elmo/elmo-pop3.el

   1 ;;; elmo-pop3.el -- POP3 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
   6 ;; Author: Yuuichi Teranishi <teranisi@gohome.org>
   7 ;;      Kenichi OKADA <okada@opaopa.org>
   8 ;; Keywords: mail, net news
   9
  10 ;; This file is part of ELMO (Elisp Library for Message Orchestration).
  11
  12 ;; This program is free software; you can redistribute it and/or modify
  13 ;; it under the terms of the GNU General Public License as published by
  14 ;; the Free Software Foundation; either version 2, or (at your option)
  15 ;; any later version.
  16 ;;
  17 ;; This program is distributed in the hope that it will be useful,
  18 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  19 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20 ;; GNU General Public License for more details.
  21 ;;
  22 ;; You should have received a copy of the GNU General Public License
  23 ;; along with GNU Emacs; see the file COPYING.  If not, write to the
  24 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  25 ;; Boston, MA 02111-1307, USA.
  26 ;;
  27
  28 ;;; Commentary:
  29 ;;
  30
  31 ;;; Code:
  32 ;;
  33
  34 (require 'elmo-msgdb)
  35 (require 'elmo-net)
  36
  37 (eval-when-compile
  38   (require 'elmo-util))
  39
  40 (eval-and-compile
  41   (autoload 'md5 "md5"))
  42
  43 (defvar elmo-pop3-exists-exactly t)
  44 (defvar sasl-mechanism-alist)
  45
  46 (defvar elmo-pop3-total-size nil)
  47
  48 (luna-define-class elmo-pop3-session (elmo-network-session))
  49
  50 ;; buffer-local
  51 (defvar elmo-pop3-read-point nil)
  52 (defvar elmo-pop3-number-uidl-hash nil) ; number -> uidl
  53 (defvar elmo-pop3-uidl-number-hash nil) ; uidl -> number
  54 (defvar elmo-pop3-size-hash nil) ; number -> size
  55 (defvar elmo-pop3-uidl-done nil)
  56 (defvar elmo-pop3-list-done nil)
  57
  58 (defvar elmo-pop3-local-variables '(elmo-pop3-read-point
  59                                     elmo-pop3-uidl-number-hash
  60                                     elmo-pop3-number-uidl-hash
  61                                     elmo-pop3-uidl-done
  62                                     elmo-pop3-size-hash
  63                                     elmo-pop3-list-done))
  64
  65 (luna-define-method elmo-network-close-session ((session elmo-pop3-session))
  66   (when (elmo-network-session-process-internal session)
  67     (when (memq (process-status
  68                  (elmo-network-session-process-internal session))
  69                 '(open run))
  70       (elmo-pop3-send-command (elmo-network-session-process-internal session)
  71                               "quit")
  72       (or (elmo-pop3-read-response
  73            (elmo-network-session-process-internal session) t)
  74           (error "POP error: QUIT failed")))
  75     (kill-buffer (process-buffer
  76                   (elmo-network-session-process-internal session)))
  77     (delete-process (elmo-network-session-process-internal session))))
  78
  79 (defun elmo-pop3-get-session (spec &optional if-exists)
  80   (elmo-network-get-session
  81    'elmo-pop3-session
  82    "POP3"
  83    (elmo-pop3-spec-hostname spec)
  84    (elmo-pop3-spec-port spec)
  85    (elmo-pop3-spec-username spec)
  86    (elmo-pop3-spec-auth spec)
  87    (elmo-pop3-spec-stream-type spec)
  88    if-exists))
  89
  90 (defun elmo-pop3-send-command (process command &optional no-erase)
  91   (with-current-buffer (process-buffer process)
  92     (unless no-erase
  93       (erase-buffer))
  94     (goto-char (point-min))
  95     (setq elmo-pop3-read-point (point))
  96     (process-send-string process command)
  97     (process-send-string process "\r\n")))
  98
  99 (defun elmo-pop3-read-response (process &optional not-command)
 100   (with-current-buffer (process-buffer process)
 101     (let ((case-fold-search nil)
 102           (response-string nil)
 103           (response-continue t)
 104           (return-value nil)
 105           match-end)
 106       (while response-continue
 107         (goto-char elmo-pop3-read-point)
 108         (while (not (re-search-forward "\r?\n" nil t))
 109           (accept-process-output process)
 110           (goto-char elmo-pop3-read-point))
 111         (setq match-end (point))
 112         (setq response-string
 113               (buffer-substring elmo-pop3-read-point (- match-end 2)))
 114         (goto-char elmo-pop3-read-point)
 115         (if (looking-at "\\+.*$")
 116             (progn
 117               (setq response-continue nil)
 118               (setq elmo-pop3-read-point match-end)
 119               (setq return-value
 120                     (if return-value
 121                         (concat return-value "\n" response-string)
 122                       response-string)))
 123           (if (looking-at "\\-.*$")
 124               (progn
 125                 (setq response-continue nil)
 126                 (setq elmo-pop3-read-point match-end)
 127                 (setq return-value nil))
 128             (setq elmo-pop3-read-point match-end)
 129             (if not-command
 130                 (setq response-continue nil))
 131             (setq return-value
 132                   (if return-value
 133                       (concat return-value "\n" response-string)
 134                     response-string)))
 135           (setq elmo-pop3-read-point match-end)))
 136       return-value)))
 137
 138 (defun elmo-pop3-process-filter (process output)
 139   (save-excursion
 140     (set-buffer (process-buffer process))
 141     (goto-char (point-max))
 142     (insert output)
 143     (if elmo-pop3-total-size
 144         (message "Retrieving...(%d/%d bytes)."
