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1 ;;; url-http.el --- HTTP Uniform Resource Locator retrieval code
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2 ;; Author: wmperry
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86
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3 ;; Created: 1997/01/26 03:56:59
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4 ;; Version: 1.11
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5 ;; Keywords: comm, data, processes
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6
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7 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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8 ;;; Copyright (c) 1993-1996 by William M. Perry (wmperry@cs.indiana.edu)
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9 ;;; Copyright (c) 1996, 1997 Free Software Foundation, Inc.
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10 ;;;
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11 ;;; This file is not part of GNU Emacs, but the same permissions apply.
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12 ;;;
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13 ;;; GNU Emacs is free software; you can redistribute it and/or modify
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14 ;;; it under the terms of the GNU General Public License as published by
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15 ;;; the Free Software Foundation; either version 2, or (at your option)
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16 ;;; any later version.
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17 ;;;
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18 ;;; GNU Emacs is distributed in the hope that it will be useful,
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19 ;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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20 ;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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21 ;;; GNU General Public License for more details.
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22 ;;;
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23 ;;; You should have received a copy of the GNU General Public License
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24 ;;; along with GNU Emacs; see the file COPYING. If not, write to the
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25 ;;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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26 ;;; Boston, MA 02111-1307, USA.
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27 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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28
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29 (require 'url-vars)
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30 (require 'url-parse)
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31 (require 'url-cookie)
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32 (require 'timezone)
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33
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34 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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35 ;;; Support for HTTP/1.0 MIME messages
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36 ;;; ----------------------------------
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37 ;;; These functions are the guts of the HTTP/0.9 and HTTP/1.0 transfer
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38 ;;; protocol, handling access authorization, format negotiation, the
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39 ;;; whole nine yards.
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40 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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41 (defun url-parse-viewer-types ()
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42 "Create a string usable for an Accept: header from mm-mime-data"
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43 (let ((tmp mm-mime-data)
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44 label mjr mnr cur-mnr (str ""))
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45 (while tmp
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46 (setq mnr (cdr (car tmp))
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47 mjr (car (car tmp))
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48 tmp (cdr tmp))
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49 (while mnr
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50 (setq cur-mnr (car mnr)
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51 label (concat mjr "/" (if (string= ".*" (car cur-mnr))
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52 "*"
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53 (car cur-mnr))))
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54 (cond
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55 ((string-match (regexp-quote label) str) nil)
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56 ((> (+ (% (length str) 60)
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57 (length (concat ", " mjr "/" (car cur-mnr)))) 60)
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58 (setq str (format "%s\r\nAccept: %s" str label)))
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59 (t
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60 (setq str (format "%s, %s" str label))))
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61 (setq mnr (cdr mnr))))
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62 (substring str 2 nil)))
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63
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64 (defun url-create-multipart-request (file-list)
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65 "Create a multi-part MIME request for all files in FILE-LIST"
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66 (let ((separator (current-time-string))
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67 (content "message/http-request")
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68 (ref-url nil))
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69 (setq separator
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70 (concat "separator-"
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71 (mapconcat
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72 (function
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73 (lambda (char)
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74 (if (memq char url-mime-separator-chars)
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75 (char-to-string char) ""))) separator "")))
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76 (cons separator
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77 (concat
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78 (mapconcat
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79 (function
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80 (lambda (file)
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81 (concat "--" separator "\nContent-type: " content "\n\n"
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82 (url-create-mime-request file ref-url)))) file-list
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83 "\n")
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84 "--" separator))))
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85
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86 (defun url-create-message-id ()
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87 "Generate a string suitable for the Message-ID field of a request"
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88 (concat "<" (url-create-unique-id) "@" (system-name) ">"))
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89
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90 (defun url-create-unique-id ()
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91 ;; Generate unique ID from user name and current time.
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92 (let* ((date (current-time-string))
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93 (name (user-login-name))
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94 (dateinfo (and date (timezone-parse-date date)))
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95 (timeinfo (and date (timezone-parse-time (aref dateinfo 3)))))
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96 (if (and dateinfo timeinfo)
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97 (concat (upcase name) "."
