source/scripting/python/samba/upgrade.py

   1 #!/usr/bin/python
   2 #
   3 #       backend code for upgrading from Samba3
   4 #       Copyright Jelmer Vernooij 2005-2007
   5 #       Released under the GNU GPL v3 or later
   6 #
   7
   8 """Support code for upgrading from Samba 3 to Samba 4."""
   9
  10 from provision import findnss, provision, FILL_DRS
  11 import grp
  12 import ldb
  13 import pwd
  14 import uuid
  15 import registry
  16 from samba import Ldb
  17 from samba.samdb import SamDB
  18
  19 def import_sam_policy(samldb, samba3_policy, domaindn):
  20     samldb.modify_ldif("""
  21 dn: %s
  22 changetype: modify
  23 replace: minPwdLength
  24 minPwdLength: %d
  25 pwdHistoryLength: %d
  26 minPwdAge: %d
  27 maxPwdAge: %d
  28 lockoutDuration: %d
  29 samba3ResetCountMinutes: %d
  30 samba3UserMustLogonToChangePassword: %d
  31 samba3BadLockoutMinutes: %d
  32 samba3DisconnectTime: %d
  33
  34 """ % (dn, policy.min_password_length,
  35     policy.password_history, policy.minimum_password_age,
  36     policy.maximum_password_age, policy.lockout_duration,
  37     policy.reset_count_minutes, policy.user_must_logon_to_change_password,
  38     policy.bad_lockout_minutes, policy.disconnect_time))
  39
  40
  41 def import_sam_account(samldb,acc,domaindn,domainsid):
  42     """Import a Samba 3 SAM account.
  43
  44     :param samldb: Samba 4 SAM Database handle
  45     :param acc: Samba 3 account
  46     :param domaindn: Domain DN
  47     :param domainsid: Domain SID."""
  48     if acc.nt_username is None or acc.nt_username == "":
  49         acc.nt_username = acc.username
  50
  51     if acc.fullname is None:
  52         try:
  53             acc.fullname = pwd.getpwnam(acc.username)[4].split(",")[0]
  54         except KeyError:
  55             pass
  56
  57     if acc.fullname is None:
  58         acc.fullname = acc.username
  59
  60     assert acc.fullname is not None
  61     assert acc.nt_username is not None
  62
  63     samldb.add({
  64         "dn": "cn=%s,%s" % (acc.fullname, domaindn),
  65         "objectClass": ["top", "user"],
  66         "lastLogon": str(acc.logon_time),
  67         "lastLogoff": str(acc.logoff_time),
  68         "unixName": acc.username,
  69         "sAMAccountName": acc.nt_username,
  70         "cn": acc.nt_username,
  71         "description": acc.acct_desc,
  72         "primaryGroupID": str(acc.group_rid),
  73         "badPwdcount": str(acc.bad_password_count),
  74         "logonCount": str(acc.logon_count),
  75         "samba3Domain": acc.domain,
  76         "samba3DirDrive": acc.dir_drive,
  77         "samba3MungedDial": acc.munged_dial,
  78         "samba3Homedir": acc.homedir,
  79         "samba3LogonScript": acc.logon_script,
  80         "samba3ProfilePath": acc.profile_path,
  81         "samba3Workstations": acc.workstations,
  82         "samba3KickOffTime": str(acc.kickoff_time),
  83         "samba3BadPwdTime": str(acc.bad_password_time),
  84         "samba3PassLastSetTime": str(acc.pass_last_set_time),
  85         "samba3PassCanChangeTime": str(acc.pass_can_change_time),
  86         "samba3PassMustChangeTime": str(acc.pass_must_change_time),
  87         "objectSid": "%s-%d" % (domainsid, acc.user_rid),
  88         "lmPwdHash:": acc.lm_password,
  89         "ntPwdHash:": acc.nt_password,
  90         })
  91
  92
  93 def import_sam_group(samldb, sid, gid, sid_name_use, nt_name, comment, domaindn):
  94     """Upgrade a SAM group.
