1 //
2 // Copyright (C) 2016 The Android Open Source Project
3 //
4 // Licensed under the Apache License, Version 2.0 (the "License");
5 // you may not use this file except in compliance with the License.
6 // You may obtain a copy of the License at
7 //
8 //      http://www.apache.org/licenses/LICENSE-2.0
9 //
10 // Unless required by applicable law or agreed to in writing, software
11 // distributed under the License is distributed on an "AS IS" BASIS,
12 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 // See the License for the specific language governing permissions and
14 // limitations under the License.
15 //
16 
17 #ifndef TPM_MANAGER_CLIENT_TPM_NVRAM_BINDER_PROXY_H_
18 #define TPM_MANAGER_CLIENT_TPM_NVRAM_BINDER_PROXY_H_
19 
20 #include <base/macros.h>
21 
22 #include "android/tpm_manager/ITpmNvram.h"
23 #include "tpm_manager/common/export.h"
24 #include "tpm_manager/common/tpm_nvram_interface.h"
25 
26 namespace tpm_manager {
27 
28 // An implementation of TpmNvramInterface that forwards requests to tpm_managerd
29 // using Binder.
30 class TPM_MANAGER_EXPORT TpmNvramBinderProxy : public TpmNvramInterface {
31  public:
32   TpmNvramBinderProxy() = default;
33   explicit TpmNvramBinderProxy(android::tpm_manager::ITpmNvram* binder);
34   ~TpmNvramBinderProxy() override = default;
35 
36   // Initializes the client. Returns true on success.
37   bool Initialize();
38 
39   // TpmNvramInterface methods. All assume a message loop and binder watcher
40   // have already been configured elsewhere.
41   void DefineSpace(const DefineSpaceRequest& request,
42                    const DefineSpaceCallback& callback) override;
43   void DestroySpace(const DestroySpaceRequest& request,
44                     const DestroySpaceCallback& callback) override;
45   void WriteSpace(const WriteSpaceRequest& request,
46                   const WriteSpaceCallback& callback) override;
47   void ReadSpace(const ReadSpaceRequest& request,
48                  const ReadSpaceCallback& callback) override;
49   void LockSpace(const LockSpaceRequest& request,
50                  const LockSpaceCallback& callback) override;
51   void ListSpaces(const ListSpacesRequest& request,
52                   const ListSpacesCallback& callback) override;
53   void GetSpaceInfo(const GetSpaceInfoRequest& request,
54                     const GetSpaceInfoCallback& callback) override;
55 
56  private:
57   android::sp<android::tpm_manager::ITpmNvram> default_binder_;
58   android::tpm_manager::ITpmNvram* binder_ = nullptr;
59 
60   DISALLOW_COPY_AND_ASSIGN(TpmNvramBinderProxy);
61 };
62 
63 }  // namespace tpm_manager
64 
65 #endif  // TPM_MANAGER_CLIENT_TPM_NVRAM_BINDER_PROXY_H_
66