(defvar nnimap-split-download-body-default nil
"Internal variable with default value for `nnimap-split-download-body'.")
+(defvar nnimap-keepalive-timer nil)
+(defvar nnimap-process-buffers nil)
+
(defstruct nnimap
- group process commands capabilities select-result newlinep server)
+ group process commands capabilities select-result newlinep server
+ last-command-time)
(defvar nnimap-object nil)
(nnimap-article-ranges (gnus-compress-sequence articles))
(format "(UID RFC822.SIZE BODYSTRUCTURE %s)"
(format
- (if (member "IMAP4REV1"
- (nnimap-capabilities nnimap-object))
+ (if (nnimap-ver4-p)
"BODY.PEEK[HEADER.FIELDS %s]"
"RFC822.HEADER.LINES %s")
(append '(Subject From Date Message-Id
(set (make-local-variable 'nnimap-object)
(make-nnimap :server (nnoo-current-server 'nnimap)))
(push (list buffer (current-buffer)) nnimap-connection-alist)
+ (push (current-buffer) nnimap-process-buffers)
(current-buffer)))
(defun nnimap-open-shell-stream (name buffer host port)
'("login" "password") address port nil (null ports))))
credentials))
+(defun nnimap-keepalive ()
+ (let ((now (current-time)))
+ (dolist (buffer nnimap-process-buffers)
+ (when (buffer-name buffer)
+ (with-current-buffer buffer
+ (when (and nnimap-object
+ (nnimap-last-command-time nnimap-object)
+ (> (time-to-seconds
+ (time-subtract
+ now
+ (nnimap-last-command-time nnimap-object)))
+ ;; More than five minutes since the last command.
+ (* 5 60)))
+ (nnimap-send-command "NOOP")))))))
+
(defun nnimap-open-connection (buffer)
+ (unless nnimap-keepalive-timer
+ (setq nnimap-keepalive-timer (run-at-time (* 60 15) (* 60 15)
+ 'nnimap-keepalive)))
(with-current-buffer (nnimap-make-process-buffer buffer)
(let* ((coding-system-for-read 'binary)
(coding-system-for-write 'binary)
(gnus-set-process-query-on-exit-flag (nnimap-process nnimap-object) nil)
(when (setq connection-result (nnimap-wait-for-connection))
(when (eq nnimap-stream 'starttls)
- (nnimap-send-command "STARTTLS")
+ (nnimap-command "STARTTLS")
(starttls-negotiate (nnimap-process nnimap-object)))
(unless (equal connection-result "PREAUTH")
(if (not (setq credentials
(deffoo nnimap-request-article (article &optional group server to-buffer)
(with-current-buffer nntp-server-buffer
(let ((result (nnimap-possibly-change-group group server))
- parts)
+ parts structure)
(when (stringp article)
(setq article (nnimap-find-article-by-message-id group article)))
(when (and result
(nnimap-command "UID FETCH %d (BODYSTRUCTURE)" article)
(goto-char (point-min))
(when (re-search-forward "FETCH.*BODYSTRUCTURE" nil t)
- (let ((structure (ignore-errors (read (current-buffer)))))
- (setq parts (nnimap-find-wanted-parts structure))))))
- (setq result
- (nnimap-command
- (if (member "IMAP4REV1" (nnimap-capabilities nnimap-object))
- "UID FETCH %d BODY.PEEK[]"
- "UID FETCH %d RFC822.PEEK")
- article))
- ;; Check that we really got an article.
- (goto-char (point-min))
- (unless (looking-at "\\* [0-9]+ FETCH")
- (setq result nil)))
- (let ((buffer (nnimap-find-process-buffer (current-buffer))))
- (when (car result)
- (with-current-buffer (or to-buffer nntp-server-buffer)
- (insert-buffer-substring buffer)
- (goto-char (point-min))
- (let ((bytes (nnimap-get-length)))
- (delete-region (line-beginning-position)
- (progn (forward-line 1) (point)))
- (goto-char (+ (point) bytes))
- (delete-region (point) (point-max))
- (nnheader-ms-strip-cr))
- (cons group article))))))))
+ (setq structure (ignore-errors (read (current-buffer)))
+ parts (nnimap-find-wanted-parts structure)))))
+ (when (if parts
+ (nnimap-get-partial-article article parts structure)
+ (nnimap-get-whole-article article))
+ (let ((buffer (current-buffer)))
+ (with-current-buffer (or to-buffer nntp-server-buffer)
+ (erase-buffer)
+ (insert-buffer-substring buffer)
+ (nnheader-ms-strip-cr)
+ (cons group article)))))))))
+
+(defun nnimap-get-whole-article (article)
+ (let ((result
+ (nnimap-command
+ (if (nnimap-ver4-p)
+ "UID FETCH %d BODY.PEEK[]"
+ "UID FETCH %d RFC822.PEEK")
+ article)))
+ ;; Check that we really got an article.
