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- ;; -*-Emacs-Lisp-*-
- ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
- ;;
- ;; File: efs-vm.el
- ;; Release: $efs release: 1.15 $
- ;; Version: #Revision: 1.1 $
- ;; RCS:
- ;; Description: Allows the VM mail reader to access folders using efs.
- ;; If you are looking for support for VM/CMS, see efs-cms.el.
- ;; Author: Sandy Rutherford <sandy@ibm550.sissa.it>
- ;; Created: Mon Nov 9 23:49:18 1992 by sandy on riemann
- ;; Modified: Sun Nov 27 18:44:07 1994 by sandy on gandalf
- ;;
- ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
-
- ;; If vm-get-new-mail (usually bound to "g") is given a prefix, it
- ;; will prompt for a folder from which to collect mail. With
- ;; efs-vm, this folder can be in efs syntax. As is usual
- ;; with VM, this folder will not be deleted. If at the folder prompt,
- ;; you give "/user@host:", efs-vm will collect mail from the
- ;; spool file on the remote machine. The spool file will be deleted if
- ;; the mail is successfully collected. It is not necessary for
- ;; movemail, nor even emacs, to be installed on the remote machine.
- ;; The functionality of movemail is mimicked with FTP commands. Both
- ;; local and remote crashboxes are used, so that mail will not be lost
- ;; if the FTP connection is lost.
- ;;
- ;; To use efs-vm, put (require 'efs-vm) in your .vm file.
- ;;
- ;; Works for vm 5.56 through 5.72. May not work with older versions.
- ;; If vm grows some file-name-handler-alist support, we should use it.
- ;; Actually it has. I just haven't gotten around to this yet.
-
- ;;; Known Bugs:
- ;;
- ;; 1. efs-vm will not be able to collect mail from a spool file if
- ;; you do not have write permission in the spool directory.
- ;; I think that this precludes HP-UX.
- ;; I hope to do something about this.
- ;;
- ;; 2. efs-vm is as clever as at can be about spool file locking.
- ;; i.e. not very clever at all. At least it uses a rename command
- ;; to minimize the window for problems. Use POP if you want to
- ;; be careful.
- ;;
-
- ;;; Provisions, requirements, and autoloads
-
- (provide 'efs-vm)
- (require 'efs-cu)
- (require 'efs-ovwrt)
- (require 'vm)
- ;(require 'vm-folder) ; not provided
- (if (or (not (fboundp 'vm-get-new-mail))
- (eq (car-safe (symbol-function 'vm-get-new-mail)) 'autoload))
- (load-library "vm-folder"))
- (autoload 'efs-make-tmp-name "efs")
- (autoload 'efs-del-tmp-name "efs")
- (autoload 'efs-send-cmd "efs")
- (autoload 'efs-re-read-dir "efs")
- (autoload 'efs-copy-file-internal "efs")
-
- ;;; User variables
-
- (defvar efs-vm-spool-files nil
- "Association list of \( USER@MACHINE . SPOOLFILES \) pairs that
- specify the location of the default remote spool file for MACHINE. SPOOLFILES
- is a list of remote spool files.")
-
- (defvar efs-vm-crash-box "~/EFS.INBOX.CRASH"
- "Local file where efs keeps its local crash boxes.")
-
- ;;; Internal variables
-
- (defconst efs-vm-version
- (concat (substring "$efs release: 1.15 $" 14 -2)
- "/"
- (substring "#Revision: 1.1 $" 11 -2)))
-
-
- (defun efs-vm-get-new-mail (&optional arg)
- "Documented as original"
- (interactive "P")
- (vm-select-folder-buffer)
- (vm-check-for-killed-summary)
- (vm-error-if-virtual-folder)
- (vm-error-if-folder-read-only)
- (cond
- ((null arg)
- (if (not (eq major-mode 'vm-mode))
- (vm-mode))
- (if (consp (car (vm-spool-files)))
- (message "Checking for new mail for %s..." buffer-file-name)
- (message "Checking for new mail..."))
- (let (new-messages totals-blurb)
- (if (and (vm-get-spooled-mail)
- (setq new-messages (vm-assimilate-new-messages t)))
- (progn
- (if vm-arrived-message-hook
- (while new-messages
- (vm-run-message-hook (car new-messages)
- 'vm-arrived-message-hook)
- (setq new-messages (cdr new-messages))))
- ;; say this NOW, before the non-previewers read
- ;; a message, alter the new message count and
- ;; confuse themselves.
