X-Git-Url: http://git.samba.org/?a=blobdiff_plain;f=source4%2Fscripting%2Fpython%2Fsamba%2Fupgrade.py;h=13d33c14422b5ee739ed7a1887a20e69c6823c92;hb=b3413711e12c1357cb63cdbdaa250786f9119032;hp=01b62ff984050abf54b0b671b47d989803e24d97;hpb=e4165448d778db1721b1c7670b25ae3e40917d86;p=samba.git
diff --git a/source4/scripting/python/samba/upgrade.py b/source4/scripting/python/samba/upgrade.py
index 01b62ff9840..13d33c14422 100644
--- a/source4/scripting/python/samba/upgrade.py
+++ b/source4/scripting/python/samba/upgrade.py
@@ -1,172 +1,333 @@
-#!/usr/bin/python
+# backend code for upgrading from Samba3
+# Copyright Jelmer Vernooij 2005-2007
+# Copyright Andrew Bartlett 2011
#
-# backend code for upgrading from Samba3
-# Copyright Jelmer Vernooij 2005-2007
-# Released under the GNU GPL v3 or later
+# 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 .
#
"""Support code for upgrading from Samba 3 to Samba 4."""
-from provision import findnss, provision, FILL_DRS
-import grp
+__docformat__ = "restructuredText"
+
import ldb
import time
import pwd
-import uuid
-import registry
-from samba import Ldb
-from samba.samdb import SamDB
-
-def import_sam_policy(samldb, samba3_policy, domaindn):
- """Import a Samba 3 policy database."""
- samldb.modify_ldif("""
-dn: %s
-changetype: modify
-replace: minPwdLength
-minPwdLength: %d
-pwdHistoryLength: %d
-minPwdAge: %d
-maxPwdAge: %d
-lockoutDuration: %d
-samba3ResetCountMinutes: %d
-samba3UserMustLogonToChangePassword: %d
-samba3BadLockoutMinutes: %d
-samba3DisconnectTime: %d
-
-""" % (dn, policy.min_password_length,
- policy.password_history, policy.minimum_password_age,
- policy.maximum_password_age, policy.lockout_duration,
- policy.reset_count_minutes, policy.user_must_logon_to_change_password,
- policy.bad_lockout_minutes, policy.disconnect_time))
-
-
-def import_sam_account(samldb,acc,domaindn,domainsid):
- """Import a Samba 3 SAM account.
-
- :param samldb: Samba 4 SAM Database handle
- :param acc: Samba 3 account
- :param domaindn: Domain DN
- :param domainsid: Domain SID."""
- if acc.nt_username is None or acc.nt_username == "":
- acc.nt_username = acc.username
-
- if acc.fullname is None:
- try:
- acc.fullname = pwd.getpwnam(acc.username)[4].split(",")[0]
- except KeyError:
- pass
- if acc.fullname is None:
- acc.fullname = acc.username
-
- assert acc.fullname is not None
- assert acc.nt_username is not None
-
- samldb.add({
- "dn": "cn=%s,%s" % (acc.fullname, domaindn),
- "objectClass": ["top", "user"],
- "lastLogon": str(acc.logon_time),
- "lastLogoff": str(acc.logoff_time),
- "unixName": acc.username,
- "sAMAccountName": acc.nt_username,
- "cn": acc.nt_username,
- "description": acc.acct_desc,
- "primaryGroupID": str(acc.group_rid),
- "badPwdcount": str(acc.bad_password_count),
- "logonCount": str(acc.logon_count),
- "samba3Domain": acc.domain,
- "samba3DirDrive": acc.dir_drive,
- "samba3MungedDial": acc.munged_dial,
- "samba3Homedir": acc.homedir,
- "samba3LogonScript": acc.logon_script,
- "samba3ProfilePath": acc.profile_path,
- "samba3Workstations": acc.workstations,
- "samba3KickOffTime": str(acc.kickoff_time),
- "samba3BadPwdTime": str(acc.bad_password_time),
- "samba3PassLastSetTime": str(acc.pass_last_set_time),
- "samba3PassCanChangeTime": str(acc.pass_can_change_time),
- "samba3PassMustChangeTime": str(acc.pass_must_change_time),
- "objectSid": "%s-%d" % (domainsid, acc.user_rid),
- "lmPwdHash:": acc.lm_password,
- "ntPwdHash:": acc.nt_password,
- })
-
-
-def import_sam_group(samldb, sid, gid, sid_name_use, nt_name, comment, domaindn):
- """Upgrade a SAM group.
-
- :param samldb: SAM database.
- :param gid: Group GID
- :param sid_name_use: SID name use
- :param nt_name: NT Group Name
- :param comment: NT Group Comment
- :param domaindn: Domain DN
+from samba import Ldb, registry
+from samba.param import LoadParm
+from samba.provision import provision, FILL_FULL, ProvisioningError, setsysvolacl
+from samba.samba3 import passdb
+from samba.samba3 import param as s3param
+from samba.dcerpc import lsa, samr, security
+from samba.dcerpc.security import dom_sid
+from samba.credentials import Credentials
+from samba import dsdb
+from samba.ndr import ndr_pack
+from samba import unix2nttime
+
+
+def import_sam_policy(samdb, policy, logger):
+ """Import a Samba 3 policy.
