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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.
82 lines
2.5 KiB
EmacsLisp
82 lines
2.5 KiB
EmacsLisp
;;; url-proxy.el --- Proxy server support
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;; Copyright (C) 1999, 2004-2017 Free Software Foundation, Inc.
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;; Keywords: comm, data, processes, hypermedia
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;; This file is part of GNU Emacs.
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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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;;; Code:
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(require 'url-parse)
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(autoload 'url-warn "url")
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(defun url-default-find-proxy-for-url (urlobj host)
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(cond
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((or (and (assoc "no_proxy" url-proxy-services)
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(string-match
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(cdr
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(assoc "no_proxy" url-proxy-services))
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host))
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(equal "www" (url-type urlobj)))
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"DIRECT")
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((cdr (assoc (url-type urlobj) url-proxy-services))
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(concat "PROXY " (cdr (assoc (url-type urlobj) url-proxy-services))))
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;;
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;; Should check for socks
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;;
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(t
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"DIRECT")))
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(defvar url-proxy-locator 'url-default-find-proxy-for-url)
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(defun url-find-proxy-for-url (url host)
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(let ((proxies (split-string (funcall url-proxy-locator url host) " *; *"))
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(proxy nil)
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(case-fold-search t))
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;; Not sure how I should handle gracefully degrading from one proxy to
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;; another, so for now just deal with the first one
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;; (while proxies
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(if (listp proxies)
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(setq proxy (car proxies))
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(setq proxy proxies))
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(cond
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((string-match "^direct" proxy) nil)
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((string-match "^proxy +" proxy)
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(concat "http://" (substring proxy (match-end 0)) "/"))
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((string-match "^socks +" proxy)
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(concat "socks://" (substring proxy (match-end 0))))
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(t
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(url-warn 'url (format "Unknown proxy directive: %s" proxy) 'critical)
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nil))))
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(autoload 'url-http "url-http")
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(defun url-proxy (url callback &optional cbargs)
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;; Retrieve URL from a proxy.
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;; Expects `url-using-proxy' to be bound to the specific proxy to use."
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(setq url-using-proxy (url-generic-parse-url url-using-proxy))
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(cond
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((string= (url-type url-using-proxy) "http")
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(url-http url callback cbargs))
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(t
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(error "Don't know how to use proxy `%s'" url-using-proxy))))
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(provide 'url-proxy)
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;;; url-proxy.el ends here
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