| /* |
| * Copyright (C) 2010 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.settings; |
| |
| import com.android.internal.widget.LockPatternUtils; |
| import com.android.internal.widget.PasswordEntryKeyboardHelper; |
| import com.android.internal.widget.PasswordEntryKeyboardView; |
| import com.android.settings.notification.RedactionInterstitial; |
| |
| import android.app.Activity; |
| import android.app.Fragment; |
| import android.app.admin.DevicePolicyManager; |
| import android.content.ContentResolver; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.inputmethodservice.KeyboardView; |
| import android.os.Bundle; |
| import android.os.Handler; |
| import android.os.Message; |
| import android.provider.Settings; |
| import android.text.Editable; |
| import android.text.InputType; |
| import android.text.Selection; |
| import android.text.Spannable; |
| import android.text.TextUtils; |
| import android.text.TextWatcher; |
| import android.view.KeyEvent; |
| import android.view.LayoutInflater; |
| import android.view.View; |
| import android.view.ViewGroup; |
| import android.view.View.OnClickListener; |
| import android.view.inputmethod.EditorInfo; |
| import android.widget.Button; |
| import android.widget.TextView; |
| import android.widget.TextView.OnEditorActionListener; |
| |
| public class ChooseLockPassword extends SettingsActivity { |
| public static final String PASSWORD_MIN_KEY = "lockscreen.password_min"; |
| public static final String PASSWORD_MAX_KEY = "lockscreen.password_max"; |
| public static final String PASSWORD_MIN_LETTERS_KEY = "lockscreen.password_min_letters"; |
| public static final String PASSWORD_MIN_LOWERCASE_KEY = "lockscreen.password_min_lowercase"; |
| public static final String PASSWORD_MIN_UPPERCASE_KEY = "lockscreen.password_min_uppercase"; |
| public static final String PASSWORD_MIN_NUMERIC_KEY = "lockscreen.password_min_numeric"; |
| public static final String PASSWORD_MIN_SYMBOLS_KEY = "lockscreen.password_min_symbols"; |
| public static final String PASSWORD_MIN_NONLETTER_KEY = "lockscreen.password_min_nonletter"; |
| |
| @Override |
| public Intent getIntent() { |
| Intent modIntent = new Intent(super.getIntent()); |
| modIntent.putExtra(EXTRA_SHOW_FRAGMENT, getFragmentClass().getName()); |
| return modIntent; |
| } |
| |
| public static Intent createIntent(Context context, int quality, final boolean isFallback, |
| int minLength, final int maxLength, boolean requirePasswordToDecrypt, |
| boolean confirmCredentials) { |
| Intent intent = new Intent().setClass(context, ChooseLockPassword.class); |
| intent.putExtra(LockPatternUtils.PASSWORD_TYPE_KEY, quality); |
| intent.putExtra(PASSWORD_MIN_KEY, minLength); |
| intent.putExtra(PASSWORD_MAX_KEY, maxLength); |
| intent.putExtra(ChooseLockGeneric.CONFIRM_CREDENTIALS, confirmCredentials); |
| intent.putExtra(LockPatternUtils.LOCKSCREEN_BIOMETRIC_WEAK_FALLBACK, isFallback); |
| intent.putExtra(EncryptionInterstitial.EXTRA_REQUIRE_PASSWORD, requirePasswordToDecrypt); |
| return intent; |
| } |
| |
| @Override |
| protected boolean isValidFragment(String fragmentName) { |
| if (ChooseLockPasswordFragment.class.getName().equals(fragmentName)) return true; |
| return false; |
| } |
| |
| /* package */ Class<? extends Fragment> getFragmentClass() { |
| return ChooseLockPasswordFragment.class; |
| } |
| |
