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wget: add (configurable) large file support. Run tested.

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This commit is contained in:
Denis Vlasenko 2006-09-26 09:22:12 +00:00
parent 3312c989e6
commit a552eeb498
3 changed files with 99 additions and 53 deletions
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2
include/libbb.h
View File

@ -248,7 +248,9 @@ extern char *safe_strncpy(char *dst, const char *src, size_t size);
extern int safe_strtoi(char *arg, int* value);
extern int safe_strtod(char *arg, double* value);
extern int safe_strtol(char *arg, long* value);
extern int safe_strtoll(char *arg, long long* value);
extern int safe_strtoul(char *arg, unsigned long* value);
extern int safe_strtoull(char *arg, unsigned long long* value);
struct suffix_mult {
const char *suffix;

34
libbb/safe_strtol.c
View File

@ -74,3 +74,37 @@ int safe_strtoul(char *arg, unsigned long* value)
}
#endif
#ifdef L_safe_strtoll
int safe_strtoll(char *arg, long long* value)
{
char *endptr;
int errno_save = errno;
assert(arg!=NULL);
errno = 0;
*value = strtoll(arg, &endptr, 0);
if (errno != 0 || *endptr!='\0' || endptr==arg) {
return 1;
}
errno = errno_save;
return 0;
}
#endif
#ifdef L_safe_strtoull
int safe_strtoull(char *arg, unsigned long long* value)
{
char *endptr;
int errno_save = errno;
assert(arg!=NULL);
errno = 0;
*value = strtoull(arg, &endptr, 0);
if (errno != 0 || *endptr!='\0' || endptr==arg) {
return 1;
}
errno = errno_save;
return 0;
}
#endif

