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8c8b8430 | 1 | ;;; url-http.el --- HTTP retrieval routines |
b43eb9ab | 2 | |
ba318903 | 3 | ;; Copyright (C) 1999, 2001, 2004-2014 Free Software Foundation, Inc. |
b43eb9ab | 4 | |
8c8b8430 | 5 | ;; Author: Bill Perry <wmperry@gnu.org> |
93a583ee | 6 | ;; Maintainer: emacs-devel@gnu.org |
8c8b8430 | 7 | ;; Keywords: comm, data, processes |
3f19601e | 8 | |
b43eb9ab SM |
9 | ;; This file is part of GNU Emacs. |
10 | ;; | |
4936186e | 11 | ;; GNU Emacs is free software: you can redistribute it and/or modify |
b43eb9ab | 12 | ;; it under the terms of the GNU General Public License as published by |
4936186e GM |
13 | ;; the Free Software Foundation, either version 3 of the License, or |
14 | ;; (at your option) any later version. | |
15 | ||
b43eb9ab SM |
16 | ;; GNU Emacs is distributed in the hope that it will be useful, |
17 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | ;; GNU General Public License for more details. | |
4936186e | 20 | |
b43eb9ab | 21 | ;; You should have received a copy of the GNU General Public License |
4936186e | 22 | ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. |
8c8b8430 | 23 | |
b43eb9ab SM |
24 | ;;; Commentary: |
25 | ||
26 | ;;; Code: | |
8c8b8430 | 27 | |
a464a6c7 SM |
28 | (eval-when-compile (require 'cl-lib)) |
29 | ||
30 | (defvar url-callback-arguments) | |
31 | (defvar url-callback-function) | |
32 | (defvar url-current-object) | |
33 | (defvar url-http-after-change-function) | |
34 | (defvar url-http-chunked-counter) | |
35 | (defvar url-http-chunked-length) | |
36 | (defvar url-http-chunked-start) | |
37 | (defvar url-http-connection-opened) | |
38 | (defvar url-http-content-length) | |
39 | (defvar url-http-content-type) | |
40 | (defvar url-http-data) | |
41 | (defvar url-http-end-of-headers) | |
12f1edc8 | 42 | (defvar url-http-extra-headers) |
a464a6c7 | 43 | (defvar url-http-method) |
09100633 | 44 | (defvar url-http-no-retry) |
a464a6c7 | 45 | (defvar url-http-process) |
62bfb5bb | 46 | (defvar url-http-proxy) |
a464a6c7 SM |
47 | (defvar url-http-response-status) |
48 | (defvar url-http-response-version) | |
49 | (defvar url-http-target-url) | |
50 | (defvar url-http-transfer-encoding) | |
a464a6c7 SM |
51 | (defvar url-show-status) |
52 | ||
8c8b8430 | 53 | (require 'url-gw) |
8c8b8430 SM |
54 | (require 'url-parse) |
55 | (require 'url-cookie) | |
56 | (require 'mail-parse) | |
57 | (require 'url-auth) | |
55d1d8b7 | 58 | (require 'url) |
8c8b8430 | 59 | (autoload 'url-cache-create-filename "url-cache") |
8c8b8430 SM |
60 | |
61 | (defconst url-http-default-port 80 "Default HTTP port.") | |
62 | (defconst url-http-asynchronous-p t "HTTP retrievals are asynchronous.") | |
63 | (defalias 'url-http-expand-file-name 'url-default-expander) | |
64 | ||
65 | (defvar url-http-real-basic-auth-storage nil) | |
66 | (defvar url-http-proxy-basic-auth-storage nil) | |
67 | ||
68 | (defvar url-http-open-connections (make-hash-table :test 'equal | |
69 | :size 17) | |
70 | "A hash table of all open network connections.") | |
71 | ||
72 | (defvar url-http-version "1.1" | |
73 | "What version of HTTP we advertise, as a string. | |
74 | Valid values are 1.1 and 1.0. | |
75 | This is only useful when debugging the HTTP subsystem. | |
76 | ||
77 | Setting this to 1.0 will tell servers not to send chunked encoding, | |
55d1d8b7 | 78 | and other HTTP/1.1 specific features.") |
8c8b8430 SM |
79 | |
80 | (defvar url-http-attempt-keepalives t | |
81 | "Whether to use a single TCP connection multiple times in HTTP. | |
82 | This is only useful when debugging the HTTP subsystem. Setting to | |
55d1d8b7 SM |
83 | nil will explicitly close the connection to the server after every |
84 | request.") | |
8c8b8430 | 85 | |
1e9d758c TZ |
86 | (defconst url-http-codes |
87 | '((100 continue "Continue with request") | |
88 | (101 switching-protocols "Switching protocols") | |
89 | (102 processing "Processing (Added by DAV)") | |
90 | (200 OK "OK") | |
91 | (201 created "Created") | |
92 | (202 accepted "Accepted") | |
93 | (203 non-authoritative "Non-authoritative information") | |
94 | (204 no-content "No content") | |
95 | (205 reset-content "Reset content") | |
96 | (206 partial-content "Partial content") | |
97 | (207 multi-status "Multi-status (Added by DAV)") | |
98 | (300 multiple-choices "Multiple choices") | |
99 | (301 moved-permanently "Moved permanently") | |
100 | (302 found "Found") | |
101 | (303 see-other "See other") | |
102 | (304 not-modified "Not modified") | |
103 | (305 use-proxy "Use proxy") | |
104 | (307 temporary-redirect "Temporary redirect") | |
105 | (400 bad-request "Bad Request") | |
106 | (401 unauthorized "Unauthorized") | |
107 | (402 payment-required "Payment required") | |
108 | (403 forbidden "Forbidden") | |
109 | (404 not-found "Not found") | |
110 | (405 method-not-allowed "Method not allowed") | |
111 | (406 not-acceptable "Not acceptable") | |
112 | (407 proxy-authentication-required "Proxy authentication required") | |
113 | (408 request-timeout "Request time-out") | |
114 | (409 conflict "Conflict") | |
115 | (410 gone "Gone") | |
116 | (411 length-required "Length required") | |
117 | (412 precondition-failed "Precondition failed") | |
118 | (413 request-entity-too-large "Request entity too large") | |
119 | (414 request-uri-too-large "Request-URI too large") | |
120 | (415 unsupported-media-type "Unsupported media type") | |
121 | (416 requested-range-not-satisfiable "Requested range not satisfiable") | |
122 | (417 expectation-failed "Expectation failed") | |
123 | (422 unprocessable-entity "Unprocessable Entity (Added by DAV)") | |
124 | (423 locked "Locked") | |
125 | (424 failed-Dependency "Failed Dependency") | |
126 | (500 internal-server-error "Internal server error") | |
127 | (501 not-implemented "Not implemented") | |
128 | (502 bad-gateway "Bad gateway") | |
129 | (503 service-unavailable "Service unavailable") | |
130 | (504 gateway-timeout "Gateway time-out") | |
131 | (505 http-version-not-supported "HTTP version not supported") | |
9979ea1c LL |
132 | (507 insufficient-storage "Insufficient storage")) |
133 | "The HTTP return codes and their text.") | |
1e9d758c | 134 | |
8c8b8430 SM |
135 | ;(eval-when-compile |
136 | ;; These are all macros so that they are hidden from external sight | |
137 | ;; when the file is byte-compiled. | |
138 | ;; | |
139 | ;; This allows us to expose just the entry points we want. | |
140 | ||
141 | ;; These routines will allow us to implement persistent HTTP | |
142 | ;; connections. | |
143 | (defsubst url-http-debug (&rest args) | |
144 | (if quit-flag | |
145 | (let ((proc (get-buffer-process (current-buffer)))) | |
146 | ;; The user hit C-g, honor it! Some things can get in an | |
147 | ;; incredibly tight loop (chunked encoding) | |
148 | (if proc | |
149 | (progn | |
150 | (set-process-sentinel proc nil) | |
151 | (set-process-filter proc nil))) | |
152 | (error "Transfer interrupted!"))) | |
153 | (apply 'url-debug 'http args)) | |
154 | ||
155 | (defun url-http-mark-connection-as-busy (host port proc) | |
156 | (url-http-debug "Marking connection as busy: %s:%d %S" host port proc) | |
8ae85a27 | 157 | (set-process-query-on-exit-flag proc t) |
8c8b8430 SM |
158 | (puthash (cons host port) |
159 | (delq proc (gethash (cons host port) url-http-open-connections)) | |
160 | url-http-open-connections) | |
161 | proc) | |
162 | ||
163 | (defun url-http-mark-connection-as-free (host port proc) | |
164 | (url-http-debug "Marking connection as free: %s:%d %S" host port proc) | |
db8d5936 | 165 | (when (memq (process-status proc) '(open run connect)) |
5695d1dd CY |
166 | (set-process-buffer proc nil) |
167 | (set-process-sentinel proc 'url-http-idle-sentinel) | |
8ae85a27 | 168 | (set-process-query-on-exit-flag proc nil) |
5695d1dd CY |
169 | (puthash (cons host port) |
170 | (cons proc (gethash (cons host port) url-http-open-connections)) | |
171 | url-http-open-connections)) | |
8c8b8430 SM |
172 | nil) |
173 | ||
174 | (defun url-http-find-free-connection (host port) | |
175 | (let ((conns (gethash (cons host port) url-http-open-connections)) | |
179f6911 DSM |
176 | (connection nil)) |
177 | (while (and conns (not connection)) | |
db8d5936 | 178 | (if (not (memq (process-status (car conns)) '(run open connect))) |
8c8b8430 SM |
179 | (progn |
180 | (url-http-debug "Cleaning up dead process: %s:%d %S" | |
181 | host port (car conns)) | |
182 | (url-http-idle-sentinel (car conns) nil)) | |
179f6911 DSM |
183 | (setq connection (car conns)) |
