--- /dev/null
+;;; riece-rdcc.el --- DCC file sending protocol support (written in Ruby) -*- 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-misc)
+(require 'riece-channel)
+(require 'riece-identity)
+(require 'riece-ctcp) ;for riece-ctcp-additional-clientinfo
+(require 'riece-ruby)
+(require 'riece-mcat)
+
+(defgroup riece-rdcc nil
+ "DCC written in Ruby."
+ :prefix "riece-"
+ :group 'riece)
+
+(defcustom riece-rdcc-server-address nil
+ "Local address of the DCC server.
+Only used for sending files."
+ :type 'string
+ :group 'riece-rdcc)
+
+(defcustom riece-rdcc-server-port nil
+ "Local port of the DCC server.
+Only used for sending files."
+ :type 'integer
+ :group 'riece-rdcc)
+
+(defcustom riece-rdcc-send-program
+ '("\
+require 'socket'
+address = " address "
+port = " port "
+unless address
+ sock = UDPSocket.new
+ sock.connect('164.46.176.4', 7) # www.unixuser.org/echo
+ address = sock.getsockname[4 .. 7].unpack('CCCC').join('.')
+end
+server = TCPServer.new(address, port)
+output(\"#{server.addr[3].split(/\\./).collect{|c| c.to_i}.pack('CCCC').unpack('N')[0]} #{server.addr[1]}\")
+session = server.accept
+if session
+ total = 0
+ File.open(" file ") {|file|
+ while (bytes = file.read(" block-size "))
+ total += bytes.length
+ output(total)
+ session.write(bytes)
+ begin
+ buf = session.read(4)
+ end until buf.unpack('N')[0] == total
+ end
+ }
+ session.close
+end
+")
+ "Ruby program to send file with DCC."
+ :type 'sexp
+ :group 'riece-rdcc)
+
+(defcustom riece-rdcc-decode-address-program
+ '("\"#{" address " >> 24 & 0xFF}.#{" address " >> 16 & 0xFF}.#{"
+ address " >> 8 & 0xFF}.#{" address " & 0xFF}\"")
+ "Ruby program to numeric IP address."
+ :type 'sexp
+ :group 'riece-rdcc)
+
+(defcustom riece-rdcc-save-directory nil
+ "Default directory where received files are saved in."
+ :type 'directory
+ :group 'riece-rdcc)
+
+(defcustom riece-rdcc-block-size 1024
+ "Number of bytes sent as a block."
+ :type 'integer
+ :group 'riece-rdcc)
+
+(defvar riece-rdcc-requests nil)
+
+(defvar riece-rdcc-request-user nil)
+(defvar riece-rdcc-request-file nil)
+(defvar riece-rdcc-request-size nil)
+
+(defvar riece-rdcc-temp-file nil)
+(defvar riece-rdcc-received-size nil)
+
+(defconst riece-rdcc-description
+ "DCC file sending protocol support (written in Ruby.)")
+
+(defvar temporary-file-directory)
+(defvar jka-compr-compression-info-list)
+(defvar jam-zcat-filename-list)
+
+(defun riece-rdcc-output-handler (name output _time)
+ (if (string-match "\\([0-9]+\\) \\([0-9]+\\)" output)
+ (let ((address (match-string 1 output))
+ (port (match-string 2 output)))
+ (riece-send-string
+ (format "PRIVMSG %s :\1DCC SEND %s %s %s %d\1\r\n"
+ (riece-identity-prefix
+ (riece-ruby-property name 'riece-rdcc-request-user))
+ (file-name-nondirectory
+ (riece-ruby-property name 'riece-rdcc-request-file))
+ address port
+ (riece-ruby-property name 'riece-rdcc-request-size)))))
+ (riece-ruby-set-output-handler name #'riece-rdcc-output-handler-2))
+
+(defun riece-rdcc-output-handler-2 (name output _time)
+ (message (riece-mcat "Sending %s...(%s/%d)")
+ (riece-ruby-property name 'riece-rdcc-request-file)
+ (string-to-number output)
+ (riece-ruby-property name 'riece-rdcc-request-size)))
+
+(defun riece-rdcc-exit-handler (name)
+ (message (riece-mcat "Sending %s...done")
+ (riece-ruby-property name 'riece-rdcc-request-file)))
+
+(defun riece-command-dcc-send (user file)
+ (interactive
+ (let ((completion-ignore-case t))
+ (list (riece-completing-read-identity
+ (riece-mcat "User: ")
+ (riece-get-users-on-server (riece-current-server-name)))
+ (expand-file-name (read-file-name (riece-mcat "File: "))))))
+ (let ((name (riece-ruby-execute
+ (riece-ruby-substitute-variables
+ riece-rdcc-send-program
+ (list (cons 'address
+ (if riece-rdcc-server-address
