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This patch from Laurence Anderson <laurence@zxmail.com> fixes

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wget HTTP 1.1 support and addes chunked encoding so bb wget
is now fully RFC compliant.
This commit is contained in:
Eric Andersen 2001-04-10 18:17:05 +00:00
parent fd402941a7
commit 6d7fa438a7
4 changed files with 73 additions and 44 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
Changelog
View File

@ -22,6 +22,8 @@
* Erik Andersen -- Cleanups for libc5, glibc, and uClibc.
* Erik Andersen and Matt Kraai -- Cleanups for the human-readable
output from ls, du, and df.
* Laurence Anderson <laurence@zxmail.com> -- Fixed wget HTTP 1.1
support and added chunked encoding so it is now RFC compliant.
* John Beppu -- The busybox.pod documentation is now automagically
generated from the source code. This makes it _much_ simpler.
Now to update the docs, just update the usage message...
@ -51,6 +53,7 @@
* Vladimir Oleynik -- More cmdedit updates
* Vladimir Oleynik -- Fixed `du' applet so it continues running
after permission errors.
* Vladimir Oleynik -- Reduced stack usage in recursive_action()
* Pierre Peiffer <pierre.peiffer@sxb.bsf.alcatel.fr> -- made
find_pid_by_name() cope with swapped out processes.
* Jari Ruusu <jari.ruusu@pp.inet.fi> -- updates so that setting
@ -58,13 +61,12 @@
* Anthony Towns <aj@azure.humbug.org.au> -- fixed a bug with
sed address range handling
* Dmitry Zakharov <dmit@crp.bank.gov.ua> -- a number of updates
to wget: support for ftp downloads, basic HTTP basic auth,
handling of http redirects, protocol changed to 1.0 to stop
servers from requesting chunked encoding, when attempting to
continue an aborted download but server doesn't support restarts
then reopen output file in write mode, bugfix: when content-length
not given, wget didn't download anything, if -c is not specified,
it no longer default to restarting an aborted download.
to wget: support for ftp downloads, basic HTTP basic auth, handling
of http redirects, when attempting to continue an aborted download
but server doesn't support restarts then reopen output file in
write mode, bugfix: when content-length not given, wget didn't
download anything, if -c is not specified, it no longer default to
restarting an aborted download.
-Erik Andersen, not yet released
@ -76,8 +78,8 @@
* Erik Andersen -- lash environment variable expansion rewritten,
with lots of help/fixes/testing from Larry Doolittle.
* Erik Andersen -- Fix use of busybox with dmalloc debugging lib
* Erik Andersen -- fixed ls behavior for broken or very narrow terminals.
* Erik Andersen -- stub umount2 and pivot_root if they are not available.
* Erik Andersen -- fixed ls behavior for broken or very narrow terminals
* Erik Andersen -- stub umount2 and pivot_root if they are not available
* Erik Andersen -- libc5 fixes
* Erik Andersen -- make init work with devfsd
* Erik Andersen -- fixed df for nfs and dos where blksize = 512

3
docs/busybox.pod
View File

@ -770,6 +770,7 @@ Options:
-H prefix output lines with filename where match was found
-h suppress the prefixing filename on output
-i ignore case distinctions
-l list names of files that match
-n print line number with output lines
-q be quiet. Returns 0 if result was found, 1 otherwise
-v select non-matching lines
@ -2536,4 +2537,4 @@ Enrique Zanardi <ezanardi@ull.es>
=cut
# $Id: busybox.pod,v 1.99 2001/04/10 00:00:05 kraai Exp $
# $Id: busybox.pod,v 1.100 2001/04/10 18:17:05 andersen Exp $

