elmo/elmo-net.el

   1 ;;; elmo-net.el --- Network module for ELMO.
   2
   3 ;; Copyright (C) 1998,1999,2000 Yuuichi Teranishi <teranisi@gohome.org>
   4
   5 ;; Author: Yuuichi Teranishi <teranisi@gohome.org>
   6 ;; Keywords: mail, net news
   7
   8 ;; This file is part of ELMO (Elisp Library for Message Orchestration).
   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
  26 ;;; Commentary:
  27 ;;
  28
  29 ;;; Code:
  30 ;;
  31 (eval-when-compile (require 'cl))
  32
  33 (require 'elmo-util)
  34 (require 'elmo-dop)
  35 (require 'elmo-vars)
  36 (require 'elmo-cache)
  37 (require 'elmo)
  38
  39 (defconst elmo-net-folder-name-syntax '((?@ [server ".+"])
  40                                         (?: [port "^[0-9]+$"])
  41                                         (?! stream-type)))
  42
  43 ;;; ELMO net folder
  44 (eval-and-compile
  45   (luna-define-class elmo-net-folder
  46                      (elmo-folder)
  47                      (user auth server port stream-type))
  48   (luna-define-internal-accessors 'elmo-net-folder))
  49
  50 ;;; Session
  51 (eval-and-compile
  52   (autoload 'starttls-negotiate "starttls")
  53   (autoload 'sasl-find-mechanism "sasl")
  54   (autoload 'sasl-make-client "sasl")
  55   (autoload 'sasl-mechanism-name "sasl")
  56   (autoload 'sasl-next-step "sasl")
  57   (autoload 'sasl-step-data "sasl")
  58   (autoload 'sasl-step-set-data "sasl"))
  59
  60 (defvar sasl-mechanisms)
  61
  62 (defcustom elmo-network-session-idle-timeout nil
  63   "Idle timeout of the network cache. Specified in seconds.
  64 If elapsed time since last access is larger than this value,
  65 cached session is not reused.
  66 If nil, network cache is reused."
  67   :type '(choice number (const nil))
  68   :group 'elmo)
  69
  70 (defcustom elmo-network-session-retry-count nil
  71   "Retry count for authentication when open network session.
  72 If nil, just once. If t, until success."
  73   :type '(choice (integer :tag "Times")
  74                  (const :tag "Just once" nil)
  75                  (const :tag "Until success" t))
  76   :group 'elmo)
  77
  78 ;;; Code:
  79 ;;
  80 (eval-and-compile
  81   (luna-define-class elmo-network-session () (name
  82                                               server
  83                                               port
  84                                               user
  85                                               auth
  86                                               stream-type
  87                                               process
  88                                               greeting
  89                                               last-accessed))
  90   (luna-define-internal-accessors 'elmo-network-session))
  91
  92 (luna-define-generic elmo-network-initialize-session (session)
  93   "Initialize SESSION (Called before authentication).")
  94
  95 (luna-define-generic elmo-network-initialize-session-buffer (session buffer)
  96   "Initialize SESSION's BUFFER.")
  97
  98 (luna-define-generic elmo-network-authenticate-session (session)
  99   "Authenticate SESSION.")
 100
 101 (luna-define-generic elmo-network-setup-session (session)
 102   "Setup SESSION. (Called after authentication).")
 103
 104 (luna-define-generic elmo-network-close-session (session)
 105   "Close SESSION.")
