2 Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
3 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
5 This file is part of GNU Wget.
7 GNU Wget is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or (at
10 your option) any later version.
12 GNU Wget is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with Wget. If not, see <http://www.gnu.org/licenses/>.
20 Additional permission under GNU GPL version 3 section 7
22 If you modify this program, or any covered work, by linking or
23 combining it with the OpenSSL project's OpenSSL library (or a
24 modified version of that library), containing parts covered by the
25 terms of the OpenSSL or SSLeay licenses, the Free Software Foundation
26 grants you additional permission to convey the resulting work.
27 Corresponding Source for a non-source form of such a combination
28 shall include the source code for the parts of OpenSSL used as well
29 as that of the covered work. */
37 #endif /* HAVE_UNISTD_H */
55 /* Total size of downloaded files. Used to enforce quota. */
56 SUM_SIZE_INT total_downloaded_bytes;
58 /* Total download time in seconds. */
59 double total_download_time;
61 /* If non-NULL, the stream to which output should be written. This
62 stream is initialized when `-O' is used. */
65 /* Whether output_document is a regular file we can manipulate,
66 i.e. not `-' or a device file. */
67 bool output_stream_regular;
76 limit_bandwidth_reset (void)
81 /* Limit the bandwidth by pausing the download for an amount of time.
82 BYTES is the number of bytes received from the network, and TIMER
83 is the timer that started at the beginning of download. */
86 limit_bandwidth (wgint bytes, struct ptimer *timer)
88 double delta_t = ptimer_read (timer) - limit_data.chunk_start;
91 limit_data.chunk_bytes += bytes;
93 /* Calculate the amount of time we expect downloading the chunk
94 should take. If in reality it took less time, sleep to
95 compensate for the difference. */
96 expected = (double) limit_data.chunk_bytes / opt.limit_rate;
98 if (expected > delta_t)
100 double slp = expected - delta_t + limit_data.sleep_adjust;
104 DEBUGP (("deferring a %.2f ms sleep (%s/%.2f).\n",
105 slp * 1000, number_to_static_string (limit_data.chunk_bytes),
109 DEBUGP (("\nsleeping %.2f ms for %s bytes, adjust %.2f ms\n",
110 slp * 1000, number_to_static_string (limit_data.chunk_bytes),
111 limit_data.sleep_adjust));
113 t0 = ptimer_read (timer);
115 t1 = ptimer_measure (timer);
117 /* Due to scheduling, we probably slept slightly longer (or
118 shorter) than desired. Calculate the difference between the
119 desired and the actual sleep, and adjust the next sleep by
121 limit_data.sleep_adjust = slp - (t1 - t0);
122 /* If sleep_adjust is very large, it's likely due to suspension
123 and not clock inaccuracy. Don't enforce those. */
124 if (limit_data.sleep_adjust > 0.5)
125 limit_data.sleep_adjust = 0.5;
126 else if (limit_data.sleep_adjust < -0.5)
127 limit_data.sleep_adjust = -0.5;
130 limit_data.chunk_bytes = 0;
131 limit_data.chunk_start = ptimer_read (timer);
135 # define MIN(i, j) ((i) <= (j) ? (i) : (j))
138 /* Write data in BUF to OUT. However, if *SKIP is non-zero, skip that
139 amount of data and decrease SKIP. Increment *TOTAL by the amount
143 write_data (FILE *out, const char *buf, int bufsize, wgint *skip,
144 wgint *written, int flags)
146 static int cr_pending = 0; /* Found CR in ASCII FTP data. */
164 /* Note: This code assumes that "\n" is the universal line ending
165 character, as on UNIX and VMS. If this is not true, then here's
170 # define EOL_STRING "\n"
172 # define EOL_STRING "\r\n"
173 #endif /* 1 [else] */
174 #define EOL_STRING_LEN (sizeof( EOL_STRING)- 1)
176 if (flags & rb_ftp_ascii)
180 /* ASCII transfer. Put out lines delimited by CRLF. */
181 bufend = buf+ bufsize;
184 /* If CR, put out any pending CR, then set CR-pending flag. */
189 fwrite ("\r", 1, 1, out);
201 /* Found FTP EOL (CRLF). Put out local EOL. */
202 fwrite (EOL_STRING, 1, EOL_STRING_LEN, out);
203 *written += EOL_STRING_LEN;
207 /* Normal character. Put out pending CR and it. */
208 fwrite ("\r", 1, 1, out);
209 fwrite (buf, 1, 1, out);
217 /* Normal character. Put it out. */
218 fwrite (buf, 1, 1, out);
226 /* Image transfer. Put out buffer. */
227 fwrite (buf, 1, bufsize, out);
231 /* Immediately flush the downloaded data. This should not hinder
232 performance: fast downloads will arrive in large 16K chunks
233 (which stdio would write out immediately anyway), and slow
234 downloads wouldn't be limited by disk speed. */
237 Perhaps it shouldn't hinder performance, but it sure does, at least
238 on VMS (more than 2X). Rather than speculate on what it should or
239 shouldn't do, it might make more sense to test it. Even better, it
240 might be nice to explain what possible benefit it could offer, as
241 it appears to be a clear invitation to poor performance with no
242 actual justification. (Also, why 16K? Anyone test other values?)
