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"
34 #include "lib/socket/socket.h"
36 struct sec_conn_state {
37 struct dcerpc_pipe *pipe;
38 struct dcerpc_pipe *pipe2;
39 struct dcerpc_binding *binding;
40 struct socket_address *peer_addr;
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);
76 if (composite_nomem(s->pipe2, c)) return c;
79 s->pipe2->conn->packet_log_dir = s->pipe->conn->packet_log_dir;
81 /* open second dcerpc pipe using the same transport as for primary pipe */
82 switch (s->pipe->conn->transport.transport) {
84 pipe_smb_req = dcerpc_secondary_smb_send(s->pipe->conn, s->pipe2,
85 s->binding->endpoint);
86 composite_continue(c, pipe_smb_req, continue_open_smb, c);
90 s->peer_addr = dcerpc_socket_peer_addr(s->pipe->conn, s);
92 composite_error(c, NT_STATUS_INVALID_PARAMETER);
96 pipe_tcp_req = dcerpc_pipe_open_tcp_send(s->pipe2->conn,
97 s->binding->localaddress,
99 s->binding->target_hostname,
100 atoi(s->binding->endpoint),
101 resolve_context_init(s));
102 composite_continue(c, pipe_tcp_req, continue_open_tcp, c);
106 case NCACN_UNIX_STREAM:
107 pipe_ncalrpc_req = dcerpc_pipe_open_unix_stream_send(s->pipe2->conn,
108 dcerpc_unix_socket_path(s->pipe->conn));
109 composite_continue(c, pipe_ncalrpc_req, continue_open_pipe, c);
113 /* looks like a transport we don't support */
114 composite_error(c, NT_STATUS_NOT_SUPPORTED);
122 Stage 2 of secondary_connection: Receive result of pipe open request on smb
124 static void continue_open_smb(struct composite_context *ctx)
126 struct composite_context *c = talloc_get_type(ctx->async.private_data,
127 struct composite_context);
129 c->status = dcerpc_secondary_smb_recv(ctx);
130 if (!composite_is_ok(c)) return;
132 continue_pipe_open(c);
137 Stage 2 of secondary_connection: Receive result of pipe open request on tcp/ip
139 static void continue_open_tcp(struct composite_context *ctx)
141 struct composite_context *c = talloc_get_type(ctx->async.private_data,
142 struct composite_context);
144 c->status = dcerpc_pipe_open_tcp_recv(ctx);
145 if (!composite_is_ok(c)) return;
147 continue_pipe_open(c);
152 Stage 2 of secondary_connection: Receive result of pipe open request on ncalrpc
154 static void continue_open_pipe(struct composite_context *ctx)
156 struct composite_context *c = talloc_get_type(ctx->async.private_data,
157 struct composite_context);
159 c->status = dcerpc_pipe_open_pipe_recv(ctx);
160 if (!composite_is_ok(c)) return;
162 continue_pipe_open(c);
167 Stage 3 of secondary_connection: Get binding data and flags from primary pipe
168 and say if we're done ok.
170 static void continue_pipe_open(struct composite_context *c)
172 struct sec_conn_state *s;
174 s = talloc_get_type(c->private_data, struct sec_conn_state);
176 s->pipe2->conn->flags = s->pipe->conn->flags;
177 s->pipe2->binding = s->binding;
178 if (!talloc_reference(s->pipe2, s->binding)) {
179 composite_error(c, NT_STATUS_NO_MEMORY);
188 Receive result of secondary rpc connection request and return
191 _PUBLIC_ NTSTATUS dcerpc_secondary_connection_recv(struct composite_context *c,
192 struct dcerpc_pipe **p2)
194 NTSTATUS status = composite_wait(c);
195 struct sec_conn_state *s;
197 s = talloc_get_type(c->private_data, struct sec_conn_state);
199 if (NT_STATUS_IS_OK(status)) {
200 *p2 = talloc_steal(s->pipe, s->pipe2);
208 Create a secondary dcerpc connection from a primary connection
211 If the primary is a SMB connection then the secondary connection
212 will be on the same SMB connection, but using a new fnum
214 _PUBLIC_ NTSTATUS dcerpc_secondary_connection(struct dcerpc_pipe *p,
215 struct dcerpc_pipe **p2,
216 struct dcerpc_binding *b)
218 struct composite_context *c;
220 c = dcerpc_secondary_connection_send(p, b);
221 return dcerpc_secondary_connection_recv(c, p2);
225 Create a secondary DCERPC connection, then bind (and possibly
226 authenticate) using the supplied credentials.
