2 Unix SMB/CIFS implementation.
3 Easy management of byte-length data
4 Copyright (C) Andrew Tridgell 2001
5 Copyright (C) Andrew Bartlett 2001
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, write to the Free Software
19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
24 const DATA_BLOB data_blob_null = { NULL, 0, NULL };
26 /*******************************************************************
28 *******************************************************************/
30 static void free_data_blob(DATA_BLOB *d)
32 if ((d) && (d->free)) {
37 /*******************************************************************
38 Construct a data blob, must be freed with data_blob_free().
39 You can pass NULL for p and get a blank data blob
40 *******************************************************************/
42 DATA_BLOB data_blob(const void *p, size_t length)
52 ret.data = (uint8 *)smb_xmemdup(p, length);
54 ret.data = SMB_XMALLOC_ARRAY(uint8, length);
57 ret.free = free_data_blob;
61 /*******************************************************************
62 Construct a data blob, using supplied TALLOC_CTX.
63 *******************************************************************/
65 DATA_BLOB data_blob_talloc(TALLOC_CTX *mem_ctx, const void *p, size_t length)
75 ret.data = (uint8 *)TALLOC_MEMDUP(mem_ctx, p, length);
77 smb_panic("data_blob_talloc: TALLOC_MEMDUP failed");
79 ret.data = (uint8 *)TALLOC(mem_ctx, length);
81 smb_panic("data_blob_talloc: TALLOC failed");
89 /*******************************************************************
91 *******************************************************************/
93 void data_blob_free(DATA_BLOB *d)
103 /*******************************************************************
104 Clear a DATA_BLOB's contents
105 *******************************************************************/
107 void data_blob_clear(DATA_BLOB *d)
110 memset(d->data, 0, d->length);
114 /*******************************************************************
115 Free a data blob and clear its contents
116 *******************************************************************/
118 void data_blob_clear_free(DATA_BLOB *d)
125 useful for constructing data blobs in test suites, while
126 avoiding const warnings
128 DATA_BLOB data_blob_string_const(const char *str)
131 blob.data = CONST_DISCARD(uint8 *, str);
132 blob.length = strlen(str);
138 * Create a new data blob from const data
140 DATA_BLOB data_blob_const(const void *p, size_t length)
143 blob.data = CONST_DISCARD(uint8 *, p);
144 blob.length = length;