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
|
/*
Unix SMB/CIFS implementation.
SMB client negotiate context management functions
Copyright (C) Andrew Tridgell 1994-1998
Copyright (C) James Myers 2003 <myersjj@samba.org>
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"
static const struct {
enum protocol_types prot;
const char *name;
} prots[] = {
{PROTOCOL_CORE,"PC NETWORK PROGRAM 1.0"},
{PROTOCOL_COREPLUS,"MICROSOFT NETWORKS 1.03"},
{PROTOCOL_LANMAN1,"MICROSOFT NETWORKS 3.0"},
{PROTOCOL_LANMAN1,"LANMAN1.0"},
{PROTOCOL_LANMAN1,"Windows for Workgroups 3.1a"},
{PROTOCOL_LANMAN2,"LM1.2X002"},
{PROTOCOL_LANMAN2,"DOS LANMAN2.1"},
{PROTOCOL_LANMAN2,"Samba"},
{PROTOCOL_NT1,"NT LANMAN 1.0"},
{PROTOCOL_NT1,"NT LM 0.12"},
};
/****************************************************************************
Send a negprot command.
****************************************************************************/
struct cli_request *smb_negprot_send(struct cli_transport *transport, int maxprotocol)
{
struct cli_request *req;
int i;
req = cli_request_setup_transport(transport, SMBnegprot, 0, 0);
if (!req) {
return NULL;
}
/* setup the protocol strings */
for (i=0; i < ARRAY_SIZE(prots) && prots[i].prot <= maxprotocol; i++) {
cli_req_append_bytes(req, "\2", 1);
cli_req_append_string(req, prots[i].name, STR_TERMINATE | STR_ASCII);
}
if (!cli_request_send(req)) {
cli_request_destroy(req);
return NULL;
}
return req;
}
/****************************************************************************
Send a negprot command.
****************************************************************************/
NTSTATUS smb_raw_negotiate(struct cli_transport *transport)
{
struct cli_request *req;
int protocol;
req = smb_negprot_send(transport, PROTOCOL_NT1);
if (!req) {
return NT_STATUS_UNSUCCESSFUL;
}
if (!cli_request_receive(req) ||
cli_request_is_error(req)) {
return cli_request_destroy(req);
}
CLI_CHECK_MIN_WCT(req, 1);
protocol = SVALS(req->in.vwv, VWV(0));
if (protocol >= ARRAY_SIZE(prots) || protocol < 0) {
req->status = NT_STATUS_UNSUCCESSFUL;
return cli_request_destroy(req);
}
transport->negotiate.protocol = prots[protocol].prot;
if (transport->negotiate.protocol >= PROTOCOL_NT1) {
NTTIME ntt;
/* NT protocol */
CLI_CHECK_WCT(req, 17);
transport->negotiate.sec_mode = CVAL(req->in.vwv,VWV(1));
transport->negotiate.max_mux = SVAL(req->in.vwv,VWV(1)+1);
transport->negotiate.max_xmit = IVAL(req->in.vwv,VWV(3)+1);
transport->negotiate.sesskey = IVAL(req->in.vwv,VWV(7)+1);
transport->negotiate.server_zone = SVALS(req->in.vwv,VWV(15)+1) * 60;
/* this time arrives in real GMT */
ntt = cli_pull_nttime(req->in.vwv, VWV(11)+1);
transport->negotiate.server_time = nt_time_to_unix(ntt);
transport->negotiate.capabilities = IVAL(req->in.vwv,VWV(9)+1);
transport->negotiate.secblob = cli_req_pull_blob(req, transport->mem_ctx, req->in.data, req->in.data_size);
if (transport->negotiate.capabilities & CAP_RAW_MODE) {
transport->negotiate.readbraw_supported = True;
transport->negotiate.writebraw_supported = True;
}
/* work out if they sent us a workgroup */
if ((transport->negotiate.capabilities & CAP_EXTENDED_SECURITY) &&
req->in.data_size > 16) {
cli_req_pull_string(req, transport->mem_ctx, &transport->negotiate.server_domain,
req->in.data+16,
req->in.data_size-16, STR_UNICODE|STR_NOALIGN);
}
} else if (transport->negotiate.protocol >= PROTOCOL_LANMAN1) {
CLI_CHECK_WCT(req, 13);
transport->negotiate.sec_mode = SVAL(req->in.vwv,VWV(1));
transport->negotiate.max_xmit = SVAL(req->in.vwv,VWV(2));
transport->negotiate.sesskey = IVAL(req->in.vwv,VWV(6));
transport->negotiate.server_zone = SVALS(req->in.vwv,VWV(10)) * 60;
/* this time is converted to GMT by raw_pull_dos_date */
transport->negotiate.server_time = raw_pull_dos_date(transport,
req->in.vwv+VWV(8));
if ((SVAL(req->in.vwv,VWV(5)) & 0x1)) {
transport->negotiate.readbraw_supported = 1;
}
if ((SVAL(req->in.vwv,VWV(5)) & 0x2)) {
transport->negotiate.writebraw_supported = 1;
}
transport->negotiate.secblob = cli_req_pull_blob(req, transport->mem_ctx,
req->in.data, req->in.data_size);
} else {
/* the old core protocol */
transport->negotiate.sec_mode = 0;
transport->negotiate.server_time = time(NULL);
transport->negotiate.max_xmit = ~0;
transport->negotiate.server_zone = get_time_zone(transport->negotiate.server_time);
}
/* a way to force ascii SMB */
if (getenv("CLI_FORCE_ASCII")) {
transport->negotiate.capabilities &= ~CAP_UNICODE;
}
failed:
return cli_request_destroy(req);
}
|