184 | (url-http-debug "Found existing connection: %s:%d %S" host port connection)) | |
8c8b8430 | 185 | (pop conns)) |
179f6911 | 186 | (if connection |
8c8b8430 SM |
187 | (url-http-debug "Reusing existing connection: %s:%d" host port) |
188 | (url-http-debug "Contacting host: %s:%d" host port)) | |
189 | (url-lazy-message "Contacting host: %s:%d" host port) | |
179f6911 DSM |
190 | |
191 | (unless connection | |
192 | (let ((buf (generate-new-buffer " *url-http-temp*"))) | |
193 | ;; `url-open-stream' needs a buffer in which to do things | |
194 | ;; like authentication. But we use another buffer afterwards. | |
195 | (unwind-protect | |
196 | (let ((proc (url-open-stream host buf host port))) | |
197 | ;; url-open-stream might return nil. | |
198 | (when (processp proc) | |
199 | ;; Drop the temp buffer link before killing the buffer. | |
200 | (set-process-buffer proc nil) | |
201 | (setq connection proc))) | |
202 | ;; If there was an error on connect, make sure we don't | |
203 | ;; get queried. | |
204 | (when (get-buffer-process buf) | |
205 | (set-process-query-on-exit-flag (get-buffer-process buf) nil)) | |
206 | (kill-buffer buf)))) | |
207 | ||
208 | (if connection | |
209 | (url-http-mark-connection-as-busy host port connection)))) | |
8c8b8430 SM |
210 | |
211 | ;; Building an HTTP request | |
212 | (defun url-http-user-agent-string () | |
213 | (if (or (eq url-privacy-level 'paranoid) | |
214 | (and (listp url-privacy-level) | |
215 | (memq 'agent url-privacy-level))) | |
216 | "" | |
e79186e5 | 217 | (format "User-Agent: %sURL/%s\r\n" |
8c8b8430 SM |
218 | (if url-package-name |
219 | (concat url-package-name "/" url-package-version " ") | |
220 | "") | |
e79186e5 | 221 | url-version))) |
8c8b8430 | 222 | |
9450f124 MH |
223 | (defun url-http-create-request (&optional ref-url) |
224 | "Create an HTTP request for `url-http-target-url', referred to by REF-URL." | |
8c8b8430 SM |
225 | (let* ((extra-headers) |
226 | (request nil) | |
8ea88265 | 227 | (no-cache (cdr-safe (assoc "Pragma" url-http-extra-headers))) |
62bfb5bb | 228 | (using-proxy url-http-proxy) |
8c8b8430 | 229 | (proxy-auth (if (or (cdr-safe (assoc "Proxy-Authorization" |
8ea88265 | 230 | url-http-extra-headers)) |
9450f124 | 231 | (not using-proxy)) |
8c8b8430 SM |
232 | nil |
233 | (let ((url-basic-auth-storage | |
234 | 'url-http-proxy-basic-auth-storage)) | |
4ed1626d | 235 | (url-get-authentication url-http-proxy nil 'any nil)))) |
ce7b18ec | 236 | (real-fname (url-filename url-http-target-url)) |
9450f124 | 237 | (host (url-host url-http-target-url)) |
8ea88265 | 238 | (auth (if (cdr-safe (assoc "Authorization" url-http-extra-headers)) |
8c8b8430 SM |
239 | nil |
240 | (url-get-authentication (or | |
241 | (and (boundp 'proxy-info) | |
242 | proxy-info) | |
9450f124 | 243 | url-http-target-url) nil 'any nil)))) |
8c8b8430 SM |
244 | (if (equal "" real-fname) |
245 | (setq real-fname "/")) | |
246 | (setq no-cache (and no-cache (string-match "no-cache" no-cache))) | |
247 | (if auth | |
248 | (setq auth (concat "Authorization: " auth "\r\n"))) | |
249 | (if proxy-auth | |
250 | (setq proxy-auth (concat "Proxy-Authorization: " proxy-auth "\r\n"))) | |
251 | ||
fac916bf | 252 | ;; Protection against stupid values in the referrer |
8c8b8430 SM |
253 | (if (and ref-url (stringp ref-url) (or (string= ref-url "file:nil") |
254 | (string= ref-url ""))) | |
255 | (setq ref-url nil)) | |
256 | ||
fac916bf | 257 | ;; We do not want to expose the referrer if the user is paranoid. |
8c8b8430 SM |
258 | (if (or (memq url-privacy-level '(low high paranoid)) |
259 | (and (listp url-privacy-level) | |
260 | (memq 'lastloc url-privacy-level))) | |
261 | (setq ref-url nil)) | |
262 | ||
8ea88265 | 263 | ;; url-http-extra-headers contains an assoc-list of |
8c8b8430 SM |
264 | ;; header/value pairs that we need to put into the request. |
265 | (setq extra-headers (mapconcat | |
266 | (lambda (x) | |
267 | (concat (car x) ": " (cdr x))) | |
8ea88265 | 268 | url-http-extra-headers "\r\n")) |
8c8b8430 SM |
269 | (if (not (equal extra-headers "")) |
270 | (setq extra-headers (concat extra-headers "\r\n"))) | |
271 | ||
fe3c5669 | 272 | ;; This was done with a call to `format'. Concatenating parts has |
1430e7f9 | 273 | ;; the advantage of keeping the parts of each header together and |
8c8b8430 SM |
274 | ;; allows us to elide null lines directly, at the cost of making |
275 | ;; the layout less clear. | |
276 | (setq request | |
1430e7f9 SM |
277 | ;; We used to concat directly, but if one of the strings happens |
278 | ;; to being multibyte (even if it only contains pure ASCII) then | |
279 | ;; every string gets converted with `string-MAKE-multibyte' which | |
280 | ;; turns the 127-255 codes into things like latin-1 accented chars | |
281 | ;; (it would work right if it used `string-TO-multibyte' instead). | |
282 | ;; So to avoid the problem we force every string to be unibyte. | |
283 | (mapconcat | |
284 | ;; FIXME: Instead of `string-AS-unibyte' we'd want | |
285 | ;; `string-to-unibyte', so as to properly signal an error if one | |
286 | ;; of the strings contains a multibyte char. | |
287 | 'string-as-unibyte | |
288 | (delq nil | |
289 | (list | |
290 | ;; The request | |
8ea88265 | 291 | (or url-http-method "GET") " " |
9450f124 | 292 | (if using-proxy (url-recreate-url url-http-target-url) real-fname) |
1430e7f9 SM |
293 | " HTTP/" url-http-version "\r\n" |
294 | ;; Version of MIME we speak | |
295 | "MIME-Version: 1.0\r\n" | |
296 | ;; (maybe) Try to keep the connection open | |
9450f124 | 297 | "Connection: " (if (or using-proxy |
1430e7f9 SM |
298 | (not url-http-attempt-keepalives)) |
299 | "close" "keep-alive") "\r\n" | |
300 | ;; HTTP extensions we support | |
301 | (if url-extensions-header | |
302 | (format | |
303 | "Extension: %s\r\n" url-extensions-header)) | |
304 | ;; Who we want to talk to | |
9450f124 | 305 | (if (/= (url-port url-http-target-url) |
1430e7f9 | 306 | (url-scheme-get-property |
9450f124 | 307 | (url-type url-http-target-url) 'default-port)) |
1430e7f9 | 308 | (format |
9450f124 | 309 | "Host: %s:%d\r\n" host (url-port url-http-target-url)) |
1430e7f9 SM |
310 | (format "Host: %s\r\n" host)) |
311 | ;; Who its from | |
312 | (if url-personal-mail-address | |
313 | (concat | |
314 | "From: " url-personal-mail-address "\r\n")) | |
315 | ;; Encodings we understand | |
316 | (if url-mime-encoding-string | |
317 | (concat | |
318 | "Accept-encoding: " url-mime-encoding-string "\r\n")) | |
319 | (if url-mime-charset-string | |
320 | (concat | |
321 | "Accept-charset: " url-mime-charset-string "\r\n")) | |
322 | ;; Languages we understand | |
323 | (if url-mime-language-string | |
324 | (concat | |
325 | "Accept-language: " url-mime-language-string "\r\n")) | |
326 | ;; Types we understand | |
327 | "Accept: " (or url-mime-accept-string "*/*") "\r\n" | |
328 | ;; User agent | |
329 | (url-http-user-agent-string) | |
330 | ;; Proxy Authorization | |
331 | proxy-auth | |
332 | ;; Authorization | |
333 | auth | |
334 | ;; Cookies | |
aacaa419 LI |
335 | (when (url-use-cookies url-http-target-url) |
336 | (url-cookie-generate-header-lines | |
337 | host real-fname | |
338 | (equal "https" (url-type url-http-target-url)))) | |
1430e7f9 SM |
339 | ;; If-modified-since |
340 | (if (and (not no-cache) | |
8ea88265 | 341 | (member url-http-method '("GET" nil))) |
9450f124 | 342 | (let ((tm (url-is-cached url-http-target-url))) |
1430e7f9 SM |
343 | (if tm |
344 | (concat "If-modified-since: " | |
345 | (url-get-normalized-date tm) "\r\n")))) | |
346 | ;; Whence we came | |
347 | (if ref-url (concat | |
348 | "Referer: " ref-url "\r\n")) | |
349 | extra-headers | |
350 | ;; Length of data | |
8ea88265 | 351 | (if url-http-data |
1430e7f9 SM |
352 | (concat |
353 | "Content-length: " (number-to-string | |
8ea88265 | 354 | (length url-http-data)) |
1430e7f9 SM |
355 | "\r\n")) |
356 | ;; End request | |
357 | "\r\n" | |
358 | ;; Any data | |
e3e52a01 | 359 | url-http-data)) |
1430e7f9 | 360 | "")) |
8c8b8430 SM |
361 | (url-http-debug "Request is: \n%s" request) |
362 | request)) | |
363 | ||
364 | ;; Parsing routines | |
365 | (defun url-http-clean-headers () | |
366 | "Remove trailing \r from header lines. | |
d7c5e162 AS |
367 | This allows us to use `mail-fetch-field', etc. |
368 | Return the number of characters removed." | |
d7c5e162 AS |
369 | (let ((end (marker-position url-http-end-of-headers))) |
370 | (goto-char (point-min)) | |
371 | (while (re-search-forward "\r$" url-http-end-of-headers t) | |
372 | (replace-match "")) | |
373 | (- end url-http-end-of-headers))) | |
8c8b8430 SM |
