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1137 lines
44 KiB
EmacsLisp
1137 lines
44 KiB
EmacsLisp
;;; erc-dcc.el --- CTCP DCC module for ERC
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;; Copyright (C) 1993, 1994, 1995, 1998, 2002, 2003, 2004, 2006
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;; Free Software Foundation, Inc.
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;; Author: Ben A. Mesander <ben@gnu.ai.mit.edu>
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;; Noah Friedman <friedman@prep.ai.mit.edu>
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;; Per Persson <pp@sno.pp.se>
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;; Maintainer: mlang@delysid.org
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;; Keywords: comm, processes
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;; Created: 1994-01-23
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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 2, or (at your option)
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;; 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; see the file COPYING. If not, write to the
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;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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;; Boston, MA 02110-1301, USA.
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;;; Commentary:
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;; This file provides Direct Client-to-Client support for ERC.
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;;
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;; The original code was taken from zenirc-dcc.el, heavily mangled and
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;; rewritten to support the way how ERC operates. Server socket support
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;; was added for DCC CHAT and SEND afterwards. Thanks
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;; to the original authors for their work.
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;;
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;; To use this file, put
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;; (require 'erc-dcc)
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;; in your .emacs.
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;;
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;; Provided commands
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;; /dcc chat nick - Either accept pending chat offer from nick, or offer
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;; DCC chat to nick
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;; /dcc close type [nick] - Close DCC connection (SEND/GET/CHAT) with nick
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;; /dcc get nick [file] - Accept DCC offer from nick
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;; /dcc list - List all DCC offers/connections
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;; /dcc send nick file - Offer DCC SEND to nick
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;;
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;; Please note that offering DCC connections (offering chats and sending
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;; files) is only supported with Emacs 21.3.50 (CVS).
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;;; Code:
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(require 'erc)
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(eval-when-compile
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(require 'cl)
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(require 'pcomplete))
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(defgroup erc-dcc nil
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"DCC stands for Direct Client Communication, where you and your
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friend's client programs connect directly to each other,
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bypassing IRC servers and their occasional \"lag\" or \"split\"
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problems. Like /MSG, the DCC chat is completely private.
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Using DCC get and send, you can transfer files directly from and to other
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IRC users."
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:group 'erc)
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(defcustom erc-verbose-dcc t
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"*If non-nil, be verbose about DCC activity reporting."
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:group 'erc-dcc
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:type 'boolean)
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(defvar erc-dcc-list nil
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"List of DCC connections. Looks like:
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((:nick \"nick!user@host\" :type GET :peer proc :parent proc :size size :file file)
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(:nick \"nick!user@host\" :type CHAT :peer proc :parent proc)
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(:nick \"nick\" :type SEND :peer server-proc :parent parent-proc :file
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file :sent <marker> :confirmed <marker>))
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:nick - a user or userhost for the peer. combine with :parent to reach them
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:type - the type of DCC connection - SEND for outgoing files, GET for
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incoming, and CHAT for both directions. To tell which end started
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the DCC chat, look at :peer
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:peer - the other end of the DCC connection. In the case of outgoing DCCs,
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this represents a server process until a connection is established
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:parent - the server process where the dcc connection was established.
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Note that this can be nil or an invalid process since a DCC
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connection is in general independent from a particular server
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connection after it was established.
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:file - for outgoing sends, the full path to the file. for incoming sends,
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the suggested filename or vetted filename
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:size - size of the file, may be nil on incoming DCCs")
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(defun erc-dcc-list-add (type nick peer parent &rest args)
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"Add a new entry of type TYPE to `erc-dcc-list' and return it."
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(car
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(setq erc-dcc-list
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(cons
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(append (list :nick nick :type type :peer peer :parent parent) args)
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erc-dcc-list))))
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;; This function takes all the usual args as open-network-stream, plus one
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;; more: the entry data from erc-dcc-list for this particular process.
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(defvar erc-dcc-connect-function 'erc-dcc-open-network-stream)
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(defun erc-dcc-open-network-stream (procname buffer addr port entry)
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(if nil; (fboundp 'open-network-stream-nowait) ;; this currently crashes
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;; cvs emacs
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(open-network-stream-nowait procname buffer addr port)
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(open-network-stream procname buffer addr port)))
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(erc-define-catalog
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'english
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'((dcc-chat-discarded
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. "DCC: previous chat request from %n (%u@%h) discarded")
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(dcc-chat-ended . "DCC: chat with %n ended %t: %e")
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(dcc-chat-no-request . "DCC: chat request from %n not found")
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(dcc-chat-offered . "DCC: chat offered by %n (%u@%h:%p)")
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(dcc-chat-offer . "DCC: offering chat to %n")
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(dcc-chat-accept . "DCC: accepting chat from %n")
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(dcc-chat-privmsg . "=%n= %m")
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(dcc-closed . "DCC: Closed %T from %n")
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(dcc-command-undefined
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. "DCC: %c undefined subcommand. GET, CHAT and LIST are defined.")
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(dcc-ctcp-errmsg . "DCC: `%s' is not a DCC subcommand known to this client")
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(dcc-ctcp-unknown . "DCC: unknown dcc command `%q' from %n (%u@%h)")
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(dcc-get-bytes-received . "DCC: %f: %b bytes received")
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(dcc-get-complete
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. "DCC: file %f transfer complete (%s bytes in %t seconds)")
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(dcc-get-cmd-aborted . "DCC: Aborted getting %f from %n")
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(dcc-get-file-too-long
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. "DCC: %f: File longer than sender claimed; aborting transfer")
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(dcc-get-notfound . "DCC: %n hasn't offered %f for DCC transfer")
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(dcc-list-head . "DCC: From Type Active Size Filename")
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(dcc-list-line . "DCC: -------- ---- ------ ------------ --------")
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(dcc-list-item . "DCC: %-8n %-4t %-6a %-12s %f")
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(dcc-list-end . "DCC: End of list.")
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(dcc-malformed . "DCC: error: %n (%u@%h) sent malformed request: %q")
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(dcc-privileged-port
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. "DCC: possibly bogus request: %p is a privileged port.")
