source4/scripting/python/samba/netcmd/gpo.py

   1 # implement samba_tool gpo commands
   2 #
   3 # Copyright Andrew Tridgell 2010
   4 # Copyright Amitay Isaacs 2011-2012 <amitay@gmail.com>
   5 #
   6 # based on C implementation by Guenther Deschner and Wilco Baan Hofman
   7 #
   8 # This program is free software; you can redistribute it and/or modify
   9 # it under the terms of the GNU General Public License as published by
  10 # the Free Software Foundation; either version 3 of the License, or
  11 # (at your option) any later version.
  12 #
  13 # This program is distributed in the hope that it will be useful,
  14 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 # GNU General Public License for more details.
  17 #
  18 # You should have received a copy of the GNU General Public License
  19 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20 #
  21
  22 import os
  23 import samba.getopt as options
  24 import ldb
  25
  26 from samba.auth import system_session
  27 from samba.netcmd import (
  28     Command,
  29     CommandError,
  30     Option,
  31     SuperCommand,
  32     )
  33 from samba.samdb import SamDB
  34 from samba import dsdb
  35 from samba.dcerpc import security
  36 from samba.ndr import ndr_unpack
  37 import samba.security
  38 import samba.auth
  39 from samba.auth import AUTH_SESSION_INFO_DEFAULT_GROUPS, AUTH_SESSION_INFO_AUTHENTICATED, AUTH_SESSION_INFO_SIMPLE_PRIVILEGES
  40 from samba.netcmd.common import netcmd_finddc
  41 from samba import policy
  42 from samba import smb
  43 import uuid
  44 from samba.ntacls import dsacl2fsacl
  45
  46
  47 def samdb_connect(ctx):
  48     '''make a ldap connection to the server'''
  49     try:
  50         ctx.samdb = SamDB(url=ctx.url,
  51                           session_info=system_session(),
  52                           credentials=ctx.creds, lp=ctx.lp)
  53     except Exception, e:
  54         raise CommandError("LDAP connection to %s failed " % ctx.url, e)
  55
  56
  57 def attr_default(msg, attrname, default):
  58     '''get an attribute from a ldap msg with a default'''
  59     if attrname in msg:
  60         return msg[attrname][0]
  61     return default
  62
  63
  64 def gpo_flags_string(value):
  65     '''return gpo flags string'''
  66     flags = policy.get_gpo_flags(value)
  67     if not flags:
  68         ret = 'NONE'
  69     else:
  70         ret = ' '.join(flags)
  71     return ret
  72
  73
  74 def gplink_options_string(value):
  75     '''return gplink options string'''
  76     options = policy.get_gplink_options(value)
  77     if not options:
  78         ret = 'NONE'
  79     else:
  80         ret = ' '.join(options)
  81     return ret
  82
  83
  84 def parse_gplink(gplink):
  85     '''parse a gPLink into an array of dn and options'''
  86     ret = []
  87     a = gplink.split(']')
  88     for g in a:
  89         if not g:
  90             continue
  91         d = g.split(';')
  92         if len(d) != 2 or not d[0].startswith("[LDAP://"):
  93             raise RuntimeError("Badly formed gPLink '%s'" % g)
  94         ret.append({ 'dn' : d[0][8:], 'options' : int(d[1])})
  95     return ret
  96
  97
  98 def encode_gplink(gplist):
  99     '''Encode an array of dn and options into gPLink string'''
 100     ret = ''
 101     for g in gplist:
 102         ret += "[LDAP://%s;%d]" % (g['dn'], g['options'])
 103     return ret
 104
 105
 106 def dc_url(lp, creds, url=None, dc=None):
 107     '''If URL is not specified, return URL for writable DC.
 108     If dc is provided, use that to construct ldap URL'''
 109
 110     if url is None:
 111         if dc is None:
 112             try:
 113                 dc = netcmd_finddc(lp, creds)
 114             except Exception, e:
 115                 raise RuntimeError("Could not find a DC for domain", e)
 116         url = 'ldap://' + dc
 117     return url
 118
 119
 120 def get_gpo_dn(samdb, gpo):
 121     '''Construct the DN for gpo'''
 122
 123     dn = samdb.get_default_basedn()
 124     dn.add_child(ldb.Dn(samdb, "CN=Policies,CN=System"))
 125     dn.add_child(ldb.Dn(samdb, "CN=%s" % gpo))
 126     return dn
 127
 128
 129 def get_gpo_info(samdb, gpo=None, displayname=None, dn=None):
 130     '''Get GPO information using gpo, displayname or dn'''
 131
 132     policies_dn = samdb.get_default_basedn()
 133     policies_dn.add_child(ldb.Dn(samdb, "CN=Policies,CN=System"))
 134
 135     base_dn = policies_dn
 136     search_expr = "(objectClass=groupPolicyContainer)"
 137     search_scope = ldb.SCOPE_ONELEVEL
 138
 139     if gpo is not None:
 140         search_expr = "(&(objectClass=groupPolicyContainer)(name=%s))" % ldb.binary_encode(gpo)
 141
 142     if displayname is not None:
 143         search_expr = "(&(objectClass=groupPolicyContainer)(displayname=%s))" % ldb.binary_encode(displayname)
 144
 145     if dn is not None:
 146         base_dn = dn
 147         search_scope = ldb.SCOPE_BASE
 148
 149     try:
 150         msg = samdb.search(base=base_dn, scope=search_scope,
 151                             expression=search_expr,
 152                             attrs=['nTSecurityDescriptor',
 153                                     'versionNumber',
 154                                     'flags',
 155                                     'name',
 156                                     'displayName',
 157                                     'gPCFileSysPath'])
 158     except Exception, e:
 159         if gpo is not None:
 160             mesg = "Cannot get information for GPO %s" % gpo
 161         else:
 162             mesg = "Cannot get information for GPOs"
 163         raise CommandError(mesg, e)
 164
 165     return msg
 166
 167
 168 def get_gpo_containers(samdb, gpo):
 169     '''lists dn of containers for a GPO'''
 170
 171     search_expr = "(&(objectClass=*)(gPLink=*%s*))" % gpo
 172     try:
 173         msg = samdb.search(expression=search_expr, attrs=['gPLink'])
 174     except Exception, e:
 175         raise CommandError("Could not find container(s) with GPO %s" % gpo, e)
 176
 177     return msg
 178
 179
 180 def del_gpo_link(samdb, container_dn, gpo):
 181     '''delete GPO link for the container'''
 182     # Check if valid Container DN and get existing GPlinks
 183     try:
 184         msg = samdb.search(base=container_dn, scope=ldb.SCOPE_BASE,
 185                             expression="(objectClass=*)",
 186                             attrs=['gPLink'])[0]
 187     except Exception, e:
 188         raise CommandError("Container '%s' does not exist" % container_dn, e)
 189
 190     found = False
 191     gpo_dn = str(get_gpo_dn(samdb, gpo))
 192     if 'gPLink' in msg:
 193         gplist = parse_gplink(msg['gPLink'][0])
 194         for g in gplist:
 195             if g['dn'].lower() == gpo_dn.lower():
 196                 gplist.remove(g)
 197                 found = True
 198                 break
 199     else:
 200         raise CommandError("No GPO(s) linked to this container")
 201
 202     if not found:
 203         raise CommandError("GPO '%s' not linked to this container" % gpo)
 204
 205     m = ldb.Message()
 206     m.dn = container_dn
 207     if gplist:
 208         gplink_str = encode_gplink(gplist)
 209         m['r0'] = ldb.MessageElement(gplink_str, ldb.FLAG_MOD_REPLACE, 'gPLink')
 210     else:
 211         m['d0'] = ldb.MessageElement(msg['gPLink'][0], ldb.FLAG_MOD_DELETE, 'gPLink')
 212     try:
 213         samdb.modify(m)
 214     except Exception, e:
 215         raise CommandError("Error removing GPO from container", e)
 216
 217
 218 def parse_unc(unc):
 219     '''Parse UNC string into a hostname, a service, and a filepath'''
 220     if unc.startswith('\\\\') and unc.startswith('//'):
 221         raise ValueError("UNC doesn't start with \\\\ or //")
 222     tmp = unc[2:].split('/', 2)
 223     if len(tmp) == 3:
 224         return tmp
 225     tmp = unc[2:].split('\\', 2)
 226     if len(tmp) == 3:
 227         return tmp
 228     raise ValueError("Invalid UNC string: %s" % unc)
 229
 230
 231 def copy_directory_remote_to_local(conn, remotedir, localdir):
 232     if not os.path.isdir(localdir):
 233         os.mkdir(localdir)
 234     r_dirs = [ remotedir ]
 235     l_dirs = [ localdir ]
 236     while r_dirs:
 237         r_dir = r_dirs.pop()
 238         l_dir = l_dirs.pop()
 239
 240         dirlist = conn.list(r_dir)
 241         for e in dirlist:
 242             r_name = r_dir + '\\' + e['name']
 243             l_name = os.path.join(l_dir, e['name'])
 244
 245             if e['attrib'] & smb.FILE_ATTRIBUTE_DIRECTORY:
 246                 r_dirs.append(r_name)
 247                 l_dirs.append(l_name)
 248                 os.mkdir(l_name)
 249             else:
 250                 data = conn.loadfile(r_name)
 251                 file(l_name, 'w').write(data)
 252
 253
 254 def copy_directory_local_to_remote(conn, localdir, remotedir):
 255     if not conn.chkpath(remotedir):
 256         conn.mkdir(remotedir)
 257     l_dirs = [ localdir ]
 258     r_dirs = [ remotedir ]
 259     while l_dirs:
 260         l_dir = l_dirs.pop()
 261         r_dir = r_dirs.pop()
 262
 263         dirlist = os.listdir(l_dir)
 264         for e in dirlist:
 265             l_name = os.path.join(l_dir, e)
 266             r_name = r_dir + '\\' + e
 267
 268             if os.path.isdir(l_name):
 269                 l_dirs.append(l_name)
 270                 r_dirs.append(r_name)
 271                 conn.mkdir(r_name)
 272             else:
 273                 data = file(l_name, 'r').read()
 274                 conn.savefile(r_name, data)
 275
 276
 277 def create_directory_hier(conn, remotedir):
 278     elems = remotedir.replace('/', '\\').split('\\')
 279     path = ""
 280     for e in elems:
 281         path = path + '\\' + e
 282         if not conn.chkpath(path):
 283             conn.mkdir(path)
 284
 285
 286 class cmd_listall(Command):
 287     """List all GPOs."""