47
networking/wget.c
View File

@ -4,14 +4,6 @@
*
* Chip Rosenthal Covad Communications <chip@laserlink.net>
*
* Note: According to RFC2616 section 3.6.1, "All HTTP/1.1 applications MUST be
* able to receive and decode the "chunked" transfer-coding, and MUST ignore
* chunk-extension extensions they do not understand."
*
* This prevents this particular wget app from completely RFC compliant, and as
* such, prevents it from being used as a general purpose web browser... This
* is a design decision, since it makes the code smaller.
*
*/
#include <stdio.h>
@ -63,6 +55,7 @@ static void progressmeter(int flag);
/* Globals (can be accessed from signal handlers */
static off_t filesize = 0; /* content-length of the file */
static int chunked = 0; /* chunked transfer encoding */
#ifdef BB_FEATURE_WGET_STATUSBAR
static char *curfile; /* Name of current file being transferred. */
static struct timeval start; /* Time a transfer started. */
@ -231,11 +224,11 @@ int wget_main(int argc, char **argv)
* Send HTTP request.
*/
if (proxy) {
fprintf(sfp, "GET %stp://%s:%d/%s HTTP/1.0\r\n",
fprintf(sfp, "GET %stp://%s:%d/%s HTTP/1.1\r\n",
target.is_ftp ? "f" : "ht", target.host,
target.port, target.path);
} else {
fprintf(sfp, "GET /%s HTTP/1.0\r\n", target.path);
fprintf(sfp, "GET /%s HTTP/1.1\r\n", target.path);
}
fprintf(sfp, "Host: %s\r\nUser-Agent: Wget\r\n", target.host);
@ -258,7 +251,7 @@ int wget_main(int argc, char **argv)
/*
* Retrieve HTTP response line and check for "200" status code.
*/
if (fgets(buf, sizeof(buf), sfp) == NULL)
read_response: if (fgets(buf, sizeof(buf), sfp) == NULL)
close_delete_and_die("no response from server");
for (s = buf ; *s != '\0' && !isspace(*s) ; ++s)
@ -267,6 +260,9 @@ int wget_main(int argc, char **argv)
;
switch (status = atoi(s)) {
case 0:
case 100:
while (gethdr(buf, sizeof(buf), sfp, &n) != NULL);
goto read_response;
case 200:
if (do_continue && output != stdout)
output = freopen(fname_out, "w", output);
@ -295,9 +291,13 @@ int wget_main(int argc, char **argv)
got_clen = 1;
continue;
}
if (strcasecmp(buf, "transfer-encoding") == 0)
if (strcasecmp(buf, "transfer-encoding") == 0) {
if (strcasecmp(s, "chunked") == 0) {
chunked = got_clen = 1;
} else {
close_delete_and_die("server wants to do %s transfer encoding", s);
}
}
if (strcasecmp(buf, "location") == 0) {
if (s[0] == '/')
target.path = xstrdup(s+1);
@ -386,12 +386,17 @@ int wget_main(int argc, char **argv)
/*
* Retrieve file
*/
if (chunked) {
fgets(buf, sizeof(buf), dfp);
filesize = strtol(buf, (char **) NULL, 16);
}
do {
#ifdef BB_FEATURE_WGET_STATUSBAR
statbytes=0;
if (quiet_flag==FALSE)
progressmeter(-1);
#endif
while ((filesize > 0 || !got_clen) && (n = fread(buf, 1, sizeof(buf), dfp)) > 0) {
while ((filesize > 0 || !got_clen) && (n = fread(buf, 1, chunked ? (filesize > sizeof(buf) ? sizeof(buf) : filesize) : sizeof(buf), dfp)) > 0) {
fwrite(buf, 1, n, output);
#ifdef BB_FEATURE_WGET_STATUSBAR
statbytes+=n;
@ -402,8 +407,16 @@ int wget_main(int argc, char **argv)
filesize -= n;
}
if (chunked) {
fgets(buf, sizeof(buf), dfp); /* This is a newline */
fgets(buf, sizeof(buf), dfp);
filesize = strtol(buf, (char **) NULL, 16);
if (filesize==0) chunked = 0; /* all done! */
}
if (n == 0 && ferror(dfp))
perror_msg_and_die("network read error");
} while (chunked);
if (!proxy && target.is_ftp) {
fclose(dfp);
@ -411,7 +424,7 @@ int wget_main(int argc, char **argv)
error_msg_and_die("ftp error: %s", buf+4);
ftpcmd("QUIT", NULL, sfp, buf);
}
printf("\n");
exit(EXIT_SUCCESS);
}
@ -608,7 +621,7 @@ progressmeter(int flag)
(void) gettimeofday(&now, (struct timezone *) 0);
cursize = statbytes;
if (filesize != 0) {
if (filesize != 0 && !chunked) {
ratio = 100.0 * cursize / filesize;
ratio = MAX(ratio, 0);
ratio = MIN(ratio, 100);
@ -719,7 +732,7 @@ progressmeter(int flag)
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $Id: wget.c,v 1.31 2001/04/05 21:45:53 andersen Exp $
* $Id: wget.c,v 1.32 2001/04/10 18:17:05 andersen Exp $
*/

