Class: GeoIP

Inherits:
Object
  • Object
show all
Defined in:
lib/geoip.rb

Defined Under Namespace

Classes: ASN, City, Country

Constant Summary collapse

VERSION =

The GeoIP GEM version number

'1.1.2'
DATA_DIR =

The data/ directory for geoip

File.expand_path(
  File.join(File.dirname(__FILE__), '..', 'data', 'geoip')
)
CountryCode =

Ordered list of the ISO3166 2-character country codes, ordered by GeoIP ID

YAML.load_file(File.join(DATA_DIR, 'country_code.yml'))
CountryCode3 =

Ordered list of the ISO3166 3-character country codes, ordered by GeoIP ID

YAML.load_file(File.join(DATA_DIR, 'country_code3.yml'))
CountryName =

Ordered list of the English names of the countries, ordered by GeoIP ID

YAML.load_file(File.join(DATA_DIR, 'country_name.yml'))
CountryContinent =

Ordered list of the ISO3166 2-character continent code of the countries, ordered by GeoIP ID

YAML.load_file(File.join(DATA_DIR, 'country_continent.yml'))
TimeZone =

Hash of the timezone codes mapped to timezone name, per zoneinfo

YAML.load_file(File.join(DATA_DIR, 'time_zone.yml'))
GEOIP_COUNTRY_EDITION = 
1
GEOIP_CITY_EDITION_REV1 = 
2
GEOIP_REGION_EDITION_REV1 = 
3
GEOIP_ISP_EDITION = 
4
GEOIP_ORG_EDITION = 
5
GEOIP_CITY_EDITION_REV0 = 
6
GEOIP_REGION_EDITION_REV0 = 
7
GEOIP_PROXY_EDITION = 
8
GEOIP_ASNUM_EDITION = 
9
GEOIP_NETSPEED_EDITION = 
10
COUNTRY_BEGIN =

:nodoc:

16_776_960
STATE_BEGIN_REV0 =

:nodoc:

16_700_000
STATE_BEGIN_REV1 =

:nodoc:

16_000_000
STRUCTURE_INFO_MAX_SIZE =

:nodoc:

20
DATABASE_INFO_MAX_SIZE =

:nodoc:

100
MAX_ORG_RECORD_LENGTH =

:nodoc:

300
MAX_ASN_RECORD_LENGTH =

:nodoc: unverified

300
US_OFFSET =

:nodoc:

1
CANADA_OFFSET =

:nodoc:

677
WORLD_OFFSET =

:nodoc:

1353
FIPS_RANGE =

:nodoc:

360
FULL_RECORD_LENGTH =

:nodoc:

50
STANDARD_RECORD_LENGTH =

:nodoc:

3
SEGMENT_RECORD_LENGTH =

:nodoc:

3

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(filename, flags = 0) ⇒ GeoIP

Open the GeoIP database and determine the file format version.

filename is a String holding the path to the GeoIP.dat file options is an integer holding caching flags (unimplemented)



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# File 'lib/geoip.rb', line 136

def initialize(filename, flags = 0)
  @mutex = Mutex.new unless IO.respond_to?(:pread)

  @flags = flags
  @database_type = GEOIP_COUNTRY_EDITION
  @record_length = STANDARD_RECORD_LENGTH
  @file = File.open(filename, 'rb')

  detect_database_type!
end

Instance Attribute Details

#database_type ⇒ Object (readonly) Also known as: databaseType

The Edition number that identifies which kind of database you’ve opened



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# File 'lib/geoip.rb', line 127

def database_type
  @database_type
end

Instance Method Details

#asn(hostname) ⇒ Object

Search a ASN GeoIP database for the specified host, returning the AS number and description.

hostname is a String holding the host’s DNS name or numeric IP address.

Returns the AS number and description.

Source: geolite.maxmind.com/download/geoip/database/asnum/GeoIPASNum.dat.gz



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# File 'lib/geoip.rb', line 283

def asn(hostname)
  ip = lookup_ip(hostname)

  # Convert numeric IP address to an integer
  ipnum = iptonum(ip)

  if (@database_type != GEOIP_ASNUM_EDITION)
    throw "Invalid GeoIP database type, can't look up ASN by IP"
  end

  pos = seek_record(ipnum)
  off = pos + (2 * @record_length - 1) * @database_segments[0]

  record = atomic_read(MAX_ASN_RECORD_LENGTH, off)
  record = record.sub(/\000.*/n, '')

  # AS####, Description
  ASN.new($1, $2) if record =~ /^(AS\d+)\s(.*)$/
end

#city(hostname) ⇒ Object

Search the GeoIP database for the specified host, returning city info.

hostname is a String holding the host’s DNS name or numeric IP address.

