241 lines
8.7 KiB
Python
241 lines
8.7 KiB
Python
import socket
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import geoip2.database
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from django.conf import settings
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from django.core.exceptions import ValidationError
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from django.core.validators import validate_ipv46_address
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from django.utils._os import to_path
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from .resources import City, Country
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# Creating the settings dictionary with any settings, if needed.
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GEOIP_SETTINGS = {
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"GEOIP_PATH": getattr(settings, "GEOIP_PATH", None),
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"GEOIP_CITY": getattr(settings, "GEOIP_CITY", "GeoLite2-City.mmdb"),
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"GEOIP_COUNTRY": getattr(settings, "GEOIP_COUNTRY", "GeoLite2-Country.mmdb"),
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}
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class GeoIP2Exception(Exception):
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pass
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class GeoIP2:
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# The flags for GeoIP memory caching.
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# Try MODE_MMAP_EXT, MODE_MMAP, MODE_FILE in that order.
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MODE_AUTO = 0
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# Use the C extension with memory map.
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MODE_MMAP_EXT = 1
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# Read from memory map. Pure Python.
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MODE_MMAP = 2
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# Read database as standard file. Pure Python.
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MODE_FILE = 4
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# Load database into memory. Pure Python.
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MODE_MEMORY = 8
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cache_options = frozenset(
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(MODE_AUTO, MODE_MMAP_EXT, MODE_MMAP, MODE_FILE, MODE_MEMORY)
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)
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# Paths to the city & country binary databases.
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_city_file = ""
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_country_file = ""
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# Initially, pointers to GeoIP file references are NULL.
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_city = None
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_country = None
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def __init__(self, path=None, cache=0, country=None, city=None):
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"""
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Initialize the GeoIP object. No parameters are required to use default
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settings. Keyword arguments may be passed in to customize the locations
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of the GeoIP datasets.
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* path: Base directory to where GeoIP data is located or the full path
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to where the city or country data files (*.mmdb) are located.
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Assumes that both the city and country data sets are located in
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this directory; overrides the GEOIP_PATH setting.
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* cache: The cache settings when opening up the GeoIP datasets. May be
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an integer in (0, 1, 2, 4, 8) corresponding to the MODE_AUTO,
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MODE_MMAP_EXT, MODE_MMAP, MODE_FILE, and MODE_MEMORY,
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`GeoIPOptions` C API settings, respectively. Defaults to 0,
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meaning MODE_AUTO.
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* country: The name of the GeoIP country data file. Defaults to
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'GeoLite2-Country.mmdb'; overrides the GEOIP_COUNTRY setting.
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* city: The name of the GeoIP city data file. Defaults to
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'GeoLite2-City.mmdb'; overrides the GEOIP_CITY setting.
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"""
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# Checking the given cache option.
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if cache not in self.cache_options:
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raise GeoIP2Exception("Invalid GeoIP caching option: %s" % cache)
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# Getting the GeoIP data path.
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path = path or GEOIP_SETTINGS["GEOIP_PATH"]
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if not path:
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raise GeoIP2Exception(
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"GeoIP path must be provided via parameter or the GEOIP_PATH setting."
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)
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path = to_path(path)
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if path.is_dir():
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# Constructing the GeoIP database filenames using the settings
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# dictionary. If the database files for the GeoLite country
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# and/or city datasets exist, then try to open them.
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country_db = path / (country or GEOIP_SETTINGS["GEOIP_COUNTRY"])
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if country_db.is_file():
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self._country = geoip2.database.Reader(str(country_db), mode=cache)
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self._country_file = country_db
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city_db = path / (city or GEOIP_SETTINGS["GEOIP_CITY"])
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if city_db.is_file():
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self._city = geoip2.database.Reader(str(city_db), mode=cache)
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self._city_file = city_db
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if not self._reader:
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raise GeoIP2Exception("Could not load a database from %s." % path)
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elif path.is_file():
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# Otherwise, some detective work will be needed to figure out
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# whether the given database path is for the GeoIP country or city
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# databases.