 288
 289     synopsis = "%prog [options]"
 290
 291     takes_optiongroups = {
 292         "sambaopts": options.SambaOptions,
 293         "versionopts": options.VersionOptions,
 294         "credopts": options.CredentialsOptions,
 295     }
 296
 297     takes_options = [
 298         Option("-H", "--URL", help="LDB URL for database or target server", type=str,
 299                metavar="URL", dest="H")
 300         ]
 301
 302     def run(self, H=None, sambaopts=None, credopts=None, versionopts=None):
 303
 304         self.lp = sambaopts.get_loadparm()
 305         self.creds = credopts.get_credentials(self.lp, fallback_machine=True)
 306
 307         self.url = dc_url(self.lp, self.creds, H)
 308
 309         samdb_connect(self)
 310
 311         msg = get_gpo_info(self.samdb, None)
 312
 313         for m in msg:
 314             self.outf.write("GPO          : %s\n" % m['name'][0])
 315             self.outf.write("display name : %s\n" % m['displayName'][0])
 316             self.outf.write("path         : %s\n" % m['gPCFileSysPath'][0])
 317             self.outf.write("dn           : %s\n" % m.dn)
 318             self.outf.write("version      : %s\n" % attr_default(m, 'versionNumber', '0'))
 319             self.outf.write("flags        : %s\n" % gpo_flags_string(int(attr_default(m, 'flags', 0))))
 320             self.outf.write("\n")
 321
 322
 323 class cmd_list(Command):
 324     """List GPOs for an account."""
 325
 326     synopsis = "%prog <username> [options]"
 327
 328     takes_args = ['username']
 329     takes_optiongroups = {
 330         "sambaopts": options.SambaOptions,
 331         "versionopts": options.VersionOptions,
 332         "credopts": options.CredentialsOptions,
 333     }
 334
 335     takes_options = [
 336         Option("-H", "--URL", help="LDB URL for database or target server",
 337             type=str, metavar="URL", dest="H")
 338         ]
 339
 340     def run(self, username, H=None, sambaopts=None, credopts=None, versionopts=None):
 341
 342         self.lp = sambaopts.get_loadparm()
 343         self.creds = credopts.get_credentials(self.lp, fallback_machine=True)
 344
 345         self.url = dc_url(self.lp, self.creds, H)
 346
 347         samdb_connect(self)
 348
 349         try:
 350             msg = self.samdb.search(expression='(&(|(samAccountName=%s)(samAccountName=%s$))(objectClass=User))' %
 351                                                 (ldb.binary_encode(username),ldb.binary_encode(username)))
 352             user_dn = msg[0].dn
 353         except Exception:
 354             raise CommandError("Failed to find account %s" % username)
 355
 356         # check if its a computer account
 357         try:
 358             msg = self.samdb.search(base=user_dn, scope=ldb.SCOPE_BASE, attrs=['objectClass'])[0]
 359             is_computer = 'computer' in msg['objectClass']
 360         except Exception:
 361             raise CommandError("Failed to find objectClass for user %s" % username)
 362
 363         session_info_flags = ( AUTH_SESSION_INFO_DEFAULT_GROUPS |
 364                                AUTH_SESSION_INFO_AUTHENTICATED )
 365
 366         # When connecting to a remote server, don't look up the local privilege DB
 367         if self.url is not None and self.url.startswith('ldap'):
 368             session_info_flags |= AUTH_SESSION_INFO_SIMPLE_PRIVILEGES
 369
 370         session = samba.auth.user_session(self.samdb, lp_ctx=self.lp, dn=user_dn,
 371                                           session_info_flags=session_info_flags)
 372
 373         token = session.security_token
 374
 375         gpos = []
 376
 377         inherit = True
 378         dn = ldb.Dn(self.samdb, str(user_dn)).parent()
 379         while True:
 380             msg = self.samdb.search(base=dn, scope=ldb.SCOPE_BASE, attrs=['gPLink', 'gPOptions'])[0]
 381             if 'gPLink' in msg:
 382                 glist = parse_gplink(msg['gPLink'][0])
 383                 for g in glist:
 384                     if not inherit and not (g['options'] & dsdb.GPLINK_OPT_ENFORCE):
 385                         continue
 386                     if g['options'] & dsdb.GPLINK_OPT_DISABLE:
 387                         continue
 388
 389                     try:
 390                         gmsg = self.samdb.search(base=g['dn'], scope=ldb.SCOPE_BASE,
 391                                                  attrs=['name', 'displayName', 'flags',
 392                                                         'ntSecurityDescriptor'])
 393                     except Exception:
 394                         self.outf.write("Failed to fetch gpo object %s\n" %
 395                             g['dn'])
 396                         continue
 397
 398                     secdesc_ndr = gmsg[0]['ntSecurityDescriptor'][0]
 399                     secdesc = ndr_unpack(security.descriptor, secdesc_ndr)
 400
 401                     try:
 402                         samba.security.access_check(secdesc, token,
 403                                                     security.SEC_STD_READ_CONTROL |
 404                                                     security.SEC_ADS_LIST |
 405                                                     security.SEC_ADS_READ_PROP)
 406                     except RuntimeError:
 407                         self.outf.write("Failed access check on %s\n" % msg.dn)
 408                         continue
 409
 410                     # check the flags on the GPO
 411                     flags = int(attr_default(gmsg[0], 'flags', 0))
 412                     if is_computer and (flags & dsdb.GPO_FLAG_MACHINE_DISABLE):
 413                         continue
 414                     if not is_computer and (flags & dsdb.GPO_FLAG_USER_DISABLE):
 415                         continue
 416                     gpos.append((gmsg[0]['displayName'][0], gmsg[0]['name'][0]))
 417
 418             # check if this blocks inheritance
 419             gpoptions = int(attr_default(msg, 'gPOptions', 0))
 420             if gpoptions & dsdb.GPO_BLOCK_INHERITANCE:
 421                 inherit = False
 422
 423             if dn == self.samdb.get_default_basedn():
 424                 break
 425             dn = dn.parent()
 426
 427         if is_computer:
 428             msg_str = 'computer'
 429         else:
 430             msg_str = 'user'
 431
 432         self.outf.write("GPOs for %s %s\n" % (msg_str, username))
 433         for g in gpos:
 434             self.outf.write("    %s %s\n" % (g[0], g[1]))
 435
 436
 437 class cmd_show(Command):
 438     """Show information for a GPO."""
