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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 #include <cutils/properties.h>
     25 
     26 #include "DrmManagerClientImpl.h"
     27 #include "NoOpDrmManagerClientImpl.h"
     28 
     29 using namespace android;
     30 
     31 #define INVALID_VALUE (-1)
     32 
     33 Mutex DrmManagerClientImpl::sMutex;
     34 sp<IDrmManagerService> DrmManagerClientImpl::sDrmManagerService;
     35 sp<DrmManagerClientImpl::DeathNotifier> DrmManagerClientImpl::sDeathNotifier;
     36 const String8 DrmManagerClientImpl::EMPTY_STRING("");
     37 
     38 DrmManagerClientImpl* DrmManagerClientImpl::create(
     39         int* pUniqueId, bool isNative) {
     40     sp<IDrmManagerService> service = getDrmManagerService();
     41     if (service != NULL) {
     42         *pUniqueId = getDrmManagerService()->addUniqueId(isNative);
     43         return new DrmManagerClientImpl();
     44     }
     45     return new NoOpDrmManagerClientImpl();
     46 }
     47 
     48 void DrmManagerClientImpl::remove(int uniqueId) {
     49     getDrmManagerService()->removeUniqueId(uniqueId);
     50 }
     51 
     52 const sp<IDrmManagerService>& DrmManagerClientImpl::getDrmManagerService() {
     53     Mutex::Autolock lock(sMutex);
     54     if (NULL == sDrmManagerService.get()) {
     55         char value[PROPERTY_VALUE_MAX];
     56         if (property_get("drm.service.enabled", value, NULL) == 0) {
     57             // Drm is undefined for this device
     58             return sDrmManagerService;
     59         }
     60 
     61         sp<IServiceManager> sm = defaultServiceManager();
     62         sp<IBinder> binder;
     63         do {
     64             binder = sm->getService(String16("drm.drmManager"));
     65             if (binder != 0) {
     66                 break;
     67             }
     68             ALOGW("DrmManagerService not published, waiting...");
     69             struct timespec reqt;
     70             reqt.tv_sec  = 0;
     71             reqt.tv_nsec = 500000000; //0.5 sec
     72             nanosleep(&reqt, NULL);
     73         } while (true);
     74         if (NULL == sDeathNotifier.get()) {
     75             sDeathNotifier = new DeathNotifier();
     76         }
     77         binder->linkToDeath(sDeathNotifier);
     78         sDrmManagerService = interface_cast<IDrmManagerService>(binder);
     79     }
     80     return sDrmManagerService;
     81 }
     82 
     83 void DrmManagerClientImpl::addClient(int uniqueId) {
     84     getDrmManagerService()->addClient(uniqueId);
     85 }
     86 
     87 void DrmManagerClientImpl::removeClient(int uniqueId) {
     88     getDrmManagerService()->removeClient(uniqueId);
     89 }
     90 
     91 status_t DrmManagerClientImpl::setOnInfoListener(
     92             int uniqueId,
     93             const sp<DrmManagerClient::OnInfoListener>& infoListener) {
     94     Mutex::Autolock _l(mLock);
     95     mOnInfoListener = infoListener;
     96     return getDrmManagerService()->setDrmServiceListener(uniqueId,
     97             (NULL != infoListener.get()) ? this : NULL);
     98 }
     99 
    100 DrmConstraints* DrmManagerClientImpl::getConstraints(
    101         int uniqueId, const String8* path, const int action) {
    102     DrmConstraints *drmConstraints = NULL;
    103     if ((NULL != path) && (EMPTY_STRING != *path)) {
    104         drmConstraints =
    105             getDrmManagerService()->getConstraints(uniqueId, path, action);
    106     }
    107     return drmConstraints;
    108 }
    109 
    110 DrmMetadata* DrmManagerClientImpl::getMetadata(int uniqueId, const String8* path) {
    111     DrmMetadata *drmMetadata = NULL;
    112     if ((NULL != path) && (EMPTY_STRING != *path)) {
    113         drmMetadata = getDrmManagerService()->getMetadata(uniqueId, path);
    114     }
    115     return drmMetadata;
    116 }
    117 
    118 bool DrmManagerClientImpl::canHandle(
    119         int uniqueId, const String8& path, const String8& mimeType) {
    120     bool retCode = false;
    121     if ((EMPTY_STRING != path) || (EMPTY_STRING != mimeType)) {
    122         retCode = getDrmManagerService()->canHandle(uniqueId, path, mimeType);
    123     }
    124     return retCode;
    125 }
    126 
    127 DrmInfoStatus* DrmManagerClientImpl::processDrmInfo(
    128         int uniqueId, const DrmInfo* drmInfo) {
    129     DrmInfoStatus *drmInfoStatus = NULL;
    130     if (NULL != drmInfo) {
    131         drmInfoStatus = getDrmManagerService()->processDrmInfo(uniqueId, drmInfo);
    132     }
    133     return drmInfoStatus;
    134 }
    135 
    136 DrmInfo* DrmManagerClientImpl::acquireDrmInfo(
