Hi,
I'm trying to block specific MUAs, like e.g. Outlook-App for iOS and Android or
Xiaomi Mail / MiMail using a lua script.
While implementing this, I noticed that "client_id" is always nil in the lua
script or I am doing something wrong.
This is part of the postfix config:
imap_id_retain = yes
imap_id_log = *
passdb {
driver = lua
args = file=/etc/dovecot/lua/badimapid.lua blocking=yes
}
Logging (imap_id_log = *) works, the dovecot log has entries like:
imap(user@domain)<226><pWFZx9siRt+CUwMp>: ID sent: name=Thunderbird,
version=115.15.0
Here is the content of the lua-script file:
function auth_passdb_lookup(req)
req.log_info('badimapid info: user="'..req.user..'",
client_id="'..req.client_id..'"')
return dovecot.auth.PASSDB_RESULT_NEXT, ""
end
function script_init()
return 0
end
function script_deinit()
end
In principle, "req.client_id" should contain the client id string according to
https://doc.dovecot.org/2.3/configuration_manual/authentication/lua_based_authentication/
However, dovecot log reads:
auth-worker(163): Error: conn unix:auth-worker (pid=162,uid=401):
auth-worker<27>: lua(user@domain): db-lua: lua_pcall(auth_passdb_lookup, 1, 2)
failed: /etc/dovecot/lua/badimapid.lua:2: attempt to concatenate a nil value
(field 'client_id')
Why is client_id nil?
Thanks,
Thorsten
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