- (setq totals-blurb (vm-emit-totals-blurb))
- (vm-display nil nil '(vm-get-new-mail) '(vm-get-new-mail))
- (if (vm-thoughtfully-select-message)
- (vm-preview-current-message)
- (vm-update-summary-and-mode-line))
- (message totals-blurb))
- (if (consp (car (vm-spool-files)))
- (message "No new mail for %s" buffer-file-name)
- (message "No new mail."))
- (sit-for 4)
- (message ""))))
- (t
- (let* ((buffer-read-only nil)
- (folder (read-file-name "Gather mail from folder: "
- vm-folder-directory t))
- (parsed (efs-ftp-path folder))
- mcount new-messages totals-blurb)
- (if parsed
- (if (string-equal (nth 2 parsed) "")
- ;; a spool file
- (if (not (and (efs-vm-get-remote-spooled-mail folder)
- (setq new-messages
- (vm-assimilate-new-messages t))))
- (progn
- (message
- "No new mail, or mail couldn't be retrieved by ftp.")
- ;; don't let this message stay up forever...
- (sit-for 4)
- (message ""))
- (if vm-arrived-message-hook
- (while new-messages
- (vm-run-message-hook (car new-messages)
- 'vm-arrived-message-hook)
- (setq new-messages (cdr new-messages))))
- ;; say this NOW, before the non-previewers read
- ;; a message, alter the new message count and
- ;; confuse themselves.
- (setq totals-blurb (vm-emit-totals-blurb))
- (vm-display nil nil '(vm-get-new-mail) '(vm-get-new-mail))
- (if (vm-thoughtfully-select-message)
- (vm-preview-current-message)
- (vm-update-summary-and-mode-line))
- (message totals-blurb))
-
- ;; a remote folder
- (let ((tmp-file (car (efs-make-tmp-name nil (car parsed))))
- (folder (expand-file-name folder)))
- (unwind-protect
- (progn
- (efs-copy-file-internal
- folder parsed tmp-file nil t nil
- (format "Getting %s" folder)
- ;; asynch worries me here
- nil nil)
- (if (and vm-check-folder-types
- (not (vm-compatible-folder-p tmp-file)))
- (error
- "Folder %s is not the same format as this folder."
- folder))
- (save-excursion
- (vm-save-restriction
- (widen)
- (goto-char (point-max))
- (insert-file-contents tmp-file)))
- (setq mcount (length vm-message-list))
- (if (setq new-messages (vm-assimilate-new-messages))
- (progn
- (if vm-arrived-message-hook
- (while new-messages
- (vm-run-message-hook (car new-messages)
- 'vm-arrived-message-hook)
- (setq new-messages (cdr new-messages))))
- ;; say this NOW, before the non-previewers read
- ;; a message, alter the new message count and
- ;; confuse themselves.
- (setq totals-blurb (vm-emit-totals-blurb))
- (vm-display nil nil '(vm-get-new-mail)
- '(vm-get-new-mail))
- (if (vm-thoughtfully-select-message)
- (vm-preview-current-message)
- (vm-update-summary-and-mode-line))
- (message totals-blurb)
- ;; The gathered messages are actually still on disk
- ;; unless the user deletes the folder himself.
- ;; However, users may not understand what happened if
- ;; the messages go away after a "quit, no save".
- (setq vm-messages-not-on-disk
- (+ vm-messages-not-on-disk
- (- (length vm-message-list)
- mcount))))
- (message "No messages gathered."))
- (efs-del-tmp-name tmp-file)))))
-
- ;; local
-
- (if (and vm-check-folder-types
- (not (vm-compatible-folder-p folder)))
- (error "Folder %s is not the same format as this folder."
- folder))
- (save-excursion
- (vm-save-restriction
- (widen)
- (goto-char (point-max))
- (insert-file-contents folder)))
- (setq mcount (length vm-message-list))
- (if (setq new-messages (vm-assimilate-new-messages))
- (progn
- (if vm-arrived-message-hook
- (while new-messages
- (vm-run-message-hook (car new-messages)
- 'vm-arrived-message-hook)
- (setq new-messages (cdr new-messages))))
- ;; say this NOW, before the non-previewers read
- ;; a message, alter the new message count and
- ;; confuse themselves.
- (setq totals-blurb (vm-emit-totals-blurb))
- (vm-display nil nil '(vm-get-new-mail) '(vm-get-new-mail))
- (if (vm-thoughtfully-select-message)
- (vm-preview-current-message)
- (vm-update-summary-and-mode-line))
- (message totals-blurb)
- ;; The gathered messages are actually still on disk
- ;; unless the user deletes the folder himself.
- ;; However, users may not understand what happened if
- ;; the messages go away after a "quit, no save".
