WebCrypto: Remove support for multi-part operations.

Source/modules/crypto/CryptoOperation.cpp

-/*
- * Copyright (C) 2013 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:
- *
- *     * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *     * 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.
- *     * Neither the name of Google Inc. 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 THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
- * OWNER OR 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/CryptoOperation.h"
-
-#include "bindings/v8/ExceptionState.h"
-#include "bindings/v8/custom/V8ArrayBufferCustom.h" // MUST precede ScriptPromiseResolver for compilation to work.
-#include "bindings/v8/ScriptPromiseResolver.h"
-#include "core/dom/ExceptionCode.h"
-#include "modules/crypto/Algorithm.h"
-#include "public/platform/WebArrayBuffer.h"
-#include "public/platform/WebCrypto.h"
-#include "wtf/ArrayBuffer.h"
-#include "wtf/ArrayBufferView.h"
-
-namespace WebCore {
-
-CryptoOperationImpl::CryptoOperationImpl()
-    : m_state(Initializing)
-    , m_impl(0)
-    , m_initializationError(0)
-{
-}
-
-bool CryptoOperationImpl::throwInitializationError(ExceptionState& es)
-{
-    ASSERT(m_state != Initializing);
-
-    if (m_initializationError) {
-        es.throwDOMException(m_initializationError);
-        return true;
-    }
-    return false;
-}
-
-ScriptObject CryptoOperationImpl::finish()
-{
-    switch (m_state) {
-    case Initializing:
-        ASSERT_NOT_REACHED();
-        return ScriptObject();
-    case Processing:
-        m_state = Finishing;
-        // NOTE: The following line can result in re-entrancy to |this|
-        m_impl->finish();
-        break;
-    case Finishing:
-        // Calling finish() twice is a no-op.
-        break;
-    case Done:
-        // Calling finish() after already complete is a no-op.
-        ASSERT(!m_impl);
-        break;
-    }
-
-    return promiseResolver()->promise();
-}
-
-void CryptoOperationImpl::initializationFailed()
-{
-    ASSERT(m_state == Initializing);
-
-    m_initializationError = NotSupportedError;
-    m_state = Done;
-}
-
-void CryptoOperationImpl::initializationSucceeded(WebKit::WebCryptoOperation* operationImpl)
-{
-    ASSERT(m_state == Initializing);
-    ASSERT(operationImpl);
-    ASSERT(!m_impl);
-
-    m_impl = operationImpl;
-    m_state = Processing;
-}
-
-void CryptoOperationImpl::completeWithError()
-{
-    ASSERT(m_state == Processing || m_state == Finishing);
-
-    m_impl = 0;
-    m_state = Done;
-    promiseResolver()->reject(ScriptValue::createNull());
-}
-
-void CryptoOperationImpl::completeWithArrayBuffer(const WebKit::WebArrayBuffer& buffer)
-{
-    ASSERT(m_state == Processing || m_state == Finishing);
-
-    m_impl = 0;
-    m_state = Done;
-    promiseResolver()->fulfill(PassRefPtr<ArrayBuffer>(buffer));
-}
-
-void CryptoOperationImpl::completeWithBoolean(bool b)
-{
-    ASSERT(m_state == Processing || m_state == Finishing);
-
-    m_impl = 0;
-    m_state = Done;
-    promiseResolver()->fulfill(ScriptValue::createBoolean(b));
-}
-
-void CryptoOperationImpl::process(const void* bytes, size_t size)
-{
-    switch (m_state) {
-    case Initializing:
-        ASSERT_NOT_REACHED();
-    case Processing:
-        m_impl->process(reinterpret_cast<const unsigned char*>(bytes), size);
-        break;
-    case Finishing:
-    case Done:
-        return;
-    }
-}
-
-ScriptObject CryptoOperationImpl::abort()
-{
-    switch (m_state) {
-    case Initializing:
-        ASSERT_NOT_REACHED();
-        break;
-    case Processing:
-    case Finishing:
-        // This will cause m_impl to be deleted.
-        m_state = Done;
-        m_impl->abort();
-        m_impl = 0;
-        promiseResolver()->reject(ScriptValue::createNull());
-    case Done:
-        ASSERT(!m_impl);
-        break;
-    }
-
-    return promiseResolver()->promise();
-}
-
-void CryptoOperationImpl::detach()
-{
-    switch (m_state) {
-    case Initializing:
-        ASSERT_NOT_REACHED();
-        break;
-    case Processing:
-        // If the operation has not been finished yet, it has no way of being
-        // finished now that the CryptoOperation is gone.
-        m_state = Done;
-        m_impl->abort();
-        m_impl = 0;
-    case Finishing:
-    case Done:
-        break;
-    }
-}
-
-void CryptoOperationImpl::ref()
-{
-    ThreadSafeRefCounted<CryptoOperationImpl>::ref();
-}
-
-void CryptoOperationImpl::deref()
-{
-    ThreadSafeRefCounted<CryptoOperationImpl>::deref();
-}
-
-ScriptPromiseResolver* CryptoOperationImpl::promiseResolver()
-{
-    if (!m_promiseResolver)
-        m_promiseResolver = ScriptPromiseResolver::create();
-    return m_promiseResolver.get();
-}
-
-CryptoOperation::~CryptoOperation()
-{
-    m_impl->detach();
-}
-
-PassRefPtr<CryptoOperation> CryptoOperation::create(const WebKit::WebCryptoAlgorithm& algorithm, CryptoOperationImpl* impl)
-{
-    return adoptRef(new CryptoOperation(algorithm, impl));
-}
-
-CryptoOperation::CryptoOperation(const WebKit::WebCryptoAlgorithm& algorithm, CryptoOperationImpl* impl)
-    : m_algorithm(algorithm)
-    , m_impl(impl)
-{
-    ASSERT(impl);
-    ScriptWrappable::init(this);
-}
-
-CryptoOperation* CryptoOperation::process(ArrayBuffer* data)
-{
-    m_impl->process(data->data(), data->byteLength());
-    return this;
-}
-
-CryptoOperation* CryptoOperation::process(ArrayBufferView* data)
-{
-    m_impl->process(data->baseAddress(), data->byteLength());
-    return this;
-}
-
-ScriptObject CryptoOperation::finish()
-{
-    return m_impl->finish();
-}
-
-ScriptObject CryptoOperation::abort()
-{
-    return m_impl->abort();
-}
-
-Algorithm* CryptoOperation::algorithm()
-{
-    if (!m_algorithmNode)
-        m_algorithmNode = Algorithm::create(m_algorithm);
-    return m_algorithmNode.get();
-}
-
-} // namespace WebCore