1;;; nntp.el --- nntp access for Gnus 2 3;; Copyright (C) 1987, 1988, 1989, 1990, 1992, 1993, 4;; 1994, 1995, 1996, 1997, 1998, 2000, 2001, 2002, 5;; 2003, 2004, 2005, 2006, 2007 Free Software Foundation, Inc. 6 7;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org> 8;; Keywords: news 9 10;; This file is part of GNU Emacs. 11 12;; GNU Emacs is free software; you can redistribute it and/or modify 13;; it under the terms of the GNU General Public License as published 14;; by the Free Software Foundation; either version 2, or (at your 15;; option) any later version. 16 17;; GNU Emacs is distributed in the hope that it will be useful, but 18;; WITHOUT ANY WARRANTY; without even the implied warranty of 19;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 20;; General Public License for more details. 21 22;; You should have received a copy of the GNU General Public License 23;; along with GNU Emacs; see the file COPYING. If not, write to the 24;; Free Software Foundation, 51 Franklin Street, Fifth Floor, Boston, 25;; MA 02110-1301, USA. 26 27;;; Commentary: 28 29;;; Code: 30 31(require 'nnheader) 32(require 'nnoo) 33(require 'gnus-util) 34 35(nnoo-declare nntp) 36 37(eval-when-compile (require 'cl)) 38 39(defgroup nntp nil 40 "NNTP access for Gnus." 41 :group 'gnus) 42 43(defvoo nntp-address nil 44 "Address of the physical nntp server.") 45 46(defvoo nntp-port-number "nntp" 47 "Port number on the physical nntp server.") 48 49(defvoo nntp-server-opened-hook '(nntp-send-mode-reader) 50 "*Hook used for sending commands to the server at startup. 51The default value is `nntp-send-mode-reader', which makes an innd 52server spawn an nnrpd server.") 53 54(defvoo nntp-authinfo-function 'nntp-send-authinfo 55 "Function used to send AUTHINFO to the server. 56It is called with no parameters.") 57 58(defvoo nntp-server-action-alist 59 '(("nntpd 1\\.5\\.11t" 60 (remove-hook 'nntp-server-opened-hook 'nntp-send-mode-reader)) 61 ("NNRP server Netscape" 62 (setq nntp-server-list-active-group nil))) 63 "Alist of regexps to match on server types and actions to be taken. 64For instance, if you want Gnus to beep every time you connect 65to innd, you could say something like: 66 67\(setq nntp-server-action-alist 68 '((\"innd\" (ding)))) 69 70You probably don't want to do that, though.") 71 72(defvoo nntp-open-connection-function 'nntp-open-network-stream 73 "*Function used for connecting to a remote system. 74It will be called with the buffer to output in as argument. 75 76Currently, five such functions are provided (please refer to their 77respective doc string for more information), three of them establishing 78direct connections to the nntp server, and two of them using an indirect 79host. 80 81Direct connections: 82- `nntp-open-network-stream' (the default), 83- `nntp-open-ssl-stream', 84- `nntp-open-tls-stream', 85- `nntp-open-telnet-stream'. 86 87Indirect connections: 88- `nntp-open-via-rlogin-and-telnet', 89- `nntp-open-via-telnet-and-telnet'.") 90 91(defvoo nntp-never-echoes-commands nil 92 "*Non-nil means the nntp server never echoes commands. 93It is reported that some nntps server doesn't echo commands. So, you 94may want to set this to non-nil in the method for such a server setting 95`nntp-open-connection-function' to `nntp-open-ssl-stream' for example. 96Note that the `nntp-open-connection-functions-never-echo-commands' 97variable overrides the nil value of this variable.") 98 99(defvoo nntp-open-connection-functions-never-echo-commands 100 '(nntp-open-network-stream) 101 "*List of functions that never echo commands. 102Add or set a function which you set to `nntp-open-connection-function' 103to this list if it does not echo commands. Note that a non-nil value 104of the `nntp-never-echoes-commands' variable overrides this variable.") 105 106(defvoo nntp-pre-command nil 107 "*Pre-command to use with the various nntp-open-via-* methods. 108This is where you would put \"runsocks\" or stuff like that.") 109 110(defvoo nntp-telnet-command "telnet" 111 "*Telnet command used to connect to the nntp server. 112This command is used by the various nntp-open-via-* methods.") 113 114(defvoo nntp-telnet-switches '("-8") 115 "*Switches given to the telnet command `nntp-telnet-command'.") 116 117(defvoo nntp-end-of-line "\r\n" 118 "*String to use on the end of lines when talking to the NNTP server. 119This is \"\\r\\n\" by default, but should be \"\\n\" when 120using an indirect connection method (nntp-open-via-*).") 121 122(defvoo nntp-via-rlogin-command "rsh" 123 "*Rlogin command used to connect to an intermediate host. 124This command is used by the `nntp-open-via-rlogin-and-telnet' method. 125The default is \"rsh\", but \"ssh\" is a popular alternative.") 126 127(defvoo nntp-via-rlogin-command-switches nil 128 "*Switches given to the rlogin command `nntp-via-rlogin-command'. 129If you use \"ssh\" for `nntp-via-rlogin-command', you may set this to 130\(\"-C\") in order to compress all data connections, otherwise set this 131to \(\"-t\" \"-e\" \"none\") or (\"-C\" \"-t\" \"-e\" \"none\") if the telnet 132command requires a pseudo-tty allocation on an intermediate host.") 133 134(defvoo nntp-via-telnet-command "telnet" 135 "*Telnet command used to connect to an intermediate host. 136This command is used by the `nntp-open-via-telnet-and-telnet' method.") 137 138(defvoo nntp-via-telnet-switches '("-8") 139 "*Switches given to the telnet command `nntp-via-telnet-command'.") 140 141(defvoo nntp-via-user-name nil 142 "*User name to log in on an intermediate host with. 143This variable is used by the `nntp-open-via-telnet-and-telnet' method.") 144 145(defvoo nntp-via-user-password nil 146 "*Password to use to log in on an intermediate host with. 147This variable is used by the `nntp-open-via-telnet-and-telnet' method.") 148 149(defvoo nntp-via-address nil 150 "*Address of an intermediate host to connect to. 151This variable is used by the `nntp-open-via-rlogin-and-telnet' and 152`nntp-open-via-telnet-and-telnet' methods.") 153 154(defvoo nntp-via-envuser nil 155 "*Whether both telnet client and server support the ENVIRON option. 156If non-nil, there will be no prompt for a login name.") 157 158(defvoo nntp-via-shell-prompt "bash\\|\$ *\r?$\\|> *\r?" 159 "*Regular expression to match the shell prompt on an intermediate host. 160This variable is used by the `nntp-open-via-telnet-and-telnet' method.") 161 162(defvoo nntp-large-newsgroup 50 163 "*The number of articles which indicates a large newsgroup. 164If the number of articles is greater than the value, verbose 165messages will be shown to indicate the current status.") 166 167(defvoo nntp-maximum-request 400 168 "*The maximum number of the requests sent to the NNTP server at one time. 169If Emacs hangs up while retrieving headers, set the variable to a 170lower value.") 171 172(defvoo nntp-nov-is-evil nil 173 "*If non-nil, nntp will never attempt to use XOVER when talking to the server.") 174 175(defvoo nntp-xover-commands '("XOVER" "XOVERVIEW") 176 "*List of strings that are used as commands to fetch NOV lines from a server. 177The strings are tried in turn until a positive response is gotten. If 178none of the commands are successful, nntp will just grab headers one 179by one.") 180 181(defvoo nntp-nov-gap 5 182 "*Maximum allowed gap between two articles. 183If the gap between two consecutive articles is bigger than this 184variable, split the XOVER request into two requests.") 185 186(defvoo nntp-prepare-server-hook nil 187 "*Hook run before a server is opened. 188If can be used to set up a server remotely, for instance. Say you 189have an account at the machine \"other.machine\". This machine has 190access to an NNTP server that you can't access locally. You could 191then use this hook to rsh to the remote machine and start a proxy NNTP 192server there that you can connect to. See also 193`nntp-open-connection-function'") 194 195(defvoo nntp-coding-system-for-read 'binary 196 "*Coding system to read from NNTP.") 197 198(defvoo nntp-coding-system-for-write 'binary 199 "*Coding system to write to NNTP.") 200 201(defcustom nntp-authinfo-file "~/.authinfo" 202 ".netrc-like file that holds nntp authinfo passwords." 203 :group 'nntp 204 :type 205 '(choice file 206 (repeat :tag "Entries" 207 :menu-tag "Inline" 208 (list :format "%v" 209 :value ("" ("login" . "") ("password" . "")) 210 (string :tag "Host") 211 (checklist :inline t 212 (cons :format "%v" 213 (const :format "" "login") 214 (string :format "Login: %v")) 215 (cons :format "%v" 216 (const :format "" "password") 217 (string :format "Password: %v"))))))) 218 219 220 221(defvoo nntp-connection-timeout nil 222 "*Number of seconds to wait before an nntp connection times out. 223If this variable is nil, which is the default, no timers are set. 224NOTE: This variable is never seen to work in Emacs 20 and XEmacs 21.") 