Move is_filename_sane to libfstree, add test cases

Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>

2 files changed, 10 insertions, 2 deletions

diff --git a/include/common.h b/include/common.h
index 8b2c66c..bdb3837 100644
--- a/include/common.h
+++ b/include/common.h
@@ -132,8 +132,6 @@ void sqfs_writer_cleanup(sqfs_writer_t *sqfs);
 
 void sqfs_perror(const char *file, const char *action, int error_code);
 
-bool is_filename_sane(const char *name, bool check_os_specific);
-
 /*
   A wrapper around mkdir() that behaves like 'mkdir -p'. It tries to create
   every component of the given path and skips already existing entries.
diff --git a/include/fstree.h b/include/fstree.h
index 7bc92fd..4ff8c5f 100644
--- a/include/fstree.h
+++ b/include/fstree.h
@@ -181,4 +181,14 @@ char *fstree_get_path(tree_node_t *node);
 */
 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.
+ */
+bool is_filename_sane(const char *name, bool check_os_specific);
+
 #endif /* FSTREE_H */