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 (defvar elmo-pop3-lock nil)
  58
  59 (defvar elmo-pop3-local-variables '(elmo-pop3-read-point
  60                                     elmo-pop3-uidl-number-hash
  61                                     elmo-pop3-number-uidl-hash
  62                                     elmo-pop3-uidl-done
  63                                     elmo-pop3-size-hash
  64                                     elmo-pop3-list-done
  65                                     elmo-pop3-lock))
  66
  67 (luna-define-method elmo-network-close-session ((session elmo-pop3-session))
  68   (when (elmo-network-session-process-internal session)
  69     (when (memq (process-status
  70                  (elmo-network-session-process-internal session))
  71                 '(open run))
  72       (elmo-pop3-send-command (elmo-network-session-process-internal session)
  73                               "quit")
  74       (or (elmo-pop3-read-response
  75            (elmo-network-session-process-internal session) t)
  76           (error "POP error: QUIT failed")))
  77     (kill-buffer (process-buffer
  78                   (elmo-network-session-process-internal session)))
  79     (delete-process (elmo-network-session-process-internal session))))
  80
  81 (defun elmo-pop3-get-session (spec &optional if-exists)
  82   (elmo-network-get-session
  83    'elmo-pop3-session
  84    "POP3"
  85    (elmo-pop3-spec-hostname spec)
  86    (elmo-pop3-spec-port spec)
  87    (elmo-pop3-spec-username spec)
  88    (elmo-pop3-spec-auth spec)
  89    (elmo-pop3-spec-stream-type spec)
  90    if-exists))
  91
  92 (defun elmo-pop3-send-command (process command &optional no-erase)
  93   (with-current-buffer (process-buffer process)
  94     (unless no-erase
  95       (erase-buffer))
  96     (goto-char (point-min))
  97     (setq elmo-pop3-read-point (point))
  98     (elmo-pop3-lock)
  99     (process-send-string process command)
 100     (process-send-string process "\r\n")))
 101
 102 (defun elmo-pop3-read-response (process &optional not-command)
 103   (with-current-buffer (process-buffer process)
 104     (let ((case-fold-search nil)
 105           (response-string nil)
 106           (response-continue t)
 107           (return-value nil)
 108           match-end)
 109       (while response-continue
 110         (goto-char elmo-pop3-read-point)
 111         (while (not (re-search-forward "\r?\n" nil t))
 112           (accept-process-output process)
 113           (goto-char elmo-pop3-read-point))
 114         (setq match-end (point))
 115         (setq response-string
 116               (buffer-substring elmo-pop3-read-point (- match-end 2)))
 117         (goto-char elmo-pop3-read-point)
 118         (if (looking-at "\\+.*$")
 119             (progn
 120               (setq response-continue nil)
 121               (setq elmo-pop3-read-point match-end)
 122               (setq return-value
 123                     (if return-value
 124                         (concat return-value "\n" response-string)
 125                       response-string)))
 126           (if (looking-at "\\-.*$")
 127               (progn
 128                 (setq response-continue nil)
 129                 (setq elmo-pop3-read-point match-end)
 130                 (setq return-value nil))
 131             (setq elmo-pop3-read-point match-end)
 132             (if not-command
 133                 (setq response-continue nil))
 134             (setq return-value
 135                   (if return-value
 136                       (concat return-value "\n" response-string)
 137                     response-string)))
 138           (setq elmo-pop3-read-point match-end)))
 139       (elmo-pop3-unlock)
 140       return-value)))
 141
 142 (defun elmo-pop3-process-filter (process output)
 143   (save-excursion
 144     (set-buffer (process-buffer process))
 145     (goto-char (point-max))
 146     (insert output)
 147     (if elmo-pop3-total-size
 148         (message "Retrieving...(%d/%d bytes)."
