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 ;;; Code:
  42 (require 'elmo-vars)
  43 (require 'elmo-util)
  44 (require 'elmo-date)
  45 (require 'elmo-msgdb)
  46 (require 'elmo-cache)
  47 (require 'elmo)
  48 (require 'elmo-net)
  49 (require 'utf7)
  50 (require 'elmo-mime)
  51
  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 (For STATUS command).")
  56
  57 (defvar elmo-imap4-overview-fetch-chop-length 200
  58   "*Number of overviews to fetch in one request.")
  59
  60 ;; c.f. rfc2683 3.2.1.5 Long Command Lines
  61 ;;
  62 ;; "A client should limit the length of the command lines it generates
  63 ;;  to approximately 1000 octets (including all quoted strings but not
  64 ;;  including literals). If the client is unable to group things into
  65 ;;  ranges so that the command line is within that length, it should
  66 ;;  split the request into multiple commands. The client should use
  67 ;;  literals instead of long quoted strings, in order to keep the command
  68 ;;  length down.
  69 ;;  For its part, a server should allow for a command line of at least
  70 ;;  8000 octets. This provides plenty of leeway for accepting reasonable
  71 ;;  length commands from clients. The server should send a BAD response
  72 ;;  to a command that does not end within the server's maximum accepted
  73 ;;  command length. "
  74
  75 ;; To limit command line length, chop number set.
  76 (defvar elmo-imap4-number-set-chop-length 1000
  77   "*Number of messages to specify as a number-set argument for one request.")
  78
  79 (defvar elmo-imap4-force-login nil
  80   "*Non-nil forces to try 'login' if there is no 'auth' capability in imapd.")
  81
  82 (defvar elmo-imap4-use-select-to-update-status nil
  83   "*Some imapd have to send select command to update status.
  84 \(ex. UW imapd 4.5-BETA?\).  For these imapd, you must set this variable t.")
  85
  86 (defvar elmo-imap4-use-modified-utf7 nil
  87   "*Use mofidied UTF-7 (rfc2060) encoding for IMAP4 folder name.")
  88
  89 (defvar elmo-imap4-use-cache t
  90   "Use cache in imap4 folder.")
  91
  92 (defvar elmo-imap4-extra-namespace-alist
  93   '(("^\\({.*/nntp}\\).*$" . ".")) ; Default is for UW's remote nntp mailbox...
  94   "Extra namespace alist.
  95 A list of cons cell like: (REGEXP . DELIMITER).
  96 REGEXP should have a grouping for namespace prefix.")
  97 ;;
  98 ;;; internal variables
  99 ;;
 100 (defvar elmo-imap4-seq-prefix "elmo-imap4")
 101 (defvar elmo-imap4-seqno 0)
 102 (defvar elmo-imap4-use-uid t
 103   "Use UID as message number.")
 104
 105 (defvar elmo-imap4-current-response nil)
 106 (defvar elmo-imap4-status nil)
 107 (defvar elmo-imap4-reached-tag "elmo-imap40")
 108
 109 ;;; buffer local variables
 110 (defvar elmo-imap4-default-hierarchy-delimiter "/")
 111
 112 (defvar elmo-imap4-server-capability nil)
 113 (defvar elmo-imap4-server-namespace nil)
 114
 115 (defvar elmo-imap4-parsing nil) ; indicates parsing.
 116
 117 (defvar elmo-imap4-fetch-callback nil)
 118 (defvar elmo-imap4-fetch-callback-data nil)
 119 (defvar elmo-imap4-status-callback nil)
 120 (defvar elmo-imap4-status-callback-data nil)
 121
 122 (defvar elmo-imap4-server-diff-async-callback nil)
 123 (defvar elmo-imap4-server-diff-async-callback-data nil)
 124
 125 ;;; progress...(no use?)
 126 (defvar elmo-imap4-count-progress nil)
 127 (defvar elmo-imap4-count-progress-message nil)
 128 (defvar elmo-imap4-progress-count nil)
 129
 130 ;;; XXX Temporal implementation
 131 (defvar elmo-imap4-current-msgdb nil)
 132 (defvar elmo-imap4-seen-messages nil)
 133
 134 (defvar elmo-imap4-local-variables
 135   '(elmo-imap4-status
 136     elmo-imap4-current-response
 137     elmo-imap4-seqno
 138     elmo-imap4-parsing
 139     elmo-imap4-reached-tag
 140     elmo-imap4-count-progress
 141     elmo-imap4-count-progress-message
 142     elmo-imap4-progress-count
 143     elmo-imap4-fetch-callback
 144     elmo-imap4-fetch-callback-data
 145     elmo-imap4-status-callback
 146     elmo-imap4-status-callback-data
 147     elmo-imap4-current-msgdb
 148     elmo-imap4-seen-messages))
 149
 150 ;;;;
 151
 152 (defconst elmo-imap4-quoted-specials-list '(?\\ ?\"))
 153
 154 (defconst elmo-imap4-non-atom-char-regex
 155   (eval-when-compile
 156     (concat "[^" "]!#$&'+,./0-9:;<=>?@A-Z[^_`a-z|}~-" "]")))
 157
 158 (defconst elmo-imap4-non-text-char-regex
 159   (eval-when-compile
 160     (concat "[^"
 161             "]\x01-\x09\x0b\x0c\x0e-\x1f\x7f !\"#$%&'()*+,./0-9:;<=>?@A-Z[\\^_`a-z{|}~-"
 162             "]")))
 163
 164 (defconst elmo-imap4-literal-threshold 1024
 165  "Limitation of characters that can be used in a quoted string.")
 166
 167 (defconst elmo-imap4-flag-specs '((important "\\Flagged")
 168                                   (read "\\Seen")
 169                                   (unread "\\Seen" 'remove)
 170                                   (answered "\\Answered")
 171                                   ;; draft-melnikov-imap-keywords-03.txt
 172                                   (forwarded "$Forwarded")
 173                                   (work "$Work")
 174                                   (personal "$Personal")
 175                                   (shouldreply "$ShouldReply")))
 176
 177 (defconst elmo-imap4-folder-name-syntax
 178   `(mailbox
 179     (?: [user "^[A-Za-z]"] (?/ [auth ".+"]))
 180     ,@elmo-net-folder-name-syntax))
 181
 182 ;; For debugging.
 183 (defvar elmo-imap4-debug nil
 184   "Non-nil forces IMAP4 folder as debug mode.
 185 Debug information is inserted in the buffer \"*IMAP4 DEBUG*\"")
 186
 187 (defvar elmo-imap4-debug-inhibit-logging nil)
 188
 189 ;;; ELMO IMAP4 folder
 190 (eval-and-compile
 191   (luna-define-class elmo-imap4-folder (elmo-net-folder)
 192                      (mailbox))
 193   (luna-define-internal-accessors 'elmo-imap4-folder))
 194
 195 ;;; Session
 196 (eval-and-compile
 197   (luna-define-class elmo-imap4-session (elmo-network-session)
 198                      (capability current-mailbox read-only flags))
 199   (luna-define-internal-accessors 'elmo-imap4-session))
 200
 201 (defmacro elmo-imap4-session-capable-p (session capability)
 202   `(memq ,capability (elmo-imap4-session-capability-internal ,session)))
 203
 204 ;;; MIME-ELMO-IMAP Location
 205 (eval-and-compile
 206   (luna-define-class mime-elmo-imap-location
 207                      (mime-imap-location)
 208                      (folder number rawbuf strategy))
 209   (luna-define-internal-accessors 'mime-elmo-imap-location))
 210
 211 ;;; Debug
 212 (defmacro elmo-imap4-debug (message &rest args)
 213   `(if elmo-imap4-debug
 214        (elmo-imap4-debug-1 ,message ,@args)))
 215
 216 (defun elmo-imap4-debug-1 (message &rest args)
 217   (with-current-buffer (get-buffer-create "*IMAP4 DEBUG*")
 218     (goto-char (point-max))
 219     (if elmo-imap4-debug-inhibit-logging
 220         (insert "NO LOGGING\n")
 221       (insert (apply 'format message args) "\n"))))
 222
 223 (defsubst elmo-imap4-decode-folder-string (string)
 224   (if elmo-imap4-use-modified-utf7
 225       (utf7-decode string 'imap)
 226     string))
 227
 228 (defsubst elmo-imap4-encode-folder-string (string)
 229   (if elmo-imap4-use-modified-utf7
 230       (utf7-encode string 'imap)
 231     string))
 232
 233 ;;; Response
 234
 235 (defmacro elmo-imap4-response-continue-req-p (response)
 236   "Returns non-nil if RESPONSE is '+' response."
 237   `(assq 'continue-req ,response))
 238
 239 (defmacro elmo-imap4-response-ok-p (response)
 240   "Returns non-nil if RESPONSE is an 'OK' response."
 241   `(assq 'ok ,response))
 242
 243 (defmacro elmo-imap4-response-bye-p (response)
 244   "Returns non-nil if RESPONSE is an 'BYE' response."
 245   `(assq 'bye ,response))
 246
 247 (defmacro elmo-imap4-response-garbage-p (response)
 248   "Returns non-nil if RESPONSE is an 'garbage' response."
 249   `(assq 'garbage ,response))
 250
 251 (defmacro elmo-imap4-response-value (response symbol)
 252   "Get value of the SYMBOL from RESPONSE."
 253   `(nth 1 (assq ,symbol ,response)))
 254
 255 (defsubst elmo-imap4-response-value-all (response symbol)
 256   "Get all value of the SYMBOL from RESPONSE."
 257   (let (matched)
 258     (while response
 259       (if (eq (car (car response)) symbol)
 260           (setq matched (nconc matched (nth 1 (car response)))))
 261       (setq response (cdr response)))
 262     matched))
 263
 264 (defmacro elmo-imap4-response-error-text (response)
 265   "Returns text of NO, BAD, BYE response."
 266   `(nth 1 (or (elmo-imap4-response-value ,response 'no)
 267               (elmo-imap4-response-value ,response 'bad)
 268               (elmo-imap4-response-value ,response 'bye))))
 269
 270 (defmacro elmo-imap4-response-bodydetail-text (response)
 271   "Returns text of BODY[section]<partial>."
 272   `(nth 3 (assq 'bodydetail ,response)))
 273
 274 ;;; Session commands.
 275
 276 ; (defun elmo-imap4-send-command-wait (session command)
 277 ;   "Send COMMAND to the SESSION and wait for response.
 278 ; Returns RESPONSE (parsed lisp object) of IMAP session."
 279 ;   (elmo-imap4-read-response session
 280 ;                           (elmo-imap4-send-command
 281 ;                            session
 282 ;                            command)))
 283
 284 (defun elmo-imap4-send-command-wait (session command)
 285   "Send COMMAND to the SESSION.
 286 Returns RESPONSE (parsed lisp object) of IMAP session.
 287 If response is not `OK', causes error with IMAP response text."
 288   (elmo-imap4-accept-ok session
 289                         (elmo-imap4-send-command
 290                          session
 291                          command)))
 292
 293 (defun elmo-imap4-send-command (session command)
 294   "Send COMMAND to the SESSION.
 295 Returns a TAG string which is assigned to the COMMAND."
 296   (let* ((command-args (if (listp command)
 297                            command
 298                          (list command)))
 299          (process (elmo-network-session-process-internal session))
 300          cmdstr tag token kind)
 301     (with-current-buffer (process-buffer process)
 302       (setq tag (concat elmo-imap4-seq-prefix
 303                         (number-to-string
 304                          (setq elmo-imap4-seqno (+ 1 elmo-imap4-seqno)))))
 305       (setq cmdstr (concat tag " "))
 306       ;; (erase-buffer) No need.
 307       (goto-char (point-min))
 308       (when (elmo-imap4-response-bye-p elmo-imap4-current-response)
 309         (elmo-imap4-process-bye session))
 310       (setq elmo-imap4-current-response nil)
 311       (when elmo-imap4-parsing
 312         (message "Waiting for IMAP response...")
 313         (accept-process-output (elmo-network-session-process-internal
 314                                 session))
 315         (message "Waiting for IMAP response...done"))
 316       (setq elmo-imap4-parsing t)
 317       (elmo-imap4-debug "<-(%s)- %s" tag command)
 318       (while (setq token (car command-args))
 319         (cond ((stringp token)   ; formatted
 320                (setq cmdstr (concat cmdstr token)))
 321               ((listp token)     ; unformatted
 322                (setq kind (car token))
 323                (cond ((eq kind 'atom)
 324                       (setq cmdstr (concat cmdstr (nth 1 token))))
 325                      ((eq kind 'quoted)
 326                       (setq cmdstr (concat
 327                                     cmdstr
 328                                     (elmo-imap4-format-quoted (nth 1 token)))))
 329                      ((eq kind 'literal)
 330                       (if (elmo-imap4-session-capable-p session 'literal+)
 331                           ;; rfc2088
 332                           (progn
 333                             (setq cmdstr (concat cmdstr
 334                                                  (format "{%d+}" (nth 2 token))
 335                                                  "\r\n"))
 336                             (process-send-string process cmdstr)
 337                             (setq cmdstr nil))
 338                         (setq cmdstr (concat cmdstr
 339                                              (format "{%d}" (nth 2 token))
 340                                              "\r\n"))
 341                         (process-send-string process cmdstr)
 342                         (setq cmdstr nil)
 343                         (elmo-imap4-accept-continue-req session))
 344                       (cond ((stringp (nth 1 token))
 345                              (setq cmdstr (nth 1 token)))
 346                             ((bufferp (nth 1 token))
 347                              (with-current-buffer (nth 1 token)
 348                                (process-send-region
 349                                 process
 350                                 (point-min)
 351                                 (+ (point-min) (nth 2 token)))))
 352                             (t
 353                              (error "Wrong argument for literal"))))
 354                      (t
 355                       (error "Unknown token kind %s" kind))))
 356               (t
 357                (error "Invalid argument")))
 358         (setq command-args (cdr command-args)))
 359       (process-send-string process (concat cmdstr "\r\n"))
 360       tag)))
 361
 362 (defun elmo-imap4-send-string (session string)
 363   "Send STRING to the SESSION."
 364   (with-current-buffer (process-buffer
 365                         (elmo-network-session-process-internal session))
 366     (setq elmo-imap4-current-response nil)
 367     (goto-char (point-min))
 368     (elmo-imap4-debug "<-- %s" string)
 369     (process-send-string (elmo-network-session-process-internal session)
 370                          string)
 371     (process-send-string (elmo-network-session-process-internal session)
 372                          "\r\n")))
 373
 374 (defun elmo-imap4-read-response (session tag)
 375   "Read parsed response from SESSION.
