1 /* 2 * Copyright (C) 2017 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_HAL_H_ 18 19 #define DRM_HAL_H_ 20 21 #include <android/hardware/drm/1.0/IDrmPlugin.h> 22 #include <android/hardware/drm/1.0/IDrmPluginListener.h> 23 #include <android/hardware/drm/1.0/IDrmFactory.h> 24 25 #include <media/IDrm.h> 26 #include <media/IDrmClient.h> 27 #include <utils/threads.h> 28 29 using ::android::hardware::drm::V1_0::EventType; 30 using ::android::hardware::drm::V1_0::IDrmFactory; 31 using ::android::hardware::drm::V1_0::IDrmPlugin; 32 using ::android::hardware::drm::V1_0::IDrmPluginListener; 33 using ::android::hardware::drm::V1_0::KeyStatus; 34 using ::android::hardware::hidl_vec; 35 using ::android::hardware::Return; 36 using ::android::hardware::Void; 37 38 namespace android { 39 40 struct DrmSessionClientInterface; 41 42 inline bool operator==(const Vector<uint8_t> &l, const Vector<uint8_t> &r) { 43 if (l.size() != r.size()) return false; 44 return memcmp(l.array(), r.array(), l.size()) == 0; 45 } 46 47 struct DrmHal : public BnDrm, 48 public IBinder::DeathRecipient, 49 public IDrmPluginListener { 50 DrmHal(); 51 virtual ~DrmHal(); 52 53 virtual status_t initCheck() const; 54 55 virtual bool isCryptoSchemeSupported(const uint8_t uuid[16], const String8 &mimeType); 56 57 virtual status_t createPlugin(const uint8_t uuid[16], 58 const String8 &appPackageName); 59 60 virtual status_t destroyPlugin(); 61 62 virtual status_t openSession(Vector<uint8_t> &sessionId); 63 64 virtual status_t closeSession(Vector<uint8_t> const &sessionId); 65 66 virtual status_t 67 getKeyRequest(Vector<uint8_t> const &sessionId, 68 Vector<uint8_t> const &initData, 69 String8 const &mimeType, DrmPlugin::KeyType keyType, 70 KeyedVector<String8, String8> const &optionalParameters, 71 Vector<uint8_t> &request, String8 &defaultUrl, 72 DrmPlugin::KeyRequestType *keyRequestType); 73 74 virtual status_t provideKeyResponse(Vector<uint8_t> const &sessionId, 75 Vector<uint8_t> const &response, 76 Vector<uint8_t> &keySetId); 77 78 virtual status_t removeKeys(Vector<uint8_t> const &keySetId); 79 80 virtual status_t restoreKeys(Vector<uint8_t> const &sessionId, 81 Vector<uint8_t> const &keySetId); 82 83 virtual status_t queryKeyStatus(Vector<uint8_t> const &sessionId, 84 KeyedVector<String8, String8> &infoMap) const; 85 86 virtual status_t getProvisionRequest(String8 const &certType, 87 String8 const &certAuthority, 88 Vector<uint8_t> &request, 89 String8 &defaulUrl); 90 91 virtual status_t provideProvisionResponse(Vector<uint8_t> const &response, 92 Vector<uint8_t> &certificate, 93 Vector<uint8_t> &wrappedKey); 94 95 virtual status_t getSecureStops(List<Vector<uint8_t>> &secureStops); 96 virtual status_t getSecureStop(Vector<uint8_t> const &ssid, Vector<uint8_t> &secureStop); 97 98 virtual status_t releaseSecureStops(Vector<uint8_t> const &ssRelease); 99 virtual status_t releaseAllSecureStops(); 100 101 virtual status_t getPropertyString(String8 const &name, String8 &value ) const; 102 virtual status_t getPropertyByteArray(String8 const &name, 103 Vector<uint8_t> &value ) const; 104 virtual status_t setPropertyString(String8 const &name, String8 const &value ) const; 105 virtual status_t setPropertyByteArray(String8 const &name, 106 Vector<uint8_t> const &value ) const; 107 108 virtual status_t setCipherAlgorithm(Vector<uint8_t> const &sessionId, 109 String8 const &algorithm); 110 111 virtual status_t setMacAlgorithm(Vector<uint8_t> const &sessionId, 112 String8 const &algorithm); 113 114 virtual status_t encrypt(Vector<uint8_t> const &sessionId, 115 Vector<uint8_t> const &keyId, 116 Vector<uint8_t> const &input, 117 Vector<uint8_t> const &iv, 118 Vector<uint8_t> &output); 119 120 virtual status_t decrypt(Vector<uint8_t> const &sessionId, 121 Vector<uint8_t> const &keyId, 122 Vector<uint8_t> const &input, 123 Vector<uint8_t> const &iv, 124 Vector<uint8_t> &output); 125 126 virtual status_t sign(Vector<uint8_t> const &sessionId, 127 Vector<uint8_t> const &keyId, 128 Vector<uint8_t> const &message, 129 Vector<uint8_t> &signature); 130 131 virtual status_t verify(Vector<uint8_t> const &sessionId, 132 Vector<uint8_t> const &keyId, 133 Vector<uint8_t> const &message, 134 Vector<uint8_t> const &signature, 135 bool &match); 136 137 virtual status_t signRSA(Vector<uint8_t> const &sessionId, 138 String8 const &algorithm, 139 Vector<uint8_t> const &message, 140 Vector<uint8_t> const &wrappedKey, 141 Vector<uint8_t> &signature); 142 143 virtual status_t setListener(const sp<IDrmClient>& listener); 144 145 // Methods of IDrmPluginListener 146 Return<void> sendEvent(EventType eventType, 147 const hidl_vec<uint8_t>& sessionId, const hidl_vec<uint8_t>& data); 148 149 Return<void> sendExpirationUpdate(const hidl_vec<uint8_t>& sessionId, 150 int64_t expiryTimeInMS); 151 152 Return<void> sendKeysChange(const hidl_vec<uint8_t>& sessionId, 153 const hidl_vec<KeyStatus>& keyStatusList, bool hasNewUsableKey); 154 155 virtual void binderDied(const wp<IBinder> &the_late_who); 156 157 private: 158 static Mutex mLock; 159 160 sp<DrmSessionClientInterface> mDrmSessionClient; 161 162 sp<IDrmClient> mListener; 163 mutable Mutex mEventLock; 164 mutable Mutex mNotifyLock; 165 166 const Vector<sp<IDrmFactory>> mFactories; 167 sp<IDrmPlugin> mPlugin; 168 169 Vector<Vector<uint8_t>> mOpenSessions; 170 void closeOpenSessions(); 171 172 /** 173 * mInitCheck is: 174 * NO_INIT if a plugin hasn't been created yet 175 * ERROR_UNSUPPORTED if a plugin can't be created for the uuid 176 * OK after a plugin has been created and mPlugin is valid 177 */ 178 status_t mInitCheck; 179 180 Vector<sp<IDrmFactory>> makeDrmFactories(); 181 sp<IDrmPlugin> makeDrmPlugin(const sp<IDrmFactory>& factory, 182 const uint8_t uuid[16], const String8& appPackageName); 183 184 void writeByteArray(Parcel &obj, const hidl_vec<uint8_t>& array); 185 186 void reportMetrics() const; 187 status_t getPropertyStringInternal(String8 const &name, String8 &value) const; 188 status_t getPropertyByteArrayInternal(String8 const &name, 189 Vector<uint8_t> &value) const; 190 191 DISALLOW_EVIL_CONSTRUCTORS(DrmHal); 192 }; 193 194 } // namespace android 195 196 #endif // DRM_HAL_H_ 197