225 226(defvoo nntp-prepare-post-hook nil 227 "*Hook run just before posting an article. It is supposed to be used 228to insert Cancel-Lock headers.") 229 230;;; Internal variables. 231 232(defvar nntp-record-commands nil 233 "*If non-nil, nntp will record all commands in the \"*nntp-log*\" buffer.") 234 235(defvar nntp-have-messaged nil) 236 237(defvar nntp-process-wait-for nil) 238(defvar nntp-process-to-buffer nil) 239(defvar nntp-process-callback nil) 240(defvar nntp-process-decode nil) 241(defvar nntp-process-start-point nil) 242(defvar nntp-inside-change-function nil) 243(defvoo nntp-last-command-time nil) 244(defvoo nntp-last-command nil) 245(defvoo nntp-authinfo-password nil) 246(defvoo nntp-authinfo-user nil) 247 248(defvar nntp-connection-list nil) 249 250(defvoo nntp-server-type nil) 251(defvoo nntp-connection-alist nil) 252(defvoo nntp-status-string "") 253(defconst nntp-version "nntp 5.0") 254(defvoo nntp-inhibit-erase nil) 255(defvoo nntp-inhibit-output nil) 256 257(defvoo nntp-server-xover 'try) 258(defvoo nntp-server-list-active-group 'try) 259 260(defvar nntp-async-needs-kluge 261 (string-match "^GNU Emacs 20\\.3\\." (emacs-version)) 262 "*When non-nil, nntp will poll asynchronous connections 263once a second. By default, this is turned on only for Emacs 26420.3, which has a bug that breaks nntp's normal method of 265noticing asynchronous data.") 266 267(defvar nntp-async-timer nil) 268(defvar nntp-async-process-list nil) 269 270(defvar nntp-ssl-program 271 "openssl s_client -quiet -ssl3 -connect %s:%p" 272"A string containing commands for SSL connections. 273Within a string, %s is replaced with the server address and %p with 274port number on server. The program should accept IMAP commands on 275stdin and return responses to stdout.") 276 277(defvar nntp-authinfo-rejected nil 278"A custom error condition used to report 'Authentication Rejected' errors. 279Condition handlers that match just this condition ensure that the nntp 280backend doesn't catch this error.") 281(put 'nntp-authinfo-rejected 'error-conditions '(error nntp-authinfo-rejected)) 282(put 'nntp-authinfo-rejected 'error-message "Authorization Rejected") 283 284 285 286;;; Internal functions. 287 288(defsubst nntp-send-string (process string) 289 "Send STRING to PROCESS." 290 ;; We need to store the time to provide timeouts, and 291 ;; to store the command so the we can replay the command 292 ;; if the server gives us an AUTHINFO challenge. 293 (setq nntp-last-command-time (current-time) 294 nntp-last-command string) 295 (when nntp-record-commands 296 (nntp-record-command string)) 297 (process-send-string process (concat string nntp-end-of-line)) 298 (or (memq (process-status process) '(open run)) 299 (nntp-report "Server closed connection"))) 300 301(defun nntp-record-command (string) 302 "Record the command STRING." 303 (save-excursion 304 (set-buffer (get-buffer-create "*nntp-log*")) 305 (goto-char (point-max)) 306 (let ((time (current-time))) 307 (insert (format-time-string "%Y%m%dT%H%M%S" time) 308 "." (format "%03d" (/ (nth 2 time) 1000)) 309 " " nntp-address " " string "\n")))) 310 311(defun nntp-report (&rest args) 312 "Report an error from the nntp backend. The first string in ARGS 313can be a format string. For some commands, the failed command may be 314retried once before actually displaying the error report." 315 316 (when nntp-record-commands 317 (nntp-record-command "*** CALLED nntp-report ***")) 318 319 (nnheader-report 'nntp args) 320 321 (apply 'error args)) 322 323(defun nntp-report-1 (&rest args) 324 "Throws out to nntp-with-open-group-error so that the connection may 325be restored and the command retried." 326 327 (when nntp-record-commands 328 (nntp-record-command "*** CONNECTION LOST ***")) 329 330 (throw 'nntp-with-open-group-error t)) 331 332(defsubst nntp-wait-for (process wait-for buffer &optional decode discard) 333 "Wait for WAIT-FOR to arrive from PROCESS." 334 (save-excursion 335 (set-buffer (process-buffer process)) 336 (goto-char (point-min)) 337 (while (and (or (not (memq (char-after (point)) '(?2 ?3 ?4 ?5))) 338 (looking-at "48[02]")) 339 (memq (process-status process) '(open run))) 340 (cond ((looking-at "480") 341 (nntp-handle-authinfo process)) 342 ((looking-at "482") 343 (nnheader-report 'nntp (get 'nntp-authinfo-rejected 'error-message)) 344 (signal 'nntp-authinfo-rejected nil)) 345 ((looking-at "^.*\n") 346 (delete-region (point) (progn (forward-line 1) (point))))) 347 (nntp-accept-process-output process) 348 (goto-char (point-min))) 349 (prog1 350 (cond 351 ((looking-at "[45]") 352 (progn 353 (nntp-snarf-error-message) 354 nil)) 355 ((not (memq (process-status process) '(open run))) 356 (nntp-report "Server closed connection")) 357 (t 358 (goto-char (point-max)) 359 (let ((limit (point-min)) 360 response) 361 (while (not (re-search-backward wait-for limit t)) 362 (nntp-accept-process-output process) 363 ;; We assume that whatever we wait for is less than 1000 364 ;; characters long. 365 (setq limit (max (- (point-max) 1000) (point-min))) 366 (goto-char (point-max))) 367 (setq response (match-string 0)) 368 (with-current-buffer nntp-server-buffer 369 (setq nntp-process-response response))) 370 (nntp-decode-text (not decode)) 371 (unless discard 372 (save-excursion 373 (set-buffer buffer) 374 (goto-char (point-max)) 375 (insert-buffer-substring (process-buffer process)) 376 ;; Nix out "nntp reading...." message. 377 (when nntp-have-messaged 378 (setq nntp-have-messaged nil) 379 (nnheader-message 5 "")))) 380 t)) 381 (unless discard 382 (erase-buffer))))) 383 384(defun nntp-kill-buffer (buffer) 385 (when (buffer-name buffer) 386 (kill-buffer buffer) 387 (nnheader-init-server-buffer))) 388 389(defsubst nntp-find-connection (buffer) 390 "Find the connection delivering to BUFFER." 391 (let ((alist nntp-connection-alist) 392 (buffer (if (stringp buffer) (get-buffer buffer) buffer)) 393 process entry) 394 (while (and alist (setq entry (pop alist))) 395 (when (eq buffer (cadr entry)) 396 (setq process (car entry) 397 alist nil))) 398 (when process 399 (if (memq (process-status process) '(open run)) 400 process 401 (nntp-kill-buffer (process-buffer process)) 402 (setq nntp-connection-alist (delq entry nntp-connection-alist)) 403 nil)))) 404 405(defsubst nntp-find-connection-entry (buffer) 406 "Return the entry for the connection to BUFFER." 407 (assq (nntp-find-connection buffer) nntp-connection-alist)) 408 409(defun nntp-find-connection-buffer (buffer) 410 "Return the process connection buffer tied to BUFFER." 411 (let ((process (nntp-find-connection buffer))) 412 (when process 413 (process-buffer process)))) 414 415(defsubst nntp-retrieve-data (command address port buffer 416 &optional wait-for callback decode) 417 "Use COMMAND to retrieve data into BUFFER from PORT on ADDRESS." 418 (let ((process (or (nntp-find-connection buffer) 419 (nntp-open-connection buffer)))) 420 (if process 421 (progn 422 (unless (or nntp-inhibit-erase nnheader-callback-function) 423 (save-excursion 424 (set-buffer (process-buffer process)) 425 (erase-buffer))) 426 (condition-case err 427 (progn 428 (when command 429 (nntp-send-string process command)) 430 (cond 431 ((eq callback 'ignore) 432 t) 433 ((and callback wait-for) 434 (nntp-async-wait process wait-for buffer decode callback) 435 t) 436 (wait-for 437 (nntp-wait-for process wait-for buffer decode)) 438 (t t))) 439 (nntp-authinfo-rejected 440 (signal 'nntp-authinfo-rejected (cdr err))) 441 (error 442 (nnheader-report 'nntp "Couldn't open connection to %s: %s" 443 address err)) 444 (quit 445 (message "Quit retrieving data from nntp") 446 (signal 'quit nil) 447 nil))) 448 (nnheader-report 'nntp "Couldn't open connection to %s" address)))) 449 450(defsubst nntp-send-command (wait-for &rest strings) 451 "Send STRINGS to server and wait until WAIT-FOR returns." 452 (when (and (not nnheader-callback-function) 453 (not nntp-inhibit-output)) 454 (save-excursion 455 (set-buffer nntp-server-buffer) 456 (erase-buffer))) 457 (let* ((command (mapconcat 'identity strings " ")) 458 (process (nntp-find-connection nntp-server-buffer)) 459 (buffer (and process (process-buffer process))) 460 (pos (and buffer (with-current-buffer buffer (point))))) 461 (if process 462 (prog1 463 (nntp-retrieve-data command 464 nntp-address nntp-port-number 465 nntp-server-buffer 466 wait-for nnheader-callback-function) 467 ;; If nothing to wait for, still remove possibly echo'ed commands. 