--- /dev/null
+;;; riece-ndcc.el --- DCC file sending protocol support (written in elisp) -*- lexical-binding: t -*-
+;; Copyright (C) 1998-2003 Daiki Ueno
+
+;; Author: Daiki Ueno <ueno@unixuser.org>
+;; Keywords: IRC, riece
+
+;; This file is part of Riece.
+
+;; This program is free software; you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation; either version 2, or (at your option)
+;; any later version.
+
+;; This program is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+;; GNU General Public License for more details.
+
+;; You should have received a copy of the GNU General Public License
+;; along with GNU Emacs; see the file COPYING. If not, write to the
+;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+;; Boston, MA 02110-1301, USA.
+
+;;; Commentary:
+
+;; NOTE: This is an add-on module for Riece.
+
+;;; Code:
+
+(require 'riece-globals)
+(require 'riece-options)
+
+(defgroup riece-ndcc nil
+ "DCC written in elisp."
+ :prefix "riece-"
+ :group 'riece)
+
+(defcustom riece-ndcc-server-address "127.0.0.1"
+ "Local address of the DCC server.
+Only used for sending files."
+ :type 'vector
+ :group 'riece-ndcc)
+
+(defvar riece-ndcc-requests nil)
+
+(defvar riece-ndcc-request-user nil)
+(defvar riece-ndcc-request-size nil)
+
+(defconst riece-ndcc-description
+ "DCC file sending protocol support (written in elisp.)")
+
+(defun riece-ndcc-encode-address (address)
+ (unless (string-match
+ "^\\([0-9]+\\)\\.\\([0-9]+\\)\\.\\([0-9]+\\)\\.\\([0-9]+\\)$"
+ address)
+ (error "% is not an IP address" address))
+ (let ((string (number-to-string
+ (+ (* (float (string-to-number (match-string 1 address)))
+ 16777216)
+ (* (float (string-to-number (match-string 2 address)))
+ 65536)
+ (* (float (string-to-number (match-string 3 address)))
+ 256)
+ (float (string-to-number (match-string 4 address)))))))
+ (if (string-match "\\." string)
+ (substring string 0 (match-beginning 0))
+ string)))
+
+(defun riece-ndcc-decode-address (address)
+ (let ((float-address (string-to-number (concat address ".0"))))
+ (format "%d.%d.%d.%d"
+ (floor (mod (/ float-address 16777216) 256))
+ (floor (mod (/ float-address 65536) 256))
+ (floor (mod (/ float-address 256) 256))
+ (floor (mod float-address 256)))))
+
+(defun riece-ndcc-server-sentinel (process status)
+ (when (string-match "^open from " status)
+ (let ((parent-name
+ (if (string-match " <[^>]+>$" (process-name process))
+ (substring (process-name process) 0 (match-beginning 0)))))
+ (save-excursion
+ (set-buffer (process-buffer (get-process parent-name)))
+ (goto-char (point-min))
+ (while (not (eobp))
+ (process-send-region process
+ (point)
+ (goto-char (min (+ 1024 (point)) (point-max))))
+ (message "Sending %s...(%d/%d)"
+ (buffer-file-name) (1- (point)) (buffer-size)))
+ (message "Sending %s...done"
+ (buffer-file-name)))
+ (kill-buffer (process-buffer (get-process parent-name))))
+ (kill-buffer (process-buffer process))))
+
+(defun riece-command-dcc-send (user file)
+ (interactive
+ (let ((completion-ignore-case t))
+ (unless riece-ndcc-server-address
+ (error "Set riece-ndcc-server-address to your host"))
+ (list (riece-completing-read-identity
+ "User: "
+ (riece-get-users-on-server (riece-current-server-name)))
+ (expand-file-name (read-file-name "File: ")))))
+ (let* (selective-display
+ (coding-system-for-read 'binary)
+ format-alist
+ jka-compr-compression-info-list
+ (buffer (find-file-noselect file))
+ process)
+ (with-current-buffer buffer ;To throw an error when the
+ (setq buffer-read-only t)) ;process has input.