 376 TAG is the tag of the command"
 377   (with-current-buffer (process-buffer
 378                         (elmo-network-session-process-internal session))
 379     (while (not (or (string= tag elmo-imap4-reached-tag)
 380                     (elmo-imap4-response-bye-p elmo-imap4-current-response)
 381                     (when (elmo-imap4-response-garbage-p
 382                            elmo-imap4-current-response)
 383                       (message "Garbage response: %s"
 384                                (elmo-imap4-response-value
 385                                 elmo-imap4-current-response
 386                                 'garbage))
 387                       t)))
 388       (when (memq (process-status
 389                    (elmo-network-session-process-internal session))
 390                   '(open run))
 391         (accept-process-output (elmo-network-session-process-internal session)
 392                                1)))
 393     (elmo-imap4-debug "=>%s" (prin1-to-string elmo-imap4-current-response))
 394     (setq elmo-imap4-parsing nil)
 395     elmo-imap4-current-response))
 396
 397 (defsubst elmo-imap4-read-untagged (process)
 398   (with-current-buffer (process-buffer process)
 399     (while (not elmo-imap4-current-response)
 400       (accept-process-output process 1))
 401     (elmo-imap4-debug "=>%s" (prin1-to-string elmo-imap4-current-response))
 402     elmo-imap4-current-response))
 403
 404 (defun elmo-imap4-read-continue-req (session)
 405   "Returns a text following to continue-req in SESSION.
 406 If response is not `+' response, returns nil."
 407   (elmo-imap4-response-value
 408    (elmo-imap4-read-untagged
 409     (elmo-network-session-process-internal session))
 410    'continue-req))
 411
 412 (defun elmo-imap4-process-bye (session)
 413   (with-current-buffer (elmo-network-session-buffer session)
 414     (let ((r elmo-imap4-current-response))
 415       (setq elmo-imap4-current-response nil)
 416       (elmo-network-close-session session)
 417       (signal 'elmo-imap4-bye-error
 418               (list (concat (elmo-imap4-response-error-text r))
 419                     "Try Again")))))
 420
 421 (defun elmo-imap4-accept-continue-req (session)
 422   "Returns non-nil if `+' (continue-req) response is arrived in SESSION.
 423 If response is not `+' response, cause an error."
 424   (let (response)
 425     (setq response
 426           (elmo-imap4-read-untagged
 427            (elmo-network-session-process-internal session)))
 428     (or (elmo-imap4-response-continue-req-p response)
 429         (error "IMAP error: %s"
 430                (or (elmo-imap4-response-error-text response)
 431                    "No continut-req from server.")))))
 432
 433 (defun elmo-imap4-read-ok (session tag)
 434   "Returns non-nil if `OK' response of the command with TAG is arrived
 435 in SESSION. If response is not `OK' response, returns nil."
 436   (elmo-imap4-response-ok-p
 437    (elmo-imap4-read-response session tag)))
 438
 439 (defun elmo-imap4-accept-ok (session tag)
 440   "Accept only `OK' response from SESSION.
 441 If response is not `OK' response, causes error with IMAP response text."
 442   (let ((response (elmo-imap4-read-response session tag)))
 443     (if (elmo-imap4-response-ok-p response)
 444         response
 445       (if (elmo-imap4-response-bye-p response)
 446           (elmo-imap4-process-bye session)
 447         (error "IMAP error: %s"
 448                (or (elmo-imap4-response-error-text response)
 449                    "No `OK' response from server."))))))
 450
 451 ;;; MIME-ELMO-IMAP Location
 452 (luna-define-method mime-imap-location-section-body ((location
 453                                                       mime-elmo-imap-location)
 454                                                      section)
 455   (if (and (stringp section)
 456            (string= section "HEADER"))
 457       ;; Even in the section mode, header fields should be saved to the
 458       ;; raw buffer .
 459       (with-current-buffer (mime-elmo-imap-location-rawbuf-internal location)
 460         (erase-buffer)
 461         (elmo-message-fetch
 462          (mime-elmo-imap-location-folder-internal location)
 463          (mime-elmo-imap-location-number-internal location)
 464          (mime-elmo-imap-location-strategy-internal location)
 465          'unseen
 466          section)
 467         (buffer-string))
 468     (elmo-message-fetch-string
 469      (mime-elmo-imap-location-folder-internal location)
 470      (mime-elmo-imap-location-number-internal location)
 471      (mime-elmo-imap-location-strategy-internal location)
 472      'unseen
 473      section)))
 474
 475
 476 (luna-define-method mime-imap-location-bodystructure
 477   ((location mime-elmo-imap-location))
 478   (elmo-message-fetch-bodystructure
 479    (mime-elmo-imap-location-folder-internal location)
 480    (mime-elmo-imap-location-number-internal location)
 481    (mime-elmo-imap-location-strategy-internal location)))
 482
 483 (luna-define-method mime-imap-location-fetch-entity-p
 484   ((location mime-elmo-imap-location) entity)
 485   (or (not elmo-message-displaying) ; Fetching entity to save or force display.
 486       ;; cache exists
 487       (file-exists-p
 488        (expand-file-name
 489         (mmimap-entity-section (mime-entity-node-id-internal entity))
 490         (elmo-fetch-strategy-cache-path
 491          (mime-elmo-imap-location-strategy-internal location))))
 492       ;; not too large to fetch.
 493       (> elmo-message-fetch-threshold
 494          (or (mime-imap-entity-size-internal entity) 0))))
 495
 496 ;;;
 497
 498 (defun elmo-imap4-session-check (session)
 499   (with-current-buffer (elmo-network-session-buffer session)
 500     (setq elmo-imap4-fetch-callback nil)
 501     (setq elmo-imap4-fetch-callback-data nil))
 502   (elmo-imap4-send-command session "check"))
 503
 504 (defun elmo-imap4-atom-p (string)
 505   "Return t if STRING is an atom defined in rfc2060."
 506   (if (string= string "")
 507       nil
 508     (save-match-data
 509       (not (string-match elmo-imap4-non-atom-char-regex string)))))
 510
 511 (defun elmo-imap4-quotable-p (string)
 512   "Return t if STRING can be formatted as a quoted defined in rfc2060."
 513   (save-match-data
 514     (not (string-match elmo-imap4-non-text-char-regex string))))
 515
 516 (defun elmo-imap4-nil (string)
 517   "Return a list represents the special atom \"NIL\" defined in rfc2060, \
 518 if STRING is nil.
 519 Otherwise return nil."
 520   (if (eq string nil)
 521       (list 'atom "NIL")))
 522
 523 (defun elmo-imap4-atom (string)
 524   "Return a list represents STRING as an atom defined in rfc2060.
 525 Return nil if STRING is not an atom.  See `elmo-imap4-atom-p'."
 526   (if (elmo-imap4-atom-p string)
 527       (list 'atom string)))
 528
 529 (defun elmo-imap4-quoted (string)
 530   "Return a list represents STRING as a quoted defined in rfc2060.
 531 Return nil if STRING can not be formatted as a quoted.  See `elmo-imap4-quotable-p'."
 532   (if (elmo-imap4-quotable-p string)
 533       (list 'quoted string)))
 534
 535 (defun elmo-imap4-literal-1 (string-or-buffer length)
 536   "Internal function for `elmo-imap4-literal' and `elmo-imap4-buffer-literal'.
 537 Return a list represents STRING-OR-BUFFER as a literal defined in rfc2060.
 538 STRING-OR-BUFFER must be an encoded string or a single-byte string or a single-byte buffer.
 539 LENGTH must be the number of octets for STRING-OR-BUFFER."
 540   (list 'literal string-or-buffer length))
 541
 542 (defun elmo-imap4-literal (string)
 543   "Return a list represents STRING as a literal defined in rfc2060.
 544 STRING must be an encoded or a single-byte string."
 545   (elmo-imap4-literal-1 string (length string)))
 546
 547 (defun elmo-imap4-buffer-literal (buffer)
 548   "Return a list represents BUFFER as a literal defined in rfc2060.
 549 BUFFER must be a single-byte buffer."
 550   (elmo-imap4-literal-1 buffer (with-current-buffer buffer
 551                                  (buffer-size))))
 552
 553 (defun elmo-imap4-string-1 (string length)
 554   "Internal function for `elmo-imap4-string' and `elmo-imap4-buffer-string'.
 555 Return a list represents STRING as a string defined in rfc2060.
 556 STRING must be an encoded or a single-byte string.
 557 LENGTH must be the number of octets for STRING."
 558   (or (elmo-imap4-quoted string)
 559       (elmo-imap4-literal-1 string length)))
 560
 561 (defun elmo-imap4-string (string)
 562   "Return a list represents STRING as a string defined in rfc2060.
 563 STRING must be an encoded or a single-byte string."
 564   (let ((length (length string)))
 565     (if (< elmo-imap4-literal-threshold length)
 566         (elmo-imap4-literal-1 string length)
 567       (elmo-imap4-string-1 string length))))
 568
 569 (defun elmo-imap4-buffer-string (buffer)
 570   "Return a list represents BUFFER as a string defined in rfc2060.
 571 BUFFER must be a single-byte buffer."
 572   (let ((length (with-current-buffer buffer
 573                   (buffer-size))))
 574     (if (< elmo-imap4-literal-threshold length)
 575         (elmo-imap4-literal-1 buffer length)
 576       (elmo-imap4-string-1 (with-current-buffer buffer
 577                              (buffer-string))
 578                            length))))
 579
 580 (defun elmo-imap4-astring-1 (string length)
 581   "Internal function for `elmo-imap4-astring' and `elmo-imap4-buffer-astring'.
 582 Return a list represents STRING as an astring defined in rfc2060.
 583 STRING must be an encoded or a single-byte string.
 584 LENGTH must be the number of octets for STRING."
 585   (or (elmo-imap4-atom string)
 586       (elmo-imap4-string-1 string length)))
 587
 588 (defun elmo-imap4-astring (string)
 589   "Return a list represents STRING as an astring defined in rfc2060.
 590 STRING must be an encoded or a single-byte string."
 591   (let ((length (length string)))
 592     (if (< elmo-imap4-literal-threshold length)
 593         (elmo-imap4-literal-1 string length)
 594       (elmo-imap4-astring-1 string length))))
 595
 596 (defun elmo-imap4-buffer-astring (buffer)
 597   "Return a list represents BUFFER as an astring defined in rfc2060.
 598 BUFFER must be a single-byte buffer."
 599   (let ((length (with-current-buffer buffer
 600                   (buffer-size))))
 601     (if (< elmo-imap4-literal-threshold length)
 602         (elmo-imap4-literal-1 buffer length)
 603       (elmo-imap4-astring-1 (with-current-buffer buffer
 604                               (buffer-string))
 605                             length))))
 606
 607 (defun elmo-imap4-nstring (string)
 608   "Return a list represents STRING as a nstring defined in rfc2060.
 609 STRING must be an encoded or a single-byte string."
 610    (or (elmo-imap4-nil string)
 611        (elmo-imap4-string string)))
 612
 613 (defun elmo-imap4-buffer-nstring (buffer)
 614   "Return a list represents BUFFER as a nstring defined in rfc2060.
 615 BUFFER must be a single-byte buffer."
 616    (or (elmo-imap4-nil buffer)
 617        (elmo-imap4-buffer-string buffer)))
 618
 619 (defalias 'elmo-imap4-mailbox 'elmo-imap4-astring)
 620 (defalias 'elmo-imap4-field-body 'elmo-imap4-astring)
 621 (defalias 'elmo-imap4-userid 'elmo-imap4-astring)
 622 (defalias 'elmo-imap4-password 'elmo-imap4-astring)
 623
 624 (defun elmo-imap4-format-quoted (string)
 625   "Return STRING in a form of the quoted-string defined in rfc2060."
 626   (concat "\""
 627           (std11-wrap-as-quoted-pairs string elmo-imap4-quoted-specials-list)
 628           "\""))
 629
 630 (defsubst elmo-imap4-response-get-selectable-mailbox-list (response)
 631   (delq nil
 632         (mapcar
 633          (lambda (entry)
 634            (if (and (eq 'list (car entry))
 635                     (not (elmo-string-member-ignore-case "\\Noselect" (nth 1 (nth 1 entry)))))
 636                (car (nth 1 entry))))
 637          response)))
 638
 639 (luna-define-method elmo-message-fetch-bodystructure ((folder
 640                                                        elmo-imap4-folder)
 641                                                       number strategy)
 642   (if (elmo-fetch-strategy-use-cache strategy)
 643       (elmo-object-load
 644        (elmo-file-cache-expand-path
 645         (elmo-fetch-strategy-cache-path strategy)
 646         "bodystructure"))
 647     (let ((session (elmo-imap4-get-session folder))
 648           bodystructure)
 649       (elmo-imap4-session-select-mailbox
 650        session
 651        (elmo-imap4-folder-mailbox-internal folder))
 652       (with-current-buffer (elmo-network-session-buffer session)
 653         (setq elmo-imap4-fetch-callback nil)
 654         (setq elmo-imap4-fetch-callback-data nil))
 655       (prog1 (setq bodystructure
 656                    (elmo-imap4-response-value
 657                     (elmo-imap4-response-value
 658                      (elmo-imap4-send-command-wait
 659                       session
 660                       (format
 661                        (if elmo-imap4-use-uid
 662                            "uid fetch %s bodystructure"
 663                          "fetch %s bodystructure")
 664                        number))
 665                      'fetch)
 666                     'bodystructure))
 667         (when (elmo-fetch-strategy-save-cache strategy)
 668           (elmo-file-cache-delete
 669            (elmo-fetch-strategy-cache-path strategy))
 670           (elmo-object-save
 671            (elmo-file-cache-expand-path
 672             (elmo-fetch-strategy-cache-path strategy)
 673             "bodystructure")
 674            bodystructure))))))
 675
 676 ;;; Backend methods.
 677 (luna-define-method elmo-create-folder-plugged ((folder elmo-imap4-folder))
 678   (elmo-imap4-send-command-wait
 679    (elmo-imap4-get-session folder)
 680    (list "create " (elmo-imap4-mailbox
 681                     (elmo-imap4-folder-mailbox-internal folder)))))
 682
 683 (defun elmo-imap4-get-session (folder &optional if-exists)
 684   (elmo-network-get-session 'elmo-imap4-session
 685                             (concat
 686                              (if (elmo-folder-biff-internal folder)
 687                                  "BIFF-")
 688                              "IMAP")
 689                             folder if-exists))
 690
 691 (defun elmo-imap4-session-select-mailbox (session mailbox
 692                                                   &optional force no-error)
 693   "Select MAILBOX in SESSION.
 694 If optional argument FORCE is non-nil, select mailbox even if current mailbox
 695 is same as MAILBOX.
 696 If second optional argument NO-ERROR is non-nil, don't cause an error when
 697 selecting folder was failed.
