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comparison lisp/w3/url-misc.el @ 80:1ce6082ce73f r20-0b90

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Import from CVS: tag r20-0b90
author cvs
date Mon, 13 Aug 2007 09:06:37 +0200
parents 9ee227acff29
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79:5b0a5bbffab6 80:1ce6082ce73f
1 ;;; url-misc.el --- Misc Uniform Resource Locator retrieval code
2 ;; Author: wmperry
3 ;; Created: 1996/10/09 19:00:59
4 ;; Version: 1.3
5 ;; Keywords: comm, data, processes
6
7 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
8 ;;; Copyright (c) 1993 - 1996 by William M. Perry (wmperry@cs.indiana.edu)
9 ;;;
10 ;;; This file is not part of GNU Emacs, but the same permissions apply.
11 ;;;
12 ;;; GNU Emacs is free software; you can redistribute it and/or modify
13 ;;; it under the terms of the GNU General Public License as published by
14 ;;; the Free Software Foundation; either version 2, or (at your option)
15 ;;; any later version.
16 ;;;
17 ;;; GNU Emacs is distributed in the hope that it will be useful,
18 ;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
19 ;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 ;;; GNU General Public License for more details.
21 ;;;
22 ;;; You should have received a copy of the GNU General Public License
23 ;;; along with GNU Emacs; see the file COPYING. If not, write to the
24 ;;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
25 ;;; Boston, MA 02111-1307, USA.
26 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
27
28 (require 'url-vars)
29 (require 'url-parse)
30 (autoload 'Info-goto-node "info" "" t)
31
32 (defun url-info (url)
33 ;; Fetch an info node
34 (if (get-buffer url-working-buffer)
35 (kill-buffer url-working-buffer))
36 (let* ((data (url-generic-parse-url url))
37 (fname (url-filename data))
38 (node (or (url-target data) "Top")))
39 (if (and fname node)
40 (Info-goto-node (concat "(" fname ")" node))
41 (error "Malformed url: %s" url))))
42
43 (defun url-finger (url)
44 ;; Find a finger reference
45 (setq url-current-mime-headers '(("content-type" . "text/html"))
46 url-current-mime-type "text/html")
47 (set-buffer (get-buffer-create url-working-buffer))
48 (let* ((urlobj (if (vectorp url) url
49 (url-generic-parse-url url)))
50 (host (or (url-host urlobj) "localhost"))
51 (port (or (url-port urlobj)
52 (cdr-safe (assoc "finger" url-default-ports))))
53 (user (url-unhex-string (url-filename urlobj)))
54 (proc (url-open-stream "finger" url-working-buffer host
55 (string-to-int port))))
56 (if (stringp proc)
57 (message "%s" proc)
58 (process-kill-without-query proc)
59 (if (= (string-to-char user) ?/)
60 (setq user (substring user 1 nil)))
61 (goto-char (point-min))
62 (insert "<html>\n"
63 " <head>\n"
64 " <title>Finger information for " user "@" host "</title>\n"
65 " </head>\n"
66 " <body>\n"
67 " <h1>Finger information for " user "@" host "</h1>\n"
68 " <hr>\n"
69 " <pre>\n")
70 (process-send-string proc (concat user "\r\n"))
71 (while (memq (url-process-status proc) '(run open))
72 (url-after-change-function)
73 (url-accept-process-output proc))
74 (goto-char (point-min))
75 (url-replace-regexp "^Process .* exited .*code .*$" "")
76 (goto-char (point-max))
77 (insert " </pre>\n"
78 " </body>\n"
79 "</html>\n"))))
80
81 (defun url-rlogin (url)
82 ;; Open up an rlogin connection
83 (if (get-buffer url-working-buffer)
84 (kill-buffer url-working-buffer))
85 (or (string-match "rlogin:/*\\(.*@\\)*\\([^/]*\\)/*" url)
86 (error "Malformed RLOGIN URL."))
