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      1 /*
      2  * Copyright (C) 2010 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 //#define LOG_NDEBUG 0
     18 #define LOG_TAG "DrmManagerClientImpl(Native)"
     19 #include <utils/Log.h>
     20 
     21 #include <utils/String8.h>
     22 #include <utils/Vector.h>
     23 #include <binder/IServiceManager.h>
     24 
     25 #include "DrmManagerClientImpl.h"
     26 
     27 using namespace android;
     28 
     29 #define INVALID_VALUE -1
     30 
     31 Mutex DrmManagerClientImpl::sMutex;
     32 sp<IDrmManagerService> DrmManagerClientImpl::sDrmManagerService;
     33 sp<DrmManagerClientImpl::DeathNotifier> DrmManagerClientImpl::sDeathNotifier;
     34 const String8 DrmManagerClientImpl::EMPTY_STRING("");
     35 
     36 DrmManagerClientImpl* DrmManagerClientImpl::create(
     37         int* pUniqueId, bool isNative) {
     38     *pUniqueId = getDrmManagerService()->addUniqueId(isNative);
     39 
     40     return new DrmManagerClientImpl();
     41 }
     42 
     43 void DrmManagerClientImpl::remove(int uniqueId) {
     44     getDrmManagerService()->removeUniqueId(uniqueId);
     45 }
     46 
     47 const sp<IDrmManagerService>& DrmManagerClientImpl::getDrmManagerService() {
     48     Mutex::Autolock lock(sMutex);
     49     if (NULL == sDrmManagerService.get()) {
     50         sp<IServiceManager> sm = defaultServiceManager();
     51         sp<IBinder> binder;
     52         do {
     53             binder = sm->getService(String16("drm.drmManager"));
     54             if (binder != 0) {
     55                 break;
     56             }
     57             ALOGW("DrmManagerService not published, waiting...");
     58             struct timespec reqt;
     59             reqt.tv_sec  = 0;
     60             reqt.tv_nsec = 500000000; //0.5 sec
     61             nanosleep(&reqt, NULL);
     62         } while (true);
     63         if (NULL == sDeathNotifier.get()) {
     64             sDeathNotifier = new DeathNotifier();
     65         }
     66         binder->linkToDeath(sDeathNotifier);
     67         sDrmManagerService = interface_cast<IDrmManagerService>(binder);
     68     }
     69     return sDrmManagerService;
     70 }
     71 
     72 void DrmManagerClientImpl::addClient(int uniqueId) {
     73     getDrmManagerService()->addClient(uniqueId);
     74 }
     75 
     76 void DrmManagerClientImpl::removeClient(int uniqueId) {
     77     getDrmManagerService()->removeClient(uniqueId);
     78 }
     79 
     80 status_t DrmManagerClientImpl::setOnInfoListener(
     81             int uniqueId,
     82             const sp<DrmManagerClient::OnInfoListener>& infoListener) {
     83     Mutex::Autolock _l(mLock);
     84     mOnInfoListener = infoListener;
     85     return getDrmManagerService()->setDrmServiceListener(uniqueId,
     86             (NULL != infoListener.get()) ? this : NULL);
     87 }
     88 
     89 status_t DrmManagerClientImpl::installDrmEngine(
     90         int uniqueId, const String8& drmEngineFile) {
     91     status_t status = DRM_ERROR_UNKNOWN;
     92     if (EMPTY_STRING != drmEngineFile) {
     93         status = getDrmManagerService()->installDrmEngine(uniqueId, drmEngineFile);
     94     }
     95     return status;
     96 }
     97 
     98 DrmConstraints* DrmManagerClientImpl::getConstraints(
     99         int uniqueId, const String8* path, const int action) {
    100     DrmConstraints *drmConstraints = NULL;
    101     if ((NULL != path) && (EMPTY_STRING != *path)) {
    102         drmConstraints =
