1 ;;; url-domsuf.el --- Say what domain names can have cookies set.
3 ;; Copyright (C) 2012 Free Software Foundation, Inc.
5 ;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
7 ;; Keywords: comm, data, processes, hypermedia
9 ;; This file is part of GNU Emacs.
11 ;; GNU Emacs is free software: you can redistribute it and/or modify
12 ;; it under the terms of the GNU General Public License as published by
13 ;; the Free Software Foundation, either version 3 of the License, or
14 ;; (at your option) any later version.
16 ;; GNU Emacs is distributed in the hope that it will be useful,
17 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
18 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 ;; GNU General Public License for more details.
21 ;; You should have received a copy of the GNU General Public License
22 ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
26 ;; The rules for what domains can have cookies set is defined here:
27 ;; http://publicsuffix.org/list/
31 (defvar url-domsuf-domains nil)
33 (defun url-domsuf-parse-file ()
36 (if (featurep 'xemacs)
37 (locate-file "publicsuffix.txt" data-directory-list)
38 (expand-file-name "publicsuffix.txt" data-directory)))
42 (when (not (looking-at "[/\n\t ]"))
43 ;; !pref.aichi.jp means that it's allowed.
44 (if (not (eq (following-char) ?!))
48 (setq domain (buffer-substring (point) (line-end-position)))
50 ((string-match "\\`\\*\\." domain)
51 (setq domain (substring domain 2))
52 (push (cons domain (1+ (length (split-string domain "[.]"))))
55 (push (cons domain t) domains))
57 (push (cons domain nil) domains))))
59 (setq url-domsuf-domains (nreverse domains)))))
61 (defun url-domsuf-cookie-allowed-p (domain)
62 (unless url-domsuf-domains
63 (url-domsuf-parse-file))
65 (domain-bits (split-string domain "[.]"))
66 (length (length domain-bits))
67 (upper-domain (mapconcat 'identity (cdr domain-bits) "."))
69 (dolist (elem url-domsuf-domains)
70 (setq entry (car elem)
75 (string= domain entry))
77 ;; "!pref.hokkaido.jp"
79 (string= domain entry))
82 ((and (numberp modifier)
84 (string= entry upper-domain))
85 (setq allowedp nil))))
90 ;; (url-domsuf-cookie-allowed-p "com") => nil
91 ;; (url-domsuf-cookie-allowed-p "foo.bar.ar") => t
92 ;; (url-domsuf-cookie-allowed-p "bar.ar") => nil
93 ;; (url-domsuf-cookie-allowed-p "co.uk") => nil
94 ;; (url-domsuf-cookie-allowed-p "foo.bar.hokkaido.jo") => t
95 ;; (url-domsuf-cookie-allowed-p "bar.hokkaido.jp") => nil
96 ;; (url-domsuf-cookie-allowed-p "pref.hokkaido.jp") => t
100 ;;; url-domsuf.el ends here