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comparison lisp/url/url-misc.el @ 0:376386a54a3c r19-14

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date Mon, 13 Aug 2007 08:45:50 +0200
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1 ;;; url-misc.el,v --- Misc Uniform Resource Locator retrieval code
2 ;; Author: wmperry
3 ;; Created: 1995/11/19 18:46:45
4 ;; Version: 1.4
5 ;; Keywords: comm, data, processes
6
7 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
8 ;;; Copyright (c) 1993, 1994, 1995 by William M. Perry (wmperry@spry.com)
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
24 ;;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
25 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
26
27 (require 'url-vars)
28 (require 'url-parse)
29 (autoload 'Info-goto-node "info" "" t)
30
31 (defun url-info (url)
32 ;; Fetch an info node
33 (if (get-buffer url-working-buffer)
34 (kill-buffer url-working-buffer))
35 (let* ((data (url-generic-parse-url url))
36 (fname (url-filename data))
37 (node (or (url-target data) "Top")))
38 (if (and fname node)
39 (Info-goto-node (concat "(" fname ")" node))
40 (error "Malformed url: %s" url))))
41
42 (defun url-finger (url)
43 ;; Find a finger reference
44 (setq url-current-mime-headers '(("content-type" . "text/html"))
45 url-current-mime-type "text/html")
46 (set-buffer (get-buffer-create url-working-buffer))
47 (let* ((urlobj (if (vectorp url) url
48 (url-generic-parse-url url)))
49 (host (or (url-host urlobj) "localhost"))
50 (port (or (url-port urlobj)
51 (cdr-safe (assoc "finger" url-default-ports))))
52 (user (url-unhex-string (url-filename urlobj)))
53 (proc (url-open-stream "finger" url-working-buffer host
54 (string-to-int port))))
55 (if (stringp proc)
56 (message "%s" proc)
57 (process-kill-without-query proc)
58 (if (= (string-to-char user) ?/)
59 (setq user (substring user 1 nil)))
60 (goto-char (point-min))
61 (insert "<html>\n"
62 " <head>\n"
63 " <title>Finger information for " user "@" host "</title>\n"
64 " </head>\n"
65 " <body>\n"
66 " <h1>Finger information for " user "@" host "</h1>\n"
67 " <hr>\n"
68 " <pre>\n")
69 (process-send-string proc (concat user "\r\n"))
70 (while (memq (url-process-status proc) '(run open))
71 (url-after-change-function)
72 (url-accept-process-output proc))
73 (goto-char (point-min))
74 (url-replace-regexp "^Process .* exited .*code .*$" "")
75 (goto-char (point-max))
76 (insert " </pre>\n"
77 " </body>\n"
78 "</html>\n"))))
79
80 (defun url-rlogin (url)
81 ;; Open up an rlogin connection
82 (if (get-buffer url-working-buffer)
83 (kill-buffer url-working-buffer))
84 (or (string-match "rlogin:/*\\(.*@\\)*\\([^/]*\\)/*" url)
85 (error "Malformed RLOGIN URL."))
