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
|
/*
Unix SMB/CIFS implementation.
LDAP server
Copyright (C) Stefan Metzmacher 2004
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 2 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, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "includes.h"
#include "ldap_server/ldap_server.h"
#include "auth/auth.h"
#include "libcli/ldap/ldap.h"
#include "smbd/service_stream.h"
#include "lib/ldb/include/ldb.h"
#include "lib/ldb/include/ldb_errors.h"
#include "dsdb/samdb/samdb.h"
static NTSTATUS ldapsrv_BindSimple(struct ldapsrv_call *call)
{
struct ldap_BindRequest *req = &call->request->r.BindRequest;
struct ldapsrv_reply *reply;
struct ldap_BindResponse *resp;
int result;
const char *errstr;
const char *nt4_domain, *nt4_account;
struct auth_session_info *session_info;
NTSTATUS status;
DEBUG(10, ("BindSimple dn: %s\n",req->dn));
status = crack_dn_to_nt4_name(call, req->dn, &nt4_domain, &nt4_account);
if (NT_STATUS_IS_OK(status)) {
status = authenticate_username_pw(call, nt4_domain, nt4_account,
req->creds.password, &session_info);
}
/* When we add authentication here, we also need to handle telling the backends */
reply = ldapsrv_init_reply(call, LDAP_TAG_BindResponse);
if (!reply) {
return NT_STATUS_NO_MEMORY;
}
if (NT_STATUS_IS_OK(status)) {
result = LDAP_SUCCESS;
errstr = NULL;
talloc_free(call->conn->session_info);
call->conn->session_info = session_info;
/* don't leak the old LDB */
talloc_free(call->conn->ldb);
status = ldapsrv_backend_Init(call->conn);
if (!NT_STATUS_IS_OK(status)) {
result = LDAP_OPERATIONS_ERROR;
errstr = talloc_asprintf(reply, "Simple Bind: Failed to advise ldb new credentials: %s", nt_errstr(status));
}
} else {
status = auth_nt_status_squash(status);
result = LDAP_INVALID_CREDENTIALS;
errstr = talloc_asprintf(reply, "Simple Bind Failed: %s", nt_errstr(status));
}
resp = &reply->msg->r.BindResponse;
resp->response.resultcode = result;
resp->response.errormessage = errstr;
resp->response.dn = NULL;
resp->response.referral = NULL;
/* This looks wrong... */
resp->SASL.secblob = data_blob(NULL, 0);
ldapsrv_queue_reply(call, reply);
return NT_STATUS_OK;
}
static NTSTATUS ldapsrv_BindSASL(struct ldapsrv_call *call)
{
struct ldap_BindRequest *req = &call->request->r.BindRequest;
struct ldapsrv_reply *reply;
struct ldap_BindResponse *resp;
struct ldapsrv_connection *conn;
int result;
const char *errstr;
NTSTATUS status = NT_STATUS_OK;
DEBUG(10, ("BindSASL dn: %s\n",req->dn));
if (!call->conn->gensec) {
call->conn->session_info = NULL;
status = gensec_server_start(call->conn, &call->conn->gensec,
call->conn->connection->event.ctx);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(1, ("Failed to start GENSEC server code: %s\n", nt_errstr(status)));
return status;
}
gensec_set_target_service(call->conn->gensec, "ldap");
gensec_set_credentials(call->conn->gensec, call->conn->server_credentials);
gensec_want_feature(call->conn->gensec, GENSEC_FEATURE_SIGN);
gensec_want_feature(call->conn->gensec, GENSEC_FEATURE_SEAL);
gensec_want_feature(call->conn->gensec, GENSEC_FEATURE_ASYNC_REPLIES);
status = gensec_start_mech_by_sasl_name(call->conn->gensec, req->creds.SASL.mechanism);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(1, ("Failed to start GENSEC SASL[%s] server code: %s\n",
req->creds.SASL.mechanism, nt_errstr(status)));
}
}
reply = ldapsrv_init_reply(call, LDAP_TAG_BindResponse);
if (!reply) {
return NT_STATUS_NO_MEMORY;
}
resp = &reply->msg->r.BindResponse;
conn = call->conn;
if (NT_STATUS_IS_OK(status)) {
status = gensec_update(call->conn->gensec, reply,
req->creds.SASL.secblob, &resp->SASL.secblob);
}
if (NT_STATUS_EQUAL(NT_STATUS_MORE_PROCESSING_REQUIRED, status)) {
result = LDAP_SASL_BIND_IN_PROGRESS;
errstr = NULL;
} else if (NT_STATUS_IS_OK(status)) {
struct auth_session_info *old_session_info;
result = LDAP_SUCCESS;
errstr = NULL;
if (gensec_have_feature(call->conn->gensec, GENSEC_FEATURE_SEAL) ||
gensec_have_feature(call->conn->gensec, GENSEC_FEATURE_SIGN)) {
call->conn->enable_wrap = True;
}
old_session_info = call->conn->session_info;
call->conn->session_info = NULL;
status = gensec_session_info(call->conn->gensec, &call->conn->session_info);
if (!NT_STATUS_IS_OK(status)) {
call->conn->session_info = old_session_info;
result = LDAP_OPERATIONS_ERROR;
errstr = talloc_asprintf(reply, "SASL:[%s]: Failed to get session info: %s", req->creds.SASL.mechanism, nt_errstr(status));
} else {
talloc_free(old_session_info);
/* don't leak the old LDB */
talloc_free(call->conn->ldb);
status = ldapsrv_backend_Init(call->conn);
if (!NT_STATUS_IS_OK(status)) {
result = LDAP_OPERATIONS_ERROR;
errstr = talloc_asprintf(reply, "SASL:[%s]: Failed to advise samdb of new credentials: %s", req->creds.SASL.mechanism, nt_errstr(status));
}
}
} else {
status = auth_nt_status_squash(status);
result = LDAP_INVALID_CREDENTIALS;
errstr = talloc_asprintf(reply, "SASL:[%s]: %s", req->creds.SASL.mechanism, nt_errstr(status));
}
resp->response.resultcode = result;
resp->response.dn = NULL;
resp->response.errormessage = errstr;
resp->response.referral = NULL;
ldapsrv_queue_reply(call, reply);
return NT_STATUS_OK;
}
NTSTATUS ldapsrv_BindRequest(struct ldapsrv_call *call)
{
struct ldap_BindRequest *req = &call->request->r.BindRequest;
struct ldapsrv_reply *reply;
struct ldap_BindResponse *resp;
switch (req->mechanism) {
case LDAP_AUTH_MECH_SIMPLE:
return ldapsrv_BindSimple(call);
case LDAP_AUTH_MECH_SASL:
return ldapsrv_BindSASL(call);
}
reply = ldapsrv_init_reply(call, LDAP_TAG_BindResponse);
if (!reply) {
return NT_STATUS_NO_MEMORY;
}
resp = &reply->msg->r.BindResponse;
resp->response.resultcode = 7;
resp->response.dn = NULL;
resp->response.errormessage = talloc_asprintf(reply, "Bad AuthenticationChoice [%d]", req->mechanism);
resp->response.referral = NULL;
resp->SASL.secblob = data_blob(NULL, 0);
ldapsrv_queue_reply(call, reply);
return NT_STATUS_OK;
}
NTSTATUS ldapsrv_UnbindRequest(struct ldapsrv_call *call)
{
DEBUG(10, ("UnbindRequest\n"));
return NT_STATUS_OK;
}
|
