* wget - retrieve a file using HTTP or FTP
*
* Chip Rosenthal Covad Communications <chip@laserlink.net>
- *
* Licensed under GPLv2, see file LICENSE in this tarball for details.
+ *
+ * Copyright (C) 2010 Bradley M. Kuhn <bkuhn@ebb.org>
+ * Kuhn's copyrights are licensed GPLv2-or-later. File as a whole remains GPLv2.
*/
#include "libbb.h"
};
-/* Globals (can be accessed from signal handlers) */
+/* Globals */
struct globals {
off_t content_len; /* Content-length of the file */
off_t beg_range; /* Range at which continue begins */
off_t transferred; /* Number of bytes transferred so far */
const char *curfile; /* Name of current file being transferred */
bb_progress_t pmt;
+#endif
+#if ENABLE_FEATURE_WGET_TIMEOUT
+ unsigned timeout_seconds;
#endif
smallint chunked; /* chunked transfer encoding */
smallint got_clen; /* got content-length: from server */
struct BUG_G_too_big {
char BUG_G_too_big[sizeof(G) <= COMMON_BUFSIZE ? 1 : -1];
};
-#define INIT_G() do { } while (0)
+#define INIT_G() do { \
+ IF_FEATURE_WGET_TIMEOUT(G.timeout_seconds = 900;) \
+} while (0)
-#if ENABLE_FEATURE_WGET_STATUSBAR
+/* Must match option string! */
+enum {
+ WGET_OPT_CONTINUE = (1 << 0),
+ WGET_OPT_SPIDER = (1 << 1),
+ WGET_OPT_QUIET = (1 << 2),
+ WGET_OPT_OUTNAME = (1 << 3),
+ WGET_OPT_PREFIX = (1 << 4),
+ WGET_OPT_PROXY = (1 << 5),
+ WGET_OPT_USER_AGENT = (1 << 6),
+ WGET_OPT_NETWORK_READ_TIMEOUT = (1 << 7),
+ WGET_OPT_RETRIES = (1 << 8),
+ WGET_OPT_PASSIVE = (1 << 9),
+ WGET_OPT_HEADER = (1 << 10) * ENABLE_FEATURE_WGET_LONG_OPTIONS,
+ WGET_OPT_POST_DATA = (1 << 11) * ENABLE_FEATURE_WGET_LONG_OPTIONS,
+};
+enum {
+ PROGRESS_START = -1,
+ PROGRESS_END = 0,
+ PROGRESS_BUMP = 1,
+};
+#if ENABLE_FEATURE_WGET_STATUSBAR
static void progress_meter(int flag)
{
- /* We can be called from signal handler */
- int save_errno = errno;
+ if (option_mask32 & WGET_OPT_QUIET)
+ return;
- if (flag == -1) { /* first call to progress_meter */
+ if (flag == PROGRESS_START)
bb_progress_init(&G.pmt);
- }
bb_progress_update(&G.pmt, G.curfile, G.beg_range, G.transferred,
- G.chunked ? 0 : G.content_len + G.beg_range);
+ G.chunked ? 0 : G.beg_range + G.transferred + G.content_len);
- if (flag == 0) {
- /* last call to progress_meter */
- alarm(0);
- fputc('\n', stderr);
+ if (flag == PROGRESS_END) {
+ bb_putchar_stderr('\n');
G.transferred = 0;
- } else {
- if (flag == -1) { /* first call to progress_meter */
- signal_SA_RESTART_empty_mask(SIGALRM, progress_meter);
- }
- alarm(1);
}
-
- errno = save_errno;
}
-
-#else /* FEATURE_WGET_STATUSBAR */
-
+#else
static ALWAYS_INLINE void progress_meter(int flag UNUSED_PARAM) { }
-
#endif
return NULL;
/* convert the header name to lower case */
- for (s = buf; isalnum(*s) || *s == '-' || *s == '.'; ++s)
- *s = tolower(*s);
+ for (s = buf; isalnum(*s) || *s == '-' || *s == '.'; ++s) {
+ /* tolower for "A-Z", no-op for "0-9a-z-." */
+ *s = (*s | 0x20);
+ }
/* verify we are at the end of the header name */
if (*s != ':')
return sfp;
}
-/* Must match option string! */
-enum {
- WGET_OPT_CONTINUE = (1 << 0),
- WGET_OPT_SPIDER = (1 << 1),
