elmo/elmo-imap4.el

   1 ;;; elmo-imap4.el --- IMAP4 Interface for ELMO.
   2
   3 ;; Copyright (C) 1998,1999,2000 Yuuichi Teranishi <teranisi@gohome.org>
   4 ;; Copyright (C) 1999,2000      Kenichi OKADA <okada@opaopa.org>
   5 ;; Copyright (C) 2000           OKAZAKI Tetsurou <okazaki@be.to>
   6 ;; Copyright (C) 2000           Daiki Ueno <ueno@unixuser.org>
   7
   8 ;; Author: Yuuichi Teranishi <teranisi@gohome.org>
   9 ;;      Kenichi OKADA <okada@opaopa.org>
  10 ;;      OKAZAKI Tetsurou <okazaki@be.to>
  11 ;;      Daiki Ueno <ueno@unixuser.org>
  12 ;; Keywords: mail, net news
  13
  14 ;; This file is part of ELMO (Elisp Library for Message Orchestration).
  15
  16 ;; This program is free software; you can redistribute it and/or modify
  17 ;; it under the terms of the GNU General Public License as published by
  18 ;; the Free Software Foundation; either version 2, or (at your option)
  19 ;; any later version.
  20 ;;
  21 ;; This program is distributed in the hope that it will be useful,
  22 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  23 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  24 ;; GNU General Public License for more details.
  25 ;;
  26 ;; You should have received a copy of the GNU General Public License
  27 ;; along with GNU Emacs; see the file COPYING.  If not, write to the
  28 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  29 ;; Boston, MA 02111-1307, USA.
  30 ;;
  31
  32 ;;; Commentary:
  33 ;;
  34 ;; Origin of IMAP parser part is imap.el, included in Gnus.
  35 ;;
  36 ;;    Copyright (C) 1998, 1999, 2000
  37 ;;    Free Software Foundation, Inc.
  38 ;;    Author: Simon Josefsson <jas@pdc.kth.se>
  39 ;;
  40
  41 (require 'elmo-vars)
  42 (require 'elmo-util)
  43 (require 'elmo-date)
  44 (require 'elmo-msgdb)
  45 (require 'elmo-cache)
  46 (require 'elmo)
  47 (require 'elmo-net)
  48 (require 'utf7)
  49 (require 'elmo-mime)
  50
  51 ;;; Code:
  52 (eval-when-compile (require 'cl))
  53
  54 (defvar elmo-imap4-disuse-server-flag-mailbox-regexp "^#mh" ; UW imapd
  55   "Regexp to match IMAP4 mailbox names whose message flags on server should be ignored.
  56 (Except `\\Deleted' flag).")
  57
  58 (defvar elmo-imap4-overview-fetch-chop-length 200
  59   "*Number of overviews to fetch in one request.")
  60
  61 ;; c.f. rfc2683 3.2.1.5 Long Command Lines
  62 ;;
  63 ;; "A client should limit the length of the command lines it generates
  64 ;;  to approximately 1000 octets (including all quoted strings but not
  65 ;;  including literals). If the client is unable to group things into
  66 ;;  ranges so that the command line is within that length, it should
  67 ;;  split the request into multiple commands. The client should use
  68 ;;  literals instead of long quoted strings, in order to keep the command
  69 ;;  length down.
  70 ;;  For its part, a server should allow for a command line of at least
  71 ;;  8000 octets. This provides plenty of leeway for accepting reasonable
  72 ;;  length commands from clients. The server should send a BAD response
  73 ;;  to a command that does not end within the server's maximum accepted
  74 ;;  command length. "
  75
  76 ;; To limit command line length, chop number set.
  77 (defvar elmo-imap4-number-set-chop-length 1000
  78   "*Number of messages to specify as a number-set argument for one request.")
  79
  80 (defvar elmo-imap4-force-login nil
  81   "*Non-nil forces to try 'login' if there is no 'auth' capability in imapd.")
  82
  83 (defvar elmo-imap4-use-select-to-update-status nil
  84   "*Some imapd have to send select command to update status.
  85 (ex. UW imapd 4.5-BETA?).  For these imapd, you must set this variable t.")
  86
  87 (defvar elmo-imap4-use-modified-utf7 nil
  88   "*Use mofidied UTF-7 (rfc2060) encoding for IMAP4 folder name.")
  89
  90 (defvar elmo-imap4-use-cache t
  91   "Use cache in imap4 folder.")
  92
  93 (defvar elmo-imap4-extra-namespace-alist
  94   '(("^\\({.*/nntp}\\).*$" . ".")) ; Default is for UW's remote nntp mailbox...
  95   "Extra namespace alist.
  96 A list of cons cell like: (REGEXP . DELIMITER).
  97 REGEXP should have a grouping for namespace prefix.")
  98 ;;
  99 ;;; internal variables
 100 ;;
 101 (defvar elmo-imap4-seq-prefix "elmo-imap4")
 102 (defvar elmo-imap4-seqno 0)
 103 (defvar elmo-imap4-use-uid t
 104   "Use UID as message number.")
 105
 106 (defvar elmo-imap4-current-response nil)
 107 (defvar elmo-imap4-status nil)
 108 (defvar elmo-imap4-reached-tag "elmo-imap40")
 109
 110 ;;; buffer local variables
 111 (defvar elmo-imap4-default-hierarchy-delimiter "/")
 112
 113 (defvar elmo-imap4-server-capability nil)
 114 (defvar elmo-imap4-server-namespace nil)
 115
 116 (defvar elmo-imap4-parsing nil) ; indicates parsing.
 117
 118 (defvar elmo-imap4-fetch-callback nil)
 119 (defvar elmo-imap4-fetch-callback-data nil)
 120 (defvar elmo-imap4-status-callback nil)
 121 (defvar elmo-imap4-status-callback-data nil)
 122
 123 (defvar elmo-imap4-server-diff-async-callback nil)
 124 (defvar elmo-imap4-server-diff-async-callback-data nil)
 125
 126 ;;; progress...(no use?)
 127 (defvar elmo-imap4-count-progress nil)
 128 (defvar elmo-imap4-count-progress-message nil)
 129 (defvar elmo-imap4-progress-count nil)
 130
 131 ;;; XXX Temporal implementation
 132 (defvar elmo-imap4-current-msgdb nil)
 133 (defvar elmo-imap4-seen-messages nil)
 134
 135 (defvar elmo-imap4-local-variables
 136   '(elmo-imap4-status
 137     elmo-imap4-current-response
 138     elmo-imap4-seqno
 139     elmo-imap4-parsing
 140     elmo-imap4-reached-tag
 141     elmo-imap4-count-progress
 142     elmo-imap4-count-progress-message
 143     elmo-imap4-progress-count
 144     elmo-imap4-fetch-callback
 145     elmo-imap4-fetch-callback-data
 146     elmo-imap4-status-callback
 147     elmo-imap4-status-callback-data
 148     elmo-imap4-current-msgdb
 149     elmo-imap4-seen-messages))
 150
 151 ;;;;
 152
 153 (defconst elmo-imap4-quoted-specials-list '(?\\ ?\"))
 154
 155 (defconst elmo-imap4-non-atom-char-regex
 156   (eval-when-compile
 157     (concat "[^" "]!#$&'+,./0-9:;<=>?@A-Z[^_`a-z|}~-" "]")))
 158
 159 (defconst elmo-imap4-non-text-char-regex
 160   (eval-when-compile
 161     (concat "[^"
 162             "]\x01-\x09\x0b\x0c\x0e-\x1f\x7f !\"#$%&'()*+,./0-9:;<=>?@A-Z[\\^_`a-z{|}~-"
 163             "]")))
 164
 165 (defconst elmo-imap4-literal-threshold 1024
 166  "Limitation of characters that can be used in a quoted string.")
 167
 168 ;; For debugging.
 169 (defvar elmo-imap4-debug nil
 170   "Non-nil forces IMAP4 folder as debug mode.
 171 Debug information is inserted in the buffer \"*IMAP4 DEBUG*\"")
 172
 173 (defvar elmo-imap4-debug-inhibit-logging nil)
 174
 175 ;;; ELMO IMAP4 folder
 176 (eval-and-compile
 177   (luna-define-class elmo-imap4-folder (elmo-net-folder)
 178                      (mailbox))
 179   (luna-define-internal-accessors 'elmo-imap4-folder))
 180
 181 ;;; Session
 182 (eval-and-compile
 183   (luna-define-class elmo-imap4-session (elmo-network-session)
 184                      (capability current-mailbox read-only))
 185   (luna-define-internal-accessors 'elmo-imap4-session))
 186
 187 ;;; MIME-ELMO-IMAP Location
 188 (eval-and-compile
 189   (luna-define-class mime-elmo-imap-location
 190                      (mime-imap-location)
 191                      (folder number rawbuf strategy))
 192   (luna-define-internal-accessors 'mime-elmo-imap-location))
 193
 194 ;;; Debug
 195 (defsubst elmo-imap4-debug (message &rest args)
 196   (if elmo-imap4-debug
 197       (with-current-buffer (get-buffer-create "*IMAP4 DEBUG*")
 198         (goto-char (point-max))
 199         (if elmo-imap4-debug-inhibit-logging
 200             (insert "NO LOGGING\n")
 201           (insert (apply 'format message args) "\n")))))
 202
 203 (defsubst elmo-imap4-decode-folder-string (string)
 204   (if elmo-imap4-use-modified-utf7
 205       (utf7-decode-string string 'imap)
 206     string))
 207
 208 (defsubst elmo-imap4-encode-folder-string (string)
 209   (if elmo-imap4-use-modified-utf7
 210       (utf7-encode-string string 'imap)
 211     string))
 212
 213 ;;; Response
 214
 215 (defmacro elmo-imap4-response-continue-req-p (response)
 216   "Returns non-nil if RESPONSE is '+' response."
 217   (` (assq 'continue-req (, response))))
 218
 219 (defmacro elmo-imap4-response-ok-p (response)
 220   "Returns non-nil if RESPONSE is an 'OK' response."
 221   (` (assq 'ok (, response))))
 222
 223 (defmacro elmo-imap4-response-bye-p (response)
 224   "Returns non-nil if RESPONSE is an 'BYE' response."
 225   (` (assq 'bye (, response))))
 226
 227 (defmacro elmo-imap4-response-value (response symbol)
 228   "Get value of the SYMBOL from RESPONSE."
 229   (` (nth 1 (assq (, symbol) (, response)))))
 230
 231 (defsubst elmo-imap4-response-value-all (response symbol)
 232   "Get all value of the SYMBOL from RESPONSE."
 233   (let (matched)
 234     (while response
 235       (if (eq (car (car response)) symbol)
 236           (setq matched (nconc matched (nth 1 (car response)))))
 237       (setq response (cdr response)))
 238     matched))
 239
 240 (defmacro elmo-imap4-response-error-text (response)
 241   "Returns text of NO, BAD, BYE response."
 242   (` (nth 1 (or (elmo-imap4-response-value (, response) 'no)
 243                 (elmo-imap4-response-value (, response) 'bad)
 244                 (elmo-imap4-response-value (, response) 'bye)))))
 245
 246 (defmacro elmo-imap4-response-bodydetail-text (response)
 247   "Returns text of BODY[section]<partial>."
 248   (` (nth 3 (assq 'bodydetail (, response)))))
 249
 250 ;;; Session commands.
 251
 252 ; (defun elmo-imap4-send-command-wait (session command)
 253 ;   "Send COMMAND to the SESSION and wait for response.
 254 ; Returns RESPONSE (parsed lisp object) of IMAP session."
 255 ;   (elmo-imap4-read-response session
 256 ;                           (elmo-imap4-send-command
 257 ;                            session
 258 ;                            command)))
 259
 260 (defun elmo-imap4-send-command-wait (session command)
 261   "Send COMMAND to the SESSION.
 262 Returns RESPONSE (parsed lisp object) of IMAP session.
 263 If response is not `OK', causes error with IMAP response text."
 264   (elmo-imap4-accept-ok session
 265                         (elmo-imap4-send-command
 266                          session
 267                          command)))
 268
 269 (defun elmo-imap4-send-command (session command)
 270   "Send COMMAND to the SESSION.
 271 Returns a TAG string which is assigned to the COMMAND."
 272   (let* ((command-args (if (listp command)
 273                            command
 274                          (list command)))
 275          (process (elmo-network-session-process-internal session))
 276          cmdstr tag token kind)
 277     (with-current-buffer (process-buffer process)
 278       (setq tag (concat elmo-imap4-seq-prefix
 279                         (number-to-string
 280                          (setq elmo-imap4-seqno (+ 1 elmo-imap4-seqno)))))
 281       (setq cmdstr (concat tag " "))
 282       ;; (erase-buffer) No need.
 283       (goto-char (point-min))
 284       (when (elmo-imap4-response-bye-p elmo-imap4-current-response)
 285         (elmo-imap4-process-bye session))
 286       (setq elmo-imap4-current-response nil)
 287       (if elmo-imap4-parsing
 288           (error "IMAP process is running. Please wait (or plug again)"))
 289       (setq elmo-imap4-parsing t)
 290       (elmo-imap4-debug "<-(%s)- %s" tag command)
 291       (while (setq token (car command-args))
 292         (cond ((stringp token)   ; formatted
 293                (setq cmdstr (concat cmdstr token)))
 294               ((listp token)     ; unformatted
 295                (setq kind (car token))
 296                (cond ((eq kind 'atom)
 297                       (setq cmdstr (concat cmdstr (nth 1 token))))
 298                      ((eq kind 'quoted)
 299                       (setq cmdstr (concat
 300                                     cmdstr
 301                                     (elmo-imap4-format-quoted (nth 1 token)))))
 302                      ((eq kind 'literal)
 303                       (setq cmdstr (concat cmdstr
 304                                            (format "{%d}" (nth 2 token))))
 305                       (process-send-string process cmdstr)
 306                       (process-send-string process "\r\n")
 307                       (setq cmdstr nil)
 308                       (elmo-imap4-accept-continue-req session)
 309                       (cond ((stringp (nth 1 token))
 310                              (setq cmdstr (nth 1 token)))
 311                             ((bufferp (nth 1 token))
 312                              (with-current-buffer (nth 1 token)
 313                                (process-send-region
 314                                 process
 315                                 (point-min)
 316                                 (+ (point-min) (nth 2 token)))))
 317                             (t
 318                              (error "Wrong argument for literal"))))
 319                      (t
 320                       (error "Unknown token kind %s" kind))))
 321               (t
 322                (error "Invalid argument")))
 323         (setq command-args (cdr command-args)))
 324       (if cmdstr
 325           (process-send-string process cmdstr))
 326       (process-send-string process "\r\n")
 327       tag)))
 328
 329 (defun elmo-imap4-send-string (session string)
 330   "Send STRING to the SESSION."
