Revert of Renaming Gnubby and RemoteSecurityKey files/classes/members

remoting/host/security_key/remote_security_key_ipc_server_impl.cc

+// Copyright 2016 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/security_key/remote_security_key_ipc_server_impl.h"
+
+#include <cstdint>
+#include <memory>
+#include <string>
+
+#include "base/callback.h"
+#include "base/callback_helpers.h"
+#include "base/location.h"
+#include "base/threading/thread_checker.h"
+#include "base/threading/thread_task_runner_handle.h"
+#include "base/timer/timer.h"
+#include "ipc/ipc_channel.h"
+#include "ipc/ipc_message.h"
+#include "ipc/ipc_message_macros.h"
+#include "remoting/base/logging.h"
+#include "remoting/host/chromoting_messages.h"
+
+#if defined(OS_WIN)
+#include "base/strings/stringprintf.h"
+#include "base/strings/utf_string_conversions.h"
+#include "base/win/win_util.h"
+#include "remoting/host/ipc_util.h"
+#endif  // defined(OS_WIN)
+
+namespace {
+
+// Returns the command code (the first byte of the data) if it exists, or -1 if
+// the data is empty.
+unsigned int GetCommandCode(const std::string& data) {
+  return data.empty() ? -1 : static_cast<unsigned int>(data[0]);
+}
+
+}  // namespace
+
+namespace remoting {
+
+RemoteSecurityKeyIpcServerImpl::RemoteSecurityKeyIpcServerImpl(
+    int connection_id,
+    uint32_t peer_session_id,
+    base::TimeDelta initial_connect_timeout,
+    const GnubbyAuthHandler::SendMessageCallback& message_callback,
+    const base::Closure& done_callback)
+    : connection_id_(connection_id),
+      peer_session_id_(peer_session_id),
+      initial_connect_timeout_(initial_connect_timeout),
+      done_callback_(done_callback),
+      message_callback_(message_callback),
+      weak_factory_(this) {
+  DCHECK_GT(connection_id_, 0);
+  DCHECK(!done_callback_.is_null());
+  DCHECK(!message_callback_.is_null());
+}
+
+RemoteSecurityKeyIpcServerImpl::~RemoteSecurityKeyIpcServerImpl() {}
+
+bool RemoteSecurityKeyIpcServerImpl::CreateChannel(
+    const std::string& channel_name,
+    base::TimeDelta request_timeout) {
+  DCHECK(thread_checker_.CalledOnValidThread());
+  DCHECK(!ipc_channel_);
+  security_key_request_timeout_ = request_timeout;
+
+#if defined(OS_WIN)
+  // Create a named pipe owned by the current user (the LocalService account
+  // (SID: S-1-5-19) when running in the network process) which is available to
+  // all authenticated users.
+  // presubmit: allow wstring
+  std::wstring user_sid;
+  if (!base::win::GetUserSidString(&user_sid)) {
+    return false;
+  }
+  std::string user_sid_utf8 = base::WideToUTF8(user_sid);
+  std::string security_descriptor = base::StringPrintf(
+      "O:%sG:%sD:(A;;GA;;;AU)", user_sid_utf8.c_str(), user_sid_utf8.c_str());
+
+  base::win::ScopedHandle pipe;
+  if (!CreateIpcChannel(channel_name, security_descriptor, &pipe)) {
+    return false;
+  }
+
+  ipc_channel_ =
+      IPC::Channel::CreateNamedServer(IPC::ChannelHandle(pipe.Get()), this);
+#else  // defined(OS_WIN)
+  ipc_channel_ =
+      IPC::Channel::CreateNamedServer(IPC::ChannelHandle(channel_name), this);
+#endif  // !defined(OS_WIN)
+
+  if (!ipc_channel_->Connect()) {
+    ipc_channel_.reset();
+    return false;
+  }
+  // It is safe to use base::Unretained here as |timer_| will be stopped and
+  // this task will be removed when this instance is being destroyed.  All
+  // methods must execute on the same thread (due to |thread_Checker_| so
+  // the posted task and D'Tor can not execute concurrently.
