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wget: implement -T SEC; rework progress meter to not use signals (it was unsafe)
function old new delta retrieve_file_data 364 450 +86 bb_progress_update 615 682 +67 packed_usage 27406 27422 +16 wget_main 2440 2453 +13 static.wget_longopts 145 155 +10 progress_meter 199 159 -40 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 5/1 up/down: 192/-40) Total: 152 bytes Signed-off-by: Bradley M. Kuhn <bkuhn@ebb.org> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Bradley M. Kuhn
Denys Vlasenko
parent
33bbb27e45
commit
c97131c2af
@ -803,6 +803,7 @@ CONFIG_WGET=y
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CONFIG_FEATURE_WGET_STATUSBAR=y
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CONFIG_FEATURE_WGET_AUTHENTICATION=y
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CONFIG_FEATURE_WGET_LONG_OPTIONS=y
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CONFIG_FEATURE_WGET_TIMEOUT=y
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CONFIG_ZCIP=y
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#
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@ -4779,10 +4779,12 @@ INSERT
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IF_FEATURE_WGET_LONG_OPTIONS( \
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"[-c|--continue] [-s|--spider] [-q|--quiet] [-O|--output-document FILE]\n" \
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" [--header 'header: value'] [-Y|--proxy on/off] [-P DIR]\n" \
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" [--no-check-certificate] [-U|--user-agent AGENT] URL" \
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" [--no-check-certificate] [-U|--user-agent AGENT]" \
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IF_FEATURE_WGET_TIMEOUT("[-T SEC] ") " URL" \
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) \
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IF_NOT_FEATURE_WGET_LONG_OPTIONS( \
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"[-csq] [-O FILE] [-Y on/off] [-P DIR] [-U AGENT] URL" \
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"[-csq] [-O FILE] [-Y on/off] [-P DIR] [-U AGENT]" \
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IF_FEATURE_WGET_TIMEOUT("[-T SEC] ") " URL" \
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)
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#define wget_full_usage "\n\n" \
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"Retrieve files via HTTP or FTP\n" \
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@ -4790,7 +4792,10 @@ INSERT
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"\n -s Spider mode - only check file existence" \
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"\n -c Continue retrieval of aborted transfer" \
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"\n -q Quiet" \
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"\n -P Set directory prefix to DIR" \
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"\n -P DIR Save to DIR (default .)" \
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IF_FEATURE_WGET_TIMEOUT( \
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"\n -T SEC Network read timeout is SEC seconds" \
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) \
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"\n -O FILE Save to FILE ('-' for stdout)" \
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"\n -U STR Use STR for User-Agent header" \
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"\n -Y Use proxy ('on' or 'off')" \
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@ -66,16 +66,29 @@ void FAST_FUNC bb_progress_update(bb_progress_t *p,
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off_t transferred,
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off_t totalsize)
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{
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off_t abbrevsize;
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uoff_t beg_and_transferred;
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unsigned since_last_update, elapsed;
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unsigned ratio;
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int barlength, i;
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/* totalsize == 0 if it is unknown */
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elapsed = monotonic_sec();
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since_last_update = elapsed - p->lastupdate_sec;
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/* Do not update on every call
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* (might be: on every network read!) */
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if (since_last_update == 0 && !totalsize)
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return;
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beg_and_transferred = beg_range + transferred;
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ratio = 100;
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if (totalsize) {
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if (beg_and_transferred < totalsize) {
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/* Do not update on every call
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* (might be: on every network read!) */
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if (since_last_update == 0)
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return;
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/* long long helps to have it working even if !LFS */
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ratio = (unsigned) (100ULL * (transferred+beg_range) / totalsize);
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if (ratio > 100) ratio = 100;
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ratio = 100ULL * beg_and_transferred / (uoff_t)totalsize;
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}
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#if ENABLE_UNICODE_SUPPORT
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@ -95,11 +108,11 @@ void FAST_FUNC bb_progress_update(bb_progress_t *p,
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/* back to multibyte; cant overflow */
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wcstombs(buf, wbuf21, INT_MAX);
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len = (len > 20) ? 0 : 20 - len;
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fprintf(stderr, "\r%s%*s%4d%% ", buf, len, "", ratio);
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fprintf(stderr, "\r%s%*s%4u%% ", buf, len, "", ratio);
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free(buf);
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}
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#else
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fprintf(stderr, "\r%-20.20s%4d%% ", curfile, ratio);
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fprintf(stderr, "\r%-20.20s%4u%% ", curfile, ratio);
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#endif
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barlength = get_tty2_width() - 49;
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@ -114,16 +127,14 @@ void FAST_FUNC bb_progress_update(bb_progress_t *p,
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}
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}
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i = 0;
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abbrevsize = transferred + beg_range;
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while (abbrevsize >= 100000) {
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while (beg_and_transferred >= 100000) {
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i++;
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abbrevsize >>= 10;
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beg_and_transferred >>= 10;
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}
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/* see http://en.wikipedia.org/wiki/Tera */
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fprintf(stderr, "%6d%c ", (int)abbrevsize, " kMGTPEZY"[i]);
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fprintf(stderr, "%6u%c ", (unsigned)beg_and_transferred, " kMGTPEZY"[i]);
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#define beg_and_transferred dont_use_beg_and_transferred_below
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elapsed = monotonic_sec();
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since_last_update = elapsed - p->lastupdate_sec;
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if (transferred > p->lastsize) {
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p->lastupdate_sec = elapsed;
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p->lastsize = transferred;
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@ -1012,6 +1012,18 @@ config FEATURE_WGET_LONG_OPTIONS
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help
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Support long options for the wget applet.
