Add forwarder2

tools/android/forwarder2/device_forwarder_main.cc

Index: tools/android/forwarder2/device_forwarder_main.cc
diff --git a/tools/android/forwarder2/device_forwarder_main.cc b/tools/android/forwarder2/device_forwarder_main.cc
new file mode 100644
index 0000000000000000000000000000000000000000..18c2ee4b282b9b94c2eea3254e13715aabd468f2
--- /dev/null
+++ b/tools/android/forwarder2/device_forwarder_main.cc
@@ -0,0 +1,66 @@
+// 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.
+
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#include <string>
+
+#include "base/command_line.h"
+#include "base/lazy_instance.h"
+#include "base/stringprintf.h"
+#include "tools/android/common/daemon.h"
+#include "tools/android/forwarder2/device_controller.h"
+#include "tools/android/forwarder2/pipe_notifier.h"
+
+namespace {
+
+// Accessed from the signal handler.
+base::LazyInstance<forwarder::PipeNotifier>::Leaky g_notifier;
+
+// Unix domain socket name for Device Controller.
+const char kDefaultAdbSocket[] = "chrome_device_forwarder";
+
+void KillHandler(int /* unused */) {
+  if (!g_notifier.Get().Notify())
+    exit(-1);
+}
+
+}  // namespace
+
+int main(int argc, char** argv) {
+  printf("Device forwarder to forward connections to the Host machine.\n");
+  printf("Like 'adb forward' but in the reverse direction\n");
+
+  CommandLine command_line(argc, argv);
+  string adb_socket_path = command_line.GetSwitchValueASCII("adb_sock");
+  if (adb_socket_path.empty()) {
+    adb_socket_path = kDefaultAdbSocket;
+  }
+  if (tools::HasHelpSwitch(command_line)) {
+    tools::ShowHelp(
+        argv[0],
+        "[--adb_sock=<adb sock>]",
+        base::StringPrintf(
+            "  <adb sock> is the Abstract Unix Domain Socket path "
+            " where Adb is configured to forward from."
+            " Default is %s\n", kDefaultAdbSocket).c_str());
+    return 0;
+  }
+  if (!tools::HasNoSpawnDaemonSwitch(command_line)) {
+    tools::SpawnDaemon(0);
+  }
+
+  signal(SIGTERM, KillHandler);
+  signal(SIGINT, KillHandler);
+
+  forwarder::DeviceController controller(g_notifier.Get().receiver_fd());
+  // TODO(felipeg): We should check if the controller was correctly started
+  // before printing Ready.
+  printf("Device Forwarder Ready.\n");
+  controller.Start(adb_socket_path);
+
+  return 0;
+}