bc511a64f6
Most of this change is to boilerplate commentary such as license URLs. This change was prompted by ftp://ftp.gnu.org's going-away party, planned for November. Change these FTP URLs to https://ftp.gnu.org instead. Make similar changes for URLs to other organizations moving away from FTP. Also, change HTTP to HTTPS for URLs to gnu.org and fsf.org when this works, as this will further help defend against man-in-the-middle attacks (for this part I omitted the MS-DOS and MS-Windows sources and the test tarballs to keep the workload down). HTTPS is not fully working to lists.gnu.org so I left those URLs alone for now.
351 lines
12 KiB
EmacsLisp
351 lines
12 KiB
EmacsLisp
;;; nndraft.el --- draft article access for Gnus
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;; Copyright (C) 1995-2017 Free Software Foundation, Inc.
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;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
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;; Keywords: news
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;; This file is part of GNU Emacs.
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;; GNU Emacs is free software: you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation, either version 3 of the License, or
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;; (at your option) any later version.
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;; GNU Emacs is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
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;;; Commentary:
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;;; Code:
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(require 'nnheader)
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(require 'nnmail)
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(require 'gnus-start)
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(require 'gnus-group)
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(require 'nnmh)
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(require 'nnoo)
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(require 'mm-util)
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(eval-when-compile (require 'cl))
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;; The nnoo-import at the end, I think.
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(declare-function nndraft-request-list "nndraft" (&rest args) t)
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(nnoo-declare nndraft
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nnmh)
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(defvoo nndraft-directory (nnheader-concat gnus-directory "drafts/")
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"Where nndraft will store its files."
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nnmh-directory)
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(defcustom nndraft-required-headers '(Date)
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"Headers to be generated when saving a draft message.
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The headers in this variable and the ones in `message-required-headers'
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are generated if and only if they are also in `message-draft-headers'."
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:type '(repeat sexp)
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:group 'message-headers) ; FIXME wrong group
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(defvoo nndraft-current-group "" nil nnmh-current-group)
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(defvoo nndraft-get-new-mail nil nil nnmh-get-new-mail)
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(defvoo nndraft-current-directory nil nil nnmh-current-directory)
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(defconst nndraft-version "nndraft 1.0")
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(defvoo nndraft-status-string "" nil nnmh-status-string)
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;;; Interface functions.
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(nnoo-define-basics nndraft)
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(deffoo nndraft-open-server (server &optional defs)
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(nnoo-change-server 'nndraft server defs)
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(cond
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((not (file-exists-p nndraft-directory))
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(nndraft-close-server)
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(nnheader-report 'nndraft "No such file or directory: %s"
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nndraft-directory))
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((not (file-directory-p (file-truename nndraft-directory)))
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(nndraft-close-server)
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(nnheader-report 'nndraft "Not a directory: %s" nndraft-directory))
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(t
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(nnheader-report 'nndraft "Opened server %s using directory %s"
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server nndraft-directory)
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t)))
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(deffoo nndraft-retrieve-headers (articles &optional group server fetch-old)
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(nndraft-possibly-change-group group)
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(with-current-buffer nntp-server-buffer
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(erase-buffer)
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(let (article lines chars)
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;; We don't support fetching by Message-ID.
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(if (stringp (car articles))
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'headers
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(while articles
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(narrow-to-region (point) (point))
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(when (nndraft-request-article
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(setq article (pop articles)) group server (current-buffer))
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(goto-char (point-min))
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(if (search-forward "\n\n" nil t)
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(forward-line -1)
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(goto-char (point-max)))
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(setq lines (count-lines (point) (point-max))
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chars (- (point-max) (point)))
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(delete-region (point) (point-max))
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(goto-char (point-min))
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(insert (format "221 %d Article retrieved.\n" article))
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(insert (format "Lines: %d\nChars: %d\n" lines chars))
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(widen)
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(goto-char (point-max))
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(insert ".\n")))
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(nnheader-fold-continuation-lines)
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'headers))))
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(deffoo nndraft-request-article (id &optional group server buffer)
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(nndraft-possibly-change-group group)
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(when (numberp id)
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;; We get the newest file of the auto-saved file and the
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;; "real" file.