 145                  (buffer-size) elmo-pop3-total-size))))
 146
 147 (defun elmo-pop3-auth-user (session)
 148   (let ((process (elmo-network-session-process-internal session)))
 149     ;; try USER/PASS
 150     (elmo-pop3-send-command
 151      process
 152      (format "user %s" (elmo-network-session-user-internal session)))
 153     (or (elmo-pop3-read-response process t)
 154         (signal 'elmo-authenticate-error
 155                 '(elmo-pop-auth-user)))
 156     (elmo-pop3-send-command  process
 157                              (format
 158                               "pass %s"
 159                               (elmo-get-passwd
 160                                (elmo-network-session-password-key session))))
 161     (or (elmo-pop3-read-response process t)
 162         (signal 'elmo-authenticate-error
 163                 '(elmo-pop-auth-user)))))
 164
 165 (defun elmo-pop3-auth-apop (session)
 166   (if (string-match "^\+OK .*\\(<[^\>]+>\\)"
 167                     (elmo-network-session-greeting-internal session))
 168       ;; good, APOP ready server
 169       (progn
 170         (elmo-pop3-send-command
 171          (elmo-network-session-process-internal session)
 172          (format "apop %s %s"
 173                  (elmo-network-session-user-internal session)
 174                  (md5
 175                   (concat (match-string
 176                            1
 177                            (elmo-network-session-greeting-internal session))
 178                           (elmo-get-passwd
 179                            (elmo-network-session-password-key session))))))
 180         (or (elmo-pop3-read-response
 181              (elmo-network-session-process-internal session)
 182              t)
 183             (signal 'elmo-authenticate-error
 184                     '(elmo-pop3-auth-apop))))
 185     (signal 'elmo-open-error '(elmo-pop3-auth-apop))))
 186
 187 (luna-define-method elmo-network-initialize-session-buffer :after
 188   ((session elmo-pop3-session) buffer)
 189   (with-current-buffer buffer
 190     (mapcar 'make-variable-buffer-local elmo-pop3-local-variables)))
 191
 192 (luna-define-method elmo-network-initialize-session ((session
 193                                                       elmo-pop3-session))
 194   (let ((process (elmo-network-session-process-internal session))
 195         response mechanism)
 196     (with-current-buffer (process-buffer process)
 197       (set-process-filter process 'elmo-pop3-process-filter)
 198       (setq elmo-pop3-read-point (point-min))
 199       ;; Skip garbage output from process before greeting.
