1/*
2 * Copyright (C) 2017 Apple Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
23 * THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#include "config.h"
27#include "ISOSchemeInformationBox.h"
28
29#include "ISOTrackEncryptionBox.h"
30#include <JavaScriptCore/DataView.h>
31
32using JSC::DataView;
33
34namespace WebCore {
35
36bool ISOSchemeInformationBox::parse(DataView& view, unsigned& offset)
37{
38 unsigned localOffset = offset;
39 if (!ISOBox::parse(view, localOffset))
40 return false;
41
42 auto schemeSpecificBoxType = ISOBox::peekBox(view, localOffset);
43 if (!schemeSpecificBoxType)
44 return false;
45
46 if (schemeSpecificBoxType.value().first == ISOTrackEncryptionBox::boxTypeName()) {
47 if (localOffset + schemeSpecificBoxType.value().second > offset + m_size)
48 return false;
49
50 m_schemeSpecificData = std::make_unique<ISOTrackEncryptionBox>();
51 if (!m_schemeSpecificData->read(view, localOffset))
52 return false;
53 }
54
55 return true;
56}
57
58}
59