X-Git-Url: http://sjero.net/git/?p=wget;a=blobdiff_plain;f=src%2Fretr.c;h=b667ca2ff3cf6ecb4edca9c1148e856f68b0ecbe;hp=5d9795ad67ac7177163f96d1dff28f2eaa6bb9c7;hb=d763f8bf6d6e13ce006ffab616cc8a77e747a633;hpb=d9fea91a0a319e348adb504bd3edff148ff3d8a0
diff --git a/src/retr.c b/src/retr.c
index 5d9795ad..b667ca2f 100644
--- a/src/retr.c
+++ b/src/retr.c
@@ -1,11 +1,12 @@
/* File retrieval.
- Copyright (C) 1995, 1996, 1997, 1998, 2000, 2001 Free Software Foundation, Inc.
+ Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
+ 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
This file is part of GNU Wget.
GNU Wget is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2 of the License, or (at
+the Free Software Foundation; either version 3 of the License, or (at
your option) any later version.
GNU Wget is distributed in the hope that it will be useful,
@@ -14,64 +15,61 @@ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
-along with Wget; if not, write to the Free Software
-Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+along with Wget. If not, see .
-In addition, as a special exception, the Free Software Foundation
-gives permission to link the code of its release of Wget with the
-OpenSSL project's "OpenSSL" library (or with modified versions of it
-that use the same license as the "OpenSSL" library), and distribute
-the linked executables. You must obey the GNU General Public License
-in all respects for all of the code used other than "OpenSSL". If you
-modify this file, you may extend this exception to your version of the
-file, but you are not obligated to do so. If you do not wish to do
-so, delete this exception statement from your version. */
+Additional permission under GNU GPL version 3 section 7
-#include
+If you modify this program, or any covered work, by linking or
+combining it with the OpenSSL project's OpenSSL library (or a
+modified version of that library), containing parts covered by the
+terms of the OpenSSL or SSLeay licenses, the Free Software Foundation
+grants you additional permission to convey the resulting work.
+Corresponding Source for a non-source form of such a combination
+shall include the source code for the parts of OpenSSL used as well
+as that of the covered work. */
+
+#include "wget.h"
#include
#include
-#include
#ifdef HAVE_UNISTD_H
# include
#endif /* HAVE_UNISTD_H */
#include
-#ifdef HAVE_STRING_H
-# include
-#else
-# include
-#endif /* HAVE_STRING_H */
+#include
#include
-#include "wget.h"
#include "utils.h"
#include "retr.h"
#include "progress.h"
#include "url.h"
#include "recur.h"
#include "ftp.h"
+#include "http.h"
#include "host.h"
#include "connect.h"
#include "hash.h"
#include "convert.h"
+#include "ptimer.h"
+#include "html-url.h"
+#include "iri.h"
-#ifdef HAVE_SSL
-# include "gen_sslfunc.h" /* for ssl_iread */
-#endif
-
-#ifndef errno
-extern int errno;
-#endif
+/* Total size of downloaded files. Used to enforce quota. */
+SUM_SIZE_INT total_downloaded_bytes;
-/* See the comment in gethttp() why this is needed. */
-int global_download_count;
+/* Total download time in seconds. */
+double total_download_time;
-/* Total size of downloaded files. Used to enforce quota. */
-LARGE_INT total_downloaded_bytes;
+/* If non-NULL, the stream to which output should be written. This
+ stream is initialized when `-O' is used. */
+FILE *output_stream;
+/* Whether output_document is a regular file we can manipulate,
+ i.e. not `-' or a device file. */
+bool output_stream_regular;
static struct {
- long chunk_bytes;
+ wgint chunk_bytes;
double chunk_start;
double sleep_adjust;
} limit_data;
@@ -79,8 +77,7 @@ static struct {
static void
limit_bandwidth_reset (void)
{
- limit_data.chunk_bytes = 0;
- limit_data.chunk_start = 0;
+ xzero (limit_data);
}
/* Limit the bandwidth by pausing the download for an amount of time.
@@ -88,9 +85,9 @@ limit_bandwidth_reset (void)
is the timer that started at the beginning of download. */
static void
-limit_bandwidth (long bytes, struct wget_timer *timer)
+limit_bandwidth (wgint bytes, struct ptimer *timer)
{
- double delta_t = wtimer_read (timer) - limit_data.chunk_start;
+ double delta_t = ptimer_read (timer) - limit_data.chunk_start;
double expected;
limit_data.chunk_bytes += bytes;
@@ -98,66 +95,124 @@ limit_bandwidth (long bytes, struct wget_timer *timer)
/* Calculate the amount of time we expect downloading the chunk
should take. If in reality it took less time, sleep to
compensate for the difference. */
- expected = 1000.0 * limit_data.chunk_bytes / opt.limit_rate;
+ expected = (double) limit_data.chunk_bytes / opt.limit_rate;
if (expected > delta_t)
{
double slp = expected - delta_t + limit_data.sleep_adjust;
double t0, t1;
- if (slp < 200)
- {
- DEBUGP (("deferring a %.2f ms sleep (%ld/%.2f).\n",
- slp, limit_data.chunk_bytes, delta_t));
- return;
- }
- DEBUGP (("\nsleeping %.2f ms for %ld bytes, adjust %.2f ms\n",
- slp, limit_data.chunk_bytes, limit_data.sleep_adjust));
-
- t0 = wtimer_read (timer);
- xsleep (slp / 1000);
- wtimer_update (timer);
- t1 = wtimer_read (timer);
+ if (slp < 0.2)
+ {
+ DEBUGP (("deferring a %.2f ms sleep (%s/%.2f).\n",
+ slp * 1000, number_to_static_string (limit_data.chunk_bytes),
+ delta_t));
+ return;
+ }
+ DEBUGP (("\nsleeping %.2f ms for %s bytes, adjust %.2f ms\n",
+ slp * 1000, number_to_static_string (limit_data.chunk_bytes),
+ limit_data.sleep_adjust));
+
+ t0 = ptimer_read (timer);
+ xsleep (slp);
+ t1 = ptimer_measure (timer);
/* Due to scheduling, we probably slept slightly longer (or
- shorter) than desired. Calculate the difference between the
- desired and the actual sleep, and adjust the next sleep by
- that amount. */
+ shorter) than desired. Calculate the difference between the
+ desired and the actual sleep, and adjust the next sleep by
+ that amount. */
limit_data.sleep_adjust = slp - (t1 - t0);
+ /* If sleep_adjust is very large, it's likely due to suspension
+ and not clock inaccuracy. Don't enforce those. */
+ if (limit_data.sleep_adjust > 0.5)
+ limit_data.sleep_adjust = 0.5;
+ else if (limit_data.sleep_adjust < -0.5)
+ limit_data.sleep_adjust = -0.5;
}
limit_data.chunk_bytes = 0;
- limit_data.chunk_start = wtimer_read (timer);
+ limit_data.chunk_start = ptimer_read (timer);
}
-#define MIN(i, j) ((i) <= (j) ? (i) : (j))
+#ifndef MIN
+# define MIN(i, j) ((i) <= (j) ? (i) : (j))
+#endif
+
+/* Write data in BUF to OUT. However, if *SKIP is non-zero, skip that
+ amount of data and decrease SKIP. Increment *TOTAL by the amount
+ of data written. */
+
+static int
+write_data (FILE *out, const char *buf, int bufsize, wgint *skip,
+ wgint *written)
+{
+ if (!out)
+ return 1;
+ if (*skip > bufsize)
+ {
+ *skip -= bufsize;
+ return 1;
+ }
+ if (*skip)
+ {
+ buf += *skip;
+ bufsize -= *skip;
+ *skip = 0;
+ if (bufsize == 0)
+ return 1;
+ }
-/* Reads the contents of file descriptor FD, until it is closed, or a
- read error occurs. The data is read in 8K chunks, and stored to
- stream fp, which should have been open for writing.