246 #endif /* ndef __VMS */
247 return !ferror (out);
250 /* Read the contents of file descriptor FD until it the connection
251 terminates or a read error occurs. The data is read in portions of
252 up to 16K and written to OUT as it arrives. If opt.verbose is set,
253 the progress is shown.
255 TOREAD is the amount of data expected to arrive, normally only used
256 by the progress gauge.
258 STARTPOS is the position from which the download starts, used by
259 the progress gauge. If QTYREAD is non-NULL, the value it points to
260 is incremented by the amount of data read from the network. If
261 QTYWRITTEN is non-NULL, the value it points to is incremented by
262 the amount of data written to disk. The time it took to download
263 the data is stored to ELAPSED.
265 The function exits and returns the amount of data read. In case of
266 error while reading data, -1 is returned. In case of error while
267 writing data, -2 is returned. */
270 fd_read_body (int fd, FILE *out, wgint toread, wgint startpos,
271 wgint *qtyread, wgint *qtywritten, double *elapsed, int flags)
275 static char dlbuf[16384];
276 int dlbufsize = sizeof (dlbuf);
278 struct ptimer *timer = NULL;
279 double last_successful_read_tm = 0;
281 /* The progress gauge, set according to the user preferences. */
282 void *progress = NULL;
284 /* Non-zero if the progress gauge is interactive, i.e. if it can
285 continually update the display. When true, smaller timeout
286 values are used so that the gauge can update the display when
287 data arrives slowly. */
288 bool progress_interactive = false;
290 bool exact = !!(flags & rb_read_exactly);
293 /* How much data we've read/written. */
295 wgint sum_written = 0;
297 if (flags & rb_skip_startpos)
302 /* If we're skipping STARTPOS bytes, pass 0 as the INITIAL
303 argument to progress_create because the indicator doesn't
304 (yet) know about "skipping" data. */
305 progress = progress_create (skip ? 0 : startpos, startpos + toread);
306 progress_interactive = progress_interactive_p (progress);
310 limit_bandwidth_reset ();
312 /* A timer is needed for tracking progress, for throttling, and for
313 tracking elapsed time. If either of these are requested, start
315 if (progress || opt.limit_rate || elapsed)
317 timer = ptimer_new ();
318 last_successful_read_tm = 0;
321 /* Use a smaller buffer for low requested bandwidths. For example,
322 with --limit-rate=2k, it doesn't make sense to slurp in 16K of
323 data and then sleep for 8s. With buffer size equal to the limit,
324 we never have to sleep for more than one second. */
325 if (opt.limit_rate && opt.limit_rate < dlbufsize)
326 dlbufsize = opt.limit_rate;
328 /* Read from FD while there is data to read. Normally toread==0
329 means that it is unknown how much data is to arrive. However, if
330 EXACT is set, then toread==0 means what it says: that no data
332 while (!exact || (sum_read < toread))
334 int rdsize = exact ? MIN (toread - sum_read, dlbufsize) : dlbufsize;
335 double tmout = opt.read_timeout;
336 if (progress_interactive)
338 /* For interactive progress gauges, always specify a ~1s
339 timeout, so that the gauge can be updated regularly even
340 when the data arrives very slowly or stalls. */
342 if (opt.read_timeout)
345 waittm = ptimer_read (timer) - last_successful_read_tm;
346 if (waittm + tmout > opt.read_timeout)
348 /* Don't let total idle time exceed read timeout. */
349 tmout = opt.read_timeout - waittm;
352 /* We've already exceeded the timeout. */
353 ret = -1, errno = ETIMEDOUT;
359 ret = fd_read (fd, dlbuf, rdsize, tmout);
361 if (progress_interactive && ret < 0 && errno == ETIMEDOUT)
362 ret = 0; /* interactive timeout, handled above */
364 break; /* EOF or read error */
366 if (progress || opt.limit_rate)
368 ptimer_measure (timer);
370 last_successful_read_tm = ptimer_read (timer);
376 if (!write_data (out, dlbuf, ret, &skip, &sum_written, flags))
384 limit_bandwidth (ret, timer);
387 progress_update (progress, ret, ptimer_read (timer));
389 if (toread > 0 && !opt.quiet)
390 ws_percenttitle (100.0 *
391 (startpos + sum_read) / (startpos + toread));
399 progress_finish (progress, ptimer_read (timer));
402 *elapsed = ptimer_read (timer);
404 ptimer_destroy (timer);
407 *qtyread += sum_read;
409 *qtywritten += sum_written;
414 /* Read a hunk of data from FD, up until a terminator. The hunk is
415 limited by whatever the TERMINATOR callback chooses as its
416 terminator. For example, if terminator stops at newline, the hunk
417 will consist of a line of data; if terminator stops at two
418 newlines, it can be used to read the head of an HTTP response.