    103             getDrmManagerService()->getConstraints(uniqueId, path, action);
    104     }
    105     return drmConstraints;
    106 }
    107 
    108 DrmMetadata* DrmManagerClientImpl::getMetadata(int uniqueId, const String8* path) {
    109     DrmMetadata *drmMetadata = NULL;
    110     if ((NULL != path) && (EMPTY_STRING != *path)) {
    111         drmMetadata = getDrmManagerService()->getMetadata(uniqueId, path);
    112     }
    113     return drmMetadata;
    114 }
    115 
    116 bool DrmManagerClientImpl::canHandle(
    117         int uniqueId, const String8& path, const String8& mimeType) {
    118     bool retCode = false;
    119     if ((EMPTY_STRING != path) || (EMPTY_STRING != mimeType)) {
    120         retCode = getDrmManagerService()->canHandle(uniqueId, path, mimeType);
    121     }
    122     return retCode;
    123 }
    124 
    125 DrmInfoStatus* DrmManagerClientImpl::processDrmInfo(
    126         int uniqueId, const DrmInfo* drmInfo) {
    127     DrmInfoStatus *drmInfoStatus = NULL;
    128     if (NULL != drmInfo) {
    129         drmInfoStatus = getDrmManagerService()->processDrmInfo(uniqueId, drmInfo);
    130     }
    131     return drmInfoStatus;
    132 }
    133 
    134 DrmInfo* DrmManagerClientImpl::acquireDrmInfo(
    135         int uniqueId, const DrmInfoRequest* drmInfoRequest) {
    136     DrmInfo* drmInfo = NULL;
    137     if (NULL != drmInfoRequest) {
    138         drmInfo = getDrmManagerService()->acquireDrmInfo(uniqueId, drmInfoRequest);
    139     }
    140     return drmInfo;
    141 }
    142 
    143 status_t DrmManagerClientImpl::saveRights(int uniqueId, const DrmRights& drmRights,
    144             const String8& rightsPath, const String8& contentPath) {
    145     return getDrmManagerService()->saveRights(
    146                 uniqueId, drmRights, rightsPath, contentPath);
    147 }
    148 
    149 String8 DrmManagerClientImpl::getOriginalMimeType(
    150         int uniqueId, const String8& path, int fd) {
    151     String8 mimeType = EMPTY_STRING;
    152     if (EMPTY_STRING != path) {
    153         mimeType = getDrmManagerService()->getOriginalMimeType(uniqueId, path, fd);
    154     }
    155     return mimeType;
    156 }
    157 
    158 int DrmManagerClientImpl::getDrmObjectType(
    159             int uniqueId, const String8& path, const String8& mimeType) {
    160     int drmOjectType = DrmObjectType::UNKNOWN;
    161     if ((EMPTY_STRING != path) || (EMPTY_STRING != mimeType)) {
    162          drmOjectType =
    163              getDrmManagerService()->getDrmObjectType(uniqueId, path, mimeType);
    164     }
    165     return drmOjectType;
    166 }
    167 
    168 int DrmManagerClientImpl::checkRightsStatus(
    169             int uniqueId, const String8& path, int action) {
    170     int rightsStatus = RightsStatus::RIGHTS_INVALID;
    171     if (EMPTY_STRING != path) {
    172         rightsStatus =
    173             getDrmManagerService()->checkRightsStatus(uniqueId, path, action);
    174     }
    175     return rightsStatus;
    176 }
    177 
    178 status_t DrmManagerClientImpl::consumeRights(
    179             int uniqueId, sp<DecryptHandle> &decryptHandle,
    180             int action, bool reserve) {
    181     status_t status = DRM_ERROR_UNKNOWN;
    182     if (NULL != decryptHandle.get()) {
    183         status = getDrmManagerService()->consumeRights(
    184                 uniqueId, decryptHandle.get(), action, reserve);
    185     }
    186     return status;
    187 }
    188 
