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
|
/*
Unix SMB/CIFS implementation.
Easy management of byte-length data
Copyright (C) Andrew Tridgell 2001
Copyright (C) Andrew Bartlett 2001
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"
const DATA_BLOB data_blob_null = { NULL, 0, NULL };
/*******************************************************************
Free() a data blob.
*******************************************************************/
static void free_data_blob(DATA_BLOB *d)
{
if ((d) && (d->free)) {
SAFE_FREE(d->data);
}
}
/*******************************************************************
Construct a data blob, must be freed with data_blob_free().
You can pass NULL for p and get a blank data blob
*******************************************************************/
DATA_BLOB data_blob(const void *p, size_t length)
{
DATA_BLOB ret;
if (!length) {
ZERO_STRUCT(ret);
return ret;
}
if (p) {
ret.data = (uint8 *)smb_xmemdup(p, length);
} else {
ret.data = SMB_XMALLOC_ARRAY(uint8, length);
}
ret.length = length;
ret.free = free_data_blob;
return ret;
}
/*******************************************************************
Construct a data blob, using supplied TALLOC_CTX.
*******************************************************************/
DATA_BLOB data_blob_talloc(TALLOC_CTX *mem_ctx, const void *p, size_t length)
{
DATA_BLOB ret;
if (!length) {
ZERO_STRUCT(ret);
return ret;
}
if (p) {
ret.data = (uint8 *)TALLOC_MEMDUP(mem_ctx, p, length);
if (ret.data == NULL)
smb_panic("data_blob_talloc: TALLOC_MEMDUP failed");
} else {
ret.data = (uint8 *)TALLOC(mem_ctx, length);
if (ret.data == NULL)
smb_panic("data_blob_talloc: TALLOC failed");
}
ret.length = length;
ret.free = NULL;
return ret;
}
/*******************************************************************
Free a data blob.
*******************************************************************/
void data_blob_free(DATA_BLOB *d)
{
if (d) {
if (d->free) {
(d->free)(d);
}
d->length = 0;
}
}
/*******************************************************************
Clear a DATA_BLOB's contents
*******************************************************************/
void data_blob_clear(DATA_BLOB *d)
{
if (d->data) {
memset(d->data, 0, d->length);
}
}
/*******************************************************************
Free a data blob and clear its contents
*******************************************************************/
void data_blob_clear_free(DATA_BLOB *d)
{
data_blob_clear(d);
data_blob_free(d);
}
/**
useful for constructing data blobs in test suites, while
avoiding const warnings
**/
DATA_BLOB data_blob_string_const(const char *str)
{
DATA_BLOB blob;
blob.data = CONST_DISCARD(uint8 *, str);
blob.length = strlen(str);
blob.free = NULL;
return blob;
}
/**
* Create a new data blob from const data
*/
DATA_BLOB data_blob_const(const void *p, size_t length)
{
DATA_BLOB blob;
blob.data = CONST_DISCARD(uint8 *, p);
blob.length = length;
blob.free = NULL;
return blob;
}
|