 106
 107 (luna-define-method
 108   elmo-network-initialize-session-buffer ((session
 109                                            elmo-network-session) buffer)
 110   (with-current-buffer buffer
 111     (set-buffer-multibyte nil)
 112     (buffer-disable-undo (current-buffer))))
 113
 114 (luna-define-method elmo-network-close-session ((session elmo-network-session))
 115   (when (elmo-network-session-process-internal session)
 116 ;;;    (memq (process-status (elmo-network-session-process-internal session))
 117 ;;;       '(open run))
 118     (kill-buffer (process-buffer
 119                   (elmo-network-session-process-internal session)))
 120     (delete-process (elmo-network-session-process-internal session))))
 121
 122 (defmacro elmo-network-stream-type-spec-string (stream-type)
 123   `(nth 0 ,stream-type))
 124
 125 (defmacro elmo-network-stream-type-symbol (stream-type)
 126   `(nth 1 ,stream-type))
 127
 128 (defmacro elmo-network-stream-type-feature (stream-type)
 129   `(nth 2 ,stream-type))
 130
 131 (defmacro elmo-network-stream-type-function (stream-type)
 132   `(nth 3 ,stream-type))
 133
 134 (defsubst elmo-network-session-password-key (session)
 135   (format "%s:%s/%s@%s:%d"
 136           (upcase
 137            (nth 1 (split-string (symbol-name
 138                                  (luna-class-name session)) "[4-]")))
 139           (elmo-network-session-user-internal session)
 140           (elmo-network-session-auth-internal session)
 141           (elmo-network-session-server-internal session)
 142           (elmo-network-session-port-internal session)))
 143
 144 (defvar elmo-network-session-cache nil)
 145
 146 (defsubst elmo-network-session-cache-key (name folder)
 147   "Returns session cache key for NAME and FOLDER."
 148   (format "%s:%s/%s@%s:%d%s"
 149           name
 150           (elmo-net-folder-user-internal folder)
 151           (elmo-net-folder-auth-internal folder)
 152           (elmo-net-folder-server-internal folder)
 153           (elmo-net-folder-port-internal folder)
 154           (or
 155            (elmo-network-stream-type-spec-string
 156             (elmo-net-folder-stream-type-internal folder)) "")))
 157
 158 (defun elmo-network-clear-session-cache ()
 159   "Clear session cache."
 160   (interactive)
 161   (dolist (pair elmo-network-session-cache)
 162     (elmo-network-close-session (cdr pair)))
 163   (setq elmo-network-session-cache nil))
 164
 165 (defsubst elmo-network-session-buffer-name (session)
 166   (format " *%s session for %s@%s:%d%s"
 167           (elmo-network-session-name-internal session)
 168           (elmo-network-session-user-internal session)
 169           (elmo-network-session-server-internal session)
 170           (elmo-network-session-port-internal session)
 171           (or (elmo-network-stream-type-spec-string
 172                (elmo-network-session-stream-type-internal session))
 173               "")))
 174
 175 (defmacro elmo-network-session-buffer (session)
 176   "Get buffer for SESSION."
 177   `(process-buffer (elmo-network-session-process-internal ,session)))
 178
 179 (defun elmo-network-get-session (class name folder &optional if-exists)
 180   "Get network session from session cache or a new network session.
 181 CLASS is the class name of the session.
 182 NAME is the name of the process.
 183 FOLDER is the ELMO folder structure.
 184 Returns a `elmo-network-session' instance.
 185 If optional argument IF-EXISTS is non-nil, it does not return session
 186 if there is no session cache.
 187 if making session failed, returns nil."
 188   (let (pair session key)
 189     (if (not (elmo-plugged-p
 190               (elmo-net-folder-server-internal folder)
 191               (elmo-net-folder-port-internal folder)
 192               (elmo-network-stream-type-symbol
 193                (elmo-net-folder-stream-type-internal folder))))
 194         (error "Unplugged"))
 195     (setq pair (assoc (setq key (elmo-network-session-cache-key name folder))
 196                       elmo-network-session-cache))
 197     (when (and pair
 198                (or (not (memq (process-status
 199                                (elmo-network-session-process-internal
 200                                 (cdr pair)))
 201                               '(open run)))
 202                    (and elmo-network-session-idle-timeout
 203                         (elmo-network-session-last-accessed-internal
 204                          (cdr pair))
 205                         (elmo-time-expire
 206                          (elmo-network-session-last-accessed-internal
 207                           (cdr pair))
 208                          elmo-network-session-idle-timeout))))
 209       (setq elmo-network-session-cache
 210             (delq pair elmo-network-session-cache))
 211       (elmo-network-close-session (cdr pair))
 212       (setq pair nil))
 213     (if pair
 214         (progn
 215           (elmo-network-session-set-last-accessed-internal
 216            (cdr pair) (current-time))
 217           (cdr pair))                   ; connection cache exists.