47
wget.c
View File

@ -4,14 +4,6 @@
*
* Chip Rosenthal Covad Communications <chip@laserlink.net>
*
* Note: According to RFC2616 section 3.6.1, "All HTTP/1.1 applications MUST be
* able to receive and decode the "chunked" transfer-coding, and MUST ignore
* chunk-extension extensions they do not understand."
*
* This prevents this particular wget app from completely RFC compliant, and as
* such, prevents it from being used as a general purpose web browser... This
* is a design decision, since it makes the code smaller.
*
*/
#include <stdio.h>
@ -63,6 +55,7 @@ static void progressmeter(int flag);
/* Globals (can be accessed from signal handlers */
static off_t filesize = 0; /* content-length of the file */
static int chunked = 0; /* chunked transfer encoding */
#ifdef BB_FEATURE_WGET_STATUSBAR
static char *curfile; /* Name of current file being transferred. */
static struct timeval start; /* Time a transfer started. */
@ -231,11 +224,11 @@ int wget_main(int argc, char **argv)
* Send HTTP request.
*/
if (proxy) {
fprintf(sfp, "GET %stp://%s:%d/%s HTTP/1.0\r\n",
fprintf(sfp, "GET %stp://%s:%d/%s HTTP/1.1\r\n",
target.is_ftp ? "f" : "ht", target.host,
target.port, target.path);
} else {
fprintf(sfp, "GET /%s HTTP/1.0\r\n", target.path);
fprintf(sfp, "GET /%s HTTP/1.1\r\n", target.path);
}
fprintf(sfp, "Host: %s\r\nUser-Agent: Wget\r\n", target.host);
@ -258,7 +251,7 @@ int wget_main(int argc, char **argv)
/*
* Retrieve HTTP response line and check for "200" status code.
*/
if (fgets(buf, sizeof(buf), sfp) == NULL)
read_response: if (fgets(buf, sizeof(buf), sfp) == NULL)
close_delete_and_die("no response from server");
for (s = buf ; *s != '\0' && !isspace(*s) ; ++s)
@ -267,6 +260,9 @@ int wget_main(int argc, char **argv)
;
switch (status = atoi(s)) {
case 0:
case 100:
while (gethdr(buf, sizeof(buf), sfp, &n) != NULL);
goto read_response;
case 200:
if (do_continue && output != stdout)
output = freopen(fname_out, "w", output);
@ -295,9 +291,13 @@ int wget_main(int argc, char **argv)
got_clen = 1;
continue;
}
if (strcasecmp(buf, "transfer-encoding") == 0)
if (strcasecmp(buf, "transfer-encoding") == 0) {
if (strcasecmp(s, "chunked") == 0) {
chunked = got_clen = 1;
} else {
close_delete_and_die("server wants to do %s transfer encoding", s);
}
}
if (strcasecmp(buf, "location") == 0) {
if (s[0] == '/')
target.path = xstrdup(s+1);
@ -386,12 +386,17 @@ int wget_main(int argc, char **argv)
/*
* Retrieve file
*/
if (chunked) {
fgets(buf, sizeof(buf), dfp);
filesize = strtol(buf, (char **) NULL, 16);
}
do {
#ifdef BB_FEATURE_WGET_STATUSBAR
statbytes=0;
if (quiet_flag==FALSE)
progressmeter(-1);
#endif
while ((filesize > 0 || !got_clen) && (n = fread(buf, 1, sizeof(buf), dfp)) > 0) {
while ((filesize > 0 || !got_clen) && (n = fread(buf, 1, chunked ? (filesize > sizeof(buf) ? sizeof(buf) : filesize) : sizeof(buf), dfp)) > 0) {
fwrite(buf, 1, n, output);
#ifdef BB_FEATURE_WGET_STATUSBAR
statbytes+=n;
@ -402,8 +407,16 @@ int wget_main(int argc, char **argv)
filesize -= n;
}
if (chunked) {
fgets(buf, sizeof(buf), dfp); /* This is a newline */
fgets(buf, sizeof(buf), dfp);
filesize = strtol(buf, (char **) NULL, 16);
if (filesize==0) chunked = 0; /* all done! */
}
if (n == 0 && ferror(dfp))
perror_msg_and_die("network read error");
} while (chunked);
if (!proxy && target.is_ftp) {
fclose(dfp);
@ -411,7 +424,7 @@ int wget_main(int argc, char **argv)
error_msg_and_die("ftp error: %s", buf+4);
ftpcmd("QUIT", NULL, sfp, buf);
}
printf("\n");
exit(EXIT_SUCCESS);
}
@ -608,7 +621,7 @@ progressmeter(int flag)
(void) gettimeofday(&now, (struct timezone *) 0);
cursize = statbytes;
if (filesize != 0) {
if (filesize != 0 && !chunked) {
ratio = 100.0 * cursize / filesize;
ratio = MAX(ratio, 0);
ratio = MIN(ratio, 100);
@ -719,7 +732,7 @@ progressmeter(int flag)
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $Id: wget.c,v 1.31 2001/04/05 21:45:53 andersen Exp $
* $Id: wget.c,v 1.32 2001/04/10 18:17:05 andersen Exp $
*/