remoting/host/it2me/it2me_native_messaging_host_main.cc

   1 // Copyright 2013 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 "remoting/host/it2me/it2me_native_messaging_host_main.h"
   6
   7 #include "base/at_exit.h"
   8 #include "base/command_line.h"
   9 #include "base/i18n/icu_util.h"
  10 #include "base/message_loop/message_loop.h"
  11 #include "base/run_loop.h"
  12 #include "media/base/media.h"
  13 #include "net/socket/ssl_server_socket.h"
  14 #include "remoting/base/breakpad.h"
  15 #include "remoting/base/resources.h"
  16 #include "remoting/host/host_exit_codes.h"
  17 #include "remoting/host/it2me/it2me_native_messaging_host.h"
  18 #include "remoting/host/logging.h"
  19 #include "remoting/host/usage_stats_consent.h"
  20
  21 #if defined(OS_LINUX)
  22 #include <gtk/gtk.h>
  23 #endif  // defined(OS_LINUX)
  24
  25 #if defined(OS_MACOSX)
  26 #include "base/mac/scoped_nsautorelease_pool.h"
  27 #endif  // defined(OS_MACOSX)
  28
  29 #if defined(OS_WIN)
  30 #include <commctrl.h>
  31 #endif  // defined(OS_WIN)
  32
  33 namespace remoting {
  34
  35 // Creates a It2MeNativeMessagingHost instance, attaches it to stdin/stdout and
  36 // runs the message loop until It2MeNativeMessagingHost signals shutdown.
  37 int StartIt2MeNativeMessagingHost() {
  38 #if defined(OS_MACOSX)
  39   // Needed so we don't leak objects when threads are created.
  40   base::mac::ScopedNSAutoreleasePool pool;
  41 #endif  // defined(OS_MACOSX)
  42
  43 #if defined(REMOTING_ENABLE_BREAKPAD)
  44   // Initialize Breakpad as early as possible. On Mac the command-line needs to
  45   // be initialized first, so that the preference for crash-reporting can be
  46   // looked up in the config file.
  47   if (IsUsageStatsAllowed()) {
  48     InitializeCrashReporting();
  49   }
  50 #endif  // defined(REMOTING_ENABLE_BREAKPAD)
  51
  52 #if defined(OS_WIN)
  53   // Register and initialize common controls.
  54   INITCOMMONCONTROLSEX info;
  55   info.dwSize = sizeof(info);
  56   info.dwICC = ICC_STANDARD_CLASSES;
  57   InitCommonControlsEx(&info);
  58 #endif  // defined(OS_WIN)
  59
  60   // Required to find the ICU data file, used by some file_util routines.
  61   base::i18n::InitializeICU();
  62
  63   remoting::LoadResources("");
  64
  65   // Cannot use TOOLKIT_GTK because it is not defined when aura is enabled.
  66 #if defined(OS_LINUX)
  67   // Required for any calls into GTK functions, such as the Disconnect and
  68   // Continue windows. Calling with NULL arguments because we don't have
  69   // any command line arguments for gtk to consume.
  70   gtk_init(NULL, NULL);
  71 #endif  // OS_LINUX
  72
  73   // Enable support for SSL server sockets, which must be done while still
  74   // single-threaded.
  75   net::EnableSSLServerSockets();
  76
  77   // Ensures runtime specific CPU features are initialized.
  78   media::InitializeCPUSpecificMediaFeatures();
  79
  80 #if defined(OS_WIN)
  81   // GetStdHandle() returns pseudo-handles for stdin and stdout even if
  82   // the hosting executable specifies "Windows" subsystem. However the returned
  83   // handles are invalid in that case unless standard input and output are
  84   // redirected to a pipe or file.
  85   base::File read_file(GetStdHandle(STD_INPUT_HANDLE));
  86   base::File write_file(GetStdHandle(STD_OUTPUT_HANDLE));
  87
  88   // After the native messaging channel starts the native messaging reader
  89   // will keep doing blocking read operations on the input named pipe.
  90   // If any other thread tries to perform any operation on STDIN, it will also
  91   // block because the input named pipe is synchronous (non-overlapped).
  92   // It is pretty common for a DLL to query the device info (GetFileType) of
  93   // the STD* handles at startup. So any LoadLibrary request can potentially
  94   // be blocked. To prevent that from happening we close STDIN and STDOUT
  95   // handles as soon as we retrieve the corresponding file handles.
  96   SetStdHandle(STD_INPUT_HANDLE, NULL);
  97   SetStdHandle(STD_OUTPUT_HANDLE, NULL);
  98 #elif defined(OS_POSIX)
  99   // The files are automatically closed.
 100   base::File read_file(STDIN_FILENO);
 101   base::File write_file(STDOUT_FILENO);
 102 #else
 103 #error Not implemented.
 104 #endif
 105
 106   base::MessageLoopForUI message_loop;
 107   base::RunLoop run_loop;
 108
 109   scoped_refptr<AutoThreadTaskRunner> task_runner =
 110       new remoting::AutoThreadTaskRunner(message_loop.message_loop_proxy(),
 111                                          run_loop.QuitClosure());
 112
 113   scoped_ptr<It2MeHostFactory> factory(new It2MeHostFactory());
 114
 115   // Set up the native messaging channel.
 116   scoped_ptr<NativeMessagingChannel> channel(
 117       new NativeMessagingChannel(read_file.Pass(), write_file.Pass()));
 118
 119   scoped_ptr<It2MeNativeMessagingHost> host(
 120       new It2MeNativeMessagingHost(
 121           task_runner, channel.Pass(), factory.Pass()));
 122   host->Start(run_loop.QuitClosure());
 123
 124   // Run the loop until channel is alive.
 125   run_loop.Run();
 126
 127   return kSuccessExitCode;
 128 }
 129
 130 int It2MeNativeMessagingHostMain(int argc, char** argv) {
 131   // This object instance is required by Chrome code (such as MessageLoop).
 132   base::AtExitManager exit_manager;
 133
 134   base::CommandLine::Init(argc, argv);
 135   remoting::InitHostLogging();
 136
 137   return StartIt2MeNativeMessagingHost();
 138 }
 139
 140 }  // namespace remoting