 698 If NO-ERROR is 'notify-bye, only BYE response is reported as error.
 699 Returns response value if selecting folder succeed. "
 700   (when (or force
 701             (not (string=
 702                   (elmo-imap4-session-current-mailbox-internal session)
 703                   mailbox)))
 704     (let (response result)
 705       (unwind-protect
 706           (setq response
 707                 (elmo-imap4-read-response
 708                  session
 709                  (elmo-imap4-send-command
 710                   session
 711                   (list
 712                    "select "
 713                    (elmo-imap4-mailbox mailbox)))))
 714         (if (setq result (elmo-imap4-response-ok-p response))
 715             (progn
 716               (elmo-imap4-session-set-current-mailbox-internal session mailbox)
 717               (elmo-imap4-session-set-read-only-internal
 718                session
 719                (nth 1 (assq 'read-only (assq 'ok response))))
 720               (elmo-imap4-session-set-flags-internal
 721                session
 722                (nth 1 (or (assq 'permanentflags response)
 723                           (assq 'flags response)))))
 724           (elmo-imap4-session-set-current-mailbox-internal session nil)
 725           (if (and (eq no-error 'notify-bye)
 726                    (elmo-imap4-response-bye-p response))
 727               (elmo-imap4-process-bye session)
 728             (unless no-error
 729               (error "%s"
 730                      (or (elmo-imap4-response-error-text response)
 731                          (format "Select %s failed" mailbox)))))))
 732       (and result response))))
 733
 734 (defun elmo-imap4-check-validity (spec validity-file)
 735 ;;; Not used.
 736 ;;;(elmo-imap4-send-command-wait
 737 ;;;(elmo-imap4-get-session spec)
 738 ;;;(list "status "
 739 ;;;      (elmo-imap4-mailbox
 740 ;;;       (elmo-imap4-spec-mailbox spec))
 741 ;;;      " (uidvalidity)")))
 742   )
 743
 744 (defun elmo-imap4-sync-validity  (spec validity-file)
 745   ;; Not used.
 746   )
 747
 748 (defun elmo-imap4-list (folder flag)
 749   (let ((session (elmo-imap4-get-session folder)))
 750     (elmo-imap4-session-select-mailbox
 751      session
 752      (elmo-imap4-folder-mailbox-internal folder))
 753     (elmo-imap4-response-value
 754      (elmo-imap4-send-command-wait
 755       session
 756       (format (if elmo-imap4-use-uid "uid search %s"
 757                 "search %s") flag))
 758      'search)))
 759
 760 (defun elmo-imap4-session-flag-available-p (session flag)
 761   (case flag
 762     ((read unread) (elmo-string-member-ignore-case
 763                     "\\seen" (elmo-imap4-session-flags-internal session)))
 764     (important
 765      (elmo-string-member-ignore-case
 766       "\\flagged" (elmo-imap4-session-flags-internal session)))
 767     (digest
 768      (or (elmo-string-member-ignore-case
 769           "\\seen" (elmo-imap4-session-flags-internal session))
 770          (elmo-string-member-ignore-case
 771           "\\flagged" (elmo-imap4-session-flags-internal session))))
 772     (answered
 773      (elmo-string-member-ignore-case
 774       (concat "\\" (symbol-name flag))
 775       (elmo-imap4-session-flags-internal session)))
 776     (t
 777      (member "\\*" (elmo-imap4-session-flags-internal session)))))
 778
 779 (defun elmo-imap4-flag-to-imap-search-key (flag)
 780   (case flag
 781     (read "seen")
 782     (unread "unseen")
 783     (important "flagged")
 784     (answered "answered")
 785     (new "new")
 786     (t (concat
 787         "keyword "
 788         (or (car (cdr (assq flag elmo-imap4-flag-specs)))
 789             (symbol-name flag))))))
 790
 791 (defun elmo-imap4-flag-to-imap-criteria (flag)
 792   (case flag
 793     ((any digest)
 794      (let ((criteria "flagged")
 795            (global-flags (delq 'important (elmo-get-global-flags t t))))
 796        (dolist (flag (delete 'new
 797                              (delete 'cached
 798                                      (copy-sequence
 799                                       (case flag
 800                                         (any
 801                                          elmo-preserved-flags)
 802                                         (digest
 803                                          elmo-digest-flags))))))
 804          (setq criteria (concat "or "
 805                                 (elmo-imap4-flag-to-imap-search-key flag)
 806                                 " "
 807                                 criteria)))
 808        (while global-flags
 809          (setq criteria (concat "or keyword "
 810                                 (symbol-name (car global-flags))
 811                                 " "
 812                                 criteria))
 813          (setq global-flags (cdr global-flags)))
 814        criteria))
 815     (t
 816      (elmo-imap4-flag-to-imap-search-key flag))))
 817
 818 (defun elmo-imap4-folder-list-flagged (folder flag)
 819   "List flagged message numbers in the FOLDER.
 820 FLAG is one of the `unread', `read', `important', `answered', `any'."
 821   (let ((session (elmo-imap4-get-session folder))
 822         (criteria (elmo-imap4-flag-to-imap-criteria flag)))
 823     (if (elmo-imap4-session-flag-available-p session flag)
 824         (progn
 825           (elmo-imap4-session-select-mailbox
 826            session
 827            (elmo-imap4-folder-mailbox-internal folder))
 828           (elmo-imap4-response-value
 829            (elmo-imap4-send-command-wait
 830             session
 831             (format (if elmo-imap4-use-uid "uid search %s"
 832                       "search %s") criteria))
 833            'search))
 834       ;; List flagged messages in the msgdb.
 835       (elmo-msgdb-list-flagged (elmo-folder-msgdb folder) flag))))
 836
 837 (defvar elmo-imap4-rfc822-size "RFC822\.SIZE")
 838 (defvar elmo-imap4-rfc822-text "RFC822\.TEXT")
 839 (defvar elmo-imap4-rfc822-header "RFC822\.HEADER")
 840 (defvar elmo-imap4-header-fields "HEADER\.FIELDS")
 841
 842 (defun elmo-imap4-make-number-set-list (msg-list &optional chop-length)
 843   "Make RFC2060's message set specifier from MSG-LIST.
 844 Returns a list of (NUMBER . SET-STRING).
 845 SET-STRING is the message set specifier described in RFC2060.
 846 NUMBER is contained message number in SET-STRING.
 847 Every SET-STRING does not contain number of messages longer than CHOP-LENGTH.
 848 If CHOP-LENGTH is not specified, message set is not chopped."
 849   (let (count cont-list set-list)
 850     (setq msg-list (sort (copy-sequence msg-list) '<))
 851     (while msg-list
 852       (setq cont-list nil)
 853       (setq count 0)
 854       (unless chop-length
 855         (setq chop-length (length msg-list)))
 856       (while (and (not (null msg-list))
 857                   (< count chop-length))
 858         (setq cont-list
 859               (elmo-number-set-append
 860                cont-list (car msg-list)))
 861         (incf count)
 862         (setq msg-list (cdr msg-list)))
 863       (setq set-list
 864             (cons
 865              (cons
 866               count
 867               (mapconcat
 868                (lambda (x)
 869                  (cond ((consp x)
 870                         (format "%s:%s" (car x) (cdr x)))
 871                        ((integerp x)
 872                         (int-to-string x))))
 873                cont-list
 874                ","))
 875              set-list)))
 876     (nreverse set-list)))
 877
 878 ;;
 879 ;; app-data:
 880 ;; cons of flag-table and folder structure
 881 (defsubst elmo-imap4-fetch-callback-1-subr (entity flags app-data)
 882   "A msgdb entity callback function."
 883   (let ((use-flag (elmo-folder-use-flag-p (cdr app-data)))
 884         (flag-table (car app-data))
 885         (msg-id (elmo-message-entity-field entity 'message-id))
 886         saved-flags flag-list)
 887 ;;    (when (elmo-string-member-ignore-case "\\Flagged" flags)
 888 ;;      (elmo-msgdb-global-mark-set msg-id elmo-msgdb-important-mark))
 889     (setq saved-flags (elmo-flag-table-get flag-table msg-id)
 890           flag-list
 891           (if use-flag
 892               (append
 893                (and (memq 'new saved-flags)
 894                     (not (elmo-string-member-ignore-case "\\Seen" flags))
 895                     '(new))
 896                (and (elmo-string-member-ignore-case "\\Flagged" flags)
 897                     '(important))
 898                (and (not (elmo-string-member-ignore-case "\\Seen" flags))
 899                     '(unread))
 900                (and (elmo-string-member-ignore-case "\\Answered" flags)
 901                     '(answered))
 902                (and (elmo-file-cache-exists-p msg-id)
 903                     '(cached)))
 904             saved-flags))
 905     (when (and (or (memq 'important flag-list)
 906                    (memq 'answered flag-list))
 907                (memq 'unread flag-list))
 908       (setq elmo-imap4-seen-messages
 909             (cons (elmo-message-entity-number entity)
 910                   elmo-imap4-seen-messages)))
 911     (elmo-msgdb-append-entity elmo-imap4-current-msgdb
 912                               entity
 913                               flag-list)))
 914
 915 ;; Current buffer is process buffer.
 916 (defun elmo-imap4-fetch-callback-1 (element app-data)
 917   (let ((handler (elmo-msgdb-message-entity-handler elmo-imap4-current-msgdb)))
 918     (elmo-imap4-fetch-callback-1-subr
 919      (with-temp-buffer
 920        (insert (or (elmo-imap4-response-bodydetail-text element)
 921                    ""))
 922        ;; Replace all CRLF with LF.
 923        (elmo-delete-cr-buffer)
 924        (elmo-msgdb-create-message-entity-from-buffer
 925         handler
 926         (elmo-imap4-response-value element 'uid)
 927         :size (elmo-imap4-response-value element 'rfc822size)))
 928      (elmo-imap4-response-value element 'flags)
 929      app-data)
 930     (elmo-progress-notify 'elmo-folder-msgdb-create)))
 931
 932 (defun elmo-imap4-parse-capability (string)
 933   (if (string-match "^\\*\\(.*\\)$" string)
 934       (read
 935        (concat "(" (downcase (elmo-match-string 1 string)) ")"))))
 936
 937 (defun elmo-imap4-clear-login (session)
 938   (when (elmo-imap4-session-capable-p session 'logindisabled)
 939     (signal 'elmo-authenticate-error '(elmo-imap4-clear-login)))
 940   (let ((elmo-imap4-debug-inhibit-logging t))
 941     (or
 942      (elmo-imap4-read-ok
 943       session
 944       (elmo-imap4-send-command
 945        session
 946        (list "login "
 947              (elmo-imap4-userid (elmo-network-session-user-internal session))
 948              " "
 949              (elmo-imap4-password
 950               (elmo-get-passwd (elmo-network-session-password-key session))))))
 951      (signal 'elmo-authenticate-error '(elmo-imap4-clear-login)))))
 952
 953 (defun elmo-imap4-auth-login (session)
 954   (let ((tag (elmo-imap4-send-command session "authenticate login"))
 955         (elmo-imap4-debug-inhibit-logging t))
 956     (or (elmo-imap4-read-continue-req session)
 957         (signal 'elmo-authenticate-error '(elmo-imap4-auth-login)))
 958     (elmo-imap4-send-string session
 959                             (elmo-base64-encode-string
 960                              (elmo-network-session-user-internal session)))
 961     (or (elmo-imap4-read-continue-req session)
 962         (signal 'elmo-authenticate-error '(elmo-imap4-auth-login)))
 963     (elmo-imap4-send-string session
 964                             (elmo-base64-encode-string
 965                              (elmo-get-passwd
 966                               (elmo-network-session-password-key session))))
 967     (or (elmo-imap4-read-ok session tag)
 968         (signal 'elmo-authenticate-error '(elmo-imap4-auth-login)))
 969     (setq elmo-imap4-status 'auth)))
 970
 971 (luna-define-method
 972   elmo-network-initialize-session-buffer :after ((session
 973                                                   elmo-imap4-session) buffer)
 974   (with-current-buffer buffer
 975     (mapcar 'make-variable-buffer-local elmo-imap4-local-variables)
 976     (setq elmo-imap4-seqno 0)
 977     (setq elmo-imap4-status 'initial)))
 978
 979 (luna-define-method elmo-network-initialize-session ((session
 980                                                       elmo-imap4-session))
 981   (let ((process (elmo-network-session-process-internal session)))
 982     (with-current-buffer (process-buffer process)
 983       ;; Skip garbage output from process before greeting.
 984       (while (and (memq (process-status process) '(open run))
 985                   (goto-char (point-max))
 986                   (or (/= (forward-line -1) 0)
 987                       (not (elmo-imap4-parse-greeting))))
 988         (accept-process-output process 1))
 989       (erase-buffer)
 990       (set-process-filter process 'elmo-imap4-arrival-filter)
 991       (set-process-sentinel process 'elmo-imap4-sentinel)
 992 ;;;   (while (and (memq (process-status process) '(open run))
 993 ;;;               (eq elmo-imap4-status 'initial))
 994 ;;;     (message "Waiting for server response...")
 995 ;;;     (accept-process-output process 1))
 996 ;;;   (message "")
 997       (unless (memq elmo-imap4-status '(nonauth auth))
 998         (signal 'elmo-open-error
 999                 (list 'elmo-network-initialize-session)))
1000       (elmo-imap4-session-set-capability-internal
1001        session
1002        (elmo-imap4-response-value
1003         (elmo-imap4-send-command-wait session "capability")
1004         'capability))
1005       (when (eq (elmo-network-stream-type-symbol
1006                  (elmo-network-session-stream-type-internal session))
1007                 'starttls)
1008         (or (elmo-imap4-session-capable-p session 'starttls)
1009             (signal 'elmo-open-error
1010                     '(elmo-imap4-starttls-error)))
1011         (elmo-imap4-send-command-wait session "starttls")
1012         (starttls-negotiate process)
1013         (elmo-imap4-session-set-capability-internal
1014          session
1015          (elmo-imap4-response-value
1016           (elmo-imap4-send-command-wait session "capability")
1017           'capability))))))
1018
1019 (luna-define-method elmo-network-authenticate-session ((session
1020                                                         elmo-imap4-session))
1021   (with-current-buffer (process-buffer
1022                         (elmo-network-session-process-internal session))
1023     (let* ((auth (elmo-network-session-auth-internal session))
1024            (auth (if (listp auth) auth (list auth))))
1025       (unless (or (eq elmo-imap4-status 'auth)
1026                   (null auth))
1027         (cond
1028          ((eq 'clear (car auth))
1029           (elmo-imap4-clear-login session))
1030          ((eq 'login (car auth))
1031           (elmo-imap4-auth-login session))
1032          (t
1033           (let* ((elmo-imap4-debug-inhibit-logging t)
1034                  (sasl-mechanisms
1035                   (delq nil
1036                         (mapcar
1037                          '(lambda (cap)
1038                             (if (string-match "^auth=\\(.*\\)$"
1039                                               (symbol-name cap))
1040                                 (match-string 1 (upcase (symbol-name cap)))))
1041                          (elmo-imap4-session-capability-internal session))))
1042                  (mechanism
1043                   (sasl-find-mechanism
1044                    (delq nil
1045                          (mapcar '(lambda (cap) (upcase (symbol-name cap)))
1046                                  (if (listp auth)
1047                                      auth
1048                                    (list auth)))))) ;)
1049                  client name step response tag
1050                  sasl-read-passphrase)
1051             (unless mechanism
1052               (if (or elmo-imap4-force-login
1053                       (y-or-n-p
1054                        (format
1055                         "There's no %s capability in server. continue?"
