;;;; Programmer: Kevin M. Rosenberg
;;;; Date Started: Dec 2002
;;;;
-;;;; $Id: base.lisp,v 1.2 2003/07/04 22:41:06 kevin Exp $
+;;;; $Id$
;;;; *************************************************************************
(in-package #:modlisp)
-
-(let ((*listener-socket* nil)
- (*listener-process* nil))
-
- (defun modlisp-start (&key (port +default-apache-port+)
- (function 'demo-apache-command-processor))
- (handler-case
- (make-socket-server (next-server-name) function port
- :format :text :wait nil)
- (error (e)
- (format t "Error ~A" e)
- (decf *listener-count*)
- nil)
- (:no-error (process socket)
- (setq *listener-socket* socket)
- (setq *listener-process* process)
- process)))
-
- (defun modlisp-stop ()
- (when *listener-process*
- (format t "~&; killing process ~d~%" *listener-process*)
- #+sbcl (sb-thread:destory-thread *listener-process*)
- #+allegro (mp:process-kill *listener-process*)
- #+allegro (mp:process-allow-schedule)
- #+lispworks (mp:process-kill *listener-process*)
- #+cmucl (mp:destroy process *listener-process*)
- (setq *listener-process* nil))
- (when *listener-socket*
- (ignore-errors (close *listener-socket*))
- (setq *listener-socket* nil)))
-
- )
-
-(defun next-server-name ()
- (format nil "modlisp-socket-server-~d" (incf *listener-count*)))
-
-(defun next-worker-name ()
- (format nil "modlisp-worker-~d" (incf *worker-count*)))
-
-
-(defun apache-command-issuer (*apache-socket* processor-fun)
- "generates commands from apache, issues commands to processor-fun"
- (let ((*close-apache-socket* t))
- (unwind-protect
- (loop for *apache-nb-use-socket* from 0
- for command = (get-apache-command)
- while command
- do (funcall processor-fun command)
- (force-output *apache-socket*)
- until *close-apache-socket*)
- (close *apache-socket*))))
-
-(defun get-apache-command ()
+(defun modlisp-start (&key (port +default-modlisp-port+)
+ (processor 'demo-modlisp-command-processor)
+ (processor-args nil)
+ (catch-errors t)
+ timeout
+ number-fixed-workers
+ remote-host-checker)
+ (let* ((server (make-instance 'ml-server
+ :processor processor
+ :processor-args processor-args
+ :port port))
+ (listener (make-instance 'listener :port port
+ :base-name "modlisp"
+ :function 'modlisp-command-issuer
+ :function-args (list server)
+ :format :text
+ :wait nil
+ :catch-errors catch-errors
+ :timeout timeout
+ :number-fixed-workers number-fixed-workers
+ :remote-host-checker remote-host-checker)))
+ (setf (listener server) listener)
+ (init/listener listener :start)
+ (setf *ml-server* server)
+ server))
+
+
+(defun modlisp-stop (server)
+ (init/listener (listener server) :stop)
+ (setf (listener server) nil)
+ server)
+
+(defun modlisp-stop-all ()
+ (stop-all/listener))
+
+;; Internal functions
+
+(defun modlisp-command-issuer (*modlisp-socket* server)
+ "generates commands from modlisp, issues commands to processor-fun"
+ (unwind-protect
+ (progn
+ (let ((*number-worker-requests* 0)
+ (*close-modlisp-socket* t)
+ (*ml-server* server))
+ (do ((command (read-modlisp-command) (read-modlisp-command)))
+ ((null command))
+ (apply (processor server) command (processor-args server))
+ (finish-output *modlisp-socket*)
+ (incf *number-worker-requests*)
+ (incf *number-server-requests*)
+ (when *close-modlisp-socket*
+ (return)))))
+ (close-active-socket *modlisp-socket*)))
+
+(defun header-value (header key)
+ "Returns the value of a modlisp header"
+ (cdr (assoc key header :test #'eq)))