 200       (while (and (memq (process-status process) '(open run))
 201                   (goto-char (point-max))
 202                   (forward-line -1)
 203                   (not (looking-at "+OK")))
 204         (accept-process-output process 1))
 205       (setq elmo-pop3-read-point (point))
 206       (or (elmo-network-session-set-greeting-internal
 207            session
 208            (elmo-pop3-read-response process t))
 209           (signal 'elmo-open-error
 210                   '(elmo-network-intialize-session)))
 211       (when (eq (elmo-network-stream-type-symbol
 212                  (elmo-network-session-stream-type-internal session))
 213                 'starttls)
 214         (elmo-pop3-send-command process "stls")
 215         (if (string-match "^\+OK"
 216                           (elmo-pop3-read-response process))
 217             (starttls-negotiate process)
 218           (signal 'elmo-open-error
 219                   '(elmo-pop3-starttls-error)))))))
 220
 221 (luna-define-method elmo-network-authenticate-session ((session
 222                                                         elmo-pop3-session))
 223   (with-current-buffer (process-buffer
 224                         (elmo-network-session-process-internal session))
 225     (let* ((process (elmo-network-session-process-internal session))
 226            (auth (elmo-network-session-auth-internal session))
 227            (auth (mapcar '(lambda (mechanism) (upcase (symbol-name mechanism)))
 228                          (if (listp auth) auth (list auth))))
 229            sasl-mechanisms
 230            client name step response mechanism
 231            sasl-read-passphrase)
 232       (or (and (string= "USER" (car auth))
 233                (elmo-pop3-auth-user session))
 234           (and (string= "APOP" (car auth))
 235                (elmo-pop3-auth-apop session))
 236           (progn
 237             (require 'sasl)
 238             (setq sasl-mechanisms (mapcar 'car sasl-mechanism-alist))
 239             (setq mechanism (sasl-find-mechanism auth))
 240             (unless mechanism
 241               (signal 'elmo-authenticate-error '(elmo-pop3-auth-no-mechanisms)))
 242             (setq client
 243                   (sasl-make-client
 244                    mechanism
 245                    (elmo-network-session-user-internal session)
 246                    "pop"
 247                    (elmo-network-session-host-internal session)))
 248 ;;;         (if elmo-pop3-auth-user-realm
 249 ;;;             (sasl-client-set-property client 'realm elmo-pop3-auth-user-realm))
 250             (setq name (sasl-mechanism-name mechanism))
 251             (elmo-network-session-set-auth-internal session
 252                                                     (intern (downcase name)))
 253             (setq sasl-read-passphrase
 254                   (function
 255                    (lambda (prompt)
 256                      (elmo-get-passwd
 257                       (elmo-network-session-password-key session)))))
 258             (setq step (sasl-next-step client nil))
 259             (elmo-pop3-send-command
 260              process
 261              (concat "AUTH " name
 262                      (and (sasl-step-data step)
 263                           (concat
 264                            " "
 265                            (elmo-base64-encode-string
 266                             (sasl-step-data step) 'no-line-break))))) ;)
 267             (catch 'done
 268               (while t
 269                 (unless (setq response (elmo-pop3-read-response process t))
 270                   ;; response is NO or BAD.
 271                   (signal 'elmo-authenticate-error
 272                           (list (intern
 273                                  (concat "elmo-pop3-auth-"
 274                                          (downcase name))))))
 275                 (if (string-match "^\+OK" response)
 276                     (if (sasl-next-step client step)
 277                         ;; Bogus server?
 278                         (signal 'elmo-authenticate-error
 279                                 (list (intern
 280                                        (concat "elmo-pop3-auth-"
 281                                                (downcase name)))))
 282                       ;; The authentication process is finished.
 283                       (throw 'done nil)))
 284                 (sasl-step-set-data
 285                  step
 286                  (elmo-base64-decode-string
 287                   (cadr (split-string response " "))))
 288                 (setq step (sasl-next-step client step))
 289                 (elmo-pop3-send-command
 290                  process
 291                  (if (sasl-step-data step)
 292                      (elmo-base64-encode-string (sasl-step-data step)
 293                                                 'no-line-break)
 294                    "")))))))))
 295
 296 (luna-define-method elmo-network-setup-session ((session
 297                                                  elmo-pop3-session))
 298   (let ((process (elmo-network-session-process-internal session))
 299         count response)
 300     (with-current-buffer (process-buffer process)
 301       (setq elmo-pop3-size-hash (elmo-make-hash 31))
 302       ;; To get obarray of uidl and size
 303       (elmo-pop3-send-command process "list")
 304       (if (null (elmo-pop3-read-response process))
 305           (error "POP LIST command failed"))
 306       (if (null (setq response
 307                       (elmo-pop3-read-contents
 308                        (current-buffer) process)))
 309           (error "POP LIST command failed"))
 310       ;; POP server always returns a sequence of serial numbers.