87 (let* ((server (substring url (match-beginning 2) (match-end 2)))
88 (name (if (match-beginning 1)
89 (substring url (match-beginning 1) (1- (match-end 1)))
90 nil))
91 (title (format "%s%s" (if name (concat name "@") "") server))
92 (thebuf (string-match ":" server))
93 (port (if thebuf
94 (prog1
95 (substring server (1+ thebuf) nil)
96 (setq server (substring server 0 thebuf))) "23")))
97 (cond
98 ((not (eq (device-type) 'tty))
99 (apply 'start-process
100 "htmlsub"
101 nil
102 (url-string-to-tokens
103 (format url-xterm-command title
104 (if (and url-gateway-local-host-regexp
105 (string-match url-gateway-local-host-regexp
106 server))
107 url-local-rlogin-prog
108 url-remote-rlogin-prog) server
109 (concat "-l " name)) ? )))
110 (url-use-transparent
111 (require 'transparent)
112 (sit-for 1)
113 (transparent-window (get-buffer-create
114 (format "%s%s:%s" (if name (concat name "@") "")
115 server port))
116 (if (and url-gateway-local-host-regexp
117 (string-match url-gateway-local-host-regexp
118 server))
119 url-local-rlogin-prog
120 url-remote-rlogin-prog)
121 (list server "-l" name) nil
122 "Press any key to return to emacs"))
123 (t
124 (terminal-emulator
125 (get-buffer-create (format "%s%s:%s" (if name (concat name "@") "")
126 server port))
127 (if (and url-gateway-local-host-regexp
128 (string-match url-gateway-local-host-regexp
129 server))
130 url-local-rlogin-prog
131 url-remote-rlogin-prog)
132 (list server "-l" name))))))
133
134 (defun url-telnet (url)
135 ;; Open up a telnet connection
136 (if (get-buffer url-working-buffer)
137 (kill-buffer url-working-buffer))
138 (or (string-match "telnet:/*\\(.*@\\)*\\([^/]*\\)/*" url)
139 (error "Malformed telnet URL: %s" url))
140 (let* ((server (substring url (match-beginning 2) (match-end 2)))
141 (name (if (match-beginning 1)
142 (substring url (match-beginning 1) (1- (match-end 1)))
143 nil))
144 (title (format "%s%s" (if name (concat name "@") "") server))
145 (thebuf (string-match ":" server))
146 (port (if thebuf
147 (prog1
148 (substring server (1+ thebuf) nil)
149 (setq server (substring server 0 thebuf))) "23")))
150 (cond
151 ((not (eq (device-type) 'tty))
152 (apply 'start-process
153 "htmlsub"
154 nil
155 (url-string-to-tokens
156 (format url-xterm-command title
157 (if (and url-gateway-local-host-regexp
158 (string-match url-gateway-local-host-regexp
159 server))
160 url-local-telnet-prog
161 url-remote-telnet-prog) server port) ? ))
162 (if name (message "Please log in as %s" name)))
163 (url-use-transparent
164 (require 'transparent)
165 (if name (message "Please log in as %s" name))
166 (sit-for 1)
167 (transparent-window (get-buffer-create
168 (format "%s%s:%s" (if name (concat name "@") "")
169 server port))
170 (if (and url-gateway-local-host-regexp
171 (string-match url-gateway-local-host-regexp
172 server))
173 url-local-telnet-prog
174 url-remote-telnet-prog)
175 (list server port) nil
176 "Press any key to return to emacs"))
177 (t
178 (terminal-emulator
179 (get-buffer-create (format "%s%s:%s" (if name (concat name "@") "")
180 server port))
181 (if (and url-gateway-local-host-regexp
182 (string-match url-gateway-local-host-regexp
183 server))
184 url-local-telnet-prog
185 url-remote-telnet-prog)
186 (list server port))
187 (if name (message "Please log in as %s" name))))))
188
189 (defun url-tn3270 (url)
190 ;; Open up a tn3270 connection
191 (if (get-buffer url-working-buffer)
192 (kill-buffer url-working-buffer))
193 (string-match "tn3270:/*\\(.*@\\)*\\([^/]*\\)/*" url)
194 (let* ((server (substring url (match-beginning 2) (match-end 2)))
195 (name (if (match-beginning 1)
196 (substring url (match-beginning 1) (1- (match-end 1)))
197 nil))
198 (thebuf (string-match ":" server))
199 (title (format "%s%s" (if name (concat name "@") "") server))
200 (port (if thebuf
201 (prog1
202 (substring server (1+ thebuf) nil)
203 (setq server (substring server 0 thebuf))) "23")))
204 (cond
205 ((not (eq (device-type) 'tty))
206 (start-process "htmlsub" nil url-xterm-command
207 "-title" title
208 "-ut" "-e" url-tn3270-emulator server port)
209 (if name (message "Please log in as %s" name)))
210 (url-use-transparent
211 (require 'transparent)
212 (if name (message "Please log in as %s" name))
213 (sit-for 1)
214 (transparent-window (get-buffer-create
215 (format "%s%s:%s" (if name (concat name "@") "")
216 server port))
217 url-tn3270-emulator
218 (list server port) nil
219 "Press any key to return to emacs"))
220 (t
221 (terminal-emulator
222 (get-buffer-create (format "%s%s:%s" (if name (concat name "@") "")
223 server port))
224 url-tn3270-emulator
225 (list server port))
226 (if name (message "Please log in as %s" name))))))
227
228 (defun url-proxy (url)
229 ;; Retrieve URL from a proxy.
