lib/geocoder/lookups/maxmind.rb
require 'geocoder/lookups/base'
require 'geocoder/results/maxmind'
require 'csv'
module Geocoder::Lookup
class Maxmind < Base
def name
"MaxMind"
end
private # ---------------------------------------------------------------
def base_query_url(query)
"#{protocol}://geoip.maxmind.com/#{service_code}?"
end
##
# Return the name of the configured service, or raise an exception.
#
def configured_service!
if s = configuration[:service] and services.keys.include?(s)
return s
else
raise(
Geocoder::ConfigurationError,
"When using MaxMind you MUST specify a service name: " +
"Geocoder.configure(:maxmind => {:service => ...}), " +
"where '...' is one of: #{services.keys.inspect}"
)
end
end
def service_code
services[configured_service!]
end
def service_response_fields_count
Geocoder::Result::Maxmind.field_names[configured_service!].size
end
def data_contains_error?(parsed_data)
# if all fields given then there is an error
parsed_data.size == service_response_fields_count and !parsed_data.last.nil?
end
##
# Service names mapped to code used in URL.
#
def services
{
:country => "a",
:city => "b",
:city_isp_org => "f",
:omni => "e"
}
end
def results(query)
# don't look up a loopback or private address, just return the stored result
return [reserved_result] if query.internal_ip_address?
doc = fetch_data(query)
if doc and doc.is_a?(Array)
if !data_contains_error?(doc)
return [doc]
elsif doc.last == "INVALID_LICENSE_KEY"
raise_error(Geocoder::InvalidApiKey) || Geocoder.log(:warn, "Invalid MaxMind API key.")
end
end
return []
end
def parse_raw_data(raw_data)
# Maxmind just returns text/plain as csv format but according to documentation,
# we get ISO-8859-1 encoded string. We need to convert it.
CSV.parse_line raw_data.force_encoding("ISO-8859-1").encode("UTF-8")
end
def reserved_result
",,,,0,0,0,0,,,".split(",")
end
def query_url_params(query)
{
:l => configuration.api_key,
:i => query.sanitized_text
}.merge(super)
end
end
end