2 Unix SMB/CIFS implementation.
5 Copyright (C) Stefan Metzmacher 2009
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>.
22 #include "smbd/globals.h"
23 #include "../source4/libcli/smb2/smb2_constants.h"
25 extern enum protocol_types Protocol;
27 NTSTATUS smbd_smb2_request_process_negprot(struct smbd_smb2_request *req)
29 const uint8_t *inbody;
30 const uint8_t *indyn = NULL;
31 int i = req->current_idx;
34 DATA_BLOB negprot_spnego_blob;
35 uint16_t security_offset;
36 DATA_BLOB security_buffer;
37 size_t expected_body_size = 0x24;
39 size_t expected_dyn_size = 0;
41 uint16_t dialect_count;
44 /* TODO: drop the connection with INVALI_PARAMETER */
46 if (req->in.vector[i+1].iov_len != (expected_body_size & 0xFFFFFFFE)) {
47 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
50 inbody = (const uint8_t *)req->in.vector[i+1].iov_base;
52 body_size = SVAL(inbody, 0x00);
53 if (body_size != expected_body_size) {
54 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
57 dialect_count = SVAL(inbody, 0x02);
58 if (dialect_count == 0) {
59 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
62 expected_dyn_size = dialect_count * 2;
63 if (req->in.vector[i+2].iov_len < expected_dyn_size) {
64 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
66 indyn = (const uint8_t *)req->in.vector[i+2].iov_base;
68 for (c=0; c < dialect_count; c++) {
69 dialect = SVAL(indyn, c*2);
70 if (dialect == 0x0202) {
75 if (dialect != 0x0202) {
76 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
79 Protocol = PROTOCOL_SMB2;
81 if (get_remote_arch() != RA_SAMBA) {
82 set_remote_arch(RA_VISTA);
85 /* negprot_spnego() returns a the server guid in the first 16 bytes */
86 negprot_spnego_blob = negprot_spnego();
87 if (negprot_spnego_blob.data == NULL) {
88 return smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
90 talloc_steal(req, negprot_spnego_blob.data);
92 if (negprot_spnego_blob.length < 16) {
93 return smbd_smb2_request_error(req, NT_STATUS_INTERNAL_ERROR);
96 security_offset = SMB2_HDR_BODY + 0x40;
97 security_buffer = data_blob_const(negprot_spnego_blob.data + 16,
98 negprot_spnego_blob.length - 16);
100 outbody = data_blob_talloc(req->out.vector, NULL, 0x40);
101 if (outbody.data == NULL) {
102 return smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
105 SSVAL(outbody.data, 0x00, 0x40 + 1); /* struct size */
106 /*TODO: indicate signing enabled */
107 SSVAL(outbody.data, 0x02, 0); /* security mode */
108 SSVAL(outbody.data, 0x04, dialect); /* dialect revision */
109 SSVAL(outbody.data, 0x06, 0); /* reserved */
110 memcpy(outbody.data + 0x08,
111 negprot_spnego_blob.data, 16); /* server guid */
112 SIVAL(outbody.data, 0x18, 0); /* capabilities */
113 SIVAL(outbody.data, 0x1C, 0x00010000); /* max transact size */
114 SIVAL(outbody.data, 0x20, 0x00010000); /* max read size */
115 SIVAL(outbody.data, 0x24, 0x00010000); /* max write size */
116 SBVAL(outbody.data, 0x28, 0); /* system time */
117 SBVAL(outbody.data, 0x30, 0); /* server start time */
118 SSVAL(outbody.data, 0x38,
119 security_offset); /* security buffer offset */
120 SSVAL(outbody.data, 0x3A,
121 security_buffer.length); /* security buffer length */
122 SIVAL(outbody.data, 0x3C, 0); /* reserved */
124 outdyn = security_buffer;
126 return smbd_smb2_request_done(req, outbody, &outdyn);