 149                  (buffer-size) elmo-pop3-total-size))))
 150
 151 (defun elmo-pop3-auth-user (session)
 152   (let ((process (elmo-network-session-process-internal session)))
 153     ;; try USER/PASS
 154     (elmo-pop3-send-command
 155      process
 156      (format "user %s" (elmo-network-session-user-internal session)))
 157     (or (elmo-pop3-read-response process t)
 158         (signal 'elmo-authenticate-error
 159                 '(elmo-pop-auth-user)))
 160     (elmo-pop3-send-command  process
 161                              (format
 162                               "pass %s"
 163                               (elmo-get-passwd
 164                                (elmo-network-session-password-key session))))
 165     (or (elmo-pop3-read-response process t)
 166         (signal 'elmo-authenticate-error
 167                 '(elmo-pop-auth-user)))))
 168
 169 (defun elmo-pop3-auth-apop (session)
 170   (if (string-match "^\+OK .*\\(<[^\>]+>\\)"
 171                     (elmo-network-session-greeting-internal session))
 172       ;; good, APOP ready server
 173       (progn
 174         (elmo-pop3-send-command
 175          (elmo-network-session-process-internal session)
 176          (format "apop %s %s"
 177                  (elmo-network-session-user-internal session)
 178                  (md5
 179                   (concat (match-string
 180                            1
 181                            (elmo-network-session-greeting-internal session))
 182                           (elmo-get-passwd
 183                            (elmo-network-session-password-key session))))))
 184         (or (elmo-pop3-read-response
 185              (elmo-network-session-process-internal session)
 186              t)
 187             (signal 'elmo-authenticate-error
 188                     '(elmo-pop3-auth-apop))))
 189     (signal 'elmo-open-error '(elmo-pop3-auth-apop))))
 190
 191 (luna-define-method elmo-network-initialize-session-buffer :after
 192   ((session elmo-pop3-session) buffer)
 193   (with-current-buffer buffer
 194     (mapcar 'make-variable-buffer-local elmo-pop3-local-variables)))
 195
 196 (luna-define-method elmo-network-initialize-session ((session
 197                                                       elmo-pop3-session))
 198   (let ((process (elmo-network-session-process-internal session))
 199         response mechanism)
 200     (with-current-buffer (process-buffer process)
 201       (set-process-filter process 'elmo-pop3-process-filter)
 202       (setq elmo-pop3-read-point (point-min))
 203       ;; Skip garbage output from process before greeting.
 204       (while (and (memq (process-status process) '(open run))
 205                   (goto-char (point-max))
 206                   (forward-line -1)
 207                   (not (looking-at "+OK")))
 208         (accept-process-output process 1))
 209       (setq elmo-pop3-read-point (point))
 210       (or (elmo-network-session-set-greeting-internal
 211            session
 212            (elmo-pop3-read-response process t))
 213           (signal 'elmo-open-error
 214                   '(elmo-network-intialize-session)))
 215       (when (eq (elmo-network-stream-type-symbol
 216                  (elmo-network-session-stream-type-internal session))
 217                 'starttls)
 218         (elmo-pop3-send-command process "stls")
 219         (if (string-match "^\+OK"
 220                           (elmo-pop3-read-response process))
 221             (starttls-negotiate process)
 222           (signal 'elmo-open-error
 223                   '(elmo-pop3-starttls-error)))))))
 224
 225 (luna-define-method elmo-network-authenticate-session ((session
 226                                                         elmo-pop3-session))
 227   (with-current-buffer (process-buffer
 228                         (elmo-network-session-process-internal session))
 229     (let* ((process (elmo-network-session-process-internal session))
 230            (auth (elmo-network-session-auth-internal session))
 231            (auth (mapcar '(lambda (mechanism) (upcase (symbol-name mechanism)))
 232                          (if (listp auth) auth (list auth))))
 233            sasl-mechanisms
 234            client name step response mechanism
 235            sasl-read-passphrase)
 236       (or (and (string= "USER" (car auth))
 237                (elmo-pop3-auth-user session))
 238           (and (string= "APOP" (car auth))
 239                (elmo-pop3-auth-apop session))
 240           (progn
 241             (require 'sasl)
 242             (setq sasl-mechanisms (mapcar 'car sasl-mechanism-alist))
 243             (setq mechanism (sasl-find-mechanism auth))
 244             (unless mechanism
 245               (signal 'elmo-authenticate-error '(elmo-pop3-auth-no-mechanisms)))
 246             (setq client
 247                   (sasl-make-client
 248                    mechanism
 249                    (elmo-network-session-user-internal session)
 250                    "pop"
 251                    (elmo-network-session-host-internal session)))
 252 ;;;         (if elmo-pop3-auth-user-realm
 253 ;;;             (sasl-client-set-property client 'realm elmo-pop3-auth-user-realm))
 254             (setq name (sasl-mechanism-name mechanism))
 255             (elmo-network-session-set-auth-internal session
 256                                                     (intern (downcase name)))
 257             (setq sasl-read-passphrase
 258                   (function
 259                    (lambda (prompt)
 260                      (elmo-get-passwd
 261                       (elmo-network-session-password-key session)))))
 262             (setq step (sasl-next-step client nil))
 263             (elmo-pop3-send-command
 264              process
 265              (concat "AUTH " name
 266                      (and (sasl-step-data step)
 267                           (concat
 268                            " "
 269                            (elmo-base64-encode-string
 270                             (sasl-step-data step) 'no-line-break))))) ;)
 271             (catch 'done
 272               (while t
 273                 (unless (setq response (elmo-pop3-read-response process t))
 274                   ;; response is NO or BAD.
