| /* |
| * Copyright (C) 2013 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 "Drm" |
| #include <utils/Log.h> |
| |
| #include <dirent.h> |
| #include <dlfcn.h> |
| |
| #include "Drm.h" |
| |
| #include <media/drm/DrmAPI.h> |
| #include <media/stagefright/foundation/ADebug.h> |
| #include <media/stagefright/foundation/AString.h> |
| #include <media/stagefright/foundation/hexdump.h> |
| #include <media/stagefright/MediaErrors.h> |
| |
| namespace android { |
| |
| KeyedVector<Vector<uint8_t>, String8> Drm::mUUIDToLibraryPathMap; |
| KeyedVector<String8, wp<SharedLibrary> > Drm::mLibraryPathToOpenLibraryMap; |
| Mutex Drm::mMapLock; |
| |
| static bool operator<(const Vector<uint8_t> &lhs, const Vector<uint8_t> &rhs) { |
| if (lhs.size() < rhs.size()) { |
| return true; |
| } else if (lhs.size() > rhs.size()) { |
| return false; |
| } |
| |
| return memcmp((void *)lhs.array(), (void *)rhs.array(), rhs.size()) < 0; |
| } |
| |
| Drm::Drm() |
| : mInitCheck(NO_INIT), |
| mListener(NULL), |
| mFactory(NULL), |
| mPlugin(NULL) { |
| } |
| |
| Drm::~Drm() { |
| delete mPlugin; |
| mPlugin = NULL; |
| closeFactory(); |
| } |
| |
| void Drm::closeFactory() { |
| delete mFactory; |
| mFactory = NULL; |
| mLibrary.clear(); |
| } |
| |
| status_t Drm::initCheck() const { |
| return mInitCheck; |
| } |
| |
| status_t Drm::setListener(const sp<IDrmClient>& listener) |
| { |
| Mutex::Autolock lock(mEventLock); |
| mListener = listener; |
| return NO_ERROR; |
| } |
| |
| void Drm::sendEvent(DrmPlugin::EventType eventType, int extra, |
| Vector<uint8_t> const *sessionId, |
| Vector<uint8_t> const *data) |
| { |
| mEventLock.lock(); |
| sp<IDrmClient> listener = mListener; |
| mEventLock.unlock(); |
| |
| if (listener != NULL) { |
| Parcel obj; |
| if (sessionId && sessionId->size()) { |
| obj.writeInt32(sessionId->size()); |
| obj.write(sessionId->array(), sessionId->size()); |
| } else { |
| obj.writeInt32(0); |
| } |
| |
| if (data && data->size()) { |
| obj.writeInt32(data->size()); |
| obj.write(data->array(), data->size()); |
| } else { |
| obj.writeInt32(0); |
| } |
| |
| Mutex::Autolock lock(mNotifyLock); |
| listener->notify(eventType, extra, &obj); |
| } |
| } |
| |
| /* |
| * Search the plugins directory for a plugin that supports the scheme |
| * specified by uuid |
| * |
| * If found: |
| * mLibrary holds a strong pointer to the dlopen'd library |
| * mFactory is set to the library's factory method |
| * mInitCheck is set to OK |
| * |
| * If not found: |
| * mLibrary is cleared and mFactory are set to NULL |
| * mInitCheck is set to an error (!OK) |
| */ |
| void Drm::findFactoryForScheme(const uint8_t uuid[16]) { |
| |
| closeFactory(); |
| |
| // lock static maps |
| Mutex::Autolock autoLock(mMapLock); |
| |
| // first check cache |
| Vector<uint8_t> uuidVector; |
| uuidVector.appendArray(uuid, sizeof(uuid)); |
| ssize_t index = mUUIDToLibraryPathMap.indexOfKey(uuidVector); |
| if (index >= 0) { |
| if (loadLibraryForScheme(mUUIDToLibraryPathMap[index], uuid)) { |
| mInitCheck = OK; |
| return; |
| } else { |
| ALOGE("Failed to load from cached library path!"); |
| mInitCheck = ERROR_UNSUPPORTED; |
| return; |
| } |
| } |
| |
| // no luck, have to search |
| String8 dirPath("/vendor/lib/mediadrm"); |