468 ;; We don't have echoes if `nntp-never-echoes-commands' is non-nil 469 ;; or the value of `nntp-open-connection-function' is in 470 ;; `nntp-open-connection-functions-never-echo-commands', so we 471 ;; skip this in that cases. 472 (unless (or wait-for 473 nntp-never-echoes-commands 474 (memq 475 nntp-open-connection-function 476 nntp-open-connection-functions-never-echo-commands)) 477 (nntp-accept-response) 478 (save-excursion 479 (set-buffer buffer) 480 (goto-char pos) 481 (if (looking-at (regexp-quote command)) 482 (delete-region pos (progn (forward-line 1) 483 (gnus-point-at-bol)))) 484 ))) 485 (nnheader-report 'nntp "Couldn't open connection to %s." 486 nntp-address)))) 487 488(defun nntp-send-command-nodelete (wait-for &rest strings) 489 "Send STRINGS to server and wait until WAIT-FOR returns." 490 (let* ((command (mapconcat 'identity strings " ")) 491 (process (nntp-find-connection nntp-server-buffer)) 492 (buffer (and process (process-buffer process))) 493 (pos (and buffer (with-current-buffer buffer (point))))) 494 (if process 495 (prog1 496 (nntp-retrieve-data command 497 nntp-address nntp-port-number 498 nntp-server-buffer 499 wait-for nnheader-callback-function) 500 ;; If nothing to wait for, still remove possibly echo'ed commands 501 (unless wait-for 502 (nntp-accept-response) 503 (save-excursion 504 (set-buffer buffer) 505 (goto-char pos) 506 (if (looking-at (regexp-quote command)) 507 (delete-region pos (progn (forward-line 1) 508 (gnus-point-at-bol))))))) 509 (nnheader-report 'nntp "Couldn't open connection to %s." 510 nntp-address)))) 511 512(defun nntp-send-command-and-decode (wait-for &rest strings) 513 "Send STRINGS to server and wait until WAIT-FOR returns." 514 (when (and (not nnheader-callback-function) 515 (not nntp-inhibit-output)) 516 (save-excursion 517 (set-buffer nntp-server-buffer) 518 (erase-buffer))) 519 (let* ((command (mapconcat 'identity strings " ")) 520 (process (nntp-find-connection nntp-server-buffer)) 521 (buffer (and process (process-buffer process))) 522 (pos (and buffer (with-current-buffer buffer (point))))) 523 (if process 524 (prog1 525 (nntp-retrieve-data command 526 nntp-address nntp-port-number 527 nntp-server-buffer 528 wait-for nnheader-callback-function t) 529 ;; If nothing to wait for, still remove possibly echo'ed commands 530 (unless wait-for 531 (nntp-accept-response) 532 (save-excursion 533 (set-buffer buffer) 534 (goto-char pos) 535 (if (looking-at (regexp-quote command)) 536 (delete-region pos (progn (forward-line 1) (gnus-point-at-bol)))) 537 ))) 538 (nnheader-report 'nntp "Couldn't open connection to %s." 539 nntp-address)))) 540 541 542(defun nntp-send-buffer (wait-for) 543 "Send the current buffer to server and wait until WAIT-FOR returns." 544 (when (and (not nnheader-callback-function) 545 (not nntp-inhibit-output)) 546 (save-excursion 547 (set-buffer (nntp-find-connection-buffer nntp-server-buffer)) 548 (erase-buffer))) 549 (nntp-encode-text) 550 (mm-with-unibyte-current-buffer 551 ;; Some encoded unicode text contains character 0x80-0x9f e.g. Euro. 552 (process-send-region (nntp-find-connection nntp-server-buffer) 553 (point-min) (point-max))) 554 (nntp-retrieve-data 555 nil nntp-address nntp-port-number nntp-server-buffer 556 wait-for nnheader-callback-function)) 557 558 559 560;;; Interface functions. 561 562(nnoo-define-basics nntp) 563 564(defsubst nntp-next-result-arrived-p () 565 (cond 566 ;; A result that starts with a 2xx code is terminated by 567 ;; a line with only a "." on it. 568 ((eq (char-after) ?2) 569 (if (re-search-forward "\n\\.\r?\n" nil t) 570 t 571 nil)) 572 ;; A result that starts with a 3xx or 4xx code is terminated 573 ;; by a newline. 574 ((looking-at "[34]") 575 (if (search-forward "\n" nil t) 576 t 577 nil)) 578 ;; No result here. 579 (t 580 nil))) 581 582(eval-when-compile 583 (defvar nntp-with-open-group-internal nil) 584 (defvar nntp-report-n nil)) 585 586(defmacro nntp-with-open-group (group server &optional connectionless &rest forms) 587 "Protect against servers that don't like clients that keep idle connections opens. 588The problem being that these servers may either close a connection or 589simply ignore any further requests on a connection. Closed 590connections are not detected until accept-process-output has updated 591the process-status. Dropped connections are not detected until the 592connection timeouts (which may be several minutes) or 593nntp-connection-timeout has expired. When these occur 594nntp-with-open-group, opens a new connection then re-issues the NNTP 595command whose response triggered the error." 596 (when (and (listp connectionless) 597 (not (eq connectionless nil))) 598 (setq forms (cons connectionless forms) 599 connectionless nil)) 600 `(letf ((nntp-report-n (symbol-function 'nntp-report)) 601 ((symbol-function 'nntp-report) (symbol-function 'nntp-report-1)) 602 (nntp-with-open-group-internal nil)) 603 (while (catch 'nntp-with-open-group-error 604 ;; Open the connection to the server 605 ;; NOTE: Existing connections are NOT tested. 606 (nntp-possibly-change-group ,group ,server ,connectionless) 607 608 (let ((timer 609 (and nntp-connection-timeout 610 (nnheader-run-at-time 611 nntp-connection-timeout nil 612 '(lambda () 613 (let ((process (nntp-find-connection 614 nntp-server-buffer)) 615 (buffer (and process 616 (process-buffer process)))) 617 ;; When I an able to identify the 618 ;; connection to the server AND I've 619 ;; received NO reponse for 620 ;; nntp-connection-timeout seconds. 621 (when (and buffer (eq 0 (buffer-size buffer))) 622 ;; Close the connection. Take no 623 ;; other action as the accept input 624 ;; code will handle the closed 625 ;; connection. 626 (nntp-kill-buffer buffer)))))))) 627 (unwind-protect 628 (setq nntp-with-open-group-internal 629 (condition-case nil 630 (progn ,@forms) 631 (quit 632 (nntp-close-server) 633 (signal 'quit nil)))) 634 (when timer 635 (nnheader-cancel-timer timer))) 636 nil)) 637 (setf (symbol-function 'nntp-report) nntp-report-n)) 638 nntp-with-open-group-internal)) 639 640(deffoo nntp-retrieve-headers (articles &optional group server fetch-old) 641 "Retrieve the headers of ARTICLES." 642 (nntp-with-open-group 643 group server 644 (save-excursion 645 (set-buffer (nntp-find-connection-buffer nntp-server-buffer)) 646 (erase-buffer) 647 (if (and (not gnus-nov-is-evil) 648 (not nntp-nov-is-evil) 649 (nntp-retrieve-headers-with-xover articles fetch-old)) 650 ;; We successfully retrieved the headers via XOVER. 651 'nov 652 ;; XOVER didn't work, so we do it the hard, slow and inefficient 653 ;; way. 654 (let ((number (length articles)) 655 (articles articles) 656 (count 0) 657 (received 0) 658 (last-point (point-min)) 659 (buf (nntp-find-connection-buffer nntp-server-buffer)) 660 (nntp-inhibit-erase t) 661 article) 662 ;; Send HEAD commands. 663 (while (setq article (pop articles)) 664 (nntp-send-command 665 nil 666 "HEAD" (if (numberp article) 667 (int-to-string article) 668 ;; `articles' is either a list of article numbers 669 ;; or a list of article IDs. 670 article)) 671 (incf count) 672 ;; Every 400 requests we have to read the stream in 673 ;; order to avoid deadlocks. 674 (when (or (null articles) ;All requests have been sent. 675 (zerop (% count nntp-maximum-request))) 676 (nntp-accept-response) 677 (while (progn 678 (set-buffer buf) 679 (goto-char last-point) 680 ;; Count replies. 681 (while (nntp-next-result-arrived-p) 682 (setq last-point (point)) 683 (incf received)) 684 (< received count)) 685 ;; If number of headers is greater than 100, give 686 ;; informative messages. 687 (and (numberp nntp-large-newsgroup) 688 (> number nntp-large-newsgroup) 689 (zerop (% received 20)) 690 (nnheader-message 6 "NNTP: Receiving headers... %d%%" 691 (/ (* received 100) number))) 692 (nntp-accept-response)))) 693 (and (numberp nntp-large-newsgroup) 694 (> number nntp-large-newsgroup) 695 (nnheader-message 6 "NNTP: Receiving headers...done")) 696 697 ;; Now all of replies are received. Fold continuation lines. 698 (nnheader-fold-continuation-lines) 699 ;; Remove all "\r"'s. 700 (nnheader-strip-cr) 701 (copy-to-buffer nntp-server-buffer (point-min) (point-max)) 702 'headers))))) 703 704(deffoo nntp-retrieve-groups (groups &optional server) 705 "Retrieve group info on GROUPS." 