1 /*
2 * Copyright (c) 2023 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16 #include <js_native_api.h>
17 #include <js_native_api_types.h>
18 #include <node_api.h>
19 #include <sys/random.h>
20
21 #define PARAM_0 0
22 #define MPARAM_1 1
23
Getrandom(napi_env env, napi_callback_info info)24 static napi_value Getrandom(napi_env env, napi_callback_info info)
25 {
26 int ret = PARAM_0;
27 unsigned int tmp = PARAM_0;
28 size_t len = getrandom(&tmp, sizeof(unsigned int), GRND_NONBLOCK);
29 if (len == MPARAM_1) {
30 ret = MPARAM_1;
31 }
32 napi_value result = nullptr;
33 napi_create_int32(env, ret, &result);
34 return result;
35 }
36
37 EXTERN_C_START
Init(napi_env env, napi_value exports)38 static napi_value Init(napi_env env, napi_value exports)
39 {
40 napi_property_descriptor desc[] = {
41 {"getrandom", nullptr, Getrandom, nullptr, nullptr, nullptr, napi_default, nullptr},
42 };
43 napi_define_properties(env, exports, sizeof(desc) / sizeof(desc[0]), desc);
44 return exports;
45 }
46 EXTERN_C_END
47
48 static napi_module demoModule = {
49 .nm_version = 1,
50 .nm_flags = 0,
51 .nm_filename = nullptr,
52 .nm_register_func = Init,
53 .nm_modname = "random1",
54 .nm_priv = ((void *)0),
55 .reserved = {0},
56 };
57
RegisterModule(void)58 extern "C" __attribute__((constructor)) void RegisterModule(void) { napi_module_register(&demoModule); }
59