r14470: Remove some unnecessary headers.
[Samba.git] / source / winbind / wb_connect_lsa.c
blob815e131962130d8610161ab534d2534c65f826ec
1 /*
2 Unix SMB/CIFS implementation.
4 Connect to the LSA pipe, given an smbcli_tree and possibly some
5 credentials. Try ntlmssp, schannel and anon in that order.
7 Copyright (C) Volker Lendecke 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 2 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, write to the Free Software
21 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
24 #include "includes.h"
25 #include "libcli/composite/composite.h"
27 #include "libcli/raw/libcliraw.h"
28 #include "librpc/gen_ndr/ndr_lsa_c.h"
30 /* Helper to initialize LSA with a specific auth methods. Verify by opening
31 * the LSA policy. */
33 struct init_lsa_state {
34 struct composite_context *ctx;
35 struct dcerpc_pipe *lsa_pipe;
37 uint8_t auth_type;
38 struct cli_credentials *creds;
40 struct lsa_ObjectAttribute objectattr;
41 struct lsa_OpenPolicy2 openpolicy;
42 struct policy_handle *handle;
45 static void init_lsa_recv_pipe(struct composite_context *ctx);
46 static void init_lsa_recv_anon_bind(struct composite_context *ctx);
47 static void init_lsa_recv_auth_bind(struct composite_context *ctx);
48 static void init_lsa_recv_openpol(struct rpc_request *req);
50 struct composite_context *wb_init_lsa_send(TALLOC_CTX *mem_ctx,
51 struct smbcli_tree *tree,
52 uint8_t auth_type,
53 struct cli_credentials *creds)
55 struct composite_context *result, *ctx;
56 struct init_lsa_state *state;
58 result = talloc(mem_ctx, struct composite_context);
59 if (result == NULL) goto failed;
60 result->state = COMPOSITE_STATE_IN_PROGRESS;
61 result->async.fn = NULL;
62 result->event_ctx = tree->session->transport->socket->event.ctx;
64 state = talloc(result, struct init_lsa_state);
65 if (state == NULL) goto failed;
66 state->ctx = result;
67 result->private_data = state;
69 state->auth_type = auth_type;
70 state->creds = creds;
72 state->lsa_pipe = dcerpc_pipe_init(state, result->event_ctx);
73 if (state->lsa_pipe == NULL) goto failed;
75 ctx = dcerpc_pipe_open_smb_send(state->lsa_pipe->conn, tree,
76 "\\lsarpc");
77 ctx->async.fn = init_lsa_recv_pipe;
78 ctx->async.private_data = state;
79 return result;
81 failed:
82 talloc_free(result);
83 return NULL;
86 static void init_lsa_recv_pipe(struct composite_context *ctx)
88 struct init_lsa_state *state =
89 talloc_get_type(ctx->async.private_data,
90 struct init_lsa_state);
92 state->ctx->status = dcerpc_pipe_open_smb_recv(ctx);
93 if (!composite_is_ok(state->ctx)) return;
95 switch (state->auth_type) {
96 case DCERPC_AUTH_TYPE_NONE:
97 ctx = dcerpc_bind_auth_none_send(state, state->lsa_pipe,
98 &dcerpc_table_lsarpc);
99 composite_continue(state->ctx, ctx, init_lsa_recv_anon_bind,
100 state);
101 break;
102 case DCERPC_AUTH_TYPE_NTLMSSP:
103 case DCERPC_AUTH_TYPE_SCHANNEL:
105 uint8_t auth_type;
106 if (lp_winbind_sealed_pipes()) {
107 auth_type = DCERPC_AUTH_LEVEL_PRIVACY;
108 } else {
109 auth_type = DCERPC_AUTH_LEVEL_INTEGRITY;
111 if (state->creds == NULL) {
112 composite_error(state->ctx, NT_STATUS_INTERNAL_ERROR);
113 return;
