1 /*
2 * Copyright (c) 2021 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 "lchown.h"
17
18 #include <cstring>
19 #include <tuple>
20 #include <unistd.h>
21
22 #include "../../common/napi/n_async/n_async_work_callback.h"
23 #include "../../common/napi/n_async/n_async_work_promise.h"
24 #include "../../common/napi/n_func_arg.h"
25 namespace OHOS {
26 namespace DistributedFS {
27 namespace ModuleFileIO {
28 using namespace std;
29
GetLchownArg(napi_env env,const NFuncArg & funcArg)30 static tuple<bool, string, int, int> GetLchownArg(napi_env env, const NFuncArg &funcArg)
31 {
32 auto [resGetFirstArg, path, unused] = NVal(env, funcArg[NARG_POS::FIRST]).ToUTF8String();
33 if (!resGetFirstArg) {
34 UniError(EINVAL).ThrowErr(env, "Invalid path");
35 return { false, "", -1, -1 };
36 }
37
38 auto [resGetSecondArg, owner] = NVal(env, funcArg[NARG_POS::SECOND]).ToInt32();
39 if (!resGetSecondArg) {
40 UniError(EINVAL).ThrowErr(env, "Invalid owner");
41 return { false, "", -1, -1 };
42 }
43
44 auto [resGetThirdArg, group] = NVal(env, funcArg[NARG_POS::THIRD]).ToInt32();
45 if (!resGetThirdArg) {
46 UniError(EINVAL).ThrowErr(env, "Invalid group");
47 return { false, "", -1, -1 };
48 }
49
50 return { true, path.get(), owner, group };
51 }
52
Sync(napi_env env,napi_callback_info info)53 napi_value Lchown::Sync(napi_env env, napi_callback_info info)
54 {
55 NFuncArg funcArg(env, info);
56 if (!funcArg.InitArgs(NARG_CNT::THREE)) {
57 UniError(EINVAL).ThrowErr(env, "Number of arguments unmatched");
58 return nullptr;
59 }
60
61 auto [resGetLchownArg, path, owner, group] = GetLchownArg(env, funcArg);
62 if (!resGetLchownArg) {
63 return nullptr;
64 }
65
66 if (lchown(path.c_str(), owner, group) == -1) {
67 UniError(errno).ThrowErr(env);
68 return nullptr;
69 }
70
71 return NVal::CreateUndefined(env).val_;
72 }
73
Async(napi_env env,napi_callback_info info)74 napi_value Lchown::Async(napi_env env, napi_callback_info info)
75 {
76 NFuncArg funcArg(env, info);
77 if (!funcArg.InitArgs(NARG_CNT::THREE, NARG_CNT::FOUR)) {
78 UniError(EINVAL).ThrowErr(env, "Number of arguments unmatched");
79 return nullptr;
80 }
81
82 auto [resGetLchownArg, path, owner, group] = GetLchownArg(env, funcArg);
83 if (!resGetLchownArg) {
84 return nullptr;
85 }
86
87 auto cbExec = [path = path, owner = owner, group = group](napi_env env) -> UniError {
88 if (lchown(path.c_str(), owner, group) == -1) {
89 return UniError(errno);
90 } else {
91 return UniError(ERRNO_NOERR);
92 }
93 };
94
95 auto cbCompl = [](napi_env env, UniError err) -> NVal {
96 if (err) {
97 return { env, err.GetNapiErr(env) };
98 }
99 return { NVal::CreateUndefined(env) };
100 };
101
102 const string procedureName = "FileIOLchown";
103 NVal thisVar(env, funcArg.GetThisVar());
104 if (funcArg.GetArgc() == NARG_CNT::THREE) {
105 return NAsyncWorkPromise(env, thisVar).Schedule(procedureName, cbExec, cbCompl).val_;
106 } else {
107 NVal cb(env, funcArg[NARG_POS::FOURTH]);
108 return NAsyncWorkCallback(env, thisVar, cb).Schedule(procedureName, cbExec, cbCompl).val_;
109 }
110 }
111 } // namespace ModuleFileIO
112 } // namespace DistributedFS
113 } // namespace OHOS
114