230 ;; Expects `url-using-proxy' to be bound to the specific proxy to use."
231 (let (
232 (urlobj (url-generic-parse-url url))
233 (proxyobj (url-generic-parse-url url-using-proxy)))
234 (url-http url-using-proxy url)
235 (setq url-current-type (url-type urlobj)
236 url-current-user (url-user urlobj)
237 url-current-port (or (url-port urlobj)
238 (cdr-safe (assoc url-current-type
239 url-default-ports)))
240 url-current-server (url-host urlobj)
241 url-current-file (url-filename urlobj))))
242
243 (defun url-x-exec (url)
244 ;; Handle local execution of scripts.
245 (set-buffer (get-buffer-create url-working-buffer))
246 (erase-buffer)
247 (string-match "x-exec:/+\\([^/]+\\)\\(/.*\\)" url)
248 (let ((process-environment process-environment)
249 (executable (url-match url 1))
250 (path-info (url-match url 2))
251 (query-string nil)
252 (safe-paths url-local-exec-path)
253 (found nil)
254 (y nil)
255 )
256 (setq url-current-server executable
257 url-current-file path-info)
258 (if (string-match "\\(.*\\)\\?\\(.*\\)" path-info)
259 (setq query-string (url-match path-info 2)
260 path-info (url-match path-info 1)))
261 (while (and safe-paths (not found))
262 (setq y (expand-file-name executable (car safe-paths))
263 found (and (file-exists-p y) (file-executable-p y) y)
264 safe-paths (cdr safe-paths)))
265 (if (not found)
266 (url-retrieve (concat "www://error/nofile/" executable))
267 (setq process-environment
268 (append
269 (list
270 "SERVER_SOFTWARE=x-exec/1.0"
271 (concat "SERVER_NAME=" (system-name))
272 "GATEWAY_INTERFACE=CGI/1.1"
273 "SERVER_PROTOCOL=HTTP/1.0"
274 "SERVER_PORT="
275 (concat "REQUEST_METHOD=" url-request-method)
276 (concat "HTTP_ACCEPT="
277 (mapconcat
278 (function
279 (lambda (x)
280 (cond
281 ((= x ?\n) (setq y t) "")
282 ((= x ?:) (setq y nil) ",")
283 (t (char-to-string x))))) url-mime-accept-string
284 ""))
285 (concat "PATH_INFO=" (url-unhex-string path-info))
286 (concat "PATH_TRANSLATED=" (url-unhex-string path-info))
287 (concat "SCRIPT_NAME=" executable)
288 (concat "QUERY_STRING=" (url-unhex-string query-string))
289 (concat "REMOTE_HOST=" (system-name)))
290 (if (assoc "content-type" url-request-extra-headers)
291 (concat "CONTENT_TYPE=" (cdr
292 (assoc "content-type"
293 url-request-extra-headers))))
294 (if url-request-data
295 (concat "CONTENT_LENGTH=" (length url-request-data)))
296 process-environment))
297 (and url-request-data (insert url-request-data))
298 (setq y (call-process-region (point-min) (point-max) found t t))
299 (goto-char (point-min))
300 (delete-region (point) (progn (skip-chars-forward " \t\n") (point)))
301 (cond
302 ((url-mime-response-p) nil) ; Its already got an HTTP/1.0 header
303 ((null y) ; Weird exit status, whassup?
304 (insert "HTTP/1.0 404 Not Found\n"
305 "Server: " url-package-name "/x-exec\n"))
306 ((= 0 y) ; The shell command was successful
307 (insert "HTTP/1.0 200 Document follows\n"
308 "Server: " url-package-name "/x-exec\n"))
309 (t ; Non-zero exit status is bad bad bad
310 (insert "HTTP/1.0 404 Not Found\n"
311 "Server: " url-package-name "/x-exec\n"))))))
312
313 (provide 'url-misc)