/*
 * Copyright (C) 2022 - 2026, Stephan Mueller <smueller@chronox.de>
 *
 * License: see LICENSE file in root directory
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ALL OF
 * WHICH ARE HEREBY DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
 * USE OF THIS SOFTWARE, EVEN IF NOT ADVISED OF THE POSSIBILITY OF SUCH
 * DAMAGE.
 */

#include <errno.h>

#include "esdm_es_aux.h"
#include "esdm_rpc_server.h"
#include "esdm_rpc_service.h"
#include "memset_secure.h"
#include "priv_access.pb-c.h"

void esdm_rpc_rnd_add_entropy(PrivAccess_Service *service,
			      const RndAddEntropyRequest *request,
			      RndAddEntropyResponse_Closure closure,
			      void *closure_data)
{
	RndAddEntropyResponse response = RND_ADD_ENTROPY_RESPONSE__INIT;
	(void)service;

	if (request == NULL || request->randval.data == NULL) {
		response.ret = -EFAULT;
		closure(&response, closure_data);
	} else if (!esdm_rpc_client_is_privileged(closure_data)) {
		response.ret = -EPERM;
		closure(&response, closure_data);

	} else {
		if (request->randval.len > ESDM_RPC_MAX_DATA) {
			response.ret = -EINVAL;
		} else {
			response.ret =
				esdm_pool_insert_aux(request->randval.data,
						     request->randval.len,
						     request->entcnt);
			memset_secure(request->randval.data, 0,
				      request->randval.len);
		}

		closure(&response, closure_data);
	}
}
