elmo/elmo-nntp.el

   1 ;;; elmo-nntp.el --- NNTP Interface for ELMO.
   2
   3 ;; Copyright (C) 1998,1999,2000 Yuuichi Teranishi <teranisi@gohome.org>
   4 ;; Copyright (C) 1998,1999,2000 Masahiro MURATA <muse@ba2.so-net.ne.jp>
   5 ;; Copyright (C) 1999,2000      Kenichi OKADA <okada@opaopa.org>
   6
   7 ;; Author: Yuuichi Teranishi <teranisi@gohome.org>
   8 ;;      Masahiro MURATA <muse@ba2.so-net.ne.jp>
   9 ;;      Kenichi OKADA <okada@opaopa.org>
  10 ;; Keywords: mail, net news
  11
  12 ;; This file is part of ELMO (Elisp Library for Message Orchestration).
  13
  14 ;; This program is free software; you can redistribute it and/or modify
  15 ;; it under the terms of the GNU General Public License as published by
  16 ;; the Free Software Foundation; either version 2, or (at your option)
  17 ;; any later version.
  18 ;;
  19 ;; This program is distributed in the hope that it will be useful,
  20 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  21 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  22 ;; GNU General Public License for more details.
  23 ;;
  24 ;; You should have received a copy of the GNU General Public License
  25 ;; along with GNU Emacs; see the file COPYING.  If not, write to the
  26 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  27 ;; Boston, MA 02111-1307, USA.
  28 ;;
  29
  30 ;;; Commentary:
  31 ;;
  32
  33 ;;; Code:
  34 ;;
  35
  36 (require 'elmo-vars)
  37 (require 'elmo-util)
  38 (require 'elmo-date)
  39 (require 'elmo-msgdb)
  40 (require 'elmo-cache)
  41 (require 'elmo)
  42 (require 'elmo-net)
  43
  44 (defvar elmo-nntp-overview-fetch-chop-length 200
  45  "*Number of overviews to fetch in one request in nntp.")
  46
  47 (defvar elmo-nntp-use-cache t
  48   "Use cache in nntp folder.")
  49
  50 (defvar elmo-nntp-max-number-precedes-list-active nil
  51   "Non-nil means max number of msgdb is set as the max number of `list active'.
  52 (Needed for inn 2.3 or later?).")
  53
  54 (defvar elmo-nntp-group-coding-system nil
  55   "A coding system for newsgroup string.")
  56
  57 (defsubst elmo-nntp-encode-group-string (string)
  58   (if elmo-nntp-group-coding-system
  59       (encode-coding-string string elmo-nntp-group-coding-system)
  60     string))
  61
  62 (defsubst elmo-nntp-decode-group-string (string)
  63   (if elmo-nntp-group-coding-system
  64       (decode-coding-string string elmo-nntp-group-coding-system)
  65     string))
  66
  67 ;;; ELMO NNTP folder
  68 (eval-and-compile
  69   (luna-define-class elmo-nntp-folder (elmo-net-folder)
  70                      (group temp-crosses reads))
  71   (luna-define-internal-accessors 'elmo-nntp-folder))
  72
  73 (luna-define-method elmo-folder-initialize :around ((folder
  74                                                      elmo-nntp-folder)
  75                                                     name)
  76   (let ((elmo-network-stream-type-alist
  77          (if elmo-nntp-stream-type-alist
  78              (setq elmo-network-stream-type-alist
  79                    (append elmo-nntp-stream-type-alist
  80                            elmo-network-stream-type-alist))
  81            elmo-network-stream-type-alist))
  82         parse)
  83     (setq name (luna-call-next-method))
  84     (setq parse (elmo-parse-token name ":"))
  85     (elmo-nntp-folder-set-group-internal folder
  86                                          (elmo-nntp-encode-group-string
  87                                           (car parse)))
  88     (setq parse (elmo-parse-prefixed-element ?: (cdr parse)))
  89     (elmo-net-folder-set-user-internal folder
  90                                        (if (eq (length (car parse)) 0)
  91                                            elmo-nntp-default-user
  92                                          (car parse)))
  93     (unless (elmo-net-folder-server-internal folder)
  94       (elmo-net-folder-set-server-internal folder
  95                                            elmo-nntp-default-server))
  96     (unless (elmo-net-folder-port-internal folder)
  97       (elmo-net-folder-set-port-internal folder
  98                                          elmo-nntp-default-port))
  99     (unless (elmo-net-folder-stream-type-internal folder)
 100       (elmo-net-folder-set-stream-type-internal
 101        folder
 102        (elmo-get-network-stream-type
 103         elmo-nntp-default-stream-type)))
 104     folder))
 105
 106 (luna-define-method elmo-folder-expand-msgdb-path ((folder elmo-nntp-folder))
 107   (convert-standard-filename
 108    (expand-file-name
 109     (elmo-nntp-folder-group-internal folder)
 110     (expand-file-name (or (elmo-net-folder-server-internal folder) "nowhere")
 111                       (expand-file-name "nntp"
 112                                         elmo-msgdb-directory)))))
 113
 114 (luna-define-method elmo-folder-newsgroups ((folder elmo-nntp-folder))
 115   (list (elmo-nntp-folder-group-internal folder)))
 116
 117 ;;; NNTP Session
 118 (eval-and-compile
 119   (luna-define-class elmo-nntp-session (elmo-network-session)
 120                      (current-group))
 121   (luna-define-internal-accessors 'elmo-nntp-session))
 122
 123 ;;
 124 ;; internal variables
 125 ;;
 126
 127 (defvar elmo-nntp-connection-cache nil
 128   "Cache of NNTP connection.")
 129 ;; buffer local variable
 130
 131 (defvar elmo-nntp-list-folders-use-cache 600
 132   "*Time to cache of list folders, as the number of seconds.
 133 Don't cache if nil.")
 134
 135 (defvar elmo-nntp-list-folders-cache nil)
 136
 137 (defvar elmo-nntp-groups-async nil)
 138 (defvar elmo-nntp-header-fetch-chop-length 200)
 139
 140 (defvar elmo-nntp-read-point 0)
 141
 142 (defvar elmo-nntp-send-mode-reader t)
 143
 144 (defvar elmo-nntp-opened-hook nil)
 145
 146 (defvar elmo-nntp-get-folders-securely nil)
 147
 148 (defvar elmo-nntp-default-use-xover t)
 149
 150 (defvar elmo-nntp-default-use-listgroup t)
 151
 152 (defvar elmo-nntp-default-use-list-active t)
 153
 154 (defvar elmo-nntp-default-use-xhdr t)
 155
 156 (defvar elmo-nntp-server-command-alist nil)
 157
 158
 159 (defconst elmo-nntp-server-command-index '((xover . 0)
 160                                            (listgroup . 1)
 161                                            (list-active . 2)))
 162
 163 (defmacro elmo-nntp-get-server-command (session)
 164   (` (assoc (cons (elmo-network-session-server-internal (, session))
 165                   (elmo-network-session-port-internal (, session)))
 166             elmo-nntp-server-command-alist)))
 167
 168 (defmacro elmo-nntp-set-server-command (session com value)
 169   (` (let (entry)
 170        (unless (setq entry (cdr (elmo-nntp-get-server-command
 171                                  (, session))))
 172          (setq elmo-nntp-server-command-alist
 173                (nconc elmo-nntp-server-command-alist
 174                       (list (cons
 175                              (cons
 176                               (elmo-network-session-server-internal (, session))
 177                               (elmo-network-session-port-internal (, session)))
 178                              (setq entry
 179                                    (vector
 180                                     elmo-nntp-default-use-xover
 181                                     elmo-nntp-default-use-listgroup
 182                                     elmo-nntp-default-use-list-active
 183                                     elmo-nntp-default-use-xhdr)))))))
 184        (aset entry
 185              (cdr (assq (, com) elmo-nntp-server-command-index))
 186              (, value)))))
 187
 188 (defmacro elmo-nntp-xover-p (session)
 189   (` (let ((entry (elmo-nntp-get-server-command (, session))))
 190        (if entry
 191            (aref (cdr entry)
 192                  (cdr (assq 'xover elmo-nntp-server-command-index)))
 193          elmo-nntp-default-use-xover))))
 194
 195 (defmacro elmo-nntp-set-xover (session value)
 196   (` (elmo-nntp-set-server-command (, session) 'xover (, value))))
 197
 198 (defmacro elmo-nntp-listgroup-p (session)
 199   (` (let ((entry (elmo-nntp-get-server-command (, session))))
 200        (if entry
 201            (aref (cdr entry)
 202                  (cdr (assq 'listgroup elmo-nntp-server-command-index)))
 203          elmo-nntp-default-use-listgroup))))
 204
 205 (defmacro elmo-nntp-set-listgroup (session value)
 206   (` (elmo-nntp-set-server-command (, session) 'listgroup (, value))))
 207
 208 (defmacro elmo-nntp-list-active-p (session)
 209   (` (let ((entry (elmo-nntp-get-server-command (, session))))
 210        (if entry
 211            (aref (cdr entry)
 212                  (cdr (assq 'list-active elmo-nntp-server-command-index)))
 213          elmo-nntp-default-use-list-active))))
 214
 215 (defmacro elmo-nntp-set-list-active (session value)
 216   (` (elmo-nntp-set-server-command (, session) 'list-active (, value))))
 217
 218 (defmacro elmo-nntp-xhdr-p (session)
 219   (` (let ((entry (elmo-nntp-get-server-command (, session))))
 220        (if entry
 221            (aref (cdr entry)
 222                  (cdr (assq 'xhdr elmo-nntp-server-command-index)))
 223          elmo-nntp-default-use-xhdr))))
 224
 225 (defmacro elmo-nntp-set-xhdr (session value)
 226   (` (elmo-nntp-set-server-command (, session) 'xhdr (, value))))
 227
 228 (defsubst elmo-nntp-max-number-precedes-list-active-p ()
 229   elmo-nntp-max-number-precedes-list-active)
 230
 231 (defsubst elmo-nntp-folder-postfix (user server port type)
 232   (concat
 233    (and user (concat ":" user))