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98 (aref dateinfo 0) ; Year
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99 (aref dateinfo 1) ; Month
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100 (aref dateinfo 2) ; Day
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101 (aref timeinfo 0) ; Hour
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102 (aref timeinfo 1) ; Minute
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103 (aref timeinfo 2) ; Second
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104 )
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105 (error "Cannot understand current-time-string: %s." date))
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106 ))
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107
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108 (defun url-http-user-agent-string ()
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109 (if (or (eq url-privacy-level 'paranoid)
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110 (and (listp url-privacy-level)
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111 (memq 'agent url-privacy-level)))
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112 ""
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113 (format "User-Agent: %s/%s URL/%s%s\r\n"
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114 url-package-name url-package-version
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115 url-version
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116 (cond
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117 ((and url-os-type url-system-type)
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118 (concat " (" url-os-type "; " url-system-type ")"))
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119 ((or url-os-type url-system-type)
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120 (concat " (" (or url-system-type url-os-type) ")"))
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121 (t "")))))
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122
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123 (defun url-create-mime-request (fname ref-url)
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124 "Create a MIME request for fname, referred to by REF-URL."
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125 (let* ((extra-headers)
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126 (request nil)
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127 (url (url-view-url t))
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128 (no-cache (cdr-safe (assoc "Pragma" url-request-extra-headers)))
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129 (proxy-auth (if (or (cdr-safe (assoc "Proxy-Authorization"
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130 url-request-extra-headers))
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131 (not (boundp 'proxy-info)))
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132 nil
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133 (let ((url-basic-auth-storage
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134 url-proxy-basic-authentication))
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135 (url-get-authentication url nil 'any nil))))
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86
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136 (proxy-obj (if (boundp 'proxy-info)
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137 (url-generic-parse-url proxy-info)))
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138 (real-fname (if proxy-obj (url-filename proxy-obj) fname))
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139 (host (or (and proxy-obj (url-host proxy-obj))
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140 url-current-server))
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141 (auth (if (cdr-safe (assoc "Authorization" url-request-extra-headers))
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142 nil
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143 (url-get-authentication (or
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144 (and (boundp 'proxy-info)
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145 proxy-info)
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146 url) nil 'any nil))))
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147 (setq no-cache (and no-cache (string-match "no-cache" no-cache)))
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148 (if auth
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149 (setq auth (concat "Authorization: " auth "\r\n")))
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150 (if proxy-auth
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151 (setq proxy-auth (concat "Proxy-Authorization: " proxy-auth "\r\n")))
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152
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153 (if (and ref-url (stringp ref-url) (or (string= ref-url "file:nil")
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154 (string= ref-url "")))
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155 (setq ref-url nil))
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156
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157 (if (or (memq url-privacy-level '(low high paranoid))
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158 (and (listp url-privacy-level)
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159 (memq 'lastloc url-privacy-level)))
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160 (setq ref-url nil))
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161
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162 (setq extra-headers (mapconcat
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163 (function (lambda (x)
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164 (concat (car x) ": " (cdr x))))
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165 url-request-extra-headers "\r\n"))
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166 (if (not (equal extra-headers ""))
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167 (setq extra-headers (concat extra-headers "\r\n")))
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168 (setq request
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169 (format
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170 (concat
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171 "%s %s HTTP/1.0\r\n" ; The request
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172 "MIME-Version: 1.0\r\n" ; Version of MIME we speaketh
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173 "Extension: %s\r\n" ; HTTP extensions we support
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174 "Host: %s\r\n" ; Who we want to talk to
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175 "%s" ; Who its from
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176 "Accept-encoding: %s\r\n" ; Encodings we understand
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177 "Accept-language: %s\r\n" ; Languages we understand
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178 "Accept: %s\r\n" ; Types we understand
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179 "%s" ; User agent
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180 "%s" ; Authorization
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181 "%s" ; Cookies
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182 "%s" ; Proxy Authorization
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183 "%s" ; If-modified-since
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184 "%s" ; Where we came from
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185 "%s" ; Any extra headers
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186 "%s" ; Any data
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187 "\r\n") ; End request
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188 (or url-request-method "GET")
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189 fname
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190 (or url-extensions-header "none")
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191 (or host "UNKNOWN.HOST.NAME")
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192 (if url-personal-mail-address
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193 (concat "From: " url-personal-mail-address "\r\n")
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194 "")
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195 url-mime-encoding-string
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196 url-mime-language-string
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197 url-mime-accept-string
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198 (url-http-user-agent-string)
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199 (or auth "")
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200 (url-cookie-generate-header-lines host
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201 real-fname
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202 (string-match "https"
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203 url-current-type))
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204 (or proxy-auth "")
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205 (if (and (not no-cache)
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206 (member url-request-method '("GET" nil)))
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207 (let ((tm (url-is-cached url)))
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208 (if tm
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209 (concat "If-modified-since: "
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210 (url-get-normalized-date tm) "\r\n")
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211 ""))
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212 "")
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213 (if ref-url (concat "Referer: " ref-url "\r\n") "")
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214 extra-headers
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215 (if url-request-data
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216 (format "Content-length: %d\r\n\r\n%s"
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217 (length url-request-data) url-request-data)
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218 "")))
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219 request))
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220
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221 (defun url-setup-reload-timer (url must-be-viewing &optional time)
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222 ;; Set up a timer to load URL at optional TIME. If TIME is unspecified,
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223 ;; default to 5 seconds. Only loads document if MUST-BE-VIEWING is the
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224 ;; current URL when the timer expires."
