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1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file |
2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
4 | 4 |
5 #include "bin/crypto.h" | 5 #include "bin/crypto.h" |
6 #include "bin/dartutils.h" | 6 #include "bin/dartutils.h" |
7 | 7 |
8 #include "include/dart_api.h" | 8 #include "include/dart_api.h" |
9 | 9 |
10 | 10 |
11 namespace dart { | 11 namespace dart { |
12 namespace bin { | 12 namespace bin { |
13 | 13 |
14 void FUNCTION_NAME(Crypto_GetRandomBytes)(Dart_NativeArguments args) { | 14 void FUNCTION_NAME(Crypto_GetRandomBytes)(Dart_NativeArguments args) { |
15 Dart_Handle count_obj = Dart_GetNativeArgument(args, 0); | 15 Dart_Handle count_obj = Dart_GetNativeArgument(args, 0); |
16 int64_t count = 0; | 16 const int64_t kMaxRandomBytes = 4096; |
17 if (!DartUtils::GetInt64Value(count_obj, &count)) { | 17 int64_t count64 = 0; |
| 18 if (!DartUtils::GetInt64Value(count_obj, &count64) || |
| 19 (count64 < 0) || (count64 > kMaxRandomBytes)) { |
18 Dart_Handle error = | 20 Dart_Handle error = |
19 DartUtils::NewString("Invalid argument, must be an int."); | 21 DartUtils::NewString("Invalid argument: count must be a positive int " |
| 22 "less than or equal to 4096."); |
20 Dart_ThrowException(error); | 23 Dart_ThrowException(error); |
21 } | 24 } |
| 25 intptr_t count = static_cast<intptr_t>(count64); |
22 uint8_t* buffer = new uint8_t[count]; | 26 uint8_t* buffer = new uint8_t[count]; |
23 ASSERT(buffer != NULL); | 27 ASSERT(buffer != NULL); |
24 if (!Crypto::GetRandomBytes(count, buffer)) { | 28 if (!Crypto::GetRandomBytes(count, buffer)) { |
25 delete[] buffer; | 29 delete[] buffer; |
26 Dart_ThrowException(DartUtils::NewDartOSError()); | 30 Dart_ThrowException(DartUtils::NewDartOSError()); |
27 } | 31 } |
28 Dart_Handle result = Dart_NewTypedData(Dart_TypedData_kUint8, count); | 32 Dart_Handle result = Dart_NewTypedData(Dart_TypedData_kUint8, count); |
29 if (Dart_IsError(result)) { | 33 if (Dart_IsError(result)) { |
30 delete[] buffer; | 34 delete[] buffer; |
31 Dart_Handle error = DartUtils::NewString("Failed to allocate storage."); | 35 Dart_Handle error = DartUtils::NewString("Failed to allocate storage."); |
32 Dart_ThrowException(error); | 36 Dart_ThrowException(error); |
33 } | 37 } |
34 Dart_ListSetAsBytes(result, 0, buffer, count); | 38 Dart_ListSetAsBytes(result, 0, buffer, count); |
35 Dart_SetReturnValue(args, result); | 39 Dart_SetReturnValue(args, result); |
36 delete[] buffer; | 40 delete[] buffer; |
37 } | 41 } |
38 | 42 |
39 } // namespace bin | 43 } // namespace bin |
40 } // namespace dart | 44 } // namespace dart |
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