 311       (setq count (elmo-pop3-parse-list-response response))
 312       ;; UIDL
 313       (when elmo-pop3-use-uidl
 314         (setq elmo-pop3-uidl-number-hash (elmo-make-hash (* count 2)))
 315         (setq elmo-pop3-number-uidl-hash (elmo-make-hash (* count 2)))
 316         ;; UIDL
 317         (elmo-pop3-send-command process "uidl")
 318         (unless (elmo-pop3-read-response process)
 319           (error "POP UIDL failed"))
 320         (unless (setq response (elmo-pop3-read-contents
 321                                 (current-buffer) process))
 322           (error "POP UIDL failed"))
 323         (elmo-pop3-parse-uidl-response response)))))
 324
 325 (defun elmo-pop3-read-contents (buffer process)
 326   (save-excursion
 327     (set-buffer buffer)
 328     (let ((case-fold-search nil)
 329           match-end)
 330       (goto-char elmo-pop3-read-point)
 331       (while (not (re-search-forward "^\\.\r\n" nil t))
 332         (accept-process-output process)
 333         (goto-char elmo-pop3-read-point))
 334       (setq match-end (point))
 335       (elmo-delete-cr
 336        (buffer-substring elmo-pop3-read-point
 337                          (- match-end 3))))))
 338
 339 ;; dummy functions
 340 (defun elmo-pop3-list-folders (spec &optional hierarchy) nil)
 341 (defun elmo-pop3-append-msg (spec string) nil nil)
 342 (defun elmo-pop3-folder-creatable-p (spec) nil)
 343 (defun elmo-pop3-create-folder (spec) nil)
 344
 345 (defun elmo-pop3-folder-exists-p (spec)
 346   (if (and elmo-pop3-exists-exactly
 347            (elmo-pop3-plugged-p spec))
 348       (save-excursion
 349         (let (elmo-auto-change-plugged ; don't change plug status.
 350               elmo-pop3-use-uidl       ; No need to use uidl.
 351               session)
 352           (prog1
 353               (setq session (elmo-pop3-get-session spec))
 354             (if session
 355                 (elmo-network-close-session session)))))
 356     t))
 357
 358 (defun elmo-pop3-parse-uidl-response (string)
 359   (let ((buffer (current-buffer))
 360         number list size)
 361     (with-temp-buffer
 362       (let (number uid list)
 363         (insert string)
 364         (goto-char (point-min))
 365         (while (re-search-forward "^\\([0-9]+\\)[\t ]\\([^ \n]+\\)$" nil t)
 366           (setq number  (elmo-match-buffer 1))
 367           (setq uid (elmo-match-buffer 2))
 368           (with-current-buffer buffer
 369             (elmo-set-hash-val uid number elmo-pop3-uidl-number-hash)
 370             (elmo-set-hash-val (concat "#" number) uid
 371                                elmo-pop3-number-uidl-hash))
 372           (setq list (cons uid list)))
 373         (with-current-buffer buffer (setq elmo-pop3-uidl-done t))
 374         (nreverse list)))))
 375
 376 (defun elmo-pop3-parse-list-response (string)
 377   (let ((buffer (current-buffer))
 378         (count 0)
 379         alist)
 380     (with-temp-buffer
 381       (insert string)
 382       (goto-char (point-min))
 383       (while (re-search-forward "^\\([0-9]+\\)[\t ]\\([0-9]+\\)$" nil t)
 384         (setq alist
 385               (cons
 386                (cons (elmo-match-buffer 1)
 387                      (elmo-match-buffer 2))
 388                alist))
 389         (setq count (1+ count)))
 390       (with-current-buffer buffer
 391         (setq elmo-pop3-size-hash (elmo-make-hash (* (length alist) 2)))
 392         (while alist
 393           (elmo-set-hash-val (concat "#" (car (car alist)))
 394                              (cdr (car alist))
 395                              elmo-pop3-size-hash)
 396           (setq alist (cdr alist)))
 397         (setq elmo-pop3-list-done t))
 398       count)))
 399
 400 (defun elmo-pop3-list-location (spec)
 401   (with-current-buffer (process-buffer
 402                         (elmo-network-session-process-internal
 403                          (elmo-pop3-get-session spec)))
 404     (let (list)
 405       (if elmo-pop3-uidl-done
 406           (progn
 407             (mapatoms
 408              (lambda (atom)
 409                (setq list (cons (symbol-name atom) list)))
 410              elmo-pop3-uidl-number-hash)
 411             (nreverse list))
 412         (error "POP3: Error in UIDL")))))
 413
 414 (defun elmo-pop3-list-by-uidl-subr (spec &optional nonsort)
 415   (let ((flist (elmo-list-folder-by-location