1056                         (elmo-list-to-string
1057                          (elmo-network-session-auth-internal session)))))
1058                   (setq mechanism (sasl-find-mechanism
1059                                    sasl-mechanisms))
1060                 (signal 'elmo-authenticate-error
1061                         '(elmo-imap4-auth-no-mechanisms))))
1062             (setq client
1063                   (sasl-make-client
1064                    mechanism
1065                    (elmo-network-session-user-internal session)
1066                    "imap"
1067                    (elmo-network-session-server-internal session)))
1068 ;;;         (if elmo-imap4-auth-user-realm
1069 ;;;             (sasl-client-set-property client 'realm elmo-imap4-auth-user-realm))
1070             (setq name (sasl-mechanism-name mechanism)
1071                   step (sasl-next-step client nil))
1072             (elmo-network-session-set-auth-internal
1073              session
1074              (intern (downcase name)))
1075             (setq sasl-read-passphrase
1076                   (function
1077                    (lambda (prompt)
1078                      (elmo-get-passwd
1079                       (elmo-network-session-password-key session)))))
1080             (setq tag
1081                   (elmo-imap4-send-command
1082                    session
1083                    (concat "AUTHENTICATE " name
1084                            (and (sasl-step-data step)
1085                                 (concat
1086                                  " "
1087                                  (elmo-base64-encode-string
1088                                   (sasl-step-data step)
1089                                   'no-lin-break))))))
1090             (catch 'done
1091               (while t
1092                 (setq response
1093                       (elmo-imap4-read-untagged
1094                        (elmo-network-session-process-internal session)))
1095                 (if (elmo-imap4-response-ok-p response)
1096                     (if (sasl-next-step client step)
1097                         ;; Bogus server?
1098                         (signal 'elmo-authenticate-error
1099                                 (list (intern
1100                                        (concat "elmo-imap4-auth-"
1101                                                (downcase name)))))
1102                       ;; The authentication process is finished.
1103                       (throw 'done nil)))
1104                 (unless (elmo-imap4-response-continue-req-p response)
1105                   ;; response is NO or BAD.
1106                   (signal 'elmo-authenticate-error
1107                           (list (intern
1108                                  (concat "elmo-imap4-auth-"
1109                                          (downcase name))))))
1110                 (sasl-step-set-data
1111                  step
1112                  (elmo-base64-decode-string
1113                   (elmo-imap4-response-value response 'continue-req)))
1114                 (setq step (sasl-next-step client step))
1115                 (setq tag
1116                       (elmo-imap4-send-string
1117                        session
1118                        (if (sasl-step-data step)
1119                            (elmo-base64-encode-string (sasl-step-data step)
1120                                                       'no-line-break)
1121                          ""))))))))))))
1122
1123 (luna-define-method elmo-network-setup-session ((session
1124                                                  elmo-imap4-session))
1125   (with-current-buffer (elmo-network-session-buffer session)
1126     (when (elmo-imap4-session-capable-p session 'namespace)
1127       (setq elmo-imap4-server-namespace
1128             (elmo-imap4-response-value
1129              (elmo-imap4-send-command-wait session "namespace")
1130              'namespace)))))
1131
1132 (defun elmo-imap4-setup-send-buffer (&optional string)
1133   (let ((send-buf (get-buffer-create " *elmo-imap4-setup-send-buffer*"))
1134         (source-buf (unless string (current-buffer))))
1135     (save-excursion
1136       (save-match-data
1137         (set-buffer send-buf)
1138         (erase-buffer)
1139         (set-buffer-multibyte nil)
1140         (if string
1141             (insert string)
1142           (with-current-buffer source-buf
1143             (copy-to-buffer send-buf (point-min) (point-max))))
1144         (goto-char (point-min))
1145         (if (eq (re-search-forward "^$" nil t)
1146                 (point-max))
1147             (insert "\n"))
1148         (goto-char (point-min))
1149         (while (search-forward "\n" nil t)
1150           (replace-match "\r\n"))))
1151     send-buf))
1152
1153 (defun elmo-imap4-setup-send-buffer-from-file (file)
1154   (let ((tmp-buf (get-buffer-create
1155                   " *elmo-imap4-setup-send-buffer-from-file*")))
1156     (save-excursion
1157       (save-match-data
1158         (set-buffer tmp-buf)
1159         (erase-buffer)
1160         (as-binary-input-file
1161          (insert-file-contents file))
1162         (goto-char (point-min))
1163         (if (eq (re-search-forward "^$" nil t)
1164                 (point-max))
1165             (insert "\n"))
1166         (goto-char (point-min))
1167         (while (search-forward "\n" nil t)
1168           (replace-match "\r\n"))))
1169     tmp-buf))
1170
1171 (luna-define-method elmo-delete-message-safe ((folder elmo-imap4-folder)
1172                                               number msgid)
1173   (let ((session (elmo-imap4-get-session folder))
1174         candidates)
1175     (elmo-imap4-session-select-mailbox
1176      session
1177      (elmo-imap4-folder-mailbox-internal folder))
1178     (setq candidates
1179           (elmo-imap4-response-value
1180            (elmo-imap4-send-command-wait session
1181                                          (list
1182                                           (if elmo-imap4-use-uid
1183                                               "uid search header message-id "
1184                                             "search header message-id ")
1185                                           (elmo-imap4-field-body msgid)))
1186            'search))
1187     (if (memq number candidates)
1188         (elmo-folder-delete-messages folder (list number)))))
1189
1190 (defun elmo-imap4-server-diff-async-callback-1 (status data)
1191   (funcall elmo-imap4-server-diff-async-callback
1192            (list (elmo-imap4-response-value status 'recent)
1193                  (elmo-imap4-response-value status 'unseen)
1194                  (elmo-imap4-response-value status 'messages))
1195            data))
1196
1197 (defun elmo-imap4-server-diff-async (folder)
1198   (let ((session (elmo-imap4-get-session folder)))
1199     ;; We should `check' folder to obtain newest information here.
1200     ;; But since there's no asynchronous check mechanism in elmo yet,
1201     ;; checking is not done here.
1202     (with-current-buffer (elmo-network-session-buffer session)
1203       (setq elmo-imap4-status-callback
1204             'elmo-imap4-server-diff-async-callback-1)
1205       (setq elmo-imap4-status-callback-data
1206             elmo-imap4-server-diff-async-callback-data))
1207     (elmo-imap4-send-command session
1208                              (list
1209                               "status "
1210                               (elmo-imap4-mailbox
1211                                (elmo-imap4-folder-mailbox-internal folder))
1212                               " (recent unseen messages)"))))
1213
1214 (luna-define-method elmo-server-diff-async ((folder elmo-imap4-folder))
1215   (let ((session (elmo-imap4-get-session folder)))
1216     ;; commit.
1217     ;; (elmo-imap4-commit spec)
1218     (with-current-buffer (elmo-network-session-buffer session)
1219       (setq elmo-imap4-status-callback
1220             'elmo-imap4-server-diff-async-callback-1)
1221       (setq elmo-imap4-status-callback-data
1222             elmo-imap4-server-diff-async-callback-data))
1223     (elmo-imap4-send-command session
1224                              (list
1225                               "status "
1226                               (elmo-imap4-mailbox
1227                                (elmo-imap4-folder-mailbox-internal folder))
1228                               " (recent unseen messages)"))))
1229
1230 ;;; IMAP parser.
1231
1232 (defvar elmo-imap4-server-eol "\r\n"
1233   "The EOL string sent from the server.")
1234
1235 (defvar elmo-imap4-client-eol "\r\n"
1236   "The EOL string we send to the server.")
1237
1238 (defvar elmo-imap4-literal-progress-reporter nil)
1239
1240 (defun elmo-imap4-find-next-line ()
1241   "Return point at end of current line, taking into account literals.
1242 Return nil if no complete line has arrived."
1243   (when (re-search-forward (concat elmo-imap4-server-eol "\\|{\\([0-9]+\\)}"
1244                                    elmo-imap4-server-eol)
1245                            nil t)
1246     (if (match-string 1)
1247         (if (< (point-max) (+ (point) (string-to-number (match-string 1))))
1248             (progn
1249               (when elmo-imap4-literal-progress-reporter
1250                 (elmo-progress-notify
1251                  'elmo-retrieve-message
1252                  :set (- (point-max) (point))
1253                  :total (string-to-number (match-string 1))))
1254               nil)
1255           (goto-char (+ (point) (string-to-number (match-string 1))))
1256           (elmo-imap4-find-next-line))
1257       (point))))
1258
1259 (defun elmo-imap4-sentinel (process string)
1260   (delete-process process))
1261
1262 (defun elmo-imap4-arrival-filter (proc string)
1263   "IMAP process filter."
1264   (when (buffer-live-p (process-buffer proc))
1265   (with-current-buffer (process-buffer proc)
1266     (elmo-imap4-debug "-> %s" string)
1267     (goto-char (point-max))
1268     (insert string)
1269     (let (end)
1270       (goto-char (point-min))
1271       (while (setq end (elmo-imap4-find-next-line))
1272         (save-restriction
1273           (narrow-to-region (point-min) end)
1274           (delete-backward-char (length elmo-imap4-server-eol))
1275           (goto-char (point-min))
1276           (unwind-protect
1277               (case elmo-imap4-status
1278                 (initial
1279                  (setq elmo-imap4-current-response
1280                        (list
1281                         (list 'greeting (elmo-imap4-parse-greeting)))))
1282                 ((auth nonauth selected examine)
1283                  (setq elmo-imap4-current-response
1284                        (cons (elmo-imap4-parse-response)
1285                              elmo-imap4-current-response)))
1286                 (t
1287                  (message "Unknown state %s in arrival filter"
1288                           elmo-imap4-status)))
1289             (delete-region (point-min) (point-max)))))))))
1290
1291 ;; IMAP parser.
1292
1293 (defsubst elmo-imap4-forward ()
1294   (or (eobp) (forward-char 1)))
1295
1296 (defsubst elmo-imap4-parse-number ()
1297   (when (looking-at "[0-9]+")
1298     (prog1
1299         (string-to-number (match-string 0))
1300       (goto-char (match-end 0)))))
1301
1302 (defsubst elmo-imap4-parse-literal ()
1303   (when (looking-at "{\\([0-9]+\\)}\r\n")
1304     (let ((pos (match-end 0))
1305           (len (string-to-number (match-string 1))))
1306       (if (< (point-max) (+ pos len))
1307           nil
1308         (goto-char (+ pos len))
1309         (buffer-substring pos (+ pos len))))))
1310 ;;;     (list ' pos (+ pos len))))))
1311
1312 (defsubst elmo-imap4-parse-string ()
1313   (cond ((eq (char-after (point)) ?\")
1314          (forward-char 1)
1315          (let ((p (point)) (name ""))
1316            (skip-chars-forward "^\"\\\\")
1317            (setq name (buffer-substring p (point)))
1318            (while (eq (char-after (point)) ?\\)
1319              (setq p (1+ (point)))
1320              (forward-char 2)
1321              (skip-chars-forward "^\"\\\\")
1322              (setq name (concat name (buffer-substring p (point)))))
1323            (forward-char 1)
1324            name))
1325         ((eq (char-after (point)) ?{)
1326          (elmo-imap4-parse-literal))))
1327
1328 (defsubst elmo-imap4-parse-nil ()
1329   (if (looking-at "NIL")
1330       (goto-char (match-end 0))))
1331
1332 (defsubst elmo-imap4-parse-nstring ()
1333   (or (elmo-imap4-parse-string)
1334       (and (elmo-imap4-parse-nil)
1335            nil)))
1336
1337 (defsubst elmo-imap4-parse-astring ()
1338   (or (elmo-imap4-parse-string)
1339       (buffer-substring (point)
1340                         (if (re-search-forward "[(){ \r\n%*\"\\]" nil t)
1341                             (goto-char (1- (match-end 0)))
1342                           (end-of-line)
1343                           (point)))))
1344
1345 (defsubst elmo-imap4-parse-address ()
1346   (let (address)
1347     (when (eq (char-after (point)) ?\()
1348       (elmo-imap4-forward)
1349       (setq address (vector (prog1 (elmo-imap4-parse-nstring)
1350                               (elmo-imap4-forward))
1351                             (prog1 (elmo-imap4-parse-nstring)
1352                               (elmo-imap4-forward))
1353                             (prog1 (elmo-imap4-parse-nstring)
1354                               (elmo-imap4-forward))
1355                             (elmo-imap4-parse-nstring)))
1356       (when (eq (char-after (point)) ?\))
1357         (elmo-imap4-forward)
1358         address))))
1359
1360 (defsubst elmo-imap4-parse-address-list ()
1361   (if (eq (char-after (point)) ?\()
1362       (let (address addresses)
1363         (elmo-imap4-forward)
1364         (while (and (not (eq (char-after (point)) ?\)))
1365                     ;; next line for MS Exchange bug
1366                     (progn (and (eq (char-after (point)) ? ) (elmo-imap4-forward)) t)
1367                     (setq address (elmo-imap4-parse-address)))
1368           (setq addresses (cons address addresses)))
1369         (when (eq (char-after (point)) ?\))
1370           (elmo-imap4-forward)
1371           (nreverse addresses)))
1372     (assert (elmo-imap4-parse-nil))))
1373
1374 (defsubst elmo-imap4-parse-mailbox ()
1375   (let ((mailbox (elmo-imap4-parse-astring)))
1376     (if (string-equal "INBOX" (upcase mailbox))
1377         "INBOX"
1378       mailbox)))
1379
1380 (defun elmo-imap4-parse-greeting ()
1381   "Parse a IMAP greeting."
1382   (cond ((looking-at "\\* OK ")
1383          (setq elmo-imap4-status 'nonauth))
1384         ((looking-at "\\* PREAUTH ")
1385          (setq elmo-imap4-status 'auth))
1386         ((looking-at "\\* BYE ")
1387          (setq elmo-imap4-status 'closed))))
1388
1389 (defun elmo-imap4-parse-response ()
1390   "Parse a IMAP command response."
