A simple anti-spam system for
[question2answer](https://www.question2answer.org/qa/), using [the
stopforumspam API](https://www.stopforumspam.com/usage) and
[ufw](https://launchpad.net/ufw).

To deploy:

* modify the configuration variables in the scripts
* copy the scripts to `/usr/local/bin`
* create the user

        useradd -s /sbin/nologin _forumspam

* if using `pf`:
    * create appropriate permissions for the file:

        install -m 640 -o _forumspam -g wheel /dev/null /etc/pf-forumspam.txt

    * add the following to `/etc/pf.conf`, preferably high up in the ruleset:

        table <forumspam> persist file "/etc/pf-forumspam.txt"
        block in quick on egress from <forumspam>
        block out quick on egress to <forumspam>

* set up sudo or doas:
    * for doas:
        * add the following to `/etc/doas.conf`:

        permit nopass _forumspam cmd pfctl args -nf /etc/pf.conf
        permit nopass _forumspam cmd pfctl args -t forumspam -T replace -f /etc/pf-forumspam.txt

    * for sudo:
        * add to your sudo config file:
          `Cmnd_Alias FIREWALL = /usr/sbin/ufw, /sbin/iptables`
          and `_forumspam ALL = NOPASSWD: FIREWALL`

* register `q2a_usercheck.sh` as a systemd unit or rc script

TODO:
* also check against [botscout](http://botscout.com/api.htm)
* give the scripts more sensible names