import os import socket import geoip2.database from django.conf import settings from django.core.validators import ipv4_re from django.utils import six from django.utils.ipv6 import is_valid_ipv6_address from .resources import City, Country # Creating the settings dictionary with any settings, if needed. GEOIP_SETTINGS = { 'GEOIP_PATH': getattr(settings, 'GEOIP_PATH', None), 'GEOIP_CITY': getattr(settings, 'GEOIP_CITY', 'GeoLite2-City.mmdb'), 'GEOIP_COUNTRY': getattr(settings, 'GEOIP_COUNTRY', 'GeoLite2-Country.mmdb'), } class GeoIP2Exception(Exception): pass class GeoIP2(object): # The flags for GeoIP memory caching. # Try MODE_MMAP_EXT, MODE_MMAP, MODE_FILE in that order. MODE_AUTO = 0 # Use the C extension with memory map. MODE_MMAP_EXT = 1 # Read from memory map. Pure Python. MODE_MMAP = 2 # Read database as standard file. Pure Python. MODE_FILE = 4 # Load database into memory. Pure Python. MODE_MEMORY = 8 cache_options = {opt: None for opt in (0, 1, 2, 4, 8)} # Paths to the city & country binary databases. _city_file = '' _country_file = '' # Initially, pointers to GeoIP file references are NULL. _city = None _country = None def __init__(self, path=None, cache=0, country=None, city=None): """ Initialize the GeoIP object. No parameters are required to use default settings. Keyword arguments may be passed in to customize the locations of the GeoIP datasets. * path: Base directory to where GeoIP data is located or the full path to where the city or country data files (*.mmdb) are located. Assumes that both the city and country data sets are located in this directory; overrides the GEOIP_PATH setting. * cache: The cache settings when opening up the GeoIP datasets. May be an integer in (0, 1, 2, 4, 8) corresponding to the MODE_AUTO, MODE_MMAP_EXT, MODE_MMAP, MODE_FILE, and MODE_MEMORY, `GeoIPOptions` C API settings, respectively. Defaults to 0, meaning MODE_AUTO. * country: The name of the GeoIP country data file. Defaults to 'GeoLite2-Country.mmdb'; overrides the GEOIP_COUNTRY setting. * city: The name of the GeoIP city data file. Defaults to 'GeoLite2-City.mmdb'; overrides the GEOIP_CITY setting. """ # Checking the given cache option. if cache in self.cache_options: self._cache = cache else: raise GeoIP2Exception('Invalid GeoIP caching option: %s' % cache) # Getting the GeoIP data path. if not path: path = GEOIP_SETTINGS['GEOIP_PATH'] if not path: raise GeoIP2Exception('GeoIP path must be provided via parameter or the GEOIP_PATH setting.') if not isinstance(path, six.string_types): raise TypeError('Invalid path type: %s' % type(path).__name__) if os.path.isdir(path): # Constructing the GeoIP database filenames using the settings # dictionary. If the database files for the GeoLite country # and/or city datasets exist, then try to open them. country_db = os.path.join(path, country or GEOIP_SETTINGS['GEOIP_COUNTRY']) if os.path.isfile(country_db): self._country = geoip2.database.Reader(country_db, mode=cache) self._country_file = country_db city_db = os.path.join(path, city or GEOIP_SETTINGS['GEOIP_CITY']) if os.path.isfile(city_db): self._city = geoip2.database.Reader(city_db, mode=cache) self._city_file = city_db elif os.path.isfile(path): # Otherwise, some detective work will be needed to figure out # whether the given database path is for the GeoIP country or city # databases. reader = geoip2.database.Reader(path, mode=cache) db_type = reader.metadata().database_type if db_type.endswith('City'): # GeoLite City database detected. self._city = reader self._city_file = path elif db_type.endswith('Country'): # GeoIP Country database detected. self._country = reader self._country_file = path else: raise GeoIP2Exception('Unable to recognize database edition: %s' % db_type) else: raise GeoIP2Exception('GeoIP path must be a valid file or directory.') @property def _reader(self): if self._country: return self._country else: return self._city @property def _country_or_city(self): if self._country: return self._country.country else: return self._city.city def __del__(self): # Cleanup any GeoIP file handles lying around. if self._reader: self._reader.close() def _check_query(self, query, country=False, city=False, city_or_country=False): "Helper routine for checking the query and database availability." # Making sure a string was passed in for the query. if not isinstance(query, six.string_types): raise TypeError('GeoIP query must be a string, not type %s' % type(query).__name__) # Extra checks for the existence of country and city databases. if city_or_country and not (self._country or self._city): raise GeoIP2Exception('Invalid GeoIP country and city data files.') elif country and not self._country: raise GeoIP2Exception('Invalid GeoIP country data file: %s' % self._country_file) elif city and not self._city: raise GeoIP2Exception('Invalid GeoIP city data file: %s' % self._city_file) # Return the query string back to the caller. GeoIP2 only takes IP addresses. if not (ipv4_re.match(query) or is_valid_ipv6_address(query)): query = socket.gethostbyname(query) return query def city(self, query): """ Return a dictionary of city information for the given IP address or Fully Qualified Domain Name (FQDN). Some information in the dictionary may be undefined (None). """ enc_query = self._check_query(query, city=True) return City(self._city.city(enc_query)) def country_code(self, query): "Return the country code for the given IP Address or FQDN." enc_query = self._check_query(query, city_or_country=True) return self.country(enc_query)['country_code'] def country_name(self, query): "Return the country name for the given IP Address or FQDN." enc_query = self._check_query(query, city_or_country=True) return self.country(enc_query)['country_name'] def country(self, query): """ Return a dictionary with the country code and name when given an IP address or a Fully Qualified Domain Name (FQDN). For example, both '24.124.1.80' and 'djangoproject.com' are valid parameters. """ # Returning the country code and name enc_query = self._check_query(query, city_or_country=True) return Country(self._country_or_city(enc_query)) # #### Coordinate retrieval routines #### def coords(self, query, ordering=('longitude', 'latitude')): cdict = self.city(query) if cdict is None: return None else: return tuple(cdict[o] for o in ordering) def lon_lat(self, query): "Return a tuple of the (longitude, latitude) for the given query." return self.coords(query) def lat_lon(self, query): "Return a tuple of the (latitude, longitude) for the given query." return self.coords(query, ('latitude', 'longitude')) def geos(self, query): "Return a GEOS Point object for the given query." ll = self.lon_lat(query) if ll: from django.contrib.gis.geos import Point return Point(ll, srid=4326) else: return None # #### GeoIP Database Information Routines #### @property def info(self): "Return information about the GeoIP library and databases in use." meta = self._reader.metadata() return 'GeoIP Library:\n\t%s.%s\n' % (meta.binary_format_major_version, meta.binary_format_minor_version) @classmethod def open(cls, full_path, cache): return GeoIP2(full_path, cache)