/*
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* Copyright (C) 2012 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.keyguard;
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import android.app.Activity;
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import android.app.AlertDialog;
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import android.app.Dialog;
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import android.app.ProgressDialog;
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import android.content.Context;
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import android.content.res.ColorStateList;
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import android.content.res.Resources;
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import android.content.res.TypedArray;
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import android.graphics.Color;
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import android.os.RemoteException;
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import android.os.ServiceManager;
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import android.telephony.SubscriptionInfo;
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import android.telephony.SubscriptionManager;
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import android.telephony.TelephonyManager;
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import android.util.AttributeSet;
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import android.util.Log;
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import android.view.View;
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import android.view.WindowManager;
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import android.widget.ImageView;
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import com.android.internal.telephony.ITelephony;
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import com.android.internal.telephony.IccCardConstants;
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import com.android.internal.telephony.IccCardConstants.State;
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import com.android.internal.telephony.PhoneConstants;
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/**
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* Displays a PIN pad for entering a PUK (Pin Unlock Kode) provided by a carrier.
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*/
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public class KeyguardSimPukView extends KeyguardPinBasedInputView {
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private static final String LOG_TAG = "KeyguardSimPukView";
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private static final boolean DEBUG = KeyguardConstants.DEBUG;
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public static final String TAG = "KeyguardSimPukView";
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private ProgressDialog mSimUnlockProgressDialog = null;
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private CheckSimPuk mCheckSimPukThread;
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// Below flag is set to true during power-up or when a new SIM card inserted on device.
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// When this is true and when SIM card is PUK locked state, on PIN lock screen, message would
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// be displayed to inform user about the number of remaining PUK attempts left.
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private boolean mShowDefaultMessage = true;
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private int mRemainingAttempts = -1;
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private String mPukText;
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private String mPinText;
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private StateMachine mStateMachine = new StateMachine();
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private AlertDialog mRemainingAttemptsDialog;
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private int mSubId = SubscriptionManager.INVALID_SUBSCRIPTION_ID;
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private ImageView mSimImageView;
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KeyguardUpdateMonitorCallback mUpdateMonitorCallback = new KeyguardUpdateMonitorCallback() {
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@Override
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public void onSimStateChanged(int subId, int slotId, State simState) {
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if (DEBUG) Log.v(TAG, "onSimStateChanged(subId=" + subId + ",state=" + simState + ")");
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switch(simState) {
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// If the SIM is unlocked via a key sequence through the emergency dialer, it will
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// move into the READY state and the PUK lock keyguard should be removed.
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case READY: {
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mRemainingAttempts = -1;
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mShowDefaultMessage = true;
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// mCallback can be null if onSimStateChanged callback is called when keyguard
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// isn't active.
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if (mCallback != null) {
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mCallback.dismiss(true, KeyguardUpdateMonitor.getCurrentUser());
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}
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break;
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}
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default:
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resetState();
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}
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}
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};
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public KeyguardSimPukView(Context context) {
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this(context, null);
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}
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public KeyguardSimPukView(Context context, AttributeSet attrs) {
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super(context, attrs);
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}
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private class StateMachine {
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final int ENTER_PUK = 0;
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final int ENTER_PIN = 1;
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final int CONFIRM_PIN = 2;
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final int DONE = 3;
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private int state = ENTER_PUK;
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public void next() {
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int msg = 0;
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if (state == ENTER_PUK) {
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if (checkPuk()) {
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state = ENTER_PIN;
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msg = R.string.kg_puk_enter_pin_hint;
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} else {
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msg = R.string.kg_invalid_sim_puk_hint;
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}
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} else if (state == ENTER_PIN) {
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if (checkPin()) {
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state = CONFIRM_PIN;
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msg = R.string.kg_enter_confirm_pin_hint;
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} else {
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msg = R.string.kg_invalid_sim_pin_hint;
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}
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} else if (state == CONFIRM_PIN) {
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if (confirmPin()) {
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state = DONE;
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msg = R.string.keyguard_sim_unlock_progress_dialog_message;
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updateSim();
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} else {
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state = ENTER_PIN; // try again?
