91 lines
2.8 KiB
EmacsLisp
91 lines
2.8 KiB
EmacsLisp
;;; nngateway.el --- posting news via mail gateways -*- lexical-binding: t; -*-
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;; Copyright (C) 1996-2024 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 'nnoo)
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(require 'message)
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(nnoo-declare nngateway)
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(defvoo nngateway-address nil
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"Address of the mail-to-news gateway.")
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(defvoo nngateway-header-transformation 'nngateway-simple-header-transformation
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"Function to be called to rewrite the news headers into mail headers.
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It is called narrowed to the headers to be transformed with one
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parameter -- the gateway address.")
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;;; Interface functions
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(nnoo-define-basics nngateway)
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(deffoo nngateway-open-server (server &optional defs)
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(if (nngateway-server-opened server)
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t
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(unless (assq 'nngateway-address defs)
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(setq defs (append defs (list (list 'nngateway-address server)))))
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(nnoo-change-server 'nngateway server defs)))
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(deffoo nngateway-request-post (&optional server)
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(when (or (nngateway-server-opened server)
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(nngateway-open-server server))
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;; Rewrite the header.
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(let ((buf (current-buffer)))
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(with-temp-buffer
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(insert-buffer-substring buf)
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(message-narrow-to-head)
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(funcall nngateway-header-transformation nngateway-address)
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(goto-char (point-max))
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(insert mail-header-separator "\n")
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(widen)
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(let (message-required-mail-headers)
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(funcall (or message-send-mail-real-function
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message-send-mail-function)))
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t))))
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;;; Internal functions
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(defun nngateway-simple-header-transformation (gateway)
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"Transform the headers to use GATEWAY."
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(let ((newsgroups (mail-fetch-field "newsgroups")))
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(message-remove-header "to")
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(message-remove-header "cc")
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(goto-char (point-min))
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(insert "To: " (nnheader-replace-chars-in-string newsgroups ?. ?-)
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"@" gateway "\n")))
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(defun nngateway-mail2news-header-transformation (gateway)
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"Transform the headers for sending to a mail2news gateway."
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(message-remove-header "to")
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(message-remove-header "cc")
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(goto-char (point-min))
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(insert "To: " gateway "\n"))
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(nnoo-define-skeleton nngateway)
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(provide 'nngateway)
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;;; nngateway.el ends here
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