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225 (if (or (not time)
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226 (<= time 0))
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227 (setq time 5))
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228 (let ((func
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229 (` (lambda ()
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230 (if (equal (url-view-url t) (, must-be-viewing))
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231 (let ((w3-reuse-buffers 'no))
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232 (if (equal (, url) (url-view-url t))
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233 (kill-buffer (current-buffer)))
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234 (w3-fetch (, url))))))))
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235 (cond
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236 ((featurep 'itimer)
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237 (start-itimer "reloader" func time))
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238 ((fboundp 'run-at-time)
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239 (run-at-time time nil func))
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240 (t
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241 (url-warn 'url "Cannot set up timer for automatic reload, sorry!")))))
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242
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243 (defun url-handle-refresh-header (reload)
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244 (if (and reload
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245 url-honor-refresh-requests
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246 (or (eq url-honor-refresh-requests t)
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247 (funcall url-confirmation-func "Honor refresh request? ")))
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248 (let ((uri (url-view-url t)))
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249 (if (string-match ";" reload)
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250 (progn
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251 (setq uri (substring reload (match-end 0) nil)
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252 reload (substring reload 0 (match-beginning 0)))
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253 (if (string-match
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254 "ur[li][ \t]*=[ \t]*\"*\\([^ \t\"]+\\)\"*"
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255 uri)
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256 (setq uri (url-match uri 1)))
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257 (setq uri (url-expand-file-name uri (url-view-url t)))))
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258 (url-setup-reload-timer uri (url-view-url t)
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259 (string-to-int (or reload "5"))))))
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260
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261 (defun url-parse-mime-headers (&optional no-delete switch-buff)
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262 ;; Parse mime headers and remove them from the html
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263 (and switch-buff (set-buffer url-working-buffer))
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264 (let* ((st (point-min))
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265 (nd (progn
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266 (goto-char (point-min))
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267 (skip-chars-forward " \t\n")
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268 (if (re-search-forward "^\r*$" nil t)
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269 (1+ (point))
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270 (point-max))))
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271 save-pos
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272 status
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273 class
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274 hname
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275 hvalu
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276 result
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277 )
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278 (narrow-to-region st (min nd (point-max)))
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279 (goto-char (point-min))
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280 (skip-chars-forward " \t\n") ; Get past any blank crap
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281 (skip-chars-forward "^ \t") ; Skip over the HTTP/xxx
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282 (setq status (read (current-buffer)); Quicker than buffer-substring, etc.
