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https://github.com/samba-team/samba.git
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716e6c1efb
following the data_blob() API properly then this will cause no problems. I'm expecting chaos. this is part of the general move towards using talloc for everything in samba4 (This used to be commit 3f6b3c21e4d538aeb30b7906a75995b8f4c11223)
127 lines
3.5 KiB
C
127 lines
3.5 KiB
C
/*
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Unix SMB/CIFS implementation.
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Easy management of byte-length data
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Copyright (C) Andrew Tridgell 2001
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Copyright (C) Andrew Bartlett 2001
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include "includes.h"
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/*******************************************************************
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construct a data blob, must be freed with data_blob_free()
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you can pass NULL for p and get a blank data blob
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*******************************************************************/
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DATA_BLOB data_blob(const void *p, size_t length)
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{
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DATA_BLOB ret;
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if (length == 0) {
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ZERO_STRUCT(ret);
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return ret;
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}
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if (p) {
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ret.data = talloc_memdup(NULL, p, length);
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} else {
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ret.data = talloc(NULL, length);
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}
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if (ret.data == NULL) {
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ret.length = 0;
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return ret;
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}
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ret.length = length;
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return ret;
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}
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/*******************************************************************
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construct a data blob, using supplied TALLOC_CTX
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*******************************************************************/
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DATA_BLOB data_blob_talloc(TALLOC_CTX *mem_ctx, const void *p, size_t length)
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{
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DATA_BLOB ret = data_blob(p, length);
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if (ret.data) {
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ret.data = talloc_steal(mem_ctx, ret.data);
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}
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return ret;
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}
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/*******************************************************************
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construct a zero data blob, using supplied TALLOC_CTX.
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use this sparingly as it initialises data - better to initialise
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yourself if you want specific data in the blob
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*******************************************************************/
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DATA_BLOB data_blob_talloc_zero(TALLOC_CTX *mem_ctx, size_t length)
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{
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DATA_BLOB blob = data_blob_talloc(mem_ctx, NULL, length);
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data_blob_clear(&blob);
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return blob;
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}
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/*******************************************************************
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free a data blob
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*******************************************************************/
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void data_blob_free(DATA_BLOB *d)
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{
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if (d) {
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talloc_free(d->data);
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d->data = NULL;
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d->length = 0;
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}
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}
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/*******************************************************************
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clear a DATA_BLOB's contents
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*******************************************************************/
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void data_blob_clear(DATA_BLOB *d)
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{
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if (d->data) {
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memset(d->data, 0, d->length);
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}
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}
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/*******************************************************************
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free a data blob and clear its contents
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*******************************************************************/
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void data_blob_clear_free(DATA_BLOB *d)
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{
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data_blob_clear(d);
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data_blob_free(d);
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}
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/*******************************************************************
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check if two data blobs are equal
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*******************************************************************/
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BOOL data_blob_equal(const DATA_BLOB *d1, const DATA_BLOB *d2)
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{
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if (d1->length != d2->length) {
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return False;
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}
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if (d1->data == d2->data) {
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return True;
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}
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if (d1->data == NULL || d2->data == NULL) {
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return False;
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}
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if (memcmp(d1->data, d2->data, d1->length) == 0) {
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return True;
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}
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return False;
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}
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