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