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/*
* 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/CryptoResultImpl.h"
#include "bindings/core/v8/Dictionary.h"
#include "bindings/core/v8/ScriptPromiseResolver.h"
#include "bindings/core/v8/ScriptState.h"
#include "bindings/core/v8/V8ArrayBuffer.h"
#include "bindings/core/v8/V8Binding.h"
#include "bindings/core/v8/V8ObjectBuilder.h"
#include "bindings/modules/v8/V8CryptoKey.h"
#include "core/dom/ContextLifecycleObserver.h"
#include "core/dom/DOMArrayBuffer.h"
#include "core/dom/DOMError.h"
#include "core/dom/DOMException.h"
#include "core/dom/ExecutionContext.h"
#include "modules/crypto/CryptoKey.h"
#include "modules/crypto/NormalizeAlgorithm.h"
#include "public/platform/Platform.h"
#include "public/platform/WebCryptoAlgorithm.h"
#include "wtf/Atomics.h"
namespace blink {
static void rejectWithTypeError(const String& errorDetails, ScriptPromiseResolver* resolver)
{
// Duplicate some of the checks done by ScriptPromiseResolver.
if (!resolver->executionContext() || resolver->executionContext()->activeDOMObjectsAreStopped())
return;
ScriptState::Scope scope(resolver->scriptState());
v8::Isolate* isolate = resolver->scriptState()->isolate();
resolver->reject(v8::Exception::TypeError(v8String(isolate, errorDetails)));
}
class CryptoResultImpl::Resolver final : public ScriptPromiseResolver {
public:
static Resolver* create(ScriptState* scriptState, CryptoResultImpl* result)
{
ASSERT(scriptState->contextIsValid());
Resolver* resolver = new Resolver(scriptState, result);
resolver->suspendIfNeeded();
resolver->keepAliveWhilePending();
return resolver;
}
void stop() override
{
m_result->cancel();
m_result = nullptr;
ScriptPromiseResolver::stop();
}
DEFINE_INLINE_VIRTUAL_TRACE()
{
visitor->trace(m_result);
ScriptPromiseResolver::trace(visitor);
}
private:
Resolver(ScriptState* scriptState, CryptoResultImpl* result)
: ScriptPromiseResolver(scriptState)
, m_result(result) { }
Member<CryptoResultImpl> m_result;
};
CryptoResultImpl::ResultCancel::ResultCancel()
: m_cancelled(0)
{
}
bool CryptoResultImpl::ResultCancel::cancelled() const
{
return acquireLoad(&m_cancelled);
}
void CryptoResultImpl::ResultCancel::cancel()
{
releaseStore(&m_cancelled, 1);
}
ExceptionCode webCryptoErrorToExceptionCode(WebCryptoErrorType errorType)
{
switch (errorType) {
case WebCryptoErrorTypeNotSupported:
return NotSupportedError;
case WebCryptoErrorTypeSyntax:
return SyntaxError;
case WebCryptoErrorTypeInvalidAccess:
return InvalidAccessError;
case WebCryptoErrorTypeData:
return DataError;
case WebCryptoErrorTypeOperation:
return OperationError;
case WebCryptoErrorTypeType:
return V8TypeError;
}
ASSERT_NOT_REACHED();
return 0;
}
CryptoResultImpl::CryptoResultImpl(ScriptState* scriptState)
: m_resolver(Resolver::create(scriptState, this))
, m_cancel(ResultCancel::create())
{
// Sync cancellation state.
if (scriptState->executionContext()->activeDOMObjectsAreStopped())
m_cancel->cancel();
}
CryptoResultImpl::~CryptoResultImpl()
{
ASSERT(!m_resolver);
}
DEFINE_TRACE(CryptoResultImpl)
{
visitor->trace(m_resolver);
CryptoResult::trace(visitor);
}
void CryptoResultImpl::clearResolver()
{
m_resolver = nullptr;
}
CryptoResultImpl* CryptoResultImpl::create(ScriptState* scriptState)
{
return new CryptoResultImpl(scriptState);
}
void CryptoResultImpl::completeWithError(WebCryptoErrorType errorType, const WebString& errorDetails)
{
if (!m_resolver)
return;
ExceptionCode ec = webCryptoErrorToExceptionCode(errorType);
// Handle TypeError separately, as it cannot be created using
// DOMException.
if (ec == V8TypeError)
rejectWithTypeError(errorDetails, m_resolver);
else
m_resolver->reject(DOMException::create(ec, errorDetails));
clearResolver();
}
void CryptoResultImpl::completeWithBuffer(const void* bytes, unsigned bytesSize)
{
if (!m_resolver)
return;
m_resolver->resolve(DOMArrayBuffer::create(bytes, bytesSize));
clearResolver();
}
void CryptoResultImpl::completeWithJson(const char* utf8Data, unsigned length)
{
if (!m_resolver)
return;
ScriptState* scriptState = m_resolver->scriptState();
ScriptState::Scope scope(scriptState);
v8::Local<v8::String> jsonString = v8AtomicString(scriptState->isolate(), utf8Data, length);
v8::TryCatch exceptionCatcher;
v8::Local<v8::Value> jsonDictionary;
if (v8Call(v8::JSON::Parse(scriptState->isolate(), jsonString), jsonDictionary, exceptionCatcher))
m_resolver->resolve(jsonDictionary);
else
m_resolver->reject(exceptionCatcher.Exception());
clearResolver();
}
void CryptoResultImpl::completeWithBoolean(bool b)
{
if (!m_resolver)
return;
m_resolver->resolve(b);
clearResolver();
}
void CryptoResultImpl::completeWithKey(const WebCryptoKey& key)
{
if (!m_resolver)
return;
m_resolver->resolve(CryptoKey::create(key));
clearResolver();
}
void CryptoResultImpl::completeWithKeyPair(const WebCryptoKey& publicKey, const WebCryptoKey& privateKey)
{
if (!m_resolver)
return;
ScriptState* scriptState = m_resolver->scriptState();
ScriptState::Scope scope(scriptState);
V8ObjectBuilder keyPair(scriptState);
keyPair.add("publicKey", ScriptValue::from(scriptState, CryptoKey::create(publicKey)));
keyPair.add("privateKey", ScriptValue::from(scriptState, CryptoKey::create(privateKey)));
m_resolver->resolve(keyPair.v8Value());
clearResolver();
}
void CryptoResultImpl::cancel()
{
ASSERT(m_cancel);
m_cancel->cancel();
m_cancel.clear();
clearResolver();
}
ScriptPromise CryptoResultImpl::promise()
{
return m_resolver ? m_resolver->promise() : ScriptPromise();
}
} // namespace blink