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# delegation management
#
# Copyright Matthieu Patou mat@samba.org 2010
# Copyright Stefan Metzmacher metze@samba.org 2011
# Copyright Bjoern Baumbach bb@sernet.de 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/>.
#
import samba.getopt as options
import ldb
from samba import provision
from samba import dsdb
from samba.samdb import SamDB
from samba.auth import system_session
from samba.netcmd.common import _get_user_realm_domain
from samba.netcmd import (
Command,
CommandError,
SuperCommand,
Option
)
class cmd_delegation_show(Command):
"""Show the delegation setting of an account."""
synopsis = "%prog <accountname> [options]"
takes_optiongroups = {
"sambaopts": options.SambaOptions,
"credopts": options.CredentialsOptions,
"versionopts": options.VersionOptions,
}
takes_args = ["accountname"]
def run(self, accountname, credopts=None, sambaopts=None, versionopts=None):
lp = sambaopts.get_loadparm()
creds = credopts.get_credentials(lp)
paths = provision.provision_paths_from_lp(lp, lp.get("realm"))
sam = SamDB(paths.samdb, session_info=system_session(),
credentials=creds, lp=lp)
# TODO once I understand how, use the domain info to naildown
# to the correct domain
(cleanedaccount, realm, domain) = _get_user_realm_domain(accountname)
res = sam.search(expression="sAMAccountName=%s" %
ldb.binary_encode(cleanedaccount),
scope=ldb.SCOPE_SUBTREE,
attrs=["userAccountControl", "msDS-AllowedToDelegateTo"])
if len(res) == 0:
raise CommandError("Unable to find account name '%s'" % accountname)
assert(len(res) == 1)
uac = int(res[0].get("userAccountControl")[0])
allowed = res[0].get("msDS-AllowedToDelegateTo")
self.outf.write("Account-DN: %s\n" % str(res[0].dn))
self.outf.write("UF_TRUSTED_FOR_DELEGATION: %s\n"
% bool(uac & dsdb.UF_TRUSTED_FOR_DELEGATION))
self.outf.write("UF_TRUSTED_TO_AUTHENTICATE_FOR_DELEGATION: %s\n" %
bool(uac & dsdb.UF_TRUSTED_TO_AUTHENTICATE_FOR_DELEGATION))
if allowed is not None:
for a in allowed:
self.outf.write("msDS-AllowedToDelegateTo: %s\n" % a)
class cmd_delegation_for_any_service(Command):
"""Set/unset UF_TRUSTED_FOR_DELEGATION for an account."""
synopsis = "%prog <accountname> [(on|off)] [options]"
takes_optiongroups = {
"sambaopts": options.SambaOptions,
"credopts": options.CredentialsOptions,
"versionopts": options.VersionOptions,
}
takes_args = ["accountname", "onoff"]
def run(self, accountname, onoff, credopts=None, sambaopts=None,
versionopts=None):
on = False
if onoff == "on":
on = True
elif onoff == "off":
on = False
else:
raise CommandError("invalid argument: '%s' (choose from 'on', 'off')" % onoff)
lp = sambaopts.get_loadparm()
creds = credopts.get_credentials(lp)
paths = provision.provision_paths_from_lp(lp, lp.get("realm"))
sam = SamDB(paths.samdb, session_info=system_session(),
credentials=creds, lp=lp)
# TODO once I understand how, use the domain info to naildown
# to the correct domain
(cleanedaccount, realm, domain) = _get_user_realm_domain(accountname)
search_filter = "sAMAccountName=%s" % ldb.binary_encode(cleanedaccount)
flag = dsdb.UF_TRUSTED_FOR_DELEGATION
try:
sam.toggle_userAccountFlags(search_filter, flag,
flags_str="Trusted-for-Delegation",
on=on, strict=True)
except Exception, err:
raise CommandError(err)
class cmd_delegation_for_any_protocol(Command):
"""Set/unset UF_TRUSTED_TO_AUTHENTICATE_FOR_DELEGATION (S4U2Proxy) for an account."""