 416                 spec
 417                 (elmo-pop3-list-location spec))))
 418     (if nonsort
 419         (cons (elmo-max-of-list flist) (length flist))
 420       (sort flist '<))))
 421
 422 (defun elmo-pop3-list-by-list (spec)
 423   (with-current-buffer (process-buffer
 424                         (elmo-network-session-process-internal
 425                          (elmo-pop3-get-session spec)))
 426     (let (list)
 427       (if elmo-pop3-list-done
 428           (progn
 429             (mapatoms (lambda (atom)
 430                         (setq list (cons (string-to-int
 431                                           (substring (symbol-name atom) 1))
 432                                          list)))
 433                       elmo-pop3-size-hash)
 434             (sort list '<))
 435         (error "POP3: Error in list")))))
 436
 437 (defun elmo-pop3-list-folder (spec &optional nohide)
 438   (let ((killed (and elmo-use-killed-list
 439                      (elmo-msgdb-killed-list-load
 440                       (elmo-msgdb-expand-path spec))))
 441         numbers)
 442     (elmo-pop3-commit spec)
 443     (setq numbers (if elmo-pop3-use-uidl
 444                       (progn
 445                         (elmo-pop3-list-by-uidl-subr spec))
 446                     (elmo-pop3-list-by-list spec)))
 447     (elmo-living-messages numbers killed)))
 448
 449 (defun elmo-pop3-max-of-folder (spec)
 450   (elmo-pop3-commit spec)
 451   (if elmo-pop3-use-uidl
 452       (elmo-pop3-list-by-uidl-subr spec 'nonsort)
 453     (let* ((process
 454             (elmo-network-session-process-internal
 455              (elmo-pop3-get-session spec)))
 456            (total 0)
 457            response)
 458       (with-current-buffer (process-buffer process)
 459         (elmo-pop3-send-command process "STAT")
 460         (setq response (elmo-pop3-read-response process))
 461         ;; response: "^\+OK 2 7570$"
 462         (if (not (string-match "^\+OK[ \t]*\\([0-9]*\\)" response))
 463             (error "POP STAT command failed")
 464           (setq total
 465                 (string-to-int
 466                  (substring response (match-beginning 1)(match-end 1 ))))
 467           (cons total total))))))
 468
 469 (defvar elmo-pop3-header-fetch-chop-length 200)
 470
 471 (defsubst elmo-pop3-next-result-arrived-p ()
 472   (cond
 473    ((eq (following-char) ?+)
 474     (if (re-search-forward "\n\\.\r?\n" nil t)
 475         t
 476       nil))
 477    ((looking-at "-")
 478     (if (search-forward "\n" nil t)
 479         t
 480       nil))
 481    (t
 482     nil)))
 483
 484 (defun elmo-pop3-retrieve-headers (buffer tobuffer process articles)
 485   (save-excursion
 486     (set-buffer buffer)
 487     (erase-buffer)
 488     (let ((number (length articles))
 489           (count 0)
 490           (received 0)
 491           (last-point (point-min)))
 492       ;; Send HEAD commands.
 493       (while articles
 494         (elmo-pop3-send-command process (format
 495                                          "top %s 0" (car articles))
 496                                 'no-erase)
 497 ;;;     (accept-process-output process 1)
 498         (setq articles (cdr articles))
 499         (setq count (1+ count))
 500         ;; Every 200 requests we have to read the stream in
 501         ;; order to avoid deadlocks.
 502         (when (or elmo-pop3-send-command-synchronously
 503                   (null articles)       ;All requests have been sent.
 504                   (zerop (% count elmo-pop3-header-fetch-chop-length)))
 505           (unless elmo-pop3-send-command-synchronously
 506             (accept-process-output process 1))
 507           (discard-input)
 508           (while (progn
 509                    (set-buffer buffer)
 510                    (goto-char last-point)
 511                    ;; Count replies.
 512                    (while (elmo-pop3-next-result-arrived-p)
 513                      (setq last-point (point))
 514                      (setq received (1+ received)))
 515                    (< received count))
 516             (when (> number elmo-display-progress-threshold)
 517               (if (or (zerop (% received 5)) (= received number))
 518                   (elmo-display-progress
 519                    'elmo-pop3-retrieve-headers "Getting headers..."
