1 /*
2 * Copyright (c) 2022-2023 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 #include "loader.h"
16
17 #include <dlfcn.h>
18 #include <fstream>
19
20 #include "pasteboard_hilog.h"
21 namespace OHOS::MiscServices {
Loader()22 Loader::Loader()
23 {
24 }
25
~Loader()26 Loader::~Loader()
27 {
28 }
29
LoadComponents()30 void Loader::LoadComponents()
31 {
32 Config config = LoadConfig();
33 for (auto &component : config.components) {
34 if (component.lib.empty()) {
35 continue;
36 }
37
38 // no need to close the component, so we don't keep the handles
39 auto handle = dlopen(component.lib.c_str(), RTLD_LAZY);
40 if (handle == nullptr) {
41 PASTEBOARD_HILOGE(
42 PASTEBOARD_MODULE_SERVICE, "dlopen(%{public}s) failed(%{public}d)!", component.lib.c_str(), errno);
43 continue;
44 }
45
46 if (component.constructor.empty()) {
47 continue;
48 }
49
50 auto ctor = reinterpret_cast<Constructor>(dlsym(handle, component.constructor.c_str()));
51 if (ctor == nullptr) {
52 continue;
53 }
54 ctor(component.params.c_str());
55 }
56 }
57
LoadConfig()58 Config Loader::LoadConfig()
59 {
60 Config config;
61 std::string context;
62 std::ifstream fin(CONF_FILE);
63 while (fin.good()) {
64 std::string line;
65 std::getline(fin, line);
66 context += line;
67 }
68 config.Unmarshall(context);
69 return config;
70 }
71 } // namespace OHOS::MiscServices