+ (setq process (make-network-process :name "DCC" :buffer buffer
+ :host riece-ndcc-server-address
+ :server t :service t
+ :coding 'binary
+ :sentinel 'riece-ndcc-server-sentinel))
+ (riece-send-string
+ (format "PRIVMSG %s :\1DCC SEND %s %s %d %d\1\r\n"
+ (riece-identity-prefix user)
+ (file-name-nondirectory file)
+ (riece-ndcc-encode-address riece-ndcc-server-address)
+ (nth 1 (process-contact process))
+ (nth 7 (file-attributes file))))))
+
+(defun riece-ndcc-filter (process input)
+ (save-excursion
+ (set-buffer (process-buffer process))
+ (goto-char (point-max))
+ (insert input)
+ (message "Receiving %s from %s...(%d/%d)"
+ (file-name-nondirectory buffer-file-name)
+ riece-ndcc-request-user
+ (1- (point))
+ riece-ndcc-request-size)))
+
+(defun riece-ndcc-sentinel (process status)
+ (save-excursion
+ (set-buffer (process-buffer process))
+ (unless (= (buffer-size) riece-ndcc-request-size)
+ (error "Premature end of file"))
+ (message "Receiving %s from %s...done"
+ (file-name-nondirectory buffer-file-name)
+ riece-ndcc-request-user)
+ (let ((coding-system-for-write 'binary))
+ (save-buffer))))
+
+(defun riece-command-dcc-receive (request file)
+ (interactive
+ (progn
+ (unless riece-ndcc-requests
+ (error "No request"))
+ (list
+ (if (= (length riece-ndcc-requests) 1)
+ (car riece-ndcc-requests)
+ (with-output-to-temp-buffer "*Help*"
+ (let ((requests riece-ndcc-requests)
+ (index 1))
+ (while requests
+ (princ (format "%2d: %s %s (%d bytes)\n"
+ index
+ (car (car requests))
+ (nth 1 (car requests))
+ (nth 4 (car requests))))
+ (setq index (1+ index)
+ requests (cdr requests)))))
+ (let ((number (read-string "Request#: ")))
+ (unless (string-match "^[0-9]+$" number)
+ (error "Not a number"))
+ (if (or (> (setq number (string-to-number number))
+ (length riece-ndcc-requests))
+ (< number 1))
+ (error "Invalid number"))
+ (nth (1- number) riece-ndcc-requests)))
+ (expand-file-name (read-file-name "Save as: ")))))
+ (let* (selective-display
+ (coding-system-for-read 'binary)
+ (coding-system-for-write 'binary)
+ (process (open-network-stream
+ "DCC" " *DCC*"
+ (riece-ndcc-decode-address (nth 2 request))
+ (nth 3 request))))
+ (setq riece-ndcc-requests (delq request riece-ndcc-requests))
+ (with-current-buffer (process-buffer process)
+ (set-buffer-multibyte nil)
+ (buffer-disable-undo)
+ (setq buffer-file-name file)
+ (make-local-variable 'riece-ndcc-request-user)
+ (setq riece-ndcc-request-user (car request))
+ (make-local-variable 'riece-ndcc-request-size)
+ (setq riece-ndcc-request-size (nth 4 request)))
+ (set-process-filter process #'riece-ndcc-filter)
+ (set-process-sentinel process #'riece-ndcc-sentinel)))
+
+(defun riece-handle-dcc-request (prefix target message)
+ (let ((case-fold-search t))
+ (when (and (get 'riece-ndcc 'riece-addon-enabled)
+ (string-match
+ "SEND \\([^ ]+\\) \\([^ ]+\\) \\([^ ]+\\) \\([^ ]+\\)"
+ message))
+ (let ((file (match-string 1 message))
+ (address (match-string 2 message))
+ (port (string-to-number (match-string 3 message)))
+ (size (string-to-number (match-string 4 message)))
+ (buffer (if (riece-channel-p target)
+ (riece-channel-buffer (riece-make-identity
+ target riece-server-name))))
+ (user (riece-prefix-nickname prefix)))
+ (setq riece-ndcc-requests
+ (cons (list user file address port size)
+ riece-ndcc-requests))
+ (riece-insert-change buffer (format "DCC SEND from %s\n" user))
+ (riece-insert-change
+ (if (and riece-channel-buffer-mode
+ (not (eq buffer riece-channel-buffer)))
+ (list riece-dialogue-buffer riece-others-buffer)
+ riece-dialogue-buffer)
+ (concat
+ (riece-concat-server-name
+ (format "DCC SEND from %s (%s) to %s"
+ user
+ (riece-strip-user-at-host
+ (riece-prefix-user-at-host prefix))
+ target))
+ "\n")))
+ t)))
+
+(defun riece-ndcc-requires ()
+ '(riece-ctcp))
+
+(defvar riece-dialogue-mode-map)
+(defun riece-ndcc-insinuate ()
+ (unless (fboundp 'make-network-process)
+ (error "This Emacs does not have make-network-process"))
+ (add-hook 'riece-ctcp-dcc-request-hook 'riece-handle-dcc-request))
+
+(defun riece-ndcc-uninstall ()
+ (remove-hook 'riece-ctcp-dcc-request-hook 'riece-handle-dcc-request))
+
+(defun riece-ndcc-enable ()
+ (define-key riece-dialogue-mode-map "\C-ds" 'riece-command-dcc-send)
+ (define-key riece-dialogue-mode-map "\C-dr" 'riece-command-dcc-receive))
+
+(defun riece-ndcc-disable ()
+ (define-key riece-dialogue-mode-map "\C-ds" nil)
+ (define-key riece-dialogue-mode-map "\C-dr" nil))
+
+(provide 'riece-ndcc)
+
+;;; riece-ndcc.el ends here
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