| // 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 = new uint8_t[count]; |
| ASSERT(buffer != NULL); |
| if (!Crypto::GetRandomBytes(count, buffer)) { |
| delete[] buffer; |
| Dart_ThrowException(DartUtils::NewDartOSError()); |
| UNREACHABLE(); |
| } |
| Dart_Handle result = Dart_NewTypedData(Dart_TypedData_kUint8, count); |
| if (Dart_IsError(result)) { |
| delete[] buffer; |
| Dart_Handle error = DartUtils::NewString("Failed to allocate storage."); |
| Dart_ThrowException(error); |
| UNREACHABLE(); |
| } |
| Dart_ListSetAsBytes(result, 0, buffer, count); |
| Dart_SetReturnValue(args, result); |
| delete[] buffer; |
| } |
| |
| } // namespace bin |
| } // namespace dart |