419 Upon determining the boundary, the function returns the data (up to
420 the terminator) in malloc-allocated storage.
422 In case of read error, NULL is returned. In case of EOF and no
423 data read, NULL is returned and errno set to 0. In case of having
424 read some data, but encountering EOF before seeing the terminator,
425 the data that has been read is returned, but it will (obviously)
426 not contain the terminator.
428 The TERMINATOR function is called with three arguments: the
429 beginning of the data read so far, the beginning of the current
430 block of peeked-at data, and the length of the current block.
431 Depending on its needs, the function is free to choose whether to
432 analyze all data or just the newly arrived data. If TERMINATOR
433 returns NULL, it means that the terminator has not been seen.
434 Otherwise it should return a pointer to the charactre immediately
435 following the terminator.
437 The idea is to be able to read a line of input, or otherwise a hunk
438 of text, such as the head of an HTTP request, without crossing the
439 boundary, so that the next call to fd_read etc. reads the data
440 after the hunk. To achieve that, this function does the following:
442 1. Peek at incoming data.
444 2. Determine whether the peeked data, along with the previously
445 read data, includes the terminator.
447 2a. If yes, read the data until the end of the terminator, and
450 2b. If no, read the peeked data and goto 1.
452 The function is careful to assume as little as possible about the
453 implementation of peeking. For example, every peek is followed by
454 a read. If the read returns a different amount of data, the
455 process is retried until all data arrives safely.
457 SIZEHINT is the buffer size sufficient to hold all the data in the
458 typical case (it is used as the initial buffer size). MAXSIZE is
459 the maximum amount of memory this function is allowed to allocate,
460 or 0 if no upper limit is to be enforced.
462 This function should be used as a building block for other
463 functions -- see fd_read_line as a simple example. */
466 fd_read_hunk (int fd, hunk_terminator_t terminator, long sizehint, long maxsize)
468 long bufsize = sizehint;
469 char *hunk = xmalloc (bufsize);
470 int tail = 0; /* tail position in HUNK */
472 assert (maxsize >= bufsize);
477 int pklen, rdlen, remain;
479 /* First, peek at the available data. */
481 pklen = fd_peek (fd, hunk + tail, bufsize - 1 - tail, -1);
487 end = terminator (hunk, hunk + tail, pklen);
490 /* The data contains the terminator: we'll drain the data up
491 to the end of the terminator. */
492 remain = end - (hunk + tail);
493 assert (remain >= 0);
496 /* No more data needs to be read. */
500 if (bufsize - 1 < tail + remain)
502 bufsize = tail + remain + 1;
503 hunk = xrealloc (hunk, bufsize);
507 /* No terminator: simply read the data we know is (or should
511 /* Now, read the data. Note that we make no assumptions about
512 how much data we'll get. (Some TCP stacks are notorious for
513 read returning less data than the previous MSG_PEEK.) */
515 rdlen = fd_read (fd, hunk + tail, remain, 0);
528 /* EOF without anything having been read */
534 /* EOF seen: return the data we've read. */
537 if (end && rdlen == remain)
538 /* The terminator was seen and the remaining data drained --
539 we got what we came for. */
542 /* Keep looping until all the data arrives. */
544 if (tail == bufsize - 1)
546 /* Double the buffer size, but refuse to allocate more than
548 if (maxsize && bufsize >= maxsize)
555 if (maxsize && bufsize > maxsize)
557 hunk = xrealloc (hunk, bufsize);
563 line_terminator (const char *start, const char *peeked, int peeklen)
565 const char *p = memchr (peeked, '\n', peeklen);
567 /* p+1 because the line must include '\n' */
572 /* The maximum size of the single line we agree to accept. This is
573 not meant to impose an arbitrary limit, but to protect the user
574 from Wget slurping up available memory upon encountering malicious
575 or buggy server output. Define it to 0 to remove the limit. */
576 #define FD_READ_LINE_MAX 4096
578 /* Read one line from FD and return it. The line is allocated using
579 malloc, but is never larger than FD_READ_LINE_MAX.