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msg = R.string.kg_invalid_confirm_pin_hint;
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}
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}
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resetPasswordText(true /* animate */, true /* announce */);
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if (msg != 0) {
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mSecurityMessageDisplay.setMessage(msg);
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}
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}
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void reset() {
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mPinText="";
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mPukText="";
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state = ENTER_PUK;
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handleSubInfoChangeIfNeeded();
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if (mShowDefaultMessage) {
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showDefaultMessage();
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}
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boolean isEsimLocked = KeyguardEsimArea.isEsimLocked(mContext, mSubId);
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KeyguardEsimArea esimButton = findViewById(R.id.keyguard_esim_area);
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esimButton.setVisibility(isEsimLocked ? View.VISIBLE : View.GONE);
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mPasswordEntry.requestFocus();
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}
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}
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private void showDefaultMessage() {
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if (mRemainingAttempts >= 0) {
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mSecurityMessageDisplay.setMessage(getPukPasswordErrorMessage(
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mRemainingAttempts, true));
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return;
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}
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boolean isEsimLocked = KeyguardEsimArea.isEsimLocked(mContext, mSubId);
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int count = TelephonyManager.getDefault().getSimCount();
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Resources rez = getResources();
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String msg;
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TypedArray array = mContext.obtainStyledAttributes(new int[] { R.attr.wallpaperTextColor });
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int color = array.getColor(0, Color.WHITE);
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array.recycle();
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if (count < 2) {
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msg = rez.getString(R.string.kg_puk_enter_puk_hint);
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} else {
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SubscriptionInfo info = KeyguardUpdateMonitor.getInstance(mContext).
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getSubscriptionInfoForSubId(mSubId);
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CharSequence displayName = info != null ? info.getDisplayName() : "";
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msg = rez.getString(R.string.kg_puk_enter_puk_hint_multi, displayName);
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if (info != null) {
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color = info.getIconTint();
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}
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}
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if (isEsimLocked) {
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msg = rez.getString(R.string.kg_sim_lock_esim_instructions, msg);
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}
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if (mSecurityMessageDisplay != null) {
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mSecurityMessageDisplay.setMessage(msg);
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}
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mSimImageView.setImageTintList(ColorStateList.valueOf(color));
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// Sending empty PUK here to query the number of remaining PIN attempts
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new CheckSimPuk("", "", mSubId) {
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void onSimLockChangedResponse(final int result, final int attemptsRemaining) {
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Log.d(LOG_TAG, "onSimCheckResponse " + " dummy One result" + result +
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" attemptsRemaining=" + attemptsRemaining);
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if (attemptsRemaining >= 0) {
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mRemainingAttempts = attemptsRemaining;
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mSecurityMessageDisplay.setMessage(
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getPukPasswordErrorMessage(attemptsRemaining, true));
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}
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}
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}.start();
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}
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private void handleSubInfoChangeIfNeeded() {
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KeyguardUpdateMonitor monitor = KeyguardUpdateMonitor.getInstance(mContext);
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int subId = monitor.getNextSubIdForState(IccCardConstants.State.PUK_REQUIRED);
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if (subId != mSubId && SubscriptionManager.isValidSubscriptionId(subId)) {
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mSubId = subId;
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mShowDefaultMessage = true;
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mRemainingAttempts = -1;
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}
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}
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@Override
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protected int getPromptReasonStringRes(int reason) {
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// No message on SIM Puk
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return 0;
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}
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private String getPukPasswordErrorMessage(int attemptsRemaining, boolean isDefault) {
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String displayMessage;
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if (attemptsRemaining == 0) {
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displayMessage = getContext().getString(R.string.kg_password_wrong_puk_code_dead);
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} else if (attemptsRemaining > 0) {
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int msgId = isDefault ? R.plurals.kg_password_default_puk_message :
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R.plurals.kg_password_wrong_puk_code;
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displayMessage = getContext().getResources()
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.getQuantityString(msgId, attemptsRemaining, attemptsRemaining);
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} else {
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int msgId = isDefault ? R.string.kg_puk_enter_puk_hint :
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R.string.kg_password_puk_failed;
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displayMessage = getContext().getString(msgId);
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}
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if (KeyguardEsimArea.isEsimLocked(mContext, mSubId)) {
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displayMessage = getResources()
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.getString(R.string.kg_sim_lock_esim_instructions, displayMessage);
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}
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if (DEBUG) Log.d(LOG_TAG, "getPukPasswordErrorMessage:"
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+ " attemptsRemaining=" + attemptsRemaining + " displayMessage=" + displayMessage);
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return displayMessage;
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}
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@Override
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public void resetState() {
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super.resetState();