374 | |
375 | (defun url-http-handle-authentication (proxy) | |
8c8b8430 | 376 | (url-http-debug "Handling %s authentication" (if proxy "proxy" "normal")) |
8917392a MH |
377 | (let ((auths (or (nreverse |
378 | (mail-fetch-field | |
379 | (if proxy "proxy-authenticate" "www-authenticate") | |
380 | nil nil t)) | |
381 | '("basic"))) | |
8c8b8430 SM |
382 | (type nil) |
383 | (url (url-recreate-url url-current-object)) | |
c98f55ca CY |
384 | (auth-url (url-recreate-url |
385 | (if (and proxy (boundp 'url-http-proxy)) | |
386 | url-http-proxy | |
387 | url-current-object))) | |
388 | (url-basic-auth-storage (if proxy | |
389 | ;; Cheating, but who cares? :) | |
390 | 'url-http-proxy-basic-auth-storage | |
391 | 'url-http-real-basic-auth-storage)) | |
385b64c5 MH |
392 | auth |
393 | (strength 0)) | |
8c8b8430 | 394 | |
385b64c5 MH |
395 | ;; find strongest supported auth |
396 | (dolist (this-auth auths) | |
d1ce47b0 JB |
397 | (setq this-auth (url-eat-trailing-space |
398 | (url-strip-leading-spaces | |
385b64c5 | 399 | this-auth))) |
d1ce47b0 | 400 | (let* ((this-type |
3a3f390d SM |
401 | (downcase (if (string-match "[ \t]" this-auth) |
402 | (substring this-auth 0 (match-beginning 0)) | |
403 | this-auth))) | |
385b64c5 MH |
404 | (registered (url-auth-registered this-type)) |
405 | (this-strength (cddr registered))) | |
406 | (when (and registered (> this-strength strength)) | |
407 | (setq auth this-auth | |
408 | type this-type | |
409 | strength this-strength)))) | |
8c8b8430 SM |
410 | |
411 | (if (not (url-auth-registered type)) | |
412 | (progn | |
413 | (widen) | |
414 | (goto-char (point-max)) | |
415 | (insert "<hr>Sorry, but I do not know how to handle " type | |
416 | " authentication. If you'd like to write it," | |
32544aa4 | 417 | " please use M-x report-emacs-bug RET.<hr>") |
3a3f390d SM |
418 | ;; We used to set a `status' var (declared "special") but I can't |
419 | ;; find the corresponding let-binding, so it's probably an error. | |
420 | ;; FIXME: Maybe it was supposed to set `success', i.e. to return t? | |
421 | ;; (setq status t) | |
422 | nil) ;; Not success yet. | |
423 | ||
12f1edc8 | 424 | (let* ((args (url-parse-args (subst-char-in-string ?, ?\; auth))) |
c98f55ca CY |
425 | (auth (url-get-authentication auth-url |
426 | (cdr-safe (assoc "realm" args)) | |
12f1edc8 | 427 | type t args))) |
8c8b8430 | 428 | (if (not auth) |
3a3f390d | 429 | t ;Success. |
8c8b8430 SM |
430 | (push (cons (if proxy "Proxy-Authorization" "Authorization") auth) |
431 | url-http-extra-headers) | |
432 | (let ((url-request-method url-http-method) | |
433 | (url-request-data url-http-data) | |
434 | (url-request-extra-headers url-http-extra-headers)) | |
5695d1dd | 435 | (url-retrieve-internal url url-callback-function |
3a3f390d SM |
436 | url-callback-arguments)) |
437 | nil))))) ;; Not success yet. | |
8c8b8430 SM |
438 | |
439 | (defun url-http-parse-response () | |
440 | "Parse just the response code." | |
8c8b8430 SM |
441 | (if (not url-http-end-of-headers) |
442 | (error "Trying to parse HTTP response code in odd buffer: %s" (buffer-name))) | |
443 | (url-http-debug "url-http-parse-response called in (%s)" (buffer-name)) | |
444 | (goto-char (point-min)) | |
445 | (skip-chars-forward " \t\n") ; Skip any blank crap | |
446 | (skip-chars-forward "HTTP/") ; Skip HTTP Version | |
b9b172ac MH |
447 | (setq url-http-response-version |
448 | (buffer-substring (point) | |
449 | (progn | |
450 | (skip-chars-forward "[0-9].") | |
451 | (point)))) | |
8c8b8430 SM |
452 | (setq url-http-response-status (read (current-buffer)))) |
453 | ||
454 | (defun url-http-handle-cookies () | |
455 | "Handle all set-cookie / set-cookie2 headers in an HTTP response. | |
55d1d8b7 | 456 | The buffer must already be narrowed to the headers, so `mail-fetch-field' will |
8c8b8430 | 457 | work correctly." |
8c33dc13 CY |
458 | (let ((cookies (nreverse (mail-fetch-field "Set-Cookie" nil nil t))) |
459 | (cookies2 (nreverse (mail-fetch-field "Set-Cookie2" nil nil t)))) | |
8c8b8430 SM |
460 | (and cookies (url-http-debug "Found %d Set-Cookie headers" (length cookies))) |
461 | (and cookies2 (url-http-debug "Found %d Set-Cookie2 headers" (length cookies2))) | |
462 | (while cookies | |
463 | (url-cookie-handle-set-cookie (pop cookies))) | |
464 | ;;; (while cookies2 | |
465 | ;;; (url-cookie-handle-set-cookie2 (pop cookies))) | |
466 | ) | |
467 | ) | |
468 | ||
469 | (defun url-http-parse-headers () | |
470 | "Parse and handle HTTP specific headers. | |
471 | Return t if and only if the current buffer is still active and | |
472 | should be shown to the user." | |
473 | ;; The comments after each status code handled are taken from RFC | |
474 | ;; 2616 (HTTP/1.1) | |
8c8b8430 SM |
475 | (url-http-mark-connection-as-free (url-host url-current-object) |
476 | (url-port url-current-object) | |
477 | url-http-process) | |
478 | ||
479 | (if (or (not (boundp 'url-http-end-of-headers)) | |
480 | (not url-http-end-of-headers)) | |
481 | (error "Trying to parse headers in odd buffer: %s" (buffer-name))) | |
482 | (goto-char (point-min)) | |
483 | (url-http-debug "url-http-parse-headers called in (%s)" (buffer-name)) | |
484 | (url-http-parse-response) | |
485 | (mail-narrow-to-head) | |
486 | ;;(narrow-to-region (point-min) url-http-end-of-headers) | |
48abdb63 | 487 | (let ((connection (mail-fetch-field "Connection"))) |
b9b172ac MH |
488 | ;; In HTTP 1.0, keep the connection only if there is a |
489 | ;; "Connection: keep-alive" header. | |
490 | ;; In HTTP 1.1 (and greater), keep the connection unless there is a | |
491 | ;; "Connection: close" header | |
d1ce47b0 | 492 | (cond |
b9b172ac MH |
493 | ((string= url-http-response-version "1.0") |
494 | (unless (and connection | |
495 | (string= (downcase connection) "keep-alive")) | |
48abdb63 | 496 | (delete-process url-http-process))) |
b9b172ac MH |
497 | (t |
498 | (when (and connection | |
499 | (string= (downcase connection) "close")) | |
500 | (delete-process url-http-process))))) | |
3a3f390d SM |
501 | (let* ((buffer (current-buffer)) |
502 | (class (/ url-http-response-status 100)) | |
503 | (success nil) | |
504 | ;; other status symbols: jewelry and luxury cars | |
505 | (status-symbol (cadr (assq url-http-response-status url-http-codes)))) | |
89534796 SM |
506 | (url-http-debug "Parsed HTTP headers: class=%d status=%d" |
507 | class url-http-response-status) | |
aacaa419 LI |
508 | (when (url-use-cookies url-http-target-url) |
509 | (url-http-handle-cookies)) | |
8c8b8430 | 510 | |
a464a6c7 | 511 | (pcase class |
8c8b8430 SM |
512 | ;; Classes of response codes |
513 | ;; | |
514 | ;; 5xx = Server Error | |
515 | ;; 4xx = Client Error | |
516 | ;; 3xx = Redirection | |
517 | ;; 2xx = Successful | |
518 | ;; 1xx = Informational | |
519 | (1 ; Information messages | |
520 | ;; 100 = Continue with request | |
521 | ;; 101 = Switching protocols | |
522 | ;; 102 = Processing (Added by DAV) | |
72f25299 | 523 | (url-mark-buffer-as-dead buffer) |
89534796 SM |
524 | (error "HTTP responses in class 1xx not supported (%d)" |
525 | url-http-response-status)) | |
8c8b8430 SM |
526 | (2 ; Success |
527 | ;; 200 Ok | |
528 | ;; 201 Created | |
529 | ;; 202 Accepted | |
530 | ;; 203 Non-authoritative information | |
531 | ;; 204 No content | |
532 | ;; 205 Reset content | |
533 | ;; 206 Partial content | |
534 | ;; 207 Multi-status (Added by DAV) | |
a464a6c7 SM |
535 | (pcase status-symbol |
536 | ((or `no-content `reset-content) | |
8c8b8430 | 537 | ;; No new data, just stay at the same document |
3a3f390d | 538 | (url-mark-buffer-as-dead buffer)) |
a464a6c7 | 539 | (_ |
8c8b8430 SM |
540 | ;; Generic success for all others. Store in the cache, and |
541 | ;; mark it as successful. | |
542 | (widen) | |
76bad534 | 543 | (if (and url-automatic-caching (equal url-http-method "GET")) |
3a3f390d SM |
544 | (url-store-in-cache buffer)))) |
545 | (setq success t)) | |
8c8b8430 SM |
546 | (3 ; Redirection |
547 | ;; 300 Multiple choices | |
548 | ;; 301 Moved permanently | |
549 | ;; 302 Found | |
550 | ;; 303 See other | |
551 | ;; 304 Not modified | |
552 | ;; 305 Use proxy | |
553 | ;; 307 Temporary redirect | |
554 | (let ((redirect-uri (or (mail-fetch-field "Location") | |
555 | (mail-fetch-field "URI")))) | |
a464a6c7 SM |
556 | (pcase status-symbol |
557 | (`multiple-choices ; 300 | |
8c8b8430 SM |
558 | ;; Quoth the spec (section 10.3.1) |
559 | ;; ------------------------------- | |
560 | ;; The requested resource corresponds to any one of a set of | |
561 | ;; representations, each with its own specific location and | |
