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1 /* | |
2 * Copyright (C) 2011 Google 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 * | |
8 * 1. Redistributions of source code must retain the above copyright | |
9 * notice, this list of conditions and the following disclaimer. | |
10 * 2. Redistributions in binary form must reproduce the above copyright | |
11 * notice, this list of conditions and the following disclaimer in the | |
12 * documentation and/or other materials provided with the distribution. | |
13 * 3. Neither the name of Google, Inc. ("Google") nor the names of | |
14 * its contributors may be used to endorse or promote products derived | |
15 * from this software without specific prior written permission. | |
16 * | |
17 * THIS SOFTWARE IS PROVIDED BY GOOGLE AND ITS CONTRIBUTORS "AS IS" AND ANY | |
18 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED | |
19 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
20 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY | |
21 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES | |
22 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | |
23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND | |
24 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | |
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
27 */ | |
28 | |
29 | |
30 #include "config.h" | |
31 #include "core/page/Crypto.h" | |
32 | |
33 #include "core/dom/ExceptionCode.h" | |
34 #include <wtf/ArrayBufferView.h> | |
35 #include <wtf/CryptographicallyRandomNumber.h> | |
36 | |
37 namespace WebCore { | |
38 | |
39 namespace { | |
40 | |
41 bool isIntegerArray(ArrayBufferView* array) | |
42 { | |
43 ArrayBufferView::ViewType type = array->getType(); | |
44 return type == ArrayBufferView::TypeInt8 | |
45 || type == ArrayBufferView::TypeUint8 | |
46 || type == ArrayBufferView::TypeUint8Clamped | |
47 || type == ArrayBufferView::TypeInt16 | |
48 || type == ArrayBufferView::TypeUint16 | |
49 || type == ArrayBufferView::TypeInt32 | |
50 || type == ArrayBufferView::TypeUint32; | |
51 } | |
52 | |
53 } | |
54 | |
55 Crypto::Crypto() | |
56 { | |
57 ScriptWrappable::init(this); | |
58 } | |
59 | |
60 void Crypto::getRandomValues(ArrayBufferView* array, ExceptionCode& ec) | |
61 { | |
62 if (!array || !isIntegerArray(array)) { | |
63 ec = TYPE_MISMATCH_ERR; | |
64 return; | |
65 } | |
66 if (array->byteLength() > 65536) { | |
67 ec = QUOTA_EXCEEDED_ERR; | |
68 return; | |
69 } | |
70 cryptographicallyRandomValues(array->baseAddress(), array->byteLength()); | |
71 } | |
72 | |
73 } | |
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