 331   (with-current-buffer (process-buffer
 332                         (elmo-network-session-process-internal session))
 333     (setq elmo-imap4-current-response nil)
 334     (goto-char (point-min))
 335     (elmo-imap4-debug "<-- %s" string)
 336     (process-send-string (elmo-network-session-process-internal session)
 337                          string)
 338     (process-send-string (elmo-network-session-process-internal session)
 339                          "\r\n")))
 340
 341 (defun elmo-imap4-read-response (session tag)
 342   "Read parsed response from SESSION.
 343 TAG is the tag of the command"
 344   (with-current-buffer (process-buffer
 345                         (elmo-network-session-process-internal session))
 346     (while (not (or (string= tag elmo-imap4-reached-tag)
 347                     (elmo-imap4-response-bye-p elmo-imap4-current-response)))
 348       (when (memq (process-status
 349                    (elmo-network-session-process-internal session))
 350                   '(open run))
 351         (accept-process-output (elmo-network-session-process-internal session)
 352                                1)))
 353     (elmo-imap4-debug "=>%s" (prin1-to-string elmo-imap4-current-response))
 354     (setq elmo-imap4-parsing nil)
 355     elmo-imap4-current-response))
 356
 357 (defsubst elmo-imap4-read-untagged (process)
 358   (with-current-buffer (process-buffer process)
 359     (while (not elmo-imap4-current-response)
 360       (accept-process-output process 1))
 361     (elmo-imap4-debug "=>%s" (prin1-to-string elmo-imap4-current-response))
 362     elmo-imap4-current-response))
 363
 364 (defun elmo-imap4-read-continue-req (session)
 365   "Returns a text following to continue-req in SESSION.
 366 If response is not `+' response, returns nil."
 367   (elmo-imap4-response-value
 368    (elmo-imap4-read-untagged
 369     (elmo-network-session-process-internal session))
 370    'continue-req))
 371
 372 (defun elmo-imap4-process-bye (session)
 373   (with-current-buffer (elmo-network-session-buffer session)
 374     (let ((r elmo-imap4-current-response))
 375       (setq elmo-imap4-current-response nil)
 376       (elmo-network-close-session session)
 377       (signal 'elmo-imap4-bye-error
 378               (list (concat (elmo-imap4-response-error-text r))
 379                     "Try Again")))))
 380
 381 (defun elmo-imap4-accept-continue-req (session)
 382   "Returns non-nil if `+' (continue-req) response is arrived in SESSION.
 383 If response is not `+' response, cause an error."
 384   (let (response)
 385     (setq response
 386           (elmo-imap4-read-untagged
 387            (elmo-network-session-process-internal session)))
 388     (or (elmo-imap4-response-continue-req-p response)
 389         (error "IMAP error: %s"
 390                (or (elmo-imap4-response-error-text response)
 391                    "No continut-req from server.")))))
 392
 393 (defun elmo-imap4-read-ok (session tag)
 394   "Returns non-nil if `OK' response of the command with TAG is arrived
 395 in SESSION. If response is not `OK' response, returns nil."
 396   (elmo-imap4-response-ok-p
 397    (elmo-imap4-read-response session tag)))
 398
 399 (defun elmo-imap4-accept-ok (session tag)
 400   "Accept only `OK' response from SESSION.
 401 If response is not `OK' response, causes error with IMAP response text."
 402   (let ((response (elmo-imap4-read-response session tag)))
 403     (if (elmo-imap4-response-ok-p response)
 404         response
 405       (if (elmo-imap4-response-bye-p response)
 406           (elmo-imap4-process-bye session)
 407         (error "IMAP error: %s"
 408                (or (elmo-imap4-response-error-text response)
 409                    "No `OK' response from server."))))))
 410
 411 ;;; MIME-ELMO-IMAP Location
 412 (luna-define-method mime-imap-location-section-body ((location
 413                                                       mime-elmo-imap-location)
 414                                                      section)
 415   (if (and (stringp section)
 416            (string= section "HEADER"))
 417       ;; Even in the section mode, header fields should be saved to the
 418       ;; raw buffer .
 419       (with-current-buffer (mime-elmo-imap-location-rawbuf-internal location)
 420         (erase-buffer)
 421         (elmo-message-fetch
 422          (mime-elmo-imap-location-folder-internal location)
 423          (mime-elmo-imap-location-number-internal location)
 424          (mime-elmo-imap-location-strategy-internal location)
 425          section
 426          (current-buffer)
 427          'unseen)
 428         (buffer-string))
 429     (elmo-message-fetch
 430      (mime-elmo-imap-location-folder-internal location)
 431      (mime-elmo-imap-location-number-internal location)
 432      (mime-elmo-imap-location-strategy-internal location)
 433      section
 434      nil 'unseen)))
 435
 436
 437 (luna-define-method mime-imap-location-bodystructure
 438   ((location mime-elmo-imap-location))
 439   (elmo-imap4-fetch-bodystructure
 440    (mime-elmo-imap-location-folder-internal location)
 441    (mime-elmo-imap-location-number-internal location)
 442    (mime-elmo-imap-location-strategy-internal location)))
 443
 444 (luna-define-method mime-imap-location-fetch-entity-p
 445   ((location mime-elmo-imap-location) entity)
 446   (or (not elmo-message-displaying) ; Fetching entity to save or force display.
 447       ;; cache exists
 448       (file-exists-p
 449        (expand-file-name
 450         (mmimap-entity-section (mime-entity-node-id-internal entity))
 451         (elmo-fetch-strategy-cache-path
 452          (mime-elmo-imap-location-strategy-internal location))))
 453       ;; not too large to fetch.
 454       (> elmo-message-fetch-threshold
 455          (or (mime-imap-entity-size-internal entity) 0))))
 456
 457 ;;;
 458
 459 (defun elmo-imap4-session-check (session)
 460   (with-current-buffer (elmo-network-session-buffer session)
 461     (setq elmo-imap4-fetch-callback nil)
 462     (setq elmo-imap4-fetch-callback-data nil))
 463   (elmo-imap4-send-command-wait session "check"))
 464
 465 (defun elmo-imap4-atom-p (string)
 466   "Return t if STRING is an atom defined in rfc2060."
 467   (if (string= string "")
 468       nil
 469     (save-match-data
 470       (not (string-match elmo-imap4-non-atom-char-regex string)))))
 471
 472 (defun elmo-imap4-quotable-p (string)
 473   "Return t if STRING can be formatted as a quoted defined in rfc2060."
 474   (save-match-data
 475     (not (string-match elmo-imap4-non-text-char-regex string))))
 476
 477 (defun elmo-imap4-nil (string)
 478   "Return a list represents the special atom \"NIL\" defined in rfc2060, \
 479 if STRING is nil.
 480 Otherwise return nil."
 481   (if (eq string nil)
 482       (list 'atom "NIL")))
 483
 484 (defun elmo-imap4-atom (string)
 485   "Return a list represents STRING as an atom defined in rfc2060.
 486 Return nil if STRING is not an atom.  See `elmo-imap4-atom-p'."
 487   (if (elmo-imap4-atom-p string)
 488       (list 'atom string)))
 489
 490 (defun elmo-imap4-quoted (string)
 491   "Return a list represents STRING as a quoted defined in rfc2060.
 492 Return nil if STRING can not be formatted as a quoted.  See `elmo-imap4-quotable-p'."
 493   (if (elmo-imap4-quotable-p string)
 494       (list 'quoted string)))
 495
 496 (defun elmo-imap4-literal-1 (string-or-buffer length)
 497   "Internal function for `elmo-imap4-literal' and `elmo-imap4-buffer-literal'.
 498 Return a list represents STRING-OR-BUFFER as a literal defined in rfc2060.
 499 STRING-OR-BUFFER must be an encoded string or a single-byte string or a single-byte buffer.
 500 LENGTH must be the number of octets for STRING-OR-BUFFER."
 501   (list 'literal string-or-buffer length))
 502
 503 (defun elmo-imap4-literal (string)
 504   "Return a list represents STRING as a literal defined in rfc2060.
 505 STRING must be an encoded or a single-byte string."
 506   (elmo-imap4-literal-1 string (length string)))
 507
 508 (defun elmo-imap4-buffer-literal (buffer)
 509   "Return a list represents BUFFER as a literal defined in rfc2060.
 510 BUFFER must be a single-byte buffer."
 511   (elmo-imap4-literal-1 buffer (with-current-buffer buffer
 512                                  (buffer-size))))
 513
 514 (defun elmo-imap4-string-1 (string length)
 515   "Internal function for `elmo-imap4-string' and `elmo-imap4-buffer-string'.
 516 Return a list represents STRING as a string defined in rfc2060.
 517 STRING must be an encoded or a single-byte string.
 518 LENGTH must be the number of octets for STRING."
 519   (or (elmo-imap4-quoted string)
 520       (elmo-imap4-literal-1 string length)))
 521
 522 (defun elmo-imap4-string (string)
 523   "Return a list represents STRING as a string defined in rfc2060.
 524 STRING must be an encoded or a single-byte string."
 525   (let ((length (length string)))
 526     (if (< elmo-imap4-literal-threshold length)
 527         (elmo-imap4-literal-1 string length)
 528       (elmo-imap4-string-1 string length))))
 529
 530 (defun elmo-imap4-buffer-string (buffer)
 531   "Return a list represents BUFFER as a string defined in rfc2060.
 532 BUFFER must be a single-byte buffer."
 533   (let ((length (with-current-buffer buffer
 534                   (buffer-size))))
 535     (if (< elmo-imap4-literal-threshold length)
 536         (elmo-imap4-literal-1 buffer length)
 537       (elmo-imap4-string-1 (with-current-buffer buffer
 538                              (buffer-string))
 539                            length))))
 540
 541 (defun elmo-imap4-astring-1 (string length)
 542   "Internal function for `elmo-imap4-astring' and `elmo-imap4-buffer-astring'.
 543 Return a list represents STRING as an astring defined in rfc2060.
 544 STRING must be an encoded or a single-byte string.
 545 LENGTH must be the number of octets for STRING."
 546   (or (elmo-imap4-atom string)
 547       (elmo-imap4-string-1 string length)))
 548
 549 (defun elmo-imap4-astring (string)
 550   "Return a list represents STRING as an astring defined in rfc2060.
 551 STRING must be an encoded or a single-byte string."
 552   (let ((length (length string)))
 553     (if (< elmo-imap4-literal-threshold length)
 554         (elmo-imap4-literal-1 string length)
 555       (elmo-imap4-astring-1 string length))))
 556
 557 (defun elmo-imap4-buffer-astring (buffer)
 558   "Return a list represents BUFFER as an astring defined in rfc2060.
 559 BUFFER must be a single-byte buffer."
 560   (let ((length (with-current-buffer buffer
 561                   (buffer-size))))
 562     (if (< elmo-imap4-literal-threshold length)
 563         (elmo-imap4-literal-1 buffer length)
 564       (elmo-imap4-astring-1 (with-current-buffer buffer
 565                               (buffer-string))
 566                             length))))
 567
 568 (defun elmo-imap4-nstring (string)
 569   "Return a list represents STRING as a nstring defined in rfc2060.
 570 STRING must be an encoded or a single-byte string."
 571    (or (elmo-imap4-nil string)
 572        (elmo-imap4-string string)))
 573
 574 (defun elmo-imap4-buffer-nstring (buffer)
 575   "Return a list represents BUFFER as a nstring defined in rfc2060.
 576 BUFFER must be a single-byte buffer."
 577    (or (elmo-imap4-nil buffer)
 578        (elmo-imap4-buffer-string buffer)))
 579
 580 (defalias 'elmo-imap4-mailbox 'elmo-imap4-astring)
 581 (defalias 'elmo-imap4-field-body 'elmo-imap4-astring)
 582 (defalias 'elmo-imap4-userid 'elmo-imap4-astring)
 583 (defalias 'elmo-imap4-password 'elmo-imap4-astring)
 584
 585 (defun elmo-imap4-format-quoted (string)
 586   "Return STRING in a form of the quoted-string defined in rfc2060."
 587   (concat "\""
 588           (std11-wrap-as-quoted-pairs string elmo-imap4-quoted-specials-list)
 589           "\""))
 590
 591 (defsubst elmo-imap4-response-get-selectable-mailbox-list (response)
 592   (delq nil
 593         (mapcar
 594          (lambda (entry)
 595            (if (and (eq 'list (car entry))
 596                     (not (member "\\NoSelect" (nth 1 (nth 1 entry)))))
 597                (car (nth 1 entry))))
 598          response)))
 599
 600 (defun elmo-imap4-fetch-bodystructure (folder number strategy)
 601   "Fetch BODYSTRUCTURE for the message in the FOLDER with NUMBER using STRATEGY."
 602   (if (elmo-fetch-strategy-use-cache strategy)
 603       (elmo-object-load
 604        (elmo-file-cache-expand-path
 605         (elmo-fetch-strategy-cache-path strategy)
 606         "bodystructure"))
 607     (let ((session (elmo-imap4-get-session folder))
 608           bodystructure)
 609       (elmo-imap4-session-select-mailbox
 610        session
 611        (elmo-imap4-folder-mailbox-internal folder))
 612       (with-current-buffer (elmo-network-session-buffer session)
 613         (setq elmo-imap4-fetch-callback nil)
 614         (setq elmo-imap4-fetch-callback-data nil))
 615       (prog1 (setq bodystructure
 616                    (elmo-imap4-response-value
 617                     (elmo-imap4-response-value
 618                      (elmo-imap4-send-command-wait
 619                       session
 620                       (format
 621                        (if elmo-imap4-use-uid
 622                            "uid fetch %s bodystructure"
 623                          "fetch %s bodystructure")
 624                        number))
 625                      'fetch)
 626                     'bodystructure))
 627         (when (elmo-fetch-strategy-save-cache strategy)
 628           (elmo-file-cache-delete
 629            (elmo-fetch-strategy-cache-path strategy))
 630           (elmo-object-save
 631            (elmo-file-cache-expand-path
 632             (elmo-fetch-strategy-cache-path strategy)
 633             "bodystructure")
 634            bodystructure))))))
 635
 636 ;;; Backend methods.