    137         int uniqueId, const DrmInfoRequest* drmInfoRequest) {
    138     DrmInfo* drmInfo = NULL;
    139     if (NULL != drmInfoRequest) {
    140         drmInfo = getDrmManagerService()->acquireDrmInfo(uniqueId, drmInfoRequest);
    141     }
    142     return drmInfo;
    143 }
    144 
    145 status_t DrmManagerClientImpl::saveRights(int uniqueId, const DrmRights& drmRights,
    146             const String8& rightsPath, const String8& contentPath) {
    147     return getDrmManagerService()->saveRights(
    148                 uniqueId, drmRights, rightsPath, contentPath);
    149 }
    150 
    151 String8 DrmManagerClientImpl::getOriginalMimeType(
    152         int uniqueId, const String8& path, int fd) {
    153     String8 mimeType = EMPTY_STRING;
    154     if (EMPTY_STRING != path) {
    155         mimeType = getDrmManagerService()->getOriginalMimeType(uniqueId, path, fd);
    156     }
    157     return mimeType;
    158 }
    159 
    160 int DrmManagerClientImpl::getDrmObjectType(
    161             int uniqueId, const String8& path, const String8& mimeType) {
    162     int drmOjectType = DrmObjectType::UNKNOWN;
    163     if ((EMPTY_STRING != path) || (EMPTY_STRING != mimeType)) {
    164          drmOjectType =
    165              getDrmManagerService()->getDrmObjectType(uniqueId, path, mimeType);
    166     }
    167     return drmOjectType;
    168 }
    169 
    170 int DrmManagerClientImpl::checkRightsStatus(
    171             int uniqueId, const String8& path, int action) {
    172     int rightsStatus = RightsStatus::RIGHTS_INVALID;
    173     if (EMPTY_STRING != path) {
    174         rightsStatus =
    175             getDrmManagerService()->checkRightsStatus(uniqueId, path, action);
    176     }
    177     return rightsStatus;
    178 }
    179 
    180 status_t DrmManagerClientImpl::consumeRights(
    181             int uniqueId, sp<DecryptHandle> &decryptHandle,
    182             int action, bool reserve) {
    183     status_t status = DRM_ERROR_UNKNOWN;
    184     if (NULL != decryptHandle.get()) {
    185         status = getDrmManagerService()->consumeRights(
    186                 uniqueId, decryptHandle.get(), action, reserve);
    187     }
    188     return status;
    189 }
    190 
    191 status_t DrmManagerClientImpl::setPlaybackStatus(
    192             int uniqueId, sp<DecryptHandle> &decryptHandle,
    193             int playbackStatus, int64_t position) {
    194     status_t status = DRM_ERROR_UNKNOWN;
    195     if (NULL != decryptHandle.get()) {
    196         status = getDrmManagerService()->setPlaybackStatus(
    197                 uniqueId, decryptHandle.get(), playbackStatus, position);
    198     }
    199     return status;
    200 }
    201 
    202 bool DrmManagerClientImpl::validateAction(
    203             int uniqueId, const String8& path,
    204             int action, const ActionDescription& description) {
    205     bool retCode = false;
    206     if (EMPTY_STRING != path) {
    207         retCode = getDrmManagerService()->validateAction(
    208                 uniqueId, path, action, description);
    209     }
    210     return retCode;
    211 }
    212 
    213 status_t DrmManagerClientImpl::removeRights(int uniqueId, const String8& path) {
    214     status_t status = DRM_ERROR_UNKNOWN;
    215     if (EMPTY_STRING != path) {
    216         status = getDrmManagerService()->removeRights(uniqueId, path);
    217     }
    218     return status;
    219 }
    220 
    221 status_t DrmManagerClientImpl::removeAllRights(int uniqueId) {
    222     return getDrmManagerService()->removeAllRights(uniqueId);
    223 }
    224 
    225 int DrmManagerClientImpl::openConvertSession(
    226         int uniqueId, const String8& mimeType) {
    227     int retCode = INVALID_VALUE;
    228     if (EMPTY_STRING != mimeType) {
    229         retCode = getDrmManagerService()->openConvertSession(uniqueId, mimeType);
    230     }
    231     return retCode;
    232 }
    233 
    234 DrmConvertedStatus* DrmManagerClientImpl::convertData(
    235             int uniqueId, int convertId, const DrmBuffer* inputData) {
    236     DrmConvertedStatus* drmConvertedStatus = NULL;
    237     if (NULL != inputData) {
    238          drmConvertedStatus =
    239              getDrmManagerService()->convertData(uniqueId, convertId, inputData);
    240     }
    241     return drmConvertedStatus;
    242 }
    243 
    244 DrmConvertedStatus* DrmManagerClientImpl::closeConvertSession(
    245         int uniqueId, int convertId) {
    246     return getDrmManagerService()->closeConvertSession(uniqueId, convertId);
    247 }
    248 
    249 status_t DrmManagerClientImpl::getAllSupportInfo(
