1 /*
2  * Copyright (c) 2024 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 "library_linux.h"
17 
18 #include <dlfcn.h>
19 
20 #include <base/containers/string.h>
21 #include <core/log.h>
22 #include <core/namespace.h>
23 
24 CORE_BEGIN_NAMESPACE()
25 using BASE_NS::string;
26 using BASE_NS::string_view;
27 
LibraryLinux(const string_view filename)28 LibraryLinux::LibraryLinux(const string_view filename)
29 {
30     string tmp(filename);
31     libraryHandle_ = dlopen(tmp.c_str(), RTLD_NOW | RTLD_LOCAL);
32     if (!libraryHandle_) {
33         const char* errorMessage = dlerror();
34         if (errorMessage != nullptr) {
35             CORE_LOG_E("Loading dynamic library '%s' failed: %s", filename.data(), errorMessage);
36         }
37     }
38 }
39 
~LibraryLinux()40 LibraryLinux::~LibraryLinux()
41 {
42     if (libraryHandle_) {
43         dlclose(libraryHandle_);
44         libraryHandle_ = nullptr;
45     }
46 }
47 
GetPlugin() const48 IPlugin* LibraryLinux::GetPlugin() const
49 {
50     if (!libraryHandle_) {
51         return nullptr;
52     }
53 
54     return reinterpret_cast<IPlugin*>(dlsym(libraryHandle_, "gPluginData"));
55 }
56 
Destroy()57 void LibraryLinux::Destroy()
58 {
59     delete this;
60 }
61 
Load(const string_view filePath)62 ILibrary::Ptr ILibrary::Load(const string_view filePath)
63 {
64     return ILibrary::Ptr { new LibraryLinux(filePath) };
65 }
66 
GetFileExtension()67 string_view ILibrary::GetFileExtension()
68 {
69     return ".so";
70 }
71 CORE_END_NAMESPACE()
72