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android_frameworks_base/drm/drmserver/DrmManager.cpp
James Dong d70c64db9f Revert the following patches because they may lead to power regression because SHA/MD5 module is stuck 
1. Revert "Fix drm flag setting missed in false drm recognition fix."
   This reverts commit 9f704f6c46a171357e49c411c83458b9d4565f3b.

2. Revert "Fixed the false drm recognition."
   This reverts commit aadbd80b307c817698ce5110ff8e002804d1b230.

3. Revert "Fix drm enumeration order, resolves failure to play forward lock ringtones"
   This reverts commit a5cbf023e349f2394ba6fc58d73b4375cfec4369.

4. Revert "Fix ANRs due to Widevine DRM plugin sniff taking too long."
   This reverts commit d0d19db1ca1c289b069db33f4665bcb9386064e9.

As a result of the reverting, many ANRs from WV sniffing are back.

related-to-bug: 5739618
2011-12-14 11:01:59 -08:00

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/*
* Copyright (C) 2010 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
//#define LOG_NDEBUG 0
#define LOG_TAG "DrmManager(Native)"
#include "utils/Log.h"
#include <utils/String8.h>
#include <drm/DrmInfo.h>
#include <drm/DrmInfoEvent.h>
#include <drm/DrmRights.h>
#include <drm/DrmConstraints.h>
#include <drm/DrmMetadata.h>
#include <drm/DrmInfoStatus.h>
#include <drm/DrmInfoRequest.h>
#include <drm/DrmSupportInfo.h>
#include <drm/DrmConvertedStatus.h>
#include <IDrmEngine.h>
#include "DrmManager.h"
#include "ReadWriteUtils.h"
#define DECRYPT_FILE_ERROR -1
using namespace android;
const String8 DrmManager::EMPTY_STRING("");
DrmManager::DrmManager() :
mDecryptSessionId(0),
mConvertId(0) {
}
DrmManager::~DrmManager() {
}
int DrmManager::addUniqueId(bool isNative) {
Mutex::Autolock _l(mLock);
int temp = 0;
bool foundUniqueId = false;
const int size = mUniqueIdVector.size();
const int uniqueIdRange = 0xfff;
int maxLoopTimes = (uniqueIdRange - 1) / 2;
srand(time(NULL));
while (!foundUniqueId) {
temp = rand() & uniqueIdRange;
if (isNative) {
// set a flag to differentiate DrmManagerClient
// created from native side and java side
temp |= 0x1000;
}
int index = 0;
for (; index < size; ++index) {
if (mUniqueIdVector.itemAt(index) == temp) {
foundUniqueId = false;
break;
}
}
if (index == size) {
foundUniqueId = true;
}
maxLoopTimes --;
LOG_FATAL_IF(maxLoopTimes <= 0, "cannot find an unique ID for this session");
}
mUniqueIdVector.push(temp);
return temp;
}
void DrmManager::removeUniqueId(int uniqueId) {
Mutex::Autolock _l(mLock);
for (unsigned int i = 0; i < mUniqueIdVector.size(); i++) {
if (uniqueId == mUniqueIdVector.itemAt(i)) {
mUniqueIdVector.removeAt(i);
break;
}
}
}
status_t DrmManager::loadPlugIns() {
String8 vendorPluginDirPath("/vendor/lib/drm");
loadPlugIns(vendorPluginDirPath);
String8 pluginDirPath("/system/lib/drm");
loadPlugIns(pluginDirPath);
return DRM_NO_ERROR;
}
status_t DrmManager::loadPlugIns(const String8& plugInDirPath) {
mPlugInManager.loadPlugIns(plugInDirPath);
Vector<String8> plugInPathList = mPlugInManager.getPlugInIdList();
for (unsigned int i = 0; i < plugInPathList.size(); ++i) {
String8 plugInPath = plugInPathList[i];