 275                   (signal 'elmo-authenticate-error
 276                           (list (intern
 277                                  (concat "elmo-pop3-auth-"
 278                                          (downcase name))))))
 279                 (if (string-match "^\+OK" response)
 280                     (if (sasl-next-step client step)
 281                         ;; Bogus server?
 282                         (signal 'elmo-authenticate-error
 283                                 (list (intern
 284                                        (concat "elmo-pop3-auth-"
 285                                                (downcase name)))))
 286                       ;; The authentication process is finished.
 287                       (throw 'done nil)))
 288                 (sasl-step-set-data
 289                  step
 290                  (elmo-base64-decode-string
 291                   (cadr (split-string response " "))))
 292                 (setq step (sasl-next-step client step))
 293                 (elmo-pop3-send-command
 294                  process
 295                  (if (sasl-step-data step)
 296                      (elmo-base64-encode-string (sasl-step-data step)
 297                                                 'no-line-break)
 298                    "")))))))))
 299
 300 (luna-define-method elmo-network-setup-session ((session
 301                                                  elmo-pop3-session))
 302   (let ((process (elmo-network-session-process-internal session))
 303         count response)
 304     (with-current-buffer (process-buffer process)
 305       (setq elmo-pop3-size-hash (elmo-make-hash 31))
 306       ;; To get obarray of uidl and size
 307       (elmo-pop3-send-command process "list")
 308       (if (null (elmo-pop3-read-response process))
 309           (error "POP LIST command failed"))
 310       (if (null (setq response
 311                       (elmo-pop3-read-contents
 312                        (current-buffer) process)))
 313           (error "POP LIST command failed"))
 314       ;; POP server always returns a sequence of serial numbers.
 315       (setq count (elmo-pop3-parse-list-response response))
 316       ;; UIDL
 317       (when elmo-pop3-use-uidl
 318         (setq elmo-pop3-uidl-number-hash (elmo-make-hash (* count 2)))
 319         (setq elmo-pop3-number-uidl-hash (elmo-make-hash (* count 2)))
 320         ;; UIDL
 321         (elmo-pop3-send-command process "uidl")
 322         (unless (elmo-pop3-read-response process)
 323           (error "POP UIDL failed"))
 324         (unless (setq response (elmo-pop3-read-contents
 325                                 (current-buffer) process))
 326           (error "POP UIDL failed"))
 327         (elmo-pop3-parse-uidl-response response)))))
 328
 329 (defun elmo-pop3-read-contents (buffer process)
 330   (with-current-buffer buffer
 331     (let ((case-fold-search nil)
 332           match-end)
 333       (goto-char elmo-pop3-read-point)
 334       (while (not (re-search-forward "^\\.\r\n" nil t))
 335         (accept-process-output process)
 336         (goto-char elmo-pop3-read-point))
 337       (setq match-end (point))
 338       (elmo-pop3-unlock)
 339       (elmo-delete-cr
 340        (buffer-substring elmo-pop3-read-point
 341                          (- match-end 3))))))
 342
 343 ;; dummy functions
 344 (defun elmo-pop3-list-folders (spec &optional hierarchy) nil)
 345 (defun elmo-pop3-append-msg (spec string) nil nil)
 346 (defun elmo-pop3-folder-creatable-p (spec) nil)
 347 (defun elmo-pop3-create-folder (spec) nil)
 348
 349 (defun elmo-pop3-folder-exists-p (spec)
 350   (if (and elmo-pop3-exists-exactly
 351            (elmo-pop3-plugged-p spec))
 352       (save-excursion
 353         (let (elmo-auto-change-plugged ; don't change plug status.
