2 Unix SMB/CIFS implementation.
4 dcerpc connect functions
6 Copyright (C) Andrew Tridgell 2003
7 Copyright (C) Jelmer Vernooij 2004
8 Copyright (C) Andrew Bartlett <abartlet@samba.org> 2005-2007
9 Copyright (C) Rafal Szczesniak 2005
11 This program is free software; you can redistribute it and/or modify
12 it under the terms of the GNU General Public License as published by
13 the Free Software Foundation; either version 3 of the License, or
14 (at your option) any later version.
16 This program is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 GNU General Public License for more details.
21 You should have received a copy of the GNU General Public License
22 along with this program. If not, see <http://www.gnu.org/licenses/>.
27 #include "libcli/composite/composite.h"
28 #include "lib/events/events.h"
29 #include "librpc/rpc/dcerpc.h"
30 #include "librpc/rpc/dcerpc_proto.h"
31 #include "auth/credentials/credentials.h"
32 #include "param/param.h"
33 #include "libcli/resolve/resolve.h"
36 struct sec_conn_state {
37 struct dcerpc_pipe *pipe;
38 struct dcerpc_pipe *pipe2;
39 struct dcerpc_binding *binding;
40 struct smbcli_tree *tree;
44 static void continue_open_smb(struct composite_context *ctx);
45 static void continue_open_tcp(struct composite_context *ctx);
46 static void continue_open_pipe(struct composite_context *ctx);
47 static void continue_pipe_open(struct composite_context *c);
51 Send request to create a secondary dcerpc connection from a primary
54 _PUBLIC_ struct composite_context* dcerpc_secondary_connection_send(struct dcerpc_pipe *p,
55 struct dcerpc_binding *b)
57 struct composite_context *c;
58 struct sec_conn_state *s;
59 struct composite_context *pipe_smb_req;
60 struct composite_context *pipe_tcp_req;
61 struct composite_context *pipe_ncalrpc_req;
63 /* composite context allocation and setup */
64 c = composite_create(p, p->conn->event_ctx);
65 if (c == NULL) return NULL;
67 s = talloc_zero(c, struct sec_conn_state);
68 if (composite_nomem(s, c)) return c;
74 /* initialise second dcerpc pipe based on primary pipe's event context */
75 s->pipe2 = dcerpc_pipe_init(c, s->pipe->conn->event_ctx, s->pipe->conn->iconv_convenience);
76 if (composite_nomem(s->pipe2, c)) return c;
78 /* open second dcerpc pipe using the same transport as for primary pipe */
79 switch (s->pipe->conn->transport.transport) {
81 /* get smb tree of primary dcerpc pipe opened on smb */
82 s->tree = dcerpc_smb_tree(s->pipe->conn);
84 composite_error(c, NT_STATUS_INVALID_PARAMETER);
88 pipe_smb_req = dcerpc_pipe_open_smb_send(s->pipe2, s->tree,
89 s->binding->endpoint);
90 composite_continue(c, pipe_smb_req, continue_open_smb, c);
94 pipe_tcp_req = dcerpc_pipe_open_tcp_send(s->pipe2->conn,
96 s->binding->target_hostname,
97 atoi(s->binding->endpoint),
98 lp_resolve_context(global_loadparm));
99 composite_continue(c, pipe_tcp_req, continue_open_tcp, c);
103 pipe_ncalrpc_req = dcerpc_pipe_open_pipe_send(s->pipe2->conn, lp_ncalrpc_dir(global_loadparm),
104 s->binding->endpoint);
105 composite_continue(c, pipe_ncalrpc_req, continue_open_pipe, c);
109 /* looks like a transport we don't support */
110 composite_error(c, NT_STATUS_NOT_SUPPORTED);
118 Stage 2 of secondary_connection: Receive result of pipe open request on smb
120 static void continue_open_smb(struct composite_context *ctx)
122 struct composite_context *c = talloc_get_type(ctx->async.private_data,
123 struct composite_context);
125 c->status = dcerpc_pipe_open_smb_recv(ctx);
126 if (!composite_is_ok(c)) return;
128 continue_pipe_open(c);
133 Stage 2 of secondary_connection: Receive result of pipe open request on tcp/ip
135 static void continue_open_tcp(struct composite_context *ctx)
137 struct composite_context *c = talloc_get_type(ctx->async.private_data,
138 struct composite_context);
140 c->status = dcerpc_pipe_open_tcp_recv(ctx);
141 if (!composite_is_ok(c)) return;
143 continue_pipe_open(c);
148 Stage 2 of secondary_connection: Receive result of pipe open request on ncalrpc
150 static void continue_open_pipe(struct composite_context *ctx)
152 struct composite_context *c = talloc_get_type(ctx->async.private_data,
153 struct composite_context);
155 c->status = dcerpc_pipe_open_pipe_recv(ctx);
156 if (!composite_is_ok(c)) return;
158 continue_pipe_open(c);
163 Stage 3 of secondary_connection: Get binding data and flags from primary pipe
164 and say if we're done ok.