706 (nntp-with-open-group 707 nil server 708 (when (nntp-find-connection-buffer nntp-server-buffer) 709 (catch 'done 710 (save-excursion 711 ;; Erase nntp-server-buffer before nntp-inhibit-erase. 712 (set-buffer nntp-server-buffer) 713 (erase-buffer) 714 (set-buffer (nntp-find-connection-buffer nntp-server-buffer)) 715 ;; The first time this is run, this variable is `try'. So we 716 ;; try. 717 (when (eq nntp-server-list-active-group 'try) 718 (nntp-try-list-active (car groups))) 719 (erase-buffer) 720 (let ((count 0) 721 (groups groups) 722 (received 0) 723 (last-point (point-min)) 724 (nntp-inhibit-erase t) 725 (buf (nntp-find-connection-buffer nntp-server-buffer)) 726 (command (if nntp-server-list-active-group 727 "LIST ACTIVE" "GROUP"))) 728 (while groups 729 ;; Timeout may have killed the buffer. 730 (unless (gnus-buffer-live-p buf) 731 (nnheader-report 'nntp "Connection to %s is closed." server) 732 (throw 'done nil)) 733 ;; Send the command to the server. 734 (nntp-send-command nil command (pop groups)) 735 (incf count) 736 ;; Every 400 requests we have to read the stream in 737 ;; order to avoid deadlocks. 738 (when (or (null groups) ;All requests have been sent. 739 (zerop (% count nntp-maximum-request))) 740 (nntp-accept-response) 741 (while (and (gnus-buffer-live-p buf) 742 (progn 743 ;; Search `blue moon' in this file for the 744 ;; reason why set-buffer here. 745 (set-buffer buf) 746 (goto-char last-point) 747 ;; Count replies. 748 (while (re-search-forward "^[0-9]" nil t) 749 (incf received)) 750 (setq last-point (point)) 751 (< received count))) 752 (nntp-accept-response)))) 753 754 ;; Wait for the reply from the final command. 755 (unless (gnus-buffer-live-p buf) 756 (nnheader-report 'nntp "Connection to %s is closed." server) 757 (throw 'done nil)) 758 (set-buffer buf) 759 (goto-char (point-max)) 760 (re-search-backward "^[0-9]" nil t) 761 (when (looking-at "^[23]") 762 (while (and (gnus-buffer-live-p buf) 763 (progn 764 (set-buffer buf) 765 (goto-char (point-max)) 766 (if (not nntp-server-list-active-group) 767 (not (re-search-backward "\r?\n" 768 (- (point) 3) t)) 769 (not (re-search-backward "^\\.\r?\n" 770 (- (point) 4) t))))) 771 (nntp-accept-response))) 772 773 ;; Now all replies are received. We remove CRs. 774 (unless (gnus-buffer-live-p buf) 775 (nnheader-report 'nntp "Connection to %s is closed." server) 776 (throw 'done nil)) 777 (set-buffer buf) 778 (goto-char (point-min)) 779 (while (search-forward "\r" nil t) 780 (replace-match "" t t)) 781 782 (if (not nntp-server-list-active-group) 783 (progn 784 (copy-to-buffer nntp-server-buffer (point-min) (point-max)) 785 'group) 786 ;; We have read active entries, so we just delete the 787 ;; superfluous gunk. 788 (goto-char (point-min)) 789 (while (re-search-forward "^[.2-5]" nil t) 790 (delete-region (match-beginning 0) 791 (progn (forward-line 1) (point)))) 792 (copy-to-buffer nntp-server-buffer (point-min) (point-max)) 793 'active))))))) 794 795(deffoo nntp-retrieve-articles (articles &optional group server) 796 (nntp-with-open-group 797 group server 798 (save-excursion 799 (let ((number (length articles)) 800 (articles articles) 801 (count 0) 802 (received 0) 803 (last-point (point-min)) 804 (buf (nntp-find-connection-buffer nntp-server-buffer)) 805 (nntp-inhibit-erase t) 806 (map (apply 'vector articles)) 807 (point 1) 808 article) 809 (set-buffer buf) 810 (erase-buffer) 811 ;; Send ARTICLE command. 812 (while (setq article (pop articles)) 813 (nntp-send-command 814 nil 815 "ARTICLE" (if (numberp article) 816 (int-to-string article) 817 ;; `articles' is either a list of article numbers 818 ;; or a list of article IDs. 819 article)) 820 (incf count) 821 ;; Every 400 requests we have to read the stream in 822 ;; order to avoid deadlocks. 823 (when (or (null articles) ;All requests have been sent. 824 (zerop (% count nntp-maximum-request))) 825 (nntp-accept-response) 826 (while (progn 827 (set-buffer buf) 828 (goto-char last-point) 829 ;; Count replies. 830 (while (nntp-next-result-arrived-p) 831 (aset map received (cons (aref map received) (point))) 832 (setq last-point (point)) 833 (incf received)) 834 (< received count)) 835 ;; If number of headers is greater than 100, give 836 ;; informative messages. 837 (and (numberp nntp-large-newsgroup) 838 (> number nntp-large-newsgroup) 839 (zerop (% received 20)) 840 (nnheader-message 6 "NNTP: Receiving articles... %d%%" 841 (/ (* received 100) number))) 842 (nntp-accept-response)))) 843 (and (numberp nntp-large-newsgroup) 844 (> number nntp-large-newsgroup) 845 (nnheader-message 6 "NNTP: Receiving articles...done")) 846 847 ;; Now we have all the responses. We go through the results, 848 ;; wash it and copy it over to the server buffer. 849 (set-buffer nntp-server-buffer) 850 (erase-buffer) 851 (setq last-point (point-min)) 852 (mapcar 853 (lambda (entry) 854 (narrow-to-region 855 (setq point (goto-char (point-max))) 856 (progn 857 (insert-buffer-substring buf last-point (cdr entry)) 858 (point-max))) 859 (setq last-point (cdr entry)) 860 (nntp-decode-text) 861 (widen) 862 (cons (car entry) point)) 863 map))))) 864 865(defun nntp-try-list-active (group) 866 (nntp-list-active-group group) 867 (save-excursion 868 (set-buffer nntp-server-buffer) 869 (goto-char (point-min)) 870 (cond ((or (eobp) 871 (looking-at "5[0-9]+")) 872 (setq nntp-server-list-active-group nil)) 873 (t 874 (setq nntp-server-list-active-group t))))) 875 876(deffoo nntp-list-active-group (group &optional server) 877 "Return the active info on GROUP (which can be a regexp)." 878 (nntp-with-open-group 879 nil server 880 (nntp-send-command "^\\.*\r?\n" "LIST ACTIVE" group))) 881 882(deffoo nntp-request-group-articles (group &optional server) 883 "Return the list of existing articles in GROUP." 884 (nntp-with-open-group 885 nil server 886 (nntp-send-command "^\\.*\r?\n" "LISTGROUP" group))) 887 888(deffoo nntp-request-article (article &optional group server buffer command) 889 (nntp-with-open-group 890 group server 891 (when (nntp-send-command-and-decode 892 "\r?\n\\.\r?\n" "ARTICLE" 893 (if (numberp article) (int-to-string article) article)) 894 (if (and buffer 895 (not (equal buffer nntp-server-buffer))) 896 (save-excursion 897 (set-buffer nntp-server-buffer) 898 (copy-to-buffer buffer (point-min) (point-max)) 899 (nntp-find-group-and-number group)) 900 (nntp-find-group-and-number group))))) 901 902(deffoo nntp-request-head (article &optional group server) 903 (nntp-with-open-group 904 group server 905 (when (nntp-send-command 906 "\r?\n\\.\r?\n" "HEAD" 907 (if (numberp article) (int-to-string article) article)) 908 (prog1 909 (nntp-find-group-and-number group) 910 (nntp-decode-text))))) 911 912(deffoo nntp-request-body (article &optional group server) 913 (nntp-with-open-group 914 group server 915 (nntp-send-command-and-decode 916 "\r?\n\\.\r?\n" "BODY" 917 (if (numberp article) (int-to-string article) article)))) 918 919(deffoo nntp-request-group (group &optional server dont-check) 920 (nntp-with-open-group 921 nil server 922 (when (nntp-send-command "^[245].*\n" "GROUP" group) 923 (let ((entry (nntp-find-connection-entry nntp-server-buffer))) 924 (setcar (cddr entry) group))))) 925 926(deffoo nntp-close-group (group &optional server) 927 t) 928 929(deffoo nntp-server-opened (&optional server) 930 "Say whether a connection to SERVER has been opened." 931 (and (nnoo-current-server-p 'nntp server) 932 nntp-server-buffer 933 (gnus-buffer-live-p nntp-server-buffer) 934 (nntp-find-connection nntp-server-buffer))) 935 936(deffoo nntp-open-server (server &optional defs connectionless) 937 (nnheader-init-server-buffer) 938 (if (nntp-server-opened server) 939 t 940 (when (or (stringp (car defs)) 941 (numberp (car defs))) 942 (setq defs (cons (list 'nntp-port-number (car defs)) (cdr defs)))) 943 (unless (assq 'nntp-address defs) 944 (setq defs (append defs (list (list 'nntp-address server))))) 945 (nnoo-change-server 'nntp server defs) 946 (unless connectionless 947 (or (nntp-find-connection nntp-server-buffer) 948 (nntp-open-connection nntp-server-buffer))))) 949 950(deffoo nntp-close-server (&optional server) 951 (nntp-possibly-change-group nil server t) 952 (let ((process (nntp-find-connection nntp-server-buffer))) 953 (while process 954 (when (memq (process-status process) '(open run)) 955 (ignore-errors 956 (nntp-send-string process "QUIT") 957 (unless (eq nntp-open-connection-function 'nntp-open-network-stream) 958 ;; Ok, this is evil, but when using telnet and stuff 959 ;; as the connection method, it's important that the 960 ;; QUIT command actually is sent out before we kill 961 ;; the process. 