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283 result (cons (cons "status" status) result))
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284 (end-of-line)
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285 (while (not (eobp))
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286 (skip-chars-forward " \t\n\r")
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287 (setq save-pos (point))
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288 (skip-chars-forward "^:\n\r")
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289 (downcase-region save-pos (point))
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290 (setq hname (buffer-substring save-pos (point)))
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291 (skip-chars-forward ": \t ")
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292 (setq save-pos (point))
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293 (skip-chars-forward "^\n\r")
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294 (setq hvalu (buffer-substring save-pos (point))
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295 result (cons (cons hname hvalu) result))
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296 (if (string= hname "set-cookie")
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297 (url-cookie-handle-set-cookie hvalu)))
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298 (or no-delete (delete-region st (min nd (point))))
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299 (setq url-current-mime-type (cdr (assoc "content-type" result))
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300 url-current-mime-encoding (cdr (assoc "content-encoding" result))
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301 url-current-mime-viewer (mm-mime-info url-current-mime-type nil t)
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302 url-current-mime-headers result
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303 url-current-can-be-cached
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304 (not (string-match "no-cache"
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305 (or (cdr-safe (assoc "pragma" result)) ""))))
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306 (url-handle-refresh-header (cdr-safe (assoc "refresh" result)))
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307 (if (and url-request-method
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308 (not (string= url-request-method "GET")))
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309 (setq url-current-can-be-cached nil))
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310 (let ((expires (cdr-safe (assoc "expires" result))))
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311 (if (and expires url-current-can-be-cached (featurep 'timezone))
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312 (progn
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313 (if (string-match
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314 (concat "^[^,]+, +\\(..\\)-\\(...\\)-\\(..\\) +"
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315 "\\(..:..:..\\) +\\[*\\([^\]]+\\)\\]*$")
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316 expires)
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317 (setq expires (concat (url-match expires 1) " "
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318 (url-match expires 2) " "
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319 (url-match expires 3) " "
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320 (url-match expires 4) " ["
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321 (url-match expires 5) "]")))
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322 (setq expires
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323 (let ((d1 (mapcar
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324 (function
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325 (lambda (s) (and s (string-to-int s))))
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326 (timezone-parse-date
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327 (current-time-string))))
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328 (d2 (mapcar
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329 (function (lambda (s) (and s (string-to-int s))))
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330 (timezone-parse-date expires))))
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331 (- (timezone-absolute-from-gregorian
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332 (nth 1 d1) (nth 2 d1) (car d1))
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333 (timezone-absolute-from-gregorian
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334 (nth 1 d2) (nth 2 d2) (car d2))))
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335 url-current-can-be-cached (/= 0 expires)))))
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336 (setq class (/ status 100))
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337 (cond
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338 ;; Classes of response codes
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339 ;;
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340 ;; 5xx = Server Error
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341 ;; 4xx = Client Error
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342 ;; 3xx = Redirection
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343 ;; 2xx = Successful
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344 ;; 1xx = Informational
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345 ;;
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346 ((= class 2) ; Successful in some form or another
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347 (cond
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348 ((or (= status 206) ; Partial content
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349 (= status 205)) ; Reset content
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350 (setq url-current-can-be-cached nil))
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351 ((= status 204) ; No response - leave old document
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352 (kill-buffer url-working-buffer))
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353 (t nil)) ; All others indicate success
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354 )
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355 ((= class 3) ; Redirection of some type
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356 (cond
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357 ((or (= status 301) ; Moved - retry with Location: header
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358 (= status 302) ; Found - retry with Location: header
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359 (= status 303)) ; Method - retry with location/method
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360 (let ((x (url-view-url t))
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361 (redir (or (cdr (assoc "uri" result))
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362 (cdr (assoc "location" result))))
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363 (redirmeth (upcase (or (cdr (assoc "method" result))
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364 url-request-method
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365 "get"))))
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366 (if (and redir (string-match "\\([^ \t]+\\)[ \t]" redir))
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367 (setq redir (url-match redir 1)))
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368 (if (and redir (string-match "^<\\(.*\\)>$" redir))
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369 (setq redir (url-match redir 1)))
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370
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371 ;; As per Roy Fielding, 303 maps _any_ method to a 'GET'
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372 (if (= 303 status)
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373 (setq redirmeth "GET"))
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374
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375 ;; As per Roy Fielding, 301, 302 use the same method as the
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376 ;; original request, but if != GET, user interaction is
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377 ;; required.
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378 (if (and (not (string= "GET" redirmeth))
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379 (not (funcall
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380 url-confirmation-func
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381 (concat
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382 "Honor redirection with non-GET method "
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383 "(possible security risks)? "))))
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384 (progn
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385 (url-warn 'url
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386 (format
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387 "The URL %s tried to issue a redirect to %s using a method other than
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388 GET, which can open up various security holes. Please see the
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389 HTTP/1.0 specification for more details." x redir) 'error)
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390 (if (funcall url-confirmation-func
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391 "Continue (with method of GET)? ")
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392 (setq redirmeth "GET")
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393 (error "Transaction aborted."))))