 354               elmo-pop3-use-uidl       ; No need to use uidl.
 355               session)
 356           (prog1
 357               (setq session (elmo-pop3-get-session spec))
 358             (if session
 359                 (elmo-network-close-session session)))))
 360     t))
 361
 362 (defun elmo-pop3-parse-uidl-response (string)
 363   (let ((buffer (current-buffer))
 364         number list size)
 365     (with-temp-buffer
 366       (let (number uid list)
 367         (insert string)
 368         (goto-char (point-min))
 369         (while (re-search-forward "^\\([0-9]+\\)[\t ]\\([^ \n]+\\)$" nil t)
 370           (setq number  (elmo-match-buffer 1))
 371           (setq uid (elmo-match-buffer 2))
 372           (with-current-buffer buffer
 373             (elmo-set-hash-val uid number elmo-pop3-uidl-number-hash)
 374             (elmo-set-hash-val (concat "#" number) uid
 375                                elmo-pop3-number-uidl-hash))
 376           (setq list (cons uid list)))
 377         (with-current-buffer buffer (setq elmo-pop3-uidl-done t))
 378         (nreverse list)))))
 379
 380 (defun elmo-pop3-parse-list-response (string)
 381   (let ((buffer (current-buffer))
 382         (count 0)
 383         alist)
 384     (with-temp-buffer
 385       (insert string)
 386       (goto-char (point-min))
 387       (while (re-search-forward "^\\([0-9]+\\)[\t ]\\([0-9]+\\)$" nil t)
 388         (setq alist
 389               (cons
 390                (cons (elmo-match-buffer 1)
 391                      (elmo-match-buffer 2))
 392                alist))
 393         (setq count (1+ count)))
 394       (with-current-buffer buffer
 395         (setq elmo-pop3-size-hash (elmo-make-hash (* (length alist) 2)))
 396         (while alist
 397           (elmo-set-hash-val (concat "#" (car (car alist)))
 398                              (cdr (car alist))
 399                              elmo-pop3-size-hash)
 400           (setq alist (cdr alist)))
 401         (setq elmo-pop3-list-done t))
 402       count)))
 403
 404 (defun elmo-pop3-list-location (spec)
 405   (with-current-buffer (process-buffer
 406                         (elmo-network-session-process-internal
 407                          (elmo-pop3-get-session spec)))
 408     (let (list)
 409       (if elmo-pop3-uidl-done
 410           (progn
 411             (mapatoms
 412              (lambda (atom)
 413                (setq list (cons (symbol-name atom) list)))
 414              elmo-pop3-uidl-number-hash)
 415             (nreverse list))
 416         (error "POP3: Error in UIDL")))))
 417
 418 (defun elmo-pop3-list-by-uidl-subr (spec &optional nonsort)
 419   (let ((flist (elmo-list-folder-by-location
 420                 spec
 421                 (elmo-pop3-list-location spec))))
 422     (if nonsort
 423         (cons (elmo-max-of-list flist) (length flist))
 424       (sort flist '<))))
 425
 426 (defun elmo-pop3-list-by-list (spec)
 427   (with-current-buffer (process-buffer
 428                         (elmo-network-session-process-internal
 429                          (elmo-pop3-get-session spec)))
 430     (let (list)
 431       (if elmo-pop3-list-done
 432           (progn
 433             (mapatoms (lambda (atom)
 434                         (setq list (cons (string-to-int
 435                                           (substring (symbol-name atom) 1))
 436                                          list)))
 437                       elmo-pop3-size-hash)
 438             (sort list '<))
 439         (error "POP3: Error in list")))))
 440
 441 (defun elmo-pop3-list-folder (spec &optional nohide)
 442   (let ((killed (and elmo-use-killed-list
 443                      (elmo-msgdb-killed-list-load
 444                       (elmo-msgdb-expand-path spec))))
 445         numbers)
 446     (elmo-pop3-commit spec)