 637 (luna-define-method elmo-create-folder-plugged ((folder elmo-imap4-folder))
 638   (elmo-imap4-send-command-wait
 639    (elmo-imap4-get-session folder)
 640    (list "create " (elmo-imap4-mailbox
 641                     (elmo-imap4-folder-mailbox-internal folder)))))
 642
 643 (defun elmo-imap4-get-session (folder &optional if-exists)
 644   (elmo-network-get-session 'elmo-imap4-session
 645                             (concat
 646                              (if (elmo-folder-biff-internal folder)
 647                                  "BIFF-")
 648                              "IMAP")
 649                             folder if-exists))
 650
 651 (defun elmo-imap4-session-select-mailbox (session mailbox
 652                                                   &optional force no-error)
 653   "Select MAILBOX in SESSION.
 654 If optional argument FORCE is non-nil, select mailbox even if current mailbox
 655 is same as MAILBOX.
 656 If second optional argument NO-ERROR is non-nil, don't cause an error when
 657 selecting folder was failed.
 658 If NO-ERROR is 'notify-bye, only BYE response is reported as error.
 659 Returns response value if selecting folder succeed. "
 660   (when (or force
 661             (not (string=
 662                   (elmo-imap4-session-current-mailbox-internal session)
 663                   mailbox)))
 664     (let (response result)
 665       (unwind-protect
 666           (setq response
 667                 (elmo-imap4-read-response
 668                  session
 669                  (elmo-imap4-send-command
 670                   session
 671                   (list
 672                    "select "
 673                    (elmo-imap4-mailbox mailbox)))))
 674         (if (setq result (elmo-imap4-response-ok-p response))
 675             (progn
 676               (elmo-imap4-session-set-current-mailbox-internal session mailbox)
 677               (elmo-imap4-session-set-read-only-internal
 678                session
 679                (nth 1 (assq 'read-only (assq 'ok response)))))
 680           (elmo-imap4-session-set-current-mailbox-internal session nil)
 681           (if (and (eq no-error 'notify-bye)
 682                    (elmo-imap4-response-bye-p response))
 683               (elmo-imap4-process-bye session)
 684             (unless no-error
 685               (error (or
 686                       (elmo-imap4-response-error-text response)
 687                       (format "Select %s failed" mailbox)))))))
 688       (and result response))))
 689
 690 (defun elmo-imap4-check-validity (spec validity-file)
 691 ;;; Not used.
 692 ;;;(elmo-imap4-send-command-wait
 693 ;;;(elmo-imap4-get-session spec)
 694 ;;;(list "status "
 695 ;;;      (elmo-imap4-mailbox
 696 ;;;       (elmo-imap4-spec-mailbox spec))
 697 ;;;      " (uidvalidity)")))
 698   )
 699
 700 (defun elmo-imap4-sync-validity  (spec validity-file)
 701   ;; Not used.
 702   )
 703
 704 (defun elmo-imap4-list (folder flag)
 705   (let ((session (elmo-imap4-get-session folder)))
 706     (elmo-imap4-session-select-mailbox
 707      session
 708      (elmo-imap4-folder-mailbox-internal folder))
 709     (elmo-imap4-response-value
 710      (elmo-imap4-send-command-wait
 711       session
 712       (format (if elmo-imap4-use-uid "uid search %s"
 713                 "search %s") flag))
 714      'search)))
 715
 716 (static-cond
 717  ((fboundp 'float)
 718   ;; Emacs can parse dot symbol.
 719   (defvar elmo-imap4-rfc822-size "RFC822\.SIZE")
 720   (defvar elmo-imap4-rfc822-text "RFC822\.TEXT")
 721   (defvar elmo-imap4-rfc822-header "RFC822\.HEADER")
 722   (defvar elmo-imap4-rfc822-size "RFC822\.SIZE")
 723   (defvar elmo-imap4-header-fields "HEADER\.FIELDS")
 724   (defmacro elmo-imap4-replace-dot-symbols ()) ;; noop
 725   (defalias 'elmo-imap4-fetch-read 'read)
 726   )
 727  (t
 728   ;;; For Nemacs.
 729   ;; Cannot parse dot symbol.
 730   (defvar elmo-imap4-rfc822-size "RFC822_SIZE")
 731   (defvar elmo-imap4-header-fields "HEADER_FIELDS")
 732   (defvar elmo-imap4-rfc822-size "RFC822_SIZE")
 733   (defvar elmo-imap4-rfc822-text "RFC822_TEXT")
 734   (defvar elmo-imap4-rfc822-header "RFC822_HEADER")
 735   (defvar elmo-imap4-header-fields "HEADER_FIELDS")
 736   (defun elmo-imap4-fetch-read (buffer)
 737     (with-current-buffer buffer
 738       (let ((beg (point))
 739             token)
 740         (when (re-search-forward "[[ ]" nil t)
 741           (goto-char (match-beginning 0))
 742           (setq token (buffer-substring beg (point)))
 743           (cond ((string= token "RFC822.SIZE")
 744                  (intern elmo-imap4-rfc822-size))
 745                 ((string= token "RFC822.HEADER")
 746                  (intern elmo-imap4-rfc822-header))
 747                 ((string= token "RFC822.TEXT")
 748                  (intern elmo-imap4-rfc822-text))
 749                 ((string= token "HEADER\.FIELDS")
 750                  (intern elmo-imap4-header-fields))
 751                 (t (goto-char beg)
 752                    (elmo-read (current-buffer))))))))))
 753
 754 (defun elmo-imap4-make-number-set-list (msg-list &optional chop-length)
 755   "Make RFC2060's message set specifier from MSG-LIST.
 756 Returns a list of (NUMBER . SET-STRING).
 757 SET-STRING is the message set specifier described in RFC2060.
 758 NUMBER is contained message number in SET-STRING.
 759 Every SET-STRING does not contain number of messages longer than CHOP-LENGTH.
 760 If CHOP-LENGTH is not specified, message set is not chopped."
 761   (let (count cont-list set-list)
 762     (setq msg-list (sort (copy-sequence msg-list) '<))
 763     (while msg-list
 764       (setq cont-list nil)
 765       (setq count 0)
 766       (unless chop-length
 767         (setq chop-length (length msg-list)))
 768       (while (and (not (null msg-list))
 769                   (< count chop-length))
 770         (setq cont-list
 771               (elmo-number-set-append
 772                cont-list (car msg-list)))
 773         (incf count)
 774         (setq msg-list (cdr msg-list)))
 775       (setq set-list
 776             (cons
 777              (cons
 778               count
 779               (mapconcat
 780                (lambda (x)
 781                  (cond ((consp x)
 782                         (format "%s:%s" (car x) (cdr x)))
 783                        ((integerp x)
 784                         (int-to-string x))))
 785                cont-list
 786                ","))
 787              set-list)))
 788     (nreverse set-list)))
 789
 790 ;;
 791 ;; app-data:
 792 ;; cons of list
 793 ;; 0: new-mark 1: already-mark 2: seen-mark 3: important-mark
 794 ;; 4: seen-list
 795 ;; and result of use-flag-p.
 796 (defsubst elmo-imap4-fetch-callback-1-subr (entity flags app-data)
 797   "A msgdb entity callback function."
 798   (let* ((use-flag (cdr app-data))
 799          (app-data (car app-data))
 800          (seen (member (car entity) (nth 4 app-data)))
 801          mark)
 802     (if (member "\\Flagged" flags)
 803         (elmo-msgdb-global-mark-set (car entity) (nth 3 app-data)))
 804     (if (setq mark (elmo-msgdb-global-mark-get (car entity)))
 805         (unless (member "\\Seen" flags)
 806           (setq elmo-imap4-seen-messages
 807                 (cons
 808                  (elmo-msgdb-overview-entity-get-number entity)
 809                  elmo-imap4-seen-messages)))
 810       (setq mark (or (if (elmo-file-cache-status
 811                           (elmo-file-cache-get (car entity)))
 812                          (if (or seen
 813                                  (and use-flag
 814                                       (member "\\Seen" flags)))
 815                              nil
 816                            (nth 1 app-data))
 817                        (if (or seen
 818                                (and use-flag
 819                                     (member "\\Seen" flags)))
 820                            (if elmo-imap4-use-cache
 821                                (nth 2 app-data))
 822                          (nth 0 app-data))))))
 823     (setq elmo-imap4-current-msgdb
 824           (elmo-msgdb-append
 825            elmo-imap4-current-msgdb
 826            (list (list entity)
 827                  (list (cons (elmo-msgdb-overview-entity-get-number entity)
 828                              (car entity)))
 829                  (if mark
 830                      (list
 831                       (list (elmo-msgdb-overview-entity-get-number entity)
 832                             mark))))))))
 833
 834 ;; Current buffer is process buffer.
 835 (defun elmo-imap4-fetch-callback-1 (element app-data)
 836   (elmo-imap4-fetch-callback-1-subr
 837    (with-temp-buffer
 838      (insert (or (elmo-imap4-response-bodydetail-text element)
 839                  ""))
 840      ;; Delete CR.
 841      (goto-char (point-min))
 842      (while (search-forward "\r\n" nil t)
 843        (replace-match "\n"))
 844      (elmo-msgdb-create-overview-from-buffer
 845       (elmo-imap4-response-value element 'uid)
 846       (elmo-imap4-response-value element 'rfc822size)))
 847    (elmo-imap4-response-value element 'flags)
 848    app-data))
 849
 850 (defun elmo-imap4-parse-capability (string)
 851   (if (string-match "^\\*\\(.*\\)$" string)
 852       (elmo-read
 853        (concat "(" (downcase (elmo-match-string 1 string)) ")"))))
 854
 855 (defun elmo-imap4-clear-login (session)
 856   (let ((elmo-imap4-debug-inhibit-logging t))
 857     (or
 858      (elmo-imap4-read-ok
 859       session
 860       (elmo-imap4-send-command
 861        session
 862        (list "login "
 863              (elmo-imap4-userid (elmo-network-session-user-internal session))
 864              " "
 865              (elmo-imap4-password
 866               (elmo-get-passwd (elmo-network-session-password-key session))))))
 867      (signal 'elmo-authenticate-error '(elmo-imap4-clear-login)))))
 868
 869 (defun elmo-imap4-auth-login (session)
 870   (let ((tag (elmo-imap4-send-command session "authenticate login"))
 871         (elmo-imap4-debug-inhibit-logging t))
 872     (or (elmo-imap4-read-continue-req session)
 873         (signal 'elmo-authenticate-error '(elmo-imap4-auth-login)))
 874     (elmo-imap4-send-string session
 875                             (elmo-base64-encode-string
 876                              (elmo-network-session-user-internal session)))
 877     (or (elmo-imap4-read-continue-req session)
 878         (signal 'elmo-authenticate-error '(elmo-imap4-auth-login)))
 879     (elmo-imap4-send-string session
 880                             (elmo-base64-encode-string
 881                              (elmo-get-passwd
 882                               (elmo-network-session-password-key session))))
 883     (or (elmo-imap4-read-ok session tag)
 884         (signal 'elmo-authenticate-error '(elmo-imap4-auth-login)))
 885     (setq elmo-imap4-status 'auth)))
 886
 887 (luna-define-method
 888   elmo-network-initialize-session-buffer :after ((session
 889                                                   elmo-imap4-session) buffer)
 890   (with-current-buffer buffer
 891     (mapcar 'make-variable-buffer-local elmo-imap4-local-variables)
 892     (setq elmo-imap4-seqno 0)
 893     (setq elmo-imap4-status 'initial)))
 894
 895 (luna-define-method elmo-network-initialize-session ((session
 896                                                       elmo-imap4-session))
 897   (let ((process (elmo-network-session-process-internal session)))
 898     (with-current-buffer (process-buffer process)
 899       ;; Skip garbage output from process before greeting.
 900       (while (and (memq (process-status process) '(open run))
 901                   (goto-char (point-max))
 902                   (forward-line -1)
 903                   (not (elmo-imap4-parse-greeting)))
 904         (accept-process-output process 1))
 905       (set-process-filter process 'elmo-imap4-arrival-filter)
 906       (set-process-sentinel process 'elmo-imap4-sentinel)
 907 ;;;   (while (and (memq (process-status process) '(open run))
 908 ;;;               (eq elmo-imap4-status 'initial))
 909 ;;;     (message "Waiting for server response...")
 910 ;;;     (accept-process-output process 1))
 911 ;;;   (message "")
 912       (unless (memq elmo-imap4-status '(nonauth auth))
 913         (signal 'elmo-open-error
 914                 (list 'elmo-network-initialize-session)))
 915       (elmo-imap4-session-set-capability-internal
 916        session
 917        (elmo-imap4-response-value
 918         (elmo-imap4-send-command-wait session "capability")
 919         'capability))
 920       (when (eq (elmo-network-stream-type-symbol
 921                  (elmo-network-session-stream-type-internal session))
 922                 'starttls)
 923         (or (memq 'starttls
 924                   (elmo-imap4-session-capability-internal session))
 925             (signal 'elmo-open-error
 926                     '(elmo-imap4-starttls-error)))
 927         (elmo-imap4-send-command-wait session "starttls")
 928         (starttls-negotiate process)))))
 929
 930 (luna-define-method elmo-network-authenticate-session ((session
 931                                                         elmo-imap4-session))
 932   (with-current-buffer (process-buffer
 933                         (elmo-network-session-process-internal session))
 934     (let* ((auth (elmo-network-session-auth-internal session))
 935            (auth (if (listp auth) auth (list auth))))
 936       (unless (or (eq elmo-imap4-status 'auth)
 937                   (null auth))
 938         (cond
 939          ((eq 'clear (car auth))
 940           (elmo-imap4-clear-login session))
 941          ((eq 'login (car auth))
 942           (elmo-imap4-auth-login session))
 943          (t
 944           (let* ((elmo-imap4-debug-inhibit-logging t)
 945                  (sasl-mechanisms
 946                   (delq nil
 947                         (mapcar
 948                          '(lambda (cap)
 949                             (if (string-match "^auth=\\(.*\\)$"
 950                                               (symbol-name cap))
 951                                 (match-string 1 (upcase (symbol-name cap)))))
 952                          (elmo-imap4-session-capability-internal session))))
 953                  (mechanism
 954                   (sasl-find-mechanism
 955                    (delq nil
 956                          (mapcar '(lambda (cap) (upcase (symbol-name cap)))
 957                                  (if (listp auth)
 958                                      auth
 959                                    (list auth)))))) ;)
 960                  client name step response tag
 961                  sasl-read-passphrase)
 962             (unless mechanism
 963               (if (or elmo-imap4-force-login
 964                       (y-or-n-p
 965                        (format
 966                         "There's no %s capability in server. continue?"