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(dcc-request-bogus . "DCC: bogus dcc `%r' from %n (%u@%h)")
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(dcc-send-finished . "DCC: SEND of %f to %n finished (size %s)")
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(dcc-send-offered . "DCC: file %f offered by %n (%u@%h) (size %s)")
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(dcc-send-offer . "DCC: offering %f to %n")))
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;;; Misc macros and utility functions
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(defun erc-dcc-member (&rest args)
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"Return the first matching entry in `erc-dcc-list' which satisfies the
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constraints given as a plist in ARGS. Returns nil on no match.
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The property :nick is treated specially, if it contains a '!' character,
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it is treated as a nick!user@host string, and compared with the :nick property
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value of the individual elements using string-equal. Otherwise it is
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compared with `erc-nick-equal-p' which is IRC case-insensitive."
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(let ((list erc-dcc-list)
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result test)
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;; for each element in erc-dcc-list
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(while (and list (not result))
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(let ((elt (car list))
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(prem args)
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(cont t))
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;; loop through the constraints
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(while (and prem cont)
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(let ((prop (car prem))
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(val (cadr prem)))
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(setq prem (cddr prem)
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;; plist-member is a predicate in xemacs
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test (and (plist-member elt prop)
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(plist-get elt prop)))
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;; if the property exists and is equal, we continue, else, try the
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;; next element of the list
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(or (and (eq prop :nick) (string-match "!" val)
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test (string-equal test val))
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(and (eq prop :nick)
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test val
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(erc-nick-equal-p
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(erc-extract-nick test)
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(erc-extract-nick val)))
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;; not a nick
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(eq test val)
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(setq cont nil))))
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(if cont
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(setq result elt)
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(setq list (cdr list)))))
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result))
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;; msa wrote this nifty little frob to convert an n-byte integer to a packed
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;; string.
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(defun erc-pack-int (value count)
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(if (> count 0)
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(concat (erc-pack-int (/ value 256) (1- count))
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(char-to-string (% value 256)))
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""))
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(defun erc-unpack-int (str)
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"Unpack a 1-4 character packed string into an integer."
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(let ((len (length str))
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(num 0)
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(count 0))
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(erc-assert (<= len 4)) ;; this isn't going to fit in elisp bounds
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(while (< count len)
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(setq num (+ num (lsh (aref str (- len count 1)) (* 8 count))))
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(setq count (1+ count)))
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num))
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(defconst erc-dcc-ipv4-regexp
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(concat "^"
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(mapconcat #'identity (make-list 4 "\\([0-9]\\{1,3\\}\\)") "\\.")
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"$"))
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(defun erc-ip-to-decimal (ip)
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"Convert IP address to its decimal representation.
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Argument IP is the address as a string. The result is also a string."
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(interactive "sIP Address: ")
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(if (not (string-match erc-dcc-ipv4-regexp ip))
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(error "Not an IP address")
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(let* ((ips (mapcar
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(lambda (str)
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(let ((n (string-to-number str)))
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(if (and (>= n 0) (< n 256))
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n
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(error "%d out of range" n))))
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(split-string ip "\\.")))
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(res (+ (* (car ips) 16777216.0)
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(* (nth 1 ips) 65536.0)
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(* (nth 2 ips) 256.0)
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(nth 3 ips))))
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(if (interactive-p)
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(message "%s is %.0f" ip res)
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(format "%.0f" res)))))
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(defun erc-decimal-to-ip (dec)
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"Convert a decimal representation DEC to an IP address.
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The result is also a string."
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(when (stringp dec)
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(setq dec (string-to-number (concat dec ".0"))))
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(let* ((first (floor (/ dec 16777216.0)))
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(first-rest (- dec (* first 16777216.0)))
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(second (floor (/ first-rest 65536.0)))
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(second-rest (- first-rest (* second 65536.0)))
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(third (floor (/ second-rest 256.0)))
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(third-rest (- second-rest (* third 256.0)))
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(fourth (floor third-rest)))
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(format "%s.%s.%s.%s" first second third fourth)))
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;;; Server code
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(defcustom erc-dcc-host nil
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"*IP address to use for outgoing DCC offers.
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Should be set to a string or nil, if nil, automatic detection of the
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host interface to use will be attempted."
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:group 'erc-dcc
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:type (list 'choice (list 'const :tag "Auto-detect" nil)
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(list 'string :tag "IP-address"
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:valid-regexp erc-dcc-ipv4-regexp)))
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(defcustom erc-dcc-send-request 'ask
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"*How to treat incoming DCC Send requests.
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'ask - Report the Send request, and wait for the user to manually accept it
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You might want to set `erc-dcc-auto-masks' for this.
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'auto - Automatically accept the request and begin downloading the file
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'ignore - Ignore incoming DCC Send requests completely."
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:group 'erc-dcc
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:type '(choice (const ask) (const auto) (const ignore)))
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(defun erc-dcc-get-host (proc)
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"Returns the local IP address used for an open PROCess."
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(format-network-address (process-contact proc :local) t))
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(defun erc-dcc-host ()
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"Determine the IP address we are using.
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If variable `erc-dcc-host' is non-nil, use it. Otherwise call
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`erc-dcc-get-host' on the erc-server-process."
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(or erc-dcc-host (erc-dcc-get-host erc-server-process)
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(error "Unable to determine local address")))
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(defcustom erc-dcc-port-range nil
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"If nil, any available user port is used for outgoing DCC connections.
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If set to a cons, it specifies a range of ports to use in the form (min . max)"
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:group 'erc-dcc
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:type '(choice
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(const :tag "Any port" nil)
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(cons :tag "Port range"
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(integer :tag "Lower port")
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(integer :tag "Upper port"))))
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(defcustom erc-dcc-auto-masks nil
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"List of regexps matching user identifiers whose DCC send offers should be
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accepted automatically. A user identifier has the form \"nick!login@host\".
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For instance, to accept all incoming DCC send offers automatically, add the
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string \".*!.*@.*\" to this list."
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:group 'erc-dcc
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:type '(repeat regexp))
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(defun erc-dcc-server (name filter sentinel)
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"Start listening on a port for an incoming DCC connection. Returns the newly
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created subprocess, or nil."
