[Dovecot] building a simple antispam plugin

[Johannes Berg]

Hi,

> I'm trying to build another antispam plugin, but some things are a bit
> unclear.

What are you trying to achieve? Just build another backend for my
antispam plugin?

> In backend_handle_mail I put store the signature returned from
> signature_extract into my antispam_transaction_context. In
> backend_commit it appears that the signature is empty. (It wasn't in
> backend_handle_mail).
> 
> Somehow between backend_handle_mail en backend_commit it has been
> cleared... When I use i_strdup it appears to work. Anyone can tell me
> where this clearing happens? Is i_strdup the right way to do it then?

Well, how did you put it in there? It's well possible that the memory
was allocated on a stack or in a pool that has been cleared/freed...

johannes
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