source: branches/samba-3.5.x/source4/libcli/raw/rawnegotiate.c

Last change on this file was 414, checked in by Herwig Bauernfeind, 15 years ago

Samba 3.5.0: Initial import
File size: 6.4 KB
Line 
1/*
2 Unix SMB/CIFS implementation.
3
4 SMB client negotiate context management functions
5
6 Copyright (C) Andrew Tridgell 1994-2005
7 Copyright (C) James Myers 2003 <myersjj@samba.org>
8
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
13
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
18
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>.
21*/
22
23#include "includes.h"
24#include "libcli/raw/libcliraw.h"
25#include "libcli/raw/raw_proto.h"
26#include "system/time.h"
27
28static const struct {
29 enum protocol_types prot;
30 const char *name;
31} prots[] = {
32 {PROTOCOL_CORE,"PC NETWORK PROGRAM 1.0"},
33 {PROTOCOL_COREPLUS,"MICROSOFT NETWORKS 1.03"},
34 {PROTOCOL_LANMAN1,"MICROSOFT NETWORKS 3.0"},
35 {PROTOCOL_LANMAN1,"LANMAN1.0"},
36 {PROTOCOL_LANMAN1,"Windows for Workgroups 3.1a"},
37 {PROTOCOL_LANMAN2,"LM1.2X002"},
38 {PROTOCOL_LANMAN2,"DOS LANMAN2.1"},
39 {PROTOCOL_LANMAN2,"LANMAN2.1"},
40 {PROTOCOL_LANMAN2,"Samba"},
41 {PROTOCOL_NT1,"NT LANMAN 1.0"},
42 {PROTOCOL_NT1,"NT LM 0.12"},
43#if 0
44 /* we don't yet handle chaining a SMB transport onto SMB2 */
45 {PROTOCOL_SMB2,"SMB 2.002"},
46#endif
47};
48
49/*
50 Send a negprot command.
51*/
52struct smbcli_request *smb_raw_negotiate_send(struct smbcli_transport *transport,
53 bool unicode,
54 int maxprotocol)
55{
56 struct smbcli_request *req;
57 int i;
58 uint16_t flags2 = 0;
59
60 req = smbcli_request_setup_transport(transport, SMBnegprot, 0, 0);
61 if (!req) {
62 return NULL;
63 }
64
65 flags2 |= FLAGS2_32_BIT_ERROR_CODES;
66 if (unicode) {
67 flags2 |= FLAGS2_UNICODE_STRINGS;
68 }
69 flags2 |= FLAGS2_EXTENDED_ATTRIBUTES;
70 flags2 |= FLAGS2_LONG_PATH_COMPONENTS;
71 flags2 |= FLAGS2_IS_LONG_NAME;
72
73 if (transport->options.use_spnego) {
74 flags2 |= FLAGS2_EXTENDED_SECURITY;
75 }
76
77 SSVAL(req->out.hdr,HDR_FLG2, flags2);
78
79 /* setup the protocol strings */
80 for (i=0; i < ARRAY_SIZE(prots) && prots[i].prot <= maxprotocol; i++) {
81 smbcli_req_append_bytes(req, (const uint8_t *)"\2", 1);
82 smbcli_req_append_string(req, prots[i].name, STR_TERMINATE | STR_ASCII);
83 }
84
85 if (!smbcli_request_send(req)) {
86 smbcli_request_destroy(req);
87 return NULL;
88 }
89
90 return req;