    189 status_t DrmManagerClientImpl::setPlaybackStatus(
    190             int uniqueId, sp<DecryptHandle> &decryptHandle,
    191             int playbackStatus, int64_t position) {
    192     status_t status = DRM_ERROR_UNKNOWN;
    193     if (NULL != decryptHandle.get()) {
    194         status = getDrmManagerService()->setPlaybackStatus(
    195                 uniqueId, decryptHandle.get(), playbackStatus, position);
    196     }
    197     return status;
    198 }
    199 
    200 bool DrmManagerClientImpl::validateAction(
    201             int uniqueId, const String8& path,
    202             int action, const ActionDescription& description) {
    203     bool retCode = false;
    204     if (EMPTY_STRING != path) {
    205         retCode = getDrmManagerService()->validateAction(
    206                 uniqueId, path, action, description);
    207     }
    208     return retCode;
    209 }
    210 
    211 status_t DrmManagerClientImpl::removeRights(int uniqueId, const String8& path) {
    212     status_t status = DRM_ERROR_UNKNOWN;
    213     if (EMPTY_STRING != path) {
    214         status = getDrmManagerService()->removeRights(uniqueId, path);
    215     }
    216     return status;
    217 }
    218 
    219 status_t DrmManagerClientImpl::removeAllRights(int uniqueId) {
    220     return getDrmManagerService()->removeAllRights(uniqueId);
    221 }
    222 
    223 int DrmManagerClientImpl::openConvertSession(
    224         int uniqueId, const String8& mimeType) {
    225     int retCode = INVALID_VALUE;
    226     if (EMPTY_STRING != mimeType) {
    227         retCode = getDrmManagerService()->openConvertSession(uniqueId, mimeType);
    228     }
    229     return retCode;
    230 }
    231 
    232 DrmConvertedStatus* DrmManagerClientImpl::convertData(
    233             int uniqueId, int convertId, const DrmBuffer* inputData) {
    234     DrmConvertedStatus* drmConvertedStatus = NULL;
    235     if (NULL != inputData) {
    236          drmConvertedStatus =
    237              getDrmManagerService()->convertData(uniqueId, convertId, inputData);
    238     }
    239     return drmConvertedStatus;
    240 }
    241 
    242 DrmConvertedStatus* DrmManagerClientImpl::closeConvertSession(
    243         int uniqueId, int convertId) {
    244     return getDrmManagerService()->closeConvertSession(uniqueId, convertId);
    245 }
    246 
    247 status_t DrmManagerClientImpl::getAllSupportInfo(
    248             int uniqueId, int* length, DrmSupportInfo** drmSupportInfoArray) {
    249     status_t status = DRM_ERROR_UNKNOWN;
    250     if ((NULL != drmSupportInfoArray) && (NULL != length)) {
    251         status = getDrmManagerService()->getAllSupportInfo(
    252                 uniqueId, length, drmSupportInfoArray);
    253     }
    254     return status;
    255 }
    256 
    257 sp<DecryptHandle> DrmManagerClientImpl::openDecryptSession(
    258             int uniqueId, int fd, off64_t offset,
    259             off64_t length, const char* mime) {
    260 
    261     return getDrmManagerService()->openDecryptSession(
    262                 uniqueId, fd, offset, length, mime);
    263 }
    264 
    265 sp<DecryptHandle> DrmManagerClientImpl::openDecryptSession(
    266         int uniqueId, const char* uri, const char* mime) {
    267 
    268     DecryptHandle* handle = NULL;
    269     if (NULL != uri) {
    270         handle = getDrmManagerService()->openDecryptSession(uniqueId, uri, mime);
    271     }
    272     return handle;
    273 }
    274 
    275 sp<DecryptHandle> DrmManagerClientImpl::openDecryptSession(