 234    (if (and server
 235             (null (string= server elmo-nntp-default-server)))
 236        (concat "@" server))
 237    (if (and port
 238             (null (eq port elmo-nntp-default-port)))
 239        (concat ":" (if (numberp port)
 240                        (int-to-string port) port)))
 241    (unless (eq (elmo-network-stream-type-symbol type)
 242                elmo-nntp-default-stream-type)
 243      (elmo-network-stream-type-spec-string type))))
 244
 245 (defun elmo-nntp-get-session (folder &optional if-exists)
 246   (elmo-network-get-session
 247    'elmo-nntp-session
 248    (concat
 249     (if (elmo-folder-biff-internal folder)
 250         "BIFF-")
 251     "NNTP")
 252    folder
 253    if-exists))
 254
 255 (luna-define-method elmo-network-initialize-session ((session
 256                                                       elmo-nntp-session))
 257   (let ((process (elmo-network-session-process-internal session))
 258         response)
 259     (set-process-filter (elmo-network-session-process-internal session)
 260                         'elmo-nntp-process-filter)
 261     (with-current-buffer (elmo-network-session-buffer session)
 262       (setq elmo-nntp-read-point (point-min))
 263       ;; Skip garbage output from process before greeting.
 264       (while (and (memq (process-status process) '(open run))
 265                   (goto-char (point-max))
 266                   (forward-line -1)
 267                   (not (looking-at "^[2-5][0-9][0-9]")))
 268         (accept-process-output process 1))
 269       (setq elmo-nntp-read-point (point))
 270       (setq response (elmo-nntp-read-response session t t))
 271       (unless (car response)
 272           (signal 'elmo-open-error (list (cdr response))))
 273       (if elmo-nntp-send-mode-reader
 274           (elmo-nntp-send-mode-reader session))
 275       (when (eq (elmo-network-stream-type-symbol
 276                  (elmo-network-session-stream-type-internal session))
 277                 'starttls)
 278         (elmo-nntp-send-command session "starttls")
 279         (or (elmo-nntp-read-response session)
 280             (error "Cannot open starttls session"))
 281         (starttls-negotiate process)))))
 282
 283 (luna-define-method elmo-network-authenticate-session ((session
 284                                                         elmo-nntp-session))
 285   (with-current-buffer (elmo-network-session-buffer session)
 286     (when (elmo-network-session-user-internal session)
 287       (elmo-nntp-send-command session
 288                               (format "authinfo user %s"
 289                                       (elmo-network-session-user-internal
 290                                        session)))
 291       (or (elmo-nntp-read-response session)
 292           (signal 'elmo-authenticate-error '(authinfo)))
 293       (elmo-nntp-send-command
 294        session
 295        (format "authinfo pass %s"
 296                (elmo-get-passwd (elmo-network-session-password-key session))))
 297       (or (elmo-nntp-read-response session)
 298           (signal 'elmo-authenticate-error '(authinfo))))))
 299
 300 (luna-define-method elmo-network-setup-session ((session
 301                                                  elmo-nntp-session))
 302   (run-hooks 'elmo-nntp-opened-hook))
 303
 304 (defun elmo-nntp-process-filter (process output)
 305   (save-excursion
 306     (set-buffer (process-buffer process))
 307     (goto-char (point-max))
 308     (insert output)))
 309
 310 (defun elmo-nntp-send-mode-reader (session)
 311   (elmo-nntp-send-command session "mode reader")
 312   (if (null (elmo-nntp-read-response session t))
 313       (message "Mode reader failed")))
 314
 315 (defun elmo-nntp-send-command (session command &optional noerase)
 316   (with-current-buffer (elmo-network-session-buffer session)
 317     (unless noerase
 318       (erase-buffer)
 319       (goto-char (point-min)))
 320     (setq elmo-nntp-read-point (point))
 321     (process-send-string (elmo-network-session-process-internal
 322                           session) command)
 323     (process-send-string (elmo-network-session-process-internal
 324                           session) "\r\n")))
 325
 326 (defun elmo-nntp-read-response (session &optional not-command error-msg)
 327   (with-current-buffer (elmo-network-session-buffer session)
 328     (let ((process (elmo-network-session-process-internal session))
 329           (case-fold-search nil)
 330           (response-string nil)
 331           (response-continue t)
 332           response match-end)
 333       (while response-continue
 334         (goto-char elmo-nntp-read-point)
 335         (while (not (search-forward "\r\n" nil t))
 336           (accept-process-output process)
 337           (goto-char elmo-nntp-read-point))
 338         (setq match-end (point))
 339         (setq response-string
 340               (buffer-substring elmo-nntp-read-point (- match-end 2)))
 341         (goto-char elmo-nntp-read-point)
 342         (if (looking-at "[23][0-9]+ .*$")
 343             (progn (setq response-continue nil)
 344                    (setq elmo-nntp-read-point match-end)
 345                    (setq response
 346                          (if response
 347                              (concat response "\n" response-string)
 348                            response-string)))
 349           (if (looking-at "[^23][0-9]+ .*$")
 350               (progn (setq response-continue nil)
 351                      (setq elmo-nntp-read-point match-end)
 352                      (setq response nil))
 353             (setq elmo-nntp-read-point match-end)
 354             (if not-command
 355                 (setq response-continue nil))
 356             (setq response
 357                   (if response
 358                       (concat response "\n" response-string)
 359                     response-string)))
 360           (setq elmo-nntp-read-point match-end)))
 361       (if error-msg
 362           (cons response response-string)
 363         response))))
 364
 365 (defun elmo-nntp-read-raw-response (session)
 366   (with-current-buffer (elmo-network-session-buffer session)
 367     (goto-char elmo-nntp-read-point)
 368     (while (not (search-forward "\r\n" nil t))
 369       (accept-process-output (elmo-network-session-process-internal
 370                               session))
 371       (goto-char elmo-nntp-read-point))
 372     (buffer-substring elmo-nntp-read-point (- (point) 2))))
 373
 374 (defun elmo-nntp-read-contents (session)
 375   (with-current-buffer (elmo-network-session-buffer session)
 376     (goto-char elmo-nntp-read-point)
 377     (while (not (re-search-forward "^\\.\r\n" nil t))
 378       (accept-process-output (elmo-network-session-process-internal
 379                               session))
 380       (goto-char elmo-nntp-read-point))
 381     (elmo-delete-cr
 382      (buffer-substring elmo-nntp-read-point
 383                        (- (point) 3)))))
 384
 385 (defun elmo-nntp-read-body (session outbuf)
 386   (with-current-buffer (elmo-network-session-buffer session)
 387     (goto-char elmo-nntp-read-point)
 388     (while (not (re-search-forward "^\\.\r\n" nil t))
 389       (accept-process-output (elmo-network-session-process-internal session))
 390       (goto-char elmo-nntp-read-point))
 391     (let ((start elmo-nntp-read-point)
 392           (end  (point)))
 393       (with-current-buffer outbuf
 394         (erase-buffer)
 395         (insert-buffer-substring (elmo-network-session-buffer session)
 396                                  start (- end 3))))
 397     t))
 398
 399 (defun elmo-nntp-select-group (session group &optional force)
 400   (let (response)
 401     (when (or force
 402               (not (string= (elmo-nntp-session-current-group-internal session)
 403                             group)))
 404       (unwind-protect
 405           (progn
 406             (elmo-nntp-send-command session (format "group %s" group))
 407             (setq response (elmo-nntp-read-response session)))
 408         (elmo-nntp-session-set-current-group-internal session
 409                                                       (and response group))
 410         response))))
 411
 412 (defun elmo-nntp-list-folders-get-cache (group server buf)
 413   (when (and elmo-nntp-list-folders-use-cache
 414              elmo-nntp-list-folders-cache
 415              (string-match (concat "^"
 416                                    (regexp-quote
 417                                     (or
 418                                      (nth 1 elmo-nntp-list-folders-cache)
 419                                      "")))
 420                            (or group ""))
 421              (string-match (concat "^"
 422                                    (regexp-quote
 423                                     (or
 424                                      (nth 2 elmo-nntp-list-folders-cache)
 425                                      "")))
 426                            (or server "")))
 427     (let* ((cache-time (car elmo-nntp-list-folders-cache)))
 428       (unless (elmo-time-expire cache-time
 429                                 elmo-nntp-list-folders-use-cache)
 430         (save-excursion
 431           (set-buffer buf)
 432           (erase-buffer)
 433           (insert (nth 3 elmo-nntp-list-folders-cache))
 434           (goto-char (point-min))
 435           (or (string= group "")
 436               (and group
 437                    (keep-lines (concat "^" (regexp-quote group) "\\."))))