562 | ;; agent-driven negotiation information is being provided so | |
563 | ;; that the user can select a preferred representation and | |
564 | ;; redirect its request to that location. | |
565 | ;; [...] | |
566 | ;; If the server has a preferred choice of representation, it | |
567 | ;; SHOULD include the specific URI for that representation in | |
568 | ;; the Location field; user agents MAY use the Location field | |
569 | ;; value for automatic redirection. | |
570 | ;; ------------------------------- | |
571 | ;; We do not support agent-driven negotiation, so we just | |
572 | ;; redirect to the preferred URI if one is provided. | |
573 | nil) | |
a464a6c7 | 574 | ((or `moved-permanently `found `temporary-redirect) ; 301 302 307 |
8c8b8430 SM |
575 | ;; If the 301|302 status code is received in response to a |
576 | ;; request other than GET or HEAD, the user agent MUST NOT | |
577 | ;; automatically redirect the request unless it can be | |
578 | ;; confirmed by the user, since this might change the | |
579 | ;; conditions under which the request was issued. | |
98fdd2b8 CY |
580 | (unless (member url-http-method '("HEAD" "GET")) |
581 | (setq redirect-uri nil))) | |
a464a6c7 | 582 | (`see-other ; 303 |
8c8b8430 SM |
583 | ;; The response to the request can be found under a different |
584 | ;; URI and SHOULD be retrieved using a GET method on that | |
585 | ;; resource. | |
586 | (setq url-http-method "GET" | |
587 | url-http-data nil)) | |
a464a6c7 | 588 | (`not-modified ; 304 |
8c8b8430 SM |
589 | ;; The 304 response MUST NOT contain a message-body. |
590 | (url-http-debug "Extracting document from cache... (%s)" | |
591 | (url-cache-create-filename (url-view-url t))) | |
592 | (url-cache-extract (url-cache-create-filename (url-view-url t))) | |
593 | (setq redirect-uri nil | |
594 | success t)) | |
a464a6c7 | 595 | (`use-proxy ; 305 |
8c8b8430 SM |
596 | ;; The requested resource MUST be accessed through the |
597 | ;; proxy given by the Location field. The Location field | |
598 | ;; gives the URI of the proxy. The recipient is expected | |
599 | ;; to repeat this single request via the proxy. 305 | |
600 | ;; responses MUST only be generated by origin servers. | |
601 | (error "Redirection thru a proxy server not supported: %s" | |
602 | redirect-uri)) | |
a464a6c7 | 603 | (_ |
8c8b8430 SM |
604 | ;; Treat everything like '300' |
605 | nil)) | |
606 | (when redirect-uri | |
607 | ;; Clean off any whitespace and/or <...> cruft. | |
608 | (if (string-match "\\([^ \t]+\\)[ \t]" redirect-uri) | |
609 | (setq redirect-uri (match-string 1 redirect-uri))) | |
610 | (if (string-match "^<\\(.*\\)>$" redirect-uri) | |
611 | (setq redirect-uri (match-string 1 redirect-uri))) | |
612 | ||
613 | ;; Some stupid sites (like sourceforge) send a | |
614 | ;; non-fully-qualified URL (ie: /), which royally confuses | |
615 | ;; the URL library. | |
616 | (if (not (string-match url-nonrelative-link redirect-uri)) | |
12f1edc8 SM |
617 | ;; Be careful to use the real target URL, otherwise we may |
618 | ;; compute the redirection relative to the URL of the proxy. | |
619 | (setq redirect-uri | |
620 | (url-expand-file-name redirect-uri url-http-target-url))) | |
621 | (let ((url-request-method url-http-method) | |
8c8b8430 SM |
622 | (url-request-data url-http-data) |
623 | (url-request-extra-headers url-http-extra-headers)) | |
58aba814 CY |
624 | ;; Check existing number of redirects |
625 | (if (or (< url-max-redirections 0) | |
626 | (and (> url-max-redirections 0) | |
627 | (let ((events (car url-callback-arguments)) | |
628 | (old-redirects 0)) | |
629 | (while events | |
630 | (if (eq (car events) :redirect) | |
631 | (setq old-redirects (1+ old-redirects))) | |
632 | (and (setq events (cdr events)) | |
633 | (setq events (cdr events)))) | |
634 | (< old-redirects url-max-redirections)))) | |
635 | ;; url-max-redirections hasn't been reached, so go | |
636 | ;; ahead and redirect. | |
637 | (progn | |
638 | ;; Remember that the request was redirected. | |
639 | (setf (car url-callback-arguments) | |
640 | (nconc (list :redirect redirect-uri) | |
641 | (car url-callback-arguments))) | |
642 | ;; Put in the current buffer a forwarding pointer to the new | |
643 | ;; destination buffer. | |
644 | ;; FIXME: This is a hack to fix url-retrieve-synchronously | |
645 | ;; without changing the API. Instead url-retrieve should | |
646 | ;; either simply not return the "destination" buffer, or it | |
647 | ;; should take an optional `dest-buf' argument. | |
648 | (set (make-local-variable 'url-redirect-buffer) | |
649 | (url-retrieve-internal | |
650 | redirect-uri url-callback-function | |
08b8ba9f | 651 | url-callback-arguments |
3b8eb822 | 652 | (url-silent url-current-object) |
3647f557 | 653 | (not (url-use-cookies url-current-object)))) |
72f25299 | 654 | (url-mark-buffer-as-dead buffer)) |
58aba814 CY |
655 | ;; We hit url-max-redirections, so issue an error and |
656 | ;; stop redirecting. | |
657 | (url-http-debug "Maximum redirections reached") | |
658 | (setf (car url-callback-arguments) | |
659 | (nconc (list :error (list 'error 'http-redirect-limit | |
660 | redirect-uri)) | |
661 | (car url-callback-arguments))) | |
662 | (setq success t)))))) | |
8c8b8430 SM |
663 | (4 ; Client error |
664 | ;; 400 Bad Request | |
665 | ;; 401 Unauthorized | |
666 | ;; 402 Payment required | |
667 | ;; 403 Forbidden | |
668 | ;; 404 Not found | |
669 | ;; 405 Method not allowed | |
670 | ;; 406 Not acceptable | |
671 | ;; 407 Proxy authentication required | |
672 | ;; 408 Request time-out | |
673 | ;; 409 Conflict | |
674 | ;; 410 Gone | |
675 | ;; 411 Length required | |
676 | ;; 412 Precondition failed | |
677 | ;; 413 Request entity too large | |
678 | ;; 414 Request-URI too large | |
679 | ;; 415 Unsupported media type | |
680 | ;; 416 Requested range not satisfiable | |
681 | ;; 417 Expectation failed | |
682 | ;; 422 Unprocessable Entity (Added by DAV) | |
683 | ;; 423 Locked | |
684 | ;; 424 Failed Dependency | |
3a3f390d SM |
685 | (setq success |
686 | (pcase status-symbol | |
687 | (`unauthorized ; 401 | |
688 | ;; The request requires user authentication. The response | |
689 | ;; MUST include a WWW-Authenticate header field containing a | |
690 | ;; challenge applicable to the requested resource. The | |
691 | ;; client MAY repeat the request with a suitable | |
692 | ;; Authorization header field. | |
693 | (url-http-handle-authentication nil)) | |
694 | (`payment-required ; 402 | |
695 | ;; This code is reserved for future use | |
696 | (url-mark-buffer-as-dead buffer) | |
697 | (error "Somebody wants you to give them money")) | |
698 | (`forbidden ; 403 | |
699 | ;; The server understood the request, but is refusing to | |
700 | ;; fulfill it. Authorization will not help and the request | |
701 | ;; SHOULD NOT be repeated. | |
702 | t) | |
703 | (`not-found ; 404 | |
704 | ;; Not found | |
705 | t) | |
706 | (`method-not-allowed ; 405 | |
707 | ;; The method specified in the Request-Line is not allowed | |
708 | ;; for the resource identified by the Request-URI. The | |
709 | ;; response MUST include an Allow header containing a list of | |
710 | ;; valid methods for the requested resource. | |
711 | t) | |
712 | (`not-acceptable ; 406 | |
713 | ;; The resource identified by the request is only capable of | |
714 | ;; generating response entities which have content | |
715 | ;; characteristics not acceptable according to the accept | |
716 | ;; headers sent in the request. | |
717 | t) | |
718 | (`proxy-authentication-required ; 407 | |
719 | ;; This code is similar to 401 (Unauthorized), but indicates | |
720 | ;; that the client must first authenticate itself with the | |
721 | ;; proxy. The proxy MUST return a Proxy-Authenticate header | |
722 | ;; field containing a challenge applicable to the proxy for | |
723 | ;; the requested resource. | |
724 | (url-http-handle-authentication t)) | |
725 | (`request-timeout ; 408 | |
726 | ;; The client did not produce a request within the time that | |
727 | ;; the server was prepared to wait. The client MAY repeat | |
728 | ;; the request without modifications at any later time. | |
729 | t) | |
730 | (`conflict ; 409 | |
731 | ;; The request could not be completed due to a conflict with | |
732 | ;; the current state of the resource. This code is only | |
733 | ;; allowed in situations where it is expected that the user | |
734 | ;; might be able to resolve the conflict and resubmit the | |
735 | ;; request. The response body SHOULD include enough | |
736 | ;; information for the user to recognize the source of the | |
