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