| @Override |
| public void onCreate(Bundle savedInstanceState) { |
| // TODO: Fix on phones |
| // Disable IME on our window since we provide our own keyboard |
| //getWindow().setFlags(WindowManager.LayoutParams.FLAG_ALT_FOCUSABLE_IM, |
| //WindowManager.LayoutParams.FLAG_ALT_FOCUSABLE_IM); |
| super.onCreate(savedInstanceState); |
| CharSequence msg = getText(R.string.lockpassword_choose_your_password_header); |
| setTitle(msg); |
| } |
| |
| public static class ChooseLockPasswordFragment extends Fragment |
| implements OnClickListener, OnEditorActionListener, TextWatcher { |
| private static final String KEY_FIRST_PIN = "first_pin"; |
| private static final String KEY_UI_STAGE = "ui_stage"; |
| private TextView mPasswordEntry; |
| private int mPasswordMinLength = 4; |
| private int mPasswordMaxLength = 16; |
| private int mPasswordMinLetters = 0; |
| private int mPasswordMinUpperCase = 0; |
| private int mPasswordMinLowerCase = 0; |
| private int mPasswordMinSymbols = 0; |
| private int mPasswordMinNumeric = 0; |
| private int mPasswordMinNonLetter = 0; |
| private LockPatternUtils mLockPatternUtils; |
| private int mRequestedQuality = DevicePolicyManager.PASSWORD_QUALITY_NUMERIC; |
| private ChooseLockSettingsHelper mChooseLockSettingsHelper; |
| private Stage mUiStage = Stage.Introduction; |
| private boolean mDone = false; |
| private TextView mHeaderText; |
| private String mFirstPin; |
| private KeyboardView mKeyboardView; |
| private PasswordEntryKeyboardHelper mKeyboardHelper; |
| private boolean mIsAlphaMode; |
| private Button mCancelButton; |
| private Button mNextButton; |
| private static final int CONFIRM_EXISTING_REQUEST = 58; |
| static final int RESULT_FINISHED = RESULT_FIRST_USER; |
| private static final long ERROR_MESSAGE_TIMEOUT = 3000; |
| private static final int MSG_SHOW_ERROR = 1; |
| |
| private Handler mHandler = new Handler() { |
| @Override |
| public void handleMessage(Message msg) { |
| if (msg.what == MSG_SHOW_ERROR) { |
| updateStage((Stage) msg.obj); |
| } |
| } |
| }; |
| |
| /** |
| * Keep track internally of where the user is in choosing a pattern. |
| */ |
| protected enum Stage { |
| |
| Introduction(R.string.lockpassword_choose_your_password_header, |
| R.string.lockpassword_choose_your_pin_header, |
| R.string.lockpassword_continue_label), |
| |
| NeedToConfirm(R.string.lockpassword_confirm_your_password_header, |
| R.string.lockpassword_confirm_your_pin_header, |
| R.string.lockpassword_ok_label), |
| |
| ConfirmWrong(R.string.lockpassword_confirm_passwords_dont_match, |
| R.string.lockpassword_confirm_pins_dont_match, |
| R.string.lockpassword_continue_label); |
| |
| Stage(int hintInAlpha, int hintInNumeric, int nextButtonText) { |
| this.alphaHint = hintInAlpha; |
| this.numericHint = hintInNumeric; |
| this.buttonText = nextButtonText; |
| } |
| |
| public final int alphaHint; |
| public final int numericHint; |
| public final int buttonText; |
| } |
| |
| // required constructor for fragments |
| public ChooseLockPasswordFragment() { |
| |
| } |
| |
| @Override |
| public void onCreate(Bundle savedInstanceState) { |
| super.onCreate(savedInstanceState); |
| mLockPatternUtils = new LockPatternUtils(getActivity()); |
| Intent intent = getActivity().getIntent(); |
| if (!(getActivity() instanceof ChooseLockPassword)) { |