 218       (unless if-exists
 219         (setq session
 220               (elmo-network-open-session
 221                class
 222                name
 223                (elmo-net-folder-server-internal folder)
 224                (elmo-net-folder-port-internal folder)
 225                (elmo-net-folder-user-internal folder)
 226                (elmo-net-folder-auth-internal folder)
 227                (elmo-net-folder-stream-type-internal folder)))
 228         (setq elmo-network-session-cache
 229               (cons (cons key session)
 230                     elmo-network-session-cache))
 231         session))))
 232
 233 (defun elmo-network-session-buffer-create (session)
 234   (let ((buffer-name (elmo-network-session-buffer-name session))
 235         buffer)
 236     (when (get-buffer buffer-name)
 237       (kill-buffer buffer-name))
 238     (setq buffer (get-buffer-create buffer-name))
 239     (elmo-network-initialize-session-buffer session buffer)
 240     buffer))
 241
 242 (defun elmo-network-open-session (class name server port user auth
 243                                         stream-type)
 244   "Open an authenticated network session.
 245 CLASS is the class name of the session.
 246 NAME is the name of the process.
 247 SERVER is the name of the server server.
 248 PORT is the port number of the service.
 249 USER is the user-id for the authenticate.
 250 AUTH is the authenticate method name (symbol).
 251 STREAM-TYPE is the stream type (See also `elmo-network-stream-type-alist').
 252 Returns a process object.  if making session failed, returns nil."
 253   (let ((session
 254          (luna-make-entity class
 255                            :name name
 256                            :server server
 257                            :port port
 258                            :user user
 259                            :auth auth
 260                            :stream-type stream-type
 261                            :process nil
 262                            :greeting nil
 263                            :last-accessed (current-time)))
 264         (retry elmo-network-session-retry-count)
 265         success)
 266     (while (not success)
 267       (condition-case error
 268           (when (elmo-network-session-set-process-internal
 269                  session
 270                  (elmo-open-network-stream
 271                   (elmo-network-session-name-internal session)
 272                   (elmo-network-session-buffer-create session)
 273                   server port stream-type))
 274             (elmo-network-initialize-session session)
 275             (elmo-network-authenticate-session session)
 276             (elmo-network-setup-session session)
 277             (setq success t))
 278         (elmo-authenticate-error
 279          (elmo-remove-passwd (elmo-network-session-password-key session))
 280          (message "Authetication is failed")
 281          (sit-for 1)
 282          (elmo-network-close-session session)
 283          (unless (if (numberp retry)
 284                      (> (setq retry (1- retry)) 0)
 285                    retry)
 286            (signal (car error) (cdr error))))
 287         (elmo-open-error
 288          (elmo-set-plugged nil server port
 289                            (elmo-network-stream-type-symbol stream-type)
 290                            (current-time))
 291          (message "Auto plugged off at %s:%d :%s" server port (cadr error))
 292          (sit-for 1)
 293          (elmo-network-close-session session)
 294          (signal (car error) (cdr error)))
 295         (error
 296          (elmo-network-close-session session)
 297          (signal (car error) (cdr error)))))
 298     session))
 299
 300 (defun elmo-open-network-stream (name buffer server service stream-type)
 301   (let ((auto-plugged (and elmo-auto-change-plugged
 302                            (> elmo-auto-change-plugged 0)))
 303         process)
 304     (if (and stream-type
 305              (elmo-network-stream-type-feature stream-type))
 306         (require (elmo-network-stream-type-feature stream-type)))
 307     (condition-case err
 308         (let (process-connection-type)
 309           (as-binary-process
 310            (setq process
 311                  (if stream-type
 312                      (funcall (elmo-network-stream-type-function stream-type)
 313                               name buffer server service)
 314                    (open-network-stream name buffer server service)))))
 315       (error
 316        (when auto-plugged
 317          (elmo-set-plugged nil server service
 318                            (elmo-network-stream-type-symbol stream-type)
 319                            (current-time))
 320          (message "Auto plugged off at %s:%d" server service)
 321          (sit-for 1))
 322        (signal (car err) (cdr err))))
 323     (when process
 324       (process-kill-without-query process)
 325       (when auto-plugged
 326         (elmo-set-plugged t server service
 327                           (elmo-network-stream-type-symbol stream-type)))
 328       process)))
 329
 330 (defun elmo-get-network-stream-type (symbol)
 331   "Return network stream type corresponding to SYMBOL.