 438           t
 439           )))))
 440
 441 (defsubst elmo-nntp-catchup-msgdb (msgdb max-number)
 442   (let (msgdb-max number-alist)
 443     (setq number-alist (elmo-msgdb-get-number-alist msgdb))
 444     (setq msgdb-max (car (nth (max (- (length number-alist) 1) 0)
 445                               number-alist)))
 446     (if (or (not msgdb-max)
 447             (and msgdb-max max-number
 448                  (< msgdb-max max-number)))
 449         (elmo-msgdb-set-number-alist
 450          msgdb
 451          (nconc number-alist (list (cons max-number nil)))))))
 452
 453 (luna-define-method elmo-folder-list-subfolders ((folder elmo-nntp-folder)
 454                                                  &optional one-level)
 455   (elmo-nntp-folder-list-subfolders folder one-level))
 456
 457 (defun elmo-nntp-folder-list-subfolders (folder one-level)
 458   (let ((session (elmo-nntp-get-session folder))
 459         (case-fold-search nil)
 460         response ret-val top-ng append-serv use-list-active start)
 461     (with-temp-buffer
 462       (set-buffer-multibyte nil)
 463       (if (and (elmo-nntp-folder-group-internal folder)
 464                (elmo-nntp-select-group
 465                 session
 466                 (elmo-nntp-folder-group-internal folder)))
 467           ;; add top newsgroups
 468           (setq ret-val (list (elmo-nntp-folder-group-internal folder))))
 469       (unless (setq response (elmo-nntp-list-folders-get-cache
 470                               (elmo-nntp-folder-group-internal folder)
 471                               (elmo-net-folder-server-internal folder)
 472                               (current-buffer)))
 473         (when (setq use-list-active (elmo-nntp-list-active-p session))
 474           (elmo-nntp-send-command
 475            session
 476            (concat "list"
 477                    (if (and (elmo-nntp-folder-group-internal folder)
 478                             (not (string= (elmo-nntp-folder-group-internal
 479                                            folder) "")))
 480                        (concat " active"
 481                                (format " %s.*"
 482                                        (elmo-nntp-folder-group-internal folder)
 483                                        "")))))
 484           (if (elmo-nntp-read-response session t)
 485               (if (null (setq response (elmo-nntp-read-contents session)))
 486                   (error "NNTP List folders failed")
 487                 (when elmo-nntp-list-folders-use-cache
 488                   (setq elmo-nntp-list-folders-cache
 489                         (list (current-time)
 490                               (elmo-nntp-folder-group-internal folder)
 491                               (elmo-net-folder-server-internal folder)
 492                               response)))
 493                 (erase-buffer)
 494                 (insert response))
 495             (elmo-nntp-set-list-active session nil)
 496             (setq use-list-active nil)))
 497         (when (null use-list-active)
 498           (elmo-nntp-send-command session "list")
 499           (if (null (and (elmo-nntp-read-response session t)
 500                          (setq response (elmo-nntp-read-contents session))))
 501               (error "NNTP List folders failed"))
 502           (when elmo-nntp-list-folders-use-cache
 503             (setq elmo-nntp-list-folders-cache
 504                   (list (current-time) nil nil response)))
 505           (erase-buffer)
 506           (setq start nil)
 507           (while (string-match (concat "^"
 508                                        (regexp-quote
 509                                         (or
 510                                          (elmo-nntp-folder-group-internal
 511                                           folder)
 512                                          "")) ".*$")
 513                                response start)
 514             (insert (match-string 0 response) "\n")
 515             (setq start (match-end 0)))))
 516       (goto-char (point-min))
 517       (let ((len (count-lines (point-min) (point-max)))
 518             (i 0) regexp)
 519         (if one-level
 520             (progn
 521               (setq regexp
 522                     (format "^\\(%s[^. ]+\\)\\([. ]\\).*\n"
 523                             (if (and
 524                                  (elmo-nntp-folder-group-internal folder)
 525                                  (null (string=
 526                                         (elmo-nntp-folder-group-internal
 527                                          folder) "")))
 528                                 (concat (elmo-nntp-folder-group-internal
 529                                          folder)
 530                                         "\\.") "")))
 531               (while (looking-at regexp)
 532                 (setq top-ng (elmo-match-buffer 1))
 533                 (if (string= (elmo-match-buffer 2) " ")
 534                     (if (not (or (member top-ng ret-val)
 535                                  (assoc top-ng ret-val)))
 536                         (setq ret-val (nconc ret-val (list top-ng))))
 537                   (if (member top-ng ret-val)
 538                       (setq ret-val (delete top-ng ret-val)))
 539                   (if (not (assoc top-ng ret-val))
 540                       (setq ret-val (nconc ret-val (list (list top-ng))))))
 541                 (when (> len elmo-display-progress-threshold)
 542                   (setq i (1+ i))
 543                   (if (or (zerop (% i 10)) (= i len))
 544                       (elmo-display-progress
 545                        'elmo-nntp-list-folders "Parsing active..."
 546                        (/ (* i 100) len))))
 547                 (forward-line 1)))
 548           (while (re-search-forward "\\([^ ]+\\) .*\n" nil t)
 549             (setq ret-val (nconc ret-val
 550                                  (list (elmo-match-buffer 1))))
 551             (when (> len elmo-display-progress-threshold)
 552               (setq i (1+ i))
 553               (if (or (zerop (% i 10)) (= i len))
 554                   (elmo-display-progress
 555                    'elmo-nntp-list-folders "Parsing active..."
