xref: /386bsd/usr/local/lib/emacs/19.25/lisp/gnuspost.el (revision a2142627)
1;;; gnuspost.el --- post news commands for GNUS newsreader
2
3;; Copyright (C) 1989, 1990, 1993, 1994 Free Software Foundation, Inc.
4
5;; Author: Masanobu UMEDA <umerin@flab.flab.fujitsu.junet>
6;; Keywords: news
7
8;; This file is part of GNU Emacs.
9
10;; GNU Emacs is free software; you can redistribute it and/or modify
11;; it under the terms of the GNU General Public License as published by
12;; the Free Software Foundation; either version 2, or (at your option)
13;; any later version.
14
15;; GNU Emacs is distributed in the hope that it will be useful,
16;; but WITHOUT ANY WARRANTY; without even the implied warranty of
17;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
18;; GNU General Public License for more details.
19
20;; You should have received a copy of the GNU General Public License
21;; along with GNU Emacs; see the file COPYING.  If not, write to
22;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
23
24;;; Code:
25
26(require 'gnus)
27
28(defvar gnus-organization-file "/usr/lib/news/organization"
29  "*Local news organization file.")
30
31(defvar gnus-post-news-buffer "*post-news*")
32(defvar gnus-winconf-post-news nil)
33
34(autoload 'news-reply-mode "rnewspost")
35(autoload 'timezone-make-date-arpa-standard "timezone")
36
37;;; Post news commands of GNUS Group Mode and Summary Mode
38
39(defun gnus-group-post-news ()
40  "Post an article."
41  (interactive)
42  ;; Save window configuration.
43  (setq gnus-winconf-post-news (current-window-configuration))
44  (unwind-protect
45      (gnus-post-news)
46    (or (and (eq (current-buffer) (get-buffer gnus-post-news-buffer))
47	     (not (zerop (buffer-size))))
48	;; Restore last window configuration.
49	(set-window-configuration gnus-winconf-post-news)))
50  ;; We don't want to return to Summary buffer nor Article buffer later.
51  (if (get-buffer gnus-summary-buffer)
52      (bury-buffer gnus-summary-buffer))
53  (if (get-buffer gnus-article-buffer)
54      (bury-buffer gnus-article-buffer)))
55
56(defun gnus-summary-post-news ()
57  "Post an article."
58  (interactive)
59  (gnus-summary-select-article t nil)
60  ;; Save window configuration.
61  (setq gnus-winconf-post-news (current-window-configuration))
62  (unwind-protect
63      (progn
64	(switch-to-buffer gnus-article-buffer)
65	(widen)
66	(delete-other-windows)
67	(gnus-post-news))
68    (or (and (eq (current-buffer) (get-buffer gnus-post-news-buffer))
69	     (not (zerop (buffer-size))))
70	;; Restore last window configuration.
71	(set-window-configuration gnus-winconf-post-news)))
72  ;; We don't want to return to Article buffer later.
73  (bury-buffer gnus-article-buffer))
74
75(defun gnus-summary-followup (yank)
76  "Post a reply article.
77If prefix argument YANK is non-nil, original article is yanked automatically."
78  (interactive "P")
79  (gnus-summary-select-article t nil)
80  ;; Check Followup-To: poster.
81  (set-buffer gnus-article-buffer)
82  (if (and gnus-use-followup-to
83	   (string-equal "poster" (gnus-fetch-field "followup-to"))
84	   (or (not (eq gnus-use-followup-to t))
85	       (not (y-or-n-p "Do you want to ignore `Followup-To: poster'? "))))
86      ;; Mail to the poster.  GNUS is now RFC1036 compliant.
87      (gnus-summary-reply yank)
88    ;; Save window configuration.
89    (setq gnus-winconf-post-news (current-window-configuration))
90    (unwind-protect
91	(progn
92	  (switch-to-buffer gnus-article-buffer)
93	  (widen)
94	  (delete-other-windows)
95	  (gnus-news-reply yank))
96      (or (and (eq (current-buffer) (get-buffer gnus-post-news-buffer))
97	       (not (zerop (buffer-size))))
98	  ;; Restore last window configuration.
99	  (set-window-configuration gnus-winconf-post-news)))
100    ;; We don't want to return to Article buffer later.
101    (bury-buffer gnus-article-buffer)))
102
103(defun gnus-summary-followup-with-original ()
104  "Post a reply article with original article."
