X-Git-Url: http://git.pond.sub.org/?p=eow;a=blobdiff_plain;f=empire.lisp;h=5b58812bd257662c8afed7eb4199c597771e1070;hp=fa088df853f29dc7613639fa036a139ce82ddcab;hb=ccd3edf79e55da2df4a3e7fbf31add1bd250f354;hpb=f457ab38fddc9a587b37b3d97b8bcc19d5c412cb

diff --git a/empire.lisp b/empire.lisp
index fa088df..5b58812 100644
--- a/empire.lisp
+++ b/empire.lisp
@@ -33,16 +33,18 @@
     :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 is sent to
-this stream.")
    (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)
@@ -50,7 +52,7 @@ this stream.")
 			(server-port *default-empire-server-port*)
 			(socket nil)
 			(network-stream nil)
-			(logging-stream nil))
+			session)
   (make-instance 'connection
 		 :user user
 		 :password password
@@ -58,14 +60,14 @@ this stream.")
 		 :server-port server-port
 		 :socket socket
 		 :stream network-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*))
+		 session)
   "Connect to server and return a connection object."
   (let* ((socket (usocket:socket-connect server-name server-port))
          (stream (usocket:socket-stream socket))
@@ -73,19 +75,31 @@ this stream.")
 				      :password password
 				      :socket 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)
+    (empire-log:info "empire:connect: ~a" connection)
     connection))
 
-
 (defgeneric quit (connection))
 (defgeneric handle-connection (connection))
 (defgeneric read-message (connection))
 (defgeneric send-message (connection message))
+(defgeneric reconnect (conncetion))
+
+(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)))
+	(setf socket sock
+	      stream s
+	      connection-handler handler)))
+  (empire-log:info "~a: reconnect" c))
 
 (defparameter +C_CMDOK+ "0")
 (defparameter +C_DATA+ "1")
@@ -93,7 +107,7 @@ this stream.")
 (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")
@@ -103,13 +117,75 @@ this stream.")
 (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)))
+    (empire-log:info "~a: set-new-mode ~a -> ~a" c (connection-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))
+(defgeneric handle-flush (base-mode message))
+(defgeneric handle-simple-message (base-mode message))
+
+(defmethod handle-init ((m init-mode) message)
   (declare (ignorable message))
-  (play c))
+  (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))
+  (quit (connection m)))
+
+(defmethod handle-exit ((m play-mode) message)
+  (declare (ignorable message))
+  (quit (connection m)))
+
+(defmethod handle-data ((m play-mode) message)
+  (let* ((c (connection m)))
+    (empire-web:data (session c) message)))
+
+(defmethod handle-simple-message ((m play-mode) message)
+  (let* ((c (connection m)))
+    (empire-web:data (session c) message)))
 
-(defvar *line-type-dispatch*
-  (list `(,+C_INIT+ . init-mode)))
+(defmethod handle-flush ((m play-mode) message)
+  (let* ((c (connection m)))
+    (empire-web:prompt (session c) message)))
+
+(defmethod handle-prompt ((m play-mode) message)
+  (let* ((c (connection m)))
+    (with-input-from-string (s message)
+      (let* ((minutes (read s)) ;;FIXME DANGEROUS
+	     (btus (read s)))
+	(empire-web:prompt (session c)
+			   (format nil "[~a,~a]: " minutes btus))))))
+
+(defparameter *line-type-dispatch*
+  (list `(,+C_DATA+ . handle-data)
+	`(,+C_INIT+ . handle-init)
+	`(,+C_EXIT+ . handle-exit)
+	`(,+C_FLUSH+ . handle-flush)
+	`(,+C_BADCMD+ . handle-simple-message)
+	`(,+C_FLASH+ . handle-simple-message)
+	`(,+C_PROMPT+ . handle-prompt)))
 
 (defun parse-server-line (line)
   (let* ((first-space-index
@@ -117,34 +193,80 @@ this stream.")
 	     if (eq (char line i) #\Space)
 	     do (return i)))
 	 (message-type (subseq line 0 first-space-index))
-	 (message (subseq line (+ first-space-index 1))))
+	 (message (if first-space-index
+		      (subseq line (+ first-space-index 1))
+		      "")))
     (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))
-  
-(defmethod send-message ((c connection) message)
-  (let ((s (network-stream c))
-	(log (logging-stream c)))
-    (format log "< ~a~%" message)
+  (handler-case
+      (let* ((s (network-stream c))
+	     (line (read-line s)))
+	(empire-log:info "< ~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)
+    (end-of-file () nil)))
+
+(defun raw-send-message (s message)
     (write-sequence message s)
     (terpri s)
-    (force-output s)
+    (force-output s))
+  
+(defmethod send-message ((c connection) message)
+  (let ((s (network-stream c)))
+    (empire-log:info "> ~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)
+		  (empire-log:info "Connection close - retrying (~a tries left)" tries)
+		  (reconnect c))))))
     message))
 
+(defparameter +special-command-char+ #\;)
+
+(defun special-command-p (line)
+  (char= +special-command-char+ (aref line 0)))
+
+(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"))))
+
+(defmethod command ((c connection) line)
+  (cond ((special-command-p line) (special-command c (subseq line 1)))
+	(t (send-message c line))))
+
 (defgeneric play (connection))
 (defmethod play ((c connection))
   (with-slots (user password) c