components/nacl/renderer/plugin/module_ppapi.cc

   1 /*
   2  * Copyright (c) 2012 The Chromium Authors. All rights reserved.
   3  * Use of this source code is governed by a BSD-style license that can be
   4  * found in the LICENSE file.
   5  */
   6
   7 #include "components/nacl/renderer/plugin/module_ppapi.h"
   8 #include "components/nacl/renderer/plugin/plugin.h"
   9 #include "components/nacl/renderer/plugin/utility.h"
  10 #include "native_client/src/shared/imc/nacl_imc_c.h"
  11 #include "native_client/src/shared/platform/nacl_secure_random.h"
  12 #include "native_client/src/shared/platform/nacl_time.h"
  13 #include "native_client/src/trusted/desc/nrd_all_modules.h"
  14
  15 namespace plugin {
  16
  17 ModulePpapi::ModulePpapi() : pp::Module(),
  18                              init_was_successful_(false),
  19                              private_interface_(NULL) {
  20   MODULE_PRINTF(("ModulePpapi::ModulePpapi (this=%p)\n",
  21                  static_cast<void*>(this)));
  22 }
  23
  24 ModulePpapi::~ModulePpapi() {
  25   if (init_was_successful_) {
  26     NaClSrpcModuleFini();
  27     NaClNrdAllModulesFini();
  28   }
  29   MODULE_PRINTF(("ModulePpapi::~ModulePpapi (this=%p)\n",
  30                  static_cast<void*>(this)));
  31 }
  32
  33 bool ModulePpapi::Init() {
  34   // Ask the browser for an interface which provides missing functions
  35   private_interface_ = reinterpret_cast<const PPB_NaCl_Private*>(
  36       GetBrowserInterface(PPB_NACL_PRIVATE_INTERFACE));
  37
  38   if (NULL == private_interface_) {
  39     MODULE_PRINTF(("ModulePpapi::Init failed: "
  40                    "GetBrowserInterface returned NULL\n"));
  41     return false;
  42   }
  43   SetNaClInterface(private_interface_);
  44
  45 #if NACL_LINUX || NACL_OSX
  46   // Note that currently we do not need random numbers inside the
  47   // NaCl trusted plugin on Unix, but NaClSecureRngModuleInit() is
  48   // strict and will raise a fatal error unless we provide it with a
  49   // /dev/urandom FD beforehand.
  50   NaClSecureRngModuleSetUrandomFd(dup(private_interface_->UrandomFD()));
  51 #endif
  52
  53   // In the plugin, we don't need high resolution time of day.
  54   NaClAllowLowResolutionTimeOfDay();
  55   NaClNrdAllModulesInit();
  56   NaClSrpcModuleInit();
  57
  58 #if NACL_WINDOWS
  59   NaClSetBrokerDuplicateHandleFunc(private_interface_->BrokerDuplicateHandle);
  60 #endif
  61
  62   init_was_successful_ = true;
  63   return true;
  64 }
  65
  66 pp::Instance* ModulePpapi::CreateInstance(PP_Instance pp_instance) {
  67   MODULE_PRINTF(("ModulePpapi::CreateInstance (pp_instance=%" NACL_PRId32
  68                  ")\n",
  69                  pp_instance));
  70   Plugin* plugin = new Plugin(pp_instance);
  71   MODULE_PRINTF(("ModulePpapi::CreateInstance (return %p)\n",
  72                  static_cast<void* >(plugin)));
  73   return plugin;
  74 }
  75
  76 }  // namespace plugin
  77
  78
  79 namespace pp {
  80
  81 Module* CreateModule() {
  82   MODULE_PRINTF(("CreateModule ()\n"));
  83   return new plugin::ModulePpapi();
  84 }
  85
  86 }  // namespace pp