 439
 440     synopsis = "%prog <gpo> [options]"
 441
 442     takes_optiongroups = {
 443         "sambaopts": options.SambaOptions,
 444         "versionopts": options.VersionOptions,
 445         "credopts": options.CredentialsOptions,
 446     }
 447
 448     takes_args = ['gpo']
 449
 450     takes_options = [
 451         Option("-H", help="LDB URL for database or target server", type=str)
 452         ]
 453
 454     def run(self, gpo, H=None, sambaopts=None, credopts=None, versionopts=None):
 455
 456         self.lp = sambaopts.get_loadparm()
 457         self.creds = credopts.get_credentials(self.lp, fallback_machine=True)
 458
 459         self.url = dc_url(self.lp, self.creds, H)
 460
 461         samdb_connect(self)
 462
 463         try:
 464             msg = get_gpo_info(self.samdb, gpo)[0]
 465         except Exception:
 466             raise CommandError("GPO '%s' does not exist" % gpo)
 467
 468         secdesc_ndr = msg['ntSecurityDescriptor'][0]
 469         secdesc = ndr_unpack(security.descriptor, secdesc_ndr)
 470
 471         self.outf.write("GPO          : %s\n" % msg['name'][0])
 472         self.outf.write("display name : %s\n" % msg['displayName'][0])
 473         self.outf.write("path         : %s\n" % msg['gPCFileSysPath'][0])
 474         self.outf.write("dn           : %s\n" % msg.dn)
 475         self.outf.write("version      : %s\n" % attr_default(msg, 'versionNumber', '0'))
 476         self.outf.write("flags        : %s\n" % gpo_flags_string(int(attr_default(msg, 'flags', 0))))
 477         self.outf.write("ACL          : %s\n" % secdesc.as_sddl())
 478         self.outf.write("\n")
 479
 480
 481 class cmd_getlink(Command):
 482     """List GPO Links for a container."""
 483
 484     synopsis = "%prog <container_dn> [options]"
 485
 486     takes_optiongroups = {
 487         "sambaopts": options.SambaOptions,
 488         "versionopts": options.VersionOptions,
 489         "credopts": options.CredentialsOptions,
 490     }
 491
 492     takes_args = ['container_dn']
 493
 494     takes_options = [
 495         Option("-H", help="LDB URL for database or target server", type=str)
 496         ]
 497
 498     def run(self, container_dn, H=None, sambaopts=None, credopts=None,
 499                 versionopts=None):
 500
 501         self.lp = sambaopts.get_loadparm()
 502         self.creds = credopts.get_credentials(self.lp, fallback_machine=True)
 503
 504         self.url = dc_url(self.lp, self.creds, H)
 505
 506         samdb_connect(self)
 507
 508         try:
 509             msg = self.samdb.search(base=container_dn, scope=ldb.SCOPE_BASE,
 510                                     expression="(objectClass=*)",
 511                                     attrs=['gPLink'])[0]
 512         except Exception:
 513             raise CommandError("Container '%s' does not exist" % container_dn)
 514
 515         if msg['gPLink']:
 516             self.outf.write("GPO(s) linked to DN %s\n" % container_dn)
 517             gplist = parse_gplink(msg['gPLink'][0])
 518             for g in gplist:
 519                 msg = get_gpo_info(self.samdb, dn=g['dn'])
 520                 self.outf.write("    GPO     : %s\n" % msg[0]['name'][0])
 521                 self.outf.write("    Name    : %s\n" % msg[0]['displayName'][0])
 522                 self.outf.write("    Options : %s\n" % gplink_options_string(g['options']))
 523                 self.outf.write("\n")
 524         else:
 525             self.outf.write("No GPO(s) linked to DN=%s\n" % container_dn)
 526
 527
 528 class cmd_setlink(Command):
 529     """Add or update a GPO link to a container."""
