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samba-mirror/python/samba/sites.py
Joseph Sutton 12677ff65e python: Handle LdbError thrown from functions operating on DNs
None of these functions can return False now. Instead we must catch the
LdbError if we want to perform further error handling.

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2022-10-05 04:23:32 +00:00

127 lines
4.0 KiB
Python

# python site manipulation code
# Copyright Matthieu Patou <mat@matws.net> 2011
#
# 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/>.
#
"""Manipulating sites."""
import ldb
from ldb import FLAG_MOD_ADD, LdbError
class SiteException(Exception):
"""Base element for Sites errors"""
def __init__(self, value):
self.value = value
def __str__(self):
return "%s: %s" % (self.__class__.__name__, self.value)
class SiteNotFoundException(SiteException):
"""Raised when the site is not found and it's expected to exists."""
class SiteAlreadyExistsException(SiteException):
"""Raised when the site is not found and it's expected not to exists."""
class SiteServerNotEmptyException(SiteException):
"""Raised when the site still has servers attached."""
def create_site(samdb, configDn, siteName):
"""
Create a site
:param samdb: A samdb connection
:param configDn: The DN of the configuration partition
:param siteName: Name of the site to create
:return: True upon success
:raise SiteAlreadyExists: if the site to be created already exists.
"""
ret = samdb.search(base=configDn, scope=ldb.SCOPE_SUBTREE,
expression='(&(objectclass=Site)(cn=%s))' % siteName)
if len(ret) != 0:
raise SiteAlreadyExistsException('A site with the name %s already exists' % siteName)
m = ldb.Message()
m.dn = ldb.Dn(samdb, "Cn=%s,CN=Sites,%s" % (siteName, str(configDn)))
m["objectclass"] = ldb.MessageElement("site", FLAG_MOD_ADD, "objectclass")
samdb.add(m)
m2 = ldb.Message()
m2.dn = ldb.Dn(samdb, "Cn=NTDS Site Settings,%s" % str(m.dn))
m2["objectclass"] = ldb.MessageElement("nTDSSiteSettings", FLAG_MOD_ADD, "objectclass")
samdb.add(m2)
m3 = ldb.Message()
m3.dn = ldb.Dn(samdb, "Cn=Servers,%s" % str(m.dn))
m3["objectclass"] = ldb.MessageElement("serversContainer", FLAG_MOD_ADD, "objectclass")
samdb.add(m3)
return True
def delete_site(samdb, configDn, siteName):
"""
Delete a site
:param samdb: A samdb connection
:param configDn: The DN of the configuration partition
:param siteName: Name of the site to delete
:return: True upon success
:raise SiteNotFoundException: if the site to be deleted do not exists.
:raise SiteServerNotEmpty: if the site has still servers in it.
"""
dnsite = ldb.Dn(samdb, "CN=Sites")
try:
dnsite.add_base(configDn)
except ldb.LdbError:
raise SiteException("dnsite.add_base() failed")
try:
dnsite.add_child("CN=X")
except ldb.LdbError:
raise SiteException("dnsite.add_child() failed")
dnsite.set_component(0, "CN", siteName)
dnservers = ldb.Dn(samdb, "CN=Servers")
dnservers.add_base(dnsite)
try:
ret = samdb.search(base=dnsite, scope=ldb.SCOPE_BASE,
expression="objectClass=site")
if len(ret) != 1:
raise SiteNotFoundException('Site %s does not exist' % siteName)
except LdbError as e:
(enum, estr) = e.args
if enum == ldb.ERR_NO_SUCH_OBJECT:
raise SiteNotFoundException('Site %s does not exist' % siteName)
ret = samdb.search(base=dnservers, scope=ldb.SCOPE_ONELEVEL,
expression='(objectclass=server)')
if len(ret) != 0:
raise SiteServerNotEmptyException('Site %s still has servers in it, move them before removal' % siteName)
samdb.delete(dnsite, ["tree_delete:0"])
return True