| DIR* pDir = opendir(dirPath.string()); |
| |
| if (pDir == NULL) { |
| mInitCheck = ERROR_UNSUPPORTED; |
| ALOGE("Failed to open plugin directory %s", dirPath.string()); |
| return; |
| } |
| |
| |
| struct dirent* pEntry; |
| while ((pEntry = readdir(pDir))) { |
| |
| String8 pluginPath = dirPath + "/" + pEntry->d_name; |
| |
| if (pluginPath.getPathExtension() == ".so") { |
| |
| if (loadLibraryForScheme(pluginPath, uuid)) { |
| mUUIDToLibraryPathMap.add(uuidVector, pluginPath); |
| mInitCheck = OK; |
| closedir(pDir); |
| return; |
| } |
| } |
| } |
| |
| closedir(pDir); |
| |
| ALOGE("Failed to find drm plugin"); |
| mInitCheck = ERROR_UNSUPPORTED; |
| } |
| |
| bool Drm::loadLibraryForScheme(const String8 &path, const uint8_t uuid[16]) { |
| |
| // get strong pointer to open shared library |
| ssize_t index = mLibraryPathToOpenLibraryMap.indexOfKey(path); |
| if (index >= 0) { |
| mLibrary = mLibraryPathToOpenLibraryMap[index].promote(); |
| } else { |
| index = mLibraryPathToOpenLibraryMap.add(path, NULL); |
| } |
| |
| if (!mLibrary.get()) { |
| mLibrary = new SharedLibrary(path); |
| if (!*mLibrary) { |
| return false; |
| } |
| |
| mLibraryPathToOpenLibraryMap.replaceValueAt(index, mLibrary); |
| } |
| |
| typedef DrmFactory *(*CreateDrmFactoryFunc)(); |
| |
| CreateDrmFactoryFunc createDrmFactory = |
| (CreateDrmFactoryFunc)mLibrary->lookup("createDrmFactory"); |
| |
| if (createDrmFactory == NULL || |
| (mFactory = createDrmFactory()) == NULL || |
| !mFactory->isCryptoSchemeSupported(uuid)) { |
| closeFactory(); |
| return false; |
| } |
| return true; |
| } |
| |
| bool Drm::isCryptoSchemeSupported(const uint8_t uuid[16]) { |
| Mutex::Autolock autoLock(mLock); |
| |
| if (mFactory && mFactory->isCryptoSchemeSupported(uuid)) { |
| return true; |
| } |
| |
| findFactoryForScheme(uuid); |
| return (mInitCheck == OK); |
| } |
| |
| status_t Drm::createPlugin(const uint8_t uuid[16]) { |
| Mutex::Autolock autoLock(mLock); |
| |
| if (mPlugin != NULL) { |
| return -EINVAL; |
| } |
| |
| if (!mFactory || !mFactory->isCryptoSchemeSupported(uuid)) { |
| findFactoryForScheme(uuid); |
| } |
| |
| if (mInitCheck != OK) { |
| return mInitCheck; |
| } |
| |
| status_t result = mFactory->createDrmPlugin(uuid, &mPlugin); |
| mPlugin->setListener(this); |
| return result; |
| } |
| |
| status_t Drm::destroyPlugin() { |
| Mutex::Autolock autoLock(mLock); |
| |
| if (mInitCheck != OK) { |
| return mInitCheck; |
| } |
| |
| if (mPlugin == NULL) { |
| return -EINVAL; |
| } |
| |
| delete mPlugin; |
| mPlugin = NULL; |
| |
| return OK; |
| } |
| |
| status_t Drm::openSession(Vector<uint8_t> &sessionId) { |
| Mutex::Autolock autoLock(mLock); |
| |
| if (mInitCheck != OK) { |
| return mInitCheck; |
| } |
| |
| if (mPlugin == NULL) { |
| return -EINVAL; |
| } |
| |
| return mPlugin->openSession(sessionId); |
| } |
| |
| status_t Drm::closeSession(Vector<uint8_t> const &sessionId) { |
| Mutex::Autolock autoLock(mLock); |
| |
| if (mInitCheck != OK) { |
| return mInitCheck; |
| } |
| |
| if (mPlugin == NULL) { |
| return -EINVAL; |
| } |
| |
| return mPlugin->closeSession(sessionId); |
| } |
| |
| status_t Drm::getKeyRequest(Vector<uint8_t> const &sessionId, |
| Vector<uint8_t> const &initData, |
| String8 const &mimeType, DrmPlugin::KeyType keyType, |