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394
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395 (if (not (equal x redir))
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396 (let ((url-request-method redirmeth))
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397 (url-maybe-relative redir))
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398 (progn
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399 (goto-char (point-max))
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400 (insert "<hr>Error! This URL tried to redirect me to itself!<P>"
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401 "Please notify the server maintainer.")))))
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402 ((= status 304) ; Cached document is newer
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403 (message "Extracting from cache...")
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404 (url-extract-from-cache (url-create-cached-filename (url-view-url t))))
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405 ((= status 305) ; Use proxy in Location: header
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406 nil)))
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407 ((= class 4) ; Client error
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408 (cond
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409 ((and (= status 401) ; Unauthorized access, retry w/auth.
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410 (< url-current-passwd-count url-max-password-attempts))
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411 (setq url-current-passwd-count (1+ url-current-passwd-count))
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412 (let* ((y (or (cdr (assoc "www-authenticate" result)) "basic"))
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413 (url (url-view-url t))
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414 (type (downcase (if (string-match "[ \t]" y)
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415 (substring y 0 (match-beginning 0))
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416 y))))
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417 (cond
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418 ((or (equal "pem" type) (equal "pgp" type))
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419 (if (string-match "entity=\"\\([^\"]+\\)\"" y)
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420 (url-fetch-with-pgp url-current-file
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421 (url-match y 1) (intern type))
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422 (error "Could not find entity in %s!" type)))
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423 ((url-auth-registered type)
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424 (let ((args y)
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425 (ctr (1- (length y)))
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426 auth
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427 (url-request-extra-headers url-request-extra-headers))
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428 (while (/= 0 ctr)
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429 (if (= ?, (aref args ctr))
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430 (aset args ctr ?\;))
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431 (setq ctr (1- ctr)))
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432 (setq args (mm-parse-args y)
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433 auth (url-get-authentication url
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434 (cdr-safe
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435 (assoc "realm" args))
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436 type t args))
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437 (if auth
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438 (setq url-request-extra-headers
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439 (cons (cons "Authorization" auth)
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440 url-request-extra-headers)))
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441 (url-retrieve url t)))
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442 (t
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443 (widen)
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444 (goto-char (point-max))
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445 (setq url-current-can-be-cached nil)
|
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446 (insert "<hr>Sorry, but I do not know how to handle " y
|
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|
447 " authentication. If you'd like to write it,"
|
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|
448 " send it to " url-bug-address ".<hr>")))))
|
|
|
449 ((= status 407) ; Proxy authentication required
|
|
|
450 (let* ((y (or (cdr (assoc "proxy-authenticate" result)) "basic"))
|
|
|
451 (url (url-view-url t))
|
|
|
452 (url-basic-auth-storage url-proxy-basic-authentication)
|
|
|
453 (type (downcase (if (string-match "[ \t]" y)
|
|
|
454 (substring y 0 (match-beginning 0))
|
|
|
455 y))))
|
|
|
456 (cond
|
|
|
457 ((or (equal "pem" type) (equal "pgp" type))
|
|
|
458 (if (string-match "entity=\"\\([^\"]+\\)\"" y)
|
|
|
459 (url-fetch-with-pgp url-current-file
|
|
|
460 (url-match y 1) (intern type))
|
|
|
461 (error "Could not find entity in %s!" type)))
|
|
|
462 ((url-auth-registered type)
|
|
|
463 (let ((args y)
|
|
|
464 (ctr (1- (length y)))
|
|
|
465 auth
|
|
|
466 (url-request-extra-headers url-request-extra-headers))
|
|
|
467 (while (/= 0 ctr)
|
|
|
468 (if (= ?, (aref args ctr))
|
|
|
469 (aset args ctr ?\;))
|
|
|
470 (setq ctr (1- ctr)))
|
|
|
471 (setq args (mm-parse-args y)
|
|
|
472 auth (url-get-authentication (or url-using-proxy url)
|
|
|
473 (cdr-safe
|
|
|
474 (assoc "realm" args))
|
|
|
475 type t args))
|
|
|
476 (if auth
|
|
|
477 (setq url-request-extra-headers
|
|
|
478 (cons (cons "Proxy-Authorization" auth)
|
|
|
479 url-request-extra-headers)))
|
|
|
480 (setq url-proxy-basic-authentication url-basic-auth-storage)
|
|
|
481 (url-retrieve url t)))
|
|
|
482 (t
|
|
|
483 (widen)
|
|
|
484 (goto-char (point-max))
|
|
|
485 (setq url-current-can-be-cached nil)
|
|
|
486 (insert "<hr>Sorry, but I do not know how to handle " y
|
|
|
487 " authentication. If you'd like to write it,"
|
|
|
488 " send it to " url-bug-address ".<hr>")))))
|
|
|
489 ;;((= status 400) nil) ; Bad request - syntax
|
|
|
490 ;;((= status 401) nil) ; Tried too many times
|
|
|
491 ;;((= status 402) nil) ; Payment required, retry w/Chargeto:
|
|
|
492 ;;((= status 403) nil) ; Access is forbidden
|
|
|
493 ;;((= status 404) nil) ; Not found...