+
+ :param samdb: Samba4 SAM database
+ :param policy: Samba3 account policy
+ :param logger: Logger object
"""
- if sid_name_use == 5: # Well-known group
- return None
+ # Following entries are used -
+ # min password length, password history, minimum password age,
+ # maximum password age, lockout duration
+ #
+ # Following entries are not used -
+ # reset count minutes, user must logon to change password,
+ # bad lockout minutes, disconnect time
+
+ m = ldb.Message()
+ m.dn = samdb.get_default_basedn()
+
+ if 'min password length' in policy:
+ m['a01'] = ldb.MessageElement(str(policy['min password length']),
+ ldb.FLAG_MOD_REPLACE, 'minPwdLength')
+
+ if 'password history' in policy:
+ m['a02'] = ldb.MessageElement(str(policy['password history']),
+ ldb.FLAG_MOD_REPLACE, 'pwdHistoryLength')
+
+ if 'minimum password age' in policy:
+ min_pw_age_unix = policy['minimum password age']
+ min_pw_age_nt = int(-min_pw_age_unix * (1e7))
+ m['a03'] = ldb.MessageElement(str(min_pw_age_nt), ldb.FLAG_MOD_REPLACE,
+ 'minPwdAge')
+
+ if 'maximum password age' in policy:
+ max_pw_age_unix = policy['maximum password age']
+ if max_pw_age_unix == -1 or max_pw_age_unix == 0:
+ max_pw_age_nt = -0x8000000000000000
+ else:
+ max_pw_age_nt = int(-max_pw_age_unix * (1e7))
- if nt_name in ("Domain Guests", "Domain Users", "Domain Admins"):
- return None
-
- if gid == -1:
- gr = grp.getgrnam(nt_name)
- else:
- gr = grp.getgrgid(gid)
+ m['a04'] = ldb.MessageElement(str(max_pw_age_nt), ldb.FLAG_MOD_REPLACE,
+ 'maxPwdAge')
+
+ if 'lockout duration' in policy:
+ lockout_duration_mins = policy['lockout duration']
+ lockout_duration_nt = unix2nttime(lockout_duration_mins * 60)
+
+ m['a05'] = ldb.MessageElement(str(lockout_duration_nt),
+ ldb.FLAG_MOD_REPLACE, 'lockoutDuration')
+
+ try:
+ samdb.modify(m)
+ except ldb.LdbError, e:
+ logger.warn("Could not set account policy, (%s)", str(e))
+
+
+def add_posix_attrs(logger, samdb, sid, name, nisdomain, xid_type, home=None,
+ shell=None, pgid=None):
+ """Add posix attributes for the user/group
- if gr is None:
- unixname = "UNKNOWN"
+ :param samdb: Samba4 sam.ldb database
+ :param sid: user/group sid
+ :param sid: user/group name
+ :param nisdomain: name of the (fake) NIS domain
+ :param xid_type: type of id (ID_TYPE_UID/ID_TYPE_GID)
+ :param home: user homedir (Unix homepath)
+ :param shell: user shell
+ :param pgid: users primary group id
+ """
+
+ try:
+ m = ldb.Message()
+ m.dn = ldb.Dn(samdb, "" % str(sid))
+ if xid_type == "ID_TYPE_UID":
+ m['unixHomeDirectory'] = ldb.MessageElement(
+ str(home), ldb.FLAG_MOD_REPLACE, 'unixHomeDirectory')
+ m['loginShell'] = ldb.MessageElement(
+ str(shell), ldb.FLAG_MOD_REPLACE, 'loginShell')
+ m['gidNumber'] = ldb.MessageElement(
+ str(pgid), ldb.FLAG_MOD_REPLACE, 'gidNumber')
+
+ m['msSFU30NisDomain'] = ldb.MessageElement(
+ str(nisdomain), ldb.FLAG_MOD_REPLACE, 'msSFU30NisDomain')
+
+ samdb.modify(m)
+ except ldb.LdbError, e:
+ logger.warn(
+ 'Could not add posix attrs for AD entry for sid=%s, (%s)',
+ str(sid), str(e))
+
+def add_ad_posix_idmap_entry(samdb, sid, xid, xid_type, logger):
+ """Create idmap entry
+
+ :param samdb: Samba4 sam.ldb database
+ :param sid: user/group sid
+ :param xid: user/group id
+ :param xid_type: type of id (ID_TYPE_UID/ID_TYPE_GID)
+ :param logger: Logger object
+ """
+
+ try:
+ m = ldb.Message()
+ m.dn = ldb.Dn(samdb, "" % str(sid))
+ if xid_type == "ID_TYPE_UID":
+ m['uidNumber'] = ldb.MessageElement(
+ str(xid), ldb.FLAG_MOD_REPLACE, 'uidNumber')
+ m['objectClass'] = ldb.MessageElement(
+ "posixAccount", ldb.FLAG_MOD_ADD, 'objectClass')
+ elif xid_type == "ID_TYPE_GID":
+ m['gidNumber'] = ldb.MessageElement(
+ str(xid), ldb.FLAG_MOD_REPLACE, 'gidNumber')
+ m['objectClass'] = ldb.MessageElement(
+ "posixGroup", ldb.FLAG_MOD_ADD, 'objectClass')
+
+ samdb.modify(m)
+ except ldb.LdbError, e:
+ logger.warn(
+ 'Could not modify AD idmap entry for sid=%s, id=%s, type=%s (%s)',
+ str(sid), str(xid), xid_type, str(e))
+
+
+def add_idmap_entry(idmapdb, sid, xid, xid_type, logger):
+ """Create idmap entry
+
+ :param idmapdb: Samba4 IDMAP database
+ :param sid: user/group sid
+ :param xid: user/group id
+ :param xid_type: type of id (ID_TYPE_UID/ID_TYPE_GID)
+ :param logger: Logger object
+ """
+
+ # First try to see if we already have this entry
+ found = False
+ msg = idmapdb.search(expression='objectSid=%s' % str(sid))
+ if msg.count == 1:
+ found = True
+
+ if found:
+ try:
+ m = ldb.Message()
+ m.dn = msg[0]['dn']
+ m['xidNumber'] = ldb.MessageElement(
+ str(xid), ldb.FLAG_MOD_REPLACE, 'xidNumber')
+ m['type'] = ldb.MessageElement(
+ xid_type, ldb.FLAG_MOD_REPLACE, 'type')
+ idmapdb.modify(m)
+ except ldb.LdbError, e:
+ logger.warn(
+ 'Could not modify idmap entry for sid=%s, id=%s, type=%s (%s)',
+ str(sid), str(xid), xid_type, str(e))
else:
- unixname = gr.gr_name
-
- assert unixname is not None
-
- samldb.add({
- "dn": "cn=%s,%s" % (nt_name, domaindn),
- "objectClass": ["top", "group"],
- "description": comment,
- "cn": nt_name,
- "objectSid": sid,
- "unixName": unixname,
- "samba3SidNameUse": str(sid_name_use)
- })
-
-
-def import_idmap(samdb,samba3_idmap,domaindn):
+ try:
+ idmapdb.add({"dn": "CN=%s" % str(sid),
+ "cn": str(sid),
+ "objectClass": "sidMap",
+ "objectSid": ndr_pack(sid),
+ "type": xid_type,
+ "xidNumber": str(xid)})
+ except ldb.LdbError, e:
+ logger.warn(
+ 'Could not add idmap entry for sid=%s, id=%s, type=%s (%s)',
+ str(sid), str(xid), xid_type, str(e))
+
+
+def import_idmap(idmapdb, samba3, logger):
"""Import idmap data.
- :param samdb: SamDB handle.
- :param samba3_idmap: Samba 3 IDMAP database to import from
- :param domaindn: Domain DN.
+ :param idmapdb: Samba4 IDMAP database
+ :param samba3_idmap: Samba3 IDMAP database to import from
+ :param logger: Logger object
"""
- samdb.add({
- "dn": domaindn,
- "userHwm": str(samba3_idmap.get_user_hwm()),
- "groupHwm": str(samba3_idmap.get_group_hwm())})
- for uid in samba3_idmap.uids():
- samdb.add({"dn": "SID=%s,%s" % (samba3_idmap.get_user_sid(uid), domaindn),
- "SID": samba3_idmap.get_user_sid(uid),
- "type": "user",
- "unixID": str(uid)})
+ try:
+ samba3_idmap = samba3.get_idmap_db()
+ except IOError, e:
+ logger.warn('Cannot open idmap database, Ignoring: %s', str(e))
+ return
+
+ currentxid = max(samba3_idmap.get_user_hwm(), samba3_idmap.get_group_hwm())
+ lowerbound = currentxid
+ # FIXME: upperbound
+
+ m = ldb.Message()
+ m.dn = ldb.Dn(idmapdb, 'CN=CONFIG')
+ m['lowerbound'] = ldb.MessageElement(
+ str(lowerbound), ldb.FLAG_MOD_REPLACE, 'lowerBound')
+ m['xidNumber'] = ldb.MessageElement(
+ str(currentxid), ldb.FLAG_MOD_REPLACE, 'xidNumber')
+ idmapdb.modify(m)
+
+ for id_type, xid in samba3_idmap.ids():
+ if id_type == 'UID':
+ xid_type = 'ID_TYPE_UID'
+ elif id_type == 'GID':
+ xid_type = 'ID_TYPE_GID'
+ else:
+ logger.warn('Wrong type of entry in idmap (%s), Ignoring', id_type)
+ continue
+
+ sid = samba3_idmap.get_sid(xid, id_type)
+ add_idmap_entry(idmapdb, dom_sid(sid), xid, xid_type, logger)
- for gid in samba3_idmap.uids():
- samdb.add({"dn": "SID=%s,%s" % (samba3_idmap.get_group_sid(gid), domaindn),
- "SID": samba3_idmap.get_group_sid(gid),
- "type": "group",
- "unixID": str(gid)})
+
+def add_group_from_mapping_entry(samdb, groupmap, logger):
+ """Add or modify group from group mapping entry
+
+ param samdb: Samba4 SAM database
+ param groupmap: Groupmap entry
+ param logger: Logger object
+ """
+
+ # First try to see if we already have this entry
+ try:
+ msg = samdb.search(
+ base='' % str(groupmap.sid), scope=ldb.SCOPE_BASE)
+ found = True
+ except ldb.LdbError, (ecode, emsg):
+ if ecode == ldb.ERR_NO_SUCH_OBJECT:
+ found = False
+ else:
+ raise ldb.LdbError(ecode, emsg)
+
+ if found:
+ logger.warn('Group already exists sid=%s, groupname=%s existing_groupname=%s, Ignoring.',
+ str(groupmap.sid), groupmap.nt_name, msg[0]['sAMAccountName'][0])
+ else:
+ if groupmap.sid_name_use == lsa.SID_NAME_WKN_GRP:
+ # In a lot of Samba3 databases, aliases are marked as well known groups
+ (group_dom_sid, rid) = groupmap.sid.split()
+ if (group_dom_sid != security.dom_sid(security.SID_BUILTIN)):
+ return
+
+ m = ldb.Message()
+ m.dn = ldb.Dn(samdb, "CN=%s,CN=Users,%s" % (groupmap.nt_name, samdb.get_default_basedn()))
+ m['cn'] = ldb.MessageElement(groupmap.nt_name, ldb.FLAG_MOD_ADD, 'cn')
+ m['objectClass'] = ldb.MessageElement('group', ldb.FLAG_MOD_ADD, 'objectClass')
+ m['objectSid'] = ldb.MessageElement(ndr_pack(groupmap.sid), ldb.FLAG_MOD_ADD,
+ 'objectSid')
+ m['sAMAccountName'] = ldb.MessageElement(groupmap.nt_name, ldb.FLAG_MOD_ADD,
+ 'sAMAccountName')
+
+ if groupmap.comment:
+ m['description'] = ldb.MessageElement(groupmap.comment, ldb.FLAG_MOD_ADD,
+ 'description')
+
+ # Fix up incorrect 'well known' groups that are actually builtin (per test above) to be aliases
