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
|
/*
* Unix SMB/CIFS implementation.
* RPC Pipe client / server routines
* Largely rewritten by Jeremy Allison 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 3 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, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
#include "../librpc/gen_ndr/ndr_schannel.h"
#include "../librpc/gen_ndr/ndr_netlogon.h"
#include "../libcli/auth/schannel.h"
#include "rpc_client/cli_netlogon.h"
#include "rpc_client/cli_pipe.h"
#include "librpc/rpc/dcerpc.h"
#include "passdb.h"
#include "libsmb/libsmb.h"
#include "../libcli/smb/smbXcli_base.h"
#include "libcli/auth/netlogon_creds_cli.h"
#undef DBGC_CLASS
#define DBGC_CLASS DBGC_RPC_CLI
/****************************************************************************
Open a named pipe to an SMB server and bind using schannel (bind type 68).
Fetch the session key ourselves using a temporary netlogon pipe.
****************************************************************************/
NTSTATUS cli_rpc_pipe_open_schannel(struct cli_state *cli,
struct messaging_context *msg_ctx,
const struct ndr_interface_table *table,
enum dcerpc_transport_t transport,
enum dcerpc_AuthLevel auth_level,
const char *domain,
struct rpc_pipe_client **presult,
TALLOC_CTX *mem_ctx,
struct netlogon_creds_cli_context **pcreds)
{
TALLOC_CTX *frame = talloc_stackframe();
const char *dc_name = smbXcli_conn_remote_name(cli->conn);
struct rpc_pipe_client *result = NULL;
NTSTATUS status;
struct netlogon_creds_cli_context *netlogon_creds = NULL;
struct netlogon_creds_CredentialState *creds = NULL;
uint32_t netlogon_flags = 0;
enum netr_SchannelType sec_chan_type = 0;
const char *_account_name = NULL;
const char *account_name = NULL;
struct samr_Password current_nt_hash;
struct samr_Password *previous_nt_hash = NULL;
bool ok;
ok = get_trust_pw_hash(domain,
current_nt_hash.hash,
&_account_name,
&sec_chan_type);
if (!ok) {
TALLOC_FREE(frame);
return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
}
account_name = talloc_asprintf(frame, "%s$", _account_name);
if (account_name == NULL) {
SAFE_FREE(previous_nt_hash);
TALLOC_FREE(frame);
return NT_STATUS_NO_MEMORY;
}
status = rpccli_create_netlogon_creds(dc_name,
domain,
account_name,
sec_chan_type,
msg_ctx,
frame,
&netlogon_creds);
if (!NT_STATUS_IS_OK(status)) {
SAFE_FREE(previous_nt_hash);
TALLOC_FREE(frame);
return status;
}
status = rpccli_setup_netlogon_creds(cli,
netlogon_creds,
false, /* force_reauth */
current_nt_hash,
previous_nt_hash);
SAFE_FREE(previous_nt_hash);
if (!NT_STATUS_IS_OK(status)) {
TALLOC_FREE(frame);
return status;
}
status = netlogon_creds_cli_get(netlogon_creds,
frame,
&creds);
if (!NT_STATUS_IS_OK(status)) {
TALLOC_FREE(frame);
return status;
}
netlogon_flags = creds->negotiate_flags;
TALLOC_FREE(creds);
if (!(netlogon_flags & NETLOGON_NEG_AUTHENTICATED_RPC)) {
TALLOC_FREE(frame);
return NT_STATUS_DOWNGRADE_DETECTED;
}
status = cli_rpc_pipe_open_schannel_with_key(
cli, table, transport, domain,
netlogon_creds,
&result);
if (NT_STATUS_IS_OK(status)) {
*presult = result;
if (pcreds != NULL) {
*pcreds = talloc_move(mem_ctx, &netlogon_creds);
}
}
TALLOC_FREE(frame);
return status;
}
|