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mStateMachine.reset();
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}
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@Override
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protected boolean shouldLockout(long deadline) {
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// SIM PUK doesn't have a timed lockout
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return false;
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}
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@Override
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protected int getPasswordTextViewId() {
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return R.id.pukEntry;
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}
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@Override
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protected void onFinishInflate() {
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super.onFinishInflate();
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if (mEcaView instanceof EmergencyCarrierArea) {
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((EmergencyCarrierArea) mEcaView).setCarrierTextVisible(true);
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}
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mSimImageView = findViewById(R.id.keyguard_sim);
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}
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@Override
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protected void onAttachedToWindow() {
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super.onAttachedToWindow();
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KeyguardUpdateMonitor.getInstance(mContext).registerCallback(mUpdateMonitorCallback);
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resetState();
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}
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@Override
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protected void onDetachedFromWindow() {
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super.onDetachedFromWindow();
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KeyguardUpdateMonitor.getInstance(mContext).removeCallback(mUpdateMonitorCallback);
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}
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@Override
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public void showUsabilityHint() {
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}
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@Override
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public void onPause() {
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// dismiss the dialog.
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if (mSimUnlockProgressDialog != null) {
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mSimUnlockProgressDialog.dismiss();
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mSimUnlockProgressDialog = null;
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}
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}
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/**
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* Since the IPC can block, we want to run the request in a separate thread
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* with a callback.
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*/
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private abstract class CheckSimPuk extends Thread {
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private final String mPin, mPuk;
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private final int mSubId;
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protected CheckSimPuk(String puk, String pin, int subId) {
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mPuk = puk;
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mPin = pin;
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mSubId = subId;
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}
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abstract void onSimLockChangedResponse(final int result, final int attemptsRemaining);
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@Override
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public void run() {
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try {
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if (DEBUG) Log.v(TAG, "call supplyPukReportResult()");
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final int[] result = ITelephony.Stub.asInterface(ServiceManager
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.checkService("phone")).supplyPukReportResultForSubscriber(mSubId, mPuk, mPin);
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if (DEBUG) {
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Log.v(TAG, "supplyPukReportResult returned: " + result[0] + " " + result[1]);
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}
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post(new Runnable() {
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@Override
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public void run() {
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onSimLockChangedResponse(result[0], result[1]);
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}
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});
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} catch (RemoteException e) {
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Log.e(TAG, "RemoteException for supplyPukReportResult:", e);
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post(new Runnable() {
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@Override
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public void run() {
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onSimLockChangedResponse(PhoneConstants.PIN_GENERAL_FAILURE, -1);
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}
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});
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}
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}
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}
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private Dialog getSimUnlockProgressDialog() {
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if (mSimUnlockProgressDialog == null) {
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mSimUnlockProgressDialog = new ProgressDialog(mContext);
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mSimUnlockProgressDialog.setMessage(
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mContext.getString(R.string.kg_sim_unlock_progress_dialog_message));
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mSimUnlockProgressDialog.setIndeterminate(true);
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mSimUnlockProgressDialog.setCancelable(false);
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if (!(mContext instanceof Activity)) {
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mSimUnlockProgressDialog.getWindow().setType(
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WindowManager.LayoutParams.TYPE_KEYGUARD_DIALOG);
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}
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}
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return mSimUnlockProgressDialog;
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}
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private Dialog getPukRemainingAttemptsDialog(int remaining) {
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String msg = getPukPasswordErrorMessage(remaining, false);
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if (mRemainingAttemptsDialog == null) {
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AlertDialog.Builder builder = new AlertDialog.Builder(mContext);
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builder.setMessage(msg);
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builder.setCancelable(false);
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builder.setNeutralButton(R.string.ok, null);
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mRemainingAttemptsDialog = builder.create();
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mRemainingAttemptsDialog.getWindow().setType(
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WindowManager.LayoutParams.TYPE_KEYGUARD_DIALOG);
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} else {
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mRemainingAttemptsDialog.setMessage(msg);
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}
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return mRemainingAttemptsDialog;
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}
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private boolean checkPuk() {
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// make sure the puk is at least 8 digits long.