86 (let* ((server (substring url (match-beginning 2) (match-end 2)))
87 (name (if (match-beginning 1)
88 (substring url (match-beginning 1) (1- (match-end 1)))
89 nil))
90 (title (format "%s%s" (if name (concat name "@") "") server))
91 (thebuf (string-match ":" server))
92 (port (if thebuf
93 (prog1
94 (substring server (1+ thebuf) nil)
95 (setq server (substring server 0 thebuf))) "23")))
96 (cond
97 ((not (eq (device-type) 'tty))
98 (apply 'start-process
99 "htmlsub"
100 nil
101 (url-string-to-tokens
102 (format url-xterm-command title
103 (if (and url-gateway-local-host-regexp
104 (string-match url-gateway-local-host-regexp
105 server))
106 url-local-rlogin-prog
107 url-remote-rlogin-prog) server
108 (concat "-l " name)) ? )))
109 (url-use-transparent
110 (require 'transparent)
111 (sit-for 1)
112 (transparent-window (get-buffer-create
113 (format "%s%s:%s" (if name (concat name "@") "")
114 server port))
115 (if (and url-gateway-local-host-regexp
116 (string-match url-gateway-local-host-regexp
117 server))
118 url-local-rlogin-prog
119 url-remote-rlogin-prog)
120 (list server "-l" name) nil
121 "Press any key to return to emacs"))
122 (t
123 (terminal-emulator
124 (get-buffer-create (format "%s%s:%s" (if name (concat name "@") "")
125 server port))
126 (if (and url-gateway-local-host-regexp
127 (string-match url-gateway-local-host-regexp
128 server))
129 url-local-rlogin-prog
130 url-remote-rlogin-prog)
131 (list server "-l" name))))))
132
133 (defun url-telnet (url)
134 ;; Open up a telnet connection
135 (if (get-buffer url-working-buffer)
136 (kill-buffer url-working-buffer))
137 (or (string-match "telnet:/*\\(.*@\\)*\\([^/]*\\)/*" url)
138 (error "Malformed telnet URL: %s" url))
139 (let* ((server (substring url (match-beginning 2) (match-end 2)))
140 (name (if (match-beginning 1)
141 (substring url (match-beginning 1) (1- (match-end 1)))
142 nil))
143 (title (format "%s%s" (if name (concat name "@") "") server))
144 (thebuf (string-match ":" server))
145 (port (if thebuf
146 (prog1
147 (substring server (1+ thebuf) nil)
148 (setq server (substring server 0 thebuf))) "23")))
149 (cond
150 ((not (eq (device-type) 'tty))
151 (apply 'start-process
152 "htmlsub"
153 nil
154 (url-string-to-tokens
155 (format url-xterm-command title
156 (if (and url-gateway-local-host-regexp
157 (string-match url-gateway-local-host-regexp
158 server))
159 url-local-telnet-prog
160 url-remote-telnet-prog) server port) ? ))
161 (if name (message "Please log in as %s" name)))
162 (url-use-transparent
163 (require 'transparent)
164 (if name (message "Please log in as %s" name))
165 (sit-for 1)
166 (transparent-window (get-buffer-create
167 (format "%s%s:%s" (if name (concat name "@") "")
168 server port))
169 (if (and url-gateway-local-host-regexp
170 (string-match url-gateway-local-host-regexp
171 server))
172 url-local-telnet-prog
173 url-remote-telnet-prog)
174 (list server port) nil
175 "Press any key to return to emacs"))
176 (t
177 (terminal-emulator
178 (get-buffer-create (format "%s%s:%s" (if name (concat name "@") "")
179 server port))
180 (if (and url-gateway-local-host-regexp
181 (string-match url-gateway-local-host-regexp
182 server))
183 url-local-telnet-prog
184 url-remote-telnet-prog)
185 (list server port))
186 (if name (message "Please log in as %s" name))))))
187
188 (defun url-tn3270 (url)
189 ;; Open up a tn3270 connection
190 (if (get-buffer url-working-buffer)
191 (kill-buffer url-working-buffer))
192 (string-match "tn3270:/*\\(.*@\\)*\\([^/]*\\)/*" url)
193 (let* ((server (substring url (match-beginning 2) (match-end 2)))
194 (name (if (match-beginning 1)
195 (substring url (match-beginning 1) (1- (match-end 1)))
196 nil))
197 (thebuf (string-match ":" server))
198 (title (format "%s%s" (if name (concat name "@") "") server))
199 (port (if thebuf
200 (prog1
201 (substring server (1+ thebuf) nil)
202 (setq server (substring server 0 thebuf))) "23")))
203 (cond
204 ((not (eq (device-type) 'tty))
205 (start-process "htmlsub" nil url-xterm-command
206 "-title" title
207 "-ut" "-e" url-tn3270-emulator server port)
208 (if name (message "Please log in as %s" name)))
209 (url-use-transparent
210 (require 'transparent)
211 (if name (message "Please log in as %s" name))
212 (sit-for 1)
213 (transparent-window (get-buffer-create
214 (format "%s%s:%s" (if name (concat name "@") "")
215 server port))
216 url-tn3270-emulator
217 (list server port) nil
218 "Press any key to return to emacs"))
219 (t
220 (terminal-emulator
221 (get-buffer-create (format "%s%s:%s" (if name (concat name "@") "")
222 server port))
223 url-tn3270-emulator
224 (list server port))
225 (if name (message "Please log in as %s" name))))))
226
227 (defun url-proxy (url)
228 ;; Retrieve URL from a proxy.