- (setq vm-messages-not-on-disk
- (+ vm-messages-not-on-disk
- (- (length vm-message-list)
- mcount))))
- (message "No messages gathered.")))))))
-
- (defun efs-vm-gobble-remote-crash-box (remote-crash-box)
- (let ((remote-crash-box (expand-file-name remote-crash-box))
- (crash-box (expand-file-name efs-vm-crash-box))
- lsize)
- (if (file-exists-p vm-crash-box)
- (progn
- ;; This should never happen, but let's make sure that we never
- ;; clobber mail.
- (message "Recovering messages from local crash box...")
- (vm-gobble-crash-box efs-vm-crash-box)
- (message "Recovering messages from local crash box... done")))
- (efs-copy-file-internal remote-crash-box (efs-ftp-path remote-crash-box)
- crash-box nil nil nil
- (format "Getting %s" remote-crash-box)
- ;; asynch worries me here
- nil nil)
- ;; only delete the remote crash box if we are sure that we have everything
- (if (and (setq lsize (nth 7 (file-attributes crash-box)))
- (eq lsize (nth 7 (file-attributes remote-crash-box)))
- (vm-compatible-folder-p crash-box))
- (progn
- (vm-gobble-crash-box crash-box)
- (delete-file remote-crash-box))
- ;; don't leave garbage in the local crash box
- (condition-case () (delete-file crash-box) (error nil))
- (error "Problem reading remote crash box %s" remote-crash-box))))
-
- (defun efs-vm-get-remote-spooled-mail (remote-path)
- ;; remote-path is usually of the form /user@machine:
- ;; Usually vm sets inhibit-quit to t for this. This is probably
- ;; a bad idea if there is ftp activity.
- ;; I don't want to assume that the remote machine has movemail.
- ;; Try to mimic movemail with ftp commands as best as possible.
- ;; For this to work, we need to be able to create a subdirectory
- ;; in the spool directory.
- (if vm-block-new-mail
- (error "Can't get new mail until you save this folder."))
- (let* ((parsed (efs-ftp-path remote-path))
- (host (car parsed))
- (user (nth 1 parsed))
- (spool-files
- (or (cdr (assoc (concat user "@" host)
- efs-vm-spool-files))
- (list (concat "/usr/spool/mail/" user))))
- got-mail)
- (while spool-files
- (let* ((s-file (car spool-files))
- (spool-file (format efs-path-format-string user host s-file))
- ;; rmdir and mkdir bomb if this path ends in a /.
- (c-dir (concat s-file ".CRASHBOX"))
- (rc-file (concat c-dir "/CRASHBOX"))
- (crash-dir (concat spool-file ".CRASHBOX/"))
- (remote-crash-file (concat crash-dir "CRASHBOX"))
- (crash-box (expand-file-name efs-vm-crash-box)))
- (if (file-exists-p crash-box)
- (progn
- (message "Recovering messages from crash box...")
- (vm-gobble-crash-box crash-box)
- (message "Recovering messages from crash box... done")
- (setq got-mail t)))
- (if (let ((efs-allow-child-lookup nil))
- (file-exists-p remote-crash-file))
- (progn
- (message "Recovering messages from remote crash box...")
- (efs-vm-gobble-remote-crash-box remote-crash-file)
- (message "Recovering messages from remote crash box... done")
- (setq got-mail t)))
- (if (file-exists-p crash-box)
- (progn
- (message "Recovering messages from crash box...")
- (vm-gobble-crash-box crash-box)
- (message "Recovering messages from crash box... done")
- (setq got-mail t)))
- (unwind-protect
- (if (car
- (efs-send-cmd
- host user (list 'mkdir c-dir)
- (format "Making crash directory %s" crash-dir)))
- (progn
- (efs-re-read-dir crash-dir)
- (message "Unable to make crash directory %s" crash-dir)
- (ding))
- (or (car
- (efs-send-cmd host user (list 'rename s-file rc-file)
- (format "Checking spool file %s" spool-file)))
- (progn
- (message "Getting new mail from %s..." spool-file)
- ;; The rename above wouldn't have updated the cash.
- (efs-re-read-dir crash-dir)
- (efs-vm-gobble-remote-crash-box remote-crash-file)
- (message "Getting new mail from %s... done" spool-file)
- (setq got-mail t))))
- (condition-case nil
- (efs-send-cmd
- host user (list 'rmdir c-dir)
- "Removing crash directory")
- (error nil))))
- (setq spool-files (cdr spool-files)))
- got-mail))
-
- ;;; Overwrite existing functions
-
- (efs-overwrite-fn "efs" 'vm-get-new-mail)
-
- ;;; end of efs-vm.el
-