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      1 // Copyright 2014 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #include "config.h"
      6 #include "bindings/modules/v8/V8CryptoKey.h"
      7 
      8 #include "bindings/core/v8/Dictionary.h"
      9 #include "bindings/core/v8/V8Binding.h"
     10 #include "bindings/core/v8/custom/V8Uint8ArrayCustom.h"
     11 #include "public/platform/WebCryptoKeyAlgorithm.h"
     12 #include "wtf/Uint8Array.h"
     13 
     14 namespace blink {
     15 
     16 class DictionaryBuilder : public blink::WebCryptoKeyAlgorithmDictionary {
     17 public:
     18     DictionaryBuilder(v8::Handle<v8::Object> holder, v8::Isolate* isolate)
     19         : m_holder(holder)
     20         , m_isolate(isolate)
     21         , m_dictionary(Dictionary::createEmpty(isolate))
     22     {
     23     }
     24 
     25     virtual void setString(const char* propertyName, const char* value)
     26     {
     27         m_dictionary.set(propertyName, value);
     28     }
     29 
     30     virtual void setUint(const char* propertyName, unsigned value)
     31     {
     32         m_dictionary.set(propertyName, value);
     33     }
     34 
     35     virtual void setAlgorithm(const char* propertyName, const blink::WebCryptoAlgorithm& algorithm)
     36     {
     37         ASSERT(algorithm.paramsType() == blink::WebCryptoAlgorithmParamsTypeNone);
     38 
     39         Dictionary algorithmValue = Dictionary::createEmpty(m_isolate);
     40         algorithmValue.set("name", blink::WebCryptoAlgorithm::lookupAlgorithmInfo(algorithm.id())->name);
     41         m_dictionary.set(propertyName, algorithmValue);
     42     }
     43 
     44     virtual void setUint8Array(const char* propertyName, const blink::WebVector<unsigned char>& vector)
     45     {
     46         RefPtr<Uint8Array> uint8Array = Uint8Array::create(vector.data(), vector.size());
     47         m_dictionary.set(propertyName, toV8(uint8Array.get(), m_holder, m_isolate));
     48     }
     49 
     50     const Dictionary& dictionary() const { return m_dictionary; }
     51 
     52 private:
     53     v8::Handle<v8::Object> m_holder;
     54     v8::Isolate* m_isolate;
     55     Dictionary m_dictionary;
     56 };
     57 
     58 void V8CryptoKey::algorithmAttributeGetterCustom(const v8::PropertyCallbackInfo<v8::Value>& info)
     59 {
     60     CryptoKey* impl = V8CryptoKey::toImpl(info.Holder());
     61 
     62     DictionaryBuilder builder(info.Holder(), info.GetIsolate());
     63     impl->key().algorithm().writeToDictionary(&builder);
     64 
     65     v8SetReturnValue(info, builder.dictionary().v8Value());
     66 }
     67 
     68 } // namespace blink
     69