+ (concat "'" riece-rdcc-server-address
+ "'")
+ "nil"))
+ (cons 'port
+ (if riece-rdcc-server-port
+ (number-to-string riece-rdcc-server-port)
+ "0"))
+ (cons 'file
+ (concat "'" file "'"))
+ (cons 'block-size
+ (number-to-string
+ riece-rdcc-block-size)))))))
+ (riece-ruby-set-property name 'riece-rdcc-request-user user)
+ (riece-ruby-set-property name 'riece-rdcc-request-file file)
+ (riece-ruby-set-property name 'riece-rdcc-request-size
+ (nth 7 (file-attributes file)))
+ (riece-ruby-set-output-handler name #'riece-rdcc-output-handler)
+ (riece-ruby-set-exit-handler name #'riece-rdcc-exit-handler)))
+
+(defun riece-rdcc-filter (process input)
+ (with-current-buffer (process-buffer process)
+ (erase-buffer)
+ (insert input)
+ (let ((coding-system-for-write 'binary)
+ jka-compr-compression-info-list jam-zcat-filename-list)
+ (write-region (point-min) (point-max) riece-rdcc-temp-file t 0))
+ (setq riece-rdcc-received-size (+ (buffer-size) riece-rdcc-received-size))
+ (process-send-string
+ process
+ (format "%c%c%c%c"
+ (lsh riece-rdcc-received-size -24)
+ (logand (lsh riece-rdcc-received-size -16) 255)
+ (logand (lsh riece-rdcc-received-size -8) 255)
+ (logand riece-rdcc-received-size 255)))
+ (message (riece-mcat "Receiving %s from %s...(%s/%s)")
+ (file-name-nondirectory riece-rdcc-request-file)
+ riece-rdcc-request-user
+ (riece-rdcc-format-size riece-rdcc-received-size)
+ (riece-rdcc-format-size riece-rdcc-request-size))
+ (if (= riece-rdcc-received-size riece-rdcc-request-size)
+ (set-process-filter process nil))))
+
+(defun riece-rdcc-sentinel (process _status)
+ (with-current-buffer (process-buffer process)
+ (unless (= riece-rdcc-received-size riece-rdcc-request-size)
+ (error "Premature end of file"))
+ (message (riece-mcat "Receiving %s from %s...done")
+ (file-name-nondirectory riece-rdcc-request-file)
+ riece-rdcc-request-user)
+ (condition-case nil
+ (progn
+ (rename-file riece-rdcc-temp-file riece-rdcc-request-file)
+ (delete-directory (file-name-directory riece-rdcc-temp-file)))
+ (file-already-exists
+ (error "Can't save %s. Temporarily saved in %s"
+ riece-rdcc-request-file riece-rdcc-temp-file))))
+ (kill-buffer (process-buffer process)))
+
+(defun riece-rdcc-decode-address (address)
+ (let ((name (riece-ruby-execute
+ (riece-ruby-substitute-variables
+ riece-rdcc-decode-address-program
+ (list (cons 'address address)))))
+ response)
+ (while (equal (nth 2 (setq response (riece-ruby-inspect name))) "running")
+ (accept-process-output riece-ruby-process))
+ (riece-ruby-clear name)
+ (nth 1 response)))
+
+(defun riece-command-dcc-receive (request file)
+ (interactive
+ (progn
+ (unless riece-rdcc-requests
+ (error "No request"))
+ (let* ((request
+ (if (= (length riece-rdcc-requests) 1)
+ (car riece-rdcc-requests)
+ (with-output-to-temp-buffer "*Help*"
+ (let ((requests riece-rdcc-requests)
+ (index 1))
+ (while requests
+ (princ (format (riece-mcat "%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-rdcc-requests))
+ (< number 1))
+ (error "Invalid number"))
+ (nth (1- number) riece-rdcc-requests))))
+ (default-name (expand-file-name
+ (convert-standard-filename (nth 1 request))
+ (or riece-rdcc-save-directory
+ default-directory))))
+ (list request
+ (expand-file-name
+ (read-file-name
+ (format (riece-mcat "Save as (default %s) ")
+ (file-name-nondirectory default-name))
+ (file-name-directory default-name)
+ default-name))))))
+ (let* ((temp-file (expand-file-name
+ (file-name-nondirectory file)
+ (expand-file-name (make-temp-name "riece-rdcc")
+ (if (featurep 'xemacs)
+ (temp-directory)
+ temporary-file-directory))))
+ (orig-mode (default-file-modes))
+ selective-display
+ (coding-system-for-read 'binary)
+ (coding-system-for-write 'binary)
+ process)
+ (unwind-protect
+ (progn
+ (set-default-file-modes 448)
+ ;; This may throw an error.