+ fwrite (buf, 1, bufsize, out);
+ *written += bufsize;
+
+ /* Immediately flush the downloaded data. This should not hinder
+ performance: fast downloads will arrive in large 16K chunks
+ (which stdio would write out immediately anyway), and slow
+ downloads wouldn't be limited by disk speed. */
+
+ /* 2005-04-20 SMS.
+ Perhaps it shouldn't hinder performance, but it sure does, at least
+ on VMS (more than 2X). Rather than speculate on what it should or
+ shouldn't do, it might make more sense to test it. Even better, it
+ might be nice to explain what possible benefit it could offer, as
+ it appears to be a clear invitation to poor performance with no
+ actual justification. (Also, why 16K? Anyone test other values?)
+ */
+#ifndef __VMS
+ fflush (out);
+#endif /* ndef __VMS */
+ return !ferror (out);
+}
- The EXPECTED argument is passed to show_progress() unchanged, but
- otherwise ignored.
+/* Read the contents of file descriptor FD until it the connection
+ terminates or a read error occurs. The data is read in portions of
+ up to 16K and written to OUT as it arrives. If opt.verbose is set,
+ the progress is shown.
- If opt.verbose is set, the progress is also shown. RESTVAL
- represents a value from which to start downloading (which will be
- shown accordingly). If RESTVAL is non-zero, the stream should have
- been open for appending.
+ TOREAD is the amount of data expected to arrive, normally only used
+ by the progress gauge.
- The function exits and returns codes of 0, -1 and -2 if the
- connection was closed, there was a read error, or if it could not
- write to the output stream, respectively. */
+ STARTPOS is the position from which the download starts, used by
+ the progress gauge. If QTYREAD is non-NULL, the value it points to
+ is incremented by the amount of data read from the network. If
+ QTYWRITTEN is non-NULL, the value it points to is incremented by
+ the amount of data written to disk. The time it took to download
+ the data is stored to ELAPSED.
+
+ The function exits and returns the amount of data read. In case of
+ error while reading data, -1 is returned. In case of error while
+ writing data, -2 is returned. */
int
-fd_read_body (int fd, FILE *out, long *len, long restval, long expected,
- int use_expected, double *elapsed)
+fd_read_body (int fd, FILE *out, wgint toread, wgint startpos,
+ wgint *qtyread, wgint *qtywritten, double *elapsed, int flags)
{
- int res = 0;
+ int ret = 0;
static char dlbuf[16384];
int dlbufsize = sizeof (dlbuf);
- struct wget_timer *timer = wtimer_allocate ();
- double last_successful_read_tm;
+ struct ptimer *timer = NULL;
+ double last_successful_read_tm = 0;
/* The progress gauge, set according to the user preferences. */
void *progress = NULL;
@@ -166,20 +221,39 @@ fd_read_body (int fd, FILE *out, long *len, long restval, long expected,
continually update the display. When true, smaller timeout
values are used so that the gauge can update the display when
data arrives slowly. */
- int progress_interactive = 0;
+ bool progress_interactive = false;
+
+ bool exact = !!(flags & rb_read_exactly);
+ wgint skip = 0;
+
+ /* How much data we've read/written. */
+ wgint sum_read = 0;
+ wgint sum_written = 0;
- *len = restval;
+ if (flags & rb_skip_startpos)
+ skip = startpos;
if (opt.verbose)
{
- progress = progress_create (restval, expected);
+ /* If we're skipping STARTPOS bytes, pass 0 as the INITIAL
+ argument to progress_create because the indicator doesn't
+ (yet) know about "skipping" data. */
+ wgint start = skip ? 0 : startpos;
+ progress = progress_create (start, start + toread);
progress_interactive = progress_interactive_p (progress);
}
if (opt.limit_rate)
limit_bandwidth_reset ();
- wtimer_reset (timer);
- last_successful_read_tm = 0;
+
+ /* A timer is needed for tracking progress, for throttling, and for
+ tracking elapsed time. If either of these are requested, start
+ the timer. */
+ if (progress || opt.limit_rate || elapsed)
+ {
+ timer = ptimer_new ();
+ last_successful_read_tm = 0;
+ }
/* Use a smaller buffer for low requested bandwidths. For example,
with --limit-rate=2k, it doesn't make sense to slurp in 16K of
@@ -188,97 +262,151 @@ fd_read_body (int fd, FILE *out, long *len, long restval, long expected,
if (opt.limit_rate && opt.limit_rate < dlbufsize)
dlbufsize = opt.limit_rate;
- /* Read from fd while there is available data.
