Implemented local login check for PAM (only enabled on Linux for now).

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"
@@ skipping 60 matching lines @@
 #include "remoting/host/posix/signal_handler.h"
 #endif  // defined(OS_POSIX)
 
 #if defined(OS_MACOSX)
 #include "base/mac/scoped_cftyperef.h"
 #include "base/mac/scoped_nsautorelease_pool.h"
 #endif  // defined(OS_MACOSX)
 
 #if defined(OS_LINUX)
 #include "remoting/host/audio_capturer_linux.h"
+#include "remoting/host/pam_authorization_factory_posix.h"
 #endif  // defined(OS_LINUX)
 
 // N.B. OS_WIN is defined by including src/base headers.
 #if defined(OS_WIN)
 #include <commctrl.h>
 #include "base/win/scoped_handle.h"
 #include "remoting/host/win/session_desktop_environment_factory.h"
 #endif  // defined(OS_WIN)
 
 #if defined(TOOLKIT_GTK)
@@ skipping 295 matching lines @@
   std::string local_certificate = key_pair_.GenerateCertificate();
   if (local_certificate.empty()) {
     LOG(ERROR) << "Failed to generate host certificate.";
     Shutdown(kInitializationFailed);
     return;
   }
 
   scoped_ptr<protocol::AuthenticatorFactory> factory(
       new protocol::Me2MeHostAuthenticatorFactory(
           local_certificate, *key_pair_.private_key(), host_secret_hash_));
+#if defined(OS_LINUX)
+  // On Linux, perform a PAM authorization step after authentication.
+  factory.reset(new PamAuthorizationFactory(factory.Pass()));
+#endif
   host_->SetAuthenticatorFactory(factory.Pass());
 }
 
 // IPC::Listener implementation.
 bool HostProcess::OnMessageReceived(const IPC::Message& message) {
   DCHECK(context_->ui_task_runner()->BelongsToCurrentThread());
 
 #if defined(REMOTING_MULTI_PROCESS)
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(HostProcess, message)
@@ skipping 539 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)