Implement DaemonController::GetVersion() method on Linux

remoting/host/remoting_me2me_host.cc

 // Copyright (c) 2012 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.
 //
 // This file implements a standalone host process for Me2Me.
 
 #include <string>
 
 #include "base/at_exit.h"
 #include "base/bind.h"
 #include "base/callback.h"
 #include "base/command_line.h"
 #include "base/file_path.h"
 #include "base/file_util.h"
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop.h"
 #include "base/scoped_native_library.h"
 #include "base/string_util.h"
+#include "base/stringize_macros.h"
 #include "base/synchronization/waitable_event.h"
 #include "base/threading/thread.h"
 #include "base/utf_string_conversions.h"
 #include "base/win/windows_version.h"
 #include "build/build_config.h"
 #include "crypto/nss_util.h"
 #include "ipc/ipc_channel.h"
 #include "ipc/ipc_channel_proxy.h"
 #include "net/base/network_change_notifier.h"
 #include "net/socket/ssl_server_socket.h"
@@ skipping 44 matching lines @@
 #endif  // defined(TOOLKIT_GTK)
 
 namespace {
 
 // This is used for tagging system event logs.
 const char kApplicationName[] = "chromoting";
 
 // The command line switch specifying the name of the daemon IPC endpoint.
 const char kDaemonIpcSwitchName[] = "daemon-pipe";
 
+// The command line switch used to get version of the daemon.
+const char kVersionSwitchName[] = "version";
+
 const char kUnofficialOAuth2ClientId[] =
     "440925447803-2pi3v45bff6tp1rde2f7q6lgbor3o5uj.apps.googleusercontent.com";
 const char kUnofficialOAuth2ClientSecret[] = "W2ieEsG-R1gIA4MMurGrgMc_";
 
 const char kOfficialOAuth2ClientId[] =
     "440925447803-avn2sj1kc099s0r7v62je5s339mu0am1.apps.googleusercontent.com";
 const char kOfficialOAuth2ClientSecret[] = "Bgur6DFiOMM1h8x-AQpuTQlK";
 
 void QuitMessageLoop(MessageLoop* message_loop) {
   message_loop->PostTask(FROM_HERE, MessageLoop::QuitClosure());
@@ skipping 597 matching lines @@
   // Needed so we don't leak objects when threads are created.
   base::mac::ScopedNSAutoreleasePool pool;
 #endif
 
   CommandLine::Init(argc, argv);
 
   // This object instance is required by Chrome code (for example,
   // LazyInstance, MessageLoop).
   base::AtExitManager exit_manager;
 
+  if (CommandLine::ForCurrentProcess()->HasSwitch(kVersionSwitchName)) {
+    printf("%s\n", STRINGIZE(VERSION));
+    return 0;
+  }
+
   // Initialize logging with an appropriate log-file location, and default to
   // log to that on Windows, or to standard error output otherwise.
   FilePath debug_log = remoting::GetConfigDir().
       Append(FILE_PATH_LITERAL("debug.log"));
   InitLogging(debug_log.value().c_str(),
 #if defined(OS_WIN)
               logging::LOG_ONLY_TO_FILE,
 #else
               logging::LOG_ONLY_TO_SYSTEM_DEBUG_LOG,
 #endif
@@ skipping 68 matching lines @@
             user32.GetFunctionPointer("SetProcessDPIAware"));
     set_process_dpi_aware();
   }
 
   // CommandLine::Init() ignores the passed |argc| and |argv| on Windows getting
   // the command line from GetCommandLineW(), so we can safely pass NULL here.
   return main(0, NULL);
 }
 
 #endif  // defined(OS_WIN)