3 # Unix SMB/CIFS implementation.
4 # Copyright (C) Jelmer Vernooij <jelmer@samba.org> 2007-2008
6 # Based on the original in EJS:
7 # Copyright (C) Andrew Tridgell <tridge@samba.org> 2005
9 # This program is free software; you can redistribute it and/or modify
10 # it under the terms of the GNU General Public License as published by
11 # the Free Software Foundation; either version 3 of the License, or
12 # (at your option) any later version.
14 # This program is distributed in the hope that it will be useful,
15 # but WITHOUT ANY WARRANTY; without even the implied warranty of
16 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 # GNU General Public License for more details.
19 # You should have received a copy of the GNU General Public License
20 # along with this program. If not, see <http://www.gnu.org/licenses/>.
25 __docformat__ = "restructuredText"
29 def _in_source_tree():
30 """Check whether the script is being run from the source dir. """
31 return os.path.exists("%s/../../../selftest/skip" % os.path.dirname(__file__))
34 # When running, in-tree, make sure bin/python is in the PYTHONPATH
37 srcdir = "%s/../../.." % os.path.dirname(__file__)
38 sys.path.append("%s/bin/python" % srcdir)
39 default_ldb_modules_dir = "%s/bin/modules/ldb" % srcdir
41 default_ldb_modules_dir = None
48 """Simple Samba-specific LDB subclass that takes care
49 of setting up the modules dir, credentials pointers, etc.
51 Please note that this is intended to be for all Samba LDB files,
52 not necessarily the Sam database. For Sam-specific helper
53 functions see samdb.py.
55 def __init__(self, url=None, lp=None, modules_dir=None, session_info=None,
56 credentials=None, flags=0, options=None):
57 """Opens a Samba Ldb file.
59 :param url: Optional LDB URL to open
60 :param lp: Optional loadparm object
61 :param modules_dir: Optional modules directory
62 :param session_info: Optional session information
63 :param credentials: Optional credentials, defaults to anonymous.
64 :param flags: Optional LDB flags
65 :param options: Additional options (optional)
67 This is different from a regular Ldb file in that the Samba-specific
68 modules-dir is used by default and that credentials and session_info
69 can be passed through (required by some modules).
72 if modules_dir is not None:
73 self.set_modules_dir(modules_dir)
74 elif default_ldb_modules_dir is not None:
75 self.set_modules_dir(default_ldb_modules_dir)
77 self.set_modules_dir(os.path.join(lp.get("modules dir"), "ldb"))
79 if session_info is not None:
80 self.set_session_info(session_info)
82 if credentials is not None:
83 self.set_credentials(credentials)
88 # This must be done before we load the schema, as these handlers for
89 # objectSid and objectGUID etc must take precedence over the 'binary
90 # attribute' declaration in the schema
91 glue.ldb_register_samba_handlers(self)
98 glue.ldb_set_utf8_casefold(self)
100 # Allow admins to force non-sync ldb for all databases
102 nosync_p = lp.get("nosync", "ldb")
103 if nosync_p is not None and nosync_p == true:
107 self.connect(url, flags, options)
109 def set_credentials(self, credentials):
110 glue.ldb_set_credentials(self, credentials)
112 def set_session_info(self, session_info):
113 glue.ldb_set_session_info(self, session_info)
115 def set_loadparm(self, lp_ctx):
116 glue.ldb_set_loadparm(self, lp_ctx)
118 def searchone(self, attribute, basedn=None, expression=None,
119 scope=ldb.SCOPE_BASE):
120 """Search for one attribute as a string.
122 :param basedn: BaseDN for the search.
123 :param attribute: Name of the attribute
124 :param expression: Optional search expression.
125 :param scope: Search scope (defaults to base).
126 :return: Value of attribute as a string or None if it wasn't found.
128 res = self.search(basedn, scope, expression, [attribute])
129 if len(res) != 1 or res[0][attribute] is None:
131 values = set(res[0][attribute])
132 assert len(values) == 1
133 return self.schema_format_value(attribute, values.pop())
135 def erase_users_computers(self, dn):
136 """Erases user and computer objects from our AD. This is needed since the 'samldb' module denies the deletion of primary groups. Therefore all groups shouldn't be primary somewhere anymore."""
139 res = self.search(base=dn, scope=ldb.SCOPE_SUBTREE, attrs=[],
140 expression="(|(objectclass=user)(objectclass=computer))")
141 except ldb.LdbError, (ldb.ERR_NO_SUCH_OBJECT, _):
142 # Ignore no such object errors
149 except ldb.LdbError, (ldb.ERR_NO_SUCH_OBJECT, _):
150 # Ignore no such object errors
153 def erase_except_schema_controlled(self):
154 """Erase this ldb, removing all records, except those that are controlled by Samba4's schema."""