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(let ((port (or (and erc-dcc-port-range (car erc-dcc-port-range)) t))
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(upper (and erc-dcc-port-range (cdr erc-dcc-port-range)))
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process)
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(while (not process)
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(condition-case err
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(setq process
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(make-network-process :name name
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:buffer nil
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:host (erc-dcc-host)
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:service port
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:nowait t
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:noquery nil
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:filter filter
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:sentinel sentinel
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:log #'erc-dcc-server-accept
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:server t))
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(file-error
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(unless (and (string= "Cannot bind server socket" (cadr err))
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(string= "address already in use" (caddr err)))
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(signal (car err) (cdr err)))
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(setq port (1+ port))
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(unless (< port upper)
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(error "No available ports in erc-dcc-port-range")))))
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process))
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(defun erc-dcc-server-accept (server client message)
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"Log an accepted DCC offer, then terminate the listening process and set up
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the accepted connection."
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(erc-log (format "(erc-dcc-server-accept): server %s client %s message %s"
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server client message))
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(when (and (string-match "^accept from " message)
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(processp server) (processp client))
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(let ((elt (erc-dcc-member :peer server)))
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;; change the entry in erc-dcc-list from the listening process to the
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;; accepted process
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(setq elt (plist-put elt :peer client))
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;; delete the listening process, as we've accepted the connection
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(delete-process server))))
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;;; Interactive command handling
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(defcustom erc-dcc-get-default-directory nil
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"*Default directory for incoming DCC file transfers.
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If this is nil, then the current value of `default-directory' is used."
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:group 'erc-dcc
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:type '(choice (const nil :tag "Default directory") directory))
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;;;###autoload
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(defun erc-cmd-DCC (cmd &rest args)
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"Parser for /dcc command.
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This figures out the dcc subcommand and calls the appropriate routine to
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handle it. The function dispatched should be named \"erc-dcc-do-FOO-command\",
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where FOO is one of CLOSE, GET, SEND, LIST, CHAT, etc."
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(when cmd
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(let ((fn (intern-soft (concat "erc-dcc-do-" (upcase cmd) "-command"))))
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(if fn
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(apply fn erc-server-process args)
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(erc-display-message
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nil 'notice 'active
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'dcc-command-undefined ?c cmd)
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(apropos "erc-dcc-do-.*-command")
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t))))
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;;;###autoload
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(defun pcomplete/erc-mode/DCC ()
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"Provides completion for the /DCC command."
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(pcomplete-here (append '("chat" "close" "get" "list")
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(when (fboundp 'make-network-process) '("send"))))
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(pcomplete-here
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(case (intern (downcase (pcomplete-arg 1)))
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(chat (mapcar (lambda (elt) (plist-get elt :nick))
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(erc-remove-if-not
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#'(lambda (elt)
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(eq (plist-get elt :type) 'CHAT))
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erc-dcc-list)))
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(close (remove-duplicates
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(mapcar (lambda (elt) (symbol-name (plist-get elt :type)))
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erc-dcc-list) :test 'string=))
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(get (mapcar #'erc-dcc-nick
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(erc-remove-if-not
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#'(lambda (elt)
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(eq (plist-get elt :type) 'GET))
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erc-dcc-list)))
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(send (pcomplete-erc-all-nicks))))
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(pcomplete-here
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(case (intern (downcase (pcomplete-arg 2)))
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(get (mapcar (lambda (elt) (plist-get elt :file))
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(erc-remove-if-not
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#'(lambda (elt)
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(and (eq (plist-get elt :type) 'GET)
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(erc-nick-equal-p (erc-extract-nick
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(plist-get elt :nick))
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(pcomplete-arg 1))))
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erc-dcc-list)))
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(close (mapcar #'erc-dcc-nick
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(erc-remove-if-not
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#'(lambda (elt)
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(eq (plist-get elt :type)
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(intern (upcase (pcomplete-arg 1)))))
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erc-dcc-list)))
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(send (pcomplete-entries)))))
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(defun erc-dcc-do-CHAT-command (proc &optional nick)
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(when nick
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(let ((elt (erc-dcc-member :nick nick :type 'CHAT :parent proc)))
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(if (and elt (not (processp (plist-get elt :peer))))
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;; accept an existing chat offer
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;; FIXME: perhaps /dcc accept like other clients?
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(progn (erc-dcc-chat-accept elt erc-server-process)
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(erc-display-message
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nil 'notice 'active
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'dcc-chat-accept ?n nick)
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t)
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(erc-dcc-chat nick erc-server-process)
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(erc-display-message
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nil 'notice 'active
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'dcc-chat-offer ?n nick)
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t))))
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(defun erc-dcc-do-CLOSE-command (proc &optional type nick)
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"/dcc close type nick
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type and nick are optional."
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;; FIXME, should also work if only nick is specified
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(when (string-match (concat "^\\s-*\\(\\S-+\\)? *\\("
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erc-valid-nick-regexp "\\)?\\s-*$") line)
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(let ((type (when (match-string 1 line)
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(intern (upcase (match-string 1 line)))))
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(nick (match-string 2 line))
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(ret t))
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(while ret
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(if nick
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(setq ret (erc-dcc-member :type type :nick nick))
|
|
(setq ret (erc-dcc-member :type type)))
|
|
(when ret
|
|
;; found a match - delete process if it exists.
|
|
(and (processp (plist-get ret :peer))
|
|
(delete-process (plist-get ret :peer)))
|
|
(setq erc-dcc-list (delq ret erc-dcc-list))
|
|
(erc-display-message
|
|
nil 'notice 'active
|
|
'dcc-closed
|
|
?T (plist-get ret :type)
|
|
?n (erc-extract-nick (plist-get ret :nick))))))
|
|
t))
|
|
|
|
(defun erc-dcc-do-GET-command (proc nick &optional file)
|
|
(let* ((elt (erc-dcc-member :nick nick :type 'GET))
|
|
(filename (or file (plist-get elt :file) "unknown")))
|
|
(if elt
|
|
(let* ((file (read-file-name
|
|
(format "Local filename (default %s): "
|
|
(file-name-nondirectory filename))
|
|
(or erc-dcc-get-default-directory
|
|
default-directory)
|
|
(expand-file-name (file-name-nondirectory filename)
|
|
(or erc-dcc-get-default-directory
|
|
default-directory)))))
|
|
(cond ((file-exists-p file)
|
|
(if (yes-or-no-p (format "File %s exists. Overwrite? "
|
|
file))
|
|
(erc-dcc-get-file elt file proc)
|
|
(erc-display-message
|
|
nil '(notice error) proc
|
|
'dcc-get-cmd-aborted
|
|
?n nick ?f filename)))
|
|
(t
|
|
(erc-dcc-get-file elt file proc))))
|
|
(erc-display-message
|
|
nil '(notice error) 'active
|
|
'dcc-get-notfound ?n nick ?f filename))))
|
|
|
|
(defun erc-dcc-do-LIST-command (proc)
|
|
"This is the handler for the /dcc list command.