-
- Normally, if expected is 0, it means that it is not known how
- much data is expected. However, if use_expected is specified,
- then expected being zero means exactly that. */
- while (!use_expected || (*len < expected))
+ /* Read from FD while there is data to read. Normally toread==0
+ means that it is unknown how much data is to arrive. However, if
+ EXACT is set, then toread==0 means what it says: that no data
+ should be read. */
+ while (!exact || (sum_read < toread))
{
- int amount_to_read = (use_expected
- ? MIN (expected - *len, dlbufsize) : dlbufsize);
+ int rdsize = exact ? MIN (toread - sum_read, dlbufsize) : dlbufsize;
double tmout = opt.read_timeout;
if (progress_interactive)
- {
- double waittm;
- /* For interactive progress gauges, always specify a ~1s
- timeout, so that the gauge can be updated regularly even
- when the data arrives very slowly or stalls. */
- tmout = 0.95;
- waittm = (wtimer_read (timer) - last_successful_read_tm) / 1000;
- if (waittm + tmout > opt.read_timeout)
- {
- /* Don't allow waiting time to exceed read timeout. */
- tmout = opt.read_timeout - waittm;
- if (tmout < 0)
- {
- /* We've already exceeded the timeout. */
- res = -1, errno = ETIMEDOUT;
- break;
- }
- }
- }
- res = fd_read (fd, dlbuf, amount_to_read, tmout);
-
- if (res == 0 || (res < 0 && errno != ETIMEDOUT))
- break;
- else if (res < 0)
- res = 0; /* timeout */
-
- wtimer_update (timer);
- if (res > 0)
- {
- fwrite (dlbuf, 1, res, out);
- /* Always flush the contents of the network packet. This
- should not hinder performance: fast downloads will be
- received in 16K chunks (which stdio would write out
- anyway), and slow downloads won't be limited by disk
- performance. */
- fflush (out);
- if (ferror (out))
- {
- res = -2;
- goto out;
- }
- last_successful_read_tm = wtimer_read (timer);
- }
+ {
+ /* For interactive progress gauges, always specify a ~1s
+ timeout, so that the gauge can be updated regularly even
+ when the data arrives very slowly or stalls. */
+ tmout = 0.95;
+ if (opt.read_timeout)
+ {
+ double waittm;
+ waittm = ptimer_read (timer) - last_successful_read_tm;
+ if (waittm + tmout > opt.read_timeout)
+ {
+ /* Don't let total idle time exceed read timeout. */
+ tmout = opt.read_timeout - waittm;
+ if (tmout < 0)
+ {
+ /* We've already exceeded the timeout. */
+ ret = -1, errno = ETIMEDOUT;
+ break;
+ }
+ }
+ }
+ }
+ ret = fd_read (fd, dlbuf, rdsize, tmout);
+
+ if (progress_interactive && ret < 0 && errno == ETIMEDOUT)
+ ret = 0; /* interactive timeout, handled above */
+ else if (ret <= 0)
+ break; /* EOF or read error */
+
+ if (progress || opt.limit_rate)
+ {
+ ptimer_measure (timer);
+ if (ret > 0)
+ last_successful_read_tm = ptimer_read (timer);
+ }
+
+ if (ret > 0)
+ {
+ sum_read += ret;
+ if (!write_data (out, dlbuf, ret, &skip, &sum_written))
+ {
+ ret = -2;
+ goto out;
+ }
+ }
if (opt.limit_rate)
- limit_bandwidth (res, timer);
+ limit_bandwidth (ret, timer);
- *len += res;
if (progress)
- progress_update (progress, res, wtimer_read (timer));
+ progress_update (progress, ret, ptimer_read (timer));
#ifdef WINDOWS
- if (use_expected && expected > 0)
- ws_percenttitle (100.0 * (double)(*len) / (double)expected);
+ if (toread > 0 && !opt.quiet)
+ ws_percenttitle (100.0 *
+ (startpos + sum_read) / (startpos + toread));
#endif
}
- if (res < -1)
- res = -1;
+ if (ret < -1)
+ ret = -1;
out:
if (progress)
- progress_finish (progress, wtimer_read (timer));
+ progress_finish (progress, ptimer_read (timer));
+
if (elapsed)
- *elapsed = wtimer_read (timer);
- wtimer_delete (timer);
+ *elapsed = ptimer_read (timer);
+ if (timer)
+ ptimer_destroy (timer);
- return res;
+ if (qtyread)
+ *qtyread += sum_read;
+ if (qtywritten)
+ *qtywritten += sum_written;
+
+ return ret;
}
-typedef const char *(*finder_t) PARAMS ((const char *, int, int));
+/* Read a hunk of data from FD, up until a terminator. The hunk is
+ limited by whatever the TERMINATOR callback chooses as its
+ terminator. For example, if terminator stops at newline, the hunk
+ will consist of a line of data; if terminator stops at two
+ newlines, it can be used to read the head of an HTTP response.
+ Upon determining the boundary, the function returns the data (up to
+ the terminator) in malloc-allocated storage.
+
+ In case of read error, NULL is returned. In case of EOF and no
+ data read, NULL is returned and errno set to 0. In case of having
+ read some data, but encountering EOF before seeing the terminator,
+ the data that has been read is returned, but it will (obviously)
+ not contain the terminator.
+
+ The TERMINATOR function is called with three arguments: the
+ beginning of the data read so far, the beginning of the current
+ block of peeked-at data, and the length of the current block.
+ Depending on its needs, the function is free to choose whether to
+ analyze all data or just the newly arrived data. If TERMINATOR
+ returns NULL, it means that the terminator has not been seen.
+ Otherwise it should return a pointer to the charactre immediately
+ following the terminator.
+
+ The idea is to be able to read a line of input, or otherwise a hunk
+ of text, such as the head of an HTTP request, without crossing the
+ boundary, so that the next call to fd_read etc. reads the data
+ after the hunk. To achieve that, this function does the following:
+
+ 1. Peek at incoming data.
+
+ 2. Determine whether the peeked data, along with the previously
+ read data, includes the terminator.
+
+ 2a. If yes, read the data until the end of the terminator, and
+ exit.
+
+ 2b. If no, read the peeked data and goto 1.
+
+ The function is careful to assume as little as possible about the
+ implementation of peeking. For example, every peek is followed by
+ a read. If the read returns a different amount of data, the
+ process is retried until all data arrives safely.
