Add CellularNetworkService. (3c9f8c8c) · Commits · e / os / android_frameworks_opt_telephony

src/java/com/android/internal/telephony/CellularNetworkService.java

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		/*
		* Copyright 2017 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.
		*/

		package com.android.internal.telephony;

		import android.annotation.CallSuper;
		import android.hardware.radio.V1_0.CellInfoType;
		import android.hardware.radio.V1_0.DataRegStateResult;
		import android.hardware.radio.V1_0.RegState;
		import android.hardware.radio.V1_0.VoiceRegStateResult;
		import android.os.AsyncResult;
		import android.os.Handler;
		import android.os.HandlerThread;
		import android.os.Looper;
		import android.os.Message;
		import android.telephony.AccessNetworkConstants.TransportType;
		import android.telephony.CellIdentity;
		import android.telephony.CellIdentityCdma;
		import android.telephony.CellIdentityGsm;
		import android.telephony.CellIdentityLte;
		import android.telephony.CellIdentityTdscdma;
		import android.telephony.CellIdentityWcdma;
		import android.telephony.NetworkRegistrationState;
		import android.telephony.NetworkService;
		import android.telephony.NetworkServiceCallback;
		import android.telephony.Rlog;
		import android.telephony.ServiceState;
		import android.telephony.SubscriptionManager;

		import java.util.HashMap;
		import java.util.Map;

		/**
		* Implementation of network services for Cellular. It's a service that handles network requests
		* for Cellular. It passes the requests to inner CellularNetworkServiceProvider which has a
		* handler thread for each slot.
		*/
		public class CellularNetworkService extends NetworkService {
		private static final boolean DBG = false;

		private static final String TAG = CellularNetworkService.class.getSimpleName();

		private static final int GET_CS_REGISTRATION_STATE_DONE = 1;
		private static final int GET_PS_REGISTRATION_STATE_DONE = 2;
		private static final int NETWORK_REGISTRATION_STATE_CHANGED = 3;

		private class CellularNetworkServiceProvider extends NetworkServiceProvider {

		private final Map<Message, NetworkServiceCallback> mCallbackMap = new HashMap<>();

		private final Looper mLooper;

		private final HandlerThread mHandlerThread;

		private final Handler mHandler;

		private final Phone mPhone;

		CellularNetworkServiceProvider(int slotId) {
		super(slotId);

		mPhone = PhoneFactory.getPhone(getSlotId());

		mHandlerThread = new HandlerThread(CellularNetworkService.class.getSimpleName());
		mHandlerThread.start();
		mLooper = mHandlerThread.getLooper();
		mHandler = new Handler(mLooper) {
		@Override
		public void handleMessage(Message message) {
		NetworkServiceCallback callback = mCallbackMap.remove(message);

		AsyncResult ar;
		switch (message.what) {
		case GET_CS_REGISTRATION_STATE_DONE:
		case GET_PS_REGISTRATION_STATE_DONE:
		if (callback == null) return;
		ar = (AsyncResult) message.obj;
		int domain = (message.what == GET_CS_REGISTRATION_STATE_DONE)
		? NetworkRegistrationState.DOMAIN_CS
		: NetworkRegistrationState.DOMAIN_PS;
		NetworkRegistrationState netState =
		getRegistrationStateFromResult(ar.result, domain);

		int resultCode;
		if (ar.exception != null \|\| netState == null) {
		resultCode = NetworkServiceCallback.RESULT_ERROR_FAILED;
		} else {
		resultCode = NetworkServiceCallback.RESULT_SUCCESS;
		}

		try {
		if (DBG) {
		log("Calling callback.onGetNetworkRegistrationStateComplete."
		+ "resultCode = " + resultCode
		+ ", netState = " + netState);
		}
		callback.onGetNetworkRegistrationStateComplete(
		resultCode, netState);
		} catch (Exception e) {
		loge("Exception: " + e);
		}
		break;
		case NETWORK_REGISTRATION_STATE_CHANGED:
		notifyNetworkRegistrationStateChanged();
		break;
		default:
		return;
		}
		}
		};

		mPhone.mCi.registerForNetworkStateChanged(
		mHandler, NETWORK_REGISTRATION_STATE_CHANGED, null);
		}

		private int getRegStateFromHalRegState(int halRegState) {
		switch (halRegState) {
		case RegState.NOT_REG_MT_NOT_SEARCHING_OP:
		case RegState.NOT_REG_MT_NOT_SEARCHING_OP_EM:
		return NetworkRegistrationState.REG_STATE_NOT_REG_NOT_SEARCHING;
		case RegState.REG_HOME:
		return NetworkRegistrationState.REG_STATE_HOME;
		case RegState.NOT_REG_MT_SEARCHING_OP:
		case RegState.NOT_REG_MT_SEARCHING_OP_EM:
		return NetworkRegistrationState.REG_STATE_NOT_REG_SEARCHING;
		case RegState.REG_DENIED:
		case RegState.REG_DENIED_EM:
		return NetworkRegistrationState.REG_STATE_DENIED;
		case RegState.UNKNOWN:
		case RegState.UNKNOWN_EM:
		return NetworkRegistrationState.REG_STATE_UNKNOWN;
		case RegState.REG_ROAMING:
		return NetworkRegistrationState.REG_STATE_ROAMING;
		default:
		return NetworkRegistrationState.REG_STATE_NOT_REG_NOT_SEARCHING;
		}
		}

