File geoip-fetch of Package GeoIP

#!/bin/bash

set -e

baseurl="http://geolite.maxmind.com/download/geoip/database"
geoipdir='/var/lib/GeoIP'

tempdir=`mktemp -d`
cd "$tempdir"
trap "/bin/rm -rf $tempdir" EXIT

sources=(GeoLiteCountry/GeoIP.dat.gz GeoIPv6.dat.gz asnum/GeoIPASNum.dat.gz -- GeoLiteCity.dat.gz)
targets=(GeoIP.dat                   GeoIPv6.dat    GeoIPASNum.dat          -- GeoIPCity.dat)

verbose=
if [ -t 0 ]; then
	verbose="-#"
fi
skiplarge=1
if [ "$1" = "-a" ]; then
	skiplarge=
	shift
fi

i=0
while [ $i -lt ${#sources[@]} ]; do
	if [ ${sources[$i]} = '--' ]; then
		i=$((i+1))
		[ -z "$skiplarge" ] || break
		continue
	fi
	[ -z "$verbose" ] || echo "${targets[$i]} ..."
	if curl ${verbose:--s} -f -o "$tempdir/${targets[$i]}.gz" "$baseurl/${sources[$i]}"; then
		if gzip -d ${targets[$i]}.gz; then
			mv ${targets[$i]} "$geoipdir/${targets[$i]}"
		fi
	fi
	i=$((i+1))
done