+/*
+ * Vet a filename returned from the remote host, to ensure it isn't
+ * in some way malicious. The idea is that this function is applied
+ * to filenames returned from FXP_READDIR, which means we can panic
+ * if we see _anything_ resembling a directory separator.
+ *
+ * Returns TRUE if the filename is kosher, FALSE if dangerous.
+ */
+int vet_filename(char *name);
+