synopsis = "%prog <accountname> [(on|off)] [options]"
takes_optiongroups = {
"sambaopts": options.SambaOptions,
"credopts": options.CredentialsOptions,
"versionopts": options.VersionOptions,
}
takes_args = ["accountname", "onoff"]
def run(self, accountname, onoff, credopts=None, sambaopts=None,
versionopts=None):
on = False
if onoff == "on":
on = True
elif onoff == "off":
on = False
else:
raise CommandError("invalid argument: '%s' (choose from 'on', 'off')" % onoff)
lp = sambaopts.get_loadparm()
creds = credopts.get_credentials(lp)
paths = provision.provision_paths_from_lp(lp, lp.get("realm"))
sam = SamDB(paths.samdb, session_info=system_session(),
credentials=creds, lp=lp)
# TODO once I understand how, use the domain info to naildown
# to the correct domain
(cleanedaccount, realm, domain) = _get_user_realm_domain(accountname)
search_filter = "sAMAccountName=%s" % ldb.binary_encode(cleanedaccount)
flag = dsdb.UF_TRUSTED_TO_AUTHENTICATE_FOR_DELEGATION
try:
sam.toggle_userAccountFlags(search_filter, flag,
flags_str="Trusted-to-Authenticate-for-Delegation",
on=on, strict=True)
except Exception, err:
raise CommandError(err)
class cmd_delegation_add_service(Command):
"""Add a service principal as msDS-AllowedToDelegateTo."""
synopsis = "%prog <accountname> <principal> [options]"
takes_optiongroups = {
"sambaopts": options.SambaOptions,
"credopts": options.CredentialsOptions,
"versionopts": options.VersionOptions,
}
takes_args = ["accountname", "principal"]
def run(self, accountname, principal, credopts=None, sambaopts=None,
versionopts=None):
lp = sambaopts.get_loadparm()
creds = credopts.get_credentials(lp)
paths = provision.provision_paths_from_lp(lp, lp.get("realm"))
sam = SamDB(paths.samdb, session_info=system_session(),
credentials=creds, lp=lp)
# TODO once I understand how, use the domain info to naildown
# to the correct domain
(cleanedaccount, realm, domain) = _get_user_realm_domain(accountname)
res = sam.search(expression="sAMAccountName=%s" %
ldb.binary_encode(cleanedaccount),
scope=ldb.SCOPE_SUBTREE,
attrs=["msDS-AllowedToDelegateTo"])
if len(res) == 0:
raise CommandError("Unable to find account name '%s'" % accountname)
assert(len(res) == 1)
msg = ldb.Message()
msg.dn = res[0].dn
msg["msDS-AllowedToDelegateTo"] = ldb.MessageElement([principal],
ldb.FLAG_MOD_ADD,
"msDS-AllowedToDelegateTo")
try:
sam.modify(msg)
except Exception, err:
raise CommandError(err)
class cmd_delegation_del_service(Command):
"""Delete a service principal as msDS-AllowedToDelegateTo."""
synopsis = "%prog <accountname> <principal> [options]"
takes_optiongroups = {
"sambaopts": options.SambaOptions,
"credopts": options.CredentialsOptions,
"versionopts": options.VersionOptions,
}
takes_args = ["accountname", "principal"]
def run(self, accountname, principal, credopts=None, sambaopts=None,
versionopts=None):
lp = sambaopts.get_loadparm()
creds = credopts.get_credentials(lp)
paths = provision.provision_paths_from_lp(lp, lp.get("realm"))
sam = SamDB(paths.samdb, session_info=system_session(),
credentials=creds, lp=lp)
# TODO once I understand how, use the domain info to naildown
# to the correct domain
(cleanedaccount, realm, domain) = _get_user_realm_domain(accountname)
res = sam.search(expression="sAMAccountName=%s" %
ldb.binary_encode(cleanedaccount),
scope=ldb.SCOPE_SUBTREE,
attrs=["msDS-AllowedToDelegateTo"])
if len(res) == 0:
raise CommandError("Unable to find account name '%s'" % accountname)
assert(len(res) == 1)
msg = ldb.Message()
msg.dn = res[0].dn
msg["msDS-AllowedToDelegateTo"] = ldb.MessageElement([principal],
ldb.FLAG_MOD_DELETE,
"msDS-AllowedToDelegateTo")
try:
sam.modify(msg)
except Exception, err:
raise CommandError(err)
class cmd_delegation(SuperCommand):
"""Delegation management."""
subcommands = {}
subcommands["show"] = cmd_delegation_show()
subcommands["for-any-service"] = cmd_delegation_for_any_service()
subcommands["for-any-protocol"] = cmd_delegation_for_any_protocol()
subcommands["add-service"] = cmd_delegation_add_service()
subcommands["del-service"] = cmd_delegation_del_service()
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