115 ctx = dcerpc_bind_auth_send(state, state->lsa_pipe,
116 &dcerpc_table_lsarpc,
117 state->creds, state->auth_type,
118 auth_type,
119 NULL);
120 composite_continue(state->ctx, ctx, init_lsa_recv_auth_bind,
121 state);
122 break;
124 default:
125 composite_error(state->ctx, NT_STATUS_INTERNAL_ERROR);
129 static void init_lsa_recv_anon_bind(struct composite_context *ctx)
131 struct init_lsa_state *state =
132 talloc_get_type(ctx->async.private_data,
133 struct init_lsa_state);
134 struct rpc_request *req;
136 state->ctx->status = dcerpc_bind_auth_none_recv(ctx);
137 if (!composite_is_ok(state->ctx)) return;
139 state->handle = talloc(state, struct policy_handle);
140 if (composite_nomem(state->handle, state->ctx)) return;
142 state->openpolicy.in.system_name =
143 talloc_asprintf(state, "\\\\%s",
144 dcerpc_server_name(state->lsa_pipe));
145 ZERO_STRUCT(state->objectattr);
146 state->openpolicy.in.attr = &state->objectattr;
147 state->openpolicy.in.access_mask = SEC_FLAG_MAXIMUM_ALLOWED;
148 state->openpolicy.out.handle = state->handle;
150 req = dcerpc_lsa_OpenPolicy2_send(state->lsa_pipe, state,
151 &state->openpolicy);
152 composite_continue_rpc(state->ctx, req, init_lsa_recv_openpol, state);
155 static void init_lsa_recv_auth_bind(struct composite_context *ctx)
157 struct init_lsa_state *state =
158 talloc_get_type(ctx->async.private_data,
159 struct init_lsa_state);
160 struct rpc_request *req;
162 state->ctx->status = dcerpc_bind_auth_recv(ctx);
163 if (!composite_is_ok(state->ctx)) return;
165 state->handle = talloc(state, struct policy_handle);
166 if (composite_nomem(state->handle, state->ctx)) return;
168 state->openpolicy.in.system_name =
169 talloc_asprintf(state, "\\\\%s",
170 dcerpc_server_name(state->lsa_pipe));
171 ZERO_STRUCT(state->objectattr);
172 state->openpolicy.in.attr = &state->objectattr;
173 state->openpolicy.in.access_mask = SEC_FLAG_MAXIMUM_ALLOWED;
174 state->openpolicy.out.handle = state->handle;
176 req = dcerpc_lsa_OpenPolicy2_send(state->lsa_pipe, state,
177 &state->openpolicy);
178 composite_continue_rpc(state->ctx, req, init_lsa_recv_openpol, state);
181 static void init_lsa_recv_openpol(struct rpc_request *req)
183 struct init_lsa_state *state =
184 talloc_get_type(req->async.private,
185 struct init_lsa_state);
187 state->ctx->status = dcerpc_ndr_request_recv(req);
188 if (!composite_is_ok(state->ctx)) return;
189 state->ctx->status = state->openpolicy.out.result;
190 if (!composite_is_ok(state->ctx)) return;
192 composite_done(state->ctx);
195 NTSTATUS wb_init_lsa_recv(struct composite_context *c,
196 TALLOC_CTX *mem_ctx,
197 struct dcerpc_pipe **lsa_pipe,
198 struct policy_handle **lsa_policy)
200 NTSTATUS status = composite_wait(c);
201 if (NT_STATUS_IS_OK(status)) {
202 struct init_lsa_state *state =
203 talloc_get_type(c->private_data,
204 struct init_lsa_state);
205 *lsa_pipe = talloc_steal(mem_ctx, state->lsa_pipe);
206 *lsa_policy = talloc_steal(mem_ctx, state->handle);
208 talloc_free(c);
209 return status;
214 * Connect to LSA using the credentials, try NTLMSSP and SCHANNEL using the
215 * given credentials. If both fail or no credentials are available, fall back
216 * to an anonymous bind.