 530
 531     synopsis = "%prog <container_dn> <gpo> [options]"
 532
 533     takes_optiongroups = {
 534         "sambaopts": options.SambaOptions,
 535         "versionopts": options.VersionOptions,
 536         "credopts": options.CredentialsOptions,
 537     }
 538
 539     takes_args = ['container_dn', 'gpo']
 540
 541     takes_options = [
 542         Option("-H", help="LDB URL for database or target server", type=str),
 543         Option("--disable", dest="disabled", default=False, action='store_true',
 544             help="Disable policy"),
 545         Option("--enforce", dest="enforced", default=False, action='store_true',
 546             help="Enforce policy")
 547         ]
 548
 549     def run(self, container_dn, gpo, H=None, disabled=False, enforced=False,
 550                 sambaopts=None, credopts=None, versionopts=None):
 551
 552         self.lp = sambaopts.get_loadparm()
 553         self.creds = credopts.get_credentials(self.lp, fallback_machine=True)
 554
 555         self.url = dc_url(self.lp, self.creds, H)
 556
 557         samdb_connect(self)
 558
 559         gplink_options = 0
 560         if disabled:
 561             gplink_options |= dsdb.GPLINK_OPT_DISABLE
 562         if enforced:
 563             gplink_options |= dsdb.GPLINK_OPT_ENFORCE
 564
 565         # Check if valid GPO DN
 566         try:
 567             msg = get_gpo_info(self.samdb, gpo=gpo)[0]
 568         except Exception:
 569             raise CommandError("GPO '%s' does not exist" % gpo)
 570         gpo_dn = str(get_gpo_dn(self.samdb, gpo))
 571
 572         # Check if valid Container DN
 573         try:
 574             msg = self.samdb.search(base=container_dn, scope=ldb.SCOPE_BASE,
 575                                     expression="(objectClass=*)",
 576                                     attrs=['gPLink'])[0]
 577         except Exception:
 578             raise CommandError("Container '%s' does not exist" % container_dn)
 579
 580         # Update existing GPlinks or Add new one
 581         existing_gplink = False
 582         if 'gPLink' in msg:
 583             gplist = parse_gplink(msg['gPLink'][0])
 584             existing_gplink = True
 585             found = False
 586             for g in gplist:
 587                 if g['dn'].lower() == gpo_dn.lower():
 588                     g['options'] = gplink_options
 589                     found = True
 590                     break
 591             if found:
 592                 raise CommandError("GPO '%s' already linked to this container" % gpo)
 593             else:
 594                 gplist.insert(0, { 'dn' : gpo_dn, 'options' : gplink_options })
 595         else:
 596             gplist = []
 597             gplist.append({ 'dn' : gpo_dn, 'options' : gplink_options })
 598
 599         gplink_str = encode_gplink(gplist)
 600
 601         m = ldb.Message()
 602         m.dn = ldb.Dn(self.samdb, container_dn)
 603
 604         if existing_gplink:
 605             m['new_value'] = ldb.MessageElement(gplink_str, ldb.FLAG_MOD_REPLACE, 'gPLink')
 606         else:
 607             m['new_value'] = ldb.MessageElement(gplink_str, ldb.FLAG_MOD_ADD, 'gPLink')
 608
 609         try:
 610             self.samdb.modify(m)
 611         except Exception, e:
 612             raise CommandError("Error adding GPO Link", e)
 613
 614         self.outf.write("Added/Updated GPO link\n")
 615         cmd_getlink().run(container_dn, H, sambaopts, credopts, versionopts)
 616
 617
 618 class cmd_dellink(Command):
 619     """Delete GPO link from a container."""
 620
 621     synopsis = "%prog <container_dn> <gpo> [options]"
 622
 623     takes_optiongroups = {
 624         "sambaopts": options.SambaOptions,
 625         "versionopts": options.VersionOptions,
 626         "credopts": options.CredentialsOptions,
 627     }
 628
 629     takes_args = ['container', 'gpo']
 630
 631     takes_options = [
 632         Option("-H", help="LDB URL for database or target server", type=str),
 633         ]
 634
 635     def run(self, container, gpo, H=None, sambaopts=None, credopts=None,
 636                 versionopts=None):
 637
 638         self.lp = sambaopts.get_loadparm()
 639         self.creds = credopts.get_credentials(self.lp, fallback_machine=True)
 640
 641         self.url = dc_url(self.lp, self.creds, H)
 642
 643         samdb_connect(self)
 644
 645         # Check if valid GPO
 646         try:
 647             get_gpo_info(self.samdb, gpo=gpo)[0]
 648         except Exception:
 649             raise CommandError("GPO '%s' does not exist" % gpo)
 650
 651         container_dn = ldb.Dn(self.samdb, container)
 652         del_gpo_link(self.samdb, container_dn, gpo)
 653         self.outf.write("Deleted GPO link.\n")
 654         cmd_getlink().run(container_dn, H, sambaopts, credopts, versionopts)
 655
 656
 657 class cmd_listcontainers(Command):
 658     """List all linked containers for a GPO."""
 659
 660     synopsis = "%prog <gpo> [options]"
 661
 662     takes_optiongroups = {
 663         "sambaopts": options.SambaOptions,
 664         "versionopts": options.VersionOptions,
 665         "credopts": options.CredentialsOptions,
 666     }
 667
 668     takes_args = ['gpo']
 669
 670     takes_options = [
 671         Option("-H", help="LDB URL for database or target server", type=str)
 672         ]
 673
 674     def run(self, gpo, H=None, sambaopts=None, credopts=None,
 675                 versionopts=None):
 676
 677         self.lp = sambaopts.get_loadparm()
 678         self.creds = credopts.get_credentials(self.lp, fallback_machine=True)
 679
 680         self.url = dc_url(self.lp, self.creds, H)
 681
 682         samdb_connect(self)
 683
 684         msg = get_gpo_containers(self.samdb, gpo)
 685         if len(msg):
 686             self.outf.write("Container(s) using GPO %s\n" % gpo)
 687             for m in msg:
 688                 self.outf.write("    DN: %s\n" % m['dn'])
 689         else:
 690             self.outf.write("No Containers using GPO %s\n" % gpo)
 691
 692
 693 class cmd_getinheritance(Command):
 694     """Get inheritance flag for a container."""