|
|
|
494 ;;((= status 405) nil) ; Method not allowed
|
|
|
495 ;;((= status 406) nil) ; None acceptable
|
|
|
496 ;;((= status 408) nil) ; Request timeout
|
|
|
497 ;;((= status 409) nil) ; Conflict
|
|
|
498 ;;((= status 410) nil) ; Document is gone
|
|
|
499 ;;((= status 411) nil) ; Length required
|
|
|
500 ;;((= status 412) nil) ; Unless true
|
|
|
501 (t ; All others mena something hosed
|
|
|
502 (setq url-current-can-be-cached nil))))
|
|
|
503 ((= class 5)
|
|
|
504 ;;; (= status 504) ; Gateway timeout
|
|
|
505 ;;; (= status 503) ; Service unavailable
|
|
|
506 ;;; (= status 502) ; Bad gateway
|
|
|
507 ;;; (= status 501) ; Facility not supported
|
|
|
508 ;;; (= status 500) ; Internal server error
|
|
|
509 (setq url-current-can-be-cached nil))
|
|
|
510 ((= class 1)
|
|
|
511 (cond
|
|
|
512 ((or (= status 100) ; Continue
|
|
|
513 (= status 101)) ; Switching protocols
|
|
|
514 nil)))
|
|
|
515 (t
|
|
|
516 (setq url-current-can-be-cached nil)))
|
|
|
517 (widen)
|
|
|
518 status))
|
|
|
519
|
|
|
520 (defun url-mime-response-p (&optional switch-buff)
|
|
|
521 ;; Determine if the current buffer is a MIME response
|
|
|
522 (and switch-buff (set-buffer url-working-buffer))
|
|
|
523 (goto-char (point-min))
|
|
|
524 (skip-chars-forward " \t\n")
|
|
|
525 (and (looking-at "^HTTP/.+")))
|
|
|
526
|
|
|
527 (defsubst url-recreate-with-attributes (obj)
|
|
|
528 (if (url-attributes obj)
|
|
|
529 (concat (url-filename obj) ";"
|
|
|
530 (mapconcat
|
|
|
531 (function
|
|
|
532 (lambda (x)
|
|
|
533 (if (cdr x)
|
|
|
534 (concat (car x) "=" (cdr x))
|
|
|
535 (car x)))) (url-attributes obj) ";"))
|
|
|
536 (url-filename obj)))
|
|
|
537
|
|
|
538 (defun url-http (url &optional proxy-info)
|
|
|
539 ;; Retrieve URL via http.
|
|
|
540 (let* ((urlobj (url-generic-parse-url url))
|
|
|
541 (ref-url (or url-current-referer (url-view-url t))))
|
|
|
542 (url-clear-tmp-buffer)
|
|
|
543 (setq url-current-type (if (boundp 'url-this-is-ssl)
|
|
|
544 "https" "http"))
|
|
|
545 (let* ((server (url-host urlobj))
|
|
|
546 (port (url-port urlobj))
|
|
|
547 (file (or proxy-info (url-recreate-with-attributes urlobj)))
|
|
|
548 (dest (url-target urlobj))
|
|
|
549 request)
|
|
|
550 (if (equal port "") (setq port "80"))
|
|
|
551 (if (equal file "") (setq file "/"))
|
|
|
552 (if (not server)
|
|
|
553 (progn
|
|
|
554 (url-warn
|
|
|
555 'url
|
|
|
556 (eval-when-compile
|
|
|
557 (concat
|
|
|
558 "Malformed URL got passed into url-retrieve.\n"
|
|
|
559 "Either `url-expand-file-name' is broken in some\n"
|
|
|
560 "way, or an incorrect URL was manually entered (more likely)."