105  (interactive)
106  (gnus-summary-followup t))
107
108(defun gnus-summary-cancel-article ()
109  "Cancel an article you posted."
110  (interactive)
111  (gnus-summary-select-article t nil)
112  (gnus-eval-in-buffer-window gnus-article-buffer
113    (gnus-cancel-news)))
114
115
116;;; Post a News using NNTP
117
118;;;###autoload
119(fset 'sendnews 'gnus-post-news)
120
121;;;###autoload
122(fset 'postnews 'gnus-post-news)
123
124;;;###autoload
125(defun gnus-post-news ()
126  "Begin editing a new USENET news article to be posted.
127Type \\[describe-mode] once editing the article to get a list of commands."
128  (interactive)
129  (if (or (not gnus-novice-user)
130	  (y-or-n-p "Are you sure you want to post to all of USENET? "))
131      (let ((artbuf (current-buffer))
132	    (newsgroups			;Default newsgroup.
133	     (if (eq major-mode 'gnus-article-mode) gnus-newsgroup-name))
134	    (subject nil)
135	    ;; Get default distribution.
136	    (distribution (car gnus-local-distributions))
137	    (followup-to nil))
138	;; Connect to NNTP server if not connected yet, and get
139	;; several information.
140	(if (not (gnus-server-opened))
141	    (progn
142	      (gnus-start-news-server t) ;Confirm server.
143	      (gnus-setup-news)))
144	;; Get current article information.
145	(save-restriction
146	  (and (not (zerop (buffer-size)))
147	       ;;(equal major-mode 'news-mode)
148	       (equal major-mode 'gnus-article-mode)
149	       (progn
150		 ;;(news-show-all-headers)
151		 (gnus-article-show-all-headers)
152		 (narrow-to-region (point-min)
153				   (progn (goto-char (point-min))
154					  (search-forward "\n\n")
155					  (point)))))
156	  (setq news-reply-yank-from (mail-fetch-field "from"))
157	  (setq news-reply-yank-message-id (mail-fetch-field "message-id")))
158	(pop-to-buffer gnus-post-news-buffer)
159	(news-reply-mode)
160	(gnus-overload-functions)
161	(if (and (buffer-modified-p)
162		 (> (buffer-size) 0)
163		 (not (y-or-n-p "Unsent article being composed; erase it? ")))
164	    ;; Continue composition.
165	    ;; Make news-reply-yank-original work on the current article.
166	    (setq mail-reply-buffer artbuf)
167	  (erase-buffer)
168	  (if gnus-interactive-post
169	      ;; Newsgroups, subject and distribution are asked for.
170	      ;; Suggested by yuki@flab.fujitsu.junet.
171	      (progn
172		;; Subscribed newsgroup names are required for
173		;; completing read of newsgroup.
174		(or gnus-newsrc-assoc
175		    (gnus-read-newsrc-file))
176		;; Which do you like? (UMERIN)
177		;; (setq newsgroups (read-string "Newsgroups: " "general"))
178		(or newsgroups		;Use the default newsgroup.
179		    (let (group)
180		      (while (not
181			      (string=
182			       (setq group
183				     (completing-read "Newsgroup: "
184						      gnus-newsrc-assoc
185						      nil 'require-match))
186			       ""))
187			(or followup-to (setq followup-to group))
188			(if newsgroups
189			    (setq newsgroups (concat newsgroups "," group))
190			  (setq newsgroups group)))))
191		(setq subject (read-string "Subject: "))
192		;; Choose a distribution from gnus-distribution-list.
193		;; completing-read should not be used with
194		;; 'require-match functionality in order to allow use
195		;; of unknow distribution.
196		(gnus-read-distributions-file)
197		(setq distribution
198		      (if (consp gnus-distribution-list)
199			  (completing-read "Distribution: "
200					   gnus-distribution-list
201					   nil nil ;Never 'require-match
202					   distribution ;Default distribution.
203					   )
204			(read-string "Distribution: ")))
205		;; Empty string is okay.
206		;;(if (string-equal distribution "")
207		;;    (setq distribution nil))
208		))
209	  (news-setup () subject () newsgroups artbuf)
210	  ;; Make sure the article is posted by GNUS.
211	  ;;(mail-position-on-field "Posting-Software")
212	  ;;(insert "GNUS: NNTP-based News Reader for GNU Emacs")
213	  ;; Insert Distribution: field.
