/*
   Unix SMB/CIFS implementation.

   Winbind client asynchronous API, utility functions

   Copyright (C) Gerald (Jerry) Carter 2007-2008


   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 3 of the License, or (at your option) any later version.

   This library 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
   Library General Public License for more details.

   You should have received a copy of the GNU Lesser General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

/* Required Headers */

#include "replace.h"
#include "libwbclient.h"
#include "../winbind_client.h"

static void wbcNamedBlobDestructor(void *ptr)
{
	struct wbcNamedBlob *b = (struct wbcNamedBlob *)ptr;

	while (b->name != NULL) {
		free(discard_const_p(char, b->name));
		free(b->blob.data);
		b += 1;
	}
}

/* Initialize a named blob and add to list of blobs */
wbcErr wbcAddNamedBlob(size_t *num_blobs,
		       struct wbcNamedBlob **pblobs,
		       const char *name,
		       uint32_t flags,
		       uint8_t *data,
		       size_t length)
{
	wbcErr wbc_status = WBC_ERR_UNKNOWN_FAILURE;
	struct wbcNamedBlob *blobs, *blob;

	if (name == NULL) {
		return WBC_ERR_INVALID_PARAM;
	}

	/*
	 * Overallocate the b->name==NULL terminator for
	 * wbcNamedBlobDestructor
	 */
	blobs = (struct wbcNamedBlob *)wbcAllocateMemory(
		*num_blobs + 2, sizeof(struct wbcNamedBlob),
		wbcNamedBlobDestructor);

	if (blobs == NULL) {
		return WBC_ERR_NO_MEMORY;
	}

	if (*pblobs != NULL) {
		struct wbcNamedBlob *old = *pblobs;
		memcpy(blobs, old, sizeof(struct wbcNamedBlob) * (*num_blobs));
		if (*num_blobs != 0) {
			/* end indicator for wbcNamedBlobDestructor */
			old[0].name = NULL;
		}
		wbcFreeMemory(old);
	}
	*pblobs = blobs;

	blob = &blobs[*num_blobs];

	blob->name = strdup(name);
	BAIL_ON_PTR_ERROR(blob->name, wbc_status);
	blob->flags = flags;

	blob->blob.length = length;
	blob->blob.data	= (uint8_t *)malloc(length);
	BAIL_ON_PTR_ERROR(blob->blob.data, wbc_status);
	memcpy(blob->blob.data, data, length);

	*num_blobs += 1;
	*pblobs = blobs;
	blobs = NULL;

	wbc_status = WBC_ERR_SUCCESS;
done:
	wbcFreeMemory(blobs);
	return wbc_status;
}