options: don't leak inline'd key material in logfile

options: don't leak inline'd key material in logfile

With the conversion of the introduction of a bool variable to signal
when a certain string is a filename or the actual (inline'd) key
material, the SHOW_STR() macro is now leaking the inline'd material to
the log file.

This happens because SHOW_STR will just print the content of the passed
argument without any check. With the new logic this should not happen
anymore.

A new macro SHOW_STR_INLINE() is therefore introduced which will check
the appropriate bool member before deciding to print the actual string
content or not.

Trac: #1304
Reported-by: Richard Bonhomme <tincanteksup@gmail.com>
Signed-off-by: Antonio Quartulli <a@unstable.cc>
Acked-by: Gert Doering <gert@greenie.muc.de>
Message-Id: <20200717212820.8998-1-a@unstable.cc>
URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg20472.html
Signed-off-by: Gert Doering <gert@greenie.muc.de>