+ if groupmap.sid_name_use == lsa.SID_NAME_ALIAS or groupmap.sid_name_use == lsa.SID_NAME_WKN_GRP:
+ m['groupType'] = ldb.MessageElement(str(dsdb.GTYPE_SECURITY_DOMAIN_LOCAL_GROUP),
+ ldb.FLAG_MOD_ADD, 'groupType')
+
+ try:
+ samdb.add(m, controls=["relax:0"])
+ except ldb.LdbError, e:
+ logger.warn('Could not add group name=%s (%s)', groupmap.nt_name, str(e))
+
+
+def add_users_to_group(samdb, group, members, logger):
+ """Add user/member to group/alias
+
+ param samdb: Samba4 SAM database
+ param group: Groupmap object
+ param members: List of member SIDs
+ param logger: Logger object
+ """
+ for member_sid in members:
+ m = ldb.Message()
+ m.dn = ldb.Dn(samdb, "" % str(group.sid))
+ m['a01'] = ldb.MessageElement("" % str(member_sid), ldb.FLAG_MOD_ADD, 'member')
+
+ try:
+ samdb.modify(m)
+ except ldb.LdbError, (ecode, emsg):
+ if ecode == ldb.ERR_ENTRY_ALREADY_EXISTS:
+ logger.debug("skipped re-adding member '%s' to group '%s': %s", member_sid, group.sid, emsg)
+ elif ecode == ldb.ERR_NO_SUCH_OBJECT:
+ raise ProvisioningError("Could not add member '%s' to group '%s' as either group or user record doesn't exist: %s" % (member_sid, group.sid, emsg))
+ else:
+ raise ProvisioningError("Could not add member '%s' to group '%s': %s" % (member_sid, group.sid, emsg))
def import_wins(samba4_winsdb, samba3_winsdb):
"""Import settings from a Samba3 WINS database.
-
+
:param samba4_winsdb: WINS database to import to
:param samba3_winsdb: WINS database to import from
"""
+
version_id = 0
for (name, (ttl, ips, nb_flags)) in samba3_winsdb.items():
- version_id+=1
+ version_id += 1
type = int(name.split("#", 1)[1], 16)
@@ -188,7 +349,7 @@ def import_wins(samba4_winsdb, samba3_winsdb):
else:
rState = 0x1 # released
- nType = ((nb_flags & 0x60)>>5)
+ nType = ((nb_flags & 0x60) >> 5)
samba4_winsdb.add({"dn": "name=%s,type=0x%s" % tuple(name.split("#")),
"type": name.split("#")[1],
@@ -207,77 +368,6 @@ def import_wins(samba4_winsdb, samba3_winsdb):
"objectClass": "winsMaxVersion",
"maxVersion": str(version_id)})
-def upgrade_provision(samba3, setup_dir, message, credentials, session_info, lp, paths):
- oldconf = samba3.get_conf()
-
- if oldconf.get("domain logons") == "True":
- serverrole = "domain controller"
- else:
- if oldconf.get("security") == "user":
- serverrole = "standalone"
- else:
- serverrole = "member server"
-
- lp.set("server role", serverrole)
- domainname = oldconf.get("workgroup")
- if domainname:
- domainname = str(domainname)
- lp.set("workgroup", domainname)
- realm = oldconf.get("realm")
- netbiosname = oldconf.get("netbios name")
-
- secrets_db = samba3.get_secrets_db()
-
- if domainname is None:
- domainname = secrets_db.domains()[0]
- message("No domain specified in smb.conf file, assuming '%s'" % domainname)
-
- if realm is None:
- realm = domainname.lower()
- message("No realm specified in smb.conf file, assuming '%s'\n" % realm)
- lp.set("realm", realm)
-
- domainguid = secrets_db.get_domain_guid(domainname)
- domainsid = secrets_db.get_sid(domainname)
- if domainsid is None:
- message("Can't find domain secrets for '%s'; using random SID\n" % domainname)
-
- if netbiosname is not None:
- machinepass = secrets_db.get_machine_password(netbiosname)
- else:
- machinepass = None
-
- domaindn = provision(lp=lp, setup_dir=setup_dir, message=message,
- samdb_fill=FILL_DRS, paths=paths, session_info=session_info,
- credentials=credentials, realm=realm,
- domain=domainname, domainsid=domainsid, domainguid=domainguid,
- machinepass=machinepass, serverrole=serverrole)
-
- samdb = SamDB(paths.samdb, credentials=credentials, lp=lp, session_info=session_info)
-
- import_wins(Ldb(paths.winsdb), samba3.get_wins_db())
-
- # FIXME: import_registry(registry.Registry(), samba3.get_registry())
-
- # FIXME: import_idmap(samdb,samba3.get_idmap_db(),domaindn)
-
- groupdb = samba3.get_groupmapping_db()
- for sid in groupdb.groupsids():
- (gid, sid_name_use, nt_name, comment) = groupdb.get_group(sid)
- # FIXME: import_sam_group(samdb, sid, gid, sid_name_use, nt_name, comment, domaindn)
-
- # FIXME: Aliases
-
- passdb = samba3.get_sam_db()
- for name in passdb:
- user = passdb[name]
- #FIXME: import_sam_account(samdb, user, domaindn, domainsid)
-
- if hasattr(passdb, 'ldap_url'):
- message("Enabling Samba3 LDAP mappings for SAM database")
-
- enable_samba3sam(samdb, passdb.ldap_url)
-
def enable_samba3sam(samdb, ldapurl):
"""Enable Samba 3 LDAP URL database.
