var glob = Object();
glob.proxlist = new Array();
glob.prox = "";
glob.cache = new Array();
glob.dnscache = new Array();
glob.listReady = false;

function iptoint(sip)
{
        var ss = sip.split('.');
        return ss[0]*256*256*256+ss[1]*256*256+ss[2]*256+ss[3]*1;
}

function getBits(n,bitcount)
{
        var x, n2, i;
        for(x=n, n2=i=0; i<bitcount; i++) {
                n2 += Math.abs(x%2) * Math.pow(2, i);
                x = Math.floor(x/2);
        }
        return(n2);
}

function isIn(ip, mask, net)
{
        if(ip=="127.0.0.1") return true;
        if(ip=="192.168.100.1") return true;
        var u = Math.pow(2, 32)-1;
        u = u << (32-mask);
        return getBits(u & iptoint(ip), 32) == getBits(iptoint(net), 32);
}

function prepareList()
{
        glob.proxlist = glob.prox.split('\n');
}

function getReturn(stat)
{
        if(stat)
                return "DIRECT";
        else
                return "PROXY 127.0.0.1:3128";
}

function myResolve(host)
{
        if(glob.dnscache[host]) {
                return glob.dnscache[host];
        } else {
                var res = dnsResolve(host);
                glob.dnscache[host] = res;
                return res;
        }
}

function FindProxyForURL(url, host)
{
        if(!glob.listReady) {
                prepareList();
        }
        if(glob.cache[host] != undefined) {
                return getReturn(glob.cache[host]);
        }

        var text = myResolve(host);
        var ukrAddr = false;
        for (var i=0; i<glob.proxlist.length; i++)
        {
                var m = glob.proxlist[i].substr(glob.proxlist[i].indexOf("/")+1);
                var n = glob.proxlist[i].substr(0, glob.proxlist[i].indexOf("/"));
                if ( isIn(text, m, n) )
                {
                        ukrAddr = true;
                        break;
                }
        }
        glob.cache[host] = ukrAddr;
        return getReturn(ukrAddr);
}

// DYN CONTENT

echo " * Updating UA-IX list"
if [ -e "ua-list.txt" ]; then
echo ===================
head -n3 ua-list.txt
fi
echo ===================
rm -f ua-list.txt
wget -q http://noc.ix.net.ua/ua-list.txt &>/dev/null
head -n3 ua-list.txt
echo ===================

echo " * Stripping header"

lines=`wc -l ua-list.txt|cut -f 1 -d ' '`
lines=$[$lines - 4]

tail -n $lines ua-list.txt > ua-list

echo " * Updating script"

cat proxy-head.js > proxy.js
echo -n 'glob.prox = "' >> proxy.js
for i in `cat ua-list`; do
        echo "$i\\n\\" >> proxy.js
done
echo '";' >> proxy.js
echo " * Done"