1 /*
2 * Copyright (c) 2022 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 "rmdirent.h"
17
18 #include <cstring>
19 #include <dirent.h>
20 #include <sys/stat.h>
21 #include <sys/types.h>
22 #include <tuple>
23 #include <unistd.h>
24
25 #include "../../common/napi/n_async/n_async_work_callback.h"
26 #include "../../common/napi/n_async/n_async_work_promise.h"
27 #include "../../common/napi/n_func_arg.h"
28
29 namespace OHOS {
30 namespace DistributedFS {
31 namespace ModuleFileIO {
32 using namespace std;
33
ParseJsPath(napi_env env,napi_value pathFromJs)34 static tuple<bool, unique_ptr<char[]>> ParseJsPath(napi_env env, napi_value pathFromJs)
35 {
36 auto [succ, path, ignore] = NVal(env, pathFromJs).ToUTF8StringPath();
37 return {succ, move(path)};
38 }
39
rmdirent(napi_env env,string path)40 static UniError rmdirent(napi_env env, string path)
41 {
42 if (rmdir(path.c_str()) == 0) {
43 return UniError(ERRNO_NOERR);
44 }
45 auto dir = opendir(path.c_str());
46 if (!dir) {
47 return UniError(errno);
48 }
49 struct dirent* entry = readdir(dir);
50 while (entry) {
51 if (strcmp(entry->d_name, ".") == 0 || strcmp(entry->d_name, "..") == 0) {
52 entry = readdir(dir);
53 continue;
54 }
55 struct stat fileInformation;
56 string filePath = path + '/';
57 filePath.insert(filePath.length(), entry->d_name);
58 if (stat(filePath.c_str(), &fileInformation) != 0) {
59 closedir(dir);
60 return UniError(errno);
61 }
62 if ((fileInformation.st_mode & S_IFMT) == S_IFDIR) {
63 auto err = rmdirent(env, filePath);
64 if (err) {
65 closedir(dir);
66 return err;
67 }
68 } else {
69 if (unlink(filePath.c_str()) != 0) {
70 closedir(dir);
71 return UniError(errno);
72 }
73 }
74 entry = readdir(dir);
75 }
76 closedir(dir);
77 if (rmdir(path.c_str()) != 0) {
78 return UniError(errno);
79 }
80 return UniError(ERRNO_NOERR);
81 }
82
Sync(napi_env env,napi_callback_info info)83 napi_value Rmdirent::Sync(napi_env env, napi_callback_info info)
84 {
85 NFuncArg funcArg(env, info);
86
87 if (!funcArg.InitArgs(NARG_CNT::ONE)) {
88 UniError(EINVAL).ThrowErr(env, "Number of arguments unmatched");
89 return nullptr;
90 }
91
92 auto [succ, path] = ParseJsPath(env, funcArg[NARG_POS::FIRST]);
93 if (!succ) {
94 UniError(EINVAL).ThrowErr(env, "Invalid path");
95 return nullptr;
96 }
97
98 auto err = rmdirent(env, string(path.get()));
99 if (err) {
100 err.ThrowErr(env);
101 return nullptr;
102 }
103 return NVal::CreateUndefined(env).val_;
104 }
105
Async(napi_env env,napi_callback_info info)106 napi_value Rmdirent::Async(napi_env env, napi_callback_info info)
107 {
108 NFuncArg funcArg(env, info);
109 if (!funcArg.InitArgs(NARG_CNT::ONE, NARG_CNT::TWO)) {
110 UniError(EINVAL).ThrowErr(env, "Number of arguments unmatched");
111 return nullptr;
112 }
113
114 auto [succ, path] = ParseJsPath(env, funcArg[NARG_POS::FIRST]);
115 if (!succ) {
116 UniError(EINVAL).ThrowErr(env, "Invalid path");
117 return nullptr;
118 }
119
120 auto cbExec = [path = string(path.get())](napi_env env) -> UniError {
121 return rmdirent(env, path);
122 };
123 auto cbCompl = [](napi_env env, UniError err) -> NVal {
124 if (err) {
125 return { env, err.GetNapiErr(env) };
126 } else {
127 return NVal::CreateUndefined(env);
128 }
129 };
130
131 NVal thisVar(env, funcArg.GetThisVar());
132 size_t argc = funcArg.GetArgc();
133 if (argc == NARG_CNT::ONE) {
134 return NAsyncWorkPromise(env, thisVar).Schedule(rmdirProcedureName, cbExec, cbCompl).val_;
135 } else {
136 NVal cb(env, funcArg[NARG_POS::SECOND]);
137 return NAsyncWorkCallback(env, thisVar, cb).Schedule(rmdirProcedureName, cbExec, cbCompl).val_;
138 }
139 }
140 } // namespace ModuleFileIO
141 } // namespace DistributedFS
142 } // namespace OHOS