737 | ;; conflict. | |
738 | t) | |
739 | (`gone ; 410 | |
740 | ;; The requested resource is no longer available at the | |
741 | ;; server and no forwarding address is known. | |
742 | t) | |
743 | (`length-required ; 411 | |
744 | ;; The server refuses to accept the request without a defined | |
745 | ;; Content-Length. The client MAY repeat the request if it | |
746 | ;; adds a valid Content-Length header field containing the | |
747 | ;; length of the message-body in the request message. | |
748 | ;; | |
749 | ;; NOTE - this will never happen because | |
750 | ;; `url-http-create-request' automatically calculates the | |
751 | ;; content-length. | |
752 | t) | |
753 | (`precondition-failed ; 412 | |
754 | ;; The precondition given in one or more of the | |
755 | ;; request-header fields evaluated to false when it was | |
756 | ;; tested on the server. | |
757 | t) | |
758 | ((or `request-entity-too-large `request-uri-too-large) ; 413 414 | |
759 | ;; The server is refusing to process a request because the | |
760 | ;; request entity|URI is larger than the server is willing or | |
761 | ;; able to process. | |
762 | t) | |
763 | (`unsupported-media-type ; 415 | |
764 | ;; The server is refusing to service the request because the | |
765 | ;; entity of the request is in a format not supported by the | |
766 | ;; requested resource for the requested method. | |
767 | t) | |
768 | (`requested-range-not-satisfiable ; 416 | |
769 | ;; A server SHOULD return a response with this status code if | |
770 | ;; a request included a Range request-header field, and none | |
771 | ;; of the range-specifier values in this field overlap the | |
772 | ;; current extent of the selected resource, and the request | |
773 | ;; did not include an If-Range request-header field. | |
774 | t) | |
775 | (`expectation-failed ; 417 | |
776 | ;; The expectation given in an Expect request-header field | |
777 | ;; could not be met by this server, or, if the server is a | |
778 | ;; proxy, the server has unambiguous evidence that the | |
779 | ;; request could not be met by the next-hop server. | |
780 | t) | |
781 | (_ | |
782 | ;; The request could not be understood by the server due to | |
783 | ;; malformed syntax. The client SHOULD NOT repeat the | |
784 | ;; request without modifications. | |
785 | t))) | |
5695d1dd CY |
786 | ;; Tell the callback that an error occurred, and what the |
787 | ;; status code was. | |
788 | (when success | |
789 | (setf (car url-callback-arguments) | |
790 | (nconc (list :error (list 'error 'http url-http-response-status)) | |
791 | (car url-callback-arguments))))) | |
8c8b8430 SM |
792 | (5 |
793 | ;; 500 Internal server error | |
794 | ;; 501 Not implemented | |
795 | ;; 502 Bad gateway | |
796 | ;; 503 Service unavailable | |
797 | ;; 504 Gateway time-out | |
798 | ;; 505 HTTP version not supported | |
799 | ;; 507 Insufficient storage | |
800 | (setq success t) | |
a464a6c7 SM |
801 | (pcase url-http-response-status |
802 | (`not-implemented ; 501 | |
8c8b8430 SM |
803 | ;; The server does not support the functionality required to |
804 | ;; fulfill the request. | |
805 | nil) | |
a464a6c7 | 806 | (`bad-gateway ; 502 |
8c8b8430 SM |
807 | ;; The server, while acting as a gateway or proxy, received |
808 | ;; an invalid response from the upstream server it accessed | |
809 | ;; in attempting to fulfill the request. | |
810 | nil) | |
a464a6c7 | 811 | (`service-unavailable ; 503 |
8c8b8430 SM |
812 | ;; The server is currently unable to handle the request due |
813 | ;; to a temporary overloading or maintenance of the server. | |
814 | ;; The implication is that this is a temporary condition | |
815 | ;; which will be alleviated after some delay. If known, the | |
816 | ;; length of the delay MAY be indicated in a Retry-After | |
817 | ;; header. If no Retry-After is given, the client SHOULD | |
818 | ;; handle the response as it would for a 500 response. | |
819 | nil) | |
a464a6c7 | 820 | (`gateway-timeout ; 504 |
8c8b8430 SM |
821 | ;; The server, while acting as a gateway or proxy, did not |
822 | ;; receive a timely response from the upstream server | |
823 | ;; specified by the URI (e.g. HTTP, FTP, LDAP) or some other | |
824 | ;; auxiliary server (e.g. DNS) it needed to access in | |
825 | ;; attempting to complete the request. | |
826 | nil) | |
a464a6c7 | 827 | (`http-version-not-supported ; 505 |
8c8b8430 SM |
828 | ;; The server does not support, or refuses to support, the |
829 | ;; HTTP protocol version that was used in the request | |
830 | ;; message. | |
831 | nil) | |
a464a6c7 | 832 | (`insufficient-storage ; 507 (DAV) |
8c8b8430 SM |
833 | ;; The method could not be performed on the resource |
834 | ;; because the server is unable to store the representation | |
835 | ;; needed to successfully complete the request. This | |
836 | ;; condition is considered to be temporary. If the request | |
837 | ;; which received this status code was the result of a user | |
838 | ;; action, the request MUST NOT be repeated until it is | |
839 | ;; requested by a separate user action. | |
5695d1dd CY |
840 | nil)) |
841 | ;; Tell the callback that an error occurred, and what the | |
842 | ;; status code was. | |
843 | (when success | |
844 | (setf (car url-callback-arguments) | |
845 | (nconc (list :error (list 'error 'http url-http-response-status)) | |
846 | (car url-callback-arguments))))) | |
a464a6c7 | 847 | (_ |
8c8b8430 SM |
848 | (error "Unknown class of HTTP response code: %d (%d)" |
849 | class url-http-response-status))) | |
850 | (if (not success) | |
6edea0a5 LMI |
851 | (url-mark-buffer-as-dead buffer) |
852 | (url-handle-content-transfer-encoding)) | |
8c8b8430 SM |
853 | (url-http-debug "Finished parsing HTTP headers: %S" success) |
854 | (widen) | |
6c195442 | 855 | (goto-char (point-min)) |
8c8b8430 SM |
856 | success)) |
857 | ||
ee8b701c | 858 | (declare-function zlib-decompress-region "decompress.c" (start end)) |
35cc4737 | 859 | |
6edea0a5 LMI |
860 | (defun url-handle-content-transfer-encoding () |
861 | (let ((encoding (mail-fetch-field "content-encoding"))) | |
862 | (when (and encoding | |
d6a04266 | 863 | (fboundp 'zlib-available-p) |
8a44a184 | 864 | (zlib-available-p) |
6edea0a5 LMI |
865 | (equal (downcase encoding) "gzip")) |
866 | (save-restriction | |
867 | (widen) | |
868 | (goto-char (point-min)) | |
869 | (when (search-forward "\n\n") | |
7699d09e | 870 | (zlib-decompress-region (point) (point-max))))))) |
6edea0a5 | 871 | |
8c8b8430 SM |
872 | ;; Miscellaneous |
873 | (defun url-http-activate-callback () | |
874 | "Activate callback specified when this buffer was created." | |
8c8b8430 SM |
875 | (url-http-mark-connection-as-free (url-host url-current-object) |
876 | (url-port url-current-object) | |
877 | url-http-process) | |
878 | (url-http-debug "Activating callback in buffer (%s)" (buffer-name)) | |
879 | (apply url-callback-function url-callback-arguments)) | |
880 | ||
881 | ;; ) | |
882 | ||
883 | ;; These unfortunately cannot be macros... please ignore them! | |
884 | (defun url-http-idle-sentinel (proc why) | |
d1ce47b0 | 885 | "Remove (now defunct) process PROC from the list of open connections." |
8c8b8430 SM |
886 | (maphash (lambda (key val) |
887 | (if (memq proc val) | |
888 | (puthash key (delq proc val) url-http-open-connections))) | |
889 | url-http-open-connections)) | |
890 | ||
891 | (defun url-http-end-of-document-sentinel (proc why) | |
09100633 CY |
892 | ;; Sentinel used to handle (i) terminated old HTTP/0.9 connections, |
893 | ;; and (ii) closed connection due to reusing a HTTP connection which | |
894 | ;; we believed was still alive, but which the server closed on us. | |
895 | ;; We handle case (ii) by calling `url-http' again. | |
8c8b8430 SM |
896 | (url-http-debug "url-http-end-of-document-sentinel in buffer (%s)" |
897 | (process-buffer proc)) | |
898 | (url-http-idle-sentinel proc why) | |
b0e0b216 LMI |
899 | (when (buffer-name (process-buffer proc)) |
900 | (with-current-buffer (process-buffer proc) | |
901 | (goto-char (point-min)) | |
09100633 CY |
902 | (cond ((not (looking-at "HTTP/")) |
903 | (if url-http-no-retry | |
904 | ;; HTTP/0.9 just gets passed back no matter what | |
905 | (url-http-activate-callback) | |
906 | ;; Call `url-http' again if our connection expired. | |
907 | (erase-buffer) | |
33d35987 TA |
908 | (let ((url-request-method url-http-method) |
909 | (url-request-extra-headers url-http-extra-headers) | |
910 | (url-request-data url-http-data)) | |
911 | (url-http url-current-object url-callback-function | |