@@ -296,7 +386,7 @@ replace: @LIST
smbconf_keep = [
- "dos charset",
+ "dos charset",
"unix charset",
"display charset",
"comment",
@@ -340,8 +430,6 @@ smbconf_keep = [
"write raw",
"disable netbios",
"nt status support",
- "announce version",
- "announce as",
"max mux",
"max xmit",
"name resolve order",
@@ -389,15 +477,16 @@ smbconf_keep = [
"host msdfs",
"winbind separator"]
-def upgrade_smbconf(oldconf,mark):
+
+def upgrade_smbconf(oldconf, mark):
"""Remove configuration variables not present in Samba4
:param oldconf: Old configuration structure
- :param mark: Whether removed configuration variables should be
+ :param mark: Whether removed configuration variables should be
kept in the new configuration as "samba3:"
"""
data = oldconf.data()
- newconf = param_init()
+ newconf = LoadParm()
for s in data:
for p in data[s]:
@@ -410,7 +499,7 @@ def upgrade_smbconf(oldconf,mark):
if keep:
newconf.set(s, p, oldconf.get(s, p))
elif mark:
- newconf.set(s, "samba3:"+p, oldconf.get(s,p))
+ newconf.set(s, "samba3:" + p, oldconf.get(s, p))
return newconf
@@ -418,6 +507,7 @@ SAMBA3_PREDEF_NAMES = {
'HKLM': registry.HKEY_LOCAL_MACHINE,
}
+
def import_registry(samba4_registry, samba3_regdb):
"""Import a Samba 3 registry database into the Samba 4 registry.
@@ -437,4 +527,397 @@ def import_registry(samba4_registry, samba3_regdb):
for (value_name, (value_type, value_data)) in samba3_regdb.values(key).items():
key_handle.set_value(value_name, value_type, value_data)
+def get_posix_attr_from_ldap_backend(logger, ldb_object, base_dn, user, attr):
+ """Get posix attributes from a samba3 ldap backend
+ :param ldbs: a list of ldb connection objects
+ :param base_dn: the base_dn of the connection
+ :param user: the user to get the attribute for
+ :param attr: the attribute to be retrieved
+ """
+ try:
+ msg = ldb_object.search(base_dn, scope=ldb.SCOPE_SUBTREE,
+ expression=("(&(objectClass=posixAccount)(uid=%s))"
+ % (user)), attrs=[attr])
+ except ldb.LdbError, e:
+ raise ProvisioningError("Failed to retrieve attribute %s for user %s, the error is: %s", attr, user, e)
+ else:
+ if msg.count <= 1:
+ # This will raise KeyError (which is what we want) if there isn't a entry for this user
+ return msg[0][attr][0]
+ else:
+ logger.warning("LDAP entry for user %s contains more than one %s", user, attr)
+ raise KeyError
+
+
+def upgrade_from_samba3(samba3, logger, targetdir, session_info=None,
+ useeadb=False, dns_backend=None, use_ntvfs=False):
+ """Upgrade from samba3 database to samba4 AD database
+
+ :param samba3: samba3 object
+ :param logger: Logger object
+ :param targetdir: samba4 database directory
+ :param session_info: Session information
+ """
+ serverrole = samba3.lp.server_role()
+ domainname = samba3.lp.get("workgroup")
+ realm = samba3.lp.get("realm")
+ netbiosname = samba3.lp.get("netbios name")
+
+ if samba3.lp.get("ldapsam:trusted") is None:
+ samba3.lp.set("ldapsam:trusted", "yes")
+
+ # secrets db
+ try:
+ secrets_db = samba3.get_secrets_db()
+ except IOError, e:
+ raise ProvisioningError("Could not open '%s', the Samba3 secrets database: %s. Perhaps you specified the incorrect smb.conf, --testparm or --dbdir option?" % (samba3.privatedir_path("secrets.tdb"), str(e)))
+
+ if not domainname:
+ domainname = secrets_db.domains()[0]
+ logger.warning("No workgroup specified in smb.conf file, assuming '%s'",
+ domainname)
+
+ if not realm:
+ if serverrole == "ROLE_DOMAIN_BDC" or serverrole == "ROLE_DOMAIN_PDC":
+ raise ProvisioningError("No realm specified in smb.conf file and being a DC. That upgrade path doesn't work! Please add a 'realm' directive to your old smb.conf to let us know which one you want to use (it is the DNS name of the AD domain you wish to create.")
