[Nut-upsuser] Maximum length of password
roger at rogerprice.org
Wed Apr 6 12:28:59 BST 2022
On Wed, 6 Apr 2022, Jim Klimov wrote:
> Also does not seem dictated in docs nor comments. De-facto it is a string
> pointer, in some code constrained by a SMALLBUF sized character array, where
> SMALLBUF is a macro currently defined to 512.
I decided to fix arbitrary limits in the grammar based on the principle "Be
strict in what you send, and generous in what you accept".
UPS name maximum characters : 15
User name maximum characters : 15
Password maximum characters : 31
SET VAR <upsname> <varname> "<value>", <value> maximum characters : 63
Since the IETF's ABNF grammar rules are US-ASCII based, I added the note:
Implementation note: The ANBF is written using the provisions of [RFC5234]
[RFC7405] which are US-ASCII based. Implementors should be aware that NUT
itself is Unicode based and that where the grammar specifies ALPHA = %x41-5A /
%x61-7A ; A-Z / a-z an implementation should expect letters outside the range
specified by ALPHA.
For example a USERNAME value may contain accented letters.
Comments, as always, are welcome.
More information about the Nut-upsuser