166 static void continue_pipe_open(struct composite_context *c)
168 struct sec_conn_state *s;
170 s = talloc_get_type(c->private_data, struct sec_conn_state);
172 s->pipe2->conn->flags = s->pipe->conn->flags;
173 s->pipe2->binding = s->binding;
174 if (!talloc_reference(s->pipe2, s->binding)) {
175 composite_error(c, NT_STATUS_NO_MEMORY);
184 Receive result of secondary rpc connection request and return
187 _PUBLIC_ NTSTATUS dcerpc_secondary_connection_recv(struct composite_context *c,
188 struct dcerpc_pipe **p2)
190 NTSTATUS status = composite_wait(c);
191 struct sec_conn_state *s;
193 s = talloc_get_type(c->private_data, struct sec_conn_state);
195 if (NT_STATUS_IS_OK(status)) {
196 *p2 = talloc_steal(s->pipe, s->pipe2);
204 Create a secondary dcerpc connection from a primary connection
207 If the primary is a SMB connection then the secondary connection
208 will be on the same SMB connection, but using a new fnum
210 _PUBLIC_ NTSTATUS dcerpc_secondary_connection(struct dcerpc_pipe *p,
211 struct dcerpc_pipe **p2,
212 struct dcerpc_binding *b)
214 struct composite_context *c;
216 c = dcerpc_secondary_connection_send(p, b);
217 return dcerpc_secondary_connection_recv(c, p2);
221 Create a secondary DCERPC connection, then bind (and possibly
222 authenticate) using the supplied credentials.
224 This creates a second connection, to the same host (and on ncacn_np on the same connection) as the first
226 struct sec_auth_conn_state {
227 struct dcerpc_pipe *pipe2;
228 struct dcerpc_binding *binding;
229 const struct ndr_interface_table *table;
230 struct cli_credentials *credentials;
231 struct composite_context *ctx;
232 struct loadparm_context *lp_ctx;
235 static void dcerpc_secondary_auth_connection_bind(struct composite_context *ctx);
236 static void dcerpc_secondary_auth_connection_continue(struct composite_context *ctx);
238 _PUBLIC_ struct composite_context* dcerpc_secondary_auth_connection_send(struct dcerpc_pipe *p,
239 struct dcerpc_binding *binding,
240 const struct ndr_interface_table *table,
241 struct cli_credentials *credentials,
242 struct loadparm_context *lp_ctx)
245 struct composite_context *c, *secondary_conn_ctx;
246 struct sec_auth_conn_state *s;
248 /* composite context allocation and setup */
249 c = composite_create(p, p->conn->event_ctx);
250 if (c == NULL) return NULL;
252 s = talloc_zero(c, struct sec_auth_conn_state);
253 if (composite_nomem(s, c)) return c;
257 s->binding = binding;
259 s->credentials = credentials;
262 secondary_conn_ctx = dcerpc_secondary_connection_send(p, binding);
264 if (composite_nomem(secondary_conn_ctx, s->ctx)) {
269 composite_continue(s->ctx, secondary_conn_ctx, dcerpc_secondary_auth_connection_bind,
275 Stage 2 of secondary_auth_connection:
276 Having made the secondary connection, we will need to do an (authenticated) bind
278 static void dcerpc_secondary_auth_connection_bind(struct composite_context *ctx)
280 struct composite_context *secondary_auth_ctx;
281 struct sec_auth_conn_state *s = talloc_get_type(ctx->async.private_data,
282 struct sec_auth_conn_state);
284 s->ctx->status = dcerpc_secondary_connection_recv(ctx, &s->pipe2);
285 if (!composite_is_ok(s->ctx)) return;
287 secondary_auth_ctx = dcerpc_pipe_auth_send(s->pipe2, s->binding, s->table, s->credentials,
289 composite_continue(s->ctx, secondary_auth_ctx, dcerpc_secondary_auth_connection_continue, s);
294 Stage 3 of secondary_auth_connection: Receive result of authenticated bind request
296 static void dcerpc_secondary_auth_connection_continue(struct composite_context *ctx)
298 struct sec_auth_conn_state *s = talloc_get_type(ctx->async.private_data,
299 struct sec_auth_conn_state);
301 s->ctx->status = dcerpc_pipe_auth_recv(ctx, s, &s->pipe2);
302 if (!composite_is_ok(s->ctx)) return;
304 composite_done(s->ctx);
308 Receive an authenticated pipe, created as a secondary connection
310 _PUBLIC_ NTSTATUS dcerpc_secondary_auth_connection_recv(struct composite_context *c,
312 struct dcerpc_pipe **p)
314 NTSTATUS status = composite_wait(c);
315 struct sec_auth_conn_state *s;
317 s = talloc_get_type(c->private_data, struct sec_auth_conn_state);
319 if (NT_STATUS_IS_OK(status)) {
320 *p = talloc_steal(mem_ctx, s->pipe2);