;;; -*- Mode:Lisp; Readtable:ZL; Package:USER; Base:10; Patch-File:T -*-
;;; Patch file for System version 124.49
;;; Reason:
;;;  Opening a file via FTP-ACCESS with :characters NIL and :byte-size
;;;  unspecified set byte-size to 8 instead of 16.
;;; Written 10-Jun-88 18:21:43 by pld (Peter L. DeWolf) at site Gigamos Cambridge
;;; while running on Cthulhu from band 1
;;; with Experimental System 124.44, Experimental Local-File 74.1, Experimental File-Server 23.1, Experimental Unix-Interface 12.0, Experimental ZMail 72.0, Experimental Tape 23.6, Experimental Lambda-Diag 16.1, microcode 1756, SDU Boot Tape 3.14, SDU ROM 8, the old ones.



; From modified file DJ: L.NETWORK.IP-TCP.USER; FTP-ACCESS.LISP#56 at 10-Jun-88 18:21:43
#10R FILE-SYSTEM#: 
(COMPILER-LET ((*PACKAGE* (PKG-FIND-PACKAGE "FILE-SYSTEM")))
  (COMPILER::PATCH-SOURCE-FILE "SYS: NETWORK; IP-TCP; USER; FTP-ACCESS  "

(defmethod (ftp-access :open) (file pathname
			       &key &optional
			       (direction :input)
			       (characters t)
			       (byte-size :default)
			       (error t)
			       if-exists ; if-does-not-exist
			       raw-directory-list
			       probe-directory-list
			       &allow-other-keys &aux probe-stream)
  (cond ((memq direction '(nil :probe))
	 (make-instance 'ftp-probe-stream
			:truename nil
			:pathname pathname
			:host host
			:raw-data
			(and (ftp-directory-line-parserp host t)
			     (with-output-to-string (s)
			       (with-open-file (d file :raw-directory-list t
						  :probe-directory-list t
						  :error error)
				 (when (streamp d)
				   (stream-copy-until-eof d s)))))))
	('else
	 (when (and (memq direction *ftp-probe-before-open-directions*)
		    (not raw-directory-list)
		    (or (eq *ftp-probe-before-open-p* t)
			(memq (send host :system-type)
			      *ftp-probe-before-open-p*)
			(get host :ftp-probe-before-open-p)))
	   (setq probe-stream (open file :direction nil :error error))
	   (when (and (eq direction :output)
		      (memq (send file :version) '(nil :newest)))
	     (cond ((not (send probe-stream :truename))
		    (send probe-stream :set-truename
			  (send file :new-version 1)))
		   ((numberp (send (send probe-stream :truename) :version))
		    ;; kludge-a-rama. The *FTP-PROBE-BEFORE-OPEN-P* is useful
		    ;; if the host cant take so many simultaneous servers
		    ;; as would be created if we probe *after* the opening of
		    ;; the file data connection. The most sensible solution to
		    ;; all of this is to use another file protocol.
		    (send probe-stream :set-truename
			  (send (send probe-stream :truename)
				:new-version (1+ (send (send probe-stream :truename)
						       :version))))))
	     (when (not (plist probe-stream))
	       (setf (plist probe-stream)
		     `(:creation-date ,(time:get-universal-time))))))
	 (handling-file-errors (error)
	   (allocating-host-unit (unit)
	     (let ((command nil)
		   (buffers nil)
		   (optimistic nil)
		   (tcp:*tcp-stream-whostate* (cond (probe-directory-list "Probe")
						    (raw-directory-list "Directory")
						    (t "Open"))))
	       (when probe-directory-list
		 (setq buffers 1)
		 (setq optimistic t))
	       (cond (raw-directory-list
		      (setq command "LIST ~A"))
		     ((eq direction :output)
		      (setq command (caseq if-exists
				      (:append "APPE ~A")
				      (t "STOR ~A"))))
		     ((eq direction :input)
		      (setq command "RETR ~A")))
	       (when (eq byte-size :default)
		 (cond ((eq characters t)
			(setq byte-size 8))
		       ((eq characters nil)
			(setq byte-size 16.))
		       ((eq characters :default)
			;; almost no way of getting this information
			;; unix uses magic numbers, on VMS maybe character if
			;; record format variable length CR.
			;; for now kludge it so that at least load works on
			;; qfasl files.
			(multiple-value-setq (characters byte-size)
			  (kludge-ftp-characterp file pathname)))))
	       (cond ((not characters)
		      (send unit :setbinary byte-size))
		     ((eq (send host :system-type) :lispm)
		      (send unit :setbinary 8))
		     ('else
		      ;; in fact if the host is a unix host then
		      ;; binary mode with our own easier-to-do translation
		      ;; would be better than forcing kludgy ascii
		      ;; translation to happen on both hosts.
		      (send unit :setascii)))
	       (ftp-access-operation file unit :initconn direction buffers optimistic)
	       (multiple-value-bind (c code)
		   (send unit :command
			 command (fixup-ftp-string-for-host
				   (send file :string-for-host)
				   file))
		 (cond ((= c (tcp-application:sym ftp:PRELIM))
			(ftp-access-operation file unit :dataconn
					      file pathname direction byte-size
					      raw-directory-list probe-stream))
		       ((and (= code 530.)
			     (progn (send unit :login unit t host)
				    ;; some hosts forget about the PORT
				    ;; command after a USER command is
				    ;; given, so give it again.
				    (ftp-access-operation file unit :initconn direction buffers optimistic)
				    (= (tcp-application:sym ftp:PRELIM)
				       (send unit :command command
						    (send file :string-for-host)))))
			(ftp-access-operation file unit :dataconn
					      file pathname direction byte-size
					      raw-directory-list probe-stream))
		       ('else
			(send unit :close-dataconn nil)
			(send unit :ftp-error "Access error" file))))))))))

))