . handle-cmdok)
`(,+C_PROMPT+ . handle-prompt)))
(defun parse-server-line (line)
(defmethod read-message ((c connection))
(handler-case
(let* ((s (network-stream c))
- (log (logging-stream c))
(line (read-line s)))
- (format log "< ~a~%" line)
+ (empire-log:info "~a: < ~a" c line)
(multiple-value-bind (message type) (parse-server-line line)
(let ((handler (lookup-handler type))
(mode (connection-mode c)))
(error 'no-handler :mode mode :type type))))
line)
(sb-int:closed-stream-error () nil)
+ (sb-int:simple-stream-error () nil)
(end-of-file () nil)))
(defun raw-send-message (s message)
(write-sequence message s)
(terpri s)
(force-output s))
-
-(defmethod send-message ((c connection) message)
- (let ((s (network-stream c))
- (log (logging-stream c)))
- (format log "< ~a~%" message)
- (let ((sent-p nil)
- (tries 3))
- (loop
- while (and (not sent-p)
- (> tries 0))
- do (handler-case
- (progn
- (raw-send-message s message)
- (setf sent-p t))
- (sb-int:closed-stream-error ()
- (progn
- (decf tries)
- (reconnect c))))))
- message))
-
-(defgeneric play (connection))
-(defmethod play ((c connection))
- (with-slots (user password) c
- (send-message c (format nil "play FIXME ~a ~a" user password))))
-(defmethod quit ((c connection))
- (usocket:socket-close (socket c)))
+(defgeneric send-message-one (connection string))
+(defmethod send-message-one ((c connection) message)
+ (empire-log:info "~a: > ~a" c message)
+ (let ((s (network-stream c)))
+ (raw-send-message s message)))
+
+(defmethod send-message ((c connection) message &key next-mode)
+ (if (not (connected-p c))
+ (reconnect c))
+ (if next-mode
+ (locked-queue:enqueue (send-queue c) (cons message next-mode))
+ (locked-queue:enqueue (send-queue c) message)))
+
+(defparameter +special-command-char+ #\;)
+(defun special-command-p (line)
+ (and (> (length line) 0)
+ (char= +special-command-char+ (aref line 0))))
-;;; Tests
-(defvar *l1* "2 Empire server ready")
-;; (parse-server-line *l1*)
+(defmethod special-xup ((c connection))
+ t)
+
+(defmethod special-command ((c connection) line)
+ (cond ((string= line "xup") (special-xup c))
+ (t (empire-web:data (session c) "Unknown special command")))
+ line)
+
+(defmethod command ((c connection) line)
+ (cond ((special-command-p line) (special-command c (subseq line 1)))
+ (t (send-message c line))))
+
+(defmethod quit ((c connection))
+ (usocket:socket-close (socket c)))
projects / eow / blobdiff