97 lines
2.7 KiB
Python
97 lines
2.7 KiB
Python
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#!/usr/bin/python3.8
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import getopt
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import sys
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try:
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import geoip2.database
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except ImportError:
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print(
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"Required module geoip2.database not found. On Gentoo Linux, please install dev-python/geoip2 from the 'fritteli' overlay.",
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file=sys.stderr)
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exit(1)
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class LookupException(Exception):
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"""
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General Exception class that is raised if anything goes wrong.
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"""
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pass
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def get_county_code(ipaddress, dbfile):
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"""
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Determine the country code that the given ipaddress comes from.
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:param ipaddress: The IP address to look up
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:param dbfile: The path to the GeoIP2/GeoLite2 database file (Country or City database)
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:return: The ISO country code (2 letters)
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"""
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if not ipaddress:
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raise LookupException("No address given")
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if not dbfile:
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raise LookupException("No db file given")
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reader = None
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try:
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reader = geoip2.database.Reader(dbfile)
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dbtype = reader.metadata().database_type
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country = None
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if dbtype == 'GeoLite2-City' or dbtype == 'GeoIP2-City':
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country = reader.city(ipaddress).country
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elif dbfile == 'GeoLite2-Country' or dbtype == 'GeoIP2-Country':
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country = reader.country(ipaddress).country
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# ASN is not supported
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# elif dbfile == 'GeoLite2-ASN' or dbtype == 'GeoIP2-ASN':
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if not country:
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raise LookupException("Unsupported DB type: " + dbtype)
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return country.iso_code
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finally:
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if reader:
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reader.close()
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def parse_command_line(argv):
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"""
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Parse the command line. First, the database file must be specified ("-f /path/to/db/file.mmdb"), then the IP address
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to look up
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:param argv:
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:return:
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"""
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dbfile = None
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try:
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opts, args = getopt.getopt(argv, "f:")
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except getopt.GetoptError as e:
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raise LookupException("Error parsing command line") from e
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for opt, arg in opts:
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if opt == "-f":
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dbfile = arg
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else:
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raise LookupException("Unknown command line argument")
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if len(args) == 0:
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raise LookupException("No address given on command line")
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return dbfile, args[0]
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def main(argv):
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"""
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Read the database file and the IP address from the command line and print the corresponding ISO country code on
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stdout.
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:param argv: Format: "-f /path/to/database.mmdb ip.v4.add.ress"
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:return:
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"""
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(dbfile, ipaddress) = parse_command_line(argv)
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code = get_county_code(ipaddress, dbfile)
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print(code)
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if __name__ == '__main__':
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try:
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main(sys.argv[1:])
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except BaseException as e:
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print("Usage: geoip-lookup.py -f /path/to/geoip2-database.mmdb 192.168.1.1", file=sys.stderr)
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raise e
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