		private boolean isEmergencyOnly(int halRegState) {
		switch (halRegState) {
		case RegState.NOT_REG_MT_NOT_SEARCHING_OP_EM:
		case RegState.NOT_REG_MT_SEARCHING_OP_EM:
		case RegState.REG_DENIED_EM:
		case RegState.UNKNOWN_EM:
		return true;
		case RegState.NOT_REG_MT_NOT_SEARCHING_OP:
		case RegState.REG_HOME:
		case RegState.NOT_REG_MT_SEARCHING_OP:
		case RegState.REG_DENIED:
		case RegState.UNKNOWN:
		case RegState.REG_ROAMING:
		default:
		return false;
		}
		}

		private int[] getAvailableServices(int regState, int domain,
		boolean emergencyOnly) {
		int[] availableServices = null;

		// In emergency only states, only SERVICE_TYPE_EMERGENCY is available.
		// Otherwise, certain services are available only if it's registered on home or roaming
		// network.
		if (emergencyOnly) {
		availableServices = new int[] {NetworkRegistrationState.SERVICE_TYPE_EMERGENCY};
		} else if (regState == NetworkRegistrationState.REG_STATE_ROAMING
		\|\| regState != NetworkRegistrationState.REG_STATE_HOME) {
		if (domain == NetworkRegistrationState.DOMAIN_PS) {
		availableServices = new int[] {NetworkRegistrationState.SERVICE_TYPE_DATA};
		} else if (domain == NetworkRegistrationState.DOMAIN_CS) {
		availableServices = new int[] {
		NetworkRegistrationState.SERVICE_TYPE_VOICE,
		NetworkRegistrationState.SERVICE_TYPE_SMS,
		NetworkRegistrationState.SERVICE_TYPE_VIDEO
		};
		}
		}

		return availableServices;
		}

		private int getAccessNetworkTechnologyFromRat(int rilRat) {
		return ServiceState.rilRadioTechnologyToNetworkType(rilRat);
		}

		private NetworkRegistrationState getRegistrationStateFromResult(Object result, int domain) {
		if (result == null) {
		return null;
		}

		// TODO: unify when voiceRegStateResult and DataRegStateResult are unified.
		if (domain == NetworkRegistrationState.DOMAIN_CS) {
		VoiceRegStateResult voiceRegState = (VoiceRegStateResult) result;
		int transportType = TransportType.WWAN;
		int regState = getRegStateFromHalRegState(voiceRegState.regState);
		int accessNetworkTechnology = getAccessNetworkTechnologyFromRat(voiceRegState.rat);
		int reasonForDenial = voiceRegState.reasonForDenial;
		boolean emergencyOnly = isEmergencyOnly(voiceRegState.regState);
		boolean cssSupported = voiceRegState.cssSupported;
		int roamingIndicator = voiceRegState.roamingIndicator;
		int systemIsInPrl = voiceRegState.systemIsInPrl;
		int defaultRoamingIndicator = voiceRegState.defaultRoamingIndicator;
		int[] availableServices = getAvailableServices(
		regState, domain, emergencyOnly);
		CellIdentity cellIdentity =
		convertHalCellIdentityToCellIdentity(voiceRegState.cellIdentity);

		return new NetworkRegistrationState(transportType, domain, regState,
		accessNetworkTechnology, reasonForDenial, emergencyOnly, availableServices,
		cellIdentity, cssSupported, roamingIndicator, systemIsInPrl,
		defaultRoamingIndicator);
		} else if (domain == NetworkRegistrationState.DOMAIN_PS) {
		DataRegStateResult dataRegState = (DataRegStateResult) result;
		int transportType = TransportType.WWAN;
		int regState = getRegStateFromHalRegState(dataRegState.regState);
		int accessNetworkTechnology = getAccessNetworkTechnologyFromRat(dataRegState.rat);
		int reasonForDenial = dataRegState.reasonDataDenied;
		boolean emergencyOnly = isEmergencyOnly(dataRegState.regState);
		int maxDataCalls = dataRegState.maxDataCalls;
		int[] availableServices = getAvailableServices(regState, domain, emergencyOnly);
		CellIdentity cellIdentity =
		convertHalCellIdentityToCellIdentity(dataRegState.cellIdentity);
		return new NetworkRegistrationState(transportType, domain, regState,
		accessNetworkTechnology, reasonForDenial, emergencyOnly, availableServices,
		cellIdentity, maxDataCalls);
		} else {
		return null;
		}
		}

