Adding upstream version 2:4.20.0+dfsg.upstream/2%4.20.0+dfsg

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 250 insertions, 0 deletions

diff --git a/python/samba/netcmd/domain/level.py b/python/samba/netcmd/domain/level.py
new file mode 100644
index 0000000..eefe360
--- /dev/null
+++ b/python/samba/netcmd/domain/level.py
@@ -0,0 +1,250 @@
+# domain management - domain level
+#
+# Copyright Matthias Dieter Wallnoefer 2009
+# Copyright Andrew Kroeger 2009
+# Copyright Jelmer Vernooij 2007-2012
+# Copyright Giampaolo Lauria 2011
+# Copyright Matthieu Patou <mat@matws.net> 2011
+# Copyright Andrew Bartlett 2008-2015
+# Copyright Stefan Metzmacher 2012
+#
+# 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 ldb
+import samba.getopt as options
+from samba.auth import system_session
+from samba.dsdb import check_and_update_fl, DS_DOMAIN_FUNCTION_2000
+from samba.netcmd import Command, CommandError, Option
+from samba.samdb import SamDB
+
+from samba import functional_level
+
+
+class cmd_domain_level(Command):
+    """Raise domain and forest function levels."""
+
+    synopsis = "%prog (show|raise <options>) [options]"
+
+    takes_optiongroups = {
+        "sambaopts": options.SambaOptions,
+        "credopts": options.CredentialsOptions,
+        "versionopts": options.VersionOptions,
+    }
+
+    takes_options = [
+        Option("-H", "--URL", help="LDB URL for database or target server", type=str,
+               metavar="URL", dest="H"),
+        Option("-q", "--quiet", help="Be quiet", action="store_true"),  # unused
+        Option("--forest-level", type="choice", choices=["2003", "2008", "2008_R2", "2012", "2012_R2", "2016"],
+               help="The forest function level (2003 | 2008 | 2008_R2 | 2012 | 2012_R2 | 2016)"),
+        Option("--domain-level", type="choice", choices=["2003", "2008", "2008_R2", "2012", "2012_R2", "2016"],
+               help="The domain function level (2003 | 2008 | 2008_R2 | 2012 | 2012_R2 | 2016)")
+    ]
+
+    takes_args = ["subcommand"]
+
+    def run(self, subcommand, H=None, forest_level=None, domain_level=None,
+            quiet=False, credopts=None, sambaopts=None, versionopts=None):
+        if subcommand not in ["show", "raise"]:
+            raise CommandError("invalid argument: '%s' (choose from 'show', 'raise')" % subcommand)
+
+        lp = sambaopts.get_loadparm()
+        creds = credopts.get_credentials(lp, fallback_machine=True)
+
+        samdb = SamDB(url=H, session_info=system_session(),
+                      credentials=creds, lp=lp)
+
+        domain_dn = samdb.domain_dn()
+
+        in_transaction = False
+        if subcommand == "raise" and (H is None or not H.startswith("ldap")):
+            samdb.transaction_start()
+            in_transaction = True
+            try:
+                check_and_update_fl(samdb, lp)
+            except Exception as e:
+                samdb.transaction_cancel()
+                raise e
+
+        try:
+            res_forest = samdb.search("CN=Partitions,%s" % samdb.get_config_basedn(),
+                                      scope=ldb.SCOPE_BASE, attrs=["msDS-Behavior-Version"])
+            assert len(res_forest) == 1
+
+            res_domain = samdb.search(domain_dn, scope=ldb.SCOPE_BASE,
+                                      attrs=["msDS-Behavior-Version", "nTMixedDomain"])
+            assert len(res_domain) == 1
+
+            res_domain_cross = samdb.search("CN=Partitions,%s" % samdb.get_config_basedn(),
+                                            scope=ldb.SCOPE_SUBTREE,
+                                            expression="(&(objectClass=crossRef)(nCName=%s))" % domain_dn,
+                                            attrs=["msDS-Behavior-Version"])
+            assert len(res_domain_cross) == 1
+
+            res_dc_s = samdb.search("CN=Sites,%s" % samdb.get_config_basedn(),
+                                    scope=ldb.SCOPE_SUBTREE, expression="(objectClass=nTDSDSA)",
+                                    attrs=["msDS-Behavior-Version"])
+            assert len(res_dc_s) >= 1
+
+            # default values, since "msDS-Behavior-Version" does not exist on Windows 2000 AD
+            level_forest = DS_DOMAIN_FUNCTION_2000
+            level_domain = DS_DOMAIN_FUNCTION_2000
+
+            if "msDS-Behavior-Version" in res_forest[0]:
+                level_forest = int(res_forest[0]["msDS-Behavior-Version"][0])
+            if "msDS-Behavior-Version" in res_domain[0]:
+                level_domain = int(res_domain[0]["msDS-Behavior-Version"][0])
+            level_domain_mixed = int(res_domain[0]["nTMixedDomain"][0])
+
+            min_level_dc = None
+            for msg in res_dc_s:
+                if "msDS-Behavior-Version" in msg:
+                    if min_level_dc is None or int(msg["msDS-Behavior-Version"][0]) < min_level_dc:
+                        min_level_dc = int(msg["msDS-Behavior-Version"][0])
+                else:
+                    min_level_dc = DS_DOMAIN_FUNCTION_2000
+                    # well, this is the least
+                    break
+
+            if level_forest < DS_DOMAIN_FUNCTION_2000 or level_domain < DS_DOMAIN_FUNCTION_2000:
+                raise CommandError("Domain and/or forest function level(s) is/are invalid. Correct them or reprovision!")
+            if min_level_dc < DS_DOMAIN_FUNCTION_2000:
+                raise CommandError("Lowest function level of a DC is invalid. Correct this or reprovision!")
