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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.
138 lines
4.5 KiB
EmacsLisp
138 lines
4.5 KiB
EmacsLisp
;;; erc-xdcc.el --- XDCC file-server support for ERC
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;; Copyright (C) 2003-2004, 2006-2017 Free Software Foundation, Inc.
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;; Author: Mario Lang <mlang@delysid.org>
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;; Maintainer: emacs-devel@gnu.org
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;; Keywords: comm, processes
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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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;; This file provides a very simple XDCC file server for ERC.
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;;; Code:
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(require 'erc-dcc)
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(defcustom erc-xdcc-files nil
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"List of files to offer via XDCC.
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Your friends should issue \"/ctcp yournick XDCC list\" to see this."
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:group 'erc-dcc
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:type '(repeat file))
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(defcustom erc-xdcc-verbose-flag t
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"Report XDCC CTCP requests in the server buffer."
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:group 'erc-dcc
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:type 'boolean)
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(defcustom erc-xdcc-handler-alist
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'(("help" . erc-xdcc-help)
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("list" . erc-xdcc-list)
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("send" . erc-xdcc-send))
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"Sub-command handler alist for XDCC CTCP queries."
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:group 'erc-dcc
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:type '(alist :key-type (string :tag "Sub-command") :value-type function))
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(defcustom erc-xdcc-help-text
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'(("Hey " nick ", wondering how this works? Pretty easy.")
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("Available commands: XDCC ["
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(mapconcat 'car erc-xdcc-handler-alist "|") "]")
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("Type \"/ctcp " (erc-current-nick)
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" XDCC list\" to see the list of offered files, then type \"/ctcp "
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(erc-current-nick) " XDCC send #\" to get a particular file number."))
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"Help text sent in response to XDCC help command.
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A list of messages, each consisting of strings and expressions, expressions
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being evaluated and should return strings."
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:group 'erc-dcc
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:type '(repeat (repeat :tag "Message" (choice string sexp))))
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;;;###autoload (autoload 'erc-xdcc-mode "erc-xdcc")
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(define-erc-module xdcc nil
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"Act as an XDCC file-server."
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nil nil)
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;;;###autoload
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(defun erc-xdcc-add-file (file)
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"Add a file to `erc-xdcc-files'."
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(interactive "fFilename to add to XDCC: ")
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(if (file-exists-p file)
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(add-to-list 'erc-xdcc-files file)))
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(defun erc-xdcc-reply (proc nick msg)
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(process-send-string proc
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(format "PRIVMSG %s :%s\n" nick msg)))
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;; CTCP query handlers
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(defvar erc-ctcp-query-XDCC-hook '(erc-xdcc)
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"Hook called whenever a CTCP XDCC message is received.")
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(defun erc-xdcc (proc nick login host to query)
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"Handle incoming CTCP XDCC queries."
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(when erc-xdcc-verbose-flag
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(erc-display-message nil 'notice proc
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(format "XDCC %s (%s@%s) sends %S" nick login host query)))
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(let* ((args (cdr (delete "" (split-string query " "))))
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(handler (cdr (assoc (downcase (car args)) erc-xdcc-handler-alist))))
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(if (and handler (functionp handler))
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(funcall handler proc nick login host (cdr args))
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(erc-xdcc-reply
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proc nick
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(format "Unknown XDCC sub-command, try \"/ctcp %s XDCC help\""
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(erc-current-nick))))))
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(defun erc-xdcc-help (proc nick login host args)
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"Send basic help information to NICK."
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(mapc
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(lambda (msg)
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(erc-xdcc-reply proc nick
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(mapconcat (lambda (elt) (if (stringp elt) elt (eval elt))) msg "")))
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erc-xdcc-help-text))
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(defun erc-xdcc-list (proc nick login host args)
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"Show the contents of `erc-xdcc-files' via privmsg to NICK."
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(if (null erc-xdcc-files)
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(erc-xdcc-reply proc nick "No files offered, sorry")
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(erc-xdcc-reply proc nick "Num Filename")
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(erc-xdcc-reply proc nick "--- -------------")
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(let ((n 0))
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(dolist (file erc-xdcc-files)
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(erc-xdcc-reply proc nick
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(format "%02d. %s"
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(setq n (1+ n))
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(erc-dcc-file-to-name file)))))))
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(defun erc-xdcc-send (proc nick login host args)
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"Send a file to NICK."
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(let ((n (string-to-number (car args)))
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(len (length erc-xdcc-files)))
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(cond
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((= len 0)
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(erc-xdcc-reply proc nick "No files offered, sorry"))
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((or (< n 1) (> n len))
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(erc-xdcc-reply proc nick (format "%d out of range" n)))
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(t (erc-dcc-send-file nick (nth (1- n) erc-xdcc-files) proc)))))
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(provide 'erc-xdcc)
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;;; erc-xdcc.el ends here
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;;
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;; Local Variables:
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;; indent-tabs-mode: t
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;; tab-width: 8
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;; End:
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