22 Mar
2024
22 Mar
'24
8:45 a.m.
On 18/03/2024 09.59, Daniel Gultsch wrote:
This message constitutes notice of a Last Call for
comments on
XEP-0388.
Title: Extensible SASL Profile
Abstract:
This document describes a replacement for the SASL profile documented
in RFC 6120 which allows for greater extensibility.
URL: https://xmpp.org/extensions/xep-0388.html
This Last Call begins today and shall end at the close of business on
2024-04-01.
Please consider the following questions during this Last Call and send
your feedback to the standards(a)xmpp.org discussion list:
1. Is this specification needed to fill gaps in the XMPP protocol
stack or to clarify an existing protocol?
Yes.
2. Does the specification solve the problem stated in
the introduction
and requirements?
Yes.
3. Do you plan to implement this specification in your
code? If not,
why not?
No immediate plans, due the lack of resources on my end. However, it is
consensus that SASL2 and Bind2 are the frontier of current XMPP
stream/session establishment and hence are, or at least will become,
highly relevant. And the fundamental design of both is solid and
incorporates our experience with the current design.
4. Do you have any security concerns related to this
specification?
None at the moment.
5. Is the specification accurate and clearly written?
Just some random remarks:
- § 2.2 specifies that Base 64 encoding is used but does not reference
the specification for Base 64. Also, there are multiple flavors of
Base64, we may want to clarify which one is used.
- § 2.4 mandates that "Servers MUST disconnect Clients immediately if
any other traffic is received". Should we allow Servers to send a
stream:error with some helpful information about the cause for the
disconnect prior disconnecting?
- It would be nice if the mentioned RFCs in the documented where actual
linked references.
- § 7. says 'None' whereas this XEP introduces a new namespace
'urn:xmpp:sasl:2' which should be registered in the registrars namespace
registry (Yes I know that the XSF registrar is not in a good shape, but
still).
Thanks for working on SASL2.
- Florian