  95
  96     :param samldb: SAM database.
  97     :param gid: Group GID
  98     :param sid_name_use: SID name use
  99     :param nt_name: NT Group Name
 100     :param comment: NT Group Comment
 101     :param domaindn: Domain DN
 102     """
 103
 104     if sid_name_use == 5: # Well-known group
 105         return None
 106
 107     if nt_name in ("Domain Guests", "Domain Users", "Domain Admins"):
 108         return None
 109
 110     if gid == -1:
 111         gr = grp.getgrnam(nt_name)
 112     else:
 113         gr = grp.getgrgid(gid)
 114
 115     if gr is None:
 116         unixname = "UNKNOWN"
 117     else:
 118         unixname = gr.gr_name
 119
 120     assert unixname is not None
 121
 122     samldb.add({
 123         "dn": "cn=%s,%s" % (nt_name, domaindn),
 124         "objectClass": ["top", "group"],
 125         "description": comment,
 126         "cn": nt_name,
 127         "objectSid": sid,
 128         "unixName": unixname,
 129         "samba3SidNameUse": str(sid_name_use)
 130         })
 131
 132
 133 def import_idmap(samdb,samba3_idmap,domaindn):
 134     """Import idmap data.
 135
 136     :param samdb: SamDB handle.
 137     :param samba3_idmap: Samba 3 IDMAP database to import from
 138     :param domaindn: Domain DN.
 139     """
 140     samdb.add({
 141         "dn": domaindn,
 142         "userHwm": str(samba3_idmap.get_user_hwm()),
 143         "groupHwm": str(samba3_idmap.get_group_hwm())})
 144
 145     for uid in samba3_idmap.uids():
 146         samdb.add({"dn": "SID=%s,%s" % (samba3_idmap.get_user_sid(uid), domaindn),
 147                           "SID": samba3_idmap.get_user_sid(uid),
 148                           "type": "user",
 149                           "unixID": str(uid)})
 150
 151     for gid in samba3_idmap.uids():
 152         samdb.add({"dn": "SID=%s,%s" % (samba3_idmap.get_group_sid(gid), domaindn),
 153                           "SID": samba3_idmap.get_group_sid(gid),
 154                           "type": "group",
 155                           "unixID": str(gid)})
 156
 157
 158 def import_wins(samba4_winsdb, samba3_winsdb):
 159     """Import settings from a Samba3 WINS database.
 160
 161     :param samba4_winsdb: WINS database to import to
 162     :param samba3_winsdb: WINS database to import from
 163     """
 164     version_id = 0
 165     import time
 166
 167     for (name, (ttl, ips, nb_flags)) in samba3_winsdb.items():
 168         version_id+=1
 169
 170         type = int(name.split("#", 1)[1], 16)
 171
 172         if type == 0x1C:
 173             rType = 0x2
 174         elif type & 0x80:
 175             if len(ips) > 1:
 176                 rType = 0x2
 177             else:
 178                 rType = 0x1
 179         else:
 180             if len(ips) > 1:
 181                 rType = 0x3
 182             else:
 183                 rType = 0x0
 184
 185         if ttl > time.time():
 186             rState = 0x0 # active
 187         else:
 188             rState = 0x1 # released
 189
 190         nType = ((nb_flags & 0x60)>>5)
 191
 192         samba4_winsdb.add({"dn": "name=%s,type=0x%s" % tuple(name.split("#")),
 193                            "type": name.split("#")[1],
 194                            "name": name.split("#")[0],
 195                            "objectClass": "winsRecord",
 196                            "recordType": str(rType),
 197                            "recordState": str(rState),
 198                            "nodeType": str(nType),