214	  ;; Suggested by ichikawa@flab.fujitsu.junet.
215	  (mail-position-on-field "Distribution")
216	  (insert (or distribution ""))
217	  ;; Add Followup-To header
218	  (if followup-to
219	      (progn
220		(mail-position-on-field "Followup-To")
221		(insert followup-to)))
222	  ;; Handle author copy using FCC field.
223	  (if gnus-author-copy
224	      (progn
225		(mail-position-on-field "FCC")
226		(insert gnus-author-copy)))
227	  (if gnus-interactive-post
228	      ;; All fields are filled in.
229	      (goto-char (point-max))
230	    ;; Move point to Newsgroup: field.
231	    (goto-char (point-min))
232	    (end-of-line))
233	  ))
234    (message "")))
235
236(defun gnus-news-reply (&optional yank)
237  "Compose and post a reply (aka a followup) to the current article on USENET.
238While composing the followup, use \\[news-reply-yank-original] to yank the
239original message into it."
240  (interactive)
241  (if (or (not gnus-novice-user)
242	  (y-or-n-p "Are you sure you want to followup to all of USENET? "))
243      (let (from cc subject date to followup-to newsgroups message-of
244		 references distribution message-id
245		 (artbuf (current-buffer)))
246	(save-restriction
247	  (and (not (zerop (buffer-size)))
248	       ;;(equal major-mode 'news-mode)
249	       (equal major-mode 'gnus-article-mode)
250	       (progn
251		 ;; (news-show-all-headers)
252		 (gnus-article-show-all-headers)
253		 (narrow-to-region (point-min)
254				   (progn (goto-char (point-min))
255					  (search-forward "\n\n")
256					  (point)))))
257	  (setq from (mail-fetch-field "from"))
258	  ;; Get reply-to working corrrectly for gnus-auto-mail-to-author (jpm)
259	  (setq reply-to (mail-fetch-field "reply-to"))
260	  (setq	news-reply-yank-from from)
261	  (setq	subject (mail-fetch-field "subject"))
262	  (setq	date (mail-fetch-field "date"))
263	  (setq followup-to (mail-fetch-field "followup-to"))
264	  ;; Ignore Followup-To: poster.
265	  (if (or (null gnus-use-followup-to) ;Ignore followup-to: field.
266		  (string-equal "" followup-to)	;Bogus header.
267		  (string-equal "poster" followup-to))
268	      (setq followup-to nil))
269	  (setq	newsgroups (or followup-to (mail-fetch-field "newsgroups")))
270	  (setq	references (mail-fetch-field "references"))
271	  (setq	distribution (mail-fetch-field "distribution"))
272	  (setq	message-id (mail-fetch-field "message-id"))
273	  (setq	news-reply-yank-message-id message-id))
274	(pop-to-buffer gnus-post-news-buffer)
275	(news-reply-mode)
276	(gnus-overload-functions)
277	(if (and (buffer-modified-p)
278		 (> (buffer-size) 0)
279		 (not (y-or-n-p "Unsent article being composed; erase it? ")))
280	    ;; Continue composition.
281	    ;; Make news-reply-yank-original work on current article.
282	    (setq mail-reply-buffer artbuf)
283	  (erase-buffer)
284	  (and subject
285	       (setq subject
286		     (concat "Re: " (gnus-simplify-subject subject 're-only))))
287	  (and from
288	       (progn
289		 (let ((stop-pos
290			(string-match "  *at \\|  *@ \\| *(\\| *<" from)))
291		   (setq message-of
292			 (concat
293			  (if stop-pos (substring from 0 stop-pos) from)
294			  "'s message of "
295			  date)))))
296	  (news-setup nil subject message-of newsgroups artbuf)
297	  (if followup-to
298	      (progn (news-reply-followup-to)
299		     (insert followup-to)))
300	  ;; Fold long references line to follow RFC1036.
301	  (mail-position-on-field "References")
302	  (let ((begin (point))
303		(fill-column 79)
304		(fill-prefix "\t"))
305	    (if references
306		(insert references))
307	    (if (and references message-id)
308		(insert " "))
309	    (if message-id
310		(insert message-id))
311	    ;; The region must end with a newline to fill the region
312	    ;; without inserting extra newline.
313	    (fill-region-as-paragraph begin (1+ (point))))
314	  ;; Make sure the article is posted by GNUS.