| KeyedVector<String8, String8> const &optionalParameters, |
| Vector<uint8_t> &request, String8 &defaultUrl) { |
| Mutex::Autolock autoLock(mLock); |
| |
| if (mInitCheck != OK) { |
| return mInitCheck; |
| } |
| |
| if (mPlugin == NULL) { |
| return -EINVAL; |
| } |
| |
| return mPlugin->getKeyRequest(sessionId, initData, mimeType, keyType, |
| optionalParameters, request, defaultUrl); |
| } |
| |
| status_t Drm::provideKeyResponse(Vector<uint8_t> const &sessionId, |
| Vector<uint8_t> const &response, |
| Vector<uint8_t> &keySetId) { |
| Mutex::Autolock autoLock(mLock); |
| |
| if (mInitCheck != OK) { |
| return mInitCheck; |
| } |
| |
| if (mPlugin == NULL) { |
| return -EINVAL; |
| } |
| |
| return mPlugin->provideKeyResponse(sessionId, response, keySetId); |
| } |
| |
| status_t Drm::removeKeys(Vector<uint8_t> const &keySetId) { |
| Mutex::Autolock autoLock(mLock); |
| |
| if (mInitCheck != OK) { |
| return mInitCheck; |
| } |
| |
| if (mPlugin == NULL) { |
| return -EINVAL; |
| } |
| |
| return mPlugin->removeKeys(keySetId); |
| } |
| |
| status_t Drm::restoreKeys(Vector<uint8_t> const &sessionId, |
| Vector<uint8_t> const &keySetId) { |
| Mutex::Autolock autoLock(mLock); |
| |
| if (mInitCheck != OK) { |
| return mInitCheck; |
| } |
| |
| if (mPlugin == NULL) { |
| return -EINVAL; |
| } |
| |
| return mPlugin->restoreKeys(sessionId, keySetId); |
| } |
| |
| status_t Drm::queryKeyStatus(Vector<uint8_t> const &sessionId, |
| KeyedVector<String8, String8> &infoMap) const { |
| Mutex::Autolock autoLock(mLock); |
| |
| if (mInitCheck != OK) { |
| return mInitCheck; |
| } |
| |
| if (mPlugin == NULL) { |
| return -EINVAL; |
| } |
| |
| return mPlugin->queryKeyStatus(sessionId, infoMap); |
| } |
| |
| status_t Drm::getProvisionRequest(Vector<uint8_t> &request, String8 &defaultUrl) { |
| Mutex::Autolock autoLock(mLock); |
| |
| if (mInitCheck != OK) { |
| return mInitCheck; |
| } |
| |
| if (mPlugin == NULL) { |
| return -EINVAL; |
| } |
| |
| return mPlugin->getProvisionRequest(request, defaultUrl); |
| } |
| |
| status_t Drm::provideProvisionResponse(Vector<uint8_t> const &response) { |
| Mutex::Autolock autoLock(mLock); |
| |
| if (mInitCheck != OK) { |
| return mInitCheck; |
| } |
| |
| if (mPlugin == NULL) { |
| return -EINVAL; |
| } |
| |
| return mPlugin->provideProvisionResponse(response); |
| } |
| |
| |
| status_t Drm::getSecureStops(List<Vector<uint8_t> > &secureStops) { |
| Mutex::Autolock autoLock(mLock); |
| |
| if (mInitCheck != OK) { |
| return mInitCheck; |
| } |
| |
| if (mPlugin == NULL) { |
| return -EINVAL; |
| } |
| |
| return mPlugin->getSecureStops(secureStops); |
| } |
| |
| status_t Drm::releaseSecureStops(Vector<uint8_t> const &ssRelease) { |
| Mutex::Autolock autoLock(mLock); |
| |
| if (mInitCheck != OK) { |
| return mInitCheck; |
| } |
| |
| if (mPlugin == NULL) { |
| return -EINVAL; |
| } |
| |
| return mPlugin->releaseSecureStops(ssRelease); |
| } |
| |
| status_t Drm::getPropertyString(String8 const &name, String8 &value ) const { |
| Mutex::Autolock autoLock(mLock); |
| |
| if (mInitCheck != OK) { |
| return mInitCheck; |
| } |
| |
| if (mPlugin == NULL) { |
| return -EINVAL; |
| } |
| |
| return mPlugin->getPropertyString(name, value); |
| } |
| |