+ else:
+ realm = domainname.upper()
+ logger.warning("No realm specified in smb.conf file, assuming '%s'",
+ realm)
+
+ # Find machine account and password
+ next_rid = 1000
+
+ try:
+ machinepass = secrets_db.get_machine_password(netbiosname)
+ except KeyError:
+ machinepass = None
+
+ if samba3.lp.get("passdb backend").split(":")[0].strip() == "ldapsam":
+ base_dn = samba3.lp.get("ldap suffix")
+ ldapuser = samba3.lp.get("ldap admin dn")
+ ldappass = (secrets_db.get_ldap_bind_pw(ldapuser)).strip('\x00')
+ ldap = True
+ else:
+ ldapuser = None
+ ldappass = None
+ ldap = False
+
+ # We must close the direct pytdb database before the C code loads it
+ secrets_db.close()
+
+ # Connect to old password backend
+ passdb.set_secrets_dir(samba3.lp.get("private dir"))
+ s3db = samba3.get_sam_db()
+
+ # Get domain sid
+ try:
+ domainsid = passdb.get_global_sam_sid()
+ except passdb.error:
+ raise Exception("Can't find domain sid for '%s', Exiting." % domainname)
+
+ # Get machine account, sid, rid
+ try:
+ machineacct = s3db.getsampwnam('%s$' % netbiosname)
+ except passdb.error:
+ machinerid = None
+ machinesid = None
+ else:
+ machinesid, machinerid = machineacct.user_sid.split()
+
+ # Export account policy
+ logger.info("Exporting account policy")
+ policy = s3db.get_account_policy()
+
+ # Export groups from old passdb backend
+ logger.info("Exporting groups")
+ grouplist = s3db.enum_group_mapping()
+ groupmembers = {}
+ for group in grouplist:
+ sid, rid = group.sid.split()
+ if sid == domainsid:
+ if rid >= next_rid:
+ next_rid = rid + 1
+
+ # Get members for each group/alias
+ if group.sid_name_use == lsa.SID_NAME_ALIAS:
+ try:
+ members = s3db.enum_aliasmem(group.sid)
+ groupmembers[str(group.sid)] = members
+ except passdb.error, e:
+ logger.warn("Ignoring group '%s' %s listed but then not found: %s",
+ group.nt_name, group.sid, e)
+ continue
+ elif group.sid_name_use == lsa.SID_NAME_DOM_GRP:
+ try:
+ members = s3db.enum_group_members(group.sid)
+ groupmembers[str(group.sid)] = members
+ except passdb.error, e:
+ logger.warn("Ignoring group '%s' %s listed but then not found: %s",
+ group.nt_name, group.sid, e)
+ continue
+ elif group.sid_name_use == lsa.SID_NAME_WKN_GRP:
+ (group_dom_sid, rid) = group.sid.split()
+ if (group_dom_sid != security.dom_sid(security.SID_BUILTIN)):
+ logger.warn("Ignoring 'well known' group '%s' (should already be in AD, and have no members)",
+ group.nt_name)
+ continue
+ # A number of buggy databases mix up well known groups and aliases.
+ try:
+ members = s3db.enum_aliasmem(group.sid)
+ groupmembers[str(group.sid)] = members
+ except passdb.error, e:
+ logger.warn("Ignoring group '%s' %s listed but then not found: %s",
+ group.nt_name, group.sid, e)
+ continue
+ else:
+ logger.warn("Ignoring group '%s' %s with sid_name_use=%d",
+ group.nt_name, group.sid, group.sid_name_use)
+ continue
+
+ # Export users from old passdb backend
+ logger.info("Exporting users")
+ userlist = s3db.search_users(0)
+ userdata = {}
+ uids = {}
+ admin_user = None
+ for entry in userlist:
+ if machinerid and machinerid == entry['rid']:
+ continue
+ username = entry['account_name']
+ if entry['rid'] < 1000:
+ logger.info(" Skipping wellknown rid=%d (for username=%s)", entry['rid'], username)
+ continue
+ if entry['rid'] >= next_rid:
+ next_rid = entry['rid'] + 1
+
+ user = s3db.getsampwnam(username)
+ acct_type = (user.acct_ctrl & (samr.ACB_NORMAL|samr.ACB_WSTRUST|samr.ACB_SVRTRUST|samr.ACB_DOMTRUST))
+ if (acct_type == samr.ACB_NORMAL or acct_type == samr.ACB_WSTRUST):
+ pass
+
+ elif acct_type == samr.ACB_SVRTRUST:
+ logger.warn(" Demoting BDC account trust for %s, this DC must be elevated to an AD DC using 'samba-tool domain promote'" % username[:-1])
+ user.acct_ctrl = (user.acct_ctrl & ~samr.ACB_SVRTRUST) | samr.ACB_WSTRUST
+
+ elif acct_type == samr.ACB_DOMTRUST:
+ logger.warn(" Skipping inter-domain trust from domain %s, this trust must be re-created as an AD trust" % username[:-1])
+
+ elif acct_type == (samr.ACB_NORMAL|samr.ACB_WSTRUST) and username[-1] == '$':
+ logger.warn(" Fixing account %s which had both ACB_NORMAL (U) and ACB_WSTRUST (W) set. Account will be marked as ACB_WSTRUST (W), i.e. as a domain member" % username)
+ user.acct_ctrl = (user.acct_ctrl & ~samr.ACB_NORMAL)
+
+ elif acct_type == (samr.ACB_NORMAL|samr.ACB_SVRTRUST) and username[-1] == '$':
+ logger.warn(" Fixing account %s which had both ACB_NORMAL (U) and ACB_SVRTRUST (S) set. Account will be marked as ACB_WSTRUST (S), i.e. as a domain member" % username)
+ user.acct_ctrl = (user.acct_ctrl & ~samr.ACB_NORMAL)
+
+ else:
+ raise ProvisioningError("""Failed to upgrade due to invalid account %s, account control flags 0x%08X must have exactly one of
+ACB_NORMAL (N, 0x%08X), ACB_WSTRUST (W 0x%08X), ACB_SVRTRUST (S 0x%08X) or ACB_DOMTRUST (D 0x%08X).
