JezK
Edit File: dns_invalid.py
# Unix SMB/CIFS implementation. # Copyright (C) Kai Blin <kai@samba.org> 2018 # # 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 3 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, see <http://www.gnu.org/licenses/>. # import sys from samba import credentials from samba.dcerpc import dns from samba.tests.subunitrun import SubunitOptions, TestProgram from samba.tests.dns_base import DNSTest import samba.getopt as options import optparse parser = optparse.OptionParser("dns_invalid.py <server ip> [options]") sambaopts = options.SambaOptions(parser) parser.add_option_group(sambaopts) # This timeout only has relevance when testing against Windows # Format errors tend to return patchy responses, so a timeout is needed. parser.add_option("--timeout", type="int", dest="timeout", help="Specify timeout for DNS requests") # use command line creds if available credopts = options.CredentialsOptions(parser) parser.add_option_group(credopts) subunitopts = SubunitOptions(parser) parser.add_option_group(subunitopts) opts, args = parser.parse_args() lp = sambaopts.get_loadparm() creds = credopts.get_credentials(lp) timeout = opts.timeout if len(args) < 1: parser.print_usage() sys.exit(1) server_ip = args[0] creds.set_krb_forwardable(credentials.NO_KRB_FORWARDABLE) class TestBrokenQueries(DNSTest): def setUp(self): super(TestBrokenQueries, self).setUp() global server, server_ip, lp, creds, timeout self.server_ip = server_ip self.lp = lp self.creds = creds self.timeout = timeout def test_invalid_chars_in_name(self): """Check the server refuses invalid characters in the query name""" p = self.make_name_packet(dns.DNS_OPCODE_QUERY) questions = [] name = "\x10\x11\x05\xa8.%s" % self.get_dns_domain() q = self.make_name_question(name, dns.DNS_QTYPE_A, dns.DNS_QCLASS_IN) print("asking for %s" % (q.name)) questions.append(q) self.finish_name_packet(p, questions) (response, response_packet) = self.dns_transaction_udp(p, host=server_ip) self.assert_dns_rcode_equals(response, dns.DNS_RCODE_NXDOMAIN) TestProgram(module=__name__, opts=subunitopts)