| throw new SecurityException("Fragment contained in wrong activity"); |
| } |
| mRequestedQuality = Math.max(intent.getIntExtra(LockPatternUtils.PASSWORD_TYPE_KEY, |
| mRequestedQuality), mLockPatternUtils.getRequestedPasswordQuality()); |
| mPasswordMinLength = Math.max( |
| intent.getIntExtra(PASSWORD_MIN_KEY, mPasswordMinLength), mLockPatternUtils |
| .getRequestedMinimumPasswordLength()); |
| mPasswordMaxLength = intent.getIntExtra(PASSWORD_MAX_KEY, mPasswordMaxLength); |
| mPasswordMinLetters = Math.max(intent.getIntExtra(PASSWORD_MIN_LETTERS_KEY, |
| mPasswordMinLetters), mLockPatternUtils.getRequestedPasswordMinimumLetters()); |
| mPasswordMinUpperCase = Math.max(intent.getIntExtra(PASSWORD_MIN_UPPERCASE_KEY, |
| mPasswordMinUpperCase), mLockPatternUtils.getRequestedPasswordMinimumUpperCase()); |
| mPasswordMinLowerCase = Math.max(intent.getIntExtra(PASSWORD_MIN_LOWERCASE_KEY, |
| mPasswordMinLowerCase), mLockPatternUtils.getRequestedPasswordMinimumLowerCase()); |
| mPasswordMinNumeric = Math.max(intent.getIntExtra(PASSWORD_MIN_NUMERIC_KEY, |
| mPasswordMinNumeric), mLockPatternUtils.getRequestedPasswordMinimumNumeric()); |
| mPasswordMinSymbols = Math.max(intent.getIntExtra(PASSWORD_MIN_SYMBOLS_KEY, |
| mPasswordMinSymbols), mLockPatternUtils.getRequestedPasswordMinimumSymbols()); |
| mPasswordMinNonLetter = Math.max(intent.getIntExtra(PASSWORD_MIN_NONLETTER_KEY, |
| mPasswordMinNonLetter), mLockPatternUtils.getRequestedPasswordMinimumNonLetter()); |
| |
| mChooseLockSettingsHelper = new ChooseLockSettingsHelper(getActivity()); |
| } |
| |
| @Override |
| public View onCreateView(LayoutInflater inflater, ViewGroup container, |
| Bundle savedInstanceState) { |
| return inflater.inflate(R.layout.choose_lock_password, container, false); |
| } |
| |
| @Override |
| public void onViewCreated(View view, Bundle savedInstanceState) { |
| super.onViewCreated(view, savedInstanceState); |
| |
| mCancelButton = (Button) view.findViewById(R.id.cancel_button); |
| mCancelButton.setOnClickListener(this); |
| mNextButton = (Button) view.findViewById(R.id.next_button); |
| mNextButton.setOnClickListener(this); |
| |
| mIsAlphaMode = DevicePolicyManager.PASSWORD_QUALITY_ALPHABETIC == mRequestedQuality |
| || DevicePolicyManager.PASSWORD_QUALITY_ALPHANUMERIC == mRequestedQuality |
| || DevicePolicyManager.PASSWORD_QUALITY_COMPLEX == mRequestedQuality; |
| mKeyboardView = (PasswordEntryKeyboardView) view.findViewById(R.id.keyboard); |
| mPasswordEntry = (TextView) view.findViewById(R.id.password_entry); |
| mPasswordEntry.setOnEditorActionListener(this); |
| mPasswordEntry.addTextChangedListener(this); |
| |
| final Activity activity = getActivity(); |
| mKeyboardHelper = new PasswordEntryKeyboardHelper(activity, |
| mKeyboardView, mPasswordEntry); |
| mKeyboardHelper.setKeyboardMode(mIsAlphaMode ? |
| PasswordEntryKeyboardHelper.KEYBOARD_MODE_ALPHA |
| : PasswordEntryKeyboardHelper.KEYBOARD_MODE_NUMERIC); |
| |
| mHeaderText = (TextView) view.findViewById(R.id.headerText); |
| mKeyboardView.requestFocus(); |
| |
| int currentType = mPasswordEntry.getInputType(); |
| mPasswordEntry.setInputType(mIsAlphaMode ? currentType |
| : (InputType.TYPE_CLASS_NUMBER | InputType.TYPE_NUMBER_VARIATION_PASSWORD)); |
| |
| Intent intent = getActivity().getIntent(); |
| final boolean confirmCredentials = intent.getBooleanExtra("confirm_credentials", true); |