 695
 696     synopsis = "%prog <container_dn> [options]"
 697
 698     takes_optiongroups = {
 699         "sambaopts": options.SambaOptions,
 700         "versionopts": options.VersionOptions,
 701         "credopts": options.CredentialsOptions,
 702     }
 703
 704     takes_args = ['container_dn']
 705
 706     takes_options = [
 707         Option("-H", help="LDB URL for database or target server", type=str)
 708         ]
 709
 710     def run(self, container_dn, H=None, sambaopts=None, credopts=None,
 711                 versionopts=None):
 712
 713         self.lp = sambaopts.get_loadparm()
 714         self.creds = credopts.get_credentials(self.lp, fallback_machine=True)
 715
 716         self.url = dc_url(self.lp, self.creds, H)
 717
 718         samdb_connect(self)
 719
 720         try:
 721             msg = self.samdb.search(base=container_dn, scope=ldb.SCOPE_BASE,
 722                                     expression="(objectClass=*)",
 723                                     attrs=['gPOptions'])[0]
 724         except Exception:
 725             raise CommandError("Container '%s' does not exist" % container_dn)
 726
 727         inheritance = 0
 728         if 'gPOptions' in msg:
 729             inheritance = int(msg['gPOptions'][0])
 730
 731         if inheritance == dsdb.GPO_BLOCK_INHERITANCE:
 732             self.outf.write("Container has GPO_BLOCK_INHERITANCE\n")
 733         else:
 734             self.outf.write("Container has GPO_INHERIT\n")
 735
 736
 737 class cmd_setinheritance(Command):
 738     """Set inheritance flag on a container."""
 739
 740     synopsis = "%prog <container_dn> <block|inherit> [options]"
 741
 742     takes_optiongroups = {
 743         "sambaopts": options.SambaOptions,
 744         "versionopts": options.VersionOptions,
 745         "credopts": options.CredentialsOptions,
 746     }
 747
 748     takes_args = [ 'container_dn', 'inherit_state' ]
 749
 750     takes_options = [
 751         Option("-H", help="LDB URL for database or target server", type=str)
 752         ]
 753
 754     def run(self, container_dn, inherit_state, H=None, sambaopts=None, credopts=None,
 755                 versionopts=None):
 756
 757         if inherit_state.lower() == 'block':
 758             inheritance = dsdb.GPO_BLOCK_INHERITANCE
 759         elif inherit_state.lower() == 'inherit':
 760             inheritance = dsdb.GPO_INHERIT
 761         else:
 762             raise CommandError("Unknown inheritance state (%s)" % inherit_state)
 763
 764         self.lp = sambaopts.get_loadparm()
 765         self.creds = credopts.get_credentials(self.lp, fallback_machine=True)
 766
 767         self.url = dc_url(self.lp, self.creds, H)
 768
 769         samdb_connect(self)
 770         try:
 771             msg = self.samdb.search(base=container_dn, scope=ldb.SCOPE_BASE,
 772                                     expression="(objectClass=*)",
 773                                     attrs=['gPOptions'])[0]
 774         except Exception:
 775             raise CommandError("Container '%s' does not exist" % container_dn)
 776
 777         m = ldb.Message()
 778         m.dn = ldb.Dn(self.samdb, container_dn)
 779
 780         if 'gPOptions' in msg:
 781             m['new_value'] = ldb.MessageElement(str(inheritance), ldb.FLAG_MOD_REPLACE, 'gPOptions')
 782         else:
 783             m['new_value'] = ldb.MessageElement(str(inheritance), ldb.FLAG_MOD_ADD, 'gPOptions')
 784
 785         try:
 786             self.samdb.modify(m)
 787         except Exception, e:
 788             raise CommandError("Error setting inheritance state %s" % inherit_state, e)
 789
 790
 791 class cmd_fetch(Command):
 792     """Download a GPO."""
 793
 794     synopsis = "%prog <gpo> [options]"
 795
 796     takes_optiongroups = {
 797         "sambaopts": options.SambaOptions,
 798         "versionopts": options.VersionOptions,
 799         "credopts": options.CredentialsOptions,
 800     }
 801
 802     takes_args = ['gpo']
 803
 804     takes_options = [
 805         Option("-H", help="LDB URL for database or target server", type=str),
 806         Option("--tmpdir", help="Temporary directory for copying policy files", type=str)
 807         ]
 808
 809     def run(self, gpo, H=None, tmpdir=None, sambaopts=None, credopts=None, versionopts=None):
 810
 811         self.lp = sambaopts.get_loadparm()
 812         self.creds = credopts.get_credentials(self.lp, fallback_machine=True)
 813
 814         # We need to know writable DC to setup SMB connection
 815         if H and H.startswith('ldap://'):
 816             dc_hostname = H[7:]
 817             self.url = H
 818         else:
 819             dc_hostname = netcmd_finddc(self.lp, self.creds)
 820             self.url = dc_url(self.lp, self.creds, dc=dc_hostname)
 821
 822         samdb_connect(self)
 823         try:
 824             msg = get_gpo_info(self.samdb, gpo)[0]
 825         except Exception:
 826             raise CommandError("GPO '%s' does not exist" % gpo)
 827
 828         # verify UNC path
 829         unc = msg['gPCFileSysPath'][0]
 830         try:
 831             [dom_name, service, sharepath] = parse_unc(unc)
 832         except ValueError:
 833             raise CommandError("Invalid GPO path (%s)" % unc)
 834
 835         # SMB connect to DC
 836         try:
 837             conn = smb.SMB(dc_hostname, service, lp=self.lp, creds=self.creds)
 838         except Exception:
 839             raise CommandError("Error connecting to '%s' using SMB" % dc_hostname)
 840
 841         # Copy GPT
 842         if tmpdir is None:
 843             tmpdir = "/tmp"
 844         if not os.path.isdir(tmpdir):
 845             raise CommandError("Temoprary directory '%s' does not exist" % tmpdir)
 846
 847         localdir = os.path.join(tmpdir, "policy")
 848         if not os.path.isdir(localdir):
 849             os.mkdir(localdir)
 850
 851         gpodir = os.path.join(localdir, gpo)
 852         if os.path.isdir(gpodir):
 853             raise CommandError("GPO directory '%s' already exists, refusing to overwrite" % gpodir)
 854
 855         try:
 856             os.mkdir(gpodir)
 857             copy_directory_remote_to_local(conn, sharepath, gpodir)
 858         except Exception, e:
 859             # FIXME: Catch more specific exception
 860             raise CommandError("Error copying GPO from DC", e)
 861         self.outf.write('GPO copied to %s\n' % gpodir)
 862
 863
 864 class cmd_create(Command):
 865     """Create an empty GPO."""