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(let* ((file (nndraft-article-filename id))
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(auto (nndraft-auto-save-file-name file))
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(newest (if (file-newer-than-file-p file auto) file auto))
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(nntp-server-buffer (or buffer nntp-server-buffer)))
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(when (and (file-exists-p newest)
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(let ((nnmail-file-coding-system
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(if (file-newer-than-file-p file auto)
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(if (member group '("drafts" "delayed"))
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message-draft-coding-system
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mm-text-coding-system)
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mm-auto-save-coding-system)))
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(nnmail-find-file newest)))
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(with-current-buffer nntp-server-buffer
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(goto-char (point-min))
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;; If there's a mail header separator in this file,
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;; we remove it.
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(when (re-search-forward
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(concat "^" (regexp-quote mail-header-separator) "$") nil t)
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(replace-match "" t t)))
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t))))
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(deffoo nndraft-request-restore-buffer (article &optional group server)
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"Request a new buffer that is restored to the state of ARTICLE."
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(nndraft-possibly-change-group group)
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(when (nndraft-request-article article group server (current-buffer))
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(message-remove-header "xref")
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(message-remove-header "lines")
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;; Articles in nndraft:queue are considered as sent messages. The
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;; Date field should be the time when they are sent.
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;;(message-remove-header "date")
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t))
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(deffoo nndraft-request-update-info (group info &optional server)
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(nndraft-possibly-change-group group)
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(gnus-info-set-read
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info
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(gnus-update-read-articles (gnus-group-prefixed-name group '(nndraft ""))
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(nndraft-articles) t))
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(let ((marks (nth 3 info)))
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(when marks
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;; Nix out all marks except the `unsend'-able article marks.
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(setcar (nthcdr 3 info)
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(if (assq 'unsend marks)
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(list (assq 'unsend marks))
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nil))))
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t)
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(defun nndraft-generate-headers ()
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(save-excursion
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(message-generate-headers
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(message-headers-to-generate
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nndraft-required-headers message-draft-headers nil))))
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(defun nndraft-update-unread-articles ()
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"Update groups' unread articles in the group buffer."
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(nndraft-request-list)
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(with-current-buffer gnus-group-buffer
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(let* ((groups (mapcar (lambda (elem)
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(gnus-group-prefixed-name (car elem)
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(list 'nndraft "")))
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(nnmail-get-active)))
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(gnus-group-marked (copy-sequence groups))
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;; Don't send delayed articles.
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(gnus-get-new-news-hook nil)
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(inhibit-read-only t))
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(gnus-group-get-new-news-this-group nil t)
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(save-excursion
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(dolist (group groups)
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(unless (and gnus-permanently-visible-groups
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(string-match gnus-permanently-visible-groups
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group))
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(gnus-group-goto-group group)
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(when (zerop (gnus-group-group-unread))
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(gnus-delete-line))))))))
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(deffoo nndraft-request-associate-buffer (group)
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"Associate the current buffer with some article in the draft group."
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(nndraft-open-server "")
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(nndraft-request-group group)
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(nndraft-possibly-change-group group)
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(let ((gnus-verbose-backends nil)
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(buf (current-buffer))
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article file)
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(with-temp-buffer
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(insert-buffer-substring buf)
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(setq article (nndraft-request-accept-article
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group (nnoo-current-server 'nndraft) t 'noinsert)
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file (nndraft-article-filename article)))
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(setq buffer-file-name (expand-file-name file)
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buffer-auto-save-file-name (make-auto-save-file-name))
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(clear-visited-file-modtime)
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(add-hook 'write-contents-functions 'nndraft-generate-headers nil t)
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(add-hook 'after-save-hook 'nndraft-update-unread-articles nil t)
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(message-add-action '(nndraft-update-unread-articles)
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'exit 'postpone 'kill)
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article))
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(deffoo nndraft-request-group (group &optional server dont-check info)
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(nndraft-possibly-change-group group)
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(unless dont-check
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(let* ((pathname (nnmail-group-pathname group nndraft-directory))
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(file-name-coding-system nnmail-pathname-coding-system)
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dir file)
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(nnheader-re-read-dir pathname)
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(setq dir (mapcar (lambda (name) (string-to-number (substring name 1)))
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(ignore-errors (directory-files
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pathname nil "^#[0-9]+#$" t))))
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(dolist (n dir)
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(unless (file-exists-p
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(setq file (expand-file-name (int-to-string n) pathname)))
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(rename-file (nndraft-auto-save-file-name file) file)))))
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(nnoo-parent-function 'nndraft
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'nnmh-request-group
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(list group server dont-check)))
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(deffoo nndraft-request-move-article (article group server accept-form
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&optional last move-is-internal)
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(nndraft-possibly-change-group group)
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(let ((buf (get-buffer-create " *nndraft move*"))
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result)
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(and
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(nndraft-request-article article group server)
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(with-current-buffer buf
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(erase-buffer)
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(insert-buffer-substring nntp-server-buffer)
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(setq result (eval accept-form))
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(kill-buffer (current-buffer))
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result)
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(null (nndraft-request-expire-articles (list article) group server 'force))
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result)))
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(deffoo nndraft-request-expire-articles (articles group &optional server force)
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(nndraft-possibly-change-group group)
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(let* ((nnmh-allow-delete-final t)
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(nnmail-expiry-target 'delete)
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;; FIXME: If we want to move a draft message to an expiry group,
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;; there are things to have to improve:
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;; - Remove a header separator.