 967                         (elmo-list-to-string
 968                          (elmo-network-session-auth-internal session)))))
 969                   (setq mechanism (sasl-find-mechanism
 970                                    sasl-mechanisms))
 971                 (signal 'elmo-authenticate-error
 972                         '(elmo-imap4-auth-no-mechanisms))))
 973             (setq client
 974                   (sasl-make-client
 975                    mechanism
 976                    (elmo-network-session-user-internal session)
 977                    "imap"
 978                    (elmo-network-session-server-internal session)))
 979 ;;;         (if elmo-imap4-auth-user-realm
 980 ;;;             (sasl-client-set-property client 'realm elmo-imap4-auth-user-realm))
 981             (setq name (sasl-mechanism-name mechanism)
 982                   step (sasl-next-step client nil))
 983             (elmo-network-session-set-auth-internal
 984              session
 985              (intern (downcase name)))
 986             (setq sasl-read-passphrase
 987                   (function
 988                    (lambda (prompt)
 989                      (elmo-get-passwd
 990                       (elmo-network-session-password-key session)))))
 991             (setq tag
 992                   (elmo-imap4-send-command
 993                    session
 994                    (concat "AUTHENTICATE " name
 995                            (and (sasl-step-data step)
 996                                 (concat
 997                                  " "
 998                                  (elmo-base64-encode-string
 999                                   (sasl-step-data step)
1000                                   'no-lin-break))))))
1001             (catch 'done
1002               (while t
1003                 (setq response
1004                       (elmo-imap4-read-untagged
1005                        (elmo-network-session-process-internal session)))
1006                 (if (elmo-imap4-response-ok-p response)
1007                     (if (sasl-next-step client step)
1008                         ;; Bogus server?
1009                         (signal 'elmo-authenticate-error
1010                                 (list (intern
1011                                        (concat "elmo-imap4-auth-"
1012                                                (downcase name)))))
1013                       ;; The authentication process is finished.
1014                       (throw 'done nil)))
1015                 (unless (elmo-imap4-response-continue-req-p response)
1016                   ;; response is NO or BAD.
1017                   (signal 'elmo-authenticate-error
1018                           (list (intern
1019                                  (concat "elmo-imap4-auth-"
1020                                          (downcase name))))))
1021                 (sasl-step-set-data
1022                  step
1023                  (elmo-base64-decode-string
1024                   (elmo-imap4-response-value response 'continue-req)))
1025                 (setq step (sasl-next-step client step))
1026                 (setq tag
1027                       (elmo-imap4-send-string
1028                        session
1029                        (if (sasl-step-data step)
1030                            (elmo-base64-encode-string (sasl-step-data step)
1031                                                       'no-line-break)
1032                          ""))))))))))))
1033
1034 (luna-define-method elmo-network-setup-session ((session
1035                                                  elmo-imap4-session))
1036   (with-current-buffer (elmo-network-session-buffer session)
1037     (when (memq 'namespace (elmo-imap4-session-capability-internal session))
1038       (setq elmo-imap4-server-namespace
1039             (elmo-imap4-response-value
1040              (elmo-imap4-send-command-wait session "namespace")
1041              'namespace)))))
1042
1043 (defun elmo-imap4-setup-send-buffer (&optional string)
1044   (let ((send-buf (get-buffer-create " *elmo-imap4-setup-send-buffer*"))
1045         (source-buf (unless string (current-buffer))))
1046     (save-excursion
1047       (save-match-data
1048         (set-buffer send-buf)
1049         (erase-buffer)
1050         (elmo-set-buffer-multibyte nil)
1051         (if string
1052             (insert string)
1053           (with-current-buffer source-buf
1054             (copy-to-buffer send-buf (point-min) (point-max))))
1055         (goto-char (point-min))
1056         (if (eq (re-search-forward "^$" nil t)
1057                 (point-max))
1058             (insert "\n"))
1059         (goto-char (point-min))
1060         (while (search-forward "\n" nil t)
1061           (replace-match "\r\n"))))
1062     send-buf))
1063
1064 (defun elmo-imap4-setup-send-buffer-from-file (file)
1065   (let ((tmp-buf (get-buffer-create
1066                   " *elmo-imap4-setup-send-buffer-from-file*")))
1067     (save-excursion
1068       (save-match-data
1069         (set-buffer tmp-buf)
1070         (erase-buffer)
1071         (as-binary-input-file
1072          (insert-file-contents file))
1073         (goto-char (point-min))
1074         (if (eq (re-search-forward "^$" nil t)
1075                 (point-max))
1076             (insert "\n"))
1077         (goto-char (point-min))
1078         (while (search-forward "\n" nil t)
1079           (replace-match "\r\n"))))
1080     tmp-buf))
1081
1082 (luna-define-method elmo-delete-message-safe ((folder elmo-imap4-folder)
1083                                               number msgid)
1084   (let ((session (elmo-imap4-get-session folder))
1085         candidates)
1086     (elmo-imap4-session-select-mailbox
1087      session
1088      (elmo-imap4-folder-mailbox-internal folder))
1089     (setq candidates
1090           (elmo-imap4-response-value
1091            (elmo-imap4-send-command-wait session
1092                                          (list
1093                                           (if elmo-imap4-use-uid
1094                                               "uid search header message-id "
1095                                             "search header message-id ")
1096                                           (elmo-imap4-field-body msgid)))
1097            'search))
1098     (if (memq number candidates)
1099         (elmo-folder-delete-messages folder (list number)))))
1100
1101 (defun elmo-imap4-server-diff-async-callback-1 (status data)
1102   (funcall elmo-imap4-server-diff-async-callback
1103            (list (elmo-imap4-response-value status 'recent)
1104                  (elmo-imap4-response-value status 'unseen)
1105                  (elmo-imap4-response-value status 'messages))
1106            data))
1107
1108 (defun elmo-imap4-server-diff-async (folder)
1109   (let ((session (elmo-imap4-get-session folder)))
1110     ;; We should `check' folder to obtain newest information here.
1111     ;; But since there's no asynchronous check mechanism in elmo yet,
1112     ;; checking is not done here.
1113     (with-current-buffer (elmo-network-session-buffer session)
1114       (setq elmo-imap4-status-callback
1115             'elmo-imap4-server-diff-async-callback-1)
1116       (setq elmo-imap4-status-callback-data
1117             elmo-imap4-server-diff-async-callback-data))
1118     (elmo-imap4-send-command session
1119                              (list
1120                               "status "
1121                               (elmo-imap4-mailbox
1122                                (elmo-imap4-folder-mailbox-internal folder))
1123                               " (recent unseen messages)"))))
1124
1125 (luna-define-method elmo-server-diff-async ((folder elmo-imap4-folder))
1126   (let ((session (elmo-imap4-get-session folder)))
1127     ;; commit.
1128     ;; (elmo-imap4-commit spec)
1129     (with-current-buffer (elmo-network-session-buffer session)
1130       (setq elmo-imap4-status-callback
1131             'elmo-imap4-server-diff-async-callback-1)
1132       (setq elmo-imap4-status-callback-data
1133             elmo-imap4-server-diff-async-callback-data))
1134     (elmo-imap4-send-command session
1135                              (list
1136                               "status "
1137                               (elmo-imap4-mailbox
1138                                (elmo-imap4-folder-mailbox-internal folder))
1139                               " (recent unseen messages)"))))
1140
1141 ;;; IMAP parser.
1142
1143 (defvar elmo-imap4-server-eol "\r\n"
1144   "The EOL string sent from the server.")
1145
1146 (defvar elmo-imap4-client-eol "\r\n"
1147   "The EOL string we send to the server.")
1148
1149 (defvar elmo-imap4-display-literal-progress nil)
1150
1151 (defun elmo-imap4-find-next-line ()
1152   "Return point at end of current line, taking into account literals.
1153 Return nil if no complete line has arrived."
1154   (when (re-search-forward (concat elmo-imap4-server-eol "\\|{\\([0-9]+\\)}"
1155                                    elmo-imap4-server-eol)
1156                            nil t)
1157     (if (match-string 1)
1158         (if (< (point-max) (+ (point) (string-to-number (match-string 1))))
1159             (progn
1160               (if (and elmo-imap4-display-literal-progress
1161                        (> (string-to-number (match-string 1))
1162                           (min elmo-display-retrieval-progress-threshold 100)))
1163                   (elmo-display-progress
1164                    'elmo-imap4-display-literal-progress
1165                    (format "Retrieving (%d/%d bytes)..."
1166                            (- (point-max) (point))
1167                            (string-to-number (match-string 1)))
1168                    (/ (- (point-max) (point))
1169                       (/ (string-to-number (match-string 1)) 100))))
1170               nil)
1171           (goto-char (+ (point) (string-to-number (match-string 1))))
1172           (elmo-imap4-find-next-line))
1173       (point))))
1174
1175 (defun elmo-imap4-sentinel (process string)
1176   (delete-process process))
1177
1178 (defun elmo-imap4-arrival-filter (proc string)
1179   "IMAP process filter."
1180   (when (buffer-live-p (process-buffer proc))
1181   (with-current-buffer (process-buffer proc)
1182     (elmo-imap4-debug "-> %s" string)
1183     (goto-char (point-max))
1184     (insert string)
1185     (let (end)
1186       (goto-char (point-min))
1187       (while (setq end (elmo-imap4-find-next-line))
1188         (save-restriction
1189           (narrow-to-region (point-min) end)
1190           (delete-backward-char (length elmo-imap4-server-eol))
1191           (goto-char (point-min))
1192           (unwind-protect
1193               (cond ((eq elmo-imap4-status 'initial)
1194                      (setq elmo-imap4-current-response
1195                            (list
1196                             (list 'greeting (elmo-imap4-parse-greeting)))))
1197                     ((or (eq elmo-imap4-status 'auth)
1198                          (eq elmo-imap4-status 'nonauth)
1199                          (eq elmo-imap4-status 'selected)
1200                          (eq elmo-imap4-status 'examine))
1201                      (setq elmo-imap4-current-response
1202                            (cons
1203                             (elmo-imap4-parse-response)
1204                             elmo-imap4-current-response)))
1205                     (t
1206                      (message "Unknown state %s in arrival filter"
1207                               elmo-imap4-status))))
1208           (delete-region (point-min) (point-max))))))))
1209
1210 ;; IMAP parser.
1211
1212 (defsubst elmo-imap4-forward ()
1213   (or (eobp) (forward-char 1)))
1214
1215 (defsubst elmo-imap4-parse-number ()
1216   (when (looking-at "[0-9]+")
1217     (prog1
1218         (string-to-number (match-string 0))
1219       (goto-char (match-end 0)))))
1220
1221 (defsubst elmo-imap4-parse-literal ()
1222   (when (looking-at "{\\([0-9]+\\)}\r\n")
1223     (let ((pos (match-end 0))
1224           (len (string-to-number (match-string 1))))
1225       (if (< (point-max) (+ pos len))
1226           nil
1227         (goto-char (+ pos len))
1228         (buffer-substring pos (+ pos len))))))
1229 ;;;     (list ' pos (+ pos len))))))
1230
1231 (defsubst elmo-imap4-parse-string ()
1232   (cond ((eq (char-after (point)) ?\")
1233          (forward-char 1)
1234          (let ((p (point)) (name ""))
1235            (skip-chars-forward "^\"\\\\")
1236            (setq name (buffer-substring p (point)))
1237            (while (eq (char-after (point)) ?\\)
1238              (setq p (1+ (point)))
1239              (forward-char 2)
1240              (skip-chars-forward "^\"\\\\")
1241              (setq name (concat name (buffer-substring p (point)))))
1242            (forward-char 1)
1243            name))
1244         ((eq (char-after (point)) ?{)
1245          (elmo-imap4-parse-literal))))
1246
1247 (defsubst elmo-imap4-parse-nil ()
1248   (if (looking-at "NIL")
1249       (goto-char (match-end 0))))
1250
1251 (defsubst elmo-imap4-parse-nstring ()
1252   (or (elmo-imap4-parse-string)
1253       (and (elmo-imap4-parse-nil)
1254            nil)))
1255
1256 (defsubst elmo-imap4-parse-astring ()
1257   (or (elmo-imap4-parse-string)
1258       (buffer-substring (point)
1259                         (if (re-search-forward "[(){ \r\n%*\"\\]" nil t)
1260                             (goto-char (1- (match-end 0)))
1261                           (end-of-line)
1262                           (point)))))
1263
1264 (defsubst elmo-imap4-parse-address ()
1265   (let (address)
1266     (when (eq (char-after (point)) ?\()
1267       (elmo-imap4-forward)
1268       (setq address (vector (prog1 (elmo-imap4-parse-nstring)
1269                               (elmo-imap4-forward))
1270                             (prog1 (elmo-imap4-parse-nstring)
1271                               (elmo-imap4-forward))
1272                             (prog1 (elmo-imap4-parse-nstring)
1273                               (elmo-imap4-forward))
1274                             (elmo-imap4-parse-nstring)))
1275       (when (eq (char-after (point)) ?\))
1276         (elmo-imap4-forward)
1277         address))))
1278
1279 (defsubst elmo-imap4-parse-address-list ()
1280   (if (eq (char-after (point)) ?\()
1281       (let (address addresses)
1282         (elmo-imap4-forward)
1283         (while (and (not (eq (char-after (point)) ?\)))
1284                     ;; next line for MS Exchange bug
1285                     (progn (and (eq (char-after (point)) ? ) (elmo-imap4-forward)) t)
1286                     (setq address (elmo-imap4-parse-address)))
1287           (setq addresses (cons address addresses)))
1288         (when (eq (char-after (point)) ?\))
1289           (elmo-imap4-forward)
1290           (nreverse addresses)))
1291     (assert (elmo-imap4-parse-nil))))
1292
1293 (defsubst elmo-imap4-parse-mailbox ()
1294   (let ((mailbox (elmo-imap4-parse-astring)))
1295     (if (string-equal "INBOX" (upcase mailbox))
1296         "INBOX"
1297       mailbox)))
1298
1299 (defun elmo-imap4-parse-greeting ()
1300   "Parse a IMAP greeting."