+
+ SIZEHINT is the buffer size sufficient to hold all the data in the
+ typical case (it is used as the initial buffer size). MAXSIZE is
+ the maximum amount of memory this function is allowed to allocate,
+ or 0 if no upper limit is to be enforced.
+
+ This function should be used as a building block for other
+ functions -- see fd_read_line as a simple example. */
-/* Driver for fd_read_line and fd_read_head: keeps reading data until
- a terminator (as decided by FINDER) occurs in the data. The trick
- is that the data is first peeked at, and only then actually read.
- That way the data after the terminator is never read. */
-
-static char *
-fd_read_until (int fd, finder_t finder, int bufsize)
+char *
+fd_read_hunk (int fd, hunk_terminator_t terminator, long sizehint, long maxsize)
{
- int size = bufsize, tail = 0;
- char *buf = xmalloc (size);
+ long bufsize = sizehint;
+ char *hunk = xmalloc (bufsize);
+ int tail = 0; /* tail position in HUNK */
+
+ assert (!maxsize || maxsize >= bufsize);
while (1)
{
@@ -287,90 +415,105 @@ fd_read_until (int fd, finder_t finder, int bufsize)
/* First, peek at the available data. */
- pklen = fd_peek (fd, buf + tail, size - tail, -1);
+ pklen = fd_peek (fd, hunk + tail, bufsize - 1 - tail, -1);
if (pklen < 0)
- {
- xfree (buf);
- return NULL;
- }
- end = finder (buf, tail, pklen);
+ {
+ xfree (hunk);
+ return NULL;
+ }
+ end = terminator (hunk, hunk + tail, pklen);
if (end)
- {
- /* The data contains the terminator: we'll read the data up
- to the end of the terminator. */
- remain = end - (buf + tail);
- /* Note +1 for trailing \0. */
- if (size < tail + remain + 1)
- {
- size = tail + remain + 1;
- buf = xrealloc (buf, size);
- }
- }
+ {
+ /* The data contains the terminator: we'll drain the data up
+ to the end of the terminator. */
+ remain = end - (hunk + tail);
+ assert (remain >= 0);
+ if (remain == 0)
+ {
+ /* No more data needs to be read. */
+ hunk[tail] = '\0';
+ return hunk;
+ }
+ if (bufsize - 1 < tail + remain)
+ {
+ bufsize = tail + remain + 1;
+ hunk = xrealloc (hunk, bufsize);
+ }
+ }
else
- /* No terminator: simply read the data we know is (or should
- be) available. */
- remain = pklen;
+ /* No terminator: simply read the data we know is (or should
+ be) available. */
+ remain = pklen;
/* Now, read the data. Note that we make no assumptions about
- how much data we'll get. (Some TCP stacks are notorious for
- read returning less data than the previous MSG_PEEK.) */
+ how much data we'll get. (Some TCP stacks are notorious for
+ read returning less data than the previous MSG_PEEK.) */
- rdlen = fd_read (fd, buf + tail, remain, 0);
+ rdlen = fd_read (fd, hunk + tail, remain, 0);
if (rdlen < 0)
- {
- xfree_null (buf);
- return NULL;
- }
- if (rdlen == 0)
- {
- if (tail == 0)
- {
- /* EOF without anything having been read */
- xfree (buf);
- errno = 0;
- return NULL;
- }
- /* Return what we received so far. */
- if (size < tail + 1)
- {
- size = tail + 1; /* expand the buffer to receive the
- terminating \0 */
- buf = xrealloc (buf, size);
- }
- buf[tail] = '\0';
- return buf;
- }
+ {
+ xfree_null (hunk);
+ return NULL;
+ }
tail += rdlen;
+ hunk[tail] = '\0';
+
+ if (rdlen == 0)
+ {
+ if (tail == 0)
+ {
+ /* EOF without anything having been read */
+ xfree (hunk);
+ errno = 0;
+ return NULL;
+ }
+ else
+ /* EOF seen: return the data we've read. */
+ return hunk;
+ }
if (end && rdlen == remain)
- {
- /* The end was seen and the data read -- we got what we came
- for. */
- buf[tail] = '\0';
- return buf;
- }
+ /* The terminator was seen and the remaining data drained --
+ we got what we came for. */
+ return hunk;
/* Keep looping until all the data arrives. */
- if (tail == size)
- {
- size <<= 1;
- buf = xrealloc (buf, size);
- }
+ if (tail == bufsize - 1)
+ {
+ /* Double the buffer size, but refuse to allocate more than
+ MAXSIZE bytes. */
+ if (maxsize && bufsize >= maxsize)
+ {
+ xfree (hunk);
+ errno = ENOMEM;
+ return NULL;
+ }
+ bufsize <<= 1;
+ if (maxsize && bufsize > maxsize)
+ bufsize = maxsize;
+ hunk = xrealloc (hunk, bufsize);
+ }
}
}
static const char *
-line_terminator (const char *buf, int tail, int peeklen)
+line_terminator (const char *start, const char *peeked, int peeklen)
{
- const char *p = memchr (buf + tail, '\n', peeklen);
+ const char *p = memchr (peeked, '\n', peeklen);
if (p)
- /* p+1 because we want the line to include '\n' */
+ /* p+1 because the line must include '\n' */
return p + 1;
return NULL;
}
+/* The maximum size of the single line we agree to accept. This is
+ not meant to impose an arbitrary limit, but to protect the user
+ from Wget slurping up available memory upon encountering malicious
+ or buggy server output. Define it to 0 to remove the limit. */
+#define FD_READ_LINE_MAX 4096
+
/* Read one line from FD and return it. The line is allocated using
- malloc.
+ malloc, but is never larger than FD_READ_LINE_MAX.
If an error occurs, or if no data can be read, NULL is returned.
In the former case errno indicates the error condition, and in the
@@ -379,57 +522,25 @@ line_terminator (const char *buf, int tail, int peeklen)
char *
fd_read_line (int fd)
{
- return fd_read_until (fd, line_terminator, 128);
-}
-
-static const char *
-head_terminator (const char *buf, int tail, int peeklen)
-{
- const char *start, *end;
- if (tail < 4)
- start = buf;
- else
- start = buf + tail - 4;
- end = buf + tail + peeklen;
-
- for (; start < end - 1; start++)
- if (*start == '\n')
- {
- if (start < end - 2
- && start[1] == '\r'
- && start[2] == '\n')
- return start + 3;
- if (start[1] == '\n')
- return start + 2;
- }
- return NULL;
-}
-
-/* Read the request head from FD and return it. The chunk of data is
- allocated using malloc.