 556                    (/ (* i 100) len))))))
 557         (when (> len elmo-display-progress-threshold)
 558           (elmo-display-progress
 559            'elmo-nntp-list-folders "Parsing active..." 100))))
 560     (unless (string= (elmo-net-folder-server-internal folder)
 561                      elmo-nntp-default-server)
 562       (setq append-serv (concat "@" (elmo-net-folder-server-internal
 563                                      folder))))
 564     (unless (eq (elmo-net-folder-port-internal folder) elmo-nntp-default-port)
 565       (setq append-serv (concat append-serv
 566                                 ":" (int-to-string
 567                                      (elmo-net-folder-port-internal folder)))))
 568     (unless (eq (elmo-network-stream-type-symbol
 569                  (elmo-net-folder-stream-type-internal folder))
 570                 elmo-nntp-default-stream-type)
 571       (setq append-serv
 572             (concat append-serv
 573                     (elmo-network-stream-type-spec-string
 574                      (elmo-net-folder-stream-type-internal folder)))))
 575     (mapcar '(lambda (fld)
 576                (if (consp fld)
 577                    (list (concat "-" (elmo-nntp-decode-group-string (car fld))
 578                                  (and (elmo-net-folder-user-internal folder)
 579                                       (concat
 580                                        ":"
 581                                        (elmo-net-folder-user-internal folder)))
 582                                  (and append-serv
 583                                       (concat append-serv))))
 584                  (concat "-" (elmo-nntp-decode-group-string fld)
 585                          (and (elmo-net-folder-user-internal folder)
 586                               (concat ":" (elmo-net-folder-user-internal
 587                                            folder)))
 588                          (and append-serv
 589                               (concat append-serv)))))
 590             ret-val)))
 591
 592 (defun elmo-nntp-make-msglist (beg-str end-str)
 593   (elmo-set-work-buf
 594    (let ((beg-num (string-to-int beg-str))
 595          (end-num (string-to-int end-str))
 596          i)
 597      (setq i beg-num)
 598      (insert "(")
 599      (while (<= i end-num)
 600        (insert (format "%s " i))
 601        (setq i (1+ i)))
 602      (insert ")")
 603      (goto-char (point-min))
 604      (read (current-buffer)))))
 605
 606 (luna-define-method elmo-folder-list-messages-plugged ((folder
 607                                                         elmo-nntp-folder)
 608                                                        &optional nohide)
 609   (let ((session (elmo-nntp-get-session folder))
 610         (group   (elmo-nntp-folder-group-internal folder))
 611         response numbers use-listgroup)
 612     (save-excursion
 613       (when (setq use-listgroup (elmo-nntp-listgroup-p session))
 614         (elmo-nntp-send-command session
 615                                 (format "listgroup %s" group))
 616         (if (not (elmo-nntp-read-response session t))
 617             (progn
 618               (elmo-nntp-set-listgroup session nil)
 619               (setq use-listgroup nil))
 620           (if (null (setq response (elmo-nntp-read-contents session)))
 621               (error "Fetching listgroup failed"))
 622           (setq numbers (elmo-string-to-list response))
 623           (elmo-nntp-session-set-current-group-internal session
 624                                                         group)))
 625       (unless use-listgroup
 626         (elmo-nntp-send-command session (format "group %s" group))
 627         (if (null (setq response (elmo-nntp-read-response session)))
 628             (error "Select group failed"))
 629         (when (and
 630                (string-match
 631                 "211 \\([0-9]+\\) \\([0-9]+\\) \\([0-9]+\\) [^.].+$"
 632                 response)
 633                (> (string-to-int (elmo-match-string 1 response)) 0))
 634           (setq numbers (elmo-nntp-make-msglist
 635                          (elmo-match-string 2 response)
 636                          (elmo-match-string 3 response)))))
 637       numbers)))
 638
 639 (luna-define-method elmo-folder-status ((folder elmo-nntp-folder))
 640   (elmo-nntp-folder-status folder))
 641
 642 (defun elmo-nntp-folder-status (folder)
 643   (let ((killed-list (elmo-msgdb-killed-list-load
 644                       (elmo-folder-msgdb-path folder)))
 645         end-num entry)
 646     (if elmo-nntp-groups-async
 647         (if (setq entry
 648                   (elmo-get-hash-val
 649                    (concat (elmo-nntp-folder-group-internal folder)
 650                            (elmo-nntp-folder-postfix
 651                             (elmo-net-folder-user-internal folder)
 652                             (elmo-net-folder-server-internal folder)
 653                             (elmo-net-folder-port-internal folder)
 654                             (elmo-net-folder-stream-type-internal folder)))
 655                    elmo-newsgroups-hashtb))
 656             (progn
 657               (setq end-num (nth 2 entry))
 658               (when (and killed-list
 659                          (elmo-number-set-member end-num killed-list))
 660                 ;; Max is killed.
 661                 (setq end-num nil))
 662               (cons end-num (car entry)))
 663           (error "No such newsgroup \"%s\""
 664                  (elmo-nntp-folder-group-internal folder)))
 665       (let ((session (elmo-nntp-get-session folder))
 666             response e-num)
 667         (if (null session)
 668             (error "Connection failed"))
 669         (save-excursion
 670           (elmo-nntp-send-command session
 671                                   (format
 672                                    "group %s"
 673                                    (elmo-nntp-folder-group-internal folder)))
 674           (setq response (elmo-nntp-read-response session))
 675           (if (and response
 676                    (string-match
 677                     "211 \\([0-9]+\\) \\([0-9]+\\) \\([0-9]+\\) [^.].+$"
 678                     response))
 679               (progn
 680                 (setq end-num (string-to-int
 681                                (elmo-match-string 3 response)))
 682                 (setq e-num (string-to-int
 683                              (elmo-match-string 1 response)))
 684                 (when (and killed-list
 685                            (elmo-number-set-member end-num killed-list))
 686                   ;; Max is killed.
 687                   (setq end-num nil))
 688                 (cons end-num e-num))
 689             (if (null response)
 690                 (error "Selecting newsgroup \"%s\" failed"
 691                        (elmo-nntp-folder-group-internal folder))
 692               nil)))))))
 693
 694 (defconst elmo-nntp-overview-index
 695   '(("number" . 0)
 696     ("subject" . 1)
 697     ("from" . 2)
 698     ("date" . 3)
 699     ("message-id" . 4)
 700     ("references" . 5)
 701     ("size" . 6)
 702     ("lines" . 7)
 703     ("xref" . 8)))
 704
 705 (defun elmo-nntp-create-msgdb-from-overview-string (str
 706                                                     new-mark
 707                                                     already-mark
 708                                                     seen-mark
 709                                                     important-mark
 710                                                     seen-list
 711                                                     &optional numlist)
 712   (let (ov-list gmark message-id seen
 713         ov-entity overview number-alist mark-alist num
 714         extras extra ext field field-index)
 715     (setq ov-list (elmo-nntp-parse-overview-string str))
 716     (while ov-list
 717       (setq ov-entity (car ov-list))
 718 ;;; INN bug??
 719 ;;;   (if (or (> (setq num (string-to-int (aref ov-entity 0)))
 720 ;;;              99999)
 721 ;;;           (<= num 0))
 722 ;;;       (setq num 0))
 723 ;;;  (setq num (int-to-string num))
 724       (setq num (string-to-int (aref ov-entity 0)))
 725       (when (or (null numlist)
 726                 (memq num numlist))
 727         (setq extras elmo-msgdb-extra-fields
 728               extra nil)
 729         (while extras
 730           (setq ext (downcase (car extras)))
 731           (when (setq field-index (cdr (assoc ext elmo-nntp-overview-index)))
 732             (when (> (length ov-entity) field-index)
 733               (setq field (aref ov-entity field-index))
 734               (when (eq field-index 8) ;; xref
 735                 (setq field (elmo-msgdb-remove-field-string field)))
 736               (setq extra (cons (cons ext field) extra))))
 737           (setq extras (cdr extras)))
 738         (setq overview
 739               (elmo-msgdb-append-element
 740                overview
 741                (cons (aref ov-entity 4)
 742                      (vector num
 743                              (elmo-msgdb-get-last-message-id
 744                               (aref ov-entity 5))
 745                              ;; from
 746                              (elmo-mime-string (elmo-delete-char
 747                                                 ?\"
 748                                                 (or
 749                                                  (aref ov-entity 2)
 750                                                  elmo-no-from) 'uni))
 751                              ;; subject
 752                              (elmo-mime-string (or (aref ov-entity 1)
 753                                                    elmo-no-subject))
 754                              (aref ov-entity 3) ;date
 755                              nil ; to
 756                              nil ; cc
 757                              (string-to-int
 758                               (aref ov-entity 6)) ; size
 759                              extra ; extra-field-list
 760                              ))))
 761         (setq number-alist
 762               (elmo-msgdb-number-add number-alist num
 763                                      (aref ov-entity 4)))
 764         (setq message-id (aref ov-entity 4))
 765         (setq seen (member message-id seen-list))
 766         (if (setq gmark (or (elmo-msgdb-global-mark-get message-id)
 767                             (if (elmo-file-cache-status
 768                                  (elmo-file-cache-get message-id))
 769                                 (if seen
 770                                     nil
 771                                   already-mark)
 772                               (if seen
 773                                   (if elmo-nntp-use-cache
 774                                       seen-mark)
 775                                 new-mark))))
 776             (setq mark-alist
 777                   (elmo-msgdb-mark-append mark-alist
 778                                           num gmark))))
 779       (setq ov-list (cdr ov-list)))
 780     (list overview number-alist mark-alist)))
 781
 782 (luna-define-method elmo-folder-msgdb-create ((folder elmo-nntp-folder)
 783                                               numbers new-mark already-mark
 784                                               seen-mark important-mark
 785                                               seen-list)
 786   (elmo-nntp-folder-msgdb-create folder numbers new-mark already-mark
 787                                  seen-mark important-mark
 788                                  seen-list))
 789
 790 (defun elmo-nntp-folder-msgdb-create (folder numbers new-mark already-mark
 791                                              seen-mark important-mark
 792                                              seen-list)
 793   (let ((filter numbers)
 794         (session (elmo-nntp-get-session folder))
 795         beg-num end-num cur length
 796         ret-val ov-str use-xover dir)
 797     (elmo-nntp-select-group session (elmo-nntp-folder-group-internal
 798                                      folder))
 799     (when (setq use-xover (elmo-nntp-xover-p session))
 800       (setq beg-num (car numbers)
 801             cur beg-num
 802             end-num (nth (1- (length numbers)) numbers)
 803             length  (+ (- end-num beg-num) 1))
 804       (message "Getting overview...")