 520                    (/ (* received 100) number))))
 521             (accept-process-output process 1)
 522 ;;;         (accept-process-output process)
 523             (discard-input))))
 524       ;; Remove all "\r"'s.
 525       (goto-char (point-min))
 526       (while (search-forward "\r\n" nil t)
 527         (replace-match "\n"))
 528       (copy-to-buffer tobuffer (point-min) (point-max)))))
 529
 530 (defalias 'elmo-pop3-msgdb-create 'elmo-pop3-msgdb-create-as-numlist)
 531
 532 (defun elmo-pop3-sort-overview-by-original-number (overview loc-alist)
 533   (if loc-alist
 534       (sort overview
 535             (lambda (ent1 ent2)
 536               (< (elmo-pop3-uidl-to-number
 537                   (cdr (assq (elmo-msgdb-overview-entity-get-number ent1)
 538                              loc-alist)))
 539                  (elmo-pop3-uidl-to-number
 540                   (cdr (assq (elmo-msgdb-overview-entity-get-number ent2)
 541                              loc-alist))))))
 542     overview))
 543
 544 (defun elmo-pop3-sort-msgdb-by-original-number (msgdb)
 545   (message "Sorting...")
 546   (let ((overview (elmo-msgdb-get-overview msgdb)))
 547     (setq overview (elmo-pop3-sort-overview-by-original-number
 548                     overview
 549                     (elmo-msgdb-get-location msgdb)))
 550     (message "Sorting...done")
 551     (list overview (nth 1 msgdb)(nth 2 msgdb)(nth 3 msgdb)(nth 4 msgdb))))
 552
 553 (defun elmo-pop3-msgdb-create-as-numlist (spec numlist new-mark
 554                                                already-mark seen-mark
 555                                                important-mark seen-list
 556                                                &optional msgdb)
 557   (when numlist
 558     (let ((process (elmo-network-session-process-internal
 559                     (elmo-pop3-get-session spec)))
 560           loc-alist)
 561       (if elmo-pop3-use-uidl
 562           (setq loc-alist (if msgdb (elmo-msgdb-get-location msgdb)
 563                             (elmo-msgdb-location-load
 564                              (elmo-msgdb-expand-path spec)))))
 565       (with-current-buffer (process-buffer process)
 566         (elmo-pop3-sort-msgdb-by-original-number
 567          (elmo-pop3-msgdb-create-by-header process numlist
 568                                            new-mark already-mark
 569                                            seen-mark seen-list
 570                                            loc-alist))))))
 571
 572 (defun elmo-pop3-uidl-to-number (uidl)
 573   (string-to-number (elmo-get-hash-val uidl
 574                                        elmo-pop3-uidl-number-hash)))
 575
 576 (defun elmo-pop3-number-to-uidl (number)
 577   (elmo-get-hash-val (format "#%d" number)
 578                      elmo-pop3-number-uidl-hash))
 579
 580 (defun elmo-pop3-number-to-size (number)
 581   (elmo-get-hash-val (format "#%d" number)
 582                      elmo-pop3-size-hash))
 583
 584 (defun elmo-pop3-msgdb-create-by-header (process numlist
 585                                                  new-mark already-mark
 586                                                  seen-mark
 587                                                  seen-list
 588                                                  loc-alist)
 589   (let ((tmp-buffer (get-buffer-create " *ELMO Overview TMP*")))
 590     (with-current-buffer (process-buffer process)
 591       (if loc-alist ; use uidl.
 592           (setq numlist
 593                 (delq
 594                  nil
 595                  (mapcar
 596                   (lambda (number)
 597                     (elmo-pop3-uidl-to-number (cdr (assq number loc-alist))))
 598                   numlist))))
 599       (elmo-pop3-retrieve-headers (process-buffer process)
 600                                   tmp-buffer process numlist)
 601       (prog1
 602           (elmo-pop3-msgdb-create-message
 603            tmp-buffer
 604            process
 605            (length numlist)
 606            numlist
 607            new-mark already-mark seen-mark seen-list loc-alist)
 608         (kill-buffer tmp-buffer)))))
 609
 610 (defun elmo-pop3-msgdb-create-message (buffer
 611                                        process
 612                                        num
 613                                        numlist new-mark already-mark
 614                                        seen-mark
 615                                        seen-list
 616                                        loc-alist)
 617   (save-excursion
 618     (let (beg overview number-alist mark-alist
 619               entity i number message-id gmark seen size)
 620       (set-buffer buffer)
 621       (elmo-set-buffer-multibyte default-enable-multibyte-characters)
 622       (goto-char (point-min))
 623       (setq i 0)
 624       (message "Creating msgdb...")