-
- If an error occurs, or if no data can be read, NULL is returned.
- In the former case errno indicates the error condition, and in the
- latter case, errno is NULL. */
-
-char *
-fd_read_head (int fd)
-{
- return fd_read_until (fd, head_terminator, 512);
+ return fd_read_hunk (fd, line_terminator, 128, FD_READ_LINE_MAX);
}
-/* Return a printed representation of the download rate, as
- appropriate for the speed. If PAD is non-zero, strings will be
- padded to the width of 7 characters (xxxx.xx). */
-char *
-retr_rate (long bytes, double msecs, int pad)
+/* Return a printed representation of the download rate, along with
+ the units appropriate for the download speed. */
+
+const char *
+retr_rate (wgint bytes, double secs)
{
static char res[20];
- static char *rate_names[] = {"B/s", "KB/s", "MB/s", "GB/s" };
- int units = 0;
+ static const char *rate_names[] = {"B/s", "KB/s", "MB/s", "GB/s" };
+ int units;
- double dlrate = calc_rate (bytes, msecs, &units);
- sprintf (res, pad ? "%7.2f %s" : "%.2f %s", dlrate, rate_names[units]);
+ double dlrate = calc_rate (bytes, secs, &units);
+ /* Use more digits for smaller numbers (regardless of unit used),
+ e.g. "1022", "247", "12.5", "2.38". */
+ sprintf (res, "%.*f %s",
+ dlrate >= 99.95 ? 0 : dlrate >= 9.995 ? 1 : 2,
+ dlrate, rate_names[units]);
return res;
}
@@ -441,21 +552,23 @@ retr_rate (long bytes, double msecs, int pad)
UNITS is zero for B/s, one for KB/s, two for MB/s, and three for
GB/s. */
+
double
-calc_rate (long bytes, double msecs, int *units)
+calc_rate (wgint bytes, double secs, int *units)
{
double dlrate;
- assert (msecs >= 0);
+ assert (secs >= 0);
assert (bytes >= 0);
- if (msecs == 0)
+ if (secs == 0)
/* If elapsed time is exactly zero, it means we're under the
- granularity of the timer. This often happens on systems that
- use time() for the timer. */
- msecs = wtimer_granularity ();
+ resolution of the timer. This can easily happen on systems
+ that use time() for the timer. Since the interval lies between
+ 0 and the timer's resolution, assume half the resolution. */
+ secs = ptimer_resolution () / 2.0;
- dlrate = (double)1000 * bytes / msecs;
+ dlrate = bytes / secs;
if (dlrate < 1024.0)
*units = 0;
else if (dlrate < 1024.0 * 1024.0)
@@ -469,31 +582,25 @@ calc_rate (long bytes, double msecs, int *units)
return dlrate;
}
-/* Maximum number of allowed redirections. 20 was chosen as a
- "reasonable" value, which is low enough to not cause havoc, yet
- high enough to guarantee that normal retrievals will not be hurt by
- the check. */
-
-#define MAX_REDIRECTIONS 20
-
-#define SUSPEND_POST_DATA do { \
- post_data_suspended = 1; \
- saved_post_data = opt.post_data; \
- saved_post_file_name = opt.post_file_name; \
- opt.post_data = NULL; \
- opt.post_file_name = NULL; \
+
+#define SUSPEND_POST_DATA do { \
+ post_data_suspended = true; \
+ saved_post_data = opt.post_data; \
+ saved_post_file_name = opt.post_file_name; \
+ opt.post_data = NULL; \
+ opt.post_file_name = NULL; \
} while (0)
-#define RESTORE_POST_DATA do { \
- if (post_data_suspended) \
- { \
- opt.post_data = saved_post_data; \
- opt.post_file_name = saved_post_file_name; \
- post_data_suspended = 0; \
- } \
+#define RESTORE_POST_DATA do { \
+ if (post_data_suspended) \
+ { \
+ opt.post_data = saved_post_data; \
+ opt.post_file_name = saved_post_file_name; \
+ post_data_suspended = false; \
+ } \
} while (0)
-static char *getproxy PARAMS ((struct url *));
+static char *getproxy (struct url *);
/* Retrieve the given URL. Decides which loop to call -- HTTP, FTP,
FTP, proxy, etc. */
@@ -502,19 +609,22 @@ static char *getproxy PARAMS ((struct url *));
multiple points. */
uerr_t
-retrieve_url (const char *origurl, char **file, char **newloc,
- const char *refurl, int *dt)
+retrieve_url (struct url * orig_parsed, const char *origurl, char **file,
+ char **newloc, const char *refurl, int *dt, bool recursive,
+ struct iri *iri)
{
uerr_t result;
char *url;
- int location_changed, dummy;
+ bool location_changed;
+ bool iri_fallbacked = 0;
+ int dummy;
char *mynewloc, *proxy;
- struct url *u, *proxy_url;
- int up_error_code; /* url parse error code */
+ struct url *u = orig_parsed, *proxy_url;
+ int up_error_code; /* url parse error code */
char *local_file;
int redirection_count = 0;
- int post_data_suspended = 0;
+ bool post_data_suspended = false;
char *saved_post_data = NULL;
char *saved_post_file_name = NULL;
@@ -530,18 +640,11 @@ retrieve_url (const char *origurl, char **file, char **newloc,
if (file)
*file = NULL;
- u = url_parse (url, &up_error_code);
- if (!u)
- {
