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 "lib_loader.h"
17
18 #include <dlfcn.h>
19 #include <string>
20
21 #include "directory_ex.h"
22 #include "security_collector_log.h"
23
24 namespace OHOS::Security::SecurityCollector {
LibLoader(const std::string soPath)25 LibLoader::LibLoader(const std::string soPath)
26 : m_libPath(soPath)
27 {
28 }
29
~LibLoader()30 LibLoader::~LibLoader()
31 {
32 }
33
LoadLib()34 ErrorCode LibLoader::LoadLib()
35 {
36 LOGI("LoadLib start");
37 std::string realPath;
38 if (!PathToRealPath(m_libPath, realPath) || realPath.find("/system/lib") != 0) {
39 LOGE("LoadLib m_libPath error, realPath: %{public}s", realPath.c_str());
40 return RET_DLOPEN_LIB_FAIL;
41 }
42 m_handle = dlopen(realPath.c_str(), RTLD_LAZY);
43 if (m_handle == nullptr) {
44 LOGE("LoadLib m_handle error");
45 return RET_DLOPEN_LIB_FAIL;
46 }
47 LOGI("dlopen success");
48 return SUCCESS;
49 }
50
UnLoadLib()51 void LibLoader::UnLoadLib()
52 {
53 LOGI("UnLoadLib start");
54 if (m_handle != nullptr) {
55 dlclose(m_handle);
56 }
57 // should call dlclose(m_handle)
58 LOGI("dlclose end");
59 m_handle = nullptr;
60 }
61
CallGetCollector()62 ICollector* LibLoader::CallGetCollector()
63 {
64 LOGI("CallGetCollector start");
65 if (m_handle == nullptr) {
66 LOGE("lib not found");
67 return nullptr;
68 }
69 typedef ICollector* (*GetCollectorFunc)();
70 GetCollectorFunc getCollector = reinterpret_cast<GetCollectorFunc>(dlsym(m_handle, "GetCollector"));
71 if (!getCollector) {
72 LOGE("Failed to get GetCollector function");
73 return nullptr;
74 }
75 return getCollector();
76 }
77 }