|
|
It lists the current state of `erc-dcc-list' in an easy to read manner."
|
|
(let ((alist erc-dcc-list)
|
|
size elt)
|
|
(erc-display-message
|
|
nil 'notice 'active
|
|
'dcc-list-head)
|
|
(erc-display-message
|
|
nil 'notice 'active
|
|
'dcc-list-line)
|
|
(while alist
|
|
(setq elt (car alist)
|
|
alist (cdr alist))
|
|
|
|
(setq size (or (and (plist-member elt :size)
|
|
(plist-get elt :size))
|
|
""))
|
|
(setq size
|
|
(cond ((null size) "")
|
|
((numberp size) (number-to-string size))
|
|
((string= size "") "unknown")))
|
|
(erc-display-message
|
|
nil 'notice 'active
|
|
'dcc-list-item
|
|
?n (erc-dcc-nick elt)
|
|
?t (plist-get elt :type)
|
|
?a (if (processp (plist-get elt :peer))
|
|
(process-status (plist-get elt :peer))
|
|
"no")
|
|
?s (concat size
|
|
(if (and (eq 'GET (plist-get elt :type))
|
|
(plist-member elt :file)
|
|
(buffer-live-p (get-buffer (plist-get elt :file)))
|
|
(plist-member elt :size))
|
|
(concat " (" (number-to-string
|
|
(* 100
|
|
(/ (buffer-size
|
|
(get-buffer (plist-get elt :file)))
|
|
(plist-get elt :size))))
|
|
"%)")))
|
|
?f (or (and (plist-member elt :file) (plist-get elt :file)) "")))
|
|
(erc-display-message
|
|
nil 'notice 'active
|
|
'dcc-list-end)
|
|
t))
|
|
|
|
(defun erc-dcc-do-SEND-command (proc nick file)
|
|
"Offer FILE to NICK by sending a ctcp dcc send message."
|
|
(if (file-exists-p file)
|
|
(progn
|
|
(erc-display-message
|
|
nil 'notice 'active
|
|
'dcc-send-offer ?n nick ?f file)
|
|
(erc-dcc-send-file nick file) t)
|
|
(erc-display-message nil '(notice error) proc "File not found") t))
|
|
|
|
;;; Server message handling (i.e. messages from remote users)
|
|
|
|
;;;###autoload
|
|
(defvar erc-ctcp-query-DCC-hook '(erc-ctcp-query-DCC)
|
|
"Hook variable for CTCP DCC queries")
|
|
|
|
(defvar erc-dcc-query-handler-alist
|
|
'(("SEND" . erc-dcc-handle-ctcp-send)
|
|
("CHAT" . erc-dcc-handle-ctcp-chat)))
|
|
|
|
;;;###autoload
|
|
(defun erc-ctcp-query-DCC (proc nick login host to query)
|
|
"The function called when a CTCP DCC request is detected by the client.
|
|
It examines the DCC subcommand, and calls the appropriate routine for
|
|
that subcommand."
|
|
(let* ((cmd (cadr (split-string query " ")))
|
|
(handler (cdr (assoc cmd erc-dcc-query-handler-alist))))
|
|
(if handler
|
|
(funcall handler proc query nick login host to)
|
|
;; FIXME: Send a ctcp error notice to the remote end?
|
|
(erc-display-message
|
|
nil '(notice error) proc
|
|
'dcc-ctcp-unknown
|
|
?q query ?n nick ?u login ?h host))))
|
|
|
|
(defconst erc-dcc-ctcp-query-send-regexp
|
|
"^DCC SEND \\([^ ]+\\) \\([0-9]+\\) \\([0-9]+\\) *\\([0-9]*\\)")
|
|
|
|
(defun erc-dcc-handle-ctcp-send (proc query nick login host to)
|
|
"This is called if a CTCP DCC SEND subcommand is sent to the client.
|
|
It extracts the information about the dcc request and adds it to
|
|
`erc-dcc-list'."
|
|
(unless (eq erc-dcc-send-request 'ignore)
|
|
(cond
|
|
((not (erc-current-nick-p to))
|
|
;; DCC SEND requests must be sent to you, and you alone.
|
|
(erc-display-message
|
|
nil 'notice proc
|
|
'dcc-request-bogus
|
|
?r "SEND" ?n nick ?u login ?h host))
|
|
((string-match erc-dcc-ctcp-query-send-regexp query)
|
|
(let ((filename (match-string 1 query))
|
|
(ip (erc-decimal-to-ip (match-string 2 query)))
|
|
(port (match-string 3 query))
|
|
(size (match-string 4 query)))
|
|
;; FIXME: a warning really should also be sent
|
|
;; if the ip address != the host the dcc sender is on.
|
|
(erc-display-message
|
|
nil 'notice proc
|
|
'dcc-send-offered
|
|
?f filename ?n nick ?u login ?h host
|
|
?s (if (string= size "") "unknown" size))
|
|
(and (< (string-to-number port) 1025)
|
|
(erc-display-message
|
|
nil 'notice proc
|
|
'dcc-privileged-port
|
|
?p port))
|
|
(erc-dcc-list-add
|
|
'GET (format "%s!%s@%s" nick login host)
|
|
nil proc
|
|
:ip ip :port port :file filename
|
|
:size (string-to-number size))
|
|
(if (and (eq erc-dcc-send-request 'auto)
|
|
(erc-dcc-auto-mask-p (format "\"%s!%s@%s\"" nick login host)))
|
|
(erc-dcc-get-file (car erc-dcc-list) filename proc))))
|
|
(t
|
|
(erc-display-message
|
|
nil 'notice proc
|
|
'dcc-malformed
|
|
?n nick ?u login ?h host ?q query)))))
|
|
|
|
(defun erc-dcc-auto-mask-p (spec)
|
|
"Takes a full SPEC of a user in the form \"nick!login@host\" and
|
|
matches against all the regexp's in `erc-dcc-auto-masks'. If any
|
|
match, returns that regexp and nil otherwise."