+
+Please fix this account before attempting to upgrade again
+"""
+ % (user.acct_flags, username,
+ samr.ACB_NORMAL, samr.ACB_WSTRUST, samr.ACB_SVRTRUST, samr.ACB_DOMTRUST))
+
+ userdata[username] = user
+ try:
+ uids[username] = s3db.sid_to_id(user.user_sid)[0]
+ except passdb.error:
+ try:
+ uids[username] = pwd.getpwnam(username).pw_uid
+ except KeyError:
+ pass
+
+ if not admin_user and username.lower() == 'root':
+ admin_user = username
+ if username.lower() == 'administrator':
+ admin_user = username
+
+ try:
+ group_memberships = s3db.enum_group_memberships(user);
+ for group in group_memberships:
+ if str(group) in groupmembers:
+ if user.user_sid not in groupmembers[str(group)]:
+ groupmembers[str(group)].append(user.user_sid)
+ else:
+ groupmembers[str(group)] = [user.user_sid];
+ except passdb.error, e:
+ logger.warn("Ignoring group memberships of '%s' %s: %s",
+ username, user.user_sid, e)
+
+ logger.info("Next rid = %d", next_rid)
+
+ # Check for same username/groupname
+ group_names = set([g.nt_name for g in grouplist])
+ user_names = set([u['account_name'] for u in userlist])
+ common_names = group_names.intersection(user_names)
+ if common_names:
+ logger.error("Following names are both user names and group names:")
+ for name in common_names:
+ logger.error(" %s" % name)
+ raise ProvisioningError("Please remove common user/group names before upgrade.")
+
+ # Check for same user sid/group sid
+ group_sids = set([str(g.sid) for g in grouplist])
+ if len(grouplist) != len(group_sids):
+ raise ProvisioningError("Please remove duplicate group sid entries before upgrade.")
+ user_sids = set(["%s-%u" % (domainsid, u['rid']) for u in userlist])
+ if len(userlist) != len(user_sids):
+ raise ProvisioningError("Please remove duplicate user sid entries before upgrade.")
+ common_sids = group_sids.intersection(user_sids)
+ if common_sids:
+ logger.error("Following sids are both user and group sids:")
+ for sid in common_sids:
+ logger.error(" %s" % str(sid))
+ raise ProvisioningError("Please remove duplicate sid entries before upgrade.")
+
+ # Get posix attributes from ldap or the os
+ homes = {}
+ shells = {}
+ pgids = {}
+ if ldap:
+ creds = Credentials()
+ creds.guess(samba3.lp)
+ creds.set_bind_dn(ldapuser)
+ creds.set_password(ldappass)
+ urls = samba3.lp.get("passdb backend").split(":",1)[1].strip('"')
+ for url in urls.split():
+ try:
+ ldb_object = Ldb(url, credentials=creds)
+ except ldb.LdbError, e:
+ logger.warning("Could not open ldb connection to %s, the error message is: %s", url, e)
+ else:
+ break
+ logger.info("Exporting posix attributes")
+ userlist = s3db.search_users(0)
+ for entry in userlist:
+ username = entry['account_name']
+ if username in uids.keys():
+ try:
+ if ldap:
+ homes[username] = get_posix_attr_from_ldap_backend(logger, ldb_object, base_dn, username, "homeDirectory")
+ else:
+ homes[username] = pwd.getpwnam(username).pw_dir
+ except KeyError:
+ pass
+
+ try:
+ if ldap:
+ shells[username] = get_posix_attr_from_ldap_backend(logger, ldb_object, base_dn, username, "loginShell")
+ else:
+ shells[username] = pwd.getpwnam(username).pw_shell
+ except KeyError:
+ pass
+
+ try:
+ if ldap:
+ pgids[username] = get_posix_attr_from_ldap_backend(logger, ldb_object, base_dn, username, "gidNumber")
+ else:
+ pgids[username] = pwd.getpwnam(username).pw_gid
+ except KeyError:
+ pass
+
+ logger.info("Reading WINS database")
+ samba3_winsdb = None
+ try:
+ samba3_winsdb = samba3.get_wins_db()
+ except IOError, e:
+ logger.warn('Cannot open wins database, Ignoring: %s', str(e))
+
+ if not (serverrole == "ROLE_DOMAIN_BDC" or serverrole == "ROLE_DOMAIN_PDC"):
+ dns_backend = "NONE"
+
+ # Do full provision
+ result = provision(logger, session_info, None,
+ targetdir=targetdir, realm=realm, domain=domainname,
+ domainsid=str(domainsid), next_rid=next_rid,
+ dc_rid=machinerid,
+ dom_for_fun_level=dsdb.DS_DOMAIN_FUNCTION_2003,
+ hostname=netbiosname.lower(), machinepass=machinepass,