- logprintf (LOG_NOTQUIET, "%s: %s.\n", url, url_error (up_error_code));
- xfree (url);
- return URLERROR;
- }
-
if (!refurl)
refurl = opt.referer;
redirected:
+ /* (also for IRI fallbacking) */
result = NOCONERROR;
mynewloc = NULL;
@@ -551,24 +654,30 @@ retrieve_url (const char *origurl, char **file, char **newloc,
proxy = getproxy (u);
if (proxy)
{
+ struct iri *pi = iri_new ();
+ set_uri_encoding (pi, opt.locale, true);
+ pi->utf8_encode = false;
+
/* Parse the proxy URL. */
- proxy_url = url_parse (proxy, &up_error_code);
+ proxy_url = url_parse (proxy, &up_error_code, NULL, true);
if (!proxy_url)
- {
- logprintf (LOG_NOTQUIET, _("Error parsing proxy URL %s: %s.\n"),
- proxy, url_error (up_error_code));
- xfree (url);
- RESTORE_POST_DATA;
- return PROXERR;
- }
+ {
+ char *error = url_error (proxy, up_error_code);
+ logprintf (LOG_NOTQUIET, _("Error parsing proxy URL %s: %s.\n"),
+ proxy, error);
+ xfree (url);
+ xfree (error);
+ RESTORE_POST_DATA;
+ return PROXERR;
+ }
if (proxy_url->scheme != SCHEME_HTTP && proxy_url->scheme != u->scheme)
- {
- logprintf (LOG_NOTQUIET, _("Error in proxy URL %s: Must be HTTP.\n"), proxy);
- url_free (proxy_url);
- xfree (url);
- RESTORE_POST_DATA;
- return PROXERR;
- }
+ {
+ logprintf (LOG_NOTQUIET, _("Error in proxy URL %s: Must be HTTP.\n"), proxy);
+ url_free (proxy_url);
+ xfree (url);
+ RESTORE_POST_DATA;
+ return PROXERR;
+ }
}
if (u->scheme == SCHEME_HTTP
@@ -577,28 +686,29 @@ retrieve_url (const char *origurl, char **file, char **newloc,
#endif
|| (proxy_url && proxy_url->scheme == SCHEME_HTTP))
{
- result = http_loop (u, &mynewloc, &local_file, refurl, dt, proxy_url);
+ result = http_loop (u, &mynewloc, &local_file, refurl, dt, proxy_url, iri);
}
else if (u->scheme == SCHEME_FTP)
{
- /* If this is a redirection, we must not allow recursive FTP
- retrieval, so we save recursion to oldrec, and restore it
- later. */
- int oldrec = opt.recursive;
+ /* If this is a redirection, temporarily turn off opt.ftp_glob
+ and opt.recursive, both being undesirable when following
+ redirects. */
+ bool oldrec = recursive, glob = opt.ftp_glob;
if (redirection_count)
- opt.recursive = 0;
- result = ftp_loop (u, dt, proxy_url);
- opt.recursive = oldrec;
+ oldrec = glob = false;
+
+ result = ftp_loop (u, dt, proxy_url, recursive, glob);
+ recursive = oldrec;
/* There is a possibility of having HTTP being redirected to
- FTP. In these cases we must decide whether the text is HTML
- according to the suffix. The HTML suffixes are `.html',
- `.htm' and a few others, case-insensitive. */
+ FTP. In these cases we must decide whether the text is HTML
+ according to the suffix. The HTML suffixes are `.html',
+ `.htm' and a few others, case-insensitive. */
if (redirection_count && local_file && u->scheme == SCHEME_FTP)
- {
- if (has_html_suffix_p (local_file))
- *dt |= TEXTHTML;
- }
+ {
+ if (has_html_suffix_p (local_file))
+ *dt |= TEXTHTML;
+ }
}
if (proxy_url)
@@ -616,28 +726,39 @@ retrieve_url (const char *origurl, char **file, char **newloc,
assert (mynewloc != NULL);
if (local_file)
- xfree (local_file);
+ xfree (local_file);
/* The HTTP specs only allow absolute URLs to appear in
- redirects, but a ton of boneheaded webservers and CGIs out
- there break the rules and use relative URLs, and popular
- browsers are lenient about this, so wget should be too. */
+ redirects, but a ton of boneheaded webservers and CGIs out
+ there break the rules and use relative URLs, and popular
+ browsers are lenient about this, so wget should be too. */
construced_newloc = uri_merge (url, mynewloc);
xfree (mynewloc);
mynewloc = construced_newloc;
+ /* Reset UTF-8 encoding state, keep the URI encoding and reset
+ the content encoding. */
+ iri->utf8_encode = opt.enable_iri;
+ set_content_encoding (iri, NULL);
+ xfree_null (iri->orig_url);
+
/* Now, see if this new location makes sense. */
- newloc_parsed = url_parse (mynewloc, &up_error_code);
+ newloc_parsed = url_parse (mynewloc, &up_error_code, iri, true);
if (!newloc_parsed)
- {
- logprintf (LOG_NOTQUIET, "%s: %s.\n", mynewloc,
- url_error (up_error_code));
- url_free (u);
- xfree (url);
- xfree (mynewloc);
- RESTORE_POST_DATA;
- return result;
- }
+ {
+ char *error = url_error (mynewloc, up_error_code);
+ logprintf (LOG_NOTQUIET, "%s: %s.\n", escnonprint_uri (mynewloc),
+ error);
+ if (orig_parsed != u)
+ {
+ url_free (u);
+ }
+ xfree (url);
+ xfree (mynewloc);
+ xfree (error);
+ RESTORE_POST_DATA;
+ return result;
+ }
/* Now mynewloc will become newloc_parsed->url, because if the
Location contained relative paths like .././something, we
