Drm.h revision 68b15554f6dca3b056eac517fe5fa2fd4ee80a33 
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,
33             public IBinder::DeathRecipient,
34             public DrmPluginListener {
35    Drm();
36    virtual ~Drm();
37
38    virtual status_t initCheck() const;
39
40    virtual bool isCryptoSchemeSupported(const uint8_t uuid[16], const String8 &mimeType);
41
42    virtual status_t createPlugin(const uint8_t uuid[16]);
43
44    virtual status_t destroyPlugin();
45
46    virtual status_t openSession(Vector<uint8_t> &sessionId);
47
48    virtual status_t closeSession(Vector<uint8_t> const &sessionId);
49
50    virtual status_t
51        getKeyRequest(Vector<uint8_t> const &sessionId,
52                      Vector<uint8_t> const &initData,
53                      String8 const &mimeType, DrmPlugin::KeyType keyType,
54                      KeyedVector<String8, String8> const &optionalParameters,
55                      Vector<uint8_t> &request, String8 &defaultUrl);
56
57    virtual status_t provideKeyResponse(Vector<uint8_t> const &sessionId,
58                                        Vector<uint8_t> const &response,
59                                        Vector<uint8_t> &keySetId);
60
61    virtual status_t removeKeys(Vector<uint8_t> const &keySetId);
62
63    virtual status_t restoreKeys(Vector<uint8_t> const &sessionId,
64                                 Vector<uint8_t> const &keySetId);
65
66    virtual status_t queryKeyStatus(Vector<uint8_t> const &sessionId,
67                                    KeyedVector<String8, String8> &infoMap) const;
68
69    virtual status_t getProvisionRequest(String8 const &certType,
70                                         String8 const &certAuthority,
71                                         Vector<uint8_t> &request,
72                                         String8 &defaulUrl);
73
74    virtual status_t provideProvisionResponse(Vector<uint8_t> const &response,
75                                              Vector<uint8_t> &certificate,
76                                              Vector<uint8_t> &wrappedKey);
77
78    virtual status_t unprovisionDevice();
79
80    virtual status_t getSecureStops(List<Vector<uint8_t> > &secureStops);
81
82    virtual status_t releaseSecureStops(Vector<uint8_t> const &ssRelease);
83
84    virtual status_t getPropertyString(String8 const &name, String8 &value ) const;
85    virtual status_t getPropertyByteArray(String8 const &name,
86                                          Vector<uint8_t> &value ) const;
87    virtual status_t setPropertyString(String8 const &name, String8 const &value ) const;
88    virtual status_t setPropertyByteArray(String8 const &name,
89                                          Vector<uint8_t> const &value ) const;
90
91    virtual status_t setCipherAlgorithm(Vector<uint8_t> const &sessionId,
92                                        String8 const &algorithm);
93
94    virtual status_t setMacAlgorithm(Vector<uint8_t> const &sessionId,
95                                     String8 const &algorithm);
96
97    virtual status_t encrypt(Vector<uint8_t> const &sessionId,
98                             Vector<uint8_t> const &keyId,
99                             Vector<uint8_t> const &input,
100                             Vector<uint8_t> const &iv,
101                             Vector<uint8_t> &output);
102
103    virtual status_t decrypt(Vector<uint8_t> const &sessionId,
104                             Vector<uint8_t> const &keyId,
105                             Vector<uint8_t> const &input,
106                             Vector<uint8_t> const &iv,
107                             Vector<uint8_t> &output);
108
109    virtual status_t sign(Vector<uint8_t> const &sessionId,
110                          Vector<uint8_t> const &keyId,
111                          Vector<uint8_t> const &message,
112                          Vector<uint8_t> &signature);
113
114    virtual status_t verify(Vector<uint8_t> const &sessionId,
115                            Vector<uint8_t> const &keyId,
116                            Vector<uint8_t> const &message,
117                            Vector<uint8_t> const &signature,
118                            bool &match);
119
120    virtual status_t signRSA(Vector<uint8_t> const &sessionId,
121                             String8 const &algorithm,
122                             Vector<uint8_t> const &message,
123                             Vector<uint8_t> const &wrappedKey,
124                             Vector<uint8_t> &signature);
125
126    virtual status_t setListener(const sp<IDrmClient>& listener);
127
128    virtual void sendEvent(DrmPlugin::EventType eventType, int extra,
129                           Vector<uint8_t> const *sessionId,
130                           Vector<uint8_t> const *data);
131
132    virtual void binderDied(const wp<IBinder> &the_late_who);
133
134private:
135    mutable Mutex mLock;
136
137    status_t mInitCheck;
138
139    sp<IDrmClient> mListener;
140    mutable Mutex mEventLock;
141    mutable Mutex mNotifyLock;
142
143    sp<SharedLibrary> mLibrary;
144    DrmFactory *mFactory;
145    DrmPlugin *mPlugin;
146
147    static KeyedVector<Vector<uint8_t>, String8> mUUIDToLibraryPathMap;
148    static KeyedVector<String8, wp<SharedLibrary> > mLibraryPathToOpenLibraryMap;
149    static Mutex mMapLock;
150
151    void findFactoryForScheme(const uint8_t uuid[16]);
152    bool loadLibraryForScheme(const String8 &path, const uint8_t uuid[16]);
153    void closeFactory();
154
155
156    DISALLOW_EVIL_CONSTRUCTORS(Drm);
157};
158
159}  // namespace android
160
161#endif  // CRYPTO_H_
162