JSValue JSSubtleCrypto::unwrapKey(ExecState* exec)
{
if (exec->argumentCount() < 5)
return exec->vm().throwException(exec, createNotEnoughArgumentsError(exec));
CryptoKeyFormat keyFormat;
if (!cryptoKeyFormatFromJSValue(exec, exec->argument(0), keyFormat)) {
ASSERT(exec->hadException());
return jsUndefined();
}
CryptoOperationData wrappedKeyData;
if (!cryptoOperationDataFromJSValue(exec, exec->uncheckedArgument(1), wrappedKeyData)) {
ASSERT(exec->hadException());
return jsUndefined();
}
RefPtr<CryptoKey> unwrappingKey = JSCryptoKey::toWrapped(exec->uncheckedArgument(2));
if (!unwrappingKey)
return throwTypeError(exec);
if (!unwrappingKey->allows(CryptoKeyUsageUnwrapKey)) {
m_impl->document()->addConsoleMessage(MessageSource::JS, MessageLevel::Error, ASCIILiteral("Key usages do not include 'unwrapKey'"));
setDOMException(exec, NOT_SUPPORTED_ERR);
return jsUndefined();
}
std::unique_ptr<CryptoAlgorithm> unwrapAlgorithm;
std::unique_ptr<CryptoAlgorithmParameters> unwrapAlgorithmParameters;
unwrapAlgorithm = createAlgorithmFromJSValue(exec, exec->uncheckedArgument(3));
if (!unwrapAlgorithm) {
ASSERT(exec->hadException());
return jsUndefined();
}
unwrapAlgorithmParameters = JSCryptoAlgorithmDictionary::createParametersForDecrypt(exec, unwrapAlgorithm->identifier(), exec->uncheckedArgument(3));
if (!unwrapAlgorithmParameters) {
ASSERT(exec->hadException());
return jsUndefined();
}
std::unique_ptr<CryptoAlgorithm> unwrappedKeyAlgorithm;
std::unique_ptr<CryptoAlgorithmParameters> unwrappedKeyAlgorithmParameters;
if (!exec->uncheckedArgument(4).isNull()) {
unwrappedKeyAlgorithm = createAlgorithmFromJSValue(exec, exec->uncheckedArgument(4));
if (!unwrappedKeyAlgorithm) {
ASSERT(exec->hadException());
return jsUndefined();
}
unwrappedKeyAlgorithmParameters = JSCryptoAlgorithmDictionary::createParametersForImportKey(exec, unwrappedKeyAlgorithm->identifier(), exec->uncheckedArgument(4));
if (!unwrappedKeyAlgorithmParameters) {
ASSERT(exec->hadException());
return jsUndefined();
}
}
bool extractable = false;
if (exec->argumentCount() >= 6) {
extractable = exec->uncheckedArgument(5).toBoolean(exec);
if (exec->hadException())
return jsUndefined();
}
CryptoKeyUsage keyUsages = 0;
if (exec->argumentCount() >= 7) {
if (!cryptoKeyUsagesFromJSValue(exec, exec->argument(6), keyUsages)) {
ASSERT(exec->hadException());
return jsUndefined();
}
}
JSPromiseDeferred* promiseDeferred = JSPromiseDeferred::create(exec, globalObject());
DeferredWrapper wrapper(exec, globalObject(), promiseDeferred);
Strong<JSDOMGlobalObject> domGlobalObject(exec->vm(), globalObject());
CryptoAlgorithm* unwrappedKeyAlgorithmPtr = unwrappedKeyAlgorithm.release();
CryptoAlgorithmParameters* unwrappedKeyAlgorithmParametersPtr = unwrappedKeyAlgorithmParameters.release();
auto decryptSuccessCallback = [domGlobalObject, keyFormat, unwrappedKeyAlgorithmPtr, unwrappedKeyAlgorithmParametersPtr, extractable, keyUsages, wrapper](const Vector<uint8_t>& result) mutable {
auto importSuccessCallback = [wrapper](CryptoKey& key) mutable {
wrapper.resolve(&key);
};
auto importFailureCallback = [wrapper]() mutable {
wrapper.reject(nullptr);
};
ExecState* exec = domGlobalObject->globalExec();
WebCore::importKey(exec, keyFormat, std::make_pair(result.data(), result.size()), std::unique_ptr<CryptoAlgorithm>(unwrappedKeyAlgorithmPtr), std::unique_ptr<CryptoAlgorithmParameters>(unwrappedKeyAlgorithmParametersPtr), extractable, keyUsages, WTF::move(importSuccessCallback), WTF::move(importFailureCallback));
if (exec->hadException()) {
// FIXME: Report exception details to console, and possibly to calling script once there is a standardized way to pass errors to WebCrypto promise reject functions.