DrmSupportInfo* info = mPlugInManager.getPlugIn(plugInPath).getSupportInfo(0);
if (NULL != info) {
if (mSupportInfoToPlugInIdMap.indexOfKey(*info) < 0) {
mSupportInfoToPlugInIdMap.add(*info, plugInPath);
}
delete info;
}
}
return DRM_NO_ERROR;
}
status_t DrmManager::unloadPlugIns() {
Mutex::Autolock _l(mLock);
mConvertSessionMap.clear();
mDecryptSessionMap.clear();
mPlugInManager.unloadPlugIns();
mSupportInfoToPlugInIdMap.clear();
return DRM_NO_ERROR;
}
status_t DrmManager::setDrmServiceListener(
int uniqueId, const sp<IDrmServiceListener>& drmServiceListener) {
Mutex::Autolock _l(mListenerLock);
if (NULL != drmServiceListener.get()) {
mServiceListeners.add(uniqueId, drmServiceListener);
} else {
mServiceListeners.removeItem(uniqueId);
}
return DRM_NO_ERROR;
}
void DrmManager::addClient(int uniqueId) {
Mutex::Autolock _l(mLock);
if (!mSupportInfoToPlugInIdMap.isEmpty()) {
Vector<String8> plugInIdList = mPlugInManager.getPlugInIdList();
for (unsigned int index = 0; index < plugInIdList.size(); index++) {
IDrmEngine& rDrmEngine = mPlugInManager.getPlugIn(plugInIdList.itemAt(index));
rDrmEngine.initialize(uniqueId);
rDrmEngine.setOnInfoListener(uniqueId, this);
}
}
}
void DrmManager::removeClient(int uniqueId) {
Mutex::Autolock _l(mLock);
Vector<String8> plugInIdList = mPlugInManager.getPlugInIdList();
for (unsigned int index = 0; index < plugInIdList.size(); index++) {
IDrmEngine& rDrmEngine = mPlugInManager.getPlugIn(plugInIdList.itemAt(index));
rDrmEngine.terminate(uniqueId);
}
}
DrmConstraints* DrmManager::getConstraints(int uniqueId, const String8* path, const int action) {
Mutex::Autolock _l(mLock);
const String8 plugInId = getSupportedPlugInIdFromPath(uniqueId, *path);
if (EMPTY_STRING != plugInId) {
IDrmEngine& rDrmEngine = mPlugInManager.getPlugIn(plugInId);
return rDrmEngine.getConstraints(uniqueId, path, action);
}
return NULL;
}
DrmMetadata* DrmManager::getMetadata(int uniqueId, const String8* path) {
Mutex::Autolock _l(mLock);
const String8 plugInId = getSupportedPlugInIdFromPath(uniqueId, *path);
if (EMPTY_STRING != plugInId) {
IDrmEngine& rDrmEngine = mPlugInManager.getPlugIn(plugInId);
return rDrmEngine.getMetadata(uniqueId, path);
}
return NULL;
}
status_t DrmManager::installDrmEngine(int uniqueId, const String8& absolutePath) {
Mutex::Autolock _l(mLock);
mPlugInManager.loadPlugIn(absolutePath);
IDrmEngine& rDrmEngine = mPlugInManager.getPlugIn(absolutePath);
rDrmEngine.initialize(uniqueId);
rDrmEngine.setOnInfoListener(uniqueId, this);
DrmSupportInfo* info = rDrmEngine.getSupportInfo(0);
mSupportInfoToPlugInIdMap.add(*info, absolutePath);
delete info;
return DRM_NO_ERROR;
}
bool DrmManager::canHandle(int uniqueId, const String8& path, const String8& mimeType) {
Mutex::Autolock _l(mLock);
const String8 plugInId = getSupportedPlugInId(mimeType);
bool result = (EMPTY_STRING != plugInId) ? true : false;
if (0 < path.length()) {
if (result) {
IDrmEngine& rDrmEngine = mPlugInManager.getPlugIn(plugInId);
result = rDrmEngine.canHandle(uniqueId, path);
} else {
String8 extension = path.getPathExtension();
if (String8("") != extension) {
result = canHandle(uniqueId, path);
}
}
}
return result;
}
