invalida characters

[Damian Minkov]

Hey,

We have been cleaning up our logs lately and we came upon these two errors about invalid characters. Any recommendations, how do we handle those and prevent them?

Jul 05 11:42:58 c2s56224b453640 error   Traceback[c2s]: /usr/share/lua/5.2/prosody/util/stanza.lua:51: invalid tag name: contains invalid characters         stack traceback:         [C]: in function 'error'         /usr/share/lua/5.2/prosody/util/stanza.lua:51: in function 'check_name'         /usr/share/lua/5.2/prosody/util/stanza.lua:82: in function 'new_stanza'         /usr/share/lua/5.2/prosody/util/stanza.lua:105: in function 'tag'         /usr/lib/prosody/modules/mod_saslauth.lua:33: in function 'build_reply'         /usr/lib/prosody/modules/mod_saslauth.lua:82: in function </usr/lib/prosody/modules/mod_saslauth.lua:70>         (...tail calls...)         /usr/share/lua/5.2/prosody/util/events.lua:81: in function </usr/share/lua/5.2/prosody/util/events.lua:77>         (...tail calls...)         /usr/share/lua/5.2/prosody/core/stanza_router.lua:143: in function 'core_process_stanza'         /usr/lib/prosody/modules/mod_c2s.lua:326: in function 'func'         /usr/share/lua/5.2/prosody/util/async.lua:144: in function </usr/share/lua/5.2/prosody/util/async.lua:142>

Aug 01 17:29:54 server_epoll    error   Error in timer: /usr/share/lua/5.2/prosody/util/stanza.lua:65: invalid text value: contains invalid utf8         stack traceback:         [C]: in function 'error'         /usr/share/lua/5.2/prosody/util/stanza.lua:65: in function 'check_text'         /usr/share/lua/5.2/prosody/util/stanza.lua:141: in function 'add_direct_child'         /usr/share/lua/5.2/prosody/util/stanza.lua:116: in function 'text'         /usr/share/jitsi-meet/prosody-plugins/util.lib.lua:218: in function 'update_presence_identity'         ...are/jitsi-meet/prosody-plugins/mod_presence_identity.lua:11: in function '?'         /usr/share/lua/5.2/prosody/util/events.lua:81: in function </usr/share/lua/5.2/prosody/util/events.lua:77>         (...tail calls...)         /usr/share/lua/5.2/prosody/core/stanza_router.lua:184: in function 'core_post_stanza'         /usr/lib/prosody/modules/mod_presence.lua:382: in function '?'         /usr/share/lua/5.2/prosody/util/events.lua:81: in function </usr/share/lua/5.2/prosody/util/events.lua:77>         (...tail calls...)         /usr/share/lua/5.2/prosody/core/sessionmanager.lua:123: in function 'destroy_session'         /usr/lib/prosody/modules/mod_smacks.lua:494: in function </usr/lib/prosody/modules/mod_smacks.lua:477>         (...tail calls...)         [C]: in function 'xpcall'         /usr/share/lua/5.2/prosody/net/server_epoll.lua:148: in function 'runtimers'         /usr/share/lua/5.2/prosody/net/server_epoll.lua:1038: in function </usr/share/lua/5.2/prosody/net/server_epoll.lua:1036>         [C]: in function 'xpcall'         /usr/bin/prosody:78: in function 'loop'         /usr/bin/prosody:83: in main chunk         [C]: in ?

Thank you

damencho

[Kim Alvefur]

Hi,

On Fri, Nov 03, 2023 at 09:42:55AM -0700, Damian Minkov wrote:
>We have been cleaning up our logs lately and we came upon these two errors
>about invalid characters. Any recommendations, how do we handle those and
>prevent them?

(reduced)

>util/stanza.lua:51: invalid tag name: contains invalid characters

>mod_saslauth.lua:33: in function 'build_reply'

This one suggests that the SASL handler or authentication module
returned an invalid error code, i.e. things like "malformed-request".
Hard to say more than that based on only this traceback.

>Error in timer: util/stanza.lua:65: invalid text value: contains invalid utf8
>...are/jitsi-meet/prosody-plugins/mod_presence_identity.lua:11: in function

Looks like invalid or corrupt UTF-8 got into this module, via a timer.

Hope that's enough to proceed.

--
Regards,
Kim "Zash" Alvefur