|
|
(let ((lst erc-dcc-auto-masks))
|
|
(while (and lst
|
|
(not (string-match (car lst) spec)))
|
|
(setq lst (cdr lst)))
|
|
(and lst (car lst))))
|
|
|
|
(defconst erc-dcc-ctcp-query-chat-regexp
|
|
"^DCC CHAT +chat +\\([0-9]+\\) +\\([0-9]+\\)")
|
|
|
|
(defcustom erc-dcc-chat-request 'ask
|
|
"*How to treat incoming DCC Chat requests.
|
|
'ask - Report the Chat request, and wait for the user to manually accept it
|
|
'auto - Automatically accept the request and open a new chat window
|
|
'ignore - Ignore incoming DCC chat requests completely."
|
|
:group 'erc-dcc
|
|
:type '(choice (const ask) (const auto) (const ignore)))
|
|
|
|
(defun erc-dcc-handle-ctcp-chat (proc query nick login host to)
|
|
(unless (eq erc-dcc-chat-request 'ignore)
|
|
(cond
|
|
(;; DCC CHAT requests must be sent to you, and you alone.
|
|
(not (erc-current-nick-p to))
|
|
(erc-display-message
|
|
nil '(notice error) proc
|
|
'dcc-request-bogus ?r "CHAT" ?n nick ?u login ?h host))
|
|
((string-match erc-dcc-ctcp-query-chat-regexp query)
|
|
;; We need to use let* here, since erc-dcc-member might clutter
|
|
;; the match value.
|
|
(let* ((ip (erc-decimal-to-ip (match-string 1 query)))
|
|
(port (match-string 2 query))
|
|
(elt (erc-dcc-member :nick nick :type 'CHAT)))
|
|
;; FIXME: A warning really should also be sent if the ip
|
|
;; address != the host the dcc sender is on.
|
|
(erc-display-message
|
|
nil 'notice proc
|
|
'dcc-chat-offered
|
|
?n nick ?u login ?h host ?p port)
|
|
(and (< (string-to-number port) 1025)
|
|
(erc-display-message
|
|
nil 'notice proc
|
|
'dcc-privileged-port ?p port))
|
|
(cond (elt
|
|
;; XXX: why are we updating ip/port on the existing connection?
|
|
(setq elt (plist-put (plist-put elt :port port) :ip ip))
|
|
(erc-display-message
|
|
nil 'notice proc
|
|
'dcc-chat-discarded ?n nick ?u login ?h host))
|
|
(t
|
|
(erc-dcc-list-add
|
|
'CHAT (format "%s!%s@%s" nick login host)
|
|
nil proc
|
|
:ip ip :port port)))
|
|
(if (eq erc-dcc-chat-request 'auto)
|
|
(erc-dcc-chat-accept (erc-dcc-member :nick nick :type 'CHAT)
|
|
proc))))
|
|
(t
|
|
(erc-display-message
|
|
nil '(notice error) proc
|
|
'dcc-malformed ?n nick ?u login ?h host ?q query)))))
|
|
|
|
|
|
(defvar erc-dcc-entry-data nil
|
|
"Holds the `erc-dcc-list' entry for this DCC connection.")
|
|
(make-variable-buffer-local 'erc-dcc-entry-data)
|
|
|
|
;;; SEND handling
|
|
|
|
(defcustom erc-dcc-block-size 1024
|
|
"*Block size to use for DCC SEND sessions."
|
|
:group 'erc-dcc
|
|
:type 'integer)
|
|
|
|
(defcustom erc-dcc-pump-bytes nil
|
|
"*If set to an integer, keep sending until that number of bytes are
|
|
unconfirmed."
|
|
:group 'erc-dcc
|
|
:type '(choice (const nil) integer))
|
|
|
|
(defsubst erc-dcc-get-parent (proc)
|
|
(plist-get (erc-dcc-member :peer proc) :parent))
|
|
|
|
(defun erc-dcc-send-block (proc)
|
|
"Send one block of data.
|
|
PROC is the process-object of the DCC connection. Returns the number of
|
|
bytes sent."
|
|
(let* ((elt (erc-dcc-member :peer proc))
|
|
(confirmed-marker (plist-get elt :sent))
|
|
(sent-marker (plist-get elt :sent)))
|
|
(with-current-buffer (process-buffer proc)
|
|
(when erc-verbose-dcc
|
|
(erc-display-message
|
|
nil 'notice (erc-dcc-get-parent proc)
|
|
(format "DCC: Confirmed %d, sent %d, sending block now"
|
|
(- confirmed-marker (point-min))
|
|
(- sent-marker (point-min)))))
|
|
(let* ((end (min (+ sent-marker erc-dcc-block-size)
|
|
(point-max)))
|
|
(string (buffer-substring-no-properties sent-marker end)))
|
|
(when (< sent-marker end)
|
|
(set-marker sent-marker end)
|
|
(process-send-string proc string))
|
|
(length string)))))
|
|
|
|
(defun erc-dcc-send-filter (proc string)
|
|
(erc-assert (= (% (length string) 4) 0))
|
|
(let* ((size (erc-unpack-int (substring string (- (length string) 4))))
|
|
(elt (erc-dcc-member :peer proc))
|
|
(parent (plist-get elt :parent))
|
|
(sent-marker (plist-get elt :sent))
|
|
(confirmed-marker (plist-get elt :confirmed)))
|
|
(with-current-buffer (process-buffer proc)
|
|
(set-marker confirmed-marker (+ (point-min) size))
|
|
(cond
|
|
((and (= confirmed-marker sent-marker)
|
|
(= confirmed-marker (point-max)))
|
|
(erc-display-message
|
|
nil 'notice parent
|
|
'dcc-send-finished
|
|
?n (plist-get elt :nick)
|
|
?f buffer-file-name
|
|
?s (number-to-string (- sent-marker (point-min))))
|
|
(setq erc-dcc-list (delete elt erc-dcc-list))
|
|
(set-buffer-modified-p nil)
|
|
(kill-buffer (current-buffer))
|
|
(delete-process proc))
|
|
((<= confirmed-marker sent-marker)
|
|
(while (and (< (- sent-marker confirmed-marker)
|
|
(or erc-dcc-pump-bytes
|
|
erc-dcc-block-size))
|
|
(> (erc-dcc-send-block proc) 0))))
|
|
((> confirmed-marker sent-marker)
|
|
(erc-display-message
|
|
nil 'notice parent
|
|
(format "DCC: Client confirmed too much!"))