 199                            "expireTime": ldb.timestring(ttl),
 200                            "isStatic": "0",
 201                            "versionID": str(version_id),
 202                            "address": ips})
 203
 204     samba4_winsdb.add({"dn": "CN=VERSION",
 205                        "objectClass": "winsMaxVersion",
 206                        "maxVersion": str(version_id)})
 207
 208 def upgrade_provision(samba3, setup_dir, message, credentials, session_info, lp, paths):
 209     oldconf = samba3.get_conf()
 210
 211     if oldconf.get("domain logons") == "True":
 212         serverrole = "domain controller"
 213     else:
 214         if oldconf.get("security") == "user":
 215             serverrole = "standalone"
 216         else:
 217             serverrole = "member server"
 218
 219     lp.set("server role", serverrole)
 220     domainname = oldconf.get("workgroup")
 221     if domainname:
 222         domainname = str(domainname)
 223     lp.set("workgroup", domainname)
 224     realm = oldconf.get("realm")
 225     netbiosname = oldconf.get("netbios name")
 226
 227     secrets_db = samba3.get_secrets_db()
 228
 229     if domainname is None:
 230         domainname = secrets_db.domains()[0]
 231         message("No domain specified in smb.conf file, assuming '%s'" % domainname)
 232
 233     if realm is None:
 234         realm = domainname.lower()
 235         message("No realm specified in smb.conf file, assuming '%s'\n" % realm)
 236     lp.set("realm", realm)
 237
 238     domainguid = secrets_db.get_domain_guid(domainname)
 239     domainsid = secrets_db.get_sid(domainname)
 240     if domainsid is None:
 241         message("Can't find domain secrets for '%s'; using random SID\n" % domainname)
 242
 243     if netbiosname is not None:
 244         machinepass = secrets_db.get_machine_password(netbiosname)
 245     else:
 246         machinepass = None
 247
 248     domaindn = provision(lp=lp, setup_dir=setup_dir, message=message,
 249                          samdb_fill=FILL_DRS, ldapbackend=None,
 250                          paths=paths, session_info=session_info, credentials=credentials, realm=realm,
 251                          domain=domainname, domainsid=domainsid, domainguid=domainguid,
 252                          machinepass=machinepass, serverrole=serverrole)
 253
 254     samdb = SamDB(paths.samdb, credentials=credentials, lp=lp, session_info=session_info)
 255
 256     import_wins(Ldb(paths.winsdb), samba3.get_wins_db())
 257
 258     # FIXME: import_registry(registry.Registry(), samba3.get_registry())
 259
 260     # FIXME: import_idmap(samdb,samba3.get_idmap_db(),domaindn)
 261
 262     groupdb = samba3.get_groupmapping_db()
 263     for sid in groupdb.groupsids():
 264         (gid, sid_name_use, nt_name, comment) = groupdb.get_group(sid)
 265         # FIXME: import_sam_group(samdb, sid, gid, sid_name_use, nt_name, comment, domaindn)
 266
 267     # FIXME: Aliases
 268
 269     passdb = samba3.get_sam_db()
 270     for name in passdb:
 271         user = passdb[name]
 272         #FIXME: import_sam_account(samdb, user, domaindn, domainsid)
 273
 274     if hasattr(passdb, 'ldap_url'):
 275         message("Enabling Samba3 LDAP mappings for SAM database")
 276
 277         enable_samba3sam(samdb, passdb.ldap_url)
 278
 279
 280 def enable_samba3sam(samdb, ldapurl):
 281     """Enable Samba 3 LDAP URL database.
 282
 283     :param samdb: SAM Database.