1301   (cond ((looking-at "\\* OK ")
1302          (setq elmo-imap4-status 'nonauth))
1303         ((looking-at "\\* PREAUTH ")
1304          (setq elmo-imap4-status 'auth))
1305         ((looking-at "\\* BYE ")
1306          (setq elmo-imap4-status 'closed))))
1307
1308 (defun elmo-imap4-parse-response ()
1309   "Parse a IMAP command response."
1310   (let (token)
1311     (case (setq token (elmo-read (current-buffer)))
1312       (+ (progn
1313            (skip-chars-forward " ")
1314            (list 'continue-req (buffer-substring (point) (point-max)))))
1315       (* (case (prog1 (setq token (elmo-read (current-buffer)))
1316                  (elmo-imap4-forward))
1317            (OK         (elmo-imap4-parse-resp-text-code))
1318            (NO         (elmo-imap4-parse-resp-text-code))
1319            (BAD        (elmo-imap4-parse-resp-text-code))
1320            (BYE        (elmo-imap4-parse-bye))
1321            (FLAGS      (list 'flags
1322                              (elmo-imap4-parse-flag-list)))
1323            (LIST       (list 'list (elmo-imap4-parse-data-list)))
1324            (LSUB       (list 'lsub (elmo-imap4-parse-data-list)))
1325            (SEARCH     (list
1326                         'search
1327                         (elmo-read (concat "("
1328                                       (buffer-substring (point) (point-max))
1329                                       ")"))))
1330            (STATUS     (elmo-imap4-parse-status))
1331            ;; Added
1332            (NAMESPACE  (elmo-imap4-parse-namespace))
1333            (CAPABILITY (list 'capability
1334                              (elmo-read
1335                               (concat "(" (downcase (buffer-substring
1336                                                      (point) (point-max)))
1337                                       ")"))))
1338            (ACL (elmo-imap4-parse-acl))
1339            (t       (case (prog1 (elmo-read (current-buffer))
1340                             (elmo-imap4-forward))
1341                       (EXISTS  (list 'exists token))
1342                       (RECENT  (list 'recent token))
1343                       (EXPUNGE (list 'expunge token))
1344                       (FETCH   (elmo-imap4-parse-fetch token))
1345                       (t       (list 'garbage (buffer-string)))))))
1346       (t (if (not (string-match elmo-imap4-seq-prefix (symbol-name token)))
1347              (list 'garbage (buffer-string))
1348            (case (prog1 (elmo-read (current-buffer))
1349                    (elmo-imap4-forward))
1350              (OK  (progn
1351                     (setq elmo-imap4-parsing nil)
1352                     (setq token (symbol-name token))
1353                     (elmo-unintern token)
1354                     (elmo-imap4-debug "*%s* OK arrived" token)
1355                     (setq elmo-imap4-reached-tag token)
1356                     (list 'ok (elmo-imap4-parse-resp-text-code))))
1357              (NO  (progn
1358                     (setq elmo-imap4-parsing nil)
1359                     (setq token (symbol-name token))
1360                     (elmo-unintern token)
1361                     (elmo-imap4-debug "*%s* NO arrived" token)
1362                     (setq elmo-imap4-reached-tag token)
1363                     (let (code text)
1364                       (when (eq (char-after (point)) ?\[)
1365                         (setq code (buffer-substring (point)
1366                                                      (search-forward "]")))
1367                         (elmo-imap4-forward))
1368                       (setq text (buffer-substring (point) (point-max)))
1369                       (list 'no (list code text)))))
1370              (BAD (progn
1371                     (setq elmo-imap4-parsing nil)
1372                     (elmo-imap4-debug "*%s* BAD arrived" token)
1373                     (setq token (symbol-name token))
1374                     (elmo-unintern token)
1375                     (setq elmo-imap4-reached-tag token)
1376                     (let (code text)
1377                       (when (eq (char-after (point)) ?\[)
1378                         (setq code (buffer-substring (point)
1379                                                      (search-forward "]")))
1380                         (elmo-imap4-forward))
1381                       (setq text (buffer-substring (point) (point-max)))
1382                       (list 'bad (list code text)))))
1383              (t   (list 'garbage (buffer-string)))))))))
1384
1385 (defun elmo-imap4-parse-bye ()
1386   (let (code text)
1387     (when (eq (char-after (point)) ?\[)
1388       (setq code (buffer-substring (point)
1389                                    (search-forward "]")))
1390       (elmo-imap4-forward))
1391     (setq text (buffer-substring (point) (point-max)))
1392     (list 'bye (list code text))))
1393
1394 (defun elmo-imap4-parse-text ()
1395   (goto-char (point-min))
1396   (when (search-forward "[" nil t)
1397     (search-forward "]")
1398     (elmo-imap4-forward))
1399   (list 'text (buffer-substring (point) (point-max))))
1400
1401 (defun elmo-imap4-parse-resp-text-code ()
1402   (when (eq (char-after (point)) ?\[)
1403     (elmo-imap4-forward)
1404     (cond ((search-forward "PERMANENTFLAGS " nil t)
1405            (list 'permanentflags (elmo-imap4-parse-flag-list)))
1406           ((search-forward "UIDNEXT " nil t)
1407            (list 'uidnext (elmo-read (current-buffer))))
1408           ((search-forward "UNSEEN " nil t)
1409            (list 'unseen (elmo-read (current-buffer))))
1410           ((looking-at "UIDVALIDITY \\([0-9]+\\)")
1411            (list 'uidvalidity (match-string 1)))
1412           ((search-forward "READ-ONLY" nil t)
1413            (list 'read-only t))
1414           ((search-forward "READ-WRITE" nil t)
1415            (list 'read-write t))
1416           ((search-forward "NEWNAME " nil t)
1417            (let (oldname newname)
1418              (setq oldname (elmo-imap4-parse-string))
1419              (elmo-imap4-forward)
1420              (setq newname (elmo-imap4-parse-string))
1421              (list 'newname newname oldname)))
1422           ((search-forward "TRYCREATE" nil t)
1423            (list 'trycreate t))
1424           ((looking-at "APPENDUID \\([0-9]+\\) \\([0-9]+\\)")
1425            (list 'appenduid
1426                  (list (match-string 1)
1427                        (string-to-number (match-string 2)))))
1428           ((looking-at "COPYUID \\([0-9]+\\) \\([0-9,:]+\\) \\([0-9,:]+\\)")
1429            (list 'copyuid (list (match-string 1)
1430                                 (match-string 2)
1431                                 (match-string 3))))
1432           ((search-forward "ALERT] " nil t)
1433            (message "IMAP server information: %s"
1434                     (buffer-substring (point) (point-max))))
1435           (t (list 'unknown)))))
1436
1437 (defun elmo-imap4-parse-data-list ()
1438   (let (flags delimiter mailbox)
1439     (setq flags (elmo-imap4-parse-flag-list))
1440     (when (looking-at " NIL\\| \"\\\\?\\(.\\)\"")
1441       (setq delimiter (match-string 1))
1442       (goto-char (1+ (match-end 0)))
1443       (when (setq mailbox (elmo-imap4-parse-mailbox))
1444         (list mailbox flags delimiter)))))
1445
1446 (defsubst elmo-imap4-parse-header-list ()
1447   (when (eq (char-after (point)) ?\()
1448     (let (strlist)
1449       (while (not (eq (char-after (point)) ?\)))
1450         (elmo-imap4-forward)
1451         (push (elmo-imap4-parse-astring) strlist))
1452       (elmo-imap4-forward)
1453       (nreverse strlist))))
1454
1455 (defsubst elmo-imap4-parse-fetch-body-section ()
1456   (let ((section
1457          (buffer-substring (point)
1458                            (1-
1459                             (progn (re-search-forward "[] ]" nil t)
1460                                    (point))))))
1461     (if (eq (char-before) ? )
1462         (prog1
1463             (mapconcat 'identity
1464                        (cons section (elmo-imap4-parse-header-list)) " ")
1465           (search-forward "]" nil t))
1466       section)))
1467
1468 (defun elmo-imap4-parse-fetch (response)
1469   (when (eq (char-after (point)) ?\()
1470     (let (element list)
1471       (while (not (eq (char-after (point)) ?\)))
1472         (elmo-imap4-forward)
1473         (let ((token (elmo-imap4-fetch-read (current-buffer))))
1474           (elmo-imap4-forward)
1475           (setq element
1476                 (cond ((eq token 'UID)
1477                        (list 'uid (condition-case nil
1478                                       (elmo-read (current-buffer))
1479                                     (error nil))))
1480                       ((eq token 'FLAGS)
1481                        (list 'flags (elmo-imap4-parse-flag-list)))
1482                       ((eq token 'ENVELOPE)
1483                        (list 'envelope (elmo-imap4-parse-envelope)))
1484                       ((eq token 'INTERNALDATE)
1485                        (list 'internaldate (elmo-imap4-parse-string)))
1486                       ((eq token 'RFC822)
1487                        (list 'rfc822 (elmo-imap4-parse-nstring)))
1488                       ((eq token (intern elmo-imap4-rfc822-header))
1489                        (list 'rfc822header (elmo-imap4-parse-nstring)))
1490                       ((eq token (intern elmo-imap4-rfc822-text))
1491                        (list 'rfc822text (elmo-imap4-parse-nstring)))
1492                       ((eq token (intern elmo-imap4-rfc822-size))
1493                        (list 'rfc822size (elmo-read (current-buffer))))
1494                       ((eq token 'BODY)
1495                        (if (eq (char-before) ?\[)
1496                            (list
1497                             'bodydetail
1498                             (upcase (elmo-imap4-parse-fetch-body-section))
1499                             (and
1500                              (eq (char-after (point)) ?<)
1501                              (buffer-substring (1+ (point))
1502                                                (progn
1503                                                  (search-forward ">" nil t)
1504                                                  (point))))
1505                             (progn (elmo-imap4-forward)
1506                                    (elmo-imap4-parse-nstring)))
1507                          (list 'body (elmo-imap4-parse-body))))
1508                       ((eq token 'BODYSTRUCTURE)
1509                        (list 'bodystructure (elmo-imap4-parse-body)))))
1510           (setq list (cons element list))))
1511       (and elmo-imap4-fetch-callback
1512            (funcall elmo-imap4-fetch-callback
1513                     list elmo-imap4-fetch-callback-data))
1514       (list 'fetch list))))
1515
1516 (defun elmo-imap4-parse-status ()
1517   (let ((mailbox (elmo-imap4-parse-mailbox))
1518         status)
1519     (when (and mailbox (search-forward "(" nil t))
1520       (while (not (eq (char-after (point)) ?\)))
1521         (setq status
1522               (cons
1523                (let ((token (elmo-read (current-buffer))))
1524                  (cond ((eq token 'MESSAGES)
1525                         (list 'messages (elmo-read (current-buffer))))
1526                        ((eq token 'RECENT)
1527                         (list 'recent (elmo-read (current-buffer))))
1528                        ((eq token 'UIDNEXT)
1529                         (list 'uidnext (elmo-read (current-buffer))))
1530                        ((eq token 'UIDVALIDITY)
1531                         (and (looking-at " \\([0-9]+\\)")
1532                              (prog1 (list 'uidvalidity (match-string 1))
1533                                (goto-char (match-end 1)))))
1534                        ((eq token 'UNSEEN)
1535                         (list 'unseen (elmo-read (current-buffer))))
1536                        (t
1537                         (message
1538                          "Unknown status data %s in mailbox %s ignored"
1539                          token mailbox))))
1540                status))))
1541     (and elmo-imap4-status-callback
1542          (funcall elmo-imap4-status-callback
1543                   status
1544                   elmo-imap4-status-callback-data))
1545     (list 'status status)))
1546
1547
1548 (defmacro elmo-imap4-value (value)
1549   (` (if (eq (, value) 'NIL) nil
1550        (, value))))
1551
1552 (defmacro elmo-imap4-nth (pos list)
1553   (` (let ((value (nth (, pos) (, list))))
1554        (elmo-imap4-value value))))
1555
1556 (defun elmo-imap4-parse-namespace ()
1557   (list 'namespace
1558         (nconc
1559          (copy-sequence elmo-imap4-extra-namespace-alist)
1560          (elmo-imap4-parse-namespace-subr
1561           (elmo-read (concat "(" (buffer-substring
1562                                   (point) (point-max))
1563                              ")"))))))
1564
1565 (defun elmo-imap4-parse-namespace-subr (ns)
1566   (let (prefix delim namespace-alist default-delim)
1567     ;; 0: personal, 1: other, 2: shared
1568     (dotimes (i 3)
1569       (setq namespace-alist
1570             (nconc namespace-alist
1571                    (delq nil
1572                          (mapcar
1573                           (lambda (namespace)
1574                             (setq prefix (elmo-imap4-nth 0 namespace)
1575                                   delim (elmo-imap4-nth 1 namespace))
1576                             (if (and prefix delim
1577                                      (string-match
1578                                       (concat (regexp-quote delim) "\\'")
1579                                       prefix))
1580                                 (setq prefix (substring prefix 0
1581                                                         (match-beginning 0))))
1582                             (if (eq (length prefix) 0)
1583                                 (progn (setq default-delim delim) nil)
1584                               (cons
1585                                (concat "^\\("
1586                                        (if (string= (downcase prefix) "inbox")
1587                                            "[Ii][Nn][Bb][Oo][Xx]"
1588                                          (regexp-quote prefix))
1589                                        "\\).*$")