| if (savedInstanceState == null) { |
| updateStage(Stage.Introduction); |
| if (confirmCredentials) { |
| mChooseLockSettingsHelper.launchConfirmationActivity(CONFIRM_EXISTING_REQUEST, |
| null, null); |
| } |
| } else { |
| mFirstPin = savedInstanceState.getString(KEY_FIRST_PIN); |
| final String state = savedInstanceState.getString(KEY_UI_STAGE); |
| if (state != null) { |
| mUiStage = Stage.valueOf(state); |
| updateStage(mUiStage); |
| } |
| } |
| mDone = false; |
| if (activity instanceof SettingsActivity) { |
| final SettingsActivity sa = (SettingsActivity) activity; |
| int id = mIsAlphaMode ? R.string.lockpassword_choose_your_password_header |
| : R.string.lockpassword_choose_your_pin_header; |
| CharSequence title = getText(id); |
| sa.setTitle(title); |
| } |
| } |
| |
| @Override |
| public void onResume() { |
| super.onResume(); |
| updateStage(mUiStage); |
| mKeyboardView.requestFocus(); |
| } |
| |
| @Override |
| public void onPause() { |
| mHandler.removeMessages(MSG_SHOW_ERROR); |
| |
| super.onPause(); |
| } |
| |
| @Override |
| public void onSaveInstanceState(Bundle outState) { |
| super.onSaveInstanceState(outState); |
| outState.putString(KEY_UI_STAGE, mUiStage.name()); |
| outState.putString(KEY_FIRST_PIN, mFirstPin); |
| } |
| |
| @Override |
| public void onActivityResult(int requestCode, int resultCode, |
| Intent data) { |
| super.onActivityResult(requestCode, resultCode, data); |
| switch (requestCode) { |
| case CONFIRM_EXISTING_REQUEST: |
| if (resultCode != Activity.RESULT_OK) { |
| getActivity().setResult(RESULT_FINISHED); |
| getActivity().finish(); |
| } |
| break; |
| } |
| } |
| |
| protected Intent getRedactionInterstitialIntent(Context context) { |
| return RedactionInterstitial.createStartIntent(context); |
| } |
| |
| protected void updateStage(Stage stage) { |
| final Stage previousStage = mUiStage; |
| mUiStage = stage; |
| updateUi(); |
| |
| // If the stage changed, announce the header for accessibility. This |
| // is a no-op when accessibility is disabled. |
| if (previousStage != stage) { |
| mHeaderText.announceForAccessibility(mHeaderText.getText()); |
| } |
| } |
| |
| /** |
| * Validates PIN and returns a message to display if PIN fails test. |
| * @param password the raw password the user typed in |
| * @return error message to show to user or null if password is OK |
| */ |
| private String validatePassword(String password) { |
| if (password.length() < mPasswordMinLength) { |
| return getString(mIsAlphaMode ? |
| R.string.lockpassword_password_too_short |
| : R.string.lockpassword_pin_too_short, mPasswordMinLength); |
| } |
| if (password.length() > mPasswordMaxLength) { |
| return getString(mIsAlphaMode ? |
| R.string.lockpassword_password_too_long |
| : R.string.lockpassword_pin_too_long, mPasswordMaxLength + 1); |
| } |
| int letters = 0; |
| int numbers = 0; |
| int lowercase = 0; |
| int symbols = 0; |
| int uppercase = 0; |
| int nonletter = 0; |
| for (int i = 0; i < password.length(); i++) { |
| char c = password.charAt(i); |
| // allow non control Latin-1 characters only |
| if (c < 32 || c > 127) { |
| return getString(R.string.lockpassword_illegal_character); |
| } |
| if (c >= '0' && c <= '9') { |
| numbers++; |
| nonletter++; |
| } else if (c >= 'A' && c <= 'Z') { |
| letters++; |
| uppercase++; |
| } else if (c >= 'a' && c <= 'z') { |