+            if level_forest > level_domain:
+                raise CommandError("Forest function level is higher than the domain level(s). Correct this or reprovision!")
+            if level_domain > min_level_dc:
+                raise CommandError("Domain function level is higher than the lowest function level of a DC. Correct this or reprovision!")
+        except Exception as e:
+            if in_transaction:
+                samdb.transaction_cancel()
+            raise e
+
+        def do_show():
+            self.message("Domain and forest function level for domain '%s'" % domain_dn)
+            if level_forest == DS_DOMAIN_FUNCTION_2000 and level_domain_mixed != 0:
+                self.message("\nATTENTION: You run SAMBA 4 on a forest function level lower than Windows 2000 (Native). This isn't supported! Please raise!")
+            if level_domain == DS_DOMAIN_FUNCTION_2000 and level_domain_mixed != 0:
+                self.message("\nATTENTION: You run SAMBA 4 on a domain function level lower than Windows 2000 (Native). This isn't supported! Please raise!")
+            if min_level_dc == DS_DOMAIN_FUNCTION_2000 and level_domain_mixed != 0:
+                self.message("\nATTENTION: You run SAMBA 4 on a lowest function level of a DC lower than Windows 2003. This isn't supported! Please step-up or upgrade the concerning DC(s)!")
+
+            self.message("")
+
+            outstr = functional_level.level_to_string(level_forest)
+            self.message("Forest function level: (Windows) " + outstr)
+
+            if level_domain == DS_DOMAIN_FUNCTION_2000 and level_domain_mixed:
+                outstr = "2000 mixed (NT4 DC support)"
+            else:
+                outstr = functional_level.level_to_string(level_domain)
+            self.message("Domain function level: (Windows) " + outstr)
+
+            outstr = functional_level.level_to_string(min_level_dc)
+            self.message("Lowest function level of a DC: (Windows) " + outstr)
+
+        def do_raise():
+            msgs = []
+
+            current_level_domain = level_domain
+
+            if domain_level is not None:
+                try:
+                    new_level_domain = functional_level.string_to_level(domain_level)
+                except KeyError:
+                    raise CommandError(f"New functional level '{domain_level}' is not known to Samba as an AD functional level")
+
+                if new_level_domain <= level_domain and level_domain_mixed == 0:
+                    raise CommandError("Domain function level can't be smaller than or equal to the actual one!")
+                if new_level_domain > min_level_dc:
+                    raise CommandError("Domain function level can't be higher than the lowest function level of a DC!")
+
+                # Deactivate mixed/interim domain support
+                if level_domain_mixed != 0:
+                    # Directly on the base DN
+                    m = ldb.Message()
+                    m.dn = ldb.Dn(samdb, domain_dn)
+                    m["nTMixedDomain"] = ldb.MessageElement("0",
+                                                            ldb.FLAG_MOD_REPLACE, "nTMixedDomain")
+                    samdb.modify(m)
+                    # Under partitions
+                    m = ldb.Message()
+                    m.dn = res_domain_cross[0].dn
+                    m["nTMixedDomain"] = ldb.MessageElement("0",
+                                                            ldb.FLAG_MOD_REPLACE, "nTMixedDomain")
+                    try:
+                        samdb.modify(m)
+                    except ldb.LdbError as e:
+                        (enum, emsg) = e.args
+                        if enum != ldb.ERR_UNWILLING_TO_PERFORM:
+                            raise
+
+                # Directly on the base DN
+                m = ldb.Message()
+                m.dn = ldb.Dn(samdb, domain_dn)
+                m["msDS-Behavior-Version"] = ldb.MessageElement(
+                    str(new_level_domain), ldb.FLAG_MOD_REPLACE,
+                    "msDS-Behavior-Version")
+                samdb.modify(m)
+                # Under partitions
+                m = ldb.Message()
+                m.dn = res_domain_cross[0].dn
+                m["msDS-Behavior-Version"] = ldb.MessageElement(
+                    str(new_level_domain), ldb.FLAG_MOD_REPLACE,
+                    "msDS-Behavior-Version")
+                try:
+                    samdb.modify(m)
+                except ldb.LdbError as e2:
+                    (enum, emsg) = e2.args
+                    if enum != ldb.ERR_UNWILLING_TO_PERFORM:
+                        raise
+
+                current_level_domain = new_level_domain
+                msgs.append("Domain function level changed!")
+
+            if forest_level is not None:
+                new_level_forest = functional_level.string_to_level(forest_level)
+
+                if new_level_forest <= level_forest:
+                    raise CommandError("Forest function level can't be smaller than or equal to the actual one!")
+                if new_level_forest > current_level_domain:
+                    raise CommandError("Forest function level can't be higher than the domain function level(s). Please raise it/them first!")
+
+                m = ldb.Message()
+                m.dn = ldb.Dn(samdb, "CN=Partitions,%s" % samdb.get_config_basedn())
+                m["msDS-Behavior-Version"] = ldb.MessageElement(
+                    str(new_level_forest), ldb.FLAG_MOD_REPLACE,
+                    "msDS-Behavior-Version")
+                samdb.modify(m)
+                msgs.append("Forest function level changed!")
+            msgs.append("All changes applied successfully!")
+            self.message("\n".join(msgs))
+            return
+
+        if subcommand == "show":
+            assert not in_transaction
+            do_show()
+            return
+        elif subcommand == "raise":
+            try:
+                do_raise()
+            except Exception as e:
+                if in_transaction:
+                    samdb.transaction_cancel()
+                raise e
+            if in_transaction:
+                samdb.transaction_commit()
+            return
+
+        raise AssertionError("Internal Error subcommand[%s] not handled" % subcommand)