 866
 867     synopsis = "%prog <displayname> [options]"
 868
 869     takes_optiongroups = {
 870         "sambaopts": options.SambaOptions,
 871         "versionopts": options.VersionOptions,
 872         "credopts": options.CredentialsOptions,
 873     }
 874
 875     takes_args = ['displayname']
 876
 877     takes_options = [
 878         Option("-H", help="LDB URL for database or target server", type=str),
 879         Option("--tmpdir", help="Temporary directory for copying policy files", type=str)
 880         ]
 881
 882     def run(self, displayname, H=None, tmpdir=None, sambaopts=None, credopts=None,
 883             versionopts=None):
 884
 885         self.lp = sambaopts.get_loadparm()
 886         self.creds = credopts.get_credentials(self.lp, fallback_machine=True)
 887
 888         # We need to know writable DC to setup SMB connection
 889         if H and H.startswith('ldap://'):
 890             dc_hostname = H[7:]
 891             self.url = H
 892         else:
 893             dc_hostname = netcmd_finddc(self.lp, self.creds)
 894             self.url = dc_url(self.lp, self.creds, dc=dc_hostname)
 895
 896         samdb_connect(self)
 897
 898         msg = get_gpo_info(self.samdb, displayname=displayname)
 899         if msg.count > 0:
 900             raise CommandError("A GPO already existing with name '%s'" % displayname)
 901
 902         # Create new GUID
 903         guid  = str(uuid.uuid4())
 904         gpo = "{%s}" % guid.upper()
 905         realm = self.lp.get('realm')
 906         unc_path = "\\\\%s\\sysvol\\%s\\Policies\\%s" % (realm, realm, gpo)
 907
 908         # Create GPT
 909         if tmpdir is None:
 910             tmpdir = "/tmp"
 911         if not os.path.isdir(tmpdir):
 912             raise CommandError("Temporary directory '%s' does not exist" % tmpdir)
 913
 914         localdir = os.path.join(tmpdir, "policy")
 915         if not os.path.isdir(localdir):
 916             os.mkdir(localdir)
 917
 918         gpodir = os.path.join(localdir, gpo)
 919         if os.path.isdir(gpodir):
 920             raise CommandError("GPO directory '%s' already exists, refusing to overwrite" % gpodir)
 921
 922         try:
 923             os.mkdir(gpodir)
 924             os.mkdir(os.path.join(gpodir, "Machine"))
 925             os.mkdir(os.path.join(gpodir, "User"))
 926             gpt_contents = "[General]\r\nVersion=0\r\n"
 927             file(os.path.join(gpodir, "GPT.INI"), "w").write(gpt_contents)
 928         except Exception, e:
 929             raise CommandError("Error Creating GPO files", e)
 930
 931         # Connect to DC over SMB
 932         [dom_name, service, sharepath] = parse_unc(unc_path)
 933         try:
 934             conn = smb.SMB(dc_hostname, service, lp=self.lp, creds=self.creds)
 935         except Exception, e:
 936             raise CommandError("Error connecting to '%s' using SMB" % dc_hostname, e)
 937
 938         self.samdb.transaction_start()
 939         try:
 940             # Add cn=<guid>
 941             gpo_dn = get_gpo_dn(self.samdb, gpo)
 942
 943             m = ldb.Message()
 944             m.dn = gpo_dn
 945             m['a01'] = ldb.MessageElement("groupPolicyContainer", ldb.FLAG_MOD_ADD, "objectClass")
 946             m['a02'] = ldb.MessageElement(displayname, ldb.FLAG_MOD_ADD, "displayName")
 947             m['a03'] = ldb.MessageElement(unc_path, ldb.FLAG_MOD_ADD, "gPCFileSysPath")
 948             m['a04'] = ldb.MessageElement("0", ldb.FLAG_MOD_ADD, "flags")
 949             m['a05'] = ldb.MessageElement("0", ldb.FLAG_MOD_ADD, "versionNumber")
 950             m['a06'] = ldb.MessageElement("TRUE", ldb.FLAG_MOD_ADD, "showInAdvancedViewOnly")
 951             m['a07'] = ldb.MessageElement("2", ldb.FLAG_MOD_ADD, "gpcFunctionalityVersion")
 952             self.samdb.add(m)
 953
 954             # Add cn=User,cn=<guid>
 955             m = ldb.Message()
 956             m.dn = ldb.Dn(self.samdb, "CN=User,%s" % str(gpo_dn))
 957             m['a01'] = ldb.MessageElement("container", ldb.FLAG_MOD_ADD, "objectClass")
 958             m['a02'] = ldb.MessageElement("TRUE", ldb.FLAG_MOD_ADD, "showInAdvancedViewOnly")
 959             self.samdb.add(m)
 960
 961             # Add cn=Machine,cn=<guid>
 962             m = ldb.Message()
 963             m.dn = ldb.Dn(self.samdb, "CN=Machine,%s" % str(gpo_dn))
 964             m['a01'] = ldb.MessageElement("container", ldb.FLAG_MOD_ADD, "objectClass")
 965             m['a02'] = ldb.MessageElement("TRUE", ldb.FLAG_MOD_ADD, "showInAdvancedViewOnly")
 966             self.samdb.add(m)
 967
 968             # Copy GPO files over SMB
 969             create_directory_hier(conn, sharepath)