+ (make-directory (file-name-directory temp-file)))
+ (set-default-file-modes orig-mode))
+ (setq process (open-network-stream
+ "DCC" (generate-new-buffer " *DCC*")
+ (riece-rdcc-decode-address (nth 2 request))
+ (nth 3 request)))
+ (setq riece-rdcc-requests (delq request riece-rdcc-requests))
+ (with-current-buffer (process-buffer process)
+ (if (fboundp 'set-buffer-multibyte)
+ (set-buffer-multibyte nil))
+ (buffer-disable-undo)
+ (erase-buffer)
+ (make-local-variable 'riece-rdcc-request-user)
+ (setq riece-rdcc-request-user (car request))
+ (make-local-variable 'riece-rdcc-request-file)
+ (setq riece-rdcc-request-file file)
+ (make-local-variable 'riece-rdcc-request-size)
+ (setq riece-rdcc-request-size (nth 4 request))
+ (make-local-variable 'riece-rdcc-temp-file)
+ (setq riece-rdcc-temp-file temp-file)
+ (make-local-variable 'riece-rdcc-received-size)
+ (setq riece-rdcc-received-size 0))
+ (set-process-filter process #'riece-rdcc-filter)
+ (set-process-sentinel process #'riece-rdcc-sentinel)))
+
+(defun riece-rdcc-format-size (size)
+ (if (< size 1024)
+ (format "%0.1f" size)
+ (setq size (/ size 1024.0))
+ (if (< size 1024)
+ (format "%0.1fKB" size)
+ (setq size (/ size 1024.0))
+ (if (< size 1024)
+ (format "%0.1fMB" size)
+ (format "%0.1fGB" (/ size 1024.0))))))
+
+(defun riece-handle-dcc-request (prefix target message)
+ (let ((case-fold-search t))
+ (when (and (get 'riece-rdcc 'riece-addon-enabled)
+ (string-match
+ "SEND \\(\\([^ ]+\\)\\|\"\\(.+\\)\"\\) \\([^ ]+\\) \\([^ ]+\\) \\([^ ]+\\)"
+ message))
+ (let ((file (or (match-string 2 message)
+ (match-string 3 message)))
+ (address (match-string 4 message))
+ (port (string-to-number (match-string 5 message)))
+ (size (string-to-number (match-string 6 message)))
+ (buffer (if (riece-channel-p target)
+ (riece-channel-buffer (riece-make-identity
+ target riece-server-name))))
+ (user (riece-prefix-nickname prefix)))
+ (setq riece-rdcc-requests
+ (cons (list user file address port size)
+ riece-rdcc-requests))
+ (message "%s"
+ (with-current-buffer (window-buffer (selected-window))
+ (substitute-command-keys
+ (format
+ (riece-mcat
+ "Type \\[riece-command-dcc-receive] to receive")
+ user))))
+ (riece-insert-change buffer (format "DCC SEND from %s: %s (%s)\n"
+ user file
+ (riece-rdcc-format-size size)))
+ (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: %s (%s)"
+ user
+ (riece-strip-user-at-host
+ (riece-prefix-user-at-host prefix))
+ (riece-decode-coding-string target)
+ file
+ (riece-rdcc-format-size size)))
+ "\n")))
+ t)))
+
+(defun riece-rdcc-requires ()
+ '(riece-ctcp))
+
+(defvar riece-dialogue-mode-map)
+(defun riece-rdcc-insinuate ()
+ (add-to-list 'riece-ctcp-additional-clientinfo "DCC")
+ (add-hook 'riece-ctcp-dcc-request-hook 'riece-handle-dcc-request))
+
+(defun riece-rdcc-uninstall ()
+ (setq riece-ctcp-additional-clientinfo
+ (delete "DCC" riece-ctcp-additional-clientinfo))
+ (remove-hook 'riece-ctcp-dcc-request-hook 'riece-handle-dcc-request))
+
+(defun riece-rdcc-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-rdcc-disable ()
+ (define-key riece-dialogue-mode-map "\C-ds" nil)
+ (define-key riece-dialogue-mode-map "\C-dr" nil))
+
+(provide 'riece-rdcc)
+
+;;; riece-rdcc.el ends here
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