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/*
* Copyright (C) 2018 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.
*/
#include <android-base/endian.h>
#include <android-base/logging.h>
#include <app_nugget.h>
#include <nos/debug.h>
#include <nos/NuggetClient.h>
#include <device.h>
#include <screen_ui.h>
namespace android {
namespace device {
namespace google {
namespace crosshatch {
namespace {
/** Wipe user data from Titan M. */
bool WipeTitanM() {
// Connect to Titan M
::nos::NuggetClient client;
client.Open();
if (!client.IsOpen()) {
LOG(ERROR) << "Failed to connect to Titan M";
return false;
}
// Tell it to wipe user data
const uint32_t magicValue = htole32(ERASE_CONFIRMATION);
std::vector<uint8_t> magic(sizeof(magicValue));
memcpy(magic.data(), &magicValue, sizeof(magicValue));
const uint32_t status
= client.CallApp(APP_ID_NUGGET, NUGGET_PARAM_NUKE_FROM_ORBIT, magic, nullptr);
if (status != APP_SUCCESS) {
LOG(ERROR) << "Titan M user data wipe failed: " << ::nos::StatusCodeString(status)
<< " (" << status << ")";
return false;
}
LOG(INFO) << "Titan M wipe successful";
return true;
}
} // namespace
class CrosshatchDevice : public ::Device
{
public:
CrosshatchDevice(::ScreenRecoveryUI* const ui) : ::Device(ui) {}
/** Hook to wipe user data not stored in /data */
bool PostWipeData() override {
// Try to do everything but report a failure if anything wasn't successful
bool totalSuccess = true;
::RecoveryUI* const ui = GetUI();
ui->Print("Wiping Titan M...\n");
if (!WipeTitanM()) {
totalSuccess = false;
}
// Extendable to wipe other components
return totalSuccess;
}
};
} // namespace crosshatch
} // namespace google
} // namespace device
} // namespace android
Device *make_device()
{
return new ::android::device::google::crosshatch::CrosshatchDevice(new ::ScreenRecoveryUI);
}
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