1391   (let (token)
1392     (case (setq token (read (current-buffer)))
1393       (+ (progn
1394            (skip-chars-forward " ")
1395            (list 'continue-req (buffer-substring (point) (point-max)))))
1396       (* (case (prog1 (setq token (read (current-buffer)))
1397                  (elmo-imap4-forward))
1398            (OK         (elmo-imap4-parse-resp-text-code))
1399            (NO         (elmo-imap4-parse-resp-text-code))
1400            (BAD        (elmo-imap4-parse-resp-text-code))
1401            (BYE        (elmo-imap4-parse-bye))
1402            (FLAGS      (list 'flags
1403                              (elmo-imap4-parse-flag-list)))
1404            (LIST       (list 'list (elmo-imap4-parse-data-list)))
1405            (LSUB       (list 'lsub (elmo-imap4-parse-data-list)))
1406            (SEARCH     (list
1407                         'search
1408                         (read (concat "("
1409                                       (buffer-substring (point) (point-max))
1410                                       ")"))))
1411            (STATUS     (elmo-imap4-parse-status))
1412            ;; Added
1413            (NAMESPACE  (elmo-imap4-parse-namespace))
1414            (CAPABILITY (list 'capability
1415                              (read
1416                               (concat "(" (downcase (buffer-substring
1417                                                      (point) (point-max)))
1418                                       ")"))))
1419            (ACL (elmo-imap4-parse-acl))
1420            (t       (case (prog1 (read (current-buffer))
1421                             (elmo-imap4-forward))
1422                       (EXISTS  (list 'exists token))
1423                       (RECENT  (list 'recent token))
1424                       (EXPUNGE (list 'expunge token))
1425                       (FETCH   (elmo-imap4-parse-fetch token))
1426                       (t       (list 'garbage (buffer-string)))))))
1427       (t (if (not (string-match elmo-imap4-seq-prefix (symbol-name token)))
1428              (list 'garbage (buffer-string))
1429            (case (prog1 (read (current-buffer))
1430                    (elmo-imap4-forward))
1431              (OK  (progn
1432                     (setq elmo-imap4-parsing nil)
1433                     (setq token (symbol-name token))
1434                     (elmo-unintern token)
1435                     (elmo-imap4-debug "*%s* OK arrived" token)
1436                     (setq elmo-imap4-reached-tag token)
1437                     (list 'ok (elmo-imap4-parse-resp-text-code))))
1438              (NO  (progn
1439                     (setq elmo-imap4-parsing nil)
1440                     (setq token (symbol-name token))
1441                     (elmo-unintern token)
1442                     (elmo-imap4-debug "*%s* NO arrived" token)
1443                     (setq elmo-imap4-reached-tag token)
1444                     (let (code text)
1445                       (when (eq (char-after (point)) ?\[)
1446                         (setq code (buffer-substring (point)
1447                                                      (search-forward "]")))
1448                         (elmo-imap4-forward))
1449                       (setq text (buffer-substring (point) (point-max)))
1450                       (list 'no (list code text)))))
1451              (BAD (progn
1452                     (setq elmo-imap4-parsing nil)
1453                     (elmo-imap4-debug "*%s* BAD arrived" token)
1454                     (setq token (symbol-name token))
1455                     (elmo-unintern token)
1456                     (setq elmo-imap4-reached-tag token)
1457                     (let (code text)
1458                       (when (eq (char-after (point)) ?\[)
1459                         (setq code (buffer-substring (point)
1460                                                      (search-forward "]")))
1461                         (elmo-imap4-forward))
1462                       (setq text (buffer-substring (point) (point-max)))
1463                       (list 'bad (list code text)))))
1464              (t   (list 'garbage (buffer-string)))))))))
1465
1466 (defun elmo-imap4-parse-bye ()
1467   (let (code text)
1468     (when (eq (char-after (point)) ?\[)
1469       (setq code (buffer-substring (point)
1470                                    (search-forward "]")))
1471       (elmo-imap4-forward))
1472     (setq text (buffer-substring (point) (point-max)))
1473     (list 'bye (list code text))))
1474
1475 (defun elmo-imap4-parse-text ()
1476   (goto-char (point-min))
1477   (when (search-forward "[" nil t)
1478     (search-forward "]")
1479     (elmo-imap4-forward))
1480   (list 'text (buffer-substring (point) (point-max))))
1481
1482 (defun elmo-imap4-parse-resp-text-code ()
1483   (when (eq (char-after (point)) ?\[)
1484     (elmo-imap4-forward)
1485     (cond ((search-forward "PERMANENTFLAGS " nil t)
1486            (list 'permanentflags (elmo-imap4-parse-flag-list)))
1487           ((search-forward "UIDNEXT " nil t)
1488            (list 'uidnext (read (current-buffer))))
1489           ((search-forward "UNSEEN " nil t)
1490            (list 'unseen (read (current-buffer))))
1491           ((looking-at "UIDVALIDITY \\([0-9]+\\)")
1492            (list 'uidvalidity (match-string 1)))
1493           ((search-forward "READ-ONLY" nil t)
1494            (list 'read-only t))
1495           ((search-forward "READ-WRITE" nil t)
1496            (list 'read-write t))
1497           ((search-forward "NEWNAME " nil t)
1498            (let (oldname newname)
1499              (setq oldname (elmo-imap4-parse-string))
1500              (elmo-imap4-forward)
1501              (setq newname (elmo-imap4-parse-string))
1502              (list 'newname newname oldname)))
1503           ((search-forward "TRYCREATE" nil t)
1504            (list 'trycreate t))
1505           ((looking-at "APPENDUID \\([0-9]+\\) \\([0-9]+\\)")
1506            (list 'appenduid
1507                  (list (match-string 1)
1508                        (string-to-number (match-string 2)))))
1509           ((looking-at "COPYUID \\([0-9]+\\) \\([0-9,:]+\\) \\([0-9,:]+\\)")
1510            (list 'copyuid (list (match-string 1)
1511                                 (match-string 2)
1512                                 (match-string 3))))
1513           ((search-forward "ALERT] " nil t)
1514            (message "IMAP server information: %s"
1515                     (buffer-substring (point) (point-max))))
1516           (t (list 'unknown)))))
1517
1518 (defun elmo-imap4-parse-data-list ()
1519   (let (flags delimiter mailbox)
1520     (setq flags (elmo-imap4-parse-flag-list))
1521     (when (looking-at " NIL\\| \"\\\\?\\(.\\)\"")
1522       (setq delimiter (match-string 1))
1523       (goto-char (1+ (match-end 0)))
1524       (when (setq mailbox (elmo-imap4-parse-mailbox))
1525         (list mailbox flags delimiter)))))
1526
1527 (defsubst elmo-imap4-parse-header-list ()
1528   (when (eq (char-after (point)) ?\()
1529     (let (strlist)
1530       (while (not (eq (char-after (point)) ?\)))
1531         (elmo-imap4-forward)
1532         (push (elmo-imap4-parse-astring) strlist))
1533       (elmo-imap4-forward)
1534       (nreverse strlist))))
1535
1536 (defsubst elmo-imap4-parse-fetch-body-section ()
1537   (let ((section
1538          (buffer-substring (point)
1539                            (1-
1540                             (progn (re-search-forward "[] ]" nil t)
1541                                    (point))))))
1542     (if (eq (char-before) ? )
1543         (prog1
1544             (mapconcat 'identity
1545                        (cons section (elmo-imap4-parse-header-list)) " ")
1546           (search-forward "]" nil t))
1547       section)))
1548
1549 (defun elmo-imap4-parse-fetch (response)
1550   (when (eq (char-after (point)) ?\()
1551     (let (element list)
1552       (while (not (eq (char-after (point)) ?\)))
1553         (elmo-imap4-forward)
1554         (let ((token (read (current-buffer))))
1555           (elmo-imap4-forward)
1556           (setq element
1557                 (cond ((eq token 'UID)
1558                        (list 'uid (condition-case nil
1559                                       (read (current-buffer))
1560                                     (error nil))))
1561                       ((eq token 'FLAGS)
1562                        (list 'flags (elmo-imap4-parse-flag-list)))
1563                       ((eq token 'ENVELOPE)
1564                        (list 'envelope (elmo-imap4-parse-envelope)))
1565                       ((eq token 'INTERNALDATE)
1566                        (list 'internaldate (elmo-imap4-parse-string)))
1567                       ((eq token 'RFC822)
1568                        (list 'rfc822 (elmo-imap4-parse-nstring)))
1569                       ((eq token (intern elmo-imap4-rfc822-header))
1570                        (list 'rfc822header (elmo-imap4-parse-nstring)))
1571                       ((eq token (intern elmo-imap4-rfc822-text))
1572                        (list 'rfc822text (elmo-imap4-parse-nstring)))
1573                       ((eq token (intern elmo-imap4-rfc822-size))
1574                        (list 'rfc822size (read (current-buffer))))
1575                       ((eq token 'BODY)
1576                        (if (eq (char-before) ?\[)
1577                            (list
1578                             'bodydetail
1579                             (upcase (elmo-imap4-parse-fetch-body-section))
1580                             (and
1581                              (eq (char-after (point)) ?<)
1582                              (buffer-substring (1+ (point))
1583                                                (progn
1584                                                  (search-forward ">" nil t)
1585                                                  (point))))
1586                             (progn (elmo-imap4-forward)
1587                                    (elmo-imap4-parse-nstring)))
1588                          (list 'body (elmo-imap4-parse-body))))
1589                       ((eq token 'BODYSTRUCTURE)
1590                        (list 'bodystructure (elmo-imap4-parse-body)))))
1591           (setq list (cons element list))))
1592       (and elmo-imap4-fetch-callback
1593            (funcall elmo-imap4-fetch-callback
1594                     list elmo-imap4-fetch-callback-data))
1595       (list 'fetch list))))
1596
1597 (defun elmo-imap4-parse-status ()
1598   (let ((mailbox (elmo-imap4-parse-mailbox))
1599         status)
1600     (when (and mailbox (search-forward "(" nil t))
1601       (while (not (eq (char-after (point)) ?\)))
1602         (setq status
1603               (cons
1604                (let ((token (read (current-buffer))))
1605                  (cond ((eq token 'MESSAGES)
1606                         (list 'messages (read (current-buffer))))
1607                        ((eq token 'RECENT)
1608                         (list 'recent (read (current-buffer))))
1609                        ((eq token 'UIDNEXT)
1610                         (list 'uidnext (read (current-buffer))))
1611                        ((eq token 'UIDVALIDITY)
1612                         (and (looking-at " \\([0-9]+\\)")
1613                              (prog1 (list 'uidvalidity (match-string 1))
1614                                (goto-char (match-end 1)))))
1615                        ((eq token 'UNSEEN)
1616                         (list 'unseen (read (current-buffer))))
1617                        (t
1618                         (message
1619                          "Unknown status data %s in mailbox %s ignored"
1620                          token mailbox))))
1621                status))
1622         (skip-chars-forward " ")))
1623     (and elmo-imap4-status-callback
1624          (funcall elmo-imap4-status-callback
1625                   status
1626                   elmo-imap4-status-callback-data))
1627     (list 'status status)))
1628
1629
1630 (defmacro elmo-imap4-value (value)
1631   `(if (eq ,value 'NIL)
1632        nil
1633      ,value))
1634
1635 (defmacro elmo-imap4-nth (pos list)
1636   `(let ((value (nth ,pos ,list)))
1637      (elmo-imap4-value value)))
1638
1639 (defun elmo-imap4-parse-namespace ()
1640   (list 'namespace
1641         (nconc
1642          (copy-sequence elmo-imap4-extra-namespace-alist)
1643          (elmo-imap4-parse-namespace-subr
1644           (read (concat "(" (buffer-substring
1645                              (point) (point-max))
1646                         ")"))))))
1647
1648 (defun elmo-imap4-parse-namespace-subr (ns)
1649   (let (prefix delim namespace-alist default-delim)
1650     ;; 0: personal, 1: other, 2: shared
1651     (dotimes (i 3)
1652       (setq namespace-alist
1653             (nconc namespace-alist
1654                    (delq nil
1655                          (mapcar
1656                           (lambda (namespace)
1657                             (setq prefix (elmo-imap4-nth 0 namespace)
1658                                   delim (elmo-imap4-nth 1 namespace))
1659                             (if (and prefix delim
1660                                      (string-match
1661                                       (concat (regexp-quote delim) "\\'")
1662                                       prefix))
1663                                 (setq prefix (substring prefix 0
1664                                                         (match-beginning 0))))
1665                             (if (eq (length prefix) 0)
1666                                 (progn (setq default-delim delim) nil)
1667                               (cons
1668                                (concat "^\\("
1669                                        (if (string= (downcase prefix) "inbox")
1670                                            "[Ii][Nn][Bb][Oo][Xx]"
1671                                          (regexp-quote prefix))
1672                                        "\\).*$")
1673                                delim)))
1674                           (elmo-imap4-nth i ns))))))
1675     (if default-delim
1676         (setq namespace-alist
1677               (nconc namespace-alist
1678                      (list (cons "^.*$" default-delim)))))
1679     namespace-alist))
1680
1681 (defun elmo-imap4-parse-acl ()
1682   (let ((mailbox (elmo-imap4-parse-mailbox))
1683         identifier rights acl)
1684     (while (eq (char-after (point)) ?\ )
1685       (elmo-imap4-forward)
1686       (setq identifier (elmo-imap4-parse-astring))
1687       (elmo-imap4-forward)
1688       (setq rights (elmo-imap4-parse-astring))
1689       (setq acl (append acl (list (cons identifier rights)))))
1690     (list 'acl acl mailbox)))
1691
1692 (defun elmo-imap4-parse-flag-list ()
1693   (let ((str (buffer-substring (+ (point) 1)
1694                                (progn (search-forward ")" nil t)
1695                                       (- (point) 1)))))
1696     (unless (eq (length str) 0)
1697       (split-string str))))
1698
1699 (defun elmo-imap4-parse-envelope ()
1700   (when (eq (char-after (point)) ?\()
1701     (elmo-imap4-forward)
1702     (vector (prog1 (elmo-imap4-parse-nstring);; date
1703               (elmo-imap4-forward))
1704             (prog1 (elmo-imap4-parse-nstring);; subject
1705               (elmo-imap4-forward))
1706             (prog1 (elmo-imap4-parse-address-list);; from
1707               (elmo-imap4-forward))
1708             (prog1 (elmo-imap4-parse-address-list);; sender
1709               (elmo-imap4-forward))
1710             (prog1 (elmo-imap4-parse-address-list);; reply-to
1711               (elmo-imap4-forward))
1712             (prog1 (elmo-imap4-parse-address-list);; to
1713               (elmo-imap4-forward))
1714             (prog1 (elmo-imap4-parse-address-list);; cc
1715               (elmo-imap4-forward))
1716             (prog1 (elmo-imap4-parse-address-list);; bcc
1717               (elmo-imap4-forward))
1718             (prog1 (elmo-imap4-parse-nstring);; in-reply-to
1719               (elmo-imap4-forward))
1720             (prog1 (elmo-imap4-parse-nstring);; message-id
1721               (elmo-imap4-forward)))))
1722
1723 (defsubst elmo-imap4-parse-string-list ()
1724   (cond ((eq (char-after (point)) ?\();; body-fld-param
1725          (let (strlist str)
1726            (elmo-imap4-forward)
1727            (while (setq str (elmo-imap4-parse-string))
1728              (push str strlist)
1729              (elmo-imap4-forward))
1730            (nreverse strlist)))
1731         ((elmo-imap4-parse-nil)
1732          nil)))
1733
1734 (defun elmo-imap4-parse-body-extension ()
1735   (if (eq (char-after (point)) ?\()
1736       (let (b-e)
1737         (elmo-imap4-forward)
1738         (push (elmo-imap4-parse-body-extension) b-e)
1739         (while (eq (char-after (point)) ?\ )
1740           (elmo-imap4-forward)
1741           (push (elmo-imap4-parse-body-extension) b-e))
1742         (assert (eq (char-after (point)) ?\)))
1743         (elmo-imap4-forward)
1744         (nreverse b-e))
1745     (or (elmo-imap4-parse-number)
1746         (elmo-imap4-parse-nstring))))
1747
1748 (defsubst elmo-imap4-parse-body-ext ()
1749   (let (ext)
1750     (when (eq (char-after (point)) ?\ );; body-fld-dsp
1751       (elmo-imap4-forward)
1752       (let (dsp)
1753         (if (eq (char-after (point)) ?\()
1754             (progn
1755               (elmo-imap4-forward)
1756               (push (elmo-imap4-parse-string) dsp)
1757               (elmo-imap4-forward)
1758               (push (elmo-imap4-parse-string-list) dsp)
1759               (elmo-imap4-forward))
1760           (assert (elmo-imap4-parse-nil)))
1761         (push (nreverse dsp) ext))
1762       (when (eq (char-after (point)) ?\ );; body-fld-lang
1763         (elmo-imap4-forward)
1764         (if (eq (char-after (point)) ?\()
1765             (push (elmo-imap4-parse-string-list) ext)
1766           (push (elmo-imap4-parse-nstring) ext))
1767         (while (eq (char-after (point)) ?\ );; body-extension
1768           (elmo-imap4-forward)
1769           (setq ext (append (elmo-imap4-parse-body-extension) ext)))))
1770     ext))
1771
1772 (defun elmo-imap4-parse-body ()
1773   (let (body)
1774     (when (eq (char-after (point)) ?\()
1775       (elmo-imap4-forward)
1776       (if (eq (char-after (point)) ?\()
1777           (let (subbody)
1778             (while (and (eq (char-after (point)) ?\()
1779                         (setq subbody (elmo-imap4-parse-body)))
1780               (push subbody body))
1781             (elmo-imap4-forward)
1782             (push (elmo-imap4-parse-string) body);; media-subtype
1783             (when (eq (char-after (point)) ?\ );; body-ext-mpart:
1784               (elmo-imap4-forward)
1785               (if (eq (char-after (point)) ?\();; body-fld-param
1786                   (push (elmo-imap4-parse-string-list) body)
1787                 (push (and (elmo-imap4-parse-nil) nil) body))
1788               (setq body
1789                     (append (elmo-imap4-parse-body-ext) body)));; body-ext-...