912 | url-callback-arguments (current-buffer))))) | |
09100633 CY |
913 | ((url-http-parse-headers) |
914 | (url-http-activate-callback)))))) | |
8c8b8430 SM |
915 | |
916 | (defun url-http-simple-after-change-function (st nd length) | |
917 | ;; Function used when we do NOT know how long the document is going to be | |
918 | ;; Just _very_ simple 'downloaded %d' type of info. | |
0bf29ba6 | 919 | (url-lazy-message "Reading %s..." (file-size-human-readable nd))) |
8c8b8430 SM |
920 | |
921 | (defun url-http-content-length-after-change-function (st nd length) | |
922 | "Function used when we DO know how long the document is going to be. | |
923 | More sophisticated percentage downloaded, etc. | |
924 | Also does minimal parsing of HTTP headers and will actually cause | |
925 | the callback to be triggered." | |
8c8b8430 SM |
926 | (if url-http-content-type |
927 | (url-display-percentage | |
928 | "Reading [%s]... %s of %s (%d%%)" | |
929 | (url-percentage (- nd url-http-end-of-headers) | |
930 | url-http-content-length) | |
931 | url-http-content-type | |
0bf29ba6 LL |
932 | (file-size-human-readable (- nd url-http-end-of-headers)) |
933 | (file-size-human-readable url-http-content-length) | |
8c8b8430 SM |
934 | (url-percentage (- nd url-http-end-of-headers) |
935 | url-http-content-length)) | |
936 | (url-display-percentage | |
937 | "Reading... %s of %s (%d%%)" | |
938 | (url-percentage (- nd url-http-end-of-headers) | |
939 | url-http-content-length) | |
0bf29ba6 LL |
940 | (file-size-human-readable (- nd url-http-end-of-headers)) |
941 | (file-size-human-readable url-http-content-length) | |
8c8b8430 SM |
942 | (url-percentage (- nd url-http-end-of-headers) |
943 | url-http-content-length))) | |
944 | ||
945 | (if (> (- nd url-http-end-of-headers) url-http-content-length) | |
946 | (progn | |
947 | ;; Found the end of the document! Wheee! | |
948 | (url-display-percentage nil nil) | |
f0d64cfc | 949 | (url-lazy-message "Reading... done.") |
8c8b8430 SM |
950 | (if (url-http-parse-headers) |
951 | (url-http-activate-callback))))) | |
952 | ||
953 | (defun url-http-chunked-encoding-after-change-function (st nd length) | |
954 | "Function used when dealing with 'chunked' encoding. | |
955 | Cannot give a sophisticated percentage, but we need a different | |
956 | function to look for the special 0-length chunk that signifies | |
957 | the end of the document." | |
8c8b8430 SM |
958 | (save-excursion |
959 | (goto-char st) | |
960 | (let ((read-next-chunk t) | |
961 | (case-fold-search t) | |
962 | (regexp nil) | |
963 | (no-initial-crlf nil)) | |
964 | ;; We need to loop thru looking for more chunks even within | |
965 | ;; one after-change-function call. | |
966 | (while read-next-chunk | |
967 | (setq no-initial-crlf (= 0 url-http-chunked-counter)) | |
968 | (if url-http-content-type | |
969 | (url-display-percentage nil | |
970 | "Reading [%s]... chunk #%d" | |
971 | url-http-content-type url-http-chunked-counter) | |
972 | (url-display-percentage nil | |
973 | "Reading... chunk #%d" | |
974 | url-http-chunked-counter)) | |
975 | (url-http-debug "Reading chunk %d (%d %d %d)" | |
976 | url-http-chunked-counter st nd length) | |
977 | (setq regexp (if no-initial-crlf | |
978 | "\\([0-9a-z]+\\).*\r?\n" | |
979 | "\r?\n\\([0-9a-z]+\\).*\r?\n")) | |
980 | ||
981 | (if url-http-chunked-start | |
982 | ;; We know how long the chunk is supposed to be, skip over | |
983 | ;; leading crap if possible. | |
984 | (if (> nd (+ url-http-chunked-start url-http-chunked-length)) | |
985 | (progn | |
986 | (url-http-debug "Got to the end of chunk #%d!" | |
987 | url-http-chunked-counter) | |
988 | (goto-char (+ url-http-chunked-start | |
989 | url-http-chunked-length))) | |
990 | (url-http-debug "Still need %d bytes to hit end of chunk" | |
991 | (- (+ url-http-chunked-start | |
992 | url-http-chunked-length) | |
993 | nd)) | |
994 | (setq read-next-chunk nil))) | |
995 | (if (not read-next-chunk) | |
996 | (url-http-debug "Still spinning for next chunk...") | |
997 | (if no-initial-crlf (skip-chars-forward "\r\n")) | |
998 | (if (not (looking-at regexp)) | |
999 | (progn | |
1000 | ;; Must not have received the entirety of the chunk header, | |
1001 | ;; need to spin some more. | |
1002 | (url-http-debug "Did not see start of chunk @ %d!" (point)) | |
1003 | (setq read-next-chunk nil)) | |
1004 | (add-text-properties (match-beginning 0) (match-end 0) | |
1005 | (list 'start-open t | |
1006 | 'end-open t | |
1007 | 'chunked-encoding t | |
cc38a294 | 1008 | 'face 'cursor |
8c8b8430 | 1009 | 'invisible t)) |
216d3806 JB |
1010 | (setq url-http-chunked-length (string-to-number (buffer-substring |
1011 | (match-beginning 1) | |
1012 | (match-end 1)) | |
1013 | 16) | |
8c8b8430 SM |
1014 | url-http-chunked-counter (1+ url-http-chunked-counter) |
1015 | url-http-chunked-start (set-marker | |
1016 | (or url-http-chunked-start | |
1017 | (make-marker)) | |
1018 | (match-end 0))) | |
1019 | ; (if (not url-http-debug) | |
1020 | (delete-region (match-beginning 0) (match-end 0));) | |
1021 | (url-http-debug "Saw start of chunk %d (length=%d, start=%d" | |
1022 | url-http-chunked-counter url-http-chunked-length | |
1023 | (marker-position url-http-chunked-start)) | |
1024 | (if (= 0 url-http-chunked-length) | |
1025 | (progn | |
1026 | ;; Found the end of the document! Wheee! | |
1027 | (url-http-debug "Saw end of stream chunk!") | |
1028 | (setq read-next-chunk nil) | |
1029 | (url-display-percentage nil nil) | |
84f089d3 MH |
1030 | ;; Every chunk, even the last 0-length one, is |
1031 | ;; terminated by CRLF. Skip it. | |
1032 | (when (looking-at "\r?\n") | |
1033 | (url-http-debug "Removing terminator of last chunk") | |
1034 | (delete-region (match-beginning 0) (match-end 0))) | |
8c8b8430 | 1035 | (if (re-search-forward "^\r*$" nil t) |
63db9644 | 1036 | (url-http-debug "Saw end of trailers...")) |
8c8b8430 SM |
1037 | (if (url-http-parse-headers) |
1038 | (url-http-activate-callback)))))))))) | |
1039 | ||
1040 | (defun url-http-wait-for-headers-change-function (st nd length) | |
1041 | ;; This will wait for the headers to arrive and then splice in the | |
1042 | ;; next appropriate after-change-function, etc. | |
8c8b8430 SM |
1043 | (url-http-debug "url-http-wait-for-headers-change-function (%s)" |
1044 | (buffer-name)) | |
b301d174 LI |
1045 | (let ((end-of-headers nil) |
1046 | (old-http nil) | |
1047 | (process-buffer (current-buffer)) | |
1048 | (content-length nil)) | |
1049 | (when (not (bobp)) | |
57babe17 MH |
1050 | (goto-char (point-min)) |
1051 | (if (and (looking-at ".*\n") ; have one line at least | |
1052 | (not (looking-at "^HTTP/[1-9]\\.[0-9]"))) | |
1053 | ;; Not HTTP/x.y data, must be 0.9 | |
1054 | ;; God, I wish this could die. | |
1055 | (setq end-of-headers t | |
1056 | url-http-end-of-headers 0 | |
1057 | old-http t) | |
fe2219e2 GM |
1058 | ;; Blank line at end of headers. |
1059 | (when (re-search-forward "^\r?\n" nil t) | |
1060 | (backward-char 1) | |
57babe17 MH |
1061 | ;; Saw the end of the headers |
1062 | (url-http-debug "Saw end of headers... (%s)" (buffer-name)) | |
1063 | (setq url-http-end-of-headers (set-marker (make-marker) | |
1064 | (point)) | |
1065 | end-of-headers t) | |
d7c5e162 | 1066 | (setq nd (- nd (url-http-clean-headers))))) |
8c8b8430 | 1067 | |
d23832a2 | 1068 | (if (not end-of-headers) |
57babe17 MH |
1069 | ;; Haven't seen the end of the headers yet, need to wait |
1070 | ;; for more data to arrive. | |
1071 | nil | |
9aec558a LMI |
1072 | (unless old-http |
1073 | (url-http-parse-response) | |
1074 | (mail-narrow-to-head) | |
1075 | (setq url-http-transfer-encoding (mail-fetch-field | |
1076 | "transfer-encoding") | |
1077 | url-http-content-type (mail-fetch-field "content-type")) | |
1078 | (if (mail-fetch-field "content-length") | |
1079 | (setq url-http-content-length | |
1080 | (string-to-number (mail-fetch-field "content-length")))) | |
1081 | (widen)) | |
57babe17 MH |
1082 | (when url-http-transfer-encoding |
1083 | (setq url-http-transfer-encoding | |
1084 | (downcase url-http-transfer-encoding))) | |
8c8b8430 | 1085 | |
57babe17 | 1086 | (cond |
10472dd0 LMI |
1087 | ((null url-http-response-status) |
1088 | ;; We got back a headerless malformed response from the | |
1089 | ;; server. | |
1090 | (url-http-activate-callback)) | |
57babe17 MH |
1091 | ((or (= url-http-response-status 204) |
1092 | (= url-http-response-status 205)) | |
1093 | (url-http-debug "%d response must have headers only (%s)." | |
1094 | url-http-response-status (buffer-name)) | |
1095 | (when (url-http-parse-headers) | |
