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bc511a64f6
Most of this change is to boilerplate commentary such as license URLs. This change was prompted by ftp://ftp.gnu.org's going-away party, planned for November. Change these FTP URLs to https://ftp.gnu.org instead. Make similar changes for URLs to other organizations moving away from FTP. Also, change HTTP to HTTPS for URLs to gnu.org and fsf.org when this works, as this will further help defend against man-in-the-middle attacks (for this part I omitted the MS-DOS and MS-Windows sources and the test tarballs to keep the workload down). HTTPS is not fully working to lists.gnu.org so I left those URLs alone for now.
104 lines
3.2 KiB
EmacsLisp
104 lines
3.2 KiB
EmacsLisp
;;; url-domsuf.el --- Say what domain names can have cookies set.
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;; Copyright (C) 2012-2017 Free Software Foundation, Inc.
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;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
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;; Keywords: comm, data, processes, hypermedia
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;; This file is part of GNU Emacs.
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;;
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;; GNU Emacs is free software: you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation, either version 3 of the License, or
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;; (at your option) any later version.
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;; GNU Emacs is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
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;;; Commentary:
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;; The rules for what domains can have cookies set is defined here:
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;; http://publicsuffix.org/list/
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;;; Code:
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(defvar url-domsuf-domains nil)
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(defun url-domsuf-parse-file ()
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(with-temp-buffer
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(with-auto-compression-mode
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(insert-file-contents
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(let* ((suffixfile (expand-file-name "publicsuffix.txt" data-directory))
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(compressed-file (concat suffixfile ".gz")))
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(or (and (file-readable-p compressed-file) compressed-file)
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suffixfile))))
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(let ((domains nil)
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domain exception)
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(while (not (eobp))
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(when (not (looking-at "[/\n\t ]"))
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;; !pref.aichi.jp means that it's allowed.
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(if (not (eq (following-char) ?!))
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(setq exception nil)
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(setq exception t)
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(forward-char 1))
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(setq domain (buffer-substring (point) (line-end-position)))
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(cond
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((string-match "\\`\\*\\." domain)
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(setq domain (substring domain 2))
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(push (cons domain (1+ (length (split-string domain "[.]"))))
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domains))
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(exception
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(push (cons domain t) domains))
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(t
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(push (cons domain nil) domains))))
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(forward-line 1))
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(setq url-domsuf-domains (nreverse domains)))))
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(defun url-domsuf-cookie-allowed-p (domain)
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(unless url-domsuf-domains
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(url-domsuf-parse-file))
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(let* ((allowedp t)
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(domain-bits (split-string domain "[.]"))
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(length (length domain-bits))
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(upper-domain (mapconcat 'identity (cdr domain-bits) "."))
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entry modifier)
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(dolist (elem url-domsuf-domains)
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(setq entry (car elem)
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modifier (cdr elem))
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(cond
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;; "com"
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((and (null modifier)
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(string= domain entry))
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(setq allowedp nil))
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;; "!city.yokohama.jp"
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((and (eq modifier t)
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(string= domain entry))
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(setq allowedp t))
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;; "*.bd"
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((and (numberp modifier)
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(= length modifier)
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(string= entry upper-domain))
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(setq allowedp nil))))
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allowedp))
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;; Tests:
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;; TODO convert to a proper test.
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;; (url-domsuf-cookie-allowed-p "com") => nil
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;; (url-domsuf-cookie-allowed-p "foo.bar.bd") => t
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;; (url-domsuf-cookie-allowed-p "bar.bd") => nil
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;; (url-domsuf-cookie-allowed-p "co.uk") => nil
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;; (url-domsuf-cookie-allowed-p "foo.bar.hokkaido.jo") => t
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;; (url-domsuf-cookie-allowed-p "bar.yokohama.jp") => nil
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;; (url-domsuf-cookie-allowed-p "city.yokohama.jp") => t
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(provide 'url-domsuf)
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;;; url-domsuf.el ends here
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