Thanks, I had missed that! Perhaps it would be helpful for bankd to explicitly log that no reader was found according to the regex - in my case the problem wasn't obvious, and the client would keep retrying in a loop.

On Wed, Jul 19, 2023, 13:29 Harald Welte <laforge@osmocom.org> wrote:
Dear Adrian,

On Wed, Jul 12, 2023 at 04:44:50PM +0300, Adrian Popa wrote:
> Now - if it's using a regex to search for the reader string, the fact
> that my reader has [] and () in it will break the regex search, right?

yes.

> I've changed /etc/osmocom/bankd_pcsc_slots.csv, and set just:
> "1","1","SCM Microsystems Inc. SCR 3310"
> as the reader name/mapping, leaving out the special characters, and it
> started ok.
>
> I suggest making a note of this in the documentation, that special
> characters in the reader name are checked via regular expressions.

This is already documented rather explicitly, please see
https://gitea.osmocom.org/sim-card/osmo-remsim/src/commit/958ae50de114def58e3213a06d469de0bb19fa7d/doc/manuals/chapters/remsim-bankd.adoc#L150

| NOTE:: If the reader name contains any special characters, they might need to be escaped according
| to the extended POSIX regular expression syntax. See `man 7 regex` for a reference.

The example config file snippet just below it also contains \[ style escaping

--
- Harald Welte <laforge@osmocom.org>           https://laforge.gnumonks.org/
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