2 Unix SMB/CIFS implementation.
4 Copyright (C) Stefan Metzmacher 2004
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program. If not, see <http://www.gnu.org/licenses/>.
21 #include "ldap_server/ldap_server.h"
22 #include "auth/auth.h"
23 #include "libcli/ldap/ldap.h"
24 #include "smbd/service.h"
25 #include "lib/ldb/include/ldb.h"
26 #include "lib/ldb/include/ldb_errors.h"
27 #include "dsdb/samdb/samdb.h"
28 #include "auth/gensec/gensec.h"
29 #include "param/param.h"
31 static NTSTATUS ldapsrv_BindSimple(struct ldapsrv_call *call)
33 struct ldap_BindRequest *req = &call->request->r.BindRequest;
34 struct ldapsrv_reply *reply;
35 struct ldap_BindResponse *resp;
39 const char *nt4_domain, *nt4_account;
41 struct auth_session_info *session_info;
45 DEBUG(10, ("BindSimple dn: %s\n",req->dn));
47 status = crack_auto_name_to_nt4_name(call, call->conn->connection->event.ctx, call->conn->lp_ctx, req->dn, &nt4_domain, &nt4_account);
48 if (NT_STATUS_IS_OK(status)) {
49 status = authenticate_username_pw(call,
50 call->conn->connection->event.ctx,
51 call->conn->connection->msg_ctx,
53 nt4_domain, nt4_account,
58 reply = ldapsrv_init_reply(call, LDAP_TAG_BindResponse);
60 return NT_STATUS_NO_MEMORY;
63 if (NT_STATUS_IS_OK(status)) {
64 result = LDAP_SUCCESS;
67 talloc_free(call->conn->session_info);
68 call->conn->session_info = session_info;
69 talloc_steal(call->conn, session_info);
71 /* don't leak the old LDB */
72 talloc_free(call->conn->ldb);
74 status = ldapsrv_backend_Init(call->conn);
76 if (!NT_STATUS_IS_OK(status)) {
77 result = LDAP_OPERATIONS_ERROR;
78 errstr = talloc_asprintf(reply, "Simple Bind: Failed to advise ldb new credentials: %s", nt_errstr(status));
81 status = auth_nt_status_squash(status);
83 result = LDAP_INVALID_CREDENTIALS;
84 errstr = talloc_asprintf(reply, "Simple Bind Failed: %s", nt_errstr(status));
87 resp = &reply->msg->r.BindResponse;
88 resp->response.resultcode = result;
89 resp->response.errormessage = errstr;
90 resp->response.dn = NULL;
91 resp->response.referral = NULL;
92 resp->SASL.secblob = NULL;
94 ldapsrv_queue_reply(call, reply);
98 struct ldapsrv_sasl_context {
99 struct ldapsrv_connection *conn;
100 struct socket_context *sasl_socket;
103 static void ldapsrv_set_sasl(void *private)
105 struct ldapsrv_sasl_context *ctx = talloc_get_type(private, struct ldapsrv_sasl_context);
106 talloc_steal(ctx->conn->connection, ctx->sasl_socket);
107 talloc_unlink(ctx->conn->connection, ctx->conn->connection->socket);
109 ctx->conn->sockets.sasl = ctx->sasl_socket;
110 ctx->conn->connection->socket = ctx->sasl_socket;
111 packet_set_socket(ctx->conn->packet, ctx->conn->connection->socket);
114 static NTSTATUS ldapsrv_BindSASL(struct ldapsrv_call *call)
116 struct ldap_BindRequest *req = &call->request->r.BindRequest;
117 struct ldapsrv_reply *reply;
118 struct ldap_BindResponse *resp;
119 struct ldapsrv_connection *conn;
121 const char *errstr=NULL;
122 NTSTATUS status = NT_STATUS_OK;
124 DEBUG(10, ("BindSASL dn: %s\n",req->dn));
126 reply = ldapsrv_init_reply(call, LDAP_TAG_BindResponse);
128 return NT_STATUS_NO_MEMORY;
130 resp = &reply->msg->r.BindResponse;
135 * TODO: a SASL bind with a different mechanism
136 * should cancel an inprogress SASL bind.
