blob: 24b5f2bda80f5fa4700866988b1ecd0c131fce92 [file] [log] [blame]
// Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.
#include "bin/crypto.h"
#include "bin/dartutils.h"
#include "include/dart_api.h"
namespace dart {
namespace bin {
void FUNCTION_NAME(Crypto_GetRandomBytes)(Dart_NativeArguments args) {
Dart_Handle count_obj = Dart_GetNativeArgument(args, 0);
const int64_t kMaxRandomBytes = 4096;
int64_t count64 = 0;
if (!DartUtils::GetInt64Value(count_obj, &count64) || (count64 < 0) ||
(count64 > kMaxRandomBytes)) {
Dart_Handle error = DartUtils::NewString(
"Invalid argument: count must be a positive int "
"less than or equal to 4096.");
Dart_ThrowException(error);
}
intptr_t count = static_cast<intptr_t>(count64);
uint8_t* buffer = Dart_ScopeAllocate(count);
ASSERT(buffer != NULL);
if (!Crypto::GetRandomBytes(count, buffer)) {
Dart_ThrowException(DartUtils::NewDartOSError());
UNREACHABLE();
}
Dart_Handle result = Dart_NewTypedData(Dart_TypedData_kUint8, count);
if (Dart_IsError(result)) {
Dart_Handle error = DartUtils::NewString("Failed to allocate storage.");
Dart_ThrowException(error);
UNREACHABLE();
}
Dart_ListSetAsBytes(result, 0, buffer, count);
Dart_SetReturnValue(args, result);
}
} // namespace bin
} // namespace dart