962 (sleep-for 1)))) 963 (nntp-kill-buffer (process-buffer process)) 964 (setq process (car (pop nntp-connection-alist)))) 965 (nnoo-close-server 'nntp))) 966 967(deffoo nntp-request-close () 968 (let (process) 969 (while (setq process (pop nntp-connection-list)) 970 (when (memq (process-status process) '(open run)) 971 (ignore-errors 972 (nntp-send-string process "QUIT") 973 (unless (eq nntp-open-connection-function 'nntp-open-network-stream) 974 ;; Ok, this is evil, but when using telnet and stuff 975 ;; as the connection method, it's important that the 976 ;; QUIT command actually is sent out before we kill 977 ;; the process. 978 (sleep-for 1)))) 979 (nntp-kill-buffer (process-buffer process))))) 980 981(deffoo nntp-request-list (&optional server) 982 (nntp-with-open-group 983 nil server 984 (nntp-send-command-and-decode "\r?\n\\.\r?\n" "LIST"))) 985 986(deffoo nntp-request-list-newsgroups (&optional server) 987 (nntp-with-open-group 988 nil server 989 (nntp-send-command "\r?\n\\.\r?\n" "LIST NEWSGROUPS"))) 990 991(deffoo nntp-request-newgroups (date &optional server) 992 (nntp-with-open-group 993 nil server 994 (save-excursion 995 (set-buffer nntp-server-buffer) 996 (let* ((time (date-to-time date)) 997 (ls (- (cadr time) (nth 8 (decode-time time))))) 998 (cond ((< ls 0) 999 (setcar time (1- (car time))) 1000 (setcar (cdr time) (+ ls 65536))) 1001 ((>= ls 65536) 1002 (setcar time (1+ (car time))) 1003 (setcar (cdr time) (- ls 65536))) 1004 (t 1005 (setcar (cdr time) ls))) 1006 (prog1 1007 (nntp-send-command 1008 "^\\.\r?\n" "NEWGROUPS" 1009 (format-time-string "%y%m%d %H%M%S" time) 1010 "GMT") 1011 (nntp-decode-text)))))) 1012 1013(deffoo nntp-request-post (&optional server) 1014 (nntp-with-open-group 1015 nil server 1016 (when (nntp-send-command "^[23].*\r?\n" "POST") 1017 (let ((response (with-current-buffer nntp-server-buffer 1018 nntp-process-response)) 1019 server-id) 1020 (when (and response 1021 (string-match "^[23].*\\(<[^\t\n @<>]+@[^\t\n @<>]+>\\)" 1022 response)) 1023 (setq server-id (match-string 1 response)) 1024 (narrow-to-region (goto-char (point-min)) 1025 (if (search-forward "\n\n" nil t) 1026 (1- (point)) 1027 (point-max))) 1028 (unless (mail-fetch-field "Message-ID") 1029 (goto-char (point-min)) 1030 (insert "Message-ID: " server-id "\n")) 1031 (widen)) 1032 (run-hooks 'nntp-prepare-post-hook) 1033 (nntp-send-buffer "^[23].*\n"))))) 1034 1035(deffoo nntp-request-type (group article) 1036 'news) 1037 1038(deffoo nntp-asynchronous-p () 1039 t) 1040 1041;;; Hooky functions. 1042 1043(defun nntp-send-mode-reader () 1044 "Send the MODE READER command to the nntp server. 1045This function is supposed to be called from `nntp-server-opened-hook'. 1046It will make innd servers spawn an nnrpd process to allow actual article 1047reading." 1048 (nntp-send-command "^.*\n" "MODE READER")) 1049 1050(defun nntp-send-authinfo (&optional send-if-force) 1051 "Send the AUTHINFO to the nntp server. 1052It will look in the \"~/.authinfo\" file for matching entries. If 1053nothing suitable is found there, it will prompt for a user name 1054and a password. 1055 1056If SEND-IF-FORCE, only send authinfo to the server if the 1057.authinfo file has the FORCE token." 1058 (let* ((list (gnus-parse-netrc nntp-authinfo-file)) 1059 (alist (gnus-netrc-machine list nntp-address "nntp")) 1060 (force (gnus-netrc-get alist "force")) 1061 (user (or (gnus-netrc-get alist "login") nntp-authinfo-user)) 1062 (passwd (gnus-netrc-get alist "password"))) 1063 (when (or (not send-if-force) 1064 force) 1065 (unless user 1066 (setq user (read-string (format "NNTP (%s) user name: " nntp-address)) 1067 nntp-authinfo-user user)) 1068 (unless (member user '(nil "")) 1069 (nntp-send-command "^3.*\r?\n" "AUTHINFO USER" user) 1070 (when t ;???Should check if AUTHINFO succeeded 1071 (nntp-send-command 1072 "^2.*\r?\n" "AUTHINFO PASS" 1073 (or passwd 1074 nntp-authinfo-password 1075 (setq nntp-authinfo-password 1076 (read-passwd (format "NNTP (%s@%s) password: " 1077 user nntp-address)))))))))) 1078 1079(defun nntp-send-nosy-authinfo () 1080 "Send the AUTHINFO to the nntp server." 1081 (let ((user (read-string (format "NNTP (%s) user name: " nntp-address)))) 1082 (unless (member user '(nil "")) 1083 (nntp-send-command "^3.*\r?\n" "AUTHINFO USER" user) 1084 (when t ;???Should check if AUTHINFO succeeded 1085 (nntp-send-command "^2.*\r?\n" "AUTHINFO PASS" 1086 (read-passwd (format "NNTP (%s@%s) password: " 1087 user nntp-address))))))) 1088 1089(defun nntp-send-authinfo-from-file () 1090 "Send the AUTHINFO to the nntp server. 1091 1092The authinfo login name is taken from the user's login name and the 1093password contained in '~/.nntp-authinfo'." 1094 (when (file-exists-p "~/.nntp-authinfo") 1095 (with-temp-buffer 1096 (insert-file-contents "~/.nntp-authinfo") 1097 (goto-char (point-min)) 1098 (nntp-send-command "^3.*\r?\n" "AUTHINFO USER" (user-login-name)) 1099 (nntp-send-command 1100 "^2.*\r?\n" "AUTHINFO PASS" 1101 (buffer-substring (point) (gnus-point-at-eol)))))) 1102 1103;;; Internal functions. 1104 1105(defun nntp-handle-authinfo (process) 1106 "Take care of an authinfo response from the server." 1107 (let ((last nntp-last-command)) 1108 (funcall nntp-authinfo-function) 1109 ;; We have to re-send the function that was interrupted by 1110 ;; the authinfo request. 1111 (save-excursion 1112 (set-buffer nntp-server-buffer) 1113 (erase-buffer)) 1114 (nntp-send-string process last))) 1115 1116(defun nntp-make-process-buffer (buffer) 1117 "Create a new, fresh buffer usable for nntp process connections." 1118 (save-excursion 1119 (set-buffer 1120 (generate-new-buffer 1121 (format " *server %s %s %s*" 1122 nntp-address nntp-port-number 1123 (gnus-buffer-exists-p buffer)))) 1124 (mm-enable-multibyte) 1125 (set (make-local-variable 'after-change-functions) nil) 1126 (set (make-local-variable 'nntp-process-wait-for) nil) 1127 (set (make-local-variable 'nntp-process-callback) nil) 1128 (set (make-local-variable 'nntp-process-to-buffer) nil) 1129 (set (make-local-variable 'nntp-process-start-point) nil) 1130 (set (make-local-variable 'nntp-process-decode) nil) 1131 (current-buffer))) 1132 1133(defun nntp-open-connection (buffer) 1134 "Open a connection to PORT on ADDRESS delivering output to BUFFER." 1135 (run-hooks 'nntp-prepare-server-hook) 1136 (let* ((pbuffer (nntp-make-process-buffer buffer)) 1137 (timer 1138 (and nntp-connection-timeout 1139 (nnheader-run-at-time 1140 nntp-connection-timeout nil 1141 `(lambda () 1142 (nntp-kill-buffer ,pbuffer))))) 1143 (process 1144 (condition-case () 1145 (let ((coding-system-for-read nntp-coding-system-for-read) 1146 (coding-system-for-write nntp-coding-system-for-write)) 1147 (funcall nntp-open-connection-function pbuffer)) 1148 (error nil) 1149 (quit 1150 (message "Quit opening connection") 1151 (nntp-kill-buffer pbuffer) 1152 (signal 'quit nil) 1153 nil)))) 1154 (when timer 1155 (nnheader-cancel-timer timer)) 1156 (unless process 1157 (nntp-kill-buffer pbuffer)) 1158 (when (and (buffer-name pbuffer) 1159 process) 1160 (gnus-set-process-query-on-exit-flag process nil) 1161 (if (and (nntp-wait-for process "^2.*\n" buffer nil t) 1162 (memq (process-status process) '(open run))) 1163 (prog1 1164 (caar (push (list process buffer nil) nntp-connection-alist)) 1165 (push process nntp-connection-list) 1166 (save-excursion 1167 (set-buffer pbuffer) 1168 (nntp-read-server-type) 1169 (erase-buffer) 1170 (set-buffer nntp-server-buffer) 1171 (let ((nnheader-callback-function nil)) 1172 (run-hooks 'nntp-server-opened-hook) 1173 (nntp-send-authinfo t)))) 1174 (nntp-kill-buffer (process-buffer process)) 1175 nil)))) 1176 1177(defun nntp-open-network-stream (buffer) 1178 (open-network-stream "nntpd" buffer nntp-address nntp-port-number)) 1179 1180(eval-and-compile 1181 (autoload 'format-spec "format-spec") 1182 (autoload 'format-spec-make "format-spec") 1183 (autoload 'open-tls-stream "tls")) 1184 1185(defun nntp-open-ssl-stream (buffer) 1186 (let* ((process-connection-type nil) 1187 (proc (start-process "nntpd" buffer 1188 shell-file-name 1189 shell-command-switch 1190 (format-spec nntp-ssl-program 1191 (format-spec-make 1192 ?s nntp-address 1193 ?p nntp-port-number))))) 1194 (gnus-set-process-query-on-exit-flag proc nil) 1195 (save-excursion 1196 (set-buffer buffer) 1197 (let ((nntp-connection-alist (list proc buffer nil))) 1198 (nntp-wait-for-string "^\r*20[01]")) 1199 (beginning-of-line) 1200 (delete-region (point-min) (point)) 1201 proc))) 1202 1203(defun nntp-open-tls-stream (buffer) 1204 (let ((proc (open-tls-stream "nntpd" buffer nntp-address nntp-port-number))) 1205 (gnus-set-process-query-on-exit-flag proc nil) 1206 (save-excursion 1207 (set-buffer buffer) 1208 (let ((nntp-connection-alist (list proc buffer nil))) 1209 (nntp-wait-for-string "^\r*20[01]")) 1210 (beginning-of-line) 1211 (delete-region (point-min) (point)) 1212 proc))) 1213 1214(defun nntp-read-server-type () 1215 "Find out what the name of the server we have connected to is." 1216 ;; Wait for the status string to arrive. 