1590                                delim)))
1591                           (elmo-imap4-nth i ns))))))
1592     (if default-delim
1593         (setq namespace-alist
1594               (nconc namespace-alist
1595                      (list (cons "^.*$" default-delim)))))
1596     namespace-alist))
1597
1598 (defun elmo-imap4-parse-acl ()
1599   (let ((mailbox (elmo-imap4-parse-mailbox))
1600         identifier rights acl)
1601     (while (eq (char-after (point)) ?\ )
1602       (elmo-imap4-forward)
1603       (setq identifier (elmo-imap4-parse-astring))
1604       (elmo-imap4-forward)
1605       (setq rights (elmo-imap4-parse-astring))
1606       (setq acl (append acl (list (cons identifier rights)))))
1607     (list 'acl acl mailbox)))
1608
1609 (defun elmo-imap4-parse-flag-list ()
1610   (let ((str (buffer-substring (+ (point) 1)
1611                                (progn (search-forward ")" nil t)
1612                                       (- (point) 1)))))
1613     (unless (eq (length str) 0)
1614       (split-string str))))
1615
1616 (defun elmo-imap4-parse-envelope ()
1617   (when (eq (char-after (point)) ?\()
1618     (elmo-imap4-forward)
1619     (vector (prog1 (elmo-imap4-parse-nstring);; date
1620               (elmo-imap4-forward))
1621             (prog1 (elmo-imap4-parse-nstring);; subject
1622               (elmo-imap4-forward))
1623             (prog1 (elmo-imap4-parse-address-list);; from
1624               (elmo-imap4-forward))
1625             (prog1 (elmo-imap4-parse-address-list);; sender
1626               (elmo-imap4-forward))
1627             (prog1 (elmo-imap4-parse-address-list);; reply-to
1628               (elmo-imap4-forward))
1629             (prog1 (elmo-imap4-parse-address-list);; to
1630               (elmo-imap4-forward))
1631             (prog1 (elmo-imap4-parse-address-list);; cc
1632               (elmo-imap4-forward))
1633             (prog1 (elmo-imap4-parse-address-list);; bcc
1634               (elmo-imap4-forward))
1635             (prog1 (elmo-imap4-parse-nstring);; in-reply-to
1636               (elmo-imap4-forward))
1637             (prog1 (elmo-imap4-parse-nstring);; message-id
1638               (elmo-imap4-forward)))))
1639
1640 (defsubst elmo-imap4-parse-string-list ()
1641   (cond ((eq (char-after (point)) ?\();; body-fld-param
1642          (let (strlist str)
1643            (elmo-imap4-forward)
1644            (while (setq str (elmo-imap4-parse-string))
1645              (push str strlist)
1646              (elmo-imap4-forward))
1647            (nreverse strlist)))
1648         ((elmo-imap4-parse-nil)
1649          nil)))
1650
1651 (defun elmo-imap4-parse-body-extension ()
1652   (if (eq (char-after (point)) ?\()
1653       (let (b-e)
1654         (elmo-imap4-forward)
1655         (push (elmo-imap4-parse-body-extension) b-e)
1656         (while (eq (char-after (point)) ?\ )
1657           (elmo-imap4-forward)
1658           (push (elmo-imap4-parse-body-extension) b-e))
1659         (assert (eq (char-after (point)) ?\)))
1660         (elmo-imap4-forward)
1661         (nreverse b-e))
1662     (or (elmo-imap4-parse-number)
1663         (elmo-imap4-parse-nstring))))
1664
1665 (defsubst elmo-imap4-parse-body-ext ()
1666   (let (ext)
1667     (when (eq (char-after (point)) ?\ );; body-fld-dsp
1668       (elmo-imap4-forward)
1669       (let (dsp)
1670         (if (eq (char-after (point)) ?\()
1671             (progn
1672               (elmo-imap4-forward)
1673               (push (elmo-imap4-parse-string) dsp)
1674               (elmo-imap4-forward)
1675               (push (elmo-imap4-parse-string-list) dsp)
1676               (elmo-imap4-forward))
1677           (assert (elmo-imap4-parse-nil)))
1678         (push (nreverse dsp) ext))
1679       (when (eq (char-after (point)) ?\ );; body-fld-lang
1680         (elmo-imap4-forward)
1681         (if (eq (char-after (point)) ?\()
1682             (push (elmo-imap4-parse-string-list) ext)
1683           (push (elmo-imap4-parse-nstring) ext))
1684         (while (eq (char-after (point)) ?\ );; body-extension
1685           (elmo-imap4-forward)
1686           (setq ext (append (elmo-imap4-parse-body-extension) ext)))))
1687     ext))
1688
1689 (defun elmo-imap4-parse-body ()
1690   (let (body)
1691     (when (eq (char-after (point)) ?\()
1692       (elmo-imap4-forward)
1693       (if (eq (char-after (point)) ?\()
1694           (let (subbody)
1695             (while (and (eq (char-after (point)) ?\()
1696                         (setq subbody (elmo-imap4-parse-body)))
1697               (push subbody body))
1698             (elmo-imap4-forward)
1699             (push (elmo-imap4-parse-string) body);; media-subtype
1700             (when (eq (char-after (point)) ?\ );; body-ext-mpart:
1701               (elmo-imap4-forward)
1702               (if (eq (char-after (point)) ?\();; body-fld-param
1703                   (push (elmo-imap4-parse-string-list) body)
1704                 (push (and (elmo-imap4-parse-nil) nil) body))
1705               (setq body
1706                     (append (elmo-imap4-parse-body-ext) body)));; body-ext-...
1707             (assert (eq (char-after (point)) ?\)))
1708             (elmo-imap4-forward)
1709             (nreverse body))
1710
1711         (push (elmo-imap4-parse-string) body);; media-type
1712         (elmo-imap4-forward)
1713         (push (elmo-imap4-parse-string) body);; media-subtype
1714         (elmo-imap4-forward)
1715         ;; next line for Sun SIMS bug
1716         (and (eq (char-after (point)) ? ) (elmo-imap4-forward))
1717         (if (eq (char-after (point)) ?\();; body-fld-param
1718             (push (elmo-imap4-parse-string-list) body)
1719           (push (and (elmo-imap4-parse-nil) nil) body))
1720         (elmo-imap4-forward)
1721         (push (elmo-imap4-parse-nstring) body);; body-fld-id
1722         (elmo-imap4-forward)
1723         (push (elmo-imap4-parse-nstring) body);; body-fld-desc
1724         (elmo-imap4-forward)
1725         (push (elmo-imap4-parse-string) body);; body-fld-enc
1726         (elmo-imap4-forward)
1727         (push (elmo-imap4-parse-number) body);; body-fld-octets
1728
1729         ;; ok, we're done parsing the required parts, what comes now is one
1730         ;; of three things:
1731         ;;
1732         ;; envelope       (then we're parsing body-type-msg)
1733         ;; body-fld-lines (then we're parsing body-type-text)
1734         ;; body-ext-1part (then we're parsing body-type-basic)
1735         ;;
1736         ;; the problem is that the two first are in turn optionally followed
1737         ;; by the third.  So we parse the first two here (if there are any)...
1738
1739         (when (eq (char-after (point)) ?\ )
1740           (elmo-imap4-forward)
1741           (let (lines)
1742             (cond ((eq (char-after (point)) ?\();; body-type-msg:
1743                    (push (elmo-imap4-parse-envelope) body);; envelope
1744                    (elmo-imap4-forward)
1745                    (push (elmo-imap4-parse-body) body);; body
1746                    (elmo-imap4-forward)
1747                    (push (elmo-imap4-parse-number) body));; body-fld-lines
1748                   ((setq lines (elmo-imap4-parse-number));; body-type-text:
1749                    (push lines body));; body-fld-lines
1750                   (t
1751                    (backward-char)))));; no match...
1752
1753         ;; ...and then parse the third one here...
1754
1755         (when (eq (char-after (point)) ?\ );; body-ext-1part:
1756           (elmo-imap4-forward)
1757           (push (elmo-imap4-parse-nstring) body);; body-fld-md5
1758           (setq body
1759                 (append (elmo-imap4-parse-body-ext) body)));; body-ext-1part..
1760
1761         (assert (eq (char-after (point)) ?\)))
1762         (elmo-imap4-forward)
1763         (nreverse body)))))
1764
1765 (luna-define-method elmo-folder-initialize :around ((folder
1766                                                      elmo-imap4-folder)
1767                                                     name)
1768   (let ((default-user   elmo-imap4-default-user)
1769         (default-server elmo-imap4-default-server)
1770         (default-port   elmo-imap4-default-port)
1771         (elmo-network-stream-type-alist
1772          (if elmo-imap4-stream-type-alist
1773              (append elmo-imap4-stream-type-alist
1774                      elmo-network-stream-type-alist)
1775            elmo-network-stream-type-alist))
1776         parse)
1777     (when (string-match "\\(.*\\)@\\(.*\\)" default-server)
1778       ;; case: imap4-default-server is specified like
1779       ;; "hoge%imap.server@gateway".
1780       (setq default-user (elmo-match-string 1 default-server))
1781       (setq default-server (elmo-match-string 2 default-server)))
1782     (setq name (luna-call-next-method))
1783     ;; mailbox
1784     (setq parse (elmo-parse-token name ":"))
1785     (elmo-imap4-folder-set-mailbox-internal folder
1786                                             (elmo-imap4-encode-folder-string
1787                                              (if (eq (length (car parse)) 0)
1788                                                  elmo-imap4-default-mailbox
1789                                                (car parse))))
1790     ;; user
1791     (setq parse (elmo-parse-prefixed-element ?: (cdr parse) "/"))
1792     (elmo-net-folder-set-user-internal folder
1793                                        (if (eq (length (car parse)) 0)
1794                                            default-user
1795                                          (car parse)))
1796     ;; auth
1797     (setq parse (elmo-parse-prefixed-element ?/ (cdr parse)))
1798     (elmo-net-folder-set-auth-internal
1799      folder
1800      (if (eq (length (car parse)) 0)
1801          (or elmo-imap4-default-authenticate-type 'clear)
1802        (intern (car parse))))
1803     (unless (elmo-net-folder-server-internal folder)
1804       (elmo-net-folder-set-server-internal folder default-server))
1805     (unless (elmo-net-folder-port-internal folder)
1806       (elmo-net-folder-set-port-internal folder default-port))
1807     (unless (elmo-net-folder-stream-type-internal folder)
1808       (elmo-net-folder-set-stream-type-internal
1809        folder
1810        (elmo-get-network-stream-type elmo-imap4-default-stream-type)))
1811     folder))
1812
1813 ;;; ELMO IMAP4 folder
1814 (luna-define-method elmo-folder-expand-msgdb-path ((folder
1815                                                     elmo-imap4-folder))
1816   (convert-standard-filename
1817    (let ((mailbox (elmo-imap4-folder-mailbox-internal folder)))
1818      (if (string= "inbox" (downcase mailbox))
1819          (setq mailbox "inbox"))
1820      (if (eq (string-to-char mailbox) ?/)
1821          (setq mailbox (substring mailbox 1 (length mailbox))))
1822      (expand-file-name
1823       mailbox
1824       (expand-file-name
1825        (or (elmo-net-folder-user-internal folder) "nobody")
1826        (expand-file-name (or (elmo-net-folder-server-internal folder)
1827                              "nowhere")
1828                          (expand-file-name
1829                           "imap"
1830                           elmo-msgdb-directory)))))))
1831
1832 (luna-define-method elmo-folder-status-plugged ((folder
1833                                                  elmo-imap4-folder))
1834   (elmo-imap4-folder-status-plugged folder))
1835
1836 (defun elmo-imap4-folder-status-plugged (folder)
1837   (let ((session (elmo-imap4-get-session folder))
1838         (killed (elmo-msgdb-killed-list-load
1839                  (elmo-folder-msgdb-path folder)))
1840         status)
1841     (with-current-buffer (elmo-network-session-buffer session)
1842       (setq elmo-imap4-status-callback nil)
1843       (setq elmo-imap4-status-callback-data nil))
1844     (setq status (elmo-imap4-response-value
1845                   (elmo-imap4-send-command-wait
1846                    session
1847                    (list "status "
1848                          (elmo-imap4-mailbox
1849                           (elmo-imap4-folder-mailbox-internal folder))
1850                          " (uidnext messages)"))
1851                   'status))
1852     (cons
1853      (- (elmo-imap4-response-value status 'uidnext) 1)
1854      (if killed
1855          (-
1856           (elmo-imap4-response-value status 'messages)
1857           (elmo-msgdb-killed-list-length killed))
1858        (elmo-imap4-response-value status 'messages)))))
1859
1860 (luna-define-method elmo-folder-list-messages-plugged ((folder
1861                                                         elmo-imap4-folder)
1862                                                        &optional nohide)
1863   (elmo-imap4-list folder
1864                    (let ((max (elmo-msgdb-max-of-killed
1865                                (elmo-folder-killed-list-internal folder))))
1866                      (if (or nohide
1867                              (null (eq max 0)))
1868                          (format "uid %d:*" (1+ max))
1869                        "all"))))
1870
1871 (luna-define-method elmo-folder-list-unreads-plugged
1872   ((folder elmo-imap4-folder))
1873   (elmo-imap4-list folder "unseen"))
1874
1875 (luna-define-method elmo-folder-list-importants-plugged
1876   ((folder elmo-imap4-folder))
1877   (elmo-imap4-list folder "flagged"))
1878
1879 (luna-define-method elmo-folder-use-flag-p ((folder elmo-imap4-folder))
1880   (not (string-match elmo-imap4-disuse-server-flag-mailbox-regexp
1881                      (elmo-imap4-folder-mailbox-internal folder))))
1882
1883 (luna-define-method elmo-folder-list-subfolders ((folder elmo-imap4-folder)
1884                                                  &optional one-level)
1885   (let* ((root (elmo-imap4-folder-mailbox-internal folder))
1886          (session (elmo-imap4-get-session folder))
1887          (prefix (elmo-folder-prefix-internal folder))
1888          (delim (or
1889                  (cdr
1890                   (elmo-string-matched-assoc
1891                    root
1892                    (with-current-buffer (elmo-network-session-buffer session)
1893                      elmo-imap4-server-namespace)))
1894                  elmo-imap4-default-hierarchy-delimiter))
1895          ;; Append delimiter when root with namespace.