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config FEATURE_WGET_TIMEOUT
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bool "Enable timeout options"
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default n
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depends on WGET
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help
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Supports network read timeout for wget, so that wget will give
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up and timeout when reading network data, through the -T command
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line option. Currently only network data read timeout is
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supported (i.e., timeout is not applied to the DNS nor TCP
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connection initialization). When FEATURE_WGET_LONG_OPTIONS is
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also enabled, the --timeout option will work in addition to -T.
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config ZCIP
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bool "zcip"
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default y
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@ -3,8 +3,10 @@
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* wget - retrieve a file using HTTP or FTP
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*
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* Chip Rosenthal Covad Communications <chip@laserlink.net>
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*
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* Licensed under GPLv2, see file LICENSE in this tarball for details.
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*
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* Copyright (C) 2010 Bradley M. Kuhn <bkuhn@ebb.org>
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* Kuhn's copyrights are licensed GPLv2-or-later. File as a whole remains GPLv2.
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*/
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#include "libbb.h"
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@ -19,7 +21,7 @@ struct host_info {
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};
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/* Globals (can be accessed from signal handlers) */
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/* Globals */
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struct globals {
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off_t content_len; /* Content-length of the file */
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off_t beg_range; /* Range at which continue begins */
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@ -27,6 +29,9 @@ struct globals {
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off_t transferred; /* Number of bytes transferred so far */
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const char *curfile; /* Name of current file being transferred */
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bb_progress_t pmt;
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#endif
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#if ENABLE_FEATURE_WGET_TIMEOUT
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unsigned timeout_seconds;
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#endif
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smallint chunked; /* chunked transfer encoding */
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smallint got_clen; /* got content-length: from server */
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@ -35,42 +40,51 @@ struct globals {
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struct BUG_G_too_big {
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char BUG_G_too_big[sizeof(G) <= COMMON_BUFSIZE ? 1 : -1];
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};
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#define INIT_G() do { } while (0)
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#define INIT_G() do { \
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IF_FEATURE_WGET_TIMEOUT(G.timeout_seconds = 900;) \
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} while (0)
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/* Must match option string! */
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enum {
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WGET_OPT_CONTINUE = (1 << 0),
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WGET_OPT_SPIDER = (1 << 1),
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WGET_OPT_QUIET = (1 << 2),
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WGET_OPT_OUTNAME = (1 << 3),
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WGET_OPT_PREFIX = (1 << 4),
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WGET_OPT_PROXY = (1 << 5),
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WGET_OPT_USER_AGENT = (1 << 6),
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WGET_OPT_NETWORK_READ_TIMEOUT = (1 << 7),
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WGET_OPT_RETRIES = (1 << 8),
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WGET_OPT_PASSIVE = (1 << 9),
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WGET_OPT_HEADER = (1 << 10) * ENABLE_FEATURE_WGET_LONG_OPTIONS,
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WGET_OPT_POST_DATA = (1 << 11) * ENABLE_FEATURE_WGET_LONG_OPTIONS,
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};
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enum {
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PROGRESS_START = -1,
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PROGRESS_END = 0,
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PROGRESS_BUMP = 1,
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};
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#if ENABLE_FEATURE_WGET_STATUSBAR
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static void progress_meter(int flag)
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{
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/* We can be called from signal handler */
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int save_errno = errno;
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if (option_mask32 & WGET_OPT_QUIET)
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return;
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if (flag == -1) { /* first call to progress_meter */
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if (flag == PROGRESS_START)
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bb_progress_init(&G.pmt);
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}
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bb_progress_update(&G.pmt, G.curfile, G.beg_range, G.transferred,
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G.chunked ? 0 : G.beg_range + G.transferred + G.content_len);
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if (flag == 0) {
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/* last call to progress_meter */
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alarm(0);
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if (flag == PROGRESS_END) {
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bb_putchar_stderr('\n');
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G.transferred = 0;
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} else {
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if (flag == -1) { /* first call to progress_meter */
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signal_SA_RESTART_empty_mask(SIGALRM, progress_meter);
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}
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alarm(1);
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}
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errno = save_errno;
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}
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#else /* FEATURE_WGET_STATUSBAR */
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#else
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static ALWAYS_INLINE void progress_meter(int flag UNUSED_PARAM) { }
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#endif
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@ -430,28 +444,20 @@ static FILE* prepare_ftp_session(FILE **dfpp, struct host_info *target, len_and_
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return sfp;
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}
