/*

# Copyright 2016 Google Inc.

# Copyright 2017 Red Hat, Inc.

#

# Licensed under the Apache License, Version 2.0 (the "License");

# you may not use this file except in compliance with the License.

# You may obtain a copy of the License at

#

#      http://www.apache.org/licenses/LICENSE-2.0

#

# Unless required by applicable law or agreed to in writing, software

# distributed under the License is distributed on an "AS IS" BASIS,

# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

# See the License for the specific language governing permissions and

# limitations under the License.

#

################################################################################

*/

#include <assert.h>

#include <fcntl.h>

#include <stdint.h>

#include <sys/types.h>

#include <unistd.h>

#include <string.h>

#include <stdlib.h>

#include <stdbool.h>

#include <gnutls/gnutls.h>

#include "mem.h"

#include "fuzzer.h"

int LLVMFuzzerTestOneInput(const uint8_t * data, size_t size)

{

	int res;

	gnutls_session_t session;

	gnutls_certificate_credentials_t xcred;

	struct mem_st memdata;

	res = gnutls_init(&session, GNUTLS_CLIENT);

	assert(res >= 0);

	res = gnutls_certificate_allocate_credentials(&xcred);

	assert(res >= 0);

	res = gnutls_credentials_set(session, GNUTLS_CRD_CERTIFICATE, xcred);

	assert(res >= 0);

	res = gnutls_set_default_priority(session);

	assert(res >= 0);

	memdata.data = data;

	memdata.size = size;

	gnutls_transport_set_push_function(session, mem_push);

	gnutls_transport_set_pull_function(session, mem_pull);

	gnutls_transport_set_pull_timeout_function(session, mem_pull_timeout);

	gnutls_transport_set_ptr(session, &memdata);

	do {

		res = gnutls_handshake(session);

	} while (res < 0 && gnutls_error_is_fatal(res) == 0);

	if (res >= 0) {

		while (true) {

			char buf[16384];

			res = gnutls_record_recv(session, buf, sizeof(buf));

			if (res <= 0) {

				break;

			}

		}

	}

	gnutls_deinit(session);

	gnutls_certificate_free_credentials(xcred);

	return 0;

}