1790             (assert (eq (char-after (point)) ?\)))
1791             (elmo-imap4-forward)
1792             (nreverse body))
1793
1794         (push (elmo-imap4-parse-string) body);; media-type
1795         (elmo-imap4-forward)
1796         (push (elmo-imap4-parse-string) body);; media-subtype
1797         (elmo-imap4-forward)
1798         ;; next line for Sun SIMS bug
1799         (and (eq (char-after (point)) ? ) (elmo-imap4-forward))
1800         (if (eq (char-after (point)) ?\();; body-fld-param
1801             (push (elmo-imap4-parse-string-list) body)
1802           (push (and (elmo-imap4-parse-nil) nil) body))
1803         (elmo-imap4-forward)
1804         (push (elmo-imap4-parse-nstring) body);; body-fld-id
1805         (elmo-imap4-forward)
1806         (push (elmo-imap4-parse-nstring) body);; body-fld-desc
1807         (elmo-imap4-forward)
1808         (push (elmo-imap4-parse-string) body);; body-fld-enc
1809         (elmo-imap4-forward)
1810         (push (elmo-imap4-parse-number) body);; body-fld-octets
1811
1812         ;; ok, we're done parsing the required parts, what comes now is one
1813         ;; of three things:
1814         ;;
1815         ;; envelope       (then we're parsing body-type-msg)
1816         ;; body-fld-lines (then we're parsing body-type-text)
1817         ;; body-ext-1part (then we're parsing body-type-basic)
1818         ;;
1819         ;; the problem is that the two first are in turn optionally followed
1820         ;; by the third.  So we parse the first two here (if there are any)...
1821
1822         (when (eq (char-after (point)) ?\ )
1823           (elmo-imap4-forward)
1824           (let (lines)
1825             (cond ((eq (char-after (point)) ?\();; body-type-msg:
1826                    (push (elmo-imap4-parse-envelope) body);; envelope
1827                    (elmo-imap4-forward)
1828                    (push (elmo-imap4-parse-body) body);; body
1829                    (elmo-imap4-forward)
1830                    (push (elmo-imap4-parse-number) body));; body-fld-lines
1831                   ((setq lines (elmo-imap4-parse-number));; body-type-text:
1832                    (push lines body));; body-fld-lines
1833                   (t
1834                    (backward-char)))));; no match...
1835
1836         ;; ...and then parse the third one here...
1837
1838         (when (eq (char-after (point)) ?\ );; body-ext-1part:
1839           (elmo-imap4-forward)
1840           (push (elmo-imap4-parse-nstring) body);; body-fld-md5
1841           (setq body
1842                 (append (elmo-imap4-parse-body-ext) body)));; body-ext-1part..
1843
1844         (assert (eq (char-after (point)) ?\)))
1845         (elmo-imap4-forward)
1846         (nreverse body)))))
1847
1848 (luna-define-method elmo-folder-initialize ((folder elmo-imap4-folder) name)
1849   (let ((default-user   elmo-imap4-default-user)
1850         (default-server elmo-imap4-default-server)
1851         (default-port   elmo-imap4-default-port)
1852         (elmo-network-stream-type-alist
1853          (if elmo-imap4-stream-type-alist
1854              (append elmo-imap4-stream-type-alist
1855                      elmo-network-stream-type-alist)
1856            elmo-network-stream-type-alist))
1857         tokens)
1858     (when (string-match "\\(.*\\)@\\(.*\\)" default-server)
1859       ;; case: imap4-default-server is specified like
1860       ;; "hoge%imap.server@gateway".
1861       (setq default-user (elmo-match-string 1 default-server))
1862       (setq default-server (elmo-match-string 2 default-server)))
1863     (setq tokens (car (elmo-parse-separated-tokens
1864                        name
1865                        elmo-imap4-folder-name-syntax)))
1866     ;; mailbox
1867     (elmo-imap4-folder-set-mailbox-internal folder
1868                                             (elmo-imap4-encode-folder-string
1869                                              (cdr (assq 'mailbox tokens))))
1870     ;; user
1871     (elmo-net-folder-set-user-internal folder
1872                                        (or (cdr (assq 'user tokens))
1873                                            default-user))
1874     ;; auth
1875     (elmo-net-folder-set-auth-internal
1876      folder
1877      (let ((auth (cdr (assq 'auth tokens))))
1878        (or (and auth (intern auth))
1879            elmo-imap4-default-authenticate-type
1880            'clear)))
1881     ;; network
1882     (elmo-net-folder-set-parameters
1883      folder
1884      tokens
1885      (list :server      default-server
1886            :port        default-port
1887            :stream-type
1888            (elmo-get-network-stream-type elmo-imap4-default-stream-type)))
1889     folder))
1890
1891 ;;; ELMO IMAP4 folder
1892 (luna-define-method elmo-folder-expand-msgdb-path ((folder
1893                                                     elmo-imap4-folder))
1894   (convert-standard-filename
1895    (let ((mailbox (elmo-imap4-folder-mailbox-internal folder)))
1896      (if (string= "inbox" (downcase mailbox))
1897          (setq mailbox "inbox"))
1898      (if (eq (string-to-char mailbox) ?/)
1899          (setq mailbox (substring mailbox 1 (length mailbox))))
1900      ;; don't use expand-file-name (e.g. %~/something)
1901      (concat
1902       (expand-file-name
1903        (or (elmo-net-folder-user-internal folder) "nobody")
1904        (expand-file-name (or (elmo-net-folder-server-internal folder)
1905                              "nowhere")
1906                          (expand-file-name
1907                           "imap"
1908                           elmo-msgdb-directory)))
1909       "/" mailbox))))
1910
1911 (luna-define-method elmo-folder-status-plugged ((folder
1912                                                  elmo-imap4-folder))
1913   (elmo-imap4-folder-status-plugged folder))
1914
1915 (defun elmo-imap4-folder-status-plugged (folder)
1916   (let ((session (elmo-imap4-get-session folder))
1917         (killed (elmo-msgdb-killed-list-load
1918                  (elmo-folder-msgdb-path folder)))
1919         status)
1920     (with-current-buffer (elmo-network-session-buffer session)
1921       (setq elmo-imap4-status-callback nil)
1922       (setq elmo-imap4-status-callback-data nil))
1923     (setq status (elmo-imap4-response-value
1924                   (elmo-imap4-send-command-wait
1925                    session
1926                    (list "status "
1927                          (elmo-imap4-mailbox
1928                           (elmo-imap4-folder-mailbox-internal folder))
1929                          " (uidnext messages)"))
1930                   'status))
1931     (cons
1932      (- (elmo-imap4-response-value status 'uidnext) 1)
1933      (if killed
1934          (-
1935           (elmo-imap4-response-value status 'messages)
1936           (elmo-msgdb-killed-list-length killed))
1937        (elmo-imap4-response-value status 'messages)))))
1938
1939 (luna-define-method elmo-folder-list-messages-plugged ((folder
1940                                                         elmo-imap4-folder)
1941                                                        &optional
1942                                                        enable-killed)
1943   (elmo-imap4-list folder
1944                    (concat
1945                     (let ((killed
1946                            (elmo-folder-killed-list-internal
1947                             folder)))
1948                       (if (and killed
1949                                (eq (length killed) 1)
1950                                (consp (car killed))
1951                                (eq (car (car killed)) 1))
1952                           (format "uid %d:*" (cdr (car killed)))
1953                         "all"))
1954                     " undeleted")))
1955
1956 (luna-define-method elmo-folder-list-flagged-plugged
1957   ((folder elmo-imap4-folder) flag)
1958   (elmo-imap4-folder-list-flagged folder flag))
1959
1960 (luna-define-method elmo-folder-use-flag-p ((folder elmo-imap4-folder))
1961   (not (string-match elmo-imap4-disuse-server-flag-mailbox-regexp
1962                      (elmo-imap4-folder-mailbox-internal folder))))
1963
1964 (luna-define-method elmo-folder-list-subfolders ((folder elmo-imap4-folder)
1965                                                  &optional one-level)
1966   (let* ((root (elmo-imap4-folder-mailbox-internal folder))
1967          (session (elmo-imap4-get-session folder))
1968          (prefix (elmo-folder-prefix-internal folder))
1969          (namespace-assoc
1970                   (elmo-string-matched-assoc
1971                    root
1972                    (with-current-buffer (elmo-network-session-buffer session)
1973                      elmo-imap4-server-namespace)))
1974          (delim (or (cdr namespace-assoc)
1975                  elmo-imap4-default-hierarchy-delimiter))
1976          ;; Append delimiter when root with namespace.
1977          (root-nodelim root)
1978          (root (if (and namespace-assoc
1979                         (match-end 1)
1980                         (string= (substring root (match-end 1))
1981                                  ""))
1982                    (concat root delim)
1983                  root))
1984          result append-serv type)
1985     (setq result (elmo-imap4-response-get-selectable-mailbox-list
1986                   (elmo-imap4-send-command-wait
1987                    session
1988                    (list "list " (elmo-imap4-mailbox root) " *"))))
1989     ;; The response of Courier-imap doesn't contain a specified folder itself.
1990     (unless (member root result)
1991       (setq result
1992             (append result
1993                     (elmo-imap4-response-get-selectable-mailbox-list
1994                      (elmo-imap4-send-command-wait
1995                       session
1996                       (list "list \"\" " (elmo-imap4-mailbox
1997                                           root-nodelim)))))))
1998     (when (or (not (string= (elmo-net-folder-user-internal folder)
1999                             elmo-imap4-default-user))
2000               (not (eq (elmo-net-folder-auth-internal folder)
2001                        (or elmo-imap4-default-authenticate-type 'clear))))
2002       (setq append-serv (concat ":"
2003                                 (elmo-quote-syntactical-element
2004                                  (elmo-net-folder-user-internal folder)
2005                                  'user elmo-imap4-folder-name-syntax))))
2006     (unless (eq (elmo-net-folder-auth-internal folder)
2007                 (or elmo-imap4-default-authenticate-type 'clear))
2008       (setq append-serv
2009             (concat append-serv "/"
2010                     (symbol-name (elmo-net-folder-auth-internal folder)))))
2011     (unless (string= (elmo-net-folder-server-internal folder)
2012                      elmo-imap4-default-server)
2013       (setq append-serv (concat append-serv "@"
2014                                 (elmo-net-folder-server-internal folder))))
2015     (unless (eq (elmo-net-folder-port-internal folder) elmo-imap4-default-port)
2016       (setq append-serv (concat append-serv ":"
2017                                 (int-to-string
2018                                  (elmo-net-folder-port-internal folder)))))
2019     (setq type (elmo-net-folder-stream-type-internal folder))
2020     (unless (eq (elmo-network-stream-type-symbol type)
2021                 elmo-imap4-default-stream-type)
2022       (if type
2023           (setq append-serv (concat append-serv
2024                                     (elmo-network-stream-type-spec-string
2025                                      type)))))
2026     (if one-level
2027         (let ((re-delim (regexp-quote delim))
2028               (case-fold-search nil)
2029               folder ret has-child-p)
2030           ;; Append delimiter
2031           (when (and root
2032                      (not (string= root ""))
2033                      (not (string-match
2034                            (concat "\\(.*\\)" re-delim "\\'")
2035                            root)))
2036             (setq root (concat root delim)))
2037           (while (setq folder (car result))
2038             (setq has-child-p
2039                   (when (string-match
2040                          (concat "^\\(" (regexp-quote root) "[^" re-delim "]" "+\\)"
2041                                  re-delim)
2042                          folder)
2043                     (setq folder (match-string 1 folder))))
2044             (setq result (delq
2045                           nil
2046                           (mapcar (lambda (fld)
2047                                     (if (string-match
2048                                          (concat "^" (regexp-quote folder)
2049                                                  "\\(" re-delim "\\|\\'\\)")
2050                                          fld)
2051                                         (progn (setq has-child-p t) nil)
2052                                       fld))
2053                                   (cdr result)))
2054                   folder (concat prefix
2055                                  (elmo-quote-syntactical-element
2056                                   (elmo-imap4-decode-folder-string folder)
2057                                   'mailbox elmo-imap4-folder-name-syntax)
2058                                  (and append-serv
2059                                       (eval append-serv)))
2060                   ret (append ret (if has-child-p
2061                                       (list (list folder))
2062                                     (list folder)))))
2063           ret)
2064       (mapcar (lambda (fld)
2065                 (concat prefix
2066                         (elmo-quote-syntactical-element
2067                          (elmo-imap4-decode-folder-string fld)
2068                          'mailbox elmo-imap4-folder-name-syntax)
2069                         (and append-serv
2070                              (eval append-serv))))
2071               result))))
2072
2073 (luna-define-method elmo-folder-exists-p-plugged ((folder elmo-imap4-folder))
2074   (let ((session (elmo-imap4-get-session folder)))
2075     (if (string=
2076          (elmo-imap4-session-current-mailbox-internal session)
2077          (elmo-imap4-folder-mailbox-internal folder))
2078         t
2079       (elmo-imap4-session-select-mailbox
2080        session
2081        (elmo-imap4-folder-mailbox-internal folder)
2082        'force 'notify-bye))))
2083
2084 (luna-define-method elmo-folder-creatable-p ((folder elmo-imap4-folder))
2085   t)
2086
2087 (luna-define-method elmo-folder-writable-p ((folder elmo-imap4-folder))
2088   t)
2089
2090 (luna-define-method elmo-folder-delete ((folder elmo-imap4-folder))
2091   (let* ((exists (elmo-folder-exists-p folder))
2092          (msgs (and exists
2093                     (elmo-folder-list-messages folder))))
2094     (when (yes-or-no-p (format "%sDelete msgdb and substance of \"%s\"? "
2095                                (if (> (length msgs) 0)
2096                                    (format "%d msg(s) exists. " (length msgs))
2097                                  "")
2098                                (elmo-folder-name-internal folder)))
2099       (let ((session (elmo-imap4-get-session folder)))
2100         (when (elmo-imap4-folder-mailbox-internal folder)
2101           (when msgs (elmo-folder-delete-messages-internal folder msgs))
2102           ;; close selected mailbox except one with \Noselect attribute
2103           (when exists
2104             (elmo-imap4-send-command-wait session "close"))
2105           (elmo-imap4-send-command-wait
2106            session
2107            (list "delete "
2108                  (elmo-imap4-mailbox
2109                   (elmo-imap4-folder-mailbox-internal folder)))))
2110         (elmo-imap4-session-set-current-mailbox-internal session nil))
2111       (elmo-msgdb-delete-path folder)
2112       t)))
2113
2114 (luna-define-method elmo-folder-rename-internal ((folder elmo-imap4-folder)
2115                                                  new-folder)
2116   (let ((session (elmo-imap4-get-session folder)))
2117     ;; make sure the folder is selected.