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/* Must match option string! */
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enum {
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WGET_OPT_CONTINUE = (1 << 0),
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WGET_OPT_SPIDER = (1 << 1),
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WGET_OPT_QUIET = (1 << 2),
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WGET_OPT_OUTNAME = (1 << 3),
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WGET_OPT_PREFIX = (1 << 4),
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WGET_OPT_PROXY = (1 << 5),
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WGET_OPT_USER_AGENT = (1 << 6),
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WGET_OPT_RETRIES = (1 << 7),
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WGET_OPT_NETWORK_READ_TIMEOUT = (1 << 8),
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WGET_OPT_PASSIVE = (1 << 9),
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WGET_OPT_HEADER = (1 << 10) * ENABLE_FEATURE_WGET_LONG_OPTIONS,
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WGET_OPT_POST_DATA = (1 << 11) * ENABLE_FEATURE_WGET_LONG_OPTIONS,
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};
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static void NOINLINE retrieve_file_data(FILE *dfp, int output_fd)
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{
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char buf[512];
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#if ENABLE_FEATURE_WGET_STATUSBAR || ENABLE_FEATURE_WGET_TIMEOUT
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# if ENABLE_FEATURE_WGET_TIMEOUT
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unsigned second_cnt;
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# endif
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struct pollfd polldata;
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if (!(option_mask32 & WGET_OPT_QUIET))
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progress_meter(-1);
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polldata.fd = fileno(dfp);
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polldata.events = POLLIN | POLLPRI;
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ndelay(polldata.fd);
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#endif
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progress_meter(PROGRESS_START);
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if (G.chunked)
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goto get_clen;
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@ -470,6 +476,23 @@ static void NOINLINE retrieve_file_data(FILE *dfp, int output_fd)
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rdsz = (unsigned)G.content_len;
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}
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}
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#if ENABLE_FEATURE_WGET_STATUSBAR || ENABLE_FEATURE_WGET_TIMEOUT
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# if ENABLE_FEATURE_WGET_TIMEOUT
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second_cnt = G.timeout_seconds;
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# endif
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while (1) {
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if (safe_poll(&polldata, 1, 1000) != 0)
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break; /* error, EOF, or data is available */
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# if ENABLE_FEATURE_WGET_TIMEOUT
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if (second_cnt != 0 && --second_cnt == 0) {
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progress_meter(PROGRESS_END);
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bb_perror_msg_and_die("download timed out");
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}
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# endif
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/* Needed for "stalled" indicator */
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progress_meter(PROGRESS_BUMP);
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}
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#endif
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n = safe_fread(buf, rdsz, dfp);
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if (n <= 0) {
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if (ferror(dfp)) {
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@ -481,6 +504,7 @@ static void NOINLINE retrieve_file_data(FILE *dfp, int output_fd)
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xwrite(output_fd, buf, n);
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#if ENABLE_FEATURE_WGET_STATUSBAR
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G.transferred += n;
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progress_meter(PROGRESS_BUMP);
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#endif
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if (G.got_clen)
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G.content_len -= n;
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@ -499,8 +523,7 @@ static void NOINLINE retrieve_file_data(FILE *dfp, int output_fd)
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G.got_clen = 1;
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}
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if (!(option_mask32 & WGET_OPT_QUIET))
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progress_meter(0);
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progress_meter(PROGRESS_END);
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}
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int wget_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
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@ -541,9 +564,11 @@ int wget_main(int argc UNUSED_PARAM, char **argv)
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"directory-prefix\0" Required_argument "P"
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"proxy\0" Required_argument "Y"
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"user-agent\0" Required_argument "U"
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#if ENABLE_FEATURE_WGET_TIMEOUT
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"timeout\0" Required_argument "T"
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#endif
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/* Ignored: */
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// "tries\0" Required_argument "t"
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// "timeout\0" Required_argument "T"
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/* Ignored (we always use PASV): */
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"passive-ftp\0" No_argument "\xff"
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"header\0" Required_argument "\xfe"
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@ -559,12 +584,12 @@ int wget_main(int argc UNUSED_PARAM, char **argv)
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applet_long_options = wget_longopts;
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#endif
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/* server.allocated = target.allocated = NULL; */
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opt_complementary = "-1" IF_FEATURE_WGET_LONG_OPTIONS(":\xfe::");
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opt = getopt32(argv, "csqO:P:Y:U:" /*ignored:*/ "t:T:",
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opt_complementary = "-1" IF_FEATURE_WGET_TIMEOUT(":T+") IF_FEATURE_WGET_LONG_OPTIONS(":\xfe::");
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opt = getopt32(argv, "csqO:P:Y:U:T:" /*ignored:*/ "t:",
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&fname_out, &dir_prefix,
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&proxy_flag, &user_agent,
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NULL, /* -t RETRIES */
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NULL /* -T NETWORK_READ_TIMEOUT */
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IF_FEATURE_WGET_TIMEOUT(&G.timeout_seconds) IF_NOT_FEATURE_WGET_TIMEOUT(NULL),
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NULL /* -t RETRIES */
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IF_FEATURE_WGET_LONG_OPTIONS(, &headers_llist)
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IF_FEATURE_WGET_LONG_OPTIONS(, &post_data)
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);
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