path: root/python/samba/tests/samba_tool/dnscmd.py

# Unix SMB/CIFS implementation.
# Copyright (C) Andrew Bartlett <abartlet@catalyst.net.nz>
#
# 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 os
import ldb
import re

from samba.ndr import ndr_unpack, ndr_pack
from samba.dcerpc import dnsp
from samba.tests.samba_tool.base import SambaToolCmdTest
import time
from samba import dsdb_dns


class DnsCmdTestCase(SambaToolCmdTest):
    def setUp(self):
        super().setUp()

        self.dburl = "ldap://%s" % os.environ["SERVER"]
        self.creds_string = "-U%s%%%s" % (os.environ["DC_USERNAME"],
                                          os.environ["DC_PASSWORD"])

        self.samdb = self.getSamDB("-H", self.dburl, self.creds_string)
        self.config_dn = str(self.samdb.get_config_basedn())

        self.testip = "192.168.0.193"
        self.testip2 = "192.168.0.194"

        self.addCleanup(self.deleteZone)
        self.addZone()

        # Note: SOA types don't work (and shouldn't), as we only have one zone per DNS record.

        good_dns = ["SAMDOM.EXAMPLE.COM",
                    "1.EXAMPLE.COM",
                    "%sEXAMPLE.COM" % ("1." * 100),
                    "EXAMPLE",
                    "!@#$%^&*()_",
                    "HIGH\xFFBYTE",
                    "@.EXAMPLE.COM",
                    "."]
        bad_dns = ["...",
                   ".EXAMPLE.COM",
                   ".EXAMPLE.",
                   "",
                   "SAMDOM..EXAMPLE.COM"]

        good_mx = ["SAMDOM.EXAMPLE.COM 65530",
                   "SAMDOM.EXAMPLE.COM     0"]
        bad_mx = ["SAMDOM.EXAMPLE.COM -1",
                  "SAMDOM.EXAMPLE.COM",
                  " ",
                  "SAMDOM.EXAMPLE.COM 1 1",
                  "SAMDOM.EXAMPLE.COM SAMDOM.EXAMPLE.COM"]

        good_srv = ["SAMDOM.EXAMPLE.COM 65530 65530 65530",
                    "SAMDOM.EXAMPLE.COM     1     1     1"]
        bad_srv = ["SAMDOM.EXAMPLE.COM 0 65536 0",
                   "SAMDOM.EXAMPLE.COM 0 0 65536",
                   "SAMDOM.EXAMPLE.COM 65536 0 0"]

        for bad_dn in bad_dns:
            bad_mx.append("%s 1" % bad_dn)
            bad_srv.append("%s 0 0 0" % bad_dn)
        for good_dn in good_dns:
            good_mx.append("%s 1" % good_dn)
            good_srv.append("%s 0 0 0" % good_dn)

        self.good_records = {
                "A":["192.168.0.1", "255.255.255.255"],
                "AAAA":["1234:5678:9ABC:DEF0:0000:0000:0000:0000",
                        "0000:0000:0000:0000:0000:0000:0000:0000",
                        "1234:5678:9ABC:DEF0:1234:5678:9ABC:DEF0",
                        "1234:1234:1234::",
                        "1234:5678:9ABC:DEF0::",
                        "0000:0000::0000",
                        "1234::5678:9ABC:0000:0000:0000:0000",
                        "::1",
                        "::",
                        "1:1:1:1:1:1:1:1"],
                "PTR": good_dns,
                "CNAME": good_dns,
                "NS": good_dns,
                "MX": good_mx,
                "SRV": good_srv,
                "TXT": ["text", "", "@#!", "\n"]
        }

        self.bad_records = {
                "A":["192.168.0.500",
                     "255.255.255.255/32"],
                "AAAA":["GGGG:1234:5678:9ABC:0000:0000:0000:0000",
                        "0000:0000:0000:0000:0000:0000:0000:0000/1",
                        "AAAA:AAAA:AAAA:AAAA:G000:0000:0000:1234",
                        "1234:5678:9ABC:DEF0:1234:5678:9ABC:DEF0:1234",
                        "1234:5678:9ABC:DEF0:1234:5678:9ABC",
                        "1111::1111::1111"],
                "PTR": bad_dns,
                "CNAME": bad_dns,
                "NS": bad_dns,
                "MX": bad_mx,
                "SRV": bad_srv
        }

    def resetZone(self):
        self.deleteZone()
        self.addZone()

    def addZone(self):
        self.zone = "zone"
        result, out, err = self.runsubcmd("dns",
                                          "zonecreate",
                                          os.environ["SERVER"],
                                          self.zone,
                                          self.creds_string)
        self.assertCmdSuccess(result, out, err)

    def deleteZone(self):
        result, out, err = self.runsubcmd("dns",
                                          "zonedelete",
                                          os.environ["SERVER"],
                                          self.zone,
                                          self.creds_string)
        self.assertCmdSuccess(result, out, err)

    def get_all_records(self, zone_name):
        zone_dn = (f"DC={zone_name},CN=MicrosoftDNS,DC=DomainDNSZones,"
                   f"{self.samdb.get_default_basedn()}")

        expression = "(&(objectClass=dnsNode)(!(dNSTombstoned=TRUE)))"

        nodes = self.samdb.search(base=zone_dn, scope=ldb.SCOPE_SUBTREE,
                                  expression=expression,
                                  attrs=["dnsRecord", "name"])

        record_map = {}
        for node in nodes:
            name = node["name"][0].decode()
            record_map[name] = list(node["dnsRecord"])

        return record_map

    def get_record_from_db(self, zone_name, record_name):
        zones = self.samdb.search(base="DC=DomainDnsZones,%s"
                                  % self.samdb.get_default_basedn(),
                                  scope=ldb.SCOPE_SUBTREE,
                                  expression="(objectClass=dnsZone)",
                                  attrs=["cn"])

        for zone in zones:
            if zone_name in str(zone.dn):
                zone_dn = zone.dn
                break

        records = self.samdb.search(base=zone_dn, scope=ldb.SCOPE_SUBTREE,
                                    expression="(objectClass=dnsNode)",
                                    attrs=["dnsRecord"])

        for old_packed_record in records:
            if record_name in str(old_packed_record.dn):
                return (old_packed_