2118     (elmo-imap4-session-select-mailbox session
2119                                        (elmo-imap4-folder-mailbox-internal
2120                                         folder))
2121     (elmo-imap4-send-command-wait session "close")
2122     (elmo-imap4-send-command-wait
2123      session
2124      (list "rename "
2125            (elmo-imap4-mailbox
2126             (elmo-imap4-folder-mailbox-internal folder))
2127            " "
2128            (elmo-imap4-mailbox
2129             (elmo-imap4-folder-mailbox-internal new-folder))))
2130     (elmo-imap4-session-set-current-mailbox-internal
2131      session (elmo-imap4-folder-mailbox-internal new-folder))))
2132
2133 (defun elmo-imap4-copy-messages (src-folder dst-folder numbers)
2134   (let ((session (elmo-imap4-get-session src-folder))
2135         (set-list (elmo-imap4-make-number-set-list
2136                    numbers
2137                    elmo-imap4-number-set-chop-length))
2138         succeeds)
2139     (elmo-imap4-session-select-mailbox session
2140                                        (elmo-imap4-folder-mailbox-internal
2141                                         src-folder))
2142     (while set-list
2143       (if (elmo-imap4-send-command-wait session
2144                                         (list
2145                                          (format
2146                                           (if elmo-imap4-use-uid
2147                                               "uid copy %s "
2148                                             "copy %s ")
2149                                           (cdr (car set-list)))
2150                                          (elmo-imap4-mailbox
2151                                           (elmo-imap4-folder-mailbox-internal
2152                                            dst-folder))))
2153           (setq succeeds (append succeeds numbers)))
2154       (setq set-list (cdr set-list)))
2155     succeeds))
2156
2157 (defun elmo-imap4-set-flag (folder numbers flag &optional remove)
2158   "Set flag on messages.
2159 FOLDER is the ELMO folder structure.
2160 NUMBERS is the message numbers to be flagged.
2161 FLAG is the flag name.
2162 If optional argument REMOVE is non-nil, remove FLAG."
2163   (let ((session (elmo-imap4-get-session folder))
2164         response set-list)
2165     (elmo-imap4-session-select-mailbox session
2166                                        (elmo-imap4-folder-mailbox-internal
2167                                         folder))
2168     (when (or (elmo-string-member-ignore-case
2169                flag
2170                (elmo-imap4-session-flags-internal session))
2171               (member "\\*" (elmo-imap4-session-flags-internal session))
2172               (string= flag "\\Deleted")) ; XXX Humm..
2173       (setq set-list (elmo-imap4-make-number-set-list
2174                       numbers
2175                       elmo-imap4-number-set-chop-length))
2176       (while set-list
2177         (with-current-buffer (elmo-network-session-buffer session)
2178           (setq elmo-imap4-fetch-callback nil)
2179           (setq elmo-imap4-fetch-callback-data nil))
2180         (unless (elmo-imap4-response-ok-p
2181                  (elmo-imap4-send-command-wait
2182                   session
2183                   (format
2184                    (if elmo-imap4-use-uid
2185                        "uid store %s %sflags.silent (%s)"
2186                      "store %s %sflags.silent (%s)")
2187                    (cdr (car set-list))
2188                    (if remove "-" "+")
2189                    flag)))
2190           (setq response 'fail))
2191         (setq set-list (cdr set-list)))
2192       (not (eq response 'fail)))))
2193
2194 (luna-define-method elmo-folder-delete-messages-plugged
2195   ((folder elmo-imap4-folder) numbers)
2196   (let ((session (elmo-imap4-get-session folder))
2197         (expunge
2198          (or (null (elmo-imap4-list folder "deleted"))
2199              (y-or-n-p
2200               "There's hidden deleted messages, expunge anyway?"))))
2201     (elmo-imap4-session-select-mailbox
2202      session
2203      (elmo-imap4-folder-mailbox-internal folder))
2204     (unless (elmo-imap4-set-flag folder numbers "\\Deleted")
2205       (error "Failed to set deleted flag"))
2206     (when expunge
2207       (elmo-imap4-send-command session "expunge"))
2208     t))
2209
2210 (defmacro elmo-imap4-detect-search-charset (string)
2211   `(with-temp-buffer
2212      (insert ,string)
2213      (detect-mime-charset-region (point-min) (point-max))))
2214
2215 (defun elmo-imap4-search-internal-primitive (folder session filter from-msgs)
2216   (let ((search-key (elmo-filter-key filter))
2217         (imap-search-keys '("bcc" "body" "cc" "from" "subject" "to"
2218                             "larger" "smaller" "flag"))
2219         (total 0)
2220         (length (length from-msgs))
2221         charset set-list end results)
2222     (cond
2223      ((string= "last" search-key)
2224       (let ((numbers (or from-msgs (elmo-folder-list-messages folder))))
2225         (nthcdr (max (- (length numbers)
2226                         (string-to-number (elmo-filter-value filter)))
2227                      0)
2228                 numbers)))
2229      ((string= "first" search-key)
2230       (let* ((numbers (or from-msgs (elmo-folder-list-messages folder)))
2231              (rest (nthcdr (string-to-number (elmo-filter-value filter) )
2232                            numbers)))
2233         (mapcar '(lambda (x) (delete x numbers)) rest)
2234         numbers))
2235      ((string= "flag" search-key)
2236       (elmo-imap4-folder-list-flagged
2237        folder (intern (elmo-filter-value filter))))
2238      ((or (string= "since" search-key)
2239           (string= "before" search-key))
2240       (setq search-key (concat "sent" search-key)
2241             set-list (elmo-imap4-make-number-set-list
2242                       from-msgs
2243                       elmo-imap4-number-set-chop-length)
2244             end nil)
2245       (while (not end)
2246         (setq results
2247               (append
2248                results
2249                (elmo-imap4-response-value
2250                 (elmo-imap4-send-command-wait
2251                  session
2252                  (format
2253                   (if elmo-imap4-use-uid
2254                       "uid search %s%s%s %s"
2255                     "search %s%s%s %s")
2256                   (if from-msgs
2257                       (concat
2258                        (if elmo-imap4-use-uid "uid ")
2259                        (cdr (car set-list))
2260                        " ")
2261                     "")
2262                   (if (eq (elmo-filter-type filter)
2263                           'unmatch)
2264                       "not " "")
2265                   search-key
2266                   (elmo-date-get-description
2267                    (elmo-date-get-datevec
2268                     (elmo-filter-value filter)))))
2269                 'search)))
2270         (setq set-list (cdr set-list)
2271               end (null set-list)))
2272       results)
2273      (t
2274       (setq charset
2275             (if (eq (length (elmo-filter-value filter)) 0)
2276                 (setq charset 'us-ascii)
2277               (elmo-imap4-detect-search-charset
2278                (elmo-filter-value filter)))
2279             set-list (elmo-imap4-make-number-set-list
2280                       from-msgs
2281                       elmo-imap4-number-set-chop-length)
2282             end nil)
2283       (while (not end)
2284         (setq results
2285               (append
2286                results
2287                (elmo-imap4-response-value
2288                 (elmo-imap4-send-command-wait
2289                  session
2290                  (list
2291                   (if elmo-imap4-use-uid "uid ")
2292                   "search "
2293                   "CHARSET "
2294                   (elmo-imap4-astring
2295                    (symbol-name charset))
2296                   " "
2297                   (if from-msgs
2298                       (concat
2299                        (if elmo-imap4-use-uid "uid ")
2300                        (cdr (car set-list))
2301                        " ")
2302                     "")
2303                   (if (eq (elmo-filter-type filter)
2304                           'unmatch)
2305                       "not " "")
2306                   (format "%s%s "
2307                           (if (member
2308                                (elmo-filter-key filter)
2309                                imap-search-keys)
2310                               ""
2311                             "header ")
2312                           (elmo-filter-key filter))
2313                   (elmo-imap4-astring
2314                    (encode-mime-charset-string
2315                     (elmo-filter-value filter) charset))))
2316                 'search)))
2317         (setq set-list (cdr set-list)
2318               end (null set-list)))
2319       results))))
2320
2321 (defun elmo-imap4-search-internal (folder session condition from-msgs)
2322   (let (result)
2323     (cond
2324      ((vectorp condition)
2325       (setq result (elmo-imap4-search-internal-primitive
2326                     folder session condition from-msgs)))
2327      ((eq (car condition) 'and)
2328       (setq result (elmo-imap4-search-internal folder session (nth 1 condition)
2329                                                from-msgs)
2330             result (elmo-list-filter result
2331                                      (elmo-imap4-search-internal
2332                                       folder session (nth 2 condition)
2333                                       from-msgs))))
2334      ((eq (car condition) 'or)
2335       (setq result (elmo-imap4-search-internal
2336                     folder session (nth 1 condition) from-msgs)
2337             result (elmo-uniq-list
2338                     (nconc result
2339                            (elmo-imap4-search-internal
2340                             folder session (nth 2 condition) from-msgs)))
2341             result (sort result '<))))))
2342
2343 (luna-define-method elmo-folder-search :around ((folder elmo-imap4-folder)
2344                                                 condition &optional numbers)
2345   (if (elmo-folder-plugged-p folder)
2346       (save-excursion
2347         (let ((session (elmo-imap4-get-session folder))
2348               ret)
2349           (message "Searching...")
2350           (elmo-imap4-session-select-mailbox
2351            session
2352            (elmo-imap4-folder-mailbox-internal folder))
2353           (setq ret (elmo-imap4-search-internal folder session condition numbers))
2354           (message "Searching...done")
2355           ret))
2356     (luna-call-next-method)))
2357
2358 (luna-define-method elmo-folder-msgdb-create-plugged
2359   ((folder elmo-imap4-folder) numbers flag-table)
2360   (when numbers
2361     (let ((session (elmo-imap4-get-session folder))
2362           (headers
2363            (elmo-uniq-list
2364             (append
2365              '("Subject" "From" "To" "Cc" "Date"
2366                "Message-Id" "References" "In-Reply-To")
2367              (mapcar #'capitalize (elmo-msgdb-extra-fields 'non-virtual)))))
2368           (total 0)
2369           print-length print-depth
2370           rfc2060 set-list)
2371       (setq rfc2060 (elmo-imap4-session-capable-p session 'imap4rev1))
2372       (elmo-with-progress-display (elmo-folder-msgdb-create (length numbers))
2373           "Creating msgdb"
2374         (elmo-imap4-session-select-mailbox
2375          session (elmo-imap4-folder-mailbox-internal folder))
2376         (setq set-list (elmo-imap4-make-number-set-list
2377                         numbers
2378                         elmo-imap4-overview-fetch-chop-length))
2379         ;; Setup callback.
2380         (with-current-buffer (elmo-network-session-buffer session)
2381           (setq elmo-imap4-current-msgdb (elmo-make-msgdb)
2382                 elmo-imap4-seen-messages nil
2383                 elmo-imap4-fetch-callback 'elmo-imap4-fetch-callback-1
2384                 elmo-imap4-fetch-callback-data (cons flag-table folder))
2385           (while set-list
2386             (elmo-imap4-send-command-wait
2387              session
2388              ;; get overview entity from IMAP4
2389              (format "%sfetch %s (%s rfc822.size flags)"
2390                      (if elmo-imap4-use-uid "uid " "")
2391                      (cdr (car set-list))
2392                      (if rfc2060
2393                          (format "body.peek[header.fields %s]" headers)
2394                        (format "%s" headers))))
2395             (setq set-list (cdr set-list)))
2396           (when elmo-imap4-seen-messages
2397             (elmo-imap4-set-flag folder elmo-imap4-seen-messages "\\Seen"))
2398           ;; cannot setup the global flag while retrieval.
2399           (dolist (number (elmo-msgdb-list-messages elmo-imap4-current-msgdb))
2400             (elmo-global-flags-set (elmo-msgdb-flags elmo-imap4-current-msgdb
2401                                                      number)
2402                                    folder number
2403                                    (elmo-message-entity-field
2404                                     (elmo-msgdb-message-entity
2405                                      elmo-imap4-current-msgdb number)
2406                                     'message-id)))
2407           elmo-imap4-current-msgdb)))))
2408
2409 (luna-define-method elmo-folder-set-flag-plugged ((folder elmo-imap4-folder)
2410                                                   numbers flag)
2411   (let ((spec (cdr (assq flag elmo-imap4-flag-specs))))
2412     (elmo-imap4-set-flag folder numbers (or (car spec)
2413                                             (capitalize (symbol-name flag)))
2414                          (nth 1 spec))))
2415
2416 (luna-define-method elmo-folder-unset-flag-plugged ((folder elmo-imap4-folder)
2417                                                     numbers flag)
2418   (let ((spec (cdr (assq flag elmo-imap4-flag-specs))))
2419     (elmo-imap4-set-flag folder numbers (or (car spec)
2420                                             (capitalize (symbol-name flag)))
2421                          (not (nth 1 spec)))))
2422
2423 (luna-define-method elmo-message-use-cache-p ((folder elmo-imap4-folder)
2424                                               number)
2425   elmo-imap4-use-cache)
2426
2427 (luna-define-method elmo-folder-message-appendable-p ((folder elmo-imap4-folder))
2428   (if (elmo-folder-plugged-p folder)
2429       (not (elmo-imap4-session-read-only-internal
2430             (elmo-imap4-get-session folder)))
2431     elmo-enable-disconnected-operation)) ; offline refile.