141 conn->session_info = NULL;
143 status = gensec_server_start(conn,
144 conn->connection->event.ctx,
145 lp_gensec_settings(conn, conn->lp_ctx),
146 conn->connection->msg_ctx,
148 if (!NT_STATUS_IS_OK(status)) {
149 DEBUG(1, ("Failed to start GENSEC server code: %s\n", nt_errstr(status)));
150 result = LDAP_OPERATIONS_ERROR;
151 errstr = talloc_asprintf(reply, "SASL: Failed to start authentication system: %s",
155 gensec_set_target_service(conn->gensec, "ldap");
157 gensec_set_credentials(conn->gensec, conn->server_credentials);
159 gensec_want_feature(conn->gensec, GENSEC_FEATURE_SIGN);
160 gensec_want_feature(conn->gensec, GENSEC_FEATURE_SEAL);
161 gensec_want_feature(conn->gensec, GENSEC_FEATURE_ASYNC_REPLIES);
163 status = gensec_start_mech_by_sasl_name(conn->gensec, req->creds.SASL.mechanism);
165 if (!NT_STATUS_IS_OK(status)) {
166 DEBUG(1, ("Failed to start GENSEC SASL[%s] server code: %s\n",
167 req->creds.SASL.mechanism, nt_errstr(status)));
168 result = LDAP_OPERATIONS_ERROR;
169 errstr = talloc_asprintf(reply, "SASL:[%s]: Failed to start authentication backend: %s",
170 req->creds.SASL.mechanism, nt_errstr(status));
175 if (NT_STATUS_IS_OK(status)) {
176 DATA_BLOB input = data_blob(NULL, 0);
177 DATA_BLOB output = data_blob(NULL, 0);
179 if (req->creds.SASL.secblob) {
180 input = *req->creds.SASL.secblob;
183 status = gensec_update(conn->gensec, reply,
186 /* Windows 2000 mmc doesn't like secblob == NULL and reports a decoding error */
187 resp->SASL.secblob = talloc(reply, DATA_BLOB);
188 NT_STATUS_HAVE_NO_MEMORY(resp->SASL.secblob);
189 *resp->SASL.secblob = output;
191 resp->SASL.secblob = NULL;
194 if (NT_STATUS_EQUAL(NT_STATUS_MORE_PROCESSING_REQUIRED, status)) {
195 result = LDAP_SASL_BIND_IN_PROGRESS;
197 } else if (NT_STATUS_IS_OK(status)) {
198 struct auth_session_info *old_session_info=NULL;
199 struct ldapsrv_sasl_context *ctx;
201 result = LDAP_SUCCESS;
204 ctx = talloc(call, struct ldapsrv_sasl_context);
207 status = NT_STATUS_NO_MEMORY;
210 status = gensec_socket_init(conn->gensec,
212 conn->connection->socket,
213 conn->connection->event.ctx,
214 stream_io_handler_callback,
219 if (!ctx || !NT_STATUS_IS_OK(status)) {
220 conn->session_info = old_session_info;
221 result = LDAP_OPERATIONS_ERROR;
222 errstr = talloc_asprintf(reply,
223 "SASL:[%s]: Failed to setup SASL socket: %s",
224 req->creds.SASL.mechanism, nt_errstr(status));
227 call->send_callback = ldapsrv_set_sasl;
228 call->send_private = ctx;
230 old_session_info = conn->session_info;
231 conn->session_info = NULL;
232 status = gensec_session_info(conn->gensec, &conn->session_info);
233 if (!NT_STATUS_IS_OK(status)) {
234 conn->session_info = old_session_info;
235 result = LDAP_OPERATIONS_ERROR;
236 errstr = talloc_asprintf(reply,
237 "SASL:[%s]: Failed to get session info: %s",
238 req->creds.SASL.mechanism, nt_errstr(status));
240 talloc_free(old_session_info);
241 talloc_steal(conn, conn->session_info);
243 /* don't leak the old LDB */
244 talloc_free(conn->ldb);
246 status = ldapsrv_backend_Init(conn);
248 if (!NT_STATUS_IS_OK(status)) {
249 result = LDAP_OPERATIONS_ERROR;
250 errstr = talloc_asprintf(reply,
251 "SASL:[%s]: Failed to advise samdb of new credentials: %s",
252 req->creds.SASL.mechanism,
258 status = auth_nt_status_squash(status);
260 result = LDAP_INVALID_CREDENTIALS;
261 errstr = talloc_asprintf(reply, "SASL:[%s]: %s", req->creds.SASL.mechanism, nt_errstr(status));
265 resp->response.resultcode = result;
266 resp->response.dn = NULL;
267 resp->response.errormessage = errstr;
268 resp->response.referral = NULL;
270 ldapsrv_queue_reply(call, reply);
274 NTSTATUS ldapsrv_BindRequest(struct ldapsrv_call *call)
276 struct ldap_BindRequest *req = &call->request->r.BindRequest;
277 struct ldapsrv_reply *reply;
278 struct ldap_BindResponse *resp;
281 * TODO: we should fail the bind request
282 * if there're any pending requests.
284 * also a simple bind should cancel an
285 * inprogress SASL bind.
288 switch (req->mechanism) {
289 case LDAP_AUTH_MECH_SIMPLE:
290 return ldapsrv_BindSimple(call);
291 case LDAP_AUTH_MECH_SASL:
292 return ldapsrv_BindSASL(call);
295 reply = ldapsrv_init_reply(call, LDAP_TAG_BindResponse);
297 return NT_STATUS_NO_MEMORY;
300 resp = &reply->msg->r.BindResponse;
301 resp->response.resultcode = 7;
302 resp->response.dn = NULL;
303 resp->response.errormessage = talloc_asprintf(reply, "Bad AuthenticationChoice [%d]", req->mechanism);
304 resp->response.referral = NULL;
305 resp->SASL.secblob = NULL;
307 ldapsrv_queue_reply(call, reply);
311 NTSTATUS ldapsrv_UnbindRequest(struct ldapsrv_call *call)
313 DEBUG(10, ("UnbindRequest\n"));