 805       (while (<= cur end-num)
 806         (elmo-nntp-send-command
 807          session
 808          (format
 809           "xover %s-%s"
 810           (int-to-string cur)
 811           (int-to-string
 812            (+ cur
 813               elmo-nntp-overview-fetch-chop-length))))
 814         (with-current-buffer (elmo-network-session-buffer session)
 815           (if ov-str
 816               (setq ret-val
 817                     (elmo-msgdb-append
 818                      ret-val
 819                      (elmo-nntp-create-msgdb-from-overview-string
 820                       ov-str
 821                       new-mark
 822                       already-mark
 823                       seen-mark
 824                       important-mark
 825                       seen-list
 826                       filter
 827                       )))))
 828         (if (null (elmo-nntp-read-response session t))
 829             (progn
 830               (setq cur end-num);; exit while loop
 831               (elmo-nntp-set-xover session nil)
 832               (setq use-xover nil))
 833           (if (null (setq ov-str (elmo-nntp-read-contents session)))
 834               (error "Fetching overview failed")))
 835         (setq cur (+ elmo-nntp-overview-fetch-chop-length cur 1))
 836         (when (> length elmo-display-progress-threshold)
 837           (elmo-display-progress
 838            'elmo-nntp-msgdb-create "Getting overview..."
 839            (/ (* (+ (- (min cur end-num)
 840                        beg-num) 1) 100) length))))
 841       (when (> length elmo-display-progress-threshold)
 842         (elmo-display-progress
 843          'elmo-nntp-msgdb-create "Getting overview..." 100)))
 844     (if (not use-xover)
 845         (setq ret-val (elmo-nntp-msgdb-create-by-header
 846                        session numbers
 847                        new-mark already-mark seen-mark seen-list))
 848       (with-current-buffer (elmo-network-session-buffer session)
 849         (if ov-str
 850             (setq ret-val
 851                   (elmo-msgdb-append
 852                    ret-val
 853                    (elmo-nntp-create-msgdb-from-overview-string
 854                     ov-str
 855                     new-mark
 856                     already-mark
 857                     seen-mark
 858                     important-mark
 859                     seen-list
 860                     filter))))))
 861     (elmo-folder-set-killed-list-internal
 862      folder
 863      (nconc
 864       (elmo-folder-killed-list-internal folder)
 865       (car (elmo-list-diff
 866             numbers
 867             (mapcar 'car
 868                     (elmo-msgdb-get-number-alist
 869                      ret-val))))))
 870     ;; If there are canceled messages, overviews are not obtained
 871     ;; to max-number(inn 2.3?).
 872     (when (and (elmo-nntp-max-number-precedes-list-active-p)
 873                (elmo-nntp-list-active-p session))
 874       (elmo-nntp-send-command session
 875                               (format "list active %s"
 876                                       (elmo-nntp-folder-group-internal
 877                                        folder)))
 878       (if (null (elmo-nntp-read-response session))
 879           (progn
 880             (elmo-nntp-set-list-active session nil)
 881             (error "NNTP list command failed")))
 882       (elmo-nntp-catchup-msgdb
 883        ret-val
 884        (nth 1 (read (concat "(" (elmo-nntp-read-contents
 885                                  session) ")")))))
 886     ret-val))
 887
 888 (luna-define-method elmo-folder-update-number ((folder elmo-nntp-folder))
 889   (if (elmo-nntp-max-number-precedes-list-active-p)
 890       (let ((session (elmo-nntp-get-session folder))
 891             (number-alist (elmo-msgdb-get-number-alist
 892                            (elmo-folder-msgdb folder))))
 893         (if (elmo-nntp-list-active-p session)
 894             (let (msgdb-max max-number)
 895               ;; If there are canceled messages, overviews are not obtained
 896               ;; to max-number(inn 2.3?).
 897               (elmo-nntp-select-group session
 898                                       (elmo-nntp-folder-group-internal folder))
 899               (elmo-nntp-send-command session
 900                                       (format "list active %s"
 901                                               (elmo-nntp-folder-group-internal
 902                                                folder)))
 903               (if (null (elmo-nntp-read-response session))
 904                   (error "NNTP list command failed"))
 905               (setq max-number
 906                     (nth 1 (read (concat "(" (elmo-nntp-read-contents
 907                                               session) ")"))))
 908               (setq msgdb-max
 909                     (car (nth (max (- (length number-alist) 1) 0)
 910                               number-alist)))
 911               (if (or (and number-alist (not msgdb-max))
 912                       (and msgdb-max max-number
 913                            (< msgdb-max max-number)))
 914                   (elmo-msgdb-set-number-alist
 915                    (elmo-folder-msgdb folder)
 916                    (nconc number-alist
 917                           (list (cons max-number nil))))))))))
 918
 919 (defun elmo-nntp-msgdb-create-by-header (session numbers
 920                                                  new-mark already-mark
 921                                                  seen-mark seen-list)
 922   (with-temp-buffer
 923     (elmo-nntp-retrieve-headers session (current-buffer) numbers)
 924     (elmo-nntp-msgdb-create-message
 925      (length numbers) new-mark already-mark seen-mark seen-list)))
 926
 927 (defun elmo-nntp-parse-xhdr-response (string)
 928   (let (response)
 929     (with-temp-buffer
 930       (insert string)
 931       (goto-char (point-min))
 932       (while (not (eobp))
 933         (if (looking-at "^\\([0-9]+\\) \\(.*\\)$")
 934             (setq response (cons (cons (string-to-int (elmo-match-buffer 1))
 935                                        (elmo-match-buffer 2))
 936                                  response)))
 937         (forward-line 1)))
 938     (nreverse response)))
 939
 940 (defun elmo-nntp-parse-overview-string (string)
 941   (save-excursion
 942     (let ((tmp-buffer (get-buffer-create " *ELMO Overview TMP*"))
 943           ret-list ret-val beg)
 944       (set-buffer tmp-buffer)
 945       (erase-buffer)
 946       (elmo-set-buffer-multibyte nil)
 947       (insert string)
 948       (goto-char (point-min))
 949       (setq beg (point))
 950       (while (not (eobp))
 951         (end-of-line)
 952         (setq ret-list (save-match-data
 953                          (apply 'vector (split-string
 954                                          (buffer-substring beg (point))
 955                                          "\t"))))
 956         (beginning-of-line)
 957         (forward-line 1)
 958         (setq beg (point))
 959         (setq ret-val (nconc ret-val (list ret-list))))
 960 ;;;   (kill-buffer tmp-buffer)
 961       ret-val)))
 962
 963 (defun elmo-nntp-get-newsgroup-by-msgid (msgid server user port type)
 964   "Get nntp header string."
 965   (save-excursion
 966     (let ((session (elmo-nntp-get-session
 967                     (luna-make-entity
 968                      'elmo-nntp-folder
 969                      :user user
 970                      :server server
 971                      :port port
 972                      :stream-type type))))
 973       (elmo-nntp-send-command session
 974                               (format "head %s" msgid))
 975       (if (elmo-nntp-read-response session)
 976           (elmo-nntp-read-contents session))
 977       (with-current-buffer (elmo-network-session-buffer session)
 978         (std11-field-body "Newsgroups")))))
 979
 980 (luna-define-method elmo-message-fetch-with-cache-process :around
 981   ((folder elmo-nntp-folder) number strategy &optional section unread)
 982   (when (luna-call-next-method)
 983     (elmo-nntp-setup-crosspost-buffer folder number)
 984     (unless unread
 985       (elmo-nntp-folder-update-crosspost-message-alist
 986        folder (list number)))
 987     t))
 988
 989 (luna-define-method elmo-message-fetch-plugged ((folder elmo-nntp-folder)
 990                                                 number strategy
 991                                                 &optional section outbuf
 992                                                 unread)
 993   (elmo-nntp-message-fetch folder number strategy section outbuf unread))
 994
 995 (defun elmo-nntp-message-fetch (folder number strategy section outbuf unread)
 996   (let ((session (elmo-nntp-get-session folder))
 997         newsgroups)
 998     (with-current-buffer (elmo-network-session-buffer session)
 999       (elmo-nntp-select-group session (elmo-nntp-folder-group-internal folder))
1000       (elmo-nntp-send-command session (format "article %s" number))
1001       (if (null (elmo-nntp-read-response session t))
1002           (progn
1003             (with-current-buffer outbuf (erase-buffer))
1004             (message "Fetching message failed")
1005             nil)
1006         (prog1 (elmo-nntp-read-body session outbuf)
1007           (with-current-buffer outbuf
1008             (goto-char (point-min))
1009             (while (re-search-forward "^\\." nil t)
1010               (replace-match "")
1011               (forward-line))
1012             (elmo-nntp-setup-crosspost-buffer folder number)
1013             (unless unread
1014               (elmo-nntp-folder-update-crosspost-message-alist
1015                folder (list number)))))))))
1016
1017 (defun elmo-nntp-post (hostname content-buf)
1018   (let ((session (elmo-nntp-get-session
1019                   (luna-make-entity
1020                    'elmo-nntp-folder
1021                    :user elmo-nntp-default-user
1022                    :server hostname
1023                    :port elmo-nntp-default-port
1024                    :stream-type
1025                    (elmo-get-network-stream-type
1026                     elmo-nntp-default-stream-type))))
1027         response has-message-id)
1028     (save-excursion
1029       (set-buffer content-buf)
1030       (goto-char (point-min))
1031       (if (search-forward mail-header-separator nil t)
1032           (delete-region (match-beginning 0)(match-end 0)))
1033       (setq has-message-id (std11-field-body "message-id"))
1034       (elmo-nntp-send-command session "post")
1035       (if (string-match "^340" (setq response
1036                                      (elmo-nntp-read-raw-response session)))
1037           (if (string-match "recommended ID \\(<[^@]+@[^>]+>\\)" response)
1038               (unless has-message-id
1039                 (goto-char (point-min))
1040                 (insert (concat "Message-ID: "
1041                                 (elmo-match-string 1 response)
1042                                 "\n"))))
1043         (error "POST failed"))
1044       (run-hooks 'elmo-nntp-post-pre-hook)
1045       (elmo-nntp-send-buffer session content-buf)
1046       (elmo-nntp-send-command session ".")
