From d6e2106e96b6969e045251d972e1adcceb9728df Mon Sep 17 00:00:00 2001 From: David Oberhollenzer Date: Tue, 5 Jul 2022 15:34:08 +0200 Subject: Cleanup: move filename_sane & canonicalize_path functions to libutil Signed-off-by: David Oberhollenzer --- include/util/util.h | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) (limited to 'include/util') diff --git a/include/util/util.h b/include/util/util.h index af7d196..c18a558 100644 --- a/include/util/util.h +++ b/include/util/util.h @@ -43,4 +43,23 @@ SQFS_INTERNAL bool is_memory_zero(const void *blob, size_t size); */ SQFS_INTERNAL int mkdir_p(const char *path); +/* + Remove all preceeding and trailing slashes, collapse all sequences of + slashes, remove all path components that are '.' and returns failure + state if one of the path components is '..'. + + Returns 0 on success. +*/ +SQFS_INTERNAL int canonicalize_name(char *filename); + +/* + Returns true if a given filename is sane, false if it is not (e.g. contains + slashes or it is equal to '.' or '..'). + + If check_os_specific is true, this also checks if the filename contains + a character, or is equal to a name, that is black listed on the current OS. + E.g. on Windows, a file named "COM0" or "AUX" is a no-no. + */ +SQFS_INTERNAL bool is_filename_sane(const char *name, bool check_os_specific); + #endif /* SQFS_UTIL_H */ -- cgit v1.2.3