DrmInfoStatus* DrmManager::processDrmInfo(int uniqueId, const DrmInfo* drmInfo) {
Mutex::Autolock _l(mLock);
const String8 plugInId = getSupportedPlugInId(drmInfo->getMimeType());
if (EMPTY_STRING != plugInId) {
IDrmEngine& rDrmEngine = mPlugInManager.getPlugIn(plugInId);
return rDrmEngine.processDrmInfo(uniqueId, drmInfo);
}
return NULL;
}
bool DrmManager::canHandle(int uniqueId, const String8& path) {
bool result = false;
Vector<String8> plugInPathList = mPlugInManager.getPlugInIdList();
for (unsigned int i = 0; i < plugInPathList.size(); ++i) {
IDrmEngine& rDrmEngine = mPlugInManager.getPlugIn(plugInPathList[i]);
result = rDrmEngine.canHandle(uniqueId, path);
if (result) {
break;
}
}
return result;
}
DrmInfo* DrmManager::acquireDrmInfo(int uniqueId, const DrmInfoRequest* drmInfoRequest) {
Mutex::Autolock _l(mLock);
const String8 plugInId = getSupportedPlugInId(drmInfoRequest->getMimeType());
if (EMPTY_STRING != plugInId) {
IDrmEngine& rDrmEngine = mPlugInManager.getPlugIn(plugInId);
return rDrmEngine.acquireDrmInfo(uniqueId, drmInfoRequest);
}
return NULL;
}
status_t DrmManager::saveRights(int uniqueId, const DrmRights& drmRights,
const String8& rightsPath, const String8& contentPath) {
Mutex::Autolock _l(mLock);
const String8 plugInId = getSupportedPlugInId(drmRights.getMimeType());
status_t result = DRM_ERROR_UNKNOWN;
if (EMPTY_STRING != plugInId) {
IDrmEngine& rDrmEngine = mPlugInManager.getPlugIn(plugInId);
result = rDrmEngine.saveRights(uniqueId, drmRights, rightsPath, contentPath);
}
return result;
}
String8 DrmManager::getOriginalMimeType(int uniqueId, const String8& path) {
Mutex::Autolock _l(mLock);
const String8 plugInId = getSupportedPlugInIdFromPath(uniqueId, path);
if (EMPTY_STRING != plugInId) {
IDrmEngine& rDrmEngine = mPlugInManager.getPlugIn(plugInId);
return rDrmEngine.getOriginalMimeType(uniqueId, path);
}
return EMPTY_STRING;
}
int DrmManager::getDrmObjectType(int uniqueId, const String8& path, const String8& mimeType) {
Mutex::Autolock _l(mLock);
const String8 plugInId = getSupportedPlugInId(uniqueId, path, mimeType);
if (EMPTY_STRING != plugInId) {
IDrmEngine& rDrmEngine = mPlugInManager.getPlugIn(plugInId);
return rDrmEngine.getDrmObjectType(uniqueId, path, mimeType);
}
return DrmObjectType::UNKNOWN;
}
int DrmManager::checkRightsStatus(int uniqueId, const String8& path, int action) {
Mutex::Autolock _l(mLock);
const String8 plugInId = getSupportedPlugInIdFromPath(uniqueId, path);
if (EMPTY_STRING != plugInId) {
IDrmEngine& rDrmEngine = mPlugInManager.getPlugIn(plugInId);
return rDrmEngine.checkRightsStatus(uniqueId, path, action);
}
return RightsStatus::RIGHTS_INVALID;
}
status_t DrmManager::consumeRights(
int uniqueId, DecryptHandle* decryptHandle, int action, bool reserve) {
status_t result = DRM_ERROR_UNKNOWN;
Mutex::Autolock _l(mDecryptLock);
if (mDecryptSessionMap.indexOfKey(decryptHandle->decryptId) != NAME_NOT_FOUND) {
IDrmEngine* drmEngine = mDecryptSessionMap.valueFor(decryptHandle->decryptId);
result = drmEngine->consumeRights(uniqueId, decryptHandle, action, reserve);
}
return result;
}
status_t DrmManager::setPlaybackStatus(
int uniqueId, DecryptHandle* decryptHandle, int playbackStatus, int64_t position) {