 625       (while (not (eobp))
 626         (setq beg (save-excursion (forward-line 1) (point)))
 627         (elmo-pop3-next-result-arrived-p)
 628         (save-excursion
 629           (forward-line -1)
 630           (save-restriction
 631             (narrow-to-region beg (point))
 632             (setq entity
 633                   (elmo-msgdb-create-overview-from-buffer
 634                    (car numlist)))
 635             (setq numlist (cdr numlist))
 636             (when entity
 637               (setq overview
 638                     (elmo-msgdb-append-element
 639                      overview entity))
 640               (with-current-buffer (process-buffer process)
 641                 (elmo-msgdb-overview-entity-set-size
 642                  entity
 643                  (string-to-number
 644                   (elmo-pop3-number-to-size
 645                    (elmo-msgdb-overview-entity-get-number entity))))
 646                 (if (setq number
 647                           (car
 648                            (rassoc
 649                             (elmo-pop3-number-to-uidl
 650                              (elmo-msgdb-overview-entity-get-number entity))
 651                             loc-alist)))
 652                     (elmo-msgdb-overview-entity-set-number entity number)))
 653               (setq number-alist
 654                     (elmo-msgdb-number-add
 655                      number-alist
 656                      (elmo-msgdb-overview-entity-get-number entity)
 657                      (car entity)))
 658               (setq message-id (car entity))
 659               (setq seen (member message-id seen-list))
 660               (if (setq gmark (or (elmo-msgdb-global-mark-get message-id)
 661                                   (if (elmo-cache-exists-p
 662                                        message-id) ; XXX
 663                                       (if seen
 664                                           nil
 665                                         already-mark)
 666                                     (if seen
 667                                         (if elmo-pop3-use-cache
 668                                             seen-mark)
 669                                       new-mark))))
 670                   (setq mark-alist
 671                         (elmo-msgdb-mark-append
 672                          mark-alist
 673                          (elmo-msgdb-overview-entity-get-number entity)
 674                          gmark))))))
 675         (when (> num elmo-display-progress-threshold)
 676           (setq i (1+ i))
 677           (if (or (zerop (% i 5)) (= i num))
 678               (elmo-display-progress
 679                'elmo-pop3-msgdb-create-message "Creating msgdb..."
 680                (/ (* i 100) num)))))
 681       (list overview number-alist mark-alist loc-alist))))
 682
 683 (defun elmo-pop3-read-body (process outbuf)
 684   (with-current-buffer (process-buffer process)
 685     (let ((start elmo-pop3-read-point)
 686           end)
 687       (goto-char start)
 688       (while (not (re-search-forward "^\\.\r?\n" nil t))
 689         (accept-process-output process)
 690         (goto-char start))
 691       (setq end (point))
 692       (with-current-buffer outbuf
 693         (erase-buffer)
 694         (insert-buffer-substring (process-buffer process) start (- end 3))
 695         (elmo-delete-cr-get-content-type)))))
 696
 697 (defun elmo-pop3-read-msg (spec number outbuf &optional msgdb unread)
 698   (let* ((loc-alist (if elmo-pop3-use-uidl
 699                         (if msgdb
 700                             (elmo-msgdb-get-location msgdb)
 701                           (elmo-msgdb-location-load
 702                            (elmo-msgdb-expand-path spec)))))
 703          (process (elmo-network-session-process-internal
 704                    (elmo-pop3-get-session spec)))
 705          size response errmsg msg)
 706     (with-current-buffer (process-buffer process)
 707       (if loc-alist
 708           (setq number (elmo-pop3-uidl-to-number
 709                         (cdr (assq number loc-alist)))))
 710       (setq size (string-to-number
 711                   (elmo-pop3-number-to-size number)))
 712       (when number
 713         (elmo-pop3-send-command process
 714                                 (format "retr %s" number))
 715         (setq elmo-pop3-total-size size)
 716         (unless elmo-inhibit-display-retrieval-progress
 717           (setq elmo-pop3-total-size size)
 718           (elmo-display-progress
 719            'elmo-pop3-display-retrieval-progress
 720            (format "Retrieving (0/%d bytes)..." elmo-pop3-total-size)
 721            0))
 722         (unwind-protect
 723             (progn
 724               (when (null (setq response (elmo-pop3-read-response
 725                                           process t)))
 726                 (error "Fetching message failed"))
 727               (setq response (elmo-pop3-read-body process outbuf)))
 728           (setq elmo-pop3-total-size nil))
 729         (unless elmo-inhibit-display-retrieval-progress
 730           (elmo-display-progress
 731            'elmo-display-retrieval-progress "" 100)  ; remove progress bar.