|
|
(delete-process proc))))))
|
|
|
|
(defcustom erc-dcc-send-connect-hook
|
|
'((lambda (proc)
|
|
(erc-display-message
|
|
nil 'notice (erc-dcc-get-parent proc)
|
|
(format "DCC: SEND connect from %s"
|
|
(format-network-address (process-contact proc :remote)))))
|
|
erc-dcc-send-block)
|
|
"*Hook run whenever the remote end of a DCC SEND offer connected to your
|
|
listening port."
|
|
:group 'erc-dcc
|
|
:type 'hook)
|
|
|
|
(defun erc-dcc-nick (plist)
|
|
"Extract the nickname portion of the :nick property value in PLIST."
|
|
(erc-extract-nick (plist-get plist :nick)))
|
|
|
|
(defun erc-dcc-send-sentinel (proc event)
|
|
(let* ((elt (erc-dcc-member :peer proc))
|
|
(buf (marker-buffer (plist-get elt :sent))))
|
|
(cond
|
|
((string-match "^open from " event)
|
|
(when elt
|
|
(with-current-buffer buf
|
|
(set-process-buffer proc buf)
|
|
(setq erc-dcc-entry-data elt))
|
|
(run-hook-with-args 'erc-dcc-send-connect-hook proc))))))
|
|
|
|
(defun erc-dcc-find-file (file)
|
|
(with-current-buffer (generate-new-buffer (file-name-nondirectory file))
|
|
(insert-file-contents-literally file)
|
|
(setq buffer-file-name file)
|
|
(current-buffer)))
|
|
|
|
(defun erc-dcc-file-to-name (file)
|
|
(with-temp-buffer
|
|
(insert (file-name-nondirectory file))
|
|
(subst-char-in-region (point-min) (point-max) ? ?_ t)
|
|
(buffer-string)))
|
|
|
|
(defun erc-dcc-send-file (nick file &optional pproc)
|
|
"Open a socket for incoming connections, and send a CTCP send request to the
|
|
other client."
|
|
(interactive "sNick: \nfFile: ")
|
|
(when (null pproc) (if (processp erc-server-process)
|
|
(setq pproc erc-server-process)
|
|
(error "Can not find parent process")))
|
|
(if (featurep 'make-network-process)
|
|
(let* ((buffer (erc-dcc-find-file file))
|
|
(size (buffer-size buffer))
|
|
(start (with-current-buffer buffer
|
|
(set-marker (make-marker) (point-min))))
|
|
(sproc (erc-dcc-server "dcc-send"
|
|
'erc-dcc-send-filter
|
|
'erc-dcc-send-sentinel))
|
|
(contact (process-contact sproc)))
|
|
(erc-dcc-list-add
|
|
'SEND nick sproc pproc
|
|
:file file :size size
|
|
:sent start :confirmed (copy-marker start))
|
|
(process-send-string
|
|
pproc (format "PRIVMSG %s :\C-aDCC SEND %s %s %d %d\C-a\n"
|
|
nick (erc-dcc-file-to-name file)
|
|
(erc-ip-to-decimal (nth 0 contact))
|
|
(nth 1 contact)
|
|
size)))
|
|
(error "`make-network-process' not supported by your emacs.")))
|
|
|
|
;;; GET handling
|
|
|
|
(defvar erc-dcc-byte-count nil)
|
|
(make-variable-buffer-local 'erc-dcc-byte-count)
|
|
|
|
(defun erc-dcc-get-file (entry file parent-proc)
|
|
"This function does the work of setting up a transfer from the remote client
|
|
to the local one over a tcp connection. This involves setting up a process
|
|
filter and a process sentinel, and making the connection."
|
|
(let* ((buffer (generate-new-buffer (file-name-nondirectory file)))
|
|
proc)
|
|
(with-current-buffer buffer
|
|
(fundamental-mode)
|
|
;; This is necessary to have the buffer saved as-is in GNU
|
|
;; Emacs.
|
|
;; XEmacs change: We don't have `set-buffer-multibyte', setting
|
|
;; coding system to 'binary below takes care of us.
|
|
(when (fboundp 'set-buffer-multibyte)
|
|
(set-buffer-multibyte nil))
|
|
|
|
(setq mode-line-process '(":%s")
|
|
buffer-file-type t
|
|
buffer-read-only t)
|
|
(set-visited-file-name file)
|
|
|
|
(setq erc-server-process parent-proc
|
|
erc-dcc-entry-data entry)
|
|
(setq erc-dcc-byte-count 0)
|
|
(setq proc
|
|
(funcall erc-dcc-connect-function
|
|
"dcc-get" buffer
|
|
(plist-get entry :ip)
|
|
(string-to-number (plist-get entry :port))
|
|
entry))
|
|
(set-process-buffer proc buffer)
|
|
;; The following two lines make saving as-is work under Windows
|
|
(set-process-coding-system proc 'binary 'binary)
|
|
(set-buffer-file-coding-system 'binary t)
|
|
|
|
(set-process-filter proc 'erc-dcc-get-filter)
|
|
(set-process-sentinel proc 'erc-dcc-get-sentinel)
|
|
(setq entry (plist-put entry :start-time (erc-current-time)))
|
|
(setq entry (plist-put entry :peer proc)))))
|
|
|
|
(defun erc-dcc-get-filter (proc str)
|
|
"This is the process filter for transfers from other clients to this one.
|
|
It reads incoming bytes from the network and stores them in the DCC
|
|
buffer, and sends back the replies after each block of data per the DCC
|
|
protocol spec. Well not really. We write back a reply after each read,
|
|
rather than every 1024 byte block, but nobody seems to care."
|
|
(with-current-buffer (process-buffer proc)
|
|
(setq buffer-read-only nil) ;; FIXME
|
|
(goto-char (point-max))
|
|
(insert (string-make-unibyte str))
|
|
|
|
(setq erc-dcc-byte-count (+ (length str) erc-dcc-byte-count))
|
|
(erc-assert (= erc-dcc-byte-count (1- (point-max))))
|
|
(and erc-verbose-dcc
|
|
(erc-display-message
|
|
nil 'notice erc-server-process
|
|
'dcc-get-bytes-received
|
|
?f (file-name-nondirectory buffer-file-name)
|
|
?b (number-to-string erc-dcc-byte-count)))
|
|
(cond
|
|
((and (> (plist-get erc-dcc-entry-data :size) 0)
|
|
(> erc-dcc-byte-count (plist-get erc-dcc-entry-data :size)))
|
|
(erc-display-message
|
|
nil '(error notice) 'active
|
|
'dcc-get-file-too-long
|
|
?f (file-name-nondirectory buffer-file-name))
|
|
(delete-process proc))
|
|
(t
|
|
(process-send-string
|
|
proc (erc-pack-int erc-dcc-byte-count 4))))))
|
|
|
|
|
|
(defun erc-dcc-get-sentinel (proc event)
|
|
"This is the process sentinel for CTCP DCC SEND connections.
