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| author | Denys Vlasenko | 2017-08-10 11:52:42 +0200 |
|---|---|---|
| committer | Denys Vlasenko | 2017-08-10 11:52:42 +0200 |
| commit | bc9bbeb2b81001e8731cd2ae501c8fccc8d87cc7 (patch) | |
| tree | 72672bb0c187b93f1fba99012cf0c4e716214298 /archival/tar.c | |
| parent | 0cf64c8b5d86d603903397bfce87dea5a862caec (diff) | |
| download | busybox-bc9bbeb2b81001e8731cd2ae501c8fccc8d87cc7.zip busybox-bc9bbeb2b81001e8731cd2ae501c8fccc8d87cc7.tar.gz | |
libarchive: do not extract unsafe symlinks unless $EXTRACT_UNSAFE_SYMLINKS=1
function old new delta
unsafe_symlink_target - 147 +147
unzip_main 2711 2732 +21
copy_file 1657 1678 +21
tar_main 999 971 -28
data_extract_all 1038 984 -54
------------------------------------------------------------------------------
(add/remove: 2/0 grow/shrink: 2/2 up/down: 189/-82) Total: 107 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'archival/tar.c')
| -rw-r--r-- | archival/tar.c | 19 |
1 files changed, 0 insertions, 19 deletions
diff --git a/archival/tar.c b/archival/tar.c index 73c14ca..9a5bcc7 100644 --- a/archival/tar.c +++ b/archival/tar.c @@ -278,23 +278,6 @@ static void chksum_and_xwrite(int fd, struct tar_header_t* hp) xwrite(fd, hp, sizeof(*hp)); } -static void replace_symlink_placeholders(llist_t *list) -{ - while (list) { - char *target; - - target = list->data + strlen(list->data) + 1; - if (symlink(target, list->data)) { - /* shared message */ - bb_error_msg_and_die("can't create %slink '%s' to '%s'", - "sym", - list->data, target - ); - } - list = list->link; - } -} - #if ENABLE_FEATURE_TAR_GNU_EXTENSIONS static void writeLongname(int fd, int type, const char *name, int dir) { @@ -1255,8 +1238,6 @@ int tar_main(int argc UNUSED_PARAM, char **argv) while (get_header_tar(tar_handle) == EXIT_SUCCESS) bb_got_signal = EXIT_SUCCESS; /* saw at least one header, good */ - replace_symlink_placeholders(tar_handle->symlink_placeholders); - /* Check that every file that should have been extracted was */ while (tar_handle->accept) { if (!find_list_entry(tar_handle->reject, tar_handle->accept->data) |