1 /* 2 * Copyright (c) 2024-2025 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 "dh_modem_context_ext.h" 17 18 #include <dlfcn.h> 19 #include <string> 20 21 #include "distributed_hardware_errno.h" 22 #include "distributed_hardware_log.h" 23 namespace OHOS { 24 namespace DistributedHardware { 25 IMPLEMENT_SINGLE_INSTANCE(DHModemContextExt); 26 27 constexpr const char* LIB_DISTRIBUTEDMODEM_EXT_NAME = "libdistributedmodem_ext.z.so"; 28 DHModemContextExt()29DHModemContextExt::DHModemContextExt() 30 { 31 DHLOGI("Ctor DHModemContextExt"); 32 } 33 ~DHModemContextExt()34DHModemContextExt::~DHModemContextExt() 35 { 36 DHLOGI("Dtor DHModemContextExt"); 37 } 38 GetHandler()39int32_t DHModemContextExt::GetHandler() 40 { 41 soHandle_ = dlopen(LIB_DISTRIBUTEDMODEM_EXT_NAME, RTLD_LAZY | RTLD_NODELETE); 42 if (soHandle_ == nullptr) { 43 DHLOGE("load so failed, failed reason: %{public}s", dlerror()); 44 return ERR_DH_FWK_POINTER_IS_NULL; 45 } 46 return DH_FWK_SUCCESS; 47 } 48 GetModemExtInstance()49std::shared_ptr<IDistributedModemExt> DHModemContextExt::GetModemExtInstance() 50 { 51 if (soHandle_ == nullptr && GetHandler() != DH_FWK_SUCCESS) { 52 DHLOGE("load modem_ext so failed."); 53 return nullptr; 54 } 55 auto func = (CreateDistributedModemExtImplFuncPtr)dlsym(soHandle_, "CreateDistributedModemExtImplObject"); 56 if (dlerror() != nullptr || func == nullptr) { 57 dlclose(soHandle_); 58 DHLOGE("Create object function is not exist."); 59 return nullptr; 60 } 61 return std::shared_ptr<IDistributedModemExt>(func()); 62 } 63 UnInit()64int32_t DHModemContextExt::UnInit() 65 { 66 DHLOGI("dlclose modem_ext so."); 67 if (soHandle_ == nullptr) { 68 DHLOGE("handler is null."); 69 return ERR_DH_FWK_LOADER_HANDLER_IS_NULL; 70 } 71 72 if (dlclose(soHandle_) != 0) { 73 DHLOGE("dlclose modem_ext so failed."); 74 soHandle_ = nullptr; 75 return ERR_DH_FWK_LOADER_DLCLOSE_FAIL; 76 } 77 soHandle_ = nullptr; 78 return DH_FWK_SUCCESS; 79 } 80 } // namespace DistributedHardware 81 } // namespace OHOS 82