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 "napi/native_api.h"
17 #include <cerrno>
18 #include <cstdarg>
19 #include <syslog.h>
20 #define PARAM_0 0
21 #define ONEVAL (-1)
22 #define ONEVALS 1
23 #define SUCCESS 1
24 #define FAIL (-1)
25 #define NO_ERR 0
26 #define ERRON_0 0
27
Openlog(napi_env env, napi_callback_info info)28 static napi_value Openlog(napi_env env, napi_callback_info info)
29 {
30 errno = NO_ERR;
31 const char param[] = "MyMsgMARK";
32 openlog(param, LOG_PID, NO_ERR);
33 int ret = FAIL;
34 if (errno == NO_ERR) {
35 ret = SUCCESS;
36 }
37 napi_value result = nullptr;
38 napi_create_int32(env, ret, &result);
39 return result;
40 }
41
Setlogmask(napi_env env, napi_callback_info info)42 static napi_value Setlogmask(napi_env env, napi_callback_info info)
43 {
44 int result = setlogmask(PARAM_0);
45
46 if (result != setlogmask(result)) {
47 napi_value result;
48 napi_create_int32(env, ONEVAL, &result);
49 return result;
50 } else {
51 napi_value result;
52 napi_create_int32(env, PARAM_0, &result);
53 return result;
54 }
55 }
56
Syslog(napi_env env, napi_callback_info info)57 static napi_value Syslog(napi_env env, napi_callback_info info)
58 {
59 errno = ERRON_0;
60 int priority = LOG_USER;
61 const char param[] = "MyMsgMARK";
62 char message[] = "Hello, syslog!";
63 openlog(param, LOG_PID, NO_ERR);
64 syslog(priority, "%s", message);
65 int ret = ONEVAL;
66 if (errno == PARAM_0) {
67 ret = ONEVALS;
68 }
69 napi_value result = nullptr;
70 napi_create_int32(env, ret, &result);
71 return result;
72 }
73
74 EXTERN_C_START
Init(napi_env env, napi_value exports)75 static napi_value Init(napi_env env, napi_value exports)
76 {
77 napi_property_descriptor desc[] = {
78 {"setlogmask", nullptr, Setlogmask, nullptr, nullptr, nullptr, napi_default, nullptr},
79 {"openlog", nullptr, Openlog, nullptr, nullptr, nullptr, napi_default, nullptr},
80 {"syslog", nullptr, Syslog, nullptr, nullptr, nullptr, napi_default, nullptr}};
81 napi_define_properties(env, exports, sizeof(desc) / sizeof(desc[0]), desc);
82 return exports;
83 }
84
85 EXTERN_C_END
86
87 static napi_module demoModule = {
88 .nm_version = 1,
89 .nm_flags = 0,
90 .nm_filename = nullptr,
91 .nm_register_func = Init,
92 .nm_modname = "syslog",
93 .nm_priv = ((void *)0),
94 .reserved = {0},
95 };
96
RegisterModule(void)97 extern "C" __attribute__((constructor)) void RegisterModule(void) { napi_module_register(&demoModule); }
98