 732           (message "Retrieving...done."))
 733         (set-buffer outbuf)
 734         (goto-char (point-min))
 735         (while (re-search-forward "^\\." nil t)
 736           (replace-match "")
 737           (forward-line))
 738         response))))
 739
 740 (defun elmo-pop3-delete-msg (process number loc-alist)
 741   (with-current-buffer (process-buffer process)
 742     (let (response errmsg msg)
 743       (if loc-alist
 744           (setq number (elmo-pop3-uidl-to-number
 745                         (cdr (assq number loc-alist)))))
 746       (if number
 747           (progn
 748             (elmo-pop3-send-command process
 749                                     (format "dele %s" number))
 750             (when (null (setq response (elmo-pop3-read-response
 751                                         process t)))
 752               (error "Deleting message failed")))
 753         (error "Deleting message failed")))))
 754
 755 (defun elmo-pop3-delete-msgs (spec msgs &optional msgdb)
 756   (let ((loc-alist (if elmo-pop3-use-uidl
 757                        (if msgdb
 758                            (elmo-msgdb-get-location msgdb)
 759                          (elmo-msgdb-location-load
 760                           (elmo-msgdb-expand-path spec)))))
 761         (process (elmo-network-session-process-internal
 762                   (elmo-pop3-get-session spec))))
 763     (mapcar '(lambda (msg) (elmo-pop3-delete-msg
 764                             process msg loc-alist))
 765             msgs)))
 766
 767 (defun elmo-pop3-search (spec condition &optional numlist)
 768   (error "Searching in pop3 folder is not implemented yet"))
 769
 770 (defun elmo-pop3-use-cache-p (spec number)
 771   elmo-pop3-use-cache)
 772
 773 (defun elmo-pop3-local-file-p (spec number)
 774   nil)
 775
 776 (defun elmo-pop3-port-label (spec)
 777   (concat "pop3"
 778           (if (elmo-pop3-spec-stream-type spec)
 779               (concat "!" (symbol-name
 780                            (elmo-network-stream-type-symbol
 781                             (elmo-pop3-spec-stream-type spec)))))))
 782
 783 (defsubst elmo-pop3-portinfo (spec)
 784   (list (elmo-pop3-spec-hostname spec)
 785         (elmo-pop3-spec-port spec)))
 786
 787 (defun elmo-pop3-plugged-p (spec)
 788   (apply 'elmo-plugged-p
 789          (append (elmo-pop3-portinfo spec)
 790                  (list nil (quote (elmo-pop3-port-label spec))))))
 791
 792 (defun elmo-pop3-set-plugged (spec plugged add)
 793   (apply 'elmo-set-plugged plugged
 794          (append (elmo-pop3-portinfo spec)
 795                  (list nil nil (quote (elmo-pop3-port-label spec)) add))))
 796
 797 (defalias 'elmo-pop3-sync-number-alist
 798   'elmo-generic-sync-number-alist)
 799 (defalias 'elmo-pop3-list-folder-unread
 800   'elmo-generic-list-folder-unread)
 801 (defalias 'elmo-pop3-list-folder-important
 802   'elmo-generic-list-folder-important)
 803 (defalias 'elmo-pop3-folder-diff 'elmo-generic-folder-diff)
 804
 805 (defun elmo-pop3-commit (spec)
 806   (if (elmo-pop3-plugged-p spec)
 807       (let ((session (elmo-pop3-get-session spec 'if-exists)))
 808         (and session
 809              (elmo-network-close-session session)))))
 810
 811
 812 (require 'product)
 813 (product-provide (provide 'elmo-pop3) (require 'elmo-version))
 814
 815 ;;; elmo-pop3.el ends here