315	  ;;(mail-position-on-field "Posting-Software")
316	  ;;(insert "GNUS: NNTP-based News Reader for GNU Emacs")
317	  ;; Distribution must be the same as original article.
318	  (mail-position-on-field "Distribution")
319	  (insert (or distribution ""))
320	  ;; Handle author copy using FCC field.
321	  (if gnus-author-copy
322	      (progn
323		(mail-position-on-field "FCC")
324		(insert gnus-author-copy)))
325	  ;; Insert To: FROM field, which is expected to mail the
326	  ;; message to the author of the article too.  Use Reply-To
327	  ;; field like gnus-mail-reply-using-m* (jpm).
328	  (if (and gnus-auto-mail-to-author (or reply-to from))
329	      (progn
330		(goto-char (point-min))
331		(insert "To: " (or reply-to from) "\n")))
332	  (goto-char (point-max)))
333	;; Yank original article automatically.
334	(if yank
335	    (let ((last (point)))
336	      ;;(goto-char (point-max))
337	      ;; Insert at current point.
338	      (news-reply-yank-original nil)
339	      (goto-char last)))
340	)
341    (message "")))
342
343(defun gnus-inews-news ()
344  "Send a news message."
345  (interactive)
346  (let* ((case-fold-search nil)
347	 (server-running (gnus-server-opened)))
348    (save-excursion
349      ;; Connect to default NNTP server if necessary.
350      ;; Suggested by yuki@flab.fujitsu.junet.
351      (gnus-start-news-server)		;Use default server.
352      ;; NNTP server must be opened before current buffer is modified.
353      (widen)
354      (goto-char (point-min))
355      (run-hooks 'news-inews-hook)
356      ;; Mail the message too if To: or Cc: exists.
357      (if (save-restriction
358	    (narrow-to-region
359	     (point-min)
360	     (progn
361	       (goto-char (point-min))
362	       (search-forward (concat "\n" mail-header-separator "\n"))
363	       (point)))
364	    (or (mail-fetch-field "to" nil t)
365		(mail-fetch-field "cc" nil t)))
366	  (if gnus-mail-send-method
367	      (progn
368		(message "Sending via mail...")
369		(funcall gnus-mail-send-method)
370		(message "Sending via mail... done"))
371	    (ding)
372	    (message "No mailer defined.  To: and/or Cc: fields ignored.")
373	    (sit-for 1)))
374      ;; Send to NNTP server.
375      (message "Posting to USENET...")
376      (if (gnus-inews-article)
377	  (message "Posting to USENET... done")
378	;; We cannot signal an error.
379	(ding) (message "Article rejected: %s" (gnus-status-message)))
380      (set-buffer-modified-p nil))
381    ;; If NNTP server is opened by gnus-inews-news, close it by myself.
382    (or server-running
383	(gnus-close-server))
384    (and (fboundp 'bury-buffer) (bury-buffer))
385    ;; Restore last window configuration.
386    (and gnus-winconf-post-news
387	 (set-window-configuration gnus-winconf-post-news))
388    (setq gnus-winconf-post-news nil)
389    ))
390
391(defun gnus-cancel-news ()
392  "Cancel an article you posted."
393  (interactive)
394  (if (yes-or-no-p "Do you really want to cancel this article? ")
395      (let ((from nil)
396	    (newsgroups nil)
397	    (message-id nil)
398	    (distribution nil))
399	(save-excursion
400	  ;; Get header info. from original article.
401	  (save-restriction
402	    (gnus-article-show-all-headers)
403	    (goto-char (point-min))
404	    (search-forward "\n\n" nil 'move)
405	    (narrow-to-region (point-min) (point))
406	    (setq from (mail-fetch-field "from"))
407	    (setq newsgroups (mail-fetch-field "newsgroups"))
408	    (setq message-id (mail-fetch-field "message-id"))
409	    (setq distribution (mail-fetch-field "distribution")))
410	  ;; Verify if the article is absolutely user's by comparing
411	  ;; user id with value of its From: field.
412	  (if (not
413	       (string-equal
414		(downcase (mail-strip-quoted-names from))
415		(downcase (mail-strip-quoted-names (gnus-inews-user-name)))))
416	      (progn
417		(ding) (message "This article is not yours."))
418	    ;; Make control article.