status_t result = DRM_ERROR_UNKNOWN;
Mutex::Autolock _l(mDecryptLock);
if (mDecryptSessionMap.indexOfKey(decryptHandle->decryptId) != NAME_NOT_FOUND) {
IDrmEngine* drmEngine = mDecryptSessionMap.valueFor(decryptHandle->decryptId);
result = drmEngine->setPlaybackStatus(uniqueId, decryptHandle, playbackStatus, position);
}
return result;
}
bool DrmManager::validateAction(
int uniqueId, const String8& path, int action, const ActionDescription& description) {
Mutex::Autolock _l(mLock);
const String8 plugInId = getSupportedPlugInIdFromPath(uniqueId, path);
if (EMPTY_STRING != plugInId) {
IDrmEngine& rDrmEngine = mPlugInManager.getPlugIn(plugInId);
return rDrmEngine.validateAction(uniqueId, path, action, description);
}
return false;
}
status_t DrmManager::removeRights(int uniqueId, const String8& path) {
Mutex::Autolock _l(mLock);
const String8 plugInId = getSupportedPlugInIdFromPath(uniqueId, path);
status_t result = DRM_ERROR_UNKNOWN;
if (EMPTY_STRING != plugInId) {
IDrmEngine& rDrmEngine = mPlugInManager.getPlugIn(plugInId);
result = rDrmEngine.removeRights(uniqueId, path);
}
return result;
}
status_t DrmManager::removeAllRights(int uniqueId) {
Vector<String8> plugInIdList = mPlugInManager.getPlugInIdList();
status_t result = DRM_ERROR_UNKNOWN;
for (unsigned int index = 0; index < plugInIdList.size(); index++) {
IDrmEngine& rDrmEngine = mPlugInManager.getPlugIn(plugInIdList.itemAt(index));
result = rDrmEngine.removeAllRights(uniqueId);
if (DRM_NO_ERROR != result) {
break;
}
}
return result;
}
int DrmManager::openConvertSession(int uniqueId, const String8& mimeType) {
Mutex::Autolock _l(mConvertLock);
int convertId = -1;
const String8 plugInId = getSupportedPlugInId(mimeType);
if (EMPTY_STRING != plugInId) {
IDrmEngine& rDrmEngine = mPlugInManager.getPlugIn(plugInId);
if (DRM_NO_ERROR == rDrmEngine.openConvertSession(uniqueId, mConvertId + 1)) {
++mConvertId;
convertId = mConvertId;
mConvertSessionMap.add(convertId, &rDrmEngine);
}
}
return convertId;
}
DrmConvertedStatus* DrmManager::convertData(
int uniqueId, int convertId, const DrmBuffer* inputData) {
DrmConvertedStatus *drmConvertedStatus = NULL;
Mutex::Autolock _l(mConvertLock);
if (mConvertSessionMap.indexOfKey(convertId) != NAME_NOT_FOUND) {
IDrmEngine* drmEngine = mConvertSessionMap.valueFor(convertId);
drmConvertedStatus = drmEngine->convertData(uniqueId, convertId, inputData);
}
return drmConvertedStatus;
}
DrmConvertedStatus* DrmManager::closeConvertSession(int uniqueId, int convertId) {
Mutex::Autolock _l(mConvertLock);
DrmConvertedStatus *drmConvertedStatus = NULL;
if (mConvertSessionMap.indexOfKey(convertId) != NAME_NOT_FOUND) {
IDrmEngine* drmEngine = mConvertSessionMap.valueFor(convertId);
drmConvertedStatus = drmEngine->closeConvertSession(uniqueId, convertId);
mConvertSessionMap.removeItem(convertId);
}
return drmConvertedStatus;
}
status_t DrmManager::getAllSupportInfo(
int uniqueId, int* length, DrmSupportInfo** drmSupportInfoArray) {
Mutex::Autolock _l(mLock);
Vector<String8> plugInPathList = mPlugInManager.getPlugInIdList();
int size = plugInPathList.size();
int validPlugins = 0;
if (0 < size) {
