WebCrypto: Add framework for AlgorithmIdentifier normalization.

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
@@ skipping 11 matching lines @@
  * 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 "core/fileapi/Stream.h"
+#include "modules/crypto/CryptoOperation.h"
 
-#include "core/fileapi/BlobRegistry.h"
-#include "core/fileapi/BlobURL.h"
-#include "core/platform/network/BlobData.h"
+#include "modules/crypto/AesCbcParams.h"
+#include "modules/crypto/AesKeyGenParams.h"
+#include "modules/crypto/Algorithm.h"
 
 namespace WebCore {
 
-Stream::Stream(const String& mediaType)
-    : m_mediaType(mediaType)
-    , m_isNeutered(false)
+namespace {
+
+PassRefPtr<Algorithm> createAlgorithm(const WebKit::WebCryptoAlgorithm& algorithm)
+{
+    switch (algorithm.paramsType()) {
+    case WebKit::WebCryptoAlgorithmParamsTypeNone:
+        return Algorithm::create(algorithm);
+    case WebKit::WebCryptoAlgorithmParamsTypeAesCbcParams:
+        return AesCbcParams::create(algorithm);
+    case WebKit::WebCryptoAlgorithmParamsTypeAesKeyGenParams:
+        return AesKeyGenParams::create(algorithm);
+    }
+    ASSERT_NOT_REACHED();
+    return 0;
+}
+
+} // namespace
+
+CryptoOperation::CryptoOperation(const WebKit::WebCryptoAlgorithm& algorithm)
+    : m_algorithm(algorithm)
 {
     ScriptWrappable::init(this);
-
-    // Create a new internal URL for a stream and register it with the provided
-    // media type.
-    m_internalURL = BlobURL::createInternalURL();
-    BlobRegistry::registerStreamURL(m_internalURL, m_mediaType);
 }
 
-void Stream::addData(const char* data, size_t len)
+Algorithm* CryptoOperation::algorithm()
 {
-    RefPtr<RawData> buffer(RawData::create());
-    buffer->mutableData()->resize(len);
-    memcpy(buffer->mutableData()->data(), data, len);
-    BlobRegistry::addDataToStream(m_internalURL, buffer);
-}
-
-void Stream::finalize()
-{
-    BlobRegistry::finalizeStream(m_internalURL);
-}
-
-Stream::~Stream()
-{
-    BlobRegistry::unregisterBlobURL(m_internalURL);
+    if (!m_algorithmNode)
+        m_algorithmNode = createAlgorithm(m_algorithm);
+    return m_algorithmNode.get();
 }
 
 } // namespace WebCore