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      1 // Copyright 2013 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #ifndef REMOTING_PROTOCOL_PAIRING_REGISTRY_DELEGATE_WIN_H_
      6 #define REMOTING_PROTOCOL_PAIRING_REGISTRY_DELEGATE_WIN_H_
      7 
      8 #include <string>
      9 
     10 #include "base/basictypes.h"
     11 #include "base/compiler_specific.h"
     12 #include "base/memory/scoped_ptr.h"
     13 #include "base/win/registry.h"
     14 #include "remoting/protocol/pairing_registry.h"
     15 
     16 namespace base {
     17 class ListValue;
     18 }  // namespace base
     19 
     20 namespace remoting {
     21 
     22 #if defined(OFFICIAL_BUILD)
     23 const wchar_t kPairingRegistryKeyName[] =
     24     L"SOFTWARE\\Google\\Chrome Remote Desktop\\paired-clients";
     25 #else
     26 const wchar_t kPairingRegistryKeyName[] =
     27     L"SOFTWARE\\Chromoting\\paired-clients";
     28 #endif
     29 
     30 const wchar_t kPairingRegistryClientsKeyName[] = L"secrets";
     31 const wchar_t kPairingRegistrySecretsKeyName[] = L"clients";
     32 
     33 // Stores client pairing information in Windows registry. Two separate registry
     34 // keys are used:
     35 //  - |privileged| - contains the shared secrets of all pairings. This key must
     36 //                   be protected by a strong ACL denying access to unprivileged
     37 //                   code.
     38 //  - |unprivileged| - contains the rest of pairing state.
     39 //
     40 // Creator of this object is responsible for passing the registry key handles
     41 // with appropriate access. |privileged| may be NULL if read-only access is
     42 // sufficient. Shared secrets will not be returned in such a case.
     43 class PairingRegistryDelegateWin
     44     : public protocol::PairingRegistry::Delegate {
     45  public:
     46   PairingRegistryDelegateWin();
     47   virtual ~PairingRegistryDelegateWin();
     48 
     49   // Passes the root keys to be used to access the pairing registry store.
     50   // |privileged| is optional and may be NULL. The caller retains ownership of
     51   // the passed handles.
     52   bool SetRootKeys(HKEY privileged, HKEY unprivileged);
     53 
     54   // PairingRegistry::Delegate interface
     55   virtual scoped_ptr<base::ListValue> LoadAll() OVERRIDE;
     56   virtual bool DeleteAll() OVERRIDE;
     57   virtual protocol::PairingRegistry::Pairing Load(
     58       const std::string& client_id) OVERRIDE;
     59   virtual bool Save(const protocol::PairingRegistry::Pairing& pairing) OVERRIDE;
     60   virtual bool Delete(const std::string& client_id) OVERRIDE;
     61 
     62  private:
     63   base::win::RegKey privileged_;
     64   base::win::RegKey unprivileged_;
     65 
     66   DISALLOW_COPY_AND_ASSIGN(PairingRegistryDelegateWin);
     67 };
     68 
     69 }  // namespace remoting
     70 
     71 #endif  // REMOTING_PROTOCOL_PAIRING_REGISTRY_DELEGATE_WIN_H_
     72