1217 (setq nntp-server-type (buffer-string)) 1218 (let ((alist nntp-server-action-alist) 1219 (case-fold-search t) 1220 entry) 1221 ;; Run server-specific commands. 1222 (while alist 1223 (setq entry (pop alist)) 1224 (when (string-match (car entry) nntp-server-type) 1225 (if (and (listp (cadr entry)) 1226 (not (eq 'lambda (caadr entry)))) 1227 (eval (cadr entry)) 1228 (funcall (cadr entry))))))) 1229 1230(defun nntp-async-wait (process wait-for buffer decode callback) 1231 (save-excursion 1232 (set-buffer (process-buffer process)) 1233 (unless nntp-inside-change-function 1234 (erase-buffer)) 1235 (setq nntp-process-wait-for wait-for 1236 nntp-process-to-buffer buffer 1237 nntp-process-decode decode 1238 nntp-process-callback callback 1239 nntp-process-start-point (point-max)) 1240 (setq after-change-functions '(nntp-after-change-function)) 1241 (if nntp-async-needs-kluge 1242 (nntp-async-kluge process)))) 1243 1244(defun nntp-async-kluge (process) 1245 ;; emacs 20.3 bug: process output with encoding 'binary 1246 ;; doesn't trigger after-change-functions. 1247 (unless nntp-async-timer 1248 (setq nntp-async-timer 1249 (nnheader-run-at-time 1 1 'nntp-async-timer-handler))) 1250 (add-to-list 'nntp-async-process-list process)) 1251 1252(defun nntp-async-timer-handler () 1253 (mapcar 1254 (lambda (proc) 1255 (if (memq (process-status proc) '(open run)) 1256 (nntp-async-trigger proc) 1257 (nntp-async-stop proc))) 1258 nntp-async-process-list)) 1259 1260(defun nntp-async-stop (proc) 1261 (setq nntp-async-process-list (delq proc nntp-async-process-list)) 1262 (when (and nntp-async-timer (not nntp-async-process-list)) 1263 (nnheader-cancel-timer nntp-async-timer) 1264 (setq nntp-async-timer nil))) 1265 1266(defun nntp-after-change-function (beg end len) 1267 (unwind-protect 1268 ;; we only care about insertions at eob 1269 (when (and (eq 0 len) (eq (point-max) end)) 1270 (save-match-data 1271 (let ((proc (get-buffer-process (current-buffer)))) 1272 (when proc 1273 (nntp-async-trigger proc))))) 1274 ;; any throw from after-change-functions will leave it 1275 ;; set to nil. so we reset it here, if necessary. 1276 (when quit-flag 1277 (setq after-change-functions '(nntp-after-change-function))))) 1278 1279(defun nntp-async-trigger (process) 1280 (save-excursion 1281 (set-buffer (process-buffer process)) 1282 (when nntp-process-callback 1283 ;; do we have an error message? 1284 (goto-char nntp-process-start-point) 1285 (if (memq (following-char) '(?4 ?5)) 1286 ;; wants credentials? 1287 (if (looking-at "480") 1288 (nntp-handle-authinfo process) 1289 ;; report error message. 1290 (nntp-snarf-error-message) 1291 (nntp-do-callback nil)) 1292 1293 ;; got what we expect? 1294 (goto-char (point-max)) 1295 (when (re-search-backward 1296 nntp-process-wait-for nntp-process-start-point t) 1297 (let ((response (match-string 0))) 1298 (with-current-buffer nntp-server-buffer 1299 (setq nntp-process-response response))) 1300 (nntp-async-stop process) 1301 ;; convert it. 1302 (when (gnus-buffer-exists-p nntp-process-to-buffer) 1303 (let ((buf (current-buffer)) 1304 (start nntp-process-start-point) 1305 (decode nntp-process-decode)) 1306 (save-excursion 1307 (set-buffer nntp-process-to-buffer) 1308 (goto-char (point-max)) 1309 (save-restriction 1310 (narrow-to-region (point) (point)) 1311 (insert-buffer-substring buf start) 1312 (when decode 1313 (nntp-decode-text)))))) 1314 ;; report it. 1315 (goto-char (point-max)) 1316 (nntp-do-callback 1317 (buffer-name (get-buffer nntp-process-to-buffer)))))))) 1318 1319(defun nntp-do-callback (arg) 1320 (let ((callback nntp-process-callback) 1321 (nntp-inside-change-function t)) 1322 (setq nntp-process-callback nil) 1323 (funcall callback arg))) 1324 1325(defun nntp-snarf-error-message () 1326 "Save the error message in the current buffer." 1327 (let ((message (buffer-string))) 1328 (while (string-match "[\r\n]+" message) 1329 (setq message (replace-match " " t t message))) 1330 (nnheader-report 'nntp message) 1331 message)) 1332 1333(defun nntp-accept-process-output (process) 1334 "Wait for output from PROCESS and message some dots." 1335 (save-excursion 1336 (set-buffer (or (nntp-find-connection-buffer nntp-server-buffer) 1337 nntp-server-buffer)) 1338 (let ((len (/ (buffer-size) 1024)) 1339 message-log-max) 1340 (unless (< len 10) 1341 (setq nntp-have-messaged t) 1342 (nnheader-message 7 "nntp read: %dk" len))) 1343 (nnheader-accept-process-output process) 1344 ;; accept-process-output may update status of process to indicate 1345 ;; that the server has closed the connection. This MUST be 1346 ;; handled here as the buffer restored by the save-excursion may 1347 ;; be the process's former output buffer (i.e. now killed) 1348 (or (and process 1349 (memq (process-status process) '(open run))) 1350 (nntp-report "Server closed connection")))) 1351 1352(defun nntp-accept-response () 1353 "Wait for output from the process that outputs to BUFFER." 1354 (nntp-accept-process-output (nntp-find-connection nntp-server-buffer))) 1355 1356(defun nntp-possibly-change-group (group server &optional connectionless) 1357 (let ((nnheader-callback-function nil)) 1358 (when server 1359 (or (nntp-server-opened server) 1360 (nntp-open-server server nil connectionless))) 1361 1362 (unless connectionless 1363 (or (nntp-find-connection nntp-server-buffer) 1364 (nntp-open-connection nntp-server-buffer)))) 1365 1366 (when group 1367 (let ((entry (nntp-find-connection-entry nntp-server-buffer))) 1368 (cond ((not entry) 1369 (nntp-report "Server closed connection")) 1370 ((not (equal group (caddr entry))) 1371 (save-excursion 1372 (set-buffer (process-buffer (car entry))) 1373 (erase-buffer) 1374 (nntp-send-command "^[245].*\n" "GROUP" group) 1375 (setcar (cddr entry) group) 1376 (erase-buffer) 1377 (save-excursion 1378 (set-buffer nntp-server-buffer) 1379 (erase-buffer)))))))) 1380 1381(defun nntp-decode-text (&optional cr-only) 1382 "Decode the text in the current buffer." 1383 (goto-char (point-min)) 1384 (while (search-forward "\r" nil t) 1385 (delete-char -1)) 1386 (unless cr-only 1387 ;; Remove trailing ".\n" end-of-transfer marker. 1388 (goto-char (point-max)) 1389 (forward-line -1) 1390 (when (looking-at ".\n") 1391 (delete-char 2)) 1392 ;; Delete status line. 1393 (goto-char (point-min)) 1394 (while (looking-at "[1-5][0-9][0-9] .*\n") 1395 ;; For some unknown reason, there is more than one status line. 1396 (delete-region (point) (progn (forward-line 1) (point)))) 1397 ;; Remove "." -> ".." encoding. 1398 (while (search-forward "\n.." nil t) 1399 (delete-char -1)))) 1400 1401(defun nntp-encode-text () 1402 "Encode the text in the current buffer." 1403 (save-excursion 1404 ;; Replace "." at beginning of line with "..". 1405 (goto-char (point-min)) 1406 (while (re-search-forward "^\\." nil t) 1407 (insert ".")) 1408 (goto-char (point-max)) 1409 ;; Insert newline at the end of the buffer. 1410 (unless (bolp) 1411 (insert "\n")) 1412 ;; Insert `.' at end of buffer (end of text mark). 1413 (goto-char (point-max)) 1414 (insert ".\n") 1415 (goto-char (point-min)) 1416 (while (not (eobp)) 1417 (end-of-line) 1418 (delete-char 1) 1419 (insert nntp-end-of-line)))) 1420 1421(defun nntp-retrieve-headers-with-xover (articles &optional fetch-old) 1422 (set-buffer nntp-server-buffer) 1423 (erase-buffer) 1424 (cond 1425 1426 ;; This server does not talk NOV. 1427 ((not nntp-server-xover) 1428 nil) 1429 1430 ;; We don't care about gaps. 1431 ((or (not nntp-nov-gap) 1432 fetch-old) 1433 (nntp-send-xover-command 1434 (if fetch-old 1435 (if (numberp fetch-old) 1436 (max 1 (- (car articles) fetch-old)) 1437 1) 1438 (car articles)) 1439 (car (last articles)) 'wait) 1440 1441 (goto-char (point-min)) 1442 (when (looking-at "[1-5][0-9][0-9] .*\n") 1443 (delete-region (point) (progn (forward-line 1) (point)))) 1444 (while (search-forward "\r" nil t) 1445 (replace-match "" t t)) 1446 (goto-char (point-max)) 1447 (forward-line -1) 1448 (when (looking-at "\\.") 