Vector<DrmSupportInfo> drmSupportInfoList;
for (int i = 0; i < size; ++i) {
String8 plugInPath = plugInPathList[i];
DrmSupportInfo* drmSupportInfo
= mPlugInManager.getPlugIn(plugInPath).getSupportInfo(0);
if (NULL != drmSupportInfo) {
drmSupportInfoList.add(*drmSupportInfo);
delete drmSupportInfo; drmSupportInfo = NULL;
}
}
validPlugins = drmSupportInfoList.size();
if (0 < validPlugins) {
*drmSupportInfoArray = new DrmSupportInfo[validPlugins];
for (int i = 0; i < validPlugins; ++i) {
(*drmSupportInfoArray)[i] = drmSupportInfoList[i];
}
}
}
*length = validPlugins;
return DRM_NO_ERROR;
}
DecryptHandle* DrmManager::openDecryptSession(int uniqueId, int fd, off64_t offset, off64_t length) {
Mutex::Autolock _l(mDecryptLock);
status_t result = DRM_ERROR_CANNOT_HANDLE;
Vector<String8> plugInIdList = mPlugInManager.getPlugInIdList();
DecryptHandle* handle = new DecryptHandle();
if (NULL != handle) {
handle->decryptId = mDecryptSessionId + 1;
for (unsigned int index = 0; index < plugInIdList.size(); index++) {
String8 plugInId = plugInIdList.itemAt(index);
IDrmEngine& rDrmEngine = mPlugInManager.getPlugIn(plugInId);
result = rDrmEngine.openDecryptSession(uniqueId, handle, fd, offset, length);
if (DRM_NO_ERROR == result) {
++mDecryptSessionId;
mDecryptSessionMap.add(mDecryptSessionId, &rDrmEngine);
break;
}
}
}
if (DRM_NO_ERROR != result) {
delete handle; handle = NULL;
}
return handle;
}
DecryptHandle* DrmManager::openDecryptSession(int uniqueId, const char* uri) {
Mutex::Autolock _l(mDecryptLock);
status_t result = DRM_ERROR_CANNOT_HANDLE;
Vector<String8> plugInIdList = mPlugInManager.getPlugInIdList();
DecryptHandle* handle = new DecryptHandle();
if (NULL != handle) {
handle->decryptId = mDecryptSessionId + 1;
for (unsigned int index = 0; index < plugInIdList.size(); index++) {
String8 plugInId = plugInIdList.itemAt(index);
IDrmEngine& rDrmEngine = mPlugInManager.getPlugIn(plugInId);
result = rDrmEngine.openDecryptSession(uniqueId, handle, uri);
if (DRM_NO_ERROR == result) {
++mDecryptSessionId;
mDecryptSessionMap.add(mDecryptSessionId, &rDrmEngine);
break;
}
}
}
if (DRM_NO_ERROR != result) {
delete handle; handle = NULL;
LOGV("DrmManager::openDecryptSession: no capable plug-in found");
}
return handle;
}
status_t DrmManager::closeDecryptSession(int uniqueId, DecryptHandle* decryptHandle) {
Mutex::Autolock _l(mDecryptLock);
status_t result = DRM_ERROR_UNKNOWN;
if (mDecryptSessionMap.indexOfKey(decryptHandle->decryptId) != NAME_NOT_FOUND) {
IDrmEngine* drmEngine = mDecryptSessionMap.valueFor(decryptHandle->decryptId);
result = drmEngine->closeDecryptSession(uniqueId, decryptHandle);
if (DRM_NO_ERROR == result) {
mDecryptSessionMap.removeItem(decryptHandle->decryptId);
}
}
return result;
}
status_t DrmManager::initializeDecryptUnit(
int uniqueId, DecryptHandle* decryptHandle, int decryptUnitId, const DrmBuffer* headerInfo) {
status_t result = DRM_ERROR_UNKNOWN;
Mutex::Autolock _l(mDecryptLock);
if (mDecryptSessionMap.indexOfKey(decryptHandle->decryptId) != NAME_NOT_FOUND) {
IDrmEngine* drmEngine = mDecryptSessionMap.valueFor(decryptHandle->decryptId);
result = drmEngine->initializeDecryptUnit(uniqueId, decryptHandle, decryptUnitId, headerInfo);
