Block event processing on host/client until the client has authenticated.

remoting/protocol/host_stub.h

 // Copyright (c) 2010 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.
 
 // Interface of a host that receives commands from a Chromoting client.
 //
-// This interterface handles control messages defined in contro.proto.
+// This interface handles control messages defined in contro.proto.
 
 #ifndef REMOTING_PROTOCOL_HOST_STUB_H_
 #define REMOTING_PROTOCOL_HOST_STUB_H_
 
 #include "base/basictypes.h"
 
 class Task;
 
 namespace remoting {
 namespace protocol {
 
 class SuggestResolutionRequest;
 class LocalLoginCredentials;
 
 class HostStub {
  public:
-  HostStub() {}
+  HostStub() : enable_(false) {}
   virtual ~HostStub() {};

[dmac, 2011/03/04 01:36:27]

since this is no longer pure virtual, move out of line?

[garykac, 2011/03/04 05:33:24]

Done.

 
   virtual void SuggestResolution(
       const SuggestResolutionRequest* msg, Task* done) = 0;
   virtual void BeginSessionRequest(
       const LocalLoginCredentials* credentials, Task* done) = 0;
 
+  // Enable the client->host control channel.
+  // This should be set to true only after a trusted communication channel has
+  // been established.
+  // When this is false, only a limited set of control messages will be
+  // processed.
+  void SetEnable(bool enable) {

[dmac, 2011/03/04 01:36:27]

actually the var name should probably be enabled, and this should be
set_enabled(bool enabled).

[garykac, 2011/03/04 05:33:24]

Done.

+    enable_ = enable;
+  }
+
+  // Is the control channel enabled?
+  // I.e., should we be processing control events?
+  bool Enabled() {
+    return enable_;
+  }
+
  private:
+  // Initially false, this controls whether the control events received from the
+  // client should be processed.
+  bool enable_;
+
   DISALLOW_COPY_AND_ASSIGN(HostStub);
 };
 
 }  // namespace protocol
 }  // namespace remoting
 
 #endif  // REMOTING_PROTOCOL_HOST_STUB_H_