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/*
* Copyright (C) 2011 Google Inc. All rights reserved.
* Copyright (C) 2013 Apple 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 "Crypto.h"
#if OS(DARWIN)
#include "CommonCryptoUtilities.h"
#endif
#include "Document.h"
#include "SubtleCrypto.h"
#include "WebKitSubtleCrypto.h"
#include <runtime/ArrayBufferView.h>
#include <wtf/CryptographicallyRandomNumber.h>
namespace WebCore {
Crypto::Crypto(ScriptExecutionContext& context)
: ContextDestructionObserver(&context)
#if ENABLE(SUBTLE_CRYPTO)
, m_subtle(SubtleCrypto::create(context))
#endif
{
}
Crypto::~Crypto()
{
}
ExceptionOr<void> Crypto::getRandomValues(ArrayBufferView& array)
{
if (!isInt(array.getType()))
return Exception { TypeMismatchError };
if (array.byteLength() > 65536)
return Exception { QuotaExceededError };
#if OS(DARWIN)
int rc = CCRandomCopyBytes(kCCRandomDefault, array.baseAddress(), array.byteLength());
RELEASE_ASSERT(rc == kCCSuccess);
#else
cryptographicallyRandomValues(array.baseAddress(), array.byteLength());
#endif
return { };
}
#if ENABLE(SUBTLE_CRYPTO)
SubtleCrypto& Crypto::subtle()
{
return m_subtle;
}
ExceptionOr<WebKitSubtleCrypto&> Crypto::webkitSubtle()
{
if (!isMainThread())
return Exception { NotSupportedError };
if (!m_webkitSubtle) {
m_webkitSubtle = WebKitSubtleCrypto::create(*downcast<Document>(scriptExecutionContext()));
scriptExecutionContext()->addConsoleMessage(MessageSource::Other, MessageLevel::Warning, ASCIILiteral("WebKitSubtleCrypto is deprecated. Please use SubtleCrypto instead."));
}
return *m_webkitSubtle;
}
#endif
}
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