|
|
It shuts down the connection and notifies the user that the
|
|
transfer is complete."
|
|
;; FIXME, we should look at EVENT, and also check size.
|
|
(with-current-buffer (process-buffer proc)
|
|
(delete-process proc)
|
|
(setq buffer-read-only nil)
|
|
(setq erc-dcc-list (delete erc-dcc-entry-data erc-dcc-list))
|
|
(erc-display-message
|
|
nil 'notice erc-server-process
|
|
'dcc-get-complete
|
|
?f (file-name-nondirectory buffer-file-name)
|
|
?s (number-to-string (buffer-size))
|
|
?t (format "%.0f"
|
|
(erc-time-diff (plist-get erc-dcc-entry-data :start-time)
|
|
(erc-current-time))))
|
|
(save-buffer))
|
|
(kill-buffer (process-buffer proc))
|
|
(delete-process proc))
|
|
|
|
;;; CHAT handling
|
|
|
|
(defcustom erc-dcc-chat-buffer-name-format "DCC-CHAT-%s"
|
|
"*Format to use for DCC Chat buffer names."
|
|
:group 'erc-dcc
|
|
:type 'string)
|
|
|
|
(defcustom erc-dcc-chat-mode-hook nil
|
|
"*Hook calls when `erc-dcc-chat-mode' finished setting up the buffer."
|
|
:group 'erc-dcc
|
|
:type 'hook)
|
|
|
|
(defcustom erc-dcc-chat-connect-hook nil
|
|
""
|
|
:group 'erc-dcc
|
|
:type 'hook)
|
|
|
|
(defcustom erc-dcc-chat-exit-hook nil
|
|
""
|
|
:group 'erc-dcc
|
|
:type 'hook)
|
|
|
|
(defun erc-cmd-CREQ (line &optional force)
|
|
"Set or get the DCC chat request flag.
|
|
Possible values are: ask, auto, ignore."
|
|
(when (string-match "^\\s-*\\(auto\\|ask\\|ignore\\)?$" line)
|
|
(let ((cmd (match-string 1 line)))
|
|
(if (stringp cmd)
|
|
(erc-display-message
|
|
nil 'notice 'active
|
|
(format "Set DCC Chat requests to %S"
|
|
(setq erc-dcc-chat-request (intern cmd))))
|
|
(erc-display-message nil 'notice 'active
|
|
(format "DCC Chat requests are set to %S"
|
|
erc-dcc-chat-request)))
|
|
t)))
|
|
|
|
(defun erc-cmd-SREQ (line &optional force)
|
|
"Set or get the DCC send request flag.
|
|
Possible values are: ask, auto, ignore."
|
|
(when (string-match "^\\s-*\\(auto\\|ask\\|ignore\\)?$" line)
|
|
(let ((cmd (match-string 1 line)))
|
|
(if (stringp cmd)
|
|
(erc-display-message
|
|
nil 'notice 'active
|
|
(format "Set DCC Send requests to %S"
|
|
(setq erc-dcc-send-request (intern cmd))))
|
|
(erc-display-message nil 'notice 'active
|
|
(format "DCC Send requests are set to %S"
|
|
erc-dcc-send-request)))
|
|
t)))
|
|
|
|
(defun pcomplete/erc-mode/CREQ ()
|
|
(pcomplete-here '("auto" "ask" "ignore")))
|
|
(defalias 'pcomplete/erc-mode/SREQ 'pcomplete/erc-mode/CREQ)
|
|
|
|
(defvar erc-dcc-chat-filter-hook '(erc-dcc-chat-parse-output)
|
|
"*Hook to run after doing parsing (and possible insertion) of DCC messages.")
|
|
|
|
(defvar erc-dcc-chat-mode-map
|
|
(let ((map (make-sparse-keymap)))
|
|
(define-key map (kbd "RET") 'erc-send-current-line)
|
|
(define-key map "\t" 'erc-complete-word)
|
|
map)
|
|
"Keymap for `erc-dcc-mode'.")
|
|
|
|
(defun erc-dcc-chat-mode ()
|
|
"Major mode for wasting time via DCC chat."
|
|
(interactive)
|
|
(kill-all-local-variables)
|
|
(setq mode-line-process '(":%s")
|
|
mode-name "DCC-Chat"
|
|
major-mode 'erc-dcc-chat-mode
|
|
erc-send-input-line-function 'erc-dcc-chat-send-input-line
|
|
erc-default-recipients '(dcc))
|
|
(use-local-map erc-dcc-chat-mode-map)
|
|
(run-hooks 'erc-dcc-chat-mode-hook))
|
|
|
|
(defun erc-dcc-chat-send-input-line (recipient line &optional force)
|
|
"Send LINE to the remote end.
|
|
Argument RECIPIENT should always be the symbol dcc, and force
|
|
is ignored."
|
|
;; FIXME: We need to get rid of all force arguments one day!
|
|
(if (eq recipient 'dcc)
|
|
(process-send-string
|
|
(get-buffer-process (current-buffer)) line)
|
|
(error "erc-dcc-chat-send-input-line in %s" (current-buffer))))
|
|
|
|
(defun erc-dcc-chat (nick &optional pproc)
|
|
"Open a socket for incoming connections, and send a chat request to the
|
|
other client."