581 If an error occurs, or if no data can be read, NULL is returned.
582 In the former case errno indicates the error condition, and in the
583 latter case, errno is NULL. */
586 fd_read_line (int fd)
588 return fd_read_hunk (fd, line_terminator, 128, FD_READ_LINE_MAX);
591 /* Return a printed representation of the download rate, along with
592 the units appropriate for the download speed. */
595 retr_rate (wgint bytes, double secs)
598 static const char *rate_names[] = {"B/s", "KB/s", "MB/s", "GB/s" };
601 double dlrate = calc_rate (bytes, secs, &units);
602 /* Use more digits for smaller numbers (regardless of unit used),
603 e.g. "1022", "247", "12.5", "2.38". */
604 sprintf (res, "%.*f %s",
605 dlrate >= 99.95 ? 0 : dlrate >= 9.995 ? 1 : 2,
606 dlrate, rate_names[units]);
611 /* Calculate the download rate and trim it as appropriate for the
612 speed. Appropriate means that if rate is greater than 1K/s,
613 kilobytes are used, and if rate is greater than 1MB/s, megabytes
616 UNITS is zero for B/s, one for KB/s, two for MB/s, and three for
620 calc_rate (wgint bytes, double secs, int *units)
628 /* If elapsed time is exactly zero, it means we're under the
629 resolution of the timer. This can easily happen on systems
630 that use time() for the timer. Since the interval lies between
631 0 and the timer's resolution, assume half the resolution. */
632 secs = ptimer_resolution () / 2.0;
634 dlrate = bytes / secs;
637 else if (dlrate < 1024.0 * 1024.0)
638 *units = 1, dlrate /= 1024.0;
639 else if (dlrate < 1024.0 * 1024.0 * 1024.0)
640 *units = 2, dlrate /= (1024.0 * 1024.0);
642 /* Maybe someone will need this, one day. */
643 *units = 3, dlrate /= (1024.0 * 1024.0 * 1024.0);
649 #define SUSPEND_POST_DATA do { \
650 post_data_suspended = true; \
651 saved_post_data = opt.post_data; \
652 saved_post_file_name = opt.post_file_name; \
653 opt.post_data = NULL; \
654 opt.post_file_name = NULL; \
657 #define RESTORE_POST_DATA do { \
658 if (post_data_suspended) \
660 opt.post_data = saved_post_data; \
661 opt.post_file_name = saved_post_file_name; \
662 post_data_suspended = false; \
666 static char *getproxy (struct url *);
668 /* Retrieve the given URL. Decides which loop to call -- HTTP, FTP,
671 /* #### This function should be rewritten so it doesn't return from
675 retrieve_url (const char *origurl, char **file, char **newloc,
676 const char *refurl, int *dt, bool recursive)
680 bool location_changed;
682 char *mynewloc, *proxy;
683 struct url *u, *proxy_url;
684 int up_error_code; /* url parse error code */
686 int redirection_count = 0;
688 bool post_data_suspended = false;
689 char *saved_post_data = NULL;
690 char *saved_post_file_name = NULL;
692 /* If dt is NULL, use local storage. */
698 url = xstrdup (origurl);
704 u = url_parse (url, &up_error_code);
707 logprintf (LOG_NOTQUIET, "%s: %s.\n", url, url_error (up_error_code));
713 refurl = opt.referer;
722 proxy = getproxy (u);
725 /* Parse the proxy URL. */
726 proxy_url = url_parse (proxy, &up_error_code);
729 logprintf (LOG_NOTQUIET, _("Error parsing proxy URL %s: %s.\n"),
730 proxy, url_error (up_error_code));
735 if (proxy_url->scheme != SCHEME_HTTP && proxy_url->scheme != u->scheme)
737 logprintf (LOG_NOTQUIET, _("Error in proxy URL %s: Must be HTTP.\n"), proxy);
738 url_free (proxy_url);
745 if (u->scheme == SCHEME_HTTP
747 || u->scheme == SCHEME_HTTPS
749 || (proxy_url && proxy_url->scheme == SCHEME_HTTP))
751 result = http_loop (u, &mynewloc, &local_file, refurl, dt, proxy_url);
753 else if (u->scheme == SCHEME_FTP)
755 /* If this is a redirection, temporarily turn off opt.ftp_glob
756 and opt.recursive, both being undesirable when following
758 bool oldrec = recursive, glob = opt.ftp_glob;
759 if (redirection_count)
760 oldrec = glob = false;
762 result = ftp_loop (u, dt, proxy_url, recursive, glob);
765 /* There is a possibility of having HTTP being redirected to
766 FTP. In these cases we must decide whether the text is HTML