 284     :param ldapurl: Samba 3 LDAP URL
 285     """
 286     samdb.modify_ldif("""
 287 dn: @MODULES
 288 changetype: modify
 289 replace: @LIST
 290 @LIST: samldb,operational,objectguid,rdn_name,samba3sam
 291 """)
 292
 293     samdb.add({"dn": "@MAP=samba3sam", "@MAP_URL": ldapurl})
 294
 295
 296 smbconf_keep = [
 297     "dos charset",
 298     "unix charset",
 299     "display charset",
 300     "comment",
 301     "path",
 302     "directory",
 303     "workgroup",
 304     "realm",
 305     "netbios name",
 306     "netbios aliases",
 307     "netbios scope",
 308     "server string",
 309     "interfaces",
 310     "bind interfaces only",
 311     "security",
 312     "auth methods",
 313     "encrypt passwords",
 314     "null passwords",
 315     "obey pam restrictions",
 316     "password server",
 317     "smb passwd file",
 318     "private dir",
 319     "passwd chat",
 320     "password level",
 321     "lanman auth",
 322     "ntlm auth",
 323     "client NTLMv2 auth",
 324     "client lanman auth",
 325     "client plaintext auth",
 326     "read only",
 327     "hosts allow",
 328     "hosts deny",
 329     "log level",
 330     "debuglevel",
 331     "log file",
 332     "smb ports",
 333     "large readwrite",
 334     "max protocol",
 335     "min protocol",
 336     "unicode",
 337     "read raw",
 338     "write raw",
 339     "disable netbios",
 340     "nt status support",
 341     "announce version",
 342     "announce as",
 343     "max mux",
 344     "max xmit",
 345     "name resolve order",
 346     "max wins ttl",
 347     "min wins ttl",
 348     "time server",
 349     "unix extensions",
 350     "use spnego",
 351     "server signing",
 352     "client signing",
 353     "max connections",
 354     "paranoid server security",
 355     "socket options",
 356     "strict sync",
 357     "max print jobs",
 358     "printable",
 359     "print ok",
 360     "printer name",
 361     "printer",
 362     "map system",
 363     "map hidden",
 364     "map archive",
 365     "preferred master",
 366     "prefered master",
 367     "local master",
 368     "browseable",
 369     "browsable",
 370     "wins server",
 371     "wins support",
 372     "csc policy",
 373     "strict locking",
 374     "preload",
 375     "auto services",
 376     "lock dir",
 377     "lock directory",
 378     "pid directory",
 379     "socket address",
 380     "copy",
 381     "include",
 382     "available",
 383     "volume",
 384     "fstype",
 385     "panic action",
 386     "msdfs root",
 387     "host msdfs",
 388     "winbind separator"]
 389
 390 def upgrade_smbconf(oldconf,mark):
 391     """Remove configuration variables not present in Samba4
 392
 393     :param oldconf: Old configuration structure
 394     :param mark: Whether removed configuration variables should be
 395         kept in the new configuration as "samba3:<name>"
 396     """
 397     data = oldconf.data()
 398     newconf = param_init()
 399
 400     for s in data:
 401         for p in data[s]:
 402             keep = False
 403             for k in smbconf_keep:
 404                 if smbconf_keep[k] == p:
 405                     keep = True
 406                     break
 407
 408             if keep:
 409                 newconf.set(s, p, oldconf.get(s, p))
 410             elif mark:
 411                 newconf.set(s, "samba3:"+p, oldconf.get(s,p))
 412
 413     return newconf
 414
 415 SAMBA3_PREDEF_NAMES = {
 416         'HKLM': registry.HKEY_LOCAL_MACHINE,
 417 }
 418
 419 def import_registry(samba4_registry, samba3_regdb):
 420     """Import a Samba 3 registry database into the Samba 4 registry.
 421
 422     :param samba4_registry: Samba 4 registry handle.
 423     :param samba3_regdb: Samba 3 registry database handle.
 424     """
 425     def ensure_key_exists(keypath):
 426         (predef_name, keypath) = keypath.split("/", 1)
 427         predef_id = SAMBA3_PREDEF_NAMES[predef_name]
 428         keypath = keypath.replace("/", "\\")
 429         return samba4_registry.create_key(predef_id, keypath)
 430
 431     for key in samba3_regdb.keys():
 432         key_handle = ensure_key_exists(key)
 433         for subkey in samba3_regdb.subkeys(key):
 434             ensure_key_exists(subkey)
 435         for (value_name, (value_type, value_data)) in samba3_regdb.values(key).items():
 436             key_handle.set_value(value_name, value_type, value_data)
 437
 438