Returns a City object with the fourteen elements:

  • The host or IP address string as requested

  • The IP address string after looking up the host

  • The two-character country code (ISO 3166-1 alpha-2)

  • The three-character country code (ISO 3166-2 alpha-3)

  • The ISO 3166 English-language name of the country

  • The two-character continent code

  • The region name (state or territory)

  • The city name

  • The postal code (zipcode)

  • The latitude

  • The longitude

  • The USA dma_code if known (only REV1 City database)

  • The USA area_code if known (only REV1 City database)

  • The timezone name, if known



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# File 'lib/geoip.rb', line 217

def city(hostname)
  ip = lookup_ip(hostname)

  # Convert numeric IP address to an integer
  ipnum = iptonum(ip)

  if @database_type != GEOIP_CITY_EDITION_REV0 &&
     @database_type != GEOIP_CITY_EDITION_REV1
    throw "Invalid GeoIP database type, can't look up City by IP"
  end

  pos = seek_record(ipnum)

  # This next statement was added to MaxMind's C version after it was
  # rewritten in Ruby. It prevents unassigned IP addresses from returning
  # bogus data.  There was concern over whether the changes to an
  # application's behaviour were always correct, but this has been tested
  # using an exhaustive search of the top 16 bits of the IP address space.
  # The records where the change takes effect contained *no* valid data.
  # If you're concerned, email me, and I'll send you the test program so
  # you can test whatever IP range you think is causing problems,
  # as I don't care to undertake an exhaustive search of the 32-bit space.
  if pos != @database_segments[0]
    read_city(pos, hostname, ip)
  end
end

#country(hostname) ⇒ Object

Search the GeoIP database for the specified host, returning country info.

hostname is a String holding the host’s DNS name or numeric IP address.

If the database is a City database (normal), return the result that city would return.

Otherwise, return a Country object with the seven elements:

  • The host or IP address string as requested

  • The IP address string after looking up the host

  • The GeoIP country-ID as an integer (N.B. this is excluded from the city results!)

  • The two-character country code (ISO 3166-1 alpha-2)

  • The three-character country code (ISO 3166-2 alpha-3)

  • The ISO 3166 English-language name of the country

  • The two-character continent code



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# File 'lib/geoip.rb', line 166

def country(hostname)
  if @database_type == GEOIP_CITY_EDITION_REV0 ||
     @database_type == GEOIP_CITY_EDITION_REV1
    return city(hostname)
  end

  ip = lookup_ip(hostname)

  # Convert numeric IP address to an integer
  ipnum = iptonum(ip)

  if @database_type != GEOIP_COUNTRY_EDITION &&
     @database_type != GEOIP_PROXY_EDITION &&
     @database_type != GEOIP_NETSPEED_EDITION
    throw "Invalid GeoIP database type, can't look up Country by IP"
  end

  code = (seek_record(ipnum) - COUNTRY_BEGIN)

  Country.new(
    hostname,                   # Requested hostname
    ip,                         # Ip address as dotted quad
    code,                       # GeoIP's country code
    CountryCode[code],          # ISO3166-1 alpha-2 code
    CountryCode3[code],         # ISO3166-2 alpha-3 code
    CountryName[code],          # Country name, per ISO 3166
    CountryContinent[code]      # Continent code.
  )
end

#each ⇒ Object

Iterate through a GeoIP city database



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# File 'lib/geoip.rb', line 314

def each
  return enum_for unless block_given?

  if @database_type != GEOIP_CITY_EDITION_REV0 &&
     @database_type != GEOIP_CITY_EDITION_REV1
    throw "Invalid GeoIP database type, can't iterate thru non-City database"
  end

  @iter_pos = @database_segments[0] + 1
  num = 0

  until (rec = read_city(@iter_pos)).nil?
    yield rec
    print "#{num}: #{@iter_pos}\n" if ((num += 1) % 1000) == 0
  end

  @iter_pos = nil
  self
end

#isp(hostname) ⇒ Object Also known as: organization

Search a ISP GeoIP database for the specified host, returning the ISP Not all GeoIP databases contain ISP information. Check maxmind.com

hostname is a String holding the host’s DNS name or numeric IP address.

Returns the ISP name.



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# File 'lib/geoip.rb', line 253

def isp(hostname)
  ip = lookup_ip(hostname)

  # Convert numeric IP address to an integer
  ipnum = iptonum(ip)

  if @database_type != GEOIP_ISP_EDITION &&
      @database_type != GEOIP_ORG_EDITION
    throw "Invalid GeoIP database type, can't look up Organization/ISP by IP"
  end

  pos = seek_record(ipnum)
  off = pos + (2 * @record_length - 1) * @database_segments[0]

  record = atomic_read(MAX_ORG_RECORD_LENGTH, off)
  record = record.sub(/\000.*/n, '')
  record
end