1047 ;;;   (elmo-nntp-read-response buffer process t)
1048       (if (not (string-match
1049                 "^2" (setq response (elmo-nntp-read-raw-response
1050                                      session))))
1051           (error (concat "NNTP error: " response))))))
1052
1053 (defsubst elmo-nntp-send-data-line (session line)
1054   "Send LINE to SESSION."
1055   ;; Escape "." at start of a line
1056   (if (eq (string-to-char line) ?.)
1057       (process-send-string (elmo-network-session-process-internal
1058                             session) "."))
1059   (process-send-string (elmo-network-session-process-internal
1060                         session) line)
1061   (process-send-string (elmo-network-session-process-internal
1062                         session) "\r\n"))
1063
1064 (defun elmo-nntp-send-buffer (session databuf)
1065   "Send data content of DATABUF to SESSION."
1066   (let ((data-continue t)
1067         line bol)
1068     (with-current-buffer databuf
1069       (goto-char (point-min))
1070       (while data-continue
1071         (beginning-of-line)
1072         (setq bol (point))
1073         (end-of-line)
1074         (setq line (buffer-substring bol (point)))
1075         (unless (eq (forward-line 1) 0) (setq data-continue nil))
1076         (elmo-nntp-send-data-line session line)))))
1077
1078 (luna-define-method elmo-folder-delete-messages ((folder elmo-nntp-folder)
1079                                                  numbers)
1080   (elmo-nntp-folder-delete-messages folder numbers))
1081
1082 (defun elmo-nntp-folder-delete-messages (folder numbers)
1083   (let ((killed-list (elmo-folder-killed-list-internal folder)))
1084     (dolist (number numbers)
1085       (setq killed-list
1086             (elmo-msgdb-set-as-killed killed-list number)))
1087     (elmo-folder-set-killed-list-internal folder killed-list))
1088   t)
1089
1090 (luna-define-method elmo-folder-exists-p-plugged ((folder elmo-nntp-folder))
1091   (let ((session (elmo-nntp-get-session folder)))
1092           (elmo-nntp-send-command
1093            session
1094            (format "group %s"
1095                    (elmo-nntp-folder-group-internal folder)))
1096     (elmo-nntp-read-response session)))
1097
1098 (defun elmo-nntp-retrieve-field (spec field from-msgs)
1099   "Retrieve FIELD values from FROM-MSGS.
1100 Returns a list of cons cells like (NUMBER . VALUE)"
1101   (let ((session (elmo-nntp-get-session spec)))
1102     (if (elmo-nntp-xhdr-p session)
1103         (progn
1104           (elmo-nntp-select-group session (elmo-nntp-folder-group-internal spec))
1105           (elmo-nntp-send-command session
1106                                   (format "xhdr %s %s"
1107                                           field
1108                                           (if from-msgs
1109                                               (format
1110                                                "%d-%d"
1111                                                (car from-msgs)
1112                                                (nth
1113                                                 (max
1114                                                  (- (length from-msgs) 1) 0)
1115                                                 from-msgs))
1116                                             "0-")))
1117           (if (elmo-nntp-read-response session t)
1118               (elmo-nntp-parse-xhdr-response
1119                (elmo-nntp-read-contents session))
1120             (elmo-nntp-set-xhdr session nil)
1121             (error "NNTP XHDR command failed"))))))
1122
1123 (defun elmo-nntp-search-primitive (spec condition &optional from-msgs)
1124   (let ((search-key (elmo-filter-key condition)))
1125     (cond
1126      ((string= "last" search-key)
1127       (let ((numbers (or from-msgs (elmo-folder-list-messages spec))))
1128         (nthcdr (max (- (length numbers)
1129                         (string-to-int (elmo-filter-value condition)))
1130                      0)
1131                 numbers)))
1132      ((string= "first" search-key)
1133       (let* ((numbers (or from-msgs (elmo-folder-list-messages spec)))
1134              (rest (nthcdr (string-to-int (elmo-filter-value condition) )
1135                            numbers)))
1136         (mapcar '(lambda (x) (delete x numbers)) rest)
1137         numbers))
1138      ((or (string= "since" search-key)
1139           (string= "before" search-key))
1140       (let* ((specified-date (elmo-date-make-sortable-string
1141                               (elmo-date-get-datevec (elmo-filter-value
1142                                                       condition))))
1143              (since (string= "since" search-key))
1144              field-date  result)
1145         (if (eq (elmo-filter-type condition) 'unmatch)
1146             (setq since (not since)))
1147         (setq result
1148               (delq nil
1149                     (mapcar
1150                      (lambda (pair)
1151                        (setq field-date
1152                              (elmo-date-make-sortable-string
1153                               (timezone-fix-time
1154                                (cdr pair)
1155                                (current-time-zone) nil)))
1156                        (if (if since
1157                                (or (string= specified-date field-date)
1158                                    (string< specified-date field-date))
1159                              (string< field-date
1160                                       specified-date))
1161                            (car pair)))
1162                      (elmo-nntp-retrieve-field spec "date" from-msgs))))
1163         (if from-msgs
1164             (elmo-list-filter from-msgs result)
1165           result)))
1166      ((string= "body" search-key)
1167       (error
1168 "Search by BODY is not supported (Toggle the plug off to search from caches)"))
1169      (t
1170       (let ((val (elmo-filter-value condition))
1171             (negative (eq (elmo-filter-type condition) 'unmatch))
1172             (case-fold-search t)
1173             result)
1174         (setq result
1175               (delq nil
1176                     (mapcar
1177                      (lambda (pair)
1178                        (if (string-match val
1179                                          (eword-decode-string
1180                                           (decode-mime-charset-string
1181                                            (cdr pair) elmo-mime-charset)))
1182                            (unless negative (car pair))
1183                          (if negative (car pair))))
1184                      (elmo-nntp-retrieve-field spec search-key
1185                                                from-msgs))))
1186         (if from-msgs
1187             (elmo-list-filter from-msgs result)
1188           result))))))
1189
1190 (defun elmo-nntp-search-internal (folder condition from-msgs)
1191   (let (result)
1192     (cond
1193      ((vectorp condition)
1194       (setq result (elmo-nntp-search-primitive
1195                     folder condition from-msgs)))
1196      ((eq (car condition) 'and)
1197       (setq result (elmo-nntp-search-internal folder
1198                                               (nth 1 condition)
1199                                               from-msgs)
1200             result (elmo-list-filter result
1201                                      (elmo-nntp-search-internal
1202                                       folder (nth 2 condition)
1203                                       from-msgs))))
1204      ((eq (car condition) 'or)
1205       (setq result (elmo-nntp-search-internal folder
1206                                               (nth 1 condition)
1207                                               from-msgs)
1208             result (elmo-uniq-list
1209                     (nconc result
1210                            (elmo-nntp-search-internal folder
1211                                                       (nth 2 condition)
1212                                                       from-msgs)))
1213             result (sort result '<))))))
1214
1215 (luna-define-method elmo-folder-search :around ((folder elmo-nntp-folder)
1216                                                 condition &optional from-msgs)
1217   (if (elmo-folder-plugged-p folder)
1218       (elmo-nntp-search-internal folder condition from-msgs)
1219     (luna-call-next-method)))
1220
1221 (defun elmo-nntp-get-folders-info-prepare (folder session-keys)
1222   (condition-case ()
1223       (let ((session (elmo-nntp-get-session folder))
