#!/bin/sh

logf='/var/log/nginx/access.log'
cache='/tmp/forumspam_cache'

case `uname` in
    (*"BSD"*) tail_opts='-f';;
    (*) tail_opts='-F';;
esac

test -f $cache || install -m 600 /dev/null $cache

tail $tail_opts $logf | while read line ; do
	case $line in (*"POST"*)
		ip=`echo $line | awk '{print $1}'`
		ip_regex=`echo $ip | sed 's/\./\\./g; s/^/^/; s/$/$/'`
		if ! grep -q $ip_regex $cache; then
			/usr/local/bin/forumspam.sh "$ip" && echo $ip >> $cache
		fi
	esac
done