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8c8b8430 | 1 | ;;; url-news.el --- News Uniform Resource Locator retrieval code |
00eef4de | 2 | |
71ddfde5 | 3 | ;; Copyright (C) 1996, 1997, 1998, 1999, 2004, |
81cafdfe | 4 | ;; 2005, 2006 Free Software Foundation, Inc. |
00eef4de | 5 | |
8c8b8430 SM |
6 | ;; Keywords: comm, data, processes |
7 | ||
00eef4de LH |
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 the | |
4fc5845f LK |
22 | ;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
23 | ;; Boston, MA 02110-1301, USA. | |
00eef4de LH |
24 | |
25 | ;;; Code: | |
26 | ||
8c8b8430 SM |
27 | (require 'url-vars) |
28 | (require 'url-util) | |
29 | (require 'url-parse) | |
30 | (require 'nntp) | |
31 | (autoload 'url-warn "url") | |
32 | (autoload 'gnus-group-read-ephemeral-group "gnus-group") | |
81cafdfe SM |
33 | (eval-when-compile (require 'cl)) |
34 | (defvar nntp-open-tls-stream) | |
35 | (defvar nntp-open-ssl-stream) | |
8c8b8430 SM |
36 | |
37 | (defgroup url-news nil | |
6a2f8c56 | 38 | "News related options." |
8c8b8430 SM |
39 | :group 'url) |
40 | ||
41 | (defun url-news-open-host (host port user pass) | |
42 | (if (fboundp 'nnheader-init-server-buffer) | |
43 | (nnheader-init-server-buffer)) | |
60b5eb78 | 44 | (nntp-open-server host (list port)) |
8c8b8430 SM |
45 | (if (and user pass) |
46 | (progn | |
47 | (nntp-send-command "^.*\r?\n" "AUTHINFO USER" user) | |
48 | (nntp-send-command "^.*\r?\n" "AUTHINFO PASS" pass) | |
49 | (if (not (nntp-server-opened host)) | |
50 | (url-warn 'url (format "NNTP authentication to `%s' as `%s' failed" | |
51 | host user)))))) | |
52 | ||
53 | (defun url-news-fetch-message-id (host message-id) | |
54 | (let ((buf (generate-new-buffer " *url-news*"))) | |
55 | (if (eq ?> (aref message-id (1- (length message-id)))) | |
56 | nil | |
57 | (setq message-id (concat "<" message-id ">"))) | |
58 | (if (cdr-safe (nntp-request-article message-id nil host buf)) | |
59 | ;; Successfully retrieved the article | |
60 | nil | |
81cafdfe | 61 | (with-current-buffer buf |
8c8b8430 SM |
62 | (insert "Content-type: text/html\n\n" |
63 | "<html>\n" | |
64 | " <head>\n" | |
65 | " <title>Error</title>\n" | |
66 | " </head>\n" | |
67 | " <body>\n" | |
68 | " <div>\n" | |
69 | " <h1>Error requesting article...</h1>\n" | |
70 | " <p>\n" | |
71 | " The status message returned by the NNTP server was:" | |
72 | "<br><hr>\n" | |
73 | " <xmp>\n" | |
74 | (nntp-status-message) | |
75 | " </xmp>\n" | |
76 | " </p>\n" | |
77 | " <p>\n" | |
78 | " If you If you feel this is an error, <a href=\"" | |
30bfc9ce | 79 | "mailto:" url-bug-address "\">send mail</a>\n" |
8c8b8430 SM |
80 | " </p>\n" |
81 | " </div>\n" | |
82 | " </body>\n" | |
83 | "</html>\n" | |
84 | "<!-- Automatically generated by URL v" url-version " -->\n" | |
85 | ))) | |
86 | buf)) | |
87 | ||
88 | (defun url-news-fetch-newsgroup (newsgroup host) | |
89 | (declare (special gnus-group-buffer)) | |
90 | (if (string-match "^/+" newsgroup) | |
91 | (setq newsgroup (substring newsgroup (match-end 0)))) | |
92 | (if (string-match "/+$" newsgroup) | |
93 | (setq newsgroup (substring newsgroup 0 (match-beginning 0)))) | |
94 | ||
30bfc9ce | 95 | ;; This saves us from checking new news if Gnus is already running |
8c8b8430 SM |
96 | ;; FIXME - is it relatively safe to use gnus-alive-p here? FIXME |
97 | (if (or (not (get-buffer gnus-group-buffer)) | |
81cafdfe | 98 | (with-current-buffer gnus-group-buffer |
8c8b8430 SM |
99 | (not (eq major-mode 'gnus-group-mode)))) |
100 | (gnus)) | |
101 | (set-buffer gnus-group-buffer) | |
102 | (goto-char (point-min)) | |
103 | (gnus-group-read-ephemeral-group newsgroup | |
104 | (list 'nntp host | |
105 | 'nntp-open-connection-function | |
106 | nntp-open-connection-function) | |
107 | nil | |
108 | (cons (current-buffer) 'browse))) | |
6a2f8c56 | 109 | |
8c8b8430 SM |
110 | ;;;###autoload |
111 | (defun url-news (url) | |
112 | ;; Find a news reference | |
113 | (let* ((host (or (url-host url) url-news-server)) | |
114 | (port (url-port url)) | |
115 | (article-brackets nil) | |
116 | (buf nil) | |
81cafdfe | 117 | (article (url-unhex-string (url-filename url)))) |
8c8b8430 | 118 | (url-news-open-host host port (url-user url) (url-password url)) |
8c8b8430 SM |
119 | (cond |
120 | ((string-match "@" article) ; Its a specific article | |
121 | (setq buf (url-news-fetch-message-id host article))) | |
122 | ((string= article "") ; List all newsgroups | |
123 | (gnus)) | |
124 | (t ; Whole newsgroup | |
125 | (url-news-fetch-newsgroup article host))) | |
126 | buf)) | |
127 | ||
128 | ;;;###autoload | |
129 | (defun url-snews (url) | |
5bbb0eb9 SJ |
130 | (let ((nntp-open-connection-function (if (eq 'tls url-gateway-method) |
131 | nntp-open-tls-stream | |
132 | nntp-open-ssl-stream))) | |
8c8b8430 SM |
133 | (url-news url))) |
134 | ||
135 | (provide 'url-news) | |
e5566bd5 | 136 | |
81cafdfe | 137 | ;; arch-tag: 8975be13-04e8-4d38-bfff-47918e3ad311 |
00eef4de | 138 | ;;; url-news.el ends here |