219 struct connect_lsa_state {
220 struct composite_context *ctx;
221 struct smbcli_tree *tree;
222 struct cli_credentials *credentials;
224 uint8_t auth_type;
225 struct dcerpc_pipe *lsa_pipe;
226 struct policy_handle *lsa_policy;
229 static void connect_lsa_recv_ntlmssp(struct composite_context *ctx);
230 static void connect_lsa_recv_schannel(struct composite_context *ctx);
231 static void connect_lsa_recv_anon(struct composite_context *ctx);
233 struct composite_context *wb_connect_lsa_send(TALLOC_CTX *mem_ctx,
234 struct smbcli_tree *tree,
235 struct cli_credentials *credentials)
237 struct composite_context *result, *ctx;
238 struct connect_lsa_state *state;
240 result = talloc(mem_ctx, struct composite_context);
241 if (result == NULL) goto failed;
242 result->state = COMPOSITE_STATE_IN_PROGRESS;
243 result->async.fn = NULL;
244 result->event_ctx = tree->session->transport->socket->event.ctx;
246 state = talloc(result, struct connect_lsa_state);
247 if (state == NULL) goto failed;
248 state->ctx = result;
249 result->private_data = state;
251 state->tree = tree;
252 state->credentials = credentials;
254 if (credentials == NULL) {
255 ctx = wb_init_lsa_send(state, tree, DCERPC_AUTH_TYPE_NONE,
256 NULL);
257 if (ctx == NULL) goto failed;
258 ctx->async.fn = connect_lsa_recv_anon;
259 ctx->async.private_data = state;
260 return result;
263 ctx = wb_init_lsa_send(state, tree, DCERPC_AUTH_TYPE_NTLMSSP,
264 credentials);
265 if (ctx == NULL) goto failed;
266 ctx->async.fn = connect_lsa_recv_ntlmssp;
267 ctx->async.private_data = state;
268 return result;
270 failed:
271 talloc_free(result);
272 return NULL;
275 static void connect_lsa_recv_ntlmssp(struct composite_context *ctx)
277 struct connect_lsa_state *state =
278 talloc_get_type(ctx->async.private_data,
279 struct connect_lsa_state);
281 state->ctx->status = wb_init_lsa_recv(ctx, state, &state->lsa_pipe,
282 &state->lsa_policy);
284 if (NT_STATUS_IS_OK(state->ctx->status)) {
285 state->auth_type = DCERPC_AUTH_TYPE_NTLMSSP;
286 composite_done(state->ctx);
287 return;
290 ctx = wb_init_lsa_send(state, state->tree, DCERPC_AUTH_TYPE_SCHANNEL,
291 state->credentials);
292 composite_continue(state->ctx, ctx,
293 connect_lsa_recv_schannel, state);
296 static void connect_lsa_recv_schannel(struct composite_context *ctx)
298 struct connect_lsa_state *state =
299 talloc_get_type(ctx->async.private_data,
300 struct connect_lsa_state);
302 state->ctx->status = wb_init_lsa_recv(ctx, state, &state->lsa_pipe,
303 &state->lsa_policy);
305 if (NT_STATUS_IS_OK(state->ctx->status)) {
306 state->auth_type = DCERPC_AUTH_TYPE_SCHANNEL;
307 composite_done(state->ctx);
308 return;
311 ctx = wb_init_lsa_send(state, state->tree, DCERPC_AUTH_TYPE_NONE,
312 state->credentials);
313 composite_continue(state->ctx, ctx,
314 connect_lsa_recv_anon, state);
317 static void connect_lsa_recv_anon(struct composite_context *ctx)
319 struct connect_lsa_state *state =
320 talloc_get_type(ctx->async.private_data,
321 struct connect_lsa_state);
323 state->ctx->status = wb_init_lsa_recv(ctx, state, &state->lsa_pipe,
324 &state->lsa_policy);
325 if (!composite_is_ok(state->ctx)) return;
327 state->auth_type = DCERPC_AUTH_TYPE_NONE;
328 composite_done(state->ctx);
331 NTSTATUS wb_connect_lsa_recv(struct composite_context *c,
332 TALLOC_CTX *mem_ctx,
333 uint8_t *auth_type,
334 struct dcerpc_pipe **lsa_pipe,
335 struct policy_handle **lsa_policy)
337 NTSTATUS status = composite_wait(c);
338 if (NT_STATUS_IS_OK(status)) {
339 struct connect_lsa_state *state =
340 talloc_get_type(c->private_data,
341 struct connect_lsa_state);
342 *auth_type = state->auth_type;
343 *lsa_pipe = talloc_steal(mem_ctx, state->lsa_pipe);
344 *lsa_policy = talloc_steal(mem_ctx, state->lsa_policy);
346 talloc_free(c);
347 return status;
350 NTSTATUS wb_connect_lsa(TALLOC_CTX *mem_ctx,
351 struct smbcli_tree *tree,
352 struct cli_credentials *credentials,
353 uint8_t *auth_type,
354 struct dcerpc_pipe **lsa_pipe,
355 struct policy_handle **lsa_policy)
357 struct composite_context *c;
358 c = wb_connect_lsa_send(mem_ctx, tree, credentials);
359 return wb_connect_lsa_recv(c, mem_ctx, auth_type, lsa_pipe,
360 lsa_policy);