2432
2433 (luna-define-method elmo-folder-check-plugged ((folder elmo-imap4-folder))
2434   (let ((session (elmo-imap4-get-session folder 'if-exists)))
2435     (when session
2436       (if (string=
2437            (elmo-imap4-session-current-mailbox-internal session)
2438            (elmo-imap4-folder-mailbox-internal folder))
2439           (if elmo-imap4-use-select-to-update-status
2440               (elmo-imap4-session-select-mailbox
2441                session
2442                (elmo-imap4-folder-mailbox-internal folder)
2443                'force)
2444             (elmo-imap4-session-check session))))))
2445
2446 (defsubst elmo-imap4-folder-diff-plugged (folder)
2447   (let ((session (elmo-imap4-get-session folder))
2448         messages new unread response killed uidnext)
2449 ;;; (elmo-imap4-commit spec)
2450     (with-current-buffer (elmo-network-session-buffer session)
2451       (setq elmo-imap4-status-callback nil)
2452       (setq elmo-imap4-status-callback-data nil))
2453     (if elmo-imap4-use-select-to-update-status
2454         (elmo-imap4-session-select-mailbox
2455          session
2456          (elmo-imap4-folder-mailbox-internal folder)))
2457     (setq response
2458           (elmo-imap4-send-command-wait session
2459                                         (list
2460                                          "status "
2461                                          (elmo-imap4-mailbox
2462                                           (elmo-imap4-folder-mailbox-internal
2463                                            folder))
2464                                          " (recent unseen messages uidnext)")))
2465     (setq response (elmo-imap4-response-value response 'status))
2466     (setq messages (elmo-imap4-response-value response 'messages))
2467     (setq uidnext (elmo-imap4-response-value response 'uidnext))
2468     (setq killed (elmo-msgdb-killed-list-load (elmo-folder-msgdb-path folder)))
2469     ;;
2470     (when killed
2471       (when (and (consp (car killed))
2472                  (eq (car (car killed)) 1))
2473         (setq messages (- uidnext (cdr (car killed)) 1)))
2474       (setq messages (- messages
2475                         (elmo-msgdb-killed-list-length (cdr killed)))))
2476     (setq new (elmo-imap4-response-value response 'recent)
2477           unread (elmo-imap4-response-value response 'unseen))
2478     (if (< unread new) (setq new unread))
2479     (list new unread messages)))
2480
2481 (luna-define-method elmo-folder-diff-plugged ((folder elmo-imap4-folder))
2482   (elmo-imap4-folder-diff-plugged folder))
2483
2484 (luna-define-method elmo-folder-diff-async ((folder elmo-imap4-folder))
2485   (setq elmo-imap4-server-diff-async-callback
2486         elmo-folder-diff-async-callback)
2487   (setq elmo-imap4-server-diff-async-callback-data
2488         elmo-folder-diff-async-callback-data)
2489   (elmo-imap4-server-diff-async folder))
2490
2491 (luna-define-method elmo-folder-open :around ((folder elmo-imap4-folder)
2492                                               &optional load-msgdb)
2493   (if (elmo-folder-plugged-p folder)
2494       (let (session mailbox msgdb result response tag)
2495         (condition-case err
2496             (progn
2497               (setq session (elmo-imap4-get-session folder)
2498                     mailbox (elmo-imap4-folder-mailbox-internal folder)
2499                     tag (elmo-imap4-send-command session
2500                                                  (list "select "
2501                                                        (elmo-imap4-mailbox
2502                                                         mailbox))))
2503               (message "Selecting %s..."
2504                        (elmo-folder-name-internal folder))
2505               (if load-msgdb
2506                   (setq msgdb (elmo-folder-msgdb-load folder 'silent)))
2507               (elmo-folder-set-killed-list-internal
2508                folder
2509                (elmo-msgdb-killed-list-load (elmo-folder-msgdb-path folder)))
2510               (if (setq result (elmo-imap4-response-ok-p
2511                                 (setq response
2512                                       (elmo-imap4-read-response session tag))))
2513                   (progn
2514                     (elmo-imap4-session-set-current-mailbox-internal
2515                      session mailbox)
2516                     (elmo-imap4-session-set-read-only-internal
2517                      session
2518                      (nth 1 (assq 'read-only (assq 'ok response))))
2519                     (elmo-imap4-session-set-flags-internal
2520                      session
2521                      (nth 1 (or (assq 'permanentflags response)
2522                                 (assq 'flags response)))))
2523                 (elmo-imap4-session-set-current-mailbox-internal session nil)
2524                 (if (elmo-imap4-response-bye-p response)
2525                     (elmo-imap4-process-bye session)
2526                   (error "%s"
2527                          (or (elmo-imap4-response-error-text response)
2528                              (format "Select %s failed" mailbox)))))
2529               (message "Selecting %s...done"
2530                        (elmo-folder-name-internal folder))
2531               (elmo-folder-set-msgdb-internal
2532                folder msgdb))
2533           (quit
2534            (if (elmo-imap4-response-ok-p response)
2535                (elmo-imap4-session-set-current-mailbox-internal
2536                 session mailbox)
2537              (and session
2538                   (elmo-imap4-session-set-current-mailbox-internal
2539                    session nil))))
2540           (error
2541            (if (elmo-imap4-response-ok-p response)
2542                (elmo-imap4-session-set-current-mailbox-internal
2543                 session mailbox)
2544              (and session
2545                   (elmo-imap4-session-set-current-mailbox-internal
2546                    session nil))))))
2547     (luna-call-next-method)))
2548
2549 ;; elmo-folder-open-internal: do nothing.
2550
2551 (luna-define-method elmo-find-fetch-strategy ((folder elmo-imap4-folder) number
2552                                               &optional
2553                                               ignore-cache
2554                                               require-entireness)
2555   (let ((entity (elmo-message-entity folder number)))
2556     (if (null entity)
2557         (elmo-make-fetch-strategy 'entire)
2558       (let* ((size (elmo-message-entity-field entity 'size))
2559              (message-id (elmo-message-entity-field entity 'message-id))
2560              (cache-file (elmo-file-cache-get message-id))
2561              (use-cache (and (not ignore-cache)
2562                              (elmo-message-use-cache-p folder number)
2563                              (if require-entireness
2564                                  (eq (elmo-file-cache-status cache-file)
2565                                      'entire)
2566                                (elmo-file-cache-status cache-file)))))
2567         (elmo-make-fetch-strategy
2568          (if use-cache
2569              (elmo-file-cache-status cache-file)
2570            (if (and (not require-entireness)
2571                     elmo-message-fetch-threshold
2572                     (integerp size)
2573                     (>= size elmo-message-fetch-threshold)
2574                     (or (not elmo-message-fetch-confirm)
2575                         (not (prog1
2576                                  (y-or-n-p
2577                                   (format
2578                                    "Fetch entire message at once? (%dbytes)"
2579                                    size))
2580                                (message "")))))
2581                'section
2582              'entire))
2583          use-cache
2584          (elmo-message-use-cache-p folder number)
2585          (elmo-file-cache-path cache-file))))))
2586
2587 (luna-define-method elmo-folder-create-plugged ((folder elmo-imap4-folder))
2588   (elmo-imap4-send-command-wait
2589    (elmo-imap4-get-session folder)
2590    (list "create "
2591          (elmo-imap4-mailbox
2592           (elmo-imap4-folder-mailbox-internal folder)))))
2593
2594 (defun elmo-imap4-flags-to-imap (flags)
2595   "Convert FLAGS to the IMAP flag string."
2596   (let ((imap-flag (if (not (memq 'unread flags)) "\\Seen")))
2597     (dolist (flag flags)
2598       (unless (memq flag '(new read unread cached))
2599         (setq imap-flag
2600               (concat imap-flag
2601                       (if imap-flag " ")
2602                       (or (car (cdr (assq flag elmo-imap4-flag-specs)))
2603                           (capitalize (symbol-name flag)))))))
2604     imap-flag))
2605
2606 (luna-define-method elmo-folder-append-buffer
2607   ((folder elmo-imap4-folder) &optional flags number)
2608   (if (elmo-folder-plugged-p folder)
2609       (let ((session (elmo-imap4-get-session folder))
2610             send-buffer result)
2611         (elmo-imap4-session-select-mailbox session
2612                                            (elmo-imap4-folder-mailbox-internal
2613                                             folder))
2614         (setq send-buffer (elmo-imap4-setup-send-buffer))
2615         (unwind-protect
2616             (setq result
2617                   (elmo-imap4-send-command-wait
2618                    session
2619                    (list
2620                     "append "
2621                     (elmo-imap4-mailbox (elmo-imap4-folder-mailbox-internal
2622                                          folder))
2623                     (if (and flags (elmo-folder-use-flag-p folder))
2624                         (concat " (" (elmo-imap4-flags-to-imap flags) ") ")
2625                       " () ")
2626                     (elmo-imap4-buffer-literal send-buffer))))
2627           (kill-buffer send-buffer))
2628         (when result
2629           (elmo-folder-preserve-flags
2630            folder (elmo-msgdb-get-message-id-from-buffer) flags))
2631         result)
2632     ;; Unplugged
2633     (if elmo-enable-disconnected-operation
2634         (elmo-folder-append-buffer-dop folder flags number)
2635       (error "Unplugged"))))
2636
2637 (eval-when-compile
2638   (defmacro elmo-imap4-identical-system-p (folder1 folder2)
2639     "Return t if FOLDER1 and FOLDER2 are in the same IMAP4 system."
2640     `(and (string= (elmo-net-folder-server-internal ,folder1)
2641                    (elmo-net-folder-server-internal ,folder2))
2642           (eq (elmo-net-folder-port-internal ,folder1)
2643               (elmo-net-folder-port-internal ,folder2))
2644           (string= (elmo-net-folder-user-internal ,folder1)
2645                    (elmo-net-folder-user-internal ,folder2)))))
2646
2647 (luna-define-method elmo-folder-next-message-number-plugged
2648   ((folder elmo-imap4-folder))
2649   (let ((session (elmo-imap4-get-session folder))
2650         messages new unread response killed uidnext)
2651     (with-current-buffer (elmo-network-session-buffer session)
2652       (setq elmo-imap4-status-callback nil)
2653       (setq elmo-imap4-status-callback-data nil))
2654     (if elmo-imap4-use-select-to-update-status
2655         (elmo-imap4-session-select-mailbox
2656          session
2657          (elmo-imap4-folder-mailbox-internal folder)))
2658     (setq response
2659           (elmo-imap4-send-command-wait session
2660                                         (list
2661                                          "status "
2662                                          (elmo-imap4-mailbox
2663                                           (elmo-imap4-folder-mailbox-internal
2664                                            folder))
2665                                          " (uidnext)"))
2666           response (elmo-imap4-response-value response 'status))
2667     (elmo-imap4-response-value response 'uidnext)))
2668
2669 (defun elmo-folder-append-messages-imap4-imap4 (dst-folder
2670                                                 src-folder
2671                                                 numbers
2672                                                 same-number)
2673   (if (and (elmo-imap4-identical-system-p dst-folder src-folder)
2674            (elmo-folder-plugged-p dst-folder))
2675       ;; Plugged
2676       (prog1
2677           (elmo-imap4-copy-messages src-folder dst-folder numbers)
2678         (elmo-progress-notify 'elmo-folder-move-messages (length numbers)))
2679     (elmo-folder-append-messages dst-folder src-folder numbers same-number
2680                                  'elmo-folder-append-messages-imap4-imap4)))
2681
2682 (luna-define-method elmo-message-deletable-p ((folder elmo-imap4-folder)
2683                                               number)
2684   (if (elmo-folder-plugged-p folder)
2685       (not (elmo-imap4-session-read-only-internal
2686             (elmo-imap4-get-session folder)))
2687     elmo-enable-disconnected-operation)) ; offline refile.
2688
2689 ;(luna-define-method elmo-message-fetch-unplugged
2690 ;  ((folder elmo-imap4-folder)
2691 ;   number strategy  &optional section outbuf unseen)
2692 ;  (error "%d%s is not cached." number (if section
2693 ;                                         (format "(%s)" section)
2694 ;                                       "")))
2695
2696 (defsubst elmo-imap4-message-fetch (folder number strategy
2697                                            section outbuf unseen)
2698   (let ((session (elmo-imap4-get-session folder))
2699         response)
2700     (elmo-imap4-session-select-mailbox session
2701                                        (elmo-imap4-folder-mailbox-internal
2702                                         folder))
2703     (with-current-buffer (elmo-network-session-buffer session)
2704       (setq elmo-imap4-fetch-callback nil)
2705       (setq elmo-imap4-fetch-callback-data nil))
2706     (elmo-with-progress-display (elmo-retrieve-message
2707                                  (elmo-message-field folder number :size)
2708                                  elmo-imap4-literal-progress-reporter)
2709         "Retrieving"
2710       (setq response
2711             (elmo-imap4-send-command-wait session
2712                                           (format
2713                                            (if elmo-imap4-use-uid
2714                                                "uid fetch %s body%s[%s]"
2715                                              "fetch %s body%s[%s]")
2716                                            number
2717                                            (if unseen ".peek" "")
2718                                            (or section "")))))
2719     (if (setq response (elmo-imap4-response-bodydetail-text
2720                         (elmo-imap4-response-value-all
2721                          response 'fetch)))
2722         (with-current-buffer outbuf
2723           (erase-buffer)
2724           (insert response)
2725           (elmo-delete-cr-buffer)
2726           t))))
2727
2728 (luna-define-method elmo-message-fetch-plugged ((folder elmo-imap4-folder)
2729                                                 number strategy
2730                                                 &optional section
2731                                                 outbuf unseen)
2732   (elmo-imap4-message-fetch folder number strategy section outbuf unseen))
2733
2734 (luna-define-method elmo-message-fetch-field ((folder elmo-imap4-folder)
2735                                               number field)
2736   (let ((session (elmo-imap4-get-session folder)))
2737     (elmo-imap4-session-select-mailbox session
2738                                        (elmo-imap4-folder-mailbox-internal
2739                                         folder))
2740     (with-current-buffer (elmo-network-session-buffer session)
2741       (setq elmo-imap4-fetch-callback nil)
2742       (setq elmo-imap4-fetch-callback-data nil))
2743     (with-temp-buffer
2744       (insert
2745        (elmo-imap4-response-bodydetail-text
2746         (elmo-imap4-response-value
2747          (elmo-imap4-send-command-wait session
2748                                        (concat
2749                                         (if elmo-imap4-use-uid
2750                                             "uid ")
2751                                         (format
2752                                          "fetch %s (body.peek[header.fields (%s)])"
2753                                          number field)))
2754          'fetch)))
2755       (elmo-delete-cr-buffer)
2756       (goto-char (point-min))
2757       (std11-field-body (symbol-name field)))))
2758
2759 (luna-define-method elmo-folder-search-requires-msgdb-p ((folder
2760                                                           elmo-imap4-folder)
2761                                                          condition)
2762   nil)
2763
2764 (autoload 'elmo-global-flags-set "elmo-flag")
2765 (autoload 'elmo-get-global-flags "elmo-flag")
2766
2767 (require 'product)
2768 (product-provide (provide 'elmo-imap4) (require 'elmo-version))
2769
2770 ;;; elmo-imap4.el ends here