 447     (setq numbers (if elmo-pop3-use-uidl
 448                       (progn
 449                         (elmo-pop3-list-by-uidl-subr spec))
 450                     (elmo-pop3-list-by-list spec)))
 451     (elmo-living-messages numbers killed)))
 452
 453 (defun elmo-pop3-max-of-folder (spec)
 454   (elmo-pop3-commit spec)
 455   (if elmo-pop3-use-uidl
 456       (elmo-pop3-list-by-uidl-subr spec 'nonsort)
 457     (let* ((process
 458             (elmo-network-session-process-internal
 459              (elmo-pop3-get-session spec)))
 460            (total 0)
 461            response)
 462       (with-current-buffer (process-buffer process)
 463         (elmo-pop3-send-command process "STAT")
 464         (setq response (elmo-pop3-read-response process))
 465         ;; response: "^\+OK 2 7570$"
 466         (if (not (string-match "^\+OK[ \t]*\\([0-9]*\\)" response))
 467             (error "POP STAT command failed")
 468           (setq total
 469                 (string-to-int
 470                  (substring response (match-beginning 1)(match-end 1 ))))
 471           (cons total total))))))
 472
 473 (defvar elmo-pop3-header-fetch-chop-length 200)
 474
 475 (defsubst elmo-pop3-next-result-arrived-p ()
 476   (cond
 477    ((eq (following-char) ?+)
 478     (if (re-search-forward "\n\\.\r?\n" nil t)
 479         t
 480       nil))
 481    ((looking-at "-")
 482     (if (search-forward "\n" nil t)
 483         t
 484       nil))
 485    (t
 486     nil)))
 487
 488 (defun elmo-pop3-lock ()
 489   "Lock pop3 process."
 490   (setq elmo-pop3-lock t))
 491
 492 (defun elmo-pop3-unlock ()
 493   "Unlock pop3 process."
 494   (setq elmo-pop3-lock nil))
 495
 496 (defun elmo-pop3-locked-p (process)
 497   "Return t if pop3 PROCESS is locked."
 498   (with-current-buffer (process-buffer process)
 499     elmo-pop3-lock))
 500
 501 (defun elmo-pop3-retrieve-headers (buffer tobuffer process articles)
 502   (save-excursion
 503     (set-buffer buffer)
 504     (erase-buffer)
 505     (let ((number (length articles))
 506           (count 0)
 507           (received 0)
 508           (last-point (point-min)))
 509       ;; Send HEAD commands.
 510       (while articles
 511         (elmo-pop3-send-command process (format
 512                                          "top %s 0" (car articles))
 513                                 'no-erase)
 514 ;;;     (accept-process-output process 1)
 515         (setq articles (cdr articles))
 516         (setq count (1+ count))
 517         ;; Every 200 requests we have to read the stream in
 518         ;; order to avoid deadlocks.
 519         (when (or elmo-pop3-send-command-synchronously
 520                   (null articles)       ;All requests have been sent.
 521                   (zerop (% count elmo-pop3-header-fetch-chop-length)))
 522           (unless elmo-pop3-send-command-synchronously
 523             (accept-process-output process 1))
 524           (discard-input)
 525           (while (progn
 526                    (set-buffer buffer)
 527                    (goto-char last-point)
 528                    ;; Count replies.
 529                    (while (elmo-pop3-next-result-arrived-p)
 530                      (setq last-point (point))
 531                      (setq received (1+ received)))
 532                    (< received count))
 533             (when (> number elmo-display-progress-threshold)
 534               (if (or (zerop (% received 5)) (= received number))
 535                   (elmo-display-progress
 536                    'elmo-pop3-retrieve-headers "Getting headers..."
 537                    (/ (* received 100) number))))
 538             (accept-process-output process 1)
 539 ;;;         (accept-process-output process)
 540             (discard-input))))
 541       ;; Remove all "\r"'s.