| letters++; |
| lowercase++; |
| } else { |
| symbols++; |
| nonletter++; |
| } |
| } |
| if (DevicePolicyManager.PASSWORD_QUALITY_NUMERIC == mRequestedQuality |
| || DevicePolicyManager.PASSWORD_QUALITY_NUMERIC_COMPLEX == mRequestedQuality) { |
| if (letters > 0 || symbols > 0) { |
| // This shouldn't be possible unless user finds some way to bring up |
| // soft keyboard |
| return getString(R.string.lockpassword_pin_contains_non_digits); |
| } |
| // Check for repeated characters or sequences (e.g. '1234', '0000', '2468') |
| final int sequence = LockPatternUtils.maxLengthSequence(password); |
| if (DevicePolicyManager.PASSWORD_QUALITY_NUMERIC_COMPLEX == mRequestedQuality |
| && sequence > LockPatternUtils.MAX_ALLOWED_SEQUENCE) { |
| return getString(R.string.lockpassword_pin_no_sequential_digits); |
| } |
| } else if (DevicePolicyManager.PASSWORD_QUALITY_COMPLEX == mRequestedQuality) { |
| if (letters < mPasswordMinLetters) { |
| return String.format(getResources().getQuantityString( |
| R.plurals.lockpassword_password_requires_letters, mPasswordMinLetters), |
| mPasswordMinLetters); |
| } else if (numbers < mPasswordMinNumeric) { |
| return String.format(getResources().getQuantityString( |
| R.plurals.lockpassword_password_requires_numeric, mPasswordMinNumeric), |
| mPasswordMinNumeric); |
| } else if (lowercase < mPasswordMinLowerCase) { |
| return String.format(getResources().getQuantityString( |
| R.plurals.lockpassword_password_requires_lowercase, mPasswordMinLowerCase), |
| mPasswordMinLowerCase); |
| } else if (uppercase < mPasswordMinUpperCase) { |
| return String.format(getResources().getQuantityString( |
| R.plurals.lockpassword_password_requires_uppercase, mPasswordMinUpperCase), |
| mPasswordMinUpperCase); |
| } else if (symbols < mPasswordMinSymbols) { |
| return String.format(getResources().getQuantityString( |
| R.plurals.lockpassword_password_requires_symbols, mPasswordMinSymbols), |
| mPasswordMinSymbols); |
| } else if (nonletter < mPasswordMinNonLetter) { |
| return String.format(getResources().getQuantityString( |
| R.plurals.lockpassword_password_requires_nonletter, mPasswordMinNonLetter), |
| mPasswordMinNonLetter); |
| } |
| } else { |
| final boolean alphabetic = DevicePolicyManager.PASSWORD_QUALITY_ALPHABETIC |
| == mRequestedQuality; |
| final boolean alphanumeric = DevicePolicyManager.PASSWORD_QUALITY_ALPHANUMERIC |
| == mRequestedQuality; |
| if ((alphabetic || alphanumeric) && letters == 0) { |
| return getString(R.string.lockpassword_password_requires_alpha); |
| } |
| if (alphanumeric && numbers == 0) { |
| return getString(R.string.lockpassword_password_requires_digit); |
| } |
| } |
| if(mLockPatternUtils.checkPasswordHistory(password)) { |
| return getString(mIsAlphaMode ? R.string.lockpassword_password_recently_used |
| : R.string.lockpassword_pin_recently_used); |
| } |
| |
| return null; |
| } |
| |
| private void handleNext() { |
| if (mDone) return; |
| |
| final String pin = mPasswordEntry.getText().toString(); |
| if (TextUtils.isEmpty(pin)) { |
| return; |
| } |
| String errorMsg = null; |
| if (mUiStage == Stage.Introduction) { |
| errorMsg = validatePassword(pin); |
| if (errorMsg == null) { |
| mFirstPin = pin; |
| mPasswordEntry.setText(""); |
| updateStage(Stage.NeedToConfirm); |
| } |
| } else if (mUiStage == Stage.NeedToConfirm) { |
