| /* |
| * Copyright (C) 2011 Google Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * 3. Neither the name of Google, Inc. ("Google") nor the names of |
| * its contributors may be used to endorse or promote products derived |
| * from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY GOOGLE AND ITS CONTRIBUTORS "AS IS" AND ANY |
| * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS 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 ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| |
| #include "config.h" |
| #include "modules/crypto/Crypto.h" |
| |
| #include "bindings/v8/ExceptionState.h" |
| #include "core/dom/ExceptionCode.h" |
| #include "wtf/ArrayBufferView.h" |
| #include "wtf/CryptographicallyRandomNumber.h" |
| |
| namespace WebCore { |
| |
| namespace { |
| |
| bool isIntegerArray(ArrayBufferView* array) |
| { |
| ArrayBufferView::ViewType type = array->getType(); |
| return type == ArrayBufferView::TypeInt8 |
| || type == ArrayBufferView::TypeUint8 |
| || type == ArrayBufferView::TypeUint8Clamped |
| || type == ArrayBufferView::TypeInt16 |
| || type == ArrayBufferView::TypeUint16 |
| || type == ArrayBufferView::TypeInt32 |
| || type == ArrayBufferView::TypeUint32; |
| } |
| |
| } |
| |
| Crypto::Crypto() |
| { |
| ScriptWrappable::init(this); |
| } |
| |
| // Note: This implementation must be thread-safe, as it is used by workers. |
| void Crypto::getRandomValues(ArrayBufferView* array, ExceptionState& es) |
| { |
| if (!array || !isIntegerArray(array)) { |
| es.throwUninformativeAndGenericDOMException(TypeMismatchError); |
| return; |
| } |
| if (array->byteLength() > 65536) { |
| es.throwUninformativeAndGenericDOMException(QuotaExceededError); |
| return; |
| } |
| cryptographicallyRandomValues(array->baseAddress(), array->byteLength()); |
| } |
| |
| SubtleCrypto* Crypto::subtle() |
| { |
| if (!m_subtleCrypto) |
| m_subtleCrypto = SubtleCrypto::create(); |
| return m_subtleCrypto.get(); |
| } |
| |
| } |