91}
92
93/*
94 Send a negprot command.
95*/
96NTSTATUS smb_raw_negotiate_recv(struct smbcli_request *req)
97{
98 struct smbcli_transport *transport = req->transport;
99 int protocol;
100
101 if (!smbcli_request_receive(req) ||
102 smbcli_request_is_error(req)) {
103 return smbcli_request_destroy(req);
104 }
105
106 SMBCLI_CHECK_MIN_WCT(req, 1);
107
108 protocol = SVALS(req->in.vwv, VWV(0));
109
110 if (protocol >= ARRAY_SIZE(prots) || protocol < 0) {
111 req->status = NT_STATUS_UNSUCCESSFUL;
112 return smbcli_request_destroy(req);
113 }
114
115 transport->negotiate.protocol = prots[protocol].prot;
116
117 if (transport->negotiate.protocol >= PROTOCOL_NT1) {
118 NTTIME ntt;
119
120 /* NT protocol */
121 SMBCLI_CHECK_WCT(req, 17);
122 transport->negotiate.sec_mode = CVAL(req->in.vwv,VWV(1));
123 transport->negotiate.max_mux = SVAL(req->in.vwv,VWV(1)+1);
124 transport->negotiate.max_xmit = IVAL(req->in.vwv,VWV(3)+1);
125 transport->negotiate.sesskey = IVAL(req->in.vwv,VWV(7)+1);
126 transport->negotiate.capabilities = IVAL(req->in.vwv,VWV(9)+1);
127
128 /* this time arrives in real GMT */
129 ntt = smbcli_pull_nttime(req->in.vwv, VWV(11)+1);
130 transport->negotiate.server_time = nt_time_to_unix(ntt);
131 transport->negotiate.server_zone = SVALS(req->in.vwv,VWV(15)+1) * 60;
132 transport->negotiate.key_len = CVAL(req->in.vwv,VWV(16)+1);
133
134 if (transport->negotiate.capabilities & CAP_EXTENDED_SECURITY) {
135 if (req->in.data_size < 16) {
136 goto failed;
137 }
138 transport->negotiate.server_guid = smbcli_req_pull_blob(&req->in.bufinfo, transport, req->in.data, 16);
139 transport->negotiate.secblob = smbcli_req_pull_blob(&req->in.bufinfo, transport, req->in.data + 16, req->in.data_size - 16);
140 } else {
141 if (req->in.data_size < (transport->negotiate.key_len)) {
142 goto failed;
143 }
144 transport->negotiate.secblob = smbcli_req_pull_blob(&req->in.bufinfo, transport, req->in.data, transport->negotiate.key_len);
145 smbcli_req_pull_string(&req->in.bufinfo, transport, &transport->negotiate.server_domain,
146 req->in.data+transport->negotiate.key_len,
147 req->in.data_size-transport->negotiate.key_len, STR_UNICODE|STR_NOALIGN);
148 /* here comes the server name */
149 }
150
151 if (transport->negotiate.capabilities & CAP_RAW_MODE) {
152 transport->negotiate.readbraw_supported = true;
153 transport->negotiate.writebraw_supported = true;
154 }
155 } else if (transport->negotiate.protocol >= PROTOCOL_LANMAN1) {
156 SMBCLI_CHECK_WCT(req, 13);
157 transport->negotiate.sec_mode = SVAL(req->in.vwv,VWV(1));
158 transport->negotiate.max_xmit = SVAL(req->in.vwv,VWV(2));
159 transport->negotiate.sesskey = IVAL(req->in.vwv,VWV(6));
160 transport->negotiate.server_zone = SVALS(req->in.vwv,VWV(10)) * 60;
161
162 /* this time is converted to GMT by raw_pull_dos_date */
163 transport->negotiate.server_time = raw_pull_dos_date(transport,
164 req->in.vwv+VWV(8));
165 if ((SVAL(req->in.vwv,VWV(5)) & 0x1)) {
166 transport->negotiate.readbraw_supported = 1;
167 }
168 if ((SVAL(req->in.vwv,VWV(5)) & 0x2)) {
169 transport->negotiate.writebraw_supported = 1;
170 }
171 transport->negotiate.secblob = smbcli_req_pull_blob(&req->in.bufinfo, transport,
172 req->in.data, req->in.data_size);
173 } else {
174 /* the old core protocol */
175 transport->negotiate.sec_mode = 0;
176 transport->negotiate.server_time = time(NULL);
177 transport->negotiate.max_xmit = transport->options.max_xmit;
178 transport->negotiate.server_zone = get_time_zone(transport->negotiate.server_time);
179 }
180
181 /* a way to force ascii SMB */
182 if (!transport->options.unicode) {
183 transport->negotiate.capabilities &= ~CAP_UNICODE;
184 }
185
186 if (!transport->options.ntstatus_support) {
187 transport->negotiate.capabilities &= ~CAP_STATUS32;
188 }
189
190 if (!transport->options.use_level2_oplocks) {
191 transport->negotiate.capabilities &= ~CAP_LEVEL_II_OPLOCKS;
192 }
193
194failed:
195 return smbcli_request_destroy(req);
196}
197
198
199/*
200 Send a negprot command (sync interface)
201*/
202NTSTATUS smb_raw_negotiate(struct smbcli_transport *transport, bool unicode, int maxprotocol)
203{
204 struct smbcli_request *req = smb_raw_negotiate_send(transport, unicode, maxprotocol);
205 return smb_raw_negotiate_recv(req);
206}
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