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wget: -100 bytes, reduce stack usage, remove --header length limit

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This commit is contained in:
Denis Vlasenko 2006-10-23 23:21:58 +00:00
parent 703aa13ff5
commit 7534e0834f
1 changed files with 18 additions and 20 deletions
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38
networking/wget.c
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@ -111,15 +111,14 @@ static const struct option wget_long_options[] = {
int wget_main(int argc, char **argv)
{
int n, try=5, status;
unsigned opt;
int n, status;
int try = 5;
int port;
unsigned opt;
char *proxy = 0;
char *dir_prefix=NULL;
char *dir_prefix = NULL;
char *s, buf[512];
char extra_headers[1024];
char *extra_headers_ptr = extra_headers;
int extra_headers_left = sizeof(extra_headers);
char *extra_headers = NULL;
struct host_info server, target;
struct sockaddr_in s_in;
llist_t *headers_llist = NULL;
@ -149,18 +148,17 @@ int wget_main(int argc, char **argv)
/* Use the proxy if necessary. */
use_proxy = 0;
}
if (opt & WGET_OPT_HEADER) {
if (headers_llist) {
int size = 1;
char *cp;
llist_t *ll = headers_llist;
while (ll) {
size += strlen(ll->data) + 2;
ll = ll->link;
}
extra_headers = cp = xmalloc(size);
while (headers_llist) {
int arglen = strlen(headers_llist->data);
if (extra_headers_left - arglen - 2 <= 0)
bb_error_msg_and_die("extra_headers buffer too small "
"(need %i)", extra_headers_left - arglen);
strcpy(extra_headers_ptr, headers_llist->data);
extra_headers_ptr += arglen;
extra_headers_left -= ( arglen + 2 );
*extra_headers_ptr++ = '\r';
*extra_headers_ptr++ = '\n';
*(extra_headers_ptr + 1) = 0;
cp += sprintf(cp, "%s\r\n", headers_llist->data);
headers_llist = headers_llist->link;
}
}
@ -283,9 +281,9 @@ int wget_main(int argc, char **argv)
if (beg_range)
fprintf(sfp, "Range: bytes="OFF_FMT"-\r\n", beg_range);
if(extra_headers_left < sizeof(extra_headers))
fputs(extra_headers,sfp);
fprintf(sfp,"Connection: close\r\n\r\n");
if (extra_headers)
fputs(extra_headers, sfp);
fprintf(sfp, "Connection: close\r\n\r\n");
/*
* Retrieve HTTP response line and check for "200" status code.