* 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 */
-};
+} FIX_ALIASING;
#define G (*(struct globals*)&bb_common_bufsiz1)
struct BUG_G_too_big {
char BUG_G_too_big[sizeof(G) <= COMMON_BUFSIZE ? 1 : -1];
};
-#define content_len (G.content_len )
-#define beg_range (G.beg_range )
-#define transferred (G.transferred )
-#define curfile (G.curfile )
-#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, curfile, beg_range, transferred,
- G.chunked ? 0 : content_len + beg_range);
+ bb_progress_update(&G.pmt, G.curfile, G.beg_range, G.transferred,
+ G.chunked ? 0 : G.beg_range + G.transferred + G.content_len);
- if (flag == 0) {
- /* last call to progress_meter */
- alarm(0);
- fputc('\n', stderr);
- transferred = 0;
- } else {
- if (flag == -1) { /* first call to progress_meter */
- signal_SA_RESTART_empty_mask(SIGALRM, progress_meter);
- }
- alarm(1);
+ if (flag == PROGRESS_END) {
+ bb_putchar_stderr('\n');
+ G.transferred = 0;
}
-
- 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 != ':')
* Querying file size
*/
if (ftpcmd("SIZE ", target->path, sfp, buf) == 213) {
- content_len = BB_STRTOOFF(buf+4, NULL, 10);
- if (errno || content_len < 0) {
+ G.content_len = BB_STRTOOFF(buf+4, NULL, 10);
+ if (G.content_len < 0 || errno) {
bb_error_msg_and_die("SIZE value is garbage");
}
G.got_clen = 1;
*dfpp = open_socket(lsa);
- if (beg_range) {
- sprintf(buf, "REST %"OFF_FMT"d", beg_range);
+ if (G.beg_range) {
+ sprintf(buf, "REST %"OFF_FMT"u", G.beg_range);
if (ftpcmd(buf, NULL, sfp, buf) == 350)
- content_len -= beg_range;
+ G.content_len -= G.beg_range;
}
if (ftpcmd("RETR ", target->path, sfp, buf) > 150)
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;
/* Loops only if chunked */
while (1) {
- while (content_len > 0 || !G.got_clen) {
+ while (1) {
int n;
- unsigned rdsz = sizeof(buf);
-
- if (content_len < sizeof(buf) && (G.chunked || G.got_clen))
- rdsz = (unsigned)content_len;
+ unsigned rdsz;
+
+ rdsz = sizeof(buf);
+ if (G.got_clen) {
+ if (G.content_len < (off_t)sizeof(buf)) {
+ if ((int)G.content_len <= 0)
+ break;
+ 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
- transferred += n;
+ G.transferred += n;
+ progress_meter(PROGRESS_BUMP);
#endif
if (G.got_clen)
- content_len -= n;
+ G.content_len -= n;
}
if (!G.chunked)
safe_fgets(buf, sizeof(buf), dfp); /* This is a newline */
get_clen:
safe_fgets(buf, sizeof(buf), dfp);
- content_len = STRTOOFF(buf, NULL, 16);
+ G.content_len = STRTOOFF(buf, NULL, 16);
/* FIXME: error check? */
- if (content_len == 0)
+ if (G.content_len == 0)
break; /* all done! */
+ 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"
"post-data\0" Required_argument "\xfd"
+ /* Ignored (we don't do ssl) */
+ "no-check-certificate\0" No_argument "\xfc"
;
#endif
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;
}
}
#if ENABLE_FEATURE_WGET_STATUSBAR
- curfile = bb_get_last_path_component_nostrip(fname_out);
+ G.curfile = bb_get_last_path_component_nostrip(fname_out);
#endif
/* Impossible?
if ((opt & WGET_OPT_CONTINUE) && !fname_out)
- bb_error_msg_and_die("cannot specify continue (-c) without a filename (-O)");
+ bb_error_msg_and_die("can't specify continue (-c) without a filename (-O)");
*/
/* Determine where to start transfer */
if (opt & WGET_OPT_CONTINUE) {
output_fd = open(fname_out, O_WRONLY);
if (output_fd >= 0) {
- beg_range = xlseek(output_fd, 0, SEEK_END);
+ G.beg_range = xlseek(output_fd, 0, SEEK_END);
}
/* File doesn't exist. We do not create file here yet.
* We are not sure it exists on remove side */
}
#endif
- if (beg_range)
- fprintf(sfp, "Range: bytes=%"OFF_FMT"d-\r\n", beg_range);
+ if (G.beg_range)
+ fprintf(sfp, "Range: bytes=%"OFF_FMT"u-\r\n", G.beg_range);
#if ENABLE_FEATURE_WGET_LONG_OPTIONS
if (extra_headers)
fputs(extra_headers, sfp);
case 303:
break;
case 206:
- if (beg_range)
+ if (G.beg_range)
break;
/* fall through */
default:
}
key = index_in_strings(keywords, buf) + 1;
if (key == KEY_content_length) {
- content_len = BB_STRTOOFF(str, NULL, 10);
- if (errno || content_len < 0) {
+ G.content_len = BB_STRTOOFF(str, NULL, 10);
+ if (G.content_len < 0 || errno) {
bb_error_msg_and_die("content-length %s is garbage", sanitize_string(str));
}
G.got_clen = 1;
}
retrieve_file_data(dfp, output_fd);
+ xclose(output_fd);
if (dfp != sfp) {
/* It's ftp. Close it properly */
fclose(dfp);
if (ftpcmd(NULL, NULL, sfp, buf) != 226)
bb_error_msg_and_die("ftp error: %s", sanitize_string(buf+4));
- ftpcmd("QUIT", NULL, sfp, buf);
+ /* ftpcmd("QUIT", NULL, sfp, buf); - why bother? */
}
return EXIT_SUCCESS;
projects / oweals / busybox.git / blobdiff