Drm.h revision c0d5f1f8405de861ed6f1725f26cd6601e7103ab 
1/*
2 * Copyright (C) 2013 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 DRM_H_
18
19#define DRM_H_
20
21#include "SharedLibrary.h"
22
23#include <media/IDrm.h>
24#include <media/IDrmClient.h>
25#include <utils/threads.h>
26
27namespace android {
28
29struct DrmFactory;
30struct DrmPlugin;
31
32struct Drm : public BnDrm, public DrmPluginListener {
33    Drm();
34    virtual ~Drm();
35
36    virtual status_t initCheck() const;
37
38    virtual bool isCryptoSchemeSupported(const uint8_t uuid[16]);
39
40    virtual status_t createPlugin(const uint8_t uuid[16]);
41
42    virtual status_t destroyPlugin();
43
44    virtual status_t openSession(Vector<uint8_t> &sessionId);
45
46    virtual status_t closeSession(Vector<uint8_t> const &sessionId);
47
48    virtual status_t
49        getKeyRequest(Vector<uint8_t> const &sessionId,
50                      Vector<uint8_t> const &initData,
51                      String8 const &mimeType, DrmPlugin::KeyType keyType,
52                      KeyedVector<String8, String8> const &optionalParameters,
53                      Vector<uint8_t> &request, String8 &defaultUrl);
54
55    virtual status_t provideKeyResponse(Vector<uint8_t> const &sessionId,
56                                        Vector<uint8_t> const &response,
57                                        Vector<uint8_t> &keySetId);
58
59    virtual status_t removeKeys(Vector<uint8_t> const &keySetId);
60
61    virtual status_t restoreKeys(Vector<uint8_t> const &sessionId,
62                                 Vector<uint8_t> const &keySetId);
63
64    virtual status_t queryKeyStatus(Vector<uint8_t> const &sessionId,
65                                    KeyedVector<String8, String8> &infoMap) const;
66
67    virtual status_t getProvisionRequest(Vector<uint8_t> &request,
68                                         String8 &defaulUrl);
69
70    virtual status_t provideProvisionResponse(Vector<uint8_t> const &response);
71
72    virtual status_t getSecureStops(List<Vector<uint8_t> > &secureStops);
73
74    virtual status_t releaseSecureStops(Vector<uint8_t> const &ssRelease);
75
76    virtual status_t getPropertyString(String8 const &name, String8 &value ) const;
77    virtual status_t getPropertyByteArray(String8 const &name,
78                                          Vector<uint8_t> &value ) const;
79    virtual status_t setPropertyString(String8 const &name, String8 const &value ) const;
80    virtual status_t setPropertyByteArray(String8 const &name,
81                                          Vector<uint8_t> const &value ) const;
82
83    virtual status_t setCipherAlgorithm(Vector<uint8_t> const &sessionId,
84                                        String8 const &algorithm);
85
86    virtual status_t setMacAlgorithm(Vector<uint8_t> const &sessionId,
87                                     String8 const &algorithm);
88
89    virtual status_t encrypt(Vector<uint8_t> const &sessionId,
90                             Vector<uint8_t> const &keyId,
91                             Vector<uint8_t> const &input,
92                             Vector<uint8_t> const &iv,
93                             Vector<uint8_t> &output);
94
95    virtual status_t decrypt(Vector<uint8_t> const &sessionId,
96                             Vector<uint8_t> const &keyId,
97                             Vector<uint8_t> const &input,
98                             Vector<uint8_t> const &iv,
99                             Vector<uint8_t> &output);
100
101    virtual status_t sign(Vector<uint8_t> const &sessionId,
102                          Vector<uint8_t> const &keyId,
103                          Vector<uint8_t> const &message,
104                          Vector<uint8_t> &signature);
105
106    virtual status_t verify(Vector<uint8_t> const &sessionId,
107                            Vector<uint8_t> const &keyId,
108                            Vector<uint8_t> const &message,
109                            Vector<uint8_t> const &signature,
110                            bool &match);
111
112    virtual status_t setListener(const sp<IDrmClient>& listener);
113
114    virtual void sendEvent(DrmPlugin::EventType eventType, int extra,
115                           Vector<uint8_t> const *sessionId,
116                           Vector<uint8_t> const *data);
117
118private:
119    mutable Mutex mLock;
120
121    status_t mInitCheck;
122
123    sp<IDrmClient> mListener;
124    mutable Mutex mEventLock;
125    mutable Mutex mNotifyLock;
126
127    sp<SharedLibrary> mLibrary;
128    DrmFactory *mFactory;
129    DrmPlugin *mPlugin;
130
131    static KeyedVector<Vector<uint8_t>, String8> mUUIDToLibraryPathMap;
132    static KeyedVector<String8, wp<SharedLibrary> > mLibraryPathToOpenLibraryMap;
133    static Mutex mMapLock;
134
135    void findFactoryForScheme(const uint8_t uuid[16]);
136    bool loadLibraryForScheme(const String8 &path, const uint8_t uuid[16]);
137    void closeFactory();
138
139
140    DISALLOW_EVIL_CONSTRUCTORS(Drm);
141};
142
143}  // namespace android
144
145#endif  // CRYPTO_H_
146