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# Manipulate file NT ACLs
#
# Copyright Matthieu Patou 2010 <mat@matws.net>
#
# 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/>.
#
from samba.credentials import DONT_USE_KERBEROS
import samba.getopt as options
from samba.dcerpc import security, idmap
from samba.ntacls import setntacl, getntacl
from samba import Ldb
from samba.ndr import ndr_unpack, ndr_print
from samba.samdb import SamDB
from samba.samba3 import param as s3param, passdb, smbd
from samba import provision
from ldb import SCOPE_BASE
import os
from samba.auth import system_session
from samba.netcmd import (
Command,
CommandError,
SuperCommand,
Option,
)
class cmd_ntacl_set(Command):
"""Set ACLs on a file"""
synopsis = "%prog <acl> <file> [options]"
takes_optiongroups = {
"sambaopts": options.SambaOptions,
"credopts": options.CredentialsOptions,
"versionopts": options.VersionOptions,
}
takes_options = [
Option("--quiet", help="Be quiet", action="store_true"),
Option("--xattr-backend", type="choice", help="xattr backend type (native fs or tdb)",
choices=["native","tdb"]),
Option("--eadb-file", help="Name of the tdb file where attributes are stored", type="string"),
Option("--use-ntvfs", help="Set the ACLs directly to the TDB or xattr for use with the ntvfs file server", action="store_true"),
Option("--use-s3fs", help="Set the ACLs for use with the default s3fs file server via the VFS layer", action="store_true")
]
takes_args = ["acl","file"]
def run(self, acl, file, use_ntvfs=False, use_s3fs=False,
quiet=False,xattr_backend=None,eadb_file=None,
credopts=None, sambaopts=None, versionopts=None):
logger = self.get_logger()
lp = sambaopts.get_loadparm()
try:
samdb = SamDB(session_info=system_session(),
lp=lp)
except Exception, e:
raise CommandError("Unable to open samdb:", e)
if not use_ntvfs and not use_s3fs:
use_ntvfs = "smb" in lp.get("server services")
elif use_s3fs:
use_ntvfs = False
try:
domain_sid = security.dom_sid(samdb.domain_sid)
except:
raise CommandError("Unable to read domain SID from configuration files")
s3conf = s3param.get_context()
s3conf.load(lp.configfile)
# ensure we are using the right samba_dsdb passdb backend, no matter what
s3conf.set("passdb backend", "samba_dsdb:%s" % samdb.url)
setntacl(lp, file, acl, str(domain_sid), xattr_backend, eadb_file, use_ntvfs=use_ntvfs)
if use_ntvfs:
logger.warning("Please note that POSIX permissions have NOT been changed, only the stored NT ACL")
class cmd_ntacl_get(Command):
"""Get ACLs of a file"""
synopsis = "%prog <file> [options]"
takes_optiongroups = {
"sambaopts": options.SambaOptions,
"credopts": options.CredentialsOptions,
"versionopts": options.VersionOptions,
}
takes_options = [
Option("--as-sddl", help="Output ACL in the SDDL format", action="store_true"),
Option("--xattr-backend", type="choice", help="xattr backend type (native fs or tdb)",
choices=["native","tdb"]),
Option("--eadb-file", help="Name of the tdb file where attributes are stored", type="string"),
Option("--use-ntvfs", help="Get the ACLs directly from the TDB or xattr used with the ntvfs file server", action="store_true"),
Option("--use-s3fs", help="Get the ACLs for use via the VFS layer used by the default s3fs file server", action="store_true")
]
takes_args = ["file"]
def run(self, file, use_ntvfs=False, use_s3fs=False,
as_sddl=False, xattr_backend=None, eadb_file=None,
credopts=None, sambaopts=None, versionopts=None):
lp = sambaopts.get_loadparm()
try:
samdb = SamDB(session_info=system_session(),
lp=lp)
except Exception, e:
raise CommandError("Unable to open samdb:", e)
if not use_ntvfs and not use_s3fs:
use_ntvfs = "smb" in lp.get("server services")
elif use_s3fs:
use_ntvfs = False
s3conf = s3param.get_context()
s3conf.load(lp.configfile)
# ensure we are using the right samba_dsdb passdb backend, no matter what
s3conf.set("passdb backend", "samba_dsdb:%s" % samdb.url)