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if (mPasswordEntry.getText().length() == 8) {
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mPukText = mPasswordEntry.getText();
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return true;
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}
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return false;
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}
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private boolean checkPin() {
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// make sure the PIN is between 4 and 8 digits
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int length = mPasswordEntry.getText().length();
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if (length >= 4 && length <= 8) {
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mPinText = mPasswordEntry.getText();
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return true;
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}
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return false;
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}
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public boolean confirmPin() {
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return mPinText.equals(mPasswordEntry.getText());
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}
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private void updateSim() {
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getSimUnlockProgressDialog().show();
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if (mCheckSimPukThread == null) {
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mCheckSimPukThread = new CheckSimPuk(mPukText, mPinText, mSubId) {
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@Override
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void onSimLockChangedResponse(final int result, final int attemptsRemaining) {
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post(new Runnable() {
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@Override
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public void run() {
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if (mSimUnlockProgressDialog != null) {
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mSimUnlockProgressDialog.hide();
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}
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resetPasswordText(true /* animate */,
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result != PhoneConstants.PIN_RESULT_SUCCESS /* announce */);
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if (result == PhoneConstants.PIN_RESULT_SUCCESS) {
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KeyguardUpdateMonitor.getInstance(getContext())
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.reportSimUnlocked(mSubId);
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mRemainingAttempts = -1;
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mShowDefaultMessage = true;
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if (mCallback != null) {
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mCallback.dismiss(true, KeyguardUpdateMonitor.getCurrentUser());
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}
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} else {
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mShowDefaultMessage = false;
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if (result == PhoneConstants.PIN_PASSWORD_INCORRECT) {
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// show message
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mSecurityMessageDisplay.setMessage(getPukPasswordErrorMessage(
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attemptsRemaining, false));
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if (attemptsRemaining <= 2) {
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// this is getting critical - show dialog
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getPukRemainingAttemptsDialog(attemptsRemaining).show();
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} else {
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// show message
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mSecurityMessageDisplay.setMessage(
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getPukPasswordErrorMessage(
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attemptsRemaining, false));
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}
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} else {
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mSecurityMessageDisplay.setMessage(getContext().getString(
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R.string.kg_password_puk_failed));
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}
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if (DEBUG) Log.d(LOG_TAG, "verifyPasswordAndUnlock "
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+ " UpdateSim.onSimCheckResponse: "
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+ " attemptsRemaining=" + attemptsRemaining);
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mStateMachine.reset();
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}
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mCheckSimPukThread = null;
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}
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});
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}
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};
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mCheckSimPukThread.start();
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}
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}
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@Override
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protected void verifyPasswordAndUnlock() {
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mStateMachine.next();
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}
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@Override
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public void startAppearAnimation() {
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// noop.
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}
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@Override
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public boolean startDisappearAnimation(Runnable finishRunnable) {
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return false;
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}
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@Override
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public CharSequence getTitle() {
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return getContext().getString(
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com.android.internal.R.string.keyguard_accessibility_sim_puk_unlock);
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}
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}
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