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unzip: document some options we might support

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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2023-02-23 12:00:36 +01:00
parent 75197998c2
commit 029740a3e4
1 changed files with 7 additions and 0 deletions
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7
archival/unzip.c
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@ -559,6 +559,11 @@ int unzip_main(int argc, char **argv)
* 204372 1 file * 204372 1 file
*/ */
//TODO: accept and ignore these?
// -a convert to text files with 't' label, -aa: all files
// -b do not convert to text - bbox: we don't convert anything
// -D skip restoration of timestamps for extracted items - bbox: we don't restore these (yet?)
// -X restore user:group ownership
opts = 0; opts = 0;
/* '-' makes getopt return 1 for non-options */ /* '-' makes getopt return 1 for non-options */
while ((i = getopt(argc, argv, "-d:lnotpqxjvK")) != -1) { while ((i = getopt(argc, argv, "-d:lnotpqxjvK")) != -1) {
@ -583,6 +588,7 @@ int unzip_main(int argc, char **argv)
xmove_fd(xopen("/dev/null", O_WRONLY), STDOUT_FILENO); xmove_fd(xopen("/dev/null", O_WRONLY), STDOUT_FILENO);
/*fallthrough*/ /*fallthrough*/
// NB: -c extract files to stdout/screen (unlike -p, also prints .zip and file names to stdout)
case 'p': /* Extract files to stdout */ case 'p': /* Extract files to stdout */
dst_fd = STDOUT_FILENO; dst_fd = STDOUT_FILENO;
/*fallthrough*/ /*fallthrough*/
@ -853,6 +859,7 @@ int unzip_main(int argc, char **argv)
unzip_skip(zip.fmt.extra_len); unzip_skip(zip.fmt.extra_len);
/* Guard against "/abspath", "/../" and similar attacks */ /* Guard against "/abspath", "/../" and similar attacks */
// NB: UnZip 6.00 has option -: to disable this
overlapping_strcpy(dst_fn, strip_unsafe_prefix(dst_fn)); overlapping_strcpy(dst_fn, strip_unsafe_prefix(dst_fn));
/* Filter zip entries */ /* Filter zip entries */