228 This creates a second connection, to the same host (and on ncacn_np on the same connection) as the first
230 struct sec_auth_conn_state {
231 struct dcerpc_pipe *pipe2;
232 struct dcerpc_binding *binding;
233 const struct ndr_interface_table *table;
234 struct cli_credentials *credentials;
235 struct composite_context *ctx;
236 struct loadparm_context *lp_ctx;
239 static void dcerpc_secondary_auth_connection_bind(struct composite_context *ctx);
240 static void dcerpc_secondary_auth_connection_continue(struct composite_context *ctx);
242 _PUBLIC_ struct composite_context* dcerpc_secondary_auth_connection_send(struct dcerpc_pipe *p,
243 struct dcerpc_binding *binding,
244 const struct ndr_interface_table *table,
245 struct cli_credentials *credentials,
246 struct loadparm_context *lp_ctx)
249 struct composite_context *c, *secondary_conn_ctx;
250 struct sec_auth_conn_state *s;
252 /* composite context allocation and setup */
253 c = composite_create(p, p->conn->event_ctx);
254 if (c == NULL) return NULL;
256 s = talloc_zero(c, struct sec_auth_conn_state);
257 if (composite_nomem(s, c)) return c;
261 s->binding = binding;
263 s->credentials = credentials;
266 secondary_conn_ctx = dcerpc_secondary_connection_send(p, binding);
268 if (composite_nomem(secondary_conn_ctx, s->ctx)) {
273 composite_continue(s->ctx, secondary_conn_ctx, dcerpc_secondary_auth_connection_bind,
279 Stage 2 of secondary_auth_connection:
280 Having made the secondary connection, we will need to do an (authenticated) bind
282 static void dcerpc_secondary_auth_connection_bind(struct composite_context *ctx)
284 struct composite_context *secondary_auth_ctx;
285 struct sec_auth_conn_state *s = talloc_get_type(ctx->async.private_data,
286 struct sec_auth_conn_state);
288 s->ctx->status = dcerpc_secondary_connection_recv(ctx, &s->pipe2);
289 if (!composite_is_ok(s->ctx)) return;
291 secondary_auth_ctx = dcerpc_pipe_auth_send(s->pipe2, s->binding, s->table, s->credentials,
293 composite_continue(s->ctx, secondary_auth_ctx, dcerpc_secondary_auth_connection_continue, s);
298 Stage 3 of secondary_auth_connection: Receive result of authenticated bind request
300 static void dcerpc_secondary_auth_connection_continue(struct composite_context *ctx)
302 struct sec_auth_conn_state *s = talloc_get_type(ctx->async.private_data,
303 struct sec_auth_conn_state);
305 s->ctx->status = dcerpc_pipe_auth_recv(ctx, s, &s->pipe2);
306 if (!composite_is_ok(s->ctx)) return;
308 composite_done(s->ctx);
312 Receive an authenticated pipe, created as a secondary connection
314 _PUBLIC_ NTSTATUS dcerpc_secondary_auth_connection_recv(struct composite_context *c,
316 struct dcerpc_pipe **p)
318 NTSTATUS status = composite_wait(c);
319 struct sec_auth_conn_state *s;
321 s = talloc_get_type(c->private_data, struct sec_auth_conn_state);
323 if (NT_STATUS_IS_OK(status)) {
324 *p = talloc_steal(mem_ctx, s->pipe2);