1// Copyright 2016 The Fuchsia Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#include "struct.h"
6
7#include <stdint.h>
8
9_Static_assert(sizeof(mojo_struct_header_t) == 8u, "mojo_struct_header_t should be 8 bytes");
10
11bool mojo_validate_struct_header(const void* data, size_t size) {
12    if (size < sizeof(mojo_struct_header_t) || size > UINT32_MAX) {
13        return false;
14    }
15
16    const mojo_struct_header_t* header = (const mojo_struct_header_t*)data;
17
18    if (header->num_bytes < sizeof(mojo_struct_header_t) || header->num_bytes > size) {
19        return false;
20    }
21
22    return true;
23}
24