419	    (set-buffer (get-buffer-create " *GNUS-canceling*"))
420	    (buffer-flush-undo (current-buffer))
421	    (erase-buffer)
422	    (insert "Newsgroups: " newsgroups "\n"
423		    "Subject: cancel " message-id "\n"
424		    "Control: cancel " message-id "\n"
425		    ;; We should not use the first value of
426		    ;;  `gnus-distribution-list' as default value,
427		    ;;  because distribution must be as same as original
428		    ;;  article.
429		    "Distribution: " (or distribution "") "\n"
430		    mail-header-separator "\n"
431		    )
432	    ;; Send the control article to NNTP server.
433	    (message "Canceling your article...")
434	    (if (gnus-inews-article)
435		(message "Canceling your article... done")
436	      (ding) (message "Failed to cancel your article"))
437	    ;; Kill the article buffer.
438	    (kill-buffer (current-buffer))
439	    )))
440    ))
441
442
443;;; Lowlevel inews interface
444
445(defun gnus-inews-article ()
446  "Post an article in current buffer using NNTP protocol."
447  (let ((artbuf (current-buffer))
448	(tmpbuf (get-buffer-create " *GNUS-posting*")))
449    (save-excursion
450      (set-buffer tmpbuf)
451      (buffer-flush-undo (current-buffer))
452      (erase-buffer)
453      (insert-buffer-substring artbuf)
454      ;; Remove the header separator.
455      (goto-char (point-min))
456      (search-forward (concat "\n" mail-header-separator "\n"))
457      (replace-match "\n\n")
458      (goto-char (point-max))
459      ;; require a newline at the end for inews to append .signature to
460      (or (= (preceding-char) ?\n)
461	  (insert ?\n))
462      ;; This hook may insert a signature.
463      (run-hooks 'gnus-prepare-article-hook)
464      ;; Prepare article headers.  All message body such as signature
465      ;; must be inserted before Lines: field is prepared.
466      (save-restriction
467	(goto-char (point-min))
468	(search-forward "\n\n")
469	(narrow-to-region (point-min) (point))
470	(gnus-inews-insert-headers))
471      ;; Run final inews hooks.  This hook may do FCC.
472      ;; The article must be saved before being posted because
473      ;; `gnus-request-post' modifies the buffer.
474      (run-hooks 'gnus-inews-article-hook)
475      ;; Post an article to NNTP server.
476      ;; Return NIL if post failed.
477      (prog1
478	  (gnus-request-post)
479	(kill-buffer (current-buffer)))
480      )))
481
482(defun gnus-inews-insert-headers ()
483  "Prepare article headers.
484Fields already prepared in the buffer are not modified.
485Fields in gnus-required-headers will be generated."
486  (save-excursion
487    (let ((date (gnus-inews-date))
488	  (message-id (gnus-inews-message-id))
489	  (organization (gnus-inews-organization)))
490      (goto-char (point-min))
491      (or (mail-fetch-field "path")
492	  (and (memq 'Path gnus-required-headers)
493	       (insert "Path: " (gnus-inews-path) "\n")))
494      (or (mail-fetch-field "from")
495	  (and (memq 'From gnus-required-headers)
496	       (insert "From: " (gnus-inews-user-name) "\n")))
497      ;; If there is no subject, make Subject: field.
498      (or (mail-fetch-field "subject")
499	  (and (memq 'Subject gnus-required-headers)
500	       (insert "Subject: \n")))
501      ;; If there is no newsgroups, make Newsgroups: field.
502      (or (mail-fetch-field "newsgroups")
503	  (and (memq 'Newsgroups gnus-required-headers)
504	       (insert "Newsgroups: \n")))
505      (or (mail-fetch-field "message-id")
506	  (and message-id
507	       (memq 'Message-ID gnus-required-headers)
508	       (insert "Message-ID: " message-id "\n")))
509      (or (mail-fetch-field "date")
510	  (and date
511	       (memq 'Date gnus-required-headers)
512	       (insert "Date: " date "\n")))
513      ;; Optional fields in RFC977 and RFC1036
514      (or (mail-fetch-field "organization")
515	  (and organization
516	       (memq 'Organization gnus-required-headers)
517	       (let ((begin (point))
518		     (fill-column 79)
519		     (fill-prefix "\t"))
520		 (insert "Organization: " organization "\n")
521		 (fill-region-as-paragraph begin (point)))))
522      (or (mail-fetch-field "distribution")
523	  (and (memq 'Distribution gnus-required-headers)
524	       (insert "Distribution: \n")))
525      (or (mail-fetch-field "lines")
526	  (and (memq 'Lines gnus-required-headers)
527	       (insert "Lines: " (gnus-inews-lines) "\n")))
528      )))
529
530
531;; Utility functions.