- WGET_OPT_QUIET = (1 << 2),
- WGET_OPT_OUTNAME = (1 << 3),
- WGET_OPT_PREFIX = (1 << 4),
- WGET_OPT_PROXY = (1 << 5),
- WGET_OPT_USER_AGENT = (1 << 6),
- WGET_OPT_RETRIES = (1 << 7),
- WGET_OPT_NETWORK_READ_TIMEOUT = (1 << 8),
- WGET_OPT_PASSIVE = (1 << 9),
- WGET_OPT_HEADER = (1 << 10) * ENABLE_FEATURE_WGET_LONG_OPTIONS,
- WGET_OPT_POST_DATA = (1 << 11) * ENABLE_FEATURE_WGET_LONG_OPTIONS,
-};
-
static void NOINLINE retrieve_file_data(FILE *dfp, int output_fd)
{
char buf[512];
-
- if (!(option_mask32 & WGET_OPT_QUIET))
- progress_meter(-1);
+#if ENABLE_FEATURE_WGET_STATUSBAR || ENABLE_FEATURE_WGET_TIMEOUT
+# if ENABLE_FEATURE_WGET_TIMEOUT
+ unsigned second_cnt;
+# endif
+ struct pollfd polldata;
+
+ polldata.fd = fileno(dfp);
+ polldata.events = POLLIN | POLLPRI;
+ ndelay(polldata.fd);
+#endif
+ progress_meter(PROGRESS_START);
if (G.chunked)
goto get_clen;
rdsz = (unsigned)G.content_len;
}
}
+#if ENABLE_FEATURE_WGET_STATUSBAR || ENABLE_FEATURE_WGET_TIMEOUT
+# if ENABLE_FEATURE_WGET_TIMEOUT
+ second_cnt = G.timeout_seconds;
+# endif
+ while (1) {
+ if (safe_poll(&polldata, 1, 1000) != 0)
+ break; /* error, EOF, or data is available */
+# if ENABLE_FEATURE_WGET_TIMEOUT
+ if (second_cnt != 0 && --second_cnt == 0) {
+ progress_meter(PROGRESS_END);
+ bb_perror_msg_and_die("download timed out");
+ }
+# endif
+ /* Needed for "stalled" indicator */
+ progress_meter(PROGRESS_BUMP);
+ }
+#endif
n = safe_fread(buf, rdsz, dfp);
if (n <= 0) {
if (ferror(dfp)) {
xwrite(output_fd, buf, n);
#if ENABLE_FEATURE_WGET_STATUSBAR
G.transferred += n;
+ progress_meter(PROGRESS_BUMP);
#endif
if (G.got_clen)
G.content_len -= n;
G.got_clen = 1;
}
- if (!(option_mask32 & WGET_OPT_QUIET))
- progress_meter(0);
+ progress_meter(PROGRESS_END);
}
int wget_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
"directory-prefix\0" Required_argument "P"
"proxy\0" Required_argument "Y"
"user-agent\0" Required_argument "U"
+#if ENABLE_FEATURE_WGET_TIMEOUT
+ "timeout\0" Required_argument "T"
+#endif
/* Ignored: */
// "tries\0" Required_argument "t"
- // "timeout\0" Required_argument "T"
/* Ignored (we always use PASV): */
"passive-ftp\0" No_argument "\xff"
"header\0" Required_argument "\xfe"
applet_long_options = wget_longopts;
#endif
/* server.allocated = target.allocated = NULL; */
- opt_complementary = "-1" IF_FEATURE_WGET_LONG_OPTIONS(":\xfe::");
- opt = getopt32(argv, "csqO:P:Y:U:" /*ignored:*/ "t:T:",
+ opt_complementary = "-1" IF_FEATURE_WGET_TIMEOUT(":T+") IF_FEATURE_WGET_LONG_OPTIONS(":\xfe::");
+ opt = getopt32(argv, "csqO:P:Y:U:T:" /*ignored:*/ "t:",
&fname_out, &dir_prefix,
&proxy_flag, &user_agent,
- NULL, /* -t RETRIES */
- NULL /* -T NETWORK_READ_TIMEOUT */
+ IF_FEATURE_WGET_TIMEOUT(&G.timeout_seconds) IF_NOT_FEATURE_WGET_TIMEOUT(NULL),
+ NULL /* -t RETRIES */
IF_FEATURE_WGET_LONG_OPTIONS(, &headers_llist)
IF_FEATURE_WGET_LONG_OPTIONS(, &post_data)
);
if (use_proxy) {
proxy = getenv(target.is_ftp ? "ftp_proxy" : "http_proxy");
if (proxy && proxy[0]) {
+ server.user = NULL;
parse_url(proxy, &server);
} else {
use_proxy = 0;