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// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "remoting/host/it2me/it2me_native_messaging_host_main.h"
#include "base/at_exit.h"
#include "base/command_line.h"
#include "base/i18n/icu_util.h"
#include "base/message_loop/message_loop.h"
#include "base/run_loop.h"
#include "net/socket/ssl_server_socket.h"
#include "remoting/base/breakpad.h"
#include "remoting/base/resources.h"
#include "remoting/host/chromoting_host_context.h"
#include "remoting/host/host_exit_codes.h"
#include "remoting/host/it2me/it2me_native_messaging_host.h"
#include "remoting/host/logging.h"
#include "remoting/host/native_messaging/native_messaging_pipe.h"
#include "remoting/host/native_messaging/pipe_messaging_channel.h"
#include "remoting/host/usage_stats_consent.h"
#if defined(OS_LINUX)
#include <gtk/gtk.h>
#include <X11/Xlib.h>
#endif // defined(OS_LINUX)
#if defined(OS_MACOSX)
#include "base/mac/scoped_nsautorelease_pool.h"
#endif // defined(OS_MACOSX)
#if defined(OS_WIN)
#include <commctrl.h>
#endif // defined(OS_WIN)
namespace remoting {
// Creates a It2MeNativeMessagingHost instance, attaches it to stdin/stdout and
// runs the message loop until It2MeNativeMessagingHost signals shutdown.
int StartIt2MeNativeMessagingHost() {
#if defined(OS_MACOSX)
// Needed so we don't leak objects when threads are created.
base::mac::ScopedNSAutoreleasePool pool;
#endif // defined(OS_MACOSX)
#if defined(REMOTING_ENABLE_BREAKPAD)
// Initialize Breakpad as early as possible. On Mac the command-line needs to
// be initialized first, so that the preference for crash-reporting can be
// looked up in the config file.
if (IsUsageStatsAllowed()) {
InitializeCrashReporting();
}
#endif // defined(REMOTING_ENABLE_BREAKPAD)
#if defined(OS_WIN)
// Register and initialize common controls.
INITCOMMONCONTROLSEX info;
info.dwSize = sizeof(info);
info.dwICC = ICC_STANDARD_CLASSES;
InitCommonControlsEx(&info);
#endif // defined(OS_WIN)
// Required to find the ICU data file, used by some file_util routines.
base::i18n::InitializeICU();
remoting::LoadResources("");
// Cannot use TOOLKIT_GTK because it is not defined when aura is enabled.
#if defined(OS_LINUX)
// Required in order for us to run multiple X11 threads.
XInitThreads();
// Required for any calls into GTK functions, such as the Disconnect and
// Continue windows. Calling with nullptr arguments because we don't have
// any command line arguments for gtk to consume.
gtk_init(nullptr, nullptr);
#endif // OS_LINUX
// Enable support for SSL server sockets, which must be done while still
// single-threaded.
net::EnableSSLServerSockets();
#if defined(OS_WIN)
// GetStdHandle() returns pseudo-handles for stdin and stdout even if
// the hosting executable specifies "Windows" subsystem. However the returned
// handles are invalid in that case unless standard input and output are
// redirected to a pipe or file.
base::File read_file(GetStdHandle(STD_INPUT_HANDLE));
base::File write_file(GetStdHandle(STD_OUTPUT_HANDLE));
// After the native messaging channel starts the native messaging reader
// will keep doing blocking read operations on the input named pipe.
// If any other thread tries to perform any operation on STDIN, it will also
// block because the input named pipe is synchronous (non-overlapped).
// It is pretty common for a DLL to query the device info (GetFileType) of
// the STD* handles at startup. So any LoadLibrary request can potentially
// be blocked. To prevent that from happening we close STDIN and STDOUT
// handles as soon as we retrieve the corresponding file handles.
SetStdHandle(STD_INPUT_HANDLE, nullptr);
SetStdHandle(STD_OUTPUT_HANDLE, nullptr);
#elif defined(OS_POSIX)
// The files are automatically closed.
base::File read_file(STDIN_FILENO);
base::File write_file(STDOUT_FILENO);
#else
#error Not implemented.
#endif
base::MessageLoopForUI message_loop;
base::RunLoop run_loop;
scoped_ptr<It2MeHostFactory> factory(new It2MeHostFactory());
scoped_ptr<NativeMessagingPipe> native_messaging_pipe(
new NativeMessagingPipe());
// Set up the native messaging channel.
scoped_ptr<extensions::NativeMessagingChannel> channel(
new PipeMessagingChannel(read_file.Pass(), write_file.Pass()));
scoped_ptr<ChromotingHostContext> context =
ChromotingHostContext::Create(new remoting::AutoThreadTaskRunner(
message_loop.message_loop_proxy(), run_loop.QuitClosure()));
scoped_ptr<extensions::NativeMessageHost> host(
new It2MeNativeMessagingHost(context.Pass(), factory.Pass()));
host->Start(native_messaging_pipe.get());
native_messaging_pipe->Start(host.Pass(), channel.Pass());
// Run the loop until channel is alive.
run_loop.Run();
return kSuccessExitCode;
}
int It2MeNativeMessagingHostMain(int argc, char** argv) {
// This object instance is required by Chrome code (such as MessageLoop).
base::AtExitManager exit_manager;
base::CommandLine::Init(argc, argv);
remoting::InitHostLogging();
return StartIt2MeNativeMessagingHost();
}
} // namespace remoting
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