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;; - Encode it, including attachments, into a MIME message.
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;;(nnmail-expiry-target
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;; (or (gnus-group-find-parameter
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;; (gnus-group-prefixed-name group (list 'nndraft server))
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;; 'expiry-target t)
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;; nnmail-expiry-target))
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(res (nnoo-parent-function 'nndraft
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'nnmh-request-expire-articles
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(list articles group server force)))
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article)
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;; Delete all the "state" files of articles that have been expired.
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(while articles
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(unless (memq (setq article (pop articles)) res)
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(let ((auto (nndraft-auto-save-file-name
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(nndraft-article-filename article))))
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(when (file-exists-p auto)
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(funcall nnmail-delete-file-function auto)))
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(dolist (backup
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(let ((kept-new-versions 1)
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(kept-old-versions 0))
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(find-backup-file-name
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(nndraft-article-filename article))))
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(when (file-exists-p backup)
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(funcall nnmail-delete-file-function backup)))))
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res))
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(deffoo nndraft-request-accept-article (group &optional server last noinsert)
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(nndraft-possibly-change-group group)
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(let ((gnus-verbose-backends nil))
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(nnoo-parent-function 'nndraft 'nnmh-request-accept-article
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(list group server last noinsert))))
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(deffoo nndraft-request-replace-article (article group buffer)
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(nndraft-possibly-change-group group)
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(let ((nnmail-file-coding-system
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(if (member group '("drafts" "delayed"))
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message-draft-coding-system
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mm-text-coding-system)))
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(nnoo-parent-function 'nndraft 'nnmh-request-replace-article
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(list article group buffer))))
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(deffoo nndraft-request-create-group (group &optional server args)
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(nndraft-possibly-change-group group)
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(if (file-exists-p nndraft-current-directory)
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(if (file-directory-p nndraft-current-directory)
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t
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nil)
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(condition-case ()
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(progn
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(gnus-make-directory nndraft-current-directory)
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t)
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(file-error nil))))
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;;; Low-Level Interface
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(defun nndraft-possibly-change-group (group)
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(when (and group
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(not (equal group nndraft-current-group)))
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(nndraft-open-server "")
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(setq nndraft-current-group group)
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(setq nndraft-current-directory
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(nnheader-concat nndraft-directory group))))
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(defun nndraft-article-filename (article &rest args)
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(apply 'concat
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(file-name-as-directory nndraft-current-directory)
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(int-to-string article)
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args))
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(defun nndraft-auto-save-file-name (file)
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(save-excursion
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(prog1
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(progn
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(set-buffer (get-buffer-create " *draft tmp*"))
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(setq buffer-file-name file)
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(make-auto-save-file-name))
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(kill-buffer (current-buffer)))))
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(defun nndraft-articles ()
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"Return the list of messages in the group."
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(gnus-make-directory nndraft-current-directory)
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(sort
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(mapcar 'string-to-number
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(directory-files nndraft-current-directory nil "\\`[0-9]+\\'" t))
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'<))
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(nnoo-import nndraft
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(nnmh
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nnmh-retrieve-headers
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nnmh-request-group
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nnmh-close-group
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nnmh-request-list))
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(provide 'nndraft)
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;;; nndraft.el ends here
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