linkchecker/linkcheck/geoip.py
2010-09-30 18:44:30 +02:00

81 lines
2.6 KiB
Python

# -*- coding: iso-8859-1 -*-
# Copyright (C) 2000-2010 Bastian Kleineidam
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
"""
Store and retrieve country names for IPs.
"""
import os
import sys
from .lock import get_lock
from .decorators import synchronized
from .strformat import unicode_safe
# It is unknown if the geoip library is already thread-safe, so
# no risks should be taken here by using a lock.
_lock = get_lock("geoip")
def get_geoip_dat ():
"""Find a GeoIP database, preferring city over country lookup."""
datafiles = ("GeoIPCity.dat", "GeoIP.dat")
if os.name == 'nt':
paths = (sys.exec_prefix, r"c:\geoip")
else:
paths = ("/usr/local/share/GeoIP", "/usr/share/GeoIP")
for path in paths:
for datafile in datafiles:
filename = os.path.join(path, datafile)
if os.path.isfile(filename):
return filename
# try importing both the C-library GeoIP and the pure-python pygeoip
geoip_dat = get_geoip_dat()
geoip = None
if geoip_dat:
try:
import GeoIP
geoip = GeoIP.open(geoip_dat, GeoIP.GEOIP_STANDARD)
geoip_error = GeoIP.error
except ImportError:
try:
import pygeoip
geoip = pygeoip.GeoIP(geoip_dat)
geoip_error = pygeoip.GeoIPError
except ImportError:
pass
@synchronized(_lock)
def get_country (host):
"""Get translated country name.
@return: country with optional city or an boolean False if not found
"""
if geoip is None:
# no geoip available
return None
try:
record = geoip.record_by_name(host)
except geoip_error:
# ignore lookup errors
return None
value = u""
if record and record.get("city"):
value += unicode_safe(record["city"])
if record and record.get("country_name"):
if value:
value += u", "
value += unicode_safe(record["country_name"])
return value