 970             copy_directory_local_to_remote(conn, gpodir, sharepath)
 971
 972             # Get new security descriptor
 973             msg = get_gpo_info(self.samdb, gpo=gpo)[0]
 974             ds_sd_ndr = msg['ntSecurityDescriptor'][0]
 975             ds_sd = ndr_unpack(security.descriptor, ds_sd_ndr).as_sddl()
 976
 977             # Create a file system security descriptor
 978             domain_sid = self.samdb.get_domain_sid()
 979             sddl = dsacl2fsacl(ds_sd, domain_sid)
 980             fs_sd = security.descriptor.from_sddl(sddl, security.dom_sid(domain_sid))
 981
 982             # Set ACL
 983             sio = ( security.SECINFO_OWNER |
 984                     security.SECINFO_GROUP |
 985                     security.SECINFO_DACL |
 986                     security.SECINFO_PROTECTED_DACL )
 987             conn.set_acl(sharepath, fs_sd, sio)
 988         except Exception:
 989             self.samdb.transaction_cancel()
 990             raise
 991         else:
 992             self.samdb.transaction_commit()
 993
 994         self.outf.write("GPO '%s' created as %s\n" % (displayname, gpo))
 995
 996
 997 class cmd_del(Command):
 998     """Delete a GPO."""
 999
1000     synopsis = "%prog <gpo> [options]"
1001
1002     takes_optiongroups = {
1003         "sambaopts": options.SambaOptions,
1004         "versionopts": options.VersionOptions,
1005         "credopts": options.CredentialsOptions,
1006     }
1007
1008     takes_args = ['gpo']
1009
1010     takes_options = [
1011         Option("-H", help="LDB URL for database or target server", type=str),
1012         ]
1013
1014     def run(self, gpo, H=None, sambaopts=None, credopts=None,
1015                 versionopts=None):
1016
1017         self.lp = sambaopts.get_loadparm()
1018         self.creds = credopts.get_credentials(self.lp, fallback_machine=True)
1019
1020         # We need to know writable DC to setup SMB connection
1021         if H and H.startswith('ldap://'):
1022             dc_hostname = H[7:]
1023             self.url = H
1024         else:
1025             dc_hostname = netcmd_finddc(self.lp, self.creds)
1026             self.url = dc_url(self.lp, self.creds, dc=dc_hostname)
1027
1028         samdb_connect(self)
1029
1030         # Check if valid GPO
1031         try:
1032             get_gpo_info(self.samdb, gpo=gpo)[0]
1033         except Exception:
1034             raise CommandError("GPO '%s' does not exist" % gpo)
1035
1036         realm = self.lp.get('realm')
1037         unc_path = "\\\\%s\\sysvol\\%s\\Policies\\%s" % (realm, realm, gpo)
1038
1039         # Connect to DC over SMB
1040         [dom_name, service, sharepath] = parse_unc(unc_path)
1041         try:
1042             conn = smb.SMB(dc_hostname, service, lp=self.lp, creds=self.creds)
1043         except Exception, e:
1044             raise CommandError("Error connecting to '%s' using SMB" % dc_hostname, e)
1045
1046         self.samdb.transaction_start()
1047         try:
1048             # Check for existing links
1049             msg = get_gpo_containers(self.samdb, gpo)
1050
1051             if len(msg):
1052                 self.outf.write("GPO %s is linked to containers\n" % gpo)
1053                 for m in msg:
1054                     del_gpo_link(self.samdb, m['dn'], gpo)
1055                     self.outf.write("    Removed link from %s.\n" % m['dn'])
1056
1057             # Remove LDAP entries
1058             gpo_dn = get_gpo_dn(self.samdb, gpo)
1059             self.samdb.delete(ldb.Dn(self.samdb, "CN=User,%s" % str(gpo_dn)))
1060             self.samdb.delete(ldb.Dn(self.samdb, "CN=Machine,%s" % str(gpo_dn)))
1061             self.samdb.delete(gpo_dn)
1062
1063             # Remove GPO files
1064             conn.deltree(sharepath)
1065
1066         except Exception:
1067             self.samdb.transaction_cancel()
1068             raise
1069         else:
1070             self.samdb.transaction_commit()
1071
1072         self.outf.write("GPO %s deleted.\n" % gpo)
1073
1074
1075 class cmd_gpo(SuperCommand):
1076     """Group Policy Object (GPO) management"""
1077
1078     subcommands = {}
1079     subcommands["listall"] = cmd_listall()
1080     subcommands["list"] = cmd_list()
1081     subcommands["show"] = cmd_show()
1082     subcommands["getlink"] = cmd_getlink()
1083     subcommands["setlink"] = cmd_setlink()
1084     subcommands["dellink"] = cmd_dellink()
1085     subcommands["listcontainers"] = cmd_listcontainers()
1086     subcommands["getinheritance"] = cmd_getinheritance()
1087     subcommands["setinheritance"] = cmd_setinheritance()
1088     subcommands["fetch"] = cmd_fetch()
1089     subcommands["create"] = cmd_create()
1090     subcommands["del"] = cmd_del()