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
|
/*
Unix SMB/CIFS implementation.
dcerpc connect functions
Copyright (C) Andrew Tridgell 2003
Copyright (C) Jelmer Vernooij 2004
Copyright (C) Andrew Bartlett <abartlet@samba.org> 2005
Copyright (C) Rafal Szczesniak 2005
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 "system/network.h"
#include "librpc/gen_ndr/ndr_epmapper.h"
#include "librpc/gen_ndr/ndr_dcerpc.h"
#include "librpc/gen_ndr/ndr_misc.h"
#include "libcli/raw/libcliraw.h"
#include "libcli/composite/composite.h"
#include "libcli/smb_composite/smb_composite.h"
struct dcerpc_pipe_connect;
struct pipe_np_smb_state {
struct smb_composite_connect conn;
struct smbcli_tree *tree;
struct dcerpc_pipe_connect io;
};
/*
Stage 3 of ncacn_np_smb: Named pipe opened (?)
*/
void continue_pipe_open_smb(struct composite_context *ctx)
{
struct composite_context *c = talloc_get_type(ctx->async.private_data,
struct composite_context);
struct pipe_np_smb_state *s = talloc_get_type(c->private_data,
struct pipe_np_smb_state);
/* receive result of named pipe open request */
c->status = dcerpc_pipe_open_smb_recv(ctx);
if (!NT_STATUS_IS_OK(c->status)) {
DEBUG(0,("Failed to open pipe %s - %s\n", s->io.pipe_name, nt_errstr(c->status)));
composite_error(c, c->status);
return;
}
composite_done(c);
}
/*
Stage 2 of ncacn_np_smb: Open a named pipe after successful smb connection
*/
void continue_smb_connect(struct composite_context *ctx)
{
struct composite_context *open_ctx;
struct composite_context *c = talloc_get_type(ctx->async.private_data,
struct composite_context);
struct pipe_np_smb_state *s = talloc_get_type(c->private_data,
struct pipe_np_smb_state);
/* receive result of smb connect request */
c->status = smb_composite_connect_recv(ctx, c);
if (!NT_STATUS_IS_OK(c->status)) {
DEBUG(0,("Failed to connect to %s - %s\n", s->io.binding->host, nt_errstr(c->status)));
composite_error(c, c->status);
return;
}
/* prepare named pipe open parameters */
s->tree = s->conn.out.tree;
s->io.pipe_name = s->io.binding->endpoint;
/* send named pipe open request */
open_ctx = dcerpc_pipe_open_smb_send(s->io.pipe->conn, s->tree, s->io.pipe_name);
if (open_ctx == NULL) {
composite_error(c, NT_STATUS_NO_MEMORY);
return;
}
composite_continue(c, open_ctx, continue_pipe_open_smb, c);
}
/*
Initiate async open of a rpc connection to a rpc pipe on SMB using
the binding structure to determine the endpoint and options
*/
struct composite_context *dcerpc_pipe_connect_ncacn_np_smb_send(TALLOC_CTX *tmp_ctx,
struct dcerpc_pipe_connect *io)
{
struct composite_context *c;
struct pipe_np_smb_state *s;
struct composite_context *conn_req;
struct smb_composite_connect *conn;
/* composite context allocation and setup */
c = talloc_zero(tmp_ctx, struct composite_context);
if (c == NULL) return NULL;
s = talloc_zero(c, struct pipe_np_smb_state);
if (s == NULL) {
composite_error(c, NT_STATUS_NO_MEMORY);
goto done;
}
c->state = COMPOSITE_STATE_IN_PROGRESS;
c->private_data = s;
c->event_ctx = io->pipe->conn->event_ctx;
s->io = *io;
conn = &s->conn;
/* prepare smb connection parameters: we're connecting to IPC$ share on
remote rpc server */
conn->in.dest_host = s->io.binding->host;
conn->in.port = 0;
conn->in.called_name = strupper_talloc(tmp_ctx, s->io.binding->host);
conn->in.service = "IPC$";
conn->in.service_type = NULL;
conn->in.fallback_to_anonymous = False;
conn->in.workgroup = lp_workgroup();
/*
* provide proper credentials - user supplied or anonymous in case this is
* schannel connection
*/
if (s->io.binding->flags & DCERPC_SCHANNEL) {
struct cli_credentials *anon_creds;
anon_creds = cli_credentials_init(tmp_ctx);
if (!anon_creds) {
composite_error(c, NT_STATUS_NO_MEMORY);
goto done;
}
cli_credentials_set_anonymous(anon_creds);
cli_credentials_guess(anon_creds);
s->conn.in.credentials = anon_creds;
} else {
s->conn.in.credentials = s->io.creds;
}
/* send smb connect request */
conn_req = smb_composite_connect_send(conn, s->io.pipe->conn, s->io.pipe->conn->event_ctx);
if (!conn_req) {
composite_error(c, NT_STATUS_NO_MEMORY);
goto done;
}
composite_continue(c, conn_req, continue_smb_connect, c);
done:
return c;
}
/*
Receive result of a rpc connection to a rpc pipe on SMB
*/
NTSTATUS dcerpc_pipe_connect_ncacn_np_smb_recv(struct composite_context *c)
{
NTSTATUS status = composite_wait(c);
talloc_free(c);
return status;
}
/*
Sync version of a rpc connection to a rpc pipe on SMB
*/
NTSTATUS dcerpc_pipe_connect_ncacn_np_smb(TALLOC_CTX *tmp_ctx,
struct dcerpc_pipe_connect *io)
{
struct composite_context *c;
c = dcerpc_pipe_connect_ncacn_np_smb_send(tmp_ctx, io);
return dcerpc_pipe_connect_ncacn_np_smb_recv(c);
}
|
