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/*
* Copyright (C) 2019 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 "DrmUtils"
#include <android/hardware/drm/1.0/ICryptoFactory.h>
#include <android/hardware/drm/1.0/ICryptoPlugin.h>
#include <android/hardware/drm/1.0/IDrmFactory.h>
#include <android/hardware/drm/1.0/IDrmPlugin.h>
#include <android/hardware/drm/1.1/ICryptoFactory.h>
#include <android/hardware/drm/1.1/IDrmFactory.h>
#include <android/hardware/drm/1.2/ICryptoFactory.h>
#include <android/hardware/drm/1.2/IDrmFactory.h>
#include <android/hardware/drm/1.3/ICryptoFactory.h>
#include <android/hardware/drm/1.3/IDrmFactory.h>
#include <android/hidl/manager/1.2/IServiceManager.h>
#include <hidl/HidlSupport.h>
#include <utils/Errors.h>
#include <utils/Log.h>
#include <utils/String16.h>
#include <cutils/properties.h>
#include <mediadrm/CryptoHal.h>
#include <mediadrm/DrmHal.h>
#include <mediadrm/DrmUtils.h>
#include <mediadrm/ICrypto.h>
#include <mediadrm/IDrm.h>
using HServiceManager = ::android::hidl::manager::V1_2::IServiceManager;
using ::android::hardware::hidl_array;
using ::android::hardware::hidl_string;
using ::android::hardware::hidl_vec;
using namespace ::android::hardware::drm;
namespace android {
namespace DrmUtils {
namespace {
template<typename Hal>
Hal *MakeObject(status_t *pstatus) {
status_t err = OK;
status_t &status = pstatus ? *pstatus : err;
auto obj = new Hal();
status = obj->initCheck();
if (status != OK && status != NO_INIT) {
return NULL;
}
return obj;
}
template <typename Hal, typename V>
void MakeHidlFactories(const uint8_t uuid[16], V &factories) {
sp<HServiceManager> serviceManager = HServiceManager::getService();
if (serviceManager == nullptr) {
ALOGE("Failed to get service manager");
exit(-1);
}
serviceManager->listManifestByInterface(Hal::descriptor, [&](const hidl_vec<hidl_string> ®istered) {
for (const auto &instance : registered) {
auto factory = Hal::getService(instance);
if (factory != nullptr) {
ALOGI("found %s %s", Hal::descriptor, instance.c_str());
if (!uuid || factory->isCryptoSchemeSupported(uuid)) {
factories.push_back(factory);
}
}
}
});
}
hidl_vec<uint8_t> toHidlVec(const void *ptr, size_t size) {
hidl_vec<uint8_t> vec(size);
if (ptr != nullptr) {
memcpy(vec.data(), ptr, size);
}
return vec;
}
hidl_array<uint8_t, 16> toHidlArray16(const uint8_t *ptr) {
if (ptr == nullptr) {
return hidl_array<uint8_t, 16>();
}
return hidl_array<uint8_t, 16>(ptr);
}
sp<::V1_0::IDrmPlugin> MakeDrmPlugin(const sp<::V1_0::IDrmFactory> &factory,
const uint8_t uuid[16], const char *appPackageName) {
sp<::V1_0::IDrmPlugin> plugin;
factory->createPlugin(toHidlArray16(uuid), hidl_string(appPackageName),
[&](::V1_0::Status status, const sp<::V1_0::IDrmPlugin> &hPlugin) {
if (status != ::V1_0::Status::OK) {
return;
}
plugin = hPlugin;
});
return plugin;
}
sp<::V1_0::ICryptoPlugin> MakeCryptoPlugin(const sp<::V1_0::ICryptoFactory> &factory,
const uint8_t uuid[16], const void *initData,
size_t initDataSize) {
sp<::V1_0::ICryptoPlugin> plugin;
factory->createPlugin(toHidlArray16(uuid), toHidlVec(initData, initDataSize),
[&](::V1_0::Status status, const sp<::V1_0::ICryptoPlugin> &hPlugin) {
if (status != ::V1_0::Status::OK) {
return;
}
plugin = hPlugin;
});
return plugin;
}
} // namespace
bool UseDrmService() {
return property_get_bool("mediadrm.use_mediadrmserver", true);
}
sp<IDrm> MakeDrm(status_t *pstatus) {
return MakeObject<DrmHal>(pstatus);
}
sp<ICrypto> MakeCrypto(status_t *pstatus) {
return MakeObject<CryptoHal>(pstatus);
}
std::vector<sp<::V1_0::IDrmFactory>> MakeDrmFactories(const uint8_t uuid[16]) {
std::vector<sp<::V1_0::IDrmFactory>> drmFactories;
MakeHidlFactories<::V1_0::IDrmFactory>(uuid, drmFactories);
MakeHidlFactories<::V1_1::IDrmFactory>(uuid, drmFactories);
MakeHidlFactories<::V1_2::IDrmFactory>(uuid, drmFactories);
MakeHidlFactories<::V1_3::IDrmFactory>(uuid, drmFactories);
return drmFactories;
}
std::vector<sp<::V1_0::IDrmPlugin>> MakeDrmPlugins(const uint8_t uuid[16],
const char *appPackageName) {
std::vector<sp<::V1_0::IDrmPlugin>> plugins;
for (const auto &factory : MakeDrmFactories(uuid)) {
plugins.push_back(MakeDrmPlugin(factory, uuid, appPackageName));
}
return plugins;
}
std::vector<sp<::V1_0::ICryptoFactory>> MakeCryptoFactories(const uint8_t uuid[16]) {
std::vector<sp<::V1_0::ICryptoFactory>> cryptoFactories;
MakeHidlFactories<::V1_0::ICryptoFactory>(uuid, cryptoFactories);
MakeHidlFactories<::V1_1::ICryptoFactory>(uuid, cryptoFactories);
MakeHidlFactories<::V1_2::ICryptoFactory>(uuid, cryptoFactories);
MakeHidlFactories<::V1_3::ICryptoFactory>(uuid, cryptoFactories);
return cryptoFactories;
}
std::vector<sp<ICryptoPlugin>> MakeCryptoPlugins(const uint8_t uuid[16], const void *initData,
size_t initDataSize) {
std::vector<sp<ICryptoPlugin>> plugins;
for (const auto &factory : MakeCryptoFactories(uuid)) {
plugins.push_back(MakeCryptoPlugin(factory, uuid, initData, initDataSize));
}
return plugins;
}
} // namespace DrmUtils
} // namespace android
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