src/common/app2ext_dynamic_service.cc

   1 // Copyright (c) 2017 Samsung Electronics Co., Ltd All Rights Reserved
   2 // Use of this source code is governed by an apache-2.0 license that can be
   3 // found in the LICENSE file.
   4
   5 #include <functional>
   6 #include <string>
   7
   8 #include "common/app2ext_dynamic_service.h"
   9
  10
  11
  12 namespace {
  13
  14 const std::string& disable_pkg_sym_name = "app2ext_usr_disable_external_pkg";
  15 const std::string& enable_pkg_sym_name = "app2ext_usr_enable_external_pkg";
  16 const std::string& get_image_path_sym_name = "app2ext_usr_get_image_path";
  17 const std::string& init_sym_name = "app2ext_init";
  18 const std::string& deinit_sym_name = "app2ext_deinit";
  19 const std::string& LIBNAME = "/usr/lib/libapp2ext.so.0";
  20
  21 }
  22
  23 namespace common_installer {
  24
  25 App2ExtDynamicService::App2ExtDynamicService()
  26     : dl_handle(NULL) {
  27   dl_handle = dlopen(LIBNAME.c_str(), RTLD_LAZY);
  28   if (!dl_handle) {
  29     LOG(WARNING) << "Cannot open handle: " << dlerror();
  30     return;
  31   }
  32 }
  33
  34 App2ExtDynamicService::~App2ExtDynamicService() {
  35   if (!app2ext_handler && dl_handle)
  36     dlclose(dl_handle);
  37 }
  38
  39 bool App2ExtDynamicService::EnableExternalPkgForUsr(const char* appname,
  40     uid_t uid) {
  41   int ret = CallMethod<int>(-1, enable_pkg_sym_name.c_str(), appname, uid);
  42   if (ret) {
  43     LOG(ERROR) << enable_pkg_sym_name << " failed with error code: "
  44                << ret;
  45   }
  46   return ret == 0;
  47 }
  48
  49 bool App2ExtDynamicService::DisableExternalPkgForUsr(const char* appname,
  50     uid_t uid) {
  51   int ret = CallMethod<int>(-1, disable_pkg_sym_name.c_str(), appname, uid);
  52   if (ret) {
  53     LOG(ERROR) << disable_pkg_sym_name << " failed with error code: "
  54                << ret;
  55   }
  56   return ret == 0;
  57 }
  58
  59 std::string App2ExtDynamicService::GetExternalImagePath(const char* pkgid,
  60     uid_t uid) {
  61   char* image_path = CallMethod<char*>(nullptr, get_image_path_sym_name.c_str(),
  62       pkgid, uid);
  63   std::string result;
  64   if (image_path) {
  65     result = std::string(image_path);
  66     free(image_path);
  67   }
  68   return result;
  69 }
  70
  71 app2ext_handle* App2ExtDynamicService::InitLibrary() {
  72   return CallMethod<app2ext_handle*>(NULL, init_sym_name.c_str(),
  73                                      APP2EXT_SD_CARD);
  74 }
  75
  76 void App2ExtDynamicService::DeinitLibrary(app2ext_handle* handle) {
  77   if (handle)
  78     CallMethod<int>(-1, deinit_sym_name.c_str(), handle);
  79 }
  80
  81 bool App2ExtDynamicService::ProperlyLoaded() {
  82   return dl_handle != NULL;
  83 }
  84
  85 std::shared_ptr<app2ext_handle> App2ExtDynamicService::getInterfaceHandle() {
  86   if (!app2ext_handler && ProperlyLoaded()) {
  87     app2ext_handler = std::shared_ptr<app2ext_handle>(InitLibrary(),
  88         std::bind(&App2ExtDynamicService::DeinitLibrary,
  89                   this, std::placeholders::_1));
  90     if (!app2ext_handler)
  91         LOG(ERROR) "app2ext_init() failed.";
  92   }
  93   return app2ext_handler;
  94 }
  95
  96 }  // namespace common_installer