}
return result;
}
status_t DrmManager::decrypt(int uniqueId, DecryptHandle* decryptHandle, int decryptUnitId,
const DrmBuffer* encBuffer, DrmBuffer** decBuffer, DrmBuffer* IV) {
status_t result = DRM_ERROR_UNKNOWN;
Mutex::Autolock _l(mDecryptLock);
if (mDecryptSessionMap.indexOfKey(decryptHandle->decryptId) != NAME_NOT_FOUND) {
IDrmEngine* drmEngine = mDecryptSessionMap.valueFor(decryptHandle->decryptId);
result = drmEngine->decrypt(
uniqueId, decryptHandle, decryptUnitId, encBuffer, decBuffer, IV);
}
return result;
}
status_t DrmManager::finalizeDecryptUnit(
int uniqueId, DecryptHandle* decryptHandle, int decryptUnitId) {
status_t result = DRM_ERROR_UNKNOWN;
Mutex::Autolock _l(mDecryptLock);
if (mDecryptSessionMap.indexOfKey(decryptHandle->decryptId) != NAME_NOT_FOUND) {
IDrmEngine* drmEngine = mDecryptSessionMap.valueFor(decryptHandle->decryptId);
result = drmEngine->finalizeDecryptUnit(uniqueId, decryptHandle, decryptUnitId);
}
return result;
}
ssize_t DrmManager::pread(int uniqueId, DecryptHandle* decryptHandle,
void* buffer, ssize_t numBytes, off64_t offset) {
ssize_t result = DECRYPT_FILE_ERROR;
Mutex::Autolock _l(mDecryptLock);
if (mDecryptSessionMap.indexOfKey(decryptHandle->decryptId) != NAME_NOT_FOUND) {
IDrmEngine* drmEngine = mDecryptSessionMap.valueFor(decryptHandle->decryptId);
result = drmEngine->pread(uniqueId, decryptHandle, buffer, numBytes, offset);
}
return result;
}
String8 DrmManager::getSupportedPlugInId(
int uniqueId, const String8& path, const String8& mimeType) {
String8 plugInId("");
if (EMPTY_STRING != mimeType) {
plugInId = getSupportedPlugInId(mimeType);
} else {
plugInId = getSupportedPlugInIdFromPath(uniqueId, path);
}
return plugInId;
}
String8 DrmManager::getSupportedPlugInId(const String8& mimeType) {
String8 plugInId("");
if (EMPTY_STRING != mimeType) {
for (unsigned int index = 0; index < mSupportInfoToPlugInIdMap.size(); index++) {
const DrmSupportInfo& drmSupportInfo = mSupportInfoToPlugInIdMap.keyAt(index);
if (drmSupportInfo.isSupportedMimeType(mimeType)) {
plugInId = mSupportInfoToPlugInIdMap.valueFor(drmSupportInfo);
break;
}
}
}
return plugInId;
}
String8 DrmManager::getSupportedPlugInIdFromPath(int uniqueId, const String8& path) {
String8 plugInId("");
const String8 fileSuffix = path.getPathExtension();
for (unsigned int index = 0; index < mSupportInfoToPlugInIdMap.size(); index++) {
const DrmSupportInfo& drmSupportInfo = mSupportInfoToPlugInIdMap.keyAt(index);
if (drmSupportInfo.isSupportedFileSuffix(fileSuffix)) {
String8 key = mSupportInfoToPlugInIdMap.valueFor(drmSupportInfo);
IDrmEngine& drmEngine = mPlugInManager.getPlugIn(key);
if (drmEngine.canHandle(uniqueId, path)) {
plugInId = key;
break;
}
}
}
return plugInId;
}
void DrmManager::onInfo(const DrmInfoEvent& event) {
Mutex::Autolock _l(mListenerLock);
for (unsigned int index = 0; index < mServiceListeners.size(); index++) {
int uniqueId = mServiceListeners.keyAt(index);
if (uniqueId == event.getUniqueId()) {
sp<IDrmServiceListener> serviceListener = mServiceListeners.valueFor(uniqueId);
serviceListener->notify(event);
}
}
}
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