base.lisp

   1 ;;;; -*- Mode: Lisp; Syntax: ANSI-Common-Lisp; Base: 10; Package: modlisp -*-
   2 ;;;; *************************************************************************
   3 ;;;; FILE IDENTIFICATION
   4 ;;;;
   5 ;;;; Name:          base.lisp
   6 ;;;; Purpose:       Utility functions for modlisp package
   7 ;;;; Programmer:    Kevin M. Rosenberg
   8 ;;;; Date Started:  Dec 2002
   9 ;;;;
  10 ;;;; $Id: base.lisp,v 1.8 2003/07/08 16:12:03 kevin Exp $
  11 ;;;; *************************************************************************
  12
  13 (in-package #:modlisp)
  14
  15 (defun modlisp-start (&key (port +default-apache-port+)
  16                            (processor 'demo-apache-command-processor)
  17                            (processor-args nil)
  18                            (catch-errors t))
  19   (let ((listener (make-instance 'listener :port port
  20                                  :base-name "modlisp"
  21                                  :function 'apache-command-issuer
  22                                  :function-args (cons processor processor-args)
  23                                  :format :text
  24                                  :wait nil
  25                                  :catch-errors catch-errors)))
  26     (init/listener listener :start)))
  27
  28
  29 (defun modlisp-stop (listener)
  30   (init/listener listener :stop))
  31
  32 (defun modlisp-stop-all ()
  33   (stop-all/listener))
  34
  35
  36 (let ((*number-server-requests* 0)
  37       (*number-worker-requests* 0)
  38       (*close-apache-socket* t))
  39
  40   (defun apache-command-issuer (*apache-socket* processor &rest args)
  41     "generates commands from apache, issues commands to processor-fun"
  42     (unwind-protect
  43          (progn
  44            (setq *number-worker-requests* 0)
  45            (do ((command (read-apache-command) (read-apache-command)))
  46                ((null command))
  47              (apply processor command args)
  48              (force-output *apache-socket*)
  49              (incf *number-worker-requests*)
  50              (incf *number-server-requests*)
  51              (when *close-apache-socket*
  52                (return))))
  53       (close-active-socket *apache-socket*)))
  54
  55
  56   (defun get-number-worker-requests ()
  57     *number-worker-requests*)
  58
  59   (defun get-number-server-requests ()
  60     *number-server-requests*)
  61
  62   (defun set-close-apache-socket (close?)
  63     (setq *close-apache-socket* close?))
  64
  65   ) ;; closure
  66
  67 (defun header-value (header key)
  68   (cdr (assoc key header :test #'string=)))
  69
  70 (defun read-apache-command ()
  71   (ignore-errors
  72     (let* ((header (read-apache-header))
  73            (content-length (header-value header "content-length"))
  74            (content (when content-length
  75                       (make-string
  76                        (parse-integer content-length :junk-allowed t)))))
  77      (when content
  78        (read-sequence content *apache-socket*)
  79        (push (cons "posted-content" content) header))
  80      header)))
  81
  82 (defun read-apache-line ()
  83   (kmrcl:string-left-trim-one-char  #\return
  84                                     (read-line *apache-socket* nil nil)))
  85
  86 (defun read-apache-header ()
  87   (loop for key = (read-apache-line)
  88       while (and key
  89                  (string-not-equal key "end")
  90                  (> (length key) 1))
  91       for value = (read-apache-line)
  92       collect (cons key value)))
  93
  94 (defun write-header-line (key value)
  95   (write-string key *apache-socket*)
  96   (write-char #\NewLine *apache-socket*)
  97   (write-string value *apache-socket*)
  98   (write-char #\NewLine *apache-socket*))
  99
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