1224             key count)
1225         (with-current-buffer (elmo-network-session-buffer session)
1226           (unless (setq key (assoc session session-keys))
1227             (erase-buffer)
1228             (setq key (cons session
1229                             (vector 0
1230                                     (elmo-net-folder-server-internal folder)
1231                                     (elmo-net-folder-user-internal folder)
1232                                     (elmo-net-folder-port-internal folder)
1233                                     (elmo-net-folder-stream-type-internal
1234                                      folder))))
1235             (setq session-keys (nconc session-keys (list key))))
1236           (elmo-nntp-send-command session
1237                                   (format "group %s"
1238                                           (elmo-nntp-folder-group-internal
1239                                            folder))
1240                                   'noerase)
1241           (if elmo-nntp-get-folders-securely
1242               (accept-process-output
1243                (elmo-network-session-process-internal session)
1244                1))
1245           (setq count (aref (cdr key) 0))
1246           (aset (cdr key) 0 (1+ count))))
1247     (error
1248      (when elmo-auto-change-plugged
1249        (sit-for 1))
1250      nil))
1251   session-keys)
1252
1253 (defun elmo-nntp-get-folders-info (session-keys)
1254   (let ((sessions session-keys)
1255         (cur (get-buffer-create " *ELMO NNTP Temp*")))
1256     (while sessions
1257       (let* ((session (caar sessions))
1258              (key     (cdar sessions))
1259              (count   (aref key 0))
1260              (server  (aref key 1))
1261              (user    (aref key 2))
1262              (port    (aref key 3))
1263              (type    (aref key 4))
1264              (hashtb (or elmo-newsgroups-hashtb
1265                          (setq elmo-newsgroups-hashtb
1266                                (elmo-make-hash count)))))
1267         (save-excursion
1268           (elmo-nntp-groups-read-response session cur count)
1269           (set-buffer cur)
1270           (goto-char (point-min))
1271           (let ((case-replace nil)
1272                 (postfix (elmo-nntp-folder-postfix user server port type)))
1273             (if (not (string= postfix ""))
1274                 (save-excursion
1275                   (replace-regexp "^\\(211 [0-9]+ [0-9]+ [0-9]+ [^ \n]+\\).*$"
1276                                   (concat "\\1"
1277                                           (elmo-replace-in-string
1278                                            postfix
1279                                            "\\\\" "\\\\\\\\\\\\\\\\"))))))
1280           (let (len min max group)
1281             (while (not (eobp))
1282               (condition-case ()
1283                   (when (= (following-char) ?2)
1284                     (read cur)
1285                     (setq len (read cur)
1286                           min (read cur)
1287                           max (read cur))
1288                     (set (setq group (let ((obarray hashtb)) (read cur)))
1289                          (list len min max)))
1290                 (error (and group (symbolp group) (set group nil))))
1291               (forward-line 1))))
1292         (setq sessions (cdr sessions))))
1293     (kill-buffer cur)))
1294
1295 ;; original is 'nntp-retrieve-groups [Gnus]
1296 (defun elmo-nntp-groups-read-response (session outbuf count)
1297   (let* ((received 0)
1298          (last-point (point-min)))
1299     (with-current-buffer (elmo-network-session-buffer session)
1300       (accept-process-output
1301        (elmo-network-session-process-internal session) 1)
1302       (discard-input)
1303       ;; Wait for all replies.
1304       (message "Getting folders info...")
1305       (while (progn
1306                (goto-char last-point)
1307                ;; Count replies.
1308                (while (re-search-forward "^[0-9]" nil t)
1309                  (setq received
1310                        (1+ received)))
1311                (setq last-point (point))
1312                (< received count))
1313         (accept-process-output (elmo-network-session-process-internal session)
1314                                1)
1315         (discard-input)
1316         (when (> count elmo-display-progress-threshold)
1317           (if (or (zerop (% received 10)) (= received count))
1318               (elmo-display-progress
1319                'elmo-nntp-groups-read-response "Getting folders info..."
1320                (/ (* received 100) count)))))
1321       (when (> count elmo-display-progress-threshold)
1322         (elmo-display-progress
1323          'elmo-nntp-groups-read-response "Getting folders info..." 100))
1324       ;; Wait for the reply from the final command.
1325       (goto-char (point-max))
1326       (re-search-backward "^[0-9]" nil t)
1327       (when (looking-at "^[23]")
1328         (while (progn
1329                  (goto-char (point-max))
1330                  (not (re-search-backward "\r?\n" (- (point) 3) t)))
1331           (accept-process-output
1332            (elmo-network-session-process-internal session) 1)
1333           (discard-input)))
1334       ;; Now all replies are received.  We remove CRs.
1335       (goto-char (point-min))
1336       (while (search-forward "\r" nil t)
1337         (replace-match "" t t))
1338       (copy-to-buffer outbuf (point-min) (point-max)))))
1339
1340 ;; from nntp.el [Gnus]
1341
1342 (defsubst elmo-nntp-next-result-arrived-p ()
1343   (cond
1344    ((eq (following-char) ?2)
1345     (if (re-search-forward "\n\\.\r?\n" nil t)
1346         t
1347       nil))
1348    ((looking-at "[34]")
1349     (if (search-forward "\n" nil t)
1350         t
1351       nil))
1352    (t
1353     nil)))
1354
1355 (defun elmo-nntp-retrieve-headers (session outbuf articles)
1356   "Retrieve the headers of ARTICLES."
1357   (with-current-buffer (elmo-network-session-buffer session)
1358     (erase-buffer)
1359     (let ((number (length articles))
1360           (count 0)
1361           (received 0)
1362           (last-point (point-min))
1363           article)
1364       ;; Send HEAD commands.
1365       (while (setq article (pop articles))
1366         (elmo-nntp-send-command session
1367                                 (format "head %s" article)
1368                                 'noerase)
1369         (setq count (1+ count))
1370         ;; Every 200 requests we have to read the stream in
1371         ;; order to avoid deadlocks.
1372         (when (or (null articles)       ;All requests have been sent.
1373                   (zerop (% count elmo-nntp-header-fetch-chop-length)))
1374           (accept-process-output
1375            (elmo-network-session-process-internal session) 1)
1376           (discard-input)
1377           (while (progn
1378                    (goto-char last-point)
1379                    ;; Count replies.
1380                    (while (elmo-nntp-next-result-arrived-p)
1381                      (setq last-point (point))
1382                      (setq received (1+ received)))
1383                    (< received count))
1384             (when (> number elmo-display-progress-threshold)
1385               (if (or (zerop (% received 20)) (= received number))
1386                   (elmo-display-progress
1387                    'elmo-nntp-retrieve-headers "Getting headers..."
1388                    (/ (* received 100) number))))
1389             (accept-process-output
1390              (elmo-network-session-process-internal session) 1)
1391             (discard-input))))
1392       (when (> number elmo-display-progress-threshold)
1393         (elmo-display-progress
1394          'elmo-nntp-retrieve-headers "Getting headers..." 100))
1395       (message "Getting headers...done")
1396       ;; Remove all "\r"'s.
1397       (goto-char (point-min))
1398       (while (search-forward "\r\n" nil t)
1399         (replace-match "\n"))
1400       (copy-to-buffer outbuf (point-min) (point-max)))))
1401
1402 ;; end of from Gnus
1403
1404 (defun elmo-nntp-msgdb-create-message (len new-mark
1405                                            already-mark seen-mark seen-list)
1406   (save-excursion
1407     (let (beg overview number-alist mark-alist
1408               entity i num gmark seen message-id)
1409       (elmo-set-buffer-multibyte nil)
1410       (goto-char (point-min))
1411       (setq i 0)
1412       (message "Creating msgdb...")
