e5cceb3d37c2a132efadf85603e840b126faf9e2
[riece] / 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 #'open-network-stream)
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
107 (defun riece-process-send-string (process string)
108   (with-current-buffer (process-buffer process)
109     (process-send-string process (riece-encode-coding-string string))))
110
111 (defun riece-current-server-name ()
112   (or riece-overriding-server-name
113                                         ;already in the server buffer
114       (if (local-variable-p 'riece-server-name (current-buffer))
115           riece-server-name
116         (if riece-current-channel
117             (riece-identity-server riece-current-channel)
118           (if (riece-server-opened "")
119               "")))))
120
121 (defun riece-send-string (string)
122   (let* ((server-name (riece-current-server-name))
123          (process (riece-server-process server-name)))
124     (unless process
125       (error "%s" (substitute-command-keys
126                    "Type \\[riece-command-open-server] to open server.")))
127     (riece-process-send-string process string)))
128
129 (defun riece-open-server (server server-name)
130   (riece-server-keyword-bind server
131     (let (selective-display
132           (coding-system-for-read 'binary)
133           (coding-system-for-write 'binary)
134           process)
135       (if (equal server-name "")
136           (message "Connecting to IRC server...")
137         (message "Connecting to %s..." server-name))
138       (setq process
139             (funcall function (riece-server-process-name server-name)
140                      (concat " *IRC*" server-name)
141                      host service))
142       (if (equal server-name "")
143           (message "Connecting to IRC server...done")
144         (message "Connecting to %s...done" server-name))
145       (riece-reset-process-buffer process)
146       (with-current-buffer (process-buffer process)
147         (setq riece-server-name server-name))
148       (set-process-sentinel process 'riece-sentinel)
149       (set-process-filter process 'riece-filter)
150       (if (equal server-name "")
151           (message "Logging in to IRC server...")
152         (message "Logging in to %s..." server-name))
153       (if riece-reconnect-with-password ;password incorrect or not set.
154           (unwind-protect
155               ;; XEmacs signals an error when the keyboard cannot be grabbed.
156               (condition-case nil
157                   (setq password (riece-read-passwd "Password: "))
158                 (error))
159             (setq riece-reconnect-with-password nil)))
160       (if password
161           (riece-process-send-string process
162                                      (format "PASS %s\r\n" password)))
163       (riece-process-send-string process
164                                  (format "USER %s * * :%s\r\n"
165                                          (user-real-login-name)
166                                          (or username
167                                              "No information given")))
168       (riece-process-send-string process (format "NICK %s\r\n" nickname))
169       (with-current-buffer (process-buffer process)
170         (setq riece-last-nickname riece-real-nickname
171               riece-nick-accepted 'sent
172               riece-coding-system coding))
173       (setq riece-server-process-alist
174             (cons (cons server-name process)
175                   riece-server-process-alist)))))
176
177 (defun riece-reset-process-buffer (process)
178   (save-excursion
179     (set-buffer (process-buffer process))
180     (if (fboundp 'set-buffer-multibyte)
181         (set-buffer-multibyte nil))
182     (kill-all-local-variables)
183     (make-local-variable 'riece-real-nickname)
184     (make-local-variable 'riece-last-nickname)
185     (make-local-variable 'riece-nick-accepted)
186     (make-local-variable 'riece-real-server-name)
187     (make-local-variable 'riece-real-userhost)
188     (make-local-variable 'riece-user-at-host)
189     (make-local-variable 'riece-user-at-host-type)
190     (make-local-variable 'riece-supported-user-modes)
191     (make-local-variable 'riece-supported-channel-modes)
192     (make-local-variable 'riece-channel-filter)
193     (make-local-variable 'riece-server-name)
194     (make-local-variable 'riece-read-point)
195     (setq riece-read-point (point-min))
196     (make-local-variable 'riece-obarray)
197     (setq riece-obarray (make-vector riece-obarray-size 0))
198     (make-local-variable 'riece-coding-system)
199     (buffer-disable-undo)
200     (erase-buffer)))
201
202 (defun riece-close-server-process (process)
203   (if riece-debug
204       (delete-process process)
205     (kill-buffer (process-buffer process)))
206   (setq riece-server-process-alist
207         (delq (rassq process riece-server-process-alist)
208               riece-server-process-alist)))
209
210 (defun riece-server-process-opened (process)
211   (not (null (memq (process-status process) '(open run)))))
212
213 (defun riece-server-opened (&optional server-name)
214   (if server-name
215       (let ((process (riece-server-process server-name)))
216         (and process
217              (riece-server-process-opened process)))
218     (let ((alist riece-server-process-alist))
219       (catch 'found
220         (while alist
221           (if (riece-server-process-opened (cdr (car alist)))
222               (throw 'found t))
223           (setq alist (cdr alist)))))))
224
225 (eval-when-compile
226   (autoload 'riece-exit "riece"))
227 (defun riece-quit-server-process (process &optional message)
228   (run-at-time riece-quit-timeout nil
229                (lambda (process)
230                  (when (rassq process riece-server-process-alist)
231                    (riece-close-server-process process)
232                    ;; If no server process is available, exit.
233                    (unless riece-server-process-alist
234                      (riece-exit))))
235                process)
236   (riece-process-send-string process
237                              (if message
238                                  (format "QUIT :%s\r\n" message)
239                                "QUIT\r\n")))
240
241 (provide 'riece-server)
242
243 ;;; riece-server.el ends here