1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
|
#!/usr/bin/python
# Unix SMB/CIFS implementation.
# Copyright (C) Jelmer Vernooij <jelmer@samba.org> 2007-2008
#
# Based on the original in EJS:
# Copyright (C) Andrew Tridgell <tridge@samba.org> 2005
#
# 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/>.
#
import os
def _in_source_tree():
"""Check whether the script is being run from the source dir. """
return os.path.exists("%s/../../../samba4-skip" % os.path.dirname(__file__))
# When running, in-tree, make sure bin/python is in the PYTHONPATH
if _in_source_tree():
import sys
srcdir = "%s/../../.." % os.path.dirname(__file__)
sys.path.append("%s/bin/python" % srcdir)
default_ldb_modules_dir = "%s/bin/modules/ldb" % srcdir
else:
default_ldb_modules_dir = None
import ldb
import credentials
import misc
class Ldb(ldb.Ldb):
"""Simple Samba-specific LDB subclass that takes care
of setting up the modules dir, credentials pointers, etc.
Please note that this is intended to be for all Samba LDB files,
not necessarily the Sam database. For Sam-specific helper
functions see samdb.py.
"""
def __init__(self, url=None, session_info=None, credentials=None,
modules_dir=None, lp=None):
"""Open a Samba Ldb file.
:param url: Optional LDB URL to open
:param session_info: Optional session information
:param credentials: Optional credentials, defaults to anonymous.
:param modules_dir: Modules directory, if not the default.
:param lp: Loadparm object, optional.
This is different from a regular Ldb file in that the Samba-specific
modules-dir is used by default and that credentials and session_info
can be passed through (required by some modules).
"""
super(Ldb, self).__init__()
if modules_dir is not None:
self.set_modules_dir(modules_dir)
elif default_ldb_modules_dir is not None:
self.set_modules_dir(default_ldb_modules_dir)
if credentials is not None:
self.set_credentials(self, credentials)
if session_info is not None:
self.set_session_info(self, session_info)
assert misc.ldb_register_samba_handlers(self) == 0
if lp is not None:
self.set_loadparm(self, lp)
def msg(l,text):
print text
#self.set_debug(msg)
if url is not None:
self.connect(url)
set_credentials = misc.ldb_set_credentials
set_session_info = misc.ldb_set_session_info
set_loadparm = misc.ldb_set_loadparm
def searchone(self, attribute, basedn=None, expression=None,
scope=ldb.SCOPE_BASE):
"""Search for one attribute as a string.
:param basedn: BaseDN for the search.
:param attribute: Name of the attribute
:param expression: Optional search expression.
:param scope: Search scope (defaults to base).
:return: Value of attribute as a string or None if it wasn't found.
"""
res = self.search(basedn, scope, expression, [attribute])
if len(res) != 1 or res[0][attribute] is None:
return None
values = set(res[0][attribute])
assert len(values) == 1
return self.schema_format_value(attribute, values.pop())
def erase(self):
"""Erase this ldb, removing all records."""
# delete the specials
for attr in ["@INDEXLIST", "@ATTRIBUTES", "@SUBCLASSES", "@MODULES",
"@OPTIONS", "@PARTITION", "@KLUDGEACL"]:
try:
self.delete(attr)
except ldb.LdbError, (LDB_ERR_NO_SUCH_OBJECT, _):
# Ignore missing dn errors
pass
basedn = ""
# and the rest
for msg in self.search(basedn, ldb.SCOPE_SUBTREE,
"(&(|(objectclass=*)(distinguishedName=*))(!(distinguishedName=@BASEINFO)))",
["distinguishedName"]):
try:
self.delete(msg.dn)
except ldb.LdbError, (LDB_ERR_NO_SUCH_OBJECT, _):
# Ignore no such object errors
pass
res = self.search(basedn, ldb.SCOPE_SUBTREE, "(&(|(objectclass=*)(distinguishedName=*))(!(distinguishedName=@BASEINFO)))", ["distinguishedName"])
assert len(res) == 0
def erase_partitions(self):
"""Erase an ldb, removing all records."""
res = self.search("", ldb.SCOPE_BASE, "(objectClass=*)",
["namingContexts"])
assert len(res) == 1
if not "namingContexts" in res[0]:
return
for basedn in res[0]["namingContexts"]:
previous_remaining = 1
current_remaining = 0
k = 0
while ++k < 10 and (previous_remaining != current_remaining):
# and the rest
try:
res2 = self.search(basedn, ldb.SCOPE_SUBTREE, "(|(objectclass=*)(distinguishedName=*))", ["distinguishedName"])
except ldb.LdbError, (LDB_ERR_NO_SUCH_OBJECT, _):
# Ignore missing dn errors
return
previous_remaining = current_remaining
current_remaining = len(res2)
for msg in res2:
try:
self.delete(msg.dn)
# Ignore no such object errors
except ldb.LdbError, (LDB_ERR_NO_SUCH_OBJECT, _):
pass
# Ignore not allowed on non leaf errors
except ldb.LdbError, (LDB_ERR_NOT_ALLOWED_ON_NON_LEAF, _):
pass
def load_ldif_file_add(self, ldif_path):
"""Load a LDIF file.
:param ldif_path: Path to LDIF file.
"""
self.add_ldif(open(ldif_path, 'r').read())
def add_ldif(self, ldif):
"""Add data based on a LDIF string.
:param ldif: LDIF text.
"""
for changetype, msg in self.parse_ldif(ldif):
assert changetype == ldb.CHANGETYPE_NONE
self.add(msg)
def modify_ldif(self, ldif):
"""Modify database based on a LDIF string.
:param ldif: LDIF text.
"""
for changetype, msg in self.parse_ldif(ldif):
self.modify(msg)
def substitute_var(text, values):
"""substitute strings of the form ${NAME} in str, replacing
with substitutions from subobj.
:param text: Text in which to subsitute.
:param values: Dictionary with keys and values.
"""
for (name, value) in values.items():
assert isinstance(name, str), "%r is not a string" % name
assert isinstance(value, str), "Value %r for %s is not a string" % (value, name)
text = text.replace("${%s}" % name, value)
return text
def check_all_substituted(text):
"""Make sure that all substitution variables in a string have been replaced.
If not, raise an exception.
:param text: The text to search for substitution variables
"""
if not "${" in text:
return
var_start = text.find("${")
var_end = text.find("}", var_start)
raise Exception("Not all variables substituted: %s" % text[var_start:var_end+1])
def valid_netbios_name(name):
"""Check whether a name is valid as a NetBIOS name. """
# FIXME: There are probably more constraints here.
# crh has a paragraph on this in his book (1.4.1.1)
if len(name) > 15:
return False
return True
version = misc.version
|