532
533(defun gnus-inews-insert-signature ()
534  "Insert signature file in current article buffer.
535If there is a file named .signature-DISTRIBUTION, it is used instead
536of usual .signature when the distribution of the article is
537DISTRIBUTION.  Set the variable to nil to prevent appending the
538signature file automatically.
539Signature file is specified by the variable gnus-signature-file."
540  (save-excursion
541    (save-restriction
542      ;; Change signature file by distribution.
543      ;; Suggested by hyoko@flab.fujitsu.co.jp.
544      (let ((signature
545	     (if gnus-signature-file
546		 (expand-file-name gnus-signature-file nil)))
547	    (distribution nil))
548	(goto-char (point-min))
549	(search-forward "\n\n")
550	(narrow-to-region (point-min) (point))
551	(setq distribution (mail-fetch-field "distribution"))
552	(widen)
553	(if signature
554	    (progn
555	      (if (file-exists-p (concat signature "-" distribution))
556		  (setq signature (concat signature "-" distribution)))
557	      ;; Insert signature.
558	      (if (file-exists-p signature)
559		  (progn
560		    (goto-char (point-max))
561		    (insert "--\n")
562		    (insert-file-contents signature)))
563	      ))))))
564
565(defun gnus-inews-do-fcc ()
566  "Process FCC: fields in current article buffer.
567Unless the first character of the field is `|', the article is saved
568to the specified file using the function specified by the variable
569gnus-author-copy-saver.  The default function rmail-output saves in
570Unix mailbox format.
571If the first character is `|', the contents of the article is send to
572a program specified by the rest of the value."
573  (let ((fcc-list nil)
574	(fcc-file nil)
575	(case-fold-search t))		;Should ignore case.
576    (save-excursion
577      (save-restriction
578	(goto-char (point-min))
579	(search-forward "\n\n")
580	(narrow-to-region (point-min) (point))
581	(goto-char (point-min))
582	(while (re-search-forward "^FCC:[ \t]*" nil t)
583	  (setq fcc-list
584		(cons (buffer-substring
585		       (point)
586		       (progn
587			 (end-of-line)
588			 (skip-chars-backward " \t")
589			 (point)))
590		      fcc-list))
591	  (delete-region (match-beginning 0)
592			 (progn (forward-line 1) (point))))
593	;; Process FCC operations.
594	(widen)
595	(while fcc-list
596	  (setq fcc-file (car fcc-list))
597	  (setq fcc-list (cdr fcc-list))
598	  (cond ((string-match "^[ \t]*|[ \t]*\\(.*\\)[ \t]*$" fcc-file)
599		 (let ((program (substring fcc-file
600					   (match-beginning 1) (match-end 1))))
601		   ;; Suggested by yuki@flab.fujitsu.junet.
602		   ;; Send article to named program.
603		   (call-process-region (point-min) (point-max) shell-file-name
604					nil nil nil "-c" program)
605		   ))
606		(t
607		 ;; Suggested by hyoko@flab.fujitsu.junet.
608		 ;; Save article in Unix mail format by default.
609		 (if (and gnus-author-copy-saver
610			  (not (eq gnus-author-copy-saver 'rmail-output)))
611		     (funcall gnus-author-copy-saver fcc-file)
612		   (if (and (file-readable-p fcc-file) (rmail-file-p fcc-file))
613		       (gnus-output-to-rmail fcc-file)
614		     (rmail-output fcc-file 1 t t)))
615		 ))
616	  )
617	))
618    ))
619
620(defun gnus-inews-path ()
621  "Return uucp path."
622  (let ((login-name (gnus-inews-login-name)))
623    (cond ((null gnus-use-generic-path)
624	   (concat gnus-nntp-server "!" login-name))
625	  ((stringp gnus-use-generic-path)
626	   ;; Support GENERICPATH.  Suggested by vixie@decwrl.dec.com.
