cgit.sxemacs.org Git - riece/blob - lisp/riece-server.el

   1 ;;; riece-server.el --- functions to open and close servers
   2 ;; Copyright (C) 1998-2003 Daiki Ueno
   3
   4 ;; Author: Daiki Ueno <ueno@unixuser.org>
   5 ;; Created: 1998-09-28
   6 ;; Keywords: IRC, riece
   7
   8 ;; This file is part of Riece.
   9
  10 ;; This program is free software; you can redistribute it and/or modify
  11 ;; it under the terms of the GNU General Public License as published by
  12 ;; the Free Software Foundation; either version 2, or (at your option)
  13 ;; any later version.
  14
  15 ;; This program is distributed in the hope that it will be useful,
  16 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18 ;; GNU General Public License for more details.
  19
  20 ;; You should have received a copy of the GNU General Public License
  21 ;; along with GNU Emacs; see the file COPYING.  If not, write to the
  22 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  23 ;; Boston, MA 02111-1307, USA.
  24
  25 ;;; Code:
  26
  27 (require 'riece-options)
  28 (require 'riece-globals)                ;for server local variables.
  29 (require 'riece-coding)                 ;riece-default-coding-system
  30 (require 'riece-identity)
  31 (require 'riece-compat)
  32
  33 (eval-and-compile
  34   (defvar riece-server-keyword-map
  35     '((:host)
  36       (:service 6667)
  37       (:nickname riece-nickname)
  38       (:username riece-username)
  39       (:password)
  40       (:function riece-default-open-connection-function)
  41       (:coding riece-default-coding-system))
  42     "Mapping from keywords to default values.
  43 All keywords that can be used must be listed here."))
  44
  45 (defmacro riece-server-keyword-bind (plist &rest body)
  46   "Return a `let' form that binds all variables in PLIST.
  47 After this is done, BODY will be executed in the scope
  48 of the `let' form.
  49
  50 The variables bound and their default values are described by
  51 the `riece-server-keyword-map' variable."
  52   `(let ,(mapcar
  53           (lambda (keyword)
  54             (list (intern (substring (symbol-name (car keyword)) 1))
  55                   (if (cadr keyword)
  56                       `(or (plist-get ,plist ',(car keyword))
  57                            ,(cadr keyword))
  58                     `(plist-get ,plist ',(car keyword)))))
  59           riece-server-keyword-map)
  60      ,@body))
  61
  62 (put 'riece-server-keyword-bind 'lisp-indent-function 1)
  63 (put 'riece-server-keyword-bind 'edebug-form-spec '(form body))
  64
  65 (defun riece-server-parse-string (string)
  66   "Convert a STRING set as `riece-server' and return a property list."
  67   (when (or (string-match "^\\[\\([^]]+\\)\\]:?\\([0-9]*\\)" string)
  68             (string-match "^\\([^:]+\\):?\\([0-9]*\\)" string))
  69     (let ((host (match-string 1 string))
  70           (service (match-string 2 string))
  71           (password (substring string (match-end 0)))
  72           plist)
  73       (setq plist (cons `(:host ,host) plist))
  74       (unless (equal service "")
  75         (setq plist (cons `(:service ,(string-to-int service)) plist)))
  76       (unless (equal password "")
  77         (setq plist (cons `(:password ,(substring password 1)) plist)))
  78       (apply #'nconc plist))))
  79
  80 (defun riece-server-name-to-server (server-name)
  81   (let ((entry (assoc server-name riece-server-alist)))
  82     (if entry
  83         (unless (listp (cdr entry))
  84           (setcdr entry (riece-server-parse-string (cdr entry))))
  85       (setq entry (cons server-name (riece-server-parse-string server-name))
  86             riece-server-alist (cons entry riece-server-alist)
  87             riece-save-variables-are-dirty t))
  88     (cdr entry)))
  89
  90 (defun riece-server-process-name (server-name)
  91   (if (equal server-name "")
  92       "IRC"
  93     (format "IRC<%s>" server-name)))
  94
  95 (defun riece-server-process (server-name)
  96   (cdr (assoc server-name riece-server-process-alist)))
  97
  98 (defmacro riece-with-server-buffer (server-name &rest body)
  99   `(let ((process (riece-server-process ,server-name)))
 100      (if process
 101          (with-current-buffer (process-buffer process)
 102            ,@body)
 103        (error "Server closed"))))
 104
 105 (put 'riece-with-server-buffer 'lisp-indent-function 1)
 106 (put 'riece-with-server-buffer 'edebug-form-spec '(form body))
 107
 108 (defun riece-process-send-string (process string)
 109   (with-current-buffer (process-buffer process)
 110     (process-send-string process (riece-encode-coding-string string))))
 111
 112 (defun riece-current-server-name ()
 113   (or riece-overriding-server-name
 114                                         ;already in the server buffer
 115       (if (local-variable-p 'riece-server-name (current-buffer))
 116           riece-server-name
 117         (if riece-current-channel
 118             (riece-identity-server riece-current-channel)
 119           (if (riece-server-opened "")
 120               "")))))
 121
 122 (defun riece-send-string (string)
 123   (let* ((server-name (riece-current-server-name))
 124          (process (riece-server-process server-name)))
 125     (unless process
 126       (error "%s" (substitute-command-keys
 127                    "Type \\[riece-command-open-server] to open server.")))