exec->clearException();
importFailureCallback();
}
};
auto decryptFailureCallback = [wrapper, unwrappedKeyAlgorithmPtr, unwrappedKeyAlgorithmParametersPtr]() mutable {
delete unwrappedKeyAlgorithmPtr;
delete unwrappedKeyAlgorithmParametersPtr;
wrapper.reject(nullptr);
};
ExceptionCode ec = 0;
unwrapAlgorithm->decryptForUnwrapKey(*unwrapAlgorithmParameters, *unwrappingKey, wrappedKeyData, WTF::move(decryptSuccessCallback), WTF::move(decryptFailureCallback), ec);
if (ec) {
delete unwrappedKeyAlgorithmPtr;
delete unwrappedKeyAlgorithmParametersPtr;
setDOMException(exec, ec);
return jsUndefined();
}
return promiseDeferred->promise();
}
JSValue JSWebKitSubtleCrypto::unwrapKey(ExecState& state)
{
VM& vm = state.vm();
auto scope = DECLARE_THROW_SCOPE(vm);
if (state.argumentCount() < 5)
return throwException(&state, scope, createNotEnoughArgumentsError(&state));
auto keyFormat = cryptoKeyFormatFromJSValue(state, scope, state.uncheckedArgument(0));
RETURN_IF_EXCEPTION(scope, { });
auto wrappedKeyData = cryptoOperationDataFromJSValue(state, scope, state.uncheckedArgument(1));
RETURN_IF_EXCEPTION(scope, { });
RefPtr<CryptoKey> unwrappingKey = JSCryptoKey::toWrapped(vm, state.uncheckedArgument(2));
if (!unwrappingKey)
return throwTypeError(&state, scope);
if (!unwrappingKey->allows(CryptoKeyUsageUnwrapKey)) {
wrapped().document()->addConsoleMessage(MessageSource::JS, MessageLevel::Error, ASCIILiteral("Key usages do not include 'unwrapKey'"));
throwNotSupportedError(state, scope);
return jsUndefined();
}
auto unwrapAlgorithm = createAlgorithmFromJSValue(state, scope, state.uncheckedArgument(3));
RETURN_IF_EXCEPTION(scope, { });
auto unwrapAlgorithmParameters = JSCryptoAlgorithmDictionary::createParametersForDecrypt(state, scope, unwrapAlgorithm->identifier(), state.uncheckedArgument(3));
RETURN_IF_EXCEPTION(scope, { });
RefPtr<CryptoAlgorithm> unwrappedKeyAlgorithm;
RefPtr<CryptoAlgorithmParametersDeprecated> unwrappedKeyAlgorithmParameters;
if (!state.uncheckedArgument(4).isNull()) {
unwrappedKeyAlgorithm = createAlgorithmFromJSValue(state, scope, state.uncheckedArgument(4));
RETURN_IF_EXCEPTION(scope, { });
unwrappedKeyAlgorithmParameters = JSCryptoAlgorithmDictionary::createParametersForImportKey(state, scope, unwrappedKeyAlgorithm->identifier(), state.uncheckedArgument(4));
RETURN_IF_EXCEPTION(scope, { });
}
bool extractable = state.argument(5).toBoolean(&state);
RETURN_IF_EXCEPTION(scope, { });
CryptoKeyUsageBitmap keyUsages = 0;
if (state.argumentCount() >= 7) {
keyUsages = cryptoKeyUsagesFromJSValue(state, scope, state.uncheckedArgument(6));
RETURN_IF_EXCEPTION(scope, { });
}
RefPtr<DeferredPromise> wrapper = createDeferredPromise(state, domWindow());
auto promise = wrapper->promise();
Strong<JSDOMGlobalObject> domGlobalObject(state.vm(), globalObject());
auto decryptSuccessCallback = [domGlobalObject, keyFormat, unwrappedKeyAlgorithm, unwrappedKeyAlgorithmParameters, extractable, keyUsages, wrapper](const Vector<uint8_t>& result) mutable {
auto importSuccessCallback = [wrapper](CryptoKey& key) mutable {
wrapper->resolve<IDLInterface<CryptoKey>>(key);
};
auto importFailureCallback = [wrapper]() mutable {
wrapper->reject(); // FIXME: This should reject with an Exception.
};
VM& vm = domGlobalObject->vm();
auto scope = DECLARE_CATCH_SCOPE(vm);
ExecState& state = *domGlobalObject->globalExec();
WebCore::importKey(state, keyFormat, std::make_pair(result.data(), result.size()), unwrappedKeyAlgorithm, unwrappedKeyAlgorithmParameters, extractable, keyUsages, WTFMove(importSuccessCallback), WTFMove(importFailureCallback));
if (UNLIKELY(scope.exception())) {
// FIXME: Report exception details to console, and possibly to calling script once there is a standardized way to pass errors to WebCrypto promise reject functions.
scope.clearException();
wrapper->reject(); // FIXME: This should reject with an Exception.
}
};
auto decryptFailureCallback = [wrapper]() mutable {
wrapper->reject(); // FIXME: This should reject with an Exception.
};
auto result = unwrapAlgorithm->decryptForUnwrapKey(*unwrapAlgorithmParameters, *unwrappingKey, wrappedKeyData, WTFMove(decryptSuccessCallback), WTFMove(decryptFailureCallback));
if (result.hasException()) {
propagateException(state, scope, result.releaseException());
return { };
}
return promise;
}
