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;;; url-ns.el --- Various netscape-ish functions for proxy definitions
;; Copyright (C) 1997-1999, 2004-2018 Free Software Foundation, Inc.
;; Keywords: comm, data, processes, hypermedia
;; This file is part of GNU Emacs.
;; GNU Emacs is free software: you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.
;; GNU Emacs is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
;;; Code:
(require 'url-gw)
;;;###autoload
(defun isPlainHostName (host)
(not (string-match "\\." host)))
;;;###autoload
(defun dnsDomainIs (host dom)
(string-match (concat (regexp-quote dom) "$") host))
;;;###autoload
(defun dnsResolve (host)
(url-gateway-nslookup-host host))
;;;###autoload
(defun isResolvable (host)
(if (string-match "^[0-9.]+$" host)
t
(not (string= host (url-gateway-nslookup-host host)))))
;;;###autoload
(defun isInNet (ip net mask)
(let ((netc (split-string ip "\\."))
(ipc (split-string net "\\."))
(maskc (split-string mask "\\.")))
(if (or (/= (length netc) (length ipc))
(/= (length ipc) (length maskc)))
nil
(setq netc (mapcar 'string-to-number netc)
ipc (mapcar 'string-to-number ipc)
maskc (mapcar 'string-to-number maskc))
(and
(= (logand (nth 0 netc) (nth 0 maskc))
(logand (nth 0 ipc) (nth 0 maskc)))
(= (logand (nth 1 netc) (nth 1 maskc))
(logand (nth 1 ipc) (nth 1 maskc)))
(= (logand (nth 2 netc) (nth 2 maskc))
(logand (nth 2 ipc) (nth 2 maskc)))
(= (logand (nth 3 netc) (nth 3 maskc))
(logand (nth 3 ipc) (nth 3 maskc)))))))
;; Netscape configuration file parsing
(defvar url-ns-user-prefs nil
"Internal, do not use.")
;;;###autoload
(defun url-ns-prefs (&optional file)
(if (not file)
(setq file (expand-file-name "~/.netscape/preferences.js")))
(if (not (and (file-exists-p file)
(file-readable-p file)))
(message "Could not open %s for reading" file)
(save-excursion
(let ((false nil)
(true t))
(setq url-ns-user-prefs (make-hash-table :size 13 :test 'equal))
(set-buffer (get-buffer-create " *ns-parse*"))
(erase-buffer)
(insert-file-contents file)
(goto-char (point-min))
(while (re-search-forward "^//" nil t)
(replace-match ";;"))
(goto-char (point-min))
(while (re-search-forward "^user_pref(" nil t)
(replace-match "(url-ns-set-user-pref "))
(goto-char (point-min))
(while (re-search-forward "\"," nil t)
(replace-match "\""))
(goto-char (point-min))
(eval-buffer)))))
(defun url-ns-set-user-pref (key val)
(puthash key val url-ns-user-prefs))
;;;###autoload
(defun url-ns-user-pref (key &optional default)
(gethash key url-ns-user-prefs default))
(provide 'url-ns)
;;; url-ns.el ends here
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