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wget: -O FILE is allowed to overwrite existing file (compat)

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This commit is contained in:
Denis Vlasenko 2007-09-27 15:07:23 +00:00
parent 6124c37135
commit a36535b067
1 changed files with 16 additions and 10 deletions
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26
networking/wget.c
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@ -409,8 +409,8 @@ int wget_main(int argc, char **argv)
llist_t *headers_llist = NULL;
#endif
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) */
FILE *dfp; /* socket to ftp server (data) */
char *fname_out; /* where to direct output (-O) */
bool got_clen = 0; /* got content-length: from server */
int output_fd = -1;
bool use_proxy = 1; /* Use proxies if env vars are set */
@ -496,7 +496,7 @@ int wget_main(int argc, char **argv)
}
/* Guess an output filename, if there was no -O FILE */
if (!fname_out) {
if (!(opt & WGET_OPT_OUTNAME)) {
fname_out = bb_get_last_path_component_nostrip(target.path);
/* handle "wget http://kernel.org//" */
if (fname_out[0] == '/' || !fname_out[0])
@ -504,6 +504,12 @@ int wget_main(int argc, char **argv)
/* -P DIR is considered only if there was no -O FILE */
if (dir_prefix)
fname_out = concat_path_file(dir_prefix, fname_out);
} else {
if (LONE_DASH(fname_out)) {
/* -O - */
output_fd = 1;
opt &= ~WGET_OPT_CONTINUE;
}
}
#if ENABLE_FEATURE_WGET_STATUSBAR
curfile = bb_get_last_path_component_nostrip(fname_out);
@ -514,10 +520,6 @@ int wget_main(int argc, char **argv)
bb_error_msg_and_die("cannot specify continue (-c) without a filename (-O)"); */
/* Determine where to start transfer */
if (LONE_DASH(fname_out)) {
output_fd = 1;
opt &= ~WGET_OPT_CONTINUE;
}
if (opt & WGET_OPT_CONTINUE) {
output_fd = open(fname_out, O_WRONLY);
if (output_fd >= 0) {
@ -744,9 +746,13 @@ int wget_main(int argc, char **argv)
*/
/* Do it before progressmeter (want to have nice error message) */
if (output_fd < 0)
output_fd = xopen(fname_out,
O_WRONLY|O_CREAT|O_EXCL|O_TRUNC);
if (output_fd < 0) {
int o_flags = O_WRONLY | O_CREAT | O_TRUNC | O_EXCL;
/* compat with wget: -O FILE can overwrite */
if (opt & WGET_OPT_OUTNAME)
o_flags = O_WRONLY | O_CREAT | O_TRUNC;
output_fd = xopen(fname_out, o_flags);
}
if (!(opt & WGET_OPT_QUIET))
progressmeter(-1);