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.
210 lines
6.9 KiB
EmacsLisp
210 lines
6.9 KiB
EmacsLisp
;;; erc-netsplit.el --- Reduce JOIN/QUIT messages on netsplits
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;; Copyright (C) 2002-2004, 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
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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 module hides quit/join messages if a netsplit occurs.
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;; To enable, add the following to your init file:
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;; (require 'erc-netsplit)
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;; (erc-netsplit-mode 1)
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;;; Code:
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(require 'erc)
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(defgroup erc-netsplit nil
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"Netsplit detection tries to automatically figure when a
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netsplit happens, and filters the QUIT messages. It also keeps
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track of netsplits, so that it can filter the JOIN messages on a netjoin too."
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:group 'erc)
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;;;###autoload (autoload 'erc-netsplit-mode "erc-netsplit")
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(define-erc-module netsplit nil
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"This mode hides quit/join messages if a netsplit occurs."
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((erc-netsplit-install-message-catalogs)
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(add-hook 'erc-server-JOIN-functions 'erc-netsplit-JOIN)
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(add-hook 'erc-server-MODE-functions 'erc-netsplit-MODE)
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(add-hook 'erc-server-QUIT-functions 'erc-netsplit-QUIT)
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(add-hook 'erc-timer-hook 'erc-netsplit-timer))
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((remove-hook 'erc-server-JOIN-functions 'erc-netsplit-JOIN)
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(remove-hook 'erc-server-MODE-functions 'erc-netsplit-MODE)
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(remove-hook 'erc-server-QUIT-functions 'erc-netsplit-QUIT)
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(remove-hook 'erc-timer-hook 'erc-netsplit-timer)))
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(defcustom erc-netsplit-show-server-mode-changes-flag nil
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"Set to t to enable display of server mode changes."
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:group 'erc-netsplit
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:type 'boolean)
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(defcustom erc-netsplit-debug nil
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"If non-nil, debug messages will be shown in the
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sever buffer."
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:group 'erc-netsplit
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:type 'boolean)
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(defcustom erc-netsplit-regexp
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"^[^ @!\"\n]+\\.[^ @!\n]+ [^ @!\n]+\\.[^ @!\"\n]+$"
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"This regular expression should match quit reasons produced
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by netsplits."
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:group 'erc-netsplit
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:type 'regexp)
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(defcustom erc-netsplit-hook nil
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"Run whenever a netsplit is detected the first time.
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Args: PROC is the process the netsplit originated from and
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SPLIT is the netsplit (e.g. \"server.name.1 server.name.2\")."
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:group 'erc-hooks
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:type 'hook)
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(defcustom erc-netjoin-hook nil
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"Run whenever a netjoin is detected the first time.
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Args: PROC is the process the netjoin originated from and
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SPLIT is the netsplit (e.g. \"server.name.1 server.name.2\")."
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:group 'erc-hooks
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:type 'hook)
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(defvar erc-netsplit-list nil
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"This is a list of the form
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\((\"a.b.c.d e.f.g\" TIMESTAMP FIRST-JOIN \"nick1\" ... \"nickn\") ...)
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where FIRST-JOIN is t or nil, depending on whether or not the first
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join from that split has been detected or not.")
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(make-variable-buffer-local 'erc-netsplit-list)
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(defun erc-netsplit-install-message-catalogs ()
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(erc-define-catalog
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'english
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'((netsplit . "netsplit: %s")
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(netjoin . "netjoin: %s, %N were split")
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(netjoin-done . "netjoin: All lost souls are back!")
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(netsplit-none . "No netsplits in progress")
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(netsplit-wholeft . "split: %s missing: %n %t"))))
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(defun erc-netsplit-JOIN (proc parsed)
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"Show/don't show rejoins."
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(let ((nick (erc-response.sender parsed))
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(no-next-hook nil))
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(dolist (elt erc-netsplit-list)
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(if (member nick (nthcdr 3 elt))
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(progn
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(if (not (nth 2 elt))
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(progn
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(erc-display-message
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parsed 'notice (process-buffer proc)
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'netjoin ?s (car elt) ?N (length (nthcdr 3 elt)))
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(setcar (nthcdr 2 elt) t)
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(run-hook-with-args 'erc-netjoin-hook proc (car elt))))
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;; need to remove this nick, perhaps the whole entry here.
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;; Note that by removing the nick now, we can't tell if further
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;; join messages (for other channels) should also be
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;; suppressed.
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(if (null (nthcdr 4 elt))
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(progn
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(erc-display-message
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parsed 'notice (process-buffer proc)
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'netjoin-done ?s (car elt))
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(setq erc-netsplit-list (delq elt erc-netsplit-list)))
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(delete nick elt))
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(setq no-next-hook t))))
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no-next-hook))
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(defun erc-netsplit-MODE (proc parsed)
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"Hide mode changes from servers."
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;; regexp matches things with a . in them, and no ! or @ in them.
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(when (string-match "^[^@!\n]+\\.[^@!\n]+$" (erc-response.sender parsed))
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(and erc-netsplit-debug
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(erc-display-message
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parsed 'notice (process-buffer proc)
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"[debug] server mode change."))
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(not erc-netsplit-show-server-mode-changes-flag)))
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(defun erc-netsplit-QUIT (proc parsed)
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"Detect netsplits."
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(let ((split (erc-response.contents parsed))
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(nick (erc-response.sender parsed))
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ass)
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(when (string-match erc-netsplit-regexp split)
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(setq ass (assoc split erc-netsplit-list))
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(if ass
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;; element for this netsplit exists already
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(progn
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(setcdr (nthcdr 2 ass) (cons nick (nthcdr 3 ass)))
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(when (nth 2 ass)
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;; There was already a netjoin for this netsplit, it
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;; seems like the old one didn't get finished...
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(erc-display-message
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parsed 'notice (process-buffer proc)
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'netsplit ?s split)
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(setcar (nthcdr 2 ass) t)
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(run-hook-with-args 'erc-netsplit-hook proc split)))
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;; element for this netsplit does not yet exist
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(setq erc-netsplit-list
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(cons (list split
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(erc-current-time)
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nil
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nick)
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erc-netsplit-list))
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(erc-display-message
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parsed 'notice (process-buffer proc)
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'netsplit ?s split)
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(run-hook-with-args 'erc-netsplit-hook proc split))
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t)))
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(defun erc-netsplit-timer (now)
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"Clean cruft from `erc-netsplit-list' older than 10 minutes."
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(when erc-server-connected
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(dolist (elt erc-netsplit-list)
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(when (> (erc-time-diff (cadr elt) now) 600)
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(when erc-netsplit-debug
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(erc-display-message
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nil 'notice (current-buffer)
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(concat "Netsplit: Removing " (car elt))))
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(setq erc-netsplit-list (delq elt erc-netsplit-list))))))
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;;;###autoload
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(defun erc-cmd-WHOLEFT ()
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"Show who's gone."
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(erc-with-server-buffer
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(if (null erc-netsplit-list)
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(erc-display-message
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nil 'notice 'active
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'netsplit-none)
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(dolist (elt erc-netsplit-list)
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(erc-display-message
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nil 'notice 'active
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'netsplit-wholeft ?s (car elt)
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?n (mapconcat 'erc-extract-nick (nthcdr 3 elt) " ")
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?t (if (nth 2 elt)
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"(joining)"
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"")))))
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t)
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(defalias 'erc-cmd-WL 'erc-cmd-WHOLEFT)
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(provide 'erc-netsplit)
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;;; erc-netsplit.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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