1413       (while (not (eobp))
1414         (setq beg (save-excursion (forward-line 1) (point)))
1415         (setq num
1416               (and (looking-at "^2[0-9]*[ ]+\\([0-9]+\\)")
1417                    (string-to-int
1418                     (elmo-match-buffer 1))))
1419         (elmo-nntp-next-result-arrived-p)
1420         (when num
1421           (save-excursion
1422             (forward-line -1)
1423             (save-restriction
1424               (narrow-to-region beg (point))
1425               (setq entity
1426                     (elmo-msgdb-create-overview-from-buffer num))
1427               (when entity
1428                 (setq overview
1429                       (elmo-msgdb-append-element
1430                        overview entity))
1431                 (setq number-alist
1432                       (elmo-msgdb-number-add
1433                        number-alist
1434                        (elmo-msgdb-overview-entity-get-number entity)
1435                        (car entity)))
1436                 (setq message-id (car entity))
1437                 (setq seen (member message-id seen-list))
1438                 (if (setq gmark
1439                           (or (elmo-msgdb-global-mark-get message-id)
1440                               (if (elmo-file-cache-status
1441                                    (elmo-file-cache-get message-id))
1442                                   (if seen
1443                                       nil
1444                                     already-mark)
1445                                 (if seen
1446                                     (if elmo-nntp-use-cache
1447                                         seen-mark)
1448                                   new-mark))))
1449                     (setq mark-alist
1450                           (elmo-msgdb-mark-append
1451                            mark-alist
1452                            num gmark)))
1453                 ))))
1454         (when (> len elmo-display-progress-threshold)
1455           (setq i (1+ i))
1456           (if (or (zerop (% i 20)) (= i len))
1457               (elmo-display-progress
1458                'elmo-nntp-msgdb-create-message "Creating msgdb..."
1459                (/ (* i 100) len)))))
1460       (when (> len elmo-display-progress-threshold)
1461         (elmo-display-progress
1462          'elmo-nntp-msgdb-create-message "Creating msgdb..." 100))
1463       (list overview number-alist mark-alist))))
1464
1465 (luna-define-method elmo-message-use-cache-p ((folder elmo-nntp-folder) number)
1466   elmo-nntp-use-cache)
1467
1468 (defun elmo-nntp-parse-newsgroups (string &optional subscribe-only)
1469   (let ((nglist (elmo-parse string "[ \t\f\r\n,]*\\([^ \t\f\r\n,]+\\)"))
1470         ngs)
1471     (if (not subscribe-only)
1472         nglist
1473       (dolist (ng nglist)
1474         (if (intern-soft ng elmo-newsgroups-hashtb)
1475             (setq ngs (cons ng ngs))))
1476       ngs)))
1477
1478 ;;; Crosspost processing.
1479
1480 ;; 1. setup crosspost alist.
1481 ;;    1.1. When message is fetched and is crossposted message,
1482 ;;         it is remembered in `temp-crosses' slot.
1483 ;;         temp-crosses slot is a list of cons cell:
1484 ;;         (NUMBER . (MESSAGE-ID (LIST-OF-NEWSGROUPS) 'ng))
1485 ;;    1.2. In elmo-folder-close, `temp-crosses' slot is cleared,
1486 ;;    1.3. In elmo-folder-mark-as-read, move crosspost entry
1487 ;;         from `temp-crosses' slot to `elmo-crosspost-message-alist'.
1488
1489 ;; 2. process crosspost alist.
1490 ;;    2.1. At elmo-folder-process-crosspost, setup `reads' slot from
1491 ;;         `elmo-crosspost-message-alist'.
1492 ;;    2.2. remove crosspost entry for current newsgroup from
1493 ;;         `elmo-crosspost-message-alist'.
1494 ;;    2.3. elmo-folder-list-unreads return unread message list according to
1495 ;;         `reads' slot.
1496 ;;         (There's a problem that if `elmo-folder-list-unreads'
1497 ;;           never executed, crosspost information is thrown away.)
1498 ;;    2.4. In elmo-folder-close, `read' slot is cleared,
1499
1500 (defun elmo-nntp-setup-crosspost-buffer (folder number)
1501 ;;    1.1. When message is fetched and is crossposted message,
1502 ;;         it is remembered in `temp-crosses' slot.
1503 ;;         temp-crosses slot is a list of cons cell:
1504 ;;         (NUMBER . (MESSAGE-ID (LIST-OF-NEWSGROUPS) 'ng))
1505   (let (newsgroups crosspost-newsgroups message-id)
1506     (save-restriction
1507       (std11-narrow-to-header)
1508       (setq newsgroups (std11-fetch-field "newsgroups")
1509             message-id (std11-msg-id-string
1510                         (car (std11-parse-msg-id-string
1511                               (std11-fetch-field "message-id"))))))
1512     (when newsgroups
1513       (when (setq crosspost-newsgroups
1514                   (delete
1515                    (elmo-nntp-folder-group-internal folder)
1516                    (elmo-nntp-parse-newsgroups newsgroups t)))
1517         (unless (assq number
1518                       (elmo-nntp-folder-temp-crosses-internal folder))
1519           (elmo-nntp-folder-set-temp-crosses-internal
1520            folder
1521            (cons (cons number (list message-id crosspost-newsgroups 'ng))
1522                  (elmo-nntp-folder-temp-crosses-internal folder))))))))
1523
1524 (luna-define-method elmo-folder-close-internal ((folder elmo-nntp-folder))
1525 ;;    1.2. In elmo-folder-close, `temp-crosses' slot is cleared,
1526   (elmo-nntp-folder-set-temp-crosses-internal folder nil)
1527   (elmo-nntp-folder-set-reads-internal folder nil)
1528   )
1529
1530 (defun elmo-nntp-folder-update-crosspost-message-alist (folder numbers)
1531 ;;    1.3. In elmo-folder-mark-as-read, move crosspost entry
1532 ;;         from `temp-crosses' slot to `elmo-crosspost-message-alist'.
1533   (let (elem)
1534     (dolist (number numbers)
1535       (when (setq elem (assq number
1536                              (elmo-nntp-folder-temp-crosses-internal folder)))
1537         (unless (assoc (cdr (cdr elem)) elmo-crosspost-message-alist)
1538           (setq elmo-crosspost-message-alist
1539                 (cons (cdr elem) elmo-crosspost-message-alist)))
1540         (elmo-nntp-folder-set-temp-crosses-internal
1541          folder
1542          (delq elem (elmo-nntp-folder-temp-crosses-internal folder)))))))
1543
1544 (luna-define-method elmo-folder-mark-as-read ((folder elmo-nntp-folder)
1545                                               numbers)
1546   (elmo-nntp-folder-update-crosspost-message-alist folder numbers)
1547   t)
1548
1549 (luna-define-method elmo-folder-process-crosspost ((folder elmo-nntp-folder)
1550                                                    &optional
1551                                                    number-alist)
1552   (elmo-nntp-folder-process-crosspost folder number-alist))
1553
1554 (defun elmo-nntp-folder-process-crosspost (folder number-alist)
1555 ;;    2.1. At elmo-folder-process-crosspost, setup `reads' slot from
1556 ;;         `elmo-crosspost-message-alist'.
1557 ;;    2.2. remove crosspost entry for current newsgroup from
1558 ;;         `elmo-crosspost-message-alist'.
1559   (let (cross-deletes reads entity ngs)
1560     (dolist (cross elmo-crosspost-message-alist)
1561       (if number-alist
1562           (when (setq entity (rassoc (nth 0 cross) number-alist))
1563             (setq reads (cons (car entity) reads)))
1564         (when (setq entity (elmo-msgdb-overview-get-entity
1565                             (nth 0 cross)
1566                             (elmo-folder-msgdb folder)))
1567           (setq reads (cons (elmo-msgdb-overview-entity-get-number entity)
1568                             reads))))
1569       (when entity
1570         (if (setq ngs (delete (elmo-nntp-folder-group-internal folder)
1571                               (nth 1 cross)))
1572             (setcar (cdr cross) ngs)
1573           (setq cross-deletes (cons cross cross-deletes)))
1574         (setq elmo-crosspost-message-alist-modified t)))
1575     (dolist (dele cross-deletes)
1576       (setq elmo-crosspost-message-alist (delq
1577                                           dele
1578                                           elmo-crosspost-message-alist)))
1579     (elmo-nntp-folder-set-reads-internal folder reads)))
1580
1581 (luna-define-method elmo-folder-list-unreads-internal
1582   ((folder elmo-nntp-folder) unread-marks mark-alist)
1583   ;;    2.3. elmo-folder-list-unreads return unread message list according to
1584   ;;         `reads' slot.
1585   (let ((mark-alist (or mark-alist (elmo-msgdb-get-mark-alist
1586                                     (elmo-folder-msgdb folder)))))
1587     (elmo-living-messages (delq nil
1588                                 (mapcar
1589                                  (lambda (x)
1590                                    (if (member (nth 1 x) unread-marks)
1591                                        (car x)))
1592                                  mark-alist))
1593                           (elmo-nntp-folder-reads-internal folder))))
1594
1595 (require 'product)
1596 (product-provide (provide 'elmo-nntp) (require 'elmo-version))
1597
1598 ;;; elmo-nntp.el ends here