1096 | (url-http-activate-callback))) | |
1097 | ((string= "HEAD" url-http-method) | |
1098 | ;; A HEAD request is _ALWAYS_ terminated by the header | |
1099 | ;; information, regardless of any entity headers, | |
1100 | ;; according to section 4.4 of the HTTP/1.1 draft. | |
1101 | (url-http-debug "HEAD request must have headers only (%s)." | |
1102 | (buffer-name)) | |
1103 | (when (url-http-parse-headers) | |
1104 | (url-http-activate-callback))) | |
1105 | ((string= "CONNECT" url-http-method) | |
1106 | ;; A CONNECT request is finished, but we cannot stick this | |
da6062e6 | 1107 | ;; back on the free connection list |
57babe17 MH |
1108 | (url-http-debug "CONNECT request must have headers only.") |
1109 | (when (url-http-parse-headers) | |
1110 | (url-http-activate-callback))) | |
1111 | ((equal url-http-response-status 304) | |
1112 | ;; Only allowed to have a header section. We have to handle | |
1113 | ;; this here instead of in url-http-parse-headers because if | |
1114 | ;; you have a cached copy of something without a known | |
1115 | ;; content-length, and try to retrieve it from the cache, we'd | |
1116 | ;; fall into the 'being dumb' section and wait for the | |
1117 | ;; connection to terminate, which means we'd wait for 10 | |
1118 | ;; seconds for the keep-alives to time out on some servers. | |
1119 | (when (url-http-parse-headers) | |
1120 | (url-http-activate-callback))) | |
1121 | (old-http | |
1122 | ;; HTTP/0.9 always signaled end-of-connection by closing the | |
1123 | ;; connection. | |
1124 | (url-http-debug | |
1125 | "Saw HTTP/0.9 response, connection closed means end of document.") | |
1126 | (setq url-http-after-change-function | |
1127 | 'url-http-simple-after-change-function)) | |
1128 | ((equal url-http-transfer-encoding "chunked") | |
1129 | (url-http-debug "Saw chunked encoding.") | |
1130 | (setq url-http-after-change-function | |
1131 | 'url-http-chunked-encoding-after-change-function) | |
1132 | (when (> nd url-http-end-of-headers) | |
8c8b8430 | 1133 | (url-http-debug |
57babe17 MH |
1134 | "Calling initial chunked-encoding for extra data at end of headers") |
1135 | (url-http-chunked-encoding-after-change-function | |
1136 | (marker-position url-http-end-of-headers) nd | |
1137 | (- nd url-http-end-of-headers)))) | |
1138 | ((integerp url-http-content-length) | |
1139 | (url-http-debug | |
1140 | "Got a content-length, being smart about document end.") | |
1141 | (setq url-http-after-change-function | |
1142 | 'url-http-content-length-after-change-function) | |
1143 | (cond | |
1144 | ((= 0 url-http-content-length) | |
1145 | ;; We got a NULL body! Activate the callback | |
1146 | ;; immediately! | |
8c8b8430 | 1147 | (url-http-debug |
57babe17 MH |
1148 | "Got 0-length content-length, activating callback immediately.") |
1149 | (when (url-http-parse-headers) | |
1150 | (url-http-activate-callback))) | |
1151 | ((> nd url-http-end-of-headers) | |
1152 | ;; Have some leftover data | |
1153 | (url-http-debug "Calling initial content-length for extra data at end of headers") | |
1154 | (url-http-content-length-after-change-function | |
1155 | (marker-position url-http-end-of-headers) | |
1156 | nd | |
1157 | (- nd url-http-end-of-headers))) | |
8c8b8430 | 1158 | (t |
57babe17 MH |
1159 | nil))) |
1160 | (t | |
1161 | (url-http-debug "No content-length, being dumb.") | |
1162 | (setq url-http-after-change-function | |
1163 | 'url-http-simple-after-change-function))))) | |
8c8b8430 SM |
1164 | ;; We are still at the beginning of the buffer... must just be |
1165 | ;; waiting for a response. | |
b301d174 LI |
1166 | (url-http-debug "Spinning waiting for headers...") |
1167 | (when (eq process-buffer (current-buffer)) | |
1168 | (goto-char (point-max))))) | |
8c8b8430 | 1169 | |
09100633 | 1170 | (defun url-http (url callback cbargs &optional retry-buffer) |
8c8b8430 SM |
1171 | "Retrieve URL via HTTP asynchronously. |
1172 | URL must be a parsed URL. See `url-generic-parse-url' for details. | |
b1367cba CY |
1173 | |
1174 | When retrieval is completed, execute the function CALLBACK, using | |
1175 | the arguments listed in CBARGS. The first element in CBARGS | |
1176 | should be a plist describing what has happened so far during the | |
1177 | request, as described in the docstring of `url-retrieve' (if in | |
1178 | doubt, specify nil). | |
09100633 CY |
1179 | |
1180 | Optional arg RETRY-BUFFER, if non-nil, specifies the buffer of a | |
1181 | previous `url-http' call, which is being re-attempted." | |
a464a6c7 | 1182 | (cl-check-type url vector "Need a pre-parsed URL.") |
62bfb5bb MH |
1183 | (let* ((host (url-host (or url-using-proxy url))) |
1184 | (port (url-port (or url-using-proxy url))) | |
1185 | (connection (url-http-find-free-connection host port)) | |
09100633 | 1186 | (buffer (or retry-buffer |
a464a6c7 SM |
1187 | (generate-new-buffer |
1188 | (format " *http %s:%d*" host port))))) | |
8c8b8430 SM |
1189 | (if (not connection) |
1190 | ;; Failed to open the connection for some reason | |
1191 | (progn | |
1192 | (kill-buffer buffer) | |
1193 | (setq buffer nil) | |
62bfb5bb | 1194 | (error "Could not create connection to %s:%d" host port)) |
12f1edc8 | 1195 | (with-current-buffer buffer |
8c8b8430 SM |
1196 | (mm-disable-multibyte) |
1197 | (setq url-current-object url | |
1198 | mode-line-format "%b [%s]") | |
1199 | ||
1200 | (dolist (var '(url-http-end-of-headers | |
1201 | url-http-content-type | |
1202 | url-http-content-length | |
1203 | url-http-transfer-encoding | |
1204 | url-http-after-change-function | |
b9b172ac | 1205 | url-http-response-version |
8c8b8430 SM |
1206 | url-http-response-status |
1207 | url-http-chunked-length | |
1208 | url-http-chunked-counter | |
1209 | url-http-chunked-start | |
1210 | url-callback-function | |
1211 | url-callback-arguments | |
b0c9af93 | 1212 | url-show-status |
8c8b8430 SM |
1213 | url-http-process |
1214 | url-http-method | |
1215 | url-http-extra-headers | |
cacfe88b | 1216 | url-http-data |
62bfb5bb | 1217 | url-http-target-url |
09100633 | 1218 | url-http-no-retry |
b3cd7f61 | 1219 | url-http-connection-opened |
62bfb5bb | 1220 | url-http-proxy)) |
8c8b8430 SM |
1221 | (set (make-local-variable var) nil)) |
1222 | ||
1223 | (setq url-http-method (or url-request-method "GET") | |
1224 | url-http-extra-headers url-request-extra-headers | |
1225 | url-http-data url-request-data | |
1226 | url-http-process connection | |
1227 | url-http-chunked-length nil | |
1228 | url-http-chunked-start nil | |
1229 | url-http-chunked-counter 0 | |
1230 | url-callback-function callback | |
1231 | url-callback-arguments cbargs | |
cacfe88b | 1232 | url-http-after-change-function 'url-http-wait-for-headers-change-function |
62bfb5bb | 1233 | url-http-target-url url-current-object |
09100633 | 1234 | url-http-no-retry retry-buffer |
b3cd7f61 | 1235 | url-http-connection-opened nil |
62bfb5bb | 1236 | url-http-proxy url-using-proxy) |
8c8b8430 SM |
1237 | |
1238 | (set-process-buffer connection buffer) | |
8c8b8430 | 1239 | (set-process-filter connection 'url-http-generic-filter) |
3a3f390d SM |
1240 | (pcase (process-status connection) |
1241 | (`connect | |
1242 | ;; Asynchronous connection | |
1243 | (set-process-sentinel connection 'url-http-async-sentinel)) | |
1244 | (`failed | |
1245 | ;; Asynchronous connection failed | |
1246 | (error "Could not create connection to %s:%d" host port)) | |
1247 | (_ | |
1248 | (set-process-sentinel connection | |
1249 | 'url-http-end-of-document-sentinel) | |
1250 | (process-send-string connection (url-http-create-request)))))) | |
8c8b8430 SM |
1251 | buffer)) |
1252 | ||
5695d1dd | 1253 | (defun url-http-async-sentinel (proc why) |
5695d1dd CY |
1254 | ;; We are performing an asynchronous connection, and a status change |
1255 | ;; has occurred. | |
6ca26f1d LMI |
1256 | (when (buffer-name (process-buffer proc)) |
1257 | (with-current-buffer (process-buffer proc) | |
1258 | (cond | |
1259 | (url-http-connection-opened | |
09100633 | 1260 | (setq url-http-no-retry t) |
6ca26f1d LMI |
1261 | (url-http-end-of-document-sentinel proc why)) |
1262 | ((string= (substring why 0 4) "open") | |
1263 | (setq url-http-connection-opened t) | |
122d9463 LMI |
1264 | (condition-case error |
1265 | (process-send-string proc (url-http-create-request)) | |
1266 | (file-error | |
1267 | (setq url-http-connection-opened nil) | |
1268 | (message "HTTP error: %s" error)))) | |
6ca26f1d LMI |
1269 | (t |
1270 | (setf (car url-callback-arguments) | |
1271 | (nconc (list :error (list 'error 'connection-failed why | |
1272 | :host (url-host (or url-http-proxy url-current-object)) | |
