;;; pop3.el --- Post Office Protocol (RFC 1460) interface
;; Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
-;; 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
+;; 2004, 2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
;; Author: Richard L. Pieri <ratinox@peorth.gweep.net>
;; Maintainer: FSF
;;; Code:
+(eval-when-compile (require 'cl))
(require 'mail-utils)
(defvar parse-time-months)
(defvar pop3-read-point nil)
(defvar pop3-debug nil)
-;; Borrowed from nnheader-accept-process-output in nnheader.el.
-(defvar pop3-read-timeout
- (if (string-match "windows-nt\\|os/2\\|emx\\|cygwin"
- (symbol-name system-type))
- ;; http://thread.gmane.org/v9655t3pjo.fsf@marauder.physik.uni-ulm.de
- ;;
- ;; IIRC, values lower than 1.0 didn't/don't work on Windows/DOS.
- ;;
- ;; There should probably be a runtime test to determine the timing
- ;; resolution, or a primitive to report it. I don't know off-hand
- ;; what's possible. Perhaps better, maybe the Windows/DOS primitive
- ;; could round up non-zero timeouts to a minimum of 1.0?
- 1.0
- 0.1)
- "How long pop3 should wait between checking for the end of output.
+;; Borrowed from nnheader-accept-process-output in nnheader.el. See the
+;; comments there for explanations about the values.
+
+(eval-and-compile
+ (if (and (fboundp 'nnheader-accept-process-output)
+ (boundp 'nnheader-read-timeout))
+ (defalias 'pop3-accept-process-output 'nnheader-accept-process-output)
+ ;; Borrowed from `nnheader.el':
+ (defvar pop3-read-timeout
+ (if (string-match "windows-nt\\|os/2\\|cygwin"
+ (symbol-name system-type))
+ 1.0
+ 0.01)
+ "How long pop3 should wait between checking for the end of output.
Shorter values mean quicker response, but are more CPU intensive.")
-
-;; Borrowed from nnheader-accept-process-output in nnheader.el.
-(defun pop3-accept-process-output (process)
- (accept-process-output
- process
- (truncate pop3-read-timeout)
- (truncate (* (- pop3-read-timeout
- (truncate pop3-read-timeout))
- 1000))))
-
-(defun pop3-movemail (&optional crashbox)
- "Transfer contents of a maildrop to the specified CRASHBOX."
- (or crashbox (setq crashbox (expand-file-name "~/.crashbox")))
+ (defun pop3-accept-process-output (process)
+ (accept-process-output
+ process
+ (truncate pop3-read-timeout)
+ (truncate (* (- pop3-read-timeout
+ (truncate pop3-read-timeout))
+ 1000))))))
+
+(defun pop3-streaming-movemail (file)
+ "Transfer contents of a maildrop to the specified FILE.
+Use streaming commands."
(let* ((process (pop3-open-server pop3-mailhost pop3-port))
- (crashbuf (get-buffer-create " *pop3-retr*"))
- (n 1)
- message-count
- (pop3-password pop3-password))
+ message-count message-total-size)
+ (pop3-logon process)
+ (with-current-buffer (process-buffer process)
+ (let ((size (pop3-stat process)))
+ (setq message-count (car size)
+ message-total-size (cadr size)))
+ (when (plusp message-count)
+ (pop3-send-streaming-command
+ process "RETR" message-count message-total-size)
+ (pop3-write-to-file file)
+ (unless pop3-leave-mail-on-server
+ (pop3-send-streaming-command
+ process "DELE" message-count nil))))
+ (pop3-quit process)
+ t))
+
+(defun pop3-send-streaming-command (process command count total-size)
+ (erase-buffer)
+ (let ((i 1))
+ (while (>= count i)
+ (process-send-string process (format "%s %d\r\n" command i))
+ ;; Only do 100 messages at a time to avoid pipe stalls.
+ (when (zerop (% i 100))
+ (pop3-wait-for-messages process i total-size))
+ (incf i)))
+ (pop3-wait-for-messages process count total-size))
+
+(defun pop3-wait-for-messages (process count total-size)
+ (while (< (pop3-number-of-responses total-size) count)
+ (when total-size
+ (message "pop3 retrieved %dKB (%d%%)"
+ (truncate (/ (buffer-size) 1000))
+ (truncate (* (/ (* (buffer-size) 1.0)
+ total-size) 100))))
+ (nnheader-accept-process-output process)))
+
+(defun pop3-write-to-file (file)
+ (let ((pop-buffer (current-buffer))
+ (start (point-min))
+ beg end
+ temp-buffer)
+ (with-temp-buffer
+ (setq temp-buffer (current-buffer))
+ (with-current-buffer pop-buffer
+ (goto-char (point-min))
+ (while (re-search-forward "^\\+OK" nil t)
+ (forward-line 1)
+ (setq beg (point))
+ (when (re-search-forward "^\\.\r?\n" nil t)
+ (setq start (point))
+ (forward-line -1)
+ (setq end (point)))
+ (with-current-buffer temp-buffer
+ (goto-char (point-max))
+ (let ((hstart (point)))
+ (insert-buffer-substring pop-buffer beg end)
+ (pop3-clean-region hstart (point))
+ (goto-char (point-max))
+ (pop3-munge-message-separator hstart (point))
+ (goto-char (point-max))))))
+ (let ((coding-system-for-write 'binary))
+ (goto-char (point-min))
+ ;; Check whether something inserted a newline at the start and
+ ;; delete it.
