6b7e1e69fe57bbed34a1dbbb79d53e1598b2b7e2
[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 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 (eval-when-compile
131   (autoload 'riece-exit "riece"))
132 (defun riece-open-server (server server-name)
133   (riece-server-keyword-bind server
134     (let (selective-display
135           (coding-system-for-read 'binary)
136           (coding-system-for-write 'binary)
137           process)
138       (if (equal server-name "")
139           (message "Connecting to IRC server...")
140         (message "Connecting to %s..." server-name))
141       (setq process
142             (funcall function (riece-server-process-name server-name)
143                      (concat " *IRC*" server-name)
144                      host service))
145       (if (equal server-name "")
146           (message "Connecting to IRC server...done")
147         (message "Connecting to %s...done" server-name))
148       (riece-reset-process-buffer process)
149       (with-current-buffer (process-buffer process)
150         (setq riece-server-name server-name))
151       (set-process-sentinel process 'riece-sentinel)
152       (set-process-filter process 'riece-filter)
153       (if (equal server-name "")
154           (message "Logging in to IRC server...")
155         (message "Logging in to %s..." server-name))
156       (if riece-reconnect-with-password ;password incorrect or not set.
157           (unwind-protect
158               (setq password
159                     (condition-case nil
160                         (let (inhibit-quit)
161                           (if (equal server-name "")
162                               (riece-read-passwd "Password: ")
163                             (riece-read-passwd (format "Password for %s: "
164                                                        server-name))))
165                       (quit
166                        (if (equal server-name "")
167                            (message "Password: Quit")
168                          (message (format "Password for %s: Quit"
169                                           server-name)))
170                        'quit)))
171             (setq riece-reconnect-with-password nil)))
172       (if (eq password 'quit)
173           (delete-process process)
174         (if password
175             (riece-process-send-string process
176                                        (format "PASS %s\r\n" password)))
177         (riece-process-send-string process
178                                    (format "USER %s * * :%s\r\n"
179                                            (user-real-login-name)
180                                            (or username
181                                                "No information given")))
182         (riece-process-send-string process (format "NICK %s\r\n" nickname))
183         (with-current-buffer (process-buffer process)
184           (setq riece-last-nickname riece-real-nickname
185                 riece-nick-accepted 'sent
186                 riece-coding-system coding))
187         (setq riece-server-process-alist
188               (cons (cons server-name process)
189                     riece-server-process-alist))))))
190
191 (defun riece-reset-process-buffer (process)
192   (save-excursion
193     (set-buffer (process-buffer process))
194     (if (fboundp 'set-buffer-multibyte)
195         (set-buffer-multibyte nil))
196     (kill-all-local-variables)
197     (make-local-variable 'riece-real-nickname)
198     (make-local-variable 'riece-last-nickname)
199     (make-local-variable 'riece-nick-accepted)
200     (make-local-variable 'riece-real-server-name)
201     (make-local-variable 'riece-real-userhost)
202     (make-local-variable 'riece-user-at-host)
203     (make-local-variable 'riece-user-at-host-type)
204     (make-local-variable 'riece-supported-user-modes)
205     (make-local-variable 'riece-supported-channel-modes)
206     (make-local-variable 'riece-channel-filter)
207     (make-local-variable 'riece-server-name)
208     (make-local-variable 'riece-read-point)
209     (setq riece-read-point (point-min))
210     (make-local-variable 'riece-obarray)
211     (setq riece-obarray (make-vector riece-obarray-size 0))
212     (make-local-variable 'riece-coding-system)
213     (buffer-disable-undo)
214     (erase-buffer)))
215
216 (defun riece-close-server-process (process)
217   (kill-buffer (process-buffer process))
218   (setq riece-server-process-alist
219         (delq (rassq process riece-server-process-alist)
220               riece-server-process-alist)))
221
222 (defun riece-server-process-opened (process)
223   (not (null (memq (process-status process) '(open run)))))
224
225 (defun riece-server-opened (&optional server-name)
226   (if server-name
227       (let ((process (riece-server-process server-name)))
228         (and process
229              (riece-server-process-opened process)))
230     (let ((alist riece-server-process-alist))
231       (catch 'found
232         (while alist
233           (if (riece-server-process-opened (cdr (car alist)))
234               (throw 'found t))
235           (setq alist (cdr alist)))))))
236
237 (defun riece-quit-server-process (process &optional message)
238   (if riece-quit-timeout
239       (riece-run-at-time riece-quit-timeout nil
240                          (lambda (process)
241                            (if (rassq process riece-server-process-alist)
242                                (delete-process process)))
243                          process))
244   (riece-process-send-string process
245                              (if message
246                                  (format "QUIT :%s\r\n" message)
247                                "QUIT\r\n")))
248
249 (provide 'riece-server)
250
251 ;;; riece-server.el ends here