+ serverrole=serverrole, samdb_fill=FILL_FULL,
+ useeadb=useeadb, dns_backend=dns_backend, use_rfc2307=True,
+ use_ntvfs=use_ntvfs, skip_sysvolacl=True)
+ result.report_logger(logger)
+
+ # Import WINS database
+ logger.info("Importing WINS database")
+
+ if samba3_winsdb:
+ import_wins(Ldb(result.paths.winsdb), samba3_winsdb)
+
+ # Set Account policy
+ logger.info("Importing Account policy")
+ import_sam_policy(result.samdb, policy, logger)
+
+ # Migrate IDMAP database
+ logger.info("Importing idmap database")
+ import_idmap(result.idmap, samba3, logger)
+
+ # Set the s3 context for samba4 configuration
+ new_lp_ctx = s3param.get_context()
+ new_lp_ctx.load(result.lp.configfile)
+ new_lp_ctx.set("private dir", result.lp.get("private dir"))
+ new_lp_ctx.set("state directory", result.lp.get("state directory"))
+ new_lp_ctx.set("lock directory", result.lp.get("lock directory"))
+
+ # Connect to samba4 backend
+ s4_passdb = passdb.PDB(new_lp_ctx.get("passdb backend"))
+
+ # Export groups to samba4 backend
+ logger.info("Importing groups")
+ for g in grouplist:
+ # Ignore uninitialized groups (gid = -1)
+ if g.gid != -1:
+ add_group_from_mapping_entry(result.samdb, g, logger)
+ add_ad_posix_idmap_entry(result.samdb, g.sid, g.gid, "ID_TYPE_GID", logger)
+ add_posix_attrs(samdb=result.samdb, sid=g.sid, name=g.nt_name, nisdomain=domainname.lower(), xid_type="ID_TYPE_GID", logger=logger)
+
+ # Export users to samba4 backend
+ logger.info("Importing users")
+ for username in userdata:
+ if username.lower() == 'administrator':
+ if userdata[username].user_sid != dom_sid(str(domainsid) + "-500"):
+ logger.error("User 'Administrator' in your existing directory has SID %s, expected it to be %s" % (userdata[username].user_sid, dom_sid(str(domainsid) + "-500")))
+ raise ProvisioningError("User 'Administrator' in your existing directory does not have SID ending in -500")
+ if username.lower() == 'root':
+ if userdata[username].user_sid == dom_sid(str(domainsid) + "-500"):
+ logger.warn('User root has been replaced by Administrator')
+ else:
+ logger.warn('User root has been kept in the directory, it should be removed in favour of the Administrator user')
+
+ s4_passdb.add_sam_account(userdata[username])
+ if username in uids:
+ add_ad_posix_idmap_entry(result.samdb, userdata[username].user_sid, uids[username], "ID_TYPE_UID", logger)
+ if (username in homes) and (homes[username] is not None) and \
+ (username in shells) and (shells[username] is not None) and \
+ (username in pgids) and (pgids[username] is not None):
+ add_posix_attrs(samdb=result.samdb, sid=userdata[username].user_sid, name=username, nisdomain=domainname.lower(), xid_type="ID_TYPE_UID", home=homes[username], shell=shells[username], pgid=pgids[username], logger=logger)
+
+ logger.info("Adding users to groups")
+ for g in grouplist:
+ if str(g.sid) in groupmembers:
+ add_users_to_group(result.samdb, g, groupmembers[str(g.sid)], logger)
+
+ # Set password for administrator
+ if admin_user:
+ logger.info("Setting password for administrator")
+ admin_userdata = s4_passdb.getsampwnam("administrator")
+ admin_userdata.nt_passwd = userdata[admin_user].nt_passwd
+ if userdata[admin_user].lanman_passwd:
+ admin_userdata.lanman_passwd = userdata[admin_user].lanman_passwd
+ admin_userdata.pass_last_set_time = userdata[admin_user].pass_last_set_time
+ if userdata[admin_user].pw_history:
+ admin_userdata.pw_history = userdata[admin_user].pw_history
+ s4_passdb.update_sam_account(admin_userdata)
+ logger.info("Administrator password has been set to password of user '%s'", admin_user)
+
+ if result.server_role == "active directory domain controller":
+ setsysvolacl(result.samdb, result.paths.netlogon, result.paths.sysvol,
+ result.paths.root_uid, result.paths.root_gid,
+ security.dom_sid(result.domainsid), result.names.dnsdomain,
+ result.names.domaindn, result.lp, use_ntvfs)
+
+ # FIXME: import_registry(registry.Registry(), samba3.get_registry())
+ # FIXME: shares