Bootstrap Mojo IPC independent of Chrome IPC

mojo/edk/system/node_channel.h

 // 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.
 
 #ifndef MOJO_EDK_SYSTEM_NODE_CHANNEL_H_
 #define MOJO_EDK_SYSTEM_NODE_CHANNEL_H_
 
 #include <unordered_map>
 
 #include "base/macros.h"
@@ skipping 69 matching lines @@
   // Permanently stop the channel from sending or receiving messages.
   void ShutDown();
 
   void SetRemoteProcessHandle(base::ProcessHandle process_handle);
   bool HasRemoteProcessHandle();
   ScopedPlatformHandle CopyRemoteProcessHandle();
 
   // Used for context in Delegate calls (via |from_node| arguments.)
   void SetRemoteNodeName(const ports::NodeName& name);
 
+  // If this is called with a non-empty |secret|, the channel expects the next
+  // message it receives to exactly match the contents of |secret|. This must be
+  // called before calling Start().
+  void SetExpectedSecret(const std::string& secret);
+
+  // Sends a secret to the remote end.
+  void SendSecret(const std::string& secret);
+
   void AcceptChild(const ports::NodeName& parent_name,
                    const ports::NodeName& token);
   void AcceptParent(const ports::NodeName& token,
                     const ports::NodeName& child_name);
   void AddBrokerClient(const ports::NodeName& client_name,
                        ScopedPlatformHandle process_handle);
   void BrokerClientAdded(const ports::NodeName& client_name,
                          ScopedPlatformHandle broker_channel);
   void AcceptBrokerClient(const ports::NodeName& broker_name,
                           ScopedPlatformHandle broker_channel);
@@ skipping 28 matching lines @@
   void OnChannelError() override;
 
   void WriteChannelMessage(Channel::MessagePtr message);
 
   Delegate* const delegate_;
   const scoped_refptr<base::TaskRunner> io_task_runner_;
 
   base::Lock channel_lock_;
   scoped_refptr<Channel> channel_;
 
+  // Must be set before calling Start(), if at all.
+  std::string expected_secret_;
+
   // Must only be accessed from |io_task_runner_|'s thread.
   ports::NodeName remote_node_name_;
 
 #if defined(OS_WIN)
   base::Lock remote_process_handle_lock_;
   base::ProcessHandle remote_process_handle_ = base::kNullProcessHandle;
 #endif
 
   DISALLOW_COPY_AND_ASSIGN(NodeChannel);
 };
 
 }  // namespace edk
 }  // namespace mojo
 
 #endif  // MOJO_EDK_SYSTEM_NODE_CHANNEL_H_