#!/bin/sh

# API reference: https://www.stopforumspam.com/usage

ip=$1
repl=`mktemp`
logf=/var/log/forumspam.log

curl 'http://api.stopforumspam.org/api?ip='$ip 2>/dev/null > $repl

if ! grep -q '<response success="true">' $repl; then
	echo error failed to query stopforumspam api >> $logf
	rm $repl
	exit 1
fi
if ! grep -q '<appears>yes</appears>' $repl; then
	rm $repl
	exit 0
fi
freq=`grep '<frequency>' $repl | sed 's/<frequency>//; s!</frequency>!!'`
if [ "$freq" -ge 1 ]; then
	if ufw deny from $ip >/dev/null; then
		echo `date` blocked ip $ip with freq $freq >> $logf
		rm $repl
		exit 0
	else
		echo error failed to add ufw rule >> $logf
		rm $repl
		exit 2
	fi
fi
rm $repl