+ (goto-char (point-min))
+ (unless (looking-at "\\* [0-9]+ FETCH")
+ (setq result nil))
+ (when result
+ (goto-char (point-min))
+ (let ((bytes (nnimap-get-length)))
+ (delete-region (line-beginning-position)
+ (progn (forward-line 1) (point)))
+ (goto-char (+ (point) bytes))
+ (delete-region (point) (point-max)))
+ t)))
+
+(defun nnimap-ver4-p ()
+ (member "IMAP4REV1" (nnimap-capabilities nnimap-object)))
+
+(defun nnimap-get-partial-article (article parts structure)
+ (let ((result
+ (nnimap-command
+ "UID FETCH %d (%s %s)"
+ article
+ (if (nnimap-ver4-p)
+ "BODY.PEEK[HEADER]"
+ "RFC822.HEADER")
+ (if (nnimap-ver4-p)
+ (mapconcat (lambda (part)
+ (format "BODY.PEEK[%s]" part))
+ parts " ")
+ (mapconcat (lambda (part)
+ (format "RFC822.PEEK[%s]" part))
+ parts " ")))))
+ (when result
+ (nnimap-convert-partial-article structure))))
+
+(defun nnimap-convert-partial-article (structure)
+ ;; First just skip past the headers.
+ (goto-char (point-min))
+ (let ((bytes (nnimap-get-length))
+ id parts)
+ ;; Delete "FETCH" line.
+ (delete-region (line-beginning-position)
+ (progn (forward-line 1) (point)))
+ (goto-char (+ (point) bytes))
+ ;; Collect all the body parts.
+ (while (looking-at ".*BODY\\[\\([.0-9]+\\)\\]")
+ (setq id (match-string 1)
+ bytes (nnimap-get-length))
+ (beginning-of-line)
+ (delete-region (point) (progn (forward-line 1) (point)))
+ (push (list id (buffer-substring (point) (+ (point) bytes)))
+ parts)
+ (delete-region (point) (+ (point) bytes)))
+ ;; Delete trailing junk.
+ (delete-region (point) (point-max))
+ ;; Now insert all the parts again where they fit in the structure.
+ (nnimap-insert-partial-structure structure parts)
+ t))
+
+(defun nnimap-insert-partial-structure (structure parts &optional subp)
+ (let ((type (car (last structure 4)))
+ (boundary (cadr (member "BOUNDARY" (car (last structure 3))))))
+ (when subp
+ (insert (format "Content-type: multipart/%s; boundary=%S\n\n"
+ (downcase type) boundary)))
+ (while (not (stringp (car structure)))
+ (insert "\n--" boundary "\n")
+ (if (consp (caar structure))
+ (nnimap-insert-partial-structure (pop structure) parts t)
+ (let ((bit (pop structure)))
+ (insert (format "Content-type: %s/%s"
+ (downcase (nth 0 bit))
+ (downcase (nth 1 bit))))
+ (if (member "CHARSET" (nth 2 bit))
+ (insert (format
+ "; charset=%S\n" (cadr (member "CHARSET" (nth 2 bit)))))
+ (insert "\n"))
+ (insert (format "Content-transfer-encoding: %s\n"
+ (nth 5 bit)))
+ (insert "\n")
+ (when (assoc (nth 9 bit) parts)
+ (insert (cadr (assoc (nth 9 bit) parts)))))))
+ (insert "\n--" boundary "--\n")))
(defun nnimap-find-wanted-parts (structure)
(message-flatten-list (nnimap-find-wanted-parts-1 structure "")))
(number-to-string num)
(format "%s.%s" prefix num)))
parts)
- (let ((type (format "%s/%s" (nth 0 sub) (nth 1 sub))))
- (when (string-match nnimap-fetch-partial-articles type)
- (push (if (string= prefix "")
+ (let ((type (format "%s/%s" (nth 0 sub) (nth 1 sub)))
+ (id (if (string= prefix "")
(number-to-string num)
- (format "%s.%s" prefix num))
- parts)))
- (incf num))))
+ (format "%s.%s" prefix num))))
+ (setcar (nthcdr 9 sub) id)
+ (when (string-match nnimap-fetch-partial-articles type)
+ (push id parts))))
+ (incf num)))
(nreverse parts)))
(deffoo nnimap-request-group (group &optional server dont-check info)
(if (or completep
(not (gnus-active group)))
(gnus-set-active group
- (if (and low high)
- (cons low high)
+ (cond
+ ((and low high)
+ (cons low high))
+ (uidnext
;; No articles in this group.
- (cons uidnext (1- uidnext))))
+ (cons uidnext (1- uidnext)))
+ (start-article
+ (cons start-article (1- start-article)))
+ (t
+ ;; No articles and no uidnext.
+ nil)))
(setcdr (gnus-active group) (or high (1- uidnext))))
- (unless high
+ (when (and (not high)
+ uidnext)
(setq high (1- uidnext)))
;; Then update the list of read articles.
(let* ((unread
(defun nnimap-command (&rest args)
(erase-buffer)
+ (setf (nnimap-last-command-time nnimap-object) (current-time))
(let* ((sequence (apply #'nnimap-send-command args))
(response (nnimap-get-response sequence)))
(if (equal (caar response) "OK")
(nnimap-article-ranges articles)
(format "(UID %s%s)"
(format
- (if (member "IMAP4REV1"
- (nnimap-capabilities nnimap-object))
+ (if (nnimap-ver4-p)
"BODY.PEEK[HEADER] BODY.PEEK"
"RFC822.PEEK"))
(if nnimap-split-download-body-default