 332 Returned value is searched from `elmo-network-stream-type-alist'."
 333   (let ((alist elmo-network-stream-type-alist)
 334         spec)
 335     (while alist
 336       (when (eq (nth 1 (car alist)) symbol)
 337         (setq spec (car alist))
 338         (setq alist nil))
 339       (setq alist (cdr alist)))
 340     spec))
 341
 342 (defun elmo-net-folder-set-parameters (folder params &optional defaults)
 343   (let ((port (cdr (assq 'port params)))
 344         (stream-type (cdr (assq 'stream-type params))))
 345     ;; server
 346     (elmo-net-folder-set-server-internal
 347      folder
 348      (or (cdr (assq 'server params))
 349          (plist-get defaults :server)))
 350     ;; port
 351     (elmo-net-folder-set-port-internal
 352      folder
 353      (or (and port (string-to-number port))
 354          (plist-get defaults :port)))
 355     ;; stream-type
 356     (elmo-net-folder-set-stream-type-internal
 357      folder
 358      (or (and stream-type
 359               (assoc (concat "!" stream-type) elmo-network-stream-type-alist))
 360          (plist-get defaults :stream-type)))))
 361
 362 (luna-define-method elmo-folder-initialize ((folder elmo-net-folder) name)
 363   ;; user and auth should be set in subclass.
 364   (when (string-match "\\(@[^@:/!]+\\)?\\(:[0-9]+\\)?\\(!.*\\)?$" name)
 365     (elmo-net-folder-set-parameters
 366      folder
 367      (car (elmo-parse-separated-tokens
 368            (substring name (match-beginning 0))
 369            elmo-net-folder-name-syntax))))
 370   folder)
 371
 372 (luna-define-method elmo-net-port-info ((folder elmo-net-folder))
 373   (list (elmo-net-folder-server-internal folder)
 374         (elmo-net-folder-port-internal folder)
 375         (elmo-network-stream-type-symbol
 376          (elmo-net-folder-stream-type-internal folder))))
 377
 378 (defun elmo-net-port-label (folder)
 379   (concat
 380    (symbol-name (elmo-folder-type-internal folder))
 381    (if (elmo-net-folder-stream-type-internal folder)
 382        (concat "!" (symbol-name
 383                     (elmo-network-stream-type-symbol
 384                      (elmo-net-folder-stream-type-internal
 385                       folder)))))))
 386
 387 (luna-define-method elmo-folder-plugged-p ((folder elmo-net-folder))
 388   (apply 'elmo-plugged-p
 389          (append (elmo-net-port-info folder)
 390                  (list nil (quote (elmo-net-port-label folder))))))
 391
 392 (luna-define-method elmo-folder-set-plugged ((folder elmo-net-folder)
 393                                              plugged &optional add)
 394   (apply 'elmo-set-plugged plugged
 395          (append (elmo-net-port-info folder)
 396                  (list nil nil (quote (elmo-net-port-label folder)) add))))
 397
 398 (luna-define-method elmo-folder-create ((folder elmo-net-folder))
 399   (if (elmo-folder-plugged-p folder)
 400       (elmo-folder-send folder 'elmo-folder-create-plugged)
 401     (elmo-folder-send folder 'elmo-folder-create-unplugged)))
 402
 403 (luna-define-method elmo-folder-create-unplugged ((folder elmo-net-folder))
 404   (if elmo-enable-disconnected-operation
 405       (elmo-folder-create-dop folder)
 406     (error "Unplugged")))
 407
 408 (luna-define-method elmo-folder-exists-p ((folder elmo-net-folder))
 409   (if (elmo-folder-plugged-p folder)
 410       (elmo-folder-send folder 'elmo-folder-exists-p-plugged)
 411     ;; If unplugged, guess by msgdb.