    276             int uniqueId, const DrmBuffer& buf, const String8& mimeType) {
    277     return getDrmManagerService()->openDecryptSession(uniqueId, buf, mimeType);
    278 }
    279 
    280 status_t DrmManagerClientImpl::closeDecryptSession(
    281         int uniqueId, sp<DecryptHandle> &decryptHandle) {
    282     status_t status = DRM_ERROR_UNKNOWN;
    283     if (NULL != decryptHandle.get()) {
    284         status = getDrmManagerService()->closeDecryptSession(
    285                 uniqueId, decryptHandle.get());
    286     }
    287     return status;
    288 }
    289 
    290 status_t DrmManagerClientImpl::initializeDecryptUnit(
    291         int uniqueId, sp<DecryptHandle> &decryptHandle,
    292         int decryptUnitId, const DrmBuffer* headerInfo) {
    293     status_t status = DRM_ERROR_UNKNOWN;
    294     if ((NULL != decryptHandle.get()) && (NULL != headerInfo)) {
    295         status = getDrmManagerService()->initializeDecryptUnit(
    296                 uniqueId, decryptHandle.get(), decryptUnitId, headerInfo);
    297     }
    298     return status;
    299 }
    300 
    301 status_t DrmManagerClientImpl::decrypt(
    302         int uniqueId, sp<DecryptHandle> &decryptHandle,
    303         int decryptUnitId, const DrmBuffer* encBuffer,
    304         DrmBuffer** decBuffer, DrmBuffer* IV) {
    305     status_t status = DRM_ERROR_UNKNOWN;
    306     if ((NULL != decryptHandle.get()) && (NULL != encBuffer)
    307         && (NULL != decBuffer) && (NULL != *decBuffer)) {
    308         status = getDrmManagerService()->decrypt(
    309                 uniqueId, decryptHandle.get(), decryptUnitId,
    310                 encBuffer, decBuffer, IV);
    311     }
    312     return status;
    313 }
    314 
    315 status_t DrmManagerClientImpl::finalizeDecryptUnit(
    316             int uniqueId, sp<DecryptHandle> &decryptHandle, int decryptUnitId) {
    317     status_t status = DRM_ERROR_UNKNOWN;
    318     if (NULL != decryptHandle.get()) {
    319         status = getDrmManagerService()->finalizeDecryptUnit(
    320                     uniqueId, decryptHandle.get(), decryptUnitId);
    321     }
    322     return status;
    323 }
    324 
    325 ssize_t DrmManagerClientImpl::pread(int uniqueId, sp<DecryptHandle> &decryptHandle,
    326             void* buffer, ssize_t numBytes, off64_t offset) {
    327     ssize_t retCode = INVALID_VALUE;
    328     if ((NULL != decryptHandle.get()) && (NULL != buffer) && (0 < numBytes)) {
    329         retCode = getDrmManagerService()->pread(
    330                 uniqueId, decryptHandle.get(), buffer, numBytes, offset);
    331     }
    332     return retCode;
    333 }
    334 
    335 status_t DrmManagerClientImpl::notify(const DrmInfoEvent& event) {
    336     if (NULL != mOnInfoListener.get()) {
    337         Mutex::Autolock _l(mLock);
    338         sp<DrmManagerClient::OnInfoListener> listener = mOnInfoListener;
    339         listener->onInfo(event);
    340     }
    341     return DRM_NO_ERROR;
    342 }
    343 
    344 DrmManagerClientImpl::DeathNotifier::~DeathNotifier() {
    345     Mutex::Autolock lock(sMutex);
    346     if (NULL != sDrmManagerService.get()) {
    347         sDrmManagerService->asBinder()->unlinkToDeath(this);
    348     }
    349 }
    350 
    351 void DrmManagerClientImpl::DeathNotifier::binderDied(const wp<IBinder>& who) {
    352     Mutex::Autolock lock(sMutex);
    353     DrmManagerClientImpl::sDrmManagerService.clear();
    354     ALOGW("DrmManager server died!");
    355 }
    356 
    357