+
+(defun read-modlisp-command ()
(ignore-errors
- (let* ((header (loop for key = (read-line *apache-socket* nil nil)
- while (and key
- (string-not-equal key "end")
- (> (length key) 1))
- for value = (read-line *apache-socket* nil nil)
- collect (cons key value)))
- (content-length (cdr (assoc "content-length" header :test #'equal)))
- (content (when content-length
- (make-string
- (parse-integer content-length :junk-allowed t)))))
- (when content
- (read-sequence content *apache-socket*)
- (push (cons "posted-content" content) header))
- header)))
+ (let* ((header (read-modlisp-header))
+ (content-length (header-value header :content-length))
+ (content (when content-length
+ (make-string
+ (parse-integer content-length :junk-allowed t)))))
+ (when content
+ (read-sequence content *modlisp-socket*)
+ (push (cons :posted-content content) header))
+ header)))
+
+
+(defun read-modlisp-line ()
+ (kmrcl:string-right-trim-one-char
+ #\return
+ (read-line *modlisp-socket* nil nil)))
+
+
+(defun read-modlisp-header ()
+ (loop for key = (read-modlisp-line)
+ while (and key (string-not-equal key "end"))
+ for value = (read-modlisp-line)
+ collect (cons (ensure-keyword key) value)))
(defun write-header-line (key value)
- (write-string key *apache-socket*)
- (write-char #\NewLine *apache-socket*)
- (write-string value *apache-socket*)
- (write-char #\NewLine *apache-socket*))
-
-(defun header-value (command key)
- (cdr (assoc key command :test #'string=)))
-
-
-;;; Default (demo) processor
-
-(defun demo-apache-command-processor (command)
- "Sample function to process an apache command"
- (if (equal (header-value command "url") "/asp/fixed")
- (fixed-request)
- (debug-request command)))
-
-(defun fixed-request ()
- (let ((html (fixed-html)))
- (write-header-line "Status" "200 OK")
- (write-header-line "Content-Type" "text/html")
- (write-header-line "Content-Length" (format nil "~d" (length html)))
- (write-header-line "Keep-Socket" "1")
- (write-string "end" *apache-socket*)
- (write-char #\NewLine *apache-socket*)
- (write-string html *apache-socket*)
- (setq *close-apache-socket* nil)) )
-
-(defun debug-request (command)
- (let ((html (debug-table command)))
- (write-header-line "Status" "200 OK")
- (write-header-line "Content-Type" "text/html")
- (write-header-line "Keep-Socket" "0")
- (write-string "end" *apache-socket*)
- (write-char #\NewLine *apache-socket*)
- (write-string html *apache-socket*)
- (setq *close-apache-socket* t)) )
-
-(defun debug-table (command)
- (with-output-to-string (s)
- (write-string "<!DOCTYPE HTML PUBLIC \"-//IETF//DTD HTML//EN\">
-<html><head></head>
-<body>
-<table><tbody>
-<tr><t colspan=\"2\">mod_lisp debug</th></tr>
-<tr><th>Key</th><th>Value</th></tr>" s)
- (format s "<TR bgcolor=\"#F0F0c0\"><TD>apache-nb-use-socket</TD><TD>~a</TD></TR>" *apache-nb-use-socket*)
- (loop for (key . value) in command do
- (format s "<tr><td>~a</td><td>~a</td></tr>" key value))
- (write-string "</tbody></table></body></html>" s)))
-
-(defun fixed-html ()
- "<!DOCTYPE HTML PUBLIC \"-//IETF//DTD HTML//EN\">
-<html><head></head><body><h1>mod_lisp</h1>
-<p>This is a constant html string sent by mod_lisp</p></body></html>")
+ (write-string (string key) *modlisp-socket*)
+ (write-char #\NewLine *modlisp-socket*)
+ (write-string value *modlisp-socket*)
+ (write-char #\NewLine *modlisp-socket*))
+
+
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