 412     (file-directory-p (elmo-folder-msgdb-path folder))))
 413
 414 (luna-define-method elmo-folder-status ((folder elmo-net-folder))
 415   (if (elmo-folder-plugged-p folder)
 416       (elmo-folder-send folder 'elmo-folder-status-plugged)
 417     (elmo-folder-send folder 'elmo-folder-status-unplugged)))
 418
 419 (luna-define-method elmo-folder-status-unplugged
 420   ((folder elmo-net-folder))
 421   (if elmo-enable-disconnected-operation
 422       (elmo-folder-status-dop folder)
 423     (error "Unplugged")))
 424
 425 (luna-define-method elmo-folder-next-message-number ((folder elmo-net-folder))
 426   (if (elmo-folder-plugged-p folder)
 427       (elmo-folder-send folder 'elmo-folder-next-message-number-plugged)
 428     (elmo-folder-send folder 'elmo-folder-next-message-number-unplugged)))
 429
 430 (luna-define-method elmo-folder-next-message-number-unplugged
 431   ((folder elmo-net-folder))
 432   (if elmo-enable-disconnected-operation
 433       (elmo-folder-next-message-number-dop folder)
 434     (error "Unplugged")))
 435
 436 (luna-define-method elmo-folder-list-messages-internal
 437   ((folder elmo-net-folder) &optional nohide)
 438   (elmo-net-folder-list-messages-internal folder nohide))
 439
 440 (defun elmo-net-folder-list-messages-internal (folder nohide)
 441   (if (elmo-folder-plugged-p folder)
 442       (elmo-folder-send folder 'elmo-folder-list-messages-plugged nohide)
 443     (elmo-folder-send folder 'elmo-folder-list-messages-unplugged)))
 444
 445 (luna-define-method elmo-folder-list-messages-plugged
 446   ((folder elmo-net-folder))
 447   nil)
 448
 449 ;; Should consider offline append and removal.
 450 (luna-define-method elmo-folder-list-messages-unplugged ((folder
 451                                                           elmo-net-folder))
 452   (if elmo-enable-disconnected-operation
 453       (let ((deleting (elmo-dop-list-deleting-messages folder)))
 454         (nconc
 455          ;; delete deleting messages
 456          (elmo-delete-if
 457           (lambda (number) (memq number deleting))
 458           ;; current number-list.
 459           (elmo-folder-list-messages folder nil 'in-msgdb))
 460          ;; append appending messages
 461          (mapcar (lambda (x) (* -1 x))
 462                  (elmo-dop-spool-folder-list-messages folder))))
 463     t))
 464
 465 (luna-define-method elmo-folder-list-flagged-internal ((folder elmo-net-folder)
 466                                                        flag)
 467   (if (and (elmo-folder-plugged-p folder)
 468            (elmo-folder-use-flag-p folder))
 469       (elmo-folder-send folder 'elmo-folder-list-flagged-plugged flag)
 470     ;; Should consider offline append and removal?
 471     t))
 472
 473 (luna-define-method elmo-folder-list-flagged-plugged ((folder elmo-net-folder)
 474                                                       flag)
 475   t)
 476
 477 (luna-define-method elmo-folder-delete-messages-internal ((folder
 478                                                            elmo-net-folder)
 479                                                           numbers)
 480    (if (elmo-folder-plugged-p folder)
 481        (elmo-folder-send folder 'elmo-folder-delete-messages-plugged numbers)
 482      (elmo-folder-send folder 'elmo-folder-delete-messages-unplugged numbers)))
 483
 484 (luna-define-method elmo-folder-delete-messages-unplugged ((folder
 485                                                             elmo-net-folder)
 486                                                            numbers)
 487   (elmo-folder-delete-messages-dop folder numbers))
 488
 489 (luna-define-method elmo-folder-msgdb-create ((folder elmo-net-folder)
 490                                               numbers flag-table)
 491   (if (elmo-folder-plugged-p folder)
 492       (elmo-folder-send folder 'elmo-folder-msgdb-create-plugged
 493                         numbers flag-table)
 494     (elmo-folder-send folder 'elmo-folder-msgdb-create-unplugged
 495                       numbers flag-table)))
 496
 497 (luna-define-method elmo-folder-msgdb-create-unplugged ((folder
 498                                                          elmo-net-folder)
 499                                                         numbers
 500                                                         flag-table)
 501   ;; XXXX should be appended to already existing msgdb.