1896          (root (if (and (match-end 1)
1897                         (string= (substring root (match-end 1))
1898                                  ""))
1899                    (concat root delim)
1900                  root))
1901          result append-serv type)
1902     (setq result (elmo-imap4-response-get-selectable-mailbox-list
1903                   (elmo-imap4-send-command-wait
1904                    session
1905                    (list "list " (elmo-imap4-mailbox root) " *"))))
1906     (unless (string= (elmo-net-folder-user-internal folder)
1907                      elmo-imap4-default-user)
1908       (setq append-serv (concat ":" (elmo-net-folder-user-internal folder))))
1909     (unless (eq (elmo-net-folder-auth-internal folder)
1910                 (or elmo-imap4-default-authenticate-type 'clear))
1911       (setq append-serv
1912             (concat append-serv "/"
1913                     (symbol-name (elmo-net-folder-auth-internal folder)))))
1914     (unless (string= (elmo-net-folder-server-internal folder)
1915                      elmo-imap4-default-server)
1916       (setq append-serv (concat append-serv "@"
1917                                 (elmo-net-folder-server-internal folder))))
1918     (unless (eq (elmo-net-folder-port-internal folder) elmo-imap4-default-port)
1919       (setq append-serv (concat append-serv ":"
1920                                 (int-to-string
1921                                  (elmo-net-folder-port-internal folder)))))
1922     (setq type (elmo-net-folder-stream-type-internal folder))
1923     (unless (eq (elmo-network-stream-type-symbol type)
1924                 elmo-imap4-default-stream-type)
1925       (if type
1926           (setq append-serv (concat append-serv
1927                                     (elmo-network-stream-type-spec-string
1928                                      type)))))
1929     (if one-level
1930         (let ((re-delim (regexp-quote delim))
1931               (case-fold-search nil)
1932               folder ret has-child-p)
1933           ;; Append delimiter
1934           (when (and root
1935                      (not (string= root ""))
1936                      (not (string-match
1937                            (concat "\\(.*\\)" re-delim "\\'")
1938                            root)))
1939             (setq root (concat root delim)))
1940           (while (setq folder (car result))
1941             (when (string-match
1942                    (concat "^\\(" (regexp-quote root) "[^" re-delim "]" "+\\)"
1943                            re-delim)
1944                    folder)
1945               (setq folder (match-string 1 folder)))
1946             (setq has-child-p nil
1947                   result (delq
1948                           nil
1949                           (mapcar (lambda (fld)
1950                                     (if (string-match
1951                                          (concat "^" (regexp-quote folder)
1952                                                  "\\(" re-delim "\\|\\'\\)")
1953                                          fld)
1954                                         (progn (setq has-child-p t) nil)
1955                                       fld))
1956                                   (cdr result)))
1957                   folder (concat prefix
1958                                  (elmo-imap4-decode-folder-string folder)
1959                                  (and append-serv
1960                                       (eval append-serv)))
1961                   ret (append ret (if has-child-p
1962                                       (list (list folder))
1963                                     (list folder)))))
1964           ret)
1965       (mapcar (lambda (fld)
1966                 (concat prefix (elmo-imap4-decode-folder-string fld)
1967                         (and append-serv
1968                              (eval append-serv))))
1969               result))))
1970
1971 (luna-define-method elmo-folder-exists-p-plugged ((folder elmo-imap4-folder))
1972   (let ((session (elmo-imap4-get-session folder)))
1973     (if (string=
1974          (elmo-imap4-session-current-mailbox-internal session)
1975          (elmo-imap4-folder-mailbox-internal folder))
1976         t
1977       (elmo-imap4-session-select-mailbox
1978        session
1979        (elmo-imap4-folder-mailbox-internal folder)
1980        'force 'notify-bye))))
1981
1982 (luna-define-method elmo-folder-writable-p ((folder elmo-imap4-folder))
1983   t)
1984
1985 (luna-define-method elmo-folder-delete :before ((folder elmo-imap4-folder))
1986   (let ((session (elmo-imap4-get-session folder))
1987         msgs)
1988     (when (elmo-imap4-folder-mailbox-internal folder)
1989       (when (setq msgs (elmo-folder-list-messages folder))
1990         (elmo-folder-delete-messages folder msgs))
1991       (elmo-imap4-send-command-wait session "close")
1992       (elmo-imap4-send-command-wait
1993        session
1994        (list "delete "
1995              (elmo-imap4-mailbox
1996               (elmo-imap4-folder-mailbox-internal folder)))))))
1997
1998 (luna-define-method elmo-folder-rename-internal ((folder elmo-imap4-folder)
1999                                                  new-folder)
2000   (let ((session (elmo-imap4-get-session folder)))
2001     ;; make sure the folder is selected.
2002     (elmo-imap4-session-select-mailbox session
2003                                        (elmo-imap4-folder-mailbox-internal
2004                                         folder))
2005     (elmo-imap4-send-command-wait session "close")
2006     (elmo-imap4-send-command-wait
2007      session
2008      (list "rename "
2009            (elmo-imap4-mailbox
2010             (elmo-imap4-folder-mailbox-internal folder))
2011            " "
2012            (elmo-imap4-mailbox
2013             (elmo-imap4-folder-mailbox-internal new-folder))))))
2014
2015 (defun elmo-imap4-copy-messages (src-folder dst-folder numbers)
2016   (let ((session (elmo-imap4-get-session src-folder))
2017         (set-list (elmo-imap4-make-number-set-list
2018                    numbers
2019                    elmo-imap4-number-set-chop-length))
2020         succeeds)
2021     (elmo-imap4-session-select-mailbox session
2022                                        (elmo-imap4-folder-mailbox-internal
2023                                         src-folder))
2024     (while set-list
2025       (if (elmo-imap4-send-command-wait session
2026                                         (list
2027                                          (format
2028                                           (if elmo-imap4-use-uid
2029                                               "uid copy %s "
2030                                             "copy %s ")
2031                                           (cdr (car set-list)))
2032                                          (elmo-imap4-mailbox
2033                                           (elmo-imap4-folder-mailbox-internal
2034                                            dst-folder))))
2035           (setq succeeds (append succeeds numbers)))
2036       (setq set-list (cdr set-list)))
2037     succeeds))
2038
2039 (defun elmo-imap4-set-flag (folder numbers flag &optional remove)
2040   "Set flag on messages.
2041 FOLDER is the ELMO folder structure.
2042 NUMBERS is the message numbers to be flagged.
2043 FLAG is the flag name.
2044 If optional argument REMOVE is non-nil, remove FLAG."
2045   (let ((session (elmo-imap4-get-session folder))
2046         response set-list)
2047     (elmo-imap4-session-select-mailbox session
2048                                        (elmo-imap4-folder-mailbox-internal
2049                                         folder))
2050     (setq set-list (elmo-imap4-make-number-set-list
2051                     numbers
2052                     elmo-imap4-number-set-chop-length))
2053     (while set-list
2054       (with-current-buffer (elmo-network-session-buffer session)
2055         (setq elmo-imap4-fetch-callback nil)
2056         (setq elmo-imap4-fetch-callback-data nil))
2057       (unless (elmo-imap4-response-ok-p
2058                (elmo-imap4-send-command-wait
2059                 session
2060                 (format
2061                  (if elmo-imap4-use-uid
2062                      "uid store %s %sflags.silent (%s)"
2063                    "store %s %sflags.silent (%s)")
2064                  (cdr (car set-list))
2065                  (if remove "-" "+")
2066                  flag)))
2067         (setq response 'fail))
2068       (setq set-list (cdr set-list)))
2069     (not (eq response 'fail))))
2070
2071 (luna-define-method elmo-folder-delete-messages-plugged
2072   ((folder elmo-imap4-folder) numbers)
2073   (let ((session (elmo-imap4-get-session folder)))
2074     (elmo-imap4-set-flag folder numbers "\\Deleted")
2075     (elmo-imap4-send-command-wait session "expunge")))
2076
2077 (defmacro elmo-imap4-detect-search-charset (string)
2078   (` (with-temp-buffer
2079        (insert (, string))
2080        (detect-mime-charset-region (point-min) (point-max)))))
2081
2082 (defun elmo-imap4-search-internal-primitive (folder session filter from-msgs)
2083   (let ((search-key (elmo-filter-key filter))
2084         (imap-search-keys '("bcc" "body" "cc" "from" "subject" "to"))
2085         (total 0)
2086         (length (length from-msgs))
2087         charset set-list end results)
2088     (message "Searching...")
2089     (cond
2090      ((string= "last" search-key)
2091       (let ((numbers (or from-msgs (elmo-folder-list-messages folder))))
2092         (nthcdr (max (- (length numbers)
2093                         (string-to-int (elmo-filter-value filter)))
2094                      0)
2095                 numbers)))
2096      ((string= "first" search-key)
2097       (let* ((numbers (or from-msgs (elmo-folder-list-messages folder)))
2098              (rest (nthcdr (string-to-int (elmo-filter-value filter) )
2099                            numbers)))
2100         (mapcar '(lambda (x) (delete x numbers)) rest)
2101         numbers))
2102      ((or (string= "since" search-key)
2103           (string= "before" search-key))
2104       (setq search-key (concat "sent" search-key)
2105             set-list (elmo-imap4-make-number-set-list
2106                       from-msgs
2107                       elmo-imap4-number-set-chop-length)
2108             end nil)
2109       (while (not end)
2110         (setq results
2111               (append
2112                results
2113                (elmo-imap4-response-value
2114                 (elmo-imap4-send-command-wait
2115                  session
2116                  (format
2117                   (if elmo-imap4-use-uid
2118                       "uid search %s%s%s %s"
2119                     "search %s%s%s %s")
2120                   (if from-msgs
2121                       (concat
2122                        (if elmo-imap4-use-uid "uid ")
2123                        (cdr (car set-list))
2124                        " ")
2125                     "")
2126                   (if (eq (elmo-filter-type filter)
2127                           'unmatch)
2128                       "not " "")
2129                   search-key
2130                   (elmo-date-get-description
2131                    (elmo-date-get-datevec
2132                     (elmo-filter-value filter)))))
2133                 'search)))
2134         (when (> length elmo-display-progress-threshold)
2135           (setq total (+ total (car (car set-list))))
2136           (elmo-display-progress
2137            'elmo-imap4-search "Searching..."
2138            (/ (* total 100) length)))
2139         (setq set-list (cdr set-list)
2140               end (null set-list)))
2141       results)
2142      (t
2143       (setq charset
2144             (if (eq (length (elmo-filter-value filter)) 0)
2145                 (setq charset 'us-ascii)
2146               (elmo-imap4-detect-search-charset
2147                (elmo-filter-value filter)))
2148             set-list (elmo-imap4-make-number-set-list
2149                       from-msgs
2150                       elmo-imap4-number-set-chop-length)
2151             end nil)
2152       (while (not end)
2153         (setq results
2154               (append
2155                results
2156                (elmo-imap4-response-value
2157                 (elmo-imap4-send-command-wait
2158                  session
2159                  (list
2160                   (if elmo-imap4-use-uid "uid ")
2161                   "search "
2162                   "CHARSET "
2163                   (elmo-imap4-astring
2164                    (symbol-name charset))
2165                   " "
2166                   (if from-msgs
2167                       (concat
2168                        (if elmo-imap4-use-uid "uid ")
2169                        (cdr (car set-list))
2170                        " ")
2171                     "")
2172                   (if (eq (elmo-filter-type filter)
2173                           'unmatch)
2174                       "not " "")
2175                   (format "%s%s "
2176                           (if (member
2177                                (elmo-filter-key filter)
2178                                imap-search-keys)
2179                               ""
2180                             "header ")
2181                           (elmo-filter-key filter))
2182                   (elmo-imap4-astring
2183                    (encode-mime-charset-string
2184                     (elmo-filter-value filter) charset))))
2185                 'search)))
2186         (when (> length elmo-display-progress-threshold)
2187           (setq total (+ total (car (car set-list))))
2188           (elmo-display-progress
2189            'elmo-imap4-search "Searching..."
2190            (/ (* total 100) length)))
2191         (setq set-list (cdr set-list)
2192               end (null set-list)))
2193       results))))
2194
2195 (defun elmo-imap4-search-internal (folder session condition from-msgs)
2196   (let (result)
2197     (cond
2198      ((vectorp condition)
2199       (setq result (elmo-imap4-search-internal-primitive
2200                     folder session condition from-msgs)))
2201      ((eq (car condition) 'and)
2202       (setq result (elmo-imap4-search-internal folder session (nth 1 condition)
2203                                                from-msgs)
2204             result (elmo-list-filter result
2205                                      (elmo-imap4-search-internal
2206                                       folder session (nth 2 condition)
2207                                       from-msgs))))
2208      ((eq (car condition) 'or)
2209       (setq result (elmo-imap4-search-internal
2210                     folder session (nth 1 condition) from-msgs)
2211             result (elmo-uniq-list
2212                     (nconc result
2213                            (elmo-imap4-search-internal
2214                             folder session (nth 2 condition) from-msgs)))
2215             result (sort result '<))))))
2216
2217 (luna-define-method elmo-folder-search :around ((folder elmo-imap4-folder)
2218                                                 condition &optional numbers)
2219   (if (elmo-folder-plugged-p folder)
2220       (save-excursion
2221         (let ((session (elmo-imap4-get-session folder)))
2222           (elmo-imap4-session-select-mailbox
2223            session
2224            (elmo-imap4-folder-mailbox-internal folder))
2225           (elmo-imap4-search-internal folder session condition numbers)))
2226     (luna-call-next-method)))
2227
2228 (luna-define-method elmo-folder-msgdb-create-plugged
2229   ((folder elmo-imap4-folder) numbers &rest args)
2230   (when numbers
2231     (let ((session (elmo-imap4-get-session folder))
2232           (headers
2233            (append
2234             '("Subject" "From" "To" "Cc" "Date"
2235               "Message-Id" "References" "In-Reply-To")
2236             elmo-msgdb-extra-fields))
2237           (total 0)
2238           (length (length numbers))
2239           rfc2060 set-list)
2240       (setq rfc2060 (memq 'imap4rev1
2241                           (elmo-imap4-session-capability-internal
2242                            session)))
2243       (message "Getting overview...")
2244       (elmo-imap4-session-select-mailbox
2245        session (elmo-imap4-folder-mailbox-internal folder))
2246       (setq set-list (elmo-imap4-make-number-set-list
2247                       numbers
2248                       elmo-imap4-overview-fetch-chop-length))
2249       ;; Setup callback.
2250       (with-current-buffer (elmo-network-session-buffer session)
2251         (setq elmo-imap4-current-msgdb nil
2252               elmo-imap4-seen-messages nil
2253               elmo-imap4-fetch-callback 'elmo-imap4-fetch-callback-1
2254               elmo-imap4-fetch-callback-data (cons args
2255                                                    (elmo-folder-use-flag-p
2256                                                     folder)))
2257         (while set-list
2258           (elmo-imap4-send-command-wait
2259            session
2260            ;; get overview entity from IMAP4
2261            (format "%sfetch %s (%s rfc822.size flags)"
2262                    (if elmo-imap4-use-uid "uid " "")
2263                    (cdr (car set-list))
2264                    (if rfc2060
2265                        (format "body.peek[header.fields %s]" headers)
2266                      (format "%s" headers))))
2267           (when (> length elmo-display-progress-threshold)
2268             (setq total (+ total (car (car set-list))))
2269             (elmo-display-progress
2270              'elmo-imap4-msgdb-create "Getting overview..."