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reader = geoip2.database.Reader(str(path), mode=cache)
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db_type = reader.metadata().database_type
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if "City" in db_type:
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# GeoLite City database detected.
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self._city = reader
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self._city_file = path
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elif "Country" in db_type:
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# GeoIP Country database detected.
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self._country = reader
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self._country_file = path
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else:
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raise GeoIP2Exception(
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"Unable to recognize database edition: %s" % db_type
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)
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else:
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raise GeoIP2Exception("GeoIP path must be a valid file or directory.")
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@property
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def _reader(self):
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return self._country or self._city
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@property
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def _country_or_city(self):
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if self._country:
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return self._country.country
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else:
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return self._city.city
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def __del__(self):
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# Cleanup any GeoIP file handles lying around.
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if self._reader:
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self._reader.close()
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def __repr__(self):
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meta = self._reader.metadata()
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version = "[v%s.%s]" % (
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meta.binary_format_major_version,
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meta.binary_format_minor_version,
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)
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return (
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'<%(cls)s %(version)s _country_file="%(country)s", _city_file="%(city)s">'
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% {
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"cls": self.__class__.__name__,
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"version": version,
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"country": self._country_file,
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"city": self._city_file,
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}
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)
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def _check_query(self, query, city=False, city_or_country=False):
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"Check the query and database availability."
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# Making sure a string was passed in for the query.
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if not isinstance(query, str):
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raise TypeError(
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"GeoIP query must be a string, not type %s" % type(query).__name__
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)
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# Extra checks for the existence of country and city databases.
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if city_or_country and not (self._country or self._city):
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raise GeoIP2Exception("Invalid GeoIP country and city data files.")
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elif city and not self._city:
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raise GeoIP2Exception("Invalid GeoIP city data file: %s" % self._city_file)
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# Return the query string back to the caller. GeoIP2 only takes IP addresses.
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try:
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validate_ipv46_address(query)
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except ValidationError:
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query = socket.gethostbyname(query)
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return query
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def city(self, query):
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"""
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Return a dictionary of city information for the given IP address or
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Fully Qualified Domain Name (FQDN). Some information in the dictionary
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may be undefined (None).
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"""
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enc_query = self._check_query(query, city=True)
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return City(self._city.city(enc_query))
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def country_code(self, query):
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"Return the country code for the given IP Address or FQDN."
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return self.country(query)["country_code"]
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def country_name(self, query):
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"Return the country name for the given IP Address or FQDN."
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return self.country(query)["country_name"]
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def country(self, query):
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"""
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Return a dictionary with the country code and name when given an
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IP address or a Fully Qualified Domain Name (FQDN). For example, both
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'24.124.1.80' and 'djangoproject.com' are valid parameters.
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"""
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# Returning the country code and name
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enc_query = self._check_query(query, city_or_country=True)
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return Country(self._country_or_city(enc_query))
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# #### Coordinate retrieval routines ####
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def coords(self, query, ordering=("longitude", "latitude")):
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cdict = self.city(query)
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if cdict is None:
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return None
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else:
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return tuple(cdict[o] for o in ordering)
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def lon_lat(self, query):
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"Return a tuple of the (longitude, latitude) for the given query."
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return self.coords(query)
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def lat_lon(self, query):
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"Return a tuple of the (latitude, longitude) for the given query."
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return self.coords(query, ("latitude", "longitude"))
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def geos(self, query):
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"Return a GEOS Point object for the given query."
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ll = self.lon_lat(query)
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if ll:
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# Allows importing and using GeoIP2() when GEOS is not installed.
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from django.contrib.gis.geos import Point
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return Point(ll, srid=4326)
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else:
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return None
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# #### GeoIP Database Information Routines ####
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@property
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def info(self):
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"Return information about the GeoIP library and databases in use."
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meta = self._reader.metadata()
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return "GeoIP Library:\n\t%s.%s\n" % (
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meta.binary_format_major_version,
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meta.binary_format_minor_version,
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)
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@classmethod
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def open(cls, full_path, cache):
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return GeoIP2(full_path, cache)
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