lisp/gnus/nngateway.el

   1 ;;; nngateway.el --- posting news via mail gateways
   2
   3 ;; Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
   4 ;;   2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
   5
   6 ;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
   7 ;; Keywords: news, mail
   8
   9 ;; This file is part of GNU Emacs.
  10
  11 ;; GNU Emacs is free software: you can redistribute it and/or modify
  12 ;; it under the terms of the GNU General Public License as published by
  13 ;; the Free Software Foundation, either version 3 of the License, or
  14 ;; (at your option) any later version.
  15
  16 ;; GNU Emacs is distributed in the hope that it will be useful,
  17 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19 ;; GNU General Public License for more details.
  20
  21 ;; You should have received a copy of the GNU General Public License
  22 ;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
  23
  24 ;;; Commentary:
  25
  26 ;;; Code:
  27
  28 (eval-when-compile (require 'cl))
  29 (require 'nnoo)
  30 (require 'message)
  31
  32 (nnoo-declare nngateway)
  33
  34 (defvoo nngateway-address nil
  35   "Address of the mail-to-news gateway.")
  36
  37 (defvoo nngateway-header-transformation 'nngateway-simple-header-transformation
  38   "Function to be called to rewrite the news headers into mail headers.
  39 It is called narrowed to the headers to be transformed with one
  40 parameter -- the gateway address.")
  41
  42 ;;; Interface functions
  43
  44 (nnoo-define-basics nngateway)
  45
  46 (deffoo nngateway-open-server (server &optional defs)
  47   (if (nngateway-server-opened server)
  48       t
  49     (unless (assq 'nngateway-address defs)
  50       (setq defs (append defs (list (list 'nngateway-address server)))))
  51     (nnoo-change-server 'nngateway server defs)))
  52
  53 (deffoo nngateway-request-post (&optional server)
  54   (when (or (nngateway-server-opened server)
  55             (nngateway-open-server server))
  56     ;; Rewrite the header.
  57     (let ((buf (current-buffer)))
  58       (with-temp-buffer
  59         (insert-buffer-substring buf)
  60         (message-narrow-to-head)
  61         (funcall nngateway-header-transformation nngateway-address)
  62         (goto-char (point-max))
  63         (insert mail-header-separator "\n")
  64         (widen)
  65         (let (message-required-mail-headers)
  66           (funcall (or message-send-mail-real-function
  67                        message-send-mail-function)))
  68         t))))
  69
  70 ;;; Internal functions
  71
  72 (defun nngateway-simple-header-transformation (gateway)
  73   "Transform the headers to use GATEWAY."
  74   (let ((newsgroups (mail-fetch-field "newsgroups")))
  75     (message-remove-header "to")
  76     (message-remove-header "cc")
  77     (goto-char (point-min))
  78     (insert "To: " (nnheader-replace-chars-in-string newsgroups ?. ?-)
  79             "@" gateway "\n")))
  80
  81 (defun nngateway-mail2news-header-transformation (gateway)
  82   "Transform the headers for sending to a mail2news gateway."
  83   (message-remove-header "to")
  84   (message-remove-header "cc")
  85   (goto-char (point-min))
  86   (insert "To: " gateway "\n"))
  87
  88 (nnoo-define-skeleton nngateway)
  89
  90 (provide 'nngateway)
  91
  92 ;; arch-tag: f7ecb92e-b10c-43d5-9a9b-1314233341fc
  93 ;;; nngateway.el ends here