 542       (goto-char (point-min))
 543       (while (search-forward "\r\n" nil t)
 544         (replace-match "\n"))
 545       (copy-to-buffer tobuffer (point-min) (point-max)))))
 546
 547 (defalias 'elmo-pop3-msgdb-create 'elmo-pop3-msgdb-create-as-numlist)
 548
 549 (defun elmo-pop3-sort-overview-by-original-number (overview loc-alist)
 550   (if loc-alist
 551       (sort overview
 552             (lambda (ent1 ent2)
 553               (< (elmo-pop3-uidl-to-number
 554                   (cdr (assq (elmo-msgdb-overview-entity-get-number ent1)
 555                              loc-alist)))
 556                  (elmo-pop3-uidl-to-number
 557                   (cdr (assq (elmo-msgdb-overview-entity-get-number ent2)
 558                              loc-alist))))))
 559     overview))
 560
 561 (defun elmo-pop3-sort-msgdb-by-original-number (msgdb)
 562   (message "Sorting...")
 563   (let ((overview (elmo-msgdb-get-overview msgdb)))
 564     (setq overview (elmo-pop3-sort-overview-by-original-number
 565                     overview
 566                     (elmo-msgdb-get-location msgdb)))
 567     (message "Sorting...done")
 568     (list overview (nth 1 msgdb)(nth 2 msgdb)(nth 3 msgdb)(nth 4 msgdb))))
 569
 570 (defun elmo-pop3-msgdb-create-as-numlist (spec numlist new-mark
 571                                                already-mark seen-mark
 572                                                important-mark seen-list
 573                                                &optional msgdb)
 574   (when numlist
 575     (let ((process (elmo-network-session-process-internal
 576                     (elmo-pop3-get-session spec)))
 577           loc-alist)
 578       (if elmo-pop3-use-uidl
 579           (setq loc-alist (if msgdb (elmo-msgdb-get-location msgdb)
 580                             (elmo-msgdb-location-load
 581                              (elmo-msgdb-expand-path spec)))))
 582       (with-current-buffer (process-buffer process)
 583         (elmo-pop3-sort-msgdb-by-original-number
 584          (elmo-pop3-msgdb-create-by-header process numlist
 585                                            new-mark already-mark
 586                                            seen-mark seen-list
 587                                            loc-alist))))))
 588
 589 (defun elmo-pop3-uidl-to-number (uidl)
 590   (string-to-number (elmo-get-hash-val uidl
 591                                        elmo-pop3-uidl-number-hash)))
 592
 593 (defun elmo-pop3-number-to-uidl (number)
 594   (elmo-get-hash-val (format "#%d" number)
 595                      elmo-pop3-number-uidl-hash))
 596
 597 (defun elmo-pop3-number-to-size (number)
 598   (elmo-get-hash-val (format "#%d" number)
 599                      elmo-pop3-size-hash))
 600
 601 (defun elmo-pop3-msgdb-create-by-header (process numlist
 602                                                  new-mark already-mark
 603                                                  seen-mark
 604                                                  seen-list
 605                                                  loc-alist)
 606   (let ((tmp-buffer (get-buffer-create " *ELMO Overview TMP*")))
 607     (with-current-buffer (process-buffer process)
 608       (if loc-alist ; use uidl.
 609           (setq numlist
 610                 (delq
 611                  nil
 612                  (mapcar
 613                   (lambda (number)
 614                     (elmo-pop3-uidl-to-number (cdr (assq number loc-alist))))
 615                   numlist))))
 616       (elmo-pop3-retrieve-headers (process-buffer process)
 617                                   tmp-buffer process numlist)
 618       (prog1
 619           (elmo-pop3-msgdb-create-message
 620            tmp-buffer
 621            process
 622            (length numlist)
 623            numlist
 624            new-mark already-mark seen-mark seen-list loc-alist)
 625         (kill-buffer tmp-buffer)))))
 626
 627 (defun elmo-pop3-msgdb-create-message (buffer
 628                                        process
 629                                        num
 630                                        numlist new-mark already-mark
 631                                        seen-mark
 632                                        seen-list
 633                                        loc-alist)
 634   (save-excursion
 635     (let (beg overview number-alist mark-alist
 636               entity i number message-id gmark seen size)
 637       (set-buffer buffer)
 638       (elmo-set-buffer-multibyte default-enable-multibyte-characters)
 639       (goto-char (point-min))
 640       (setq i 0)
 641       (message "Creating msgdb...")