| if (mFirstPin.equals(pin)) { |
| final boolean isFallback = getActivity().getIntent().getBooleanExtra( |
| LockPatternUtils.LOCKSCREEN_BIOMETRIC_WEAK_FALLBACK, false); |
| boolean wasSecureBefore = mLockPatternUtils.isSecure(); |
| mLockPatternUtils.clearLock(isFallback); |
| final boolean required = getActivity().getIntent().getBooleanExtra( |
| EncryptionInterstitial.EXTRA_REQUIRE_PASSWORD, true); |
| mLockPatternUtils.setCredentialRequiredToDecrypt(required); |
| mLockPatternUtils.saveLockPassword(pin, mRequestedQuality, isFallback); |
| getActivity().setResult(RESULT_FINISHED); |
| getActivity().finish(); |
| mDone = true; |
| if (!wasSecureBefore) { |
| startActivity(getRedactionInterstitialIntent(getActivity())); |
| } |
| } else { |
| CharSequence tmp = mPasswordEntry.getText(); |
| if (tmp != null) { |
| Selection.setSelection((Spannable) tmp, 0, tmp.length()); |
| } |
| updateStage(Stage.ConfirmWrong); |
| } |
| } |
| if (errorMsg != null) { |
| showError(errorMsg, mUiStage); |
| } |
| } |
| |
| public void onClick(View v) { |
| switch (v.getId()) { |
| case R.id.next_button: |
| handleNext(); |
| break; |
| |
| case R.id.cancel_button: |
| getActivity().finish(); |
| break; |
| } |
| } |
| |
| private void showError(String msg, final Stage next) { |
| mHeaderText.setText(msg); |
| mHeaderText.announceForAccessibility(mHeaderText.getText()); |
| Message mesg = mHandler.obtainMessage(MSG_SHOW_ERROR, next); |
| mHandler.removeMessages(MSG_SHOW_ERROR); |
| mHandler.sendMessageDelayed(mesg, ERROR_MESSAGE_TIMEOUT); |
| } |
| |
| public boolean onEditorAction(TextView v, int actionId, KeyEvent event) { |
| // Check if this was the result of hitting the enter or "done" key |
| if (actionId == EditorInfo.IME_NULL |
| || actionId == EditorInfo.IME_ACTION_DONE |
| || actionId == EditorInfo.IME_ACTION_NEXT) { |
| handleNext(); |
| return true; |
| } |
| return false; |
| } |
| |
| /** |
| * Update the hint based on current Stage and length of password entry |
| */ |
| private void updateUi() { |
| String password = mPasswordEntry.getText().toString(); |
| final int length = password.length(); |
| if (mUiStage == Stage.Introduction && length > 0) { |
| if (length < mPasswordMinLength) { |
| String msg = getString(mIsAlphaMode ? R.string.lockpassword_password_too_short |
| : R.string.lockpassword_pin_too_short, mPasswordMinLength); |
| mHeaderText.setText(msg); |
| mNextButton.setEnabled(false); |
| } else { |
| String error = validatePassword(password); |
| if (error != null) { |
| mHeaderText.setText(error); |
| mNextButton.setEnabled(false); |
| } else { |
| mHeaderText.setText(R.string.lockpassword_press_continue); |
| mNextButton.setEnabled(true); |
| } |
| } |
| } else { |
| mHeaderText.setText(mIsAlphaMode ? mUiStage.alphaHint : mUiStage.numericHint); |
| mNextButton.setEnabled(length > 0); |
| } |
| mNextButton.setText(mUiStage.buttonText); |
| } |
| |
| public void afterTextChanged(Editable s) { |
| // Changing the text while error displayed resets to NeedToConfirm state |
| if (mUiStage == Stage.ConfirmWrong) { |
| mUiStage = Stage.NeedToConfirm; |
| } |
| updateUi(); |
| } |
| |
| public void beforeTextChanged(CharSequence s, int start, int count, int after) { |
| |
| } |
| |
| public void onTextChanged(CharSequence s, int start, int before, int count) { |
| |
| } |
| } |
| } |