+  timer_.Start(FROM_HERE, initial_connect_timeout_,
+               base::Bind(&RemoteSecurityKeyIpcServerImpl::OnChannelError,
+                          base::Unretained(this)));
+  return true;
+}
+
+bool RemoteSecurityKeyIpcServerImpl::SendResponse(const std::string& response) {
+  DCHECK(thread_checker_.CalledOnValidThread());
+
+  // Since we have received a response, we update the timer and wait
+  // for a subsequent request.
+  timer_.Start(FROM_HERE, security_key_request_timeout_,
+               base::Bind(&RemoteSecurityKeyIpcServerImpl::OnChannelError,
+                          base::Unretained(this)));
+
+  return ipc_channel_->Send(
+      new ChromotingNetworkToRemoteSecurityKeyMsg_Response(response));
+}
+
+bool RemoteSecurityKeyIpcServerImpl::OnMessageReceived(
+    const IPC::Message& message) {
+  DCHECK(thread_checker_.CalledOnValidThread());
+
+  if (connection_close_pending_) {
+    LOG(WARNING) << "IPC Message ignored because channel is being closed.";
+    return false;
+  }
+
+  bool handled = true;
+  IPC_BEGIN_MESSAGE_MAP(RemoteSecurityKeyIpcServerImpl, message)
+    IPC_MESSAGE_HANDLER(ChromotingRemoteSecurityKeyToNetworkMsg_Request,
+                        OnSecurityKeyRequest)
+    IPC_MESSAGE_UNHANDLED(handled = false)
+  IPC_END_MESSAGE_MAP()
+
+  CHECK(handled) << "Received unexpected IPC type: " << message.type();
+  return handled;
+}
+
+void RemoteSecurityKeyIpcServerImpl::OnChannelConnected(int32_t peer_pid) {
+  DCHECK(thread_checker_.CalledOnValidThread());
+
+#if defined(OS_WIN)
+  DWORD peer_session_id;
+  if (!ProcessIdToSessionId(peer_pid, &peer_session_id)) {
+    PLOG(ERROR) << "ProcessIdToSessionId() failed";
+    connection_close_pending_ = true;
+  } else if (peer_session_id != peer_session_id_) {
+    LOG(ERROR) << "Ignoring connection attempt from outside remoted session.";
+    connection_close_pending_ = true;
+  }
+  if (connection_close_pending_) {
+    base::ThreadTaskRunnerHandle::Get()->PostTask(
+        FROM_HERE, base::Bind(&RemoteSecurityKeyIpcServerImpl::OnChannelError,
+                              weak_factory_.GetWeakPtr()));
+    return;
+  }
+#else   // !defined(OS_WIN)
+  CHECK_EQ(peer_session_id_, UINT32_MAX);
+#endif  // !defined(OS_WIN)
+
+  // Reset the timer to give the client a chance to send the request.
+  timer_.Start(FROM_HERE, initial_connect_timeout_,
+               base::Bind(&RemoteSecurityKeyIpcServerImpl::OnChannelError,
+                          base::Unretained(this)));
+}
+
+void RemoteSecurityKeyIpcServerImpl::OnChannelError() {
+  DCHECK(thread_checker_.CalledOnValidThread());
+  if (ipc_channel_) {
+    ipc_channel_->Close();
+    connection_close_pending_ = false;
+  }
+
+  if (!done_callback_.is_null()) {
+    // Note: This callback may result in this object being torn down.
+    base::ResetAndReturn(&done_callback_).Run();
+  }
+}
+
+void RemoteSecurityKeyIpcServerImpl::OnSecurityKeyRequest(
+    const std::string& request_data) {
+  DCHECK(thread_checker_.CalledOnValidThread());
+
+  // Reset the timer to give the client a chance to send the response.
+  timer_.Start(FROM_HERE, security_key_request_timeout_,
+               base::Bind(&RemoteSecurityKeyIpcServerImpl::OnChannelError,
+                          base::Unretained(this)));
+
+  HOST_LOG << "Received gnubby request: " << GetCommandCode(request_data);
+  message_callback_.Run(connection_id_, request_data);
+}
+
+}  // namespace remoting