lib/geocoder/lookups/maxmind_local.rb
require 'ipaddr'
require 'geocoder/lookups/base'
require 'geocoder/results/maxmind_local'
module Geocoder::Lookup
class MaxmindLocal < Base
def initialize
if !configuration[:file].nil?
begin
gem = RUBY_PLATFORM == 'java' ? 'jgeoip' : 'geoip'
require gem
rescue LoadError
raise "Could not load geoip dependency. To use MaxMind Local lookup you must add the #{gem} gem to your Gemfile or have it installed in your system."
end
end
super
end
def name
"MaxMind Local"
end
def required_api_key_parts
[]
end
private
def results(query)
if configuration[:file]
geoip_class = RUBY_PLATFORM == "java" ? JGeoIP : GeoIP
geoip_instance = geoip_class.new(configuration[:file])
result =
if configuration[:package] == :country
geoip_instance.country(query.to_s)
else
geoip_instance.city(query.to_s)
end
result.nil? ? [] : [encode_hash(result.to_hash)]
elsif configuration[:package] == :city
addr = IPAddr.new(query.text).to_i
q = "SELECT l.country, l.region, l.city, l.latitude, l.longitude
FROM maxmind_geolite_city_location l WHERE l.loc_id = (SELECT b.loc_id FROM maxmind_geolite_city_blocks b
WHERE b.start_ip_num <= #{addr} AND #{addr} <= b.end_ip_num)"
format_result(q, [:country_name, :region_name, :city_name, :latitude, :longitude])
elsif configuration[:package] == :country
addr = IPAddr.new(query.text).to_i
q = "SELECT country, country_code FROM maxmind_geolite_country
WHERE start_ip_num <= #{addr} AND #{addr} <= end_ip_num"
format_result(q, [:country_name, :country_code2])
end
end
def encode_hash(hash, encoding = "UTF-8")
hash.inject({}) do |h,i|
h[i[0]] = i[1].is_a?(String) ? i[1].encode(encoding) : i[1]
h
end
end
def format_result(query, attr_names)
if r = ActiveRecord::Base.connection.execute(query).first
r = r.values if r.is_a?(Hash) # some db adapters return Hash, some Array
[Hash[*attr_names.zip(r).flatten]]
else
[]
end
end
end
end