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
|
/*
Unix SMB/CIFS implementation.
routines for marshalling/unmarshalling basic types
Copyright (C) Andrew Tridgell 2003
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"
#define NDR_NEED_BYTES(ndr, n) do { \
if ((n) > ndr->data_size || ndr->offset + (n) > ndr->data_size) { \
return NT_STATUS_BUFFER_TOO_SMALL; \
} \
} while(0)
#define NDR_ALIGN(ndr, n) do { \
ndr->offset = (ndr->offset + (n-1)) & ~(n-1); \
if (ndr->offset >= ndr->data_size) { \
return NT_STATUS_BUFFER_TOO_SMALL; \
} \
} while(0)
/*
parse a GUID
*/
NTSTATUS ndr_parse_guid(struct ndr_parse *ndr, GUID *guid)
{
int i;
NDR_NEED_BYTES(ndr, GUID_SIZE);
for (i=0;i<GUID_SIZE;i++) {
guid->info[i] = CVAL(ndr->data, ndr->offset + i);
}
ndr->offset += i;
return NT_STATUS_OK;
}
/*
parse a u8
*/
NTSTATUS ndr_parse_u8(struct ndr_parse *ndr, uint8 *v)
{
NDR_NEED_BYTES(ndr, 1);
*v = CVAL(ndr->data, ndr->offset);
ndr->offset += 1;
return NT_STATUS_OK;
}
/*
parse a u16
*/
NTSTATUS ndr_parse_u16(struct ndr_parse *ndr, uint16 *v)
{
NDR_ALIGN(ndr, 2);
NDR_NEED_BYTES(ndr, 2);
if (ndr->flags & LIBNDR_FLAG_BIGENDIAN) {
*v = RSVAL(ndr->data, ndr->offset);
} else {
*v = SVAL(ndr->data, ndr->offset);
}
ndr->offset += 2;
return NT_STATUS_OK;
}
/*
parse a u32
*/
NTSTATUS ndr_parse_u32(struct ndr_parse *ndr, uint32 *v)
{
NDR_ALIGN(ndr, 4);
NDR_NEED_BYTES(ndr, 4);
if (ndr->flags & LIBNDR_FLAG_BIGENDIAN) {
*v = RIVAL(ndr->data, ndr->offset);
} else {
*v = IVAL(ndr->data, ndr->offset);
}
ndr->offset += 2;
return NT_STATUS_OK;
}
|