627	   (concat gnus-use-generic-path "!" login-name))
628	  (t login-name))
629    ))
630
631(defun gnus-inews-user-name ()
632  "Return user's network address as `NAME@DOMAIN (FULL NAME)'."
633  (let ((login-name (gnus-inews-login-name))
634	(full-name (gnus-inews-full-name)))
635    (concat login-name "@" (gnus-inews-domain-name gnus-use-generic-from)
636	    ;; User's full name.
637	    (cond ((string-equal full-name "") "")
638		  ((string-equal full-name "&")	;Unix hack.
639		   (concat " (" login-name ")"))
640		  (t
641		   (concat " (" full-name ")")))
642	    )))
643
644(defun gnus-inews-login-name ()
645  "Return user login name.
646Got from the variable `gnus-user-login-name' and the function
647`user-login-name'."
648  (or gnus-user-login-name (user-login-name)))
649
650(defun gnus-inews-full-name ()
651  "Return user full name.
652Got from the variable gnus-user-full-name, the environment variable
653NAME, and the function user-full-name."
654  (or gnus-user-full-name
655      (getenv "NAME") (user-full-name)))
656
657(defun gnus-inews-domain-name (&optional genericfrom)
658  "Return user's domain name.
659If optional argument GENERICFROM is a string, use it as the domain
660name; if it is non-nil, strip of local host name from the domain name.
661If the function `system-name' returns full internet name and the
662domain is undefined, the domain name is got from it."
663  ;; Note: compatibility hack.  This will be removed in the next version.
664  (and (null gnus-local-domain)
665       (boundp 'gnus-your-domain)
666       (setq gnus-local-domain gnus-your-domain))
667  ;; End of compatibility hack.
668  (let ((domain (or (if (stringp genericfrom) genericfrom)
669		    (getenv "DOMAINNAME")
670		    gnus-local-domain
671		    ;; Function `system-name' may return full internet name.
672		    ;; Suggested by Mike DeCorte <mrd@sun.soe.clarkson.edu>.
673		    (if (string-match "\\." (system-name))
674			(substring (system-name) (match-end 0)))
675		    (read-string "Domain name (no host): ")))
676	(host (or (if (string-match "\\." (system-name))
677		      (substring (system-name) 0 (match-beginning 0)))
678		  (system-name))))
679    (if (string-equal "." (substring domain 0 1))
680	(setq domain (substring domain 1)))
681    (if (null gnus-local-domain)
682	(setq gnus-local-domain domain))
683    ;; Support GENERICFROM as same as standard Bnews system.
684    ;; Suggested by ohm@kaba.junet and vixie@decwrl.dec.com.
685    (cond ((null genericfrom)
686	   (concat host "." domain))
687	  ;;((stringp genericfrom) genericfrom)
688	  (t domain))
689    ))
690
691(defun gnus-inews-message-id ()
692  "Generate unique Message-ID for user."
693  ;; Message-ID should not contain a slash and should be terminated by
694  ;; a number.  I don't know the reason why it is so.
695  (concat "<" (gnus-inews-unique-id) "@" (gnus-inews-domain-name) ">"))
696
697(defun gnus-inews-unique-id ()
698  "Generate unique ID from user name and current time."
699  (let ((date (current-time-string))
700	(name (gnus-inews-login-name)))
701    (if (string-match "^[^ ]+ \\([^ ]+\\)[ ]+\\([0-9]+\\) \\([0-9]+\\):\\([0-9]+\\):\\([0-9]+\\) [0-9][0-9]\\([0-9][0-9]\\)"
702		      date)
703	(concat (upcase name) "."
704		(substring date (match-beginning 6) (match-end 6)) ;Year
705		(substring date (match-beginning 1) (match-end 1)) ;Month
706		(substring date (match-beginning 2) (match-end 2)) ;Day
707		(substring date (match-beginning 3) (match-end 3)) ;Hour
708		(substring date (match-beginning 4) (match-end 4)) ;Minute
709		(substring date (match-beginning 5) (match-end 5)) ;Second
710		)
711      (error "Cannot understand current-time-string: %s." date))
712    ))
713
714(defun gnus-current-time-zone (time)
715  "The local time zone in effect at TIME, or nil if not known."
716  (let ((z (and (fboundp 'current-time-zone) (current-time-zone time))))
717    (if (and z (car z)) z gnus-local-timezone)))
718
719(defun gnus-inews-date ()
720  "Date string of today.