 502   (elmo-dop-msgdb
 503    (elmo-folder-msgdb-create (elmo-dop-spool-folder folder)
 504                              (mapcar 'abs numbers)
 505                              flag-table)))
 506
 507 (luna-define-method elmo-folder-set-flag :before ((folder elmo-net-folder)
 508                                                   numbers
 509                                                   flag
 510                                                   &optional is-local)
 511   (when (and (not is-local)
 512              (elmo-folder-use-flag-p folder))
 513     (elmo-folder-send folder
 514                       (if (elmo-folder-plugged-p folder)
 515                           'elmo-folder-set-flag-plugged
 516                         'elmo-folder-set-flag-unplugged)
 517                       numbers
 518                       flag)))
 519
 520 (luna-define-method elmo-folder-unset-flag :before ((folder elmo-net-folder)
 521                                                     numbers
 522                                                     flag
 523                                                     &optional is-local)
 524   (when (and (not is-local)
 525              (elmo-folder-use-flag-p folder))
 526     (elmo-folder-send folder
 527                       (if (elmo-folder-plugged-p folder)
 528                           'elmo-folder-unset-flag-plugged
 529                         'elmo-folder-unset-flag-unplugged)
 530                       numbers
 531                       flag)))
 532
 533 (luna-define-method elmo-folder-set-flag-unplugged ((folder elmo-net-folder)
 534                                                     numbers flag)
 535   (elmo-folder-set-flag-dop folder numbers flag))
 536
 537 (luna-define-method elmo-folder-unset-flag-unplugged ((folder elmo-net-folder)
 538                                                       numbers flag)
 539   (elmo-folder-unset-flag-dop folder numbers flag))
 540
 541 (luna-define-method elmo-message-encache :around ((folder elmo-net-folder)
 542                                                   number &optional read)
 543   (if (elmo-folder-plugged-p folder)
 544       (luna-call-next-method)
 545     (if elmo-enable-disconnected-operation
 546         (elmo-message-encache-dop folder number read)
 547       (error "Unplugged"))))
 548
 549 (luna-define-generic elmo-message-fetch-plugged (folder number strategy
 550                                                         &optional
 551                                                         section
 552                                                         outbuf
 553                                                         unseen)
 554   "")
 555
 556 (luna-define-generic elmo-message-fetch-unplugged (folder number strategy
 557                                                           &optional
 558                                                           section
 559                                                           outbuf
 560                                                           unseen)
 561   "")
 562
 563 (luna-define-method elmo-message-fetch-internal ((folder elmo-net-folder)
 564                                                  number strategy
 565                                                  &optional section unseen)
 566   (if (elmo-folder-plugged-p folder)
 567       (elmo-message-fetch-plugged folder number
 568                                   strategy section
 569                                   (current-buffer) unseen)
 570     (elmo-message-fetch-unplugged folder number
 571                                   strategy section
 572                                   (current-buffer) unseen)))
 573
 574 (luna-define-method elmo-message-fetch-unplugged
 575   ((folder elmo-net-folder) number strategy  &optional section outbuf unseen)
 576   (if (and elmo-enable-disconnected-operation
 577            (< number 0))
 578       (elmo-message-fetch-internal
 579        (elmo-dop-spool-folder folder) (abs number) strategy
 580        section unseen)
 581     (error "Unplugged")))
 582
 583 (luna-define-method elmo-folder-check ((folder elmo-net-folder))
 584   (if (elmo-folder-plugged-p folder)
 585       (elmo-folder-send folder 'elmo-folder-check-plugged)))
 586
 587 (luna-define-method elmo-folder-close :after ((folder elmo-net-folder))
 588   (if (elmo-folder-plugged-p folder)
 589       (elmo-folder-send folder 'elmo-folder-check-plugged)))
 590
 591 (luna-define-method elmo-folder-diff :around ((folder elmo-net-folder))
 592   (if (and (elmo-folder-use-flag-p folder)
 593            (elmo-folder-plugged-p folder))
 594       (elmo-folder-send folder 'elmo-folder-diff-plugged)
 595     (luna-call-next-method)))
 596
 597 (luna-define-method elmo-folder-local-p ((folder elmo-net-folder))
 598   nil)
 599
 600 (luna-define-method elmo-quit ((folder elmo-net-folder))
 601   (elmo-network-clear-session-cache))
 602
 603 (require 'product)
 604 (product-provide (provide 'elmo-net) (require 'elmo-version))
 605
 606 ;;; elmo-net.el ends here