1449 (delete-region (point) (progn (forward-line 1) (point))))) 1450 1451 ;; We do it the hard way. For each gap, an XOVER command is sent 1452 ;; to the server. We do not wait for a reply from the server, we 1453 ;; just send them off as fast as we can. That means that we have 1454 ;; to count the number of responses we get back to find out when we 1455 ;; have gotten all we asked for. 1456 ((numberp nntp-nov-gap) 1457 (let ((count 0) 1458 (received 0) 1459 last-point 1460 in-process-buffer-p 1461 (buf nntp-server-buffer) 1462 (process-buffer (nntp-find-connection-buffer nntp-server-buffer)) 1463 first last status) 1464 ;; We have to check `nntp-server-xover'. If it gets set to nil, 1465 ;; that means that the server does not understand XOVER, but we 1466 ;; won't know that until we try. 1467 (while (and nntp-server-xover articles) 1468 (setq first (car articles)) 1469 ;; Search forward until we find a gap, or until we run out of 1470 ;; articles. 1471 (while (and (cdr articles) 1472 (< (- (nth 1 articles) (car articles)) nntp-nov-gap)) 1473 (setq articles (cdr articles))) 1474 1475 (setq in-process-buffer-p (stringp nntp-server-xover)) 1476 (nntp-send-xover-command first (setq last (car articles))) 1477 (setq articles (cdr articles)) 1478 1479 (when (and nntp-server-xover in-process-buffer-p) 1480 ;; Don't count tried request. 1481 (setq count (1+ count)) 1482 1483 ;; Every 400 requests we have to read the stream in 1484 ;; order to avoid deadlocks. 1485 (when (or (null articles) ;All requests have been sent. 1486 (= 1 (% count nntp-maximum-request))) 1487 1488 (nntp-accept-response) 1489 ;; On some Emacs versions the preceding function has a 1490 ;; tendency to change the buffer. Perhaps. It's quite 1491 ;; difficult to reproduce, because it only seems to happen 1492 ;; once in a blue moon. 1493 (set-buffer process-buffer) 1494 (while (progn 1495 (goto-char (or last-point (point-min))) 1496 ;; Count replies. 1497 (while (re-search-forward "^\\([0-9][0-9][0-9]\\) .*\n" 1498 nil t) 1499 (incf received) 1500 (setq status (match-string 1)) 1501 (if (string-match "^[45]" status) 1502 (setq status 'error) 1503 (setq status 'ok))) 1504 (setq last-point (point)) 1505 (or (< received count) 1506 (if (eq status 'error) 1507 nil 1508 ;; I haven't started reading the final response 1509 (progn 1510 (goto-char (point-max)) 1511 (forward-line -1) 1512 (not (looking-at "^\\.\r?\n")))))) 1513 ;; I haven't read the end of the final response 1514 (nntp-accept-response) 1515 (set-buffer process-buffer)))) 1516 1517 ;; Some nntp servers seem to have an extension to the XOVER 1518 ;; extension. On these servers, requesting an article range 1519 ;; preceeding the active range does not return an error as 1520 ;; specified in the RFC. What we instead get is the NOV entry 1521 ;; for the first available article. Obviously, a client can 1522 ;; use that entry to avoid making unnecessary requests. The 1523 ;; only problem is for a client that assumes that the response 1524 ;; will always be within the requested ranage. For such a 1525 ;; client, we can get N copies of the same entry (one for each 1526 ;; XOVER command sent to the server). 1527 1528 (when (<= count 1) 1529 (goto-char (point-min)) 1530 (when (re-search-forward "^[0-9][0-9][0-9] .*\n\\([0-9]+\\)" nil t) 1531 (let ((low-limit (string-to-number 1532 (buffer-substring (match-beginning 1) 1533 (match-end 1))))) 1534 (while (and articles (<= (car articles) low-limit)) 1535 (setq articles (cdr articles)))))) 1536 (set-buffer buf)) 1537 1538 (when nntp-server-xover 1539 (when in-process-buffer-p 1540 (set-buffer buf) 1541 (goto-char (point-max)) 1542 (insert-buffer-substring process-buffer) 1543 (set-buffer process-buffer) 1544 (erase-buffer) 1545 (set-buffer buf)) 1546 1547 ;; We remove any "." lines and status lines. 1548 (goto-char (point-min)) 1549 (while (search-forward "\r" nil t) 1550 (delete-char -1)) 1551 (goto-char (point-min)) 1552 (delete-matching-lines "^\\.$\\|^[1-5][0-9][0-9] ") 1553 t)))) 1554 1555 nntp-server-xover) 1556 1557(defun nntp-send-xover-command (beg end &optional wait-for-reply) 1558 "Send the XOVER command to the server." 1559 (let ((range (format "%d-%d" beg end)) 1560 (nntp-inhibit-erase t)) 1561 (if (stringp nntp-server-xover) 1562 ;; If `nntp-server-xover' is a string, then we just send this 1563 ;; command. 1564 (if wait-for-reply 1565 (nntp-send-command-nodelete 1566 "\r?\n\\.\r?\n" nntp-server-xover range) 1567 ;; We do not wait for the reply. 1568 (nntp-send-command-nodelete nil nntp-server-xover range)) 1569 (let ((commands nntp-xover-commands)) 1570 ;; `nntp-xover-commands' is a list of possible XOVER commands. 1571 ;; We try them all until we get at positive response. 1572 (while (and commands (eq nntp-server-xover 'try)) 1573 (nntp-send-command-nodelete "\r?\n\\.\r?\n" (car commands) range) 1574 (save-excursion 1575 (set-buffer nntp-server-buffer) 1576 (goto-char (point-min)) 1577 (and (looking-at "[23]") ; No error message. 1578 ;; We also have to look at the lines. Some buggy 1579 ;; servers give back simple lines with just the 1580 ;; article number. How... helpful. 1581 (progn 1582 (forward-line 1) 1583 (looking-at "[0-9]+\t...")) ; More text after number. 1584 (setq nntp-server-xover (car commands)))) 1585 (setq commands (cdr commands))) 1586 ;; If none of the commands worked, we disable XOVER. 1587 (when (eq nntp-server-xover 'try) 1588 (save-excursion 1589 (set-buffer nntp-server-buffer) 1590 (erase-buffer) 1591 (setq nntp-server-xover nil))) 1592 nntp-server-xover)))) 1593 1594(defun nntp-find-group-and-number (&optional group) 1595 (save-excursion 1596 (save-restriction 1597 (set-buffer nntp-server-buffer) 1598 (narrow-to-region (goto-char (point-min)) 1599 (or (search-forward "\n\n" nil t) (point-max))) 1600 (goto-char (point-min)) 1601 ;; We first find the number by looking at the status line. 1602 (let ((number (and (looking-at "2[0-9][0-9] +\\([0-9]+\\) ") 1603 (string-to-number 1604 (buffer-substring (match-beginning 1) 1605 (match-end 1))))) 1606 newsgroups xref) 1607 (and number (zerop number) (setq number nil)) 1608 (if number 1609 ;; Then we find the group name. 1610 (setq group 1611 (cond 1612 ;; If there is only one group in the Newsgroups 1613 ;; header, then it seems quite likely that this 1614 ;; article comes from that group, I'd say. 1615 ((and (setq newsgroups 1616 (mail-fetch-field "newsgroups")) 1617 (not (string-match "," newsgroups))) 1618 newsgroups) 1619 ;; If there is more than one group in the 1620 ;; Newsgroups header, then the Xref header should 1621 ;; be filled out. We hazard a guess that the group 1622 ;; that has this article number in the Xref header 1623 ;; is the one we are looking for. This might very 1624 ;; well be wrong if this article happens to have 1625 ;; the same number in several groups, but that's 1626 ;; life. 1627 ((and (setq xref (mail-fetch-field "xref")) 1628 number 1629 (string-match 1630 (format "\\([^ :]+\\):%d" number) xref)) 1631 (match-string 1 xref)) 1632 (t ""))) 1633 (cond 1634 ((and (setq xref (mail-fetch-field "xref")) 1635 (string-match 1636 (if group 1637 (concat "\\(" (regexp-quote group) "\\):\\([0-9]+\\)") 1638 "\\([^ :]+\\):\\([0-9]+\\)") 1639 xref)) 1640 (setq group (match-string 1 xref) 1641 number (string-to-number (match-string 2 xref)))) 1642 ((and (setq newsgroups 1643 (mail-fetch-field "newsgroups")) 1644 (not (string-match "," newsgroups))) 1645 (setq group newsgroups)) 1646 (group) 1647 (t (setq group "")))) 1648 (when (string-match "\r" group) 1649 (setq group (substring group 0 (match-beginning 0)))) 1650 (cons group number))))) 1651 1652(defun nntp-wait-for-string (regexp) 1653 "Wait until string arrives in the buffer." 1654 (let ((buf (current-buffer)) 1655 proc) 1656 (goto-char (point-min)) 1657 (while (and (setq proc (get-buffer-process buf)) 1658 (memq (process-status proc) '(open run)) 1659 (not (re-search-forward regexp nil t))) 1660 (accept-process-output proc) 1661 (set-buffer buf) 1662 (goto-char (point-min))))) 1663 1664 1665;; ========================================================================== 1666;; Obsolete nntp-open-* connection methods -- drv 1667;; ========================================================================== 1668 1669(defvoo nntp-open-telnet-envuser nil 1670 "*If non-nil, telnet session (client and server both) will support the ENVIRON option and not prompt for login name.") 1671 1672(defvoo nntp-telnet-shell-prompt "bash\\|\$ *\r?