user password in mail-filter plugin

[Thomas Möhle]

Am 04.02.2016 um 20:54 schrieb Timo Sirainen:
> On 04 Feb 2016, at 19:41, Thomas Möhle <thomas at bitkomplex.de> wrote:
>>
>> Am 04.02.2016 um 17:43 schrieb Timo Sirainen:
>>> On 04 Feb 2016, at 03:44, Thomas Möhle <thomas at bitkomplex.de> wrote:
>>>>
>>>> Hello,
>>>>
>>>> I would like to use the users password within a mail-filter script.
>>>> Dovecots %w variable is only available within dovecot-auth, is there any
>>>> way to access the password for a mail-filter?
>>>
>>> Something like this should work in recent versions:
>>>
>>> passdb {
>>>  ..
>>>  override_fields = userdb_pass=%w
>>> }
>>>
>>> plugin {
>>>  mail_filter = mail-filter %{userdb:pass}
>>> }
>>>
>>
>> Thanks for that idea, unfortunately %{ seems to be misinterpreted and
>> the mail-filter script recieves the rest of the string "userdb:pass}" as
>> a parameter, instead of the password.
> 
> Do you have v2.2.19 or newer? That's required for %{userdb:*} to work. Without that you'd need to override the whole mail_filter in your passdb/userdb.

I had v2.2.18 (Ubuntu 15.10) installed, so I updated to v2.2.21 now.

>> So, do I get this right? During login the content of dovecots %w
>> variable is supposed to be stored in a userdb field, called userdb_pass,
>> and the %{x} is supposed to get the content of that field?
> 
> Mostly, yes. You need the "pass" field to be in userdb to access it in mail processes. The password is only available in passdb though, so you need to store it with userdb_ prefix to get it saved into userdb extra fields instead of passdb extra fields.
> 

Unfortunately it still doesn't work. The filter-script does not recieve
any data from that variable.
I tried replacing the %w with %u, to see, if the filter-script would at
least recieve the username then, but that doesn't work, either. So I'm
not sure, if %{userdb:pass} isn't read correctly, or if "override_fields
= userdb_pass=%w" doesn't set it right.