lisp/url/url-ns.el

   1 ;;; url-ns.el --- Various netscape-ish functions for proxy definitions
   2
   3 ;; Copyright (C) 1997, 1998, 1999, 2004, 2005 Free Software Foundation, Inc.
   4
   5 ;; Keywords: comm, data, processes, hypermedia
   6
   7 ;; This file is part of GNU Emacs.
   8
   9 ;; GNU Emacs is free software; you can redistribute it and/or modify
  10 ;; it under the terms of the GNU General Public License as published by
  11 ;; the Free Software Foundation; either version 2, or (at your option)
  12 ;; any later version.
  13
  14 ;; GNU Emacs is distributed in the hope that it will be useful,
  15 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 ;; GNU General Public License for more details.
  18
  19 ;; You should have received a copy of the GNU General Public License
  20 ;; along with GNU Emacs; see the file COPYING.  If not, write to the
  21 ;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  22 ;; Boston, MA 02110-1301, USA.
  23
  24 ;;; Code:
  25
  26 (require 'url-gw)
  27
  28 ;;;###autoload
  29 (defun isPlainHostName (host)
  30   (not (string-match "\\." host)))
  31
  32 ;;;###autoload
  33 (defun dnsDomainIs (host dom)
  34   (string-match (concat (regexp-quote dom) "$") host))
  35
  36 ;;;###autoload
  37 (defun dnsResolve (host)
  38   (url-gateway-nslookup-host host))
  39
  40 ;;;###autoload
  41 (defun isResolvable (host)
  42   (if (string-match "^[0-9.]+$" host)
  43       t
  44     (not (string= host (url-gateway-nslookup-host host)))))
  45
  46 ;;;###autoload
  47 (defun isInNet (ip net mask)
  48   (let ((netc (split-string ip "\\."))
  49         (ipc  (split-string net "\\."))
  50         (maskc (split-string mask "\\.")))
  51     (if (or (/= (length netc) (length ipc))
  52             (/= (length ipc) (length maskc)))
  53         nil
  54       (setq netc (mapcar 'string-to-number netc)
  55             ipc (mapcar 'string-to-number ipc)
  56             maskc (mapcar 'string-to-number maskc))
  57       (and
  58        (= (logand (nth 0 netc) (nth 0 maskc))
  59           (logand (nth 0 ipc)  (nth 0 maskc)))
  60        (= (logand (nth 1 netc) (nth 1 maskc))
  61           (logand (nth 1 ipc)  (nth 1 maskc)))
  62        (= (logand (nth 2 netc) (nth 2 maskc))
  63           (logand (nth 2 ipc)  (nth 2 maskc)))
  64        (= (logand (nth 3 netc) (nth 3 maskc))
  65           (logand (nth 3 ipc)  (nth 3 maskc)))))))
  66
  67 ;; Netscape configuration file parsing
  68 (defvar url-ns-user-prefs nil
  69   "Internal, do not use.")
  70
  71 ;;;###autoload
  72 (defun url-ns-prefs (&optional file)
  73   (if (not file)
  74       (setq file (expand-file-name "~/.netscape/preferences.js")))
  75   (if (not (and (file-exists-p file)
  76                 (file-readable-p file)))
  77       (message "Could not open %s for reading" file)
  78     (save-excursion
  79       (let ((false nil)
  80             (true t))
  81         (setq url-ns-user-prefs (make-hash-table :size 13 :test 'equal))
  82         (set-buffer (get-buffer-create " *ns-parse*"))
  83         (erase-buffer)
  84         (insert-file-contents file)
  85         (goto-char (point-min))
  86         (while (re-search-forward "^//" nil t)
  87           (replace-match ";;"))
  88         (goto-char (point-min))
  89         (while (re-search-forward "^user_pref(" nil t)
  90           (replace-match "(url-ns-set-user-pref "))
  91         (goto-char (point-min))
  92         (while (re-search-forward "\"," nil t)
  93           (replace-match "\""))
  94         (goto-char (point-min))
  95         (eval-buffer)))))
  96
  97 (defun url-ns-set-user-pref (key val)
  98   (puthash key val url-ns-user-prefs))
  99
 100 ;;;###autoload
 101 (defun url-ns-user-pref (key &optional default)
 102   (gethash key url-ns-user-prefs default))
 103
 104 (provide 'url-ns)
 105
 106 ;;; arch-tag: 69520992-cf97-40b4-9ad1-c866d3cae5bf
 107 ;;; url-ns.el ends here