2271              (/ (* total 100) length)))
2272           (setq set-list (cdr set-list)))
2273         (message "Getting overview...done")
2274         (when elmo-imap4-seen-messages
2275           (elmo-imap4-set-flag folder elmo-imap4-seen-messages "\\Seen"))
2276         elmo-imap4-current-msgdb))))
2277
2278 (luna-define-method elmo-folder-unmark-important-plugged
2279   ((folder elmo-imap4-folder) numbers)
2280   (elmo-imap4-set-flag folder numbers "\\Flagged" 'remove))
2281
2282 (luna-define-method elmo-folder-mark-as-important-plugged
2283   ((folder elmo-imap4-folder) numbers)
2284   (elmo-imap4-set-flag folder numbers "\\Flagged"))
2285
2286 (luna-define-method elmo-folder-unmark-read-plugged
2287   ((folder elmo-imap4-folder) numbers)
2288   (elmo-imap4-set-flag folder numbers "\\Seen" 'remove))
2289
2290 (luna-define-method elmo-folder-mark-as-read-plugged
2291   ((folder elmo-imap4-folder) numbers)
2292   (elmo-imap4-set-flag folder numbers "\\Seen"))
2293
2294 (luna-define-method elmo-message-use-cache-p ((folder elmo-imap4-folder)
2295                                               number)
2296   elmo-imap4-use-cache)
2297
2298 (luna-define-method elmo-folder-message-appendable-p ((folder elmo-imap4-folder))
2299   (if (elmo-folder-plugged-p folder)
2300       (not (elmo-imap4-session-read-only-internal
2301             (elmo-imap4-get-session folder)))
2302     elmo-enable-disconnected-operation)) ; offline refile.
2303
2304 (luna-define-method elmo-folder-check-plugged ((folder elmo-imap4-folder))
2305   (let ((session (elmo-imap4-get-session folder 'if-exists)))
2306     (when session
2307       (if (string=
2308            (elmo-imap4-session-current-mailbox-internal session)
2309            (elmo-imap4-folder-mailbox-internal folder))
2310           (if elmo-imap4-use-select-to-update-status
2311               (elmo-imap4-session-select-mailbox
2312                session
2313                (elmo-imap4-folder-mailbox-internal folder)
2314                'force)
2315             (elmo-imap4-session-check session))))))
2316
2317 (defsubst elmo-imap4-folder-diff-plugged (folder)
2318   (let ((session (elmo-imap4-get-session folder))
2319         messages new unread response killed)
2320 ;;; (elmo-imap4-commit spec)
2321     (with-current-buffer (elmo-network-session-buffer session)
2322       (setq elmo-imap4-status-callback nil)
2323       (setq elmo-imap4-status-callback-data nil))
2324     (setq response
2325           (elmo-imap4-send-command-wait session
2326                                         (list
2327                                          "status "
2328                                          (elmo-imap4-mailbox
2329                                           (elmo-imap4-folder-mailbox-internal
2330                                            folder))
2331                                          " (recent unseen messages)")))
2332     (setq response (elmo-imap4-response-value response 'status))
2333     (setq messages (elmo-imap4-response-value response 'messages))
2334     (setq killed (elmo-msgdb-killed-list-load (elmo-folder-msgdb-path folder)))
2335     (if killed
2336         (setq messages (- messages
2337                           (elmo-msgdb-killed-list-length
2338                            killed))))
2339     (setq new (elmo-imap4-response-value response 'recent)
2340           unread (elmo-imap4-response-value response 'unseen))
2341     (if (< unread new) (setq new unread))
2342     (list new unread messages)))
2343
2344 (luna-define-method elmo-folder-diff-plugged ((folder elmo-imap4-folder))
2345   (elmo-imap4-folder-diff-plugged folder))
2346
2347 (luna-define-method elmo-folder-diff-async ((folder elmo-imap4-folder)
2348                                             &optional number-alist)
2349   (setq elmo-imap4-server-diff-async-callback
2350         elmo-folder-diff-async-callback)
2351   (setq elmo-imap4-server-diff-async-callback-data
2352         elmo-folder-diff-async-callback-data)
2353   (elmo-imap4-server-diff-async folder))
2354
2355 (luna-define-method elmo-folder-open :around ((folder elmo-imap4-folder)
2356                                               &optional load-msgdb)
2357   (if (elmo-folder-plugged-p folder)
2358       (let (session mailbox msgdb response tag)
2359         (condition-case err
2360             (progn
2361               (setq session (elmo-imap4-get-session folder)
2362                     mailbox (elmo-imap4-folder-mailbox-internal folder)
2363                     tag (elmo-imap4-send-command session
2364                                                  (list "select "
2365                                                        (elmo-imap4-mailbox
2366                                                         mailbox))))
2367               (if load-msgdb
2368                   (setq msgdb (elmo-msgdb-load folder)))
2369               (elmo-folder-set-killed-list-internal
2370                folder
2371                (elmo-msgdb-killed-list-load (elmo-folder-msgdb-path folder)))
2372               (setq response (elmo-imap4-read-response session tag)))
2373           (quit
2374            (if response
2375                (elmo-imap4-session-set-current-mailbox-internal
2376                 session mailbox)
2377              (and session
2378                   (elmo-imap4-session-set-current-mailbox-internal
2379                    session nil))))
2380           (error
2381            (if response
2382                (elmo-imap4-session-set-current-mailbox-internal
2383                 session mailbox)
2384              (and session
2385                   (elmo-imap4-session-set-current-mailbox-internal
2386                    session nil)))))
2387         (if load-msgdb
2388             (elmo-folder-set-msgdb-internal
2389              folder
2390              (or msgdb (elmo-msgdb-load folder)))))
2391     (luna-call-next-method)))
2392
2393 ;; elmo-folder-open-internal: do nothing.
2394
2395 (luna-define-method elmo-find-fetch-strategy
2396   ((folder elmo-imap4-folder) entity &optional ignore-cache)
2397   (let ((number (elmo-msgdb-overview-entity-get-number entity))
2398         cache-file size message-id)
2399     (setq size (elmo-msgdb-overview-entity-get-size entity))
2400     (setq message-id (elmo-msgdb-overview-entity-get-id entity))
2401     (setq cache-file (elmo-file-cache-get message-id))
2402     (if (or ignore-cache
2403             (null (elmo-file-cache-status cache-file)))
2404         (if (and elmo-message-fetch-threshold
2405                  (integerp size)
2406                  (>= size elmo-message-fetch-threshold)
2407                  (or (not elmo-message-fetch-confirm)
2408                      (not (prog1 (y-or-n-p
2409                                   (format
2410                                    "Fetch entire message at once? (%dbytes)"
2411                                    size))
2412                             (message "")))))
2413             ;; Fetch message as imap message.
2414             (elmo-make-fetch-strategy 'section
2415                                       nil
2416                                       (elmo-message-use-cache-p
2417                                        folder number)
2418                                       (elmo-file-cache-path
2419                                        cache-file))
2420           ;; Don't use existing cache and fetch entire message at once.
2421           (elmo-make-fetch-strategy 'entire nil
2422                                     (elmo-message-use-cache-p
2423                                      folder number)
2424                                     (elmo-file-cache-path cache-file)))
2425       ;; Cache found and use it.
2426       (if (not ignore-cache)
2427           (if (eq (elmo-file-cache-status cache-file) 'section)
2428               ;; Fetch message with imap message.
2429               (elmo-make-fetch-strategy 'section
2430                                         t
2431                                         (elmo-message-use-cache-p
2432                                          folder number)
2433                                         (elmo-file-cache-path
2434                                          cache-file))
2435             (elmo-make-fetch-strategy 'entire
2436                                       t
2437                                       (elmo-message-use-cache-p
2438                                        folder number)
2439                                       (elmo-file-cache-path
2440                                        cache-file)))))))
2441
2442 (luna-define-method elmo-folder-create ((folder elmo-imap4-folder))
2443   (elmo-imap4-send-command-wait
2444    (elmo-imap4-get-session folder)
2445    (list "create "
2446          (elmo-imap4-mailbox
2447           (elmo-imap4-folder-mailbox-internal folder)))))
2448
2449 (luna-define-method elmo-folder-append-buffer
2450   ((folder elmo-imap4-folder) unread &optional number)
2451   (if (elmo-folder-plugged-p folder)
2452       (let ((session (elmo-imap4-get-session folder))
2453             send-buffer result)
2454         (elmo-imap4-session-select-mailbox session
2455                                            (elmo-imap4-folder-mailbox-internal
2456                                             folder))
2457         (setq send-buffer (elmo-imap4-setup-send-buffer))
2458         (unwind-protect
2459             (setq result
2460                   (elmo-imap4-send-command-wait
2461                    session
2462                    (list
2463                     "append "
2464                     (elmo-imap4-mailbox (elmo-imap4-folder-mailbox-internal
2465                                          folder))
2466                     (if unread " " " (\\Seen) ")
2467                     (elmo-imap4-buffer-literal send-buffer))))
2468           (kill-buffer send-buffer))
2469         result)
2470     ;; Unplugged
2471     (if elmo-enable-disconnected-operation
2472         (elmo-folder-append-buffer-dop folder unread number)
2473       (error "Unplugged"))))
2474
2475 (eval-when-compile
2476   (defmacro elmo-imap4-identical-system-p (folder1 folder2)
2477     "Return t if FOLDER1 and FOLDER2 are in the same IMAP4 system."
2478     (` (and (string= (elmo-net-folder-server-internal (, folder1))
2479                      (elmo-net-folder-server-internal (, folder2)))
2480             (eq (elmo-net-folder-port-internal (, folder1))
2481                 (elmo-net-folder-port-internal (, folder2)))
2482             (string= (elmo-net-folder-user-internal (, folder1))
2483                      (elmo-net-folder-user-internal (, folder2)))))))
2484
2485 (luna-define-method elmo-folder-append-messages :around
2486   ((folder elmo-imap4-folder) src-folder numbers unread-marks
2487    &optional same-number)
2488   (if (and (eq (elmo-folder-type-internal src-folder) 'imap4)
2489            (elmo-imap4-identical-system-p folder src-folder)
2490            (elmo-folder-plugged-p folder))
2491       ;; Plugged
2492       (prog1
2493           (elmo-imap4-copy-messages src-folder folder numbers)
2494         (elmo-progress-notify 'elmo-folder-move-messages (length numbers)))
2495     (luna-call-next-method)))
2496
2497 (luna-define-method elmo-message-deletable-p ((folder elmo-imap4-folder)
2498                                               number)
2499   (if (elmo-folder-plugged-p folder)
2500       (not (elmo-imap4-session-read-only-internal
2501             (elmo-imap4-get-session folder)))
2502     elmo-enable-disconnected-operation)) ; offline refile.
2503
2504 ;(luna-define-method elmo-message-fetch-unplugged
2505 ;  ((folder elmo-imap4-folder)
2506 ;   number strategy  &optional section outbuf unseen)
2507 ;  (error "%d%s is not cached." number (if section
2508 ;                                         (format "(%s)" section)
2509 ;                                       "")))
2510
2511 (defsubst elmo-imap4-message-fetch (folder number strategy
2512                                            section outbuf unseen)
2513   (let ((session (elmo-imap4-get-session folder))
2514         response)
2515     (elmo-imap4-session-select-mailbox session
2516                                        (elmo-imap4-folder-mailbox-internal
2517                                         folder))
2518     (with-current-buffer (elmo-network-session-buffer session)
2519       (setq elmo-imap4-fetch-callback nil)
2520       (setq elmo-imap4-fetch-callback-data nil))
2521     (unless elmo-inhibit-display-retrieval-progress
2522       (setq elmo-imap4-display-literal-progress t))
2523     (unwind-protect
2524         (setq response
2525               (elmo-imap4-send-command-wait session
2526                                             (format
2527                                              (if elmo-imap4-use-uid
2528                                                  "uid fetch %s body%s[%s]"
2529                                                "fetch %s body%s[%s]")
2530                                              number
2531                                              (if unseen ".peek" "")
2532                                              (or section "")
2533                                              )))
2534       (setq elmo-imap4-display-literal-progress nil))
2535     (unless elmo-inhibit-display-retrieval-progress
2536       (elmo-display-progress 'elmo-imap4-display-literal-progress
2537                              "Retrieving..." 100)  ; remove progress bar.
2538       (message "Retrieving...done."))
2539     (if (setq response (elmo-imap4-response-bodydetail-text
2540                         (elmo-imap4-response-value-all
2541                          response 'fetch)))
2542         (with-current-buffer outbuf
2543           (erase-buffer)
2544           (insert response)
2545           t))))
2546
2547 (luna-define-method elmo-message-fetch-plugged ((folder elmo-imap4-folder)
2548                                                 number strategy
2549                                                 &optional section
2550                                                 outbuf unseen)
2551   (elmo-imap4-message-fetch folder number strategy section outbuf unseen))
2552
2553 (luna-define-method elmo-message-fetch-field ((folder elmo-imap4-folder)
2554                                               number field)
2555   (let ((session (elmo-imap4-get-session folder)))
2556     (elmo-imap4-session-select-mailbox session
2557                                        (elmo-imap4-folder-mailbox-internal
2558                                         folder))
2559     (with-current-buffer (elmo-network-session-buffer session)
2560       (setq elmo-imap4-fetch-callback nil)
2561       (setq elmo-imap4-fetch-callback-data nil))
2562     (with-temp-buffer
2563       (insert
2564        (elmo-imap4-response-bodydetail-text
2565         (elmo-imap4-response-value
2566          (elmo-imap4-send-command-wait session
2567                                        (concat
2568                                         (if elmo-imap4-use-uid
2569                                             "uid ")
2570                                         (format
2571                                          "fetch %s (body.peek[header.fields (%s)])"
2572                                          number field)))
2573          'fetch)))
2574       (elmo-delete-cr-buffer)
2575       (goto-char (point-min))
2576       (std11-field-body (symbol-name field)))))
2577
2578
2579
2580 (require 'product)
2581 (product-provide (provide 'elmo-imap4) (require 'elmo-version))
2582
2583 ;;; elmo-imap4.el ends here