|
|
|
561 )))
|
|
|
562 (error "Malformed URL: `%s'" url)))
|
|
|
563 (if proxy-info
|
|
|
564 (let ((x (url-generic-parse-url url)))
|
|
|
565 (setq url-current-server (url-host urlobj)
|
|
|
566 url-current-port (url-port urlobj)
|
|
|
567 url-current-file (url-filename urlobj)
|
|
|
568 url-find-this-link (url-target urlobj)
|
|
|
569 request (url-create-mime-request file ref-url)))
|
|
|
570 (setq url-current-server server
|
|
|
571 url-current-port port
|
|
|
572 url-current-file file
|
|
|
573 url-find-this-link dest
|
|
|
574 request (url-create-mime-request file ref-url)))
|
|
|
575 (if (or (not (member port url-bad-port-list))
|
|
|
576 (funcall url-confirmation-func
|
|
|
577 (concat
|
|
|
578 "Warning! Trying to connect to port "
|
|
|
579 port
|
|
|
580 " - continue? ")))
|
|
|
581 (progn
|
|
|
582 (url-lazy-message "Contacting %s:%s" server port)
|
|
|
583 (let ((process
|
|
|
584 (url-open-stream "WWW" url-working-buffer server
|
|
|
585 (string-to-int port))))
|
|
|
586 (if (stringp process)
|
|
|
587 (progn
|
|
|
588 (set-buffer url-working-buffer)
|
|
|
589 (erase-buffer)
|
|
|
590 (setq url-current-mime-type "text/html"
|
|
|
591 url-current-mime-viewer
|
|
|
592 (mm-mime-info "text/html" nil 5))
|
|
|
593 (insert "<title>ERROR</title>\n"
|
|
|
594 "<h1>ERROR - Could not establish connection</h1>"
|
|
|
595 "<p>"
|
|
|
596 "The browser could not establish a connection "
|
|
|
597 (format "to %s:%s.<P>" server port)
|
|
|
598 "The server is either down, or the URL"
|
|
|
599 (format "(%s) is malformed.<p>" (url-view-url t)))
|
|
|
600 (message "%s" process))
|
|
|
601 (progn
|
|
|
602 (url-process-put process 'url (or proxy-info url))
|
|
|
603 (process-kill-without-query process)
|
|
|
604 (process-send-string process request)
|
|
|
605 (url-lazy-message "Request sent, waiting for response...")
|
|
82
|
606 (setq url-current-content-length nil)
|
|
|
607 (make-local-variable 'after-change-functions)
|
|
|
608 (add-hook 'after-change-functions 'url-after-change-function)
|
|
14
|
609 (if url-be-asynchronous
|
|
|
610 (set-process-sentinel process 'url-sentinel)
|
|
|
611 (unwind-protect
|
|
|
612 (save-excursion
|
|
|
613 (set-buffer url-working-buffer)
|
|
|
614 (while (memq (url-process-status process)
|
|
|
615 '(run open))
|
|
|
616 (url-accept-process-output process)))
|
|
|
617 (condition-case ()
|
|
|
618 (url-kill-process process)
|
|
|
619 (error nil))))
|
|
|
620 (if url-be-asynchronous
|
|
|
621 nil
|
|
|
622 (message "Retrieval complete.")
|
|
|
623 (remove-hook 'after-change-functions
|
|
|
624 'url-after-change-function))))))
|
|
|
625 (progn
|
|
|
626 (ding)
|
|
|
627 (url-warn 'security "Aborting connection to bad port..."))))))
|
|
|
628
|
|
|
629 (defun url-shttp (url)
|
|
|
630 ;; Retrieve a URL via Secure-HTTP
|
|
|
631 (error "Secure-HTTP not implemented yet."))
|
|
|
632
|
|
|
633 (defun url-https (url)
|
|
|
634 ;; Retrieve a URL via SSL
|
|
|
635 (condition-case ()
|
|
|
636 (require 'ssl)
|
|
|
637 (error (error "Not configured for SSL, please read the info pages.")))
|
|
|
638 (let ((url-this-is-ssl t)
|
|
|
639 (url-gateway-method 'ssl))
|
|
|
640 (url-http url)))
|
|
|
641
|
|
|
642 (provide 'url-http)
|
