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// Copyright 2016 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "remoting/host/security_key/remote_security_key_main.h"
#include <memory>
#include <string>
#include <utility>
#include "base/at_exit.h"
#include "base/command_line.h"
#include "base/message_loop/message_pump_type.h"
#include "base/run_loop.h"
#include "base/task/single_thread_task_executor.h"
#include "base/task/single_thread_task_runner.h"
#include "build/build_config.h"
#include "mojo/core/embedder/embedder.h"
#include "mojo/core/embedder/scoped_ipc_support.h"
#include "remoting/base/logging.h"
#include "remoting/host/base/host_exit_codes.h"
#include "remoting/host/chromoting_host_services_client.h"
#include "remoting/host/security_key/security_key_ipc_client.h"
#include "remoting/host/security_key/security_key_message_handler.h"
#include "remoting/host/usage_stats_consent.h"
#if BUILDFLAG(IS_LINUX)
#include "remoting/base/crash/crash_reporting_crashpad.h"
#endif // BUILDFLAG(IS_LINUX)
#if BUILDFLAG(IS_WIN)
#include <windows.h>
#include "remoting/base/crash/crash_reporting_breakpad.h"
#include "remoting/host/win/acl_util.h"
#endif // BUILDFLAG(IS_WIN)
namespace remoting {
int StartRemoteSecurityKey() {
if (!ChromotingHostServicesClient::Initialize()) {
return kInitializationFailed;
}
#if BUILDFLAG(IS_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 message handler starts, the security key message 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 BUILDFLAG(IS_POSIX)
// The files are automatically closed.
base::File read_file(STDIN_FILENO);
base::File write_file(STDOUT_FILENO);
#else
#error Not implemented.
#endif
mojo::core::Init();
mojo::core::ScopedIPCSupport ipc_support(
base::SingleThreadTaskRunner::GetCurrentDefault(),
mojo::core::ScopedIPCSupport::ShutdownPolicy::FAST);
base::RunLoop run_loop;
std::unique_ptr<SecurityKeyIpcClient> ipc_client(new SecurityKeyIpcClient());
SecurityKeyMessageHandler message_handler;
message_handler.Start(std::move(read_file), std::move(write_file),
std::move(ipc_client), run_loop.QuitClosure());
run_loop.Run();
return kSuccessExitCode;
}
int RemoteSecurityKeyMain(int argc, char** argv) {
// This object instance is required by Chrome classes (such as MessageLoop).
base::AtExitManager exit_manager;
base::SingleThreadTaskExecutor io_task_executor(base::MessagePumpType::IO);
base::CommandLine::Init(argc, argv);
remoting::InitHostLogging();
#if defined(REMOTING_ENABLE_CRASH_REPORTING)
if (IsUsageStatsAllowed()) {
#if BUILDFLAG(IS_LINUX)
InitializeCrashpadReporting();
#elif BUILDFLAG(IS_WIN)
InitializeBreakpadReporting();
#endif // BUILDFLAG(IS_LINUX)
}
#endif // defined(REMOTING_ENABLE_CRASH_REPORTING)
return StartRemoteSecurityKey();
}
} // namespace remoting
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