1273 | :service (url-port (or url-http-proxy url-current-object)))) | |
1274 | (car url-callback-arguments))) | |
1275 | (url-http-activate-callback)))))) | |
5695d1dd | 1276 | |
8c8b8430 SM |
1277 | ;; Since Emacs 19/20 does not allow you to change the |
1278 | ;; `after-change-functions' hook in the midst of running them, we fake | |
1279 | ;; an after change by hooking into the process filter and inserting | |
1280 | ;; the data ourselves. This is slightly less efficient, but there | |
1281 | ;; were tons of weird ways the after-change code was biting us in the | |
1282 | ;; shorts. | |
12421f1c | 1283 | ;; FIXME this can probably be simplified since the above is no longer true. |
8c8b8430 SM |
1284 | (defun url-http-generic-filter (proc data) |
1285 | ;; Sometimes we get a zero-length data chunk after the process has | |
1286 | ;; been changed to 'free', which means it has no buffer associated | |
1287 | ;; with it. Do nothing if there is no buffer, or 0 length data. | |
8c8b8430 SM |
1288 | (and (process-buffer proc) |
1289 | (/= (length data) 0) | |
12f1edc8 | 1290 | (with-current-buffer (process-buffer proc) |
8c8b8430 SM |
1291 | (url-http-debug "Calling after change function `%s' for `%S'" url-http-after-change-function proc) |
1292 | (funcall url-http-after-change-function | |
1293 | (point-max) | |
1294 | (progn | |
1295 | (goto-char (point-max)) | |
1296 | (insert data) | |
1297 | (point-max)) | |
1298 | (length data))))) | |
1299 | ||
1300 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
1301 | ;;; file-name-handler stuff from here on out | |
1302 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
8dff56de SM |
1303 | (defalias 'url-http-symbol-value-in-buffer |
1304 | (if (fboundp 'symbol-value-in-buffer) | |
1305 | 'symbol-value-in-buffer | |
1306 | (lambda (symbol buffer &optional unbound-value) | |
8c8b8430 | 1307 | "Return the value of SYMBOL in BUFFER, or UNBOUND-VALUE if it is unbound." |
12f1edc8 | 1308 | (with-current-buffer buffer |
8dff56de SM |
1309 | (if (not (boundp symbol)) |
1310 | unbound-value | |
1311 | (symbol-value symbol)))))) | |
8c8b8430 SM |
1312 | |
1313 | (defun url-http-head (url) | |
1314 | (let ((url-request-method "HEAD") | |
1315 | (url-request-data nil)) | |
1316 | (url-retrieve-synchronously url))) | |
1317 | ||
8c8b8430 | 1318 | (defun url-http-file-exists-p (url) |
3a3f390d SM |
1319 | (let ((buffer (url-http-head url))) |
1320 | (when buffer | |
1321 | (let ((status (url-http-symbol-value-in-buffer 'url-http-response-status | |
1322 | buffer 500))) | |
1323 | (prog1 | |
1324 | (and (integerp status) | |
1325 | (>= status 200) (< status 300)) | |
1326 | (kill-buffer buffer)))))) | |
8c8b8430 | 1327 | |
8c8b8430 SM |
1328 | (defalias 'url-http-file-readable-p 'url-http-file-exists-p) |
1329 | ||
3f19601e | 1330 | (defun url-http-head-file-attributes (url &optional id-format) |
162fbe11 | 1331 | (let ((buffer (url-http-head url))) |
8c8b8430 | 1332 | (when buffer |
162fbe11 SM |
1333 | (prog1 |
1334 | (list | |
1335 | nil ;dir / link / normal file | |
1336 | 1 ;number of links to file. | |
1337 | 0 0 ;uid ; gid | |
1338 | nil nil nil ;atime ; mtime ; ctime | |
1339 | (url-http-symbol-value-in-buffer 'url-http-content-length | |
1340 | buffer -1) | |
1341 | (eval-when-compile (make-string 10 ?-)) | |
1342 | nil nil nil) ;whether gid would change ; inode ; device. | |
1343 | (kill-buffer buffer))))) | |
8c8b8430 | 1344 | |
f9c9a239 | 1345 | (declare-function url-dav-file-attributes "url-dav" (url &optional id-format)) |
153ef845 | 1346 | |
3f19601e | 1347 | (defun url-http-file-attributes (url &optional id-format) |
8c8b8430 | 1348 | (if (url-dav-supported-p url) |
3f19601e SM |
1349 | (url-dav-file-attributes url id-format) |
1350 | (url-http-head-file-attributes url id-format))) | |
8c8b8430 | 1351 | |
8c8b8430 | 1352 | (defun url-http-options (url) |
55d1d8b7 | 1353 | "Return a property list describing options available for URL. |
8c8b8430 SM |
1354 | This list is retrieved using the `OPTIONS' HTTP method. |
1355 | ||
1356 | Property list members: | |
1357 | ||
1358 | methods | |
1359 | A list of symbols specifying what HTTP methods the resource | |
1360 | supports. | |
1361 | ||
1362 | dav | |
1363 | A list of numbers specifying what DAV protocol/schema versions are | |
1364 | supported. | |
1365 | ||
1366 | dasl | |
1367 | A list of supported DASL search types supported (string form) | |
1368 | ||
1369 | ranges | |
1370 | A list of the units available for use in partial document fetches. | |
1371 | ||
1372 | p3p | |
1373 | The `Platform For Privacy Protection' description for the resource. | |
1374 | Currently this is just the raw header contents. This is likely to | |
1375 | change once P3P is formally supported by the URL package or | |
55d1d8b7 | 1376 | Emacs/W3." |
8c8b8430 SM |
1377 | (let* ((url-request-method "OPTIONS") |
1378 | (url-request-data nil) | |
1379 | (buffer (url-retrieve-synchronously url)) | |
1380 | (header nil) | |
1381 | (options nil)) | |
1382 | (when (and buffer (= 2 (/ (url-http-symbol-value-in-buffer | |
1383 | 'url-http-response-status buffer 0) 100))) | |
1384 | ;; Only parse the options if we got a 2xx response code! | |
12f1edc8 | 1385 | (with-current-buffer buffer |
8c8b8430 SM |
1386 | (save-restriction |
1387 | (save-match-data | |
8c8b8430 SM |
1388 | (mail-narrow-to-head) |
1389 | ||
1390 | ;; Figure out what methods are supported. | |
1391 | (when (setq header (mail-fetch-field "allow")) | |
1392 | (setq options (plist-put | |
1393 | options 'methods | |
1394 | (mapcar 'intern (split-string header "[ ,]+"))))) | |
1395 | ||
1396 | ;; Check for DAV | |
1397 | (when (setq header (mail-fetch-field "dav")) | |
1398 | (setq options (plist-put | |
1399 | options 'dav | |
1400 | (delq 0 | |
1401 | (mapcar 'string-to-number | |
1402 | (split-string header "[, ]+")))))) | |
1403 | ||
1404 | ;; Now for DASL | |
1405 | (when (setq header (mail-fetch-field "dasl")) | |
1406 | (setq options (plist-put | |
1407 | options 'dasl | |
1408 | (split-string header "[, ]+")))) | |
1409 | ||
1410 | ;; P3P - should get more detailed here. FIXME | |
1411 | (when (setq header (mail-fetch-field "p3p")) | |
1412 | (setq options (plist-put options 'p3p header))) | |
1413 | ||
1414 | ;; Check for whether they accept byte-range requests. | |
1415 | (when (setq header (mail-fetch-field "accept-ranges")) | |
1416 | (setq options (plist-put | |
1417 | options 'ranges | |
1418 | (delq 'none | |
1419 | (mapcar 'intern | |
1420 | (split-string header "[, ]+")))))) | |
1421 | )))) | |
1422 | (if buffer (kill-buffer buffer)) | |
1423 | options)) | |
1424 | ||
9c51663a MH |
1425 | ;; HTTPS. This used to be in url-https.el, but that file collides |
1426 | ;; with url-http.el on systems with 8-character file names. | |
1427 | (require 'tls) | |
1428 | ||
9c51663a | 1429 | (defconst url-https-default-port 443 "Default HTTPS port.") |
9c51663a | 1430 | (defconst url-https-asynchronous-p t "HTTPS retrievals are asynchronous.") |
b7270504 GM |
1431 | |
1432 | ;; FIXME what is the point of this alias being an autoload? | |
1433 | ;; Trying to use it will not cause url-http to be loaded, | |
1434 | ;; since the full alias just gets dumped into loaddefs.el. | |
1435 | ||
e77e9cf4 | 1436 | ;;;###autoload (autoload 'url-default-expander "url-expand") |
9c51663a | 1437 | ;;;###autoload |
e77e9cf4 | 1438 | (defalias 'url-https-expand-file-name 'url-default-expander) |
9c51663a MH |
1439 | |
1440 | (defmacro url-https-create-secure-wrapper (method args) | |
1441 | `(defun ,(intern (format (if method "url-https-%s" "url-https") method)) ,args | |
1442 | ,(format "HTTPS wrapper around `%s' call." (or method "url-http")) | |
784f5416 | 1443 | (let ((url-gateway-method 'tls)) |
9c51663a MH |
1444 | (,(intern (format (if method "url-http-%s" "url-http") method)) |
1445 | ,@(remove '&rest (remove '&optional args)))))) | |
1446 | ||
1447 | ;;;###autoload (autoload 'url-https "url-http") | |
1448 | (url-https-create-secure-wrapper nil (url callback cbargs)) | |
1449 | ;;;###autoload (autoload 'url-https-file-exists-p "url-http") | |
1450 | (url-https-create-secure-wrapper file-exists-p (url)) | |
1451 | ;;;###autoload (autoload 'url-https-file-readable-p "url-http") | |
1452 | (url-https-create-secure-wrapper file-readable-p (url)) | |
1453 | ;;;###autoload (autoload 'url-https-file-attributes "url-http") | |
1454 | (url-https-create-secure-wrapper file-attributes (url &optional id-format)) | |
1455 | ||
8c8b8430 SM |
1456 | (provide 'url-http) |
1457 | ||
1458 | ;;; url-http.el ends here |