721If `current-time-zone' works, or if `gnus-local-timezone' is set correctly,
722this yields a date that conforms to RFC 822.  Otherwise a buggy date will
723be generated; this might work with some older news servers."
724  (let* ((now (and (fboundp 'current-time) (current-time)))
725	 (zone (gnus-current-time-zone now)))
726    (if zone
727	(gnus-inews-valid-date now zone)
728      ;; No timezone info.
729      (gnus-inews-buggy-date now))))
730
731(defun gnus-inews-valid-date (&optional time zone)
732  "A date string that represents TIME and conforms to the Usenet standard.
733TIME is optional and defaults to the current time.
734Some older versions of Emacs always act as if TIME is nil.
735The optional argument ZONE specifies the local time zone (default GMT)."
736  (timezone-make-date-arpa-standard
737   (if (fboundp 'current-time)
738       (current-time-string time)
739     (current-time-string))
740   zone "GMT"))
741
742(defun gnus-inews-buggy-date (&optional time)
743  "A buggy date string that represents TIME.
744TIME is optional and defaults to the current time.
745Some older versions of Emacs always act as if TIME is nil."
746  (let ((date (if (fboundp 'current-time)
747		  (current-time-string time)
748		(current-time-string))))
749    (if (string-match "^[^ ]+ \\([^ ]+\\)[ ]+\\([0-9]+\\) \\([0-9:]+\\) [0-9][0-9]\\([0-9][0-9]\\)"
750		      date)
751	(concat (substring date (match-beginning 2) (match-end 2)) ;Day
752		" "
753		(substring date (match-beginning 1) (match-end 1)) ;Month
754		" "
755		(substring date (match-beginning 4) (match-end 4)) ;Year
756		" "
757		(substring date (match-beginning 3) (match-end 3))) ;Time
758      (error "Cannot understand current-time-string: %s." date))
759    ))
760
761(defun gnus-inews-organization ()
762  "Return user's organization.
763The ORGANIZATION environment variable is used if defined.
764If not, the variable gnus-local-organization is used instead.
765If the value begins with a slash, it is taken as the name of a file
766containing the organization."
767  ;; The organization must be got in this order since the ORGANIZATION
768  ;; environment variable is intended for user specific while
769  ;; gnus-local-organization is for machine or organization specific.
770
771  ;; Note: compatibility hack.  This will be removed in the next version.
772  (and (null gnus-local-organization)
773       (boundp 'gnus-your-organization)
774       (setq gnus-local-organization gnus-your-organization))
775  ;; End of compatibility hack.
776  (let* ((private-file (expand-file-name "~/.organization" nil))
777	 (organization (or (getenv "ORGANIZATION")
778			   gnus-local-organization
779			   private-file)))
780    (and (stringp organization)
781	 (> (length organization) 0)
782	 (string-equal (substring organization 0 1) "/")
783	 ;; Get it from the user and system file.
784	 ;; Suggested by roland@wheaties.ai.mit.edu (Roland McGrath).
785	 (let ((dist (mail-fetch-field "distribution")))
786	   (setq organization
787		 (cond ((file-exists-p (concat organization "-" dist))
788			(concat organization "-" dist))
789		       ((file-exists-p organization) organization)
790		       ((file-exists-p gnus-organization-file)
791			gnus-organization-file)
792		       (t organization)))
793	   ))
794    (cond ((not (stringp organization)) nil)
795	  ((and (string-equal (substring organization 0 1) "/")
796		(file-exists-p organization))
797	   ;; If the first character is `/', assume it is the name of
798	   ;; a file containing the organization.
799	   (save-excursion
800	     (let ((tmpbuf (get-buffer-create " *GNUS organization*")))
801	       (set-buffer tmpbuf)
802	       (erase-buffer)
803	       (insert-file-contents organization)
804	       (prog1 (buffer-string)
805		 (kill-buffer tmpbuf))
806	       )))
807	  ((string-equal organization private-file) nil) ;No such file
808	  (t organization))
809    ))
810
811(defun gnus-inews-lines ()
812  "Count the number of lines and return numeric string."
813  (save-excursion
814    (save-restriction
815      (widen)
816      (goto-char (point-min))
817      (search-forward "\n\n" nil 'move)
818      (int-to-string (count-lines (point) (point-max))))))
819
820(provide 'gnuspost)
821
822;;; gnuspost.el ends here
823