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