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1 ;;; url-misc.el --- Misc Uniform Resource Locator retrieval code
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2 ;; Author: wmperry
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3 ;; Created: 1997/02/19 00:52:07
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4 ;; Version: 1.12
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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 (autoload 'Info-goto-node "info" "" t)
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32
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33 (defun url-info (url)
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34 ;; Fetch an info node
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35 (if (get-buffer url-working-buffer)
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36 (kill-buffer url-working-buffer))
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37 (let* ((data (url-generic-parse-url url))
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38 (fname (url-filename data))
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39 (node (url-unhex-string (or (url-target data) "Top"))))
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40 (if (and fname node)
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41 (Info-goto-node (concat "(" fname ")" node))
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42 (error "Malformed url: %s" url))))
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43
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44 (defun url-finger (url)
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45 ;; Find a finger reference
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46 (setq url-current-mime-headers '(("content-type" . "text/html"))
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47 url-current-mime-type "text/html")
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48 (set-buffer (get-buffer-create url-working-buffer))
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49 (let* ((urlobj (if (vectorp url) url
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50 (url-generic-parse-url url)))
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51 (host (or (url-host urlobj) "localhost"))
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52 (port (or (url-port urlobj)
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53 (cdr-safe (assoc "finger" url-default-ports))))
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54 (user (url-unhex-string (url-filename urlobj)))
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55 (proc (url-open-stream "finger" url-working-buffer host
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56 (string-to-int port))))
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57 (if (not (processp proc))
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58 nil
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59 (process-kill-without-query proc)
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60 (if (= (string-to-char user) ?/)
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61 (setq user (substring user 1 nil)))
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62 (goto-char (point-min))
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63 (insert "<html>\n"
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64 " <head>\n"
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65 " <title>Finger information for " user "@" host "</title>\n"
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66 " </head>\n"
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67 " <body>\n"
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68 " <h1>Finger information for " user "@" host "</h1>\n"
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69 " <hr>\n"
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70 " <pre>\n")
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71 (process-send-string proc (concat user "\r\n"))
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72 (while (memq (url-process-status proc) '(run open))
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73 (url-after-change-function)
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74 (url-accept-process-output proc))
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75 (goto-char (point-min))
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76 (url-replace-regexp "^Process .* exited .*code .*$" "")
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77 (goto-char (point-max))
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78 (insert " </pre>\n"
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79 " </body>\n"
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80 "</html>\n"))))
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81
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82 (defun url-do-terminal-emulator (type server port user)
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83 (terminal-emulator
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84 (generate-new-buffer (format "%s%s" (if user (concat user "@") "") server))
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85 (case type
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86 (rlogin "rlogin")
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87 (telnet "telnet")
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88 (tn3270 "tn3270")
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89 (otherwise
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90 (error "Unknown terminal emulator required: %s" type)))
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91 (if user
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92 (case type
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93 (rlogin
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94 (list server "-l" user))
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95 (telnet
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96 (if user (message "Please log in as user: %s" user))
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97 (if port
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98 (list server port)
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99 (list server)))
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100 (tn3270
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101 (if user (message "Please log in as user: %s" user))
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102 (list server))))))
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103
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104 (defun url-generic-emulator-loader (url)
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105 (if (get-buffer url-working-buffer)
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106 (kill-buffer url-working-buffer))
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107 (or (string-match "^\\([^:]+\\):/*\\(.*@\\)*\\([^/]*\\)/*" url)
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108 (error "Invalid URL: %s" url))
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109 (let* ((type (intern (downcase (match-string 1 url))))
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110 (server (match-string 3 url))
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111 (name (if (match-beginning 2)
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112 (substring url (match-beginning 2) (1- (match-end 2)))))
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113 (port (if (string-match ":" server)
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114 (prog1
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115 (substring server (match-end 0))
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116 (setq server (substring server 0 (match-beginning 0)))))))
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117 (url-do-terminal-emulator type server port name)))
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118
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119 (fset 'url-rlogin 'url-generic-emulator-loader)
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120 (fset 'url-telnet 'url-generic-emulator-loader)
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121 (fset 'url-tn3270 'url-generic-emulator-loader)
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122
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123 (defun url-proxy (url)
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124 ;; Retrieve URL from a proxy.
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125 ;; Expects `url-using-proxy' to be bound to the specific proxy to use."
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126 (let (
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127 (urlobj (url-generic-parse-url url))
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128 (proxyobj (url-generic-parse-url url-using-proxy)))
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129 (url-http url-using-proxy url)))
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130
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131 ;; ftp://ietf.org/internet-drafts/draft-masinter-url-data-02.txt
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132 (defun url-data (url)
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133 (set-buffer (get-buffer-create url-working-buffer))
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134 (let ((content-type nil)
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135 (encoding nil)
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136 (data nil))
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137 (cond
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138 ((string-match "^data:\\([^;,]*\\);*\\([^,]*\\)," url)
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139 (setq content-type (match-string 1 url)
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140 encoding (match-string 2 url)
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141 data (url-unhex-string (substring url (match-end 0))))
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142 (if (= 0 (length content-type)) (setq content-type "text/plain"))
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143 (if (= 0 (length encoding)) (setq encoding "8bit")))
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144 (t nil))
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145 (setq url-current-content-length (length data)
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146 url-current-mime-type content-type
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147 url-current-mime-encoding encoding
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148 url-current-mime-headers (list (cons "content-type" content-type)
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149 (cons "content-encoding" encoding)))
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150 (and data (insert data))))
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151
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152 (provide 'url-misc)
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