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.
266 lines
8.3 KiB
EmacsLisp
266 lines
8.3 KiB
EmacsLisp
;;; nnagent.el --- offline backend for Gnus
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;; Copyright (C) 1997-2017 Free Software Foundation, Inc.
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;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
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;; Keywords: news, mail
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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 'nnoo)
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(eval-when-compile (require 'cl))
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(require 'gnus-agent)
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(require 'nnml)
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(nnoo-declare nnagent
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nnml)
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(defconst nnagent-version "nnagent 1.0")
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(defvoo nnagent-directory nil
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"Internal variable."
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nnml-directory)
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(defvoo nnagent-active-file nil
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"Internal variable."
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nnml-active-file)
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(defvoo nnagent-newsgroups-file nil
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"Internal variable."
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nnml-newsgroups-file)
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(defvoo nnagent-get-new-mail nil
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"Internal variable."
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nnml-get-new-mail)
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;;; Interface functions.
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(nnoo-define-basics nnagent)
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(defun nnagent-server (server)
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(and server (format "%s+%s" (car gnus-command-method) server)))
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(deffoo nnagent-open-server (server &optional defs)
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(setq defs
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`((nnagent-directory ,(gnus-agent-directory))
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(nnagent-active-file ,(gnus-agent-lib-file "active"))
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(nnagent-newsgroups-file ,(gnus-agent-lib-file "newsgroups"))
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(nnagent-get-new-mail nil)))
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(nnoo-change-server 'nnagent
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(nnagent-server server)
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defs)
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(let ((dir (gnus-agent-directory))
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err)
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(cond
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((not (condition-case arg
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(file-exists-p dir)
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(ftp-error (setq err (format "%s" arg)))))
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(nnagent-close-server)
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(nnheader-report
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'nnagent (or err
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(format "No such file or directory: %s" dir))))
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((not (file-directory-p (file-truename dir)))
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(nnagent-close-server)
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(nnheader-report 'nnagent "Not a directory: %s" dir))
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(t
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(nnheader-report 'nnagent "Opened server %s using directory %s"
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server dir)
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t))))
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(deffoo nnagent-retrieve-groups (groups &optional server)
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(save-excursion
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(cond
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((file-exists-p (gnus-agent-lib-file "groups"))
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(nnmail-find-file (gnus-agent-lib-file "groups"))
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'groups)
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((file-exists-p (gnus-agent-lib-file "active"))
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(nnmail-find-file (gnus-agent-lib-file "active"))
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'active)
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(t nil))))
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(defun nnagent-request-type (group article)
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(unless (stringp article)
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(let ((gnus-agent nil))
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(if (not (gnus-check-backend-function
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'request-type (car gnus-command-method)))
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'unknown
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(funcall (gnus-get-function gnus-command-method 'request-type)
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(gnus-group-real-name group) article)))))
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(deffoo nnagent-request-newgroups (date server)
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nil)
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(deffoo nnagent-request-update-info (group info &optional server)
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nil)
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(deffoo nnagent-request-post (&optional server)
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(gnus-agent-insert-meta-information 'news gnus-command-method)
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(gnus-request-accept-article "nndraft:queue" nil t t))
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(deffoo nnagent-request-set-mark (group action server)
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(mm-with-unibyte-buffer
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(insert "(gnus-agent-synchronize-group-flags \""
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group
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"\" '")
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(gnus-pp action)
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(insert " \""
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(gnus-method-to-server gnus-command-method)
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"\"")
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(insert ")\n")
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(let ((coding-system-for-write nnheader-file-coding-system))
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(write-region (point-min) (point-max) (gnus-agent-lib-file "flags")
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t 'silent)))
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;; Also set the marks for the original back end that keeps marks in
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;; the local system.
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(let ((gnus-agent nil))
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(when (and (memq (car gnus-command-method) '(nntp))
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(gnus-check-backend-function 'request-set-mark
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(car gnus-command-method)))
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(funcall (gnus-get-function gnus-command-method 'request-set-mark)
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group action server)))
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nil)
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(deffoo nnagent-retrieve-headers (articles &optional group server fetch-old)
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(let ((file (gnus-agent-article-name ".overview" group))
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arts n first)
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(save-excursion
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(gnus-agent-load-alist group)
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(setq arts (gnus-sorted-difference
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articles (mapcar 'car gnus-agent-article-alist)))
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;; Assume that articles with smaller numbers than the first one
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;; Agent knows are gone.