| status_t Drm::getPropertyByteArray(String8 const &name, Vector<uint8_t> &value ) const { |
| Mutex::Autolock autoLock(mLock); |
| |
| if (mInitCheck != OK) { |
| return mInitCheck; |
| } |
| |
| if (mPlugin == NULL) { |
| return -EINVAL; |
| } |
| |
| return mPlugin->getPropertyByteArray(name, value); |
| } |
| |
| status_t Drm::setPropertyString(String8 const &name, String8 const &value ) const { |
| Mutex::Autolock autoLock(mLock); |
| |
| if (mInitCheck != OK) { |
| return mInitCheck; |
| } |
| |
| if (mPlugin == NULL) { |
| return -EINVAL; |
| } |
| |
| return mPlugin->setPropertyString(name, value); |
| } |
| |
| status_t Drm::setPropertyByteArray(String8 const &name, |
| Vector<uint8_t> const &value ) const { |
| Mutex::Autolock autoLock(mLock); |
| |
| if (mInitCheck != OK) { |
| return mInitCheck; |
| } |
| |
| if (mPlugin == NULL) { |
| return -EINVAL; |
| } |
| |
| return mPlugin->setPropertyByteArray(name, value); |
| } |
| |
| |
| status_t Drm::setCipherAlgorithm(Vector<uint8_t> const &sessionId, |
| String8 const &algorithm) { |
| Mutex::Autolock autoLock(mLock); |
| |
| if (mInitCheck != OK) { |
| return mInitCheck; |
| } |
| |
| if (mPlugin == NULL) { |
| return -EINVAL; |
| } |
| |
| return mPlugin->setCipherAlgorithm(sessionId, algorithm); |
| } |
| |
| status_t Drm::setMacAlgorithm(Vector<uint8_t> const &sessionId, |
| String8 const &algorithm) { |
| Mutex::Autolock autoLock(mLock); |
| |
| if (mInitCheck != OK) { |
| return mInitCheck; |
| } |
| |
| if (mPlugin == NULL) { |
| return -EINVAL; |
| } |
| |
| return mPlugin->setMacAlgorithm(sessionId, algorithm); |
| } |
| |
| status_t Drm::encrypt(Vector<uint8_t> const &sessionId, |
| Vector<uint8_t> const &keyId, |
| Vector<uint8_t> const &input, |
| Vector<uint8_t> const &iv, |
| Vector<uint8_t> &output) { |
| Mutex::Autolock autoLock(mLock); |
| |
| if (mInitCheck != OK) { |
| return mInitCheck; |
| } |
| |
| if (mPlugin == NULL) { |
| return -EINVAL; |
| } |
| |
| return mPlugin->encrypt(sessionId, keyId, input, iv, output); |
| } |
| |
| status_t Drm::decrypt(Vector<uint8_t> const &sessionId, |
| Vector<uint8_t> const &keyId, |
| Vector<uint8_t> const &input, |
| Vector<uint8_t> const &iv, |
| Vector<uint8_t> &output) { |
| Mutex::Autolock autoLock(mLock); |
| |
| if (mInitCheck != OK) { |
| return mInitCheck; |
| } |
| |
| if (mPlugin == NULL) { |
| return -EINVAL; |
| } |
| |
| return mPlugin->decrypt(sessionId, keyId, input, iv, output); |
| } |
| |
| status_t Drm::sign(Vector<uint8_t> const &sessionId, |
| Vector<uint8_t> const &keyId, |
| Vector<uint8_t> const &message, |
| Vector<uint8_t> &signature) { |
| Mutex::Autolock autoLock(mLock); |
| |
| if (mInitCheck != OK) { |
| return mInitCheck; |
| } |
| |
| if (mPlugin == NULL) { |
| return -EINVAL; |
| } |
| |
| return mPlugin->sign(sessionId, keyId, message, signature); |
| } |
| |
| status_t Drm::verify(Vector<uint8_t> const &sessionId, |
| Vector<uint8_t> const &keyId, |
| Vector<uint8_t> const &message, |
| Vector<uint8_t> const &signature, |
| bool &match) { |
| Mutex::Autolock autoLock(mLock); |
| |
| if (mInitCheck != OK) { |
| return mInitCheck; |
| } |
| |
| if (mPlugin == NULL) { |
| return -EINVAL; |
| } |
| |
| return mPlugin->verify(sessionId, keyId, message, signature, match); |
| } |
| |
| } // namespace android |