229 ;; Expects `url-using-proxy' to be bound to the specific proxy to use."
230 (let (
231 (urlobj (url-generic-parse-url url))
232 (proxyobj (url-generic-parse-url url-using-proxy)))
233 (url-http url-using-proxy url)
234 (setq url-current-type (url-type urlobj)
235 url-current-user (url-user urlobj)
236 url-current-port (or (url-port urlobj)
237 (cdr-safe (assoc url-current-type
238 url-default-ports)))
239 url-current-server (url-host urlobj)
240 url-current-file (url-filename urlobj))))
241
242 (defun url-x-exec (url)
243 ;; Handle local execution of scripts.
244 (set-buffer (get-buffer-create url-working-buffer))
245 (erase-buffer)
246 (string-match "x-exec:/+\\([^/]+\\)\\(/.*\\)" url)
247 (let ((process-environment process-environment)
248 (executable (url-match url 1))
249 (path-info (url-match url 2))
250 (query-string nil)
251 (safe-paths url-local-exec-path)
252 (found nil)
253 (y nil)
254 )
255 (setq url-current-server executable
256 url-current-file path-info)
257 (if (string-match "\\(.*\\)\\?\\(.*\\)" path-info)
258 (setq query-string (url-match path-info 2)
259 path-info (url-match path-info 1)))
260 (while (and safe-paths (not found))
261 (setq y (expand-file-name executable (car safe-paths))
262 found (and (file-exists-p y) (file-executable-p y) y)
263 safe-paths (cdr safe-paths)))
264 (if (not found)
265 (url-retrieve (concat "www://error/nofile/" executable))
266 (setq process-environment
267 (append
268 (list
269 "SERVER_SOFTWARE=x-exec/1.0"
270 (concat "SERVER_NAME=" (system-name))
271 "GATEWAY_INTERFACE=CGI/1.1"
272 "SERVER_PROTOCOL=HTTP/1.0"
273 "SERVER_PORT="
274 (concat "REQUEST_METHOD=" url-request-method)
275 (concat "HTTP_ACCEPT="
276 (mapconcat
277 (function
278 (lambda (x)
279 (cond
280 ((= x ?\n) (setq y t) "")
281 ((= x ?:) (setq y nil) ",")
282 (t (char-to-string x))))) url-mime-accept-string
283 ""))
284 (concat "PATH_INFO=" (url-unhex-string path-info))
285 (concat "PATH_TRANSLATED=" (url-unhex-string path-info))
286 (concat "SCRIPT_NAME=" executable)
287 (concat "QUERY_STRING=" (url-unhex-string query-string))
288 (concat "REMOTE_HOST=" (system-name)))
289 (if (assoc "content-type" url-request-extra-headers)
290 (concat "CONTENT_TYPE=" (cdr
291 (assoc "content-type"
292 url-request-extra-headers))))
293 (if url-request-data
294 (concat "CONTENT_LENGTH=" (length url-request-data)))
295 process-environment))
296 (and url-request-data (insert url-request-data))
297 (setq y (call-process-region (point-min) (point-max) found t t))
298 (goto-char (point-min))
299 (delete-region (point) (progn (skip-chars-forward " \t\n") (point)))
300 (cond
301 ((url-mime-response-p) nil) ; Its already got an HTTP/1.0 header
302 ((null y) ; Weird exit status, whassup?
303 (insert "HTTP/1.0 404 Not Found\n"
304 "Server: " url-package-name "/x-exec\n"))
305 ((= 0 y) ; The shell command was successful
306 (insert "HTTP/1.0 200 Document follows\n"
307 "Server: " url-package-name "/x-exec\n"))
308 (t ; Non-zero exit status is bad bad bad
309 (insert "HTTP/1.0 404 Not Found\n"
310 "Server: " url-package-name "/x-exec\n"))))))
311
312 (provide 'url-misc)