158 # Try to delete user/computer accounts to allow deletion of groups
159 self.erase_users_computers(basedn)
161 # Delete the 'visible' records, and the invisble 'deleted' records (if this DB supports it)
162 for msg in self.search(basedn, ldb.SCOPE_SUBTREE,
163 "(&(|(objectclass=*)(distinguishedName=*))(!(distinguishedName=@BASEINFO)))",
164 [], controls=["show_deleted:0"]):
167 except ldb.LdbError, (ldb.ERR_NO_SUCH_OBJECT, _):
168 # Ignore no such object errors
171 res = self.search(basedn, ldb.SCOPE_SUBTREE,
172 "(&(|(objectclass=*)(distinguishedName=*))(!(distinguishedName=@BASEINFO)))",
173 [], controls=["show_deleted:0"])
176 # delete the specials
177 for attr in ["@SUBCLASSES", "@MODULES",
178 "@OPTIONS", "@PARTITION", "@KLUDGEACL"]:
181 except ldb.LdbError, (ldb.ERR_NO_SUCH_OBJECT, _):
182 # Ignore missing dn errors
186 """Erase this ldb, removing all records."""
188 self.erase_except_schema_controlled()
190 # delete the specials
191 for attr in ["@INDEXLIST", "@ATTRIBUTES"]:
194 except ldb.LdbError, (ldb.ERR_NO_SUCH_OBJECT, _):
195 # Ignore missing dn errors
198 def erase_partitions(self):
199 """Erase an ldb, removing all records."""
201 def erase_recursive(self, dn):
203 res = self.search(base=dn, scope=ldb.SCOPE_ONELEVEL, attrs=[],
204 controls=["show_deleted:0"])
205 except ldb.LdbError, (ldb.ERR_NO_SUCH_OBJECT, _):
206 # Ignore no such object errors
211 erase_recursive(self, msg.dn)
215 except ldb.LdbError, (ldb.ERR_NO_SUCH_OBJECT, _):
216 # Ignore no such object errors
219 res = self.search("", ldb.SCOPE_BASE, "(objectClass=*)",
222 if not "namingContexts" in res[0]:
224 for basedn in res[0]["namingContexts"]:
225 # Try to delete user/computer accounts to allow deletion of groups
226 self.erase_users_computers(basedn)
227 # Try and erase from the bottom-up in the tree
228 erase_recursive(self, basedn)
230 def load_ldif_file_add(self, ldif_path):
233 :param ldif_path: Path to LDIF file.
235 self.add_ldif(open(ldif_path, 'r').read())
237 def add_ldif(self, ldif,controls=None):
238 """Add data based on a LDIF string.
240 :param ldif: LDIF text.
242 for changetype, msg in self.parse_ldif(ldif):
243 assert changetype == ldb.CHANGETYPE_NONE
244 self.add(msg,controls)
246 def modify_ldif(self, ldif):
247 """Modify database based on a LDIF string.
249 :param ldif: LDIF text.
251 for changetype, msg in self.parse_ldif(ldif):
254 def set_domain_sid(self, sid):
255 """Change the domain SID used by this LDB.
257 :param sid: The new domain sid to use.
259 glue.samdb_set_domain_sid(self, sid)
261 def domain_sid(self):
262 """Read the domain SID used by this LDB.
265 glue.samdb_get_domain_sid(self)
267 def set_schema_from_ldif(self, pf, df):
268 glue.dsdb_set_schema_from_ldif(self, pf, df)
270 def set_schema_from_ldb(self, ldb):
271 glue.dsdb_set_schema_from_ldb(self, ldb)
273 def write_prefixes_from_schema(self):
274 glue.dsdb_write_prefixes_from_schema_to_ldb(self)
276 def convert_schema_to_openldap(self, target, mapping):
277 return glue.dsdb_convert_schema_to_openldap(self, target, mapping)
279 def set_invocation_id(self, invocation_id):
280 """Set the invocation id for this SamDB handle.
282 :param invocation_id: GUID of the invocation id.
284 glue.dsdb_set_ntds_invocation_id(self, invocation_id)
286 def set_opaque_integer(self, name, value):
287 """Set an integer as an opaque (a flag or other value) value on the database
289 :param name: The name for the opaque value
290 :param value: The integer value
292 glue.dsdb_set_opaque_integer(self, name, value)
295 def substitute_var(text, values):
296 """substitute strings of the form ${NAME} in str, replacing
297 with substitutions from subobj.
299 :param text: Text in which to subsitute.
300 :param values: Dictionary with keys and values.
303 for (name, value) in values.items():
304 assert isinstance(name, str), "%r is not a string" % name
305 assert isinstance(value, str), "Value %r for %s is not a string" % (value, name)
306 text = text.replace("${%s}" % name, value)
311 def check_all_substituted(text):
312 """Make sure that all substitution variables in a string have been replaced.
313 If not, raise an exception.
315 :param text: The text to search for substitution variables
320 var_start = text.find("${")
321 var_end = text.find("}", var_start)
323 raise Exception("Not all variables substituted: %s" % text[var_start:var_end+1])
326 def read_and_sub_file(file, subst_vars):
327 """Read a file and sub in variables found in it
329 :param file: File to be read (typically from setup directory)
330 param subst_vars: Optional variables to subsitute in the file.