767 according to the suffix. The HTML suffixes are `.html',
768 `.htm' and a few others, case-insensitive. */
769 if (redirection_count && local_file && u->scheme == SCHEME_FTP)
771 if (has_html_suffix_p (local_file))
778 url_free (proxy_url);
782 location_changed = (result == NEWLOCATION);
783 if (location_changed)
785 char *construced_newloc;
786 struct url *newloc_parsed;
788 assert (mynewloc != NULL);
793 /* The HTTP specs only allow absolute URLs to appear in
794 redirects, but a ton of boneheaded webservers and CGIs out
795 there break the rules and use relative URLs, and popular
796 browsers are lenient about this, so wget should be too. */
797 construced_newloc = uri_merge (url, mynewloc);
799 mynewloc = construced_newloc;
801 /* Now, see if this new location makes sense. */
802 newloc_parsed = url_parse (mynewloc, &up_error_code);
805 logprintf (LOG_NOTQUIET, "%s: %s.\n", escnonprint_uri (mynewloc),
806 url_error (up_error_code));
814 /* Now mynewloc will become newloc_parsed->url, because if the
815 Location contained relative paths like .././something, we
816 don't want that propagating as url. */
818 mynewloc = xstrdup (newloc_parsed->url);
820 /* Check for max. number of redirections. */
821 if (++redirection_count > opt.max_redirect)
823 logprintf (LOG_NOTQUIET, _("%d redirections exceeded.\n"),
825 url_free (newloc_parsed);
838 /* If we're being redirected from POST, we don't want to POST
839 again. Many requests answer POST with a redirection to an
840 index page; that redirection is clearly a GET. We "suspend"
841 POST data for the duration of the redirections, and restore
842 it when we're done. */
843 if (!post_data_suspended)
853 register_download (u->url, local_file);
854 if (redirection_count && 0 != strcmp (origurl, u->url))
855 register_redirection (origurl, u->url);
857 register_html (u->url, local_file);
862 *file = local_file ? local_file : NULL;
864 xfree_null (local_file);
868 if (redirection_count)
887 /* Find the URLs in the file and call retrieve_url() for each of them.
888 If HTML is true, treat the file as HTML, and construct the URLs
891 If opt.recursive is set, call retrieve_tree() for each file. */
894 retrieve_from_file (const char *file, bool html, int *count)
897 struct urlpos *url_list, *cur_url;
899 url_list = (html ? get_urls_html (file, NULL, NULL)
900 : get_urls_file (file));
901 status = RETROK; /* Suppose everything is OK. */
902 *count = 0; /* Reset the URL count. */
904 for (cur_url = url_list; cur_url; cur_url = cur_url->next, ++*count)
906 char *filename = NULL, *new_file = NULL;
909 if (cur_url->ignore_when_downloading)
912 if (opt.quota && total_downloaded_bytes > opt.quota)
917 if ((opt.recursive || opt.page_requisites)
918 && (cur_url->url->scheme != SCHEME_FTP || getproxy (cur_url->url)))
920 int old_follow_ftp = opt.follow_ftp;
922 /* Turn opt.follow_ftp on in case of recursive FTP retrieval */
923 if (cur_url->url->scheme == SCHEME_FTP)
926 status = retrieve_tree (cur_url->url->url);
928 opt.follow_ftp = old_follow_ftp;
931 status = retrieve_url (cur_url->url->url, &filename, &new_file, NULL, &dt, opt.recursive);
933 if (filename && opt.delete_after && file_exists_p (filename))
936 Removing file due to --delete-after in retrieve_from_file():\n"));
937 logprintf (LOG_VERBOSE, _("Removing %s.\n"), filename);
938 if (unlink (filename))
939 logprintf (LOG_NOTQUIET, "unlink: %s\n", strerror (errno));
943 xfree_null (new_file);
944 xfree_null (filename);
947 /* Free the linked list of URL-s. */
948 free_urlpos (url_list);
953 /* Print `giving up', or `retrying', depending on the impending
954 action. N1 and N2 are the attempt number and the attempt limit. */
956 printwhat (int n1, int n2)
958 logputs (LOG_VERBOSE, (n1 == n2) ? _("Giving up.\n\n") : _("Retrying.\n\n"));
961 /* If opt.wait or opt.waitretry are specified, and if certain
962 conditions are met, sleep the appropriate number of seconds. See
963 the documentation of --wait and --waitretry for more information.