    250             int uniqueId, int* length, DrmSupportInfo** drmSupportInfoArray) {
    251     status_t status = DRM_ERROR_UNKNOWN;
    252     if ((NULL != drmSupportInfoArray) && (NULL != length)) {
    253         status = getDrmManagerService()->getAllSupportInfo(
    254                 uniqueId, length, drmSupportInfoArray);
    255     }
    256     return status;
    257 }
    258 
    259 sp<DecryptHandle> DrmManagerClientImpl::openDecryptSession(
    260             int uniqueId, int fd, off64_t offset,
    261             off64_t length, const char* mime) {
    262 
    263     return getDrmManagerService()->openDecryptSession(
    264                 uniqueId, fd, offset, length, mime);
    265 }
    266 
    267 sp<DecryptHandle> DrmManagerClientImpl::openDecryptSession(
    268         int uniqueId, const char* uri, const char* mime) {
    269 
    270     DecryptHandle* handle = NULL;
    271     if (NULL != uri) {
    272         handle = getDrmManagerService()->openDecryptSession(uniqueId, uri, mime);
    273     }
    274     return handle;
    275 }
    276 
    277 sp<DecryptHandle> DrmManagerClientImpl::openDecryptSession(
    278             int uniqueId, const DrmBuffer& buf, const String8& mimeType) {
    279     return getDrmManagerService()->openDecryptSession(uniqueId, buf, mimeType);
    280 }
    281 
    282 status_t DrmManagerClientImpl::closeDecryptSession(
    283         int uniqueId, sp<DecryptHandle> &decryptHandle) {
    284     status_t status = DRM_ERROR_UNKNOWN;
    285     if (NULL != decryptHandle.get()) {
    286         status = getDrmManagerService()->closeDecryptSession(
    287                 uniqueId, decryptHandle.get());
    288     }
    289     return status;
    290 }
    291 
    292 status_t DrmManagerClientImpl::initializeDecryptUnit(
    293         int uniqueId, sp<DecryptHandle> &decryptHandle,
    294         int decryptUnitId, const DrmBuffer* headerInfo) {
    295     status_t status = DRM_ERROR_UNKNOWN;
    296     if ((NULL != decryptHandle.get()) && (NULL != headerInfo)) {
    297         status = getDrmManagerService()->initializeDecryptUnit(
    298                 uniqueId, decryptHandle.get(), decryptUnitId, headerInfo);
    299     }
    300     return status;
    301 }
    302 
    303 status_t DrmManagerClientImpl::decrypt(
    304         int uniqueId, sp<DecryptHandle> &decryptHandle,
    305         int decryptUnitId, const DrmBuffer* encBuffer,
    306         DrmBuffer** decBuffer, DrmBuffer* IV) {
    307     status_t status = DRM_ERROR_UNKNOWN;
    308     if ((NULL != decryptHandle.get()) && (NULL != encBuffer)
    309         && (NULL != decBuffer) && (NULL != *decBuffer)) {
    310         status = getDrmManagerService()->decrypt(
    311                 uniqueId, decryptHandle.get(), decryptUnitId,
    312                 encBuffer, decBuffer, IV);
    313     }
    314     return status;
    315 }
    316 
    317 status_t DrmManagerClientImpl::finalizeDecryptUnit(
    318             int uniqueId, sp<DecryptHandle> &decryptHandle, int decryptUnitId) {
    319     status_t status = DRM_ERROR_UNKNOWN;
    320     if (NULL != decryptHandle.get()) {
    321         status = getDrmManagerService()->finalizeDecryptUnit(
    322                     uniqueId, decryptHandle.get(), decryptUnitId);
    323     }
    324     return status;
    325 }
    326 
    327 ssize_t DrmManagerClientImpl::pread(int uniqueId, sp<DecryptHandle> &decryptHandle,
    328             void* buffer, ssize_t numBytes, off64_t offset) {
    329     ssize_t retCode = INVALID_VALUE;
    330     if ((NULL != decryptHandle.get()) && (NULL != buffer) && (0 < numBytes)) {
    331         retCode = getDrmManagerService()->pread(
    332                 uniqueId, decryptHandle.get(), buffer, numBytes, offset);
    333     }
    334     return retCode;
    335 }
    336 
    337 status_t DrmManagerClientImpl::notify(const DrmInfoEvent& event) {
    338     if (NULL != mOnInfoListener.get()) {
    339         Mutex::Autolock _l(mLock);
    340         sp<DrmManagerClient::OnInfoListener> listener = mOnInfoListener;
    341         listener->onInfo(event);
    342     }
    343     return DRM_NO_ERROR;
    344 }
    345 
    346 DrmManagerClientImpl::DeathNotifier::~DeathNotifier() {
    347     Mutex::Autolock lock(sMutex);
    348     if (NULL != sDrmManagerService.get()) {
    349         IInterface::asBinder(sDrmManagerService)->unlinkToDeath(this);
    350     }
    351 }
    352 
    353 void DrmManagerClientImpl::DeathNotifier::binderDied(
    354             const wp<IBinder>& /* who */) {
    355     Mutex::Autolock lock(sMutex);
    356     DrmManagerClientImpl::sDrmManagerService.clear();
    357     ALOGW("DrmManager server died!");
    358 }
    359 
    360