 128     (riece-process-send-string process string)))
 129
 130 (defun riece-open-server (server server-name)
 131   (riece-server-keyword-bind server
 132     (let (selective-display
 133           (coding-system-for-read 'binary)
 134           (coding-system-for-write 'binary)
 135           process)
 136       (if (equal server-name "")
 137           (message "Connecting to IRC server...")
 138         (message "Connecting to %s..." server-name))
 139       (setq process
 140             (funcall function (riece-server-process-name server-name)
 141                      (concat " *IRC*" server-name)
 142                      host service))
 143       (if (equal server-name "")
 144           (message "Connecting to IRC server...done")
 145         (message "Connecting to %s...done" server-name))
 146       (riece-reset-process-buffer process)
 147       (with-current-buffer (process-buffer process)
 148         (setq riece-server-name server-name))
 149       (set-process-sentinel process 'riece-sentinel)
 150       (set-process-filter process 'riece-filter)
 151       (if (equal server-name "")
 152           (message "Logging in to IRC server...")
 153         (message "Logging in to %s..." server-name))
 154       (if riece-reconnect-with-password ;password incorrect or not set.
 155           (unwind-protect
 156               ;; XEmacs signals an error when the keyboard cannot be grabbed.
 157               (condition-case nil
 158                   (setq password
 159                         (if (equal server-name "")
 160                             (riece-read-passwd "Password: ")
 161                           (riece-read-passwd (format "Password for %s: "
 162                                                      server-name))))
 163                 (error))
 164             (setq riece-reconnect-with-password nil)))
 165       (if password
 166           (riece-process-send-string process
 167                                      (format "PASS %s\r\n" password)))
 168       (riece-process-send-string process
 169                                  (format "USER %s * * :%s\r\n"
 170                                          (user-real-login-name)
 171                                          (or username
 172                                              "No information given")))
 173       (riece-process-send-string process (format "NICK %s\r\n" nickname))
 174       (with-current-buffer (process-buffer process)
 175         (setq riece-last-nickname riece-real-nickname
 176               riece-nick-accepted 'sent
 177               riece-coding-system coding))
 178       (setq riece-server-process-alist
 179             (cons (cons server-name process)
 180                   riece-server-process-alist)))))
 181
 182 (defun riece-reset-process-buffer (process)
 183   (save-excursion
 184     (set-buffer (process-buffer process))
 185     (if (fboundp 'set-buffer-multibyte)
 186         (set-buffer-multibyte nil))
 187     (kill-all-local-variables)
 188     (make-local-variable 'riece-real-nickname)
 189     (make-local-variable 'riece-last-nickname)
 190     (make-local-variable 'riece-nick-accepted)
 191     (make-local-variable 'riece-real-server-name)
 192     (make-local-variable 'riece-real-userhost)
 193     (make-local-variable 'riece-user-at-host)
 194     (make-local-variable 'riece-user-at-host-type)
 195     (make-local-variable 'riece-supported-user-modes)
 196     (make-local-variable 'riece-supported-channel-modes)
 197     (make-local-variable 'riece-channel-filter)
 198     (make-local-variable 'riece-server-name)
 199     (make-local-variable 'riece-read-point)
 200     (setq riece-read-point (point-min))
 201     (make-local-variable 'riece-obarray)
 202     (setq riece-obarray (make-vector riece-obarray-size 0))
 203     (make-local-variable 'riece-coding-system)
 204     (buffer-disable-undo)
 205     (erase-buffer)))
 206
 207 (defun riece-close-server-process (process)
 208   (if riece-debug
 209       (delete-process process)
 210     (kill-buffer (process-buffer process)))
 211   (setq riece-server-process-alist
 212         (delq (rassq process riece-server-process-alist)
 213               riece-server-process-alist)))
 214
 215 (defun riece-server-process-opened (process)
 216   (not (null (memq (process-status process) '(open run)))))
 217
 218 (defun riece-server-opened (&optional server-name)
 219   (if server-name
 220       (let ((process (riece-server-process server-name)))
 221         (and process
 222              (riece-server-process-opened process)))
 223     (let ((alist riece-server-process-alist))
 224       (catch 'found
 225         (while alist
 226           (if (riece-server-process-opened (cdr (car alist)))
 227               (throw 'found t))
 228           (setq alist (cdr alist)))))))
 229
 230 (eval-when-compile
 231   (autoload 'riece-exit "riece"))
 232 (defun riece-quit-server-process (process &optional message)
 233   (if riece-quit-timeout
 234       (riece-run-at-time riece-quit-timeout nil
 235                          (lambda (process)
 236                            (when (rassq process riece-server-process-alist)
 237                              (riece-close-server-process process)
 238                              ;; If no server process is available, exit.
 239                              (unless riece-server-process-alist
 240                                (riece-exit))))
 241                          process))
 242   (riece-process-send-string process
 243                              (if message
 244                                  (format "QUIT :%s\r\n" message)
 245                                "QUIT\r\n")))
 246
 247 (provide 'riece-server)
 248
 249 ;;; riece-server.el ends here