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authorStefan Monnier <[email protected]>2004-04-04 01:21:46 +0000
committerStefan Monnier <[email protected]>2004-04-04 01:21:46 +0000
commit8c8b8430b557f8f1503bfecce39b6f2938665e5a (patch)
tree1ed7295c23b469148f8996b6b37b11e9936fb7a1 /lisp/url/url-proxy.el
parent5c84686c48f49474e4b5b59ab859ff56fc7248d2 (diff)
Initial revision
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+;;; url-proxy.el --- Proxy server support
+;; Author: $Author: fx $
+;; Created: $Date: 2001/10/11 21:09:35 $
+;; Version: $Revision: 1.5 $
+;; Keywords: comm, data, processes, hypermedia
+
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;;; Copyright (c) 1999 Free Software Foundation, Inc.
+;;;
+;;; 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 2, 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; see the file COPYING. If not, write to the
+;;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+;;; Boston, MA 02111-1307, USA.
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+
+(require 'url-parse)
+(autoload 'url-warn "url")
+
+(defun url-default-find-proxy-for-url (urlobj host)
+ (cond
+ ((or (and (assoc "no_proxy" url-proxy-services)
+ (string-match
+ (cdr
+ (assoc "no_proxy" url-proxy-services))
+ host))
+ (equal "www" (url-type urlobj)))
+ "DIRECT")
+ ((cdr (assoc (url-type urlobj) url-proxy-services))
+ (concat "PROXY " (cdr (assoc (url-type urlobj) url-proxy-services))))
+ ;;
+ ;; Should check for socks
+ ;;
+ (t
+ "DIRECT")))
+
+(defvar url-proxy-locator 'url-default-find-proxy-for-url)
+
+(defun url-find-proxy-for-url (url host)
+ (let ((proxies (split-string (funcall url-proxy-locator url host) " *; *"))
+ (proxy nil)
+ (case-fold-search t))
+ ;; Not sure how I should handle gracefully degrading from one proxy to
+ ;; another, so for now just deal with the first one
+ ;; (while proxies
+ (if (listp proxies)
+ (setq proxy (car proxies))
+ (setq proxy proxies))
+ (cond
+ ((string-match "^direct" proxy) nil)
+ ((string-match "^proxy +" proxy)
+ (concat "http://" (substring proxy (match-end 0)) "/"))
+ ((string-match "^socks +" proxy)
+ (concat "socks://" (substring proxy (match-end 0))))
+ (t
+ (url-warn 'url (format "Unknown proxy directive: %s" proxy) 'critical)
+ nil))))
+
+(defun url-proxy (url callback &optional cbargs)
+ ;; Retrieve URL from a proxy.
+ ;; Expects `url-using-proxy' to be bound to the specific proxy to use."
+ (setq url-using-proxy (url-generic-parse-url url-using-proxy))
+ (let ((proxy-object (copy-sequence url)))
+ (url-set-target proxy-object nil)
+ (url-http url-using-proxy callback cbargs)))
+
+(provide 'url-proxy)