acl = getntacl(lp, file, xattr_backend, eadb_file, direct_db_access=use_ntvfs)
if as_sddl:
try:
domain_sid = security.dom_sid(samdb.domain_sid)
except:
raise CommandError("Unable to read domain SID from configuration files")
self.outf.write(acl.as_sddl(domain_sid)+"\n")
else:
self.outf.write(ndr_print(acl))
class cmd_ntacl_sysvolreset(Command):
"""Reset sysvol ACLs to defaults (including correct ACLs on GPOs)"""
synopsis = "%prog <file> [options]"
takes_optiongroups = {
"sambaopts": options.SambaOptions,
"credopts": options.CredentialsOptions,
"versionopts": options.VersionOptions,
}
takes_options = [
Option("--use-ntvfs", help="Set the ACLs for use with the ntvfs file server", action="store_true"),
Option("--use-s3fs", help="Set the ACLs for use with the default s3fs file server", action="store_true")
]
def run(self, use_ntvfs=False, use_s3fs=False,
credopts=None, sambaopts=None, versionopts=None):
lp = sambaopts.get_loadparm()
path = lp.private_path("secrets.ldb")
creds = credopts.get_credentials(lp)
creds.set_kerberos_state(DONT_USE_KERBEROS)
logger = self.get_logger()
netlogon = lp.get("path", "netlogon")
sysvol = lp.get("path", "sysvol")
try:
samdb = SamDB(session_info=system_session(),
lp=lp)
except Exception, e:
raise CommandError("Unable to open samdb:", e)
if not use_ntvfs and not use_s3fs:
use_ntvfs = "smb" in lp.get("server services")
elif use_s3fs:
use_ntvfs = False
domain_sid = security.dom_sid(samdb.domain_sid)
s3conf = s3param.get_context()
s3conf.load(lp.configfile)
# ensure we are using the right samba_dsdb passdb backend, no matter what
s3conf.set("passdb backend", "samba_dsdb:%s" % samdb.url)
LA_sid = security.dom_sid(str(domain_sid)
+"-"+str(security.DOMAIN_RID_ADMINISTRATOR))
BA_sid = security.dom_sid(security.SID_BUILTIN_ADMINISTRATORS)
s4_passdb = passdb.PDB(s3conf.get("passdb backend"))
# These assertions correct for current plugin_s4_dc selftest
# configuration. When other environments have a broad range of
# groups mapped via passdb, we can relax some of these checks
(LA_uid,LA_type) = s4_passdb.sid_to_id(LA_sid)
if (LA_type != idmap.ID_TYPE_UID and LA_type != idmap.ID_TYPE_BOTH):
raise CommandError("SID %s is not mapped to a UID" % LA_sid)
(BA_gid,BA_type) = s4_passdb.sid_to_id(BA_sid)
if (BA_type != idmap.ID_TYPE_GID and BA_type != idmap.ID_TYPE_BOTH):
raise CommandError("SID %s is not mapped to a GID" % BA_sid)
if use_ntvfs:
logger.warning("Please note that POSIX permissions have NOT been changed, only the stored NT ACL")
provision.setsysvolacl(samdb, netlogon, sysvol,
LA_uid, BA_gid, domain_sid,
lp.get("realm").lower(), samdb.domain_dn(),
lp, use_ntvfs=use_ntvfs)
class cmd_ntacl_sysvolcheck(Command):
"""Check sysvol ACLs match defaults (including correct ACLs on GPOs)"""
synopsis = "%prog <file> [options]"
takes_optiongroups = {
"sambaopts": options.SambaOptions,
"credopts": options.CredentialsOptions,
"versionopts": options.VersionOptions,
}
def run(self,
credopts=None, sambaopts=None, versionopts=None):
lp = sambaopts.get_loadparm()
path = lp.private_path("secrets.ldb")
creds = credopts.get_credentials(lp)
creds.set_kerberos_state(DONT_USE_KERBEROS)
logger = self.get_logger()
netlogon = lp.get("path", "netlogon")
sysvol = lp.get("path", "sysvol")
try:
samdb = SamDB(session_info=system_session(),
lp=lp)
except Exception, e:
raise CommandError("Unable to open samdb:", e)
domain_sid = security.dom_sid(samdb.domain_sid)
provision.checksysvolacl(samdb, netlogon, sysvol,
domain_sid,
lp.get("realm").lower(), samdb.domain_dn(),
lp)
class cmd_ntacl(SuperCommand):
"""NT ACLs manipulation"""
subcommands = {}
subcommands["set"] = cmd_ntacl_set()
subcommands["get"] = cmd_ntacl_get()
subcommands["sysvolreset"] = cmd_ntacl_sysvolreset()
subcommands["sysvolcheck"] = cmd_ntacl_sysvolcheck()
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