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
|
# Authors:
# Jason Gerard DeRose <jderose@redhat.com>
#
# Copyright (C) 2008 Red Hat
# see file 'COPYING' for use and warranty information
#
# 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; version 2 only
#
# 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, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
"""
Backend plugin for LDAP.
This wraps the python-ldap bindings.
"""
import ldap as _ldap
from ipalib import api
from ipalib import errors
from ipalib.crud import CrudBackend
from ipa_server import servercore
from ipa_server import ipaldap
class ldap(CrudBackend):
"""
LDAP backend plugin.
"""
dn = _ldap.dn
def make_user_dn(self, uid):
"""
Construct user dn from uid.
"""
return 'uid=%s,%s,%s' % (
self.dn.escape_dn_chars(uid),
self.api.env.container_user,
self.api.env.basedn,
)
def find_entry_dn(self, key_attribute, primary_key, object_type=None):
"""
Find an existing entry's dn from an attribute
"""
key_attribute = key_attribute.lower()
if not object_type:
if key_attribute == "uid": # User
filter = "posixAccount"
elif key_attribute == "cn": # Group
object_type = "posixGroup"
elif key_attribute == "krbprincipal": # Service
object_type = "krbPrincipal"
else:
return None
filter = "(&(%s=%s)(objectclass=%s))" % (
key_attribute,
self.dn.escape_dn_chars(primary_key),
object_type
)
search_base = "%s, %s" % (self.api.env.container_accounts, self.api.env.basedn)
entry = servercore.get_sub_entry(search_base, filter, ['dn', 'objectclass'])
return entry['dn']
def generate_search_filters(self, **kw):
"""Generates a search filter based on a list of words and a list
of fields to search against.
Returns a tuple of two filters: (exact_match, partial_match)
"""
# construct search pattern for a single word
# (|(f1=word)(f2=word)...)
exact_pattern = "(|"
for field in kw.keys():
exact_pattern += "(%s=%s)" % (field, kw[field])
exact_pattern += ")"
sub_pattern = "(|"
for field in kw.keys():
sub_pattern += "(%s=*%s*)" % (field, kw[field])
sub_pattern += ")"
# construct the giant match for all words
exact_match_filter = "(&" + exact_pattern + ")"
partial_match_filter = "(|" + sub_pattern + ")"
return (exact_match_filter, partial_match_filter)
def create(self, **kw):
if servercore.entry_exists(kw['dn']):
raise errors.DuplicateEntry("entry already exists")
entry = ipaldap.Entry(kw['dn'])
# dn isn't allowed to be in the entry itself
del kw['dn']
# Fill in our new entry
for k in kw:
entry.setValues(k, kw[k])
return servercore.add_entry(entry)
def retrieve(self, dn, attributes=None):
return servercore.get_entry_by_dn(dn, attributes)
def update(self, dn, **kw):
result = self.retrieve(dn, ["*"])
entry = ipaldap.Entry((dn, servercore.convert_scalar_values(result)))
for k in kw:
entry.setValues(k, kw[k])
return servercore.update_entry(entry.toDict())
def delete(self, dn):
return servercore.delete_entry(dn)
def search(self, **kw):
objectclass = kw.get('objectclass')
if objectclass:
del kw['objectclass']
(exact_match_filter, partial_match_filter) = self.generate_search_filters(**kw)
if objectclass:
exact_match_filter = "(&(objectClass=%s)%s)" % (objectclass, exact_match_filter)
partial_match_filter = "(&(objectClass=%s)%s)" % (objectclass, partial_match_filter)
search_base = "%s, %s" % (self.api.env.container_accounts, self.api.env.basedn)
try:
exact_results = servercore.search(search_base,
exact_match_filter, ["*"])
except errors.NotFound:
exact_results = [0]
try:
partial_results = servercore.search(search_base,
partial_match_filter, ["*"])
except errors.NotFound:
partial_results = [0]
exact_counter = exact_results[0]
partial_counter = partial_results[0]
exact_results = exact_results[1:]
partial_results = partial_results[1:]
# Remove exact matches from the partial_match list
exact_dns = set(map(lambda e: e.get('dn'), exact_results))
partial_results = filter(lambda e: e.get('dn') not in exact_dns,
partial_results)
if (exact_counter == -1) or (partial_counter == -1):
counter = -1
else:
counter = len(exact_results) + len(partial_results)
results = [counter]
for r in exact_results + partial_results:
results.append(r)
return results
api.register(ldap)
def delete(self, dn):
return servercore.delete_entry(dn)
api.register(ldap)
|
