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package com.android.server.deviceconfig;
import static com.android.server.deviceconfig.Flags.enableRebootNotification;
import static com.android.server.deviceconfig.Flags.enableUnattendedReboot;
import java.io.IOException;
import java.io.FileDescriptor;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.HashSet;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;
import android.aconfig.Aconfig.parsed_flags;
import android.aconfig.Aconfig.parsed_flag;
import android.content.Intent;
import android.annotation.NonNull;
import android.annotation.SystemApi;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.os.AsyncTask;
import android.os.Binder;
import android.content.IntentFilter;
import android.provider.DeviceConfig;
import android.provider.UpdatableDeviceConfigServiceReadiness;
import android.content.ServiceConnection;
import android.os.IBinder;
import android.content.ComponentName;
import android.util.Slog;
import com.android.modules.utils.build.SdkLevel;
import com.android.server.SystemService;
/** @hide */
@SystemApi(client = SystemApi.Client.SYSTEM_SERVER)
public class DeviceConfigInit {
private static final String TAG = "DEVICE_CONFIG_INIT";
private static final String STAGED_NAMESPACE = "staged";
private static final String SYSTEM_FLAGS_PATH = "/system/etc/aconfig_flags.pb";
private static final String SYSTEM_EXT_FLAGS_PATH = "/system_ext/etc/aconfig_flags.pb";
private static final String VENDOR_FLAGS_PATH = "/vendor/etc/aconfig_flags.pb";
private DeviceConfigInit() {
// do not instantiate
}
/** @hide */
@SystemApi(client = SystemApi.Client.SYSTEM_SERVER)
public static class Lifecycle extends SystemService {
private DeviceConfigServiceImpl mService;
private UnattendedRebootManager mUnattendedRebootManager;
/** @hide */
@SystemApi(client = SystemApi.Client.SYSTEM_SERVER)
public Lifecycle(@NonNull Context context) {
super(context);
// this service is always instantiated but should only launch subsequent service(s)
// if the module is ready
if (UpdatableDeviceConfigServiceReadiness.shouldStartUpdatableService()) {
mService = new DeviceConfigServiceImpl(getContext());
publishBinderService(DeviceConfig.SERVICE_NAME, mService);
}
applyBootstrapValues();
}
/**
* @hide
*/
@Override
public void onStart() {
if (enableRebootNotification()) {
Map<String, Set<String>> aconfigFlags = new HashMap<>();
try {
addAconfigFlagsFromFile(aconfigFlags, SYSTEM_FLAGS_PATH);
addAconfigFlagsFromFile(aconfigFlags, SYSTEM_EXT_FLAGS_PATH);
addAconfigFlagsFromFile(aconfigFlags, VENDOR_FLAGS_PATH);
} catch (IOException e) {
Slog.e(TAG, "error loading aconfig flags", e);
}
BootNotificationCreator notifCreator = new BootNotificationCreator(
getContext().getApplicationContext(),
aconfigFlags);
DeviceConfig.addOnPropertiesChangedListener(
STAGED_NAMESPACE,
AsyncTask.THREAD_POOL_EXECUTOR,
notifCreator);
}
if (enableUnattendedReboot()) {
mUnattendedRebootManager =
new UnattendedRebootManager(getContext().getApplicationContext());
getContext()
.registerReceiver(
new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
mUnattendedRebootManager.prepareUnattendedReboot();
mUnattendedRebootManager.scheduleReboot();
}
},
new IntentFilter(Intent.ACTION_BOOT_COMPLETED));
}
}
private void addAconfigFlagsFromFile(Map<String, Set<String>> aconfigFlags,
String fileName) throws IOException {
byte[] contents = (new FileInputStream(fileName)).readAllBytes();
parsed_flags parsedFlags = parsed_flags.parseFrom(contents);
for (parsed_flag flag : parsedFlags.getParsedFlagList()) {
if (aconfigFlags.get(flag.getNamespace()) == null) {
aconfigFlags.put(flag.getNamespace(), new HashSet<>());
aconfigFlags.get(flag.getNamespace()).add(flag.getName());
} else {
aconfigFlags.get(flag.getNamespace()).add(flag.getName());
}
}
}
private void applyBootstrapValues() {
if (SdkLevel.isAtLeastV()) {
try {
new DeviceConfigBootstrapValues().applyValuesIfNeeded();
} catch (RuntimeException e) {
Slog.e(TAG, "Failed to load boot overrides", e);
throw e;
} catch (IOException e) {
Slog.e(TAG, "Failed to load boot overrides", e);
throw new RuntimeException(e);
}
}
}
}
}
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