@@ -646,44 +767,77 @@ retrieve_url (const char *origurl, char **file, char **newloc,
mynewloc = xstrdup (newloc_parsed->url);
/* Check for max. number of redirections. */
- if (++redirection_count > MAX_REDIRECTIONS)
- {
- logprintf (LOG_NOTQUIET, _("%d redirections exceeded.\n"),
- MAX_REDIRECTIONS);
- url_free (newloc_parsed);
- url_free (u);
- xfree (url);
- xfree (mynewloc);
- RESTORE_POST_DATA;
- return WRONGCODE;
- }
+ if (++redirection_count > opt.max_redirect)
+ {
+ logprintf (LOG_NOTQUIET, _("%d redirections exceeded.\n"),
+ opt.max_redirect);
+ url_free (newloc_parsed);
+ if (orig_parsed != u)
+ {
+ url_free (u);
+ }
+ xfree (url);
+ xfree (mynewloc);
+ RESTORE_POST_DATA;
+ return WRONGCODE;
+ }
xfree (url);
url = mynewloc;
- url_free (u);
+ if (orig_parsed != u)
+ {
+ url_free (u);
+ }
u = newloc_parsed;
/* If we're being redirected from POST, we don't want to POST
- again. Many requests answer POST with a redirection to an
- index page; that redirection is clearly a GET. We "suspend"
- POST data for the duration of the redirections, and restore
- it when we're done. */
+ again. Many requests answer POST with a redirection to an
+ index page; that redirection is clearly a GET. We "suspend"
+ POST data for the duration of the redirections, and restore
+ it when we're done. */
if (!post_data_suspended)
- SUSPEND_POST_DATA;
+ SUSPEND_POST_DATA;
goto redirected;
}
- if (local_file)
+ /* Try to not encode in UTF-8 if fetching failed */
+ if (!(*dt & RETROKF) && iri->utf8_encode)
+ {
+ iri->utf8_encode = false;
+ if (orig_parsed != u)
+ {
+ url_free (u);
+ }
+ u = url_parse (origurl, NULL, iri, true);
+ if (u)
+ {
+ DEBUGP (("[IRI fallbacking to non-utf8 for %s\n", quote (url)));
+ url = xstrdup (u->url);
+ iri_fallbacked = 1;
+ goto redirected;
+ }
+ else
+ DEBUGP (("[Couldn't fallback to non-utf8 for %s\n", quote (url)));
+ }
+
+ if (local_file && *dt & RETROKF)
{
+ register_download (u->url, local_file);
+ if (redirection_count && 0 != strcmp (origurl, u->url))
+ register_redirection (origurl, u->url);
+ if (*dt & TEXTHTML)
+ register_html (u->url, local_file);
if (*dt & RETROKF)
- {
- register_download (u->url, local_file);
- if (redirection_count && 0 != strcmp (origurl, u->url))
- register_redirection (origurl, u->url);
- if (*dt & TEXTHTML)
- register_html (u->url, local_file);
- }
+ {
+ register_download (u->url, local_file);
+ if (redirection_count && 0 != strcmp (origurl, u->url))
+ register_redirection (origurl, u->url);
+ if (*dt & TEXTHTML)
+ register_html (u->url, local_file);
+ if (*dt & TEXTCSS)
+ register_css (u->url, local_file);
+ }
}
if (file)
@@ -691,81 +845,156 @@ retrieve_url (const char *origurl, char **file, char **newloc,
else
xfree_null (local_file);
- url_free (u);
+ if (orig_parsed != u)
+ {
+ url_free (u);
+ }
- if (redirection_count)
+ if (redirection_count || iri_fallbacked)
{
if (newloc)
- *newloc = url;
+ *newloc = url;
else
- xfree (url);
+ xfree (url);
}
else
{
if (newloc)
- *newloc = NULL;
+ *newloc = NULL;
xfree (url);
}
- ++global_download_count;
RESTORE_POST_DATA;
return result;
}
-/* Find the URLs in the file and call retrieve_url() for each of
- them. If HTML is non-zero, treat the file as HTML, and construct
- the URLs accordingly.
+/* Find the URLs in the file and call retrieve_url() for each of them.
+ If HTML is true, treat the file as HTML, and construct the URLs
+ accordingly.
If opt.recursive is set, call retrieve_tree() for each file. */
uerr_t
-retrieve_from_file (const char *file, int html, int *count)
+retrieve_from_file (const char *file, bool html, int *count)
{
uerr_t status;
struct urlpos *url_list, *cur_url;
+ struct iri *iri = iri_new();
+
+ char *input_file = NULL;
+ const char *url = file;
- url_list = (html ? get_urls_html (file, NULL, NULL)
- : get_urls_file (file));
status = RETROK; /* Suppose everything is OK. */
*count = 0; /* Reset the URL count. */
+ /* sXXXav : Assume filename and links in the file are in the locale */
+ set_uri_encoding (iri, opt.locale, true);
+ set_content_encoding (iri, opt.locale);
+
+ if (url_has_scheme (url))
+ {
+ int dt,url_err;
+ uerr_t status;
+ struct url * url_parsed = url_parse(url, &url_err, iri, true);
+
+ if (!url_parsed)
+ {
+ char *error = url_error (url, url_err);
+ logprintf (LOG_NOTQUIET, "%s: %s.\n", url, error);
+ xfree (error);
+ return URLERROR;
+ }
+
+ if (!opt.base_href)
+ opt.base_href = xstrdup (url);
+
+ status = retrieve_url (url_parsed, url, &input_file, NULL, NULL, &dt,
+ false, iri);
+ if (status != RETROK)
+ return status;
+
+ if (dt & TEXTHTML)
+ html = true;
+
+ /* If we have a found a content encoding, use it.
