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Current File : /proc/23608/task/23608/root/usr/lib/python2.7/dist-packages/samba/netcmd/ntacl.py

# 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"),
        Option("--service", help="Name of the smb.conf service to use when applying the ACLs", type="string")
        ]

    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,
            service=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, service=service)

        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"),
        Option("--service", help="Name of the smb.conf service to use when getting the ACLs", type="string")
        ]

    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,
            service=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, service=service)
        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 ad_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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