965 COUNT is the count of current retrieval, beginning with 1. */
968 sleep_between_retrievals (int count)
970 static bool first_retrieval = true;
974 /* Don't sleep before the very first retrieval. */
975 first_retrieval = false;
979 if (opt.waitretry && count > 1)
981 /* If opt.waitretry is specified and this is a retry, wait for
982 COUNT-1 number of seconds, or for opt.waitretry seconds. */
983 if (count <= opt.waitretry)
986 xsleep (opt.waitretry);
990 if (!opt.random_wait || count > 1)
991 /* If random-wait is not specified, or if we are sleeping
992 between retries of the same download, sleep the fixed
997 /* Sleep a random amount of time averaging in opt.wait
998 seconds. The sleeping amount ranges from 0.5*opt.wait to
1000 double waitsecs = (0.5 + random_float ()) * opt.wait;
1001 DEBUGP (("sleep_between_retrievals: avg=%f,sleep=%f\n",
1002 opt.wait, waitsecs));
1008 /* Free the linked list of urlpos. */
1010 free_urlpos (struct urlpos *l)
1014 struct urlpos *next = l->next;
1017 xfree_null (l->local_name);
1023 /* Rotate FNAME opt.backups times */
1025 rotate_backups(const char *fname)
1027 int maxlen = strlen (fname) + 1 + numdigit (opt.backups) + 1;
1028 char *from = (char *)alloca (maxlen);
1029 char *to = (char *)alloca (maxlen);
1033 if (stat (fname, &sb) == 0)
1034 if (S_ISREG (sb.st_mode) == 0)
1037 for (i = opt.backups; i > 1; i--)
1039 sprintf (from, "%s.%d", fname, i - 1);
1040 sprintf (to, "%s.%d", fname, i);
1044 sprintf (to, "%s.%d", fname, 1);
1048 static bool no_proxy_match (const char *, const char **);
1050 /* Return the URL of the proxy appropriate for url U. */
1053 getproxy (struct url *u)
1056 char *rewritten_url;
1057 static char rewritten_storage[1024];
1061 if (no_proxy_match (u->host, (const char **)opt.no_proxy))
1067 proxy = opt.http_proxy ? opt.http_proxy : getenv ("http_proxy");
1071 proxy = opt.https_proxy ? opt.https_proxy : getenv ("https_proxy");
1075 proxy = opt.ftp_proxy ? opt.ftp_proxy : getenv ("ftp_proxy");
1077 case SCHEME_INVALID:
1080 if (!proxy || !*proxy)
1083 /* Handle shorthands. `rewritten_storage' is a kludge to allow
1084 getproxy() to return static storage. */
1085 rewritten_url = rewrite_shorthand_url (proxy);
1088 strncpy (rewritten_storage, rewritten_url, sizeof (rewritten_storage));
1089 rewritten_storage[sizeof (rewritten_storage) - 1] = '\0';
1090 proxy = rewritten_storage;
1096 /* Returns true if URL would be downloaded through a proxy. */
1099 url_uses_proxy (const char *url)
1102 struct url *u = url_parse (url, NULL);
1105 ret = getproxy (u) != NULL;
1110 /* Should a host be accessed through proxy, concerning no_proxy? */
1112 no_proxy_match (const char *host, const char **no_proxy)
1117 return sufmatch (no_proxy, host);