+ * ( == is okay, because we're checking for identical object) */
+ if (iri->content_encoding != opt.locale)
+ set_uri_encoding (iri, iri->content_encoding, false);
+
+ /* Reset UTF-8 encode status */
+ iri->utf8_encode = opt.enable_iri;
+ xfree_null (iri->orig_url);
+ iri->orig_url = NULL;
+ }
+ else
+ input_file = (char *) file;
+
+ url_list = (html ? get_urls_html (input_file, NULL, NULL, iri)
+ : get_urls_file (input_file));
+
for (cur_url = url_list; cur_url; cur_url = cur_url->next, ++*count)
{
char *filename = NULL, *new_file = NULL;
int dt;
+ struct iri *tmpiri = iri_dup (iri);
+ struct url *parsed_url = NULL;
if (cur_url->ignore_when_downloading)
- continue;
+ continue;
if (opt.quota && total_downloaded_bytes > opt.quota)
- {
- status = QUOTEXC;
- break;
- }
+ {
+ status = QUOTEXC;
+ break;
+ }
+
+ /* Need to reparse the url, since it didn't have iri information. */
+ if (opt.enable_iri)
+ parsed_url = url_parse (cur_url->url->url, NULL, tmpiri, true);
+
if ((opt.recursive || opt.page_requisites)
- && cur_url->url->scheme != SCHEME_FTP)
- status = retrieve_tree (cur_url->url->url);
+ && (cur_url->url->scheme != SCHEME_FTP || getproxy (cur_url->url)))
+ {
+ int old_follow_ftp = opt.follow_ftp;
+
+ /* Turn opt.follow_ftp on in case of recursive FTP retrieval */
+ if (cur_url->url->scheme == SCHEME_FTP)
+ opt.follow_ftp = 1;
+
+ status = retrieve_tree (parsed_url ? parsed_url : cur_url->url,
+ tmpiri);
+
+ opt.follow_ftp = old_follow_ftp;
+ }
else
- status = retrieve_url (cur_url->url->url, &filename, &new_file, NULL, &dt);
+ status = retrieve_url (parsed_url ? parsed_url : cur_url->url,
+ cur_url->url->url, &filename,
+ &new_file, NULL, &dt, opt.recursive, tmpiri);
+
+ if (parsed_url)
+ url_free (parsed_url);
if (filename && opt.delete_after && file_exists_p (filename))
- {
- DEBUGP (("Removing file due to --delete-after in"
- " retrieve_from_file():\n"));
- logprintf (LOG_VERBOSE, _("Removing %s.\n"), filename);
- if (unlink (filename))
- logprintf (LOG_NOTQUIET, "unlink: %s\n", strerror (errno));
- dt &= ~RETROKF;
- }
+ {
+ DEBUGP (("\
+Removing file due to --delete-after in retrieve_from_file():\n"));
+ logprintf (LOG_VERBOSE, _("Removing %s.\n"), filename);
+ if (unlink (filename))
+ logprintf (LOG_NOTQUIET, "unlink: %s\n", strerror (errno));
+ dt &= ~RETROKF;
+ }
xfree_null (new_file);
xfree_null (filename);
+ iri_free (tmpiri);
}
/* Free the linked list of URL-s. */
free_urlpos (url_list);
+ iri_free (iri);
+
return status;
}
@@ -786,41 +1015,41 @@ printwhat (int n1, int n2)
void
sleep_between_retrievals (int count)
{
- static int first_retrieval = 1;
+ static bool first_retrieval = true;
if (first_retrieval)
{
/* Don't sleep before the very first retrieval. */
- first_retrieval = 0;
+ first_retrieval = false;
return;
}
if (opt.waitretry && count > 1)
{
/* If opt.waitretry is specified and this is a retry, wait for
- COUNT-1 number of seconds, or for opt.waitretry seconds. */
+ COUNT-1 number of seconds, or for opt.waitretry seconds. */
if (count <= opt.waitretry)
- xsleep (count - 1);
+ xsleep (count - 1);
else
- xsleep (opt.waitretry);
+ xsleep (opt.waitretry);
}
else if (opt.wait)
{
if (!opt.random_wait || count > 1)
- /* If random-wait is not specified, or if we are sleeping
- between retries of the same download, sleep the fixed
- interval. */
- xsleep (opt.wait);
+ /* If random-wait is not specified, or if we are sleeping
+ between retries of the same download, sleep the fixed
+ interval. */
+ xsleep (opt.wait);
else
- {
- /* Sleep a random amount of time averaging in opt.wait
- seconds. The sleeping amount ranges from 0 to
- opt.wait*2, inclusive. */
- double waitsecs = 2 * opt.wait * random_float ();
- DEBUGP (("sleep_between_retrievals: avg=%f,sleep=%f\n",
- opt.wait, waitsecs));
- xsleep (waitsecs);
- }
+ {
+ /* Sleep a random amount of time averaging in opt.wait
+ seconds. The sleeping amount ranges from 0.5*opt.wait to
+ 1.5*opt.wait. */
+ double waitsecs = (0.5 + random_float ()) * opt.wait;
+ DEBUGP (("sleep_between_retrievals: avg=%f,sleep=%f\n",
+ opt.wait, waitsecs));
+ xsleep (waitsecs);
+ }
}
}
@@ -832,7 +1061,7 @@ free_urlpos (struct urlpos *l)
{
struct urlpos *next = l->next;
if (l->url)
- url_free (l->url);
+ url_free (l->url);
xfree_null (l->local_name);
xfree (l);
l = next;
@@ -846,7 +1075,7 @@ rotate_backups(const char *fname)
int maxlen = strlen (fname) + 1 + numdigit (opt.backups) + 1;
char *from = (char *)alloca (maxlen);
char *to = (char *)alloca (maxlen);
- struct stat sb;
+ struct_stat sb;
int i;
if (stat (fname, &sb) == 0)
@@ -864,7 +1093,7 @@ rotate_backups(const char *fname)
rename(fname, to);
}
-static int no_proxy_match PARAMS ((const char *, const char **));
+static bool no_proxy_match (const char *, const char **);
/* Return the URL of the proxy appropriate for url U. */
@@ -877,7 +1106,7 @@ getproxy (struct url *u)
if (!opt.use_proxy)
return NULL;
- if (!no_proxy_match (u->host, (const char **)opt.no_proxy))
+ if (no_proxy_match (u->host, (const char **)opt.no_proxy))
return NULL;
switch (u->scheme)
@@ -904,7 +1133,7 @@ getproxy (struct url *u)
rewritten_url = rewrite_shorthand_url (proxy);
if (rewritten_url)
{
- strncpy (rewritten_storage, rewritten_url, sizeof(rewritten_storage));
+ strncpy (rewritten_storage, rewritten_url, sizeof (rewritten_storage));
rewritten_storage[sizeof (rewritten_storage) - 1] = '\0';
proxy = rewritten_storage;
}
@@ -912,12 +1141,37 @@ getproxy (struct url *u)
return proxy;
}
+/* Returns true if URL would be downloaded through a proxy. */
+
+bool
+url_uses_proxy (struct url * u)
+{
+ bool ret;
+ if (!u)
+ return false;
+ ret = getproxy (u) != NULL;
+ return ret;
+}
+
/* Should a host be accessed through proxy, concerning no_proxy? */
-int
+static bool
no_proxy_match (const char *host, const char **no_proxy)
{
if (!no_proxy)
- return 1;
+ return false;
+ else
+ return sufmatch (no_proxy, host);
+}
+
+/* Set the file parameter to point to the local file string. */
+void
+set_local_file (const char **file, const char *default_file)
+{
+ if (opt.output_document)
+ {
+ if (output_stream_regular)
+ *file = opt.output_document;
+ }
else
- return !sufmatch (no_proxy, host);
+ *file = default_file;
}