 642       (while (not (eobp))
 643         (setq beg (save-excursion (forward-line 1) (point)))
 644         (elmo-pop3-next-result-arrived-p)
 645         (save-excursion
 646           (forward-line -1)
 647           (save-restriction
 648             (narrow-to-region beg (point))
 649             (setq entity
 650                   (elmo-msgdb-create-overview-from-buffer
 651                    (car numlist)))
 652             (setq numlist (cdr numlist))
 653             (when entity
 654               (setq overview
 655                     (elmo-msgdb-append-element
 656                      overview entity))
 657               (with-current-buffer (process-buffer process)
 658                 (elmo-msgdb-overview-entity-set-size
 659                  entity
 660                  (string-to-number
 661                   (elmo-pop3-number-to-size
 662                    (elmo-msgdb-overview-entity-get-number entity))))
 663                 (if (setq number
 664                           (car
 665                            (rassoc
 666                             (elmo-pop3-number-to-uidl
 667                              (elmo-msgdb-overview-entity-get-number entity))
 668                             loc-alist)))
 669                     (elmo-msgdb-overview-entity-set-number entity number)))
 670               (setq number-alist
 671                     (elmo-msgdb-number-add
 672                      number-alist
 673                      (elmo-msgdb-overview-entity-get-number entity)
 674                      (car entity)))
 675               (setq message-id (car entity))
 676               (setq seen (member message-id seen-list))
 677               (if (setq gmark (or (elmo-msgdb-global-mark-get message-id)
 678                                   (if (elmo-cache-exists-p
 679                                        message-id) ; XXX
 680                                       (if seen
 681                                           nil
 682                                         already-mark)
 683                                     (if seen
 684                                         (if elmo-pop3-use-cache
 685                                             seen-mark)
 686                                       new-mark))))
 687                   (setq mark-alist
 688                         (elmo-msgdb-mark-append
 689                          mark-alist
 690                          (elmo-msgdb-overview-entity-get-number entity)
 691                          gmark))))))
 692         (when (> num elmo-display-progress-threshold)
 693           (setq i (1+ i))
 694           (if (or (zerop (% i 5)) (= i num))
 695               (elmo-display-progress
 696                'elmo-pop3-msgdb-create-message "Creating msgdb..."
 697                (/ (* i 100) num)))))
 698       (list overview number-alist mark-alist loc-alist))))
 699
 700 (defun elmo-pop3-read-body (process outbuf)
 701   (with-current-buffer (process-buffer process)
 702     (let ((start elmo-pop3-read-point)
 703           end)
 704       (goto-char start)
 705       (while (not (re-search-forward "^\\.\r?\n" nil t))
 706         (accept-process-output process)
 707         (goto-char start))
 708       (setq end (point))
 709       (with-current-buffer outbuf
 710         (erase-buffer)
 711         (insert-buffer-substring (process-buffer process) start (- end 3))
 712         (elmo-delete-cr-get-content-type)))))
 713
 714 (defun elmo-pop3-read-msg (spec number outbuf &optional msgdb unread)
 715   (let* ((loc-alist (if elmo-pop3-use-uidl
 716                         (if msgdb
 717                             (elmo-msgdb-get-location msgdb)
 718                           (elmo-msgdb-location-load
 719                            (elmo-msgdb-expand-path spec)))))
 720          (process (elmo-network-session-process-internal
 721                    (elmo-pop3-get-session spec)))
 722          size response errmsg msg)
 723     (with-current-buffer (process-buffer process)
 724       (if loc-alist
 725           (setq number (elmo-pop3-uidl-to-number
 726                         (cdr (assq number loc-alist)))))
 727       (setq size (string-to-number
 728                   (elmo-pop3-number-to-size number)))
 729       (when number
 730         (elmo-pop3-send-command process
 731                                 (format "retr %s" number))
 732         (setq elmo-pop3-total-size size)
 733         (unless elmo-inhibit-display-retrieval-progress
 734           (setq elmo-pop3-total-size size)
 735           (elmo-display-progress
 736            'elmo-pop3-display-retrieval-progress
 737            (format "Retrieving (0/%d bytes)..." elmo-pop3-total-size)
 738            0))
 739         (unwind-protect
 740             (progn
 741               (when (null (setq response (elmo-pop3-read-response
 742                                           process t)))
 743                 (error "Fetching message failed"))
 744               (setq response (elmo-pop3-read-body process outbuf)))
 745           (setq elmo-pop3-total-size nil))
 746         (unless elmo-inhibit-display-retrieval-progress
 747           (elmo-display-progress
 748            'elmo-display-retrieval-progress "" 100)  ; remove progress bar.