		private CellIdentity convertHalCellIdentityToCellIdentity(
		android.hardware.radio.V1_0.CellIdentity cellIdentity) {
		CellIdentity result = null;
		switch(cellIdentity.cellInfoType) {
		case CellInfoType.GSM: {
		if (cellIdentity.cellIdentityGsm.size() == 1) {
		android.hardware.radio.V1_0.CellIdentityGsm cellIdentityGsm =
		cellIdentity.cellIdentityGsm.get(0);
		result = new CellIdentityGsm(cellIdentityGsm.lac, cellIdentityGsm.cid,
		cellIdentityGsm.arfcn, cellIdentityGsm.bsic, cellIdentityGsm.mcc,
		cellIdentityGsm.mnc, null, null);
		}
		break;
		}
		case CellInfoType.WCDMA: {
		if (cellIdentity.cellIdentityWcdma.size() == 1) {
		android.hardware.radio.V1_0.CellIdentityWcdma cellIdentityWcdma =
		cellIdentity.cellIdentityWcdma.get(0);
		result = new CellIdentityWcdma(cellIdentityWcdma.lac, cellIdentityWcdma.cid,
		cellIdentityWcdma.psc, cellIdentityWcdma.uarfcn,
		cellIdentityWcdma.mcc, cellIdentityWcdma.mnc, null, null);
		}
		break;
		}
		case CellInfoType.TD_SCDMA: {
		if (cellIdentity.cellIdentityTdscdma.size() == 1) {
		android.hardware.radio.V1_0.CellIdentityTdscdma cellIdentityTdscdma =
		cellIdentity.cellIdentityTdscdma.get(0);
		result = new CellIdentityTdscdma(cellIdentityTdscdma.mcc,
		cellIdentityTdscdma.mnc, cellIdentityTdscdma.lac,
		cellIdentityTdscdma.cid, cellIdentityTdscdma.cpid);
		}
		break;
		}
		case CellInfoType.LTE: {
		if (cellIdentity.cellIdentityLte.size() == 1) {
		android.hardware.radio.V1_0.CellIdentityLte cellIdentityLte =
		cellIdentity.cellIdentityLte.get(0);

		result = new CellIdentityLte(cellIdentityLte.ci, cellIdentityLte.pci,
		cellIdentityLte.tac, cellIdentityLte.earfcn, Integer.MAX_VALUE,
		cellIdentityLte.mcc, cellIdentityLte.mnc, null, null);
		}
		break;
		}
		case CellInfoType.CDMA: {
		if (cellIdentity.cellIdentityCdma.size() == 1) {
		android.hardware.radio.V1_0.CellIdentityCdma cellIdentityCdma =
		cellIdentity.cellIdentityCdma.get(0);

		result = new CellIdentityCdma(cellIdentityCdma.networkId,
		cellIdentityCdma.systemId, cellIdentityCdma.baseStationId,
		cellIdentityCdma.longitude, cellIdentityCdma.latitude);
		}
		break;
		}
		case CellInfoType.NONE:
		default:
		break;
		}

		return result;
		}

		public void getNetworkRegistrationState(int domain, NetworkServiceCallback callback) {
		if (DBG) log("getNetworkRegistrationState for domain " + domain);
		Message message = null;

		if (domain == NetworkRegistrationState.DOMAIN_CS) {
		message = Message.obtain(mHandler, GET_CS_REGISTRATION_STATE_DONE);
		mPhone.mCi.getVoiceRegistrationState(message);
		} else if (domain == NetworkRegistrationState.DOMAIN_PS) {
		message = Message.obtain(mHandler, GET_PS_REGISTRATION_STATE_DONE);
		mPhone.mCi.getDataRegistrationState(message);
		} else {
		loge("getNetworkRegistrationState invalid domain " + domain);
		callback.onGetNetworkRegistrationStateComplete(
		NetworkServiceCallback.RESULT_ERROR_INVALID_ARG, null);
		return;
		}

		mCallbackMap.put(message, callback);
		}

		@CallSuper
		protected void onDestroy() {
		super.onDestroy();

		mCallbackMap.clear();
		mHandlerThread.quit();
		mPhone.mCi.unregisterForNetworkStateChanged(mHandler);
		}
		}

		@Override
		protected NetworkServiceProvider createNetworkServiceProvider(int slotId) {
		if (DBG) log("Cellular network service created for slot " + slotId);
		if (!SubscriptionManager.isValidSlotIndex(slotId)) {
		loge("Tried to Cellular network service with invalid slotId " + slotId);
		return null;
		}
		return new CellularNetworkServiceProvider(slotId);
		}

		private void log(String s) {
		Rlog.d(TAG, s);
		}

		private void loge(String s) {
		Rlog.e(TAG, s);
		}
		}