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 #include <X11/Xlib.h>
  24 #endif  // defined(OS_LINUX)
  25
  26 #if defined(OS_MACOSX)
  27 #include "base/mac/scoped_nsautorelease_pool.h"
  28 #endif  // defined(OS_MACOSX)
  29
  30 #if defined(OS_WIN)
  31 #include <commctrl.h>
  32 #endif  // defined(OS_WIN)
  33
  34 namespace remoting {
  35
  36 // Creates a It2MeNativeMessagingHost instance, attaches it to stdin/stdout and
  37 // runs the message loop until It2MeNativeMessagingHost signals shutdown.
  38 int StartIt2MeNativeMessagingHost() {
  39 #if defined(OS_MACOSX)
  40   // Needed so we don't leak objects when threads are created.
  41   base::mac::ScopedNSAutoreleasePool pool;
  42 #endif  // defined(OS_MACOSX)
  43
  44 #if defined(REMOTING_ENABLE_BREAKPAD)
  45   // Initialize Breakpad as early as possible. On Mac the command-line needs to
  46   // be initialized first, so that the preference for crash-reporting can be
  47   // looked up in the config file.
  48   if (IsUsageStatsAllowed()) {
  49     InitializeCrashReporting();
  50   }
  51 #endif  // defined(REMOTING_ENABLE_BREAKPAD)
  52
  53 #if defined(OS_WIN)
  54   // Register and initialize common controls.
  55   INITCOMMONCONTROLSEX info;
  56   info.dwSize = sizeof(info);
  57   info.dwICC = ICC_STANDARD_CLASSES;
  58   InitCommonControlsEx(&info);
  59 #endif  // defined(OS_WIN)
  60
  61   // Required to find the ICU data file, used by some file_util routines.
  62   base::i18n::InitializeICU();
  63
  64   remoting::LoadResources("");
  65
  66   // Cannot use TOOLKIT_GTK because it is not defined when aura is enabled.
  67 #if defined(OS_LINUX)
  68   // Required in order for us to run multiple X11 threads.
  69   XInitThreads();
  70
  71   // Required for any calls into GTK functions, such as the Disconnect and
  72   // Continue windows. Calling with NULL arguments because we don't have
  73   // any command line arguments for gtk to consume.
  74   gtk_init(NULL, NULL);
  75 #endif  // OS_LINUX
  76
  77   // Enable support for SSL server sockets, which must be done while still
  78   // single-threaded.
  79   net::EnableSSLServerSockets();
  80
  81   // Ensures runtime specific CPU features are initialized.
  82   media::InitializeCPUSpecificMediaFeatures();
  83
  84 #if defined(OS_WIN)
  85   // GetStdHandle() returns pseudo-handles for stdin and stdout even if
  86   // the hosting executable specifies "Windows" subsystem. However the returned
  87   // handles are invalid in that case unless standard input and output are
  88   // redirected to a pipe or file.
  89   base::File read_file(GetStdHandle(STD_INPUT_HANDLE));
  90   base::File write_file(GetStdHandle(STD_OUTPUT_HANDLE));
  91
  92   // After the native messaging channel starts the native messaging reader
  93   // will keep doing blocking read operations on the input named pipe.
  94   // If any other thread tries to perform any operation on STDIN, it will also
  95   // block because the input named pipe is synchronous (non-overlapped).
  96   // It is pretty common for a DLL to query the device info (GetFileType) of
  97   // the STD* handles at startup. So any LoadLibrary request can potentially
  98   // be blocked. To prevent that from happening we close STDIN and STDOUT
  99   // handles as soon as we retrieve the corresponding file handles.
 100   SetStdHandle(STD_INPUT_HANDLE, NULL);
 101   SetStdHandle(STD_OUTPUT_HANDLE, NULL);
 102 #elif defined(OS_POSIX)
 103   // The files are automatically closed.
 104   base::File read_file(STDIN_FILENO);
 105   base::File write_file(STDOUT_FILENO);
 106 #else
 107 #error Not implemented.
 108 #endif
 109
 110   base::MessageLoopForUI message_loop;
 111   base::RunLoop run_loop;
 112
 113   scoped_refptr<AutoThreadTaskRunner> task_runner =
 114       new remoting::AutoThreadTaskRunner(message_loop.message_loop_proxy(),
 115                                          run_loop.QuitClosure());
 116
 117   scoped_ptr<It2MeHostFactory> factory(new It2MeHostFactory());
 118
 119   // Set up the native messaging channel.
 120   scoped_ptr<NativeMessagingChannel> channel(
 121       new NativeMessagingChannel(read_file.Pass(), write_file.Pass()));
 122
 123   scoped_ptr<It2MeNativeMessagingHost> host(
 124       new It2MeNativeMessagingHost(
 125           task_runner, channel.Pass(), factory.Pass()));
 126   host->Start(run_loop.QuitClosure());
 127
 128   // Run the loop until channel is alive.
 129   run_loop.Run();
 130
 131   return kSuccessExitCode;
 132 }
 133
 134 int It2MeNativeMessagingHostMain(int argc, char** argv) {
 135   // This object instance is required by Chrome code (such as MessageLoop).
 136   base::AtExitManager exit_manager;
 137
 138   base::CommandLine::Init(argc, argv);
 139   remoting::InitHostLogging();
 140
 141   return StartIt2MeNativeMessagingHost();
 142 }
 143
 144 }  // namespace remoting