+ (when (eolp)
+ (delete-char 1))
+ (write-region (point-min) (point-max) file nil 'nomesg)))))
+
+(defun pop3-number-of-responses (endp)
+ (let ((responses 0))
+ (save-excursion
+ (goto-char (point-min))
+ (while (or (and (re-search-forward "^\\+OK" nil t)
+ (or (not endp)
+ (re-search-forward "^\\.\r?\n" nil t)))
+ (re-search-forward "^-ERR " nil t))
+ (incf responses)))
+ responses))
+
+(defun pop3-logon (process)
+ (let ((pop3-password pop3-password))
;; for debugging only
(if pop3-debug (switch-to-buffer (process-buffer process)))
;; query for password
((equal 'pass pop3-authentication-scheme)
(pop3-user process pop3-maildrop)
(pop3-pass process))
- (t (error "Invalid POP3 authentication scheme")))
+ (t (error "Invalid POP3 authentication scheme")))))
+
+(defun pop3-movemail (&optional crashbox)
+ "Transfer contents of a maildrop to the specified CRASHBOX."
+ (or crashbox (setq crashbox (expand-file-name "~/.crashbox")))
+ (let* ((process (pop3-open-server pop3-mailhost pop3-port))
+ (crashbuf (get-buffer-create " *pop3-retr*"))
+ (n 1)
+ message-count
+ message-sizes)
+ (pop3-logon process)
(setq message-count (car (pop3-stat process)))
+ (when (> message-count 0)
+ (setq message-sizes (pop3-list process)))
(unwind-protect
(while (<= n message-count)
- (message "Retrieving message %d of %d from %s..."
- n message-count pop3-mailhost)
+ (message "Retrieving message %d of %d from %s... (%.1fk)"
+ n message-count pop3-mailhost
+ (/ (cdr (assoc n message-sizes))
+ 1024.0))
(pop3-retr process n crashbuf)
(save-excursion
(set-buffer crashbuf)
(let ((coding-system-for-write 'binary))
(write-region (point-min) (point-max) crashbox t 'nomesg))
(set-buffer (process-buffer process))
- (while (> (buffer-size) 5000)
- (goto-char (point-min))
- (forward-line 50)
- (delete-region (point-min) (point))))
+ (erase-buffer))
(unless pop3-leave-mail-on-server
(pop3-dele process n))
(setq n (+ 1 n))
- (nnheader-accept-process-output process))
+ (pop3-accept-process-output process))
(when (and pop3-leave-mail-on-server
(> n 1))
(message "pop3.el doesn't support UIDL. Setting `pop3-leave-mail-on-server'
(const :tag "SSL/TLS" ssl)
(const starttls)))
+(eval-and-compile
+ (if (fboundp 'set-process-query-on-exit-flag)
+ (defalias 'pop3-set-process-query-on-exit-flag
+ 'set-process-query-on-exit-flag)
+ (defalias 'pop3-set-process-query-on-exit-flag
+ 'process-kill-without-query)))
+
(defun pop3-open-server (mailhost port)
"Open TCP connection to MAILHOST on PORT.
Returns the process associated with the connection."
(pop3-quit process)
(error "POP server doesn't support starttls")))
process))
- (t
+ (t
(open-network-stream "POP" (current-buffer) mailhost port))))
(let ((response (pop3-read-response process t)))
(setq pop3-timestamp
(substring response (or (string-match "<" response) 0)
(+ 1 (or (string-match ">" response) -1)))))
+ (pop3-set-process-query-on-exit-flag process nil)
process)))
;; Support functions
-(defun pop3-process-filter (process output)
- (save-excursion
- (set-buffer (process-buffer process))
- (goto-char (point-max))
- (insert output)))
-
(defun pop3-send-command (process command)
(set-buffer (process-buffer process))
(goto-char (point-max))
nil
(goto-char (point-max))
(insert "\n"))
- (narrow-to-region (point) (point-max))
- (let ((size (- (point-max) (point-min))))
- (goto-char (point-min))
- (widen)
+ (let ((size (- (point-max) (point))))
(forward-line -1)
(insert (format "Content-Length: %s\n" size)))
)))))
))
(defun pop3-list (process &optional msg)
- "Scan listing of available messages.
-This function currently does nothing.")
+ "If MSG is nil, return an alist of (MESSAGE-ID . SIZE) pairs.
+Otherwise, return the size of the message-id MSG"
+ (pop3-send-command process (if msg
+ (format "LIST %d" msg)
+ "LIST"))
+ (let ((response (pop3-read-response process t)))
+ (if msg
+ (string-to-number (nth 2 (split-string response " ")))
+ (let ((start pop3-read-point) end)
+ (save-excursion
+ (set-buffer (process-buffer process))
+ (while (not (re-search-forward "^\\.\r\n" nil t))
+ (pop3-accept-process-output process)
+ (goto-char start))
+ (setq pop3-read-point (point-marker))
+ (goto-char (match-beginning 0))
+ (setq end (point-marker))
+ (mapcar #'(lambda (s) (let ((split (split-string s " ")))
+ (cons (string-to-number (nth 0 split))
+ (string-to-number (nth 1 split)))))
+ (delete "" (split-string (buffer-substring start end)
+ "\r\n"))))))))
(defun pop3-retr (process msg crashbuf)
"Retrieve message-id MSG to buffer CRASHBUF."
(provide 'pop3)
-;; arch-tag: 2facc142-1d74-498e-82af-4659b64cac12
;;; pop3.el ends here
projects / gnus / blobdiff