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Source code for django.contrib.gis.geoip.base

import os
import re
from ctypes import c_char_p

from django.contrib.gis.geoip.libgeoip import GEOIP_SETTINGS
from django.contrib.gis.geoip.prototypes import (
    GeoIP_country_code_by_addr, GeoIP_country_code_by_name,
    GeoIP_country_name_by_addr, GeoIP_country_name_by_name,
    GeoIP_database_info, GeoIP_delete, GeoIP_lib_version, GeoIP_open,
    GeoIP_record_by_addr, GeoIP_record_by_name,
)
from django.core.validators import ipv4_re
from django.utils import six
from django.utils.encoding import force_bytes

# Regular expressions for recognizing the GeoIP free database editions.
free_regex = re.compile(r'^GEO-\d{3}FREE')
lite_regex = re.compile(r'^GEO-\d{3}LITE')


class GeoIPException(Exception):
    pass


[docs]class GeoIP(object): # The flags for GeoIP memory caching. # GEOIP_STANDARD - read database from filesystem, uses least memory. # # GEOIP_MEMORY_CACHE - load database into memory, faster performance # but uses more memory # # GEOIP_CHECK_CACHE - check for updated database. If database has been # updated, reload filehandle and/or memory cache. This option # is not thread safe. # # GEOIP_INDEX_CACHE - just cache the most frequently accessed index # portion of the database, resulting in faster lookups than # GEOIP_STANDARD, but less memory usage than GEOIP_MEMORY_CACHE - # useful for larger databases such as GeoIP Organization and # GeoIP City. Note, for GeoIP Country, Region and Netspeed # databases, GEOIP_INDEX_CACHE is equivalent to GEOIP_MEMORY_CACHE # # GEOIP_MMAP_CACHE - load database into mmap shared memory ( not available # on Windows). GEOIP_STANDARD = 0 GEOIP_MEMORY_CACHE = 1 GEOIP_CHECK_CACHE = 2 GEOIP_INDEX_CACHE = 4 GEOIP_MMAP_CACHE = 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): """ Initializes the GeoIP object, no parameters are required to use default settings. Keyword arguments may be passed in to customize the locations of the GeoIP data sets. * path: Base directory to where GeoIP data is located or the full path to where the city or country data files (*.dat) are located. Assumes that both the city and country data sets are located in this directory; overrides the GEOIP_PATH settings attribute. * cache: The cache settings when opening up the GeoIP datasets, and may be an integer in (0, 1, 2, 4, 8) corresponding to the GEOIP_STANDARD, GEOIP_MEMORY_CACHE, GEOIP_CHECK_CACHE, GEOIP_INDEX_CACHE, and GEOIP_MMAP_CACHE, `GeoIPOptions` C API settings, respectively. Defaults to 0, meaning that the data is read from the disk. * country: The name of the GeoIP country data file. Defaults to 'GeoIP.dat'; overrides the GEOIP_COUNTRY settings attribute. * city: The name of the GeoIP city data file. Defaults to 'GeoLiteCity.dat'; overrides the GEOIP_CITY settings attribute. """ # Checking the given cache option. if cache in self.cache_options: self._cache = cache else: raise GeoIPException('Invalid GeoIP caching option: %s' % cache) # Getting the GeoIP data path. if not path: path = GEOIP_SETTINGS.get('GEOIP_PATH', None) if not path: raise GeoIPException('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 and open them. country_db = os.path.join(path, country or GEOIP_SETTINGS.get('GEOIP_COUNTRY', 'GeoIP.dat')) if os.path.isfile(country_db): self._country = GeoIP_open(force_bytes(country_db), cache) self._country_file = country_db city_db = os.path.join(path, city or GEOIP_SETTINGS.get('GEOIP_CITY', 'GeoLiteCity.dat')) if os.path.isfile(city_db): self._city = GeoIP_open(force_bytes(city_db), 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. ptr = GeoIP_open(force_bytes(path), cache) info = GeoIP_database_info(ptr) if lite_regex.match(info): # GeoLite City database detected. self._city = ptr self._city_file = path elif free_regex.match(info): # GeoIP Country database detected. self._country = ptr self._country_file = path else: raise GeoIPException('Unable to recognize database edition: %s' % info) else: raise GeoIPException('GeoIP path must be a valid file or directory.') def __del__(self): # Cleaning any GeoIP file handles lying around. if GeoIP_delete is None: return if self._country: GeoIP_delete(self._country) if self._city: GeoIP_delete(self._city) 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 GeoIPException('Invalid GeoIP country and city data files.') elif country and not self._country: raise GeoIPException('Invalid GeoIP country data file: %s' % self._country_file) elif city and not self._city: raise GeoIPException('Invalid GeoIP city data file: %s' % self._city_file) # Return the query string back to the caller. GeoIP only takes bytestrings. return force_bytes(query)
[docs] def city(self, query): """ Returns 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) if ipv4_re.match(query): # If an IP address was passed in return GeoIP_record_by_addr(self._city, c_char_p(enc_query)) else: # If a FQDN was passed in.
return GeoIP_record_by_name(self._city, c_char_p(enc_query))
[docs] def country_code(self, query): "Returns the country code for the given IP Address or FQDN." enc_query = self._check_query(query, city_or_country=True) if self._country: if ipv4_re.match(query): return GeoIP_country_code_by_addr(self._country, enc_query) else: return GeoIP_country_code_by_name(self._country, enc_query) else:
return self.city(query)['country_code']
[docs] def country_name(self, query): "Returns the country name for the given IP Address or FQDN." enc_query = self._check_query(query, city_or_country=True) if self._country: if ipv4_re.match(query): return GeoIP_country_name_by_addr(self._country, enc_query) else: return GeoIP_country_name_by_name(self._country, enc_query) else:
return self.city(query)['country_name']
[docs] def country(self, query): """ Returns 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 return {'country_code': self.country_code(query), 'country_name': self.country_name(query),
} # #### Coordinate retrieval routines ####
[docs] 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)
[docs] def lon_lat(self, query): "Returns a tuple of the (longitude, latitude) for the given query."
return self.coords(query)
[docs] def lat_lon(self, query): "Returns a tuple of the (latitude, longitude) for the given query."
return self.coords(query, ('latitude', 'longitude'))
[docs] def geos(self, query): "Returns 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 country_info(self): "Returns information about the GeoIP country database." if self._country is None: ci = 'No GeoIP Country data in "%s"' % self._country_file else: ci = GeoIP_database_info(self._country) return ci @property def city_info(self): "Returns information about the GeoIP city database." if self._city is None: ci = 'No GeoIP City data in "%s"' % self._city_file else: ci = GeoIP_database_info(self._city) return ci @property def info(self): "Returns information about the GeoIP library and databases in use." info = '' if GeoIP_lib_version: info += 'GeoIP Library:\n\t%s\n' % GeoIP_lib_version() return info + 'Country:\n\t%s\nCity:\n\t%s' % (self.country_info, self.city_info) # #### Methods for compatibility w/the GeoIP-Python API. ####
[docs] @classmethod def open(cls, full_path, cache):
return GeoIP(full_path, cache) def _rec_by_arg(self, arg): if self._city: return self.city(arg) else: return self.country(arg) region_by_addr = city region_by_name = city record_by_addr = _rec_by_arg record_by_name = _rec_by_arg country_code_by_addr = country_code country_code_by_name = country_code country_name_by_addr = country_name
country_name_by_name = country_name
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