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(setq first (caar gnus-agent-article-alist))
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(when first
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(while (and arts (< (car arts) first))
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(pop arts)))
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(set-buffer nntp-server-buffer)
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(erase-buffer)
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(let ((file-name-coding-system nnmail-pathname-coding-system))
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(nnheader-insert-nov-file file (car articles)))
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(goto-char (point-min))
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(gnus-parse-without-error
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(while (and arts (not (eobp)))
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(setq n (read (current-buffer)))
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(when (> n (car arts))
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(beginning-of-line))
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(while (and arts (> n (car arts)))
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(insert (format
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"%d\t[Undownloaded article %d]\tGnus Agent\t\t\t\n"
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(car arts) (car arts)))
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(pop arts))
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(when (and arts (= n (car arts)))
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(pop arts))
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(forward-line 1)))
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(while arts
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(insert (format
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"%d\t[Undownloaded article %d]\tGnus Agent\t\t\t\n"
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(car arts) (car arts)))
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(pop arts))
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(if (and fetch-old
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(not (numberp fetch-old)))
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t ; Don't remove anything.
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(nnheader-nov-delete-outside-range
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(if fetch-old (max 1 (- (car articles) fetch-old))
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(car articles))
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(car (last articles)))
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t)
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'nov)))
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(deffoo nnagent-request-expire-articles (articles group &optional server force)
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articles)
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(deffoo nnagent-request-group (group &optional server dont-check info)
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(nnoo-parent-function 'nnagent 'nnml-request-group
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(list group (nnagent-server server) dont-check info)))
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(deffoo nnagent-close-group (group &optional server)
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(nnoo-parent-function 'nnagent 'nnml-close-group
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(list group (nnagent-server server))))
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(deffoo nnagent-request-accept-article (group &optional server last)
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(nnoo-parent-function 'nnagent 'nnml-request-accept-article
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(list group (nnagent-server server) last)))
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(deffoo nnagent-request-article (id &optional group server buffer)
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(nnoo-parent-function 'nnagent 'nnml-request-article
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(list id group (nnagent-server server) buffer)))
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(deffoo nnagent-request-create-group (group &optional server args)
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(nnoo-parent-function 'nnagent 'nnml-request-create-group
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(list group (nnagent-server server) args)))
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(deffoo nnagent-request-delete-group (group &optional force server)
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(nnoo-parent-function 'nnagent 'nnml-request-delete-group
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(list group force (nnagent-server server))))
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(deffoo nnagent-request-list (&optional server)
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(nnoo-parent-function 'nnagent 'nnml-request-list
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(list (nnagent-server server))))
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(deffoo nnagent-request-list-newsgroups (&optional server)
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(nnoo-parent-function 'nnagent 'nnml-request-list-newsgroups
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(list (nnagent-server server))))
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(deffoo nnagent-request-move-article
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(article group server accept-form &optional last move-is-internal)
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(nnoo-parent-function 'nnagent 'nnml-request-move-article
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(list article group (nnagent-server server)
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accept-form last move-is-internal)))
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(deffoo nnagent-request-rename-group (group new-name &optional server)
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(nnoo-parent-function 'nnagent 'nnml-request-rename-group
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(list group new-name (nnagent-server server))))
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(deffoo nnagent-request-scan (&optional group server)
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(nnoo-parent-function 'nnagent 'nnml-request-scan
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(list group (nnagent-server server))))
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(deffoo nnagent-set-status (article name value &optional group server)
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(nnoo-parent-function 'nnagent 'nnml-set-status
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(list article name value group (nnagent-server server))))
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(deffoo nnagent-server-opened (&optional server)
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(nnoo-parent-function 'nnagent 'nnml-server-opened
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(list (nnagent-server server))))
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(deffoo nnagent-status-message (&optional server)
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(nnoo-parent-function 'nnagent 'nnml-status-message
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(list (nnagent-server server))))
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(deffoo nnagent-request-regenerate (server)
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(nnoo-parent-function 'nnagent 'nnml-request-regenerate
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(list (nnagent-server server))))
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(deffoo nnagent-retrieve-group-data-early (server infos)
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nil)
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;; Use nnml functions for just about everything.
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(nnoo-import nnagent
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(nnml))
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;;; Internal functions.
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(provide 'nnagent)
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;;; nnagent.el ends here
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