80
networking/wget.c
View File

@ -6,8 +6,28 @@
*
*/
/* We want libc to give us xxx64 functions also */
/* http://www.unix.org/version2/whatsnew/lfs20mar.html */
#define _LARGEFILE64_SOURCE 1
#include "busybox.h"
#include <getopt.h>
#include <getopt.h> /* for struct option */
#ifdef CONFIG_LFS
# define FILEOFF_TYPE off64_t
# define FILEOFF_FMT "%lld"
# define LSEEK lseek64
# define STRTOOFF strtoll
# define SAFE_STRTOOFF safe_strtoll
/* stat64 etc as needed... */
#else
# define FILEOFF_TYPE off_t
# define FILEOFF_FMT "%ld"
# define LSEEK lseek
# define STRTOOFF strtol
# define SAFE_STRTOOFF safe_strtol
/* Do we need to undefine O_LARGEFILE? */
#endif
struct host_info {
char *host;
@ -23,13 +43,13 @@ static char *gethdr(char *buf, size_t bufsiz, FILE *fp, int *istrunc);
static int ftpcmd(char *s1, char *s2, FILE *fp, char *buf);
/* Globals (can be accessed from signal handlers */
static off_t filesize; /* content-length of the file */
static FILEOFF_TYPE filesize; /* content-length of the file */
static int chunked; /* chunked transfer encoding */
#ifdef CONFIG_FEATURE_WGET_STATUSBAR
static void progressmeter(int flag);
static char *curfile; /* Name of current file being transferred. */
static struct timeval start; /* Time a transfer started. */
static off_t transferred; /* Number of bytes transferred so far. */
static FILEOFF_TYPE transferred; /* Number of bytes transferred so far. */
/* For progressmeter() -- number of seconds before xfer considered "stalled" */
enum {
STALLTIME = 5
@ -91,7 +111,7 @@ static char *base64enc(unsigned char *p, char *buf, int len)
static const struct option wget_long_options[] = {
{ "continue", 0, NULL, 'c' },
{ "quiet", 0, NULL, 'q' },
{ "passive-ftp", 0, NULL, 139 },
{ "passive-ftp", 0, NULL, 139 }, /* FIXME: what is this - 139?? */
{ "output-document", 1, NULL, 'O' },
{ "header", 1, NULL, 131 },
{ "directory-prefix",1, NULL, 'P' },
@ -119,11 +139,9 @@ int wget_main(int argc, char **argv)
FILE *sfp = NULL; /* socket to web/ftp server */
FILE *dfp = NULL; /* socket to ftp server (data) */
char *fname_out = NULL; /* where to direct output (-O) */
int do_continue = 0; /* continue a prev transfer (-c) */
off64_t beg_range = 0; /* range at which continue begins */
FILEOFF_TYPE beg_range = 0; /* range at which continue begins */
int got_clen = 0; /* got content-length: from server */
int output_fd = -1;
int quiet_flag = FALSE; /* Be verry, verry quiet... */
int use_proxy = 1; /* Use proxies if env vars are set */
char *proxy_flag = "on"; /* Use proxies if env vars are set */
char *user_agent = "Wget"; /* Content of the "User-Agent" header field */
@ -138,12 +156,6 @@ int wget_main(int argc, char **argv)
opt = bb_getopt_ulflags(argc, argv, "cq\213O:\203:P:Y:U:",
&fname_out, &headers_llist,
&dir_prefix, &proxy_flag, &user_agent);
if (opt & WGET_OPT_CONTINUE) {
++do_continue;
}
if (opt & WGET_OPT_QUIET) {
quiet_flag = TRUE;
}
if (strcmp(proxy_flag, "off") == 0) {
/* Use the proxy if necessary. */
use_proxy = 0;
@ -205,7 +217,7 @@ int wget_main(int argc, char **argv)
curfile = bb_get_last_path_component(fname_out);
#endif
}
if (do_continue && !fname_out)
if ((opt & WGET_OPT_CONTINUE) && !fname_out)
bb_error_msg_and_die("cannot specify continue (-c) without a filename (-O)");
/*
@ -213,13 +225,13 @@ int wget_main(int argc, char **argv)
*/
if (!strcmp(fname_out, "-")) {
output_fd = 1;
quiet_flag = TRUE;
do_continue = 0;
} else if (do_continue) {
opt |= WGET_OPT_QUIET;
opt &= ~WGET_OPT_CONTINUE;
} else if (opt & WGET_OPT_CONTINUE) {
output_fd = open(fname_out, O_WRONLY|O_LARGEFILE);
if (output_fd >= 0) {
beg_range = lseek64(output_fd, 0, SEEK_END);
if (beg_range == (off64_t)-1)
beg_range = LSEEK(output_fd, 0, SEEK_END);
if (beg_range == (FILEOFF_TYPE)-1)
bb_perror_msg_and_die("lseek64");
}
/* File doesn't exist. We do not create file here yet.
@ -231,7 +243,7 @@ int wget_main(int argc, char **argv)
* and we want to connect to only one IP... */
bb_lookup_host(&s_in, server.host);
s_in.sin_port = server.port;
if (quiet_flag == FALSE) {
if (!(opt & WGET_OPT_QUIET)) {
printf("Connecting to %s[%s]:%d\n",
server.host, inet_ntoa(s_in.sin_addr), ntohs(server.port));
}
@ -283,7 +295,7 @@ int wget_main(int argc, char **argv)
#endif
if (beg_range)
fprintf(sfp, "Range: bytes=%lld-\r\n", (long long)beg_range);
fprintf(sfp, "Range: bytes="FILEOFF_FMT"-\r\n", beg_range);
if(extra_headers_left < sizeof(extra_headers))
fputs(extra_headers,sfp);
fprintf(sfp,"Connection: close\r\n\r\n");
@ -325,11 +337,9 @@ read_response:
*/
while ((s = gethdr(buf, sizeof(buf), sfp, &n)) != NULL) {
if (strcasecmp(buf, "content-length") == 0) {
unsigned long value;
if (safe_strtoul(s, &value)) {
if (SAFE_STRTOOFF(s, &filesize) || filesize < 0) {
bb_error_msg_and_die("content-length %s is garbage", s);
}
filesize = value;
got_clen = 1;
continue;
}
@ -395,11 +405,9 @@ read_response:
* Querying file size
*/
if (ftpcmd("SIZE ", target.path, sfp, buf) == 213) {
unsigned long value;
if (safe_strtoul(buf+4, &value)) {
if (SAFE_STRTOOFF(buf+4, &filesize) || filesize < 0) {
bb_error_msg_and_die("SIZE value is garbage");
}
filesize = value;
got_clen = 1;
}
@ -417,7 +425,7 @@ read_response:
dfp = open_socket(&s_in);
if (beg_range) {
sprintf(buf, "REST %lld", (long long)beg_range);
sprintf(buf, "REST "FILEOFF_FMT, beg_range);
if (ftpcmd(buf, NULL, sfp, buf) == 350)
filesize -= beg_range;
}
@ -432,17 +440,18 @@ read_response:
*/
if (chunked) {
fgets(buf, sizeof(buf), dfp);
filesize = strtol(buf, (char **) NULL, 16);
filesize = STRTOOFF(buf, (char **) NULL, 16);
/* FIXME: error check?? */
}
if (quiet_flag == FALSE)
if (!(opt & WGET_OPT_QUIET))
progressmeter(-1);
do {
while (filesize > 0 || !got_clen) {
unsigned rdsz = sizeof(buf);
if (filesize < sizeof(buf) && (chunked || got_clen))
rdsz = filesize;
rdsz = (unsigned)filesize;
n = safe_fread(buf, 1, rdsz, dfp);
if (n <= 0)
break;
@ -462,7 +471,8 @@ read_response:
if (chunked) {
safe_fgets(buf, sizeof(buf), dfp); /* This is a newline */
safe_fgets(buf, sizeof(buf), dfp);
filesize = strtol(buf, (char **) NULL, 16);
filesize = STRTOOFF(buf, (char **) NULL, 16);
/* FIXME: error check? */
if (filesize == 0) {
chunked = 0; /* all done! */
}
@ -473,7 +483,7 @@ read_response:
}
} while (chunked);
if (quiet_flag == FALSE)
if (!(opt & WGET_OPT_QUIET))
progressmeter(1);
if ((use_proxy == 0) && target.is_ftp) {
@ -662,10 +672,10 @@ static void
progressmeter(int flag)
{
static struct timeval lastupdate;
static off_t lastsize, totalsize;
static FILEOFF_TYPE lastsize, totalsize;
struct timeval now, td, tvwait;
off_t abbrevsize;
FILEOFF_TYPE abbrevsize;
int elapsed, ratio, barlength, i;
char buf[256];