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 "net/socket/ssl_server_socket.h"
  13 #include "remoting/base/breakpad.h"
  14 #include "remoting/host/chromoting_host_context.h"
  15 #include "remoting/host/host_exit_codes.h"
  16 #include "remoting/host/it2me/it2me_native_messaging_host.h"
  17 #include "remoting/host/logging.h"
  18 #include "remoting/host/native_messaging/native_messaging_pipe.h"
  19 #include "remoting/host/native_messaging/pipe_messaging_channel.h"
  20 #include "remoting/host/resources.h"
  21 #include "remoting/host/usage_stats_consent.h"
  22
  23 #if defined(OS_LINUX)
  24 #include <gtk/gtk.h>
  25 #include <X11/Xlib.h>
  26 #endif  // defined(OS_LINUX)
  27
  28 #if defined(OS_MACOSX)
  29 #include "base/mac/scoped_nsautorelease_pool.h"
  30 #endif  // defined(OS_MACOSX)
  31
  32 #if defined(OS_WIN)
  33 #include <commctrl.h>
  34 #endif  // defined(OS_WIN)
  35
  36 namespace remoting {
  37
  38 // Creates a It2MeNativeMessagingHost instance, attaches it to stdin/stdout and
  39 // runs the message loop until It2MeNativeMessagingHost signals shutdown.
  40 int StartIt2MeNativeMessagingHost() {
  41 #if defined(OS_MACOSX)
  42   // Needed so we don't leak objects when threads are created.
  43   base::mac::ScopedNSAutoreleasePool pool;
  44 #endif  // defined(OS_MACOSX)
  45
  46 #if defined(REMOTING_ENABLE_BREAKPAD)
  47   // Initialize Breakpad as early as possible. On Mac the command-line needs to
  48   // be initialized first, so that the preference for crash-reporting can be
  49   // looked up in the config file.
  50   if (IsUsageStatsAllowed()) {
  51     InitializeCrashReporting();
  52   }
  53 #endif  // defined(REMOTING_ENABLE_BREAKPAD)
  54
  55 #if defined(OS_WIN)
  56   // Register and initialize common controls.
  57   INITCOMMONCONTROLSEX info;
  58   info.dwSize = sizeof(info);
  59   info.dwICC = ICC_STANDARD_CLASSES;
  60   InitCommonControlsEx(&info);
  61 #endif  // defined(OS_WIN)
  62
  63   // Required to find the ICU data file, used by some file_util routines.
  64   base::i18n::InitializeICU();
  65
  66   remoting::LoadResources("");
  67
  68   // Cannot use TOOLKIT_GTK because it is not defined when aura is enabled.
  69 #if defined(OS_LINUX)
  70   // Required in order for us to run multiple X11 threads.
  71   XInitThreads();
  72
  73   // Required for any calls into GTK functions, such as the Disconnect and
  74   // Continue windows. Calling with nullptr arguments because we don't have
  75   // any command line arguments for gtk to consume.
  76   gtk_init(nullptr, nullptr);
  77 #endif  // OS_LINUX
  78
  79   // Enable support for SSL server sockets, which must be done while still
  80   // single-threaded.
  81   net::EnableSSLServerSockets();
  82
  83 #if defined(OS_WIN)
  84   // GetStdHandle() returns pseudo-handles for stdin and stdout even if
  85   // the hosting executable specifies "Windows" subsystem. However the returned
  86   // handles are invalid in that case unless standard input and output are
  87   // redirected to a pipe or file.
  88   base::File read_file(GetStdHandle(STD_INPUT_HANDLE));
  89   base::File write_file(GetStdHandle(STD_OUTPUT_HANDLE));
  90
  91   // After the native messaging channel starts the native messaging reader
  92   // will keep doing blocking read operations on the input named pipe.
  93   // If any other thread tries to perform any operation on STDIN, it will also
  94   // block because the input named pipe is synchronous (non-overlapped).
  95   // It is pretty common for a DLL to query the device info (GetFileType) of
  96   // the STD* handles at startup. So any LoadLibrary request can potentially
  97   // be blocked. To prevent that from happening we close STDIN and STDOUT
  98   // handles as soon as we retrieve the corresponding file handles.
  99   SetStdHandle(STD_INPUT_HANDLE, nullptr);
 100   SetStdHandle(STD_OUTPUT_HANDLE, nullptr);
 101 #elif defined(OS_POSIX)
 102   // The files are automatically closed.
 103   base::File read_file(STDIN_FILENO);
 104   base::File write_file(STDOUT_FILENO);
 105 #else
 106 #error Not implemented.
 107 #endif
 108
 109   base::MessageLoopForUI message_loop;
 110   base::RunLoop run_loop;
 111
 112   scoped_ptr<It2MeHostFactory> factory(new It2MeHostFactory());
 113
 114   scoped_ptr<NativeMessagingPipe> native_messaging_pipe(
 115       new NativeMessagingPipe());
 116
 117   // Set up the native messaging channel.
 118   scoped_ptr<extensions::NativeMessagingChannel> channel(
 119       new PipeMessagingChannel(read_file.Pass(), write_file.Pass()));
 120
 121   scoped_ptr<ChromotingHostContext> context =
 122       ChromotingHostContext::Create(new remoting::AutoThreadTaskRunner(
 123           message_loop.task_runner(), run_loop.QuitClosure()));
 124   scoped_ptr<extensions::NativeMessageHost> host(
 125       new It2MeNativeMessagingHost(context.Pass(), factory.Pass()));
 126
 127   host->Start(native_messaging_pipe.get());
 128
 129   native_messaging_pipe->Start(host.Pass(), channel.Pass());
 130
 131   // Run the loop until channel is alive.
 132   run_loop.Run();
 133
 134   return kSuccessExitCode;
 135 }
 136
 137 int It2MeNativeMessagingHostMain(int argc, char** argv) {
 138   // This object instance is required by Chrome code (such as MessageLoop).
 139   base::AtExitManager exit_manager;
 140
 141   base::CommandLine::Init(argc, argv);
 142   remoting::InitHostLogging();
 143
 144   return StartIt2MeNativeMessagingHost();
 145 }
 146
 147 }  // namespace remoting