$\\|> *\r?" 1673 "*Regular expression to match the shell prompt on the remote machine.") 1674 1675(defvoo nntp-rlogin-program "rsh" 1676 "*Program used to log in on remote machines. 1677The default is \"rsh\", but \"ssh\" is a popular alternative.") 1678 1679(defvoo nntp-rlogin-parameters '("telnet" "-8" "${NNTPSERVER:=news}" "nntp") 1680 "*Parameters to `nntp-open-rlogin'. 1681That function may be used as `nntp-open-connection-function'. In that 1682case, this list will be used as the parameter list given to rsh.") 1683 1684(defvoo nntp-rlogin-user-name nil 1685 "*User name on remote system when using the rlogin connect method.") 1686 1687(defvoo nntp-telnet-parameters 1688 '("exec" "telnet" "-8" "${NNTPSERVER:=news}" "nntp") 1689 "*Parameters to `nntp-open-telnet'. 1690That function may be used as `nntp-open-connection-function'. In that 1691case, this list will be executed as a command after logging in 1692via telnet.") 1693 1694(defvoo nntp-telnet-user-name nil 1695 "User name to log in via telnet with.") 1696 1697(defvoo nntp-telnet-passwd nil 1698 "Password to use to log in via telnet with.") 1699 1700(defun nntp-open-telnet (buffer) 1701 (save-excursion 1702 (set-buffer buffer) 1703 (erase-buffer) 1704 (let ((proc (apply 1705 'start-process 1706 "nntpd" buffer nntp-telnet-command nntp-telnet-switches)) 1707 (case-fold-search t)) 1708 (when (memq (process-status proc) '(open run)) 1709 (nntp-wait-for-string "^r?telnet") 1710 (process-send-string proc "set escape \^X\n") 1711 (cond 1712 ((and nntp-open-telnet-envuser nntp-telnet-user-name) 1713 (process-send-string proc (concat "open " "-l" nntp-telnet-user-name 1714 nntp-address "\n"))) 1715 (t 1716 (process-send-string proc (concat "open " nntp-address "\n")))) 1717 (cond 1718 ((not nntp-open-telnet-envuser) 1719 (nntp-wait-for-string "^\r*.?login:") 1720 (process-send-string 1721 proc (concat 1722 (or nntp-telnet-user-name 1723 (setq nntp-telnet-user-name (read-string "login: "))) 1724 "\n")))) 1725 (nntp-wait-for-string "^\r*.?password:") 1726 (process-send-string 1727 proc (concat 1728 (or nntp-telnet-passwd 1729 (setq nntp-telnet-passwd 1730 (read-passwd "Password: "))) 1731 "\n")) 1732 (nntp-wait-for-string nntp-telnet-shell-prompt) 1733 (process-send-string 1734 proc (concat (mapconcat 'identity nntp-telnet-parameters " ") "\n")) 1735 (nntp-wait-for-string "^\r*20[01]") 1736 (beginning-of-line) 1737 (delete-region (point-min) (point)) 1738 (process-send-string proc "\^]") 1739 (nntp-wait-for-string "^r?telnet") 1740 (process-send-string proc "mode character\n") 1741 (accept-process-output proc 1) 1742 (sit-for 1) 1743 (goto-char (point-min)) 1744 (forward-line 1) 1745 (delete-region (point) (point-max))) 1746 proc))) 1747 1748(defun nntp-open-rlogin (buffer) 1749 "Open a connection to SERVER using rsh." 1750 (let ((proc (if nntp-rlogin-user-name 1751 (apply 'start-process 1752 "nntpd" buffer nntp-rlogin-program 1753 nntp-address "-l" nntp-rlogin-user-name 1754 nntp-rlogin-parameters) 1755 (apply 'start-process 1756 "nntpd" buffer nntp-rlogin-program nntp-address 1757 nntp-rlogin-parameters)))) 1758 (save-excursion 1759 (set-buffer buffer) 1760 (nntp-wait-for-string "^\r*20[01]") 1761 (beginning-of-line) 1762 (delete-region (point-min) (point)) 1763 proc))) 1764 1765 1766;; ========================================================================== 1767;; Replacements for the nntp-open-* functions -- drv 1768;; ========================================================================== 1769 1770(defun nntp-open-telnet-stream (buffer) 1771 "Open a nntp connection by telnet'ing the news server. 1772 1773Please refer to the following variables to customize the connection: 1774- `nntp-pre-command', 1775- `nntp-telnet-command', 1776- `nntp-telnet-switches', 1777- `nntp-address', 1778- `nntp-port-number', 1779- `nntp-end-of-line'." 1780 (let ((command `(,nntp-telnet-command 1781 ,@nntp-telnet-switches 1782 ,nntp-address ,nntp-port-number)) 1783 proc) 1784 (and nntp-pre-command 1785 (push nntp-pre-command command)) 1786 (setq proc (apply 'start-process "nntpd" buffer command)) 1787 (save-excursion 1788 (set-buffer buffer) 1789 (nntp-wait-for-string "^\r*20[01]") 1790 (beginning-of-line) 1791 (delete-region (point-min) (point)) 1792 proc))) 1793 1794(defun nntp-open-via-rlogin-and-telnet (buffer) 1795 "Open a connection to an nntp server through an intermediate host. 1796First rlogin to the remote host, and then telnet the real news server 1797from there. 1798 1799Please refer to the following variables to customize the connection: 1800- `nntp-pre-command', 1801- `nntp-via-rlogin-command', 1802- `nntp-via-rlogin-command-switches', 1803- `nntp-via-user-name', 1804- `nntp-via-address', 1805- `nntp-telnet-command', 1806- `nntp-telnet-switches', 1807- `nntp-address', 1808- `nntp-port-number', 1809- `nntp-end-of-line'." 1810 (let ((command `(,nntp-via-address 1811 ,nntp-telnet-command 1812 ,@nntp-telnet-switches)) 1813 proc) 1814 (when nntp-via-user-name 1815 (setq command `("-l" ,nntp-via-user-name ,@command))) 1816 (when nntp-via-rlogin-command-switches 1817 (setq command (append nntp-via-rlogin-command-switches command))) 1818 (push nntp-via-rlogin-command command) 1819 (and nntp-pre-command 1820 (push nntp-pre-command command)) 1821 (setq proc (apply 'start-process "nntpd" buffer command)) 1822 (save-excursion 1823 (set-buffer buffer) 1824 (nntp-wait-for-string "^r?telnet") 1825 (process-send-string proc (concat "open " nntp-address 1826 " " nntp-port-number "\n")) 1827 (nntp-wait-for-string "^\r*20[01]") 1828 (beginning-of-line) 1829 (delete-region (point-min) (point)) 1830 (process-send-string proc "\^]") 1831 (nntp-wait-for-string "^r?telnet") 1832 (process-send-string proc "mode character\n") 1833 (accept-process-output proc 1) 1834 (sit-for 1) 1835 (goto-char (point-min)) 1836 (forward-line 1) 1837 (delete-region (point) (point-max))) 1838 proc)) 1839 1840(defun nntp-open-via-telnet-and-telnet (buffer) 1841 "Open a connection to an nntp server through an intermediate host. 1842First telnet the remote host, and then telnet the real news server 1843from there. 1844 1845Please refer to the following variables to customize the connection: 1846- `nntp-pre-command', 1847- `nntp-via-telnet-command', 1848- `nntp-via-telnet-switches', 1849- `nntp-via-address', 1850- `nntp-via-envuser', 1851- `nntp-via-user-name', 1852- `nntp-via-user-password', 1853- `nntp-via-shell-prompt', 1854- `nntp-telnet-command', 1855- `nntp-telnet-switches', 1856- `nntp-address', 1857- `nntp-port-number', 1858- `nntp-end-of-line'." 1859 (save-excursion 1860 (set-buffer buffer) 1861 (erase-buffer) 1862 (let ((command `(,nntp-via-telnet-command ,@nntp-via-telnet-switches)) 1863 (case-fold-search t) 1864 proc) 1865 (and nntp-pre-command (push nntp-pre-command command)) 1866 (setq proc (apply 'start-process "nntpd" buffer command)) 1867 (when (memq (process-status proc) '(open run)) 1868 (nntp-wait-for-string "^r?telnet") 1869 (process-send-string proc "set escape \^X\n") 1870 (cond 1871 ((and nntp-via-envuser nntp-via-user-name) 1872 (process-send-string proc (concat "open " "-l" nntp-via-user-name 1873 nntp-via-address "\n"))) 1874 (t 1875 (process-send-string proc (concat "open " nntp-via-address 1876 "\n")))) 1877 (when (not nntp-via-envuser) 1878 (nntp-wait-for-string "^\r*.?login:") 1879 (process-send-string proc 1880 (concat 1881 (or nntp-via-user-name 1882 (setq nntp-via-user-name 1883 (read-string "login: "))) 1884 "\n"))) 1885 (nntp-wait-for-string "^\r*.?password:") 1886 (process-send-string proc 1887 (concat 1888 (or nntp-via-user-password 1889 (setq nntp-via-user-password 1890 (read-passwd "Password: "))) 1891 "\n")) 1892 (nntp-wait-for-string nntp-via-shell-prompt) 1893 (let ((real-telnet-command `("exec" 1894 ,nntp-telnet-command 1895 ,@nntp-telnet-switches 1896 ,nntp-address 1897 ,nntp-port-number))) 1898 (process-send-string proc 1899 (concat (mapconcat 'identity 1900 real-telnet-command " ") 1901 "\n"))) 1902 (nntp-wait-for-string "^\r*20[01]") 1903 (beginning-of-line) 1904 (delete-region (point-min) (point)) 1905 (process-send-string proc "\^]") 1906 (nntp-wait-for-string "^r?telnet") 1907 (process-send-string proc "mode character\n") 1908 (accept-process-output proc 1) 1909 (sit-for 1) 1910 (goto-char (point-min)) 1911 (forward-line 1) 1912 (delete-region (point) (point-max))) 1913 proc))) 1914 1915(provide 'nntp) 1916 1917;;; arch-tag: 8655466a-b1b5-4929-9c45-7b1b2e767271 1918;;; nntp.el ends here 1919