|
|
(interactive "sNick: ")
|
|
(when (null pproc) (if (processp erc-server-process)
|
|
(setq pproc erc-server-process)
|
|
(error "Can not find parent process")))
|
|
(let* ((sproc (erc-dcc-server "dcc-chat-out"
|
|
'erc-dcc-chat-filter
|
|
'erc-dcc-chat-sentinel))
|
|
(contact (process-contact sproc)))
|
|
(erc-dcc-list-add 'OCHAT nick sproc pproc)
|
|
(process-send-string pproc
|
|
(format "PRIVMSG %s :\C-aDCC CHAT chat %s %d\C-a\n"
|
|
nick
|
|
(erc-ip-to-decimal (nth 0 contact)) (nth 1 contact)))))
|
|
|
|
(defvar erc-dcc-from)
|
|
(make-variable-buffer-local 'erc-dcc-from)
|
|
|
|
(defvar erc-dcc-unprocessed-output)
|
|
(make-variable-buffer-local 'erc-dcc-unprocessed-output)
|
|
|
|
(defun erc-dcc-chat-setup (entry)
|
|
"Setup a DCC chat buffer, returning the buffer."
|
|
(let* ((nick (erc-extract-nick (plist-get entry :nick)))
|
|
(buffer (generate-new-buffer
|
|
(format erc-dcc-chat-buffer-name-format nick)))
|
|
(proc (plist-get entry :peer))
|
|
(parent-proc (plist-get entry :parent)))
|
|
(erc-setup-buffer buffer)
|
|
;; buffer is now the current buffer.
|
|
(erc-dcc-chat-mode)
|
|
(setq erc-server-process parent-proc)
|
|
(setq erc-dcc-from nick)
|
|
(setq erc-dcc-entry-data entry)
|
|
(setq erc-dcc-unprocessed-output "")
|
|
(setq erc-insert-marker (set-marker (make-marker) (point-max)))
|
|
(erc-display-prompt buffer (point-max))
|
|
(set-process-buffer proc buffer)
|
|
(add-hook 'kill-buffer-hook 'erc-dcc-chat-buffer-killed nil t)
|
|
(run-hook-with-args 'erc-dcc-chat-connect-hook proc)
|
|
buffer))
|
|
|
|
(defun erc-dcc-chat-accept (entry parent-proc)
|
|
"Accept an incoming DCC connection and open a DCC window"
|
|
(let* ((nick (erc-extract-nick (plist-get entry :nick)))
|
|
buffer proc)
|
|
(setq proc
|
|
(funcall erc-dcc-connect-function
|
|
"dcc-chat" nil
|
|
(plist-get entry :ip)
|
|
(string-to-number (plist-get entry :port))
|
|
entry))
|
|
;; XXX: connected, should we kill the ip/port properties?
|
|
(setq entry (plist-put entry :peer proc))
|
|
(setq entry (plist-put entry :parent parent-proc))
|
|
(set-process-filter proc 'erc-dcc-chat-filter)
|
|
(set-process-sentinel proc 'erc-dcc-chat-sentinel)
|
|
(setq buffer (erc-dcc-chat-setup entry))))
|
|
|
|
(defun erc-dcc-chat-filter (proc str)
|
|
(let ((orig-buffer (current-buffer)))
|
|
(unwind-protect
|
|
(progn
|
|
(set-buffer (process-buffer proc))
|
|
(setq erc-dcc-unprocessed-output
|
|
(concat erc-dcc-unprocessed-output str))
|
|
(run-hook-with-args 'erc-dcc-chat-filter-hook proc
|
|
erc-dcc-unprocessed-output))
|
|
(set-buffer orig-buffer))))
|
|
|
|
(defun erc-dcc-chat-parse-output (proc str)
|
|
(save-match-data
|
|
(let ((posn 0)
|
|
line)
|
|
(while (string-match "\n" str posn)
|
|
(setq line (substring str posn (match-beginning 0)))
|
|
(setq posn (match-end 0))
|
|
(erc-display-message
|
|
nil nil proc
|
|
'dcc-chat-privmsg ?n (erc-propertize erc-dcc-from 'face
|
|
'erc-nick-default-face) ?m line))
|
|
(setq erc-dcc-unprocessed-output (substring str posn)))))
|
|
|
|
(defun erc-dcc-chat-buffer-killed ()
|
|
(erc-dcc-chat-close "killed buffer"))
|
|
|
|
(defun erc-dcc-chat-close (&optional event)
|
|
"Close a DCC chat, removing any associated processes and tidying up
|
|
`erc-dcc-list'"
|
|
(let ((proc (plist-get erc-dcc-entry-data :peer))
|
|
(evt (or event "")))
|
|
(when proc
|
|
(setq erc-dcc-list (delq erc-dcc-entry-data erc-dcc-list))
|
|
(run-hook-with-args 'erc-dcc-chat-exit-hook proc)
|
|
(delete-process proc)
|
|
(erc-display-message
|
|
nil 'notice erc-server-process
|
|
'dcc-chat-ended ?n erc-dcc-from ?t (current-time-string) ?e evt)
|
|
(setq erc-dcc-entry-data (plist-put erc-dcc-entry-data :peer nil)))))
|
|
|
|
(defun erc-dcc-chat-sentinel (proc event)
|
|
(let ((buf (current-buffer))
|
|
(elt (erc-dcc-member :peer proc)))
|
|
;; the sentinel is also notified when the connection is opened, so don't
|
|
;; immediately kill it again
|
|
;(message "buf %s elt %S evt %S" buf elt event)
|
|
(unwind-protect
|
|
(if (string-match "^open from" event)
|
|
(erc-dcc-chat-setup elt)
|
|
(erc-dcc-chat-close event))
|
|
(set-buffer buf))))
|
|
|
|
(defun erc-dcc-no-such-nick (proc parsed)
|
|
"Detect and handle no-such-nick replies from the IRC server."
|
|
(let* ((elt (erc-dcc-member :nick (second (erc-response.command-args parsed))
|
|
:parent proc))
|
|
(peer (plist-get elt :peer)))
|
|
(when (or (and (processp peer) (not (eq (process-status peer) 'open)))
|
|
elt)
|
|
;; Since we already created an entry before sending the CTCP
|
|
;; message, we now remove it, if it doesn't point to a process
|
|
;; which is already open.
|
|
(setq erc-dcc-list (delq elt erc-dcc-list))
|
|
(if (processp peer) (delete-process peer)))
|
|
nil))
|
|
|
|
(add-hook 'erc-server-401-functions 'erc-dcc-no-such-nick)
|
|
|
|
(provide 'erc-dcc)
|
|
|
|
;;; erc-dcc.el ends here
|
|
;;
|
|
;; Local Variables:
|
|
;; indent-tabs-mode: nil
|
|
;; End:
|
|
|
|
;; arch-tag: cda5a6b3-c510-4dbe-b699-84cccfa04edb
|