332 data = open(file, 'r').read()
333 if subst_vars is not None:
334 data = substitute_var(data, subst_vars)
335 check_all_substituted(data)
339 def valid_netbios_name(name):
340 """Check whether a name is valid as a NetBIOS name. """
341 # See crh's book (1.4.1.1)
345 if not x.isalnum() and not x in " !#$%&'()-.@^_{}~":
350 def dom_sid_to_rid(sid_str):
351 """Converts a domain SID to the relative RID.
353 :param sid_str: The domain SID formatted as string
356 return glue.dom_sid_to_rid(sid_str)
359 version = glue.version
361 # "userAccountControl" flags
362 UF_NORMAL_ACCOUNT = glue.UF_NORMAL_ACCOUNT
363 UF_TEMP_DUPLICATE_ACCOUNT = glue.UF_TEMP_DUPLICATE_ACCOUNT
364 UF_SERVER_TRUST_ACCOUNT = glue.UF_SERVER_TRUST_ACCOUNT
365 UF_WORKSTATION_TRUST_ACCOUNT = glue.UF_WORKSTATION_TRUST_ACCOUNT
366 UF_INTERDOMAIN_TRUST_ACCOUNT = glue.UF_INTERDOMAIN_TRUST_ACCOUNT
367 UF_PASSWD_NOTREQD = glue.UF_PASSWD_NOTREQD
368 UF_ACCOUNTDISABLE = glue.UF_ACCOUNTDISABLE
371 GTYPE_SECURITY_BUILTIN_LOCAL_GROUP = glue.GTYPE_SECURITY_BUILTIN_LOCAL_GROUP
372 GTYPE_SECURITY_GLOBAL_GROUP = glue.GTYPE_SECURITY_GLOBAL_GROUP
373 GTYPE_SECURITY_DOMAIN_LOCAL_GROUP = glue.GTYPE_SECURITY_DOMAIN_LOCAL_GROUP
374 GTYPE_SECURITY_UNIVERSAL_GROUP = glue.GTYPE_SECURITY_UNIVERSAL_GROUP
375 GTYPE_DISTRIBUTION_GLOBAL_GROUP = glue.GTYPE_DISTRIBUTION_GLOBAL_GROUP
376 GTYPE_DISTRIBUTION_DOMAIN_LOCAL_GROUP = glue.GTYPE_DISTRIBUTION_DOMAIN_LOCAL_GROUP
377 GTYPE_DISTRIBUTION_UNIVERSAL_GROUP = glue.GTYPE_DISTRIBUTION_UNIVERSAL_GROUP
379 # "sAMAccountType" flags
380 ATYPE_NORMAL_ACCOUNT = glue.ATYPE_NORMAL_ACCOUNT
381 ATYPE_WORKSTATION_TRUST = glue.ATYPE_WORKSTATION_TRUST
382 ATYPE_INTERDOMAIN_TRUST = glue.ATYPE_INTERDOMAIN_TRUST
383 ATYPE_SECURITY_GLOBAL_GROUP = glue.ATYPE_SECURITY_GLOBAL_GROUP
384 ATYPE_SECURITY_LOCAL_GROUP = glue.ATYPE_SECURITY_LOCAL_GROUP
385 ATYPE_SECURITY_UNIVERSAL_GROUP = glue.ATYPE_SECURITY_UNIVERSAL_GROUP
386 ATYPE_DISTRIBUTION_GLOBAL_GROUP = glue.ATYPE_DISTRIBUTION_GLOBAL_GROUP
387 ATYPE_DISTRIBUTION_LOCAL_GROUP = glue.ATYPE_DISTRIBUTION_LOCAL_GROUP
388 ATYPE_DISTRIBUTION_UNIVERSAL_GROUP = glue.ATYPE_DISTRIBUTION_UNIVERSAL_GROUP
390 # "domainFunctionality", "forestFunctionality" flags in the rootDSE */
391 DS_DOMAIN_FUNCTION_2000 = glue.DS_DOMAIN_FUNCTION_2000
392 DS_DOMAIN_FUNCTION_2003_MIXED = glue.DS_DOMAIN_FUNCTION_2003_MIXED
393 DS_DOMAIN_FUNCTION_2003 = glue.DS_DOMAIN_FUNCTION_2003
394 DS_DOMAIN_FUNCTION_2008 = glue.DS_DOMAIN_FUNCTION_2008
395 DS_DOMAIN_FUNCTION_2008_R2 = glue.DS_DOMAIN_FUNCTION_2008_R2
397 # "domainControllerFunctionality" flags in the rootDSE */
398 DS_DC_FUNCTION_2000 = glue.DS_DC_FUNCTION_2000
399 DS_DC_FUNCTION_2003 = glue.DS_DC_FUNCTION_2003
400 DS_DC_FUNCTION_2008 = glue.DS_DC_FUNCTION_2008
401 DS_DC_FUNCTION_2008_R2 = glue.DS_DC_FUNCTION_2008_R2