chrome/renderer/chrome_ppapi_interfaces.cc

   1 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "chrome/renderer/chrome_ppapi_interfaces.h"
   6
   7 #include "base/command_line.h"
   8 #include "base/logging.h"
   9 #include "base/rand_util_c.h"
  10 #include "base/utf_string_conversions.h"
  11 #include "chrome/common/render_messages.h"
  12 #include "chrome/renderer/chrome_ppb_pdf_impl.h"
  13 #include "content/public/common/content_switches.h"
  14 #include "content/public/renderer/render_thread.h"
  15 #include "ppapi/c/private/ppb_nacl_private.h"
  16 #include "ppapi/c/private/ppb_pdf.h"
  17 #include "webkit/plugins/ppapi/ppapi_interface_factory.h"
  18
  19 #if !defined(DISABLE_NACL)
  20 #include "native_client/src/shared/imc/nacl_imc.h"
  21 #include "ppapi/native_client/src/trusted/plugin/nacl_entry_points.h"
  22 #endif
  23
  24 using content::RenderThread;
  25
  26 namespace chrome {
  27
  28 #if !defined(DISABLE_NACL)
  29 // Launch NaCl's sel_ldr process.
  30 bool LaunchSelLdr(const char* alleged_url, int socket_count,
  31                   void* imc_handles, void* nacl_process_handle,
  32                   int* nacl_process_id) {
  33   std::vector<nacl::FileDescriptor> sockets;
  34   base::ProcessHandle nacl_process;
  35   if (!RenderThread::Get()->Send(
  36       new ChromeViewHostMsg_LaunchNaCl(
  37           ASCIIToWide(alleged_url),
  38           socket_count,
  39           &sockets,
  40           &nacl_process,
  41           reinterpret_cast<base::ProcessId*>(nacl_process_id)))) {
  42     return false;
  43   }
  44   CHECK(static_cast<int>(sockets.size()) == socket_count);
  45   for (int i = 0; i < socket_count; i++) {
  46     static_cast<nacl::Handle*>(imc_handles)[i] =
  47         nacl::ToNativeHandle(sockets[i]);
  48   }
  49   *static_cast<nacl::Handle*>(nacl_process_handle) = nacl_process;
  50   return true;
  51 }
  52
  53 int UrandomFD(void) {
  54 #if defined(OS_POSIX)
  55   return GetUrandomFD();
  56 #else
  57   return 0;
  58 #endif
  59 }
  60
  61 bool Are3DInterfacesDisabled() {
  62   return CommandLine::ForCurrentProcess()->HasSwitch(switches::kDisable3DAPIs);
  63 }
  64
  65 const PPB_NaCl_Private ppb_nacl = {
  66   &LaunchSelLdr,
  67   &UrandomFD,
  68   &Are3DInterfacesDisabled,
  69 };
  70
  71 class PPB_NaCl_Impl {
  72  public:
  73   // Returns a pointer to the interface implementing PPB_NaCl_Private that is
  74   // exposed to the plugin.
  75   static const PPB_NaCl_Private* GetInterface() {
  76     return &ppb_nacl;
  77   }
  78 };
  79 #endif  // DISABLE_NACL
  80
  81 const void* ChromePPAPIInterfaceFactory(const std::string& interface_name) {
  82 #if !defined(DISABLE_NACL)
  83   if (interface_name == PPB_NACL_PRIVATE_INTERFACE)
  84     return chrome::PPB_NaCl_Impl::GetInterface();
  85 #endif  // DISABLE_NACL
  86   if (interface_name == PPB_PDF_INTERFACE)
  87     return chrome::PPB_PDF_Impl::GetInterface();
  88   return NULL;
  89 }
  90
  91 }  // namespace chrome