 749           (message "Retrieving...done."))
 750         (set-buffer outbuf)
 751         (goto-char (point-min))
 752         (while (re-search-forward "^\\." nil t)
 753           (replace-match "")
 754           (forward-line))
 755         response))))
 756
 757 (defun elmo-pop3-delete-msg (process number loc-alist)
 758   (with-current-buffer (process-buffer process)
 759     (let (response errmsg msg)
 760       (if loc-alist
 761           (setq number (elmo-pop3-uidl-to-number
 762                         (cdr (assq number loc-alist)))))
 763       (if number
 764           (progn
 765             (elmo-pop3-send-command process
 766                                     (format "dele %s" number))
 767             (when (null (setq response (elmo-pop3-read-response
 768                                         process t)))
 769               (error "Deleting message failed")))
 770         (error "Deleting message failed")))))
 771
 772 (defun elmo-pop3-delete-msgs (spec msgs &optional msgdb)
 773   (let ((loc-alist (if elmo-pop3-use-uidl
 774                        (if msgdb
 775                            (elmo-msgdb-get-location msgdb)
 776                          (elmo-msgdb-location-load
 777                           (elmo-msgdb-expand-path spec)))))
 778         (process (elmo-network-session-process-internal
 779                   (elmo-pop3-get-session spec))))
 780     (mapcar '(lambda (msg) (elmo-pop3-delete-msg
 781                             process msg loc-alist))
 782             msgs)))
 783
 784 (defun elmo-pop3-search (spec condition &optional numlist)
 785   (error "Searching in pop3 folder is not implemented yet"))
 786
 787 (defun elmo-pop3-use-cache-p (spec number)
 788   elmo-pop3-use-cache)
 789
 790 (defun elmo-pop3-local-file-p (spec number)
 791   nil)
 792
 793 (defun elmo-pop3-port-label (spec)
 794   (concat "pop3"
 795           (if (elmo-pop3-spec-stream-type spec)
 796               (concat "!" (symbol-name
 797                            (elmo-network-stream-type-symbol
 798                             (elmo-pop3-spec-stream-type spec)))))))
 799
 800 (defsubst elmo-pop3-portinfo (spec)
 801   (list (elmo-pop3-spec-hostname spec)
 802         (elmo-pop3-spec-port spec)))
 803
 804 (defun elmo-pop3-plugged-p (spec)
 805   (apply 'elmo-plugged-p
 806          (append (elmo-pop3-portinfo spec)
 807                  (list nil (quote (elmo-pop3-port-label spec))))))
 808
 809 (defun elmo-pop3-set-plugged (spec plugged add)
 810   (apply 'elmo-set-plugged plugged
 811          (append (elmo-pop3-portinfo spec)
 812                  (list nil nil (quote (elmo-pop3-port-label spec)) add))))
 813
 814 (defalias 'elmo-pop3-sync-number-alist
 815   'elmo-generic-sync-number-alist)
 816 (defalias 'elmo-pop3-list-folder-unread
 817   'elmo-generic-list-folder-unread)
 818 (defalias 'elmo-pop3-list-folder-important
 819   'elmo-generic-list-folder-important)
 820 (defalias 'elmo-pop3-folder-diff 'elmo-generic-folder-diff)
 821
 822 (defun elmo-pop3-commit (spec)
 823   (if (elmo-pop3-plugged-p spec)
 824       (let ((session (elmo-pop3-get-session spec 'if-exists)))
 825         (when (and session
 826                    (not (elmo-pop3-locked-p
 827                          (elmo-network-session-process-internal session))))
 828           (elmo-network-close-session session)))))
 829
 830
 831 (require 'product)
 832 (product-provide (provide 'elmo-pop3) (require 'elmo-version))
 833
 834 ;;; elmo-pop3.el ends here